Zebrafish (Brachydanio rerio) larvae (8 days) were tested singly in a swimway made up of six compartments. The larva emerged into each compartment in turn, and its response to visual features (e.g. turning away) was affected by memory of previous layouts, as well as by home tank experience. The use of stimuli placed far to the right or left proved to engage preferentially the eye system directly fed by right or left eye system (RES, LES). At least three behavioural mechanisms appeared to show similar laterality in larva and adult. Both turned right in startle-induced locomotion. In both, LES was preferentially involved in assessment of novelty. Thus, in larvae, use of LES caused more investigation of a familiar stimulus in a strange context. Finally, in larvae there was some evidence that (as is the case in adults) RES was responsible for the visual control of response. Here the evidence for the adult was the preferential use of the right eye to view the object of response, whereas for the larva, it was the enhanced ability to sustain a motor strategy when RES was in use.
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http://dx.doi.org/10.1016/j.bbr.2003.08.012 | DOI Listing |
Int J Biol Macromol
January 2025
Department of Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China; Department of Emergency, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China. Electronic address:
Diabetic wounds often exhibit a chronic non-healing state due to the combined effects of multiple factors, including hyperglycemia, impaired angiogenesis, immune dysfunction, bacterial infection, and excessive oxidative stress. Despite the availability of various therapeutic strategies, effectively managing the complex and prolonged healing process of diabetic infected wounds remains challenging. In this study, we combined the natural antidiabetic drug lipoic acid (LA) with the RADA16-YIGSR (RY) peptide obtained through solid-phase synthesis, utilizing reversible hydrogen bonds and coordination bonds for binding.
View Article and Find Full Text PDFActa Biomater
January 2025
Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA. Electronic address:
Hydrogels composed of collagen, the most abundant protein in the human body, are widely used as scaffolds for tissue engineering due to their ability to support cellular activity. However, collagen hydrogels with encapsulated cells often experience bulk contraction due to cell-generated forces, and conventional strategies to mitigate this undesired deformation often compromise either the fibrillar microstructure or cytocompatibility of the collagen. To support the spreading of encapsulated cells while preserving the structural integrity of the gels, we present an interpenetrating network (IPN) of two distinct collagen networks with different crosslinking mechanisms and microstructures.
View Article and Find Full Text PDFAm J Hum Genet
January 2025
Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany; Institute of Human Genetics, University of Regensburg, 93053 Regensburg, Germany; Institute of Clinical Human Genetics, University Hospital Regensburg, 93053 Regensburg, Germany. Electronic address:
BCL11B is a Cys2-His2 zinc-finger (C2H2-ZnF) domain-containing, DNA-binding, transcription factor with established roles in the development of various organs and tissues, primarily the immune and nervous systems. BCL11B germline variants have been associated with a variety of developmental syndromes. However, genotype-phenotype correlations along with pathophysiologic mechanisms of selected variants mostly remain elusive.
View Article and Find Full Text PDFSensors (Basel)
December 2024
Ophthalmic Instrumentation Development Lab, The Wilmer Eye Institute, The Johns Hopkins University School of Medicine, Wilmer 233, 600 N. Wolfe St., Baltimore, MD 21287, USA.
Signal amplitudes obtained from retinal scanning depend on numerous factors. Working with polarized light to interrogate the retina, large parts of which are birefringent, is even more prone to artifacts. This article demonstrates the necessity of using normalization when working with retinal birefringence scanning signals in polarization-sensitive ophthalmic instruments.
View Article and Find Full Text PDFSensors (Basel)
December 2024
Department of Electronics and Communication Engineering, Istanbul Technical University, 34467 Istanbul, Istanbul, Turkey.
Classifying Motor Imaging (MI) Electroencephalogram (EEG) signals is of vital importance for Brain-Computer Interface (BCI) systems, but challenges remain. A key challenge is to reduce the number of channels to improve flexibility, portability, and computational efficiency, especially in multi-class scenarios where more channels are needed for accurate classification. This study demonstrates that combining Electrooculogram (EOG) channels with a reduced set of EEG channels is more effective than relying on a large number of EEG channels alone.
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