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425 results for “motility”
FIGURE 2 in A New Species Of Tegoprionus Keifer (Prostigmata: Eriophyidae) From Brazil, Described From All Motile Stages, With An Overview Of The Genus Tegoprionus
FIGURE 2: Tegoprionus mesogibbosus n.sp.: L lateral habitus, female; L1, L2 legs I and II, female; E empodium, enlarged; GM external genitalia, male.
Emigration patterns of motile cryptofauna and their implications for trophic functioning in coral reefs
<p>Patterns of movement of marine species can reflect strategies of reproduction and dispersal, species' interactions, trophodynamics, and susceptibility to change, and thus critically inform how we manage populations and ecosystems. On coral reefs, the density and diversity of metazoan taxa is greatest in dead coral and rubble, which is suggested to fuel food webs from the bottom-up. Yet, biomass and secondary productivity in rubble is predominantly available in some of the smallest individuals, limiting how accessible this energy is to higher trophic levels. We address the bioavailability of motile coral reef cryptofauna based on small-scale patterns of emigration in rubble. We deployed modified RUbble Biodiversity Samplers (RUBS) and emergence traps in a shallow rubble patch at Heron Island, Great Barrier Reef, to detect community-level differences in the directional influx of motile cryptofauna under five habitat accessibility regimes. The mean density (0.13–4.5 ind.cm<sup>-3</sup>) and biomass (0.14–5.2 mg.cm<sup>-3</sup>) of cryptofauna were high and varied depending on microhabitat accessibility. Emergent zooplankton represented a distinct community (dominated by the Appendicularia and Calanoida) with the lowest density and biomass, indicating constraints on nocturnal resource availability. Mean cryptofauna density and biomass were greatest when interstitial access within rubble was blocked, driven by the rapid proliferation of small harpacticoid copepods from the rubble surface, leading to trophic simplification. Individuals with high biomass (e.g., decapods, gobies, and echinoderms) were greatest when interstitial access within rubble was unrestricted. Treatments with a closed rubble surface did not differ from those completely open, suggesting that top-down predation does not diminish rubble-derived resources. Our results show that conspecific cues and species' interactions (e.g., competition and predation) within rubble are most critical in shaping ecological outcomes within the cryptobiome. These findings have implications for prey accessibility through trophic and community size structuring in rubble, which may become increasingly relevant as benthic reef complexity shifts in the Anthropocene.</p>
Optimising the xWORM Assay for Monitoring Hookworm Larvae Motility
<p>Parasitic worms (helminths) infect almost all taxa across the animal kingdom, and pose significant challenges to public health and economies, particularly in developing countries. To address this problem, researchers have developed various tools to measure the motility and viability of helminths. However, the conditions used in anthelmintic screening assays are often not optimised, and they can vary considerably between research teams. These un-optimised conditions can impact new drug screens as little is known about the effect of different conditions on the health of the target parasites. To improve future research this study determined the effect of key assay parameters such as media type, media concentration, in-well parasite density, and assay duration on the infective third-stage larva (L3) of two types of hookworms, <em>Nippostrongylus brasiliensis</em> in rodents and <em>Necator americanus </em>in humans. Conditions were screened over several days using the xWORM assay, a real time impedance-based helminth motility assay using the xCELLigence system with 96-well microplates. While results varied depending on the species and media used, the study found that 500-1000 L3/200µL well volume and a media concentration of 3.13 – 25% generally produced good to excellent assay conditions. This data set provides the outcomes for all conditions tested by this study. This study’s findings can guide future selection of xWORM assay parameters for novel drug trials involving these parasite species and serve as a suggested model for optimising trial conditions for alternate parasite targets and assays.</p>
Effect of Dexmedetomidine of Gastrointestinal Motility
ClinicalTrials.gov study NCT04798482. IPD Sharing: NO. Countries: 1. Publications: 22.
Pilot Study Using a Wireless Motility Capsule
ClinicalTrials.gov study NCT01102894. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Phase IV Study of the Impact of Dietary Fibers on Symptoms and Esophageal Motility in Patients With Non-erosive GERD
ClinicalTrials.gov study NCT01882088. IPD Sharing: YES. Countries: 1. Publications: 6.
Lubiprostone, Colonic Motility and Sensation
ClinicalTrials.gov study NCT00953043. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Magnetically Controlled Capsule Endoscopy Feasibility Study in Gastric Motility
ClinicalTrials.gov study NCT05004012. IPD Sharing: NO. Countries: 1. Publications: 5.
Autonomic Neuropathy, GI Motility, and Inflammation in HIV
ClinicalTrials.gov study NCT02850276. IPD Sharing: YES. Countries: 1. Publications: 5.
Lanreotide in the Treatment of Small Bowel Motility Disorders
ClinicalTrials.gov study NCT03012594. IPD Sharing: NO. Countries: 1. Publications: 17.
Emigration patterns of motile cryptofauna and their implications for trophic functioning in coral reefs
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Ice gliding diatoms establish record-low temperature limits for motility in a eukaryotic cell
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Data from: A data-driven approach to establishing cell motility patterns as predictors of macrophage subtypes and their relation to cell morphology
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Interactions between CNS regulation and serotonergic modulation of crayfish hindgut motility
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Data from: High-speed motility originates from cooperatively pushing and pulling flagella bundles in bilophotrichous bacteria
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Secretin targets interstitial cells of Cajal to regulate intestinal motility
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A test for plasticity in sperm motility activation
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Excitatory neurotransmission activates compartmentalized calcium transients in Müller glia without affecting lateral process motility
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Dataset for: Entrainment of mammalian motile cilia in the brain with hydrodynamic forces
<p>Please read the README.md for information on how to handle the dataset.</p>
Video for: The role of hydrodynamic forces in synchronisation and alignment of mammalian motile cilia
<p>Here you can find all the videos of the PhD thesis: </p> <p>The role of hydrodynamic forces in synchronisation and alignment of mammalian motile cilia.</p> <p>by Nicola Pellicciotta</p> <p>Video1: This example shows a movie of a single cell, being subjected to an external oscillatory flow. Images were acquired at 500\,fps using a 60X objective, then analysed using background subtraction and spatial median filter of 3x3 pixels. Chapter 3</p> <p>Video 2: we show the entrainment of a group of cells with very strong oscillatory external flow $v_\mathrm{EX}= 2$\,mm/s at $f_\mathrm{EX}=12$\,Hz. This s flow induced entrainment and also alignment of beating direction of some cells that were beating misaligned to the external flow. The original direction of beating was recovered after the flow stopped. Chapter 3</p> <p>Video3 and Video4: we depolymerised cell actin by adding 2uM Cytochalasin-D in the cell culture medium for 48hr. After imaging, cells (control and dug treated) were stained in 4\% PFA for 10 minutes, permeabilised with Triton x-100 0.1\% in PBS, and incubated for 1 hour with Nucblue R37605 (1 drop for mL of PBS) and with phalloidin for actin (Sir-Actin, 0.2 uM) following proprietary protocols. Z-stack were taken with confocal microscope (slices of distance of 0.15um each) and can be found at the following links: DMSO treated cells (control) Video 3, and Cytochalasin-D treated, Video 4. Chapter 3</p> <p>Video5: The maximal beating amplitude for a cilium within each cell was measured by inspecting the recordings from top view and marking two extreme points at the power and recovery stroke. Chapter 3</p> <p>Video6: Experimental procedure and the image analysis methods for Chapter 4. Continuous fluid flow is applied for three days on cells cultured in Transwell-chips. The chips are then removed from the flow and cilia motility is imaged with the microscope. From high speed Bright Field movies we identify ciliary beating frequency and cell position, while from tracer particles we measure ciliary beating direction. </p> <p>Video7: Video of Propelled particles in a culture at 29 DIV and treated with shear stress τ ≈0.8 dyne/cm2. Chapter 4</p> <p> </p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.