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Related Concept Videos

Malaria01:29

Malaria

Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...
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Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
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Diversity of Protists II

Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
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Toxoplasmosis, a zoonotic disease caused by the protozoan Toxoplasma gondii, poses significant public health challenges globally due to its high seroprevalence and varied clinical manifestations. As an obligate intracellular parasite, T. gondii can infect all warm-blooded vertebrates, but felids are its only definitive hosts, shedding unsporulated oocysts into the environment. Humans typically acquire the infection through ingestion of tissue cysts in undercooked meat or oocysts from...
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Giardiasis is a globally prevalent intestinal infection caused by the protozoan parasite Giardia duodenalis (also known as G. lamblia or G. intestinalis). This flagellated protozoan is the most frequently identified intestinal parasite in the United States and worldwide. Transmission primarily occurs via the fecal-oral route, with infection arising from ingestion of water or food contaminated with cysts. Individuals in low-resource settings, international travelers, outdoor enthusiasts, daycare...
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Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...

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Malaria.

Lynne S Garcia1

  • 1LSG & Associates, Santa Monica, CA 90402-2908, USA. Lynnegarcia2@verizon.net <Lynnegarcia2@verizon.net>

Clinics in Laboratory Medicine
|June 2, 2010
PubMed
Summary
This summary is machine-generated.

Malaria, caused by Plasmodium parasites, infects millions and causes over 1.5 million deaths annually, predominantly in children in Africa. This review covers key Plasmodium species, diagnosis, and treatment challenges.

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Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Global Health

Background:

  • Malaria remains a significant global health burden, impacting over 2.4 billion people in 90 endemic countries.
  • Plasmodium parasites cause millions of infections and over 1.5 million deaths yearly, with children in Africa being the most vulnerable.
  • Despite ongoing research, effective malaria prevention and universally effective treatments are still lacking.

Purpose of the Study:

  • To provide a comprehensive review of malaria caused by common human Plasmodium species (P. vivax, P. ovale, P. malariae, P. falciparum).
  • To discuss mixed Plasmodium infections and the simian parasite P. knowlesi.
  • To detail the microbiology, clinical presentation, pathogenesis, diagnosis, and treatment of these malaria forms.

Main Methods:

  • Literature review of Plasmodium species, focusing on P. vivax, P. ovale, P. malariae, P. falciparum, mixed infections, and P. knowlesi.
  • Synthesis of information on clinical presentation, pathogenesis, diagnosis, and treatment strategies.
  • Analysis of global malaria impact and mortality statistics.

Main Results:

  • Malaria affects 40% of the world's population, with 90% of deaths occurring in Africa.
  • P. falciparum is a major cause of severe malaria and mortality.
  • Challenges in prevention and treatment persist due to parasite resistance and lack of universal drug efficacy.

Conclusions:

  • A thorough understanding of Plasmodium species, their clinical manifestations, and pathogenesis is crucial for effective malaria control.
  • Accurate diagnosis and appropriate treatment are essential to reduce morbidity and mortality, especially in high-risk populations.
  • Continued research into novel prevention strategies and drug development is necessary to combat the persistent threat of malaria.