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https://www.readbyqxmd.com/read/27922234/long-term-azithromycin-therapy-in-patients-with-cystic-fibrosis
#1
Nagehan Emiralioğlu, Zeynelabidin Öztürk, Ebru Yalçın, Deniz Doğru, Uğur Özçelik, Nural Kiper
Inflammation is a central contributor to the pathogenesis of cystic fibrosis (CF) pulmonary disease; so limiting the excessive production of inflammatory mediators represents a major therapeutic strategy for slowing the decline in lung function and improving survival. The macrolide antibiotic azithromycin (AZM) has anti-inflammatory properties and immunomodulatory effects that may be beneficial in CF. The aim of this study was to document the long term use of AZM effect on pulmonary function, nutritional status and number of pulmonary exacerbations in patients with CF...
2016: Turkish Journal of Pediatrics
https://www.readbyqxmd.com/read/27922194/pharmacodynamic-response-profiles-of-anxiolytic-and-sedative-drugs
#2
Xia Chen, Freerk Broeyer, Marieke de Kam, Joke Baas, Adam Cohen, Joop van Gerven
INTRODUCTION: Centrally-acting acutely anxiolytic drugs, like benzodiazepines, barbiturates and gabapentinoids, affect various central nervous system (CNS) functions, which reflect not only their anxiolytic effects but also neuropsychological side-effects. To validate the pharmacodynamic biomarkers for GABA-ergic anxiolytics, this study determined the pharmacodynamics of two anxiolytics and a non-anxiolytic control and linked them to their anxiolytic and sedative effects, during an anxiety-challenge study day...
December 6, 2016: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/27922165/excess-mortality-during-the-warm-summer-of-2015-in-switzerland
#3
Ana M Vicedo-Cabrera, Martina S Ragettli, Christian Schindler, Martin Röösli
QUESTION UNDER STUDY: In Switzerland, summer 2015 was the second warmest summer for 150 years (after summer 2003). For summer 2003, a 6.9% excess mortality was estimated for Switzerland, which corresponded to 975 extra deaths. The impact of the heat in summer 2015 in Switzerland has not so far been evaluated. METHODS: Daily age group-, gender- and region-specific all-cause excess mortality during summer (June-August) 2015 was estimated, based on predictions derived from quasi-Poisson regression models fitted to the daily mortality data for the 10 previous years...
2016: Swiss Medical Weekly
https://www.readbyqxmd.com/read/27922143/attitudes-and-concerns-of-diabetic-patients-towards-bariatric-surgery-as-treatment-of-diabetes
#4
Hui Wen Chua, Hui Jun Zhou, Chin Meng Khoo, Asim Shabbir, Davide Lomanto, Jimmy By So
INTRODUCTION: Bariatric surgery is increasingly recognised as an effective treatment for type 2 diabetes that significantly improves glycaemic control, even achieving remission. This study examined perceptions and concerns of diabetic patients towards bariatric surgery as a treatment option for diabetes. MATERIALS AND METHODS: A total of 150 patients were recruited from a specialised diabetic outpatient clinic and completed a questionnaire (items were rated on a Likert scale from slightly important [lowest score of 1] to extremely important [maximum score of 5])...
November 2016: Annals of the Academy of Medicine, Singapore
https://www.readbyqxmd.com/read/27922132/wideband-helicity-dependent-spoof-surface-plasmon-polaritons-coupling-metasurface-based-on-dispersion-design
#5
Guoxiang Dong, Hongyu Shi, Yuchen He, Anxue Zhang, Xiaoyong Wei, Yongyong Zhuang, Bai Du, Song Xia, Zhuo Xu
The surface plasmon polaritons (SPPs) have many potential application due to their local field enhancement and sub-wavelength characteristics. Recently, the gradient metasurface is introduced to couple the spoof SPPs in microwave frequency band. One of the most important issue which should be solved is the narrowband of spoof SPPs coupling on the gradient metasurface. Here, the metasurface is proposed to achieve the wideband helicity dependent directional spoof SPPs coupling for circular polarized light. Our research show that the coupling frequency of spoof SPPs on the gradient metasurface is determined by the dispersion of the metasurface, so the coupling frequency can be controlled by dispersion design...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922121/sex-differences-in-prevalence-of-and-risk-factors-for-carotid-plaque-among-adults-a-population-based-cross-sectional-study-in-rural-china
#6
Wei Zhao, Yanan Wu, Min Shi, Lingling Bai, Jun Tu, Zaiyu Guo, Rongcai Jiang, Jianning Zhang, Xianjia Ning, Jinghua Wang
Although the associations between carotid plaque and cardiovascular disease risk factors have been identified in previous studies, there is limited information on sex-related differences in factors associated with the development of carotid plaque. We aimed to determine sex differences in the prevalence of carotid plaque and associated risk factors in rural China. A total of 3,789 subjects aged ≥45 years without history of stroke or cardiovascular disease were recruited to the study. B-mode ultrasonography was performed to determine the presence of carotid plaque...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922021/the-colored-hanbury-brown-twiss-effect
#7
B Silva, C Sánchez Muñoz, D Ballarini, A González-Tudela, M de Giorgi, G Gigli, K West, L Pfeiffer, E Del Valle, D Sanvitto, F P Laussy
The Hanbury Brown-Twiss effect is one of the celebrated phenomenologies of modern physics that accommodates equally well classical (interferences of waves) and quantum (correlations between indistinguishable particles) interpretations. The effect was discovered in the late thirties with a basic observation of Hanbury Brown that radio-pulses from two distinct antennas generate signals on the oscilloscope that wiggle similarly to the naked eye. When Hanbury Brown and his mathematician colleague Twiss took the obvious step to propose bringing the effect in the optical range, they met with considerable opposition as single-photon interferences were deemed impossible...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921994/the-structure-of-sv40-large-t-hexameric-helicase-in-complex-with-at-rich-origin-dna
#8
Dahai Gai, Damian Wang, Shu-Xing Li, Xiaojiang S Chen
DNA replication is a fundamental biological process. The initial step in eukaryotic DNA replication is the assembly of the pre-initiation complex, including the formation of two head-to-head hexameric helicases around the replication origin. How these hexameric helicases interact with their origin dsDNA remains unknown. Here, we report the co-crystal structure of the SV40 Large-T Antigen (LT) hexameric helicase bound to its origin dsDNA. The structure shows that the six subunits form a near-planar ring that interacts with the origin, so that each subunit makes unique contacts with the DNA...
December 6, 2016: ELife
https://www.readbyqxmd.com/read/27921459/investigation-of-the-derivatization-conditions-for-gc-ms-metabolomics-of-biological-samples
#9
Georgios Moros, Anastasia Chrysovalantou Chatziioannou, Helen G Gika, Nikolaos Raikos, Georgios Theodoridis
AIM: Metabolomics applications represent an emerging field where significant efforts are directed. Derivatization consists prerequisite for GC-MS metabolomics analysis. METHODS: Common silylation agents were tested for the derivatization of blood plasma. Optimization of methoxyamination and silylation reactions was performed on a mixture of reference standards, consisting of 46 different metabolites. Stability of derivatized metabolites was tested at 4°C. RESULTS: Optimum results were achieved using N-methyl-N-(trimethylsilyl)trifluoroacetamide...
January 2017: Bioanalysis
https://www.readbyqxmd.com/read/27921433/-is-glucosis-only-basic-energy-substrate
#10
Luboš Sobotka
At present time glucose is primarily considered as basic energy substrate. Therefore, it is recommended to give amount of glucose which is necessary for oxidation and energy production. As critical illness is connected with so-called insulin resistance, it is recommended to reduce the glucose dose and maintain normal blood glucose. Glucose, however, may not only be the principal energy substrate but also the substrate necessary for many metabolic reactions, which are essential for normal reactivity and survival...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27921430/-obstructive-sleep-apnoea-and-type-2-diabetes-mellitus
#11
Andrea Plíhalová, Kateřina Westlake, Jan Polák
Obstructive sleep apnoea syndrome (OSA) is a disease very frequently occurring in people with type 2 diabetes, that significantly increases cardiovascular morbidity and mortality. In a number of studies, OSA has been identified as an independent risk factor for the development of insulin resistance, glucose intolerance and type 2 diabetes mellitus. Disorders of glucose homeostasis in patients with OSA are probably mediated by chronic intermittent hypoxia and/or sleep fragmentation through activation of the sympathetic nervous system, the hypothalamic-pituitary-adrenal stress axis, pro-inflammatory paths or oxidative stress...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27921396/frequency-and-type-of-inheritable-mutations-induced-by-%C3%AE-rays-in-rice-as-revealed-by-whole-genome-sequencing
#12
Shan Li, Yun-Chao Zheng, Hai-Rui Cui, Hao-Wei Fu, Qing-Yao Shu, Jian-Zhong Huang
Mutation breeding is based on the induction of genetic variations; hence knowledge of the frequency and type of induced mutations is of paramount importance for the design and implementation of a mutation breeding program. Although γ ray irradiation has been widely used since the 1960s in the breeding of about 200 economically important plant species, molecular elucidation of its genetic effects has so far been achieved largely by analysis of target genes or genomic regions. In the present study, the whole genomes of six γ-irradiated M2 rice plants were sequenced; a total of 144-188 million high-quality (Q>20) reads were generated for each M2 plant, resulting in genome coverage of >45 times for each plant...
2016: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/27921339/perceptual-narrowing-towards-adult-faces-is-a-cross-cultural-phenomenon-in-infancy-a-behavioral-and-near-infrared-spectroscopy-study-with-japanese-infants
#13
Megumi Kobayashi, Viola Macchi Cassia, So Kanazawa, Masami K Yamaguchi, Ryusuke Kakigi
Recent data showed that, in Caucasian infants, perceptual narrowing occurs for own-race adult faces between 3 and 9 months of age, possibly as a consequence of the extensive amount of social and perceptual experience accumulated with caregivers and/or other adult individuals of the same race of the caregiver. The neural correlates of this developmental process remain unexplored, and it is currently unknown whether perceptual tuning towards adult faces can be extended to other cultures. To this end, in the current study we tested the ability of 3- and 9-month-old Japanese infants to discriminate among adult and infant Asian faces in a visual familiarization task (Experiment 1), and compared 9-month-olds' cerebral hemodynamic responses to adult and infant faces as measured by near-infrared spectroscopy (NIRS) (Experiment 2)...
December 5, 2016: Developmental Science
https://www.readbyqxmd.com/read/27921334/synacton-and-individual-activity-of-synthetic-and-natural-corticotropins
#14
T V Vyunova, L A Andreeva, K V Shevchenko, N F Myasoedov
Short endogenous peptides represent one of the most important constituents of the mammalian body's general regulatory system. Some synthesized analogs and modified natural peptides (eg, corticotropins) also show high biological activity. Nevertheless, the mechanism of action of regulatory peptides remains unclear. To explain the effects of peptides of intermolecular processes, the hypothesis that a synactonal mechanism underlies the action of regulatory peptides, exemplified by the heptapeptide Semax, has been proposed...
December 6, 2016: Journal of Molecular Recognition: JMR
https://www.readbyqxmd.com/read/27921326/correlation-of-genetic-results-with-testicular-histology-hormones-and-sperm-retrieval-in-nonobstructive-azoospermia-patients-with-testis-biopsy
#15
W Liu, X Gao, G Ma, L Yan, T Chen, T Li, R-M Yu, J-L Ma
To investigate the frequency and types of genetic results in different testicular histology of patients with nonobstructive azoospermia (NOA), and correlated with hormones and sperm retrieval (SR), a retrospective study was conducted in 286 Chinese NOA patients who underwent testis biopsy and 100 age-matched fertile men as the control group. Chromosome karyotype analyses were performed by the peripheral blood chromosome G-band detection method. Screening of Y chromosome microdeletions of azoospermia factor (AZF) region was performed by polymerase chain reaction (PCR) amplification of 11 sequence-tagged sites (STS)...
December 6, 2016: Andrologia
https://www.readbyqxmd.com/read/27921231/the-cell-and-protoplasm-as-container-object-and-substance-1835-1861
#16
Daniel Liu
This article revisits the development of the protoplasm concept as it originally arose from critiques of the cell theory, and examines how the term "protoplasm" transformed from a botanical term of art in the 1840s to the so-called "living substance" and "the physical basis of life" two decades later. I show that there were two major shifts in biological materialism that needed to occur before protoplasm theory could be elevated to have equal status with cell theory in the nineteenth century. First, I argue that biologists had to accept that life could inhere in matter alone, regardless of form...
December 5, 2016: Journal of the History of Biology
https://www.readbyqxmd.com/read/27921229/an-extracellular-proteasome-releases-endostatin-from-human-collagen-xviii
#17
Maria L V Reiss-Pistilli, Detlef Schuppan, Madalena M S Barroso, Iranaia Assunção-Miranda, Shirley Farias, Letícia Lery, Michael Bauer, Luiz Juliano, Maria A Juliano, Tatiana Coelho-Sampaio
Endostatin is a potent anti-angiogenic and anti-tumor protein capable of regressing tumors without inducing acquired resistance. Since it is a fragment of the parental molecule, collagen XVIII, its endogenous production depends on the activity of a specific proteolytic enzyme. While such an enzyme has been described in mice, a human counterpart has not been identified so far. Here, we searched for this enzyme by using a fluorescence resonance energy transfer peptide containing the cleavage site of human collagen XVIII...
December 5, 2016: Angiogenesis
https://www.readbyqxmd.com/read/27921211/helix-o-modulates-voltage-dependency-of-clc-1
#18
Ju Yong Seong, Kotdaji Ha, Chansik Hong, Jongyun Myeong, Hyun-Ho Lim, Dongki Yang, Insuk So
The chloride channel (CLC) family of proteins consists of channels and transporters that share similarities in architecture and play essential roles in physiological functions. Among the CLC family, CLC-1 channels have the representative homodimeric double-barreled structure carrying two gating processes. One is protopore gating that acts on each pore independently by glutamate residue (Eext). The other is common gating that closes both pores simultaneously in association with large conformational changes across each subunit...
December 5, 2016: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/27921196/danshen-injection-as-adjuvant-treatment-for-unstable-angina-pectoris-a-systematic-review-and-meta-analysis
#19
Jia-Rui Wu, Shi Liu, Xiao-Meng Zhang, Bing Zhang
OBJECTIVE: To systematically evaluate the clinical effectiveness and safety of Danshen Injection (, DS) as one adjuvant treatment for conventional therapy with Western medicine (WM) for unstable angina pectoris (UAP). METHODS: Using literature databases, a thorough and systematic retrieval of randomized controlled trials (RCTs) comparing DS plus WM with WM was conducted from inception to April 2015. The extracted data from included studies was analyzed by Review Manager 5...
December 5, 2016: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/27921173/day-to-day-variations-in-the-amplitude-of-the-soil-temperature-cycle-and-impact-on-adult-eclosion-timing-of-the-onion-fly
#20
Kazuhiro Tanaka, Yasuhiko Watari
The onion fly Delia antiqua advances its eclosion timing with decreasing temperature amplitude to compensate for a depth-dependent phase delay of the zeitgeber. To elucidate whether or not naturally occurring day-to-day variations in the amplitude of soil temperature cycle disturb this compensatory response, we monitored daily variations in the temperature amplitude in natural soils and evaluated the impact on adult eclosion timing. Our results indicated that both median and variance of the soil temperature amplitude become smaller as depth increases...
December 5, 2016: International Journal of Biometeorology
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