Age-related increase in presynaptic noradrenergic markers of the rat cerebral cortex.

Age-related increase in presynaptic noradrenergic markers of the rat cerebral cortex.
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大鼠大脑皮层突触前去甲肾上腺素能标记物与年龄相关的增加。

DOI:
10.1016/0006-8993(86)90699-2
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发表时间:
1986
期刊:
影响因子:
2.9
通讯作者:
McCracken,KA
McCracken,KA
中科院分区:
医学3区
文献类型:
--
作者:
Harik,SI;McCracken,KA

文献摘要

参考文献

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在年轻(3-4个月)和老年(28-29个月)Fischer-344大鼠中研究了大脑皮质去甲肾上腺素能神经支配的脑内相关变化。去甲肾上腺素的浓度和酪氨酸羟化酶的活性(可能是儿茶酚胺生物合成的限速步骤)在老年大脑皮层中显著较高,但未观察到l-3,4-二羟基苯丙氨酸脱羧酶活性的差异。老年大鼠大脑皮质匀浆对去甲肾上腺素的特异性高亲和力摄取表现出较高的最大摄取,但亲和力较低。这些结果表明老年Fischer-344大鼠大脑皮层突触前去甲肾上腺素能活动增加。
Age-related alterations in the noradrenergic innervation of the cerebral cortex were investigated in young (3–4 months) and aged (28–29 months) Fischer-344 rats. The concentration of noradrenaline and the activity of tyrosine hydroxylase, the probable rate-limiting step in catecholamine biosynthesis, were significantly higher in the aged cerebral cortex, but no differences inl-3,4-dihydroxyphenylalanine decar☐ylase activity were observed. The specific high-affinity uptake of noradrenaline by homogenates of the aged cerebral cortex exhibited higher maximal uptake, but lower affinity, than those of young rats. These results suggest increased presynaptic noradrenergic activity in the cerebral cortex of aged Fischer-344 rats.
DOI: --
发表时间: 1965
期刊: The Lancet
影响因子: --
作者:
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通讯作者: P. Powley
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DOI: --
发表时间: 1982
影响因子: 6.7
作者:
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DOI: 10.1093/oxfordjournals.aje.a113386
发表时间: 1982
影响因子: 5
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通讯作者: Ross,RK
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发表时间: 1971
影响因子: 2.4
作者:
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