Neurotensin-like immunoreactivity in cerebrospinal fluid of patients with schizophrenia, depression, anorexia nervosa-bulimia, and premenstrual syndrome
Abstract
Neurotensin (NT) concentrations in cerebrospinal fluid (CSF) were measured by a sensitive and specific radioimmunoassay in psychiatric patients and age- and sex-matched normal controls. No increase in CSF NT concentrations was observed after antipsychotic drug treatment. CSF NT concentrations were significantly lower in one group of schizophrenic subjects. NT concentrations were unaltered in patients with depression, anorexia/bulimia, or premenstrual syndrome, and no rostral-caudal gradient for NT in CSF was evident. NT concentrations were not related to age or sex, and probenecid treatment did not alter CSF NT concentrations. Finally CSF NT concentrations were unaltered in paranoid schizophrenic subjects. These findings confirm and extend previous studies of CSF NT that showed certain patients with schizophrenia, nonparanoid type, have reduced CSF concentrations of this tridecapeptide.
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