1.Role of nitric oxide in the development of glomerular ischemia reperfusion injury in rats
Xinliang WANG ; Xinying WANG ; Peiwei WANG ; Hongjuan LI ; Shansheng HUANG
Chinese Journal of Pathophysiology 2000;0(11):-
AIM: To investigate the effects of nitric oxide on ultrastructure and anionic sites of glomerular in renal ischemia reperfusion injured(I-RI) rats.METHODS: Animals were divided randomly into five groups:(1) sham group(n=6);(2) I-RI group(n=6),0.3 mL normal saline was injected via venae lingualis 20 min before ischemia;(3) SNP+I-RI group(n=6),2.5 ?g/kg sodium nitroprusside(SNP) was injected via venae lingualis 20 min before ischemia;(4) AG+I-RI group(n=6),10 mg/kg aminoguanidine(AG) was injected via venae lingualis 20 min before ischemia;(5) L-NNA+I-RI group(n=6),10 mg/kg N~?-nitro-L-arginine(L-NNA) was injected via venae lingualis 20 min before ischemia.Anionic sites of glomerular were studied with a cationic probe-polyethyleneimine(PEI) and ultrastructure was observed under electron microscope in renal I-RI rats.RESULTS:(1) Ultrastructure of glomerular was normal and anionic sites(AS) was located clearly in lamina rare externa of GBM in sham rats.The PEI particles arranged regularly in line(19.3?1.7/(1 000 nm)) under electronic microscope.Obvious foot processes derangement and effacement were observed and the AS number in GBM of I-RI group was fewer(16.6?1.0/(1 000 nm),P0.05).CONCLUSION: Foot process effacement and reduction of anionic sites were present in glomerular filtration membrane in renal I-RI rats.NO aggravated those injuries,indicating that NO plays a role in the ultrastructure damages of glomerular filtration membrane in I-RI rats.
2.Correlation between the expression of gastrncolic omentum visfatin mRNA and gestationul diabetes mellitus
Yan LIANG ; Xianming XU ; Hongsheng WANG ; Peiwei WANG
Chinese Journal of Obstetrics and Gynecology 2008;43(11):824-827
Objective To investigate the relationship between different expression of gastrocolic omentum visfatin (VF) mRNA and gestational diabetes mellitus (GDM) in late trimester pregnancy. Methods One hundred cases of pregnant women in late trimester were divided into two groups, including 45 GDM women( GDM group) and 55 normal glucose tolerance women( NGT group). Semi-quantitative RT-PCR was applied to determine the expression of VF mRNA in gastrocolie omentum. Fast-blood glucose, insulin,cholesterol(TC) and triglyceride (TG) levels were measured. The progestational body mass index(BMI) and the homeostasis model assessment(HOMA) insulin resistance(IR) were calculated in these cases. Results The expression of gastrocolic omentum VF mRNA in GDM group and NGT group were 0.8 ±0.4,0.5±0.3. Fast-blood glucose levels were(4.12±0.14),(3.65±0.13) mmol/L. Insulin levels were (72±5) ,(61±5) pmo]/L TG levels were (5.6±0.3), (3.8±0.3) mmol/L TC levels were(5.6±0.9 ), (3.9±0.3) mmol/L HOMA-IR were 12.5±5.9,9.5±0.8. The progestatianal BMIs were(22.6±0.8), (20.9±0.4) kg/m2. All the indices in the GDM group were significantly higher than NGT group (P<0.05). Furthermore, the expression of gastrocolic omentum VF mRNA had a positive correlation with BMI (r=0.32, P<0.01), but had no association with insulin resistance or metabolic parameters. Conclusion The experiment demonstrates that different expression of VF mRNA has a strong correlation with GDM and obesity.
3.Effect of repetitive transcranial magnetic stimulation on quality of life in patients with mild to moderate Alzheimer disease
Xiuling WU ; Guangdong CHEN ; Qing WANG ; Peiwei SHAN ; Deguo JIANG
Chinese Journal of Postgraduates of Medicine 2021;44(2):97-101
Objective:To investigate the effects of repetitive transcranial magnetic stimulation (rTMS) on behavioral and psychological symptoms and quality of life in patients with mild to moderate Alzheimer disease (AD).Methods:Forty mild and moderate patients who met the diagnostic criteria of AD in the tenth edition of the International Classification of Diseases from May 2017 to December 2018 in the Seventh People′s Hospital of Wenzhou City were selected and divided into the control group (20 cases) and the rTMS group (20 cases) according to random number list. The control group was treated with basic treatment while the rTMS group was treated with rTMS on the basis of the basic treatment. The scores of AD assessment scale-cognitive section (ADAS-cog), mini mental state examination (MMSE), neuropsychiatric inventory (NPI), activity daily living (ADL), and quality of life in AD (QOL-AD) were observed and compared between the two groups before and after treatment.Results:There were no significant differences in ADAS-cog, MMSE, NPI, ADL, and QOL-AD scores between the rTMS group and the control group before treatment ( P>0.05). After treatment, the MMSE, ADL, and QOL-AD scores of the rTMS group were significantly higher than those of the control group: (22.80 ± 3.83) scores vs.(20.30 ± 5.49) scores, (63.05 ± 17.24) scores vs. (54.15 ± 9.20) scpres, (37.55 ± 7.94) scores vs. (31.00 ± 11.45) scores; the ADAS-cog and NPI scores were significantly lower: (18.45 ± 4.16) scores vs.(22.15 ± 5.01) scores, (57.2 ± 16.25) scores vs. (72.65 ± 39.37) scores, (27.15 ± 7.53) scores vs. (34.65 ± 14.91) scores, and there were significantly differences ( P<0.05). At the same time, the MMSE, ADL, and QOL-AD scores of the rTMS group were significantly higher than those before treatment, the ADAS-cog and NPI scores were significantly lower, and the difference was statistically significant ( P<0.05). Conclusions:rTMS can effectively improve the behavioral and psychological symptoms of patients with mild to moderate AD and significantly improve the quality of life.
4.Exposure to and health effects of bisphenols: a review
Yang HU ; Xiaofeng WANG ; Zhijian CHEN ; Peiwei XU ; Xiaoming LOU
Journal of Preventive Medicine 2022;34(8):799-802
Abstract
Bisphenols (BPs), which are mainly used in the production of polycarbonates and epoxy resins, are common endocrine disruptors (EDCs) in natural environments. Human mainly exposes to BPs via ingestion and skin. Previous studies have deteted BPs in human urine, serum, and milk samples, and children and pregnant women have a high level of exposure to to BPs. Based on international and national publications pertaining to BPs since 2009, this review describes the exposure to BPs in human urine, serum, and milk and summarizes neuroendocrine dysfunctions, oxidative stress injury and epigenetics changes caused by BPs, so as to provide insights into reducing the exposure to and health risk of BPs.
5.The exposure levels of phthalic acid esters in population: a review
LIU Jing ; XU Peiwei ; CHEN Zhijian ; SHAO Bin ; SHI Changmiao ; LI Sheng ; WANG Xiaofeng
Journal of Preventive Medicine 2021;33(9):906-909
Phthalic acid esters (PAEs) are commonly used plasticizers and solvents. Human body is exposed and absorbed mainly through diet, skin and air inhalation. The biological samples such as urine, blood, saliva, semen and breast milk generally contain PAEs and their metabolites, but the concentrations of PAEs metabolites vary in different samples. In the general population, the levels of PAEs are higher in children than in adults, and higher in women than in men; the levels of PAEs are higher in the occupational population than in the general population. In this paper, the research of PAEs related human biomonitoring in the general population and occupational population at home and abroad is reviewed, so as to provide the basis for reducing the exposure of PAEs and related health risk.
6.Research progress on environmental concentration levels,population exposure and health risk of triclosan
XIE Huasen ; SONG Yang ; WANG Xiaofeng ; CHEN Zhijian ; XU Peiwei ; LOU Xiaoming
Journal of Preventive Medicine 2021;33(10):1013-1016
Triclosan, widely used in various personal care products, is one of the most common environmental endocrine disruptors in our life. It can be detected from water, soil and dust, and its environmental exposure level increased with consumption. Human body are exposed to triclosan through food and water, but the evidence that triclosan exposure leads to adverse health effects is not sufficient. This paper summarizes the progress of studies related to environmental concentration, population exposure and health risks of triclosan in recent years.
7.Simulation calculation of wall correction factor of 192Ir gamma-ray spherical graphite cavity ionization chamber
Shijie ZHI ; Ji WANG ; Jinjie WU ; Peiwei WANG ; Shiwei REN
Chinese Journal of Radiological Medicine and Protection 2022;42(9):706-710
Objective:To study the correction factor of the chamber wall of the reference air kerma rate reference ionization chamber (NIM-Ir-SG-100 type) for 192Ir radioactive source. Methods:The photon spectrum and ionization chamber wall correction factor of the radioactive source housing and irradiator model are calculated by Monte Carlo code. And then the photon energy, wall thickness and ionization chamber diameter, which affect the result of the chamber wall correction factor, are simulated.Results:After calculation, the simulation result of the correction factor of spherical graphite cavity ionization chamber wall was 1.037 7. Controlling a single variable, photon energy (0.3-1.3 MeV), wall thickness (0.2-0.5 cm), inner diameter (0.5 -15 cm), the maximum deviations of wall correction result were 1.62%, 3.30% and 2.86%, respectively.Conclusions:The self-made spherical graphite cavity ionization chamber has good performance, and the corrected kwall value of the chamber wall is within a reasonable range. The completion of the chamber wall correction factor is an important step to measure the reference air kerma rate of the 192Ir radioactive source and establish the measurement benchmark.
8.Correlation Between Peripheral Blood Biomarkers and Immune Checkpoint Inhibitors in Treatment of Advanced Esophageal Cancer
Peiwei WANG ; Yiming WENG ; Xue CUI ; Min PENG
Cancer Research on Prevention and Treatment 2023;50(1):58-62
Objective To explore the effect of peripheral blood markers on the efficacy and prognosis of patients with advanced esophageal cancer treated with immune checkpoint inhibitors (ICIs). Methods The case data of 61 patients with advanced esophageal cancer who met the inclusion criteria were collected. Data on clinical indicators and peripheral blood markers as well as objective response rate (ORR) and progression-free-survival (PFS) were obtained. Results The median PFS of the included patients was 7.10 months (95%
9.Effect of PD1-TCF1+CD8+ Stem-like Memory T Cells on Immunotherapy Prognosis and Tertiary Lymphoid Structures in Tumors
Xue CUI ; Yiming WENG ; Peiwei WANG ; Min PENG
Cancer Research on Prevention and Treatment 2023;50(2):146-150
Objective To investigate the impact of PD1-TCF1+CD8+ stem-like memory T cells on immunotherapy prognosis and tertiary lymphoid structure in tumors. Methods Pathological tissue sections were collected from 33 patients treated with immunotherapy, 18 cases of NSCLC and 15 cases of ESCC. The expression of PD1-TCF1+CD8+T cells was detected through quantitative analysis by multiplex immunofluorescence. Survival curves were described by the Kaplan-Meier method. Pearson's correlation test was used for correlation analysis. Results The high levels of PD1-TCF1+CD8+T cells had a better PFS in NSCLC and ESCC cohorts. In the NSCLC cohort, high levels of PD1-TCF1+CD8+ T cells were significantly and positively correlated with the number (
10.Surgical care experiences for 3 cases of obtaining the donor liver in the uninterrupted blood flow way
Qingbing ZENG ; Fang ZHOU ; Qiang ZHAO ; Yi GONG ; Hongqin SONG ; Peiwei WANG ; Peng LUO ; Yaoye WU
Modern Clinical Nursing 2017;16(9):44-47
Objective To summarize the surgery nursing cooperation points of liver procurement of brain death contributions (DBD) donor in the uninterrupted blood flow way . Methods Complete the following preoperativepreparation such as personnel,brain death donation donor,environment ,surgical content,multiple organ repair system and other related equipments;intraoperative preparation includes surgical instruments and related equipments ,assisting intubation of arteria lienalis ,portal vein and the choledochus and the organ procurement . Result About 3 cases of donor liver procurement were successfully implemented in the interrupt blood flow way, operation time was 3~4 h,bleeding was 200~400 mL,an average of 300 mL. Conclusions Uninterrupted flow liver transplantation can protect liver function to the greatest extent , thus greatly avoids the common complication of organ transplantation.The tacit understanding surgery cooperation improves the rate of surgery successfully.