Medical Devices & Surgical Technology Week articles from February 2009

Medical Devices & Surgical Technology Week archives from February 2009

Study investigates the cost effectiveness of spinal surgery.
February 1, 2009... Back pain affects more than 80 percent of people and costs more than $100 billion annually in the U.S. But is the surgery cost effective? A study by researchers at Rush University Medical Center suggests that for patients with spinal stenosis,...

New Analysis Estimates Numbers of Older U.S. Adults Who May Benefit From Statin Therapy.
February 1, 2009... Researchers estimate more than 11 million older Americans may be newly eligible for statin therapy if findings from a recently published large clinical trial are adopted into clinical practice guidelines, according to a new analysis of the...

Invatec Launches First Drug-Eluting Balloon Designed to Treat Atherosclerosis Below the Knee.
February 1, 2009... Invatec, a comprehensive innovator of interventional products, announced the European launch of a new peripheral balloon, the IN.PACTO Amphirion paclitaxel-eluting PTA balloon catheter. This is the first drug-eluting catheter designed...

IRIS International Receives Institutional Review Board Approval to Begin the First Stage of Its Clinical Study Using NADiA[TM] ProsVue[TM] for Identifying Post-Prostatectomy Patients with Low Risk of Prostate Cancer Recurrence.(Report)
February 1, 2009... IRIS INTERNATIONAL, INC. (NASDAQ: IRIS), announced that it has received Institutional Review Board (IRB) approval from Duke University Medical Center to immediately begin a retrospective clinical study utilizing its NADiAO ProsVueO ultra...

VA-NIH Study Offers Hope for Parkinson's Patients.
February 1, 2009... Electrical stimulation of the brain -- a treatment in which a pacemaker-like device sends pulses to electrodes implanted in the brain -- is riskier than drug therapy but may hold significant benefits for those with Parkinson's disease who no...

Data from University Hospital advance knowledge in cataract and refractive surgery.
February 1, 2009... In this recent article published in the Journal of Cataract and Refractive Surgery, scientists in Netherlands conducted a study "To analyze the position of iris-fixated phakic intraocular lenses (plOLs) using anterior segment optical coherence...

Data on cataract and refractive surgery described by J.C. Abad et al.
February 1, 2009... "Two cases of intrastromal corneal ring (Intacs, Addition Technology) implantation to treat post-laser in situ keratomileusis (LASIK) ectasia developed progressive slippage of the flap over the stromal bed, resulting in progressive flattening...

Data on cataract and refractive surgery detailed by researchers at University of Utah.
February 1, 2009... According to a study from the United States, "We report the case of a 46-year-old man with pellucid marginal degeneration who had uneventful placement of Intacs intrastromal corneal ring segments (Addition Technology) in the left eye because of...

New cataract and refractive surgery study results reported from E.A. Hermans et al.
February 1, 2009... In this recent report, researchers in Netherlands conducted a study "To develop a ciliary muscle-driven accommodating intraocular lens (IOL) that has a large and predictable range of variable power as a step toward spectacle independence....

Reports from B. Zelichowska et al highlight recent research in cataract and refractive surgery.
February 1, 2009... In this recent study, researchers in Warsaw, Poland conducted a study "To evaluate the optical and visual performance after implantation of refractive or apodized diffractive multifocal intraocular lenses (IOLs). Military Health Service...

Reports on cataract and refractive surgery findings from University of Ulsan provide new insights.
February 1, 2009... In this recent article published in the Journal of Cataract and Refractive Surgery, scientists in Seoul, South Korea conducted a study "To measure higher-order aberrations (HOAs) in the entire eye and in the internal optics (lens) in patients...

Research data from University of Heidelberg update understanding of cataract and refractive surgery.
February 1, 2009... "We describe the analysis of accommodation using wavefront measurements in phakic and pseudophakic eyes. Accommodation measurements were performed in phakic and pseuclophakic eyes using a dynamic stimulation aberrometry (I)SA) device (Optana)...

Research from Baylor College of Medicine, College of Medicine reveals new findings on cataract and refractive surgery.
February 1, 2009... In this recent study, researchers in the United States conducted a study "To evaluate the impact of residual wavefront aberrations on optical image quality induced by cyclotorsional misalignment and centration error. Cullen Eye Institute,...

Research from P.M. Phillips and co-researchers yields new findings on cataract and refractive surgery.
February 1, 2009... "We present the case of a 36-year-old Hispanic man who presented with photophobia and hand motion acuity from a lacerated cornea. Primary repair had been performed 13 years earlier," scientists in the United States report (see also Cataract and...

Research reports from S.T. Mak and co-authors provide new insights into cataract and refractive surgery.
February 1, 2009... "A 72-year-old man who had phacoemulsification with implantation of an Akreos Adapt Advanced Optics (AD) IOL in the left eye complained of blurring vision 4 months postoperatively. Multiple fine white granules were found within the IOL,"...

Researchers at University of Utah target cataract and refractive surgery.
February 1, 2009... "We analyzed an enucleated eye obtained postmortem from an 86-year-old donor who had been implanted with a hydrophilic acrylic bag-in-the-lens 4 months earlier," investigators in the United States report (see also Cataract and Refractive...

Studies from B.V. Alapure and co-researchers yield new data on cataract and refractive surgery.
February 1, 2009... In this recently published article, scientists in India conducted a study "To evaluate the level of matrix metallo proteinase-9 (MMP-9) activity in lens epithelial cells (LECs) derived from different types of cataract in patients having...

Report summarizes chromatography study findings from Hokkaido University.
February 1, 2009... According to recent research from Sapporo, Japan, "A microchip pressure-driven liquid chromatography (LC) with a packed column and an electrochemical flow cell has been developed by using polystyrene (PS) and poly(dimethylsiloxane) (PDMS). The...

Reports from Q. Ye et al highlight recent research in chromatography.
February 1, 2009... According to a study from Jiangxi, People's Republic of China, "In this work, a novel, simple and efficient method based on solid-phase microextraction (SPME) followed by gas chromatography-mass spectrometry (CC-MS) was developed to the...

Research conducted at University of Bristol has provided new information about chromatography.
February 1, 2009... "A continuous process was studied over 83.32 h using on-line high-performance liquid chromatography, involving the acquisition of 252 chromatograms. A method for analysis of these data using multivariate statistical process control on peak...

Research from F. Zhang and co-authors in the area of chromatography published.(Report)
February 1, 2009... According to recent research from Beijing, People's Republic of China, "In this study, a preparative chromatography method named preparative argentation reversed-phase high performance liquid chromatography (Ag-RP-HPLC) was developed by adding...

Research from National Chung-Hsing University in chromatography provides new insights.
February 1, 2009... According to recent research from Taichung, Taiwan, "A simple, economical and very effective method is demonstrated for simultaneous determination of 2,4-dichlorophenol, 2,4,6-trichlorophenol, 2,3,4,6-tetrachlorophenol and pentachlorophenol, in...

Recent findings in circumcision described by researchers from University of Florence.
February 1, 2009... "Male circumcision is a common surgical technique that has been performed worldwide for thousands of years for medical, social, cultural, and religious reasons. It is usually conducted in childhood in a clinical setting, but the practice of...

New contact lens findings from Wayne State University, Medical Department published.(Report)
February 1, 2009... According to a study from the United States, "This study used a rat contact lens (CL) model to test if high- versus low-Dk lens wear caused changes in (1) conjunctival Langerhans cell (LC) number or location; (2) Bcl-2 expression; and (3)...

Research from M. Guillon and colleagues provide new insights into contact lens.
February 1, 2009... According to recent research published in the journal Eye & Contact Lens - Science and Clinical Practice, "The aim of the study was to measure tear film evaporation of both contact lens wearers (CLW) and nonwearers. The hypotheses tested were...

Researchers from University of Amsterdam report details of new studies and findings in the area of contact lens.
February 1, 2009... In this recently published study, investigators in Netherlands conducted a study "To report a case of an upper eyelid mass induced by a rigid contact lens retained for more than 3 years in the eye of a patient with a general history of keloids...

Studies from R.L. Brautaset et al add new findings in the area of contact lens.(Report)
February 1, 2009... According to recent research from Stockholm, Sweden, "The purpose of this study was to investigate the prevalence of conjunctival and corneal epithelial staining in soft contact lens wearers and to see if staining could be associated with...

Reports summarize dental plaque study results from National Institutes of Health.
February 1, 2009... "Streptococci and veillonellae occur in mixed-species colonies during formation of early dental plaque. One factor hypothesized to be important in assembly of these initial communities is coaggregation (cell-cell recognition by genetically...

Findings from Moorfields Eye Hospital broaden understanding of dislocations.
February 1, 2009... According to a study from London, the United Kingdom, "Many corneal surgeons are making the transition from penetrating keratoplasty to endothelial keratoplasty techniques such as Descemet's stripping endothelial keratoplasty and Descemet's...

Findings in DNA research reported from University of Padua.
February 1, 2009... According to recent research published in the journal Proceedings of the National Academy of Sciences of the United States of America, "Ribonucleotide reductase provides deoxynucleotides for nuclear and mitochondrial (mt) DNA replication and...

New DNA research from Suzhou University outlined.
February 1, 2009... "Studies on the interaction of DNA with vitamin B-6 were carried out with a DNA-modified electrode by electrochemistry and Ultraviolet-visible spectroscopy," scientists in Suzhou, People's Republic of China report (see also DNA Research). ...

Scientists at Pomona College report research in DNA research.
February 1, 2009... "A quartz crystal microbalance with dissipation monitoring (QCM-D) was used to investigate the properties and formation of a genomic mammalian DNA surface on a polycationic poly(ethylenimine) (PEI) film. We show that both single- and...

New enzyme research study findings recently were reported by A. Kawamura and co-researchers.(Report)
February 1, 2009... According to a study from Tokyo, Japan, "Prostaglandin E-2 is related to wound healing. Three different prostaglandin E synthases have been identified: microsomal prostaglandin E synthase (mPGES)-1, mPGES-2, and cytosolic prostaglandin E...

Research data from University of Kansas update understanding of enzyme research.(Report)
February 1, 2009... "Phosphorylase kinase (PhK) regulates glycogenolysis through its Ca2+-dependent phosphorylation and activation of glycogen phosphorylase. The activity of PhK increases dramatically as the pH is raised from 6.8 to 8.2 (denoted as up arrow pH),...

Research from Beijing University of Technology has provided new data on enzyme research.
February 1, 2009... "Primary Cultured rat aortic vascular smooth muscle cells (VSMCs) were exposed to different intensities of low-frequency electromagnetic fields (LFEMFs) at 20, 40, and 60 mT for different time periods (10, 20, and 30 minutes)," scientists...

Research on Escherichia coli reported by scientists at Loyola University.
February 1, 2009... According to recent research published in the Febs Journal, "An active site aspartate residue, Asp97, in the methionine aminopeptidase (MetAPs) from Escherichia coli (EcMetAP-I) was mutated to alanine, glutamate, and asparagine. Asp97 is the...

Research data from J. Lee and colleagues update understanding of germinoma.(Report)
February 1, 2009... According to recent research from Seoul, South Korea, "Some basal ganglia germinomas are difficult to diagnose in early stage of disease due to vague initial presentation without discernable mass lesion on brain imaging. We performed this study...

Research on keratoconus discussed by S.B. Koenig and co-researchers.
February 1, 2009... According to recent research from the United States, "The observational case describes bilateral recurrent keratoconus in corneal transplants performed in a patient with self-induced keratoconus secondary to compulsive eye rubbing." ...

Study results from University of Houston broaden understanding of keratoconus.
February 1, 2009... In this recent report, researchers in the United States conducted a study "To examine whether custom wavefront-guided soft contact lenses provide visual and optical performance equivalent to habitual gas permeable (GP) corrections in three...

New laryngoscopy findings from M.A. Malik and co-authors described.
February 1, 2009... "The Pentax Airwayscope (R), the Glidescope (R), and the Truview EVO2 (R) constitute three novel laryngoscopes that facilitate visualization of the vocal cords without alignment of the oral, pharyngeal, and tracheal axes. We compared these...

Researchers from Medical University of Warsaw detail new studies and findings in the area of life sciences.
February 1, 2009... According to recent research from Warsaw, Poland, "A sterile environment is one of the basic elements of in vitro cell culture. When choosing an appropriate sterilisation method, the possibility that the physical and chemical properties of the...

Data from Fuzhou University provide new insights into liquid chromatography.
February 1, 2009... According to a study from Fuzhou, People's Republic of China, "A novel porous polymethacrylate-based monolithic column by in situ copolymerization of 3-sulfopropyl methacrylate (SPMA) and pentaerythritol triacrylate in a binary porogenic...

New magnetic resonance data have been reported by S.M. Erturk and co-authors.
February 1, 2009... In this recent report, researchers in Istanbul, Turkey conducted a study "To evaluate the impact of parallel imaging (sensitivity encoding [SENSE] technique) on diffusion-weighted (DW) magnetic resonance imaging, compare DW imaging techniques...

Researchers' work from Arizona State University focuses on magnetic resonance.
February 1, 2009... According to recent research from the United States, "The influence of the protein environment on the primary electron donor, P, a bacteriochlorophyll a dimer, of reaction centers from Rhodobacter sphaeroides, has been investigated using...

New mass spectrometry research from University of Bologna outlined.
February 1, 2009... "The level of bound hydroxycinnamic acid was determined by spectrophotometry (as total hydroxycinnamic compounds and free-radical-scavenging activity) and reversed-phase high-performance chromatography (RP-HPLC) coupled to mass spectrometry...

Researchers from University of Urbino publish new studies and findings in the area of mass spectrometry.
February 1, 2009... According to a study from Urbino, Italy, "A major limitation in quantitative analysis with electrospray ionization mass spectrometry (ESI-MS) is represented by the so-called matrix effects in which the matrix coextracted with the analytes can...

Investigators at Christian Medical College, Medical College zero in on meningioma.
February 1, 2009... According to a study from Vellore, India, "A 6-year-old boy presented with seizures. Computed tomography and magnetic resonance imaging showed a large enhancing mass in the left temporo-parietal region." "He underwent left temporo-parietal...

Researchers at Mayo Clinic target microscopy.
February 1, 2009... In this recently published study, investigators in the United States conducted a study "To compare subbasal nerve densities estimated from images recorded by the tandem scanning and the ConfoScan 4 confocal microscopes. Confocal microscopy was...

Data on orthodontics discussed by R.P. Martins and colleagues.(Report)
February 1, 2009... "The purpose of this study was to differentiate the dentoalveolar and skeletal effects to better understand orthodontic treatment. We evaluated the treatment changes associated with the bionator and the removable headgear splint (RHS),"...

New orthodontics study findings have been published by scientists at University of Connecticut.(Report)
February 1, 2009... "This study was conducted to determine the efficiency of mini-implants as intraoral anchorage units for en-masse retraction of the 6 maxillary anterior teeth when the first premolars are extracted compared with conventional methods of anchorage...

New orthodontics study findings recently were published by A. Chow and co-researchers.
February 1, 2009... According to a study from the United States, "Distraction osteogenesis has gained popularity because of the hypothesized concurrent soft-tissue expansion, which is believed to reduce postoperative relapse. Although many articles describe the...

Research from Selcuk University reveals new findings on orthodontics.(Report)
February 1, 2009... According to a study from Konya, Turkey, "The aim of this study was to evaluate the biomechanical effects of chincup treatment by using a 3-dimensional finite element model. Three-dimensional models of the mandible and the temporomandibular...

Research results from Peking University update knowledge of orthodontics.(Report)
February 1, 2009... According to a study from Beijing, People's Republic of China, "The purpose of this study was to establish a quantitative cervical vertebral maturation (CVM) system for adolescents with normal occlusion. Mixed longitudinal data were used." ...

Researchers from University of Texas provide details of new studies and findings in the area of orthodontics.
February 1, 2009... According to recent research from the United States, "The developing face is of interest to orthodontists, especially if orthodontic treatment can influence the outcome of facial growth. New 3-dimensional (3D) modalities have enabled clinicians...

Studies from Radboud University add new findings in the area of orthodontics.
February 1, 2009... "Since 1915, various researchers have tried to make a 3-dimensional (3D) model of the complete face, with the dentition in the anatomically correct position. This was a difficult and time-consuming process," scientists in Netherlands report...

Studies from T. Ishii et al add new findings in the area of orthodontics.(Report)
February 1, 2009... "The objective of this study was to elucidate the influence of extraoral lateral force loading of the mandible on mandibular development. Thirty growing Wistar rats were divided into 3 groups: control, sham, and experimental," scientists in...

Studies from University of Kentucky provide new data on orthodontics.
February 1, 2009... According to a study from the United States, "External apical root resorption (EARR) is an unwanted sequelae of orthodontic treatment. Genetic factors account for approximately 64% of the EARR variation in humans." "Inbred mice offer a...

Studies from University of Tennessee provide new data on orthodontics.(Report)
February 1, 2009... "There are numerous epidemiologic studies of hypodontia, but most focus on white populations that, because of small teeth and slow development, might not represent the status of other peoples. The purpose of this study was to contrast the...

Studies from X.H. Bu et al in the area of orthodontics described.(Report)
February 1, 2009... "The aim of this study was to compare the dental arch sizes in a group of oligodontia patients with a group of age- and sex-matched untreated Class I control patients. Dental casts were measured of 50 oligodontia patients and 50 untreated Class...

Study findings from Hebrew University, Medical Department provide new insights into orthodontics.
February 1, 2009... According to recent research published in the American Journal of Orthodontics and Dentofacial Orthopedics, "There are 2 major drawbacks to the classic orthodontic-surgical approach for resolution of impacted teeth in adults: appearance and...

Research from Y.H. Chen and co-researchers yields new findings on osteoarthritis.
February 1, 2009... In this recently published article, scientists in the United States conducted a study "To determine the prevalence of atraumatic lateral collateral ligament complex (LCLC) abnormalities by magnetic resonance imaging (MRI) in patients with...

Findings from I.T. Jackson et al in osteotomy reported.
February 1, 2009... "The maxillary swing procedure provides an excellent approach to the anterior skull base region and to the clivus," researchers in the United States report (see also Osteotomy). "The osteotomy should not be standard; it should vary with the...

Reports by S. Wittmeier and co-researchers describe recent advances in pacemakers.
February 1, 2009... According to recent research published in the journal Proceedings of the National Academy of Sciences of the United States of America, "Inspiratory and expiratory rhythms in mammals are thought to be generated by pacemaker-like neurons in 2...

New paramyxovirus study findings have been reported by scientists at University of Wisconsin, Medical Department.(Report)
February 1, 2009... According to recent research from the United States, "The opportunistic pathogen Haemophilus parainfluenzae is a gram-negative bacterium found in the oropharynx of humans. Haemophilus parainfluenzae is a member of the Pasteurellaceae family in...

New polymerase chain reaction study findings recently were published by S. Sembon and co-researchers.(Report)
February 1, 2009... According to recent research from Tsukuba, Japan, "The amelogenin (AMEL) gene exists on both sex chromosomes of various mammalian species and the length and sequence of the noncoding regions differ between the two chromosome-specific alleles....

New findings from L. Bolton and co-researchers in the area of pressure ulcer described.
February 1, 2009... According to a study from the United States, "Healthcare professionals need evidence-based strategies and guidelines for care to optimize pressure ulcer prevention and management Differences among pressure ulcer guidelines confuse caregivers,...

Studies from F.F. Behrendt and colleagues yield new information about pulmonary emphysema.
February 1, 2009... In this recently published article, scientists in Aachen, Germany conducted a study "To evaluate the effect of different image reconstruction parameters on quantitative automated measurements of pulmonary emphysema in chest multidetector-row...

Data on spectroscopy described by J. Cornel et al.
February 1, 2009... "In this work, in situ Raman spectroscopy is applied in a quantitative manner to crystal suspensions during crystallization in order to monitor a solvent-mediated polymorph transformation without the use of a calibration model. Assuming a...

New data from K. Kovacs et al illuminate research in spectroscopy.
February 1, 2009... According to recent research from Budapest, Hungary, "Distinct chemical species of iron were investigated by Mossbauer spectroscopy during iron uptake into cucumber roots grown in unbuffered nutrient solution with or without Fe-57-citrate....

Recent findings from Zhejiang University highlight research in spectroscopy.
February 1, 2009... According to a study from Hangzhou, People's Republic of China, "Lectin affinity membranes have been receiving much attention for the separation and detection of various glycoconjugates. In this work, we present a simple and efficient method...

Research data from University of Tsukuba update understanding of spectroscopy.(Report)
February 1, 2009... According to recent research from Tsukuba, Japan, "The redox potential of Q(A) in photosystem II (PSII) is known to be lower by similar to 100 mV in the presence of phenolic herbicides compared with the presence of DCMU-type herbicides. In this...

Research in the area of spectroscopy reported from W.Z. Zhu and colleagues.(Report)
February 1, 2009... "It is difficult to predict the neurologic outcome of neonates with hypoxic-ischemic encepholopathy (HIE). Our goal was to investigate the prognostic values of magnetic resonance spectroscopy (MRS) in neonatal HIE," scientists in Wuhan,...

Researchers from University of Arizona describe findings in spectroscopy.
February 1, 2009... According to recent research from the United States, "Activation of the G protein-coupled receptor (GPCR) rhodopsin is initiated by light-induced isomerization of the retinal ligand, which triggers 2 protonation switches in the conformational...

Scientists at University of Leeds target spectroscopy.
February 1, 2009... "The inner membrane of Escherichia coli, overexpressing an ubiquinol oxidase, cytochrome bo(3) (cbo(3)), was ''tethered'' in a planar configuration to a gold electrode. Electron transfer to cbo(3) was achieved via native ubiquinol-8 or added...

Study findings from University of Regensburg broaden understanding of spectroscopy.
February 1, 2009... According to a study from Regensburg, Germany, "Two-dimensional (2D) nuclear magnetic resonance (NMR) spectroscopy is a fairly novel method for the quantification of metabolites in biological fluids and tissue extracts. We show in this...

Studies from Royal Adelaide Hospital have provided new information about surgery.(Report)
February 1, 2009... "Heuristics are rules of thumb. Rarely described in surgical or other publications, they are an essential part of safe and expert performance," investigators in Adelaide, Australia report (see also Surgery). "This study translates such...

Research from Lund University has provided new information about telomerase.
February 1, 2009... According to a study from Malmo, Sweden, "Context.-We previously found telomere repeat amplification protocol (TRAP) in situ helpful in the diagnosis of malignancy in effusions, whereas varying sensitivities and specificities for malignancy...

Findings from Royal Melbourne Institute of Technology in chromatography reported.
February 1, 2009... Fresh data on chromatography are presented in the report 'Application of comprehensive two-dimensional gas chromatography to sterols analysis.' According to a study from Melbourne, Australia, "The applicability of comprehensive two-dimensional...

Investigators at University of La Laguna publish new data on chromatography.
February 1, 2009... Scientists discuss in 'Coupling the extraction efficiency of imidazolium-based ionic liquid aggregates with solid-phase microextraction-gas chromatography-mass spectrometry. Application to polycyclic aromatic hydrocarbons in a certified...

New chromatography findings from Hong Kong Baptist University, Department of Chemistry described.
February 1, 2009... Current study results from the report, 'On-line flow injection-cloud point preconcentration of polycyclic aromatic hydrocarbons coupled with high-performance liquid chromatography,' have been published. "Cloud point methodology has been used to...

Recent findings from University of Cordoba, Department of Analytical Chemistry highlight research in chromatography.
February 1, 2009... A report, 'Evaluation of a new miniaturized ion mobility spectrometer and its coupling to fast gas chromatography multicapillary columns,' is newly published data in Journal of Chromatography A. "A new miniaturized ion mobility spectrometer...

Report summarizes chromatography study findings from G. Allegrone and co-researchers.
February 1, 2009... A new study, 'Development and validation of a solid-phase extraction and gas chromatography-tandem mass spectrometry method for the determination of isopropyl-9H-thioxanthen-9-one in carton packaged milk,' is now available. According to recent...

Reports from M. Suarez et al highlight recent research in chromatography.(Report)
February 1, 2009... Research findings, 'Improved liquid chromatography tandem mass spectrometry method for the determination of phenolic compounds in virgin olive oil,' are discussed in a new report. According to a study from Spain, "An improved liquid...

Reports summarize chromatography study results from S. Seccia and co-researchers.(Report)
February 1, 2009... Data detailed in 'Determination of neonicotinoid insecticides residues in bovine milk samples by solid-phase extraction clean-up and liquid chromatography with diode-array detection' have been presented. According to a study from Naples, Italy,...