Comparison of proliferative activity as assessed by proliferating cell nuclear antigen (PCNA) and Ki‐67 monoclonal antibodies in melanocytic skin lesions

Citations Over TimeTop 12% of 1993 papers

Abstract

Immunostaining with the monoclonal antibodies PCNA and Ki-67 provides a simple method for the assessment of growth fractions of tumors. Contrary to Ki-67, PCNA antibody can be applied on aldehyde- or alcohol-fixed and paraffin-embedded tissues, thus allowing studies on archival material. For 77 melanocytic skin lesions, we compared PCNA immunostaining on formalin-fixed tissue with Ki-67 immunostaining on frozen material of the same lesion. 16 benign melanocytic nevi (BMN, from 16 patients), 43 primary malignant melanomas (PMM, 42 patients), and 18 skin metastases of malignant melanoma (MMM, 12 patients) were included in the study. Maximum nuclear density (NDmax) of PCNA- and Ki-67-positive nuclei was assessed using interactive image analysis. NDmax values for both PCNA and Ki-67 differed significantly between the three diagnostic groups (Kruskal-Wallis H-test: p << 0.001). Mean values (given as 1000 nuclei/mm3 tissue) increased considerably from benign to malignant lesions (PCNA: BMN: 23.8 +/- 28.4 [mean +/- standard deviation], PMM: 48.1 +/- 41.0, MMM: 117.0 +/- 64.6; Ki-67: BMN: 6.4 +/- 3.3, PMM 25.0 +/- 31.1, MMM: 95.2 +/- 47.2). Correlation between NDmax values of PCNA- and Ki-67-positive nuclei was significant (Linear regression analysis: r = 0.51, p << 0.001). Furthermore, for PMM a significant correlation between histologic parameters related to prognosis (Breslow index and mitotic rate) and PCNA as well as Ki-67 expression was found (PCNA-Breslow index: r = 0.42, p < 0.01; Ki-67-Breslow index: r = 0.60, p << 0.001; PCNA-mitotic rate: r = 0.40, p < 0.01; Ki-67-mitotic rate: r = 0.50, p < 0.001).(ABSTRACT TRUNCATED AT 250 WORDS)

Related Papers

• → Observational study on the mitotic rate and other prognostic factors in cutaneous primary melanoma arising from naevi and from melanoma de novo(2014)14 cited
• Galectin-3 and proliferating cell nuclear antigen (PCNA) expression in papillary thyroid carcinoma.(2005)
• → Comparison of streptozotocin-induced diabetic and insulin resistant effects on spermatogenesis with proliferating cell nuclear antigen (PCNA) immunostaining of adult rat testis(2012)13 cited
• [A comparison of proliferating cell nuclear antigen immunostaining, nucleolar organizer region staining in lung cancer].(1993)
• Expression of p53 and PCNA in non-small cell lung cancer and its clinical significance(2003)