Neutrophil-derived reactive oxygen species can modulate neutrophil adhesion to endothelial cells in preeclampsia.

Neutrophil-derived reactive oxygen species can modulate neutrophil adhesion to endothelial cells in preeclampsia.
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中性粒细胞衍生的活性氧可以调节先兆子痫中中性粒细胞与内皮细胞的粘附。

DOI:
10.1038/ajh.2007.87
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发表时间:
2008
影响因子:
3.2
通讯作者:
N. Wake
N. Wake
中科院分区:
医学3区
文献类型:
--
作者:
K. Tsukimori;Akitoshi Tsushima;K. Fukushima;H. Nakano;N. Wake

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背景 神经元活化与先兆子痫的病理生理学有关。本研究的目的是调查是否嗜中性粒细胞衍生的活性氧(ROS)调节粘附内皮细胞在先兆子痫。 方法 我们首先评估了正常非妊娠妇女(n = 8)、正常妊娠妇女(n = 10)和先兆子痫妊娠妇女(n = 8)的中性粒细胞超氧化物生成和嗜中性粒细胞-内皮细胞粘附。然后,我们研究了嗜中性粒细胞衍生的ROS对嗜中性粒细胞-内皮细胞粘附的影响。使用细胞色素C还原法测定中性粒细胞超氧化物的释放。 结果 N-甲酰甲硫氨酰亮氨酰苯丙氨酸(FMLP)刺激的中性粒细胞超氧化物的产生显着增加与先兆子痫的妇女相比,其他两组。先兆子痫妇女的中性粒细胞比其他两组的中性粒细胞更容易粘附于内皮细胞(平均粘附率+/- s.d.子痫前期组20.6 ± 2.7,正常妊娠组10.2 ± 1.2,正常非妊娠组11.0 ± 0.9,P < 0.01)。超氧化物歧化酶(SOD),歧化多余的超氧化物为过氧化氢,不影响嗜中性粒细胞内皮细胞粘附。相比之下,催化过氧化氢转化为氧气和水的过氧化氢酶抑制先兆子痫组的嗜中性粒细胞-内皮细胞粘附(8.1 ± 0.5%,P < 0.01)。 结论 先兆子痫妇女的中性粒细胞表现出增加的CD 11b表达和粘附内皮细胞。这可能是由于超氧化物及其衍生物过氧化氢的升高造成的。
BACKGROUND Neutrophil activation has been implicated in the pathophysiology of preeclampsia. The aim of this study was to investigate whether neutrophil-derived reactive oxygen species (ROS) modulate adhesion to endothelial cells in preeclampsia. METHODS We first assessed neutrophil superoxide production and neutrophil-endothelial cell adhesion in normal nonpregnant women (n = 8), normal pregnant women (n = 10), and preeclamptic pregnant women (n = 8). We then examined the effects of neutrophil-derived ROS on neutrophil-endothelial adhesion. The release of neutrophil superoxide was measured using cytochrome C reduction. RESULTS N-formyl-methionyl-leucyl-phenylalanine (FMLP)-stimulated superoxide production by neutrophils was significantly increased in women with preeclampsia when compared with the other two groups. Neutrophils from women with preeclampsia were more likely to adhere to endothelial cells, than were those from the other two groups (mean adhesion rate +/- s.d. (%); 20.6 +/- 2.7 in preeclampsia, 10.2 +/- 1.2 in normal pregnancy, 11.0 +/- 0.9 in normal nonpregnancy, P < 0.01). Superoxide dismutase (SOD), which dismutates the excess superoxide to hydrogen peroxide, did not affect neutrophil-endothelial adhesion. In contrast, catalase, which catalyzes the conversion of hydrogen peroxide to oxygen and water, inhibited neutrophil-endothelial adhesion in the preeclamptic group (8.1 +/- 0.5%, P < 0.01). CONCLUSION Neutrophils from women with preeclampsia demonstrate increased CD11b expression and adhesion to endothelial cells. This is likely caused by elevations in superoxide and its derivative, hydrogen peroxide.
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DOI: 10.1172/jci119224
发表时间: 1997
期刊: The Journal of clinical investigation
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作者:
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发表时间: 1991-06-01
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DOI: 10.1152/ajpcell.1996.271.5.c1424
发表时间: 1996
期刊: The American journal of physiology
影响因子: --
作者:
Beckman,JS;Koppenol,WH
通讯作者: Koppenol,WH
DOI: 10.1111/j.0954-6820.1987.tb09912.x
发表时间: 2009-04
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影响因子: --
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白细胞整合素 CD11a/CD18 和 CD11b/CD18 或细胞间粘附分子 1 的单克隆抗体可在体外抑制趋化剂刺激的中性粒细胞跨内皮迁移。
DOI: --
发表时间: 1991
期刊: Blood
影响因子: 20.3
作者:
Furie,MB;Tancinco,MC;Smith,CW
通讯作者: Smith,CW