FUCOIDIN INHIBITS OXIDIZED LOW DENSITY LIPOPROTEIN FROM INDUCING HUMAN PERIPHERAL BLOOD MONOCYTE EXPRESSION OF PROINFLAMMATORY CYTOKINES mRNA

Researcheshavealreadydemonstratedthatscav engerreceptorclassA(SR A)isabletobindoxidizedlowdensitylipoprotein(OxLDL)withhighaffinityandisoneofthemainreceptormediatingmurinemacrophagetouptakeOxLDL[1] .Itisalsoexpressedinhumanperipheralbloodmonocyte[2 ] andathero scleroticlesions[3 ] .However ,functionsofSR Ainmediatinghumanperipheralbloodmonocytetoup takeOxLDLaswellaspromotingtheatheroscleroticimmuno pathologicallesioninthelocalbloodvesselarestillunclear .Soforthepurposeofstudyingthefunc…     

STUDY OF ESTROGEN RECEPTOR AND PROGESTERONE RECEPTOR IN SQUAMOUS CELL CARCINOMA TISSUE OF ORAL MUCOSA

ＤｉａｏＧｕｉｘｉａｎｇ（刁桂香）；ＨｕＹｏｎｇｓｈｅｎｇ（胡永升）；ＹｕａｎＨｏｎｇｍｉｎ（袁红民）ＳＴＵＤＹＯＦＥＳＴＲＯＧＥＮＲＥＣＥＰＴＯＲＡＮＤＰＲＯＧＥＳＴＥＲＯＮＥＲＥＣＥＰＴＯＲＩＮＳＱＵＡＭＯＵＳＣＥＬＬＣＡＲＣＩＮＯＭＡＴＩＳＳＵ...     

EXPRESSION OF ANDROGEN RECEPTOR IN THE DEVELOPING RAT EPIDIDYMIS AND ITS REGULATION BY ANDROGENS

Epididymis depends upon androgens for itsprenatal and postnatal differentiation,absorptionof testicular fluid,transport of sperm,and secre-tion of proteins thatbring aboutfunctional changesin sperm[1] .Because of the significance of andro-gens in epididymis- mediated sperm maturation,weassessed the localization,developmental patterns,and hormonal control of androgen receptors(AR)in the developing and ethane dimethane sulfonate(EDS) treated SD rat epididymis(caput,corpusand cauda) .The immuno…     

THE GENE EXPRESSION OF BDNF IN NORMAL RABBIT RETINA

Objective To investigate the distribution of brain-derived neurotrophic factor(BDNF) protein in the rabbit retina. Methods Immune response material in the retina was observed using BDNF antibody by the method of immunohistochemistry. Results BDNF gene expression was mainly found in the RGCs, also in innernuclei cells and outernuclei cells in rabbit retina. Conclusion RGC is not only the target cell of BDNF, but also express the BDNF protein. BDNF from multi-sources participates in the regulation of RGCs.     

良性前列腺增生的形态学改变与ARmRNA表达差异

采用直接法原位ＰＣＲ技术对４例ＮＡＰ和１０例ＢＰＨ组织中ＡＲｍＲＮＡ表达作了检测分析,并对其在ＮＡＰ与ＢＰＨ的表达作了定量比较分析。结果表明∶（１）ＮＡＰ及ＢＰＨ标本ＡＲｍＲＮＡ表达均显示阳性。阳性信号主要定位于靠近核膜的胞浆当中,主要分布在前列腺上皮细胞、间质细胞。（２）前列腺上皮组织中ＡＲｍＲＮＡ表达具区域异质性的特点;部分增生前列腺的腺上皮基底层（ＢＣＬ）细胞阳性表达增强,ＮＡＰ组未发现此现象。（３）图像分析表明无论是ＮＡＰ还是ＢＰＨ,ＡＲｍＲＮＡ在腺上皮的阳性表达强度均强于间质。而ＮＡＰ与ＢＰＨ之间阳性表达强度无显著差异。     

用表达重组TSH受体的CHO细胞测定Graves'甲亢病人血清中的TSAb

用表达重组人ＴＳＨ受体的中国仓鼠卵细胞（Ｃｈｉｎｅｓｅｈａｍｓｔｅｒｏｖａｒｙｃｅｌ,ＣＨＯ）细胞代替传统的ＦＲＴＬ－５细胞测定Ｇｒａｖｅｓ甲亢病人的血清甲状腺刺激抗体（ＴｈｙｒｏｉｄＳｔｉｍｕｌａｔｉｎｇＡｎｔｉｂｏｄｙ,ＴＳＡｂ）水平,方法相对简单,特异性强,敏感性高,未治疗的Ｇｒａｖｅｓ病人９２．７％阳性,治疗后迅速下降,恢复期的阳性率为３５％,该方法对Ｇｒａｖｅｓ甲亢的诊断、治疗后效果的判断有重要意义。     

CREATE TRANSGENIC RABBITS BY MICROINJECTING HUMAN apoA-ⅡGENE INTO FERTILIZED EGGS

Objective To create transgenic rabbits by microinjecting human apolipoprotein A-Ⅱ (apoA-Ⅱ) gene into one-cell embryos, to study apoA-Ⅱ gene function on plasma lipoprotein metabolism and atherosclerosis. Methods Superovulation and synchronization of estrus were induced in female Japanese White Rabbits by injecting hormone, then mating with male. After collected the fertilized eggs, the human apoA-Ⅱ gene was microinjected into the male pronucleus of eggs. The injected eggs were transferred into recipient female rabbits. Last, extract DNA from the new borns ear and determine whether the newborns were transgenic by polymerase chain reaction (PCR) or Southern blot analysis. Results A total of 822 embryos with microinjection of human apoAⅡ gene were implanted into 28 recipient rabbits. The number of surviving newborns was 37. 3 transgenic positive surviving founders were found with human apoA-Ⅱ.     

雌、孕激素受体和rasP~(21)蛋白的表达在乳腺癌预后中的意义

用酶联亲合组化法和ABC免疫组化法对93例乳腺癌石蜡标本中雌激素受体(ER)、孕激素受体(PR)和ras P~(21)蛋白进行了检测和对比研究。经果表明:ER、PR阳性率分别为64.52％和60.22％,经随访5年累积无瘤生存率阳性组高于阴性组(P<0.05);P~(21)蛋白的阳性表达率为52.69％,多出现在分化差的Ⅱ、Ⅲ级具有浸润性的乳腺癌组织中,随乳腺癌组织学分级的增加而增强,与ER水平呈负相关,5年累积无瘤生存率阴性组高于阳性组(P<0.05)。认为P~(21)蛋白表达的强弱同ER、PR一样反映了乳腺癌的生物学特性及预后。     

用间接荧光抗体法检测白细胞间介素2受体

本实验用间接荧光抗体法检测了30名正常人淋巴细胞膜上白细胞间介素2受体(IL-2R)的表达情况,并对影响因素进行了探讨。结果发现随PHA 刺激量增大,IL-2R 表达量也增加;用同一PHA 刺激量时,IL-2R 表达与细胞浓度有关,在细胞浓度为1×10~9细胞/L 时,受体表达最为充分。1×10~9细胞/L 的淋巴细胞悬液经100mg/L PHA 刺激培养24、48和72小时后,IL-2R 表达阳性率分别为52.92±9.11%,72.80±8.12%和87.26±6.09%。本法操作较为简便,适用于临床免疫学检查。     

ENHANCEMENT OF DNA SYNTHESIS IN CULTURED ADULT RAT HEPATOCYTES BY 5-HT THROUGH STIMULATION OF 5-HT2 RECEPTOR

Ａｌｔｈｏｕｇｈａｄｕｌｔｍａｍｍａｌｉａｎｈｅｐａｔｏ－ｃｙｔｅｓａｒｅｈｉｇｈｌｙｄｉｆｅｒｅｎｔｉａｔｅｄａｎｄｎｏｎｐｒｏ－ｌｉｆｅｒａｔｉｎｇｃｅｌｓ,ｔｈｅｐｒｉｍａｒｙｃｕｌｔｕｒｅｓｏｆａｄｕｌｔｒａｔｈｅｐａｔｏｃｙｔｅｓｃａｎｂｅ...     

聚合酶链反应检测弓形虫核酸的研究

应用聚合酶链反应（ＰＣＲ）技术，设计了一对寡核苷酸引物，对弓形虫Ｂ１基因的保守序列进行体外扩增，显示该引物只对弓形虫核酸扩增，可对４个或４个以上弓形虫扩增出明显条带，检测弓形虫核酸的最低量为２．５ｐｇ。该ＰＣＲ对急性感染弓形虫的小鼠，于４８ｈ后就可从部分小鼠（２／５）的外周血中检测到弓形虫核酸，９６ｈ后全部小鼠（５／５）外周血中均检测到弓形虫核酸，而感染２４ｈ后可从其肝、脾、肾等组织中扩增到弓形虫核酸。对３４例孕妇外周血分别用ＥＬＩＳＡ及ＰＣＲ平行检测，ＥＬＩＳＡ测ＩｇＭ阳性者３例，ＰＣＲ扩增阳性者６例（其中３例ＩｇＭ亦阳性），表明ＰＣＲ具有较高的敏感性和特异性。     

PCR法区别HBVRC－和CCC－DNA

乙型肝炎病毒（ＨＢＶ）的基因组为一松弛环状、部分双链的ＤＮＡ（ＲＣ－ＤＮＡ）。在其负链的５＇与３＇端之间存在一缺口。当ＨＢＶ进入宿主细胞后，基因组转变为共价闭合环状ＤＮＡ（ＣＣＣ－ＤＮＡ）。我们根据ＨＢＶＲＣ－和ＣＣＣ－ＤＮＡ的结构特点，设计了ＰＣＲ区别ＲＣ－和ＣＣＣ－ＤＮＡ。实验表明，该方法可有效地区别两种形式的ＨＢＶＤＮＡ。     

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...     

甲状腺癌和雌、孕激素受体的研究

利用酶联亲和组化法检测80例甲状腺良恶性肿瘤雌、孕激素受体（ER，PR）。结果显示：ER，PR阳性率与肿瘤良恶性、分化程度、性别有关。提示：ER，PR可作为甲状腺癌的一个生物学标记，有助于预后判断。ER是影响女性甲状腺癌发病率的一个重要因素，ER，PR阳性细胞可为进一步研究雌、孕激素对甲状腺肿瘤的作用机制提供一个线索。     

DISTRIBUTION OF NOS-B1 IN THE MYENTERIC PLEXUS OFRABBIT SMALL BOWELS

Neuronalnitrcoxidesynthase(NOS)'isknowntoproducenitricoxide(NO)fromL--arginineinthepresenceofreducednicodineamideadeninedinucleotidphosphate(NADPH),calmodulin,andcalciumironstl].RecentpharmacologicalandphysiologicalstudieshaveproposedthatNOplayaroleasaneuronalmessengerofnonadrenergic,non-cholinergic(NANC)relaxationinthegastrointestinaltractinvariousmammalst2.3i.AlthoughneuronalNOShasbeenshowntobeidenticaltoneuronalNADPHdiaphoraseinthebrainoftherate.,.andmostofstudieshavereportedthatt…     

应用DNA PCR法扩增检测苯丙酮尿症基因突变

本文应用PCR和核酸杂交技术,在西安地区14例PKU患儿中检测了目前中国人中唯一确定引起PKU的PAH基因外显子3终止突变,结果发现这些患者的PAH基因均无终止突变,提示在我国有可能因PAH基因其它部位突变导致PKU的发生。我们体会DNA体外PCR扩增结合寡核苷酸探针点杂交方法可用于PKU的产前诊断和携带者检出。     

雌激素受体在肝海绵状血管瘤中的表达及意义

采用免疫组化Ｓ Ｐ法检测３０ 例肝海绵状血管瘤（Ｃａｖｅｒｎｏｕｓ ｈｅｍ ａｎｊｉｏｍ ａｏｆｌｉｖｅｒ,ＣＨＬ）组织中雌激素受体（Ｅｓｔｒｏｓｅｎ ｒｅｃｅｐｔｏｒ, ＥＲ）的表达,并以ＣＨＬ瘤旁正常肝组织作对照。结果ＥＲ 阳性表达于ＣＨＬ 血窦内皮细胞胞浆中,阳性率为４３３％ ;ＣＨＬ瘤旁正常肝组织中未见表达（ Ｐ＜ ０．０５）。提示肝海绵状血管瘤的生长与雌激素有关。雌激素可能通过其受体作用促进ＣＨＬ生长     

THE EFFECT OF FCγ RECEPTOR ON THE PATHOGENESIS OF GRAVES'' DISEASE

Objective To explore the roles of Fcγ receptor in the pathogenesis of Graves' disease. Methods Fcγ receptor gene knockout mice(Fcγ R KO mice) which were rooted in C57BL/6 mice and wild type C57BL/6 mice were immunized by hTSH receptor expressing cells (DAP3.WT).1-2×107 DAP3.WT cells were peritoneally injected into mice every two weeks for a total of six times.Two weeks after final immunization, mice were killed for measurement of total thyroxine,TRAb and pathological examination.Results The thyroxine level of the immunized Fcγ receptor gene knockout mice was significantly lower than that of the immunized wild type control mice (2.2±0.31 vs.3.32±0.59g·dL-1,P<0.05), but there was no significant difference between immunized Fcγ R KO mice and non-immunized wild type control group.The TRAb levels of the immunized Fγ R KO mice significantly increased compared to those of the immunized wild type mice (21.75±8.21 vs.14.11±6.21, P<0.05). The lymphocyte cells infiltration and destruction of thyroid follicles were found in the thyroid gland of the immunized Fcγ R KO mice. Conclusion　These results suggest that Fcγ receptor may be involved in the pathogenesis of Graves'disease.     

肺癌组织中性激素受体的研究

为研究肺癌与性激素及其受体之间的关系，运用酶联亲合组化法对53例肺癌组织中雌激素受体（ER）和孕激素受体（PR）进行了检测。结果：ER、PR阳性率分别为49．1％、54．7％，其阳性颗粒大部分位于癌细胞浆中（占58．2％）；早、中期患者的ER及PR阳性率较高；鳞癌PR阳性率（73．1％）高于小细胞癌（33．3％），腺癌ER阳性率较高，细胞分化好的ER阳性率较高（60％）。提示ER、PR存在于部分肺癌组织中，癌的发生和发展与性激素的影响有一定的关系。