Vitamin D Status in Infants with Two Different Wheezing Phenotypes

Ali Ozdemir1, Dilek Dogruel2, Ozlem Yilmaz3

  • 1Pediatric Pulmonary Section, Department of Pediatrics, Mersin Children's Hospital, Halkkent, 33240, Mersin, Turkey. aliozdemir@hotmail.com.

Insights

Infants with recurrent wheeze, regardless of Asthma Predictive Index status, show lower vitamin D levels. Vitamin D deficiency is more prevalent in these infants, suggesting a potential role in recurrent wheezing development.

Area of Science:

  • Pediatrics
  • Nutritional Science
  • Respiratory Medicine

Background:

  • Recurrent wheeze is a common respiratory issue in early childhood.
  • Vitamin D plays a crucial role in immune system regulation.
  • Understanding factors contributing to recurrent wheeze is vital for early intervention.

Purpose of the Study:

  • To investigate serum vitamin D levels in infants diagnosed with recurrent wheeze.
  • To compare vitamin D status between infants with different recurrent wheeze phenotypes (API positive vs. negative) and healthy controls.

Main Methods:

  • A cross-sectional study involving 186 infants with recurrent wheezing and 118 healthy controls.
  • Serum 25-hydroxy vitamin D [25(OH)D] levels were measured as an indicator of vitamin D adequacy.
  • Infants with recurrent wheeze were categorized based on Asthma Predictive Index (API) positivity.

Main Results:

  • Infants with recurrent wheeze exhibited significantly lower mean serum 25(OH)D levels compared to healthy controls (p < 0.05).
  • The API-negative group had the lowest mean vitamin D level (22.71 ± 10.76 ng/ml), followed by the API-positive group (24.08 ± 9.02 ng/ml).
  • Vitamin D deficiency was more prevalent in both API-negative (52.1%) and API-positive (38.5%) infants compared to controls (31.4%).

Conclusions:

  • Low serum 25(OH)D levels are detected in infants presenting with recurrent wheezing, irrespective of API status.
  • Vitamin D deficiency may be implicated in the pathogenesis of recurrent wheezing in infants.
  • Further research is warranted to explore the therapeutic potential of vitamin D supplementation.
Abstract

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