STUDY OF BEHAVIORAL TOXICOLOGY IN LEAD EXPOSED RATS

Thestudycombinedneurobehavioralfunction,neuroelectrophysiologyandneurobiochemistryonlead-exposuredratsandintendedtofindtheearly,sensitiveindexesforsubclinicalleadpoisoninginordertoprovidethepreventivemeasurementandearlydiagnosticindexesforlead-exposuredgroup.MATERIALSANDMETHODS1ExperimentalanimalTheexperimentswereperformedqn36maleand36femaleSDratsweighingfrom110to140gwhichwereprovidedbyExperimentalAnimalCenterofXi'anMedicalUniversity.Theanimalsweredividedintofourgroups,controlgroupa…     

IMMUNOHISTOCHEMICAL STUDY OF ESTROGEN AND PROGESTERONE RECEPTOR IN THYROID TISSUES OF AUTOIMMUNE THYROID DISEASE

ＳｈｉＢｉｎｇｙｉｎ（施秉银）；ＺｈａｎｇＸｕｃｈｉｎ（张学斌）；ＧａｏＨｕｉ（高慧）；ＭａＸｉｕｐｉｎｇ（马秀萍）；ＷａｎｇＭｉｎ（王敏）ＩＭＭＵＮＯＨＩＳＴＯＣＨＥＭＩＣＡＬＳＴＵＤＹＯＦＥＳＴＲＯＧＥＮＡＮＤＰＲＯＧＥＳＴＥＲＯＮＥＲＥＣＥＰＴ...     

ANALYSIS OF STRYCHNINE ALKALOIDS IN BIOLOGICAL SAMPLES BY THIN-LAYER CHROMATOGRAPHIC DENSITOMETRY AND DISTRIBUTION STUDY OF STRYCHNINE IN INTOXICATED RATS

Strychnine(STN),isolatedfromStrychnosNUX-VomicaL.,isamainactivecomponentofNUXVomicafi]ltpossessestypicalalkaloidcharacteristicsandusuallyco--existswiththesimilarstructuresubstancebrucine(BRN).Intoxicologicalanalysistheclassiccolourreactions,microcrystaltestsandbioassaymethodst2)havethedisadvangesoflowsensitivityandpoorselectivity.Recently,althoughseveralkindsofchromatographictechniquese.g.highperformaneliquidchromatography(HPLC)t')andthinlayerchromatography(TLC)")techniqueshavebeensug…     

THE STUDY OF THE CHANGES AND MECHANISM OF HINDQUARTER VASCULAR RESISTANCE IN RATS WITH MYOCARDIAL INFARCTION

ＴＨＥＳＴＵＤＹＯＦＴＨＥＣＨＡＮＧＥＳＡＮＤＭＥＣＨＡＮＩＳＭＯＦＨＩＮＤＱＵＡＲＴＥＲＶＡＳＣＵＬＡＲＲＥＳＩＳＴＡＮＣＥＩＮＲＡＴＳＷＩＴＨＭＹＯＣＡＲＤＩＡＬＩＮＦＡＲＣＴＩＯＮＱｉｎＪｉｎ（秦金）；ＰｅｔｅｒＦｉｎｎ（Ｄｅｐａｒｔｍｅｎｔｏ...     

THE EXPERIMENTAL STUDY ON THE CELL APOPTOSIS AND EXPRESSION OF BCL-2 PROTEIN IN INTRACEREBRAL HEMORRHAGE IN MODEL OF RATS

Intra-cerebral hemorrhage is a common clinicaldisease,with a high mortality and morbidity.So itis one of the clinical hot topics.It has been foundinrecent years that there is a close relationship bet weenthe cell apoptosis and the course or prognosis of in-tra-cerebral hemorrhage.Bcl-2,as the apoptosis-adjusted gene,plays ani mportant role in the courseof cell apoptosis,but the mechanis min the cell ap-optosis in intra-cerebral hemorrhage remains un-clear.In this experi ment,with the model bui…     

EXPERIMENTAL STUDY OF THE BIOCHEMICAL REMODELLING OF VENTRICULAR COLLAGEN FOLLOWING MYOCARDIAL INFARCTION IN RATS TREATED WITH CAPTOPRIL

IthasbeendemonstratedthatangiotensinI(Aug1)cannotonlystimulatethesynthesesofRNAandproteinofmyocardialcellst,3,butalsoenhancetheproliferationofcardiacfibroblastcell(FBC)andcollagensyntheses.Therefore,theimportantroleofAugIonpromotingandmaintainingmyocytehypertrophyandcollagenremodellingshouldn'tbeignored.OurrecentstudieshavealsoshowedthebiochemicalremodellingofcollagenmatrixinNIA,RVandlAoccurred-follow.ingmyocardialinfarction(MI)inratscZ>.However,thereisalittleevidenceshowingcardiacloca…     

AN EXPERIMENTAL STUDY ON REMOVAL OF NOx IN FLUE GAS AT THENONEQUILIBRIUM PLASMA

Removal of nitrogen oxides (NOx) in flue gas by means of nonequilibrium plasma technology is a very prospect and attractive method. As the nonequilibrium plasma micro discharges can generate a powerful energy flux, imparted to the flue gas, the molecules and atoms of pollutants are motivated and decomposed, and then NOx in the flue gas are decomposed and conversed in the particular conditions. Based on nonequilibrium plasma in combination with catalytic principle, an experimental investigation on NOx decomposition and conversion with AI2 03 catalysts was carriedout and the NOx removal rate up to 95% was obtained. The NOx decomposition and conversion principle with AI2O3 catalysts was also discussed.     

STUDY ON DIFFERENTIATION OF RATS EMBRYONIC STEM CELLS CULTURED IN BRL-CM INTO NEURAL PRECURSOR CELLS

Embryonicstem (ES)cellsrefertothosesepa ratedfromtheinteriorcellmassthathasnotyetim bedded .Thesetotipotentialcellsareinhighundif ferentiatedstate ,canbecultivatedandproliferateinvitro[1] .Underinductioninvitro ,EScellscanbedifferentiatedintocellsthatbelongtothreeembry oniclayers[2 ] ,suchasmyocardiumcells ,bloodcellsandneuralcells .GeneticoperationscanbedonewithoutlosingfeaturesoftheEScells.Thereforeithasbecomethemaintoolintheup to datedcelltherapy .Becausetheyarelikelytoformteratomawhentr…     

GUSTATORY RESPONSES OF NEURONS IN THE PARABRACHIAL NUCLEUS OF RATS

Ａｎｕｍｂｅｒｏｆａｎａｔｏｍｉｃａｌ,ｅｌｅｃｔｒｏｐｈｙｓｉｏｌｏｇｉｃａｌａｎｄｂｅｈａｖｉｏｒａｌｅｘｐｅｒｉｍｅｎｔｓｈａｖｅｓｈｏｗｎｔｈａｔｇｕｓｔａｔｏｒｙｉｎｆｏｒｍａｔｉｏｎｉｎｔｈｅｎｕｃｌｅｕｓｏｆｔｈｅｓｏｌｉｔａｒｙｔｒａｃｔ(ＮＴＳ) ,ｗｈｉｃｈｉｓｃｏｎｖｅｙｅｄｆｒｏｍｔｏｎｇｕｅｖｉａｔｈｅｃｒａｎｉａｌｎｅｒｖｅｓ (ｆａｃｉａｌ,ｇｌｏｓｓｏｐｈａｒｙｎｇｅａｌ,ａｎｄｖａｇｕｓ) ,ｒｅａｃｈｅｓａｃｏｎｆｉｎｅｄ ｐａｒｔｏｆｔｈｅ ｐａｒａｂｒａｃｈｉａｌｎｕｃ…     

THE STUDY OF MICROSATELLITES ALTERATION IN DIAGNOSES OF BLADDER CANCER

Objective To investigate the possibility of microsatellite alteration （MA） in diagnosis of bladder cancer of Chinese people, and find the better panel which will be used in clinic. Methods A total of 6 and 10 microsatellite markers were chosen, PCR-SSLP silver staining assay was performed in 31 and 32 bladder cancers tissue, exfoliate cells in urine and 10, 15 non-bladder cancers exfoliate cells in urine, respectively. Results MA （＋） was found in 28 out of 31, 30 out of 32 bladder cancers, and the sensitivity was 90. 3%, 93.7% respectively. The MA of urine sediment of 25 non-bladder cancers was negative, and the specificity was 100%. The cytology was carried out among 19 out of 31, 20 out of 32 bladder cancers at the same time, 2 cases （10.3%） and 3 cases （15%） were found cancer positive, and the sensitivity is significantly lower than that by the analysis of MA in exfoliated cells. Conclusion MA was not associated with grade and stage of the bladder cancer. MA assay is a sensitive and effective method for the early detection of bladder cancer and post-operation surveillance.     

大鼠和小鼠脑内的GnRH神经元及其纤维通路——免疫组织化学研究

本文应用ABC免疫酶染色技术,观察了大鼠和小鼠脑内GnRH神经元及其纤维的分布。结果发现90%以上的GnRH神经元胞体集中于终板血管器附近的斜角带一视前内侧区,并向头背侧延至内侧隔核,向尾外侧伸到视上核区。内侧基底下丘脑区未见阳性胞体。GnRH纤维经室周和外侧束终止于正中隆起:在头端存在于其全层和全宽,向后渐分成两束,集中于正中隆起外侧部。对啮齿类与灵长类GnRH系统的差异及其在生殖中的意义进行了讨论。     

吗啡依赖大鼠及人体组织内吗啡的免疫组织化学研究

为探讨吗啡依赖形成的机理及免疫组化方法对石蜡包理组织内吗啡检测的可行性,对染吗啡大鼠及吗啡依赖人体组织内的吗啡进行了原位免疫组织化学研究。结果表明染毒７ｄ大鼠脑组织内未能检出吗啡,染毒１４ｄ大鼠脑组织内出现了强弱不一的免疫反应。慢性染毒大鼠及依赖人体石蜡切片亦为阳性结果。提示在大鼠吗啡依赖形成过程中,脑组织内吗啡含量增高,且吗啡的分布与卜阿片受体分布一致。免疫组化方法对石蜡包埋组织内吗啡的检测是可行的。     

THE DISTRIBUTION OF ATRIONATRIURETIC POLYPEPTIDE （ANP）－LIKE SUBSTANCE IN THE HEART OF THE HUMAN FETUS AND RAT－AN IMMUNOHISTOC

ＴＨＥＤＩＳＴＲＩＢＵＴＩＯＮＯＦＡＴＲＩＯＮＡＴＲＩＵＲＥＴＩＣＰＯＬＹＰＥＰＴＩＤＥ（ＡＮＰ）－ＬＩＫＥＳＵＢＳＴＡＮＣＥＩＮＴＨＥＨＥＡＲＴＯＦＴＨＥＨＵＭＡＮＦＥＴＵＳＡＮＤＲＡＴ－ＡＮＩＭＭＵＮＯＨＩＳＴＯＣＨＥＭＩＣＡＬＳＴＵＤＹＬｅｉＴ...     

汉虾粉食用安全性实验研究

为了解汉虾粉的食用安全性，用ＳＤ断乳大鼠１００只，雌雄各半，随机平均分为５组，对照组喂饲基础饲料，试验组分别喂饲含有１００００、５０００、２５００、１２５０ｍｇ／ｋｇ汉虾粉的饲料，喂养９０ｄ，观察动物的一般情况、体重、饲料利用率，试验末１０５ｄ时处死动物，测定肝、肾功有关生化指标，血液Ｈｂ值，红细胞和白细胞计数，并对主要脏器称重计算脏体比，进行组织病理学检查，结果未发现汉虾粉对试验动物有毒害作用。     

桥本氏甲状腺炎的过氧化物酶免疫组织化学研究

用免疫组化方法观察30例桥本氏甲状腺炎过氧化物酶的分布及改变。甲状腺过氧化物酶(TPO)在桥本氏甲状腺炎的阳性率及相对含量都明显低于甲亢及正常对照组。TPO阳性见于散在的小滤泡及小细胞团。桥本氏甲状腺炎TPO明显减少和碘有机化障碍有关,TPO减少的主要原因是滤泡细胞受损。     

AN IMMUNOHISTOCHEMICAL STUDY ON EXPRESSION OF CD44v6 PROTEIN IN HUMAN GALLBLADDER CARCINOMA

ＣＤ4 4ｖ6 ｐｒｏｔｅｉｎｉｓａｃｅｌｌａｄｈｅｓｉｏｎｍｏｌｅｃｕｌｅｅｘ ｐｒｅｓｓｉｎｇｏｎｔｈｅｃｅｌｌｓｕｒｆａｃｅ .Ｒｅｃｅｎｔｌｙ ,ｍａｎｙｓｃｈｏｌａｒｓｎｏｔｉｃｅｄｔｈｅｒｅｌａｔｉｏｎｂｅｔｗｅｅｎＣＤ4 4ｖ6ｅｘｐｒｅｓｓｉｏｎａｎｄｎｅｏｐｌａｓｍｄｅｖｅｌｏｐｍｅｎｔａｓｗｅｌｌａｓｐｒｏｇｒｅｓｓ ,ｂｕｔｔｈｅｒｅ ｐｏｒｔｓａｂｏｕｔｔｈａｔａｒｅｓｃａｒｃｅｉｎＧＢＣ .ＩｎｏｒｄｅｒｔｏｓｔｕｄｙｔｈｅｃｌｉｎｉｃｓｉｇｎｉｆｉｃａｎｃｅｓｏｆＣＤ4 4ｖ6ｅｘｐｒｅｓ…     

涎腺腺样囊性癌的免疫组化研究

利用3种抗体对15例涎腺腺样囊性癌(其中6例含有正常涎腺),进行了免疫组化研究。结果发现:正常涎腺的肌上皮细胞呈S-100蛋白阳性;纹管和排泄管的基底细胞呈角蛋白强阳性。在腺样囊性癌中发现,筛孔状假囊的衬里细胞、细胞巢的外周细胞、小管状结构的外层细胞和小梁边缘细胞呈S-100蛋白、波形蛋白阳性,有时呈角蛋白阳性。而小管的内层细胞和小梁中央细胞呈角蛋白阳性。以上发现提示,腺样囊性癌可能来源于正常涎腺纹管和排泄管的基底细胞。     

Graves病LATS刺激因子的免疫组织化学研究

用长效甲状腺刺激因子抗血清PAP法,对70例弥漫性毒性甲状腺肿的甲状腺组织,进行了免疫组织化学研究。结果发现70例中长效甲状腺刺激因子阳性者56例(80%),阴性者14例(20%)。甲状腺上皮细胞膜上长效甲状腺刺激因子的阳性反应,支持长效甲状腺刺激因子与TSH受体相结合。淋巴细胞亦有阳性反应,与淋巴细胞产生长效甲状腺刺激因子有关。认为长效甲状腺刺激因子与甲亢的病因有关,它是一种自身免疫性疾病。