@article{SeefriedDahirPetryketal.2020,
  author    = {Seefried, Lothar and Dahir, Kathryn and Petryk, Anna and H{\"o}gler, Wolfgang and Linglart, Agn{\`e}s and Martos-Moreno, Gabriel {\´A}ngel and Ozono, Keiichi and Fang, Shona and Rockman-Greenberg, Cheryl and Kishnani, Priya S},
  title     = {Burden of Illness in Adults With Hypophosphatasia: Data From the Global Hypophosphatasia Patient Registry},
  series = {Journal of Bone and Mineral Research},
  volume    = {35},
  journal   = {Journal of Bone and Mineral Research},
  number    = {11},
  doi       = {10.1002/jbmr.4130},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-217787},
  pages     = {2171 -- 2178},
  year      = {2020},
  abstract  = {Hypophosphatasia (HPP) is a rare, inherited, metabolic disease caused by deficient tissue non-specific alkaline phosphatase activity. This study aims to assess patient-reported pain, disability and health-related quality of life (HRQoL) in a real-world cohort of adults with HPP who were not receiving asfotase alfa during the analysis. Adults (≥18 years old) with HPP (confirmed by ALPL gene mutation and/or low serum alkaline phosphatase activity for age/sex) were identified from the Global HPP Registry (NCT02306720). Demographics, clinical characteristics, and data on patient-reported pain, disability, and HRQoL (assessed by Brief Pain Inventory Short Form [BPI-SF], Health Assessment Questionnaire Disability Index [HAQ-DI], and 36-Item Short-Form Health Survey version 2 [SF-36v2], respectively) were stratified by pediatric- and adult-onset HPP and summarized descriptively. Of the 304 adults included (median [min, max] age 48.6 [18.8, 79.8] years; 74\% women), 45\% had adult-onset HPP and 33\% had pediatric-onset HPP (unknown age of onset, 22\%). Of those with data, 38\% had experienced ≥5 HPP manifestations and 62\% had a history of ≥1 fracture/pseudofracture. Median (Q1, Q3) BPI-SF scores were 3.5 (1.5, 5.3) for pain severity and 3.3 (0.9, 6.2) for pain interference. Median (Q1, Q3) disability on the HAQ-DI was 0.3 (0.0, 0.7). Median (Q1, Q3) physical and mental component summary scores on the SF-36v2 were 42.4 (32.7, 49.9) and 45.3 (36.3, 54.8), respectively. Greater numbers of HPP manifestations experienced/body systems affected correlated significantly with poorer scores on the BPI-SF, HAQ-DI, and SF-36v2 (all p < 0.05). No significant differences between adults with pediatric- and adult-onset HPP were observed for patient-reported outcomes, except for disability and the BPI-SF question "pain at its worst," which were significantly higher among adults with pediatric- versus adult-onset HPP (p = 0.03 and 0.04, respectively). These data from the Global HPP Registry show that adults with HPP have a substantial burden of illness that is associated with reduced patient-reported HRQoL, regardless of age of disease onset.},
  language  = {en}
}
@article{SeefriedMuellerDeubertSchwarzetal.2010,
  author    = {Seefried, Lothar and Mueller-Deubert, Sigrid and Schwarz, Thomas and Lind, Thomas and Mentrup, Birgit and Kober, Melanie and Docheva, Denitsa and Liedert, Astrid and Kassem, Moustapha and Ignatius, Anita and Schieker, Matthias and Claes, Lutz and Wilke, Winfried and Jakob, Franz and Ebert, Regina},
  title     = {A small scale cell culture system to analyze mechanobiology using reporter gene constructs and polyurethane dishes},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-68099},
  year      = {2010},
  abstract  = {Mechanical forces are translated into biochemical signals and contribute to cell differentiation and phenotype maintenance. Mesenchymal stem cells and their tissuespecific offspring, as osteoblasts and chondrocytes, cells of cardiovascular tissues and lung cells are sensitive to mechanical loading but molecules and mechanisms involved have to be unraveled. It is well established that cellular mechanotransduction is mediated e.g. by activation of the transcription factor SP1 and by kinase signaling cascades resulting in the activation of the AP1 complex. To investigate cellular mechanisms involved in mechanotransduction and to analyze substances, which modulate cellular mechanosensitivity reporter gene constructs, which can be transfected into cells of interest might be helpful. Suitable small-scale bioreactor systems and mechanosensitive reporter gene constructs are lacking. To analyze the molecular mechanisms of mechanotransduction and its crosstalk with biochemically induced signal transduction, AP1 and SP1 luciferase reporter gene constructs were cloned and transfected into various cell lines and primary cells. A newly developed bioreactor and small-scale 24-well polyurethane dishes were used to apply cyclic stretching to the transfected cells. 1 Hz cyclic stretching for 30 min in this system resulted in a significant stimulation of AP1 and SP1 mediated luciferase activity compared to unstimulated cells. In summary we describe a small-scale cell culture/bioreactor system capable of analyzing subcellular crosstalk mechanisms in mechanotransduction, mechanosensitivity of primary cells and of screening the activity of putative mechanosensitizers as new targets, e.g. for the treatment of bone loss caused by both disuse and signal transduction related alterations of mechanotransduction.},
  subject      = {Bioreaktor},
  language  = {en}
}