><FONT size=5>镇银膏药理学报告之一:镇银膏对雌激素期阴道上皮细胞有丝分裂的影响(山东医科大学)</FONT></P></TD></TR>
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align=center><FONT size=5><B></B><B><o:p></o:p></B></FONT></P><FONT size=5><B>摘要</B><FONT face="Times New Roman"> </FONT>银屑病(牛皮癣)为常见的皮肤病之一,国内外研究较多,但尚未找出理想的治疗药物。迄今为止,银屑病还没有实际应用的动物疾病模型,但已有若干种可用于药物研究的实验动物模型,这些模型模拟了银屑病的主要病理生理特点。<FONT face="Times New Roman">Bonder</FONT>和<FONT face="Times New Roman">Van Scott</FONT>提出的鼠尾鳞片表皮模型,<FONT face="Times New Roman">Jarrett</FONT>上和<FONT face="Times New Roman">Spearman</FONT>提出的小鼠阴道上皮模型,即是这些模型中的二种。 <br></FONT>
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><FONT size=5>银屑病表皮的病理生理特点是增生过快和分化不全,雌激素周期的小鼠阴道上皮增生活跃,有丝分裂增多,细胞转换加快,模拟了银屑病表皮增生过快的特点。而鼠尾鳞片表皮的角化缺少颗粒层形成的过程,模拟了银屑病表皮角化不全的特点。有人认为银屑病与机体免疫功能异常有关。我们采用上述二种动物模型试验了镇银膏对银屑病的治疗作用。结果表明,镇银膏高、中、低剂量对小鼠及大鼠阴道上皮细胞有丝分裂均有明显的抑制作用;高、中剂量对小鼠尾鳞片颗粒细胞层的形成有明显的促进作用,低剂量作用不明显与空白对照组比较无显著性差异。镇银膏也可明显提高小鼠外周血<FONT face="Times New Roman">T</FONT>淋巴细胞的活性并可非常显著的增强小鼠<FONT face="Times New Roman">NK</FONT>细胞杀伤靶细胞的活性。</FONT></P></TD></TR></TABLE></FONT>
0cm 0cm 0pt; mso-outline-level: 1"><B normal">一、试验目的</B><B normal"><o:p></o:p></B></P>
0cm 0cm 0pt; mso-outline-level: 1"><FONT face="Times New Roman"> </FONT>通过动物模型实验,确证镇银膏对银屑病治疗的有效性,并了解产生疗效的剂量,为临床实验提供依据。</P>
0cm 0cm 0pt; mso-outline-level: 1"><B normal">二、受试药物</B><B normal"><o:p></o:p></B></P>
0cm 0cm 0pt; mso-outline-level: 1"><FONT face="Times New Roman"> </FONT>(一)名称:镇银膏</P>
0cm 0cm 0pt"><FONT face="Times New Roman"> </FONT>(二)提供单位:山东淄川第二制药厂亓镇大夫。</P>
0cm 0cm 0pt"><FONT face="Times New Roman"> </FONT>(三)编号或批号:<FONT face="Times New Roman"> 930918</FONT></P>
0cm 0cm 0pt"><FONT face="Times New Roman"> </FONT>(四)含量、效价、制剂标示量,<st1:chmetcnv UnitName="g" SourceValue="0.95" HasSpace="False" Negative="False" NumberType="1" TCSC="0" w:st="on"><FONT face="Times New Roman">0.95g</FONT></st1:chmetcnv>/<FONT face="Times New Roman">ml</FONT>。</P>
0cm 0cm 0pt"><FONT face="Times New Roman"> </FONT>(五)溶剂:芝麻油</P>
0cm 0cm 0pt; mso-outline-level: 1"><B normal">三、动物</B><B normal"><o:p></o:p></B></P>
0cm 0cm 0pt; mso-outline-level: 1"><FONT face="Times New Roman"> </FONT>(一)来源、种属、品系、合格证</P>
0cm 0cm 0pt; mso-outline-level: 1"><B normal">五、试验主要步骤</B><B normal"><o:p></o:p></B></P>
0cm 0cm 0pt; mso-outline-level: 1"><FONT face="Times New Roman"> </FONT>(一)有效量的确定</P>
0cm 0cm 0pt; mso-outline-level: 1"><FONT face="Times New Roman"> </FONT>高剂量为<FONT face="Times New Roman">LD<SUB>50</SUB></FONT>的<FONT face="Times New Roman">1/6</FONT>量</P>
0cm 0cm 0pt"><FONT face="Times New Roman"> </FONT>中剂量为<FONT face="Times New Roman">LD<SUB>50</SUB></FONT>的<FONT face="Times New Roman">1/12</FONT>量</P>
0cm 0cm 0pt"><FONT face="Times New Roman"> </FONT>低剂量为<FONT face="Times New Roman">LD<SUB>50</SUB></FONT>的<FONT face="Times New Roman">1/24</FONT>量</P>
0cm 0cm 0pt; mso-outline-level: 1"><FONT face="Times New Roman"> </FONT>(二)镇银膏对雌激素期阴道上皮细胞有丝分裂的影响。</P>
0cm 0cm 0pt"><FONT face="Times New Roman"> 1</FONT>.对小鼠雌激素期阴道上皮细胞有丝分裂的影响。</P>
0cm 0cm 0pt"><FONT face="Times New Roman"> </FONT>(<FONT face="Times New Roman">1</FONT>)试验方法:取昆明种小鼠<FONT face="Times New Roman">60</FONT>只,体重<FONT face="Times New Roman">20</FONT>~<st1:chmetcnv UnitName="g" SourceValue="25" HasSpace="False" Negative="False" NumberType="1" TCSC="0" w:st="on"><FONT face="Times New Roman">25g</FONT></st1:chmetcnv>,雌性,随机分为<FONT face="Times New Roman">6</FONT>组,每只小鼠均背部剃毛约<FONT face="Times New Roman"><st1:chmetcnv UnitName="cm" SourceValue="3" HasSpace="False" Negative="False" NumberType="1" TCSC="0" w:st="on">3cm</st1:chmetcnv><SUP>2</SUP></FONT>。第<FONT face="Times New Roman">1</FONT>组为空白对照组于背部剃毛处涂抹芝麻油<FONT face="Times New Roman">0.05ml</FONT>/<st1:chmetcnv UnitName="g" SourceValue="10" HasSpace="False" Negative="False" NumberType="1" TCSC="0" w:st="on"><FONT face="Times New Roman">10g</FONT></st1:chmetcnv>;第<FONT face="Times New Roman">2</FONT>~<FONT face="Times New Roman">4</FONT>组为镇银膏高、中、低剂量组,于背部剃毛处分别涂抹<FONT face="Times New Roman">0.1</FONT>,<FONT face="Times New Roman">0.05</FONT>和<FONT face="Times New Roman">0.025ml</FONT>/<st1:chmetcnv UnitName="g" SourceValue="10" HasSpace="False" Negative="False" NumberType="1" TCSC="0" w:st="on"><FONT face="Times New Roman">10g</FONT></st1:chmetcnv>,第<FONT face="Times New Roman">5</FONT>组为去炎松组,于背部剃毛处涂抹去炎松软膏<FONT face="Times New Roman">0.0075mg</FONT>/<st1:chmetcnv UnitName="g" SourceValue="10" HasSpace="False" Negative="False" NumberType="1" TCSC="0" w:st="on"><FONT face="Times New Roman">10g</FONT></st1:chmetcnv>。均隔日给药<FONT face="Times New Roman">1</FONT>次,共<FONT face="Times New Roman">7</FONT>次,在给药第<FONT face="Times New Roman">5</FONT>次后,给每只小鼠<FONT face="Times New Roman">ip</FONT>乙烯雌酚,每次<FONT face="Times New Roman">0.2mg</FONT>,每日<FONT face="Times New Roman">1</FONT>次,连续注射<FONT face="Times New Roman">3</FONT>天。第<FONT face="Times New Roman">6</FONT>组为氨甲喋呤组于给乙烯雌酚<FONT face="Times New Roman">3</FONT>天后,给予<FONT face="Times New Roman">ip</FONT>氨甲碟呤<FONT face="Times New Roman">0.1mg</FONT>/<st1:chmetcnv UnitName="g" SourceValue="10" HasSpace="False" Negative="False" NumberType="1" TCSC="0" w:st="on"><FONT face="Times New Roman">10g</FONT></st1:chmetcnv>,每天<FONT face="Times New Roman">1</FONT>次,共<FONT face="Times New Roman">3</FONT>次。为了避免细胞有丝分裂的日夜节律对数据的影响,最后<FONT face="Times New Roman">1</FONT>次给药统一规定在上午<FONT face="Times New Roman">8</FONT>时,上午<FONT face="Times New Roman">9</FONT>时<FONT face="Times New Roman">ip</FONT>秋水仙碱<FONT face="Times New Roman">2mg</FONT>/<FONT face="Times New Roman">kg</FONT>,使有丝分裂停止于<FONT face="Times New Roman">M</FONT>期的中期而便于计数。下午<FONT face="Times New Roman">2</FONT>时杀死小鼠,取阴道标本以<FONT face="Times New Roman">10</FONT>%福尔马林固定,石腊包埋,<FONT face="Times New Roman">HE</FONT>染色,用光学显微镜观察细胞有丝分裂,计数<FONT face="Times New Roman">500</FONT>个基底细胞中的有丝分裂数,折算出每<FONT face="Times New Roman">100</FONT>个基底细胞的有丝分裂数,称为有丝分裂指数。将实验组和对照组的有丝分裂指数作比较,进行统计学处理。</P>
0cm 0cm 0pt"><FONT face="Times New Roman"> </FONT>(<FONT face="Times New Roman">2</FONT>)给药途径<FONT face="Times New Roman"> </FONT>皮肤</P>
0cm 0cm 0pt"><FONT face="Times New Roman"> </FONT>(<FONT face="Times New Roman">3</FONT>)给药次数<FONT face="Times New Roman"> </FONT>隔日<FONT face="Times New Roman">1</FONT>次,共<FONT face="Times New Roman">7</FONT>次。</P>
0cm 0cm 0pt 5.85pt">组<FONT face="Times New Roman"> </FONT>别</P></TD>
0cm 0cm 0pt"><FONT face="Times New Roman"> </FONT>动<FONT face="Times New Roman"> </FONT>物<FONT face="Times New Roman"> </FONT>数</P></TD>
0cm 0cm 0pt">阴道上皮细胞有丝分裂指数</P>
0cm 0cm 0pt"><FONT face="Times New Roman"> </FONT>(<FONT face="Times New Roman">x</FONT>±<FONT face="Times New Roman">s</FONT>)</P></TD></TR>
0cm 0cm 0pt">空白对照组</P>
0cm 0cm 0pt">镇银膏高剂量组</P>
0cm 0cm 0pt">镇银膏中剂量组</P>
0cm 0cm 0pt">镇银膏低剂量组</P>
0cm 0cm 0pt">去炎松软膏组</P>
0cm 0cm 0pt">氨甲喋呤组</P></TD>| 欢迎光临 银屑病病友互助网 (https://www.yxb365.com/) | Powered by Discuz! X3.2 |