Manipulating thyroid status alters endoplasmic reticulum calcium homeostasis in rat cerebellum
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Title |
Manipulating thyroid status alters endoplasmic reticulum calcium homeostasis in rat cerebellum
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| Creator |
Cole, JT
McMullen, DC Kean, WS Yarnell, AM Lucky, JJ Selak, MA Buonora, JE Grunberg, NE Verma, A Watson, WD |
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| Subject |
Behavior
Brain Calcium Endoplasmic reticulum SERCA Thyroid hormone |
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| Description |
7-18
Thyroid-related hormones regulate the efficiency and expression of sarco-endoplasmic reticulum calcium ATPases in cardiac and skeletal muscle. However, little is known about the relationship between thyroid hormones and calcium (Ca<sup>2+</sup>) homeostasis in the brain. It is hypothesized that manipulating rat thyroid hormone levels would induce significant brain Ca<sup>2+</sup> adaptations consistent with clinical findings. Adult male Sprague-Dawley rats were assigned to one of three treatment groups for 28 days: control, hypothyroid (6-n-propyl-2-thiouracil (PTU), an inhibitor of thyroxine (T4) synthesis), and hyperthyroid (T4). Throughout, rats were given weekly behavioral tests. Ca<sup>2+</sup> accumulation decreased in the cerebellum in both hyper- and hypothyroid animals. This was specific to different ER pools of calcium with regional heterogeneity in the response to thyroid hormone manipulation. Behavioral tasks demonstrated sensitivity to thyroid manipulation, and corresponded to alterations in calcium homeostasis. Ca<sup>2+</sup> accumulation heterogeneity in chronic hyper- and hypothyroid animals potentially explains clinical manifestations of altered thyroid status. |
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| Date |
2012-01-02T05:55:14Z
2012-01-02T05:55:14Z 2012-01 |
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| Type |
Article
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| Identifier |
0975-1009 (Online); 0019-5189 (Print)
http://hdl.handle.net/123456789/13304 |
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| Language |
en_US
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Publisher |
NISCAIR-CSIR, India
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| Source |
IJEB Vol.50(01) [January 2012]
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