Results 31 to 40 of about 294,782 (382)

Restricted feeding uncouples circadian oscillators in peripheral tissues from the central pacemaker in the suprachiasmatic nucleus.

open access: yesGenes & Development, 2000
In mammals, circadian oscillators exist not only in the suprachiasmatic nucleus, which harbors the central pacemaker, but also in most peripheral tissues.
F. Damiola   +5 more
semanticscholar   +1 more source

Canonical Wnt signaling promotes pacemaker cell specification of cardiac mesodermal cells derived from mouse and human embryonic stem cells

open access: yesStem Cells, 2020
Cardiac differentiation of embryonic stem cells (ESCs) can give rise to de novo chamber cardiomyocytes and nodal pacemaker cells. Compared with our understanding of direct differentiation toward atrial and ventricular myocytes, the mechanisms for nodal ...
W. Liang   +8 more
semanticscholar   +1 more source

Successful Removal of 15-year-old Pacemaker Leads by Weight and pulley method [PDF]

open access: yesKosin Medical Journal, 2018
Extraction of old pacemaker leads remains a complex procedure owing to fibrotic encapsulation and lead adhesions. We report a case of extraction of 15-year-old pacemaker leads by weight and pulley method.
Hyun-Woo Kim   +7 more
doaj   +1 more source

Modeling circadian and sleep-homeostatic effects on short-term interval timing [PDF]

open access: yes, 2015
Short-term interval timing i.e., perception and action relating to durations in the seconds range, has been suggested to display time-of-day as well as wake dependent fluctuations due to circadian and sleep-homeostatic changes to the rate at which an ...
Aritake, Sayaka   +7 more
core   +2 more sources

Prototypical pacemaker neurons interact with the resident microbiota

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Significance Here, we discover prototypical pacemaker neurons in the ancient cnidarian Hydra and provide evidence for a direct interaction of these neurons with the commensal microbiota.
A. Klimovich   +14 more
semanticscholar   +1 more source

Long-term follow-up of the patients with pacemaker leads implanted through persistent left superior vena cava [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo
Introduction/Objective. Persistent left superior vena cava (PLSVC) is the most common congenital malformation of the thoracic venous system and may often complicate cardiac implantable electronic device (CIED) lead implantation. The purpose of this study
Branković Nemanja S.   +8 more
doaj   +1 more source

Splice variants of DOMINO control Drosophila circadian behavior and pacemaker neuron maintenance. [PDF]

open access: yes, 2019
Circadian clocks control daily rhythms in behavior and physiology. In Drosophila, the small ventral lateral neurons (sLNvs) expressing PIGMENT DISPERSING FACTOR (PDF) are the master pacemaker neurons generating locomotor rhythms.
Cai, Yao   +8 more
core   +1 more source

Incidence of pacing‐induced cardiomyopathy in pacemaker‐dependent patients is lower with leadless pacemakers compared to transvenous pacemakers

open access: yesCardiovascular Electrophysiology, 2020
Frequent right AQ4ventricular pacing (≥40%) with a transvenous pacemaker (TVP) is associated with the risk of pacing‐induced cardiomyopathy (PICM). Leadless pacemakers (LPs) have distinct physical and mechanical differences from TVP.
Reynaldo Sanchez   +12 more
semanticscholar   +1 more source

Bidirectional Cardio-Respiratory Interactions in Heart Failure

open access: yesFrontiers in Physiology, 2018
We investigated cardio-respiratory coupling in patients with heart failure by quantification of bidirectional interactions between cardiac (RR intervals) and respiratory signals with complementary measures of time series analysis.
Nikola N. Radovanović   +6 more
doaj   +1 more source

Experimental analysis and computational modeling of interburst intervals in spontaneous activity of cortical neuronal culture [PDF]

open access: yes, 2011
Rhythmic bursting is the most striking behavior of cultured cortical networks and may start in the second week after plating. In this study, we focus on the intervals between spontaneously occurring bursts, and compare experimentally recorded values with
Feber, J. le   +3 more
core   +2 more sources

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