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醋酸涂抹型胃溃疡寒热证模型的建立及相关性方剂影响的研究

Model Establishment of Acetic Acid Daub Ulcer Combined with Cold and Hot Syndrome and Study of Cold and Hot Formula on Formula and Syndrome Correlation

【作者】 赵伟国

【导师】 李冀;

【作者基本信息】 黑龙江中医药大学 , 方剂学, 2009, 博士

【摘要】 目的:探讨醋酸涂抹型胃溃疡寒、热证模型的形成机制及寒热方剂对胃溃疡寒、热证的基本作用机理和“方证相应”的客观规律。方法:采用寒(冰水+氢氧化钠)、热(辣椒+乙醇)因素与醋酸涂抹法结合分别建立大鼠胃溃疡寒、热证模型,采用生物化学、分子生物学方法、放射免疫方法、酶联免疫方法和组织病理学等方法,检测抗氧化能力(SOD、MDA)、生长因子(EGF TGF-α)、炎症因子(IL-8、TNF-α)、神经递质(5-HT、NE)、胃肠激素(GAS)等指标。结果:1.寒、热因素对胃溃疡模型的损伤可以加重溃疡的程度,且在寒热因素之间存在差异,以热因素结合溃疡模型最为严重。2.醋酸涂抹对SOD活力影响为主要因素,寒、热因素影响不明显;依模型产生机制而议醋酸涂抹型胃溃疡模型的形成与SOD活力降低有关,而寒、热证的变化尚不能体现在SOD活力方面;各因素对MDA含量的影响以热因素最为明显,热证高于寒证与单独溃疡模型。3、各因素对NO的含量影响存在差异性,表现在热因素升高,而寒因素降低,进而说明NO含量的变化可能揭示不同的“证”的表现。各因素均可使ET含量升高,但寒证较热证升高明显,且病证结合模型较单纯病或证模型其含量升高明显。4、寒、热证在IL-8、TNF-α表达方面具有差异性。血清IL-8含量、TNF-α含量的差异,特异地出现在热模型上,寒模型表达不明显,且病证模型表达量显著高于单纯证模型。5、寒、热证在5-HT、NE表达方面具有差异性。寒因素结合假手术、热因素结合假手术均可使脑组织5-HT的含量升高,且以寒因素影响明显,而单独醋酸模型5-HT变化不明显。热因素结合醋酸模型使脑组织NE的含量升高最显著,单纯热因素结合假手术次之,可见在热证溃疡模型的表达量显著高于单纯证或病模型。寒因素结合醋酸对其含量无明显影响,但单纯寒因素结合假手术可使其含量降低。6、血清GAS含量在热醋模型、热假模型及寒醋模型上变化明显,以热证模型表达量最显著,且病证结合热模型的表达量显著高于单纯病模型;寒假模型GAS表达不明显。7、EGF的表达量在寒、热因素结合醋酸涂抹,或单纯寒、热因素结合假手术皆降低,且在病证结合模型上显著低于单纯证或病模型,但寒模与热模无显著差别。TGF含量在各模型组胃组织皆降低,在病证结合模型上显著低于单纯证或病模型,但寒模与热模无显著差别。8、寒性方剂大黄黄连泻心汤防治胃溃疡热证作用机制与提高SOD活性、降低MDA含量、减少NO、ET的炎性反应、调节胃黏膜EGF、TGF-a释放、抑制炎性因子IL-8、TNF-a产生、降低交感-肾上腺髓质机能活动而减少NE含量有关。热性方剂理中丸防治胃溃疡寒证作用机制与提高SOD活性、提高NO含量、调节胃黏膜EGF、TGF-a释放、提高交感-肾上腺髓质机能活动而降低5-HT含量有关。热性方剂理中丸、寒性方剂大黄黄连泻心汤分别对胃溃疡寒、热证的影响体现在对应寒、热(证)模型中,具有方证相应的特点。结论:本研究采用寒(冰水+氢氧化钠)、热(辣椒+乙醇)因素与醋酸涂抹法结合建立的胃溃疡寒、热证模型,在抗氧化能力、生长因子、炎症因子、神经递质、胃肠激素等方面具有不同的发病机制,利用寒性方剂大黄黄连泻心汤、热性方剂理中丸对胃溃疡寒、热证进行佐证性研究,同样揭示寒、热证表现的不同,由此我们认为此次建立的胃溃疡寒、热证模型较为成功。寒热方剂对胃溃疡寒、热证的基本作用机制印证了“方证相应”的科学内涵。

【Abstract】 Object:To estabilish acetic acid daub ulcer models with cold and hotsyndrome.Reveal the essential of acetic acid daub ulcer models with cold andhot syndrome.Observe the mechanism and regulation of Dahuanhuanglianxiexindecoction and Lizhongpill on Peptic Ulcer models with cold and hotsyndrome.Method:Use cold factor(cold water,0.3mol/L NaOH) and hot factor(8%peper powder,60% ethanol mixed solution) to establish cold and hotsymdrome model conbined with acetic acid daub ulcer model.1.Observe thegeneral state,gastric mucosa,urination and fecal amount.2.Detected theulcer index,the content of TNF-a.IL-8,ET,NO and INOS.3.Detected theEGF,TGF-a,SOD and MDA in the stomach tissue.4.Detected the content of5-HT and NE in the brain tissue.Results:The cold factor and the hot factor could aggravated the damagedegree.The content of SOD of the cold syndrome and the hot syndromedecreased.Compared to the blank group and other group,the content of MDAincreased in the hot syndrome.The content of NO decreased the coldsyndrome group and increased in the hot syndrome,the content of ETincreased in the cold syndrome.The content 5-HT increased in the coldsyndrome and the hot syndrome,but the cold syndrome’s is moreobviously.the content NE increased more obviously in the hotsyndrome.Compared to the cold syndrome group,the content IL-8 and TNF-aincreased more obviously in hot syndrome.The content GAS increased in thecold syndrome and the hot syndrome,but the hot syndrome’s is moreobviously.Compared to the blank group,the content of EGF and TGF-adecreased in the cold syndrome and the hot syndrome.There was nodifference between the two groups.Conclusion:There are differences among SOD,MDA,NO,ET,5-HT,NE,GAS,EGF and TGF-a many other aspects in Peptic Ulcer models with coldand hot syndrome.The mechanism of the cold formulae Dahuanhuanglianxiexindecoction and the hot formulae Lizhongpill embodied in differentaspects.The acetic acid daub ulcer model with cold and hot syndrome wassuccessful..

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