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https://www.readbyqxmd.com/read/28437860/chronic-inhibition-of-fatty-acid-amide-hydrolase-by-urb597-produces-differential-effects-on-cardiac-performance-in-normotensive-and-hypertensive-rats
#1
Anna Pedzinska-Betiuk, Jolanta Weresa, Marek Toczek, Marta Baranowska-Kuczko, Irena Kasacka, Ewa Harasim-Symbor, Barbara Malinowska
BACKGROUND AND PURPOSE: Fatty acid amide hydrolase (FAAH) inhibitors are postulated to possess anti-hypertensive potential, because their acute injection decreases blood pressure (BP) in spontaneously hypertensive rats (SHR) partially through normalization of cardiac contractile function. Here, we examined whether the potential hypotensive effect of chronic FAAH inhibition by URB597 in hypertensive rats correlates with changes in cardiac performance. EXPERIMENTAL APPROACH: Experiments were performed using perfused hearts and left atria isolated from 8-10 week old SHR, age-matched deoxycorticosterone acetate (DOCA-salt) rats and normotensive controls chronically treated with URB597 (1 mg kg(-1) ) or vehicle...
April 24, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28437513/prevalence-of-temporomandibular-disorders-in-the-northern-finland-birth-cohort-1966
#2
Päivi Jussila, Heikki Kiviahde, Ritva Näpänkangas, Jari Päkkilä, Paula Pesonen, Kirsi Sipilä, Pertti Pirttiniemi, Aune Raustia
AIMS: To investigate the prevalence of temporomandibular disorders (TMD) in the 46-year-old cohort subjects from the Northern Finland Birth Cohort 1966 (NFBC 1966). METHODS: Altogether, 1,962 subjects (1,050 women, 912 men) participated in a clinical medical and dental examination and responded to questionnaires in 2012 to 2013. The stomatognathic examination was performed according to a modified protocol of the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD)...
April 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/28437035/the-association-between-oral-examination-findings-and-the-computed-tomographic-appearance-of-the-equine-temporomandibular-joint
#3
J L Carmalt, H Simhofer, A Bienert-Zeit, J E Rawlinson, C L Waldner
BACKGROUND: The temporomandibular joint (TMJ) forms the junction between the maxilla and mandible. Movement of the jaw and resulting masticatory forces have been extensively studied in the horse; however, less is known about the inter-relationship between this joint and oral and dental pathology. OBJECTIVES: To determine the association between specific oral and dental pathologies and anatomical variations of the TMJ imaged with computed tomography (CT) in horses with asymptomatic TMJs...
April 24, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28436567/an-ultrastructural-study-of-chondroptosis-programmed-cell-death-in-degenerative-intervertebral-discs-in%C3%A2-vivo
#4
Li-Bo Jiang, Hai-Xiao Liu, Yu-Long Zhou, Sun-Ren Sheng, Hua-Zi Xu, En-Xing Xue
Apoptosis has been regarded to mediate intervertebral disc degeneration (IDD); however, the basic question of how the apoptotic bodies are cleared in the avascular intervertebral disc without phagocytes, which are essential to apoptosis, remains to be elucidated. Our goals were to investigate the ultrastructure of nucleus pulposus (NP) cells undergoing chondroptosis, a variant of apoptotic cell death, in a rabbit annular needle-puncture model of IDD. Experimental IDD was induced by puncturing discs with a 16-G needle in New Zealand rabbits...
April 24, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28435926/lumbar-disc-herniation-presenting-with-contralateral-symptoms-a-case-report
#5
Zhi Sheng Darren Koh, Shuxun Lin, Hwee Weng Dennis Hey
Lumbar disc herniation is common and may be symptomatic. The magnetic resonance imaging (MRI) scan is an appropriate tool to confirm the diagnosis and affected level of the spine. While a disc herniation is usually associated with ipsilateral symptoms, a few cases have been reported to present with contralateral symptoms. We report a unique case of left lumbar disc herniation at L5/S1 who presented with contralateral symptoms and was successfully treated with a right L5/S1 foraminal block. However, the patient developed concordant ipsilateral symptoms 6 weeks later and was treated with left L5/S1 microdiscectomy...
March 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/28435925/distal-junctional-failure-secondary-to-l5-vertebral-fracture-a-report-of-two-rare-cases
#6
Jiong Hao Tan, Kimberly-Anne Tan, Hwee Weng Dennis Hey, Hee-Kit Wong
Distal junctional failure (DJF) with fracture at the last instrumented vertebra is a rare occurrence. In this case report, we present two patients with L5 vertebral fracture post-instrumented fusion of the lumbar spine. The first patient is a 78-year-old female who had multi-level degenerative disc disease, spinal stenosis and degenerative scoliosis involving levels T12 to L5. She underwent instrumented posterolateral fusion (PLF) from T12 to L5, and transforaminal lumbar interbody fusion (TLIF) at L2/3 and L4/5...
March 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/28435916/feasibility-of-endoscopic-discectomy-by-inter-laminar-approach-at-a-high-volume-tertiary-public-hospital-in-a-developing-country
#7
Shardul Madhav Soman, Jayprakash Vrajlal Modi, Jimmy Chokshi
BACKGROUND: Surgical treatment for lumbar disc herniation consists of discectomy performed either open or minimally invasive techniques. Endoscopic discectomy using the tubular retractor is been increasingly used as it gives advantage of smaller incision, less tissue injury and faster recovery. The aim of this study was to check its feasibility and learning curve at a tertiary public sector hospital with a large volume load (more than 50 spine surgeries per month) with treatment provided free of cost...
March 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/28435367/-ormocer-an-innovative-technology-a-replacement-for-conventional-cements-and-veneer-a-comparative-in-vitro-analysis
#8
Vini Rajeev, Rajeev Arunachalam, Sanjna Nayar, P R Arunima, Sivadas Ganapathy, Vaishnavi Vedam
OBJECTIVE: This in vitro study was designed to assess shear bond strength (SBS) of ormocer flowable (OF) resin as a luting agent, ormocer as an indirect veneer material with portrayal of modes of failures using scanning electron microscope (SEM). MATERIALS AND METHODS: Sixty maxillary central incisors were divided into Group I, II, and III with 20 samples each based on luting cement used. They were OF, self-adhesive (SA) cement, and total etch (TE) cement. These groups were subdivided into "a" and "b" of ten each based on the type of veneering materials used...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28435359/comparative-antimicrobial-efficacy-of-selected-root-canal-irrigants-on-commonly-isolated-microorganisms-in-endodontic-infection
#9
Sandeep Dubey, Suparna Ganguly Saha, Balakrishnan Rajkumar, Tapan Kumar Dhole
OBJECTIVE: This study aims to evaluate and compare the antimicrobial efficacy of three selected root canal irrigants (BioPure MTAD, metronidazole, aztreonam) against microbes commonly isolated from polymicrobial microbiota of root canal infection. MATERIALS AND METHODS: This study was designed with four experimental groups (Group I - Bacteroides fragilis, Group II - Propionibacterium acnes, Group III - Enterococcus faecalis, Group IV - Candida albicans) based on the microbes selected for the study...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28435205/the-disc-separation-and-the-eigenvalue-distribution-of-the-schur-complement-of-nonstrictly-diagonally-dominant-matrices
#10
Cheng-Yi Zhang, Weiwei Wang, Shuanghua Luo, Jianxing Zhao
The result on the Geršgorin disc separation from the origin for strictly diagonally dominant matrices and their Schur complements in (Liu and Zhang in SIAM J. Matrix Anal. Appl. 27(3):665-674, 2005) is extended to nonstrictly diagonally dominant matrices and their Schur complements, showing that under some conditions the separation of the Schur complement of a nonstrictly diagonally dominant matrix is greater than that of the original grand matrix. As an application, the eigenvalue distribution of the Schur complement is discussed for nonstrictly diagonally dominant matrices to derive some significant conclusions...
2017: Journal of Inequalities and Applications
https://www.readbyqxmd.com/read/28434696/complete-eradication-of-biofilm-from-orthopedic-materials
#11
Jeffrey T Leary, Matthew M Werger, William H Broach, Lindsey N Shaw, Brandon G Santoni, Thomas L Bernasek, Steven T Lyons
BACKGROUND: Interest exists in finding alternatives to current management strategies in periprosthetic joint infections, which typically include a 2-stage revision with placement of an antibiotic spacer and delayed placement of a new implant. We studied the efficacy of autoclaving, ultrasonication, and mechanical scrubbing for sterilization and biofilm eradication on infected cobalt-chrome discs. METHODS: Strains of Staphylococcus aureus MRSA252 or Staphylococcus epidermidis RP62A were grown on the discs...
March 29, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28434048/clinical-and-radiological-outcomes-of-endoscopic-partial-facetectomy-for-degenerative-lumbar-foraminal-stenosis
#12
Myung Soo Youn, Jong Ki Shin, Tae Sik Goh, Jung Sub Lee
BACKGROUND: Several different techniques exist to treat degenerative lumbar foraminal stenosis. Failure to adequately decompress the lumbar foramen may lead to failed back surgery syndrome. However, wide decompression often causes spinal instabilities or may require an additional fusion surgery. The aim of this study was to report the outcomes of endoscopic partial facetectomy (EPF) performed on patients with degenerative lumbar foraminal stenosis. METHODS: Between 2012 and 2014, 25 consecutive patients (12 women and 13 men) who underwent EPF were included in the study...
April 22, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28433838/outcome-of-anterior-lumbar-interbody-fusion-a-retrospective-study-of-clinical-and-radiological-parameters
#13
H Pinson, G Hallaert, P Herregodts, K Everaert, T Couvreur, J Caemaert, J P Kalala, D Van Roost
OBJECTIVE: This study aims to critically evaluate the long-term results of stand-alone anterior lumbar interbody fusion (ALIF), without use of rhBMP-2, as a therapeutic option for symptomatic patients with degenerative disc disease (DDD). Furthermore this study intends to identify predictive parameters for anterior lumbar interbody fusion outcome. METHODS: A retrospective cohort study with additional telephone interview to obtain missing data was performed. All patients who underwent a L4-L5 and/or L5-S1 ALIF-procedure in the period between 2006 and 2011 were identified...
April 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28433788/regulation-of-human-nucleus-pulposus-cells-by-peptide-coupled-substrates
#14
Devin T Bridgen, Bailey V Fearing, Liufang Jing, Johannah Sanchez-Adams, Megan C Cohan, Farshid Guilak, Jun Chen, Lori A Setton
Nucleus pulposus (NP) cells are derived from the notochord and differ from neighboring cells of the intervertebral disc in phenotypic marker expression and morphology. Adult human NP cells lose this phenotype and morphology with age in a pattern that contributes to progressive disc degeneration and pathology. Select laminin-mimetic peptide ligands and substrate stiffnesses were examined for their ability to regulate human NP cell phenotype and biosynthesis through the expression of NP-specific markers aggrecan, N-cadherin, collagen types I and II, and GLUT1...
April 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28433710/down-regulation-of-islet-amyloid-polypeptide-expression-induces-death-of-human-annulus-fibrosus-cells-via-mitochondrial-and-death-receptor-pathways
#15
Xinghuo Wu, Kun Wang, Wenbin Hua, Shuai Li, Xianzhe Liu, Wei Liu, Yu Song, Yukun Zhang, Zengwu Shao, Cao Yang
Islet amyloid polypeptide (IAPP) exerts its biological effects by participating in the regulation of glucose metabolism and cell apoptosis. The main goal of the present study was to investigate the expression of IAPP in degenerated intervertebral disc tissue and IAPP's modulation of extracellular matrix (ECM) catabolic and anabolic genes in human AF cells. We found that the expression of IAPP, the calcitonin receptor, and receptor activity modifying protein decreased considerably in AF cells during the progression of intervertebral disc degeneration (IDD)...
April 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28433445/parapapillary-choroidal-microvasculature-dropout-in-glaucoma-a-comparison-between-optical-coherence-tomography-angiography-and-indocyanine-green-angiography
#16
Eun Ji Lee, Kyoung Min Lee, Seung Hyen Lee, Tae-Woo Kim
PURPOSE: To investigate whether the parapapillary choroidal microvasculature dropout (MvD) determined by optical coherence tomography angiography (OCTA) in glaucomatous eyes indicates a true perfusion defect and whether the MvD accurately represents the area of nonperfusion. DESIGN: Observational case series. PARTICIPANTS: Thirty primary open-angle glaucoma (POAG) patients with choroidal MvD as determined by OCTA and 13 POAG patients without this dropout...
April 19, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28433039/diffusion-in-quasi-one-dimensional-channels-a-small-system-n-p-t-transition-state-theory-for-hopping-times
#17
Sheida Ahmadi, Richard K Bowles
Particles confined to a single file, in a narrow quasi-one-dimensional channel, exhibit a dynamic crossover from single file diffusion to Fickian diffusion as the channel radius increases and the particles begin to pass each other. The long time diffusion coefficient for a system in the crossover regime can be described in terms of a hopping time, which measures the time it takes for a particle to escape the cage formed by its neighbours. In this paper, we develop a transition state theory approach to the calculation of the hopping time, using the small system isobaric-isothermal ensemble to rigorously account for the volume fluctuations associated with the size of the cage...
April 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28432852/correlation-between-expression-of-high-temperature-requirement-serine-protease-a1-htra1-in-nucleus-pulposus-and-t2-value-of-magnetic-resonance-imaging
#18
Dapeng Li, Jiawei Yue, Lu Jiang, Yonghui Huang, Jifu Sun, Yan Wu
BACKGROUND Degrading enzymes play an important role in the process of disc degeneration. The objective of this study was to investigate the correlation between the expression of high temperature requirement serine protease A1 (HtrA1) in the nucleus pulposus and the T2 value of the nucleus pulposus region in magnetic resonance imaging (MRI). MATERIAL AND METHODS Thirty-six patients who had undergone surgical excision of the nucleus pulposus were examined by MRI before surgery. Pfirrmann grading of the target intervertebral disc was performed according to the sagittal T2-weighted imaging, and the T2 value of the target nucleus pulposus was measured according to the median sagittal T2 mapping...
April 22, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28431955/the-course-of-modic-vertebral-body-changes-after-posterolateral-lumbar-fusion-on-fused-and-adjacent-levels-a-systematic-review-of-the-literature
#19
REVIEW
Stella Taylor Portella, Marcus André Acioly
According to the original description by Modic et al., the natural course of bone marrow signal abnormalities is an inexorable, progressive one, however recent evidence has demonstrated in healthy individuals and those suffering from lumbar disc herniation that the course of endplate degenerative changes is rather dynamic and sometimes regressive. The evolution of such changes in lumbar fused segments and adjacent levels is largely unknown. The literature relevant to the course of Modic changes on fused and adjacent levels, as well as its clinical correspondence in patients undergoing posterolateral lumbar fusion was collected...
April 18, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28431861/cardiac-computed-tomography-derived-myocardial-mass-at-risk-using-the-voronoi-based-segmentation-algorithm-a-histological-validation-study
#20
Seiko Ide, Satoru Sumitsuji, Osamu Yamaguchi, Yasushi Sakata
BACKGROUND: Myocardial mass at risk (MMAR) is an important predictor of adverse cardiac events in patients with ischemic heart disease. This study aims to validate the accuracy of MMAR calculated from cardiac computed tomography (CCT) data using the Voronoi-based segmentation algorithm in comparison with actual MMAR measured on ex-vivo swine hearts prepared by injecting a dye into the coronary arteries. METHODS: Fifteen extracted swine hearts had India ink injected into one of the major coronary arteries...
April 18, 2017: Journal of Cardiovascular Computed Tomography
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