• 제목/요약/키워드: Korean anisakiasis

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Seroprevalence of Antibodies against Anisakis simplex Larvae among Health-Examined Residents in Three Hospitals of Southern Parts of Korea

  • Kim, Jung;Jo, Jin-Ok;Cho, Seon-Hee;Cho, Min-Kyoung;Yu, Hak-Sun;Cha, Hee-Jae;Ock, Mee-Sun
    • Parasites, Hosts and Diseases
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    • 제49권2호
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    • pp.139-144
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    • 2011
  • The present study was performed to estimate the seroprevalence of larval Anisakis simplex infection among the residents health-examined in 3 hospitals in southern parts of Korea. A total of 498 serum samples (1 serum per person) were collected in 3 hospitals in Susan Metropolitan city, Masan city, and Geoje city in Gyeongsangnam-do (Province) and were examined by IgE-ELISA and IgE-western blotting with larval A. simplex crude extract and excretory-secretory products (ESP). The prevalence of antibody positivity was 5.0% and 6.6% with ELISA against crude extracts and ESP, respectively. It was also revealed that infection occurred throughout all age groups and higher in females than in males. A specific protein band of 130 kDa was detected from 10 patients with western blot analysis against crude extract and ESP among those who showed positive results by ELISA. Our study showed for the first time the seroprevalence of anisakiasis in Korea. The allergen of 130 kDa can be a candidate for serologic diagnosis of anisakiasis.

남극해산 대구에서 물개회충(Pseudoterranova decipiens) 유충의 검출 (Recovery of Pseudoterranova decipiens (Anisakidae) larvae from codfish of the Antarctic Ocean)

  • 채종일;국상미
    • Parasites, Hosts and Diseases
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    • 제33권3호
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    • pp.231-234
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    • 1995
  • 한국해양연구소의 극지연구센터가 운영되고 있는 남극 기지 부근 남극해에서 대구(Notoaenia neglecta)를 잡아 조사한 결과 위와 간에서 선충류 유충이 발견되었다. 광학현미경 및 전자현미경적 관찰 결과 이들은 인체에 codworm anisakiasis를 일으킬 수 있는 물개회충(Pseudotewunon decipiens)의 제3기 유충으로 동정되었다 유충의 길이는 25.0-28.5 m였고, 폭은 0.6-0.8 mm 였다. 주사전자현미경 소견상 충체 앞부분에서 boring tooth가 뚜렷이 관찰되었고, 3개의 입술과 배설공이 존재하였다. 충체 끝부분에는 작지만 뚜렷한 mucron 1개가 관찰되었다. 충체 단면의 광학현미경적 소견에서는 ventriculus의 전방 부위에서 특징적으로 ventriculus, intestinal caecum 및 Renette cell이 동시에 절단되어 있는 것이 관찰되었다. 이상의 결과를 통해 남극해산 대구가 물 개회충의 제3기 유충에 감염되어 있음을 확인할 수 있었으며, 남극해산 대구를 날로 먹을 경우 codworm anisakiasis를 유발할 수 있으므로 주의가 요망되었다.

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Anisakid Larvae from Anchovies in the South Coast of Korea

  • Chang, Taehee;Jung, Bong-Kwang;Hong, Sooji;Shin, Hyejoo;Lee, Jeonggyu;Patarwut, Laddawan;Chai, Jong-Yil
    • Parasites, Hosts and Diseases
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    • 제57권6호
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    • pp.699-704
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    • 2019
  • Anisakiasis (anisakidosis) refers to a foodborne zoonosis caused by ingesting raw or undercooked marine fish or cephalopods infected with anisakid larvae. The present study was performed to investigate the prevalence of anisakid larvae in anchovies (Engraulis japonica) purchased from 2 local markets in Gyeongsangnam-do, the Republic of Korea (=Korea), during 2018-2019. Anchovies were transported to our laboratory and examined by pepsin-HCl artificial digestion technique followed by microscopic observations and molecular analyses. The overall prevalence of anisakid larvae was 19.5% (39/200), from which a total of 51 larvae (av. 1.3 larvae/infected anchovy) were recovered. Sequencing of the larvae targeting the ITS region, including ITS1, 5.8S rRNA, and ITS2 genes confirmed the species of larvae as Anisakis pegreffii (54.9%; 28/51), Hysterothylacium sinense (23.5%; 12/51), and Hysterothylacium aduncum (21.5%; 11/51). The results suggested that anchovies could be a potential source of human anisakiasis in Korea.

돼지의 Anisakis형충증(型蟲症)에 관(關)한 병리학적(病理學的) 연구(硏究) (Pathological Studies on the Anisakiasis in Swine)

  • 강문일;임봉호;이정길
    • 대한수의학회지
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    • 제21권1호
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    • pp.7-10
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    • 1981
  • During the studies on the esophagogastric ulcers in swine, Anisakis type larvae were found associated with stomach lesions. 1. Of the 1,531 pigs examined, 11(0.7%) were infested with the parasite in the stomach. 2. The parasite was identified as Anisakis type I larvae, according to the morphological characteristics. 3. On gross examination, the parasites were seen penetrating gastric mucosa, resulting in hemorrhagic ulcers. 4. Main histopathological features were edema, massive eosinophilic infiltrations around the parasite, necrosis and perivascular eosinophilic accumulations in the submucosa.

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돼지 Anisakis증(症)의 자연(自然) 발생례(發生例) (Natural Cases of Pig-Anisakiasis)

  • 문무홍;곽수동
    • 대한수의학회지
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    • 제21권1호
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    • pp.45-50
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    • 1981
  • In the survey on the pig-stomach worms of the abattoir pigs in Gyeongbug province, some unusual nematodes were found by gross and microscopic inspection to the pig-stomach. The results obtained in the survey and identification were summarized as follows. 1. A natural infection of Anisakis type larvae in the pig gastric wall was newly confirmed in korea and in all cases, the larvae were identified as Anisakis type 1 (Berland, 1961). 2. A chronic granulomatous lesion with small lymphocytes, neutrophils and eosinophils was appeared in the gastric wall penetrated by the larvae. 3. Of total 318 pigs, 9 pigs were infected with the larvae and in each stomach, only one or two worms were detected from the abattoir pigs. 4. Ascarops strongylina was found as one percent.

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실험적 토끼 아니사키스증에서의 조직학적 병변과 혈청 항체가의 경시적 변동 양상 (Histopathological and Serological Observations on Experimental Anisakiasis of Rabbits)

  • 홍성태;이손형
    • Parasites, Hosts and Diseases
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    • 제25권2호
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    • pp.168-180
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    • 1987
  • 아니사키스중에서 조직병리학적 병변과 혈청학적 반응의 시간 경과에 따른 변동 양상을 관찰하고자 이 실험을 실시하였다. 조기 와 아나고 내 잔에서 구한 멸룬연상 type I 유충을 체중 3kg 내외의 집토끼에 30마리씩 경구 투여하고, 감염 전과 감염 후 3, 13, 20, 30, 60, 90, 150일에 채 늴하여 혈청을 냉동 보관 하였다. 동시에 13, 20, 30, 60, 90, 150일에 1~3마리 씩 도살하여 위부터 하행결장까지 육안으로 검사하여 아니사키스 충체의 유무를 조사하고, 충체가 감염된 부위를 선택하여 조직학적으로 관찰하였다. 또한 냉동 보관한 혈청을 이용한 micro-ELISA를 시행하여 항체가의 변동을 관찰하였다. 그 결과를 요약하면 다음과 같다. 1. 육안 검사에서 아니사키스 유충은 위에서 57.7%가 검출되고, 그 이외에 대망(mentum), 잗, 장간막, 복막등에서도 검출되 었다. 감염기 간에 따른 충체의 검출율이나 검출부위의 차이는 인정 할 수 없었다. 전체 충체검출율은 18.6%이고 살아서 움직이는 충체는 하나도 없었다. 2. 조직병리학적으로 관찰한 바, 감염 후 13일에는 대부분의 충체가 내부구조를 온전하게 유지하고 있으면서, 충체 주위에는 농양이 형성되어 있어 감염된 위장관벽이 2~3배 두꺼워져 있었다. 충체 주변에 섬유성 삼출액이 염증세포와 혼합되어 있고 그 주위를 조직세포(histiocytes)가 층을 이루며 둘러싸고 다시 주위의 병소 대부분을 수많은 염증세포(중성구, 호산구, 림프구등)와 섬유아세포가 차지하고 있었다. 감염 후 20일과 30일에는 삼출액이 차츰 줄고, 섬유소가 증식하는 육아조직으로 전환되었다. 충체는 20일 관찰된 것부터 괴사에 빠지고, 30일에는 조직구가 직접 충체를 둘러싸며 숙주세포가 충체를 침윤하는 것이 뚜렷이 관찰되었다. 또 30일부터 칼슘이 침착된 충체가 관찰되었다. 감염 후 90일과 150일에는 칼슘화된 충체만이 관찰되며 충체주위는 섬유조직으로 대체되고 소수의 염증세포 만이 모여 있었다. 3. ELISA를 이용하여 혈청내 Is G항체가의 측정결과 감염 후 기간에 따른 카 군별 흡광도(O.D.)의 평균(${\pm}표준편차$)치가 대조군 0.165(${\pm}0.144$), 3일 0.257(${\pm}0.194$), 13일 0.448(${\pm}0.257$), 20일 0.662(${\pm}0.311$), 30일 1.113(${\pm}0.336$), 60일 0.993(${\pm}0.331$), 90일 0.740(${\pm}0.185$), 150일에 0.376이 었다. 이상의 결과로 미루어 토끼에 감염된 아니사키스는 감염 1주 경에 죽고, 2주 정도 까지는 형태학적 구조를 유지하지만, 20일 이후에는 괴사되며, 30일 이후에는 숙주 세포에 의하여 파괴 흡수되거나 석회화되는 과정을 겪고, 90일 이후에는 석회화된 것 이외에는 거의 흡수되어 관찰되지 않는다고 할 수 있겠다. 충체가 감염된 후 죽어서 흡수되기 시작하는 30일 정도의 기간동안 집중적으로 충체의 항원이 방출되어 항체가가 위와 같은 변화양상을 보인다고 판단된다. 감염 150일에는 항체가가 뚜렷하게 감소한 상태이므로 감염 후 20~90일에는 ELISA가 유용한 혈청학적 진단법이 될 수 있을 것으로 보인다. 실제로 진단에 적용하기 위해서는 교차 반응등에 관하여 더 연구가 진행되어야 할 것이다.

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Phylogenetic and phylogeographic analyses of Anisakis simplex sensu stricto (Nematoda: Anisakidae) from the common minke whale in Korean waters

  • Sunmin Kim;Bom Sok Lee;Seongjun Choe
    • Parasites, Hosts and Diseases
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    • 제61권3호
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    • pp.240-250
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    • 2023
  • The genus Anisakis is among the most significant parasites to public health, as it causes anisakiasis, a parasitic infection in humans resulting from consuming raw or undercooked seafood. Although the infection status of Anisakis in second intermediate hosts, such as marine fishes and cephalopods, and humans have been severally reported in Korea, no information about the definitive host in Korean waters is available. In 2014, 2 adult gastric nematodes were collected from a common minke whale (Balaenoptera acutorostrata) found in the East Sea, Korea. These worms were identified as A. simplex sensu stricto (s.s.) by comparing the mitochondrial COX2 marker with previously deposited sequences. Phylogenetic and phylogeographic analyses of A. simplex (s.s.) worldwide revealed 2 distinct populations: the Pacific population and the European waters population. This is the first report on adult Anisakis and its definitive host species in Korea. Further studies on Anisakis infection in other cetacean species and marine mammals in Korean seas are warranted.

Molecular Analysis of Anisakis Type I Larvae in Marine Fish from Three Different Sea Areas in Korea

  • Sohn, Woon-Mok;Kang, Jung-Mi;Na, Byoung-Kuk
    • Parasites, Hosts and Diseases
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    • 제52권4호
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    • pp.383-389
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    • 2014
  • Anisakiasis, a human infection of Anisakis L3 larvae, is one of the common foodborne parasitic diseases in Korea. Studies on the identification of anisakid larvae have been performed in the country, but most of them have been focused on morphological identification of the larvae. In this study, we analyzed the molecular characteristics of 174 Anisakis type I larvae collected from 10 species of fish caught in 3 different sea areas in Korea. PCR-RFLP and sequence analyses of rDNA ITS and mtDNA cox1 revealed that the larvae showed interesting distribution patterns depending on fish species and geographical locations. Anisakis pegreffii was predominant in fish from the Yellow Sea and the South Sea. Meanwhile, both A. pegreffii and A. simplex sensu stricto (A. simplex s.str.) larvae were identified in fish from the East Sea, depending on fish species infected. These results suggested that A. pegreffii was primarily distributed in a diverse species of fish in 3 sea areas around Korea, but A. simplex s.str. was dominantly identified in Oncorhynchus spp. in the East Sea.

An Overview of Fish-borne Nematodiases among Returned Travelers for Recent 25 Years- Unexpected Diseases Sometimes Far Away from the Origin

  • Eiras, Jorge Costa;Pavanelli, Gilberto Cezar;Takemoto, Ricardo Massato;Nawa, Yukifumi
    • Parasites, Hosts and Diseases
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    • 제56권3호
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    • pp.215-227
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    • 2018
  • Along with globalization of traveling and trading, fish-borne nematodiases seems to be increasing in number. However, apart from occasional and sporadic case reports or mini-reviews of particular diseases in particular countries, an overview of fish-borne nematodiasis among travelers have never been performed. In this review, we gathered fish-borne nematodiasis among travelers for recent 25 years by an extensive global literature survey using appropriate keywords, e.g. travelers diseases, human infection, anisakiasis, gnathostomiasis, capillariasis, sushi, sashimi, ceviche, Gnathostoma, Pseudoterranova, Anisakis, Capillaria, etc., as well as various combinations of these key words. The Internet search engines PubMed, Medline, Google and Googler Scholar were used as much as possible, and the references of every paper were checked in order to identify useful and reliable publications. The results showed unexpectedly high incidence of gnathostomiasis and low incidence of anisakidosis. The different incidence values of the infection with several fish-borne zoonotic nematode species are discussed, as well as some epidemiological aspects of the infections. The difficulties of differential diagnosis in non-endemic countries are emphasized. It is concluded that travelers must avoid risky behaviors which can lead to infection and that physicians and health authorities must advice travelers on the risks of eating behaviors during travel.

Survival of Anisakis species larvae of chub mackerel (Scomber japonicus) in different kinds of condiments

  • Nam, U-Hwa;Lee, Seo-Young;Lee, Ji-Hyee;Kim, Jeong-Ho
    • 한국어병학회지
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    • 제34권2호
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    • pp.249-253
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    • 2021
  • Anisakiasis is a well-known zoonosis caused by ingestion of raw or thermally undercooked seafood product contaminated with live Anisakis nematode third stage larvae (L3). Several traditional processing techniques have been used to kill or remove the Anisakis larvae worldwide, but thermal processing or deep freezing are the most effective treatments to kill the Anisakis larvae. In this study, we investigated the survival of Anisakis larvae in several condiments (soy bean sauce, wasabi, vinegar, red pepper paste) commonly consumed when eating raw fish in Korea. We also examined several different media (NaCl solution, absolute alcohol, soju) to investigate their larvicidal effect. When directly exposed to various condiments, the most effective larvicidal effect was observed in the mixture of wasabi and soy bean sauce. When exposed to different NaCl solutions, the larvicidal ability became more effective as the concentration increased, but did not show 100% killing effect. In soju, the L3 were killed under less than 4 hr. We observed the larvicidal effects of several condiments in this study, but these results are thought to be carefully interpreted for actual use because all the condiments in this study showed the effect in hours and in general, the L3 are exposed to these condiments only for seconds before ingested in real situation.