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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 251
1979 283
1980 266
1981 265
1982 298
1983 348
1984 401
1985 423
1986 359
1987 429
1988 440
1989 470
1990 495
1991 519
1992 587
1993 659
1994 644
1995 728
1996 760
1997 752
1998 717
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 1216
2014 1298
2015 1254
2016 1217
2017 1280
2018 1256
2019 1454
2020 1533
2021 1676
2022 1729
2023 443
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Search Results

40,691 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. Both retinyl esters and beta-carotene are metabolized to retinol. The retinol-binding prote …
Preformed vitamin A (all-trans-retinol and its esters) and provitamin A (beta-carotene) are essential dietary nutrients …
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 biofortified gr …
BACKGROUND: Genetically engineered "Golden Rice" contains up to 35 microg beta-carotene per gram of rice. It is important to d …
Vitamin A in health care: Suppression of growth and induction of differentiation in cancer cells by vitamin A and its derivatives and their mechanisms of action.
Takahashi N, Saito D, Hasegawa S, Yamasaki M, Imai M. Takahashi N, et al. Pharmacol Ther. 2022 Feb;230:107942. doi: 10.1016/j.pharmthera.2021.107942. Epub 2021 Jun 24. Pharmacol Ther. 2022. PMID: 34175370 Review.
In addition, beta-carotene (pro-vitamin A) is a precursor of vitamin A contained in green and yellow vegetables that is converted to retinol in the body after ingestion. ...Thus, the effects of retinal and RA are well known. In this paper, we will intr …
In addition, beta-carotene (pro-vitamin A) is a precursor of vitamin A contained in green and yellow vegetables …
Fenretinide inhibits vitamin A formation from β-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 mammals, however …
Cell culture and in vitro studies show that fenretinide binds and inhibits the activity of beta-carotene oxygenase 1 (BCO1), t …
The contribution of β-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 3.9 mg/d …
Our aim was to estimate the contribution of beta-carotene to vitamin A supply in industrialized countries using availab …
Associations of Dietary Vitamin A and Beta-Carotene Intake With Depression. A Meta-Analysis of Observational Studies.
Zhang Y, Ding J, Liang J. Zhang Y, et al. Front Nutr. 2022 Apr 25;9:881139. doi: 10.3389/fnut.2022.881139. eCollection 2022. Front Nutr. 2022. PMID: 35548582 Free PMC article.
OBJECTIVE: To clarify the associations of dietary vitamin A and beta-carotene intake with depression based on a meta-analysis of observational studies. ...CONCLUSION: Our results suggest that both dietary vitamin A and beta-carotene intak …
OBJECTIVE: To clarify the associations of dietary vitamin A and beta-carotene intake with depression based on a meta-an …
Dietary β-carotene and vitamin A and risk of Parkinson disease: A protocol for systematic review and meta-analysis.
Wu LY, Chen JX, Chen GS, Gao H, Huo JH, Pang YF, Gao QH. Wu LY, et al. Medicine (Baltimore). 2022 Oct 14;101(41):e31002. doi: 10.1097/MD.0000000000031002. Medicine (Baltimore). 2022. PMID: 36253999 Free PMC article.
BACKGROUND: The beneficial effects of dietary beta-carotene and vitamin A on Parkinson disease (PD) have been confirmed, but some studies have yielded questionable results. ...The studies included were as follows: beta-carotene and vitamin …
BACKGROUND: The beneficial effects of dietary beta-carotene and vitamin A on Parkinson disease (PD) have been confirmed …
Meeting the Vitamin A Requirement: The Efficacy and Importance of β-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 …
Vitamin A is essential for life in all vertebrate animals. Vitamin A requirement can be met from dietary preformed vitamin …
A review of vitamin A equivalency of β-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 US Institute …
Vitamin A equivalency of beta-carotene (VEB) is defined as the amount of ingested beta-carotene in mug th …
The role of β-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.
Atherosclerotic cardiovascular disease (ASCVD) is the principal contributor to myocardial infarction, the leading cause of death worldwide. Epidemiological and mechanistic studies indicate that beta-carotene and its vitamin A derivatives stimulate lipid catab …
Atherosclerotic cardiovascular disease (ASCVD) is the principal contributor to myocardial infarction, the leading cause of death worldwide. …
40,691 results
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