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Association of triglyceride-glucose index with long-term prognosis in advanced hepatocellular carcinoma patients receiving immunotherapy and targeted therapy
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作者 Geng-Chen Li Zhi-Yuan Yao +1 位作者 Hong-Sen Mao Zheng-Xiang Han 《World Journal of Gastroenterology》 2025年第30期84-100,共17页
BACKGROUND Primary liver cancer,particularly hepatocellular carcinoma(HCC),ranks as the sixth most prevalent cancer globally and the third major cause of cancerassociated mortality.Despite the available immunotherapie... BACKGROUND Primary liver cancer,particularly hepatocellular carcinoma(HCC),ranks as the sixth most prevalent cancer globally and the third major cause of cancerassociated mortality.Despite the available immunotherapies and combined immunotherapy and targeted therapy,the prognosis for many patients remains dismal.Accurately identifying the appropriate patient cohorts is crucial for improving treatment outcomes.AIM To investigate the prognostic value of the triglyceride-glucose(TyG)index-a novel,accessible marker of insulin resistance-in predicting therapeutic outcomes among patients with hepatitis B virus(HBV)-related HCC treated with camrelizumab and lenvatinib.METHODS In this study,we conducted a retrospective review of 278 patients diagnosed with stage B/C HBV-related HCC who underwent combination therapy.Based on their TyG index,patients were categorized into high and low TyG index groups.A nomogram prediction model was developed based on independent prognostic factors for overall survival(OS)and validated using the C-index and calibration curves.RESULTS Of the 278 patients enrolled in the study,144 were assigned to the high TyG index group,while the remaining 134 were classified into the low index group.Importantly,patients with a low TyG index demonstrated a significantly prolonged median progression-free survival and OS relative to those with a high index.Additionally,the objective response rate and disease control rate were 22.39%and 64.18%in the low TyG index group,whereas they were 12.50%and 51.39%in the high TyG index group,respectively.Moreover,the incidence of hypertension was higher in the high TyG index group than in the low TyG index group.The incidence of other adverse effects did not differ significantly between the groups.Multivariate regression analysis identified independent prognostic factors for OS,including the Barcelona Clinic Liver Cancer stage,alpha-fetoprotein level,Eastern Cooperative Oncology Group score,distant metastasis,and the TyG index.The risk ratio of the TyG index was 0.48(95%confidence interval:0.31-0.72,P<0.001).CONCLUSION The TyG index is a reliable long-term predictor of response to combined immunotherapy and targeted therapy in patients with HBV-related HCC.Patients with a low TyG index tend to experience better clinical outcomes. 展开更多
关键词 Hepatocellular carcinoma triglyceride-glucose index Camrelizumab Lenvatinib EffICACY Safety
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The prognostic value of triglyceride-glucose index in pre-dicting coronary artery disease and long term clinical out-come
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作者 XU Hai-jia ZOU Yu-fang QU Wei 《South China Journal of Cardiology》 2025年第1期21-28,共8页
Background Insulin resistance(IR)is linked to coronary artery disease(CAD)and cardiovascular events.The triglyceride-glucose(TyG)index is a simple marker for IR,but its role in predicting CAD severity and long-term cl... Background Insulin resistance(IR)is linked to coronary artery disease(CAD)and cardiovascular events.The triglyceride-glucose(TyG)index is a simple marker for IR,but its role in predicting CAD severity and long-term clinical outcomes in people without previous heart disease is unclear.Methods This retrospective study included 619 patients who underwent elective coronary angiography for CAD evaluation.The TyG index was calculated us-ing the formula Ln[fasting triglycerides(mg/dL)×fasting blood glucose(mg/dL)/2].Clinical characteristics,labo-ratory results,and medication use were collected,and the severity of CAD was assessed by coronary angiography.During a median follow-up period of 30 months,the incidence of long-term major adverse cardiovascular events(MACE),including acute myocardial infarction(AMI),revascularization,stroke,and all-cause death,was record-ed.The association between the TyG index and the incidence of MACE was analyzed using Cox regression models.Results The TyG index was notably higher in the CAD group[10.1(9.8-10.5)vs.8.9(8.5-9.1),P<0.001].The TyG index was significantly associated with CAD severity,with higher TyG levels corresponding to greater steno-sis in the coronary arteries.Higher TyG index levels were also linked to an increased incidence of MACE,particu-larly AMI.In multivariate analysis,the TyG index was identified as an independent predictor of MACE(HR:2.117,95%CI:1.308-3.425,P=0.002).Kaplan-Meier curves showed that individuals in the high TyG index tertile had sig-nificantly higher MACEs rate compared to those in the low and medium TyG groups(P<0.0001).Conclusions The TyG index is a significant predictor of CAD severity and MACE in individuals without prior heart disease.This study highlighted the prognostic value of the TyG index in cardiovascular risk assessment,suggesting that it might be a valuable tool for identifying individuals at higher risk of severe CAD and adverse cardiovascular outcomes. 展开更多
关键词 triglyceride-glucose index Coronary artery disease Major adverse cardiovascular events
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The triglyceride-glucose index shows promise as a novel prognostic marker for advanced hepatocellular carcinoma
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作者 Tao Xu Xu Qi +1 位作者 Fei-Yu Zhao Nian-Song Qian 《World Journal of Gastroenterology》 2026年第2期167-169,共3页
This commentary critically appraises the study by Li et al which pioneered the exploration of the triglyceride-glucose(TyG)index as a prognostic marker in hepatitis B virus-related advanced hepatocellular carcinoma pa... This commentary critically appraises the study by Li et al which pioneered the exploration of the triglyceride-glucose(TyG)index as a prognostic marker in hepatitis B virus-related advanced hepatocellular carcinoma patients undergoing combined camrelizumab and lenvatinib therapy.While we acknowledge the study’s clinical relevance in proposing an easily accessible metabolic biomarker,we delve into the mechanistic plausibility linking insulin resistance to immunotherapy response and angiogenic inhibition.We further critically examine the methodological limitations,including the retrospective design,the populationspecific TyG cut-off value,and unaddressed metabolic confounders.We highlight the imperative for future research to validate its utility across diverse etiologies and treatment settings,and to unravel the underlying immunometabolic pathways. 展开更多
关键词 triglyceride-glucose index Prognostic marker Advanced hepatocellular carcinoma Camrelizumab Lenvatinib
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Co-exposure of PFASs,PAHs and metals,immune inflammation and triglyceride-glucose index:Exploring associations and mediation effects in children
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作者 Miao Liu Biao Zhang +11 位作者 Yuanyuan Zhang Jie Wang Lei Zhao Wenting Guo Meng Li Huihua Yang Xuefeng Lai Liangle Yang Xiao Meng Cuijuan Wang Zhihu Zhang Xiaomin Zhang 《Journal of Environmental Sciences》 2026年第2期384-393,共10页
The associations of co-exposure to per-and polyfluoroalkyl substances(PFAS),polycyclic aromatic hydrocarbons(PAHs),and metals with children’s glycometabolism and the underlying mechanism of immune inflammation are la... The associations of co-exposure to per-and polyfluoroalkyl substances(PFAS),polycyclic aromatic hydrocarbons(PAHs),and metals with children’s glycometabolism and the underlying mechanism of immune inflammation are largely unclear.We conducted a longitudinal panel study to explore the effects of individual and mixture of 27 contaminants on an emerging surrogate indicator of insulin resistance,triglyceride-glucose index(TyG),and the mediation of immunoglobulins and cytokines in children aged 4–6 years and 11–13 years.The results showed robust associations of perfluorooctanoic acid(PFOA),perfluorononanoic acid(PFNA),perfluoroundecanoic acid(PFUnDA),and arsenic(As)with elevated TyG.The interaction of PFNA with PFOA was significant,showing a synergistic effect on TyG.And combined association of each pair of PFOA,PFNA,and As with TyG were enhanced.Meanwhile,the effect of contaminants mixture on TyG was significant for polyfluoroalkyl substances(PFAS)mixture,of which 6:2 Chlorinated polyfluorinated ether sulfonates(Cl-PFESA),PFNA,and PFUnDA weighted more than others.Notably,contaminants were related to immune globulins and cytokines,of which chemokine ligand(CCL)4,interleukin(IL)-1β,IL-9,and tumor necrosis factor(TNF)-α significantly mediated associations of PFOA,PFNA,and PFUnDA with TyG.Accordingly,PFAS and metals were individually and jointly associated with TyG elevation,with 6:2 Cl-PFESA,PFNA,and PFUnDA contributing the most,and CCL4,IL-1β,IL-9,and TNF-α might be the underlying mediators in children. 展开更多
关键词 Priority-controlled contaminants mixture triglyceride-glucose index Mediation of immune inflammation Panel study
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Predictive value of triglyceride-glucose index and sex hormone-binding globulin in diabetic retinopathy
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作者 Min Zhang Xin-Rui Zhou +3 位作者 Wei-Guo Ma Xiao-Hong Yin Ya Li Rong Li 《International Journal of Ophthalmology(English edition)》 2026年第5期921-926,共6页
AIM:To investigate the levels of the triglyceride-glucose(TyG)index and sex hormone-binding globulin(SHBG)in patients with type 2 diabetes mellitus(T2DM)with diabetic retinopathy(DR),and to explore their correlations ... AIM:To investigate the levels of the triglyceride-glucose(TyG)index and sex hormone-binding globulin(SHBG)in patients with type 2 diabetes mellitus(T2DM)with diabetic retinopathy(DR),and to explore their correlations with biochemical parameters and the homeostasis model assessment of insulin resistance(HOMA-IR)in DR patients.METHODS:Patients with T2DM and healthy individuals were enrolled.Age and body mass index(BMI)of the participants were collected,TyG of the subjects was calculated using the formula,SHBG level of the subjects was detected,and blood biochemical indexes were measured at the same time.The changes of each index among the groups were statistically analyzed,and the relationship between TyG,SHBG,DR and each index was analyzed.RESULTS:A total of 150 patients with T2DM and 64 healthy individuals as normal controls(NC,28 males and 36 females,mean age 54.49±10.10y)were enrolled following ophthalmic evaluation.Patients were categorized into non-DR group(42 males and 36 females,mean age 56.68±8.02y)and DR group(35 males and 37 females,mean age,53.83±11.10y).TyG levels were significantly elevated in both non-DR(7.25±0.62)and DR groups(8.02±0.82)compared to controls(6.85±0.48),with the DR group demonstrating higher TyG values than the non-DR group(P<0.05).The level of SHBG(nmol/L)in DR group(25.05±14.06)was lower than that in control group(41.90±22.6)and non-DR group(36.27±20.00;P<0.05).TyG exhibited significant inverse correlations with SHBG(r=-0.455)and high density lipoprotein(HDL;r=-0.430)levels(P<0.05).It was positively correlated with BMI,fasting blood glucose(FBG),2h postprandial blood glucose(PBG),fasting C-peptide(FCP),glycated hemoglobin A1c(HbA1c),HOMA-IR,total cholesterol(TC)and triglycerides(TG)(r=0.406,0.768,0.386,0.393,0.475,0.250,0.242,0.888,respectively,P<0.05).SHBG was negatively correlated with BMI,FBG,FCP,HbA1c and TyG(r=-0.440,-0.304,-0.407,-0.209,-0.455,respectively,P<0.05),and positively correlated with age,TG and HDL(r=0.238,0.034,0.227,respectively,P<0.05).Further multiple regression analysis showed that SHBG was negatively correlated with TyG(P=0.006).CONCLUSION:Elevated TyG index,reduces SHBG levels,and their negative correlation in the DR group suggest potential roles of TyG and SHBG in the pathogenesis and progression of DR.Combined assessment of SHBG and TyG may provide valuable insights for DR prediction and diagnosis. 展开更多
关键词 diabetic retinopathy triglyceride-glucose index sex hormone binding globulin glycated hemoglobin insulin resistance index
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Triglyceride-glucose index is associated with in-hospital pulmonary infection and bleeding in patients with ST-seg-ment elevation myocardial infarction undergoing percuta-neous coronary intervention
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作者 ZENG Lin JIN Wei-zhen +9 位作者 ZHEN Ci-en YANG Man LI Yu PENG Shi-min XIE Li-xin DUAN Chong-yang LIU Yuan-hui SUN Zhong-chan ZHUANG Yan HE Peng-cheng 《South China Journal of Cardiology》 2025年第1期9-20,35,共13页
Background The triglyceride-glucose(TyG)index has been widely studied in metabolic and cardiovascular diseases.ST-segment elevation myocardial infarction(STEMI)patients undergoing percutaneous coronary inter-vention(P... Background The triglyceride-glucose(TyG)index has been widely studied in metabolic and cardiovascular diseases.ST-segment elevation myocardial infarction(STEMI)patients undergoing percutaneous coronary inter-vention(PCI)are at increased risk of pulmonary infection due to their stressful conditions.While previous studies have confirmed the predictive role of TyG index in the prognosis of STEMI patients,its potential association with pulmonary infection remains unclear.This study was to explored the relationship between the TyG index and pul-monary infection in STEMI patients PCI.Methods STEMI patients who underwent PCI were enrolled and strati-fied into three tertiles based on the TyG index measured after receiving PCI.Primary outcome was pulmonary infec-tion during hospitalization.Secondary outcomes were in-hospital bleeding,all-cause mortality and major adverse cardiac events(MACE)as well as MACE during follow-up.Logistic regression and Cox proportional hazard re-gression were mainly used to estimate outcomes.Results 3652 patients were enrolled in this study.In multivari-ate logistic regression,the TyG index was associated with in-hospital pulmonary infection[adjusted odds ratio(aOR):1.29,95%CI:1.05-1.58,P=0.014],mortality(aOR:2.27,95%CI:1.64-3.15,P<0.001),MACE(aOR:1.81,95%CI:1.39-2.37,P<0.001),and any bleeding(aOR:1.22,95%CI:1.04-1.43,P=0.013).The median follow-up was 1.70 years.After adjusting for potential confounders,the TyG index was positively related to long-term MACE(aHR:1.26,95%CI:1.06-1.49,P=0.009).Conclusions A high TyG index was associated with in-hospital pulmo-nary infection,bleeding,mortality and MACE in patients with STEMI undergoing PCI.Additionally,it is also asso-ciated with long-term MACE. 展开更多
关键词 Pulmonary infection Hemorrhage triglyceride-glucose index Acute myocardial infarction
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Triglyceride-glucose index as a prognostic indicator in advanced gastric cancer:Insights and future research
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作者 Cheng-Fei Zhao Xiao-Ling Liu +1 位作者 Ning-Bi Wu Zhi-Feng Xu 《World Journal of Gastroenterology》 2025年第17期1-7,共7页
Gastric cancer(GC),the fifth most common malignancy worldwide,poses a substantial challenge in clinical oncology,particularly in its advanced stages.Despite advancements in immunotherapy,patient prognosis remains poor... Gastric cancer(GC),the fifth most common malignancy worldwide,poses a substantial challenge in clinical oncology,particularly in its advanced stages.Despite advancements in immunotherapy,patient prognosis remains poor,underscoring the need for reliable prognostic tools to refine treatment strategies.A study by Yao et al explores the role of the triglyceride-glucose(TyG)index as a prognostic marker for advanced GC patients receiving immunotherapy combined with chemotherapy.The results of the study demonstrate that the TyG index correlates with improved survival outcomes,including better progression-free survival and overall survival.This editorial critically evaluates the significance of these findings,discusses their implications for future research,and highlights innovative directions that could drive further breakthroughs in the application of the TyG index to cancer therapy.This editorial also highlights the potential of TyG in advancing precision oncology and advocates for global validation and mechanistic investigations to further solidify its clinical utility.Future research should focus on validating the TyG index across various malignancies,exploring its potential to influence immunotherapy through metabolic interventions,and developing multi-biomarker models that integrate TyG with immune and genomic profiles. 展开更多
关键词 Advanced gastric cancer triglyceride-glucose index Prognostic indicator IMMUNOTHERAPY Insulin resistance
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Triglyceride-glucose index in predicting gastric cancer prognosis:A need for caution
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作者 Yi-Fan Zhao Jia-Hui Lv +6 位作者 De-Fang Chen Zhi-Hui Wang Yun Teng Michael Ntim Min Xia Shao Li Bin Wang 《World Journal of Gastroenterology》 2025年第18期126-133,共8页
Gastric cancer(GC)remains one of the leading causes of cancer-related mortality worldwide.Accurate prognostic assessment,which is essential for enhancing overall survival(OS),currently depends on pathologic and clinic... Gastric cancer(GC)remains one of the leading causes of cancer-related mortality worldwide.Accurate prognostic assessment,which is essential for enhancing overall survival(OS),currently depends on pathologic and clinical staging.This underscores the urgent need for reliable and real-time prognostic biomarkers.The triglyceride-glucose(TyG)index,a readily available marker of insulin resistance,has recently emerged as a potential prognostic tool in GC.Numerous studies have consistently shown a significant association between elevated TyG levels and inferior OS as well as progression-free survival.Despite these promising findings,several challenges must be addressed before the TyG index can be widely adopted in clinical practice.Firstly,the TyG index lacks cancer-specificity,reflecting broader metabolic disturbances commonly observed in conditions such as obesity,diabetes,and cardiovascular disease.This lack of specificity complicates its interpretation in oncological settings.Additionally,the cutoff values for TyG index vary across studies,hindering the establishment of a standardized threshold for clinical application.While the TyG index provides valuable insights into a patient's metabolic health,its limited cancer specificity necessitates cautious use when evaluating the prognosis of GC treatment. 展开更多
关键词 triglyceride-glucose index Gastric cancer Prognostic biomarker Glycolipid metabolism Overall survival Progression-free survival
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Prognostic value of the triglyceride-glucose index in advanced gastric cancer:A call for further exploration
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作者 Hong-Jie Meng Yi Mao +1 位作者 De-Qing Zhao Sheng-Guang Shi 《World Journal of Gastroenterology》 2025年第15期144-148,共5页
Gastric cancer(GC)remains a leading cause of cancer-related mortality worldwide,necessitating the identification of reliable prognostic indicators to enhance treatment outcomes.Recent research has highlighted the trig... Gastric cancer(GC)remains a leading cause of cancer-related mortality worldwide,necessitating the identification of reliable prognostic indicators to enhance treatment outcomes.Recent research has highlighted the triglyceride-glucose(TyG)index as a potential surrogate marker for insulin resistance,which may significantly influence the prognosis of patients undergoing immunotherapy combined with chemotherapy.In this context,the study by Yao et al demonstrates that a high TyG index correlates with improved overall survival and progressionfree survival in advanced GC patients receiving sintilimab and chemotherapy.Specifically,patients in the high TyG group had a significantly longer median progression-free survival of 9.8 months[95%confidence interval(CI):9.2-10.9]compared to 8.0 months(95%CI:7.5-8.5)in the low TyG group(hazard ratio=0.58,95%CI:0.43-0.79,P<0.001).Similarly,the median overall survival was significantly longer in the high TyG group at 23.1 months(95%CI:21.2-NA)vs 16.5 months(95%CI:13.9-18.3)in the low TyG group(hazard ratio=0.30,95%CI:0.21-0.42,P<0.001).These findings underscore the strong prognostic potential of the TyG index in guiding treatment strategies for advanced GC.These findings underscore the need for further investigation into the TyG index’s role as a prognostic tool and its underlying mechanisms in influencing treatment efficacy.We advocate for additional multicenter studies to validate these results and explore the TyG index’s applicability across diverse patient populations,ultimately aiming to refine treatment strategies and improve patient outcomes in advanced GC. 展开更多
关键词 Advanced gastric cancer CHEMOTHERAPY Insulin resistance Prognostic marker triglyceride-glucose index Tumor microenvironment
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Predictive value of atherogenic index of plasma index,triglyceride-glucose index and cerebral small vascular disease imaging markers on early neurological response after intravenous thrombolysis in patients with acute ischemic stroke
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作者 Xiao Yang Yuanyuan Meng +2 位作者 Jingyi Yang Shuhan Wang Ligong Zhang 《Journal of Translational Neuroscience》 2025年第4期1-10,共10页
Objectives:To explore the predictive value of the atherogenic index of plasma(AIP),triglyceride-glucose(TyG)index,and cerebral small vascular disease(CSVD)imaging load score regarding the early prognosis of patients w... Objectives:To explore the predictive value of the atherogenic index of plasma(AIP),triglyceride-glucose(TyG)index,and cerebral small vascular disease(CSVD)imaging load score regarding the early prognosis of patients with acute ischemic stroke(AIS)after intravenous thrombolysis.Methods:A total of 379 inpatients(diagnosed with AIS at the Shengli Oilfield Central Hospital and treated with intravenous thrombolysis from January 2022 to December 2023)were retrospectively analyzed.Relevant data were collected,and the CSVD imaging load score was evaluated.The patients were classified into the good prognosis group(≥18%)and the poor prognosis group(<18%)based on the early neurological improvement rate 14 d after thrombolysis.An investigation into the independent risk factors influencing the early prognostic outcomes in patients suffering from AIS was conducted utilizing binary Logistic regression analysis.The efficacy of early prognosis prediction in patients undergoing intravenous thrombolysis was assessed through receiver operating characteristic(ROC)curve analysis.Results:Systolic blood pressure,AIP,TyG index,neutrophil to lymphocyte ratio(NLR),cerebral microbleeds(CMB),enlarged perivascular spaces(EPVS)and a CSVD imaging load score of 2 points or higher served as independentrisk factors influencing the early prognosis in AIS patients undergoing thrombolysis.The ROC curve analysis revealed that the area under the curve(AUC)for the CSVD imaging load score was 0.821,with a sensitivity of 80.4%and a specificity of 74%.The AUC of the AIP was 0.951,with a sensitivity of 89.2%and a specificity of 91.7%.The AUC of the TyG index was 0.918,with a sensitivity of 93.1%and a specificity of 82.7%.Conclusions:The AIP,TyG index,and CSVD imaging load score serve as efficacious indicators in assessing the premature prognostication of AIS patients who underwent subsequently to intravenous thrombolytic therapy. 展开更多
关键词 acute ischemic stroke early prognosis atherogenic index of plasma triglyceride-glucose index small vascular disease imaging burden
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Triglyceride-glucose related indices as predictors for major adverse cardiovascular events and overall mortality in type-2 diabetes mellitus patients
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作者 Mao-Jun Liu Jun-Yu Pei +5 位作者 Cheng Zeng Ying Xing Yi-Feng Zhang Pei-Qi Tang Si-Min Deng Xin-Qun Hu 《World Journal of Diabetes》 2025年第3期89-104,共16页
BACKGROUND Recent studies have indicated that triglyceride glucose(TyG)-waist height ratio(WHtR)and TyG-waist circumference(TyG-WC)are effective indicators for evaluating insulin resistance.However,research on the ass... BACKGROUND Recent studies have indicated that triglyceride glucose(TyG)-waist height ratio(WHtR)and TyG-waist circumference(TyG-WC)are effective indicators for evaluating insulin resistance.However,research on the association in TyG-WHtR,TyG-WC,and the risk and prognosis of major adverse cardiovascular events(MACEs)in type 2 diabetes mellitus(T2DM)cases are limited.AIM To clarify the relation in TyG-WHtR,TyG-WC,and the risk of MACEs and overall mortality in T2DM patients.METHODS Information for this investigation was obtained from Action to Control Cardiovascular Risk in Diabetes(ACCORD)/ACCORD Follow-On(ACCORDION)study database.The Cox regression model was applied to assess the relation among TyG-WHtR,TyG-WC and future MACEs risk and overall mortality in T2DM cases.The RCS analysis was utilized to explore the nonlinear correlation.Subgroup and interaction analyses were conducted to prove the robustness.The receiver operating characteristic curves were applied to analysis the additional predicting value of TyG-WHtR and TyG-WC.RESULTS After full adjustment for confounding variables,the highest baseline TyG-WHtR cohort respectively exhibited a 1.353-fold and 1.420-fold higher risk for MACEs and overall mortality,than the lowest quartile group.Similarly,the highest baseline TyG-WC cohort showed a 1.314-fold and 1.480-fold higher risk for MACEs and overall mortality,respectively.Each 1 SD increase in TyG-WHtR was significantly related to an 11.7%increase in MACEs and a 14.9%enhance in overall mortality.Each 1 SD increase in TyG-WC corresponded to an 11.5%in MACEs and a 16.6%increase in overall mortality.Including these two indexes in conventional models significantly improved the predictive power for MACEs and overall mortality.CONCLUSION TyG-WHtR and TyG-WC were promising predictors of MACEs and overall mortality risk in T2DM cases. 展开更多
关键词 triglyceride-glucose related indices Major adverse cardiovascular events Overall mortality Type 2 diabetes mellitus Action to control cardiovascular risk in diabetes
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甜菜夜蛾短神经肽F基因调控取食、能量代谢及饥饿耐受性的功能分析
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作者 滕海媛 顾浩天 +3 位作者 王冬生 张颂函 张天澍 袁永达 《植物保护》 北大核心 2026年第1期39-46,共8页
为明确甜菜夜蛾Spodoptera exigua短神经肽F(sNPF)基因对其取食行为、能量代谢及饥饿耐受性的调控作用,本研究克隆并分析了该基因功能。结果表明:甜菜夜蛾sNPF基因开放阅读框(ORF)为548 bp,编码182个氨基酸;其蛋白序列与鳞翅目夜蛾科其... 为明确甜菜夜蛾Spodoptera exigua短神经肽F(sNPF)基因对其取食行为、能量代谢及饥饿耐受性的调控作用,本研究克隆并分析了该基因功能。结果表明:甜菜夜蛾sNPF基因开放阅读框(ORF)为548 bp,编码182个氨基酸;其蛋白序列与鳞翅目夜蛾科其他物种sNPF蛋白氨基酸序列相似性达96.7%~100%,具有高度保守性。组织表达分析显示,sNPF在4龄幼虫期表达量最高,且在头部特异性高表达。通过RNA干扰技术(注射双链sNPF干扰RNA,dssNPF)研究发现:与对照(注射dsGFP)相比,干扰后24、48、72 h甜菜夜蛾4龄幼虫取食量分别显著降低13.15%、17.59%和20.13%;同期体重累计增长率分别显著下降10.14%、23.08%和34.59%。饥饿胁迫试验进一步揭示,干扰sNPF基因导致4龄幼虫48 h和72 h死亡率显著升高至54%和100%;同时,幼虫体内糖原含量显著减少37.53%,而海藻糖(升高66.42%)、海藻糖合成酶(升高24.26%)、胰岛素(升高53.59%)含量均显著上升。上述结果提示,sNPF基因通过调控取食行为、能量物质积累与代谢途径(如糖原消耗加速、海藻糖合成增强等),直接影响甜菜夜蛾的生长发育及饥饿耐受能力,在其生存适应过程中发挥关键作用。本研究为靶向sNPF基因开发新型甜菜夜蛾绿色防控技术提供了重要理论依据。 展开更多
关键词 甜菜夜蛾 短神经肽f 取食 糖代谢
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TC4钛合金在F^(−)离子溶液中的缝隙腐蚀行为研究
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作者 张雅妮 周航 凌杰 《表面技术》 北大核心 2026年第4期28-39,共12页
目的在海洋环境中,钛合金构件组装或与异种金属连接时形成的缝隙,极易成为腐蚀介质的渗透通道,由此引发的缝隙腐蚀严重威胁着海洋工程的安全运行。为深入探究这一问题,本研究以TC4钛合金(Ti-6Al-4V)为研究对象,利用自制缝隙腐蚀装置,系... 目的在海洋环境中,钛合金构件组装或与异种金属连接时形成的缝隙,极易成为腐蚀介质的渗透通道,由此引发的缝隙腐蚀严重威胁着海洋工程的安全运行。为深入探究这一问题,本研究以TC4钛合金(Ti-6Al-4V)为研究对象,利用自制缝隙腐蚀装置,系统考察了缝隙宽度及缝隙深度对其在含F^(−)溶液中腐蚀行为的影响。方法采用失重试验、局部电化学等实验方法,结合扫描电子显微镜(SEM)、X射线衍射(XRD)及X射线光电子能谱(XPS)等表征手段,重点分析了腐蚀速率、区域腐蚀产物组成、局部腐蚀电位分布及电化学过程特征。结果在含F^(−)溶液中,TC4钛合金缝隙内的腐蚀产物主要为TiF_(3)、Na_(2)TiF_(6)和TiO_(2),且随缝隙深度的增加,TiO_(2)含量逐渐减少,而TiF_(3)与Na_(2)TiF_(6)的含量则呈上升趋势。在0.1~0.3 mm的缝隙宽度范围内,0.2 mm时的缝隙腐蚀最为严重。此宽度下缝隙深处与缝隙口产生的电位差最大,且随腐蚀时间的延长,电位差进一步增大。氧匮乏状态下的“阳极”特征导致缝隙深处的腐蚀加剧并形成半闭塞电池,阳极区Tin⁺累积并水解使pH下降,F–离子迁入,缝隙深处至缝隙口部形成电流回路,使得点蚀坑在缝隙深处优先萌生并长大。结论在F^(−)离子溶液中,TC4钛合金缝隙腐蚀在缝隙底部最明显,且缝隙底部生成点蚀坑。 展开更多
关键词 TC4钛合金 f离子 缝隙腐蚀 缝隙宽度 缝隙深度 局部电化学测试
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马破伤风免疫球蛋白F(ab')_(2)临床综合评价
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作者 谢苗荣 郑亚安 +1 位作者 何新华 丁宁 《中国处方药》 2026年第3期53-56,共4页
目的 综合评价马破伤风免疫球蛋白F(ab')_(2)用于预防破伤风梭菌感染的短期被动免疫的临床价值。方法 采用定性与定量相结合的评价方法,基于循证医学、流行病学、临床医学、临床药学、药物经济学等方法学,通过公开资料、临床试验数... 目的 综合评价马破伤风免疫球蛋白F(ab')_(2)用于预防破伤风梭菌感染的短期被动免疫的临床价值。方法 采用定性与定量相结合的评价方法,基于循证医学、流行病学、临床医学、临床药学、药物经济学等方法学,通过公开资料、临床试验数据及文献二次评价,从安全性、有效性、经济性、创新性、适宜性、可及性六个维度进行系统评估。结果 马破伤风免疫球蛋白F(ab')_(2)作为传统破伤风抗毒素(TAT)的升级换代产品,经柱色谱纯化工艺制备,去除可结晶区域(Fc)段,显著降低免疫原性。临床前急毒、长毒试验未见明显毒性反应;Ⅲ期临床试验显示,其皮试阳性率仅为3.1%,过敏反应发生率低于1%,显著优于TAT。药效学研究表明,其中和抗体效价≥2 000 IU/mL,用药后6 h破伤风抗体水平扣除基线大于10 IU/L的比例达93.2%,保护效果持续至7 d。药物经济学评价显示,与TAT相比,其增量成本效果比(ICER)为-434.1元,具有经济性优势。产品已获36项专利,纳入国家医保乙类目录,全国24个省市挂网,覆盖1 500余家医疗机构,疗程费用占人均可支配收入比例低,可及性良好。结论 马破伤风免疫球蛋白F(ab')_(2)用于预防破伤风梭菌感染的短期被动免疫,临床价值证据充足,结果确定。 展开更多
关键词 马破伤风免疫球蛋白f(ab')_(2) 破伤风预防 被动免疫 安全性 有效性 药物经济学
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马破伤风免疫球蛋白F(ab')_(2)预防破伤风梭菌感染短期被动免疫的药物经济学评价
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作者 谢苗荣 郑亚安 +1 位作者 何新华 丁宁 《中国处方药》 2026年第2期41-44,共4页
目的比较马破伤风免疫球蛋白[F(ab')_(2)]与破伤风抗毒素(TAT)用于预防破伤风梭菌感染短期被动免疫的经济性,为临床用药决策及卫生资源配置提供循证依据。方法系统检索PubMed、The Cochrane Library、EMBASE、中国知网(CNKI)、万方... 目的比较马破伤风免疫球蛋白[F(ab')_(2)]与破伤风抗毒素(TAT)用于预防破伤风梭菌感染短期被动免疫的经济性,为临床用药决策及卫生资源配置提供循证依据。方法系统检索PubMed、The Cochrane Library、EMBASE、中国知网(CNKI)、万方、维普等数据库,收集马破伤风免疫球蛋白F(ab')_(2)与TAT用于破伤风梭菌感染短期被动免疫的对照研究,按照预设纳排标准筛选文献,根据文献的干预措施不同分成TAT组(对照组)和马破伤风免疫球蛋白F(ab')_(2)组(试验组),采用RevMan5.4软件对两组过敏反应发生率进行Meta分析;基于真实世界成本数据,以人均患者成本[对照组111.23元、试验组86.66元]为基础,结合Meta分析得到的过敏反应发生率结果,采用成本-效果分析计算增量成本-效果比(ICER),同时通过敏感性分析验证结果稳定性。结果成本方面:试验组人均治疗成本86.66元,对照组111.23元。效果方面:试验组过敏反应发生率0.37%,对照组过敏反应发生率6.08%。经济学评价:试验组C/E为86.98元(每提高1%避免过敏反应发生率的成本),对照组为118.43元;ICER为-430.30元。相较于对照组,试验组每提高1%避免过敏反应发生率可节约430.30元。敏感性分析:(成本波动±5%)显示,ICER波动范围为-3621.22~-237.20,始终为负值,结果稳定。结论马破伤风免疫球蛋白F(ab')_(2)在预防破伤风梭菌感染短期被动免疫中,不仅能显著降低过敏反应发生率,还能减少治疗总费用,具有显著的成本-效果优势。 展开更多
关键词 马破伤风免疫球蛋白f(ab')_(2) 破伤风抗毒素 药物经济学 成本-效果分析
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杂交紫薇(红火箭♀×四川粉花♂)F1代及其亲本的光合特性比较
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作者 李佳蔓 王佩云 +3 位作者 郭敏佳 文艺 陈炙 黄振 《四川林业科技》 2026年第1期13-19,共7页
为探索F1代紫薇与其亲本的光合特异性差异,在自然生长状态下测定了红火箭紫薇(♀)、四川粉花紫薇(♂)及其杂交F1代紫薇的光合色素含量及光响应曲线。结果表明:3种紫薇的叶绿素a(Chl a)、叶绿素b(Chl b)、类胡萝卜素(Car)和叶绿素总量(C... 为探索F1代紫薇与其亲本的光合特异性差异,在自然生长状态下测定了红火箭紫薇(♀)、四川粉花紫薇(♂)及其杂交F1代紫薇的光合色素含量及光响应曲线。结果表明:3种紫薇的叶绿素a(Chl a)、叶绿素b(Chl b)、类胡萝卜素(Car)和叶绿素总量(Chl)的大小关系均为:F1代紫薇>红火箭>四川粉花;净光合速率(Pn)大小关系为:F1代紫薇>四川粉花>红火箭;气孔导度(Gs)为:F1代紫薇>四川粉花>红火箭;光能利用效率(LUE)为:F1代紫薇>红火箭>四川粉花;蒸腾速率(Tr)在光合有效辐射(PAR)<1000μmol·m^(-2)·s^(-1)时:F1代紫薇>四川粉花>红火箭,在PAR>1200μmol·m^(-2)·s^(-1)时:红火箭>F1代紫薇>四川粉花;水分利用效率(WUE)在PAR为500~600μmol·m^(-2)·s^(-1)和1400~1500μmol·m^(-2)·s^(-1)时各出现峰值,且第一个峰值前,红火箭的WUE较高,第一个峰值后,四川粉花和F1代紫薇的WUE较高;F1代紫薇的最大净光合速率(P_(n max))最大,同时具有最高的光饱和点(LSP)、最低的光补偿点(LCP)和最低的暗呼吸速率(R_(d))。因此F1代紫薇较其亲本具有更大的光合潜能和更宽的光照生态幅,既可种植于光照相对较弱的林窗及疏林中下层,也可植于光照较强的行道和园林。在干旱背光的阴面适合种植红火箭紫薇,在干旱地区阳面更适合种植四川粉花紫薇。 展开更多
关键词 f1代 紫薇 光合参数 光合响应曲线
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优化自动化合成^(18)F-PSMA-1007用于PET/CT显像检出前列腺癌淋巴结转移
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作者 李宁 廖海 +5 位作者 牟兴宇 丘文明 甘美舍 杨志 肖国有 何正中 《中国医学影像技术》 北大核心 2026年第1期27-33,共7页
目的优化自动化合成^(18)F-前列腺特异性膜抗原(PSMA)-1007,观察其用于PET/CT显像检出前列腺癌(PCa)淋巴结转移的价值。方法基于CFN-MPS-200型自动合成模块以一步标记法自动化合成^(18)F-PSMA-1007,优化其标记条件,并对产品进行质量分... 目的优化自动化合成^(18)F-前列腺特异性膜抗原(PSMA)-1007,观察其用于PET/CT显像检出前列腺癌(PCa)淋巴结转移的价值。方法基于CFN-MPS-200型自动合成模块以一步标记法自动化合成^(18)F-PSMA-1007,优化其标记条件,并对产品进行质量分析。对13例PCa患者行^(18)F-PSMA-1007PET/CT显像,以术后免疫组织化学结果为标准,计算其检测淋巴结转移的敏感度、特异度、准确率、阳性预测值(PPV)和阴性预测值(NPV)。结果优化后总合成时间缩短至37min,放射化学产率达(44.82±4.64)%(未衰变校正,n=3),放射性活度为(19.74±2.81)GBq,放射化学纯度>99.50%,乙醇残留量为(7.43±1.55)%(V/V),放射性核素纯度>99.33%,均符合标准要求。^(18)F-PSMA-1007PET/CT显像图像质量优异、具有低肾脏排泄特性,其检测淋巴结转移的敏感度、特异度、准确率、PPV及NPV分别为84.62%、97.58%、96.63%、73.33%及98.77%。结论基于CFN-MPS-200模块可高活度合成^(18)F-PSMA-1007,工艺简便、稳定,产品放射化学纯度高,用于PET/CT显像检出PCa淋巴结转移表现优异。 展开更多
关键词 前列腺肿瘤 前列腺特异性抗原 正电子发射断层显像和计算机体层摄影术 ^(18)f-PSMA-1007
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SEMA3F靶向CXCR4抑制肝癌肝移植术后 复发转移机制的研究
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作者 罗来邦 徐志丹 +4 位作者 胡续光 张友福 方泽鸿 刘刚 王绪杨 《实用中西医结合临床》 2026年第2期1-5,21,共6页
目的探讨信号素3F(SEMA3F)通过靶向趋化因子受体4(CXCR4)对肝癌肝移植术后复发转移的抑制作用,并探究SEMA3F通过调节CXCR4表达对肝癌细胞增殖、迁移、侵袭能力的影响。方法选取2024年1~12月进行肝癌移植术的50例肝癌患者。收集术中部分... 目的探讨信号素3F(SEMA3F)通过靶向趋化因子受体4(CXCR4)对肝癌肝移植术后复发转移的抑制作用,并探究SEMA3F通过调节CXCR4表达对肝癌细胞增殖、迁移、侵袭能力的影响。方法选取2024年1~12月进行肝癌移植术的50例肝癌患者。收集术中部分肝癌组织和癌旁肝组织,采用蛋白印迹法检测SEMA3F、CXCR4蛋白表达水平。将SK-Hep-1细胞分为空白组、pcDNA-SEMA3F阴性对照质粒(pc-NC)组、pcDNA-SEMA3F质粒(pc-SEMA3F)组、siRNA SEMA3F阴性对照质粒(si-NC)组、siRNA SEMA3F质粒(si-SEMA3F)组;pc-NC+pc-CXCR4-NC阴性对照质粒(pc-CXCR4-NC)组、pc-SEMA3F+pc-CXCR4-NC组、pc-SEMA3F+pcDNA-CXCR4质粒(pc-CXCR4)组,并将相应的质粒用转染试剂转染至各组细胞。实时荧光定量PCR、蛋白印迹法检测转染后各组SK-Hep-1细胞中SEMA3F、CXCR4的mRNA和蛋白表达水平。结果与癌旁肝组织相比较,肝癌组织中SEMA3F蛋白表达水平明显降低,CXCR4蛋白表达水平明显升高(P<0.001)。与空白组、pc-NC+pc-CXCR4-NC组相比较,pc-SEMA3F+pc-CXCR4-NC组、pc-SEMA3F+pc-CXCR4组SK-Hep-1细胞中SEMA3F mRNA与蛋白表达水平均明显升高,CXCR4 mRNA与蛋白表达水平、侵袭细胞数、划痕愈合率均明显降低(P<0.05);与空白组、pc-NC+pc-CXCR4-NC组相比较,pc-SEMA3F+pc-CXCR4-NC组转染后48、72 h细胞增殖活力明显降低(P<0.05);与pc-SEMA3F+pc-CXCR4-NC组相比较,pc-SEMA3F+pc-CXCR4组SK-Hep-1细胞中SEMA3F mRNA与蛋白表达水平均明显降低,CXCR4 mRNA与蛋白表达水平、侵袭细胞数、转染后72 h细胞增殖活力、划痕愈合率均明显升高(P<0.05)。结论在肝癌组织中SEMA3F蛋白呈低表达、CXCR4蛋白呈高表达,且与肝癌肝移植术后复发转移密切相关;SEMA3F可靶向调节CXCR4的表达水平进而抑制肝癌SK-Hep-1细胞增殖、迁移、侵袭。 展开更多
关键词 肝癌 肝移植 信号素3f 趋化因子受体4 细胞增殖 复发 迁移 侵袭
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下颌骨骨膜骨肉瘤^(18)F-FDG PET/CT检查表现1例
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作者 李淑娟 汪春 +1 位作者 罗丹 江杰 《医学影像学杂志》 2026年第1期177-179,共3页
骨膜骨肉瘤是一种起源于骨表面结缔组织或骨膜的中度恶性软骨母细胞骨肉瘤,也叫皮质旁成软骨细胞骨肉瘤,临床较少见,并且极少发生于颌骨。本文报道1例经病理证实为下颌骨骨膜骨肉瘤的患者,CT见下颌骨体右旁软组织结节,增强边缘不均匀强... 骨膜骨肉瘤是一种起源于骨表面结缔组织或骨膜的中度恶性软骨母细胞骨肉瘤,也叫皮质旁成软骨细胞骨肉瘤,临床较少见,并且极少发生于颌骨。本文报道1例经病理证实为下颌骨骨膜骨肉瘤的患者,CT见下颌骨体右旁软组织结节,增强边缘不均匀强化,相邻下颌骨骨质无破坏。MRI上T_(1)WI呈低信号,T_(2)WI呈高信号,相邻下颌骨髓腔未见异常信号。^(18)F-FDG PET/CT显像肿瘤实性部分呈高代谢。这些影像表现对提高该疾病的认识具有一定意义。 展开更多
关键词 正电子发射计算机断层显像/X线计算机断层显像 氟代脱氧葡萄糖 骨膜骨肉瘤
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利用国产氟多功能模块合成^(18)F-DCFPyL的条件优化
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作者 张帆 孙睿旋 +3 位作者 王卓霄 郑强 于璟 薛飞 《科技创新与应用》 2026年第6期59-62,共4页
该文使用国产氟多功能模块,研究全自动化合成前列腺特异性膜抗原(PSMA)显像剂^(18)F-DCFPyL的工艺流程。分别从除水条件、分离纯化方法以及半制备HPLC流动相配比对合成结果的影响进行探讨,以优化^(18)F-DCFPyL的合成条件。优化后的合成... 该文使用国产氟多功能模块,研究全自动化合成前列腺特异性膜抗原(PSMA)显像剂^(18)F-DCFPyL的工艺流程。分别从除水条件、分离纯化方法以及半制备HPLC流动相配比对合成结果的影响进行探讨,以优化^(18)F-DCFPyL的合成条件。优化后的合成条件为氟离子加乙腈除水应至少分2次加入、洗脱方法为粗产物直接经半制备HPLC分离纯化、流动相为6%乙醇与18%乙醇梯度洗脱。^(18)F-DCFPyL合成时间约为50 min,未校正合成产率为(7.46±3.93)%(n=15),产品的放射化学纯度大于95%。通过优化合成工艺,可以提高^(18)F-DCFPyL全自动合成的效率和稳定性,产品能够更好地满足临床需求。 展开更多
关键词 ^(18)f-DCfPyL 显像剂 正电子药物合成 合成工艺 氟离子
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