Data/hora: 13/06/2024 15:49:49

Provedor de dados: 	3	
País: 	Brazil	
Título: 	In vitro activity of 2-pyridinecarboxylic acid against trypanosomes of the subgenus Schizotrypanum isolated from the bat Phyllostomus hastatus - doi: 10.4025/actascibiolsci.v33i4.6482

In vitro activity of 2-pyridinecarboxylic acid against trypanosomes of the subgenus Schizotrypanum isolated from the bat Phyllostomus hastatus - doi: 10.4025/actascibiolsci.v33i4.6482	
Autores: 	Corrêa, Paulo Roberto Ceridório; UEL; Pinto, Artur da Silveira; UFMG; Silva, Grácia Divina de Fátima; UFMG; Vieira Filho, Sidney Augusto; UFOP; Duarte, Lucienir Pains; UFMG; Yamada-Ogatta, Sueli Fumie; UEL.	
Data: 	2011-09-02	
Ano: 	2011	
Palavras-chave: 	Ciências Biológicas; Microbiologia; 2.12.02.00-1 bat trypanosome; Schizotrypanum; 2-pyridinecarboxylic acid; Antimicrobial activity Atividade antimicrobiana bat trypanosome; Schizotrypanum; 2-pyridinecarboxylic acid; Antimicrobial activity.	
Resumo: 	The effect of 2-pyridinecarboxylic acid (picolinic acid) on trypanosomes of the subgenus Schizotrypanum isolated from the bat Phyllostomus hastatus was determined in this study. Picolinic acid, at 50 &amp;micro;g mL-1, inhibited epimastigote growth by 99% after 12 days incubation. In addition, trypomastigote motility decreased by 50% after 6h and completely after 24h in the presence of 50 &amp;micro;g mL-1 picolinic acid. The 50% cytotoxic concentration on HEp-2 cell line was 275 &amp;micro;g mL-1 after 4 days incubation. Altogether, these results indicate higher toxicity against trypanosomes. The inhibitory effect of picolinic acid on epimastigote growth can be partially reversed by nicotinic acid and L-tryptophan, suggesting a competitive inhibition. Furthermore, two anti-Trypanosoma (Schizotrypanum) cruzi drugs were also evaluated with regard to bat trypanosome growth. Benznidazole, at 50 &amp;micro;g mL-1, inhibited epimastigote growth by 90% after 12 days incubation. Nifurtimox, at the same concentration, caused 96% growth inhibition after four days incubation. Corroborating a previous study, bat trypanosomes are a good model for screening new trypanocidal compounds. Moreover, they can be used to study many biological processes common to human pathogenic trypanosomatids.	
Idioma: 	Inglês	
Identificador: 	http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/6482

10.4025/actascibiolsci.v33i4.6482	
Editor: 	Universidade Estadual De Maringá	
Formato: 	application/pdf

application/pdf	
Fonte: 	Acta Scientiarum. Biological Sciences; v. 33, n. 4 (2011); 437-443

Acta Scientiarum. Biological Sciences; v. 33, n. 4 (2011); 437-443	
Fonte: 	DECLARATION OF ORIGINALITY AND CESSATION OF COPYRIGHTI Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal. I also declare that once published in the Acta Scientiarum. Biological Sciences, a publication of the Universidade Estadual de Maringá, it will not be submitted by me or by any co-author to any other scientific communication mean. In my name and in the name of co-authors, I shall cede the copyright of the above mentioned article to the Universidade Estadual de Maringá and I declare that I know that the non-observance of this norm may make me liable for the penalties contemplated in the Law for the Protection of Authors’ Rights (Act 9609 of the 19th February 1998).

DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS  Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Biological Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).