{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,26]],"date-time":"2026-10-26T04:35:39Z","timestamp":1792989339405,"version":"4.5.0"},"reference-count":44,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2025,8,8]],"date-time":"2025-08-08T00:00:00Z","timestamp":1754611200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Italian Ministry of Health-Ricerca Corrente to Centro Cardiologico Monzino IRCCS","award":["B43C24000090001"],"award-info":[{"award-number":["B43C24000090001"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>The mechanisms underlying the effects of dapagliflozin in heart failure with reduced ejection fraction (HFrEF) are not yet fully understood. This study aims to evaluate the effect of the drug on cardiorespiratory function by assessing alveolar\u2013capillary membrane characteristics, sleep apnea, pulmonary and cardiac performance in stable HFrEF patients. Seventy-three patients with stable HFrEF were enrolled, with 66 completing the six-month follow-up. Analyses included assessment of the alveolar\u2013capillary membrane by diffusion capacity, including its membrane diffusion and capillary volume components and measurements of proSP-B in the blood, an emerging biomarker of alveolar\u2013capillary membrane function. Pulmonary function tests, overnight respiratory monitoring, and echocardiographic parameter collection were also conducted. After 6 months, a reduction in circulating proSP-B levels was observed (32.65 \u00b1 13.36 at baseline vs. 30.86 \u00b1 12.45 AU at 6 months, p for trend 0.0092), accompanied by improvements in echocardiographic parameters (left ventricle ejection fraction and pulmonary pressures). Pulmonary function tests and overnight respiratory monitoring showed no significant changes in lung diffusion, spirometry, or obstructive sleep apnea (apnea hypopnea index from 5.0 [1.1\u201316.6] at baseline to 6.2 [0.7\u201313.8]\/h; p = n.s.). A significant reduction in central sleep apnea (CSA) was noted in the 13 patients with at least one CSA at baseline (15 [3\u201348] vs. 0 [0\u201318.5]\/h, p = 0.017). Dapagliflozin demonstrates both hemodynamic and non-hemodynamic effects, particularly improving alveolar\u2013capillary membrane function. This study highlights the multifactorial benefits of dapagliflozin in patients with stable HFrEF and the potential of proSP-B as a sensitive marker for evaluating therapeutic response.<\/jats:p>","DOI":"10.3390\/ijms26167696","type":"journal-article","created":{"date-parts":[[2025,8,8]],"date-time":"2025-08-08T15:30:52Z","timestamp":1754667052000},"page":"7696","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Short-term effects of DAPAgliflozin on Lung fUNction, sleep apneas, and circulatinG surfactant protein B in Heart Failure with reduced ejection fraction (DAPA-LUNG-HF)"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9985-7407","authenticated-orcid":false,"given":"Massimo","family":"Mapelli","sequence":"first","affiliation":[{"name":"Centro Cardiologico Monzino, IRCCS, 20138 Milan, Italy"},{"name":"Department of Clinical Sciences and Community Health, Cardiovascular 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