3.Expression of HLA-G5 in healthy people and the recipients of renal and liver transplantation
Li XIAO ; Bingyi SHI ; Ming CAI
Medical Journal of Chinese People's Liberation Army 1982;0(01):-
Objective To investigate the expression of human leukocyte antigen-G5 (HLA-G5) in healthy Chinese people and the recipients of renal and liver transplantation. The regulating mechanism of the expression of HLA-G5 was discussed by comparing the expression of HLA-G5 in the healthy people with that in renal and liver transplantation recipients. Furthermore, the changing regularity with time was studied by kinesis supervising the expression of HLA-G5 in renal and liver transplantation recipients. Methods The peripheral blood samples (3ml) from 30 health people, 50 recipients of liver transplantation (liver function was stable 3 months after liver transplantation) and 50 recipients of renal transplantation (renal function was stable 3 months after renal transplantation) were collected. Peripheral blood samples were also collected in same amount from 33 recipients of renal and liver transplantation before operation and 1, 4 and 12 weeks and 1 year after operation. The HLA-G5 of all serum samples was analyzed by ELISA. Results For 30 healthy people, the OD value of HLA-G5 in 28 people was below 0.5, for which the contents were defined as 0.0ng/ml according to standard and the contents for the other 2 people were 8ng/ml and 9ng/ml, respectively. 16 of 50 recipients undergone liver transplantation were positive for the expression of HLA-G5, the positive ratio was 32%. The contents in 4 recipients were higher than 30ng/ml. 10 of 50 recipients of renal transplantation were positive in the expression of HLA-G5, the positive ratio was 20%. The contents in one recipient were higher than 25ng/ml. The average contents in sera of healthy people, recipients of liver or renal transplantation were 0.56?0.20ng/ml, 8.34?1.50ng/ml and 3.26?0.25ng/ml, respectively. For 33 recipients of liver or renal transplantation, the expression of HLA-G5 was detected by ELISA, and it was found that one recipient the expression of HLA-G5 was positive before operation and within 1 week after operation; expression of HLA-G5 was positive in 4 recipients within 4 weeks after operation; expression of HLA-G5 was positive within 12 weeks after operation in 12 recipients; and the expression of HLA-G5 was positive within 1 year after operation in 11 recipients. Conclusion The expression of HLA-G5 in healthy people is low. There are correlation between the expression of HLA-G5 and immunotolerance to transplants. In minor rejection condition after transplantation, there are different expression levels of HLA-G5, and it is higher after liver transplantation than!renal transplantation. The time for expression of HLA-G5 corresponds with the time for mRNA of HLA-G5 transcription into protein, and it is about 15-60 days, with 60 days as the peak time.
4.Preparation of leukoreduced platelet concentrates from pooled buffy coats in a mixture of solutions for medical use
Chengyin HUANG ; Li CAI ; Jianyu XIAO
Chinese Journal of Blood Transfusion 2008;0(09):-
Objective To develop a method to produce leukoreduced platelet concentrates(LR-PCs) from pooled buffy coats in additive solution(a mixture of solutions for medical use).Methods LR-PCs were made from 6 pooled buffy coats(12 whole-blood units) and 220g additive solution,including 90% multiple electrolytes injection solution,8% ACD-A and 2% 50g/L NaHCO3 injection solution.After centrifugation,the PCs were leukoreduced with a filter and stored in a 600ml platelet storage bag.LR-PCs were prepared in a closed system.Results Routinely produced LR-PCs(n=30) contained(2.96?0.31)?1011 platelets with a volume of(270? 32)ml.The WBC and RBC count were(1.3?0.2)?106 and(5.8?1.1)?109 per unit,respectively.The CD62P expression was(22.5? 10.6)%.After 8-day storage,the in vitro quality of LR-PCs,including pH,hypotonic shock response(HSR) and CD62P expression were 7.14?0.04,(54.0?8.2)% and(45.7?13.8)%,respectively.Conclusion In terms of the in vitro quality of LR-PCs,the method of preparing LR-PCs from pooled buffy coats in mixing solutions is feasible.
5.Effect of PARP inhibitor 5-AIQ on PARP/NF-?B complex and NF-?B activity in murine colon carcinoma CT26 cells
Li CAI ; Yalan WANG ; Xiao LIN
Basic & Clinical Medicine 2006;0(11):-
Objective To investigate the effect of PARP inhibitor 5-AIQ on PARP/NF-?B P65 complex and the NF-?B activity in murine colon carcinoma CT26 cells.Methods The murine colon carcinoma CT26 cells were treated with 5-AIQ in vitro.The expressions of PARP and NF-?B P65 were analyzed by Western Blot.The PARP/NF-?B P65 complex was analyzed by co-immunoprecipitation.The NF-?B binding activity was detected by electrophoretic mobility shift assay(EMSA).Results Compared with 5-AIQ-untreated group,the expressions of PARP and NF-?B P65 were markedly decreased in 5-AIQ-treated colon carcinoma CT26 cell groups(P
6.Effects of turicamycin on proliferation of high glucose-induced glomerular mesangial cells and its mechanism study
Songmin HUANG ; Wenli CAI ; Li XIAO ; Li ZENG ; Li ZHOU
Chinese Journal of Nephrology 1997;0(01):-
Objective To observe the effects of turicamycin-inhibitor of N-glycosylation of proteins on expression of (?1 integrin,FAK and cyclin D1 in high glucose-induced glomerular mesangial cells (CMC), and to explore the mechanism concerned. Methods Cultured HBZY-1 rat mesangial cells were divided into 5 groups:control group;high glucose group;mannitol group;high glucose plus TM group; TM group.The expression of ?1 integrin was measured by flow cytometry, expression of FAK and cyclin D1 was measured by immunohistochemistry,and proliferation of GMCs was measured by MTT. Results There was a little expression of ?1 integrin, FAK and cyclin D1 on normal mesangial cells. High glucose induced the proliferation and increased the expression of ?1 integrin and cyclin D1.There was no significant difference in mannitol group as compared to control group.The expression of (?1 integrin FAK and cyclin D1 decreased notably by TM.TM could also decrease proliferative abilitiy of cells. All the effects of TM were dose-dependent. Conclusion Through blocking glycosylation of glycoprotein, TM can suppress cellular proliferation and expression of pi integrin induced by high glucose in a dose-dependent manners,then pi integrin affects the expression of FAK and cyclin D1.
9.Research advances of recombinant coagulation factor VII expression and synthesizing mechanism
Lin PENG ; Xiao YU ; Yanfei CAI ; Jian JIN ; Huazhong LI
Journal of China Pharmaceutical University 2015;(5):623-628
Haemophilia is caused by lack of coagulation factor VIII or IX in patients′blood with inadequate hemostasis.Currently recombinant coagulation factor VII(rFVII)produced in different cells is used against clini-cal bleeding of haemophilia patients.To enhance the production and activity of rFVII;some eukaryotic cells such as baby hamster kidney(BHK);Chinese hamster ovary(CHO);insect cell and fish embryo;were used to express rFVII.Meanwhile;the effect of functional gene on the activity of rFVII and the limitation of rFVII production caused by post-translational modification were investigated by different methods.The role of rFVII in hemostasis;synthesis of rFVII in different eukaryotic cells and impact on production of post-translational modification are reviewed in this article.
10.Comparison Between Laparoscopic and Open Surgery in Treating Ectopic Oviduct Pregnancy
Yiqin LU ; Xiaomei WU ; Qiong CAI ; Tao YUAN ; Xiao LI
Journal of Kunming Medical University 2013;(9):73-75
Objective To compare the surgical outcomes between laparoscopic and open surgeries in treatment of ectopic oviduct pregnancy, and investigate the clinical value of laparoscopic surgery. Methods Two hundred and forty-six patients with ectopic oviduct pregnancy in our hospital from June 2009 to March 2013 were retrospectively analyzed. 134 cases were treated with laparoscopic operation and 112 with open surgery. Some parameters such as operative time, blood loss, usage of pain-killer, hospital stay were compared between both groups. Results All operations were successful. Laparoscopic surgery was shown to be superior to open operation in the parameters of operative time, blood loss, usage of pain-killer and hospital stay ( < 0.05) . Conclusion Compared with open operation, laparoscopic surgery has the advantages of less trauma and rapid postoperative rehabilitation. It may become the first line treatment for ectopic oviduct pregnancy.