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The effects of Germanium biotite on the adsorptive and inhibition of growth abilities against E. coli and Salmonella spp. in vitro
2012
Jung, M.H., Seoul National University, Seoul, Republic of Korea | Cha, S.B., Seoul National University, Seoul, Republic of Korea | Shin, S.W., Seoul National University, Seoul, Republic of Korea | Lee, W.J., Seoul National University, Seoul, Republic of Korea | Shin, M.K., Seoul National University, Seoul, Republic of Korea | Yoo, A.N., Seoul National University, Seoul, Republic of Korea | Yoo, H.S., Seoul National University, Seoul, Republic of Korea
Germanium biotite, a natural mineral, has been used as a feed supplement to reinforce innate immune ability. The aim of the present study was to evaluate the effects of germanium biotite on the adsorptive and inhibition of growth abilities against Escherichia (E.) coli and Salmonella spp. in vitro. Two strains of enterotoxigenic E. coli and four strains of two Salmonella serotypes (Salmonella Derby and Salmonella Typhimurium), major bacterial diarrheal pathogens, were used for this experiment. The absorptive ability of germanium biotite against most Salmonella used in present experiment was observed weakly. The germanium biotite, however, showed significant effect of bacterial growth inhibition in most experiment bacteria. These results suggest that the use of the germanium biotite as feed supplement could alleviate diarrhea following inhibition of bacteria growth. It is also presumed that antibiotics usage for farm animals, considered as causes of antibiotic residue in meat and emerging antibiotic resistance, could be reduced through the use of germanium biotite as a feed supplement, in place of antibiotics used for the prevention of diarrhea.
显示更多 [+] 显示较少 [-]Immunohistochemical study onthe expression of bcl-2 protein during follicular development and atresia in the rat ovary
1999
Koh, P.O. | Kwak, S.D. (Gyeongsang National University, Chinju (Korea Public). Institute of Animal Medicine, College of Veterinary Medicine) | Jeong, S.Y. | Cho, G.J. | Choi, W.S. (Gyeongsang National University, Chinju (Korea Public). Department of Anatomy, College of Medicine)
In the mannalian ovary, follicular development and stresia continuously occur during the reproductive cycles. Follicular atresia occurs through granulosa cell apoptosis. Apoptosis is known as the physiological cell death, which is regulated by bcl-2 gene family. In the vcl-2 gene family, bcl-2 and bcl-xLong are known as inhibitors of apoptosis, whereas bax and bcl-xShort are known as inducer of apoptosis. We thought that bcl-2 protein is associated with follicular development and atresia. But it is not known that the distribution of cells containing bcl-2 protein during follicular development and atresia. Therefore, to examine the distribution of cells with bcl-2 protein during ovarian follicular development and atresia. Therefore, to examine the distribution of cells with bcl-2 protein during ovarian follicular development and atresia, the immunohistochemistry was used ih the rat ovary. Bcl-2 immunorectivity was localized in the intestitial cells, theca externa cells and granulosa cells around of antrum. All positive sighals were observed in the cytoplasm of these cells. Positive sighals were strongly observed in the interstitial and theca externa cells of growing antral follicles. While, positive signals were weakly observed in these cells from atretic antral follicles. Positive sighals were very weakly observed in the granulosa cells of growing and atreticantral follicles. According to these data, we suggested that bcl-2 proteins which were wtrongly expressed in the interstitial cells and theca externa cells of growing antral folicles inhibit follicular atresia. And wer purposed that bcl-2 proteins regulated follicular development and atresia through the action of acl-2 gene family.
显示更多 [+] 显示较少 [-]A study on efficacy and safety of bio-gammamix by oral administration to cultured fish
1994
Heo, G.J. (Chungbuk National University, Cheongju (Korea Republic). College of Veterinary Medicine) | Kim, B.G. | Yeh, J.G. | Kim, J.H. (Bayer Vetchem, Ltd., Anyang (Korea Republic). Bayer Veterinary Medical Research Institute)
Fetal growth retardation induced by maternal exposure to phenol in the rat
1994
Chung, M.K. (Korea Research Institute of Chemical Technology, Taejon (Korea Republic). Toxicology Research Center)
The effects of exogenous insulin-like growth factor-I on broiler chicken growth
1994
Lee, H.I. | Kang, C.W. | Chon, S.K. (Chonbuk National University, Chonju (Korea Republic). College of Veterinary Medicine) | Lee, M.J. (Iri Agricultural and Technical College, Iri (Korea Republic)) | Lee, D.Y. (Chonbuk National University, Chonju (Korea Republic). Medical School) | Kim, Y.A. (Woosuk University, Wanju (Korea Republic). Faculty of Pharmacy)