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김치 추출물에 의한 Aflatoxin B_1의 돌연변이 억제 효과
황승영,허영미,최영현,이숙희,박건영,이원호 부산대학교 유전공학연구소 1997 분자생물학 연구보 Vol.13 No.-
The inhibitory effects of Kimchi extracts on the mutagenicity induced by aflatoxin B₁(AFB₁) in Salmonella and Drosophila assay systems were studied. The kimchi extracts had inhibitory activity for His^+ to His^+ reverse-mutations induced by AFB₁acting on S. typhimurium TA98. A similar inhibitory effect was detected in somatic cell mutation assaying system of D. melanogaster. In Drosophila wing hair spot test, mutant clone frequency induced by AFB₁was consideranly inhibited by the kimchi extracts. These facts suggest that kimchi rxtracts can inhibit gene mutation, deletion, mititic chromosomal recombination and suppress the formation of cancer and mutation by DNA damage.
방사선 조사에 의한 흰주 난포의 퇴축과 난포세포의 방사선 감수성
김수일,한승로,조근자,허대영,이영호,조문준,김무강,김원식 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.1
The aim of this study were to investigate radiation-induced atresia and radiation susceptibility in the rat ovary morphologically. Female rats (Sprague Dawley strain) of 4 weeks old were irradiated with dose of 4 Gy and 8 Gy, and sacrificed at hour 6, 12, and 24 after radiation. The H & E stain, the TUNEL method (ApopTag kit) and transmission electron microscopy (TEM) were used. In light microscopic observation, the number of atresia of ovarian follicles were increased significantly at 6h after irradiation (p<0.01). There was no significant difference between 4 Gy and 8 Gy irradiated groups. In TEM observation, granulosa cells in radio-sensitive follicles were characterized by several structural features including condensation of nuclear chromatin granules, nuclear fragmentation and apoptotic body formation. An apoptotic cell is observed to have been phagocytosed by a normal granulosa cell. Granulosa cells in radio-resistant follicles were characterized by several structural features including nuclear indentation, partial condensation of chromatin granules, mitochondrial swelling, dilatation of RER cisterns, accumulation of dense irregular masses, accumulation of lipid droplets, and increased lysosomal bodies. Number of gap junctions between granulosa cells were decreased, and intercellular space were widen than that of control animals. These findings were prominent at 6h after irradiation and were diminished at 12h and 24h after irradiation. With these results, it was concluded that radiation-induced follicular cell apoptosis and ovarian follicular atresia in rat ovary increased considerably at 6h after irradiation. Further studies are needed to reveal the more extensive differences between radiosensitive and radioresistant follicular granulosa cells.
김용민,원중희,최의성,서중배,이호승,허윤무 충북대학교 의학연구소 2001 忠北醫大學術誌 Vol.11 No.2
연구목적: 만성 요통 환자의 많은 수가 직업 등 주변 환경과 심리 상태의 영향을 받는 것으로 추정되나 그 연관성은 아직 논란이 많다. 본 연구에서는 설문 조사를 통하여 만성 요통 환자의 심리사회적 특성을 알아보고자 하였다. 대상 및 방법. 1997년 7월부터 1998년 12월까지 6주 이상 지속된 만성 요통으로 본원 정형외과 외래를 내원한 환자들 중 기질적 원인이 불명확한 62명의 환자들에서 직업, 유발요인, 치료 등 요통 관련 요소 설문과 Minnesota Multiphasic Personal Inventory (MMPI)를 실시하였다. 요통 관련 사항에는 통증의 기간, 정도, 통증이 유발 또는 심해지는 자세, 그리고 본인이 생각하는 요통의 원인 등을 포함하였다. MMPI는 전체 평균을 이용한 방법과 two-code 방법을 이용하여 평가하였다. 결과: 만성 요통환자의 직업 상 실내에서 앉아 일하는 직업이 가장 맡았으며 일정한 자세를 오래 유지하며 앉거나 서 있는 경우 증상이 악화되는 것으로 기술되었다. MMPI에서는 건강 염려증, 우울증, 히스테리의 세 척도의 평균이 55이상으로 상승되어 있었다. Two-code 방법에서는 92% (46/50)의 환자에서 위 세 척도 중 적어도 하나 이상 상승되어 있었다. 결론: 만성 요통 환자들에서 일상 생활의 자세와 직업이 요통의 발생 및 악화에 영향이 있을 것으로 보여졌다. MMPI를 통한 심리 인성 검사 상 건강 염려증, 우울증, 히스테리의 성향이 증가되어 있어 요통의 발생과 만성화에 심리적 요소가 영향을 미치는 것으로 보여졌다. 사회경제학적, 정신심리학적 요인이 만성 요통에 미치는 영향의 규명을 위한 다양하고 심도 있는 연구가 필요하다고 생각된다. Purpose : Socioeconomic and psychologic factors seem to affect incidence, severity, and chronicity of low back pain. Purpose of this study is to survey socioeconomic factors and document psychoneurotic traits via MMPI in chronic low back pain patients. Materials and Methods : From July 1997 to December 1998, questionnaire about low back pain-related factors such as duration, severity, posture, occupation etc. and MMPI were given to patients who visited our department for chronic low back pain()6weeks). 62 patients completed, and 50 of them completed MMPI. The answers were analyzed. MMPI scores were evaluated in mean±SD method and two-code method. Results : Sedentary workers were the most common. And symptoms were told to be elicited by long sitting or standing posture(job) . Hs, D, Hy scales of MMPI, which are know as "neurotic triad by two-code method was observed in 92% (46/50) . Conclusion : It seemed that job and posture had Important role in chronic low back pain. And, it seemed that chronic low back pain patients had some psychoneurotic traits especially in hypochondriasis, depression, and hysteria. More investigations to document the influences of socioeconomic and psychoneurotic factors in chronic low back pain seems to be necessary.