Safety evaluation of the antimicrobial peptide bovicin HC5 orally administered to a murine model
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- 作者：Aline Dias Paiva (1)
Kenner Morais Fernandes (2)
Roberto Sousa Dias (2)
Alípio dos Santos Rocha (2)
Leandro Licursi de Oliveira (2)
Clóvis Andrade Neves (2)
Sérgio Oliveira de Paula (2)
Hilário Cuquetto Mantovani (1) - 关键词：Bacteriocin ; Lantibiotic ; Streptococcus bovis HC5 ; BALB/c mice ; Ovalbumin
- 刊名：BMC Microbiology
- 出版年：2013
- 出版时间：December 2013
- 年：2013
- 卷：13
- 期：1
- 全文大小：834KB
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Kenner Morais Fernandes (2)
Roberto Sousa Dias (2)
Alípio dos Santos Rocha (2)
Leandro Licursi de Oliveira (2)
Clóvis Andrade Neves (2)
Sérgio Oliveira de Paula (2)
Hilário Cuquetto Mantovani (1)
1. Departamento de Microbiologia, Universidade Federal de Vi?osa, Vi?osa, Minas Gerais, Brazil
2. Departamento de Biologia Geral, Universidade Federal de Vi?osa, Vi?osa, Minas Gerais, Brazil - ISSN：1471-2180
文摘
Background Bovicin HC5 is an antimicrobial peptide that shows a broad spectrum of activity and potential for biotechnological and therapeutic applications. To gain insight about the safety of bovicin HC5 application, the histological and immunostimulatory effects of orally administrated bovicin HC5 to BALB/c mice were evaluated. BALB/c mice were divided into three groups: negative control (NC group); mice given purified bovicin HC5 (Bov group); mice given ovalbumin (positive control, PC group; a murine model of enteropathy). The mice were initially pre-sensitized, and PBS, bovicin HC5 or ovalbumin were administered for 30 days by daily gavages. Histological and morphometric analysis were performed and the relative expression of cytokines was analyzed by real-time RT-PCR. Results The oral administration of bovicin HC5 to BALB/c mice reduced weight gain and caused alterations in the small intestine, although absorptive changes have not been detected. The number of total goblet cells and the mucopolysaccharides production were not affected by bovicin HC5 administration. A hypertrophy of Paneth cells and an increase in the number of mitotic cells were observed in Bov group, while the number of mast cells remained unaltered. Increased expression of TNF-α, INF-γ and IL-12 was observed in the small intestine upon bovicin HC5 administration. Conclusion Bovicin HC5 has only minor effects on intestinal permeability and did not elicit an allergenic response upon oral administration to animal models. Considering the low in vivo toxicity of bovicin HC5, it might be a good candidate for enteral applications.