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Time spent outdoors through childhood and adolescence - assessed by 25-hydroxyvitamin D concentration - and risk of myopia at 20 yearsTo investigate the relationship between time spent outdoors, at particular ages in childhood and adolescence, and myopia status in young adulthood using serum 25-hydroxyvitamin D [25(OH)D] concentration as a biomarker of time spent outdoors. Participants of the Raine Study Generation 2 cohort had 25(OH)D concentrations measured at the 6-, 14-, 17- and 20-year follow-ups. Participants underwent cycloplegic autorefraction at age 20 years, and myopia was defined as a mean spherical equivalent -0.50 dioptres or more myopic. Logistic regression was used to analyse the association between risk of myopia at age 20 years and age-specific 25(OH)D concentrations. Linear mixed-effects models were used to analyse trajectory of 25(OH)D concentrations from 6 to 20 years.
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Research symposium to hear how sunscreens proved no threat to vitamin D production in recent European studyLeading international and national experts will gather at The Kids Research Institute Australia on Friday for a D-Light Research Symposium.
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Developmental vitamin D deficiency increases foetal exposure to testosteroneAutism spectrum disorder (ASD) is a group of neurodevelopmental disorders which are more common in males. The 'prenatal sex steroid' hypothesis links excessive sex-steroid exposure during foetal life with the behavioural differences observed in ASD. However, the reason why sex steroid exposure may be excessive remains unclear. Epidemiological studies have identified several environmental risk factors associated with ASD, including developmental vitamin D (DVD) deficiency.
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The current state of play of rodent models to study the role of vitamin D in UV-induced immunomodulationUltraviolet radiation (UVR) from sunlight is immunomodulatory and the main source of vitamin D for humans.
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Vitamin D 3 deficiency enhances allergen-induced lymphocyte responses in a mouse model of allergic airway diseaseIn this study, using a mouse model, we determined whether vitamin D deficiency in utero and during early life modulated the severity of asthma.
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UV exposure and protection against allergic airways diseaseAsthma is a chronic inflammatory disease of the small and large conducting airway mucosa characterised by Th2 cell immunity.
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Are low sun exposure and/or Vitamin D risk factors for type 1 diabetesEvidence supports that higher sun exposure and/or vitamin D sufficiency in pregnancy, or supplementation in early life, decreases type 1 diabetes risk
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Weekend personal ultraviolet radiation exposure in four cities in Australia: Influence of temperature, humidity and ambient ultraviolet radiationThe effects of meteorological factors on weekend sun exposure behaviours and personal received dose of ultraviolet radiation (UVR) in Australian adults.
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Variation in incidence of pediatric Crohn's disease in relation to latitude and ambient ultraviolet radiation: A systematic review and analysis.In previous studies, CD incidence increased with higher geographic latitude in the Northern Hemisphere.
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The effects of in utero vitamin D deficiency on airway smooth muscle mass and lung functionIn this study, we aimed to uncover the molecular mechanisms contributing to altered lung structure and function.