Meningeal cells are specialized cells that constitute the meninges—the protective membranes enveloping the brain and spinal cord. The meninges consist of three distinct layers: the dura mater (pachymeninx), arachnoid mater, and pia mater, collectively referred to as the meninges. These membranes provide critical mechanical protection, facilitate cerebrospinal fluid (CSF) circulation, and participate in immune surveillance of the central nervous system[@das2019].
Overview
The meninges represent a crucial interface between the peripheral immune system and the CNS. Meningeal cells, particularly those of the arachnoid and pia mater (collectively termed the leptomeninges), have emerged as important regulators of neuroinflammation, CSF dynamics, and CNS homeostasis. Research over the past two decades has revealed that meningeal cells play active roles in various neurodegenerative processes[@decimo2012].
Anatomy of the Meninges
Dura Mater
The dura mater is the outermost and toughest meningeal layer, composed primarily of:
Meningeal cells are specialized cells that constitute the meninges—the protective membranes enveloping the brain and spinal cord. The meninges consist of three distinct layers: the dura mater (pachymeninx), arachnoid mater, and pia mater, collectively referred to as the meninges. These membranes provide critical mechanical protection, facilitate cerebrospinal fluid (CSF) circulation, and participate in immune surveillance of the central nervous system[@das2019].
Overview
The meninges represent a crucial interface between the peripheral immune system and the CNS. Meningeal cells, particularly those of the arachnoid and pia mater (collectively termed the leptomeninges), have emerged as important regulators of neuroinflammation, CSF dynamics, and CNS homeostasis. Research over the past two decades has revealed that meningeal cells play active roles in various neurodegenerative processes[@decimo2012].
Anatomy of the Meninges
Dura Mater
The dura mater is the outermost and toughest meningeal layer, composed primarily of:
Dural fibroblasts: Principal cellular component
Dural border cells: Interface with arachnoid
Meningeal macrophages: Resident immune cells
Meningeal veins: Venous sinuses
The dura mater contains numerous sensory nerve endings and is richly vascularized with both arterial supply and venous drainage[@natale2021].
Arachnoid Mater
The arachnoid mater is a avascular membrane composed of:
Arachnoid cap cells: Specialized epithelial-like cells
[PubMed - Meningeal Cells](https://pubmed.ncbi.nlm.nih.gov/?term=meningeal+cells+neurodegeneration) - Biomedical literature
[Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data
[Multiple Sclerosis Research](https://multiplesclerosisresearch.org/) - MS research updates
Background
The study of Meningeal Cells has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.