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Till M Schneider, Armin M Nagel, Markus Zorn, Andreas Wetscherek, Martin Bendszus, Mark E Ladd, Sina Straub
Blood clotting is a fundamental biochemical process in post-hemorrhagic hemostasis. Although the varying appearance of coagulating blood in T1 - and T2 -weighted images is widely used to qualitatively determine bleeding age, the technique permits only a rough discrimination of coagulation stages, and it remains difficult to distinguish acute and chronic hemorrhagic stages because of low T1 - and T2 -weighted signal intensities in both instances. To investigate new biomedical parameters for magnetic resonance imaging-based characterization of blood clotting kinetics, sodium imaging and quantitative susceptibility mapping (QSM) were compared with conventional T1 - and T2 -weighted imaging, as well as with biochemical hemolysis parameters...
April 25, 2018: NMR in Biomedicine
Kin Cheung, Shirley S Y Ching, Ka Yan Ma, Grace Szeto
The Workstyle Short Form (24 items) (WSF-24) has been tested for its psychometric properties on work-related upper-extremity musculoskeletal symptoms (WRUEMSs) among office workers. However, the impact of workstyle should not only be limited to WRUEMSs and the sedentary workforce. The purpose of this study was to test the psychometric properties of the modified 24-item Chinese WSF (C-WSF-24) to identify work-related musculoskeletal symptoms (WRMSs) in various body parts among nursing assistants (NAs) working in nursing homes...
April 22, 2018: International Journal of Environmental Research and Public Health
Xiao-Yan Yi, Shi-Fen Ni, Mohammad Rasoul Ghadami, Hua-Qing Meng, Ming-Yan Chen, Li Kuang, Yu-Qing Zhang, Li Zhang, Xin-Yu Zhou
OBJECTIVE: To assess the efficacy and tolerability of trazodone compared with placebo in patients with insomnia. METHODS: Electronic databases were searched and relevant reports were hand-screened to identify eligible trials. Only randomized placebo-controlled trials were included. Standardized mean differences (SMD) and the odds ratios (OR) were estimated using a random-effect model. Primary efficacy outcomes included sleep efficiency (SE%) and self-reported sleep quality (SQ)...
May 2018: Sleep Medicine
Ilektra-Chara Giassa, Jan Rynes, Tomas Fessl, Silvie Foldynova-Trantirkova, Lukas Trantirek
Conventional biophysical and chemical biology approaches for delineating relationships between the structure and biological function of nucleic acids (NAs) abstract NAs from their native biological context. However, cumulative experimental observations have revealed that the structure, dynamics and interactions of NAs might be strongly influenced by a broad spectrum of specific and non-specific physical-chemical environmental factors. This consideration has recently sparked interest in the development of novel tools for structural characterization of NAs in the native cellular context...
April 21, 2018: FEBS Letters
Mustafa Salih Hizir, Nidhi Nandu, Mehmet Veysel Yigit
A novel combinatorial nanosensor array for miRNA analyses was assembled using the intrinsic non-covalent interactions of unmodified two-dimensional nanoparticles. Discrimination of nine miRNA analogs with as little as a single nucleotide difference was demonstrated under four hours. All nine targets were identified simultaneously with 95% confidence. The developed nanotechnology offered identification and quantification of unknown targets with unknown concentration. Discrimination of target mixtures from low-to-high ratios was demonstrated...
April 20, 2018: Analytical Chemistry
Chun-Lin Chen, Yan Cui, Man Cui, Wen-Juan Zhou, Hui-Lan Wu, Hong-Qing Ling
Fe and Zn are essential micronutrients for plant growth, and the interrelationship regarding their homeostasis is very complicated. In this study, we identified a FIT-binding protein (FBP) using the yeast two-hybrid system. The C-terminus of FBP binds to the bHLH domain of FIT, abolishing the DNA-binding capacity of FIT. Knockout of FBP results in an enhanced expression of NAS genes and a higher NA content, and the fbp mutant exhibits tolerance to excessive Zn. Physiological analyses reveal that the mutant fbp retains a larger amount of Zn in roots and transfers a greater proportion of Fe to shoots than that in wild type under Zn-excessive stress...
April 20, 2018: Plant, Cell & Environment
Joseph Yoo, Hie-Won Hann, Robert Coben, Mitchell Conn, Anthony J DiMarino
Since the discovery of the hepatitis B virus (HBV) by Blumberg et al. in 1965, its genome, sequence, epidemiology, and hepatocarcinogenesis have been elucidated. Globally, hepatitis B virus (HBV) is still responsible for the majority of hepatocellular carcinoma (HCC). HCC is the sixth-most common cancer in the world and the second-most common cancer death. The ultimate goal of treating HBV infection is the prevention of HCC. Fortunately, anti-HBV treatment with nucleos(t)ide analogues (NAs), which began with lamivudine in 1998, has resulted in remarkable improvements in the survival of patients with chronic hepatitis B and a reduced incidence of HCC...
April 20, 2018: Diseases (Basel)
Çağrı Ceylan Koçak, Asiye Nas, Halit Kantekin, Zekerya Dursun
This work reports the synthesis of new symmetrically substituted manganese(III) phthalocyanine (2eOHMnPc) (2) containing tetra 5-chloroquinolin-8-yloxy group at the peripheral position for the first time. Manganese(III) phthalocyanine (2) was synthesized by cyclotetramerization of 4-(5-chloroquinolin-8-yloxy)phthalonitrile (1) in the presence of corresponding metal salt (manganese(II) chloride). This peripherally substituted phthalocyanine complex (2) was purified by column chromatography and characterized by several techniques such as IR, mass and UV-Visible spectral data...
July 1, 2018: Talanta
James C Ross, Peter J Castaldi, Michael H Cho, Craig P Hersh, Farbod N Rahaghi, Gonzalo V Sánchez-Ferrero, Margaret M Parker, Augusto A Litonjua, David Sparrow, Jennifer G Dy, Edwin K Silverman, George R Washko, Raúl San José Estépar
RATIONALE: The relationship between longitudinal lung function trajectories, chest computed tomography (CT) imaging, and genetic predisposition to COPD has not been explored. OBJECTIVES: 1) To model trajectories using a data-driven approach applied to longitudinal data spanning adulthood in the Normative Aging Study (NAS), and 2) to apply these models to demographically similar subjects in the COPDGene Study with detailed phenotypic characterization including chest CT...
April 19, 2018: American Journal of Respiratory and Critical Care Medicine
Adam K Klein, Erin M Purvis, Kathy Ayala, Lisette Collins, Jacob T Krug, Matthew S Mayes, Aaron Ettenberg
Recent work has implicated the Lateral Habenula (LHb) in the production of anxiogenic and aversive states. It is innervated by all the major monoamine neurotransmitter systems and has projections that have been shown to modulate the activity of both dopaminergic and serotonergic brain regions. Cocaine is a stimulant drug of abuse that potentiates neurotransmission in these monoamine systems and recent research suggests that the drug's behavioral effects may be related in part to its actions within the LHb. The present research was therefore devised to test the hypothesis that alterations in serotonin (5-HT) function within the LHb can affect the behavioral response to cocaine...
April 13, 2018: Behavioural Brain Research
Shengpeng Mo, Shuangde Li, Quanming Ren, Mingyuan Zhang, Yuhai Sun, Bangfen Wang, Zhentao Feng, Qi Zhang, Yunfa Chen, Daiqi Ye
A generic hydrothermal synthesis route has been successfully designed and utilized to in situ grow highly ordered Co3O4 nanoarray (NA) precursors on Ni substrates, forming a series of Co3O4 nanoarray-based monolithic catalysts with subsequent calcination. The morphology evolution of Co3O4 nanostructures which depends upon the reaction time, with and without CTAB or NH4F is investigated in detail, which is used to further demonstrate the growth mechanism of Co3O4 nanoarrays with different morphologies. CO is chosen as a probe molecule to evaluate the catalytic performance over the synthesized Co-based oxide catalysts, and the effect of morphological transformation on the catalytic activity is further confirmed via using TEM, H2-TPR, XPS, Raman spectroscopy and in situ Raman spectroscopy...
April 16, 2018: Nanoscale
Monica Verdoia, Claudia Ceccon, Matteo Nardin, Harry Suryapranata, Giuseppe De Luca
Vitamin D deficiency has been implicated in the progression of atherosclerosis and acute thrombotic events. We aimed at evaluating the impact of vitamin D deficiency on periprocedural myocardial infarction (PMI) in patients undergoing percutaneous coronary interventions (PCI). We included 934 patients undergoing non-urgent PCI. Assessment of myocardial biomarkers was performed from 6 to 48 h after PCI. PMI was defined as Creatine Kinase-MB increase by 3 times the Upper Limit Normal or by 50% of an elevated baseline value, periprocedural myocardial damage as Troponin I increase by 3 × ULN or 50% of baseline...
March 4, 2018: Cardiovascular Revascularization Medicine: Including Molecular Interventions
Alexandra-Stavroula Nieri, Kalliopi Manousaki, Maria Kalafati, Katia Grilio Padilha, Siv K Stafseth, Theodoros Katsoulas, Vasiliki Matziou, Margarita Giannakopoulou
OBJECTIVES: To assess the reliability and validity of the Greek version of Nursing Activities Score (NAS), and Therapeutic Intervention Scoring System for Critically Ill Children (TISS-C) in a Greek Paediatric Intensive Care Unit (PICU). RESEARCH METHODOLOGY: A methodological study was performed in one PICU of the largest Paediatric Hospital in Athens-Greece. The culturally adapted and validated Greek NAS version, enriched according to the Norwegian paediatric one (P-NAS), was used...
April 11, 2018: Intensive & Critical Care Nursing: the Official Journal of the British Association of Critical Care Nurses
Yoshihiro Ue, Hiromu Monai, Kaori Higuchi, Daisuke Nishiwaki, Tetsuya Tajima, Kenya Okazaki, Hiroshi Hama, Hajime Hirase, Atsushi Miyawaki
The high-resolution in vivo imaging of mouse brain for quantitative analysis of fine structures, such as dendritic spines, requires objectives with high numerical apertures (NAs) and long working distances (WDs). However, this imaging approach is often hampered by spherical aberration (SA) that results from the mismatch of refractive indices in the optical path and becomes more severe with increasing depth of target from the brain surface. Whereas a revolving objective correction collar has been designed to compensate SA, its adjustment requires manual operation and is inevitably accompanied by considerable focal shift, making it difficult to acquire the best image of a given fluorescent object...
April 9, 2018: Biochemical and Biophysical Research Communications
Ying Peng, Yan Li, Yonghong He, Qinglin Wei, Qiaoling Xie, Liangjun Zhang, Yiju Xia, Xueqian Zhou, Lu Zhang, Xinchan Feng, Kun Chen, Sheng Chen, Wensheng Chen, Qinglin Long, Jin Chai
Neutrophil to lymphocyte ratio (NLR) is widely used to assess inflammatory diseases. We performed a systematic review to explore the prognostic role of NLR for the assessment of liver fibrosis and cirrhosis. Areas covered: We searched the PubMed and EMBASE databases for the eligible papers which explored the association between NLR and liver fibrosis/cirrhosis or investigated the prognostic value of NLR in cirrhotic patients. Expert commentary: In accordance with assessment of liver fibrosis stage, we classified papers into four subgroups by etiology...
April 9, 2018: Expert Review of Gastroenterology & Hepatology
Mohamed Adel Aboelela, Al-Refaey Kandeel, Usama Elsayed, Mohamed Elmorshedi, Waleed Elsarraf, Eman Elsayed, Ahmed Elgawalby, Ahmed Mohamed Sultan, Mohamed Abdel Wahab, Amr Yassen
Background: Transversus abdominis plane (TAP) block is a promising technique for analgesia after abdominal surgery. This prospective, randomized controlled trial assessed the effect of adding dexmedetomidine to bupivacaine in TAP block for donor hepatectomy. We hypothesized that this would improve postoperative morphine consumption and reduce analgesia related complication and inflammation. Methods: A total of 50 donor hepatectomy were enrolled in this study. Patients divided into two equal groups according to drugs used for TAP block...
April 2018: Saudi Journal of Anaesthesia
Yue Ying, Yue-Kai Hu, Jia-Lin Jin, Ji-Ming Zhang, Wen-Hong Zhang, Yu-Xian Huang
BACKGROUND: Current treatment options for chronic hepatitis B (CHB) are pegylated interferon alpha and nucleoside analogues (NAs). NAs have relatively fewer side effects than interferon alpha, and generally well tolerated. Previously 12.9% of patients on telbivudine treatment were reported to develop severe elevation of serum creatine phosphokinase (CPK) levels, but related clinical disease, like lactic acidosis (LA) and rhabdomyolysis (RM) were rare. The pathophysiology may be mitochondrial toxicity, for the NAs inhibit not only hepatitis B virus (HBV) polymerase, but also the host mitochondrial DNA polymerase γ...
April 6, 2018: BMC Gastroenterology
Mehmet Çağlayan, Pelin Oktayoğlu, Elif Ağaçayak, Abdullah Zübeyir Dagli, Mehmet Okçu, Kemal Nas
AIM: The aim of this study was to investigate whether increased intra-abdominal pressure caused by pelvic inflammation and frequent use of the Valsalva maneuver increases the incidence of pelvic organ prolapse (POP) among female patients with ankylosing spondylitis (AS). METHODS: Thirty-nine patients diagnosed as having AS through the use of the modified New York criteria, 47 patients with chronic low-back pain (CLBP), and 38 healthy controls (HCs) were included in this study...
March 19, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
Silja Åvall-Jääskeläinen, Suvi Taponen, Ravi Kant, Lars Paulin, Jochen Blom, Airi Palva, Joanna Koort
Non-aureus staphylococci (NAS) are most commonly isolated from subclinical mastitis. Different NAS species may, however, have diverse effects on the inflammatory response in the udder. We determined the genome sequences of 20 staphylococcal isolates from clinical or subclinical bovine mastitis, belonging to the NAS species Staphylococcus agnetis, S. chromogenes, and S. simulans , and focused on the putative virulence factor genes present in the genomes. For comparison we used our previously published genome sequences of four S...
2018: PeerJ
John D Collins, Elisa S Arch, Jeremy R Crenshaw, Kathie A Bernhardt, Sundeep Khosla, Shreyasee Amin, Kenton R Kaufman
BACKGROUND: Insufficient plantar flexor resistance due to plantar flexor weakness, an impairment common in patient populations, causes substantial gait deficits. The bending stiffness of passive-dynamic ankle-foot orthoses (PD-AFOs) has the capacity to replace lost plantar flexor resistance. Many patients who are prescribed PD-AFOs are older adults. While PD-AFO bending stiffness should be customized for patients, a method to objectively prescribe this stiffness does not exist. Quantifying natural plantar flexor resistance during non-pathological gait could provide a reference value for objectively prescribing PD-AFO bending stiffness...
March 26, 2018: Gait & Posture
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