{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T08:54:50Z","timestamp":1790153690790,"version":"4.0.1"},"reference-count":48,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2026,4,13]],"date-time":"2026-04-13T00:00:00Z","timestamp":1776038400000},"content-version":"vor","delay-in-days":12,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T00:00:00Z","timestamp":1775001600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Immunity Inflam &amp;amp; Disease"],"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Evidence supporting the therapeutic efficacy of Bufei Nashen pill (BFNSP) for chronic obstructive pulmonary disease (COPD) is currently limited. We evaluated BFNSP's effects on COPD progression and elucidated its potential mechanisms through LC\/MS analysis of its active components.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Following the establishment of a rat COPD model, animals received graded BFNSP doses. Pulmonary function testing quantified respiratory parameters, while HE staining revealed histological changes in lung tissue. ELISA was used to measure TGF\u2010\u03b21, IL\u20106, IL\u20108, and IL\u20101\u03b2 concentrations in BALF, as well as MDA, SOD, and GSH levels in lung tissue. Immunofluorescence staining was used to detect the levels of GRP78 and CHOP expression. Protein expression levels of GRP78, CHOP, p\u2010PERK, p\u2010eIF2\u03b1, and p\u2010ATF4 in lung tissue were analyzed using Western blotting. The results were further confirmed through in vitro cellular assays.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The study found that BFNSP improved pulmonary ventilation, reduced lung tissue damage, decreased inflammatory factor secretion, and alleviated oxidative and endoplasmic reticulum stress in COPD rats by inhibiting the PERK\/eIF2\u03b1 signaling pathway, potentially slowing COPD progression.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>BFNSP mitigates COPD progression by regulating endoplasmic reticulum stress via the suppression of the PERK\/eIF2\u03b1 signaling pathway.<\/jats:p>\n                  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