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https://www.readbyqxmd.com/read/29142881/smear-layer-removal-by-different-chemical-solutions-used-with-or-without-ultrasonic-activation-after-post-preparation
#1
Daniel Poletto, Ana Claudia Poletto, Andressa Cavalaro, Ricardo Machado, Leopoldo Cosme-Silva, Cássia Cilene Dezan Garbelini, Márcio Grama Hoeppner
Objectives: This study evaluated smear layer removal by different chemical solutions used with or without ultrasonic activation after post preparation. Materials and Methods: Forty-five extracted uniradicular human mandibular premolars with single canals were treated endodontically. The cervical and middle thirds of the fillings were then removed, and the specimens were divided into 9 groups: G1, saline solution (NaCl); G2, 2.5% sodium hypochlorite (NaOCl); G3, 2% chlorhexidine (CHX); G4, 11...
November 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29137593/central-pontine-myelinolysis-after-living-donor-liver-transplant-a-report-of-2-cases
#2
Ya-Lan Hsu, Chia-En Hsieh, Kuo-Hua Lin, Chen-Te Chou, Ping-Yi Lin, Su-Han Wang, Yao-Li Chen
Here, we present 2 patients who developed central pontine myelinolysis after living-donor liver transplant. Both patients had abnormal sodium level before living-donor liver transplant. Patient 1 presented with severe hyponatremia on admission. After administration of 3% saline, her sodium level during the first 24 hours was kept at 100 mEq/L and then increased to 116 mEq/L during the next 24 hours. The level increased 5.8 mEq/L during the 4- to 5-hour transplant procedure. Patient 2 was admitted to the hospital with an unprovoked seizure...
November 15, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29136799/ratiometric-fluorescence-and-visual-imaging-detection-of-dopamine-based-on-carbon-dots-copper-nanoclusters-dual-emitting-nanohybrids
#3
Weijie He, Rijun Gui, Hui Jin, Benqian Wang, Xiangning Bu, Yongxin Fu
In this article, blue-emitting carbon dots (CDs) were prepared via hydrothermal treatment of sodium citrate and NH4HCO3, and then combined with 3-aminophenylboronic acid (APBA) to prepare APBA modified-CDs. APBA acted as the receptor of dopamine (DA). Using bovine serum albumin (BSA) as a stabilizer and N2H4·H2O as a reducing reagent, BSA-stabilized and red-emitting copper nanoclusters (CuNCs) were prepared. By carbodiimide-activated coupling, novel nanohybrids consisting of CDs and CuNCs were constructed and exhibited dual-emitting fluorescence (FL)...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29135939/bioactive-molecules-release-and-cellular-responses-of-alginate-tricalcium-phosphate-particles-hybrid-gel
#4
Dipankar Das, Sumi Bang, Shengmin Zhang, Insup Noh
In this article, a hybrid gel has been developed using sodium alginate (Alg) and α-tricalcium phosphate (α-TCP) particles through ionic crosslinking process for the application in bone tissue engineering. The effects of pH and composition of the gel on osteoblast cells (MC3T3) response and bioactive molecules release have been evaluated. At first, a slurry of Alg and α-TCP has been prepared using an ultrasonicator for the homogeneous distribution of α-TCP particles in the Alg network and to achieve adequate interfacial interaction between them...
November 14, 2017: Nanomaterials
https://www.readbyqxmd.com/read/29135605/novel-method-to-detect-corneal-lymphatic-vessels-in-vivo-by-intrastromal-injection-of-fluorescein
#5
Viet Nhat Hung Le, Yanhong Hou, Jens Horstmann, Felix Bock, Claus Cursiefen
PURPOSE: Corneal lymphatic vessels are clinically invisible because of their thin walls and clear lymph fluid. There is no easy and established method for in vivo imaging of corneal lymphatic vessels so far. In this study, we present a novel approach to visualize corneal lymphatic vessels in vivo by injecting intrastromal fluorescein sodium. METHODS: Six- to eight-week-old female BALB/c mice were used in the mouse model of suture-induced corneal neovascularization...
November 9, 2017: Cornea
https://www.readbyqxmd.com/read/29133478/clinical-relevance-of-18-f-sodium-fluoride-positron-emission-tomography-in-noninvasive-identification-of-high-risk-plaque-in-patients-with-coronary-artery-disease
#6
Joo Myung Lee, Ji-In Bang, Bon-Kwon Koo, Doyeon Hwang, Jonghanne Park, Jinlong Zhang, Tong Yaliang, Minseok Suh, Jin Chul Paeng, Yasutsugu Shiono, Takashi Kubo, Takashi Akasaka
BACKGROUND: (18)F-sodium fluoride ((18)F-NaF) positron-emission tomography has been introduced as a potential noninvasive imaging tool to identify plaques with high-risk characteristics in patients with coronary artery disease. We sought to evaluate the clinical relevance of (18)F-NaF uptake using optical coherence tomography (OCT), intravascular ultrasound (IVUS), and coronary computed tomography angiography in patients with coronary artery disease. METHODS AND RESULTS: The target population consisted of 51 prospectively enrolled patients (93 stenoses) who underwent (18)F-NaF positron-emission tomography before invasive coronary angiography...
November 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29127244/imaging-of-the-thyroid-and-parathyroid-using-a-cardiac-cadmium-zinc-telluride-camera-phantom-studies
#7
Yosuke Miyazaki, Yasuhiro Kato, Akira Imoto, Kazuki Fukuchi
Purpose: Cadmium zinc telluride (CZT) detectors have recently been introduced to the field of clinical nuclear cardiology. However, the feasibility of using them for organs other than the heart remains unclear. The aim of this study was to evaluate the potential of a cardiac CZT camera to acquire thyroid and parathyroid images. We used custom-made phantoms and the currently available standard protocols for CZT, instead of a sodium-iodine scintillation (NaI) camera. Materials and Methods: Thyroid phantoms with or without parathyroid adenomas were made from agar using radiopharmaceuticals ((99m)Tc or (123)I) and imaged using CZT and NaI cameras...
November 10, 2017: Journal of Nuclear Medicine Technology
https://www.readbyqxmd.com/read/29124069/sodium-fluorescein-guided-resection-under-the-yellow-560%C3%A2-nm-surgical-microscope-filter-in-malignant-gliomas-our-first-38-cases-experience
#8
Ningning Zhang, Hailong Tian, Dezhang Huang, Xianbing Meng, Wenqiang Guo, Chaochao Wang, Xin Yin, Hongying Zhang, Bin Jiang, Zheng He, Zhigang Wang
Objective: Sodium fluorescein (FL) had been safely used in fluorescence-guided microsurgery for imaging various brain tumors. Under the YELLOW 560 nm surgical microscope filter, low-dose FL as a fluorescent dye helps in visualization. Our study investigated the safety and efficacy of this innovative technique in malignant glioma (MG) patients. Patients and Method: 38 patients suffering from MGs confirmed by pathology underwent FL-guided resection under YELLOW 560 nm surgical microscope filter...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29123920/a-prospective-study-comparing-whole-body-skeletal-x-ray-survey-with-18f-fdg-pet-ct-18f-naf-pet-ct-and-whole-body-mri-in-the-detection-of-bone-lesions-in-multiple-myeloma-patients
#9
Eva Dyrberg, Helle W Hendel, Gina Al-Farra, Lone Balding, Vibeke B Løgager, Claus Madsen, Henrik S Thomsen
Background: For decades, the most widely used imaging technique for myeloma bone lesions has been a whole-body skeletal X-ray survey (WBXR), but newer promising imaging techniques are evolving. Purpose: To compare WBXR with the advanced imaging techniques 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT), 18F-sodium fluoride (NaF) PET/CT and whole-body magnetic resonance imaging (WB-MRI) in the detection of myeloma bone lesions...
October 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/29121597/rapid-synthesis-of-125-i-integrated-gold-nanoparticles-for-use-in-combined-neoplasm-imaging-and-targeted-radionuclide-therapy
#10
Ryan Clanton, Arnulfo Gonzalez, Sriram Shankar, Gamal Akabani
The selective delivery of radionuclides to tissues of interest remains a problematic task during treatment. The lack of tissue specificity for many therapeutics limit their efficacy by putting healthy organs and tissues at risk (e.g., side effects). Therefore, high specificity therapeutic strategies are needed to overcome these risks. The objective of this study was to use a modified citrate reduction technique to synthesize gold nanoparticles (AuNPs) containing (125)I in order to combine their unique therapeutic and diagnostic properties...
November 6, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/29119925/post-treatment-with-a-hydrogen-sulfide-donor-limits-neuronal-injury-and-modulates-potassium-voltage-gated-channel-subfamily-d-member-2-kv4-2-and-potassium-channel-interacting-protein-3-kchip3-during-transient-global-cerebral-ischemia
#11
Cheng-Ping Bai, ChenLiang Zhao, Lijuan Shen
BACKGROUND: Although the neuroprotective effect of sodium hydrosulfide (NaHS, a hydrogen sulfide donor) pretreatment has been revealed, the effect of NaHS post-conditioning remains largely unknown. OBJECTIVE: We aimed to investigate the neuroprotective effect of NaHS post-conditioning against transient global cerebral ischemia (tGCI)-induced hippocampal CA1 injury and its underlying molecular mechanism. METHODS: A tGCI rat model was established using the four-vessel occlusion method for 15 min of ischemia...
November 7, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/29119880/preparation-and-in%C3%A2-vivo-evaluation-of-a-novel-gel-based-wound-dressing-using-arginine-alginate-surface-modified-chitosan-nanofibers
#12
Mahsa Hoseinpour Najar, Mohsen Minaiyan, Azade Taheri
The development of an effective wound dressing with the ability to induce skin wound healing is a great challenge in medicine. Nanofibers are highly attractive for wound dressing preparation due to their properties such as hemostasis induction, good absorption of wound exudates, and facilitation of cell growth. Chitosan nanofibers have attracted great attention for application in wound dressings due to their accelerating effects on wound healing. In this study, arginine surface-modified chitosan nanofibers were successfully prepared by attachment of arginine molecules on the surface of chitosan nanofibers using sodium alginate through electrostatic interaction...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29116298/in-situ-effect-of-titanium-tetrafluoride-varnish-on-enamel-demineralization
#13
Adílis Kalina Alexandria, Camila Nassur, Carolina Bezerra Cavalcanti Nóbrega, Ana Maria Gondim Valença, Pedro Luiz Rosalen, Lucianne Cople Maia
The effect of a 4% titanium tetrafluoride (TiF 4 ) varnish on enamel demineralization was evaluated. Twelve volunteers participated in this double-blind, randomized crossover study. Six enamel specimens were positioned in intraoral appliances throughout four treatment stages: 4% TiF 4 varnish (experimental varnish), 5% sodium fluoride (NaF) varnish (Duraphat ® ), placebo varnish, and negative control (deionized water). After 24 h, the varnishes were removed and plaques were allowed to accumulate. A 20% sucrose solution was dripped onto enamel blocks (10x/day)...
November 6, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/29115645/combined-18f-fdg%C3%A2-pet-ct-imaging-and-a-gastric-orthotopic-xenograft-model-in-nude-mice-are-used-to-evaluate-the-efficacy-of-glycolysis-targeted-therapy
#14
Ting-An Wang, Shu-Lin Xian, Xing-Yu Guo, Xiao-Dong Zhang, Yun-Fei Lu
As discovered by Warburg 80 years ago most malignant cells rely more on glycolysis than normal cells. The high rate of glycolysis provides faster ATP production and greater lactic acid for tumor proliferation and invasion, thus indicating a potential target in anticancer therapy. Our previous studies demonstrated that 3-bromopyruvate (3-BrPA) and sodium citrate (SCT) inhibited tumor cell proliferation in vitro. However, the underlying mechanisms still warrant further investigation. In the present study, we employed the human SGC-7901 gastric cancer cell line, built an orthotopic xenograft model in nude mice, examined the treatment response by 18F-FDG PET/CT and investigated the mechanisms of 3-BrPA and SCT in vivo...
October 31, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29109767/dexamethasone-loaded-polymeric-nanoconstructs-for-monitoring-and-treating-inflammatory-bowel-disease
#15
Aeju Lee, Claudia De Mei, Miguel Fereira, Roberto Marotta, Hong Yeol Yoon, Kwangmeyung Kim, Ick Chan Kwon, Paolo Decuzzi
Corticosteroids, such as dexamethasone (DEX), are the mainstays for the treatment of moderate to severe inflammatory bowel disease (IBD). However, their relatively poor bioavailability and lack of specificity is often the origin of short and long-term adverse effects. Here, spherical polymeric nanoconstructs (SPNs) encapsulating dexamethasone are proposed for the systemic treatment of IBD. In a mouse model of colitis, the accumulation of SPNs within the inflamed intestine is firstly assessed using near infra-red fluorescent (NIRF) imaging at different stages of the disease - 5, 7 and 10 days of Dextran Sulfate Sodium (DSS) administration...
2017: Theranostics
https://www.readbyqxmd.com/read/29108572/a-cost-effective-assay-for-antioxidant-using-simple-cotton-thread-combining-paper-based-device-with-mobile-phone-detection
#16
Suphasinee Sateanchok, Sunanta Wangkarn, Chalermpong Saenjum, Kate Grudpan
A cost-effective assay for antioxidant using simple cotton thread combining paper based device with mobile phone detection has been investigated. Standard and sample solutions flow along a bunch of cotton thread treated with sodium hydroxide via microfluidic behaviors without external pumping. The analyte solution reacts with the reagents that have been immobilized on the paper strip fixed at the end of the cotton bunch. The developed platforms were used for the assays of total phenolic content and antioxidant capacity by employing Folin-Ciocalteu and 2, 2-diphenyl-1-picryhydrazyl (DPPH) respectively...
January 15, 2018: Talanta
https://www.readbyqxmd.com/read/29104741/lymph-node-imaging-in-initial-staging-of-prostate-cancer-an-overview-and-update
#17
REVIEW
Jessica G Zarzour, Sam Galgano, Jonathan McConathy, John V Thomas, Soroush Rais-Bahrami
Accurate nodal staging at the time of diagnosis of prostate cancer is crucial in determining a treatment plan for the patient. Pelvic lymph node dissection is the most reliable method, but is less than perfect and has increased morbidity. Cross sectional imaging with computed tomography (CT) and magnetic resonance imaging (MRI) are non-invasive tools that rely on morphologic characteristics such as shape and size of the lymph nodes. However, lymph nodes harboring metastatic disease may be normal sized and non-metastatic lymph nodes may be enlarged due to reactive hyperplasia...
October 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/29101050/effect-of-sio2-pva-and-glycerol-concentrations-on-chemical-and-mechanical-properties-of-alginate-based-films
#18
Manli Yang, Jinsheng Shi, Yanzhi Xia
Sodium alginate (SA)/polyvinyl alcohol (PVA)/SiO2 nanocomposite films were prepared by in situ polymerization through solution casting and solvent evaporation. The effect of different SA/PVA ratios, SiO2, and glycerol content on the mechanical properties, water content, water solubility, and water vapor permeability were studied. The nanocomposite films were characterized by Fourier transform infrared, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and thermal stability (thermogravimetric analysis/differential thermogravimetry) analyses...
October 31, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29098646/failed-back-surgery-syndrome-a-new-strategy-by-the-epidural-injection-of-mesna
#19
M Carassiti, A Di Martino, A Centonze, C C Quattrocchi, A Caldaria, F Agrò, V Denaro
PURPOSE: Evaluate the efficacy and safety of MESNA (sodium 2-mercaptoethanesulfonate) injection into the epidural space in the FBSS. METHODS: We designed a prospective phase II longitudinal study. Six consecutive patients were enrolled. Patients underwent one peridural injection per week for 3 weeks. NRS and ODI were investigated before and 48 h after injections, and at 1 week, 1 month and 2 months after the last procedures. Opioids intake is investigated before procedures and 1 week, 1 month and 3 months after the last procedures...
November 2, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/29092965/penile-mondor-s-disease-after-anterolateral-retroperitoneal-approach-for-lumbar-fracture
#20
Mauro Dobran, Roberta Benigni, Davide Nasi, Daniele Cantoro
This is a rare case of thrombosis of the dorsal vein of the penis (Mondor's disease) occurred after an anterior-lateral retroperitoneal approach for a vertebral stabilisation in thoracolumbar vertebral fracture. Potential causes are traumatism, neoplasms, excessive sexual activity or abstinence. Although penile Mondor's disease is a clinical diagnosis, ultrasound imaging is the gold standard to confirm it. In the reported case, 1 week after neurosurgical retroperitoneal procedure of vertebral stabilisation, the patient complained of a painful cord-like mass midshaft of penis...
November 1, 2017: BMJ Case Reports
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