119,315 results match your criteria: "Argentina; National University of La Pampa[Affiliation]"
Cladistics
January 2025
Sección Paleontología de Vertebrados, CONICET-Museo Argentino de Ciencias Naturales Bernardino Rivadavia, Ángel Gallardo 470, Ciudad Autónoma de Buenos Aires, C1405DJR, Argentina.
We describe a protocol for estimating evolutionary rates from phylogenetic trees based on parsimony character optimization. The rate estimation is conducted through a TNT script and the results are analysed in a script for the software environment R. The TNT script allows analysing multiple optimal topologies, considering optimization ambiguity, and alternative time-calibrations or pre-calibrated trees.
View Article and Find Full Text PDFJ Anat
January 2025
CONICET-División Paleontología Vertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina.
The palaeobiology aspects of early Crocodylomorpha during their origin in the Triassic are poorly known, despite occupying an important palaeoecological role in continental environments. In this study, we report the microstructural features of appendicular bones of two specimens of Trialestes romeri, a non-Crocodyliformes Crocodylomorpha from the Upper Triassic from the NW of Argentina. Our goals are to infer aspects of life history (i.
View Article and Find Full Text PDFCladistics
January 2025
Museo Paleontológico Egidio Feruglio (MEF), Fontana 140, U9100GYO, Trelew, Chubut, Argentina.
Since their origin, sauropodomorphs have undergone numerous anatomical changes from small and bipedal early sauropodomorphs towards massive-bodied and quadrupedal sauropods. However, the timing of these changes in the evolution of the group is unclear. Here, we describe the appendicular skeleton of the early diverging eusauropod Bagualia alba from the late Early Jurassic of Patagonia, Argentina, and conduct a morphological disparity analysis based on a phylogenetic dataset of Sauropoda.
View Article and Find Full Text PDFInt J Gynaecol Obstet
January 2025
Guy's & St Thomas' Hospital Foundation Trust, London, UK.
The number of retractions of randomized clinical trials (RCTs) following post-publication allegations of misconduct is increasing. To address this issue, we aimed to establish an international multistakeholder consensus on post-publication integrity concerns related to RCTs. After prospective registration (https://osf.
View Article and Find Full Text PDFCancer
February 2025
Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA.
Background: The risk of recurrence in patients with small, lymph node-negative, human epidermal growth factor receptor 2 (HER2)-positive breast cancers untreated with adjuvant chemotherapy/HER2-directed therapy is uncertain. To investigate this, the authors conducted a retrospective, population-based study of chemotherapy use and breast cancer-specific survival (BCSS) among patients with stage IA HER2-positive breast cancer.
Methods: The authors analyzed Surveillance, Epidemiology, and End Results data from patients diagnosed with stage IA HER2-positive breast cancer from 2010 to 2019.
Lasers Surg Med
January 2025
Gynecology Department, Life Memorial Hospital, Medlife Hyperclinic, Bucharest, Romania.
Objectives: To assess the effect of non-ablative Er:YAG laser therapy on the symptoms and microbiological conditions of women with recurrent vulvovaginal candidiasis (RVVC).
Materials And Methods: One hundred and sixty-seven women (mean age 34.1 ± 8.
Lancet Reg Health Am
February 2025
Department of Forensic Psychiatry, University of Bern, Bern, Switzerland.
Alzheimers Dement (Amst)
January 2025
Weill Institute for Neurosciences, Department of Neurology, Memory and Aging Center University of California, San Francisco San Francisco California USA.
Introduction: Plasma amyloid beta/amyloid beta (Aβ/Aβ) and phosphorylated tau217 (p-tau217) identify individuals with primary Alzheimer's disease (AD). They may detect AD co-pathology in the setting of other primary neurodegenerative diseases, but this has not been systematically studied.
Methods: We compared the clinical, neuroimaging, and neuropathological associations of plasma Aβ/Aβ (mass spectrometry), p-tau217 (electrochemiluminescence), and neurofilament light ([NfL], single molecule array [Simoa]), as markers of AD co-pathology, in a sporadic frontotemporal dementia (FTD) cohort ( = 620).
World J Pediatr Congenit Heart Surg
January 2025
Department of Cardiology, Boston Children's Hospital, Boston, MA, USA.
Background: Outcomes following surgical repair of atrioventricular septal defect have improved over the last decades. Global mortality for repair of this defect is approximately 3.5%.
View Article and Find Full Text PDFJ Neurointerv Surg
January 2025
Neurosurgery, Medical University of South Carolina, Charleston, South Carolina, USA.
Background: The contact aspiration (CA) technique is often used to perform endovascular thrombectomy (EVT) for acute ischemic stroke (AIS); however, rescue strategies are necessary if CA fails to achieve recanalization. This study investigates the outcomes of incorporating stent retriever (SR) thrombectomy in the rescue strategy following failed CA.
Methods: EVT patients with failed CA attempts were identified from a large multicenter registry and stratified by rescue technique: CA alone or incorporating SR in the rescue strategy.
Int J Biol Macromol
January 2025
INBIAS-CONICET, Departamento de Biología Molecular, Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Río Cuarto, 5800 Córdoba, Argentina. Electronic address:
Our previous studies demonstrated that the enzyme aldose reductase (AR) is activated by its interaction with tubulin, a mechanism which can lead to the emergence of secondary diseases in diabetic patients. We also found that different compounds derived from phenolic acid (CAFs) can prevent this interaction and thus AR activation. Here, we used spectroscopic and bioinformatic techniques to explore the interaction between AR and three CAFs: 3-nitrotyrosine (NTyr), Tyrosine (Tyr), and vanillic acid (Van).
View Article and Find Full Text PDFBiochem Biophys Res Commun
January 2025
Instituto de Investigaciones Bioquímicas de Bahía Blanca CONICET-UNS, Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Bahía Blanca, Argentina. Electronic address:
Alzheimer's disease (AD) is characterized by a cholinergic deficit, prompting conventional therapies to elevate acetylcholine levels as a compensatory measure. Two main strategies involve the inhibition of acetylcholinesterase (AChE) and/or the stimulation of acetylcholine receptors (AChR). Caffeine (CFF), known as a partial agonist of nAChR and an AChE inhibitor, acts as a cholinergic enhancer.
View Article and Find Full Text PDFPLoS Pathog
January 2025
Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI-CONICET). Córdoba, Argentina.
Tissue-repair regulatory T cells (trTregs) comprise a specialized cell subset essential for tissue homeostasis and repair. While well-studied in sterile injury models, their role in infection-induced tissue damage and antimicrobial immunity is less understood. We investigated trTreg dynamics during acute Trypanosoma cruzi infection, marked by extensive tissue damage and strong CD8+ immunity.
View Article and Find Full Text PDFPLoS One
January 2025
Centro Universitario Ciudad de Mendoza, Universidad Nacional de Cuyo, Mendoza, Argentina.
In this paper, we enhance the Best-Worst Scaling (BWS) method by incorporating participants' preference uncertainty into the conventional BWS, known as case 1. In this context, respondents are tasked with making trade-offs among a set of items of interest. Applying this novel extended BWS method to a sample of Argentinian wine consumers (n = 342), we aim to a) provide a more informative elicitation of consumers' relative preferences for 16 wine attributes; b) identify the level of uncertainty with each of the attributes, exploring differences between the most and least important wine attributes influencing purchasing wine; and c) compare the results of the extended BWS with the standard BWS.
View Article and Find Full Text PDFPLoS One
January 2025
School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong, SAR, China.
Alvarezsauria is a group of morphologically distinctive, medium- to small-sized later-diverging coelurosaurian theropod dinosaurs, whose record ranges from the Late Jurassic to the Late Cretaceous. This clade had a widespread distribution in Laurasia in what is now Europe, Asia, and North America, although there are also several Cretaceous taxa from Gondwana in what is now Argentina that all belong to the family Alvarezsauridae. Although alvarezsaurid taxonomic diversity and anatomical knowledge has expanded over the last decade, alvarezsaurid internal phylogenetic relationships remain highly debated.
View Article and Find Full Text PDFPLoS One
January 2025
Facultad de Farmacia y Bioquímica, Departamento de Ciencias Biológicas, Cátedra de Biología Celular y Molecular, Universidad de Buenos Aires, Buenos Aires, Argentina.
Chronic kidney disease (CKD) is one of the leading health problems in the world. It is silent in the early stages and gradually progresses, inducing renal physiological and structural alterations. Moreover, CKD is associated with impaired life quality, increased risk for cardiovascular diseases, and reduced life expectancy.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Department of Chemistry, Yale University, 225 Prospect Street, New Haven, Connecticut 06520, United States.
Hydrogen atom transfer (HAT) reactions and their kinetic barriers Δ are important in organic and inorganic chemistry. This study examines factors that influence Δ, reporting the kinetics and thermodynamics of HAT from various ruthenium bis(acetylacetonate) pyridine-imidazole complexes to nitroxyl radicals. Across these 36 reactions, the Δ and Δ can be independently varied, with different sets of Ru complexes primarily tuning either their ps or their °s.
View Article and Find Full Text PDFDalton Trans
January 2025
CEQUINOR (UNLP, CCT-CONICET La Plata, asociado a CIC), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Blvd. 120 No. 1465, La Plata (1900), Argentina.
In this work, we evaluated the anticancer activity of compounds 1 (mononuclear) and 2 (dinuclear) copper(II) coordination compounds derived from the ligand 5-methylsalicylaldehyde 2-furoyl hydrazone (H2L) over MDA-MB-231 Triple-negative breast cancer (TNBC) cells, and compared their activities with that of a newly synthesized, protonated, dinuclear analogue of 2 (complex 3). Here, we report the synthesis of compound 3 and it has been characterized in the solid state (X-ray diffraction, FTIR) and in solution (EPR, UV-Vis, ESI) as well as its electrochemical profile. Complexes 1-3 impaired cell viability from 0.
View Article and Find Full Text PDFJAMA
January 2025
Institut Jules Bordet, l'Université Libre de Bruxelles and Hôpital Universitaire de Bruxelles, Brussels, Belgium.
Importance: Triple-negative breast cancer is an aggressive subtype with a high incidence in young patients, a high incidence in non-Hispanic Black women, and a high risk of progression to metastatic cancer, a devastating sequela with a 12- to 18-month life expectancy. Until recently, one strategy for treating early-stage triple-negative breast cancer was chemotherapy after surgery. However, it was not known whether the addition of immune therapy to postsurgery chemotherapy would be beneficial.
View Article and Find Full Text PDFJ Assist Reprod Genet
January 2025
Ovarian Physiopathology Studies Laboratory, Institute of Experimental Biology and Medicine (IByME) - CONICET, Buenos Aires, Argentina.
Purpose: This study aimed to evaluate the long-term impact of mild COVID-19 infection and COVID-19 vaccination on ovarian function in patients undergoing assisted reproductive technology (ART). Specifically, we assessed ovarian outcomes between 9 and 18 months post-infection and investigated the effects of COVID-19 vaccines (inactivated virus and adenovirus) on reproductive parameters.
Methods: The study included two objectives: (a) examining ovarian function in post-COVID-19 patients (9-18 months post-infection) compared to a control group and (b) comparing reproductive outcomes in vaccinated versus unvaccinated patients.
Protoplasma
January 2025
Laboratory of Plant Cytogenetics and Evolution, Department of Botany, Biosciences Centre, Federal University of Pernambuco, Recife, PE, 50670-901, Brazil.
Repetitive elements are the main components of many plant genomes and play a crucial role in the variation of genome size and structure, ultimately impacting species diversification and adaptation. Alstroemeriaceae exhibits species with large genomes, not attributed to polyploidy. In this study, we analysed the repetitive fraction of the genome of Bomarea edulis through low-coverage sequencing and in silico characterization, and compared it to the repeats of Alstroemeria longistaminea, a species from a sister genus that has been previously characterized.
View Article and Find Full Text PDFMol Biol Evol
January 2025
Department of Biology, Colorado State University, Fort Collins, CO, USA.
Plant mitochondrial genomes (mitogenomes) experience remarkable levels of horizontal gene transfer (HGT), including the recent discovery that orchids anciently acquired DNA from fungal mitogenomes. Thus far, however, there is no evidence that any of the genes from this interkingdom HGT are functional in orchid mitogenomes. Here, we applied a specialized sequencing approach to the orchid Corallorhiza maculata and found that some fungal-derived tRNA genes in the transferred region are transcribed, post-transcriptionally modified, and aminoacylated.
View Article and Find Full Text PDFVet Pathol
January 2025
University of California, Davis, San Bernardino, CA.
Intoxication of sheep and cattle by recently occurred in Uruguay and Argentina in association with severe drought. Although the disease was experimentally reproduced in sheep in the 1970s, there is limited information on clinical and pathologic findings of sheep experimentally intoxicated by this beetle. Here, we described the clinical, gross, and microscopic findings in 3 sheep orally dosed with (treatment group, TG) and in 2 control sheep (control group, CG) dosed with distilled water.
View Article and Find Full Text PDFJ Exp Biol
January 2025
Grupo de Ecología Fisiológica y del Comportamiento. Instituto de Investigaciones Marinas y Costeras (IIMyC). CONICET - Universidad Nacional de Mar del Plata, Argentina.
Animal thermoregulation may have significant costs and compete directly or indirectly with other energetically demanding processes, such as immune function. Although the subterranean environment is characterized by thermally-stable conditions, small changes in ambient temperature could be critical in shaping immunity. However, little is known about the effects of ambient temperature, in naturally varying ranges, on immunity of wild species.
View Article and Find Full Text PDFJ Clin Orthop Trauma
March 2025
Hospital Britanico de Buenos Aires, Perdriel 74, C1280AEB, Argentina.
Arthroscopic ligament repair has gained popularity as a minimally invasive alternative for addressing ankle instability, due to its minimally invasive nature, which offers significant advantages over traditional open procedures. These benefits include smaller incisions, reduced soft tissue dissection, and the ability to concurrently manage intra-articular pathology, contributing to its popularity among surgeons and patients alike. Despite these advantages, the procedure presents a range of technical challenges and potential complications that can impact patient outcomes.
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