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https://www.readbyqxmd.com/read/28814112/an-injectable-in-situ-gel-with-cubic-and-hexagonal-nanostructures-for-local-treatment-of-chronic-periodontitis
#1
Liling Mei, Yecheng Xie, Xintian Huang, Jintian Chen, Ying Huang, Bei Wang, Hui Wang, Xin Pan, Chuanbin Wu
Periodontitis is a chronic bacterial infection, and its effective treatment is dependent on the retention of antibiotics of effective concentrations at the periodontal pockets. In this study, a solution-gel based inverse lyotropic liquid crystalline (LLC) system was explored to deliver metronidazole to the periodontal pockets for local treatment of periodontitis. It was found that the metronidazole-loaded LLC precursor spontaneously transformed into gel in the presence of water in the oral cavity. The low viscosity of the precursor would allow its penetration to the rather difficult to reach infection sites, while the adhesiveness and crystalline nanostructures (inverse bicontinuous cubic Pn3m phase and inverse hexagonal phase) of the formed gel would permit its firm adhesion to the periodontal pockets...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28812090/zero-charged-catanionic-lamellar-liquid-crystals-doped-with-fullerene-c60-for-potential-applications-in-tribology
#2
Mengjun Chen, Baoyong Liu, Xiaolin Wang, Yanxu Fu, Jingcheng Hao, Hongguang Li
The formation of lamellar liquid crystals (LLCs) has been demonstrated in a few salt-free catanionic surfactant systems and their properties have been well documented. However, examples of their combination with other materials are relatively rare. Herein, a salt-free zero-charged catanionic surfactant with low chain melting temperature was prepared by mixing equimolar tetradecyltrimethylammonium oxide (TTAOH) and oleic acid (OA) in water, and its concentration-dependent aggregate transition was investigated...
August 16, 2017: Soft Matter
https://www.readbyqxmd.com/read/28800689/evaluation-of-edar-vehicle-emissions-remote-sensing-technology
#3
Karl Ropkins, Timothy H DeFries, Francis Pope, David C Green, Jim Kemper, Sandeep Kishan, Gary W Fuller, Hu Li, Jim Sidebottom, Leigh R Crilley, Louisa Kramer, William J Bloss, J Stewart Hager
Despite much work in recent years, vehicle emissions remain a significant contributor in many areas where air quality standards are under threat. Policy-makers are actively exploring options for next generation vehicle emission control and local fleet management policies, and new monitoring technologies to aid these activities. Therefore, we report here on findings from two separate but complementary blind evaluation studies of one new-to-market real-world monitoring option, HEAT LLC's Emission Detection And Reporting system or EDAR, an above-road open path instrument that uses Differential Absorption LIDAR to provide a highly sensitive and selective measure of passing vehicle emissions...
August 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28774580/advancing-imaging-technologies-for-patients-with-spinal-pain-with-a-focus-on-whiplash-injury
#4
James M Elliott, Mark J Hancock, Rebecca J Crawford, Andrew C Smith, David M Walton
BACKGROUND CONTEXT: Radiological observations of soft-tissue changes that may relate to clinical symptoms in patients with traumatic and non-traumatic spinal disorders are highly controversial. Studies are often of poor quality and findings inconsistent. A plethora of evidence suggests some pathoanatomical findings from traditional imaging applications are common in asymptomatic participants across the life span, which further questions the diagnostic, prognostic, and theranostic value of traditional imaging...
July 31, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28769012/in-vitro-p-glycoprotein-mediated-transport-of-tadalafil-a-comparison-with-sildenafil
#5
Hiroki Higashi, Nao Watanabe, Rika Tamura, Masato Taguchi
Tadalafil and sildenafil are selective inhibitors of phosphodiesterase type 5, showing marked pharmacokinetic variability in patients with pulmonary arterial hypertension. It has been reported that sildenafil is a substrate for P-glycoprotein (P-gp), but whether tadalafil is a substrate for P-gp remains to be determined. The objective of the present study was to elucidate whether tadalafil is a substrate for P-gp. Transcellular transport of sildenafil and tadalafil (5 µM each) was examined using renal epithelial LLC-PK1 and P-gp-expressing LLC-GA5-COL150 cell monolayers...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28768661/all-trans-retinoic-acid-mediated-cytoprotection-in-renal-epithelial-cells-is-coupled-to-p-erk-activation-in-a-ros-independent-manner
#6
Jessica M Sapiro, Terrence J Monks, Serrine S Lau
Although all-trans-retinoic acid (ATRA) provides protection against a variety of conditions in vivo, particularly ischemia, the molecular mechanisms underpinning these effects remain unclear. The present studies were designed to assess potential mechanisms by which ATRA affords cytoprotection against renal toxicants in LLC-PK1 cells. Pretreatment of LLC-PK1 cells with ATRA (25 μM) for 24 hr afforded cytoprotection against oncotic cell death induced by p-aminophenol (PAP), 2-(glutathion-S-yl)hydroquinone (MGHQ), and iodoacetamide but not against apoptotic cell death induced by cisplatin...
August 2, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28765892/production-of-bfgf-monoclonal-antibody-and-its-inhibition-of-metastasis-in-lewis-lung-carcinoma
#7
Yanqing Yang, Zhenming Luo, Yiyang Qin, Yu Zhou, Longcai Gong, Jianfang Huang, Hong Wang
Basic fibroblast growth factor (bFGF) and fibroblast growth factor receptor 1 (FGFR1) are associated with drug resistance in lung cancer. In the present study, mouse monoclonal antibodies (mAb) against human bFGF, targeting the binding site of bFGF with FGFR1 were produced, and the antitumor activity and inhibition of metastasis was studied in Lewis lung carcinoma (LLC). A total of four hybridoma cell strains that stably secreted bFGF mAb were obtained. mAbE12 was selected as the most effective for use in the following studies, with a relative affinity constant of 5...
July 27, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28761581/extended-release-guaifenesin-pseudoephedrine-hydrochloride-for-symptom-relief-in-support-of-a-wait-and-see-approach-for-the-treatment-of-acute-upper-respiratory-tract-infections-a-randomized-double-blind-placebo-controlled-study
#8
Edward J Septimus, Helmut H Albrecht, Gail Solomon, Tim Shea, Eric P Guenin
BACKGROUND: Despite the well-known fact that antibiotics (AB) are not effective against viruses, many patients ask for - and all too often doctors provide - AB for treating URTIs. Over-prescribing of AB is one of the key causes for the development of bacterial resistance, which the U.S. Centers for Disease Control and Prevention (CDC) calls "one of the world's most pressing public health problems". In addition to the CDC initiated "Get Smart About Antibiotics" campaign, focused on educating doctors the public about the importance of appropriate AB use, other programs tackling this problem include the development of new treatment paradigms...
2017: Current Therapeutic Research, Clinical and Experimental
https://www.readbyqxmd.com/read/28761579/a-bayesian-approach-for-population-pharmacokinetic-modeling-of-alcohol-in-japanese-individuals
#9
Asuka Nemoto, Matsuura Masaaki, Kazue Yamaoka
BACKGROUND: Blood alcohol concentration data that were previously obtained from 34 healthy Japanese subjects with limited sampling times were reanalyzed. Characteristics of the data were that the concentrations were obtained from only the early part of the time-concentration curve. OBJECTIVE: To explore significant covariates for the population pharmacokinetic analysis of alcohol by incorporating external data using a Bayesian method, and to estimate effects of the covariates...
2017: Current Therapeutic Research, Clinical and Experimental
https://www.readbyqxmd.com/read/28755532/performance-of-cardiac-magnetic-resonance-imaging-for-diagnosis-of-myocarditis-compared-with-endomyocardial-biopsy-a-meta-analysis
#10
Shuheng Wei, Jing Fu, Liang Chen, Shujing Yu
BACKGROUND Cardiac magnetic resonance imaging (CMRI) is considered to be useful for the diagnosis of myocarditis, and the Lake Louise Criteria (LLC) has been proved to be of significance as the standard of diagnosis. However, the diagnostic performance of LLC-based CMRI for myocarditis compared with endomyocardial biopsy (EMB) has not been quantitatively evaluated in a meta-analysis. MATERIAL AND METHODS The databases PubMed, Cochrane's Library, and EMBASE were searched to identify studies on LLC and its individual components for the diagnosis of myocarditis...
July 29, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28754860/atiqctpc-targeting-mmp-9-a-key-step-to-slowing-primary-tumor-growth-and-inhibiting-metastasis-of-lewis-lung-carcinoma-in-vivo
#11
Yuji Wang, Xinyi Xu, Ce Song, Jianhui Wu, Xi Hu, Haimei Zhu, Xiaoyi Zhang, Yaonan Wang, Lin Gui, Ming Zhao, Shiqi Peng
In this study we docked (6S)-3-acetyl-4-oxo-N-(2-(3,4,5,6-zetrahydroxytetrahydro-2H-pyran-2-carboxamido)ethyl)-4,6,7,12-tetrahydroindolo[2,3-a]quinolizine-6-carbo-xamide (ATIQCTPC) towards the active site of MMP-9, and showed that ATIQCTPC was able to effectively decrease the level of MMP-9 in the serum and the primary tumor of Lewis lung carcinoma (LLC) implanted C57BL/6 mice. As a MMP-9 inhibitor, ATIQCTPC inhibited the metastasis of LLC, and slowed the growth of the primary tumor of LLC implanted C57BL/6 in mice...
July 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28749701/fish-scale-artifact-on-an-intraoral-imaging-receptor
#12
Allison Buchanan, Carla Morales, Stephen Looney, Sajitha Kalathingal
OBJECTIVES: To describe an artifact, termed the fish scale artifact, present on an intraoral imaging receptor. METHODS: Thirty brand new DIGORA Optime PSP plates (Soredex/Orion Corp., Helsinki, Finland) were imaged using the Dental Digital Quality Assurance (DDQA) radiographic phantom (Dental Imaging Consultants LLC, San Antonio, TX, USA). All PSP plates were scanned at the same spatial resolution (dpi) using the high resolution mode. Two evaluators assessed all 30 plates...
July 27, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28745652/-microcirculatory-blood-and-lymph-flow-examination-in-eyelid-skin-by-laser-doppler-flowmetry
#13
T N Safonova, N P Kintyukhina, V V Sidorov, O V Gladkova, E S Reyn
AIM: to study normal blood and lymph microcirculation of the upper and lower eyelids in different age groups. MATERIAL AND METHODS: The study included 108 volunteers (216 eyes) aged from 20 to 80 years with no signs of changes in anterior segment structures, who were grouped by age ranges (20-30 years, 31-40 years, 41-50 years, 51-60 years, 61-70 years, and 71-80 years) into 6 groups equal in gender and quantitative composition. In all volunteers, microcirculation of the upper and lower eyelids was examined by laser Doppler flowmetry (LDF) ('LASMA MC-1' peripheral blood and lymph flow analyzer and 'LASMA MC' laser diagnostic complex, LASMA LLC)...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/28744815/mammalian-diaphanous-related-formin-1-restricts-early-phases-of-influenza-a-nws-33-virus-h1n1-infection-in-llc-mk2-cells-by-affecting-cytoskeleton-dynamics
#14
Flora De Conto, Alessandra Fazzi, Sergey V Razin, Maria Cristina Arcangeletti, Maria Cristina Medici, Silvana Belletti, Carlo Chezzi, Adriana Calderaro
Viruses depend on cellular machinery to efficiently replicate. The host cytoskeleton is one of the first cellular systems hijacked by viruses in order to ensure their intracellular transport and promote the development of infection. Our previous results demonstrated that stable microfilaments and microtubules interfered with human influenza A/NWS/33 virus (H1N1) infection in semi-permissive LLC-MK2 cells. Although formins play a key role in cytoskeletal remodelling, few studies addressed a possible role of these proteins in development of viral infection...
July 25, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28738521/ginkgo-biloba-exocarp-extracts-induces-autophagy-in-lewis-lung-cancer-cells-involving-ampk-mtor-p70s6k-signaling-pathway
#15
Chenjie Cao, Dongdong Han, Ya Su, Yu Ge, Huasheng Chen, Aihua Xu
OBJECTIVES: Ginkgo biloba L. is called a living fossil plant, and could be used for the treatment of cancer thousands of years ago in China. The extracts prepared from the Ginkgo biloba exocarp (Ginkgo biloba exocarp extracts, GBEE) has a significant anti-cancer effect. Autophagy plays an important role in the occurrence and development of cancer as programmed cell death (PCD) type II. Thus it would be interesting to study the effects and mechanisms of GBEE inducing autophagy in Lewis lung cancer (LLC) cells...
September 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28737595/time-of-admission-to-the-picu-and-mortality
#16
Michael C McCrory, Michael C Spaeder, Emily W Gower, Thomas A Nakagawa, Sean L Simpson, Mary A Coleman, Peter E Morris
OBJECTIVES: To evaluate for any association between time of admission to the PICU and mortality. DESIGN: Retrospective cohort study of admissions to PICUs in the Virtual Pediatric Systems (VPS, LLC, Los Angeles, CA) database from 2009 to 2014. SETTING: One hundred and twenty-nine PICUs in the United States. PATIENTS: Patients less than 18 years old admitted to participating PICUs; excluding those post cardiac bypass...
July 21, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28731391/malpractice-litigation-following-spine-surgery
#17
Alan H Daniels, Roy Ruttiman, Adam E M Eltorai, J Mason DePasse, Bielinsky A Brea, Mark A Palumbo
OBJECTIVE Adverse events related to spine surgery sometimes lead to litigation. Few studies have evaluated the association between spine surgical complications and medical malpractice proceedings, outcomes, and awards. The aim of this study was to identify the most frequent causes of alleged malpractice in spine surgery and to gain insight into patient demographic and clinical characteristics associated with medical negligence litigation. METHODS A search for "spine surgery" spanning February 1988 to May 2015 was conducted utilizing the medicolegal research service VerdictSearch (ALM Media Properties, LLC)...
July 21, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28727092/effects-of-dried-distiller-s-grains-and-lasalocid-inclusion-on-feedlot-lamb-growth-carcass-traits-nutrient-digestibility-ruminal-fluid-volatile-fatty-acid-concentrations-and-ruminal-hydrogen-sulfide-concentration
#18
A R Crane, R R Redden, K C Swanson, B M Howard, T J Frick, K R Maddock-Carlin, C S Schauer
Our hypothesis was that increasing the inclusion level of dried distiller's grains with solubles (DDGS) to feedlot lambs would increase growth and the inclusion of lasalocid (LAS; Bovatec, Alpharma, LLC, Bridgewater, NJ) would increase ADG and G:F, while not affecting digestibility, ruminal VFA concentration, and ruminal pH. Furthermore, we hypothesized that rations containing LAS and higher levels of DDGS would cause increased ruminal hydrogen sulfide gas (HS) concentrations. Two hundred forty crossbred (Suffolk × Rambouillet) lambs (31...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28719004/development-of-new-supramolecular-lyotropic-liquid-crystals-and-their-application-as-alignment-media-for-organic-compounds
#19
Martin Leyendecker, Nils-Christopher Meyer, Christina Thiele
Most alignment media for the residual dipolar coupling (RDC) based molecular structure determination of small organic compounds consist of rod-like polymers dissolved in organic solvents or of swollen cross-linked polymer gels. So far the synthesis of polymer based alignment media is a challenging process which is often followed by a time consuming sample preparation. We propose the use of non-polymeric alignment media based on benzene-tricarboxamides (BTA) which self-assemble into rod-like supramolecules. Our newly found supramolecular lyotropic liquid crystals (LLC) are characterized for LLC properties and their suitability as alignment medium in NMR spectroscopy...
July 18, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28716636/a-simplified-clinical-prediction-rule-for-prognosticating-independent-walking-after-spinal-cord-injury-a-prospective-study-from-a-canadian-multicenter-spinal-cord-injury-registry
#20
Katharine E Hicks, Yichen Zhao, Nader Fallah, Carly Rivers, Vanessa Noonan, Tova Plashkes, Eugene K Wai, Darren M Roffey, Eve Tsai, Jerome Paquet, Najmedden Attabib, Travis Marion, Henry Ahn, Philippe Phan
BACKGROUND: Context: Traumatic spinal cord injury (SCI) is a debilitating condition with limited treatment options for neurological or functional recovery. The ability to predict the prognosis of walking post-injury with emerging prediction models could aid in rehabilitation strategies and reintegration into the community. PURPOSE: To re-validate an existing clinical prediction model for independent ambulation (van Middendorp et al. 2011) utilising acute and long-term post-injury follow-up data, and to investigate the accuracy of a simplified model using prospectively collected data from a Canadian multicenter SCI database, the Rick Hansen Spinal Cord Injury Registry (RHSCIR)...
July 14, 2017: Spine Journal: Official Journal of the North American Spine Society
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