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https://www.readbyqxmd.com/read/29348917/refractory-actinomycosis-of-the-humerus
#1
Mariano O Abrego, Franco L De Cicco, Noelia B Montenegro, Jorge G Boretto, Pablo De Carli, Gerardo L Gallucci
Actinomycosis is a chronic, opportunistic infection caused by Actinomyces species, such as Actinomyces bacillus. Actinomycosis in long bones is very rare. To the best of our knowledge, isolated primary actinomycosis of the humerus is rarely reported in literature. We present a rare case of a refractory primary actinomycosis of the humerus. A 66-year-old man with no history of concomitant conditions was admitted to our hospital with a history of a tumour on the distal third of the left arm as a result of a closed trauma without fracture 20 years before...
2018: SAGE Open Medical Case Reports
https://www.readbyqxmd.com/read/29346353/the-burden-of-cancer-in-25-29-year-olds-in-new-zealand-a-case-for-a-wider-adolescent-and-young-adult-age-range
#2
Kirsten R Ballantine, Victoria Utley, Heidi Watson, Michael J Sullivan, Ruth Spearing
AIMS: New Zealand currently defines the adolescent and young adult (AYA) group for cancer services as young people 12-24 years of age, while other countries favour a designation of 15-29 years. This study was undertaken to compare cancer incidence and survival among 25-29 year olds to New Zealand's younger AYA population and to assess survival for our 15-29 year population against international benchmarks. METHODS: Diagnostic and demographic information for cancer registrations between 2000 and 2009 for 25-29 year olds was obtained from the New Zealand Cancer Registry...
January 19, 2018: New Zealand Medical Journal
https://www.readbyqxmd.com/read/29340594/keratan-sulphate-a-complex-glycosaminoglycan-with-unique-functional-capability
#3
Bruce Caterson, James Melrose
From an evolutionary perspective keratan sulphate (KS) is the newest glycosaminoglycan (GAG) but the least understood. KS is a sophisticated molecule with a diverse structure, and unique functional roles continue to be uncovered for this GAG. The cornea is the richest tissue source of KS in the human body but the central and peripheral nervous systems also contain significant levels of KS and a diverse range of KS-proteoglycans with essential functional roles. KS also displays important cell regulatory properties in epithelial and mesenchymal tissues and in bone and in tumour development of diagnostic and prognostic utility...
January 11, 2018: Glycobiology
https://www.readbyqxmd.com/read/29340063/a-molecular-signature-of-dormancy-in-cd34-cd38-acute-myeloid-leukaemia-cells
#4
Mazin Gh Al-Asadi, Grace Brindle, Marcos Castellanos, Sean T May, Ken I Mills, Nigel H Russell, Claire H Seedhouse, Monica Pallis
Dormant leukaemia initiating cells in the bone marrow niche are a crucial therapeutic target for total eradication of acute myeloid leukaemia. To study this cellular subset we created and validated an in vitro model employing the cell line TF-1a, treated with Transforming Growth Factor β1 (TGFβ1) and a mammalian target of rapamycin inhibitor. The treated cells showed decreases in total RNA, Ki-67 and CD71, increased aldehyde dehydrogenase activity, forkhead box 03A (FOX03A) nuclear translocation and growth inhibition, with no evidence of apoptosis or differentiation...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29336169/bone-metastasis-target-redox-responsive-micell-for-the-treatment-of-lung-cancer-bone-metastasis-and-anti-bone-resorption
#5
Wei-Liang Ye, Yi-Pu Zhao, Ying Cheng, Dao-Zhou Liu, Han Cui, Miao Liu, Bang-Le Zhang, Qi-Bing Mei, Si-Yuan Zhou
In order to inhibit the growth of lung cancer bone metastasis and reduce the bone resorption at bone metastasis sites, a bone metastasis target micelle DOX@DBMs-ALN was prepared. The size and the zeta potential of DOX@DBNs-ALN were about 60 nm and -15 mV, respectively. DOX@DBMs-ALN exhibited high binding affinity with hydroxyapatite and released DOX in redox-responsive manner. DOX@DBMs-ALN was effectively up taken by A549 cells and delivered DOX to the nucleus of A549 cells, which resulted in strong cytotoxicity on A549 cells...
January 16, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29334767/a-novel-adaptive-algorithm-for-3d-finite-element-analysis-to-model-extracortical-bone-growth
#6
Vee San Cheong, Gordon W Blunn, Melanie J Coathup, Paul Fromme
Extracortical bone growth with osseointegration of bone onto the shaft of massive bone tumour implants is an important clinical outcome for long-term implant survival. A new computational algorithm combining geometrical shape changes and bone adaptation in 3D Finite Element simulations has been developed, using a soft tissue envelope mesh, a novel concept of osteoconnectivity, and bone remodelling theory. The effects of varying the initial tissue density, spatial influence function and time step were investigated...
January 16, 2018: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/29331524/strategies-and-technical-challenges-for-imaging-oligometastatic-disease-recommendations-from-the-european-organisation-for-research-and-treatment-of-cancer-imaging-group
#7
REVIEW
Nandita M deSouza, Yan Liu, Arturo Chiti, Daniela Oprea-Lager, Géraldine Gebhart, Bernard E Van Beers, Ken Herrmann, Frederic E Lecouvet
Patients with oligometastatic disease (OMD) often have controllable symptoms, and cures are possible. Technical improvements in surgery and radiotherapy have introduced the option of metastasis-directed ablative therapies as an adjunct or alternative to standard-of-care systemic therapies. Several clinical trials and registries are investigating the benefit of these therapeutic approaches across several cancer sites. This requires that patients are correctly included and followed with appropriate imaging. This article discusses the evidence and offers recommendations for the implementation of standard-of-care (Response Evaluation Criteria in Solid Tumours measurements on computed tomography [CT], magnetic resonance imaging [MRI] and bone scintigraphy) and advanced imaging modalities (functional, metabolic and radionuclide targeted) for identifying and following up patients with OMD...
January 10, 2018: European Journal of Cancer
https://www.readbyqxmd.com/read/29330865/a-case-of-radiation-induced-osteosarcoma-of-the-skull-presenting-as-a-cutaneous-epidermotropic-tumour-with-a-short-latent-period
#8
E Rashidghamat, E Calonje
Radiation induced sarcoma is an unusual but well documented tumor. The frequency of radiation induced sarcoma of the head and neck region has been reported as 0.143%. In the literature the median interval between irradiation and development of sarcoma is 11 years. Cases of RIS with a short latent period i.e. less than four years are rare. We report a case of a 34 year-old female who developed an osteosarcoma of the scalp, over a previous craniotomy scar, three years after excision of a frontal anaplastic oligodendroglioma which had been followed by a course of 6 weeks radiotherapy (58 Gy) and 6 cycles of Temozolomide...
January 13, 2018: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/29329488/genetic-and-molecular-insights-into-genotype-phenotype-relationships-in-osteopathia-striata-with-cranial-sclerosis-oscs-through-the-analysis-of-novel-mouse-wtx-mutant-alleles
#9
Glenda Comai, Agnès Boutet, Kristina Tanneberger, Filippo Massa, Ana-Sofia Rocha, Aurelie Charlet, Clara Panzolini, Fariba Jian Motamedi, Robert Brommage, Wolfgang Hans, Thomas Funck-Brentano, Martin Hrabe de Angelis, Christine Hartmann, Martine Cohen-Solal, Jürgen Behrens, Andreas Schedl
The X-linked WTX/AMER1 protein forms an important component of the β-catenin destruction complex that can both enhance and suppress canonical β-catenin signalling. Somatic mutations in WTX/AMER1 have been found in a proportion of the pediatric kidney cancer Wilms' tumour. By contrast, germline mutations cause the severe sclerosing bone dysplasia osteopathia striata congenita with cranial sclerosis (OSCS), a condition usually associated with fetal or perinatal lethality in male patients. Here we addressed the developmental and molecular function of WTX by generating two novel mouse alleles...
January 12, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29329443/bone-formation-in-ankylosing-spondylitis-during-anti-tumour-necrosis-factor-therapy-imaged-by-18f-fluoride-positron-emission-tomography
#10
Stefan T G Bruijnen, Nicki J F Verweij, Leonie M van Duivenvoorden, Nathalie Bravenboer, Dominique L P Baeten, Christiaan J van Denderen, Irene E van der Horst-Bruinsma, Alexandre E Voskuyl, Martijn Custers, Peter M van de Ven, Joost C J Bot, Bouke J H Boden, Adriaan A Lammertsma, Otto S H Hoekstra, Pieter G H M Raijmakers, Conny J van der Laken
Objectives: Excessive bone formation is an important hallmark of AS. Recently it has been demonstrated that axial bony lesions in AS patients can be visualized using 18F-fluoride PET-CT. The aim of this study was to assess whether 18F-fluoride uptake in clinically active AS patients is related to focal bone formation in spine biopsies and is sensitive to change during anti-TNF treatment. Methods: Twelve anti-TNF-naïve AS patients [female 7/12; age 39 years (SD 11); BASDAI 5...
January 9, 2018: Rheumatology
https://www.readbyqxmd.com/read/29326370/a-rare-case-of-giant-cell-tumour-gct-of-bone-with-lung-metastases
#11
Dheerendra Kumar Sachan, Nupur Bansal, Surabhi Gupta, Sanjeev Kumar
A case of 16-year-old girl with giant cell tumour of right fibula is presented to us with bilateral lung metastases. In view of widespread bilateral lung metastatic lesions, the patient was given multimodality treatment. Chemotherapy followed by radiotherapy to the local site as well as lung bath has been given and has shown good response.
January 11, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29325524/posterior-decompression-and-occipitocervical-fixation-followed-by-intraoperative-vertebroplasty-for-metastatic-involvement-of-the-axis
#12
Xinjie Wu, Mingsheng Tan, Yingna Qi, Ping Yi, Feng Yang, Xiangsheng Tang, Qingying Hao
BACKGROUND: Metastases to the upper cervical spine were rarely reported in the literature. However, metastases to this area may cause spinal instability and cord compression, which in turn can result in respiratory failure and neurological dysfunction. The present study investigated the efficacy and safety of posterior decompression and occipitocervical fixation followed by intraoperative vertebroplasty for this disease. METHODS: This was a retrospective study that included 10 patients with metastatic involvement of the axis from March 2002 to May 2014...
January 11, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29323709/osteosarcoma-derived-extracellular-vesicles-induce-a-tumour-like-phenotype-in-normal-recipient-cells
#13
Enrica Urciuoli, Ezio Giorda, Marco Scarsella, Stefania Petrini, Barbara Peruzzi
Osteosarcoma is the most common primary bone cancer and the most frequent cause of bone cancer-related deaths in children and adolescents. Osteosarcoma cells are able to establish a crosstalk with resident bone cells leading to the formation of a deleterious vicious cycle. We hypothesized that osteosarcoma cells can release, in the bone microenvironment, transforming Extracellular Vesicles (EVs) involved in regulating bone cell proliferation and differentiation, thereby promoting tumour growth. We assessed EV production by three osteosarcoma cell lines with increasing aggressiveness in order to investigate their roles in the communication between osteosarcoma cells and normal recipient cells...
January 11, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29321928/lung-cancer-development-in-the-patient-with-granulomatosis-with-polyangiitis-during-long-term-treatment-with-cyclophosphamide-first-documented-case
#14
Midori Toriyama, Etsuko Tagaya, Tomoko Yamamoto, Mitsuko Kondo, Yoji Nagashima, Jun Tamaoki
A 65-year-old man was diagnosed with granulomatosis with polyangiitis (GPA) at the age of 47, when cytoplasmic anti-neutrophil cytoplasmic antibody (C-ANCA) serology was positive, and he had multiple nodular shadows in both lungs. He had been treated with prednisolone, cyclophosphamide (CPA) and plasma exchange. At the age of 64, a nodular shadow was newly detected in the right lower lung field and serum tumour marker increased. Subsequent positron emission tomography/computed tomography scan demonstrated accumulations of fluorodexyglucose (FDG) in the same area, mediastinum lymph nodes, thoracic wall, right iliac bone, and right retroperitoneum...
February 2018: Respirology Case Reports
https://www.readbyqxmd.com/read/29315595/mid-to-long-term-clinical-outcome-of-giant-cell-tumor-of-bone-treated-with-calcium-phosphate-cement-following-thorough-curettage-and-phenolization
#15
Akihiko Takeuchi, Prakrit Suwanpramote, Norio Yamamoto, Toshiharu Shirai, Katsuhiro Hayashi, Hiroaki Kimura, Shinji Miwa, Takashi Higuchi, Kensaku Abe, Hiroyuki Tsuchiya
BACKGROUND AND OBJECTIVES: Giant cell tumors of bone (GCTB) are intermediate and locally aggressive bone tumor. Calcium phosphate cement (CPC) is a bone void filler used in orthopaedic surgery. This study investigated the clinical outcome of GCTB treated with thorough curettage, phenolization, and CPC. METHODS: We investigated 26 patients with at least 36 months of follow-up. The mean age and follow-up were 37 years (range: 19-63) and 87 months (range: 38-169), respectively...
January 8, 2018: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29311633/traf2-in-osteotropic-breast-cancer-cells-enhances-skeletal-tumour-growth-and-promotes-osteolysis
#16
Prabha Peramuhendige, Silvia Marino, Ryan T Bishop, Daniëlle de Ridder, Asim Khogeer, Isabella Baldini, Mattia Capulli, Nadia Rucci, Aymen I Idris
NFκB plays an important role in inflammation and bone remodelling. Tumour necrosis factor receptor associated factor 2 (TRAF2), a key component of NFκB signalling, has been identified as an oncogene, but its role in the regulation of breast cancer osteolytic metastasis remains unknown. Here, we report that stable overexpression of TRAF2 in parental and osteotropic sub-clones of human MDA-MB-231 (MDA-231) breast cancer cells increased cell growth and motility in vitro, whereas TRAF2 knockdown was inhibitory...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29310810/radiological-features-and-metastatic-patterns-of-thymic-neuroendocrine-tumours
#17
T Araki, L M Sholl, H Hatabu, M Nishino
AIM: To investigate the clinical and image features of thymic neuroendocrine tumours (NETs), and characterise the radiological patterns of recurrence and metastasis on serial imaging studies. MATERIALS AND METHODS: The study included 14 patients (11 males) with a histopathological diagnosis of thymic NETs (one typical carcinoid, eight atypical carcinoid, and five large cell neuroendocrine carcinoma). Preoperative images were assessed for features of primary tumours...
January 5, 2018: Clinical Radiology
https://www.readbyqxmd.com/read/29305458/hemiarthroplasty-proximal-femoral-endoprostheses-following-tumour-reconstruction-is-acetabular-replacement-necessary
#18
J D Stevenson, V S Kumar, G L Cribb, P Cool
AIMS: Dislocation rates are reportedly lower in patients requiring proximal femoral hemiarthroplasty than for patients undergoing hip arthroplasty for neoplasia. Without acetabular replacement, pain due to acetabular wear necessitating revision surgery has been described. We aimed to determine whether wear of the native acetabulum following hemiarthroplasty necessitates revision surgery with secondary replacement of the acetabulum after proximal femoral replacement (PFR) for tumour reconstruction...
January 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29302798/cone-beam-ct-of-the-musculoskeletal-system-clinical-applications
#19
REVIEW
Magdalena Posadzy, Julie Desimpel, Filip Vanhoenacker
OBJECTIVES: The aim of this pictorial review is to illustrate the use of CBCT in a broad spectrum of musculoskeletal disorders and to compare its diagnostic merit with other imaging modalities, such as conventional radiography (CR), Multidetector Computed Tomography (MDCT) and Magnetic Resonance Imaging. BACKGROUND: Cone Beam Computed Tomography (CBCT) has been widely used for dental imaging for over two decades. DISCUSSION: Current CBCT equipment allows use for imaging of various musculoskeletal applications...
January 4, 2018: Insights Into Imaging
https://www.readbyqxmd.com/read/29300334/understanding-the-progression-of-bone-metastases-to-identify-novel-therapeutic-targets
#20
REVIEW
Annie Schmid-Alliana, Heidy Schmid-Antomarchi, Rasha Al-Sahlanee, Patricia Lagadec, Jean-Claude Scimeca, Elise Verron
Bone is one of the most preferential target site for cancer metastases, particularly for prostate, breast, kidney, lung and thyroid primary tumours. Indeed, numerous chemical signals and growth factors produced by the bone microenvironment constitute factors promoting cancer cell invasion and aggression. After reviewing the different theories proposed to provide mechanism for metastatic progression, we report on the gene expression profile of bone-seeking cancer cells. We also discuss the cross-talk between the bone microenvironment and invading cells, which impacts on the tumour actions on surrounding bone tissue...
January 4, 2018: International Journal of Molecular Sciences
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