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https://www.readbyqxmd.com/read/29792318/condensed-tannin-reacts-with-so2-during-wine-aging-yielding-flavan-3-ol-sulfonates
#1
Lingjun Ma, Aude Annie Watrelot, Bennett Addison, Andrew L Waterhouse
Numerous monomeric and oligomeric flavanol sulfonation products were observed in 10 wines. Levels of 0.85-20.06 mg/L and 0-14.72 mg/L were quantified for two monomeric sulfonated flavan-3-ols, and surprisingly, were generally higher than the well-known native flavan-3-ol monomers. Increasing SO2 levels during wine aging increased the sulfonate modified flavan-3-ol monomers and dimers along with higher concentrations of native monomers. The results indicate that >10% of SO2 is reacting with the C4 carbocation, formed from acid cleavage of the interflavan bond, perhaps by a bimolecular SN2 type reaction, and as a reducing agent...
May 24, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29784461/stability-and-reactivity-of-%C3%AE-%C3%AE-ptms-silane-in-some-commercial-primer-and-adhesive-formulations
#2
Maria Dimitriadi, Angeliki Panagiotopoulou, Maria Pelecanou, Konstantina Yannakopoulou, George Eliades
OBJECTIVES: To evaluate the stability and reactivity of γ-methacryloxypropyl trimethoxysilane (MPTMS) in commercially available primers and adhesives. METHODS: Four representative primer formulations [Calibra Silane Coupling Agent/Dentsply (CLB), G-Multi Primer/GC (GMP), Kerr Silane Primer/Kerr (KSP), Monobond Plus/Ivoclar Vivadent (MBP)] and a universal adhesive [Scotchbond Universal/3M ESPE (SBU)] containing MPTMS were analyzed spectroscopically. For the stability study, the silanol content was evaluated in bulk solutions as received (reference-RE) and after aging (AG, 48°C/1month) by 1 H, 13 C, 31 P NMR and in fresh films by transmission FTIR analysis (TIR, films applied on Ge windows after solvent evaporation)...
May 18, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29782597/low-dose-radiation-18f-fluoride-pet-ct-in-the-assessment-of-unilateral-condylar-hyperplasia-of-the-mandible-preliminary-results-of-a-single-centre-experience
#3
G M Lima, S Diodato, E Costabile, G Cicoria, S Civollani, C Marchetti, P L Guidalotti, C Pettinato, C Nanni, S Fanti
Background: Unilateral condylar hyperplasia (UCH) of the mandible, or Hypercondylia, is a pathological condition that determines an abnormal growth of the affected condyle.Bone SPECT with Tc99m-diphosphonates is a successful tool in the diagnosis of UCH. EANM guidelines also suggest the use of 18F-NaF PET/CT, though it leads to a higher radiation exposure. Aim: As UCH patients are young, we aimed to develop a low dose 18F-Fluoride PET/CT protocol and compare it to a standard injected activity scan, to assess if the image quality remains unchanged...
2018: European journal of hybrid imaging
https://www.readbyqxmd.com/read/29778807/-18-f-fluoride-pet-ct-and-99m-tc-mdp-spect-ct-can-detect-bone-cancer-at-early-stage-in-rodents
#4
Christiano R R Alves, Daniele de P Faria, Camila de G Carneiro, Alexandre T Garcez, Vanessa P Gutierrez, Willian das Neves, Ney R de Almeida, Yara Cury, Roger Chammas, Patricia C Brum
Noninvasive imaging using positron emission tomography/computed tomography (PET/CT) and single photon emission computed tomography/computed tomography (SPECT/CT) are considered revolutionized approaches to detect bone cancer. Both PET/CT and SPECT/CT technologies have advanced to permit miniaturization, which has provided the advantage of including animals as their own controls in longitudinal studies. The present study was designed to evaluate the potential of PET/CT and SPECT/CT as research tools to detect bone cancer in rats...
May 17, 2018: Life Sciences
https://www.readbyqxmd.com/read/29770693/vine-shoot-tannins-effect-of-post-pruning-storage-and-toasting-treatment
#5
Cristina Cebrían-Tarancon, Rosario Sanchez-Gomez, Sergio Gómez-Alonso, Isidro Hermosin-Gutierrez, Adela Mena-Morales, Esteban García-Romero, M Rosario Salinas, Amaya Zalacain
For first time vine-shoot tannin composition was carried out by means of HPLC-DAD-ESI-MS/MS. Two vine-shoot cultivars (Airén and Cencibel) with different post-pruning storage time and submitted to a toasting process, were assayed. There was no trace of gallotannins nor ellagitannins, but a high proanthocyanidins content and a mean degree of polymerization (mDP) close to 3 was characterized. The higher concentration of proanthocyanidins corresponded to Airén after 6 months post-pruning storage and at 3 months for Cencibel...
May 17, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29768523/extracellular-calcium-increases-fibroblast-growth-factor-2-gene-expression-via-extracellular-signal-regulated-kinase-1-2-and-protein-kinase-a-signaling-in-mouse-dental-papilla-cells
#6
Sousuke Kanaya, Binlu Xiao, Yukihiko Sakisaka, Mizuki Suto, Kentaro Maruyama, Masahiro Saito, Eiji Nemoto
We previously reported that elevated extracellular calcium (Ca2+) levels increase bone morphogenetic protein 2 expression in human dental pulp (hDP) cells. However, it is unknown whether extracellular Ca2+ affects the expression of other growth factors such as fibroblast growth factor 2 (FGF2). The present study aimed to examine the effect of extracellular Ca2+ on FGF2 gene expression in hDP and immortalized mouse dental papilla (mDP) cells. Cells were stimulated with 10 mM CaCl2 in the presence or absence of cell signaling inhibitors...
May 14, 2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29765899/the-effect-of-continuous-application-of-mdp-containing-primer-and-luting-resin-cement-on-bond-strength-to-tribochemical-silica-coated-y-tzp
#7
Myung-Jin Lim, Mi-Kyung Yu, Kwang-Won Lee
Objectives: This study investigated the effect of continuous application of 10-methacryloyloxydecyldihydrogen phosphate (MDP)-containing primer and luting resin cement on bond strength to tribochemical silica-coated yttria-stabilized tetragonal zirconia polycrystal (Y-TZP). Materials and Methods: Forty bovine teeth and Y-TZP specimens were prepared. The dentin specimens were embedded in molds, with one side of the dentin exposed for cementation with the zirconia specimen...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29762237/growth-plate-suppression-in-an-adolescent-patient-with-acute-lymphoblastic-leukemia-after-treatment
#8
Ekaterina Tiktinsky, Daniel Levin, Sophia Lantsberg, Joseph Kapelushnik
Osteotoxic effect is a common adverse effect of chemotherapy for childhood acute lymphoblastic leukemia. The pathophysiology of impaired bone growth is multifactorial and can affect both osteoblast and osteoclast function. Significant contribution in affecting skeletal metabolism belongs to high-dose corticosteroid treatment. We present the case of a 12-year-old adolescent girl who was treated for high-risk pro-B acute lymphoblastic leukemia. The Tc-MDP bone scan, as a sensitive indicator of osteoblastic activity, shows that growth plate inhibition after intensive treatment may be temporary and reversible...
May 14, 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29761972/-progress-of-quantitative-measurement-of-bone-using-99m-tc-methylene-diphosphonate-in-osteoporosis
#9
REVIEW
Yutang Yao, Xiaohong Ou
As the incidence of osteoporosis (OP) is increasing year by year, high morbidity and mortality caused by osteoporotic fractures have become major problems of health in China and over the world. Quantitative measurement of bone using 99m Tc-methylene diphosphonate ( 99m Tc-MDP) provides global or local information of skeletal metabolism or transformation. In this paper, we make a brief review on the quantitative measurement of bone using 99m Tc-MDP and expect to provide guidance for clinical diagnosis and treatment...
October 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29743385/formation-of-chemical-bonds-on-zirconia-surfaces-with-acidic-functional-monomers
#10
Saiji Shimoe, Isao Hirata, Mai Otaku, Hideo Matsumura, Koichi Kato, Takahiro Satoda
We investigated the chemical interaction between zirconia surfaces and functional monomers using X-ray photoelectron spectroscopy (XPS). Two types of zirconia disks cleaned with piranha solution were treated with one of two phosphate primers (Alloy Primer, Clearfil Ceramic Primer) or a carboxylic primer (Super-Bond C&B Monomer), and rinsed 3 times with acetone. XPS analysis revealed that phosphorus was incorporated into zirconia when the surface was treated with a primer containing phosphate monomer (10-methacryloyloxydecyl dihydrogen phosphate; MDP)...
May 10, 2018: Journal of Oral Science
https://www.readbyqxmd.com/read/29742594/capillary-hemangioma-as-an-unusual-cause-of-doughnut-sign-on-bone-scan
#11
Omar Q Samarah, Mohammad I Tayyem, Nisreen Abu Shahin, Ghadeer AlMuhaisen, Malik E Juweid
A 28-year-old woman presented with a mass in her right leg, which, on plain radiograph, appeared as a lytic lesion in the mid-shaft of the tibia with cortical thinning but without periosteal reaction. Tc-MDP 3-phase bone scan demonstrated intense uptake in the periphery of the mass with a photopenic center, the so-called doughnut sign. Histopathology revealed a capillary hemangioma. This case demonstrates that the doughnut sign on bone scan can be caused by capillary hemangioma in addition to other reported bone pathologies, including aneurysmal bone cyst, giant cell tumor, and telangiectatic osteosarcoma...
May 7, 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29732031/is-99m-tc-methylene-diphosphonate-bone-scintigraphy-a-sensitive-method-for-detecting-bone-lesions-in-multiple-myeloma
#12
Mohsen Vakili Sadeghi, Sadegh Sedaghat
Background: Bone lesion in multiple myeloma (MM) is most commonly presented as a lytic lesion in this disease. Determination of extent of bone lesions in MM is necessary to follow-up the patients. Whole body bone scan with 99m, Tc-methylene diphosphonate (MDP) has a lower sensitivity than other modalities. Methods: From the patients with MM admitted to Ayatollah Rouhani Hospital of Babol-Iran from 2009 to 2015, who had undergone whole body bone scan during diagnostic process, were entered into the study...
2018: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/29731486/nmr-study-on-the-demineralization-mechanism-of-the-enamel-and-dentin-surfaces-in-mdp-based-all-in-one-adhesive
#13
Kou Fujita-Nakajima, Naoko Aoki-Tabei, Akishi Arita, Norihiro Nishiyama
The acidic monomers utilized in all-in-one adhesives play a key role in the enamel and dentin bonding performance. The purpose of this study is to investigate the mechanism by which 10-methacryloyloxydecyl dihydrogen phosphate (MDP) demineralizes the enamel and dentin surfaces prepared by a diamond bur in three types of experimental MDP-based all-in-one (EX) adhesives containing different amounts of water (46.6, 93.2 and 208.1 mg/g). The enamel and dentin reactants of EX adhesives were analyzed using solidstate phosphorous-31 nuclear magnetic resonance and X-ray diffraction...
May 2, 2018: Dental Materials Journal
https://www.readbyqxmd.com/read/29731485/effect-of-the-concentration-of-water-in-an-mdp-based-all-in-one-adhesive-on-the-efficacy-of-smear-layer-removal-and-on-dentin-bonding-performance
#14
Masahiro Teshima
The effects of the water concentration in an experimental 10-methacryloyloxydecyl dihydrogen phosphate (MDP)-based all-in-one (EX) adhesive were examined on the ability of MDP to remove the smear layer from the ground dentin surface and on the dentin bonding performance. Four types of EX adhesives were prepared by varying the amount of water (46.6, 93.2, 149.8 and 208.1 mg/g), but the MDP concentration was kept a constant at 49.9 mg/g. Scanning electron microscopy and bond strength measurements were performed on the dentin surface demineralized by each EX adhesive...
May 2, 2018: Dental Materials Journal
https://www.readbyqxmd.com/read/29725150/altered-99m-tc-tc-mdp-biodistribution-from-neutron-activation-sourced-99-mo
#15
Sandor Demeter, Roman Szweda, Judy Patterson, Marine Grigoryan
Given potential worldwide shortages of fission sourced 99 Mo/99m Tc medical isotopes there is increasing interest in alternate production strategies. A neutron activated 99 Mo source was utilized in a single center phase III open label study comparing 99m Tc, as 99m Tc Methylene Diphosphonate ([99m Tc]Tc-MDP), obtained from solvent generator separation of neutron activation produced 99 Mo, versus nuclear reactor produced 99 Mo (e.g., fission sourced) in oncology patients for which an [99m Tc]Tc-MDP bone scan would normally have been indicated...
2018: Journal of Radioanalytical and Nuclear Chemistry
https://www.readbyqxmd.com/read/29723492/microbial-host-interactions-and-impaired-wound-healing-in-mice-and-humans-defining-a-role-for-bd14-and-nod2
#16
Helen Williams, Laura Campbell, Rachel A Crompton, Gurdeep Singh, Brian J McHugh, Donald J Davidson, Andrew J McBain, Sheena M Cruickshank, Matthew J Hardman
Chronic wounds cause significant patient morbidity and mortality. A key factor in their etiology is microbial infection, yet skin host-microbiota interactions during wound repair remain poorly understood. Microbiome profiles of non-infected human chronic wounds are associated with subsequent healing outcome. Furthermore, poor clinical healing outcome was associated with increased local expression of the pattern recognition receptor NOD2. To investigate NOD2 function in the context of cutaneous healing, we treated mice with the NOD2 ligand muramyl dipeptide (MDP) and analyzed wound repair parameters and expression of anti-microbial peptides...
April 30, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29722266/chemical-mediated-digestion-an-alternative-realm-for-middle-down-proteomics
#17
Kristina Srzentić, Konstantin O Zhurov, Anna A Lobas, Gennady Nikitin, Luca Fornelli, Mikhail V Gorshkov, Yury O Tsybin
Protein digestion in mass spectrometry (MS)-based bottom-up proteomics targets mainly lysine and arginine residues, yielding primarily 0.6-3 kDa peptides for the proteomes of organisms of all major kingdoms. Recent advances in MS technology enable analysis of complex mixtures of increasingly longer (>3 kDa) peptides in a high-throughput manner supporting the development of a middle-down proteomics (MDP) approach. Generating longer peptides is a paramount step in launching an MDP pipeline, but the quest for the selection of a cleaving agent that would provide the desired 3-15 kDa peptides remains open...
May 3, 2018: Journal of Proteome Research
https://www.readbyqxmd.com/read/29716740/chemical-interaction-of-glycero-phosphate-dimethacrylate-gpdm-with-hydroxyapatite-and-dentin
#18
Kumiko Yoshihara, Noriyuki Nagaoka, Satoshi Hayakawa, Takumi Okihara, Yasuhiro Yoshida, Bart Van Meerbeek
OBJECTIVES: Although the functional monomer glycero-phosphate dimethacrylate (GPDM) has since long been used in several dental adhesives and more recently in self-adhesive composite cements and restoratives, its mechanism of chemical adhesion to hydroxyapatite (HAp) is still unknown. We therefore investigated the chemical interaction of GPDM with HAp using diverse chemical analyzers and ultra-structurally characterized the interface of a GPDM-based primer formulation with dentin. METHODS: HAp particles were added to a GPDM solution for various periods, upon which they were thoroughly washed with ethanol and water prior to being air-dried...
April 28, 2018: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29710019/-parkinson-s-disease-associated-with-sapho-syndrome-a-case-report
#19
Takashi Ando, Amane Araki, Shinichi Terao, Masahisa Katsuno
A 77-year-old woman with Parkinson's disease presented with left chest pain. Physical examination revealed tenderness at her second left sternocostal joint. There was no skin rash. Chest CT revealed hyperostosis of the sternocostal joint, and cervical MRI showed vertebral osteosclerosis and osteolysis. 99mTc-MDP bone scintigraphy showed an increased activity in the sternocostal joint and vertebral column. The patient was diagnosed with SAHPO syndrome according to the diagnostic criteria. Her chest pain was relieved after oral administration of nonsteroidal anti-inflammatory drugs...
April 28, 2018: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/29704863/adherence-to-the-mediterranean-dietary-pattern-and-incidence-of-anorexia-and-bulimia-nervosa-in-women-the-sun-cohort
#20
Alessandro Leone, Miguel Ángel Martínez-González, Francisca Lahortiga-Ramos, Patricio Molero Santos, Simona Bertoli, Alberto Battezzati, Maira Bes-Rastrollo
OBJECTIVE: To our knowledge, no study has yet assessed the association between dietary patterns and incidence of eating disorders. This study aimed to assess the association between adherence to the Mediterranean dietary pattern (MDP) and incident risk of anorexia (AN) and bulimia nervosa (BN). METHODS: We conducted a prospective cohort study of 11 800 women from the Seguimiento Universidad de Navarra follow-up project. Participants were classified as having incident AN or BN if they were free of AN or BN at baseline and reported a physician-made diagnosis of AN or BN during the follow-up period...
March 21, 2018: Nutrition
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