Objective To investigate the effects of obesity-related indexes on cardiovascular autonomic nervous function in type 2 diabetes mellitus(T2DM)patients.Methods A total of 421 T2DM patients treated in the Department of Endocrinology of Gansu Provincial People's Hospital were enrolled in this study from October 2020 to October 2023.All the patients were divided into simple T2DM group with VFA<100 cm2(n=193)and obese group with VFA≥100 cm2(OB,n=228)according to visceral fat area(VFA).BMI,waist-to-height ratio(WHtR),waist-to-hip ratio(WHR),lipid accumulation index(LAP),visceral fat index(VAI),Chinese visceral fat index(CVAI),tapeness index(CI),body shape index(ABSI),and body roundness index(BRI)were calculated.Time domain parameters of heart rate variability(HRV)in 24 h holter electrocardiogram were recorded,including the global standard deviation(SDNN)of normal sinus RR interval,standard deviation of mean value of sinus RR interval(SDANN),root mean square difference(RMSSD)of normal continuous sinus RR interval.The percentage of adjacent RR interval difference>50 ms in total interval(PNN50),the HRV triangle index,the standard deviation of the difference of the entire adjacent NN interval length(SDSD).Results Compared with T2DM group,the OB group showed an increase in age,weight,BMI,WC,hip circumference(HC),neck circumference(NC),SBP,HbA1c,TG,SUA,CI,WHtR,WHR,VFA,SFA,VAI,LAP,CVAI,and BRI(P<0.05 or P<0.01),while a decrease in HDL-C(P<0.05).The SDNN,SDANN,SDSD,RMSSD,HRV trigonometric index,and PNN50 were lower in OB group than in T2DM group(P<0.05 or P<0.01).Spearman correlation analysis showed that SDNN and HRV trigonometric index was negatively correlated with age,DM duration,HR,SBP,PWV,WHtR,TG,SUA,VAI,LAP,BRI,VFA,LAP,and CVAI(P<0.05 or P<0.01).Logistic regression analysis shows that age,VFA,and LAP are influencing factors for cardiac autonomic dysfunction.The analysis of the working characteristic curve of the subjects showed that the area under the curve of VFA,age,and LAP in predicting cardiovascular autonomic dysfunction was 0.680,0.614,and 0.577,with sensitivity of 87.5%,41.7%,and 61.8%,and specificity of 47.3%,73.6%,and 55.6%respectively.Conclusions BMI,HC,NC,WC,TG,SFA,CI,WHtR,WHR,LAP,BRI,VAI,CVAI and VFA are closely related to cardiovascular autonomic nervous function in T2DM patients.As VFA,Ageand LAP increase,the risk of cardiovascular autonomic dysfunction increases.

Objective To investigate the predictive value of bone metabolism parameters on cardiac autonomic nervous system function in patients with type 2 diabetes mellitus(T2DM).Methods A total of 328 patients with T2DM hospitalized in the Department of Endocrinology of Gansu Provincial People's Hospital were enrolled in this study from October 2022 to October 2023.According to the serum 25(OH)D level,all the participants were divided into<10 ng/ml group(n=80),10～20 ng/ml group(n=173),and 20～30 ng/ml group(n=75).Biochemical indicators,bone metabolic parameters,left ventricular mass(LVM)and left ventricular mass index(LVMI)were compared.Time domain indicators ofheart rate variability(HRV)in 24 h holter electrocardiogram,including the global standard deviation of normal sinus RR interval(SDNN),sinus RR interval mean standard deviation(SDANN),and normal continuous sinus RR interval difference root mean square(RMSSD).Meanwhile,adjacent RR interval difference>50 ms as a percentage of the total inter-period(PNN50),HRV triangle index,standard deviation of the difference between the length of the entire adjacent NN interperiod(SDSD),and 24 h holter electrocardiogram HRV time-domain relevant indicators were compared among the three groups.The influence of bone metabolism parameters on cardiac autonomic nervous function and their correlation were analyzed,and the optimal cutting point of cardiac autonomic nervous function was predicted by receiver operating characteristic(ROC)curve.Results SBP,heart rate(HR),FPG,PWV,PTH and β-CTX in groups of 10 ng/ml,10～20 ng/ml and 20～30 ng/ml decreased in turn(P<0.05),while HDL-C,ABI,25(OH)D,Ca2+and PNN50 decreased.Correlation analysis between Spearman and Pearson showed that 25(OH)D was positively correlated with SDNN,HRV triangle index,PNN50 and rMSSD(P<0.01).Logistic regression analysis showed that 25(OH)D,Ca2+and HR were the influencing factors of cardiac autonomic nervous dysfunction in patients with T2DM.The ROC curve analysis showed that the areas under the ROC curve of 25(OH)D,Ca2+and HR were 0.791,0.607 and 0.629,respectively,with sensitivity of 73.4%,53.2%and 38.7%,and specificity of 74.0%,93.6%and 81.4%,respectively.Conclusions 25(OH)D is the influencing factor of cardiac autonomic nervous dysfunction in patients with T2DM,and patients with high degree of deficiency are more prone to cardiac autonomic nervous dysfunction.

Objective To investigate the association between body roundness index(BRI)and hyperuricemia(HUA)in patients with type 2 diabetes mellitus(T2DM).Methods 555 T2DM inpatients were selected from July 2022 to October 2023 in Gansu Province People's Hospital Endocrinology.According to BRI,the T2DM patients were divided into four group:low BRI(L-BRI,BRI≤3.579,n=140)group,moderate BRI(M-BRI,3.579

Objective To investigate the predictive value of bone metabolism parameters on cardiac autonomic nervous system function in patients with type 2 diabetes mellitus(T2DM).Methods A total of 328 patients with T2DM hospitalized in the Department of Endocrinology of Gansu Provincial People's Hospital were enrolled in this study from October 2022 to October 2023.According to the serum 25(OH)D level,all the participants were divided into<10 ng/ml group(n=80),10～20 ng/ml group(n=173),and 20～30 ng/ml group(n=75).Biochemical indicators,bone metabolic parameters,left ventricular mass(LVM)and left ventricular mass index(LVMI)were compared.Time domain indicators ofheart rate variability(HRV)in 24 h holter electrocardiogram,including the global standard deviation of normal sinus RR interval(SDNN),sinus RR interval mean standard deviation(SDANN),and normal continuous sinus RR interval difference root mean square(RMSSD).Meanwhile,adjacent RR interval difference>50 ms as a percentage of the total inter-period(PNN50),HRV triangle index,standard deviation of the difference between the length of the entire adjacent NN interperiod(SDSD),and 24 h holter electrocardiogram HRV time-domain relevant indicators were compared among the three groups.The influence of bone metabolism parameters on cardiac autonomic nervous function and their correlation were analyzed,and the optimal cutting point of cardiac autonomic nervous function was predicted by receiver operating characteristic(ROC)curve.Results SBP,heart rate(HR),FPG,PWV,PTH and β-CTX in groups of 10 ng/ml,10～20 ng/ml and 20～30 ng/ml decreased in turn(P<0.05),while HDL-C,ABI,25(OH)D,Ca2+and PNN50 decreased.Correlation analysis between Spearman and Pearson showed that 25(OH)D was positively correlated with SDNN,HRV triangle index,PNN50 and rMSSD(P<0.01).Logistic regression analysis showed that 25(OH)D,Ca2+and HR were the influencing factors of cardiac autonomic nervous dysfunction in patients with T2DM.The ROC curve analysis showed that the areas under the ROC curve of 25(OH)D,Ca2+and HR were 0.791,0.607 and 0.629,respectively,with sensitivity of 73.4%,53.2%and 38.7%,and specificity of 74.0%,93.6%and 81.4%,respectively.Conclusions 25(OH)D is the influencing factor of cardiac autonomic nervous dysfunction in patients with T2DM,and patients with high degree of deficiency are more prone to cardiac autonomic nervous dysfunction.

Objective To investigate the relationship between interventricular septal dimensions(IVSd)and urinary albumin/creatinine ratio(UACR)in patients with type 2 diabetes mellitus(T2DM).Methods A total of 757 patients with T2DM hospitalized in the Department of Endocrinology of Gansu Provincial People's Hospital from March 2021 to April 2024 were enrolled in this study.All the patients were divided into T2DM patients without proteinuria(n=388),microproteinuria group(Mic,n=260)and macroproteinuria group(Mac,n=109)according to the UACR levels.General clinical data and biochemical indexes were collected from all the patients.Color Doppler echocardiography was used to record left ventricular ejection fraction(LVEF),left ventricular fraction shortening(LVFS),IVSd,left ventricular posterior wall dimensions(LVPWd),and left atrial diameter(LAD).Pearson correlation analysis was conducted to analyze the correlation between IVSd,LVPWd and related indicators of renal function.Logistic regression analysis was conducted to analyze the influencing factors for T2DM patients with proteinuria.The receiver operating characteristic(ROC)curve was used to analyze the predictive value of the DM duration and IVSd in patients with T2DM and proteinuria.Results The DM duration,SBP,FIns,HbA1c,Scr,24 hUTP,UACR,UAER,IVSd,LVPWd were increased successively(P<0.05),while LVEF and eGFR were decreased successively(P<0.05)in T2DM,Mic,Mac group.Age was higher in Mic group than in T2DM group(P<0.05).DBP and FPG were higher in Mac group than in T2DM and Mic group(P<0.05).Pearson correlation analysis showed that IVSd and LVPWd were positively correlated with 24 hUTP,UACR,UAER and Scr(P<0.05),and negatively correlated with eGFR(P<0.05).Logistic regression analysis indicated that the DM duration and IVSd were significant influencing factors for proteinuria in patients with T2DM.ROC curve showed that the area under ROC curve of IVSd was 0.620,with sensitivity 43.3%and specificity 76.8%,respeictively.Conclusions The DM duration and IVSd are influencing factors for UACR in patients with T2DM.The risk of proteinuria in T2DM patients increases with rising IVSd.

Objective To investigate the relationship between interventricular septal dimensions(IVSd)and urinary albumin/creatinine ratio(UACR)in patients with type 2 diabetes mellitus(T2DM).Methods A total of 757 patients with T2DM hospitalized in the Department of Endocrinology of Gansu Provincial People's Hospital from March 2021 to April 2024 were enrolled in this study.All the patients were divided into T2DM patients without proteinuria(n=388),microproteinuria group(Mic,n=260)and macroproteinuria group(Mac,n=109)according to the UACR levels.General clinical data and biochemical indexes were collected from all the patients.Color Doppler echocardiography was used to record left ventricular ejection fraction(LVEF),left ventricular fraction shortening(LVFS),IVSd,left ventricular posterior wall dimensions(LVPWd),and left atrial diameter(LAD).Pearson correlation analysis was conducted to analyze the correlation between IVSd,LVPWd and related indicators of renal function.Logistic regression analysis was conducted to analyze the influencing factors for T2DM patients with proteinuria.The receiver operating characteristic(ROC)curve was used to analyze the predictive value of the DM duration and IVSd in patients with T2DM and proteinuria.Results The DM duration,SBP,FIns,HbA1c,Scr,24 hUTP,UACR,UAER,IVSd,LVPWd were increased successively(P<0.05),while LVEF and eGFR were decreased successively(P<0.05)in T2DM,Mic,Mac group.Age was higher in Mic group than in T2DM group(P<0.05).DBP and FPG were higher in Mac group than in T2DM and Mic group(P<0.05).Pearson correlation analysis showed that IVSd and LVPWd were positively correlated with 24 hUTP,UACR,UAER and Scr(P<0.05),and negatively correlated with eGFR(P<0.05).Logistic regression analysis indicated that the DM duration and IVSd were significant influencing factors for proteinuria in patients with T2DM.ROC curve showed that the area under ROC curve of IVSd was 0.620,with sensitivity 43.3%and specificity 76.8%,respeictively.Conclusions The DM duration and IVSd are influencing factors for UACR in patients with T2DM.The risk of proteinuria in T2DM patients increases with rising IVSd.

Objective To investigate the effects of obesity-related indexes on cardiovascular autonomic nervous function in type 2 diabetes mellitus(T2DM)patients.Methods A total of 421 T2DM patients treated in the Department of Endocrinology of Gansu Provincial People's Hospital were enrolled in this study from October 2020 to October 2023.All the patients were divided into simple T2DM group with VFA<100 cm2(n=193)and obese group with VFA≥100 cm2(OB,n=228)according to visceral fat area(VFA).BMI,waist-to-height ratio(WHtR),waist-to-hip ratio(WHR),lipid accumulation index(LAP),visceral fat index(VAI),Chinese visceral fat index(CVAI),tapeness index(CI),body shape index(ABSI),and body roundness index(BRI)were calculated.Time domain parameters of heart rate variability(HRV)in 24 h holter electrocardiogram were recorded,including the global standard deviation(SDNN)of normal sinus RR interval,standard deviation of mean value of sinus RR interval(SDANN),root mean square difference(RMSSD)of normal continuous sinus RR interval.The percentage of adjacent RR interval difference>50 ms in total interval(PNN50),the HRV triangle index,the standard deviation of the difference of the entire adjacent NN interval length(SDSD).Results Compared with T2DM group,the OB group showed an increase in age,weight,BMI,WC,hip circumference(HC),neck circumference(NC),SBP,HbA1c,TG,SUA,CI,WHtR,WHR,VFA,SFA,VAI,LAP,CVAI,and BRI(P<0.05 or P<0.01),while a decrease in HDL-C(P<0.05).The SDNN,SDANN,SDSD,RMSSD,HRV trigonometric index,and PNN50 were lower in OB group than in T2DM group(P<0.05 or P<0.01).Spearman correlation analysis showed that SDNN and HRV trigonometric index was negatively correlated with age,DM duration,HR,SBP,PWV,WHtR,TG,SUA,VAI,LAP,BRI,VFA,LAP,and CVAI(P<0.05 or P<0.01).Logistic regression analysis shows that age,VFA,and LAP are influencing factors for cardiac autonomic dysfunction.The analysis of the working characteristic curve of the subjects showed that the area under the curve of VFA,age,and LAP in predicting cardiovascular autonomic dysfunction was 0.680,0.614,and 0.577,with sensitivity of 87.5%,41.7%,and 61.8%,and specificity of 47.3%,73.6%,and 55.6%respectively.Conclusions BMI,HC,NC,WC,TG,SFA,CI,WHtR,WHR,LAP,BRI,VAI,CVAI and VFA are closely related to cardiovascular autonomic nervous function in T2DM patients.As VFA,Ageand LAP increase,the risk of cardiovascular autonomic dysfunction increases.

Objective To investigate the association between body roundness index(BRI)and hyperuricemia(HUA)in patients with type 2 diabetes mellitus(T2DM).Methods 555 T2DM inpatients were selected from July 2022 to October 2023 in Gansu Province People's Hospital Endocrinology.According to BRI,the T2DM patients were divided into four group:low BRI(L-BRI,BRI≤3.579,n=140)group,moderate BRI(M-BRI,3.579

Objective To explore the correlation between brachial and ankle pulse wave conduction velocity(baPWV)and cardiac structure and function in patients with type 2 diabetes mellitus(T2DM).Methods A total of 443 patients with T2DM who were treated in The Endocrinology Department of Gansu Provincial People's Hospital were enrolled in this study from June 2022 to October 2023.All the patients were divided into simple T2DM group(T2DM,baPWV<1400 cm/s,n=221)and atherosclerosis group(AS,baPWV≥1400 cm/s,n=222)based on baPWV.The cardiac ultrasound diagnostic instrument was used to record left ventricular ejection fraction(LVEF),end diastolic left ventricular diameter(LVd),end diastolic interventricular septal thickness(IVSd),end diastolic left ventricular posterior wall thickness(LVPWd),ratio of early to late diastolic peak velocity of mitral valve annulus(E/A),and ratio of early diastolic peak velocity of mitral valve orifice to early diastolic peak velocity of mitral valve annulus(E/E').Results Age,DM duration,SBP,DBP,HbA1c,TG,ABI,LVEF,IVSd,LVPWd,E/A<1,E/E'＞14,were higher in AS group than in T2DM group(P<0.05 or P<0.01).Spearman correlation analysis shows that E/A<1 was positively correlated with age,DM duration,BMI,SBP,DBP,and ABI(P<0.05 or P<0.01),while negatively correlated with baPWV(P<0.01).Pearson correlation analysis shows that LVPWd was positively correlated with age,DM duration,BMI,SBP,DBP,baPWV,and Scr(P<0.05 or P<0.01).Logistic regression analysis shows that baPWV,ABI,and SBP were the influencing factors for left ventricular diastolic dysfunction.The analysis of the working characteristic curve of the subjects shows that the area under the curve of baPWV,SBP and ABI for predicting left ventricular diastolic dysfunction is 0.647,0.643,and 0.624,with the best cutoff points being 1398.5 cm/s,125.5 mmHg,and 1.107.Conclusions baPWV is closely related to cardiac structure and function in T2DM patients.As baPWV increases,the risk of left ventricular diastolic insufficiency and hypertrophy rises.

General education in biological courses such as "Principal Biology" is an essential avenue for gaining an understanding of life science and developing an interest in the field. The reform of biological education teaching mode based on interdisciplinary approaches aims to foster cross-disciplinary talents, which is crucial for the rapid development of China's bioeconomy. Teaching method that simply superimposes different subjects is difficult to discover the value of interdisciplinary education. To address this, a novel teaching system and an innovative teaching mode were proposed for "Principal Biology" course by integrating science and engineering subjects, based on the cross-disciplinary feature in Beijing Institute of Technology. The system involves the design of cross-disciplinary course content and the integration of multiple disciplines and knowledge points based on students' majors, taking into account the characteristics of students' physical and mental development. To improve students' scientific literacy and interdisciplinary thinking ability, differentiated and major-driven teaching modes were applied by incorporating the "1+N" mixed and immersive cross-thinking training. The effectiveness of tailored cross-disciplinary teaching was evaluated using "in-teaching" and "post-teaching" data feedback models, which promote the optimization of teaching process and enhance the quality of education in cross-disciplinary biological science.
Humans ; Students ; Curriculum ; Biological Science Disciplines/education* ; Universities ; Biology/education*