相关实验视频
Updated: Jan 31, 2026

06:08
A Novel Method: Super-selective Adrenal Venous Sampling
Published on: September 15, 2017
24.3K
酸盐及其替代品对上腺类固醇生成的破坏性影响
Benedikt Pötzl1, Max Kurlbaum1,2, Sabine Kendl2
1Division of Endocrinology and Diabetology, Department of Internal Medicine I, University Hospital of Würzburg, Würzburg, Germany.
Frontiers in endocrinology
|January 30, 2026
概括
酸盐及其替代物破坏上腺类固醇生成,增加皮质醇和阿尔多. 像DEHT和DINCH这样的新兴替代品表现出与传统酸盐类似的内分泌干扰作用.
科学领域:
- 内分泌学 在内分泌学.
- 毒理学 毒理学 毒理学
背景情况:
- 酸盐是常见的增塑剂,具有已知的内分泌干扰作用.
- 新兴的替代品可能会带来类似的风险,但它们对上腺功能的影响尚不清楚.
研究的目的:
- 调查酸盐及其替代品对上腺类固醇生成的影响.
- 为了比较传统酸盐和新型替代品的内分泌干扰潜力.
主要方法:
- 类固醇的NCI-H295R细胞暴露在酸盐 (DEHP,DiBP,DiNP) 和替代物 (DEHA,DEHT,DINCH) 中.
- 使用LC-MS/MS,相对酶活性计算和RT-qPCR分析了类固醇分泌,酶活性和基因表达.
主要成果:
- 酸盐和替代品显著增加皮质醇,皮质和阿尔多斯特水平.
- 酶活性失调,显著抑制HSD11B2.2.
- 关键类固醇酶 (CYP11B1,CYP11B2) 和受体 (MC2R,AGTR1) 的基因表达增加.
结论:
- 酸盐和替代物诱导上腺类固醇生成的干扰,有利于矿物质和葡萄糖皮质激素的分泌.
- 新兴的替代品表现出与古典酸盐类似的内分泌干扰作用.
- 这些发现表明,可能与二次高血压有关.
相关概念视频
Anatomy of the Adrenal Glands
4.8K
The adrenal or supra-renal glands, situated above the kidneys and aligned with the twelfth rib, are paired pyramid-shaped structures crucial for the body's stress response. During stress, these glands secrete hormones vital for adaptive physiological reactions.
These glands possess a distinctive yellow tinge due to the stored cholesterol and fatty acids required for hormone synthesis. They are encased in a fibrous capsule and cushioned by fat.
The adrenal gland comprises two distinct...
These glands possess a distinctive yellow tinge due to the stored cholesterol and fatty acids required for hormone synthesis. They are encased in a fibrous capsule and cushioned by fat.
The adrenal gland comprises two distinct...
4.8K
Adrenal Gland Disorders
3.3K
Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
Adrenal insufficiency, characterized by insufficient cortisol and aldosterone production, leads to conditions like Addison's disease. This disorder, affecting the adrenal cortex, exhibits symptoms such as skin bronzing, dehydration, low blood pressure, fatigue, and weight loss. Congenital adrenal hyperplasia, a genetic ailment causing...
Adrenal insufficiency, characterized by insufficient cortisol and aldosterone production, leads to conditions like Addison's disease. This disorder, affecting the adrenal cortex, exhibits symptoms such as skin bronzing, dehydration, low blood pressure, fatigue, and weight loss. Congenital adrenal hyperplasia, a genetic ailment causing...
3.3K
Hormones of the Adrenal Glands
5.4K
Adrenal hormones play a pivotal role in maintaining the body's electrolyte balance and orchestrating responses to stress, showcasing the intricate functions of the adrenal cortex and medulla.
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and...
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and...
5.4K
Trigonometric Substitution
59
Trigonometric substitution is a technique used to simplify integrals that contain square root expressions involving quadratic forms. It is particularly effective when the integrand includes terms resembling those found in standard geometric equations, such as circles or ellipses.Molniya satellites follow highly elliptical orbits, repeatedly sweeping out the same regions of space as they revolve around Earth. To estimate the area enclosed by such an orbit, the path is modeled as an ellipse...
59
Rationalizing Substitutions
59
Integrals involving non-rational functions are often difficult to evaluate using standard techniques, especially when radicals appear in the integrand. Rationalizing substitution provides a systematic method for simplifying such integrals by converting them into rational forms that are easier to handle.Consider a rod whose linear mass density depends on a constant linear density, a characteristic length, and the distance from the left end of the rod. Determining the total mass requires...
59
Diazonium Group Substitution: –OH and –H
3.4K
Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
3.4K

