Publications by authors named "Maria L Nieto"

Background: Modified citrus pectin (MCP) is used as a nutritional supplement that inhibits galectin-3 activity, a central player in the cardiac damage associated with different pathological situations. In fact, we have previously observed that MCP improved cardiac function in obese infarcted rats that was associated with a reduction in cardiac fibrosis. Therefore, the aim of the present study was to further explore whether this effect could involve the modulation of gene expression of ECM components and their mediators as well as whether it could affect another two mechanisms involved in cardiac damage: mitochondrial dynamics and autophagic flux.

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Background: Chronic cough (cough lasting for ≥8 weeks) can lead to significant impairment in quality of life (QoL). Using patient-reported outcomes, this cohort study assessed the perceived impact of chronic cough on QoL and everyday life in patients from outpatient hospital clinics with refractory chronic cough (RCC) or unexplained chronic cough (UCC).

Methods: This was a multicentre, non-interventional survey study.

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Multiple sclerosis (MS) is a dysimmune and neurodegenerative disease of the central nervous system that continues to be one of the main causes of non-traumatic disability in young people despite the recent availability of highly effective drugs. Exercise-based interventions seem to have a positive impact on the course of the disease although pathophysiological mechanisms responsible for this benefit remain unclear. This is a longitudinal study to examine the effects of a short-term training program on neurofilament plasma levels, a biomarker of axonal destruction, measured using the ultrasensitive single molecule array (SiMoA).

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Obstructive sleep apnea (OSA) during pregnancy is characterized by episodes of intermittent hypoxia (IH) during sleep, resulting in adverse health outcomes for mother and offspring. Despite a prevalence of 8-20% in pregnant women, this disorder is often underdiagnosed.We have developed a murine model of gestational OSA to study IH effects on pregnant mothers, placentas, fetuses, and offspring.

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Multiple sclerosis (MS) is a CNS inflammatory demyelinating disease. Recent investigations highlight the gut-brain axis as a communication network with crucial implications in neurological diseases. Thus, disrupted intestinal integrity allows the translocation of luminal molecules into systemic circulation, promoting systemic/brain immune-inflammatory responses.

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Microglia, the resident macrophage-like population in the CNS, plays an important role in the pathogenesis of many neurodegenerative disorders. is known to produce different metabolites with anti-inflammatory, anti-oxidant and analgesic properties. Although the species is popularly used for the treatment of different types of inflammatory processes, its biological effects on neuroinflammation have not yet been addressed.

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A proteomic approach was used to characterize potential mediators involved in the improvement in cardiac fibrosis observed with the administration of the mitochondrial antioxidant MitoQ in obese rats. Male Wistar rats were fed a standard diet (3.5% fat; CT) or a high-fat diet (35% fat; HFD) and treated with vehicle or MitoQ (200 μM) in drinking water for 7 weeks.

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We have evaluated the role of mitochondrial oxidative stress and its association with endoplasmic reticulum (ER) stress activation in the progression of obesity-related cardiovascular fibrosis. MitoQ (200 µM) was orally administered for 7 weeks to male Wistar rats that were fed a high-fat diet (HFD, 35% fat) or a control diet (CT, 3.5% fat).

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Background: Multiple sclerosis (MS) is a chronic demyelinating autoimmune disease affecting the CNS. Recent studies have indicated that intestinal alterations play key pathogenic roles in the development of autoimmune diseases, including MS. The triterpene oleanolic acid (OA), due to its anti-inflammatory properties, has shown to beneficially influence the severity of the experimental autoimmune encephalomyelitis (EAE), a preclinical model of MS.

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Unlabelled: Oxidative stress and proinflammatory cytokines are factors affecting multiple sclerosis (MS) disease progression. Oleacein (OLE), an olive secoiridoid, possesses powerful antioxidant and anti-inflammatory activities, which suggests its potential application to treat neuroinflammatory disorders. Herein, we investigated the impact of OLE on the main clinic-pathological features of experimental autoimmune encephalomyelitis (EAE), an animal model for MS, including paralysis, demyelination, central nervous system (CNS) inflammation/oxidative stress and blood-brain barrier (BBB) breakdown.

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Background: The objective of this study is to determine the role of mitochondrial oxidative stress in the dysbiosis associated with a high fat diet in rats. In addition, the impact of gut microbiota (GM) in the cardiometabolic consequences of diet-induced obesity in rats has been evaluated.

Methods: Male Wistar rats were fed either a high fat diet (HFD) or a control (CT) one for 6 weeks.

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Article Synopsis
  • The study investigated the effects of the antioxidant MitoQ on heart issues caused by obesity in rats fed a high-fat diet and treated with MitoQ for 7 weeks.
  • MitoQ significantly reduced oxidative stress and prevented various cardiac problems, such as fibrosis and hypertrophy, in obese rats, while also helping maintain the levels of important mitochondrial proteins.
  • In vitro tests showed that MitoQ could counteract harmful changes in cardiac myoblasts affected by palmitic acid, suggesting a connection between lipid toxicity and oxidative stress in heart damage related to obesity.
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Secreted phospholipase A-IIA (sPLA-IIA) is a pro-inflammatory protein associated with cardiovascular disorders, whose functions and underlying mechanisms in cardiac remodelling are still under investigation. We herein study the role of sPLA-IIA in cardiac fibroblast (CFs)-to-myofibroblast differentiation and fibrosis, two major features involved in cardiac remodelling, and also explore potential mechanisms involved. In a mice model of dilated cardiomyopathy (DCM) after autoimmune myocarditis, serum and cardiac sPLA-IIA protein expression were found to be increased, together with elevated cardiac levels of the cross-linking enzyme lysyl oxidase (LOX) and reactive oxygen species (ROS) accumulation.

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Introduction: There is currently no universally accepted definition of asthma-COPD overlap (ACO).

Objective: To compare the prevalence of ACO in patients with asthma or COPD, and to assess their clinical characteristics and the capacity of the different definitions to predict the risk of exacerbation.

Method: Prospective observational study with a 12-month follow-up in an asthma cohort and a COPD cohort.

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The impact of the mitochondria-targeted antioxidant MitoQ was evaluated in the metabolic alterations and the adipose tissue remodeling associated with obesity. Male Wistar rats were fed either a high-fat diet (HFD; 35% fat) or a standard diet (3.5% fat) for 7 wk and treated with MitoQ (200 µM).

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Objective: The impact of vaginal instrumentation on operative time for robotic-assisted sacrocolpopexy (RSC) is not well understood. Colpassist (Boston Scientific, Quincy, Mass) is a vaginal positioning device designed to improve exposure with a curved double-sided handle that can be adapted to patient anatomy with 2 different sized functional ends. We sought to compare operative time for RSC using a Colpassist compared with a traditional end-to-end anastomosis sizer (EEAS).

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Cardiac lipotoxicity is involved in the cardiac functional consequences associated with obesity. Therefore, the aim of this study was to explore whether changes in the mitochondrial lipid cardiac profile could reflect differences in cardiac function and structure in obese and non-obese rats with myocardial infarction (MI). Whether these changes can also be reflected in a specific plasma miRNA signature as markers of cardiac damage was also evaluated.

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Obesity is accompanied by metabolic alterations characterized by insulin resistance and cardiac lipotoxicity. Galectin-3 (Gal-3) induces cardiac inflammation and fibrosis in the context of obesity; however, its role in the metabolic consequences of obesity is not totally established. We have investigated the potential role of Gal-3 in the cardiac metabolic disturbances associated with obesity.

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We have investigated whether mineralocorticoid receptor activation can participate in the profibrotic effects of leptin in cardiac myofibroblasts, as well as the potential mechanisms involved. The presence of eplerenone reduced the leptin-induced increase in protein levels of collagen I, transforming growth factor β, connective tissue growth factor and galectin-3 and the levels of both total and mitochondrial of superoxide anion (O) in cardiac myofibroblasts. Likewise, the MEK/ERK inhibitor, PD98059, and the PI3/Akt inhibitor, LY294002, showed a similar pattern.

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Aims: To explore the impact of obesity on the cardiac lipid profile in rats with diet-induced obesity, as well as to evaluate whether or not the specific changes in lipid species are associated with cardiac fibrosis.

Methods: Male Wistar rats were fed either a high-fat diet (HFD, 35% fat) or standard diet (3.5% fat) for 6 weeks.

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Background: Atherosclerotic plaque formation is characterized by recruitment of monocytes/macrophages, which contributes to its calcification by releasing pro-osteogenic cytokines. Chemotaxis-related proteins, including netrin-1, gremlin-1 and macrophage inflammatory protein-1β (MIP-1β), regulate immune cell migration. However, their relation with the presence of subclinical atherosclerosis, assessed by measures of coronary artery calcifications (CAC) in patients without known coronary artery disease (CAD), remains unclear.

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Glioblastoma, the most aggressive type of primary brain tumour, shows worse prognosis linked to diabetes or obesity persistence. These pathologies are chronic inflammatory conditions characterized by altered profiles of inflammatory mediators, including leptin and secreted phospholipase A2-IIA (sPLA2-IIA). Both proteins, in turn, display diverse pro-cancer properties in different cell types, including astrocytes.

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The Braden scale is a widely used tool to assess pressure ulcer risk. Preoperative Braden scores were significantly associated with postoperative morbidity among women undergoing urogynecologic surgery for stress incontinence and pelvic organ prolapse.

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Objectives: Physical and cognitive function impairments are associated with increased perioperative morbidity; however, limited data exist regarding these parameters in women planning pelvic floor surgery. Thus, our goal was to assess baseline physical function and cognition in patients scheduled for pelvic reconstructive surgery and to evaluate factors associated with preoperative upper and lower body function.

Methods: In a prospective study, we evaluated sociodemographics, body mass index, the Functional Comorbidity Index (FCI), Katz Activities of Daily Living (ADL), and Instrumental ADL (IADL).

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