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https://www.readbyqxmd.com/read/29742571/simple-bone-cyst-mimicking-stafne-bone-defect
#1
Eduardo Massaharu Aoki, Reinaldo Abdala-Júnior, Cibele Pidorodeski Nagano, Elisabeth Bannwart Mendes, Jefferson Xavier de Oliveira, Silvia Vanessa Lourenço, Emiko Saito Arita
Stafne bone defects (SBDs) are asymptomatic lingual bony defects in mandible, which are usually detected as an incidental finding in plain radiographs. Similarly, simple bone cysts (SBCs) are most frequently found in posterior region of the mandible and also are asymptomatic. However, due to anatomical structures overlap in plain radiographs, there is a possibility of misdiagnosing SBD that often is diagnosed by presumptive diagnosis observed in plain radiograph. This report shows an unusual case that a SBC resembles a SBD...
May 8, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29699539/collection-of-social-determinants-of-health-in-the-community-clinic-setting-a-cross-sectional-study
#2
Sheila V Kusnoor, Taneya Y Koonce, Suzanne T Hurley, Kalonji M McClellan, Mallory N Blasingame, Elizabeth T Frakes, Li-Ching Huang, Marcia I Epelbaum, Nunzia B Giuse
BACKGROUND: Addressing social and behavioral determinants of health (SBDs) may help improve health outcomes of community clinic patients. This cross-sectional study explored how assessing SBDs can be used to complement health data collection strategies and provide clinicians with a more in-depth understanding of their patients. METHODS: Adult patients, ages 18 and older, at an urban community health care clinic in Tennessee, U.S.A., were asked to complete a questionnaire regarding health status, health history and SBDs while waiting for their clinic appointment...
April 24, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29495458/substrate-binding-switches-the-conformation-at-the-lynchpin-site-in-the-substrate-binding-domain-of-human-hsp70-to-enable-allosteric-interdomain-communication
#3
Kohei Umehara, Miho Hoshikawa, Naoya Tochio, Shin-Ichi Tate
The stress-induced 70 kDa heat shock protein (Hsp70) functions as a molecular chaperone to maintain protein homeostasis. Hsp70 contains an N-terminal ATPase domain (NBD) and a C-terminal substrate-binding domain (SBD). The SBD is divided into the β subdomain containing the substrate-binding site (βSBD) and the α-helical subdomain (αLid) that covers the βSBD. In this report, the solution structures of two different forms of the SBD from human Hsp70 were solved. One structure shows the αLid bound to the substrate-binding site intramolecularly, whereas this intramolecular binding mode is absent in the other structure solved...
February 27, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29486154/protein-linkers-provide-limits-on-the-domain-interactions-in-the-abc-importer-glnpq-and-determine-the-rate-of-transport
#4
Gea K Schuurman-Wolters, Marijn de Boer, Martyna K Pietrzyk, Bert Poolman
GlnPQ is an ATP-binding cassette importer with a unique domain organization and intricate transport behavior. The protein has two extracytoplamic substrate-binding domains (SBDs) per membrane subunit, each with different specificity for amino acids and different spacing to the translocator domain. We determined the effect of the length and structure of the linkers, which connect the SBDs to each other and to the membrane-embedded translocator domain, on the transport by GlnPQ. We reveal that varying the linker length impacts transport in a dual manner that depends on the conformational dynamics of the SBD...
April 13, 2018: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29484970/the-effects-of-anionic-and-non-ionic-surfactant-on-anaerobic-co-digestion-of-sludge-food-wastes-and-green-wastes
#5
Jian Sun, Yuchi Zhang, Xiaofang Pan, Gefu Zhu
Surfactants are widely used and discharged into wastewater treatment plants, which might influence the anaerobic digestion (AD) treatment of municipal waste. In this study, the effects of typical anionic surfactants sodium dodecyl benzene6 sulfonate (SDBS) and non-ionic surfactants APG, on mesophilic anaerobic co-digestion of sludge, food waste, and green waste were investigated. Results indicated that at 5 mg/g, the biogas production was inhibited in SDBS supplemented systems while stimulated in APG-added reactors, with the methane yield of 146...
March 5, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29475520/forces-associated-with-launch-into-space-do-not-impact-bone-fracture-healing
#6
Paul Childress, Alexander Brinker, Cynthia-May S Gong, Jonathan Harris, David J Olivos, Jeffrey D Rytlewski, David C Scofield, Sungshin Y Choi, Yasaman Shirazi-Fard, Todd O McKinley, Tien-Min G Chu, Carolynn L Conley, Nabarun Chakraborty, Rasha Hammamieh, Melissa A Kacena
Segmental bone defects (SBDs) secondary to trauma invariably result in a prolonged recovery with an extended period of limited weight bearing on the affected limb. Soldiers sustaining blast injuries and civilians sustaining high energy trauma typify such a clinical scenario. These patients frequently sustain composite injuries with SBDs in concert with extensive soft tissue damage. For soft tissue injury resolution and skeletal reconstruction a patient may experience limited weight bearing for upwards of 6 months...
February 2018: Life Sciences in Space Research
https://www.readbyqxmd.com/read/29461845/wide-spectral-photoresponse-of-layered-platinum-diselenide-based-photodiodes
#7
Chanyoung Yim, Niall McEvoy, Sarah Riazimehr, Daniel S Schneider, Farzan Gity, Scott Monaghan, Paul K Hurley, Max C Lemme, Georg S Duesberg
Platinum diselenide (PtSe2 ) is a group-10 transition metal dichalcogenide (TMD) that has unique electronic properties, in particular a semimetal-to-semiconductor transition when going from bulk to monolayer form. We report on vertical hybrid Schottky barrier diodes (SBDs) of two-dimensional (2D) PtSe2 thin films on crystalline n-type silicon. The diodes have been fabricated by transferring large-scale layered PtSe2 films, synthesized by thermally assisted conversion of predeposited Pt films at back-end-of-the-line CMOS compatible temperatures, onto SiO2 /Si substrates...
March 14, 2018: Nano Letters
https://www.readbyqxmd.com/read/29444436/shwachman-diamond-syndrome-protein-sbds-maintains-human-telomeres-by-regulating-telomerase-recruitment
#8
Yi Liu, Feng Liu, Yizhao Cao, Huimin Xu, Yangxiu Wu, Su Wu, Dan Liu, Yong Zhao, Zhou Songyang, Wenbin Ma
Shwachman-Diamond syndrome (SDS) is a rare pediatric disease characterized by various systemic disorders, including hematopoietic dysfunction. The mutation of Shwachman-Bodian-Diamond syndrome (SBDS) gene has been proposed to be a major causative reason for SDS. Although SBDS patients were reported to have shorter telomere length in granulocytes, the underlying mechanism is still unclear. Here we provide data to elucidate the role of SBDS in telomere protection. We demonstrate that SBDS deficiency leads to telomere shortening...
February 13, 2018: Cell Reports
https://www.readbyqxmd.com/read/29432725/energy-coupling-efficiency-in-the-type-i-abc-transporter-glnpq
#9
Jelger A Lycklama A Nijeholt, Ruslan Vietrov, Gea K Schuurman-Wolters, Bert Poolman
Solute transport via ATP binding cassette (ABC) importers involves receptor-mediated substrate binding, which is followed by ATP-driven translocation of the substrate across the membrane. How these steps are exactly initiated and coupled, and how much ATP it takes to complete a full transport cycle, are subject of debate. Here, we reconstitute the ABC importer GlnPQ in nanodiscs and in proteoliposomes and determine substrate-(in)dependent ATP hydrolysis and transmembrane transport. We determined the conformational states of the substrate-binding domains (SBDs) by single-molecule Förster resonance energy transfer measurements...
March 16, 2018: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29359648/ligand-induced-folding-of-the-first-identified-cbm69-starch-binding-domain-amyp-sbd
#10
Wei Zhang, Jigang Yu, Xuecheng Zhang, Hui Peng, Xinxin Li, Jiahai Zhang, Hongbin Sun, Xiaoming Tu
AmyP is an α-amylase which shows preferential degradation to soluble starch. In this substrate preference its starch binding domain (SBD), which was recently assigned to a new carbohydrate binding module (CBM) family 69, plays an important role. In the present study, the SBD of AmyP (AmyP-SBD) was recombinantly expressed, purified, and structurally characterized. Using circular dichroism (CD), intrinsic fluorescence, and nuclear magnetic resonance (NMR) spectroscopy, the structures of AmyP-SBD in the absence and presence of substrate analogue β-cyclodextrin were measured...
January 22, 2018: Protein and Peptide Letters
https://www.readbyqxmd.com/read/29316726/electric-characteristic-enhancement-of-an-azo-si-schottky-barrier-diode-with-hydrogen-plasma-surface-treatment-and-al-x-o-x-guard-ring-structure
#11
Chien-Yu Li, Min-Yu Cheng, Mau-Phon Houng, Cheng-Fu Yang, Jing Liu
In this study, the design and fabrication of AZO/n-Si Schottky barrier diodes (SBDs) with hydrogen plasma treatment on silicon surface and Alx Ox guard ring were presented. The Si surface exhibited less interface defects after the cleaning process following with 30 w of H₂ plasma treatment that improved the switching properties of the following formed SBDs. The rapid thermal annealing experiment also held at 400 °C to enhance the breakdown voltage of SBDs. The edge effect of the SBDs was also suppressed with the Alx Ox guard ring structure deposited by the atomic layer deposition (ALD) at the side of the SBDs...
January 8, 2018: Materials
https://www.readbyqxmd.com/read/29285795/ataluren-driven-restoration-of-shwachman-bodian-diamond-syndrome-protein-function-in-shwachman-diamond-syndrome-bone-marrow-cells
#12
Valentino Bezzerri, Donatella Bardelli, Jacopo Morini, Antonio Vella, Simone Cesaro, Claudio Sorio, Andrea Biondi, Cesare Danesino, Piero Farruggia, Baroukh Maurice Assael, Giovanna D'amico, Marco Cipolli
Shwachman-Diamond syndrome (SDS) is a rare inherited recessive disease mainly caused by mutations in the Shwachman-Bodian-Diamond syndrome (SBDS) gene, which encodes for the homonymous protein SBDS, whose function still remains to be fully established. SDS affects several organs causing bone marrow failure, exocrine pancreatic insufficiency, skeletal malformations, and cognitive disorders. About 15% of SDS patients develop myelodysplastic syndrome (MDS) and are at higher risk of developing acute myeloid leukemia (AML)...
August 2018: American Journal of Hematology
https://www.readbyqxmd.com/read/29146883/a-landscape-of-germ-line-mutations-in-a-cohort-of-inherited-bone-marrow-failure-patients
#13
Olivier Bluteau, Marie Sebert, Thierry Leblanc, Régis Peffault de Latour, Samuel Quentin, Elodie Lainey, Lucie Hernandez, Jean-Hugues Dalle, Flore Sicre de Fontbrune, Etienne Lengline, Raphael Itzykson, Emmanuelle Clappier, Nicolas Boissel, Nadia Vasquez, Mélanie Da Costa, Julien Masliah-Planchon, Wendy Cuccuini, Anna Raimbault, Louis De Jaegere, Lionel Adès, Pierre Fenaux, Sébastien Maury, Claudine Schmitt, Marc Muller, Carine Domenech, Nicolas Blin, Bénédicte Bruno, Isabelle Pellier, Mathilde Hunault, Stéphane Blanche, Arnaud Petit, Guy Leverger, Gérard Michel, Yves Bertrand, André Baruchel, Gérard Socié, Jean Soulier
Bone marrow (BM) failure (BMF) in children and young adults is often suspected to be inherited, but in many cases diagnosis remains uncertain. We studied a cohort of 179 patients (from 173 families) with BMF of suspected inherited origin but unresolved diagnosis after medical evaluation and Fanconi anemia exclusion. All patients had cytopenias, and 12.0% presented ≥5% BM blast cells. Median age at genetic evaluation was 11 years; 20.7% of patients were aged ≤2 years and 36.9% were ≥18 years. We analyzed genomic DNA from skin fibroblasts using whole-exome sequencing, and were able to assign a causal or likely causal germ line mutation in 86 patients (48...
February 15, 2018: Blood
https://www.readbyqxmd.com/read/29143488/isolation-and-characterization-of-novel-goose-parvovirus-related-virus-reveal-the-evolution-of-waterfowl-parvovirus
#14
P Li, S Lin, R Zhang, J Chen, D Sun, J Lan, S Song, Z Xie, S Jiang
Short beak and dwarfism syndrome (SBDS) has been constantly breaking out in China since 2015. It is caused by a novel goose parvovirus-related virus (NGPV) and can severely restrict the growth of ducks. In this study, seven NGPV stains were isolated from different regions in China between 2015 and 2016. To better understand the correlation between NGPV and goose parvovirus (GPV), we conducted complete genome sequencing and a comprehensive analysis of the NGPV genome. The phylogenetic and alignment analysis showed that NGPV is a branch of GPV, sharing 92...
April 2018: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29103688/pathogenicity-of-pekin-duck-and-goose-origin-parvoviruses-in-pekin-ducklings
#15
Kang Ning, Minghang Wang, Shenghua Qu, Junfeng Lv, Lixin Yang, Dabing Zhang
Goose parvovirus (GPV) usually affects goslings and Muscovy ducks but not Pekin ducks. Earlier works showed that a variant GPV can cause short beak and dwarfism syndrome (SBDS) in Pekin ducks. Here, we investigated the pathogenicity of a variant GPV of Pekin duck-origin (JS1) and a classical GPV of goose-origin (H) in Pekin ducklings. Following intramuscular infection at two days of age, both JS1 and H strains influenced weight gain and development of beaks and bones of wings and legs, and caused microscopic lesions of internal organs of ducks...
October 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/29025585/genetic-gastric-cancer-susceptibility-in-the-international-clinical-cancer-genomics-community-research-network
#16
Thomas Slavin, Susan L Neuhausen, Christina Rybak, Ilana Solomon, Bita Nehoray, Kathleen Blazer, Mariana Niell-Swiller, Aaron W Adamson, Yate-Ching Yuan, Kai Yang, Sharon Sand, Danielle Castillo, Josef Herzog, Xiwei Wu, Shu Tao, Tanya Chavez, Yanghee Woo, Joseph Chao, Pamela Mora, Darling Horcasitas, Jeffrey Weitzel
Few susceptibility genes for gastric cancer have been identified. We sought to identify germline susceptibility genes from participants with gastric cancer from an international hereditary cancer research network. Adults with gastric cancer of any histology, and with a germline DNA sample (n = 51), were retrospectively selected. For those without previously identified germline mutations (n = 43), sequencing was performed for 706 candidate genes. Twenty pathogenic or likely pathogenic variants were identified among 18 participants...
October 2017: Cancer Genetics
https://www.readbyqxmd.com/read/28972538/mutations-in-signal-recognition-particle-srp54-cause-syndromic-neutropenia-with-shwachman-diamond-like-features
#17
Raphael Carapito, Martina Konantz, Catherine Paillard, Zhichao Miao, Angélique Pichot, Magalie S Leduc, Yaping Yang, Katie L Bergstrom, Donald H Mahoney, Deborah L Shardy, Ghada Alsaleh, Lydie Naegely, Aline Kolmer, Nicodème Paul, Antoine Hanauer, Véronique Rolli, Joëlle S Müller, Elisa Alghisi, Loïc Sauteur, Cécile Macquin, Aurore Morlon, Consuelo Sebastia Sancho, Patrizia Amati-Bonneau, Vincent Procaccio, Anne-Laure Mosca-Boidron, Nathalie Marle, Naël Osmani, Olivier Lefebvre, Jacky G Goetz, Sule Unal, Nurten A Akarsu, Mirjana Radosavljevic, Marie-Pierre Chenard, Fanny Rialland, Audrey Grain, Marie-Christine Béné, Marion Eveillard, Marie Vincent, Julien Guy, Laurence Faivre, Christel Thauvin-Robinet, Julien Thevenon, Kasiani Myers, Mark D Fleming, Akiko Shimamura, Elodie Bottollier-Lemallaz, Eric Westhof, Claudia Lengerke, Bertrand Isidor, Seiamak Bahram
Shwachman-Diamond syndrome (SDS) (OMIM #260400) is a rare inherited bone marrow failure syndrome (IBMFS) that is primarily characterized by neutropenia and exocrine pancreatic insufficiency. Seventy-five to ninety percent of patients have compound heterozygous loss-of-function mutations in the Shwachman-Bodian-Diamond syndrome (sbds) gene. Using trio whole-exome sequencing (WES) in an sbds-negative SDS family and candidate gene sequencing in additional SBDS-negative SDS cases or molecularly undiagnosed IBMFS cases, we identified 3 independent patients, each of whom carried a de novo missense variant in srp54 (encoding signal recognition particle 54 kDa)...
November 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28955752/preparation-and-characterization-of-cockle-shell-aragonite-nanocomposite-porous-3d-scaffolds-for-bone-repair
#18
Saffanah Khuder Mahmood, Md Zuki Abu Bakar Zakaria, Intan Shameha Binti Abdul Razak, Loqman Mohamed Yusof, Alhaji Zubair Jaji, Isa Tijani, Nahidah Ibrahim Hammadi
The demands for applicable tissue-engineered scaffolds that can be used to repair load-bearing segmental bone defects (SBDs) is vital and in increasing demand. In this study, seven different combinations of 3 dimensional (3D) novel nanocomposite porous structured scaffolds were fabricated to rebuild SBDs using an extraordinary blend of cockle shells (CaCo3) nanoparticles (CCN), gelatin, dextran and dextrin to structure an ideal bone scaffold with adequate degradation rate using the Freeze Drying Method (FDM) and labeled as 5211, 5400, 6211, 6300, 7101, 7200 and 8100...
July 2017: Biochemistry and Biophysics Reports
https://www.readbyqxmd.com/read/28951604/identification-of-a-novel-class-of-small-compounds-with-anti-tuberculosis-activity-by-in-silico-structure-based-drug-screening
#19
COMPARATIVE STUDY
Junichi Taira, Koji Morita, Shotaro Kawashima, Tomohiro Umei, Hiroki Baba, Taira Maruoka, Hideyuki Komatsu, Hiroshi Sakamoto, James C Sacchettini, Shunsuke Aoki
The enzymes responsible for biotin biosynthesis in mycobacteria have been considered as potential drug targets owing to the important role in infection and cell survival that the biotin synthetic pathway plays in Mycobacterium tuberculosis. Among the enzymes that comprise mycobacterium biotin biosynthesis systems, 7,8-diaminopelargonic acid synthase (DAPAS) plays an essential role during the stationary phase in bacterial growth. In this study, compounds that inhibit mycobacterial DAPAS were screened in the virtual chemical library using an in silico structure-based drug screening (SBDS) technique, and the antimycobacterial activity of the selected compounds was validated experimentally...
November 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28942353/molecular-basis-of-the-human-ribosomopathy-shwachman-diamond-syndrome
#20
REVIEW
Alan J Warren
Mutations that target the ubiquitous process of ribosome assembly paradoxically cause diverse tissue-specific disorders (ribosomopathies) that are often associated with an increased risk of cancer. Ribosomes are the essential macromolecular machines that read the genetic code in all cells in all kingdoms of life. Following pre-assembly in the nucleus, precursors of the large 60S and small 40S ribosomal subunits are exported to the cytoplasm where the final steps in maturation are completed. Here, I review the recent insights into the conserved mechanisms of ribosome assembly that have come from functional characterisation of the genes mutated in human ribosomopathies...
January 2018: Advances in Biological Regulation
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