Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 49
Filtrar
Más filtros

Banco de datos
País/Región como asunto
Tipo del documento
País de afiliación
Intervalo de año de publicación
1.
Nutr Health ; : 2601060231209555, 2024 Jan 27.
Artículo en Inglés | MEDLINE | ID: mdl-38280233

RESUMEN

Background: The energy balance between inputs and outputs is essential to avoid a reduction in performance, recovery difficulties, hormonal problems, an increased risk of fatigue, injuries and illnesses. Aim: The purpose of the study is to evaluate whether the energy intake assumed by non-professional sportsmen of the new fitness disciplines on the basis of the guidelines present in the literature, meets the needs required by their sporting activity. Methods: The sample consist of 20 non-competitive adult sportsmen (n.10 females; n.10 males) that were voluntarily enrolled in a gym, belonging to the various fitness disciplines: bodybuilders (n = 2); calisthenics (n = 3); crossfitters (n = 15). The subjects underwent an anamnestic-nutritional interview and used a photographic atlas to estimate the energy intake in the training day (in terms of macronutrients, micronutrients and H2O). Results: The results of the study reported: a lower energy intake, the breakdown of macronutrients was suitable for the nutritional indications reported by bibliographic sources, with the exception for protein intake that was higher than the other macronutrients; a lower intake of fibers, mono/polyunsaturated fatty acids; an higher intake of simple sugars, proteins and H2O, and by a normal parameters of carbohydrates, fats and saturated fatty acids. Conclusions: Generally the study has shown that the sample energy intake is extremely low in the training day. Therefore, it is useful to educate sportsmen, coaches and families in order to avoid deficiencies/excess of calories and nutrients which may not be functional for the sporting activity performed.

2.
Int J Mol Sci ; 24(3)2023 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-36768382

RESUMEN

Cholesterol accumulation in macrophages leads to the formation of foam cells and increases the risk of developing atherosclerosis. We have verified whether hydroxytyrosol (HT), a phenolic compound with anti-inflammatory and antioxidant properties, can reduce the cholesterol build up in THP-1 macrophage-derived foam cells. We have also investigated the potential mechanisms. Oil Red O staining and high-performance liquid chromatography (HPLC) assays were utilized to detect cellular lipid accumulation and cholesterol content, respectively, in THP-1 macrophages foam cells treated with HT. The impact of HT on cholesterol metabolism-related molecules (SR-A1, CD36, LOX-1, ABCA1, ABCG1, PPARγ and LRX-α) in foam cells was assessed using real-time PCR (RT-qPCR) and Western blot analyses. Finally, the effect of HT on the adhesion of THP-1 monocytes to human vascular endothelial cells (HUVEC) was analyzed to study endothelial activation. We found that HT activates the PPARγ/LXRα pathway to upregulate ABCA1 expression, reducing cholesterol accumulation in foam cells. Moreover, HT significantly inhibited monocyte adhesion and reduced the levels of adhesion factors (ICAM-1 and VCAM-1) and pro-inflammatory factors (IL-6 and TNF-α) in LPS-induced endothelial cells. Taken together, our findings suggest that HT, with its ability to interfere with the import and export of cholesterol, could represent a new therapeutic strategy for the treatment of atherosclerotic disease.


Asunto(s)
Células Espumosas , PPAR gamma , Humanos , Células Espumosas/metabolismo , PPAR gamma/metabolismo , Células Endoteliales/metabolismo , Colesterol/metabolismo , Inflamación/tratamiento farmacológico , Inflamación/metabolismo , Transportador 1 de Casete de Unión a ATP/genética , Transportador 1 de Casete de Unión a ATP/metabolismo , Receptores X del Hígado/metabolismo
3.
Int J Mol Sci ; 23(24)2022 Dec 19.
Artículo en Inglés | MEDLINE | ID: mdl-36555859

RESUMEN

Living organisms do not disregard the laws of thermodynamics and must therefore consume energy for their survival. In this way, cellular energy exchanges, which aim above all at the production of ATP, a fundamental molecule used by the cell for its metabolisms, favor the formation of waste products that, if not properly disposed of, can contribute to cellular aging and damage. Numerous genes have been linked to aging, with some favoring it (gerontogenes) and others blocking it (longevity pathways). Animal model studies have shown that calorie restriction (CR) may promote longevity pathways, but given the difficult application of CR in humans, research is investigating the use of CR-mimetic substances capable of producing the same effect. These include some phytonutrients such as oleuropein, hydroxytyrosol, epigallo-catechin-gallate, fisetin, quercetin, and curcumin and minerals such as magnesium and selenium. Some of them also have senolytic effects, which promote the apoptosis of defective cells that accumulate over the years (senescent cells) and disrupt normal metabolism. In this article, we review the properties of these natural elements that can promote a longer and healthier life.


Asunto(s)
Productos Biológicos , Senoterapéuticos , Humanos , Animales , Productos Biológicos/farmacología , Envejecimiento , Senescencia Celular , Quercetina/farmacología
4.
J Am Coll Nutr ; 39(2): 178-186, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31393225

RESUMEN

Background: The amount of healthy subjects adopting a gluten-free diet (GFD) for nonmedical reasons actually surpasses the numbers of those who are dealing with a permanent gluten-related disorder.Objective: The study aimed to better clarify the interactions between a GFD and physical and psychological well-being.Methods: Sixty healthy subjects with normal weight were enrolled. Thirty subjects (15 female) were submitted to a normocaloric GFD and considered as the experimental group (EG), and 30 subjects (15 female) were submitted to a normocaloric diet (CG) for 6 months. The hematochemical and psychological parameters before and after the diet were recorded.Results: Significant improvement was demonstrated in red blood count, hemoglobin, total cholesterol, and high-density lipoprotein parameters in the EG after the gluten-free diet. However, a significant increase of α-amylase pancreatic activity and reduction of vitamin B12 and magnesium levels in the EG were observed. Regarding the psychological parameters, the GFD significantly improved scores assessing body satisfaction, but increased social insecurity.Conclusions: The study is the first to consider significant modulation in hematochemical parameters as well as psychological ones by gluten avoidance in healthy individuals. Although these subjects were not characterized by intestinal mucosa damage, some of the effects were similar to those observed in celiac disease patients who began to adhere to a GFD.


Asunto(s)
Dieta Sin Gluten/estadística & datos numéricos , Estado de Salud , Adulto , Afecto , Recuento de Células Sanguíneas , Presión Sanguínea , Imagen Corporal/psicología , Enfermedad Celíaca/dietoterapia , Dieta , Dieta Sin Gluten/psicología , Ingestión de Energía , Femenino , Voluntarios Sanos , Humanos , Italia , Lípidos/sangre , Masculino , Persona de Mediana Edad , Satisfacción del Paciente , Encuestas y Cuestionarios
5.
Int J Mol Sci ; 20(13)2019 Jul 02.
Artículo en Inglés | MEDLINE | ID: mdl-31269760

RESUMEN

Chenopodium quinoa Wild is a "pseudocereal" grain which attracts a lot of attention in the scientific community as it has a positive effect on health. Here, we investigate the presence of biologically active O-prenylated phenylpropanoids in the ethanol extract of commercially available quinoa seeds. We claim that 4'-Geranyloxyferulic acid (GOFA) was the only phytochemical product found that belongs to quinoa's group secondary metabolites. We studied the changes in the oxidative and inflammatory status of the cellular environment in HCT 116 cell line processed with quinoa extract and its component GOFA; the implementation was done through the analysis of the antioxidant enzymes (SOD and CAT), the pro-inflammatory components (iNOS, IL-6 and TNF-α), and the products of intermediary metabolism (ONOO-, O2-). Moreover, the l-arginine uptake was proposed as a target of the tested compounds. We demonstrated that the GOFA, through a decrease of the CAT-2B expression, leads to a reduction of the l-arginine uptake, downregulating the harmful iNOS and restoring the altered redox state. These results propose a new molecular target involved in the reduction of the critical inflammatory process responsible for the cancer progression.


Asunto(s)
Anticarcinógenos/farmacología , Arginina/metabolismo , Transportador de Aminoácidos Catiônicos 2/metabolismo , Ácidos Cumáricos/farmacología , Óxido Nítrico/metabolismo , Anticarcinógenos/química , Chenopodium quinoa/química , Ácidos Cumáricos/química , Células HCT116 , Humanos , Inflamación/metabolismo , Inflamación/prevención & control , Neoplasias/metabolismo , Neoplasias/prevención & control , Estrés Oxidativo/efectos de los fármacos , Semillas/química
6.
J Cell Mol Med ; 22(5): 2750-2759, 2018 05.
Artículo en Inglés | MEDLINE | ID: mdl-29512923

RESUMEN

Gastroesophageal reflux disease (GERD), a clinical condition characterized by reflux of gastroduodenal contents in the oesophagus, has proved to demonstrate a strong link between oxidative stress and the development of GERD. Proton pump inhibitors (PPIs) have been universally accepted as first-line therapy for management of GERD. The potential benefits of electrolysed reduced water (ERW), rich in molecular hydrogen, in improving symptoms and systemic oxidative stress associated with GERD was assessed. The study was performed on 84 GERD patients undergoing control treatment (PPI + tap water) or experimental treatment (PPI + ERW) for 3 months. These patients were subjected to the GERD-Health Related Quality of Life Questionnaire as well as derivatives reactive oxigen metabolites (d-ROMs) test, biological antioxidant potential (BAP) test, superoxide anion, nitric oxide and malondialdehyde assays, which were all performed as a proxy for the oxidative/nitrosative stress and the antioxidant potential status. Spearman's correlation coefficient was used to evaluate the correlation between scores and laboratory parameters. Overall results demonstrated that an optimal oxidative balance can be restored and GERD symptoms can be reduced rapidly via the integration of ERW in GERD patients. The relative variation of heartburn and regurgitation score was significantly correlated with laboratory parameters. Thus, in the selected patients, combination treatment with PPI and ERW improves the cellular redox state leading to the improvement of the quality of life as demonstrated by the correlation analysis between laboratory parameters and GERD symptoms.


Asunto(s)
Reflujo Gastroesofágico/sangre , Reflujo Gastroesofágico/terapia , Hidrógeno/uso terapéutico , Agua/farmacología , Adulto , Anciano , Antioxidantes/metabolismo , Humanos , Persona de Mediana Edad , Oxidación-Reducción , Estrés Oxidativo/efectos de los fármacos , Inhibidores de la Bomba de Protones/uso terapéutico , Calidad de Vida , Adulto Joven
7.
Int J Mol Sci ; 18(4)2017 Mar 23.
Artículo en Inglés | MEDLINE | ID: mdl-28333102

RESUMEN

Polyphenols compounds are a group molecules present in many plants. They have antioxidant properties and can also be helpful in the management of sepsis. Licochalcone C (LicoC), a constituent of Glycyrrhiza glabra, has various biological and pharmacological properties. In saying this, the effect of LicoC on the inflammatory response that characterizes septic myocardial dysfunction is poorly understood. The aim of this study was to determine whether LicoC exhibits anti-inflammatory properties on H9c2 cells that are stimulated with lipopolysaccharide. Our results have shown that LicoC treatment represses nuclear factor-κB (NF-κB) translocation and several downstream molecules, such as inducible nitric oxide synthase (iNOS), intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1). Moreover, LicoC has upregulated the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/endothelial nitric oxide synthase (eNOS) signaling pathway. Finally, 2-(4-Morpholinyl)-8-phenyl-1(4H)-benzopyran-4-one hydrochloride (LY294002), a specific PI3K inhibitor, blocked the protective effects of LicoC. These findings indicate that LicoC plays a pivotal role in cardiac dysfunction in sepsis-induced inflammation.


Asunto(s)
Antiinflamatorios/farmacología , Chalconas/farmacología , Transducción de Señal/efectos de los fármacos , Animales , Línea Celular , Molécula 1 de Adhesión Intercelular/metabolismo , Lipopolisacáridos/toxicidad , FN-kappa B/metabolismo , Óxido Nítrico/metabolismo , Óxido Nítrico Sintasa de Tipo II/metabolismo , Óxido Nítrico Sintasa de Tipo III/metabolismo , Fosfatidilinositol 3-Quinasas/metabolismo , Inhibidores de las Quinasa Fosfoinosítidos-3 , Proteínas Proto-Oncogénicas c-akt/metabolismo , Ratas
8.
J Cell Physiol ; 231(11): 2439-51, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-26895796

RESUMEN

Several studies have shown that xanthones obtained from Garcinia Mangostana (GM) have remarkable biological activities. α-mangostin (α-MG) is the main constituent of the fruit hull of the GM. Several findings have suggested that SIRT-1, a nuclear histone deacetylase, could influence cellular function by the inhibition of NF-kB signaling. ROS can inhibit SIRT-1 activity by initiating oxidative modifications on its cysteine residues, and suppression of SIRT-1 enhances the NF-κB signaling resulting in inflammatory responses. The goals of the present study were to evaluate the quantity of α-MG in the methanolic extract of GM (Vithagroup Spa) and to investigate the activity of this xanthone in U937 cell line and in human monocytes from responsive to inflammatory insult analyzing the possible changes on the activation of SIRT-1 protein via NF-Kb. Cells were treated with the methanolic extract of GM and/or LPS. The chromatographic separation of α-MG was performed by an HPLC analysis. EX 527, a specific SIRT-1 inhibitor, was used to determine if SIRT-1/NfkB signaling pathway might be involved in α-MG action on cells. Our results show that α-MG inhibits p65 acetylation and down-regulates the pro-inflammatory gene products as COX-2, iNOS via SIRT-1 activation. Cells treated with EX 527 showed an up-regulation of NFkB acetylation and an over expression of inducible enzymes and their product of catalysis (NO and PGE2). These results suggest that α-MG may be useful for the development of alternative pharmacological strategies aimed at reducing the inflammatory process. J. Cell. Physiol. 231: 2439-2451, 2016. © 2016 Wiley Periodicals, Inc.


Asunto(s)
Inflamación/patología , Transducción de Señal/efectos de los fármacos , Sirtuina 1/metabolismo , Xantonas/farmacología , Acetilación/efectos de los fármacos , Muerte Celular/efectos de los fármacos , Citocinas/genética , Citocinas/metabolismo , Citoprotección/efectos de los fármacos , Depuradores de Radicales Libres/farmacología , Garcinia/química , Humanos , Lipopolisacáridos , Monocitos/efectos de los fármacos , Monocitos/metabolismo , FN-kappa B/metabolismo , Extractos Vegetales/farmacología , Superóxidos/metabolismo , Células U937 , Xantonas/química
9.
Int J Mol Sci ; 17(9)2016 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-27598129

RESUMEN

It is known that increased levels of reactive oxygen species (ROS) and reactive nitrogen species (RNS) can exert harmful effects, altering the cellular redox state. Electrolyzed Reduced Water (ERW) produced near the cathode during water electrolysis exhibits high pH, high concentration of dissolved hydrogen and an extremely negative redox potential. Several findings indicate that ERW had the ability of a scavenger free radical, which results from hydrogen molecules with a high reducing ability and may participate in the redox regulation of cellular function. We investigated the effect of ERW on H2O2-induced U937 damage by evaluating the modulation of redox cellular state. Western blotting and spectrophotometrical analysis showed that ERW inhibited oxidative stress by restoring the antioxidant capacity of superoxide dismutase, catalase and glutathione peroxidase. Consequently, ERW restores the ability of the glutathione reductase to supply the cell of an important endogenous antioxidant, such as GSH, reversing the inhibitory effect of H2O2 on redox balance of U937 cells. Therefore, this means a reduction of cytotoxicity induced by peroxynitrite via a downregulation of the NF-κB/iNOS pathway and could be used as an antioxidant for preventive and therapeutic application. In conclusion, ERW can protect the cellular redox balance, reducing the risk of several diseases with altered cellular homeostasis such as inflammation.


Asunto(s)
Antioxidantes/farmacología , FN-kappa B/metabolismo , Óxido Nítrico Sintasa de Tipo II/metabolismo , Agua/farmacología , Antioxidantes/química , Línea Celular Tumoral , Electrólisis/métodos , Humanos , Oxidación-Reducción , Estrés Oxidativo/efectos de los fármacos , Transducción de Señal/efectos de los fármacos , Investigación Biomédica Traslacional/métodos , Agua/química
10.
J Cell Mol Med ; 19(7): 1548-56, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25807993

RESUMEN

Polyphenols are the major components of many traditional herbal remedies, which exhibit several beneficial effects including anti-inflammation and antioxidant properties. Src homology region 2 domain-containing phosphatase-1 (SHP-1) is a redox sensitive protein tyrosine phosphatase that negatively influences downstream signalling molecules, such as mitogen-activated protein kinases, thereby inhibiting inflammatory signalling induced by lipopolysaccharide (LPS). Because a role of transforming growth factor ß-activated kinase-1 (TAK1) in the upstream regulation of JNK molecule has been well demonstrated, we conjectured that SHP-1 could mediate the anti-inflammatory effect of verbascoside through the regulation of TAK-1/JNK/AP-1 signalling in the U937 cell line. Our results demonstrate that verbascoside increased the phosphorylation of SHP-1, by attenuating the activation of TAK-1/JNK/AP-1 signalling. This leads to a reduction in the expression and activity of both COX and NOS. Moreover, SHP-1 depletion deletes verbascoside inhibitory effects on pro-inflammatory molecules induced by LPS. Our data confirm that SHP-1 plays a critical role in restoring the physiological mechanisms of inducible proteins such as COX2 and iNOS, and that the down-regulation of TAK-1/JNK/AP-1 signalling by targeting SHP-1 should be considered as a new therapeutic strategy for the treatment of inflammatory diseases.


Asunto(s)
Regulación hacia Abajo/efectos de los fármacos , Glucósidos/farmacología , Inflamación/enzimología , Inflamación/patología , Fenoles/farmacología , Proteína Tirosina Fosfatasa no Receptora Tipo 6/metabolismo , Muerte Celular/efectos de los fármacos , Núcleo Celular/efectos de los fármacos , Núcleo Celular/metabolismo , Ciclooxigenasa 2/metabolismo , Activación Enzimática/efectos de los fármacos , Silenciador del Gen/efectos de los fármacos , Glucósidos/química , Humanos , Proteínas Quinasas JNK Activadas por Mitógenos/metabolismo , Quinasas Quinasa Quinasa PAM/metabolismo , Datos de Secuencia Molecular , Óxido Nítrico Sintasa de Tipo II/metabolismo , Fenoles/química , Fosforilación/efectos de los fármacos , Transducción de Señal , Factor de Transcripción AP-1/metabolismo , Tirosina/metabolismo , Células U937
11.
Brain Behav Immun ; 46: 261-9, 2015 May.
Artículo en Inglés | MEDLINE | ID: mdl-25712259

RESUMEN

Several studies have focused on the relationship between hormonal changes and affective states in sporting contexts relating to an agonistic outcome. More recently, pro-inflammatory cytokines have also been successfully associated with affective state modulation. The aim of this study was to investigate whether athletes who won or lost show different levels of steroid hormones (testosterone and cortisol), pro-inflammatory cytokine IL-1ß, or expressions of anger and anxiety during six training fights in seasonal competitions down to the main seasonal competition. In 25 male kick-boxing athletes (age±SD, 28.68±5.34), anger states (RS score) and anxiety states (AS score) were assessed by STAXI-2 and STAI-Y, respectively. Cortisol (C), testosterone (T) and IL-1ß salivary levels were measured by the ELISA method. The saliva samples were taken in the afternoon, 30min prior to the start and 30min from the end of both simulated and official competitions. The results showed that the RS score, T, T/C ratio salivary levels increased during the season, whereas the AS score, C and IL-1ß suggested an opposite trend. Close to an official competition, the RS score, T, T/C ratio and IL-1ß salivary concentrations were significantly higher, and then decreased during competition. By contrast, the AS score and C levels significantly increased throughout the official competition. In addition, significant differences were found for hormones and IL-1ß concentrations as well as psychometric assessment close to the outcome of an official match. Athletes who lost showed an higher AS score and C level, while those who won were characterized by an higher level during the pre-competition RS score, T, T/C ratio, and IL-1ß. Note that these factors were positively and significantly correlated at the pre-official competition time, while in a linear regression analysis, IL-1ß, T and T/C ratio concentrations explained 43% of the variance in the RS score observed at the same time (adjusted R(2)=0.43, ANOVA P<.05). Our data suggest that the beginning of an agonistic event could trigger emotional responses which correspond to different biological processes instead that of a simulated fight. In particular, IL-1ß could be a potential new biological marker of anger and the combined measurement of these factors may be a useful way of understanding athletes' change in relation to their performance.


Asunto(s)
Ira/fisiología , Ansiedad/psicología , Atletas , Conducta Competitiva/fisiología , Hidrocortisona/análisis , Interleucina-1beta/análisis , Testosterona/análisis , Adulto , Afecto/fisiología , Ansiedad/fisiopatología , Humanos , Masculino , Saliva/química , Estaciones del Año , Deportes , Adulto Joven
12.
Mol Pharm ; 12(1): 66-74, 2015 Jan 05.
Artículo en Inglés | MEDLINE | ID: mdl-25375771

RESUMEN

A novel cyclic prodrug of S-allyl-glutathione (CP11), obtained by using an acyloxy-alkoxy linker, was estimated for its pharmacokinetic and biological properties. The stability of CP11 was evaluated at pH 1.2, 7.4, in simulated fluids with different concentrations of enzymes, and in human plasma. The anti-inflammatory ability of CP11 was assessed in U937 cells, an immortalized human monocyte cell line. Results showed that CP11 is stable at acidic pH showing a possible advantage for oral delivery due to the longer permanence in the stomach. Having a permeability coefficient of 2.49 × 10(-6) cm s(-1), it was classified as discrete BBB-permeable compound. Biological studies revealed that CP11 is able to modulate inflammation mediated by LPS in U937 cells preventing the increase of ROS intracellular levels through interaction with the MAPK pathway.


Asunto(s)
Inhibidores Enzimáticos/química , Glutatión/química , Glutatión/síntesis química , Sistema de Señalización de MAP Quinasas/efectos de los fármacos , Profármacos/química , Especies Reactivas de Oxígeno/metabolismo , Permeabilidad de la Membrana Celular , Diseño de Fármacos , Evaluación Preclínica de Medicamentos , Humanos , Concentración de Iones de Hidrógeno , Lipopolisacáridos/química , Modelos Químicos , Monocitos/citología , Permeabilidad , Temperatura , Células U937
13.
Front Bioeng Biotechnol ; 12: 1427411, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39055337

RESUMEN

Many recent studies have explored the healing properties of the extremely low-frequency electromagnetic field (ELF-EMF) to utilize electromagnetism for medical purposes. The non-invasiveness of electromagnetic induction makes it valuable for supportive therapy in various degenerative pathologies with increased oxidative stress. To date, no harmful effects have been reported or documented. We designed a small, wearable device which does not require a power source. The device consists of a substrate made of polyethylene terephthalate and an amalgam containing primarily graphene nanocrystals, also known as quantum dots. This device can transmit electromagnetic signals, which could induce biological effects. This study aims to verify the preliminary effects of the electromagnetic emission of the device on leukemic cells in culture. For this purpose, we studied the best-known effects of magnetic fields on biological models, such as cell viability, and the modulations on the main protagonists of cellular oxidative stress.

14.
Eur J Ophthalmol ; : 11206721241236919, 2024 Mar 05.
Artículo en Inglés | MEDLINE | ID: mdl-38444247

RESUMEN

BACKGROUND: recently much studies evidenced the potential role of photo-biomodulation (PBM) in patients affected by Age-related Macular Degeneration (AMD). We designed a new wearable device for self-medication that employs the same broadband red light described in literature, but with extremely low irradiance. AIM: to demonstrate the safety and effectiveness of low-fluence light stimulations emitted by a LED source with appropriate wavelengths through our new device in improving short-term visual function in patients affected by severe non neovascular AMD. MATERIALS AND METHODS: we prospectively enrolled patients affected by severe non-neovascular AMD with a relative sparing of the foveal region. All the patients were randomly assigned in placebo or in treatment group. The treatment consisted of 10 sessions of 10-min each, using the new device comprised of micro-LEDs that emitted light onto an amorphous support assembled within Metallic eyeglasses. The placebo group blindly underwent the same number of PBM sessions with the micro-LED turned off. Before and after each placebo/treatment sessions all the patients received: optical coherence tomography (OCT), Best-Corrected Visual Acuity (BCVA) and Microperimetry (MP). RESULTS: no significant differences in the anatomical parameters were observed in the two groups. The MP mean sensitivity and the central visual function both far and near significantly improved in the treated group (respectively p < 0.001, p < 0.001). CONCLUSIONS: our pivotal demonstrated that the LED PBM delivered through our new device is a safe and effective tool for improving short-term visual function in patients affected by severe non-neovascular AMD.

15.
Biochim Biophys Acta ; 1820(12): 2095-104, 2012 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-22951221

RESUMEN

BACKGROUND: Previous reports suggest that NO may contribute to the pathophysiology of septic shock. Recently, we have synthesized and characterized a series of benzyl- and dibenzyl derivative of N-(3-aminobenzyl)acetamidine, a potent and selective inhibitor of iNOS, in vitro assay. We evaluated the molecular mechanisms by which these compounds are involved in the regulation of NOSs expression. METHODS: H9c2 cells were stimulated with lipopolysaccharide (LPS) in the presence or absence of acetamidine-derivative. The NOSs mRNA and protein, and activation of signaling pathways (Akt and NF-κB) were assayed. RESULTS: The induction of endotoxic shock in H9c2 with LPS caused an increase of inducible NOS and a down-regulation of constitutive NOS. The molecular mechanism involved in the modulation of NOSs expression in H9c2 cells upon LPS stimulation resulted in the modification of the redox state responsible for NF-kB nuclear translocation via NIK -IKKα/ß-IkBα, simultaneously to the inactivation of the PI3K/Akt pathway. The compounds acted as an anti-inflammatory modulator. CONCLUSION: These results suggest that LPS regulates the opposite NOS expression in H9c2 cells by modifying the redox state of these cells responsible for the NF-kB nuclear translocation via NIK-IKKα/ß-IkBα, simultaneous to the inactivation of the PI3K/Akt pathway. The new molecule acts as an anti-inflammatory modulator in LPS-induced inflammation in H9c2 cells by the restoration of eNOS and nNOS expressions, mechanistically involving the PI3K/Akt pathway. GENERAL SIGNIFICANCE: This study delineates the underlying mechanisms of opposite NOSs expression in H9c2 cells stimulated with LPS.


Asunto(s)
Amidinas/farmacología , Inflamación/metabolismo , Lipopolisacáridos/farmacología , Mioblastos Cardíacos/metabolismo , Óxido Nítrico Sintasa de Tipo II/metabolismo , Fosfatidilinositol 3-Quinasas/metabolismo , Proteínas Proto-Oncogénicas c-akt/metabolismo , Animales , Antiinflamatorios/farmacología , Apoptosis/efectos de los fármacos , Western Blotting , Proliferación Celular/efectos de los fármacos , Células Cultivadas , Citometría de Flujo , Humanos , Quinasa I-kappa B/genética , Quinasa I-kappa B/metabolismo , Inflamación/inducido químicamente , Inflamación/patología , Mioblastos Cardíacos/citología , Mioblastos Cardíacos/efectos de los fármacos , FN-kappa B/genética , FN-kappa B/metabolismo , Óxido Nítrico Sintasa de Tipo II/genética , Nitritos/metabolismo , Oxidación-Reducción , Fosfatidilinositol 3-Quinasas/genética , Proteínas Proto-Oncogénicas c-akt/genética , ARN Mensajero/genética , Ratas , Especies Reactivas de Oxígeno/metabolismo , Reacción en Cadena en Tiempo Real de la Polimerasa , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Transducción de Señal/efectos de los fármacos
16.
Electrophoresis ; 34(15): 2275-80, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23712818

RESUMEN

Analytical methods for quantification of 5'-methylcytosine in genomes are important tools to investigate epigenetic changes in gene expression during development, differentiation, aging, or cancer. Here, we report a novel genomic methylation content assay based on enzymatic hydrolysis of DNA and MEKC separation of 5'-deoxyribonucleoside monophosphates (dNMP) using the cationic surfactant CTAB as pseudostationary phase. Calf Thymus DNA was used during method development to determine electrophoretic parameters and electrolyte composition for a complete separation between 2'-deoxycytosine-5'-monophosphate and 2'-deoxy-5'-methylcytosine 5'-monophosphate (d5mCMP). Methylated and not methylated oligonucleotides were used to confirm the identity of each peak and evaluate analytical parameters of the method. The LOD of the method was found to be 12.5 pmol/µL for d5mCMP.


Asunto(s)
Cromatografía Capilar Electrocinética Micelar/métodos , Metilación de ADN , ADN/metabolismo , Espectrofotometría Ultravioleta/métodos , Animales , Bovinos , Cetrimonio , Compuestos de Cetrimonio , Citidina Monofosfato/análogos & derivados , Citidina Monofosfato/análisis , Citidina Monofosfato/química , ADN/genética , Hidrólisis , Límite de Detección , Reproducibilidad de los Resultados
17.
Aggress Behav ; 39(2): 141-8, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-23208827

RESUMEN

Recently, several studies reported a relationship between immune system activation and anger expression. Consequently, the aim of this study was to explore immunitary molecular mechanisms that potentially underlie anger expression. To this end, we applied the Frustration-Aggression Theory in a contact sport model, utilizing the nearing of sporting events to trigger anger feelings. In parallel, we evaluated the activation of immune system at mRNA levels. We enrolled 20 amateur rugby players (age ± SD, 27.2 ± 4.5) who underwent psychological assessment to evaluate anger, with the State-Trait Anger Expression Inventory-2 (STAXI-2), before rugby matches; at the same time blood samples were taken to analyze the variations of gene expression by microarray. During the 2 hr before each game, a significant increase was verified in the Rage State (RS) score compared to the score ascertained 72 hr before. At the same time, we found modulation in expression profile, in particular increased expression of gene that encodes interleukin l-ß (IL-1ß). In a regression analysis, RS score was related to IL-1ß, and the potential risk factors age, body mass index, smoking, and drinking. The levels of cytokine were positively and independently related to RS score. Our results suggest that the nearing of sporting event can trigger anger state feelings and activate immune system in rugby players. We propose the IL-1ß as a potential biological marker of anger. However, further research is necessary to clarify the correlation between cytokine and anger.


Asunto(s)
Ira/fisiología , Atletas/psicología , Fútbol Americano/fisiología , Interleucina-1beta/sangre , Adulto , Factores de Edad , Agresión/fisiología , Consumo de Bebidas Alcohólicas/psicología , Índice de Masa Corporal , Fútbol Americano/psicología , Humanos , Masculino , Factores de Riesgo , Fumar/psicología , Encuestas y Cuestionarios
18.
Int J Mol Sci ; 14(12): 24412-21, 2013 Dec 16.
Artículo en Inglés | MEDLINE | ID: mdl-24351825

RESUMEN

There is growing evidence that increased levels of the endogenous NO synthase inhibitor asymmetric dimethylarginine (ADMA) may contribute to endothelial dysfunction. Studies in animal models as well as in humans have suggested that the increase in ADMA occurs at a time when vascular disease has not yet become clinically evident. ADMA competitively inhibits NO elaboration by displacing L-arginine from NO synthase. In a concentration-dependent manner, it thereby interferes not only with endothelium-dependent, NO-mediated vasodilation, but also with other biological functions exerted by NO. The upshot may be a pro-atherogenic state. Recently, several studies have investigated the effect of various therapeutical interventions on ADMA plasma concentrations.


Asunto(s)
Arginina/análogos & derivados , Enfermedades Cardiovasculares/metabolismo , Animales , Arginina/metabolismo , Enfermedades Cardiovasculares/patología , Humanos , Inflamación , Óxido Nítrico/metabolismo , Óxido Nítrico Sintasa/antagonistas & inhibidores , Óxido Nítrico Sintasa/metabolismo , Estrés Oxidativo , Especies Reactivas de Oxígeno/metabolismo , Factores de Riesgo
19.
Healthcare (Basel) ; 11(9)2023 Apr 25.
Artículo en Inglés | MEDLINE | ID: mdl-37174763

RESUMEN

The investigation of this observational case-control study aimed at determining the effectiveness of a combined treatment of extremely low-frequency electromagnetic fields (ELF) with a soft elastic knee brace versus ELF alone in knee osteoarthritis (KOA) with respect to a reduction in pain and functional recovery. We hypothesized that the combined use of ELF and a soft elastic knee brace may provide better results. Thirty-five patients (N = 35, divided into Group 1 = ELF and Group 2 = ELF with the soft elastic knee brace) were analyzed. The rehabilitative protocol consisted of 10 sessions of antiphlogistic and antiedema programs (first cycle) for 2 weeks, followed by twelve sessions of bone repair and connective tissue repair programs (second cycle) in patients with knee osteoarthritis (KOA) for 4 weeks. Patient evaluations were conducted at baseline (T0) and after 2 (T1) and 4 (T2) weeks of treatment. A follow-up evaluation was conducted 6 weeks after treatment (T3). The LIMFA© Therapy System was used to create multifrequency magnetoelectric fields with an intensity of 100 µT and a low-frequency field. The Incrediwear Cred 40 knee sleeve (Incred) was used for alleviating knee pain. The Visual Analogue Scale (VAS), the Knee Injury and Osteoarthritis Outcome Score (KOOS), and the Lysholm score (Ls) were used as outcome measures. The results showed that pain at rest (Vr), pain in motion (Vm), KOOS, and Ls were significantly affected by ELF over time. In conclusion, Group 2 had a better response in terms of pain resolution at rest (p < 0.05) and a concurrent better response at T3 in terms of functional recovery (p < 0.05).

20.
Biomolecules ; 13(12)2023 11 30.
Artículo en Inglés | MEDLINE | ID: mdl-38136598

RESUMEN

Several studies have already demonstrated the biocompatibility of a tooth as a grafting material in the regeneration of bone tissue, showing its osteoconductive potential, while no studies have verified whether the osteoinductive potential of a tooth remains constant or is altered after its treatment with the Tooth Transformer (TT) device. The aim of the study was to demonstrate that the treatment with the TT device did not alter the osteoinductivity of an extracted tooth that was stored dry. Twelve extracted human teeth were collected from real patients. Caries, tartar and filling materials were removed from each tooth; each tooth was coarsely cut and stored at room temperature (RT) until use. Each sample was shredded, demineralized and disinfected, using the TT device. Protein extraction was carried out for each sample, and Western Blot analysis was performed to test the presence of mineralization protein LIM-1 and transforming growth factor-ß. The presence of the human Bone Morphogenetic Protein 2 (BMP-2) and human collagen Type I (COL-I) was found in dry tooth samples processed with the TT device and subjected to Enzyme-Linked Immunosorbent Assay (ELISA) testing. The treatment of chemical demineralization using the TT device does not alter the osteoinductive potential of a dry tooth.


Asunto(s)
Proteínas Morfogenéticas Óseas , Factor de Crecimiento Transformador beta , Humanos , Regeneración Ósea , Colágeno Tipo I , Western Blotting
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA