DBH基因和α_(-2B)AR基因多态性与原发性高血压的相关性研究

目的研究多巴胺β羟化酶(DBH)基因启动子区的19 bp Insert/Delet位点和α-2B肾上腺素能受体(α-2BAR)基因12Glu9位点与原发性高血压的相关性。方法选取原发性高血压患者196例,健康体检者121例,检测DBH基因启动子区的19 bp Insert/Delet位点和α-2BAR基因12Glu9位点多态性。结果 19 bp Insert/Delet位点和12Glu9位点的基因型和等位基因频率在病例组与对照组差异没有统计学意义(P>0.05);19 bpInsert/Delet位点和12Glu9位点的基因型对收缩压、舒张压、Na+浓度、体质量指数、K+浓度和C1-浓度变化的影响差异无统计学意义(P>0.05)。结论 DBH基因和α-2BAR基因在该人群中可能与原发性高血压和有关离子浓度变化无关。

THE IMPACT OF ACUTE DYNAMIC EX-ERCISE ON INTRAOCULAR PRESSURE VARIATIONS: THE ROLE OF THE BETA- 2 -ADRENERGIC RECEPTOR POLYMOR- PHISM

Aim: To investigate the effects of Argl6Gly mutation in the beta-two adrenergic receptor (B2AR) gene on intraocular pressure (IOP) response to acute dynamic execise, nineteen healthy male adult (median age 22.6±2.8 years) were participated in this study. Methods: The subjects performed exercise testing as Shuttle Run Test (20 meter) which was conducted at

Induction of anti-hepatoma immunity by recombinant retrovirus expressing B7-1 /B7-2 costimulatory molecules

Objective: To construct recombinant R7-l/B7-2 retrovirus vectors and observe the effects of B7-l/R7-2 gene expression on in ho and in for immune response against against murine hepatoma. Methods: The recombinant retrovirus vectors expressing B7-1/B7-2 were constructed by gene cloning technology to produce retrovirus-infected PE501 and PA317 cell lines and murine hepatoma Hepal-6. The expression of R7-l/B7-2 was detected by fluorescence activated cell soning analysis (FACS). B7-l/B7-2 positive Hepal-6 Cell lines were used in inducing anti-hepatoma immunity in ho and in the. Results: In contrast to the excessive growth of parental Hemal-6 tumor, the growth of B7-l/B7-2-positive Hepal-6 inoculated into syngenic mice regressed. B7-1/R7-2-positive or cytokine-treated Hepal-6 alone could only induce mild cytototicity; in contrast, B7-1/B7-2-positive Hemal-6 treated with cytokine-stimulated spleen cells and activated the cytotoxicity effectively. Immunity in mice with R7-1/B7-2-positive tumor cells or cytokine-beated Hepal-6 only provided partial protection against parental Hepa1-6 tumor, whereas pretreatment of the transfected tumor cells with IFN-r and TNF-a induced complete immunity protection in vivo. Mice receiving inoculation of cytokine-treated B7-l/R7-2-positive Hemal-6 cells presented regression of the establoshed pental tUmor and survived for more than l00 d, while those untreated mice died within 40 d. Conclu sions: B7-l/R7-2 expression is necessary but not sufficient in inducing anti-hepatoma immune response, whereas it is efficient when combined with the beatment of IFN-γ and TNF-a.

101B对人毛乳头细胞增殖及4种脱发相关基因表达的影响

目的:通过检测101B对体外培养人毛乳头细胞增殖及脱发相关基因表达的影响,分析其可能的抗雄激素性秃发(AGA)效果。方法:体外培养人毛乳头细胞经101B[对照二氢睾酮(DHT)]处理后,采用Cell Counting Kit-8(CCK-8)法检测细胞增殖变化,并筛选4个基因通过实时荧光定量PCR(RT-PCR)方法检测其表达量。结果:101B能促进毛乳头细胞的增殖,0.4%作用浓度下细胞增殖率提高30%;101B抑制5α-还原酶2(SRD5A2)、雄激素受体(AR)、凋亡因子p53与转化生长因子(TGF)-β2的表达,0.5%作用浓度下p53与AR的RNA表达量较空白对照降低40%以上,而101B与DHT共同处理毛乳头细胞能显著抑制DHT对SRD5A2表达的激活作用。结论:101B在体外培养人毛乳头细胞中能通过抑制SRD5A2、AR、p53与TGF-β2基因的作用来发挥抗雄激素的作用。

左归丸拆方通过调节β2-AR介导的OPG/RANKL信号通路提高去卵巢大鼠骨密度

目的:探讨左归丸及其拆方治疗绝经后骨质疏松症(PMOP)的作用机制。方法:去卵巢法建立骨质疏松症模型,将40只SD大鼠平均随机分为假手术组,模型组(0.1 mL·kg^-1·d^-1),17β-雌二醇组(50μg·kg^-1·d^-1)和左归丸补阳药低、高剂量(0.55,1.1 g·kg^-1·d^-1)组。灌胃给药12周后,显微CT(μ-CT)检测右侧远端股骨骨密度(BMD)及显微结构;苏木精-伊红(HE)染色观察大鼠股骨形态学变化;酶联免疫吸附法(ELISA)检测大鼠血清中Ⅰ型胶原交联羧基端肽(β-CTX)和骨特异性碱性磷酸酶(BALP)浓度;实时荧光定量聚合酶链式反应(Real-time PCR)和蛋白免疫印迹法(Western blot)检测大鼠下丘脑β2-肾上腺素能受体(β2AR),胫骨平台骨保护素(OPG)和核转录因子-κB受体激活因子配体(RANKL)蛋白及mRNA表达水平。结果:与假手术组相比,模型组大鼠BMD显著下降(P<0.01),骨组织形态破坏;血清BALP含量降低,β-CTX含量升高(P<0.01);下丘脑β2AR,胫骨RANKL mRNA及蛋白表达量升高(P<0.05,P<0.01),胫骨OPG mRNA及蛋白表达量降低(P<0.05,P<0.01)。治疗后,与模型组比较,各用药组大鼠BMD升高(P<0.01),骨组织形态改善;血清BALP含量升高,β-CTX含量降低(P<0.01);下丘脑β2AR,胫骨RANKL mRNA及蛋白表达降低(P<0.05,P<0.01),胫骨平台OPG mRNA和蛋白表达升高(P<0.05,P<0.01)。结论:左归丸拆方中补阳药能通过调节β2AR介导的OPG/RANKL信号通路提高去卵巢大鼠骨密度,"阳中求阴"配伍特点是左归丸治疗PMOP的关键之一。

左归丸调节β2AR介导的RANKL/OPG信号通路改善去卵巢大鼠骨量和显微结构水平

目的:探讨左归丸治疗绝经后骨质疏松症的分子机制之一是通过对β2-肾上腺素能受体(β2AR)介导的核转录因子-κB受体激活因子配体(RANKL)/骨保护素(OPG)信号通路的调节。方法:通过去卵巢法建立骨质疏松模型,将40只雌性SPF级SD大鼠随机分为模型组、假手术组、雌二醇(50μg·kg-1·d-1)组、左归丸低、高剂量(2. 3,4. 6 g·kg-1)组。采用酶联免疫吸附实验检测血清骨转换标志物;显微CT对右侧股骨远端骨密度水平和骨小梁微结构进行测量和分析;实时荧光定量聚合酶链式反应(Real-time PCR)和蛋白免疫印迹法(Western blot)检测胫骨和下丘脑组织中β2AR,OPG,RANK mRNA和蛋白表达水平。结果:与模型组比较,左归丸可显著降低大鼠血清中Ⅰ型胶原交联羧基端肽(β-CTX)水平(P <0. 01),增加骨特异性碱性磷酸酶(BALP)水平(P <0. 01),减少卵巢摘除诱导引起的大鼠骨量丢失,改善股骨远端骨小梁显微结构水平。同时,左归丸高、低剂量组均能显著上调胫骨组织中OPG mRNA和蛋白表达(P <0. 01),下调下丘脑组织β2AR mRNA和蛋白表达水平(P <0. 01),同时也能显著下调胫骨组织中RANKL mRNA和蛋白表达水平(P <0. 01)。结论:左归丸改善围绝经期综合症,增加骨量和改善骨小梁显微结构水平的分子机制可能与对β2AR介导的RANKL/OPG信号通路的调节有关。