1. Noradrenergic activity in anticipatory nausea.
- Author
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Fetting, JH, Stefanek, ME, Sheidler, VR, Elsworth, JD, Piantadosi, S, and Roth, RH
- Subjects
Humans ,Neoplasms ,Nausea ,Vomiting ,Anticipatory ,Norepinephrine ,Methoxyhydroxyphenylglycol ,Clonidine ,Receptors ,Adrenergic ,Antineoplastic Combined Chemotherapy Protocols ,Administration ,Oral ,Double-Blind Method ,Conditioning ,Classical ,Adult ,Middle Aged ,Female ,Male ,ANTICIPATORY NAUSEA AND VOMITING ,NOREPINEPHRINE ,3-METHOXY-4-HYDROXYPHENYLGLYCOL ,CLONIDINE ,Psychiatry ,Medical and Health Sciences ,Psychology and Cognitive Sciences - Abstract
Two studies were conducted to examine the hypothesis that noradrenergic activity is a cause of the anticipatory nausea associated with cancer chemotherapy. In the first study concentrations of plasma 3-methoxy-4-hydroxyphenyl-glycol (MHPG) on day 1 of cycle 5 of initial chemotherapy were significantly higher in patients with than without anticipatory nausea. To determine whether elevated MHPG reflected a clinically significant causative role for noradrenergic activity in anticipatory nausea, we conducted a randomized, double-blind, placebo-controlled, crossover trial of clonidine for anticipatory nausea. At a dose of clonidine that produced significant side effects and reductions of plasma MHPG, anticipatory nausea was improved only marginally. These studies do not support a causative role for noradrenergic activity in anticipatory nausea that can be reduced by clonidine with an acceptable therapeutic index.
- Published
- 1992