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생화학적 마커와 Microsatellite 마커를 이용한 KCR 랫드의 유전모니터링
박한진(Han-Jin Park),이철호(Chul-Ho Lee),차달선(Dal-Seon Cha),조재우(Jae-Woo Cho),조규혁(Kyu-Hyuk Cho),최양규(Yang-Kyu Choi),현병화(Byung-Hwa Hyun),조진원(Jin-Won Cho),한상섭(Sang-Seop Han),송창우(Chang-Woo Song) 한국실험동물학회 2004 Laboratory Animal Research Vol.20 No.2
The cataract mutant rat which showed lens opacity was found in the colony of Sprague-Dawley rat at Korea Research Institute of Chemical Technology (KRICT) in 1996. The mode of inheritance of affected rats was autosomal recessive. These cataractous rats were mated by sister and brother to 27th (F₂₇) generation and named as Korea Cataract Rat (KCR). We performed genetic monitoring of KCR rat using biochemical and microsatellite markers to determine their genetic identified homozygous and distinctive genetic profile. In biochemical monitoring, six rats from each of the F₁₈/F₁₉F₂₀ were tested using 13 biochemical markers. In molecular genetic monitoring, nine rats from the F₂₅ and F₂₆ were tested using 13 microsatellite markers. No differences were found among the genetic profiles of the F₁₈/F₁₉F₂₀ in biochemical monitoring. Also, in the molecular genetic monitoring, we identified that both genetic profiles of F₂₅ and F₂₆ were the same. The genetic profile of KCR rats was unique against the other major rat strains. In addition, the polymorphysm of KCR rat for microsatellite markers was different from the other strains. These results suggest that KCR rat is genetically well qualified as far as in this test and it has been well established as a new inbred strain which has a novel genetic profile and cataract trait.
반추가축영양 : 발효 미역부산물이 반추위 발효특성에 미치는 영향
홍중산 ( Zhong Shan Hong ),이홍구 ( Hong Gu Lee ),이철호 ( Zhe Hu Lee ),김영성 ( Yong Cheng Jin ),이상범 ( Sang Bum Lee ),강한석 ( Han Sck Kang ),최윤재 ( Yun Jaie Choi ) 한국동물자원과학회(구 한국축산학회) 2011 한국축산학회지 Vol.53 No.4
DS-01 균주 접종에 의한 미역부산물 발효산물이 분해 정도, 영양소 변화 및 미생물오염 정도에 관한 관찰과 반추위 발효성상에 미치는 영향을 관찰하여 미역부산물의 저장성 확보와 반추동물의 사료로서의 이용가능성을 발효단계에 따라 조사하였다. DS-01 균주와 함께 배양된 미역부산물은 발효 1개월부터 현저한 분해율을 보이기 시작했다. 미역부산물중의 영양성분 함량은 발효와 함께 커다란 변화를 나타내지 않았으며 모든 처리에서 반추동물에 병원성을 가지는 미생물은 검출되지 않았다. In vitro 실험에서는 발효시간 및 첨가농도에 따른 pH 변화, 암모니아태 질소와 휘발성지방산의 생성에 대한 영향을 조사하였다. pH의 경우 6% FBSW는 1개월 및 2개월 발효조건에서 대조구, 2% 및 4% FBSW 보다 pH 값이 증가한 것을 나타내었다. 암모니아태 질소의 생성에 미치는 영향을 보면 1개월 FBSW 경우 실험 3시간 경과 후가 대조구에 비해 높은 농도를 나타내었지만 시간이 경과에 따라 대조구보다 감소한 경향을 보인다. 2개월 FBSW의 경우 4% 첨가량만 24시간 경과 후 타 처리구에 비해 높은 농도를 나타내었다. 특히, 전 발효기간 동안 6% FBSW 처리구가 발효 3시간과 24시간 경과 후 타 처리구에 비하여 낮게 나타나는 경향을 보였다. 휘발성지방산의 경우 발효 1개월 미역부산물의 4, 6% FBSW 첨가구가 6시간 경과 후 총 VFA의 농도가 현저하게 증가하는 양상을 나타내었고(p<0.05), 발효 2개월 미역부산물의 2, 4% FBSW 첨가구가 9시간 경과 후 총 VFA 농도가 6% FBSW 첨가구에 비해 현저하게 증가하는 양상을 나타냈다(p<0.05). This study was conducted to investigate the effects of brown seaweed waste (BSW) fermented with DS-01 microbe on in vitro rumen microbial fermentation. In in vitro trial, three different diets supplemented with 2%, 4%, 6% BSW fermented with DS-01 either for one month or two months was tested at 3 h, 6 h, 9 h, 12 h, and 24 h incubation. The chemical composition (CP, EE, CF, and ash) between brown seaweed waste (BSW) and fermented BSW (FBSW) were not different. The contamination of pathogenic microbes was not detected in FBSW. The pH value tended to be higher with 6% level of supplementation of FBSW for one month than other treatments. The pH at 24 h was significantly higher in FBSW than that of treatments without FBSW (p<0.05). In FBSW for two months, the pH value in 6% FBSW at 3 h in vitro fermentation tended to be higher than 2% or 4% FBSW treatments (p=0.0540), but there were no differences in other fermentation times. Although the concentration of NH3-N of BSW fermented for one month was higher than control at 3h (p<0.05), the volatile fatty acid values were significantly increased in 4 and 6% FBSW fermented for one month at 6 h incubation (p<0.05). In BSW fermented for two months, the volatile fatty acid values were significantly decreased in 6% treatment at 9h (p<0.05). As a result of in vitro trial, it was recommended that the 2~4% supplementation level of brown seaweed waste fermented with DS-01 microbe for two months could be utilized for in vivo trial in ruminants.
김남수 ( Nam Soo Kim ),허수영 ( Su Young Heo ),최성진 ( Sung Jin Choi ),이철호 ( Cheol Ho Lee ),조정곤 ( Jeong Gon Cho ) 한국조직공학·재생의학회 2009 조직공학과 재생의학 Vol.6 No.4
Currently, absorbable fixation materials such as ceramics, decalcified cortical bone and several synthetic absorbable polymers were used in clinic. But these absorbable materials have some disadvantage such as early absorption, low strength and a few fixation ability. In this study, the effectiveness of internal fixation with bone plate using freeze-drying allograft cortical bone(FACB) investigated in fracture model of the dogs, FACB were known to have same strength as raw bone, and function of delayed absorption and induction of new bone formation. The new bone formations in FACB plate were observed in 10 out of 12 dogs, and started from 5.7 weeks, and unioned to 13 weeks after fixation. Absorption of FACB plates were observed in all cases started from 7 w and continued to 48 w. The bone plate processing with FACB may be apply clinically by useful internal fixation materials to help healing by induction of new bone formation, and to be not requested removal of fixation material by delayed absorption.
김정일,김병권,김정원,채창호,이철호,강동묵,김지홍,김진하,김영욱,이영하,이지호,김정호,윤형렬,유철인,정백근,장태원,김운규,윤동영,강진욱,김종은,안진홍,이동준,장준호,이광영,송혜란,최영희,이용환,조병만,최홍렬,고상백,김은아,이유진,홍영습,정갑열,김정만,김준연 大韓産業醫學會 2004 대한직업환경의학회지 Vol.16 No.1
Objective: Occupational medicine specialists in the Busan, Ulsan and Kyung-Nam areas established an area-based occupational disease surveillance system and used this system to collected case information for the purpose of preventing occupational diseases Methods: l l hospital participated in this system. The authors selected five main diseases, which were hand-arm vibration syndrome (HAVS), work-related musculoskeletal disorder (WRMSD), occupational asthma, occupational skin disease and occupational and occupational lung cancer and established their case definitions. All cases were reported on the web, and real time analysis was conducted. Results: Between April 2001 and April 2003, 192 cases of HAVS, 118 cases of WRMSD, 33 cases of occupational asthma, 17 cases of occupational skin disease and 17 cases of occupational lung cancer (for a total of 377 cases of these five main diseases) were reported. most of the HAVS cases came from shipbuilding, and 172 of them (92.7%) were associated with grinding. Of the four main types of WRMSD, carpal tunnel syndrome (CTS) was the most prevalent with 46 cases and shipbuilding was also the main industry involved (83.9%). The ergonomic risk factors involved mainly associated with the hand. In 19 (57.6%) and 4 (12.1%) cases of occupational asthma, the agents involved. The causative agents of occupational lung cancer included Cr, welding fume, PAH, Ni, etc. 10(58.8%) of the cases were diagnosed as squamous cell carcinoma and 5(29.4%) as adenoma. Conclusion: This result showed that an area-based occupational disease surveillance system might provide an effective method of evaluating the prevalence of such diseases, however the Busan, Ulsan and Kyung-Nam provinces are too large to be treated as individual areas. Therefore, the authors suggest that each province should establish its own surveillance system.