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Related Concept Videos

Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors01:28

Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors

Phosphodiesterase 5 (PDE5) inhibitors are potent enzymes that function to hydrolyze cyclic nucleotides to their corresponding 5' monophosphates. Their unique biochemical properties have been applied in treating Pulmonary Arterial Hypertension (PAH).
Among the PDE5 inhibitors, sildenafil (Revatio) stands out as a competitive and selective inhibitor. It operates by elevating cellular levels of cGMP and augmenting signaling through the cGMP-PKG pathway, promoting vasodilation. Upon oral...
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists01:18

Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists

Endothelins (ETs) are potent vasoactive peptides critical in the human body's various physiological and pathological processes. One of the most promising therapeutic strategies for treating pulmonary arterial hypertension (PAH) involves counteracting the effects of these endothelins using a class of drugs known as endothelin receptor antagonists.
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme (ECE). Of...
Drug Administration and Therapy Phases: Overview01:26

Drug Administration and Therapy Phases: Overview

Drugs, the chemical agents used in diagnosing, treating, or preventing diseases, undergo a four-phase process of development: pharmaceutic, pharmacokinetics, pharmacodynamics, and therapeutic.
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The pharmacokinetic phase...
Disorders of the Male Reproductive System01:20

Disorders of the Male Reproductive System

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Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists

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Related Experiment Video

Updated: Jul 8, 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

Looking to the future for erectile dysfunction therapies.

Konstantinos Hatzimouratidis1, Dimitrios G Hatzichristou

  • 1Center for Sexual and Reproductive Health, Aristotle University of Thessaloniki, Thessaloniki, Greece.

Drugs
|January 17, 2008
PubMed
Summary

Erectile dysfunction (ED) treatments have advanced significantly, with phosphodiesterase type 5 (PDE5) inhibitors as a primary option. Future treatments aim for personalized medicine with diverse mechanisms of action.

Related Experiment Videos

Last Updated: Jul 8, 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:

  • Urology
  • Pharmacology
  • Sexual Medicine

Background:

  • Erectile dysfunction (ED) treatment has seen major advancements over the past two decades.
  • Current therapies, primarily phosphodiesterase type 5 (PDE5) inhibitors, offer high efficacy and safety.
  • A comprehensive review of ED treatment modalities is essential.

Purpose of the Study:

  • To evaluate available data on current and emerging treatment options for erectile dysfunction.
  • To highlight the role of PDE5 inhibitors and discuss new drug candidates.
  • To explore future therapeutic avenues, including gene therapy and tissue engineering.

Main Methods:

  • A MEDLINE search was conducted to gather data on ED treatment modalities.
  • Analysis of pharmacokinetic profiles and safety data for existing and novel drugs.
  • Review of ongoing research in gene therapy and tissue engineering for ED.

Main Results:

  • Phosphodiesterase type 5 (PDE5) inhibitors (sildenafil, tadalafil, vardenafil) are the current first-line treatment for ED.
  • New PDE5 inhibitors (e.g., avanafil, udenafil) are in development, requiring improved pharmacokinetic profiles.
  • Emerging treatments include receptor agonists, guanylate cyclase activators, rho-kinase inhibitors, and regenerative medicine approaches.

Conclusions:

  • No single ideal treatment for ED currently exists, necessitating patient awareness of all options.
  • Future advancements in drug development and personalized medicine will enhance ED treatment efficacy and safety.
  • Adopting a patient-centered care model in sexual medicine is crucial for optimizing outcomes.