• Journal of Plant Biology
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• 제37권1호
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• pp.69-76
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• 1994

담배연기 수용성 물질 및 그 추출성분인 니코틴과 카테콜이 식물의 근단세포에 미치는 영향을 구명하기 위하여 양파(allium cepa L.)의 근단에 처리한 결과 식물세포에 유독한 영향을 미쳤으며 농도가 높을수록 염색체 이상은 증가하는 반면 분열지수는 점점 감소하는 경향을 보여주었다. 염색체 이상은 중기에서 polyploid, c-mitosis, stickness, 후기나 말기에 laggard나 bridge, 중간기에 micronucleus나 abnormal nucleus 등이 나타났다. 이러한 성분들을 각각 24시간 처리하였을 때 담배연기 수용액은 29.7%, 니코틴 15.8%, 카테콜 13.0%으로 염색체 이상을 유발시켰다.

• Asian Pacific Journal of Cancer Prevention
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• 제13권8호
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• pp.3825-3827
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• 2012

FISH is one of the most sensitive molecular methods to detect genetic abnormalities with DNA probes. When cytogenetic studies are normal or insufficient, FISH may detect cryptic rearrangements, rare or slowly proliferative abnormal populations in non-mitotic cells. We cytogenetically evaluated 70 childhood ALL - 67.1% were found to have an abnormal karyotype. The 23 patients (32.9%) with a normal karyotype were analyzed by FISH applying two probes; TEL/AML1 and MYB which detect cryptic rearrangements of t(12;21)(p13;q22) and deletion of (6q) respectively, associated with a good prognosis. Out of 23 patients, one was positive for t(12;21)(p13;q22) (4.3%). None of our patients were positive for MYB del(6q). Two patients showed an extra signal for MYB on chromosomes other than 6 (8.6 %) indicating amplification or duplication. Findings were compared with the available literature. Our study clearly indicated the integrated FISH screening method to increase the abnormality detection rate in a narrow range. FISH is less useful for diagnostic study of patients with suspected del(6q) but it helps in detecting known cryptic rearrangements as well as identification of new abnormalities(translocation , duplication and amplification) at the gene level.