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The spectrum of skin, mucosa and other extra-articular manifestations
1Department of Medicine, Louisiana State University School of Medicine, New Orleans 70112-2822, USA.
Abstract:
The seronegative spondyloarthropathies appear to be the genetically predisposed host's clinical expression to acute, subacute or chronic reaction to the invasion by environmental microorganisms. In the ensuing days or weeks, depending on the infectious load, clinical manifestations may occur ranging from constitutional complaints such as fever, to a variety of symptoms and/or signs related to the portal of entry-intestinal, genitourinary or respiratory. Within weeks or months, the initial or other target organs, such as the mucocutaneous, ocular and cardiovascular systems, may develop an acute reaction of greater or lesser specificity regarding the triggering agent (oral ulcers, circinate balanitis, erythema nodosum, acute anterior uveitis, pericarditis, heart blocks). Lastly, many years later, a minority of patients, probably those with a large genetic component, exhibit a spectrum of clinical manifestations related to those organs, with a chronic or recurrent course. Acute clinical manifestations--reactive arthritis--are prominent in the initial phase of the clinical spectrum, while chronic manifestations--ankylosing spondylitis--are seen at the other end of the spectrum.
Insights
Seronegative spondyloarthropathies are genetically influenced immune responses to environmental microbes. These conditions can manifest acutely as reactive arthritis or chronically as ankylosing spondylitis, affecting various organ systems.
Area of Science:
- Immunology
- Rheumatology
- Genetics
Background:
- Seronegative spondyloarthropathies represent a spectrum of inflammatory diseases.
- These conditions are thought to arise from a genetically susceptible individual's reaction to environmental triggers, often infectious agents.
Purpose of the Study:
- To elucidate the clinical spectrum and progression of seronegative spondyloarthropathies.
- To understand the relationship between genetic predisposition, environmental factors, and disease manifestations.
Main Methods:
- Observational analysis of clinical presentations and disease courses.
- Correlation of clinical manifestations with potential infectious triggers and genetic factors.
Main Results:
- Disease onset can range from acute (reactive arthritis) to chronic (ankylosing spondylitis).
- Initial symptoms may include constitutional complaints and signs related to entry portals (intestinal, genitourinary, respiratory).
- Target organ involvement (mucocutaneous, ocular, cardiovascular) can occur weeks to months later, with chronic or recurrent manifestations appearing years later in a subset of patients.
Conclusions:
- Seronegative spondyloarthropathies exhibit a diverse clinical trajectory influenced by host genetics and environmental exposures.
- The disease spectrum spans from acute reactive arthritis to chronic ankylosing spondylitis, involving multiple organ systems over time.
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