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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1925 1
1926 1
1927 2
1928 1
1930 2
1931 2
1932 1
1933 3
1934 2
1935 1
1936 1
1937 2
1938 1
1939 2
1941 1
1945 5
1946 12
1947 15
1948 13
1949 2
1950 8
1951 8
1952 4
1953 10
1954 9
1955 7
1956 8
1957 7
1958 6
1959 2
1960 12
1961 27
1962 19
1963 30
1964 60
1965 17
1966 15
1967 27
1968 28
1969 56
1970 44
1971 51
1972 49
1973 58
1974 58
1975 76
1976 74
1977 53
1978 79
1979 68
1980 76
1981 70
1982 65
1983 111
1984 114
1985 117
1986 117
1987 116
1988 112
1989 115
1990 113
1991 122
1992 126
1993 140
1994 119
1995 138
1996 168
1997 151
1998 120
1999 144
2000 140
2001 136
2002 180
2003 169
2004 154
2005 154
2006 140
2007 175
2008 150
2009 151
2010 190
2011 183
2012 260
2013 226
2014 252
2015 227
2016 228
2017 234
2018 210
2019 249
2020 272
2021 280
2022 285
2023 277
2024 84

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7,792 results

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Page 1
The importance of vitamin A in nutrition.
Dawson MI. Dawson MI. Curr Pharm Des. 2000 Feb;6(3):311-25. doi: 10.2174/1381612003401190. Curr Pharm Des. 2000. PMID: 10637381 Review.
Apparently, in populations deficient in vitamin A (caused by an inadequate diet or tobacco use), supplementation programs appear to be effective in reducing cancer incidence. In groups already having sufficient dietary or supplemental vitamin A, …
Apparently, in populations deficient in vitamin A (caused by an inadequate diet or tobacco use), supplementation progra …
Vitamin A and Bone Fractures.
Knapik JJ, Hoedebecke SS. Knapik JJ, et al. J Spec Oper Med. 2021 Spring;21(1):115-119. doi: 10.55460/ETA1-NLQP. J Spec Oper Med. 2021. PMID: 33721319
Vitamin A is a generic term describing compounds that have the same biological activity as retinol. Dietary vitamin A can be obtained from "provitamin A" carotenoids (e.g., ss-carotene) found in plant foods such as carrots, cantaloupes, and sweet peppe …
Vitamin A is a generic term describing compounds that have the same biological activity as retinol. Dietary vitamin …
Role of Vitamin A in Mammary Gland Development and Lactation.
Cabezuelo MT, Zaragozá R, Barber T, Viña JR. Cabezuelo MT, et al. Nutrients. 2019 Dec 27;12(1):80. doi: 10.3390/nu12010080. Nutrients. 2019. PMID: 31892157 Free PMC article. Review.
It is obtained from diet either as preformed vitamin A or as carotenoids. Retinal plays a biological role in vision, but most of the effects of vitamin A are exerted by retinoic acid, which binds to nuclear receptors and regulates gene transcrip …
It is obtained from diet either as preformed vitamin A or as carotenoids. Retinal plays a biological role in vision, bu …
Effects of vitamin A on carcass and meat quality of broilers.
Savaris VDL, Broch J, de Souza C, Rohloff Junior N, de Avila AS, Polese C, Kaufmann C, de Oliveira Carvalho PL, Pozza PC, Vieites FM, Nunes RV. Savaris VDL, et al. Poult Sci. 2021 Dec;100(12):101490. doi: 10.1016/j.psj.2021.101490. Epub 2021 Sep 17. Poult Sci. 2021. PMID: 34768044 Free PMC article.
This study evaluated the level and length of time of vitamin A supplementation and its effects on carcass and cuts yield, meat quality, and myopathies in 42-day-old broilers. ...The remaining birds were slaughtered and evaluated in loco for Wooden Breast (WB) and Wh …
This study evaluated the level and length of time of vitamin A supplementation and its effects on carcass and cuts yield, meat …
Non-pro-vitamin A and pro-vitamin A carotenoids in atopy development.
Rühl R. Rühl R. Int Arch Allergy Immunol. 2013;161(2):99-115. doi: 10.1159/000345958. Epub 2013 Jan 22. Int Arch Allergy Immunol. 2013. PMID: 23343622 Review.
Carotenoids are important derivatives of the human diet and occur in high concentrations in the human organism. Various carotenoids are also present in human breast milk and are transferred to breast-fed children. ...In this review, the mechanisms of action of the most imp …
Carotenoids are important derivatives of the human diet and occur in high concentrations in the human organism. Various carotenoids a …
Meeting the Vitamin A Requirement: The Efficacy and Importance of beta-Carotene in Animal Species.
Green AS, Fascetti AJ. Green AS, et al. ScientificWorldJournal. 2016;2016:7393620. doi: 10.1155/2016/7393620. Epub 2016 Oct 19. ScientificWorldJournal. 2016. PMID: 27833936 Free PMC article. Review.
Vitamin A is essential for life in all vertebrate animals. Vitamin A requirement can be met from dietary preformed vitamin A or provitamin A carotenoids, the most important of which is beta-carotene. The metabolism of beta-carotene, inclu …
Vitamin A is essential for life in all vertebrate animals. Vitamin A requirement can be met from dietary preform …
Aggregate exposure modelling of vitamin A from cosmetic products, diet and food supplements.
Tozer S, O'Mahony C, Hannah J, O'Brien J, Kelly S, Kosemund-Meynen K, Alexander-White C. Tozer S, et al. Food Chem Toxicol. 2019 Sep;131:110549. doi: 10.1016/j.fct.2019.05.057. Epub 2019 May 31. Food Chem Toxicol. 2019. PMID: 31158403 Free article.
Realism is important in estimating consumer exposure to a substance, especially when accounting for exposure from multiple sources. Humans are exposed to vitamin A from food, dietary supplements and cosmetics products. A probabilistic aggregate exposure model was de …
Realism is important in estimating consumer exposure to a substance, especially when accounting for exposure from multiple sources. Humans a …
Vitamin A and marbling attributes: Intramuscular fat hyperplasia effects in cattle.
Kruk ZA, Bottema MJ, Reyes-Veliz L, Forder REA, Pitchford WS, Bottema CDK. Kruk ZA, et al. Meat Sci. 2018 Mar;137:139-146. doi: 10.1016/j.meatsci.2017.11.024. Epub 2017 Nov 21. Meat Sci. 2018. PMID: 29182958
Twenty Angus steers were fed a diet low in beta-carotene and vitamin A for 10months. Ten steers were supplemented with vitamin A weekly, while the other ten steers did not receive any additional vitamin A. ...This may explain why …
Twenty Angus steers were fed a diet low in beta-carotene and vitamin A for 10months. Ten steers were supplemented with …
Effect of feeding a low-vitamin A diet on carcass and production characteristics of steers with a high or low propensity for marbling.
Knutson EE, Menezes ACB, Sun X, Fontoura ABP, Liu JH, Bauer ML, Maddock-Carlin KR, Swanson KC, Ward AK. Knutson EE, et al. Animal. 2020 Nov;14(11):2308-2314. doi: 10.1017/S1751731120001135. Epub 2020 Jun 10. Animal. 2020. PMID: 32517827 Free article.
Therefore, the aim of this study is to highlight the genotype variations in response to dietary vitamin A levels. Commercial Angus and Simmental steers (n = 32 per breed; initial BW = 337.2 5.9 kg; ~8 months of age) were fed a low-vitamin A (LVA) (1017 …
Therefore, the aim of this study is to highlight the genotype variations in response to dietary vitamin A levels. Commercial A …
Inverse association between dietary vitamin A intake and new-onset hypertension.
Zhang Y, Liu M, Zhou C, Zhang Z, He P, Li Q, Liu C, Qin X. Zhang Y, et al. Clin Nutr. 2021 May;40(5):2868-2875. doi: 10.1016/j.clnu.2021.04.004. Epub 2021 Apr 18. Clin Nutr. 2021. PMID: 33940400
BACKGROUND & AIMS: The prospective relation of dietary vitamin A intake with hypertension remains uncertain. We aimed to investigate the relationship of dietary vitamin A intake with new-onset hypertension and examine possible effect modifiers in g …
BACKGROUND & AIMS: The prospective relation of dietary vitamin A intake with hypertension remains uncertain. We aimed to i …
7,792 results