病型分類を模擬した慢性閉塞性肺疾患(COPD)モデル動物に対する甲状腺ホルモン(T<sub>3</sub>)経気管投与の影響

  • 髙橋 宜暉
    熊本大・院薬・遺伝子機能応用学 熊本大・リーディング大学院・HIGO
  • 中嶋 竜之介
    熊本大・院薬・遺伝子機能応用学
  • 那須 葵
    熊本大・院薬・遺伝子機能応用学 熊本大・リーディング大学院・HIGO
  • 林 恵
    熊本大・院薬・遺伝子機能応用学
  • 岸本 朋樹
    熊本大・院薬・遺伝子機能応用学
  • Suico Mary Ann
    熊本大・院薬・遺伝子機能応用学
  • 甲斐 広文
    熊本大・院薬・遺伝子機能応用学
  • 首藤 剛
    熊本大・院薬・遺伝子機能応用学

書誌事項

タイトル別名
  • The effect of intratracheal administration of thyroid hormone (T<sub>3</sub>) in chronic obstructive pulmonary disease (COPD) mouse model simulating disease type classification.

抄録

<p>【Purpose】</p><p>COPD is a refractory pulmonary disease characterized by bronchitis, emphysema and mucus stasis. Because COPD is a multifactorial disease and represents various symptoms for each patient, previous studies which regard COPD as a single disease have limits. Therefore, to establish personalized medicine for COPD we need research developments based on phenotype or endotype classification. Here, I focused on T3 which has long been known to act as an essential factor for development and growth in the lung. This study aims to elucidate the pathophysiological role of T3 using COPD mouse model simulating disease type classification (emphysema- or airway-dominant). </p><p>【Methods &#x26; results】</p><p>In this study, I chose elastase-induced model and C57BL/6-βENaC-Tg mice as mouse models of emphysema- and airway-dominant COPD, respectively. I intratracheally administered T3 (40 or 80 μg/kg, every other day) to elastase-induced mice for 21 days or C57BL/6-βENaC-Tg mice for 12 days. In elastase-induced model, T3 treatment improved emphysema and, partially, the respiratory function with upregulation of the expression of Ppargc1a (the master regulator of mitochondrial biogenesis) and Gclm (an oxidative stress-related factor) after one T3 injection. On the other hand, in C57BL/6-βENaC-Tg mice T3 treatment did not improve COPD pathology.</p><p>【Discussion】</p><p>These results emphasize the importance of research developments based on phenotype or endotype classification considering that T3 effect is different between two COPD models.</p>

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