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The gonads, namely the testes in males and the ovaries in females, are pivotal in producing gonadal hormones that orchestrate the intricate processes of sexual development and reproduction.
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The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
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The response to stress—be it physical or psychological, acute or chronic—involves activation of the Hypothalamic-Pituitary-Adrenal (HPA) axis. The HPA axis is part of the neuroendocrine system because it involves both neuronal and hormonal communication. Its function is to regulate homeostatic systems—metabolic, cardiovascular, and immune—providing the necessary means to respond to a stressor.
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The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
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Major Hormones and Their Functions01:27

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Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
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The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
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产前和产后的挑战会影响下丘脑中调节激素水平的分子通路.

Sandra L Rodriguez-Zas1,2,3,4,5, Nicole L Southey6, Laurie Rund1

  • 1Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, United States of America.

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概括

产前和产后挑战相互作用,改变下丘脑基因表达,影响激素调节和神经递质活性. 这些影响因性别而异,突出显示了对大脑发育的复杂环境影响.

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科学领域:

  • 神经科学是一个神经科学.
  • 发展生物学 发展生物学
  • 基因组学就是基因组学.

背景情况:

  • 孕产妇免疫激活 (MIA) 和哺乳期停产是产前和产后的关键挑战.
  • 下丘脑在调解环境挑战的行为和感官反应方面发挥着关键作用.
  • 了解这些挑战的性别特异性和互动效应对于发展研究至关重要.

研究的目的:

  • 为了研究下丘脑如何调解产前 (MIA) 和产后 (护理戒断) 挑战对行为和刺激敏感性的影响.
  • 为了探索MIA,性别和在下丘脑中的护理戒断之间的潜在相互作用.
  • 确定这些相互作用背后的分子机制.

主要方法:

  • 利用病毒启动的母体免疫激活 (MIA) 的猪模型.
  • 从72只暴露于MIA和/或哺乳戒断的雄性和雌性猪中收集的下体质素.
  • 进行RNA测序以分析基因表达变化 (FDR调整后p < 0.05).

主要成果:

  • 在222个基因中确定了显著的差异性表达.
  • 调节激素水平的基因在暴露于这两种挑战的个体中经常过度表达.
  • 与男性相比,大多数激素调节基因在MIA女性中过度表达.
  • 嗅觉转导通路基因在断奶的MIA男性中过度表达.
  • 产前/产后挑战和性别影响神经递质活性和免疫过程.

结论:

  • 多种环境挑战相互作用,影响下丘脑的分子机制.
  • 这些相互作用影响激素调节,免疫反应和神经递质过程.
  • 性是下丘脑对发育挑战的反应的一个重要因素.