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Polymorphonuclear leukocyte functions in psoriasis
M Goihman-Yahr1, T Molina, B Sam Martin
1Instituto de Biomedicina, Central University of Venezuela.
Abstract:
Circulating polymorphonuclear leukocyte (CPMN) functions were studied in patients with widespread psoriasis as well as in persons with chronic alcoholic liver disease (CALD), paracoccidioidomycosis, diverse granulomatous diseases, and normal individuals. We were unable to find stimulation or increase in CPMN functions in patients with psoriasis compared to normal individuals. Leukocytes from individuals with CALD had a lowering of their metabolic activation, chemotaxis, random movement, and adherence. CPMNs from patients with paracoccidioidomycosis showed a significant deficiency in their ability to digest Paracoccidioides brasiliensis. Our results are against the concept that functions of circulating PMNs are stimulated in psoriatics.
Insights
Circulating polymorphonuclear leukocyte (CPMN) functions are not stimulated in psoriasis patients. Studies found no increase in CPMN functions compared to healthy individuals, challenging previous concepts.
Area of Science:
- Immunology
- Dermatology
- Cellular Biology
Background:
- Investigating the role of circulating polymorphonuclear leukocytes (CPMNs) in inflammatory conditions.
- Examining CPMN functions in psoriasis, chronic alcoholic liver disease (CALD), paracoccidioidomycosis, and granulomatous diseases.
Observation:
- CPMN functions were assessed in patients with widespread psoriasis and compared to healthy individuals.
- Leukocyte functions, including metabolic activation, chemotaxis, random movement, and adherence, were evaluated in CALD patients.
- The phagocytic capacity of CPMNs against Paracoccidioides brasiliensis was analyzed in patients with paracoccidioidomycosis.
Findings:
- No stimulation or increase in CPMN functions was observed in patients with psoriasis compared to normal individuals.
- Individuals with CALD exhibited reduced metabolic activation, chemotaxis, random movement, and adherence of leukocytes.
- CPMNs from paracoccidioidomycosis patients demonstrated a significant deficit in digesting Paracoccidioides brasiliensis.
Implications:
- The findings contradict the hypothesis that CPMN functions are generally stimulated in psoriatic patients.
- This research provides insights into immune dysregulation in various inflammatory and infectious diseases.
- Understanding CPMN behavior is crucial for developing targeted immunomodulatory therapies.