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Jarkko Harju, Antti Vehkaoja, Ville Lindroos, Pekka Kumpulainen, Sasu Liuhanen, Arvi Yli-Hankala, Niku Oksala
Alterations in arterial blood oxygen saturation, heart rate (HR), and respiratory rate (RR) are strongly associated with intra-hospital cardiac arrests and resuscitations. A wireless, easy-to-use, and comfortable method for monitoring these important clinical signs would be highly useful. We investigated whether the Nellcor™ OxiMask MAX-FAST forehead sensor could provide data for vital sign measurements when located at the distal forearm instead of its intended location at the forehead to provide improved comfortability and easy placement...
October 17, 2016: Journal of Clinical Monitoring and Computing
Arvis Sulovari, Yolanda H Chen, James J Hudziak, Dawei Li
Genetic variants with extreme allele frequency differences (EAFD) may underlie some human health disparities across populations. To identify EAFD loci, we systematically analyzed and characterized 81 million genomic variants from 2504 unrelated individuals of 26 world populations (phase III of the 1000 Genomes Project). Our analyses revealed a total of 434 genes, 15 pathways, and 18 diseases and traits influenced by EAFD variants from five continental populations. They included known EAFD genes, such as LCT (lactose tolerance), SLC24A5 (skin pigmentation), and EDAR (hair morphology)...
October 3, 2016: Human Genetics
Roy S Herbst, Paul Baas, Jose L Perez-Gracia, Enriqueta Felip, Dong-Wan Kim, Ji-Youn Han, Julian Molina, Joo-Hang Kim, Catherine Dubos Arvis, Myung-Ju Ahn, Margarita Majem, Mary Jo Fidler, Veerle Surmont, Gilberto De Castro, Marcelo Garrido, Yue Shentu, Marisa Dolled-Filhart, Ellie Im, Edward B Garon
No abstract text is available yet for this article.
October 2016: Journal of Thoracic Oncology
Roy S Herbst, Paul Baas, Jose L Perez-Gracia, Enriqueta Felip, Dong-Wan Kim, Ji-Youn Han, Julian Molina, Joo-Hang Kim, Catherine Dubos Arvis, Myung-Ju Ahn, Margarita Majem, Mary Jo Fidler, Veerle Surmont, Gilberto De Castro, Marcelo Garrido, Yue Shentu, Marisa Dolled-Filhart, Ellie Im, Edward B Garon
No abstract text is available yet for this article.
October 2016: Journal of Thoracic Oncology
Arvi Freiberg, Manoop Chenchiliyan, Margus Rätsep, Kõu Timpmann
In the present work, spectral and kinetic changes accompanying the assembly of the light-harvesting 1 (LH1) complex with the reaction center (RC) complex into monomeric RC-LH1 and dimeric RC-LH1-PufX core complexes of the photosynthetic purple bacterium Rhodobacter sphaeroides are systematically studied over the temperature range of 4.5-300K. The samples were interrogated with a combination of optical absorption, hole burning, fluorescence excitation, steady state and picosecond time resolved fluorescence spectroscopy...
August 8, 2016: Biochimica et Biophysica Acta
Sanna Halonen, Kari Annala, Juho Kari, Samuli Jokinen, Aki Lumme, Kai Kronström, Arvi Yli-Hankala
Lumbar puncture is a relatively safe procedure, but some serious, even fatal, complications can occur. Needle guidance can increase puncture accuracy, decrease the number of attempts, and make the procedure easier. We tested the feasibility of a bioimpedance-based tissue-sensing technology for needle guidance in clinical use. The Bioimpedance Probe (BIP) Needle has a removable BIP stylet enabling measurement of bioimpedance spectra during the procedure. The BIP Needle is connected to a measurement device that uses tissue-classification software, and the device provides audiovisual feedback when it detects cerebrospinal fluid (CSF)...
August 4, 2016: Journal of Clinical Monitoring and Computing
Suzette Delaloge, Thomas Bachelot, François-Clément Bidard, Marc Espie, Etienne Brain, Hervé Bonnefoi, Joseph Gligorov, Florence Dalenc, Anne-Claire Hardy-Bessard, David Azria, Jean-Philippe Jacquin, Jérôme Lemonnier, William Jacot, Anthony Goncalves, Charles Coutant, Gérard Ganem, Thierry Petit, Frédérique Penault-Lorca, Marc Debled, Mario Campone, Christelle Levy, Bruno Coudert, Alain Lortholary, Laurence Venat-Bouvet, Julien Grenier, Hugues Bourgeois, Bernard Asselain, Johanna Arvis, Martine Castro, Anne Tardivon, David G Cox, Patrick Arveux, Corinne Balleyguier, Fabrice André, Roman Rouzier
Breast cancer remains a potentially lethal disease, which requires aggressive treatments and is associated with long-term consequences. Its prognosis is linked to both tumor biology and burden at diagnosis. Although treatments have allowed important improvements in prognosis over the past 20 years, breast cancer screening remains necessary. Mammographic screening allows earlier stage diagnoses and a decrease of breast cancer specific mortality. However, breast cancer screening modalities should be revised with the objective to address demonstrated limitations of mammographic screening (limited benefit, imperfect sensitivity and specificity, overdiagnoses, radiation-induced morbidity)...
September 2016: Bulletin du Cancer
Charlotte Peeters, Jan P Meier-Kolthoff, Bart Verheyde, Evie De Brandt, Vaughn S Cooper, Peter Vandamme
Partial gyrB gene sequence analysis of 17 isolates from human and environmental sources revealed 13 clusters of strains and identified them as Burkholderia glathei clade (BGC) bacteria. The taxonomic status of these clusters was examined by whole-genome sequence analysis, determination of the G+C content, whole-cell fatty acid analysis and biochemical characterization. The whole-genome sequence-based phylogeny was assessed using the Genome Blast Distance Phylogeny (GBDP) method and an extended multilocus sequence analysis (MLSA) approach...
2016: Frontiers in Microbiology
Jeffrey R Reimers, Malgorzata Biczysko, Douglas Bruce, David F Coker, Terry J Frankcombe, Hideki Hashimoto, Jürgen Hauer, Ryszard Jankowiak, Tobias Kramer, Juha Linnanto, Fikret Mamedov, Frank Müh, Margus Rätsep, Thomas Renger, Stenbjörn Styring, Jian Wan, Zhuan Wang, Zheng-Yu Wang-Otomo, Yu-Xiang Weng, Chunhong Yang, Jian-Ping Zhang, Arvi Freiberg, Elmars Krausz
While the majority of the photochemical states and pathways related to the biological capture of solar energy are now well understood and provide paradigms for artificial device design, additional low-energy states have been discovered in many systems with obscure origins and significance. However, as low-energy states are naively expected to be critical to function, these observations pose important challenges. A review of known properties of low energy states covering eight photochemical systems, and options for their interpretation, are presented...
September 2016: Biochimica et Biophysica Acta
Matthias Suhr, Franziska L Lederer, Tobias J Günther, Johannes Raff, Katrin Pollmann
Genomic analyses of Viridibacillus arvi JG-B58 that was previously isolated from heavy metal contaminated environment identified three different putative surface layer (S-layer) protein genes namely slp1, slp2, and slp3. All three genes are expressed during cultivation. At least two of the V. arvi JG-B58 S-layer proteins were visualized on the surface of living cells via atomic force microscopy (AFM). These S-layer proteins form a double layer with p4 symmetry. The S-layer proteins were isolated from the cells using two different methods...
2016: PloS One
Jonne Liimatainen, Jari Peräkylä, Kati Järvelä, Tero Sisto, Arvi Yli-Hankala, Kaisa M Hartikainen
OBJECTIVES: Aortic valve replacement (AVR) surgery is associated with potential risk to cerebral injury. On the other hand, improved cardiovascular functioning after the surgery may have positive impact on brain health. The aim of this preliminary study was to investigate the impact of AVR surgery on cognition, specifically on higher cognitive control functions, i.e. executive functions, that are typically implicated in cognitive decline due to vascular origin. METHODS: Patients (n = 16) undergoing elective AVR surgery due to aortic stenosis were recruited and their cognitive performance was assessed using a computer-based Executive Reaction Time (RT) test...
October 2016: Interactive Cardiovascular and Thoracic Surgery
Toni Pakkanen, Ilkka Virkkunen, Antti Kämäräinen, Heini Huhtala, Tom Silfvast, Janne Virta, Tarja Randell, Arvi Yli-Hankala
BACKGROUND: Traumatic brain injury (TBI) is one of the leading causes of death and permanent disability. Emergency Medical Services (EMS) personnel are often the first healthcare providers attending patients with TBI. The level of available care varies, which may have an impact on the patient's outcome. The aim of this study was to evaluate mortality and neurological outcome of TBI patients in two regions with differently structured EMS systems. METHODS: A 6-year period (2005 - 2010) observational data on pre-hospital TBI management in paramedic-staffed EMS and physician-staffed EMS systems were retrospectively analysed...
2016: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
Keunchil Park, Eng-Huat Tan, Ken O'Byrne, Li Zhang, Michael Boyer, Tony Mok, Vera Hirsh, James Chih-Hsin Yang, Ki Hyeong Lee, Shun Lu, Yuankai Shi, Sang-We Kim, Janessa Laskin, Dong-Wan Kim, Catherine Dubos Arvis, Karl Kölbeck, Scott A Laurie, Chun-Ming Tsai, Mehdi Shahidi, Miyoung Kim, Dan Massey, Victoria Zazulina, Luis Paz-Ares
BACKGROUND: The irreversible ErbB family blocker afatinib and the reversible EGFR tyrosine kinase inhibitor gefitinib are approved for first-line treatment of EGFR mutation-positive non-small-cell lung cancer (NSCLC). We aimed to compare the efficacy and safety of afatinib and gefitinib in this setting. METHODS: This multicentre, international, open-label, exploratory, randomised controlled phase 2B trial (LUX-Lung 7) was done at 64 centres in 13 countries. Treatment-naive patients with stage IIIB or IV NSCLC and a common EGFR mutation (exon 19 deletion or Leu858Arg) were randomly assigned (1:1) to receive afatinib (40 mg per day) or gefitinib (250 mg per day) until disease progression, or beyond if deemed beneficial by the investigator...
May 2016: Lancet Oncology
Arvi Jõers, Tanel Tenson
Frequent changes in nutrient availability often result in repeated cycles of bacterial growth and dormancy. The timing of growth resumption can differ among isogenic cells and delayed growth resumption can lead to antibiotic tolerant persisters. Here we describe a correlation between the timing of entry into stationary phase and resuming growth in the next period of cell proliferation. E. coli cells can follow a last in first out rule: the last ones to shut down their metabolism in the beginning of stationary phase are the first to recover in response to nutrients...
2016: Scientific Reports
Manoop Chenchiliyan, Kõu Timpmann, Erko Jalviste, Peter G Adams, C Neil Hunter, Arvi Freiberg
In the purple phototrophic bacterium Rhodobacter sphaeroides, light harvesting LH2 complexes transfer absorbed solar energy to RC-LH1-PufX core complexes, which are mainly found in the dimeric state. Many other purple phototrophs have monomeric core complexes and the basis for requiring dimeric cores is not fully established, so we analysed strains of Rba. sphaeroides that contain either native dimeric core complexes or altered monomeric cores harbouring a deletion of the first 12 residues from the N-terminus of PufX, which retains the PufX polypeptide but removes the major determinant of core complex dimerization...
June 2016: Biochimica et Biophysica Acta
Patricia Jakel, Cynthia Carsten, Arvie Carino, Melinda Braskett
Chemotherapy desensitization protocols are safe, but labor-intensive, processes that allow patients with cancer to receive medications even if they initially experienced severe hypersensitivity reactions. Part I of this column discussed the pathophysiology of hypersensitivity reactions and described the development of desensitization protocols in oncology settings. Part II incorporates the experiences of an academic medical center and provides a practical guide for the nursing care of patients undergoing chemotherapy desensitization...
April 2016: Clinical Journal of Oncology Nursing
S B Yatsyshina, M R Ageeva, N S Vorobieva, A V Valdokhina, M A Elkina, A V Gorelov, V V Maleev, V I Pokrovsky
AIM: Study prevalence of adenovirus species and serotypes that had caused acute respiratory viral infection (ARVI) in Moscow in 2004 - 2014. MATERIALS AND METHODS: Material from respiratory tract of 4731 patients with ARVI and 663 conditionally healthy children and adults was used. ARVI causative agents were detected by PCR with real-time detection using AmpliSens reagent kits (CRIE, Moscow). Membership of adenoviruses to a certain serotype was determined by sequencing of hexon gene segment...
September 2015: Zhurnal Mikrobiologii, Epidemiologii, i Immunobiologii
A A Zaitsev, O I Klochkov
AIM: To make a comparative clinical and economic evaluation of the use of the combination drug Influnet in the treatment of acute respiratory viral infections (ARVI). SUBJECTS AND METHODS: A total of 103 medical records of outpatients with uncomplicated mild and moderate ARVI were studied. There were three groups: 1) 35 patients who received therapy with Influnet; 2) 31 patients who took Rinza; 3) 34 patients who were on treatment without the combination drug. RESULTS: Analysis of comparative clinical effectiveness of the drugs revealed that the use of Influnet was accompanied by the rapider alleviation of fever and other ARVI symptoms and by its shorter treatment duration (4...
2015: Terapevticheskiĭ Arkhiv
Patricia Jakel, Cynthia Carsten, Melinda Braskett, Arvie Carino
Hypersensitivity reactions to chemotherapeutic agents can cause the discontinuation of first-line therapies. Chemotherapy desensitization is a safe, but labor-intensive, process to administer these important medications. A desensitization protocol can enable a patient to receive the entire target dose of a medication, even if the patient has a history of severe infusion reactions. In this article, the authors explain the pathophysiology of hypersensitivity reactions and describe the recent development of desensitization protocols in oncology...
February 2016: Clinical Journal of Oncology Nursing
Roy S Herbst, Paul Baas, Dong-Wan Kim, Enriqueta Felip, José L Pérez-Gracia, Ji-Youn Han, Julian Molina, Joo-Hang Kim, Catherine Dubos Arvis, Myung-Ju Ahn, Margarita Majem, Mary J Fidler, Gilberto de Castro, Marcelo Garrido, Gregory M Lubiniecki, Yue Shentu, Ellie Im, Marisa Dolled-Filhart, Edward B Garon
BACKGROUND: Despite recent advances in the treatment of advanced non-small-cell lung cancer, there remains a need for effective treatments for progressive disease. We assessed the efficacy of pembrolizumab for patients with previously treated, PD-L1-positive, advanced non-small-cell lung cancer. METHODS: We did this randomised, open-label, phase 2/3 study at 202 academic medical centres in 24 countries. Patients with previously treated non-small-cell lung cancer with PD-L1 expression on at least 1% of tumour cells were randomly assigned (1:1:1) in blocks of six per stratum with an interactive voice-response system to receive pembrolizumab 2 mg/kg, pembrolizumab 10 mg/kg, or docetaxel 75 mg/m(2) every 3 weeks...
April 9, 2016: Lancet
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