ArticleAddiction biology2025
The Role of LVV-H7 in Alcohol-Induced Reward Mechanisms.
Article in Addiction biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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9 authors.
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Abstract
This study aimed to investigate the role of LVV-hemorphin-7 (LVV-H7) in alcohol dependence. LVV-H7 is a short peptide derived from the cleavage of haemoglobin chains that binds to opioid receptors and plays diverse roles in various physiological and pathological processes. Additionally, LVV-H7 is cleaved at higher concentrations in the presence of alcohol. We conducted behavioural experiments in animal models and performed proteomic analyses of CNS tissues from alcohol-addicted rats to identify LVV-H7 binding partners. Using fluorescent microscopy, we confirmed the blood-brain barrier (BBB) permeability of synthesized LVV-H7 and its releasing enzyme inhibitor, pepstatin. Our results revealed a dose-dependent correlation between LVV-H7 quantities and alcohol levels. Mass spectrometry-based analyses identified LVV-H7's protein-binding targets in CNS tissues of addicted rats and the enzymes responsible for their degradation. These findings highlight the significant role of LVV-H7 in the mechanisms underlying alcohol dependence and indicate the potential role of hemorphin as a therapeutic target.
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