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1.
Int J Nurs Educ Scholarsh ; 22(1)2025 Jan 01.
Article de Anglais | MEDLINE | ID: mdl-38459787

RÉSUMÉ

OBJECTIVES: This systematic review of qualitative studies explored interventions to improve student nurses' knowledge, attitudes or willingness to work with older people. Student nurses are likely to encounter older people in all health and aged care settings, however, research demonstrates that few have career aspirations in gerontological nursing. METHODS: Qualitative systematic review method based on the Cochrane Handbook for Systematic Reviews of Interventions. RESULTS: Search of Medline, Embase, PsycINFO, EBSCOhost and Scopus yielded 1841 articles which were screened to include primary research about educational interventions to improve student nurses' knowledge, attitudes and/or willingness to work with older people. Data extraction was performed on the 14 included studies, and data were analysed using directed content analysis. The Mixed Methods Appraisal Tool (MMAT) was used the assess the quality of the studies. CONCLUSIONS: Educational interventions included theory or practice courses, or a combination of theory and practice. While most interventions changed nursing students' negative attitudes towards older people, few increased their willingness to work with them. Practice courses had the most significant impact on willingness to work with older people. Quality assessment revealed methodical limitations. More research is needed to better understand the elements of practice interventions that enhance student nurses' knowledge, attitudes, and willingness to work with older people, so that they can be replicated.


Sujet(s)
Gériatrie , Infirmières et infirmiers , Élève infirmier , Sujet âgé , Humains , Attitude du personnel soignant , Compétence clinique
2.
Obes Sci Pract ; 10(4): e765, 2024 Aug.
Article de Anglais | MEDLINE | ID: mdl-39026558

RÉSUMÉ

Background: An international panel of obesity medicine experts from multiple professional organizations examined patterns of obesity care and current obesity treatment guidelines to identify areas requiring updating in response to emerging science and clinical evidence. Aims: The panel focused on multiple medical health and societal issues influencing effective treatment of obesity and identified several unmet needs in the definition, assessment, and care of obesity. Methods: The panel was held in Leesburg, Virginia in September 2019. Results: The panelists recommended addressing these unmet needs in obesity medicine through research, education, evaluation of delivery and payment of care, and updating clinical practice guidelines (CPG) to better reflect obesity's pathophysiological basis and heterogeneity, as well as the disease's health, sociocultural, and economic complications; effects on quality of life; need for standards for quantitative comparison of treatment benefits, risks, and costs; and the need to more effectively integrate obesity treatment guidelines into routine clinical practice and to facilitate more direct clinician participation to improve public understanding of obesity as a disease with a pathophysiological basis. The panel also recommended that professional organizations working to improve the care of people with obesity collaborate via a working group to develop an updated, patient-focused, comprehensive CPG establishing standards of care, addressing identified needs, and providing for routine, periodic review and updating. Conclusions: Unmet needs in the definition, assessment and treatment of obesity were identified and a blueprint to address these needs developed via a clinical practice guideline that can be utilized worldwide to respond to the increasing prevalence of obesity.

3.
J Med Internet Res ; 26: e53196, 2024 Jul 01.
Article de Anglais | MEDLINE | ID: mdl-38949862

RÉSUMÉ

BACKGROUND: Virtual reality (VR) is a well-researched digital intervention that has been used for managing acute pain and anxiety in pediatric patients undergoing various medical procedures. This study focuses on investigating the role of unique patient characteristics and VR immersion level on the effectiveness of VR for managing pediatric pain and anxiety during venipuncture. OBJECTIVE: The purpose of this study is to determine how specific patient characteristics and level of immersion during a VR intervention impact anxiety and pain levels for pediatric patients undergoing venipuncture procedures. METHODS: This study is a secondary data analysis of 2 combined, previously published randomized control trials on 252 pediatric patients aged 10-21 years observed at Children's Hospital Los Angeles from April 12, 2017, to July 24, 2019. One randomized clinical trial was conducted in 3 clinical environments examining peripheral intravenous catheter placement (radiology and an infusion center) and blood draw (phlebotomy). Conditional process analysis was used to conduct moderation and mediation analyses to assess the impact of immersion level during the VR intervention. RESULTS: Significant moderation was found between the level of immersion and anxiety sensitivity when predicting postprocedural anxiety (P=.01). Patients exhibiting the highest anxiety sensitivity within the standard of care yielded a 1.9 (95% CI 0.9-2.8; P<.001)-point elevation in postprocedural anxiety relative to individuals with high immersion levels. No other significant factors were found to mediate or moderate the effect of immersion on either postprocedural anxiety or pain. CONCLUSIONS: VR is most effective for patients with higher anxiety sensitivity who report feeling highly immersed. Age, location of the procedure, and gender of the patient were not found to significantly impact VR's success in managing levels of postprocedural pain or anxiety, suggesting that immersive VR may be a beneficial intervention for a broad pediatric population. TRIAL REGISTRATION: ClinicalTrials.gov NCT04268901; https://clinicaltrials.gov/study/NCT04268901.


Sujet(s)
Anxiété , Phlébotomie , Réalité de synthèse , Humains , Adolescent , Phlébotomie/psychologie , Phlébotomie/effets indésirables , Phlébotomie/méthodes , Enfant , Anxiété/thérapie , Anxiété/psychologie , Femelle , Mâle , Jeune adulte , Douleur/psychologie , Douleur/étiologie , Gestion de la douleur/méthodes , Gestion de la douleur/psychologie
4.
J Thromb Haemost ; 2024 Jul 17.
Article de Anglais | MEDLINE | ID: mdl-39029742

RÉSUMÉ

The currently approved direct oral anticoagulants (DOACs) are increasingly used in clinical practice. Although serious bleeding risks are lower with DOACs compared to vitamin K antagonists, bleeding remains the most frequent side effect. Andexanet-alfa and idarucizumab are the currently approved specific reversal agents for oral FXa inhibitors and dabigatran, respectively. Our prior guidance document was published in 2106, but with more information available on the utility and increased use of these reversal agents and other bleeding management strategies, we have updated this ISTH guidance document on DOAC reversal. In this narrative review, we compare the mechanism of action of specific and non-specific reversal agents, review the clinical data supporting their use, and provide guidance on when reversal is indicated. In addition, we briefly discuss the reversal of oral FXIa inhibitors, a new class of DOACs currently under clinical development.

5.
Gerontol Geriatr Educ ; : 1-8, 2024 Jul 24.
Article de Anglais | MEDLINE | ID: mdl-39045814

RÉSUMÉ

BACKGROUND: Nursing students often receive insufficient training in older adults' care. PURPOSE: Examine nursing students' perceptions of an e-learning module developed to enhance their knowledge about the comfort, safety, and mobility of older adults. METHODS: A cross-sectional survey was administered to third-year baccalaureate nursing students at a Canadian university after they had completed the comfort, safety, and mobility module. The survey assessed students' perceptions of the e-learning module using four 5-pointLikert-type items. The survey also contained demographic questions and one open-ended question that invited participants to make any comments they wished. Descriptive statistics were used to summarize participants'demographic characteristics. Responses to the open-ended quesiton were summative content analyzed. RESULTS: The survey was completed by 119 participants, who reported that the module increased their confidence, perceptions and knowledge in working with older adults. Participants also found the method of instruction to be convenient, interactive, and enjoyable. CONCLUSIONS: Results suggest that the learning module has the potential to facilitate student nurses' learning about comfort, safety, and mobility.

6.
J Exp Med ; 221(9)2024 Sep 02.
Article de Anglais | MEDLINE | ID: mdl-39042188

RÉSUMÉ

The contribution of placental immune responses to congenital Zika virus (ZIKV) syndrome remains poorly understood. Here, we leveraged a mouse model of ZIKV infection to identify mechanisms of innate immune restriction exclusively in the fetal compartment of the placenta. ZIKV principally infected mononuclear trophoblasts in the junctional zone, which was limited by mitochondrial antiviral-signaling protein (MAVS) and type I interferon (IFN) signaling mechanisms. Single nuclear RNA sequencing revealed MAVS-dependent expression of IFN-stimulated genes (ISGs) in spongiotrophoblasts but not in other placental cells that use alternate pathways to induce ISGs. ZIKV infection of Ifnar1-/- or Mavs-/- placentas was associated with greater infection of the adjacent immunocompetent decidua, and heterozygous Mavs+/- or Ifnar1+/- dams carrying immunodeficient fetuses sustained greater maternal viremia and tissue infection than dams carrying wild-type fetuses. Thus, MAVS-IFN signaling in the fetus restricts ZIKV infection in junctional zone trophoblasts, which modulates dissemination and outcome for both the fetus and the pregnant mother.


Sujet(s)
Protéines adaptatrices de la transduction du signal , Caduques , Foetus , Interféron de type I , Placenta , Récepteur à l'interféron alpha-bêta , Transduction du signal , Trophoblastes , Infection par le virus Zika , Virus Zika , Femelle , Animaux , Grossesse , Interféron de type I/métabolisme , Interféron de type I/immunologie , Transduction du signal/immunologie , Protéines adaptatrices de la transduction du signal/métabolisme , Protéines adaptatrices de la transduction du signal/génétique , Placenta/immunologie , Placenta/virologie , Placenta/métabolisme , Infection par le virus Zika/immunologie , Infection par le virus Zika/virologie , Virus Zika/immunologie , Virus Zika/physiologie , Souris , Caduques/immunologie , Caduques/virologie , Caduques/métabolisme , Foetus/immunologie , Foetus/virologie , Trophoblastes/immunologie , Trophoblastes/virologie , Trophoblastes/métabolisme , Récepteur à l'interféron alpha-bêta/génétique , Récepteur à l'interféron alpha-bêta/métabolisme , Souris de lignée C57BL , Souris knockout , Immunité innée , Complications infectieuses de la grossesse/immunologie , Complications infectieuses de la grossesse/virologie , Modèles animaux de maladie humaine
7.
bioRxiv ; 2024 Jul 07.
Article de Anglais | MEDLINE | ID: mdl-39005317

RÉSUMÉ

Bifidobacteria are among the earliest colonizers of the human gut, conferring numerous health benefits. While multiple Bifidobacterium strains are used as probiotics, accumulating evidence suggests that the individual responses to probiotic supplementation may vary, likely due to a variety of factors, including strain type(s), gut community composition, dietary habits of the consumer, and other health/lifestyle conditions. Given the saccharolytic nature of bifidobacteria, the carbohydrate composition of the diet is one of the primary factors dictating the colonization efficiency of Bifidobacterium strains. Therefore, a comprehensive understanding of bifidobacterial glycan metabolism at the strain level is necessary to rationally design probiotic or synbiotic formulations that combine bacterial strains with glycans that match their nutrient preferences. In this study, we systematically reconstructed 66 pathways involved in the utilization of mono-, di-, oligo-, and polysaccharides by analyzing the representation of 565 curated metabolic functional roles (catabolic enzymes, transporters, transcriptional regulators) in 2973 non-redundant cultured Bifidobacterium isolates and metagenome-assembled genomes (MAGs). Our analysis uncovered substantial heterogeneity in the predicted glycan utilization capabilities at the species and strain level and revealed the presence of a yet undescribed phenotypically distinct subspecies-level clade within the Bifidobacterium longum species. We also identified Bangladeshi isolates harboring unique gene clusters tentatively implicated in the breakdown of xyloglucan and human milk oligosaccharides. Predicted carbohydrate utilization phenotypes were experimentally characterized and validated. Our large-scale genomic analysis considerably expands the knowledge of carbohydrate metabolism in bifidobacteria and provides a foundation for rationally designing single- or multi-strain probiotic formulations of a given bifidobacterial species as well as synbiotic combinations of bifidobacterial strains matched with their preferred carbohydrate substrates.

8.
PLoS One ; 19(7): e0305623, 2024.
Article de Anglais | MEDLINE | ID: mdl-38968295

RÉSUMÉ

BACKGROUND: Development of reliable disease activity biomarkers is critical for diagnostics, prognostics, and novel drug development. Although computed tomography (CT) is the gold-standard for quantification of bone erosions, there are no consensus approaches or rationales for utilization of specific outcome measures of erosive arthritis in complex joints. In the case of preclinical models, such as sexually dimorphic tumor necrosis factor transgenic (TNF-Tg) mice, disease severity is routinely quantified in the ankle through manual segmentation of the talus or small regions of adjacent bones primarily due to the ease in measurement. Herein, we sought to determine the particular hindpaw bones that represent reliable biomarkers of sex-dependent disease progression to guide future investigation and analysis. METHODS: Hindpaw micro-CT was performed on wild-type (n = 4 male, n = 4 female) and TNF-Tg (n = 4 male, n = 7 female) mice at monthly intervals from 2-5 (females) and 2-8-months (males) of age, since female TNF-Tg mice exhibit early mortality from cardiopulmonary disease at approximately 5-6-months. Further, 8-month-old WT (n = 4) and TNF-Tg males treated with anti-TNF monoclonal antibodies (n = 5) or IgG placebo isotype controls (n = 6) for 6-weeks were imaged with micro-CT every 3-weeks. For image analysis, we utilized our recently developed high-throughput and semi-automated segmentation strategy in Amira software. Synovial and osteoclast histology of ankle joints was quantified using Visiopharm. RESULTS: First, we demonstrated that the accuracy of automated segmentation, determined through analysis of ~9000 individual bones by a single user, was comparable in wild-type and TNF-Tg hindpaws before correction (79.2±8.9% vs 80.1±5.1%, p = 0.52). Compared to other bone compartments, the tarsal region demonstrated a sudden, specific, and significant bone volume reduction in female TNF-Tg mice, but not in males, by 5-months (4-months 4.3± 0.22 vs 5-months 3.4± 0.62 mm3, p<0.05). Specifically, the cuboid showed significantly reduced bone volumes at early timepoints compared to other tarsals (i.e., 4-months: Cuboid -24.1±7.2% vs Talus -9.0±5.9% of 2-month baseline). Additional bones localized to the anterolateral region of the ankle also exhibited dramatic erosions in the tarsal region of females, coinciding with increased synovitis and osteoclasts. In TNF-Tg male mice with severe arthritis, the talus and calcaneus exhibited the most sensitive response to anti-TNF therapy measured by effect size of bone volume change over treatment period. CONCLUSIONS: We demonstrated that sexually dimorphic changes in arthritic hindpaws of TNF-Tg mice are bone-specific, where the cuboid serves as a reliable early biomarker of erosive arthritis in female mice. Adoption of automated segmentation approaches in pre-clinical or clinical models has potential to translate quantitative biomarkers to monitor bone erosions in disease and evaluate therapeutic efficacy.


Sujet(s)
Marqueurs biologiques , Souris transgéniques , Facteur de nécrose tumorale alpha , Microtomographie aux rayons X , Animaux , Femelle , Mâle , Souris , Microtomographie aux rayons X/méthodes , Facteur de nécrose tumorale alpha/antagonistes et inhibiteurs , Modèles animaux de maladie humaine , Facteurs sexuels , Souris de lignée C57BL , Caractères sexuels
9.
medRxiv ; 2024 Jun 13.
Article de Anglais | MEDLINE | ID: mdl-38946965

RÉSUMÉ

Severe acute malnutrition (SAM), defined anthropometrically as a weight-for-length z-score more than 3 standard deviations below the mean (WLZ<-3), affects 19 million children under 5-years-old worldwide. Complete anthropometric recovery after standard inventions is rare with children often left with moderate acute malnutrition (MAM; WLZ -2 to -3). Here we conduct a randomized controlled trial (RCT), involving 12-18-month-old Bangladeshi children from urban and rural sites, who after hospital-based treatment for SAM received a 3-month intervention with a microbiota-directed complementary food (MDCF-2) or a ready-to-use supplementary food (RUSF) as they transitioned to MAM. The rate of WLZ improvement was significantly greater with MDCF-2 than the more calorically-dense RUSF, as we observed in a previous RCT of Bangladeshi children with MAM without antecedent SAM. A correlated meta-analysis of aptamer-based measurements of 4,520 plasma proteins in this and the prior RCT revealed 215 proteins positively-associated with WLZ (prominently those involved in musculoskeletal and CNS development) and 44 negatively-associated proteins (related to immune activation), with a significant enrichment in levels of the positively WLZ-associated proteins in the MDCF-2 arm. Characterizing changes in 754 bacterial metagenome-assembled genomes in serially collected fecal samples disclosed the effects of acute rehabilitation for SAM on the microbiome, its transition as each child achieves a state of MAM, and how specific strains of Prevotella copri function at the intersection between MDCF-2 glycan metabolism and the rescue of growth faltering. These results provide a rationale for further testing the generalizability of the efficacy of MDCF and identify biomarkers for defining treatment responses.

10.
Acta Med Philipp ; 58(4): 83-87, 2024.
Article de Anglais | MEDLINE | ID: mdl-38966610

RÉSUMÉ

Electrical status epilepticus during sleep (ESES) is an electrographic pattern associated with specific genetic disorders, brain malformations, and use of some antiseizure medications. This case report aims to present the management of ESES in Sotos syndrome (SoS) on carbamazepine. A nine-year-old Filipino male with clinical features suggestive of overgrowth syndrome presented with febrile seizure at one year old. Cranial imaging showed cavum septum pellucidum, corpus callosal dysgenesis, and ventriculomegaly. He was on carbamazepine monotherapy starting at three years old. A near continuous diffuse spike-wave discharges in slow wave sleep was recorded at nine years old hence shifted to valproic acid. Follow-up study showed focal epileptiform discharges during sleep with disappearance of ESES. Next generation sequencing tested positive for rare nonsense mutation of nuclear receptor binding set-domain protein 1 confirming the diagnosis of SoS. Advanced molecular genetics contributed to determination of ESES etiologies. To date, this is the first documented case of SoS developing ESES. Whether an inherent genetic predisposition or drug-induced, we recommend the avoidance of carbamazepine and use of valproic acid as first-line therapy.

11.
Nat Protoc ; 2024 Jul 18.
Article de Anglais | MEDLINE | ID: mdl-39026121

RÉSUMÉ

Carbohydrates comprise the largest fraction of most diets and exert a profound impact on health. Components such as simple sugars and starch supply energy, while indigestible components, deemed dietary fiber, reach the colon to provide food for the tens of trillions of microbes that make up the gut microbiota. The interactions between dietary carbohydrates, our gastrointestinal tracts, the gut microbiome and host health are dictated by their structures. However, current methods for analysis of food glycans lack the sensitivity, specificity and throughput needed to quantify and elucidate these myriad structures. This protocol describes a multi-glycomic approach to food carbohydrate analysis in which the analyte might be any food item or biological material such as fecal and cecal samples. The carbohydrates are extracted by ethanol precipitation, and the resulting samples are subjected to rapid-throughput liquid chromatography (LC)-tandem mass spectrometry (LC-MS/MS) methods. Quantitative analyses of monosaccharides, glycosidic linkages, polysaccharides and alcohol-soluble carbohydrates are performed in 96-well plates at the milligram scale to reduce the biomass of sample required and enhance throughput. Detailed stepwise processes for sample preparation, LC-MS/MS and data analysis are provided. We illustrate the application of the protocol to a diverse set of foods as well as different apple cultivars and various fermented foods. Furthermore, we show the utility of these methods in elucidating glycan-microbe interactions in germ-free and colonized mice. These methods provide a framework for elucidating relationships between dietary fiber, the gut microbiome and human physiology. These structures will further guide nutritional and clinical feeding studies that enhance our understanding of the role of diet in nutrition and health.

12.
Food Nutr Bull ; : 3795721241250104, 2024 Jul 30.
Article de Anglais | MEDLINE | ID: mdl-39077991

RÉSUMÉ

BACKGROUND: A randomized controlled trial in Bangladeshi children aged 12 to 18 months with moderate acute malnutrition found that dietary supplementation with the microbiota-directed complementary food (MDCF-2) significantly improved weight gain and repaired gut microbiota compared to the ready-to-use supplementary food. However, the MDCF-2 formulation was made daily from locally available ingredients and the need for a packaged, nutritionally compliant, and organoleptically acceptable MDCF-2 prototype was essential for future large-scale clinical studies. OBJECTIVE: The study aimed to develop and assess the acceptability of 3 alternative foil-packaged formulations of MDCF-2 in comparison to current MDCF-2. METHODS: Of the 3 packaged formulations, the Jumpstart version was provided in 2 sachets, the other 2 formulations were provided in a retort-stable foil pouch extended by sterilization, and microbiological growth was monitored over 10 months. The acceptability study included 40 children aged 8 to 12 months living in an urban slum in Dhaka, and the organoleptic properties were assessed using a 7-point hedonic scale. RESULTS: In the 100 g distributed over the 2 sessions, children consumed 82.5 ± 7.84 g (mean ± SD) of kitchen-prepared MDCF-2, 85.4 ± 7.15 g of the "Jumpstart" MDCF-2 formulation, 85.4 ± 8.70 g of the MDCF-2 with green banana powder, and 86.2 ± 4.26 g of the MDCF-2 with sweet potato formulation. The "Jumpstart" MDCF-2 and MDCF-2 with sweet potato achieved the highest overall acceptability scores on the hedonic scale; although none of the shelf-stable formulations were significantly different from the kitchen-prepared MDCF-2. CONCLUSIONS: Packaged, shelf-stable prototypes of MDCF-2 exhibited comparable acceptability among Bangladeshi children aged 8 to 12 months to the original freshly prepared formulation.


Plain language titleDevelopment and Acceptability of Shelf-Stable Microbiota-Directed Complementary FoodsPlain language summaryCountries around the world are making progress in fighting malnutrition, but it may be challenging to achieve the global nutrition targets for undernourished children by 2025 at the current rate. To address this problem, we need special types of food that can help children grow, develop properly, and sustain their growth. Children with moderate acute malnutrition have imbalanced gut bacteria. By providing them with the right nutrition, we can restore the healthy bacteria in their gut using a special food called microbiota-directed complementary food (MDCF). Currently, this food is made daily in the icddr, b established field kitchen, which follows standard production measures to control the quality of MDCF preparation, but we need to create stable prototypes that can be stored and used in different settings. This study was designed to develop shelf-stable new formulations in industrial settings and check their acceptability among children with moderate acute malnutrition. The shelf life of the food was extended using a sterilization method, and its microbiological safety was monitored for a year. The actual consumption and acceptability of these foods were evaluated and all these formulations were acceptable by the children and their mother. The children consumed all 4 food formulations in substantial quantities, with consumption rates exceeding 80% for each formulation. This study showed positive results in Bangladesh, but more research is needed to see if these formulations work well in other geographies and over longer periods.

13.
Appl Neuropsychol Child ; : 1-9, 2024 Jun 12.
Article de Anglais | MEDLINE | ID: mdl-38864448

RÉSUMÉ

OBJECTIVE: Youth with neurofibromatosis type I (NF1) demonstrate high rates of Autism Spectrum Disorder (ASD) and Attention Deficit/Hyperactivity Disorder (ADHD), which often have overlapping behaviors. Diagnostic clarity is important to guide services. This study evaluated ASD classification in NF1 using various methods and whether those with ADHD suspicion have more social challenges associated with ASD. METHOD: 34 youth with NF1 (Mage = 10.5 ± 1.6 years), completed ASD assessments that combined direct observation and informant ratings to yield a Clinician Best Estimate (CBE) classification. Caregivers rated ASD-related social challenges using the Social Responsiveness Scale- 2nd Edition (SRS-2). RESULTS: ASD classification varied depending on the method, ranging from 32% using low-threshold SRS-2 cut-scores (T ≥ 60) to under 6% when combining cut scores for diagnostic observational tools and stringent SRS-2 cut-scores (T ≥ 70). 14.7% had a CBE ASD classification. 44% were judged to have autism traits associated with a non-ASD diagnosis. The 52.9% with a suspicion of ADHD had higher SRS-2 scores than those without ADHD, F (7, 26) = 3.45, p < .05, Wilk's lambda = 0.518, partial eta squared = 0.482. CONCLUSIONS: Findings highlight the importance of rigorous diagnostic methodology when evaluating ASD in NF1 to inform the selection of targeted interventions for socialization challenges in NF1.

14.
Front Oncol ; 14: 1287479, 2024.
Article de Anglais | MEDLINE | ID: mdl-38884083

RÉSUMÉ

Purpose: To identify significant relationships between quantitative cytometric tissue features and quantitative MR (qMRI) intratumorally in preclinical undifferentiated pleomorphic sarcomas (UPS). Materials and methods: In a prospective study of genetically engineered mouse models of UPS, we registered imaging libraries consisting of matched multi-contrast in vivo MRI, three-dimensional (3D) multi-contrast high-resolution ex vivo MR histology (MRH), and two-dimensional (2D) tissue slides. From digitized histology we generated quantitative cytometric feature maps from whole-slide automated nuclear segmentation. We automatically segmented intratumoral regions of distinct qMRI values and measured corresponding cytometric features. Linear regression analysis was performed to compare intratumoral qMRI and tissue cytometric features, and results were corrected for multiple comparisons. Linear correlations between qMRI and cytometric features with p values of <0.05 after correction for multiple comparisons were considered significant. Results: Three features correlated with ex vivo apparent diffusion coefficient (ADC), and no features correlated with in vivo ADC. Six features demonstrated significant linear relationships with ex vivo T2*, and fifteen features correlated significantly with in vivo T2*. In both cases, nuclear Haralick texture features were the most prevalent type of feature correlated with T2*. A small group of nuclear topology features also correlated with one or both T2* contrasts, and positive trends were seen between T2* and nuclear size metrics. Conclusion: Registered multi-parametric imaging datasets can identify quantitative tissue features which contribute to UPS MR signal. T2* may provide quantitative information about nuclear morphology and pleomorphism, adding histological insights to radiological interpretation of UPS.

16.
EBioMedicine ; 104: 105166, 2024 Jun.
Article de Anglais | MEDLINE | ID: mdl-38833839

RÉSUMÉ

BACKGROUND: Globally, stunting affects ∼150 million children under five, while wasting affects nearly 50 million. Current interventions have had limited effectiveness in ameliorating long-term sequelae of undernutrition including stunting, cognitive deficits and immune dysfunction. Disrupted development of the gut microbiota has been linked to the pathogenesis of undernutrition, providing potentially new treatment approaches. METHODS: 124 Bangladeshi children with moderate acute malnutrition (MAM) enrolled (at 12-18 months) in a previously reported 3-month RCT of a microbiota-directed complementary food (MDCF-2) were followed for two years. Weight and length were monitored by anthropometry, the abundances of bacterial strains were assessed by quantifying metagenome-assembled genomes (MAGs) in serially collected fecal samples and levels of growth-associated proteins were measured in plasma. FINDINGS: Children who had received MDCF-2 were significantly less stunted during follow-up than those who received a standard ready-to-use supplementary food (RUSF) [linear mixed-effects model, ßtreatment group x study week (95% CI) = 0.002 (0.001, 0.003); P = 0.004]. They also had elevated fecal abundances of Agathobacter faecis, Blautia massiliensis, Lachnospira and Dialister, plus increased levels of a group of 37 plasma proteins (linear model; FDR-adjusted P < 0.1), including IGF-1, neurotrophin receptor NTRK2 and multiple proteins linked to musculoskeletal and CNS development, that persisted for 6-months post-intervention. INTERPRETATION: MDCF-2 treatment of Bangladeshi children with MAM, which produced significant improvements in wasting during intervention, also reduced stunting during follow-up. These results suggest that the effectiveness of supplementary foods for undernutrition may be improved by including ingredients that sponsor healthy microbiota-host co-development. FUNDING: This work was supported by the BMGF (Grants OPP1134649/INV-000247).


Sujet(s)
Microbiome gastro-intestinal , Humains , Nourrisson , Femelle , Mâle , Bangladesh/épidémiologie , Fèces/microbiologie , Métagénome , Troubles de la croissance/étiologie
17.
Article de Anglais | MEDLINE | ID: mdl-38839729

RÉSUMÉ

INTRODUCTION: Disparities based on perceived race and ethnicity exist in all fields of medicine. Accurate data collection is crucial to addressing these disparities, yet few studies have evaluated the validity of data gathered. This study compares self-reported race and ethnicity data, considered the gold standard, with data documented in the electronic health record (EHR), to assess the validity of that data. METHODS: Data from self-reported questionnaires was collected from adolescents admitted to a psychiatric inpatient unit from February 2019 to July 2022. Demographic questionnaires were self-administered as part of a larger battery completed during the admission process. Data was compared to demographic information collected from the hospital's EHR for the same patients and time. RESULTS: In a sample of 1191 patients (ages 11-18, 61.9% female, 89% response rate), substantial agreement was observed for Hispanic ethnicity (κ = 0.64), while agreement for specific racial groups ranged from slight to substantial (κ = 0.10-0.63). In addition, it was noted that there was discrepancy between multiracial identification, with 17.1% of patients identifying as more than one race in self-reported data compared to 3.1% in EHR data. CONCLUSIONS: The findings from this data set highlight the need for caution when using EHR data to draw conclusions about health disparities. It also suggests that the method of data collection meaningfully influences the responses patients provide. Addressing these challenges is essential for advancing equitable healthcare and mitigating disparities among patients.

18.
Bleeding Thromb Vasc Biol ; 3(Suppl 1)2024.
Article de Anglais | MEDLINE | ID: mdl-38828226

RÉSUMÉ

Comprehensive protein analyses of plasma are made possible by high-throughput proteomic screens, which may help find new therapeutic targets and diagnostic biomarkers. Patients with cancer are frequently affected by venous thromboembolism (VTE). The limited predictive accuracy of current VTE risk assessment tools highlights the need for new, more targeted biomarkers. Although coagulation biomarkers for the diagnosis, prognosis, and treatment of VTE have been investigated, none of them have the necessary clinical validation or diagnostic accuracy. Proteomics holds the potential to uncover new biomarkers and thrombotic pathways that impact the risk of thrombosis. This review explores the fundamental methods used in proteomics and focuses on particular biomarkers found in VTE and cancer-associated thrombosis.

19.
Sci Rep ; 14(1): 12010, 2024 05 26.
Article de Anglais | MEDLINE | ID: mdl-38796561

RÉSUMÉ

Venous thromboembolism (VTE) is the leading cause of preventable death in hospitalized patients. Artificial intelligence (AI) and machine learning (ML) can support guidelines recommending an individualized approach to risk assessment and prophylaxis. We conducted electronic surveys asking clinician and healthcare informaticians about their perspectives on AI/ML for VTE prevention and management. Of 101 respondents to the informatician survey, most were 40 years or older, male, clinicians and data scientists, and had performed research on AI/ML. Of the 607 US-based respondents to the clinician survey, most were 40 years or younger, female, physicians, and had never used AI to inform clinical practice. Most informaticians agreed that AI/ML can be used to manage VTE (56.0%). Over one-third were concerned that clinicians would not use the technology (38.9%), but the majority of clinicians believed that AI/ML probably or definitely can help with VTE prevention (70.1%). The most common concern in both groups was a perceived lack of transparency (informaticians 54.4%; clinicians 25.4%). These two surveys revealed that key stakeholders are interested in AI/ML for VTE prevention and management, and identified potential barriers to address prior to implementation.


Sujet(s)
Intelligence artificielle , Thromboembolisme veineux , Humains , Thromboembolisme veineux/prévention et contrôle , Femelle , Mâle , Adulte , Adulte d'âge moyen , Enquêtes et questionnaires , Apprentissage machine , Appréciation des risques , Médecins
20.
JPEN J Parenter Enteral Nutr ; 48(5): 546-553, 2024 Jul.
Article de Anglais | MEDLINE | ID: mdl-38734876

RÉSUMÉ

Obesity is a challenging chronic disease process that continues to affect a large percentage of the population at large. With the advent of new therapeutic options and interventions and a deeper scientific understanding of obesity as a complex illness, there is hope in curtailing this evolving pandemic. In this article, we present key medical information to engage and empower nutrition-focused providers to manage obesity and its nutrition complications. The topics summarized here were presented during the 2023 American Society for Parenteral and Enteral Nutrition Preconference Physician Course and include pathophysiology and hormonal regulation of obesity, multidisciplinary care planning and nutrition risk stratification of patients, and common approaches to treatment, including lifestyle modifications, antiobesity medications, and procedures from the perspective of the nutrition specialist.


Sujet(s)
Obésité , Humains , Obésité/thérapie , Agents antiobésité/usage thérapeutique , Médecins , Nutrition parentérale/méthodes , Mode de vie , Nutrition entérale/méthodes , Nutritionnistes
SÉLECTION CITATIONS
DÉTAIL DE RECHERCHE