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Stress and Its Role in Sympathetic Nervous System Activation in Hypertension and the Metabolic Syndrome.

06:00 EST 29th January 2011 | BioPortfolio

Summary of "Stress and Its Role in Sympathetic Nervous System Activation in Hypertension and the Metabolic Syndrome."

Stress in several guises is evident in individuals with hypertension and in those with the metabolic syndrome and may account, at least in part, for the extent and pattern of sympathetic nervous activation. Importantly, elevated activity of the sympathetic nervous system is related to the development of obesity-related illnesses including hypertension, insulin resistance, and renal, cardiac, and vascular impairment. Notably, evidence of subclinical organ damage is evident even in young, normotensive, overweight persons, thereby reinforcing the need to develop and implement effective early intervention.

Affiliation

Human Neurotransmitters Laboratory, Baker IDI Heart & Diabetes Institute, PO Box 6492, St Kilda Road Central, Melbourne, Vic, 8008, Australia, Elisabeth.lambert@bakeridi.edu.au.

Journal Details

This article was published in the following journal.

Name: Current hypertension reports
ISSN: 1534-3111
Pages:

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Medical and Biotech [MESH] Definitions

The thoracolumbar division of the autonomic nervous system. Sympathetic preganglionic fibers originate in neurons of the intermediolateral column of the spinal cord and project to the paravertebral and prevertebral ganglia, which in turn project to target organs. The sympathetic nervous system mediates the body's response to stressful situations, i.e., the fight or flight reactions. It often acts reciprocally to the parasympathetic system.

The enteric, parasympathetic, and sympathetic nervous systems taken together. Generally speaking, the autonomic nervous system regulates the internal environment during both peaceful activity and physical or emotional stress. Autonomic activity is controlled and integrated by the central nervous system, especially the hypothalamus and the solitary nucleus, which receive information relayed from VISCERAL AFFERENTS; these and related central and sensory structures are sometimes (but not here) considered to be part of the autonomic nervous system itself.

Cells that store epinephrine secretory vesicles. During times of stress, the nervous system signals the vesicles to secrete their hormonal content. Their name derives from their ability to stain a brownish color with chromic salts. Characteristically, they are located in the adrenal medulla and paraganglia (PARAGANGLIA, CHROMAFFIN) of the sympathetic nervous system.

The nervous system outside of the brain and spinal cord. The peripheral nervous system has autonomic and somatic divisions. The autonomic nervous system includes the enteric, parasympathetic, and sympathetic subdivisions. The somatic nervous system includes the cranial and spinal nerves and their ganglia and the peripheral sensory receptors.

Diseases of the parasympathetic or sympathetic divisions of the AUTONOMIC NERVOUS SYSTEM; which has components located in the CENTRAL NERVOUS SYSTEM and PERIPHERAL NERVOUS SYSTEM. Autonomic dysfunction may be associated with HYPOTHALAMIC DISEASES; BRAIN STEM disorders; SPINAL CORD DISEASES; and PERIPHERAL NERVOUS SYSTEM DISEASES. Manifestations include impairments of vegetative functions including the maintenance of BLOOD PRESSURE; HEART RATE; pupil function; SWEATING; REPRODUCTIVE AND URINARY PHYSIOLOGY; and DIGESTION.

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