{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T00:22:34Z","timestamp":1791332554079,"version":"4.3.1"},"reference-count":54,"publisher":"The Endocrine Society","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2016,4,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Leptin treatment has beneficial effects on plasma lipids in patients with lipodystrophy, but the underlying mechanism is unknown. Proprotein convertase subtilisin\/kexin type 9 (PCSK9) decreases low-density lipoprotein (LDL) clearance, promotes hypercholesterolemia, and has recently emerged as a novel therapeutic target. To determine the effect of leptin on PCSK9, we treated male and female ob\/ob mice with leptin for 4 days via sc osmotic pumps (\u223c24 \u03bcg\/d). Leptin reduced body weight and food intake in all mice, but the effects of leptin on plasma PCSK9 and lipids differed markedly between the sexes. In male mice, leptin suppressed PCSK9 but had no effect on plasma triglycerides or cholesterol. In female mice, leptin suppressed plasma triglycerides and cholesterol but had no effect on plasma PCSK9. In parallel, we treated female lipodystrophic patients (8 females, ages 5\u201323 y) with sc metreleptin injections (\u223c4.4 mg\/d) for 4\u20136 months. In this case, leptin reduced plasma PCSK9 by 26% (298 \u00b1 109 vs 221 \u00b1 102 ng\/mL; n = 8; P = .008), and the change in PCSK9 was correlated with a decrease in LDL cholesterol (r2 = 0.564, P = .03). In summary, in leptin-deficient ob\/ob mice, the effects of leptin on PCSK9 and plasma lipids appeared to be independent of one another and strongly modified by sex. On the other hand, in lipodystrophic females, leptin treatment reduced plasma PCSK9 in parallel with LDL cholesterol.<\/jats:p>","DOI":"10.1210\/en.2015-1624","type":"journal-article","created":{"date-parts":[[2016,1,29]],"date-time":"2016-01-29T18:01:37Z","timestamp":1454090497000},"page":"1421-1429","source":"Crossref","is-referenced-by-count":21,"title":["Effect of Leptin Replacement on PCSK9 in ob\/ob Mice and Female Lipodystrophic Patients"],"prefix":"10.1210","volume":"157","author":[{"given":"Amy E.","family":"Levenson","sequence":"first","affiliation":[{"name":"Division of Endocrinology (A.E.L., M.E.H., J.M., S.B.B.), Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mary E.","family":"Haas","sequence":"first","affiliation":[{"name":"Division of Endocrinology (A.E.L., M.E.H., J.M., S.B.B.), Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts 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