Advanced search
Start date
Betweenand

Pamidronate in the prevention of acute doxorubicin-induced cardiotoxicity

Grant number: 13/04280-8
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): November 01, 2013
Effective date (End): October 31, 2014
Field of knowledge:Health Sciences - Medicine - Medical Clinics
Principal researcher:Bertha Furlan Polegato
Grantee:Paula Bernardo de Carvalho
Home Institution: Faculdade de Medicina (FMB). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil

Abstract

Doxorubicin (DOX) is a drug used in the treatment of malignancies, but cardiotoxicity is the major side effect, which can be initiated immediately after drug´s infusion. Mechanisms involved in the genesis of the injury are increased inflammatory activity and activation of matrix metalloproteinases (MMP). Interventions which minimize activation of MMPs may play a role in cardiotoxicity's prevention. Pamidronate (PMD) is used in diseases that alter bone metabolism, such as osteoporosis. However, there are many others biological effects of this drug, such as inflammatory response reduction and decrease MMP activation. Therefore, the aim of the study is evaluating the effect of PMD in DOX-induced acute cardiotoxicity in rats. For this, rats will receive intraperitoneal injection of PMD (3mg/kg) and DOX (20mg/kg). We will have four experimental groups: DOX-PMD, PMD-control, DOX-control and control-control. Animals will be euthanized 48 hours following the infusion of drugs. In vivo cardiac function analysis will be performed by echocardiography and in vitro functional analysis will be performed by isolated heart study. The heart is collected for histological analysis, measurement of IL-10, IFN-gamma, TNF-alpha and ICAM-1 by ELISA and analysis of MMP activity 2 and 9 by zymography. Statistical analysis will be performed by two-way ANOVA. The significance level will be considered 5%.

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items
VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

Please report errors in scientific publications list by writing to: cdi@fapesp.br.