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1.
用赭曲霉素Ａ（ＯＡ）－ＢＳＡ合成抗原免疫Ｂａｌｂ／ｃ小鼠，取免疫鼠脾细胞与ｓｐ２／０细胞融合，通过克隆和ＥＬＩＳＡ法筛选，建立三株泌抗ＯＡ单克隆抗体杂交瘤细胞株（３Ｃ１２，１Ｄ１２和２Ｇ７）。用间接ＥＬＩＳＡ法测定，细胞上清液抗体效价为１２８＾×（３Ｃ１２）和６４＾×（１Ｄ１２和２Ｇ７）腹水抗体效价为１０＾－７（３Ｃ１２，１Ｄ１２）和１０＾－６（２Ｇ７）。三株单抗（ＭｃＡｂ）均属ＩｇＧ类，分泌抗体 相似文献
2.
分泌抗鸡Ig单抗杂交瘤细胞系的建立与单抗生物学特性的鉴定 总被引：7，自引：0，他引：7
从传染性法氏囊病病毒（ＩＢＤＶ）单克隆抗体（ＭｃＡｂ）杂交瘤细胞系１Ｄ１０、１Ｇ１中得到了３株能稳定分泌抗鸡免疫球蛋白（Ｉｇ）ＭｃＡｂ的杂交瘤细胞系１Ｂ７、１Ｄ７、３Ｇ６。其抗体类和亚类均属ＩｇＧ２ｂ，腹水的ＥＬＩＳＡ效价≥１∶２５６００，琼扩效价为１∶８～１∶１６。３株ＭｃＡｂ能与鸡血清中的Ｉｇ出现沉淀反应，琼扩在２４ｈ以内出现清晰的沉淀线，而不能和鸭、鸽、鹌鹑等禽类及异种动物血清出现沉淀线。纯化的鸡ＩｇＧ、ＩｇＭ经ＳＤＳ－ＰＡＧＥ后，分别用纯化并经辣根过氧化物酶（ＨＰＲ）标记的１Ｂ７、１Ｄ７、３Ｇ６单抗酶结合物进行免疫印迹试验证明，３株单抗识别的均为ＩｇＧ、ＩｇＭ分子的轻链 相似文献
3.
用ＳＰ２／０骨髓瘤细胞与以羊源细粒棘球蚴原头节可溶性抗原免疫的Ｂａｌｌ／ｃ鼠脾细胞融合，经克隆和筛选后获得８株分泌抗ＳＰＡ的杂交瘤细胞株，即３Ａ４，１ＩＣ２，２Ｂ３，２Ｃ２，２Ｅ３，３Ｅ６，３Ｆ１０和２Ｃ２。亚类鉴定为ＩｇＧ１（３Ａ４，３Ｅ６，１Ｃ２，３Ｆ１０和３Ｃ２），ＩｇＧ２ｂ（２Ｃ２），ＩｇＧ３（２Ｅ３），ＩｇＧ总（２Ｂ３）。免疫双扩散法显示２Ｃ２腹水及２Ｂ３，２Ｃ２，２Ｅ３培养上清粗提物与 相似文献
4.
抗鸡传染性法氏囊病病毒单克隆抗体中和株的建立 总被引：6，自引：1，他引：5
将纯化的鸡传染性法氏囊病病毒（ＩＢＤＶ）组织毒免疫的ＢＡＬＢ／ｃ鼠脾细胞与ＳＰ２／０骨髓瘤细胞融合，用ＥＬＩＳＡ，病毒中和试验检测分泌抗体，获得了６株稳定分泌抗ＩＢＤＶ单隆抗体的杂交瘤细胞，命名为ＮＩＢ－１，ＮＩＢ－２，ＮＩＢ－３，ＮＩＢ－４，ＮＩＢ－５，ＮＩＢ－６；６株ＭＣＡｂ均具ＥＬＩＳＡ特性和免疫沉淀特性，亚类鉴定表明，前４株属于ＩｇＧ２ａ，后２株属于ＩｇＧ１。杂交瘤细胞冻存６个月后复苏，均 相似文献
5.
以提纯鸡ＩｇＧ做抗原免疫Ｂａｌｌ／ｃ小鼠，取鼠细胞在ＰＥＧ１０００作用下与小鼠骨髓细胞（Ｓｐ２／ｏＡｇ１４）融合，采用间接免疫荧光（ＩＦＡ）和酶联免疫吸附试验（ＥＬＩＳＡ）检测上清抗体，阳性孔经有限稀法进行细胞克隆，共获得了７株分泌抗鸡ＩｇＧ单克隆抗体的杂交瘤细胞（２Ｈ８、４Ｄ８、４Ｄ８、１Ｂ７、２Ａ７、２Ｂ３、１Ｇ１２、３Ｄ１２）将这些细胞分别接种间系小鼠制备出腹水抗体，ＥＬＩＳＡ效价可达１０＾ 相似文献
6.
有丝分裂原对离体boPBMC增殖和分泌Ig的作用 总被引：2，自引：1，他引：1
应用＾３Ｈ－ＴｄＲ掺入法，ＥＬＩＳＡ和ＦＡＣＳ研究了离体奶牛外周血单核细胞（ｂｐＰＢＭＣ）对有丝分裂原的免疫应答。ＰＷＭ和ＣｏｎＡ能不同程度地诱导ｂｏＰＢＭＣ增殖和分泌Ｉｇ；而ＳＥＢ只能使ｂｏＰＢＭＣ高度增殖而不分泌Ｉｇ（Ｐ〉０．０５）。ＰＷＭ诱导的ｂｏＰＢＭＣ经１２ｄ培养，其中ＣＤ４＋／ＣＤ８＋细胞的比率为２．９：１；而ＳＥＢ诱导的细胞为０．３：１。离体ｂｏＰＢＭＣ主要分泌ＩｇＭ和ＩｇＧ１，只有 相似文献
7.
禽多杀性巴氏杆菌单克隆抗体的制备及其基本性状研究 总被引：6，自引：2，他引：4
将多杀性巴氏杆菌（Ｐ．ｍ．）Ｃ４８－１株（Ｈｅｄｄｌｅｓｔｏｎ１型；Ｃａｒｔｅｒ分型５：Ａ）灭活后全菌免疫的ＢＡＬＢ／Ｃ小鼠脾细胞与ＳＰ／０骨髓瘤细胞在ＰＥＧ１０００作用下融合。用全菌包被的间接ＥＬＩＳＡ方法检测抗体，获得了２３株能稳定分泌抗Ｐ．ｍ．１型单克隆抗体的杂交瘤细胞。杂交瘤细胞培养２个月和冻存３个月后复苏培养，均能稳定分泌特异性单克隆抗体。２３株腹水ＥＬＩＳＡ效价分别从１０－３—１０－１１，无免疫沉淀性，也无凝集性。Ｉｇ类型鉴定表明，３株属于ＩｇＭ，２０株属于ＩｇＧ。间接ＥＬＩＳＡ检测结果表明：２３株单抗只与Ｐ．ｍ．１型起反应，而不与Ｐ．ｍ．３、４、１６型起反应，也不与禽类易感的鸡白痢沙门氏菌、大肠杆菌、葡萄球菌、李氏杆菌起反应，具有型的特异性。用ＩＣ８Ｈ９腹水建立的夹心ＥＬＩＳＡ方法检定Ｐ．ｍ．１型菌株，其敏感性高，特异性强，也更为方便。 相似文献
8.
通过ＳＤＳＰＡＧＥ、免疫印迹和相加ＥＬＩＳＡ分析了五株抗伪狂犬病病毒杂交瘤细胞系所分泌的单抗５Ｈ２、２Ｅ６、２Ｇ１１、３Ｄ１０和１Ｂ５（均为ＩｇＧ１）各自所识别的病毒多肽。结果证明：单抗５Ｈ２、２Ｅ６、２Ｇ１１和３Ｄ１０识别伪狂犬病病毒９７ＫＤ多肽，单抗１Ｂ５识别５４ＫＤ多肽。相加ＥＬＩＳＡ证实单抗５Ｈ２、２Ｅ６、２Ｇ１１和３Ｄ１０识别同一多肽的重叠表位或邻近表位。 相似文献
9.
以纯化的兔出血症病毒免疫ＢＡＬＢ／Ｃ鼠，应用杂交瘤技术获得了分泌抗ＲＨＤＶ单抗杂交瘤细胞１７株，其中有３株杂交瘤细胞分泌单抗的ＥＬＩＳＡ效价为１：４０９６００，１：４０９６；５株单抗具有血凝抑制活性。兔抗ＲＨＤＶ高兔血清对１７株ＭｃＡｂ的ＥＬＩＳＡ抑株为ＩｇＧ２ｂ。各株ＭｃＡｂ与欧洲棕色兔病病毒无抗原交叉反应，也无沉淀反应特性。 相似文献
10.
用绵羊肺炎支原体（ＭＯ）抗原免疫的ＢＡＬＢ／Ｃ小鼠，取血清抗体阳性免疫鼠的脾细胞与ＳＰ２／Ｏ细胞在聚乙二醇作用下进行融合，产生杂交瘤细胞、用间接ＥＬＩＳＡ法对杂交瘤细胞生长孔上清液进行检测，筛选阳性杂交瘤细胞株．以有限稀释法克隆１～２次，得到６株分泌抗绵羊肺炎支原体抗原的单克隆抗体（ＭｃＡｂ）杂交瘤细胞株．选择抗体分泌较高的１４Ａ６、７Ａ２７、Ｂ３８进行了较详细的研究，结果表明，其核内染色体数为９４～９６．抗体属性是：１株为ＩｇＧ２ａ、２株为ＩｇＧ１．用间接ＥＬＩＳＡ法对３株ＭｃＡｂ作符异性分析、该ＭｃＡｂ只特异地与绵羊肺炎支原体抗原发生反应，而不与猪肺炎支原体、山羊无乳症支原体抗原发生反应．将杂交瘤细胞注射ＢＡＬＢ／Ｃ小鼠诱生腹水．其抗体效价提高１００倍．杂交瘤细胞在液氮中保存１～２年后复苏仍能稳定地分泌抗绵羊肺炎支原体ＭｃＡｂ。 相似文献
11.
试验选用96头平均体重14.82 kg左右的杜×长×大断奶仔猪,随机分成4组,每组3栏,每栏8头(公母各半)。对照组饲喂基础日粮,试验1、2、3组分别添加1%80目白术、0.2%白术多糖和1%微米白术。试验期30 d。结果表明:在生长性能方面,与对照组相比,1%微米白术添加组可显著提高日增重(P0.05)、降低饲料增重比和腹泻率,而且效果优于1%80目白术组和0.2%白术多糖组,在肠道形态和肠道微生态区系方面,与对照组相比,日粮添加1%80目白术、0.2%白术多糖、1%微米白术均可不同程度的提高十二指肠和空肠的绒毛高度,加深十二指肠和空肠的隐窝深度,并且增加肠道微生态区系的多样性,其中以1%微米白术添加组的效果最佳。 相似文献
12.
Sissay, M.M., Uggla, A. and Waller, P.J., XXXX. Prevalence and seasonal incidence of nematode parasites and fluke infections
of sheep and goats in eastern Ethiopia. Tropical Animal Health and Production, XXXX. A 2-year abattoir survey was carried out to determine the prevalence, abundance and seasonal incidence of gastro-intestinal
(GI) nematodes and trematodes (flukes) of sheep and goats in the semi-arid zone of eastern Ethiopia. During May 2003 to April
2005, viscera including liver, lungs and GI tracts were collected from 655 sheep and 632 goats slaughtered at 4 abattoirs
located in the towns of Haramaya, Harar, Dire Dawa and Jijiga in eastern Ethiopia. All animals were raised in the farming
areas located within the community boundaries for each town. Collected materials were transported within 24 h to the parasitology
laboratory of Haramaya University for immediate processing. Thirteen species belonging to 9 genera of GI nematodes (Haemonchus contortus, Trichostrongylus axei, T. colubriformis, T. vitrinus, Nematodirus filicollis, N. spathiger, Oesophagostomum
columbianum, O. venulosum, Strongyloides papillosus, Bunostomum trigonocephalum, Trichuris ovis, Cooperia curticei and Chabertia ovina), and 4 species belonging to 3 genera of trematodes (Fasciola hepatica, F. gigantica, Paramphistomum {Calicohoron} microbothrium and Dicrocoelium dendriticum) were recorded in both sheep and goats. All animals in this investigation were infected with multiple species to varying
degrees. The mean burdens of adult nematodes were generally moderate in both sheep and goats and showed patterns of seasonal
abundance that corresponded with the bi-modal annual rainfall pattern, with highest burdens around the middle of the rainy
season. In both sheep and goats there were significant differences in the mean worm burdens and abundance of the different
nematode species between the four geographic locations, with worm burdens in the Haramaya and Harar areas greater than those
observed in the Dire Dawa and Jijiga locations. Similar seasonal variations were also observed in the prevalence of flukes.
But there were no significant differences in the prevalence of each fluke species between the four locations. Overall, the
results showed that Haemonchus, Trichostrongylus, Nematodirus, Oesophagostomum, Fasciola and Paramphistomum species were the most abundant helminth parasites of sheep and goats in eastern Ethiopia. 相似文献
13.
Tropical Animal Health and Production - 相似文献
14.
Rassnick KM Gieger TL Williams LE Ruslander DM Northrup NC Kristal O Myers NC Moore AS 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2001,15(3):196-199
1-(2-Chloroethyl)3-cyclohexyl-1-nitrosourea (CCNU) is an alkylating agent in the nitrosourea subclass. A prospective evaluation of CCNU was done to determine the maximally tolerated dosage of CCNU in tumor-bearing cats. Response data were obtained when available. Twenty-five cats were treated with CCNU at a dosage of 50-60 mg/m3 body surface area. Complete hematologic data were available for 13 cats. Neutropenia was the acute dose-limiting toxicity. The median neutrophil count at the nadir was 1,000 cells/microL (mean, 2,433 cells/microL; range, 0-9,694 cells/microL). The time of neutrophil nadir was variable, occurring 7-28 days after treatment, and counts sometimes did not return to normal for up to 14 days after the nadir. Based on these findings, a 6-week dosing interval and weekly hematologic monitoring after the 1st treatment with CCNU are recommended. The nadir of the platelet count may occur 14-21 days after treatment. The median platelet count at the nadir was 43,500 cells/microL. No gastrointestinal, renal, or hepatic toxicities were observed after a single CCNU treatment, and additional studies to evaluate the potential for cumulative toxicity should be performed. Five cats with lymphoma and 1 cat with mast cell tumor had measurable responses to CCNU. Phase II studies to evaluate antitumor activity should be completed with a dosing regimen of 50-60 mg/m3 every 6 weeks. 相似文献
15.
H Hayashi T Yoshimura J Y Chen 《Comparative immunology, microbiology and infectious diseases》1985,8(2):73-87
Our particular attention in this article was given to natural mediators for macrophages isolated from the sites of tissue injury. A number of chemotactic factors, which may satisfy many criteria making them acceptable as inflammatory leucocyte chemotactic factors, has been separated. Among them, our laboratory has isolated three macrophage (monocyte) chemotactic factors (MCF-a, -b and -c). Their purification, characterization and functional specificity are discussed. 相似文献
16.
Furosemide continuous rate infusion in the horse: evaluation of enhanced efficacy and reduced side effects 总被引：1，自引：0，他引：1
Johansson AM Gardner SY Levine JF Papich MG LaFevers DH Fuquay LR Reagan VH Atkins CE 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2003,17(6):887-895
Continuous rate infusion (CRI) of furosemide in humans is considered superior to intermittent administration (IA). This study examined whether furosemide CRI, compared with IA, would increase diuretic efficacy with decreased fluid and electrolyte fluctuations and activation of the renin-angiotensin-aldosterone system (RAAS) in the horse. Five mares were used in a crossover-design study. During a 24-hour period, each horse received a total of 3 mg/kg furosemide by either CRI (0.12 mg/kg/h preceded by a loading dose of 0.12 mg/kg IV) or IA (1 mg/kg IV q8h). There was not a statistically significant difference in urine volume over 24 hours between methods; however, urine volume was significantly greater after CRI compared with IA during the first 8 hours ([median 25th percentile, 75th percentile]: 9.6 L [8.9, 14.4] for CRI versus 5.9 L [5.3, 6.0] for IA). CRI produced a more uniform urine flow, decreased fluctuations in plasma volume, and suppressed renal concentrating ability throughout the infusion period. Potassium, Ca, and Cl excretion was greater during CRI than IA (1,133 mmol [1.110, 1,229] versus 764 mmol [709, 904], 102.7 mmol [96.0, 117.2] versus 73.3 mmol [65.0, 73.5], and 1,776 mmol [1,657, 2.378] versus 1,596 mmol [1,457, 1,767], respectively). Elimination half-lives of furosemide were 1.35 and 0.47 hours for CRI and IA, respectively. The area under the excretion rate curve was 1,285.7 and 184.2 mL x mg/mL for CRI and IA, respectively. Furosemide CRI (0.12 mg/kg/h) for 8 hours, preceded by a loading dose (0.12 mg/kg), is recommended when profound diuresis is needed acutely in horses. 相似文献
17.
B. Cinar Kul N. Bilgen J.A. Lenstra O. Korkmaz Agaoglu B. Akyuz O. Ertugrul 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2015,132(6):449-453
Genetic variations in chromosome Y are enabling researchers to identify paternal lineages, which are informative for introgressions and migrations. In this study, the male‐specific region markers, sex‐determining region‐Y (SRY), amelogenin (AMELY) and zinc finger (ZFY) were analysed in seven Turkish native goat breeds, Angora, Kilis, Hair, Honaml?, Norduz, Gürcü and Abaza. A SNP in the ZFY gene defined a new haplotype Y2C. All domestic haplogroups originate from Capra aegagrus, while the finding of Y1A, Y1B, Y2A and Y2C in 32, 4, 126 and 2 Turkish domestic goats, respectively, appears to indicate a predomestic origin of the major haplotypes. The occurrence of four haplotypes in the Hair goat and, in contrast, a frequency of 96% of Y1A in the Kilis breed illustrate that Y‐chromosomal variants have a more breed‐dependent distribution than mitochondrial or autosomal DNA. This probably reflects male founder effects, but a role in adaptation cannot be excluded. 相似文献
18.
Ling GV Thurmond MC Choi YK Franti CE Ruby AL Johnson DL 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2003,17(6):817-823
The objective of this report was to characterize 20-year changes in proportion of calcium oxalate (CaOx) calculi and struvite calculi in dogs, and associations with breed, age, and sex. In this retrospective study, results of analysis of urinary calculi from dogs were reviewed for specimens received between July 1, 1981, and December 31, 2001. Breed, sex, age, year of submission of the specimen, and mineral type(s) were analyzed statistically. CaOx or Struvite or both were contained in 18,966 of 20,884 (91%) specimens. For both sexes, a 20-year statistically significant increase was observed in the proportion of calculus specimens that contained CaOx. The increase in this proportion was greater in females (1% to 31%) than in males (18% to 82%). From 1998 to 2001, when proportions may have plateaued, the odds of specimens containing CaOx were markedly higher in 18 breeds, markedly lower in 5 breeds, and not significantly different in 13 breeds compared with crossbreds. For both sexes, a 20-year statistically significant decrease was observed in the proportion of calculus specimens that contained struvite. This decrease in proportion was greater for males (79-16%) than for females (97-68%). From 1998 to 2001, when proportions plateaued, the odds of calculi containing struvite were markedly lower in 20 breeds, markedly higher in 1 breed, and not significantly different in 15 breeds when compared with crossbreds. Breed, age, and sex were associated statistically with CaOx or struvite urolithiasis. In conclusion, there appears to have been a long-term increase in the proportion of specimens of canine urinary calculi that contain CaOx as well as a long-term decrease in the proportion of specimens of calculi that contain struvite for both male and female dogs. The rate of change appeared to begin leveling off in the period 1998 to 2001. The recent proportion of dogs with either CaOx- or struvite-associated urolithiasis may depend on breed, age, and sex, and on interactions among these 3 factors. 相似文献
19.
<正>1.INTRODUCTION Ensuring transportation network security is one Of the most daunting challenges confronting homeland security agencies today.Significant research has been dedicated.To model and analyze the vulnerability of transportation systems,while notably fewer studies propose specific strategies for deploying defensive technologies to safeguard these systems. 相似文献
20.
Waruiru RM Thamsborg SM Nansen P Kyvsgaard NC Bogh HO Munyua WK Gathuma JM 《Tropical animal health and production》2001,33(3):173-187
The epidemiology of H. placei and of other gastrointestinal nematodes in yearling dairy cattle was examined on two farms in Kiambu District, central Kenya during each of 13 one-month periods from April 1993 to April 1994. On each farm, 32 newly weaned dairy calves were given a single dose of albendazole and then placed on experimental pastures. Twelve of the animals were designated for bi-monthly slaughter (n = 2) and analysis of worm population characteristics and 20 were designated for blood and faecal collection and for weighing. Two parasite-free tracer calves were grazed alongside the weaner calves each month throughout the study period and were also slaughtered for analysis of worm populations. Faecal egg counts, haematological and serum pepsinogen determinations, herbage larval counts, and animal live weight changes were recorded monthly. The study revealed that Haemonchus placei, Trichostrongylus axei, Cooperia spp. and Oesophagostomum radiatum were responsible for parasitic gastroenteritis and that H. placei was the predominant nematode present in the young cattle on both farms. Faecal egg counts from resident cattle and necropsy worm counts revealed that pasture larval levels were directly related to the amount of rainfall. The total worm burdens in the animals were highest during the rainy season (March–June and October–December) and lowest during the dry seasons (July–September and January–February). The very low recovery of immature larvae of H. placei from the tracer calves indicated that arrested development is not a feature of the life cycle of this parasite in central Kenya. The maintenance of the parasite population depended on continuous cycling of infection between the host and the pasture. The agroclimatic conditions of the study area were such that, in general, favourable weather conditions for the development and survival of the free-living stages of gastrointestinal nematodes existed all year round. 相似文献