Sunlight, Ozone and Vitamin D

Beadle, F.C.

doi:10.1111/j.1365-2133.1977.tb14144.x

Cited by 23 publications

(9 citation statements)

References 15 publications

(10 reference statements)

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“…Serum 25-OHD is derived from both dietary intake and sunlight-induced production by the skin, 25 and as the most abundant circulating vitamin D metabolite, 26 it represents the most sensitive and useful index of the body's vitamin D supply. Sunlight deprivation due to immobilization, together with decreased dietary intake of vitamin D, causes 25-OHD deficiency.…”

Section: Discussionmentioning

confidence: 99%

Retracted: Abnormal bone and calcium metabolism in immobilized Parkinson's disease patients

et al. 2005

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To elucidate the influence of immobilization-induced hypercalcemia on bone metabolism in Parkinson's disease (PD), we measured serum biochemical indexes and bone mineral density (BMD) in the second metacarpals of 142 elderly PD patients and 99 age-matched healthy controls. Serum concentrations of 25-hydroxyvitamin D (25-OHD), 1,25-dihydroxyvitamin D (1,25-[OH](2)D), ionized calcium, intact parathyroid hormone (PTH), and intact bone Gla protein (BGP) were measured. Urinary deoxypyridinoline (D-Pyr) was also measured. Increased serum calcium levels (mean, 1.27 mmol/L) were observed in PD patients, and the levels correlated negatively with the Unified Parkinson's Disease Rating Scale III (UPDRS III), indicating the presence of immobilization-induced bone resorption with resultant hypercalcemia. Decreased serum concentrations of 1,25-[OH](2)D (mean, 88.7 pmol/L) and 25-OHD (mean, 29.7 nmol/L) were noted. Serum PTH was decreased (mean, 25.2 ng/L). Serum BGP was decreased while urinary D-Pyr concentration elevated. A negative correlation was observed between 1,25-[OH](2)D levels and serum calcium or UPDRS III (P < 0.0001). In disabled PD patients, immobilization-induced hypercalcemia may inhibit secretion of PTH, which in turn suppresses 1,25-[OH](2)D production. 25-OHD insufficiency may also contribute to decreased 1,25-[OH](2)D. These abnormalities may be corrected by the suppression of bone resorption with bisphoshonate, and supplementations of calcium and vitamin D should be avoided in these patients.

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Section: Discussionmentioning

confidence: 99%

Retracted: Abnormal bone and calcium metabolism in immobilized Parkinson's disease patients

et al. 2005

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“…Serum 25‐hydroxyvitamin D is derived from both dietary intake and sunlight‐induced production in the skin (15, 16). The associations of hypovitaminosis D with vitamin D supplementation and the risk of falls have been confirmed in elderly persons (17–19).…”

Section: Discussionmentioning

confidence: 99%

Retracted : Sunlight exposure is important for preventing hip fractures in patients with Alzheimer’s disease, Parkinson’s disease, or stroke

Iwamoto

Takeda

Matsumoto

2011

Acta Neurologica Scandinavica

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“…It is an important etiological factor in the development of skin cancers and sun-related eye problems when exposure is high [9,10]. However, the exposure to solar ultraviolet radiation (UVR) is an essential step for the production of Vitamin D, and also the main source of vitamin D in human body [11][12][13][14]. Ultraviolet B (UVB) rays in the solar UVR spectrum produce vitamin D in the human body.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Practice and Factors Affecting Sunlight Exposure of Infants Among Mothers Attending Governmental Health Facilities in Debre Markos Town, East Gojjam, Ethiopia, 2015

Abate¹

2016

AJNS

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Introduction: For centuries, sunlight has been used for therapeutic purposes. Parents still expose their infants to sunlight to treat neonatal jaundice, mostly to supply vitamin D for bone development as a consequence of health beliefs. Objective: The main objective of this study was to assess practice and factors affecting sunlight exposure of infants among mothers attending governmental health facilities in Debre Markos Town, East Gojjam, Ethiopia, 2015. Method: Cross sectional descriptive study was conducted among mothers attending in under five and immunization clinics of all government health facilities in Debre Markos Town by taking a total sample size of 345 from December 1 to 30, 2014. Probability sampling method was used for the selection of individual respondents. Data was entered using EPI data version 3.1 and analyzed by SPSS version 20. Binary and multiple logistic regressions were done to show the association of dependent and independent variables. Results: Out of 359 respondents identified for the study 96% (n=345) were responded for the interview. From the total respondents (55.4%) of them had poor practice about sunlight exposure. In multivariate analysis mothers' educational status had significant association with practice of sunlight exposure of infants. Conclusion and Recommendations: The findings in this study showed mothers had poor practice about sunlight exposure. Therefore, mothers need to be educated about the importance of sunlight exposure.

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Sunlight, Ozone and Vitamin D

Cited by 23 publications

References 15 publications

Retracted: Abnormal bone and calcium metabolism in immobilized Parkinson's disease patients

Retracted: Abnormal bone and calcium metabolism in immobilized Parkinson's disease patients

Retracted : Sunlight exposure is important for preventing hip fractures in patients with Alzheimer’s disease, Parkinson’s disease, or stroke

Assessment of Practice and Factors Affecting Sunlight Exposure of Infants Among Mothers Attending Governmental Health Facilities in Debre Markos Town, East Gojjam, Ethiopia, 2015

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