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Results by year

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

Year Number of Results
1920 3
1921 2
1922 6
1923 3
1924 5
1925 10
1926 5
1927 6
1928 12
1929 9
1930 14
1931 16
1932 25
1933 23
1934 30
1935 16
1936 12
1937 13
1938 21
1939 23
1940 12
1941 24
1942 19
1943 14
1944 15
1945 44
1946 100
1947 138
1948 158
1949 110
1950 162
1951 189
1952 191
1953 173
1954 140
1955 171
1956 117
1957 139
1958 145
1959 116
1960 205
1961 240
1962 140
1963 211
1964 267
1965 176
1966 152
1967 152
1968 156
1969 196
1970 146
1971 179
1972 188
1973 166
1974 187
1975 280
1976 278
1977 238
1978 250
1979 284
1980 265
1981 265
1982 296
1983 348
1984 401
1985 423
1986 359
1987 428
1988 439
1989 468
1990 495
1991 519
1992 587
1993 659
1994 644
1995 728
1996 759
1997 751
1998 716
1999 810
2000 826
2001 830
2002 847
2003 877
2004 875
2005 941
2006 861
2007 977
2008 968
2009 1006
2010 1058
2011 1127
2012 1277
2013 1217
2014 1296
2015 1255
2016 1217
2017 1280
2018 1256
2019 1451
2020 1534
2021 1680
2022 1733
2023 1585
2024 1209
2025 1

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Search Results

42,816 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.
Preformed vitamin A (all-trans-retinol and its esters) and provitamin A (beta-carotene) are essential dietary nutrients that provide a source of retinol. ...Thus far, correlative epidemiological studies on vitamin A use and cancer prevent …
Preformed vitamin A (all-trans-retinol and its esters) and provitamin A (beta-carotene) are essential dietary nu …
Golden Rice is an effective source of vitamin A.
Tang G, Qin J, Dolnikowski GG, Russell RM, Grusak MA. Tang G, et al. Am J Clin Nutr. 2009 Jun;89(6):1776-83. doi: 10.3945/ajcn.2008.27119. Epub 2009 Apr 15. Am J Clin Nutr. 2009. PMID: 19369372 Free PMC article. Clinical Trial.
BACKGROUND: Genetically engineered "Golden Rice" contains up to 35 microg beta-carotene per gram of rice. It is important to determine the vitamin A equivalency of Golden Rice beta-carotene to project the potential effect of this bioforti …
BACKGROUND: Genetically engineered "Golden Rice" contains up to 35 microg beta-carotene per gram of rice. It is important to d …
The contribution of beta-carotene to vitamin A supply of humans.
Weber D, Grune T. Weber D, et al. Mol Nutr Food Res. 2012 Feb;56(2):251-8. doi: 10.1002/mnfr.201100230. Epub 2011 Sep 29. Mol Nutr Food Res. 2012. PMID: 21957049 Review.
Our aim was to estimate the contribution of beta-carotene to vitamin A supply in industrialized countries using available data from the literature. ...Mean total daily dietary intake of RAE was 1083175. The mean beta-carotene intake was 3 …
Our aim was to estimate the contribution of beta-carotene to vitamin A supply in industrialized countries using …
Improving the nutritional value of Golden Rice through increased pro-vitamin A content.
Paine JA, Shipton CA, Chaggar S, Howells RM, Kennedy MJ, Vernon G, Wright SY, Hinchliffe E, Adams JL, Silverstone AL, Drake R. Paine JA, et al. Nat Biotechnol. 2005 Apr;23(4):482-7. doi: 10.1038/nbt1082. Epub 2005 Mar 27. Nat Biotechnol. 2005. PMID: 15793573
"Golden Rice" is a variety of rice engineered to produce beta-carotene (pro-vitamin A) to help combat vitamin A deficiency, and it has been predicted that its contribution to alleviating vitamin A deficiency would be substan …
"Golden Rice" is a variety of rice engineered to produce beta-carotene (pro-vitamin A) to help combat vitamin …
The role of beta-carotene and vitamin A in atherogenesis: Evidences from preclinical and clinical studies.
Miller AP, Coronel J, Amengual J. Miller AP, et al. Biochim Biophys Acta Mol Cell Biol Lipids. 2020 Nov;1865(11):158635. doi: 10.1016/j.bbalip.2020.158635. Epub 2020 Jan 21. Biochim Biophys Acta Mol Cell Biol Lipids. 2020. PMID: 31978554 Free PMC article. Review.
Epidemiological and mechanistic studies indicate that beta-carotene and its vitamin A derivatives stimulate lipid catabolism in several tissues to reduce the incidence of obesity, but their roles within ASCVD are elusive. Herein, we review the mechanis …
Epidemiological and mechanistic studies indicate that beta-carotene and its vitamin A derivatives stimulate lipi …
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 bet …
Vitamin A is essential for life in all vertebrate animals. Vitamin A requirement can be met from dietary preform …
From beta-Carotene to Retinoids: A Review of Microbial Production of Vitamin A.
Zhang Y, Yu H, Ye L. Zhang Y, et al. J Agric Food Chem. 2024 Sep 25;72(38):20752-20762. doi: 10.1021/acs.jafc.4c06851. Epub 2024 Sep 16. J Agric Food Chem. 2024. PMID: 39285668 Review.
Vitamin A (retinoids) is crucial for human health, with significant demand across the food, pharmaceutical, and animal feed industries. ...This review introduces the key enzymes involved in the biosynthesis of vitamin A from beta-carotene …
Vitamin A (retinoids) is crucial for human health, with significant demand across the food, pharmaceutical, and animal feed in …
Fenretinide inhibits vitamin A formation from beta-carotene and regulates carotenoid levels in mice.
Miller AP, Black M, Amengual J. Miller AP, et al. Biochim Biophys Acta Mol Cell Biol Lipids. 2022 Feb;1867(2):159070. doi: 10.1016/j.bbalip.2021.159070. Epub 2021 Nov 4. Biochim Biophys Acta Mol Cell Biol Lipids. 2022. PMID: 34742949 Free PMC article.
Cell culture and in vitro studies show that fenretinide binds and inhibits the activity of beta-carotene oxygenase 1 (BCO1), the enzyme responsible for endogenous vitamin A formation. Whether fenretinide inhibits vitamin A synthesis in ma …
Cell culture and in vitro studies show that fenretinide binds and inhibits the activity of beta-carotene oxygenase 1 (BCO1), t …
A review of vitamin A equivalency of beta-carotene in various food matrices for human consumption.
Van Loo-Bouwman CA, Naber TH, Schaafsma G. Van Loo-Bouwman CA, et al. Br J Nutr. 2014 Jun 28;111(12):2153-66. doi: 10.1017/S0007114514000166. Epub 2014 Feb 11. Br J Nutr. 2014. PMID: 24513222 Review.
Vitamin A equivalency of beta-carotene (VEB) is defined as the amount of ingested beta-carotene in mug that is absorbed and converted into 1 mug retinol (vitamin A) in the human body. ...The VEB is currently estimated by the …
Vitamin A equivalency of beta-carotene (VEB) is defined as the amount of ingested beta-carotene in …
Beta-carotene, vitamin A and prostatic cancer.
Virtamo J, Huttunen JK. Virtamo J, et al. Ann Med. 1992 Jun;24(3):143-4. doi: 10.3109/07853899209147810. Ann Med. 1992. PMID: 1627305 Free article. No abstract available.
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