Comparison of In Vitro and In Vivo Antioxidant Activities of Six Flavonoids with Similar Structures DOI Creative Commons

Yixiu Zeng,

Jiajia Song, Meimei Zhang

и другие.

Antioxidants, Год журнала: 2020, Номер 9(8), С. 732 - 732

Опубликована: Авг. 11, 2020

The in vitro and vivo antioxidant activities of six flavonoids with similar structures, including epicatechin (EC), epigallocatechin (EGC), procyanidin B2 (P), quercetin (Q), taxifolin (T), rutin (R) were compared. structures the their scavenging for 2,2-diphenyl-1-picrylhydrazyl (DPPH•) 2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS+) radicals closely related. decreased serum contents malondialdehyde (MDA) nitric oxide (NO), increased total antioxidative capacity (T-AOC), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px) levels to different degrees d-galactose-treated mice. changes mRNA expression liver GSH-Px1, CAT, SOD1, SOD2 by d-galactose dissimilarly restored flavonoids. Moreover, differentially prevented inflammatory response caused oxidative stress inhibiting interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF)-α levels, restoring IL-10 levels. These from two subclasses revealed following capability: P > EC, EGC Q T, R. Our results indicate that (1) pyrogallol, dimerization, C2=C3 double bonds enhanced activity (2) C3 glycosylation attenuated capacity.

Язык: Английский

Reactive oxygen species, toxicity, oxidative stress, and antioxidants: chronic diseases and aging DOI Creative Commons
Klaudia Jomová,

Renáta Raptová,

Suliman Yousef Alomar

и другие.

Archives of Toxicology, Год журнала: 2023, Номер 97(10), С. 2499 - 2574

Опубликована: Авг. 19, 2023

Abstract A physiological level of oxygen/nitrogen free radicals and non-radical reactive species (collectively known as ROS/RNS) is termed oxidative eustress or “good stress” characterized by low to mild levels oxidants involved in the regulation various biochemical transformations such carboxylation, hydroxylation, peroxidation, modulation signal transduction pathways Nuclear factor-κB (NF-κB), Mitogen-activated protein kinase (MAPK) cascade, phosphoinositide-3-kinase, nuclear factor erythroid 2–related 2 (Nrf2) other processes. Increased ROS/RNS, generated from both endogenous (mitochondria, NADPH oxidases) and/or exogenous sources (radiation, certain drugs, foods, cigarette smoking, pollution) result a harmful condition stress (“bad stress”). Although it widely accepted, that many chronic diseases are multifactorial origin, they share common denominator. Here we review importance mechanisms through which contributes pathological states an organism. Attention focused on chemistry ROS RNS (e.g. superoxide radical, hydrogen peroxide, hydroxyl radicals, peroxyl nitric oxide, peroxynitrite), their role damage DNA, proteins, membrane lipids. Quantitative qualitative assessment biomarkers also discussed. Oxidative pathology cancer, cardiovascular diseases, diabetes, neurological disorders (Alzheimer’s Parkinson’s Down syndrome), psychiatric (depression, schizophrenia, bipolar disorder), renal disease, lung disease (chronic pulmonary obstruction, cancer), aging. The concerted action antioxidants ameliorate effect achieved antioxidant enzymes (Superoxide dismutases-SODs, catalase, glutathione peroxidase-GPx), small molecular weight (vitamins C E, flavonoids, carotenoids, melatonin, ergothioneine, others). Perhaps one most effective vitamin first line defense against peroxidation promising approach appears be use flavonoids), showing weak prooxidant properties may boost cellular systems thus act preventive anticancer agents. Redox metal-based enzyme mimetic compounds potential pharmaceutical interventions sirtuins therapeutic targets for age-related anti-aging strategies

Язык: Английский

Процитировано

889

Oxidative stress and inflammation in osteoarthritis pathogenesis: Role of polyphenols DOI Open Access
Mohammad Y. Ansari, Nashrah Ahmad, Tariq M. Haqqi

и другие.

Biomedicine & Pharmacotherapy, Год журнала: 2020, Номер 129, С. 110452 - 110452

Опубликована: Июль 3, 2020

Osteoarthritis (OA) is the most prevalent joint degenerative disease leading to irreversible structural and functional changes in a major cause of disability reduced life expectancy ageing population. Despite high prevalence OA, there no modifying drug available for management OA. Oxidative stress, result an imbalance between production reactive oxygen species (ROS) their clearance by antioxidant defense system, OA cartilage chronic inflammation. Inflammatory mediators, such as interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α) interleukin-6 (IL-6) are highly upregulated joints induce ROS expression matrix degrading proteases extracellular degradation dysfunction. inflammation interdependent, each being target other represent ideal target/s treatment Plant polyphenols possess potent anti-inflammatory properties can inhibit chondrocytes, explants animal models The aim this review discuss chondroprotective effects modulation different molecular pathways associated with pathogenesis limitations future prospects treatment.

Язык: Английский

Процитировано

469

Gut Microbiota and Dysbiosis in Alzheimer’s Disease: Implications for Pathogenesis and Treatment DOI Creative Commons
Shan Liu,

Jiguo Gao,

Mingqin Zhu

и другие.

Molecular Neurobiology, Год журнала: 2020, Номер 57(12), С. 5026 - 5043

Опубликована: Авг. 22, 2020

Understanding how gut flora influences gut-brain communications has been the subject of significant research over past decade. The broadening term "microbiota-gut-brain axis" from "gut-brain underscores a bidirectional communication system between and brain. microbiota-gut-brain axis involves metabolic, endocrine, neural, immune pathways which are crucial for maintenance brain homeostasis. Alterations in composition microbiota associated with multiple neuropsychiatric disorders. Although causal relationship dysbiosis neural dysfunction remains elusive, emerging evidence indicates that may promote amyloid-beta aggregation, neuroinflammation, oxidative stress, insulin resistance pathogenesis Alzheimer's disease (AD). Illustration mechanisms underlying regulation by pave way developing novel therapeutic strategies AD. In this narrative review, we provide an overview their dysregulation Novel insights into modification as preventive or approach AD highlighted.

Язык: Английский

Процитировано

326

Use of Alcalase in the production of bioactive peptides: A review DOI
Veymar G. Tacias-Pascacio, Roberto Morellon‐Sterling,

El-Hocine Siar

и другие.

International Journal of Biological Macromolecules, Год журнала: 2020, Номер 165, С. 2143 - 2196

Опубликована: Окт. 20, 2020

Язык: Английский

Процитировано

254

Pathological mechanisms and therapeutic strategies for Alzheimer’s disease DOI Creative Commons
Kin Yip Tam,

Yaojun Ju

Neural Regeneration Research, Год журнала: 2021, Номер 17(3), С. 543 - 543

Опубликована: Авг. 20, 2021

Alzheimer's disease is a rather complex neurodegenerative disease, which attributed to combination of multiple factors. Among the many pathological pathways, synaptic dysfunctions, such as synapses loss and deficits in plasticity, were thought be strongly associated with cognitive decline. The deficiencies various sorts neurotransmissions are responsible for multifarious symptoms example, cholinergic glutamatergic decline, excitatory inhibitory neurotransmission dyshomeostasis plasticity epileptiform symptoms, monoamine neuropsychiatric symptoms. Amyloid cascade hypothesis most popular theory explain pathogenesis attracts considerable attention. Multiple lines genetic evidence support predominant role amyloid beta pathology. Neurofibrillary tangles assembled by microtubule-associated protein tau other important histopathological characteristics brains. Cascade toxicity was proved lead neuron damage, neuroinflammation oxidative stress brain. Ageing main risk factor diseases, inflammation, stress, reduced metabolism, endocrine insufficiencies organ failures. These aging related factors also some contributing disease. In drug development, good therapeutic strategies have been investigated clinical evaluations. However, mechanism interplay among different call come out all-powerful therapies curing functions. This review seeks summarize representative treatments targeting pathways currently under Multi-target an emerging strategy treatment will highlighted.

Язык: Английский

Процитировано

254

Health Benefits of Quercetin in Age-Related Diseases DOI Creative Commons

Deepika,

Pawan Kumar Maurya

Molecules, Год журнала: 2022, Номер 27(8), С. 2498 - 2498

Опубликована: Апрель 13, 2022

Polyphenols are the known group of phytochemicals that essentially consists phenolic rings. These plant product present in varied fruits and vegetables. secondary metabolites perform a protective function plants from environmental biological stress. When consumed as human diet these also to prevent various age-associated diseases. possess antioxidant properties protect against oxidative The literature survey was carried out using databases such PubMed, Science direct Springer. research articles last 10-12 years were selected for this review based on its relevancy with topic. mainly focused quercetin health benefits. highlights main functions flavonoid, quercetin. Quercetin is among widely occurring polyphenol, found abundantly nature. It commonly different products. Onion have highest quantity This compound possessed considered aging. be both free conjugated forms. has anti-oxidative, anti-inflammatory, anti-proliferative, anti-carcinogenic, anti-diabetic, anti-viral properties. molecule lipophilic can easily cross BBB (Blood-Brain Barrier) hence protects neurodegenerative Various vivo vitro studies demonstrated role here detailed curative agent neurodegeneration, diabetes, cancer, inflammation been out. Studies proved plays crucial prevention age-related disorders. potent which currently being used pharmaceuticals. Properties further explored other Nanoformulations liposomal formulations made treat age associated

Язык: Английский

Процитировано

244

Effect of Physical Activity/Exercise on Oxidative Stress and Inflammation in Muscle and Vascular Aging DOI Open Access
Mariam El Assar, Alejandro Álvarez‐Bustos, Patricia Sosa

и другие.

International Journal of Molecular Sciences, Год журнала: 2022, Номер 23(15), С. 8713 - 8713

Опубликована: Авг. 5, 2022

Functional status is considered the main determinant of healthy aging. Impairment in skeletal muscle and cardiovascular system, two interrelated systems, results compromised functional Increased oxidative stress inflammation older subjects constitute background for system alterations. Aged mass strength impairment related to anabolic resistance, mitochondrial dysfunction, increased as well a reduced antioxidant response myokine profile. Arterial stiffness endothelial function stand out alterations aging, where systemic vascular play key role. Physical activity exercise training arise modifiable determinants outcomes persons. Exercise enhances response, decreases age-related pro-inflammatory signals, promotes activation biogenesis pathways muscle. Additionally, improves arterial by reducing inflammatory damage signaling tissue together with an increase enzymes nitric oxide availability, globally promoting performance This review focuses on role aged musculoskeletal systems how physical activity/exercise influences elderly.

Язык: Английский

Процитировано

171

Cytotoxic effects of polystyrene nanoplastics with different surface functionalization on human HepG2 cells DOI

Yixin He,

Jing Li, Jiancheng Chen

и другие.

The Science of The Total Environment, Год журнала: 2020, Номер 723, С. 138180 - 138180

Опубликована: Март 24, 2020

Язык: Английский

Процитировано

169

Potential implications of polyphenols on aging considering oxidative stress, inflammation, autophagy, and gut microbiota DOI
Min Wu, Qingying Luo,

Rongxuan Nie

и другие.

Critical Reviews in Food Science and Nutrition, Год журнала: 2020, Номер 61(13), С. 2175 - 2193

Опубликована: Июнь 4, 2020

Naturally occurring compounds polyphenols are secondary metabolites of plants, comprised several categories, namely, flavonoids, phenolic acids, lignans and stilbenes. The biological aging process is driven by a series interrelated mechanisms, including oxidative stress, inflammation status, autophagy function, through diverse signaling pathways. Moreover, the crucial role gut microbiota in regulating health status was widely demonstrated. In recent years, potential anti-aging benefits have been gaining increasing scientific interest due to their capability modulate damage, inflammation, autophagy, microbiota. This review highlights influence preventing disorders augmenting lifespan based on microbiota, encourages research novel polyphenol-based strategies clinical trials develop nutrition-oriented holistic therapy.

Язык: Английский

Процитировано

143

Mitochondrial dysfunction in aging DOI
Ying Guo, Teng Guan,

Kashfia Shafiq

и другие.

Ageing Research Reviews, Год журнала: 2023, Номер 88, С. 101955 - 101955

Опубликована: Май 15, 2023

Язык: Английский

Процитировано

134