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https://www.readbyqxmd.com/read/29236352/iccs-escca-consensus-guidelines-for-the-clinical-utility-of-testing-for-gpi-anchor-deficient-clones-in-paroxysmal-nocturnal-hemoglobinuria-pnh-and-other-bone-marrow-disorders-part-1
#1
Amy E Dezern, Michael J Borowitz
Paroxysmal nocturnal hemoglobinuria (PNH) arises as a consequence of the non-malignant clonal expansion of one or more hematopoietic stem cells with an acquired somatic mutation of the PIGA gene.(1) Progeny of affected stem cells are deficient in glycosyl phosphatidylinositol-anchored proteins (GPI-APs). This deficiency is readily detected by flow cytometry. Though this seems straightforward, the clinical utility of this testing requires that the ordering clinician understand not only the characteristics of the test, but also the biology of the underlying disease, and the clinical and laboratory manifestations in the individual patient...
December 13, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/29236321/murine-models-of-osteosarcoma-a-piece-of-the-translational-puzzle
#2
Mannu K Walia, Wilson Castillo-Tandazo, Anthony J Mutsaers, T John Martin, Carl R Walkley
Osteosarcoma (OS) is the most common cancer of bone in children and young adults. Despite extensive research efforts, there has been no significant improvement in patient outcome for many years. An improved understanding of the biology of this cancer and how genes frequently mutated contribute to OS may help improve outcomes for patients. Whilst our knowledge of the mutational burden of OS is approaching saturation, our understanding of how these mutations contribute to OS initiation and maintenance is less clear...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29236320/analgesic-effects-of-microrna-129-5p-against-bone-cancer-pain-through-the-ephb1-ephrinb2-signaling-pathway-in-mice
#3
Shao-Nan Yu, Gui-Feng Liu, Long-Yun Li, Guo-Qing Zhao, Lin Liu, Xue-Feng Li
The study aims to investigate the analgesic effects of microRNA-129-5p (miR-129-5p) on bone cancer pain (BCP) by targeting Eph receptor B1 (EphB1) through the EphB1/EphrinB2 signaling pathway. BCP mice models were established, and C3H/HeJ female mice were classified into the normal, blank, negative control (NC), miR-129-5p mimics, miR-129-5p inhibitors, EphB1 knockout (KO), and miR-129-5p inhibitors + EphB1 KO groups. RT-qPCR and western blotting were used to evaluate miR-129-5p expression, and mRNA and protein expressions of EphB1, p-EphB1, EphrinB2 and p-EphrinB2...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29236316/2-5-hexanedione-induces-bone-marrow-mesenchymal-stem-cell-apoptosis-via-inhibition-of-akt-bad-signal-pathway
#4
Jinsong Sun, Xiaoxia Shi, Shuangyue Li, Fengyuan Piao
2,5-Hexanedione (HD) is an important bioactive metabolite of n-hexane and mediates the neurotoxicity of parent compound. Studies show that HD induces apoptotic death of neural progenitor cells. However, its underlying mechanism remains unknown. Mesenchymal stem cells (MSCs) are multipotential stem cells with the ability to differentiate into various cell types and have been used as cell model for studying the toxic effects of chemicals on stem cells. In this study, we exposed rat bone marrow MSCs to 0, 10, 20, and 40 mM HD in vitro...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29236309/leptin-induces-mmp1-13-and-adamts-4-expressions-through-bone-morphogenetic-protein-2-autocrine-effect-in-human-chondrocytes
#5
Yu-Ping Su, Cheng-Nan Chen, Kuo-Chin Huang, Hsin-I Chang, Ko-Chao Lee, Chun-Min Lo, Shun-Fu Chang
The induction of bone morphogenetic protein (BMP) 2 in injured and arthritis articular cartilage has been proposed, but the precise mechanism has not been clearly clarified. Our previous study has found that leptin could stimulate the BMP2 autocrine effect to increase the anabolic collagen II expression when it initiates the catabolic response in human chondrocytes. It has been suggested that this BMP2 autocrine effect contributes to a reparative role in leptin-stimulated human chondrocytes. In this study, we further determined whether this BMP2 autocrine effect also affect the expressions of catabolic matrix metalloproteinases (MMPs) and a disintegrin and metalloproteinase with thrombospondin motif (ADAMTS)...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29236264/skin-necrosis-in-a-magnet-based-bone-conduction-implant
#6
Sara Gallant, Judy Lee, Daniel Jethanamest
No abstract text is available yet for this article.
December 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/29236176/na18f-accumulates-on-the-compressive-side-of-peri-implant-bone-under-immediate-loading
#7
Miou Yamamoto, Toru Ogawa, Masayoshi Yokoyama, Yoshihito Funaki, Kenta Shobara, Aya Shibamoto, Juan Ramón Vanegas Sáenz, Keiichi Sasaki
This study aimed to examine the dynamic change in bone metabolism by immediate loading in several sites around implants using high-resolution Na18F-PET scan. Two titanium implants (Ø 1.2 mm) were inserted parallel to each other in the right tibiae of Wistar rats (n = 4). The left tibia was set as control side. One day after insertion, closed coil springs of 4.0 N were attached to the expose superior portions of the implants to apply a continuous mechanical stress. The rats with fluorine-18 (18F) ion (5 mCi/rat) intravenously injected were scanned by PET scanner at 4, 7, 14, 28 days after load application...
December 13, 2017: Odontology
https://www.readbyqxmd.com/read/29236162/bisphosphonates-prevent-age-related-weight-loss-in-japanese-postmenopausal-women
#8
Tomohiko Urano, Masataka Shiraki, Tatsuhiko Kuroda, Shiro Tanaka, Fumihiko Urano, Kazuhiro Uenishi, Satoshi Inoue
Decline of body weight with aging is a major risk factor for frailty, osteoporosis and fracture, suggesting that treatment for osteoporosis may affect body composition. Recently, we have shown that 5-year treatment with raloxifene prevented age-related weight loss, suggesting some other drugs for osteoporosis may also prevent a decrease in body weight with aging. The present study aimed to identify the relationship between bisphosphonate treatment and body composition markers. We measured bone mineral density (BMD), body composition, and bone remodeling markers in 551 Japanese postmenopausal women with bisphosphonate treatment, which included risedronate or alendronate treatment (BP-treatment group; N = 193) and without treatment by any osteoporosis drug (no-treatment group; N = 358) for 4-7 years (mean observation periods; 5...
December 13, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/29236161/genetic-analysis-of-adults-heterozygous-for-alpl-mutations
#9
Agnès Taillandier, Christelle Domingues, Annika Dufour, Françoise Debiais, Pascal Guggenbuhl, Christian Roux, Catherine Cormier, Bernard Cortet, Valérie Porquet-Bordes, Fabienne Coury, David Geneviève, Jean Chiesa, Thierry Colin, Elaine Fletcher, Agnès Guichet, Rose-Marie Javier, Michel Laroche, Michael Laurent, Ekkehart Lausch, Bruno LeHeup, Cédric Lukas, Georg Schwabe, Ineke van der Burgt, Christine Muti, Brigitte Simon-Bouy, Etienne Mornet
Hypophosphatasia (HPP) is a rare inherited metabolic bone disease due to a deficiency of the tissue nonspecific alkaline phosphatase isoenzyme (TNSALP) encoded by the ALPL gene. Patients have consistently low serum alkaline phosphatase (AP), so that this parameter is a good hallmark of the disease. Adult HPP is heterogeneous, and some patients present only mild nonpathognomonic symptoms which are also common in the general population such as joint pain, osteomalacia and osteopenia, chondrocalcinosis, arthropathy and musculoskeletal pain...
December 13, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/29236139/-notochordal-tumors-benign-notochordal-tumors-and-chordomas
#10
REVIEW
T F E Barth, A von Witzleben, P Möller, S Scheil-Bertram
Benign notochordal tumors (BNCT) and chordomas are primary bone tumors of the spine with a predominant localization in the sacrum and clival region followed by the vertebral bodies. Besides the most common variant (NOS [not otherwise specified] with hepatoid or renal carcinoma cell-like differentiation) chordomas with chondroid, and polymorphic to anaplastic morphology are described. An unfavorable variant are pediatric chordomas with a loss of INI-1. BNCT and chordomas are characterized by the following immunohistological profile: vimentin+, cytokeratin+/-, epithelial membrane antigen (EMA)+/-, S100 protein+/-, brachyury+...
December 13, 2017: Der Pathologe
https://www.readbyqxmd.com/read/29236126/-structural-damage-after-shoulder-dislocation-and-development-of-surgical-treatment-from-a-historical-perspective
#11
REVIEW
P Habermeyer, P Magosch
In the nineteenth century there was a high incidence of habitual shoulder instability caused by epileptic seizures and accompanied by therapeutic dilettantism, which led to socioeconomic problems in the working population. In the preradiography era the pathomechanism of shoulder dislocation was only known on the basis of cadaver studies and autopsy findings. The underlying structural disorders of habitual shoulder instability in the Bismarck era were published by Malgaigne, Broca and Hartmann. In1898 the first surgical reconstructive stabilization procedure for habitual shoulder dislocation was performed by Wilhelm Müller in Rostock...
December 13, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29236063/recent-advances-in-the-role-of-slc39a-zip-zinc-transporters-in-vivo
#12
REVIEW
Teruhisa Takagishi, Takafumi Hara, Toshiyuki Fukada
Zinc (Zn), which is an essential trace element, is involved in numerous mammalian physiological events; therefore, either a deficiency or excess of Zn impairs cellular machineries and influences physiological events, such as systemic growth, bone homeostasis, skin formation, immune responses, endocrine function, and neuronal function. Zn transporters are thought to mainly contribute to Zn homeostasis within cells and in the whole body. Recent genetic, cellular, and molecular studies of Zn transporters highlight the dynamic role of Zn as a signaling mediator linking several cellular events and signaling pathways...
December 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29236060/the-use-of-poly-d-l-lactic-acid-pdlla-devices-for-bone-augmentation-techniques-a-systematic-review
#13
REVIEW
Marco Annunziata, Livia Nastri, Gennaro Cecoro, Luigi Guida
Poly-d,l-lactic acid (PDLLA) has been proposed in dentistry for regenerative procedures in the form of membranes, screws, and pins. The aim of this review was to evaluate the efficacy of bone augmentation techniques using PDLLA devices. A literature search was carried out by two independent and calibrated reviewers. All interventional and observational studies assessing the efficacy of bone augmentation techniques using PDLLA devices were included. Six studies were included. The relevant variability of design and methods impeded any qualitative or quantitative comparison...
December 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29236047/hasc-and-dfat-multipotent-stem-cells-for-regenerative-medicine-a-comparison-of-their-potential-differentiation-in-vitro
#14
Marco Saler, Laura Caliogna, Laura Botta, Francesco Benazzo, Federica Riva, Giulia Gastaldi
Adipose tissue comprises both adipose and non-adipose cells such as mesenchymal stem cells. These cells show a surface antigenic profile similar to that of bone-marrow-derived MSC. The cells derived from the dedifferentiation of mature adipocytes (DFAT) are another cell population with characteristics of stemness. The aim of this study is to provide evidence of the stemness, proliferation, and differentiation of human adipose stem cells (hASC) and DFAT obtained from human subcutaneous AT and evaluate their potential use in regenerative medicine...
December 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29236045/clodronate-as-a-therapeutic-strategy-against-osteoarthritis
#15
Maria Teresa Valenti, Monica Mottes, Alessandro Biotti, Massimiliano Perduca, Arianna Pisani, Michele Bovi, Michela Deiana, Samuele Cheri, Luca Dalle Carbonare
Osteoarthritis (OA), the most prevalent musculoskeletal pathology, is mainly characterized by the progressive degradation of articular cartilage due to an imbalance between anabolic and catabolic processes. Consequently, OA has been associated with defects in the chondrocitic differentiation of progenitor stem cells (PSCs). In addition, SOX9 is the transcription factor responsible for PSCs chondrogenic commitment. To evaluate the effects of the non-amino bisphosphonate clodronate in OA patients we investigated SOX9 gene expression in circulating progenitor cells (CPCs) and in an in vitro OA model...
December 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29236029/fracture-assessment-of-peek-under-static-loading-by-means-of-the-local-strain-energy-density
#16
Mirco Peron, Seyed Mohammad Javad Razavi, Jan Torgersen, Filippo Berto
Polyetheretherketone (PEEK) has gained interest in many industrial applications due to its high strength-to-weight ratio, excellent heat tolerance and high corrosion resistance. Stress concentrators such as notches and geometrical discontinuities are present in many such components necessitating the reliable assessment of notch sensitivity of PEEK in monotonic tension. Here we evaluate the applicability of the strain energy density (SED) approach for the assessment of the fracture strength of experimentally tested notched geometries subject to corrosion...
December 13, 2017: Materials
https://www.readbyqxmd.com/read/29235968/mycobacterial-blood-culture-as-the-only-means-of-diagnosis-of-disseminated-tuberculosis-in-advanced-hiv-infection
#17
Alice Joan Mathuram, Joy Sarojini Michael, Vijay Prakash Turaka, Sudha Jasmine, Ronald Carey, I Ramya
The diagnosis of disseminated tuberculosis (TB) in advanced HIV infection is often delayed because of difficulty in obtaining suitable specimens for culture. A total of 32 such patients from South India with positive mycobacterial blood cultures were studied over ten years. Almost all (90%) had a febrile illness and the majority (68.7%) had clinical lung involvement, but only 27.3% had positive sputum smears. Liver biopsy yielded a positive diagnosis in only 1/7. Cytopenia was almost universal (96.9%). Bone marrow cultures were, however, positive in 54...
January 1, 2017: Tropical Doctor
https://www.readbyqxmd.com/read/29235701/relation-of-child-caregiver-and-environmental-characteristics-to-childhood-injury-in-an-urban-aboriginal-cohort-in-new-south-wales-australia
#18
Katherine Thurber, Leonie Burgess, Kathleen Falster, Emily Banks, Holger Möller, Rebecca Ivers, Chris Cowell, Vivian Isaac, Deanna Kalucy, Peter Fernando, Cheryl Woodall, Kathleen Clapham
OBJECTIVE: Despite being disproportionately affected by injury, little is known about factors associated with injury in Aboriginal children. We investigated factors associated with injury among urban Aboriginal children attending four Aboriginal Community Controlled Health Services in New South Wales, Australia. METHODS: We examined characteristics of caregiver-reported child injury, and calculated prevalence ratios of 'ever-injury' by child, family, and environmental factors...
December 13, 2017: Australian and New Zealand Journal of Public Health
https://www.readbyqxmd.com/read/29235551/interleukin-1%C3%AE-induces-human-cementoblasts-to-support-osteoclastogenesis
#19
Nam C-N Huynh, Vincent Everts, Prasit Pavasant, Ruchanee S Ampornaramveth
Injury of the periodontium followed by inflammatory response often leads to root resorption. Resorption is accomplished by osteoclasts and their generation may depend on an interaction with the cells in direct contact with the root, the cementoblasts. Our study aimed to investigate the role of human cementoblasts in the formation of osteoclasts and the effect of interleukin (IL)-1β hereupon. Extracted teeth from healthy volunteers were subjected to sequential digestion by type I collagenase and trypsin. The effect of enzymatic digestion on the presence of cells on the root surface was analyzed by histology...
December 13, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/29235542/bone-mineral-density-measurements-in-vertebral-specimens-and-phantoms-using-dual-layer-spectral-computed-tomography
#20
Kai Mei, Benedikt J Schwaiger, Felix K Kopp, Sebastian Ehn, Alexandra S Gersing, Jan S Kirschke, Daniela Muenzel, Alexander A Fingerle, Ernst J Rummeny, Franz Pfeiffer, Thomas Baum, Peter B Noël
To assess whether phantomless calcium-hydroxyapatite (HA) specific bone mineral density (BMD) measurements with dual-layer spectral computed tomography are accurate in phantoms and vertebral specimens. Ex-vivo human vertebrae (n = 13) and a phantom containing different known HA concentrations were placed in a semi-anthropomorphic abdomen phantom with different extension rings simulating different degrees of obesity. Phantomless dual-layer spectral CT was performed at different tube current settings (500, 250, 125 and 50 mAs)...
December 13, 2017: Scientific Reports
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