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The role of prostanoids in pediatric diseases employing mass spectrometric techniques
H W Seyberth1, H Schweer, B Tönshoff
1Kinderklinik der Philipps-Universität, Marburg, FRG.
Insights
Urinary prostanoid and metabolite excretion reveals distinct patterns in pediatric kidney and systemic diseases. Elevated primary prostanoid excretion indicates renal involvement, while elevated metabolites suggest systemic prostanoid activity.
Area of Science:
- Biochemistry
- Pediatric Nephrology
- Clinical Medicine
Background:
- Prostanoids play crucial roles in renal and systemic physiological processes.
- Assessing prostanoid activity through urinary excretion is vital for diagnosing various pediatric conditions.
- Distinct patterns of prostanoid and metabolite excretion can differentiate between renal and systemic involvement.
Purpose of the Study:
- To investigate the diagnostic utility of urinary prostanoid and metabolite excretion rates.
- To differentiate between renal and systemic prostanoid activity in children with various diseases.
- To correlate specific urinary excretion patterns with distinct clinical conditions.
Main Methods:
- Analysis of urinary excretion rates of primary prostanoids and their metabolites.
- Comparison of excretion rates across different pediatric renal and systemic diseases.
- Clinical correlation of biochemical findings with patient diagnoses.
Main Results:
- Children with renal diseases and systemic involvement (e.g., Bartter syndrome) showed exclusively elevated primary prostanoid excretion.
- Patients with systemic diseases and renal involvement (e.g., hyperprostaglandin E syndrome) had elevated rates of both primary prostanoids and their metabolites.
- Systemic vascular diseases without renal involvement (e.g., Henoch-Schönlein purpura) exhibited elevated prostanoid metabolite excretion only, with normal primary prostanoid levels.
Conclusions:
- Urinary prostanoid and metabolite excretion patterns serve as valuable biomarkers for assessing renal and systemic prostanoid activity.
- Distinct urinary profiles can help distinguish between primary renal conditions and systemic diseases with secondary renal impact.
- This approach aids in the clinical management and diagnosis of complex pediatric disorders involving prostanoid dysregulation.
Abstract:
Urinary excretion rates of primary prostanoids and their metabolites are useful parameters to assess as well renal as systemic prostanoid activity under clinical conditions. Children with renal diseases with systemic involvement, such as Bartter syndrome, renal diabetes insipidus, postobstructive hydronephrosis, and acute renal allograft rejection, have exclusively elevated excretion rates of primary prostanoids. In patients with systemic diseases and additional renal involvement, such as hyperprostaglandin E syndrome and hemolytic uremic syndrome, rates of primary prostanoids and of their metabolites are elevated. In contrast, systemic vascular diseases without renal involvement, such as Henoch-Schönlein purpura and persistent pulmonary hypertension in the newborn, are associated only with increased systemic prostanoid activity indicated by elevated excretion rates of prostanoid metabolites, whereas excretion rates of primary metabolites are in the normal range.