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- Title
Cell type specificity of neurovascular coupling in cerebral cortex.
- Authors
Uhlirova, Hana; Kılıç, Kıvılcım; Peifang Tian; Thunemann, Martin; Desjardins, Michèle; Saisan, Payam A.; Sakadžić, Sava; Ness, Torbjørn V.; Mateo, Celine; Qun Cheng; Weldy, Kimberly L.; Razoux, Florence; Vandenberghe, Matthieu; Cremonesi, Jonathan A.; Ferri, Christopher G. L.; Nizar, Krystal; Sridhar, Vishnu B.; Steed, Tyler C.; Abashin, Maxim; Fainman, Yeshaiahu
- Abstract
Identification of the cellular players and molecular messengers that communicate neuronal activity to the vasculature driving cerebral hemodynamics is important for (1) the basic understanding of cerebrovascular regulation and (2) interpretation of functional Magnetic Resonance Imaging (fMRI) signals. Using a combination of optogenetic stimulation and 2-photon imaging in mice, we demonstrate that selective activation of cortical excitation and inhibition elicits distinct vascular responses and identify the vasoconstrictive mechanism as Neuropeptide Y (NPY) acting on Y1 receptors. The latter implies that task-related negative Blood Oxygenation Level Dependent (BOLD) fMRI signals in the cerebral cortex under normal physiological conditions may be mainly driven by the NPY-positive inhibitory neurons. Further, the NPY-Y1 pathway may offer a potential therapeutic target in cerebrovascular disease.
- Subjects
CEREBROVASCULAR disease; NEUROVASCULAR diseases; BRAIN physiology; CEREBRAL cortex; NEURAL physiology; CELL communication; MAGNETIC resonance imaging; THERAPEUTICS
- Publication
eLife, 2016, p1
- ISSN
2050-084X
- Publication type
Article
- DOI
10.7554/eLife.14315