Hypercalcemia in Pregnancy Due to CYP24A1 Mutations: Case Report and Review of the Literature

Pathogenic mutations of CYP24A1 lead to an impaired catabolism of vitamin D metabolites and should be considered in the differential diagnosis of hypercalcemia with low parathyroid hormone concentrations. Diagnosis is based on a reduced 24,25-dihydroxyvitamin D to 25-hydroxyvitamin D ratio and confirmed by genetic analyses. Pregnancy is associated with an upregulation of the active vitamin … Leggi tutto

La carbamazepina antagonizza la soppressione di vitamina D-mediata dell’iperparatiroidismo secondario: patogenesi e possibilità terapeutiche

Carbamazepin antagonizes the vitamin D-mediated suppression of secondary hyperparathyroidism: pathogenesis and therapeutical options Abstract. This commentary updates: 1) the patophisiology responsible for carbamazepine-induced resistance to paricalcitol suppression of PTH in CKD; 2) the contribution of vitamin D deficiency to the adverse effects of carbamazepine; 3) the benefits of cholecalciferol supplementation either alone or in combination … Leggi tutto

Kidney Stone Academy

Un corso on line, oramai non più FAD, sulla Fisiopatologia della Calcolosi Renale. GLi AA sono la sicurezza che il corso vale assolutamente la pena di essere visto. Marco Lombardi

Calcium and Vitamin D Supplementation and Their Association with Kidney Stone Disease: A Narrative Review

Abstract: Kidney stone disease is a multifactorial condition influenced by both genetic predispositionand environmental factors such as lifestyle and dietary habits. Although different monogenic polymorphismshave been proposed as playing a causal role for calcium nephrolithiasis, the prevalenceof these mutations in the general population and their complete pathogenetic pathway is yet tobe determined. General dietary advice … Leggi tutto

Evidence for epistatic interaction between VDR and SLC13A2 genes in the pathogenesis of hypocitraturia in recurrent calcium oxalate stone formers

enetic factors play a key role in the pathogenesis of hypocitraturia, a common risk factor for nephrolithiasis. The Na+-dicarboxylate cotransporter NaDC1, encoded by the sodium-dicarboxylate cotransporter (SLC13A2) gene, is a major determinant of urinary citrate excretion and its biological functions are regulated also by the vitamin D/Vitamin D receptor (VDR) biological system. The aim of … Leggi tutto

‘Bad dietary habits’ and recurrent calcium oxalate nephrolithiasis

Case report: A 32-year-old truck driver had previously been treated with allopurinol because of hyperuricaemia and gouty =Protein consumption (g/day) arthritis. After having first formed a kidney stone at (adapted from [5]); age 20, he had passed calculi annually for 8 years before he finally underwent ESWL for bilateral radio- it amounted to 108.1 g … Leggi tutto

Iter diagnostico e terapia della calcolosi

La nefrolitiasi è una malattia diffusa nella popolazione generale con una prevalenza in aumento negli ultimi anni. La sua rilevanza clinica è gravata dalla tendenza a recidivare comportando così un rischio aggiuntivo di complicanze sia renali (fino alla malattia renale cronica) che extrarenali (come la malattia metabolica dell’osso). D’altra parte l’inquadramento clinico della malattia può … Leggi tutto

Retention and growth of urinary stones: insights from imaging

Recent work in nephrolithiasis has benefited from 2 special kinds of imaging: endoscopic study of patient kidneys with high-quality instruments, and examination of stones with microscopic computed tomography (micro CT). The combination of these has provided new evidence that there is more than 1 mechanism by which stones are retained in the kidney until they … Leggi tutto