1.Secretory status of pancreas and pathogenesis of insulin resistance in rat with nonalcoholic fatty liver disease
Medical Journal of Chinese People's Liberation Army 1981;0(04):-
Objective Rats with nonalcoholic fatty liver disease (NAFLD) were used to investigate the secretory state of pancreas and the expression of insulin receptor (IR). Methods NAFLD rat model was reproduced, and then the structure of pancreatic tissue, secretory states of ? and ? cells (serum, tissue) and the expression of IR were examined and determined by means of HE staining, ELISA, and immunohistochemistry. Results In all experimental groups, the structure of pancreatic tissue showed no obvious change; the blood sugar level tended to rise. The insulin level in serum began to elevate obviously at 4th week (P≤0.01), while the insulin content in tissue began to increase at 6th week (P≤0.01), and distributed mainly in the middle part of the pancreas with a tendency of elevation along with the time. The content of glucagon in pancreatic tissue began to increase at 8th week (P≤0.01), and reached the peak at 12th week. The expression of IR in tissue began to decrease at 6th week (P≤0.01), and then tended to be stable after 8th week. Conclusions In NAFLD, there was changes in secretory state of pancreas with the accompaniment of insulin resistance. There was a tendency of elevation of levels of insulin both in serum and pancreatic tissue, but the time of expression was different. The expression of glucagen shows an increase tendency, while the decrease of IR might be the crucial cause of insulin resistance in NAFLD.
2.Studies on the changes in serum endotoxin level in 63 patients with primary biliary cirrhosis
Suxian ZHAO ; Jingmin ZHAO ; Panyong MAO
Medical Journal of Chinese People's Liberation Army 2001;0(11):-
Objective To study the changes in serum endotoxin level of the patients with primary biliary cirrhosis (PBC) and the relationship between endotoxin and serum biochemical parameters. Methods Clinical data of 63 cases PBC patients confirmed by liver puncture biopsy were retrospectively studied. The clinical features, results of laboratory tests, pathological findings of all the 63 patients were analyzed. Endotoxin level was determined by limulus amebocyte lysate test in the serum obtained from the 63 cases of patients with primary biliary cirrhosis, and then compared with that of 30 healthy individuals. Results The sex ratio (male to female) of PBC patients was 1 to 8, and the mean age was 43.8 years. The prevalent complaints were jaundice and fatigue. 70.3% patients showed AMA positive. The levels of ?-glutamyltransferase (r-GGT), alkaline phosphatase (ALP) and bilirubin in the serum were markedly elevated in the majority of the patients. Compared with the early stage, the levels of ALT and AST declined slightly during the advanced stage (P
3.The effect of release and debridement with arthroscopy in the treatment of elbow malfunction
Jingmin HUANG ; Li ZHAO ; Jianjun TANG
Chinese Journal of Orthopaedics 1996;0(09):-
Objective To explore the effect of elbow release and debridment with arthroscopy for elbow malfunction. Methods The study was carried out on 15 patients (male 11, female 4; age 21-63 years old, average 40.1 years old) with the use of arthroscopy to brisement accretion and articular capsule from August 2001 to December 2003. The mean course was 55.2 months (range, 8-24 months). The flexion angle of joint preopration was 15?-60?, average 30.4?, the extension angle was -80?--20?, average -51.2?. The diagnosis was osteophyma and liberum in 4. The old fracture of radius capitulum was in 2; the old fracture of ulnar olecranon in 2; the old fracture of condyle of humerus in 3; degeneration in 4. The brachial plexus anesthesia,the elbow hung to traction, interna and extra-pathway, to cut synovium and accretion fibers with shver, removal liberum and milling osteophyma, meanwhile brisement articular capsule. Pathology manifestation in arthroscopy: there were a lot hyperemia synovium and fiber accretion. There was cartilage exfoliation in 8, hyperplasy and liberum in 5, ossification of cicatricle in 2. The motion range of elbow was reexamined, if the extension function was restricted, release was performed on anterior soft tissue and capsule. If the flexion function was restricted, release was carried out on posterior capsule via posterior straight approach(3 cm supra point of olecranon). Results All patients recovered daily life and occupation postoperative 7 to 14 days. Transient ulnar nerve paralysis occurred postoperatively in one case, which recovered three months later. There were no blood vessel and nerve injury. The mean follow-up period was 14.1 months (range, 7-20 months). At the final follow-up, the flexion of joint post operation was 70?-120?, to improve average 60.5?; the extension of joint post operation was -20?--5?, to improve average 37.6?. In accordance with HSS scoring system, excellent 7, good 5, fail 3. Conclusion Using of arthroscopy to release elbow joint have many advantages such as less trauma, quick recovery and less sequela. The application in release with arthroscopy is a good way for elbow malfunction.
4.SIGNIFICANCE OF IMMUNOCYTES IN PATHOGENESIS OF AUTOIMMUNE HEPATITIS
Wangxia LIU ; Jingmin ZHAO ; Fushen WANG
Medical Journal of Chinese People's Liberation Army 1983;0(02):-
To study the significance of immunocytes in pathogenesis of autoimmune hepatitis (AIH), 36 cases of patients with AIH were analyzed. Dendritic cell (DC) and lymphocytes (LC) in the liver tissues were observed with a panel of DC markers and monoclonal antibodies of lymphocyte by the method of immunohistochemistry, and DC was isolated and incubated from peripheral blood from 8 patients who were selected from these 36 patients. The expression of surface markers on DC and lymphocytes and their numbers were detected by using the flow cytometric analysis. The results showed that the expression levels of HLA DR were much higher than those in control groups ( P
6.Clinical and pathological studies on the autoimmune hepatitis and primary biliary cirrhosis overlap syndrome
Yanling SUN ; Jingmin ZHAO ; Xin MENG
Medical Journal of Chinese People's Liberation Army 2001;0(07):-
Objective To explore the clinical and pathological features of the autoimmune hepatitis (AIH) and primary biliary cirrhosis (PBC) overlap syndrome (AIH-PBC overlap syndrome). Methods The clinical data and liver biopsy specimens from 17 cases of the AIH-PBC overlap syndrome were analyzed and compared with 117 cases of AIH and 85 cases of PBC. The pathological features were as analyzed by histological observation and immunohistochemical staining for CK19, CD3, CD4, CD8, CD20, CD25, CD57 and CD68 in the biopsy liver tissues. Results Of the cases of autoimmune liver disease in this study, 8.4% were diagnosed as AIH-PBC overlap syndrome based on clinical, biochemical, serological and pathological examinations. Among the overlap syndrome cases, the females were in predominance (male∶female was 1∶8.5), and the median age of the patients presenting the clinical onset signs was 39.3 years, and the serological double-positive autoantibodies of ANA and AMA-M2 occupied 52.9%(9/17). Serum levels of ALT, ALP, ?-Glo, AST, TBIL, IgG and IgM were higher in patients with overlap syndrome than those in patients with AIH or PBC, respectively. The pathological findings in the biopsy liver tissues from the patients with overlap syndrome included moderate to severe interface hepatitis with plasma cell predominated mixed-inflammatory cells infiltration in hepatic and portal tracts, as well as the damage and obvious reactive proliferation of small bile ducts. Meanwhile, the amounts of CD3, CD4, CD8, CD20, CD25, CD57 and CD68 positive mononuclear cells increased in the overlap syndrome liver tissues compared with those in single PBC or AIH cases. Conclusion AIH-PBC overlap syndrome is not frequent (8.4%) in this study, but exist among autoimmune liver diseases in China. This overlap syndrome presented both clinical and pathological features of AIH and PBC, and cellular immune mediated injuries might be pivotal role in pathogenesis.
7.Internet addiction among primary and middle school students in Jiaxing City
Jie LING ; Jingmin ZHANG ; Linghui ZHAO
Journal of Preventive Medicine 2022;34(12):1207-1211
Objective:
To investigate the prevalence of Internet addiction among primary and middle school students in Jiaxing City, so as to provide insights into the development of interventions for Internet addiction among primary and middle school students.
Methods:
A total of 1 701 students were sampled from two primary schools, two junior high schools, two senior high schools and two vocational high schools in Jiaxing City during the period between September and October, 2021, using the stratified cluster sampling method. The Internet addiction status was evaluated using the Internet Addiction Test, and the depression status was tested using the Patient Health Questionnaire-9 (PHQ-9), while the anxiety was assessed with the Generalized Anxiety Disorder Scale (GAD-7).
Results:
The participants included 783 men (46.03%) and 918 women (53.97%), and 873 rural students (51.32%) and 828 urban students (48.68%). The overall detection of Internet addiction was 6.53% among the participants, and the prevalence of moderate and severe Internet addiction was 5.88% and 0.65%, respectively. A higher prevalence of Internet addiction was detected in rural students (χ2=4.695, P<0.05), junior high school students (χ2=65.337, P<0.05), students with a poor relationship with family members (χ2=39.231, P<0.05), teachers (χ2=28.799, P<0.05) and classmates (χ2=36.341, P<0.05). The prevalence of depressive and anxiety symptoms was 23.81% and 21.52%, respectively, and the prevalence rates of depressive and anxiety symptoms were both higher among primary and middle school students with Internet addiction (68.47% and 56.76%) than among those without Internet addiction (χ2=130.556 and 87.327, both P<0.05).
Conclusion
The prevalence of Internet addiction is high among primary and middle school students living in rural areas and with poor interpersonal relationships in Jiaxing City. Students with Internet addiction are more likely to develop depressive and anxiety symptoms.
8.Effects of C3aR agonists on the phenotype of mouse primary renal tubular epithelial cell
Zhicheng ZHANG ; Wenjin ZHAO ; Jingmin ZHENG
Journal of Medical Postgraduates 2017;30(1):14-20
Objective The key points in the epithelial-mesenchymal transition ( EMT) procedure include the downregula-tion of epithelial protein (E cadherin) and the upregulation of cell activity and cell matrix generation .The aim of this study was to es-tablish a method for primary culture and identification of mouse renal tubular epithelial cells and to explore whether the activation of C3aR can induce epithelial-to-mesenchymal transition in mouse primary renal epithelial cells . Methods Murine renal tubular seg-ments were used for primary cell culture .Immunocytochemistry and immunofluorescence staining were used to identify the renal tubular epithelial cells.The experiment groups included control group , five different concentrations of C3aR agonist groups (0.1, 1, 100, 500, and 2000 ng/mL), and three different time-point groups.The mRNA levels of E-cadherin,α-smooth muscle actin (SMA) and colla-gen I in renal tubular epithelial cells were detected by Real-time PCR; the protein of E-cadherin, α-SMA were detected by Western blot.The cytoskeleton of epithelial cells was observed by phalloidin staining . Results Compared with the control group , the protein expression of E-cadherin deceased (0.950±0.901 vs 0.650±0.221) and the expression of α-SMA (1.380±0.062 vs 1.600±0.103) and collagen I increased in C3aR agonist group (500 ng/mL, after 48 hours) (P<0.05).In addition, the association between these changes and C3aR agonists was presented in a dose-and time-dependent man-ner, respectively.The cytoskeleton staining showed that treatment of renal tubular epithelial cells with C 3aR agonists induced the formation of actin stress fibers in a time-dependent manner . Conclusion The method for primary culture and identification of mouse renal tubular epithelial cells were successfully established .The activation of C3aR could induce epithelial-to-mesenchymal transition in mouse primary renal epithelial cells , which plays an essential role in the de-velopment of renal fibrosis .Moreover , this study indicated that C 3aR may become a new therapeutic target in kidney diseases .
9.Expressions of TNF-?,TGF-?_1 and leptin in liver tissues with nonalcoholic lipoid hepatitis and their significance
Xiaohui DING ; Jingmin ZHAO ; Yanling SUN
Medical Journal of Chinese People's Liberation Army 2001;0(08):-
Objective To investigate the expressions of pivotal cytokines such as TNF-? and TGF-?_1, and leptin in human nonalcoholic lipoid hepatitis (NALH), and to explore their potential roles in the pathogenesis of NALH. Methods Liver tissue obtained from 59 patients pathologically diagnosed as nonalcoholic lipoid hepatitis and 10 healthy adult liver tissues were examined in the present study. The respective expression of TNF-?, TGF-?_1 and Leptin was qualitatively and semi-quantitatively determined at the protein expression levels by using immunohistochemical method and image analysis. Results In NALH liver tissue the expression of TNF-? appeared mainly in inflammatory cells and lining cells of liver sinusoids in zone 3, lipogranulomas and portal tract, where obvious inflammation was found. The expression was parallel to different degrees of inflammation in NALH, significant correlation was found between degree of inflammation and fibrosis and extent of expression (P
10.Pathological study of 130 cases of nonalcoholic fatty liver disease based on NASH-CRN system
Guangde ZHOU ; Jingmin ZHAO ; Xiaohui DING
Medical Journal of Chinese People's Liberation Army 1983;0(02):-
Objective To summarize the pathological features of nonalcoholic fatty liver disease(NAFLD)in China based on a histological scoring system for NAFLD designed by the Pathology Committee of NASH Clinical Research Network(NASH-CRN).Methods The specimens of liver needle biopsy from 130 patients with NAFLD were examined with light microscopy after haematoxylin eosin,reticular fiber,and Masson trichrome staining.Immunohistochemistry staining of the sections,combined with clinical data,was used to exclude non-NAFLD cases.Results Hepatic steatosis,lobular inflammation,hepatocyte ballooning and fibrosis existed extensively in 130 cases NAFLD liver tissues.Furthermore,macrovesicular steatosis predominantly located in acinar zone 3 was the main pathological feature of NAFLD,and lobular inflammation was usually mild.Hepatocyte ballooning was observed in 94.6 percent of 130 cases.Mild perisinusoidal fibrosis and periportal fibrosis were often observed in stage 1.According to the statistic analysis,hepatic steatosis was positively correlated with lobular inflammation,hepatocyte ballooning and fibrosis(r=0.587,0.488,0.374,respectively;all P value