ABSTRACT
[ Abstract] Objective To investigate the protective effect of withaferin A (WA) against high fat diet induced obesity and its associated mechanism. Methods C57BL / 6 J mice at 8-week of age were divided into two groups. The mice were fed with high fat diet (HFD) and were given an intraperitoneal injection of WA or DMSO (solvent control) . The body weight and food intake of the mice were monitored. One week later, inguinal white adipose tissue (iWAT), interscapular brown adipose tissue (BAT), epididymal white adipose tissue (eWAT) and retroperitoneal white adipose tissue (rWAT) were collected and weighed. Expression levels of the genes associated with white adipose browning were detected in iWAT. HE staining was applied to observe the morphological changes of iWAT. Results The data showed that body weight and fat weight in WA group were significantly lower than those in the control group, and the food intake was not changed significantly. Real-time PCR analysis showed that the expression level of browning related genes in iWAT of the WA group was significantly increased. The result from Western blotting analysis showed that the protein levels of uncoupling protein 1 (UCP1) and peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC1α) increased significantly in iWAT of the WA group. The typical morphological change of adipose browning, such as the multilocular adipocytes was observed in inguinal white adipose tissue of the mice treated with WA by using HE staining and mmunofluorescence assay. Conclusion Taken together, these observations indicate that withaferin A can protect the mice from high fat diet induced obesity by promoting white adipose tissue browning.
ABSTRACT
Objective To analyze the epidemiological characteristics of aggregation outbreaks of pulmonary tuberculosis (TB) in a private middle school in Minhang District of Shanghai.Methods Symptom and radiographic screening were performed on the students of Grade 3 in this senior high school.Epidemiological survey,sputum smear,culture and molecular epidemiological examination were conducted on suspected patients.Whole genome sequencing was completed on positive strains.Results In the screening of 49 close contacts with one TB patient (index case) in the school,a total of 10 patients with pulmonary TB were diagnosed,of which 3 cases were positive for culture.Another case was diagnosed and positive for culture after expanding the scope of screening.The genotype of the isolated strains from index case and the 4 patients positive for culture was identical to that of the first case of the classoneyear before,suggesting the transmission within the grade of Senior Three.Conclusions This is an aggregation outbreak that may be attributable to the first patient with positive bacteria.Therefore,timely diagnosis and effective treatment of pulmonary TB patients,as well as timely screening of close contacts with pulmonary TB patients are significant to control potential outbreaks in schools.
ABSTRACT
Objective To analyze the epidemiological characteristics of aggregation outbreaks of pulmonary tuberculosis (TB) in a private middle school in Minhang District of Shanghai.Methods Symptom and radiographic screening were performed on the students of Grade 3 in this senior high school.Epidemiological survey,sputum smear,culture and molecular epidemiological examination were conducted on suspected patients.Whole genome sequencing was completed on positive strains.Results In the screening of 49 close contacts with one TB patient (index case) in the school,a total of 10 patients with pulmonary TB were diagnosed,of which 3 cases were positive for culture.Another case was diagnosed and positive for culture after expanding the scope of screening.The genotype of the isolated strains from index case and the 4 patients positive for culture was identical to that of the first case of the classoneyear before,suggesting the transmission within the grade of Senior Three.Conclusions This is an aggregation outbreak that may be attributable to the first patient with positive bacteria.Therefore,timely diagnosis and effective treatment of pulmonary TB patients,as well as timely screening of close contacts with pulmonary TB patients are significant to control potential outbreaks in schools.