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Nail abnormalities in upper extremity transplantation:Perspectives and insights from systemic diseases and organ transplantation
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作者 Naga Anvesh Kodali Ramu Janarthanan +6 位作者 Zeynep Demir Bedreddin Sazoglu Omer Faruk Dirican Dmitry Tuder Fatih Zor Yalcin Kulahci Vijay S Gorantla 《World Journal of Transplantation》 2026年第1期115-128,共14页
Nail changes following upper extremity transplantation(UET)cannot be overlooked as they possess diagnostic and prognostic relevance in allotransplantation of upper limbs.This comprehensive review explores nail and nai... Nail changes following upper extremity transplantation(UET)cannot be overlooked as they possess diagnostic and prognostic relevance in allotransplantation of upper limbs.This comprehensive review explores nail and nail bed related changes encountered in UET recipients in the literature.The differential diagnosis of nail abnormalities in UET includes a wide range of systemic,local and iatrogenic conditions other than immune responses to the allograft.It requires interdisciplinary evaluation by primary transplant surgeons,pathologists,dermatologists and immunologists.The possible underlying mechanisms of nail pathology in UET and the management are discussed.It also underscores the importance of onychodystrophy and need for timely intervention and to improve outcomes in UET recipients. 展开更多
关键词 Vascularized composite allotransplantation Upper extremity transplantation Hand transplantation Nail abnormalities Onychodystrophy Graft rejection Nailfold capillaroscopy
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Silent cardiac burden:Echocardiographic abnormalities and their predictors in kidney transplant candidates and their impact on graft function
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作者 Nihal Mohammed Sadagah Muhammad Abdul Mabood Khalil +3 位作者 Hinda Hassan Khideer Mahmood Ibtisam Ali Alghamdi Ghada Abdulrahman Buridi Salem H Al-Qurashi 《World Journal of Transplantation》 2026年第1期167-181,共15页
BACKGROUND An echocardiogram is an essential tool in the evaluation of potential kidney transplant recipients(KTRs).Despite cardiac clearance,potential KTRs still have structural and functional abnormalities.Identifyi... BACKGROUND An echocardiogram is an essential tool in the evaluation of potential kidney transplant recipients(KTRs).Despite cardiac clearance,potential KTRs still have structural and functional abnormalities.Identifying the prevalence of these abnormalities and understanding their predictors is vital for optimizing pretransplant risk stratification and improving post-transplant outcomes.AIM To determine the prevalence of left ventricular hypertrophy(LVH),left ventricular systolic dysfunction(LVSD),diastolic dysfunction(DD),pulmonary hypertension(PH),and their predictors,and to assess their impact on graft function in pre-transplant candidates.METHODS The study included all successful transplant candidates older than 14 who had a baseline echocardiogram.Binary logistic regression models were constructed to identify factors associated with LVH,LVSD,DD,and PH.RESULTS Out of 259 patients,LVH was present in 64%(166),12%(31)had LVSD,27.5%(71)had DD,and 66(25.5%)had PH.Independent predictors of LVH included male gender[odds ratio(OR):2.51;95%CI:1.17-5.41 P=0.02],PH(OR=2.07;95%CI:1.11-3.86;P=0.02),DD(OR:2.47;95%CI:1.29-4.73;P=0.006),and dyslipidemia(OR=1.94;95%CI:1.07-3.53;P=0.03).Predictors for LVSD included patients with DD(OR=3.3,95%CI:1.41-7.81;P=0.006)and a family history of coronary artery disease(OR=4.50,95%CI:1.33-15.20;P=0.015).Peritoneal dialysis was an independent predictor for DD(OR=10.03;95%CI:1.71-58.94,P=0.011).The presence of LVH(OR=3.32,95%CI:1.05-10.55,P=0.04)and mild to moderate or moderate to severe mitral regurgitation(OR=4.63,95%CI:1.45-14.78,P=0.01)were significant factors associated with PH.These abnormalities had no significant impact on estimated glomerular filtration at discharge,6 months,1 year,or 2 years post-transplant.CONCLUSION Significant echocardiographic abnormalities persist in a potential transplant candidate despite cardiac clearance,although they don’t affect future graft function.Understanding the risk factors associated with these abnormalities may help clinicians address these factors pre-and post-transplant to achieve better outcomes. 展开更多
关键词 Echocardiographic abnormalities Kidney transplant PREDICTORS Graft function
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Novel homozygous SPAG17 variants cause human male infertility through multiple morphological abnormalities of spermatozoal flagella related to axonemal microtubule doublets 被引量:1
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作者 Tao Liu Fazal Rahim +15 位作者 Meng-Lei Yang Meftah Uddin Jing-Wei Ye Imtiaz Ali Yousaf Raza Abu Mansoor Muhammad Shoaib Mujahid Hussain Ihsan Khan Basit Shah Asad Khan Ahmad Nisar Hui Ma Bo Xu Wasim Shah Qing-Hua Shi 《Asian Journal of Andrology》 2025年第2期245-253,共9页
Male infertility can result from impaired sperm motility caused by multiple morphological abnormalities of the flagella(MMAF).Distinct projections encircling the central microtubules of the spermatozoal axoneme play p... Male infertility can result from impaired sperm motility caused by multiple morphological abnormalities of the flagella(MMAF).Distinct projections encircling the central microtubules of the spermatozoal axoneme play pivotal roles in flagellar bending and spermatozoal movement.Mammalian sperm-associated antigen 17(SPAG17)encodes a conserved axonemal protein of cilia and flagella,forming part of the C1a projection of the central apparatus,with functions related to ciliary/flagellar motility,skeletal growth,and male fertility.This study investigated two novel homozygous SPAG17 mutations(M1:NM_206996.2,c.829+1G>T,p.Asp212_Glu276del;and M2:c.2120del,p.Leu707*)identified in four infertile patients from two consanguineous Pakistani families.These patients displayed the MMAF phenotype confirmed by Papanicolaou staining and scanning electron microscopy assays of spermatozoa.Quantitative real-time polymerase chain reaction(PCR)of patients’spermatozoa also revealed a significant decrease in SPAG17 mRNA expression,and immunofluorescence staining showed the absence of SPAG17 protein signals along the flagella.However,no apparent ciliary-related symptoms or skeletal malformations were observed in the chest X-rays of any of the patients.Transmission electron microscopy of axoneme cross-sections from the patients showed incomplete C1a projection and a higher frequency of missing microtubule doublets 1 and 9 compared with those from fertile controls.Immunofluorescence staining and Western blot analyses of spermatogenesis-associated protein 17(SPATA17),a component of the C1a projection,and sperm-associated antigen 6(SPAG6),a marker of the spring layer,revealed disrupted expression of both proteins in the patients’spermatozoa.Altogether,these findings demonstrated that SPAG17 maintains the integrity of spermatozoal flagellar axoneme,expanding the phenotypic spectrum of SPAG17 mutations in humans. 展开更多
关键词 C1a projection central apparatus male infertility multiple morphological abnormalities of the flagella SPAG17
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Research Progress on Embryonic Zona Pellucida Abnormalities
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作者 Wang Meng Li Shaojie Yang Jinji 《Science International Innovative Medicine》 2025年第1期65-69,共5页
The zona pellucida(ZP)is a glycoprotein matrix surrounding the oocyte and early embryo,playing a crucial role in fertilization,embryonic development,and pre-implantation protection.Zona pellucida abnormalities,though ... The zona pellucida(ZP)is a glycoprotein matrix surrounding the oocyte and early embryo,playing a crucial role in fertilization,embryonic development,and pre-implantation protection.Zona pellucida abnormalities,though relatively rare,significantly impact reproductive success by affecting fertilization,embryo development,and implantation.This review systematically outlines the clinical manifestations,classification,underlying mechanisms,and therapeutic strategies related to ZP abnormalities.Studies indicate that ZP abnormalities are associated with fertilization failure,impaired embryonic development,and implantation failure.Techniques such as intracytoplasmic sperm injection(ICSI)and assisted hatching(AH),along with clinical strategies like growth hormone pretreatment and optimized ovulation induction protocols,have shown promise in improving reproductive outcomes for affected patients.Future research should focus on elucidating the molecular genetic mechanisms of ZP abnormalities and developing more precise interventions. 展开更多
关键词 Zona pellucida abnormalities fertilization failure assisted reproductive technology intracytoplasmic sperm injection AH clinical outcomes
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Skeletal abnormalities caused by a Connexin43_(R239Q)mutation in a mouse model for autosomal recessive craniometaphyseal dysplasia
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作者 Yasuyuki Fujii Iichiro Okabe +7 位作者 Ayano Hatori Shyam Kishor Sah Jitendra Kanaujiya Melanie Fisher Rachael Norris Mark Terasaki Ernst J.Reichenberger I-Ping Chen 《Bone Research》 2025年第2期370-383,共14页
Craniometaphyseal dysplasia(CMD),a rare craniotubular disorder,occurs in an autosomal dominant(AD)or autosomal recessive(AR)form.CMD is characterized by hyperostosis of craniofacial bones and metaphyseal flaring of lo... Craniometaphyseal dysplasia(CMD),a rare craniotubular disorder,occurs in an autosomal dominant(AD)or autosomal recessive(AR)form.CMD is characterized by hyperostosis of craniofacial bones and metaphyseal flaring of long bones.Many patients with CMD suffer from neurological symptoms.The pathogenesis of CMD is not fully understood. 展开更多
关键词 connexin r q mutation mouse model hyperostosis craniofacial bones metaphyseal flaring craniometaphyseal dysplasia skeletal abnormalities autosomal recessive craniotubular disorderoccurs
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Propacetamol-related postoperative liver enzyme abnormalities:insights from a clinical prediction nomogram study
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作者 Shuhong Liang Haiyang Meng +4 位作者 Kai Kong Chaoying Kang Ning Liu Qianqian Yuan Jie Yang 《Journal of Chinese Pharmaceutical Sciences》 2025年第4期334-344,共11页
To investigate the correlation between propacetamol and postoperative liver enzyme abnormalities among patients,a retrospective analysis was conducted on inpatients in the thoracic surgery department spanning from Jan... To investigate the correlation between propacetamol and postoperative liver enzyme abnormalities among patients,a retrospective analysis was conducted on inpatients in the thoracic surgery department spanning from January 1 to June 30,2023.Causality assessment regarding propacetamol and postoperative liver enzyme abnormalities was performed using the updated Roussel Uclaf Causality Assessment Method(RUCAM).Furthermore,independent risk factors for liver enzyme abnormalities were identified through both univariate and multivariate analyses,followed by the construction and validation of a clinical nomogram.A total of 247 patients who received propacetamol were ultimately included in the study.Liver enzyme abnormalities post-surgery were more accurately predicted by considering the daily dose of propacetamol and the number of medications(OR(95%CI),4.831(2.797,8.344),P<0.001;10.007(3.878,25.823),P<0.001).A clinical predictive nomogram model was developed,incorporating these two independent risk factors,which exhibited favorable discrimination(AUC(95%CI),0.811(0.750,0.872)),calibration,and decision curve analysis(DCA)demonstrating the highest net benefits across a broad spectrum of threshold probabilities(10%to 90%).The daily dose of propacetamol and the number of medications were found to be independently associated with postoperative liver enzyme abnormalities.This user-friendly nomogram,comprising these two factors,might assist clinicians in assessing the risks of propacetamol-related liver dysfunction following surgery. 展开更多
关键词 Propacetamol NOMOGRAM Liver enzyme abnormalities Postoperative period Drug-induced liver injury
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Genotypic Distribution of the Human Papillomavirus among Women with Cervical Cytological Abnormalities at the Sourô SANOU University Hospital in Bobo-Dioulasso, Burkina Faso
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作者 Pierre Zabré Tani Sagna +13 位作者 Valentin Konsegre Alioun Traore Sylvie Tuina Astrid Sana Abdou Azaque Zouré Wendkuuni Florencia Djigma Isabelle Tiendrebeogo Prosper Bado Tampoubila Edwige Yelemkoure Madeleine Kabre Kadari Cisse Albert T. Yonli Henri Gautier Ouedraogo Jacques Simporé 《American Journal of Molecular Biology》 2025年第1期11-24,共14页
Cervical cancer is the fourth most common cancer worldwide, accounting for 6.8% of new cancer cases and 8.1% of cancer-related deaths. About 85% of these deaths occurred in low- and middle-income countries. The aim of... Cervical cancer is the fourth most common cancer worldwide, accounting for 6.8% of new cancer cases and 8.1% of cancer-related deaths. About 85% of these deaths occurred in low- and middle-income countries. The aim of this study was to assess the frequency and distribution of the human papillomavirus (HPV) genotypes in women showing cytological abnormalities of the cervix at the Sourô SANOU University Hospital (CHUSS) in Bobo-Dioulasso, Burkina Faso. This is a descriptive study of women recruited at the CHUSS. The cervico-uterine smear examination was carried out at the CHUSS Anatomy and Pathology Department for cervical cancer screening. The data were collected from women with atypical cells on their cervico-uterine smear. Cervicovaginal samples were taken from consenting women and HPV genotyping was performed using the HPV Direct FLOW CHIP kit at CERBA. We obtained approval from the ethics committee. The data were analyzed using the SPSS 26 software. The results of the study showed that 67.79% of the participants were aged between 50 and 65, a group that is particularly vulnerable to persistent infection with high-risk oncogenic HPV genotypes. Of the women screened, 40.7% were HPV positive and 29.2% had multiple infections. The most common genotypes were HPV 35, followed by HPV 18, 52, 58 and 66. These data highlight the need for increased surveillance and targeted prevention strategies among this female population. 展开更多
关键词 GENOTYPING Human Papillomavirus Cervical Cytological abnormalities Burkina Faso
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A novel homozygous splicing mutation in AK7 associated with multiple morphological abnormalities of the sperm flagella
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作者 Thomas Greither Holger Herlyn 《Asian Journal of Andrology》 2025年第2期276-276,共1页
Medically assisted reproduction(MAR)techniques are highly dependent on the sperm quantity and quality.Low sperm concentrations can be bypassed at least to some point by the usage of more sophisticated MAR techniques l... Medically assisted reproduction(MAR)techniques are highly dependent on the sperm quantity and quality.Low sperm concentrations can be bypassed at least to some point by the usage of more sophisticated MAR techniques like intracytoplasmic sperm injection(ICSI).Compared to this,disruptions in established indicators of sperm quality like motility or morphology pose greater challenges for the therapy of couple infertility. 展开更多
关键词 intracytoplasmic sperm injection icsi compared AK medically assisted reproduction medically assisted reproduction mar techniques sperm flagella morphological abnormalities therapy couple infertility mar techniques
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Novel bi-allelic variants in DNAH10 lead to multiple morphological abnormalities of sperm flagella and male infertility
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作者 Muhammad Shoaib Muhammad Zubair +10 位作者 Wasim Shah Meftah Uddin Ansar Hussain Ghulam Mustafa Fazal Rahim Huan Zhang Imtiaz Ali Tanveer Abbas Yousaf Raza Sui-Xing Fan Qing-Hua Shi 《Asian Journal of Andrology》 2025年第4期516-523,共8页
Multiple morphological abnormalities of sperm flagella(MMAF)is a severe form of asthenoteratozoospermia,characterized by morphological abnormalities and reduced motility of sperm,causing male infertility.Although appr... Multiple morphological abnormalities of sperm flagella(MMAF)is a severe form of asthenoteratozoospermia,characterized by morphological abnormalities and reduced motility of sperm,causing male infertility.Although approximately 60%of MMAF cases can be explained genetically,the etiology of the remaining cases is unclear.Here,we identified two novel compound heterozygous variants in the gene,dynein axonemal heavy chain 10(DNAH10),in three patients from two unrelated Pakistani families using whole-exome sequencing(WES),including one compound heterozygous mutation(DNAH10:c.9409C>A[p.P3137T];c.12946G>C[p.D4316H])in family 1 and another compound heterozygous mutation(DNAH10:c.8849G>A[p.G2950D];c.11509C>T[p.R3687W])in family 2.All the identified variants are absent or rare in public genome databases and are predicted to have deleterious effects according to multiple bioinformatic tools.Sanger sequencing revealed that these variants follow an autosomal recessive mode of inheritance.Hematoxylin and eosin(H&E)staining revealed MMAF,including sperm head abnormalities,in the patients.In addition,immunofluorescence staining revealed loss of DNAH10 protein signals along sperm flagella.These findings broaden the spectrum of DNAH10 variants and expand understanding of the genetic basis of male infertility associated with the MMAF phenotype. 展开更多
关键词 asthenoteratozoospermia DNAH10 male infertility multiple morphological abnormalities of sperm flagella
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Two-layer model for the early warning and analysis of condensate water quality abnormalities based on autoencoder and expert knowledge
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作者 Xin Wang Shengxu Jin +11 位作者 Chengwei Cai Junran Luo Xiangshuai Tan Yunfei Guo Zhao Li Jinghui Gao Xinlin He Litao Niu Yicun Lin Wei Zhao Guangjin Chen Chun Deng 《Chinese Journal of Chemical Engineering》 2025年第8期107-116,共10页
Thermal power generation systems have stringent requirements for water and steam quality,i.e.,condensate water quality is one of the critical issues.In this paper,we designed a two-layer model based on an autoencoder ... Thermal power generation systems have stringent requirements for water and steam quality,i.e.,condensate water quality is one of the critical issues.In this paper,we designed a two-layer model based on an autoencoder and expert knowledge to achieve the early warning and causal analysis of condensate water quality abnormalities.An early warning model using an autoencoder model is built based on the historical data affecting the condensate water quality.Next,an analytical model of condensate water quality abnormalities was then developed by combining expert knowledge and trend test algorithms.Two different datasets were used to test the proposed model,respectively.The accuracy of the autoencoder model in the short-period test set is 88.83%,which shows that the early warning model can accurately analyze the condensate water quality data and achieve the purpose of early warning.For the long-time period test set,the model can correctly identify each abnormality and simultaneously indicates the cause of the abnormal condensate water quality.The proposed model can correctly identify abnormal working conditions and it is applicable to other thermal power plants. 展开更多
关键词 Early warning DATA-DRIVEN Condensate water quality Abnormality detection ALGORITHM Neural network
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Structural and functional kidney abnormalities in patients with Human immunodeficiency virus infection: A cross-sectional perspective
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作者 Sivaprakash Sundaramoorthy Devarajan Radha +2 位作者 Amalraj Ravi Kotha Sugunakar Reddy Sakthivadivel Varatharajan 《World Journal of Nephrology》 2025年第3期136-143,共8页
BACKGROUND Chronic kidney disease is a progressive disease that evolves towards the deve-lopment of end-stage renal disease.The superimposition of renal impairment on a complex disease,namely human immunodeficiency vi... BACKGROUND Chronic kidney disease is a progressive disease that evolves towards the deve-lopment of end-stage renal disease.The superimposition of renal impairment on a complex disease,namely human immunodeficiency virus(HIV)infection,will raise the burden of comorbidities and,predict worse outcomes in this group of the population.AIM To evaluate the structural and functional defects of kidney in patients with HIV infection.METHODS This cross-sectional study involved 227 patients with HIV infection.Participants were selected by simple random sampling method.Eligible participants included HIV infection-positive adults aged 18 years and above.Exclusion criteria en-compassed individuals with preexisting hypertension,diabetes mellitus,chronic kidney disease,chronic liver disease,and those receiving nephrotoxic drugs.Informed consent was obtained.Data collection involved recording medical histories,conducting clinical examinations,and performing baseline blood investigations and ultrasono-graphy to assess renal function and structural abnormalities.RESULTS The mean age of participants was 41 years.Females constituted 66.5%;78% were on Tenofovir-based regimen.The mean duration of HIV infection was 5 years;mean duration of antiretroviral therapy was 4 years.67.4% had a body mass index over 25.World Health Organization staging of HIV infection revealed that 41.9%were in stage 3,30%in stage 2.35.7% had cluster differentiation 4 counts<200.The mean creatinine was 1 mg/dL and mean urea was 25.1 mg/dL.54.6%had estimated glomerular filtration rate of<60.Enlarged kidneys in 39.2%and increased echogenicity in 82.8%of participants.A decline in estimated glomerular filtration rate and an increase in kidney size was significantly associated with advancing HIV stages.CONCLUSION Both structural and functional kidney abnormalities are common in patients with HIV infection.These abnor-malities increase with disease progression,underscoring the need for regular and consistent renal monitoring. 展开更多
关键词 Chronic kidney disease Estimated glomerular filtration rate Human immunodeficiency virus Structural renal abnormalities
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Risk factors and predictive modeling of early postoperative liver function abnormalities
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作者 Lin Zhong Hao-Yuan Wang +5 位作者 Xiao-Na Li Qiong Ling Ning Hao Xiang-Yu Li Gao-Feng Zhao Min Liao 《World Journal of Hepatology》 2025年第8期233-243,共11页
BACKGROUND Research has shown that several factors can influence postoperative abnormal liver function;however,most studies on this issue have focused specifically on hepatic and cardiac surgeries,leaving limited rese... BACKGROUND Research has shown that several factors can influence postoperative abnormal liver function;however,most studies on this issue have focused specifically on hepatic and cardiac surgeries,leaving limited research on contributing factors in other types of surgeries.AIM To identify the risk factors for early postoperative abnormal liver function in multiple surgery types and construct a risk prediction model.METHODS This retrospective cohort study involved 3720 surgical patients from 5 surgical departments at Guangdong Provincial Hospital of Traditional Chinese Medicine.Patients were divided into abnormal(n=108)and normal(n=3612)groups based on liver function post-surgery.Univariate analysis and LASSO regression screened variables,followed by logistic regression to identify risk factors.A prediction model was constructed based on the variables selected via logistic re-gression.The goodness-of-fit of the model was evaluated using the Hosm-er–Lemeshow test,while discriminatory ability was measured by the area under the receiver operating characteristic curve.Calibration curves were plotted to visualize the consistency between predicted probabilities and observed outcomes.RESULTS The key factors contributing to abnormal liver function after surgery include elevated aspartate aminotransferase and alanine aminotransferase levels and reduced platelet counts pre-surgery,as well as the sevoflurane use during the procedure,among others.CONCLUSION The above factors collectively represent notable risk factors for postoperative liver function injury,and the prediction model developed based on these factors demonstrates strong predictive efficacy. 展开更多
关键词 Perioperative period Abnormal liver function Risk factor Univariate analysis Risk prediction model
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Ambulatory Blood Pressure Characteristics and Risk Factors for Circadian Thythm Abnormalities in Elderly Patients with Hypertension
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作者 Yaqian Huang 《Journal of Clinical and Nursing Research》 2025年第2期153-159,共7页
Objective:To analyze the characteristics of ambulatory blood pressure in elderly patients with hypertension and find out the risk factors of abnormal circadian rhythm.Methods:According to the circadian rhythm of patie... Objective:To analyze the characteristics of ambulatory blood pressure in elderly patients with hypertension and find out the risk factors of abnormal circadian rhythm.Methods:According to the circadian rhythm of patients'blood pressure,they were divided into Group A,Group B and Group C,and all the data of hypertension patients in this study were collected,including age,gender,BMI,smoking,drinking,basic diseases(diabetes,cerebrovascular disease,hyperlipidemia,etc.),fasting blood glucose,ambulatory blood pressure(24-hour mean systolic pressure,24-hour mean diastolic pressure,daytime mean systolic pressure and daytime mean diastolic pressure).Results:There were significant differences in mean systolic blood pressure and mean diastolic blood pressure at night among Group A,Group B and Group C(P<0.05).Age,hyperlipidemia and fasting blood glucose were risk factors for circadian rhythm abnormality(P<0.05),and 24-hour urinary sodium was a protective factor for circadian rhythm abnormality(P<0.05).Conclusion:Age,hyperlipidemia and fasting blood glucose are risk factors for circadian rhythm abnormality(P<0.05),and 24-hour urinary sodium is a protective factor for circadian rhythm abnormality(P<0.05). 展开更多
关键词 Elderly patients HYPERTENSION Ambulatory blood pressure Abnormal circadian rhythm
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Ambulatory Blood Pressure Characteristics and Risk Factors for Circadian Rhythm Abnormalities in Elderly Patients with Hypertension
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作者 Yaqian Huang 《Journal of Clinical and Nursing Research》 2025年第3期154-160,共7页
Objective:To analyze the characteristics of ambulatory blood pressure in elderly patients with hypertension and find out the risk factors of abnormal circadian rhythm.Methods:According to the circadian rhythm of patie... Objective:To analyze the characteristics of ambulatory blood pressure in elderly patients with hypertension and find out the risk factors of abnormal circadian rhythm.Methods:According to the circadian rhythm of patients’blood pressure,they were divided into group A,group B,and group C,and all the data of hypertension patients in this study were collected,including age,gender,BMI,smoking,drinking,basic diseases(diabetes,cerebrovascular disease,hyperlipidemia,etc.),fasting blood glucose,ambulatory blood pressure(24-hour mean systolic pressure,24-hour mean diastolic pressure,daytime mean systolic pressure and daytime mean diastolic pressure).Results:There were significant differences in mean systolic blood pressure and mean diastolic blood pressure at night among group A,group B and group C(P<0.05).Age,hyperlipidemia and fasting blood glucose were risk factors for circadian rhythm abnormality(P<0.05),and 24-hour urinary sodium was a protective factor for circadian rhythm abnormality(P<0.05).Conclusion:Age,hyperlipidemia and fasting blood glucose are risk factors for circadian rhythm abnormality(P<0.05),and 24-hour urinary sodium is a protective factor for circadian rhythm abnormality(P<0.05). 展开更多
关键词 Elderly patients HYPERTENSION Ambulatory blood pressure Abnormal circadian rhythm
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伴-7/7q-染色体异常的儿童急性髓系白血病临床特征及预后分析
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作者 郑方圆 王淼 +4 位作者 丁明明 陆爱东 贾月萍 曾慧敏 张乐萍 《中国当代儿科杂志》 北大核心 2026年第1期84-89,共6页
目的 分析伴单体7(-7)和7号染色体长臂缺失(7q-)的儿童急性髓系白血病(acute myeloid leukemia, AML)的临床特征及预后相关因素。方法 回顾性分析2010年1月—2024年12月北京大学人民医院儿科收治的伴-7/7q-AML儿童的临床资料、治疗及预... 目的 分析伴单体7(-7)和7号染色体长臂缺失(7q-)的儿童急性髓系白血病(acute myeloid leukemia, AML)的临床特征及预后相关因素。方法 回顾性分析2010年1月—2024年12月北京大学人民医院儿科收治的伴-7/7q-AML儿童的临床资料、治疗及预后。结果 共收治染色体核型分析结果完整的AML儿童869例,其中伴-7/7q-染色体异常32例(3.7%);男20例,女12例;中位诊断年龄6岁。伴孤立性-7染色体异常6例(19%),伴孤立性7q-染色体异常2例(6%),伴额外染色体异常24例(75%)。诱导化疗后获得完全缓解16例(50%)。随访时死亡15例(47%),存活17例(53%),3年无病生存率为(54.1±0.1)%,3年总生存率为(52.6±0.1)%,行造血干细胞移植(hematopoietic stem cell transplantation, HSCT)为3年无病生存率(HR=0.17,95%CI:0.04~0.62,P=0.008)及总生存率(HR=0.16,95%CI:0.04~0.59,P=0.006)的独立影响因素,行HSCT治疗的儿童可获得更好的预后。结论 -7/7q-染色体在儿童AML中的发生率为3.7%,易合并额外染色体异常,诱导化疗后完全缓解率低,行HSCT治疗有助于改善预后,提高生存率。 展开更多
关键词 急性髓系白血病 7号染色体异常 儿童
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基于多通道耦合的时空增强异常行为检测
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作者 章东平 潘鑫 +2 位作者 马道滨 米红妹 林丽莉 《北京航空航天大学学报》 北大核心 2026年第1期73-79,共7页
针对现有异常行为检测模型在特征提取方面存在局限、对动态时序特征建模不足的问题,提出一种基于多通道耦合的时空增强异常行为检测方法。该方法以SlowFast网络为基础,在慢路径中引入多通道耦合的空间增强模块以强化静态特征建模,在快... 针对现有异常行为检测模型在特征提取方面存在局限、对动态时序特征建模不足的问题,提出一种基于多通道耦合的时空增强异常行为检测方法。该方法以SlowFast网络为基础,在慢路径中引入多通道耦合的空间增强模块以强化静态特征建模,在快路径中引入多通道耦合的时间增强模块以提升动态时序特征的判别能力。在Violent Flow、Hockey Fight和Real-life Violence Situations 3个基准数据集上的实验表明,所提方法的预测准确率分别达到95.3%、97.3%和94%,优于现有主流方法。结果验证了所提方法在异常行为检测任务中具有更强的特征表达能力和泛化性能。 展开更多
关键词 SlowFast 时空增强 异常行为检测 多通道耦合 注意力机制
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琼北地区活断层土壤氡地球化学特征
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作者 李盛 周雯 +5 位作者 张慧 王惠琳 黄章荣 江蕾 解晓静 郭昱琴 《地震科学进展》 2026年第1期16-23,共8页
本文收集整理了琼北地区2020—2022年7条3期活断层土壤氡测线的观测数据资料,统计了各测线土壤逸出氡浓度的均值、异常阈值和超阈值的测点数,分析了3年期间各测线的土壤逸出氡浓度变化特征。结果表明:2020—2022年7条测线土壤逸出氡浓... 本文收集整理了琼北地区2020—2022年7条3期活断层土壤氡测线的观测数据资料,统计了各测线土壤逸出氡浓度的均值、异常阈值和超阈值的测点数,分析了3年期间各测线的土壤逸出氡浓度变化特征。结果表明:2020—2022年7条测线土壤逸出氡浓度变化均较为符合跨正断活断层的土壤氡浓度的变化特征;除2020年金康路测线无测点超阈值外,其余测线每年的观测值均存在超阈值的现象,但所超阈值线的幅度均较小,且测线超阈值的测点数也较少;7条测线所在3条活断层的活动危险性较低。本文首次建立了琼北地区活断层周边土壤氡浓度的时空数据库,明确了活断层附近土壤氡背景值范围是8500~33000 Bq/m^(3),为后续地震前兆识别提供基线参考。 展开更多
关键词 活断层 土壤逸出氡 测线 阈值 异常信号
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大语言模型赋能区块链服务安全研究综述:现状、挑战与机遇(特邀)
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作者 林丹 卢顺峰 +5 位作者 刘姿妍 张博昭 何龙 蒋子规 吴嘉婧 郑子彬 《计算机工程》 北大核心 2026年第1期1-21,共21页
区块链已逐渐发展成支撑数字经济的重要基础设施,但其匿名性、跨链互操作性、多方参与等特征,导致诈骗、洗钱与攻击等安全事件频发,严重威胁生态系统的稳定与合规。尽管现有分析工具与方法在区块链服务安全领域取得了一定进展,但仍普遍... 区块链已逐渐发展成支撑数字经济的重要基础设施,但其匿名性、跨链互操作性、多方参与等特征,导致诈骗、洗钱与攻击等安全事件频发,严重威胁生态系统的稳定与合规。尽管现有分析工具与方法在区块链服务安全领域取得了一定进展,但仍普遍存在泛化能力不足、推理能力有限、难以适应复杂业务逻辑演化等问题。与此同时,生成式大语言模型(LLM)的快速发展正在深刻重塑服务计算范式,其在自然语言理解、知识推理与多模态融合等方面的优势,为区块链服务安全研究提供了新的思路与技术路径。系统梳理LLM在事前智能合约审计、事中异常行为检测、事后多链行为关联任务中的应用进展,归纳其优势与局限,总结LLM赋能区块链服务安全的典型实践。最后,展望LLM赋能区块链服务安全面临的开放科学问题与未来研究方向,为构建可信、可解释、高效的区块链服务计算与治理体系提供参考。 展开更多
关键词 区块链 大语言模型 服务安全 智能合约审计 异常行为检测 多链行为关联
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首次问询和重复问询的监管效果及其差异——基于年报异常语调的视角
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作者 苏云鹏 钟时佳 刘佳 《现代金融研究》 北大核心 2026年第1期73-87,112,共16页
本文基于2014-2023年沪深A股上市公司及对应年报问询函数据,研究证券交易所的问询、首次问询和重复问询对上市公司年报定性披露的监管有效性及其差异性。研究表明:(1)上市公司收函概率随其年报中异常语调的提高而上升,且证券交易所对重... 本文基于2014-2023年沪深A股上市公司及对应年报问询函数据,研究证券交易所的问询、首次问询和重复问询对上市公司年报定性披露的监管有效性及其差异性。研究表明:(1)上市公司收函概率随其年报中异常语调的提高而上升,且证券交易所对重复收函公司的监管阈值显著降低;(2)问询监管促使收函公司,尤其是重复收函公司,在未来降低异常语调披露水平;(3)问询监管对未收函公司产生同业溢出效应,其中同业首次收函的溢出效应更加显著;(4)两权分离度低、行业集中度高的企业对于问询监管的敏感性更高。 展开更多
关键词 问询函 问询监管 异常语调 首次问询 重复问询
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准噶尔盆地永进地区侏罗系齐古组天然裂缝发育特征及主控因素
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作者 孟阳 曹小朋 +5 位作者 赵浩 杨明林 李志鹏 田振磊 乌洪翠 蒋越 《岩性油气藏》 北大核心 2026年第1期13-25,共13页
天然裂缝的发育程度是影响准噶尔盆地永进地区侏罗系齐古组单井产能的关键因素。结合野外露头、岩心、薄片、测井和试验等资料,对齐古组致密砂岩天然裂缝成因类型、发育特征和主控因素进行了详细研究,并预测了其有利发育区。研究结果表... 天然裂缝的发育程度是影响准噶尔盆地永进地区侏罗系齐古组单井产能的关键因素。结合野外露头、岩心、薄片、测井和试验等资料,对齐古组致密砂岩天然裂缝成因类型、发育特征和主控因素进行了详细研究,并预测了其有利发育区。研究结果表明:(1)准噶尔盆地永进地区侏罗系齐古组致密砂岩储层天然裂缝成因类型多样,主要包括成岩裂缝、少量构造裂缝和异常超压裂缝,其中成岩裂缝以层理缝为主,发育少量粒缘缝和粒内缝。天然裂缝是深层优质储集层形成的重要因素之一。(2)研究区齐古组裂缝的发育主要受沉积作用、构造应力和超压的控制,沉积微相通过控制岩性、矿物成分、沉积构造等因素来控制裂缝发育程度,分流砂坝中上部的中细砂岩为裂缝发育的有利场所;喜山期近南北向构造挤压应力是研究区构造裂缝和层理缝开启的重要动力,断层1 km范围内裂缝较发育;异常超压对超压缝和层理缝的开启以及裂缝的保存具有重要作用,研究区北部异常超压发育程度高,储层裂缝较发育。(3)研究区齐古组有效天然裂缝主要发育在压力系数大于1.6、断层北部的层状分流砂坝区。 展开更多
关键词 致密砂岩 天然裂缝 成岩缝 构造缝 异常超压缝 齐古组 侏罗系 永进地区 准噶尔盆地
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