{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360846641908502528.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1053/j.gastro.2012.10.035"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S001650851201551X?httpAccept=text/xml"}},{"identifier":{"@type":"URI","@value":"https://api.elsevier.com/content/article/PII:S001650851201551X?httpAccept=text/plain"}},{"identifier":{"@type":"PMID","@value":"23089202"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Loss of Claudins 2 and 15 From Mice Causes Defects in Paracellular Na+ Flow and Nutrient Transport in Gut and Leads to Death from Malnutrition"}],"description":[{"notation":[{"@value":"The intestinal symport system moves nutrients across membranes via transporters, and is required for absorption of major nutrients such as glucose, amino acids, and bile acids (which are required for fat absorption). Most of these transporters are regulated by Na(+), but the standard diet does not provide sufficient levels of this ion to the intestinal lumen to support this system. Claudins form paracellular barriers between epithelial cells, and claudin-2 and -15 regulate paracellular ion flow in the intestine. We investigated how cell adherence, tight junction barriers, and claudins regulate the supply of Na(+) to the intestinal lumen in mice.We created Cldn2(-/-)Cldn15(-/-) (double-knockout) mice and analyzed intestinal tissues by reverse-transcription polymerase chain reaction, immunoblot, immunofluorescence, electron microscopy, and HE analyses. We also measured paracellular Na(+) flow, luminal Na(+) concentration, and absorption of glucose, amino acids, and fats, which were administered orally to the mice.Paracellular flow of Na(+) from the intestinal submucosa to the lumen, and therefore the concentration of Na(+) in the lumen, was greatly reduced in intestines of Cldn2(-/-)Cldn15(-/-) mice. Absorption of glucose, amino acids, and fats also decreased in the mice, which died by postnatal day 25 from malnutrition.The paracellular flow of Na(+) from the intestinal submucosa is regulated by tight junctions that contain claudin-2 and -15. This system is required for the absorption of glucose, amino acids, and fats; disruption of this system in mice leads to infant death as a result of malabsorption."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380003445172753024","@type":"Researcher","foaf:name":[{"@value":"Masami Wada"}]},{"@id":"https://cir.nii.ac.jp/crid/1420564276158419584","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"00362525"},{"@type":"NRID","@value":"1000000362525"},{"@type":"NRID","@value":"9000413699808"},{"@type":"NRID","@value":"9000359873707"},{"@type":"NRID","@value":"9000005828860"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/atsu-"}],"foaf:name":[{"@value":"Atsushi Tamura"}]},{"@id":"https://cir.nii.ac.jp/crid/1420282801209390464","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"50370135"},{"@type":"NRID","@value":"1000050370135"},{"@type":"NRID","@value":"9000002682199"}],"foaf:name":[{"@value":"Nobuyuki Takahashi"}]},{"@id":"https://cir.nii.ac.jp/crid/1420001326215706624","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"00188517"},{"@type":"NRID","@value":"1000000188517"},{"@type":"NRID","@value":"9000413699813"},{"@type":"NRID","@value":"9000370278469"},{"@type":"NRID","@value":"9000253019548"},{"@type":"NRID","@value":"9000253163008"},{"@type":"NRID","@value":"9000391634253"},{"@type":"NRID","@value":"9000253020267"},{"@type":"NRID","@value":"9000020702650"},{"@type":"NRID","@value":"9000253106787"},{"@type":"NRID","@value":"9000253106881"},{"@type":"NRID","@value":"9000391612616"},{"@type":"NRID","@value":"9000321630049"},{"@type":"NRID","@value":"9000370745342"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/TightJunctionClaudin"}],"foaf:name":[{"@value":"Sachiko Tsukita"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00165085"}],"prism:publicationName":[{"@value":"Gastroenterology"}],"dc:publisher":[{"@value":"Elsevier BV"}],"prism:publicationDate":"2013-02","prism:volume":"144","prism:number":"2","prism:startingPage":"369","prism:endingPage":"380"},"reviewed":"false","dc:rights":["https://www.elsevier.com/tdm/userlicense/1.0/","https://www.elsevier.com/legal/tdmrep-license"],"url":[{"@id":"https://api.elsevier.com/content/article/PII:S001650851201551X?httpAccept=text/xml"},{"@id":"https://api.elsevier.com/content/article/PII:S001650851201551X?httpAccept=text/plain"}],"createdAt":"2012-10-23","modifiedAt":"2025-09-16","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Cell%20Membrane%20Permeability","dc:title":"Cell Membrane Permeability"},{"@id":"https://cir.nii.ac.jp/all?q=Immunoblotting","dc:title":"Immunoblotting"},{"@id":"https://cir.nii.ac.jp/all?q=Real-Time%20Polymerase%20Chain%20Reaction","dc:title":"Real-Time Polymerase Chain Reaction"},{"@id":"https://cir.nii.ac.jp/all?q=Tight%20Junctions","dc:title":"Tight Junctions"},{"@id":"https://cir.nii.ac.jp/all?q=Fats","dc:title":"Fats"},{"@id":"https://cir.nii.ac.jp/all?q=Mice","dc:title":"Mice"},{"@id":"https://cir.nii.ac.jp/all?q=Intestine,%20Small","dc:title":"Intestine, Small"},{"@id":"https://cir.nii.ac.jp/all?q=Animals","dc:title":"Animals"},{"@id":"https://cir.nii.ac.jp/all?q=Claudin-2","dc:title":"Claudin-2"},{"@id":"https://cir.nii.ac.jp/all?q=Amino%20Acids","dc:title":"Amino Acids"},{"@id":"https://cir.nii.ac.jp/all?q=Intestinal%20Mucosa","dc:title":"Intestinal Mucosa"},{"@id":"https://cir.nii.ac.jp/all?q=Mice,%20Knockout","dc:title":"Mice, Knockout"},{"@id":"https://cir.nii.ac.jp/all?q=Cell%20Membrane","dc:title":"Cell Membrane"},{"@id":"https://cir.nii.ac.jp/all?q=Malnutrition","dc:title":"Malnutrition"},{"@id":"https://cir.nii.ac.jp/all?q=Sodium","dc:title":"Sodium"},{"@id":"https://cir.nii.ac.jp/all?q=Biological%20Transport","dc:title":"Biological Transport"},{"@id":"https://cir.nii.ac.jp/all?q=Epithelial%20Cells","dc:title":"Epithelial Cells"},{"@id":"https://cir.nii.ac.jp/all?q=Disease%20Models,%20Animal","dc:title":"Disease Models, Animal"},{"@id":"https://cir.nii.ac.jp/all?q=Microscopy,%20Electron","dc:title":"Microscopy, Electron"},{"@id":"https://cir.nii.ac.jp/all?q=Glucose","dc:title":"Glucose"},{"@id":"https://cir.nii.ac.jp/all?q=Phenotype","dc:title":"Phenotype"},{"@id":"https://cir.nii.ac.jp/all?q=Intestinal%20Absorption","dc:title":"Intestinal Absorption"},{"@id":"https://cir.nii.ac.jp/all?q=Microscopy,%20Fluorescence","dc:title":"Microscopy, Fluorescence"},{"@id":"https://cir.nii.ac.jp/all?q=Claudins","dc:title":"Claudins"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040000782111789568","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"22380075"},{"@type":"JGN","@value":"JP22380075"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22380075/"}],"notation":[{"@language":"ja","@value":"生体内への脂質取込を制御する腸管上皮組織の脂質代謝メカニズムの解明"},{"@language":"en","@value":"Analysis of intestinal lipid metabolism involved in the regulation for dietary lipid uptake."}]},{"@id":"https://cir.nii.ac.jp/crid/1040000782165371008","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"23590334"},{"@type":"JGN","@value":"JP23590334"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23590334/"}],"notation":[{"@language":"ja","@value":"イオン勾配に依存した栄養吸収"},{"@language":"en","@value":"Electrolytes gradient dependent nutritional 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