Objective To study the value of c-reactive protein (CRP) level in the diagnosis and efficacy evaluation of clinical complications in patients after bone marrow transplantation.Methods Sixty-six patients with different complications after bone marrow transplantation were included and CRP levels were tested.The relationship between CRP levels and corresponding clinical complications were analyzed.Results The levels of CRP were significantly different in different complications after the bone marrow transplantation.CRP may marketly increase in the patients with bacterial infection,bacteria-associated mixed infection,ultra-acute GVHD,and ATG reaction;CRP may mildly increase in patients with bacterial infection,fungal infection,bacteria-associated mixed infection,acute/chronic GVHD;CRP did not increase in the patients with viral infection.CRP level reached the highest value in patients with most obvious clinical symptoms of bacterial infection,gradually decreased in patients after effective treatment,those restored to normal but then increased CRP always indicated new clinical complications.Conclusion CRP is a valuable mark for the early differential diagnosis and efficacy of therapy for complications in patients after bone marrow transplantation.

Objective To investigate the role of PTEN protein in secretion of collagen Ⅳ and fibronectin after stimulation of transforming growth factor beta 1(TGF-?1) from renal fibroblasts of rat in vitro.Methods The cultured rat renal fibroblasts were transfected with the reconstructed adenovirus containing PTEN or adenovirus only containing green fluorescence protein(GFP).The fibroblsts were treated in four manners:control group with no added treatment,TGF-?1 group with TGF-?1 stimulation,PTEN+ TGF-?1 group with TGF-?1 stimulation after Ad-PTEN transfection,and GFP+ TGF-?1 group with TGF-?1 stimulation after Ad-GFP transfection.Invert fluorescent microscope was used to detect the GFP expression,meanwhile the PTEN mRNA was determined by RT-PCR method.36h after the transfection,TGF-?1 was added into the culture medium in a concentration of 10ng/ml.After another 24h,ELISA method was used to evaluate the level of collagen Ⅳ and fibronectin.Results The expressions of both GFP and PTEN mRNA increased obviously after the rats' renal fibroblasts were transfected with adenovirus.The secretion of collagen Ⅳ and fibronectin increased significantly in both TGF-?1 group and GFP+ TGF-?1 group compared with that in control group,and decreased markedly in PTEN+ TGF-?1 group compared with that in both TGF-?1 group and GFP+ TGF-?1 group(P

20.0?109/L was day 13(11~21).All the patients got engraftment successfully and attained CR.Acute Ⅰ~Ⅱ GVHD occurred in 5 patients,no acute Ⅲ~Ⅳ GVHD occurred and extensive chronic GVHD did in 2 patients.All the patients were alive and only one patient relapsed after 3~53 months follow-up.Conclusion TBI-based conditioning regimen appears to be safe and effective for non-T-depleted HLA mismatched hemotopoietic stem cell transplants,especially for high-risk and second transplant patients.

Objective To further investigate the effect of mast cell tryptase on the pathogenesis of chronic renal fibrosis. Methods Renal interstitial fibroblasts were isolated from histologically normal renal tissue obtained from kidneys removed because of malignant renal tumor by collagenase disintegration, and cultured in vitro. The cultured fibroblasts were identified by cell shape and immunocytochemistry, and divided into groups for further experiments. The expression of monocyte chemoattractant protein-1 (MCP-1) and protease-activated receptor 2(PAR-2) mRNAs in in vitro cultured fibroblasts was assessed by means of semi-quantitive reverse transcriptase polymerase chain reaction (RT- PCR). Result Renal fibroblasts were successfully cultured. Mast cell tryptase(10~500ng/ml) promoted expression of PAR-2 mRNA and MCP-1 mRNA of human renal fibroblasts in heparin-dependent manner. Proteinase inhibitor benzamidine hydrochloride hydrate (200?mol/L) could suppress the effects of tryptase on the cultured renal fibroblasts. But TGF-? antibody did not influence the effect. Conclusion Tryptase might be involved in pathogenesis and development of renal fibrosis by PAR-2 and MCP-1.

Objective To investigate the effect of bone morphogenetic protein-7 (BMP-7) on high glucose-induced expression of fibronectin (FN) and collagen Ⅳ (Col Ⅳ) and activity of nuclear factor-?? (NF-??) in human renal tubular epithelial cells. Methods Human renal tubular epithelial cells (HKCs) in culture were divided into 5 groups: normal glucose group with 5.5 mmol/L glucose (NG), high glucose group with 25 mmol/L D-glucose (HG), HG+100 ng/ml BMP-7, NG+100 ng/ml BMP-7 and high osmolality group with 25 mmol/L mannitol (HM). Thus HKCs were respectively stimulated with high glucose, high mannitol and BMP-7. Expression of collagen Ⅳ and fibronectin was determined by immunocytochemistry and enzyme linked immunosorbent assay (ELISA) and activity of nuclear factor-?? was assessed with electrophoretic mobility shift assay (EMSA). Results Compared with normal glucose, high glucose concentration up-regulated expression of FN and Col Ⅳ and activity of NF-?? (P0.05). With addition of BMP-7 in a concentration of 100ng/ml to the high glucose medium, expression of Col Ⅳ and FN was suppressed, and the activity of nuclear factor-?? was inhibited in human tubular epithelial cells (P

Infection control is important in quality management of blood purification center. Practice of Continuous Quality Improvement in infection control improves patients' living quality, and it is worth proceeding and generalization.

BACKGROUND: Apoptosis plays a key role in intestinal mucosal ischemia-reperfusion injury and recovery; meanwhile, effect of shenfu injection on apoptosis of intestinal epithelial cells during intestinal mucosal ischemia-reperfusion injury should be studied further.OBJECTIVE: To investigate the relationship between the apoptosis of intestinal epithelium and characteristics of intestinal mucosal ischemia-reperfusion injury and recovery.DESIGN: Randomized controlled animal experiment.SETTING: Department of General Surgery, Xianning Central Hospital;Department of General Surgery, Renmin Hospital of Wuhan University.MATERIALS: The experiment was carried out in the Central Laboratory,Xianning Central Hospital from March to August 2005. Fifty-four healthy male SD rats weighting 200-250 g were provided by Animal Center of Medical School, Wuhan University.METHODS: The rats were divided randomly into 3 experimental groups:control group (n=6), ischemia-reperfusion group (n=24) and shenfu treatment group (n=24). ① Pentobarbital sodium solution (40 mg/kg) was administrated into the intraperitoneal cavity to induce anaesthesia. Through a midline abdominal incision, the mesenteric blood vessel of a 15-cm segment of mid-intestine was occluded for 60-minute with an atraumatic vascular forceps. The control group underwent the same procedure except for unblocking the mesenteric blood vessel. At the end of 60 minutes ischemia period the forceps was removed to allow reperfusion, the abdominal cavity was closed. ShenFu injection (8 mL/kg ·h, 20 mL/kg ·d, produced from Yaan Three-Nine Pharmaceuticals Co, No: 030302) was injected 30 minutes before occlusion in SF treatment group, same quantity of 0.9% natrii chloride was injected in control group and ischemia-regeneration group at the same time, and oxygen was inbreathed during the operation and ischemia-regeneration. ② Experimental intestinal canals were sampled for the following analysis when all groups were respectively performed sham ischemia for 1 hour, intestinal ischemia for 1 hour and reperfusion for 1, 24and 72 hours. Sections were observed in light microscope. Histological mucosal damage in each sample was evaluated as followed scoring system: 0score, normal muscosal villi and gland; 1 score, slight lesion near the tip of the villi; 2 scores, slight lesion of subepithelial gland; 3 scores, development of subepithelial (Gruenhagen) spaces near the tip of the villi with capillary congestion; 4 scores, extension of the subepithelial space with moderate epithelial lifting from the lamina propria; 5 scores, a few denuded villous tips; 6 scores, massive denuded villi; 7 scores, denuded villi with exposed lamina propria and obvious gland lesion; 8 scores, disintegrateon of the lamina propria; 9 scores, haemorrhage and ulceration. ③ The Tunel method (TdT mediated biotin-dUTP nick and labeling; TdT-Frag EL DNA fragmentation detection kit) was used. Inbrief, this method allowed the identification of apoptosis nuclei in tissue samples through DNA fragment and labeling. Apoptosis Index (AI) was set as the average number of apoptosis cells in per 100 cells by observing ten high power fields of adjacent villi and crypts. ④ The mitotic phase of crypt epithelial nucleus within intestinal mucosa was observed in intestinal sections stained with haematoxylin and eosin. The number of cells with nucleus mitotic phase was counted in ten adjacent mucosal crypts, which was taken as the index of mitotic activity of intestinal mucosal epithelial cell.MAIN OUTCOME MEASURES: Intestinal mucosal histopathological changes, apoptosis of intestinal mucosal epithelial cell and mitotic activity of intestinal mucosal crypt.RESULTS: All 54 rats were involved in the final analysis. ①) Scores of histopathological changes were (0.65 ±0.35) points in 1-hour ischemia group, (3.87±0.86) points in 1-hour reperfusion group and (0.65±0.35)points in 24-hour reperfusion group; which were lower than those in ischemia-reperfusion group [(7.11±1.01), (8.05±1.34), (1.53±0.48) points; P＜ 0.05]. ② Indexes of apoptosis were 17.24±7.05 in 1-hour ischemia group, 24.20±9.87 in 1-hour reperfusion group, 11.49±4.71 in 24-hour reperfusion group and 6.02±2.16 in 72-hour reperfusion; which were lower than those in ischemia-reperfusion group (51.09±13.76, 54.89±15.58,23.54±9.64, 12.47±5.52; P ＜ 0.05). Activities of mitosis were 10.37±2.03and 11.72±2.07 in 1-hour ischemia group and 1-hour reperfusion group,respectively; which was higher than those in ischemia-reperfusion group(8.24±1.69, 9.95±1.93; P ＜ 0.05).CONCLUSION: Shenfu injection can significantly attenuate apoptosis of intestinal epithelium, increase crypt mitotic activity, and promote intestinal epithelium regeneration or repair.

OBJECTIVE:To analyse the correlation between cyclosporine A(CsA)and the biochemical indicator of renal transplantation patients.METHODS:The patients were divided into6groups according to the different time length after renal transplatataion:0y～1y,1y～2y,2y～3y,3y～4y,4y～5y and above5y;the blood samples were taken12h after oral administra?tion of CsA,the of concentration CsA in blood of each group was determined and the biochemical tests of which were taken;post-operation medication and the correlation between the blood biochemical index were statistically analyzed by Stata soft?ware.RESULTS:The dosage of CsA decreased gradually from group1to group6,and the concentration of CsA also de?creased.And the data of BUN in group1,5and6were higher than the upper limit of their standard data,the data of triglyc?eride(TG)in group1,2,3,5and6were higher than the upper limit of their stand data;there were significant differences in the data of TP、ALB、TB、DB、Ua、TC、TG、?-GT among the6groups,while the data of ALP、ALT、AST、Glu、BUN、Cr among the6groups have no notable difference.CONCLUSION:The administration of CsA after renal transplantation can change bio?chemical indicator in patients.

Objective To prepare a gelatin hydrogel crosslinked by genipin and loaded with silver sulfadiazine(AgSD) nanoparticles,and test its in vitro anti-bacterial activities and in vivo wound healing enhancing properties. Methods The suspension of AgSD nanoparticles and coarse powder,hydrogels loaded with AgSD nanoparticles and coarse powder were prepared,respectively, and blank gels were used as control. The diameters of inhibition zone of sensitive bacteria were measured;The biocompatibility to L929 cells was studied by MTT method and relative growth rates of the cells were determined. The minimum inhibitory concentration (MIC)and minimum bactericidal concentration(MBC)of 3 sensitive bacteria were tested;DeepⅡdegree scald co-aureus infection mice model was established and the healing index of treatment by drug-loaded hydrogel dressing was calculated within 3 weeks. The collagen deposition was studied after sirius red staining and pathological manifestations were observed after HE staining. Results Compared with AgSD coarse powder,the antibacterial property of AgSD nanoparticles obviously improved in inhibition zone and MIC, MBC experiments. Better biocompatibility and antibacterial property were revealed for AgSD nanoparticles gel group compared with AgSD cream group in MTT assay and inhibition zone studies;Healing index increased significantly since the second week in AgSD nanoparticles gel group compared with staph group,AgSD cream group and AgSD coarse powder gel group in wound-healing experi-ment(P<0.05). Compared with those control groups,nanocrystal gel group had more content of typeⅠcollagen and total collagen, and higher pathology scores(P<0.05). Conclusion AgSD nanocrystal loaded gelatin hydrogel has good antibacterial activity in vitro and high quality healing enhancing property in vivo.

Objective To prepare a silver sulfadiazine(AgSD)-nanocrystal loaded hydrogel with gelatin as the main raw mate-rial,genipin as crosslinker,and test its physicochemical property and drug release characteristics. Methods AgSD-nanocrystal was prepared by ball milling,the particle size and polydispersity index were determined,the solubility was studied by an ultra perfor-mance liquid chromatography(UPLC)method and the microstructure was observed with transmission electron microscope(TEM);drug loaded gelatin hydrogel in different crosslinking degrees were prepared,the dissolution rate was studied in the same way as AgSD-nanocrystal and the possible dissolution mechanism was analyzed by fitting curves;the microstructure was observed by scanning elec-tron microscope(SEM). After 6 weeks,with the same method,all the above mentioned properties of drug loaded hydrogel and AgSD-nanocrystal suspension were determined repeatedly,and at the same time their stability was tested. Results After nanocrystalliza-tion,the polydispersity index of AgSD was 0.211,the mean particle size was about 267.8 nm,the dissolution rate greatly increased within 6 hours compared with that of AgSD bulk powder. There was a negative correlation between dissolution rate and crosslinking de-gree,and the nanoparticle gel's curve was higher than that of the bulk. In terms of stability,AgSD-nanocrystal in hydrogel was almost in the original state in SEM,while those in suspention had an increasing particle size and decreasing dissolution rate. Conclusion The stability and dissolution of the new drug loaded hydrogel are good,and its data can be used as reference for relevant study.