哮喘患者嗜酸性粒细胞增多症对严重COVID-19疾病有保护作用

2021/02/09

   摘要
   背景:目前关于新冠肺炎(COVID-19)在哮喘中转归的相关信息缺乏。
   目的:确定感染COVID-19的哮喘患者入院及随后死亡相关的危险因素。
   方法:回顾性分析我院2020年3月14日至4月27日之间新冠肺炎检测呈阳性的成人。记录合并症、实验室检查结果和住院期间的死亡率。
   结果:总共观察到951例COVID-19哮喘患者中的737例(77.5%)在急诊科(ED)就诊,其中78.8%的哮喘患者(581/737)入院治疗。先前测量平均绝对嗜酸性粒细胞计数≥150cells/μL的患者入院的可能性较小(优势比[OR]=0.46,95%可信区间[CI]:0.21-0.98,P=0.04),而合并心力衰竭(CHF),慢性肾脏病(CKD)和慢性阻塞性肺疾病(COPD)是入院的危险因素。与AEC<150 cells/μL(n = 213)的患者相比,AEC峰值≥150细胞/μL(n = 104)的住院哮喘患者死亡的可能性较小(死亡率为9.6%vs25.8%;OR = 0.006,95%CI:0.0001-0.64,P =0 .03)。该组的入院前平均AEC也较高(237±181 vs 163±147cells/μL,P =0 .001,OR = 2012,95%CI:27.3-14,816)。单纯哮喘患者(无相关CHF、CKD、COPD、糖尿病或高血压)的死亡率与无哮喘或上述任何合并症的患者的死亡率相似。
   结论:在哮喘患者中,预先存在的嗜酸性粒细胞增多症(AEC​​≥150 cells/μL)可以防止新冠肺炎相关的入院,且住院期间嗜酸性粒细胞增多症(AEC​​≥150 cells/μL)与死亡率降低相关。入院前AEC影响住院期间AEC趋势。具有Th2型哮喘表型可能是降低新冠肺炎发病率和死亡率的重要预测指标,应在前瞻性和机制研究中进一步探讨。

 
(中日友好医院呼吸与危重症医学科 王静茹 摘译 林江涛 审校)
(J Allergy Clin Immunol Pract. 2021 Jan 22;S2213-2198(20)31409-4. doi: 10.1016/j.jaip.2020.12.045.)

 
 
 
Eosinophilia in Asthma Patients Is Protective Against Severe COVID-19 Illness
 
Denisa Ferastraoaru, Golda Hudes, Elina Jerschow, Sunit Jariwala, Merhunisa Karagic, Gabriele de Vos, David Rosenstreich, Manish Ramesh

Abstract
BACKGROUND:There is a paucity of information on coronavirus disease 2019 (COVID-19) outcomes in asthmatics.
Objective:To identify risk factors associated with admission and subsequent mortality among COVID-19-infected asthmatics.
Methods:Adults at our institution with a positive polymerase chain reaction for COVID-19 between March 14 and April 27, 2020, were retrospectively identified. Comorbidities, laboratory results, and mortality rates during hospitalization were recorded.
Results:In total, 737 of 951 (77.5%) asthma patients with COVID-19 were seen in the emergency department (ED), and 78.8% of these ED patients (581 of 737) were admitted. Individuals with previously measured mean absolute eosinophil counts (AEC) ≥150 cells/μL were less likely to be admitted (odds ratio [OR] = 0.46, 95% confidence interval [CI]: 0.21-0.98, P = .04), whereas concomitant heart failure (CHF), chronic kidney disease (CKD), and chronic obstructive pulmonary disease (COPD) were risk factors for admission. Hospitalized patients with asthma with peak hospital-measured AEC ≥150 cells/μL (n = 104) were less likely to die compared with those whose AEC remained <150 cells/μL (n = 213) (mortality rate 9.6% vs 25.8%; OR = 0.006, 95% CI: 0.0001-0.64, P = .03). This group had also higher preadmission mean AEC (237 ± 181 vs 163 ± 147 cells/μL, P = .001, OR = 2012, 95% CI: 27.3-14,816). The mortality rate in patients with asthma alone (no associated CHF, CKD, COPD, diabetes, or hypertension) was similar to that of patients without asthma or any of these comorbidities.
Conclusions:In asthmatics, pre-existing eosinophilia (AEC ≥150 cells/μL) was protective from COVID-19-associated admission, and development of eosinophilia (AEC ≥150 cells/μL) during hospitalization was associated with decreased mortality. Preadmission AEC influenced the AEC trend during hospitalization. Having a Th2-asthma phenotype might be an important predictor for reduced COVID-19 morbidity and mortality that should be further explored in prospective and mechanistic studies.




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