Slice Integrity
Slice Integrity - Related Videos
02:58
Evaluating Cytotoxicity and Membrane Integrity in Lung Slices via Lactate Dehydrogenase Assay
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2025
This video demonstrates the lactate dehydrogenase, LDH assay to measure the cytotoxic effect of a test substance and its effect on the membrane integrity in human precision-cut lung slices. The assay provides a quantitative measure of cell death or damage in the sample.
05:02
Cerebellum Dissection and Slice Preparation: A Method to Generate Tissue Slices from Mouse Cerebellum
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2025
This video describes a method to generate tissue slices from the mouse cerebellum. The cerebellar slices can be used for organotypic culturing that provides insights into neurodevelopmental mechanisms, including myelination dynamics.
09:45
Preparation of Parasagittal Slices for the Investigation of Dorsal-ventral Organization of the Rodent Medial Entorhinal Cortex
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Cited by 36 •
2012
We describe procedures for preparation and electrophysiological recording from brain slices that maintain the dorsal-ventral axis of the medial entorhinal cortex (MEC). Because neural encoding of location follows a dorsal-ventral organization within the MEC, these procedures facilitate investigation of cellular mechanisms important for navigation and memory.
11:13
Ex Vivo Optogenetic Dissection of Fear Circuits in Brain Slices
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Cited by 8 •
2016
Optogenetic approaches are widely used to manipulate neural activity and assess the consequences for brain function. Here, a technique is outlined that upon in vivo expression of the optical activator Channelrhodopsin, allows for ex vivo analysis of synaptic properties of specific long range and local neural connections in fear-related circuits.
08:20
Organotypic Hippocampal Slice Cultures
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Cited by 52 •
2011
We describe a method to prepare organotypic hippocampal slices that can be easily adapted to other brain regions. Brain slices are laid on porous membranes and culture media is allowed to form an interface. This method preserves the gross architecture of the hippocampus for up to 2 weeks in culture.
FAQs
Slice thickness must be selected to support both tissue architecture and access to oxygen and nutrients. A poorly chosen thickness can increase the challenge of maintaining cellular viability and functional properties throughout the tissue. Standardizing this variable across samples helps reduce experimental variability and makes comparisons between organotypic cultures, histological preparations, and ex vivo tests more reliable.
Once tissue is removed from an organ, adequate access to oxygen and nutrients becomes essential for preserving cellular viability and function. Limited access can contribute to cell death and weaken the tissue’s ability to reproduce native responses. Controlling these conditions is therefore important when slices are used to study disease mechanisms, drug effects, or electrophysiological behavior.
Sectioning can disrupt tissue architecture, while rough or excessive handling can add mechanical damage after cutting. Gentle handling helps preserve the organization needed for histological analysis and the cellular relationships that support functional studies. Controlling both stages improves the likelihood that observed responses reflect the tissue or treatment rather than damage introduced during preparation.
A reliable workflow begins with controlled sectioning, followed by selection of a suitable slice thickness and gentle handling throughout preparation. The resulting slices must then receive adequate access to oxygen and nutrients. Together, these measures limit mechanical damage, cell death, and architectural disruption, creating specimens more suitable for culture, analysis, and ex vivo experimentation.
Preserved slices support several medical research applications, including organotypic culture, histological analysis, electrophysiological studies, and ex vivo drug testing. Their value comes from retaining enough native tissue organization and function to support meaningful measurements. This makes them useful for examining disease mechanisms and assessing therapeutic effects without relying only on isolated cells or less organized preparations.
High-quality slices can better model responses occurring in native tissue, which strengthens interpretation of disease mechanisms and therapeutic effects. In contrast, mechanical damage, cell death, or lost architecture may introduce variability unrelated to the research question. Maintaining integrity therefore improves experimental consistency and helps investigators distinguish treatment-related changes from artifacts caused by tissue preparation.