KCNK16欠損はマウスの身体成長を悪化させ、食事とは無関係に脂質蓄積を減少させる
KCNK16 Deficiency Deteriorates Body Growth and Diet-Independently Decreases Lipid Accumulation in Mice.
Früh Olena, Winkler Jennifer, Jäger Jana M, Sun Rongwan ほか — Comprehensive Physiology
AI要約
本研究は、KCNK16欠損マウスが食事に関わらず身体成長と体重が減少し、脂肪蓄積も低下することを示しました。エネルギー消費の変化や初期インスリン分泌へのわずかな影響はあったものの、血糖値の全体的な調節は正常に保たれていました。
AI生成の要約です — 原文を読む
Abstract（原文）
BACKGROUND: The potassium channel KCNK16 (TALK-1) is highly expressed in murine and human pancreas and has been implicated in regulating β-cell electrical excitability and glucose-stimulated insulin secretion (GSIS). Genetic studies have linked KCNK16 variants to type 2 diabetes (T2D), yet its physiological role in vivo remains largely unexplored. We aimed to characterize the cardiometabolic functions of KCNK16 in mice. METHODS: Male constitutive Kcnk16-deficient mice (KCNK16) were characterized on standard (STD) or high-fat diet (HFD) for up to 21 weeks. Phenotyping included measurements of body weight and composition, echocardiography, blood pressure, and indirect calorimetry. Insulin and glucose homeostasis were assessed by tolerance tests and glucose clamp studies. RESULTS: KCNK16 mice showed lower weight gain, less fat and lean mass, reduced diet intake, and shorter body length across diets. Glucose tolerance, insulin sensitivity, hepatic lipid content, and cardiac function remained largely unaffected, except for lower systolic blood pressure under STD. During HFD, KCNK16 mice exhibited increased energy expenditure but attenuated first-phase insulin secretion. Pancreatic insulin content was elevated while circulating IGF-1 was diminished. CONCLUSION: Kcnk16 deficiency reduced somatic growth and body weight and altered energy expenditure, accompanied by modest changes in insulin secretion dynamics, while glucose homeostasis remained preserved.
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出典: PubMed (PMID: 42210668)。AI要約は情報提供のみを目的とし、医療的アドバイスを構成するものではありません。