Abstract
Background: It has been proposed that elevated central thyrotropin- releasing hormone (TRH) is associated with the blunted thyroid-stimulating hormone (TSH) response to TRH in patients with depression. Few studies have directly evaluated this relationship between central nervous system and peripheral endocrine systems in the same patient population. Methods: 15 depressed patients (4 male, 11 female, 12 bipolar, and 3 unipolar) during a double-blind, medication-free period of at least 2 weeks duration, underwent a baseline lumbar puncture followed by a TRH stimulation test. Cerebrospinal fluid (CSF) TRH and serial serum TSH, free thyroxine, triiodothyronine, prolactin, and cortisol were measured. A blunted response to TRH was defined as a delta TSH less than 7 μU/mL. Results: There was no significant difference in mean CSF TRH between 'blunters' (2.82 ± 1.36 pg/mL) and 'nonblunters' (3.97 ± 0.62 pg/mL, p = .40). There was no evidence of an inverse relationship between CSF TRH and baseline or delta TSH. There was no correlation between CSF TRH and the severity of depression or any other endocrine measure. Conclusions: These data are not consistent with the prediction of hypothalamic TRH hypersecretion and subsequent pituitary down- regulation in depression; however, CSF TRH may be from a nonparaventricular nucleus-hypothalamic source (i.e., limbic area, suprachiasmatic nucleus, brain stem-dorsal raphe) and thus, not necessarily related to peripheral neuroendocrine indices.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1049-1052 |
| Number of pages | 4 |
| Journal | Biological Psychiatry |
| Volume | 45 |
| Issue number | 8 |
| DOIs | |
| State | Published - Apr 15 1999 |
| Externally published | Yes |
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Keywords
- Cerebrospinal fluid
- Depression
- Thyroid-stimulating hormone
- Thyrotropin-releasing hormone
ASJC Scopus subject areas
- Biological Psychiatry
Cite this
Lack of correlation between cerebrospinal fluid thyrotropin-releasing hormone (TRH) and TRH-stimulated thyroid-stimulating hormone in patients with depression. / Frye, Mark A; Dunn, Robert T.; Gary, Keith A.; Kimbrell, Timothy A.; Callahan, Ann M.; Luckenbaugh, David A.; Corá-Locatelli, Gabriela; Vanderham, Elizabeth; Winokur, Andrew; Post, Robert M.
In: Biological Psychiatry, Vol. 45, No. 8, 15.04.1999, p. 1049-1052.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Lack of correlation between cerebrospinal fluid thyrotropin-releasing hormone (TRH) and TRH-stimulated thyroid-stimulating hormone in patients with depression
AU - Frye, Mark A
AU - Dunn, Robert T.
AU - Gary, Keith A.
AU - Kimbrell, Timothy A.
AU - Callahan, Ann M.
AU - Luckenbaugh, David A.
AU - Corá-Locatelli, Gabriela
AU - Vanderham, Elizabeth
AU - Winokur, Andrew
AU - Post, Robert M.
PY - 1999/4/15
Y1 - 1999/4/15
N2 - Background: It has been proposed that elevated central thyrotropin- releasing hormone (TRH) is associated with the blunted thyroid-stimulating hormone (TSH) response to TRH in patients with depression. Few studies have directly evaluated this relationship between central nervous system and peripheral endocrine systems in the same patient population. Methods: 15 depressed patients (4 male, 11 female, 12 bipolar, and 3 unipolar) during a double-blind, medication-free period of at least 2 weeks duration, underwent a baseline lumbar puncture followed by a TRH stimulation test. Cerebrospinal fluid (CSF) TRH and serial serum TSH, free thyroxine, triiodothyronine, prolactin, and cortisol were measured. A blunted response to TRH was defined as a delta TSH less than 7 μU/mL. Results: There was no significant difference in mean CSF TRH between 'blunters' (2.82 ± 1.36 pg/mL) and 'nonblunters' (3.97 ± 0.62 pg/mL, p = .40). There was no evidence of an inverse relationship between CSF TRH and baseline or delta TSH. There was no correlation between CSF TRH and the severity of depression or any other endocrine measure. Conclusions: These data are not consistent with the prediction of hypothalamic TRH hypersecretion and subsequent pituitary down- regulation in depression; however, CSF TRH may be from a nonparaventricular nucleus-hypothalamic source (i.e., limbic area, suprachiasmatic nucleus, brain stem-dorsal raphe) and thus, not necessarily related to peripheral neuroendocrine indices.
AB - Background: It has been proposed that elevated central thyrotropin- releasing hormone (TRH) is associated with the blunted thyroid-stimulating hormone (TSH) response to TRH in patients with depression. Few studies have directly evaluated this relationship between central nervous system and peripheral endocrine systems in the same patient population. Methods: 15 depressed patients (4 male, 11 female, 12 bipolar, and 3 unipolar) during a double-blind, medication-free period of at least 2 weeks duration, underwent a baseline lumbar puncture followed by a TRH stimulation test. Cerebrospinal fluid (CSF) TRH and serial serum TSH, free thyroxine, triiodothyronine, prolactin, and cortisol were measured. A blunted response to TRH was defined as a delta TSH less than 7 μU/mL. Results: There was no significant difference in mean CSF TRH between 'blunters' (2.82 ± 1.36 pg/mL) and 'nonblunters' (3.97 ± 0.62 pg/mL, p = .40). There was no evidence of an inverse relationship between CSF TRH and baseline or delta TSH. There was no correlation between CSF TRH and the severity of depression or any other endocrine measure. Conclusions: These data are not consistent with the prediction of hypothalamic TRH hypersecretion and subsequent pituitary down- regulation in depression; however, CSF TRH may be from a nonparaventricular nucleus-hypothalamic source (i.e., limbic area, suprachiasmatic nucleus, brain stem-dorsal raphe) and thus, not necessarily related to peripheral neuroendocrine indices.
KW - Cerebrospinal fluid
KW - Depression
KW - Thyroid-stimulating hormone
KW - Thyrotropin-releasing hormone
UR - http://www.scopus.com/inward/record.url?scp=0033560685&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033560685&partnerID=8YFLogxK
U2 - 10.1016/S0006-3223(98)00322-9
DO - 10.1016/S0006-3223(98)00322-9
M3 - Article
VL - 45
SP - 1049
EP - 1052
JO - Biological Psychiatry
JF - Biological Psychiatry
SN - 0006-3223
IS - 8
ER -