Interstitial nephritis and immune complex-mediated glomerulonephritis are the two common renal manifestations of primary Sjögren's syndrome (SS). Here, we discuss three cases of primary SS where presenting manifestation was distal renal tubular acidosis. The possibility of an underlying autoimmune disorder should be considered in a patient presenting with distal tubular acidosis or recurrent hypokalemic periodic paralysis as treatment of primary disease improves the outcome of illness.
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http://dx.doi.org/10.4103/1319-2442.229289 | DOI Listing |
Nephrol Dial Transplant
January 2025
Paediatric Nephrology, UZ Leuven and Department of Cellular and Molecular Physiology, KUL, Leuven, Belgium.
Background And Hypothesis: ATP6V1B1 encodes a subunit of the vacuolar H+-ATPase and pathogenic variants are associated with autosomal recessive distal renal tubular acidosis (dRTA) with deafness. Heterozygous variants predicted to affect a specific amino acid, Arg394, have been recurrently reported in dRTA but their significance has been unclear. We hypothesised that these variants are associated with a dominant disease mechanism.
View Article and Find Full Text PDFEndocr Metab Immune Disord Drug Targets
January 2025
Department of Clinical and Experimental Medicine, Gastroenterology Section, "Gaspare Rodolico" Policlinico Hospital, University of Catania, Catania, Italy.
Sjögren's syndrome (SS) is an autoimmune disease and its management is palliative. There is no specific dietary protocol for SS patients. A gluten-free diet has been tested in SS patients with celiac disease (CD) and indicated modest improvements.
View Article and Find Full Text PDFIndian J Pediatr
January 2025
Pediatric Endocrinology Unit, Department of Pediatrics, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, India.
Spec Care Dentist
January 2025
Department of Pediatric and Preventive Dentistry, Centre for Dental Education and Research, AIIMS, New Delhi, India.
Renal tubular acidosis (RTA) is a group of disorders in which there is an alteration in acid-base homeostasis because of the impairment of nephrons to excrete hydrogen ions or reabsorb bicarbonate ions, resulting in chronic metabolic acidosis. RTA is an important cause of rickets, particularly 'resistant rickets'. Dental manifestations frequently reported in patients with RTA include enamel hypoplasia and amelogenesis imperfecta, affecting permanent dentition.
View Article and Find Full Text PDFPediatr Nephrol
January 2025
Division of Nephrology, Department of Pediatrics, Chang Gung Memorial Hospital and Chang Gung University, Taoyuan, Taiwan.
Distal renal tubular acidosis (dRTA) is a significant clinical expression of Sjögren's syndrome (SS). While SS-related dRTA is traditionally linked to impaired H-ATPase, we report a unique case demonstrating selectively decreased anion exchanger 1 (AE1) expression with preserved H-ATPase expression. A 16-year-old girl with SS presented with muscle weakness, difficulty in ambulation, and severe hypokalemia.
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