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1.
Phytomedicine ; 108: 154520, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36334386

RESUMEN

BACKGROUND: The development of digital technologies and the evolution of open innovation approaches have enabled the creation of diverse virtual organizations and enterprises coordinating their activities primarily online. The open innovation platform titled "International Natural Product Sciences Taskforce" (INPST) was established in 2018, to bring together in collaborative environment individuals and organizations interested in natural product scientific research, and to empower their interactions by using digital communication tools. METHODS: In this work, we present a general overview of INPST activities and showcase the specific use of Twitter as a powerful networking tool that was used to host a one-week "2021 INPST Twitter Networking Event" (spanning from 31st May 2021 to 6th June 2021) based on the application of the Twitter hashtag #INPST. RESULTS AND CONCLUSION: The use of this hashtag during the networking event period was analyzed with Symplur Signals (https://www.symplur.com/), revealing a total of 6,036 tweets, shared by 686 users, which generated a total of 65,004,773 impressions (views of the respective tweets). This networking event's achieved high visibility and participation rate showcases a convincing example of how this social media platform can be used as a highly effective tool to host virtual Twitter-based international biomedical research events.


Asunto(s)
Productos Biológicos , Medios de Comunicación Sociales , Humanos
2.
Food Funct ; 11(1): 297-304, 2020 Jan 29.
Artículo en Inglés | MEDLINE | ID: mdl-31915782

RESUMEN

In recent years, the conversion of white adipocytes to brown-like adipocytes by pharmacological and dietary compounds has gained attention as an effective strategy to fight obesity. Strawberry bioactive compounds present several biological activities including antioxidant, anti-inflammatory, anti-cancer, anti-atherosclerotic and antiadipogenic properties. However, to the best of our knowledge, the possible role of strawberry bioactive compounds in white adipose tissue (WAT) browning has never been explored. Our results demonstrated that a strawberry methanolic extract (SE) significantly reduced 3T3-L1 pre-adipocytes differentiation, and down-regulated the mRNA expression of the adipogenic transcription factors CCAAT/enhancer-binding protein (C/REB- α) and peroxisome proliferation-activated receptor (PPAR-γ). It also down-regulated the mRNA expression of resistin and angiotensinogen, two genes considered as markers of white adipocytes, while increased the mRNA expression of pyruvate dehydrogenase lipoamide kinase isozyme 4 (PDK4) and uncoupling protein 1 (UCP1) which, conversely, are brown adipocyte-specific markers. Likewise, SE stimulated AMP-activated protein kinase (AMPKα), sirtuin 1 (Sirt1) and the peroxisome proliferator activated receptor gamma coactivator 1-alpha (PGC-1α), suggesting a possible increase in mitochondrial biogenesis. It also stimulated oxygen consumption rate and uncoupled respiration. Taken together, all these results suggest that SE induces brown fat-like phenotype in 3T3-L1 cells and may have potential therapeutic implications for treatment and/or prevention of obesity.


Asunto(s)
Adipocitos Marrones/citología , Adipocitos Blancos/efectos de los fármacos , Adipogénesis/efectos de los fármacos , Fragaria/química , Extractos Vegetales/farmacología , Células 3T3-L1 , Proteínas Quinasas Activadas por AMP/metabolismo , Adipocitos Blancos/citología , Animales , Proteína alfa Potenciadora de Unión a CCAAT/metabolismo , Diferenciación Celular , Metanol , Ratones , PPAR gamma/metabolismo , Piruvato Deshidrogenasa Quinasa Acetil-Transferidora/metabolismo , Sirtuina 1/metabolismo , Factores de Transcripción/metabolismo , Proteína Desacopladora 1/metabolismo
3.
Food Funct ; 10(11): 7103-7120, 2019 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-31621765

RESUMEN

The aim of this study was the evaluation of the effects of strawberry anthocyanin extract treatment on two in vitro models of murine breast cancer cell lines, in an attempt to detect a specific pathway (AMP-activated protein kinase or AMPK) through which strawberries exert their anticancer activity. The anticancer activity of purified anthocyanin extracts from an Alba cultivar on two murine cancer cell lines, N202/1A (with high levels of the HER2/neu oncogene) and N202/1E (with low levels of the HER2/neu oncogene), was evaluated after 48 and 72 h of treatment. The cell viability and apoptosis, intracellular ROS rates, and cell oxidative damage were assessed. Western blot assays were performed to analyze the expression of several proteins related to apoptosis, autophagy, metastasis, the oxidative status, mitochondrial functionality, and the AMPK pathway. This study demonstrated that the anthocyanin extract of Alba strawberry shows an antiproliferative effect on cancer cells, through the induction of apoptosis and oxidative stress, by stimulating different molecular pathways. This study is one of the first studies that have tried to deepen the understanding of a candidate pathway for the explanation of the effects of strawberry on cancer cells. A relationship between the AMPK pathway and the anticancer effects of strawberries was demonstrated.


Asunto(s)
Antocianinas/farmacología , Neoplasias de la Mama/fisiopatología , Fragaria/química , Extractos Vegetales/farmacología , Proteínas Quinasas Activadas por AMP/genética , Proteínas Quinasas Activadas por AMP/metabolismo , Animales , Antocianinas/aislamiento & purificación , Apoptosis/efectos de los fármacos , Autofagia/efectos de los fármacos , Neoplasias de la Mama/genética , Neoplasias de la Mama/metabolismo , Línea Celular Tumoral , Supervivencia Celular/efectos de los fármacos , Femenino , Humanos , Ratones , Mitocondrias/efectos de los fármacos , Mitocondrias/metabolismo , Estrés Oxidativo/efectos de los fármacos , Extractos Vegetales/aislamiento & purificación , Especies Reactivas de Oxígeno/metabolismo
4.
J Cell Physiol ; 234(5): 7622-7633, 2019 05.
Artículo en Inglés | MEDLINE | ID: mdl-30317591

RESUMEN

Uterine leiom yomas are benign tumors highly prevalent in reproductive women. In thecurrent study, initially, we aimed to screen five different strawberry cultivars (Alba, Clery, Portola, Tecla, and Romina) to identify efficient cultivars in terms of phytochemical characterization and biological properties by measuring phenolic and anthocyanin content as well as antioxidant capacity, and by measuring apoptotic rate and reactive oxygen species (ROS) production in uterine leiomyoma cells. Next, we focused on the most efficient ones, cultivar Alba (A) and Romina (R) as well as Romina anthocyanin (RA) fraction for their ability to regulate oxidative phosphorylation (oxygen consumption rate [OCR]) glycolysis (extracellular acidification rate [ECAR]), and also fibrosis. Leiomyoma and myometrial cells were treated with a methanolic extract of A and R (250 µg/ml) or with RA (50 µg/ml) for 48 hr to measure OCR and ECAR, as well as gene expression associated with fibrosis. In the leiomyoma cells, RA was more effective in inducing apoptosis and increasing intracellular ROS levels, followed by R and A. In myometrial cells, all strawberry treatments increased the cellular viability and decreased ROS concentrations. Leiomyoma cells showed also a significant decrease in ECAR, especially after RA treatment, while OCR was slightly increased in both myometrial and leiomyoma cells. R and RA treatment significantly decreased collagen 1A1, fibronectin, versican, and activin A messenger RNA expression in leiomyoma cells. In conclusion, this study suggests that Romina, or its anthocyanin fraction, can be developed as a therapeutic and/or preventive agent for uterine leiomyomas, confirming the healthy effects exerted by these fruits and their bioactive compounds.


Asunto(s)
Fragaria/química , Leiomioma/tratamiento farmacológico , Preparaciones de Plantas/farmacología , Neoplasias Uterinas/tratamiento farmacológico , Activinas/farmacología , Antioxidantes/metabolismo , Apoptosis/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Colágeno Tipo I/metabolismo , Femenino , Fibronectinas/metabolismo , Fibrosis/tratamiento farmacológico , Fibrosis/metabolismo , Expresión Génica/efectos de los fármacos , Glucólisis/efectos de los fármacos , Humanos , Leiomioma/metabolismo , Fosforilación Oxidativa/efectos de los fármacos , Especies Reactivas de Oxígeno/metabolismo , Células Tumorales Cultivadas , Neoplasias Uterinas/metabolismo , Versicanos/farmacología
5.
Food Chem Toxicol ; 114: 128-140, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29458159

RESUMEN

A protracted pro-inflammatory state is the common denominator in the development, progression and complication of the common chronic diseases. Dietary antioxidants represent an efficient tool to counteract this inflammatory state. The aim of the present work was to evaluate the effects of strawberry extracts on inflammation evoked by E. Coli lipopolysaccharide in Human Dermal Fibroblast, by measuring reactive oxygen species production, apoptosis rate, antioxidant enzymes activity, mitochondria functionality and also investigating the molecular pathway involved in inflammatory and antioxidant response. The results demonstrated that strawberry pre-treatment reduced intracellular reactive oxygen species levels, apoptotic rate, improved antioxidant defences and mitochondria functionality in lipopolysaccharide -treated cells. Strawberry exerted these protective activities through the inhibition of the NF-kB signalling pathway and the stimulation of the Nrf2 pathway, with a mechanism AMPK-dependent. These results confirm the health benefits of strawberry in the prevention of inflammation and oxidative stress condition in lipopolysaccharide-treated cells.


Asunto(s)
Fibroblastos/efectos de los fármacos , Fragaria/química , Inflamación/metabolismo , Estrés Oxidativo/efectos de los fármacos , Extractos Vegetales/farmacología , Quinasas de la Proteína-Quinasa Activada por el AMP , Apoptosis/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Fibroblastos/citología , Fibroblastos/metabolismo , Frutas/química , Humanos , Inflamación/etiología , Inflamación/genética , Inflamación/fisiopatología , Lipopolisacáridos/efectos adversos , Mitocondrias/efectos de los fármacos , Mitocondrias/metabolismo , Factor 2 Relacionado con NF-E2/genética , Factor 2 Relacionado con NF-E2/metabolismo , Proteínas Quinasas/genética , Proteínas Quinasas/metabolismo , Especies Reactivas de Oxígeno/metabolismo , Piel/citología , Piel/efectos de los fármacos , Piel/metabolismo
6.
Nutrients ; 9(6)2017 Jun 14.
Artículo en Inglés | MEDLINE | ID: mdl-28613256

RESUMEN

Extreme exposure of skin to Ultraviolet A (UVA)-radiation may induce a dysregulated production of reactive oxygen species (ROS) which can interact with cellular biomolecules leading to oxidative stress, inflammation, DNA damage, and alteration of cellular molecular pathways, responsible for skin photoaging, hyperplasia, erythema, and cancer. For these reasons, the use of dietary natural bioactive compounds with remarkable antioxidant activity could be a strategic tool to counteract these UVA-radiation-caused deleterious effects. Thus, the purpose of the present work was to test the efficacy of strawberry (50 µg/mL)-based formulations supplemented with Coenzyme Q10 (100 µg/mL) and sun protection factor 10 in human dermal fibroblasts irradiated with UVA-radiation. The apoptosis rate, the amount of intracellular reactive oxygen species (ROS) production, the expression of proteins involved in antioxidant and inflammatory response, and mitochondrial functionality were evaluated. The results showed that the synergic topical use of strawberry and Coenzyme Q10 provided a significant (p < 0.05) photoprotective effect, reducing cell death and ROS, increasing antioxidant defense, lowering inflammatory markers, and improving mitochondrial functionality. The obtained results suggest the use of strawberry-based formulations as an innovative, natural, and useful tool for the prevention of UVA exposure-induced skin diseases in order to decrease or substitute the amount of synthetic sunscreen agents.


Asunto(s)
Cosméticos/farmacología , Fibroblastos/efectos de los fármacos , Fibroblastos/efectos de la radiación , Fragaria/química , Rayos Ultravioleta/efectos adversos , Apoptosis , Células Cultivadas , Cosméticos/administración & dosificación , Cosméticos/química , Daño del ADN/efectos de los fármacos , Daño del ADN/efectos de la radiación , Humanos , Ubiquinona/análogos & derivados , Ubiquinona/farmacología
7.
Nutrients ; 9(6)2017 Jun 16.
Artículo en Inglés | MEDLINE | ID: mdl-28621732

RESUMEN

Regulation of lipid metabolism is essential for treatment and prevention of several chronic diseases such as obesity, diabetes, and cardiovascular diseases, which are responsible for most deaths worldwide. It has been demonstrated that the AMP-activated protein kinase (AMPK) has a direct impact on lipid metabolism by modulating several downstream-signaling components. The main objective of the present work was to evaluate the in vitro effect of a methanolic strawberry extract on AMPK and its possible repercussion on lipid metabolism in human hepatocellular carcinoma cells (HepG2). For such purpose, the lipid profile and the expression of proteins metabolically related to AMPK were determined on cells lysates. The results demonstrated that strawberry methanolic extract decreased total cholesterol, low-density lipoprotein (LDL)-cholesterol, and triglycerides levels (up to 0.50-, 0.30-, and 0.40-fold, respectively) while it stimulated the p-AMPK/AMPK expression (up to 3.06-fold), compared to the control. AMPK stimulation led to the phosphorylation and consequent inactivation of acetyl coenzyme A carboxylase (ACC) and inhibition of 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR), the major regulators of fatty acids and cholesterol synthesis, respectively. Strawberry treatment also entailed a 4.34-, 2.37-, and 2.47-fold overexpression of LDL receptor, sirtuin 1 (Sirt1), and the peroxisome proliferator activated receptor gamma coactivator 1-alpha (PGC-1α), respectively, compared to control. The observed results were counteracted by treatment with compound C, an AMPK pharmacological inhibitor, confirming that multiple effects of strawberries on lipid metabolism are mediated by the activation of this protein.


Asunto(s)
Proteínas Quinasas Activadas por AMP/metabolismo , Fragaria/química , Regulación Enzimológica de la Expresión Génica/efectos de los fármacos , Metabolismo de los Lípidos/efectos de los fármacos , Extractos Vegetales/farmacología , Proteínas Quinasas Activadas por AMP/genética , Antocianinas/química , Ácido Ascórbico/química , Supervivencia Celular/efectos de los fármacos , Relación Dosis-Respuesta a Droga , Frutas/química , Células Hep G2 , Humanos , Concentración 50 Inhibidora , Extractos Vegetales/química
8.
Ann N Y Acad Sci ; 1398(1): 62-71, 2017 06.
Artículo en Inglés | MEDLINE | ID: mdl-28618011

RESUMEN

It is generally accepted that a fruit and vegetable-enriched diet is favorable for human health. The consumption of strawberries, in particular, has been related to the maintenance of well-being and the prevention of several chronic diseases, owing to the high contents of antioxidants and phytochemicals present in the fruit. Several biological effects have been explained through the total antioxidant capacity exerted by these bioactive compounds, but recently more intricate mechanisms have begun to be examined. In this context, it has been reported that strawberry phenolics are able to exert anti-inflammatory, anticarcinogenic, antiproliferative, and antiatherosclerotic activities, acting on specific molecular pathways related to antioxidant defenses, metabolism, survival, and proliferation. The overall aim of this work is to discuss and update the cellular and molecular mechanisms recently proposed to clarify the effects of strawberry phenolics on human health, with particular attention to the most common chronic diseases, such as metabolic syndrome, cardiovascular disease, and cancer.


Asunto(s)
Antiinflamatorios/uso terapéutico , Antioxidantes/uso terapéutico , Fragaria/química , Fenoles/uso terapéutico , Antiinflamatorios/química , Antioxidantes/química , Enfermedades Cardiovasculares/dietoterapia , Enfermedad Crónica/tratamiento farmacológico , Frutas/química , Humanos , Síndrome Metabólico/dietoterapia , Neoplasias/dietoterapia , Fenoles/química
9.
Int J Mol Sci ; 18(6)2017 May 28.
Artículo en Inglés | MEDLINE | ID: mdl-28555032

RESUMEN

Dyslipidemia and oxidation of low density lipoproteins (LDL) are recognized as critical factors in the development of atherosclerosis. Healthy dietary patterns, with abundant fruit and vegetable consumption, may prevent the onset of these risk factors due to the presence of phytochemical compounds. Strawberries are known for their high content of polyphenols; among them, flavonoids are the major constituents, and it is presumed that they are responsible for the biological activity of the fruit. Nevertheless, there are only a few studies that actually evaluate the effects of different fractions isolated from strawberries. In order to assess the effects of two different strawberry extracts (whole methanolic extract/anthocyanin-enriched fraction) on the lipid profile and antioxidant status in human hepatocellular carcinoma (HepG2) cells, the triglycerides and LDL-cholesterol content, lipid peroxidation, intracellular reactive oxygen species (ROS) content and antioxidant enzymes' activity on cell lysates were determined. Results demonstrated that both strawberry extracts not only improved the lipid metabolism by decreasing triglycerides and LDL-cholesterol contents, but also improved the redox state of HepG2 cells by modulating thiobarbituric acid-reactive substances production, antioxidant enzyme activity and ROS generation. The observed effects were more pronounced for the anthocyanin-enriched fraction.


Asunto(s)
Antocianinas/química , Fragaria/química , Metanol/química , Extractos Vegetales/farmacología , Antioxidantes/metabolismo , Células Hep G2 , Humanos , Peroxidación de Lípido/efectos de los fármacos , Extractos Vegetales/química , Especies Reactivas de Oxígeno/metabolismo
10.
Oncotarget ; 8(14): 23575-23587, 2017 Apr 04.
Artículo en Inglés | MEDLINE | ID: mdl-28212568

RESUMEN

Uterine leiomyomas are highly prevalent benign tumors in reproductive aged women. Unfortunately, medical treatments are still limited and no preventive therapies have been developed. In the present study, we investigated the therapeutic effects of strawberry extract on uterine leiomyoma cells. Leiomyoma and myometrial cells were treated with strawberry (cultivar Alba) extract (250 µg/ml) for 48 h to measure apoptosis, reactive oxygen species (ROS), oxidative phosphorylation (OCR, oxygen consumption rate) and glycolysis (ECAR, extracellular acidification rate) as well as fibrosis associated gene and/or protein expression. In leiomyoma cells, strawberry increased the percentage of apoptotic and dead cells. Strawberry significantly increased ROS concentration in leiomyoma cells, while decreased it in myometrial cells. After strawberry treatment, leiomyoma cells showed a significant decreased rate of ECAR, while OCR was unchanged in both myometrial and leiomyoma cells. Strawberry significantly decreased collagen1A1, fibronectin and versican mRNA expression in leiomyoma cells. The reduced protein expression of fibronectin was observed by strawberry extract in leiomyoma cells as well. Furthermore, strawberry was able to reduce activin A induced fibronectin, collagen1A1, and versican as well as activin A and PAI-1 mRNA expression in leiomyoma cells. This study suggests that strawberry can be developed as therapeutic and/or preventive agent for uterine leiomyomas.


Asunto(s)
Antocianinas/farmacología , Apoptosis/efectos de los fármacos , Fragaria/química , Glucólisis/efectos de los fármacos , Especies Reactivas de Oxígeno/metabolismo , Activinas/genética , Activinas/metabolismo , Western Blotting , Supervivencia Celular/efectos de los fármacos , Colágeno Tipo I/genética , Colágeno Tipo I/metabolismo , Cadena alfa 1 del Colágeno Tipo I , Femenino , Fibrosis , Regulación Neoplásica de la Expresión Génica/efectos de los fármacos , Humanos , Leiomioma/genética , Leiomioma/metabolismo , Leiomioma/patología , Fosforilación Oxidativa/efectos de los fármacos , Consumo de Oxígeno/efectos de los fármacos , Extractos Vegetales/farmacología , Inhibidor 1 de Activador Plasminogénico/genética , Inhibidor 1 de Activador Plasminogénico/metabolismo , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Células Tumorales Cultivadas , Neoplasias Uterinas/genética , Neoplasias Uterinas/metabolismo , Neoplasias Uterinas/patología , Versicanos/genética , Versicanos/metabolismo
11.
Food Chem Toxicol ; 102: 1-10, 2017 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-28130090

RESUMEN

A common denominator in the pathogenesis of most chronic inflammatory diseases is the involvement of oxidative stress, related to ROS production by all aerobic organisms. Dietary antioxidants from plant foods represent an efficient strategy to counteract this condition. The aim of the present study was to evaluate the protective effects of strawberry extracts on inflammatory status induced by E. Coli LPS on RAW 264.7 macrophages by measuring the main oxidative and inflammatory biomarkers and investigating the molecular pathways involved. Strawberry pre-treatment efficiently counteracted LPS-induced oxidative stress reducing the amount of ROS and nitrite production, stimulating endogenous antioxidant enzyme activities and enhancing protection against lipid, protein and DNA damage (P < 0.05). Strawberry pre-treatment exerted these protective effects primarily through the activation of the Nrf2 pathway, which is markedly AMPK-dependent and also by the modulation of the NF-kB signalling pathway. Finally, an improvement in mitochondria functionality was also detected. The results obtained in this work highlight the health benefit of strawberries against inflammatory and oxidative stress in LPS-stimulated RAW 264.7 macrophages, investigating for the first time the possible involved molecular mechanisms.


Asunto(s)
Antiinflamatorios no Esteroideos/farmacología , Fragaria/química , Lipopolisacáridos/farmacología , Macrófagos/efectos de los fármacos , Extractos Vegetales/farmacología , Animales , Antioxidantes/metabolismo , Línea Celular , Citocinas/metabolismo , Macrófagos/metabolismo , Redes y Vías Metabólicas/efectos de los fármacos , Ratones , Mitocondrias/efectos de los fármacos , Mitocondrias/metabolismo , Nitritos/metabolismo , Estrés Oxidativo/efectos de los fármacos , Extractos Vegetales/química , Especies Reactivas de Oxígeno/metabolismo
12.
Molecules ; 22(1)2017 Jan 21.
Artículo en Inglés | MEDLINE | ID: mdl-28117711

RESUMEN

A protracted pro-inflammatory state is a major contributing factor in the development, progression and complication of the most common chronic pathologies. Fruit and vegetables represent the main sources of dietary antioxidants and their consumption can be considered an efficient tool to counteract inflammatory states. In this context an evaluation of the protective effects of strawberry extracts on inflammatory stress induced by E. coli LPS on human dermal fibroblast cells was performed in terms of viability assays, ROS and nitrite production and biomarkers of oxidative damage of the main biological macromolecules. The results demonstrated that strawberry extracts exerted an anti-inflammatory effect on LPS-treated cells, through an increase in cell viability, and the reduction of ROS and nitrite levels, and lipid, protein and DNA damage. This work showed for the first time the potential health benefits of strawberry extract against inflammatory and oxidative stress in LPS-treated human dermal fibroblast cells.


Asunto(s)
Antiinflamatorios/farmacología , Fibroblastos/citología , Fragaria/química , Estrés Oxidativo/efectos de los fármacos , Extractos Vegetales/farmacología , Línea Celular , Supervivencia Celular , Daño del ADN/efectos de los fármacos , Escherichia coli/metabolismo , Fibroblastos/efectos de los fármacos , Fibroblastos/metabolismo , Humanos , Lipopolisacáridos/efectos adversos , Polisacáridos Bacterianos/efectos adversos
13.
Sci Rep ; 6: 30917, 2016 08 08.
Artículo en Inglés | MEDLINE | ID: mdl-27498973

RESUMEN

We describe the biological effects of a polyphenol-rich strawberry extract (PRSE), obtained from the "Alba" variety, on the highly aggressive and invasive basal-like breast cancer cell line A17. Dose-response and time-course experiments showed that PRSE is able to decrease the cellular viability of A17 cells in a time- and dose-dependent manner. PRSE effect on cell survival was investigated in other tumor and normal cell lines of both mouse and human origin, demonstrating that PRSE is more active against breast cancer cells. Cytofluorimetric analysis of A17 cells demonstrated that sub-lethal doses of PRSE reduce the number of cells in S phase, inducing the accumulation of cells in G1 phase of cell cycle. In addition, the migration of A17 cells was studied monitoring the ability of PRSE to inhibit cellular mobility. Gene expression analysis revealed the modulation of 12 genes playing different roles in the cellular migration, adhesion and invasion processes. Finally, in vivo experiments showed the growth inhibition of A17 cells orthotopically transplanted into FVB syngeneic mice fed with PRSE. Overall, we demonstrated that PRSE exerts important biological activities against a highly invasive breast cancer cell line both in vitro and in vivo suggesting the strawberry extracts as preventive/curative food strategy.


Asunto(s)
Antineoplásicos/farmacología , Fragaria/química , Extractos Vegetales/farmacología , Polifenoles/farmacología , Administración Oral , Animales , Antineoplásicos/administración & dosificación , Antineoplásicos/aislamiento & purificación , Neoplasias de la Mama/tratamiento farmacológico , Adhesión Celular/efectos de los fármacos , Ciclo Celular/efectos de los fármacos , Línea Celular Tumoral , Movimiento Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Modelos Animales de Enfermedad , Perfilación de la Expresión Génica , Xenoinjertos , Humanos , Ratones , Trasplante de Neoplasias , Extractos Vegetales/administración & dosificación , Extractos Vegetales/aislamiento & purificación , Polifenoles/administración & dosificación , Polifenoles/aislamiento & purificación , Resultado del Tratamiento
14.
Int J Mol Sci ; 17(7)2016 Jul 11.
Artículo en Inglés | MEDLINE | ID: mdl-27409612

RESUMEN

Strawberries are highly appreciated for their taste, nutritional value and antioxidant compounds, mainly phenolics. Fruit antioxidants derive from achenes and flesh, but achene contribution to the total fruit antioxidant capacity and to the bioaccessibility after intake is still unknown. In this work, the content of total phenolic compounds, flavonoids, anthocyanins and antioxidant capacity (TEAC, FRAP and DPPH) of achenes and flesh were compared in non-digested as well as in gastric and intestinal extracts after in vitro digestion. Results showed that, despite strawberry achenes represent a small fraction of the fruit, their contribution to total fruit antioxidant content was more than 41% and accounted for 81% of antioxidant capacity (TEAC). Achenes have higher quantity and different quality of antioxidants in non-digested and digested extracts. Antioxidant release was higher in the in vitro gastric digested extracts, but digestion conditions did not only affect quantity but quality, resulting in differences in antioxidant capacity and highlighting the importance of simulating physiological-like extraction conditions for assessing fruit antioxidant properties on human health. These results give new insights into the use of strawberry achenes as a source of bioactive compounds to be considered in strawberry breeding programs for improving human health.


Asunto(s)
Fragaria/química , Extractos Vegetales/química , Antocianinas/análisis , Antioxidantes/análisis , Antioxidantes/química , Cromatografía Líquida de Alta Presión , Flavonoides/análisis , Fragaria/metabolismo , Frutas/química , Frutas/metabolismo , Humanos , Fenoles/análisis
15.
Molecules ; 21(2): 169, 2016 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-26840292

RESUMEN

Colon cancer is one of the most prevalent diseases across the world. Numerous epidemiological studies indicate that diets rich in fruit, such as berries, provide significant health benefits against several types of cancer, including colon cancer. The anticancer activities of berries are attributed to their high content of phytochemicals and to their relevant antioxidant properties. In vitro and in vivo studies have demonstrated that berries and their bioactive components exert therapeutic and preventive effects against colon cancer by the suppression of inflammation, oxidative stress, proliferation and angiogenesis, through the modulation of multiple signaling pathways such as NF-κB, Wnt/ß-catenin, PI3K/AKT/PKB/mTOR, and ERK/MAPK. Based on the exciting outcomes of preclinical studies, a few berries have advanced to the clinical phase. A limited number of human studies have shown that consumption of berries can prevent colorectal cancer, especially in patients at high risk (familial adenopolyposis or aberrant crypt foci, and inflammatory bowel diseases). In this review, we aim to highlight the findings of berries and their bioactive compounds in colon cancer from in vitro and in vivo studies, both on animals and humans. Thus, this review could be a useful step towards the next phase of berry research in colon cancer.


Asunto(s)
Neoplasias del Colon/tratamiento farmacológico , Neoplasias del Colon/prevención & control , Frutas/química , Extractos Vegetales/farmacología , Animales , Antineoplásicos/farmacología , Antineoplásicos/uso terapéutico , Antioxidantes/farmacología , Antioxidantes/uso terapéutico , Línea Celular Tumoral , Ensayos Clínicos como Asunto , Humanos , Fitoterapia , Extractos Vegetales/uso terapéutico , Transducción de Señal/efectos de los fármacos
16.
J Sci Food Agric ; 96(2): 365-71, 2016 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-25872898

RESUMEN

Berries are a relevant source of micronutrients and nonessential phytochemicals, such as polyphenol compounds, that play a synergistic and cumulative role in human health promotion. Several systematic analyses showed that berry phenolics are able to detoxify reactive oxygen and nitrogen species, blocking their production, to intervene in the cell cycle, participating in the transduction and expression of genes involved in apoptosis, and to repair oxidative DNA damage. As a consequence, the improvement of the nutritional quality of berries has become a new quality target of breeding and biotechnological strategies, to control or to increase the content of specific health-related compounds in fruits. This work reviews, on the basis of the in vitro and in vivo evidence, the main berries' phytochemical compounds and their possible mechanisms of action on pathways involved in several type of diseases, with particular attention to cancer, inflammation, neurodegeneration, diabetes and cardiovascular diseases.


Asunto(s)
Antioxidantes/farmacología , Frutas/química , Polifenoles/farmacología , Antioxidantes/química , Disponibilidad Biológica , Humanos , Valor Nutritivo , Fitoterapia , Polifenoles/química
17.
Int J Mol Sci ; 16(8): 17870-84, 2015 Aug 04.
Artículo en Inglés | MEDLINE | ID: mdl-26247940

RESUMEN

Strawberry polyphenols have been extensively studied over the last two decades for their beneficial properties. Recently, their possible use in ameliorating skin conditions has also been proposed; however, their role in preventing UVA-induced damage in cosmetic formulation has not yet been investigated. Skin is constantly exposed to several environmental stressors, such as UVA radiation, that induce oxidative stress, inflammation and cell death via the production of reactive oxygen species (ROS). In the present study, we assessed the potential photoprotective capacity of different strawberry-based formulations, enriched with nanoparticles of Coenzyme Q10 and with sun protection factor 10 (SPF10), in human dermal fibroblasts (HuDe) exposed to UVA radiation. We confirmed that strawberries are a very rich source of polyphenols, anthocyanins and vitamins, and possess high total antioxidant capacity. We also showed that strawberry extracts (25 µg/mL-1 mg/mL) exert a noticeable photoprotection in HuDe, increasing cell viability in a dose-dependent way, and that these effects are potentiated by the presence of CoQ10red (100 µg/mL). We have demonstrated for the first time that the topical use of strawberry extract may provide good photoprotection, even if more in-depth studies are strongly encouraged in order to evaluate the cellular and molecular effects of strawberry protection.


Asunto(s)
Antioxidantes/farmacología , Fibroblastos/efectos de los fármacos , Fragaria/química , Extractos Vegetales/farmacología , Protectores Solares/farmacología , Antioxidantes/química , Células Cultivadas , Fibroblastos/efectos de la radiación , Humanos , Extractos Vegetales/química , Protectores Solares/química , Rayos Ultravioleta/efectos adversos
18.
Molecules ; 19(6): 7798-816, 2014 Jun 11.
Artículo en Inglés | MEDLINE | ID: mdl-24962387

RESUMEN

Strawberry bioactive compounds are widely known to be powerful antioxidants. In this study, the antioxidant and anti-aging activities of a polyphenol-rich strawberry extract were evaluated using human dermal fibroblasts exposed to H2O2. Firstly, the phenol and flavonoid contents of strawberry extract were studied, as well as the antioxidant capacity. HPLC-DAD analysis was performed to determine the vitamin C and ß-carotene concentration, while HPLC-DAD/ESI-MS analysis was used for anthocyanin identification. Strawberry extract presented a high antioxidant capacity, and a relevant concentration of vitamins and phenolics. Pelargonidin- and cyanidin-glycosides were the most representative anthocyanin components of the fruits. Fibroblasts incubated with strawberry extract and stressed with H2O2 showed an increase in cell viability, a smaller intracellular amount of ROS, and a reduction of membrane lipid peroxidation and DNA damage. Strawberry extract was also able to improve mitochondrial functionality, increasing the basal respiration of mitochondria and to promote a regenerative capacity of cells after exposure to pro-oxidant stimuli. These findings confirm that strawberries possess antioxidant properties and provide new insights into the beneficial role of strawberry bioactive compounds on protecting skin from oxidative stress and aging.


Asunto(s)
Dermis/efectos de los fármacos , Fibroblastos/efectos de los fármacos , Fragaria/metabolismo , Peróxido de Hidrógeno/efectos adversos , Mitocondrias/metabolismo , Antocianinas/análisis , Antioxidantes/farmacología , Ácido Ascórbico/análisis , Línea Celular , Proliferación Celular/efectos de los fármacos , Supervivencia Celular/efectos de los fármacos , Daño del ADN/efectos de los fármacos , Dermis/citología , Fibroblastos/citología , Flavonoides/análisis , Humanos , Peróxido de Hidrógeno/farmacología , Peroxidación de Lípido/efectos de los fármacos , Oligomicinas/farmacología , Consumo de Oxígeno/efectos de los fármacos , Fenol/análisis , Extractos Vegetales/farmacología , beta Caroteno/análisis
19.
Food Funct ; 5(8): 1939-48, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24956972

RESUMEN

This study investigates the protective effect of the Sveva strawberry polyphenol-rich extract on human dermal fibroblasts against AAPH-induced oxidative stress. The HPLC-DAD/ESI-MS analysis was used for evaluating the phenolic composition of the fruits. Sveva strawberry presented a high anthocyanin content (639.79 mg per kg fresh fruit), representing ∼86.08% of the total phenolic content, with Pg-3-glc as the most abundant representative (611.18 mg per kg fresh fruit). Only one ellagitannin (agrimoniin) was identified, while two quercetins, three kaempherol derivates, and three ellagic acid derivatives were detected and quantified. Strawberry pre-treatment (0.5 mg ml(-1)) markedly increased human dermal fibroblast viability, with a significant reduction of apoptotic and dead cells, and suppressed AAPH-induced ROS generation, after only 30 minutes of incubation with the oxidizing agent, and lipid peroxidation, against a range of AAPH concentrations tested. Notably, the strawberry extract also improved the mitochondrial functionality: the basal respiratory performance after treatment was ∼1.59-fold higher compared to control cells, while pre-treatment with strawberry extract before oxidative damage increased ∼2.70-fold compared to stressed cells. Our results confirm that the strawberry possesses antioxidant properties, and may be useful for the prevention of free radical-induced skin damage.


Asunto(s)
Antocianinas/farmacología , Fibroblastos/efectos de los fármacos , Fragaria/química , Mitocondrias/efectos de los fármacos , Estrés Oxidativo/efectos de los fármacos , Extractos Vegetales/farmacología , Antioxidantes/farmacología , Línea Celular , Ácido Elágico/análisis , Ácido Elágico/farmacología , Fibroblastos/citología , Frutas/química , Humanos , Taninos Hidrolizables/análisis , Taninos Hidrolizables/farmacología , Oxidantes/efectos adversos , Polifenoles/farmacología , Sustancias Protectoras/farmacología , Quercetina/análisis , Quercetina/farmacología , Especies Reactivas de Oxígeno/metabolismo , Piel/citología , Piel/efectos de los fármacos , Piel/metabolismo , beta Caroteno/análisis , beta Caroteno/farmacología
20.
J Agric Food Chem ; 62(18): 3935-43, 2014 May 07.
Artículo en Inglés | MEDLINE | ID: mdl-24580025

RESUMEN

This study investigated the effects of two different strawberry cultivars, Adria and Sveva, against doxorubicin (DOX)-induced toxicity in rats. A controlled dietary intervention was conducted over 16 weeks with four groups: (i) normal diet; (ii) normal diet + DOX injection; (iii) Adria supplementation + DOX injection; and (iv) Sveva supplementation + DOX injection. Sveva presented higher total antioxidant capacity value and phenol and and vitamin C levels than Adria, which in turn presented higher anthocyanin contents. DOX drastically increased lymphocyte DNA damage, liver biomarkers of protein and lipid oxidation, and mitochondrial ROS content and markedly decreased plasma retinol level, liver antioxidant enzymes, and mitochondrial functionality. After 2 months of strawberry supplementation, rats presented a significant reduction of DNA damage and ROS concentration and a significant improvement of oxidative stress biomarkers, antioxidant enzyme activities, and mitochondrial performance. These results suggest that strawberry supplementation can counteract DOX toxicity, confirming the potential health benefit of strawberry in vivo against oxidative stress.


Asunto(s)
Antocianinas/metabolismo , Enfermedad Hepática Inducida por Sustancias y Drogas/dietoterapia , Doxorrubicina/toxicidad , Fragaria/metabolismo , Estrés Oxidativo , Animales , Enfermedad Hepática Inducida por Sustancias y Drogas/etiología , Enfermedad Hepática Inducida por Sustancias y Drogas/genética , Enfermedad Hepática Inducida por Sustancias y Drogas/metabolismo , Daño del ADN/efectos de los fármacos , Humanos , Hígado/efectos de los fármacos , Hígado/enzimología , Hígado/metabolismo , Masculino , Mitocondrias/efectos de los fármacos , Mitocondrias/metabolismo , Estrés Oxidativo/efectos de los fármacos , Ratas , Ratas Wistar
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