Perspectives on “Giving Back”: A Conversation Between Researcher and Refugee

Our chapter—“Perspectives on ‘giving back’: A conversation between researcher and refugee”—offers personal reflections on the ethics of research with refugees and what it means for researchers to “give back” to refugee participants beyond “policy impact”. Written as a dialogue between an academic and a Rohingya refugee youth leader, we explore the blurry lines between academic work and advocacy when the issues of refugee protection are pressing, as well as the appropriateness of researchers giving monetary donations and volunteering for refugee causes as payback for data. In this chapter, we also examine what it means to build trust and relationships between researchers and refugees, and how too often researchers fail to develop meaningful research interactions with refugee participants who share their time, energy and personal stories of vulnerability

Gene expression relationship between prostate cancer cells of Gleason 3, 4 and normal epithelial cells as revealed by cell type-specific transcriptomes

Background: Prostate cancer cells in primary tumors have been typed CD10(-)/CD13(-)/CD24(hi)/CD26(+)/CD38(lo)/CD44(-)/CD104(-). This CD phenotype suggests a lineage relationship between cancer cells and luminal cells. The Gleason grade of tumors is a descriptive of tumor glandular differentiation. Higher Gleason scores are associated with treatment failure. Methods: CD26(+) cancer cells were isolated from Gleason 3+3 (G3) and Gleason 4+4 (G4) tumors by cell sorting, and their gene expression or transcriptome was determined by Affymetrix DNA array analysis. Dataset analysis was used to determine gene expression similarities and differences between G3 and G4 as well as to prostate cancer cell lines and histologically normal prostate luminal cells. Results: The G3 and G4 transcriptomes were compared to those of prostatic cell types of non-cancer, which included luminal, basal, stromal fibromuscular, and endothelial. A principal components analysis of the various transcriptome datasets indicated a closer relationship between luminal and G3 than luminal and G4. Dataset comparison also showed that the cancer transcriptomes differed substantially from those of prostate cancer cell lines. Conclusions: Genes differentially expressed in cancer are potential biomarkers for cancer detection, and those differentially expressed between G3 and G4 are potential biomarkers for disease stratification given that G4 cancer is associated with poor outcomes. Differentially expressed genes likely contribute to the prostate cancer phenotype and constitute the signatures of these particular cancer cell types.National Institutes of Health (NIH)[CA111244]National Institutes of Health (NIH)[CA98699]National Institutes of Health (NIH)[CA85859]National Institutes of Health (NIH)[DK63630][P50-GMO-76547

Functional Morphometric Analysis of the Furcula in Mesozoic Birds

The furcula displays enormous morphological and structural diversity. Acting as an important origin for flight muscles involved in the downstroke, the form of this element has been shown to vary with flight mode. This study seeks to clarify the strength of this form-function relationship through the use of eigenshape morphometric analysis coupled with recently developed phylogenetic comparative methods (PCMs), including phylogenetic Flexible Discriminant Analysis (pFDA). Additionally, the morphospace derived from the furculae of extant birds is used to shed light on possible flight adaptations of Mesozoic fossil taxa. While broad conclusions of earlier work are supported (U-shaped furculae are associated with soaring, strong anteroposterior curvature with wing-propelled diving), correlations between form and function do not appear to be so clear-cut, likely due to the significantly larger dataset and wider spectrum of flight modes sampled here. Interclavicular angle is an even more powerful discriminator of flight mode than curvature, and is positively correlated with body size. With the exception of the close relatives of modern birds, the ornithuromorphs, Mesozoic taxa tend to occupy unique regions of morphospace, and thus may have either evolved unfamiliar flight styles or have arrived at similar styles through divergent musculoskeletal configurations

Performance of non-invasive tests and histology for the prediction of clinical outcomes in patients with non-alcoholic fatty liver disease: an individual participant data meta-analysis

BackgroundHistologically assessed liver fibrosis stage has prognostic significance in patients with non-alcoholic fatty liver disease (NAFLD) and is accepted as a surrogate endpoint in clinical trials for non-cirrhotic NAFLD. Our aim was to compare the prognostic performance of non-invasive tests with liver histology in patients with NAFLD.MethodsThis was an individual participant data meta-analysis of the prognostic performance of histologically assessed fibrosis stage (F0–4), liver stiffness measured by vibration-controlled transient elastography (LSM-VCTE), fibrosis-4 index (FIB-4), and NAFLD fibrosis score (NFS) in patients with NAFLD. The literature was searched for a previously published systematic review on the diagnostic accuracy of imaging and simple non-invasive tests and updated to Jan 12, 2022 for this study. Studies were identified through PubMed/MEDLINE, EMBASE, and CENTRAL, and authors were contacted for individual participant data, including outcome data, with a minimum of 12 months of follow-up. The primary outcome was a composite endpoint of all-cause mortality, hepatocellular carcinoma, liver transplantation, or cirrhosis complications (ie, ascites, variceal bleeding, hepatic encephalopathy, or progression to a MELD score ≥15). We calculated aggregated survival curves for trichotomised groups and compared them using stratified log-rank tests (histology: F0–2 vs F3 vs F4; LSM: 2·67; NFS: 0·676), calculated areas under the time-dependent receiver operating characteristic curves (tAUC), and performed Cox proportional-hazards regression to adjust for confounding. This study was registered with PROSPERO, CRD42022312226.FindingsOf 65 eligible studies, we included data on 2518 patients with biopsy-proven NAFLD from 25 studies (1126 [44·7%] were female, median age was 54 years [IQR 44–63), and 1161 [46·1%] had type 2 diabetes). After a median follow-up of 57 months [IQR 33–91], the composite endpoint was observed in 145 (5·8%) patients. Stratified log-rank tests showed significant differences between the trichotomised patient groups (p<0·0001 for all comparisons). The tAUC at 5 years were 0·72 (95% CI 0·62–0·81) for histology, 0·76 (0·70–0·83) for LSM-VCTE, 0·74 (0·64–0·82) for FIB-4, and 0·70 (0·63–0·80) for NFS. All index tests were significant predictors of the primary outcome after adjustment for confounders in the Cox regression.InterpretationSimple non-invasive tests performed as well as histologically assessed fibrosis in predicting clinical outcomes in patients with NAFLD and could be considered as alternatives to liver biopsy in some cases

Temporal parameters of speech production in bilingual speakers with apraxic or phonemic paraphasic errors

BACKGROUND: The four‐level framework of speech production (Van der Merwe, 199741. Van der Merwe , A. 1997 . “ A theoretical framework for the characterization of pathologic speech sensorimotor control. ” . In Clinical management of sensorimotor speech disorders , Edited by: McNeil , M. R . 1 – 25 . New York : Thieme . (1st ed.) View all references) suggests that language of production of a bilingual speaker can be viewed as a contextual factor increasing the complexity of speech production. A comparison of first‐ versus second‐language speech production in individuals with apraxia of speech or phonemic paraphasic speech errors may clarify the difference in the underlying disorders in these two populations. AIMS: This study examined the effect of first‐ versus second‐language (L1 versus L2) speech production on specific temporal parameters of speech in bilingual normal speakers and bilingual speakers with either apraxic or phonemic paraphasic speech errors. The purpose was to determine if second‐language speech production will differentiate between normal speakers and speakers with speech‐level neurogenic disorders and between speakers with phonological planning or speech motor planning and programming disorders. METHODS AND PROCEDURES: Three persons with apraxia of speech (AOS), three with phonemic paraphasias (PP), and five normal‐speaking participants were included in the study. Participants were required to read phonemically similar L1 and L2 CVC words in a two‐word carrier phrase, five times each, at a normal and fast speaking rate. Acoustic analysis of on‐target productions included vowel duration, utterance duration, utterance onset duration, and voice onset time. Data processing involved a descriptive approach using a measure of central tendency—the mean. Intra‐participant comparisons were made across contexts (L1, L2, fast speaking rate, and normal speaking rate). OUTCOMES AND RESULTS: Five participants with AOS and PP seemed to be influenced by speaking in L2 to a greater extent than the normal speakers and one participant with PP, in that they more frequently experienced difficulty with durational adjustments (decreasing duration in the fast speaking rate) in L2 than in L1. Furthermore, the participants with AOS or PP also exhibited a greater extent of durational adjustment in L1 than in L2. CONCLUSIONS: The results of this study suggest that L2 speech production is more challenging than speech production in L1 for participants with either AOS or PP. The current study could not differentiate between all speakers with a disorder in phonological planning and speakers with a motor planning and programming disorder. Individual patterns appear to exist in speakers with PP. Increased processing demands seem to impact on the phonological planning and the speech motor planning and programming levels of speech production.http://www.psypress.com/aphasiologynf201

Whole exome sequencing of wild-derived inbred strains of mice improves power to link phenotype and genotype

International audiencestop codons. Simulations demonstrate that the higher density of genetic variation in the Montpellier strains provides increased power for quantitative genetic studies. Inasmuch as the power to connect genotype to phenotype depends on genetic variation, it is important to incorporate these additional genetic strains into future research programs. Illumina sequencing data are available in NCBI under the BioProject PRJNA326865