1,488 results match your criteria: "University of Puerto Rico-Río Piedras[Affiliation]"
Microorganisms
November 2024
Biology Department, University of Puerto Rico-Rio Piedras, San Juan 00931, Puerto Rico.
'Frozen' virus genome sequences are sampled from outbreaks and have unusually low sequence divergence when compared to genome sequences from historical strains. A growing number of 'frozen' virus genome sequences are being reported as virus genome sequencing becomes more common. Examples of 'frozen' sequences include the 1977 H1N1 'Russian' flu; Venezuelan Equine Encephalitis Virus from Venezuela and Colombia in 1995; E71 sequences from a Hand, Foot and Mouth outbreak in 2007-2009 in China; and a polio strain isolated in 2014 from Anhui, China.
View Article and Find Full Text PDFAlzheimers Dement (N Y)
November 2024
Department of Psychiatry, Harvard Medical School Massachusetts General Hospital Boston Massachusetts USA.
Objective: Physical activity (PA) has been linked to reduced Alzheimer's disease (AD) risk. However, less is known about its effects in the AD preclinical stage. We aimed to investigate whether greater PA was associated with lower plasma biomarkers of AD pathology, neural injury, reactive astrocytes, and better cognition in individuals with autosomal-dominant AD due to the presenilin-1 E280A mutation who are virtually guaranteed to develop dementia.
View Article and Find Full Text PDFJACS Au
December 2024
Department of Chemistry, University of Puerto Rico, Río Piedras Campus, Río Piedras, Puerto Rico 00931, United States.
Targeting iron metabolism has emerged as a novel therapeutic strategy for the treatment of cancer. As such, iron chelator drugs are repurposed or specifically designed as anticancer agents. Two important chelators, deferasirox (Def) and triapine (Trp), attack the intracellular supply of iron (Fe) and inhibit Fe-dependent pathways responsible for cellular proliferation and metastasis.
View Article and Find Full Text PDFSci Rep
December 2024
Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy.
The Anopheles maculipennis complex consists of several mosquito species, including some primary malaria vectors. Therefore, the presence of a species in a particular area significantly affects public health. In this study, 1252 mosquitoes were collected in northern Italy, representing four identified species of the Anopheles maculipennis complex (Anopheles daciae sp.
View Article and Find Full Text PDFAppetite
December 2024
VA Boston Healthcare System, 150 South Huntington, Boston, MA, 02130, USA; National Center for PTSD, 150 South Huntington, Boston, MA, 02130, USA; Boston University School of Medicine, 72 East Concord St. Boston, MA, 02118, USA. Electronic address:
Examinations of links between plant-based diets (e.g., vegetarian and vegan diets) and indices of physical and mental health have received increased attention in the scientific literature in recent years.
View Article and Find Full Text PDFChemMedChem
December 2024
Department of Chemistry, University of Puerto Rico, Río Piedras Campus, Río Piedras, Puerto Rico, 00925-2537, United States.
Tinoco A-Team Deferasirox (Def), an orally administered iron-chelating drug, has drawn significant interest in repurposing for anticancer application due to the elevated Fe demand by cancer cells. But there are also concerns about its severe off target health effects. Herein Cu(II) binding is studied as a potential off target interaction.
View Article and Find Full Text PDFmedRxiv
December 2024
Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA.
Highly Pathogenic Avian Influenza strain H5N1 has caused a multi-state outbreak among US dairy cattle, spreading across 15 states and infecting hundreds of herds since its onset. We rapidly developed and optimized PCR-based detection assays and sequencing protocols to support H5N1 molecular surveillance. Using 214 retail milk from 20 states for methods development, we found that H5N1 concentrations by digital PCR strongly correlated with qPCR cycle threshold (Ct) values, with dPCR exhibiting greater sensitivity.
View Article and Find Full Text PDFJ Gerontol B Psychol Sci Soc Sci
December 2024
Edson College of Nursing and Health Innovation, Arizona State University, Phoenix, AZ, USA.
Objectives: This study examined the association between childhood adversity and late-life cognitive outcomes among older Puerto Rican adults.
Methods: Data were from the PREHCO study, a population-based cohort of 3,713 older Puerto Rican adults (mean age 72.5 years; 60% female).
P R Health Sci J
December 2024
University of Puerto Rico Comprehensive Cancer Center, Cancer Control and Population Sciences Division, San Juan, Puerto Rico.
Objective: Evaluate the relationship between diabetes and hypertension and COVID-19 booster uptake.
Methods: Members of the Community Outreach Group of the Puerto Rico Community Engagement Alliance Against COVID-19 Disparities (PR-CEAL) administered a survey at 229 community events between November 2021 and May 2023. Information on 2,145 participants' sociodemographic information and chronic disease diagnoses was gathered.
P R Health Sci J
December 2024
University of Puerto Rico, Río Piedras Campus, San Juan, Puerto Rico.
The abuse of psychoactive substances poses a critical public health challenge in Puerto Rico, with far-reaching implications for both individuals and society as a whole. This article provides a comprehensive overview of the patterns and trends associated with drug abuse in Puerto Rico, focusing on alcohol, tobacco, cannabis, benzodiazepines, opioids, and methadone. Recent statistics reveal a concerning increase in substance abuse, particularly among young adults.
View Article and Find Full Text PDFAnn Bot
December 2024
School of Biological Sciences, University of Hong Kong, Pokfulam, Hong Kong.
Background And Aims: Tropical forests exchange more carbon dioxide (CO2) with the atmosphere than any other terrestrial biome. Yet, uncertainty in the projected carbon balance over the next century is roughly three-times greater for the tropics than other ecosystems. Our limited knowledge of tropical plant physiological responses, including photosynthetic, to climate change is a substantial source of uncertainty in our ability to forecast the global terrestrial carbon sink.
View Article and Find Full Text PDFEcology
December 2024
Department of Biological Sciences, Purdue University, West Lafayette, Indiana, USA.
ChemSusChem
December 2024
Department of Chemistry, University of Puerto Rico, Rio Piedras, San Juan, PR, 00931, United States.
With energy shortages and excessive CO emissions driving climate change, converting CO into high-value-added products offers a promising solution for carbon recycling. We investigate CO reduction reactions (CORR) catalyzed by 10 single-atom catalysts (SACs), incorporating weak non-covalent interactions, specifically lone pair-π and H-π interactions. The SACs, consisting of transition metals coordinated by three carbon atoms in a defective graphene substrate (3C-TM, TM=Sc-Zn), leverage these interactions to influence the energy fluctuations of intermediates and the limiting potentials of CORR, without altering the overall reaction pathway.
View Article and Find Full Text PDFNanoscale
January 2025
Department of Chemistry, University of Puerto Rico-Rio Piedras Campus, San Juan, PR 00925-2537, USA.
Aqueous trivalent metal batteries are promising options for energy storage, owing to their ability to transfer three electrons during redox reactions. However, advances in this field have been limited by challenges such as incompatible M/M electrode potentials and salt hydrolysis. Herein, we identify the trivalent indium metal as a viable candidate and demonstrate a high-performance indium-Prussian blue hybrid battery using a K/In mixture electrolyte.
View Article and Find Full Text PDFJ Relig Health
November 2024
Clinical Psychology Program, School of Behavioral and Brain Sciences, Ponce Health Sciences University, Ponce, Puerto Rico.
Molecules
October 2024
Department of Physics, University of Puerto Rico at Río Piedras, San Juan, PR 00931, USA.
This study addresses the persistent challenge of polysulfide dissolution in lithium-sulfur (Li-S) batteries by introducing magnesium oxide (MgO) nanoparticles as a novel additive. MgO was integrated with sulfur using a scalable process involving solid-state melt diffusion treatment followed by planetary ball milling. XRD measurements confirmed that sulfur (S) retains its orthorhombic crystalline structure (space group Fddd) following the MgO incorporation, with minimal peak shifts indicating slight lattice distortion, while the increased peak intensity suggests enhanced crystallinity due to MgO acting as a nucleation site.
View Article and Find Full Text PDFNanomaterials (Basel)
October 2024
Department of Physics, University of Puerto Rico-Rio Piedras Campus, San Juan, PR 00925, USA.
Amidst the swift expansion of the electric vehicle industry, the imperative for alternative battery technologies that balance economic feasibility with sustainability has reached unprecedented importance. Herein, we utilized Perovskite-based oxide compounds barium titanate (BaTiO) and strontium titanate (SrTiO) nanoparticles as anode materials for lithium-ion batteries from straightforward and standard carbonate-based electrolyte with 10% fluoroethylene carbonate (FEC) additive [1M LiPF (1:1 EC: DEC) + 10% FEC]. SrTiO and BaTiO electrodes can deliver a high specific capacity of 80 mA h g at a safe and low average working potential of ≈0.
View Article and Find Full Text PDFBiomedicines
October 2024
Department of Anatomy and Neurobiology, School of Medicine, University of Puerto Rico, Medical Sciences Campus, San Juan, PR 00936, USA.
Clinically approved iron chelators, originally designed to address iron overload disorders, have emerged as potential anticancer agents. Deferasirox (Def), a tridentate iron chelator, has demonstrated antiproliferative effects in cancer. : This study aims to elucidate the mechanism of action of Def and its impact on non-small cell lung carcinoma (NSCLC).
View Article and Find Full Text PDFCereb Cortex
October 2024
Neurobiology Section in the Department of Biology, Boston University, Boston, MA, United States.
Molecules
October 2024
Department of Physics, University of Puerto Rico-Rio Piedras Campus, San Juan, PR 00925, USA.
Silicon (Si) has attracted worldwide attention for its ultrahigh theoretical storage capacity (4200 mA h g), low mass density (2.33 g cm), low operating potential (0.4 V vs.
View Article and Find Full Text PDFInorganics (Basel)
January 2024
Department of Chemistry, University of Puerto Rico, Río Piedras Campus, San Juan, PR 00925, USA.
J Undergrad Neurosci Educ
August 2024
Biology Department, College of Natural Sciences, University of Puerto Rico-Rio Piedras Campus, San Juan, PR 00931.
Ecol Lett
September 2024
Universite Grenoble Alpes, Institut National de Recherche Pour Agriculture, Alimentation et Environnement (INRAE), Laboratoire EcoSystemes et Societes En Montagne (LESSEM), Grenoble, France.
Biomedicines
August 2024
Department of Microbiology and Medical Zoology, University of Puerto Rico, Medical Sciences Campus, San Juan, PR 00936, USA.
Cancers (Basel)
September 2024
Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.