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Disturbances of water homeostasis have frequently been reported in schizophrenia. Water homeostasis is regulated by arginine vasopressin (AVP), the renin-angiotensin system and natriuretic hormones. The aim of this study was to determine the activity of the central renin-angiotensin system in schizophrenia by measuring levels of angiotensin-converting enzyme (ACE) in the cerebrospinal fluid (CSF) and blood in 14 in-patients with schizophrenia on neuroleptic medication and in 9 healthy volunteers. The levels of CSF ACE were significantly higher in the schizophrenia group. There were no correlations between CSF ACE and gender, age, age at first episode, duration of illness, term of hospitalization or neuroleptic dosage. No correlations between CSF ACE and serum ACE were found in either group. The authors suggest an activated central renin-angiotensin system in schizophrenia at least during antipsychotic drug treatment, which may cause 'psychogenic' polydipsia in some patients. ACE and the brain renin-angiotensin system may also play a role in the regulation of neuron growth and differentiation in schizophrenia.
K Wahlbeck, and
R Rimón, and
F Fyhrquist
May 1984,
Biological psychiatry,
K Wahlbeck, and
R Rimón, and
F Fyhrquist
June 1987,
Journal of hypertension,
K Wahlbeck, and
R Rimón, and
F Fyhrquist
April 1986,
Experientia,
K Wahlbeck, and
R Rimón, and
F Fyhrquist
January 1979,
Advances in experimental medicine and biology,
K Wahlbeck, and
R Rimón, and
F Fyhrquist
March 1980,
Experimental eye research,
K Wahlbeck, and
R Rimón, and
F Fyhrquist
December 1981,
Biochimica et biophysica acta,
K Wahlbeck, and
R Rimón, and
F Fyhrquist
January 1992,
Comptes rendus des seances de la Societe de biologie et de ses filiales,
K Wahlbeck, and
R Rimón, and
F Fyhrquist
January 1989,
Advances in experimental medicine and biology,
K Wahlbeck, and
R Rimón, and
F Fyhrquist
January 1976,
Tissue & cell,
K Wahlbeck, and
R Rimón, and
F Fyhrquist
January 1976,
Advances in experimental medicine and biology,
