{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T19:13:21Z","timestamp":1784229201727,"version":"3.55.0"},"reference-count":51,"publisher":"Oxford University Press (OUP)","issue":"4","license":[{"start":{"date-parts":[[2023,9,5]],"date-time":"2023-09-05T00:00:00Z","timestamp":1693872000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,4,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>Inflammatory bowel disease (IBD), pathologically known as chronic inflammation of the gastrointestinal tract, is among the diseases with a high burden worldwide. Ghrelin and obestatin, as adipocytokines mainly in adipose tissues, are involved in immune responses and inflammatory pathways. Studies have assessed the circulatory ghrelin levels in patients with IBD. Herein, we aim to pool these studies through systematic review and meta-analysis.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>Four international databases, PubMed, Embase, Scopus, and the Web of Science were systematically searched for studies assessing ghrelin or obestatin levels in patients with IBD (either Crohn\u2019s disease [CD] or ulcerative colitis [UC]) in active phase or in remission. Random-effects meta-analysis was conducted in order to calculate the pooled estimate using the standardized mean difference (SMD) and 95% confidence interval (CI).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>Nineteen studies were included in our systematic review, comprising 1064 patients with IBD (476 UC and 588 CD). A meta-analysis of 11 studies for comparison of active and quiescent disease showed that patients with active IBD had significantly higher levels of ghrelin (SMD, 0.70; 95% CI, 0.06 to 1.34; P\u2005=\u2005.03). However, in separate analyses for UC or CD, no such difference was observed (SMD, 1.30; 95% CI, \u22120.28 to 2.88, P\u2005=\u2005.11; and SMD, 0.80; 95% CI, \u22120.41 to 2.01; P\u2005=\u2005.20, respectively). No significant difference was also observed in ghrelin levels between patients with active IBD and healthy control subjects. Obestatin levels also were not different between patients with active disease and those in remission (SMD, 0.31; 95% CI, \u22120.05 to 0.68; P\u2005=\u2005.09). On the other hand, the obestatin\/ghrelin ratio was significantly lower in patients with active IBD (SMD, \u22121.90; 95% CI, \u22122.45 to \u22121.35; P\u2005&amp;lt;\u2005.01).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>Our results demonstrate that IBD patients with active disease have higher levels of ghrelin, which needs to be confirmed in future studies. Also, the obestatin\/ghrelin ratio might be a promising biomarker for the assessment of disease activity.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/ibd\/izad202","type":"journal-article","created":{"date-parts":[[2023,9,5]],"date-time":"2023-09-05T16:16:46Z","timestamp":1693930606000},"page":"629-640","source":"Crossref","is-referenced-by-count":7,"title":["Unveiling the Ghrelin and Obestatin Roles in Inflammatory Bowel Diseases: A Systematic Review and Meta-Analysis Assessing Their Pathogenic Implications and Biomarker Utility"],"prefix":"10.1093","volume":"30","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6138-1914","authenticated-orcid":false,"given":"Amirmohammad","family":"Khalaji","sequence":"first","affiliation":[{"name":"School of Medicine, Tehran University of Medical Sciences , Tehran , Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nastaran","family":"Babajani","sequence":"additional","affiliation":[{"name":"School of Medicine, Tehran University of Medical Sciences , Tehran , Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zahra","family":"Amirsardari","sequence":"additional","affiliation":[{"name":"Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences , Tehran , Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Behrad","family":"Saeedian","sequence":"additional","affiliation":[{"name":"School of Medicine, Tehran University of Medical Sciences , Tehran , Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Soheil","family":"Peiman","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, AdventHealth Orlando Hospital , Orlando, FL , USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nathan A","family":"Berger","sequence":"additional","affiliation":[{"name":"Case Comprehensive Cancer Center, Case Western Reserve University , Cleveland, OH , USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amir Hossein","family":"Behnoush","sequence":"additional","affiliation":[{"name":"School of Medicine, Tehran University of Medical Sciences , Tehran , Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2023,9,5]]},"reference":[{"issue":"9573","key":"2024040305550002500_CIT0001","doi-asserted-by":"crossref","first-page":"1627","DOI":"10.1016\/S0140-6736(07)60750-8","article-title":"Inflammatory bowel disease: cause and immunobiology","volume":"369","author":"Baumgart","year":"2007","journal-title":"Lancet"},{"issue":"1","key":"2024040305550002500_CIT0002","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1016\/S2468-1253(19)30333-4","article-title":"The global, regional, and national burden of inflammatory bowel disease in 195 countries and territories, 1990\u20132017: a systematic analysis for the Global Burden of Disease Study 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