During May-July, 1978 a survey on the prevalence of C. hepatica among house rat(Rattus norvegicus Erxl.) and wild mice (Mus musailus molossinus and Microtus mandarinus) in two districts in Seoul was carried out. Approximately 38 percent of 1,000 house rats examined were infected. Rat population as an established group in Ahyundong, neighbouring the city, revealed 39.2 percent of infection among 660 house rats, and that as newly formed group in Shinrimdong, a developing residential quarter on the southern outskirts of Seoul showed 35.9 percent among 340 rats. Infection rate of females and males was 38.9 percent and 37.2 percent respectively. Differences of infection rates by locality and sex were not statistically significant. It was very interesting that none of 64 wild mice were infected with this parasite in both districts. Some probable factors which are related on C. hepatica infection among rats were discussed briefly.
parasitology-helminth-nematoda ; Capillaria hepatica ; prevalence ; epidemiology ; rat ; Rattus norvegicus Erxl.

No significant difference was noted in canine hookworm infection due to hormone influence between the control group and the gonadectomized rats which were sacrificed 17 days after gonadectomy and 7 days after the infection. However in the rats which were infected 20 days after oophorectomy a significant difference was thought to be present in this group(176 +- 12.9 larvae/rat) compared with the control group (138 +- 21.2 larvae/rat). On the other hand, in the castrated group the number of larvae (138 +- 37.1 larvae/rat) was less than that in the control group (208 +- 43.4 larvae/rat). In the estrogen-injected male and female groups, there were no difference compared to the control, but the testosterone-injected groups of males and females showed more susceptibility to infection by A. caninum than in the control group. The Capillaria hepatica infection to the castracted host showed no significant difference between the gonadectomized and the control group. (oophorectomy; 214 +- 28.0), castration; 250 +- 36.5 and control; 191 +- 58.2 and 270 +- 30.1 adults/rat). Concerning the influence of the host's sex hormone on egg production of canine hookworm, there was a significantly decreased egg production in castrated dogs(6,578 +- 664.0 egg per gram) compared to the control dogs(9,711 +- 1,322.3 egg per gram). The same results were observed in vitro test. In the host, the susceptibility to hookworm infection was reduced in castrated rats, while oophorectomy group had a little or no effect. In the favorable or unfavorable hosts, testosterone gave the tendency of increasing susceptibility of the host to infection, while estrogen did a little or no effect.
parasitology-helminth-nematoda ; hookworm ; estrogen ; testosterone ; rat ; dog Ancylostoma caninum ; Capillaria hepatica ; gonadectomy ; estrogen ; testosterone

A survey for nematode and cestode parasites of rodents in Korea has been carried out at the areas of Chulwon, Kumwha, Pochon, Paju and Chungpyong, Kyunggi-Do. A total of 300 rodents of seven species was examined, comprising of 219 A. agrarius, 33 R. norvegicus, 8 R. alexandrinus, 14 Mus musculus yamashinai, Microtus fortis pellceus, 21 Crocidura russula and a Cricetulus trition nester. The following fifteen species belonging to thirteen genera were identified: NEMATODA: Heterakis spumosa, Syphacia obvelata, Nippostrongylus muris, Protospirura muris, Capillaria hepatica, Capillaria sp., Heligmosomum sp., Heligmosomoides sp., Rictularia sp. and Gongylonema sp. CESTODA: Hymenolepis nana, Hymenolepis diminuta, Raillietina coreensis, Paranoplocephala sp. and Cysticercus fasciolaris(the larva of Taenia taeniaeformis).
parasitology-helminth-nematoda-cestoda ; Heterakis spumosa ; Syphacia obvelata ; Nippostrongylus muris ; Protospirura muris ; Capillaria hepatica ; Capillaria sp. ; Heligmosomum sp. ; Cysticercus fasciolaris ; Taenia taeniaeformis ; epidemiology ; rodent

An investigation of the helminth parasites of house rat R. norvegicus Erxl. in Seoul has been carried on four years. A total of 325 rat was examined. Ten species of helminths were considered, of which 4 species were recored for the first time from Korea. The adult worm of Capillaria hepatica, the most common parasite of house rats in Seoul, was observed experimentally, and provided a more complete description of this worm.
parasitology ; epidemiology ; helminth ; trematoda ; nematoda ; cestoda ; Echinostoma hortense ; Fibricola seoulensis ; Taenia taeniaformis, Hymenolepis nana ; Hymenolepis diminuta ; Heterakis spumosa ; Syphacia obvelata ; Nippostrongylus muris ; Trichosomoides crassicauda ; Capillaria hepatica

Helminthic zoonoses are of significant importance to the public health and to the socioeconomic consequences especially in lost-meat, animal products and animal labor. For past several decades in Korea, it has been recognized that endoparasitic infections among domestic animals are extremely common and many of the helminth parasites of man have been acquired from, or are shared with domestic animals. However, there was no survey of a nationwide scale on the prevalence of animal helminthiasis; and control measures are also not satisfactory. Furthermore, because of the remarkable increase in the demand, number of domestic animals and pets is rapidly increasing in these days. Therefore, an extensive study on zoonotic helminths was carried out from July 1980 throughout August 1981 to understand the present status and parasite-host relationship from the epidemiological viewpoont. A total of 13,685 fecal specimens of cattles, sheeps, pigs, dogs and cats was collected from 26 localities in the country. The specimens were examined by formalin-ether centrifugal sedimentation technique. The results are summarized as follows: Of 13,685 specimens examined, 9,808(71.7 percent) were positive for helminth parasites. The positive rates were 99.0 percent in cattles, 86.5 percent on sheeps, 85.4 percent in pigs, 35.4 percent in dogs, 15.1 percent in cats. Single infection showed the highest rate (60.0 percent), and double infection(27.5 percent), triple(8.1 percent), quadruple(2.8 percent), quintuple(1.5 percent) and hexad(0.1 percent) were in decreasing order. In the present study, 18 species zoonotic helminths were found: 11 nematodes, 6 trematodes and 1 cestode. According to province, Cheju revealed the highest rate 84.8 percent, then Kyungnam 77.5 percent, Jeonnam 75.6 percent, Jeonpuk 75.4 percent, Kyonggi 75.2 percent, Chungnam 71.7 percent, Chungpuk 70.6 percent and Kangwon 64.2 percent were in decreasing order and Busan and Seoul showed 70.4 percent and 58.1 percent, respectively. Rural area showed slightly higher rate (74.7 percent) than urban area (68.5 percent), and rates of mountainous area (70.4 percent) and plain area (71.1 percent) are very similar. According to animal, helminths species and positive rates appeared in: Cattles: 6 nematodes and 3 trematodes; Strongyles 26.4 percent, Neoascaris vitulorum 24.1 percent, Trichuris ovis 12.0 percent, Nematodirus sp. 6.3 percent, Srongyloides papillosus 5.1 percent, Capillaria bovis 0.02 percent, Paramphistomum sp. 41.5 percent, Fasciola hepatica 33.2 percent and Eurytrema pancreaticum 29.7 percent. Sheeps: 3 nematodes and 2 trematodes: Strongyles 33.0 percent, S. papillosus 26.9 percent, Nematodirus sp. 14.6 percent, F. hepatica 31.7 percent and E. pancreaticum 19.6 percent. Pigs: 5 nematodes and 2 trematodes: Strongyles 43.1 percent, Ascaris suum 29.0 percent, Metastrongylus apri 20.3 percent, Trichuris suis 14.0 percent, Strongyloides ransomi 12.1 percent, Clonorchis sinensis 1.4 percent and Paragonimus westermani 0.9 percent, Dogs: 4 nematodes and 3 trematodes and 1 cestode: Toxocara canis 14.4 percent, Trichuris vulpis 9.5 percent, Ancylostoma caninum 8.0 percent, Toxascaris leonina 4.0 percent, C. sinensis 2.4 percent, Metagonimus yokogawai 1.3 percent, P. westermani 0.8 percent and Spirometra sp. 0.9 percent, Cats: 2 nematodes, and 3 trematodes and 1 cestode: Toxocara cati 7.7 percent, Ancylostoma tubaeforme 3.1 percent, C. sinensis 1.9 percent, P. westermani 1.4 percent, M. yokogawai 1.2 percent and Spirometra sp. 0.7 percent.
parasitology-helminth-nematoda-trematoda-cestoda ; cattle ; sheep ; pig ; dog ; cat ; epidemiology ; zoonosis ; Fasciola hepatica ; Eurytrema pancreaticum ; Paramphsitomum sp. ; Neoascaris vitulorum ; Trichuris ovis ; Strongyloides papillosus ; Nematodirus sp. ; Capillaria bovis ; Clonorchis sinensis ; Paragonimus westermani ; Ascaris suum ; Trichuris suis ; Strongyloides ransomi ; Metastrongylus apri ; Spirometra sp. ; Metagonimus yokogawai ; Toxocara canis ; Toxocara leonina ; Ancylostoma caninum ; Trichuris vulpis ; Ancylostoma tubaeforme ; Strongyles

Many new parasitic infections have emerged in Korea, with >35 new species appearing since the 1980s. Among them, Capillaria species are unique for contributing to morbidity in many countries as well as in Korea. Since the first reported case of a 41-year-old male patient diagnosed with intestinal capillariasis in 1991, a total of six cases have been reported thus far. In this case report, we present another imported case of intestinal capillariasis in Korea, in which a 42-year-old male patient presented with intractable diarrhea and weight loss. The diagnosis was confirmed by biopsy of the ileum. The pathognomonic radiographic presentation of a ribbon-like appearance in a small bowel series was crucial in raising an early suspicion of capillariasis and in deciding to perform diagnostic biopsy.
Adult ; Albendazole ; Biopsy* ; Capillaria ; Colonoscopy ; Diagnosis ; Diarrhea ; Humans ; Ileum ; Intestine, Small ; Korea ; Male ; Weight Loss

Shahr-e Sukhteh (meaning burnt city in Persian) in Iran is an archeological site dated back to around 3,200-1,800 BC. It is located in Sistan and Baluchistan Province of Iran and known as the junction of Bronze Age trade routes crossing the Iranian plateau. It was appointed as current study area for paleoparasitological investigations. Excavations at this site have revealed various archeological materials since 1967. In the present study, sheep and carnivore coprolites excavated from this site were analyzed by means of rehydration technique using TSP solution for finding helminth eggs. Dicrocoelium dendriticum, Capillaria sp., and Taenia sp. eggs were identified, while some other objects similar to Anoplocephalidae and Toxocara spp. eggs were also retrieved from the samples but their measured parameters did not match those of these species. The present paper illustrates the first paleoparasitological findings of Bronze Age in eastern Iran supporting the economic activities, peopling, and communication as well as the appropriate condition for zoonotic helminthiasis life cycle in Shahr-e Sukhteh archeological site.
Animals* ; Capillaria ; Dicrocoelium ; Eggs ; Feces* ; Fluid Therapy ; Helminthiasis ; Helminths ; Iran* ; Life Cycle Stages ; Ovum ; Sheep ; Taenia ; Toxocara

No abstract available.
Adult ; Animals ; *Capillaria ; Diagnostic Errors ; Dirofilariasis/*diagnosis ; Enoplida Infections/*diagnosis ; Humans ; Korea ; Liver/*parasitology ; Liver Diseases, Parasitic/*diagnosis ; Male

Feline parasites were investigated in the area of Suwon in Korea from September to October, 2003. Wild cat had spread to zoonotic parasites, these parasites could cause infection with a person. People have a lot of interest in parasite infection of wild cat. This article reviews rate of infection of a parasites and kind of a parasite of wild cats. We will report the critical characteristic features of parasites to a better understanding of the disease. The incidence rates of Toxocara cati, Trichuris felis, Ancylostoma braziliense and Capillaria sp were 37.0, 4.3, 1.1 and 1.1% in nematodes. Those of Taenia taeniaformis and Opisthorchis sp were 2.2 and 1.1% in cestode and trematode. Those of Isospora felis, Toxoplasma gondii, and Sarcocystis sp were 8.7, 9.8, and 2.2% in protozoa. Almost of these were zoonotic parasites without Isospora felis.
Ancylostoma ; Animals ; Capillaria ; Cats ; Cestoda ; Felis ; Humans ; Incidence ; Isospora ; Korea ; Opisthorchis ; Parasites ; Prevalence ; Sarcocystis ; Taenia ; Toxocara ; Toxoplasma ; Trichuris

This study reports the first case of Capillaria hepatica infection in a nutria in Korea. Ten nutrias, captured near the Nakdong River, were submitted to our laboratory for necropsy. White-yellowish nodules were found in the liver of 1 of the nutrias at necropsy. Histologically, the lesions were granulomatous, and infiltrations of lipid-laden macrophages, eosinophils, and several multinucleated giant cells were observed. The lesions consisted of numerous eggs and necrotic hepatocytes. The eggs were lemon-shaped and had polar plugs at the ends of both long sides. The eggs were morphologically identified as those of C. hepatica. Worldwide, C. hepatica infection in nutrias is very rare. Nutrias are a kind of livestock, as well as wildlife; therefore, an epidemiological study for parasitic infections needs to be conducted.
Animals ; Capillaria/*isolation & purification ; Enoplida Infections/epidemiology/parasitology/*veterinary ; Female ; Male ; Republic of Korea/epidemiology ; Rodent Diseases/*parasitology ; Rodentia