Serum Biomarkers of Erectile Dysfunction in Diabetes Mellitus: A Systematic Review of Current Literature

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Abstract
Erectile dysfunction (ED) is a common complication in patients with diabetes mellitus (DM). However, the utility of serum biomarkers as clinical surrogates for the development and/or progression of ED is unknown. To summarize the current literature for serum biomarkers for ED in DM and emphasize areas for future research. Human subject data demonstrating the utility of serum markers for the development and progression of ED in patients with DM. We performed a systematic PubMed-Medline search in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement using Medical Subject Headings (MeSH) for articles published from January 1, 2000 through December 31, 2016 of serum biomarkers for development or progression of ED in patients with DM using erectile dysfunction [MeSH] AND (biomarkers [MeSH] or inflammation mediators [MeSH] or intercellular signaling peptides and proteins [MeSH] or cell adhesion molecules [MeSH]). A thorough review of these studies was completed. Of the 327 abstracts screened, 12 full-text studies were assessed and 1 study was excluded. Eleven studies assessing serum biomarkers for ED in patients with DM were included in this review. The most studied serum biomarkers for ED in men with DM included endothelial dysfunction markers such as serum E-selectin, endothelial progenitor cells, and endothelial microparticles and specific markers of inflammation such as interleukin-10, ratio of tumor necrosis factor-α to interleukin-10, and reactive oxygen species such as nitric oxide and malondialdehyde. Reliable serum biomarkers will enable earlier diagnosis and objective monitoring of disease progression and responses to treatment in patients with ED. Serum biomarkers for ED in men with DM are very limited. Future longitudinal studies with uniform patient characteristics are needed to evaluate the potential clinical use of serum biomarkers in men with DM for the development and progression of ED. Patel DP, Craig JR, Myers JB, et al. Serum Biomarkers of Erectile Dysfunction in Diabetes Mellitus: A Systematic Review of Current Literature. Sex Med Rev 2017:5:339-348.

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