bluuebunny/crossref_metadata_2025_split huggingface dataset:
Human embryonic and induced pluripotent stem cells maintain phenotype but alter their metabolism after exposure to ROCK inhibitor
Authors: Vernardis Spyros I. , Terzoudis Konstantinos , Panoskaltsis Nicki , Mantalaris Athanasios 
Published: February 2017

AbstractHuman pluripotent stem cells (hPSCs) are adhesion-dependent cells that require cultivation in colonies to maintain growth and pluripotency. Robust differentiation protocols necessitate single cell cultures that are achieved by use of ROCK (Rho kinase) inhibitors. ROCK inhibition enables maintenance of stem cell phenotype; its effects on metabolism are unknown. hPSCs were exposed to 10 μM ROCK inhibitor for varying exposure times. Pluripotency (TRA-1-81, SSEA3, OCT4, NANOG, SOX2) remained unaffected, until after prolonged exposure (96 hrs). Gas chromatography–mass spectrometry metabolomics analysis identified differences between ROCK-treated and untreated cells as early as 12 hrs. Exposure for 48 hours resulted in reduction in glycolysis, glutaminolysis, the citric acid (TCA) cycle as well as the amino acids pools, suggesting the adaptation of the cells to the new culture conditions, which was also reflected by the expression of the metabolic regulators, mTORC1 and tp53 and correlated with cellular proliferation status. While gene expression and protein levels did not reveal any changes in the physiology of the cells, metabolomics revealed the fluctuating state of the metabolism. The above highlight the usefulness of metabolomics in providing accurate and sensitive information on cellular physiological status, which could lead to the development of robust and optimal stem cell bioprocesses.
Risk profile and HIV testing outcomes of women undergoing community-based testing in San Diego 2008–2014
Authors: Graves Susannah K. , Little Susan J. , Hoenigl Martin 
Published: February 2017

AbstractWomen comprised 19% of new HIV diagnoses in the United States in 2014, with significant racial and ethnic disparities in infection rates. This cross-sectional analysis of women enrolled in a cohort study compares demographics, risk behaviour, and sexually transmitted infections (STI) in those undergoing HIV testing in San Diego County. Data from the most recent screening visit of women undergoing voluntary HIV screening April 2008 –July 2014 was used. HIV diagnosis, risk behaviour and self-reported STIs were compared among women aged ≤24, 25–49, and ≥50, as well as between HIV-infected and uninfected women and between Hispanic and non-Hispanic women. Among the 2535 women included, Hispanic women were less likely than other women to report unprotected vaginal intercourse (p = 0.026) or stimulant drug use (p = 0.026), and more likely to report one or fewer partners (p < 0.0001), but also more likely to report sex with an HIV-infected individual (p = 0.027). New HIV infection was significantly more prevalent among Hispanic women (1.6% vs. 0.2%; p < 0.001). Hispanic women were more likely than other women to be diagnosed with HIV despite significantly lower rates of risk behaviour. Culturally specific risk reduction interventions for Hispanic women should focus on awareness of partner risk and appropriate testing.
Angle-independent pH-sensitive composites with natural gyroid structure
Authors: Xue Ruiyang , Zhang Wang , Sun Peng , Zada Imran , Guo Cuiping , Liu Qinglei , Gu Jiajun , Su Huilan , Zhang Di 
Published: February 2017

AbstractpH sensor is an important and practical device with a wide application in environmental protection field and biomedical industries. An efficient way to enhance the practicability of intelligent polymer composed pH sensor is to subtilize the three-dimensional microstructure of the materials, adding measurable features to visualize the output signal. In this work, C. rubi wing scales were combined with pH-responsive smart polymer polymethylacrylic acid (PMAA) through polymerization to achieve a colour-tunable pH sensor with nature gyroid structure. Morphology and reflection characteristics of the novel composites, named G-PMAA, are carefully investigated and compared with the original biotemplate, C. rubi wing scales. The most remarkable property of G-PMAA is a single-value corresponding relationship between pH value and the reflection peak wavelength (λmax), with a colour distinction degree of 18 nm/pH, ensuring the accuracy and authenticity of the output. The pH sensor reported here is totally reversible, which is able to show the same results after several detection circles. Besides, G-PMAA is proved to be not influenced by the detection angle, which makes it a promising pH sensor with superb sensitivity, stability, and angle-independence.
Magnetic hard gap due to bound magnetic polarons in the localized regime
Authors: Rimal Gaurab , Tang Jinke 
Published: February 2017

AbstractWe investigate the low temperature electron transport properties of manganese doped lead sulfide films. The system shows variable range hopping at low temperatures that crosses over into an activation regime at even lower temperatures. This crossover is destroyed by an applied magnetic field which suggests a magnetic origin of the hard gap, associated with bound magnetic polarons. Even though the gap forms around the superconducting transition temperature of lead, we do not find evidence of this being due to insulator-superconductor transition. Comparison with undoped PbS films, which do not show the activated transport behavior, suggests that bound magnetic polarons create the hard gap in the system that can be closed by magnetic fields.
Primary macrophages and J774 cells respond differently to infection with Mycobacterium tuberculosis
Authors: Andreu Nuria , Phelan Jody , de Sessions Paola F. , Cliff Jacqueline M. , Clark Taane G. , Hibberd Martin L. 
Published: February 2017

AbstractMacrophages play an essential role in the early immune response to Mycobacterium tuberculosis and are the cell type preferentially infected in vivo. Primary macrophages and macrophage-like cell lines are commonly used as infection models, although the physiological relevance of cell lines, particularly for host-pathogen interaction studies, is debatable. Here we use high-throughput RNA-sequencing to analyse transcriptome dynamics of two macrophage models in response to M. tuberculosis infection. Specifically, we study the early response of bone marrow-derived mouse macrophages and cell line J774 to infection with live and γ-irradiated (killed) M. tuberculosis. We show that infection with live bacilli specifically alters the expression of host genes such as Rsad2, Ifit1/2/3 and Rig-I, whose potential roles in resistance to M. tuberculosis infection have not yet been investigated. In addition, the response of primary macrophages is faster and more intense than that of J774 cells in terms of number of differentially expressed genes and magnitude of induction/repression. Our results point to potentially novel processes leading to immune containment early during M. tuberculosis infection, and support the idea that important differences exist between primary macrophages and cell lines, which should be taken into account when choosing a macrophage model to study host-pathogen interactions.
CXCL12/CXCR4 axis induced miR-125b promotes invasion and confers 5-fluorouracil resistance through enhancing autophagy in colorectal cancer
Authors: Yu Xinfeng , Shi Wenna , Zhang Yuhang , Wang Xiaohui , Sun Shiyue , Song Zhiyu , Liu Man , Zeng Qiao , Cui Shuxiang , Qu Xianjun 
Published: February 2017

AbstractThe activation of CXCL12/CXCR4 axis is associated with potential progression of cancer, such as invasion, metastasis and chemoresistance. However, the underlying mechanisms of CXCL12/CXCR4 axis and cancer progression have been poorly explored. We hypothesized that miRNAs might be critical downstream mediators of CXCL12/CXCR4 axis involved in cancer invasion and chemoresistance in CRC. In human CRC cells, we found that the activation of CXCL12/CXCR4 axis promoted epithelial-mesenchymal transition (EMT) and concurrent upregulation of miR-125b. Overexpression of miR-125b robustly triggered EMT and cancer invasion, which in turn enhanced the expression of CXCR4. Importantly, the reciprocal positive feedback loop between CXCR4 and miR-125b further activated the Wnt/β-catenin signaling by targeting Adenomatous polyposis coli (APC) gene. There was a negative correlation of the expression of miR-125b with APC mRNA in paired human colorectal tissue specimens. Further experiments indicated a role of miR-125b in conferring 5-fluorouracil (5-FU) resistance in CRC probably through increasing autophagy both in vitro and in vivo. MiR-125b functions as an important downstream mediator upon the activation of CXCL12/CXCR4 axis that involved in EMT, invasion and 5-FU resistance of CRC. These findings shed a new insight into the role of miR-125b and provide a potential therapeutic target in CRC.
PARP inhibitor increases chemosensitivity by upregulating miR-664b-5p in BRCA1-mutated triple-negative breast cancer
Authors: Song Wei , Tang Lin , Xu Yumei , Xu Jing , Zhang Wenwen , Xie Hui , Wang Shui , Guan Xiaoxiang 
Published: February 2017

AbstractEmerging evidence has shown that adding poly(ADP-ribose) polymerase (PARP) inhibitors to chemotherapy regimens is superior to the control regimens alone in BRCA1-mutated triple-negative breast cancer (TNBC) patients, but their underlying mechanisms have not been fully elucidated. In this study, using miRNA microarray analysis of two BRCA1-mutated TNBC cell lines, we found that miR-664b-5p expression was increased after adding a PARP inhibitor, olaparib, to a carboplatin (CBP) plus gemcitabine (GEM) therapy regimen. Functional assays showed miR-664b-5p overexpression inhibited proliferation, migration and invasion in BRCA1-mutated TNBC cells. CCNE2 was identified as a novel functional target of miR-664b-5p, and CCNE2 knockdown revealed effects similar to those observed with miR-664b-5p overexpression. Both CCNE2 knockdown and miR-664b-5p overexpression significantly increased the chemosensitivity of BRCA1-mutated TNBC cells. In addition, in vivo studies indicated that miR-664b-5p inhibited tumour growth compared with the control in tumour xenograft models, and we also found that CCNE2 expression was inversely correlated with miR-664b-5p expression in 90 TNBC patient samples. In conclusion, miR-664b-5p functions as a tumour suppressor and has an important role in the regulation of PARP inhibitors to increase chemosensitivity by targeting CCNE2. This may be one of the possible mechanisms by which PARP inhibitors increase chemosensitivity in BRCA1-mutated TNBC.
Modified forelimb grip strength test detects aging-associated physiological decline in skeletal muscle function in male mice
Authors: Takeshita Hikari , Yamamoto Koichi , Nozato Satoko , Inagaki Tadakatsu , Tsuchimochi Hirotsugu , Shirai Mikiyasu , Yamamoto Ryohei , Imaizumi Yuki , Hongyo Kazuhiro , Yokoyama Serina , Takeda Masao , Oguro Ryosuke , Takami Yoichi , Itoh Norihisa , Takeya Yasushi , Sugimoto Ken , Fukada So-ichiro , Rakugi Hiromi 
Published: February 2017

AbstractThe conventional forelimb grip strength test is a widely used method to assess skeletal muscle function in rodents; in this study, we modified this method to improve its variability and consistency. The modified test had lower variability among trials and days than the conventional test in young C57BL6 mice, especially by improving the variabilities in male. The modified test was more sensitive than the conventional test to detect a difference in motor function between female and male mice, or between young and old male mice. When the modified test was performed on male mice during the aging process, reduction of grip strength manifested between 18 and 24 months of age at the group level and at the individual level. The modified test was similar to the conventional test in detecting skeletal muscle dysfunction in young male dystrophic mice. Thus, the modified forelimb grip strength test, with its improved validity and reliability may be an ideal substitute for the conventional method.
Alleviation of drought stress by mycorrhizas is related to increased root H2O2 efflux in trifoliate orange
Authors: Huang Yong-Ming , Zou Ying-Ning , Wu Qiang-Sheng 
Published: February 2017

AbstractThe Non-invasive Micro-test Technique (NMT) is used to measure dynamic changes of specific ions/molecules non-invasively, but information about hydrogen peroxide (H2O2) fluxes in different classes of roots by mycorrhiza is scarce in terms of NMT. Effects of Funneliformis mosseae on plant growth, H2O2, superoxide radical (O2·−), malondialdehyde (MDA) concentrations, and H2O2 fluxes in the taproot (TR) and lateral roots (LRs) of trifoliate orange seedlings under well-watered (WW) and drought stress (DS) conditions were studied. DS strongly inhibited mycorrhizal colonization in the TR and LRs, whereas mycorrhizal inoculation significantly promoted plant growth and biomass production. H2O2, O2·−, and MDA concentrations in leaves and roots were dramatically lower in mycorrhizal seedlings than in non-mycorrhizal seedlings under DS. Compared with non-mycorrhizal seedlings, mycorrhizal seedlings had relatively higher net root H2O2 effluxes in the TR and LRs especially under WW, as well as significantly higher total root H2O2 effluxes in the TR and LRs under WW and DS. Total root H2O2 effluxes were significantly positively correlated with root colonization but negatively with root H2O2 and MDA concentrations. It suggested that mycorrhizas induces more H2O2 effluxes of the TR and LRs, thus, alleviating oxidative damage of DS in the host plant.
The Use of Technology for Phone and Face-to-Face Communication After Total Laryngectomy
Authors: Childes Jana M. , Palmer Andrew D. , Fried-Oken Melanie , Graville Donna J. 
Published: February 2017

Purpose
The purpose of this article is to describe the characteristics and experiences of individuals who use technology to support telephone or face-to-face communication after total laryngectomy.

Method
An online questionnaire was used to identify potential participants. Seventeen individuals met inclusion criteria and participated in an in-depth survey. They were compared with a reference group matched for age, gender, and time postsurgery who did not use these technologies. Open-ended responses were summarized.

Results
Compared with the matched reference group, individuals who used technology to support verbal communication had undergone more aggressive cancer treatment and used more communication methods. They were less likely to use an alaryngeal speech method, had greater difficulty over the telephone, and used more repair strategies in face-to-face communication. The 2 groups did not differ significantly in the frequency or success of their communication, however. Open-ended responses revealed great variety with regard to their reasons, purposes, and timing of technology use.

Conclusions
There is a subset of individuals using technology to support verbal communication very successfully after laryngectomy. Usage was not limited to those who were unable to communicate verbally and often continued long after the initial postoperative period in many settings, for various purposes, and in combination with other methods of communication.
Prior History of Feeding–Swallowing Difficulties in Children With Language Impairment
Authors: Malas Kathy , Trudeau Natacha , Giroux Marie-Claude , Gauthier Lisanne , Poulin Simone , McFarland David H. 
Published: February 2017

PurposeThis study updated and extended our previous investigation (Malas et al., 2015) of feeding–swallowing difficulties and concerns (FSCs) in children with language impairments (LI) by using more stringent inclusion criteria and targeting children earlier in the care delivery pathway.MethodRetrospective analyses were performed on the clinical files of 29 children (average age: 60 months,SD= 9.0) diagnosed as having LI using standardized testing, nonstandardized testing and final speech-language pathologist judgment. The files of children born prematurely or with a history of anatomical, structural, neurodevelopmental, cognitive, sensory, motor, or speech disorders were excluded. Literature-based indicators were used to determine the prevalence of difficulties in sucking, food transition, food selectivity, and salivary control. Values were compared with the general population estimate of Lindberg et al. (1992).ResultsA significantly higher percentage of histories of FSCs (48%) were found in the files of children with LI when compared with the population estimate (χ2= 13.741,df= 1,p< .001). Difficulties in food transition (31%) and food selectivity (14%) were the most frequent. Data confirm and extend our previous findings and suggest that a previous history of FSCs may characterize children with LI early in their care delivery pathway.
Deficits in Coordinative Bimanual Timing Precision in Children With Specific Language Impairment
Authors: Vuolo Janet , Goffman Lisa , Zelaznik Howard N. 
Published: February 2017

Purpose
Our objective was to delineate components of motor performance in specific language impairment (SLI); specifically, whether deficits in timing precision in one effector (unimanual tapping) and in two effectors (bimanual clapping) are observed in young children with SLI.

Method
Twenty-seven 4- to 5-year-old children with SLI and 21 age-matched peers with typical language development participated. All children engaged in a unimanual tapping and a bimanual clapping timing task. Standard measures of language and motor performance were also obtained.

Results

No group differences in timing variability were observed in the unimanual tapping task. However, compared with typically developing peers, children with SLI were more variable in their timing precision in the bimanual clapping task. Nine of the children with SLI performed greater than 1
SD
below the mean on a standardized motor assessment. The children with low motor performance showed the same profile as observed across all children with SLI, with unaffected unimanual and impaired bimanual timing precision.

Conclusions
Although unimanual timing is unaffected, children with SLI show a deficit in timing that requires bimanual coordination. We propose that the timing deficits observed in children with SLI are associated with the increased demands inherent in bimanual performance.
Evolution over time of the Milky Way’s disc shape
Authors: Amôres E. B. , Robin A. C. , Reylé C. 
Published: February 2017

Context. Galactic structure studies can be used as a path to constrain the scenario of formation and evolution of our Galaxy. The dependence with the age of stellar population parameters would be linked with the history of star formation and dynamical evolution.
Aims. We aim to investigate the structures of the outer Galaxy, such as the scale length, disc truncation, warp and flare of the thin disc and study their dependence with age by using 2MASS data and a population synthesis model (the so-called Besançon Galaxy Model).
Methods. We have used a genetic algorithm to adjust the parameters on the observed colour–magnitude diagrams at longitudes 80° ≤ ℓ ≤ 280° for | b | ≤ 5.5°. We explored parameter degeneracies and uncertainties.
Results. We identify a clear dependence of the thin disc scale length, warp and flare shapes with age. The scale length is found to vary between 3.8 kpc for the youngest to about 2 kpc for the oldest. The warp shows a complex structure, clearly asymmetrical with a node angle changing with age from approximately 165° for old stars to 195° for young stars. The outer disc is also flaring with a scale height that varies by a factor of two between the solar neighbourhood and a Galactocentric distance of 12 kpc.
Conclusions. We conclude that the thin disc scale length is in good agreement with the inside-out formation scenario and that the outer disc is not in dynamical equilibrium. The warp deformation with time may provide some clues to its origin.
A Fatal Sinogenic Brain Abscess in Pregnancy: Case Report and Review of Literature
Authors: Bahrami Reza , Safari Hossein 
Published: February 2017

AbstractCerebral abscess is an extremely rare complication of pregnancy. Among reported cases of pregnancy brain abscess, most patients have shown a good neurologic outcome. Herein, we present a 25-year-old pregnant woman at 28 weeks' gestation with acute loss of consciousness and sudden brain herniation. The patient underwent an emergency craniotomy and brain abscess was evacuated, but she died after surgery. Rapid deterioration and fatal brain herniation were unique among other reports of sinogenic brain abscess during pregnancy.
Influence of Dyslipidemia on the Quality of Sexual Life in Women in the Menacme using a Combined Oral Contraceptive
Authors: Strufaldi Rodolfo , Pompei Luciano , Steiner Marcelo , Fernandes César 
Published: February 2017

Purpose Female sexual dysfunction is a complex and common condition that affects women, and the relationship between sexual function and dyslipidemia is poorly studied. This study aims to assess this relationship in the reproductive life women in the menacme who use combined oral contraceptives (COCs).
Methods A total of 49 healthy women who were sexually active received COC pills that contained ethinylestradiol 30 mcg (EE30) plus levonorgestrel 150 mcg (LNG150). The women were divided into two groups according to their lipid profiles. Dyslipidemia was defined as a high-density lipoprotein (HDL) level < 50 mg/dL or a low-density lipoprotein (LDL) level > 130 mg/dL. Sexual function was assessed using the Female Sexual Function Index (FSFI) Questionnaire. Lipid and lipoprotein parameters were obtained at baseline and after the sixth cycle.
Results After six cycles of the COCs, the total cholesterol and LDL cholesterol levels in the women with a LDL level > 130 mg/dL decreased by 14.7% and 22.1% respectively. In the women with a HDL level < 50 mg/dL at baseline, the HDL level increased by 15.5% at the end of the study. The arousal and orgasm domains and the FSFI total scores significantly increased in women with and without dyslipidemia. The desire and satisfaction domains increased only in the group without dyslipidemia at the end of the treatment period.
Conclusions The EE30/LNG150 formulation increased the sexual function and it was only positively correlated with the HDL cholesterol level. These data indicated a low correlation between sexual function and the changes in the lipid and lipoprotein metabolism.
Metabolische Knochenkrankheit: Osteomalazie
Authors: Reuss-Borst Monika , Lange Uwe 
Published: February 2017

ZusammenfassungDie Osteomalazie ist eine seltene Erkrankung des Knochenstoffwechsels, die mit einer verminderten Knochenmineralisation einhergeht. Ursächlich sind meist ein Vitamin-D-Mangel oder eine Störung des Phosphatstoffwechsels (sog. hypophosphatämische Osteomalazie). Leitsymptome der Osteomalazie sind dumpfe, lokalisierte oder auch generalisierte Knochenschmerzen, Muskelschwäche und -krämpfe sowie eine gehäufte Sturzneigung. Differenzialdiagnostisch müssen vor allem rheumatische Erkrankungen wie z. B. Polymyalgia rheumatica, rheumatoide Arthritis, Myositiden und Fibromyalgie-Syndrom ausgeschlossen werden. Im Labor sind eine Erhöhung der alkalischen Phosphatase sowie ein erniedrigtes Serum-Phosphat und/oder 25-OH-Vitamin D3 für eine Osteomalazie wegweisend. Die Übergänge von einem Vitamin D-Mangel zur manifesten Osteomalazie sind fließend. In unklaren Fällen kann die Diagnose einer Osteomalazie durch eine Knochenbiopsie aus dem Beckenkamm gesichert werden. Die Therapie umfasst im Wesentlichen die Gabe von Vitamin D und Calcium, bei Resorptionsproblemen ggf. auch parenteral. Bei Phosphatverlust-Syndromen ist die Substitution von Phosphat meist Therapie der Wahl.