title: [Plasma 25-OH Vitamin D Concentrations in Cord Blood after Summer Months, Spain].
abstract: OBJECTIVE
  Plasma vitamin D (25(OH)D) levels in the newborn are dependent on maternal stores. Several studies showing a high prevalence of vitamin D deficiency in pregnant women have been published last years. The aim of the study was to analyze 25(OH)D levels in cord blood after summer month, determine whether there is a relation with different variables.
  
  
  METHODS
  103 pregnant women were recruited between October and early December 2014, whose gestations took place during month of maximum sun exposure. Plasmatic 25(OH)D values were measured in cord blood at birth. Clinical record data were collected and a nutritional survey was made on maternal vitamin D and calcium intake and sun exposure. Statistical analysis was performed using SPSS. Comparisons were performed using Kruskal-Wallis and Mann-Whitney U tests, and correction for multiple comparisons using Bonferroni. P value smaller than 0.05 and smaller than 0.0083 for multiple comparisons were considered sta¬tistically significant.
  
  
  RESULTS
  Mean 25(OH)D value in cord blood was 12.36± 7.2 ng/ml. Vitamin D deficiency was present in 83.4% of women. A statistically significant correlation was observed between lowvitamin D levels and low vitamin D intake (correlation coefficient 0.29); Ethnic group, with the highest level in caucasic group (17.9 ± 5.83 ng/ml) and the lowest in indopakistani group (6.68 ± 4.2 ng/ml); the use of traditional clothing (5.64 ± 3.09 ng/ml); low sun exposure and dark skin phototype with a correlation coefficient of 0.67 and -0.48, respectively.
  
  
  CONCLUSIONS
  There is a high prevalence of vitamin D deficiency in pregnant women regardless of the season and increased sun exposure. Low vitamin D levels in cord blood were significantly related to ethnicity (Indopakistan and Maghreb), low sun exposure and dark skin phototype. No statistically significant differences were found between vitamin D levels and perinatal variables studied.
authors.affiliation: Servicio de Pediatría. Hospital del Mar. Barcelona. España.
authors.forename: Cristina
authors.initials: C
authors.lastname: Manzano Varo
authors.affiliation: Servicio de Pediatría. Hospital del Mar. Barcelona. España.|Departamento de Pediatría, Obstetrícia y Ginecología y Medicina Preventiva. Universitat Autònoma de Barcelona. Barcelona. España.
authors.forename: Oscar
authors.initials: O
authors.lastname: García-Algar
authors.affiliation: Servicio de Pediatría. Hospital del Mar. Barcelona. España.|Departamento de Pediatría, Obstetrícia y Ginecología y Medicina Preventiva. Universitat Autònoma de Barcelona. Barcelona. España.
authors.forename: Antonio
authors.initials: A
authors.lastname: Mur Sierra
authors.affiliation: Laboratorio de Hormonas. Hospital Universitari Vall d'Hebron. Barcelona. España.
authors.forename: Roser
authors.initials: R
authors.lastname: Ferrer Costa
authors.affiliation: Departamento de Pediatría, Obstetrícia y Ginecología y Medicina Preventiva. Universitat Autònoma de Barcelona. Barcelona. España.|Servicio de Pediatría. Hospital Universitari Vall d'Hebron. Barcelona. España.
authors.forename: Antonio
authors.initials: A
authors.lastname: Carrascosa Lezcano
authors.affiliation: Departamento de Pediatría, Obstetrícia y Ginecología y Medicina Preventiva. Universitat Autònoma de Barcelona. Barcelona. España.|Servicio de Pediatría. Hospital Universitari Vall d'Hebron. Barcelona. España.
authors.forename: Diego
authors.initials: D
authors.lastname: Yeste Fernández
authors.affiliation: Servicio de Pediatría. Hospital del Mar. Barcelona. España.|Departamento de Pediatría, Obstetrícia y Ginecología y Medicina Preventiva. Universitat Autònoma de Barcelona. Barcelona. España.
authors.forename: Sandra
authors.initials: S
authors.lastname: Ortigosa Gómez
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000097:blood; D005260:Female; D005312:Fetal Blood / Q000378:metabolism*; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D011248:Pregnancy Complications / Q000097:blood / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology; D015995:Prevalence; D012621:Seasons; D013030:Spain / Q000453:epidemiology; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood; D014808:Vitamin D Deficiency / Q000097:blood / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology
chemical_list: D015415:Biomarkers; D014807:Vitamin D; C104450:25-hydroxyvitamin D
keywords: Ethnic Groups; Infant, Newborn; Pregnancy; Spain; Vitamin D; Vitamin D deficiency