プロスタサイクリンとトロンボキサンによる変化が,出産前不妊症の臨床的発症に先行する:多センター展望試験
J L Mills1, R DerSimonian, E Raymond
1Epidemiology Branch, Division of Epidemiology, Statistics and Prevention Research, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA.
JAMA
|August 4, 1999
まとめ
減少したプロスタサイクリン (PGI2) 産生,増加したトロンボキサンA2 (TxA2) は,妊娠前出血症の発症に先行する. この発見は,将来の介入は,妊娠前出血症におけるイコサノイド濃度の再バランスをとるため,PGI2欠乏症の修正に重点を置くべきであることを示唆しています.
科学分野:
- 産婦人科と産婦人科を担当しています.
- 心血管生理学 心血管の生理学
- 生殖医学は,生殖器医学である.
背景:
- 産前不妊症は,血管拡張性プロスタサイクリン (PGI2) と血管収縮性トランボキサンA2 (TxA2) の不均衡を伴う.
- TxA2を標的とした以前のアスピリン試験では,子宮内閉症を予防できず,イコサノイド変化のタイミングを調査する必要がありました.
- エイコサノイドの変異が妊娠前出血症の原因か,または結果であるかどうかは不明である.
研究 の 目的:
- PGI2またはTxa2の変化が,出産前の不妊症の臨床的症状の前に発生するかどうかを調査する.
- エイコサノイドの不均衡と妊娠前出血症の発症の間の時間的関係を決定する.
主な方法:
- プレエクラムプシア予防試験のためのカルシウム (1992-1995) のプラセボアームの女性を対象とした多センター前向きな研究.
- 妊娠前出血症を発症した女性 (n=134) とマッチングした正圧対照群 (n=139) の比較.
- 尿中のプロスタサイクリン (PGI-M) とトロンボキサンA2 (Tx-M) メタボリットを複数の妊娠時点 (22週前,26-29週前,36週前) で測定する.
主要な成果:
- 妊娠中,妊娠前出血症を発症した女性は,妊娠中のPGI-Mレベルが著しく低下し,妊娠13〜16週目から明らかになりました.
- 妊娠年齢調整のPGI-Mレベルは,妊娠前の女性では対照群と比較して17%低かった.
- Tx-Mレベルはグループによって有意に異なることはなかったが,Tx-MとPGI-Mの比率は,出産前の女性では24%高く,血管収縮へのシフトを示した.
結論:
- 減少したプロスタサイクリン (PGI2) 生産は,臨床診断の数ヶ月前に発生する,妊娠前出血症の発症に先立つ早期のイベントです.
- トロンボキサンA2 (TxA2) 産血前症における主要な異常は,トロンボキサンA2 (TxA2) 産血前症における主要な異常ではない.
- 妊娠前出血症の将来の治療戦略は,エコサノイドのバランスを回復するために,プロスタサイクリン欠乏症に対処することを優先すべきである.
関連する概念動画
Teratogenicity
The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
Blood Studies for Cardiovascular System I: Cardiac Biomarkers
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...
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...
Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers
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...
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 III: Serum Lipid Profile
Understanding serum lipids is crucial for maintaining cardiovascular health and preventing heart disease and stroke.
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
Serum lipids are fats and fatty substances in the blood and are crucial for various bodily functions, including energy storage, cellular structure, and hormone production. Serum lipids consist of cholesterol, triglycerides, and phospholipids.
Cholesterol is a soft, fat-like substance found in all body cells. It is crucial for producing hormones, vitamin D, and substances that aid...
Acute Coronary Syndrome III: Diagnostic Studies
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Development of the Oral Microbiota
The establishment of the oral microbiome begins before birth, challenging the long-held belief that the fetal oral cavity is sterile. The presence of oral microbes such as Streptococcus and Fusobacterium in amniotic fluid suggests that microbial exposure may occur in utero, potentially through translocation from the maternal oral or gastrointestinal tract. This early colonization primes the neonatal immune system and sets the stage for subsequent microbial succession. Maternal health,...


