Schizophrenia is a complicated mental health disorder accompanied by wide range of symptoms such as hallucinations, impaired cognitive ability, and disorganized speech or behavior.
Japan Advanced Institute of Science and Technology Jun 27 2024 It has been associated with anomalies in neurotransmission due to the imbalance of chemical neurotransmitters. Current treatment strategies against schizophrenia involve the administration of antipsychotic drugs, which can cause adverse effects and are associated with a high risk of cardiovascular disease .
The researchers were inspired by previous findings which showed the interactions of vasoactive intestinal peptide receptor 2 gene duplication in schizophrenia and their own discovery of a novel peptide, KS-133. The novel peptide, KS-133, has selective antagonist activity to VIPR2, leading to its downregulation. However, the major limitation associated with KS-133 was its poor permeability across BBB.
The administration of peptide formulations via the DDS resulted in the effective distribution of the drug in the brains of mice. Drug release profiles assessed by pharmacokinetic analysis confirmed the role of the brain-targeting peptide in transporting KS-133 into the brain. Furthermore, the efficacy of DDS was evaluated in mice with induced schizophrenia by elevated activation of VIPR2.
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