Evidence map›Paper›PMID 29287598›Full record

ArticleParasites & vectors2017

Molecular screening of tsetse flies and cattle reveal different Trypanosoma species including T. grayi and T. theileri in northern Cameroon.

Sen Claudine Henriette Ngomtcho, Judith Sophie Weber, Elisabeth Ngo Bum, Thaddeus Terlumun Gbem, Sørge Kelm, Mbunkah Daniel Achukwi

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 11% 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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 69 citations in OpenAlex.

  1. Pooled it
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  8. Review
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  11. Molecular and phylogenetic analysis of a type K1 strainBiochemistry and biophysics reports · 2023
    Article
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  13. Article
  14. Article
  15. Trypanosomes of theMicroorganisms · 2022
    Article
  16. Article
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  19. Article
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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

6 authors at 4 institutions in 3 countries.

Sen Claudine Henriette NgomtchoDepartment of Biological Sciences, University Ngaoundéré, P.O. Box 454, Ngaoundéré, Cameroon.
Judith Sophie WeberCentre for Biomolecular Interactions Bremen, Department of Biology and Chemistry, University Bremen, 28334, Bremen, Germany.
Elisabeth Ngo BumDepartment of Biological Sciences, University Ngaoundéré, P.O. Box 454, Ngaoundéré, Cameroon.
Thaddeus Terlumun GbemAfrica Centre of Excellence for Neglected Tropical Diseases and Forensic Biotechnology, Ahmadu Bello University, Zaria, Nigeria.
Sørge KelmCentre for Biomolecular Interactions Bremen, Department of Biology and Chemistry, University Bremen, 28334, Bremen, Germany.
Mbunkah Daniel AchukwiTOZARD Research Laboratory, P.O. Box 59, Bambili-Tubah, Bamenda, Cameroon. dmbunkahachukwi@gmail.com.
University of Bremen · DEUniversity of Ngaoundéré · CMAhmadu Bello University · NGUniversity of Bamenda · CM

Funding

Deutsche Forschungsgemeinschaft Ke428/8-1, Ke428/10-1Deutscher Akademischer Austauschdienst CN_A/12/97080
6 · The paper itself

Abstract

backgroundAfrican trypanosomes are mainly transmitted through the bite of tsetse flies (Glossina spp.). The present study investigated the occurrence of pathogenic trypanosomes in tsetse flies and cattle in tsetse fly-infested areas of Northern Cameroon.

resultsTrypanosomes were identified using nested polymerase chain reaction (PCR) analysis of internal transcribed spacer 1 (ITS1) region, both by size estimation and sequencing of PCR products. Apparent density indices recorded in Gamba and Dodeo were 3.1 and 3.6 tsetse flies per trap and day, respectively. Trypanosoma prevalence infection rate for the tsetse fly gut (40%) and proboscis (19%) were recorded. Among the flies where trypanosomes were detected in the gut, 41.7% were positive for T. congolense and 14.6% for T. brucei ssp., whereas in the proboscis 36% harboured T. congolense and 62% contained T. vivax. T. grayi was highly prevalent in tsetse fly gut (58%). The most common mixed infections were the combination of T. congolense and T. grayi. Trypanosome prevalence rate in cattle blood was 6%. Among these, T. vivax represented 26%, T. congolense 35%, T. brucei ssp. 17% and T. theileri 17% of the infections. Surprisingly, in one case T. grayi was found in cattle. The mean packed cell volume (PCV) of cattle positive for trypanosomes was significantly lower (24.1 ± 5.6%; P < 0.05) than that of cattle in which trypanosomes were not detected (27.1 ± 4.9%). Interestingly, the occurrence of T. theileri or T. grayi DNA in cattle also correlated with low PCV at pathological levels.

conclusionThis molecular epidemiological study of Trypanosoma species in Northern Cameroon revealed active foci of trypanosomes in Dodeo and Gamba. These findings are relevant in assessing the status of trypanosomosis in these regions and will serve as a guide for setting the priorities of the government in the control of the disease.

Indexed as

AnimalsCameroonCattleCattle DiseasesDNA, ProtozoanDNA, Ribosomal SpacerMass ScreeningMolecular EpidemiologyParasite LoadPolymerase Chain ReactionPrevalenceSequence Analysis, DNATrypanosomaTrypanosomiasisTsetse FliesDNA, ProtozoanDNA, Ribosomal SpacerBodonidaeCattleITS1Northern CameroonTrypanosoma grayiTrypanosoma theileriTrypanosomosisTsetse fly

Identifiers

PMID29287598
PMCPMC5747950
OpenAlexW2777382651

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.