The menstrual cycle has been a topic of interest in relation to behavior and cognition for many years, with historical beliefs associating it with cognitive impairment. However, recent research has challenged these be...The menstrual cycle has been a topic of interest in relation to behavior and cognition for many years, with historical beliefs associating it with cognitive impairment. However, recent research has challenged these beliefs and suggested potential positive effects of the menstrual cycle on cognitive performance. Despite these emerging findings, there is still a lack of consensus regarding the impact of the menstrual cycle on cognition, particularly in domains such as spatial reasoning, visual memory, and numerical memory. Hence, this study aimed to explore the relationship between the menstrual cycle and cognitive performance in these specific domains. Previous studies have reported mixed findings, with some suggesting no significant association and others indicating potential differences across the menstrual cycle. To contribute to this body of knowledge, we explored the research question of whether the menstrual cycles have a significant effect on cognition, particularly in the domains of spatial reasoning, visual and numerical memory in a regionally diverse sample of menstruating females. A total of 30 menstruating females from mixed geographical backgrounds participated in the study, and a repeated measures design was used to assess their cognitive performance in two phases of the menstrual cycle: follicular and luteal. The results of the study revealed that while spatial reasoning was not significantly related to the menstrual cycle (p = 0.256), both visual and numerical memory had significant positive associations (p < 0.001) with the luteal phase. However, since the effect sizes were very small, the importance of this relationship might be commonly overestimated. Future studies could thus entail designs with larger sample sizes, including neuro-biological measures of menstrual stages, and consequently inform competent interventions and support systems.展开更多
OBJECTIVE:To evidently assess the applicability of regulate menstrual cycle(MC)characteristics in Traditional Chinese Medicine(TCM)as an indicator for fertility.METHODS:A community-based prospective cohort study was c...OBJECTIVE:To evidently assess the applicability of regulate menstrual cycle(MC)characteristics in Traditional Chinese Medicine(TCM)as an indicator for fertility.METHODS:A community-based prospective cohort study was conducted in China.Between January 2010 and December 2012,women who were willing to conceive within 2 years were enrolled in the study.Other than the MC length pattern,a well-adopted MC characteristic,menstrual blood color and clots were specifically concerned for women enrolled.All participants were followed up in 2 years by trained nurses.Pregnancy rate,fecundability odds ratio(FOR)and risk of miscarriage were assessed as fertility outcomes.RESULTS:A total of 2109 women were effectively included in this cohort for analysis.Results show that women with irregular MC length were less likely to achieve conception(FOR_(irregular)=0.59;95%CI=0.45-0.77,P<0.001).Menstrual blood in bright red color was also associated with decline in likelihood of conception(FOR=0.79;95%CI=0.63-0.98,P=0.04).Women with menstrual blood in light red were at higher risk of miscarriage(OR=2.39;95%CI=0.91-6.28,P=0.08).No significant impact was found between menstrual blood clots and fertility outcomes(FOR=1.02,95%CI=0.83-1.25,P=0.88;OR=1.2695%CI=0.77-2.07,P=0.35).CONCLUSIONS:MC characteristics can be an effective and simple indicator for women’s fertility.Increasing the knowledge of MC characteristics for women in reproductive ages would bring great benefits to their preconception health conditions.展开更多
Premenstrual and menstrual exacerbation of psychiatric disorders is a significant area of concern in female mental health.Many females experience a worsening of psychiatric symptoms in the premenstrual and menstrual p...Premenstrual and menstrual exacerbation of psychiatric disorders is a significant area of concern in female mental health.Many females experience a worsening of psychiatric symptoms in the premenstrual and menstrual phases of their menstrual cycle,including heightened anxiety,depression,irritability,and mood swings.These exacerbations are most commonly associated with premenstrual syndrome and premenstrual dysphoric disorder that are characterized by severe emotional and physical symptoms that interfere with daily functioning.The hormonal fluctuations during the menstrual cycle,particularly changes in estrogen and progesterone levels,are believed to play a pivotal role in these exacerbations.Psychiatric disorders such as depression,anxiety,bipolar disorder,and schizophrenia may be influenced by these hormonal changes,with many females reporting an increase in symptom severity during specific phases of the cycle.The mechanisms behind this phenomenon remain complex,with both biological and psychosocial factors contributing to the heightened vulnerability.Clinical management includes careful monitoring of symptom patterns in relation to the menstrual cycle,with treatment options ranging from lifestyle modifications and psychotherapy to pharmacological interventions such as antidepressants and hormonal therapies.Understanding the link between menstruation and psychiatric disorders is essential for improving diagnosis and tailoring effective treatment strategies for affected individuals.展开更多
Menstrual cycle characteristics constitute one of the significant female fertility indicators.Previous epidemiological studies have shown that exposure to environmental chemicals could affect menstrual cycle character...Menstrual cycle characteristics constitute one of the significant female fertility indicators.Previous epidemiological studies have shown that exposure to environmental chemicals could affect menstrual cycle characteristics,but the knowledge remains limited overall.Per-and polyfluoroalkyl substances(PFAS)have been identified as potential reproductive toxicants,while previous studies mainly focused on several legacy PFAS chemicals but generally failed to explore the outcomes from exposure to a complex mixture of both legacy and emerging PFAS.Besides,the modification effect of physical activity is rarely considered.In the present study,we explored the associations of exposure to a suite of legacy and emerging PFAS and menstrual cycle regularity as well as the potential modification by physical activity based on a pre-conception cohort in Shanghai(China)with the participation of 1001 reproductive-aged women.A total of 20 PFAS chemicals with detection frequency>80%,which were derived from the PFAS exposure profile of the same population in our previous study,were included in the confounder-adjusted logistic regression and Bayesian kernel machine regression(BKMR)analysis.In individual PFAS analysis,after adjustment of the covariates,∑2m-PFOS(the sum of all perfluoro-dimethylhexane sulfonates)was significantly associated with menstrual cycle irregularity with an odds ratio(OR)of 1.35(95%confidence interval,CI:1.09,1.67)as well as long cycles(OR=1.37;95%CI:1.08,1.70).In addition,a significant positive association was also found between perfluoro-n-nonanoic acid(PFNA)and long cycles(OR=1.40;95%CI:1.06,1.86).No significant associations were found between the PFAS mixture and the menstrual cycle characteristics as revealed by BKMR analysis,while the significant association between ∑2m-PFOS and menstrual cycle irregularity was also observed in the mixture exposure model.Subgroup analysis stratified by physical activity level showed that the associations between ∑2m-PFOS and menstrual cycle irregularity as well as long cycles were more pronounced in the inactive physical activity subgroup.This study suggested that branched PFOS(i.e.,∑2m-PFOS)might act as the predominant risk factor for menstrual cycle irregularity,and physical activity could influence the risks.展开更多
Background:Acne vulgaris is a common skin disorder that impacts quality of life.Both acne and menstrual symptoms share a hormonal pathogenesis,often linked to hormonal imbalances in women.This suggests a relationship ...Background:Acne vulgaris is a common skin disorder that impacts quality of life.Both acne and menstrual symptoms share a hormonal pathogenesis,often linked to hormonal imbalances in women.This suggests a relationship between acne counts and the various phases of the menstrual cycle.Objective:In this study,we aimed to assess the relationship between acne counts and the menstrual cycle in healthy young Indian women suffering from mild to moderate acne.The objective was to further understand the role of the various phases of the menstrual cycle in acne flares.Methods:This study explores the data from two(2)previously conducted clinical trials.The studies originally aimed to evaluate the efficacy of topical creams in the reduction of acne lesion count on the face.The data from these studies were retrieved and compiled.The number of days between the last menstrual period(LMP)and the actual day of the visit was calculated and regrouped as follows:1–7 days(early to mid-follicular phase),8–15 days(mid-to late follicular phase),16–24 days(post-ovulation to early luteal phase)and>24 days(mid-to late luteal phase).Subsequently,the global acne count—recorded by the dermatologist as part of the study procedures—was cross-tabulated with these menstrual phases using measures of central tendency and dispersion,followed by inferential analyses to evaluate differences between groups.Results:On average,the female subjects visiting the centre during the end of their luteal phase or bleeding days had higher acne counts(p=0.032).This effect was statistically significant only at the baseline visit,which followed a 14-day washout period involving the use of a neutral cleanser and adoption of a general skincare routine.During the product use phase,the effect of the menstrual cycle diminished.Conclusion:The study demonstrates an association between acne flares and the menstrual cycle:acne counts are likely to be higher by an average of 5–6 units during the late luteal and early follicular phases.Such differences may impact the outcome of clinical trials if not carefully monitored and accounted for in study designs and data analysis.展开更多
Background Polycystic ovary syndrome （PCOS） is considered to be the most common endocrine disorder in women of reproductive age.The involvement of an abnormal menstrual cycle in the etiology of PCOS remains unclear....Background Polycystic ovary syndrome （PCOS） is considered to be the most common endocrine disorder in women of reproductive age.The involvement of an abnormal menstrual cycle in the etiology of PCOS remains unclear.We aimed to analyze the characteristics of abnormal menstrual cycles and their association with PCOS in community and hospital patient populations.Methods Women with PCOS identified from 2111 permanent female residents in the community of Beijing and 506 outpatients obtained from the reproductive clinic of Peking University Third Hospital were recruited for this study,comprising the PCOS community group and the PCOS hospital group, respectively.Each group was further divided into four subgroups according to the length of menstrual cycles： 〈21 days; 21-34 days; 35-60 days; and 〉60 days.Women in each group were interviewed using a questionnaire to assess factors including age, age of menarche, menstrual cycle history, related family history, and modified Ferriman-Gallwey （mF-G） score.All women received transvaginal ultrasound scan and had fasting blood samples taken for endocrine evaluation.A two-tailed P value of 〈0.05 was considered significant.Results In the community population, the prevalence of abnormal menstrual cycle was 27.19% （574/2111）.The prevalence of PCOS in the community was 6.11% （129/2111） according to Rotterdam criteria.In the community group,the most common menstrual cycle length was 35-60 days, whereas for the hospital group, it was 〉60 days.In both the community and hospital groups, the most common phenotype of PCOS was that of Oligo/amenorrhea＋PCO＋hyperandrogenism （HA） （O＋P＋H） （P=0.000）.With increasing cycle length of 35-60 days to 〉60 days, the percentages of Oligo/amenorrhea＋PCO （O＋P） and O＋P＋H were found to significantly decrease in the community group and significantly increase in the hospital group （P=0.000 for each）.In the hospital group, as the menstrual cycle length increased from 35-60 days to 〉60 days, the rate of spontaneous abortion increased significantly （P=0.000）, meanwhile the rate of poorly-secreted endometrium and abnormal endometrial hyperplasia increased significantly （P=0.000）.Conclusions The prevalence of PCOS in the Beijing community of women was 6.11%.Oligo/arnenorrhea was the most common type of abnormal menstrual cycle and may be an indicator for PCOS and endometrial lesions.Gynecologists should seek relevant medical information from women in the community to promptly diagnose PCOS and then follow up patients for potential development of subsequent complications.展开更多
BACKGROUND Dydrogesterone has shown significant efficacy in treatment of irregular menstrual cycle due to abnormal uterine bleeding-ovulation dysfunction(AUB-O),but there were few relevant studies.This observational s...BACKGROUND Dydrogesterone has shown significant efficacy in treatment of irregular menstrual cycle due to abnormal uterine bleeding-ovulation dysfunction(AUB-O),but there were few relevant studies.This observational study was designed to evaluate the effectiveness of dydrogesterone for the treatment of Chinese patients with AUB-O.AIM To evaluate the effects of dydrogesterone on menstrual-cycle(MC)regularization and metabolism in the patients with AUB-O.METHODS A prospective,non-interventional,single-arm,post-marketing observational study was conducted.Chinese women aged 16 years or above with AUB-O who had been prescribed dydrogesterone were enrolled.The patients were treated with dydrogesterone 10 mg from day 16 to day 25 of each cycle,consecutively for at least 3 cycles.The main outcome was defined as the percentage of patients whose MCs returned to normal(defined as 21 d<menstrual cycle≤35 d)after three cycles of dydrogesterone treatment.RESULTS One hundred and fourteen women with AUB-O were enrolled in the present study.Of 89 patients who completed treatment,72(80.9%)achieved a regular MC at the end of the 3rd circle.The level of androgen,including testosterone and dehydroepiandrosterone sulfate,declined significantly(P=0.01 and 0.031,respectively),whereas other hormone levels remained steady.During the treatment,44/80(55.0%)subjects in the per-protocol set had reported biphasic basal body temperature.CONCLUSION Dydrogesterone therapy was effective in achieving MC regularization for Chinese patients with AUB-O.展开更多
Obejctive To study the lymphocytes, perforin protein and mRNA expression in endometrium of different phases in the menstrual cycle and to explore the regularity and role of the lymphocytes and perforin in the reprodu...Obejctive To study the lymphocytes, perforin protein and mRNA expression in endometrium of different phases in the menstrual cycle and to explore the regularity and role of the lymphocytes and perforin in the reproductive system Methods Immunohistochemical and in situ hybridization techniques were employed to demonstrate the population, phenotype and mediator (perforin) of lymphocytes in the proliferative and secretory endometrium Results In different phases of the endometrium, there were very few CD 3 + typical T lymphocytes, CD 4 + helper lymphocytes and CD 8 + suppressor/cytotoxic T lymphocytes, while CD 56 + lymphocyte (also named NK like cell) were abundant CD 56 + lymphocytes were absent in postmenopausal endometrium A double immunohistochemical labelling method demonstrated the co expression of perforin protein and CD 56 antigen of cells in different phases of the endometrium Quantitative analysis of CD 56 + lymphocytes and perforin positive cells increased in number from the proliferative to the secretory endometrium ( P <0 05) In situ hybridization analysis showed that perforin mRNA positive cells formed islands in proliferative endometrial stroma, but were scattered in secretory endometrium There was difference between perforin gene expression and protein expression in the proliferative endometrium Conclusions Lymphocytes and perforin expression in the endometrium at different phases of the menstrual cycle are specific and may play an important role in the reproductive system They may exert a positive influence on embryo implantation and be involved in endometrial stroma breakdown during menstruation展开更多
Background Nucleophosmin plays a critical role in embryonic development. This study aimed to examine the expression pattern of nucleophosmin in glandular epithelium of human endometrium during the menstrual cycle. Met...Background Nucleophosmin plays a critical role in embryonic development. This study aimed to examine the expression pattern of nucleophosmin in glandular epithelium of human endometrium during the menstrual cycle. Methods Endometrial tissues used for this study were obtained from 46 non-pregnant patients who underwent hysterectomy which had been performed to treat benign diseases. Nucleophosmin expression was assessed by in situ hybridization and immunohistochemistry. Results At the early-, mid- and late-proliferative phase, nucleophosmin mRNA was highly expressed in glandular epithelium of human endometrium. At the secretory phase, the expression of nucleophosmin mRNA was reduced in glandular epithelium in early-secretory phase, and the expression in mid- and late-secretory phases was not detected. Similarly, nucleophosmin protein was strongly expressed in endometrial glands throughout the proliferative phase, but was gradually reduced during secretory phase. Conclusion Nucleophosmin mRNA and protein are expressed in glandular epithelium of human endometrium throucIhout the menstrual cycle.展开更多
Background:Chronic inflammation has been reported as a triggering and driving factor in the pathogenesis of various diseases and is believed to be closely associated with tumor pathogenesis.In this study,we aimed to e...Background:Chronic inflammation has been reported as a triggering and driving factor in the pathogenesis of various diseases and is believed to be closely associated with tumor pathogenesis.In this study,we aimed to explore the changes of the inflammatory stress-related indexes during the menstrual period.Methods:Cytokines and tumor-associated carbohydrate antigens from 76 childbearing-age women during the follicular phase,luteal phase,and menstrual period were measured.Results:The expression of inflammatory indexes,such as platelets(PLT),lymphocytes(Lym),the percentage of Lym(Lym%),neutrophils(Neu),the percantage of Neu(Neu%),neutrophil-to-lymphocyte ratio(NLR),interleukin-6(IL-6),and cancer antigen 125(CA125),reached the highest level during the menstrual period.Conclusions:Female genital organs are under inflammatory stress during menstruation,which hints that the changes of the inflammatory state of the body play an important role in the pathogenesis of diseases.展开更多
Objective: To evaluate the effect of operation timing during menstrual cycle on the prognosis of patients with breast cancer. Methods: 218 operated premenopausal patients with breast cancer had been followedup for m...Objective: To evaluate the effect of operation timing during menstrual cycle on the prognosis of patients with breast cancer. Methods: 218 operated premenopausal patients with breast cancer had been followedup for more than 10 years. Prognostic factors related to these patients had been selected to be underwent univariate analysis and multivariate analysis by Cox regression model. Results: Univariage analysis showed that the menstrual timing of operation, as other Known prognostic factors (tumor size, node status, histological grade, TNM classification, adjuvent systemic therapy, etc), had an influence on the patients' outcome. Multivariate analysis by Cox regression model indicated that diseasefree rate and overall survival rate of patients operated during the periovulatory phase (123 cases) were significantly superior to those operated during the premenstrual phase (95 cases) (P<0.01). There were no significant differences in prognosis between patients who received operations during the follicular phase (96 cases) and those during the luteal phase (122 cases) (P>0.01). Conclusion: Probably there is an optimal timing of operation for premenopausal breast cancer patients. Any prospective, randomized clinical study should be carried out to make this problem clear.展开更多
Gender-related physiological variations in gastrointestinal(GI)symptomatology have been observed in women of reproductive age.Many women experience cyclical changes in GI symptomatology during their menstrual cycle,pa...Gender-related physiological variations in gastrointestinal(GI)symptomatology have been observed in women of reproductive age.Many women experience cyclical changes in GI symptomatology during their menstrual cycle,particularly alteration in their bowel habits.Physiological studies of healthy women during the menstrual cycle showed a prolonged GI transit time during the luteal phase,either in the oro-cecumroute or in the colon.Worsened GI symptoms,such as abdominal pain,bloating or diarrhea are observed in patients with irritable bowel syndrome(IBS)during menses.This may be due to elevated prostaglandin levels during menses,with an enhanced perception of viscera-somatic stimuli resulting in nausea,abdominal distension and pain.Also patients with IBS or IBD demonstrate a cyclical pattern more closely related to their bowel habits than healthy controls.Women with inflammatory bowel disease(IBD)also have exacerbated symptoms during menses;however,it is unclear whether this relates to physiological variation or disease exacerbation in IBS or IBD.Studies examining the association of the menstrual cycle and GI symptomatology in patients with IBS or IBD,have not yet clarified the underlying mechanisms.Moreover medications—such as non-steroidal anti-inflammatory drugs and oral contraceptive pills used for dysmenorrhea and menstrual migraine in those patients have not well been controlled for in the previous studies,which can contribute to further bias.Understanding changes in GI symptomatology during the menstrual cycle may help to determine the true extent of disease exacerbation and proper management strategy.展开更多
To observe the therapeutic effect of menstrual cycle weigh-loss method in women with obesity.1,068 cases of women with obesity were treated respectively by the corresponding acupoints upon menstrual cycle,for clinical...To observe the therapeutic effect of menstrual cycle weigh-loss method in women with obesity.1,068 cases of women with obesity were treated respectively by the corresponding acupoints upon menstrual cycle,for clinical observation of the therapeutic effects.The total effective rate was 92.0%after I course.Menstrual cycle weight-loss method has an extremely remarkable effect on female obesity.展开更多
The endothelial function has been proven to be an important factor in the pathogenesis of atheroscle-rosis, hypertension and heart failure. The flow-mediated vasodilation (FMD) of the peripheral artery is an endotheli...The endothelial function has been proven to be an important factor in the pathogenesis of atheroscle-rosis, hypertension and heart failure. The flow-mediated vasodilation (FMD) of the peripheral artery is an endothelium-dependent function. Brachial-artery ultrasound scanning is the popular method for evaluat-ing FMD.展开更多
In order to explore the relationship between menstrual cycle and pregnancy cycle in women with progesterone level. Depends on the human body physiological hormone main factors of estradiol and progesterone in both hum...In order to explore the relationship between menstrual cycle and pregnancy cycle in women with progesterone level. Depends on the human body physiological hormone main factors of estradiol and progesterone in both human ovarian secretion hormone cycles, the researchers found that adult women long-term depression, anxiety and other psychological mood swings disorder risk for death at least more than two times higher than the adult male, and the physiological sex differences in certain part up and can also by the adult female physiological cyclic changes in hormones into the body. The cycle changes in ovarian hormone levels during the process were predicted to affect the results. This paper first introduces the direct effect of progesterone on female emotion during the physiological cycle, and then analyzes its medicinal value due to its regulating function in the physiological cycle.展开更多
Objective: Since not all women wish to conceive a child through aggressive treatment, we investigated the usefulness of modified repeated intracyclic clomiphene citrate (CC) therapy (repeated CC therapy) as a newly de...Objective: Since not all women wish to conceive a child through aggressive treatment, we investigated the usefulness of modified repeated intracyclic clomiphene citrate (CC) therapy (repeated CC therapy) as a newly devised administration method. Methods: We evaluated the effects of CC administration on menstrual cycle length and retrospectively compared ovulation and pregnancy in 220 women who received CC at our hospital. Patients in the conventional method group received 50 mg per day for five days, starting on the fifth day of menstruation (withdrawal bleeding). Groups with and without menstrual cycle shortening after conventional CC administration were compared. The repeated CC therapy group was also compared with the non-shortened group. Repeated CC therapy was administered for the first five days as in the conventional method, and a second five-day repeat treatment was administered after an interval of five to seven days. Pregnancy rates, including indirect pregnancies, were evaluated by three different methods. Results: Ovulation and pregnancy rates were significantly better in the shortened group than in the non-shortened group (P < 0.001 and P = 0.010, respectively). Even in the non-shortened group, ovulation and pregnancy rates including indirect pregnancies were significantly improved when ovulation was observed with repeated CC therapy (P < 0.001 and P = 0.022, respectively). Conclusions: For patients whose menstrual cycle was not improved or shortened, repeated CC therapy as the newly devised CC administration method is useful as the next step after the conventional CC administration method.展开更多
A 17-year-old girl with colicky abdominal pain andchronic anemia presented to the gastrointestinal serviceof the University Hospital of Essen. In the routineworkup, there were no pathological findings despitethe anemi...A 17-year-old girl with colicky abdominal pain andchronic anemia presented to the gastrointestinal serviceof the University Hospital of Essen. In the routineworkup, there were no pathological findings despitethe anemia. Because of the fluctuation of symptomswith a climax at the time of menstruation, consecutiveultrasound studies were performed revealing a visiblemass inside the gallbladder. This finding was confirmedby a magnetic resonance imaging (MRI) study performedat the same time. Because of the severe anemia by thattime, a cholecystectomy was performed, and histologyreconfirmed the diagnosis of isolated gallbladderendometriosis. The patient recovered well and has hadno recurrence of the disease to date.展开更多
Objective To study HOXAll expression and its correlation with that of the progesterone receptor (PR) gene in human endometriumMethods In situ hybridization and semi-quantitative RT-PCR were used. Results HOXAll mRNA w...Objective To study HOXAll expression and its correlation with that of the progesterone receptor (PR) gene in human endometriumMethods In situ hybridization and semi-quantitative RT-PCR were used. Results HOXAll mRNA was detected in both stromal and glandular cells of normal endometrium by in situ hybridization. But the expression levels in the glandular cells had a dramatic decline or even disappearance at mid-secretory stage. Semi-quantitative RT-PCR analysis, however, demonstrated that the total expression levels of HOXAll mRNA were markedly increased in the mid-secretory endometrium, which suggested that there was an increased expression in stromal cells. Similar results were obtained for PR gene expression in human endometrium by in situ hybridization and semi-quantitative RT-PCR analysis.Conclusion HOXAll gene spatial and temporal expression patterns were similar to that of PR gene in endometrium across menstrual cycle, and HOXAll was closely related to the endometrial proliferation and differentiation during menstrual cycle, especially the establishment of receptive status in implantation.展开更多
Many women track their daily basal body temperature (BBT), an important factor in reproductive status, as a part of fertility self-management. This study involved 135 patients who had undergone conventional infertilit...Many women track their daily basal body temperature (BBT), an important factor in reproductive status, as a part of fertility self-management. This study involved 135 patients who had undergone conventional infertility treatment;they had weekly acupuncture treatment and we assessed BBT, menstrual cycle, menstrual period and menstrual bleeding amount pre- and post-treatment. We also analyzed the rate of insufficient description of reproductive parameters, comparing patients who had delivered a baby with those who had a miscarriage and those who did not become pregnant. Menstrual cycle and period did not show notable changes pre- and post-acupuncture treatment in all groups. Menstrual bleeding amount decreased in the no-pregnancy group. There was a suggestion that acupuncture decreased very long menstrual cycle (e.g. bimonthly) to monthly. The insufficient description rate of menstrual bleeding amount was high in all groups. Weekly discussion about monitoring reproductive parameters could improve patients’ awareness in self-management. To prevent miscarriage patients needed psychological and medical advice for careful self-management in pregnancy and menstrual cycle.展开更多
Immunoglobulin G(IgG)is the most abundant plasma glycoprotein and a prominent humoral immune mediator.Glycan composition affects the affinity of IgG to ligands and consequent immune responses.The modification of IgG N...Immunoglobulin G(IgG)is the most abundant plasma glycoprotein and a prominent humoral immune mediator.Glycan composition affects the affinity of IgG to ligands and consequent immune responses.The modification of IgG N-glycosylation is considered to be one of the various mechanisms by which sex hormones modulate the immune system.Although the menstrual cycle is the central sex hormonerelated physiological process in most women of reproductive age,IgG N-glycosylation dynamics during the menstrual cycle have not yet been investigated.To fill this gap,we profiled the plasma IgG Nglycans of 70 healthy premenopausal women at 12 time points during their menstrual cycles(every 7 days for 3 months)using hydrophilic interaction ultra-performance liquid chromatography(HILIC-UPLC).We observed cyclic periodic changes in the N-glycosylation of IgG in association with the menstrual cycle phase and sex hormone concentration in plasma.On the integrated cohort level,the modeled average menstrual cycle effect on the abundance of IgG N-glycosylation traits was low for each trait,with the highest being 1.1%for agalactosylated N-glycans.However,intrapersonal changes were relatively high in some cases;for example,the largest difference between the minimum and maximum values during the menstrual cycle was up to 21%for sialylated N-glycans.Across all measurements,the menstrual cycle phase could explain up to 0.72%of the variation in the abundance of a single IgG glycosylation trait of monogalactosylation.In contrast,up to 99%of the variation in the abundance of digalactosylation could be attributed to interpersonal differences in IgG N-glycosylation.In conclusion,the average extent of changes in the IgG N-glycopattern that occur during the menstrual cycle is small;thus,the IgG N-glycoprofiling of women in large sample-size studies can be performed regardless of menstrual cycle phase.展开更多
文摘The menstrual cycle has been a topic of interest in relation to behavior and cognition for many years, with historical beliefs associating it with cognitive impairment. However, recent research has challenged these beliefs and suggested potential positive effects of the menstrual cycle on cognitive performance. Despite these emerging findings, there is still a lack of consensus regarding the impact of the menstrual cycle on cognition, particularly in domains such as spatial reasoning, visual memory, and numerical memory. Hence, this study aimed to explore the relationship between the menstrual cycle and cognitive performance in these specific domains. Previous studies have reported mixed findings, with some suggesting no significant association and others indicating potential differences across the menstrual cycle. To contribute to this body of knowledge, we explored the research question of whether the menstrual cycles have a significant effect on cognition, particularly in the domains of spatial reasoning, visual and numerical memory in a regionally diverse sample of menstruating females. A total of 30 menstruating females from mixed geographical backgrounds participated in the study, and a repeated measures design was used to assess their cognitive performance in two phases of the menstrual cycle: follicular and luteal. The results of the study revealed that while spatial reasoning was not significantly related to the menstrual cycle (p = 0.256), both visual and numerical memory had significant positive associations (p < 0.001) with the luteal phase. However, since the effect sizes were very small, the importance of this relationship might be commonly overestimated. Future studies could thus entail designs with larger sample sizes, including neuro-biological measures of menstrual stages, and consequently inform competent interventions and support systems.
基金Supported by Scientific research of Zhejiang Provincial Department of Health(Wireless Sensor Model of Menstrual Cycle Health Monitoring,No.2016ZA049)Young Scientists of Zhejiang Provincial Department of Health(Effects of Tiaojing Decoction on Expression of TGF-β3/Smads Pathway in Premature Ovarian Failure Model Rats,No.2020ZQ021)National Science Foundation for Fostering Talents in Basic Research of the National Natural Science Foundation of China(Establishment and Evaluation of Female Pre Pregnancy Health Risk Identification and Evaluation Model,No.81202737)。
文摘OBJECTIVE:To evidently assess the applicability of regulate menstrual cycle(MC)characteristics in Traditional Chinese Medicine(TCM)as an indicator for fertility.METHODS:A community-based prospective cohort study was conducted in China.Between January 2010 and December 2012,women who were willing to conceive within 2 years were enrolled in the study.Other than the MC length pattern,a well-adopted MC characteristic,menstrual blood color and clots were specifically concerned for women enrolled.All participants were followed up in 2 years by trained nurses.Pregnancy rate,fecundability odds ratio(FOR)and risk of miscarriage were assessed as fertility outcomes.RESULTS:A total of 2109 women were effectively included in this cohort for analysis.Results show that women with irregular MC length were less likely to achieve conception(FOR_(irregular)=0.59;95%CI=0.45-0.77,P<0.001).Menstrual blood in bright red color was also associated with decline in likelihood of conception(FOR=0.79;95%CI=0.63-0.98,P=0.04).Women with menstrual blood in light red were at higher risk of miscarriage(OR=2.39;95%CI=0.91-6.28,P=0.08).No significant impact was found between menstrual blood clots and fertility outcomes(FOR=1.02,95%CI=0.83-1.25,P=0.88;OR=1.2695%CI=0.77-2.07,P=0.35).CONCLUSIONS:MC characteristics can be an effective and simple indicator for women’s fertility.Increasing the knowledge of MC characteristics for women in reproductive ages would bring great benefits to their preconception health conditions.
文摘Premenstrual and menstrual exacerbation of psychiatric disorders is a significant area of concern in female mental health.Many females experience a worsening of psychiatric symptoms in the premenstrual and menstrual phases of their menstrual cycle,including heightened anxiety,depression,irritability,and mood swings.These exacerbations are most commonly associated with premenstrual syndrome and premenstrual dysphoric disorder that are characterized by severe emotional and physical symptoms that interfere with daily functioning.The hormonal fluctuations during the menstrual cycle,particularly changes in estrogen and progesterone levels,are believed to play a pivotal role in these exacerbations.Psychiatric disorders such as depression,anxiety,bipolar disorder,and schizophrenia may be influenced by these hormonal changes,with many females reporting an increase in symptom severity during specific phases of the cycle.The mechanisms behind this phenomenon remain complex,with both biological and psychosocial factors contributing to the heightened vulnerability.Clinical management includes careful monitoring of symptom patterns in relation to the menstrual cycle,with treatment options ranging from lifestyle modifications and psychotherapy to pharmacological interventions such as antidepressants and hormonal therapies.Understanding the link between menstruation and psychiatric disorders is essential for improving diagnosis and tailoring effective treatment strategies for affected individuals.
基金supported by the National Natural Science Foundation of China(No.42277417 and 82130097)the Major Talent Program of Guangdong Provincial(No.2021QN02Y944)+2 种基金The Shanghai Birth Cohort was financially supported by the National Natural Science Foundation of China(Nos.41991314 and 81530086)the Shanghai Municipal Health Commission(Nos.GWIII-26,GWIV-26,and 2020CXJQ01)the Shanghai Jiao Tong University School of Medicine,Xinhua Hospital and the National Human Genetic Resources Sharing Service Platform(No.2005DKA21300).
文摘Menstrual cycle characteristics constitute one of the significant female fertility indicators.Previous epidemiological studies have shown that exposure to environmental chemicals could affect menstrual cycle characteristics,but the knowledge remains limited overall.Per-and polyfluoroalkyl substances(PFAS)have been identified as potential reproductive toxicants,while previous studies mainly focused on several legacy PFAS chemicals but generally failed to explore the outcomes from exposure to a complex mixture of both legacy and emerging PFAS.Besides,the modification effect of physical activity is rarely considered.In the present study,we explored the associations of exposure to a suite of legacy and emerging PFAS and menstrual cycle regularity as well as the potential modification by physical activity based on a pre-conception cohort in Shanghai(China)with the participation of 1001 reproductive-aged women.A total of 20 PFAS chemicals with detection frequency>80%,which were derived from the PFAS exposure profile of the same population in our previous study,were included in the confounder-adjusted logistic regression and Bayesian kernel machine regression(BKMR)analysis.In individual PFAS analysis,after adjustment of the covariates,∑2m-PFOS(the sum of all perfluoro-dimethylhexane sulfonates)was significantly associated with menstrual cycle irregularity with an odds ratio(OR)of 1.35(95%confidence interval,CI:1.09,1.67)as well as long cycles(OR=1.37;95%CI:1.08,1.70).In addition,a significant positive association was also found between perfluoro-n-nonanoic acid(PFNA)and long cycles(OR=1.40;95%CI:1.06,1.86).No significant associations were found between the PFAS mixture and the menstrual cycle characteristics as revealed by BKMR analysis,while the significant association between ∑2m-PFOS and menstrual cycle irregularity was also observed in the mixture exposure model.Subgroup analysis stratified by physical activity level showed that the associations between ∑2m-PFOS and menstrual cycle irregularity as well as long cycles were more pronounced in the inactive physical activity subgroup.This study suggested that branched PFOS(i.e.,∑2m-PFOS)might act as the predominant risk factor for menstrual cycle irregularity,and physical activity could influence the risks.
文摘Background:Acne vulgaris is a common skin disorder that impacts quality of life.Both acne and menstrual symptoms share a hormonal pathogenesis,often linked to hormonal imbalances in women.This suggests a relationship between acne counts and the various phases of the menstrual cycle.Objective:In this study,we aimed to assess the relationship between acne counts and the menstrual cycle in healthy young Indian women suffering from mild to moderate acne.The objective was to further understand the role of the various phases of the menstrual cycle in acne flares.Methods:This study explores the data from two(2)previously conducted clinical trials.The studies originally aimed to evaluate the efficacy of topical creams in the reduction of acne lesion count on the face.The data from these studies were retrieved and compiled.The number of days between the last menstrual period(LMP)and the actual day of the visit was calculated and regrouped as follows:1–7 days(early to mid-follicular phase),8–15 days(mid-to late follicular phase),16–24 days(post-ovulation to early luteal phase)and>24 days(mid-to late luteal phase).Subsequently,the global acne count—recorded by the dermatologist as part of the study procedures—was cross-tabulated with these menstrual phases using measures of central tendency and dispersion,followed by inferential analyses to evaluate differences between groups.Results:On average,the female subjects visiting the centre during the end of their luteal phase or bleeding days had higher acne counts(p=0.032).This effect was statistically significant only at the baseline visit,which followed a 14-day washout period involving the use of a neutral cleanser and adoption of a general skincare routine.During the product use phase,the effect of the menstrual cycle diminished.Conclusion:The study demonstrates an association between acne flares and the menstrual cycle:acne counts are likely to be higher by an average of 5–6 units during the late luteal and early follicular phases.Such differences may impact the outcome of clinical trials if not carefully monitored and accounted for in study designs and data analysis.
文摘Background Polycystic ovary syndrome （PCOS） is considered to be the most common endocrine disorder in women of reproductive age.The involvement of an abnormal menstrual cycle in the etiology of PCOS remains unclear.We aimed to analyze the characteristics of abnormal menstrual cycles and their association with PCOS in community and hospital patient populations.Methods Women with PCOS identified from 2111 permanent female residents in the community of Beijing and 506 outpatients obtained from the reproductive clinic of Peking University Third Hospital were recruited for this study,comprising the PCOS community group and the PCOS hospital group, respectively.Each group was further divided into four subgroups according to the length of menstrual cycles： 〈21 days; 21-34 days; 35-60 days; and 〉60 days.Women in each group were interviewed using a questionnaire to assess factors including age, age of menarche, menstrual cycle history, related family history, and modified Ferriman-Gallwey （mF-G） score.All women received transvaginal ultrasound scan and had fasting blood samples taken for endocrine evaluation.A two-tailed P value of 〈0.05 was considered significant.Results In the community population, the prevalence of abnormal menstrual cycle was 27.19% （574/2111）.The prevalence of PCOS in the community was 6.11% （129/2111） according to Rotterdam criteria.In the community group,the most common menstrual cycle length was 35-60 days, whereas for the hospital group, it was 〉60 days.In both the community and hospital groups, the most common phenotype of PCOS was that of Oligo/amenorrhea＋PCO＋hyperandrogenism （HA） （O＋P＋H） （P=0.000）.With increasing cycle length of 35-60 days to 〉60 days, the percentages of Oligo/amenorrhea＋PCO （O＋P） and O＋P＋H were found to significantly decrease in the community group and significantly increase in the hospital group （P=0.000 for each）.In the hospital group, as the menstrual cycle length increased from 35-60 days to 〉60 days, the rate of spontaneous abortion increased significantly （P=0.000）, meanwhile the rate of poorly-secreted endometrium and abnormal endometrial hyperplasia increased significantly （P=0.000）.Conclusions The prevalence of PCOS in the Beijing community of women was 6.11%.Oligo/arnenorrhea was the most common type of abnormal menstrual cycle and may be an indicator for PCOS and endometrial lesions.Gynecologists should seek relevant medical information from women in the community to promptly diagnose PCOS and then follow up patients for potential development of subsequent complications.
基金Supported by Abbott(32F Crio's Plaza,388 West Nanjing Road,Shanghai,China),No.A14-390.
文摘BACKGROUND Dydrogesterone has shown significant efficacy in treatment of irregular menstrual cycle due to abnormal uterine bleeding-ovulation dysfunction(AUB-O),but there were few relevant studies.This observational study was designed to evaluate the effectiveness of dydrogesterone for the treatment of Chinese patients with AUB-O.AIM To evaluate the effects of dydrogesterone on menstrual-cycle(MC)regularization and metabolism in the patients with AUB-O.METHODS A prospective,non-interventional,single-arm,post-marketing observational study was conducted.Chinese women aged 16 years or above with AUB-O who had been prescribed dydrogesterone were enrolled.The patients were treated with dydrogesterone 10 mg from day 16 to day 25 of each cycle,consecutively for at least 3 cycles.The main outcome was defined as the percentage of patients whose MCs returned to normal(defined as 21 d<menstrual cycle≤35 d)after three cycles of dydrogesterone treatment.RESULTS One hundred and fourteen women with AUB-O were enrolled in the present study.Of 89 patients who completed treatment,72(80.9%)achieved a regular MC at the end of the 3rd circle.The level of androgen,including testosterone and dehydroepiandrosterone sulfate,declined significantly(P=0.01 and 0.031,respectively),whereas other hormone levels remained steady.During the treatment,44/80(55.0%)subjects in the per-protocol set had reported biphasic basal body temperature.CONCLUSION Dydrogesterone therapy was effective in achieving MC regularization for Chinese patients with AUB-O.
文摘Obejctive To study the lymphocytes, perforin protein and mRNA expression in endometrium of different phases in the menstrual cycle and to explore the regularity and role of the lymphocytes and perforin in the reproductive system Methods Immunohistochemical and in situ hybridization techniques were employed to demonstrate the population, phenotype and mediator (perforin) of lymphocytes in the proliferative and secretory endometrium Results In different phases of the endometrium, there were very few CD 3 + typical T lymphocytes, CD 4 + helper lymphocytes and CD 8 + suppressor/cytotoxic T lymphocytes, while CD 56 + lymphocyte (also named NK like cell) were abundant CD 56 + lymphocytes were absent in postmenopausal endometrium A double immunohistochemical labelling method demonstrated the co expression of perforin protein and CD 56 antigen of cells in different phases of the endometrium Quantitative analysis of CD 56 + lymphocytes and perforin positive cells increased in number from the proliferative to the secretory endometrium ( P <0 05) In situ hybridization analysis showed that perforin mRNA positive cells formed islands in proliferative endometrial stroma, but were scattered in secretory endometrium There was difference between perforin gene expression and protein expression in the proliferative endometrium Conclusions Lymphocytes and perforin expression in the endometrium at different phases of the menstrual cycle are specific and may play an important role in the reproductive system They may exert a positive influence on embryo implantation and be involved in endometrial stroma breakdown during menstruation
文摘Background Nucleophosmin plays a critical role in embryonic development. This study aimed to examine the expression pattern of nucleophosmin in glandular epithelium of human endometrium during the menstrual cycle. Methods Endometrial tissues used for this study were obtained from 46 non-pregnant patients who underwent hysterectomy which had been performed to treat benign diseases. Nucleophosmin expression was assessed by in situ hybridization and immunohistochemistry. Results At the early-, mid- and late-proliferative phase, nucleophosmin mRNA was highly expressed in glandular epithelium of human endometrium. At the secretory phase, the expression of nucleophosmin mRNA was reduced in glandular epithelium in early-secretory phase, and the expression in mid- and late-secretory phases was not detected. Similarly, nucleophosmin protein was strongly expressed in endometrial glands throughout the proliferative phase, but was gradually reduced during secretory phase. Conclusion Nucleophosmin mRNA and protein are expressed in glandular epithelium of human endometrium throucIhout the menstrual cycle.
文摘Background:Chronic inflammation has been reported as a triggering and driving factor in the pathogenesis of various diseases and is believed to be closely associated with tumor pathogenesis.In this study,we aimed to explore the changes of the inflammatory stress-related indexes during the menstrual period.Methods:Cytokines and tumor-associated carbohydrate antigens from 76 childbearing-age women during the follicular phase,luteal phase,and menstrual period were measured.Results:The expression of inflammatory indexes,such as platelets(PLT),lymphocytes(Lym),the percentage of Lym(Lym%),neutrophils(Neu),the percantage of Neu(Neu%),neutrophil-to-lymphocyte ratio(NLR),interleukin-6(IL-6),and cancer antigen 125(CA125),reached the highest level during the menstrual period.Conclusions:Female genital organs are under inflammatory stress during menstruation,which hints that the changes of the inflammatory state of the body play an important role in the pathogenesis of diseases.
文摘Objective: To evaluate the effect of operation timing during menstrual cycle on the prognosis of patients with breast cancer. Methods: 218 operated premenopausal patients with breast cancer had been followedup for more than 10 years. Prognostic factors related to these patients had been selected to be underwent univariate analysis and multivariate analysis by Cox regression model. Results: Univariage analysis showed that the menstrual timing of operation, as other Known prognostic factors (tumor size, node status, histological grade, TNM classification, adjuvent systemic therapy, etc), had an influence on the patients' outcome. Multivariate analysis by Cox regression model indicated that diseasefree rate and overall survival rate of patients operated during the periovulatory phase (123 cases) were significantly superior to those operated during the premenstrual phase (95 cases) (P<0.01). There were no significant differences in prognosis between patients who received operations during the follicular phase (96 cases) and those during the luteal phase (122 cases) (P>0.01). Conclusion: Probably there is an optimal timing of operation for premenopausal breast cancer patients. Any prospective, randomized clinical study should be carried out to make this problem clear.
文摘Gender-related physiological variations in gastrointestinal(GI)symptomatology have been observed in women of reproductive age.Many women experience cyclical changes in GI symptomatology during their menstrual cycle,particularly alteration in their bowel habits.Physiological studies of healthy women during the menstrual cycle showed a prolonged GI transit time during the luteal phase,either in the oro-cecumroute or in the colon.Worsened GI symptoms,such as abdominal pain,bloating or diarrhea are observed in patients with irritable bowel syndrome(IBS)during menses.This may be due to elevated prostaglandin levels during menses,with an enhanced perception of viscera-somatic stimuli resulting in nausea,abdominal distension and pain.Also patients with IBS or IBD demonstrate a cyclical pattern more closely related to their bowel habits than healthy controls.Women with inflammatory bowel disease(IBD)also have exacerbated symptoms during menses;however,it is unclear whether this relates to physiological variation or disease exacerbation in IBS or IBD.Studies examining the association of the menstrual cycle and GI symptomatology in patients with IBS or IBD,have not yet clarified the underlying mechanisms.Moreover medications—such as non-steroidal anti-inflammatory drugs and oral contraceptive pills used for dysmenorrhea and menstrual migraine in those patients have not well been controlled for in the previous studies,which can contribute to further bias.Understanding changes in GI symptomatology during the menstrual cycle may help to determine the true extent of disease exacerbation and proper management strategy.
文摘To observe the therapeutic effect of menstrual cycle weigh-loss method in women with obesity.1,068 cases of women with obesity were treated respectively by the corresponding acupoints upon menstrual cycle,for clinical observation of the therapeutic effects.The total effective rate was 92.0%after I course.Menstrual cycle weight-loss method has an extremely remarkable effect on female obesity.
文摘The endothelial function has been proven to be an important factor in the pathogenesis of atheroscle-rosis, hypertension and heart failure. The flow-mediated vasodilation (FMD) of the peripheral artery is an endothelium-dependent function. Brachial-artery ultrasound scanning is the popular method for evaluat-ing FMD.
文摘In order to explore the relationship between menstrual cycle and pregnancy cycle in women with progesterone level. Depends on the human body physiological hormone main factors of estradiol and progesterone in both human ovarian secretion hormone cycles, the researchers found that adult women long-term depression, anxiety and other psychological mood swings disorder risk for death at least more than two times higher than the adult male, and the physiological sex differences in certain part up and can also by the adult female physiological cyclic changes in hormones into the body. The cycle changes in ovarian hormone levels during the process were predicted to affect the results. This paper first introduces the direct effect of progesterone on female emotion during the physiological cycle, and then analyzes its medicinal value due to its regulating function in the physiological cycle.
文摘Objective: Since not all women wish to conceive a child through aggressive treatment, we investigated the usefulness of modified repeated intracyclic clomiphene citrate (CC) therapy (repeated CC therapy) as a newly devised administration method. Methods: We evaluated the effects of CC administration on menstrual cycle length and retrospectively compared ovulation and pregnancy in 220 women who received CC at our hospital. Patients in the conventional method group received 50 mg per day for five days, starting on the fifth day of menstruation (withdrawal bleeding). Groups with and without menstrual cycle shortening after conventional CC administration were compared. The repeated CC therapy group was also compared with the non-shortened group. Repeated CC therapy was administered for the first five days as in the conventional method, and a second five-day repeat treatment was administered after an interval of five to seven days. Pregnancy rates, including indirect pregnancies, were evaluated by three different methods. Results: Ovulation and pregnancy rates were significantly better in the shortened group than in the non-shortened group (P < 0.001 and P = 0.010, respectively). Even in the non-shortened group, ovulation and pregnancy rates including indirect pregnancies were significantly improved when ovulation was observed with repeated CC therapy (P < 0.001 and P = 0.022, respectively). Conclusions: For patients whose menstrual cycle was not improved or shortened, repeated CC therapy as the newly devised CC administration method is useful as the next step after the conventional CC administration method.
文摘A 17-year-old girl with colicky abdominal pain andchronic anemia presented to the gastrointestinal serviceof the University Hospital of Essen. In the routineworkup, there were no pathological findings despitethe anemia. Because of the fluctuation of symptomswith a climax at the time of menstruation, consecutiveultrasound studies were performed revealing a visiblemass inside the gallbladder. This finding was confirmedby a magnetic resonance imaging (MRI) study performedat the same time. Because of the severe anemia by thattime, a cholecystectomy was performed, and histologyreconfirmed the diagnosis of isolated gallbladderendometriosis. The patient recovered well and has hadno recurrence of the disease to date.
文摘Objective To study HOXAll expression and its correlation with that of the progesterone receptor (PR) gene in human endometriumMethods In situ hybridization and semi-quantitative RT-PCR were used. Results HOXAll mRNA was detected in both stromal and glandular cells of normal endometrium by in situ hybridization. But the expression levels in the glandular cells had a dramatic decline or even disappearance at mid-secretory stage. Semi-quantitative RT-PCR analysis, however, demonstrated that the total expression levels of HOXAll mRNA were markedly increased in the mid-secretory endometrium, which suggested that there was an increased expression in stromal cells. Similar results were obtained for PR gene expression in human endometrium by in situ hybridization and semi-quantitative RT-PCR analysis.Conclusion HOXAll gene spatial and temporal expression patterns were similar to that of PR gene in endometrium across menstrual cycle, and HOXAll was closely related to the endometrial proliferation and differentiation during menstrual cycle, especially the establishment of receptive status in implantation.
文摘Many women track their daily basal body temperature (BBT), an important factor in reproductive status, as a part of fertility self-management. This study involved 135 patients who had undergone conventional infertility treatment;they had weekly acupuncture treatment and we assessed BBT, menstrual cycle, menstrual period and menstrual bleeding amount pre- and post-treatment. We also analyzed the rate of insufficient description of reproductive parameters, comparing patients who had delivered a baby with those who had a miscarriage and those who did not become pregnant. Menstrual cycle and period did not show notable changes pre- and post-acupuncture treatment in all groups. Menstrual bleeding amount decreased in the no-pregnancy group. There was a suggestion that acupuncture decreased very long menstrual cycle (e.g. bimonthly) to monthly. The insufficient description rate of menstrual bleeding amount was high in all groups. Weekly discussion about monitoring reproductive parameters could improve patients’ awareness in self-management. To prevent miscarriage patients needed psychological and medical advice for careful self-management in pregnancy and menstrual cycle.
基金funded by the European Structural and Investment Funds grant for the Croatian National Centre of Research Excellence in Personalized Healthcare(KK.01.1.1.01)Australia-China International Collaborative Grant(NHMRC APP1112767-NSFC 81561128020)+1 种基金National Natural Science Foundation of China(81773527 and 81573215)the European Structural and Investment Funds CEKOM(KK.01.2.2.03.0006).
文摘Immunoglobulin G(IgG)is the most abundant plasma glycoprotein and a prominent humoral immune mediator.Glycan composition affects the affinity of IgG to ligands and consequent immune responses.The modification of IgG N-glycosylation is considered to be one of the various mechanisms by which sex hormones modulate the immune system.Although the menstrual cycle is the central sex hormonerelated physiological process in most women of reproductive age,IgG N-glycosylation dynamics during the menstrual cycle have not yet been investigated.To fill this gap,we profiled the plasma IgG Nglycans of 70 healthy premenopausal women at 12 time points during their menstrual cycles(every 7 days for 3 months)using hydrophilic interaction ultra-performance liquid chromatography(HILIC-UPLC).We observed cyclic periodic changes in the N-glycosylation of IgG in association with the menstrual cycle phase and sex hormone concentration in plasma.On the integrated cohort level,the modeled average menstrual cycle effect on the abundance of IgG N-glycosylation traits was low for each trait,with the highest being 1.1%for agalactosylated N-glycans.However,intrapersonal changes were relatively high in some cases;for example,the largest difference between the minimum and maximum values during the menstrual cycle was up to 21%for sialylated N-glycans.Across all measurements,the menstrual cycle phase could explain up to 0.72%of the variation in the abundance of a single IgG glycosylation trait of monogalactosylation.In contrast,up to 99%of the variation in the abundance of digalactosylation could be attributed to interpersonal differences in IgG N-glycosylation.In conclusion,the average extent of changes in the IgG N-glycopattern that occur during the menstrual cycle is small;thus,the IgG N-glycoprofiling of women in large sample-size studies can be performed regardless of menstrual cycle phase.
