Fifteen patients with Bartter's syndrome (hyponatremic hypochloremic hypokalemic metabolic alkalosis) were compared with 15 healthy volunteers. Red blood cell Na+/H+ and Cl-/HCO3- exchanges were enhanced in all patients with Bartter's syndrome. In calciuric normomagnesemic patients, sensitive to nonsteroidal anti-inflammatory drugs (classic Bartter's syndrome), red blood cell Na+,K+,2Cl- cotransport was markedly reduced, calcium-dependent K+ permeability was moderately increased, and up to 60% of sodium permeability was represented by cAMP-activated fraction (presumably human analog of beta-isoform of Na+/H+ exchange). In noncalciuric hypomagnesemic patients insensitive to indomethacin (Gitelman's syndrome), Na+,K+,2Cl- cotransport was enhanced, Na+ permeability was increased due to calmodulin-dependent fraction, and calcium-dependent K+ permeability was markedly enhanced. A new subtype of Bartter-like syndrome ("variant Bartter's syndrome") has been described in which calciuria, hypomagnesemia, and insensitivity to nonsteroidal anti-inflammatory drugs were associated with decreased Na+,K+,2Cl- cotransport, enhanced calmodulin-activated fraction of Na+ influx, and reduced calcium-dependent K+ permeability.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1161/01.hyp.30.6.1338 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Etiology, clinical characteristics, genetic profile, and outcomes of children with refractory rickets at a referral center in India: a cohort study.
Pediatr Nephrol
January 2025
Pediatric Nephrology Services, Department of Pediatrics, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Pondicherry, 605006, India.
Background: Limited research exists regarding the genetic profile, clinical characteristics, and outcomes of refractory rickets in children from India.
Methods: Patients with refractory rickets aged ≤ 18 years were enrolled. Data regarding clinical features, etiology, genotype-phenotype correlation, and estimated glomerular filtration rate (eGFR) were recorded.
A Rare Case of Bartter Syndrome Type 3 Presenting With New-Onset Diabetes Mellitus.
Cureus
December 2024
Department of Medicine, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND.
Bartter syndrome is a rare genetic disorder that often presents in the early phase of life and is caused by mutations in multiple genes encoding the transporters and channels, which are responsible for the reabsorption of various ions in the nephrons. Clinically, it presents with vomiting, failure to thrive, and dehydration. Rare instances of acquired Bartter syndrome have been linked to sarcoidosis, tuberculosis, and autoimmune diseases.
View Article and Find Full Text PDFAutoimmune Tubulopathies.
J Am Soc Nephrol
January 2025
Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université Paris Cité, F-75006 Paris, France.
The renal tubule and collecting duct express a large number of proteins, all having putative immunoreactive motives. Therefore, all can be the target of pathogenic autoantibodies. However, autoimmune tubulopathies seem to be rare and we hypothesize that they are underdiagnosed.
View Article and Find Full Text PDFEctopic olfactory neuroblastoma is associated with increased frequency of syndrome of inappropriate antidiuretic hormone secretion and reduced disease control: Case series with systematic review and pooled analysis.
Int Forum Allergy Rhinol
January 2025
Section of Otorhinolaryngology-Head and Neck Surgery, Department of Neuroscience, University of Padova, Padova, Italy.
Introduction: Olfactory neuroblastoma (ONB) is a rare malignant tumor originating from the olfactory neuroepithelium, typically within the sinonasal cavity. Cases of ONB originating outside of the olfactory cleft area are extremely rare and are referred to as "ectopic" (eONB), in contrast to "orthotopic" tumors (oONB). ONB has been associated with paraneoplastic syndromes (PNSs), including the syndrome of inappropriate antidiuretic hormone secretion (SIADH).
View Article and Find Full Text PDFPolymyxin-B induced Bartter-like syndrome: an unusual adverse effect.
Ann Med Surg (Lond)
December 2024
Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh.
Introduction And Importance: Bartter syndrome is a rare autosomal recessive disorder affecting renal tubular function leading to disturbances in electrolyte and volume homeostasis. It can also manifest as Bartter-like syndrome (BLS), a rare side effect of certain medications. Polymyxin-B, an antibiotic used to treat multidrug-resistant infections is infrequently associated with BLS.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!