University of Zurich

Clinical Behaviour and Outcome of Pelvic Osteosarcoma in Dogs: A Retrospective Multicentre Analysis of 74 Cases (2007–2025)

Although osteosarcoma is the most common primary bone tumour in dogs, involvement of the pelvic bones is rare. The aim of the present study was to describe clinical presentation, identify possible prognostic factors, and evaluate outcomes in dogs diagnosed with pelvic osteosarcom...

Impact of Structured Data Validation on Case Completeness and Key Quality Indicators in the SWISS Implant Registry (SIRIS Spine): A SINGLE-CENTER Audit

Study design Retrospective single-center registry validation audit. Objective To quantify the impact of semi-automated, chart-adjudicated data validation workflow on case completeness and key quality indicators in the Swiss Implant Registry (SIRIS Spine). Methods All Swiss proced...

The clinical and molecular spectrum of AGO2-associated Lessel-Kreienkamp neurodevelopmental syndrome

Abstract Background Pathogenic variants in AGO2 ,encoding a central component of the RNA-induced silencing complex (RISC), cause the neurodevelopmental disorder Lessel-Kreienkamp syndrome (LESKRES). The variant spectrum and associated molecular mechanisms underlying phenotypic va...

Tracheal tuft cell-released leukotrienes promote antibacterial immune responses

SUMMARY Tuft cells act as crucial sentinels in the airways that detect bacterial metabolites. In response, tuft cells release signaling molecules that trigger immune responses essential for clearing the infection. The molecular mechanisms driving immune cell activation following...

Compositional neurosymbolic representations enable efficient active exploration

Abstract Autonomous systems that learn and explore over long horizons face a problem. Standard methods scale poorly in the number of observations, n , precluding sustained operation on bounded hardware. We show that compositional, high-dimensional vector representations inspired...

Little Red Dots host Black Hole Stars: A unified family of gas-reddened AGN revealed by JWST/NIRSpec spectroscopy

Abstract We construct and characterise a sample of 146 little red dots (LRDs) across 2.0 < z < 9.3, selecting all sources with v-shaped UV-optical continua from JWST NIRSpec/PRISM spectra and compact morphologies in NIRCam/F444W imaging. We show that LRD continuum spectra are wel...

Tmem117, an oligodendrocyte-enriched regulator of NCX activity, links myelin homeostasis to counterregulation and metabolic health

Abstract The counterregulatory response (CRR) to hypoglycemia is a fundamental, evolutionarily conserved homeostatic mechanism orchestrated by the central nervous system (CNS) to ensure survival during glucose scarcity. In individuals with diabetes, this response is frequently im...

Resolving circumarctic zero-curtain phenomena with AI-integrated earth observations

<title>Abstract</title> Across the circumarctic, permafrost landscapes store approximately 1700 billion metric tons of organic carbon - nearly twice atmospheric levels - yet reservoir stability depends on the zero-curtain, a subsurface thermal plateau that emerges when latent hea...

Does increased staging complexity influence expert agreement in dental age estimation?

Dental age estimation (DAE) is a well-established procedure in current practice, and it is frequently required in forensic and legal investigations. This study aimed to evaluate the intra- and inter-observer reliability of dental development staging among forensic practitioners u...

Ketamine’s impact on rumination-related brain dynamics: insights from a randomized controlled fMRI trial

Abstract Rumination has been associated with aberrant dynamics of a coactivation pattern (CAP) comprising the default mode (DMN) and frontoparietal (FPN) networks. Ketamine exerts rapid antidepressant effects and may influence these dynamics via glutamatergic mechanisms. In a ran...

The Association Between Chronic High-Altitude Exposure and Increased Pulmonary Vascular Resistance in Healthy High-Altitude Residents: A Systematic Review and Meta-Analysis

00:00-00, 2026. BACKGROUND: At high altitude, hypoxia triggers pulmonary vasoconstriction and vascular remodeling, potentially elevating pulmonary vascular resistance (PVR). Whether chronic high-altitude exposure raises PVR to clinically meaningful levels remain unclear, particul...

Brassinosteroid-regulated transcription factors confer epigenetic changes that repress plant immunity

Abstract When organisms encounter pathogens, they rapidly activate complex defense programs to ensure survival. While these immune responses are vital, they often also incur trade-offs, such as reduced growth and development and must therefore be tightly controlled 1,2 . In this...

Task-irrelevant stimuli robustly drive phasic pupil-linked arousal but only weakly affect memory formation

Abstract Brainstem arousal systems including the locus coeruleus noradrenaline system, respond transiently to behaviorally relevant events. This also drives dilations of the pupil, which are often observed during cognitive tasks. The strength of pupil responses during encoding of...

More than just green: the role of vegetation heterogeneity for species richness and multidiversity in urban green spaces

<title>Abstract</title> Urban green spaces (UGS) provide ecological, social, and climatic functions, yet their effectiveness depends not only on area but also on vertical spatial structure. We present a high-resolution urban green space typology (UGST) for four Swiss cities (Base...

Unveiling centromeric retrotransposon dynamics through a high-quality rye genome assembly

Abstract Rye ( Secale cereale L.) is an important cereal crop known for its high yield potential and tolerance to biotic and abiotic stresses. However, its large, repeat-rich, and heterozygous genome has posed challenges for assembly compared to related species such as wheat and...

Congenital cervical pathologies in the saber-toothed cat Smilodon fatalis and the cave bear Ursus spelaeus – Nearing extinction in Late Pleistocene times

Inbreeding is a known cause for an increased incidence of vertebral malformations. Inbreeding can be the result of geographical isolation of a diminishing wild population. A high incidence of transitional vertebrae has for example been reported in declining, inbred populations of...

Congenital cervical pathologies in the saber-toothed cat Smilodon fatalis and the cave bear Ursus spelaeus – Nearing extinction in Late Pleistocene times

Inbreeding is a known cause for an increased incidence of vertebral malformations. Inbreeding can be the result of geographical isolation of a diminishing wild population. A high incidence of transitional vertebrae has for example been reported in declining, inbred populations of...

A cross-cultural survey of Indigenous views on interspecies communication – Towards a consilience with scientific knowledge

Communication serves as a pivotal means for mutual understanding beyond species boundaries. Definitions of interspecific communication – particularly between humans and non-human organisms – vary not only across research disciplines, but also across cultures and societies driven...

Homicide at home: setting the agenda for an international collaboration to improve support for children bereaved due to family violence

Background: Bereavement due to fatal family violence (e.g. intimate partner homicide, filicide, parricide, siblicide) is a profoundly disruptive experience for children, with lifelong psychosocial consequences. Although the need for fatal family violence prevention is increasingl...

Validation of the AO Spine Osteoporotic Fracture Classification—effect of geographical region on reliability and reproducibility

Regional differences affect the reliability of the AO Spine-DGOU Osteoporotic Fracture Classification. European participants showed the highest agreement. This study underscores the need for addressing regional factors to improve the system’s global clinical utility. To evaluate...