Journal of molecular and cellular cardiology · 2019
Cardiac expression of the microsomal triglyceride transport protein protects the heart function during ischemia.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Klevstig Martina, Arif Muhammad, Mannila Maria, Svedlund Sara, Mardani Ismena, Ståhlman Marcus, Andersson Linda, Lindbom Malin, Miljanovic Azra, Franco-Cereceda Anders, Eriksson Per, Jeppsson Anders, Gan Li-Ming, Levin Malin, Mardinoglu Adil, Ehrenborg Ewa, Borén Jan
Аннотация
AIMS: The microsomal triglyceride transport protein (MTTP) is critical for assembly and secretion of apolipoprotein B (apoB)-containing lipoproteins and is most abundant in the liver and intestine. Surprisingly, MTTP is also expressed in the heart. Here we tested the functional relevance of cardiac MTTP expression.
MATERIALS AND METHODS: We combined clinical studies, advanced expression analysis of human heart biopsies and analyses in genetically modified mice lacking cardiac expression of the MTTP-A isoform of MTTP.
RESULTS: Our results indicate that lower cardiac MTTP expression in humans is associated with structural and perfusion abnormalities in patients with ischemic heart disease. MTTP-A deficiency in mice heart does not affect total MTTP expression, activity or lipid concentration in the heart. Despite this, MTTP-A deficient mice displayed impaired cardiac function after a myocardial infarction. Expression analysis of MTTP indicates that MTTP expression is linked to cardiac function and responses in the heart.
CONCLUSIONS: Our results indicate that MTTP may play an important role for the heart function in conjunction to ischemic events.
MATERIALS AND METHODS: We combined clinical studies, advanced expression analysis of human heart biopsies and analyses in genetically modified mice lacking cardiac expression of the MTTP-A isoform of MTTP.
RESULTS: Our results indicate that lower cardiac MTTP expression in humans is associated with structural and perfusion abnormalities in patients with ischemic heart disease. MTTP-A deficiency in mice heart does not affect total MTTP expression, activity or lipid concentration in the heart. Despite this, MTTP-A deficient mice displayed impaired cardiac function after a myocardial infarction. Expression analysis of MTTP indicates that MTTP expression is linked to cardiac function and responses in the heart.
CONCLUSIONS: Our results indicate that MTTP may play an important role for the heart function in conjunction to ischemic events.