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Uremic pruritus and skin mast cells
N Dimković1, L Djukanović, A Radmilović
1Institute of Renal Diseases, Zvezdara University Clinical Center, Belgrade, Yugoslavia.
Nephron
|January 1, 1992
Summary
End-stage renal failure patients with pruritus show increased skin mast cells and higher histamine levels. Treatments like iron supplementation or antihistamines can alleviate itching in these patients.
Area of Science:
- Dermatology
- Nephrology
- Immunology
Background:
- End-stage renal failure (ESRD) is associated with various complications, including pruritus.
- The role of mast cells and histamine in uremic pruritus is not fully understood.
Purpose of the Study:
- To investigate the correlation between skin mast cell counts and pruritus in ESRD patients.
- To identify potential biomarkers and therapeutic targets for uremic pruritus.
Main Methods:
- Skin biopsies were analyzed for mast cell counts in 25 ESRD patients (divided by pruritus presence) and 6 healthy controls.
- Plasma middle molecular weight substances, serum histamine, PTH, and iron levels were measured.
Main Results:
- Patients with pruritus exhibited more numerous, degranulated mast cells in the skin compared to those without pruritus.
- Higher plasma middle molecular weight substances, serum histamine, and PTH, along with lower serum iron, were observed in pruritic ESRD patients.
- No significant differences in parameters were found across different ESRD treatment modalities (conservative, hemodialysis, peritoneal dialysis).
Conclusions:
- Increased and degranulated skin mast cells, elevated histamine, and altered iron levels are associated with pruritus in ESRD.
- Iron supplementation for hypoferremia or antihistamines, mast cell stabilizers, and high-permeability membranes show therapeutic potential for uremic pruritus.