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Payrits M, Sághy É, Mátyus P, Czompa A, Ludmerczki R, Deme R, Sándor Z, Helyes Z, Szőke É. A novel 3-(4,5-diphenyl-1,3-oxazol-2-yl)propanal oxime compound is a potent Transient Receptor Potential Ankyrin 1 and Vanilloid 1 (TRPA1 and V1) receptor antagonist. Neuroscience 2016; 324:151-62. [PMID: 26930003 DOI: 10.1016/j.neuroscience.2016.02.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 02/20/2016] [Accepted: 02/22/2016] [Indexed: 12/20/2022]
Abstract
Transient Receptor Potential Ankyrin 1 and Vanilloid 1 (TRPA1, TRPV1) ion channels expressed on nociceptive primary sensory neurons are important regulators of pain and inflammation. TRPA1 is activated by several inflammatory mediators including formaldehyde and methylglyoxal that are products of the semicarbazide-sensitive amine-oxidase enzyme (SSAO). SZV-1287 is a new 3-(4,5-diphenyl-1,3-oxazol-2-yl)propanal oxime SSAO inhibitor, its chemical structure is similar to other oxime derivatives described as TRPA1 antagonists. Therefore, we investigated its effects on TRPA1 and TRPV1 receptor activation on the cell bodies and peripheral terminals of primary sensory neurons and TRPA1 or TRPV1 receptor-expressing cell lines. Calcium influx in response to the TRPA1 agonist allyl-isothiocyanate (AITC) (200 μM) and the TRPV1 stimulator capsaicin (330 nM) in rat trigeminal neurons or TRPA1 and TRPV1 receptor-expressing cell lines was measured by microfluorimetry or radioactive (45)Ca(2+) uptake experiments. Calcitonin gene-related peptide (CGRP) release as the indicator of 100 μM AITC - or 100 nM capsaicin-induced peripheral sensory nerve terminal activation was measured by radioimmunoassay. SZV-1287 (100, 500 and 1000 nM) exerted a concentration-dependent significant inhibition on both AITC- and capsaicin-evoked calcium influx in trigeminal neurons and TRPA1 or TRPV1 receptor-expressing cell lines. It also significantly inhibited the TRPA1, but not the TRPV1 activation-induced CGRP release from the peripheral sensory nerve endings in a concentration-dependent manner. In contrast, the reference SSAO inhibitor LJP 1207 with a different structure had no effect on TRPA1 or TRPV1 activation in either model system. This is the first evidence that our novel oxime compound SZV-1287 originally developed as a SSAO inhibitor has a potent dual antagonistic action on TRPA1 and TRPV1 ion channels on primary sensory neurons.
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Affiliation(s)
- M Payrits
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Pécs-7624, Szigeti str. 12., Hungary; Szentágothai Research Centre, University of Pécs, Pécs-7624, Ifjúság str. 20., Hungary.
| | - É Sághy
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Pécs-7624, Szigeti str. 12., Hungary; Szentágothai Research Centre, University of Pécs, Pécs-7624, Ifjúság str. 20., Hungary.
| | - P Mátyus
- Department of Organic Chemistry, University of Semmelweis, Budapest-1092, Hőgyes Endre str. 7., Hungary.
| | - A Czompa
- Department of Organic Chemistry, University of Semmelweis, Budapest-1092, Hőgyes Endre str. 7., Hungary.
| | - R Ludmerczki
- Department of Organic Chemistry, University of Semmelweis, Budapest-1092, Hőgyes Endre str. 7., Hungary.
| | - R Deme
- Department of Organic Chemistry, University of Semmelweis, Budapest-1092, Hőgyes Endre str. 7., Hungary.
| | - Z Sándor
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Pécs-7624, Szigeti str. 12., Hungary.
| | - Zs Helyes
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Pécs-7624, Szigeti str. 12., Hungary; Szentágothai Research Centre, University of Pécs, Pécs-7624, Ifjúság str. 20., Hungary; MTA-PTE Chronic Pain Research Group, Pécs-7624, Szigeti str. 12., Hungary.
| | - É Szőke
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Pécs-7624, Szigeti str. 12., Hungary; Szentágothai Research Centre, University of Pécs, Pécs-7624, Ifjúság str. 20., Hungary; MTA-PTE Chronic Pain Research Group, Pécs-7624, Szigeti str. 12., Hungary.
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Arany Á, Bolgár B, Balogh B, Antal P, Mátyus P. Multi-aspect candidates for repositioning: data fusion methods using heterogeneous information sources. Curr Med Chem 2013; 20:95-107. [PMID: 23210850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Revised: 11/16/2012] [Accepted: 11/21/2012] [Indexed: 06/01/2023]
Abstract
Drug repositioning, an innovative therapeutic application of an old drug, has received much attention as a particularly costeffective strategy in drug R&D Recent work has indicated that repositioning can be promoted by utilizing a wide range of information sources, including medicinal chemical, target, mechanism, main and side-effect-related information, and also bibliometric and taxonomical fingerprints, signatures and knowledge bases. This article describes the adaptation of a conceptually novel, more efficient approach for the identification of new possible therapeutic applications of approved drugs and drug candidates, based on a kernel-based data fusion method. This strategy includes (1) the potentially multiple representation of information sources, (2) the automated weighting and statistically optimal combination of information sources, and (3) the automated weighting of parts of the query compounds. The performance was systematically evaluated by using Anatomical Therapeutic Chemical Classification System classes in a cross-validation framework. The results confirmed that kernel-based data fusion can integrate heterogeneous information sources significantly better than standard rank-based fusion can, and this method provides a unique solution for repositioning; it can also be utilized for de novo drug discovery. The advantages of kernel-based data fusion are illustrated with examples and open problems that are particularly relevant for pharmaceutical applications.
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Affiliation(s)
- Á Arany
- Department of Organic Chemistry, University Semmelweis H-1092 Budapest, Hogyes Endre u. 7, Hungary
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Shujaa N, Al-Khrasani M, Zádori ZS, Rossi M, Mátyus P, Németh J, Hein L, Gyires K. α(2)-adrenoceptor agonist-induced inhibition of gastric motor activity is mediated by α(2A)-adrenoceptor subtype in the mouse. Neurochem Int 2011; 58:708-13. [PMID: 21333706 DOI: 10.1016/j.neuint.2011.02.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Revised: 01/31/2011] [Accepted: 02/10/2011] [Indexed: 01/11/2023]
Abstract
The role of α(2)-adrenoceptors in regulation of gastric motility has been well documented. However, only few data are available on the adrenoceptor subtype that mediates this effect. The purpose of the present work was to identify the α(2)-adrenoceptor subtype(s) responsible for the inhibition of gastric motor activity in isolated fundus strip of the mouse. It was shown that (i) the electrically evoked contraction of the gastric fundus strip of the mouse was inhibited by the non-selective α(2)-adrenoceptor stimulant clonidine (EC(50): 0.019±0.001μM), the α(2A)-adrenoceptor subtype selective agonist oxymetazoline (EC(50): 0.004±0.001μM) and the α(2B)-adrenoceptor subtype preferring ST-91 (EC(50): 0.029±0.004μM), (ii) the inhibitory effect of clonidine (1μM), oxymetazoline (0.1μM) and ST-91 (1μM) on the contractions of gastric fundus strip was reversed by the non-selective α(2)-adrenoceptor antagonist idazoxan and α(2A)-adrenoceptor antagonist BRL 44408, but not by the α(2B/2C)-adrenoceptor antagonist ARC-239. (iii) Clonidine and ST-91 inhibited the electrically induced gastric contractions in C57BL/6 wild type mice as well as in α(2B)- and α(2C)-adrenoceptor deficient mice in a concentration-dependent manner; however, neither of them was effective in α(2A)-deficient mice. As a conclusion, it was first demonstrated that the inhibitory effect of α(2)-adrenoceptor agonists on the gastric motor activity of isolated stomach strip of the mouse is mediated purely by α(2A)-adrenoceptors.
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Affiliation(s)
- N Shujaa
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary
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Krajsovszky G, Károlyházy L, Riedl Z, Csámpai A, Dunkel P, Lernyei Á, Dajka-Halász B, Hajós G, Mátyus P. Reaction of chloropyridazin-3(2H)-ones with iodide. Part I. A mechanistic study. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.theochem.2004.08.066] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
Semicarbazide-sensitive amine-oxidase (SSAO) is present in various human tissues and in plasma. Oxidative deamination of short-chain aliphatic amines is catalyzed by this enzyme to afford the corresponding aldehydes, ammonia and hydrogen peroxide. Methylamine and aminoacetone have been recognized to be physiological substrates for SSAO. There are several pathological states where increased serum SSAO activity have been found, such as diabetes mellitus, congestive heart failure, multiple types of cerebral infarction, uraemia, and hepatic cirrhosis. The role of SSAO in pathophysiology of diabetes has been most extensively investigated. The elevated formation of the potentially cytotoxic products of the enzyme may contribute to the endothelial injury of blood vessels, resulting in the early development of severe atherosclerosis; it may also contribute to the pathogenesis of diabetic angiopathy. It is now suggested that SSAO inhibitors may prevent the development of atherosclerosis and diabetic complications as well. Inhibitors can be conveniently subdivided into the main groups of hydrazine derivatives, arylalkylamines, propenyl- and propargylamines, oxazolidinones, and haloalkylamines. Of them, aryl(alkyl)hydrazines, and 3-halo-2-phenylallylamines are generally very strong SSAO inhibitors. Most of these inhibitors of SSAO have been originally developed for other purposes, or they are simple chemical reagents with highly reactive structural element(s); these compounds have not been able to fulfil all criteria of high potency, selectivity, and acceptable toxicity. New potent compounds with selectivity and low toxicity are needed, which may prove useful tools for understanding the roles and function of SSAO, or they may even be valuable substances for treatment of various diseases.
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Affiliation(s)
- P Mátyus
- Department of Organic Chemistry, Semmelweis University, Budapest, Hungary.
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Hajós G, Riedl Z, Timári G, Mátyus P, Maes BUW, Lemière GLF. Synthesis of New Polyfused Heterocycles of Biological Importance by Means of Pd(0) Catalysis. Molecules 2003. [PMCID: PMC6146843 DOI: 10.3390/80600480] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
A general synthetic methodology employing heteroaryl-aryl Suzuki coupling is reviewed, by which 15 heteroaromatic ring systems of biological interest have been prepared.
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Affiliation(s)
- Gy. Hajós
- Institute of Chemistry, Chemical Research Center, Hungarian Academy of Sciences, Pusztaszeri út 59, H-1025 Budapest, Hungary
- Author to whom correspondence should be addressed. E-Mail:
| | - Zs. Riedl
- Institute of Chemistry, Chemical Research Center, Hungarian Academy of Sciences, Pusztaszeri út 59, H-1025 Budapest, Hungary
| | - G. Timári
- Institute of Chemistry, Chemical Research Center, Hungarian Academy of Sciences, Pusztaszeri út 59, H-1025 Budapest, Hungary
| | - P. Mátyus
- Institute of Organic Chemistry, Semmelweis University, H-1092 Budapest, Hőgyes E. u. 7., Hungary
| | - B. U. W. Maes
- Department of Chemistry, University of Antwerp (RUCA), Groenenborgerlaan 171, B-2020, Antwerpen, Belgium
| | - G. L. F. Lemière
- Department of Chemistry, University of Antwerp (RUCA), Groenenborgerlaan 171, B-2020, Antwerpen, Belgium
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Opincariu M, Varró A, Iost N, Virág L, Hála O, Szolnoki J, Szécsi J, Bogáts G, Szenohradszky P, Mátyus P, Papp JG. The cellular electrophysiologic effect of a new amiodarone like antiarrhythmic drug GYKI 16638 in undiseased human ventricular muscle: comparison with sotalol and mexiletine. Curr Med Chem 2002; 9:41-6. [PMID: 11860346 DOI: 10.2174/0929867023371517] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The cellular electrophysiologic effect of GYKI 16638, a new antiarrhythmic compound was studied and compared with that of sotalol and mexiletine in undiseased human right ventricular muscle preparation by applying the conventional microelectrode technique. GYKI 16638 (5 microM), at stimulation cycle length of 1000 ms, lengthened action potential duration (APD(90)) from 338.9 +/- 28.6 ms to 385.4 +/- 24 ms (n = 9, p > 0.05). This APD lengthening effect, unlike that of sotalol (30 microM), was rate-independent. GYKI 16638, contrary to sotalol and like mexiletine (10 microM), exerted a use-dependent depression of the maximal rate of depolarization (V(max)) which amounted to 36.4 +/- 11.7% at cycle length of 400 ms (n = 5, p < 0.05) and was characterised with an offset kinetical time constant of 298.6 +/- 70.2 ms. It was concluded that GYKI 16638 in human ventricular muscle shows combined Class IB and Class III antiarrhythmic properties, resembling the electrophysiological manifestation seen after chronic amiodarone treatment.
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Affiliation(s)
- M Opincariu
- Department of Pharmacology & Pharmacotherapy, Albert Szent-Györgyi Medical and Pharmaceutical Center, University of Szeged, Szeged, Hungary
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Mátyus P. Cardiovascular and related agents. Pharmazie 2001; 56 Suppl 1:S50-5. [PMID: 11686092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Research activities of the Hungarian Institute of Drug Research in the field of cardiovascular agents are reviewed. Many promising drug candidates were found including a compound already marketed. Novel concepts for drug research were developed as well.
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Affiliation(s)
- P Mátyus
- Department of Organic Chemistry, Semmelweis University, Budapest, Hungary
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Jensen SJK, Mátyus P, McAllister MA, Csizmadia IG. A Theoretical Study of the Scavenging of O2- by NO in the Gas Phase and in Condensed Media. J Phys Chem A 2001. [DOI: 10.1021/jp011402b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. J. Knak Jensen
- Department of Chemistry, Langelandsgade 140, Aarhus University, DK-8000 Aarhus C, Denmark, Semmelweis University of Medicine, Institute of Organic Chemistry, H-1092 Budapest, Högyes E. u. 7, Hungary, Department of Chemistry, P.O. Box 5068, University of North Texas, Denton, Texas 76203, and Lash Miller Chemical Laboratories, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - P. Mátyus
- Department of Chemistry, Langelandsgade 140, Aarhus University, DK-8000 Aarhus C, Denmark, Semmelweis University of Medicine, Institute of Organic Chemistry, H-1092 Budapest, Högyes E. u. 7, Hungary, Department of Chemistry, P.O. Box 5068, University of North Texas, Denton, Texas 76203, and Lash Miller Chemical Laboratories, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - M. A. McAllister
- Department of Chemistry, Langelandsgade 140, Aarhus University, DK-8000 Aarhus C, Denmark, Semmelweis University of Medicine, Institute of Organic Chemistry, H-1092 Budapest, Högyes E. u. 7, Hungary, Department of Chemistry, P.O. Box 5068, University of North Texas, Denton, Texas 76203, and Lash Miller Chemical Laboratories, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - I. G. Csizmadia
- Department of Chemistry, Langelandsgade 140, Aarhus University, DK-8000 Aarhus C, Denmark, Semmelweis University of Medicine, Institute of Organic Chemistry, H-1092 Budapest, Högyes E. u. 7, Hungary, Department of Chemistry, P.O. Box 5068, University of North Texas, Denton, Texas 76203, and Lash Miller Chemical Laboratories, 80 St. George Street, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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Abstract
Although the existence of plasma- and tissue-bound semicarbazide-sensitive amine oxidases (SSAOs) has been recognized earlier, the physiological relevance of the enzyme still remains uncertain. Recent data suggest that elevated serum SSAO activity might cause endothelial injury. Formation of cytotoxic metabolites (e.g., formaldehyde) and increased oxidative stress might lead to initiation or progression of atherosclerosis. Significant positive correlation was found between serum SSAO activity and severity of atherosclerosis, and diabetic macrovascular complications. Effective and selective inhibitors of human SSAO might exert cytoprotective effect on endothelial cells. Compounds, having similar structure to mexiletine, were synthesized and studied relating to SSAO activity. The reference substrate was MDL-72974A. Unfortunately, our new compounds did not reach the potency of the reference substance using human serum samples. In conclusion, we suppose that vascular and soluble SSAO enzymes might have different inhibitor sensitivity. Further studies are required to determine whether the soluble or vascular isoform of SSAO will be the main therapeutic target in the future.
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Affiliation(s)
- K. Magyar
- 1Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - Z. Mészáros
- 1Department of Pharmacodynamics, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
| | - P. Mátyus
- 2Department of Organic Chemistry, Faculty of Pharmacy, Semmelweis University, Budapest, Hungary
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Szentesi A, Gergely A, Horváth P, Mahó S, Mátyus P, Szász G. Determination of circular dichroism and ultraviolet spectral parameters of norgestimate- and other Delta(4)-3-ketosteroid oxime isomers via normal phase HPLC method. Curr Med Chem 2001; 8:1341-7. [PMID: 11562270 DOI: 10.2174/0929867013372238] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The oxime formation reaction of therapeutical progestogen (levonorgestrel, levonorgestrel acetate, norethisterone), androgen (methyltestosterone, testosterone phenylpropionate) and anabolic (nortestosterone phenylpropionate) Delta(4)-3-ketosteroids has been investigated. The ketosteroid-hydroxylamine reaction was monitored by reversed phase HPLC system. It was established, that under the experimental conditions applied the oxime formation was complete within 2 h. The reaction leads to the formation of Z and E oxime isomers. The isomers of norgestimate (levonorgestrel 17-acetate oxime) and other Delta(4)-3-ketosteroid oximes have been separated by a new normal phase HPLC method. The identification (elution order assignation) and determination of the formation ratio of the isomers have been performed by 1H NMR spectroscopy on the basis of the chemical shift differences of 4-H signals. The on-line CD and UV spectra of the pure oxime isomers were recorded and then molar ellipticities and absorbances of the isomers were calculated in the wavelength range of 200-300 nm via parameter estimation method.
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Affiliation(s)
- A Szentesi
- Department of Pharmaceutical Chemistry, Semmelweis University, H-1092 Budapest, Budapest, Högyes E. u. 9, Hungary.
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Károlyházy L, Horváth G, Mátyus P. [A novel pyridazino-fused ring system: synthesis of pyridazino[3,4-b]diazepam]. Acta Pharm Hung 2001; 71:168-70. [PMID: 11862664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
As an analogue of pyridazino-fused ring systems with pharmacological activities, the novel pyridazinol[3,4-b][1,5]diazepine ring system was prepared. The synthetic pathway includes three steps from 4 5-(N-benzyl-N-3-hydroxypropyl)amino derivative which is easily available through nucleophilic substitution reaction of the known 4,5-dichloro-2-methyl-6-nitro-3(2H)-pyridazinone (2) with N-benzyl-N-(3-hydroxypropyl)amine. In the first step, compound 4 was treated with thionyl chloride to give the chloropropyl derivative 5. In the second step, a Bechamp reduction was carried out with Fe in acetic acid to obtain the amino compound 6, and finally the ring closure reaction of 6 was performed in N,N-dimethylformamide in the presence of potassium carbonate at 110 degrees C for 40 hours. In this way the bicyclic compound 7 could be isolated in 48% yield.
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Affiliation(s)
- L Károlyházy
- Semmelweis Egyetem, Szerves Vegytani Intézet, 1092 Budapest, Hógyes E. u. 7
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Villa S, Barlocco D, Cignarella G, Papp GJ, Baláti B, Takács J, Varró A, Borosy A, Keserû K, Mátyus P. 3,8-diazabicyclo--[3.2.1]-octane derivatives as analogues of ambasilide, a Class III antiarrhythmic agent. Eur J Med Chem 2001; 36:495-506. [PMID: 11525840 DOI: 10.1016/s0223-5234(01)01246-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Ambasilide, a representative of Class III antiarrhythmics, was reported to prolong the cardiac action potential duration in the dog, with little or no effect on Ca and Na currents. We synthesised a series of ambasilide analogues, having the 3,8-diazabicyclo-[3.2.1]-octane moiety instead of the 3,7-diazabicyclo-[3.3.1]-nonane present in ambasilide. The compounds were tested both in vitro extracellular electrophysiological assays and by the conventional microelectrode technique. Most of them lengthened the effective refractory period (ERP) with no change or slight increase on the impulse conduction time (ICT). Similarly some of the tested compounds lengthened the action potential duration (APD), a typical Class III feature, without exerting any significant effect on the maximal rate of depolarization, therefore apparently lacking Class I antiarrhythmic activity.
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Affiliation(s)
- S Villa
- Istituto di Chimica Farmaceutica, Universitá di Milano, Viale Abruzzi 42, 20131, Milan, Italy
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Mátyus P. [Cardiovascular system research at the Institute of Drug Research]. Acta Pharm Hung 2001; 71:67-72. [PMID: 11769098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Abstract
The most significant achievements in the cardiovascular research areas have been reviewed. Among the beta-adrenoceptor blockers, antihypertensive, positive inotropic, and antiarrhythmic compounds synthesized and investigated at the IDR, a number of new drug candidates have been found and studied in clinical phases. One compound has been marketed (Tobanum, beta-adrenoceptor blocker).
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Affiliation(s)
- P Mátyus
- Semmelweis Egyetem, Szerves Vegytani Intézet, Budapest, Hógyes E. u. 7, H-1092
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Baczkó I, El-Reyani NE, Farkas A, Virág L, Iost N, Leprán I, Mátyus P, Varró A, Papp JG. Antiarrhythmic and electrophysiological effects of GYKI-16638, a novel N-(phenoxyalkyl)-N-phenylalkylamine, in rabbits. Eur J Pharmacol 2000; 404:181-90. [PMID: 10980278 DOI: 10.1016/s0014-2999(00)00591-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The effect of N-[4-[2-N-methyl-N-[1-methyl-2-(2, 6-dimethylphenoxy)ethylamino]-ethyl]-phenyl]-methanesulfonamide. hydrochloride (GYKI-16638; 0.03 and 0.1 mg/kg, i.v.), a novel antiarrhythmic compound, was assessed and compared to that of D-sotalol (1 and 3 mg/kg, i.v.) on arrhythmias induced by 10 min of coronary artery occlusion and 10 min of reperfusion in anaesthetized rabbits. Also, its cellular electrophysiological effects were studied in rabbit right ventricular papillary muscle preparations and in rabbit single isolated ventricular myocytes. In anaesthetized rabbits, intravenous administration of 0.03 and 0.1 mg/kg GYKI-16638 and 1 and 3 mg/kg D-sotalol significantly increased survival during reperfusion (GYKI-16638: 82% and 77%, D-sotalol: 75% and 83% vs. 18% in controls, P<0.05, respectively). GYKI-16638 (0.1 mg/kg) significantly increased the number of animals that did not develop arrhythmias during reperfusion (46% vs. 0% in controls, P<0.05). In isolated rabbit right ventricular papillary muscle, 2 microM GYKI-16638, at 1 Hz stimulation frequency, lengthened the action potential duration at 50% and 90% repolarization (APD(50-90)) without influencing the resting membrane potential and action potential amplitude (APA). It decreased the maximal rate of depolarization (V(max)) in a use-dependent manner. This effect was statistically significant only at stimulation cycle lengths shorter than 700 ms. The offset kinetics of this V(max) block were relatively rapid, the corresponding time constant for recovery of V(max) was 328.2+/-65.0 ms. In patch-clamp experiments, performed in rabbit ventricular myocytes, 2 microM GYKI-16638 markedly depressed the rapid component of the delayed rectifier outward and moderately decreased the inward rectifier K(+) current without significantly altering the slow component of the delayed rectifier and transient outward K(+) currents. These results suggest that in rabbits, GYKI-16638 has an in vivo antiarrhythmic effect, comparable to that of D-sotalol, which can be best explained by its combined Class I/B and Class III actions.
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Affiliation(s)
- I Baczkó
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Szeged and Research Unit of the Hungarian Academy of Sciences, Dóm tér 12, P.O. Box 427, H-6701, Szeged, Hungary
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Schwartz A, Beke G, Kovári Z, Böcskey Z, Farkas Ö, Mátyus P. Applications of tert -amino effect and a nitrone–olefin 1,3-dipolar cycloaddition reaction: synthesis of novel angularly annelated diazino heterocycles. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0166-1280(99)00399-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Abstract
Synthesis and biological evaluation of novel phenoxyalkyl amines exhibiting both class Ib and class III type electrophysiological properties are described. Two compounds showed excellent antiarrhythmic effects against reperfusion induced arrhythmias.
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Affiliation(s)
- P Mátyus
- Institute of Organic Chemistry, Semmelweis University, Budapest, H-1092, Högyes u. 7, Hungary.
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18
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19
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Abstract
Methodology and application of artificial neural networks in structure-activity relationships are reviewed focusing on the most frequently used three-layer feedforward back-propagation procedure. Two applications of neural networks are presented and a comparison of the performance with those of CoMFA and a classical QSAR analysis is also discussed.
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Affiliation(s)
- I Kövesdi
- EGIS Pharmaceuticals Ltd., Budapest, Hungary
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20
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Abstract
Several 4,5-disubstituted 3(2H)-pyridazinone derivatives containing 2-hydroxymethylpyrrolidino moiety as a chiral building block were synthetized. Separation of enantiomers was carried out by chiral HPLC on Chiralcel OJ and OF columns. Mobile phases consisted of hexane, ethanol and 2-propanol. Chiralcel OJ column was capable of separating most of the enantiomeric pairs. For one type of compound. Chiralcel OF column was used for separation.
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21
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22
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Pankucsi C, Magyar J, Bányász T, Mátyus P, Nánási PP. Novel antiarrhythmic agents with combined mode of action. IDrugs 1998; 1:554-560. [PMID: 18465595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
In spite of the accelerated evolution in antiarrhythmic drug research and design, the ideal antiarrhythmic compound has not yet emerged. Pure class III agents have not been clinically successful, mainly due to their torsadogenic side-effects. Combination of class III effect with class I, II or IV effects has given better therapeutic results, whilst combination of the various antiarrhythmic mechanisms within one molecule, rather than combination of drugs, seems to be an even more promising strategy. In this study, we briefly review the most frequently applied antiarrhythmic combinations, focusing primarily to those novel antiarrhythmics where class III effects are combined with class IV or class I actions within the same single molecule.
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Affiliation(s)
- C Pankucsi
- Department of Physiology, University Medical School of Debrecen, Debrecen, H-4012 PO BOX 22, Hungary
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23
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Mátyus P, Borosy AP. [Three dimensional structure-activity relationships]. Acta Pharm Hung 1998; 68:33-8. [PMID: 9528147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Among the indirect drug design approaches, the 3D QSAR methods have been of great importance. They now belong to the most attractive and effective modelling tools of modern drug research. In this review, three major topics will be covered. The first focuses on the conformational analysis, in the second part the DIstance COmparison (DISCO) strategy will be discussed, and in the last part the philosophy of the Comparative Molecular Field Analysis (CoMFA) will be briefly described and illustrated.
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Affiliation(s)
- P Mátyus
- Semmelweis Orvostudományi Egyetem, Szerves Vegytani Intézet, Budapest
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24
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Affiliation(s)
- P Mátyus
- Semmelweis University of Medicine, Institute of Organic Chemistry, Budapest, Hungary
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25
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Mátyus P, Varga I, Zára E, Mezei A, Behr Á, Simay A, Haider N, Boros S, Bakonyi A, Horváth E, Horváth K. Novel pyridazino[4,5-b][1,5]oxazepines and -thiazepines as 5-HT1A receptor ligands. Bioorg Med Chem Lett 1997. [DOI: 10.1016/s0960-894x(97)10089-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Affiliation(s)
- P Mátyus
- Institute for Drug Research, Budapest, Hungary
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27
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Harrison PW, Barlin GB, Davies LP, Ireland SJ, Mátyus P, Wong MG. Syntheses, pharmacological evaluation and molecular modelling of substituted 6-alkoxyimidazo[1,2-b]pyridazines as new ligands for the benzodiazepine receptor. Eur J Med Chem 1996. [DOI: 10.1016/0223-5234(96)85873-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Mátyus P, Kasztreiner E, Diesler E, Behr A, Varga I, Kosáry J, Rabloczky G, Jaszlits L. Synthesis and hypotensive activity of some heterocyclic analogues of GYKI-12 743. Arch Pharm (Weinheim) 1994; 327:543-6. [PMID: 7979923 DOI: 10.1002/ardp.19943270902] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
[1,4]Benzodioxanylmethyl-, [1,4]benzodioxanylmethylaminopropyl- and phenoxyethylaminoethyl-substituted lactams were synthesised and their hypotensive activity was investigated. Some of these compounds show moderate to high hypotensive effect, but they had more toxic and/or side effects than GYKI-12 743.
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Affiliation(s)
- P Mátyus
- Institute for Drug Research, Budapest, Hungary
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29
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Mátyus P, Kosáry J, Kasztreiner E, Makk N, Diesler E, Czakó K, Rabloczky G, Jaszlits L, Horváth E, Tömösközi Z, Cseh G, Horváth E, Arányi P. Synthesis, antihypertensive and α-adrenoceptor activity of novel 2-aminoalkyl-3(2H)-pyridazinones. Eur J Med Chem 1992. [DOI: 10.1016/0223-5234(92)90098-l] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Kasztreiner E, Rabloczky G, Makk N, Mátyus P, Diesler E, Tegdes A, Kosáry J, Czakó K, Gyürki S, Cseh G, Kürthy M, Jaszlits L. Synthesis and positive inotropic activity of novel pyrimido-[5,4-b][1,4]oxazin-7(8H)-ones. Eur J Med Chem 1990. [DOI: 10.1016/0223-5234(90)90117-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kosáry J, Szilágyi G, Mátyus P, Czakó K, Kasztreiner E. [Potential CNS depressing agents containing a pyridazine ring. Studies in the field of compounds containing a pyridazine ring (1)]. Acta Pharm Hung 1983; 53:106-14. [PMID: 6880763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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33
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Huszti Z, Szilágyi G, Mátyus P, Kasztreiner E. Influence on turnover and level of hypothalamic noradrenaline by a new antihypertensive agent (GYKI 11679). J Neurochem 1981; 37:1272-81. [PMID: 6117605 DOI: 10.1111/j.1471-4159.1981.tb04678.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In an attempt to delineate the possible importance of the concentration of noradrenaline at hypothalamic noradrenergic receptor sites in a hypotensive response to a drug, the action of a new antihypertensive agent, 1-(6-morpholino-3-pyridazynyl)-2-(1-[tert-butoxycarbonyl]-2-propylidene)-diazane (GYKI 11679), on the turnover rate and the endogenous level of noradrenaline (NA) in rat hypothalamus was examined. An effective, antihypertensive i.p. dose of the compound (10 mg/kg) produced a significant but relatively short-lasting reduction in the hypothalamic noradrenaline content, whereas no change was observed in the cardiac catecholamine level. The NA turnover determinations, carried out in GYKI 11679-pretreated rats by measuring the disappearance of labeled NA at 1, 2, 3, and 5 h after the injection of the radioactive amine, showed that a 10 mg/kg i.p. dose of the compound, given 1 h prior to the i.c.v. administration of the labeled NA, increased the turnover rate of noradrenaline to a great extent. The estimated half-lives of NA in the hypothalamus of the treated and of the non-treated animals were calculated as 1.72 and 3.62 h, respectively. In vitro studies showed that the spontaneous outflow of noradrenaline from hypothalamic slices was accelerated by GYKI 11679 in a dose-dependent manner in a concentration range of 10(-5) to 10(-7) M. In a 10-fold higher range, GYKI 11679 produced inhibition of both the hypothalamic and the adrenal tyrosine hydroxylase activity but did not alter DOPA-decarboxylase, dopamine-beta-hydroxylase, or monoamine oxidase activities. Direct in vivo measurements of catecholamine synthesis by determining the 3H-catecholamines (CA) formed from [3H]tyrosine in the hypothalamus after an i.c.v. administration of the labeled precursor showed a moderate increase in [3H]CA formation following a 10 mg/kg dose of the compound. When GYKI 11679 was administered in a 75 mg/kg i.p. dose to rats, the transformation was reduced by approximately 50%. Adenylate cyclase activity measurements did not show stimulatory or inhibitory actions of the drug on the NA-stimulated adenylate cyclase of the rat hypothalamus, in accordance with previous results. This suggests that the increased NA turnover (utilization) caused by an effective, antihypertensive dose of GYKI 11679 is the direct consequence of an increased outflow, which occurs primarily in the hypothalamus. The increased activity of the noradrenergic neurons in this brain region might lead to a reduced sympathetic activity in the periphery and thus to a significant decrease in blood pressure.
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Mátyus P, Schäfer I, Szondy E. [The diuretic effect of imidazo(1,2-a)pyridines]. Acta Pharm Hung 1979; 49:234-40. [PMID: 532667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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