A maternal diet rich in fish oil may improve cardiac Akt-related signaling in the offspring of diabetic mother rats

Abstract Objective Newborns of diabetic mothers have abnormal circulatory organs, so in this study, we explore insulin signaling in the newborn rat heart. Methods Pregnant rats were divided into streptozotocin-induced diabetic groups (DM) and control groups (CM). Rats were fed lard (21% fat), fish o...

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Veröffentlicht in:Nutrition (Burbank, Los Angeles County, Calif.) Los Angeles County, Calif.), 2013-04, Vol.29 (4), p.688-692
Hauptverfasser: Nasu-Kawaharada, Ritsuko, Ph.D, Nakamura, Akio, Ph.D, Kakarla, Sunil K., Ph.D, Blough, Eric R., Ph.D, Kohama, Kazuhiro, M.D., Ph.D, Kohama, Tomoko, M.D., Ph.D
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container_issue 4
container_start_page 688
container_title Nutrition (Burbank, Los Angeles County, Calif.)
container_volume 29
creator Nasu-Kawaharada, Ritsuko, Ph.D
Nakamura, Akio, Ph.D
Kakarla, Sunil K., Ph.D
Blough, Eric R., Ph.D
Kohama, Kazuhiro, M.D., Ph.D
Kohama, Tomoko, M.D., Ph.D
description Abstract Objective Newborns of diabetic mothers have abnormal circulatory organs, so in this study, we explore insulin signaling in the newborn rat heart. Methods Pregnant rats were divided into streptozotocin-induced diabetic groups (DM) and control groups (CM). Rats were fed lard (21% fat), fish oil (21% fat), or a control diet (7% fat). To examine changes in insulin signaling in the hearts of infants of diabetic mothers (IDM) in relation to diet, we isolated the hearts from the IDM and control infants and determined the phosphorylation levels of Akt308, Akt473, p38, c-jun-NH2-terminal protein kinase (JNK), and extracellular signal-regulated protein kinase (ERK), and the expression levels of phosphoinositide-dependent protein kainase1 (PDK1) and mammalian target of rapamycin (mTOR). Results The mean blood glucose levels in the DM group and their infants were significantly higher than those in the CM group ( P < 0.05) and their infants ( P < 0.05), but the mean blood glucose levels of all infants was normal on postnatal d 4. Phosphorylation levels of AktThr 308 ( P < 0.05) and AktSer 473 and the expression levels of PDK1 and mTOR were lower in infants of diabetic mothers (IDM) than in control infants. The phosphorylation level of AktSer 473 and the expression level of mTOR increased in IDM fed the fish oil diet compared with those fed the lard diet ( P < 0.05). Conclusion A maternal diet rich in fish oil improves cardiac Akt-related signaling in the offspring of diabetic rats.
doi_str_mv 10.1016/j.nut.2012.11.017
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Methods Pregnant rats were divided into streptozotocin-induced diabetic groups (DM) and control groups (CM). Rats were fed lard (21% fat), fish oil (21% fat), or a control diet (7% fat). To examine changes in insulin signaling in the hearts of infants of diabetic mothers (IDM) in relation to diet, we isolated the hearts from the IDM and control infants and determined the phosphorylation levels of Akt308, Akt473, p38, c-jun-NH2-terminal protein kinase (JNK), and extracellular signal-regulated protein kinase (ERK), and the expression levels of phosphoinositide-dependent protein kainase1 (PDK1) and mammalian target of rapamycin (mTOR). Results The mean blood glucose levels in the DM group and their infants were significantly higher than those in the CM group ( P &lt; 0.05) and their infants ( P &lt; 0.05), but the mean blood glucose levels of all infants was normal on postnatal d 4. Phosphorylation levels of AktThr 308 ( P &lt; 0.05) and AktSer 473 and the expression levels of PDK1 and mTOR were lower in infants of diabetic mothers (IDM) than in control infants. The phosphorylation level of AktSer 473 and the expression level of mTOR increased in IDM fed the fish oil diet compared with those fed the lard diet ( P &lt; 0.05). Conclusion A maternal diet rich in fish oil improves cardiac Akt-related signaling in the offspring of diabetic rats.</description><identifier>ISSN: 0899-9007</identifier><identifier>EISSN: 1873-1244</identifier><identifier>DOI: 10.1016/j.nut.2012.11.017</identifier><identifier>PMID: 23466053</identifier><identifier>CODEN: NUTRER</identifier><language>eng</language><publisher>New York, NY: Elsevier Inc</publisher><subject>Animals ; Animals, Newborn ; Biological and medical sciences ; Blood ; Diabetes ; Diabetes. Impaired glucose tolerance ; Diabetic mother ; Diet ; Diet, High-Fat - adverse effects ; Endocrine pancreas. Apud cells (diseases) ; Endocrinopathies ; Etiopathogenesis. Screening. Investigations. Target tissue resistance ; Feeding. Feeding behavior ; Female ; Fish oil ; Fish oils ; Fish Oils - adverse effects ; Fish Oils - therapeutic use ; Fundamental and applied biological sciences. Psychology ; Gastroenterology and Hepatology ; Glucose ; Heart ; Hyperglycemia - congenital ; Hyperglycemia - prevention &amp; control ; Hypertriglyceridemia - complications ; Hypertriglyceridemia - congenital ; Hypertriglyceridemia - prevention &amp; control ; Hypoglycemic Agents - adverse effects ; Hypoglycemic Agents - therapeutic use ; Infants ; Insulin ; Insulin signaling ; Kinases ; MAP kinase signaling ; MAP Kinase Signaling System ; Maternal Nutritional Physiological Phenomena ; Medical sciences ; Myometrium - metabolism ; Offspring ; Phosphorylation ; Prediabetic State - complications ; Prediabetic State - congenital ; Prediabetic State - metabolism ; Prediabetic State - prevention &amp; control ; Pregnancy ; Pregnancy in Diabetics - blood ; Pregnancy in Diabetics - diet therapy ; Protein Processing, Post-Translational ; Proteins ; Proto-Oncogene Proteins c-akt - metabolism ; Rats ; Rodents ; Serine - metabolism ; Threonine - metabolism ; Vertebrates: anatomy and physiology, studies on body, several organs or systems</subject><ispartof>Nutrition (Burbank, Los Angeles County, Calif.), 2013-04, Vol.29 (4), p.688-692</ispartof><rights>Elsevier Inc.</rights><rights>2013 Elsevier Inc.</rights><rights>2014 INIST-CNRS</rights><rights>Copyright © 2013 Elsevier Inc. All rights reserved.</rights><rights>Copyright Elsevier Limited Apr 2013</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c565t-67909630bbc8c21780a341671daa17271bcd14044fa96f4df266a821aadaea3f3</citedby><cites>FETCH-LOGICAL-c565t-67909630bbc8c21780a341671daa17271bcd14044fa96f4df266a821aadaea3f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.proquest.com/docview/1315210403?pq-origsite=primo$$EHTML$$P50$$Gproquest$$H</linktohtml><link.rule.ids>314,778,782,3539,27907,27908,45978,64366,64368,64370,72220</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=27220539$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23466053$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Nasu-Kawaharada, Ritsuko, Ph.D</creatorcontrib><creatorcontrib>Nakamura, Akio, Ph.D</creatorcontrib><creatorcontrib>Kakarla, Sunil K., Ph.D</creatorcontrib><creatorcontrib>Blough, Eric R., Ph.D</creatorcontrib><creatorcontrib>Kohama, Kazuhiro, M.D., Ph.D</creatorcontrib><creatorcontrib>Kohama, Tomoko, M.D., Ph.D</creatorcontrib><title>A maternal diet rich in fish oil may improve cardiac Akt-related signaling in the offspring of diabetic mother rats</title><title>Nutrition (Burbank, Los Angeles County, Calif.)</title><addtitle>Nutrition</addtitle><description>Abstract Objective Newborns of diabetic mothers have abnormal circulatory organs, so in this study, we explore insulin signaling in the newborn rat heart. Methods Pregnant rats were divided into streptozotocin-induced diabetic groups (DM) and control groups (CM). Rats were fed lard (21% fat), fish oil (21% fat), or a control diet (7% fat). To examine changes in insulin signaling in the hearts of infants of diabetic mothers (IDM) in relation to diet, we isolated the hearts from the IDM and control infants and determined the phosphorylation levels of Akt308, Akt473, p38, c-jun-NH2-terminal protein kinase (JNK), and extracellular signal-regulated protein kinase (ERK), and the expression levels of phosphoinositide-dependent protein kainase1 (PDK1) and mammalian target of rapamycin (mTOR). Results The mean blood glucose levels in the DM group and their infants were significantly higher than those in the CM group ( P &lt; 0.05) and their infants ( P &lt; 0.05), but the mean blood glucose levels of all infants was normal on postnatal d 4. Phosphorylation levels of AktThr 308 ( P &lt; 0.05) and AktSer 473 and the expression levels of PDK1 and mTOR were lower in infants of diabetic mothers (IDM) than in control infants. The phosphorylation level of AktSer 473 and the expression level of mTOR increased in IDM fed the fish oil diet compared with those fed the lard diet ( P &lt; 0.05). Conclusion A maternal diet rich in fish oil improves cardiac Akt-related signaling in the offspring of diabetic rats.</description><subject>Animals</subject><subject>Animals, Newborn</subject><subject>Biological and medical sciences</subject><subject>Blood</subject><subject>Diabetes</subject><subject>Diabetes. Impaired glucose tolerance</subject><subject>Diabetic mother</subject><subject>Diet</subject><subject>Diet, High-Fat - adverse effects</subject><subject>Endocrine pancreas. Apud cells (diseases)</subject><subject>Endocrinopathies</subject><subject>Etiopathogenesis. Screening. Investigations. Target tissue resistance</subject><subject>Feeding. Feeding behavior</subject><subject>Female</subject><subject>Fish oil</subject><subject>Fish oils</subject><subject>Fish Oils - adverse effects</subject><subject>Fish Oils - therapeutic use</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Gastroenterology and Hepatology</subject><subject>Glucose</subject><subject>Heart</subject><subject>Hyperglycemia - congenital</subject><subject>Hyperglycemia - prevention &amp; control</subject><subject>Hypertriglyceridemia - complications</subject><subject>Hypertriglyceridemia - congenital</subject><subject>Hypertriglyceridemia - prevention &amp; control</subject><subject>Hypoglycemic Agents - adverse effects</subject><subject>Hypoglycemic Agents - therapeutic use</subject><subject>Infants</subject><subject>Insulin</subject><subject>Insulin signaling</subject><subject>Kinases</subject><subject>MAP kinase signaling</subject><subject>MAP Kinase Signaling System</subject><subject>Maternal Nutritional Physiological Phenomena</subject><subject>Medical sciences</subject><subject>Myometrium - metabolism</subject><subject>Offspring</subject><subject>Phosphorylation</subject><subject>Prediabetic State - complications</subject><subject>Prediabetic State - congenital</subject><subject>Prediabetic State - metabolism</subject><subject>Prediabetic State - prevention &amp; 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Nakamura, Akio, Ph.D ; Kakarla, Sunil K., Ph.D ; Blough, Eric R., Ph.D ; Kohama, Kazuhiro, M.D., Ph.D ; Kohama, Tomoko, M.D., Ph.D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c565t-67909630bbc8c21780a341671daa17271bcd14044fa96f4df266a821aadaea3f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Animals</topic><topic>Animals, Newborn</topic><topic>Biological and medical sciences</topic><topic>Blood</topic><topic>Diabetes</topic><topic>Diabetes. Impaired glucose tolerance</topic><topic>Diabetic mother</topic><topic>Diet</topic><topic>Diet, High-Fat - adverse effects</topic><topic>Endocrine pancreas. Apud cells (diseases)</topic><topic>Endocrinopathies</topic><topic>Etiopathogenesis. Screening. Investigations. Target tissue resistance</topic><topic>Feeding. Feeding behavior</topic><topic>Female</topic><topic>Fish oil</topic><topic>Fish oils</topic><topic>Fish Oils - adverse effects</topic><topic>Fish Oils - therapeutic use</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Gastroenterology and Hepatology</topic><topic>Glucose</topic><topic>Heart</topic><topic>Hyperglycemia - congenital</topic><topic>Hyperglycemia - prevention &amp; control</topic><topic>Hypertriglyceridemia - complications</topic><topic>Hypertriglyceridemia - congenital</topic><topic>Hypertriglyceridemia - prevention &amp; control</topic><topic>Hypoglycemic Agents - adverse effects</topic><topic>Hypoglycemic Agents - therapeutic use</topic><topic>Infants</topic><topic>Insulin</topic><topic>Insulin signaling</topic><topic>Kinases</topic><topic>MAP kinase signaling</topic><topic>MAP Kinase Signaling System</topic><topic>Maternal Nutritional Physiological Phenomena</topic><topic>Medical sciences</topic><topic>Myometrium - metabolism</topic><topic>Offspring</topic><topic>Phosphorylation</topic><topic>Prediabetic State - complications</topic><topic>Prediabetic State - congenital</topic><topic>Prediabetic State - metabolism</topic><topic>Prediabetic State - prevention &amp; 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Fisheries Abstracts (ASFA) Professional</collection><jtitle>Nutrition (Burbank, Los Angeles County, Calif.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nasu-Kawaharada, Ritsuko, Ph.D</au><au>Nakamura, Akio, Ph.D</au><au>Kakarla, Sunil K., Ph.D</au><au>Blough, Eric R., Ph.D</au><au>Kohama, Kazuhiro, M.D., Ph.D</au><au>Kohama, Tomoko, M.D., Ph.D</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A maternal diet rich in fish oil may improve cardiac Akt-related signaling in the offspring of diabetic mother rats</atitle><jtitle>Nutrition (Burbank, Los Angeles County, Calif.)</jtitle><addtitle>Nutrition</addtitle><date>2013-04-01</date><risdate>2013</risdate><volume>29</volume><issue>4</issue><spage>688</spage><epage>692</epage><pages>688-692</pages><issn>0899-9007</issn><eissn>1873-1244</eissn><coden>NUTRER</coden><abstract>Abstract Objective Newborns of diabetic mothers have abnormal circulatory organs, so in this study, we explore insulin signaling in the newborn rat heart. Methods Pregnant rats were divided into streptozotocin-induced diabetic groups (DM) and control groups (CM). Rats were fed lard (21% fat), fish oil (21% fat), or a control diet (7% fat). To examine changes in insulin signaling in the hearts of infants of diabetic mothers (IDM) in relation to diet, we isolated the hearts from the IDM and control infants and determined the phosphorylation levels of Akt308, Akt473, p38, c-jun-NH2-terminal protein kinase (JNK), and extracellular signal-regulated protein kinase (ERK), and the expression levels of phosphoinositide-dependent protein kainase1 (PDK1) and mammalian target of rapamycin (mTOR). Results The mean blood glucose levels in the DM group and their infants were significantly higher than those in the CM group ( P &lt; 0.05) and their infants ( P &lt; 0.05), but the mean blood glucose levels of all infants was normal on postnatal d 4. Phosphorylation levels of AktThr 308 ( P &lt; 0.05) and AktSer 473 and the expression levels of PDK1 and mTOR were lower in infants of diabetic mothers (IDM) than in control infants. The phosphorylation level of AktSer 473 and the expression level of mTOR increased in IDM fed the fish oil diet compared with those fed the lard diet ( P &lt; 0.05). Conclusion A maternal diet rich in fish oil improves cardiac Akt-related signaling in the offspring of diabetic rats.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>23466053</pmid><doi>10.1016/j.nut.2012.11.017</doi><tpages>5</tpages></addata></record>
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1873-1244
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source MEDLINE; Elsevier ScienceDirect Journals; ProQuest Central UK/Ireland
subjects Animals
Animals, Newborn
Biological and medical sciences
Blood
Diabetes
Diabetes. Impaired glucose tolerance
Diabetic mother
Diet
Diet, High-Fat - adverse effects
Endocrine pancreas. Apud cells (diseases)
Endocrinopathies
Etiopathogenesis. Screening. Investigations. Target tissue resistance
Feeding. Feeding behavior
Female
Fish oil
Fish oils
Fish Oils - adverse effects
Fish Oils - therapeutic use
Fundamental and applied biological sciences. Psychology
Gastroenterology and Hepatology
Glucose
Heart
Hyperglycemia - congenital
Hyperglycemia - prevention & control
Hypertriglyceridemia - complications
Hypertriglyceridemia - congenital
Hypertriglyceridemia - prevention & control
Hypoglycemic Agents - adverse effects
Hypoglycemic Agents - therapeutic use
Infants
Insulin
Insulin signaling
Kinases
MAP kinase signaling
MAP Kinase Signaling System
Maternal Nutritional Physiological Phenomena
Medical sciences
Myometrium - metabolism
Offspring
Phosphorylation
Prediabetic State - complications
Prediabetic State - congenital
Prediabetic State - metabolism
Prediabetic State - prevention & control
Pregnancy
Pregnancy in Diabetics - blood
Pregnancy in Diabetics - diet therapy
Protein Processing, Post-Translational
Proteins
Proto-Oncogene Proteins c-akt - metabolism
Rats
Rodents
Serine - metabolism
Threonine - metabolism
Vertebrates: anatomy and physiology, studies on body, several organs or systems
title A maternal diet rich in fish oil may improve cardiac Akt-related signaling in the offspring of diabetic mother rats
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