TY - JOUR
T1 - Central serotonin transporter levels are associated with stress hormone response and anxiety
AU - Reimold, Matthias
AU - Knobel, Astrid
AU - Rapp, Michael A.
AU - Batra, Anil
AU - Wiedemann, Klaus
AU - Ströhle, Andreas
AU - Zimmer, Anke
AU - Schönknecht, Peter
AU - Smolka, Michael N.
AU - Weinberger, Daniel R.
AU - Goldman, David
AU - Machulla, Hans Jürgen
AU - Bares, Roland
AU - Heinz, Andreas
N1 - Funding Information:
Acknowledgments The study was supported by grants from the Deutsche Forschungsgemeinschaft (He 2597/7-3, Sm 80/2-2, and Re 1472/6-2) and supported in part by the German Ministry for Education and Research (01GS08159), and the National Genome Research Network (NGFN 01GS08148). We would like to thank Professors Florian Holsboer and Jeff Meyer for their helpful comments on an earlier version of this manuscript.
PY - 2011/2
Y1 - 2011/2
N2 - Rationale: Negative mood states are characterized by both stress hormone dysregulation and serotonergic dysfunction, reflected by altered thalamic serotonin transporter (5-HTT) levels. However, so far, no study examined the individual association between cortisol response and cerebral in vivo 5-HTT levels in patients suffering from negative mood states. Objective: The objective of this cross-sectional study was to assess the interrelation of cortisol response, thalamic 5-HTT levels, and anxiety in healthy subjects and two previously published samples of patients with unipolar major depression (UMD) and obsessive-compulsive disorder (OCD), controlling for age, gender, 5-HTT genotype, smoking, and seasonality. Methods: Regional 5-HTT levels and cortisol response to dexamethasone-corticotropin (Dex-CRH) challenge were assessed in consecutive samples of medication-free patients suffering from UMD (N = 10) and OCD (N = 10), and 20 healthy volunteers. The intervention used was combined Dex-CRH test and [11C]DASB positron emission tomography. The main outcome measures were: 5-HTT binding potential (BPND) in a predefined thalamic ROI, cortisol response defined as the maximum cortisol increase in the combined Dex-CRH-test, and state of anxiety from the state-trait-anxiety inventory. Results: Reduced thalamic 5-HTT BPND was associated with increased cortisol response (r = -0.35, p < 0.05; in patients: r = -0.53, p < 0.01) and with increased state anxiety (r = -0.46, p < 0.01), surviving correction for age, gender, 5-HTT genotype, smoking, and seasonality (p < 0.05). The 5-HTT genotype, on the contrary, was not significantly associated with cortisol response (p = 0.19) or negative mood (p = 0.23). Conclusion: The association between stress hormone response, thalamic 5-HTT levels, and anxiety in patients suffering from negative mood states suggests an interaction between two major mechanisms implicated in negative mood states in humans.
AB - Rationale: Negative mood states are characterized by both stress hormone dysregulation and serotonergic dysfunction, reflected by altered thalamic serotonin transporter (5-HTT) levels. However, so far, no study examined the individual association between cortisol response and cerebral in vivo 5-HTT levels in patients suffering from negative mood states. Objective: The objective of this cross-sectional study was to assess the interrelation of cortisol response, thalamic 5-HTT levels, and anxiety in healthy subjects and two previously published samples of patients with unipolar major depression (UMD) and obsessive-compulsive disorder (OCD), controlling for age, gender, 5-HTT genotype, smoking, and seasonality. Methods: Regional 5-HTT levels and cortisol response to dexamethasone-corticotropin (Dex-CRH) challenge were assessed in consecutive samples of medication-free patients suffering from UMD (N = 10) and OCD (N = 10), and 20 healthy volunteers. The intervention used was combined Dex-CRH test and [11C]DASB positron emission tomography. The main outcome measures were: 5-HTT binding potential (BPND) in a predefined thalamic ROI, cortisol response defined as the maximum cortisol increase in the combined Dex-CRH-test, and state of anxiety from the state-trait-anxiety inventory. Results: Reduced thalamic 5-HTT BPND was associated with increased cortisol response (r = -0.35, p < 0.05; in patients: r = -0.53, p < 0.01) and with increased state anxiety (r = -0.46, p < 0.01), surviving correction for age, gender, 5-HTT genotype, smoking, and seasonality (p < 0.05). The 5-HTT genotype, on the contrary, was not significantly associated with cortisol response (p = 0.19) or negative mood (p = 0.23). Conclusion: The association between stress hormone response, thalamic 5-HTT levels, and anxiety in patients suffering from negative mood states suggests an interaction between two major mechanisms implicated in negative mood states in humans.
KW - Dex-CRH-Test
KW - Negative mood states
KW - PET
KW - Serotonin transporter
KW - Stress hormones
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U2 - 10.1007/s00213-010-1903-y
DO - 10.1007/s00213-010-1903-y
M3 - Article
C2 - 20585760
AN - SCOPUS:79952487191
SN - 0033-3158
VL - 213
SP - 563
EP - 572
JO - Psychopharmacology
JF - Psychopharmacology
IS - 2-3
ER -