Reference ranges for erythrocyte pyridoxal 5′-phosphate concentration and the erythrocyte aspartate transaminase stimulation test in lactating mothers and their infants
We determined reference ranges for erythrocyte pyridoxal 5′-phosphate concentrations (EPLP) and erythrocyte aspartate transaminase basal activities (EASTo) and activation coefficients (αEAST) in lactating mothers and infants from data of mothers receiving a vitamin B-6 supplement and infants breast-...
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| Veröffentlicht in: | The American journal of clinical nutrition 1994-06, Vol.59 (6), p.1297-1303 |
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| creator | Heiskanen, K Siimes, MA Perheentupa, J Salmenperä, L |
| description | We determined reference ranges for erythrocyte pyridoxal 5′-phosphate concentrations (EPLP) and erythrocyte aspartate transaminase basal activities (EASTo) and activation coefficients (αEAST) in lactating mothers and infants from data of mothers receiving a vitamin B-6 supplement and infants breast-fed by mothers with adequate vitamin B6 status. The mothers' vitamin B6 status was assessed on the third day postpartum (pp) (n = 91) and at 2 mo (n = 114), 4 mo (n = 117), 6 mo (n = 110), and 9 mo (n = 40) pp and that of the exclusively breast-fed infants at 2 mo (n = 90), 4 mo (n = 106), and 6 mo (n = 99). We also examined 9-mo-old infants (n = 39) who, besides breast milk, had received solids after 6 mo, and 12-mo-old infants (n = 100) who had received solids beginning at 4–6 mo and dairy products at 9 mo. Values indicating deficiency for at least two of the three indexes distinguished the 5–10% of mothers and infants with the lowest vitamin B6 status. The reference ranges for EPLP, EASTo, and αEAST for infants and for mothers during the first months of lactation differ from those reported earlier for adults. |
| doi_str_mv | 10.1093/ajcn/59.6.1297 |
| format | Article |
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The mothers' vitamin B6 status was assessed on the third day postpartum (pp) (n = 91) and at 2 mo (n = 114), 4 mo (n = 117), 6 mo (n = 110), and 9 mo (n = 40) pp and that of the exclusively breast-fed infants at 2 mo (n = 90), 4 mo (n = 106), and 6 mo (n = 99). We also examined 9-mo-old infants (n = 39) who, besides breast milk, had received solids after 6 mo, and 12-mo-old infants (n = 100) who had received solids beginning at 4–6 mo and dairy products at 9 mo. Values indicating deficiency for at least two of the three indexes distinguished the 5–10% of mothers and infants with the lowest vitamin B6 status. The reference ranges for EPLP, EASTo, and αEAST for infants and for mothers during the first months of lactation differ from those reported earlier for adults.</description><identifier>ISSN: 0002-9165</identifier><identifier>EISSN: 1938-3207</identifier><identifier>DOI: 10.1093/ajcn/59.6.1297</identifier><identifier>PMID: 8198054</identifier><identifier>CODEN: AJCNAC</identifier><language>eng</language><publisher>Bethesda, MD: Elsevier Inc</publisher><subject>ACTIVIDAD ENZIMATICA ; ACTIVITE ENZYMATIQUE ; ALIMENT POUR NOURRISSON ; ALIMENTOS PARA NINOS ; AMINOTRANSFERASAS ; AMINOTRANSFERASE ; Aspartate Aminotransferases - blood ; Babies ; BEBES ; Biological and medical sciences ; breast-feeding ; Breastfeeding & lactation ; COENZIMAS ; COENZYME ; DIETA ; ENFANT EN BAS AGE ; Erythrocytes ; Erythrocytes - metabolism ; ESTADO NUTRICIONAL ; ETAT NUTRITIONNEL ; Female ; FEMME ; Humans ; Infant ; Infant, Newborn ; infants ; LACTACION ; LACTATION ; Lactation - metabolism ; LAIT HUMAIN ; LECHE HUMANA ; MADRE ; Medical research ; Medical sciences ; MERE ; Metabolic diseases ; MUJERES ; NORMAS ; NORME ; Other nutritional diseases (malnutrition, nutritional and vitamin deficiencies...) ; pyridoxal 5′-phosphate ; Pyridoxal Phosphate - blood ; Pyridoxine - metabolism ; Reference Values ; REGIME ALIMENTAIRE ; Vitamin B ; vitamin B-6 status</subject><ispartof>The American journal of clinical nutrition, 1994-06, Vol.59 (6), p.1297-1303</ispartof><rights>1994 American Society for Nutrition.</rights><rights>1994 INIST-CNRS</rights><rights>Copyright American Society for Clinical Nutrition, Inc. 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The mothers' vitamin B6 status was assessed on the third day postpartum (pp) (n = 91) and at 2 mo (n = 114), 4 mo (n = 117), 6 mo (n = 110), and 9 mo (n = 40) pp and that of the exclusively breast-fed infants at 2 mo (n = 90), 4 mo (n = 106), and 6 mo (n = 99). We also examined 9-mo-old infants (n = 39) who, besides breast milk, had received solids after 6 mo, and 12-mo-old infants (n = 100) who had received solids beginning at 4–6 mo and dairy products at 9 mo. Values indicating deficiency for at least two of the three indexes distinguished the 5–10% of mothers and infants with the lowest vitamin B6 status. The reference ranges for EPLP, EASTo, and αEAST for infants and for mothers during the first months of lactation differ from those reported earlier for adults.</description><subject>ACTIVIDAD ENZIMATICA</subject><subject>ACTIVITE ENZYMATIQUE</subject><subject>ALIMENT POUR NOURRISSON</subject><subject>ALIMENTOS PARA NINOS</subject><subject>AMINOTRANSFERASAS</subject><subject>AMINOTRANSFERASE</subject><subject>Aspartate Aminotransferases - blood</subject><subject>Babies</subject><subject>BEBES</subject><subject>Biological and medical sciences</subject><subject>breast-feeding</subject><subject>Breastfeeding & lactation</subject><subject>COENZIMAS</subject><subject>COENZYME</subject><subject>DIETA</subject><subject>ENFANT EN BAS AGE</subject><subject>Erythrocytes</subject><subject>Erythrocytes - metabolism</subject><subject>ESTADO NUTRICIONAL</subject><subject>ETAT NUTRITIONNEL</subject><subject>Female</subject><subject>FEMME</subject><subject>Humans</subject><subject>Infant</subject><subject>Infant, Newborn</subject><subject>infants</subject><subject>LACTACION</subject><subject>LACTATION</subject><subject>Lactation - metabolism</subject><subject>LAIT HUMAIN</subject><subject>LECHE HUMANA</subject><subject>MADRE</subject><subject>Medical research</subject><subject>Medical sciences</subject><subject>MERE</subject><subject>Metabolic diseases</subject><subject>MUJERES</subject><subject>NORMAS</subject><subject>NORME</subject><subject>Other nutritional diseases (malnutrition, nutritional and vitamin deficiencies...)</subject><subject>pyridoxal 5′-phosphate</subject><subject>Pyridoxal Phosphate - blood</subject><subject>Pyridoxine - metabolism</subject><subject>Reference Values</subject><subject>REGIME ALIMENTAIRE</subject><subject>Vitamin B</subject><subject>vitamin B-6 status</subject><issn>0002-9165</issn><issn>1938-3207</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1ks2KFDEUhQtRxnZ060IQgoi76sl_VZbD4B8MCOqsw51U0p2mKimTtNg7n8elj-STmKLbAQVXWZzvHA73pGmeErwmWLEL2JlwIdRarglV3b1mRRTrW0Zxd79ZYYxpq4gUD5tHOe8wJpT38qw564nqseCr5sdH62yywViUIGxsRi4mZNOhbFM0h2LRfEh-iN9gROLX95_tvI153kIVTKyuUBIUHwOCMKCytX9ZIc-QysJWKmSYfIBsUS5-2o9HW7G5IB_QCKaCPmzQFGtMyn8Cfaqyg1Dy4-aBgzHbJ6f3vLl58_rz1bv2-sPb91eX163hgpdWcHADxgYwc9JQxTnlHVd0gH4AwQdGqWGDck5J6kQnKRB2SyXHshOEWcnOm1fH3DnFL_vaT08-GzuOEGzcZ91JQTohVQVf_APu4j6F2k1TRhTpKO4rtD5CJsWck3V6Tn6CdNAE62VBvSyohdJSLwtWw_NT6v52ssMdfpqs6i9POmQDo6uXNT7fYbxmcrWUe3bEHEQNm1SRm09KMM76JaM_irbe8au3SWfjl08w-GRN0UP0_6v3G8qhxLw</recordid><startdate>19940601</startdate><enddate>19940601</enddate><creator>Heiskanen, K</creator><creator>Siimes, MA</creator><creator>Perheentupa, J</creator><creator>Salmenperä, L</creator><general>Elsevier Inc</general><general>American Society for Clinical Nutrition</general><general>American Society for Clinical Nutrition, Inc</general><scope>FBQ</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QP</scope><scope>7T7</scope><scope>7TS</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>K9.</scope><scope>NAPCQ</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>19940601</creationdate><title>Reference ranges for erythrocyte pyridoxal 5′-phosphate concentration and the erythrocyte aspartate transaminase stimulation test in lactating mothers and their infants</title><author>Heiskanen, K ; Siimes, MA ; Perheentupa, J ; Salmenperä, L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c454t-54afd00ca03f6c2944247492da8da54d322c3d9ff962f5762a13b264067513e63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>ACTIVIDAD ENZIMATICA</topic><topic>ACTIVITE ENZYMATIQUE</topic><topic>ALIMENT POUR NOURRISSON</topic><topic>ALIMENTOS PARA NINOS</topic><topic>AMINOTRANSFERASAS</topic><topic>AMINOTRANSFERASE</topic><topic>Aspartate Aminotransferases - blood</topic><topic>Babies</topic><topic>BEBES</topic><topic>Biological and medical sciences</topic><topic>breast-feeding</topic><topic>Breastfeeding & lactation</topic><topic>COENZIMAS</topic><topic>COENZYME</topic><topic>DIETA</topic><topic>ENFANT EN BAS AGE</topic><topic>Erythrocytes</topic><topic>Erythrocytes - metabolism</topic><topic>ESTADO NUTRICIONAL</topic><topic>ETAT NUTRITIONNEL</topic><topic>Female</topic><topic>FEMME</topic><topic>Humans</topic><topic>Infant</topic><topic>Infant, Newborn</topic><topic>infants</topic><topic>LACTACION</topic><topic>LACTATION</topic><topic>Lactation - metabolism</topic><topic>LAIT HUMAIN</topic><topic>LECHE HUMANA</topic><topic>MADRE</topic><topic>Medical research</topic><topic>Medical sciences</topic><topic>MERE</topic><topic>Metabolic diseases</topic><topic>MUJERES</topic><topic>NORMAS</topic><topic>NORME</topic><topic>Other nutritional diseases (malnutrition, nutritional and vitamin deficiencies...)</topic><topic>pyridoxal 5′-phosphate</topic><topic>Pyridoxal Phosphate - blood</topic><topic>Pyridoxine - metabolism</topic><topic>Reference Values</topic><topic>REGIME ALIMENTAIRE</topic><topic>Vitamin B</topic><topic>vitamin B-6 status</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Heiskanen, K</creatorcontrib><creatorcontrib>Siimes, MA</creatorcontrib><creatorcontrib>Perheentupa, J</creatorcontrib><creatorcontrib>Salmenperä, L</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Physical Education Index</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Premium</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>The American journal of clinical nutrition</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Heiskanen, K</au><au>Siimes, MA</au><au>Perheentupa, J</au><au>Salmenperä, L</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reference ranges for erythrocyte pyridoxal 5′-phosphate concentration and the erythrocyte aspartate transaminase stimulation test in lactating mothers and their infants</atitle><jtitle>The American journal of clinical nutrition</jtitle><addtitle>Am J Clin Nutr</addtitle><date>1994-06-01</date><risdate>1994</risdate><volume>59</volume><issue>6</issue><spage>1297</spage><epage>1303</epage><pages>1297-1303</pages><issn>0002-9165</issn><eissn>1938-3207</eissn><coden>AJCNAC</coden><abstract>We determined reference ranges for erythrocyte pyridoxal 5′-phosphate concentrations (EPLP) and erythrocyte aspartate transaminase basal activities (EASTo) and activation coefficients (αEAST) in lactating mothers and infants from data of mothers receiving a vitamin B-6 supplement and infants breast-fed by mothers with adequate vitamin B6 status. The mothers' vitamin B6 status was assessed on the third day postpartum (pp) (n = 91) and at 2 mo (n = 114), 4 mo (n = 117), 6 mo (n = 110), and 9 mo (n = 40) pp and that of the exclusively breast-fed infants at 2 mo (n = 90), 4 mo (n = 106), and 6 mo (n = 99). We also examined 9-mo-old infants (n = 39) who, besides breast milk, had received solids after 6 mo, and 12-mo-old infants (n = 100) who had received solids beginning at 4–6 mo and dairy products at 9 mo. Values indicating deficiency for at least two of the three indexes distinguished the 5–10% of mothers and infants with the lowest vitamin B6 status. The reference ranges for EPLP, EASTo, and αEAST for infants and for mothers during the first months of lactation differ from those reported earlier for adults.</abstract><cop>Bethesda, MD</cop><pub>Elsevier Inc</pub><pmid>8198054</pmid><doi>10.1093/ajcn/59.6.1297</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | ACTIVIDAD ENZIMATICA ACTIVITE ENZYMATIQUE ALIMENT POUR NOURRISSON ALIMENTOS PARA NINOS AMINOTRANSFERASAS AMINOTRANSFERASE Aspartate Aminotransferases - blood Babies BEBES Biological and medical sciences breast-feeding Breastfeeding & lactation COENZIMAS COENZYME DIETA ENFANT EN BAS AGE Erythrocytes Erythrocytes - metabolism ESTADO NUTRICIONAL ETAT NUTRITIONNEL Female FEMME Humans Infant Infant, Newborn infants LACTACION LACTATION Lactation - metabolism LAIT HUMAIN LECHE HUMANA MADRE Medical research Medical sciences MERE Metabolic diseases MUJERES NORMAS NORME Other nutritional diseases (malnutrition, nutritional and vitamin deficiencies...) pyridoxal 5′-phosphate Pyridoxal Phosphate - blood Pyridoxine - metabolism Reference Values REGIME ALIMENTAIRE Vitamin B vitamin B-6 status |
| title | Reference ranges for erythrocyte pyridoxal 5′-phosphate concentration and the erythrocyte aspartate transaminase stimulation test in lactating mothers and their infants |
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