Endoneurium Sheath
Endoneurium Sheath - Related Videos
06:09
Optic Nerve Sheath Point of Care Ultrasound: Image Acquisition
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Cited by 1 •
2023
Point-of-care ultrasound (POCUS) of the optic nerve sheath diameter (ONSD) has been shown to be useful in identifying patients with increased intracranial pressure (ICP). However, the non-standardized technique for this POCUS has hampered its use. We present a standardized image acquisition protocol for use in the acute care setting.
06:12
Detached Maize Sheaths for Live-Cell Imaging of Infection by Fungal Foliar Maize Pathogens
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Cited by 1 •
2023
This manuscript details an optimized inoculation protocol that uses detached maize leaf sheaths for reproducible cytological, physiological, and molecular studies of maize interactions with fungal plant pathogens. The leaf sheaths facilitate real-time observation of cellular interactions between the living plant and fungus in unfixed tissues.
08:57
Identifying, Diagnosing, and Grading Malignant Peripheral Nerve Sheath Tumors in Genetically Engineered Mouse Models
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2024
We have developed a methodology for assessing whether nervous system neoplasms in genetically engineered mice accurately recapitulate the pathology of their human counterparts. Here, we apply these histologic techniques, defined pathologic criteria, and culture methodologies to neurofibromas and malignant peripheral nerve sheath tumors arising in the P0-GGFβ3 mouse model.
09:17
Optimizing Extracellular Vesicle Delivery Using a Core-Sheath 3D-Bioprinted Scaffold for Chronic Wound Management
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Cited by 2 •
2025
This study presents a protocol for fabricating core-sheath 3D-bio-printed scaffolds for chronic wound healing. Extracellular vesicles are isolated from mesenchymal stem cells, and loaded into the core (alginate) with the sheath made from carboxymethyl cellulose and alginate lyase. This design allows controlled scaffold degradation and efficient EVs release.
09:37
Defining Gene Functions in Tumorigenesis by Ex vivo Ablation of Floxed Alleles in Malignant Peripheral Nerve Sheath Tumor Cells
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2021
Here, we present a protocol for performing gene knockouts that are embryonic lethal in vivo in genetically engineered mouse model-derived tumors and then assessing the effect that the knockout has on tumor growth, proliferation, survival, migration, invasion, and the transcriptome in vitro and in vivo.
FAQs
The collagen-rich extracellular matrix helps maintain the local environment around each nerve fiber while providing limited mechanical protection. Its fine capillary network supports exchange of nutrients and waste, allowing the axon-Schwann cell unit to remain within an organized tissue space. These combined structural and exchange functions contribute to the functional integrity of peripheral nerves.
The three connective-tissue layers operate at different organizational levels. The endoneurium supports individual nerve fibers, whereas the perineurium and epineurium contribute to progressively larger structural groupings within the peripheral nerve. Examining these layers together helps researchers interpret how local fiber support relates to the overall organization and mechanical integrity of a nerve.
Disruption can alter the organized microenvironment surrounding individual nerve fibers and interfere with the structural support normally provided by the sheath. Because the endoneurium is associated with nutrient and waste exchange, its damage is relevant when interpreting nerve pathology. This makes endoneurial changes important for studying injury responses, disease-related alterations, and peripheral nerve repair.
The endoneurium provides a fiber-level structural context for evaluating axonal regeneration after peripheral nerve damage. Researchers can consider whether its organization and local support are preserved, disrupted, or changing during repair. Linking these observations with nerve histology helps clarify how the tissue environment relates to regenerative processes without treating axonal growth as an isolated event.
Histological interpretation should consider the sheath’s delicate organization around individual nerve fibers, its collagen-rich extracellular matrix, and its association with a fine capillary network. Researchers should also evaluate how these features fit within the surrounding perineurial and epineurial layers. This layered assessment helps distinguish local fiber support from the larger architecture of the peripheral nerve.
Endoneurial analysis provides a way to examine whether the fiber-level environment remains organized during peripheral nerve repair. Researchers can relate sheath structure to changes associated with injury, axonal regeneration, and disease. Because the endoneurium contributes to local support and exchange, its condition can add tissue-level context when interpreting repair-related outcomes.