An enhanced method for the determination of polyamine content in biological samples by dansyl chloride derivatization and HPLC DOI

Ashley Nwafor,

Tracy Murray Stewart, Robert A. Casero

et al.

Methods in enzymology on CD-ROM/Methods in enzymology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Mechanisms of spermidine-induced autophagy and geroprotection DOI Open Access
Sebastian J. Hofer, Anna Katharina Simon, Martina Bergmann

et al.

Nature Aging, Journal Year: 2022, Volume and Issue: 2(12), P. 1112 - 1129

Published: Dec. 22, 2022

Language: Английский

Citations

100

Polyamine metabolite spermidine rejuvenates oocyte quality by enhancing mitophagy during female reproductive aging DOI
Yu Zhang, Jie Bai,

Zhaokang Cui

et al.

Nature Aging, Journal Year: 2023, Volume and Issue: 3(11), P. 1372 - 1386

Published: Oct. 16, 2023

Language: Английский

Citations

84

Emerging role of aging in the progression of NAFLD to HCC DOI
Yongyuan He,

Yinghong Su,

Chengcheng Duan

et al.

Ageing Research Reviews, Journal Year: 2022, Volume and Issue: 84, P. 101833 - 101833

Published: Dec. 22, 2022

Language: Английский

Citations

46

Antiaging effects of dietary supplements and natural products DOI Creative Commons

Lulu Gao,

Xudong Liu, Xiaoyan Luo

et al.

Frontiers in Pharmacology, Journal Year: 2023, Volume and Issue: 14

Published: June 27, 2023

Aging is an inevitable process influenced by genetics, lifestyles, and environments. With the rapid social economic development in recent decades, proportion of elderly has increased rapidly worldwide, many aging-related diseases have shown upward trend, including nervous system diseases, cardiovascular metabolic cancer. The rising burden become urgent global health challenge requires immediate attention solutions. Natural products been used for a long time to treat various human diseases. primary cellular pathways that mediate longevity-extending effects natural involve nutrient-sensing pathways. Among them, sirtuin, AMP-activated protein kinase, mammalian target rapamycin, p53, insulin/insulin-like growth factor-1 signaling are most widely studied. Several studies reviewed individual compounds on aging along with underlying mechanisms. from food sources, such as polyphenols, saponins, alkaloids, polysaccharides, classified antiaging promote prolong life via In this article, we several recently identified potential properties highlighted their molecular discovery use dietary supplements can prevent multiple humans will be beneficial. Thus, review provides theoretical background existing agents.

Language: Английский

Citations

28

Novel therapeutic strategies targeting myeloid-derived suppressor cell immunosuppressive mechanisms for cancer treatment DOI Creative Commons

Eric Jou,

Natasha Chaudhury,

Fizza Nasim

et al.

Exploration of Targeted Anti-tumor Therapy, Journal Year: 2024, Volume and Issue: 5(1), P. 187 - 207

Published: Feb. 28, 2024

Cancer is the leading cause of death globally superseded only by cardiovascular diseases, and novel strategies to overcome therapeutic resistance against existing cancer treatments are urgently required. Myeloid-derived suppressor cells (MDSCs) immature myeloid with potent immunosuppressive capacity well-established anti-tumour effectors such as natural killer (NK cells) T thereby promoting initiation progression. Critically, MDSCs readily identified in almost all tumour types human patients, numerous studies past decade have recognised their role contributing four pillars modern treatment, namely surgery, chemotherapy, radiotherapy immunotherapy. suppress immunity through a plethora mechanisms including well-characterised arginase 1 (Arg1), inducible nitric oxide synthase (iNOS) reactive oxygen species (ROS)-mediated pathways, along several other more recently discovered. largely absent healthy homeostatic states predominantly exist pathological conditions, making them attractive targets. However, lack specific markers for date greatly hindered development, currently there no clinically approved drugs that specifically target MDSCs. Methods deplete inhibit function will be crucial advancing treatment resistance. This review provides detailed overview current understandings behind MDSC-mediated suppression immunity, discusses potential MDSC

Language: Английский

Citations

9

Neuroinflammaging and the Immune Landscape: The Role of Autophagy and Senescence in Aging Brain DOI Creative Commons

Rajesh Tamatta,

Varsha Pai,

Charu Jaiswal

et al.

Biogerontology, Journal Year: 2025, Volume and Issue: 26(2)

Published: Feb. 5, 2025

Abstract Neuroinflammation is closely linked to aging, which damages the structure and function of brain. It caused by intricate interactions immune cells in aged brain, such as dysregulated glial dysfunctional astrocytes. Aging-associated chronic low inflammation, referred neuroinflammaging, shows an upregulated proinflammatory response. Autophagy senescence play crucial roles moderators aging neuroinflammatory responses. The neuroimmune system, dystrophic cells, release factors alter blood-brain barrier, causing a landscape. Chronic inflammation combined with deteriorating neurons exacerbate neurological disorders decline cognitive function. This review highlights neuroinflammaging mechanism associated interplay central nervous system cellular senescence, autophagy regulation brain's under conditions. Moreover, microglia peripheral process brain have also been discussed. Determining treatment targets comprehending mechanisms that influence necessary decrease neuroinflammation.

Language: Английский

Citations

1

Oxidative Stress-Induced Cellular Senescence in Aging Retina and Age-Related Macular Degeneration DOI Creative Commons
Ryo Terao, Tazbir Ahmed, Ayana Suzumura

et al.

Antioxidants, Journal Year: 2022, Volume and Issue: 11(11), P. 2189 - 2189

Published: Nov. 5, 2022

Aging leads to a gradual decline of function in multiple organs. Cataract, glaucoma, diabetic retinopathy, and age-related macular degeneration (AMD) are ocular diseases. Because their pathogenesis is unclear, it challenging combat Cellular senescence cellular response characterized by cell cycle arrest. an important contributor aging diseases through the alteration secretion senescence-associated secretory phenotypes. As driver stress-induced premature senescence, oxidative stress triggers inducing markers via reactive oxygen species mitochondrial dysfunction. In this review, we focused on mechanism retinal cells its role AMD.

Language: Английский

Citations

32

Spermidine alleviating oxidative stress and apoptosis by inducing autophagy of granulosa cells in Sichuan white geese DOI Creative Commons
Dongmei Jiang, Xin Wang, Xuemin Zhou

et al.

Poultry Science, Journal Year: 2023, Volume and Issue: 102(9), P. 102879 - 102879

Published: June 18, 2023

Spermidine have been reported a role in antioxidative, antiaging, and antiinflammatory. Oxidative stress causes granulosa cell (GC) apoptosis, follicular atresia, impairs poultry reproductive functions. Studies found that autophagy is the protective mechanism against antioxidant apoptosis cells. However, relationship between spermidine-induced autophagy, oxidative stress, goose GCs remains unclear. In this study, we investigated to mediate spermidine effects on alleviation of GCs. Follicular were treated with combination 3-Nitropropanoic acid (3-NPA), rapamycin (RAPA), chloroquine (CQ) or hydrogen peroxide, RAPA, CQ. upregulated ratio LC3-II/I, inhibited accumulation p62 protein, induced autophagy. 3-NPA treatment significantly increased ROS production, MDA content, SOD activity, cleaved CASPASE-3 protein expression, decreased BCL-2 expression by 3-NPA. addition, peroxide-induced was spermidine. inhibitory effect eliminated under chloroquine. Our results demonstrated relieved inducing indicating has great potential maintain proteostasis sustain viability geese.

Language: Английский

Citations

19

Monofloral Corn Poppy Bee-Collected Pollen—A Detailed Insight into Its Phytochemical Composition and Antioxidant Properties DOI Creative Commons
Aleksandar Ž. Kostić, Danijel D. Milinčić, Bojana Špirović‐Trifunović

et al.

Antioxidants, Journal Year: 2023, Volume and Issue: 12(7), P. 1424 - 1424

Published: July 14, 2023

The aim of this study was to compile a detailed phytochemical profile and assess the antioxidant properties bee-collected pollen (PBP) obtained from corn poppy (Papaver rhoeas L.) plants. To achieve this, lipid fraction prepared for quantifying fatty acids using GC-FID. Extractable alkaline-hydrolysable PBP fractions (obtained defatted sample) were used determine qualitative quantitative profiles phenolic compounds, phenylamides alkaloids UHPLC/Q-ToF-MS. Additionally, various spectrophotometric assays (TAC, FRP, CUPRAC, DPPH⦁) conducted evaluate properties. Phenolic compounds more present in extractable than fraction. Luteolin predominant compound fraction, followed by tricetin derivatives kaempferol. This presents one first reports on quantification aglycone outside Myrtaceae plant family. exhibited different profile, with significantly lower amount phenolics. Kaempferol/derivatives, specific like ferulic 5-carboxyvanillic acids, (epi)catechin 3-O-gallate Regarding phenylamides, demonstrated diverse range these bioactive notable abundance spermine derivatives. In contrast, hydrolysable contained six spermidine derivative. examined also revealed presence seventeen alkaloids, belonging benzylisoquinoline, berberine isoquinoline classes. fatty-acid confirmed prevalence unsaturated acids. Furthermore, both significant activity, showing particularly high activity. Among conducted, CUPRAC assay highlighted exceptional ability PBP’s reduce cupric ions.

Language: Английский

Citations

18

Spermidine activates adipose tissue thermogenesis through autophagy and fibroblast growth factor 21 DOI
Yinhua Ni,

Liujie Zheng,

Liqian Zhang

et al.

The Journal of Nutritional Biochemistry, Journal Year: 2024, Volume and Issue: 125, P. 109569 - 109569

Published: Jan. 5, 2024

Language: Английский

Citations

7