Publications by authors named "NAGEL C"

Warmblood sires traditionally have been presented for stallion licencing at 2 years of age, but the age at which horses are mentally fit for training is a point of controversy. We have therefore investigated the stress response of young stallions to pretraining for licencing. Salivary cortisol concentration, heart rate and heart rate variability (HRV) were determined repeatedly over 12 weeks.

View Article and Find Full Text PDF

Background: Emerging evidence indicates that cyclic nucleotide phosphodiesterases exert distinct functions in pain processing and that targeting phosphodiesterases might be a novel strategy for pain relief. This study hypothesized that the phosphodiesterase isoform PDE10A might be a target for analgesic therapy.

Methods: In situ hybridization, immunostaining, cyclic nucleotide enzyme immunoassays, real-time cyclic guanosine monophosphate imaging, and real-time quantitative reverse transcription polymerase chain reaction were performed to investigate the expression and activity of PDE10A in the dorsal root ganglia and spinal cord.

View Article and Find Full Text PDF

Objective: We examined associations among changes in anthropometry, regional adiposity, and inflammatory markers in Black and White women participating in intentional weight loss.

Methods: A total of 104 women with BMI ≥ 25 kg/m self-selected bariatric surgery (n = 66) or a diet and exercise program (n = 38). Anthropometric, dual-energy x-ray absorptiometry-quantified regional adiposity, and inflammatory markers (C-reactive protein [CRP], tumor necrosis factor α [TNF-α], soluble TNF receptor I [sTNFRI], sTNFRII, interleukin [IL]-6, and soluble IL-1 receptor antagonist) were measured at baseline and 6 months.

View Article and Find Full Text PDF
Article Synopsis
  • Multimorbidity, the presence of two or more chronic diseases, is a significant public health issue, especially among adults in socially deprived areas who face higher disease burdens and limited resources.
  • A study analyzed electronic health record data from over 816,000 patients using mixed-effects Poisson regression to explore the link between social deprivation and chronic disease accumulation across the U.S.
  • Results showed that people in more deprived areas had higher initial chronic disease counts, although they tended to accumulate additional diseases more slowly, highlighting the need to consider social factors in public health strategies.
View Article and Find Full Text PDF

Background: Person-centered approaches to measuring severity of multimorbidity (≥ 2 chronic conditions) can help clinicians assess the individual experience of multimorbidity and inform effective caregiving and intervention strategies. We examine how limitations in everyday activities attributable to specific chronic conditions act independently and in tandem to influence individual perceptions of multimorbidity severity.

Methods: Data from the Panel Study of Income Dynamics (2005-2021) were used to investigate self-reported limitations in normal daily activities resulting from nine chronic conditions (hypertension, arthritis, diabetes, heart condition [heart disease/heart attack], cancer, lung disease, stroke, depression, and memory loss) in 4 318 adults aged 55-95 (18 878 person-wave observations).

View Article and Find Full Text PDF

Background: The impact of multimorbidity (≥ 2 chronic diseases) on the well-being of older adults is substantial but variable. The burden of multimorbidity varies by the number and kinds of conditions, and timing of onset. The impact varies by age, race, ethnicity, socioeconomic status, and health indicators.

View Article and Find Full Text PDF

Schools of nursing are struggling to prepare registered nurses to practice in today's complex healthcare settings. Nurse residency programs are a good solution to support the transition to practice. Nursing education leaders must be informed of the nursing quality and safety outcomes of nurse residency programs.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to compare the effectiveness and side effects of two chemotherapy regimens, paclitaxel and carboplatin (PC), against bleomycin, etoposide, and cisplatin (BEP) in treating newly diagnosed or recurrent ovarian sex cord-stromal tumors (SCST).
  • In a phase II trial involving 63 patients, the analysis showed that PC did not meet the criteria for being as effective as BEP, with a median progression-free survival of 27.7 months for PC compared to 19.7 months for BEP.
  • Although PC had fewer serious adverse events (77% vs. 90%), the study concluded that it failed to demonstrate non-inferiority to BE
View Article and Find Full Text PDF
Article Synopsis
  • * Research has identified specific protein aggregates in the brains of ADRD and heart disease patients, which may contribute to chronic neuroinflammation and neurodegeneration.
  • * The study suggests that the FDA-approved drug ezetimibe can disrupt the harmful interaction between two proteins, potentially lowering the risk of ADRD and slowing disease progression, particularly in those with heart disease.
View Article and Find Full Text PDF

Understanding information processing biases is critical for improving scientific literacy. Research suggests that people rate scientific explanations with reductive jargon (e.g.

View Article and Find Full Text PDF

The design and optimization of laser-Compton x-ray systems based on compact distributed charge accelerator structures can enable micron-scale imaging of disease and the concomitant production of beams of Very High Energy Electrons (VHEEs) capable of producing FLASH-relevant dose rates. The physics of laser-Compton x-ray scattering ensures that the scattered x-rays follow exactly the trajectory of the incident electrons, thus providing a route to image-guided, VHEE FLASH radiotherapy. The keys to a compact architecture capable of producing both laser-Compton x-rays and VHEEs are the use of X-band RF accelerator structures which have been demonstrated to operate with over 100 MeV/m acceleration gradients.

View Article and Find Full Text PDF

The unimolecular heterolysis of covalent σ-bonds is integral to many chemical transformations, including S1-, E1- and 1,2-migration reactions. To a first approximation, the unequal redistribution of electron density during bond heterolysis is governed by the difference in polarity of the two departing bonding partners. This means that if a σ-bond consists of two identical groups (that is, symmetric σ-bonds), its unimolecular fission from the S, S, or T states only occurs homolytically after thermal or photochemical activation.

View Article and Find Full Text PDF

Background: Acute kidney injury (AKI) occurs in up to half of infants admitted to the neonatal intensive care unit (NICU) and is associated with increased risks of death and more days of mechanical ventilation, hospitalization, and vasopressor drug support. Our objective was to build a granular relational database to study the impact that AKI has on infants admitted to Level-IV NICUs.

Methods: A relational database was created by linking data from the Children's Hospitals Neonatal Database with AKI-focused data from electronic health records from 9 centers.

View Article and Find Full Text PDF

Climate change, with its profound effects on stream sediment, hydrological, and temperature dynamics, will exacerbate impacts on habitat conditions for many species, particularly those with vulnerable early life stages relying on the hyporheic zone, such as gravel-spawning fishes. Due to the complex and interactive nature of multiple stressor effects, we employed large-scale outdoor mesocosms to systemically test how the reproductive success of three gravel-spawning fish species brown trout (Salmo trutta), nase, (Chrondrostoma nasus) and Danube salmon (Hucho hucho) was affected by individual and combined effects of warming (+3-4 °C), fine sediment (increase in <0.85 mm by 22 %) and low-flow (eightfold discharge-reduction).

View Article and Find Full Text PDF
Article Synopsis
  • * The study involved 308 wildtype and 31 hereditary ATTR-CM patients, revealing significant health metrics deterioration in most, but only 9% showed disease progression based on ESC criteria.
  • * Conclusions indicate that while most patients did not experience significant disease progression within a year, treatment response did not correlate with improved survival, and higher NT-proBNP levels at diagnosis predicted poorer outcomes.
View Article and Find Full Text PDF

Background: Older adults with varying patterns of multimorbidity may require distinct types of care and rely on informal caregiving to meet their care needs. This study aims to identify groups of older adults with distinct, empirically-determined multimorbidity patterns and compare characteristics of informal care received among estimated classes.

Methods: Data are from the 2011 National Health and Aging Trends Study (NHATS).

View Article and Find Full Text PDF

Aims: Patients with persistent atrial fibrillation (AF) experience 50% recurrence despite pulmonary vein isolation (PVI), and no consensus is established for secondary treatments. The aim of our i-STRATIFICATION study is to provide evidence for stratifying patients with AF recurrence after PVI to optimal pharmacological and ablation therapies, through in silico trials.

Methods And Results: A cohort of 800 virtual patients, with variability in atrial anatomy, electrophysiology, and tissue structure (low-voltage areas, LVAs), was developed and validated against clinical data from ionic currents to electrocardiogram.

View Article and Find Full Text PDF

Low grade serous carcinoma of the ovary has been delineated as a separate entity from its counterpart high grade serous carcinoma of the ovary. Molecular profiling has helped to further characterize this disease process and has led to new and exciting treatment options. Surgery has always been a cornerstone of management both in primary and recurrent disease settings.

View Article and Find Full Text PDF

Background: Persistent Physical Symptoms (PPS) include symptoms such as chronic pain, and syndromes such as chronic fatigue. They are common, but are often inadequately managed, causing distress and higher costs for health care systems. A lack of teaching about PPS has been recognised as a contributing factor to poor management.

View Article and Find Full Text PDF

Introduction: Multimorbidity may confer higher risk for cognitive decline than any single constituent disease. This study aims to identify distinct trajectories of cognitive impairment probability among middle-aged and older adults, and to assess the effect of changes in mental-somatic multimorbidity on these distinct trajectories.

Methods: Data from the Health and Retirement Study (1998-2016) were employed to estimate group-based trajectory models identifying distinct trajectories of cognitive impairment probability.

View Article and Find Full Text PDF

Background: The rapidly growing field of multimorbidity research demonstrates that changes in multimorbidity in mid- and late-life have far reaching effects on important person-centered outcomes, such as health-related quality of life. However, there are few organizing frameworks and comparatively little work weighing the merits and limitations of various quantitative methods applied to the longitudinal study of multimorbidity.

Methods: We identify and discuss methods aligned to specific research objectives with the goals of (i) establishing a common language for assessing longitudinal changes in multimorbidity, (ii) illuminating gaps in our knowledge regarding multimorbidity progression and critical periods of change, and (iii) informing research to identify groups that experience different rates and divergent etiological pathways of disease progression linked to deterioration in important health-related outcomes.

View Article and Find Full Text PDF
Article Synopsis
  • Cardiac transthyretin amyloidosis (ATTR) is a deadly heart disease caused by amyloid fibril buildup, with two forms: hereditary (ATTRv) and wild-type (ATTRwt).
  • Current guidelines suggest using ACE inhibitors and beta-blockers for heart failure treatment in symptomatic patients, regardless of the cause, but their effectiveness specifically for ATTR remains unclear.
  • A study of 403 patients found that while heart failure therapy improved survival for those with ATTRwt and certain comorbidities, survival was significantly shorter for those with ATTRv undergoing the same treatment.
View Article and Find Full Text PDF

Pediatric and adolescent ovarian lesions are common and are frequently managed by both pediatric surgeons and pediatric and adolescent gynecologists. During the 2023 American Academy of Pediatric Section on Surgery meeting, an educational symposium was delivered focusing on various aspects of management of pediatric and adolescent benign and malignant masses, borderline lesions, and fertility options for children and adolescents undergoing cancer therapies. This article highlights the discussion during this symposium.

View Article and Find Full Text PDF

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/policies/article-withdrawal).

View Article and Find Full Text PDF