関連する実験動画
Updated: Aug 7, 2026

09:52
Trans-Tympanic Drug Delivery for the Treatment of Ototoxicity
Published on: March 16, 2018
9.9K
シスプラチン誘発毒性に対する霊芝多糖体ペプチドの保護効果
Zumin Hou1, Weiling Ji2, Shangpeng Yang1
1Key laboratory of molecular pharmacology and translational research, School of Pharmacy, Shandong Second Medical University, Weifang 261053, Shandong, China.
Journal of ethnopharmacology
|January 15, 2026
まとめ
霊芝ペプチド(GL-PPおよびGL-PP2)は、複数の臓器におけるシスプラチン毒性から保護します。GL-PP2は、特定のシグナル伝達経路を介して炎症、酸化ストレス、アポトーシスを軽減することにより、優れた有効性を示します。
科学分野:
- 薬理学および毒性学
- 天然物研究
- 細胞生物学および分子生物学
背景:
- 霊芝(G. lucidum)は、活力と臓器サポートの目的で歴史的に使用されてきた伝統的な中国医学です。
- その抽出物は、免疫調節作用と抗酸化作用で知られており、臓器保護に関心を集めています。
- 霊芝は、慢性炎症、疲労、毒素誘発性臓器障害の管理に伝統的に使用されてきました。
研究 の 目的:
- 霊芝多糖体ペプチド(GL-PP)および霊芝多糖体ペプチド2(GL-PP2)のシスプラチン(CDDP)誘発性多臓器毒性に対する保護効果を調査すること。
- CDDP誘発性毒性を軽減する上でのGL-PPおよびGL-PP2の作用機序を解明すること。
主な方法:
- 臓器保護を評価するために、invivoおよびinvitroモデルの両方を使用しました。
- 主要な生化学的指標、組織学的変化、酸化ストレス、炎症、線維症、アポトーシスを評価しました。
- 分子メカニズムを解明するために、ネットワーク薬理学とウェスタンブロッティングを利用しました。
主要な成果:
- GL-PPおよびGL-PP2は、CDDPによって引き起こされる心臓、肝臓、腎臓の機能を改善し、損傷と線維症を軽減しました。
- GL-PP2(200 mg/kg)は、Akt/GSK-3β/Nrf2経路を活性化することにより、顕著な抗炎症および抗酸化効果を示しました。
- BCL-2、BAX、および切断型カスパーゼ-3を含む、アポトーシス関連の主要タンパク質を調節しました。
結論:
- GL-PPおよびGL-PP2は、CDDP毒性に対して多臓器保護を提供します。
- 保護は主にAkt/GSK-3β/Nrf2シグナル伝達経路を活性化することによって媒介されます。
- GL-PP2は、GL-PPと比較して優れた保護効果を示しました。
関連する概念動画
Drugs Affecting GI Tract Motility: Serotonin Receptor Agonists
Serotonin, a crucial neurotransmitter synthesized by enterochromaffin cells, plays a cardinal role in regulating gastrointestinal (GI) motility. With over 90% of the body's total serotonin in the GI tract, its influence on digestive processes is profound. Serotonin is swiftly released upon various stimuli, such as food boluses or certain drugs, triggering intrinsic sensory neurons in the myenteric plexus and extrinsic vagal and spinal sensory neurons. This leads to the activation of the...
Oral Hypoglycemic Agents: Biguanides and Glitazones
Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood glucose levels...
Oral Hypoglycemic Agents: Glinides
Repaglinide (Prandin) and Nateglinide (Starlix), known as glinides, are oral insulin secretagogues that stimulate insulin release from pancreatic β cells by closing the ATP-sensitive potassium channels (KATP channel). Repaglinide controls insulin release from pancreatic β cells by managing potassium efflux. It shares two binding sites with sulfonylureas and also has a unique site, indicating overlapping mechanisms of action. With a rapid onset and a 4-7 hour duration, it effectively manages...
Oral Hypoglycemic Agents: α-Glucosidase Inhibitors
α-glucosidase inhibitors, including acarbose (Precose), miglitol (Glyset), and voglibose (Voglib) (primarily available in Asia), are drugs that control blood sugar levels by delaying the digestion of starch and disaccharides. They achieve this by inhibiting α-glucosidase enzymes in the intestine, which slow the absorption of carbohydrates in the intestine, which in turn leads to a prolonged release of the glucoregulatory hormone GLP-1 from intestinal L-cells.
Acarbose and miglitol are typically...
Acarbose and miglitol are typically...
Dipeptidyl Peptidase 4 Inhibitors
Dipeptidyl peptidase 4 (DPP-4) is a serine protease widely distributed in the body. It's involved in the inactivation of GLP-1 and GIP hormones, which are crucial for insulin regulation. DPP-4 inhibitors, such as sitagliptin (Januvia), saxagliptin (Onglyza), linagliptin (Tradjenta), alogliptin (Nesina), and vildagliptin (Galvus), help increase the proportion of active GLP-1, enhancing insulin secretion. These inhibitors work by competitively binding to DPP-4. This binding causes a significant...
Stimulants
Stimulants are substances that enhance neural activity and elevate dopamine levels in the brain, leading to their highly addictive nature. These drugs include cocaine, amphetamines, MDMA, caffeine, and nicotine, each with distinct mechanisms of action and varied health implications.
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
