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Seasonal changes in cerebrospinal fluid (CSF) 5-hydroxyindoleacetic acid (5-HIAA) concentrations were assessed on multiple occasions in 103 free-ranging male rhesus macaques (Macaca mulatta). At the time of sampling subjects ranged between the ages of 2 and 6 years. CSF samples were collected between the hours of 0900 and 1600 throughout the Fall, Winter, and Spring from 1990 through 1994. Data were analyzed in a general linear mixed model with random intercepts. Results indicated that CSF 5-HIAA concentrations decreased with age. CSF 5-HIAA concentrations were significantly increased in the Fall (October and November), which is the height of the breeding season, with no evidence of differences between Winter and Spring. There was also some evidence that the seasonal variation in CSF 5-HIAA concentrations was blunted in younger, more immature subjects.
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C S Price, and
S E Shoaf, and
P T Mehlman, and
S J Suomi, and
M Linnoila, and
J D Higley
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Psychiatry research,
K B Zajicek, and
C S Price, and
S E Shoaf, and
P T Mehlman, and
S J Suomi, and
M Linnoila, and
J D Higley
September 1997,
Psychiatry research,
K B Zajicek, and
C S Price, and
S E Shoaf, and
P T Mehlman, and
S J Suomi, and
M Linnoila, and
J D Higley
January 2002,
Brain, behavior and evolution,
K B Zajicek, and
C S Price, and
S E Shoaf, and
P T Mehlman, and
S J Suomi, and
M Linnoila, and
J D Higley
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The American journal of psychiatry,
K B Zajicek, and
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M Linnoila, and
J D Higley
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CNS spectrums,
K B Zajicek, and
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J D Higley
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K B Zajicek, and
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June 1979,
Neurology,
K B Zajicek, and
C S Price, and
S E Shoaf, and
P T Mehlman, and
S J Suomi, and
M Linnoila, and
J D Higley
March 1977,
Headache,
K B Zajicek, and
C S Price, and
S E Shoaf, and
P T Mehlman, and
S J Suomi, and
M Linnoila, and
J D Higley
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Acta vitaminologica et enzymologica,
K B Zajicek, and
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P T Mehlman, and
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J D Higley
February 1991,
Biological psychiatry,
