Effect of iron on the virulence of Trichomonas vaginalis

J S Ryu1, H K Choi, D Y Min

  • 1Department of Parasitology, Hanyang University College of Medicine, Seoul, Korea.

Insights

Iron is crucial for Trichomonas vaginalis virulence. Depleting iron in the growth medium significantly reduced the parasite

Area of Science:

  • Parasitology
  • Infectious Diseases
  • Nutritional Impact on Pathogens

Background:

  • Iron is an essential nutrient for many pathogens.
  • The role of iron in the virulence of Trichomonas vaginalis remains incompletely understood.
  • Trichomonas vaginalis is a common sexually transmitted parasite.

Purpose of the Study:

  • To investigate the impact of iron availability on the virulence of Trichomonas vaginalis.
  • To assess how iron influences the adherence and cytotoxicity of T. vaginalis.

Main Methods:

  • Cultivation of T. vaginalis in iron-supplemented and iron-depleted media.
  • Inoculation of mice with cultivated trophozoites to evaluate abscess formation.
  • Assessment of trophozoite adherence and cytotoxicity to HeLa cells in vitro.

Main Results:

  • Trophozoites grown in iron-deficient medium failed to produce pathology in mice.
  • Iron-supplemented and normal media supported abscess formation.
  • Reduced iron levels significantly decreased T. vaginalis adherence and cytotoxicity to HeLa cells.

Conclusions:

  • Iron availability is a critical factor in the virulence of Trichomonas vaginalis.
  • Iron depletion attenuates the pathogenicity of T. vaginalis.
  • Iron influences key virulence factors including adherence and cytotoxicity.

Related Concept Videos

Factors Affecting the Risk of Infection01:26

Factors Affecting the Risk of Infection

The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin create...
Sexually Transmitted Infections01:26

Sexually Transmitted Infections

Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
Urinary Tract Infection II: Pathophysiology01:25

Urinary Tract Infection II: Pathophysiology

The pathophysiology of urinary tract infections (UTIs) encompasses several progressive stages, beginning with bacterial colonization and culminating in potential systemic complications if untreated. UTIs are primarily initiated by bacteria, such as Escherichia coli, which often originate from the gastrointestinal tract and migrate to the urinary system through the periurethral area. This migration can occur via several routes, including improper hygiene practices, sexual activity, or...
Microbiota of the Urogenital Tract01:28

Microbiota of the Urogenital Tract

The human urogenital system, once thought to be sterile in healthy individuals, is now recognized as a complex microbial habitat. Advancements in molecular sequencing techniques have revealed that even in healthy adults, the kidneys and bladder harbor microbial populations similar to those found in the distal urethra, albeit in much lower abundance. These resident microorganisms, while generally innocuous, can become opportunistic pathogens under conditions that alter the urogenital...
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.
Antiprotozoal Agents01:21

Antiprotozoal Agents

Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...