ICEECE2012 Poster Presentations Pituitary Clinical (183 abstracts)
University Federico II, Napoli, Italy.
Patients with hyperprolactinemia have impaired bone metabolism and bone mineral density (BMD) partially represents bones health.
To evaluate vitamin D levels, PTH, Ca and P, BMD and bone morphometry in patients with prolactin-secreting pituitary adenomas.
Forty-four patients (30 W, 40±11 years, BMI 27.6±5 kg/m2) underwent to lumbar and femoral DEXA, to vertebral morphometry by X-ray and was calculated the SDI (spinal deformity index), a surrogate method for the estimation of microarchitecture and bone quality. Forty-two age and BMI matched served as controls.
Vitamin D were lower in patients than in controls (24.1±10 ng/ml vs 30.4±14, P=0.018). Vitamin D deficiency was present in 39.5% (<20 ng/ml) vs 12% of controls (P<0.01), insufficiency in 32.6% (2030 ng/ml) vs 32% (P=NS) and normal levels of vitamin D in 27.9 vs 56% (>30 ng/dl) in patients and controls (P<0.01). Lumbar spine T-score was −0.2±1 vs 0.11±1.15 in patients and in controls (P=NS) and −0.3±1.1 vs −0.16±0.5 (P=NS) at femoral neck. At lumbar spine 37.5% of patients had osteopenia and 56.3% had normal BMD while in controls 7.1% had osteoporosis, 45.2% osteopenia and 47.6% normal BMD. At femoral neck 3.4% of patients had osteoporosis, 31% osteopenia and 65.5% had a normal BMD, and in controls 7.1% showed osteopenia and 92.9% a normal BMD. The SDI was higher in patients than in controls (2±1 vs 0.4±0.2; P<0.01).
In hyperprolactinaemic patients vitamin D is lower than in controls; although BMD values are normal, our data seems to show that there is a higher prevalence of vertebral fractures and worse bone quality than expected by BMD values.
Declaration of interest: The authors declare that there is no conflict of interest that could be perceived as prejudicing the impartiality of the research project.
Funding: This research did not receive any specific grant from any funding agency in the public, commercial or not-for-profit sector.