5,655 results match your criteria: "" University of Buenos Aires[Affiliation]"

Objectives: Lipoprotein(a) [Lp(a)] is a significant risk factor for cardiovascular disease, yet it is often overlooked in routine clinical assessments. As a primarily genetically determined risk factor, the traditional recommendation is to assess its level once in a lifetime, as the variability of Lp(a) over time is considered to be minimal. This study aims to evaluate the potential variability of Lp(a) in clinically stable patients and investigate factors contributing to the lack of stable levels.

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The adult hippocampus generates new granule cells (aGCs) with functional capabilities that convey unique forms of plasticity to the preexisting circuits. While early differentiation of adult radial glia-like cells (RGLs) has been studied extensively, the molecular mechanisms guiding the maturation of postmitotic neurons remain unknown. Here, we used a precise birthdating strategy to study aGC differentiation using single-nuclei RNA sequencing.

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Objective: Guided Bone Regeneration (GBR) is a dental surgical procedure that uses barrier membranes to prevent soft tissue invasion and conduct new bone growth. This study aimed to define a Prognosis Recovery score (PR score) to objectively classify post-surgery responders from non-responder patients who underwent GBR using Cone Beam Computed Tomography (CBCT).

Methods: This prospective-observational-longitudinal-cohort study recruited 250 individuals who were assigned to: Conventional-Apical-Surgery (CAS, n = 39), Apical-Surgery using human fascia lata Membrane placement (ASM, n = 42), and Apical-Surgery using human fascia lata Membrane placement and lyophilized allograft Bone powder (ASMB, n = 39); and Apical-Surgery using collagen membrane Porcine origin and Bovine Bone-matrix (ASPBB, n = 130), an independent external validation cohort.

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Background: The LGBTQI + community encounters distinct healthcare challenges due to discrimination and inadequate understanding of their needs. Dermatologists play a crucial role in addressing this by fostering inclusiveness, recognizing individual concerns, and adopting tailored approaches, thereby promoting a more equitable healthcare system.

Objective: To address the need for an inclusive healthcare space, the authors established the first dermatological practice exclusively for transgender and non-binary patients.

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Advancing Neurosurgical Skills: A Comparative Study of Training Models for Intra-Extracranial Cerebral Bypass.

World Neurosurg

September 2024

Neurosurgery. Petrona V. de Cordero Hospital, San Fernando, Buenos Aires, Argentina; Microsurgical Neuroanatomy Laboratory, Second Chair of Anatomy, University of Buenos Aires, Buenos Aires, Argentina.

Background: Training in anastomosis is fundamental in neurosurgery due to the precision and dexterity required. Biological models, although realistic, present limitations such as availability, ethical concerns, and the risk of biological contamination. Synthetic models, on the other hand, offer durability and standardized conditions, although they sometimes lack anatomical realism.

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Brain clocks, which quantify discrepancies between brain age and chronological age, hold promise for understanding brain health and disease. However, the impact of multimodal diversity (geographical, socioeconomic, sociodemographic, sex, neurodegeneration) on the brain age gap (BAG) is unknown. Here, we analyzed datasets from 5,306 participants across 15 countries (7 Latin American countries -LAC, 8 non-LAC).

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Global needs for nitrogen fertilizer to improve wheat yield under climate change.

Nat Plants

July 2024

Technical University of Munich, Department of Life Science Engineering, Digital Agriculture, HEF World Agricultural Systems Center, Freising, Germany.

Article Synopsis
  • * Research using advanced wheat simulation models indicates improved wheat genotypes can boost yields by 16% using current nitrogen fertilizer levels.
  • * To reach a potential 52% increase in yield under severe climate change conditions, nitrogen fertilizer use would need to quadruple, which could exacerbate environmental impacts, highlighting the need for better nitrogen management.
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Introduction: The study aimed to assess the psychometric quality of the Peer Mental Health Stigmatization Scale - Revised (PMHSS-R), by examining its factorial structure among young adults in Ireland and Argentina.

Method: A total of 429 participants aged between 18 and 25 years old were recruited (n = 187 Ireland, n = 242 Argentina). The PMHSS-R was completed by Irish participants and was translated, pilot-studied, and subsequently completed by Argentinian participants.

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Advanced repair of recurrent and low-large hysterotomy defects using a myometrial glide flap.

J Matern Fetal Neonatal Med

December 2024

OB-GYN Department, Fundacion Valle de Lili, Cali, Valle del Cauca, Colombia.

Background: The resolution of factors linked to the recurrence of cesarean section defects can be accomplished through a comprehensive technique that effectively addresses the dehiscent area, eliminates associated intraluminal fibrosis, and establishes a vascularized anterior wall by creating a sliding myometrial flap.

Objective: Propose a comprehensive surgical repair for recurrent and large low hysterotomy defects in women seeking pregnancy or recurrent spotting.

Study Design: A retrospective cohort analysis included 54 patients aged 25-41 with recurrent large cesarean scar defects treated at Otamendi, CEMIC, and Valle de Lili hospitals.

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Engagement in Youth Athletes as a Positive Experience in Sport: Implications of Gender, Age, and Competitive Level.

Eur J Investig Health Psychol Educ

June 2024

Department of Social Psychology, Faculty of Psychology and Speech Therapy, University of Valencia, 46010 Valencia, Spain.

The aim of this study was to examine athlete engagement and its relationships with indicators of the quality of the athlete's sport experience, exploring potential differences according to gender, age, and competitive level. Furthermore, this study validated the Athlete Engagement Questionnaire (AEQ) in young athletes and confirmed its factor structure. A total of 1188 athletes (43.

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Anaerobic digestion of organic waste into methane and carbon dioxide (biogas) is carried out by complex microbial communities. Here, we use full-length 16S rRNA gene sequencing of 285 full-scale anaerobic digesters (ADs) to expand our knowledge about diversity and function of the bacteria and archaea in ADs worldwide. The sequences are processed into full-length 16S rRNA amplicon sequence variants (FL-ASVs) and are used to expand the MiDAS 4 database for bacteria and archaea in wastewater treatment systems, creating MiDAS 5.

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Comparison of Patient Health Questionnaire-9, Edinburgh Postnatal Depression Scale and Hospital Anxiety and Depression - Depression subscale scores by administration mode: An individual participant data differential item functioning meta-analysis.

J Affect Disord

September 2024

Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, Québec, Canada; Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montréal, Québec, Canada; Department of Medicine, McGill University, Montréal, Québec, Canada; Department of Psychiatry, McGill University, Montréal, Québec, Canada; Department of Psychology, McGill University, Montréal, Québec, Canada; Biomedical Ethics Unit, McGill University, Montréal, Québec, Canada.

Article Synopsis
  • * Statistically significant differential item functioning (DIF) was found for most questionnaire items, but this had minimal impact on total scores.
  • * Researchers and clinicians can choose the administration method based on what works best for patients, considering preferences, feasibility, or cost, as score differences were negligible.
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Human chorionic gonadotropin regulates cytokine production by lymphocytes from patients with multiple sclerosis.

J Reprod Immunol

August 2024

Center for Pharmacological and Botanical Studies (CEFYBO-UBA-CONICET), Graduate School of Medicine, University of Buenos Aires, 2155 Paraguay St. 16th Floor, Ciudad Autónoma de Buenos Aires C1121ABG, Argentina; Centro Integrativo de Biología Y Química Aplicada, Universidad Bernardo O'Higgins, Santiago 8307993, Chile. Electronic address:

Multiple sclerosis (MS) is a chronic inflammatory demyelinating disease of the central nervous system (CNS) that primarily affects young adults, predominantly females. This was partially attributed to sex differences in immunity, which are influenced by changes in sex hormones occurring during women's life, among other factors. Furthermore, MS patients experience significant improvement in their symptoms during pregnancy when levels of female sex-hormones significantly increase.

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Background: After surgical resection of pancreatic ductal adenocarcinoma (PDAC), patients are predominantly treated with adjuvant chemotherapy, commonly consisting of gemcitabine (GEM)-based regimens or the modified FOLFIRINOX (mFFX) regimen. While mFFX regimen has been shown to be more effective than GEM-based regimens, it is also associated with higher toxicity. Current treatment decisions are based on patient performance status rather than on the molecular characteristics of the tumor.

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Ironing out the Links: Ferroptosis in epilepsy and SUDEP.

Epilepsy Behav

August 2024

University of Buenos Aires, Faculty of Pharmacy and Biochemistry, Institute of Phisiopatology and Clinical Biochemistry (INFIBIOC), Applied Neurobiology Lab, Buenos Aires, Argentina. Electronic address:

Iron is a crucial element for almost all organisms because it plays a vital role in oxygen transport, enzymatic processes, and energy generation due to its electron transfer capabilities. However, its dysregulation can lead to a form of programmed cell death known as ferroptosis, which is characterized by cellular iron accumulation, reactive oxygen species (ROS) production, and unrestricted lipid peroxidation. Both iron and ferroptosis have been identified as key players in the pathogenesis of various neurodegenerative diseases.

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Rational: Critically ill surgical patients pose one of the greatest challenges in achieving nutritional goals. Several published papers have demonstrated clear benefits when nutrition support (NS) is managed by a multidisciplinary nutrition support team (NST). We hypothesized that implementing a NST in a surgical intensive care unit (ICU) would increase the number of patients achieving their nutritional goals.

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Three-Dimensional Printing in Breast Reconstruction: Current and Promising Applications.

J Clin Med

June 2024

Plastic Surgery Department, Hospital Italiano de Buenos Aires, University of Buenos Aires Medical School, Hospital Italiano de Buenos Aires University Institute (IUHIBA), Buenos Aires C1053ABH, Argentina.

Three-dimensional (3D) printing is dramatically improving breast reconstruction by offering customized and precise interventions at various stages of the surgical process. In preoperative planning, 3D imaging techniques, such as computer-aided design, allow the creation of detailed breast models for surgical simulation, optimizing surgical outcomes and reducing complications. During surgery, 3D printing makes it possible to customize implants and precisely shape autologous tissue flaps with customized molds and scaffolds.

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Article Synopsis
  • - Crovalimab is a new treatment for paroxysmal nocturnal hemoglobinuria that allows for easy self-administration every four weeks and is shown to be as effective as the existing treatment eculizumab in maintaining hemolysis control and avoiding transfusions.
  • - The COMMODORE 2 trial involved 204 patients and compared the effects of crovalimab with eculizumab over 24 weeks, finding similar outcomes for key health measures, including hemoglobin stabilization and fatigue reduction.
  • - Both treatments were safe, with no cases of meningococcal infections reported, and many patients preferred crovalimab after switching from eculizumab, showcasing its favorable benefit-risk profile.
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Article Synopsis
  • * A thorough review of literature from 2017 to October 2023 was conducted to form evidence-based recommendations, with specific criteria used to evaluate the studies.
  • * The resulting guidelines provide best practices for safely improving neurostimulation outcomes, intended to aid healthcare professionals in making informed decisions.
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International expert consensus recommendations for the use of dermocosmetics in acne.

J Eur Acad Dermatol Venereol

June 2024

Nantes Université, INSERM, CNRS, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302/EMR6001, Nantes, France.

Background: A wide variety of dermocosmetics (products with both active skincare and cosmetic activity) are available for the management of acne vulgaris. These products are important because they may be the first line of approach for patients desiring to self-treat and they can also have beneficial effects-reducing lesion counts and improving global acne severity. When used in conjunction with medical therapy, dermocosmetics can improve tolerability and enhance results.

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Effects of COVID-19 Pandemic in Patients with a Previous Phrenic Nerve Transfer for a Traumatic Brachial Plexus Palsy.

J Brachial Plex Peripher Nerve Inj

January 2024

Division of Reconstructive Microsurgery, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan.

 With the advent of the coronavirus disease 2019 (COVID-19) pandemic, some doubts have been raised regarding the potential respiratory problems that patients who previously underwent a phrenic nerve transfer could have.  To analyze the effects of the coronavirus infection on two populations, one from Argentina and another from Taiwan. Specific objectives were: (1) to identify the rate of COVID in patients with a history of phrenic nerve transfer for treatment of palsy; (2) to identify the overall symptom profile; (3) to compare Argentinian versus Taiwanese populations; and (4) to determine if any phrenic nerve transfer patients are at particular risk of more severe COVID.

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Introduction: Fostemsavir is a gp120-directed attachment inhibitor approved for heavily treatment-experienced (HTE) adults with multidrug-resistant HIV-1. We provide detailed week 240 safety results from the BRIGHTE study and evaluate the impact of immune recovery on safety outcomes.

Methods: The phase 3 BRIGHTE trial is ongoing; data for this analysis were collected from the first participant's first visit (February 23, 2015) through the last participant's last visit for week 240 (March 22, 2021).

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Article Synopsis
  • The left supramarginal gyrus (LSMG) is linked to attention and memory, as shown in a study analyzing 142 verbal recall experiments in epilepsy patients with LSMG electrode implants.
  • A specific subset of 14 patients had notable results when using convolutional neural networks (CNNs) to identify recalled words, achieving an area under the receiver operating curve (AUROC) between 60-90%.
  • The findings suggest that high-gamma and beta bursts in the LSMG could serve as indicators of verbal memory performance and state, based on distinct neural activity patterns and electrode placements.
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