Publications by authors named "Barcena C"

Article Synopsis
  • * A study involving 61 TLBCL patients analyzed their genetic characteristics compared to nodal DLBCL and primary CNS large B-cell lymphomas; findings indicated that TLBCL has fewer copy number changes but more somatic mutations than nodal DLBCL.
  • * The results highlight a unique genetic profile for TLBCL, with most cases classified as MCD, indicating genetic diversity, suggesting that this lymphoma type warrants targeted treatment strategies due to its distinct biology.
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Article Synopsis
  • Diagnosis of primary diffuse large B-cell lymphoma of the central nervous system (PCNSL) is often difficult and delayed due to low sensitivity of standard tests like MRI, CSF cytology, and even brain biopsies.
  • In three reported cases, novel CSF biomarkers, including the MYD88 L265P mutation and specific cytokine levels, helped suggest the diagnosis of PCNSL, which was later confirmed by biopsy or autopsy.
  • The study highlights five key CSF biomarkers (IL-10, IL-10/IL-6 ratio, CXCL13, MYD88 mutation, and monoclonal immunoglobulin rearrangements) that can improve diagnostic accuracy for PCNSL.
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The expanding presence of red foxes () in urban and suburban regions could potentially lead to increased instances of human aggression towards this species. We studied 10 deceased red foxes that were submitted by law enforcement agencies in the metropolitan area of Madrid in 2014-2022 because of suspected abuse. Forensic autopsies were performed to establish the cause and manner of death.

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The current World Health Organization (WHO) classification of central nervous system (CNS) tumours includes several neoplasms that, while occurring in this location, are more frequently seen extracranially. These include mesenchymal, melanocytic and haematolymphoid neoplasms, as well as metastases. A few of these entities are exclusive of the CNS and have no extracranial counterpart.

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Despite common histogenesis meningiomas have a wide morphologic spectrum, and the World Health Organization (WHO) recognizes 15 subtypes. They are the most common brain tumour in adults and typically have an extra-axial location. Although there have been important advances in the molecular biology of meningiomas its diagnosis is based on histopathologic features.

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The myeloid neoplasms encompass acute myeloid leukemia, myelodysplastic syndromes and myeloproliferative neoplasms. Most cases arise from the shared ancestor of clonal hematopoiesis (CH). Here we analyze data from 454,340 UK Biobank participants, of whom 1,808 developed a myeloid neoplasm 0-15 years after recruitment.

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Germ line variants in the DDX41 gene have been linked to myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML) development. However, the risks associated with different variants remain unknown, as do the basis of their leukemogenic properties, impact on steady-state hematopoiesis, and links to other cancers. Here, we investigate the frequency and significance of DDX41 variants in 454 792 United Kingdom Biobank (UKB) participants and identify 452 unique nonsynonymous DNA variants in 3538 (1/129) individuals.

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Undifferentiated anaplastic thyroid tumours are uncommon and constitute a diagnostic challenge on fine needle aspiration. A case showing large, single neoplastic cells in a background of Hashimoto's disease is presented.

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Bone marrow (BM) cellularity assessment is a crucial step in the evaluation of BM trephine biopsies for hematologic and nonhematologic disorders. Clinical assessment is based on a semiquantitative visual estimation of the hematopoietic and adipocytic components by hematopathologists, which does not provide quantitative information on other stromal compartments. In this study, we developed and validated MarrowQuant 2.

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In the present study, we screened 84 Follicular Lymphoma patients for somatic mutations suitable as liquid biopsy MRD biomarkers using a targeted next-generation sequencing (NGS) panel. We found trackable mutations in 95% of the lymph node samples and 80% of the liquid biopsy baseline samples. Then, we used an ultra-deep sequencing approach with 2 · 10 sensitivity (LiqBio-MRD) to track those mutations on 151 follow-up liquid biopsy samples from 54 treated patients.

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Diffuse large B-cell lymphoma (DLBCL), the most frequent non-Hodgkin's lymphoma subtype, is characterized by strong biological, morphological, and clinical heterogeneity, but patients are treated with immunochemotherapy in a relatively homogeneous way. Here, we have used a customized NanoString platform to analyze a series of 197 homogeneously treated DLBCL cases. The platform includes the most relevant genes or signatures known to be useful for predicting response to R-CHOP (Rituximab, Cyclophosphamide, Doxorubicin, Vincristine, and Prednisone) in DLBCL cases.

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Clonal hematopoiesis (CH), the clonal expansion of a blood stem cell and its progeny driven by somatic driver mutations, affects over a third of people, yet remains poorly understood. Here we analyze genetic data from 200,453 UK Biobank participants to map the landscape of inherited predisposition to CH, increasing the number of germline associations with CH in European-ancestry populations from 4 to 14. Genes at new loci implicate DNA damage repair (PARP1, ATM, CHEK2), hematopoietic stem cell migration/homing (CD164) and myeloid oncogenesis (SETBP1).

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COL1A1-PDGFB gene fusion uterine sarcoma is a recently described entity which shows some overlapping features with dermatofibrosarcoma protuberans. To date, only 4 cases have been reported in the literature. Due to its rarity, succinct clinicopathologic characteristics are yet to be established.

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Background: Legislation regulating Spanish and European academic curricula prescribes a certain level of knowledge and skills any student must master. Spanish universities freely decide the number of credits assigned to each subject and in which year the subject will be taught. We hypothesize that this flexibility may give way to excessively heterogeneous training across universities in nursing degrees.

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Peripheral T-cell lymphoma (PTCL) is a clinically aggressive disease, with a poor response to therapy and a low overall survival rate of approximately 30% after 5 years. We have analyzed a series of 105 cases with a diagnosis of PTCL using a customized NanoString platform (NanoString Technologies, Seattle, WA) that includes 208 genes associated with T-cell differentiation, oncogenes and tumor suppressor genes, deregulated pathways, and stromal cell subpopulations. A comparative analysis of the various histological types of PTCL (angioimmunoblastic T-cell lymphoma [AITL]; PTCL with T follicular helper [TFH] phenotype; PTCL not otherwise specified [NOS]) showed that specific sets of genes were associated with each of the diagnoses.

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Antimicrobial resistance (AMR) in spp. ( and ) is a concern due to its importance in public health, particularly when it involves aminoglycosides and macrolides, drugs of choice for treatment of human cases. Co-resistance to these two antimicrobial classes involves transfer of genetic elements and/or acquisition of mutations in different genetic loci, which can in turn spread through vertical or horizontal gene transfer (HGT) phenomena, with each route having different potential implications.

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In this study, the effects of co-administration with biscuit flour and fermented defatted "alperujo" (FDA) on gut health were evaluated in a batch of laying hens (Hy-Line 2015) on a commercial farm. Animals were divided into two groups: control group and treatment group; and histological and morphometric analyses of all sections of the intestine (duodenum, jejunum, ileum, cecum and rectum) were performed at 10, 18, 25, 50 and 75 weeks of age. During the whole productive period, a decrease in the mortality rate ( = 0.

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Mitochondria are involved in the development and acquisition of a malignant phenotype in hematological cancers. Recently, their role in the pathogenesis of multiple myeloma (MM) has been suggested to be therapeutically explored. MYC is a master regulator of b-cell malignancies such as multiple myeloma, and its activation is known to deregulate mitochondrial function.

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Objective: To analyze histological factors possibly associated with lymphovascular space invasion (LVSI) and to determine which of those can act as independent surrogate markers.

Methods: Retrospective cohort study performed between January 2001 and December 2014. LVSI was defined as the presence of tumor cells inside a space completely surrounded by endothelial cells.

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Background: Neoplasms from the ventricular system share a common location but have highly variable histogenesis. Many are slowly growing tumors that behave in a benign fashion. They can be classified as primary and secondary tumors.

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The bone marrow (BM) exists heterogeneously as hematopoietic/red or adipocytic/yellow marrow depending on skeletal location, age, and physiological condition. Mouse models and patients undergoing radio/chemotherapy or suffering acute BM failure endure rapid adipocytic conversion of the marrow microenvironment, the so-called "red-to-yellow" transition. Following hematopoietic recovery, such as upon BM transplantation, a "yellow-to-red" transition occurs and functional hematopoiesis is restored.

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