赤ワインのポリフェノールは,2つの異なるシグナル伝達経路を通じて,血管の滑らかな筋肉細胞の移動を阻害します
Katsuya Iijima1, Masao Yoshizumi, Masayoshi Hashimoto
1Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Circulation
|May 22, 2002
まとめ
赤ワインポリフェノール (RWPs) は,重要なシグナル伝達経路を遮断することによって,血管の滑らかな筋肉細胞の移動を阻害し,潜在的な抗アテロゲン効果を提供します. この研究は,RWPsを明確にします.
科学分野:
- 心血管科学の研究について
- 分子生物学は分子生物学である.
- 薬理学 薬理学とは
背景:
- 赤ワインのポリフェノール (RWPs) は,主にLDLの酸化に対する抗酸化作用を通じて,抗アテロゲン性を持ちます.
- 血管の滑らかな筋肉細胞 (SMC) の移動は,動脈硬化症の発達における重要な要因です.
- RWPがSMCの移住に及ぼす具体的な影響は,ほとんど調査されていない.
研究 の 目的:
- RWPが栽培SMCの移住に影響を与えているかどうかを判断する.
- RWPsがSMCの移行に影響を与える根本的なシグナルメカニズムを調査する.
主な方法:
- 血小板誘発成長因子 (PDGF-BB) と血清誘発SMC移動に対するRWP効果を,傷害およびボイドン室測定を用いて評価した.
- 血管内皮細胞の移動に対する評価されたRWPの影響.
- RWP媒介によるSMC阻害におけるフォスファディチルイノシトール-3'-キナーゼ (PI3K) とミトゲン活性化タンパク質キナーゼ (MAPK) 経路 (p38(MAPK,ERK1/2) の役割について調査した.
主要な成果:
- RWPsは,血管内皮細胞に影響を与えることなく,PDGF-BBと血清誘発SMC移動の濃度依存的抑制を示した.
- PI3Kとp38 ((MAPK) の阻害剤はERK1/2ではないが,PDGF-BB誘発のSMCの移行を減少させた.
- RWPsはPI3Kの活性とp38 (MAPK) のリン酸化 (MKK3 / 6の前方) を抑制し,移住抑制と相関していました.
結論:
- RWPは,異なるPI3Kとp38 (MAPK) 信号経路を抑制することによって,SMCの移行を効果的に抑制します.
- これらの発見は,小傷の発達に関与する重要な細胞過程を調節することによって,RWPsの抗アテロゲン性を支持しています.
関連する概念動画
Paracrine Signaling
Paracrine signaling allows cells to communicate with their immediate neighbors via secretion of signaling molecules. Such a signal can only trigger a response in nearby target cells because the signal molecules degrade quickly or are inactivated if not taken up. Prominent examples of paracrine signaling include nitric oxide signaling in blood vessels, synaptic signaling of neurons, the blood clotting system, tissue repair/wound healing, and local allergic skin reactions. Nitric oxide as a...
Nitric Oxide Signaling Pathway
Nitric oxide (NO), an inorganic gas, acts as a potent second messenger in most animal and plant tissues. NO diffuses out of the cells that produce it and enters the neighboring cells to generate a downstream response. NO synthase (NOS) catalyzes NO production by the deamination of the amino acid arginine. There are three isoforms of NOS. Endothelial cells have endothelial NOS (eNOS), nerve and muscle cells have neuronal NOS (nNOS), and macrophages produce inducible NOS (iNOS) upon exposure to...
Local Anesthetics: Differential Sensitivity of Nerve Fibers
Local anesthetics (LAs) block the sodium channels of nerve trunks, sensory nerve endings, and neuromuscular junctions. Although LAs can block all kinds of nerves, the sensitivity of nerve fibers differs according to nerve types and structures. LAs are known to block myelinated fibers faster than unmyelinated ones. Also, they block pain or sensory neurons at low concentrations without affecting the motor neurons involved in muscle contractions. This helps relieve labor pain without affecting the...
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors
Antiplatelet drugs emerge as frontline defenders against the insidious threat of thromboembolic diseases, where abnormal clots obstruct vital blood vessels. These drugs stand as bulwarks, inhibiting platelet aggregation and clot formation, thereby mitigating the risk of life-threatening conditions like myocardial infarction, coronary artery disease, and thrombotic strokes.
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
Peripheral Artery Disease I: Introduction
Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
Diabetic Neuropathy
DefinitionDiabetic neuropathy is nerve damage caused by long-standing diabetes mellitus. It results directly from prolonged high blood sugar levels.PathophysiologyThe pathophysiology of diabetic neuropathy involves both metabolic and vascular disturbances triggered by chronic hyperglycemia.Metabolic injury: Elevated glucose levels activate the polyol pathway within nerve cells, leading to the accumulation of sorbitol and fructose. This increases oxidative stress, disrupts normal nerve...


