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Deficiencia severa de vitamina D en niños de Punta Arenas, Chile: influencia de estado nutricional en la respuesta a suplementación / Severe vitamin D deficiency in children from Punta Arenas, Chile: Influence of nutritional status on the response to supplementation
Brinkmann, Karin; Le Roy, Catalina; Iñiguez, Germán; Borzutzky, Arturo.
  • Brinkmann, Karin; Hospital Clínico Magallanes Dr. Lautaro Navarro Avaria. Punta Arenas. CL
  • Le Roy, Catalina; Hospital Clínico Magallanes Dr. Lautaro Navarro Avaria. Punta Arenas. CL
  • Iñiguez, Germán; Hospital Clínico Magallanes Dr. Lautaro Navarro Avaria. Punta Arenas. CL
  • Borzutzky, Arturo; Hospital Clínico Magallanes Dr. Lautaro Navarro Avaria. Punta Arenas. CL
Rev. chil. pediatr ; 86(3): 182-188, jun. 2015. graf, tab
Article in Spanish | LILACS | ID: lil-760112
RESUMEN
En población austral existe un alto riesgo de deficiencia de vitamina D (VD) que puede tratarse mediante suplementación nutricional. El exceso de peso (EP) podría afectar la respuesta a su suplementación.

Objetivos:

Estudiar la prevalencia de deficiencia de VD y el efecto de la suplementación con colecalciferol (VD3) en niños sanos de Punta Arenas, Chile, y evaluar la posible asociación con el estado nutricional.

Metodología:

Se obtuvieron datos demográficos, antropométricos y medición sérica de 25-hidroxivitamina-D (25OHD) y parámetros de metabolismo óseo. Luego se suplementó a los niños con VD3 1.600 UI/día por un mes y se reevaluó 25OHD sérica.

Resultados:

Se estudiaron 108 niños, 50% hombres, edad promedio 9,6 ± 0,5 años. Un 39% eran eutróficos, 46% con sobrepeso y 15% obesos. La mediana de 25OHD fue 10,9 ng/ml 96,3% tenían deficiencia (< 20 ng/ml) y 3,7% insuficiencia (20 a 29 ng/ml). Se pesquisó deficiencia severa (< 12 ng/ml) en 62%. La concentración basal de 25OHD no varió según estado nutricional. Luego de la suplementación, la mediana de 25OHD fue 17,5 ng/ml 62% con deficiencia, 36% insuficiencia y 2% suficiencia (> 30 ng/ml). Los niños con EP tuvieron un alza de 25OHD significativamente menor que niños eutróficos (5 ± 5,5 vs. 7,7 ± 4,9, p = 0,03). Niños con EP requerirían dosis de VD 32% mayores que niños eutróficos para lograr la misma concentración de 25OHD.

Conclusiones:

Niños escolares de Punta Arenas presentan alta prevalencia de EP, deficiencia de VD y la mayoría en rango de deficiencia severa. El EP interfiere en la respuesta a suplementación farmacológica, logrando menor alza de 25OHD.
ABSTRACT
There is a high risk of vitamin D (VD) deficiency in the population of southern Chile that can be treated with VD supplements. Weight excess (WE) can influence the response to supplements.

Objectives:

To study the prevalence of VD deficiency and the effect of cholecalciferol (VD3) supplements in healthy children from Punta Arenas, Chile, and evaluate a possible association with nutritional status.

Methodology:

Demographic and anthropometric data, as well as laboratory assessment of serum 25-hidroxyvitamin D (25OHD) and other bone metabolism parameters were evaluated. After baseline evaluation, children were supplemented with VD3 1600 IU/day for one month, after which 25OHD was retested.

Results:

Of the 108 children studied, 50% were boys, and had a mean age of 9.6 ± 0.5 years. Nutritional assessment showed that 39% had normal weight, 46% were overweight, and 15% were obese. Median 25OHD was 10.9 ng/ml 96.3% had deficiency (< 20 ng/ml) and 3.7% insufficiency (20-29 ng/ml). Severe deficiency was found in 62% (< 12 ng/ml). Baseline 25OHD was not affected by nutritional status. After supplementation, median 25OHD was 17.5 ng/ml 62% had deficiency, 36% insufficiency, and 2% sufficiency (>30 ng/ml). Children with WE had a significantly lower increase in 25OHD than children with normal weight (5 ± 5.5 vs. 7.7 ± 4.9, p = 03). Children with WE may require 32% higher VD dose than normal weight children to attain the same 25OHD concentration.

Conclusions:

Chilean schoolchildren from Punta Arenas have high prevalence of WE and VD deficiency, with a majority in the range of severe VD deficiency. WE interferes in the response to VD supplementation, leading to a lower increase in 25OHD.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Vitamin D Deficiency / Nutritional Status / Cholecalciferol / Dietary Supplements Type of study: Observational study / Prevalence study / Risk factors Limits: Child / Female / Humans / Male Country/Region as subject: South America / Chile Language: Spanish Journal: Rev. chil. pediatr Journal subject: Pediatrics Year: 2015 Type: Article Affiliation country: Chile Institution/Affiliation country: Hospital Clínico Magallanes Dr. Lautaro Navarro Avaria/CL

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Full text: Available Index: LILACS (Americas) Main subject: Vitamin D Deficiency / Nutritional Status / Cholecalciferol / Dietary Supplements Type of study: Observational study / Prevalence study / Risk factors Limits: Child / Female / Humans / Male Country/Region as subject: South America / Chile Language: Spanish Journal: Rev. chil. pediatr Journal subject: Pediatrics Year: 2015 Type: Article Affiliation country: Chile Institution/Affiliation country: Hospital Clínico Magallanes Dr. Lautaro Navarro Avaria/CL