Publications by authors named "Kern T"

Miniature actuators are utilized in various application fields, from robotics to medical devices, where compact dimensions, precise movements, and cost-effectiveness are crucial factors. Particularly for applications like braille displays, there is a critical demand for lightweight, portable, and affordable actuators to integrate into daily life for visually impaired people. However, existing actuation technologies such as electroactive polymers, electrorheological materials, and piezoelectric elements often do not meet the specific requirements of miniature actuators, especially for braille displays.

View Article and Find Full Text PDF

Clinical Relevance: Although diabetes is associated with a classic microvascular disease of the retina, it is also increasingly being recognized as a cause of retinal neuropathy. Preclinical evidence suggests that retinal neuropathy in diabetes manifests in part as photoreceptor dysfunction, preceding the development of vascular features in experimental models. It remains unknown whether such findings are relevant to patients with diabetes.

View Article and Find Full Text PDF
Article Synopsis
  • The study explores how host genome variants influence oral microbial communities, linking the mouth's bacteria to both oral and overall health in 610 Danish adults.
  • Researchers identified six specific single nucleotide polymorphisms (SNPs) associated with varying abundances of oral bacteria and found that one SNP significantly exceeded the study's significance threshold.
  • The findings suggest a complex relationship between genetics, oral microbiota, and metabolic health, indicating a need for combined studies in these areas to better understand health outcomes.
View Article and Find Full Text PDF

Latent autoimmune diabetes in adults (LADA) is a heterogeneous disease characterized by autoantibodies against insulin producing pancreatic beta cells and initial lack of need for insulin treatment. The aim of the present study was to investigate if individuals with LADA have an altered gut microbiota relative to non-diabetic control subjects, individuals with type 1 diabetes (T1D), and individuals with type 2 diabetes (T2D). Bacterial community profiling was performed with primers targeting the variable region 4 of the 16S rRNA gene and sequenced.

View Article and Find Full Text PDF

Introduction: Lumbosacral radiculopathy (LR), also known as sciatica, is a common type of radiating neurologic pain involving burning, tingling, and numbness in the lower extremities. It has an estimated lifetime prevalence as high as 43%.

Objectives: The objective of this randomized controlled trial was to evaluate the impact of virtually delivered Mindfulness-Oriented Recovery Enhancement (MORE) on patients with LR during the COVID-19 pandemic.

View Article and Find Full Text PDF

Introduction: The mental health of young people has been severely affected by the COVID-19 pandemic and the measures associated with it. Mental health symptoms increased across various domains during the pandemic and subjective wellbeing decreased.

Methods: This study examined the burdens and resources of Austrian school students ( = 16.

View Article and Find Full Text PDF
Article Synopsis
  • Understanding how injury healing works is still a bit unclear, but recent studies highlighted the importance of C3a and C5a receptor signaling in various cell types' growth and repair processes.
  • Disabling CD55, a factor that restrains C3ar1/C5ar1 signaling, was found to significantly boost cell growth and healing in different injury models like burns and skin reengraftment.
  • The application of a CD55 blocking antibody improved healing rates by 40-70%, suggesting a promising new approach for enhancing wound repair.
View Article and Find Full Text PDF

Vascular inflammation is known to cause degeneration of retinal capillaries in early diabetic retinopathy (DR), a major microvascular complication of diabetes. Past studies investigating these diabetes-induced retinal vascular abnormalities have focused primarily on the role of molecular or biochemical cues. Here we show that retinal vascular inflammation and degeneration in diabetes are also mechanically regulated by the increase in retinal vascular stiffness caused by overexpression of the collagen-cross-linking enzyme lysyl oxidase (LOX).

View Article and Find Full Text PDF

Radiotherapy (RT) in combination with deep regional hyperthermia (HT) after transurethral removal of bladder tumor (TURBT) can be offered to elderly and frail patients with muscle-invasive bladder cancer (MIBC). In total, 21 patients (mean age 84 years) with unifocal or multifocal MIBC received radiation to a dose of 48-50 Gy/16-20 fractions with weekly HT. The primary endpoint was the variation in temperature metrics, thermal dose expressed as cumulative equivalent minutes at 43 °C when the measured temperature is T (CEM43T) and net power applied in target volume per each HT session.

View Article and Find Full Text PDF
Article Synopsis
  • Treating defects in long bones poses significant challenges in trauma and orthopedic surgery, influenced by various factors such as the size of the defect, patient condition, and specific circumstances surrounding the injury.
  • For defects larger than 2-3 cm, bony reconstruction is often necessary, while smaller defects may be managed through acute shortening or bone grafting options.
  • The review highlights repair techniques that aim for anatomical restoration, using methods like distraction osteogenesis, and reconstructive techniques that involve autologous bone grafting, emphasizing the preference for these over allografts due to potential outcomes.
View Article and Find Full Text PDF

In this study, we present a tomography-based control system for a rehabilitation robot using a novel approach to assess advancement and a dynamic model of the system. In this model, the torque generated by the robot and the impedance of the patient's hand are used to determine each step of the rehabilitation. In the proposed control architecture, a regression model is developed and implemented based on the extraction of tomography signals to estimate the muscles state.

View Article and Find Full Text PDF

Background: A novel method for trapping voles is the use of pistol-like explosive tools loaded with bolt-action ammunition. When triggered the vole is killed by the very high gas pressure created. Accidental releases can result in facial and/or eye injuries.

View Article and Find Full Text PDF

Objective: This study aimed to determine whether dogs with shoulder tendinopathy diagnosed via musculoskeletal ultrasound would show improvement in imaging after treatment using piezoelectric shockwave therapy and rest.

Methods: Medical records were reviewed for dogs diagnosed with biceps and/or supraspinatus tendinopathy musculoskeletal ultrasound, treated using piezowave shockwave, and re-imaged post-treatment. Data collected included patient signalment, duration and grade of lameness, prior rest, piezowave dose, and patient outcome, including a return to sport where applicable.

View Article and Find Full Text PDF
Article Synopsis
  • This study aimed to identify factors that predict a good response to low-dose radiotherapy (LDRT) in patients suffering from greater trochanteric pain syndrome (GTPS).
  • Patients received LDRT at doses of 0.5-1.0 Gy per fraction, and a good response was noted if there was significant pain relief after two months, assessed by the von Pannewitz score.
  • Results showed that prior pain relief from steroid injections, receiving two series of LDRT, and not having structural abnormalities significantly increased the chances of a good response to the treatment.
View Article and Find Full Text PDF

Licensed rabies virus vaccines based on whole inactivated virus are effective in humans. However, there is a lack of detailed investigations of the elicited immune response, and whether responses can be improved using novel vaccine platforms. Here we show that two doses of a lipid nanoparticle-formulated unmodified mRNA vaccine encoding the rabies virus glycoprotein (RABV-G) induces higher levels of RABV-G specific plasmablasts and T cells in blood, and plasma cells in the bone marrow compared to two doses of Rabipur in non-human primates.

View Article and Find Full Text PDF

Chronic, progressive retinal diseases, such as age-related macular degeneration (AMD), diabetic retinopathy, and retinitis pigmentosa, arise from genetic and environmental perturbations of cellular and tissue homeostasis. These disruptions accumulate with repeated exposures to stress over time, leading to progressive visual impairment and, in many cases, legal blindness. Despite decades of research, therapeutic options for the millions of patients suffering from these disorders remain severely limited, especially for treating earlier stages of pathogenesis when the opportunity to preserve the retinal structure and visual function is greatest.

View Article and Find Full Text PDF

In this white paper, key recommendations for visitation by children in intensive care units (ICU; both pediatric and adult), intermediate care units and emergency departments (ED) are presented. In ICUs and EDs in German-speaking countries, the visiting policies for children and adolescents are regulated very heterogeneously: sometimes they are allowed to visit patients without restrictions in age and time duration, sometimes this is only possible from the age of teenager on, and only for a short duration. A request from children to visit often triggers different, sometimes restrictive reactions among the staff.

View Article and Find Full Text PDF

Unlabelled: Endothelial cell (EC) activation is a crucial determinant of retinal vascular inflammation associated with diabetic retinopathy (DR), a major microvascular complication of diabetes. We previously showed that, similar to abnormal biochemical factors, aberrant mechanical cues in the form of lysyl oxidase (LOX)-dependent subendothelial matrix stiffening also contribute significantly to retinal EC activation in diabetes. Yet, how LOX is itself regulated and precisely how it mechanically controls retinal EC activation in diabetes is poorly understood.

View Article and Find Full Text PDF

Purpose: Limited research exists on the time course of long-term retinal and cerebral deficits in diabetic rodents. Previously, we examined short term (4-8 weeks) deficits in the Goto-Kakizaki (GK) rat model of Type II diabetes. Here, we investigated the long-term (1-8 months) temporal appearance of functional deficits (retinal, cognitive, and motor), retinal vascular pathology, and retinal dopamine levels in the GK rat.

View Article and Find Full Text PDF

The gut microbiota impacts systemic levels of multiple metabolites including NAD precursors through diverse pathways. Nicotinamide riboside (NR) is an NAD precursor capable of regulating mammalian cellular metabolism. Some bacterial families express the NR-specific transporter, PnuC.

View Article and Find Full Text PDF

Hyperthermia (HT) in combination with radio(chemo)therapy (RCT) is a well-established cancer treatment strategy. This report analyses the quality of life (QoL), toxicity and survival outcomes in patients with different tumor entities who received HT in combination with RCT. The primary endpoint of this study was the assessment of QoL scale items 3 and 12 months after treatment in patients who were treated with palliative intent and curative intent, respectively.

View Article and Find Full Text PDF