このページは機械翻訳されています。他のページは英語で表示される場合があります。 View in English

副作用のバイオマーカーとしてのアゴニスティック・アニオテンシン受容体自己抗体の発見と検証

  • 0From Biology of Healthy Aging Program, Division of Geriatric Medicine and Gerontology, Department of Medicine, Johns Hopkins University, Baltimore, MD (P.M.A., A.A.J., L.J.P., Q.-L.X., J.D.W., N.S.F.); Center on Aging and Health, Johns Hopkins University, Baltimore, MD (P.M.A., Q.-L.X., J.D.W., N.S.F.); Department of Biostatistics, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD (J.T.); Departments of Medicine and Pathology, Johns Hopkins University School of Medicine, Baltimore, MD (R.G.H.); and Rush Institute on Healthy Aging, Rush University Medical Center, Chicago, IL (D.A.B.).

|

|

まとめ

この要約は機械生成です。

アニオテンシンII型1受容体自己抗体 (AT1RaAbs) は,高齢者の炎症,高血圧,有害な健康結果と相関しています. 血管新生受容体ブロッカーの治療は,これらのリスクを軽減し,患者のアウトカムを改善することができます.

科学分野

  • 心血管研究
  • 免疫学
  • ゲロントロジー

背景

  • アニオテンシンII型1受容体自己抗体 (AT1RaAbs) は,機能的測定値や有害な健康結果と明確に関連していない.
  • AT1RaAbsは患者のリスクを分層化し,血管新生素受容体阻害剤 (ARB) 治療の候補者を特定する可能性があります.

研究 の 目的

  • コミュニティに住む成人のAT1RaAbsと機能的な測定値と有害な健康結果との関連を調査する.
  • 高いAT1RaAbレベルを有する個体における結果に対するARB治療の影響を調査する.

主な方法

  • ボルチモアの発見コホート (N=255) とシカゴの検証コホート (N=60) を分析した.
  • 人口統計,生理学的データ,身体機能検査,健康の結果を評価した.
  • ARB治療の効果を含むAT1RaAbsとアウトカムとの関連が調査されました.

主要な成果

  • 高いAT1RaAbsは,炎症 (IL-6),高血圧,高いBMI,弱い握り力,そして遅い歩行速度と相関しています.
  • 高いAT1RaAbsは,転倒,脆弱性,および死亡率の増加と関連していました.
  • シカゴのコホートでは,AT1RaAbsは転倒と相関し,死亡までの時間を短縮しました.
  • ARB治療は,血圧の改善と,握り力の低下と生存率の低下と関連していました.

結論

  • 高齢者のAT1RaAbレベルは,炎症,高血圧,有害な健康結果と関連しています.
  • ARB治療は高レベルのAT1RaAbの悪影響を軽減する可能性がある.

関連する概念動画

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System 01:26

1.3K

The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...

Antihypertensive Drugs: Angiotensin II Receptor Blockers 01:30

2.9K

In the renin-angiotensin-aldosterone system, a hormone called angiotensin II plays a crucial role. It binds to the AT1 receptors in vascular smooth muscles coupled with Gq proteins. The activation of these receptors activates an enzyme called phospholipase C, which releases two molecules: inositol trisphosphate and diacylglycerol. These molecules cause a chain reaction that leads to the phosphorylation of myosin light chains and promotes interaction between actin and myosin, leading to smooth...

Antihypertensive Drugs: Direct Renin Inhibitors 01:25

1.7K

The renin-angiotensin-aldosterone system (RAAS) is an intricate physiological pathway involving numerous enzymes and hormones, including renin, angiotensin-converting enzyme (ACE), angiotensin I and II, and aldosterone. Imbalances within this system increase the production of angiotensin II and aldosterone. Increased angiotensin II levels promote vasoconstriction and blood pressure elevation. Concurrently, higher aldosterone levels stimulate sodium and water reabsorption in the kidneys,...

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers 01:19

681

Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...

Blood Studies for Cardiovascular System I: Cardiac Biomarkers 01:20

1.0K

Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...

Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors 01:30

2.7K

Angiotensin-converting enzyme (ACE), a vital component of the renin-angiotensin-aldosterone system, is abundant in lung endothelial cells. ACE converts the inactive decapeptide, angiotensin I, into the active octapeptide, angiotensin II. This potent vasoconstrictor narrows blood vessels, increasing resistance to blood flow and elevating blood pressure. Angiotensin II also stimulates aldosterone production, encouraging kidney cells to reabsorb more sodium and water from urine, thereby increasing...