Human gnathostomiasis caused by <i>Gnathostoma doloresi</i>, with particular reference to the parasitological investigation of the causative agent

Akahane, H.; Shibue, K.; Shimizu, Aiko; Toshitani, Shoji

doi:10.1080/00034983.1998.11813332

Cited by 12 publications

(7 citation statements)

References 4 publications

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“…Other morphological features present in the larva could not be studied well since the parasite dispatched in normal saline and received for identification 7 days after recovery from the eye was found to be degenerated. The morphological features on the head bulb and body cuticle were found to be consistent with those of G. doloresi (Nawa et al, 1989, Akahane et al, 1998, Imai and Hasegawa, 2001) [26,29,30] and the parasite was tentatively identified as the third stage larva of G. doloresi. [29,31] .…”

Section: Resultsmentioning

confidence: 58%

“…The morphological features on the head bulb and body cuticle were found to be consistent with those of G. doloresi (Nawa et al, 1989, Akahane et al, 1998, Imai and Hasegawa, 2001) [26,29,30] and the parasite was tentatively identified as the third stage larva of G. doloresi. [29,31] . The larva of G. doloresi of the present investigation differed from G. spinigerum (Akahane et al, 1994; Baruah et al, 2011) [25,32] and G. hispidum (Akahane et al, 1982; Cho et al, 2007) [24,27] by the presence of lowest number of hooklets on the head [33,26,29,30] .…”

Section: Resultsmentioning

confidence: 58%

“…[29,31] . The larva of G. doloresi of the present investigation differed from G. spinigerum (Akahane et al, 1994; Baruah et al, 2011) [25,32] and G. hispidum (Akahane et al, 1982; Cho et al, 2007) [24,27] by the presence of lowest number of hooklets on the head [33,26,29,30] . Detection of G. doloresi larva in Assam for the first time is in accordance with Maplestone (1930) [12] and Yadav and Tandon (1994) [14] who reported occurrence of adults of this species in pigs from the neighbouring states of West Bengal and Meghalaya respectively.…”

Section: Resultsmentioning

confidence: 99%

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Larval Gnathostoma: morphological identification and probable source of a case of human eye infection in Assam, India

Sarmah¹,

Bhattacharjee²

2022

J. Entomol. Zool. Stud.

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The present communication deals with morphological identification of a parasite specimen sent from a private eye hospital at Guwahati, Assam after its extraction alive from the aqueous humor in the right eye of a non-tribal rural woman from Assam. The parasite 3 mm X 0.3 mm in size, characterized by the presence of a distinct anterior head bulb armed with four rows of hooklets numbering less than 40 per row and spination along the transverse striations present throughout the body was identified as the third stage larva of a pig gnathostome, Gnathostoma doloresi. Interview based investigation to ascertain the source of G. doloresi infection reported here for the first time in the 32 year old non-vegetarian house wife having no history of raw fish consumption revealed water used for domestic purpose from a pond adjacent to domestic pig pastured swampy area and the fresh water fishes as the possible sources of infection which might have occurred by accidental ingestion of infected cyclops present in pond water or by direct skin penetration of the larval stage of the parasite during descaling and evisceration of infected fishes prepared for cooking and consumption.

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Section: Resultsmentioning

confidence: 58%

Section: Resultsmentioning

confidence: 58%

Section: Resultsmentioning

confidence: 99%

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Larval Gnathostoma: morphological identification and probable source of a case of human eye infection in Assam, India

Sarmah¹,

Bhattacharjee²

2022

J. Entomol. Zool. Stud.

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“…The species most frequently found in humans and most widely distributed around the world is G. spinigerum; G. binucleatum is found in the Americas [1]. Sporadic cases caused by G. doloresi, G. hispidum, and G. nipponicum have been documented in Asia [20][21][22][23].…”

Section: Gnathostoma Spp and Their Life Cyclesmentioning

confidence: 99%

Human gnathostomiasis: a neglected food-borne zoonosis

Sun

Elsheikha

et al. 2020

Parasites Vectors

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Background Human gnathostomiasis is a food-borne zoonosis. Its etiological agents are the third-stage larvae of Gnathostoma spp. Human gnathostomiasis is often reported in developing countries, but it is also an emerging disease in developed countries in non-endemic areas. The recent surge in cases of human gnathostomiasis is mainly due to the increasing consumption of raw freshwater fish, amphibians, and reptiles. Methods This article reviews the literature on Gnathostoma spp. and the disease that these parasites cause in humans. We review the literature on the life cycle and pathogenesis of these parasites, the clinical features, epidemiology, diagnosis, treatment, control, and new molecular findings on human gnathostomiasis, and social-ecological factors related to the transmission of this disease. Conclusions The information presented provides an impetus for studying the parasite biology and host immunity. It is urgently needed to develop a quick and sensitive diagnosis and to develop an effective regimen for the management and control of human gnathostomiasis.

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“…When a Gnathostoma larva is observed in tissue sections, the shape of head-bulb hooks (if sectioned), and more importantly, the morphology of intestinal epithelium (the number and morphology of intestinal cells and the number of nuclei in each intestinal cell) are useful for differentiation of species [6]. Larvae of G. hispidum can be differentiated from those of G. spinigerum in that the former has 19-35 spherical intestinal cells and usually 1 large nucleus in the center of each cell, whereas the latter has 21-29 columnar or cylindrical intestinal cells and 3-7 small scattered nuclei in each cell [6,11,12]. In our specimens, about 30 (27-31) intestinal cells, each with a large nucleus in the center, were recognized and was compatible to the descriptions of G. hispidum.…”

Section: Discussionmentioning

confidence: 99%