Despite the fact that male factors contribute to approximately 50% of all infertility, the mechanisms underlying their origin are unknown. Currently, clinicians rely primarily on semen analyses to predict male reproductive potential and chart treatment success. Even when invasive procedures are performed, the causes of male infertility frequently remain elusive. Recently, the advent of new technologies has spurred the search for novel male infertility biomarkers, and the detection of genes, proteins or metabolites unique to the infertile male holds much promise. The concept that a cost-effective, non-invasive and accurate set of biomarkers can be identified to diagnose male infertility is tantalizing. This review focuses on the various methodologies employed in the discovery of novel biomarkers along with their findings. Specific attention is paid to recent advances in the fields of genetics, proteomics and metabolomics.

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Introduction Peyronie's disease, a localized fibrosis of the tunica albuginea surrounding the penile corpora, results in penile curvature and sexual dysfunction. Surgical management involving grafting to straighten the penis is the treatment of choice in conditions unresponsive to conservative therapy where penile length preservation is important. Aim To determine surgical outcomes and patient satisfaction after dermal, pericardial, and small intestinal submucosal grafting for Peyronie's disease. Main Outcome Measures The International Index of Erectile Function (IIEF), postoperative self-reports, patient satisfaction, and clinical characteristics were used to measure outcomes. Methods We retrospectively reviewed charts of 36 patients who underwent surgery for Peyronie's disease requiring grafting from 1999 to 2005. Follow-up to subjectively assess outcomes was conducted. Results Average patient age at surgery was 55 ± 1 years. Body mass indexes were similar among all groups. Erectile dysfunction risk factors were comparable with 36% reporting hypertension and 22% hypercholesterolemia. Overall patient follow-up time was 673 ± 98 days. Self-reported resolution of penile curvature was noted in 60% of dermal, 100% of Tutoplast, and 76.9% of Stratasis graft recipients. Stratasis patients maintained presurgery length (54%) and rigidity (77%) more so than dermal (30%, 60%) and Tutoplast (23%, 39%) patients. Assessment of erectile dysfunction using the IIEF-5 captured significant improvements in patients receiving Stratasis grafts (preoperative: 10.1 ± 1.1 vs. postoperative: 17 ± 1.6). Overall, 89% of patients reported satisfaction following surgical intervention. Conclusions Surgical management of Peyronie's disease results in correction of penile curvatures and high rates of patient satisfaction. Loss of penile length and decreased rigidity occurred to a lesser degree with Stratasis grafts. While detailed informed consent is essential in this patient population, novel materials such as Tutoplast and Stratasis grafts improve outcomes following surgical correction of Peyronie's disease.

Modern societal pressures and expectations over the past several decades have resulted in the tendency for couples to delay conception. While women experience a notable decrease in oocyte production in their late thirties, the effect of age on spermatogenesis is less well described. While there are no known limits to the age at which men can father children, the effects of advanced paternal age are incompletely understood. This review summarizes the current state of knowledge regarding advanced paternal age and its implications on semen quality, reproductive success and offspring health. This review will serve as a guide to physicians in counseling men about the decision to delay paternity and the risks involved with conception later in life.

Prior anabolic androgenic steroid use is common in young men who seek treatment for symptomatic hypogonadism and anabolic steroid induced hypogonadism is the most common etiology of profound hypogonadism. These findings suggest that it is necessary to refocus the approach to evaluation and treatment paradigms in young hypogonadal men.