Blood pressure pulsations modulate central neuronal activity via mechanosensitive ion channels
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Blood pressure pulsations modulate central neuronal activity via mechanosensitive ion channels. / Jammal Salameh, Luna; Bitzenhofer, Sebastian H; Hanganu-Opatz, Ileana L; Dutschmann, Mathias; Egger, Veronica.
in: SCIENCE, Jahrgang 383, Nr. 6682, 02.02.2024, S. eadk8511.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Blood pressure pulsations modulate central neuronal activity via mechanosensitive ion channels
AU - Jammal Salameh, Luna
AU - Bitzenhofer, Sebastian H
AU - Hanganu-Opatz, Ileana L
AU - Dutschmann, Mathias
AU - Egger, Veronica
PY - 2024/2/2
Y1 - 2024/2/2
N2 - The transmission of the heartbeat through the cerebral vascular system causes intracranial pressure pulsations. We discovered that arterial pressure pulsations can directly modulate central neuronal activity. In a semi-intact rat brain preparation, vascular pressure pulsations elicited correlated local field oscillations in the olfactory bulb mitral cell layer. These oscillations did not require synaptic transmission but reflected baroreceptive transduction in mitral cells. This transduction was mediated by a fast excitatory mechanosensitive ion channel and modulated neuronal spiking activity. In awake animals, the heartbeat entrained the activity of a subset of olfactory bulb neurons within ~20 milliseconds. Thus, we propose that this fast, intrinsic interoceptive mechanism can modulate perception-for example, during arousal-within the olfactory bulb and possibly across various other brain areas.
AB - The transmission of the heartbeat through the cerebral vascular system causes intracranial pressure pulsations. We discovered that arterial pressure pulsations can directly modulate central neuronal activity. In a semi-intact rat brain preparation, vascular pressure pulsations elicited correlated local field oscillations in the olfactory bulb mitral cell layer. These oscillations did not require synaptic transmission but reflected baroreceptive transduction in mitral cells. This transduction was mediated by a fast excitatory mechanosensitive ion channel and modulated neuronal spiking activity. In awake animals, the heartbeat entrained the activity of a subset of olfactory bulb neurons within ~20 milliseconds. Thus, we propose that this fast, intrinsic interoceptive mechanism can modulate perception-for example, during arousal-within the olfactory bulb and possibly across various other brain areas.
KW - Rats
KW - Animals
KW - Blood Pressure
KW - Neurons/physiology
KW - Synaptic Transmission
KW - Olfactory Bulb/physiology
KW - Ion Channels
U2 - 10.1126/science.adk8511
DO - 10.1126/science.adk8511
M3 - SCORING: Journal article
C2 - 38301001
VL - 383
SP - eadk8511
JO - SCIENCE
JF - SCIENCE
SN - 0036-8075
IS - 6682
ER -