Vitamin D Deficiency and Asthma Exacerbation (AVD)
Effect of Vitamin D Repletion on Asthma Exacerbation
調査の概要
詳細な説明
The first phase of the study consisted of a cross-sectional examination of a cohort of 119 asthmatic patients, who had at least one year regular follow-up in our respiratory clinic, and were not receiving any vitamin D supplementation.
In the second phase patients with vitamin D deficiency (25-OH D values below 20 ng/ml), were recruited in a one year longitudinal study, during which they received vitamin D supplementation. The study started and ended in late autumn-winter season when, at our latitude, sun exposure is lowest. Symptoms, spirometry and number of exacerbations were recorded during both study phases.
研究の種類
入学 (実際)
段階
- 適用できない
参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- All the consecutive patients with bronchial asthma of any severity, who presented for a scheduled visit at our Respiratory Clinic during the period October 2012-March 2013 and who had at least one year regular follow-up every three months
Exclusion Criteria:
- Acute exacerbation in the last month and treatment with vitamins and dietary supplements in the last year.
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:なし
- 介入モデル:単一グループの割り当て
- マスキング:なし(オープンラベル)
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
他の:asthma severity and disease exacerbation
intramuscular cholecalciferol 100,000 IU, followed by oral cholecalciferol 5000 IU weekly plus 400 IU daily for one year
|
Inhaled corticosteroids and long-acting beta-agonists, salbutamol
他の名前:
|
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Relationship between serum 25-hydroxide (OH) vitamin D level and asthma exacerbations (number/year= unscheduled visits for worsening symptoms, increase in therapy)
時間枠:one year
|
119 consecutive asthmatic patients underwent serum vitamin D (25-OHD) and lung function assessment.
Their medical records were retrospectively reviewed, to gain information on disease exacerbations during the 12 months preceding study entry.
The relationship between baseline 25-OH vitamin D and number of exacerbation was investigated
|
one year
|
|
Effect of vitamin D supplementation in patients with 25-OH vitamin D < 20 ng/ml on asthma exacerbations (number/year= unscheduled visits for worsening symptoms, increase in therapy)
時間枠:One year
|
55 asthmatic patients with 25-OH vitamin D below 20 ng/ml underwent supplementation with cholecalciferol for one year (intramuscular 100,000 IU, followed by oral 5000 IU weekly plus 400 IU daily for one year).
Number of exacerbations were recorded during the year of supplementation and compared with the data recorded during vitamin D deficiency
|
One year
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Relationship between serum 25-OH vitamin D level and airway obstruction (evaluated by spirometry: one second forced expiratory volume, FEV1 l/sec, vital capacity (VC) and FEV1/VC%)
時間枠:one year
|
119 consecutive asthmatic patients underwent serum vitamin D (25-OHD, ng/ml) and lung function assessment.
Their medical records were retrospectively reviewed, to gain information on lung function tests (forced expiratory volume in 1 second, FEV1, and vital capacity, VC) during the 12 months preceding study entry.
The relationship between baseline 25-OH vitamin D and airway obstruction (FEV1 and FEV1/VC%) was investigated
|
one year
|
|
Effect of vitamin D supplementation in patients with 25-OH vitamin D < 20 ng/ml on airway obstruction ( FEV1 l/sec, FEV1/VC%)
時間枠:one year
|
55 asthmatic patients with 25-OH vitamin D below 20 ng/ml underwent supplementation with cholecalciferol for one year (intramuscular 100,000 IU, followed by oral 5000 IU weekly plus 400 IU daily for one year).
Lung function tests (FEV1, VC and FEV1/VC%) were recorded during the year of supplementation and compared with the data recorded during vitamin D deficiency
|
one year
|
協力者と研究者
捜査官
- スタディチェア:Caterina B Bucca, MD、Dept. Medical Science, University of Turin
出版物と役立つリンク
一般刊行物
- Malinovschi A, Masoero M, Bellocchia M, Ciuffreda A, Solidoro P, Mattei A, Mercante L, Heffler E, Rolla G, Bucca C. Severe vitamin D deficiency is associated with frequent exacerbations and hospitalization in COPD patients. Respir Res. 2014 Dec 13;15(1):131. doi: 10.1186/s12931-014-0131-0.
- Masoero M, Bellocchia M, Ciuffreda A, Ricciardolo FL, Rolla G, Bucca C. Laryngeal spasm mimicking asthma and vitamin d deficiency. Allergy Asthma Immunol Res. 2014 May;6(3):267-9. doi: 10.4168/aair.2014.6.3.267. Epub 2014 Jan 14.
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
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