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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...
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...
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...
Apoptosis01:30

Apoptosis

Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size reduction of the tissue.
Cellular Injury V: Apoptosis and Autophagy01:22

Cellular Injury V: Apoptosis and Autophagy

Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...
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...

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Related Experiment Video

Updated: Jun 26, 2026

Isolation of Adipose Derived Regenerative Cells for the Treatment of Erectile Dysfunction Following Radical Prostatectomy
09:49

Isolation of Adipose Derived Regenerative Cells for the Treatment of Erectile Dysfunction Following Radical Prostatectomy

Published on: December 28, 2021

[Cell apoptosis and male erectile dysfunction].

Ke Rao1, Ji-Hong Liu

  • 1Department of Urology, Tongji Hospital, Tongji Medical College, Huaczhong University of Science and Technology, Weuhan, Hubei 430030, China. raokeke@hotmail.com

Zhonghua Nan Ke Xue = National Journal of Andrology
|January 23, 2009
PubMed
Summary

Excessive apoptosis, or programmed cell death, in erectile tissues is a key mechanism contributing to erectile dysfunction (ED). Understanding this process and its links to risk factors like diabetes is crucial for developing new treatments.

Related Experiment Videos

Last Updated: Jun 26, 2026

Isolation of Adipose Derived Regenerative Cells for the Treatment of Erectile Dysfunction Following Radical Prostatectomy
09:49

Isolation of Adipose Derived Regenerative Cells for the Treatment of Erectile Dysfunction Following Radical Prostatectomy

Published on: December 28, 2021

Area of Science:

  • Urology
  • Cell Biology
  • Pathophysiology

Context:

  • Erectile dysfunction (ED) is a prevalent condition, particularly in aging men.
  • The underlying mechanisms of ED require further investigation.
  • Excessive apoptosis of erectile tissues is increasingly recognized as a significant factor in ED development.

Purpose:

  • To review the fundamental mechanisms of cellular apoptosis.
  • To elucidate the specific role of apoptosis in the pathophysiology of erectile dysfunction.
  • To explore the connections between apoptosis and major ED risk factors.

Summary:

  • Cellular apoptosis, a regulated cell death process, is examined in the context of erectile tissue.
  • The review details how increased apoptosis in the penis contributes to the onset and progression of ED.
  • Key risk factors for ED, including diabetes mellitus, hyperlipidemia, cavernous nerve injury, and aging, are linked to apoptotic pathways.

Impact:

  • Provides a comprehensive overview of apoptosis as a critical mechanism in ED.
  • Highlights the etiological relationship between common health conditions and erectile tissue damage.
  • Offers insights for future research into therapeutic strategies targeting apoptotic pathways to treat ED.