European journal of obstetrics, gynecology, and reproductive biology · 2001
Neutrophil oxygen radical production in pre-eclampsia with HELLP syndrome.
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Zusterzeel P L, Wanten G J, Peters W H, Merkus H M, Steegers E A
Аннотация
OBJECTIVE: To determine whether severe pre-eclampsia complicated by hemolysis, elevated liver enzymes, low platelets (HELLP) syndrome alters neutrophil oxygen radical production.
MATERIALS AND METHODS: Neutrophils were obtained from 10 healthy non-pregnant, 9 normal pregnant and 9 women with severe pre-eclampsia with concurrently HELLP syndrome. Oxygen radical production was evaluated using luminol-enhanced chemiluminescence and measured by cytochrome C reduction. Furthermore we incubated sera from cases and controls with isolated healthy neutrophils and measured their capacity to generate oxygen radicals.
RESULTS: Unstimulated neutrophil oxygen radical production was significantly lower in severe pre-eclamptics compared with healthy non-pregnant and pregnant subjects, whereas phorbol ester-induced oxygen radical production did not differ among categories. Cytochrome C reduction of unstimulated neutrophils showed similar results. Healthy neutrophils incubated with sera from pre-eclamptics enhanced the oxygen radical production significantly more than neutrophils incubated with sera from the healthy subjects.
CONCLUSIONS: Severe pre-eclampsia is characterised by decreased unstimulated neutrophil oxygen radical production. This may be the result of an exhausted cellular response due to stimulation by a factor present in the serum of these patients.
MATERIALS AND METHODS: Neutrophils were obtained from 10 healthy non-pregnant, 9 normal pregnant and 9 women with severe pre-eclampsia with concurrently HELLP syndrome. Oxygen radical production was evaluated using luminol-enhanced chemiluminescence and measured by cytochrome C reduction. Furthermore we incubated sera from cases and controls with isolated healthy neutrophils and measured their capacity to generate oxygen radicals.
RESULTS: Unstimulated neutrophil oxygen radical production was significantly lower in severe pre-eclamptics compared with healthy non-pregnant and pregnant subjects, whereas phorbol ester-induced oxygen radical production did not differ among categories. Cytochrome C reduction of unstimulated neutrophils showed similar results. Healthy neutrophils incubated with sera from pre-eclamptics enhanced the oxygen radical production significantly more than neutrophils incubated with sera from the healthy subjects.
CONCLUSIONS: Severe pre-eclampsia is characterised by decreased unstimulated neutrophil oxygen radical production. This may be the result of an exhausted cellular response due to stimulation by a factor present in the serum of these patients.