Babesia


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Babesia

[bə′bezh·ə]
(invertebrate zoology)
The type genus of the Babesiidae, a protozoan family containing red blood cell parasites.

Babesia

 

(or Piroplasma), a genus of protozoa of the order Piroplasmidae, class Sarcodina. The name was given in 1893 in honor of the Rumanian scholar V. Babe§, who first discovered the parasites in 1888 in the blood of cattle.

Some authors divide the genus Babesia into four genera or subgenera (Piroplasma. Nuttallla, Babesiella, and Franca-iella). Babesias are blood parasites of cattle, horses, sheep, pigs, and dogs. They cause a serious disease, babesiasis. In the erythrocytes of mammals babesias multiply asexually, with each one dividing into two or four organisms. Babesias are transmitted by ticks, in whom they reproduce asexually in the intestinal tract or in the intracellular spaces. In this situation forms of babesias can orginate in the ovule of the tick and remain there multiplying asexually. From such infected tick eggs come larvae with babesias in all their organs and salivary glands. When a tick sucks the blood of a vertebrate animal, babesias are transmitted to that organism and they then become lodged in the erythrocytes. In the USSR there are ten species; the main ones are B. bigemina (Piro-plasma bigeminum), B. bovis (Piroplasma bovis, Babesiella bovis), and B. ovis (Piroplasma ovis, Babesiella ovis).

REFERENCES

Dogel’, V. A., Iu. 1. Polianskii, and E. M. Kheisin. Obshchaia
protozoologiia. Moscow-Leningrad, 1962.
Levine, N. D. Protozoan Parasites of Domestic Animals and of Man. Minneapolis, 1961.

O. I. CHIBISOVA

References in periodicals archive ?
Babesia microti is a plasmodium that infects red blood cells, leading to hemolysis.
Incidence of Anaplasma spp, Babesia spp and Trypanasoma spp in cattle of Karnataka.
Babesia parasites infect and destroy red blood cells, and babesiosis is of particular concern among newborns, the elderly and those with compromised immune systems.
In the United States, most cases are caused by the parasite Babesia microti, which is most often carried on the tick species Ixodes scapularis.
Babesia is a tick-borne parasite of red blood cells, and the number of cases of babesiosis being transmitted through blood transfusion has been increasing since 1979, according to a study published online Sept.
Some manufacturers are working with investigators at blood establishments to develop FDA-approved tests for Babesia for donor-screening purposes.
For the study, pregnant female mice were housed next to males infected with Babesia microti, which is a mild blood parasite causing few symptoms, but some anaemia.
scapularis collected in Indiana and examined during a recent study were found to harbor Babesia microti (the agent of human babesiosis) and, as far as is known, no human cases of babesiosis have been reported in Indiana, 5% of the ticks collected in Pulaski county were positive for Anaplasma phagocytophilum (the agent of human anaplasmosis) (Steiner et al.
Their material on viruses range from the herpes virus to retroviruses, and data on bacteria covers bacterial meningitis, focal bacterial infections and parameningeal infections, the Shigella series and Mycobacterium tuberculosis, rickettsia and spirochetes including the Ehrickia and Anaplasma species, fungi including Candida and phaeohyphomycoses, protozoa including the Babesia species, helminth infections, primary immunodeficiencies, and basic principles of selective neurological treatments.
Juridical Foundation The Chemo-Sero-Therapeutic Research Institute (Kumamoto-shi, Japan) has patented a gene encoding a protein from merozoite of Babesia caballi, a recombinant protein of Babesia caballi, and an antibody capable specifically binding to a 48 kDa protein of rhoptry of Babesia caballi merozoite.
But there are many horrible diseases lurking, just waiting for a warm wind to blow in the wrong direction, including: Babesiosis - this particular delight is caused by the protozoan parasite, Babesia canis.