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Neurology:MPO可能与急性脑缺血患者中性粒细胞的有害作用有关

2020-03-01 xing.T MedSci原创

由此可见,与MMP-9相比,急性脑缺血患者中性粒细胞计数、NLR和血浆MPO浓度与较差的患者预后有关。需要进一步的研究来加深MPO在嗜中性粒细胞有害作用中的认识,因为它可能是潜在的治疗靶标。

急性脑缺血患者循环中性粒细胞计数和中性粒细胞与淋巴细胞之比(NLR)与卒中严重程度和预后不良呈正相关。这种作用的介导因素尚不明确。近日,神经病学领域权威取杂志Neurology上发表了一篇研究文章,研究人员旨在探究(1)血浆基质金属蛋白酶9(MMP-9)和髓过氧化物酶(MPO)浓度与卒中严重程度和患者预后之间的关系,以及(2)重组组织纤溶酶原激活剂(rtPA)离体刺激中性粒细胞后MMP-9和MPO的释放情况。

研究人员分析了255例症状发作后48小时内招募的幕上性脑梗死患者数据,无论有无进行rtPA治疗。该研究的终点是良好的结局(改良的Rankin量表评分为0-1)、症状性脑出血(欧洲合作急性卒中研究–II定义)和3个月时死亡。在4.5小时内和72小时后,研究人员探究了18例患者接受rtPA治疗后对外周中性粒细胞脱粒的影响。

中性粒细胞计数、NLR和血浆MPO浓度(而非MMP-9)与卒中严重程度呈正相关。较高的中性粒细胞计数和NLR独立地与较差的结局和较高的3个月死亡率相关,而较高的血浆MPO浓度而非MMP-9则与较差的患者结局相关。rtPA治疗的患者在72小时后中性粒细胞来源的MMP-9升高,而MPO则不然,且与出血性转化无关。

由此可见,与MMP-9相比,急性脑缺血患者中性粒细胞计数、NLR和血浆MPO浓度与较差的患者预后有关。需要进一步的研究来加深MPO在嗜中性粒细胞有害作用中的认识,因为它可能是潜在的治疗靶标。

原始出处:

Ilaria Maestrini,et al.MPO is partially associated with neutrophil deleterious effect in acute cerebral ischemia.Neurology.2020.https://doi.org/10.1212/WNL.0000000000009179

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    2020-03-20 yinhl1978
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    2020-03-03 风铃826

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