1.On certain issues in pathogenesis of inguinal hernia.
Chinese Journal of Surgery 2007;45(21):1444-1445
Female
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Hernia, Inguinal
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etiology
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pathology
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surgery
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Humans
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Male
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Risk Factors
2.Recognition of laparoscopic and robotic abdominal hernia repairs
Chinese Journal of Digestive Surgery 2017;16(9):903-906
Laparoscopic and robotic techniques change the view of groin anatomy from inside to outside.The amplification view of laparoscopy extends surgeons' visual field,with clear and precise anatomy,less bleeding and certain outcome.Robotic flexible joints increase angle of suture to abdominal wall.In this background,hernia surgeons pay close attention to closure of abdominal wall defect,choice and fix of mesh as well as status of robotic technique in hernia filed.
3.Research progress of IgG4 in isotype selection of antibody drugs.
Chen CHEN ; Hui WANG ; Jing-shuang WEI
Acta Pharmaceutica Sinica 2015;50(7):802-807
Many specific therapeutic antibody drugs have been developed for different indications. In drug development, it has been found that the antibody isotype framework can not only affect the physical and chemical properties of therapeutic antibodies, but also influence the activity and therapeutic effect. As a result, IgG isotype selection should be considered carefully in antibody drug development strategies. Because of the unique biological characteristics, IgG4 isotype has been used in some therapeutic antibodies for which effector functions are not desired. In order to provide new ideas for the development of antibody drugs, the research and application progress of IgG4 isotype in therapeutic antibody drug development has been reviewed.
Drug Design
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Humans
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Immunoglobulin G
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chemistry
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pharmacology
4.Investigation of transcatheter arterial chemoembolization for Unresectable primary liver cancer
Beizhan NIU ; Shuang SI ; Shuguang CHEN
Clinical Medicine of China 2015;31(10):884-886
Objective To investigate the therapeutic measures of unresectable primary liver cancer (PLC) with transcatheter arterial chemoembolization(TACE).Methods The clinical data,treatment measures and followed up data of 312 patients with unresectable primary liver cancer from January 1991 to March 2010 were analyzed retrospectively.Of these 312 patients, different dosages, measures of transcatheter arterial chemoembolization together with immunotherapy and nutritional support treatments were given to the patients according to their own statements, including the patency of portal vein (evaluated by portography), the range, blood supply and lipiodol concentration of the lesions (evaluated by hepatic arteriography), and the systemic conditions.Some of these patients also accepted cryotherapy, radio frequency ablation (RFA), percutaneous ethanol injection therapy.Results Two hundred and eighty-seven patients were followed up (92%).Forty-two cases accepted the two-stage operation as the lesions were localized or reduced.In these 42 patients, 34 cases accepted the hepatectomy, 8 cases accepted the cryotherapy.The 1,3 and 5 year survival rate of all patients were 87.6%, 33.1% and 13.2%.Conclusion TACE for unresectable primary liver cancer should be used individually and comprehensivly.Surgical treatment should be taken once the lesions can be resected.
5.von Willebrand factor, factor Ⅷ and acute ischemic stroke
Xinyue CHEN ; Shuang LI ; Guorong BI
International Journal of Cerebrovascular Diseases 2015;23(7):537-541
von Willebrand factor (vWF) and factor Ⅷ (FⅧ) exist in a complex form in blood.After being activated,they mediated platelet adhesion and aggregation,and play an important role in the course of thrombosis.The levels in blood of both of them were affected by a variety of factors.vWF and FⅧ are closely associated with the risk,etiological type,severity and outcome of acute ischemic stroke.Studies on the corresponding antagonistic drugs have made a breakthrough,and these drugs may become more advantageous antithrombotic s.
6.Research progress on the virulence factors of Streptococcus hemolysin S
Hong WANG ; Shuang PENG ; Defang CHEN
Chinese Journal of Zoonoses 2017;33(3):287-292
Streptolysin S (SLS),one of the important virulence factors of Streptococcus,exist in several kinds of human and animal pathogenic bacterial,including Streptococcus pyogenes,Strepstococcus iniae and Streptococcus anginosus.SLS is a peptide toxin encoded by nine consecutive genes (sagA-sagⅠ).The functions of SLS include contributing pathogenic bacterium to pass through epithelial barrier,causing tissue damage,resisting to phagocytic clearance of host immune cells and interacting with other virulence factors.In addition,SLS as a signaling molecule of cell quorum sensing is involved in regulating the expression with other virulence factors.This paper summarized the structures and the biological functions of SLS in Streptococcus infection.
7.MRI diagnosis of meningovascular neurosyphilis
Shuang CHEN ; Jianguo QIAN ; Xiaoyuan FENG
Chinese Journal of Radiology 2001;0(02):-
Objective To evaluate the value and limitation of MRI in the diagnosis of meningovascular neurosyphilis. Methods Five cases of neurosyphilis confirmed by clinical history/laboratory were examined with MRI (3 plain MRI, 2 enhanced MRI). The results of blood and CSF TPPA/RPR were positive and HIV was negative. Results Abnormal signals were demonstrated in the temporal lobe in 3 cases, and infarction was revealed in the basal ganglion and periventricular white matter in another 2 cases. There was no marked contrast enhancement in the 2 cases. Conclusion Meningovascular neurosyphilis has no characteristic features on MRI, but MRI is an effective method in delineating the size, range, and characters of neurosyphilis, and it is also an useful modality to follow-up after antibiotic therapy.
8.Study on the Role of Calcitonin Gene-related peptide and Progesterone in the Pathogenesis of Pregnancy Induced Hypertension
Wenjing SHI ; Jing CHEN ; Shuang LIU
Chinese Journal of Perinatal Medicine 1998;0(01):-
Objective To explore the role of CGRP and progesterone along with it on the etiopathology of PIH. Methods 8 specimens of umbilical vein endothelial cells from women with PIH were cultured. Four groups were divided when cultured cells were confluent: the sera of normal pregnancy women (group 1), the sera of women with PIH (group2), the mixture of the sera of women with PIH and the injection of progesterone (group3), and the same amount of media (group 4). The cultured cell were added respectively into the four different kinds of media. After 24h of incubation, the concentration of endothelin (ET) and CGRP in media were measured by radioimmunoassay. Results 1. Comparing with group1, the concentration of CGRP in group 2 decreased and ET increased significantly. Statistic difference of ET/CGRP was found between the two groups. 2. Comparing with group 1, the concentration of CGRP in group 3 was unchanged and ET increased obviously. No difference of ET/CGRP was shown between them. 3. Comparing with group 3, in group 2, the concentration of CGRP decreased obviously and that of ET unchanged. Significant difference of ET/CGRP was found. Conclusions Progesterone, along with CGRP, might delay the onset and progressing of PIH.
9.Reduced expression and dynamic alteration of growth hormone receptors in cirrhotic hepatocytes of rats
Hongtao WANG ; Shuang CHEN ; Qingjia OU
Chinese Journal of Pathophysiology 1986;0(04):-
AIM: To study the expression and change of growth hormone receptors in experimental cirrhotic liver in rats. METHODS: Thioacetamide-induced liver cirrhosis was developed in Sprague-Dawley rats. The expression of growth hormone receptor and its mRNA was investigated by radio-ligand binding assay, revere transcript-polymerase chain reaction (RT-PCR) and digital image analysis in liver tissue or hepatocytes taken from normal control or cirrhotic rats with different stages of cirrhosis. RESULTS: Growth hormone-specific singular binding sties, namely growth hormone receptors, were detected in liver tissue or hepatocytes from rat samples with cirrhosis. The binding capacity of growth hormone receptors in rat cirrhotic live tissue was significant lower than that in normal control, and it decreased gradually along with the accumulation of collagen in the process of formation and development of liver cirrhosis. The binding sites of growth hormone receptors in rat cirrhotic liver cells were significantly lower than that in normal control. The expression of growth hormone receptor mRNA in rat cirrhotic liver tissue was also significant lower than that in normal control. CONCLUSIONS: The growth hormone receptor was expressed in cirrhotic livers at a reduced level in isolated hepatocytes or live tissue of cirrhotic rats, and lesser expression of growth hormone receptors was found in later stage of cirrhosis. The suppressed expression of growth hormone receptor was partly due to the reduced expression of its mRNA in cirrhotic liver tissue.