Evidence map›Paper›PMID 11015408›Full record

ArticleJournal of clinical microbiology2000

Molecular epidemiology of Entamoeba spp.: evidence of a bottleneck (Demographic sweep) and transcontinental spread of diploid parasites.

S Ghosh, M Frisardi, L Ramirez-Avila, S Descoteaux, K Sturm-Ramirez, O A Newton-Sanchez, J I Santos-Preciado, C Ganguly, A Lohia, S Reed and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Journal of clinical microbiology, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
3.0field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

42 citing papers in PubMed, 97 citations in OpenAlex.

  1. Article
  2. Article
  3. PeerJ · 2017
    Article
  4. TheCurrent tropical medicine reports · 2016
    Article
  5. Article
  6. Evolutionary genomics and population structure of Entamoeba histolytica.Computational and structural biotechnology journal · 2014
    Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Evidence for a link between locus R-R sequence type and outcome of infection with Entamoeba histolytica.Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases · 2012
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Human amebiasis: breaking the paradigm?International journal of environmental research and public health · 2010
    Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 4 institutions in 3 countries.

S GhoshDepartment of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, Massachusetts.
M Frisardi
L Ramirez-Avila
S Descoteaux
K Sturm-Ramirez
O A Newton-Sanchez
J I Santos-Preciado
C Ganguly
A Lohia
S Reed
J Samuelson
Harvard University · USBose Institute · INHospital Infantil de México Federico Gómez · MXUniversity of California San Diego Medical Center · US

Funding

TL MOLECULES AND GAMMA-DELTA T CELLSP01DK035108 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KAGNOFF, MARTIN FREDERICK · 1986 to 2013
$19.2M
CYSTEINE PROTEINASES AND VIRULENCE OF E. HISTOLYTICAR21AI028035 · NIAID · UNIVERSITY OF CALIFORNIA SAN DIEGO · PI REED, SHARON L · 2000 to 2000
$336k
CYSTEINE PROTEINASES AND VIRULENCE OF E. HISTOLYTICAR01AI028035 · NIAID · UNIVERSITY OF CALIFORNIA SAN DIEGO · PI REED, SHARON L · 1990 to 1998
–
ALCOHOL DEHYDROGENASES OF ENTAMOEBAER01AI033492 · NIAID · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI SAMUELSON, JOHN C. · 1995 to 1998
–
NIAID NIH HHS AI-28035NIAID NIH HHS AI-33492NIDDK NIH HHS P01 DK035108NIGMS NIH HHS GM31818
6 · The paper itself

Abstract

Entamoeba histolytica causes amebic colitis and liver abscess in developing countries such as Mexico and India. Entamoeba dispar is morphologically identical but is not associated with disease. Here we determined the ploidy of E. histolytica and developed PCR-based methods for distinguishing field isolates of E. histolytica or E. dispar. Fluorescence in situ hybridization showed that E. histolytica trophozoites are diploid for five "single-copy" probes tested. Intergenic sequences between superoxide dismutase and actin 3 genes of clinical isolates of E. histolytica from the New and Old Worlds were identical, as were those of E. dispar. These results suggest a bottleneck or demographic sweep in entamoebae which infect humans. In contrast, E. histolytica and E. dispar genes encoding repeat antigens on the surface of trophozoites (Ser-rich protein) or encysting parasites (chitinase) were highly polymorphic. chitinase alleles suggested that the early axenized strains of E. histolytica, HM-1 from Mexico City, Mexico, and NIH-200 from Calcutta, India, are still present and that similar E. dispar parasites can be identified in both the New and Old Worlds. Ser-rich protein alleles, which suggested the presence of the HM-1 strain in Mexico City, included some E. histolytica genes that predicted Ser-rich proteins with very few repeats. These results, which suggest diversifying selection at chitinase and Ser-rich protein loci, demonstrate the usefulness of these alleles for distinguishing clinical isolates of E. histolytica and E. dispar.

Indexed as

ActinsAmino Acid SequenceAnimalsBacterial ProteinsBase SequenceChitinasesDemographyDiploidyEntamoebaEntamoeba histolyticaEntamoebiasisHumansIndiaIn Situ Hybridization, FluorescenceIntronsMexicoActinsBacterial ProteinsChitinasesSerine

Identifiers

PMID11015408
PMCPMC87481
OpenAlexW1774456709

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.