Objective To investigate the effect of statin on trabecular bone microstructure by using trabecular bone score (TBS), a new type of bone microstructure evaluation index. Methods A total of 253 middle and aged patients hospitalized in the First Affiliated Hospital of Nanjing Medical University between January 2014 and March 2016 were retrospectively analyzed. According to whether statin was used or not, patients were divided into two groups: 90 patients in the statin use group (statin was use for more than 1 year) and 163 in the control group (not taken any statin). Serum biochemical indicators, such as triacylglycerol, total cholesterol, high density lipoprotein cholesterol, low density lipoprotein cholesterol, alkaline phosphatase, fasting blood glucose and 25 hydroxy vitamin D, were compared between the two groups. Dual energy X-ray absorptiometry (DXA) was used to measure the bone mineral density (BMD) of lumbar spine and femoral neck. TBS was calculated with TBS iNsight? software, and the DXA image of lumbar spine were analyzed. Results Values of total cholesterol and low density lipoprotein cholesterol were significantly lower in statin group compared with those of control group (P<0.001), while no significant differences in other biochemical indicators between two groups (P>0.05). There was higher lumbar spine BMD statin group compared to that of control group (g/cm2:1.04 ± 0.19 vs. 0.96 ± 0.14, P<0.01). There was higher lumbar spine BMD and higher TBS (1.31±0.09 vs. 1.26±0.09, P<0.01) in statin group than that of control group. There was no difference in the femoral neck BMD between the two groups (P>0.05). Conclusion Statin increases lumbar spine BMD and improves trabecular bone microstructure in middle and aged people.

Objective:To investigate the correlation between depression risk and the test time for dual-task timed up-and-go(TUG)test in the elderly.Methods:A total of 193 elderly volunteers aged 60 years and over who lived in the Nanjing community of Jiangsu Province were recruited.The Geriatric Depression Scale(GDS)was used to screen for geriatric depression.The single-task TUG(TUG-single), TUG with additional operational tasks(TUG-manual)and TUG with additional cognitive tasks(TUG-cognitive)were tested in all subjects.The differences in test times taken to complete TUG-single, TUG-manual and TUG-cognitive tests were analyzed by ANOVA.The correlation of GDS scores with test time for TUG-single, TUG-manual, TUG-cognitive was analyzed by using Pearson's correlation.Results:The average test times for TUG-cognitive and TUG-manual tests were longer than that for TUG-single test( P<0.0001). The higher the GDS score, the longer the TUG-single test time, with a significantly positive correlation between GDS and the test time for TUG-single( r=0.2261, P=0.0016). Similarly, GDS score showed significantly positive correlations with the test time for TUG-manual( r=0.2359, P=0.0010)and the TUG-cognitive test time( r=0.1946, P=0.0067). Conclusions:The increase of depression risk is significantly and positively correlated with the prolongation of the TUG test time in the elderly.The TUG test can be used to assess the functional mobility in elderly patients with depression.

Objective:To evaluate insulin sensitivity(IS)and pancreatic β-cell secretion function in the elderly, analyze the influencing factors, and compare these parameters with those observed in adults.Methods:A total of 301 participants were selected from the health examination population at the Geriatrics Endocrinology Department of Jiangsu Provincial People's Hospital, all of whom had no history of diabetes, between December 2018 and June 2021.Participants were categorized into elderly and adult groups based on age.Personal and medical histories were recorded, and various measurements, including height, weight, waist circumference, hip circumference, blood lipids, and nutritional metabolic indicators, were obtained.Body composition was assessed using dual-emission X-ray absorptiometry(DXA).The oral minimal model(OMM)method was utilized to derive the insulin sensitivity index(ISI), dynamic insulin secretion(Φd), static insulin secretion(Φs), total insulin secretion(Φt), and disposition index(DI).Participants were grouped according to the results of oral glucose tolerance tests.Finally, the factors influencing IS and pancreatic β-cell function were analyzed in both elderly and adult populations, as well as to identify any differences between the two groups.Results:Following adjustments for gender and body mass index(BMI), partial correlation analysis indicated a decrease in Φd, DI-Φd, and DI-Φt with advancing age( r=-0.219, -0.210, -0.187; P=0.005, 0.015, 0.017).In contrast, ISI, Φs, Φt, and DI-Φs showed no significant correlation with age.Although ISI levels were comparable between the elderly and adult groups, individuals newly diagnosed with diabetes in the elderly cohort exhibited higher DI-Φd, DI-Φs, and DI-Φt compared to those in the adult group after ISI correction.When incorporating age, high-density lipoprotein cholesterol(HDL-C), total muscle mass, the android to gynoid ratio(A/G), and fat mass index(FMI)into a binary Logistic regression model, the findings underscored FMI as a common risk factor for both elderly and adult cohorts concerning the ISI( OR=2.324, 1.773; P=0.032, 0.005).The A/G ratio was identified as a risk factor for DI-Φd in both age groups( OR=69 252.464, 407.653; P=0.012, 0.001).Furthermore, HDL-C was recognized as a protective factor for ISI( OR=0.024, P=0.012)in the elderly, while advancing age( OR=1.454, P=0.039)was found to be a risk factor for DI-Φs in this demographic.Total muscle mass and the A/G ratio were also acknowledged as risk factors for ISI( OR=1.054, 15.725; P=0.021, 0.026), with FMI serving as a risk factor for DI-Φs in the adult cohort( OR=1.826, P=0.035). Conclusions:The secretion function of pancreatic β-cells declines with age, whereas ISI remains unchanged.The factors affecting ISI, DI-Φd, and DI-Φs in elderly and adult populations show notable differences.This indicates that implementing targeted lifestyle interventions for distinct age groups may be more effective in preserving both ISI and pancreatic β-cell function.