Purpose To study the clincal and pathological characterization of autoimnune hapatitis(AIH)cases. Methods The clinical data, the results of pathological examination, immtmofluorescence stainingobservation of the liver biopsy tissue of 8 AIH cases were investigated retrospectively. Results All of 8patients were female and were diagnosed as type Ⅰ AIH. The main symptoms included fever, arthrodynia,purpura or jaundice. Most of cases were companied with other autoimmune diseases and were positive for RFor/and ANA antibodies. The titer of ganna globulin, ALT and AST was increased. The chronic hepatitiswas the main histologic change, in which the minor to moderate degree was in most cases with spotty,piecemeal and bridging necrosis of liver tissue, inflammatory infiltration and fibrosis processing in portal area.In 5 cases IgG was detected by immunofluorescence assay,and in 2cases HBsAg was positive. ConclusionsThe histologic and immunofluorescence examination are necessary for the diagnosis of AIH and can behelpful especially in the diagnosis of the variant type of AIH.

Objective: To observe the alteration of type-　 Ⅰ collagen protein gene expression after arterial injury and investigate its effect on the development of restenosis. Methods: Firstly, thee xperimental carotid arterial injury rabbit model was constructed. Then, Norther n blot, in situ hybridization and histomorphometric analysis were used to de tect the expression of procollagen mRNA and the accumulation of collagen protein 1,2,4 weeks after injury. Results: Type-　Ⅰ collag en mRNA increased 1 week after injury, peaked 2 weeks later and decreased 4 week s later. The deposition of the collagen protein account for a high percentage o f space in neointima on histomorphometric analysis. Conclusion: Collagen protein may play an important role in the development of neointima and restenosis.

Objective: To observe the alteration of type Ⅰ collagen protein gene expression after arterial injury and investigate its effect on the development of restenosis. Methods: Firstly, theexperimental carotid arterial injury rabbit model was constructed. Then, Northern blot, in situ hybridization and histomorphometric analysis were used to detect the expression of procollagen mRNA and the accumulation of collagen protein 1,2,4 weeks after injury. Results: Type Ⅰ collagen mRNA increased 1 week after injury, peaked 2 weeks later and decreased 4 weeks later. The deposition of the collagen protein account for a high percentage of space in neointima on histomorphometric analysis. Conclusion: Collagen protein may play an important role in the development of neointima and restenosis. [

AIM: To investigate the role of proliferation and apoptosis in hypertensive left ventricular hypertrophy (LVH) and the effect of AT 1 blockade with losartan. METHODS: Left ventricles (LV) from 12, 24-week-old SHR (SHR 12 , SHR 24 ), 24-week-old SHR treated with losartan (15 mg?kg -1 ?d -1 , SHR-L 24 ) during 12 weeks, and age-matched WKY rats (WKY 12 , WKY 24 ) were studied. Expression of PCNA was examined by immunohistochemistry. Apoptotic cells in LV sections were assessed by TUNEL method. Levels of fas mRNA were quantitated by RT-PCR. RESULTS: Compared with age-matched WKY, SHR 12 and SHR 24 showed increased LV hypertrophied index (HI), increased apoptotic index (AI) of myocytes ( P

Objective To understand the pathogenic mechanism of ?-endorphin(?-EP) on infective brain edema(IBE).Methods Experimental IBE was induced by pertussis bacilli in rabbits.Forteen rabbits were divided randomly into two groups:Normal saline group(NS,n=7),pertussis bacilli group(PB,n=7).Water content(WC) in brain tissue and ?-EP were measured in plasma,cerebrospinal fluid(CSF),cortex and hippocampus in two groups respectively.Results WC was singnificantly higher in the PB group than those in the NS groups(P

Objective To investigate the levels of serum tumor necrosis factor-alpha (TNF-?琢) and soluble tumor necrosis factor receptor (sTNF-R) and sTNF-R/TNF-?琢 ratios in patients with severe lupus nephritis (SLN) and the impact of double pulse therapy with methylprednisolone (MP) combined cytoxan (CTX). Methods Serum TNF-?琢, soluble tumor necrosis factor receptor type Ⅰ(sTNF-RⅠ) and soluble tumor necrosis factor receptor type Ⅱ (sTNF-RⅡ) levels were determined in 38 cases of SLN patients and 35 health controls by double antibody sandwich enzyme-linked immunosorbent assay (ELISA) before and after the double pulse therapy with MP and CTX. Anti-dsDNA antibody was detected by ELISA. Antinuclear antibody (ANA) was detected by indirect immunofluorescence experiments. Complement C3 and complement C4 were detected by rate nephelometry. Results The serum levels of TNF-?琢, sTNF-RⅠ, sTNF-RⅡand ratios of TNF-?琢/sTNF-RⅠ, TNF-a/sTNF-RⅡ were significantly higher in SLN patients than those in normal control group (P

Prophylactic effect of magnesium sulfate on reperfusion-airhythmias was studied using a left anterior descending coronary artery occlusion followed by reperfusion in the isolated rat hearts. In the first part of the present work, we observed a bell-shaped relationship between the incidence of reperfusion-induced ventricular fibrillation (VF) and the duration of preceding ischemia. In the second part, the concentration of magnesium sulfate in perfusate was increased to 3.6, 4.8 and 6.0mmol/L, respectively, 1 min before coronary ligation, VF fell in a dose-dependent manner from its control total incidence of 100% to 82%, 73% and 18% (P

AIM: The present study is to investigate the inhibitory effect of the transfer of replication-defective retroviral recombinant plasmid encoding a wild-type P16 ink4a gene on the formation of restenosis after rabbit carotid arterial injury in vivo.METHODS:A replication-defective retroviral recombinant plasmid encoding wild-type gene P16 ink4a was constructed and the packaged high titer virus stock was obtained. It was transferred into the rabbit carotid arterial wall immediately after injury. The P16 ink4a mRNA expression in the arteries was examined by Northern blot and in situ hybridization. The effect of overexpression of the P16 ink4a gene on arterial intima hyperplasia was determined by pathophysiological method. RESULTS: The exogenous P16 ink4a could be effectively transferred into injured arterial wall by retroviral recombinant plasmid and the gene products could inhibit smooth muscle cells proliferation (11.80?3.54 vs 25.20?5.12,P

Objective To investigate the effects of the free radical scavenger,edaravone,on patients undergoing cardiac valve replacement under cardiopulmonary bypass (CPB). Methods Thirty patients,including 7 males and 23 females,at a mean age of 41.4?10.4 (23 to 63),undergoing mitral or/and aortic valve replacement (MVR or AVR) under CPB from March to December 2009 in our hospital were subjected,and then divided into 2 matched groups by means of random number table,study group (n=14) and control group (n=16).Inclusion criteria: patients received valve replacement surgery under CPB; aging from 20 to 65; heart function: class Ⅰto Ⅲ; liver,kidney and lung function properly; blood gas and electrolyte properly. Exclude criteria: preoperatively used scavenger and the like; there was a history of cerebrovascular or neuropsychiatric symptoms; had a history of myocardial infarction or other coronary artery disease. In the intervention group,0.5 mg/kg of edaravone was diluted to 20 ml and introduced into CPB unit at the beginning,while the same dose of saline water was given in control group in the same way. Blood samples were collected from radial artery at following 5 time points,the beginning of CPB (T0),the end of CPB (T1),30 min (T2),6 h (T3),and 24 h (T4) after CPB. After the blood samples of all cases were collected,the serum level of hematocrit (HCT),malondialdehyde (MDA),inducible nitric oxide synthase (iNOS),cardiac troponin I (cTnI),creatine kinase-MB (CK-MB),myoglobin (Myo),S100 protein and neuron-specific enolase (NSE) was detected. Cardiac resuscitation and critically postoperative complications were observed. Results The level of HCT at T1-T3,cTnI at T4 was lower in study group than that in control (P

Objective To investigate changes and clinical significance of serum granulocyte-macrophage colony stimulating factor(GM-CSF),tumor necrosis factor-alpha(TNF-?),interleukin-6(IL-6)and interleukin-8(IL-8)level in patients with bee-sting poisoning.Methods One hundred and nine patients with bee-sting poisoning were also divided into slight poisoning group,moderate poisoning group,and server poisoning group and also divided into dead group and survival group according to the prognosis.Thirty healthy persons were selected as control group.GM-CSF and TNF-?were measured using radioimmunoassay,IL-6 and IL-8 was measured using enzyme linked immunoadsorbent assay(ELISA),and they were compared with control grouup.Results The levels of serum GM-CSF,TNF-?,IL-6,IL-8 in slight poisoning group were increased a little,and there were no significant difference compared with control group(P＞0. 05).The levels of serum GM-CSF,TNF-?,IL-6 and IL-8 were significantly higher in moderate poisoning group and severe poisoning group than those in the control group(P＜0.01),but the severe poisoning group were much higher than the moderate poisoning group(P＜0.01).They were significantly higher in survival group than those in dead group(P＜0.01).APACHEⅡscores were obvious correlated with the levels of serum GM-CSF,TNF-?,IL-6 and IL-8(P＜0.05 or P＜0.01). Conclusion GM-CSF,TNF-?,IL-6 and IL-8 may participate in the occurrence and progress of patients with bee-sting poisoning.Dynamic monitoring of serum GM-CSF,TNF-?,IL-6,IL-8 and APACHEⅡscores plays an important role in diagnosis of the severity of patients with bee-sting poisoning and its prognosis.The use of antagonist and inhibitor of cytokines may be helpful to treat patients with bee-sting poisoning.