REGULATION OF PRODUCTION OF PARATHYROID HORMONE－RELATED PEPTIDE （PTHrP） AND EXPRESSION OF ITS mRNA IN A HUMANLIVER－DERIVED CE

ＲＥＧＵＬＡＴＩＯＮＯＦＰＲＯＤＵＣＴＩＯＮＯＦＰＡＲＡＴＨＹＲＯＩＤＨＯＲＭＯＮＥ－ＲＥＬＡＴＥＤＰＥＰＴＩＤＥ（ＰＴＨｒＰ）ＡＮＤＥＸＰＲＥＳＳＩＯＮＯＦＩＴＳｍＲＮＡＩＮＡＨＵＭＡＮＬＩＶＥＲ－ＤＥＲＩＶＥＤＣＥＬＬＬＩＮＥＬｉＨｕｓｏｎｇ；Ｐ...     

PRODUCTION OF PARATHYROID HORMONE－RELATED PROTEIN （PTHrP） BY A HUMAN HEPATOMA CELL LINE

ＰＲＯＤＵＣＴＩＯＮＯＦＰＡＲＡＴＨＹＲＯＩＤＨＯＲＭＯＮＥ－ＲＥＬＡＴＥＤＰＲＯＴＥＩＮ（ＰＴＨｒＰ）ＢＹＡＨＵＭＡＮＨＥＰＡＴＯＭＡＣＥＬＬＬＩＮＥＬｉＨｕｓｏｎｇ；ＰＫ．Ｓｅｉｔｚ，Ｐ．Ｓｅｌｖａｎａｙａｇａｍ，Ｓ．Ｒａｊａｒａｍａｎ，Ｃ．Ｃｏ...     

CHARACTERISTICS OF ACTIONPOTENTIAL AND THEIR UNDERLYING OUTWARD CURRENTS IN MAMMALIAN TASTE RECEPTOR CELLS

ＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＡＣＴＩＯＮＰＯＴＥＮＴＩＡＬＡＮＤＴＨＥＩＲＵＮＤＥＲＬＹＩＮＧＯＵＴＷＡＲＤＣＵＲＲＥＮＴＳＩＮＭＡＭＭＡＬＩＡＮＴＡＳＴＥＲＥＣＥＰＴＯＲＣＥＬＬＳＣｈｅｎＹｕｓｈｅ；Ｘ．Ｓｕｎ，Ｍ．Ｓ．Ｈｅｒｎｅｓｓ（Ｉｎｄ...     

ALTERATIONS IN THE PROTEIN SYNTHESIS AND CONTENTS OF RIBOSOME AND POLYSOME IN LIVEROF SELENIUM－DEFICIENT RATS

ＡＬＴＥＲＡＴＩＯＮＳＩＮＴＨＥＰＲＯＴＥＩＮＳＹＮＴＨＥＳＩＳＡＮＤＣＯＮＴＥＮＴＳＯＦＲＩＢＯＳＯＭＥＡＮＤＰＯＬＹＳＯＭＥＩＮＬＩＶＥＲＯＦＳＥＬＥＮＩＵＭ－ＤＥＦＩＣＩＥＮＴＲＡＴＳ（毕红），（李同良）（贾锡安），（赵君庸）ＢｉＨｏｎｇ；Ｌｉ...     

ISOLATION AND IDENTIFICATION OF THE RELATED GENE MEDIATING γ-RADIATION-INDUCED APOPTOSIS IN HUMAN HL- 60 CELLS

ISOLATION AND IDENTIFICATION OF THE RELATED GENE MEDIATING γ-RADIATION-INDUCED APOPTOSIS IN HUMAN HL- 60 CELLS     

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...     

OKT_（10） POSITIVE CELLS IN PERIPHERAL BLOOD OF MULTIPLE MYELOMA AND MALIGNANT LYMPHOMA

ＯＫＴ_（１０）ＰＯＳＩＴＩＶＥＣＥＬＬＳＩＮＰＥＲＩＰＨＥＲＡＬＢＬＯＯＤＯＦＭＵＬＴＩＰＬＥ　ＭＹＥＬＯＭＡＡＮＤＭＡＬＩＧＮＡＮＴＬＹＭＰＨＯＭＡＺｈｅｎｇＣｈｅｎｇｙｕｎ；ＣｈｅｎＫａｉｊｕｎ；ＳｋａｏＷｅｎｂｉｎ；（Ｄｅｐａｒｔｍｅｎｔｏｆ?..     

APPLICATION OF HMB－45 MONOCLONAL ANTIBODY AND S100 PROTEIN IN THE IMMUNOHISTOCHEMICAL DIAGNOSIS OF MELANOMA

ＡＰＰＬＩＣＡＴＩＯＮＯＦＨＭＢ－４５ＭＯＮＯＣＬＯＮＡＬＡＮＴＩＢＯＤＹＡＮＤＳ１００ＰＲＯＴＥＩＮＩＮＴＨＥＩＭＭＵＮＯＨＩＳＴＯＣＨＥＭＩＣＡＬＤＩＡＧＮＯＳＩＳＯＦＭＥＬＡＮＯＭＡＬｉｕＤａｎｙａ（刘丹亚）；ＳｕＢａｏｓｈａｎ（苏宝山）；Ｘｕ...     

STUDY OF T－LYMPHOCYTE SUBSETS AND INTERLEUKIN－2 AND INTERLEUKIN－2 RECEPTOR OF RESPIRATORY SYNCYTIAL VIRUS PNEUMONIA

ＳＴＵＤＹＯＦＴ－ＬＹＭＰＨＯＣＹＴＥＳＵＢＳＥＴＳＡＮＤＩＮＴＥＲＬＥＵＫＩＮ－２ＡＮＤＩＮＴＥＲＬＥＵＫＩＮ－２ＲＥＣＥＰＴＯＲＯＦＲＥＳＰＩＲＡＴＯＲＹＳＹＮＣＹＴＩＡＬＶＩＲＵＳＰＮＥＵＭＯＮＩＡＷｅｉＪｕｎ；Ｚｈａｏｐｅｉｘｉａ；ＹａｎｇＳ...     

PROPERTIES OF PROLIFERATION AND DIFFERENTIATION OF NEONATAL RAT RETINAL PROGENITOR CELLS IN VITRO

Objective To investigate the properties of proliferation and differentiation of neonatal rat retinal progenitor cells （RPCs） in vitro. Methods RPCs were isolated from neonatal SD rats neural retina and cultured in DMEM/F12 ＋ N2 with EGF and bFGF （suspension medium ） or 10 % FBS without EGF and bFGF （ differentiation medium）. The cells grew as suspended spheres or adherent monolayers, depending on different culture conditions. The neural stem cells or retinal progenitors, neurons, astrocytes, retinal ganglion cells, rod photoreceptors and the proliferating cells were evaluated with immunofluorescence analysis by Nestin or Pax6, Map2, GFAP, Thy-1, Rhodopsin and BrdU antibodies respectively. Results RPCs could propagate and differentiate in suspension or differentiation medium and express the markers of Nestin （92.86%） or Pax6 （86.75%）, Map2 （38.54%）, GFAP （20.93%）, Thy-1 （27. 66%） and Rhodopsin（13. 33%）in suspension medium; however, Nestin （60.27%）, Pax6 （52%）, Map2 （34.94%）, GFAP （38.17%）, Thy-1 （30.84%） and Rhodopsin （34.67%） in differentiation medium. 96.4 % of the population in the neurospheres was BrdU-positive cells. The cells could spontaneously adherent forming some subspheres and retinal specific cell types. Conclusion Neonatal rat RPCs possess the high degree of proliferation and can differentiate into neurons, astrocytes, retinal ganglion cells and rod photoreceptors in vitro. There are different proportions for RPCs to differentiate into specific cell types.     

SUPPRESSION OF GROWTH OF A HUMAN LIVER－DERIVED CELL LINE BY ENDOGENOUSLY PRODUCED PARATHYROID HORMONE－RELATED PEPTIDE

ＳＵＰＰＲＥＳＳＩＯＮＯＦＧＲＯＷＴＨＯＦＡＨＵＭＡＮＬＩＶＥＲ－ＤＥＲＩＶＥＤＣＥＬＬＬＩＮＥＢＹＥＮＤＯＧＥＮＯＵＳＬＹＰＲＯＤＵＣＥＤＰＡＲＡＴＨＹＲＯＩＤＨＯＲＭＯＮＥ－ＲＥＬＡＴＥＤ　ＰＥＰＴＩＤＥＬＩＨｕｓｏｎｇ；Ｐ．Ｋ．Ｓｅｉｔｚ，Ｐ．...     

ADENO-ASSOCIATED VIRUS INTRODUCED INTEGRATION AND EXPRESSION OF FOREIGN GENES IN PC12 CELLS

The ability to induce the expression of targetgenes in neurons is a goal of molecular neurobiolo-gy up to now. A variety of means including lipo-somes and recombinant retrovirus vectors and re-combinant adenovirus vectors have been used to ac-coplish this goal. Each method has some specificdisadvantages['J. None can provide reliable andcontinuouk gene expression in neurons of the cen-tral nervous system.Vectors derived from adeno--associaed virus(AAV ) have the potential to stably transducem…     

IN VITRO CO-STIMULATORY ACTIVITY OF HUMAN B7.2(IgV+C)PROTEIN PRODUCED BY ENGINEERED BACTERIA

It was well known that "two signals" wereboth necessary to activate T lymphocytes. The firstsignal was provided by TCR--CD, which was en-gaged with antigen peptide--MHC complex, and thesecond, also named the costimulatory signal, wasprovided by the interaction between costimulatorymolecules B7. l and B7. 2 on antigen presenting celland its counter--receptor CD28/CTLA4 on T cell.The first signal alone without costimulation willlead T cell to anergy or apoptosis['~'2. B7. 2 mayplay a cri…     

pSVL/GM-CSF真核表达质粒的构建及其表达活性观察

以真核瞬时表达质粒ｐＳＶＬ为载体构建ｐＳＶＬ／ＧＭ－ＣＳＦ真核表达质粒,用电穿孔法导入Ｃｏｓ－７细胞,以ＧＭ－ＣＳＦ依赖株ＴＦ１为靶细胞,检测其生物学活性;将不同剂量的ＰＳＶＬ／ＧＭ－ＣＳＦ质粒直接注射Ｂａ１ｂ／Ｃ小鼠股四头肌,动态观察小鼠血清中ＧＭ－ＣＳＦ的表达;将ｐＳＶＬ／ＧＭ－ＣＳＦ质粒导入Ｋ５６２细胞,观察ＧＭ－ＣＳＦ对瘤细胞生长状态的影响。结果表明：构建的ｐＳＶＬ／ＧＭ－ＣＳＦ真核表达质粒可在Ｃｏｓ－７细胞中有效表达ＧＭ－ＣＳＦ;小鼠骨骼肌直接注射ｐＳＶＬ／ＧＭ－ＣＳＦ（１００μｇ／及２００μｇ）,在血清中可检出ＧＭ－ＣＳＦ,在１０～１５ｄ达高峰（８Ｕ／ｍｌ）,为临床应用提供了实验基础;导入ＧＭ－ＣＳＦ基因的Ｋ５６２细胞可表达ＧＭ－ＣＳＦ,且经ＧＭ－ＣＳＦ基因修饰的Ｋ５６２细胞增殖状态明显优于对照组,提示对造血细胞肿瘤单用ＧＭ－ＣＳＦ应慎重,而与其它细胞因子联合应用可能是一个合理的方案。     

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。     

阿霉素对大鼠心肌细胞膜磷脂损伤及CoQ_(10)的保护作用

用电镜方法观察阿霉素（ADR）对心肌细胞膜磷脂损伤及CoQ10的保护作用。结果显示：ADR大鼠心脏心肌细胞依ADR累积量均呈现线粒体明显增生，线粒体膜磷脂不同程度脱失；血浆及心肌丙二醛（MDA），血浆乳酸脱氢酶（LDH）和肌酸磷酸激酶（CPK）升高，且与心功能及心脏大小相关。培养心肌细胞结构、培养液中MDA、LDH及CPK含量与ADR心脏改变一致。CoQ10干预后，心肌细胞线粒体增生程度减轻，线粒体膜磷脂损伤性改变得到修复。提示：ADR通过损伤心肌细胞及线粒体膜磷脂对心脏产生毒害作用。CoQ10对这种膜损伤有保护和修复作用。     

抗癌基因P~(53)蛋白在肺癌组织中的异常表达及意义

应用抗P53单克隆抗体DO－1，采用免疫组化ABC法对50例肺癌组织中P53蛋白的表达进行检测并取25例远癌肺组织作为对照。结果显示肺癌组织中P53蛋白的表达明显高于对照组；P53蛋白的表达与肺癌的分级、分期无关而与淋巴结转移及预后显著相关。提示P53蛋白的异常表达与肿瘤的恶性转化有关，P53蛋白可作为肺癌预后估计的指标。     

EXPRESSION OF HUMAN RECOMBINANT INTERLEUKIN-1 RECEPTOR ANTAGONIST (rhIL-1ra) IN E.COLI

ThisprojectissupportedbyChineseMedicalBoard(U.S.A)In1990,EisenbergisolatedacDNAfromthehumanmonocytelibrary,expressionofthecDNAinE.coltyieldedtheproteinthatcouldhinderIL--lbindingIL--lreceptor,hetermedtheproteininterleukin--1receptorantagonist(IL--lra)ti.23.IL--lraisauniquecytokinethatcanstronglybindthecellsurfacereceptorsofIL--Iwithoutinducinganydetectableintracellularresponses"'.SinceitisaneffectivecompetitiveinhibitorofIL--lbothinvitroandinvivot'3,IL--lraisausefultooltodetermineth…