Objective: To compare the weight loss and metabolic profile between a continuous energy-restricted diet and intermittent fasting diet in order to present an optimal nutritional weight reduction method for obese people in China. Methods: Sixty overweight or obese adults were selected and divided into two groups as the continuous energy-restricted diet group and the intermittent fasting diet group. Height, weight, waist circumference, body mass index(BMI), body fat, change of visceral fatarea, fasting glucose(FPG), triglyceride(TG), total cholesterol(TC), high density cholesterol(HDL), low density cholesterol(LDL), glutamic pyruvicaminotransferase(AST), signglutamic pyruvic transaminase(ALT), gamma-glutamyltranspeptidase(GGT), alkalinephosphatase (ALP), fasting insulin level(FINS) and HOMA-IR were assessed at baseline and 8 weeks after weight loss methods carried. Results: Both continuous energy-restricted diet and intermittent fasting diet resulted improvement on body shape indexes and a significant decrease in weight, waist circumference, BMI, body fat, visceral fat area and skeletal muscle(P<0.01)at 8 weeks. Both groups experienced improvements in biochemical outcomes and metabolic indicators at 8 weeks. A significant reduction in TC, AST, ALT, GGT, ALP, FINS and HOMA-IR(P<0.01 or P<0.05)were observed in continuous energy-restricted diet group. And a significant decline in TC, LDL, HDL, AST, ALT, GGT, ALP, FINS and HOMA-IR were observed in intermittent fasting diet group(P<0.01 or P<0.05). HDL was found significantly reduced in intermittent fasting diet group as compared with continuous energy-restricted diet group(P<0.01) at 8 weeks, however, there were no difference in weight loss, waist circumference, BMI, body fat, visceral fat area and other metabolic indicators at 8 weeks(P>0.05). Conclusion Both intermittent fasting diet and continuous energy-restricted diet have a similar effect on weight loss and metabolic indexes like blood glucose, HOMA-IR and blood lipid, but intermittent fasting diet can more significantly decrease HDL level.

Objective:In the context of China′s increasing standardized management requirements of clinical research, this article aims to explore the management methods of investigator-initiated trials in the new period, to provide possible reference for other medical institutions dedicated to clinical research.Methods:According to the requirements set forth by the＂Administrative Measures for Investigator-Initiated Trials in Medical and Health Institutions (Trial)", combined with the hospital management practice, experiences regarding the research management system construction and implementation, management system construction and its implementation effects are summarized and analyzed.Results:By exploring and summarizing the connotation of high-quality clinical research under the New Policy, tailored clinical research management system in our hospital was developed and implemented. And the hospital′s clinical research capability and level have been greatly improved, which enhancing the hospital academic influence, as well as its competence for serving the development of national and regional clinical research.Conclusions:Along with the rapid progress of clinical research, hospitals need to assure the compliance of national laws and regulations, and develop appropriate and applicable institutional management measures to empower the conduct of high quality clinical research.

Background and objective Isoliquiritigenin(ISL)is an important pharmacological constituent of Glycyrrhiza glabra,which possesses a range of physiological and pharmacological activities,as well as significant antitumor ac-tivity,and can be used as a potential drug for targeted cancer therapy.LINC01503 is an oncogene,which has been closely asso-ciated with the malignant biological processes of many cancers.The aim of this study was to investigate the effects of ISL on the proliferation,apoptosis,invasion and migration oflung squamous carcinoma cells by regulating LINC01503.Methods Plasma was collected from lung squamous carcinoma patients and healthy individuals treated at Tangshan People's Hospital from Janu-ary 2021 to December 2022.The expression of LINC01503 in lung squamous carcinoma plasma,tissues and cells was detected by real-time quantitative fluorescence polymerase chain reaction(qRT-PCR).Lung squamous carcinoma cells were treated with different concentrations of ISL for 24 h,and LINC01503 expression was detected by qRT-PCR.The cells were treated in groups:si-NC group,si-LINC01503 group,DMSO(0.1％dimethyl sulfone)group,ISL group,pc DNA3.1(+)-NC group,pc DNA3.1(+)-LINC01503 group,ISL+pc DNA3.1(+)-NC group and ISL+pc DNA3.1(+)-LINC01503 groups.CCK-8 assay,clone formation assay,flow cytometry,Transwell assay and scratch assay were used to explore the effect of LINC01503 on the functional phenotype of lung squamous carcinoma cells.Results Fluorescence in situ hybridization results showed that the average fluorescence intensity of LINC01503 in tissue microarrays of lung squamous carcinoma patients was higher than that in paracancerous tissues(P＜0.05).The expression of LINC01503 in the plasma of patients with lung squamous carcinoma was higher than that in the plasma of healthy individuals(P＜0.05).Knockdown of LINC01503 inhibited the proliferation,invasion and migration of lung squamous carcinoma cells and promoted apoptosis(P＜0.05).ISL inhibited the proliferation,invasion,migration and promoted apoptosis of lung squamous carcinoma cells(P＜0.05).Overexpression of LINC01503 followed by intervention with ISL reversed the promotional effect of overexpression of LINC01503 on the proliferation,invasion and migration of lung squamous carcinoma cells as well as the inhibitory effect on apoptosis(P＜0.05).Conclusion LINC01503 was highly expressed in lung squamous carcinoma,and LINC01503 could promote the proliferation,invasion and migra-tion of lung squamous carcinoma cells and inhibit the apoptosis,ISL could inhibit the proliferation,invasion and migration of lung squamous carcinoma cells and promote apoptosis of lung squamous carcinoma cells by regulating the expression of LINC01503.

Objective:To investigate the prospective association of sleep duration with the development of chronic obstructive pulmonary disease (COPD) in adults in Suzhou.Methods:The study used the data of 53 269 participants aged 30-79 years recruited in the baseline survey from 2004 to 2008 and the follow-up until December 31, 2017 of China Kadoorie Biobank (CKB) conducted in Wuzhong District, Suzhou. After excluding participants with airflow limitation, self-reported chronic bronchitis/emphysema/coronary heart disease history at the baseline survey and abnormal or incomplete data, a total of 45 336 participants were included in the final analysis. The association between daily sleep duration and the risk for developing COPD was analyzed by using a Cox proportional hazard regression model, and the hazard ratio ( HR) values and their 95% CI were calculated. The analysis was stratified by age, gender and lifestyle factors, and cross-analysis was conducted according to smoking status and daily sleep duration. Results:The median follow-up time was 11.12 years, with a total of 515 COPD diagnoses in the follow-up. After adjusting for potential confounders, multifactorial Cox proportional hazard regression analysis showed that daily sleep duration ≥10 hours was associated with higher risk for developing COPD ( HR=1.42, 95% CI: 1.03-1.97). The cross analysis showed that excessive daily sleep duration increased the risk for COPD in smokers ( HR=2.49, 95% CI: 1.35-4.59, interaction P<0.001). Conclusion:Longer daily sleep duration (≥10 hours) might increase the risk for COPD in adults in Suzhou, especially in smokers.