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Related Concept Videos

Disorders of the Male Reproductive System01:20

Disorders of the Male Reproductive System

Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra. Symptoms...
Testosterone: Functions and Regulation01:26

Testosterone: Functions and Regulation

The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
Infertility in Males01:23

Infertility in Males

Male infertility affects millions of couples worldwide, arising from various factors that impact different stages of the reproductive process. An endocrine imbalance resulting from conditions like hypogonadism, Klinefelter syndrome, or pituitary disorders can disrupt hormone levels and reduce sperm production. Testicular defects, such as tumors, cryptorchidism, atrophic testes, abnormal sperm morphology, and low sperm count or motility, may arise due to genetic factors, structural...
Menopause01:28

Menopause

Menopause, a natural biological process marking the end of a woman's fertility, typically occurs between the fifth and sixth decade of life. This phase is characterized by the exhaustion of the ovarian follicle pool, leading to less responsive ovaries despite the high levels of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH). The consequential decrease in estrogen production results in symptoms like hot flashes, heavy sweating, headaches, hair loss, muscle pains, vaginal...
Male Sexual Response: Erection & Ejaculation01:17

Male Sexual Response: Erection & Ejaculation

Sexual stimulation can take various forms, such as physical touch and visual or auditory cues. When this happens, the parasympathetic reflex in the sacral portion of the spinal cord is activated. This reflex stimulates the release of nitric oxide (NO), which then dilates the arterioles in the penis, increasing blood flow to the erectile tissues - the corpora cavernosa and corpus spongiosum.
The blood filling the erectile tissues compresses the veins, which helps to prevent blood from leaving...
Trichomoniasis01:18

Trichomoniasis

Trichomonas vaginalis is a flagellated protozoan parasite and the causative agent of trichomoniasis, one of the most prevalent non-viral sexually transmitted infections in the United States. This extracellular parasite primarily colonizes the lower genitourinary tract in women—particularly the vagina—and in men, the urethra and prostate. Its structural and functional adaptations enable its survival, motility, and pathogenicity within the host environment.Structural Features and Host EntryT.

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Related Experiment Video

Updated: Jun 28, 2026

Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility
04:22

Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility

Published on: May 30, 2025

Erectile dysfunction and testosterone deficiency.

M Blute1, P Hakimian, J Kashanian

  • 1Division of Urology, Maimonides Medical Center, Brooklyn, N.Y., USA.

Frontiers of Hormone Research
|November 18, 2008
PubMed
Summary
This summary is machine-generated.

Testosterone plays a crucial role in erectile function. Testosterone replacement therapy can significantly improve erectile dysfunction, especially in men with low testosterone levels.

Related Experiment Videos

Last Updated: Jun 28, 2026

Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility
04:22

Treatment Model for Young Patients with Psychogenic Erectile Dysfunction and Resultant Infertility

Published on: May 30, 2025

Area of Science:

  • Endocrinology
  • Urology
  • Cardiovascular Health

Background:

  • The role of testosterone in erectile function has been debated, but emerging evidence highlights its significance.
  • Testosterone deficiency is linked to diminished erectile function and worsening erectile dysfunction severity.
  • Erectile dysfunction can be an early indicator of underlying cardiovascular disease.

Purpose of the Study:

  • To review the current evidence on the role of testosterone in erectile function.
  • To examine the impact of testosterone deficiency and replacement on erectile function.
  • To emphasize the importance of assessing testosterone levels in men with erectile dysfunction.

Main Methods:

  • Review of recent scientific literature and animal studies.
  • Analysis of the correlation between testosterone levels and erectile dysfunction severity.
  • Evaluation of the effects of testosterone replacement therapy on erectile function.

Main Results:

  • Testosterone deficiency is associated with impaired erectile function and structural changes in penile tissues.
  • Testosterone enhances the expression of key enzymes like nitric oxide synthase and phosphodiesterase type 5.
  • Testosterone replacement therapy can restore erectile function in hypogonadal men and improve response to PDE5 inhibitors.

Conclusions:

  • Testosterone is essential for maintaining erectile function.
  • Assessing testosterone levels is recommended for all men presenting with erectile dysfunction.
  • Testosterone replacement therapy is an effective treatment option for specific patient groups.