Unlabelled: Persistent hypoparathyroidism, a condition associated with major inconvenience and potential morbidity, is more difficult to treat than other hypofunctional endocrine disorders. Therapeutic alternative in severe postsurgical hypoparathyroidism is allotransplantation of macroencapsulated parathyroid cells. With this technique, it is possible to implant cells or tissues of parathyroid origin to replace them in such patients without immunosuppression. At the present time, durable results have only been reported in parathyroid allotransplantation when immunosuppression to prevent rejection is administered. We report an allotransplant of parathyroid cells in a patient with continuous endovenous requirement of calcium to survive. Macrocapsule containing ~(20 to 30)x106 parathyroid cells was constructed with a polyvinylidine difluoride and implanted into the deep femoral artery. The functional activity of the graft, traced for 3 months, allowed to exclude the parenteral administration of calcium and to compensate symptoms of the disease.
Similar Cases Published: There have been no more than 3 previous clinical reports of similar parathyroid cell allotransplantation without immunosuppression.
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http://dx.doi.org/10.5144/0256-4947.2016.21.3.1130 | DOI Listing |
Mol Med
January 2025
Department of Nephrology, The Affiliated Hospital of Hebei University, No. 212 Yuhua East Road, Lianchi District, Baoding, 071000, Hebei Province, China.
Background: Uremia (UR) is caused by increased UR-related toxins in the bloodstream. We explored the mechanism of enterogenous toxin methylmalonic acid (MMA) in calcium-phosphorus metabolic disorder in UR rats via the Wnt/β-catenin pathway.
Methods: The UR rat model was established by 5/6 nephrectomy.
Biochem Biophys Res Commun
January 2025
Guangdong Provincial Key Laboratory of Brain Connectome and Behavior, Shenzhen-Hong Kong Institute of Brain Science, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China; CAS Key Laboratory of Brain Connectome and Manipulation, The Brain Cognition and Brain Disease Institute, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China; University of Chinese Academy of Sciences, Beijing, 100049, China. Electronic address:
Parathyroid hormone (PTH) is critical for regulating calcium and phosphate homeostasis, and its dysregulation contributes to osteoporosis. Current methods for precise control of PTH secretion are limited. This study explores chemogenetic tools to regulate PTH secretion in parathyroid chief cells via Gq/Gi signaling.
View Article and Find Full Text PDFAdv Exp Med Biol
January 2025
Institute of Biotechnology, Helsinki Institute of Life Science HiLIFE, University of Helsinki, Helsinki, Finland.
Embryonic mammary gland development unfolds with the specification of bilateral mammary lines, thereafter progressing through placode, bud, and sprout stages before branching morphogenesis. Extensive epithelial-mesenchymal interactions guide morphogenesis from embryogenesis to adulthood. Two distinct mesenchymal tissues are involved, the primary mammary mesenchyme that harbors mammary inductive capacity, and the secondary mesenchyme, the precursor of the adult stroma.
View Article and Find Full Text PDFChem Pharm Bull (Tokyo)
January 2025
Drug Discovery Research Department, Kyoto Pharmaceutical Industries, Ltd.
Osteoporosis is caused by an imbalance between bone resorption and formation, which decreases bone mass and strength and increases the risk of fracture. Therefore, osteoporosis is treated with oral resorption inhibitors, such as bisphosphonates, and parenteral osteogenic drugs, including parathyroid hormone and antisclerostin antibodies. However, orally active osteogenic drugs have not yet been developed.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Departamento de Ciencias Básicas de la Salud, Facultad de Ciencias de la Salud, Universidad Rey Juan Carlos, Avda. de Atenas s/n, 28922 Alcorcón, Madrid, Spain.
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