Results 61 to 70 of about 6,408 (192)

Effect of magnetization on antibacterial, lipid-lowering and antioxidant activities of isoquinoline alkaloids

open access: yesScientific Reports
The magnetization strategy of isoquinoline alkaloids has been successfully used in the extraction and isolation, but the effect of the magnetization on biological activities of those alkaloids still deserves further investigation.
Xueting Feng   +4 more
doaj   +1 more source

Binding Parameters of Alkaloids Berberine and Sanguinarine with DNA

open access: yesUkrainian Journal of Physics, 2012
10 pages, 9 ...
Gumenyuk, V.G.   +4 more
openaire   +3 more sources

Advances in the Neurotoxic Mechanisms of Acrylamide and Multitarget Intervention Strategies of Natural Products

open access: yesFood Frontiers, Volume 7, Issue 4, July 2026.
This review summarizes recent advances in acrylamide neurotoxicity mechanisms and highlights the multitarget neuroprotective effects of diverse natural products while also addressing current challenges and future translational research directions.
Wen Du   +7 more
wiley   +1 more source

Antifungal alkaloids from Mahonia fortunei against pathogens of postharvest fruit

open access: yesNatural Products and Bioprospecting, 2023
Postharvest pathogens can affect a wide range of fresh fruit and vegetables, including grapes, resulting in significant profit loss. Isoquinoline alkaloids of Mahonia fortunei, a Chinese herbal medicine, have been used to treat infectious microbes, which
Xiao-Na Wang   +7 more
doaj   +1 more source

The Separation and the Determination of Berberine in the Phellodenron Alkaloids

open access: yesNippon kagaku zassi, 1962
オウバク末を50%V/Vメタノールの存在で,弱酸牲陽イオン交換樹脂(DuoliteCS-101,NH4形)とともに加温しながらふりまぜて,オウバク中アルカロイドを樹脂に吸着させる。粉末と樹脂とを逆洗法により分離したのち,樹脂をガラス管につめ水洗後,アンモニア水(1N),塩化アンモニウム(1N)および炭酸ナトリウム(1N)の順に通ずると,炭酸ナトリウム溶離部にはベルベリンが含まれる。炭酸ナトリウム溶離部を硫酸で弱酸性としたのち,電流滴定法によりベルベリンを定量した。その結果従来法(春日井法)にくらべて約2倍の高値を示した。
openaire   +2 more sources

A Unified Strategy for the Syntheses of the Isoquinolinium Alkaloids Berberine, Coptisine, and Jatrorrhizine [PDF]

open access: yesOrganic Letters, 2018
Total syntheses of the antibacterial alkaloids berberine, coptisine, and jatrorrhizine have been achieved in four steps through a unified route. The key step of this strategy is an efficient intramolecular Friedel-Crafts alkoxyalkylation which, following oxidation, establishes the isoquinolinium core of these natural products.
Luis M. Mori-Quiroz   +3 more
openaire   +2 more sources

Research on the Mechanism of Natural Products Acting on Chronic Obstructive Pulmonary Disease

open access: yesFood Science &Nutrition, Volume 14, Issue 7, July 2026.
This figure illustrates that approximately 80 natural compounds exert therapeutic effects against chronic obstructive pulmonary disease by targeting pathological mechanisms such as airway inflammation, oxidative stress, airway remodeling, mucus hypersecretion, emphysema, protease–antiprotease imbalance, apoptosis, and autophagy.
Shuna Wei, Xiaoju Liu
wiley   +1 more source

Berberine suppresses migration of MCF-7 breast cancer cells through down-regulation of chemokine receptors [PDF]

open access: yesIranian Journal of Basic Medical Sciences, 2016
Objective(s): Berberine is one of the main alkaloids and it has been proven to have different pharmacological effects including inhibition of cell cycle and progression of apoptosis in various cancerous cells; however, its effects on cancer metastasis ...
Naghmeh Ahmadiankia   +7 more
doaj  

Transcriptional profile of theShigella flexneriresponse to an alkaloid: berberine [PDF]

open access: yesFEMS Microbiology Letters, 2010
Berberine, a natural isoquinoline alkaloid found in many medicinal herbs, has been shown to be active against a variety of microbial infections. To examine the potential effects of berberine on Shigella flexneri, a whole-genome DNA microarray was constructed and a transcriptome analysis of the cellular responses of S. flexneri when exposed to berberine
Hua, Fu   +5 more
openaire   +2 more sources

Phytochemicals in MASLD: A Focused Review of Gut Microbiome‐Linked Mechanisms

open access: yesPhytotherapy Research, Volume 40, Issue 7, Page 4041-4055, July 2026.
ABSTRACT Metabolic dysfunction‐associated steatotic liver disease (MASLD) has emerged as a major global health burden, yet effective pharmacological options remain limited. Recent advances highlight the gut microbiome as a key modulator of liver metabolism, inflammation, and fibrosis, making it a promising therapeutic target.
Jeong In Seo, Su Min Kim, Hye Hyun Yoo
wiley   +1 more source

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