Search Results (3,083)

Vascular endothelial injury is a key pathological characteristic of multiple diseases, such as atherosclerosis, stroke, and mastitis. Aspirin eugenol ester (AEE) has been confirmed to exert a significant protective effect on vascular endothelial injury. However, the universal action patterns and underlying mechanisms of AEE across different pathological scenarios have not been systematically elucidated. This study aimed to investigate the effect and mechanism of AEE in alleviating multiple vascular endothelial injury models. Nine vascular endothelial injury models were established by treating bovine aortic endothelial cells (BAECs), mouse aortic endothelial cells (MAECs), and human umbilical vein endothelial cells (Huvecs) with ethanol (EtOH), hydrogen peroxide (H₂O₂), and copper sulfate (CuSO₄), respectively. The protective effects of AEE were systematically evaluated via morphological observation, detection of inflammatory responses, and oxidative stress markers. Furthermore, metabolomics was employed to identify and analyze differentially expressed metabolites between the nine model groups and AEE groups. AEE exerted protective effects on all nine vascular endothelial injury models, inhibiting inflammation and oxidative stress induced by all inducers. Metabolomic analysis revealed that the differentially expressed metabolites modulated by AEE in most models were primarily enriched in lipid metabolism, amino acid metabolism, coenzyme biosynthesis, and other related pathways. AEE could improve vascular endothelial injury by upregulating antioxidant substance which included eicosapentaenoic acid (EPA), choline, coenzyme A (CoA), glutathione (GSH), catalase (CAT) and superoxide dismutase (SOD), as well as downregulating substances that cause endothelial oxidative damage, including phytosphingosine (PS), palmitic acid (PA), and arachidonic acid (AA). Full article

Oxidative stress and inflammation are key drivers in the pathogenesis of various chronic diseases, including cardiovascular disease, neurodegenerative disorders, chronic kidney disease, and diabetes. This study evaluated the antioxidant and anti-inflammatory activities of SHE, CME, and FCME, all cultivated in northern Thailand. Human embryonic kidney cells (HEK293) were exposed to FeSO₄ to induce oxidative stress and to LPS to stimulate inflammation. Cell viability was assessed using the MTT assay, while intracellular ROS production was measured using the DCFH-DA. Lipid peroxidation was quantified using the thiobarbituric acid reactive substances assay, and the interleukin-6 (IL-6) release was determined by ELISAs. All extracts demonstrated low cytotoxicity; however, cell death increased at 48 h compared to 24 h. At 200 µg/mL, SHE, CME, and FCME significantly reduced the H₂O₂-induced ROS generation, with the combined treatment of SHE and FCME producing a more pronounced reduction than the individual treatments. Furthermore, the combination of SHE and FCME markedly decreased malondialdehyde (MDA) and IL-6 levels compared with other groups. These findings suggest that shallot and cha-miang extracts, particularly in combination, exhibit promising antioxidant and anti-inflammatory properties in kidney cell models. This combination could therefore be explored as a nutraceutical strategy for the prevention and management of chronic kidney disease, in which oxidative stress and inflammation play pivotal roles. Overall, our finding highlight the potential of the combined use of SHE and FCME as a functional ingredients in the food and pharmaceutical industries. Full article

This study explores the biopreservative and antioxidant potential of lactic acid bacteria (LAB) isolated from low-sodium vegetable fermentations. Five vegetables, green pepper, tomato, eggplant, carrot, and cabbage, were fermented with varying NaCl concentrations (0–3%) for 45 days. Fifty-six presumptive LAB were isolated, and eight LAB strains exhibiting strong antimicrobial activity against Listeria monocytogenes and Staphylococcus aureus were selected for further analysis. The isolates showed significant tolerance to salinity (6.5–18% NaCl), alkaline pH (9.6), and heat stress (45 °C and 60 °C for 30 min). Antimicrobial assays against eight indicator pathogens confirmed a broad inhibition spectrum attributed to bacteriocin-like substances, while antioxidant assays indicated significant antioxidant activity (27–65%), with strain L10 showing the highest radical scavenging potential (p < 0.05). API 20 STREP profiling revealed three dominant taxa: Leuconostoc, Lactococcus lactis, and Enterococcus faecium. These findings highlight LAB as stress-tolerant, multifunctional strains with promising applications as natural biopreservatives and probiotic candidates for developing functional, low-sodium fermented foods. Full article

Fibrous polycaprolactone-based composite materials with the addition of hardystonite (1, 3, and 5 wt.%) were developed using the electrospinning method. The obtained PCL and PCL-HT nonwovens were evaluated in terms of their physiochemical properties (SEM, EDS, BET, and zeta potential). Furthermore, the antioxidant potential [measured by thiobarbituric acid reactive substance (TBARS) levels], blood plasma coagulation parameters, and cyto- and genotoxicity towards PBM and Hs68 cells were assessed to determine the biochemical activity of the composites. The conducted experiments confirmed that hardystonite was successfully incorporated into the PCL matrix. No substantial changes in the fibres’ surface morphology and the structure of the composites were observed. Similarly, the specific surface area, total pore volume, and average pore size did not change significantly. The addition of hardystonite to the polymer solution resulted in a shift in zeta potential toward less negative values. With regard to plasma coagulation parameters, no significant changes were observed in the aPTT, PT, or TT, likely due to the counterbalancing effect of Zn²⁺ and Ca²⁺ ions. Furthermore, the PCL-HT composites exhibited a lowered TBARS level, suggesting antioxidant properties, which could be attributed to the presence of zinc in hardystonite. The PCL and PCL-HT composites demonstrated no cytotoxic or genotoxic effects on the tested blood or skin cell types, suggesting their safety. Full article

Osteoarthritis (OA) is a leading cause of chronic pain worldwide. This is driven by progressive cartilage degradation, inflammation, oxidative stress, and metabolic dysfunction. Current pharmacologic interventions mostly lead to symptomatic relief without actually affecting disease progression. Thus, there is a growing interest in the development of new interventional methods. Our review seeks to synthesize preclinical, translational, and clinical evidence on the impact nutritional methods have on OA management. Whole-diet approaches, such as Mediterranean and plant-based, have been linked to reduced pain, increased physical function, and positive biomarker changes. Bioactive compounds, including curcumin, polyphenols, omega-3 fatty acids, and select herbal extracts, have shown anti-inflammatory, antioxidant, and chondroprotective effects via NF-κB, Nrf2, AMPK, and SIRT1 pathways. This review particularly focuses on plant-derived substances. Emerging nanoparticle technology with regard to advanced delivery systems shows initial promise in nutraceutical pharmacokinetics and tissue targeting. Overall, nutritional interventions are adjunct interventions to OA management. Although these are not full treatment replacements, dietary modifications and targeted nutraceutical strategies with improved delivery systems may lead to more preventive, personalized, and holistic OA management and care. Full article

Amaryllidaceae alkaloids are of notable pharmacological relevance. For instance, galanthamine is used in the treatment of Alzheimer’s disease, while other alkaloids (lycorine, crinine, etc.) derived from Amaryllidaceae plants are also of great interest because they exhibit antitumour, antiviral, antibacterial, antifungal, antimalarial, analgesic and cytotoxic properties. Phenolic acids comprise a group of natural bioactive substances that have commercial value in the cosmetic, food and medicinal industries due to their antioxidant, anticancer, anti-inflammatory and cardioprotective potential. In the present study, the effect of temperature (15, 20, 25 and 30 °C) on Amaryllidaceae alkaloid and phenolic acid biosynthesis in Leucojum aestivum in vitro plant cultures was investigated. The highest diversity of alkaloids (i.e., galanthamine, crinan-3-ol, demethylmaritidine, crinine, 11-hydroxyvitattine, lycorine, epiisohaemanthamine, chlidanthine) was noted in plants cultured at 30 °C. By contrast, ismine and tazettine were only present in plants cultured at 15 °C. Temperatures of 20 °C and 30 °C were found to stimulate galanthamine accumulation. The highest lycorine content was noted in plants grown at temperatures of 15 and 30 °C, and it was negatively correlated with the expression of the gene that encodes the cytochrome P450 96T (CYP96T) enzyme which catalyses a key step in the biosynthesis of different types of Amaryllidaceae alkaloids. This observation may reflect temperature-induced shifts in metabolic flux among different branches of Amaryllidaceae alkaloid biosynthesis. The observed stimulating effect of a 15 °C temperature on the chlorogenic, caffeic, p-coumaric, sinapic, ferulic and isoferulic acid content was in line with the highest expression of a gene that encodes the tyrosine decarboxylase (TYDC) enzyme, which is involved in plant stress response mechanisms. At 30 °C, however, the highest content of the caffeic, vanillic, p-coumaric and isoferulic acids was noted. Full article

In African countries and many developing countries, communal farmers rely on livestock such as cattle, goats, and sheep to support food security, income, and agricultural activities. Fertility in these animals is often limited by poor semen quality, which reduces sperm concentration, total motility, and morphology. Assisted reproductive biotechnologies, including semen cryopreservation and artificial insemination, are increasingly essential to enhance reproductive efficiency and productivity. Although cryopreservation preserves valuable genetic material, it can damage sperm cells, making high-quality extenders critical for protection. Common extenders, such as Tris-egg yolk glucose, citrate-sugar-based, and skimmed milk solutions, supply nutrients and protect sperm membranes. To further minimize oxidative stress, antioxidants are incorporated, with growing interest in plant-derived compounds. Many plants contain bioactive substances, including antioxidants and phytomelatonin, which can enhance sperm quality safely and effectively. This review examines the use of plant-based antioxidants during semen cryopreservation and highlights their potential to improve fertility in mammalian livestock. Full article

Melanin produced in melanocytes contributes to photoprotection, oxidative stress reduction, immune regulation, and epidermal homeostasis, while its dysregulation underlies diverse pigmentary disorders. Natural products modulate melanogenesis by regulating tyrosinase activity, intracellular signaling pathways such as extracellular signal-regulated kinase/mitogen-activated protein kinase (ERK/MAPK) and cyclicAMP/protein kinase A/cAMP response element-binding protein (cAMP/PKA/CREB), and cellular redox balance. Anti-melanogenic effects have been reported for various fruit-derived phytochemicals, ginseng-based metabolites, and plant polyphenols, which act through direct enzymatic inhibition, suppression of melanoenic signaling, modulation of melanosome dynamics, and antioxidant or anti-inflammatory activities. Advances in delivery systems, including nano- and microencapsulation platforms, further enhance the stability and topical bioavailability of these compounds. In contrast, certain methoxylated flavonoids and phenolic constituents can stimulate pigmentation by sustaining melanogenic signaling and promoting microphthalmia-associated transcription factor (MITF)-driven transcription, emphasizing the context-dependent and bidirectional influence of natural substances on pigmentation outcomes. Collectively, these findings highlight the therapeutic potential of natural product-based modulators of melanogenesis while underscoring the need for mechanistic clarification, safety evaluation, and translational studies to ensure effective and controlled pigmentation management. This review summarizes the biological functions of melanin and examines natural strategies for regulating pigmentation. Full article

The intestinal barrier is essential for gastrointestinal and systemic homeostasis by enabling nutrient absorption while limiting the translocation of pathogens and toxins. When barrier function is impaired, bacterial components such as lipopolysaccharides (LPSs) may cross the epithelium and promote inflammatory signaling. In dogs, chronic inflammatory enteropathies are frequent disorders associated with barrier dysfunction, dysbiosis, and immune dysregulation, and may progress to protein-losing enteropathy or systemic inflammation. Humic substances, particularly humic acid (HA), are natural organic compounds with reported antioxidative, immunomodulatory, and barrier-supporting effects; however, the cellular mechanisms underlying these effects in intestinal and immune models remain insufficiently characterized. This study evaluated the effects of a commercially available HA-based supplement on epithelial barrier integrity and inflammatory responses using an in vitro system combining IPEC-J2 intestinal epithelial cells and primary canine peripheral blood mononuclear cells (PBMCs). Epithelial barrier integrity (FD4 paracellular flux), reactive oxygen species, and cytokine production (TNF-α, IL-6) were assessed under basal and LPS-stimulated conditions. HA treatment preserved epithelial barrier function and reduced LPS-induced pro-inflammatory cytokine production, supporting further investigation of HA as a nutraceutical adjunct for gut health support in dogs with chronic enteropathies. Full article

Fruit peels, a primary fruit processing by-product, are rich in biodegradable polymers (e.g., dietary fibers and proteins) and bioactive substances (e.g., polyphenols, essential oils, and pigments) that are suitable for producing active and intelligent packaging films. In recent years, there is a new trend to utilize fruit peels in the form of powders for film production, which aligns with circular economy principles. In general, fruit peel powders (FPPs) can function as rigid fillers and the polymer matrix in packaging films, forming FPP-filled and FPP-based films, respectively. These two film types exhibit distinct characteristics: FPP-filled films typically have a compact structure with strong molecular interactions, leading to superior mechanical and barrier properties. Conversely, FPP-based films often display a cracked structure with weaker molecular interactions, resulting in inferior mechanical and barrier properties. Despite these differences, both film types demonstrate excellent antioxidant and antimicrobial activities, pH sensitivity, and biodegradability, as well as considerable promise for active and intelligent packaging. This review comprehensively summarizes the preparation methods, structural characteristics, physical and functional properties, and active and intelligent packaging potential of both film types. It also features a multi-dimensional comparison of FPP-filled and FPP-based films’ performance and a discussion of their current challenges and future directions. Full article

This study aimed to examine the impact of using sunflower seed meal (SM) on the nutritional, phytochemical, rheological, physicochemical, and sensory qualities of wheat bread. Four bread types were formulated with 0, 10, 20, and 30% SM (CB, SMWB1, SMWB2, and SMWB3, respectively). Both the composite flours and the resulting breads were evaluated to assess the impact of increasing SM levels. The results revealed that SM was richer than wheat flour in minerals, protein, lipids, total polyphenols, and antioxidants activity. The gradual incorporation of SM into WF improved the composition of these substances in the composite flours and breads obtained. Among all formulations, SMWB1 (10% SM) exhibited the most balanced characteristics, combining nutritional enhancement with satisfactory technological quality. This bread showed a porous crumb structure (62.43% porosity), good elasticity (57.28%), and an acceptable height-to-diameter ratio (0.47). Based on these results, SMWB1 was selected for further technological optimization. The improved formulation (SMWB10) was rich in nutrients and had better physicochemical and organoleptic characteristics and a reduced antinutritional effect of phytic acid, thanks to the fermentation applied during its production. Thus, incorporating 10% sunflower meal into wheat bread improves its nutritional and phytochemical composition, particularly in terms of proteins, minerals, polyphenols, and antioxidants. Full article

Resveratrone is a novel compound that was inadvertently discovered by photo-conversion of natural compound resveratrol. Although resveratrol, a representative antioxidant and anti-aging compound, is widely used to promote human health, the benefits of resveratrone have been little studied and remain largely unknown. Since resveratrone has a completely different molecular structure from resveratrol, it has a high possibility of possessing different effects to resveratrol. In this study, the various effects of resveratrone on skin health were revealed, including outstanding antioxidants, whitening, anti-wrinkle, skin regeneration, anti-acne, and so on. Moreover, resveratrone has been confirmed to be an excellent ingredient for skin health because it shows higher performance than resveratrol in most areas. Full article

This comprehensive review presents the results of an in-depth analytical literature search on the biological activity of humic substances and their possible pharmacological mechanisms of action. The unique chemical structure of humic substances has determined their widespread use in many economic sectors, including medicine. Thanks to modern advances in pharmaceuticals, pharmacology, and toxicology, it has been possible to demonstrate the multifaceted biological activity of humic substances and, consequently, the possibility of using them to treat and prevent many infectious and non-infectious pathologies, including diseases considered incurable. The article presents data on their immunotropic, antibacterial, antiviral (including HIV), antitumor, antioxidant and antiradical, cardiotropic, hepatoprotective, regenerative, detoxifying, and adaptogenic effects; their influence on the intestinal microbiome; studies of the toxic properties of humic substances and the safety of their use in medicine; and the current trend of using humic substances as unique matrices for creating next-generation bionanomaterials. An analysis of data on the intracellular mechanisms that play a key role in the implementation of the effects of humic substances is conducted. Thus, the natural genesis of humic substances, their multifaceted biological activity, and the absence of toxic and allergenic properties explain the growing interest of scientists from all over the world in their study. Full article

Glycyrrhiza glabra L. is an economically significant plant that naturally grows in arid regions and is widely used in the cosmetics, food, and pharmaceutical industries. Its roots are the economically important part. However, it has weak drought tolerance during the seedling stage, and water scarcity has become a major limiting factor for improving the yield and quality of cultivated licorice. Therefore, this study conducted a pot experiment in which melatonin was applied via root irrigation to examine its effects on alleviating drought stress in G. glabra seedlings and on enhancing the yield and quality of its valuable parts. The results showed that under drought conditions, applying 100 μM melatonin yielded the most significant improvements in both yield and quality. Specifically, melatonin treatment increased root biomass by 138.10% and significantly boosted the levels of key bioactive compounds, including glycyrrhizic acid, liquiritin, glabridin, liquiritigenin, and isoliquiritigenin by 60.51%, 72.08%, 182.03%, 83.86%,and 30.68%, respectively. This study uniquely combined the Mantel test and random forest modeling for a comprehensive analysis of the experimental data. The analysis indicated that these effects were attributable to exogenous melatonin, which markedly enhanced antioxidant enzyme activities in G. glabra seedlings and reduced membrane lipid peroxidation products, thereby strengthening their antioxidant defense capabilities. Additionally, melatonin promoted the accumulation of osmotic adjustment substances and effectively improved photosynthetic performance. Our research provides a scientific basis for increasing both the quality and yield of G. glabra under drought conditions. Full article

Flavonoids are a class of natural plant compounds that are categorised within the polyphenolic group. It is widely acknowledged that their structural diversity results in a wide distribution within food sources, thus leading to a concomitant wide spectrum of biological activity. This review provides an updated overview of the main flavonoid subclasses, including flavonols, flavones, flavanones, flavanols, anthocyanins, and isoflavones, and includes an examination of their chemical properties and biosynthetic pathways. The present study will discuss the influence of biotic and abiotic factors on flavonoid function in plants, including their role in ultraviolet protection, stress tolerance, and defence signalling. The regular consumption of foods rich in flavonoids has been demonstrated to be associated with a reduced risk of chronic diseases, including cardiovascular, metabolic diseases, neurodegenerative and neurodevelopmental disorders. This observation underscores the significance of flavonoids in a balanced diet. Medicinal plants play an important role in this task. The mechanisms of action of this substance include antioxidant and anti-inflammatory effects, modulation of signalling pathways, and neuroprotective functions. The present findings underscore the significance of flavonoids as multifunctional bioactive molecules, which hold considerable potential for preventive and therapeutic applications. However, further well-designed human studies are necessary to determine effective dosage, long-term safety, and clinical relevance. Full article