Schistosoma nasale

Schistosoma nasale
Scientific classification
Kingdom: Animalia
Phylum: Platyhelminthes
Class: Trematoda
Subclass: Digenea
Order: Strigeidida
Family: Schistosomatidae
Genus: Schistosoma
Species: S. nasale
Binomial name
Schistosoma nasale
Rao, 1933

Schistosoma nasale is a species of digenetic trematode in the family Schistosomatidae.

Schistosoma nasale was identified in 1933 by Dr. M. A. N. Rao at Madras Veterinary College, Tamil Nadu, India, as a casuasative agent for “snoring disease“ in cattle.

The most important the first intermediate host is a freshwater snail Indoplanorbis exustus[1] that may be the sole natural intermediate host for Schistosoma nasale (and other two Schistosoma species) on the Indian sub-continent.[1] Other snails are also impolicated in transmission of Schistosoma nasale as its the first intermediate host and they include: Lymnaea luteola and Lymnaea acuminata.[1]

Schistosoma nasale inhabits blood vessels of the nasal mucosa and causes “snoring disease” in cattle.[1]

The disease affects almost the whole cattle population in the endemic area. The clinical symptoms include a cauliflower-like growth or granuloma in the nasale cavity, associated with a "snoring" sound and profuse mucopurulent discharge. Anthiomaline was the drug of choice, but this leads to relapse of the symptoms after two months of the treatment.

Recently, Dr. M. C. Agrawal has successfully treated cases of nasal schistosomiasis by administering triclabendazole at a dosage of 20 mg/kg body weight.

References

This article incorporates CC-BY-2.0 text from the reference [1].

  1. ^ a b c d e Liu L. et al. (2010) "The phylogeography of Indoplanorbis exustus (Gastropoda: Planorbidae) in Asia". Parasites & Vectors 3: 57. doi:10.1186/1756-3305-3-57.

Further reading