University of Valparaíso

Acute Postprandial Glycemic and Antioxidant Responses to Maqui Berry Gummies in Adults with Overweight/Obesity: A Small Within-Subject Pilot Study

Maqui berry is rich in anthocyanins and has attracted interest as a functional food ingredient with potential metabolic and antioxidant effects. However, little is known about its acute postprandial effects in gummy formulations or whether microencapsulation modifies sensory or b...

Long‐Term Brightness Variations of Quiescent Dwarf Novae

ABSTRACT Dwarf novae (DNe) are true laboratories for accretion physics, since their gas disks can be observed and modeled during both outburst and quiescence in the same star. Most of past research was dedicated to DNe outbursts while their quiescent state was widely neglected. W...

Diagnostic accuracy of ultrasound, computed tomography, and magnetic resonance imaging for the evaluation of thyroid nodules

OBJECTIVES: This is a protocol for a Cochrane review (diagnostic). The objectives are as follows: To assess the diagnostic accuracy of US, CT, and MRI - each considered separately - in identifying malignant thyroid nodules, using histopathological examination as the reference sta...

Association between muscle quality index and time to stand up from the prone position in community-dwelling older adults

Both muscle strength and muscle quality are essential factors for preserving autonomy and functionality in older adults (OA). However, the relationship between muscle quality index (MQI) and the time to stand up from the prone position (SPP) in this population is unknown. The pri...

Impaired Regulated Exocytosis and GLUT4 Trafficking in Dysferlin-Deficient Human Myoblasts: A Pilot Study

Background/Objectives: Dysferlinopathies are inherited muscular dystrophies caused by DYSF mutations that lead to progressive muscle degeneration. Proteomic analyses of patient muscle reveal altered abundance of proteins involved in regulated exocytosis and energy metabolism, ref...

The effects of increasing and decreasing dopamine on inhibition of return: a psychopharmacological investigation

Abstract Inhibition of Return (IOR) is the phenomenon of being slower to re-attend to previously attended locations, and is thought to improve the efficiency of attention. Previous studies of dopaminergic disorders indicate that excessive or insufficient dopamine signaling in the...

Short-term macronutrient-specific diets induce distinct metabolic changes detectable in blood and saliva

Background Tools to non-invasively capture dynamic metabolic responses to diet in humans remain limited. Saliva has emerged as an accessible complementary biofluid, but its responsiveness to diet-induced metabolic adaptations remains insufficiently characterized. Methods In this...

A Service-Constrained Two-Stage Stochastic Programming Framework for Hospital Pharmacy Medication Supply Under Demand Uncertainty: Heterogeneous Demand, Conditional GARMA Scenarios, and Longitudinal Validation

Background/Objectives: Hospital pharmacies must maintain medication availability despite heterogeneous and time-varying demand. Statistical fit alone may not yield well-calibrated future scenarios or the best replenishment decision. This study prospectively evaluates a decision-s...

Bioinformatic Identification and Experimental Validation of Novel Antioxidant Peptides Derived from Salmon Collagen

The objective of this study was to identify and experimentally validate novel antioxidant peptides derived from salmon collagen through an integrated bioinformatic and experimental workflow. Collagen sequences from Salmo salar were subjected to in silico enzymatic hydrolysis, and...

Modeling the combined effects of the 2023 Türkiye–Syria earthquake and an Atmospheric River event on landslide hazard

Abstract. The 6 February 2023 Türkiye–Syria earthquake doublet triggered thousands of coseismic landslides. On 14–15 March, an Atmospheric River (AR) delivered up to 183 mm of rainfall across the seismically weakened region, triggering hundreds of additional landslides and debris...

Atmospheric River‐Cyclone Events Disrupting an Antarctic Peninsula Field Campaign: Dynamics, Mesoscale Wind Amplification, and Long‐Term Context

Abstract Extreme weather in the Antarctic Peninsula arises from interactions among large‐scale circulation variability, atmospheric rivers (ARs), extratropical cyclones, and complex coastal terrain, yet the linkages across these scales remain insufficiently resolved. We examine a...

Psycho-Environmental Impacts of Urban Deterioration: Place Dispossession and Precarity in Valparaíso / Impactos psicoambientales del deterioro urbano: desposesión de lugar y precariedad en Valparaíso

This study examines the psycho-environmental impacts of urban deterioration in Valparaíso, Chile, focusing on symbolic dispossession processes and precarious forms of dwelling. We conducted 34 spatially referenced in-depth interviews with residents from the city’s different neigh...

Bioactive Properties and Pharmaceutical Potential of New World Mistletoes of the Genus Tristerix: A Review

Mistletoes of the genus Tristerix, native to South America, represent a unique group of mostly hemiparasitic plants with potential medicinal applications. This review synthesizes existing knowledge on their biological and phytochemical properties, focusing on three main species e...

Structure and Spatio-Temporal Dynamics of Marine Communities Associated with the Kelp Forests at Cape Froward, Strait of Magellan

Giant kelp forests, Macrocystis pyrifera, dominate the coasts of southern Patagonia and are particularly abundant in the coastal ecosystems of Cape Froward, where they play a key role in biodiversity conservation and the provision of multiple ecosystem services, establishing them...