首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到16条相似文献，搜索用时 140 毫秒
1.
分别用小承气汤和利血平复制大鼠脾虚证模型，通过检测血清和心、肝、脾、肾等组织中抗氧化酶SOD和GSHP－Px的活性及脂质过氧化反应终产物MDA含量，研究脾虚证与自由基代谢的相关性及四君子汤对其影响。结果表明：两种方法复制脾虚证模型与对照组比较均表现为SOD活性显著升高（P＜0．05），GSH－Px活性显著降低（P＜0．05）；四君子汤反证治疗组与脾虚证组比较表现为SOD活性显著下降（P＜0．05），GSH－Px活性显著升高（P＜0．05），MDA含量显著降低（P＜0．05），与正常对照组接近。表明大鼠虚证动物模型与体内自由基代谢紊乱，脂质过氧化作用增强存在一定关系，健脾益气方药四君子汤能够提高体内抗氧化酶活性，拮抗自由基对生物膜的过氧化损伤，具有抗脂质过氧化损伤的作用。  相似文献   

2.
脾虚证模型大鼠血浆中β-EP、CGRP、NPY含量的变化   总被引：2，自引：0，他引：2  
为了阐明脾虚证模型大鼠血浆中β-endorphin，β-EP）、降钙素基因相关肽（calctonin gene related peptide，CGRP）和神经肽Y（neuropeptide Y，NPY）变化规律和健脾益气方剂四君子汤对其的调节作用以及对脾虚证病理过程的保护机制，应用利血平复制出脾虚证大鼠模型，以特异性放射免疫分析法捡测了血浆β-EP、CGRP和NPY的含量变化。结果显示．脾虚证模型大鼠血浆β-EP、CGRP比对照组显著升高（P〈0．01）．NPY比对照组显著降低（P〈0．01）．接近对照组水平。提示脾虚证的病理变化过程与β-EP、CGRP、NPY等神经肽类的失衡有一定的相关性，健脾益气方剂四君子汤对脾虚证模型大鼠血浆内β-EP、CGRP和NPY含量变化有较好的调节作用，推测这也许是四君子汤健脾益气能够治疗脾虚证的作用机制之一。  相似文献   

3.
为了阐明脾虚证模型大鼠血浆中部分神经肽的变化规律和健脾益气方剂四君子汤对神经肽的调节作用以及对脾虚证病理过程的保护机制，应用利血平和苦寒中药方剂小承气汤两种方法复制出脾虚证大鼠模型，以特异性放射免疫分析法检测了血浆β－内啡肽（β－endorphin,β-EF)、降钙素基因相关肽（Calcitonin gene related peptide,CGRP)和神经肽Y（Neuropeptide Y,NPY)的含量变化。结果表明：两种方法复制的大鼠脾虚证模型均表现为血浆β－EP、CGRP比对照组显著升高（P＜0.01)，NPY比对照组显著降低（P＜0.01)，以上变化经四君子汤治疗后都有不同程度的好转，与模型组比较差异极显著（P＜0.01)，接近对照组水平。提示脾虚证的病理变化过程与β－EP、CGRP、NPY等神经肽类的失衡有一定的相关性，而健脾益气方剂四君子汤对脾虚让模型大鼠血浆内神经肽含量有较好的调节作用，推测这也许是该方能够治疗脾虚证的作用机制之一。  相似文献   

4.
为从分子水平阐明脾虚与胃肠激素之间的关系以及健脾中药四君子汤防治脾虚的机制，首次用北京鸭复制脾虚证模型，以半定量的RT—PCR方法检测其腺胃、十二指肠和空肠血管活性肠肽（VIP）和生长抑素（SS）mR—NA表达的变化。结果表明，脾虚组腺胃VIPmRNA表达显著高于对照组（P〈0．05），十二指肠和空肠VIPmR—NA表达有所升高（P〉0．05）；脾虚组腺胃（P〈0．01）、十二指肠（P〈0．05）和空肠（P〈0．01）SSmRNA表达显著低于对照组。经四君子汤预防和治疗后二者恢复到接近对照组水平。提示脾虚证与VIP和SS有一定关系，四君子汤对VIP和SS水平的影响可能是该方治疗脾虚证的作用机制之一。  相似文献   

5.
实验性脾虚证大鼠免疫细胞因子变化及四君子汤对其影响   总被引：9，自引：1，他引：9  
本文分别通过大鼠肌肉注射利血平和口服小承气汤两种方法复制脾虚证动物模型,比较研究了脾虚证大鼠细胞因子白细胞介素-2(IL-2)、白细胞介素-6(IL-6)及肿瘤坏死因子(TNF)的含量变化,并用四君子汤治疗以反证.结果表明,不论利血平法复制脾虚证动物模型,还是小承气汤复制脾虚证动物模型,均表现为外周血IL-2、IL-6和TNF含量明显低于正常对照组与四君子汤治疗组(P＜0.01),对照组与治疗组之间除利血平所致脾虚证动物模型用四君子汤治疗后TNF含量明显高于对照组(P＜0.05)以外,以上其它指标均无明显差异(P＞0.05).说明脾虚大鼠产生IL-2、IL-6和TNF等细胞因子能力下降,使免疫功能处于低下状态,四君子汤治疗能够提高脾虚证大鼠产生细胞因子的能力,从而达到健脾益气调整机体的免疫功能.  相似文献   

6.
四君子汤对北京鸭十二指肠、空肠CCK、VIP mRNA表达的影响   总被引：2，自引：0，他引：2  
本试验探讨了四君子汤对实验性脾虚鸭十二指肠、空肠胆囊收缩素（cholecystokinin，CCK）和血管活性肠肽（vasoactive intestinal peptide，VIP）mRNA表达的调控作用。采用利血平法建立北京鸭实验性脾虚模型，用半定量RT—PCR法检测了十二指肠、空肠CCK和VIP mRNA表达的变化。结果：（1）四君子汤预防组十二指肠CCK、VIP mRNA表达极显著高于脾虚组（P〈0．01），空肠CCK、VIP mRNA显著高于脾虚组（P〈0．05），四君子汤预防组和正常对照组之间无显著差异；（2）四君子汤治疗组十二指肠CCK、VIP mRNA表达极显著高于自然恢复组（P〈0．01），空肠CCK、VIP mRNA表达显著高于自然恢复组（P〈0．05）。四君子汤对北京鸭实验性脾虚症引起的十二指肠、空肠CCK和VIP表达降低有明显的上调作用，提示四君子汤上调CCK和VIP的表达可能是其健脾助消化机理之一。  相似文献   

7.
选用产后健康乳牛18例和产后气虚血瘀证乳牛9例，于产后1、2、4、7、10、15和30d采血分离血浆，用硝酸还原酶法测定一氧化氮（NO）含量。结果，血浆NO含量在产后2、4和7d气虚血瘀证组高于产后健康组，两组呈极显著性差异（P＜0．01）；产后10d气虚血瘀证组亦高于产后健康组，两组呈显著差异 （P＜0．05）；其余时间两组差异不显著（P＞0．05）。因此乳牛产后气虚血瘀证NO自由基含量增加，可能是产后气虚血瘀证发病的病理基础之一。  相似文献   

8.
家兔脾虚动物模型免疫功能的变化   总被引：6，自引：0，他引：6  
经胃管给家兔投服苦寒中药大黄,复制家兔脾虚动物模型,用四君子汤治疗,研究其免疫功能变化。结果表明：脾虚模型组家兔的体重、外周血淋巴细胞转化率、Ｅ－玫瑰花环形成率及血浆ｃＡＭＰ和ｃＣＡＭＰ／ｃＧＭＰ较对照组显著下降（Ｐ＜０．０５或０．０１）;经四君子汤治疗后以上指标均显著升高（Ｐ＜０．０５或０．０１）。说明脾虚时机体免疫功能降低,四君子汤治疗对脾虚时的免疫功能有促进作用。  相似文献   

9.
为了研究脾虚证时组织化学的变化及四君子汤对其的影响,选用Wistar大鼠,以利血平复制脾虚证动物模型,实验设正常对照组、脾虚组、脾虚治疗组,每组15只,于第7d、第14d分别扑杀各组动物,取肝脏、十二指肠、胃和肌肉组织,分别应用PAS法和Lojda法染色,组织学半定量法观察糖原和琥珀酸脱氢酶的变化。实验结果表明:第7d时,脾虚组和脾虚治疗组肝脏和肌肉组织中的糖原含量显著低于对照组(P<0.01),各组织中琥珀酸脱氢酶含量则显著高于对照组(P<0.01);第14d时,脾虚组糖原含量反而显著高于对照组和脾虚治疗组(P<0.05～0.01),琥珀酸脱氢酶含量仍明显高于对照组和脾虚治疗组(P<0.050.01)。说明脾虚证的病理变化过程与机体糖原和琥珀酸脱氢酶等的组织化学变化有一定的联系,健脾益气方剂四君子汤对脾虚证模型大鼠的组织学变化有较好的调节作用。  相似文献   

10.
试验基于大鼠脾虚证模型,经与传统固本方剂-四君子汤比较,初步揭示银杏叶复方干预大鼠脾虚证营养物质代谢方面的影响。选择24只雄性SD大鼠,随机分为对照组、脾虚模型组、四君子汤组和银杏叶复方组,每组6只。对照组给予生理盐水灌服(10 mL/kg)和皮下注射(0.6 mL/kg),脾虚模型组给予生理盐水灌胃(10 mL/kg)和皮下注射利血平(0.6 mL/kg),四君子汤组和银杏叶复方组分别灌服相应制剂(10 mL/kg)和皮下注射利血平(0.6 mL/kg),连续12 d。结果表明:PCA得分图显示,对照组和脾虚模型组的血浆样本散点完全分开,银杏叶复方组血浆样本散点较四君子汤组向对照组更紧凑聚集;经过筛选,银杏叶复方干预大鼠脾虚证的血浆相关差异代谢物主要为多巴胺、L-脯氨酸等29种物质[变量投影重要度(VIP)>1,P<0.05],与脾虚模型组相比,在银杏叶复方组中相关差异代谢物含量下调主要有胞嘧啶、多巴胺等,上调的主要有甜菜碱、棕榈酰溶血卵磷脂等;银杏叶复方干预大鼠脾虚证的代谢通路主要为酪氨酸代谢、精氨酸和脯氨酸代谢、缬氨酸和亮氨酸及异亮氨酸生物合成、花生四烯酸代谢[拓扑分析影响因子(Impact)>0.1]。综上所述,银杏叶复方主要通过氨基酸代谢和脂质代谢有效干预大鼠脾虚证病理状态。  相似文献   

11.
将45只大白鼠随机分成对照组、脾虚模型组及治疗组,每组15只。以利血平(1mg/kg·d)复制大白鼠脾虚证模型,四君子汤辅助治疗,在实验进行至第7天和第14天分别捕杀各组大白鼠,取肝脏、肌肉组织,用组织化学方法测定在不同组间和不同实验阶段其中糖原的变化。结果,在第7天时,脾虚组和治疗组糖原含量明显低于正常对照组,第14天时,与正常对照组相比较,脾虚组和治疗组糖原含量显著升高,且脾虚组糖原含量较其它两组高,提示肝脏和肌肉组织中糖原的变化可能是脾虚证发生发展的重要指标。  相似文献   

12.
为研究加味四君子汤的药效学,试验通过灌服大黄水煎液制备小鼠脾虚症模型,观察不同剂量加味四君子汤对脾虚小鼠一般体征、免疫机能、抗应激能力、胃肠运动和吸收功能的影响.结果表明,加味四君子汤中,高剂量组可改善脾虚小鼠的体征,显著增加小鼠体重和腹腔巨噬细胞吞噬率(P <0.05),在一定程度上提高小鼠体温;中剂量组可显著提高血清中IgM含量、脾脏指数和胸腺指数(P <0.05);不同剂量加味四君子汤均能显著提高腹腔巨噬细胞吞噬指数和延长小鼠游泳持续时间(P <0.05),改善常压耐缺氧能力,降低胃排空率,减缓小肠的推进,提高脾虚小鼠尿液D-木糖排泄量和血清淀粉酶活性.综上所述,不同剂量的加味四君子汤能改善小鼠脾虚症状,提高小鼠的免疫机能、抗应激和消化吸收能力.  相似文献   

13.
The distribution and relative frequency of endocrine cells in the gastrointestinal tract of the babirusa were studied immunohistochemically using the avidin-biotin-peroxidase complex method. Thirteen types of gut endocrine cells were detected; they were immunoreactive for chromogranin, serotonin, somatostatin, gastrin, bovine pancreatic polypeptide (BPP), glucagon, secretin, cholecystokinin (CCK), methionine-enkephalin-Arg6-Gly7-Leu8 (MENK8), motilin, gastric inhibitory polypeptide (GIP) and peptide tyrosine tyrosine (PYY). Cells that were immunoreactive for chromogranin, serotonin, somatostatin and glucagon were found in all portions of the gastrointestinal tract. MENK8-immunoreactive cells were observed in the stomach and small intestine. Gastrin-immunoreactive cells were detected in the pyloric region and duodenum. PYY-immunoreactive cells were found in the small and large intestine. Cells immunoreactive for motilin, CCK, GIP, and secretin were observed in the proximal small intestine and those immunoreactive for neurotensin were found only in the ileum. Although the distribution pattern of endocrine cells in the gastrointestinal tract of babirusa was similar to those reported for pig, restricted distribution of several endocrine cells, gastrin, BPP, MENK8, motilin, CCK, GIP, secretin and neurotensin and wider distribution of glucagon and PYY were observed in the babirusa. The unexpected presence of MENK8 in all glandular regions of the stomach and PYY in the small intestine was also noted. The distribution of gut endocrine cells might be related to the regulatory characteristics of the babirusa digestive tract.  相似文献   

14.
Blood gastrin and pepsinogen responses to a single infection with 100,000 Ostertagia ostertagi infective larvae in lactating dairy cows were investigated. None of the infected cows showed signs of clinical ostertagiasis, nor was there any difference in live weight gain, milk yield or faecal egg count between groups. Pepsinogen levels of the infected group were significantly elevated between days 3 and 24 after infection (peak 1041 mU tyrosine; day 14). In contrast, there was no significant difference in blood gastrin levels between infected and control animals suggesting that few adult worms had become established in the former group. These data are compared with the increases in both gastrin and pepsinogen levels recorded in susceptible calves exposed to the same level, pattern and strain of ostertagia infection in a previous experiment. It is suggested that gastrin assay may be of value in adult cattle for indicating when elevated pepsinogen levels are merely associated with a rise in larval intake and not with the establishment of large adult worm burdens.  相似文献   

15.
The predominant form of gastrin in the antral mucosa of the stomach of virtually all species previously examined is the 17 amino acid peptide little gastrin (G17). This report describes the occurrence in equine antral mucosa of an immunoreactive form of gastrin with elution properties on Sephadex G-50 superfine similar to human unsulfated big gastrin (G34-I). This putative equine big gastrin was a major component of the gastrin immunoreactivity present. A second peak of activity in equine antral mucosa eluted in an identical manner to human little gastrin (hG17-I). Inhibition curves of equine big and little gastrin, with the gastrin radioimmunoassay utilized in this study, were parallel. This observation indicates that there was no spurious increase in the apparent relative amount of big gastrin due to significant differences in the RIA antibody cross-reactivity to big and little equine gastrin. The equine big gastrin peak was resolved by ion exchange chromatography into unsulfated and sulfated forms in approximately equal amounts. This data implies that posttranslational processing of gastrin in horses may differ from that of species previously studied.  相似文献   

16.
Central regulation of food intake in the neonatal chick   总被引：3，自引：0，他引：3  
Regulating food intake is complicated in animals including domestic birds. Just after hatching, neonatal chicks find their food by themselves and they can control food intake, since domestic chicken belongs to the precocial type of avian species. Thus, domestic chickens have relatively well-developed mechanisms of food-intake control at hatching. While many aspects of food-intake regulation in chickens appear similar to that in mammals, there are some responses that are unique to chickens. For instance, some neurotransmitters such as neuropeptide Y (NPY), orexin-A, orexin-B, motilin, melanin-concentrating hormone (MCH), galanin, growth hormone releasing factor (GRF) and ghrelin stimulate feeding in mammals. Only NPY strongly stimulates food intake in birds similar to that observed in mammals; however, both orexins, motilin, MCH and galanin failed to alter food intake of the chick. Moreover, GRF and ghrelin suppressed feeding of chicks. On the other hand, cholecystokinin (CCK), gastrin, glucagon-like peptide-1 (GLP-1), corticotropin-releasing factor (CRF), histamine, α-melanocyte stimulating hormone (α-MSH), leptin and bombesin are known to suppress feeding in mammals. These responses are similar to those of mammals except for leptin. Therefore, the inhibitory mechanisms for feeding are well conserved in chicks.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号