Brain Tissue Testing
Brain Tissue Testing - Related Videos
11:20
Making, Testing, and Using Potassium Ion Selective Microelectrodes in Tissue Slices of Adult Brain
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Cited by 19 •
2018
Potassium ions contribute to the resting membrane potential of cells and extracellular K+ concentration is a crucial regulator of cellular excitability. We describe how to make, calibrate and use monopolar K+-selective microelectrodes. Using such electrodes enables the measurement of electrically evoked K+ concentration dynamics in adult hippocampal slices.
02:37
Frozen Mouse Brain Tissue Sectioning: A Procedure to Obtain Thin Frozen Tissue Sections from Frozen Murine Brain Tissue
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2023
In this video, we demonstrate the sectioning of a frozen mouse brain tumor tissue using a cryostat. The frozen brain tissue sections so obtained are stored at low temperatures until further analysis.
04:20
Integration of Brain Tissue Saturation Monitoring in Cardiopulmonary Exercise Testing in Patients with Heart Failure
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Cited by 3 •
2019
This protocol integrated near-infrared spectroscopy into conventional cardiopulmonary exercise testing to identify the involvement of the cerebral hemodynamic response in exercise intolerance in patients with heart failure.
07:07
Biomechanical Characterization of Human Soft Tissues Using Indentation and Tensile Testing
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Cited by 111 •
2016
Tissue biomechanics is important for maintaining cell shape and function and for determining phenotype. This report demonstrates non-destructive mechanical protocols for characterizing elastic and viscoelastic properties of human soft tissues, which can be directly applied to tissue-engineered substrates to allow a close matching of engineered materials to native tissue.
11:31
A Chromatin Assay for Human Brain Tissue
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Cited by 16 •
2008
Until recently, expression studies on human brain were limited to quantification of RNA or protein. With the chromatin immunoprecipitation techniques described in this paper, it will be possible to map histone methylation and other epigenetic regulators of gene expression in postmortem brain.
FAQs
Preservation and sectioning convert a collected brain sample into thin, organized preparations that can be examined consistently. Preservation maintains tissue features, while sectioning exposes comparable regions for staining, antibody labeling, or microscopy. This workflow allows investigators to relate visible cellular and structural patterns to normal function, injury, disease, or responses to an intervention.
Stains and antibodies answer different targeting questions. A stain can highlight general tissue or cellular features, whereas an antibody is selected to bind a specific protein or cellular marker. Comparing these signals helps researchers distinguish patterns such as inflammation, neuronal loss, or abnormal protein accumulation and connect microscopic findings with the biological process under study.
Microscopy and molecular assays provide complementary levels of evidence. Microscopy shows where cellular or structural changes occur within the sample, while molecular assays measure biochemical or genetic signals that may not be apparent from appearance alone. Using both approaches can strengthen interpretation by connecting tissue architecture with molecular changes associated with disease or treatment response.
The most informative analysis depends on the question being asked and the features expected to change. A study focused on cell loss may emphasize stains, antibodies, and microscopy; one examining biochemical or genetic alterations may prioritize molecular assays. Selecting methods in this way aligns the measured signal with the biological outcome under investigation.
A typical workflow begins with preserving the sample, followed by sectioning and application of stains or antibodies when cellular, protein, or structural features are being examined. Microscopy then evaluates the labeled tissue, while molecular assays assess biochemical or genetic signals. The selected sequence depends on the study design and the outcome researchers need to measure.
Researchers apply these analyses to characterize disease-related tissue changes, evaluate biomarkers, and assess whether an experimental intervention affects the nervous system. Findings can include evidence of inflammation, neuronal loss, abnormal protein accumulation, infection, or tumor-related changes. Because each outcome reflects a different tissue or molecular signal, interpretation remains tied to the assay and study design.
In biology, the value of brain tissue testing lies in linking observations across levels of organization. Cellular and structural measurements describe tissue condition, biochemical and genetic assays add molecular context, and together these data support interpretation of normal function, injury, disease, and treatment response. This makes the approach useful in neuroscience and experimental nervous-system research.