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Bioactive endophytic fungi isolated from Caesalpinia echinata Lam. (Brazilwood) and identification of beauvericin as a trypanocidal metabolite from Fusarium sp.

Overview of attention for article published in Memórias do Instituto Oswaldo Cruz, February 2015
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Title
Bioactive endophytic fungi isolated from Caesalpinia echinata Lam. (Brazilwood) and identification of beauvericin as a trypanocidal metabolite from Fusarium sp.
Published in
Memórias do Instituto Oswaldo Cruz, February 2015
DOI 10.1590/0074-02760140243
Pubmed ID
Authors

Fernanda Fraga Campos, Policarpo A Sales Junior, Alvaro José Romanha, Márcio SS Araújo, Ezequias P Siqueira, Jarbas M Resende, Tânia MA Alves, Olindo A Martins-Filho, Vera Lúcia dos Santos, Carlos A Rosa, Carlos L Zani, Betania Barros Cota

Abstract

Aiming to identify new sources of bioactive secondary metabolites, we isolated 82 endophytic fungi from stems and barks of the native Brazilian tree Caesalpinia echinata Lam. (Fabaceae). We tested their ethyl acetate extracts in several in vitro assays. The organic extracts from three isolates showed antibacterial activity against Staphylococcus aureus and Escherichia coli [minimal inhibitory concentration (MIC) 32-64 μg/mL]. One isolate inhibited the growth of Salmonella typhimurium (MIC 64 μg/mL) and two isolates inhibited the growth of Klebsiella oxytoca (MIC 64 μg/mL), Candida albicans and Candida tropicalis (MIC 64-128 μg/mL). Fourteen extracts at a concentration of 20 μg/mL showed antitumour activities against human breast cancer and human renal cancer cells, while two isolates showed anti-tumour activities against human melanoma cancer cells. Six extracts were able to reduce the proliferation of human peripheral blood mononuclear cells, indicating some degree of selective toxicity. Four isolates were able to inhibit Leishmania (Leishmania) amazonensis and one isolate inhibited Trypanosoma cruzi by at least 40% at 20 μg/mL. The trypanocidal extract obtained from Fusarium sp. [KF611679] culture was subjected to bioguided fractionation, which revealed beauvericin as the compound responsible for the observed toxicity of Fusarium sp. to T. cruzi. This depsipeptide showed a half maximal inhibitory concentration of 1.9 μg/mL (2.43 μM) in a T. cruzi cellular culture assay.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 113 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Brazil 2 2%
Unknown 111 98%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 15 13%
Student > Master 15 13%
Researcher 9 8%
Student > Bachelor 9 8%
Student > Doctoral Student 8 7%
Other 24 21%
Unknown 33 29%
Readers by discipline Count As %
Agricultural and Biological Sciences 27 24%
Biochemistry, Genetics and Molecular Biology 12 11%
Chemistry 11 10%
Medicine and Dentistry 7 6%
Immunology and Microbiology 4 4%
Other 18 16%
Unknown 34 30%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 15 September 2015.
All research outputs
#14,794,387
of 22,778,347 outputs
Outputs from Memórias do Instituto Oswaldo Cruz
#875
of 1,376 outputs
Outputs of similar age
#198,822
of 352,484 outputs
Outputs of similar age from Memórias do Instituto Oswaldo Cruz
#5
of 18 outputs
Altmetric has tracked 22,778,347 research outputs across all sources so far. This one is in the 32nd percentile – i.e., 32% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,376 research outputs from this source. They receive a mean Attention Score of 4.4. This one is in the 34th percentile – i.e., 34% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 352,484 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 40th percentile – i.e., 40% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 18 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 66% of its contemporaries.