クロロロゲン酸は,TLR4/NF-κBシグナル伝達経路を通じて酸化ストレスと炎症反応を減少させ,酸誘発の頭損傷を改善する
Yi Lin1, Lili Li2, Jianbin Cheng3
1Department of Otolaryngology, Fujian Provincial Geriatric Hospital, Fuzhou, China.
Clinical and experimental pharmacology & physiology
|August 26, 2025
まとめ
クロロゲン酸 (CGA) は,小耳の酸化ストレスと炎症を軽減することによって,サリチ酸ナトリウム (SS) によって引き起こされる聴覚障害から保護します. この研究は,CGAが
科学分野:
- 耳毒性研究
- 薬理学について
- 神経科学
背景:
- 塩酸ナトリウム (SS) は聴覚障害と耳鳴りを引き起こすことが知られている.
- クロロゲン酸 (CGA) は,抗酸化および抗アポプトティックな性質を有する.
- CGAの頭に対する保護効果は未調査のままである.
研究 の 目的:
- 塩素酸 (CGA) が,塩素塩酸 (SS) によって引き起こされる耳毒性に対する潜在的な保護効果を調査する.
- コクレアにおけるCGAの保護作用の基礎となるメカニズムを解明する.
主な方法:
- SSを使用したラットでは頭損傷が誘発された.
- ネズミはCGA (150,300,600 mg/kg) の様々な用量で治療された.
- 耳鳴り行動,酸化ストレス,炎症,内病理,アポトーシス,TLR4/NF- kB経路を評価した.
主要な成果:
- 聴覚性脳幹応答 (ABR) と行動テストによって証明された.
- 酸化ストレス (ROS,MDA) と炎症 (TNF-α,IL- 1β) マーカーの増加
- CGA治療は,SS誘発の頭損傷,アポトーシス,およびTLR4/NF- kB経路の活性化を有意に改善しました.
結論:
- クロロゲン酸 (CGA) は,塩酸ナトリウム (SS) による耳毒性を効果的に軽減します.
- CGAは,TLR4/NF- kB経路を阻害することで,酸化ストレスと炎症を軽減します.
- CGAは,頭損傷およびそれに関連する聴覚障害を予防する有望な効果を示しています.
関連する概念動画
Nociception
28.4K
Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
28.4K
NF-κB-dependent Signaling Pathway
7.6K
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The...
NF-κB-dependent Signaling Mechanism
The...
7.6K
Inflammatory Response
12.5K
An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
12.5K
Formation of Lipopolysaccharides
1.1K
Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin,...
1.1K
Acute Inflammation I: Inflammatory Response
94
Acute inflammation is a rapid, short-lived physiological response to tissue injury or infection, designed to eliminate harmful agents and initiate repair. This tightly regulated process typically lasts from minutes to several days and is triggered by factors such as microbial invasion, physical trauma, or chemical injury.Recognition and Mediator ReleaseThe inflammatory response begins when resident immune cells—such as mast cells, macrophages, and dendritic cells—detect...
94
Gastritis II: Pathophysiology
52
The pathophysiology of gastritis begins with the colonization of the stomach lining by Helicobacter pylori (H. pylori). This bacterium spreads mainly via the oral-oral route through saliva or shared utensils, and can also be transmitted in overcrowded or unhygienic environments through contaminated water, despite its brief survival outside the body.ColonizationOnce ingested, H. pylori enters the stomach and begins colonization by navigating through the mucus layer lining the stomach wall. It...
52


