@article{oai:jrckicn.repo.nii.ac.jp:00000844,
 author = {OKI, Masami and Jesmin, Subrina and 荒井, サブリナ and Islam, Majedul and Mowa, Chishimba Nathan and Khatun, Tanzila and SIMOJO, Nobutake and 下條, 信威 and SAKURAMOTO, Hideaki and 櫻本, 秀明 and KAMIYAMA, Junko and 神山, 純子 and KAWANO, Satoru and 河野, 了 and 宮内, 卓 and MIYAUCHI, Takashi and MIZUTANI, Taro and 水谷, 太郎},
 issue = {2},
 journal = {Life sciences},
 month = {Nov},
 note = {application/pdf, Aims
Sepsis is a cluster of heterogeneous syndromes associated with progressive endotoxemic developments, ultimately leading to damage of multiple organs, including the heart. However, the pathogenesis of sepsis-induced myocardial dysfunction is still not fully understood. The present study is the first to examine alterations in expression of key angiogenic signaling system mediated by vascular endothelial growth factor (VEGF) in septic heart and the effects of endothelin dual blocker (ETDB) on it.

Main methods
Normal Wistar rats were either administered with: a) vehicle only (control group), b) lipopolysaccharide only (LPS: 15 mg/kg) and then sacrificed at different time points (1 h, 3 h, 6 h and 10 h), and c) the last group was co-administered with LPS and ETDB (SB-209670, 1 mg/kg body weight) for 6 h and then sacrificed.

Key findings
Administration of LPS resulted in increases in levels of: a) serum tumor necrosis factor (TNF)-α, b) serum VEGF and c) serum endothelin (ET)-1 levels accompanied by up-regulation of cardiac VEGF and its downstream angiogenic signaling molecules. While cardiac TNF-α level was unchanged among experimental groups, cardiac ET-1 level was significantly higher in LPS-administered group.

Significance
We conclude that elevation in VEGF angiogenic signaling may be triggered by diminished oxygenation in the myocardium following LPS administration as a consequence of sepsis-induced microvascular dysfunction. Because of this cardiac dysfunction, oxygen supply may be inadequate at microregional level to support the normal heart metabolism and function. ETDB at 6 h further increased the elevated levels of VEGF angiogenic signaling in endotoxemic heart.},
 pages = {364--369},
 title = {Dual blockade of endothelin action exacerbates up-regulated VEGF angiogenic signaling in the heart of lipopolysaccharide-induced endotoxemic rat model},
 volume = {118},
 year = {2014},
 yomi = {アライ, サブリナ and シモジョウ, ノブタケ and サクラモト, ヒデアキ and カミヤマ, ジュンコ and カワノ, サトル and ミヤウチ, タカシ and ミズタニ, タロウ}
}