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Int. J. Environ. Res. Public Health 2016, 13(5), 446; doi:10.3390/ijerph13050446

Protective Action of Carica papaya on β-Cells in Streptozotocin-Induced Diabetic Rats

1
Centro de Investigación, División Académica de Ciencias de la Salud, Universidad Juárez Autónoma de Tabasco (UJAT), Villahermosa, Tabasco 86100, Mexico
2
División de Investigación, Facultad de Medicina, Universidad Nacional Autónoma de Mexico, Mexico, D.F., 04510, México
3
Unidad Profesional Interdisciplinaria de Ingeniería, Instituto Politécnico Nacional, Silao de Victoria, Guanajuato 36275, Mexico
4
División Académica Multidisciplinaria de Comalcalco, Universidad Juárez Autónoma de Tabasco, Comalcalco, Tabasco 86650, Mexico
*
Author to whom correspondence should be addressed.
Academic Editor: Omorogieva Ojo
Received: 21 February 2016 / Revised: 11 April 2016 / Accepted: 19 April 2016 / Published: 27 April 2016
(This article belongs to the Collection Health Care and Diabetes)
View Full-Text   |   Download PDF [776 KB, uploaded 27 April 2016]   |  

Abstract

The aim of the present study was to investigate the effect of C. papaya L. leaf extract (CPLE) on pancreatic islets in streptozotocin (STZ)-induced diabetic rats, as well as on cultured normal pancreatic cells with STZ in the medium. CPLE (3–125 mg/Kg) was administered orally for 20 days, while a group of diabetic rats received 5 IU/Kg/day of insulin. At the end of the treatment the rats were sacrificed. Blood was obtained to assess glucose and insulin levels. The pancreas was dissected to evaluate β cells by immunohistochemistry. In addition, normal pancreatic cells were cultured in a medium that included CPLE (3–12 mg). One half of the cultured cells received simultaneously CPLE and STZ (6 mg), while the other half received CPLE and five days later the STZ. After three days of incubation, insulin was assayed in the incubation medium. The CPLE administered to diabetic rats improved the fasting glycemia and preserved the number and structure of pancreatic islets. However, when CPLE was added to pancreatic cells in culture along with STZ, the insulin concentration was higher in comparison with the cells that only received STZ. In conclusion, the CPLE preserves the integrity of pancreatic islets, improves the basal insulin secretion and protects cultured cells from the adverse effects of STZ. View Full-Text
Keywords: β-cells; Carica papaya ; diabetes; pancreatic islets β-cells; Carica papaya ; diabetes; pancreatic islets
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MDPI and ACS Style

Miranda-Osorio, P.H.; Castell-Rodríguez, A.E.; Vargas-Mancilla, J.; Tovilla-Zárate, C.A.; Ble-Castillo, J.L.; Aguilar-Domínguez, D.E.; Juárez-Rojop, I.E.; Díaz-Zagoya, J.C. Protective Action of Carica papaya on β-Cells in Streptozotocin-Induced Diabetic Rats. Int. J. Environ. Res. Public Health 2016, 13, 446.

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