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相关概念视频

Exceptions to the Octet Rule02:55

Exceptions to the Octet Rule

28.5K
Many covalent molecules have central atoms that do not have eight electrons in their Lewis structures. These molecules fall into three categories:
28.5K
2° Amines to N-Nitrosamines: Reaction with NaNO201:20

2° Amines to N-Nitrosamines: Reaction with NaNO2

4.4K
Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
4.4K
SN2 Reaction: Transition State02:26

SN2 Reaction: Transition State

10.0K
An SN2 reaction of an alkyl halide is a single-step process in which bond formation between the nucleophile and the substrate and bond breaking between the substrate and the halide occurs simultaneously through a transition state without forming an intermediate.
When the nucleophile approaches the electrophilic carbon with its lone pairs, the halide acts as a leaving group and moves away with the electron-pair bonded to the carbon. Dotted partial bonds represent the bonds being formed or broken...
10.0K
Lewis Structures of Molecular Compounds and Polyatomic Ions02:54

Lewis Structures of Molecular Compounds and Polyatomic Ions

35.0K
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
35.0K
Noble Gases02:54

Noble Gases

17.6K

The elements in group 18 are noble gases (helium, neon, argon, krypton, xenon, and radon). They earned the name “noble” because they were assumed to be nonreactive since they have filled valence shells. In 1962, Dr. Neil Bartlett at the University of British Columbia proved this assumption to be false.
17.6K
1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview01:26

1° Amines to Diazonium or Aryldiazonium Salts: Diazotization with NaNO2 Overview

3.3K
Nitrous acid and nitric acids are two types of acids containing nitrogen, among which nitrous acid is weaker than nitric acid. Nitrous acid with a pKa value of 3.37 ionizes in water to give a nitrite ion and the hydronium ion.
The nitrous acid is unstable. Hence, it is formed in situ from a solution of sodium nitrite and cold aqueous acids such as hydrochloric or sulfuric acid. In an acidic solution, the –OH group of nitrous acid undergoes protonation to give oxonium ion, followed by...
3.3K

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Updated: Jul 28, 2025

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy
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Study of Protein Dynamics via Neutron Spin Echo Spectroscopy

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这就是ZnSO ZnSO.

Zhe Dong1, Lu Zhang2, Wei Wang2

  • 1Graduate School, Jinzhou Medical University, Jinzhou, Liaoning, China; Key Laboratory of Follicular Development and Reproductive Health of Liaoning Province, Jinzhou Medical University, Jinzhou, Liaoning Province, China.

Theriogenology
|June 3, 2023
PubMed
概括
此摘要是机器生成的。

硫酸 (ZnSO4) 通过保持卵巢功能和粒粉细胞活力,防止过早的卵巢衰竭 (POF). 这项研究强调了ZnSO4作为化学疗法期间潜在的生育保护剂.

关键词:
细胞灭亡 (apoptosis) 是一种死亡的过程.颗粒素细胞是颗粒素的细胞.在PI3K/AKT/GSK3β中.过早的卵巢衰竭是早期的卵巢衰竭.有反应性氧物种的反应性氧物种.ZnSO () () () () () () () () ) () () () () () () ) () () ) () () ) () () ) () ) () ) () ) () () ) () () ) () ) () ) () ) () ) () ) () ) () ) () ) () ) () ) ()

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科学领域:

  • 生殖生物学 生殖生物学
  • 毒理学 毒理学 毒理学
  • 生物化学 生化学

背景情况:

  • (Zn) 对女性生殖健康至关重要,具有抗炎和抗氧化特性.
  • 过早的卵巢衰竭 (POF) 对生育能力构成重大威胁,通常由诸如西斯等化疗剂诱导.
  • 了解在卵巢健康中的保护机制对于开发治疗策略至关重要.

研究的目的:

  • 调查硫酸 (ZnSO4) 对斯普拉格-道利 (SD) 鼠和卵巢颗粒细胞 (GCs) 产生的保护作用,以防止西斯普拉丁诱导的过早卵巢衰竭 (POF).
  • 阐明ZnSO4对卵巢损伤的保护作用所涉及的潜在分子机制.

主要方法:

  • 在体内研究中,使用西斯和ZnSO4治疗SD大鼠,测量血清激素水平 (雌激素[E2],卵泡刺激激素[FSH]),卵巢指数,并评估卵巢组织组织学.
  • 在体外研究中使用了用西斯普拉丁和ZnSO4治疗的花粉状细胞,评估细胞内水平,亡,反应性氧物种 (ROS) 生产和线粒体膜潜力 (MMP).
  • 研究了PI3K/AKT/GSK3β信号通路的参与.

主要成果:

  • 在老鼠中,施用ZnSO4增加了血清Zn2+水平,增强了E2分泌,并降低了FSH水平.
  • ZnSO4改善了卵巢指数,保护了卵巢组织和血管系统,减少了卵泡缩,并保持了卵泡发育.
  • 在体外,ZnSO4恢复了细胞内Zn2+水平,抑制了GC细胞亡,减少了西斯普拉丁诱导的ROS产生,并保存了MMP.
  • 发现ZnSO4通过激活PI3K/AKT/GSK3β通路来保护POF,从而减少GC亡.

结论:

  • 硫酸在体内和体外模型中都显示出显著的保护作用,防止因思丁诱导的过早卵巢衰竭.
  • ZnSO4通过减轻氧化应激,抑制亡和调节关键信号通路来保持卵巢功能.
  • 这些发现表明,ZnSO4具有保护卵巢健康和保持生育能力的治疗剂的潜力,特别是在化疗的背景下.