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绒山羊肥大细胞类胰蛋白酶的免疫组化及图像分析研究 总被引：1，自引：0，他引：1
[目的]探讨绒山羊肥大细胞中是否存在类胰蛋白酶及不同固定液对其常规染色和免疫组化染色结果的影响。[方法]采用兔抗羊肥大细胞类胰蛋白酶多克隆抗体间接免疫过氧化物酶技术检测由Carnoy液和中性福尔马林液(NBF)固定的绒山羊空肠、瓣胃和肺等组织肥大细胞中是否存在类胰蛋白酶。同时采用Image-ProPlus图像分析软件和人工计数法对结果进行分析,比较经常规染色和免疫组化染色后不同固定液固定组织中肥大细胞的形态及数量,进而判断Carnoy液和中性福尔马林液(NBF)对该检测技术的影响。[结果]兔抗羊多克隆抗体与绒山羊肥大细胞中的类胰蛋白酶具有良好的交叉反应,证实绒山羊肥大细胞胞浆颗粒中存在类胰蛋白酶。同时,与Carnoy液相比较,NBF液固定组织能较好地反映肥大细胞在组织中的数量和形态变化。[结论]绒山羊肥大细胞中存在类胰蛋白酶,且与Carnoy液相比较,NBF液是一种更为适合绒山羊肥大细胞常规染色和免疫组化染色的固定剂。 相似文献
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为了探讨家兔黏膜免疫器官肥大细胞（MC）的分布、超微结构及巴氏杆菌感染后特征，对家兔空肠及圆小囊MC进行不同时间甲苯胺蓝染色与血管活性肠肽（VIP）和／或P物质（SP）免疫组化检查，并进行光、电镜观察。结果发现，采用不同固定液和染色方法所获得的MC数量不同，家兔黏膜免疫器官肥大细胞主要分布于黏膜固有层或黏膜下层结缔组织中；当巴氏杆菌感染时MC数量显著增加，这可能对机体的抗感染有重要意义。电镜下，MC胞浆内充盈大量呈电子密度不同的均质状物基质颗粒，未见特殊超微结构。 相似文献
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为了探讨不同固定液对鸭小肠肥大细胞甲苯胺蓝染色效果的影响及鸭小肠内肥大细胞的数量和分布情况，试验选择5只100日龄的健康淮南麻鸭公鸭为研究对象，取鸭只十二指肠、空肠和回肠组织样品，均分为两份，分别置于10%中性福尔马林固定液和卡恩氏(Carnoy)固定液中固定，常规制作石蜡切片，切片经甲苯胺蓝染色后，观察小肠肥大细胞染色效果和肥大细胞形态、数量及分布，并进行统计分析。结果表明：Carnoy固定液对肥大细胞的染色效果优于10%中性福尔马林固定液，染色评分极显著高于10%中性福尔马林固定液(P<0.01);Carnoy固定液固定的十二指肠、空肠、回肠肥大细胞数量均极显著高于10%中性福尔马林固定液(P<0.01)。鸭十二指肠、空肠和回肠中肥大细胞形态和数目不同，在黏膜固有层血管、腺管周围的结缔组织中分布较多；空肠中肥大细胞数量最多，形态多样；十二指肠和回肠中肥大细胞数量递减，形态多为圆形。说明与10%中性福尔马林固定液相比，经Carnoy固定液固定的鸭小肠组织染色后，可清晰显示肥大细胞的形态分布。 相似文献
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将绒山羊的空肠用Carnoy氏液、Bouin氏液、4%的中性甲醛(NBF)及4%的多聚甲醛分别固定,然后进行常规甲苯胺蓝-藏红O复染法(MTB-S)和改良甲苯胺蓝-藏红O复染法(LTB-S)染色,光镜观察,探讨不同的固定液和染色方法对显示绒山羊空肠肥大细胞(MC)的影响。结果:绒山羊空肠组织采用Carnoy氏液固定,甲苯胺蓝-藏红O复染法和改良甲苯胺蓝-藏红O复染法对所有的肥大细胞均有较好的染色效果,而Bouin氏液、4%的中性甲醛(NBF)及4%的多聚甲醛固定的空肠,只有少量的MC显示。说明MTB-S与LTB-S均是绒山羊肥大细胞较好的染色方法,固定液配Carnoy氏液为佳。 相似文献
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奶牛发育各期乳腺肥大细胞的组织化学特性研究 总被引：1，自引：0，他引：1
本研究旨在对奶牛乳腺肥大细胞的组织化学特点进行研究。对奶牛发育各期乳腺进行取样,应用改良甲苯胺蓝染色法(MTB)和阿尔新蓝—番红鉴别染色法（AB-S）进行染色,观察肥大细胞的组织化学特点和数量变化特点。同时比较了甲苯胺蓝染色时两种固定液固定对乳腺肥大细胞着染的效果。奶牛不同发育时期乳腺肥大细胞只被阿尔新蓝染色,Carnoy氏液固定效果优于中性甲醛（NBF）,MTB的染色效果优于AB-S。奶牛乳腺肥大细胞的数量在泌乳各期和静止期有显著的变化。与静止期相比,泌乳期的乳腺肥大细胞数量明显减少(P＜0.05),分娩后60 d奶牛乳腺肥大细胞的数量最少。奶牛乳腺只存在黏膜型肥大细胞;用Carnoy氏液固定,用MTB法染色可以很好地显示肥大细胞;泌乳期乳腺肥大细胞数量与静止期相比,明显减少。 相似文献
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目的：试验旨在通过对6月龄剑白香猪肥大细胞的观察,以期了解肥大细胞在剑白香猪不同组织器官的数量、分布及形态。方法：采集剑白香猪心、肝、脾、肺、肾、肾上腺、小肠等部位样品用多聚甲醛和carnoy’s液固定后,用甲苯胺蓝染色法检测各组织中肥大细胞数量、分布及形态,并用SPSS13．0软件进行统计分析。结果：试验表明,肥大细胞数量在不同性别问无明显差异;Carnoy’S固定液是测定猪各组织器官MC的较理想固定液;肥大细胞在各种组织中分布及形态复杂多样。本试验可为剑白香猪肥大细胞的进一步研究提供参考数据。 相似文献
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选择1日龄健康雏番鸭45只,随机分为3组,分别喂以每kg含锌离子20mg、40mg、200mg的饲料,饲养期为45d.于15日龄、30日龄和45日龄每组随机宰杀5只,取法氏囊、脾脏、胸腺,Camoy法固定,甲苯胺蓝染色,显微镜观察肥大细胞数量的变化规律.结果表明:15日龄时,低锌日粮组鸭子胸腺和脾脏的肥大细胞数量均比另外两组高,(P>0.05),而法氏囊中低锌日粮组肥大细胞数量比另外两组明显高(P<0.01).30日龄时,低锌日粮组鸭子胸腺、脾脏和法氏囊中肥大细胞数量均比高锌日粮组显著增多(P<0.05),而与正常锌日粮组相比,差异不显著(P>0.05).45日龄时,法氏囊高锌日粮组与低锌日粮组和正常锌日粮组差异显著(P<0.05);脾脏各组间差异不显著(P>0.05),但高锌日粮组肥大细胞数量最多;胸腺低辞日粮组与高锌日粮组和正常锌日粮组差异极显著(P<0.01).因此,锌具有稳定免疫器官中肥大细胞数量的重要作用,但长时间添加高剂量锌反而会增加肥大细胞数量. 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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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
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乳酸杆菌作为益生菌广泛用于人和动物.本文综述了乳酸杆菌改善宿主健康的机制.乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道.文章重点讨论了乳酸杆菌表面成分(表面蛋白、脂磷壁酸和肽聚糖)与肠道受体(C型凝集素受体、Toll样受体和Nod样受体),阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制. 相似文献
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Billinghurst RC Brama PA van Weeren PR Knowlton MS McIlwraith CW 《American journal of veterinary research》2004,65(2):143-150
OBJECTIVE: To determine whether serum concentrations of biomarkers of skeletal metabolism can, in conjunction with radiographic evaluation, indicate severity of osteochondrosis in developing horses. ANIMALS: 43 Dutch Warmblood foals with varying severity of osteochondrosis. PROCEDURE: 24 foals were monitored for 5 months and 19 foals were monitored for 11 months. Monthly radiographs of femoropatellar-femorotibial and tibio-tarsal joints were graded for osteochondral abnormalities. Serial blood samples were assayed for 8 cartilage and bone biomarkers. At the end of the monitoring period, foals were examined for macroscopic osteochondrosis lesions. RESULTS: Temporal relationships were evident between certain serum biomarkers and osteochondrosis severity in foals during their first year. Biomarkers of collagen degradation (collagenase-generated neoepitopes of type-II collagen fragments, type-I and -II collagen fragments [COL2-3/4C(short)], and cross-linked telopeptide fragments of type-I collagen) and bone mineralization (osteocalcin) were positive indicators of osteochondrosis severity at 5 months of age. In foals with lesions at 11 months of age, osteochondrosis severity correlated negatively with COL2-3/4C(short) and osteocalcin and positively with C-propeptide of type-II procollagen (CPII), a collagen synthesis marker. Radiographic grading of osteochondrosis lesions significantly correlated with macroscopic osteochondrosis severity score at both ages and was strongest when combined with osteocalcin at 5 months and CPII at 11 months. CONCLUSIONS AND CLINICAL RELEVANCE: The ability of serum biomarkers to indicate osteochondrosis severity appears to depend on stage of disease and is strengthened with radiography. In older foals with more permanent lesions, osteochondrosis severity is significantly related to biomarker concentrations of decreased bone formation and increased cartilage synthesis. 相似文献