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PubMed1994

Endoreplication in the ovary, testis, and intestine of Strongyloides stercoralis.

During development of the free-living adults of the human parasitic nematode Stronglyoides stercoralis, cells in certain tissues grow by endoreplication in which rounds of DNA replication occur without cell or nuclear division. The DNA content of individual nuclei was measured by microdensitometry of Feulgen-stained preparations. In females, some ovarian cells have up to 800 times the haploid DNA content (800C). In males, some cells of the testis have up to 100C. Intestinal cells in both sexes have up to 16C, whereas most other somatic cells have 2C.

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PubMedDate not supplied

[Prevalence of Strongyloides stercoralis infection in childhood. Orán, Salta, Argentina].

An enteroparasitological, clinical and epidemiological study was carried out in 36 infants who attended the Hospital San Vicente de Paul from Orán for medical assistance. The age of the children varied between 0 and 4 years with an average of 28 months. The main clinical causes for consultation were bronchitis (52.8%), inappetence (52.8%) and paleness (27.8%). The general characteristics of the stool samples were: formed 44.4% and diarrheic 55.6%. The frequency of intestinal helminthic and protozoan elements was the following: S. stercoralis 30(83.3%) N. americanus 5(13.9%), A. lumbricoides 7(19.4%), T. trichiura 3(8.3%), H. nana 5(13.9%), G. intestinalis 10(27.8%), I. belli 1 (2.8%) and E. coli 4 (11.1%). The nutritional condition found in the infants, according to the relation high/weight was: eutrophic 17(42.2%), lightly undernourished 9(20.0%), moderately undernourished 9(25.0%) and severely undernourished 1(2.8%). The mean values of hematocrit and hemoglobin found were under those established as minima by the W.H.O. The white blood cells and eosinophils countings were over the normal mean values.

Age Factors↗
PubMed1995

[Strongyloides stercoralis. Report of a case and review of the literature].

A fatal case of strongyloidiasis in a boy aged 8 months, referred to our hospital, with severe malnutrition, dehydration, brownish fluid through the naso-gastric tube and relapsing chronic diarrhea with bloody mucus. Through all symptoms and observation of rabditoid larvae, eggs and even adult females, parasitologic diagnosis was achieved. In spite of medical intensive care the patient died after 18 days of hospitalization. Disease's pathophysiology is discussed as well as a review about the trustfulness of the parasite biological cycle as is traditionally described in the literature. Ability is questioned of rabditoid larvae to follow the alternative way as free living adults or parasitic living in adults.

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