Up-regulation of angiotensin-converting enzyme and angiotensin II type 1 receptor in irradiated rats

被引:14
|
作者
Ferreira-Machado, Samara Cristina [1 ,2 ,3 ]
Rocha, Nazareth De Novaes [5 ]
Mencalha, Andre Luiz [3 ]
Barbosa De Melo, Luiz Dione [4 ]
Salata, Camila [2 ]
Ribeiro, Andreia Fortes [2 ]
Torres, Thiago Da Silva [6 ]
Mandarim-De-Lacerda, Carlos Alberto [6 ]
Canary, Paulo Cesar [7 ]
De Freitas Peregrino, Antonio Augusto [2 ]
Goncalves Magalhaes, Luis Alexandre [2 ]
Cabral-Neto, Januario Bispo [3 ]
Dealmeida, Carlos Eduardo [2 ]
机构
[1] Univ Fed Fluminense, Dept Biol Geral GBG, Lab Radiobiol & Radiomet, BR-24020140 Niteroi, RJ, Brazil
[2] Univ Fed Rio de Janeiro, Dept Biofis & Biomet, Lab Ciencias Radiol, Rio De Janeiro, Brazil
[3] Univ Fed Rio de Janeiro, CCS, Lab Controle Expressao Genica, Inst Biofis Carlos Chagas Filho, Rio De Janeiro, Brazil
[4] Univ Fed Fluminense, Inst Fed Educ Ciencia & Tecnol Rio de Janeiro, Genet Mol Lab, BR-24020140 Niteroi, RJ, Brazil
[5] Univ Fed Fluminense, Dept Fisiol & Farmacol, BR-24020140 Niteroi, RJ, Brazil
[6] Univ Fed Rio de Janeiro, Inst Biol, Lab Morfomet & Morfol Cardiovasc, Rio De Janeiro, Brazil
[7] Univ Fed Rio de Janeiro, Hosp Univ Clementino Fraga Filho, Serv Radioterapia, Fac Med,Dept Radiol, BR-21941 Rio De Janeiro, Brazil
关键词
GROWTH-FACTOR-BETA; INDUCED HEART-DISEASE; LOCAL IONIZING IRRADIATION; MYOCARDIAL-INFARCTION; BREAST-CANCER; FIBROSIS; SYSTEM; ECHOCARDIOGRAPHY; FACTOR-BETA(1); RADIOTHERAPY;
D O I
10.3109/09553002.2010.492489
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Material and methods: Male Wistar rats were irradiated with a single dose of radiation (0, 5, 10 and 15 Gray [Gy]) delivered directly to the heart and the molecular evaluations were performed at various times post-irradiation (two days, 15 days and four months). The expression of ACE, AT1, proc-I and TGF-beta 1 were analysed using Real Time-Polymerase Chain Reaction (RT-PCR) and/or Western blotting. Cardiac structural and functional alterations were investigated at the four-month time point by echocardiography and by quantitative methods (stereology). Results: Rats irradiated with 15 Gy showed a modest reduction in the ejection fraction. Cardiac proc-I, TGF-beta 1, ACE and AT1 were also measurably increased. Conclusions: Irradiated rat hearts show simultaneous elevations in renin-angiotensin system components AT1 and ACE and cardiac remodeling markers proc-I and TGF-beta 1.
引用
收藏
页码:880 / 887
页数:8
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