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Journal ArticleDOI

Ursolic acid : An anti-and pro-inflammatory triterpenoid

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TLDR
Ursolic acid (UA), a natural pentacyclic triterpenoid carboxylic acid, is the major component of some traditional medicine herbs and is well known to possess a wide range of biological functions that are able to counteract endogenous and exogenous biological stimuli.
Abstract
There is growing interest in the elucidation of the biological functions of triterpenoids, ubiquitously distributed throughout the plant kingdom, some of which are used as anticancer and anti-inflammatory agents in Asian countries. Ursolic acid (UA), a natural pentacyclic triterpenoid carboxylic acid, is the major component of some traditional medicine herbs and is well known to possess a wide range of biological functions, such as antioxidative, anti-inflammation, and anticancer activities, that are able to counteract endogenous and exogenous biological stimuli. In contrast to these beneficial properties, some laboratory studies have recently revealed that the effects of UA on normal cells and tissues are occasionally pro-inflammatory. Thus, UA may be designated as a double-edged sword with both positive and negative effects, and further evaluations of the effects of UA on the biological status of target cells or tissues are necessary. This review summarizes previous and current information regarding UA, and provides new insights into the underlying molecular mechanisms of its activities.

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Ursolic acid in cancer prevention and treatment: Molecular targets, pharmacokinetics and clinical studies

TL;DR: This review not only summarizes the diverse molecular targets of ursolic acid, but also provides an insight into the various preclinical and clinical studies that have been performed in the last decade with this promising triterpenoid.
Journal ArticleDOI

Cranberries and Their Bioactive Constituents in Human Health

TL;DR: Evidence suggesting that cranberries may decrease the recurrence of urinary tract infections is important because a nutritional approach to this condition could lower the use of antibiotic treatment and the consequent development of resistance to these drugs.
Journal ArticleDOI

Potent Anti-Inflammatory Activity of Ursolic Acid, a Triterpenoid Antioxidant, Is Mediated through Suppression of NF-κB, AP-1 and NF-AT

TL;DR: Ursolic acid treatment inhibited T cell activation even when added post-mitogenic stimulation demonstrating its therapeutic utility as an anti-inflammatory agent.
Journal ArticleDOI

Ursolic Acid Suppresses Interleukin-17 (IL-17) Production by Selectively Antagonizing the Function of RORγt Protein *

TL;DR: It is shown that ursolic acid (UA), a small molecule present in herbal medicine, selectively and effectively inhibits the function of RORγt, resulting in greatly decreased IL-17 expression in both developing and differentiated Th17 cells.
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Traditional Uses, Phytochemistry, and Pharmacology of Olea europaea (Olive)

TL;DR: The outcomes of phytochemical and pharmacological studies reported in this review will further expand its existing therapeutic potential and provide a convincing support to its future clinical use in modern medicine.
References
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Journal ArticleDOI

Oxidants as stimulators of signal transduction

TL;DR: Reactive oxygen species may be second messengers for transcription factor activation, apoptosis, bone resorption, cell growth, and chemotaxis as well as the mechanisms of the oxidant-stimulation of signal transduction are discussed.
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Pharmacology of oleanolic acid and ursolic acid

TL;DR: Both oleanolic acid and ursolic acid are effective in protecting against chemically induced liver injury in laboratory animals and have been noted for their antitumor-promotion effects, which are stimulating additional research in this field.
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Isoprenoid biosynthesis in bacteria: a novel pathway for the early steps leading to isopentenyl diphosphate.

TL;DR: Results confirmed the earlier results obtained by incorporation of 13C-labelled acetate into the hopanoids of other bacteria and led to the identification of a novel biosynthetic route for the early steps of isoprenoid biosynthesis.
Journal ArticleDOI

Rules for making human tumor cells.

TL;DR: The authors propose a considerably simplified scheme in which only five alterations are required to transform cells from a normal to a malignant phenotype.
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