补充铁对伴铁缺乏的女性慢性咳嗽的治疗作用
2012/12/25
摘要
目的:在女性中,慢性咳嗽的发病率和严重程度均高于男性。女性常常由于月经和妊娠的影响,导致体内铁储量下降。本试验研究铁缺乏是否可以通过增加气道对吸入刺激物的敏感性而影响慢性咳嗽。
方法:22名铁缺乏(血清铁蛋白低于15 ng/ml)、非吸烟、患有慢性不明原因哮喘的女性患者入选本研究。在基线状态下、给予2个月抗组胺H1和质子泵抑制剂的经验治疗后并补充铁剂2个月后(每日330-660 mg硫酸铁片剂),检测咳嗽视觉模拟量表(VAS)评分、喉(PC25MIF50:MIF50下降25%时的浓度)、支气管(PC20FEV1)及咳嗽(PC5咳嗽)的组胺阈值。
结果:平均血清铁蛋白为9.3 ng/ml(95% CI 7.7-10.9),13名患者诊断为轻度贫血。所有患者均出现喉和咳嗽高反应性,12名患者同时出现支气管过敏。经验性治疗对咳嗽无效,而补充铁剂能改善VAS(从4.03[3.6-4.47]下降至2.6[1.9-3.27],P<0.0001)、PC20FEV1(从10.04 mg/ml [5.37-18.77]增加至22.2[11.7-41.8],P <0.001)、PC25MIF50(3.09 mg/ml[1.9-4.9]增加至11.9[7.3-19.4],P <0.001)和PC5咳嗽(2.1 mg/ml[1.2-3.6]增加至8.8[5.2-15.1],P <0.001)。
结论:对于女性患者不明原因的慢性咳嗽,如果对症治疗无效,铁缺乏可能是气道和咳嗽高反应持续存在的原因。患有慢性咳嗽的健康女性应该检查是否出现铁缺乏症。如存在铁缺乏症,补充铁剂可能缓解症状。
(林江涛 审校)
Int J Clin Pract. 2012 Nov;66(11):1095-1100. doi: 10.1111/ijcp.12001.
Effect of iron supplementation in women with chronic cough and iron deficiency.
Bucca C, Culla B, Brussino L, Ricciardolo FL, Cicolin A, Heffler E, Bugiani M, Rolla G.
Source
Department of Clinical Pathophysiology, Respiratory Pathophysiology Unit, University of Turin, Turin, Italy Department of Surgical and Medical Disciplines, University of Turin, Turin, Italy Department of Biomedical Sciences and Human Oncology, University of Turin, Turin, Italy Department of Clinical and Biological Sciences, Division of Respiratory Disease, University of Turin, Turin, Italy Department of Neurosciences, University of Turin, Turin, Italy Pneumology Unit, Consorzio Provinciale Antitubercolare, Local Health Agency Turin 2, Turin, Italy.
Abstract
AIMS: Chronic cough is more frequent and severe in women than in men. Women often have decreased iron stores, because of menses and pregnancies. We investigated if iron deficiency has a role in chronic cough by increasing airway sensitivity to inhaled irritants.
METHODS: Twenty-two non-smoking women with chronic unexplained cough and iron deficiency (serum ferritin below 15 ng/ml) were examined in baseline, after 2 months empiric treatment with anti H1-histaminic drug and proton pump inhibitor, and after iron supplementation (330-660 mg iron sulphate tablets daily) for 2 months. Outcome measures were cough visual analogue scale (VAS), and histamine thresholds of the larynx (PC25MIF50, concentration causing 25% in MIF50), bronchi (PC20FEV1) and cough (PC5cough).
RESULTS: Mean serum ferritin was 9.3 ng/ml (95% CI 7.7-10.9), 13 patients had mild anaemia. All the patients had laryngeal and cough hyperresponsiveness,12 had also bronchial hyperresponsiveness. Empiric treatment produced no significant effect, whereas iron supplementation improved cough VAS from 4.03 (3.6-4.47) to 2.6 (1.9-3.27), p < 0.0001, PC20FEV1 from 10.04 mg/ml (5.37-18.77) to 22.2 (11.7-41.8), p < 0.001, PC25MIF50 from 3.09 mg/ml (1.9-4.9) to 11.9 (7.3-19.4), p < 0.001 and PC5cough from 2.1 mg/ml (1.2-3.6) to 8.8 (5.2-15.1), p < 0.001.
CONCLUSION: In women with unexplained chronic cough unresponsive to targeted treatment, airway and cough hyperresponsiveness may be sustained by iron deficiency. Healthy women with chronic cough should be checked for iron deficiency as iron repletion may resolve such disturbing symptom.
Int J Clin Pract. 2012 Nov;66(11):1095-1100. doi: 10.1111/ijcp.12001.
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急性咳嗽:以色列城市健康中心中的抗菌药物和医疗服务使用情况
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慢性非哮喘性咳嗽患者的气道炎症