1.Protecting function of heme oxygenase-1 in human liver transplantation
Huawei SU ; Shibo SUN ; Tiewei SUN ; Dequan WU
Chinese Journal of Hepatobiliary Surgery 2010;16(7):504-507
Objective To explore the relation of donor liver's heme oxygenase-1 level to ische-mia/reperfusion injury and the liver function after liver transplantation. Methods Twenty-eight pa-tients receiving orthotopic liver transplantation (OLT) were divided into two groups according to the donor liver's heme oxygenase level of high HO-1 expression group and low HO-1 expression group.The recipients' serum levels of ALT, AST, bile salt output and the expression of HO-1 mRNA were determined and compared between the 2 groups. Results HO-1 mRNA of low expression group in-creased significantly after the reperfusion. Meanwhile, the HO-1 mRNA of high expression group de-creased. The serum levels of ALT and AST of HO-1 in low expression group were much lower but bile salt concentration higher than those in high expression group. Conclusion HO-1 can be further induced in the liver of HO-1 low expression group during the reperfusion period. The I/R injury in the HO-1 low expression group was less severe than that in high expression group, but the liver function was better. The increase of HO-1 during the transplantation seems better for protecting the liver than the initial HO-1 high expression. Kupffer cells are of the main localization for HO-1 protein in human liver.
2.Experimental study of preventive effect of Anduolin (ADL) on radiation-induced lung injury in mice
Hui WANG ; Xin WANG ; Dequan PANG ; Yumin FAN ; Lei HU ; Jie CHEN ; Huakun SU ; Lin YAO
Chinese Journal of Radiological Medicine and Protection 2012;32(3):278-281
Objective To observe the preventive effect of Anduolin(ADL) on radiation-induced lung injury in mice.Methods Totally 180 of Kunming mice were randomly classified into six groups:normal control group ( N ),irradiation control group ( R),irradiation plus low dose ADL group ( L),irradiation plus middle dose ADL group ( M),irradiation plus high dose ADL group ( H),and irradiation plus Dexamethasone group (D).The mice except group N were irradiated with 20 Gy of 6 MV X-rays on whole lung.The mice in group L,M and H were given with ADL 1 d before irradiation and continued for 6 weeks after irradiation.At 2,4 and 6 weeks after irradiation,the general situation and the lung pathological changes of mice were observed.The lung wet weight,collagen contents of the whole lung tissue,hydroxproline concentration,and TGF-β1 expression in the lung were also delected.Results Compared to the group R,the mice breathing rate,hydroxproline concentration,and TGF-β1 expression in the group L were not significantly changed.While in the groups M,H and D,the breathing rate,the generation of hydroxproline and the expression of TGF-β1 were decreased significantly ( F =2.668-161.646,P <0.05).In addition,ADL alleviated the pathological changes on radiation-induced lung injury in mice.Conclusions ADL might have the preventive effect on radiation-induced lung injury in mice.
3.Methodology of transfecting gene into liver graft mediated by adeno-associated virus vector
Sheng TAI ; Zhilei SU ; Zhibing WANG ; Taishi FANG ; Wengang SHANG ; Dequan WU ; Deen HAN
Chinese Journal of Digestive Surgery 2008;7(2):116-119
Objective To investigate the effective route and proper method in transfecting gene into liver graft mediated by adeno-associated virus vector.Methods Three routes including hepatic artery,portal vein and hepatic artery+portal vein,and 3 methods,i.e.routine,circulation and clamping were employed for infusion.The best infusion route and method of gene transfection into liver graft were determined by observing the color change of liver and detecting liver function and transfoetion rate of liver cells.The safety of these methods was evaluated.Results In all the infusion procedures,the color of the liver grafts turned from red to white,no apparent color differenee of the livers and no enlargement nor mottling were observed under surgical microscope.The liver color was back to normal immediately after blood flow was restored.No significantly statistical differences of the ALT values were observed among all the groups(F=0.343,1.265,0.055,P>0.05).Adeno-associated virus vectors coding for the enhanced green fluorescence protein(AAV2-EGFP)were successfully transfected into liver cells by the 3 infusion routes 1 week later,and the difierences of transfection rates via the 3 routes had no statistical significance(F=0.080,0.091,0.045,P>0.05).The transfoction rate of AAV2-EGFP was the highest at any time points when using the clamping method,and then followed by circulation method and routine method,with statistical differenee(F=3.880,2.976,5.129,P<0.05).The transfection rates of AAV2-EGFP were increased progressively and peaked at the 6th week,and then they were decreased gradually.Conclusions Infusion via hepatic artery is the effective route for gene transfection and clamping the vessels can elevate the transfection rate of AAV2-EGFP.All procedures were performed without detectable liver injury.The transfection of gene into liver graft mediated by adeno-associated virus vector is a slow and persistent process.
4.Prevalence and clinical characteristics of Kawasaki disease with arthritis in children
Dequan SU ; Honglin HUANG ; Zhiqiang ZHUO ; Mi YANG
Chinese Pediatric Emergency Medicine 2021;28(9):802-805
Objective:To investigate the incidence and clinical characteristics of Kawasaki disease complicated with arthritis, and explore the relationship with coronary artery disease.Methods:Patients diagnosed with Kawasaki disease at Xiamen Children′s Hospital from January 2015 to June 2020 were included in this study.They were divided into the arthritis group( n=53) and the non-arthritis group( n=401), depending on whether complicated with arthritis.Demographic, clinical symptoms, and laboratory results were retrospectively analyzed. Results:A total of 454 children were included in this study with 53 cases acomplicated with arthritis.There were 32 male cases and 21 female cases.The average age of arthritis group was(5.89±1.35) y, which was older than non-arthritis group[(4.28±1.25) y, P=0.026]. Among the 53 cases of arthritis group, 36 cases (67.92%)of small jiont arthritis, 14 cases(26.41%)of coxitis, ten cases(18.87%)of carpitis, eight cases(15.09%)of gonitis, four cases(7.55%)of anconitis, and three cases(5.66%) of ankle arthritis were involved.There was a statistic difference in the prevalence of intravenous immunogloblin(IVIG)resistant between arthritis group and non-arthritis group(14 cases, 26.14% vs.43 cases, 10.72%, P=0.002). The inflammatory markers(CRP, TNF-α, IL-6) of the arthritis group were significantly higher than those in the non-arthritis group, and the differences were statistically significant( P<0.05, respectively). The incidence of coronary artery disease in the arthritis group(60.38%, 32/53) was higher than that in the non-arthritis group(52.37%, 210/401), but the difference was not statistically significant( P>0.05). Conclusion:Kawasaki disease with arthritis in children is self-limited, with no sequelae.Patients in the arthritis group have a higher rate of IVIG resistance and higher levels of inflammatory markers, but no significant difference in the incidence of coronary artery disease compared with those without arthritis.
5.Chemical constituents of Neoalsomitra integrifoliola.
Dongmin SU ; Wenzhao TANG ; Shishan YU ; Yunbao LIU ; Jing QU ; Dequan YU
China Journal of Chinese Materia Medica 2012;37(11):1593-1596
OBJECTIVETo study the chemical constituents of the n-BuOH fraction of 95% ethanolic extract of leaves of Neoalsomitra integrifoliola.
METHODThe compounds were isolated with kinds of column chromatography. The structures were determined by MS and NMR spectroscopic techniques.
RESULTEight compounds were isolated from the n-BuOH fraction of 95% ethanolic extract and their structures were identified as 2-phenylethyl rutinoside (1), rutin (2), kaempferol-3-O-alpha-L-rhamnopyranosyl-(1-->6)-beta-D-glucopyranoside (3), isorhamnetin-3-O-alpha-L-rhamnopyranosyl-(1-->6)-beta-D-glucopyranoside (4), methyl chlorogenate (5), guanosine (6), adenosine (7), myo-inositol (8), respectively.
CONCLUSIONAll compounds were isolated from this genus for the first time.
Cucurbitaceae ; chemistry ; Drugs, Chinese Herbal ; chemistry ; Organic Chemicals ; analysis ; chemistry ; isolation & purification