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许小琴 《兽药与饲料添加剂》1997,(4)
消肿解毒饮口服液是扬州大学农学院中兽医教研室研制的一种中成药液,具有清热解毒祛湿健脾、利水消肿的功效。大量的临床治疗试验表明,该药对仔猪水肿病具有很高的疗效,值得进一步研究开发。本文主要报道消肿解毒饮的体外抑菌及利尿试验结果。 相似文献
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本文测定了水溶性氟哌酸的抗菌性能及抑菌浓度。其体外最小抑菌浓度(MIC):禽巴氏杆菌2.5μg/ml,猪丹毒杆菌是2.0μg/ml(相当于1.5μg/ml 氟哌酸);猪链球菌、禽大肠杆菌、金黄色葡萄球菌、禽沙门氏菌是1μg/ml(相当于0.615μg/ml 氟哌酸)。接种细菌量和牛血清成分对本品抑菌浓度几乎无影响。 相似文献
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为筛选抗猪繁殖与呼吸障碍综合征病毒的中药,制备柴胡解毒注射液,并以其为试验药物,同时以利巴韦林注射液作为对照药物。观察在细胞上对猪繁殖与呼吸障碍综合征病毒的作用效果。结果表明,自最大安全浓度做倍比稀释后.对猪繁殖与呼吸障碍综合征病毒均具有一定的抑制、杀灭和阻断作用。其中,柴胡解毒注射液抑制和杀灭作用均较为突出.利巴韦林注射液杀灭和抑制作用均较为显著。 相似文献
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6株乳酸菌体外抑菌实验 总被引:11,自引:0,他引:11
实验室或临床实践研究表明 ,乳酸菌对肠道细菌如大肠杆菌、沙门氏菌等引起的肠道感染、腹泻等疾病有保护预防性作用 [1,2 ,3 ,4 ] 。乳酸菌代谢后产物对致病菌的拮抗作用及竞争排斥作用被认为是产生上述功能的主要因素。乳酸菌拮抗作用产生的原因是多方面的 :( 1 )乳酸菌产生过氧化氢 ,对病原菌有抑菌作用[5] 。( 2 )乳酸菌产酸 ,如乙酸、丙酸、乳酸等 ,酸对有害菌起生长抑制作用 [6,7]。 ( 3)乳酸菌产抗生素或细菌素类物质 ,对有害菌有杀菌作用 [7,8,9] 。 ( 4 )乳酸菌与小肠粘膜上皮细胞结合 ,占据有害菌小肠粘膜上皮细胞结合位点 ,对有害… 相似文献
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将120只1日龄健康罗曼褐公雏鸡随机分为3组,即对照组、剂量组Ⅰ和剂量组Ⅱ,每组40只.从3日龄开始,分别给剂量组Ⅰ灌喂0.5mL、剂量组Ⅱ灌喂1.0mL参芪口服液,每日1次,连续灌喂3d,对照组不作任何处理.在不同日龄测定血清中超氧化物歧化酶(SOD)的活性.结果表明,鸡灌服参芪口服液后,剂量组Ⅰ和剂量组Ⅱ分别在7日龄、14日龄时血清SOD活性极显著高于对照组(P<0.01),并且剂量组Ⅱ在14日龄后血清SOD活性仍保持较高水平.说明参芪口服液可以提高鸡血清中SOD的活性,增强机体的抗氧化能力;适当剂量可使鸡血清中SOD的活性长时间保持较高水平. 相似文献
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OBJECTIVES: To determine in vitro susceptibility of Porphyromonas gingivalis, P salivosa and P circumdentaria to seven antimicrobial agents by agar dilution and Epsilometer test methods and to assess the effectiveness of these antimicrobial agents in reducing the numbers of each Porphyromonas spp in the oral cavity of 16 domestic cats. DESIGN: A two-part prospective study involving in vitro antimicro-bial studies using Porphyromonas spp obtained from naturally occurring feline infections and in vivo antimicrobial response studies using client-owned cats with naturally occurring periodontal disease. PROCEDURE: Isolates (n = 25) of three feline Porphyromonas spp from the oral cavity and oral-associated disease were tested for their in vitro susceptibility to amoxycillin, amoxycillin-clavulanate, benzylpenicillin, clindamycin, doxycycline, erythromycin and metronidazole, using agar dilution and Epsilometer test methods. Digoxigenin-labelled whole chromosomal DNA probes directed against P gingivalis VPB 3492, P circumdentaria NCTC 12469T and P salivosa VPB 3313 were used to quantify organisms taken from two sample sites at the gingival margins of these cats prior to, and 5 days after, treatment with one of four commonly used antimicrobial products (amoxycillin-clavulanate, clindamycin, doxycycline or spiramycin-metronidazole). The response to treatment was assessed clinically for each cat. RESULTS: All isolates were susceptible in vitro to all seven antimicrobial agents using both methods. The numbers of P gingivalis were not reduced at the gingival sample sites by administration of amoxycillin-clavulanate for 5 days, although this treatment reduced the numbers of P salivosa and P circumdentaria to below detection levels in six of eight and two of three of sample sites, respectively; clinical improvement was not observed in cats treated with amoxycillin-clavulanate. Treatment with clindamycin, doxycycline or spiramycin-metronidazole resulted in clinical improvement and a marked reduction of all Porphyromonas isolates at the sample sites. CONCLUSION: The Epsilometer test is a simple and accurate method for determining the minimum inhibitory concentration for P gingivalis, P salivosa and P circumdentaria. All strains were susceptible in vitro to all the antimicrobial agents tested although clinical improvement of gingival disease was not noted with amoxycillin-clavulanate when given for 5 days at usual doses. This appears to be the first report of the disparity between the in vivo and in vitro susceptibility of oral bacterial strains to amoxycillin-clavulanate in the veterinary dental literature. This also appears to be the first report in which clinical and microbiological responses to commonly used antimicrobial agents for periodontal disease in cats has been documented and quantified. It was shown that treatment with clindamycin, spiramycin-metronidazole or doxycycline not only produced a substantial reduction in the number of Porphyromonas spp (in the majority of cases to below detection levels), but also resulted in substantial clinical improvement. This would indicate that these antimicrobial agents are useful adjunctive therapy to mechanical debridement in domestic cats. 相似文献
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试验旨在研究黄连解毒汤有效成分的提取及对其体内白色念珠菌的清除作用。分别采用水煎煮和乙醇回流提取法,随后乙醇提取物用3种不同极性的有机溶剂萃取(正丁醇、乙酸乙酯、石油醚),以最小抑菌浓度为指标优化出最佳抑菌效果的提取工艺;观察给药前后系统性感染白色念珠菌小鼠肾脏、肝脏的真菌负荷量及活性氧(ROS)含量水平的变化,并检测血清中细胞因子白细胞介素-6(IL-6)、IL-1β、白细胞介素-1β前体(pro-IL-1β)及肿瘤坏死因子-α(TNF-α)的含量。结果显示,黄连解毒汤抑菌效果最优的提取工艺为:料液比1:30,乙醇浓度60%,温度80℃,提取时间1 h,提取次数2次,测得乙酸乙酯萃取物MIC90为0.3125 mg/mL。与模型组相比,黄连解毒汤乙酸乙酯提取物(EAHD)高剂量组能显著降低小鼠肾脏真菌负荷量(P<0.05),完全治愈率达40%,并明显高于氟康唑组;EAHD低、中和高剂量组(50、100及200 mg/(kg·d))均能显著降低肝脏真菌负荷量(P<0.05),其中中剂量组和氟康唑组降低肝脏真菌负荷量效果接近。同时EAHD高剂量组能显著或极显著降低感染后小鼠肾脏和肝脏ROS含量(P<0.05;P<0.01);显著或极显著提高血清中IL-6、IL-1β和TNF-α的含量(P<0.05;P<0.01),同时降低pro-IL-1β含量。综上所述,通过优化后的提取工艺得到的EAHD具有降低模型小鼠肾脏和肝脏ROS含量和调控炎症因子的作用,进而降低炎症反应,起到保护组织和抵抗白色念珠菌的作用。 相似文献
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自制清热解毒口服液的药理实验研究 总被引:1,自引:0,他引:1
清热解毒口服液为治疗温热病的清热解毒剂。现代药理学的研究表明,本方剂药物对溶血性链球菌、脑膜炎球菌、肺炎双球菌、霍乱弧菌、炭疽杆菌、白喉杆菌、枯草杆菌、绿色链球菌均有抑制作用;对伤寒杆菌、副伤寒杆菌、大肠杆菌、变形杆菌、八联球菌、肺炎杆菌、百日咳杆菌、鼠疫杆菌、布氏杆菌、破伤风杆菌、产气荚膜杆菌、结核杆菌等亦有效。其药理作用主要表现在抗病原微生物的作用、清热解毒作用、 相似文献
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为了评价鱼腥草芩蓝口服液的毒性,为临床安全用药提供依据。以昆明小鼠和SD大鼠为研究对象进行鱼腥草芩蓝口服液急性和长期毒性试验。急性毒性试验中,采用最大给药量试验,以健康小鼠20只,24 h内按68 g/kg体重灌胃给药3次,给药后连续观察10 d,测定其最大给药量。长期毒性试验中,将80只健康大鼠随机分为对照组和高、中、低剂量组,每组雌雄各10只。对照组按20 m L/kg灌服生理盐水,给药组分别按34、17和8.5 g/kg灌服鱼腥草芩蓝口服液,每天一次,连续给药35 d。结果显示,小鼠灌服鱼腥草芩蓝口服液的最大给药量为204 g/kg。鱼腥草芩蓝口服液对试验大鼠的精神状态、脏器指数、生理生化指标均没有影响,且对主要脏器也没有明显的病理组织学损伤。结果表明鱼腥草芩蓝口服液在临床应用是安全的。 相似文献
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越来越多的国家禁止抗生素生长促进剂的使用,使得养殖业面临肠道微生物病原过度增殖的风险更高,这些病原会导致肠道功能紊乱、垫料潮湿、死亡率增加和以及生产性能改变。因此,需要寻求一种能控制 相似文献
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两种复方中草药体外抗菌活性及对人工诱发雏鸡大肠杆菌病的预防作用 总被引:1,自引:0,他引:1
1试验目的为评价复方中草药Ⅰ、Ⅱ对鸡大肠杆菌病的预防效果,本试验通过人工诱发雏鸡的大肠杆菌病,然后给予不同的复方中草药Ⅰ、Ⅱ,比较其与对照药物庆大霉素的预防效果,分析该复方中草药对鸡大肠杆菌病的预防作用。 相似文献