Cirsii Herba glycoprotein promotes macrophage M1 polarization through MAPK and NF-κB signaling pathways via interaction with TLR4

The present study aimed to extract and purify the glycoprotein from Cirsii Herba (CHPs), and investigate its immunomodulatory activity and molecular mechanism in RAW264.7 macrophages. The results showed that CHPs contained 14.8% carbohydrates and 80.4% proteins. CHPs were identified as glycoprotein around 70 kDa and contained 17 different amino acids, in which the Glu and Asp were predominant. The carbohydrate chain in CHPs was composed of mannose, rhamnose, glucuronic acid, galacturonic acid, glucose, galactose, xylose and arabinose with the molecular ratio of 6.387: 24.358: 5.766: 8.877: 12.098: 20.427: 7.090: 14.997. CHPs significantly boosted pinocytic and phagocytic activities, increased the secretions of inflammatory factors (NO, TNF-α and IL-6) and chemokines (CXCL2 and CXCL10), and promoted the expressions of accessory and costimulatory molecules (CD40, CD80, CD86, MHC I and MHC II). RNA-seq analysis identified 721 DEGs, 1575 GO terms and 69 KEGG pathways. The pathway inhibition assay presented that MAPK and NF-κB pathways were essential to macrophage activation by CHPs. TLR4 was revealed as a functional receptor and involved in the early recognition of CHPs. These results indicated that CHPs as a glycoprotein promoted macrophage polarization to M1 phenotype mainly via TLR4-dependent MAPK and NF-κB pathways.

Upcycling commercial nut byproducts for food, nutraceutical, and pharmaceutical applications: A comprehensive review

This article presents a comprehensive overview of upcycling commercial nut byproducts (such as Brazil nut, cashew, hazelnut, macadamia, peanut (also known as a legume), pecan, pine nut, pistachio, and walnut) for food, nutraceutical, and pharmaceutical applications. Upcycling nut byproducts, namely husk/hull, hard shell, brown skin, defatted flour/meal/cake, pine cone, cashew nut shell liquid, cashew apple, walnut septum, and dreg/okara, has great potential, not only to reduce/minimise waste, but also to fit within the circular economy concept. Each byproduct has its own unique functional properties, which can bring significant value. These byproducts can be used as value-added ingredients to promote better health and well-being, due to their rich sources of diverse bioactive components/phytochemicals, polysaccharides, fibre, lignin, prebiotics, oils, proteins, bioactive peptides, minerals, and vitamins, among other components. This comprehensive review provides a basis for future research and development of product applications for nut byproducts. More studies are needed on novel product development to valorise nut byproducts.

Bridging gap in the treatment of Alzheimer's disease via postbiotics: Current practices and future prospects

Aging is an extremely significant risk associated with neurodegeneration. The most prevalent neurodegenerative disorders (NDs), such as Alzheimer's disease (AD) are distinguished by the prevalence of proteinopathy, aberrant glial cell activation, oxidative stress, neuroinflammation, defective autophagy, cellular senescence, mitochondrial dysfunction, epigenetic changes, neurogenesis suppression, increased blood-brain barrier permeability, and intestinal dysbiosis that is excessive for the patient's age. Substantial body studies have documented a close relationship between gut microbiota and AD, and restoring a healthy gut microbiota may reduce or even ameliorate AD symptoms and progression. Thus, control of the microbiota in the gut has become an innovative model for clinical management of AD, and rising emphasis is focused on finding new techniques for preventing and/or managing the disease. The etiopathogenesis of gut microbiota in driving AD progression and supplementing postbiotics as a preventive and therapeutic treatment for AD is discussed. The review additionally discusses the use of postbiotics in AD prophylaxis and therapy, portraying them as substances that address senescence-triggered dysfunctions and are worthy of translating from bench to biopharmaceutical market in response to "silver consumers" needs. The current review examines and evaluates the impact of postbiotics as whole and specific metabolites, such as short-chain fatty acids (SCFAs), lactate, polyamines, polyphenols, tryptophan metabolites, exopolysaccharides, and bacterial extracellular vesicles, on the aging-associated processes that reinforce AD. Moreover, it provides an overview of the most recent data from both clinical and preclinical research involving the use of postbiotics in AD.

Self-assembling of coiled-coil peptides into virus-like particles: Basic principles, properties, design, and applications with special focus on vaccine design and delivery

Self-assembling peptide nanoparticles (SAPN) based delivery systems, including virus-like particles (VLP), have shown great potential for becoming prominent in next-generation vaccine and drug development. The VLP can mimic properties of natural viral capsid in terms of size (20-200 nm), geometry (i.e., icosahedral structures), and the ability to generate a robust immune response (with multivalent epitopes) through activation of innate and/or adaptive immune signals. In this regard, coiled-coil (CC) domains are suitable building blocks for designing VLP because of their programmable interaction specificity, affinity, and well-established sequence-to-structure relationships. Generally, two CC domains with different oligomeric states (trimer and pentamer) are fused to form a monomeric protein through a short, flexible spacer sequence. By using combinations of symmetry axes (2-, 3- and 5- folds) that are unique to the geometry of the desired protein cage, it is possible, in principle, to assemble well-defined protein cages like VLP. In this review, we have discussed the crystallographic rules and the basic principles involved in the design of CC-based VLP. It also explored the functions of numerous noncovalent interactions in generating stable VLP structures, which play a crucial role in improving the properties of vaccine immunogenicity, drug delivery, and 3D cell culturing.

Preparation, characterization and in vitro antioxidant activities of a homogeneous polysaccharide from Prunella vulgaris

Prunella vulgaris is a medicinal and edible homologous plant, commonly used as a folk medicine to treat diseases. The Prunella vulgaris polysaccharides (PVPs) are reported with the antioxidant activity. This work was designed to isolate, characterize, and test the antioxidant activity of purified PVPs from P. vulgaris. A new homogeneous polysaccharide (PVP-1) was prepared by the DEAE column from PVPs, and diverse chromatography/spectroscopy and chemical methods were simultaneously employed to characterize the fine structure of PVP-1. The results showed PVP-1 had a triple helix structure, and the repeating structural unit of PVP-1 was composed of →6)-β-D-Galp-(1→6)-β-D-Galp-(3,1→6)-β-D-Galp-(1→6)-β-D-Galp-(1→ as the main chain, together with →6)-β-D-Galp-(1,3→1)-α-D-Araf-(5→1)-β-D-Galp-(4→1)-α-D-Galp-(2→ and →6)-β-D-Galp-(1,3→1)-α-D-GlcAp-(4→1)-α-D-Glcp-(4→1)-α-D-Galp as the branch chains. The main monosaccharides of PVP-1 were galactose (Gal, 41.25 %), galactose-OMe (Gal-OMe, 27.73 %), arabinose (Ara, 10.63 %), mannose (Man, 9.86 %), glucose (Glc, 3.88 %), glucuronic acid (GlcA, 2.86 %), ribose (Rib, 1.79 %), and xylose (Xyl, 1.76 %). In addition, the scanning electron microscopy (SEM) displayed that the surface of PVP-1 was rough and porous. PVP-1 gave the scavenging rates of the DPPH, ABTS, and hydroxyl radical lower than vitamin C at the same concentration, with the highest scavenging rate of DPPH radical at 82.71 % ± 4.19 % (5 mg/mL).

Preparation, characterization, and stability of selenium nanoparticles decorated with Mori Fructus polysaccharide and its protective effects in bisphenol A-induced Sertoli cells

Bisphenol A (BPA) is an endocrine disruptor universally present in food packaging, which may cause oxidative stress and reproductive toxicity through migration to food and ingestion then. Both Mori Fructus and selenium have excellent antioxidant ability and good therapeutic effects on reproductive improvement. Hence, in this work, Mori Fructus polysaccharide (MFP) was selected as a stabilizer to synthesize MFP‑selenium nanoparticles (MFP-SeNPs) by chemical reduction method. The structural properties, stability and antioxidant activity of MFP-SeNPs were subsequently characterized and studied. The results suggested that spherical MFP-SeNPs (average size 80.73 nm, zeta potential -31.8 mV) with zero-valent and well dispersion was successfully synthesized with 1 mg/mL MFP as a stabilizer, which could be stabilized at 4 °C for 35 d. Compared with MFP and SeNPs, MFP-SeNPs had stronger radical scavenging ability, it could also decrease the levels of MDA and ROS and enhance the GSH-px and SOD activity through PI3K/Akt pathways in BPA-induced TM4 cells. Taken together, MFP-SeNPs could become a potential antioxidant to improve male reproductive functions in the future food field.

Exploring miRNA therapies and gut microbiome-enhanced CAR-T cells: advancing frontiers in glioblastoma stem cell targeting

Glioblastoma multiforme (GBM) presents a formidable challenge in oncology due to its aggressive nature and resistance to conventional treatments. Recent advancements propose a novel therapeutic strategy combining microRNA-based therapies, chimeric antigen receptor-T (CAR-T) cells, and gut microbiome modulation to target GBM stem cells and transform cancer treatment. MicroRNA therapies show promise in regulating key signalling pathways implicated in GBM progression, offering the potential to disrupt GBM stem cell renewal. CAR-T cell therapy, initially successful in blood cancers, is being adapted to target GBM by genetically engineering T cells to recognise and eliminate GBM stem cell-specific antigens. Despite early successes, challenges like the immunosuppressive tumour microenvironment persist. Additionally, recent research has uncovered a link between the gut microbiome and GBM, suggesting that gut dysbiosis can influence systemic inflammation and immune responses. Novel strategies to modulate the gut microbiome are emerging, enhancing the efficacy of microRNA therapies and CAR-T cell treatments. This combined approach highlights the synergistic potential of these innovative therapies in GBM treatment, aiming to eradicate primary tumours and prevent recurrence, thereby improving patient prognosis and quality of life. Ongoing research and clinical trials are crucial to fully exploit this promising frontier in GBM therapy, offering hope to patients grappling with this devastating disease.

Single amino acid substitution analogs of marine antioxidant peptides with membrane permeability exert a marked protective effect against ultraviolet-B induced damage

Ultraviolet-B (UVB) causes oxidative stress, which is implicated in skin damage and photoaging. Antioxidant peptides exhibit protective effects against UVB-induced oxidative stress and are thus regarded as potential competitors compared to synthetic antioxidants for cosmetics. In the present study, we provided a discovery pipeline for screening and modifying marine-derived antioxidant peptides, and successfully identified and characterized three novel modified peptides (WP5, LW5 and YY6) with strong antioxidant abilities. Their scavenging activities on 2,2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate) radical (ABTS·) and hydroxyl radical (·OH) were higher than those of glutathione (GSH) (ABTS·: 71.12 ± 3.58 %, 67.63 ± 1.65 % and 68.51 ± 0.54 % by WP5, LW5 and YY6, respectively, vs 61.51 ± 1.02 % by GSH; ·OH: 52.15 ± 1.99 %, 51.25 ± 1.29 % and 53.06 ± 2.23 % by WP5, LW5 and YY6, respectively, vs 42.69 ± 1.18 % by GSH). The modified peptides can effectively penetrate cell membrane and significantly enhance cell viability against UVB-induced oxidative stress in human keratinocyte (HaCaT) cells by reducing the levels of reactive oxygen species and malondialdehyde and increasing the activity of intracellular antioxidant enzymes, including superoxide dismutase and glutathione peroxidase. Additionally, the modified peptides decreased the expression of tumor necrosis factor-α, interleukin-6 and interleukin-1β in UVB-induced cell inflammatory response, exhibiting a potent anti-inflammatory activity. Further investigation into the molecular mechanism revealed that the modified peptides not only decreased cell apoptosis by down-regulating the apoptosis factors Bax/Bcl-2 and c-PARP, but also increased the antioxidant capacity of HaCaT cells by interrupting the interaction between Kelch-like ECH associated protein 1 (Keap1) and nuclear factor erythroid 2-related factor 2 (Nrf2), and ultimately promoting Nrf2 activation. The findings suggest a promising strategy for accelerating the discovery of antioxidant peptides and cell-penetrating peptides, providing valuable insights for pharmaceutical and cosmetic industries.

Enhanced prediction of total purine content in hyperspectral images of diverse livestock meat samples using optimization algorithm

This research looks at rapid detection and algorithm optimization of total purine in livestock meat with the goal of supporting the creation of low-purine diets. First, the prediction models for total purine content of single species were constructed based on chemical and hyperspectral data. Next, the correlation of spectral curves between different species by Hausdorff distance and Pearson correlation coefficient were analyzed to explore differential purine variation in mixed livestock meat. Finally, the optimal prediction models of total purines in mixed livestock meat were obtained, which were the interval-variable-iterative-spatial-contraction-method-sparrow-search-algorithm-bidirectional-long-short-term-memory-mmulti-head-attention (SSA-Bi-LSTM-MHA) in visible near-infrared hyperspectral imaging technology (Vis-NIR HSI) and iteratively-retain-informative-variables-SSA-Bi-LSTM-MHA in NIR-HSI, respectively, with Rp2 of 0.7820 and 0.7766. Totally, the conclusion that model performance of mixed samples due to increased computational complexity was lower than the ideal model of single samples was obtained and validated. This study demonstrated the potential of HSI for rapid detection of purine content, which further promoted the industrialization of online monitoring of livestock meat quality.

Effect of dynamic high pressure microfluidization on pasting, gelling and rheological properties of starch composite with β-glucan both from highland barley

The objective of this study was to investigate the effect of β-glucan on the pasting, gelling, rheological properties, and multi-level structures of the highland barley (HB) starch after dynamic high pressure microfluidization (DHPM) treatment, exploring the inhibition mechanisms of starch retrogradation by endogenous β-glucan after DHPM. DHPM treatment led to a decrease in the viscosity (K values from 161.1 to 54.4) of HB starch-β-glucan composite as the pressure increased from 0 to 120 MPa, while an increase in the viscosity was induced by DHPM treatment cycles from 1 to 3 at 120 MPa. Similar changes were also found in the relative crystallinity (RC) and degree of retrogradation (DR). The RC values decreased from 44.66 % to 25.53 %, and the DR values decreased from 53.4 % to 24.6 % as the DHPM pressure increased from 0 MPa to 120 MPa (p < 0.05). However, when number of DHPM cycles increased from 1 to 3 under 120 MPa, the RC value and DR value increased to 35.99 % and 31.9 %, respectively. Scanning electron microscopy images demonstrated that β-glucan formed a protective layer around HB starch granules after DHPM treatment at 120 MPa for one pass. Fourier transform infrared spectra and X-ray diffraction results indicated the intra- and intermolecular hydrogen bonds between HB starch and β-glucan were strengthened by DHPM. Endogenous β-glucan emerged as a strong candidate for inhibition of HB starch retrogradation. This study highlights an innovative and promising strategy for improving the properties of HB starch and facilitating its utilization.

Unveiling the Role of Protein Posttranslational Modifications in Glioma Prognosis

BACKGROUND

Gliomas represent the most aggressive malignancies of the central nervous system, with posttranslational modifications (PTMs) emerging as critical regulators of oncogenic processes through dynamic protein functional modulation. Despite their established role in tumor biology, the systematic characterization of PTM-mediated molecular mechanisms driving glioma progression remains unexplored. This study aims to uncover the molecular mechanisms of glioma, with a focus on the role of PTMs.

METHODS

We analyzed the PTM pathway to classify glioma patients into distinct clusters. Comprehensive analyses compared intercluster differences in clinical outcomes, mutational landscapes, and immune microenvironment profiles. Differentially expressed genes (DEGs) were identified to construct a robust prognostic prediction model with machine learning approaches. Among the genes included in the model, TOM1L1 (Target of Myb1 Like 1 Membrane Trafficking Protein) was selected for in vitro experimental validation to assess its role in glioma progression.

RESULTS

PTMs were found to influence glioma prognosis significantly. Dysregulation in specific pathways, such as glutathionylation and citrullination, was correlated with more aggressive clinical features. The prognostic model, comprising DEGs such as TOM1L1, demonstrated high predictive accuracy (c-index = 0.867)-the scores derived from the model strongly correlated with glioma progression indicators. In vitro experiments revealed that TOM1L1 facilitates malignant progression by modulating PTM pathways, confirming its functional role in glioma.

CONCLUSION

Our study establishes the first comprehensive PTM atlas in gliomas, revealing subtype-specific modification patterns with clinical and therapeutic implications. TOM1L1 emerges as a promising prognostic biomarker and a potential therapeutic intervention target. Targeting PTM pathways may offer novel strategies for glioma treatment, enhancing patient outcomes.

Development and characterization of gelatin peptides and peptide‑calcium chelates from tuna processing by-products of skins and bones

This study used hydrothermal extraction to obtain gelatin from tuna processing by-products. After treatment, the yield (w/w dry weight) of gelatin from skins and bones were 70.22 ± 2.07 % and 28 ± 3.03 %, respectively. Enzymatic hydrolysis using alkaline protease and pancreatin converted the gelatins into peptides, with the content of oligopeptide up to 87.67 ± 1.44 %. The tuna bone gelatin peptides exhibiting higher scavenging abilities against hydroxyl radicals (·OH-), 1,1-diphenyl-2-picryl-hydrazyl radical (DPPH·), and hydrogen peroxide (H2O2) compared to tuna skin gelatin peptides. Gelatin peptides were chelated with CaCl2 at 50 °C for 60 min, pH 8.0, and a 1:2 peptide-to‑calcium ratio, achieving a maximum calcium binding capacity of 56.70 ± 1.67 %. Fourier-transform infrared spectroscopy indicated the participation of amino and carboxyl groups in the reaction. These findings provide technical and theoretical support for the development of calcium-chelated gelatin peptides.

Unveiling techniques and exploring the potential of Myconutraceticals: Analyzing current applications and future prospects

The escalating demand for natural, nutritionally rich food products underscores the significance of exploring the fungal kingdom, comprising yeast, lichens, molds, and mushrooms, as an abundant reservoir of nutritionalcompounds, secondary metabolites and bioactive components. This paper delves into the nutritional profiles of lichen, yeast, and mushrooms, emphasizing their role as prominent sources of myco-nutraceuticals and functional foods. The growing popularity of eco-friendly extraction techniques for mycochemicals is noted, alongside the exploration of established methods for qualitative and quantitative mycochemical analysis. Notably, studies have affirmed that the incorporation of mushroom and yeast extracts, and their derived compounds, enhances the nutritional profile of meals without compromising desirable dietary attributes. The biological health-promoting properties inherent in extracts and chemicals are also discussed. Anticipated trends the incorporation of myconutrients into functional foods and dietary supplements are highlighted. Finally, challenges hindering the optimal utilization of myconutraceuticals are scrutinized.

Enhancing Physicochemical and Piezoelectric Properties of Eggshell Membrane Proteins by Ultrasonic-Assisted Enzymes for Food and Sensor Applications

This research sought to explore the impact of ultrasonic pretreatment on the physicochemical characteristics of proteins derived from eggshell membranes through enzymatic extraction. Response surface methodology (RSM) and Box-Behnken design were employed to identify the ideal conditions for the extraction process. The optimal parameters determined were enzyme usage at 4.2%, pH level at 2.4, a solid-to-solvent ratio of 1:20 g/mL, and an extraction time of 21.5 h. The eggshell membrane was pretreated by ultrasound before pepsin hydrolysis under optimized conditions. The findings indicated that the hydrolyzed products subjected to ultrasonic pretreatment exhibited enhanced solubility, surface hydrophobicity, water and oil retention, foaming characteristics, and emulsifying ability compared to the untreated hydrolyzed products. Furthermore, the piezoelectric properties of the protein with ultrasonic pretreatment were also significantly improved. Additionally, the protein-based piezoelectric device displayed excellent sensing performance and was successfully applied for human motion detection and precise identification of different pressure positions. These findings indicate that ultrasound has great potential to improve the physicochemical quality of eggshell membrane proteins, providing a theoretical basis and research approach for food protein modification and the preparation of green electronic devices.

Rhynchophylline alleviates cognitive deficits in multiple transgenic mouse models of Alzheimer's disease via modulating neuropathology and gut microbiota

Amyloid-beta (Aβ) aggregation, phosphorylated tau accumulation and neuroinflammation are considered as three hallmarks of Alzheimer's disease (AD). Rhynchophylline (RN), the major alkaloid of a Chinese medicinal plant Uncaria rhynchophylla, has been shown to possess potent anti-AD effects. This study explored the effects of RN on Aβ pathology, tauopathy, and neuroinflammation using three AD mouse models, including TgCRND8, 3×Tg-AD, and 5×FAD, with RN treatment lasting for 4, 6, and 6 months, respectively, followed by behavioral tests and biological assays. In addition, BV2 cells were employed to further evaluate the biological effects of RN. RN treatment improved cognitive functions by reducing anxiety-like behaviors, enhancing recognition ability, and ameliorating learning impairments. It modulated Aβ processing through reducing the Aβ-producing enzyme activities and enhancing degradation enzyme activities, thereby diminishing Aβ accumulation. RN also decreased hyperphosphorylated tau proteins at Thr181, Thr205, Ser396, and Ser404 sites. Moreover, RN diminished neuroinflammation by reducing microglia and astrocyte activation and lowering the release of inflammatory cytokines. Furthermore, RN treatment could restore gut microbiota dysbiosis in 5×FAD mice. In BV2 cells, knockdown of p53, HDAC2, and Galectin-3 markedly enhanced the anti-inflammatory effects of RN. Overall, the anti-AD properties of RN were attributed to its regulation of multiple biological pathways, including regulation of the p53/PINK1 signaling pathway, inhibition of the HDAC2/AMPK signaling pathway, suppression of the Galectin-3/C/EBPβ/AEP signaling pathway, and modulation of gut microflora dysbiosis. This pioneering study unambiguously revealed the effects of RN on cognitive impairments, APP processing, tauopathy, and neuroinflammation in different transgenic mouse models with differing AD burdens, highlighting its potential as an anti-AD therapeutic agent and enhancing the scientific basis for its clinical use in treating AD.

Dietary Oligosaccharides Isolated from Coix Seed Mitigate Hyperuricemia through Modulation of Lipid Metabolites and Intestinal Homeostasis

Hyperuricemia (HUA) is a prevalent metabolic disorder associated with chronic disease, posing significant global health challenges. Coix seed, a traditional cereal, has shown therapeutic potential against HUA, with oligosaccharides serving as its primary active components. However, the mechanisms of Coix seed oligosaccharides in HUA management remain underexplored. In this study, a novel oligosaccharide was isolated from Coix seed (CSO) through enzymatic hydrolysis and column chromatography. Structural analysis revealed that the CSO is primarily composed of glucose, with a backbone of →4)-β-Glcp-(1→ linkages. CSO exhibited significant hypouricemic effects in both adenosine-induced HK-2 cells and HUA mice by inhibiting XOD activity and regulating urate transporter expression. Furthermore, CSO restored lipid imbalances, particularly in PS and PC, and modulated gut microbiota by increasing Ruminococcus, Akkermansia, and Lachnospiraceae abundance to alleviate HUA-related systemic disturbances. Importantly, CSO alleviated HUA-induced renal injury by downregulating the IL-6/JAK2/STAT3 signaling pathway. This study provided meaningful evidence supporting the effect of CSO on HUA and offered new directions for natural oligosaccharide interventions in metabolic health.

Gelation improvement of low-salt Chinese shrimp (Fenneropenaeus chinensis) surimi gel by L-arginine

In this study, the effect of L-arginine (L-Arg) on the gel properties of low-salt (NaCl, 0.5 % w/w) Chinese shrimp surimi gel (SSG) was investigated and the mechanism was explored. As the L-Arg concentration was raised from 0 to 0.75 %, the gel strength and hardness of SSG reached the maximum values and remained stable, increasing by 7.63 % and 82.5 %, respectively, and these results were better than those of high-salt (2 % NaCl) control group. Moreover, L-Arg enhanced the apparent viscosity of minced shrimp, decreased the G' of minced shrimp but increased the G' of SSG. With the addition of L-Arg, the protein solubility was significantly elevated to 74.89 %. The binding of L-Arg to Chinese shrimp myosin was mainly dependent on hydrogen bonds. In summary, 0.75 % L-Arg increased protein solubility, hydrogen bonds and disulfide bonds, forming a denser gel network structure for low-salt SSG, thus improving gel properties.

Innovative strategies for valorization of byproducts from soybean industry: A review on status, challenges, and sustainable approaches towards zero-waste processing systems

The agro-food supply chain generates significant quantities of waste and byproducts globally, influenced by regional socioeconomic conditions, policy frameworks, and environmental concerns. The soybean industry generates various byproducts during the production processes of oil, soy milk, tofu, soy yogurt, edamame, miso, tempeh, natto, and soy sauce, presenting both challenges and opportunities for sustainable valorization. The review aims to outline the composition, status, and potential applications of key byproducts within the soybean industry including soy okara, soy whey, soy hull, soy meal, and lecithin, elucidating innovative strategies for their comprehensive valorization. The goal is to establish a sustainable zero-waste processing system by effectively utilizing these byproducts. This review explores emerging biotechnological advancements and eco-friendly processes aimed at maximizing resource recovery through the valorization of these soy byproducts. Various commercially viable products derived from repurposing the carbohydrate and protein fractions of diverse soy byproducts are highlighted. Additionally, a cutting-edge framework is proposed, advocating for the establishment of a zero-waste system within the soybean processing sector, emphasizing integrated biorefinery technologies, circular economy strategies, and sustainability principles. The framework proposed encompasses maximizing okara utilization, extracting value-added products, and implementing a closed-loop byproduct management approach within collaborative supply chains. Despite promising prospects, challenges such as anti-nutrients, viscosity and solubility of soy powder, and environmental impact must be addressed. This study could inspire further research into innovative technologies for the comprehensive and integrated valorization of soy byproducts, aiming to mitigate food waste and enhance the sustainability of the soybean industry.

A dual absorption pathway of novel oyster-derived peptide-zinc complex enhances zinc bioavailability and restores mitochondrial function

Zinc deficiency is a global health issue that impairs immune function, growth, and energy metabolism. Although conventional zinc supplements have been developed, their effectiveness is limited by poor bioavailability and susceptibility to dietary inhibitors. In this study, a peptide-zinc complex (IE-Zn) derived from oysters was developed to enhance zinc uptake and address metabolic disruptions caused by deficiency. It was determined that Zn2+ binds with high affinity to the IE peptide, promoting structural flexibility that facilitates zinc transport through both zinc ion transporters and oligopeptide transporters. In Caco-2 and IEC-6 cell models, IE-Zn was shown to significantly improve zinc absorption and retention compared to ZnSO4, driven by the upregulation of ZIP4 and PEPT1 transporters. In vivo studies in a zinc-deficient mouse model confirmed enhanced zinc absorption and distribution across serum, intestine, and liver. Moreover, IE-Zn restored energy homeostasis by activating the AMPK/PGC1-α/NRF-1/TFAM signaling pathway, promoting mitochondrial biogenesis and reducing oxidative stress. These findings suggest that IE-Zn is a superior zinc supplement with higher bioavailability and serves as a potent regulator of cellular energy metabolism, offering therapeutic potential for managing conditions related to zinc deficiency and mitochondrial dysfunction. This study lays the foundation for further exploration of peptide-mineral complexes as advanced nutritional supplements with broad applications. Subsequent studies will further investigate the absorption pathway and targeting of peptide-zinc complex. The hope is to provide potential preventive applications for people in need, including zinc deficiency and a range of diseases caused by zinc deficiency.

Exploring the microbiota-gut-brain axis: impact on brain structure and function

The microbiota-gut-brain axis (MGBA) plays a significant role in the maintenance of brain structure and function. The MGBA serves as a conduit between the CNS and the ENS, facilitating communication between the emotional and cognitive centers of the brain via diverse pathways. In the initial stages of this review, we will examine the way how MGBA affects neurogenesis, neuronal dendritic morphology, axonal myelination, microglia structure, brain blood barrier (BBB) structure and permeability, and synaptic structure. Furthermore, we will review the potential mechanistic pathways of neuroplasticity through MGBA influence. The short-chain fatty acids (SCFAs) play a pivotal role in the MGBA, where they can modify the BBB. We will therefore discuss how SCFAs can influence microglia, neuronal, and astrocyte function, as well as their role in brain disorders such as Alzheimer's disease (AD), and Parkinson's disease (PD). Subsequently, we will examine the technical strategies employed to study MGBA interactions, including using germ-free (GF) animals, probiotics, fecal microbiota transplantation (FMT), and antibiotics-induced dysbiosis. Finally, we will examine how particular bacterial strains can affect brain structure and function. By gaining a deeper understanding of the MGBA, it may be possible to facilitate research into microbial-based pharmacological interventions and therapeutic strategies for neurological diseases.

The role of the sucrose synthase gene in promoting thorn occurrence and vegetative growth in Lycium ruthenicum

Lycium ruthenicum is a highly valued ecological and economic shrub, but its abundant thorns disrupt production processes. Previous studies suggested that the sucrose synthase gene (LrSUS) in L. ruthenicum may influence thorn occurrence, presenting potential for breeding thornless varieties suited for cultivation. To explore this, the full-length CDS of LrSUS was cloned, and a novel stable genetic transformation system mediated by Agrobacterium tumefaciens was developed. Through this system, both LrSUS overexpression and suppression lines were generated. While suppression lines exhibited slow growth and failed to survive post-transplant, overexpression lines demonstrated accelerated growth, with significant increases in adventitious root number and length. Upon transplanting, the overexpression lines also showed enhanced thorn occurrence, alongside notable increases in thorn length, leaf size, stem diameter, photosynthetic rate, and sugar content. Subcellular localization analysis using a transient expression method based on the injection of L. ruthenicum indicated that the LrSUS gene product is localized in the chloroplasts. Key genes involved in LrSUS/ sucrose affecting thorn occurrence event were identified through high throughput transcriptome analysis and a hypothetical mechanistic model was established. This study provides valuable insights into the function of LrSUS and establishes a foundation for manipulating thorn phenotypes in L. ruthenicum and related species.

In Slico Screening and In Vitro Identification of Hyperuricemia-Inhibiting Peptides from Trachurus japonicus

Hyperuricemia arises from imbalanced uric acid metabolism, contributing to gout and related chronic diseases. When traditional drugs are used to treat hyperuricemia, side effects are inevitable, which promotes the exploration of new bioactive compounds. Protein hydrolysates and peptides are gradually showing potential in the treatment of hyperuricemia. This study investigated the uric acid inhibitory activity of peptides extracted from Trachurus japonicus using in silico and in vitro methods. We employed in silico virtual enzymolysis and experimental validation to identify bioactive peptides from Trachurus japonicus proteins. Four peptides (DF, AGF, QPSF, and AGDDAPR) were comprehensively screened by molecular docking and database analysis. After solid-phase synthesis, the inhibitory effects of these peptides on hyperuricemia were further verified in vitro and at the cellular level. The results showed that all four peptides have good hyperuricemia-inhibiting activities. Molecular docking and molecular dynamics revealed that peptides DF and AGDDAPR affect the production of uric acid by binding to the active sites of urate transporter 1 (URAT1), glucose transporter 9 (GLUT9), and xanthine oxidase (XOD), while peptides QPSF and AGF mainly influence the XOD active site, confirming that it is feasible to rapidly screen hyperuricemia-inhibiting peptides by molecular docking.

Synthesis and Bioactivity of Selenium Nanoparticles From Tussilago farfara L. Polysaccharides: Antioxidant Properties and MCF-7 Cell Inhibition

The present study reports the synthesis of selenium nanocomplexes (Se-TFPs) using purified polysaccharides from Tussilago farfara L. (coltsfoot). It evaluates its structural characteristics, physicochemical properties, and inhibitory effects of Michigan Cancer Foundation-7 (MCF-7) breast cancer cells. The influence of processing conditions on nanoparticle size and stability at 25°C was assessed using particle size and zeta potential measurements. The Se-TFPs were synthesized by optimizing the processing conditions via response surface methodology, yielding nanoparticles with a selenium (Se)-to-polysaccharide mass ratio of 1:13.5, a Se-to-ascorbic acid molar ratio of 1:4.5, a selenite concentration of 10.7 mM, and a reaction time of 4.4 h. The resulting Se-TFPs had an average particle size of 107.2 nm and a zeta potential of -35.1 mV. Structural and physicochemical analyses confirmed successful nanoparticle formation. Compared to TFPs, Se-TFPs exhibited significantly enhanced scavenging activity against 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), hydroxyl radicals, and superoxide anion radicals. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays, flow cytometry, and cell cycle apoptosis analysis revealed that Se-TFPs effectively inhibited MCF-7 cell proliferation at the S phase, with an IC50 value of 119.62 µg/mL.

Correlation analysis of the impact of Clonorchis sinensis juvenile on gut microbiota and transcriptome in mice

Clonorchiasis remains a non-negligible global zoonosis, imposing serious socio-economic burdens in endemic regions. The interplay between gut microbiota and the host transcriptome is crucial for maintaining health; however, the impact of Clonorchiasis sinensis juvenile infection on these factors is still poorly understood. This study aimed to investigate their relationship and potential pathogenic mechanisms. The BALB/c mouse model of early infection with C. sinensis juvenile was constructed. Pathological analyses revealed that C. sinensis juvenile triggered liver inflammation, promoted intestinal villi growth, and augmented goblet cell numbers in the ileum. Additionally, the infection altered the diversity and structure of gut microbiota, particularly affecting beneficial bacteria that produce short-chain fatty acids, such as Lactobacillus and Muribaculaceae, and disrupted the Firmicutes/Bacteroidetes ratio. Gut transcriptome analysis demonstrated an increase in the number of differentially expressed genes (DEGs) as infection progressed. Enriched Gene Ontology items highlighted immune and detoxification-related processes, including immunoglobulin production and xenobiotic metabolic processes. Kyoto Encyclopedia of Genes and Genomes pathway analysis further indicated involvement in circadian rhythm, as well as various detoxification and metabolic-related pathways (e.g., glutathione metabolism and glycolysis/gluconeogenesis). Prominent DEGs associated with these pathways included Igkv12-41, Mcpt2, Arntl, Npas2, Cry1, and Gsta1. Correlation analysis additionally identified Bacteroides_sartorii as a potential key regulator in the interaction between gut microbiota and transcriptome. This study sheds light on the alterations in gut microbiota and transcriptome in mice following C. sinensis juvenile infection, as well as their correlation, laying a foundation for a better understanding of their interaction during infection.

IMPORTANCE

This study highlighted the impact of C. sinensis juvenile infection on the gut microbiota and transcriptome of BALB/c mice. It induced liver inflammation, promoted intestinal villi growth, and altered goblet cell numbers. The infection also disrupted the diversity and structure of gut microbiota, particularly affecting beneficial bacteria. Transcriptome analysis revealed increased expression of genes related to immune response and detoxification processes. Important pathways affected included circadian rhythm, glutathione metabolism, and glycolysis/gluconeogenesis. Notable genes implicated included Igkv12-41, Mcpt2, Arntl, Npas2, Cry1, and Gsta1. Bacteroides_sartorii emerged as a potential key regulator in this interaction.

Does Transglutaminase Crosslinking Reduce the Antibody Recognition Capacity of β-Lactoglobulin: An Analysis from Conformational Perspective

Food allergies are a global concern, with β-lactoglobulin (β-LG) in bovine milk being a major allergenic protein. This study investigated the effects of transglutaminase (TGase)-mediated crosslinking on the antibody recognition capacity (ARC) and structural properties of β-LG, with the aim of developing hypoallergenic dairy products. β-LG solutions were treated with TGase at varying concentrations (0, 5, 10, 15, and 20 U/g) and durations (0, 6, 18, 24, and 42 h), followed by analysis using electrophoresis, enzyme-linked immunosorbent assay (ELISA), and spectroscopy. The results demonstrated that treatment with TGase at 20 U/g significantly reduced the ARC and immunoglobulin E (IgE) binding capacity of β-LG to 90.0 ± 0.4% and 58.4 ± 1.0%, respectively, with the optimal ARC reduction observed after 6 h of treatment (86.7 ± 1.2%, p < 0.05). Although electrophoresis did not reveal significant crosslinking of β-LG, ultraviolet absorption, fluorescence intensity, and hydrophobicity all increased with prolonged crosslinking time, while sulfhydryl content fluctuated irregularly. These findings suggest that β-LG underwent varying degrees of structural modification, which led to the masking of antigenic epitopes during the early stages (0-24 h), followed by their re-exposure at the later stage (42 h). Overall, these results highlight the potential of TGase to reduce β-LG potential allergenicity, presenting a promising strategy for the development of hypoallergenic dairy products.

Photobiomodulation of gut microbiota with low-level laser therapy: a light for treating neuroinflammation

The gut microbiota is known to interact with various organs in the body, including the central nervous system, through the gut-brain axis. Intestinal dysbiosis can lead to increased peripheral inflammation and, consequently, affect the brain, resulting in neuroinflammation. Photobiomodulation (PBM) has demonstrated positive regulatory effects on the imbalance of certain body functions, including pain, inflammation, immunity, wound healing, and gut microbiota dysbiosis. Therefore, PBM at the intestinal level could help improve intestinal dysbiosis and reestablish cerebral homeostasis. In this context, this study aimed to conduct a narrative review of the literature on the effects of PBM at the intestinal level on intestinal dysbiosis and neuroinflammation. Overall, the findings highlight that PBM modulates the gut microbiota, suggesting it could serve as a therapy for neurological conditions affecting the gut-brain axis. Future research should focus on further elucidating the molecular mechanisms underlying this therapy.

Developing clinical prognostic models to predict graft survival after renal transplantation: comparison of statistical and machine learning models

INTRODUCTION

Renal transplantation is a critical treatment for end-stage renal disease, but graft failure remains a significant concern. Accurate prediction of graft survival is crucial to identify high-risk patients. This study aimed to develop prognostic models for predicting renal graft survival and compare the performance of statistical and machine learning models.

METHODOLOGY

The study utilized data from 278 renal transplant recipients at the Ethiopian National Kidney Transplantation Center between September 2015 and February 2022. To address the class imbalance of the data, SMOTE resampling was applied. Various models were evaluated, including Standard and penalized Cox models, Random Survival Forest, and Stochastic Gradient Boosting. Prognostic predictors were selected based on statistical significance and variable importance.

RESULTS

The median graft survival time was 33 months, and the mean hazard of graft failure was 0.0755. The 3-month, 1-year, and 3-year graft survival rates were found to be 0.979, 0.953, and 0.911, respectively. The Stochastic Gradient Boosting (SGB) model demonstrated the best discrimination and calibration performance, with a C-index of 0.943 and a Brier score of 0.000351. The Ridge-based Cox model closely followed the SGB model's prediction performance with better interpretability. The key prognostic predictors of graft survival included an episode of acute and chronic rejections, post-transplant urological complications, post-transplant nonadherence, blood urea nitrogen level, post-transplant regular exercise, and marital status.

CONCLUSIONS

The Stochastic Gradient Boosting model demonstrated the highest predictive performance, while the Ridge-Cox model offered better interpretability with a comparable performance. Clinicians should consider the trade-off between prediction accuracy and interpretability when selecting a model. Incorporating these findings into the clinical practice can improve risk stratification and personalized management strategies for kidney transplant recipients.

Rice bran peptides target lectin-like oxidized low-density lipoprotein receptor-1 to ameliorate atherosclerosis

Food-derived multifunctional peptides offer numerous health benefits through different biochemical pathways. However, their impact on aging-related atherosclerotic cardiovascular disease (ASCVD), especially atherosclerosis, remains underexplored despite cardiovascular disease (CVD) being the leading cause of death globally. In this study, NHANES data and Mendelian randomization were used to analyze the association between lipid metabolism disorders, systemic immune responses, dietary inflammatory index, and ASCVD. The results showed that they were all positively correlated with ASCVD. A dietary intervention was used to induce a mouse model of atherosclerosis through a high-fat diet (HFD). Our findings demonstrate that rice bran peptide could mitigate the typical pathological features of atherosclerosis. Molecular docking analysis further predicted that lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) is a key target of rice bran peptide. This prediction was validated through a two-cell model of endothelial cells and lox-1-interfered macrophages. Therefore, targeting LOX-1 with rice bran peptide inhibits the excessive uptake of oxidized LDL (ox-LDL) by macrophages, thereby hindering the mass production of foam cells, which is crucial in preventing the early onset of atherosclerosis.

Natural products based on Correa's cascade for the treatment of gastric cancer trilogy: Current status and future perspective

Gastric carcinoma (GC) is a malignancy with multifactorial involvement, multicellular regulation, and multistage evolution. The classic Correa's cascade of intestinal GC specifies a trilogy of malignant transformation of the gastric mucosa, in which normal gastric mucosa gradually progresses from inactive or chronic active gastritis (Phase I) to gastric precancerous lesions (Phase II) and finally to GC (Phase III). Correa's cascade highlights the evolutionary pattern of GC and the importance of early intervention to prevent malignant transformation of the gastric mucosa. Intervening in early gastric mucosal lesions, i.e., Phase I and II, will be the key strategy to prevent and treat GC. Natural products (NPs) have been an important source for drug development due to abundant sources, tremendous safety, and multiple pharmacodynamic mechanisms. This review is the first to investigate and summarize the multi-step effects and regulatory mechanisms of NPs on the Correa's cascade in gastric carcinogenesis. In phase I, NPs modulate Helicobacter pylori urease activity, motility, adhesion, virulence factors, and drug resistance, thereby inhibiting H. pylori-induced gastric mucosal inflammation and oxidative stress, and facilitating ulcer healing. In Phase II, NPs modulate multiple pathways and mediators regulating gastric mucosal cell cycle, apoptosis, autophagy, and angiogenesis to reverse gastric precancerous lesions. In Phase III, NPs suppress cell proliferation, migration, invasion, angiogenesis, and cancer stem cells, induce apoptosis and autophagy, and enhance chemotherapeutic drug sensitivity for the treatment of GC. In contrast to existing work, we hope to uncover NPs with sequential therapeutic effects on multiple phases of GC development, providing new ideas for gastric cancer prevention, treatment, and drug development.

Melanoidins from Shanxi aged vinegar: Characterization and behavior after in vitro simulated digestion and colonic fermentation

This study aims to elucidate the structure, physicochemical properties, and potential behavior of vinegar melanoidins (VM) during digestion and intestinal microbial fermentation in vitro. Our findings revealed that VM mainly consisted of carbohydrates. The particle size (166.46 ± 10.06 nm) of VM was significantly larger than that of model melanoidins (MM, 20.69 ± 0.05 nm). VM exhibited stability in vitro digestion process. However, the carbohydrate contents and Mw were reduced. Total phenol content (TPC), total flavonoid content (TFC), antioxidant capacity and SCFAs were significantly increased after colonic fermentation. TPC and TFC were 79.48 ± 9.52 mg GAE/g DW and 0.422 ± 0.024 mg RE/g DW at 48 h. In addition, VM exhibited intestinal modulatory effects on the microbiota by promoting an increase in beneficial bacteria including Firmicutes and Bifidobacterium. Collectively, these results suggest that VM as a potential prebiotic can be applied in the field of functional food.

Mechanisms Associated With Renal Injury in Hyperuricemia and Strategies for the Development of Natural Active Substances

Hyperuricemia (HUA) is a metabolic condition resulting from an abnormality in the process of purine metabolism. Its occurrence has been on the rise globally. The results of relevant studies show that 5% to 12% of HUA patients will eventually develop gout, and one-third of these patients may involve the kidneys and develop kidney disease. Although the severe renal health hazards associated with excessive uric acid levels are well known, the specific molecular mechanisms remain unknown. Therefore, this paper provides insights into the mechanisms and related chain reactions of HUA leading to renal injury from three perspectives: imbalance of intestinal homeostasis, oxidative stress response, and NLRP3 inflammasome. In addition, standing against the background of the strong side effects and high tolerability disadvantages of commercially available uric acid-lowering drugs such as allopurinol, benzbromarone, and febuxostat, the development of a new active anti-hyperuricemic drug with fewer side effects is justified. This article reviews the progress of research on natural actives (probiotics, dietary polyphenols, peptides) with a high safety profile, multi-targeting, and integrative modulatory effects, in an attempt to provide some ideas for drug developers.

Incorporation of transglutaminase potentially promoted the gelling properties and sensorial attributes of lysine-rich salt-reduced frankfurters

This study was designed to investigate the promotive effect of transglutaminase (TG) on the gelling properties and sensorial attributes of lysine (Lys)-rich salt-reduced frankfurters. The results revealed that the addition of 0.3% TG yielded acceptable cooking loss and emulsion stability in Lys-rich salt-reduced frankfurters, significantly improved their textural parameters, and visibly optimised their microstructure. Moreover, combination treatment with TG and Lys also promoted the gelling properties of the thermally induced gels, conferring greater viscoelasticity and stability. Meanwhile, TG and Lys positively transformed their protein conformations by promoting the generation of isopeptide bonds and enhancing the predominant molecular forces (hydrogen bonds and hydrophobic interactions). Additionally, combination treatment with 0.3% TG and Lys increased the overall sensory score of the salt-reduced frankfurters from 45.4 to 82.6. In summary, the combined application of TG and Lys potentially serves as an efficient salt-replacement strategy in emulsified meat products, providing superior product quality and health benefits.

Gastroprotective effect of fucoidan from Sargassum siliquastrum against ethanol-induced gastric mucosal injury

The ethanol-induced BALB/c mice and human gastric epithelial cell (Ges-1 cell) models were used to investigate the Sargassum siliquastrum fucoidan (SFuc) gastroprotective capability. The injury score and histopathological sections of the stomach were used to evaluate the gastroprotective capability. The western blotting and RT-PCR methods determined the signaling mechanism of mice's gastric injury. SFuc is fucoidan with a molecular weight of 300.7 and 25.1 kDa. The injury score and ulcer index of the SFuc-200 group decreased by 3.85 and 2.06 folds in contrast with the Model group, respectively. The findings indicated that SFuc reduced oxidative stress and inflammatory factor expression in the gastric mucosa by downregulating the levels of associated genes within the TLR-4, MyD88, and MAPK/NF-κB signaling pathways. Meanwhile, the SFuc-200 group promoted the expressions of EGF and PGE 2 by 1.53 and 1.52 folds, respectively. Together with the expression inhibition of p38, ERK, JNK, and NF-κB proteins in gastric tissue to help for differentiation of gastric cells. In addition, SFuc significantly reduced apoptosis occurrence in mice and Ges-1 cells. Our study provides potential mechanism clues of the SFuc's resistance to ethanol-induced gastric mucosal damage, suggesting its potential functional food for gastric protection.

Plant-derived compounds as potential neuroprotective agents in Parkinson's disease

OBJECTIVES

Current Parkinson's disease (PD) medications treat symptoms; none can slow down or arrest the disease progression. Disease-modifying therapies for PD remain an urgent unmet clinical need. This review was designed to summarize recent findings regarding to the efficacy of phytochemicals in the treatment of PD and their underlying mechanisms.

METHODS

A literature search was performed using PubMed databases from inception until January 2024.

RESULTS

We first review the role of oxidative stress in PD and phytochemical-based antioxidant therapy. We then summarize recent work on neuroinflammation in the pathogenesis of PD, as well as preclinical data supporting anti-inflammatory efficacy in treating or preventing the disease. We last evaluate evidence for brain mitochondrial dysfunction in PD, together with the phytochemicals that protect mitochondrial function in preclinical model of PD. Furthermore, we discussed possible reasons for failures of preclinical-to-clinical translation for neuroprotective therapeutics.

CONCLUSIONS

There is now extensive evidence from preclinical studies that neuroprotective phytochemicals as promising candidate drugs for PD are needed to translate from the laboratory to the clinic.

In silico identification and experimental validation of two types of angiotensin-converting enzyme (ACE) and xanthine oxidase (XO) milk inhibitory peptides

Bioactive peptides have received significant attention due to their natural origin, low toxicity, and targeting specificity in the past decade. This study identified highly active ACE/XO inhibitors using molecular simulation and online databases and validated their in vitro antioxidant activity and the mechanisms of molecular interactions. According to computer predictions, Asp-Gly-Gly (DGG) and Asp-Gly-Met (DGGM) were identified as potential hydrolysates of common gastrointestinal peptidases with well water-soluble, non-toxic, and non-allergenic. Fourier transform infrared spectroscopy showed that the two peptides altered the enzyme's secondary structure, decreasing α-helix content by about 13 %, along with increasing β-sheet, randam coli, and β-turns content. Molecular docking and molecular dynamics simulations showed that hydrogen bonding and electrostatic interactions caused DGG and DGGM to form stable and dense complexes with the two enzymes. This study provides a new way for economical and efficient screening of new ACE and XO inhibitory peptides from natural proteins.

Improving solubility of rice protein powder by modifying its physicochemical properties by ultrasound-assisted protein-glutaminase

The effect of ultrasound-assisted protein-glutaminase (PG) deamidation on the physicochemical properties of rice protein (RP) was investigated. After ultrasound pretreatment, the degree of deamidation of RP reached the highest of 60.4 % at deamidating for 16 h. With the deamidating time increasing, the particle size of RP became smaller and the absolute value of ζ-potential gradually increased. For functional properties of RP, ultrasound-assisted PG deamidation improved the foaming capacity, emulsifying capacity and oil-holding capacity of RP. Based on the ameliorative physicochemical properties of RP, the properties of rice protein powder (RPP) were further determined. The solubility of RPP was significantly improved, increased by 102.6 % at 90 °C compared with the non-treated. Meanwhile, the antioxidant activity and flavor of RPP under PG deamidation were remarkably improved. In vitro digestibility of RPP also increased significantly. These results illustrated that PG deamidation could be an efficient method for improving the properties of proteins.

Interaction of soy protein isolate with vitamin B12 during digestion: Focus on the binding mechanism, structure, and functional properties

This study investigated the release mechanism and digestive characteristics of soy protein isolate (SPI)-loaded vitamin B12 during digestion. According to the molecular docking results, vitamin B12 interacted with the SPI through a hydrophobic pocket on the SPI surface. Spectroscopy revealed that the fluorescence intensity of the SPI and complex system increased with the digestion time. The maximum emitted wavelength was red-shifted in gastric digestion and blue-shifted in intestinal digestion. Moreover, volume exclusion chromatography unveiled that high-molecular-weight proteins in the SPI and complex system gradually decomposed with an increase in the digestion time. The molecular weight progressively shifted from 100 kDa (macromolecules) to 30-50 kDa (small molecules). The present study clarified the digestive mechanism of the SPI with vitamin B12 and offered a theoretical basis for applying the SPI-vitamin B12 complex in food systems.

Effects of polysaccharide fractions isolated from the pulp of rose laevigata Michx fruit on the foaming and polarization of RAW264.7 macrophage cells

The foaming and polarization of macrophages are pivotal in the formation and development of atherosclerosis. This study delved into the structure and membrane pattern recognition receptors (PRRs) of the neutral polysaccharide fraction (PPRLMF-1), investigating effects of PPRLMF-1 and acid polysaccharide fraction (PPRLMF-2) on the foaming and polarization of RAW264.7 macrophage cells, and exploring their underlying mechanisms. The results elucidated that PPRLMF-1, devoid of a triple-helix conformation, comprised rhamnose, arabinose, xylose, mannose, glucose and galactose in a molar ratio of 1: 4.04: 1.45: 3.91: 10.24: 5.83. The main PRRs of PPRLMF-1 in macrophages were CD36, CR3, TLR2, and TLR4. Comparing to PPRLMF-1, PPRLMF-2 demonstrated a superior ability to transform M0 and M2 phenotypic cells into M1 phenotype. Importantly, compared to PPRLMF-1, PPRLMF-2 exhibits superior ability in improving lipid accumulation and inflammatory state of foam cells, possibly achieved through inhibiting the intake of oxLDL. Consequently, PPRLMF-1 and PPRLMF-2 emerge as potential functional foods to prevent early atherosclerosis.

Improvement of egg yolk powder properties through ultrasound coupled sodium sulfite pretreatment assisted enzymatic hydrolysis and underlying mechanism

Egg yolk is an excellent protein source for the production of bioactive peptides. However, the recent method need to remove lipid first which involves wastage and pollution of organic reagents. Therefore, the process of directly using oily yolk powder to prepare egg yolk peptides has attracted much attention. This study developed a one-step process to simultaneously extract oil and hydrolyze proteins based on an ultrasound coupled sodium sulfite pretreatment (UCSSP) assisted enzymatic hydrolysis for egg yolk powder. Results showed that UCSSP increased the oil extraction rate from zero to 75 % with 59.35 g/L of soluble protein and 33.99 g/L of peptide. Further analysis of the underlying mechanism demonstrated that ultrasound pre-treatment could change the secondary structure of EYP while sodium sulfite pre-treatment softened the protein and induced more hydrophobic groups exposed, thus inducing more lipoprotein released for hydrolysis. In addition, the proportion of peptides ranging from 180 Da to 3000 Da in the UCSSP group increased from 31.19 % before to 79.74 %, which was 31.27 % and 6.16 % higher than that of UP and SP. Furthermore, the obtained peptides showed obvious activities in uric acid-lowering, anti-obesity and antioxidant with 56.24 % inhibition in XOD activity and close antioxidant activity to vitamin C, implying it a potential health product.

Polysaccharides from sea buckthorn - Ultrasound-assisted enzymatic extraction, purification, structural characterization, and antioxidant activity analysis

This study employed a sophisticated approach consisting of ultrasound-assisted enzyme treatment to extract polysaccharides from sea buckthorn (SBP). The SBP extraction parameters were optimized, the following optimal parameters were identified: solid-liquid ratio of 1:32 g/mL, ultrasound duration of 26 min, ultrasound temperature of 52 °C, and composite enzyme concentration of 6000 U/100 mL, and the maximum extraction yield of SBP was 24.07 ± 0.15 %. The separation and purification of SBP resulted in the isolation of three fractions of polysaccharides (SBPR-1, SBPR-2, SBPR-3). The composition and structural characteristics of the SBPRs were identified. Furthermore, the SBPRs exhibited the characteristic absorption peaks of polysaccharides. Notably, the surface microstructures of the SBPRs showed significant variations. Moreover, all SBPRs demonstrated commendable thermal stability and in vitro antioxidant activity. This study serves as a reference for the development and application of natural antioxidants and provides a theoretical foundation for the environmentally friendly and effective extraction of SBP.

Microenvironment-responsive sodium alginate hydrogel loaded with MnO2 and pachymic acid for the treatment of gastric ulcer

Gastric ulcer (GU), a common digestive system disorder in clinical practice, often arises from excessive alcohol consumption and other factors that irritate the gastric mucosa. Effective treatment of GU remains challenging due to the poor targeting, limited efficacy, and significant side effects associated with current therapeutic approaches. To address these limitations, we developed a microenvironment-responsive hydrogel composed of sodium alginate (SA) and chitosan (CS), incorporating MnO2 nanoparticles and pachymic acid (PA). This hydrogel was designed to evaluate its therapeutic potential for GU treatment in both in vitro and in vivo models. The SA/CS hydrogel system rapidly formed in response to acidic gastric conditions, leveraging the microenvironment to enhance therapeutic efficacy. Encapsulated MnO2 nanoparticles could scavenge reactive oxygen species (ROS), mitigating oxidative stress, while PA further alleviated oxidative damage. In vitro studies demonstrated that this hydrogel system significantly promoted the migration of gastric mucosal epithelial cells (GES-1) and reduced oxidative stress-induced damage under H2O2 stimulation. Furthermore, in vivo evaluations using animal models of ethanol-induced acute GU and acetic acid-induced chronic GU confirmed the hydrogel's pronounced anti-ulcer effects. These results underscore the potential of MnO2-and PA-loaded SA/CS hydrogels as a safe, targeted, and effective therapeutic strategy for ethanol-induced gastric injury. This novel approach offers a promising foundation for the development of future gastric ulcer treatments.

Deep eutectic solvent-assisted starch acetylation within stale bread particles to improve water resistance

Building up from our previous findings on deep eutectic solvents (DES) as reaction promoters for the acetylation of pure wheat starch, the current work explored combinations of reaction time, temperature and acetic anhydride: bread molar ratios to acetylate macromolecules within bread particles relying solely on macromolecule solvation and the slightly basic environment provided by the eutectic mixture. High degree of substitution with acyl groups (DSacyl, 0.73-1.09 as quantified by 1H NMR and confirmed by 13C NMR, and FTIR) was achieved within a short timeframe of 36 min and < 16 acetic anhydride:bread molar ratio. Spectroscopy discarded a major presence of side-reaction products starch carbamates and acetyl urea in reacted samples. Nevertheless, DES acetylation resulted in reacted samples with starch weight average molecular weight (Mw) ranging from 2.62 × 106 to 1.39 × 106 g/mol for the most degraded sample and the partial wash-off of starch and cell wall polysaccharides, which resulted in increased gluten content. Notably, TGA (coupled to real-time FTIR analysis of the evolved gases) suggested a potential enhancement in hydrophobicity and glass transition temperature (Tg) in the reacted samples, with a positive correlation between DSacyl and Tg. These findings emphasize the potential of DES as reaction promoters in complex starchy matrices for esterification reactions.

Sodium alginate-camellia seed cake protein active packaging film cross-linked by electrostatic interactions for fruit preservation

The evolution of production and lifestyle patterns has led to an increasing demand for multifunctional packaging materials that exceed the capabilities of traditional single-function options, thus driving continuous innovation in the field. In this study, a novel approach is presented, where camellia seed cake protein, derived from camellia seed oil production by-products, is incorporated into sodium alginate to create biobased active packaging films. The antioxidant and UV-shielding properties of the sodium alginate-camellia seed cake protein films are enhanced by the incorporation of camellia seed cake protein. A closely intertwined structure is created between sodium alginate and camellia seed cake protein through electrostatic interactions, resulting in effective water vapor barrier capabilities. Furthermore, the active packaging films exhibit antimicrobial activity against E. coli and S. aureus, providing significant advantages for fruit preservation. This research is essential in delaying fruit spoilage, extending shelf life, and providing new insights into the development of biobased multifunctional food packaging materials.

Taste characterization and molecular docking study of novel umami flavor peptides in Yanjin black bone Chicken meat

Five polypeptides with a potential umami taste were isolated and purified from Yanjin black bone chicken. However, the flavor characteristics and umami mechanism have not been clarified. The umami properties of these five peptides were investigated in this work using a range of analytical techniques, computer simulation, and sensory evaluation. HE-10 and TP-7 exhibited the strongest umami flavors. Furthermore, dose-response experiments showed that the umami peptides enhanced umami by generating peptide mineral chelates. Environmental scanning electron microscopy (ESEM) microstructural analyses supported this finding. The molecular docking results indicated that the five polypeptides bind to four critical amino acid residues, namely Glu217, Glu148, Asp216, and His145, of the T1R1/T1R3 receptor. The binding occurred through van der Waals, electrostatic interactions, hydrogen bonding, and hydrophobic interactions. The main surface forces implicated include aromatic interactions, hydrogen bonding, hydrophilicity, and solvent accessibility.

Selenium nanoparticles modified with Ophiocordyceps gracilis polysaccharides: Enhancing stability, bioavailability, and anti-inflammatory efficacy

Here, a high molecular weight polysaccharide preparation from Ophiocordyceps gracilis was utilized as a stabilizer and dispersant to create nanocomposites based on selenium nanoparticles (GSP-1a-SeNPs). The NPs showed the highest stability at a selenium/polysaccharide mass ratio of 1:1, with no significant change after 28 days of storage at 4 °C. The NPs exhibited a symmetrical spheroid structure with an average diameter of 85.4 nm. Next, the anti-inflammatory properties and mechanisms of the GSP-1a-SeNPs were examined in LPS-induced RAW264.7 cells, which efficiently internalized the NPs. In the anti-inflammatory assays, GSP-1a-SeNPs significantly reduced the production of pro-inflammatory cytokines, including TNF-α and IL-6, and lowered ROS levels by activating the Nrf2-Keap1 pathway. This pathway regulates selenoprotein expression, thereby balancing the immune microenvironment of RAW264.7 cells and mitigating inflammation. These results suggest that GSP-1a-SeNPs could serve as potential therapeutic agents or adjuvants for treating LPS-induced inflammation.

Nanomaterials-mediated lysosomal regulation: a robust protein-clearance approach for the treatment of Alzheimer's disease

Alzheimer's disease is a debilitating, progressive neurodegenerative disorder characterized by the progressive accumulation of abnormal proteins, including amyloid plaques and intracellular tau tangles, primarily within the brain. Lysosomes, crucial intracellular organelles responsible for protein degradation, play a key role in maintaining cellular homeostasis. Some studies have suggested a link between the dysregulation of the lysosomal system and pathogenesis of neurodegenerative diseases, including Alzheimer's disease. Restoring the normal physiological function of lysosomes hold the potential to reduce the pathological burden and improve the symptoms of Alzheimer's disease. Currently, the efficacy of drugs in treating Alzheimer's disease is limited, with major challenges in drug delivery efficiency and targeting. Recently, nanomaterials have gained widespread use in Alzheimer's disease drug research owing to their favorable physical and chemical properties. This review aims to provide a comprehensive overview of recent advances in using nanomaterials (polymeric nanomaterials, nanoemulsions, and carbon-based nanomaterials) to enhance lysosomal function in treating Alzheimer's disease. This review also explores new concepts and potential therapeutic strategies for Alzheimer's disease through the integration of nanomaterials and modulation of lysosomal function. In conclusion, this review emphasizes the potential of nanomaterials in modulating lysosomal function to improve the pathological features of Alzheimer's disease. The application of nanotechnology to the development of Alzheimer's disease drugs brings new ideas and approaches for future treatment of this disease.

The Potential Mechanism of D-Amino Acids - Mitochondria Axis in the Progression of Diabetic Kidney Disease

Diabetic kidney disease (DKD) is a major complication of diabetes mellitus (DM) and stands out as the leading cause of end-stage renal disease worldwide. There is increasing evidence that mitochondrial dysfunction, including impaired mitochondrial biogenesis, dynamics, and oxidative stress, contributes to the development and progression of DKD. D-amino acids (D-AAs), which are enantiomers of L-AAs, have recently been detected in various living organisms and are acknowledged to play important roles in numerous physiological processes in the human body. Accumulating evidence demonstrates that D-AA levels in blood or urine could serve as useful biomarkers for reflecting renal function. The physiological roles of D-AAs are implicated in the regulation of cellular proliferation, oxidative stress, generation of reactive oxygen species (ROS), and innate immunity. This article reviews current evidence relating to D-AAs and mitochondrial dysfunction and proposes a potential interaction and contribution of the D-AAs-mitochondria axis in DKD pathophysiology and progression. This insight could provide novel therapeutic approaches for preventing or ameliorating DKD based on this biological axis.

Complexation between curcumin and walnut protein isolate modified by pH shifting combined with protein-glutaminase

The poor techno-functional properties of walnut protein isolate (WPI) limit its application as carrier to improve bioavailability of curcumin. In this study, WPI was modified by pH-shifting (PS) and protein-glutaminase (PG). Changes on the physicochemical and structural characteristics of WPI and effects on complexation with curcumin were investigated. Treatment of PS plus PG increased electrostatic repulsion of WPI with altered secondary and tertiary structure. Solubility of WPI was greatly improved from 18.09% to 52.90%. The increased flexibility resulted in reduced particle size and increased exposure of hydrophobic groups. The improved amphiphilicity of WPI provided more binding sites for complexation with curcumin. Encapsulation efficiency of curcumin was increased from 32.50% to 94.48%. Interestingly, the formed complexes were able to protect curcumin from degradation with improved storage stability and bioaccessibility. Thus, PS plus PG could serve as effective modification strategy for utilization of WPI as a promising delivery vehicle for hydrophobic bioactives.

Investigating gut alterations in Alzheimer's disease: In-depth analysis with micro- and nano-3D X-ray phase contrast tomography

Alzheimer's disease (AD), a debilitating neurodegenerative disorder, remains one of the foremost public health challenges affecting more than 30 million people worldwide with the etiology still largely enigmatic. The intricate gut-brain axis, serving as a vital communication network between the gut and the brain, appears to wield influence in the progression of AD. Our study showcases the remarkable precision of x-ray phase-contrast tomography (XPCT) in conducting an advanced three-dimensional examination of gut cellular composition and structure. The exploitation of micro- and nano-XPCT on various AD mouse models unveiled relevant alterations in villi and crypts, cellular transformations in Paneth and goblet cells, along with the detection of telocytes, neurons, erythrocytes, and mucus secretion by goblet cells within the gut cavity. The observed gut structural variations may elucidate the transition from dysbiosis to neurodegeneration and cognitive decline. Leveraging XPCT could prove pivotal in early detection and prognosis of the disease.