RESUMEN
Our aim was to conduct an umbrella review of evidence from meta-analyses of observational studies investigating the link between sugar-sweetened beverage consumption and human health outcomes. Using predefined evidence classification criteria, we evaluated evidence from 47 meta-analyses encompassing 22,055,269 individuals. Overall, 79% of these analyses indicated direct associations between greater sugar-sweetened beverage consumption and higher risks of adverse health outcomes. Convincing evidence (class I) supported direct associations between sugar-sweetened beverage consumption and risks of depression, cardiovascular disease, nephrolithiasis, type 2 diabetes mellitus, and higher uric acid concentrations. Highly suggestive evidence (class II) supported associations with risks of nonalcoholic fatty liver disease and dental caries. Out of the remaining 40 meta-analyses, 29 were graded as suggestive or weak in the strength of evidence (classes III and IV), and 11 showed no evidence (class V). These findings inform and provide support for population-based and public health strategies aimed at reducing sugary drink consumption for improved health.
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Estudios Observacionales como Asunto , Bebidas Azucaradas , Humanos , Bebidas Azucaradas/efectos adversos , Diabetes Mellitus Tipo 2/etiología , Diabetes Mellitus Tipo 2/epidemiología , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/etiología , Metaanálisis como Asunto , Caries Dental/epidemiología , Caries Dental/prevención & control , Caries Dental/etiología , Enfermedad del Hígado Graso no Alcohólico/epidemiología , Enfermedad del Hígado Graso no Alcohólico/etiología , DepresiónRESUMEN
The Vision and Change report called for biology educators to transform undergraduate biology education. The report recommended educators transparently state what students should know and be able to do and create assessments to measure student learning. Using backward design, learning objectives (LOs) can serve as the basis for course transformation. In this essay, we present a roadmap for planning successful course transformations synthesized from the literature. We identified three categories of critical features for successful course transformation. First, establishing a sense of urgency and offering faculty incentives to engage in this time-consuming work creates a needed climate for change. Second, departments are empowered in this process by including key stakeholders, building faculty teams to work collaboratively to identify LOs used to drive pedagogical change, develop assessment strategies, and engage in professional development efforts to support the process. Third, there must be intentional effort to manage resistance and ensure academic freedom and creativity in the classroom. General recommendations as well as areas for further research are discussed.
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Biología , Curriculum , Aprendizaje , Estudiantes , Humanos , Biología/educación , Docentes , UniversidadesRESUMEN
Numerous animal and human studies have assessed the relationship between polyphenols and outcomes related to depression. However, no comprehensive synthesis of the main findings has been conducted. The aim of this manuscript was to systematically review the available evidence from animal and human studies on the association and the effects of dietary polyphenols on depression and provide recommendations for future research. We based our review on 163 preclinical animal, 16 observational and 44 intervention articles assessing the relationship between polyphenols and outcomes related to depression. Most animal studies demonstrated that exposure to polyphenols alleviated behaviours reported to be associated with depression. However, human studies are less clear, with some studies reporting an inverse relationship between the intake of some polyphenols, and polyphenol rich foods and depression risk and symptoms, while others reporting no association or effect. Hence, while there has been extensive research conducted in animals and there is some supporting evidence in humans, further human studies are required, particularly in younger and clinical populations.
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Depresión , Polifenoles , Animales , Humanos , Polifenoles/farmacología , Polifenoles/uso terapéutico , Depresión/tratamiento farmacológicoRESUMEN
Inflammatory bowel disease (IBD) is a chronic gastrointestinal disorder. Standard treatment focuses on reducing the inflammatory burden, however, not all patients respond adequately to conventional medical therapy. These patients, referred to as Patients at Risk of Suboptimal Outcomes (PARSO), have not been studied collectively. The present study aimed to understand the biopsychosocial characteristics of patients with IBD at risk of sub-optimal outcomes for targeted multi-disciplinary treatment to encourage optimal outcomes. Two cross-sectional online surveys, including 760 PARSO and 208 control (non-PARSO) participants, were conducted and their data combined. Biopsychosocial factors included quality of life, pain, disease activity, wellbeing, fatigue, stress, social support, and sleep difficulties. Results suggest that active disease, quality of life, stress, social support, sleep difficulties, fatigue, wellbeing, smoking status, IBD subtype, and pain are significantly associated with membership in a subgroup of PARSO. We also used logistic regression to explore variables associated with the total likelihood of PARSO status. Overall, the model predicted the at-risk status to a substantial degree (R2-2ll = .41, x2 = 401.53, p < .001). Younger age in years, female sex, Crohn's disease, and greater measured and subjective disease activity significantly increased the likelihood of participants being identified as PARSO; OR CI95% = 0.96 (0.95, 0.97); OR CI95% = 4.46 (2.95, 6.71); OR CI95% = 1.58 (1.05, 2.37); OR CI95% = 3.52 (2.18, 5.69); OR CI95% = 45.99 (14.11, 149.89). A biopsychosocial and personalised approach to IBD care might be necessary to support those at risk of suboptimal outcomes in achieving better long-term wellbeing.
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Learning objectives (LOs) are used to communicate the purpose of instruction. Done well, they convey the expectations that the instructor-and by extension, the academic field-has in terms of what students should know and be able to do after completing a course of study. As a result, they help students better understand course activities and increase student performance on assessments. LOs also serve as the foundation of course design, as they help structure classroom practices and define the focus of assessments. Understanding the research can improve and refine instructor and student use of LOs. This essay describes an online, evidence-based teaching guide published by CBE-Life Sciences Education (LSE) at http://lse.ascb.org/learning-objectives. The guide contains condensed summaries of key research findings organized by recommendations for writing and using LOs, summaries of and links to research articles and other resources, and actionable advice in the form of a checklist for instructors. In addition to describing key features of the guide, we also identify areas that warrant further empirical studies.
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Aprendizaje , Estudiantes , Humanos , EscrituraRESUMEN
BACKGROUND: We explored feasibility, acceptability and preliminary efficacy of an online writing intervention (WriteforIBD) against an active control condition for distress in people with inflammatory bowel disease (IBD) at the time of the COVID-19 pandemic. METHODS: A feasibility RCT was conducted in 19 adults (89.5% female, aged 20-69 years) with IBD and mild-moderate distress. Participants allocated to the WriteForIBD group completed a 4-day 30-min writing program adapted for IBD. The active control group wrote about trivial topics provided by researchers. Feasibility was established based on the recruitment and retention while acceptability based on completion rates and a numeric rating scale. All participants completed measures of mental health and disease activity before and after the intervention (one week) and at follow-up three months after the study commencement. RESULTS: The retention rate in the study was high (100% WriteForIBD; 82% control). All participants attended every session. 84.2% of participants were satisfied with the intervention. All participants reported a significant improvement in IBD-Control immediately after the intervention; F (2, 33.7) = 7.641, p = .002. A significant interaction of group*time for resilience was noted, R2 = 0.19, p < .001, with the active control group reporting a significant decline in resilience from the first follow-up to three months while no significant change in resilience for the WriteForIBD group was recorded. CONCLUSIONS: Online expressive writing is potentially feasible and highly acceptable to people with IBD who report distress. Future large-scale trials should explore the intervention that is adapted from this feasibility study. REGISTRATION: ID: ACTRN12620000448943p.
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COVID-19 , Enfermedades Inflamatorias del Intestino , Adulto , Enfermedad Crónica , Estudios de Factibilidad , Femenino , Humanos , Enfermedades Inflamatorias del Intestino/psicología , Enfermedades Inflamatorias del Intestino/terapia , Masculino , Pandemias , EscrituraRESUMEN
BACKGROUND: Inflammatory bowel disease (IBD) is a common and debilitating disease of the gastrointestinal tract. Psychological distress is highly comorbid to IBD, especially during periods of active disease. However, a controversy exists on how to best manage its symptoms in the IBD population. AIMS: This study aimed to explore protective and risk factors of psychological distress in IBD. METHODS: A cross-sectional online survey was conducted via social media and online patient forums. Respondents (N = 235) filled out questionnaires on demographics, health characteristics and a range of psychological variables. Measures of pain, disease activity, comorbid functional symptom severity, social support, subjective wellbeing, sleep quality, fatigue, stress, age, BMI and gender were entered into the Classification and Regression Tree Analysis model. RESULTS: Overall, 87 participants (37%) reported distress. Self-reported stress significantly discriminated between cases of probable psychological distress. In those with high stress, patients with and without probable psychological distress were separated by subjective wellbeing. Among patients with low stress, fatigue was the primary discriminator. CONCLUSIONS: Monitoring patients for low subjective wellbeing and high stress in clinical settings could offer an opportunity to engage in early intervention to limit psychological distress development. Monitoring for fatigue in patients who seem otherwise psychologically well could offer preventative benefits.
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Enfermedades Inflamatorias del Intestino , Distrés Psicológico , Enfermedad Crónica , Estudios Transversales , Fatiga/epidemiología , Fatiga/etiología , Humanos , Enfermedades Inflamatorias del Intestino/complicaciones , Enfermedades Inflamatorias del Intestino/epidemiología , Enfermedades Inflamatorias del Intestino/psicología , Calidad de Vida , Estrés Psicológico/diagnóstico , Estrés Psicológico/epidemiología , Estrés Psicológico/etiología , Encuestas y CuestionariosRESUMEN
Students often complain about their perceived disconnect between the time and effort spent studying and their subsequent performance on exams. Robert Bjork's research asserts that retrieval of stored information acts as a memory modifier, and that using tests as learning events creates "desirable difficulties that enhance learning." To determine the effect of utilizing testing as a learning event in the introductory (majors) biology classroom, we used an online homework platform to give required quizzes throughout the course. Analysis of exam grades earned by those taking 100% of pre-exam quizzes indicates that not only does this group have a significantly higher exam average than the group of students who took 0% of the pre-exam quizzes, but they also have a significantly higher exam average than the class average. Through detailed, statistical analysis, the benefit of quizzing is demonstrated to be significant for students of diverse academic abilities. Pre-exam quizzing using an online homework platform is an effective way to increase student performance on exams and allows class time to be utilized for teaching activities.
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Biología/educación , Evaluación Educacional , Internet , Estudiantes , CurriculumRESUMEN
In trematodes, there is a family of proteins which combine EF-hand-containing domains with dynein light chain (DLC)-like domains. A member of this family from the liver fluke, Fasciola hepatica-FhCaBP4-has been identified and characterised biochemically. FhCaBP4 has an N-terminal domain containing two imperfect EF-hand sequences and a C-terminal dynein light chain-like domain. Molecular modelling predicted that the two domains are joined by a flexible linker. Native gel electrophoresis demonstrated that FhCaBP4 binds to calcium, manganese, barium and strontium ions, but not to magnesium or zinc ions. The hydrophobic, fluorescent probe 8-anilinonaphthalene-1-sulphonate bound more tightly to FhCaBP4 in the presence of calcium ions. This suggests that the protein undergoes a conformational change on ion binding which increases the number of non-polar residues on the surface. FhCaBP4 was protected from limited proteolysis by the calmodulin antagonist W7, but not by trifluoperazine or praziquantel. Protein-protein cross-linking experiments showed that FhCaBP4 underwent calcium ion-dependent dimerisation. Since DLCs are commonly dimeric, it is likely that FhCaBP4 dimerises through this domain. The molecular model reveals that the calcium ion-binding site is located close to a key sequence in the DLC-like domain, suggesting a plausible mechanism for calcium-dependent dimerisation.