Results 1 to 10 of about 287 (117)

Chemical and Biological Significance of Oenothein B and Related Ellagitannin Oligomers with Macrocyclic Structure [PDF]

Molecules, 2018
In 1990, Okuda et al. reported the first isolation and characterization of oenothein B, a unique ellagitannin dimer with a macrocyclic structure, from the Oenothera erythrosepala leaves.
Takashi Yoshida, Morio Yoshimura, Yoshiaki Amakura   +2 more
doaj   +7 more sources

Oenothein B, a Bioactive Ellagitannin, Activates the Extracellular Signal-Regulated Kinase 2 Signaling Pathway in the Mouse Brain [PDF]

Plants, 2021
(1) Background: Oenothein B, a cyclic dimeric ellagitannin present in various medicinal plants, has been reported to exert diverse effects that are beneficial for the treatment and prevention of diseases, including cancer and infections.
Satoshi Okuyama, Yoshiko Furukawa, Morio Yoshimura, Yoshiaki Amakura, Mitsunari Nakajima, Takashi Yoshida   +5 more
doaj   +7 more sources

Oenothein B in Eucalyptus Leaf Extract Suppresses Fructose Absorption in Caco-2 Cells [PDF]

Molecules, 2021
Inhibition of fructose absorption may suppress adiposity and adiposity-related diseases caused by fructose ingestion. Eucalyptus leaf extract (ELE) inhibits intestinal fructose absorption (but not glucose absorption); however, its active compound has not
Keiichiro Sugimoto, Midori Amako, Hiroaki Takeuchi, Kazuya Nakagawa, Morio Yoshimura, Yoshiaki Amakura, Tomoyuki Fujita, Shigeo Takenaka, Hiroshi Inui   +8 more
doaj   +5 more sources

Oenothein B, a cyclic dimeric ellagitannin isolated from Epilobium angustifolium, enhances IFNγ production by lymphocytes. [PDF]

PLoS ONE, 2012
Oenothein B is a polyphenol isolated from Epilobium angustifolium and other plant sources, which has been reported to exhibit immunomodulatory properties.
Andrew G Ramstead, Igor A Schepetkin, Mark T Quinn, Mark A Jutila   +3 more
doaj   +5 more sources

Myrtle Seeds (Myrtus communis L.) as a Rich Source of the Bioactive Ellagitannins Oenothein B and Eugeniflorin D2 [PDF]

ACS Omega, 2019
The increasing popularity of "Mirto" liqueur, produced from Myrtus communis berries, has led to the planting of domesticated cultivars, expanding myrtle berry production. To promote the use of cultivated berries, the content in the nutraceutical compounds ellagitannins has been investigated both in spontaneous and cultivated fruits.
Andrea M. Franco, Noemi Tocci, Graziano Guella, Mario Dell’Agli, Enrico Sangiovanni, Daniele Perenzoni, Urska Vrhovsek, Fulvio Mattivi, Gavina Manca   +8 more
doaj   +6 more sources

Activation of Extracellular Signal-Regulated Kinase 2 and cAMP Response Element-Binding Protein in Cultured Neurons by the Macrocyclic Ellagitannin Oenothein B [PDF]

NeuroSci, 2022
(1) Background: The findings of our recent in vivo study indicated that the oral administration of oenothein B, a unique macrocyclic ellagitannin, activated extracellular signal-regulated kinase (ERK) 2 and cAMP response element-binding protein (CREB) in
Satoshi Okuyama, Morio Yoshimura, Yoshiaki Amakura, Mitsunari Nakajima, Yoshiko Furukawa   +4 more
doaj   +2 more sources

An Optimized Method for Extracting Oenothein B from Eucalyptus Leaves

BioResources, 2022
Eucalyptus is a fast-growing and high-yield tree species producing approximately one third of the timber of the world. Eucalyptus leaves are a by-product of timber with comparable biomass, and are largely unused. Eucalyptus leaves are rich in polyphenols,
Yating Deng, Ziyi Tan, Xiaoqi Dang, Rongjie Mao, Siyu Long, Wei Li, Meng Li   +6 more
doaj   +4 more sources

Oenothein B ameliorates hepatic injury in alcoholic liver disease mice by improving oxidative stress and inflammation and modulating the gut microbiota [PDF]

Frontiers in Nutrition, 2022
IntroductionAlcoholic liver disease (ALD) is a global health problem for which there is no current food and drug administration (FDA)-approved therapy. Oenothein B (OEB) is a macrocyclic dimer ellagic tannin that possesses abundant biological activities ...
Lu Xu, Wei Li, Shu-yi Chen, Xi-wen Deng, Wei-feng Deng, Guo Liu, Yun-jiao Chen, Yong Cao   +7 more
doaj   +2 more sources

Phenological Variations in the Content of Polyphenols and Triterpenoids in Epilobium angustifolium Herb Originating from Ukraine [PDF]

Plants, 2023
The composition of secondary metabolites undergoes significant changes in plants depending on the growth phase and the influence of environmental factors.
Liudas Ivanauskas, Kateryna Uminska, Zigmantas Gudžinskas, Michael Heinrich, Victoriya Georgiyants, Alla Kozurak, Olha Mykhailenko   +6 more
doaj   +2 more sources

Effect of Fireweed (Chamerion angustifolium L.) Extracts and Oenothein B on Colon Cancer Cells: Impact of Leaf Fermentation on Viability and Mitochondrial Function [PDF]

Medicina
Background and Objectives: Fireweed (Chamerion angustifolium L.) possesses antibacterial, antioxidant, anti-inflammatory, and anti-cancer properties. This study evaluated the effects of aqueous fireweed leaf extracts and their major compound, oenothein B,
Dovile Uogintaite, Rasa Baniene, Aldona Jasukaitiene, Mindaugas Marksa, Marius Lasinskas, Elvyra Jariene, Sonata Trumbeckaite   +6 more
doaj   +2 more sources