Infertility in female rabbits immunized with lactate dehydrogenase X

Immunization of female rabbits with the sperm-specific lactate dehydrogenase (LDH-X) resulted in a highly significant reduction of pregnancies compared to nonimmunized controls. This is the first demonstration of immunosuppression of fertility by a crystalline protein shown to be strictly homogeneous by ultracentrifugation, polyacrylamide gel electrophoresis, immunodiffusion, and micro complement fixation.     

β-hemA-ISCOMs对鳗鲡的口服免疫效果

携带嗜水气单胞菌β-溶血素基因的重组菌可表达具天然活性的β-溶血素。重组菌胞外产物制成的ISCOMs(β-hemA-ISCOMs)经由肠胃途径免疫,可显著提高鳗鲡淋巴细胞的增殖转化能力(P<0.05),并诱导免疫保护,一次免疫的攻毒存活率为44.4%。二次免疫的攻毒存活率为100%。本研究首次将ISCOMs技术应用于鳗鲡口服免疫,试验结果表明ISCOMs技术在发展鱼类口服型疫苗上有广阔的应用前景。     

Plasticity of motor behavior in monkeys with crossed forelimb nerves

Monkeys in which nerves innervating the flexor muscles of the forearm and hand (the ulnar or the median nerve) had been surgically cross-united with the nerve innervating the extensor muscles (the radial nerve), and vice versa, showed excellent (ulnar-radial crosses) to moderate (median-radial crosses) control of movement performance after regeneration. Antagonistic movement responses were seen occasionally, but these were corrected almost immediately. Stimulation of the crossed nerves showed that they had innervated the antagonistic muscle groups. The results reveal the capacity of the primate central nervous system to adapt to gross disturbances imposed on the execution of movements by changes in peripheral innervation.     

Acute lymphocytic leukemia in owl monkeys inoculated with herpesvirus saimiri

Our study demonstrates for the first time that Herpesvirus saimiri can induce acute lymphocytic leukemia in owl monkeys (Aotus trivirgatus) and that malignant lymphoma can be induced in this species of nonhuman primates by the inoculation of the virus by various routes (intravenous, sub-cutaneous, and intradermal).     

鹦鹉热衣原体重组主要外膜蛋白免疫肉鸡效果观察

利用鹦鹉热衣原体重组主要外膜蛋白 (MOMP)在大肠杆菌中的表达产物 ,纯化后与白油佐剂乳化成疫苗。对 3批疫苗物理性状、无菌试验、安全试验、最小保护剂量、效力检验、免疫期、保存期和田间试验等各项技术指标进行了测定。重组MOMP疫苗为乳白色油包水型疫苗 ,黏度为 8s·0 4mL-1;细菌培养阴性 ;10d肉鸡分别以5 0和 10 0 μg注射免疫后 ,观察 14d ,免疫鸡群除一过性发蔫外 ,临床采食、饮水 ,注射部位剖检无异常变化 ;以 2 5 ,5 0 ,10 0和 2 0 0 μg分别免疫肉鸡后 ,30d龄攻毒 ,发现 5 0 μg免疫组可以抵抗病原的攻击 ;选择每只 5 0 μg免疫肉鸡 ,分别在 4 0 ,5 0和 6 0d攻毒 ,其保护率分别为 94 % ,95 %和 84 %。疫苗 2～ 8℃可储存 2 4 0d ,室温 ( 2 1～ 2 5℃ )、37℃不要超过 30d ;利用本疫苗免疫肉鸡 4 0 0 0 0只 ,保护率达 93% ,对照组为 85 %。本疫苗安全性高、保护率高、无副作用 ,能有效控制鹦鹉热衣原体的侵害。     

Pregnancy interception with a combination of prostaglandins: studies in monkeys

Treatment with combinations of synthetic prostaglandins, one with an ovarian site of action and one with a uterine site of action, terminated pregnancy in all rhesus monkeys given the injection on day 28 of fertile menstrual cycles. Single prostaglandins, even at higher doses, interrupted pregnancy in only one-third of the monkeys. The most effective treatment, 5-oxa-17-phenyl-18,19,20-trinor prostaglandin F1 alpha methyl ester plus 9-deoxo-16,16-dimethyl-9-methylene prostaglandin E2, promptly intercepted early pregnancy after a single administration and without side effects.     

Complementary hemispheric specialization in monkeys

Twenty-five split-brain monkeys were taught to discriminate two types of visual stimuli that engage lateralized cerebral processing in human subjects. Differential lateralization for the two kinds of discriminations was found; the left hemisphere was better at distinguishing between tilted lines and the right hemisphere was better at discriminating faces. These results indicate that lateralization of cognitive processing appeared in primates independently of language or handedness. In addition, cerebral lateralization in monkeys may provide an appropriate model for studying the biological basis of hemispheric specialization.     

Delayed alternation in hemicerebrectomized monkeys

Monkeys subjected to extensive unilateral brain extirpation learned a delayed alternation task, although their rates of learning were significantly lower than those of a control group of normal animals. Visual field defects did not seem to account for the deficit.     

Autoimmune chorioretinitis in rhesus monkeys

Monkeys injected with monkey retinal tissue incorporated in Freunld's complete adjuvant developed ocular lesions characterized by choroiditic patches in the fundus periphery and sheathing of retinal vessels. Bovine retina, monkey choroid plexus, and guinea pig kidney were ineffective in this respect.     

细菌亚单位疫苗免疫小鼠的细胞免疫指标检测

将嗜水气单胞菌的胞外毒素（ＨＥＣ）和胞外蛋白酶（ＥＣＰａｓ）与迟缓爱德华氏菌脂糖（ＬＰＳ）、脱毒多糖（ＰＳ）偶联,制成３种亚单位偶联疫苗（ＨＥＣ－ＰＳ、ＨＥＣ－ＬＰＳ、ＥＣＰａｓｅ－ＰＳ）,分别免疫小鼠。另设这两种细菌的全菌灭活苗免疫及注射生理盐水对照组,每组８只。在第２次免疫后第７天用四甲基偶氮唑盐比色法（ＭＴＴ）,检测脾淋巴细胞转化率与腹腔巨噬细胞吞噬活性,并检测各组小鼠的全菌凝集抗体。结果表     

ND疫苗免疫益生素雏鸡vNDV攻击后外周血液免疫变化

应用免疫SPA菌体花环法、间接ELISA法、酸性非特异性酯酶染色法较全面系统地检测了新城疫(ND)疫苗免疫应用益生素雏鸡新城疫强毒(vNDV)攻击后,其外周血液的T、B淋巴细胞数量,IgG、IgM、IgA含量的动态变化及免疫保护率。结果表明,ND免疫应用益生素雏鸡vNDV攻击后,不但其外周血液的上述被检指标较未饲喂益生素的相应对照雏鸡不同程度增加,而且其免疫保护率也明显提高,表明益生素可增强雏鸡外周血液对ND疫苗免疫的体液和细胞免疫应答。并且益生素Ⅰ组又略强于益生素Ⅱ组,说明益生素Ⅰ的免疫增强效果优于益生素Ⅱ。     

Induction of AIDS-like disease in macaque monkeys with T-cell tropic retrovirus STLV-III

The T-cell tropic retrovirus of macaque monkeys STLV-III has morphologic, growth, and antigenic properties indicating that it is related to HTLV-III/LAV, the etiologic agent of the acquired immune deficiency syndrome (AIDS) in humans. Four of six rhesus monkeys died within 160 days of STLV-III inoculation with a wasting syndrome, opportunistic infections, a primary retroviral encephalitis, and immunologic abnormalities including a decrease in T4+ peripheral blood lymphocytes. These data show that an immunodeficiency syndrome can be produced experimentally in a nonhuman primate by an agent from the HTLV-III/LAV group of retroviruses. The STLV-III-macaque system will thus provide a useful model for the study of antiviral agents and vaccine development for human AIDS.     

Amygdalectomy impairs crossmodal association in monkeys

Monkeys trained on both visual and tactual versions of an object memory task (delayed nonmatching-to-sample) received bilateral ablations of either the amygdaloid complex or the hippocampal formation of the brain. Although both groups performed well on the two intramodal versions (visual-to-visual and tactual-to-tactual), the amygdalectomized monkeys were severely impaired relative to the hippocampectomized monkeys on a crossmodal version (tactual-to-visual). The findings suggest that the amygdala is critical for certain forms of crossmodal association and that the loss of such associations underlies many of the bizarre behaviors that make up the Klüver-Bucy syndrome.     

Reversible combination of carbon monoxide with a synthetic oxygen carrier complex

Chlorocarbonyl-bis(triphenylphosphine)iridium(I), in solution, reacts reversibly with carbon monoxide under normal conditions, one molecule per metal atom. Formation of a 1 : 1 metal complex-CO adduct is verified by CO absorption measurements and the infrared spectrum of the adduct measured in situ. The spectrum suggests that the metal-C-O bonding is of the type found in conventional metal carbonyl.