Evidence map›Paper›PMID 22649439›Full record

ArticleAfrican health sciences2011

The efficacy of the crude root bark extracts of Erythrina abyssinica on rifampicin resistant Mycobacterium tuberculosis.

L Bunalema, C Kirimuhuzya, J R S Tabuti, P Waako, J J Magadula, N Otieno, J A Orodho, P Okemo

Abstract read
In one paragraph

Article in African health sciences, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Medicinal Plants in the Treatment of Tuberculosis: A Systematic Review.Central nervous system agents in medicinal chemistry · 2025
    Pooled it
  2. Pooled it
  3. Review
  4. Review
  5. Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Review
  11. Traditional Medicinal Uses, Phytoconstituents, Bioactivities, and Toxicities ofEvidence-based complementary and alternative medicine : eCAM · 2021
    Review
  12. Review
  13. Article
  14. Review
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.

L BunalemaDepartment of Pharmacology and Therapeutics, Makerere University College for Health Sciences, Uganda.
C Kirimuhuzya
J R S Tabuti
P Waako
J J Magadula
N Otieno
J A Orodho
P Okemo

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionTuberculosis (TB) is one of the leading causes of morbidity and mortality with a global mortality rate at two million deaths per year while one third of the world's population is infected with the TB bacillus.

objectiveTo determine the efficacy of the crude extracts of Erythrina abyssinica root bark on rifampicin-resistant TB.

methodsCrude extracts of root bark of Erythrina abyssinica, were screened against three strains of Mycobacterium tuberculosis including rifampicin-resistant TMC-331. Susceptibility tests used the disc diffusion method and were done on solid Middle brook 7H10, while the Minimum Inhibitory concentration (MICs) and minimum bactericidal concentration (MBCs) were determined by the Microtitre plate method using Middle brook 7H9 broth.

resultsThe total crude methanol extract showed activity against all the three strains of mycobacterium used, at 50mg/ml and diameters of zones of inhibition of up to 26 mm. Erythrina abyssinica total crude methanol extract showed the highest activity on the pan sensitive strain H37Rv (0.39±0.0 mg/ml) and the rifampicin resistant strain (TMC-331) (2.35±1.11 mg/ ml) and was also active on Mycobacterium avium (0.39±0.mg/ml. The values for isoniazid were 0.25µg/ml and 9.38µg/ml for H37Rv and TMC-331 respectively, while for rifampicin the MIC value was 0.25µg/ml for H37Rv but it was not active on TMC-331. Acute toxicity test gave an LD50 of 776.2mg/kg body weight while the phytochemical analysis showed the presence of alkaloids, tannins and flavones.

conclusionThe conclusion from the study was that Erythrina abbyssinica has antimycobacterial activity and reasonable safety that merits further research.

Indexed as

AnimalsAntibiotics, AntitubercularAntitubercular AgentsDrug Resistance, BacterialFabaceaeHumansMiceMicrobial Sensitivity TestsMycobacterium aviumMycobacterium tuberculosisPhytotherapyPlant ExtractsPlant RootsPlants, MedicinalRifampinToxicity Tests, AcuteAntibiotics, AntitubercularAntitubercular AgentsPlant ExtractsRifampinErythrina abbyssinicaMycobacterium tuberculosisrifampicin-resistance

Identifiers

PMID22649439
PMCPMC3362973

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Registered trials

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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.