Abstract
Recent research findings provide evidence for Alzheimers disease-related changes in brain diseases, such as normal pressure hydrocephalus and traumatic brain injury, and in glaucoma at the level of the retinal ganglion cells. This is a group of diseases that affect central nervous system tissue and are characterized by elevation of intracranial or intraocular pressure and/or local shear stress and strain. This strengthens the possibility that Alzheimer-type changes in these diseases may result at least in part from exposure of central nervous system tissue to elevated mechanical load. As activities or diseases with significant Valsalva effort can generate increased intracranial pressures, we hypothesize that individuals who frequently perform strong Valsalva maneuvers (e.g., long hours of repetitive heavy lifting, sequences of blows during the playing of a wind instrument, forceful and repetitive cough, bearing-down efforts during parturition) may be more susceptible to developing Alzheimers disease. In this paper, we discuss three hypotheses about the mechanisms by which extensive use of the Valsalva maneuver might contribute to the neuropathogenesis of Alzheimers disease: via mechanical stress-induced events in the hippocampus and/or via changes in the secretory process of the choroid plexus and/or via hemodynamic changes in cerebral blood flow. If confirmed, this hypothesis could have implications in clinical practice.
Keywords: Valsalva maneuver, Alzheimer's disease, Intracranial pressure, Intraocular pressure, Mechanical load, Hippocampus, Choroid plexus, Cerebral blood flow
Current Alzheimer Research
Title: The Valsalva Maneuver and Alzheimers Disease: Is there a link?
Volume: 6 Issue: 1
Author(s): Peter Wostyn, Kurt Audenaert and Peter Paul De Deyn
Affiliation:
Keywords: Valsalva maneuver, Alzheimer's disease, Intracranial pressure, Intraocular pressure, Mechanical load, Hippocampus, Choroid plexus, Cerebral blood flow
Abstract: Recent research findings provide evidence for Alzheimers disease-related changes in brain diseases, such as normal pressure hydrocephalus and traumatic brain injury, and in glaucoma at the level of the retinal ganglion cells. This is a group of diseases that affect central nervous system tissue and are characterized by elevation of intracranial or intraocular pressure and/or local shear stress and strain. This strengthens the possibility that Alzheimer-type changes in these diseases may result at least in part from exposure of central nervous system tissue to elevated mechanical load. As activities or diseases with significant Valsalva effort can generate increased intracranial pressures, we hypothesize that individuals who frequently perform strong Valsalva maneuvers (e.g., long hours of repetitive heavy lifting, sequences of blows during the playing of a wind instrument, forceful and repetitive cough, bearing-down efforts during parturition) may be more susceptible to developing Alzheimers disease. In this paper, we discuss three hypotheses about the mechanisms by which extensive use of the Valsalva maneuver might contribute to the neuropathogenesis of Alzheimers disease: via mechanical stress-induced events in the hippocampus and/or via changes in the secretory process of the choroid plexus and/or via hemodynamic changes in cerebral blood flow. If confirmed, this hypothesis could have implications in clinical practice.
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Cite this article as:
Wostyn Peter, Audenaert Kurt and De Deyn Paul Peter, The Valsalva Maneuver and Alzheimers Disease: Is there a link?, Current Alzheimer Research 2009; 6 (1) . https://dx.doi.org/10.2174/156720509787313943
DOI https://dx.doi.org/10.2174/156720509787313943 |
Print ISSN 1567-2050 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5828 |
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