更新于：2024-12-09
Gliquidone
格列喹酮
更新于：2024-12-09
概要
基本信息
非在研机构- |
最高研发阶段批准上市 |
首次获批日期 中国 (1994-01-01), |
最高研发阶段(中国)批准上市 |
特殊审评- |
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结构
分子式C27H33N3O6S |
InChIKeyLLJFMFZYVVLQKT-UHFFFAOYSA-N |
CAS号33342-05-1 |
关联
13
项与 格列喹酮 相关的临床试验格列喹酮片在健康受试者中进行的单中心、单剂量、空腹和餐后用药、2制剂、2周期、2序列、开放、随机、交叉的生物等效性试验。
格列喹酮片随机、开放、两制剂、两周期、交叉、餐后给药健康人体生物等效性试验
格列喹酮片随机、开放、两制剂、两周期、交叉、空腹及餐后给药健康人体生物等效性试验
100 项与 格列喹酮 相关的临床结果
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100 项与 格列喹酮 相关的转化医学
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100 项与 格列喹酮 相关的专利（医药）
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169
项与 格列喹酮 相关的文献（医药）2024-03-01Molecular pharmacology
Inhibition of Cardiac Kv4.3/KChIP2 Channels by Sulfonylurea Drug Gliquidone
Article
作者: Hu, Fang ; Li, Qinqin ; Wang, KeWei ; Yang, Chenxia ; Liu, Yani
The Kv4.3 channel features fast N-type inactivation and also undergoes a slow C-type inactivation. The gain-of-function mutations of Kv4.3 channels cause an inherited disease called Brugada syndrome (BrS), characterized by a shortened duration of cardiac action potential repolarization and ventricular arrhythmia. The sulfonylurea drug gliquidone, an ATP-dependent K+ channel antagonist, is widely used for the treatment of type 2 diabetes. Here, we report a novel role of gliquidone in inhibiting Kv4.3 and Kv4.3/KChIP2 channels that encode the cardiac transient outward K+ currents responsible for the initial phase of action potential repolarization. Gliquidone results in concentration-dependent inhibition of both Kv4.3 and Kv4.3/KChIP2 fast or steady-state inactivation currents with an IC50 of approximately 8 μM. Gliquidone also accelerates Kv4.3 channel inactivation and shifts the steady-state activation to a more depolarizing direction. Site-directed mutagenesis and molecular docking reveal that the residues S301 in the S4 and Y312A and L321A in the S4-S5 linker are critical for gliquidone-mediated inhibition of Kv4.3 currents, as mutating those residues to alanine significantly reduces the potency for gliquidone-mediated inhibition. Furthermore, gliquidone also inhibits a gain-of-function Kv4.3 V392I mutant identified in BrS patients in voltage- and concentration-dependent manner. Taken together, our findings demonstrate that gliquidone inhibits Kv4.3 channels by acting on the residues in the S4 and the S4-S5 linker. Therefore, gliquidone may hold repurposing potential for the therapy of Brugada syndrome. SIGNIFICANCE STATEMENT: We describe a novel role of gliquidone in inhibiting cardiac Kv4.3 currents and the channel gain-of-function mutation identified from patients with Brugada syndrome, suggesting its repurposing potential for therapy for the heart disease.
2024-02-01Biotechnology and applied biochemistry
Purification and characterization of thioredoxin reductase enzyme from commercial Spirulina platensis tablets by affinity chromatography and investigation of the effects of some chemicals and drugs on enzyme activity
Article
作者: Dagsuyu, Eda ; Yanardag, Refiye
Abstract:
Thioredoxin reductase (TrxR, enzyme code [E.C.] 1.6.4.5) is a widely distributed flavoenzyme that catalyzes nicotinamide adenine dinucleotide phosphate (NADPH)‐dependent reduction of thioredoxin and many other physiologically important substrates. Spirulina platensis is a blue–green algae that is often used as a dietary supplement. S. platensis is rich in protein, lipid, polysaccharide, pigment, carotenoid, enzyme, vitamins and many other chemicals and exhibits a variety of pharmacological functions. In the present study, a simple and efficient method to purify TrxR from S. platensis tablets is reported. The extractions were carried out using two different methods: heat denaturation and 2′,5′‐adenosine diphosphate Sepharose 4B affinity chromatography. The enzyme was purified by 415.04‐fold over the crude extract, with a 19% yield, and specific activity of 0.7640 U/mg protein. Optimum pH, temperature and ionic strength of the enzyme activity, as well as the Michaelis constant (Km) and maximum velocity of enzyme (Vmax) values for NADPH and 5,5′‐dithiobis(2‐nitrobenzoic acid) were determined. Tested metal ions, vitamins, and drugs showed inhibition effects, except Se4+ ion, cefazolin sodium, teicoplanin, and tobramycin that increased the enzyme activity in vitro. Ag+, Cu2+, Mg2+, Ni2+, Pb2+, Zn2+, Al3+, Cr3+, Fe3+, and V4+ ions; vitamin B3, vitamin B6, vitamin C, and vitamin U and aciclovir, azithromycin, benzyladenine, ceftriaxone sodium, clarithromycin, diclofenac, gibberellic acid, glurenorm, indole‐3‐butyric acid, ketorolac, metformin, mupirocin, mupirocin calcium, paracetamol, and tenofovir had inhibitory effects on TrxR. Ag+ exhibited stronger inhibition than 1‐chloro‐2,4‐dinitrobenzene (a positive control).
2023-09-01Genomics & informatics
M Protein from Dengue virus oligomerizes to pentameric channel protein: in silico analysis study.
Article
作者: Zeba, Ayesha ; Ganjiwale, Anjali ; Sekar, Kanagaraj
The Dengue virus M protein is a 75 amino acid polypeptide with two helical transmembranes (TM). The TM domain oligomerizes to form an ion channel, facilitating viral release from the host cells. The M protein has a critical role in the virus entry and life cycle, making it a potent drug target. The oligomerization of the monomeric protein was studied using ab initio modeling and molecular dynamics (MD) simulation in an implicit membrane environment. The representative structures obtained showed pentamer as the most stable oligomeric state, resembling an ion channel. Glutamic acid, threonine, serine, tryptophan, alanine, isoleucine form the pore-lining residues of the pentameric channel, conferring an overall negative charge to the channel with approximate length of 51.9 Å. Residue interaction analysis (RIN) for M protein shows that Ala94, Leu95, Ser112, Glu124, and Phe155 are the central hub residues representing the physicochemical interactions between domains. The virtual screening with 165 different ion channel inhibitors from the ion channel library shows monovalent ion channel blockers, namely lumacaftor, glipizide, gliquidone, glisoxepide, and azelnidipine to be the inhibitors with high docking scores. Understanding the three-dimensional structure of M protein will help design therapeutics and vaccines for Dengue infection.
100 项与 格列喹酮 相关的药物交易
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研发状态
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| 适应症 | 国家/地区 | 公司 | 日期 |
|---|---|---|---|
| 2型糖尿病 | 中国 | 1994-01-01 |
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