Filiz Eren

The Role of ADAMTS1 and Versican in Human Myocardial Infarction: A Postmortem Study

OBJECTIVE To determine the role of a disintegrin and metalloproteinase with thrombospondin type 1 motif (ADAMTS1) and fragmented versican in the myocardial infarction (MI) process in humans and to evaluate the diagnostic efficacy of ADAMTS1 for postmortem diagnosis of MI. METHODS Thirty autopsied individuals were allocated into 2 groups, namely, a study group of individuals who died of myocardial infarction (n = 20), and a control group who died of trauma (n = 10). We performed standard immunohistochemical staining on myocardial tissue specimens, studying anti-ADAMTS1, anti-versican, and anti-versican C terminal peptide sequence (DPEAAE) fragments. RESULTS Strong, diffuse staining was observed throughout myocardial tissue for ADAMTS1 in the 2 groups. However, in the study group, we observed no expression for ADAMTS1 around fibrotic areas but detected slight staining in coagulative and necrotic zones. CONCLUSION Similar localizations of ADAMTS and fragmented versican in human heart tissue indicate that versican presumably is cleaved by ADAMTS1. Hence, ADAMTS1 can be regarded as a new marker for postmortem differential diagnosis of MI.

Ectopic prostate presenting as a mass in bladder.

A 24-year-old man presented with dysuria and voiding frequency. Cystoscopy revealed a smooth surfaced nodular mass in the trigonal region. Transurethral insisional biopsy of the mass was done. Histopathological and immunohistochemical examination revealed benign prostatic tissue situated ectopically.