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Evaluation of the tissue microarray technique for immunohistochemical analysis in rectal cancer.

Fernebro, Eva, (författare)
Lunds universitet, Lund University, Medicinska fakulteten, Faculty of Medicine, Institutionen för kliniska vetenskaper, Lund, Department of Clinical Sciences, Lund, Bröstca-genetik, Breastca-genetics, Sektion I, Section I
Dictor, Michael, (författare)
Lunds universitet, Lund University, Medicinska fakulteten, Faculty of Medicine, Institutionen för kliniska vetenskaper, Lund, Department of Clinical Sciences, Lund, Tumörmikromiljö, Tumor microenvironment, Sektion I, Section I
Bendahl, Pär-Ola, (författare)
Lunds universitet, Lund University, Medicinska fakulteten, Faculty of Medicine, Institutionen för kliniska vetenskaper, Lund, Department of Clinical Sciences, Lund, Bröstca-genetik, Breastca-genetics, Sektion I, Section I
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Fernö, Mårten, (författare)
Lunds universitet, Lund University, Medicinska fakulteten, Faculty of Medicine, Institutionen för kliniska vetenskaper, Lund, Department of Clinical Sciences, Lund, Bröstca-genetik, Breastca-genetics, Sektion I, Section I
Nilbert, Mef, (författare)
Lunds universitet, Lund University, Medicinska fakulteten, Faculty of Medicine, Institutionen för kliniska vetenskaper, Lund, Department of Clinical Sciences, Lund, Bröstca-genetik, Breastca-genetics, Sektion I, Section I
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2002
Engelska.
Ingår i: Archives of pathology. - College Amer Pathologists. - 0003-9985. ; 126:6, s. 702-705
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • BACKGROUND: Immunohistochemical staining for tumor-associated proteins is widely used for the identification of novel prognostic markers. Recently, a tissue-conserving, high-throughput technique, tissue microarray, has been introduced. This technique uses 0.6-mm tissue core biopsy specimens, 500 to 1000 of which are brought into a new paraffin array block, which can be sectioned up to 100 times. METHODS: We evaluated the tissue microarray technique for immunohistochemical analysis in 20 rectal cancers. Immunohistochemical staining was performed for the proliferation marker Ki-67 and the tumor suppressor protein p53 in whole tissue sections and in tissue core biopsy specimens. RESULTS: The whole tissue sections were assessed by counting all cells in 10 high-power fields (x40), which resulted in a mean fraction of Ki-67-expressing tumor cells of 0.81 (range, 0.54-1.0). p53 expression assessed in whole tissue sections showed nuclear staining in 15 (75%) of 20 rectal carcinomas. For the tissue microarray technique, a median of 3 (range, 3-5) 0.6-mm tissue core biopsy specimens were studied from each of the 20 tumor specimens. The tissue microarray method gave a mean Ki-67 expression of 0.85 (range, 0.50-1.0) in tumor cell nuclei and showed p53 protein expression in the same 15 of 20 tumors as in the whole tissue sections. CONCLUSION: We conclude that the tissue microarray technique for immunohistochemical staining in rectal cancer yields staining of good quality and expression data for Ki-67 and p53 comparable to those obtained with whole tissue staining. The feasibility of tissue microarray thus enables time- and tissue-preserving studies of multiple markers in large tumor series.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Cancer and Oncology (hsv//eng)

Nyckelord

Rectal Neoplasms : chemistry
Protein p53 : analysis
Middle Age
Male
Ki-67 Antigen : analysis
Immunoenzyme Techniques
Human
Histocytological Preparation Techniques : methods
Female
Cell Count
Carcinoma : pathology
Carcinoma : chemistry
Needle
Biopsy
Adult
Aged
Rectal Neoplasms : pathology
Support
Non-U.S. Gov't
Tumor Markers
Biological : analysis

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Av författaren/redakt...
Fernebro, Eva
Dictor, Michael
Bendahl, Pär-Ola
Fernö, Mårten
Nilbert, Mef
Om ämnet
MEDICIN OCH HÄLSOVETENSKAP
MEDICIN OCH HÄLS ...
och Klinisk medicin
och Cancer och onkol ...
Artiklar i publikationen
Archives of path ...
Av lärosätet
Lunds universitet

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