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https://www.readbyqxmd.com/read/28428555/application-of-high-resolution-melting-assay-hrm-to-study-temperature-dependent-intraspecific-competition-in-a-pathogenic-bacterium
#1
Roghaieh Ashrafi, Matthieu Bruneaux, Lotta-Riina Sundberg, Katja Pulkkinen, Tarmo Ketola
Studies on species' responses to climate change have focused largely on the direct effect of abiotic factors and in particular temperature, neglecting the effects of biotic interactions in determining the outcome of climate change projections. Many microbes rely on strong interference competition; hence the fitness of many pathogenic bacteria could be a function of both their growth properties and intraspecific competition. However, due to technical challenges in distinguishing and tracking individual strains, experimental evidence on intraspecific competition has been limited so far...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28427441/physical-activity-among-children-objective-measurements-using-fitbit-one-%C3%A2-and-actigraph
#2
Lotta Hamari, Tiina Kullberg, Jukka Ruohonen, Olli J Heinonen, Natalia Díaz-Rodríguez, Johan Lilius, Anni Pakarinen, Annukka Myllymäki, Ville Leppänen, Sanna Salanterä
BACKGROUND: Self-quantification of health parameters is becoming more popular; thus, the validity of the devices requires assessments. The aim of this study was to evaluate the validity of Fitbit One step counts (Fitbit Inc., San Francisco, CA, USA) against Actigraph wActisleep-BT step counts (ActiGraph, LLC, Pensacola, FL, USA) for measuring habitual physical activity among children. DESIGN: The study was implemented as a cross-sectional experimental design in which participants carried two waist-worn activity monitors for five consecutive days...
April 20, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28413705/acute-stroke-alert-activation-emergency-service-use-and-reperfusion-therapy-in-sweden
#3
Marie Eriksson, Eva-Lotta Glader, Bo Norrving, Birgitta Stegmayr, Kjell Asplund
OBJECTIVES: Ambulance services and stroke alerts reduce the time from stroke onset to acute stroke diagnosis. We describe the use of stroke alerts and ambulance services in different hospitals and patient groups and their relationship with reperfusion therapy. METHODS: This nationwide study included 49,907 patients admitted with acute stroke who were registered in The Swedish Stroke Register (Riksstroke) in 2011-2012. RESULTS: The proportions of patients admitted as stroke alerts out of all acute stroke admissions varied from 12...
April 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28402687/seatbelt-pre-pretensioner-effect-on-child-sized-dummies-during-run-off-road-events
#4
Isabelle Stockman, Katarina Bohman, Lotta Jakobsson
Objective Run-off road events occur frequently and can result in severe consequences. Several potential injury causing mechanisms can be observed in the diverse types of run-off road events. Real world data shows that different types of environments, such as rough terrain, ditch types and whether multiple events occur, may be important contributing factors to the occupant injury. While countermeasures addressing front seat occupants have been presented, studies on rear seat occupant retention in situations such as run-off road events are lacking...
April 12, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28399411/inhibition-of-hematopoietic-cell-kinase-activity-suppresses-myeloid-cell-mediated-colon-cancer-progression
#5
Ashleigh R Poh, Christopher G Love, Frederick Masson, Adele Preaudet, Cary Tsui, Lachlan Whitehead, Simon Monard, Yelena Khakham, Lotta Burstroem, Guillaume Lessene, Oliver Sieber, Clifford Lowell, Tracy L Putoczki, Robert J J O'Donoghue, Matthias Ernst
Aberrant activation of the SRC family kinase hematopoietic cell kinase (HCK) triggers hematological malignancies as a tumor cell-intrinsic oncogene. Here we find that high HCK levels correlate with reduced survival of colorectal cancer patients. Likewise, increased Hck activity in mice promotes the growth of endogenous colonic malignancies and of human colorectal cancer cell xenografts. Furthermore, tumor-associated macrophages of the corresponding tumors show a pronounced alternatively activated endotype, which occurs independently of mature lymphocytes or of Stat6-dependent Th2 cytokine signaling...
April 10, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28370485/19f-nmr-spectroscopic-analysis-of-the-binding-modes-in-triple-helical-pna-microrna-complexes
#6
Pasi Markus Virta, Ville Tähtinen, Lotta Granqvist, Merita Murtola, Roger Strömberg
Triplex-forming peptide nucleic acids (TFPNAs) were targeted to double helical regions of 19F-labelled RNA hairpin models (a UA-rich duplex with a hexaethylene glycol (heg) loop and a miR-215 model). In addition to the conventional UV- and CD-based detection, the binding was monitored by 19F NMR spectroscopy. Detailed information considering the stoichiometry and transition between the triple helical PNA/RNA- and (PNA)2/RNA-binding modes could be obtained. γ-(R)-hydroxymethyl-modified (thymine-1-yl- and 2-aminopyridin-3-yl-acetyl derivatives) TFPNAs were additionally synthesized, targeted to the same RNA models and the effect of the γ-(R)-hydroxymethyl group on the binding was studied...
March 28, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28344872/intravenously-usable-fully-serotype-3-oncolytic-adenovirus-coding-for-cd40l-as-an-enabler-of-dendritic-cell-therapy
#7
Sadia Zafar, Suvi Parviainen, Mikko Siurala, Otto Hemminki, Riikka Havunen, Siri Tähtinen, Simona Bramante, Lotta Vassilev, Hongjie Wang, Andre Lieber, Silvio Hemmi, Tanja de Gruijl, Anna Kanerva, Akseli Hemminki
Vaccination with dendritic cells (DCs), the most potent professional antigen-presenting cells in the body, is a promising approach in cancer immunotherapy. However, tumors induce immunosuppression in their microenvironment that suppresses and impairs the function of DCs. Therefore, human clinical trials with DC therapy have often been disappointing. To improve the therapeutic efficacy and to overcome the major obstacles of DC therapy, we generated a novel adenovirus, Ad3-hTERT-CMV-hCD40L, which is fully serotype 3 and expresses hCD40L for induction of antitumor immune response...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28334471/the-clinical-applicability-of-a-daily-summary-of-patients-self-reported-postoperative-pain-a-repeated-measure-analysis
#8
Lotta Wikström, Kerstin Eriksson, Bengt Fridlund, Mats Nilsson, Kristofer Årestedt, Anders Broström
AIM AND OBJECTIVES: (I) to determine if a central tendency, median, based on patients' self-rated pain is a clinically applicable daily measure to show patients' postoperative pain on the first day after major surgery (II) and to determine the number of self-ratings required for the calculation of this measure. BACKGROUND: Perioperative pain traits in medical records are difficult to overview. The clinical applicability of a daily documented summarising measure of patients' self-rated pain scores is little explored...
March 23, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28319848/treatment-of-premenstrual-dysphoric-disorder-with-the-gabaa-receptor-modulating-steroid-antagonist-sepranolone-uc1010-a-randomized-controlled-trial
#9
Marie Bixo, Karin Ekberg, Inger Sundström Poromaa, Angelica Lindén Hirschberg, Aino Fianu Jonasson, Lotta Andréen, Erika Timby, Marianne Wulff, Agneta Ehrenborg, Torbjörn Bäckström
CONTEXT: Allopregnanolone is a metabolite from progesterone and a positive modulator of the GABAA receptor. This endogenous steroid may induce negative mood in sensitive women when present in serum levels comparable to the premenstrual phase. Its endogenous isomer, isoallopregnanolone, has been shown to antagonize allopregnanolone effects in experimental animal and human models. OBJECTIVE: The objective was to test whether inhibition of allopregnanolone by treatment with the GABAA modulating steroid antagonist (GAMSA) Sepranolone (UC1010) during the premenstrual phase could reduce symptoms of the premenstrual dysphoric disorder (PMDD)...
March 1, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28315166/effects-of-thromboprophylactic-doses-of-apixaban-and-rivaroxaban-on-coagulation-and-thrombin-generation-in-association-with-total-hip-replacement
#10
Tuukka A Helin, Lauri Virtanen, Mikko Manninen, Jarkko Leskinen, Juhana Leppilahti, Lotta Joutsi-Korhonen, Riitta Lassila
Factor Xa inhibitors (FXaI) apixaban and rivaroxaban are used for thromboprophylaxis after major elective orthopaedic surgery. Because few patient sample studies exist, we postoperatively assessed patients undergoing unilateral total hip arthroplasty, including 22 treated with apixaban (2.5 mg BID) and 20 treated with rivaroxaban (10 mg OD). We collected blood samples before and 3 h after drug intake at 4 time points, preoperatively, as well as on day 1, week 1 (day 2-8) and day 28 post-operation. APTT and PT were immediately analysed...
May 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28295990/role-of-residual-acute-stent-malapposition-in-percutaneous-coronary-interventions
#11
Enrico Romagnoli, Laura Gatto, Alessio La Manna, Francesco Burzotta, Nevio Taglieri, Francesco Saia, Francesco Amico, Valeria Marco, Vito Ramazzotti, Alessandro Di Giorgio, Luca Di Vito, Alberto Boi, Marco Contarini, Fausto Castriota, Gary S Mintz, Francesco Prati
OBJECTIVES: Assess clinical consequences of acute stent malapposition (ASM) in the context of the multicenter Centro per la Lotta Contro l'Infarto-Optimization of Percutaneous Coronary Intervention (CLI-OPCI) registry. BACKGROUND: ASM as important determinant of stent thrombosis (ST) risk remains controversial. METHODS: From 2009 to 2013, we retrospectively analyzed postprocedural optical coherence tomography (OCT) findings in 864 patients undergoing percutaneous coronary intervention, assessing prevalence and magnitude of ASM and exploring correlation with outcome, especially ST...
March 15, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28288561/coinfection-outcome-in-an-opportunistic-pathogen-depends-on-the-inter-strain-interactions
#12
Hanna Kinnula, Johanna Mappes, Lotta-Riina Sundberg
BACKGROUND: In nature, organisms are commonly coinfected by two or more parasite strains, which has been shown to influence disease virulence. Yet, the effects of coinfections of environmental opportunistic pathogens on disease outcome are still poorly known, although as host-generalists they are highly likely to participate in coinfections. We asked whether coinfection with conspecific opportunistic strains leads to changes in virulence, and if these changes are associated with bacterial growth or interference competition...
March 14, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28273151/self-delivered-misinformation-merging-the-choice-blindness-and-misinformation-effect-paradigms
#13
Lotta Stille, Emelie Norin, Sverker Sikström
Choice blindness is the failure to detect a discrepancy between a choice and its outcome. The misinformation effect occurs when the recollection of an event changes because new, misleading information about the event is received. The purpose of this study was to merge the choice blindness and misinformation effect paradigms, and thus examine whether choice blindness can be created for individuals' recollections of a witnessed event, and whether this will affect their later recollections of the event. Thus, as a way of delivering misinformation the participants ostensibly became their own source of the misleading information...
2017: PloS One
https://www.readbyqxmd.com/read/28265265/response-of-deep-subsurface-microbial-community-to-different-carbon-sources-and-electron-acceptors-during-%C3%A2-2-months-incubation-in-microcosms
#14
Lotta Purkamo, Malin Bomberg, Mari Nyyssönen, Lasse Ahonen, Ilmo Kukkonen, Merja Itävaara
Acetate plays a key role as electron donor and acceptor and serves as carbon source in oligotrophic deep subsurface environments. It can be produced from inorganic carbon by acetogenic microbes or through breakdown of more complex organic matter. Acetate is an important molecule for sulfate reducers that are substantially present in several deep bedrock environments. Aceticlastic methanogens use acetate as an electron donor and/or a carbon source. The goal of this study was to shed light on carbon cycling and competition in microbial communities in fracture fluids of Finnish crystalline bedrock groundwater system...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28260241/association-of-self-perceived-physical-competence-and-leisure-time-physical-activity-in-childhood-a-follow-up-study
#15
Lotta Hamari, Olli J Heinonen, Minna Aromaa, Riitta Asanti, Leena Koivusilta, Pasi Koski, Camilla Laaksonen, Jaakko Matomäki, Katja Pahkala, Anni Pakarinen, Sakari Suominen, Sanna Salanterä
BACKGROUND: The basis of self-perceived physical competence is built in childhood and school personnel have an important role in this developmental process. We investigated the association between initial self-perceived physical competence and reported leisure-time physical activity (LTPA) longitudinally in 10-, 12-, and 15-year-old children. METHODS: This longitudinal follow-up study comprises pupils from an elementary school cohort (N = 1346) in the city of Turku, Finland (175,000 inhabitants)...
April 2017: Journal of School Health
https://www.readbyqxmd.com/read/28237982/associations-between-ischemic-stroke-follow-up-socioeconomic-status-and-adherence-to-secondary-preventive-drugs-in-southern-sweden-observations-from-the-swedish-stroke-register-riksstroke
#16
Teresa Ullberg, Eva-Lotta Glader, Elisabet Zia, Jesper Petersson, Marie Eriksson, Bo Norrving
BACKGROUND: Currently, the knowledge that one has on adequate stroke follow-up practices is limited. We report associations between 90-day stroke follow-up, socio-economy and adherence to secondary prevention in southern Sweden. METHODS: Data on 5,602 patients with ischemic stroke January 1, 2008-December 31, 2010, were obtained from Riksstroke and linked to official registers for information on education, birth country, doctor's follow-ups, and secondary prevention...
February 25, 2017: Neuroepidemiology
https://www.readbyqxmd.com/read/28236944/neurourbanism-towards-a-new-discipline
#17
Mazda Adli, Maximilian Berger, Eva-Lotta Brakemeier, Ludwig Engel, Joerg Fingerhut, Ana Gomez-Carrillo, Rainer Hehl, Andreas Heinz, Juergen Mayer H, Nassim Mehran, Sissel Tolaas, Henrik Walter, Ute Weiland, Joerg Stollmann
No abstract text is available yet for this article.
March 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28223533/generalized-myoclonic-epilepsy-with-photosensitivity-in-juvenile-dogs-caused-by-a-defective-diras-family-gtpase-1
#18
Franziska Wielaender, Riika Sarviaho, Fiona James, Marjo K Hytönen, Miguel A Cortez, Gerhard Kluger, Lotta L E Koskinen, Meharji Arumilli, Marion Kornberg, Andrea Bathen-Noethen, Andrea Tipold, Kai Rentmeister, Sofie F M Bhatti, Velia Hülsmeyer, Irene C Boettcher, Carina Tästensen, Thomas Flegel, Elisabeth Dietschi, Tosso Leeb, Kaspar Matiasek, Andrea Fischer, Hannes Lohi
The clinical and electroencephalographic features of a canine generalized myoclonic epilepsy with photosensitivity and onset in young Rhodesian Ridgeback dogs (6 wk to 18 mo) are described. A fully penetrant recessive 4-bp deletion was identified in the DIRAS family GTPase 1 (DIRAS1) gene with an altered expression pattern of DIRAS1 protein in the affected brain. This neuronal DIRAS1 gene with a proposed role in cholinergic transmission provides not only a candidate for human myoclonic epilepsy but also insights into the disease etiology, while establishing a spontaneous model for future intervention studies and functional characterization...
March 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28219705/substance-p-represents-a-novel-first-line-defense-mechanism-in-the-nose
#19
Olivia Larsson, Lotta Tengroth, Yuan Xu, Rolf Uddman, Susanna Kumlien Georén, Lars-Olaf Cardell
BACKGROUND: Neuropeptides, such as substance P (SP), have long been seen as mediators of widespread, continuous airway inflammation, a process known as neurogenic inflammation. However, this has been difficult to demonstrate clinically, suggesting an alternative role for these signaling molecules. OBJECTIVES: To examine the role of SP in nasal infection, by assessing the release of SP in response to viral stimulation and characterizing the effects of SP on innate immunity, the latter reflected in changes in local Toll-like receptor (TLR) expression...
February 17, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28192654/self-assembly-of-recombinant-silk-as-a-strategy-for-chemical-free-formation-of-bioactive-coatings-a-real-time-study
#20
Linnea Nilebäck, Jesper Hedin, Mona Widhe, Lotta S Floderus, Annika Krona, Helena Bysell, My Hedhammar
Functionalization of biomaterials with biologically active peptides can improve their performance after implantation. By genetic fusion to self-assembling proteins, the functional peptides can easily be presented on different physical formats. Herein, a chemical-free coating method based on self-assembly of the recombinant spider silk protein 4RepCT is described and used to prepare functional coatings on various biomaterial surfaces. The silk assembly was studied in real-time, revealing the occurrence of continuous assembly of silk proteins onto surfaces and the formation of nanofibrillar structures...
March 13, 2017: Biomacromolecules
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