Antibiotics Used in Patients after Surgery and Effects of Human Serum Paraoxonase-I (PON1) Enzyme Activity

Author(s): Aycan Yılmaz, Esra Dilek*.

Journal Name: Protein & Peptide Letters

Volume 26 , Issue 3 , 2019

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Graphical Abstract:


Background: Paraoxonase (PON; arilesterase, [EC]) is an enzyme from the group arilesterases (ARE). This enzyme is capable of hydrolyzing paraoxone which is the active metabolite of parathion, an organic phosphorus insecticide. PON activity was found to be low in individuals prone to development of atherosclerosis such as diabetes, familial hypercholesterolemia and kidney disorders. It was noted that PON enzyme activity decreases in relation to age increase in adults. PON enzyme activity is approximately half of that in newborns and premature babies. Approximately one year after birth, it reaches the adult level. It can be said that PON1 has significant role on living organisms. For this reason, many studies on interactions of PON-drugs are needed.

Objective: In this article, our aim is to investigate in vitro effects of four pharmaceutically active agents (fosfomycin, cefuroxime axetil, cefaclor monohydrate, and cefixime) which are often used in patients after surgery on human serum paraoxanase-I (PON1) enzyme activity.

Methods: In this article, we purify paraoxonase-I enzyme from human serum by using ammonium sulfate precipitation (in the range of 60-80%), ion exchange and gel filtration chromatography. We use electrophoresis to check the purity of the enzyme. We investigate the paraoxonase activity of the enzyme at 412 nm the inhibition effects of the active substances. Paraoxone is used as the substrate. Activity measurements arw made at different inhibitor concentrations related to inhibitor studies and % Activity- [I] graphs are drawn for drug active substances. Lineweaver-Burk graphics are used to determine the Ki constants. Finally, to determine the types of inhibition we interpret these graphs.

Results: The active agents used after surgery decreased the PON1 enzyme activity. They showed different inhibition mechanism. The inhibition mechanism of fosfomycin and cefaclor monohydrate was noncompetitive, cefixime was uncompetitive and cefuroxime axetil was a competitive inhibitor. The IC50 values for fosfomycin, cefuroxime axetil, cefaclor monohydrate, and cefixime were calculated to be 31.5 mM, 1.03 mM, 4.18 mM and 0.781 mM, respectively, and the Ki constants were determined to be 27.98 ± 12.25 mM, 2.20 ± 0.22 mM, 4.81 ± 2.25 mM and 1.12 ± 0.32 mM, respectively. The IC50 and Ki values showed that cefixime active agent has the maximum inhibition.

Conclusion: In this study, we have detected that cefuroxime axetil inhibited competitively in vitro paraoxonase activity of this enzyme. According to this information, we thought that cefuroxime axetil linked to the active site of the enzyme. Fosfomycin and cefaclor monohydrate can be attached with amino acids out of the active site of the enzyme because they inhibit enzyme noncompetitively. Cefixime can be attached only to the enzyme-substrate complex because it inhibits enzyme uncompetitively.

Keywords: Paraoxonase1, inhibition, fosfomycin, cefuroxime axetil, cefaclor monohydrate, cefixime.

Durrington, P.N.; Mackness, B.; Mackness, M.J. Paraoxonase and atherosclerosis. Arter. Thromb. Vasc. Biol, 2001, 21(4), 473-480.
Ng, C.J.; Wadleigh, D.J.; Gangopadhyay, A.; Hama, S.; Grijalva, V.R.; Navab, M.; Reddy, S.T. Paraoxonase-2 is a ubiquitously expressed protein with antioxidant properties and is capable of preventing cell-mediated oxidative modification of low density lipoprotein. J. Biol. Chem., 2001, 276(48), 44444-44449.
Canales, A.; Sanchez-Muniz, F.J. Paraoxonase, something more than an enzyme? Med. Clin., 2003, 121(14), 537-548.
Blatter, M.C.; James, R.W.; Messmer, S.; Barja, F.; Pometta, D. Identification of a distinct human high‐density lipoprotein subspecies defined by a lipoprotein‐associated protein, K‐45: Identity of K‐45 with paraoxonase. Eur. J. Biochem., 1993, 211(3), 871-879.
Gan, K.N.; Smolen, A.; Eckerson, H.W.; La Du, B.N. Purification of human serum paraoxonase / arylesterase. Evidence for one esterase catalyzing both activities. Drug Metab. Dispos., 1991, 19(1), 100-106.
Aviram, M.; Rosenblat, M.; Bisgaier, C.L.; Newton, R.S.; Primo-Parmo, S.L.; La Du, B.N. Paraoxonase inhibits high-density lipoprotein oxidation and preserves its functions. A possible peroxidative role for paraoxonase. J. Clin. Invest., 1998, 101(8), 1581-1590.
Mackness, M.; Mackness, B. Paraoxonase 1 and atherosclerosis: Is the gene or the protein more important? Free Radic. Biol. Med., 2004, 37(9), 1317-1323.
Seres, I.; Paragh, G.; Deschene, E.; Fulop Jr, T.; Khalil, A. Study of factors influencing the decreased HDL associated PON1 activity with aging. Exp. Gerontol., 2004, 39(1), 59-66.
Mackness, B.; Durrington, P.N.; Mackness, M.I. Human serum paraoxonase. Gen. Pharmacol., 1998, 31(3), 329-336.
Dilek, E.B.; Küfrevioğlu, Ö.İ.; Beydemir, Ş. Impacts of some antibiotics on human serum paraoxonase 1 activity. J. Enzyme Inhib. Med. Chem., 2013, 28(4), 758-764.
Dilek, E.; Caglar, S. Effects of mono and dinuclear copper (II) complexes derived from non-steroidal anti-inflammatory drug naproxen on human serum paraoxanase1 (PON1) activity. Intl. J. Pharm. Chem, 2015, 5(6), 189-195.
Dilek, E.; Polat, M.F. In vitro inhibition of three different drugs used in rheumatoid arthritis treatment on human serum paraoxanase 1 enzyme activity. Protein Pept. Lett., 2016, 23(1), 3-8.
Caglar, S.; Dilek, E. HamamciAlisir, S.; Caglar, B. New copper(II) complexes including pyridine-2,5dicarboxylic acid: Synthesis, spectroscopic, thermal properties, crystal structure and how these complexes interact with purified PON 1 enzyme. J. Coord. Chem., 2016, 69(16), 2482-2492.
Dilek, E.; Caglar, S.; Erdogan, K.; Caglar, B.; Sahin, O. Synthesis and characterization of four novel palladium (II) and platinum (II) complexes with 1‐(2‐aminoethyl) pyrrolidine, diclofenac and mefenamic acid: In vitro effect of these complexes on human serum paraoxanase1 activity. J. Biochem. Mol. Toxicol., 2018, 32(4), e22043.
Mackness, M.I.; Durrington, P.N. HDL, its enzymes and its potential to influence lipid peroxidation. Atherosclerosis, 1995, 115(2), 243-253.
Lineweaver, H.; Burk, D. The determination of enzyme dissociation constants. J. Am. Chem. Soc., 1934, 56, 658-666.
Bradford, M.M. A rapid and sensitive method for the quantitation of microgram quantities of protein utilizing the principle of protein-dye binding. Anal. Biochem., 1976, 72(1-2), 248-254.
Lehninger, A.L.; Nelson, D.L.; Cox, M.M. Lehninger principles of biochemistry; WH Freeman & Co: New York, USA, 2005, Vol. 4, p. 1100.
Segel, I.H. Enzyme Kinetics; John Wiley and Sons: New York, USA, 1975.
Beydemir, S.; Demir, Y. Antiepileptic drugs: Impacts on human serum paraoxonase-1. J. Biochem. Mol. Toxicol., 2017, 31, e21889.
Alim, Z.; Kilic, D.; Koksal, Z.; Beydemir, S.; Ozdemir, H. Assessment of the inhibitory effects and molecular docking of some sulfonamides on human serum paraoxonase 1. J. Biochem. Mol. Toxicol., 2017, 31, e21950.
Türkeş, C.; Söyüt, H.; Beydemir, Ş. Human serum paraoxonase1 (hPON1): İn vitro inhibition effects of moxifloxacin hydrochloride, levofloxacin hemihidrate, cefepime hydrochloride, cefotaxime sodium and ceftizoxime sodium. J. Enzyme Inhib. Med. Chem., 2015, 30(4), 622-628.
Josse, D.; Lockridge, O.; Xie, W.; Bartels, C.F.; Schopfer, L.M.; Mason, P. The active site of human Paraoxonase (PON1). J. Appl. Toxicol., 2001, 21, 7-11.

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Article Details

Year: 2019
Page: [215 - 220]
Pages: 6
DOI: 10.2174/0929866526666190124144622
Price: $65

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