26
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Studies on protozoa in ancient remains - A Review

      review-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Paleoparasitological research has made important contributions to the understanding of parasite evolution and ecology. Although parasitic protozoa exhibit a worldwide distribution, recovering these organisms from an archaeological context is still exceptional and relies on the availability and distribution of evidence, the ecology of infectious diseases and adequate detection techniques. Here, we present a review of the findings related to protozoa in ancient remains, with an emphasis on their geographical distribution in the past and the methodologies used for their retrieval. The development of more sensitive detection methods has increased the number of identified parasitic species, promising interesting insights from research in the future.

          Related collections

          Most cited references98

          • Record: found
          • Abstract: found
          • Article: not found

          Duration of immunity to shedding of Toxoplasma gondii oocysts by cats.

          Cats that have shed Toxoplasma gondii oocysts are considered to be immune to reshedding of oocysts. To investigate if this immunity persists in cats for 6 yr, 12 4-6-mo-old cats without T. gondii antibodies were inoculated orally with tissue cysts of the ME-49 strain (6 cats) and the TS-2 strain (6 cats) of T. gondii. All of them shed > or = 20 million oocysts between 4 and 13 days after feeding tissue cysts. Two cats became ill between 11 and 13 days after primary infection; 1 died on the 13th day, and the other had to be killed on the 11th day because of generalized acute toxoplasmosis. Toxoplasma gondii oocysts were not found on the hair of 10 cats examined 7 days after cats had shed millions of oocysts. On day 39 after primary infection, 5 cats (2 infected with the ME-49 strain and 3 infected with the TS-2 strain) were challenged orally with tissue cysts of the ME-49 strain. None of the challenged cats shed oocysts. One cat died due to causes unrelated to toxoplasmosis. Seventy-seven months after primary infection, the remaining 9 cats were challenged orally with tissue cysts of the P89 strain of T. gondii. Four of these 9 cats re-shed T. gondii oocysts; 3 of them had been challenged also at 39 days after primary infection. Two control cats housed together with chronically infected cats for 6 yr remained seronegative for T. gondii; both of these shed oocysts after challenge with the P89 strain.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Multiple independent introductions of Plasmodium falciparum in South America.

            The origin of Plasmodium falciparum in South America is controversial. Some studies suggest a recent introduction during the European colonizations and the transatlantic slave trade. Other evidence--archeological and genetic--suggests a much older origin. We collected and analyzed P. falciparum isolates from different regions of the world, encompassing the distribution range of the parasite, including populations from sub-Saharan Africa, the Middle East, Southeast Asia, and South America. Analyses of microsatellite and SNP polymorphisms show that the populations of P. falciparum in South America are subdivided in two main genetic clusters (northern and southern). Phylogenetic analyses, as well as Approximate Bayesian Computation methods suggest independent introductions of the two clusters from African sources. Our estimates of divergence time between the South American populations and their likely sources favor a likely introduction from Africa during the transatlantic slave trade.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Mummies.

              Mummies are human remains with preservation of nonbony tissue. Mummification by natural influences results in so-called natural mummies, whereas mummification induced by active (human) intervention results in so-called artificial mummies, although many cultures practiced burial rites, which to some degree involved both natural and artificial mummification. Since they are so uniquely well-preserved, mummies may give many insights into mortuary practices and burial rites. Specifically, the presence of soft tissues may expand the scope of paleopathological studies. Many recent mummy studies focus on the development and application of nondestructive methods for examining mummies, including radiography, CT-scanning with advanced three-dimensional visualizations, and endoscopic techniques, as well as minimally-destructive chemical, physical, and biological methods for, e.g., stable isotopes, trace metals, and DNA. This article discusses mummification and gives a presentation of various key mummy finds and a brief history of mummy studies. A description of the extant key technologies of natural and medical science that are applied in mummy studies is given; along with a discussion of some of the major results in terms of paleopathology. It is also shown how mummy studies have contributed much to the knowledge of the cultural habits and everyday life of past populations. Finally the impact of mummy studies on analyses of mortuary practices and cultural history is discussed.
                Bookmark

                Author and article information

                Journal
                Mem Inst Oswaldo Cruz
                Mem. Inst. Oswaldo Cruz
                Memórias do Instituto Oswaldo Cruz
                Instituto Oswaldo Cruz, Ministério da Saúde
                0074-0276
                1678-8060
                February 2013
                February 2013
                : 108
                : 1
                : 1-12
                Affiliations
                [I ]Escola Nacional de Saúde Pública-Fiocruz, Rio de Janeiro, RJ, Brasil
                [II ]Departamento de Microbiologia e Parasitologia, Instituto Biomédico, Universidade Federal Fluminense, Rio de Janeiro, RJ, Brasil
                Author notes
                [+ ]Corresponding author: adauto@ 123456ensp.fiocruz.br

                Financial support: CNPq, FAPERJ

                Article
                S0074-02762013000100001
                10.1590/S0074-02762013000100001
                3974329
                23440107
                c8fdbbdc-1666-462a-b4a8-2bdf11355aa8

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 01 October 2012
                : 23 November 2012
                Page count
                Figures: 4, Tables: 6, References: 95, Pages: 12
                Categories
                Review

                paleoparasitology,mummies,coprolites,infectious diseases,protozoa,paleoepidemiology

                Comments

                Comment on this article