Risk of secondary osteoporosis due to lobular cholestasis in non-cirrhotic primary biliary cholangitis.
J Gastroenterol Hepatol
; 32(9): 1611-1616, 2017 Sep.
Article
en En
| MEDLINE
| ID: mdl-28114749
ABSTRACT
BACKGROUND AND AIM:
It remains unclear whether primary biliary cholangitis (PBC) represents a risk factor for secondary osteoporosis.METHODS:
A case-control study was conducted to examine bone mineral density and bone turnover markers in middle-aged postmenopausal PBC patients without liver cirrhosis. We compared the incidence of low bone mineral density between propensity-score matched subgroups of PBC patients and healthy controls and investigated the mechanisms underlying unbalanced bone turnover in terms of the associations between bone turnover markers and PBC-specific histological findings.RESULT:
Our analysis included 128 consecutive PBC patients, all postmenopausal women aged in their 50s or 60s, without liver cirrhosis or fragility fracture at the time of PBC diagnosis. The prevalence of osteoporosis was significantly higher in the PBC group than in the control group (26% vs 10%, P = 0.015, the Fisher exact probability test). In most PBC patients (95%), the level of bone-specific alkaline phosphatase was above the normal range, indicating increased bone formation. On the other hand, the urine type I collagen-cross-linked N-telopeptide showed variable levels among our PBC patients, indicating unbalanced bone resorption. Advanced fibrosis was associated with low bone turnover. Lobular cholestasis, evaluated as aberrant keratin 7 expression in hepatocytes, showed significant negative correlations with bone formation and resorption, indicating low bone turnover.CONCLUSION:
Our results show that, compared with healthy controls, even non-cirrhotic PBC patients have significantly higher risk of osteoporosis. Moreover, lobular cholestasis was associated with low bone turnover, suggesting this feature of PBC may itself cause secondary osteoporosis in PBC patients.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Osteoporosis
/
Colangitis
/
Colestasis
Tipo de estudio:
Etiology_studies
/
Observational_studies
/
Prevalence_studies
/
Risk_factors_studies
Límite:
Aged
/
Female
/
Humans
/
Middle aged
Idioma:
En
Revista:
J Gastroenterol Hepatol
Asunto de la revista:
GASTROENTEROLOGIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
Japón