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https://www.readbyqxmd.com/read/28806727/formation-of-friable-embryogenic-callus-in-cassava-is-enhanced-under-conditions-of-reduced-nitrate-potassium-and-phosphate
#1
Yoshinori Utsumi, Chikako Utsumi, Maho Tanaka, Vu The Ha, Akihiro Matsui, Satoshi Takahashi, Motoaki Seki
Agrobacterium-mediated transformation is an important research tool for the genetic improvement of cassava. The induction of friable embryogenic callus (FEC) is considered as a key step in cassava transformation. In the present study, the media composition was optimized for enhancing the FEC induction, and the effect of the optimized medium on gene expression was evaluated. In relative comparison to MS medium, results demonstrated that using a medium with reducing nutrition (a 10-fold less concentration of nitrogen, potassium, and phosphate), the increased amount of vitamin B1 (10 mg/L) and the use of picrolam led to reprogram non-FEC to FEC...
2017: PloS One
https://www.readbyqxmd.com/read/28806700/a-large-raman-scattering-cross-section-molecular-embedded-sers-aptasensor-for-ultrasensitive-aflatoxin-b1-detection-using-cs-fe3o4-for-signal-enrichment
#2
Quansheng Chen, Mingxiu Yang, Xiaojing Yang, Huanhuan Li, Zhiming Guo, M H Rahma
With growing concern on oil safety problems, developing a simple and sensitive method to detect Aflatoxin B1 (AFB1), a common mycotoxin in peanut oil, is very necessary. In this study, Surface-enhanced Raman Scattering (SERS) aptasensor was developed for ultrasensitive AFB1 detection using the amino-terminal AFB1 aptamer (NH2-DNA1); and thiol-terminal AFB1 complementary aptamer (SH-DNA2) conjugated magnetic-beads (CS-Fe3O4) as enrichment nanoprobe and AuNR@DNTB@Ag nanorods (ADANRs) as reporter nanoprobe respectively...
August 10, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28806113/-hungarian-diet-and-nutritional-status-survey-the-otap2014-study-v-vitamin-intake-of-the-hungarian-population
#3
Erzsébet Schreiberné Molnár, Zsuzsanna Nagy-Lőrincz, Barbara Nagy, Márta Bakacs, Orsolya Kis, Eszter Sarkadi Nagy, Éva Martos
INTRODUCTION AND AIM: The Hungarian Diet and Nutritional Status Survey was implemented on a sub-sample of the European Health Interview Survey. In this paper, the authors present the data on the vitamin intake of the Hungarian population. METHOD: The survey represents the vitamin intake of the Hungarian non-institutionalised adult population of 18 years and older. There are significant differences between men's and women's vitamin intake. RESULTS: The intake of all water-soluble vitamins except for vitamin C is higher in men than in women, and the difference between the genders regarding the intake of vitamin E and D is significant...
August 2017: Orvosi Hetilap
https://www.readbyqxmd.com/read/28805696/licochalcone-a-inhibits-the-proliferation-of-human-lung-cancer-cell-lines-a549-and-h460-by-inducing-g2-m-cell-cycle-arrest-and-er-stress
#4
Chenyu Qiu, Tingting Zhang, Wenxin Zhang, Lina Zhou, Bin Yu, Wei Wang, Zhihong Yang, Zhiguo Liu, Peng Zou, Guang Liang
Licochalcone A (LicA), a flavonoid isolated from the famous Chinese medicinal herb Glycyrrhiza uralensis Fisch, has wide spectrum of pharmacological activities. In this study, the anti-cancer effects and potential mechanisms of LicA in non-small cell lung cancer (NSCLC) cells were studied. LicA decreased cell viability and induced apoptosis in a dose-dependent manner in NSCLC cells. LicA inhibited lung cancer cells growth by blocking cell cycle progression at the G2/M transition and inducing apoptosis. LicA treatment decreased the expression of MDM2, Cyclin B1, Cdc2 and Cdc25C in H460 and A549 cancer cell lines...
August 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28804952/evaluation-of-cytotoxicity-of-propofol-and-its-related-mechanism-in-glioblastoma-cells-and-astrocytes
#5
Shu-Shong Hsu, Chung-Ren Jan, Wei-Zhe Liang
Propofol (2,6-diisopropylphenol), one of the extensively and commonly used anesthetic agents, has been shown to affect the biological behavior of various models. Previous researches have shown that propofol-induced cytotoxicity might cause anticancer effect in different cells. However, the mechanisms underlying the effect of propofol on cytotoxicity is still elusive in human glioblastoma cells. The aims of this study were to evaluate effects of propofol on cytotoxicity, cell cycle distribution and ROS production, and establish the relationship between oxidative stress and cytotoxicity in GBM 8401 human glioblastoma cells and DI TNC1 rat astrocytes...
August 14, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28803790/utility-of-the-cytochrome-c-oxidase-subunit-i-gene-for-the-diagnosis-of-toxoplasmosis-using-pcr
#6
Xue Feng, Kazumi Norose, Kexin Li, Kenji Hikosaka
Toxoplasmosis is caused by the protozoan parasite Toxoplasma gondii, which belongs to the phylum Apicomplexa. Since this parasite causes severe clinical symptoms in immunocompromised patients, early diagnosis of toxoplasmosis is essential. PCR is currently used for early diagnosis, but there is no consensus regarding the most effective method for amplifying Toxoplasma DNA. In this study, we considered the utility of the cytochrome c subunit I (cox1) gene, which is encoded in the mitochondrial DNA of this parasite, as a novel target of PCR for the diagnosis of toxoplasmosis...
August 10, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28801314/macrophage-migration-inhibitory-factor-limits-renal-inflammation-and-fibrosis-by-counteracting-tubular-cell-cycle-arrest
#7
Sonja Djudjaj, Ina V Martin, Eva M Buhl, Nina J Nothofer, Lin Leng, Marta Piecychna, Jürgen Floege, Jürgen Bernhagen, Richard Bucala, Peter Boor
Renal fibrosis is a common underlying process of progressive kidney diseases. We investigated the role of macrophage migration inhibitory factor (MIF), a pleiotropic proinflammatory cytokine, in this process. In mice subjected to unilateral ureteral obstruction, genetic deletion or pharmacologic inhibition of MIF aggravated fibrosis and inflammation, whereas treatment with recombinant MIF was beneficial, even in established fibrosis. In two other models of progressive kidney disease, global Mif deletion or MIF inhibition also worsened fibrosis and inflammation and associated with worse kidney function...
August 11, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28799782/effects-of-nutrient-and-bioactive-food-components-on-alzheimer-s-disease-and-epigenetic
#8
Elİf Celİk, Nevİn Sanlİer
Alzheimer's disease (AD) is the most common form of dementia in the elderly and is a chronic neurodegenerative disease that is becoming widespread. For this reason, in recent years factors affecting the development, progression and cognitive function of the AD have been emphasized. Nutrients and other bioactive nutrients are among the factors that are effective in AD. In particular, vitamins A, C and E, vitamins B1, B6 and B12, folate, magnesium, choline, inositol, anthocyanins, isoflavones etc. nutrients and bioactive nutrients are known to be effective in the development of AD...
August 11, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28799210/whole-brain-arteriography-and-venography-using-improved-velocity-selective-saturation-pulse-trains
#9
Wenbo Li, Feng Xu, Michael Schär, Jing Liu, Taehoon Shin, Yansong Zhao, Peter C M van Zijl, Bruce A Wasserman, Ye Qiao, Qin Qin
PURPOSE: To develop velocity-selective (VS) MR angiography (MRA) protocols for arteriography and venography with whole-brain coverage. METHODS: Tissue suppression using velocity-selective saturation (VSS) pulse trains is sensitive to radiofrequency field (B1 +) inhomogeneity. To reduce its sensitivity, we replaced the low-flip-angle hard pulses in the VSS pulse train with optimal composite (OCP) pulses. Additionally, new pulse sequences for arteriography and venography were developed by placing spatially selective inversion pulses with a delay to null signals from either venous or arterial blood...
August 10, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28799135/appendiceal-duplication-a-comprehensive-review-of-published-cases-and-clinical-recommendations
#10
H Nageswaran, U Khan, F Hill, A Maw
BACKGROUND: Duplex appendix is very rare (incidence 0.004%) but has clinical relevance given the frequency of appendicectomies performed. Failure to recognise duplication can result in failure of treatment and medico-legal consequences. A review of published cases was undertaken to identify factors that may help in managing this rare condition. METHODS: All English and non-English publications were identified in PubMed, Embase and Cochrane databases. Patient demographics, intraoperative findings, anatomical details and histopathology were analysed...
August 10, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28796544/journal-club-doubling-time-of-thymic-epithelial-tumors-correlates-with-world-health-organization-histopathologic-classification
#11
Dong Young Jeong, Kyung Soo Lee, Myung Jin Chung, Jae Ill Zo, Young Mog Shim, Jung Won Moon
OBJECTIVE: Awareness of volume doubling times (VDTs) of different thymic epithelial tumors (TETs), including low- and high-grade thymomas and thymic carcinomas, is important for their management. The purpose of this study was to evaluate the VDTs of incidentally found TETs using 3D volumetry (3D-VDT) and longest diameter (LD-VDT). MATERIALS AND METHODS: This retrospective study included 50 patients (30 men, 20 women) who had histologically proven TETs and who underwent at least two serial CT studies at greater than 2-month intervals...
August 10, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28796308/technical-note-the-effect-of-2d-excitation-profile-on-t1-measurement-accuracy-using-the-variable-flip-angle-method-with-an-average-flip-angle-assumption
#12
Bryant T Svedin, Dennis L Parker
PURPOSE: To study the accuracy and precision of T1 estimates using the Variable Flip Angle (VFA) method in 2D and 3D acquisitions. METHODS: Excitation profiles were simulated using numerical implementation of the Bloch equations for Hamming-windowed sinc excitation pulses with different time-bandwidth products (TBP) of 2, 6, and 10 and for T1 values of 295 ms and 1045 ms. Experimental data was collected in 5° increments from 5° to 90° for the same T1 and TBP values...
August 10, 2017: Medical Physics
https://www.readbyqxmd.com/read/28796259/muc1-induces-acquired-chemoresistance-by-upregulating-abcb1-in-egfr-dependent-manner
#13
Wei Jin, Xiaodong Liao, Yaping Lv, Zhi Pang, Yuming Wang, Quanfu Li, Yahui Liao, Qing Ye, Guoqiang Chen, Kewen Zhao, Lei Huang
Chemoresistance contributes to cancer relapse and increased mortality in a variety of cancer types, raising a pressing need to better understand the underlying mechanism. MUC1 is abnormally overexpressed in numerous carcinomas and associated with poor prognosis. However, the functional significance of MUC1 in chemoresistance has not been fully elucidated. Here, we showed that MUC1 expression was considerably induced in cells that had acquired chemoresistance at both transcriptional and post-translational levels...
August 10, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28795717/immunoglobulin-binding-b1-domain-mediated-antibody-conjugation-to-quantum-dots-for-in-vitro-and-in-vivo-molecular-imaging
#14
Setsuko Tsuboi, Akira Sasaki, Takao Sakata, Hidehiro Yasuda, Takashi Jin
A facile method for the preparation of antibody-quantum dot (QD) conjugates using the immunoglobulin binding (B1) domain of protein G is presented. The utility of antibody-QD conjugates using the B1 domain is demonstrated for fluorescence imaging of breast tumor cells in vitro and in vivo.
August 10, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28795444/prediction-of-shorter-oligonucleotide-sequences-recognizing-aflatoxin-m1
#15
Amit Kumar Pandey, Yudhishthir Singh Rajput, Dheer Singh, Rajan Sharma
Aflatoxin M1 is present in milk of lactating animals fed on aflatoxin B1 contaminated feeds. Aptamers are new emerging ligand molecules and can be employed in assay protocols. Shorter aptamers have several advantages. Untruncated (72 nt long) and truncated (18 to 42 nts long) aptamers were evaluated for aflatoxin M1 recognition which was detected by colour-change in aptamer-conjugated-gold nanoparticles in presence of aflatoxin M1. Truncation of 10 aptamers was designed to retain motifs. Untruncated and truncated aptamers recognised aflatoxin M1...
August 10, 2017: Biotechnology and Applied Biochemistry
https://www.readbyqxmd.com/read/28790182/protein-kinase-c-delta-phosphorylates-ecdysone-receptor-b1-to-promote-gene-expression-and-apoptosis-under-20-hydroxyecdysone-regulation
#16
Cai-Hua Chen, Jing Pan, Yu-Qin Di, Wen Liu, Li Hou, Jin-Xing Wang, Xiao-Fan Zhao
The nuclear receptor EcRB1, which is activated by the insect steroid hormone 20-hydroxyecdysone (20E), is reportedly phosphorylated by a protein kinase after 20E induction. However, the protein kinase has not been identified, and the significance of EcRB1 phosphorylation is unclear. In this study, we identified a protein kinase C δ (PKCδ) isoform (the E isoform) that phosphorylates EcRB1 in the lepidopteran Helicoverpa armigera, a serious agricultural pest worldwide, to promote apoptotic gene expression and apoptosis during metamorphosis...
August 8, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28789997/environmentally-relevant-level-of-aflatoxin-b1-elicits-toxic-pro-inflammatory-response-in-murine-cns-derived-cells
#17
Jalil Mehrzad, Amir Mohammad Malvandi, Mohsen Alipour, Saman Hosseinkhani
Aflatoxin B1 (AFB1) is a well-known member of aflatoxins (AFs) that is considered among highly stable toxic contaminants of food, worldwide. The impact of AFB1 on neural cells and systems has poorly been understood. To assess the cellular effects of AFB1 on brain, we used murine pure primary astrocytes, sub ventricular zone-derived neural precursor cells (NPCs) and microglia cell line (BV2). Cells were exposed separately to environmentally relevant level (20ng/ml) of AFB1 for 1, 2, 3, 6, 12, 24 and 48h in culture...
August 5, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28783171/the-pdgfr%C3%AE-laminin-b1-keratin-19-cascade-drives-tumor-progression-at-the-invasive-front-of-human-hepatocellular-carcinoma
#18
O Govaere, M Petz, J Wouters, Y-P Vandewynckel, E J Scott, B Topal, F Nevens, C Verslype, Q M Anstee, H Van Vlierberghe, W Mikulits, T Roskams
Human hepatocellular carcinomas (HCCs) expressing the biliary/hepatic progenitor cell marker keratin 19 (K19) have been linked with a poor prognosis and exhibit an increase in platelet-derived growth factor receptor α (PDGFRα) and laminin beta 1 (LAMB1) expression. PDGFRα has been reported to induce de novo synthesis of LAMB1 protein in a Sjogren syndrome antigen B (La/SSB)-dependent manner in a murine metastasis model. However, the role of this cascade in human HCC remains unclear. This study focused on the functional role of the PDGFRα-La/SSB-LAMB1 pathway and its molecular link to K19 expression in human HCC...
August 7, 2017: Oncogene
https://www.readbyqxmd.com/read/28783032/seroprevalence-of-toxoplasma-gondii-infection-in-goats-from-the-south-west-region-of-poland-and-the-detection-of-t-gondii-dna-in-goat-milk
#19
Jacek Sroka, Pawel Kusyk, Ewa Bilska-Zajac, Jacek Karamon, Jacek Dutkiewicz, Angelina Wojcik-Fatla, Violetta Zajac, Krzysztof Stojecki, Miroslaw Rozycki, Tomasz Cencek
Toxoplasma gondii (Nicolle et Manceaux, 1908) is an obligatory intracellular protozoan parasite prevalent in animals and humans worldwide having medical and veterinary importance on account of causing abortion or congenital disease in intermediate hosts, including man. Since T. gondii has already been identified in the milk of goats, Capra aegagrus hircus (Linnaeus), the possibility of acquiring infection by ingesting unpasteurised goat milk should be taken into consideration. Thus, the aim of the present study was to determine the presence of T...
July 11, 2017: Folia Parasitologica
https://www.readbyqxmd.com/read/28783000/multiclass-mycotoxin-analysis-in-edible-oils-using-a-simple-solvent-extraction-method-and-liquid-chromatography-with-tandem-mass-spectrometry
#20
Taeyong Eom, Hyun-Deok Cho, Junghyun Kim, Mihee Park, Jinyoung An, Moosung Kim, Sheen-Hee Kim, Sang Beom Han
A simple and rapid method for the simultaneous determination of eleven mycotoxins-aflatoxins B1, B2, G1, and G2; fumonisins B1, B2, and B3; ochratoxin A; zearalenone; deoxynivalenol; and T-2 toxin-in edible oils was established using liquid chromatography tandem mass spectrometry (LC-MS/MS). In this study, QuEChERS, QuEChERS with dispersive liquid-liquid microextraction, and solvent extraction were examined for sample preparation. Among these methods, solvent extraction with a mixture of formic acid/acetonitrile (5/95, v/v) successfully extracted all target mycotoxins...
August 7, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
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