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Relationship between chronological and bone ages and pubertal stage of breasts with bone biomarkers and bone mineral density in adolescents / Relação entre as idades cronológica e óssea e o estágio puberal das mamas com os biomarcadores ósseos e a densidade mineral óssea em adolescentes
Fortes, Cristina Maria Teixeira; Goldberg, Tamara Beres Lederer; Kurokawa, Cilmery Suemi; Silva, Carla Cristiani; Moretto, Maria Regina; Biason, Talita Poli; Teixeira, Altamir Santos; Nunes, Hélio Rubens de Carvalho.
  • Fortes, Cristina Maria Teixeira; Universidade Estadual Paulista. Botucatu Medical School. Department of Pediatrics. Clinical and Experimental Pediatrics Research Center. São Paulo. BR
  • Goldberg, Tamara Beres Lederer; Universidade Estadual Paulista. Botucatu Medical School. Department of Pediatrics. Clinical and Experimental Pediatrics Research Center. São Paulo. BR
  • Kurokawa, Cilmery Suemi; Universidade Estadual Paulista. Botucatu Medical School. Department of Pediatrics. Clinical and Experimental Pediatrics Research Center. São Paulo. BR
  • Silva, Carla Cristiani; Universidade Estadual Paulista. Botucatu Medical School. Department of Pediatrics. Clinical and Experimental Pediatrics Research Center. São Paulo. BR
  • Moretto, Maria Regina; Universidade Estadual Paulista. Botucatu Medical School. Department of Pediatrics. Clinical and Experimental Pediatrics Research Center. São Paulo. BR
  • Biason, Talita Poli; Universidade Estadual Paulista. Botucatu Medical School. Department of Pediatrics. Clinical and Experimental Pediatrics Research Center. São Paulo. BR
  • Teixeira, Altamir Santos; Universidade Estadual Paulista. Botucatu Medical School. Department of Pediatrics. Clinical and Experimental Pediatrics Research Center. São Paulo. BR
  • Nunes, Hélio Rubens de Carvalho; Universidade Estadual Paulista. Botucatu Medical School. Department of Pediatrics. Clinical and Experimental Pediatrics Research Center. São Paulo. BR
J. pediatr. (Rio J.) ; 90(6): 624-631, Nov-Dec/2014. tab, graf
Article in English | LILACS | ID: lil-729835
ABSTRACT

OBJECTIVE:

To study bone mineral density (BMD) in adolescent females according to five groups of chronological age (CA), bone age (BA), and breast development stage (B), and to correlate these parameters with plasma bone biomarkers (BB).

METHODS:

This was a cross-sectional study performed in 101 healthy adolescent females between 10 and 20 years old. The study variables were weight, height, body mass index (BMI), CA, B, BA, calcium intake, BMD, and BB. Osteocalcin (OC), bone alkaline phosphatase (BAP), and C-terminal telopeptide (S-CTx) were evaluated for BB. BMD was measured using dual energy X-ray absorptiometry (DXA).

RESULTS:

BMD in lumbar spine, proximal femur, and total body increased with age, and the respective observed averages were in CA1 (10 years old), 0.631, 0.692, 0.798 g/cm2; in CA2 (11 to 12 years old), 0.698, 0.763, 0.840 g/cm2; in CA3 (13 to 14 years old), 0.865, 0.889, 0.972 g/cm2; in CA4 (15 to 16 years old), 0.902, 0.922, 1.013 g/cm2; and in CA5 (17 to 19 years old), 0.944, 0.929, 1.35 g/cm2. These results showed significant differences between 13 and 14 years of age (CA3) or when girls reached the B3 stage (0.709, 0.832, 0.867 g/cm2). The highest median concentrations of BB were between 10 and 12 years of age when adolescents were in the B2-B3 (p < 0.001). Median BB concentrations decreased in advanced BA and B.

CONCLUSIONS:

BB concentrations were positively correlated with the peak height velocity and negatively correlated with BMD in the study sites. Increased BMD and BB concentrations were observed in B3. .
RESUMO

OBJETIVO:

Avaliar a densidade mineral óssea (DMO) em adolescentes do sexo feminino de acordo com a idade cronológica (IC), idade óssea (IO) e desenvolvimento das mamas (M) e suas correlações com biomarcadores de remodelação óssea em plasma (BO).

MÉTODOS:

Este foi um estudo transversal prospectivo feito em 101 adolescentes saudáveis do sexo feminino com idade entre 10 e 20 anos. As variáveis estudadas foram peso, altura, índice de massa corpórea (IMC), IC, IO, M, ingestão de cálcio, DMO e BO. A osteocalcina (OC), fosfatase alcalina óssea (BAP) e o telopeptídeo C terminal (S-CTx) foram os biomarcadores de remodelação óssea avaliados. A DMO foi obtida por absorciometria de raios-X de dupla energia (DXA).

RESULTADOS:

A DMO de coluna lombar, fêmur proximal e corpo total aumentou com a idade, e as respectivas médias observadas foram IC1 = 0,631, 0.692, 0,798 g/cm2; IC2, 0,698, 0,763, 0,840 g/cm2; IC3, 0,865, 0,889, 0,972 g/cm2; IC4, 0,902, 0,922, 1,013 g/cm2; e IC5, 0,944, 0,929, 1,35 g/cm2. Observou-se diferença significativa entre 13 e 14 anos (IC3) ou quando as meninas estavam em M3 (0,709, 0,832, 0,867 g/cm2). Os valores dos BO apresentaram elevação entre 10 e 12 anos e quando as adolescentes estavam em M2-M3 (p < 0,001). Os valores das medianas dos BO diminuíram com o avançar da IO e M.

CONCLUSÕES:

Os BOs mostraram paralelismo com o pico de velocidade de crescimento e demonstraram correlação negativa com a DMO no sítios avaliados. O aumento da DMO e dos BOs foi observado em M3. .
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Breast / Bone Density / Puberty Type of study: Observational study / Prevalence study / Risk factors Limits: Adolescent / Child / Female / Humans Language: English Journal: J. pediatr. (Rio J.) Journal subject: Pediatrics Year: 2014 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual Paulista/BR

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Full text: Available Index: LILACS (Americas) Main subject: Breast / Bone Density / Puberty Type of study: Observational study / Prevalence study / Risk factors Limits: Adolescent / Child / Female / Humans Language: English Journal: J. pediatr. (Rio J.) Journal subject: Pediatrics Year: 2014 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Universidade Estadual Paulista/BR