Connexin-36 protects against suddent infant death syndrome

Pérez Atencio, L,. and Ardaiz, M. and Barios Heredero, Juan Antonio and González Nieto, Daniel and Barrio, L.C. (2015). Connexin-36 protects against suddent infant death syndrome. In: "V Reunión Española de Canales Iónicos (RECI)", 04/10/2015 - 06/10/2015, Barcelona, Spain. p. 59.

Description

Title: Connexin-36 protects against suddent infant death syndrome
Author/s:
  • Pérez Atencio, L,.
  • Ardaiz, M.
  • Barios Heredero, Juan Antonio
  • González Nieto, Daniel
  • Barrio, L.C.
Item Type: Presentation at Congress or Conference (Article)
Event Title: V Reunión Española de Canales Iónicos (RECI)
Event Dates: 04/10/2015 - 06/10/2015
Event Location: Barcelona, Spain
Title of Book: V Reunión Española de Canales Iónicos (RECI)
Date: 2015
Subjects:
Faculty: Centro de Tecnología Biomédica (CTB) (UPM)
Department: Tecnología Fotónica y Bioingeniería
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The sudden infant death syndrome (SIDS) is the main cause of postneonatal infant death; however the etiology of SIDS remains ill defined. The hypothesis that SIDS, or a subset of SIDS, is due to an abnormal brainstem mechanism is one of the current leading hypotheses on SIDS etiology. The brainstem is essential for cardiac and respiratory function, controlling autonomic and homeostatic responses including breathing, central chemosensitivity, heartbeat and blood pressure, all mechanisms that are thought to be involved in SIDS. Connexin-36 (Cx36), the principal component of neuron-to-neuron channels that form the electrical synapses, is present in the specific neural populations of brainstem region involved in the CO2 chemoreception and respiratory control, and its expression is unregulated during this critical period of life. Accordingly, we postulate that Cx36 would be a key element in the pathogenesis of SIDS. To address this issue we have studied how the genetic suppression of Cx36 expression affects to the respiratory pacemaker, central chemoreflexes, cardiorespiratory coupling, and risk for SIDS. Mice lacking Cx36 at postnatal day 14 showed in comparison with control wild-type greater variability in the respiratory rhythmicity, abnormally enhanced ventilatory responses to hypoxia and hypercapnia, more cardiorespiratory phase synchronization and less respiratory sinus arrhythmia. A combination of low O2 and high CO2 content in inspired air was used as exogenous stressor of SIDS; under these conditions all wild-type mice survived while the 40% of Cx36-knockout animals succumbed by respiratory failure.

Funding Projects

TypeCodeAcronymLeaderTitle
Madrid Regional GovernmentNEUROTEC-S2010/BMD-2460UnspecifiedUnspecifiedUnspecified
Government of SpainBFU2012-338231UnspecifiedMinisterio de Economía y CompetitividadUnspecified

More information

Item ID: 42210
DC Identifier: http://oa.upm.es/42210/
OAI Identifier: oai:oa.upm.es:42210
Deposited by: Memoria Investigacion
Deposited on: 10 May 2017 16:15
Last Modified: 10 May 2017 16:15
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