Advanced search
Start date

Neurocognitive evaluation in sepsis survivors rats treated with simvastatin

Grant number: 16/12561-5
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): August 01, 2016
Effective date (End): July 31, 2017
Field of knowledge:Biological Sciences - Physiology - General Physiology
Principal Investigator:Maria José Alves da Rocha
Grantee:Jéssica Priscila de Mélo
Host Institution: Faculdade de Odontologia de Ribeirão Preto (FORP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil


Despite technological advances, sepsis and its consequence severe sepsis and septic shock are still the leading cause of death in Intensive Care Unit (ICU). The majority of the survivors of these clinical conditions will present some cognitive impairment soon after discharge which can be or not over the years. Clinical and experimental studies, report that the initial phase of sepsis is characterized by high plasma levels of arginine vasopressin (AVP) and the late phase, by low levels, which contribute to hypotension, shock and death. Some studies show that the decreased AVP secretion occurs due to oxidative stress or apoptosis in the hypothalamic nuclei caused by the excessive NO (NO) production in the brain. This NO overproduction during experimental sepsis is related to the increased interleukin-1² (IL-1²) and the inducible NO synthase (iNOS) in the supraoptic (SON) and paraventricular (PVN) hypothalamic nuclei that synthetize AVP. The increase in NO production in the brain especially after activation of iNOS, may alter mitochondrial bioenergetics and cause neuronal apoptosis in cognitive-related structures such as hypothalamus. Therefore is important to look for drugs to protect the brain against this mitochondrial bionergetic alteration. Since statins present several pleitrópicos effects including anti-inflammatory and anti-oxidant our hypothesis is that simvastatin may reduce cognitive dysfunction in sepsis survival rats by acting as a neuroprotective agent.

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

Please report errors in scientific publications list using this form.