Isthmiophora hortensis (Digenea: Echinostomatidae) is a dominant echinostome in animal reservoir hosts and humans in the Republic of Korea (Korea). We intended to investigate the infection status with this echinostome species in the several species of wild animals and describe the morphological characteristics in the faunistic view point. A total of 175 animal carcasses belonging to 3 families, i.e., Canidae, Felidae and Mustelidae, were collected from the southern regions of Korea from March 2010 to July 2017. Isthmiophora spp. worms were recovered from the small intestines of each animal under a stereomicroscope after washing of intestinal contents. Isthmiophora hortensis was recovered from 4 species of wild carnivores, i.e., Nyctereutes procyonoides (3/107: 2.8%), Mustela sibirica (11/31: 35.5%), Meles lucurus (2/3: 33.3%) and Martes flavigula (1/2: 50%). The other 3 carnivores comprising stray dogs, cat and leopard cat were negative for I. hortensis infection (0/2, 0/10 and 0/12, respectively). Specimens obtained from the Lutra lutra (6/8: 75%) were identified as a distinct species, I. inermis, by morphological comparison. Isthmiophora inermis has thinner body, elongate testes and different anterior limits of vitelline fields. Detailed morphological descriptions and comparisons with the morphological characteristics are provided. Conclusively, it was confirmed for the first time that 3 species of mustelid mammals, i.e., M. sibirica, M. lucurus, and M. flavigula, are to be the new definitive hosts of I. hortensis in Korea. Additionally, I. inermis is to be newly added in the Korean echinostome fauna.
Animals ; Animals, Wild ; Canidae ; Cats ; Dogs ; Felidae ; Gastrointestinal Contents ; Humans ; Intestine, Small ; Korea ; Mammals ; Mustelidae ; Otters ; Panthera ; Raccoon Dogs ; Republic of Korea ; Testis ; Vitellins

Adult gnathostomes were discovered in the stomach of the Jeju weasel, Mustela sibilica quelpartis, road-killed in Jeju-do (Province). Their morphological characters were examined to identify the species. Total 50 gnathostome adults were collected from 6 out of 10 weasels examined. In infected weasels, 4-6 worms were grouped and embedded in each granulomatous gastric tumor, except 1 weasel. Male worms were 25.0x1.4 mm in average size, and had a tail with pedunculate papillae, a spicule, and minute tegumental spines. Females were 40.0x2.5 mm in average size, and had a tail without tegumental spines. Pointed and posteriorly curved hooklets were arranged in 8-10 rows on the head bulb. Tegumental spines were distributed from behind the head bulb to the middle portion of the body. The spines were different in size and shape by the distribution level of the body surface. Fertilized eggs were 65.5x38.9 microm in average size, and had a mucoid plug at 1 pole. These gnathostomes from Jeju weasels were identified as Gnathostoma nipponicum Yamaguti, 1941. By the present study, it was confirmed for the first time that G. nipponicum is distributed in Jeju-do, the Republic of Korea, and the Jeju weasel, M. sibilica quelpartis, plays a crucial role for its definitive host.
Animals ; Female ; Gnathostoma/anatomy & histology/classification/*isolation & purification/*pathogenicity ; Male ; Mustelidae/*parasitology ; Republic of Korea ; Stomach/parasitology

To know the status of sparganum (plerocercoid of Spirometra erinacei) infection in the Korean wild life, several species of wild animals were captured in Gangwon-do and examined for their status of infection with spargana. From February to December 2011, a total of 62 wild boars, 5 badgers, 1 weasel, 1 Siberian chipmunk, and 53 wild rodents were captured, and their whole muscles were examined with naked eyes for the presence of spargana worms. From the weasel and 1 wild boar, a total of 5 spargana specimens were extracted. The weasel was for the first time recorded as an intermediate or paratenic/transport host of S. erinacei in Korea, and both the weasel (Mustela sibirica manchurica) and wild boar (Sus scrofa) were added to the list of wild animals carrying spargana.
Animals ; *Mustelidae ; Republic of Korea ; Sparganosis/epidemiology/*veterinary ; *Sus scrofa ; Swine ; Swine Diseases/epidemiology/*parasitology

Trichinosis is a worldwide parasitic infection caused by ingesting an uncooked raw meat containing viable larvae of nematode Trichinella. Although most cases have been reported in Western countries, the incidence has decreased due to strict control of meat handlings and improved hygiene in these countries. In Korea, the first case of Trichinella spiralis was reported in a patient who ingested an uncooked badger. We have also experienced four cases of Trichinella spiralis infestation among family members who showed typical clinical manifestations and laboratory findings after ingesting raw wild swine meat, and herein report the finding.
Animals ; Eating* ; Humans ; Hygiene ; Incidence ; Korea ; Larva ; Meat* ; Mustelidae ; Swine* ; Trichinella ; Trichinella spiralis ; Trichinellosis*

Trichinosis is a worldwide parasitic infection caused by ingesting an uncooked raw meat containing viable larvae of nematode Trichinella. Although most cases have been reported in Western countries, the incidence has decreased due to strict control of meat handlings and improved hygiene in these countries. In Korea, the first case of Trichinella spiralis was reported in a patient who ingested an uncooked badger. We have also experienced four cases of Trichinella spiralis infestation among family members who showed typical clinical manifestations and laboratory findings after ingesting raw wild swine meat, and herein report the finding.
Animals ; Eating* ; Humans ; Hygiene ; Incidence ; Korea ; Larva ; Meat* ; Mustelidae ; Swine* ; Trichinella ; Trichinella spiralis ; Trichinellosis*

L-ascorbic acid (vitamin C) is one of the well-known anti-viral agents, especially to influenza virus. Since the in vivo anti-viral effect is still controversial, we investigated whether vitamin C could regulate influenza virus infection in vivo by using Gulo (-/-) mice, which cannot synthesize vitamin C like humans. First, we found that vitamin C-insufficient Gulo (-/-) mice expired within 1 week after intranasal inoculation of influenza virus (H3N2/Hongkong). Viral titers in the lung of vitamin C-insufficient Gulo (-/-) mice were definitely increased but production of anti-viral cytokine, interferon (IFN)-alpha/beta, was decreased. On the contrary, the infiltration of inflammatory cells into the lung and production of pro-inflammatory cytokines, tumor necrosis factor (TNF)-alpha and interleukin (IL)-alpha/beta, were increased in the lung. Taken together, vitamin C shows in vivo anti-viral immune responses at the early time of infection, especially against influenza virus, through increased production of IFN-alpha/beta.
Animals ; Ascorbic Acid ; Cytokines ; Humans ; Influenza A virus ; Influenza, Human ; Interferons ; Interleukins ; Lung ; Mice ; Mustelidae ; Orthomyxoviridae ; Tumor Necrosis Factor-alpha ; Vitamins

A chordoma is an uncommon tumor that originates from the remnants of the notochord and most commonly involves the cranial and caudal regions of the axial skeleton. Chordoma has been described in laboratory animals such as dogs, rats, minks, and ferrets. This report describes a case of a chordoma in the tail of a ferret. Grossly, a grayish-white, expansile, subcutaneous soft-tissue mass was observed in the tail. Histopathologically, the mass was a loosely placed, nodular, unencapsulated neoplasm within the dermis. In the mass, tumor lobules were intermingled with fibrous tissues. Fibrous tissues contained abundant extracellular basophilic material that was consistent with mucin. The tumor was composed of a close pack of adipocyte-like vacuolated cells (physaliferous cells). The cells were centrally or eccentrically located round nuclei and eosinophilic cytoplasm with large vacuoles. Immunohistologically, neoplastic cells were positive for vimentin and S-100 protein. Based on histopathologic findings and special staining characteristics, this case was diagnosed as chordoma.
Animals ; Animals, Laboratory ; Basophils ; Chordoma ; Cytoplasm ; Dermis ; Dogs ; Eosinophils ; Ferrets ; Mink ; Mucins ; Notochord ; Rats ; S100 Proteins ; Skeleton ; Tail ; Vacuoles ; Vimentin

Trichinosis is a worldwide parasitic infection developed after the ingestion of uncooked meat containing viable larvae of the nematode Trichinella spiralis. Fever, myalgia, periorbital edema and eosinophilia are characteristic features and most infections are mild and asymptomatic, but a few cases have a severe clinical course due to cardiac or cerebral complications. This parasitic infection is spread in nature among a large number of carnivorous animals, human being an incidental host. While the highest prevalence is in North America and Europe, some outbreaks of trichinosis have been reported in the areas of Southeast Asia, China and Japan recently, but it has not been reported in Korea yet. We experienced a case of trichinosis with typical clinical features and laboratory findings of trichinosis after eating a raw liver and blood of wild badger which was poached in Chi-ri mountain.
Animals ; Asia, Southeastern ; China ; Disease Outbreaks ; Eating* ; Edema ; Eosinophilia ; Europe ; Fever ; Humans ; Japan ; Korea ; Larva ; Liver ; Meat ; Mustelidae* ; Myalgia ; North America ; Prevalence ; Trichinella spiralis ; Trichinellosis*

OBJECTIVETo elucidate the characteristics of genetic variability and its relationship with prevalence, through sequencing and analysis of N gene among street rabies virus isolated from different hosts (homo sapiens, ferret badger, dog) in Zhejiang province.

METHODSSamples were screened and confirmed by direct fluorescence assay and reverse transcript PCR. Sequences were analyzed using bio-information software.

RESULTSEighteen street rabies virus strains were identified, including 2 from homo sapiens, 5 from ferret badger, and 11 from dog. Similarities of N gene and N protein were calculated to be 89.7%-100.0% and 98.4%-100.0% respectively. Mutations occurred in N gene were almost non-sense mutations. In addition,Data from phylogenetic analysis showed that all these strains could be classified into traditional genotype 1.

CONCLUSIONThe prevalence of rabies viruses among different hosts in Zhejiang province had certain regional properties. Rabies viruses isolated from the same kind of host or from the same/adjacent county/counties had the closest relationship. However, the characteristics of rabies virus prevalent in homo sapiens were somewhat complicated. In summary, the transmission of street rabies virus in Zhejiang province was from dogs to ferret badgers and homo sapiens, and the virus could circulate and cross-regional transmit among dogs and ferret badgers.

Animals ; China ; epidemiology ; DNA Mutational Analysis ; Dogs ; virology ; Humans ; Mustelidae ; virology ; RNA, Viral ; genetics ; Rabies ; epidemiology ; Rabies virus ; genetics ; isolation & purification ; Viral Envelope Proteins ; genetics

We are going to describe the female soboliphymid nematodes, which were recovered from the stomach of a Asian badger, Meles leucurus (Mammalia: Mustelidae), in Geochang-gun, Gyeongsangnam-do, Korea. In February 1998, we found 2 peculiar nematodes with a cup-like organ in the anterior end from the stomach of badger. Recovered worms were fixed with 10% formalin, cleared in glycerin-alcohol solution and observed under a light microscope with a micrometer. They were 34.46 (33.43–35.50) mm long by 2.13 mm at maximum width. Cephalic sucker cup-like, 3.34 (3.13–3.55) mm wide, 2.40 (2.25–2.55) mm long, with the oral aperture and meridionally striated on the buccal capsule. Oral aperture 2.38 mm in diameter. Circumoral membrane 0.41 (0.38–0.45) mm wide. Esophagus muscular, 4.81 (4.50–5.00) mm long by 0.80 (0.78–0.83) mm at maximum width. Vulva situated at 3.13 mm ventro-anterior level from the esophago-intestinal junction. Vagina anteriad, 3.38 mm long, making a canal from the uterus to the vulva opening. Uterus single, large. Tail 0.35 (0.33–0.38) mm long. Intrauterine eggs long elliptical, 0.058–0.065 (0.062) mm long and 0.030–0.033 (0.031) mm wide. Based on the some morphological characters and host-specificity, our specimens are nearly identical with S. baturini. Therefore, the present report describes S. baturini for the first time in Korea.
Animals ; Asian Continental Ancestry Group ; Eggs ; Esophagus ; Female ; Formaldehyde ; Gyeongsangnam-do ; Humans ; Korea ; Membranes ; Mustelidae ; Ovum ; Republic of Korea ; Stomach ; Tail ; Uterus ; Vagina ; Vulva