A PLEA FOR FURTHER INVESTIGATION OF THE SUN‐PROTECTIVE EFFECT OF VITAMIN A

1968 ◽  
Vol 1 (13) ◽  
pp. 566-566
Keyword(s):  
2020 ◽  
Vol 39 (12) ◽  
pp. 1737-1746
Author(s):  
N Yıldırım ◽  
A Karatas ◽  
M Cengiz ◽  
E Onalan ◽  
GN Yazıcı ◽  
...  

Cutaneous side effects associated with sunitinib use are a major problem in patients receiving cancer treatment. The aim of this study was to investigate the protective effect of adenosine triphosphate (ATP) against possible skin damage resulting from sunitinib use in rats. Thirty Albino Winstar rats were divided into the following three groups: healthy controls (HCs, n = 10), sunitinib (SUN, n = 10), and sunitinib + ATP (SAT, n = 10). ATP was injected intraperitoneally at a dose of 2 mg/kg. One hour subsequent to the administration of ATP and 0.9% NaCl, the SAT and SUN groups were orally administered a dose of 25 mg/kg sunitinib to the stomach. Macroscopic evaluation of the skin indicated lower levels of skin damage in the SAT group than in the SUN group. As an indicator of oxidative stress, malondialdehyde (MDA), total oxidant status (TOS), and oxidative stress index (OSI) levels were significantly higher in the SUN group than in the HC group, while total glutathione (tGSH) and total antioxidant status (TAS) levels were significantly lower. However, MDA, TOS, and OSI levels were significantly lower in the SAT group than in the SUN group, while tGSH and TAS levels were significantly higher. Histopathological examination revealed keratin plugs with edema, vasopathology, and inflammatory cell infiltration in the SUN group. The SAT group showed less necrotic epithelium, keratin plugs, edema, and vasopathology than the SUN group. ATP can be effective in preventing skin damage caused by sunitinib use by reducing oxidative stress.


2019 ◽  
Vol 24 (8) ◽  
pp. 3037-3046
Author(s):  
Luciano Lima Correia ◽  
Hermano Alexandre Lima Rocha ◽  
Jocileide Sales Campos ◽  
Anamaria Cavalcante e Silva ◽  
Dirlene Mafalda Ildefonso da Silveira ◽  
...  

Abstract 200 million pre-school age children are not developing properly. Delays in child development are associated with multiple factors. This study aims to analyze if vitamin A supplementation is associated with improved development and how this effect could be mediated by nutritional status. Population-based study surveyed a representative sample of 8000 households, 1232 children 0-35 months, in the state of Ceará, Brazil. The variables analysed included child developmental status, nutritional determinants and confounding factors. The main effects and interactions were evaluated using Cox regressive models. Vitamin A supplementation showed protective effect to delay in cognitive and motor development modified by interaction with nutritional status. While well-nourished supplemented children presented a 67% lower risk of cognitive delay (adjusted PRR = 0·33 [0·21–0·53]), stunted children had no benefit from supplementation (adjusted PRR = 0·97 [0·39–2·40]). Vitamin A supplementation has a protective effect on child development, but not in stunted children. This suggests that supplementation is effective in promoting child development, especially if associated to a joint effort to improve the nutritional status of children, given the importance of this mediator.


2013 ◽  
Vol 32 (6) ◽  
pp. 1012-1016 ◽  
Author(s):  
Sinead Field ◽  
Faye Elliott ◽  
Juliette Randerson-Moor ◽  
Kairen Kukalizch ◽  
Jennifer H. Barrett ◽  
...  

2016 ◽  
Vol 130 (5) ◽  
pp. 440-446 ◽  
Author(s):  
I Aladag ◽  
M Guven ◽  
M Songu

AbstractObjective:To investigate the use of systemic N-acetylcysteine and vitamin A in the prevention of gentamicin ototoxicity in rats.Methods:Forty-two Wistar rats were divided into four groups according to treatment: intratympanic saline, intratympanic gentamicin, intraperitoneal vitamin A after intratympanic gentamicin, and intraperitoneal N-acetylcysteine after intratympanic gentamicin. Signal-to-noise ratio and distortion product otoacoustic emissions were evaluated in all groups.Results:N-acetylcysteine had a significant protective effect at 1.5, 2, 3, 4, 6 and 8 kHz, whilst vitamin A had a significant protective effect at 2, 3, 4 and 6 kHz, as determined by the distortion product otoacoustic emission measurements. According to the signal-to-noise measurements, N-acetylcysteine had a significant protective effect at 1.5, 2, 3, 4, 6 and 8 kHz, whilst vitamin A had a significant protective effect at 3, 6 and 8 kHz.Conclusion:Gentamicin-induced hearing loss in rats may be prevented by the concomitant use of vitamin A and N-acetylcysteine. Specifically, N-acetylcysteine appeared to have a more protective effect than vitamin A for a greater range of noise frequencies.


2020 ◽  
Vol 8 (1.1) ◽  
pp. 7256-7270
Author(s):  
Eman Mohamed Kamel ◽  
◽  
Shimaa Anter Fareed ◽  
Nassar Ayoub ◽  
◽  
...  

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