Heterophyes heterophyes nocens

有害異形吸虫

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• 1. 腸管寄生虫症 intestinal flukes

English Journal

• Infection status of estuarine fish and oysters with intestinal fluke metacercariae in Muan-gun, Jeollanam-do, Korea.

• Cho SH1, Kim IS, Hwang EJ, Kim TS, Na BK, Sohn WM.Author information 1Division of Malaria and Parasitic Diseases, National Institute of Health, Centers for Disease Control and Prevention, Osong 363-951, Korea.AbstractThe source of human infection with intestinal flukes was surveyed in estuarine fishes, including the dotted gizzard shad, common sea bass, common blackish goby, redlip mullet, black sea bream, and oyster collected from Muan-gun, Jeollanam-do, Korea during August and September 2007. Collected fishes and oysters were artificially digested in pepsin-HCl solution and examined under a stereomicroscope. In 36 shads (Konosirus punctatus) and 20 basses (Lateolabrax japonicus) examined, Heterophyopsis continua metacercariae were found in 58.3% and 100%, and their average numbers were 12.0 and 6.3 per infected fish, respectively. In 34 gobies (Acanthogobius flavimanus) examined, metacercariae of H. continua were detected in 79.4%, Stictodora lari in 97.1%, and Acanthotrema felis in 92.1%, and their average numbers were 45.8, 189.3, and 235.3 per infected fish, respectively. In 37 redlip mullets (Chelon haematocheilus), Heterophyes nocens metacercariae were found in 56.8%, Pygidiopsis summa in 94.6%, and Stictodora fuscata in 45.9%, and the average metacercarial densities were 17.4, 31.3, and 35.1 per infected fish, respectively. In 30 black sea breams (Acanthopagrus schlegeli) and 45 oysters (Crassostrea gigas) examined, no metacercariae were detected. From the above results, it has been confirmed that the dotted gizzard shad, common sea bass, common blackish goby, and redlip mullet from Muan-gun, Jeollanam-do, Korea are infected with the metacercariae of heterophyid flukes.
• The Korean journal of parasitology.Korean J Parasitol.2012 Sep;50(3):215-20. doi: 10.3347/kjp.2012.50.3.215. Epub 2012 Aug 13.
• The source of human infection with intestinal flukes was surveyed in estuarine fishes, including the dotted gizzard shad, common sea bass, common blackish goby, redlip mullet, black sea bream, and oyster collected from Muan-gun, Jeollanam-do, Korea during August and September 2007. Collected fishes
• PMID 22949748

• Comparative morphology of minute intestinal fluke eggs that can occur in human stools in the republic of Korea.

• Lee JJ1, Jung BK, Lim H, Lee MY, Choi SY, Shin EH, Chai JY.Author information 1Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul National University Medical Research Center, Seoul, Korea.AbstractThe egg morphology of minute intestinal flukes (MIF) that can occur as human infections in the Republic of Korea, i.e., Metagonimus yokogawai, M. miyatai, M. takahashii, Heterophyes nocens, Heterophyopsis continua, Stellantchasmus falcatus, Stictodora fuscata, Pygidiopsis summa, and Gymnophalloides seoi, was studied in comparison with Clonorchis sinensis. The adult worms were obtained from residents of endemic areas, and their intrauterine eggs were studied and measured using light microscopy; the length, width, length-width ratio (LWR), and Faust-Meleney index (FMI). Several specimens were processed for scanning electron microscopy (SEM), and before gold-coating, the uterine portion of each fluke was etched with a sharp pin in order to expose the eggs. The MIF eggs were ovoid, pyriform, or elliptical with a size range of 21-35×12-21 µm. S. fuscata eggs revealed the highest FMI (largest in the area) and lowest LWR, whereas P. summa eggs showed the lowest FMI and medium LWR. SEM revealed that G. seoi and S. fuscata had remarkably clean shell surface lacking the muskmelon-like structure which is prominent in C. sinensis eggs. In Metagonimus spp., H. continua, H. nocens, and S. falcatus eggs, minute surface ridges were recognizable though less prominent compared with C. sinensis. On the surface of P. summa eggs, thread-like curly structures were characteristically seen. The results revealed that important differential keys for MIF eggs include the length, width, area (FMI), shape of the eggs, and the extent of the muskmelon-like structure or ridges on their shell surface and operculum.
• The Korean journal of parasitology.Korean J Parasitol.2012 Sep;50(3):207-13. doi: 10.3347/kjp.2012.50.3.207. Epub 2012 Aug 13.
• The egg morphology of minute intestinal flukes (MIF) that can occur as human infections in the Republic of Korea, i.e., Metagonimus yokogawai, M. miyatai, M. takahashii, Heterophyes nocens, Heterophyopsis continua, Stellantchasmus falcatus, Stictodora fuscata, Pygidiopsis summa, and Gymnophalloides
• PMID 22949747

• Epidemiological survey on the infection of intestinal flukes in residents of Muan-gun, Jeollanam-do, the Republic of Korea.

• Cho SH1, Cho PY, Lee DM, Kim TS, Kim IS, Hwang EJ, Na BK, Sohn WM.Author information 1National Institute of Health, Centers for Disease Control and Prevention, Seoul 122-701, Korea.AbstractInfection status of intestinal flukes was investigated in residents of Muan-gun, Jeollanam-do, the Republic of Korea. Total 1,257 fecal samples of residents were examined by formalin-ether sedimentation technique and Kato-Katz thick smear method. Helminth eggs were detected from 95 (7.6%) residents, and eggs of heterophyid flukes and Clonorchis sinensis were found from 62 (4.9%) and 40 (3.2%) cases, respectively. The larger heterophyid eggs, somewhat dark-brown in color and 37.7 x 21.5 microm in average size, and found in 32 (2.6%) out of 62 egg positive cases of heterophyid flukes. To confirm the adult flukes, we performed worm recovery from 12 cases after praziquantel treatment and purgation with MgSO(4). A total of 1,281 adult flukes, assigned to 7 species, were recovered from 9 cooperative cases. Heterophyes nocens (total 981 specimens) was collected from 9 cases, Stictodora fuscata (80) from 7, Gymnophalloides seoi (75) from 5, Pygidiopsis summa (140) from 3, Stellantchasmus falcatus (3) from 2, and Stictodora lari and Acanthotrema felis (each 1 worm) from 1 case each. The intrauterine eggs of S. fuscata collected from the recovered worm were identical with the larger heterophyid eggs detected in the stool examination. By the present study, it was confirmed that A. felis is a new intestinal fluke infecting humans, and residents in Muan-gun, Jeollanam-do are infected with variable species of intestinal trematodes.
• The Korean journal of parasitology.Korean J Parasitol.2010 Jun;48(2):133-8. doi: 10.3347/kjp.2010.48.2.133. Epub 2010 Jun 17.
• Infection status of intestinal flukes was investigated in residents of Muan-gun, Jeollanam-do, the Republic of Korea. Total 1,257 fecal samples of residents were examined by formalin-ether sedimentation technique and Kato-Katz thick smear method. Helminth eggs were detected from 95 (7.6%) residents,
• PMID 20585529

Japanese Journal

• 静岡県三ケ日町における有害異形吸虫の人体感染

• 日本熱帯医学会雑誌 30(3), 301-304, 2002-09-15
• NAID 10011518575

• An Endemic Human Infection with Heterophyes nocens Onji et Nishio 1916 at Mikkabi-cho, Shizuoka, Japan.

• Japanese Journal of Tropical Medicine and Hygiene 30(3), 301-304, 2002
• NAID 130003795839

• フィラリアおよび糞線虫症と成人T細胞白血病ウイルス感染 : 旧フィラリア流行地・熊本県南部の過疎地における調査

• 熱帯医学 Tropical medicine 28(4), 285-291, 1986-12-27
• NAID 120000919392

Related Links

• ～有害異形吸虫～ - 寄生虫

[学名] Heterophyes heterophyes nocens [症状] 有害と冠しているが、まぁ少数感染では症例がない。 ところで、多数寄生されると腹痛・下痢等が起こる。 体内で虫卵が産み出されると、リンパ流・血流にのって臓器へはいり、これが栓塞を ...

• A new endemic focus of Heterophyes nocens and other ...

... (Heterophyes nocens; 15 people, Pygidiopsis summa; 3, Metagonimus sp.; 4, Clonorchis sinensis; 7, Gymnophalloides seoi; 6) and/or protozoa (Entamoeba coli; 3). Among intestinal trematode egg positive cases, 17 were ...

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Heterophyes heterophyes nocens

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異形吸虫

• 終宿主：哺乳類、鳥類
• ヒト寄生部位：腸管内(小腸中部粘膜)
• 分布：九州、瀬戸内沿岸地域、千葉房総
• 症状：少数で無症。多数寄生で消化器障害(下痢、腹痛)
• 寄生魚介類：ボラ、メナダ、ハゼ、シマイサキなどの汽水魚
• 感染経路：経口的(汽水魚の摂取)