0000000000726445

AUTHOR

Stefan Teufel

showing 2 related works from this author

Wnt1 is an Lrp5-independent bone-anabolic Wnt ligand.

2018

Wnt signaling is important for proper embryonic development, shaping cell fate and migration, stem cell renewal, and organ and tissue formation. Here, Luther et al. investigated the role of Wnt1 in osteoporosis. Patients with early-onset osteoporosis and with WNT1 mutations had low bone turnover and high fracture rates, and loss of Wnt1 activity caused fracture and osteoporosis in mice. Inducing Wnt1 in bone-forming cells increased bone mass in aged mice, and this process did not require Lrp5, a co-receptor involved in Wnt signaling. This study identifies Wnt1 as an anabolic (bone building) factor and suggests that it might be a therapeutic target for osteoporosis.WNT1 mutations in humans a…

0301 basic medicinemedicine.medical_specialtyAginganimal structuresAnabolismCellular differentiationOsteoporosis030209 endocrinology & metabolismMice TransgenicWnt1 ProteinLigandsBone and BonesBone remodeling03 medical and health sciencesFractures Bone0302 clinical medicineAnabolic AgentsOsteogenesisInternal medicineCortical BoneMedicineAnimalsHumansTransgenesOsteoblastsbusiness.industryIncidenceWnt signaling pathwayLRP5OsteoblastCell DifferentiationGeneral MedicineOrgan Sizemedicine.disease030104 developmental biologyEndocrinologymedicine.anatomical_structureLow Density Lipoprotein Receptor-Related Protein-5Osteogenesis imperfectaembryonic structuresMutationBone RemodelingbusinessScience translational medicine
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Quantum waveguides with magnetic fields

2019

International audience; We study generalised quantum waveguides in the presence of moderate and strong external magnetic fields. Applying recent results on the adiabatic limit of the connection Laplacian we show how to construct and compute effective Hamiltonians that allow, in particular, for a detailed spectral analysis of magnetic waveguide Hamiltonians. We apply our general construction to a number of explicit examples, most of which are not covered by previous results.

Physics010102 general mathematicsFOS: Physical sciencesStatistical and Nonlinear PhysicsMathematical Physics (math-ph)01 natural sciencesConnection (mathematics)Magnetic field81Q37 58J90[MATH.MATH-MP]Mathematics [math]/Mathematical Physics [math-ph]Quantum mechanics0103 physical sciences010307 mathematical physicsLimit (mathematics)0101 mathematicsAdiabatic processLaplace operatorQuantumMathematical Physics
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