Abstract:
BACKGROUND AND AIMS:Primary biliary cirrhosis (PBC) might be complicated by osteoporosis, whose etiology remains unknown but seems to be multifactorial. Prevalence rates of 30% to 60% for distal renal tubular acidosis (DRTA) have been reported in PBC patients, generally as incomplete DRTA. Although it is undisputed that a reduced bone mineral density (BMD) is the expected outcome among patients who have been suffering from longstanding chronic metabolic acidosis, it is unclear if incomplete DRTA is also associated with metabolic bone disease in PBC patients. The present study was undertaken to compare the BMD of PBC patients with and without DRTA. METHODS:The BMD of 23 PBC patients (11 with DRTA and 12 without), all with normal clearance of creatinine, was assessed by dual energy radiograph absorptiometry. The diagnosis of DRTA was made if the urine pH was above 5.4 in all samples after the oral acid overload, showing tubular inability to acidify urine in the presence of test-induced systemic metabolic acidosis. RESULTS:Densitometric signs of osteoporosis were found in 82% of DRTA cases and in 83% of patients without DRTA (difference not significant). There were no significant differences in BMD measurement, T and Z scores of patients with and without DRTA. CONCLUSIONS:The present study could not support a correlation between the presence of DRTA and the bone loss observed in PBC patients.
journal_name
J Gastroenterol Hepatoljournal_title
Journal of gastroenterology and hepatologyauthors
Farias AQ,Gonçalves LL,Cançado EL,Seguro AC,Campos SB,Abrantes-Lemos CP,Carrilho FJdoi
10.1111/j.1400-1746.2004.03517.xsubject
Has Abstractpub_date
2005-01-01 00:00:00pages
147-52issue
1eissn
0815-9319issn
1440-1746pii
JGH3517journal_volume
20pub_type
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