699 results match your criteria: "Institute of Biomedicine of Seville-IBIS[Affiliation]"

PEROXYNITRITE IS INVOLVED IN THE MITOCHONDRIAL DYSFUNCTION INDUCED BY SORAFENIB IN LIVER CANCER CELLS.

Free Radic Biol Med

December 2024

Institute of Biomedicine of Seville (IBiS), Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain; Department of Medical Physiology and Biophysics, University of Seville, Seville, Spain; Biomedical Research Center for Hepatic and Digestive Diseases (CIBERehd), Madrid, Spain. Electronic address:

Background: Sorafenib is a tyrosine kinase inhibitor (TKI) that belongs to the landscape of treatments for advanced stages of hepatocellular carcinoma (HCC). The induction of cell death and cell cycle arrest by Sorafenib has been associated with mitochondrial dysfunction in liver cancer cells. Our research aim was to decipher underlying oxidative and nitrosative stress induced by Sorafenib leading to mitochondrial dysfunction in liver cancer cells.

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SLAMF7 defines subsets of human effector CD8 T cells.

Sci Rep

December 2024

Singapore Immunology Network (SIgN), Agency for Science Technology and Research (A*STAR), Immunos Building, 8A Biomedical Grove, Biopolis, Republic of Singapore.

Long-term control of viral replication relies on the efficient differentiation of memory T cells into effector T cells during secondary immune responses. Recent findings have identified T cell precursors for both memory and exhausted T cells, suggesting the existence of progenitor-like effector T cells. These cells can persist without antigenic challenge but expand and acquire effector functions upon recall immune responses.

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Unlabelled: Nursing students' experiences about clinical practice tutoring in a public university from southern Spain and at its two attached educational centres were analysed.

Methods: A cross-sectional observational study was carried out. The population was comprised of nursing students attending their fourth year of university during the 2023/2024 academic period, with a final sample of 179 subjects.

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Background: Human adamantinomatous craniopharyngioma (ACP) is a brain tumor that originates at the base of the skull and shows aggressive local behavior, invading sensitive structures such as the optic pathways and hypothalamus. The conventional treatment of the tumor has been surgery and radiotherapy with the consequent development of serious sequelae. It is well known that Substance P (SP) peptide and Neurokinin-1 receptor (NK-1R) are involved in inflammation and cancer progression and its blockage with NK-1R antagonists has been shown to effectively counteract tumor development in preclinical trials.

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The pipeline for new drugs against multidrug-resistant remains limited, highlighting the urgent need for innovative treatments. New strategies, such as membrane-targeting molecules acting as adjuvants, aim to enhance antibiotic effectiveness and combat resistance. RW01, a cyclic peptide with low antimicrobial activity, was selected as an adjuvant to enhance drug efficacy through membrane permeabilization.

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Background/objectives: The current trend in maternal health is to foster more natural and less medicalized therapies, with increasing interest in complementary therapies. This study has analyzed the benefits of complementary therapies during pregnancy, delivery and the postpartum period.

Methods: A paired systematic review was carried out (PROSPERO: CRD42024543981).

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Objective: To estimate the cost and healthcare resource utilization (HRU) associated with the prevalence of comorbidities in people living with HIV (PLWH) in a Spanish cohort over ten years.

Methods: A cohort study carried out at the HIV outpatient clinic of the University Hospital Virgen del Rocío based on data collected during 2007-2016. PLWH with at least one follow-up visit were included.

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The Spanish Society of Pneumology and Thoracic Surgery (SEPAR) and the Spanish Society of Infectious Diseases and Clinical Microbiology (SEIMC) have developed together Clinical Practice Guidelines (GPC) on the management of people affected by tuberculosis (TB) resistant to drugs with activity against Mycobacterium tuberculosis. These clinical practice guidelines include the latest updates of the SEPAR regulations for the diagnosis and treatment of drug-resistant TB from 2017 to 2020 as the starting point. The methodology included asking relevant clinical questions based on PICO methodology, a literature search focusing on each question, and a systematic and comprehensive evaluation of the evidence, with a summary of this evidence for each question.

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Introduction: Hepatocellular carcinoma (HCC) is the main hepatic primary malignancy. Patients with advanced HCC receiving the recommended therapies have a poor outcome. In different settings, nanotechnology has gained attraction as a potential alternative strategy for improving therapeutic effectiveness.

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Article Synopsis
  • Metabolic liver disease is increasingly linked to hepatocellular carcinoma (HCC), but the molecular mechanisms remain poorly understood; this study focuses on DNA methylation's role in HCC associated with metabolic issues.
  • The research involved 272 HCC patients and 316 control subjects, revealing 55 DNA methylation markers that effectively distinguished HCC cases from controls, achieving an AUC of 0.79 for accuracy.
  • Combining these markers with demographic data improved sensitivity and specificity for identifying patients at risk for metabolic HCC.
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Multiple myeloma (MM) remains incurable, with poor outcomes in heavily pre-treated patients with plasmacytomas. Chimeric antigen receptor (CAR) T-cell therapy has emerged as a promising treatment option; however, outcomes after such therapy in patients with soft-tissue plasmacytomas and other bone lesions remain poorly understood. Data regarding these parameters is scarce within the specific context of CAR T-cell treatment.

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Introduction: Hepatic encephalopathy (HE) presents a complex pathophysiology, creating multiple potential treatment avenues. This review covers current and emerging treatments for HE.

Areas Covered: Standard therapies, including non-absorbable disaccharides and rifaximin, are widely used but show inconsistent efficacy.

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Unlabelled: Clinical Simulation improves results in the students' learning tests and allows for preserving acquired knowledge for longer periods of time, promoting more significant learning. This study was conducted to analyze Nursing students' satisfaction with Clinical Simulation in three centres attached to a university from southern Spain.

Methods: A quantitative, non-experimental and cross-sectional descriptive study was carried out.

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Aztreonam/avibactam (ATM/AVI) has been recently approved drug for clinical use in the European Union. The aim of this study was to develop and evaluate a novel selective medium for the isolation of ATM/AVI-resistant strains (Super ATM/AVI selective medium) to help to control their spread. Minimum inhibitory concentrations of ATM/AVI were determined using the broth microdilution method for 77 Gram-negative isolates, including 62 Enterobacterales and 15 .

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Background: COVID-19 vaccination has become a pivotal global strategy in managing the pandemic. Despite COVID-19 no longer being classified as a Public Health Emergency of International Concern, the virus continues affecting people worldwide. This study aimed to evaluate risk factors and vaccine effectiveness on COVID-19-related hospital admissions, intensive care unit (ICU) admission and mortality within the Andalusian population throughout the pandemic.

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Flow cytometry analysis of myeloid derived suppressor cells using 6 color labeling.

Methods Cell Biol

November 2024

Clinical Biochemistry Service, Hospital Universitario Virgen Macarena, University of Seville, Seville, Spain; Department of Medical Biochemistry and Molecular Biology and Immunology, Medical School, Virgen Macarena University Hospital, University of Seville, Seville, Spain; Institute of Biomedicine of Seville (IBiS), Hospital Universitario Virgen del Rocío, CSIC, Universidad de Sevilla, Seville, Spain. Electronic address:

Myeloid-derived suppressor cells (MDSCs) encompass a diverse population of immature myeloid cells categorized into granulocytic and monocytic groups. These cells exert immune-suppressive functions within the tumor microenvironment, primarily influenced by cytokines and tumor-associated factors. Research has consistently linked elevated MDSC levels to unfavorable cancer prognosis and poor responses to immunotherapies.

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Background: Multiple studies have demonstrated the utility of sonication to improve culture yield in patients with cardiovascular implantable electronic device (CIED) infections.

Objective: To analyze the usefulness of sonication in the microbiological diagnosis of CIED infections in comparison with traditional cultures.

Methods: Systematic database searches were performed to identify studies that provided enough data concerning both sensitivity and specificity of traditional (non-sonicated) and sonicated cultures from CIED samples.

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Current practice of screening and antimicrobial prophylaxis to prevent Gram-negative bacterial infection in high-risk haematology patients: results from a pan-European survey.

Ther Adv Infect Dis

October 2024

Institute of Translational Research, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.

Article Synopsis
  • - The study examines the use of antimicrobial prophylaxis (AMP) in haematological patients, particularly those at high risk for bacterial infections due to prolonged neutropenia after chemotherapy, amidst the rise of multi-drug resistant Gram-negative bacteria (MDR-GNB).
  • - A survey conducted with 120 haematology centers across 28 European countries revealed that most centers (86.7%) routinely screen for MDR-GNB, with a significant number (39.2%) using fluoroquinolones for prophylaxis.
  • - While bloodstream infections (BSI) rates were slightly lower in patients receiving AMP, the overall increase in MDR-GNB infections highlights the need for improved antimicrobial stewardship and tailored prophylactic strategies.
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We evaluated the efficacy of the adoptive transfer of memory B, CD4+, and CD8+ T lymphocytes compared with sulbactam and tigecycline in an experimental murine pneumonia model by two multidrug-resistant strains, colistin-susceptible AbCS01 and colistin-resistant AbCR17. Pharmacodynamically optimized antimicrobial dosages were administered for 72 h, and intravenous administration of 2 × 10 of each of the memory cells in a single dose 30 min post-infection. Bacterial lung and blood counts and mortality rates were analyzed.

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Editorial: Microglia in neurodegenerative diseases.

Front Cell Neurosci

September 2024

Institute of Biomedicine of Seville (IBiS), Hospital Universitario Virgen del Rocío, CSIC, University de Seville, Seville, Spain.

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The current treatments to restore skeletal muscle defects present several injuries. The creation of scaffolds and implant that allow the regeneration of this tissue is a solution that is reaching the researchers' interest. To achieve this, electrospinning is a useful technique to manufacture scaffolds with nanofibers with different orientation.

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Article Synopsis
  • The study investigates the genetic factors linked to severe COVID-19, specifically focusing on hospitalized cases in admixed Americans.
  • Researchers conducted the largest genome-wide association study (GWAS) for COVID-19 hospitalization in this population, identifying four significant genetic associations, including two novel loci found in Latin Americans.
  • The findings highlight the importance of including diverse populations in genomic research, aiming to improve understanding of genetic risks associated with COVID-19 across different ethnic groups.
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Background: Heart failure (HF) represents a frequent cause of hospital admission, with fluid overload directly contributing to decompensations. Bioimpedance (BI), a physical parameter linked to tissue hydration status, holds promise in monitoring congestion and improving prognosis. This systematic review aimed to assess the clinical relevance of BI-based wearable devices for HF fluid monitoring.

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Heart-failure (HF) is a severe medical condition. Physicians need new tools to monitor the health status of their HF patients outside the hospital or medical supervision areas, to better know the evolution of their patients' main biomarker values, necessary to evaluate their health status. Bioimpedance (BI) represents a good technology for sensing physiological variables and processes on the human body.

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Malnutrition is common in chronic obstructive pulmonary disease (COPD) patients and is associated with worse lung function and greater severity. This review by the Andalusian Group for Nutrition Reflection and Investigation (GARIN) addresses the nutritional management of adult COPD patients, focusing on Morphofunctional Nutritional Assessment and intervention in clinical practice. A systematic literature search was performed using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) methodology, followed by critical appraisal based on Scottish Intercollegiate Guidelines Network (SIGN) guidelines.

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