Publications by authors named "Martinez-Perez D"

Background: Anti-PD-1-based immunotherapy has improved outcomes in stage IIB to IV resected melanoma patients in clinical trials. However, little is known about real-world outcomes, prognostic factors and patterns of relapse.

Methods: This is a retrospective multicenter observational study including patients with resected melanoma treated with subsequent anti-PD-1-based adjuvant immunotherapy.

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Background: The Colorectal Cancer Subtyping Consortium established four Consensus Molecular Subtypes (CMS) in colorectal cancer: CMS1 (microsatellite-instability [MSI], Immune), CMS2 (Canonical, epithelial), CMS3 (Metabolic), and CMS4 (Mesenchymal). However, only MSI tumour patients have seen a change in their disease management in clinical practice. This study aims to characterise the proteome of colon cancer CMS and broaden CMS's clinical utility.

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Background: The rising incidence of colorectal cancer (CRC) among young patients is alarming. We aim to characterize the clinico-pathological features and outcomes of patients with early-onset CRC (EOCRC), as well as the impacts of COVID-19 pandemic.

Methods: We included all patients with pathologically confirmed diagnoses of CRC at Hospital Universitario La Paz from October 2016 to December 2021.

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causes a wide range of infections, including wound infections. Multidrug-resistant is a major healthcare concern and the development of novel treatments against these infections is needed. Fosmidomycin is a repurposed antimalarial drug targeting the non-mevalonate pathway, and several derivatives show activity toward .

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Introduction: Colombia has 50,912,429 inhabitants, but only 50-70% of the population can effectively access health care services. The emergency room (ER) is a main contributor to the in-hospital care system since up to half of the admissions come through it. Telemedicine has become a tool to facilitate effective access to health care services, improve the timeliness of care, reduce diagnostic variability, and reduce costs associated with health.

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Implant-associated infections are not easy to diagnose and very difficult to treat, due to the ability of major pathogens, such as to develop biofilms and escape the immune response and antibiotic treatment. We, therefore, aimed to develop a 3D-printed dual rifampicin (Rif)- and vancomycin (Van)-loaded polylactic- co-glycolic acid (PLGA) nanoparticles (NPs) delivery system based on hydrogels made of gelatin methacrylate (GelMA). The release of Rif and Van from NPs manufactured from different PLGA molecular weights was studied in phosphate-buffered saline for 21 days.

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Colorectal cancer (CRC) is a molecular and clinically heterogeneous disease. In 2015, the Colorectal Cancer Subtyping Consortium classified CRC into four consensus molecular subtypes (CMS), but these CMS have had little impact on clinical practice. The purpose of this study is to deepen the molecular characterization of CRC.

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Background: The prognosis of patients with stage II and stage III colon cancer is heterogeneous. Clinical and pathological characteristics, such as tumor budding, may help to further refine the recurrence risk. Methods: We included all the patients with localized colon cancer at Hospital Universitario La Paz from October 2016 to October 2021.

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Purpose: Despite the call to increase the number of radiation oncologists in Latin America, the quality, similarity, and number of residency training programs are unknown. We seek to describe the current state of residency programs in radiation oncology in Latin America.

Methods And Materials: Latin American Residents in Radiation Oncology performed a cross-sectional analysis of universities and training centers for radiation oncologists in Latin America.

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Uveal melanoma is a rare neoplasm with poor prognosis in the metastatic setting. Unlike cutaneous melanoma, treatment with kinase inhibitors or immune checkpoint inhibitors is not effective. Glycoprotein 100 (Gp-100) is a protein highly expressed in melanocytes and melanoma that has recently been effectively targeted by tebentafusp, a first-in-class bispecific protein of the immune-mobilizing monoclonal T cell receptors against cancer (ImmTACs) family.

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Background: Second-line (2L) treatments for advanced pancreatic ductal adenocarcinoma (PDAC) achieve a modest benefit at the expense of potential toxicity. In the absence of predictive factors of response, the identification of prognostic factors could help in the therapeutic decisions-making. The purpose of this study was to assess the prognostic factors associated with shorter survival in patients with advanced PDAC who received 2L treatment.

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Purpose: We aimed to elucidate the influence on analgesic effect of genetic polymorphisms in enzymes responsible for biotransformation of tramadol and ibuprofen or other possible genes involved in their mechanism of action.

Methods: The study population comprised 118 patients from a multicenter, randomized, double-blind, placebo-controlled, Phase III clinical trial that assessed the analgesic efficacy and tolerability of a single dose of ibuprofen (arginine)/tramadol 400/37.5 mg compared with ibuprofen arginine 400 mg alone, tramadol 50 mg alone, and placebo in patients with moderate to severe pain after dental surgery.

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Objective: To describe the experience of physicians and patients in the Telepsychiatry programme at the University of Antioquia's Faculty of Medicine in the first 12 months after its implementation in eight towns across Antioquia.

Methodology: A descriptive study involving the evaluation of 111 patients during the programme's first year. An instrument was designed to evaluate patients' satisfaction and the Technology Acceptance Model (TAM) was used to evaluate the health professionals' satisfaction.

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Background: Cancer and cancer therapies have been associated with an increased incidence of venous thromboembolic events (VTE). However, the incidence of VTE in patients on immunotherapy has not been well characterized. The aim of this study was to assess the incidence of VTE in cancer patients receiving immunotherapy and ascertain its prognostic utility.

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Objective: To determine the association between delayed diagnosis and advanced clinical stage breast cancer, and to explore the factors that influence this delay.

Methods: Cross-sectional study of women over 18 years of age with breast cancer who attended 4 oncology centers in Medellín, Colombia, in 2017. The "Breast Cancer Delay Questionnaire" which includes sociodemographic and clinical variables as well as time intervals was used.

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Purpose: The aim was to estimate seroprevalence and prevalence of hepatitis C virus (HCV) infection in a small health area of the Valencian Community, Spain.

Patients And Methods: This is a descriptive cross-sectional study aimed at estimation of HCV infection prevalence in the whole adult population (25-70 years old), that is, a pilot study for an eventual population-based screening program.

Results: A total of 5849 participants aged 25-70 years (51% male) were invited to participate by regular mail.

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The original version of this article contained mistakes, and the authors would like to publish this erratum. The "Acknowledgement" section was not included in the aforementioned manuscript.

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Epigallocatechin-3-gallate (EGCG) is a polyhydroxyphenol constituent of green tea (e.g., Camellia sinensis) with known antioxidant properties.

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Rheumatoid arthritis (RA) is a chronic, inflammatory, progressive disease characterized by inflammation of the synovial tissue. It results in the severe functional deterioration of the joints involved and the incapacity to work. Our main aim is to determine the characteristics of the current health-care models used in treating rheumatoid arthritis patients in Latin America.

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Radiographs are routinely used by orthodontists for the planning of treatment for their patients and they can, in some cases, play a decisive role in the early diagnosis of some unexpected medical or surgical disorders. This report presents the case of a substantial dilatation of the upper airway in a 10-year-old girl, which was attributed to a forced Valsalva manoeuvre. The diagnosis was confirmed upon repetition of the teleradiograph with the mouth open.

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The simultaneous encapsulation of a coupled uricase-peroxidase system and amplex red in a sol-gel matrix allows one to obtain a reagent-less and ready-to-use fluorescent biosensor for the accurate detection of uric acid in highly diluted biological fluids. The detection limit of the prepared biosensor was found to be 20 nM and was linear up to 1 microM. The high sensitivity found for the biosensor permitted a reliable determination of uric acid concentrations in the presence of interfering species (e.

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A rehabilitation device was designed and used before a reconstructive orthognathic procedure in an adult patient with a severe facial asymmetry. The asymmetry developed as a result of a left hemimandibulectomy in childhood. With this prototype device, the remaining hemimandible was gradually brought into its natural position and dynamics in order to accommodate a graft.

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This is an assessment of one surgeon's 15-year experience (1981-1995) using the Millard rotation-advancement principle for repair of unilateral complete cleft lip and nasal deformity. All infants underwent a prior labio-nasal adhesion. Since 1991, dentofacial orthopedics with a pin-retained (Latham) appliance was used for infants with a cleft of the lip and palate.

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