瘦素影响强直性脊柱炎Th17相关细胞因子表达的研究     

李国青  刘延庆  张育  郭试瑜  久光正 《扬州大学学报(农业与生命科学版)》2010,31(4)

取30例强直性脊柱炎(AS)患者和30例健康对照组外周血清和膝关节滑液,采用放射性免疫法和双抗体夹心酶免疫吸附法分析瘦素(leptin)、IL-17、TNF-α、IL-6含量,探讨leptin、Th17细胞因子与AS病情活动的相关性。结果表明:AS患者外周血和膝关节滑液中leptin、IL-17、TNF-α、IL-6含量比健康对照组明显升高(P0.01)。AS外周血和关节滑液中leptin的表达水平与IL-17、IL-6呈显著相关(P0.01),与TNF-α表达相关不显著。AS患者外周血清和关节滑液中leptin、IL-17、IL-6平均表达水平与AS患者的血沉、C-反应蛋白、Bath强直性脊柱炎活动指数呈显著相关(P0.05),TNF-α的表达水平与AS病情活动指标相关不显著。说明leptin及Th17相关细胞因子在AS患者外周血和关节滑液中明显升高,可能直接参与了AS关节炎症过程。  相似文献   

Evaluation of Short-term Myelotoxicity Study in Dietary Reduced Rats     

Asanuma F  Miyata H  Iwaki Y  Kimura M  Matsumoto K 《Journal of toxicologic pathology》2010,23(1):31-37

This study attempted to prove our hypothesis that a short-term toxicity study, using a 4-day dosing regimen as an example, is suitable for evaluating myelotoxicity in rats. We compared the hematological, bone marrow cytological and histopathological results of 5-fluorouracil (5-FU) treated and pair-feeding groups after a 4-day administration period. Several experimental groups were defined for this 4-day study as well as for our previously reported 14-day study (Miyata et al., 2009); these included 5-FU treated groups receiving 12, 15 and 18 mg/kg/day (FU12, FU15 and FU18), pair-feeding groups (R12, R15 and R18 receiving the same amount of food as the FU12, FU15 and FU18 groups, respectively) and a nontreated control group. Although severe reductions in body weight gain and food consumption were reported in the 14-day study, only slight reductions were observed in the 4-day study. In the 4-day study, a decrease in blood reticulocytes and a decreasing trend of marrow erythroid cells were only observed in the FU18 group, and no effects were observed in the pair-feeding groups. The erythroblastic changes observed in this 4-day study were thought to reflect the direct influence of 5-FU administration. Since concerns regarding the influence of secondary changes related to undernutrition were minimized in the 4-day study, it was thought to clarify the direct influence of 5-FU administration on erythroblastic cells. Thus, a 4-day study protocol might be helpful for distinguishing secondary changes related to undernutrition.  相似文献   

夏季飞来昆虫对放牧牛摆尾行为的影响   总被引：1，自引：1，他引：0  

敖日格乐  松井宽二  竹田谦一  久马忠 《中国牛业科学》2003,29(6):7-9

本研究选择黑毛和牛种牛4头作为实验牛。从2000年8月至10月，在0.8ha的实验牧草地进行了实验。实验结果表明：飞来昆虫消化的季节，飞来昆虫对放牧牛摆尾行为的影响可能存在个体飞来昆虫不仅引起牛的体表护理行为，还可能导致心理上的应激。  相似文献   

Preference for safflower oil in rats exposed to a cold environment under free-feeding conditions     

Saitoh M  Ishii T  Takewaki T  Nishimura M 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2005,67(7):653-658

There are several benefits to a high-fat diet for animals exposed to cold, including improved tolerance to severe cold conditions and increased survival rates in cold environments. It is therefore of interest to examine whether animals exposed to cold will selectively consume lipids. We examined the intake of safflower oil (SO) by rats exposed to cold (4 +/- 2 degrees C) under a feeding condition in which the rats were given free access to SO. Rats exposed to cold consumed more SO than those housed at 25 +/- 2 degrees C. This finding suggests that rats prefer SO in a cold environment. There was no significant difference in the ratio of calories of SO ingested to that of matter (standard laboratory chow plus SO) ingested between rats exposed to cold and those at 25 +/- 2 degrees C. The high SO intake also affected cold tolerance and metabolite kinetics in the rats. Factors that affected the SO intake of rats exposed to cold are also discussed.  相似文献   

Effects of delipidation and oxygen concentration on in vitro development of porcine embryos   总被引：3，自引：0，他引：3  

Yoneda A  Suzuki K  Mori T  Ueda J  Watanabe T 《The Journal of reproduction and development》2004,50(3):287-295

The effects of delipidation and the oxygen (O(2)) concentration in the atmosphere during culture on in vitro development and H(2)O(2) content were investigated in porcine in vivo fertilized embryos and embryos after in vitro maturation and in vitro fertilization (IVM/IVF embryos). There was no significant difference in the developmental rates to the blastocyst stage between the intact and delipidated IVM/IVF embryos. However, the mean number of cells in blastocysts derived from delipidated IVM/IVF embryos (19.8 +/- 0.8 cells) was significantly smaller than that from intact embryos (24.2 +/- 1.2 cells). Although there were no significant differences in the developmental rates to the blastocyst stage of intact and delipidated IVM/IVF embryos between the cultures under 5% O(2) and 20% O(2), the developmental rate of intact IVM/IVF embryos cultured under 5% O(2) (27.1%) was significantly higher than that of the delipidated embryos cultured under 20% O(2) (19.3%). On the other hand, there was no difference in the developmental rate to the blastocyst stage between in vivo fertilized embryos cultured under 5% O(2) and 20% O(2). Hydrogen peroxide (H(2)O(2)), one of the reactive oxygen species (ROS), is thought to cause damage to embryos. The H(2)O(2) content per embryo derived from oocytes cultured under 5% O(2) (in vivo fertilized, 58.0 +/- 2.5 pixels; IVM/IVF, 79.6 +/- 3.2 pixels) was significantly lower than that (in vivo fertilized, 100.2 +/- 3.8 pixels; IVM/IVF, 103.9 +/- 3.2 pixels) under 20% O(2). Furthermore, the level of H(2)O(2) in delipidated IVM/IVF embryos (94.7 +/- 3.9 pixels) was significantly lower than that in intact embryos (103.9 +/- 3.2 pixels) cultured under 20% O(2). The present results indicate that the delipidation of porcine IVM/IVF embryos and reduction of the O(2) concentration decreased the H(2)O(2) level rather than the in vitro developmental rate to the blastocyst stage.  相似文献   

Effects of midazolam-butorphanol, acepromazine-butorphanol and medetomidine on an induction dose of propofol and their compatibility in dogs   总被引：1，自引：0，他引：1  

Sano T  Nishimura R  Mochizuki M  Sasaki N 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2003,65(10):1141-1143

The effects of acepromazine-butorphanol (AB), midazolam-butorphanol (MB) and medetomidine (Med) on the induction dose of propofol and their compatibility with propofol were evaluated in client-owned dogs. All premedications induced good to excellent sedation and the induction dose of propofol was considerably reduced. Of the tested premedicants, Med induced the deepest sedation and the most potent dose-sparing effect. Induction of anesthesia was excellent to good in all dogs except for one dog premedicated with MB. Most dogs premedicated with AB or MB showed temporary apnea. Although other adverse effects such as bradycardia or hypotension may also occur, premedication with MB, AB or Med is a valuable technique for the induction of anesthesia with propofol in dogs in a clinical setting.  相似文献   

Effect of fusion/activation protocol on in vitro development of porcine nuclear transfer embryos constructed with foreign gene-transfected fetal fibroblasts     

Martinez Diaz MA  Mori T  Nagano M  Katagiri S  Takahashi Y 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2003,65(9):989-994

The effect of fusion/activation protocol on in vitro development of porcine nuclear transfer (NT) embryos constructed with foreign gene-transfected somatic cells were investigated. NT embryos were produced by using enucleated M II oocytes and enhanced green fluorescence protein (EGFP) gene-transfected or non-transfected porcine fetal fibroblasts. One group of NT embryos received a single electrical pulse to induce fusion and activation simultaneously (FAS). The other group was fused 2 hr before activation (FBA) using two kinds of electrical pulses. Electrically activated NT embryos in both groups were treated with cycloheximide (CHX) before culture to assess the development to the blastocyst stage. After 6 days of culture, all morulae and blastocysts derived from EGFP-transfected fibroblasts emitted green fluorescence without mosaicism, and EGFP-gene product was also detected in all morulae and blastocysts examined. NT embryos undergoing FAS showed higher developmental capacity to blastocysts than those undergoing FBA, regardless of the EGFP transfection into the nuclear donor cells. The results also indicated that EGFP-gene transfection into nuclear donor cells has no obvious deleterious effect on the development of NT embryos to blastocysts.  相似文献   

Effect of controlled exercise on middle gluteal muscle fibre composition in Thoroughbred foals     

Eto D  Yamano S  Kasashima Y  Sugiura T  Nasu T  Tokuriki M  Miyata H 《Equine veterinary journal》2003,35(7):676-680

REASONS FOR PERFORMING STUDY: Most racehorses are trained regularly from about age 18 months; therefore, little information is available on the effect of training in Thoroughbred foals. HYPOTHESIS: Well-controlled exercise could improve muscle potential ability for endurance running. METHODS: Thoroughbred foals at age 2 months were separated into control and training (treadmill exercise) groups and samples obtained from the middle gluteal muscle at 2 and 12 months post partum. Muscle fibre compositions were determined by histochemical and electrophoretical techniques and succinic dehydrogenase (SDH) activity was analysed in each fibre type. RESULTS: All fibre types were hypertrophied with growth and type I and IIA fibres were significantly larger in the training than the control group at age 12 months. A significant increase of SDH activity was found in type IIX muscle fibres in the training group. CONCLUSIONS: Training in young Thoroughbred horses can facilitate muscle fibre hypertrophy and increase the oxidative capacity of type IIX fibres, which could potentially enhance stamina at high speeds. POTENTIAL RELEVANCE: To apply this result to practical training, further studies are needed to determine more effective and safe intensities of controlled exercise.  相似文献   

Pathological and serological evidence of Brucella-infection in baleen whales (Mysticeti) in the western North Pacific     

Ohishi K  Zenitani R  Bando T  Goto Y  Uchida K  Maruyama T  Yamamoto S  Miyazaki N  Fujise Y 《Comparative immunology, microbiology and infectious diseases》2003,26(2):125-136

Abnormal testes and uterus were observed in 13 males (33%) and one female (3%) out of 40 common minke whales (Balaenoptera acutorostrata) in the western North Pacific. Similar lesions were found in testis and ovary, respectively, in one male (2%) and female (2%) out of 43 Bryde's whales (Balaenoptera edeni) in the western North Pacific. Grossly, granular lesions with caseation and calcification were main pathological signs, and they were restricted to reproductive organs of mature whales. Chronic purulent or granulomatous orchitis was observed by microscopic analysis. Antibodies to Brucella species were detected in the serum samples of 15/40 (38%) of common minke whales and 4/43 (9%) of Bryde's whales. Neither pathological nor serological change was found in the examined sperm whales (Physeter macrocephalus) in the western North Pacific and Antarctic minke whales (Balaenoptera bonaerensis). These results strongly suggest that Brucella infection was involved in two species of baleen whales (Mysticeti) in the North Pacific.  相似文献   

Survival of Japanese whiting Sillago japonica and by-catch species captured by a sweeping trammel net     

Ari Purbayanto  Atsuhiro Tsunoda  Seiji Akiyama  Takafumi Arimoto  Tadashi Tokai 《Fisheries Science》2001,67(1):21-29

SUMMARY: The survival of Japanese whiting Sillago japonica and by-catch species captured by a sweeping trammel net was examined to assess the effects of differing species, captured conditions, and body lengths on survival, in Tateyama Bay, Chiba Prefecture, Japan. All the live samples were kept in laboratory tanks for 4 days of successive survival observation. The survival ratio of the Japanese whiting varied by the captured conditions. The fish captured by pocketed condition was 27% surviving at the fourth day, which was significantly higher than the gilled and entangled fish. Most of the by-catch species survived for 4 days. About 60% of dead Japanese whiting were observed to have scar injury and damage on the body surface. For the by-catch species, the body damage occurred only in stripedfin goatfish Upeneus bensasi , Temminck's surfperch Ditrema temmincki , and tidepool gunnel Pholis nebulosa . Therefore, it suggests that the conservation measure through catch-and-release may be an appropriate method for most by-catch species, but not for the Japanese whiting.  相似文献