The surface of an adult rat tongue was investigated by scanning microscopy. Structural organization of the chemo- and mechanoreceptor formations of the tongue was described and their topographic chart was drawn on the basis of the experimental material. An attempt was made to explain the functional significance of these formations.
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J Comp Physiol A Neuroethol Sens Neural Behav Physiol
September 2024
Marine Biological Laboratory, 7 MBL Street, Woods Hole, MA, USA.
Octopuses integrate visual, chemical and tactile sensory information while foraging and feeding in complex marine habitats. The respective roles of these modes are of interest ecologically, neurobiologically, and for development of engineered soft robotic arms. While vision guides their foraging path, benthic octopuses primarily search "blindly" with their arms to find visually hidden prey amidst rocks, crevices and coral heads.
View Article and Find Full Text PDFNat Chem Biol
August 2024
State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha, China.
Synthetic signaling receptors enable programmable cellular responses coupling with customized inputs. However, engineering a designer force-sensing receptor to rewire mechanotransduction remains largely unexplored. Herein, we introduce nongenetically engineered artificial mechanoreceptors (AMRs) capable of reprogramming non-mechanoresponsive receptor tyrosine kinases (RTKs) to sense user-defined force cues, enabling de novo-designed mechanotransduction.
View Article and Find Full Text PDFCrit Care
April 2023
Department of Anesthesia, Critical Care and Emergency, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
Background: There is very limited evidence identifying factors that increase respiratory drive in hypoxemic intubated patients. Most physiological determinants of respiratory drive cannot be directly assessed at the bedside (e.g.
View Article and Find Full Text PDFBratisl Lek Listy
February 2023
Human Merkel cells (MCs) were first described by Friedrich S. Merkel in 1875 and named "Tastzellen" (touch cells). Merkel cells are mainly located in the basal layer of the epidermis and are concentrated in touch-sensitive areas.
View Article and Find Full Text PDFJ Morphol
February 2023
Department of Invertebrate Zoology III, Natural History Museum Vienna, Vienna, Austria.
Many species of lithobiomorph centipedes present a pronounced sexual dimorphism reflected in remarkable structural modifications on the ultimate legs of males. Most records of these male secondary sexual characters addressed taxonomy, helping to identify and characterize species or diagnose genera, but information on their diversity, detailed morphology and possible function(s) is scarce. In this study, nine species of the two lithobiid genera Lithobius Leach, 1814 and Eupolybothrus Verhoeff, 1907 were investigated, using light and scanning electron microscopy to document the detailed morphology of secondary sexual characters of male ultimate legs.
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