An up-date on Giardia and giardiasis.
Elin Einarsson1, Showgy Ma'ayeh1, Staffan G Svärd1
1Department of Cell and Molecular Biology, BMC, Box 596, Uppsala University, SE-751 24 Uppsala, Sweden.
Current Opinion in Microbiology
|November 7, 2016
Summary
Giardia intestinalis infections cause diarrhea in millions annually. Recent research advances explain giardiasis mechanisms, chronic disease, and treatment failures, improving understanding of this common parasitic infection.
Area of Science:
- * Medical Parasitology
- * Infectious Diseases
- * Gastroenterology
Background:
- * Giardia intestinalis is a protozoan parasite responsible for giardiasis, affecting 280 million people yearly.
- * While often asymptomatic or self-resolving, infections can lead to chronic illness, treatment resistance, and post-infectious syndromes like IBS.
- * Understanding the mechanisms behind giardiasis, treatment failures, and associated chronic conditions has been limited.
Purpose of the Study:
- * To review recent advancements in understanding Giardia intestinalis infections.
- * To elucidate the mechanisms driving giardiasis, chronic disease development, and treatment failures.
- * To explore the causes of post-giardiasis syndromes.
Main Methods:
- * Literature review of recent scientific publications on Giardia intestinalis.
- * Analysis of data pertaining to parasite mechanisms and host-pathogen interactions.
- * Synthesis of findings related to clinical outcomes and treatment efficacy.
Main Results:
- * Significant progress has been made in elucidating the molecular mechanisms of Giardia intestinalis infection.
- * New insights into factors contributing to chronic giardiasis and therapeutic challenges have emerged.
- * Understanding of the pathogenesis of post-giardiasis syndromes, including IBS and allergies, is improving.
Conclusions:
- * Recent research has shed light on the complexities of Giardia intestinalis infections.
- * This progress offers potential avenues for improved diagnostics and therapeutics for giardiasis and its sequelae.
- * Further investigation is warranted to fully address treatment failures and chronic post-infectious conditions.
Related Concept Videos
Diversity of Protists I
2.0K
Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
2.0K
Fungal Phylum Microsporidia
679
Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
679
Drugs Affecting GI Tract Motility: Antimicrobials as Antidiarrheal Agents
523
Acute diarrhea, a common gastrointestinal disturbance, is characterized by the rapid evacuation of fluid stools, leading to an excessive weight in fluid. This condition typically arises from disorders affecting intestinal water and electrolyte transport. It can be triggered by an increased osmotic load within the intestine, excessive secretion of electrolytes and water, mucosal exudation of protein and fluid, or altered intestinal motility. The primary risks of acute diarrhea are dehydration...
523
Gastrointestinal Motility Disorders
1.5K
Gastrointestinal or GI motility disorders are characterized by irregular gastrointestinal tract movements, disrupting food transit from the mouth to the anus. They are caused by damage or dysfunction in gut muscles or nerves. These disorders can cause symptoms such as severe constipation, diarrhea, abdominal pain, and swallowing difficulties. Disorders can affect any segment of the GI tract and range widely in severity, from common conditions like GERD to life-threatening conditions like...
1.5K
Sexually Transmitted Infections
1.5K
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...
1.5K
Drugs Affecting GI Tract Motility: Adsorbents as Antidiarrheal Agents
721
Diarrhea is characterized by the occurrence of frequent, watery bowel movements. Various factors can trigger diarrhea, including viral or bacterial infections, foodborne illnesses, side effects from certain medications, and underlying digestive disorders. If not adequately managed, diarrhea can lead to complications such as dehydration, electrolyte imbalances, and nutrient deficiencies. Severe diarrhea can lead to significant weight loss, malnutrition, and weakened immune function.
Adsorbents...
Adsorbents...
721


