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"Nucleolus" 2 results
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PURPOSE: To evaluate the value of cellular DNA content and proliferative activity in an attempt to distinguish between benign and malignant or to estimate malignant potential of conjunetival and uveal pigmental tumors. METHODS :Cellular DNA content ,proliferative index(PI) and s-phase fraction(SPF)from uveal malignant melanomas (UMM),conjunctival nevi (CN) and malignant melanomas (CMM) were measured by flow cytometry(FCM). RESULTS:Seven cases of CN were diploid,aneuploid incidence of 7 cases of CMM and 39 cases of UMM was 57.14% and 74.36% respectively. SPF and PI in CMM were significantly higher than SPF (Plt;0.05) and PI(Plt;0.01)in CN;DNA index (DI) and aneuploid incidence in UMM were related to different pathological category (Plt;0.01). In 19 cases of UMM,there was a significantly positive correlation between DI and argyrophilic nucleolar organizer regions (AgNORs) asssociated proteins areas (Plt;0.01).
CONCLUSIONS: It is suggested that aneuploid might be a characteristic feature of CMM and UMM ;SPF and PI might be used as adjunctive indexes in distinguishing between benign and malignant conjunctival melanomas :DI and silver-stained areas replenish each other to provide tumor biological information in different aspects.
（Chin J Ocul Fundus Dis,1996,12: 94- 97）
Release date：2016-09-02 06:21
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Silver staining technique and computer-assisted image analysis system were used in this study to detect,compare and analyse the nuclear organizer regions(NORs)in human normal retina and retinoblastoma(including differentiated and non-differentiated).The results showed that the mean number of AgNOR per nucleus,the average silver staining area per nucleus and retino of silver staining area to nuclear area in non-differentiated retinoblastoma were much higher than that in differentiated retinoblastoma and normal retina.This might suggest that AgNORs technique and computer-assisted image analysis system have important role in the typing,grading and expectation of progression of retinoblastoma.
（Chin J Ocul Fundus Dis,1993,9:202-204）
Release date：2016-09-02 06:35
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