高齢者の副腎ステロイド生合成における環境汚染物質
Mark M Kushnir1, Samira Salihovic2, Jonas Bergquist3
1ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT, United States of America; Department of Pathology, University of Utah, Salt Lake City, UT, United States of America.
The Science of the total environment
|December 19, 2025
まとめ
環境汚染物質(EC)は、高齢者の副腎ステロイド(AS)レベルと関連している。プレグネノロン(Pregn)はECとの関連が最も強く、コルチゾールは最も影響を受けなかった。
科学分野:
- 内分泌学
- 環境保健学
- 毒物学
背景:
- 以前の研究では、環境汚染物質(EC)と高齢者の性ホルモンの関連が示されていました。
- 本研究では、4つのクラスのECと、コルチゾールとその前駆体を含む5つの副腎ステロイド(AS)との関連を調査します。
研究 の 目的:
- 高齢者における様々な環境汚染物質の血中濃度と副腎ステロイドレベルの関係を調査すること。
- EC曝露による副腎ステロイド生合成に影響を与える潜在的な構造活性相関を探求すること。
主な方法:
- 高齢者950人(年齢70歳)の血漿サンプルを分析しました。これは、Uppsala Seniorsにおける血管系の前向き調査(PIVUS)研究からのものです。
- 4つの副腎ステロイド(プレグネノロン、17-ヒドロキシプレグネノロン、17-ヒドロキシプロゲステロン、11-デオキシコルチゾール)とコルチゾールを定量化しました。
- 質量分析法とELISAを使用して、21の残留性有機汚染物質(POP)、8のペルフルオロアルキル物質(PFAS)、4のフタル酸エステル、および10の金属を測定しました。
主要な成果:
- 環境汚染物質の全クラスは、副腎ステロイド濃度と複雑な関連を示しました。
- プレグネノロン(Pregn)はECとの関連が最も強く、コルチゾールは最も影響を受けませんでした。
- Pregn、17-ヒドロキシプロゲステロン、17-ヒドロキシプレグネノロンと特定のPCB、フタル酸エステル、金属(Al、Cd、Cu、Hg、Ni)との間に最も強い関係が観察され、女性でより強い影響がありました。
結論:
- 高齢者は、コルチゾール経路内の多数の環境汚染物質の濃度と副腎ステロイドとの関連を示します。
- EC-AS関係が副腎ステロイド生合成に関連する疾患に及ぼす臨床的意義については、さらなる調査が必要です。
関連する概念動画
Adrenal Gland Disorders
2.8K
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...
2.8K
Hormones of the Adrenal Glands
4.4K
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...
4.4K
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism
181
Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
181
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion
217
In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
217
Aging
566
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
566
Drug Dosing: Geriatric Patients
209
Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
209


