Five Confirmed Human Cases of Gnathostomiasis Nipponica Recently Found in Northern Japan

Sato, Hiroshi; Kamiya, Haruo; Hanada, Katsumi

doi:10.2307/3283221

Cited by 18 publications

(11 citation statements)

References 4 publications

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“…These include Gnathostoma nipponicum from Japanese weasels (Mustela sibirica itatsi) in Aomori Pref. [8] that is a cause of several human cases of creeping eruption and itching there [11]. Furthermore, Taenia crassiceps and Taenia polyacantha were found from wild rodents, Microtus montebelli montebelli and Apodemus argenteus argenteus, respecitively, in Aomori Pref.…”

Section: Resultsmentioning

confidence: 99%

Parasitological Survey on Wild Carnivora in North-Western Tohoku, Japan.

et al. 1999

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ABSTRACT. In the winter of 1997-1998, we collected parasitological data from 60 wild carnivora in the north-western part of Tohoku region, Japan. These included 7 foxes (Vulpes vulpes japonica), 20 raccoon dogs (Nyctereutes procyonoides viverrinus), 29 martens (Martes melampus melampus), 3 weasels (two Mustela sibirica itatsi and one M. nivalis namiyei), and one Japanese badger (Meles meles anakuma). Roundworms (Toxocara canis in foxes and Toxocara tanuki in raccoon dogs), hookworms (Ancylostoma kusimaense and Arthrostoma miyazakiense) and Molineus sp. in the small intestine were the most prevalent in foxes and raccoon dogs. In martens, Aonchotheca putorii in the stomach, Concinnum ten in the pancreatic duct, Molineus sp. and Euryhelmis costaricensis in the small intestine were the most prevalent. Collected parasites include some new helminth species for this region or Japan; the strobilar stage of Taenia polyacantha from foxes, Pygidiopsis summa from a raccoon dog, Eucoleus aerophilus, A. putorii, and Soboliphyme baturini from martens.

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Section: Resultsmentioning

confidence: 99%

Parasitological Survey on Wild Carnivora in North-Western Tohoku, Japan.

et al. 1999

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“…From these results, it was clarified that the infectivity of AdL3 to Cyprinidae and Salmonidae freshwater fish was higher than the EaL3. Until our present study, the infection of Cyprinidae and Salmonidae with Recently, human cases of Gnathostoma nipponicum infection have been recorded in Aomori and Akita prefectures, Northern Honshu, Japan [3,13,14]. Several kinds of fish including Cyprinidae and Salmonidae freshwater fish were suspected as the possible agents of human gnathostomiasis nipponica because of a common past history of eating raw flesh of the fish among patients.…”

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confidence: 82%

Susceptibility of Several Species of Cyprinidae and Salmonidae Freshwater Fish to Larval Gnathostoma nipponicum Infection.

Oyamada

Ikadai

Kudo

et al. 1997

The Journal of Veterinary Medical Science

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ABSTRACT. Susceptibility of five species of Cyprinidae and Salmonidae freshwater fish to the early third-stage larvae (EaL3) and advanced third-stage larvae (AdL3) of Gnathostoma nipponicum infection were examined. Two fish species inoculated orally with EaL3 were infected, and AdL3 were recovered from them with rate of 21.0% in Tribolodon hakonensis and 0.5% in Cyprinus carpio at 30 days postinoculation (PI). Attempts to infect five fish species with AdL3 were all successful. The recovery rate of AdL3 was 69.0% in T. hakonensis, 47.5% in Carassius auratus subsp., 35.0% in C. carpio, 53.0 % in Oncorhynchus masou, and 32.0% in O. mykiss at 10 days PI. These results confirmed that the Cyprinidae and Salmonidae fish species reported here were susceptible to larval G. nipponicum infection and AdL3 had higher infectivity to them than the EaL3. -KEY WORDS: advanced third-stage larva, Gnathostoma nipponicum, intermediate host.

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“…In Gnathostoma nipponicum is a common nematode found in esophageal tumors of weasels, and is widely distributed in Japan [2, 5-7, 16, 23]. Recently, G. nipponicum has been found as a cause of human gnathostomiasis [1,3,22,24], as in the case of G. spinigerum [12], G. doloresi [14], and G. hispidum [10]. In the human cases, some freshwater fish were suspected of being the source of infection.…”

Section: Methodsmentioning

confidence: 99%

Survey for Gnathostoma nipponicum Larvae in Gobiid Freshwater Fish and Infectivity of the Larvae to a Gobiid Fish (Chaenogobius urotaenia).

Oyamada

Kudo

Yoshikawa

et al. 1997

The Journal of Veterinary Medical Science

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ABSTRACT. From June 1993 to November 1996, a total of 977 gobiid fish consisting of three species (Tridentiger brevispinis, Chaenogobius urotaenia, and Rhinogobius brunneus) collected from eastern Aomori Prefecture, were examined for Gnathostoma nipponicum larvae infection. Only one species, C. urotaenia was infected with advanced third-stage larvae (AdL3), and a total of 22 larvae were recovered from 17 (3.4%) of 500 fish. The infected fish were larger than 12 cm in body length and collected in the May-June and SeptemberNovember seasons. Experimental studies confirmed that C. urotaenia was susceptible to both the early third-stage larvae (EaL3) obtained from Eucyclops serrulatus and AdL3 from Misgurnus anguillicaudatus. Eight of 10 C. urotaenia inoculated orally with 10 EaL3 were positive, and 36 AdL3 were recovered from them (recovery rate: 36.0%) at 30 days postinoculation (PI). All 10 C. urotaenia inoculated with 10 AdL3 were also positive, and a total of 63 AdL3 were recovered (recovery rate: 63.0%) at 10 days PI. The main location of the larvae was the body muscles of the fish. No morphological alterations or death of the larvae were observed in this study. From these results, it seems that the C. urotaenia has characteristics suitable to be the host to the larvae and they may serve as the second intermediate and paratenic host in the natural life cycle of this nematode. -KEY WORDS: advanced third-stage larvae, Chaenogobius urotaenia, Gnathostoma nipponicum, gobiid fish, life cycle.

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Five Confirmed Human Cases of Gnathostomiasis Nipponica Recently Found in Northern Japan

Cited by 18 publications

References 4 publications

Parasitological Survey on Wild Carnivora in North-Western Tohoku, Japan.

Parasitological Survey on Wild Carnivora in North-Western Tohoku, Japan.

Susceptibility of Several Species of Cyprinidae and Salmonidae Freshwater Fish to Larval Gnathostoma nipponicum Infection.

Survey for Gnathostoma nipponicum Larvae in Gobiid Freshwater Fish and Infectivity of the Larvae to a Gobiid Fish (Chaenogobius urotaenia).

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