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1.
Food Res Int ; 194: 114886, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39232520

RESUMEN

This research evaluated the occurrence and bioaccessibility of acrylamide and HMF in commercial instant coffees (IC) and coffee substitutes (CS), considering both isolated consumption and combination with milk. There were no significant differences in acrylamide content between IC and CS samples (median: 589 vs. 671 µg/kg), but higher variability was reported for CS, probably due to their varied composition (roasted cereals, nuts, honey, dehydrated fruits, and/or chicory). Acrylamide level were always below the EU benchmark for each category. HMF contents were similar between both groups (1354-5127 mg/kg for IC and 735-7134 mg/kg for CS; median: 2890 vs. 2960 mg/kg), with no clear ingredient relationship. Since IC consumption by the Spanish population is ten times higher than that of CS, exposure to acrylamide and HMF was higher from IC (6.8 vs. 1.07 ng/kg body weight/day for acrylamide; 39.1 vs. 4.2 µg/kg body weight/day for HMF). The standardized in vitro gastrointestinal digestion protocol (INFOGEST) was used. The gastrointestinal process reduced the bioaccessibility of acrylamide up to 27.2 % in IC and to 22.4 % in CS, regardless of the presence of milk. HMF bioaccessibility from IC significantly dropped after the gastrointestinal digestion, whereas it greatly increased for CS. The presence of milk did not affect HMF bioaccessibility. These results highlight the importance of assessing food bioaccessibility in typical consumption scenarios, providing a holistic view and a realistic evaluation of the potential risks associated with acrylamide and HMF exposure in the diet.


Asunto(s)
Acrilamida , Café , Digestión , Furaldehído , Leche , Acrilamida/análisis , Acrilamida/farmacocinética , Café/química , Leche/química , Animales , Furaldehído/análogos & derivados , Furaldehído/análisis , Disponibilidad Biológica , Contaminación de Alimentos/análisis , Humanos , España , Nueces/química , Bebidas/análisis
2.
BMC Plant Biol ; 24(1): 828, 2024 Sep 04.
Artículo en Inglés | MEDLINE | ID: mdl-39227757

RESUMEN

BACKGROUND: Walnut is an oilseed tree species and an ecologically important woody tree species that is rich in oil and nutrients. In light of differences in the lipid content, fatty acid composition and key genes expression patterns in different walnut varieties, the key gene regulatory networks for lipid biosynthesis in different varieties of walnuts were intensively investigated. RESULTS: The kernels of two walnut varieties, 'Xilin 3' (X3) and 'Xiangling' (XL) were sampled at 60, 90, and 120 days post-anthesis (DPA) to construct 18 cDNA libraries, and the candidate genes related to oil synthesis were identified via sequencing and expression analysis. A total of 106 differentially expressed genes associated with fatty acid biosynthesis, fatty acid elongation, unsaturated fatty acid biosynthesis, triglyceride assembly, and oil body storage were selected from the transcriptomes. Weighted gene co-expression network analysis (WGCNA), correlation analysis and quantitative validation confirmed the key role of the FAD3 (109002248) gene in lipid synthesis in different varieties. CONCLUSIONS: These results provide valuable resources for future investigations and new insights into genes related to oil accumulation and lipid metabolism in walnut seed kernels. The findings will also aid future molecular studies and ongoing efforts to genetically improve walnut.


Asunto(s)
Perfilación de la Expresión Génica , Juglans , Semillas , Juglans/genética , Juglans/metabolismo , Juglans/crecimiento & desarrollo , Semillas/genética , Semillas/metabolismo , Semillas/crecimiento & desarrollo , Transcriptoma , Regulación de la Expresión Génica de las Plantas , Lípidos/biosíntesis , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Nueces/genética , Nueces/crecimiento & desarrollo , Nueces/metabolismo , Genes de Plantas , Metabolismo de los Lípidos/genética , Redes Reguladoras de Genes
3.
Int J Mol Sci ; 25(17)2024 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-39273700

RESUMEN

Swietenia macrophylla fruit is a valuable and historically significant medicinal plant with anti-hypertension and anti-diabetes. We identified a toxic component, Febrifugin, from the edible part of the nut following zebrafish toxicity-guided isolation. Febrifugin is a mexicanolide-type limonoid compound. The toxic factor induced acute toxicity in zebrafish, including yolk sac edema and pericardial edema, reduced body length, decreased melanin deposition, and presented acute skeletal developmental issues. Further exploration of the acute toxicity mechanism through metabolomics revealed that Febrifugin caused significant changes in 13 metabolites in zebrafish larvae, which are involved in the pentose phosphate, tricarboxylic acid (TCA) cycle, and amino acid biosynthesis. The bioassay of oxidative stress capacity and qRT-PCR measurement showed that the compound significantly affected the h6pd gene in the pentose phosphate pathway and the mRNA expression of cs, idh3a, fh, and shda genes in the TCA cycle, leading to reactive oxygen species (ROS) accumulation and a notable decrease in glutathione (GSH) activity in zebrafish. These findings provide a basis for the rational use of S. macrophylla as a medicinal plant and raise awareness of the safety of medicinal plants.


Asunto(s)
Metabolómica , Pez Cebra , Animales , Pez Cebra/metabolismo , Metabolómica/métodos , Estrés Oxidativo/efectos de los fármacos , Meliaceae/química , Limoninas/farmacología , Especies Reactivas de Oxígeno/metabolismo , Nueces/química , Larva/efectos de los fármacos , Larva/metabolismo , Extractos Vegetales/farmacología , Extractos Vegetales/química , Metaboloma , Plantas Medicinales/química , Ciclo del Ácido Cítrico/efectos de los fármacos , Glutatión/metabolismo
5.
Nutrients ; 16(17)2024 Aug 23.
Artículo en Inglés | MEDLINE | ID: mdl-39275135

RESUMEN

(1) Background: The Portfolio Diet, a dietary pattern of cholesterol-lowering foods, is also rich in low glycemic index (GI) foods. While strong evidence supports clinically meaningful reductions in cholesterol, evidence on the relationship between the Portfolio Diet and diabetes management is lacking. (2) Objective: To evaluate the relationship between the Portfolio Diet and glycated hemoglobin (HbA1c) as a determinant of glycemic control among adults living with type 2 diabetes mellitus (T2DM). (3) Methods: Patient-level data was pooled from two randomized dietary trials of low glycemic index interventions compared to high cereal fibre control diets in adults living with T2DM where HbA1c was collected (clinicaltrials.gov identifiers: NCT00438698, NCT00438698). Dietary exposure was assessed using weighed 7-day diet records. Adherence to the Portfolio Diet and its pillars (nuts and seeds, plant protein, viscous fibre, plant sterols, monounsaturated fatty acid [MUFA] oils) was determined using the validated clinical Portfolio Diet Score (c-PDS). Multiple linear regression was used to assess the association between change in the c-PDS and change in HbA1c over 6-months with covariate adjustments. (4) Results: A total of 267 participants, predominantly White (67%) and male (63%), were included, with a mean ± standard error age of 62 ± 0.5 years, baseline BMI of 30.2 ± 0.3 kg/m2, HbA1c of 7.08 ± 0.03%, and a c-PDS of 4.1 ± 0.3 points out of 25. Change in the c-PDS was significantly associated with a change in HbA1c (ß: -0.04% per point, 95% CI: -0.07, -0.02, p = 0.001). A 7.5-point (30%) increase in the c-PDS was associated with a 0.3% reduction in HbA1c. Of the individual pillars, a 1-point change in nut and seeds intake (ß: -0.07%, 95% CI: -0.12, -0.02, p = 0.009) or in plant protein intake (ß: -0.11%, 95% CI: -0.18, -0.03, p = 0.009) was associated with a change in HbA1c. Further analysis of plant protein intake revealed that an increase in dietary pulse intake, a particularly low-GI food, was significantly associated with a reduction in HbA1c (ß: -0.24% per 1-cup points cooked pulses (226 g) or 2 c-PDS points, 95% CI: -0.45, -0.03, p = 0.028). (5) Conclusions: Among adults living with T2DM, the Portfolio Diet was associated with lower HbA1c over a 6-month period, predominantly driven by two pillars: nuts and seeds and plant protein, particularly dietary pulses. These data have implications for including the Portfolio Diet in dietary recommendations for glycemic control in T2DM. A trial demonstrating the direct causal effect of the Portfolio Diet in a diverse group is warranted.


Asunto(s)
Diabetes Mellitus Tipo 2 , Fibras de la Dieta , Hemoglobina Glucada , Humanos , Diabetes Mellitus Tipo 2/dietoterapia , Diabetes Mellitus Tipo 2/sangre , Hemoglobina Glucada/metabolismo , Hemoglobina Glucada/análisis , Masculino , Femenino , Persona de Mediana Edad , Fibras de la Dieta/administración & dosificación , Anciano , Índice Glucémico , Nueces , Dieta/métodos , Control Glucémico/métodos , Glucemia/metabolismo , Ensayos Clínicos Controlados Aleatorios como Asunto , Fitosteroles/administración & dosificación , Ácidos Grasos Monoinsaturados/administración & dosificación
6.
Nutrients ; 16(17)2024 Aug 29.
Artículo en Inglés | MEDLINE | ID: mdl-39275205

RESUMEN

Metabolic syndrome has become a significant public health concern. This study aims to investigate the impact of dietary patterns on metabolic syndrome in young adults and how physical activity modulates this effect. A cross-sectional study was conducted at a health management center in Tianjin, China, from September 2022 to March 2023. Participants aged 18-35 years were recruited using convenience sampling. Dietary intake was assessed using a validated food frequency questionnaire. Logistic regression models evaluated associations between these patterns and metabolic syndrome, adjusting for potential confounders. Among 442 participants, four dietary patterns were identified: Legume-Nut, Alcohol-Meat, Sugar-Processed, and Egg-Vegetable. The Legume-Nut dietary pattern was associated with a higher risk of metabolic syndrome (OR = 2.63, 95% CI: 1.08-6.37), while the Egg-Vegetable dietary pattern was associated with a lower risk (OR = 0.26, 95% CI: 0.10-0.70). No significant associations were found for the Sugar-Processed and Alcohol-Meat patterns. Subgroup analysis revealed that the Legume-Nut pattern increased the risk of metabolic syndrome among those with irregular physical activity, whereas the Egg-Vegetable pattern decreased the risk. These findings highlight the significant influence of dietary patterns on the risk of metabolic syndrome in young adults and the modifying effect of regular physical activity, underscoring the need for targeted dietary and lifestyle interventions to prevent metabolic syndrome in this population.


Asunto(s)
Dieta , Ejercicio Físico , Síndrome Metabólico , Humanos , Síndrome Metabólico/epidemiología , Síndrome Metabólico/etiología , Estudios Transversales , Adulto Joven , Masculino , Femenino , Adulto , Adolescente , Dieta/estadística & datos numéricos , China/epidemiología , Conducta Alimentaria , Factores de Riesgo , Fabaceae , Nueces , Verduras , Patrones Dietéticos
7.
Nutrients ; 16(17)2024 Aug 28.
Artículo en Inglés | MEDLINE | ID: mdl-39275198

RESUMEN

Particulate matter (PM2.5) containing polycyclic aromatic hydrocarbons (PAHs) is of considerable environmental importance worldwide due to its adverse effects on human health, which are associated with neurodegenerative diseases (NDDs). Areca catechu L. (AC) fruit is known to possess various pharmacological properties; however, the anti-neuroinflammatory roles of AC on the suppression of PAH-induced neuroinflammation are still limited. Thus, we focused on the effects and related signaling cascades of AC and its active compounds against anthracene-induced toxicity and inflammation in mouse microglial BV-2 cells. Phytochemicals in the ethanolic extract of AC (ACEE) were identified using LC-MS, and molecular docking was conducted to screen the interaction between compounds and target proteins. Significant bioactive compounds in ACEE such as arecoline, (-)-epicatechin, and syringic acid were evinced through the LC-MS spectrum. The docking study revealed that (-)-epicatechin showed the highest binding affinities against NF-κB. For cell-based approaches, anthracene induced intracellular ROS, mRNA levels of TNF-α, IL-1ß, and IL-6, and the release of TNF-α through enhancing JNK, p38, and NF-κB signaling pathways. However, the co-treatment of cells with ACEE or (-)-epicatechin could reverse those anthracene-induced changes. The overall study suggested that ACEE-derived bioactive compounds such as (-)-epicatechin may be developed as a potential anti-neuroinflammatory agent by preventing inflammation-mediated NDDs.


Asunto(s)
Antracenos , Antiinflamatorios , Areca , Microglía , Simulación del Acoplamiento Molecular , Extractos Vegetales , Microglía/efectos de los fármacos , Microglía/metabolismo , Animales , Ratones , Extractos Vegetales/farmacología , Extractos Vegetales/química , Antracenos/farmacología , Antiinflamatorios/farmacología , Línea Celular , Areca/química , Fitoquímicos/farmacología , Nueces/química , Transducción de Señal/efectos de los fármacos , Enfermedades Neuroinflamatorias/tratamiento farmacológico , FN-kappa B/metabolismo
8.
Food Res Int ; 194: 114873, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39232512

RESUMEN

This study investigates the metabolome of high-quality hazelnuts (Corylus avellana L.) by applying untargeted and targeted metabolome profiling techniques to predict industrial quality. Utilizing comprehensive two-dimensional gas chromatography and liquid chromatography coupled with high-resolution mass spectrometry, the research characterizes the non-volatile (primary and specialized metabolites) and volatile metabolomes. Data fusion techniques, including low-level (LLDF) and mid-level (MLDF), are applied to enhance classification performance. Principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) reveal that geographical origin and postharvest practices significantly impact the specialized metabolome, while storage conditions and duration influence the volatilome. The study demonstrates that MLDF approaches, particularly supervised MLDF, outperform single-fraction analyses in predictive accuracy. Key findings include the identification of metabolites patterns causally correlated to hazelnut's quality attributes, of them aldehydes, alcohols, terpenes, and phenolic compounds as most informative. The integration of multiple analytical platforms and data fusion methods shows promise in refining quality assessments and optimizing storage and processing conditions for the food industry.


Asunto(s)
Corylus , Metaboloma , Metabolómica , Análisis de Componente Principal , Corylus/química , Metabolómica/métodos , Inteligencia Artificial , Análisis de los Mínimos Cuadrados , Análisis Discriminante , Calidad de los Alimentos , Nueces/química , Análisis de los Alimentos/métodos , Compuestos Orgánicos Volátiles/análisis
9.
Food Res Int ; 194: 114870, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39232510

RESUMEN

Almonds are a commonly consumed nut. They possess significantof nutritional and health benefitsand are commonly processed by roasting. This study aimed to investigatthe effects of roasting on the compound composition and antioxidant activity of almonds. Metabolomics analysis, performed via UPLC-QTOF/MS, and fatty acid analysis, conducted via GC-MS, employed, and the results demonstrated a significant increase in antioxidant activity of post-roasting and in vitro digestion, ranging from 1.16 to 3.44 times. Untargeted metabolomics identified a total of 172 compounds, with notable differences observed in organic oxides, fatty acids, and their derivatives. Correlation analysis identified fatty acids as the primary influencers of changes in antioxidant activity following roasting. Taken together, these findings suggest that roasting enhances the antioxidant activity of almonds, primarily due to alterations in fatty acid analogs, thereby providing valuable insights into optimizing almond consumption for health benefits.


Asunto(s)
Antioxidantes , Ácidos Grasos , Cromatografía de Gases y Espectrometría de Masas , Metabolómica , Prunus dulcis , Antioxidantes/análisis , Antioxidantes/metabolismo , Metabolómica/métodos , Prunus dulcis/química , Cromatografía Líquida de Alta Presión , Ácidos Grasos/análisis , Culinaria/métodos , Nueces/química , Calor , Manipulación de Alimentos/métodos , Espectrometría de Masas en Tándem
10.
Nutrients ; 16(16)2024 Aug 10.
Artículo en Inglés | MEDLINE | ID: mdl-39203780

RESUMEN

Walnuts (Juglans regia L.) have shown promising effects in terms of ameliorating inflammatory bowel disease (IBD), attributed to their abundant bioactive compounds. This review comprehensively illustrates the key mechanisms underlying the therapeutic potential of walnuts in IBD management, including the modulation of intestinal mucosa permeability, the regulation of inflammatory pathways (such as NF-kB, COX/COX2, MAPCK/MAPK, and iNOS/NOS), relieving oxidative stress, and the modulation of gut microbiota. Furthermore, we highlight walnut-derived anti-inflammatory compounds, such as polyunsaturated fatty acids (PUFA; e.g., ω-3 PUFA), tocopherols, phytosterols, sphingolipids, phospholipids, phenolic compounds, flavonoids, and tannins. We also discuss unique anti-inflammatory compounds such as peptides and polysaccharides, including their extraction and preparation methods. Our review provides a theoretical foundation for dietary walnut supplementation in IBD management and provides guidance for academia and industry. In future, research should focus on the targeted isolation and purification of walnut-derived anti-inflammatory compounds or optimizing extraction methods to enhance their yields, thereby helping the food industry to develop dietary supplements or walnut-derived functional foods tailored for IBD patients.


Asunto(s)
Antiinflamatorios , Enfermedades Inflamatorias del Intestino , Juglans , Nueces , Juglans/química , Humanos , Antiinflamatorios/farmacología , Enfermedades Inflamatorias del Intestino/tratamiento farmacológico , Nueces/química , Microbioma Gastrointestinal/efectos de los fármacos , Mucosa Intestinal/efectos de los fármacos , Mucosa Intestinal/metabolismo , Fitoquímicos/farmacología , Animales , Inflamación/tratamiento farmacológico , Extractos Vegetales/farmacología , Estrés Oxidativo/efectos de los fármacos , Suplementos Dietéticos
11.
J Agric Food Chem ; 72(34): 19051-19060, 2024 Aug 28.
Artículo en Inglés | MEDLINE | ID: mdl-39155698

RESUMEN

Walnut shells, often discarded as waste, hold hidden potential as a source of ellagitannins (ETs), compounds known for their promising antioxidant properties and health benefits. This study employed reversed-phase liquid chromatography (RPLC) coupled with Orbitrap-based high-resolution mass spectrometry (HRMS) via electrospray ionization (ESI) in negative polarity to investigate the ET profile in extracts of dried powdered walnut shells. Several compounds belonging to various ET families were successfully identified as deprotonated molecules ([M - H]-) and characterized, including mono-, di-, tri-, tetra-, and pentagalloyl glucopyranoses, as well as ETs containing the hexahydroxydiphenoyl (HHDP) group. Characteristic product ions were identified in HR tandem MS spectra and employed to recognize the ET landscape. Analysis revealed a complex picture with more than 10 isomers identified in some cases. However, the structural similarity and limitations in MS/MS data hindered the definitive identification of all isomers. Characterization of ETs featuring HHDP groups also remained challenging. Despite these restraints, the estimated total content of ETs suggests potential application in the food, pharmaceutical, and cosmetic industries of those extracts. These findings indicate that walnut shells can be considered a sustainable source of health-promoting compounds, contributing to a greener economy.


Asunto(s)
Taninos Hidrolizables , Juglans , Nueces , Extractos Vegetales , Espectrometría de Masas en Tándem , Taninos Hidrolizables/química , Taninos Hidrolizables/análisis , Juglans/química , Espectrometría de Masas en Tándem/métodos , Extractos Vegetales/química , Nueces/química , Cromatografía Líquida de Alta Presión/métodos , Cromatografía Liquida/métodos , Residuos/análisis , Estructura Molecular
12.
J Hum Evol ; 195: 103582, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39213793

RESUMEN

The earliest evidence for complex tool use in the archaeological record dates to 3.3 Ma. While wooden tools may have been used by our earliest ancestors, the evidence is absent due to poor preservation. However, insights into possible early hominin wooden tool use can be gained from observing the tool-use practices of our closest living relatives, chimpanzees (Pan troglodytes). By using stone hammers used to crack various nuts, chimpanzees leave a durable material signature comprised of formal tools and associated diagnostic fragments. While the archaeological evidence of chimpanzee wooden tool use is temporary, the combination of stone hammers and wooden anvils can create a more enduring lithic record. This study explores the lithic assemblages associated with wooden and stone anvil use at nut-cracking sites in Taï National Park, Côte d'Ivoire, using technological and use-wear analyses. Our results indicate clear differences in density, fracture patterns, and use-wear in the lithic records between wooden anvil and stone anvil sites. New archaeological excavations at six chimpanzee nut-cracking sites reveal that the anvils' material directly influences the visibility of nut-cracking evidence in the archaeological record. By examining the nature of the lithic signatures associated with wooden anvil and stone anvil use by chimpanzees, we can formulate hypotheses about the probability of such behaviors being preserved and identifiable in the Plio-Pleistocene hominin archaeological record. The variability in material signatures from nut-cracking on different anvils suggests that stone anvils leave a clear archaeological record. Evidence for wooden anvil use is likely underrepresented due to the more ephemeral nature of the associated percussive damage and material signature. It may, however, still be possible, albeit challenging, to identify wooden anvil use in the archaeological record.


Asunto(s)
Arqueología , Nueces , Pan troglodytes , Comportamiento del Uso de la Herramienta , Animales , Côte d'Ivoire , Madera
13.
Environ Monit Assess ; 196(9): 777, 2024 Aug 03.
Artículo en Inglés | MEDLINE | ID: mdl-39095686

RESUMEN

Efforts are ongoing to utilise agricultural waste to achieve a full resource use approach. Bambara groundnut is an important crop widely grown in the sub-Saharan Africa with potential future importance because of its resilience to thrive under heightened weather uncertainty and widespread droughts that have challenged food security. After harvesting, the edible nuts are separated from the shells which are discarded as waste. Therefore, this research is aimed at characterising the chemical composition and the structural properties of Bambara groundnut shells (BGS) in view of their potential application as a biomass for different bio-products. The chemical composition of BGS was found to be 42.4% cellulose, 27.8% hemicellulose, 13% lignin and 16.8% extractives. Proximate analysis showed a high amount of volatile matter (69.1%) and low moisture (4.4%). XRD analysis confirmed crystallinity of cellulose I polymer and FTIR analysis observed functional groups of lignocellulosic compounds. Thermal stability, maximum degradation temperature and activation energy were found to be 178.5 °C, 305.7 °C and 49.4 kJ/mol, respectively. Compared to other nutshells, BGS were found to have a relatively high amount of cellulose and crystallinity that may result in biocomposites with improved mechanical properties.


Asunto(s)
Biomasa , Vigna , Vigna/química , Lignina/química , Lignina/análisis , Celulosa/química , Celulosa/análisis , Residuos/análisis , Nueces/química , Biocombustibles , Polisacáridos
14.
J Agric Food Chem ; 72(36): 19786-19799, 2024 Sep 11.
Artículo en Inglés | MEDLINE | ID: mdl-39187786

RESUMEN

Bioactive peptides, derived from short protein fragments, are recognized for their neuroprotective properties and potential therapeutic applications in treating central nervous system (CNS) diseases. However, a significant challenge for these peptides is their ability to penetrate the blood-brain barrier (BBB). EVSGPGYSPN (EV-10) peptide, a walnut-derived peptide, has demonstrated promising neuroprotective effects in vivo. This study aimed to investigate the transportability of EV-10 across the BBB, explore its capacity to penetrate this barrier, and elucidate the regulatory mechanisms underlying peptide-induced cellular internalization and transport pathways within the BBB. The results indicated that at a concentration of 100 µM and osmotic time of 4 h, the apparent permeability coefficient of EV-10 was Papp = 8.52166 ± 0.58 × 10-6 cm/s. The penetration efficiency of EV-10 was influenced by time, concentration, and temperature. Utilizing Western blot analysis, immunofluorescence, and flow cytometry, in conjunction with the caveolin (Cav)-specific inhibitor M-ß-CD, we confirmed that EV-10 undergoes transcellular transport through a Cav-dependent endocytosis pathway. Notably, the tight junction proteins ZO-1, occludin, and claudin-5 were not disrupted by EV-10. Throughout its transport, EV-10 was localized within the mitochondria, Golgi apparatus, endoplasmic reticulum, lysosomes, endosomes, and cell membranes. Moreover, Cav-1 overexpression facilitated the release of EV-10 from lysosomes. Evidence of EV-10 accumulation was observed in mouse brains using brain slice scans. This study is the first to demonstrate that Cav-1 can facilitate the targeted delivery of walnut-derived peptide to the brain, laying a foundation for the development of functional foods aimed at CNS disease intervention.


Asunto(s)
Barrera Hematoencefálica , Juglans , Péptidos , Juglans/química , Juglans/metabolismo , Barrera Hematoencefálica/metabolismo , Animales , Ratones , Péptidos/química , Péptidos/metabolismo , Péptidos/farmacología , Transporte Biológico , Caveolinas/metabolismo , Caveolinas/química , Humanos , Endocitosis , Proteínas de Plantas/metabolismo , Proteínas de Plantas/química , Nueces/química , Nueces/metabolismo
15.
J Appl Microbiol ; 135(9)2024 Sep 02.
Artículo en Inglés | MEDLINE | ID: mdl-39138062

RESUMEN

AIM: The aim of this study was to purify proanthocyanidins from areca nut seeds (P-AN) and to investigate the bactericidal activity and mechanism of the purified products against Streptococcus mutans. METHODS AND RESULTS: Ultra-performance liquid chromatography tandem quadrupole time-of-flight mass spectrometry, Fourier transform infrared, Matrix-assisted laser desorption/ ionization time of flight mass spectrometry (MADLI-TOF-MS), and thiolysis experiment were used for P-AN chemical analysis. Time-kill analysis and glycolytic pH drop were used to evaluate the activity of S. mutans in vitro. Meanwhile, the investigation of the bacteriostatic mechanism included membrane protein, fluidity, permeability, and integrity tests. The results showed that P-AN was a kind of proanthocyanidin mainly composed of B-type proanthocyanidins and their polymers. Moreover, MADLI-TOF-MS and thiolysis experiments demonstrated that the degree of polymerization of P-AN was 13. The time-kill analysis showed that P-AN had strong bactericidal activity against S. mutans. P-AN at minimum inhibitory concentration (MIC) concentrations was able to induce S. mutans death, while complete lethality occurred at 2 MIC. Glycolysis test showed that P-AN significantly inhibited S. mutans acid production (P < .01). The morphological changes of S. mutans were observed by scanning electron microscopy and transmission electron microscopy experiments, which indicated that P-AN destroyed the cellular structure of S. mutans. At the same time, significant changes were observed in membrane proteins, fluidity, permeability, and integrity. CONCLUSION: P-AN can effectively inhibit the activity of S. mutans. P-AN can reduce the erosion of the tooth surface by the acid of S. mutans. P-AN could break the structure of the cell membrane protein of S. mutans. P-AN could destroy the integrity of membrane, resulting in the death of S. mutans.


Asunto(s)
Antibacterianos , Pruebas de Sensibilidad Microbiana , Proantocianidinas , Semillas , Streptococcus mutans , Proantocianidinas/farmacología , Proantocianidinas/aislamiento & purificación , Proantocianidinas/química , Streptococcus mutans/efectos de los fármacos , Semillas/química , Antibacterianos/farmacología , Antibacterianos/aislamiento & purificación , Nueces/química , Extractos Vegetales/farmacología , Extractos Vegetales/química , Extractos Vegetales/aislamiento & purificación
16.
J Exp Clin Cancer Res ; 43(1): 233, 2024 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-39160581

RESUMEN

BACKGROUND: Betel quid and its major ingredient, areca nut, are recognized by IARC as major risk factors in oral cancer development. Areca nut extract (ANE) exposure has been linked to OPMD progression and malignant transformation to OSCC. However, the detailed mechanism through which ANE acts on other cell types in the oral microenvironment to promote oral carcinogenesis remains elusive. METHODS: Immunoprofiling of macrophages associated with OPMD and OSCC was carried out by immunohistochemical and immunofluorescence staining. Phosphokinase and cytokine arrays and western blotting were performed to determine the underlying mechanisms. Transwell assays were used to evaluate the migration-promoting effect of ANE. Hamster model was finally applied to confirm the in vivo effect of ANE. RESULTS: We reported that M2 macrophages positively correlated with oral cancer progression. ANE induced M2 macrophage differentiation, CREB phosphorylation and VCAM-1 secretion and increased mitochondrial metabolism. Conditioned medium and VCAM-1 from ANE-treated macrophages promoted migration and mesenchymal phenotypes in oral precancer cells. In vivo studies showed that ANE enhanced M2 polarization and related signaling pathways in the oral buccal tissues of hamsters. CONCLUSION: Our study provides novel mechanisms for areca nut-induced oral carcinogenesis, demonstrating that areca nut promotes M2 macrophage differentiation and secretion of oncogenic cytokines that critically activate malignant transformation of oral premalignant cells.


Asunto(s)
Areca , Diferenciación Celular , Transformación Celular Neoplásica , Macrófagos , Neoplasias de la Boca , Animales , Areca/efectos adversos , Areca/química , Transformación Celular Neoplásica/metabolismo , Neoplasias de la Boca/patología , Neoplasias de la Boca/metabolismo , Humanos , Macrófagos/metabolismo , Cricetinae , Modelos Animales de Enfermedad , Nueces , Masculino , Reprogramación Metabólica
17.
Crit Rev Food Sci Nutr ; 64(21): 7426-7450, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-39093582

RESUMEN

The health benefits of nut consumption have been extensively demonstrated in observational studies and intervention trials. Besides the high nutritional value, countless evidences show that incorporating nuts into the diet may contribute to health promotion and prevention of certain diseases. Such benefits have been mostly and certainly attributed not only to their richness in healthy lipids (plentiful in unsaturated fatty acids), but also to the presence of a vast array of phytochemicals, such as polar lipids, squalene, phytosterols, tocochromanols, and polyphenolic compounds. Thus, many nut chemical compounds apply well to the designation "nutraceuticals," a broad umbrella term used to describe any food component that, in addition to the basic nutritional value, can contribute extra health benefits. This contribution analyses the general chemical profile of groundnut and common tree nuts (almond, walnut, cashew, hazelnut, pistachio, macadamia, pecan), focusing on lipid components and phytochemicals, with a view on their bioactive properties. Relevant scientific literature linking consumption of nuts, and/or some of their components, with ameliorative and/or preventive effects on selected diseases - such as cancer, cardiovascular, metabolic, and neurodegenerative pathologies - was also reviewed. In addition, the bioactive properties were analyzed in the light of known mechanistic frameworks.


Asunto(s)
Suplementos Dietéticos , Juglans , Nueces , Fitoquímicos , Pistacia , Nueces/química , Fitoquímicos/análisis , Fitoquímicos/farmacología , Humanos , Suplementos Dietéticos/análisis , Juglans/química , Pistacia/química , Lípidos/análisis , Valor Nutritivo , Anacardium/química , Macadamia/química , Corylus/química , Fitosteroles/análisis , Carya/química , Prunus dulcis/química , Enfermedades Cardiovasculares/prevención & control
18.
Food Chem ; 460(Pt 1): 140440, 2024 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-39032301

RESUMEN

There has been limited research on external browning (EB) of walnut. This work discovered 1888 metabolites and 34 anthocyanins in walnut pellicles (WPs) after three drying methods using widely-targeted and anthocyanin-targeted metabolomics. Based on OPLS-DA and correlation analysis, 64 temperature-responsive metabolites (TRMs; 13 anthocyanins and 51 flavonoids) were identified as critical components in relation to EB. Notably, 14 flavonoids exhibited a strong positive correlation (r > 0.9) with the browning index (BI), with upregulation of >60% after browning. Most of the identified anthocyanins were negatively linked with BI because of degradation (>45%), with correlation coefficients ranging from 0.75 to 0.97. Furthermore, anthocyanidin reductase and laccase were the two key enzymes involved in the EB of WPs, with their activities increasing by 10.57-fold and 1.32-fold, respectively, with increasing drying temperature. A metabolic pathway network of the TRM was built to provide insights into the potential mechanisms underlying EB in WPs.


Asunto(s)
Antocianinas , Juglans , Metabolómica , Juglans/química , Juglans/metabolismo , Antocianinas/metabolismo , Antocianinas/química , Desecación , Reacción de Maillard , Semillas/química , Semillas/metabolismo , Semillas/crecimiento & desarrollo , Nueces/química , Nueces/metabolismo , Flavonoides/metabolismo , Flavonoides/química
19.
Int J Mol Sci ; 25(13)2024 Jun 21.
Artículo en Inglés | MEDLINE | ID: mdl-38999950

RESUMEN

Macadamia nuts are one of the most important economic food items in the world. Pericarp thickness and flavonoid composition are the key quality traits of Macadamia nuts, but the underlying mechanism of pericarp formation is still unknown. In this study, three varieties with significantly different pericarp thicknesses, namely, A38, Guire No.1, and HAES 900, at the same stage of maturity, were used for transcriptome analysis, and the results showed that there were significant differences in their gene expression profile. A total of 3837 new genes were discovered, of which 1532 were functionally annotated. The GO, COG, and KEGG analysis showed that the main categories in which there were significant differences were flavonoid biosynthesis, phenylpropanoid biosynthesis, and the cutin, suberine, and wax biosynthesis pathways. Furthermore, 63 MiMYB transcription factors were identified, and 56 R2R3-MYB transcription factors were clustered into different subgroups compared with those in Arabidopsis R2R3-MYB. Among them, the S4, S6, and S7 subgroups were involved in flavonoid biosynthesis and pericarp formation. A total of 14 MiMYBs' gene expression were verified by RT-qPCR analysis. These results provide fundamental knowledge of the pericarp formation regulatory mechanism in macadamia nuts.


Asunto(s)
Perfilación de la Expresión Génica , Regulación de la Expresión Génica de las Plantas , Macadamia , Nueces , Proteínas de Plantas , Factores de Transcripción , Transcriptoma , Macadamia/genética , Macadamia/metabolismo , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Perfilación de la Expresión Génica/métodos , Nueces/genética , Nueces/metabolismo , Factores de Transcripción/genética , Factores de Transcripción/metabolismo , Transcriptoma/genética , Flavonoides/biosíntesis , Flavonoides/metabolismo , Familia de Multigenes , Arabidopsis/genética , Arabidopsis/metabolismo , Filogenia
20.
J Nutr ; 154(9): 2670-2679, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39025334

RESUMEN

BACKGROUND: Obesity is associated with low-grade inflammation and increased intestinal permeability (IP). The Brazil nut (BN) (Bertholletia excelsa H.B.K.) appears to be a promising dietary intervention to control inflammation by enhancing antioxidant defenses. OBJECTIVES: We aimed to assess the effect of daily BN consumption on inflammatory biomarkers and IP in the context of an energy-restricted intervention. Furthermore, we evaluated the correlation between the changes in these inflammatory markers and the changes in serum selenium and IP. METHODS: In this 8-wk nonrandomized controlled trial, 56 women with overweight or obesity were allocated into 2 groups, both following an energy-restricted diet (-500 kcal/d). The control group (CO) consumed a nut-free diet, while the BN group consumed 8 g BN/d, providing 347.2 µg selenium (Se). Inflammatory cytokines were analyzed in plasma and Se in serum. IP was assessed using the lactulose/mannitol test (LM ratio). RESULTS: Forty-six women completed the intervention. Both groups achieved similar energy restriction (CO Δ= -253.7 ± 169.4 kcal/d; BN Δ= -265.8 ± 141.8 kcal/d) and weight loss (CO Δ= -2.5 ± 0.5 kg; BN Δ= -3.5 ± 0.5 kg). The BN group showed lower values of C-reactive protein, tumor necrosis factor, interleukin (IL)1-ß, IL-8, percentage lactulose excretion, and LM ratio than the CO group. Additionally, changes in serum Se concentration were predictive of changes in IL-8 concentration (ß: -0.054; adjusted R2: 0.100; 95% confidence interval [CI]: -0.100; -0.007; P = 0.025), and changes in IL-8 were predictive of changes in the LM ratio (ß: 0.006; adjusted R2: 0.101; 95% CI: 0.001, 0.011; P = 0.024). CONCLUSIONS: Regular intake of BNs can be a promising complementary dietary strategy for controlling low-grade inflammation and improving IP in women with overweight/obesity undergoing energy-restricted treatment. However, the effects of BNs seem to be Se status-dependent. This trial was registered at the Brazilian Registry of Clinical Trials (ReBEC: https://ensaiosclinicos.gov.br/rg/RBR-3ntxrm/.


Asunto(s)
Bertholletia , Biomarcadores , Obesidad , Sobrepeso , Selenio , Humanos , Femenino , Bertholletia/química , Adulto , Obesidad/dietoterapia , Obesidad/sangre , Biomarcadores/sangre , Sobrepeso/dietoterapia , Sobrepeso/sangre , Persona de Mediana Edad , Selenio/sangre , Inflamación/sangre , Restricción Calórica , Permeabilidad , Brasil , Nueces , Citocinas/sangre , Funcion de la Barrera Intestinal
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