Abstract:
:In the past, alcoholic liver disease was attributed exclusively to dietary deficiencies, but experimental and judicious clinical studies have now established alcohol's hepatotoxicity. Despite an adequate diet, it can contribute to the entire spectrum of liver diseases, mainly by generating oxidative stress through its microsomal metabolism via cytochrome P4502E1 (CYP2E1). It also interferes with nutrient activation, resulting in changes in nutritional requirements. This is exemplified by methionine, one of the essential amino acids for humans, which needs to be activated to S-adenosylmethionine (SAMe), a process impaired by liver disease. Thus, SAMe rather than methionine is the compound that must be supplemented in the presence of significant liver disease. In baboons, SAMe attenuated mitochondrial lesions and replenished glutathione; it also significantly reduced mortality in patients with Child A or B cirrhosis. Similarly, decreased phosphatidylethanolamine methyltransferase activity is associated with alcoholic liver disease, resulting in phosphatidylcholine depletion and serious consequences for the integrity of membranes. This can be offset by polyenylphosphatidylcholine (PPC), a mixture of polyunsaturated phosphatidylcholines comprising dilinoleoylphosphatidylcholine (DLPC), which has high bioavailability. PPC (and DLPC) opposes major toxic effects of alcohol, with down-regulation of CYP2E1 and reduction of oxidative stress, deactivation of hepatic stellate cells, and increased collagenase activity, which in baboons, results in prevention of ethanol-induced septal fibrosis and cirrhosis. Corresponding clinical trials are ongoing.
journal_name
Annu Rev Nutrjournal_title
Annual review of nutritionauthors
Lieber CSdoi
10.1146/annurev.nutr.20.1.395subject
Has Abstractpub_date
2000-01-01 00:00:00pages
395-430eissn
0199-9885issn
1545-4312pii
20/1/395journal_volume
20pub_type
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journal_title:Annual review of nutrition
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journal_title:Annual review of nutrition
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journal_title:Annual review of nutrition
pub_type: 杂志文章,评审
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更新日期:2011-08-21 00:00:00
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journal_title:Annual review of nutrition
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更新日期:2006-01-01 00:00:00
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journal_title:Annual review of nutrition
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更新日期:2000-01-01 00:00:00
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journal_title:Annual review of nutrition
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更新日期:2006-01-01 00:00:00
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更新日期:2013-01-01 00:00:00
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journal_title:Annual review of nutrition
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更新日期:2003-01-01 00:00:00
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journal_title:Annual review of nutrition
pub_type: 杂志文章,评审
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更新日期:1996-01-01 00:00:00
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journal_title:Annual review of nutrition
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journal_title:Annual review of nutrition
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journal_title:Annual review of nutrition
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更新日期:2006-01-01 00:00:00
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journal_title:Annual review of nutrition
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更新日期:2004-01-01 00:00:00
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journal_title:Annual review of nutrition
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更新日期:1998-01-01 00:00:00
abstract::The low-density lipoprotein (LDL) receptor (LDL-R) family consists of cell-surface receptors that recognize extracellular ligands and internalize them for degradation by lysosomes. The LDL-R is the prototype of this family, which also contains very-low-density lipoprotein receptors (VLDL-R), apolipoprotein E receptor ...
journal_title:Annual review of nutrition
pub_type: 杂志文章,评审
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更新日期:1999-01-01 00:00:00
abstract::Maternal micronutrient requirements during pregnancy increase to meet the physiologic changes in gestation and fetal demands for growth and development. Maternal micronutrient deficiencies are high and coexist in many settings, likely influencing birth and newborn outcomes. The only recommendation for pregnancy curren...
journal_title:Annual review of nutrition
pub_type: 杂志文章,评审
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更新日期:2010-08-21 00:00:00
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journal_title:Annual review of nutrition
pub_type: 杂志文章,评审
doi:10.1146/annurev.nu.16.070196.000445
更新日期:1996-01-01 00:00:00
abstract::The discovery of multiple selenoproteins has raised tantalizing questions about their role in maintaining normal cellular function. Unfortunately, many of these remain inadequately investigated. While they have a role in maintaining redox balance, other functions are becoming increasingly recognized. As the roles of t...
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pub_type: 杂志文章,评审
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更新日期:2012-08-21 00:00:00
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journal_title:Annual review of nutrition
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更新日期:2016-07-17 00:00:00