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https://www.readbyqxmd.com/read/29217849/life-time-dosimetric-assessment-for-mice-and-rats-exposed-in-reverberation-chambers-of-the-2-year-ntp-cancer-bioassay-study-on-cell-phone-radiation
#1
Yijian Gong, Myles Capstick, Sven Kuehn, Perry Wilson, John Ladbury, Galen Koepke, David L McCormick, Ronald L Melnick, Niels Kuster
In this paper, we present the detailed life-time dosimetry analysis for rodents exposed in the reverberation exposure system designed for the two-year cancer bioassay study conducted by the National Toxicology Program of the National Institute of Environmental Health Sciences. The study required the well-controlled and characterized exposure of individually housed, unrestrained mice at 1900 MHz and rats at 900 MHz, frequencies chosen to give best uniformity exposure of organs and tissues. The wbSAR, the peak spatial SAR and the organ specific SAR as well as the uncertainty and variation due to the exposure environment, differences in the growth rates, and animal posture were assessed...
December 2017: IEEE Transactions on Electromagnetic Compatibility
https://www.readbyqxmd.com/read/29217729/bone-marrow-solid-core-biopsy-needle-a-critical-assessment-of-the-utility-benefits-and-limitations-of-the-instruments-employed-in-current-day-haematology-and-oncology
#2
REVIEW
Anwarul Islam
The optimal clinical evaluation of the bone marrow requires an examination of air-dried and well-stained films of the aspirated tissue along with a histopathological evaluation of adequately processed and properly stained core biopsy specimens. A bone marrow evaluation can be essential in establishing a diagnosis, determining the efficacy of treatment in haematological disorders and to monitor haematological status of patients following bone marrow/stem cell transplantation. It is also an essential component of the staging process for newly diagnosed malignancies...
December 7, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29217467/why-should-we-measure-free-25-oh-vitamin-d
#3
REVIEW
Oleg Tsuprykov, Xin Chen, Carl-Friedrich Hocher, LianghongYin, Berthold Hocher
Vitamin D, either in its D2 or D3 form, is essential for normal human development during intrauterine life, kidney function and bone health. Vitamin D deficiency has also been linked to cancer development and some autoimmune diseases. Given this huge impact of vitamin D on human health, it is important for daily clinical practice and clinical research to have reliable tools to judge on the vitamin D status. The major circulating form of vitamin D3 is 25-hydroxyvitamin D3 (25(OH)D), although is not the most active metabolite, the concentrations of total 25-hydroxy vitamin D3 in the serum are currently routinely used in clinical practice to assess vitamin D status...
December 4, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29217393/acetabular-revision-using-trabecular-metal-augments-for-paprosky-type-3-defects
#4
Cathleen J O'Neill, Stephen B Creedon, Stephen A Brennan, Fiona J O'Mahony, Rosanne S Lynham, Shane Guerin, Rehan Gul, James A Harty
BACKGROUND: Trabecular Metal (TM) augments are one option when reconstructing bone loss during acetabular side revision surgery. METHODS: We studied 38 consecutive patients with Paprosky type 3 defects that were revised using a TM shell and one or more augments over a 6-year period. There were 29 Paprosky type 3A defects and 9 Paprosky type 3B defects. The mean age of the patients at the time of surgery was 68.2 years (range 48-84). The mean length of follow-up was 36 months (range 18-74)...
December 4, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29217091/microstructural-changes-associated-with-osteoporosis-negatively-affect-loading-induced-fluid-flow-around-osteocytes-in-cortical-bone
#5
Vittorio Gatti, Evan M Azoulay, Susannah P Fritton
Loading-induced interstitial fluid flow in the microporosities of bone is critical for osteocyte mechanotransduction and for the maintenance of tissue health, enhancing convective transport in the lacunar-canalicular system. In recent studies, our group has reported alterations of bone's vascular porosity and lacunar-canalicular system microarchitecture in a rat model of postmenopausal osteoporosis. In this work, poroelastic finite element analysis was used to investigate whether these microstructural changes can affect interstitial fluid flow around osteocytes...
November 16, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29215722/fgf-2-promotes-osteocyte-differentiation-through-increased-e11-podoplanin-expression
#6
Ekele Ikpegbu, Lena Basta, Dylan N Clements, Robert Fleming, Tonia L Vincent, David J Buttle, Andrew A Pitsillides, Katherine A Staines, Colin Farquharson
E11/podoplanin is critical in the early stages of osteoblast-to-osteocyte transitions (osteocytogenesis) however the upstream events which regulate E11 expression are unknown. The aim of this study was to examine the effects of FGF-2 on E11-mediated osteocytogenesis and to reveal the nature of the underlying signaling pathways regulating this process. Exposure of MC3T3 osteoblast-like cells and murine primary osteoblasts to FGF-2 (10ng/ml) increased E11 mRNA and protein expression (P < 0.05) after 4, 6 and 24 hours...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29214357/investigation-and-analysis-of-osteoporosis-falls-and-fragility-fractures-in-elderly-people-in-the-beijing-area-a-study-on-the-bone-health-status-of-elderly-people-%C3%A2-%C3%A2-80%C3%A2-years-old-with-life-self-care
#7
Jian Zhou, Ming-Zhao Qin, Qian Liu, Jin-Ping Liu
Among ≥ 80 years old and under life self-care in the Beijing area, the prevalences of osteoporosis, falls, and fragility fracture were high; and these prevalences were even higher in women. The treatment rate of osteoporosis is very low. Therefore, comprehensive and standardized prevention and treatment should be promoted. PURPOSE: The purpose of this study is to investigate prevalence of osteoporosis, falls, and fragility fractures in this population, and analyze related factors, in order to provide a basis for standardized prevention and treatment...
December 6, 2017: Archives of Osteoporosis
https://www.readbyqxmd.com/read/29212847/attempted-replication-of-snps-in-rankl-and-opg-with-musculoskeletal-adverse-events-during-aromatase-inhibitor-treatment-for-breast-cancer
#8
Jacqueline M Dempsey, Jingyue Xi, N Lynn Henry, James M Rae, Daniel L Hertz
Aromatase inhibitor (AI) therapy is highly efficacious in the treatment of estrogen receptor-positive breast cancer, however in a subset of patients AI use is discontinued due to drug-induced musculoskeletal adverse events (MS-AE). Several studies have investigated the role of germline single nucleotide polymorphisms on patients' risk of MS-AE's, however no associations have yet to be validated for translation into clinical practice. This study attempted to replicate SNPs in RANKL (rs7984870) and OPG (rs2073618) on the risk of AI-induced MS-AEs, and screen for secondary associations with MS-AE related treatment discontinuation and serum and urine markers of bone health...
December 6, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/29212713/a-degradation-fragment-of-type-x-collagen-is-a-real-time-marker-for-bone-growth-velocity
#9
Ryan F Coghlan, Jon A Oberdorf, Susan Sienko, Michael D Aiona, Bruce A Boston, Kara J Connelly, Chelsea Bahney, Jeremie LaRouche, Sarah M Almubarak, Daniel T Coleman, Irute Girkontaite, Klaus von der Mark, Gregory P Lunstrum, William A Horton
Despite its importance as a key parameter of child health and development, growth velocity is difficult to determine in real time because skeletal growth is slow and clinical tools to accurately detect very small increments of growth do not exist. We report discovery of a marker for skeletal growth in infants and children. The intact trimeric noncollagenous 1 (NC1) domain of type X collagen, the marker we designated as CXM for Collagen X Marker, is a degradation by-product of endochondral ossification that is released into the circulation in proportion to overall growth plate activity...
December 6, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/29212686/practice-patterns-in-the-care-of-acute-achilles-tendon-ruptures-is-there-an-association-with-level-i-evidence
#10
U Sheth, D Wasserstein, R Jenkinson, R Moineddin, H Kreder, S Jaglal
AIMS: To determine whether the findings from a landmark Canadian trial assessing the optimal management of acute rupture of the Achilles tendon influenced the practice patterns of orthopaedic surgeons in Ontario, Canada. MATERIALS AND METHODS: Health administrative databases were used to identify Ontario residents ≥ 18 years of age with an Achilles tendon rupture from April 2002 to March 2014. The rate of surgical repair (per 100 cases) was calculated for each calendar quarter...
December 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/29212681/ten-year-follow-up-study-of-three-alternative-bearing-surfaces-used-in-total-hip-arthroplasty-in-young-patients-a-prospective-randomised-controlled-trial
#11
A Atrey, S E Ward, A Khoshbin, N Hussain, E Bogoch, E H Schemitsch, J P Waddell
AIMS: We present the ten-year data of a cohort of patients, aged between 18 and 65 years (mean age 52.7 years; 19 to 64), who underwent total hip arthroplasty. Patients were randomised to be treated with a cobalt-chrome (CoCr) femoral head with an ultra-high molecular weight polyethylene (UHMWPE), highly cross-linked polyethylene (XLPE) or ceramic-on-ceramic (CoC) bearing surface. PATIENTS AND METHODS: A total of 102 hips (91 patients) were randomised into the three groups...
December 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/29212678/the-myths-of-big-data-in-health-care
#12
REVIEW
D J Jacofsky
'Big data' is a term for data sets that are so large or complex that traditional data processing applications are inadequate. Billions of dollars have been spent on attempts to build predictive tools from large sets of poorly controlled healthcare metadata. Companies often sell reports at a physician or facility level based on various flawed data sources, and comparative websites of 'publicly reported data' purport to educate the public. Physicians should be aware of concerns and pitfalls seen in such data definitions, data clarity, data relevance, data sources and data cleaning when evaluating analytic reports from metadata in health care...
December 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/29211319/clinical-implications-of-bone-marrow-adiposity
#13
REVIEW
Annegreet G Veldhuis-Vlug, Clifford J Rosen
Marrow adipocytes, collectively termed marrow adipose tissue (MAT), reside in the bone marrow in close contact to bone cells and hematopoietic cells. Marrow adipocytes arise from the mesenchymal stem cell and share their origin with the osteoblastst. Shifts in the lineage allocation of the mesenchymal stromal cell could potentially explain the association between increased MAT and increased fracture risk in diseases such as postmenopausal osteoporosis, anorexia nervosa and diabetes. Functionally, marrow adipocytes secrete adipokines, such as adiponectin, and cytokines, such as RANK-ligand and stem cell factor...
December 6, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/29211305/improving-bone-health-in-men-with-prostate-cancer-receiving-androgen-deprivation-therapy-results-of-a-randomized-phase-2-trial
#14
Shabbir M H Alibhai, Henriette Breunis, Narhari Timilshina, Maryam S Hamidi, Angela M Cheung, George A Tomlinson, Tharsika Manokumar, Osai Samadi, Joanna Sandoval, Sara Durbano, Padraig Warde, Jennifer M Jones
BACKGROUND: Strategies to improve bone health care in men receiving androgen deprivation therapy (ADT) are not consistently implemented. The authors conducted a phase 2 randomized controlled trial of 2 education-based models-of-care interventions to determine their feasibility and ability to improve bone health care. METHODS: A single-center parallel-group randomized controlled trial of men with prostate cancer who were receiving ADT was performed. Participants were randomized 1:1:1 to 1) a patient bone health pamphlet and brief recommendations for their family physician (BHP+FP); 2) a BHP and support from a bone health care coordinator (BHP+BHCC); or 3) usual care...
December 6, 2017: Cancer
https://www.readbyqxmd.com/read/29211036/diphlorethohydroxycarmalol-from-ishige-okamurae-suppresses-osteoclast-differentiation-by-downregulating-the-nf-%C3%AE%C2%BAb-signaling-pathway
#15
Hye Jung Ihn, Ju Ang Kim, Hye Sung Cho, Hong-In Shin, Gi-Young Kim, Yung Hyun Choi, You-Jin Jeon, Eui Kyun Park
Marine algae possess a variety of beneficial effects on human health. In this study, we investigated whether diphlorethohydroxycarmalol (DPHC), isolated from Ishige okamurae, a brown alga, suppresses receptor activator of nuclear factor-κB ligand (RANKL)-induced osteoclast differentiation. DPHC significantly suppressed RANKL-induced osteoclast differentiation and macrophage-colony stimulating factor (M-CSF) expression in a dose-dependent manner. In addition, it significantly inhibited actin ring formation, the expression of osteoclast marker genes, such as tartrate-resistant acid phosphatase (TRAP), nuclear factor of activated T-cells cytoplasmic 1 (Nfatc1), cathepsin K (Ctsk), and dendritic cell-specific transmembrane protein (Dcstamp), and osteoclast-induced bone resorption...
December 6, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29210825/graftless-maxillary-sinus-lift-using-lateral-window-approach-a-systematic-review
#16
Marcelo Parra, Claudia Atala-Acevedo, Rodrigo Fariña, Ziyad S Haidar, Carlos Zaror, Sergio Olate
PURPOSE: The aim was to determine the survival rate of dental implants installed in the posterior region of the maxilla after a graftless maxillary sinus lift via the lateral window approach and to identify the factors involved in the results. MATERIALS AND METHODS: A systematic search was done on MEDLINE, EMBASE, LILACS, Scopus, and Science Direct up to June 2016; additional studies were identified through an analysis of references. Primary studies in English, Spanish, Portuguese, and French were included; the selection and data extraction process was conducted by 2 investigators independently, and the methodological quality was evaluated by means of the Effective Public Health Practice Project's Quality Assessment Tool...
November 27, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/29209529/patient-reported-pain-severity-pain-interference-and-health-status-in-hr-her2-advanced-metastatic-breast-cancer
#17
Robert Wood, Debanjali Mitra, Jonathan de Courcy, Shrividya Iyer
Introduction: Patient-reported pain severity and related impact in advanced/metastatic breast cancer (ABC/MBC) are not well documented. The objective of this study was to assess pain and general health status in hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) ABC/MBC. Methods: Data were collected in the USA and Europe in a real-world, cross-sectional study. Patients were recruited at oncology practices and completed validated questionnaires; pain severity and interference were assessed using the Brief Pain Inventory (BPI) and general health status using the EuroQoL-5D (EQ-5D-3L)...
2017: ESMO Open
https://www.readbyqxmd.com/read/29209434/vitamin-d-in-the-prevention-prediction-and-treatment-of-neurodegenerative-and-neuroinflammatory-diseases
#18
REVIEW
Priscilla Koduah, Friedemann Paul, Jan-Markus Dörr
Vitamin D research has gained increased attention in recent times due to its roles beyond bone health and calcium homeostasis, such as immunomodulation. In some parts of the brain and on immune cells, vitamin D hydroxylating enzymes and its receptors are located. Epidemiological evidence demonstrates that deficiency of Vitamin D is relevant for disease risk and course in multiple sclerosis (MS) and presumably also in neuromyelitis optica spectrum disorders (NMOSD), Parkinson's disease (PD), and Alzheimer's disease (AD)...
December 2017: EPMA Journal
https://www.readbyqxmd.com/read/29208899/in-vivo-transplantation-of-3d-encapsulated-ovarian-constructs-in-rats-corrects-abnormalities-of-ovarian-failure
#19
Sivanandane Sittadjody, Justin M Saul, John P McQuilling, Sunyoung Joo, Thomas C Register, James J Yoo, Anthony Atala, Emmanuel C Opara
Safe clinical hormone replacement (HR) will likely become increasingly important in the growing populations of aged women and cancer patients undergoing treatments that ablate the ovaries. Cell-based HRT (cHRT) is an alternative approach that may allow certain physiological outcomes to be achieved with lower circulating hormone levels than pharmacological means due to participation of cells in the hypothalamus-pituitary-ovary feedback control loop. Here we describe the in vivo performance of 3D bioengineered ovarian constructs that recapitulate native cell-cell interactions between ovarian granulosa and theca cells as an approach to cHRT...
December 5, 2017: Nature Communications
https://www.readbyqxmd.com/read/29207962/a-partially-supervised-physical-activity-program-for-adult-and-adolescent-survivors-of-childhood-cancer-surfit-study-design-of-a-randomized-controlled-trial-nct02730767
#20
Corina S Rueegg, Susi Kriemler, Simeon J Zuercher, Christina Schindera, Andrea Renner, Helge Hebestreit, Christian Meier, Prisca Eser, Nicolas X von der Weid
BACKGROUND: Beyond survival of nowadays >80%, modern childhood cancer treatment strives to preserve long-term health and quality of life. However, the majority of today's survivors suffer from short- and long-term adverse effects such as cardiovascular and pulmonary diseases, obesity, osteoporosis, fatigue, depression, and reduced physical fitness and quality of life. Regular exercise can play a major role to mitigate or prevent such late-effects. Despite this, there are no data on the effects of regular exercise in childhood cancer survivors from randomized controlled trials (RCTs)...
December 5, 2017: BMC Cancer
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