Estradiol phase shifts circannual body mass rhythms of male ground squirrels.

Estradiol phase shifts circannual body mass rhythms of male ground squirrels.
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雌二醇会改变雄性地松鼠的年度体重节律。

DOI:
10.1152/ajpregu.1998.274.3.r754
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发表时间:
1998
期刊:
The American journal of physiology
影响因子:
--
通讯作者:
Zucker,I
Zucker,I
中科院分区:
--
文献类型:
--
作者:
Hiebert,SM;Lee,TM;Licht,P;Zucker,I

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将去性腺的雄性金毛黄鼠(Spermophilus Lateralis)植入苯甲酸雌二醇(EB)胶囊或空胶囊。在激素治疗前、治疗中和治疗后至少一年内监测体重。在年周期的质量增长阶段,EB处理显著减慢了体质量的增加;EB处理的松鼠的体质量年节律(CAR)周期比空白处理的松鼠长54天。减重阶段的激素治疗加速了减重;虽然这种影响只接近统计学意义,但在随后的周期中,CAR的一些阶段标志明显提前。我们的结论是,就像女性一样,雌二醇在周年周期的不同阶段对男性的汽车波形产生不同的影响。性别分化不会消除松鼠汽车对雌二醇的反应;性别差异,如果有的话,是微妙的,而不是绝对的,在这方面,不同于昼夜节律。
Gonadectomized male golden-mantled ground squirrels (Spermophilus lateralis) were implanted with estradiol benzoate (EB)-filled or empty capsules. Body mass was monitored before, during, and for at least 1 yr after hormone treatment. EB treatment during the mass-gain phase of the annual cycle significantly decelerated increases in body mass; the period of the circannual rhythm (CAR) of body mass was 54 days longer in EB- than blank-treated squirrels. Hormone treatment during the mass-loss phase accelerated mass loss; although this effect only approached statistical significance, some phase markers of the CAR were significantly advanced in subsequent cycles. We conclude that, as in females, estradiol affects the waveform of the CAR of males differently at different phases of the circannual cycle. Sexual differentiation does not eliminate responsiveness of CARs of squirrels to estradiol; sex differences, if any, are subtle rather than absolute and, in this respect, differ from circadian rhythms.
地松鼠的新生儿雄激素化:对体重和黄体生成激素水平性别差异的影响。
DOI: 10.1095/biolreprod34.3.507
发表时间: 1986
影响因子: 3.6
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Smale,L;Pelz,K;Zucker,I;Light,P
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发表时间: 1980-01-01
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DOI: 10.1152/ajpregu.1983.244.4.r472
发表时间: 1983
期刊: The American journal of physiology
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期刊: The American journal of physiology
影响因子: --
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DOI: --
发表时间: 1984
期刊:
影响因子: --
作者:
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通讯作者: G. R. Michener