Regulatory Effect of Lithium on Thyroxine Metabolism in Murine Neural and Anterior Pituitary Tissue

Regulatory Effect of Lithium on Thyroxine Metabolism in Murine Neural and Anterior Pituitary Tissue
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锂对小鼠神经和垂体前叶组织甲状腺素代谢的调节作用

DOI:
10.1210/endo-120-4-1430
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发表时间:
1987
期刊:
影响因子:
4.8
通讯作者:
D. L. Germain
D. L. Germain
中科院分区:
医学2区
文献类型:
--
作者:
D. L. Germain

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大脑和垂体前叶中 T4 向 T3 的转化对这些组织的 T3 含量有显着贡献,并且似乎是甲状腺激素作用的重要调节剂。在本研究中,抗躁狂剂锂在培养的神经和垂体组织中被证明对低 Km(II 型)碘甲状腺原氨酸 5'-脱碘酶(I5'D)(介导 T3 形成的酶)的活性具有显着的抑制作用。在中等锂浓度为 3.3–5 mM 时,NB41A3 小鼠神经母细胞瘤细胞系中的 I5'D 活性降低了 44 ± 3% (P < 0.001),GH3 大鼠垂体肿瘤细胞系中 I5′D 活性降低了 48 ± 2% (P < 0.001)。这种抑制作用仅在完整细胞中观察到。提前 3-24 小时注射 4 或 10 mmol/kg BW LiCl 的甲状腺切除大鼠的垂体前叶也观察到这种酶促过程的显着抑制。低 Km I5'D 活性的降低伴随着血清 T3 浓度和垂体的显着降低......
The conversion of T4 to T3 in the brain and anterior pituitary gland contributes significantly to the T3 content of these tissues and appears to be an important modulator of thyroid hormone action. In the present study, the antimanic agent lithium was demonstrated in cultured neural and pituitary tissue to have a significant inhibitory effect on the activity of low Km (type II) iodothyronine 5′-deiodinase (I5′D), the enzyme mediating T3 formation. At medium lithium concentrations of 3.3–5 mM, I5′D activity was decreased 44 ± 3% (P < 0.001) in the NB41A3 mouse neuroblastoma cell line and 48 ± 2% (P < 0.001) in the GH3 rat pituitary tumor cell line. This inhibitory effect was only observed in intact cells. Significant inhibition of this enzymatic process was also noted in the anterior pituitary gland of thyroidectomized rats injected 3–24 h earlier with either 4 or 10 mmol/kg BW LiCl. This decrease in low Km I5′D activity was accompanied by significant decreases in the serum T3 concentration and the pituita...
甲状腺功能正常和甲状腺功能减退大鼠甲状腺外三碘甲状腺原氨酸生成途径的定性和定量差异。
DOI: 10.1172/jci111313
发表时间: 1984
期刊: The Journal of clinical investigation
影响因子: --
作者:
Silva,JE;Gordon,MB;Crantz,FR;Leonard,JL;Larsen,PR
通讯作者: Larsen,PR
DOI: 10.1210/endo-110-2-367
发表时间: 1982-01-01
期刊: ENDOCRINOLOGY
影响因子: 4.8
作者:
CRANTZ, FR;SILVA, JE;LARSEN, PR
通讯作者: LARSEN, PR
DOI: 10.1172/jci112049
发表时间: 1985-08
期刊: The Journal of clinical investigation
影响因子: --
作者:
D L St Germain
通讯作者: D L St Germain
甲状腺素、三碘甲状腺原氨酸和反三碘甲状腺原氨酸对大鼠脑皮质和腺垂体 II 型 5-脱碘酶的调节。
DOI: 10.1210/endo-116-4-1627
发表时间: 1985
期刊: Endocrinology
影响因子: 4.8
作者:
Silva,JE;Leonard,JL
通讯作者: Leonard,JL
DOI: 10.1210/endo-112-3-1153
发表时间: 1983-03
期刊: Endocrinology
影响因子: 4.8
作者:
Jack L. Leonard;Sarah A. Mellen;Reed P. Larsen
通讯作者: Jack L. Leonard;Sarah A. Mellen;Reed P. Larsen