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Effect of pregnancy followed by lactation on miRNAs modulation of maternal pancreatic islets

Grant number: 17/11138-4
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): June 01, 2017
Effective date (End): July 31, 2019
Field of knowledge:Biological Sciences - Biochemistry
Principal Investigator:Licio Augusto Velloso
Grantee:Julia Modesto Vicente
Home Institution: Faculdade de Ciências Médicas (FCM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:13/07607-8 - OCRC - Obesity and Comorbidities Research Center, AP.CEPID


A series of studies show that duration of breastfeeding has an inverse relationship with the risk of mothers developing Type 2 diabetes mellitus (T2DM). Despite this, the mechanism by which breastfeeding duration affects late maternal metabolism is unknown yet. Recently, it has been shown that the differential expression of miRNAs may be the basis of long-term functional modifications. Ongoing studies from our laboratory show that mice that become pregnant and breastfeed retain high insulin secretory capacity for pancreatic islets. This phenotypic change is accompanied by increased glucose tolerance and it lasts for two months after weaning. The present project aims to track the miRNAs differentially expressed in pancreatic islets that may potentially be associated with this adaptation. (AU)