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| Item Type: | Article |
|---|---|
| Title: | Effects of bradykinin B2 receptor ablation from tyrosine hydroxylase cells on behavioral and motor aspects in male and female mice |
| Creators Name: | Franco, T.M. and Tavares, M.R. and Novaes, L.S. and Munhoz, C.D. and Peixoto-Santos, J.E. and Araujo, R.C. and Donato, J. and Bader, M. and Wasinski, F. |
| Abstract: | The kallikrein–kinin system is a versatile regulatory network implicated in various biological processes encompassing inflammation, nociception, blood pressure control, and central nervous system functions. Its physiological impact is mediated through G-protein-coupled transmembrane receptors, specifically the B1 and B2 receptors. Dopamine, a key catecholamine neurotransmitter widely distributed in the CNS, plays a crucial role in diverse physiological functions including motricity, reward, anxiety, fear, feeding, sleep, and arousal. Notably, the potential physical interaction between bradykinin and dopaminergic receptors has been previously documented. In this study, we aimed to explore whether B2R modulation in catecholaminergic neurons influences the dopaminergic pathway, impacting behavioral, metabolic, and motor aspects in both male and female mice. B2R ablation in tyrosine hydroxylase cells reduced the body weight and lean mass without affecting body adiposity, substrate oxidation, locomotor activity, glucose tolerance, or insulin sensitivity in mice. Moreover, a B2R deficiency in TH cells did not alter anxiety levels, exercise performance, or motor coordination in female and male mice. The concentrations of monoamines and their metabolites in the substantia nigra and cortex region were not affected in knockout mice. In essence, B2R deletion in TH cells selectively influenced the body weight and composition, leaving the behavioral and motor aspects largely unaffected. |
| Keywords: | Bradykinin, B2 Receptor (B2R), Tyrosine Hydroxylase (TH) Cells, Metabolic Aspects, Animals, Mice |
| Source: | International Journal of Molecular Sciences |
| ISSN: | 1422-0067 |
| Publisher: | MDPI |
| Volume: | 25 |
| Number: | 3 |
| Page Range: | 1490 |
| Date: | 25 January 2024 |
| Official Publication: | https://doi.org/10.3390/ijms25031490 |
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