TAURINE COMPARED TO INHIBITORS OF MYELOPEROXIDASE (MPO) AS PROTECTIVE AGENTS AGAINST LOW DENSITY LIPOPROTEIN MODIFICATION BY ENZYMATICALLY GENERATED HYPOCHLOROUS ACID

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KHARAZI H.; SCHAUR J.

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Paper Information

Journal: Journal of Kermanshah University of Medical Sciences Year:2003 | Volume:7 | Issue:2 Page(s): 1-11

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Title

TAURINE COMPARED TO INHIBITORS OF MYELOPEROXIDASE (MPO) AS PROTECTIVE AGENTS AGAINST LOW DENSITY LIPOPROTEIN MODIFICATION BY ENZYMATICALLY GENERATED HYPOCHLOROUS ACID

Author(s)

KHARAZI H. | SCHAUR J. | Issue Writer Certificate

Keywords

LDLQ4

MPOQ3

TAURINEQ2

PHBAHQ4

HOCLQ4

Abstract

Background & Objective: TAURINE is a sulfur amino acid that protects cells from self-destruction during oxidative processes, such as chlorinated oxidants (hypochlorous acid, HOCL). Our objective was to compare the effects of TAURINE with myeloperoxidase inhibitors (MPO) on the process of HOCL-induced low density lipoprotein (LDL) changes.Materials & Methods: We assessed the serum of some blood donors with normal serum lipid levels. We evaluated 1) blocking the neutrophil function by preventing oxidant production by MPO with 3-amino 1,2,4 triazole, potassium cyanide, sodium azide, P-hydroxy-benzoic acid hydrazide (pHBAH), Salicylhydroxamic acid, and benzohydroxarnic acid; 2) trapping of products of activated neutrophils, such as MPO- derived HOCL by TAURINE , methionine and glycine. Tryptophan destruction in presence of the MPO system was monitored fluorimetrically as a marker of LDL modification.Results: At a TAURINE concentration of 40 pM, which is three orders of magnitude below the physiological value, tmax2 was increased by a factor of 50 compared to the control in absence of TAURINE (20 min versus 0.4 min). P-hydroxy-benzoic acid hydrazide (pHBAH), at a concentration o f 0.3 to 0.75 MM, too, was a potent inhibitor of tryptophan destruction. Discussion: This study suggests a high potential of TAURINE to slow down inflammatory processes by modulating the oxidative burst of neutrophils. TAURINE was the second most potent netralizer of HOCL, after methionine. TAURINE may be used to prevent oxidant damage to neutrophills.

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APA: Copy

KHARAZI, H., & SCHAUR, J.. (2003). TAURINE COMPARED TO INHIBITORS OF MYELOPEROXIDASE (MPO) AS PROTECTIVE AGENTS AGAINST LOW DENSITY LIPOPROTEIN MODIFICATION BY ENZYMATICALLY GENERATED HYPOCHLOROUS ACID. JOURNAL OF KERMANSHAH UNIVERSITY OF MEDICAL SCIENCES (BEHBOOD), 7(2), 1-11. SID. https://sid.ir/paper/20797/en

Vancouver: Copy

KHARAZI H., SCHAUR J.. TAURINE COMPARED TO INHIBITORS OF MYELOPEROXIDASE (MPO) AS PROTECTIVE AGENTS AGAINST LOW DENSITY LIPOPROTEIN MODIFICATION BY ENZYMATICALLY GENERATED HYPOCHLOROUS ACID. JOURNAL OF KERMANSHAH UNIVERSITY OF MEDICAL SCIENCES (BEHBOOD)[Internet]. 2003;7(2):1-11. Available from: https://sid.ir/paper/20797/en

IEEE: Copy

H. KHARAZI, and J. SCHAUR, “TAURINE COMPARED TO INHIBITORS OF MYELOPEROXIDASE (MPO) AS PROTECTIVE AGENTS AGAINST LOW DENSITY LIPOPROTEIN MODIFICATION BY ENZYMATICALLY GENERATED HYPOCHLOROUS ACID,” JOURNAL OF KERMANSHAH UNIVERSITY OF MEDICAL SCIENCES (BEHBOOD), vol. 7, no. 2, pp. 1–11, 2003, [Online]. Available: https://sid.ir/paper/20797/en

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