アシクロヴィルによる神経毒性および腎毒性におけるメタボリットの役割
Asma Aboelezz1, Sherif Hanafy Mahmoud1
1Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2E1, Canada.
Medicines (Basel, Switzerland)
|February 20, 2026
まとめ
腎臓と神経の損傷を含むアシクロビール (ACV) の毒性は,その代謝産物から生じる可能性があります. このレビューでは,ACV神経毒性における9-カルボキシメトキシメチルグアニン (CMMG) と腎毒性におけるアシクロビルアルデヒドの役割について検討しています.
科学分野:
- 薬理学 薬理学とは
- 毒理学 毒理学 毒理学
- ウイルス学 ウイルス学 ウイルス学
背景:
- アシクロビールはヘルペス感染症に対する重要な抗ウイルス薬です.
- アシクロビールの高濃度は,重大な腎臓毒性および神経毒性につながる可能性があります.
- アシクロヴィル誘発の毒性,特に神経毒性の背後にある正確なメカニズムは不明のままです.
研究 の 目的:
- アシクロビールの代謝産物との関連と,薬物の毒性に対するそれらの貢献をレビューする.
- メタボライト誘発性毒性のメカニズムに関する研究のギャップを特定する.
- 9-カルボキシメトキシメチルグアニン (CMMG) と8-ヒドロキシルアシクロビルの,アシクロビルの有害作用における潜在的な役割を調査する.
主な方法:
- この研究は,既存の文献の叙事的レビューです.
- それは,アシクロビールの代謝と毒性に関する発見を合成しています.
- それは,代謝物質誘発性腎臓毒性および神経毒性のための提案されたメカニズムを分析します.
主要な成果:
- アシクロビールは主に腎臓で分泌され,代謝によりCMMGと8-ヒドロキシルアシクロビールを生成します.
- 高濃度のCMMGは神経毒性に関連しています.
- アシクロビルアルデヒドは腎臓毒性に関与しています.
結論:
- アシクロビールの代謝産物,特にCMMGは,アシクロビール誘発の神経毒性と強く関連しています.
- アシクロビルアルデヒドは腎臓毒性に影響を与える可能性があります.
- これらの代謝物が毒性を引き起こす正確なメカニズムを明らかにするために,さらなる研究が必要です.
関連する概念動画
Drug Toxicity: Dose-Dependent Reactions
35
Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...
35
Phase II Reactions: Acetylation Reactions
878
Acetylation, a phase II biotransformation reaction, introduces an acetyl group to drugs or their metabolites. Acetyltransferase enzymes facilitate this reaction, which resembles α-amino acid conjugation due to the addition of a functional group to the drug molecule.
The substrates for acetylation are typically drugs or their metabolites with an amino, sulfonamide, or hydrazine functional group. Acetylation can occur at several points in the drug molecule, including primary, secondary, and...
The substrates for acetylation are typically drugs or their metabolites with an amino, sulfonamide, or hydrazine functional group. Acetylation can occur at several points in the drug molecule, including primary, secondary, and...
878
Pharmacogenetics of Phase II Enzymes: N-acetyltransferase, Thiopurine S-methyltransferase, UDP-glucuronosyltransferase
20
Phase II biotransformation reactions are essential for detoxifying and eliminating xenobiotics, including many pharmaceutical compounds. These reactions typically involve conjugation, the covalent attachment of polar endogenous groups such as glucuronic acid, sulfate, methyl, or acetyl moieties to functional groups introduced during Phase I metabolism. The resulting conjugates are more water-soluble, enabling efficient renal or biliary excretion.The major classes of Phase II enzymes include...
20
Toxic Reactions: Overview
2.6K
When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
2.6K
Bioactivation and Tissue Toxicity
35
Bioactivation is a metabolic process that transforms less reactive substances into highly reactive metabolites, initiating tissue toxicity. This transformation can lead to various toxic effects, including carcinogenesis and teratogenesis. Reactive metabolites are classified into two main types: electrophiles and free radicals.Electrophiles are electron-deficient species and are produced primarily by the enzyme cytochrome P-450 during the metabolism of compounds containing carbon, nitrogen, or...
35
Drug Toxicity: Overview
53
Drug toxicity quantifies the harm a compound causes to an organism, varying by dose and potentially impacting whole systems or specific organs like the liver. Toxic reactions may arise from venomous insect or spider bites, with effects ranging from mild symptoms to severe outcomes such as brain damage or death. Common forms of acute poisoning include ethanol intoxication and overdose of pain or fever medications, with substances like GHB and heroin being particularly lethal at doses close to...
53


