Neurochemical Markers
Neurochemical Markers - Related Videos
08:54
Immunostaining of Biocytin-filled and Processed Sections for Neurochemical Markers
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Cited by 28 •
2016
This protocol presents a method for the morphological recovery of neurons patched during electrophysiological recordings using biocytin filling and subsequent immunohistochemical postprocessing. We show that thick biocytin-filled sections that were stained and coverslipped can be restained with a second primary antibody days or months later.
01:26
Neurochemical Transmission: Sites of Drug Action
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2023
Neurochemical transmission, the conduction of electrical impulses between neurons mediated by neurotransmitters, plays a vital role in various physiological processes. Autonomic drugs exert their effects by modulating neurotransmission within the autonomic nervous system. For instance, drugs such as hemicholinium block the precursor uptake necessary for synthesizing acetylcholine, an essential autonomic neurotransmitter. Following synthesis, neurotransmitters are stored in vesicles. Metyrosine...
07:04
Physiological, Morphological and Neurochemical Characterization of Neurons Modulated by Movement
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2011
A technique is described to quantify the in vivo physiological response of mammalian neurons during movement and correlate the physiology of the neuron with neuronal morphology, neurochemical phenotype and synaptic microcircuitry.
14:37
Whole-cell Patch-clamp Recordings from Morphologically- and Neurochemically-identified Hippocampal Interneurons
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Cited by 39 •
2014
Cortical networks are controlled by a small, but diverse set of inhibitory interneurons. Functional investigation of interneurons therefore requires targeted recording and rigorous identification. Described here is a combined approach involving whole-cell recordings from single or synaptically-coupled pairs of neurons with intracellular labeling, post-hoc morphological and immunocytochemical analysis.
07:34
Gold Nanoparticle Modified Carbon Fiber Microelectrodes for Enhanced Neurochemical Detection
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Cited by 20 •
2019
In this study, we modify carbon-fiber microelectrodes with gold nanoparticles to enhance the sensitivity of neurotransmitter detection.
FAQs
Researchers interpret a marker by comparing its amount, location, or activity between defined conditions rather than treating one measurement as a complete explanation. Such comparisons can reveal whether a chemical pathway changes with neuronal signaling, development, disease, or treatment. Receptor activity and enzyme measurements add functional context, helping distinguish altered signaling from a simple change in molecule abundance.
A neurotransmitter measurement captures one molecular signal, whereas metabolites, neuropeptides, receptors, and enzymes add related molecular dimensions. Examining these categories together can show whether an observed change is limited to signaling molecules or extends to receptor activity and pathway-associated chemistry. This broader profile supports more precise links between chemical pathways and nervous-system function.
Receptor activity matters because the amount of a signaling molecule does not by itself show how strongly a pathway is responding. Measuring receptor activity alongside molecular abundance can indicate whether altered neuronal communication is accompanied by a change in receptor-mediated signaling. This distinction is useful when connecting chemical measurements to synaptic communication, disease-related changes, or treatment effects.
Researchers select the sample and measurement approach according to the scientific question and the marker being studied. Brain tissue, cerebrospinal fluid, blood, and other samples can be examined with biochemical, imaging, or molecular methods. Comparing measurements across these sources or methods can reveal distribution, abundance, or receptor activity when the chosen approach captures the relevant molecular feature.
Within neuroscience, these measurements help connect chemical pathways with disorders and interventions. Researchers can examine patterns associated with depression, addiction, or neurodegeneration, then use the results to investigate therapeutic targets. Comparing marker levels, distribution, or receptor activity across relevant conditions may also identify biological changes that are useful for diagnosis or for monitoring how the nervous system responds to treatment.
Comparing marker levels, distribution, or receptor activity across treatment-related conditions can reveal biological changes associated with therapeutic response. The resulting evidence may help evaluate a therapeutic target or determine whether nervous-system chemistry changes alongside treatment. Combining several molecular measurements can provide a more informative picture of treatment-related effects than relying on a single marker category alone.