标签归档：替芬

Ketotifen (Synonyms: 酮替芬; HC 20-511)

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Ketotifen  (Synonyms: 酮替芬; HC 20-511)

Ketotifen (HC 20-511) 是一种具有口服活性的第二代非竞争性组胺 1 (H1) 受体阻滞剂和肥大细胞稳定剂。Ketotifen 可在体外阻断 6-磷酸葡萄糖酸脱氢酶 (6-PGD)。Ketotifen 还对 SARS-CoV-2 和流感病毒 (Influenza virus) 具有抗病毒活性。Ketotifen 可用于自身免疫性脑脊髓炎 (EAE) 和预防哮喘发作的研究。

Ketotifen (Synonyms: 酮替芬; HC 20-511)

Ketotifen Chemical Structure

CAS No. : 34580-13-7

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Ketotifen 的其他形式现货产品:

Ketotifen fumarate

Ketotifen 相关产品

•同靶点产品:

•同靶点蛋白产品:

生物活性

Ketotifen (HC 20-511) is an orally active second-generation noncompetitive histamine 1 (H1) receptor blocker and mast cell stabilizer. Ketotifen can block 6-phosphogluconate dehydrogenase (PGD) in vitro. Ketotifen also has antiviral activity against SARS-CoV-2 and Influenza virus. Ketotifen can be used to the research of autoimmune encephalomyelitis (EAE) and asthma attack prevention[1][2][3][4].

IC50 & Target

H1 Receptor

 

体外研究
(In Vitro)

Ketotifen (0-100 μM; 2 or 4 days) inhibits SARS-CoV-2 with an EC50 of 48.9 μM; and increases the percentage inhibition of SARS-CoV-2 to 79%, 83% and 93% when co-administers with 25, 50 and 100 μM Indomethacin, respectively[3].
Ketotifen (0-50 μM; 24 h) has inhibitory activity against PR8, pH1N1 and H3N2 with EC50s of 5.9 μM, 33.7 μM and 48.5 μM, respectively; and exhibits relatively low cytotoxicity in MDCK cells (EC50=291 μM)[4].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

Ketotifen 相关抗体:
体内研究
(In Vivo)

Ketotifen (80 mg/kg; i.g.; daily for 3 days) reduces end organ damage and mortality in mice infected with influenza virus[4].
Ketotifen (0.4 mg/kg; i.p.; daily for 10 days) reduces encephalomyelitis (EAE) prevalence and severity[5].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Female C57BL/6 mice (4-6 weeks; intranasal infection with 1×103 TCID50 of PR8 in 30 μL of DMEM)[4]
Dosage: 80 mg/kg
Administration: i.g.; daily for 3 days
Result: Reduced end organ damage and mortality in infected mice.
Animal Model: Female C57BL/6 mice (5-6 weeks old; subcutaneously immunized with 150 μg of MOG35-55 peptide containing 4 mg/mL of Mycobacterium tuberculosis)[5]
Dosage: 0.4 mg/kg
Administration: i.p.; daily for 10 days (from the 7th day of infection)
Result: Reduced EAE prevalence and severity; reduced oxidative stress status and inflammasome activation at the CNS; reduced the amount of T cells, especially Th1, in the CNS; downregulated local mRNA expression for mast cell enzymes and preserves blood-CNS barrier permeability; triggered lymphocyte accumulation in draining lymph nodes.

Clinical Trial

分子量

309.43

Formula

C19H19NOS
CAS 号

34580-13-7
中文名称

酮替芬
结构分类
  • Others
初始来源
  • 内源性代谢物
运输条件

Room temperature in continental US; may vary elsewhere.
储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.
纯度 & 产品资料
Data Sheet (544 KB) 产品使用指南 (1538 KB)

参考文献

  • [1]. Klooker TK, et al. The mast cell stabiliser ketotifen decreases visceral hypersensitivity and improves intestinal symptoms in patients with irritable bowel syndrome. Gut. 2010 Sep;59(9):1213-21.  [Content Brief]

    [2]. Zhang H, et al. Advances in the discovery of exosome inhibitors in cancer. J Enzyme Inhib Med Chem. 2020;35(1):1322-1330.  [Content Brief]

    [3]. Kiani P, et al. In Vitro Assessment of the Antiviral Activity of Ketotifen, Indomethacin and Naproxen, Alone and in Combination, against SARS-CoV-2. Viruses. 2021 Mar 26;13(4):558.  [Content Brief]

    [4]. Enkirch T, et al. Identification and in vivo Efficacy Assessment of Approved Orally Bioavailable Human Host Protein-Targeting Drugs With Broad Anti-influenza A Activity. Front Immunol. 2019 Jun 5;10:1097.  [Content Brief]

    [5]. Pinke KH, et al. Calming Down Mast Cells with Ketotifen: A Potential Strategy for Multiple Sclerosis Therapy? Neurotherapeutics. 2020 Jan;17(1):218-234.  [Content Brief]

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