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• W1545101837 endingPage "1652" @default.
• W1545101837 startingPage "1639" @default.
• W1545101837 abstract "BACKGROUND AND PURPOSE The substituted benzamide, metoclopramide, is a dopamine receptor antagonist and is widely prescribed in the symptomatic treatment of nausea and vomiting, although it can cause adverse motor and non-motor side effects. The effects of metoclopramide on brain metabolism have not been investigated to date. EXPERIMENTAL APPROACH To determine the effects of metoclopramide on brain function, cerebral perfusion changes after a single oral dose were assessed in healthy volunteers using magnetic resonance imaging (MRI) techniques. Arterial spin labelling (ASL) perfusion MRI was used to measure cerebral blood flow before and after metoclopramide. Blood haemodynamics in the vertebral and internal carotid arteries were evaluated using phase-contrast MRI. KEY RESULTS Metoclopramide altered haemodynamics in the carotid arteries and the cerebral perfusion. Perfusion increased bilaterally in the putamen, consistent with antagonism of dopamine D(2) receptors by metoclopramide and possibly related to its motor side effects. In contrast, reduced perfusion was observed in the insular cortices and anterior temporal lobes. In addition, functional connectivity between the insular cortex and the dorsolateral prefrontal cortex was decreased. These cortical changes affecting neural circuits between high-order association areas may underlie certain neuropsychiatric conditions occasionally reported after metoclopramide administration. CONCLUSIONS AND IMPLICATIONS The present results show the sensitivity of ASL to detect small changes in regional blood flow, closely related to brain function, after a single pharmacological challenge, highlighting the potential of this technique for human pharmacological studies." @default.
• W1545101837 created "2016-06-24" @default.
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• W1545101837 date "2011-07-25" @default.
• W1545101837 modified "2023-09-25" @default.
• W1545101837 title "Effects on resting cerebral blood flow and functional connectivity induced by metoclopramide: a perfusion MRI study in healthy volunteers" @default.
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• W1545101837 doi "https://doi.org/10.1111/j.1476-5381.2010.01161.x" @default.
• W1545101837 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3166692" @default.
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• W1545101837 hasPublicationYear "2011" @default.
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