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Related Concept Videos

Degenerative Disc Disease ll: Pathophysiology01:23

Degenerative Disc Disease ll: Pathophysiology

The symptoms of degenerative disc disease arise from a combination of mechanical compression, vascular compromise, and biochemical inflammation, which together disrupt nerve function and produce pain.Mechanical CompressionDisc degeneration reduces height and elasticity, predisposing to herniation of the nucleus pulposus, a major cause of radicular pain. Herniations may be protrusion (bulging with intact annulus), extrusion (nucleus extends beyond disc but remains connected), or sequestration...
Degenerative Disc Disease I: Introduction01:27

Degenerative Disc Disease I: Introduction

Degenerative disc disease is a chronic condition in which intervertebral discs gradually lose structure and function. It is not infectious or autoimmune; rather, it results from age-related biochemical and mechanical changes, influenced by genetic, metabolic, and environmental factors.Structure and Function of DiscsThe spine contains 23 intervertebral discs that absorb load, distribute forces, maintain spacing, and allow flexibility. Each disc consists of a nucleus pulposus, a gel-like core...
Herniated Intervertebral Disc l: Introduction01:29

Herniated Intervertebral Disc l: Introduction

Intervertebral disc herniation refers to the displacement of the nucleus pulposus (the gel-like inner core of the disc) through a tear or weakened area in the annulus fibrosus (the outer fibrous ring). The displaced disc material extends beyond the normal boundaries of the disc space and may compress or irritate nearby spinal nerve roots or, less commonly, the spinal cord.Etiology and Risk FactorsHerniation commonly results from degeneration, in which aging reduces disc hydration and...
Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
Inflammatory Bowel Disease III: Crohn's Disease01:25

Inflammatory Bowel Disease III: Crohn's Disease

Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...
Structural Joints: Cartilaginous Joints01:17

Structural Joints: Cartilaginous Joints

As the name indicates, at a cartilaginous joint, the adjacent bones are united by cartilage, a tough but flexible type of connective tissue. Unlike synovial joints, these types of joints lack a joint cavity and involve bones joined together by either hyaline cartilage or fibrocartilage.
There are two types of cartilaginous joints:
Synchondrosis
A synchondrosis ("joined by cartilage") is a cartilaginous joint where bones are connected by hyaline cartilage. Synchondrosis may be temporary or...

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Related Experiment Video

Updated: Jul 4, 2026

Optical Sectioning and Visualization of the Intervertebral Disc from Embryonic Development to Degeneration
06:22

Optical Sectioning and Visualization of the Intervertebral Disc from Embryonic Development to Degeneration

Published on: July 8, 2021

[Intervertebral disc pathologies from an immunological perspective].

H Tapia-Pérez1

  • 1Klinik für Neurochirurgie, Universität Otto von Guericke, Leipziger Strasse 44, 39120 Magdeburg, Germany. lehwand@hotmail.com

Revista De Neurologia
|June 11, 2008
PubMed
Summary
This summary is machine-generated.

Macrophages are consistently found in degenerated intervertebral discs, suggesting their role in disc disease. Further research is needed to understand their specific interactions and impact on pain.

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A Proinflammatory, Degenerative Organ Culture Model to Simulate Early-Stage Intervertebral Disc Disease.
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A Proinflammatory, Degenerative Organ Culture Model to Simulate Early-Stage Intervertebral Disc Disease.

Published on: February 14, 2021

An In Vitro Organ Culture Model of the Murine Intervertebral Disc
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An In Vitro Organ Culture Model of the Murine Intervertebral Disc

Published on: April 11, 2017

Related Experiment Videos

Last Updated: Jul 4, 2026

Optical Sectioning and Visualization of the Intervertebral Disc from Embryonic Development to Degeneration
06:22

Optical Sectioning and Visualization of the Intervertebral Disc from Embryonic Development to Degeneration

Published on: July 8, 2021

A Proinflammatory, Degenerative Organ Culture Model to Simulate Early-Stage Intervertebral Disc Disease.
05:46

A Proinflammatory, Degenerative Organ Culture Model to Simulate Early-Stage Intervertebral Disc Disease.

Published on: February 14, 2021

An In Vitro Organ Culture Model of the Murine Intervertebral Disc
08:03

An In Vitro Organ Culture Model of the Murine Intervertebral Disc

Published on: April 11, 2017

Area of Science:

  • Biomedical Science
  • Immunology
  • Orthopedics

Context:

  • Intervertebral disc degeneration is a common cause of debilitating back pain.
  • The exact mechanisms driving disc degeneration and associated pain remain unclear.
  • Inflammatory processes and immune cell involvement are increasingly implicated.

Purpose:

  • To investigate the role of immune cells, particularly macrophages, in intervertebral disc degeneration.
  • To explore the contribution of inflammatory mediators like cytokines to disc pathology.
  • To clarify the inconsistencies in current research regarding immune cell presence and function.

Summary:

  • Studies indicate abnormal cytokine levels (TNF-alpha, IL-1 beta, IL-6) in disc disease.
  • Macrophages are consistently identified in degenerated intervertebral discs, despite contradictory findings on other immune cells.
  • The heterogeneity of the immune response during injury-repair cycles may explain variability in study results.

Impact:

  • Understanding macrophage interactions within the disc microenvironment is crucial.
  • Clarifying these cellular and molecular networks can explain the discrepancy between clinical and radiological findings.
  • This knowledge may lead to improved management strategies for intervertebral disc disease.