Role of Carotene and Vitamin A in Animal Feeding

2015 ◽  
pp. 224-280 ◽  
Author(s):  
S. Y. Thompson
Keyword(s):  
2020 ◽  
pp. 49-57
Author(s):  
S. V. Orlova ◽  
E. A. Nikitina ◽  
L. I. Karushina ◽  
Yu. A. Pigaryova ◽  
O. E. Pronina

Vitamin A (retinol) is one of the key elements for regulating the immune response and controls the division and differentiation of epithelial cells of the mucous membranes of the bronchopulmonary system, gastrointestinal tract, urinary tract, eyes, etc. Its significance in the context of the COVID‑19 pandemic is difficult to overestimate. However, a number of studies conducted in the past have associated the additional intake of vitamin A with an increased risk of developing cancer, as a result of which vitamin A was practically excluded from therapeutic practice in developed countries. Our review highlights the role of vitamin A in maintaining human health and the latest data on its effect on the development mechanisms of somatic pathology.


Author(s):  
Bisma Laeeque

Retinol and Tocopherol are commonly known as fat soluble Vitamin A and D. This research was undertaken with the objective to study Vitamin A and D’s effect in combating smog caused illness among females. This case report highlights diseases caused among young woman of Lahore due to smog. Hypothesis formulated for this study was accepted after testing that intake of daily-recommended amount of Vitamin A and D by females helps them in fighting diseases caused by smog. An intervention based on Food and Nutrition Board’s Recommended Dietary Allowances (RDAs) was planned. After the analysis of data by SPSS and excel, it was indicated that women could fight smog caused diseases better by including Vitamin A and D in their daily diet. It was also found that a strong positive correlation existed between good health condition among females and intake of Vitamin A and D.


2021 ◽  
Vol 8 ◽  
pp. 2333794X2110217
Author(s):  
Indah K. Murni ◽  
Endy P. Prawirohartono ◽  
Rina Triasih

Background. Vitamin C, E, D, A, zinc are considered to be essential in preventing and treating of acute respiratory infections (ARI) including COVID-19. Methods. We reviewed published studies evaluating the potential roles of these vitamin and zinc for ARIs and COVID-19 using Medline database, medRxiv, and bibliographic references. Results. Vitamins C, D, and E did not reduce incidence of common cold in general, but vitamin C reduced by half in population with physical and environment stresses. Vitamins C and E shortened duration and reduced severity of common cold. A large-dose vitamin A had no effect on recovery from pneumonia. Zinc improved clinical deterioration and pneumonia duration in under five. The effect on preventing COVID-19 morbidity and related-death was lacking. Conclusions. Although the effects of vitamins and zinc on ARIs including COVID-19 were inconclusive, taking these for a short period during pandemic may be beneficial when there is risks of deficiency.


Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 302
Author(s):  
Fritzlaine C. Roche ◽  
Tamia A. Harris-Tryon

Vitamin A is a fat-soluble vitamin that plays an important role in skin immunity. Deficiencies in Vitamin A have been linked to impaired immune response and increased susceptibility to skin infections and inflammatory skin disease. This narrative review summarizes recent primary evidence that elucidates the role of vitamin A and its derivatives on innate immune regulators through mechanisms that promote skin immunity and sustain the skin microbiome.


2021 ◽  
pp. 037957212110602
Author(s):  
Mark Pretzel P. Zumaraga ◽  
Jose Maria Reynaldo Apollo Arquiza ◽  
Mae Anne Concepcion ◽  
Leah Perlas ◽  
Ma. Neda Alcudia-Catalma ◽  
...  

Background: The study aimed to identify two beta-carotene 15,15′-monooxygenase (BCMO1) mutations, namely R267S and A379V, and determine their association with vitamin A status among Filipinos 6 to 19 years old respondents of the 2013 Philippine National Nutrition Survey living in the National Capital Region. Materials and Methods: This study followed cross-sectional design. Whole blood specimen was collected in the morning and was used as source of genomic DNA and serum for retinol concentration determination. Fisher exact test was performed to determine whether genotype frequencies were associated to retinol concentrations/vitamin A deficiency status. A level of P < .05 was identified as significant. Results: A total of 693 Filipino children and adolescents were included. Of the 693, there were at least 7.6% who bears the combined mutations for R267S + A379V. Association analysis showed that an inverse relationship exists between the A379V TT variant and vitamin A status. Although the exact role of these identified polymorphisms on retinol/carotenoid metabolism need to be confirmed in dedicated functional studies. Conclusion: This study has identified for the first time the presence of 2 nonsynonymous genetic variants/mutations in the coding region of BCMO1 gene. Interestingly, one of these two variants, the A379V T, was found to be associated with vitamin A status. It is, therefore, warranted to investigate the role of BCMO1 variants for the success of supplementation programs and fortification efforts among vulnerable populations in this region. Genetic variability should be considered for future provitamin A supplementation recommendations among children and adolescents in the Philippines.


2015 ◽  
Vol 8 (4-6) ◽  
pp. 164-173 ◽  
Author(s):  
Katie Goodwin ◽  
Michal Abrahamowicz ◽  
Gabriel Leonard ◽  
Michel Perron ◽  
Louis Richer ◽  
...  

2014 ◽  
Vol 203 (6) ◽  
pp. 415-424 ◽  
Author(s):  
Tilman E. Klassert ◽  
Anja Hanisch ◽  
Julia Bräuer ◽  
Esther Klaile ◽  
Kerstin A. Heyl ◽  
...  

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