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Correlation of systemic lupus erythematosus disease activity with classical complement (CH50) function and related protein levels
Bamdad Mehrbany K, Akbarian M, Salesi M, Geflati Z, Tavassoli S,
Volume 66, Issue 6 (9-2008)
Abstract

Background: The components of the classical complement pathway play an important role in the pathogenesis of systemic lupus erythematosus (SLE) and are reportedly useful biomarkers of disease activity. In this study, we evaluate disease activity, complement function (total hemolytic complement, CH50) and complement protein levels (C3, C4, C3d, C4d, SC5b-9), comparing the results of patients with active disease versus those with inactive disease.
Methods: This cross-sectional study included 78 hospitalized women with SLE, 24 of whom were in the active group, with SLE disease activity indexes (SLEDAI.2K) of >6, and 54 in the inactive group, with SLEDAI.2K of ≤6. Serum CH50 was measured using a red blood cell hemolytic assay. C3 and C4 levels were determined by nephlometry and plasma levels of C3d, C4d, SC5b-9 by ELISA. The data were statistically analyzed using SPSS.
Results: The mean (±standard error) C4d levels of the inactive group were significantly higher than those of the active group (23.39±1.1µg/ml and 16.9±1.6µg/ml, respectively p=0.003). There was also a significant correlation between C3 and C4 levels (p=0.807). The mean values of the other proteins (C3, C4, CH50, SC5b-9, and C3d circulating immune complex concentrations) were not significantly different between the inactive group vs. the active group: 89.35±6.8 vs. 85.54±7.6mg/dl, 18.33±2.3 vs. 20.45±2.4mg/dl, 149.03±4.3 vs. 157±4.3U, 1414.4±114.94 vs. 1471.1±216.9ng/ml, 9.43±0.96 vs. 13.31±3.16µgEq/ml, respectively (p>0.05).
Conclusions: According to our results, C4d levels may be used as a biomarker of disease activity. The significant correlation between C3 and C4 may confirm the activity of the classical pathway in SLE patients.


Initial crohn’s disease flare-up following an anal trauma in a 2.5-year-old boy: a case report
Ali Samady Khanghah , Maryam Khalesi , Department of Pediatrics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Hokmabadi, Khashayar Atqiaee,
Volume 81, Issue 8 (11-2023)
Abstract
Background: Crohn's disease is considered a heterogeneous disorder with multi-factorial etiologies, in which the interaction of genetics and environment manifests the disease. Adverse childhood experiences can affect future physical and mental health outcomes. The rich innervation of the intestine with the Vagus nerve and hormonal interactions on the one hand and the constant contact of the digestive system with various pathogenic and non-pathogenic antigens have a proven role in autoimmune diseases and can gradually be chosen as a therapeutic goal.
Case Presentation: We are reporting a case of Crohn's flare-up after trauma in a pediatric case. A 2.5-year-old male with a through and through anal trauma was presented in Akbar Children's Hospital, Mashhad, Iran, Spring 2023 with active bleeding but conscious. He then underwent a physical examination under general anesthesia in the operating room. At the Lithotomy position, a penetrating wound at the 3 o'clock anal verge and a tear in the perineal area at 9 o'clock, which, according to the evidence of pus discharge, were seen hours after the incident which was irrigated with normal saline and Hydrogen Peroxide respectively. Due to the contamination of the area, a supportive colostomy was decided to be closed after six months. At the appointed time during the colonoscopy, the pediatric gastroenterologist noticed extensive inflammation in the distal patch of the colon, which was consistent with Crohn's disease. Histopathological studies then confirmed this diagnosis. This was even though there were no symptoms of inflammatory bowel disease in the history of the boy's illness before the accident. The patient is then treated with prednisolone, Asacol, and ciprofloxacin, and after the disease subsides, the colostomy surgery team closes the disease.
Conclusion: Trauma can be an immune-disrupting factor in the digestive system, and trying to reset the brain-gut axis can be chosen as a therapeutic goal.

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