Publications by authors named "Marcelo Lc Gonçalves"

2 Publications

  • Page 1 of 1

New finding of Giardia intestinalis (Eukaryote, Metamonad) in Old World archaeological site using immunofluorescence and enzyme-linked immunosorbent assays.

Mem Inst Oswaldo Cruz 2008 May 30;103(3):298-300. Epub 2008 Apr 30.

Laboratoire de Paléoparasitologie, UFR de Pharmacie, Université de Reims, Reims, France.

In this study, nine organic sediment samples from a medieval archaeological site at Pineuilh, France, were examined for Giardia intestinalis using two commercially available immunological kits [enzyme-linked immuno sorbent and immunofluorescence (IFA) assays]. Both techniques detected G. intestinalis in one sample, dated to 1,000 Anno Domini. This is the first time IFA was successfully used to detect protozoa in Old World archaeological samples. Such immunological techniques offer important perspectives concerning ancient protozoa detection and identification.
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http://dx.doi.org/10.1590/s0074-02762008005000018DOI Listing
May 2008

Capillaria spp. eggs in Patagonian archaeological sites: statistical analysis of morphometric data.

Mem Inst Oswaldo Cruz 2008 Feb;103(1):104-5

Laboratorio de Zoonosis Parasitarias, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Buenos Aires, Argentina.

Discriminant analysis was used to identify eggs of Capillaria spp. at specific level found in organic remains from an archaeological site in Patagonia, Argentina, dated of 6,540 +/- 110 years before present. In order to distinguish eggshell morphology 149 eggs were measured and grouped into four arbitrary subsets. The analysis used on egg width and length discriminated them into different morphotypes (Wilks' lambda = 0.381, p < 0.05). The correlation analysis suggests that width was the most important variable to discriminate among the Capillaria spp. egg morphotypes (Pearson coefficient = 0.950, p < 0.05). The study of eggshell patterns, the relative frequency in the sample, and the morphometric data allowed us to correlate the four morphotypes with Capillaria species.
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http://dx.doi.org/10.1590/s0074-02762008000100016DOI Listing
February 2008