BGLAP and osteoporosis: Our observation that GLP2 was positively associated with osteocalcin in the women without osteoporosis is consistent with the increase in osteocalcin previously observed in post-menopausal women after the subcutaneous administration of GLP2 under fasting conditions52 and also with the aforementioned report on increased osteocalcin in osteoblast cell lines after GLP2 treatment37.