5 research outputs found

    Pre-Existing Tumoral B Cell Infiltration and Impaired Genome Maintenance Correlate with Response to Chemoradiotherapy in Locally Advanced Rectal Cancer

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    Locally advanced rectal cancer (LARC) remains a medical challenge. Reliable biomarkers to predict which patients will significantly respond to neoadjuvant chemoradiotherapy (nCRT) have not been identified. We evaluated baseline genomic and transcriptomic features to detect differences that may help predict response to nCRT. Eligible LARC patients received nCRT (3D-LCRT 50.4 Gy plus capecitabine 825 mg/m2/bid), preceded by three cycles of CAPOX in high systemic-relapse risk tumors, and subsequent surgery. Frozen tumor biopsies at diagnosis were sequenced using a colorectal cancer panel. Transcriptomic data was used for pathway and cell deconvolution inferential algorithms, coupled with immunohistochemical validation. Clinical and molecular data were analyzed according to nCRT outcome. Pathways related to DNA repair and proliferation (p RAS and TP53 mutations (p = 0.001) were associated with poor response. Enrichment of expression signatures related to enhanced immune response, particularly B cells and interferon signaling (p RAS and TP53 mutations along with a proficient DNA repair system that may counteract chemoradio-induced DNA damage was associated with poor response.Facultad de Ciencias M茅dicasCentro de Investigaciones Inmunol贸gicas B谩sicas y Aplicada

    Gesti贸n del proceso de innovaci贸n de las pr谩cticas de ense帽anza en instituciones educativas. Un estudio prospectivo a diez a帽os

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    Fil: Ferreyra, Horacio Ademar. Universidad Cat贸lica de C贸rdoba. Facultad de Educaci贸n; ArgentinaFil: Maine, Claudia Amelia. Universidad Cat贸lica de C贸rdoba. Facultad de Educaci贸n; ArgentinaFil: Abram, Liliana Alejandra. Universidad Cat贸lica de C贸rdoba. Facultad de Educaci贸n; ArgentinaFil: Barrionuevo Vidal, Mar铆a Bel茅n. Universidad Cat贸lica de C贸rdoba. Facultad de Educaci贸n; ArgentinaFil: Etchegorry, Mariana. Universidad Cat贸lica de C贸rdoba. Facultad de Educaci贸n; ArgentinaFil: Perfumo, Mar铆a Soledad. Universidad Cat贸lica de C贸rdoba. Facultad de Educaci贸n; Argentin

    The role of Molossidae and Vespertilionidae in shaping the diversity of alphacoronaviruses in the Americas

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    Bats are reservoirs of diverse coronaviruses (CoVs), including progenitors of severe acute respiratory syndrome CoV (SARS-CoV) and SARS-CoV-2. In the Americas, there is a contrast between alphacoronaviruses (alphaCoVs) and betaCoVs: while cospeciation prevails in the latter, alphaCoV evolution is dominated by deep and recent host switches. AlphaCoV lineages are maintained by two different bat family groups, Phyllostomidae and Vespertilionidae plus Molossidae. In this study, we used a Bayesian framework to analyze the process of diversification of the lineages maintained by Molossidae and Vespertilionidae, adding novel CoV sequences from Argentina. We provide evidence that the observed CoV diversity in these two bat families is shaped by their geographic distribution and that CoVs exhibit clustering at the level of bat genera. We discuss the causes of the cocirculation of two independent clades in Molossus and Tadarida as well as the role of Myotis as the ancestral host and a major evolutionary reservoir of alphaCoVs across the continent. Although more CoV sampling efforts are needed, these findings contribute to a better knowledge of the diversity of alphaCoVs and the links between bat host species.Fil: Caraballo, Diego Alfredo. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas. Oficina de Coordinaci贸n Administrativa Ciudad Universitaria. Instituto de Ecolog铆a, Gen茅tica y Evoluci贸n de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecolog铆a, Gen茅tica y Evoluci贸n de Buenos Aires; ArgentinaFil: Sabio, Maria Soledad. Direcci贸n Nacional de Instituto de Investigaci贸n. Administraci贸n Nacional de Laboratorio e Instituto de Salud "Dr. C. G. Malbr谩n"; ArgentinaFil: Colombo, Valeria Carolina. Consejo Nacional de Investigaciones Cient铆ficas y T茅cnicas; Argentina. Direcci贸n Nacional de Instituto de Investigaci贸n. Administraci贸n Nacional de Laboratorio e Instituto de Salud "Dr. C. G. Malbr谩n"; ArgentinaFil: Piccirilli, Mar铆a Guadalupe. Direcci贸n Nacional de Instituto de Investigaci贸n. Administraci贸n Nacional de Laboratorio e Instituto de Salud "Dr. C. G. Malbr谩n"; ArgentinaFil: Vico, Lorena. No especif铆ca;Fil: Hirmas Riade, Stella Maris. Direcci贸n Nacional de Instituto de Investigaci贸n. Administraci贸n Nacional de Laboratorio e Instituto de Salud "Dr. C. G. Malbr谩n"; ArgentinaFil: Campos, Josefina. Direcci贸n Nacional de Instituto de Investigaci贸n. Administraci贸n Nacional de Laboratorio e Instituto de Salud "Dr. C. G. Malbr谩n"; ArgentinaFil: Mart铆nez, Gustavo. No especif铆ca;Fil: Beltr谩n, Fernando. Gobierno de la Ciudad Aut贸noma de Buenos Aires. Ministerio de Salud. Instituto de Zoonosis Luis Pasteur; ArgentinaFil: Baumeister, Elsa. Direcci贸n Nacional de Instituto de Investigaci贸n. Administraci贸n Nacional de Laboratorio e Instituto de Salud "Dr. C. G. Malbr谩n"; ArgentinaFil: Cisterna, Daniel Marcelo. Direcci贸n Nacional de Instituto de Investigaci贸n. Administraci贸n Nacional de Laboratorio e Instituto de Salud "Dr. C. G. Malbr谩n"; Argentin
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