Key result
48-hour water deprivation significantly increased the depressor response to RVLM microinjection of kynurenate compared to water-replete rats (28.1 vs 5.9 mmHg decrease; P<0.01).
Population
Rats (48-h water-deprived, 24-h water-deprived, and water-replete)
Comparison
Bilateral microinjection of kynurenate into the… vs Water-replete rats
Design
Preclinical
Authors
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Supports RVLM EAA drive in dehydration-induced sympathoexcitation; leaves open translation to human cardiovascular control.
Absolute Event Rate: 28.1% vs 5.9%
p-value: p=<0.01
Water deprivation increases excitatory amino acid drive to the rostral ventrolateral medulla, which helps support blood pressure in rats.
Brooks et al. (2004) studied Water deprivation. Water deprivation vs. Water-replete rats was evaluated on Decrease in arterial pressure following bilateral microinjection of kynurenate into the RVLM (p=<0.01). 48-hour water deprivation significantly increased the depressor response to RVLM microinjection of kynurenate compared to water-replete rats (28.1 vs 5.9 mmHg decrease; P<0.01).
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