Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

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Schoppet, M. et al.

Schoppet, Ruppert, Hofbauer, Henser, Al-Fakhri, Christ, Pankuweit, Maisch,

TNF-related apoptosis-inducing ligand and its decoy receptor osteoprotegerin in nonischemic dilated cardiomyopathy.

Apoptosis has been attributed an essential role in dilated cardiomyopathy (DCM) recently. We assessed expression of TNF-related apoptosis-inducing ligand (TRAIL) and its decoy receptor osteoprotegerin (OPG) in men with nonischemic DCM, who underwent coronary angiography and endomyocardial biopsy (EMB) after exclusion of coronary artery disease compared to control patients. TRAIL plasma concentrations were elevated in DCM (p=0.02 vs. controls), and were positively correlated with left ventricular enddiastolic diameter (r=0.15, p=0.04), whereas OPG plasma levels did not differ between both groups (p=0.96). In EMB of DCM patients, TRAIL and OPG protein were detected by immunohistochemistry but not in controls. Furthermore, gene expression in EMB or peripheral blood leukocytes (PBL) of DCM patients assessed by real-time PCR showed an increase of TRAIL mRNA in PBL (p=0.01 vs. controls), whereas OPG mRNA was upregulated in endomyocardial specimens (p<0.001 vs. controls). In conclusion, myocardial overexpression of antiapoptotic OPG in DCM patients may represent a compensatory mechanism to limit systemic activation of TRAIL in patients with congestive heart disease.[1]

References

TNF-related apoptosis-inducing ligand and its decoy receptor osteoprotegerin in nonischemic dilated cardiomyopathy. Schoppet, M., Ruppert, V., Hofbauer, L.C., Henser, S., Al-Fakhri, N., Christ, M., Pankuweit, S., Maisch, B. Biochem. Biophys. Res. Commun. (2005) [Pubmed]

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