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汞对仓鼠下丘脑 - 垂体轴结构和功能的影响。

The effects of mercury on the structure and function of the hypothalamo-pituitary axis in the hamster.

作者信息

Lamperti A, Niewenhuis R

出版信息

Cell Tissue Res. 1976 Jul 30;170(3):315-24. doi: 10.1007/BF00219414.

DOI:10.1007/BF00219414
PMID:986244
Abstract

The neurons of the arcuate nucleus were studied ultrastructurally in female hamsters that were given saline or 1 mg mercuric chloride/day during one estrous cycle. Membranous whorls, composed of 4-26 concentric layers of smooth endoplasmic reticulum, were found in 7-8% of the neurons of control animals in diestrus (D3) and in proestrus (D3) and in proestrus (D4). Whorls were found in 5-16% of the neurons in mercury-treated animals on all days of the experimental period. The whorls appeared to be associated with RER and Golgi bodies. The levels of FSH and LH were measured in the plasma and pituitaries of both groups of animals. There was a significantly higher concentration of FSH in the pituitaries of experimental animals on D3 and of LH on D1C2 of the subsequent cycle; plasma levels of FSH and LH were similar in both groups throughout the experimental period. The relationship between the levels of gonadotropins and the presence of membranous whorls is discussed.

摘要

在一个发情周期内,对每天给予生理盐水或1毫克氯化汞的雌性仓鼠的弓状核神经元进行了超微结构研究。在间情期(D3)和发情前期(D3)以及发情前期(D4)的对照动物的7-8%的神经元中发现了由4-26层同心的光滑内质网组成的膜性涡旋。在实验期的所有天数里,在汞处理动物的5-16%的神经元中发现了涡旋。这些涡旋似乎与粗面内质网和高尔基体有关。测量了两组动物血浆和垂体中促卵泡激素(FSH)和促黄体生成素(LH)的水平。在随后周期的D3,实验动物垂体中FSH的浓度显著更高,在D1C2时LH的浓度显著更高;在整个实验期,两组动物血浆中FSH和LH的水平相似。讨论了促性腺激素水平与膜性涡旋存在之间的关系。

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引用本文的文献

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2
Ovarian effects of a sublethal concentration of mercuric chloride in the river frog, Rana heckscheri (Anura: Ranidae).
Bull Environ Contam Toxicol. 1993 Mar;50(3):385-91. doi: 10.1007/BF00197198.
3
Effect of mercuric chloride on the reproductive cycle of the teleostean fish Channa punctatus.氯化汞对硬骨鱼斑鳢生殖周期的影响。

本文引用的文献

1
Radioimmunoassay for bovine and ovine luteinizing hormone.牛和羊促黄体激素的放射免疫测定法
Endocrinology. 1969 May;84(5):1166-73. doi: 10.1210/endo-84-5-1166.
2
Serum profiles of follicle-stimulating hormone, luteinizing hormone and prolactin during the estrous cycle of the hamster.仓鼠发情周期中促卵泡激素、促黄体生成素和催乳素的血清谱。
Endocrinology. 1974 May;94(5):1295-9. doi: 10.1210/endo-94-5-1295.
3
Changes in neurons of the median eminence-arcuate region of rats induced by morphine treatment: an electronmicroscopic study.
Bull Environ Contam Toxicol. 1983 Jan;30(1):24-7. doi: 10.1007/BF01610093.
4
Mercurial induced changes in the hypothalamo-neurohypophysical complex in relation to reproduction in the teleostean fish, Channa punctatus (Bloch).汞对斑鳢(布洛赫)下丘脑 - 神经垂体复合体的影响及其与繁殖的关系。 (硬骨鱼纲)
Bull Environ Contam Toxicol. 1988 Sep;41(3):329-36. doi: 10.1007/BF01688875.
5
Normal pituitary hormone response to thyrotrophin and gonadotrophin releasing hormones in subjects exposed to elemental mercury vapour.暴露于元素汞蒸气的受试者垂体激素对促甲状腺激素和促性腺激素释放激素的正常反应。
Br J Ind Med. 1990 Sep;47(9):639-44. doi: 10.1136/oem.47.9.639.
吗啡处理诱导大鼠正中隆起-弓状核区域神经元的变化:一项电子显微镜研究
Neurobiology. 1974;4(1):1-11.
4
Effects of mercuric chloride on the reproductive cycle of the female hamster.氯化汞对雌性仓鼠生殖周期的影响。
Biol Reprod. 1973 Apr;8(3):378-87. doi: 10.1093/biolreprod/8.3.378.
5
Peripheral levels of estrogen in the cyclic hamster.周期性仓鼠体内雌激素的外周水平。
Endocrinology. 1973 Mar;92(3):805-12. doi: 10.1210/endo-92-3-805.
6
Validation of an ovine--ovine LH radioimmunoassay for use in the hamster.用于仓鼠的绵羊-绵羊促黄体生成素放射免疫测定法的验证。
Biol Reprod. 1973 Apr;8(3):299-305. doi: 10.1093/biolreprod/8.3.299.
7
Localization, accumulation, and toxic effects of mercuric chloride on the reproductive axis of the female hamster.氯化汞在雌性仓鼠生殖轴上的定位、蓄积及毒性作用。
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8
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Effects of steroid hormones on gonadotrophin secretion in female rats after ovariectomy during the oestrous cycle.甾体激素对发情周期中卵巢切除的雌性大鼠促性腺激素分泌的影响。
J Endocrinol. 1974 Sep;62(3):511-25. doi: 10.1677/joe.0.0620511.
10
The role of the arcuate nucleus in the brain-pituitary-gonad axis.
J Comp Neurol. 1971 Dec;143(4):411-45. doi: 10.1002/cne.901430403.