| Grant number: | 13/02661-4 |
| Support Opportunities: | Regular Research Grants |
| Start date: | August 01, 2013 |
| End date: | July 31, 2015 |
| Field of knowledge: | Biological Sciences - Genetics - Human and Medical Genetics |
| Principal Investigator: | João Bosco Pesquero |
| Grantee: | João Bosco Pesquero |
| Host Institution: | Escola Paulista de Medicina (EPM). Universidade Federal de São Paulo (UNIFESP). Campus São Paulo. São Paulo , SP, Brazil |
| City of the host institution: | São Paulo |
Abstract
The hereditary angioedema (HAE) is characterized by repetitive episodes of painful edemas and discomfort which affects mainly the upper and lower extremities, gastrointestinal tract, genitals and face, and it can lead to death by asphyxiation in swelling of upper respiratory tract. The HAE is an autosomal-dominant disorder resulting from mutations in the C1 inhibitor (C1INH) that result in its abnormal levels or functionality (HAE Type I and II, respectively) or the result of other disorders (HAE Type 3) leading to an overproduction of bradykinin (BK), the peptide responsible for edema. C1INH is the main physiologic inhibitor of the contact system, factor XII (FXII) and plasma kallikrein (huPK), which is responsible for BK release. The aim of this project is to standardize the sequencing of 16 target genes of HAE and to investigate the relationship between the mutations in these genes with the response to the standard treatment currently used in the clinics. Thus, genomic DNA will be extracted from HAE patients from peripheral blood cells and PCR will be performed with specifics oligonucleotides to the flanking regions of all exons and followed by sequencing in the last generation technique named IonTorrent. Plasma kallikrein, angiotensin converting enzyme, carboxipeptidase N and aminopeptidases activities will be analyzed by enzyme kinetics. The results of this project will help in the development of new HAE therapies and to determine patients with different responses to the standard treatment used in the clinics. (AU)
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