Heat Stress in Rat Adriamycin Cardiomyopathy: Heat Shock Protein 25 and Myosin Accumulation
-
- Strauss Mirian
- Sección de Biología Celular, Instituto de Medicina Tropical, Facultad de Medicina Universidad Central de Venezuela
-
- Rada Alegna
- Sección de Biología Celular, Instituto de Medicina Tropical, Facultad de Medicina Universidad Central de Venezuela
-
- Tejero Félix
- Instituto de Zoología y Ecología Tropical, Facultad de Ciencias. Universidad Central de Venezuela
-
- Hermoso Tomás
- Sección de Bioquímica de Parásitos, Instituto de Medicina Tropical, Facultad de Medicina, Universidad Central de Venezuela
この論文をさがす
説明
In order to evaluate the effects of hyperthermia on adriamycin cardiomyopathy and its relationship with heat shock protein induction and myosin accumulation, female Sprague-Dawley rats (21-24 days) were randomized into four groups: the control, adriamycin, temperature and temperature-adriamycin groups. Adriamycin was injected i.v. at a dose of 27 mg/Kg (0.1 ml). The rats were exposed to a temperature of 45ºC for 35 min, followed by a recovery (1 h) at room temperature prior to adriamycin treatment. Body weight was recorded weekly. The thickness of the ventricular wall and percentage of cellular damage were biometrically and ultrastructurally evaluated, respectively. Heat shock protein 25 and myosin accumulation were determined through Western blot analysis. The determinations were carried out monthly until the third month after treatment. At eight and twelve weeks after treatment, the thickness of the ventricular wall seemed to decrease in the adriamycin-treated rats in relation to the other groups. An electron microscopic analysis of the adriamycin group's left ventricular wall samples, showed more sarcomeric changes and loss of myofibrils than the control, temperature and temperature-adriamycin groups. At 24 hours after treatment with adriamycin, higher levels of heat shock protein 25 and myosin were observed (week 0) in the temperature-adriamycin group than in the control and adriamycin groups (4, 8 and 12 weeks). Hyperthermia was confirmed by a multivariate approach to induce heat shock protein 25 and myosin, which would strengthen cardiac-sarcomeric myosin arrangement. <br>
収録刊行物
-
- Journal of Toxicologic Pathology
-
Journal of Toxicologic Pathology 23 (4), 235-243, 2010
日本毒性病理学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282679392868096
-
- NII論文ID
- 10030979575
-
- NII書誌ID
- AN10232280
-
- COI
- 1:STN:280:DC%2BC387ntF2mtQ%3D%3D
-
- ISSN
- 1881915X
- 09149198
-
- NDL書誌ID
- 10966144
-
- PubMed
- 22272033
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可