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Published on: June 14, 2020
Abstract:
Every genus of microorganism, as well as prions, has been associated with disease of the spinal cord. The spectrum of pathogens resulting in myelopathy varies with the population. Myelopathy is uniquely associated with certain retroviruses, particularly HIV type 1 and human T-cell lymphotropic virus type I, but the myelopathies that occur with these viruses are chiefly limited to "at risk" populations. In the immunocompromised population, a diverse array of pathogens may cause spinal cord disease, especially viruses from the Herpesviridae family, most notably cytomegalovirus and varicella-zoster virus. The prototypical myelopathy resulting from bacterial infection is tabes dorsalis, but this disorder is vanishingly rare in the modern era. In developing countries, Mycobacterium tuberculosis and schistosomiasis remain significant causes of myelopathy.
Insights
Spinal cord diseases (myelopathies) can be caused by various microorganisms, including viruses, bacteria, and parasites. Pathogen types vary by population, with retroviruses and herpesviruses being notable causes in specific groups.
Area of Science:
- Neurology
- Infectious Diseases
- Microbiology
Background:
- Spinal cord diseases, or myelopathies, are linked to a wide range of microorganisms, including bacteria, viruses, fungi, and prions.
- The specific pathogens causing myelopathy differ significantly across various global populations and individual risk factors.
- Certain retroviruses, such as human immunodeficiency virus type 1 (HIV-1) and human T-cell lymphotropic virus type I (HTLV-I), are uniquely associated with myelopathy in specific populations.
Purpose of the Study:
- To review the diverse spectrum of microbial pathogens implicated in spinal cord disease.
- To highlight population-specific variations in the etiology of myelopathy.
- To discuss the role of specific viral, bacterial, and parasitic agents in causing spinal cord pathology.
Main Methods:
- Literature review of studies on infectious agents causing myelopathy.
- Analysis of pathogen prevalence in different demographic and geographic groups.
- Categorization of causative agents based on microorganism type and host factors.
Main Results:
- In immunocompromised individuals, Herpesviridae family viruses, particularly cytomegalovirus and varicella-zoster virus, are significant causes of spinal cord disease.
- While historically significant, bacterial causes like tabes dorsalis are now rare.
- In developing nations, Mycobacterium tuberculosis and schistosomiasis remain prevalent causes of myelopathy.
Conclusions:
- Myelopathy presents a diverse range of infectious etiologies that are heavily influenced by host immune status and geographic location.
- Understanding population-specific pathogen profiles is crucial for accurate diagnosis and management of spinal cord infections.
- Continued surveillance and research are necessary to address the global burden of infectious myelopathies.
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