sporozoite


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Related to sporozoite: merozoite, sporogony

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.
[sporo- + G. zōon, animal]

sporozoite

/spo·ro·zo·ite/ (-zo´īt) the motile, infective stage of certain protozoa that results from sporogony.

sporozoite

(spôr′ə-zō′īt′)
n.
Any of the cells that are released from the oocyst of an apicomplexan parasite and invade a new host cell.

sporozoite

[spôr′əzō′īt]
Etymology: Gk, sporos + zoon, animal
any of the cells resulting from the sexual union of spores during the life cycle of a sporozoon. It refers specifically to the elongated nucleated cells produced by the multiple fission of the zygote contained in the oocyst in the female Anopheles mosquito during the sexual reproductive stage of the life cycle of the malarial parasite Plasmodium. On release from the oocyst, the sporozoites migrate to the salivary glands of the mosquito, where they are transmitted to humans and develop within the parenchymal cells of the liver as merozoites. Also called falciform body. See also malaria, Plasmodium.

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]

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.

sporozoite

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

sporozoite

a spore formed after fertilization; a sickle-shaped nucleated germ formed by division of the protoplasm during sporogony (asexual replication) of an apicomplexan parasite. The sporozoite is an infective stage (e.g. Eimeria, Cryptosporidium).
References in periodicals archive ?
In this study, measurements of oocysts, sporocysts, and sporozoites of the Caryospora species observed were obtained.
tenella sporozoite vaccine than antigen alone when compared with positive control.
Over 23,000 were used for the irradiated sporozoite vaccinations in the 1990s and over 27,000 were used in irradiated sporozoite vaccination studies in 2014.
Secondly, experimental immunization of non-immune volunteers with sporozoites previously attenuated through irradiation has demonstrated that up to 90% of the individuals vaccinated develop sterile protection against the experimental infection (7).
Here too, released sporozoites accumulated in macrophages or endothelial cells, prior their establishment in circulating erythrocytes.
TRAP is necessary for gliding motility and infectivity of plasmodium sporozoites.
Transmission to the host via saliva contaminated with sporozoites occurs when the tick feeds on animal hosts or humans.
Proteoglycans mediate malaria sporozoite tarjeting to the liver.
Eventually, more sporozoites emerge from the gut and penetrate the mosquito's salivary glands, where they await a chance to enter another human bloodstream, to begin the cycle again.
It enables the stage that emerges from the oocyst, called a sporozoite, to invade the bird's T cells.
A fourth is salivary-gland barriers that prevent sporozoite penetration or reduce survivorship of sporozoites (Rosenberg 1985).
Each sporozoite contains single homogenous posterior refractile body, 5.