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Thomas H Segall-Shapiro, Eduardo D Sontag, Christopher A Voigt
The internal environment of growing cells is variable and dynamic, making it difficult to introduce reliable parts, such as promoters, for genetic engineering. Here, we applied control-theoretic ideas to design promoters that maintained constant levels of expression at any copy number. Theory predicts that independence to copy number can be achieved by using an incoherent feedforward loop (iFFL) if the negative regulation is perfectly non-cooperative. We engineered iFFLs into Escherichia coli promoters using transcription-activator-like effectors (TALEs)...
March 19, 2018: Nature Biotechnology
Trudy Mooren, Yoke Rabaia, Suzan Mitwalli, Relinde Reiffers, Rosemarijn Koenen, Marguerithe de Man
BACKGROUND: Families with a child who has a disability have extra difficulties, particularly when services are hard to reach or less available. In a collaborative project, the Institute of Community and Public Health, the Palestinian community-based rehabilitation programme, and international non-governmental organisations cooperated to share and develop expertise and knowledge on increasing families' resilience through establishing family groups. This contribution focuses on the use of the Multi-Family Approach (MFA) in a Palestinian context...
February 21, 2018: Lancet
Monica M Lahra, Irene Martin, Walter Demczuk, Amy V Jennison, Ken-Ichi Lee, Shu-Ichi Nakayama, Brigitte Lefebvre, Jean Longtin, Alison Ward, Michael R Mulvey, Teodora Wi, Makoto Ohnishi, David Whiley
Ceftriaxone remains a first-line treatment for patients infected by Neisseria gonorrhoeae in most settings. We investigated the possible spread of a ceftriaxone-resistant FC428 N. gonorrhoeae clone in Japan after recent isolation of similar strains in Denmark (GK124) and Canada (47707). We report 2 instances of the FC428 clone in Australia in heterosexual men traveling from Asia. Our bioinformatic analyses included core single-nucleotide variation phylogeny and in silico molecular typing; phylogenetic analysis showed close genetic relatedness among all 5 isolates...
April 2018: Emerging Infectious Diseases
Kelby Brown, Tracy L Setji, Sarah L Hale, April Cooper, Beatrice Hong, Rebecca Herbst, R Clayton Musser, Susan Freeman, Ted Shaikewitz, Jimmy Greenlee, Noppon P Setji
Intravenous insulin with glucose is used in urgent treatment for hyperkalemia but has a significant risk of hypoglycemia. The authors developed an order panel within the electronic health record system that utilizes weight-based insulin dosing and standardized blood glucose monitoring to reduce hypoglycemia. As initial evaluation of this protocol, the authors retrospectively compared potassium and blood glucose lowering in patients treated with the weight-based (0.1 units/kg) insulin order panel (n = 195) with those given insulin based on provider judgment (n = 69)...
March 1, 2018: American Journal of Medical Quality: the Official Journal of the American College of Medical Quality
Kotaro Ozasa, Eric J Grant, Kazunori Kodama
Cohorts of atomic bomb survivors-including those exposed in utero-and children conceived after parental exposure were established to investigate late health effects of atomic bomb radiation and its transgenerational effects by the Atomic Bomb Casualty Commission (ABCC) in the 1950s. ABCC was reorganized to the Radiation Effects Research Foundation (RERF) in 1975, and all work has been continued at RERF. The Life Span Study, the cohort of survivors, consists of about 120,000 subjects and has been followed since 1950...
March 17, 2018: Journal of Epidemiology
Ingela Fredriksson, Susanna Geidne, Charli Eriksson
AIMS: The aim of this paper is to advocate for the importance of meaningful leisure time for young people from a health-promotion perspective using experiences from two youth centres in multicultural neighbourhoods in Sweden. METHODS: In this practice-based study, data were collected between 2012 and 2014 at two youth centres in multicultural, socially deprived suburbs in Sweden using surveys with 12- to 16-year-old adolescents ( n = 207), seven individual interviews with staff and three cooperation partners in the neighbourhoods, and six group interviews with adolescents (50% girls)...
February 2018: Scandinavian Journal of Public Health
Xiao-Xiao Lian, Xiao-Xia Guo
To investigate the herbal prescription rules of Professor Jiang Liangduo in the treatment of abdominal mass based on the traditional Chinese medicine inheritance support system software (TCMISS) of version 2.5, find out new herbal formulas for the treatment of abdominal mass, and then provide new reference to its traditional Chinese medicine therapy. By the method of retrospective study, one hundred and thirty-two outpatient prescriptions of Professor Jiang for the treatment of abdominal mass were collected to establish a typical database with TCMISS...
January 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Jun-Hua Zhang, You-Ping Li, Bo-Li Zhang
The introduction and popularization of evidence-based medicine has opened up a new research field of clinical efficacy evaluation of traditional Chinese medicine(TCM), produced new research ideas and methods, and promoted the progress of clinical research of TCM. After about 20 years assiduous study and earnest practice, the evidence based evaluation method and technique, which conforms to the characteristics of TCM theory and practice, has been developing continuously. Evidence-based Chinese medicine (EBCM) has gradually formed and become an important branch of evidence-based medicine...
January 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Evan Johnson, Kyle J Cooper, Jeffrey Forris Beecham Chick, Joseph J Gemmete, Ravi N Srinivasa
Biliary stent placement is an adjunct for complex biliary intervention. Patients with benign biliary strictures or aversion to external drainage may benefit from placement of retrievable biliary stents. This report describes a patient with a working diagnosis of benign biliary stricture who underwent interventional radiology-operated endoscopy-guided transnasal placement of a fully covered retrievable biliary stent.
February 2018: Radiology Case Reports
Ravi N Srinivasa, William M Sherk, Jeffrey Forris Beecham Chick, Kyle Cooper, Joseph J Gemmete
Placement of percutaneous jejunostomy tubes using fluoroscopy may be technically challenging because of the peristaltic motion of small bowel loops within the peritoneum. Furthermore, fluoroscopic jejunostomy placement has an inherent risk of complications, including peritonitis and death. A transnasal snare technique to facilitate direct jejunostomy in patients with a surgically altered gastric anatomy has been previously reported. This report describes a patient with gastroparesis and a chronic nasojejunal tube who underwent a percutaneous transgastric snare technique to facilitate the placement of a direct jejunostomy...
February 2018: Radiology Case Reports
Hung-Chih Yang, Hsiao-Hui Tsou, Sung-Nan Pei, Cheng-Shyong Chang, Jia-Hong Chen, Ming Yao, Shyh-Jer Lin, Johnson Lin, Quan Yuan, Ningshao Xia, Tsang-Wu Liu, Pei-Jer Chen, Ann-Lii Cheng, Chiun Hsu
BACKGROUND AND AIMS: Absence or low anti-hepatitis B (HBV) surface antibody (anti-HBs) is associated with increased risk of HBV reactivation in lymphoma patients with resolved HBV infection receiving rituximab-containing chemotherapy. Quantification of anti-HBV core antibody (anti-HBc) is a new marker associated with the natural history and treatment response of chronic HBV infection. This study investigated whether baseline anti-HBc and anti-HBs levels may better predict HBV reactivation...
March 15, 2018: Journal of Hepatology
Cristina Grávalos, Alfredo Carrato, María Tobeña, Mercedes Rodriguez-Garrote, Gemma Soler, José Mª Vieitez, Luis Robles, Manuel Valladares-Ayerbes, Eduardo Polo, Mª Luisa Limón, Mª José Safont, Eva Martínez de Castro, Pilar García-Alfonso, Enrique Aranda
INTRODUCTION: The aim of this study was to evaluate the efficacy and safety of maintenance therapy with axitinib versus placebo following induction therapy in patients with metastatic colorectal cancer (mCRC). PATIENTS AND METHODS: In this double-blinded, phase II trial, patients with mCRC who had not progressed after 6 to 8 months of first-line chemotherapy were randomized to receive axitinib (5 mg twice a day) (arm A) or placebo (arm B). RESULTS: Forty-nine patients were included: 25 in arm A and 24 in arm B...
February 17, 2018: Clinical Colorectal Cancer
D Díaz-Díaz, M Villanova Martínez, E Palencia Herrejón
OBJECTIVE: To analyze the factors influencing in-hospital mortality among cancer patients admitted to an Intensive Care Unit (ICU). DESIGN: A retrospective observational study was carried out. SETTING: The ICU of a community hospital. PATIENTS: Adults diagnosed with solid or hematological malignancies admitted to the ICU, excluding those admitted after scheduled surgery and those with an ICU stay of under 24h. INTERVENTIONS: Review of clinical data...
March 15, 2018: Medicina Intensiva
Geoffrey L Smith, Callum Talbot-Cooper, Yongxu Lu
Interferons (IFNs) are secreted glycoproteins that are produced by cells in response to virus infection and other stimuli and induce an antiviral state in cells bearing IFN receptors. In this way, IFNs restrict virus replication and spread before an adaptive immune response is developed. Viruses are very sensitive to the effects of IFNs and consequently have evolved many strategies to interfere with interferon. This is particularly well illustrated by poxviruses, which have large dsDNA genomes and encode hundreds of proteins...
2018: Advances in Virus Research
Carl Peter J Maury
A crucial stage in the origin of life was the emergence of the first molecular entity that was able to replicate, transmit information, and evolve on the early Earth. The amyloid world hypothesis posits that in the pre-RNA era, information processing was based on catalytic amyloids. The self-assembly of short peptides into β-sheet amyloid conformers leads to extraordinary structural stability and novel multifunctionality that cannot be achieved by the corresponding nonaggregated peptides. The new functions include self-replication, catalytic activities, and information transfer...
March 17, 2018: Cellular and Molecular Life Sciences: CMLS
Miyuki Kuno
A proton is a ubiquitous signaling ion. Many transmembrane H+ transport pathways either maintain pH homeostasis or generate acidic compartments. The osteoclast is a bone-resorbing cell, which degrades bone tissues by secreting protons and lysosomal enzymes into the resorption pit. The plasma membrane facing bone tissue (ruffled border), generated partly by fusion of lysosomes, may mimic H+ flux mechanisms regulating acidic vesicles. We identified three electrogenic H+ -fluxes in osteoclast plasma membranes-a vacuolar H+ -ATPase (V-ATPase), a voltage-gated proton channel (Hv channel) and an acid-inducible H+ -leak-whose electrophysiological profiles and regulation mechanisms differed...
March 17, 2018: Pflügers Archiv: European Journal of Physiology
Frank T Bergmann, Jonathan Cooper, Matthias König, Ion Moraru, David Nickerson, Nicolas Le Novère, Brett G Olivier, Sven Sahle, Lucian Smith, Dagmar Waltemath
The creation of computational simulation experiments to inform modern biological research poses challenges to reproduce, annotate, archive, and share such experiments. Efforts such as SBML or CellML standardize the formal representation of computational models in various areas of biology. The Simulation Experiment Description Markup Language (SED-ML) describes what procedures the models are subjected to, and the details of those procedures. These standards, together with further COMBINE standards, describe models sufficiently well for the reproduction of simulation studies among users and software tools...
March 19, 2018: Journal of Integrative Bioinformatics
Maria S Shutova, Tatyana M Svitkina
Nonmuscle myosin II is an actin-based motor that executes numerous mechanical tasks in cells including spatiotemporal organization of the actin cytoskeleton, adhesion, migration, cytokinesis, tissue remodeling, and membrane trafficking. Nonmuscle myosin II is ubiquitously expressed in mammalian cells as a tissue-specific combination of three paralogs. Recent studies reveal novel specific aspects of their kinetics, intracellular regulation and functions. On the other hand, the three paralogs also can copolymerize and cooperate in cells...
March 16, 2018: Biochemical and Biophysical Research Communications
Malana Moshesh, Tina Saldana, Elizabeth Deans, Tracy Cooper, Donna Baird
OBJECTIVE: The object of this study is to examine factors and symptoms associated with low-lying IUDs as defined by ultrasound. STUDY DESIGN: This is a cross-sectional sub-study of participants in the Study of Environment, Life-style, and Fibroids (SELF). SELF participants had screening ultrasounds for fibroids at study enrollment; those with an IUD in place are included in this sub-study. Low-lying IUDs were identified and localized. Logistic regression was used to identify factors and symptoms associated with low-lying IUDs...
March 14, 2018: Contraception
Lauri Nummenmaa, Juha M Lahnakoski, Enrico Glerean
Sociability and capability of shared mental states are hallmarks of the human species, and pursuing shared goals oftentimes requires coordinating both behaviour and mental states. Here we review recent work using indices of intersubject neural synchronisation for measuring similarity of mental states across individuals. We discuss the methodological advances and limitations in the analyses based on intersubject synchrony, and discuss how these kinds of model-free analysis techniques enable the investigation of the brain basis of complex social processes...
March 8, 2018: Current Opinion in Psychology
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