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目的:探讨自拟滋阴益气活血组方对链脲佐菌素(STZ)糖尿病大鼠免疫器官影响。方法:用STZ尾静脉注射45mg/kg诱导建立糖尿病大鼠模型,将符合糖尿病诊断标准的大鼠随机分为模型对照组(n=15)和组方治疗组(n=15),同时设正常对照组(n=20)。组方治疗组灌胃滋阴益气活血组方水煎液10mL/kg.d,模型对照组和正常对照组灌胃相同剂量的生理盐水,连续灌胃56d。灌胃第14、28、42、56天眶后静脉丛采血,制备血清以测定血糖(GLU)水平。第56天剖杀大鼠,取脾脏、胸腺组织,制作切片,观察组织结构。结果:第56天时,组方治疗组的血糖水平极显著低于模型对照组(P0.01),基本接近正常水平;与模型对照组相比,组方治疗组可显著提高脾脏指数和胸腺指数;模型对照组脾小结数量较少,生发中心不够明显;组方治疗组脾小结数量体积较正常,可以见到生发中心;模型对照组胸腺组织结构变化明显,胸腺小体数量较少;治疗组胸腺小叶较大,胸腺小体较多。结论:自拟滋阴益气活血组方能够降低糖尿病大鼠的血糖,对STZ糖尿病大鼠的脾脏、胸腺及其组织结构损伤有一定的治疗作用。 相似文献
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《中兽医医药杂志》2010,(1)
目的:探讨丹参对糖尿病大鼠脂代谢的影响。方法:按照60mg/kg体重腹腔注射链脲佐菌(STZ),建立Ⅱ型糖尿病大鼠模型,将大鼠30只随机分为丹参治疗组和模型对照组(n=15)。治疗组给予丹参水煎剂15mg/kg·d,模型对照组和正常对照组给予相同剂量的蒸馏水,试验期为28d。给药后7、14、21、28d分别空腹取大鼠静脉血,分离血清,检测血糖、甘油三酯和总胆固醇含量变化,研究丹参对糖尿病大鼠脂代谢的影响。结果:用药28d后,丹参治疗组与模型对照组血糖水平差异不显著,与正常对照组相比较差异显著(P0.05);丹参治疗组甘油三酯、总胆固醇含量较模型对照组降低显著(P0.05),与正常对照组相比较差异不显著(P0.05)。结论:丹参对链脲佐菌糖尿病大鼠脂代谢有显著影响。 相似文献
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目的：探讨丹参对糖尿病大鼠脂代谢的影响。方法：按照60mg／kg体重腹腔注射链脲佐茵（STZ）,建立Ⅱ型糖尿病大鼠模型,将大鼠30只随机分为丹参治疗组和模型对照组（n=15）。治疗组给予丹参水煎剂15mg／kg·d,模型对照组和正常对照组给予相同剂量的蒸馏水,试验期为28d。给药后7、14、21、28d分别空腹取大鼠静脉血,分离血清,检测血糖、甘油三酯和总胆固醇含量变化,研究丹参对糖尿病大鼠脂代谢的影响。结果：用药28d后,丹参治疗组与模型对照组血糖水平差异不显著,与正常对照组相比较差异显著（P〈0．05）;丹参治疗组甘油三酯、总胆固醇含量较模型对照组降低显著（P〈0．05）,与正常对照组相比较差异不显著（P〉0．05）。结论：丹参对链脲佐茵糖尿病大鼠脂代谢有显著影响。 相似文献
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丹参对链脲佐菌糖尿病模型大鼠抗氧化功能的影响 总被引：1，自引：1，他引：0
为探讨丹参对链脲佐菌糖尿病模型大鼠血清抗氧化功能的影响,用链脲佐菌60 mg/kg腹腔注射法诱导建立糖尿病大鼠模型,将符合糖尿病诊断标准的大鼠,随机分为模型对照组(n=15)和丹参治疗组(n=15),并设立正常对照组(n=20)。丹参治疗组灌胃丹参水煎液每天5 mL/kg,模型对照组和正常对照组灌胃同样剂量的蒸馏水,试验期为28 d。灌胃后第7、14、21、28天眶后静脉丛采血,离心制血清测超氧化物歧化酶(SOD)、谷胱甘肽-过氧化物酶(GSH-Px)、过氧化氢酶(CAT)的活性及丙二醛(MDA)的含量。结果表明丹参治疗组的SOD、GSH-Px和CAT的活性较模型对照组差异极显著(P0.01),其上升趋势趋向于正常对照组的活性;丹参治疗组MDA的含量较模型对照组差异极显著(P0.01),其下降趋势趋向于正常对照组的含量。丹参对糖尿病大鼠的氧化应激有一定的减轻作用。 相似文献
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[目的]对糖尿病大鼠胃黏膜损伤模型进行观察及评价。[方法]采用腹腔注射链脲佐菌素结合30%乙醇灌胃的方法制作糖尿病大鼠胃黏膜损伤模型,动态观察动物临床症状、血糖、体重,以及各器官的重量指数和病理变化。[结果]糖尿病模型和糖尿病大鼠胃黏膜损伤模型的成模率分别为84%和64%;模型组动物普遍消瘦,心、肝、脾、胰各器官的重量下降,胰腺重量指数在第4周时下降,心、肝、肾重量指数在各时间点均上升,与正常组比较差异极显著(P<0.01);模型组大鼠的胰腺、胃、肾脏都出现了病理变化。[结论]采用腹腔注射链脲佐菌素结合30%乙醇灌胃的方法可成功诱导糖尿病大鼠胃黏膜损伤模型。 相似文献
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为了制备糖尿病大鼠模型,研究采用160～200 g SD雄性大鼠,一次性腹腔注射不同剂量的链脲佐菌素,通过测定试验鼠的血糖、体重、摄食量、饮水量、排尿量变化,观察大鼠的糖尿病发展病程,确定链脲佐菌素最佳用药剂量。结果表明:当给SD大鼠一次性腹腔注射65 mg/kg的链脲佐菌素后,SD大鼠表现出典型的糖尿病症状,即多饮、多食、多尿、体重下降的"三多一少"症状,成模率高,且成模饲养8周后血糖、体重变化不大,说明65 mg/kg为制备糖尿病大鼠模型的最佳剂量。 相似文献
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为探讨滋阴益气活血组方对链脲佐菌素(STZ)糖尿病大鼠糖代谢的影响,用STZ尾静脉注射45 mg/kg诱导建立糖尿病大鼠模型,将符合糖尿病诊断标准的大鼠,随机分为模型对照组(n=15)和组方治疗组(n=15)。同时设立正常对照组(n=20)。组方治疗组灌胃滋阴益气活血组方水煎液10 mL/kg.d,模型对照组和正常对照组灌胃相当剂量的生理盐水,灌胃期为56 d。灌胃第14、28、42、56天眶后静脉丛采血,离心制备血清以测血糖(GLU),第56天测血清糖化血清蛋白(GSP),处死大鼠取肝脏测肝糖原的含量。用组方治疗组水煎液连续灌胃8周后,该组大鼠的体重相对于模型对照组处于上升趋势;第56天时,血糖极显著低于模型对照组(P0.01),基本接近正常水平;糖化血清蛋白含量极显著低于模型对照组(P0.01),肝糖原含量极显著高于模型对照组(P0.01)。滋阴益气活血组方能够改善和纠正糖尿病大鼠糖代谢的异常,对临床研究中药治疗糖尿病具有指导意义。 相似文献
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为了研究体重与剂量对链脲佐菌素致糖尿病小鼠模型的影响,采用不同体重范围的雄性小鼠,对其腹腔注射不同剂量的链脲佐菌素,剂量范围为:100～300mg/(kg·bw),分5次注射造模。在不同时间测量试验鼠的血糖值、死亡率及成模率,观察小鼠的糖尿病发展病程,确定链脲佐菌素最佳用药剂量。结果表明,当给雄性小鼠腹腔注射200mg/(kg·bw)的链脲佐菌素后,造模成功率最高为85%,小鼠表现出典型的糖尿病症状,且成模饲养1周后血糖、体重变化不大,为制备糖尿病小鼠模型的最佳剂量;同等剂量的情况下,低体重小鼠比高体重小鼠的成模率高、死亡率低。 相似文献
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制备一种发病过程类似于人类2型糖尿病合并肾性高血压疾病的大鼠模型。大鼠高脂高糖膳食4周后,予快速腹腔注射链脲佐菌素(STZ)溶液28mg/kg,制作成2型糖尿病模型。2周后,连续3d均测得空腹血糖(FBG)≥7.8mmoL/L或随机血糖(RBG)≥16.7mmol/L,为2型糖尿病成模标准。待血糖稳定后,再用改良的"两肾一夹法"结扎肾动脉,造成一侧肾动脉狭窄,形成肾性高血压。2周后,连续3d均测得大鼠收缩压(SBP)≥140mmHg,同时FBG≥7.8mmol/L或RBG≥16.7mmol/L,确定为2型糖尿病合并肾性高血压模型制作成功。4周后,模型大鼠血糖、血压稳定。与空白对照组相比,复合模型组大鼠出现体重减轻、空腹血糖升高、糖化血红蛋白值升高(P0.01),血压升高(P0.01);与糖尿病组和假手术组相比,复合模型组大鼠血肌酐,尿素氮变化不明显(P0.05),但血压明显升高(P0.01);同时,彩超结果显示,复合模型组大鼠左侧肾脏、肾动脉直径均变小,血流速增快。大鼠高脂高糖膳食后,用低剂量链脲佐菌素(STZ)溶液腹腔注射,再用改良的"二肾一夹"法制备的2型糖尿病合并肾性高血压大鼠模型,在一定程度上较好地模拟出该疾病的发病特点,可为2型糖尿病合并肾性高血压后的临床及试验研究提供一个稳定、实用、有效的新模型。 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