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Oxidative metabolism of neutrophils in acute coronary syndrome.
Cardiovascular Journal of Africa 2023 July 26
BACKGROUND: Inflammation in acute coronary syndrome (ACS) involves neutrophil activation and oxidative stress. Here, we studied the production of reactive oxygen species (ROS) by neutrophils in ACS.
METHODS: The study included 42 patients, men and women aged 46-91 years with ischaemic heart disease (IHD), non-ST-segment elevation ACS and ST-segment elevation ACS. Neutrophil-derived ROS were quantified with double-step stimulated luminol-enhanced chemiluminometry.
RESULTS: The specific indices of spontaneous and double-step stimulated chemiluminescence did not differ in the subgroups of IHD, non-ST-segment elevation ACS and ST-segment elevation ACS. The total double-step stimulated ROS production by neutrophils was significantly higher in ST-segment elevation ACS than in non-ST-segment elevation ACS and IHD.
CONCLUSIONS: In ACS, special activation mechanisms of peripherical neutrophils were not triggered in our study. The significant increase in free radical production by neutrophils in acute myocardial infarction was presumably a consequence of an increase in their number.
METHODS: The study included 42 patients, men and women aged 46-91 years with ischaemic heart disease (IHD), non-ST-segment elevation ACS and ST-segment elevation ACS. Neutrophil-derived ROS were quantified with double-step stimulated luminol-enhanced chemiluminometry.
RESULTS: The specific indices of spontaneous and double-step stimulated chemiluminescence did not differ in the subgroups of IHD, non-ST-segment elevation ACS and ST-segment elevation ACS. The total double-step stimulated ROS production by neutrophils was significantly higher in ST-segment elevation ACS than in non-ST-segment elevation ACS and IHD.
CONCLUSIONS: In ACS, special activation mechanisms of peripherical neutrophils were not triggered in our study. The significant increase in free radical production by neutrophils in acute myocardial infarction was presumably a consequence of an increase in their number.
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