Cystic fibrosis (CF) is a genetic disorder caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) that controls chloride current. A number of different CFTR transgenic mouse lines have been developed and subjected to both acute and chronic infection models. However, prior studies showed no substantial differences in bacterial clearance between CF and non-CF mice after single inoculations. Here, using F508del transgenic CF mice, we examined the role of repeated acute (PA) infection, with the second inoculation 7 days after the first. We found that CF mice were more susceptible to PA infection than non-CF mice following the second inoculation, with non-CF mice showing better neutrophil recruitment and effector functions. We further investigated the characteristics of lung immune cells using single-cell RNA sequencing, finding that non-CF lung neutrophils had more prominent upregulation of adhesion molecules including intercellular adhesion molecule-1 (ICAM-1) compared to CF lung neutrophils. Although people with CF are often colonized with bacteria and have high numbers of neutrophils in the airways during chronic infection, these data suggest that CF neutrophils have deficient effector functions in the setting of repeated acute infection.
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http://dx.doi.org/10.1155/2024/4769779 | DOI Listing |
PLoS One
January 2025
School of Human Nutrition, McGill University, Montreal, Québec, Canada.
Objective: Managing blood glucose levels is challenging for elite athletes with type 1 diabetes (T1D) as competition can cause unpredictable fluctuations. While fear of hypoglycemia during physical activity is well documented, research on hyperglycemia-related anxiety (HRA) is limited. HRA refers to the heightened fear that hyperglycemia-related symptoms will impair functioning.
View Article and Find Full Text PDFCardiovasc Intervent Radiol
January 2025
Clínical Area of Medical Imaging and Biomedical Imaging Research Group (GIBI230), Hospital Universitario y Politécnico La Fe - Instituto de Investigación Sanitaria La Fe, Valencia, Spain.
Pediatric pain management presents unique challenges due to the intrinsic characteristics of children such as their developmental stages, communication barriers, and varying pain perceptions. Life-limiting conditions affecting children are a growing medical concern, requiring a comprehensive, multidisciplinary approach to improve quality of life or ensure a dignified end of life. Interventional radiology (IR) plays a critical role in this strategy, similar to its role in adult care.
View Article and Find Full Text PDFBioethics
January 2025
Centre for Biomedical Ethics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
Writers have debated whether germline genome-editing is person-affecting or identity-affecting. The difference is thought to be ethically relevant to whether we should choose genome-editing or choose preimplantation genetic diagnosis and embryo selection, when seeking to prevent or produce bad conditions (e.g.
View Article and Find Full Text PDFJ Pediatr Endocrinol Metab
January 2025
Department of Pediatric Pulmonology, Dicle University, Diyarbakır, Türkiye.
Objectives: There is limited research on thyroid function in pediatric patients with cystic fibrosis (pwCF). This study aimed to determine the frequency of thyroid dysfunction in children and adolescents with CF and to evaluate iodine deficiency and selenium status in pwCF.
Methods: Sixty-two CF patients and 62 control subjects were evaluated.
Scand J Med Sci Sports
January 2025
Department of Surgical Sciences, Dentistry, Gynaecology and Paediatrics, University of Verona, Verona, Italy.
Previous studies in sports science suggested that regular exercise has a positive impact on human health. However, the effects of endurance sports and their underlying mechanisms are still not completely understood. One of the main debates regards the modulation of immune dynamics in high-intensity exercise.
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