On setaria digitata, its specific characters, incidence and development in aedes vittatus and Armigeres obturbans in India with a note on its ectopic occurrence

Varma, A. K.; Sahai, B. N.; Singh, S. P.; Lakra, P.; Shrivastava, Vinoy K.

doi:10.1007/bf00328975

Cited by 8 publications

(3 citation statements)

References 6 publications

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“…Since 12.8% of cattle were found to be microfilaraemic and the vector, Armigeres sp. that transmits S. digitata in cattle (Verma et al, 1971) has an anthropophilic biting habit (Mahapatra et al, 1995), it is highly probable that a significant proportion of humans can be exposed to infective larvae of S. digitata. However existing tools do not allow specific measurements of immune responses of humans to S. digitata infections.…”

Section: Resultsmentioning

confidence: 99%

Setaria digitatainfections in cattle: parasite load, microfilaraemia status and relationship to immune response

et al. 2000

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A total of 110 cattle were examined in an area endemic for Bancroftian filariasis for the prevalence of infection of the bovine filarial parasite Setaria digitata. About 12.5% of cattle were found to harbour both adult worms in the peritoneum and microfilariae (mf) in circulation; 70% of the cattle were amicrofilaraemic but with an adult worm infection. A third group of cattle (16.5%) was free of detectable mf and adult worms. The presence of adult worms and/or mf did not influence the antibody levels to any of the four antigen preparations of S. digitata. However, there was a significant inverse relationship between the presence of antibodies to microfilarial sheaths and the absence of circulating mf as shown by the immunoperoxidase assay. Cattle immunoglobulin containing high titres of anti-sheath antibodies cleared circulating microfilariae very effectively in Mastomys coucha thus demonstrating the protective nature of anti-sheath antibodies in eliminating circulating microfilariae in vivo.

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Section: Resultsmentioning

confidence: 99%

Setaria digitatainfections in cattle: parasite load, microfilaraemia status and relationship to immune response

et al. 2000

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“…Generally, the parasite can be found in various organs such as heart, lung, spleen, kidney, uterus, oviduct, ovary and urinary bladder, as well as in the contents of rumen, reticulum and abomasum (Mandal et al, 1994). The parasite is transmitted by mosquitoes through the blood stream (Varma et al, 1971). In Indian subcontinent, it occurs mostly in summer and autumn seasons when the vectors (Anopheles peditaneniatus and Culex nilgiricus) are most prevalent (Mritunjay et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

A case study on needling technique as a treatment for ocular setariasis in eye of a horse

Rahman

Rana

Tanvir

et al. 2017

Asian J. Med. Biol. Res

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A 2.5 year old male horse was presented to Teaching Veterinary Hospital, VCRI, Namakkal, India with the history of lacrimation, impaired vision and progressive corneal opacity in left eye. Clinical examination revealed movement of a thread like worm in the anterior chamber of the eye. For removal of the worm, affected eye was prepared for surgery by deep sedation with xylazine hydrochloride. Then general anaesthesia was done with Ketamine hydrochloride and maintained by isoflurane. After induction, worm was removed by needling technique. Topical antibiotic and steroid were administered postoperatively to check secondary bacterial infection and corneal opacity. After surgery, the vision was restored and corneal opacity was reduced gradually. Morphologically, the worm was identified as Setaria spp. This is a common case in India due to vector prevalence.

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“…The parasite exhibits migratory behavior in unusual hosts such as horses, donkeys or human beings and can be found in various organs such as heart, lung, spleen, kidney, uterus, oviduct, ovary, and urinary bladder (Varma et al, 1971). All equines are generally more prone for ocular worm (Pratap, et al, 2005;Jayakumar et al, 2012;Radwan et al, 2016).The immature worm can also invade eye (Sreedevi et al, 2002;Tuntivanich et al, 2011) through the vascular system (Townsend, 2013).…”

Section: Introductionmentioning

confidence: 99%

Equine ocular setariasis and its management

Rafee¹,

Amarpal²

2016

JEBAS

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Ocular setariasis is a common vision threatening ophthalmic condition in equine resulting from ectopic parasitism by Setaria digitata, Setaria equina and Thelazia lacrymalis. The disease occurs mostly in summer and autumn seasons and it displays signs of lacrimation, photophobia, corneal opacity, conjunctivitis and loss of vision. Close inspection of the eye reveals a moving worm in the anterior chamber of the eye. B-mode (brightness mode) ultrasonography helps in the diagnosis in case of complete opacity. The best treatment is the surgical removal of the parasite under regional/ general anesthesia. Needle paracentesis at 3 O' clock and nick incision at 12 O' clock position are most commonly used surgical procedure. Both the techniques give good results. A slightly modified technique of using a 21 gauge needle attached with the syringe to aspirate the worm into the syringe also gives satisfactory results. In medicinal therapy ivermectin is the most advocated drug for ocular equine setariasis, but long term tying of medicinal should be avoided and surgery should be advocated. Corneal opacity is the most common post operative complication reported. Post surgical use of placentrex has also been advocated to enhance healing and to resolve corneal opacity. The present review is aimed at etiology, diagnosis and management of ocular setariasis in equine species.

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On setaria digitata, its specific characters, incidence and development in aedes vittatus and Armigeres obturbans in India with a note on its ectopic occurrence

Cited by 8 publications

References 6 publications

Setaria digitatainfections in cattle: parasite load, microfilaraemia status and relationship to immune response

Setaria digitatainfections in cattle: parasite load, microfilaraemia status and relationship to immune response

A case study on needling technique as a treatment for ocular setariasis in eye of a horse

Equine ocular setariasis and its management

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