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1. Wu M, Yuan S, Szporn AH, Gan L, Shtilbans V, Burstein DE: Immunocytochemical detection of XIAP in body cavity effusions and washes. Mod Pathol; 2005 Dec;18(12):1618-22
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  • [Source] The source of this record is MEDLINE®, a database of the U.S. National Library of Medicine.
  • We surveyed effusions and washes for expression of X-linked inhibitor of apoptosis (XIAP), a potent constituent of the inhibitor of apoptosis (IAP) family of proteins.
  • We performed an immunocytochemical survey of XIAP expression in cell blocks from benign and malignant body cavity effusions and washes.
  • In all, 116 alcohol-fixed, formalin postfixed paraffin-embedded cell block specimens from 82 pleural effusions, 22 ascites, 11 pelvic/peritoneal washes and one pericardial effusion were evaluated immunocytochemically with monoclonal anti-XIAP (#610763, BD Biosciences, San Jose, USA) 1:250, 4 degrees C x 72 h, and developed using EnVision-Plus reagents (Dako) and diaminobenzidine as chromagen.
  • The prevalence of staining for specific malignancies varied with the tissue of origin as follows: ovarian (13/13, 100%); lung (9/11, 82%), breast (6/13, 46%); gastric (4/7, 57%), colon (0/4, 0%), pancreas (2/3, 67%), gallbladder (1/1, 100%), fallopian tube (1/3, 33%), endometrial (6/7, 86%), mesothelioma (4/5, 80%), carcinoma of unknown primary (5/5, 100%) and hematopoietic malignancies (3/9, 33%).
  • Benign effusions (n = 35) were virtually XIAP-negative except for two cases (6%) in which histiocytes showed moderate staining.
  • XIAP immunostaining, when strong, allows for ready distinction of malignant from benign and reactive cell populations.
  • The degree of XIAP staining of tumor cells may be a means of identifying the most therapy-resistant cases (ie, those with strong XIAP expression), and allow additional triaging to XIAP-blocking drugs presently being developed and clinically tested.
  • [MeSH-major] Ascitic Fluid / chemistry. Biomarkers, Tumor / analysis. Immunoenzyme Techniques / methods. Peritoneal Lavage. Pleural Effusion, Malignant / chemistry. X-Linked Inhibitor of Apoptosis Protein / analysis

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  • (PMID = 16118627.001).
  • [ISSN] 0893-3952
  • [Journal-full-title] Modern pathology : an official journal of the United States and Canadian Academy of Pathology, Inc
  • [ISO-abbreviation] Mod. Pathol.
  • [Language] eng
  • [Publication-type] Journal Article; Research Support, Non-U.S. Gov't
  • [Publication-country] United States
  • [Chemical-registry-number] 0 / Biomarkers, Tumor; 0 / X-Linked Inhibitor of Apoptosis Protein
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