Migraine monoclonal antibodies against CGRP change brain activity depending on ligand or receptor target - an fMRI study
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Migraine monoclonal antibodies against CGRP change brain activity depending on ligand or receptor target - an fMRI study. / Basedau, Hauke; Sturm, Lisa-Marie; Mehnert, Jan; Peng, Kuan-Po; Schellong, Marlene; May, Arne.
In: ELIFE, Vol. 11, e77146, 23.05.2022.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Migraine monoclonal antibodies against CGRP change brain activity depending on ligand or receptor target - an fMRI study
AU - Basedau, Hauke
AU - Sturm, Lisa-Marie
AU - Mehnert, Jan
AU - Peng, Kuan-Po
AU - Schellong, Marlene
AU - May, Arne
N1 - © 2022, Basedau et al.
PY - 2022/5/23
Y1 - 2022/5/23
N2 - Background: Monoclonal antibodies (mAbs) against calcitonin gene-related peptides (CGRP) are novel treatments for migraine prevention. Based on a previous functional imaging study which investigated the CGRP receptor mAb (erenumab), we hypothesized that (i) the CGRP ligand mAb galcanezumab would alter central trigeminal pain processing; (ii) responders to galcanezumab treatment would show specific hypothalamic modulation in contrast to non-responders; and (iii) the ligand and the receptor antibody differ in brain responses.Methods: Using an established trigeminal nociceptive functional magnetic imaging paradigm, 26 migraine patients were subsequently scanned twice: before and 2-3 weeks after administration of galcanezumab.Results: We found that galcanezumab decreases hypothalamic activation in all patients and that the reduction was stronger in responders than in non-responders. Contrasting erenumab and galcanezumab showed that both antibodies activate a distinct network. We also found that pre-treatment activity of the spinal trigeminal nucleus (STN) and coupling between the STN and the hypothalamus covariates with the response to galcanezumab.Conclusions: These data suggest that despite relative impermeability of the blood-brain barrier for CGRP mAb, mAb treatment induces certain and highly specific brain effects which may be part of the mechanism of their efficacy in migraine treatment.Funding: This work was supported by the German Ministry of Education and Research (BMBF) of ERA-Net Neuron under the project code BIOMIGA (01EW2002 to AM) and by the German Research Foundation (SFB936-178316478-A5 to AM). The funding sources did not influence study conduction in any way.Clinical trial number: The basic science study was preregistered in the Open Science Framework (https://osf.io/m2rc6).
AB - Background: Monoclonal antibodies (mAbs) against calcitonin gene-related peptides (CGRP) are novel treatments for migraine prevention. Based on a previous functional imaging study which investigated the CGRP receptor mAb (erenumab), we hypothesized that (i) the CGRP ligand mAb galcanezumab would alter central trigeminal pain processing; (ii) responders to galcanezumab treatment would show specific hypothalamic modulation in contrast to non-responders; and (iii) the ligand and the receptor antibody differ in brain responses.Methods: Using an established trigeminal nociceptive functional magnetic imaging paradigm, 26 migraine patients were subsequently scanned twice: before and 2-3 weeks after administration of galcanezumab.Results: We found that galcanezumab decreases hypothalamic activation in all patients and that the reduction was stronger in responders than in non-responders. Contrasting erenumab and galcanezumab showed that both antibodies activate a distinct network. We also found that pre-treatment activity of the spinal trigeminal nucleus (STN) and coupling between the STN and the hypothalamus covariates with the response to galcanezumab.Conclusions: These data suggest that despite relative impermeability of the blood-brain barrier for CGRP mAb, mAb treatment induces certain and highly specific brain effects which may be part of the mechanism of their efficacy in migraine treatment.Funding: This work was supported by the German Ministry of Education and Research (BMBF) of ERA-Net Neuron under the project code BIOMIGA (01EW2002 to AM) and by the German Research Foundation (SFB936-178316478-A5 to AM). The funding sources did not influence study conduction in any way.Clinical trial number: The basic science study was preregistered in the Open Science Framework (https://osf.io/m2rc6).
U2 - 10.7554/eLife.77146
DO - 10.7554/eLife.77146
M3 - SCORING: Journal article
C2 - 35604755
VL - 11
JO - ELIFE
JF - ELIFE
SN - 2050-084X
M1 - e77146
ER -