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Cardiac and vascular effects of fingolimod: mechanistic basis and clinical implications.

Abstract：

:Fingolimod, a sphingosine-1-phosphate receptor (S1PR) modulator, was the first oral disease-modifying therapy approved for relapsing forms of multiple sclerosis; it reduces autoreactive lymphocytes' egress from lymphoid tissues by down-regulating S1PRs. Sphingosine-1-phosphate signaling is implicated in a range of physiologic functions, and S1PRs are expressed differentially in various tissues, including the cardiovascular system. Modulation of S1PRs on cardiac cells provides an explanation for the transient effects of fingolimod on heart rate and atrioventricular conduction at initiation of fingolimod therapy, and for the mild but more persistent effects on blood pressure observed in some patients on long-term treatment. This review describes the nontherapeutic actions of fingolimod in the context of sphingosine-1-phosphate signaling in the cardiovascular system, as well as providing a summary of the associated clinical implications useful to physicians considering initiation of fingolimod therapy in patients. A transient reduction in heart rate (mean decrease of 8 beats per minute) and, less commonly, a temporary delay in atrioventricular conduction observed in some patients when initiating fingolimod therapy are both due to activation of S1PR subtype 1 on cardiac myocytes. These effects are a reflection of fingolimod first acting as a full S1PR agonist and thereafter functioning as an S1PR antagonist after down-regulation of S1PR subtype 1 at the cell surface. For most individuals, first-dose effects of fingolimod are asymptomatic, but all patients need to be monitored for at least 6 hours after the first dose, in accordance with the label recommendations.

journal_name

Am Heart J

journal_title

American heart journal

authors

Camm J,Hla T,Bakshi R,Brinkmann V

doi

10.1016/j.ahj.2014.06.028

subject

Has Abstract

pub_date

2014-11-01 00:00:00

pages

632-44

issue

5

eissn

0002-8703

issn

1097-6744

pii

S0002-8703(14)00414-1

journal_volume

168

pub_type

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