1.Relationship between gallstones and acute pancreatitis
Chinese Journal of Pancreatology 2014;14(4):252-254
Objective To investigate the predictive factors of acute pancreatitis for patients with gallstone.Methods One hundred and eighteen patients with gallstones who were admitted to Department of Gastroenterology,People's Hospital of Wuhan University were selected,the gallbladder size,number and size of gallstones,common bile duct stones were determined by imaging study.Then the patients were grouped according to the complication of acute pancreatitis.Results Sixty-one cases of acute pancreatitis occurred out of 118 patients.The gallbladder size of 74 patients was normal,and among them 49(66.2%) developed acute pancreatitis; the gallbladder size of 44 patients was increased or decreased,and among them 12(27.3%)developed AP.Thirty-one patients had a single gallstone,and 11 (35.5%) developed AP; while 87 patients had multiple gallstones,and 50 (57.5%) was complicated with AP.Among patients with AP,11 patients had a single gallstone,and the size of the gallstone in the 8 patients (72.7%) was ≥10 mm; while 50 patients had multiple gallstones,and the size of the gallstone in the 41 patients (82.0%) was < 10 mm.Nineteen patients were complicated with common bile duct stones,and 17 (89.5%) developed AP; while 99 patients were not complicated with common bile duct stones,and 44 (44.4%) developed AP.The difference between the two groups was statistically significant (x2 =16.758,P =0.000 ; x2 =4.425,P =0.029 ; x2 =13.434,P =0.001 ; x2 =12.994,P =0.000).Conclusions Acute biliary pancreatitis is associated with gallstones.The size of gallbladder,size and number of gallstone,as well as the presence of common bile duct stones are related to the development of AP.
2.Observation of morphology and function of human parathyroid cells encapsulated by hydrogel
International Journal of Surgery 2016;43(2):85-87,封3
Objective To explore the feasibility of the hydrogel as a cell carrier for parathyroid cells.Methods Cryopreserved parathyroid cells were recovered and cultured until sufficient,then the cells were digested、centrifuged and pipetted to single-cell suspension.The chitosan solution,crosslinking agents and cell suspension were mixed to hydrogels by some ratio.After that,hydrogels covered by complete medium were incubated at 37 ℃ in constant temperature incubator.Meanwhile,the supernatant were collected for measuring the PTH level every other day and the viability and shape of cells in hydrogels was also evaluated by fluorescopy.Results Parathyroid cells were recovered and cultured successfully and the adherent cells were spindle-like.The hydrogel could be prepared at room temperature in less than 1 minutes.The fluorescent confocal microscopy showed that more than 90% of the cells in the hydrogel kept viable after 24 hours and the proportion had no significant change after 3 days.Furthermore,PTH was detected in the supernatants.Conclusion The facilely prepared inexpensive hydrogel,which can maintain normal morphlology and function of cells,is of potential application to cell transplantation therapy for hypopatathyroidism.
3.Study on correlation between postoperative coagulation function and fibrinolytic activity indexes with deep vein thrombosis in patients with traumatic fracture
International Journal of Laboratory Medicine 2017;38(16):2196-2198
Objective To investigate the correlation between the coagulation function and fibrinolytic activity with deep venous thrombosis (DVT) after traumatic fracture operation.Methods One hundred and thirty-four cases of traumatic fracture from April 2010 to May 2014 were divided into the DVT group(24 cases) and non-DVT group,and at the same time 110 healthy people were selected as the control group.The venous blood at different time points was collected for observing the levels change of prothrombin time (PT),activated partial thromboplastin time (APTT),fibrinogen (FIB),platelet aggregation rate (PAgT),dipolymer (D-D),thrombin antithrombin complex (TAT),plasminogen activity (PIg) by using appropriate methods.Results There was no difference in APTT and PT groups among the groups(P>0.05).Preoperative FIB,PAgT,D-D and TAT levels was the DVT group >non-DVT group > control group,while the level of PIg was the DVT group
4. Mechanisms of obesity-related hypertension: Recent progress
Academic Journal of Second Military Medical University 2010;31(4):442-444
Obesity is the most important risk factor of primary hypertension. Rapid increase of obesity-related hypertension has become a worldwide problem. But the specific mechanism of the condition remains to be fully understood. This paper reviews the latest literatures and tries to explain the mechanism of obesity-related hypertension from the following four aspects: hypoadiponectinemia, leptin and resistance of leptin, insulin and resistance of insulin and the activation of renin-angiotensin system(RAS).
5.Study on the changes of actin, serum albnmin, fibronectin in cardiac cells and cardiac conducting system in cases with sudden manhood death syndrome
Bin LUO ; Zhiren LUO ; Guansan WANG
Chinese Journal of Forensic Medicine 2002;0(06):-
Objective To investigate the changes of actin (HHF35), serum albumin (A1), fibronectin (Fn) in cardiac cells and cardiac conducting sysytem (CCS) in order to probe into postmortem diagnosis of sudden manhood death syndrome (SMDS). Methods Immunohistochemical detections of actin, serum albumin and fibronectin (Fn) in the cardiac cells and CCS were performed by S-P method in cases with SMDS and cases died from coronary heart disease and non-cardiovascular diseases which were used as the control. Results Of the 22 cases with SMDS, 17 were found of actin-negative staining, 18 serum albumin-positive and 15 Fn-positive staining with evident pathological lesions in CCS in 8 cases. Conclusion It is suggested that SMDS is associated with early myocardial ischemia or infarction, which results in abnormality in actin, serum albumin and fibronectin (Fn) in the cardiac cells and CCS.
6.Study on cardiomyocyte apoptosis in coronary heart disease by TUNEL/TEM method
Bin LUO ; Zhongfu MA ; Zhiren LUO
Chinese Journal of Forensic Medicine 2000;0(S1):-
In order to explore the significance of cardiomyocyte apoptosis in coronary heart disease (CHD), the TUNEL and transmission electron microscopic (TEM) techniques were performed. The results showed that the permillage of cardiomyocyte apoptosis in infarct area in patients of sudden death from CHD was significantly higher than that in control group (557.94? 144.10‰ VS 34.30?20.68‰, p
7.Survey on application of different types of fixed partial dentures in Shanghai
Yixi LUO ; Bin HU ; Yanyan HU ; Bin WEI
Journal of Shanghai Jiaotong University(Medical Science) 2009;29(11):1302-1304
Objective To collect the information about the types and clinically-used materials for fixed partial dentures, and evaluate the current conditions and characteristics of fixed partial dentures in Shanghai. Methods Three municipal public hospitals and two private commercial dental labs in Shanghai were served as sample units. The data of fixed partial dentures from January 2005 to December 2007 were retrospectively analysed. The number, type and material of dentures of each year were observed, and the proportion of different types and materials of dentures were analysed. Results From 2005 to 2007, the total number of fixed partial dentures gradually increased year by year, and porcelain fused metal crowns accounted for the largest proportion. The application of noble crown in public hospitals increased annually, and the increase rates were 13.85% in 2005 to 2006 and 30.86% in 2006 to 2007, respectively, while the application of casting basic metal full crown decreased annually. Computer-aided design and computer-aided manufacture (CAD/CAM) fixed partial dentures (CAD/CAM crown) and implant dentures occupied a tiny percentage of total fixed partial dentures in public hospitals and privated dental labs, while both had a remarkable increase trend in number between 2005 and 2007 (227.78% and 53.01%, respectively for 2005 to 2006, and 120.34% and 27.41%, respectively for 2006 to 2007). Conclusion Fixed partial dentures are the most common prostheses for tooth defect, and are characterized by the growing application of advanced techniques and high-quality materials.
8.Progress on metastasis induced by myeloid-derived suppressor cells to promote circu-lating tumor cell
Bin LUO ; Zujun QUE ; Jianhui TIAN
Chinese Journal of Clinical Oncology 2016;43(11):493-497
Circulating tumor cells (CTCs), as the seeds of tumor metastasis, manage to escape from immune clearance both in microen-vironment and in peripheral blood. CTCs can also facilitate formation of pre-existing environment, which is the crucial step in metasta-sis. Myeloid-derived suppressor cells (MDSC), as a group of immunosuppressive cells derived from bone marrow cells, may play a key role in this process. In this review, the progress in MDSC and its role in the formation, survival, and immune escape of CTCs were exten-sively discussed to explore a new target for tumor immunotherapy.
9.Protective effects and mechanism of heat shock response on cardiovascular system in rats after heat exposure
Bin WANG ; Bingde LUO ; Fei ZOU
Chinese Journal of Pathophysiology 2000;0(07):-
AIM: To study protective effects and mechanism of heat shock response (HSR) on cardiovascular system in rats after heat exposure. METHODS: The study was divided into 2 experiments: ① Protective effects of HSR on cardiovascular system in rats after heat exposure. SD rats randomly allocated into 2 groups: heat shock group (HS group), sham control group (SC group). HS group were treated with heat shock, but SC group weren't. After recovering for 20 h at room temperature, two groups exposed to death in thermal environment, and blood pressure and electrocardiogram were measured continuously. Through Chart software mean arterial pressure(MAP), existent time etc were acquired. ② SD male rats randomly allocated into 3 groups: HS group, SC group and normal temperature control group (NC group). NC group weren't treated. The treatment in HS and SC group was identical with in the first experiment, but it would be terminated at 73 min after heat exposure, meanwhile content of MDA of myocardium were measured. RESULTS: ① Existent time in HS group was longer than that in SC group and shock arrived later; ② During earlier period after heat exposure MAP had no significant changes between HS and SC group, but after 60 mins MAP in HS group were higher than that in SC group; ③ Compared with NC group, content of MDA in myocardium in SC group was higher significantly at 73 min after heat exposure. Howerer, content of MDA in HS group was lower than in SC group, and had no significant changes with NC group. CONCLUSION:Through decreasing production of MDA in myocardium, HSR has a protective effect on cardiovascular system in rats after heat exposure.
10.Prevalence of human T lymphotropic virus infection among blood donors
Guozhong ZHANG ; Guozhang XUE ; Bin LUO
Chinese Journal of Laboratory Medicine 2001;0(03):-
Objective To obtain the prevalence data on human T Lymphotropic virus (HTLV) infection in 2 339 blood donors of an endemic coastal region of Fujian, China. Methods Serum antibodies to HTLV in the donors were detected by a home made double antigen sandwitch ELISA kit. All the ELISA positive samples were further confirmed by Western blot (WB) and/or polymerase chain reaction (PCR) combined with sequencing. Results Nine samples were confirmed as HTLV 1 infection among the 2 339 donors. A man whose wife is one of the nine was also detected to infect by WB and PCR. Conclusion The prevalence of HTLV infection was 0.38% in the endemic coastal region of Fujian, China.