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Animal studies with neurotensin (NT) directly injected into brain suggest that it has pharmacological properties similar to those of antipsychotic drugs. Here, we present radioligand binding data for some novel hexapeptide analogs of NT(8-13) at the molecularly cloned rat and human neurotensin receptors (NTR-1), along with behavioral and physiological effects of several of these peptides after intraperitoneal...
Peptide nucleic acids (PNAs) are DNA analogs that can hybridize to complementary sequences with high affinity and stability. Here, we report the first evidence of intracellular delivery of PNAs in vivo. Two CNS receptors, an opioid (mu) and a neurotensin (NTR-1), were targeted independently by repeated microinjection of PNAs into the periaqueductal gray. Behavioral responses to neurotensin (antinociception...
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