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Background: Children and young adults with HIV infection may exhibit vitamin D deficiency, which is harmful to bone health as well as the endocrine and immune systems.
Objectives: This study sought to investigate the effect of vitamin D supplementation on children and young adults with HIV infection.
Methods: The PubMed, Embase, and Cochrane databases were searched. Randomized controlled trials that have evaluated the effects of vitamin D supplementation (ergocalciferol or cholecalciferol) at any dose or for any duration in children and young adults with HIV infection, aged 0-25 y, were included. A random-effects model was used, and the standardized mean difference (SMD) and 95% CI were calculated.
Results: Ten trials, with 21 publications and 966 participants (mean age: 17.9 y), were included in the meta-analysis. The supplementation dose and the duration of the studies included ranged from 400 to 7000 IU/d and from 6 to 24 mo, respectively. Vitamin D supplementation was associated with a significantly higher serum 25(OH)D concentration at 12 mo (SMD: 1.14; 95% CI: 0.64, 1.65; P < 0.00001) compared with a placebo. No significant difference was observed in spine BMD (SMD: -0.09; 95% CI: -0.47, 0.3; P = 0.65) at 12 mo between these 2 groups. However, participants who received higher doses (1600-4000 IU/d) had significantly higher total BMD (SMD: 0.23; 95% CI: 0.02, 0.44; P = 0.03) and nonsignificantly higher spine BMD (SMD: 0.3; 95% CI: -0.02, 0.61; P = 0.07) at 12 mo compared with those who received standard doses (400-800 IU/d).
Conclusions: Vitamin D supplementation in children and young adults with HIV infection increases the serum 25(OH)D concentration. A relatively high daily dose of vitamin D (1600-4000 IU) improves total BMD at 12 mo and results in sufficient 25(OH)D concentrations.
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http://dx.doi.org/10.1016/j.tjnut.2022.10.008 | DOI Listing |
Annu Rev Entomol
September 2025
2Department of Entomology and Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York, USA; email:
Nutritional symbioses with microorganisms have profoundly shaped the evolutionary success of ants, enabling them to overcome dietary limitations and thrive across diverse ecological niches and trophic levels. These interactions are particularly crucial for ants with specialized diets, where microbial symbionts compensate for dietary imbalances by contributing to nitrogen metabolism, vitamin supplementation, and the catabolism of plant fibers and proteins. This review synthesizes recent advances in our understanding of ant-microbe symbioses, focusing on diversity, functional roles in host nutrition, and mechanisms of transmission of symbiotic microorganisms.
View Article and Find Full Text PDFBackground: Diabetes mellitus is still a major health problem affecting individuals all over the world. Type 1 diabetes mellitus occurs due to insulin deficiency resulting from the destruction of pancreatic β-cells. This study aimed to investigate how vitamin D reduces blood glucose levels and HbA1c.
View Article and Find Full Text PDFJ Vet Intern Med
September 2025
Department of Specialty Medicine, Midwestern University College of Veterinary Medicine, Glendale, Arizona, USA.
Background: Vitamin D modulates the immune response in many species, including dogs. To date, research investigating the immunological effects of vitamin D in dogs is limited to in vitro studies.
Objectives: Provide PO calcifediol supplementation to healthy dogs to evaluate its tolerability and assess its effect on leukocyte production of tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-10.
J Anim Sci
September 2025
Department of Animal Biotechnology, Dankook University, Cheonan, 31116, Republic of Korea.
The post-weaning period is stressful for pigs due to changes in their environment and diet. The occurrence of diarrhea at this stage is high. Growth promoters such as antibiotics and zinc oxide (ZnO) have been used to not only reduce post-weaning diarrhea but also improve growth performance of weaning pigs.
View Article and Find Full Text PDFMedicine (Baltimore)
September 2025
Division of General Internal Medicine, Department of Medicine, University Hospitals, Genève, Switzerland.
Rationale: This case highlights the importance of considering a wide range of possible diagnoses when faced with unexplained hemorrhagic symptoms. When standard investigations fail to identify a clear cause, it is essential to conduct a detailed dietary history. This can lead to the diagnosis of scurvy, a reversible vitamin C deficiency that is often overlooked in populations at risk.
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