Effects of muscle types and cooling on discoloration of canned skipjack     

Yeun Suk Gu  Hyoung Sik Yoon  Douck Choun Park  Cheong Il Ji  Tae Yong Cho  Myung Chan Kim  Sung Jae You  Saeng Gyu Yeo  Seon Bong Kim 《Fisheries Science》2001,67(6):1145-1150

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兽药使用环节存在的问题及对策     

陈奕春  陈银伟  占伟慧  应振火 《中国兽药杂志》2005,39(10):47-47

经过对兽药生产厂家和经营企业几年的整治,尤其是新<兽药管理条例>和<兽药标签和说明书管理办法>出台后,又经过GMP认证,兽药生产经营市场秩序和经营行为得到了一定的规范.但兽药使用环节中却存在诸多的问题,如:违法使用人用药品;违法使用禁用兽药;不执行休药期规定;未建立台帐等等.这些问题的存在,直接导致了动物产品的安全性问题.对此,笔者分析了兽药使用环节存在问题的原因,并对解决这些问题提出了个人观点.  相似文献   

Effect of ultrasound on the growth of probiotics and bioconversion of isoflavones in prebiotic-supplemented soymilk     

Yeo SK  Liong MT 《Journal of agricultural and food chemistry》2011,59(3):885-897

The objective of the present study was to evaluate the effects of ultrasound on the growth of probiotics and bioconversion of isoflavones in prebiotic-soymilk. Previous studies have shown that ultrasound elevated microbial enzymatic activity and growth by altering cellular membranes. The growth of probiotics was significantly decreased (P < 0.05) immediately after ultrasound treatment, attributed to membrane permeabilization, cell lysis, and membrane lipid peroxidation upon ultrasound treatment. The ultrasound treatment also caused alteration at the acyl chain, polar head, and interface region of the probiotic membrane phospholipid bilayers. The cells treated with ultrasound showed recovery from injury with subsequent increase in growth upon fermentation in soymilk (P < 0.05). Ultrasound treatment at 100 W for 2 and 3 min also enhanced (P < 0.05) the intracellular and extracellular β-glucosidase activity of probiotics, leading to increased (P < 0.05) bioconversion of glucosides to aglycones in the prebiotic-soymilk. Our present study illustrated that ultrasound treatment could produce bioactive synbiotic-soymilk with increased concentrations of bioactive aglycones.  相似文献   

Antibody response of five bird species after vaccination with a killed West Nile virus vaccine.     

Danelle M Okeson  Shirley Yeo Llizo  Christine L Miller  Amy L Glaser 《Journal of zoo and wildlife medicine》2007,38(2):240-244

West Nile virus has been associated with numerous bird mortalities in the United States since 1999. Five avian species at three zoological parks were selected to assess the antibody response to vaccination for West Nile virus: black-footed penguins (Spheniscus demersus), little blue penguins (Eudyptula minor), American flamingos (Phoenicopterus ruber), Chilean flamingos (Phoenicopterus chilensis), and Attwater's prairie chickens (Tympanuchus cupido attwateri). All birds were vaccinated intramuscularly at least twice with a commercially available inactivated whole virus vaccine (Innovator). Significant differences in antibody titer over time were detected for black-footed penguins and both flamingo species.  相似文献   

正交试验法优化普抗合剂制备工艺     

张媛  杜洪建  盛柳青  包卫华 《中国兽药杂志》2007,41(12):36-37

以干浸膏得率和黄芩苷提取率为考核指标,采用正交试验法对普抗合剂水提取醇沉淀制备工艺进行考察.普抗合剂最佳制备工艺方案为加水量10倍,提取2次,每次1 h,55%的乙醇沉淀杂质 .该工艺科学合理,适合于大规模工业生产.  相似文献   

Cell proliferation and neuroblast differentiation in the dentate gyrus of high-fat diet-fed mice are increased after rosiglitazone treatment     

Dae Young Yoo  Woosuk Kim  Dae Won Kim  Sung Min Nam  Hyo Young Jung  Jong Whi Kim  Choong Hyun Lee  Jung Hoon Choi  Moo-Ho Won  Yeo Sung Yoon  In Koo Hwang 《Journal of veterinary science (Suw?n-si, Korea)》2014,15(1):27-33

In this study, we determined how rosiglitazone (RSG) differentially affected hippocampal neurogenesis in mice fed a low-fat diet (LFD) or high-fat diet (HFD; 60% fat). LFD and HFD were given to the mice for 8 weeks. Four weeks after initiating the LFD and HFD feeding, vehicle or RSG was administered orally once a day to both groups of mice. We measured cell proliferation and neuroblast differentiation in the subgranular zone of the dentate gyrus using Ki67 and doublecortin (DCX), respectively, as markers. In addition, we monitored the effects of RSG on the levels of DCX and brain-derived neurotrophic factor (BDNF) in hippocampal homogenates. At 8 weeks after the LFD feeding, the numbers of Ki67- and DCX-positive cells as well as hippocampal levels of DCX and BDNF were significantly decreased in the RSG-treated group compared to the vehicle-treated animals. In contrast, the numbers of Ki67- and DCX-positive cells along with hippocampal levels of DCX and BDNF in the HFD fed mice were significantly increased in the RSG-treated mice compared to the vehicle-treated group. Our data demonstrate that RSG can modulate the levels of BDNF, which could play a pivotal role in cell proliferation and neuroblast differentiation in the hippocampal dentate gyrus.  相似文献   

Maturation of cellular defence in the respiratory tract of young calves     

S.P. Yeo  C.R. Stokes  F.G.R. Taylor  F.J. Bourne   《Research in veterinary science》1993,55(3):145

The maturation of respiratory tract defence was investigated in a longitudinal study of calves during the first 100 days of life. From day 7, the proportions of the cell types identified in bronchoalveolar lavage (BAL) fluid were similar to those found in adults, with a predominance of alveolar macrophages over polymorphonuclear neutrophils (PMNs) and lymphocytes. Functionally, bactericidal activity of BAL cells was defective and for the first 21 days they supported intracellular bacterial growth. At 24 hours of life, the movement of peripheral blood neutrophils to a chemotactic source was poor, but this increased rapidly during the first week of life. Like BAL cells, peripheral blood PMNs supported intracellular bacterial growth for the first two weeks of life. These studies suggest that cellular defence mechanisms may be compromised during the first week of life.  相似文献   

Changes in orexin-A and neuropeptide y expression in the hypothalamus of obese and lean Zucker Diabetic Fatty rats     

Park ES  Seong JK  Yi SJ  Kim JS  Lee HS  Lee IS  Yoon YS 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2005,67(7):639-646

This study was carried out to investigate the changes of orexin-A (OXA) and neuropeptide Y (NPY) expression in the hypothalamus of the obese and lean Zucker Diabetic Fatty (ZDF) rats which have a missense mutation in the leptin receptor gene. The mean body weights (MBW) between the obese and lean ZDF rats were significantly different at 28 and 70 postnatal days. However, at 14 postnatal day, there was no significant difference in the MBW between the obese and lean ZDF rats in both male and female. The OXA immunoreactivities were not significantly different between the obese and lean ZDF rats in both sexes at 14, 28, and 70 postnatal days, respectively. The NPY immunoreactivity was higher in the obese than in the lean ZDF rats in both male and female at 28 and 70 postnatal days, whereas there was no significant difference between the obese and lean ZDF rats at 14 postnatal day. These results indicate that both OXA and NPY might halt their roles for food intake in the obese phenotype of the male and female ZDF rats in the preweaning period of 14 postnatal day, whereas NPY might play a main role in the obesity of these rats in the weaning period of 28 and 70 postnatal days.  相似文献   

Classification of the conductance of moisture through wood cell components     

Yeonjung Han  Jun-Ho Park  Yoon-Seong Chang  Chang-Deuk Eom  Jun-Jae Lee  Hwanmyeong Yeo 《Journal of Wood Science》2013,59(6):469-476

This study aimed to clarify the conductance of moisture through wood cell components. Moisture diffusion coefficients were determined from three models (Stamm, Siau, and Kang et al.) and cell wall, pit, and ray dimensions were experimentally observed in a wood specimen. Fractions of moisture diffusing along each path in each of the models were analyzed. As moisture content decreased, the fraction of water diffusing as bound water through cell walls in tangential and longitudinal directions decreased while water vapor diffusion through lumens and pits became more dominant. Diffusion coefficients predicted by each model were compared with experimental values. Although predicted values differed from experimental values, predicted trends for diffusion rate dependence on moisture content were similar to the experimental results. In particular, the models of Stamm and Kang et al., which consider moisture transport through rays and pits, show a very consistent trend for transverse diffusion, which is always faster radially than tangentially. Input of more accurate dimensions of cell walls and cavities into the models should result in more reliable values, closer to the experimentally determined diffusion coefficients.  相似文献   

Equine herpesvirus type 1 infection induces procoagulant activity in equine monocytes     

Wee Ming Yeo  Nikolaus Osterrieder  Tracy Stokol 《Veterinary research》2013,44(1):16

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