(Analysis of the proliferating cell nuclear antigen(PCNA) and Ki-67 as proliferating cell markers) Expressions in colorectal carcinoma at HUSM and its relationship with the duke staging system
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Date
2001
Authors
Kamal, Meor Zamari Meor
Jaafar, Hasnan
Ali, Kholip
J, Rosli
Journal Title
Journal ISSN
Volume Title
Publisher
Kampus Kesihatan, Universiti Sains Malaysia
Abstract
Proliferating cell nuclear antigen (PCNA) and Ki-67 are the two important molecules expressed by the proliferating cells. They are important during the DNA synthesis. We applied the antibodies (using DAKO EPOS system) against these two proteins to a series of 54 cases of colorectal adenocarcinoma of various Dukes' stages in order to observe the degree of expressions and their relationship with Dukes' stage. Our study showed, regardless of the Dukes' stage almost all cases are strongly expressed PCNA. However we failed to demonstrate the expression of Ki-67. We conclude that expression of PCNA is strong in colorectal carcinoma but the degree of expression has no relationship with the Dukes' stage. Expression of Ki-67 is probably best seen if we use fresh tissue rather than formalin fixed paraffin embedded tissue.
Description
Keywords
Colorectal carcinoma , EPOS system , Immunohistochemistry