Abstract:
:Activation of mineralocorticoid receptor (MR) is evoked by aldosterone, and it induces hypertension and cardiovascular disease when it's concomitant with excessive salt loading. We have proposed the notion of "MR-associated hypertension", in which add-on therapy of MR blockers is effective even though serum aldosterone level is within normal range. To elucidate its underlying molecular mechanism, we focused on the effect of epidermal growth factor receptor (EGFR)/extracellular signal-regulated kinase (ERK) activation on MR activity. Epidermal growth factor (EGF) administration increased MR transcriptional activity through EGFR/ERK pathway and increased protein level by counteracting MR ubiquitylation in vitro. EGF administration in vivo also increased MR protein level and target gene expression in kidney, which were decreased by EGFR inhibitor. In addition, the administration of EGFR inhibitor lowered systolic blood pressure and MR activity in DOCA/salt-treated mice. In conclusion, EGFR/ERK pathway activation is considered as one of the underlying mechanisms of aberrant MR activation and EGFR/ERK pathway blockade could be an alternative approach for the prevention of MR-related cardiovascular events.
journal_name
Mol Cell Endocrinoljournal_title
Molecular and cellular endocrinologyauthors
Mitsuishi Y,Shibata H,Kurihara I,Kobayashi S,Yokota K,Murai-Takeda A,Hayashi T,Jo R,Nakamura T,Morisaki M,Itoh Hdoi
10.1016/j.mce.2018.01.007subject
Has Abstractpub_date
2018-09-15 00:00:00pages
89-99eissn
0303-7207issn
1872-8057pii
S0303-7207(18)30017-0journal_volume
473pub_type
杂志文章abstract::Nuclear Receptors form a superfamily of 48 transcription factors that exhibit a plethora of functions in steroid hormone signaling, regulation of metabolism, circadian rhythm and cellular differentiation. In this review, we describe our current knowledge on the role of Nuclear Receptors in atherosclerosis, which is a ...
journal_title:Molecular and cellular endocrinology
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journal_title:Molecular and cellular endocrinology
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journal_title:Molecular and cellular endocrinology
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journal_title:Molecular and cellular endocrinology
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journal_title:Molecular and cellular endocrinology
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