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Related Concept Videos

Disorders of the Male Reproductive System01:20

Disorders of the Male Reproductive System

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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.
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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.
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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...
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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...
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Menopause

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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...
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Isolation of Adipose Derived Regenerative Cells for the Treatment of Erectile Dysfunction Following Radical Prostatectomy
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Testosterone replacement in men with sexual dysfunction.

Hunju Lee1, Eu Chang Hwang2,3, Cheol Kyu Oh4

  • 1Department of Preventive Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea, South.

The Cochrane Database of Systematic Reviews
|January 15, 2024
PubMed
Summary
This summary is machine-generated.

Testosterone replacement therapy (TRT) likely offers little to no short-term benefit for erectile dysfunction or sexual quality of life in men without testosterone deficiency. Long-term effects remain uncertain, with limited data on cardiovascular outcomes.

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Area of Science:

  • Endocrinology
  • Urology
  • Clinical Pharmacology

Background:

  • Clinical guidelines recommend testosterone replacement therapy (TRT) for men with sexual dysfunction and testosterone deficiency.
  • However, TRT is often promoted for men without diagnosed testosterone deficiency, necessitating a review of its efficacy and safety in this population.
  • Existing trials frequently lack clear reporting on participants' testosterone levels and symptomology.

Approach:

  • A comprehensive literature search was conducted across major databases (CENTRAL, MEDLINE, EMBASE) and clinical trial registries up to August 2023.
  • Included were randomized controlled trials (RCTs) of men aged 40+ with sexual dysfunction, excluding those with primary or secondary hypogonadism.
  • Data were analyzed using a random-effects model, focusing on erectile function, sexual quality of life, and cardiovascular mortality, distinguishing between short-term and long-term outcomes.

Key Points:

  • Short-term (up to 12 months) TRT likely results in little to no difference in erectile function (MD 2.37, 95% CI 1.67 to 3.08) or sexual quality of life (MD -2.31, 95% CI -3.63 to -1.00) compared to placebo.
  • TRT also likely shows little to no difference in cardiovascular mortality (RR 0.83, 95% CI 0.21 to 3.26) and adverse events, including prostate and urinary issues.
  • Long-term data are limited, with very low certainty of evidence regarding TRT's effect on erectile function, and no data available for sexual quality of life or cardiovascular mortality.

Conclusions:

  • Short-term TRT demonstrates minimal to no significant benefit for erectile function, sexual quality of life, or cardiovascular mortality in men presenting with sexual dysfunction but without confirmed testosterone deficiency.
  • The evidence for long-term effects is highly uncertain, underscoring the need for cautious application of TRT.
  • These findings are crucial for informing clinical guidelines and decision-making regarding TRT for sexual dysfunction.