sporozoite

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Related to Sporozoites: Merozoites

sporozoite

[spor″o-zo´īt]

a spore formed after fertilization; any one of the sickle-shaped nucleated germs formed by division of the protoplasm of a spore of a sporozoan organism. In malaria, the sporozoites are the forms of the plasmodium that are liberated from the oocysts in the mosquito, that accumulate in the salivary glands, and that are transferred to humans when the mosquito feeds.

spo·ro·zo·ite

(spō'rō-zō'īt),

One of the minute elongated bodies resulting from the repeated division of the oocyst during sporogony. In the case of the malarial parasite, it is the form that is concentrated in the salivary glands and introduced into the blood by the bite of a mosquito; it enters the liver cells (exoerythrocytic cycle), the progeny of which, the merozoites, infect the red blood cells to initiate clinical malaria.

Synonym(s): germinal rod, zoite, zygotoblast

[sporo- + G. zōon, animal]

Farlex Partner Medical Dictionary © Farlex 2012

sporozoite

(spôr′ə-zō′īt′)

Any of the cells that are released from the oocyst of an apicomplexan parasite and invade a new host cell.

spo·ro·zo·ite

(spōr'ō-zō'īt)

One of the minute elongated bodies resulting from the repeated division of the oocyst during sporogony. In the case of the malarial parasite, it is the form that is concentrated in the salivary glands and introduced into the blood by the bite of a mosquito; it enters the liver cells (exoerythrocytic cycle); its progeny, the merozoites, infect the red blood cells to initiate clinical malaria.

[sporo- + G. zōon, animal]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

sporozoite

A motile reproductive form of a SPOROZOON that has been released from an oocyst and is ready to penetrate a new host cell, as in malaria transmission.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

sporozoite

any of the very small mobile spores formed by multiple fission of a protozoan zygote, as in the MALARIA PARASITE.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

References in periodicals archive ?

For [R.sub.0] < 1 (see Figure 3), the density of susceptible hepatocyte initially declines as the density of infected hepatocytes rises due to invasion from sporozoites. The host's immune system responds to sporozoite invasion by increasing hepatocyte density that levels off at the disease-free equilibrium point [E.sub.0] (see Figure 3(a)).

Mathematical Model for Hepatocytic-Erythrocytic Dynamics of Malaria

Real time in vivo imaging to determine the timing and level of luminescence measured from luciferase expression of sporozoites development in the liver has previously been described [6, 10].

Long-Term Prophylaxis and Pharmacokinetic Evaluation of Intramuscular Nano- and Microparticle Decoquinate in Mice Infected with P. berghei Sporozoites

Shi et al., "Interrogating the Plasmodium sporozoite surface: identification of surface-exposed proteins and demonstration of glycosylation on CSP and TRAP by mass spectrometry-based proteomics," PLoS Pathogens, vol.

Evolution of the Apicomplexan Sugar Transporter Gene Family Repertoire

On ingestion of food contaminated with oocysts, the sporozoites present in the oocysts get entry into the gastrointestinal tract of secondary host (Fig.

TOXOPLASMOSIS IN FOUR CAPRINE BREEDS: A FUTURE RISK OF ZOONOSIS

The immune response of coccidian sporozoites vaccinated experimental birds were assessed by enzyme linked immuno sorbent assay (ELISA) developed as per the method recommended by CONSTANTINOIU et al.

Development of antibodies in broiler chickens immunized with adjuvanted Eimeria tenella sporozoites

Average vectorial capacity (i.e., expected number of new human infections from 1 infected person within 1 day, assuming all mosquitoes with sporozoites are potentially infective) of An.

Transmission risk from imported Plasmodium vivax Malaria in the China-Myanmar border region

Interventions that specifically target the pre-erythrocytic stage have been in the pipeline since it was first shown that sporozoites elicit an immune response capable of preventing subsequent infection.

Controlled human malaria infection at the Walter Reed Army Institute of Research: the past, present, and future from an entomological perspective

Speer, <<Structures of Toxoplasma gondii Tachyzoites, Bradyzoites, and Sporozoites and Biology and Development of Tissue Cysts,>> Clinical Microbilogy Reviews, vol.

Hybrid model of the spread of toxoplasmosis between two town of Colombia/Modelo hibrido de propagacion de la toxoplasmosis entre dos pueblos de Colombia

Oocysts containing up to eight sporozoites similar to Nematopsis (Apicomplexa) were observed in the connective tissue, causing haemocytic infiltration when the intensity of infection was high (Fig.

Estudio histopatologico del chorito Mytilus chilensis (mytilidae) y del culengue Gari solida (psammobiidae) en el sur de Chile

The cold Ziehl-Neelsen method was carried out to identify intestinal sporozoites such as oocysts of Cryptosporidium.

Human parasitic protozoa in drinking water sources in rural Zimbabwe and their link to HIV infection

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