INCREASED EXPRESSION OF PDGF AND C－MYC GENES IN LUNGS AND PULMONARY ARTERIES OF PULMONARY HYPERTENSIVE RATS INDUCED BY HYPOXI

ＩＮＣＲＥＡＳＥＤＥＸＰＲＥＳＳＩＯＮＯＦＰＤＧＦＡＮＤＣ－ＭＹＣＧＥＮＥＳＩＮＬＵＮＧＳＡＮＤＰＵＬＭＯＮＡＲＹＡＲＴＥＲＩＥＳＯＦＰＵＬＭＯＮＡＲＹＨＹＰＥＲＴＥＮＳＩＶＥＲＡＴＳＩＮＤＵＣＥＤＢＹＨＹＰＯＸＩＡ￥ＣａｉＹｉｎｇｎｉａｎ；（蔡英年...     

EFFECT OF PREOPERATIVE GLUTAMINE ADMINISTRATION ON ICAM-1 EXPRESSION IN RAT LUNG INDUCED BY INTESTINAL ISCHEMIA-REPERFUSION

Objective To evaluate the effect of preoperative glutamine administration on intracellular adhesion molecule-1 （1CAM-l） expression in rat lung induced by intestinal ischemia-reperfusion（ I/R）. Methods Sprague-Dawley rats （n = 25） were randomly divided into 5 groups： sham group （sham surgery）, glutamine groups （three different doses） and control group. All groups except sham were subjected to intestinal 1/R injury, and superior mesenteric artery （SMA） occluded for 60 min followed by 90 min of reperfusion. Lung injury was evaluated with Evans blue dye concentration and histopathologic examination. The immunohistochemical expression and mRNA expression of 1CAM-1 were measured with immunohistochemical staining and RT-PCR method respectively. The level of myeloperoxidase （MPO） was also measured with biochemistry method. Results Intestinal 1/R resulted in lung injury characterized by an increase in Evans blue dye concentration, neutrophil sequestration, and obvious staining for expression of pulmonary 1CAM-l, compared with sham group. The expression of 1CAM-1 and the level of MPO in rat lung were lower in glutamine groups compared with control group. Conclusion 1-R injury increases the expression of 1CAM-1 within the lung. This may contribute to the migration, accumulation and activation of polymorphonuclear neutrophils （PAINs） after such injury. Preoperative glutamine administration attenuates rat lung injury induced by intestinal I-R, and inhibiting 1CAM-1 expression maybe one of the potential mechanisms.     

EFFECTS OF PHYCOCYANIN ON EXPRESSION OF CytC mRNA AND CASPASE-3 mRNA AFTER FOCAL CEREBRAL ISCHEMIA／REPERFUSION IN RATS

Objective To study the effects of phycocyanin on the expression of Cytochrome C (CytC) genes and Caspase-3 genes after focal cerebral ischemia/reperfusion in rats. Methods A rat middle cerebral artery occlusion (MCAO)/reperfusion model was produced using the intraluminal filament method. The rats were divided into three groups: sham operation group, model control group and phycocyanin group. After MCAO, the neurobehavioral testing of all rats was made. The infarction area was evaluated with the method of 2,3,7-triphenylt-etrazolium chloride (TTC) staining. The expression of CytC mRNA and Caspase-3 mRNA were determined by in situ hybridization. Results In the sham operation group and the model control group, there was only a few CytCpositive cells were seen in the normal cerebral tissue. In the model control group, the upregulation of CytC mRNA began 6h after ischemia, reached a maximum at 12h (cortex)-24h (striatum) , then subsided gradually, but still in high level. In the phycocyanin group, CytC-positive cells were also mainly in cortex and striatum, but the number of the cells was significantly lower than the number of the model control group. The time-phase pattern of CytC mRNA in the phycocyanin group was similar to the pattern of the model control group. In the sham operation group and the model control group, there was only a few Caspase-3-positive cells were seen in the normal cerebral tissue. In the model control group, the upregulation of Caspase-3 mRNA began 6h after ischemia, reached a maximum at 24h and subsided at 48h, but still in high level. In the phycocyanin group, Caspase-3-positive cells were also mainly in the penumbral area, but the number of the cells were significantly lower than the number of the model control group. The time-phase pattern of Caspase-3 mRNA in the phycocyanin group was similar to the pattern of the model control group. Conclusion The over-expression of CytC mRNA and Caspase-3 mRNA might play a key role in ischemic cerebral injury after MCAO. Phycocyanin could inhibit the over-expression of CytC mRNA and Caspase-3 mRNA in the cerebral cortex, and might play an important role in the protection of ischemic neurons.     

CHANGES OF IMMUNE FUNCTIONS AFTER RADIATION，BURNS AND COMBINED RADIATION－BURN INJURY IN RATS

ＣＨＡＮＧＥＳＯＦＩＭＭＵＮＥＦＵＮＣＴＩＯＮＳＡＦＴＥＲＲＡＤＩＡＴＩＯ，ＢＵＲＮＳＡＮＤＣＯＭＢＩＮＥＤＲＡＤＩＡＴＩＯＮ－ＢＵＲＮＩＮＪＵＲＹＩＮ　ＲＡＴＳＹａｎＹｏｎｇｔａｎｇ（阎永堂）；ＲａｎＸｉｎｚｅ（冉新泽）ａｎｄＷｅｉＳｈｕｑｉｎｇ（...     

细胞因子TGF－β_1、PDGF－BB、bFGF在人肝纤维化中的作用

研究和探讨转化生长因子（ＴＧＦ）－β１、血小板源性生长因子（ＰＤＧＦ）－ＢＢ、碱性成纤维细胞生长因子（ｂＦＧＦ）在人肝纤维化中的作用，进一步阐明人体慢性肝病纤维化发生机制。外科切除的肝细胞标本按病变活动程度分为活动性、非活动性或轻度活动性以及对照组，以Ｎｏｒｔｈｅｒｎ分子杂交法测肝组织ＴＧＦ－β１ｍＲＮＡ，以免疫组化法显示组织原位ＰＤＧＦ－ＢＢ，ｂＦＧＦ及其相关细胞，并作半定量分析。结果：（１）肝病组织内ＴＧＦ－β１ｍＲＮＡ含量随肝病活动程度而增高（Ｐ＜０．０１）；（２）组织原位ＰＤＧＦ－ＢＢ、ｂＦＧＦ多肽定位及阳性细胞半定量显示，活动性肝病时两者均增高，阳性细胞所在部位与单核巨噬细胞以及胶原生成细胞一致，与Ⅰ、Ⅲ型胶原沉积也有密切关系。结论：本实验提示细胞因子ＴＧＦ－β１、ＰＤＧＦ－ＢＢ、ｂＦＧＦ在人肝纤维化中起着关键的调节作用。     

THE EXPRESSION OF C－erbB－1 AND C－erbB－2ONCOGENES IN BASAL CELL CARCINOMA ANDSQUAMOUS CELL CARCINOMA OF SKIN

ＴＨＥＥＸＰＲＥＳＳＩＯＮＯＦＣ－ｅｒｂＢ－１ＡＮＤＣ－ｅｒｂＢ－２ＯＮＣＯＧＥＮＥＳＩＮＢＡＳＡＬＣＥＬＬＣＡＲＣＩＮＯＭＡＡＮＤＳＱＵＡＭＯＵＳＣＥＬＬＣＡＲＣＩＮＯＭＡＯＦＳＫＩＮＬｉｕＢａｏｊｕｎ；（刘宝军），ＺｈａｎｇＨａｉｔａｏ；（张海涛...     

EXPRESSION DIFFERENCES OF VASCULAR GROWTH FACTORS IN HUMAN LUNG ADENOCARCINOMA CELL LINE A549 AND CISPLATIN-RESISTANT HUMAN LUNG ADENOCARCINOMA CELL LINE A_(549)~(DDP)

Objective To elucidate the expression differences of vascular growth factors in human lungadenocarcinoma cell line A549 and cisplatin-resistant human lung adenocarcinoma cell line A549DDP . Methods RT-PCR and immunohistochemistry was used to detect the mRNA and protein expressions of vascular endothelial growth factor ( VEGF) and basic fibroblast growth factor ( bFGF) in A549 and A549DDP . Results VEGF and bFGF mRNA were expressed in A549 and in A549DDP VEGF and bFGF mRNA expression levels in A549DDP were significant higher than those in A549 (P< 0 .025 ). VEGF and bFGF protein expressions were all strong positive in A549 and A549DDP. Conclusion There are certain differences between VEGF and bFGF expressions in A549 and A549DDP . Drug-resistance of lung cancer is associated with those above genes over-expressions. Over-expression of vascular growth factors are related to drug resistance of lung cancer.     

EFFECTS OF TGF-β_1 ON THE EXPRESSION OF PLASMINOGEN ACTIVATOR INHIBITOR TYPE 1 IN CULTURED HUMAN RENAL INTERSTITIAL FIBROBLASTS

ffeSllm6 Objectif POur studier ies effets de facteur gi transfonnant de croimnce (tranSforming growth factor-ac,~ ) sur l' exPlession de nzARN de l' inhibiteur d' activateur de Plermi~ne type 1 (PAl-1 ) dens la fibrose interstitiellerdnale in vitro. met~ bofibroblastes rdnaux humans ~t iSOIds et cultivds in yi irc. ac cellules ~t stimuldes per TGFPI de diverses concentrations differenteS (de 0 d 10ng/ml ) et dens une durde diffhente (de 0 d 48h ). L' expression de ~ dePAl-1 est exclude…     

ENDOGENOUS EXPRESSION AND HLA STABILIZATION ASSAY OF PLASMODIUM FALCIPARUM CTL EPITOPEMINIGENE IN HUMAN HLA－A2. 1 AND HLA－BS1 CELLS

Objective. To evaluate the Plasmodium falciparum CTL epitope vaccines in HLA class I allele specific human cell lines that have high frequency among Chinese population. Methods. Synthesized oligonucleotides encoding for P.f. CTL epitope genes, constructed eukaryotic expression plasmids, transfected the minigenes into HLA class I allele specific human cell lines and identified endogenous expressing of the minigenes by RT-PCR and HLA stabilization assay. Results. Two mini-genes encoding Plasmedium falciparum CTL epitopes were designed and cloned, respectively, into an eukaryotic expressing vector to form TR26 which was restricted to HLA-B51,SH6 which was restrictedto HLA-A2.1, and TS, which had the two aforementioned mini-genes fused in tandem. All of these CTL epitope genes were transfected and endogenously expressed in respective cell lines containing appropriate HLA molecules.The obviously increased expressions of HLA class I molecules were detected in the transfected cell lines. It was demonstrated that the two discrete Plasmedium falciparum epitope genes were effectively processed and presented, and the close proximity of the two epitope genes in one chain as in mini-gene TS did not interfere with the process-ing and presenting of each epitope gene in corresponding cell line. Conclusion. A successful expression and presentation of multiple CTL epitope mini-gene in MHC class I allele specific human cell lines were demonstrated by an in vitro assay, which could be corresponding to the vaccina-tion of CTL vaccines in people with different MHC I molecules. This work also suggested the possibility of constructing a multiple CI~ epitope plasmodium falciparum DNA vaccine that could cover most of Chinese population.     

EXPRESSION OF TNFα IL-1β、IL-6 mRNA, RELEASE OF TNFα IN VITAL ORGANS AND THEIRRELATIONSHIP WITH ENDOTOXIN TRANSLOCATION FOLLOWING HEMORRHAGIC SHOCK

INTRODUCTIONMuchattentionhasbeenpaidontherelationshipbetweenhemorrhagicshockandcytokineresponses(l).Therearegrowingevidencesthatafterhemorrhagicshockandsubsequentresuscitation,plasmatumornecrosisfactora(TNFa),interleukin6(lL-6)andinterleukin8(IL-8)levelssuccessivelysignificantlyin-creased,andthecapacityofmonocytes/macr0phagestoproduceinterleukin1(IL-1)wasmarkedlyenhanced,allofwhichwerecorrelatedwithorgandysfunctionandoutcome(2～4)'Butexpressionandreleaseofcy-tokinesinvital0rgans,theird…     

EXPRESSION OF TNFα, IL-lβ, IL-6 mRNA, RELEASE OF TNFα IN VITAL ORGANS AND THEIR RELATIONSHIP WITH ENDOTOXIN TRANSLOCATION FOLLOWING HEMORRHAGIC SHOCK

This study was designed to systematically investigate expression of TNF α,IL-1β,II-6 mRNA in the liver,lungs and kidneys,release of TNF α in the above tissues,their relationship with hepatic,pulmonary and renal dysfunction,and distribution of endogenous endotoxin in tissues after hemorrhagic shock in mice and rats,with reverse-transeription-polymerase chain reaction,ELISA, eta,to elucidate the kinetics of expression and release of major cytokines in vital organs,their role and mechanism of production in shock. The resulis were :①expression of TNF α,IL-1β,IL-6 nIRNA in vital organs successively increased after hemorrhagic shock and resuscitation,and TNF α expression was the first to appear followed by IL-1βThough expression of IL-6 mRNA appeared late,it persisted longer ;②TNF a levels in the liver,lungs and kidneys were all elevated but to different degrees after shock and resuscitation. At 3 hours after resuscitation,TNF α levels in the three above tissues were still significantly high,while plasma TNF α levels were already decreased to control levels；③hepatic,pulmonary and renal functions were damaged to different degrees after hemorrhagic shock,with hepatic dysfunction being the most severe;④endotoxin levels in the liver,lungs and kidneys were markedly increased after shock and resuscitation ,and paralleled the expression of cytokine genes. In additlon, there was significant correlation between changes in endotoxin level in tissues and TNF α release in tissues during early shock. It is suggested that expression and release of eytokines in vital organs might play an important role in local organ damage after hemorrhagic shock,and production of cytokines is related to endotoxin translocation.     

ANALYSIS OF THE N－GLYCOSYLATION OF THE SERUM GLYCOPROTEINS DEFINED BY CON A，PHA－E，RCA1 AND WGA IN CHINESE PATIENTS WITH GASTR

ＡＮＡＬＹＳＩＳＯＦＴＨＥＮ－ＧＬＹＣＯＳＹＬＡＴＩＯＮＯＦＴＨＥＳＥＲＵＭＧＬＹＣＯＰＲＯＴＥＩＮＳＤＥＦＩＮＥＤＢＹＣＯＮＡ，ＰＨＡ－Ｅ，ＲＣＡ１ＡＮＤＷＧＡＩＮＣＨＩＮＥＳＥＰＡＴＩＥＮＴＳＷＩＴＨＧＡＳＴＲＯＩＮＴＥＳＴＩＮＡＬＤＩＳＥＡＳＥ...     

肺纤煎联合泼尼松对博莱霉素A_5致肺纤维化小鼠肺组织TGF-β_1 mRNA表达的影响

目的 :观察肺纤煎联合泼尼松对博莱霉素致小鼠肺纤维化的干预作用及机制。方法 :以腹腔注射博莱霉素A5复制肺纤维化模型 ,将小鼠随机分组并给予不同药物治疗 ,从病理改变、转化生长因子 (TGF) β1mRNA表达等方面 ,动态评价肺纤煎联合泼尼松对肺纤维化的治疗作用。结果 :肺纤煎联合泼尼松治疗后肺泡炎、肺纤维化明显减轻 ;TGF β1mRNA表达有不同程度的降低。结论 :肺纤煎联合泼尼松可通过调控TGF β1mRNA从而减轻博莱霉素A5致小鼠肺纤维化