共查询到20条相似文献，搜索用时 203 毫秒
1.
为了探究温度变化和中药对马离体小肠运动的影响,用生物信号处理系统监测了浴槽不同温度、中药单方(陈皮和枳实)和中药复方制剂对马离体小肠运动的影响。结果显示,浴槽温度从38℃降温到32℃过程中,小肠收缩频率和幅度减弱,张力增加(P0.05);当浴槽温度从32℃升温到38℃过程中,小肠收缩逐渐恢复;当浴槽温度从38℃升温到41℃过程中,小肠收缩幅度增加,收缩频率减慢(P0.05),再降温到38℃小肠收缩可恢复。复方浓度递增到128μL/mL时小肠收缩幅度和收缩张力同用药前指标比较,差异显著(P0.05)。陈皮单方浓度递增到32μL/mL时和64μL/mL时,小肠收缩张力同用药前张力比较差异分别显著(P0.05)和极显著(P0.01);浓度递增到64μL/mL时,小肠收缩幅度同用药前幅度比较,差异显著(P0.05)。枳实单方浓度递增到32μL/mL时,小肠收缩频率和张力同用药前指标比较差异分别显著(P0.05)和极显著(P0.01)。研究表明,温度降低可使马小肠平滑肌收缩加强,单味陈皮和枳实以及复方中药对马离体小肠均有抑制作用,提示这些中药方剂均有望用于临床缓解马匹肠痉挛。 相似文献
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《当代畜牧》2016,(27)
为了观察不同浓度槐花水煎液对家兔离体小肠运动性能的影响,笔者采用离体器官实验法,将兔离体肠管放置于恒温(38.0±0.5℃)平滑肌槽中,依次加入0.2 g/L、0.4 g/L、0.6 g/L、0.8 g/L浓度的槐花水煎液,记录给药前后十二指肠、空肠平滑肌运动性能的变化。结果表明,与用药前比较,水煎液浓度为0.2 g/L时,离体十二指肠的收缩张力明显下降(P0.01),收缩振幅、收缩频率无显著变化(P0.05);离体空肠的收缩张力、收缩振幅明显下降(P0.01),收缩频率不显著(P0.05)。随着浓度增加到0.4 g/L、0.6 g/L、0.8 g/L时,离体十二指肠和空肠的收缩张力、收缩振幅、收缩频率极显著下降(P0.01)。说明槐花水煎液能显著降低离体十二指肠和空肠的收缩张力、收缩振幅和收缩频率,且呈现量效关系。 相似文献
3.
为了观察不同浓度的马钱子水煎液对家兔离体小肠运动性能的影响,笔者采用离体器官试验法,将家兔离体肠管置于恒温(38±0.5℃)平滑肌槽中,向平滑肌槽中加入浓度为5 g/L、10 g/L、15 g/L、20 g/L和25 g/L马钱子水煎液,记录给药前后十二指肠、空肠平滑肌运动性能的变化。结果表明,与用药前比较,5 g/L、10 g/L浓度时能促进十二指肠运动性能,15 g/L、20 g/L和25 g/L浓度时抑制十二指肠运动性能;在10 g/L浓度的时促进空肠运动性能;25 g/L时抑制空肠运动性能。说明马钱子水煎液对离体十二指肠和空肠收缩张力,收缩振幅和收缩频率的作用表现为低浓度兴奋、高浓度抑制。 相似文献
4.
不同处理黄芩对家兔离体小肠张力的影响 总被引：1，自引：0，他引：1
为了探讨不同处理的黄芩对家兔离体小肠运动的作用规律,采用离体器官测定法,将配制好的不同处理黄芩分别作用于离体十二指肠和空肠,观察其张力的变化.结果表明,黄芩水煎剂对十二指肠和空肠的作用是每毫升含生药0.02,0.04,0.08g有兴奋平滑肌作用.其中,以每毫升含生药0.08,0.04g分别对十二指肠张力、运动幅度兴奋作用最强;以每毫升含生药0.08 g对空肠兴奋作用最强.黄芩水煎醇沉液对十二指肠和空肠的作用是每毫升含生药0.02,0.04,0.08 g具有兴奋平滑肌的作用,以每毫升含生药0.08 g兴奋作用最强.不同处理黄芩每毫升含生药0.16 g对十二指肠和空肠都有极显著(P<0.01)的抑制作用.结论:低剂量黄芩有兴奋平滑肌的作用,高剂量有极显著(P<0.01)的抑制作用.乙酰胆碱对家兔离体小肠有短时间的兴奋作用.频率变化随小肠平滑肌兴奋而加快,随抑制而减慢. 相似文献
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《中国兽医杂志》2015,(11)
为了观察大黄浸泡液对家兔离体十二指肠平滑肌运动的影响,采用离体器官实验法,向恒温平滑肌槽中逐次加入不同浓度、不同浸泡时间的大黄浸泡液,记录平滑肌肌张力、收缩振幅和收缩频率的变化。结果不同浸泡时间的大黄药液均是在浓度较低时,对家兔平滑肌肌张力和收缩振幅的促进作用更明显,而随着大黄浓度的增加,肌张力和收缩振幅反而下降。各试验组均以12 h、0.0625 g/mL大黄浸泡液的张力促进率(45.88%)和收缩振幅促进率(42.04%)为最大。表明大黄浸出液对家兔离体十二指肠平滑肌的运动有明显增强作用,且不同浓度、不同浸泡时间的作用效果差异极显著(P0.01)。 相似文献
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采用离体器官实验法 ,将不同状态下的家兔离体子宫置于恒温通气麦氏浴皿培养液中 ,向麦氏浴皿中逐次加入等量不同浓度的益母草水煎剂。通过 BL - New Century生物信号采集处理系统 ,扫描记录子宫平滑肌张力变化情况 ,观察益母草水煎剂对家兔离体子宫运动性能的影响 ,并探讨其作用机理。结果 :益母草水煎剂在浓度为 0 .2 5～ 1.0 0 g/ ml时 ,子宫平滑肌张力随浓度增大而增大 ;益母草水煎剂对怀孕家兔离体子宫的平滑肌收缩作用比空怀家兔离体子宫的平滑肌收缩作用显著 (P<0 .0 1) ,对怀孕家兔经己烯雌酚处理的离体子宫的平滑肌收缩作用比未经己烯雌酚处理的离体子宫平滑肌收缩作用显著 (P<0 .0 1) ;而对空怀家兔是否经己烯雌酚处理时的子宫平滑肌收缩作用差异不显著 (P<0 .0 5 )。结论 :益母草水煎剂对不同状态下的家兔离体子宫平滑肌收缩均有增强作用。 相似文献
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研究菊花水提物在有乙酰胆碱、组胺和阿托品的条件下对家兔离体小肠平滑肌收缩性的影响。以家兔离体小肠平滑肌条为模型,考察在正常克氏液条件下分别加入乙酰胆碱、组胺和阿托品后家兔平滑肌条的收缩状况及在该条件下分别加入0.5g/mL菊花水提液物后家兔小肠平滑肌条的收缩状况。结果:菊花水提物对家兔离体小肠平滑肌的收缩具有一定的促进作用,菊花水提物能协同促进乙酰胆碱对家兔离体小肠平滑肌的收缩作用,拮抗阿托品的作用,对组胺的小肠收缩振幅影响不显著。菊花水提物对家兔小肠平滑肌收缩活动具有明显的兴奋作用,这种兴奋作用可由M受体介导。 相似文献
9.
为探讨白术和白头翁水煎液对鸡离体空肠运动张力的影响,采用离体器官试验法,以鸡的空肠平滑肌张力变化为指标,将鸡的离体空肠置于恒温通气台式液中,分别加入浓度为4.00g/L、8.00g/L和16.00g/L的白术和白头翁的水煎液,以观察白术和白头翁对不同肠管运动张力的影响。试验结果表明,白术水煎液能促进鸡离体空肠平滑肌收缩运动,使收缩张力和舒张张力增强,收缩振幅增大,其剂量越大作用越强,并呈量效关系。白头翁水煎液极显著抑制鸡离体空肠平滑肌的自律性收缩活动,可降低空肠运动张力,减小收缩幅度,加大剂量其抑制效果亦随之加强。 相似文献
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11.
KALIBIXATI&# Aimulajiang ZHOU Yu-dong YAN Shu-ping HALIDAN&# Ahemaiti ZHAO Hong-qiong 《中国畜牧兽医》2016,43(8):2060-2065
In order to explore the influence of temperature changes on animal digestive tract smooth muscle,the contractility of isolated rabbit small intestine (duodenum,jejunum and ileum) were measured at different temperatures (39→32℃,32→39℃,39→42℃ and 42→39℃) using the biological signal processing system.The results showed that the contraction frequency of duodenum and jejunum was positively correlated with temperature changes between 39 and 32℃,while the amplitude and tension of duodenum were negatively correlated with temperature changes.Only the contraction frequency of ileum was positively correlated with temperature changes between 39 and 32℃.Changes of frequency,amplitude and tension of duodenum between 39 and 42℃ were similar with those changes between 39 and 32℃.However,the contraction of jejunum and ileum was irregular.When the temperature was decreased from 42 to 39℃,the contraction of small intestine could not return to the condition in 39℃.The results suggested that the optimal bath temperature was 37℃ in contraction test of rabbit small intestine in vitro,and the present results could be referenced to explore the disorder of gastrointestinal movement due to the change of environment temperature in animals. 相似文献
12.
LIU Xiao-long FAN Huan CHEN long-bin LI Hai-hua QIAO Jia-yun WANG Wen-jie 《中国畜牧兽医》2017,44(11):3187-3194
In order to investigate the effects of cecropin and synbiotics on the intestinal mucosal morphology and intestinal mucosal immune cells of AA broilers. 480 of 1-day-old healthy AA broilers were chosen and randomly divided into 4 groups with 4 replicates per group and 30 broilers per replicate. The broilers in group Ⅰ(control group) were fed basal diet,while that in groups Ⅱ to Ⅳ were fed the basal diet supplemented with 0.5% cecropin,0.3% synbiotics,0.5% cecropin+0.3% synbiotics,respectively. The trial lasted for 42 days. The result showed that compared with group Ⅰ,the villus height of duodenum and ileum in group Ⅳ were extremely significantly increased (P<0.01).The crypt depth of jejunum and ileum in group Ⅱ,and that of small intestine in group Ⅲ were significantly or extremely significantly decreased (P<0.05;P<0.01).The villus height/crypt depth of small intestine in groups Ⅱ and Ⅲ,and that of duodenum and ileum in group Ⅳ were significantly or extremely significantly increased (P<0.05;P<0.01).The villus width of jejunum in group Ⅱ was significantly decreased (P<0.05),while the villus width of duodenum and jejunum in group Ⅲ,that of jejunum and ileum in group Ⅳ were extremely significantly decreased (P<0.01).The mucous thickness of jejunum in groups Ⅱ and Ⅲ were significantly increased (P<0.05),while that of small intestine in group Ⅳ was extremely significantly increased (P<0.01).The number of the intraepithelial lymphocyte of ileum in group Ⅱ was significantly increased (P<0.05),and that of duodenum in group Ⅲ and small intestine in group Ⅳ were extremely significantly increased (P<0.01).The number of the goblet cell of duodenum in group Ⅲ,duodenum and ileum in group Ⅳ were extremely significantly increased (P<0.01).The mast cell of jejunum in group Ⅳ was significantly increased (P<0.05).In conclusion,both the cecropin and synbiotics could improve the small intestine mucosal structure and promote the small intestine mucosal immunocompetent cells proliferation in AA broiler, and the effect of combined utilization would be better. 相似文献
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为研究日粮中添加天蚕素、合生素对AA肉鸡小肠黏膜形态及免疫细胞的影响,试验选用480只1日龄健康AA肉鸡,随机分为4组,每组4个重复,每个重复30只鸡。对照组（Ⅰ组）饲喂基础日粮,试验组（Ⅱ~Ⅳ组）分别在基础日粮中添加0.5%天蚕素、0.3%合生素、0.5%天蚕素+0.3%合生素。试验期42 d。结果显示,与Ⅰ组相比,Ⅳ组十二指肠、回肠绒毛高度极显著升高（P<0.01）;Ⅱ组空肠和回肠、Ⅲ组小肠各段隐窝深度显著或极显著降低（P<0.05;P<0.01）;Ⅱ、Ⅲ组小肠各段和Ⅳ组十二指肠、回肠绒毛高度/隐窝深度显著或极显著升高（P<0.05;P<0.01）;Ⅱ组空肠绒毛宽度显著降低（P<0.05）,Ⅲ组十二指肠和空肠、Ⅳ组空肠和回肠绒毛宽度均极显著降低（P<0.01）;Ⅱ、Ⅲ组空肠黏膜厚度显著升高（P<0.05）,Ⅳ组小肠各段黏膜厚度均极显著升高（P<0.01）。Ⅱ组回肠上皮内淋巴细胞数量显著升高（P<0.05）,Ⅲ组十二指肠、Ⅳ组小肠各段上皮内淋巴细胞数量极显著升高（P<0.01）;Ⅲ组十二指肠、Ⅳ组十二指肠和回肠杯状细胞数量极显著升高（P<0.01）;Ⅳ组空肠肥大细胞数量显著升高（P<0.05）。综上所述,天蚕素、合生素单独或联合添加均能改善AA肉鸡小肠黏膜结构,促进小肠黏膜免疫细胞增殖,联合添加效果最佳。 相似文献
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Sarriá R Latorre R Henroteaux M Henroteaux N Soria F Pérez-Cuadrado E López Albors O 《Veterinary journal (London, England : 1997)》2012,192(3):498-502
The histology of the canine intestine has not been accurately defined. To establish the precise thickness of its different layers, whole wall samples of the small intestine were removed from 41 cadavers at five standardised sampling sites (duodenum, proximal jejunum, distal jejunum, proximal ileum and distal ileum). The total thickness was estimated by morphometry, as was the thickness of the mucosa, muscularis mucosae, submucosa and muscularis externa. In addition, the size of the lymphoid aggregates in the submucosa and the thickness of the circular and longitudinal layers within both the muscularis mucosae and the muscularis externa were estimated. The total intestinal thickness depended very much upon the thickness of the mucosa and submucosa. The mucosa decreased progressively from proximal to distal parts of the small intestine (47% reduction). The thickness of the submucosa, however, changed little from the duodenum to the distal jejunum, but increased significantly in the ileum; this change was positively correlated with the amount of lymphoid tissue. Sex influenced the thickness of the intestinal wall, with males displaying higher thickness values along the small intestine. Conversely, no correlation between bodyweight and intestinal thickness was found for any of the five sampling sites. This study gives absolute and relative values for the thickness of the layers of the dog intestine which might help in the diagnosis of small intestinal pathology from postmortem samples and/or endoscopic biopsies. 相似文献
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羔羊小肠pH及主要消化酶发育规律的研究 总被引：13，自引：2，他引：13
对小尾寒羊羔羊小肠不同部位(十二指肠、空肠和回肠)pH及淀粉酶、胰蛋白酶、糜蛋白酶、脂肪酶和乳糖酶的活性进行了测定，结果表明：羔羊小肠不同部位内容物pH不同，回肠pH显著高于空肠，空肠和回肠pH显著高于十二指肠，羔羊1月龄后，小肠各段pH变化不大；小肠不同部位淀粉酶和胰蛋白酶、糜蛋白酶及脂肪酶活性不同，空肠段淀粉酶、胰蛋白酶、糜蛋白酶及脂肪酶活性高于十二指肠和回肠段，随着羔羊日龄的增长，小肠淀粉酶、胰蛋白酶、糜蛋白酶及脂肪酶活性增加，3月龄后各消化酶活性变化差异不显著(P＜O．05)；羔羊小肠不同部位乳糖酶活性不同，空肠乳糖酶活性显著高于十二指肠和回肠，随着羔羊日龄的增长，小肠乳糖酶活性逐渐降低。 相似文献
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运用组织学和组织化学染色法,分别对自然感染贝氏莫尼茨绦虫的成年绵羊（感染组）与正常成年绵羊（对照组）的小肠各肠段的上皮内淋巴细胞、浆细胞、杯状细胞和嗜酸粒细胞的分布和数量变化进行了比较研究。结果显示：感染组小肠各段上皮内淋巴细胞、浆细胞、杯状细胞和嗜酸粒细胞数量均显著高于对照组,其中感染组十二指肠、空肠和回肠的上皮内淋巴细胞数量分别比对照组增加了169.11%、230.38%和233.42%（P〈0.01）;嗜酸粒细胞数量分别比对照组增加了116.78%、123.87%和164.51%（P〈0.01）;浆细胞数量分别比对照组增加了127.34%、72.97%和328.26%（P〈0.01）;杯状细胞数量分别比对照组增加了33.40%、41.42%和133.17%。对照组和感染组上皮内淋巴细胞和杯状细胞从十二指肠到回肠均逐渐减少,相反,对照组和感染组嗜酸粒细胞数量从十二指肠到回肠均逐渐增多,对照组小肠固有层浆细胞数量从十二指肠到空肠增加,空肠到回肠减少,感染组小肠固有层浆细胞数量从十二指肠到回肠均逐渐增多;对照组十二指肠、空肠、回肠的上皮内淋巴细胞、上皮内杯状细胞、浆细胞和嗜酸粒细胞均差异极显著（P〈0.01）;感染组十二指肠、空肠、回肠的上皮内杯状细胞、浆细胞和嗜酸粒细胞均差异极显著（P〈0.01）,感染组上皮内淋巴细胞空肠与回肠差异极显著（P〈0.01）,但十二指肠与空肠差异不显著（P〉0.05）。研究结果表明,贝氏莫尼茨绦虫感染成年绵羊后,成年绵羊通过特异性黏膜免疫细胞上皮内淋巴细胞增生加强细胞免疫水平,浆细胞增生加强体液免疫水平,同时还通过非特异性黏膜免疫细胞,嗜酸粒细胞和杯状细胞的增生进一步加强黏膜免疫水平以抵抗贝氏莫尼茨绦虫对绵羊的感染。可见绵羊可以通过黏膜免疫相关细胞增生加强局部免疫力以监视虫体免疫逃逸来抵抗寄生虫的感染。 相似文献
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J Kawano T Yamamoto M Koga A Shimizu S Kimura 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》1992,54(1):69-73
Ligated intestines of rabbits, mice, rats and chickens were used to examine the penetration of newly excysted juvenile flukes of Japanese Fasciola sp. in vitro. In rabbit intestines, the penetration rate was relatively high in the rectum and duodenum. Penetration rates in the jejunum, ileum, cecum and colon were comparable to those in the rectum and duodenum, although it was lower in the appendix. In the case of mouse, juvenile flukes penetrated the duodenum, jejunum, cecum, and rectum at considerably high rates. In rat intestine, penetration by flukes was less in the duodenum and rectum, although flukes were detected in the jejunum. In chicken intestine, flukes barely penetrated the duodenum, jejunum and rectum. Consequently, newly excysted flukes of Fasciola sp. seem to penetrate any region of the intestine in rabbits and mice. In rats, the middle small intestine may be the site suitable for flukes to penetrate. In chickens, the difficulty in penetration of the intestinal wall may be one of the reasons why chickens are scarcely infected with Fasciola sp. 相似文献
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应用组织切片技术对11～53日龄吉林白鹅小肠绒毛高度、绒毛宽度、隐窝深度和肌层厚度进行测定。结果显示,小肠各段绒毛高度及宽度随日龄增加整体上呈增长趋势,空肠绒毛最长,回肠绒毛高度、宽度在39日龄达到峰值,早于空肠和十二指肠。回肠隐窝深度11～53日龄随日龄增加而增加,十二指肠和空肠隐窝深度在39日龄达到峰值,39～53日龄变浅。小肠各段肌层厚度与日龄呈正相关,回肠的肌层厚度在46日龄达到高峰,十二指肠和空肠的肌层厚度在53日龄达到高峰。小肠各段绒毛高度/隐窝深度的比值随日龄增加而增加,53日龄时空肠的绒毛高度/隐窝深度的比值最高。 相似文献
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将微生态制剂肽菌素添加到肉鸡的日粮中,通过测定肉鸡的生长性能、消化道生理和肠道菌群等指标,探讨肽菌素在肉鸡生产上的应用效果。结果表明:①金霉素和肽菌素均能显著提高肉鸡21日龄体重,1～21日龄平均日增重以及料肉比(P<0.05)。从料肉比来看,添加肽菌素和金霉素均有降低1～21日龄肉鸡料肉比的趋势,且肽菌素各组料肉比均低于金霉素组,但差异均不显著(P>0.05)。②肽菌素能显著降低21日龄肉鸡十二指肠、空肠和整个小肠的相对长度,显著增加回肠相对长度(P<0.05)。金霉素对十二指肠、空肠和整个小肠的长度无显著影响(P>0.05),但显著增加回肠相对长度(P<0.05)。42日龄时,肽菌素仅显著增加空肠的相对长度,对其他肠段无显著影响(P>0.05)。而金霉素则对42日龄肉鸡的十二指肠、空肠、回肠和整个小肠的长度无显著影响(P>0.05)。③肽菌素和金霉素对21日龄及42日龄肉鸡的十二指肠、空肠、回肠的绒毛高度、隐窝深度以及绒隐比值均无显著影响(P>0.05),但有提高的趋势。④肽菌素有提高21日龄肉鸡盲肠内容物中乳酸杆菌数量和降低大肠杆菌数量的趋势,各组间差异不显著;金霉素显著降低了乳酸杆菌和大肠杆菌的数量(P<0.05)。综上所述,肽菌素能提高肉鸡的生产性能、改善肠道形态、增加肠道中乳酸杆菌的数量和降低大肠杆菌的数量,且前期效果大于后期。 相似文献