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Vasopressin and related peptides: animal and human studies.

In animals, vasopressin and related peptides are present in specific neuronal pathways in the brain and modulate brain processes. It has been suggested that in particular memory processes, including consolidation and retrieval, short and long term memories are facilitated by vasopressin. Evidence has been presented that endogenous vasopressin is involved in these processes. But also other effects of these peptides e.g. an attenuation of acquisition of heroin self-administration have been reported. Vasopressin and related peptides have been administered to humans in a number of studies including volunteers and various patient populations with and without complaints about memory. Beneficial effects on several aspects of memory, learning, attention and concentration have been found, but not in all studies. Patients with severe deficits seem to benefit less from the peptide treatment. This may be related to the amount of brain damage. Beneficial effects of vasopressin treatment have been reported in schizophrenics and heroin addicts. In addition effects on social behavior, energy and mood of certain patients have been noted. The target patient population for vasopressin neuropeptide is thus not yet well defined. With respect to cognitive disorders, sophisticated neuropsychological test procedures, including information-processing tasks, may contribute to define such a patient population. These tasks may also be applied for treatment evaluation. It should however be kept in mind that other interesting influences of vasopressin e.g. on social behavior, mood and addictive behavior, may also appear of clinical significance. Future studies in humans may yield more detailed information in this respect.(ABSTRACT TRUNCATED AT 250 WORDS)[1]

References

  1. Vasopressin and related peptides: animal and human studies. Van Ree, J.M., Hijman, R., Jolles, J., De Wied, D. Prog. Neuropsychopharmacol. Biol. Psychiatry (1985) [Pubmed]
 
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