{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,4]],"date-time":"2026-11-04T07:17:10Z","timestamp":1793776630225,"version":"4.6.1"},"reference-count":52,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"10","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circulation Research"],"published-print":{"date-parts":[[2018,5,11]]},"abstract":"<jats:sec>\n                    <jats:title>\n                      <jats:underline>Rationale:<\/jats:underline>\n                    <\/jats:title>\n                    <jats:p>Macrophages face a substantial amount of cholesterol after the ingestion of apoptotic cells, and the LIPA (lysosomal acid lipase) has a major role in hydrolyzing cholesteryl esters in the endocytic compartment.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>\n                      <jats:underline>Objective:<\/jats:underline>\n                    <\/jats:title>\n                    <jats:p>Here, we directly investigated the role of LIPA-mediated clearance of apoptotic cells both in vitro and in vivo.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>\n                      <jats:underline>Methods and Results:<\/jats:underline>\n                    <\/jats:title>\n                    <jats:p>We show that LIPA inhibition causes a defective efferocytic response because of impaired generation of 25-hydroxycholesterol and 27-hydroxycholesterol. Reduced synthesis of 25-hydroxycholesterol after LIPA inhibition contributed to defective mitochondria-associated membrane leading to mitochondrial oxidative stress\u2013induced NLRP3 (NOD-like receptor family, pyrin domain containing) inflammasome activation and caspase-1\u2013dependent Rac1 (Ras-related C3 botulinum toxin substrate 1) degradation. A secondary event consisting of failure to appropriately activate liver X receptor\u2013mediated pathways led to mitigation of cholesterol efflux and apoptotic cell clearance. In mice, LIPA inhibition caused defective clearance of apoptotic lymphocytes and stressed erythrocytes by hepatic and splenic macrophages, culminating in splenomegaly and splenic iron accumulation under hypercholesterolemia.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>\n                      <jats:underline>Conclusions:<\/jats:underline>\n                    <\/jats:title>\n                    <jats:p>Our findings position lysosomal cholesterol hydrolysis as a critical process that prevents metabolic inflammation by enabling efficient macrophage apoptotic cell clearance.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1161\/circresaha.117.312333","type":"journal-article","created":{"date-parts":[[2018,3,9]],"date-time":"2018-03-09T05:11:25Z","timestamp":1520572285000},"page":"1369-1384","update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":140,"title":["Lysosomal Cholesterol Hydrolysis Couples Efferocytosis to Anti-Inflammatory Oxysterol Production"],"prefix":"10.1161","volume":"122","author":[{"given":"Manon","family":"Viaud","sequence":"first","affiliation":[{"name":"From the Institut National de la Sant\u00e9 et de la Recherche M\u00e9dicale (Inserm) U1065, Universit\u00e9 C\u00f4te d\u2019Azur, Centre M\u00e9diterran\u00e9en de M\u00e9decine Mol\u00e9culaire (C3M), Atip-Avenir, F\u00e9d\u00e9ration Hospitalo-Universitaire (FHU) Oncoage, Nice, France (M.V., S.I., L.-E.A., E.G., S.M., L.B., R.G., L.Y.-C.)"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stoyan","family":"Ivanov","sequence":"additional","affiliation":[{"name":"From the Institut National de la Sant\u00e9 et de la Recherche M\u00e9dicale (Inserm) U1065, Universit\u00e9 C\u00f4te d\u2019Azur, Centre M\u00e9diterran\u00e9en de M\u00e9decine Mol\u00e9culaire (C3M), Atip-Avenir, F\u00e9d\u00e9ration Hospitalo-Universitaire (FHU) Oncoage, Nice, France (M.V., S.I., 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