Brain Structure Acting as Protective Barrier for Infection

What protects the brain from infection? A newly discovered structure in the brain produces immune cells that scan passing brain fluid for signs of infection.

From the complexity of neural networks to basic biological functions and structures, the human brain only reluctantly reveals its secrets.

Advances in neuro-imaging and molecular biology have only recently enabled scientists to study the living brain at a level of detail not previously achievable, unlocking many of its mysteries.

Brain Exercises to Improve Memory
An active brain can certainly help in improving memory by strengthening the connections between neural impulses in brain.

‘Abnormalities in newly brain membrane called SLYM might trigger or worsen diseases such as multiple sclerosis, central nervous system infections, and Alzheimer’s.’

The latest discovery described in the journal Science is a previously unknown component of brain anatomy that acts as both a protective barrier and platform from which immune cells monitor the brain for infection and inflammation.

The discovery comes from the labs of Translational Neuromedicine at the University of Rochester and the University of Copenhagen. This has transformed our understanding of the fundamental mechanics of the human brain and made significant findings in the field of neuroscience.

Scientists Discover Whole New Layer of Brain Tissue that May Help Ward Off Infections

The discovery of a new anatomic structure that segregates and helps control the flow of cerebrospinal fluid (CSF) in and around the brain now not only transports but also removes waste from the brain, and supports its immune defenses.

The study focuses on the membranes that encase the brain, which create a barrier from the rest of the body and keeps it bathed in CSF.

How Can We Keep the Brain Young?
Mental decline is common, and it is one of the most feared consequences of aging. This does not imply that cognitive impairment is inevitable. Ways to keep the brain agile and young is core essential and needs to be the way of life.

The traditional understanding of what is collectively called the meningeal layer, is a barrier comprised of individual layers known as the dura, arachnoid, and pia mater.

The new layer discovered further divides the space below the arachnoid layer, the subarachnoid space, into two compartments, separated by the newly described layer, which the researchers name the SLYM, an abbreviation of Subarachnoidal Lymphatic-like Membrane.

Childhood Obesity Linked With Poor Brain Health
Childhood obesity reduced brain connectivity in the functional networks involved in cognitive control, motivation, and decision-making based on rewards.

The SLYM is a type of membrane called mesothelium, which is known to line other organs in the body, including the lungs and heart. Mesothelia typically surround and protect organs and harbor immune cells.

The new membrane is very thin and delicate and consists of only one or a few cells in thickness. Yet the SLYM is a tight barrier, and allows only very small molecules to transit; it seems to separate ‘clean’ and ‘dirty’ CSF.

Protein in the Brain Could be New Drug Target for Schizophrenia
New study reveals that a protein present in the brain could be used to treat schizophrenia

This last observation hints at the likely role played by SLYM in the glymphatic system, which requires a controlled flow and exchange of CSF, allowing the influx of fresh CSF while flushing the toxic proteins associated with Alzheimer’s and other neurological diseases from the central nervous system.

The Discovery of the SLYM opens the door for further study of its role in brain disease. When the membrane was ruptured during traumatic brain injury, the resulting disruption in the flow of CSF impaired the glymphatic system and allowed non-central nervous system immune cells to enter the brain.

They also suggest that the delivery of drugs and gene therapeutics to the brain may be impacted by SLYM function, which will need to be considered as new generations of biological therapies are being developed.

Source-Eurekalert