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https://www.readbyqxmd.com/read/29454297/intracytoplasmic-sperm-injection-icsi-of-in-vitro-matured-oocytes-with-stored-epididymal-spermatozoa-in-camel-camelus-dromedarius-effect-of-exogenous-activation-on-in-vitro-embryo-development
#1
Nisar A Wani, Seungbum Hong
Experiments were conducted to investigate the development of in vitro matured camel oocytes after their intra-cytoplasmic sperm injection (ICSI) with epididymal sperm collected from slaughtered male camels. Ovaries and testes were collected from a local slaughterhouse in normal saline solution (NSS) at 37 °C and on ice (0-1 °C), respectively. Cumulus-oocyte complexes (COCs) aspirated from the follicles were randomly distributed to 4-well culture plates (20-25 COCs/well) containing 500 μL of maturation medium and cultured at 38...
February 8, 2018: Theriogenology
https://www.readbyqxmd.com/read/29454271/the-complexation-of-rhizosphere-and-nonrhizosphere-soil-organic-matter-with-chromium-using-elemental-analysis-combined-with-ftir-spectroscopy
#2
Jiajun Wen, Zhongwu Li, Bin Huang, Ninglin Luo, Mei Huang, Ren Yang, Qiu Zhang, Xiuqing Zhai, Guangming Zeng
Complexation is a main mechanism controlling the reactions between soil organic matter (SOM) and heavy metals, which still have not been fully understood up to date. The objective of this study was to compare the SOM composition of nonrhizosphere and rhizosphere in low Cr treatment with that in high Cr treatment and to find out how metal concentrations affect the complexation with SOM. The results revealed that both the hydroxyl and the carboxyl were significantly different under different Cr treatment groups...
February 14, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29454253/charge-transfer-complex-between-2-3-diaminopyridine-with-chloranilic-acid-synthesis-characterization-and-dft-td-dft-computational-studies
#3
Khairia M Al-Ahmary, Moustafa M Habeeb, Areej H Al-Obidan
New charge transfer complex (CTC) between the electron donor 2,3-diaminopyridine (DAP) with the electron acceptor chloranilic (CLA) acid has been synthesized and characterized experimentally and theoretically using a variety of physicochemical techniques. The experimental work included the use of elemental analysis, UV-vis, IR and 1 H NMR studies to characterize the complex. Electronic spectra have been carried out in different hydrogen bonded solvents, methanol (MeOH), acetonitrile (AN) and 1:1 mixture from AN-MeOH...
February 10, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29454166/a-water-based-topical-chinese-traditional-medicine-zicao-for-wound-healing-developed-using-2-hydroxypropyl-%C3%AE-cyclodextrin
#4
Ta Chen Chen, Song-Cu Yu, Chin-Mu Hsu, Fuu-Jen Tsai, Yuhsin Tsai
Zicao is a traditional Chinese herbal medicine that has been used for the topical treatment of wounds in the form of oil-based ointment for several hundred years. To overcome the disadvantages of oil-based ointment such as irritation, discomfort, and difficulty in cleaning, this study developed a water-based topical formulation of Zicao. An ethanol extract of Zicao was included in 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) to form a water-soluble Zicao-HP-β-CD complex. The formation of the Zicao-HP-β-CD complex was determined using LC-MS, 1 H NMR, ROSEY, and solubility analysis...
February 10, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29454001/brain-bioenergetics-in-rats-with-acute-hyperphenylalaninemia
#5
Nádia Weber Dimer, Bruna Klippel Ferreira, Jotele Fontana Agostini, Maria Luiza Gomes, Luiza Wilges Kist, Fernanda Malgarin, Milena Carvalho-Silva, Lara Mezari Gomes, Joyce Rebelo, Marisa Jádna Silva Frederico, Fátima Regina Mena Barreto Silva, Eduardo Pacheco Rico, Mauricio Reis Bogo, Emilio Luiz Streck, Gustavo Costa Ferreira, Patrícia Fernanda Schuck
Phenylketonuria (PKU) is a disorder of phenylalanine (Phe) metabolism caused by deficient phenylalanine hydroxylase activity. The deficiency results in increased levels of Phe and its metabolites in fluids and tissues of patients. PKU patients present neurological signals and symptoms including hypomyelination and intellectual deficit. This study assessed brain bioenergetics at 1 h after acute Phe administration to induce hyperphenylalaninemia (HPA) in rats. Wistar rats were randomized in two groups: HPA animals received a single subcutaneous administration of Phe (5...
February 14, 2018: Neurochemistry International
https://www.readbyqxmd.com/read/29453948/noncritical-signaling-role-of-a-kinase-receptor-interaction-surface-in-the-escherichia-coli-chemosensory-core-complex
#6
Germán E Piñas, Michael D DeSantis, John S Parkinson
In E. coli chemosensory arrays, transmembrane receptors, a histidine autokinase CheA, and a scaffolding protein CheW interact to form an extended hexagonal lattice of signaling complexes. One interaction, previously assigned a crucial signaling role, occurs between chemoreceptors and the CheW-binding P5 domain of CheA. Structural studies showed a receptor helix fitting into a hydrophobic cleft at the boundary between P5 subdomains. Our work aimed to elucidate the in vivo roles of the receptor-P5 interface, employing as a model the interaction between E...
February 14, 2018: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29453903/tracking-the-dynamic-folding-and-unfolding-of-rna-g-quadruplexes-in-live-cells
#7
Xiu-Cai Chen, Shuo-Bin Chen, Jing Dai, Jia-Hao Yuan, Tian-Miao Ou, Zhi-Shu Huang, Jia-Heng Tan
Due to the absence of methods for tracking RNA G-quadruplex dynamics, especially the folding and unfolding of this attractive structure in live cells, understanding of the biological roles of RNA G-quadruplexes is so far limited. Here we reported a new red-emitting fluorescent probe, QUMA-1, for a selective, continuous and real-time visualization of RNA G-quadruplexes in live cells. The applications of QUMA-1 in several previously intractable applications, including live-cell imaging of the dynamic folding, unfolding and movement of RNA G-quadruplexes and visualizing the unwinding of RNA G-quadruplexes by RNA helicase have been demonstrated...
February 17, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29453902/perioperative-outcome-and-complications-following-laparoscopic-versus-robotic-assisted-dismembered-pyeloplasty-a-systematic-review-and-meta-analysis
#8
REVIEW
Alexander Light, Sandeep Karthikeyan, Sachan Maruthan, Oussama ElHage, Hansjörg Danuser, Prokar Dasgupta
OBJECTIVE: To analyse the current difference between dismembered robotic-assisted pyeloplasty (RP) and laparoscopic pyeloplasty (LP) in the treatment of pelvi-ureteric junction obstruction (PUJO) patients as of June 26 2017, focusing on operative time, length of hospital stay, complication rate, and success rate. PATIENTS AND METHODS: We searched PubMed, Medline, and Embase databases, consulted experts, reviewed reference lists, used the related articles PubMed feature, and reviewed scientific meeting abstracts for eligible articles from 1993 to June 26 2017...
February 17, 2018: BJU International
https://www.readbyqxmd.com/read/29453808/three-dimensional-printing-in-congenital-heart-disease-a-systematic-review
#9
REVIEW
Ivan Lau, Zhonghua Sun
Three-dimensional (3D) printing has shown great promise in medicine with increasing reports in congenital heart disease (CHD). This systematic review aims to analyse the main clinical applications and accuracy of 3D printing in CHD, as well as to provide an overview of the software tools, time and costs associated with the generation of 3D printed heart models. A search of different databases was conducted to identify studies investigating the application of 3D printing in CHD. Studies based on patient's medical imaging datasets were included for analysis, while reports on in vitro phantom or review articles were excluded from the analysis...
February 17, 2018: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/29453784/electrospray-mass-spectrometry-and-molecular-modelling-study-of-formation-and-stability-of-silver-complexes-with-diazaperylene-and-bisisoquinoline
#10
Ines Starke, Andreas Koch, Stefan Kammer, Hans-Jürgen Holdt, Heiko Michael Möller
The complex formation of the following diazaperylene ligands (L) 1,12-diazaperylene 1, 1,1'-bisisoquinoline 2, 2,11-disubstituted 1,12-diazaperylenes (alkyl=methyl, ethyl, isopropyl, 3, 5, 7), 3,3'-disubstituted 1,1'-bisisoquinoline (alkyl=methyl, ethyl, isopropyl), 4, 6, 8 and with R = phenyl, 11 and with pyridine 12) and the 5,8-dimethoxy-substituted diazaperylene 9, 6,6'- dimethoxy-substituted bisisoquinoline 10 with AgBF4 was investigated. Collision-induced dissociation measurements were used to evaluate the relative stabilities of the ligands themselves and for the [1:1] + complexes as well as for the homoleptic and heteroleptic silver [1:2] + complexes in the gas phase...
February 16, 2018: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/29453713/-1-h-13-c-and-15-n-resonance-assignments-of-cw-domain-of-the-n-methyltransferase-ashh2-free-and-bound-to-the-mono-di-and-tri-methylated-histone-h3-tail-peptides
#11
Olena Dobrovolska, Maxim Bril'kov, Øyvind Ødegård-Fougner, Rein Aasland, Øyvind Halskau
The ASHH2 CW domain is responsible for recognizing the methylation state at lysine 4 of histone 3 N-terminal tails and implicated in the recruitment of the ASHH2 methyltransferase enzyme correctly to the histones. The ASHH2 CW domain binds H3 lysine motifs that can be either mono-, di-, or tri-methylated [ARTK(meX)QTAR, where X denotes the number of methylations], but binds strongest to monomethylated instances (K d values reported in the range of 1 µm to 500 nM). Hoppmann et al. published the uncomplexed NMR structure of an ASHH2 CW domain in 2011...
February 16, 2018: Biomolecular NMR Assignments
https://www.readbyqxmd.com/read/29453638/effects-of-cpap-therapy-on-cognitive-and-psychomotor-performances-in-patients-with-severe-obstructive-sleep-apnea-a-prospective-1-year-study
#12
Renata Pecotic, Ivana Pavlinac Dodig, Maja Valic, Tea Galic, Linda Lusic Kalcina, Natalija Ivkovic, Zoran Dogas
STUDY OBJECTIVES: We prospectively investigated the effects of continuous positive airway pressure (CPAP) on long-term cognitive and psychomotor performances, and excessive daytime sleepiness in severe obstructive sleep apnea (OSA) patients. METHODS: A total of 40 patients were recruited and 23 patients with severe OSA fully completed the study protocol to investigate the effects of CPAP therapy on psychomotor performance at 1, 3, and 6 months and 1 year following initiation of the therapy...
February 16, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29453575/regulation-of-blood-testis-barrier-btb-dynamics-role-of-actin-and-microtubule-based-cytoskeletons
#13
Qing Wen, Elizabeth I Tang, Nan Li, Dolores D Mruk, Will M Lee, Bruno Silvestrini, C Yan Cheng
The blood-testis barrier (BTB) is an important ultrastructure in the testis that supports meiosis and postmeiotic spermatid development since a delay in the establishment of a functional Sertoli cell barrier during postnatal development in rats or mice by 17-20 day postpartum (dpp) would lead to a delay of the first wave of meiosis. Furthermore, irreversible disruption of the BTB by toxicants also induces infertility in rodents. Herein, we summarize recent findings that BTB dynamics (i.e., disassembly, reassembly, and stabilization) are supported by the concerted efforts of the actin- and microtubule (MT)-based cytoskeletons...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29453515/micro-fragmented-adipose-tissue-injection-for-the-treatment-of-complex-anal-fistula-a-pilot-study-accessing-safety-and-feasibility
#14
G Naldini, A Sturiale, B Fabiani, I Giani, C Menconi
BACKGROUND: The aim of the present study was to evaluate the safety and efficacy of autologous, micro-fragmented and minimally manipulated adipose tissue injection associated closure of the internal opening in promoting healing of complex anal fistula. METHODS: A pilot study was conducted on patients referred to our center with anal fistula, from April 2015-December 2016. Inclusion criteria were age over 16 years old and a diagnosis of complex anal fistula according to the American Gastroenterological Association classification The patients were divided into 2 groups; the "first time group" (Group I) in which micro-fragmented adipose tissue injection with closure of the internal opening was the first sphincter-saving procedure, and the "recurrent group" (Group II) consisting of patients who had failed prior sphincter-saving procedures...
February 16, 2018: Techniques in Coloproctology
https://www.readbyqxmd.com/read/29453458/il-2-inducible-kinase-itk-is-critical-for-hiv-1-infection-of-jurkat-t-cells
#15
Anika Hain, Melanie Krämer, René M Linka, Saeideh Nakhaei-Rad, Mohammad Reza Ahmadian, Dieter Häussinger, Arndt Borkhardt, Carsten Münk
Successful replication of Human immunodeficiency virus (HIV)-1 depends on the expression of various cellular host factors, such as the interleukin-2 inducible T-cell kinase (ITK), a member of the protein family of TEC-tyrosine kinases. ITK is selectively expressed in T-cells and coordinates signaling pathways downstream of the T-cell receptor and chemokine receptors, including PLC-1 activation, Ca 2+ -release, transcription factor mobilization, and actin rearrangements. The exact role of ITK during HIV-1 infection is still unknown...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453405/widespread-use-of-incorrect-pcr-ramp-rate-negatively-impacts-multidrug-resistant-tuberculosis-diagnosis-mtbdrplus
#16
B Derendinger, M de Vos, R R Nathavitharana, T Dolby, J A Simpson, P D van Helden, R M Warren, G Theron
The scale-up of rapid drug resistance testing for TB is a global priority. MTBDRplus is a WHO-endorsed multidrug-resistant (MDR)-TB PCR assay with suboptimal sensitivities and high indeterminate rates on smear-negative specimens. We hypothesised that widespread use of incorrect thermocycler ramp rate (speed of temperature change between cycles) impacts performance. A global sample of 72 laboratories was surveyed. We tested 107 sputa from Xpert MTB/RIF-positive patients and, separately, dilution series of bacilli, both at the manufacturer-recommended ramp rate (2...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453317/histone-h3-3k27m-mobilizes-multiple-cancer-testis-ct-antigens-in-pediatric-glioma
#17
Houliang Deng, Jianming Zeng, Ting Zhang, Longcai Gong, Hongjie Zhang, Edwin Cheung, Chris Jones, Gang Li
Lysine to Methionine mutations at position 27 (K27M) in the histone H3 (H3.3 and H3.1) are highly prevalent in pediatric high-grade gliomas (HGG) that arise in the midline of the central nervous system. H3K27M perturbs the activity of polycomb repressor complex 2 (PRC2) and correlates with DNA hypomethylation; however, the pathways whereby H3K27M drive the development of pediatric HGG remain poorly understood. To understand the mechanism of pediatric HGG development driven by H3.3K27M and discover potential therapeutic targets or biomarkers, we established pediatric glioma cell model systems harboring H3...
February 16, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29453316/brd1-mediated-acetylation-promotes-integrin-%C3%AE-v-gene-expression-via-interaction-with-sulfatide
#18
Qian Qian Cai, Yi Wei Dong, Bing Qi, Xiao-Ting Shao, Rong Wang, Zhong Yi Chen, Bao Mei He, Xing Zhong Wu
Integrin αV (ITGAV) gene expression is often dysregulated in cancers especially in hepatocellular carcinoma (HCC); however, the mechanism of regulation is poorly understood. Here, it is demonstrated that sulfatide activated integrin αV gene transcription, through histone H3K9/14 acetylation at the promoter, and high integrin αV expression are closely associated with poor prognosis. To elucidate the mechanism of regulation of acetylation, sulfatide-bound proteins were screened by mass spectrometry (MS), and BRD1 (bromodomain containing protein 1) was identified as an interacting protein that also co-localized with sulfatide in HCC cells...
February 16, 2018: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29453297/what-factors-mediate-the-inter-relationship-between-frailty-and-pain-in-cognitively-and-functionally-sound-older-adults-a-prospective-longitudinal-ageing-cohort-study-in-taiwan
#19
Jing-Hui Chiou, Li-Kuo Liu, Wei-Ju Lee, Li-Ning Peng, Liang-Kung Chen
OBJECTIVES: The main aim was to investigate the complex inter-relationship between frailty and pain, and the mediating roles of cognitive function, morbidity and mood in this nexus. DESIGN: A cross-sectional analysis. SETTING: A prospective community-dwelling population-based cohort. PARTICIPANTS: 1682 adults age ≥50 years without evident cognitive or functional impairment, or history of cancer. PRIMARY AND SECONDARY OUTCOME MEASURES: The mediating effect of depression, cognitive function and comorbidity on the nexus between pain and frailty among older and middle-aged adults...
February 16, 2018: BMJ Open
https://www.readbyqxmd.com/read/29453283/chemical-stresses-fail-to-mimic-the-unfolded-protein-response-resulting-from-luminal-load-with-unfolded-polypeptides
#20
Timothy J Bergmann, Ilaria Fregno, Fiorenza Fumagalli, Andrea Rinaldi, Francesco Bertoni, Paul J Boersema, Paola Picotti, Maurizio Molinari
The stress sensors ATF6, IRE1 and PERK monitor deviations from homeostatic conditions in the endoplasmic reticulum (ER), a protein biogenesis compartment of eukaryotic cells. Their activation elicits unfolded protein responses (UPR) to re-establish proteostasis. UPR have been extensively investigated in cells exposed to chemicals that activate ER stress sensors by perturbing calcium, N-glycans or redox homeostasis. Cell responses to variations in luminal load with unfolded proteins are, in contrast, poorly characterized...
February 16, 2018: Journal of Biological Chemistry
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