Search Results (1,148)

Oxidative stress is a major contributor to skin aging and related disorders. This study comparatively evaluated the bioefficacy of Schinus terebinthifolius Raddi leaf extracts prepared using three extraction techniques: conventional extraction (CE), accelerated solvent extraction (ASE), and pulsed electric field (PEF) extraction, with 50% (v/v) ethanol and water as green solvents. Among all tested conditions, the CE-derived extract (C-4), obtained with 50% (v/v) ethanol for 120 min, exhibited the highest extraction yield (29.7%). It also showed the highest total phenolic (668.56 ± 11.52 mg gallic acid equivalent (GAE)/g dry material (DM)) and flavonoid content (2629.92 ± 112.61 mg quercetin equivalent (QE)/100 g DM), and potent antioxidant activity against 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical (12,645.50 ± 60.31 µmol Trolox equivalent (TE)/g DM) and oxygen radical absorbance capacity assay (ORAC: 7180.27 ± 101.79 µM TE/100 g DM). Liquid Chromatography coupled with Mass Spectrometry (LC-MS) analysis revealed a diverse phytochemical profile rich in polyphenols, including gallic acid, p-coumaric acid, rutin, rosmarinic acid, caffeic acid, and epicatechin. Cellular assays in hydrogen peroxide (H₂O₂)-induced HaCaT keratinocytes demonstrated that C-4 extract significantly enhanced cell viability and upregulated endogenous antioxidant genes (superoxide dismutase (SOD1), catalase (CAT), glutathione peroxidase (GPX)), with effects comparable to established antioxidants such as epigallocatechin gallate (EGCG) and ascorbic acid. These findings highlight the influence of extraction parameters on phytochemical yield and biological activity, supporting the potential application of CE-derived S. terebinthifolius extracts as effective, sustainable ingredients for cosmeceutical formulations targeting oxidative stress-mediated skin aging. Full article

Hamamelis virginiana (witch hazel) is traditionally used in dermatology for its antibacterial and anti-inflammatory effects. However, the number of studies on its chemical composition and potentials in skin protection remains limited. This study aimed to investigate the qualitative and quantitative composition of polyphenolic compounds in the leaves and bark of the plant, as well as to explore their antioxidant, anti-inflammatory, and extracellular matrix (ECM)-protective activities in skin-relevant cell models. Human dermal fibroblasts and keratinocytes were exposed to oxidative and inflammatory stimuli and pretreated with leaf and bark extracts. ROS levels, antioxidant enzyme activity (SOD, GPx, CAT), pro-inflammatory cytokines (IL-6, IL-1β, TNF-α), and inhibition of collagenase, hyaluronidase, and elastase were assessed. Both extracts strongly reduced ROS levels, enhanced SOD activity, and significantly decreased pro-inflammatory cytokines. Bark extract also exhibited potent inhibitory activity against collagenase and elastase. UPLC-DAD-MS analysis revealed that both plant parts contained high levels of tannins; however, the leaf extract showed a more diverse composition, including more complex tannin forms and a significant amount of flavonoids from the quercetin and kaempferol class. In conclusion, H. virginiana leaf and bark extracts demonstrate multifunctional antioxidant and anti-inflammatory properties, supporting their potential use in cosmeceuticals and dermatological formulations targeting skin aging and inflammation. Full article

Marine macroalgae, classified into three major groups, brown (Phaeophyceae), red (Rhodophyta), and green (Chlorophyta), represent a source of structurally diverse compounds relevant for topical applications. This narrative review of the peer-reviewed literature and regulatory databases targets macroalgae-derived active ingredients in cosmetic formulations and in wound-healing applications. It outlines major compound classes (polyphenols, sulfated polysaccharides, carotenoids, fatty acids, and peptides), along with their documented biological effects on skin (antioxidant, anti-inflammatory, moisturizing, photoprotective, and anti-aging activity) and regulatory/safety aspects with formulation strategies. This review also addresses the variability in compound concentrations resulting from species, environmental conditions, and seasonal factors, which impacts reproducibility and standardization. Common extraction techniques like solvent extraction, ultrasound-assisted extraction, supercritical fluid extraction, and enzyme-assisted methods are described in relation to compound class and yield. Analytical methods used for the identification and quantification of these compounds, including HPLC, GC-MS, and FTIR, are then summarized. Additionally, recent in vitro and in vivo studies evaluating the bioactivity and safety of macroalgae-derived ingredients are discussed. This review compiles relevant evidence to inform formulation strategies and ingredient evaluation in the context of marine-based topical products. Full article

Psoriasis is a chronic inflammatory autoimmune skin disease with current treatments often causing significant side effects. This study systematically evaluated the therapeutic potential and mechanisms of polyphenolic compounds in psoriasis treatment. Following PRISMA guidelines, we searched PubMed, Google Scholar, and ScienceDirect databases between January 2008 and September 2023. Studies investigating polyphenolic effects on psoriasis through in vitro, animal, or clinical models were included. Twenty-five studies met inclusion criteria: nine in vitro studies, eleven animal studies, and five clinical trials. Curcumin was most extensively studied, demonstrating 30–60% reductions in inflammatory markers (TNF-alpha, IL-17, IL-22) and significant PASI score improvements. Mechanistic analysis revealed polyphenols primarily target NF-kappaB pathway inhibition and IL-17/Th17 axis suppression, addressing fundamental inflammatory processes in psoriatic pathophysiology. However, limited clinical evidence represents a significant implementation barrier. Polyphenols show potential as adjunctive therapies to conventional topical and systemic treatments. Future research should prioritize large-scale randomized controlled trials with standardized formulations and combination therapy investigations to establish clinical efficacy and overcome bioavailability challenges. Full article

This review aims to provide a comprehensive overview of the botany, phytochemical composition, and dermatological effects of Cydonia oblonga (CO), with a particular focus on its therapeutic mechanisms across various skin conditions. Among the different parts of the plant, the fruit and peel are especially rich in bioactive compounds, primarily polyphenols such as phenolic acids, anthocyanins, and flavonoids, which are known for their potent antioxidant activity. These constituents contribute significantly to the fruit and peel’s health-promoting properties. To date, multiple extracts derived from various CO parts have been studied in both in vitro and in vivo models. Reported dermatological effects include antioxidant, antimicrobial, anti-inflammatory, anti-allergic, UV-protective, moisturizing, and anti-aging effects, as well as beneficial outcomes in conditions such as wound healing, erythema, and hyperpigmentation. As a result, formulations containing CO-derived compounds have been developed for use in both diseased and healthy skin care. However, only a limited number of these effects have been validated in human clinical studies. Given the promising results from preclinical research, future directions should prioritize in vivo investigations in human subjects to determine optimal concentrations and delivery systems for targeting specific skin disorders. Full article

Background/Objectives: Low semen quality and male infertility are critical global health issues. Emerging research highlights that nutritional factors could play a significant role in determining reproductive outcomes. Understanding and optimizing these dietary influences, including the role of polyphenols, is crucial for developing targeted strategies to improve male fertility. We aimed to explore the relationship between the intake of different classes of polyphenols and semen quality indicators in a cohort of healthy young males. Methods: This is a secondary analysis involving 106 male individuals, aged 18–35 years, from the FERTINUTS trial. Dietary intake was assessed using 3-day dietary records, and semen quality parameters were analyzed. Multivariable linear regression analysis was employed to evaluate the associations between dietary polyphenol consumption and semen quality indicators. Results: Our findings revealed both positive and negative associations between polyphenol consumption and sperm morphology parameters. A higher intake of total polyphenols was associated with a lower percentage of abnormalities in sperm heads but a higher rate of abnormalities in the principal piece. Similar results were observed for lignan and flavonoid intake. Additionally, a higher intake of flavonoids was also associated with a greater percentage of normal sperm forms. In contrast, a higher dietary intake of stilbenes was associated with a higher percentage of combined abnormalities. Conclusions: Higher intake of polyphenols, particularly flavonoids and lignans, was associated with improved sperm head morphology but also with increased tail abnormalities, although no associations with motility or vitality were observed. These results suggest that specific polyphenol classes may have both beneficial and adverse effects on sperm structure, warranting consideration of compound type and dosage in dietary recommendations. Further studies are needed to determine whether these morphological changes impact fertilization outcomes and reproductive potential. Full article

Breast cancer remains a formidable global health challenge, with triple-negative breast cancer (TNBC) posing unique clinical complexities. Characterized by its aggressive nature and limited number of specific therapeutic targets, this breast cancer subtype disproportionately affects African American women, highlighting critical disparities in care. The tumor immune microenvironment (TIME) plays a critical role in breast cancer development and response to immunotherapy, and it is essential in fostering an immunosuppressive and pro-inflammatory niche. Inflammation, primarily mediated by the NF-κB signaling pathway and chemokine signaling, particularly involving CCL2, plays a pivotal role in TNBC progression and therapy resistance. This review describes some of the molecular mechanisms of polyphenols, which are naturally occurring compounds abundant in various dietary sources, and their potential use as therapeutic agents in the management of TNBC. Polyphenolic compounds have been described as modulating the TIME through the inhibition of tumor progression, immune evasion, and therapy resistance, due to their diverse bioactivities, including anti-inflammatory, antioxidant, and anticancer properties, making them attractive candidates for combating the aggressiveness of TNBC and addressing treatment disparities. Polyphenols, such as curcumin, gossypol, butein, epigallocatechin gallate, cardamonin, and resveratrol, have demonstrated efficacy in modulating several signaling pathways within the TIME, which are implicated in the progression of TNBC. This review highlights the potential effects of polyphenols on inflammatory cytokine release, programmed cell death ligand 1 (PD-L1) expression, which is associated with immune evasion by the host cell, and various intracellular signaling cascades, demonstrating their potential use in personalized therapeutic interventions for TNBC. This study also describes differential responses of TNBC cell lines to polyphenol treatment, highlighting the importance of considering genetic variability in therapeutic strategies, as well as the importance of the interaction of polyphenols with the gut microbiome, which may establish the bioavailability and effectiveness of these compounds toward therapeutic outcomes. Further preclinical and clinical studies are warranted to fully elucidate the therapeutic potential of polyphenols and translate these findings into clinical practice, thereby improving outcomes for patients with TNBC worldwide. Full article

Cardiovascular disease (CVD) remains the leading cause of global mortality, despite advances in adult-focused prevention and therapy. Mounting evidence supports the Developmental Origins of Health and Disease (DOHaD) paradigm, which identifies early-life exposures as critical determinants of long-term cardiovascular health. Among the key mechanistic pathways, oxidative stress and gut microbiota dysbiosis have emerged as central, interrelated contributors to cardiovascular programming. Prenatal and postnatal insults can induce sustained redox imbalance and disrupt microbial homeostasis. This disruption creates a feed-forward loop that predisposes offspring to CVD later in life. Antioxidants offer a promising reprogramming strategy by targeting both oxidative stress and gut microbiota composition. Preclinical studies demonstrate that maternal antioxidant interventions—such as vitamins, amino acids, melatonin, polyphenols, N-acetylcysteine, and synthetic agents—can restore redox homeostasis, modulate gut microbial communities, and attenuate cardiovascular risk in offspring. This review synthesizes current evidence on how oxidative stress and gut microbiota act together to shape cardiovascular trajectories. It also examines how antioxidant-based therapies may disrupt this pathological axis during critical developmental windows. Although human data remain limited due to ethical and practical constraints, advancing microbiota-targeted antioxidant interventions may offer a transformative approach to prevent CVD at its origins. Full article

Natural bioactive compounds found in Momordica charantia including polysaccharides, saponins, polyphenols, alkaloids, and notably polypeptide-p (often referred to as “plant insulin”)—have shown promising potential in shaping nutritional and therapeutic strategies for managing diabetes, metabolic disorders, and other nutrition-related diseases. Both retrospective and prospective analyses of bitter gourd’s functional properties such as its antioxidant, antitumor, immunomodulatory, and antibacterial effects highlight its innovative use as a food ingredient in developing targeted nutritional therapies. Assessing its applicability in the food industry, particularly through the fortification of products with bitter gourd powders, pulp, juice, or extracts, could enhance consumer acceptance and elevate the perceived quality of nutritionally superior foods. The nutrifunctional attributes revealed by its nutritional profile support the strategic integration of bitter gourd into various food formulations, contributing to a broader and more diverse range of dietary options. This diversification is especially valuable in addressing the dietary monotony often associated with diabetic nutrition plans, which continue to present significant challenges. The foundation laid by this review drawing on both theoretical insights and practical applications serves as a springboard for future research into the fortifying potential of bitter gourd-based preparations. Ultimately, such products may be recommended not only as nutritional supplements but also as part of clinical and hygienic-dietetic practices. Full article

Repeated UV exposure, air pollution, and toxins promote skin oxidative stress. ROS destroy macromolecules, changing cellular mechanisms and signaling cascades. Inflammation and injury to skin cells degrade function and accelerate aging, causing wrinkles, firmness loss, and dermatological disorders. Gymnema inodorum (GI) contains phytochemical antioxidants such polyphenols and triterpenoids that lower ROS and strengthen skin. GI extracts (GIEs) have never been examined for their effects on dermal skin fibroblasts’ oxidative stress and intracellular cytoprotective mechanisms. In this study, GIEs were prepared as a water extract (GIE0) and ethanol extracts with concentrations ranging from 20% to 95% v/v (GIE20, GIE40, GIE60, GIE80, and GIE95). These extracts were assessed for phytochemical content, antioxidant capacity, and free radical scavenging efficacy. The results were compared to a commercially available native Gymnema extract (NGE) obtained from Gymnema sylvestre. During principal component analysis (PCA), the most effective extracts were identified and subsequently evaluated for their ability to mitigate oxidative stress in fibroblasts. Cytoprotective effects of GIE and NGE against H₂O₂-induced human dermal fibroblast injury were investigated by cell viability, intracellular ROS production, and signaling pathways. GIE0, GIE80, GIE95, and NGE were the best antioxidants. By preserving ROS balance and redox homeostasis, GIE and NGE reduce fibroblast inflammation and oxidative stress-induced damage. Decreased ROS levels reduce MAPK/AP-1/NF-κB and PI3K/AKT/NF-κB signaling pathways, diminishing inflammatory cytokines. In conclusion, GIE and NGE have antioxidant and anti-inflammatory capabilities that can reduce H₂O₂-induced fibroblast oxidative stress and damage, thereby preventing skin aging and targeting cancer-associated fibroblasts. Full article

Zearalenone (ZEA) is a widely distributed estrogenic mycotoxin that can disrupt intestinal barrier integrity by inducing ferroptosis, thereby posing serious risks to animal health. Curcumin (CUR), as a natural polyphenolic compound with multi-target regulatory properties, has attracted increasing attention for its antioxidative and cytoprotective effects; however, its role in ZEA-induced ferroptosis remains poorly understood. In this study, the protective effects of curcumin (CUR) were evaluated in IPEC-J2 cells by co-treating the cells with zearalenone (ZEA) at its LC₅₀ (75.23 μM) and curcumin (5 or 15 μM) for 24 h. CCK-8 assays showed that CUR significantly (p < 0.05) and highly significantly (p < 0.01) improved cell viability in the 5 μM and 15 μM groups, respectively, compared with ZEA alone. CUR co-treatment significantly (p < 0.01) restored glutathione (GSH) levels, and markedly (p < 0.01) reduced Fe²⁺ accumulation, reactive oxygen species (ROS) production, malondialdehyde (MDA) content, and lipid peroxidation (LPO). Transmission electron microscopy revealed pronounced mitochondrial cristae loss and membrane collapse in ZEA-treated cells, which were visibly alleviated by CUR. At the molecular level, ZEA downregulated GPX4 and SLC7A11 and upregulated ACSL4, FTH1, and p53 (all p < 0.01), whereas these changes were significantly reversed (p < 0.05 or p < 0.01) by CUR. In conclusion, CUR exerts cytoprotective effects against ZEA-induced ferroptosis, likely via modulation of the p53/SLC7A11/GPX4 signaling pathway. Full article

Orphan nuclear receptor 4A1 (NR4A1) is a member of the NR4A subfamily that was initially discovered as an intermediate early gene expressed in response to stressors, including inflammatory agents. This review addresses the hypothesis that NR4A1 is a key nutrient sensor that contributes to the anti-aging and health-protective effects of receptor ligands, dietary phenolics, and other diet-derived compounds. There is evidence in animal models including humans that NR4A1 serves as an important gene that decreases the rate of aging and its associated diseases. For example, in humans and mice, NR4A1 expression decreases with age and loss of NR4A1 enhances disease susceptibility, and survival curves show that NR4A1-deficient mice live 4 months less than wild-type animals. An extensive comparison of inflammatory diseases, immune dysfunction, and fibrosis in multiple tissues shows that in NR4A1^−/− mice and rats these diseases and injuries are enhanced compared to wild-type NR4A1^−/− animals. There is evidence showing that structurally diverse NR4A1 ligands reverse the induced adverse effects in NR4A1 wild-type mice. This raises an important question regarding the mechanisms of NR4A1-dependent inhibition of the aging process and the potential for this receptor as a nutrient sensor. It has been well established that polyphenolics, including flavonoids, resveratrol, and other compounds in the diet, are health-protective and decrease the aging process. Recent studies show that resveratrol and flavonoids such as quercetin and kaempferol bind NR4A1 and exhibit protective NR4A1-dependent inhibition of endometriosis and cancer. These limited studies support a role for NR4A1 as a potential dietary sensor of nutrients that are known to be health-protective and a potential nutrient target for improving health. Full article

Bacterial diseases are a major constraint to aquaculture productivity, driving extensive antibiotic use and raising concerns over antimicrobial resistance, environmental contamination, and food safety. Curcumin, a polyphenolic compound from Curcuma longa, exhibits broad-spectrum antimicrobial and immunomodulatory activities but is limited by poor water solubility, instability, and low bioavailability. This review was conducted through a literature search of Scopus, PubMed, Web of Science, and Google Scholar using targeted keywords, including curcumin nanoparticles, antibacterial, aquatic pathogens, nanotechnology, synthesis, and disease control. Titles and abstracts were screened for relevance, followed by full-text evaluation of selected studies. Key findings were critically analyzed and incorporated into the review. Findings from the literature indicate that curcumin nanoparticles, synthesized via milling, anti-solvent precipitation, ionic gelation, emulsification, spray drying, and metal/polymer nanocomposite formation, exhibit enhanced antibacterial activity against aquatic pathogens, including Aeromonas hydrophila, Vibrio parahaemolyticus, Escherichia coli, and Staphylococcus aureus. Optimally engineered curcumin nanoparticles (<100 nm, being mostly spherical, highly negatively charged) can penetrate bacterial membranes, disrupt biofilms, lower minimum inhibitory concentrations, and improve in vivo fish survival. Practical applications include dietary supplementation to boost fish immunity and growth, water disinfection to reduce pathogen loads, immersion therapy for external infections, and antimicrobial coatings for aquaculture equipment and surfaces, resulting in reduced infections and outbreaks, reduced mortality, improved water quality, and decreased antibiotic dependence. In conclusion, curcumin nanoparticles and curcumin-based nanocomposites present a versatile, eco-friendly approach to sustainable aquaculture disease management. However, further field-scale validation, safety assessment, and cost-effective production methods are necessary to enable commercial adoption. Full article

Every year, a substantial amount of food is discarded globally. A significant portion of this waste is composed of fruit by-products or fruits that do not meet consumer standards. Apples rank as the third most extensively produced fruit crop globally, generating substantial waste. This study examined apples that did not meet food industry standards and were destined for disposal. The objective was to recover bioactive compounds from their juice using Cloud Point Extraction (CPE). Like other extraction methods, CPE isolates target compounds from the sample, enhancing recovery yield. A primary advantage of CPE is that it operates without requiring specialized equipment or hazardous reagents. Additional benefits include efficacy, simplicity, safety, and speed. Furthermore, a food-grade surfactant, lecithin, was used to encapsulate bioactive compounds, ensuring non-toxicity for both humans and the environment. After three CPE steps, we recovered 95.95% of the total polyphenols from second-grade apple juice (initial TPC: 540.36 mg GAE/L). The findings highlight CPE’s effectiveness for polyphenol extraction and for producing antioxidant-rich extracts. These extracts may be utilized as nutritional supplements, feed additives, and for nutraceutical or medicinal applications. Full article

Porphyromonas gingivalis is a key periodontal pathogen whose cysteine proteases, gingipains (Rgp and KGP), are essential for nutrient acquisition and virulence. Targeting gingipains may attenuate bacterial pathogenicity and prevent related systemic diseases. This paper aimed to review advances in food-derived natural products that inhibit P. gingivalis or gingipains, with emphasis on mechanisms, potency, and translational potential. A literature search of several databases identified 64 studies on food-derived compounds demonstrating in vitro, in vivo, or clinical effects against P. gingivalis or gingipains. The results showed that tea polyphenols and dihydrochalcones (e.g., phloretin and phlorizin) inhibited gingipain activity, and a variety of food-derived natural products (especially polyphenols and polysaccharides) suppressed the growth, survival, biofilm formation, and virulence of P. gingivalis. Structure–activity relationships suggest galloyl moieties and dihydrochalcone scaffolds enhance gingipain inhibition. Polysaccharides and alkaloids exhibited anti-adhesion or protease inhibition, though with limited potency data. In summary, food-derived natural products represent promising gingipain inhibitors. These inhibitors have potential structure–activity relationships, indicating that food-derived natural products have considerable research prospects. Future research should prioritize structure-based discovery and structure optimization to realize their therapeutic potential. Full article