Clinical Characteristics and Etiologic Analysis of Scabies-Associated Glomerulonephritis

Abstract

Objective: To understand the incidence and clinical characteristics of scabies-associated glomerulonephritis and to investigate its pathogenesis. Methods: The patients with scabies from Qijiang District People's Hospital were collected from the outpatient department and divided into the simple scabies group (A) and glomerulonephritis group (B) according to whether complicating glomerulonephritis. The general clinical indicators and serum C-reactive protein (CRP), complement components C3 and C4, immunoglobulin, TNF- alpha , IL-6, IL-1 beta and IL-18 in the early stage of the disease were determined and compared between the two groups. The differences of above indicators were collected and compared between before and after clinical cure in the patients with scabies-associated glomerulonephritis. Results: Among 376 cases of scabies, 16 cases developed glomerulonephritis. The clinical manifestations included glomerular hematuria and/or mild-moderate proteinuria. The kidney injury manifestations in 12 cases were completely disappeared at 2-6 months after scabies cure. The levels of serum CRP, IgG, TNF- alpha , IL-6, and IL-18 in the group B were significantly increased and the serum C3 level was significantly decreased compared with the group A, the differences were statistically significant (P<0.05). The levels of serum IgG, hs-CRP, TNF- alpha , IL-6 and IL-18 after cure in 12 cases of clinically cured scabies-associated glomerulonephritis were significantly decreased and the serum C3 level was significantly increased, and the difference was statistically significant compared with the early onset stage (P<0.05). Conclusion: The majority of prognosis in scabies-associated glomerulonephritis is good. Its occurrence is closely correlated with immune and inflammatory reactions induced by sarcoptes mites infection.