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[Disorders of intrarenal hemodynamics in glomerulopathies]
Insights
Intrarenal hypertension is common in chronic glomerulonephritis and diabetes mellitus, linked to kidney damage and function decline. Early detection via renal functional reserve is crucial for managing these conditions.
Area of Science:
- Nephrology
- Internal Medicine
- Renal Physiology
Background:
- Intrarenal hemodynamics plays a critical role in kidney health.
- Chronic glomerulonephritis (CGN) and type I diabetes mellitus are major causes of kidney disease.
- Understanding intrarenal hypertension is key to managing renal function.
Purpose of the Study:
- To investigate intrarenal hemodynamics in patients with CGN and type I diabetes mellitus.
- To assess the prevalence and clinical significance of intrarenal hypertension in these conditions.
- To explore the relationship between intrarenal hypertension and disease progression.
Main Methods:
- Examined intrarenal hemodynamics in 101 CGN patients and 111 type I diabetes mellitus patients.
- Diagnosed intrarenal hypertension based on renal functional reserve (RFR) depletion.
- Correlated RFR with clinical parameters like albuminemia and blood creatinine.
Main Results:
- Intrarenal hypertension was prevalent across all CGN variants, particularly in severe urinary syndrome (83%).
- In type I diabetes mellitus, intrarenal hypertension increased with disease stage, from 34% (normal albuminuria) to 93% (clinical stage).
- RFR depletion was significantly associated with arterial hypertension, albuminemia, and blood creatinine in CGN.
Conclusions:
- Intrarenal hypertension is a significant finding in both CGN and diabetic nephropathy.
- RFR depletion serves as an indicator of intrarenal hypertension and associated complications.
- Hemodynamic disorders in diabetes are primary, linked to metabolic issues, with early morphological signs of hyperperfusion failure.
Abstract:
The intrarenal hemodynamics was examined in 101 patients with chronic glomerulonephritis (CGN) and 111 patients with type I diabetes mellitus. Intrarenal hypertension was diagnosed from renal functional reserve (RFR) depletion. In CGN intrarenal hypertension was revealed in all clinical and morphological variants of nephritis: in 40% of patients with a nephrotic variant, in 25% with a latent variant and in 83% of patients with nephritis concurrent with the severe urinary syndrome. In focal segmental glomerulonephritis and fibroplastic nephritis, the depleted RFR was encountered 4 times more frequently than the preserved one. There was a association between RFR and arterial hypertension, albuminemia, blood creatinine. In diabetes mellitus intraglomerular hypertension was diagnosed in 34% of patients without renal damage (those having normal albuminuria), in 79% at the preclinical stage of diabetic nephropathy (in microalbuminuria) and in 93% at its clinical stage. Intrarenal hemodynamic disorders in diabetes mellitus are primary and provoked by hormonal metabolic disorders. The morphological signs of renal hyperperfusion failure develop at the preclinical stage of diabetic nephropathy.