Video Experimental Relacionado
Updated: Jun 6, 2026

11:22
Three-dimensional Imaging of Nociceptive Intraepidermal Nerve Fibers in Human Skin Biopsies
Published on: April 29, 2013
13.3K
Identificación multiómica de la hiperplasia perineural y de los macrófagos nerviosos asociados a los lípidos en las
Michael Heming1, Anna-Lena Börsch1, Jolien Wolbert1
1Department of Neurology, University Hospital Münster, Münster, Germany.
Nature communications
|August 23, 2025
Resumen
Las polineuropatías (PNP) son enfermedades nerviosas complejas con causas poco claras. Este estudio revela que los PNP afectan a todo el nervio, identificando nuevos marcadores y mecanismos de diagnóstico, particularmente en casos autoinmunes.
Área de la Ciencia:
- La neurociencia
- La genómica
- Patología
Sus antecedentes:
- Las polineuropatías (PNP) son enfermedades comunes y mecánicamente diversas que afectan a los nervios periféricos.
- La identificación de las causas específicas de los PNP es a menudo un desafío debido a su complejidad.
Objetivo del estudio:
- Investigar los mecanismos celulares y moleculares que subyacen a las polineuropatías humanas.
- Identificar nuevos marcadores de diagnóstico y objetivos terapéuticos para las PNP.
Principales métodos:
- Transcriptómica integrada de un solo núcleo y transcriptómica espacial subcelular en biopsias de nervios periféricos humanos de 33 pacientes con PNP y 4 controles.
- Se analizaron 365.708 núcleos para identificar marcadores de tipo celular y cambios en la transcripción.
Principales resultados:
- Descubrió una heterogeneidad inesperada dentro de las células perineurales.
- Se observó un patrón compartido en los PNP: pérdida de células de Schwann mielinizantes, aumento de la reparación de las células de Schwann y más macrófagos endoneuriales lipidophagotizantes.
- Se identificaron cambios transcripcionales generalizados en múltiples tipos de células, lo que sugiere que las PNP son "enfermedades pan-nerviosas".
- Se encontró hiperplasia perineurial focal y aumento de la expresión de CXCL14 en PNP mediados por autoinmunidad, identificando CXCL14 como un marcador celular perineurial.
Conclusiones:
- El análisis multi-ómico de las biopsias nerviosas proporciona nuevos conocimientos sobre la patogénesis de la PNP.
- Se han identificado posibles marcadores y mecanismos de diagnóstico para las polineuropatías, especialmente los subtipos autoinmunes.
Videos de Conceptos Relacionados
Neural Regulation
Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
Glial Cells
Overview
Nervous Tissue: Neuron Types
Neurons, the fundamental units of the nervous system, can be classified based on both their structural and functional characteristics.
Structurally, neurons are categorized into three main types: multipolar, bipolar, and unipolar (or pseudounipolar). Multipolar neurons, which are the most common type in the brain and spinal cord, as well as all motor neurons, possess multiple dendrites and a single axon.
Bipolar neurons, on the other hand, have one primary dendrite and one axon. They are...
Structurally, neurons are categorized into three main types: multipolar, bipolar, and unipolar (or pseudounipolar). Multipolar neurons, which are the most common type in the brain and spinal cord, as well as all motor neurons, possess multiple dendrites and a single axon.
Bipolar neurons, on the other hand, have one primary dendrite and one axon. They are...
Peripheral Nervous System: Ganglia and Nerves
The Peripheral Nervous System (PNS) is a crucial component of the body's neural network, extending beyond the central nervous system (CNS) to bridge the gap between the CNS and the external environment. It encompasses nerves, ganglia, and sensory receptors.
Nerves
The nerve is a bundle of axons that serves as the communication highway in the PNS. Each nerve is ensheathed in a protective layer of connective tissue called the epineurium. This outermost layer safeguards the nerve and supports the...
Nerves
The nerve is a bundle of axons that serves as the communication highway in the PNS. Each nerve is ensheathed in a protective layer of connective tissue called the epineurium. This outermost layer safeguards the nerve and supports the...
Nervous Tissue: Glial Cells
Glia, or neuroglia, are vital support cells that assist neurons in their functions. The term "glia" originates from the Greek word for "glue," reflecting their role in holding the nervous system together. These cells can be categorized into six types: four in the central nervous system (CNS) and two in the peripheral nervous system (PNS).
The CNS glial cell includes the astrocytes, the oligodendrocytes, the microglia, and the ependymal cells.
Astrocytes are star-shaped glial cells that interact...
The CNS glial cell includes the astrocytes, the oligodendrocytes, the microglia, and the ependymal cells.
Astrocytes are star-shaped glial cells that interact...

