Morphology of Anisakine Larvae

Ishii, Y.; Fujino, Takahiro; Weerasooriya, Mirani V.

doi:10.1007/978-4-431-68290-5_4

Cited by 14 publications

(11 citation statements)

References 10 publications

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“…The morphometric characteristics of the recovered larva corresponded to a fourth stage of P. decipiens 4 and it is the first report of this larval stage in a human case in Chile.…”

Section: Infecciones Por Nematodos Anisakiasismentioning

confidence: 62%

“…Human infections produced by larval stages of P. decipiens are commonly named anisakiasis in the broad sense 5 , codworm anisakiasis 12 or Pseudoterranovosis according to standardized nomenclature of animal parasitic diseases 6 . Although third or fourth stage larvae of anisakid worms can produce human infections, the latter are only rarely found 4,5 .…”

Section: Infecciones Por Nematodos Anisakiasismentioning

confidence: 99%

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Human case of gastric infection by a fourth larval stage of Pseudoterranova decipiens (Nematoda, Anisakidae)

1997

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Only three cases of human infection by anisakid nematodes have been reported in Chile since 1976. In the present case, an anisakid worm, identified as a fourth-stage Pseudoterranova decipiens larva, was removed with a gastroendoscopic biopsy clipper from the stomach of a 45 year-old man from southern Chile. The patient, who presented acute epigastric pain and a continuous sensation of having an empty stomach, reported having eaten smoked fish. The worm was fixed in 70% ethanol and cleaned in lactophenol for morphological study. The morphometric characteristics of the worm are described and drawn. Anisakid larvae in fish flesh can be killed by freezing or cooking.

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“…The morphometric characteristics of the recovered larva corresponded to a fourth stage of P. decipiens 4 and it is the first report of this larval stage in a human case in Chile.…”

Section: Infecciones Por Nematodos Anisakiasismentioning

confidence: 62%

Section: Infecciones Por Nematodos Anisakiasismentioning

confidence: 99%

Human case of gastric infection by a fourth larval stage of Pseudoterranova decipiens (Nematoda, Anisakidae)

1997

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“…Infective third-stage larvae can moult to the fourth inside humans (Ishii et al 1989) as it has been described for A. simplex. In the Table data of the seven cases of infection by P. decipiens are summarised.…”

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confidence: 89%

Human infection by Pseudoterranova decipiens (Nematoda, Anisakidae) in Chile: report of seven cases

Mercado

Torres

Muñoz

et al. 2001

Mem. Inst. Oswaldo Cruz

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“…The end of this structure had a tiny hook. On the basis of its morphological features and according to the description (Weerasooriya et al 1986, Ishii et al 1989, the parasite was identified as a fourth-stage larva of A. simplex.…”

Section: Resultsmentioning

confidence: 99%

“…The larvae was identified by its morphology (Weerasooriya et al 1986, Ishii et al 1989, as the fourth larval stage of A. simplex, by the absence of a cuticular tooth, as seen by optical and electron microscopy ( Fig. 2), and by the presence of a rugose protuberance in the place of the mucron (Fig.…”

Section: Resultsmentioning

confidence: 99%

Acute intestinal anisakiasis in Spain: a fourth-stage Anisakis simplex larva

Rosales

Mascaró

Fernandez

et al. 1999

Mem. Inst. Oswaldo Cruz

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A case of acute intestinal anisakiasis has been reported; a nematode larva being found in the submucosa of the ileum of a woman in Jaén (Spain). The source of infection was the ingestion of raw MATERIALS AND METHODSWe have studied a new case of acute intestinal anisakiasis in Spain. On 28 November 1998, a 46-year-old Spanish woman, lifelong resident of Jaén, was admitted to the emergency room at the Hospital Ciudad de Jaén, where her clinical, radiological and analytical report was compatible with acute appendicitis. She had had during two days acute abdominal pain, diarrhea, meteorism, selective pain palpatation in the right ileum fossa, no nausea, vomit or fever and Blumberg sign negative. The laboratory data showed leukocytosis (13.780/mm 3 ), neutrophilia (80%) and 4% of eosinophils. The rest of the red series, white and biochemical, were normal. Plain radiographs of the abdomen and an electrocardiogram were within normal limits. The clinical diagnosis was acute appendicitis. After a McBurney incision, the appendix was found to be normal, with abundant intraperitoneal exudate and inflammatory induration located in the terminal ileum, which showed a microperforation. A prophylactic appendectomy was performed, followed by a wedge resection of the indurated intestinal zone. The layers of the abdominal wall were cleaned and closed. The indurated zone was opened and, in the submucosa of the terminal ileum, a nematode of 2.5 cm in length was found. The neighbouring tissues were analyzed, and the caecal appendix was found with submucosal sclerolipmatosis, and the inflamed ileum was infiltrated with abundant eosinophils.The removed larva, still moving, were placed in saline solution and fixed in 2.5% (v/v) buffered glutaraldehyde (pH 7.2), and examined first under an optical microscope and later processed and examinded under a scanning electron microscope.+ Corresponding

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Morphology of Anisakine Larvae

Cited by 14 publications

References 10 publications

Human case of gastric infection by a fourth larval stage of Pseudoterranova decipiens (Nematoda, Anisakidae)

Human case of gastric infection by a fourth larval stage of Pseudoterranova decipiens (Nematoda, Anisakidae)

Human infection by Pseudoterranova decipiens (Nematoda, Anisakidae) in Chile: report of seven cases

Acute intestinal anisakiasis in Spain: a fourth-stage Anisakis simplex larva

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