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Published on: October 27, 2009
Pediatric Mesangial Proliferative Glomerulonephritis Has Increased the Platelet Thrombus Formation Potentials under
Takashi Omae1,2, Tomoaki Ishikawa1, Kenichi Ogiwara1
1Department of Pediatrics, Nara Medical University, Kashihara, Japan.
Insights
Pediatric mesangial proliferative glomerulonephritis (MesPGN) increases platelet thrombus formation potential under high-shear conditions. This study assessed platelet thrombus formation in children with MesPGN, finding enhanced clot formation.
Area of Science:
- Nephrology
- Hematology
- Pediatric Medicine
Background:
- Blood coagulation is implicated in glomerulonephritis (GN) pathophysiology.
- Previous studies suggested hypercoagulability in immunoglobulin A nephropathy (IgAN) correlates with disease severity.
- The coagulation status in mesangial proliferative GN (MesPGN) requires further elucidation.
Purpose of the Study:
- To investigate platelet thrombus formation (PTF) under high-shear flow in pediatric patients with MesPGN.
- To compare PTF parameters in MesPGN patients with healthy pediatric controls.
- To evaluate changes in PTF during treatment and its relationship with pathological severity.
Main Methods:
- Utilized a microchip-based flow chamber system (T-TAS®) to assess PTF in whole blood from 29 pediatric MesPGN patients and controls.
- Employed collagen-coated microchips (PL-chip) to measure times to increase by 10 and 30 kPa (T10 and T30) from baseline.
- Analyzed PTF parameter changes during treatment and correlations with renal biopsy findings.
Main Results:
- Pediatric MesPGN patients exhibited significantly shorter T10 and T30 times and larger area under the curve compared to controls (p < 0.05).
- PTF parameters were enhanced during a 3-week treatment course but normalized post-treatment.
- No significant correlation was found between PTF parameters and pathological severity in MesPGN.
Conclusions:
- Pediatric MesPGN is associated with an increased potential for platelet thrombus formation under high-shear flow.
- The findings suggest altered coagulation dynamics in pediatric MesPGN.
- PTF assessment may offer insights into the pathophysiology of MesPGN.
Introduction:
Blood coagulation is associated with glomerulonephritis (GN) pathophysiology. Using whole-blood-based rotational thromboelastometry, we recently reported that the degree of hypercoagulability in pediatric patients with immunoglobulin A nephropathy (IgAN), a GN, might be associated with pathological severity. To further clarify the coagulation status of mesangial proliferative GN (MesPGN), we assessed the platelet thrombus formation (PTF) under high-shear flow using a microchip-based flow chamber system (T-TAS®).
Methods:
Thirty-four pediatric patients definitively diagnosed with MesPGN by renal biopsy at Nara Medical University Hospital between 2015 and 2022 were enrolled, and 29 patients (case group; median age, 8.0 years) were assessed. Microchips coated with collagen (PL-chip) were used to assess PTF at high-shear in whole blood. The times to increase by 10 and 30 kPa (T10 and T30) from baseline were calculated and compared with those of the pediatric controls. Changes in the parameters during the treatment course and the relationship between pathological severity and the parameters were evaluated.
Results:
T10 and T30 parameters in the PL-chip were significantly shorter, and the area under the curves were greater in the case group than those in the control group (both p < 0.05). Each parameter was enhanced during the 3-week treatment but improved after the end of treatment. No significant relationship was observed between pathological severity and these parameters. Little PTF difference was observed between IgAN and Henoch-Schönlein purpura nephritis.
Conclusions:
Pediatric MesPGN increased the potential for PTF under high-shear flow conditions.
