Altered cellular response to UV irradiation in a patient affected by premature ageing.
An abnormal response to UV-irradiation was found in a patient affected by precocious senescence. A decreased level of unscheduled DNA synthesis (UDS) was present in 60% of Go lymphocytes and in fibroblasts after the fifth culture passage. Hypersensitivity of lymphocytes to UV-light was indicated also by a decreased rate of DNA synthesis after mitogen stimulation. The results of this study indicate that the defect which determines the premature ageing influences the capacity to repair UV-induced DNA damage.
17 references, click to expand
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