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1.
Article in Chinese | WPRIM | ID: wpr-826513

ABSTRACT

OBJECTIVE@#To explore the genetic basis for a child suspected for hypokalemic periodic paralysis.@*METHODS@#Clinical data of the patient was collected, and venous blood samples were taken from the patient and his parents for the extraction of genomic DNA. Next generation sequencing (NGS) with target capture was carried out to detect potential variants. Suspected variants were validated by Sanger sequencing.@*RESULTS@#The child developed fatigue without obvious reason at the age of 15. Laboratory test revealed hypokalemia but normal serum magnesium. Genetic testing discovered that he has carried two variants in the SLC12A3 gene, namely c.179C>T and c.539C>A. The patient was diagnosed with Gitelman syndrome.@*CONCLUSION@#For children with hypokalemia, genetic testing should be considered for the differential diagnosis of Gitelman syndrome from hypokalemia due to other causes.

2.
Article | WPRIM | ID: wpr-833848

ABSTRACT

Background/Aims@#To determine the value of salivary pepsin in discriminating sub-types of gastroesophageal reflux disease (GERD) and GERD-related disorders. @*Methods@#Overall, 322 patients with different sub-types of GERD and 45 healthy controls (HC) were studied. All patients took Gastroesophageal Reflux Disease Questionnaire (GerdQ) and underwent endoscopy and 24-hour esophageal pH monitoring and manometry. Salivary pepsin concentration (SPC) was detected by using colloidal gold double-antibody immunological sandwich assay. Oral esomeprazole treatment was administrated in the patients with non-erosive reflux disease (NERD) and extra-esophageal symptoms (EES). @*Results@#Compared to HC, patients with erosive esophagitis, NERD, EES, EES plus typical GERD symptoms, or Barrett’s esophagus had a higher prevalence of saliva and SPC (all P < 0.001). There was no significant difference in the positive rate for pepsin in patients with functional heartburn or GERD with anxiety and depression, compared to HC. After esomeprazole treatment, the positive rate and SPC were significantly reduced in NERD (both P < 0.001) and in EES (P = 0.001 and P = 0.002, respectively). Of the 64 NERD patients, 71.9% (n = 46) were positive for salivary pepsin, which was significantly higher than the rate (43.8%, n = 28) of pathological acid reflux as detected by 24-hour esophageal pH monitoring (P = 0.002). @*Conclusions@#Salivary pepsin has an important significance for the diagnosis of GERD and GERD-related disorders. Salivary pepsin and 24-hour esophageal pH monitoring may complement with each other to improve the diagnostic efficiency.

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