{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,20]],"date-time":"2026-07-20T14:18:48Z","timestamp":1784557128862,"version":"3.55.0"},"reference-count":42,"publisher":"Bioscientifica","issue":"1","content-domain":{"domain":["joe.bioscientifica.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2012,10]]},"abstract":"<jats:p>\n                    Leptin has been shown to regulate the hypothalamus\u2013pituitary\u2013thyroid axis, acting primarily through the STAT3 pathway triggered through the binding of leptin to the long-chain isoform of the leptin receptor, ObRb. We previously demonstrated that although hyperthyroid rats presented leptin effects on TSH secretion, those effects were abolished in hypothyroid rats. We addressed the hypothesis that changes in the STAT3 pathway might explain the lack of TSH response to leptin in hypothyroidism by evaluating the protein content of components of leptin signalling via the STAT3 pathway in the hypothalamus and pituitary of hypothyroid (0.03% methimazole in the drinking water\/21 days) and hyperthyroid (thyroxine 5\u200a\u03bcg\/100\u200ag body weight \/5 days) rats. Hypothyroid rats exhibited decreased ObRb and phosphorylated STAT3 (pSTAT3) protein in the hypothalamus, and in the pituitary gland they exhibited decreased ObRb, total STAT3, pSTAT3 and SOCS3 (\n                    <jats:italic>P<\/jats:italic>\n                    &lt;0.05). Except for a modest decrease in pituitary STAT3, no other alterations were observed in hyperthyroid rats. Moreover, unlike euthyroid rats, the hypothyroid rats did not exhibit a reduction in food ingestion after a single injection of leptin (0.5\u200amg\/kg body weight). Therefore, hypothyroidism decreased ObRb\u2013STAT3 signalling in the hypothalamus and pituitary gland, which likely contributes to the loss of leptin action on food intake and TSH secretion, as previously observed in hypothyroid rats.\n                  <\/jats:p>","DOI":"10.1530\/joe-11-0476","type":"journal-article","created":{"date-parts":[[2012,8,9]],"date-time":"2012-08-09T01:48:29Z","timestamp":1344476909000},"page":"129-135","update-policy":"https:\/\/doi.org\/10.1530\/crossmarkpolicy-1","source":"Crossref","is-referenced-by-count":16,"title":["Hypothyroidism reduces ObRb\u2013STAT3 leptin signalling in the hypothalamus and pituitary of rats associated with resistance to leptin acute anorectic action"],"prefix":"10.1530","volume":"215","author":[{"given":"Camila","family":"Calvino","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luana L","family":"Souza","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ricardo H","family":"Costa-e-Sousa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Norma A S","family":"Almeida","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Isis H","family":"Trevenzoli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carmen C","family":"Pazos-Moura","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"416","reference":[{"issue":"4","key":"1_32729271","doi-asserted-by":"publisher","first-page":"811","DOI":"10.1016\/j.ecl.2008.08.005","volume":"37","author":"Ahima","year":"2008","journal-title":"Endocrinology and metabolism clinics of North America","ISSN":"https:\/\/id.crossref.org\/issn\/0889-8529","issn-type":"print"},{"key":"2_43637594","doi-asserted-by":"crossref","first-page":"413","DOI":"10.1146\/annurev.physiol.62.1.413","volume":"62","year":"2000","journal-title":"ANNUAL REVIEWS IN PHYSIOLOGY"},{"key":"3_43637595","doi-asserted-by":"crossref","first-page":"1157","DOI":"10.1152\/ajpendo.90869.2008","volume":"296","year":"2009","journal-title":"American Journal of Physiology - Endocrinology And Metabolism","ISSN":"https:\/\/id.crossref.org\/issn\/0193-1849","issn-type":"print"},{"issue":"10","key":"4_17936157","doi-asserted-by":"publisher","first-page":"447","DOI":"10.1016\/j.tem.2003.10.003","volume":"14","author":"Bates","year":"2003","journal-title":"Trends in endocrinology and metabolism: TEM","ISSN":"https:\/\/id.crossref.org\/issn\/1043-2760","issn-type":"print"},{"issue":"6925","key":"5_17508343","doi-asserted-by":"publisher","first-page":"856","DOI":"10.1038\/nature01388","volume":"421","author":"Bates","year":"2003","journal-title":"Nature; Physical Science (London)","ISSN":"https:\/\/id.crossref.org\/issn\/1476-4687","issn-type":"print"},{"issue":"42","key":"6_10991869","doi-asserted-by":"publisher","first-page":"30059","DOI":"10.1074\/jbc.274.42.30059","volume":"274","author":"Bjorbak","year":"1999","journal-title":"Journal of Biological Chemistry","ISSN":"https:\/\/id.crossref.org\/issn\/0021-9258","issn-type":"print"},{"key":"7_4058442","doi-asserted-by":"publisher","first-page":"248","DOI":"10.1016\/0003-2697(76)90527-3","volume":"72","author":"Bradford","year":"1976","journal-title":"Analytical biochemistry","ISSN":"https:\/\/id.crossref.org\/issn\/0003-2697","issn-type":"print"},{"issue":"8","key":"8_22560452","doi-asserted-by":"publisher","first-page":"481","DOI":"10.1055\/s-2006-949527","volume":"38","author":"Cabanelas","year":"2006","journal-title":"Hormone and metabolic research. 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