Optimal restoration of spermatogenesis after testosterone therapy using human chorionic gonadotropin and follicle-stimulating hormone.

Objective: To study improvements in spermatogenesis in men with a history of testosterone therapy using a novel fertility treatment regimen.

Design: A single-center retrospective cohort analysis.

Setting: Clinic.

Ex vivo human testes as a practical model to simulate ultrasound-guided testicular cell transplantation for human fertility restoration.

Objective: To develop an ex vivo model to practice ultrasound-guided injection of cellular material into human seminiferous tubules to simulate testicular cell transplantation (TCT).

Design: Simulated TCT injections were performed in human testes removed during orchiectomy. The rete testis was the target site of injection.

The future of penile prostheses for the treatment of erectile dysfunction.

Penile prostheses (both inflatable and malleable) are standard care in the management of erectile dysfunction (ED). Introduced over 45 years ago, modern penile implants have evolved greatly during that period of time and now represent the cutting edge in materials science and function. Despite the introduction of highly effective oral pharmacotherapy for ED, these devices have remained relevant and will almost certainly remain so for the foreseeable future.

Analysis of early thrombus dynamics in a humanized mouse laser injury model.

Platelet aggregation and thrombus formation at the site of injury is a dynamic process that involves the continuous addition of new platelets as well as thrombus rupture. In the early stages of hemostasis (within minutes after vessel injury) this process can be visualized by transfusing fluorescently labeled human platelets and observing their deposition and detachment. These two counterbalancing events help the developing thrombus reach a steady-state morphology, where it is large enough to cover the injured vessel surface but not too large to form a severe thrombotic occlusion.