The mechanism by which mixed chimerism reverses autoimmunity in type 1 diabetes has not been defined. NOD mice have a well-characterized defect in the production of myeloid progenitors that is believed to contribute significantly to the autoimmune process. We therefore investigated whether chimerism induces a correction of this defect. Mixed chimerism restored production of myeloid progenitors ...

Stem cells are distinguished from other cells by two characteristics: (1) they can divide to produce copies of themselves (self-renewal) under appropriate conditions and (2) they are pluripotent, or able to differentiate into any of the three germ layers: the endoderm (which forms the lungs, gastrointestinal tract, and interior lining of the stomach), mesoderm (which forms the bones, muscles, b...

Inhibition of granulopoiesis was studied using the diffusion chamber (DC) technique. When mature granulocytes from human blood or syngeneic mouse peritoneal fluid were added to mouse bone marrow cells cultured in DC, a significant depression of granulopoiesis took place, and a stimulation of macrophage formation was observed in 7-day cultures. Human granulocytes had a stronger inhinitory capaci...

RATIONALE Calcification of heart valve structures is the most common form of valvular disease and is characterized by the appearance of bone-like phenotypes within affected structures. Despite the clinical significance, the underlying etiology of disease onset and progression is largely unknown and valve replacement remains the most effective treatment. The SRY-related transcription factor Sox9...

Scientific literature describes autogenous bone as the gold standard among graft materials for alveolar reconstructive procedures. Alveolar ridge augmentation has been clinically achieved with different forms of autogenous bone, including autogenous cortical bone particulate (ACBP). However, few histologic studies demonstrating the biologic potential and healing dynamics following the use of AC...

Inhibiting osteoclasts and osteoclast precursors to reduce bone resorption is an important strategy to treat osteoclast-related diseases, such as osteoporosis, inflammatory bone loss, and malignant bone metastasis. However, the mechanism by which apoptosis is induced in the osteoclasts and their precursors are not completely understood. Here, we used nitrogen-containing bisphosphonate zoledroni...

Abstract A maxillary transverse deficiency is a common craniofacial problem. Rapid palatal expansion (RPE) has been traditionally considered for the treatment of children and young adolescents, but this not applicable in late adolescents or adults due to ossification facial sutures. surgically assisted rapid (SARPE) was initially advocated group patients, surgical procedure associated with morb...

It is well-known that cancer therapies, including chemotherapy drugs, aromatase inhibitors and gonadotropin-releasing homone analogues, commonly contribute to remarkably reduce the bone mineral density, subsequently increase rate of loss. For instance, in patients with prostate treated androgene deprivation therapy (ADT), or drugs such as doxorubicin cisplatin calcicum levels were significantly...

Bone is a peculiar connective tissue which functionally interacts with many other organs and tissues, including bone marrow, lymphoid tissue, kidney, adipose tissue, endocrine pancreas, brain and gonads. Bone functions are accomplished by three principal cell types: the osteoblasts, cells of mesenchymal origin having osteogenic functions, the osteoclasts, giant multinucleated cells arising from...

BACKGROUND Although the bone's capability of dental implant osseointegration has clinically been utilised as early as in the Gallo-Roman population, the specific mechanisms for the emergence and maintenance of peri-implant bone under functional load have not been identified. Here we show that under immediate loading of specially designed dental implants with masticatory loads, osseointegration ...