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The Relationship between Vitamin D, Inflammatory Markers, and Insulin Resistance in Children
Omer Okuyan1, Seyma Dumur2, Neval Elgormus3
1Department of Pediatrics, Medicine Hospital, Faculty of Medicine, Istanbul Atlas University, 34408 Istanbul, Turkey.
Insights
Vitamin D deficiency in children is linked to higher inflammatory markers and insulin resistance (IR). Supplementing vitamin D may help reduce inflammation and prevent IR in pediatric populations.
Area of Science:
- Pediatric Endocrinology
- Nutritional Biochemistry
- Immunology
Background:
- Insulin resistance (IR) is a growing concern in pediatric populations, often associated with inflammation.
- Hematologic inflammatory markers and vitamin D levels are increasingly recognized as potential contributors to metabolic dysfunction.
Purpose of the Study:
- To investigate the relationship between 25-hydroxyvitamin D (25(OH)D) levels and inflammatory hematologic ratios (NLR, PLR, SII, MHR, PAI) with insulin resistance (IR) in children.
- To explore the potential role of vitamin D in modulating systemic inflammation and insulin sensitivity.
Main Methods:
- A cross-sectional study involving 210 children aged 6-18 years, categorized into groups with and without IR.
- Analysis of vitamin D status, fasting insulin, HOMA-IR, HOMA-β, QUICKI, and inflammatory markers including neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), systemic immune-inflammation index (SII), monocyte/HDL-C ratio (MHR), and plasma atherogenic index (PAI).
Main Results:
- Children with IR exhibited significantly higher NLR, PLR, SII, MHR, fasting insulin, PAI, HOMA-IR, and HOMA-β, along with lower QUICKI compared to controls.
- Lower levels of NLR, SII, and MHR were observed in children with normal vitamin D levels.
- PLR was significantly lower in children with normal vitamin D compared to those with insufficient or deficient levels.
Conclusions:
- Childhood vitamin D deficiency is associated with elevated circulating inflammatory markers and impaired insulin sensitivity.
- Vitamin D supplementation may offer a therapeutic strategy to mitigate IR and reduce systemic inflammation in children.
Objective:
In this study, we investigated 25-hydroxyvitamin D (25(OH)D, vitamin D), inflammatory hematologic ratios such as neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), systemic immune-inflammation index (SII), monocyte/HDL-C ratio (MHR) and plasma atherogenic index (PAI) and possible relationships with insulin resistance (IR) in children.
Methods:
A total of 210 individuals, including 96 children with IR and 114 children without IR, aged 6-18 years, who were admitted to the Pediatric Endocrinology Outpatient Clinic at Medicine Hospital, Istanbul Atlas University were included in our study.
Result:
Compared to patients without IR, NLR, PLR, SII, and MHR were significantly higher in patients with IR. Fasting insulin, PAI, homeostasis model assessment of insulin resistance (HOMA-IR), and HOMA-β were significantly higher and quantitative insulin sensitivity check index (QUICKI) was considerably lower in patients with IR compared to those without IR. NLR, SII, and MHR were lower in normal vitamin D groups than the others (p < 0.001). PLR was lower in the group with normal vitamin D levels than the groups with insufficient or deficient levels of vitamin D (D < 21).
Conclusions:
We found that vitamin D deficiency in childhood is related to increased levels of circulating inflammatory markers (NLR, PLR, MHR, PAI), IR, and decreased insulin sensitivity. According to our results, supplementation of vitamin D may be beneficial in averting IR and enhanced systemic inflammation.
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