Recambio óseo en nodrizas adolescentes: evaluación al término de la gestación, lactancia y postdestete

Background: There is paucity of information about bone metabolism during pregnancy or breast feeding in teenagers. Aim: To study bone turnover at the end of pregnancy and during breast feeding in teenagers and correlate it with environmental, hormonal or nutritional variables. Subjects and methods:...

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Autores principales:	Cattani O,Andreina, Zubarew G,Tamara, Maddaleno H,Matilde, Mosso G,Lorena, López M,José Manuel
Lenguaje:	Spanish / Castilian
Publicado:	Sociedad Médica de Santiago 2000
Materias:	Bone demineralization, pathologic Lactation Osteoporosis Pregnancy in adolescence
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872000000200003
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spelling	oai:scielo:S0034-988720000002000032014-05-06Recambio óseo en nodrizas adolescentes: evaluación al término de la gestación, lactancia y postdesteteCattani O,AndreinaZubarew G,TamaraMaddaleno H,MatildeMosso G,LorenaLópez M,José Manuel Bone demineralization, pathologic Lactation Osteoporosis Pregnancy in adolescence Background: There is paucity of information about bone metabolism during pregnancy or breast feeding in teenagers. Aim: To study bone turnover at the end of pregnancy and during breast feeding in teenagers and correlate it with environmental, hormonal or nutritional variables. Subjects and methods: Thirty teenagers during their breast feeding period after a first pregnancy and 30 nulliparous girls matched for age, age of menarche and body mass index were assessed three weeks after delivery (period 1), at six months of breast feeding (period 2) and one year after the lactating period (period 3). Calcium intake and plasma calcium, phosphorus, alkaline phosphatases, parathormone, estradiol and prolactin were measured. Calcium, creatinine and hydroxyproline were also measured in a morning urine sample. Results: Lactating and control girls were aged 16.3±0.8 and 16.1±0.7 years old respectively. Calcium intake in lactating and control girls was 798±421 and 640±346 g/day respectively in period 1, 612±352 and 592±309 mg/day in period 2 and 495±180 and 456±157 g/day in period 3. During periods 1 and 2, lactating girls had higher alkaline phosphatases (161±37 compared to 119±28 U/l and 149±37 compared to 106±23 U/l), parathormone (4.3±2.6 compared to 2.8±0.8 ng/dl and 3.6±1.6 compared to 3.0±0.9 ng/dl) and urinary hydroxyproline (95±16 compared to 63±15 mg/g creatinine and 84±19 compared to 59±15 mg/g creatinine). No differences were observed in period 3. No correlation between bone turnover variables, body mass index or hormonal parameters, was observed. Conclusions: In teenagers, there is an increase in bone turnover at the end of pregnancy, that persists during the lactating period. These changes are not related to nutritional or hormonal variables.info:eu-repo/semantics/openAccessSociedad Médica de SantiagoRevista médica de Chile v.128 n.2 20002000-02-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872000000200003es10.4067/S0034-98872000000200003
institution	Scielo Chile
collection	Scielo Chile
language	Spanish / Castilian
topic	Bone demineralization, pathologic Lactation Osteoporosis Pregnancy in adolescence
spellingShingle	Bone demineralization, pathologic Lactation Osteoporosis Pregnancy in adolescence Cattani O,Andreina Zubarew G,Tamara Maddaleno H,Matilde Mosso G,Lorena López M,José Manuel Recambio óseo en nodrizas adolescentes: evaluación al término de la gestación, lactancia y postdestete
description	Background: There is paucity of information about bone metabolism during pregnancy or breast feeding in teenagers. Aim: To study bone turnover at the end of pregnancy and during breast feeding in teenagers and correlate it with environmental, hormonal or nutritional variables. Subjects and methods: Thirty teenagers during their breast feeding period after a first pregnancy and 30 nulliparous girls matched for age, age of menarche and body mass index were assessed three weeks after delivery (period 1), at six months of breast feeding (period 2) and one year after the lactating period (period 3). Calcium intake and plasma calcium, phosphorus, alkaline phosphatases, parathormone, estradiol and prolactin were measured. Calcium, creatinine and hydroxyproline were also measured in a morning urine sample. Results: Lactating and control girls were aged 16.3±0.8 and 16.1±0.7 years old respectively. Calcium intake in lactating and control girls was 798±421 and 640±346 g/day respectively in period 1, 612±352 and 592±309 mg/day in period 2 and 495±180 and 456±157 g/day in period 3. During periods 1 and 2, lactating girls had higher alkaline phosphatases (161±37 compared to 119±28 U/l and 149±37 compared to 106±23 U/l), parathormone (4.3±2.6 compared to 2.8±0.8 ng/dl and 3.6±1.6 compared to 3.0±0.9 ng/dl) and urinary hydroxyproline (95±16 compared to 63±15 mg/g creatinine and 84±19 compared to 59±15 mg/g creatinine). No differences were observed in period 3. No correlation between bone turnover variables, body mass index or hormonal parameters, was observed. Conclusions: In teenagers, there is an increase in bone turnover at the end of pregnancy, that persists during the lactating period. These changes are not related to nutritional or hormonal variables.
author	Cattani O,Andreina Zubarew G,Tamara Maddaleno H,Matilde Mosso G,Lorena López M,José Manuel
author_facet	Cattani O,Andreina Zubarew G,Tamara Maddaleno H,Matilde Mosso G,Lorena López M,José Manuel
author_sort	Cattani O,Andreina
title	Recambio óseo en nodrizas adolescentes: evaluación al término de la gestación, lactancia y postdestete
title_short	Recambio óseo en nodrizas adolescentes: evaluación al término de la gestación, lactancia y postdestete
title_full	Recambio óseo en nodrizas adolescentes: evaluación al término de la gestación, lactancia y postdestete
title_fullStr	Recambio óseo en nodrizas adolescentes: evaluación al término de la gestación, lactancia y postdestete
title_full_unstemmed	Recambio óseo en nodrizas adolescentes: evaluación al término de la gestación, lactancia y postdestete
title_sort	recambio óseo en nodrizas adolescentes: evaluación al término de la gestación, lactancia y postdestete
publisher	Sociedad Médica de Santiago
publishDate	2000
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872000000200003
work_keys_str_mv	AT cattanioandreina recambiooseoennodrizasadolescentesevaluacionalterminodelagestacionlactanciaypostdestete AT zubarewgtamara recambiooseoennodrizasadolescentesevaluacionalterminodelagestacionlactanciaypostdestete AT maddalenohmatilde recambiooseoennodrizasadolescentesevaluacionalterminodelagestacionlactanciaypostdestete AT mossoglorena recambiooseoennodrizasadolescentesevaluacionalterminodelagestacionlactanciaypostdestete AT lopezmjosemanuel recambiooseoennodrizasadolescentesevaluacionalterminodelagestacionlactanciaypostdestete
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Recambio óseo en nodrizas adolescentes: evaluación al término de la gestación, lactancia y postdestete

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