Lamivudine, Entecavir, or Tenofovir Treatment of Hepatitis B Infection: Effects on Calcium, Phosphate, FGF23 and Indicators of Bone Metabolism
Ann. hepatol
;
16(2): 207-214, Mar.-Apr. 2017. tab, graf
Artículo
en Inglés
| LILACS
| ID: biblio-887224
ABSTRACT
ABSTRACT Background. Patients with chronic hepatitis B virus (HBV) are often treated with nucleoside/nucleotide antiviral agents and metabolic bone toxicity is a possible concern. Objective. To determine the relationships between fibroblast growth factor 23 (FGF23), a phosphaturic hormone, bone mineral density (BMD), and bone biochemical abnormalities in these patients. Material and methods. This is a cross-sectional observational study comparing HBV-infected subjects treated for at least one year with tenofovir (TDF), lamuvidine (LVD), entacavir (ETV), or not treated (CON). Patients with abnormalities in either calcium (Ca), phosphate (PO4), intact parathyroid hormone (iPTH) or FGF23 were further evaluated with BMD by DXA. Results. No difference in liver enzymes or renal function seen among groups, but hypophosphatemia was seen in all groups with the highest incidence with TDF treatment (14%). FGF 23 levels were found to be elevated in 11.1% of TDF patients, 2.77% amongst controls. No elevations were found in the LVD or ETV groups. Among a subset of subjects (FGF23, PO4, and/or Ca abnormalities) who underwent further evaluation, 67% had insufficient 25-OH vitamin D, and 30% had elevated 24 h urinary Ca or PO4 excretion. No patients with FGF23 abnormalities had urine abnormalities. 40% had low DXA Z-score (<-2) at spine or hip but there was no difference between control and antiviral treatment groups and the mean FRAX score was 2.33% for major osteoporotic fractures and 0.29% for hip fracture. Conclusion. Abnormalities in bone metabolism, particularly involving vitamin D insufficiency, in HBV-treated subjects were observed with a small increased likelihood in TDF treated patients.
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Índice:
LILACS (Américas)
Asunto principal:
Antivirales
/
Fosfatos
/
Huesos
/
Calcio
/
Lamivudine
/
Hepatitis B Crónica
/
Factores de Crecimiento de Fibroblastos
/
Tenofovir
/
Guanina
Tipo de estudio:
Estudio diagnóstico
/
Estudio de etiología
/
Estudio observacional
/
Estudio de prevalencia
/
Factores de riesgo
Límite:
Humanos
Idioma:
Inglés
Revista:
Ann. hepatol
Asunto de la revista:
Gastroenterologia
Año:
2017
Tipo del documento:
Artículo
País de afiliación:
Canadá
Institución/País de afiliación:
University of British Columbia/CA
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