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Background and Objectives: The occurrence of Down syndrome and chromosomal nondysjunction is more prevalent in the progeny of mothers who conceive at an advanced age. The primary objectives of the study were to investigate the prevalence of Vitamin D deficiency through the evaluation of 25(OH) Vitamin D levels in children diagnosed with Down syndrome. Material and Methods: This study employed a prospective descriptive design. The research was carried out at the Department of Pediatrics, Gayatri Vidya Parishad Institute of Health Care and Medical Technology, Visakhapatnam, Andhra Pradesh, which is a medical center providing specialized care in India. The study spanned from May 2022 to April 2023. A total of 50 children who were thought to have Down syndrome were subjected to examinations. Results: A total of 50 youngsters who were thought to have Down syndrome were subjected to interviews. Two individuals exhibited a cytogenetic profile consistent with Down syndrome; nevertheless, they expressed a lack of willingness to undergo additional diagnostic pro cedures. Three individuals exhibited clinical characteristics consistent with Down syndrome, however, they declined to provide a blood sample for subsequent diagnostic testing and verification. The cytogenetic study of the youngster, consisting of 50 samples, did not reveal any evidence of Down syndrome. The analysis comprised a total of 50 children, consisting of 40 boys and 10 girls. The following table and graph provide an overview of the demographic composition of the children in terms of age and gender. Conclusion: Children with Down syndrome had a prevalence of 25 (OH) Vitamin D deficiency of 26.8%. Deficiencies in 25 (OH) Vitamin D had no appreciable effect on these children's height, bone age, or other biochemical indicators. [ABSTRACT FROM AUTHOR]

Aim: To study the effect of vitamin D supplementation in severity and control of bronchial asthma in children in Bihar region Methods: A cross-sectional, prospective study was conducted in the Department of pediatrics, Vardhman institute of Medical Sciences, Pawapuri, Nalanda, Bihar, India for 1 year, after taking the approval of the protocol review committee and institutional ethics committee. 53 asthmatic patients and 53 healthy controls were included in this study. The level of serum vitamin D in both groups was measured by radioimmunoassay (RIA) method at the reference lab and was categorized as sufficient (> 30 ng/ml), insufficient (20 to 30 ng/ml), or deficient (< 20 ng/ml). The severity of asthma was also stratified according to the asthma guideline into four grades of intermittent or mild, moderate, severe persistent. Results: Regarding rate of admission, 13.2% of patients were hospitalized once, 9.4% of patients were hospitalized twice, and 1.9% of them were also hospitalized three times. In the patients group and regarding the severity of asthma, 11.3% were classified as mild asthma, 45.3% as moderate asthma, and 43.4% as severe asthma. Also regarding control status of asthma, the disease was controlled in 18.9 %, partially controlled in 34.0 %, and uncontrolled in 47.2 %. According to the level of disease attack risk, 5 of 31 children aged less than 5 years (16.1%) classified as high-risk, while 7 of 22 children older than 5 years (31.8%) classified as high risk. Assessing the serum level of vitamin D showed that the asthmatic children had significantly lower level of vitamin D compared to normal cases (14.53 ± 8.10 ng.ml versus 22.45 ± 13.46 ng/ml, p < 0.001). Also, in the groups with and without asthma, the prevalence of vitamin D deficiency was 73.6 and 49.1%, and the prevalence of vitamin D insufficiency was 18.9 and 18.9 %, while normal vitamin D level was revealed in 7.5 and 32.1%, respectively with a significant difference (p = 0.005). In this regard, mean serum level of vitamin D in the patients with mild asthma was 12.85 ± 7.06 ng/ml, in the group with moderate asthma was 16.98 ± 8.63 ng/ml, in the patients with severe asthma was 12.42 ± 7.52 ng/ml, and in those with persistent asthma was 12.01 ± 5.00 ng/ml (p = 0.25). Conclusion: Vitamin D deficiency and insufficiency is a common finding among asthmatic children that may be associated by the physiological mechanism of this phenomenon. In fact, it seems that the use of supplement vitamin D can prevent progression of childhood asthma. [ABSTRACT FROM AUTHOR]