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https://www.readbyqxmd.com/read/28328216/natural-attenuation-in-streambed-sediment-receiving-chlorinated-solvents-from-underlying-fracture-networks
#1
Burcu Simsir, Jun Yan, Jeongdae Im, Duane Graves, Frank E Löffler
Contaminant discharge from fractured bedrock formations remains a remediation challenge. We applied an integrated approach to assess the natural attenuation potential of sediment that forms the transition zone between upwelling groundwater from a chlorinated solvent-contaminated fractured bedrock aquifer and the receiving surface water. In situ measurements demonstrated that reductive dechlorination in the sediment attenuated chlorinated compounds before reaching the water column. Microcosms established with creek sediment or in situ incubated Bio-Sep beads degraded C1-C3 chlorinated solvents to less chlorinated or innocuous products...
March 22, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28325144/therapeutic-potential-and-outlook-of-alternative-medicine-for-osteoporosis
#2
Tao Wang, Qian Liu, William Tjhioe, Jinmin Zhao, Aiping Lu, Ge Zhang, Renxiang Tan, Mengyu Zhou, Jiake Xu, Haotian Feng
Osteoporosis, a bone disease resulting in loss of bone density and microstructure quality, is often associated with fragility fractures, and the latter imposes a great burden on the patient and society. Although there are several different treatments available for osteoporosis such as hormone replacement therapy, bisphosphonates, Denosumab, and parathyroid hormone some concern has been raised regarding the inherent side effects of their long term use. It would be of great relevance to search for alternative natural compounds, which could complementarily overcome the limitations of the currently available therapy...
March 21, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28324276/the-cytotoxicity-and-genotoxicity-of-particulate-and-soluble-cobalt-in-human-urothelial-cells
#3
Rachel M Speer, Therry The, Hong Xie, Louis Liou, Rosalyn M Adam, John Pierce Wise
Cobalt use is increasing particularly due to its use as one of the primary metals in cobalt-chromium-molybdenum (CoCrMo) metal-on-metal prosthetics. CoCrMo is a high-strength, wear-resistant alloy with reduced risk for prosthetic loosening and device fracture. More than 500,000 people receive hip implants each year in the USA which puts them at potential risk for exposure to metal ions and particles released by the prosthetic implants. Data show cobalt ions released from prosthetics reach the bloodstream and accumulate in the bladder...
March 21, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28290981/case-report-of-clinical-vignette-osteopetrosis
#4
John B Moore, Thanh D Hoang, Alfred F Shwayhat
INTRODUCTION: Osteopetrosis is a connective tissue disorder resulting from abnormally dense bone predisposing patients to fracture. The clinical pattern of fractures across time and space as well as suggestive radiographic findings usually raises diagnostic suspicion. Multiple genetic mutations resulting in dysfunctional osteoclasts have been implicated in the pathogenesis of osteopetrosis with variable inheritance patterns. In severe cases, usually inherited in an autosomal recessive pattern, the medullary cavity important in the production of normal blood cell progenitors is replaced by defective endochondral bone, leading to pancytopenia and consequential extramedullary hematopoiesis...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28267369/compound-elevated-skull-fractures-review-of-literature
#5
G Lakshmi Prasad, N Anmol
INTRODUCTION: Compound elevated skull fractures (CESF) are rare traumatic injuries. To date, only 27 cases have been reported. METHODS: The authors report three cases of CESF managed at their institute. All were middle-aged males. The mechanism was assault by sharp-edged objects in two and road traffic accident (RTA) in one case. One underwent simple suturing; debridement and decompressive craniectomy was done in the remaining two cases. Good and poor outcomes were noted in one case each, while one died...
March 7, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28257626/two-novel-compound-heterozygous-bmp1-mutations-in-a-patient-with-osteogenesis-imperfecta-a-case-report
#6
Apiruk Sangsin, Chulaluck Kuptanon, Chalurmpon Srichomthong, Monnat Pongpanich, Kanya Suphapeetiporn, Vorasuk Shotelersuk
BACKGROUND: Osteogenesis imperfecta (OI) is a collagen-related bone dysplasia leading to a susceptibility to fractures. OI can be caused by mutations in several genes including BMP1. It encodes two isoforms, bone morphogenetic protein 1 (BMP1) and mammalian tolloid (mTLD); both have proteolytic activity to remove the C-propeptide from procollagen. CASE PRESENTATION: We report a Thai OI patient who had his first fracture at the age of three months. Using next generation sequencing, we successfully identified two novel compound heterozygous BMP1 mutations...
March 4, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28241421/age-related-loss-in-bone-mineral-density-of-rats-fed-lifelong-on-a-fish-oil-based-diet-is-avoided-by-coenzyme-q10-addition
#7
Alfonso Varela-López, Julio J Ochoa, José M Llamas-Elvira, Magdalena López-Frías, Elena Planells, MCarmen Ramirez-Tortosa, Cesar L Ramirez-Tortosa, Francesca Giampieri, Maurizio Battino, José L Quiles
During aging, bone mass declines increasing osteoporosis and fracture risks. Oxidative stress has been related to this bone loss, making dietary compounds with antioxidant properties a promising weapon. Male Wistar rats were maintained for 6 or 24 months on diets with fish oil as unique fat source, supplemented or not with coenzyme Q10 (CoQ10), to evaluate the potential of adding this molecule to the n-3 polyunsaturated fatty acid (n-3 PUFA)-based diet for bone mineral density (BMD) preservation. BMD was evaluated in the femur...
February 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28238366/modeling-potential-occupational-inhalation-exposures-and-associated-risks-of-toxic-organics-from-chemical-storage-tanks-used-in-hydraulic-fracturing-using-aermod
#8
Huan Chen, Kimberly E Carter
Various toxic chemicals used in hydraulic fracturing fluids may influence the inherent health risks associated with these operations. This study investigated the possible occupational inhalation exposures and potential risks related to the volatile organic compounds (VOCs) from chemical storage tanks and flowback pits used in hydraulic fracturing. Potential risks were evaluated based on radial distances between 5 m and 180 m from the wells for 23 contaminants with known inhalation reference concentration (RfC) or inhalation unit risks (IUR)...
February 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28216889/osteoblasts-proliferation-and-differentiation-stimulating-activities-of-the-main-components-of-epimedii-folium
#9
Mingming Liu, Haiyan Xu, Yong Ma, Jian Cheng, Zhen Hua, Guicheng Huang
BACKGROUND: Osteoporosis is a disease of bones that leads to an increased risk of fracture. Epimedii Folium is commonly used for treating bone fractures and joint diseases for thousands of years in China. METHODS: This study was aimed to screen active components, which might have the potency to stimulate osteoblasts proliferation and differentiation in Epimedii Folium. An HPLC method was established to analyze the main components in Epimedii Folium. The MTT and ALP methods were utilized for the assay of osteoblasts proliferation and differentiation activity...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28203011/-impact-of-apical-preparation-diameter-on-fracture-resistance-of-mandibular-premolar-roots
#10
S Y Tian, W Bai, Y H Liang
OBJECTIVE: To compare the fracture resistance of roots of mandibular premolar with different apical preparation diameters. METHODS: Sixty single-rooted single canal permanent mandibular premolar teeth extracted newly for orthodontic reason without immatureness, fracture or cracks were selected, with a curvature less than 10°, and internal length: short diameter of less than 2 at a level 5 mm from the apex. All the teeth were decoronated, leaving roots 13 mm in length...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28194389/elastic-suture-shoelace-technique-for-fasciotomy-closure-after-treatment-of-compartmental-syndrome-associated-to-tibial-fracture
#11
Paulo Sergio Martins Castelo Branco, Mauricio Cardoso Junior, Isaac Rotbande, José Antonio Fraga Ciraudo, Celso Ricardo Correa de Melo Silva, Paulo Cesar Dos Santos Leal
This article reports the use of elastic suture as an adjuvant in surgical wound closure caused by decompressive fasciotomy after compartment syndrome associated with a compound fracture of the tibia. Widely used in other medico-surgical specialties, this technique is unusual in orthopedics surgery, but the simplicity of the procedure and the successful outcome observed in this case allows for its consideration as indicated for situations similar to that presented in this study.
January 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28192073/recurrent-and-novel-mutations-in-the-ntrk1-gene-lead-to-rare-congenital-insensitivity-to-pain-with-anhidrosis-in-two-chinese-patients
#12
Fang Lv, Xiao-Jie Xu, Yu-Wen Song, Lu-Jiao Li, Ou Wang, Yan Jiang, Wei-Bo Xia, Xiao-Ping Xing, Peng Gao, Mei Li
BACKGROUND: Congenital insensitivity to pain with anhidrosis (CIPA) is an extremely rare autosomal recessive autonomic and sensory neuropathy. CIPA is associated with various mutations in NTRK1. CASES: Two unrelated Chinese patients presented separately with symptoms of insensitivity to pain, inability to sweat, repeated painless fractures, and Charcot arthropathy were recruited. Both of them were clinically diagnosed with CIPA. Increased serum bone resorption marker (β-CTX) levels and decreased BMD were observed in both patients...
February 10, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28188129/enhancement-of-fracture-healing-in-the-rat-modulated-by-compounds-that-stimulate-inducible-nitric-oxide-synthase-acceleration-of-fracture-healing-via-inducible-nitric-oxide-synthase
#13
R A Rajfer, A Kilic, A S Neviaser, L M Schulte, S M Hlaing, J Landeros, M G Ferrini, E Ebramzadeh, S-H Park
OBJECTIVES: We investigated the effects on fracture healing of two up-regulators of inducible nitric oxide synthase (iNOS) in a rat model of an open femoral osteotomy: tadalafil, a phosphodiesterase inhibitor, and the recently reported nutraceutical, COMB-4 (consisting of L-citrulline, Paullinia cupana, ginger and muira puama), given orally for either 14 or 42 days. MATERIALS AND METHODS: Unilateral femoral osteotomies were created in 58 male rats and fixed with an intramedullary compression nail...
February 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28176971/compound-dorsal-dislocation-of-lunate-with-trapezoid-fracture
#14
Bong-Sung Kim, Gerrit Grieb, Patrick Rhodius, Arne H Böcker, Jan-Philipp Stromps, Nils Andreas Krämer, Norbert Pallua
We report about a dorsal dislocation of the lunate accompanied by a trapezoid fracture in a 41-year old male patient after a motorcycle accident. The lunate dislocation with no dorsal or volar intercalated segment instability (DISI, VISI) was diagnosed by x-ray whereas the trapezoid fracture was only diagnosable by computed tomography. A closed reduction and internal fixation of the lunate by two Kirschner wires was performed, the trapezoid fracture was conservatively treated. Surgery was followed by immobilization, intense physiotherapy and close follow-up...
October 24, 2016: Clinics and Practice
https://www.readbyqxmd.com/read/28164044/accidental-bolt-gun-injury-to-femur-a-case-report
#15
Ravi Prasad Kattimani, Sanath Shetty, Humayun Mirza
INTRODUCTION: Bolt gun or slaughterer's guns are used in meat industry for "humane killing" of animals. Injuries caused by bolt gun are rare, reported exclusively from central European countries. We report a case of 28 year old male, who accidentally shot himself with a bolt gun to his right thigh. CASE REPORT: A 28 years old male presented to our Accident and Emergency department after accidental injury to his right thigh with bolt gun. He had an entry wound measuring 2 cm in length and 1 cm in breadth over anterior aspect of lower one third of thigh at lower and sustained Grade II compound fracture of right femur shaft at distal one third...
September 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28152165/estimating-pesticide-attenuation-from-water-dating-and-the-ratio-of-metabolite-to-parent-compound
#16
REVIEW
Julien Farlin, Michael Bayerle, Denis Pittois, Tom Gallé
Although pesticides are primarily degraded in the topsoil, significant attenuation can be expected in groundwater systems where the transit time of pesticides usually are orders of magnitude longer than in the soil. Because degradation and transport processes in the subsurface take place at time scales of months to years or even decades, direct measurements of natural attenuation are hampered by practical and logistical limitations (for instance the limited duration of sampling or a correct estimation of the pesticide flux into groundwater)...
February 2, 2017: Ground Water
https://www.readbyqxmd.com/read/28142646/biological-treatment-of-fracturing-waste-liquid-in-a-membrane-coupled-internal-circulation-aerobic-biological-fluidized-bed-with-the-assistance-of-coagulation
#17
Yizhou Tu, Xing-Peng Liu, Hui-Qiang Li, Ping Yang
Fracturing waste liquid (FWL) is generated during shale gas extraction and contains high concentrations of suspended solid, salinity and organic compounds, which needs proper management to prevent excessive environmental disruption. Biological treatment of the FWL was attempted in this study using a membrane-coupled internal circulation aerobic biological fluidized bed (MC-ICABFB) after being treated by coagulation. The results showed that poly aluminum chloride (PAC) of 30 g/L, polyacrylamide (PAM) of 20 mg/L and pH of 7...
February 21, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28140571/sublethal-and-reproductive-effects-of-acute-and-chronic-exposure-to-flowback-and-produced-water-from-hydraulic-fracturing-on-the-water-flea-daphnia-magna
#18
Tamzin A Blewett, Perrine L M Delompré, Yuhe He, Erik J Folkerts, Shannon L Flynn, Daniel S Alessi, Greg G Goss
Hydraulic fracturing is an industrial process allowing for the extraction of gas or oil. To fracture the rocks, a proprietary mix of chemicals is injected under high pressure, which later returns to the surface as flowback and produced water (FPW). FPW is a complex chemical mixture consisting of trace metals, organic compounds, and often, high levels of salts. FPW toxicity to the model freshwater crustacean Daphnia magna was characterized utilizing acute (48 h median lethal concentrations; LC50) and chronic (21 day) exposures...
February 13, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28125537/the-lymphatic-response-to-injury-with-soft-tissue-reconstruction-in-high-energy-open-tibial-fractures-of-the-lower-extremity
#19
Malou C van Zanten, Raakhi M Mistry, Hiroo Suami, Andrew Campbell-Lloyd, James P Finkemeyer, Neil B Piller, Yugesh Caplash
BACKGROUND: Severe compound tibial fractures are associated with extensive soft-tissue damage, resulting in disruption of lymphatic pathways that leave the patient at risk of developing chronic lymphedema. There are limited data on lymphatic response following lower limb trauma. Indocyanine green fluorescence lymphography is a novel, real-time imaging technique for superficial lymphatic mapping. The authors used this technique to image the superficial lymphatic vessels of the lower limbs in patients with severe compound tibial fracture...
February 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28116328/molecular-spectrum-and-differential-diagnosis-in-patients-referred-with-sporadic-or-autosomal-recessive-osteogenesis-imperfecta
#20
Jose A Caparros-Martin, Mona S Aglan, Samia Temtamy, Ghada A Otaify, Maria Valencia, Julián Nevado, Elena Vallespin, Angela Del Pozo, Carmen Prior de Castro, Lucia Calatrava-Ferreras, Pilar Gutierrez, Ana M Bueno, Belen Sagastizabal, Encarna Guillen-Navarro, Maria Ballesta-Martinez, Vanesa Gonzalez, Sarenur Y Basaran, Ruksan Buyukoglan, Bilge Sarikepe, Cecilia Espinoza-Valdez, Francisco Cammarata-Scalisi, Victor Martinez-Glez, Karen E Heath, Pablo Lapunzina, Victor L Ruiz-Perez
BACKGROUND: Osteogenesis imperfecta (OI) is a heterogeneous bone disorder characterized by recurrent fractures. Although most cases of OI have heterozygous mutations in COL1A1 or COL1A2 and show autosomal dominant inheritance, during the last years there has been an explosion in the number of genes responsible for both recessive and dominant forms of this condition. Herein, we have analyzed a cohort of patients with OI, all offspring of unaffected parents, to determine the spectrum of variants accounting for these cases...
January 2017: Molecular Genetics & Genomic Medicine
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