This study aims to investigate the mechanisms underlying the effects of the combined ac-tion of high-fat diet-induced obesity and the aflatoxin B1(AFB1)on hepatic oxidative stress and inflammatory responses.Thirty-six rats of similar weight and 4 weeks old were randomly divided into 4 groups,with 9 rats in each group:the blank control group(basal diet),the AFB1 group(0.4 mg/kg AFB1+basal diet),the HFD group(high-fat diet),and the HFD+AFB1 group(high-fat diet+0.4 mg/kg AFB1).Histological changes and lipid deposition were observed via hematox-ylin-eosin(HE)staining and Oil Red O staining.Levels of oxidative stress and inflammation-relat-ed factors were measured using commercial assay kits.The relative protein expression levels of factors involved in the Nrf2-Keap1 signaling pathway were assessed by Western blot analysis.The HE staining results showed that in the AFB1 group,the liver cells exhibited widespread watery de-generation,with shrunk and ruptured nuclei,inflammatory cells infiltration,and increased fibrosis.In the HFD group,liver cell fatty degeneration was observed,with cytoplasmic lipid droplet infil-tration.In the portal area,liver fibrosis was seen,with liver cell necrosis and inflammatory cell in-filtration in the fibrotic area,accompanied by lipofuscous granules.When HFD was applied to the AFB1 group,the abnormal state of liver interstitial and interstitial spaces was further aggravated,and a large number of lipid droplets appeared.The Oil Red O staining results showed that there were large numbers of dark red lipid droplets in the liver tissue of the HFD group,which were fused in strands.In the AFB1 group,lipid droplets could also be observed in the liver tissue of rats,but the number and degree were significantly less than those in the HFD group.The number and degree of red lipid droplets in the liver tissue of rats in the HFD+AFB1 group were higher than those in the AFB1 group and the HFD group.HFD exacerbated AFB1-induced oxidative stress by elevating ROS,MDA levels,and decreasing the expression of antioxidant stress factors such as CAT,SOD,Nrf2,HO-1,NQO1,and GCLC.Furthermore,the combined effect of HFD and AFB1 further significantly increased the levels of pro-inflammatory cytokines IL-2,IL-6,TNF-α,and IL-1β in the body.In summary,HFD treatment significantly exacerbated liver oxidative stress and in-flammatory responses in rats exposed to AFB1 through the Nrf2-keap1 signaling pathway.

This study aims to investigate the mechanisms underlying the effects of the combined ac-tion of high-fat diet-induced obesity and the aflatoxin B1(AFB1)on hepatic oxidative stress and inflammatory responses.Thirty-six rats of similar weight and 4 weeks old were randomly divided into 4 groups,with 9 rats in each group:the blank control group(basal diet),the AFB1 group(0.4 mg/kg AFB1+basal diet),the HFD group(high-fat diet),and the HFD+AFB1 group(high-fat diet+0.4 mg/kg AFB1).Histological changes and lipid deposition were observed via hematox-ylin-eosin(HE)staining and Oil Red O staining.Levels of oxidative stress and inflammation-relat-ed factors were measured using commercial assay kits.The relative protein expression levels of factors involved in the Nrf2-Keap1 signaling pathway were assessed by Western blot analysis.The HE staining results showed that in the AFB1 group,the liver cells exhibited widespread watery de-generation,with shrunk and ruptured nuclei,inflammatory cells infiltration,and increased fibrosis.In the HFD group,liver cell fatty degeneration was observed,with cytoplasmic lipid droplet infil-tration.In the portal area,liver fibrosis was seen,with liver cell necrosis and inflammatory cell in-filtration in the fibrotic area,accompanied by lipofuscous granules.When HFD was applied to the AFB1 group,the abnormal state of liver interstitial and interstitial spaces was further aggravated,and a large number of lipid droplets appeared.The Oil Red O staining results showed that there were large numbers of dark red lipid droplets in the liver tissue of the HFD group,which were fused in strands.In the AFB1 group,lipid droplets could also be observed in the liver tissue of rats,but the number and degree were significantly less than those in the HFD group.The number and degree of red lipid droplets in the liver tissue of rats in the HFD+AFB1 group were higher than those in the AFB1 group and the HFD group.HFD exacerbated AFB1-induced oxidative stress by elevating ROS,MDA levels,and decreasing the expression of antioxidant stress factors such as CAT,SOD,Nrf2,HO-1,NQO1,and GCLC.Furthermore,the combined effect of HFD and AFB1 further significantly increased the levels of pro-inflammatory cytokines IL-2,IL-6,TNF-α,and IL-1β in the body.In summary,HFD treatment significantly exacerbated liver oxidative stress and in-flammatory responses in rats exposed to AFB1 through the Nrf2-keap1 signaling pathway.

Objective:The aim of this study was to evaluate the safety and efficacy of prostatistic urethral lift (PUL) in treating benign prostate hyperplasia(BPH) through systematic review and Meta-analysis.Methods:A systematic literature search on CNKI, Wanfang, VIP, PubMed, Web of Science, Cochrane Library and Chinese Clinical Trial Registry to identify the relevant studies and data before September 2021. Information was extracted from each eligible article. All statistical analyses of this Meta-analyses were performed with Review Manager 5.3 and Stata 15.0 software to conduct a Meta-analysis of the symptom improvement of BPH patients before and 3 months and 12 months after PUL. The main evaluation indicators included: International Prostate Symptom Score (IPSS), maximum urinary flow rate (Q max), post-void residual (PVR), and Quality of Life Scale (QOL), Sexual Health Inventory for Men (SHIM). The complication rate of PUL was systematically evaluated. Results:A total of 12 clinical studies were included, and 850 patients accepted the PUL. The results showed that IPSS decreased significantly at both 3 and 24 months after PUL surgery ( MD = -11.77, 95% CI -12.47—-11.07, P<0.05; MD = -9.71, 95% CI-10.76—-8.66, P<0.05), Q max (ml/s) increased to a certain degree ( MD = 3.87, 95% CI 3.37—4.37, P<0.05; MD = 3.68, 95% CI 2.97—4.40, P<0.05), QOL decreased significantly ( MD=-2.57, 95% CI -2.76—-2.38, P<0.05; MD = -2.14, 95% CI -2.38—-2.91, P<0.05), SHIM score was unaffected ( P>0.05), compared with preoperative baseline data. PUL could be performed under local anesthesia, the main perioperative complications reported in the included studies were dysuria (17%±6%), hematuria (14%±5%) and pelvic pain (8%±6%), all of which were transient. Conclusions:PUL in the treatment of BPH has significant short-term and long-term efficacy with low surgical risk and complication rate, and can preserve normal ejaculation function. It is a safe and effective minimally invasive surgery, which can be used for BPH patients with intolerance to general anesthesia surgery or normal sexual function demand.

Objective:To analyze the detection of gallbladder polyps among shift nurses in Shengjing Hospital of China Medical University in physical examination and its related influencing factors, so as to provide scientific basis for shift nurses to prevent gallbladder polyps.Methods:A total of 1 119 shift nurses who had physical examination in Shengjing Hospital of China Medical University from January 1 to March 31, 2018 were selected. The patients with gallbladder polyps diagnosed by ultrasound were included in the case group, and those without gallbladder polyps were taken as the control group. Age, gender, body mass index (BMI), night shift frequency, education level, Department, meal regularity, drinking history, smoking history, serum triglyceride, serum total cholesterol, hepatitis B surface antigen, serum alanine aminotransferase and serum aspartate aminotransferase levels were compared between the two groups.Results:Univariate analysis showed that age ( P<0.001), gender ( P=0.028), BMI ( P=0.005), night shift frequency ( P=0.021) were the factors with statistically significant difference between the case group and the control group. There were no statistically significant differences between the case group and the control group in terms of education level, department, dining regularity, drinking history, smoking history, hepatitis B surface antigen, serum triacylglycerol, serum total cholesterol, serum alanine aminotransferase, serum aspartate aminotransferase levels ( P>0.05). Logistic regression analysis showed that age, BMI and night shift frequency were the influencing factors in the regression equation ( P<0.05). Conclusion:Age, BMI and night shift frequency may be related risk factors of gallbladder polyps in shift nurses.

Objective To obtain myoclonic epilepsy with ragged-red fibers (MERRF)-specific cardiomyocytes by the differentiation in vitro of inducing pluripotent stem cells (iPSC) derived from a MERRF patient and evaluate the application of the prepared cardiomyocytes in construction of MERRF syndrome model.Methods The patient-derived iPSCs and H9 embryonic stem (ES) cells,the control cell line,were unidirectionally differentiated into cardiomyocytes n in vitro.The obtained cardiomyocytes were identified and validated by detecting the presence of cardiomyocyte-specific markers using immunofluorescence staining and RT-PCR.The beating frequencies were recorded to compare the functional evaluation for the two groups of cardiomyocyte.Results Both the patient-derived iPSC and H9 ES cells were differentiated into cardiomyocytes successfully.The average beating frequencies of MERRF-induced cardiomyocytes (iCMs) were 13,24,15 and 18 times/min on the day 10,13,15 and 16 during the cell differentiation process.The average beating frequencies of H9-iCMs were 80,96,120 and 120 times/min,respectively.The beating ability of iPSC-differentiated cardiomyocytes was significantly lower than that of corresponding control (all P ＜ 0.05).Conclusion The patient-derived iPSCs may differentiated into cardiomyocytes.Based on the functional evaluation for these cardiomyocytes,the model for MERRF syndrome with mitochondrial mutations was generated and characterized in vitro.