Respiratory infections

A new European Respiratory Review series explores respiratory infections https://bit.ly/3A5eN3

HIV-1 Vpr Causes Synaptodendritic Damage in Neurons

HIV weakens the immune system by infecting and destroying T-cells, leaving the body vulnerable to infection and the development of AIDS. Conventional treatments for HIV, such as combined anti-rectroviral therapy (cART), fail to prevent the development of HIV-associated neurocognitive disorder (HAND). Neurological dysfunction has been directly related to the invasion of HIV in the central nervous system (CNS). HIV produces neurotoxic proteins, such as the Viral Protein R (Vpr), which contribute to HAND. Astrocytes are the most abundant cells in the brain and an important HIV target. We hypothesize that astrocytes expressing Vpr will cause neuronal damage in our co-culture system. Primary astrocytes were transfected with Vpr plasmid or control (pEGFP or mock) using electroporation. Astrocytes were then co-cultured with cortical neurons. At 48 and 72 hours we collected the primary astrocytes to confirm the Vpr expression via western blot analysis. We then measured structural damage in the neurons using immunofluorescence for cytoskeletal (MAP2, f-actin) and synaptic (synaptophysin) damage. Preliminary results showed strong staining of filamentous actin and MAP2 with weak detection of synaptophysin. The positive control for neurotoxicity (2.8µM acrylamide) showed substantial damage to the cellular structure. Results for Vpr expression are pending. After confirming that the immunofluorescence assays are working with our controls, we expect to detect any synaptodendritic damage in the neurons caused by Vpr in our upcoming experiments

Multicultural Student Center: Measuring a Transformative Campus Experience

This poster will illustrate the student engaged experience utilized by Kansas State University for its Multicultural Student Center. It will delineate the campus community partnership and the empowerment process initiated by the multicultural student organizations that led to the preliminary building design and fundraising strategies by the University. It will also address how multiple communities in a university can engage in a creative, collaborative process that not only fosters inclusion but also student learning. Ultimately, it shows how student collaboration with University Administration can result in both intended and unexpected outcomes for all involved, especially impacts for beyond stated expectations

Overview of high-speed TDM-PON beyond 50 Gbps per wavelength using digital signal processing [Invited Tutorial]

The recent evolution of passive optical network standards and related research activities for physical layer solutions that achieve bit rates well above 10 Gbps per wavelength (lambda) is discussed. We show that the advancement toward 50, 100, and 200 Gbps/lambda will certainly require a strong introduction of advanced digital signal processing (DSP) technologies for linear, and maybe nonlinear, equalization and for forward error correction. We start by reviewing in detail the current standardization activities in the International Telecommunication Union and the Institute of Electrical and Electronics Engineers, and then we present a comparison of the DSP approaches for traditional direct detection solutions and for future coherent detection approaches. (c) 2022 Optica Publishing Grou

Changing Needs of Individuals with Disabilities in the Time of COVID-19 as Observed by a Family Navigation Program in Miami, FL

The Family Navigator Program (FNP) is designed to help families navigate the complex system of services available to people with intellectual and developmental disabilities (I/DD), chronic health conditions, mental health issues, and other special health care needs. Based at the Mailman Center for Child Development at the University of Miami, the FNP is free and available to all families in South Florida. Most families enrolled in the FNP are receiving medical services from a university clinic; however, the program also accepts referrals from outside agencies and self-referrals. The aim of this study was to investigate the needs of families enrolled in the FNP before and after March 2020, when stay-at-home orders were put in place to address the COVID-19 pandemic. One hundred forty-five families enrolled in the FNP between November 2019 and mid-March 2020 were selected as a pre-COVID sample to be compared with 197 families enrolled from mid-March to September 2020. Families were deidentified, and data on demographics and specific needs were extracted. Demographics included race and ethnicity, language, age group, zip code, and disability or medical condition. Specific needs were defined as (1) topics on which families required education and (2) resources to which families were referred. There were no statistically significant differences in demographics before and after March 2020. There was a significant increase in referrals to financial resources during COVID (OR= 3.019, 95% CI [1.445-6.308]). There were also significant changes in the number of families provided with education on the following: increases in federal and state programs (OR = 2.156, 95% CI [1.306-3.560]) and other miscellaneous topics (1.902, 95% CI [1.081-3.348]); and decreases in school systems (OR=0.531 CI, 95% [0.328-0.858]) and therapies (CI, 95% [0.345-0.825]). These differences likely reflect the economic and social toll that the pandemic has taken on families caring for individuals with IDD and special health care needs in South Florida. Families’ priorities shifted from school and therapy to economic needs. The FNP adjusted by administering services by telephone or online, rather than by in-person meetings. These data provide a snapshot of how the needs of families changed during COVID-19 in one diverse, urban community

Counting, generating and sampling tree alignments

Pairwise ordered tree alignment are combinatorial objects that appear in RNA secondary structure comparison. However, the usual representation of tree alignments as supertrees is ambiguous, i.e. two distinct supertrees may induce identical sets of matches between identical pairs of trees. This ambiguity is uninformative, and detrimental to any probabilistic analysis.In this work, we consider tree alignments up to equivalence. Our first result is a precise asymptotic enumeration of tree alignments, obtained from a context-free grammar by mean of basic analytic combinatorics. Our second result focuses on alignments between two given ordered trees $S$ and $T$. By refining our grammar to align specific trees, we obtain a decomposition scheme for the space of alignments, and use it to design an efficient dynamic programming algorithm for sampling alignments under the Gibbs-Boltzmann probability distribution. This generalizes existing tree alignment algorithms, and opens the door for a probabilistic analysis of the space of suboptimal RNA secondary structures alignments.Comment: ALCOB - 3rd International Conference on Algorithms for Computational Biology - 2016, Jun 2016, Trujillo, Spain. 201

A Systematic Review: Light Therapy for Individuals with Dementia and Implications for Practice

This systematic review seeks to answer the question: is light therapy an effective intervention for sundowning symptoms experienced by individuals who have dementia

Editorial

Kenneth Bain, Vicerrector de Asuntos Académicos de la Universidad delDistrito de Columbia (UDC) y también profesor de historia en MontclairState University, New Jersey, autor de uno de los libros más leídos yconsultados por profesores del mundo “Lo que hacen los buenos profesoresuniversitarios” (ganador del premio Virginia and Warren Stone que otorgala Harvard University Prees a un libro excepcional sobre educación), indicólo que en su concepto hacen muy bien los buenos profesores; y concluyóque es comprender la asignatura que orientan y valorar el aprendizajehumano.Es por ello que en línea con esa filosofía de hacerlo bien, precisamentePerspectivas Educativas, la revista más importante de educación deldepartamento del Tolima, se preocupa en cada edición por dar a conocera través de sus páginas las reflexiones, aportes y experiencias queinvestigadores en el campo de la educación, van construyendo a medida queavanza el tiempo; siempre con el único propósito de aportar conocimientoa los docentes, ya sean universitarios o no, o de los niveles preescolar,básica y media. Por tanto, en este volumen presentamos a nuestros lectoresuna variada producción académica escrita desde diferentes disciplinas quedan cuenta del quehacer docente e investigativo