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"Ball, Jacqueline A"
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Traveling green
Introduces steps people are taking to make traveling more environmentally friendly.
Book
Effects of Repeated Annual Inactivated Influenza Vaccination among Healthcare Personnel on Serum Hemagglutinin Inhibition Antibody Response to A/Perth/16/2009 (H3N2)-like virus during 2010-11
Recently, lower estimates of influenza vaccine effectiveness (VE) against A(H3N2) virus illness among those vaccinated during the previous season or multiple seasons have been reported; however, it is unclear whether these effects are due to differences in immunogenicity.
We performed hemagglutination inhibition antibody (HI) assays on serum collected at preseason, ∼30 days post-vaccination, and postseason from a prospective cohort of healthcare personnel (HCP). Eligible participants had medical and vaccination records for at least four years (since July, 2006), including 578 HCP who received 2010-11 trivalent inactivated influenza vaccine [IIV3, containing A/Perth/16/2009-like A(H3N2)] and 209 HCP who declined vaccination. Estimates of the percentage with high titers (≥40 and>100) and geometric mean fold change ratios (GMRs) to A/Perth/16/2009-like virus by number of prior vaccinations were adjusted for age, sex, race, education, household size, hospital care responsibilities, and study site.
Post-vaccination GMRs were inversely associated with the number of prior vaccinations, increasing from 2.3 among those with 4 prior vaccinations to 6.2 among HCP with zero prior vaccinations (F[4,567]=9.97, p<.0005). Thirty-two percent of HCP with 1 prior vaccination achieved titers >100 compared to only 11% of HCP with 4 prior vaccinations (adjusted odds ratio=6.8, 95% CI=3.1 – 15.3).
Our findings point to an exposure-response association between repeated IIV3 vaccination and HI for A(H3N2) and are consistent with recent VE observations. Ultimately, better vaccines and vaccine strategies may be needed in order to optimize immunogenicity and VE for HCP and other repeated vaccinees.
Journal Article
Active learning in undergraduate classroom dental education- a scoping review
Previous reviews on active learning in dental education have not comprehensibly summarized the research activity on this topic as they have largely focused on specific active learning strategies. This scoping review aimed to map the breadth and depth of the research activity on active learning strategies in undergraduate classroom dental education.
The review was guided by Arksey & O'Malley's multi-step framework and followed the PRISMA Extension Scoping Reviews guidelines. MEDLINE, ERIC, EMBASE, and Scopus databases were searched from January 2005 to October 2022. Peer-reviewed, primary research articles published in English were selected. Reference lists of relevant studies were verified to improve the search. Two trained researchers independently screened titles, abstracts, and full-texts articles for eligibility and extracted the relevant data.
In total, 93 studies were included in the review. All studies performed outcome evaluations, including reaction evaluation alone (n = 32; 34.4%), learning evaluation alone (n = 19; 20.4%), and reaction and learning evaluations combined (n = 42; 45.1%). Most studies used quantitative approaches (n = 85; 91.3%), performed post-intervention evaluations (n = 70; 75.3%), and measured student satisfaction (n = 73; 78.5%) and knowledge acquisition (n = 61; 65.6%) using direct and indirect (self-report) measures. Only 4 studies (4.3%) reported faculty data in addition to student data. Flipped learning, group discussion, problem-based learning, and team-based learning were the active learning strategies most frequently evaluated (≥6 studies). Overall, most studies found that active learning improved satisfaction and knowledge acquisition and was superior to traditional lectures based on direct and indirect outcome measures.
Active learning has the potential to enhance student learning in undergraduate classroom dental education; however, robust process and outcome evaluation designs are needed to demonstrate its effectiveness in this educational context. Further research is warranted to evaluate the impact of active learning strategies on skill development and behavioral change in order to support the competency-based approach in dental education.
Journal Article
Superoxide Generated at Mitochondrial Complex III Triggers Acute Responses to Hypoxia in the Pulmonary Circulation
The role of reactive oxygen species (ROS) signaling in the O(2) sensing mechanism underlying acute hypoxic pulmonary vasoconstriction (HPV) has been controversial. Although mitochondria are important sources of ROS, studies using chemical inhibitors have yielded conflicting results, whereas cellular models using genetic suppression have precluded in vivo confirmation. Hence, genetic animal models are required to test mechanistic hypotheses.
We tested whether mitochondrial Complex III is required for the ROS signaling and vasoconstriction responses to acute hypoxia in pulmonary arteries (PA).
A mouse permitting Cre-mediated conditional deletion of the Rieske iron-sulfur protein (RISP) of Complex III was generated. Adenoviral Cre recombinase was used to delete RISP from isolated PA vessels or smooth muscle cells (PASMC).
In PASMC, RISP depletion abolished hypoxia-induced increases in ROS signaling in the mitochondrial intermembrane space and cytosol, and it abrogated hypoxia-induced increases in [Ca(2+)](i). In isolated PA vessels, RISP depletion abolished hypoxia-induced ROS signaling in the cytosol. Breeding the RISP mice with transgenic mice expressing tamoxifen-activated Cre in smooth muscle permitted the depletion of RISP in PASMC in vivo. Precision-cut lung slices from those mice revealed that RISP depletion abolished hypoxia-induced increases in [Ca(2+)](i) of the PA. In vivo RISP depletion in smooth muscle attenuated the acute hypoxia-induced increase in right ventricular systolic pressure in anesthetized mice.
Acute hypoxia induces superoxide release from Complex III of smooth muscle cells. These oxidant signals diffuse into the cytosol and trigger increases in [Ca(2+)](i) that cause acute hypoxic pulmonary vasoconstriction.
Journal Article
Regulation of Hypoxia-induced Pulmonary Hypertension by Vascular Smooth Muscle Hypoxia-Inducible Factor-1α
Chronic hypoxia induces pulmonary vascular remodeling, pulmonary hypertension, and right ventricular hypertrophy. At present, little is known about mechanisms driving these responses. Hypoxia-inducible factor-1α (HIF-1α) is a master regulator of transcription in hypoxic cells, up-regulating genes involved in energy metabolism, proliferation, and extracellular matrix reorganization. Systemic loss of a single HIF-1α allele has been shown to attenuate hypoxic pulmonary hypertension, but the cells contributing to this response have not been identified.
We sought to determine the contribution of HIF-1α in smooth muscle on pulmonary vascular and right heart responses to chronic hypoxia.
We used mice with homozygous conditional deletion of HIF-1α combined with tamoxifen-inducible smooth muscle-specific Cre recombinase expression. Mice received either tamoxifen or vehicle followed by exposure to either normoxia or chronic hypoxia (10% O2) for 30 days before measurement of cardiopulmonary responses.
Tamoxifen-induced smooth muscle-specific deletion of HIF-1α attenuated pulmonary vascular remodeling and pulmonary hypertension in chronic hypoxia. However, right ventricular hypertrophy was unchanged despite attenuated pulmonary pressures.
These results indicate that HIF-1α in smooth muscle contributes to pulmonary vascular remodeling and pulmonary hypertension in chronic hypoxia. However, loss of HIF-1 function in smooth muscle does not affect hypoxic cardiac remodeling, suggesting that the cardiac hypertrophy response is not directly coupled to the increase in pulmonary artery pressure.
Journal Article
Exploring culinary medicine as a promising method of nutritional education in medical school: a scoping review
Background
Dietary modifications are considered a first-line intervention for chronic disease management, yet graduating doctors still report not feeling competent to counsel patients on their diet. Research has focused on methods to address this shortfall in physician competency, including culinary medicine. Culinary medicine is an approach to education that involves hands-on food and cooking learning experiences to equip participants with tools for improving the nutrition behaviour and health of their future patients. Despite positive findings in the efficacy of these interventions, they differ markedly in approach and target, which therefore fails to provide adequate evidence that could serve to guide future culinary medicine interventions.
Objective
A scoping review to synthesize the existing literature on culinary medicine interventions that are offered during medical training.
Methods
Online databases were used to identify literature published prior to April 2022 that involve a hands-on culinary medicine component to nutrition and examine academic impact, feasibility and acceptability.
Results
Twenty-four studies met the eligibility criteria.
Despite promising gains in nutrition knowledge, confidence and high acceptability of the programs, large variations exist in delivery method, setting, and course content between programs. There is a lack of program cost reporting and long-term follow up of participants, inconsistent evidence for improved nutrition attitudes amongst participants, as well as geographically limited adoption of such programs.
Conclusions
The findings of this research demonstrate a clear increase in interest in the use of hands-on culinary medicine programs as educational tools, evidence of feasibility in implementation, and improved student nutritional knowledge, skill and counseling compared to a traditional didactic curriculum. The quality of culinary medicine research studies is increasing and the aims of research are narrowing to focus on how culinary medicine can positively impact medical education. The findings from this review will aid in legitimising culinary medicine as an effective delivery method of nutritional education in medical programs.
Journal Article
Nursing From Within: A Self-Care Course for Undergraduate Nursing Students
Background
The demanding nature of clinical work can adversely affect nursing professionals, especially without effective self-care strategies to manage stress. Research suggests undergraduate nursing programs should provide education to increase competence regarding self-care.
Method
A course was developed by nursing faculty aimed at teaching self-care strategies to undergraduate nursing students to help them reduce stress and integrate these practices into their future professional routine. The course focused on evidence-based strategies centered around gratitude, mindfulness, and self-forgiveness.
Results
Students learned and practiced self-care techniques to minimize stress and its negative effects. Anecdotal and course evaluation feedback received from faculty and students was positive. Nurse educators are encouraged to incorporate similar approaches in their curricula to foster self-care practices among students.
Conclusion
Future implications include determining whether self-care techniques affect student performance in didactic and clinical work, and investigating the long-term effects of self-care practices as students transition to the nursing role.
Journal Article
Hungry for more: Australian medical students’ competence, attitudes and preferences towards nutrition education
Background
Inadequate nutrition education in medical training is a prevailing global challenge. This study assessed Australian medical students’ self-perceived competencies in nutrition and preferences regarding nutrition education in medical training.
Methods
We conducted a national cross-sectional online survey between September 2019 and January 2020. Our survey collected sociodemographic characteristics and assessed nutrition competency according to a validated assessment tool. All Australian medical students aged over 18 were eligible to participate.
Results
One hundred ninety-five medical students representing 20 Australian medical schools completed the survey and reported moderate nutrition knowledge (17·6 ± 4.1 out of 35, 50%) and skills (29.8 ± 7.6 out of 55, 54%). Students demonstrated positive attitudes towards nutrition training/education (35·9 ± 4.0 out of 40, 90%). Most medical students (
n
= 148, 72%) reported they had sought some form of nutrition education outside of their degree. Students showed preference for practical, evidence-based nutrition education that is integrated in and prioritised throughout medical training.
Conclusions
Australian medical students express positive attitudes towards nutrition but report only low to moderate nutrition knowledge and skills. There is an opportunity to incorporate practical, regular nutrition learning activities into Australian medical curriculums to equip future doctors to adequately address non-communicable disease. Such initiatives are likely to be well received by students.
Journal Article
Human Gene Mutation Database (HGMD®): 2003 update
The Human Gene Mutation Database (HGMD) constitutes a comprehensive core collection of data on germ‐line mutations in nuclear genes underlying or associated with human inherited disease (www.hgmd.org). Data catalogued includes: single base‐pair substitutions in coding, regulatory and splicing‐relevant regions; micro‐deletions and micro‐insertions; indels; triplet repeat expansions as well as gross deletions; insertions; duplications; and complex rearrangements. Each mutation is entered into HGMD only once in order to avoid confusion between recurrent and identical‐by‐descent lesions. By March 2003, the database contained in excess of 39,415 different lesions detected in 1,516 different nuclear genes, with new entries currently accumulating at a rate exceeding 5,000 per annum. Since its inception, HGMD has been expanded to include cDNA reference sequences for more than 87% of listed genes, splice junction sequences, disease‐associated and functional polymorphisms, as well as links to data present in publicly available online locus‐specific mutation databases. Although HGMD has recently entered into a licensing agreement with Celera Genomics (Rockville, MD), mutation data will continue to be made freely available via the Internet. Hum Mutat 21:577–581, 2003. © 2003 Wiley‐Liss, Inc.
Journal Article