ArticlePhysiological reports2016
Modulation of sphingosine receptors influences circadian pattern of cardiac autonomic regulation.
Article in Physiological reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Modulation of sphingosine receptors influences circadian pattern of cardiac autonomic regulation.Physiological reports · 2016Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Fingolimod is an oral sphingosine-1-phospate (S1P) receptor modulator for the treatment of relapsing-remitting multiple sclerosis (RRMS). In addition to therapeutic effects on lymphoid and neural tissue, fingolimod influences cardiovascular system by specific S1P-receptor modulation. The effects of S1P-receptor modulation on the endogenous circadian pattern of cardiac autonomic regulation (CAR), however, are not known. We examined the effects of fingolimod on the circadian pattern of CAR Ambulatory 24-h ECG recordings were undertaken in 27 RRMS patients before fingolimod (baseline), at the day of fingolimod initiation (1D) and after 3 months of fingolimod treatment (3M). The mean time between two consecutive R-peaks (RR-interval) and mean values for measures of heart rate variability (HRV) in time- and frequency domain were calculated from ECG recording at daytime and nighttime. The mean night:day-ratio of RR-interval was 1.23 ± 0.12 at baseline, decreased temporarily at 1D (1.16 ± 0.12; P < 0.01) and was higher at 3M (1.32 ± 0.11; P < 0.001) than at baseline. The night:day-ratio of HRV parameters reflecting parasympathetic cardiac regulation (pNN50, rMSSD, HFnu) decreased at 1D but recovered back to baseline at 3M (P < 0.05 for all). On the other hand, the night:day-ratio of TP, a parameter reflecting overall HRV gradually decreased and was lower at 3M than at baseline (P < 0.05). Our findings suggest that physiological relation between the circadian pattern of RR-interval and overall HRV as well as parasympathetic cardiac regulation becomes uncoupled during fingolimod treatment. In addition, fingolimod shifts the circadian equilibrium of CAR toward greater daytime dominance of overall HRV Accordingly, S1P-receptor modulation influences circadian pattern of CAR.
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