980 resultados para Adams, Elizabeth (Ripley), Mrs., 1776-1829.
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This portrait shows Elizabeth with pig tails. In a defiant mood, she cut them off.
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Front row from left to right: Walter, Ursula, and Freddy; back row from left to right: Hal, Elizabeth, and Kurt Godshaw; picture was probably taken in their backyard on Seelhorststrasse in Hannover, Germany
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Front row from left to right: Walter, Ursula, and Freddy; back row from left to right: Hal, Elizabeth, and Kurt Godshaw; picture was probably taken in their backyard on Seelhorststrasse in Hannover, Germany
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Kids from left to right: Hans Ludwig, Elizabeth, Kurt Gottschalk
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Elizabeth Gottschalk is probably the student far left on the horse wagon
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Front row Walter (left) and Freddy; middle row Kurt (left) and Hal; back row Ursula (left) and Elizabeth
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From left to right: Kurt, Walter, Elizabeth, Freddy, Ursula and Hal Gottschalk
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From left to right: Therese Gottschalk nee Molling, Elizabeth Gottschalk, Henny Molling
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Total hip replacement is the golden standard treatment for severe osteoarthritis refractory for conservative treatment. Aseptic loosening and osteolysis are the major long-term complications after total hip replacement. Foreign body giant cells and osteoclasts are locally formed around aseptically loosening implants from precursor cells by cell fusion. When the foreign body response is fully developed, it mediates inflammatory and destructive host responses, such as collagen degradation. In the present study, it was hypothesized that the wear debris and foreign body inflammation are the forces driving local osteoclast formation, peri-implant bone resorption and enhanced tissue remodeling. Therefore the object was to characterize the eventual expression and the role of fusion molecules, ADAMs (an abbreviation for A Disintegrin And Metalloproteinase, ADAM9 and ADAM12) in the fusion of progenitor cells into multinuclear giant cells. For generation of such cells, activated macrophages trying to respond to foreign debris play an important role. Matured osteoclasts together with activated macrophages mediate bone destruction by secreting protons and proteinases, including matrix metalloproteinases (MMPs) and cathepsin K. Thus this study also assessed collagen degradation and its relationship to some of the key collagenolytic proteinases in the aggressive synovial membrane-like interface tissue around aseptically loosened hip replacement implants. ADAMs were found in the interface tissues of revision total hip replacement patients. Increased expression of ADAMs at both transcriptional and translational levels was found in synovial membrane-like interface tissue of revision total hip replacement (THR) samples compared with that in primary THR samples. These studies also demonstrate that multinucleate cell formation from monocytes by stimulation with macrophage-colony stimiulating factor (M-CSF) and receptor activator of nuclear factor kappa B ligand (RANKL) is characterized by time dependent changes of the proportion of ADAMs positive cells. This was observed both in the interface membrane in patients and in two different in vitro models. In addition to an already established MCS-F and RANKL driven model, a new virally (parainfluenza 2) driven model (of human salivary adenocarcinoma (HSY) cells or green monkey kidney (GMK) cells) was developed to study various fusion molecules and their role in cell fusion in general. In interface membranes, collagen was highly degraded and collagen degradation significantly correlated with the number of local cells containing collagenolytic enzymes, particularly cathepsin K. As a conclusion, fusion molecules ADAM9 and ADAM12 seem to be dynamically involved in cell-cell fusion processes and multinucleate cell formation. The highly significant correlation between collagen degradation and collagenolytic enzymes, particularly cathepsin K, indicates that the local acidity of the interface membrane in the pathologic bone and soft tissue destruction. This study provides profound knowledge about cell fusion and mechanism responsible for aseptic loosening as well as increases knowledge helpful for prevention and treatment.
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This picture was taken during her last year of high school. The chemistry teacher, Professor Schmigielski was one of Elizabeth's favorite teachers.
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This picture was taken during her last year of high school. The chemistry teacher, Professor Schmigielski was one of Elizabeth's favorite teachers.