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Ferriz-Martínez R, García-García K, Torres-Arteaga I, Rodriguez-Mendez AJ, Guerrero-Carrillo MDJ, Moreno-Celis U, Ángeles-Zaragoza MV, Blanco-Labra A, Gallegos-Corona MA, Robles-Álvarez JP, Mendiola-Olaya E, Andrade-Montemayor HM, Garcia OP, Garcia-Gasca T. Tolerability assessment of a lectin fraction from Tepary bean seeds ( Phaseolus acutifolius) orally administered to rats. Toxicol Rep 2014; 2:63-69. [PMID: 28962338 PMCID: PMC5598141 DOI: 10.1016/j.toxrep.2014.10.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Revised: 10/19/2014] [Accepted: 10/20/2014] [Indexed: 11/04/2022] Open
Abstract
We examine the toxicological profile of Tepary Bean lectins by oral route. Tepary bean lectins showed digestion resistance up to 72 h. Tepary bean lectins induce granulocyte increase after 24 h treatment. A reduction in body weight gain was observed after 6 weeks treatment. No toxicity was observed for Tepary bean lectins after 6 weeks.
Our previous studies have shown that a lectin rich fraction (TBLF) extracted from Tepary bean seeds differentially inhibits cancer cells proliferation in vitro. Before testing the in vivo anticancer effect, the acute and subchronic toxicological assays in rats were conducted, where an oral dose of 50 mg/body weight kg was determined as the NOAEL. This study evaluated the resistance to digestion and complete blood count (CBC) after 24 h of the orally administered 50 mg/kg TBLF. The digestion resistance test showed lectins activity retention after 72 h and the CBC study showed a high level of eosinophils, suggesting an allergic-like response. Tolerability was assayed after 6 weeks of treatment by dosing with an intragastric cannula every third day per week. It was observed a transient reduction in food intake and body weight in the first weeks, resulting in body weight gain reduction of 10% respect to the control group at the end of the study. Additionally, organs weight, histopathological analysis and blood markers for nutritional status and for liver, pancreas and renal function were not affected. Our results suggest that 50 mg/kg TBLF administered by oral route, exhibit no toxicity in rats and it was well tolerated. Further studies will focus on long-term studies.
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Affiliation(s)
- Roberto Ferriz-Martínez
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, P.O. Box 184, Querétaro 76010, Qro., C.P. 76230, Mexico
| | - Karina García-García
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, P.O. Box 184, Querétaro 76010, Qro., C.P. 76230, Mexico
| | - Iovanna Torres-Arteaga
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, P.O. Box 184, Querétaro 76010, Qro., C.P. 76230, Mexico
| | | | | | - Ulisses Moreno-Celis
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, P.O. Box 184, Querétaro 76010, Qro., C.P. 76230, Mexico
| | - Marco Vinicio Ángeles-Zaragoza
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, P.O. Box 184, Querétaro 76010, Qro., C.P. 76230, Mexico
| | - Alejandro Blanco-Labra
- Departamento de Biotecnología y Bioquímica, Centro de Investigación y Estudios Avanzados del IPN, P.O. Box 629, Irapuato, Gto., C.P. 36821, Mexico
| | | | - Juan Pablo Robles-Álvarez
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, P.O. Box 184, Querétaro 76010, Qro., C.P. 76230, Mexico
| | - Elizabeth Mendiola-Olaya
- Departamento de Biotecnología y Bioquímica, Centro de Investigación y Estudios Avanzados del IPN, P.O. Box 629, Irapuato, Gto., C.P. 36821, Mexico
| | | | - Olga Patricia Garcia
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, P.O. Box 184, Querétaro 76010, Qro., C.P. 76230, Mexico
| | - Teresa Garcia-Gasca
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, P.O. Box 184, Querétaro 76010, Qro., C.P. 76230, Mexico
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