Publications by authors named "Martinez S"

Our group has synthesized a pleiotropic synthetic nanozyme redox mediator we term a "pleozyme" that displays multiple enzymatic characteristics, including acting as a superoxide dismutase mimetic, oxidizing NADH to NAD, and oxidizing HS to polysulfides and thiosulfate. Benefits have been seen in acute and chronic neurological disease models. The molecule is sourced from coconut-derived activated charcoal that has undergone harsh oxidization with fuming nitric acid, which alters the structure and chemical characteristics, yielding 3-8 nm discs with broad redox potential.

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Objectives: Airway compromise in neck cancer patients with distorted anatomy has been a challenge for head and neck surgeons. To the best of our knowledge, the use of ultrasound has not been reported as an adjunct prior to an awake urgent tracheostomy in these types of patients. Our main objective is to provide an additional tool for identification of vital neck structures in preparation for an awake tracheostomy.

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In this work the development of photoactive dressings (PAD) with dual purpose, is presented. These PAD can be used for the topical treatment of persistent infections caused by fungi and bacteria and are also applicable in light antitumor therapy for carcinoma. The synthesized PAD were designed employing conjugated polymer nanoparticles (CPN) doped with platinum porphyrin which serve as polymerization photoinitiators and photosensitizers for the production of reactive oxygen species (ROS).

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Background: The objective of this study was to determine whether postoperative pager alerts to the Hospital Elder Life Program (HELP), a delirium prevention service, would accelerate program enrollment for older surgical patients. This study also tested feasibility of family care partner interventions for delirium prevention.

Methods: This single-center, pilot clinical trial factorially randomized 57 non-cardiac surgical patients ≥70 years of age to 4 arms: (1) standard care, (2) pager alerts to accelerate HELP enrollment, (3) family care partner-based delirium prevention interventions, or (4) a combined arm with both HELP and family interventions.

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Objective: To evaluate agomelatine treatment in elderly patients with major depressive disorder (MDD) who developed hyponatremia while using selective serotonin receptor inhibitors (SSRIs).

Methods: Patients (60 years or older) with hyponatremia after SSRI treatment for MDD were changed to agomelatine 50 mg/day during one month to observe sodium levels during the treatment and change in depressive symptoms. Montgomery-Asberg Depression Rating Scale (MADRS) and the Clinical Global Impression Scale (CGI) of severity were used before and after treatment with agomelatine.

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Article Synopsis
  • The study investigates the mechanical strength of fetal membranes in women at risk for preterm premature rupture of membranes (PPROM) through a series of tensile tests on tissue samples collected from pregnant women undergoing cesarean sections.
  • Results indicate that first-time mothers (primiparous) have weaker fetal membranes compared to those with previous births, while factors like gestational diabetes and geographic origin affect membrane properties such as thickness and mechanical strength.
  • Overall, thicker membranes show decreased rigidity and resistance, highlighting the complex interplay between various risk factors and membrane integrity in pregnancy.
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RA-0003022 () was identified as a high-quality covalent chemical probe for nsP2 cysteine protease (nsP2pro). Isoxazole covalently captured the active site C478 and inactivated the enzyme with a / ratio of 6000 Ms. A negative control analog RA-0025453 () retained the covalent warhead but demonstrated >100-fold decrease in enzyme inhibition.

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: Respiratory illnesses frequently lead to hospitalization in adults aged 60 and older, especially due to respiratory viral infectious (RVI). This study investigates hospitalization patterns and characteristics of RVI at HM Hospitals from October 2023 to March 2024; : We retrospectively explored hospitalizations of patients aged 60 years and older with RVIs, gathering data on demographics, clinical profiles, comorbidities, and treatments. Outcomes included hospitalization, ICU admissions, and mortality, and independent factors associated with outcomes were identified using a multi-state model; : From October 2023 to March 2024, from a total of 3258 hospitalizations, 1933 (59.

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Purpose: To describe the effectiveness and persistence of treatment with three anti-TNFα drugs, Infliximab, Etanercept, and Adalimumab, in patients with Rheumatoid Arthritis (RA) in a rheumatology center.

Patients And Methods: A longitudinal, retrospective cohort study was conducted. Data were obtained from the health records of patients with RA who were followed up in a rheumatology center between 2011 and 2019 under a multidisciplinary healthcare model (MCM).

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Complex percutaneous cardiac intervention (PCI) is a growing procedure in modern day cath labs. The treated population is often older, with multiple comorbidities, complex coronary anatomy, left ventricular dysfunction, and possibly concomitant valvular heart disease and/or cardiogenic shock. As such, PCI of bifurcations, chronic total occlusions, and atherectomy coronary interventions are becoming more common.

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Di-2-ethylhexyl terephthalate (DEHTP) is a replacement for its structural isomer di-2-ethylhexyl phthalate (DEHP), a known endocrine disrupting chemical and ovarian toxicant. DEHTP is used as a plasticizer in polyvinyl chloride products and its metabolites are increasingly found in biomonitoring studies at levels similar to phthalates. However, little is known about the effects of DEHTP on the ovary.

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This study delves into the eco-dynamics of three dolphin species in the ultra-oligotrophic waters off the southern Israeli Mediterranean coast - two neritic: the common bottlenose dolphin (Tursiops truncatus) and the common dolphin (Delphinus delphis) and one pelagic: the striped dolphin (Stenella coeruleoalba). It utilizes compound-specific stable isotope analysis of individual amino acids to investigate carbon and nitrogen source variability and trophic positioning among the three species. Muscle samples from stranded individuals were analyzed for carbon (δC) and nitrogen (δN) isotopic ratios of amino acids, with ΔδN (Glutamate-Phenylalanine) acting as an indicator of relative trophic position.

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Background: Stereotactic radiosurgery (SRS) is an effective treatment for essential tremor (ET) and Parkinsonian tremor (PT). However, current treatment methods can be time-consuming and expose patients to unnecessary radiation. This study investigates the use of the Varian TrueBeam system with FFF beam modes as a potential solution for these issues.

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: Historically racialized status (HRS) and low socioeconomic position (SEP) are independent risk factors for food insecurity and poor academic achievement among college students. Despite increased enrollment of students from historically racialized groups and low SEP, little is known regarding the intersectional experience of these contemporary student characteristics with food security status or academic achievement. The purpose of this study was to examine the intersections of racialized status and SEP with food insecurity and academic achievement among undergraduate students attending a public university system in California.

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Diabetic nephropathy (DN) is a globally widespread complication of (DM). Research indicates that pioglitazone and linagliptin mitigate the risk of DN by reducing inflammation, oxidative stress, and fibrosis. The role of tamsulosin in DN is less studied, but it may contribute to reducing oxidative stress and inflammatory responses.

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Ni nanoparticles supported on graphene-based materials were tested as catalysts for the oxygen reduction reaction (ORR) to be used in anion exchange membrane fuel cells (AEMFCs). The introduction of N into the graphene structure produced an enhancement of electrocatalytic activity by improving electron transfer and creating additional active sites for the ORR. Materials containing both N and S demonstrated the highest stability, showing only a 3% performance loss after a 10 h stability test and therefore achieving the best overall performance.

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Vitamins and essential minerals are micronutrients that are required for the normal functioning of the human body. However, they may lead to adverse health effects if consumed in excess. A tolerable upper intake level (UL) is a science-based reference value that supports policy-makers and other relevant actors in managing the risks of excess nutrient intake.

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Artificial intelligence (AI) models can produce output that closely mimics human-generated content. We examined individual differences in the human ability to differentiate human- from AI-generated texts, exploring relationships with fluid intelligence, executive functioning, empathy, and digital habits. Overall, participants exhibited better than chance text discrimination, with substantial variation across individuals.

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: Respiratory syncytial virus (RSV) is a major cause of hospitalization in infants. Nirsevimab has demonstrated to be a promising tool for preventing severe RSV disease. Although clinical trials have demonstrated the efficacy of Nirsevimab in preventing severe RSV disease, evidence regarding its performance in real-world clinical settings is still limited due to its recent introduction.

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Background: Some studies in humans show that the concurrent use of clopidogrel and omeprazole decreases plasma clopidogrel active metabolite (CAM) concentrations and clopidogrel antiplatelet effects. Whether this drug interaction occurs in cats is unknown.

Hypothesis: We hypothesized that administration of clopidogrel with omeprazole would decrease plasma CAM concentrations and decrease clopidogrel antiplatelet effects in healthy cats.

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Article Synopsis
  • The study aimed to investigate the relationship between phase angle (PhA), a marker of hydration and nutritional status, and the development of sarcopenia in older adults.
  • It involved 696 participants aged 75 and older, assessing them for sarcopenia and related physical capabilities over 24 months using various tests and methods.
  • While lower baseline PhA was observed in those who developed sarcopenia, it was not confirmed as a significant predictor after accounting for other related factors, raising questions about its practical use as an early marker for sarcopenia risk.
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  • The study focused on improving the diagnosis of dementia with Lewy bodies (DLB), especially in its early stages, when symptoms can overlap with Alzheimer's and Parkinson's disease.
  • Researchers conducted a cross-sectional study comparing newly diagnosed DLB patients to those with Alzheimer's, Parkinson's, and a control group, utilizing transcranial sonography (TCS) to measure specific brain parameters.
  • Results indicated that higher echogenicity in the substantia nigra (SN) and wider frontal horns of lateral ventricles were strong predictors for diagnosing DLB, suggesting these TCS parameters could help differentiate DLB from other neurodegenerative disorders.
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We reveal the geometric structure existing on segregation of a pair of orbital angular momentum (OAM) states from the total random light beam and introduce new quantities, to the best of our knowledge, for its characterization. In particular, the degree and the ellipse of orbitalization are introduced in analogy with those in the polarization theory. Free-space propagation of these quantities is illustrated by numerical examples.

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Article Synopsis
  • LC-HRMS is now the go-to method for analyzing human plasma lipids, but it has challenges due to the complexity of lipids and the data generated.
  • This study created a comprehensive lipid database from the NIST® Human Plasma Standard (SRM 1950) and improved quality assurance procedures to enhance lipid profiling accuracy.
  • The developed database, featuring 592 lipid entries, effectively speeds up and streamlines the analysis of human plasma from healthy individuals, aiming to reduce data redundancy and delays in lipidomic research.
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