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9种中药抗炎作用的实验观察 总被引：7，自引：1，他引：7
现代中药药理学研究表明,多种中药具有不同程度的抗炎作用。而奶牛乳腺炎临床表现症状主要是炎性反应。炎症是引起乳腺损伤和产奶量下降的直接原因。所以在治疗乳腺炎时不仅应注意杀菌还应注重促进炎症的消散。在研究中药治疗奶牛乳腺炎药理作用基础时,中药抗炎作用是一项必不可少的研究指标。奶牛乳腺炎的炎症表现主要是以血管通透性增加、白细胞游走为特点的急性非特异性炎症和以肉芽组织增生为特点的慢性非特异性炎症为主。本试验采用了急性非特异性炎症模型(小鼠耳廓肿胀法)和慢性非特异性炎症模型(小鼠棉球肉芽肿法),分别观察了金银花、连翘、蒲公英、鱼腥草、黄芩、黄柏、大黄、栝楼、牛蒡子对试验急、慢性炎症的抑制作用。以期为临床应用中药防治奶牛乳腺炎提供理论依据。1材料与方法1.1药物黄芩、蒲公英和连翘等中药采用水提醇沉法提取,使1ml中药提取液含生药量为1g,中药均购于哈尔滨市中药材批发市场,二甲苯等化学试剂均为分析纯。1.2动物昆明系清洁级小鼠,购于哈尔滨市兽医研究所小动物室。 相似文献
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秦公散水煎剂的抗炎作用初步研究 总被引：1，自引：0，他引：1
奶牛乳房炎是制约奶牛养殖业的一大顽症,主要由病原微生物感染引起,表现主要是以血管通透性增加、白细胞游走为特点的急性炎症和以肉芽组织增生为特点的慢性炎症为主[1],所以在治疗乳房炎时不仅应注意杀菌还应注重抗炎.现代中药药理学研究表明,多种中药具有不同程度的抗炎作用[2].秦公散是通过正交试验筛选出来的用于治疗奶牛乳房炎的复方中药制剂,由秦皮、蒲公英等组成.本试验采用了急、慢性非特异性炎症模型[3],分别观察了秦公散对急、慢性炎症的抑制作用,以期为秦公散的临床应用奠定理论基础. 相似文献
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为筛选和研究可有效抑制奶牛乳腺炎主要致病菌的中药复方及其抗炎效果,本文通过对黄连、黄柏、赤芍、苦参、连翘等5味中药进行正交试验设计组方,采用平板打孔法、试管二倍稀释法分别研究了各单味中药及其复方对金黄色葡萄球菌、停乳链球菌、无乳链球菌和大肠杆菌的体外抑菌效果,同时研究了筛选出的中药复方的不同剂型对二甲苯致小鼠耳肿胀的急性炎症和棉球致肉芽肿的慢性炎症的抑制效果。结果表明,4株菌对5味中药的敏感性强弱依次为无乳链球菌、停乳链球菌、金黄色葡萄球菌、大肠杆菌;中药方3和方7对4种菌的体外抑菌活性较强,且以方3的搽剂及膏剂对急、慢性炎症具有良好的抑制效果。本研究结果为研制防治临床奶牛乳腺炎的药物提供了试验依据。 相似文献
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《中兽医医药杂志》2017,(5)
研究提取方法对蒲公英、连翘和金银花复方抗炎作用的影响。采用醋酸致小鼠腹腔通透性改变、二甲苯致小鼠耳廓肿胀和棉球肉芽肿3种炎症病理模型,分别考察中药复方分煎液与合煎液对炎症模型小鼠的抗炎效果。结果表明,蒲公英、连翘和金银花复方对小鼠急、慢性炎症具有显著的抑制作用(P0.01),高剂量和中剂量的中药复方分煎液对醋酸致小鼠腹腔通透性增加的抑制率显著高于中药复方合煎液同等剂量组(P0.05或P0.01),中药复方分煎液对小鼠棉球肉芽肿的抑制率显著高于中药复方合煎液同等剂量组(P0.05或P0.01),中药复方分煎液对二甲苯致小鼠耳廓肿胀抑制率与中药复方合煎液同等剂量组差异不显著(P0.05)。提示蒲公英、连翘和金银花复方的分煎提取液抗炎效果优于合煎提取液。 相似文献
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七种中药抗鸡新城疫病毒作用的研究 总被引：4，自引：0，他引：4
金银花、板蓝根、黄芪、蒲公英、鱼腥草、连翘和黄芩7种中药是临床常用于防治畜禽疾病的药物,其对鸡新城疫病毒的抗病毒效果试验未见系统研究。试验通过鸡胚法研究了7种中药对鸡新城疫病毒的抗病毒效果,为其临床应用和药物组方奠定了理论基础。现将结果报道如下。1试验材料鸡新城疫病毒(NDV)LaSota株,由黑龙江八一农垦大学动物科技学院微生物教研室提供;金银花、板蓝根、黄芪、蒲公英、鱼腥草、连翘、黄芩,均购自哈尔滨市中药材批发市场;9日龄非免疫鸡胚,购自哈尔滨市某种鸡场。2试验方法2.1中药溶液的制备采用水提醇沉法提取中药有效成分… 相似文献
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选择蒲公英、连翘、黄连、黄芩、红花等8种具有清热解毒功效的常用中药，针对自奶牛临床型乳房炎分离的金黄色葡萄球菌、链球菌和大肠杆菌，进行体外抑菌试验。结果表明．所选择药物对分离的乳房炎致病菌具有良好的抑制作用。 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献