Endurance Training Increases Leptin Expression in the Retroperitoneal Adipose Tissue of Rats Fed with a High-Sugar Diet

The presence of leptin receptors in white adipose tissue (WAT) suggests a type of peripheral control during the development of obesity and other metabolic disorders. Both diet composition and exercise influence serum leptin; however, the effect of their combination on long-term WAT leptin metabolism...

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Veröffentlicht in:Lipids 2014-01, Vol.49 (1), p.85-96
Hauptverfasser: de Queiroz, Karina Barbosa, Guimarães, Juliana Bohnen, Coimbra, Cândido Celso, Rodovalho, Gisele Vieira, Carneiro, Cláudia Martins, Evangelista, Elísio Alberto, Guerra-Sá, Renata
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container_issue 1
container_start_page 85
container_title Lipids
container_volume 49
creator de Queiroz, Karina Barbosa
Guimarães, Juliana Bohnen
Coimbra, Cândido Celso
Rodovalho, Gisele Vieira
Carneiro, Cláudia Martins
Evangelista, Elísio Alberto
Guerra-Sá, Renata
description The presence of leptin receptors in white adipose tissue (WAT) suggests a type of peripheral control during the development of obesity and other metabolic disorders. Both diet composition and exercise influence serum leptin; however, the effect of their combination on long-term WAT leptin metabolism is unknown. In this study, rats fed with standard or high-sugar diets (HSD) were simultaneously subjected to running training for 4- and 8-week periods, and the retroperitoneal WAT (rWAT) was evaluated for adipocyte cell size, lipid and catecholamine content, Lep , OB - Rb and Ucp2 mRNA transcription levels, and circulating leptin and non-esterified fatty acids (NEFA). The HSD groups displayed a higher adiposity index and rWAT weight, Lep mRNA and protein upregulation, and a period-dependent effect on OB - Rb mRNA expression. Exercise decreased serum leptin and upregulated the OB - Rb mRNA levels. However, in rats fed with an HSD, the increase in OB - Rb mRNA and reduction in catecholamine levels resulted in a high level of adiposity and hyperleptinemia. The combination of training and an HSD decreases the NEFA levels and upregulating the Ucp2 mRNA expression in the 4-week period, while downregulating the Ucp2 mRNA expression in the 8-week period without changing the NEFA levels. Our results suggest that an HSD induces an increase in leptin expression in rWAT, while reducing adipocytes via leptin-mediated lipolysis after an 8-week period. In exercised rats fed an HSD, TAG synthesis and storage overlaps with lipolysis, promoting fat store development and Lep mRNA and plasma protein upregulation in adult rats.
doi_str_mv 10.1007/s11745-013-3854-7
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Both diet composition and exercise influence serum leptin; however, the effect of their combination on long-term WAT leptin metabolism is unknown. In this study, rats fed with standard or high-sugar diets (HSD) were simultaneously subjected to running training for 4- and 8-week periods, and the retroperitoneal WAT (rWAT) was evaluated for adipocyte cell size, lipid and catecholamine content, Lep , OB - Rb and Ucp2 mRNA transcription levels, and circulating leptin and non-esterified fatty acids (NEFA). The HSD groups displayed a higher adiposity index and rWAT weight, Lep mRNA and protein upregulation, and a period-dependent effect on OB - Rb mRNA expression. Exercise decreased serum leptin and upregulated the OB - Rb mRNA levels. However, in rats fed with an HSD, the increase in OB - Rb mRNA and reduction in catecholamine levels resulted in a high level of adiposity and hyperleptinemia. The combination of training and an HSD decreases the NEFA levels and upregulating the Ucp2 mRNA expression in the 4-week period, while downregulating the Ucp2 mRNA expression in the 8-week period without changing the NEFA levels. Our results suggest that an HSD induces an increase in leptin expression in rWAT, while reducing adipocytes via leptin-mediated lipolysis after an 8-week period. In exercised rats fed an HSD, TAG synthesis and storage overlaps with lipolysis, promoting fat store development and Lep mRNA and plasma protein upregulation in adult rats.</description><identifier>ISSN: 0024-4201</identifier><identifier>EISSN: 1558-9307</identifier><identifier>DOI: 10.1007/s11745-013-3854-7</identifier><identifier>PMID: 24243000</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Adipocytes - cytology ; Adipocytes - drug effects ; Adipocytes - metabolism ; Adipose tissue ; Animal tissues ; Animals ; Biomedical and Life Sciences ; Body fat ; Catecholamines - metabolism ; Cell Size - drug effects ; Chronic exercise ; Diet ; Dietary Carbohydrates - administration &amp; dosage ; Dietary Carbohydrates - pharmacology ; Fatty Acids, Nonesterified - blood ; Fatty Acids, Nonesterified - metabolism ; Gene Expression - drug effects ; High‐sugar diet ; Intra-Abdominal Fat - cytology ; Intra-Abdominal Fat - drug effects ; Intra-Abdominal Fat - metabolism ; Ion Channels - genetics ; Ion Channels - metabolism ; Leptin - blood ; Leptin - genetics ; Leptin - metabolism ; Leptin expression ; Life Sciences ; Lipidology ; Lipids ; Lipids - analysis ; Lipolysis - drug effects ; Male ; Medical Biochemistry ; Medicinal Chemistry ; Metabolic disorders ; Metabolism ; Microbial Genetics and Genomics ; Mitochondrial Proteins - genetics ; Mitochondrial Proteins - metabolism ; Neurochemistry ; Nutrition ; Obesity ; Original ; Original Article ; Physical Conditioning, Animal ; Radioimmunoassay ; Rats ; Rats, Wistar ; Receptors, Leptin - genetics ; Receptors, Leptin - metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Sugar ; Time Factors ; Training ; Uncoupling Protein 2</subject><ispartof>Lipids, 2014-01, Vol.49 (1), p.85-96</ispartof><rights>The Author(s) 2013</rights><rights>2014 American Oil Chemists' Society (AOCS)</rights><rights>AOCS 2014</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5185-153ab9b16bc3aa08d94b24b39771fe9a6c80080eb8185dc0f421084de1cfd6293</citedby><cites>FETCH-LOGICAL-c5185-153ab9b16bc3aa08d94b24b39771fe9a6c80080eb8185dc0f421084de1cfd6293</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11745-013-3854-7$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11745-013-3854-7$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>230,314,780,784,885,1417,27924,27925,41488,42557,45574,45575,51319</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24243000$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>de Queiroz, Karina Barbosa</creatorcontrib><creatorcontrib>Guimarães, Juliana Bohnen</creatorcontrib><creatorcontrib>Coimbra, Cândido Celso</creatorcontrib><creatorcontrib>Rodovalho, Gisele Vieira</creatorcontrib><creatorcontrib>Carneiro, Cláudia Martins</creatorcontrib><creatorcontrib>Evangelista, Elísio Alberto</creatorcontrib><creatorcontrib>Guerra-Sá, Renata</creatorcontrib><title>Endurance Training Increases Leptin Expression in the Retroperitoneal Adipose Tissue of Rats Fed with a High-Sugar Diet</title><title>Lipids</title><addtitle>Lipids</addtitle><addtitle>Lipids</addtitle><description>The presence of leptin receptors in white adipose tissue (WAT) suggests a type of peripheral control during the development of obesity and other metabolic disorders. Both diet composition and exercise influence serum leptin; however, the effect of their combination on long-term WAT leptin metabolism is unknown. In this study, rats fed with standard or high-sugar diets (HSD) were simultaneously subjected to running training for 4- and 8-week periods, and the retroperitoneal WAT (rWAT) was evaluated for adipocyte cell size, lipid and catecholamine content, Lep , OB - Rb and Ucp2 mRNA transcription levels, and circulating leptin and non-esterified fatty acids (NEFA). The HSD groups displayed a higher adiposity index and rWAT weight, Lep mRNA and protein upregulation, and a period-dependent effect on OB - Rb mRNA expression. Exercise decreased serum leptin and upregulated the OB - Rb mRNA levels. However, in rats fed with an HSD, the increase in OB - Rb mRNA and reduction in catecholamine levels resulted in a high level of adiposity and hyperleptinemia. The combination of training and an HSD decreases the NEFA levels and upregulating the Ucp2 mRNA expression in the 4-week period, while downregulating the Ucp2 mRNA expression in the 8-week period without changing the NEFA levels. Our results suggest that an HSD induces an increase in leptin expression in rWAT, while reducing adipocytes via leptin-mediated lipolysis after an 8-week period. 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Training Increases Leptin Expression in the Retroperitoneal Adipose Tissue of Rats Fed with a High-Sugar Diet</title><author>de Queiroz, Karina Barbosa ; Guimarães, Juliana Bohnen ; Coimbra, Cândido Celso ; Rodovalho, Gisele Vieira ; Carneiro, Cláudia Martins ; Evangelista, Elísio Alberto ; Guerra-Sá, Renata</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5185-153ab9b16bc3aa08d94b24b39771fe9a6c80080eb8185dc0f421084de1cfd6293</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Adipocytes - cytology</topic><topic>Adipocytes - drug effects</topic><topic>Adipocytes - metabolism</topic><topic>Adipose tissue</topic><topic>Animal tissues</topic><topic>Animals</topic><topic>Biomedical and Life Sciences</topic><topic>Body fat</topic><topic>Catecholamines - metabolism</topic><topic>Cell Size - drug effects</topic><topic>Chronic exercise</topic><topic>Diet</topic><topic>Dietary Carbohydrates - administration &amp; dosage</topic><topic>Dietary Carbohydrates - pharmacology</topic><topic>Fatty Acids, Nonesterified - blood</topic><topic>Fatty Acids, Nonesterified - metabolism</topic><topic>Gene Expression - drug effects</topic><topic>High‐sugar diet</topic><topic>Intra-Abdominal Fat - cytology</topic><topic>Intra-Abdominal Fat - drug effects</topic><topic>Intra-Abdominal Fat - metabolism</topic><topic>Ion Channels - genetics</topic><topic>Ion Channels - metabolism</topic><topic>Leptin - blood</topic><topic>Leptin - genetics</topic><topic>Leptin - metabolism</topic><topic>Leptin expression</topic><topic>Life Sciences</topic><topic>Lipidology</topic><topic>Lipids</topic><topic>Lipids - analysis</topic><topic>Lipolysis - drug effects</topic><topic>Male</topic><topic>Medical Biochemistry</topic><topic>Medicinal Chemistry</topic><topic>Metabolic disorders</topic><topic>Metabolism</topic><topic>Microbial Genetics and Genomics</topic><topic>Mitochondrial Proteins - 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Both diet composition and exercise influence serum leptin; however, the effect of their combination on long-term WAT leptin metabolism is unknown. In this study, rats fed with standard or high-sugar diets (HSD) were simultaneously subjected to running training for 4- and 8-week periods, and the retroperitoneal WAT (rWAT) was evaluated for adipocyte cell size, lipid and catecholamine content, Lep , OB - Rb and Ucp2 mRNA transcription levels, and circulating leptin and non-esterified fatty acids (NEFA). The HSD groups displayed a higher adiposity index and rWAT weight, Lep mRNA and protein upregulation, and a period-dependent effect on OB - Rb mRNA expression. Exercise decreased serum leptin and upregulated the OB - Rb mRNA levels. However, in rats fed with an HSD, the increase in OB - Rb mRNA and reduction in catecholamine levels resulted in a high level of adiposity and hyperleptinemia. The combination of training and an HSD decreases the NEFA levels and upregulating the Ucp2 mRNA expression in the 4-week period, while downregulating the Ucp2 mRNA expression in the 8-week period without changing the NEFA levels. Our results suggest that an HSD induces an increase in leptin expression in rWAT, while reducing adipocytes via leptin-mediated lipolysis after an 8-week period. In exercised rats fed an HSD, TAG synthesis and storage overlaps with lipolysis, promoting fat store development and Lep mRNA and plasma protein upregulation in adult rats.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>24243000</pmid><doi>10.1007/s11745-013-3854-7</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record>
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subjects Adipocytes - cytology
Adipocytes - drug effects
Adipocytes - metabolism
Adipose tissue
Animal tissues
Animals
Biomedical and Life Sciences
Body fat
Catecholamines - metabolism
Cell Size - drug effects
Chronic exercise
Diet
Dietary Carbohydrates - administration & dosage
Dietary Carbohydrates - pharmacology
Fatty Acids, Nonesterified - blood
Fatty Acids, Nonesterified - metabolism
Gene Expression - drug effects
High‐sugar diet
Intra-Abdominal Fat - cytology
Intra-Abdominal Fat - drug effects
Intra-Abdominal Fat - metabolism
Ion Channels - genetics
Ion Channels - metabolism
Leptin - blood
Leptin - genetics
Leptin - metabolism
Leptin expression
Life Sciences
Lipidology
Lipids
Lipids - analysis
Lipolysis - drug effects
Male
Medical Biochemistry
Medicinal Chemistry
Metabolic disorders
Metabolism
Microbial Genetics and Genomics
Mitochondrial Proteins - genetics
Mitochondrial Proteins - metabolism
Neurochemistry
Nutrition
Obesity
Original
Original Article
Physical Conditioning, Animal
Radioimmunoassay
Rats
Rats, Wistar
Receptors, Leptin - genetics
Receptors, Leptin - metabolism
Reverse Transcriptase Polymerase Chain Reaction
Sugar
Time Factors
Training
Uncoupling Protein 2
title Endurance Training Increases Leptin Expression in the Retroperitoneal Adipose Tissue of Rats Fed with a High-Sugar Diet
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