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https://www.readbyqxmd.com/read/28794022/potent-in-vivo-nk-cell-mediated-elimination-of-hiv-1-infected-cells-mobilized-by-a-gp120-bispecific-and-hexavalent-broadly-neutralizing-fusion-protein
#1
Ariola Bardhi, Yanling Wu, Weizao Chen, Zhongyu Zhu, Jian Hua Zheng, Hing Wong, Emily Jeng, Jennifer Jones, Christina Ochsenbauer, John C Kappes, Dimiter S Dimitrov, Tianlei Ying, Harris Goldstein
Antibodies bound to HIV-1 envelope protein expressed by infected cells mobilize antibody dependent cellular cytotoxicity (ADCC) to eliminate the HIV-1-infected cells and thereby suppress HIV-1 infection and delay disease progression. Studies treating HIV-1-infected individuals with latency reactivation agents to reduce their latent HIV-1 reservoirs indicated that their HIV-1-specific immune responses were insufficient to effectively eliminate the reactivated latent HIV-1-infected T cells. Mobilization of ADCC may facilitate elimination of reactivated latent HIV-1-infected cells to deplete the HIV-1 reservoir and contribute to functional HIV-1 cure...
August 9, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28778055/the-effect-of-the-ketogenic-diet-on-the-developing-skeleton
#2
Peter J Simm, Jillian Bicknell-Royle, Jock Lawrie, Judy Nation, Kellie Draffin, Karen G Stewart, Fergus J Cameron, Ingrid E Scheffer, Mark T Mackay
The ketogenic diet (KD) is a medically supervised, high fat, low carbohydrate and restricted protein diet which has been used successfully in patients with refractory epilepsy. Only one published report has explored its effect on the skeleton. We postulated that the KD impairs skeletal health parameters in patients on the KD. Patients commenced on the KD were enrolled in a prospective, longitudinal study, with monitoring of Dual-energy X-ray absorptiometry (DXA) derived bone parameters including bone mineral content and density (BMD)...
July 26, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28778021/neural-correlates-of-obstacle-negotiation-in-older-adults-an-fnirs-study
#3
Michelle Chen, Sarah Pillemer, Sarah England, Meltem Izzetoglu, Jeannette R Mahoney, Roee Holtzer
Older adults are less efficient at avoiding obstacles compared to young adults, especially under attention-demanding conditions. Using functional near-infrared-spectroscopy (fNIRS), recent studies implicated the prefrontal cortex (PFC) in cognitive control of locomotion, notably under dual-task walking conditions. The neural substrates underlying Obstacle Negotiation (ON), however, have not been established. The current study determined the role of the PFC in ON during walking in seniors. Non-demented older adults (n=90; mean age=78...
July 18, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28775333/dual-specificity-tyrosine-phosphorylation-regulated-kinase-1a-gene-transcription-is-regulated-by-myocyte-enhancer-factor-2d
#4
Pin Wang, Luanluan Wang, Long Chen, Xiulian Sun
Dual-specificity tyrosine-phosphorylation regulated kinase 1A (DYRK1A) is localized in the Down syndrome critical region of chromosome 21. As a candidate gene responsible for learning defects associated with Down syndrome and Alzheimer's disease (AD), DYRK1A has been implied to play pivotal roles in cell proliferation and brain development. MEF2D, a member of the myocyte-specific enhancer factor 2 (MEF2) family of transcription factors, was proved to be in control of neuronal cell differentiation and development...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28769106/lipoxin-a4-and-its-analog-suppress-inflammation-by-modulating-hmgb1-translocation-and-expression-in-psoriasis
#5
Xinxin Liu, Xin Wang, Xiaoru Duan, Devesh Poorun, Juntao Xu, Song Zhang, Lu Gan, Mengwen He, Ke Zhu, Zhangyin Ming, Feng Hu, Hongxiang Chen
Psoriasis is a chronic inflammatory skin disease that affects 2-3% of the global population, and there is still no known possibility of a cure. Lipoxin A4 (LXA4), an endogenous lipoxygenase-derived eicosanoid mediator, has potent dual pro-resolving and anti-inflammatory properties. BML-111 (5(S)-6(R)-7-trihydroxyheptanoic acid methyl ester), a lipoxin receptor agonist, has been previously confirmed to be equivalent to LXA4 in the anti-inflammatory processes. High mobility group box 1 (HMGB1) serves as an inflammatory cytokine when secreted extracellularly in psoriatic lesions and is involved in the development of psoriasis...
August 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28767216/room-temperature-fabrication-of-high-performance-amorphous-in-ga-zn-o-al2o3-thin-film-transistors-on-ultra-smooth-and-clear-nanopaper
#6
Honglong Ning, Yong Zeng, Yudi Kuang, Zeke Zheng, Panpan Zhou, Rihui Yao, Hongke Zhang, Wenzhong Bao, Gang Chen, Zhiqiang Fang, Junbiao Peng
Integrating biodegradable cellulose nanopaper into oxide thin-film transistors (TFTs) for next generation flexible and green flat panel displays has attracted great interests because it offers a viable solution to address the rapid increase of electronic waste that poses a growing ecological problem. However, a compromise between device performance and thermal annealing remains an obstacle for achieving high-performance nanopaper TFTs. In this study, a high-performance bottom-gate IGZO/Al2O3 TFT with a dual-layer channel structure was initially fabricated on a highly transparent, clear, and ultra-smooth nanopaper substrate via conventional physical vapor deposition approaches, without a further thermal annealing processing...
August 2, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28766490/validated-analytical-methods-for-the-determination-of-drugs-used-in-the-treatment-of-hyperemesis-gravidarum-in-multiple-formulations
#7
Ahmed S Saad, Ibrahim A Naguib, Mohammed E Draz, Hala E Zaazaa, Adel S Lashien
Quantitative multicomponent analysis is considered an analytical goal to save time and cost in analysis. Hence, this work aimed to provide sensitive and selective UV-spectrophotometric, chemometric manipulation, and ultra-performance LC (UPLC) methods for the determination of well-known coformulated antiemetics used in pregnancy, namely pyridoxine HCl (PYR), meclozine HCl, and cyclizine. The developed UV-spectrophotometric methods are dual wavelength in ratio spectra and first derivative of the ratio spectra with which PYR was determined selectively at 290...
August 1, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28762383/clinical-factors-associated-with-c-reactive-protein-in-chronic-spinal-cord-injury
#8
R L Goldstein, P Walia, M Teylan, A A Lazzari, C G Tun, J E Hart, E Garshick
STUDY DESIGN: Cross-sectional study. OBJECTIVES: Determine clinical factors associated with plasma C-reactive protein (CRP) in persons with chronic spinal cord injury (SCI). SETTING: Veterans Affairs Medical Center in Boston, MA, USA. METHODS: Participants provided a blood sample, completed a respiratory health questionnaire and underwent dual X-ray absorptiometry (DXA) to assess total and regional body fat. Linear regression models were used to assess cross-sectional associations with plasma CRP...
August 1, 2017: Spinal Cord
https://www.readbyqxmd.com/read/28760604/application-of-quality-by-design-concept-to-develop-a-dual-gradient-elution-stability-indicating-method-for-cloxacillin-forced-degradation-studies-using-combined-mixture-process-variable-models
#9
Xia Zhang, Changqin Hu
Penicillins are typical of complex ionic samples which likely contain large number of degradation-related impurities (DRIs) with different polarities and charge properties. It is often a challenge to develop selective and robust high performance liquid chromatography (HPLC) methods for the efficient separation of all DRIs. In this study, an analytical quality by design (AQbD) approach was proposed for stability-indicating method development of cloxacillin. The structures, retention and UV characteristics rules of penicillins and their impurities were summarized and served as useful prior knowledge...
July 22, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28759587/older-adults-must-hurry-at-pedestrian-lights-a-cross-sectional-analysis-of-preferred-and-fast-walking-speed-under-single-and-dual-task-conditions
#10
Patrick Eggenberger, Sara Tomovic, Thomas Münzer, Eling D de Bruin
Slow walking speed is strongly associated with adverse health outcomes, including cognitive impairment, in the older population. Moreover, adequate walking speed is crucial to maintain older pedestrians' mobility and safety in urban areas. This study aimed to identify the proportion of Swiss older adults that didn't reach 1.2 m/s, which reflects the requirements to cross streets within the green-yellow phase of pedestrian lights, when walking fast under cognitive challenge. A convenience sample, including 120 older women (65%) and men, was recruited from the community (88%) and from senior residences and divided into groups of 70-79 years (n = 59, 74...
2017: PloS One
https://www.readbyqxmd.com/read/28756947/two-element-transcriptional-regulation-in-the-canonical-wnt-pathway
#11
Kibeom Kim, Jaehyoung Cho, Thomas S Hilzinger, Harry Nunns, Andrew Liu, Bryan E Ryba, Lea Goentoro
The canonical Wnt pathway regulates numerous fundamental processes throughout development and adult physiology and is often disrupted in diseases [1-4]. Signal in the pathway is transduced by β-catenin, which in complex with Tcf/Lef regulates transcription. Despite the many processes that the Wnt pathway governs, β-catenin acts primarily on a single cis element in the DNA, the Wnt-responsive element (WRE), at times potentiated by a nearby Helper site. In this study, working with Xenopus, mouse, and human systems, we identified a cis element, distinct from WRE, upon which β-catenin and Tcf act...
August 7, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28748529/dual-role-of-monocyte-derived-dendritic-cells-in-trypanosoma-cruzi-infection
#12
Carolina V Poncini, Stella M González-Cappa
Pathogens can cause inflammation when inoculated into the skin. The vector-transmitted protozoan parasite Trypanosoma cruzi induces poor cellular-infiltration and disseminates, causing high mortality in the experimental model. Here, we characterized the inflammatory foci at the parasite inoculation site and secondary lymphoid organs using a murine system. While no macrophages and few neutrophils and monocytes (Mo) were recruited into the skin, T. cruzi infection elicited the mobilization of Ly6C(+) Mo to draining lymph nodes and spleen...
July 27, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28743075/preference-of-arabidopsis-thaliana-gh3-5-acyl-amido-synthetase-for-growth-versus-defense-hormone-acyl-substrates-is-dictated-by-concentration-of-amino-acid-substrate-aspartate
#13
Rebecca Mackelprang, Rachel A Okrent, Mary C Wildermuth
The GH3 family of adenylating enzymes conjugate acyl substrates such as the growth hormone indole-3-acetic acid (IAA) to amino acids via a two-step reaction of acyl substrate adenylation followed by amino acid conjugation. Arabidopsis thaliana GH3.5 was previously shown to be unusual in that it could adenylate both IAA and the defense hormone salicylic acid (SA, 2-hydroxybenzoate). Our detailed studies of the kinetics of GH3.5 on a variety of auxin and benzoate substrates provides insight into the acyl preference and reaction mechanism of GH3...
July 22, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28740442/techniques-used-for-the-screening-of-hemoglobin-levels-in-blood-donors-current-insights-and-future-directions
#14
REVIEW
Rajendra Chaudhary, Anju Dubey, Atul Sonker
Blood donor hemoglobin (Hb) estimation is an important donation test that is performed prior to blood donation. It serves the dual purpose of protecting the donors' health against anemia and ensuring good quality of blood components, which has an implication on recipients' health. Diverse cutoff criteria have been defined world over depending on population characteristics; however, no testing methodology and sample requirement have been specified for Hb screening. Besides the technique, there are several physiological and methodological factors that affect accuracy and reliability of Hb estimation...
2017: Journal of Blood Medicine
https://www.readbyqxmd.com/read/28738022/werner-syndrome-a-model-for-sarcopenia-due-to-accelerated-aging
#15
Masaya Yamaga, Minoru Takemoto, Mayumi Shoji, Kenichi Sakamoto, Masashi Yamamoto, Takahiro Ishikawa, Masaya Koshizaka, Yoshiro Maezawa, Kazuki Kobayashi, Koutaro Yokote
Werner syndrome (WS) is a rare inheritable progeroid syndrome caused by a mutation in the WRN gene. Although WS has been described as a characteristic appearance of very slender extremities with a stocky trunk, few studies have investigated the loss of muscle mass, fat mass distribution (body composition), and mobility according to age and sex. Therefore, the aim of this study was to precisely describe the body composition in WS. Nine Japanese patients with WS (four males and five females; mean age 48±8.8 years) were recruited...
July 19, 2017: Aging
https://www.readbyqxmd.com/read/28737123/development-and-validation-of-eco-friendly-liquid-chromatographic-and-spectrophotometric-methods-for-simultaneous-determination-of-coformulated-drugs-phenylephrine-hydrochloride-and-prednisolone-acetate
#16
Nadia M Mostafa, Ghada M Elsayed, Nagiba Y Hassan, Dina A El Mously
Five simple, sensitive, and eco-friendly LC and UV spectrophotometric methods have been developed for the simultaneous determination of phenylephrine hydrochloride (PHE) and prednisolone acetate (PRD) in their combined dosage form. The first method was reversed-phase (RP) LC using methanol-water-heptane-1-sulfonic acid sodium salt (75 + 25 + 0.1, v/v/w) as a mobile phase. Separation was achieved using an XSelect HSS reversed-phase C18 analytical column (250 × 4.6 mm, 5µm). The flow rate was 1.0 mL/min and UV detection was done at 230 nm...
July 24, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28732080/age-related-decrements-in-dual-task-performance-comparison-of-different-mobility-and-cognitive-tasks-a-cross-sectional-study
#17
Paolo Riccardo Brustio, Daniele Magistro, Massimiliano Zecca, Emanuela Rabaglietti, Monica Emma Liubicich
This cross-sectional study investigated the age-related differences in dual-task performance both in mobility and cognitive tasks and the additive dual-task costs in a sample of older, middle-aged and young adults. 74 older adults (M = 72.63±5.57 years), 58 middle-aged adults (M = 46.69±4.68 years) and 63 young adults (M = 25.34±3.00 years) participated in the study. Participants performed different mobility and subtraction tasks under both single- and dual-task conditions. Linear regressions, repeated-measures and one-way analyses of covariance were used, The results showed: significant effects of the age on the dual and mobility tasks (p<0...
2017: PloS One
https://www.readbyqxmd.com/read/28724735/dual-function-of-the-pectoral-girdle-for-feeding-and-locomotion-in-white-spotted-bamboo-sharks
#18
Ariel L Camp, Bradley Scott, Elizabeth L Brainerd, Cheryl D Wilga
Positioned at the intersection of the head, body and forelimb, the pectoral girdle has the potential to function in both feeding and locomotor behaviours-although the latter has been studied far more. In ray-finned fishes, the pectoral girdle attaches directly to the skull and is retracted during suction feeding, enabling the ventral body muscles to power rapid mouth expansion. However, in sharks, the pectoral girdle is displaced caudally and entirely separate from the skull (as in tetrapods), raising the question of whether it is mobile during suction feeding and contributing to suction expansion...
July 26, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28716382/combined-elbow-release-and-humeral-rotational-osteotomy-in-arthrogryposis
#19
Rey N Ramirez, Christopher J Richards, Scott H Kozin, Dan A Zlotolow
PURPOSE: The purpose of this study was to determine if a simultaneous posterior elbow release and humeral osteotomy to correct both the elbow extension contracture and the humeral internal rotation contracture in children with arthrogryposis can produce similar results as a posterior elbow release alone. METHODS: This study was a retrospective chart review of consecutive patients with arthrogryposis treated surgically for elbow extension contracture between 2007 and 2014...
July 14, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28713345/experimental-study-and-ann-dual-time-scale-perturbation-model-of-electrokinetic-properties-of-microbiota
#20
Yong Liu, Cristian R Munteanu, Carlos Fernandez-Lozano, Alejandro Pazos, Tao Ran, Zhiliang Tan, Yizun Yu, Chuanshe Zhou, Shaoxun Tang, Humberto González-Díaz
The electrokinetic properties of the rumen microbiota are involved in cell surface adhesion and microbial metabolism. An in vitro study was carried out in batch culture to determine the effects of three levels of special surface area (SSA) of biomaterials and four levels of surface tension (ST) of culture medium on electrokinetic properties (Zeta potential, ξ; electrokinetic mobility, μe), fermentation parameters (volatile fatty acids, VFAs), and ST over fermentation processes (ST-a, γ). The obtained results were combined with previously published data (digestibility, D; pH; concentration of ammonia nitrogen, c(NH3-N)) to establish a predictive artificial neural network (ANN) model...
2017: Frontiers in Microbiology
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