51 research outputs found
Quiste hidatĂdico intracardĂaco en una niña: reporte de caso
La equinococosis es una infecciĂłn parasitaria provocada por Echinococcus granulosus, que, en su estado quĂstico, forma al denominado quiste hidatĂdico. Presenta morbilidad importante, con posibles secuelas relacionadas con la ubicaciĂłn, y altos costos debido al tratamiento quirĂșrgico y farmacolĂłgico prolongado. El hĂgado y el pulmĂłn son las ubicaciones anatĂłmicas mĂĄs usuales, mucho mĂĄs raras son el riñón, bazo, cerebro y corazĂłn, este Ășltimo representa el 0,5 % a 2 % del total de casos. El PerĂș es un paĂs endĂ©mico de esta antropozoonosis y principalmente registra casos procedentes de la sierra central (95 %). Se presenta el caso de una niña de diez años, con diagnĂłstico de esta entidad, clasificaciĂłn ecogrĂĄfica CE 1, grupo clĂnico 1 (confirmado por anatomĂa patolĂłgica) con posterior tratamiento quirĂșrgico y farmacolĂłgico especĂfico (albendazol). La paciente se recuperĂł satisfactoriamente de la cirugĂa practicada, y fue dada de alta a los 16 dĂas, sin complicaciones
Surface immunogenic protein from Streptococcus agalactiae and Fissurella latimarginata hemocyanin are TLR4 ligands and activate MyD88- and TRIF dependent signaling pathways
The development of vaccine adjuvants is of interest for the management of chronic diseases, cancer, and future pandemics. Therefore, the role of Toll-like receptors (TLRs) in the effects of vaccine adjuvants has been investigated. TLR4 ligand-based adjuvants are the most frequently used adjuvants for human vaccines. Among TLR family members, TLR4 has unique dual signaling capabilities due to the recruitment of two adapter proteins, myeloid differentiation marker 88 (MyD88) and interferon-ÎČ adapter inducer containing the toll-interleukin-1 receptor (TIR) domain (TRIF). MyD88-mediated signaling triggers a proinflammatory innate immune response, while TRIF-mediated signaling leads to an adaptive immune response. Most studies have used lipopolysaccharide-based ligands as TLR4 ligand-based adjuvants; however, although protein-based ligands have been proven advantageous as adjuvants, their mechanisms of action, including their ability to undergo structural modifications to achieve optimal immunogenicity, have been explored less thoroughly. In this work, we characterized the effects of two protein-based adjuvants (PBAs) on TLR4 signaling via the recruitment of MyD88 and TRIF. As models of TLR4-PBAs, we used hemocyanin from Fissurella latimarginata (FLH) and a recombinant surface immunogenic protein (rSIP) from Streptococcus agalactiae. We determined that rSIP and FLH are partial TLR4 agonists, and depending on the protein agonist used, TLR4 has a unique bias toward the TRIF or MyD88 pathway. Furthermore, when characterizing gene products with MyD88 and TRIF pathway-dependent expression, differences in TLR4-associated signaling were observed. rSIP and FLH require MyD88 and TRIF to activate nuclear factor kappa beta (NF-ÎșB) and interferon regulatory factor (IRF). However, rSIP and FLH have a specific pattern of interleukin 6 (IL-6) and interferon gamma-induced protein 10 (IP-10) secretion associated with MyD88 and TRIF recruitment. Functionally, rSIP and FLH promote antigen cross-presentation in a manner dependent on TLR4, MyD88 and TRIF signaling. However, FLH activates a specific TRIF-dependent signaling pathway associated with cytokine expression and a pathway dependent on MyD88 and TRIF recruitment for antigen cross-presentation. Finally, this work supports the use of these TLR4-PBAs as clinically useful vaccine adjuvants that selectively activate TRIF- and MyD88-dependent signaling to drive safe innate immune responses and vigorous Th1 adaptive immune responses
Actualidad y prospectiva de la investigaciĂłn cientĂfica en el Centro Universitario Amecameca de la Universidad AutĂłnoma del Estado de MĂ©xico
Con responsabilidad, se organizó un programa cuya finalidad fuera publicitar con transparencia dichos avances, a través de un esfuerzo de rendición de cuentas a la comunidad inmediata, la universitaria, y a la comunidad abierta, la sociedad que la principal referencia para tal efecto.
El programa se concretiza a travĂ©s del presente libro, conformado con una inspiraciĂłn de investigaciĂłn multidisciplinaria; sin embargo, para llegar a tal fin, el reto es realizar el proceso de bĂșsqueda y generaciĂłn de conocimiento transitando hacia la colaboraciĂłn de los cuerpos acadĂ©micos, que puedan construir nuevos conocimientos fortalecidos por la convergencia de diferentes campos del saber. En consecuencia, la primera etapa de esta estrategia es la publicidad de los trabajos investigativos ejercidos, para hacer un balance al dĂa, pero tambiĂ©n proyectar el futuro de cada campo y ĂĄrea del conocimiento.
La organizaciĂłn explicativa estĂĄ organizada por tres bloques representativos del quehacer en la generaciĂłn de conocimiento del Centro Universitario, un primer bloque centra el interĂ©s en las humanidades, educaciĂłn y sustentabilidad; el segundo bloque lo integra la reflexiĂłn cientĂfica sobre la construcciĂłn democrĂĄtica, derechos humanos y equidad de gĂ©nero; en el tercer segmento se destina a la seguridad alimentaria, salud pĂșblica y sistemas agropecuarios.
La actualidad de la investigaciĂłn eleva la producciĂłn lograda y lo que en el momento se encuentra en construcciĂłn y los alcances que produce para la docencia, la investigaciĂłn misma, y para la sociedad en general. La prospectiva es un ĂĄrea que todos los capĂtulos desarrollan con el propĂłsito de delinear los alcances innovadores por andar en teorĂa, metodologĂa e incluso en los saberes mismo
Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences
The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & NemĂ©sio 2007; Donegan 2008, 2009; NemĂ©sio 2009aâb; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported
by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on
18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based
researchers who signed it in the short time span from 20 September to 6 October 2016
Transverse momentum spectra of charged particles in proton-proton collisions at GeV with ALICE at the LHC
The inclusive charged particle transverse momentum distribution is measured
in proton-proton collisions at GeV at the LHC using the ALICE
detector. The measurement is performed in the central pseudorapidity region
over the transverse momentum range GeV/.
The correlation between transverse momentum and particle multiplicity is also
studied. Results are presented for inelastic (INEL) and non-single-diffractive
(NSD) events. The average transverse momentum for is (stat.) (syst.) GeV/ and
\left_{\rm NSD}=0.489\pm0.001 (stat.) (syst.)
GeV/, respectively. The data exhibit a slightly larger than measurements in wider pseudorapidity intervals. The results are
compared to simulations with the Monte Carlo event generators PYTHIA and
PHOJET.Comment: 20 pages, 8 figures, 2 tables, published version, figures at
http://aliceinfo.cern.ch/ArtSubmission/node/390
Outcomes from elective colorectal cancer surgery during the SARS-CoV-2 pandemic
This study aimed to describe the change in surgical practice and the impact of SARS-CoV-2 on mortality after surgical resection of colorectal cancer during the initial phases of the SARS-CoV-2 pandemic
EducaciĂłn ambiental y sociedad. Saberes locales para el desarrollo y la sustentabilidad
EL LIBRO PERMITE REFLEXIONAR SOBRE LA IMPORTANCIA DE FOMENTAL LA EDUCACIĂN AMBIENTAL PARA RESOLVER LA PROBLEMĂTICA AMBIENTALEL LIBRO PRESENTA DIFERENTES TRABAJOS QUE ESTUDIAN EL TEMA D ELA SUSTENTABILIDAD, ENFATIZANDO LA IMPORTANCIA DE LA EDUCACIĂN AMBIENTAL Y LA TRANSDISCIPLINANINGUN
Geodivulgar: GeologĂa y Sociedad 2018
Depto. de GeodinĂĄmica, EstratigrafĂa y PaleontologĂaFac. de Ciencias GeolĂłgicasFALSEsubmitte
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