objective: runt-related transcription factor 2 (runx2) and osterix (osx) as two specific osteoblast transcription factors and distal-less homeobox 5 (dlx5) as a non-specific one are of paramount importance in regulating osteoblast related genes including osteocalcin, bone sialoprotein (bsp), osteopontin and collagen type iα1. the present study sets out to investigate whether epigenetic regulati...

Osteoblastoma-like osteosarcoma, a rare form of osteosarcoma, is a malignant lesion associated with risks of both local recurrence and distant metastasis. The differential diagnosis of osteoblastoma-like osteosarcoma from osteoblastoma and aggressive osteoblastoma remains controversial and challenging. Previous studies suggest that these three types of tumor are distinct entities. However, work...

We report a case of prostatic carcinoma with testicular metastasis, which mimicked malignant lymphoma of the testis. The patient was a 71 year-old man with a history of prostate adenocarcinoma of Gleason score 9 (4+5) diagnosed in 2001 for which he received hormonal therapy. Four years later, the patient developed multiple osteoblastic bone metastases. Radiotherapy of the bone metastases was gi...

35-year-old male presented with multiple swellings in left leg, headache, weakness of limbs for 4 months, and blurring of vision for the last 15 days. On examination, he was pale, cachexic with generalized lymphadenopathy and lower motor neuron type weakness of limbs sparing right upper limb. Blood investigations showed anemia with high alkaline phosphatase. Chest radiograph revealed osteoscler...

Pancytopenia is a major cause of morbidity in acute myeloid leukemia (AML), yet its cause is unclear. Normal osteoblastic cells have been shown to support hematopoiesis. To define the effects of leukemia on osteoblastic cells, we used an immunocompetent murine model of AML. Leukemic mice had inhibition of osteoblastic cells, with decreased serum levels of the bone formation marker osteocalcin. ...

Osteoblastic meningioma is a subtypes of meningioma. Intracranial isolated osteoblastic meningioma is extremely unusual. We reported a case of osteoblastic meningioma in the right frontal region in a 15-year-old girl who presented with repeated unconsciousness for 20 days. Computed tomography (CT) revealed a well-defined calcified mass with CT value of 802.5 HU in the right frontal region next ...

Osteoblastic differentiation is an essential part of bone formation that compensates resorbed bone matrix to maintain its structural integrity. Cells in an osteoblast lineage develop differentiated phenotypes during a long-term culture in vitro. However, intrinsic mechanisms whereby these cells differentiate into mature osteoblasts are yet unclear. Bone morphogenetic proteins (BMPs) stimulate o...