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WIKINDX Resources

Makida, K., Nishida, Y., Morita, D., Ochiai, S., Higuchi, Y., & Seki, T., et al. (2020). low energy irradiation of narrow-range uv-led prevents osteosarcopenia associated with vitamin d deficiency in senescence-accelerated mouse prone. Sci Rep, 6(10), 11892. 
Added by: Sarina (2022-09-26 12:31:38)   
Resource type: Journal Article
DOI: 10.1038/s41598-020-68641-8
BibTeX citation key: Makida2020
View all bibliographic details
Categories: Englisch = English
Keywords: LED, Vitamin D = Vitamin D
Creators: Higuchi, Ikuta, Ishiguro, Makida, Morita, Nishida, Ochiai, Seki
Collection: Sci Rep
Views: 4/304
Views index: %
Popularity index: 1%
Meine Sichtweise (Keine vollständige Zusammenfassung des Artikels! Meine Meinung muss nicht mit der Meinung der Autoren übereinstimmen! Bitte lesen Sie auch die Originalarbeit!)     

Zusammenfassung

Eine 316-nm-LED wurde verwendet um Mäuse mit Vitamin-D3-Mangel zu bestrahlen und die Blutwerte, Knochen, Muskeln untersucht.

Die LED fällt auf weil sie deutlich breiter emittiert als die mir bisher bekannten LEDs. Das Spektrum startet bei ca. 290 nm und geht bis ca. 370 nm mit einem maximum bei 316 nm.

Während die autoren in einer früheren Studie mit einer 305-nm-LED Hautschäden (Verdickungen und Melan-A-positive Zellen, ein Warnhinweis für Hautkrebs) beobachteten, waren diese bei der 316-nm-LED nicht sichtbar.
Morita, D. et al. Ultraviolet irradiation with a LED device improves bone metabolism associated with vitamin D defciency in senescence-accelerated mouse P6. 1354

Als optimal schätzen die Autoren eine Bestrahlungsstärke von 0.16 mW/cm² ein, was einem UV-Index von 2.0 entspricht.

Einschätzung


Added by: Sarina  Last edited by: Sarina
Abstract

Deficiency of vitamin D is an important cause of osteosarcopenia. The purpose of this study is to examine the effects of low energy narrow-range UV-LED on osteosarcopenia in animal models of senescence-accelerated mouse prone 6 (SAMP6). Preliminary experiments specified the minimum irradiance intensity and dose efficacy for vitamin D production (316 nm, 0.16 mW/cm2, 1,000 J/m2). we set a total of 4 groups (n = 8 per group); vitamin D-repletion without UV irradiation (Vit.D+UV−), vitamin D-repletion with UV irradiation (Vit.D+UV +), vitamin D-deficiency without UV irradiation, (Vit.D−UV−), and vitamin D-deficiency with UV irradiation (Vit.D−UV +). Serum levels of 25(OH)D at 28 and 36 weeks of age were increased in Vit.D−UV+ group as compared with Vit.D−UV− group. Trabecular bone mineral density on micro-CT was higher in Vit.D−UV+ group than in Vit.D−UV− group at 36 weeks of age. In the histological assay, fewer osteoclasts were observed in Vit.D−UV+ group than in Vit.D−UV− group. Grip strength and muscle mass were higher in Vit.D−UV+ group than in Vit.D−UV− group at 36 weeks of age. Signs of severe damage induced by UV irradiation was not found in skin histology. Low energy narrow-range UV irradiation may improve osteosarcopenia associated with vitamin D deficiency in SAMP6.

 

 

  
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