catalase

Catalase 是重要的抗氧化酶,在清除 ROS 及维持氧化还原状态的平衡方面发挥着重要作用。Catalase 与肿瘤的发生,发展关系密切。有潜力用于肿瘤的预防研究。

EUK-134 是合成的超氧化物歧化酶和过氧化氢酶模拟物，可保护大鼠肾脏免受缺血再灌注引起的损伤。它作用于 H9C2 细胞，降低NF-κB 表达、MDA 水平和蛋白质羰基化。它是具有过氧化氢酶活性的超氧化物歧化酶 (SOD) 模拟物 (SODm)。它是保护有丝分裂的抗氧化剂。

3-Amino-1,2,4-triazole (Trapidil impurity B) 是一种过氧化氢酶抑制剂，能够诱导过氧化氢解毒的补偿机制。 该机制涉及增加谷胱甘肽过氧化物酶和谷胱甘肽还原酶的活性。

Manganese(salen) chloride (EUK-8) 是超氧化物歧化酶和过氧化氢酶的一种模拟物，具有氧自由基清除性能。它可减轻内毒素血症猪的急性肺损伤。

Gepotidacin mesylate dihydrate (GSK2140944 mesylate dihydrate) 是一种可口服的三氮杂苊烯抗生素，具有抗菌活性。Gepotidacin mesylate dihydrate 是细菌 II 型拓扑异构酶抑制剂。Gepotidacin mesylate dihydrate 通过阻断拓扑异构酶来抑制细菌 DNA 复制，可用于研究细菌感染。

DL-3-Phenyllactic acid (3-Phenyllactic acid) 是广谱抗菌化合物，对细菌和真菌具有活性。

2-Pyridinecarbohydrazide (2-Picolinyl hydrazide) 是 Catalase-peroxidase-NAPDH 的有效抑制剂。它普遍用于各种合成领域的砌块。

Antifungalagent 117 是一种双吡唑羧酰胺衍生物，展现出对抗真菌 Sclerotinia sclerotiorum 的活性，其EC50值达11.58 mg/L。该化合物通过提高细胞膜通透性，引起细胞内外渗透压的失衡；同时通过促进活性氧 (ROS) 的累积，对细胞膜进行氧化破坏，导致细胞内容物外泄，最终诱导细胞死亡。RNA 测序分析揭示，Antifungalagent 117 通过下调过氧化氢酶基因及上调中性酰胺酶基因，破坏细胞膜结构，加速鞘脂类代谢和细胞死亡过程。此化合物因其在植物保护和抗真菌感染方面显示的应用潜力而被重视。

Diallyl tetrasulfide is an organosulfur compound that has been found in A. sativum and has diverse biological activities, including antimicrobial, antioxidant, and anticancer properties.[1],[2],[3],[4] It is active against the bacteria S. aureus and methicillin-resistant S. aureus (MRSA; MICs = 0.5 and 2 mg/L, respectively), as well as the fungi C. albicans, C. krusei, C. glabrata, A. niger, A. flavus, and A. fumigatus (MICs = 0.5, 4, 2, 1, 2, and 4 mg/L, respectively).[1] It reduces cadmium-induced increases in hepatic levels of thiobarbituric acid reactive substances (TBARS) and increases cadmium-induced decreases in the hepatic activity of superoxide dismutase (SOD1), catalase, GST, and glucose-6-phosphate dehydrogenase (G6PDH) in rats when administered at a dose of 40 mg/kg.[2] Diallyl tetrasulfide is cytotoxic to MCF-7 breast cancer cells (IC50 = 92 μM) and reduces tumor growth in a BGC-823 mouse xenograft model when administered at doses of 20, 30, and 40 mg/kg for 32 days.[3],[4]

AMK is an active metabolite of the neurohormone melatonin .1,2,3,4It is formed from melatoninviathe metabolic intermediate AFMK that is then deformylated by catalase or formamidase.5,6AMK scavenges singlet oxygenin vitrowhen used at a concentration of 200 μM.1It inhibits the epinephrine- and arachidonic acid-induced production of prostaglandin E2and PGD2in ovine seminal vesicle microsomes in a concentration- and time-dependent manner, as well as LPS-induced increases in COX-2 levels in RAW 264.7 macrophages when used at a concentration of 500 μM.2,3AMK (20 mg/kg) decreases MPTP-induced increases in lipid peroxidation in the cytosol and mitochondria from substantia nigra and striatum in a mouse model of MPTP-induced Parkinson’s disease.4 1.Schaefer, M., and Hardeland, R.The melatonin metabolite N1-acetyl-5-methoxykynuramine is a potent singlet oxygen scavengerJ. Pineal Res.46(1)49-52(2009) 2.Kelly, R.W., Amato, F., and Seamark, R.F.N-acetyl-5-methoxy kynurenamine, a brain metabolite of melatonin, is a potent inhibitor of prostaglandin biosynthesisBiochem. Biophys. Res. Commun.121(1)372-379(1984) 3.Mayo, J.C., Sainz, R.M., Tan, D.-X., et al.Anti-inflammatory actions of melatonin and its metabolites, N1-acetyl-N2-formyl-5-methoxykynuramine (AFMK) and N1-acetyl-5-methoxykynuramine (AMK), in macrophagesJ. Neuroimmunol.165(1-2)139-149(2005) 4.Tapias, V., Escames, G., López, L.C., et al.Melatonin and its brain metabolite N1-acetyl-5-methoxykynuramine prevent mitochondrial nitric oxide synthase induction in parkinsonian miceJ. Neurosci. Res.87(13)3002-3010(2009) 5.Tan, D.-X., Manchester, L.C., Reiter, R.J., et al.Melatonin directly scavenges hydrogen peroxide: A potentially new metabolic pathway of melatonin biotransformationFree Radic. Biol. Med.29(11)1177-1185(2000) 6.Hirata, F., Hayaishi, O., Tokuyama, T., et al.In vitro and in vivo formation of two new metabolites of melatoninJ. Biol. Chem.249(4)1311-1313(1974)

Ibuprofen carboxylic acid is a major metabolite of ibuprofen . It prevents fructose-, cyanate-, and prednisolone-induced inactivation of catalase and fructose- and cyanate-induced inactivation of fumarase when used at a concentration of 2 mM and penetrates into the lens of isolated bovine eyes. Ibuprofen carboxylic acid has been found in bank filtrate and surface water, as well as influent and effluent wastewater, and is considered a micropollutant.

Morin monohydrate (oxylon pomiferum monohydrate)是一种从桑树植物中提取的黄酮类化合物，具有抗癌、抗氧化和抗炎活性，可降低 T-2 毒素诱导的 TNF-α、COX-2、IL-1β、IL-6、caspase-1、caspase-3 和 caspase-11 mRNA 的表达，通过减少丙二醛 （MDA）、增加超氧化物歧化酶 （SOD）、过氧化氢酶 （CAT）、谷胱甘肽 （GSH） 和谷胱甘肽过氧化物酶 （GSH-PX） 来改善 T-2 毒素诱导的损伤。

BTA-EG6 is a novel catalase-amyloid interaction inhibitor, penetrating the blood-brain barrier and protecting cells from Aβ-induced toxicity.

HMS607P03 is an activator of SIRT1 which induces autophagic cell death via the AMPK-mTOR-ULK complex and induces mitophagy by the SIRT1-PINK1-Parkin pathway. HMS607P03 downregulates 14-3-3γ, catalase, profilin-1, and HSP90α.

Dapsone hydroxylamine (DDS-NOH) 诱导高铁血红蛋白血症，同时抑制过氧化氢酶 (CAT) 活性及活性氧生成，且展现出抗炎活性。

SP4f为PPAR-γ激活剂，其在HK-2细胞中EC50值为826 nM。在瑞士白化病小鼠中，SP4f能够降低血糖和脂质过氧化水平，同时提升谷胱甘肽含量和过氧化氢酶活性。

InhA-IN-2直接抑制 InhA，不需要过氧化氢酶过氧化物酶 KatG 的激活。

Taraxerone 是分离自景天的天然产物。它可以增强乙醇脱氢酶和乙醛脱氢酶活性，EC50分别为 512.42 μM 和 500.16 μM。

DL-3-Phenyllactic acid (Standard) 是 DL-3-Phenyllactic acid 的标准品，适用于定量分析、质量控制及生化实验等相关研究。DL-3-Phenyllactic acid (3-Phenyllactic acid) 是广谱抗菌化合物，对细菌和真菌具有活性。

Zineb (Standard) is the standard substance of Zineb, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. Zineb is an agricultural fungicide of the dithiocarbamate class. Zineb did not change the activity of any of the superoxide dismutases. The activity of catalase was reduced only by Zineb.

β-carotene-15,15ʹ-epoxide 是一种具有诱导凋亡和抗肿瘤特性的XIAP拮抗剂，并可从Spondias mombin叶中提取。在DMBA诱导的乳腺癌大鼠模型中，该化合物通过结合抑制凋亡蛋白XIAP的BIR3结构域，阻止其与caspase-9的相互作用，从而诱导肿瘤细胞发生凋亡。此外，β-carotene-15,15ʹ-epoxide 能显著抑制肿瘤组织中BCL-2、COX-2和TNF-α的表达，减少MDA含量，提高catalase活性，并调节血清中LDH、ALP、ALT等生化指标，展现出强效的抗氧化、抗炎及代谢保护功能。此化合物适用于炎症相关疾病及乳腺癌等肿瘤疾病的研究。

Palmitoyl tetrapeptide-20 (PTP20) TFA 是一种仿生肽，也是α-MSH的激动剂。它可以通过提高过氧化氢酶的表达来保护滤泡黑素细胞，并激活黑素生成。

Cerium oxide, 99.99% metals basis, <5 μm 是一种用于生化分析的试剂，具有抗炎特性以及SOD和过氧化氢酶模拟的活性。它可用于治疗慢性炎症，并适用于多种工业应用，如固体氧化物燃料电池、太阳能电池、催化剂、氧气泵和气体传感器。