keyword
MENU ▼
Read by QxMD icon Read
search

Molecular testing

keyword
https://www.readbyqxmd.com/read/27923110/impact-of-oligonucleotide-structure-chemistry-and-delivery-method-on-in-vitro-cytotoxicity
#1
Maja M Janas, Yongfeng Jiang, Mark K Schlegel, Scott Waldron, Satya Kuchimanchi, Scott A Barros
Single-stranded (ss) 2'-fluoro (2'-F)-modified oligonucleotides (ONs) with a full phosphorothioate (PS) backbone have been reported to be cytotoxic and cause DNA double-strand breaks (DSBs) when transfected into HeLa cells. However, the molecular determinants of these effects have not been fully explored. In this study, we investigated the impact of ON structure, chemistry, delivery method, and cell type on in vitro cytotoxicity and DSBs. We found that ss PS-ONs were more cytotoxic than double-stranded (ds) PS-ONs, irrespective of the 2'-ribose chemistry, inclusive of the 2'-F modification...
December 6, 2016: Nucleic Acid Therapeutics
https://www.readbyqxmd.com/read/27923017/expression-of-microrna-328-functions-as-a-biomarker-for-recurrence-of-early-gastric-cancer-egc-after-endoscopic-submucosal-dissection-esd-by-modulating-cd44
#2
Hui-Guang Xue, Ai-Hua Yang, Xue-Guo Sun, Yan-Yan Lu, Zi-Bin Tian
BACKGROUND This study investigated the molecular mechanism of the effect of CD44 on the recurrence of EGC after ESD, including the potential regulator and signaling pathways of CD44. MATERIAL AND METHODS We searched the miRNA online database (www.mirdb.org) with the "seed sequence" located within the 3'-UTR of the target gene, and performed luciferase assay to test the miRNA/mRNA relationship. We also determined the expression of CD44 in the EGC and control samples. In addition, statistical analysis was used to explore the role of miR-328 as a biomarker to predict the recurrence after ECD...
December 6, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27922643/a-kanamycin-sensor-based-on-an-electrosynthesized-molecularly-imprinted-poly-o-phenylenediamine-film-on-a-single-walled-carbon-nanohorn-modified-glassy-carbon-electrode
#3
Shuang Han, Bingqian Li, Ze Song, Sihao Pan, Zhichao Zhang, Hui Yao, Shuyun Zhu, Guobao Xu
A single-walled carbon nanohorn (SWCNH) has been used to construct a molecularly imprinted electrochemical sensor for the first time. Kanamycin, a widely used aminoglycoside antibiotic, is used as a representative analyte to test the detection strategy. The kanamycin sensor was constructed by the electropolymerization of a molecularly imprinted poly-o-phenylenediamine film on a SWCNH modified glassy carbon electrode. The sensor was investigated in the presence or absence of kanamycin by cyclic voltammetry to verify the changes in the redox peak currents of K3Fe(CN)6...
December 6, 2016: Analyst
https://www.readbyqxmd.com/read/27922623/molecular-mechanisms-underlying-the-positive-role-of-treadmill-training-in-locomotor-recovery-after-spinal-cord-injury
#4
Q Liu, B Zhang, C Liu, D Zhao
OBJECTIVES: This study aimed to investigate the molecular mechanisms underlying the positive role of treadmill training (TMT) in locomotor recovery. METHODS: GSE52763 microarray data were downloaded from GEO database, which was collected from the lumbar spinal cord samples of three groups of mice: mice subjected to contusive injury and killed 1 week after injury (I1), mice subjected to injury and killed 3 weeks after injury (I3), and mice subjected to injury and TMT beginning at week 1 and lasting until week 3 (T3)...
December 6, 2016: Spinal Cord
https://www.readbyqxmd.com/read/27922594/cacna1c-in-the-prefrontal-cortex-regulates-depression-related-behaviors-via-redd1
#5
Zeeba D Kabir, Anni S Lee, Caitlin E Burgdorf, Delaney Fischer, Aditi M Rajadhyaksha, Ethan Mok, Bryant Rizzo, Richard C Rice, Kamalpreet Singh, Kristie T Ota, Danielle M Gerhard, Kathryn C Schierberl, Michael Glass, Ronald S Duman, Anjali M Rajadhyaksha
The CACNA1C gene that encodes the L-type Ca(2+) channel (LTCC) Cav1.2 subunit has emerged as a candidate risk gene for multiple neuropsychiatric disorders including bipolar disorder, major depressive disorder and schizophrenia, all marked with depression-related symptoms. Although cacna1c heterozygous (HET) mice have been previously reported to exhibit an antidepressant-like phenotype, the molecular and circuit-level dysfunction remains unknown. Here we report that viral vector-mediated deletion of cacna1c in the adult prefrontal cortex (PFC) of mice recapitulates the antidepressant-like effect observed in cacna1c HET mice using the sucrose preference test (SPT), the forced swim test (FST), and the tail suspension test (TST)...
December 6, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27922482/evolution-of-quality-assurance-for-clinical-immunohistochemistry-in-the-era-of-precision-medicine-part-1-fit-for-purpose-approach-to-classification-of-clinical-immunohistochemistry-biomarkers
#6
Carol C Cheung, Corrado D'Arrigo, Manfred Dietel, Glenn D Francis, C Blake Gilks, Jacqueline A Hall, Jason L Hornick, Merdol Ibrahim, Antonio Marchetti, Keith Miller, J Han van Krieken, Soren Nielsen, Paul E Swanson, Clive R Taylor, Mogens Vyberg, Xiaoge Zhou, Emina E Torlakovic
Technical progress in immunohistochemistry (IHC) as well as the increased utility of IHC for biomarker testing in precision medicine avails us of the opportunity to reassess clinical IHC as a laboratory test and its proper characterization as a special type of immunoassay. IHC, as used in current clinical applications, is a descriptive, qualitative, cell-based, usually nonlinear, in situ protein immunoassay, for which the readout of the results is principally performed by pathologists rather than by the instruments on which the immunoassay is performed...
January 2017: Applied Immunohistochemistry & Molecular Morphology: AIMM
https://www.readbyqxmd.com/read/27921038/the-clinical-manifestation-and-management-of-autosomal-dominant-polycystic-kidney-disease-in-china
#7
REVIEW
Cheng Xue, Chen-Chen Zhou, Ming Wu, Chang-Lin Mei
BACKGROUND: Autosomal dominant polycystic kidney disease (ADPKD) is the most common monogenic hereditary kidney disease characterized by progressive enlargement of renal cysts. The incidence is 1-2‰ worldwide. Mutations in two genes (PKD1 and PKD2) cause ADPKD. Currently, there is no pharmaceutical treatment available for ADPKD patients in China. Summary: This review focused on advances in clinical manifestation, gene diagnosis, risk factors, and management of ADPKD in China. There is an age-dependent increase in total kidney volume (TKV) and decrease in renal function in Chinese ADPKD patients...
October 2016: Kidney Diseases
https://www.readbyqxmd.com/read/27920998/short-term-organ-culture-of-mouse-ovary-in-the-medium-supplemented-with-bone-morphogenetic-protein-15-and-follicle-stimulating-hormone-a-morphological-hormonal-and-molecular-study
#8
Mojdeh Salehnia, Mojdeh Pajokh, Nassim Ghorbanmehr
BACKGROUND: Bone morphogenetic protein 15 (BMP15) is a growth factor derived from oocyte and is essential for in vivo ovarian follicular growth and in this study, its effects on the improvement of growth and development of follicles during in vitro culture of neonatal mouse ovaries was investigated. METHODS: Two week old mice were cultured for 7 days in the basic culture media with or without follicle stimulating hormone (FSH) and BMP15 as four experimental groups; FSH(-)/BMP15(-), FSH(+)/BMP15(-), FSH(-)/BMP15(+) and FSH(+)/BMP15(+)...
October 2016: Journal of Reproduction & Infertility
https://www.readbyqxmd.com/read/27920890/mesoporous-silica-nanoparticles-equipped-with-surface-nanovalves-for-ph-controlled-liberation-of-doxorubicin
#9
N V Roik, L A Belyakova
Silica carriers equipped with molecular and supramolecular pH-sensitive nanovalves were designed by combination of sol-gel synthesis and selective postsynthetic modification. Mesoporous structure of synthesized materials was characterized by low-temperature nitrogen adsorption-desorption, small-angle X-ray diffraction and transmission electron microscopy. Chemical immobilization of N-[N'-(N'-phenyl)-2-aminophenyl]aminoalkyl groups was confirmed by IR spectral and chemical analyses of surface layer. Loading and release behaviour of synthesized drug carriers was studied in phosphate buffer solutions with pH 5...
December 6, 2016: Interface Focus
https://www.readbyqxmd.com/read/27920707/a-case-report-demonstrating-the-potential-clinical-relevance-of-liquid-tumor-biopsies-in-lung-cancer
#10
Revathi Suppiah, Bruce Gershenhorn, Maurie Markman
A 50-year-old male with advanced non-small-cell lung cancer was unable to have standard-of-care molecular testing performed at diagnosis as a result of inadequacy of the available tissue. A subsequently performed commercial liquid tumor biopsy (Foundation ACT(®)) revealed an epidermal growth factor receptor exon 19 deletion, but due to the progression of the tumor and rapid deterioration in the patient's performance status, a meaningful attempt at therapy directed to this recognized therapeutic target was not possible...
September 2016: Case Reports in Oncology
https://www.readbyqxmd.com/read/27920536/evaluation-of-potential-novel-variations-and-their-interactions-related-to-bipolar-disorders-analysis-of-genome-wide-association-study-data
#11
Cengizhan Acikel, Yesim Aydin Son, Cemil Celik, Husamettin Gul
BACKGROUND: Multifactor dimensionality reduction (MDR) is a nonparametric approach that can be used to detect relevant interactions between single-nucleotide polymorphisms (SNPs). The aim of this study was to build the best genomic model based on SNP associations and to identify candidate polymorphisms that are the underlying molecular basis of the bipolar disorders. METHODS: This study was performed on Whole-Genome Association Study of Bipolar Disorder (dbGaP [database of Genotypes and Phenotypes] study accession number: phs000017...
2016: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/27920500/design-synthesis-and-evaluation-of-vegf-sirna-crs-as-a-novel-vector-for-gene-delivery
#12
Wen Zhao, Yifan Zhang, Xueyun Jiang, Chunying Cui
Small interfering RNA (siRNA) delivery is a prospective method in gene therapy, but it has application limitations such as negative charge, water solubility and high molecular weight. In this study, a safe and efficient nano-vector, CRS, was designed and synthesized to facilitate siRNA delivery. Physical and chemical properties of VEGF-siRNA/CRS were characterized by methods including scanning electron microscopy (SEM), transmission electron microscopy, zeta potential (ζ) measurement, drug-releasing rate measurement, gel electrophoresis and confocal microscopy...
2016: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/27920176/laboratory-diagnosis-of-chikungunya-virus-infections-and-commercial-sources-for-diagnostic-assays
#13
Barbara W Johnson, Brandy J Russell, Christin H Goodman
Detection of chikungunya virus (CHIKV) or viral RNA is the primary laboratory test used to diagnose infection in serum collected <6 days after onset of illness. Two real-time reverse transcription-polymerase chain reaction (RT-PCR) kits are available commercially, but validity data are limited. There are 2 commercial sources of inactivated positive-control CHIKV RNA to be used with purchased primers. The Centers for Disease Control and Prevention provides viral RNA-positive controls and primer and probe nucleotide sequences for real-time RT-PCR testing...
December 15, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27920020/repeated-failed-non-invasive-prenatal-testing-in-a-woman-with-immune-thrombocytopenia-and-antiphospholipid-syndrome-lessons-learnt
#14
C Y Y Hui, W C Tan, E L Tan, L K Tan
We present a case of a 37-year-old Chinese woman (gravida 4 para 0) with a history of immune thrombocytopenia and type IIb antiphospholipid syndrome. She was started on 100 mg of aspirin, 20 mg of prednisolone and 20 mg of subcutaneous low-molecular-weight heparin daily for her fourth pregnancy. She opted for non-invasive prenatal testing for aneuploidy screening but had failed results three times consecutively from insufficient fetal cfDNA initially or high variance in cfDNA counts on redraws. She declined invasive karyotyping...
December 5, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27919952/molecular-factors-associated-with-pemetrexed-sensitivity-according-to-histological-type-in-non-small-cell-lung-cancer
#15
Tsukihisa Yoshida, Tatsuro Okamoto, Tokujiro Yano, Kazuki Takada, Mikihiro Kohno, Kenichi Suda, Mitsuhiro Takenoyama, Yoshinao Oda, Yoshihiko Maehara
BACKGROUND: This study was designed to investigate potential molecules that predict chemosensitivity to pemetrexed (Alimta®) in surgically resected non-small cell lung cancer (NSCLC). MATERIALS AND METHODS: Chemosensitivity to ALM and other drugs was assessed by succinate dehydrogenase inhibition (SDI) test in 69 NSCLC samples (55 adenocarcinomas, and 14 squamous cell carcinomas). The mRNA expression levels of Alimta®-target enzymes [thymidylate synthase (TYMS); dihydrofolate reductase (DHFR) and glycinamide ribonucleotide formyltransferase (GARFT)], Alimta®-metabolizing enzymes [γ-glutamyl hydrase (GGH) and folylpolyglutamate synthase] and an Alimta® transporter [reduce folate carrier (RFC)] were measured and examined for potential correlations to chemosensitivity...
December 2016: Anticancer Research
https://www.readbyqxmd.com/read/27919738/long-term-ethanol-self-administration-induces-%C3%AE-fosb-in-male-and-female-adolescent-but-not-in-adult-wistar-rats
#16
Aranza Wille-Bille, Soledad de Olmos, Leonardo Marengo, Florencia Chiner, Ricardo Marcos Pautassi
Early-onset ethanol consumption predicts later development of alcohol use disorders. Age-related differences in reactivity to ethanol's effects may underlie this effect. Adolescent rats are more sensitive and less sensitive than adults to the appetitive and aversive behavioral effects of ethanol, respectively, and more sensitive to the neurotoxic effects of experimenter-administered binge doses of ethanol. However, less is known about age-related differences in the neural consequences of self-administered ethanol...
December 2, 2016: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/27919709/evaluation-of-anti-zika-virus-activities-of-broad-spectrum-antivirals-and-nih-clinical-collection-compounds-using-a-cell-based-high-throughput-screen-assay
#17
Robert S Adcock, Yong-Kyu Chu, Jennifer E Golden, Dong-Hoon Chung
Recent studies have clearly underscored the association between Zika virus (ZIKV) and severe neurological diseases such as microcephaly and Guillain-Barre syndrome. Given the historical complacency surrounding this virus, however, no significant antiviral screenings have been performed to specifically target ZIKV. As a result, there is an urgent need for a validated screening method and strategy that is focused on highlighting potential anti-ZIKV inhibitors that can be further advanced via rigorous validation and optimization...
December 2, 2016: Antiviral Research
https://www.readbyqxmd.com/read/27919695/metabolomics-identifies-perturbations-in-amino-acid-metabolism-in-the-prefrontal-cortex-of-the-learned-helplessness-rat-model-of-depression
#18
Xinyu Zhou, Lanxiang Liu, Yuqing Zhang, Juncai Pu, Lining Yang, Chanjuan Zhou, Shuai Yuan, Hanping Zhang, Peng Xie
Major depressive disorder is a serious psychiatric condition associated with high rates of suicide and is a leading cause of health burden worldwide. However, the underlying molecular mechanisms of major depression are still essentially unclear. In our study, a non-targeted gas chromatography-mass spectrometry-based metabolomics approach was used to investigate metabolic changes in the prefrontal cortex of the learned helplessness rat model of depression. Body-weight measurements and behavioral tests including the active escape test, sucrose preference test, forced swimming test, elevated plus-maze and open field test were used to assess changes in the behavioral spectrum after inescapable footshock stress...
December 2, 2016: Neuroscience
https://www.readbyqxmd.com/read/27919554/quantitative-structure-property-relationships-for-predicting-sorption-of-pharmaceuticals-to-sewage-sludge-during-waste-water-treatment-processes
#19
L Berthod, D C Whitley, G Roberts, A Sharpe, R Greenwood, G A Mills
Understanding the sorption of pharmaceuticals to sewage sludge during waste water treatment processes is important for understanding their environmental fate and in risk assessments. The degree of sorption is defined by the sludge/water partition coefficient (Kd). Experimental Kd values (n=297) for active pharmaceutical ingredients (n=148) in primary and activated sludge were collected from literature. The compounds were classified by their charge at pH7.4 (44 uncharged, 60 positively and 28 negatively charged, and 16 zwitterions)...
December 2, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27919446/immunohistochemistry-as-an-accurate-tool-for-evaluating-braf-v600e-mutation-in-130-samples-of-papillary-thyroid-cancer
#20
Zakaria Y Abd Elmageed, Andrew B Sholl, Koji Tsumagari, Zaid Al-Qurayshi, Fulvio Basolo, Krzysztof Moroz, A Hamid Boulares, Paul Friedlander, Paulo Miccoli, Emad Kandil
BACKGROUND: BRAF(V600E) mutation has been investigated by immunohistochemistry and has shown high sensitivity and specificity. We aim to investigate the accuracy of immunohistochemistry versus molecular testing of BRAF(V600E) in papillary thyroid cancer using a large number of polymerase chain reaction-positive BRAF(V600E) papillary thyroid cancer tissues. METHODS: We stained 130 formalin-fixed papillary thyroid cancer specimens using the VE1 antibody: 100 BRAF(V600E) positive and 30 BRAF(V600E) negative confirmed by PCR...
December 2, 2016: Surgery
keyword
keyword
32322
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"