We have found that adenine enhanced the purinoceptor-operated cytoplasmic Ca2+ oscillation in rat megakaryocytes at submillimolar concentrations. Guanine and other nucleic acid bases had no effect on this system. Adenine enhanced the reaction intensity but had no effect on the threshold concentration of ATP to evoke the oscillation.
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http://dx.doi.org/10.1111/j.1476-5381.1994.tb13076.x | DOI Listing |
J Bone Miner Res
December 2024
Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, 46202, United States.
Achieving bone union remains a significant clinical dilemma. The use of osteoinductive agents, specifically bone morphogenetic proteins (BMPs), has gained wide attention. However, multiple side effects, including increased incidence of cancer, have renewed interest in investigating alternatives that provide safer, yet effective bone regeneration.
View Article and Find Full Text PDFRegen Ther
June 2024
Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, Chiba, 2608670, Japan.
Introduction: Platelet-rich plasma obtained by centrifuging peripheral blood can promote osteogenesis owing to its abundant growth factors but has drawbacks, including rapid growth factor loss and inconsistent effects depending on donor factors. To overcome these issues, we were the first in the world to use freeze-dried human induced pluripotent stem cell-derived megakaryocytes and platelets (S-FD-iMPs) and found that they have osteogenesis-promoting effects. Since turbulence was found to activate platelet biogenesis and iPS cell-derived platelets can now be produced on a clinical scale by a device called VerMES, this study examined the osteogenesis-promoting effect and safety of clinical-scale FD-iMP (V-FD-iMPs) for future human clinical application.
View Article and Find Full Text PDFIran J Basic Med Sci
January 2024
Gorgan Congenital Malformations Research Center, Golestan University of Medical Sciences, Gorgan, Iran.
Front Neurol
May 2024
Department of Molecular Medicine, University of Pavia, Pavia, Italy.
Calvarial bone marrow has been found to be central in the brain immune response, being connected to the dura through channels which allow leukocyte trafficking. Temporal bone marrow is thought to play important roles in relation to the inner ear, but is still largely uncharacterized, given this bone complex anatomy. We characterized the geometry and connectivity of rat temporal bone marrow using lightsheet imaging of cleared samples and microCT.
View Article and Find Full Text PDFBlood Cells Mol Dis
July 2024
Key Laboratory of Traditional Chinese Medicine Etiology and Pathogenesis in Jiangxi Province, Center for Differentiation and Development of Traditional Chinese Medicine Basic Theory, School of Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang 330004, China. Electronic address:
Immune thrombocytopenia (ITP) is an autoimmune disease caused by the loss of immune tolerance to platelet autoantigens, resulting in reduced platelet production and increased platelet destruction. Impaired megakaryocyte differentiation and maturation is a key factor in the pathogenesis and treatment of ITP. Sarcandra glabra, a plant of the Chloranthaceae family, is commonly used in clinical practice to treat ITP, and daucosterol (Dau) is one of its active ingredients.
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