Evidence map›Paper›PMID 24416462›Full record

ArticlePLoS neglected tropical diseases2014

Bioassay-guided fractionation of extracts from Codiaeum variegatum against Entamoeba histolytica discovers compounds that modify expression of ceramide biosynthesis related genes.

Emmanuel Mfotie Njoya, Christian Weber, Nora Adriana Hernandez-Cuevas, Chung-Chau Hon, Yves Janin, Melanie F G Kamini, Paul F Moundipa, Nancy Guillén

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 24% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.

  1. A systematic review of anti-Parasitology · 2021
    Pooled it
  2. Lipids inFrontiers in cellular and infection microbiology · 2020
    Review
  3. Revisiting Drug Development Against the Neglected Tropical Disease, Amebiasis.Frontiers in cellular and infection microbiology · 2020
    Review
  4. Non-vesicular Lipid Transport Machinery inFrontiers in cellular and infection microbiology · 2018
    Review
  5. RANDOMIZED ANTICANCER AND CYTOTOXICITY ACTIVITIES OFAfrican journal of traditional, complementary, and alternative medicines : AJTCAM · 2017
    Article
  6. Article
  7. Article
  8. 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

8 authors at 3 institutions in 2 countries.

Emmanuel Mfotie NjoyaUniversity of Yaoundé I, Faculty of Science, Department of Biochemistry, Laboratory of Pharmacology and Toxicology, Yaoundé, Cameroon ; Institut Pasteur, Cell Biology of Parasitism Unit, Paris, France ; INSERM U786, Paris, France.
Christian WeberInstitut Pasteur, Cell Biology of Parasitism Unit, Paris, France ; INSERM U786, Paris, France.
Nora Adriana Hernandez-CuevasInstitut Pasteur, Cell Biology of Parasitism Unit, Paris, France ; INSERM U786, Paris, France.
Chung-Chau HonInstitut Pasteur, Cell Biology of Parasitism Unit, Paris, France ; INSERM U786, Paris, France.
Yves JaninInstitut Pasteur, Unité de Chimie et Biocatalyse, Paris, France.
Melanie F G KaminiUniversity of Yaoundé I, Faculty of Science, Department of Biochemistry, Laboratory of Pharmacology and Toxicology, Yaoundé, Cameroon.
Paul F MoundipaUniversity of Yaoundé I, Faculty of Science, Department of Biochemistry, Laboratory of Pharmacology and Toxicology, Yaoundé, Cameroon.
Nancy GuillénInstitut Pasteur, Cell Biology of Parasitism Unit, Paris, France ; INSERM U786, Paris, France.
Institut Pasteur · FRUniversité de Yaoundé I · CMInserm · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Leaves of Codiaeum variegatum ("garden croton") are used against bloody diarrhoea by local populations in Cameroon. This study aims to search for the active components from C. variegatum against Entamoeba histolytica, and thereby initiate the study of their mechanism of action. A bioassay-guided screening of the aqueous extracts from C. variegatum leaves and various fractions was carried out against trophozoites of E. histolytica axenic culture. We found that the anti-amoebic activity of extracts changed with respect to the collection criteria of leaves. Thereby, optimal conditions were defined for leaves' collection to maximise the anti-amoebic activity of the extracts. A fractionation process was performed, and we identified several sub-fractions (or isolated compounds) with significantly higher anti-amoebic activity compared to the unfractionated aqueous extract. Anti-amoebic activity of the most potent fraction was confirmed with the morphological characteristics of induced death in trophozoites, including cell rounding and lysis. Differential gene expression analysis using high-throughput RNA sequencing implies the potential mechanism of its anti-amoebic activity by targeting ceramide, a bioactive lipid involved in disturbance of biochemical processes within the cell membrane including differentiation, proliferation, cell growth arrest and apoptosis. Regulation of ceramide biosynthesis pathway as a target for anti-amoebic compounds is a novel finding which could be an alternative for drug development against E. histolytica.

Indexed as

Antiprotozoal AgentsApoptosisBiological AssayBiosynthetic PathwaysCameroonCell SurvivalCeramidesEntamoeba histolyticaEuphorbiaceaeHumansPlant ExtractsPlant LeavesAntiprotozoal AgentsCeramidesPlant Extracts

Identifiers

PMID24416462
PMCPMC3887121
OpenAlexW2032349550

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.