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1.
氨苄青霉素单抗鉴定与酶联免疫检测方法的初步研究 总被引：7，自引：1，他引：6
利用碳化二亚胺(EDC)法将氨苄青霉素(AMP)与匙孔嘁血蓝蛋白(m cKLH)偶联制备免疫原免疫Balb/c小鼠,应用杂交瘤技术将免疫鼠脾细胞与小鼠骨髓瘤细胞(SP2/0)融合,建立分泌氨苄青霉素单克隆抗体的杂交瘤细胞株。杂交瘤细胞染色体数目为97~104条,3D12株亚型为IgG2 a,用其制备的腹水ELISA效价达到2×106。亲和常数为3×10-10mol/L,抗体相对分子质量为1.54×105,与其他抗生素的交叉反应率小于0.01%。采用间接竞争ELISA方法建立检测AMP的标准曲线,在0.5~100 ng/mL范围内呈线形相关,回归方程为Y=0.056 9X+0.130 8,相关指数R2=0.994 8,以10%抑制率对应的浓度计算,该方法对AMP的检测限为0.3 ng/mL,对市售消毒纯牛奶模拟样品最低检测限为0.4 ng/mL。 相似文献
2.
采用碳化二亚胺法,将双氯青霉素(dicloxacillin)与牛血清白蛋白偶联制备免疫原,免疫BALB/c小鼠,取免疫小鼠的脾细胞与Sp2/0骨髓瘤细胞融合,间接ELISA筛选,阳性杂交瘤细胞用有限稀释法克隆,获得1株可稳定分泌McAb的杂交瘤细胞5D4-C9-C8;间接ELISA方法测定,其细胞上清抗体效价为1∶300,腹水效价为1∶3.5×105,为IgG1,与其结构类似物邻氯青霉素、苯唑青霉素的交叉反应率分别为17.6%和26.1%,与苄青霉素、羟氨苄青霉素和氨苄青霉素均无交叉反应性。体外传代培养和冻存复苏后抗体分泌稳定。为进一步研制检测双氯青霉素的ELISA试剂盒奠定了基础。 相似文献
3.
《畜牧与兽医》2014,(12):15-18
用酸酐法将氨苄青霉素(Ampicillin,AMP)偶联于载体蛋白牛血清白蛋白(BSA)和匙孔血蓝蛋白(Keyhole Limpet Hemocyanin,KLH),合成了免疫抗原AMP-KLH和检测抗原AMP-BSA,并进行了鉴定;用免疫抗原AMP-KLH免疫BALB/c小鼠,应用杂交瘤技术筛选出了3株分泌抗AMP单克隆抗体的杂交瘤细胞株。特性分析显示,单克隆抗体2C3、4E5和4C7的腹水效价分别为1∶1.02×106、1∶5.12×105和1∶5.12×105,其中2C3的AMP半数抑制浓度(IC50)为9.3 ng/m L,与青霉素类抗生素有明显交叉反应,其他类别抗生素的交叉反应率均小于0.01%。 相似文献
4.
《中国动物传染病学报》2015,(3)
应用重氮化方法制备了磺胺氯吡嗪钠(sulfachloropyrazine sodium,SPZ)完全抗原SPZ-OVA,将成功偶联的人工全抗原(SPZ-OVA)免疫BALB/c小鼠,免疫4次后,经间接ELISA检测,1号小鼠血清抗体效价达到1:6.4×104。取该小鼠脾细胞与SP2/0细胞融合。利用ELISA方法对融合后的杂交瘤细胞上清进行检测,筛选出能够稳定分泌抗体的细胞株:D9。将细胞株D9扩大培养后,经腹腔注射小鼠使其产生腹水。腹水单抗经纯化后,通过间接竞争ELISA对该单克隆抗体的效价、半数抑制浓度以及特异性进行检测。结果表明,所制备的单克隆抗体效价为1:4×105,半数抑制浓度为326 ng/m L,特异性良好。 相似文献
5.
采用碳二亚胺(EDC)法将氟罗沙星(FLE)与载体蛋白BSA、OVA分别偶联合成人工抗原BSA-FLE、OVA-FLE,通过聚丙烯酰胺凝胶电泳法和紫外分析法对合成的人工抗原进行了鉴定。BSA-FLE用作免疫抗原免疫Balb/C小鼠,OVA-FLE用作检测抗原包被酶标板检测抗体效价。免疫小鼠的脾细胞与SP2/0细胞融合获得了5株(4F11、2C3、8G2、3C1、2G8)稳定分泌抗FLE抗体的杂交瘤细胞株,抗体亚型鉴定均为IgG1。将3C1接种小鼠制备腹水,用辛酸-硫酸铵法对腹水进行纯化,纯化后腹水效价1∶1 024 000。抗体分子量160.766 KD,亲和常数为8.57×108M-1。 相似文献
6.
用小鼠骨髓瘤细胞(SP2/0)与经篮舌病病毒免疫的BALB/C小鼠脾细胞进行融合,产生杂交瘤细胞。以免疫荧光(间接法)和ELISA(间接法)进行杂交瘤抗体分泌检测,用有限稀释法进行3次克隆,获得5株抗体分泌稳定、产量高的单克隆抗体杂交瘤细胞株。 相似文献
7.
8.
制备抗促乳素(prolactin,PRL)的单克隆抗体。应用PRL纯品免疫BALB/c小鼠,被免疫小鼠的脾细胞与SP2/0骨髓瘤细胞融合,间接ELISA筛选阳性克隆,将阳性克隆多次有限稀释得到抗PRL阳性单克隆细胞株,杂交瘤细胞上清分离法和诱生腹水法制备单克隆抗体,测其效价。共建立5株持续分泌抗体的杂交瘤细胞,分别命名为AA5B1、AB6C8、BB3C1、CA6E4、CE2H6。杂交瘤细胞株冻存4个月后复苏培养,形态良好,生长旺盛。培养液上清及腹水效价的OD值略有升高,说明杂交瘤细胞株稳定。5株杂交瘤细胞染色体众数均为99～105,并可见到中部和亚中部着丝点的骨髓瘤细胞标志染色体,说明5株杂交瘤细胞确为SP2/0骨髓瘤细胞与被免疫小鼠的脾细胞融合而产生的。 相似文献
9.
己烯雌酚完全抗原及其单抗的制备与分析 总被引：1，自引：0，他引：1
为建立己烯雌酚免疫学检测技术,试验采用混合酸酐法制备完全抗原DES-HS-BSA,并对制备产物进行紫外光谱、红外光谱、SDS-PAGE、MS分析鉴定,以DES-HS-BSA免疫Balb/c小鼠,用ELISA试验测定抗体.结果表明:半抗原衍生物DES-HS已被成功地偶联到牛血清白蛋白上,计算得每分子牛血清白蛋白上结合26个DES-HS;ELISA试验结果证实免疫小鼠血清中含有抗己烯雌酚的抗体,将免疫好的小鼠脾脏细胞和SP2/0细胞融合,筛选出了1株能稳定分泌己烯雌酚单抗的杂交瘤细胞株18G5,抗体亚型为IgG3. 相似文献
10.
琥珀酸酐法将雌二醇(E2)衍生化,再用碳二亚胺法(EDC)将半抗原与BSA和OVA偶联,制备免疫原和检测抗原,紫外扫描和红外光谱鉴定表明人工抗原合成成功,E2与BSA偶联比为12.3∶1。将E2-BSA免疫BALB/c小鼠,细胞融合技术筛选抗E2杂交瘤细胞株,制备单克隆抗体。结果表明,筛选的3株杂交瘤细胞E2D5、E3F7和E4A6抗体效价均在8×104以上。以E3F7细胞株建立间接竞争ELISA(icELISA)标准曲线,其线性范围为0.0666.2μg/L,检测限和IC50值分别为0.03和0.76μg/L,除与去氢甲睾酮22.9%的交叉反应率外,与其他化合物无交叉反应。本研究为开发ELISA试剂盒,检测食源性动物产品中E2残留奠定基础。 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.
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
17.
Davis MS Willard MD Nelson SL Mandsager RE McKiernan BS Mansell JK Lehenbauer TW 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2003,17(3):311-314
Human and equine athletes are reported to have a high prevalence of gastric disease, and anecdotal evidence suggests a similar phenomenon applies to racing sled dogs. To investigate the prevalence of gastric disease in racing sled dogs, we conducted 2 gastroscopy studies on dogs competing in the annual Iditarod Sled Dog Race. A pilot study of dogs that were either dropped from the 2000 Iditarod Sled Dog Race because of illness or that finished the race indicated that, approximately 5 days after competing, 10 of 28 dogs (35%) had endoscopic evidence of gastric ulceration, erosion, or hemorrhage. The next year, an endoscopic study of 73 dogs participating in the 2001 Iditarod race was performed in order to evaluate a larger population of dogs. Data from 70 of these dogs could be used; 34 (48.5%) had ulceration, erosion, gastric hemorrhage, or some combination of these findings. When this group of 70 dogs was compared retrospectively to a control group of 87 dogs presented to the Texas A&M University (TAMU) Veterinary Medical Teaching Hospital, the Iditarod sled dogs had a significantly higher prevalence (P = .049) of gastric lesions. These findings suggest that, similar to athletes of other species, elite canine athletes have an increased prevalence of gastric disease compared to the canine population at large. 相似文献
18.
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
19.
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
20.
<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