Oral contraceptives and the serotonin 4 receptor: a molecular brain imaging study in healthy women
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Oral contraceptives and the serotonin 4 receptor : a molecular brain imaging study in healthy women. / Larsen, S. V.; Köhler-Forsberg, K.; Dam, V. H.; Poulsen, A. S.; Svarer, C.; Jensen, P. S.; Knudsen, G. M.; Fisher, P. M.; Ozenne, B.; Frokjær, V. G.
In: Acta Psychiatrica Scandinavica, Vol. 142, No. 4, 2020, p. 294-306.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Oral contraceptives and the serotonin 4 receptor
T2 - a molecular brain imaging study in healthy women
AU - Larsen, S. V.
AU - Köhler-Forsberg, K.
AU - Dam, V. H.
AU - Poulsen, A. S.
AU - Svarer, C.
AU - Jensen, P. S.
AU - Knudsen, G. M.
AU - Fisher, P. M.
AU - Ozenne, B.
AU - Frokjær, V. G.
PY - 2020
Y1 - 2020
N2 - Objective: Sex steroid hormones potently shape brain functions, including those critical to maintain mental health such as serotonin signaling. Use of oral contraceptives (OCs) profoundly changes endogenous sex steroid hormone levels and dynamics. Recent register-based studies show that starting an OC is associated with increased risk of developing depression. Here, we investigate whether use of OCs in healthy women is associated with a marker of the serotonin system in terms of serotonin 4 receptor (5-HT4R) brain imaging. Methods: [11C]SB207145-PET imaging data on 53 healthy women, of whom 16 used OCs, were available from the Cimbi database. We evaluated global effects of OC use on 5-HT4R binding in a latent variable model based on 5-HT4R binding across cortical and subcortical regions. Results: We demonstrate that OC users have 9–12% lower global brain 5-HT4R binding potential compared to non-users. Univariate region-based analyses (pallidostriatum, caudate, hippocampus, amygdala, anterior cingulate cortex, and neocortex) supported the global effect of OC use with the largest difference present in the hippocampus (−12.8% (95% CI [−21.0; −3.9], Pcorrected = 0.03). Conclusion: We show that women who use OCs have markedly lower brain 5-HT4R binding relative to non-users, which constitutes a plausible molecular link between OC use and increased risk of depressive episodes. We propose that this reflects a reduced 5-HT4R gene expression, possibly related to a blunted ovarian hormone state among OC users.
AB - Objective: Sex steroid hormones potently shape brain functions, including those critical to maintain mental health such as serotonin signaling. Use of oral contraceptives (OCs) profoundly changes endogenous sex steroid hormone levels and dynamics. Recent register-based studies show that starting an OC is associated with increased risk of developing depression. Here, we investigate whether use of OCs in healthy women is associated with a marker of the serotonin system in terms of serotonin 4 receptor (5-HT4R) brain imaging. Methods: [11C]SB207145-PET imaging data on 53 healthy women, of whom 16 used OCs, were available from the Cimbi database. We evaluated global effects of OC use on 5-HT4R binding in a latent variable model based on 5-HT4R binding across cortical and subcortical regions. Results: We demonstrate that OC users have 9–12% lower global brain 5-HT4R binding potential compared to non-users. Univariate region-based analyses (pallidostriatum, caudate, hippocampus, amygdala, anterior cingulate cortex, and neocortex) supported the global effect of OC use with the largest difference present in the hippocampus (−12.8% (95% CI [−21.0; −3.9], Pcorrected = 0.03). Conclusion: We show that women who use OCs have markedly lower brain 5-HT4R binding relative to non-users, which constitutes a plausible molecular link between OC use and increased risk of depressive episodes. We propose that this reflects a reduced 5-HT4R gene expression, possibly related to a blunted ovarian hormone state among OC users.
KW - (11C)SB207145
KW - major depressive disorder
KW - oral contraceptives
KW - serotonin 4 receptor
KW - sex steroid hormones
U2 - 10.1111/acps.13211
DO - 10.1111/acps.13211
M3 - Journal article
C2 - 33314049
AN - SCOPUS:85088251905
VL - 142
SP - 294
EP - 306
JO - Acta Psychiatrica Scandinavica
JF - Acta Psychiatrica Scandinavica
SN - 0001-690X
IS - 4
ER -
ID: 245659053