Premature chromosome condensation in a child with trisomy 21.
نویسندگان
چکیده
منابع مشابه
Biological Dose Assessment by Chemical Induction of Premature Chromosome Condensation
Dose assessment of radiation victims is a key element in medical management of radiation accidents. At high radiation doses (> 6 Gy), dicentric assay lose its efficiency and premature chromosome condensation (PCC) assay was proposed to overcome the restrictions of dicentric assay. It was shown that PCC ring is more suitable and simpler than dicentric for biodosimetry in high radiation doses. In...
متن کاملPetechial rash in a child with autism and Trisomy 21.
Copyright © SLACK Incorporated A10-year-old boy with Trisomy 21 presented to the emergency department with a history of rash on his legs, easy bruising and bleeding, and walking with a limp. One month prior to presentation, he had developed a non-pruritic, non-painful, petechial rash on his lower legs (Figure 1). Eczema was suspected and he was treated with a topical steroid cream, but there wa...
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Extra copies of chromosome 21 are often found in sporadic leukemias. Constitutional trisomy 21 of Down syndrome (DS) is associated with markedly increased risk for childhood leukemia. Thus the oncogenic role of trisomy 21 in the more common sporadic childhood leukemias may be revealed through the investigations of the relatively rare leukemias of DS. Recent studies of the megakaryoblastic leuke...
متن کاملPremature chromosome condensation in human leukemia.
Premature chromosome condensation (PCC) has previously been observed in tissue culture and is believed to arise from asynchronous mitotic activity in multinucleated cells in which the affected nucleus is in interphase and at least one nucleus is in metaphase. Such cells have been noted following fusion induced by virus infection, spontaneously, and after treatment with cytochalasin B. The pheno...
متن کاملConstruction of a dose – response curve by induction of premature chromosome condensation for biological dosimetry
Premature Chromosome Condensation (PCC) appears to have a possible utility for biological dosimetry purposes. The PCC technique may be adapted for cases of suspicion of overexposure where sampling is performed at least one day after an accident. For this purpose, human blood samples were exposed in vitro to 60Co up to 10 Gy and the PCC technique was performed immediately after irradiation. Anal...
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ژورنال
عنوان ژورنال: Journal of Medical Genetics
سال: 1992
ISSN: 1468-6244
DOI: 10.1136/jmg.29.10.750