Validation of an Instrument to Measure an Interviewer's Ability to Conduct a 24-Hour Food Recall

Nutritional Science

Pregnancy and Substance Use

The use of alcohol and other harmful substances, such as cocaine, opioids, and marijuana during pregnancy has increased over the last decades (Sebastiani et al., 2018). Using these substances can be very harmful to the unborn baby and mother (Viteri et al., 2015). This fact sheet covers (1) the consequences of substance use and (2) the current recommendations for substance use during pregnancy

The Need for Social Accountability in Medical School Education: a Tale of Five Students’ Integration into Vancouver’s Downtown Eastside

Abstract Medical educators are recognizing that social accountability is a tenet of Canadian medical education, yet it is a difficult concept to teach didactically. Accumulating evidence supports the integration of social accountability into the medical curriculum through community involvement. Fortunately, the University of British Columbia Faculty of Medicine enables students to pursue community learning as part of its curriculum; and we, five medical students, benefited from that opportunity. This commentary will promote the importance of teaching social accountability in medical schools through community-based learning based on available literature and our personal experience with Vancouver’s Downtown Eastside (DTES).  Résumé Les professeurs de médecine reconnaissent que la responsabilité sociale est un pilier de l’éducation médicale canadienne; néan- moins, c’est un concept difficile à enseigner didactiquement. De plus en plus de preuves appuient l’intégration de la responsabilité sociale au curriculum médical à travers l’engagement communautaire. Heureusement, la Faculté de Médecine de l’Université de la Colombie-Britannique permet aux étudiants de participer à l’apprentissage par engagement communautaire en tant que composante du curriculum; nous, cinq étudiants en médecine, avons pu profiter de cette opportunité. Ce commentaire va promouvoir l’importance d’enseigner la responsabilité sociale dans les écoles de médecine par l’intermédiaire de l’apprentissage par engagement communau- taire, basé sur la littérature disponible et notre expérience personnelle avec le quartier de Downtown Eastside de Vancouver (DTES).

Tumor BRCA Testing in High Grade Serous Carcinoma: Mutation Rates and Optimal Tissue Requirements

Background: Approximately 25% of women diagnosed with tubo-ovarian high-grade serous carcinoma have germline deleterious mutations in BRCA1 or BRCA2, characteristic of hereditary breast and ovarian cancer syndrome, while somatic mutations have been detected in 3–7%. We set out to determine the BRCA mutation rates and optimal tissue requirements for tumor BRCA testing in patients diagnosed with tubo-ovarian high-grade serous carcinoma. Methods: Sequencing was performed using a multiplexed polymerase chain reaction-based approach on 291 tissue samples, with a minimum sequencing depth of 500X and an allele frequency of >5%. Results: There were 253 surgical samples (87%), 35 biopsies (12%) and 3 cytology cell blocks (1%). The initial failure rate was 9% (25/291), including 9 cases (3%) with insufficient tumor, and 16 (6%) with non-amplifiable DNA. Sequencing was successful in 78% (228/291) and deemed indeterminate due to failed exons or variants below the limit of detection in 13% (38/291). Repeat testing was successful in 67% (28/42) of retested samples, with an overall success rate of 86% (251/291). Clinically significant (pathogenic, likely pathogenic) variants were identified in 17% (48/276) of complete and indeterminate cases. Successful sequencing was dependent on sample type, tumor cellularity and size (p ≤ 0.001) but not on neoadjuvant chemotherapy or age of blocks (p > 0.05). Conclusions: Our study shows a 17% tumor BRCA mutation rate, with an overall success rate of 86%. Biopsy and cytology samples and post-chemotherapy specimens can be used for tumor BRCA testing, and optimal tumors measure ≥5 mm in size with at least 20% cellularity

Proceedings of the 2015 WA Chapter of MSA Symposium on Music Performance and Analysis

This publication, entitled Proceedings of the 2015 WA Chapter MSA Symposium on Music Performance and Analysis, is a double-blind peer-reviewed conference proceedings published by the Western Australian Chapter of the Musicological Society of Australia, in conjunction with the Western Australian Academy of Performing Arts, Edith Cowan University, edited by Jonathan Paget, Victoria Rogers, and Nicholas Bannan. The original symposium was held at the University of Western Australia, School of Music, on 12 December 2015. With the advent of performer-scholars within Australian Universities, the intersections between analytical knowledge and performance are constantly being re-evaluated and reinvented. This collection of papers presents several strands of analytical discourse, including: (1) the analysis of music recordings, particularly in terms of historical performance practices; (2) reinventions of the \u27page-to-stage\u27 paradigm, employing new analytical methods; (3) analytical knowledge applied to pedagogy, particularly concerning improvisation; and (4) so-called \u27practice-led\u27 research.https://ro.ecu.edu.au/ecubooks/1005/thumbnail.jp

PDB_REDO: constructive validation, more than just looking for errors

The decision-making algorithms and software used in PDB_REDO to re-refine and rebuild crystallographic protein structures in the PDB are presented and discussed

Pest population dynamics are related to a continental overwintering gradient

Overwintering success is an important determinant of arthropod populations that must be considered as climate change continues to influence the spatiotemporal population dynamics of agricultural pests. Using a long-term monitoring database and biologically relevant overwintering zones, we modeled the annual and seasonal population dynamics of a common pest, Helicoverpa zea (Boddie), based on three overwintering suitability zones throughout North America using four decades of soil temperatures: the southern range (able to persist through winter), transitional zone (uncertain overwintering survivorship), and northern limits (unable to survive winter). Our model indicates H. zea population dynamics are hierarchically structured with continental-level effects that are partitioned into three geographic zones. Seasonal populations were initially detected in the southern range, where they experienced multiple large population peaks. All three zones experienced a final peak between late July (southern range) and mid-August to mid-September (transitional zone and northern limits). The southern range expanded by 3% since 1981 and is projected to increase by twofold by 2099 but the areas of other zones are expected to decrease in the future. These changes suggest larger populations may persist at higher latitudes in the future due to reduced low-temperature lethal events during winter. Because H. zea is a highly migratory pest, predicting when populations accumulate in one region can inform synchronous or lagged population development in other regions. We show the value of combining long-term datasets, remotely sensed data, and laboratory findings to inform forecasting of insect pests

Shift Work in Nurses: Contribution of Phenotypes and Genotypes to Adaptation

Daily cycles of sleep/wake, hormones, and physiological processes are often misaligned with behavioral patterns during shift work, leading to an increased risk of developing cardiovascular/metabolic/gastrointestinal disorders, some types of cancer, and mental disorders including depression and anxiety. It is unclear how sleep timing, chronotype, and circadian clock gene variation contribute to adaptation to shift work.Newly defined sleep strategies, chronotype, and genotype for polymorphisms in circadian clock genes were assessed in 388 hospital day- and night-shift nurses.Night-shift nurses who used sleep deprivation as a means to switch to and from diurnal sleep on work days (∼25%) were the most poorly adapted to their work schedule. Chronotype also influenced efficacy of adaptation. In addition, polymorphisms in CLOCK, NPAS2, PER2, and PER3 were significantly associated with outcomes such as alcohol/caffeine consumption and sleepiness, as well as sleep phase, inertia and duration in both single- and multi-locus models. Many of these results were specific to shift type suggesting an interaction between genotype and environment (in this case, shift work).Sleep strategy, chronotype, and genotype contribute to the adaptation of the circadian system to an environment that switches frequently and/or irregularly between different schedules of the light-dark cycle and social/workplace time. This study of shift work nurses illustrates how an environmental "stress" to the temporal organization of physiology and metabolism can have behavioral and health-related consequences. Because nurses are a key component of health care, these findings could have important implications for health-care policy