The presence of artificial light enables humans to be active 24 h a day.Many people across the globe live in a social culture that encourages staying up late to meet the demands of various activities, such as work and school. Sleep deprivation (SD) is a severe health problem in modern society. Meanwhile, as with cardiometabolic disease, there was an obvious tendency that coronary heart disease (CHD) to become a global epidemic chronic disease. Specifically, SD can significantly increase the morbidity and mortality of CHD. However, the underlying mechanisms responsible for the effects of SD on CHD are multilayered and complex. Inflammatory response, lipid metabolism, oxidative stress, and endothelial function all contribute to cardiovascular lesions. In this review, the effects of SD on CHD development are summarized, and SD-related pathogenesis of coronary artery lesions is discussed. In general, early assessment of SD played a vital role in preventing the harmful consequences of CHD.

Objective:To explore the changes of bone turnover markers induced by sleep deprivation (SD) and the effect of melatonin supplementation on the bone turnover status.Methods:Six-week-old Wistar male rats were divided into SD, normal control (NC), and melatonin supplementation (SD+ MT) groups. Acute SD model was established using a modified multi-level bench method. The bone turnover markers, corticosterone, and melatonin in serum as well as Cathepsin K(CTSK) mRNA expression in bone tissue were tested.Results:Acute SD disrupted the balance between bone formation and bone absorption evidenced by rapid decreased serum procollagen type Ⅰ N-terminal propeptide (PⅠNP) levels and increased β cross-linked C-telopeptide of type Ⅰ collagen (β-CTX) levels ( P=0.003) from 24 h to 72 h. The exogenous melatonin treatment decreased β-CTX [(512.4±95.8) ng/mL vs (696.0±76.5) ng/mL, P=0.004] and the osteoclast-related gene CTSK mRNA level after 72 h SD. Conclusions:Acute SD accelerates bone resorption, which could be partially alleviated by melatonin supplementation.

Objective To explore the correlation between sarcopenia and body fat percentage(BF%)in elderly male patients with type 2 diabetes mellitus(T2DM).Methods A total of 291 elderly male T2DM patients who were hospitalized in the Endocrinology Department of Xuanwu Hospital,Capital Medical University were enrolled in this study from December 2018 to September 2019.All the patients were divided into sarcopenia group(n=35)and non sarcopenia group(n=256).BF%,skeletal muscle mass index(SMI),grip strength,gait speed,HbA1c,hemoglobin(Hb),blood uric acid(SUA),albumin and vitamin D(Vit D)were measured in all the participants.Results Compared with the non sarcopenia group,age,HbA1c and BF%were increased,while BMI,Vit D,SMI,Hb,SUA,ALB,grip strength,and gait speedwere decreased in sarcopenia group(P＜0.05 or P＜0.01).Pearson correlation analysis showed that SMI was positively correlated with BMI,Vit D,Hb,and SUA(P＜0.05 or P＜0.01),and negatively correlated with HbA1c(P＜0.01).Grip strength and gait speed are positively correlated with Vit D and Hb(P＜0.01),and negatively correlated with BF%(P＜0.01).Logistic regression analysis showed that age and BF%were risk factors for sarcopenia,while BMI and Vit D were protective factors for sarcopenia.Conclusions High BF%significantly increases the risk of sarcopenia in elderly male T2DM patients.

Objective To explore the value of Fast Dixon in improving the quality of thyroid turbo spin echo(TSE)T2WI images via comparing the quality of thyroid MR T2WI images based on Fast Dixon,Dixon,and BLADE sequences.Methods The prospective study included 11 healthy volunteers,who underwent neck MR scanning.The evaluation of image quality was performed via a combination of objective measures and subjective ratings.Objective measures included signal-to-noise ratio(SNR)of bilateral thyroid and muscles,and contrast-to-noise ratio(CNR).Subjective measures included overall image quality,uniformity of fat suppression,sharpness of thyroid margins and muscles surrounding the thyroid,image noise in the neck region,image background noise,and image quality of the nasopharynx.Two diagnostic physicians with over 10 years of thyroid diagnostic experience independently evaluated the images via a 5-point scale.Inter-observer agreement was analyzed via Spearman correlation coefficient.Statistical analysis was performed using SPSS 22.0 software,including normality and homogeneity of variance tests for continuous data.Kruskal-Wallis one-way ANOVA was used for statistical analysis of subjective measures,followed by post hoc pairwise comparisons.A significance level of P<0.05 was considered statistically significant.Results Eleven healthy volunteers,the SNR of bilateral thyroid and muscles was significantly higher in Fast Dixon sequence than that in Dixon and BLADE sequences.For bilateral CNR,Fast Dixon sequence was also significantly higher than that of Dixon and BLADE sequences.Fast Dixon sequence also had significant advantages in seven subjective ratings indicators(P<0.001).Conclusion The Fast Dixon sequence shows the highest image quality and important application value in the display and evaluation of thyroid lesions.