keyword
MENU ▼
Read by QxMD icon Read
search

molecular counting

keyword
https://www.readbyqxmd.com/read/29052615/effects-of-alcohol-abuse-on-proliferating-cells-stem-progenitor-cells-and-immature-neurons-in-the-adult-human-hippocampus
#1
Tara Wardi Le Maître, Gopalakrishnan Dhanabalan, Nenad Bogdanovic, Kanar Alkass, Henrik Druid
In animal studies, impaired adult hippocampal neurogenesis is associated with behavioral pathologies including addiction to alcohol. We hypothesize that alcohol abuse may have a detrimental effect on the neurogenic pool of the dentate gyrus in the human hippocampus. In this study we investigate whether alcohol abuse affects the number of proliferating cells, stem/progenitor cells and immature neurons in samples from postmortem human hippocampus. The specimens were isolated from deceased donors with an on-going alcohol abuse, and from controls with no alcohol overconsumption...
October 20, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29051542/the-efficacy-and-further-functional-advantages-of-random-base-molecular-barcodes-for-absolute-and-digital-quantification-of-nucleic-acid-molecules
#2
Taisaku Ogawa, Kirill Kryukov, Tadashi Imanishi, Katsuyuki Shiroguchi
Accurate quantification of biomolecules in system-wide measurements is in high demand, especially for systems with limited sample amounts such as single cells. Because of this, digital quantification of nucleic acid molecules using molecular barcodes has been developed, making, e.g., transcriptome analysis highly reproducible and quantitative. This counting scheme was shown to work using sequence-restricted barcodes, and non-sequence-restricted (random-base) barcodes that may provide a much higher dynamic range at significantly lower cost have been widely used...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29049965/development-of-a-molecular-method-for-testing-the-effectiveness-of-uv-systems-on-site
#3
Limor Nizri, Dalit Vaizel-Ohayon, Hila Ben-Amram, Yehonatan Sharaby, Malka Halpern, Hadas Mamane
We established a molecular method for quantifying ultraviolet (UV) disinfection efficacy using total bacterial DNA in a water sample. To evaluate UV damage to the DNA, we developed the "DNA damage" factor, which is a novel cultivation-independent approach that reveals UV-exposure efficiency by applying a simple PCR amplification method. The study's goal was to prove the feasibility of this method for demonstrating the efficiency of UV systems in the field using flow-through UV reactors. In laboratory-based experiments using seeded bacteria, the DNA damage tests demonstrated a good correlation between PCR products and UV dose...
October 10, 2017: Water Research
https://www.readbyqxmd.com/read/29049733/tunneling-nanotubes-are-novel-cellular-structures-that-communicate-signals-between-trabecular-meshwork-cells
#4
Kate E Keller, John M Bradley, Ying Ying Sun, Yong-Feng Yang, Ted S Acott
Purpose: The actin cytoskeleton of trabecular meshwork (TM) cells plays a role in regulating aqueous humor outflow. Many studies have investigated stress fibers, but F-actin also assembles into other supramolecular structures including filopodia. Recently, specialized filopodia called tunneling nanotubes (TNTs) have been described, which communicate molecular signals and organelles directly between cells. Here, we investigate TNT formation by TM cells. Methods: Human TM cells were labeled separately with the fluorescent dyes, DiO and DiD, or with mitochondrial dye...
October 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29046608/elucidating-the-molecular-basis-of-ppcd-effects-of-decreased-zeb1-expression-on-corneal-endothelial-cell-function
#5
Marina Zakharevich, Jaffer M Kattan, Judy L Chen, Benjamin R Lin, Aleck E Cervantes, Doug D Chung, Ricardo F Frausto, Anthony J Aldave
PURPOSE: To investigate the functional role that the zinc e-box binding homeobox 1 (ZEB1) gene, which underlies the genetic basis of posterior polymorphous corneal dystrophy 3 (PPCD3), plays in corneal endothelial cell proliferation, apoptosis, migration, and barrier function. METHODS: A human corneal endothelial cell line (HCEnC-21T) was transfected with siRNA targeting ZEB1 mRNA. Cell proliferation, apoptosis, migration, and barrier assays were performed: Cell proliferation was assessed with cell counting using a hemocytometer; cell apoptosis, induced by either ultraviolet C (UVC) radiation or doxorubicin treatment, was quantified by measuring cleaved caspase 3 (cCASP3) protein levels; and cell migration and barrier function were monitored with electric cell-substrate impedance sensing (ECIS)...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29044745/solvent-effect-on-the-photoinduced-structural-change-of-a-phosphorescent-molecular-butterfly
#6
Yingzhong Ma, Chenkun Zhou, Benjamin Doughty, Davis C Easley, Justin Deterding, Biwu Ma
Photoinduced structural changes (PSC) is one of the fundamental excited-state dynamical processes, and yet often very challenging to distinguish from competing electronic excited-state relaxation channels having similar or even comparable timescales. Here, we report a detailed study on the PSC of a pyrazolate bridged platinum(II) binuclear complex, a molecular butterfly, using time-correlated single photon counting measurements at different wavelengths and sample temperatures. Analysis of the results obtained using dichloromethane (DCM) and ethylene carbonate (EC) as solvents enabled us to reveal an unexpected, strong solvent effect on the PSC processes...
October 18, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29044676/world-health-organization-defined-eosinophilic-disorders-2017-update-on-diagnosis-risk-stratification-and-management
#7
Jason Gotlib
DISEASE OVERVIEW: The eosinophilias encompass a broad range of nonhematologic (secondary or reactive) and hematologic (primary, clonal) disorders with potential for end-organ damage. DIAGNOSIS: Hypereosinophilia has generally been defined as a peripheral blood eosinophil count greater than 1500/mm(3) and may be associated with tissue damage. After exclusion of secondary causes of eosinophilia, diagnostic evaluation of primary eosinophilias relies on a combination of morphologic review of the blood and marrow, standard cytogenetics, fluorescent in situ-hybridization, flow immunocytometry, and T-cell clonality assessment to detect histopathologic or clonal evidence for an acute or chronic myeloid or lymphoproliferative disorder...
November 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/29043003/tiaogeng-yijing-decoction-improves-the-pregnancy-outcomes-of-patients-with-poor-ovarian-response-undergoing-in-vitro-fertilization-embryo-transfer
#8
Hui Xue, Juan Dong, Huijun Xu, Xin Huang, Huangguan Dai, Cuifang Hao
The present study aimed to explore the therapeutic effects of the Tiaogeng Yijing decoction on patients with poor ovarian response (POR) undergoing in vitro fertilization-embryo transfer (IVF-ET), in addition to the underlying molecular mechanisms of these effects. A total of 40 patients were randomly and equally assigned to the treatment or control group. Patients in the treatment group received the Tiaogeng Yijing decoction continuously for three menstrual cycles in addition to microstimulation, while patients in the control group underwent microstimulation only...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29041965/enrichment-allows-identification-of-diverse-rare-elements-in-metagenomic-resistome-virulome-sequencing
#9
Noelle R Noyes, Maggie E Weinroth, Jennifer K Parker, Chris J Dean, Steven M Lakin, Robert A Raymond, Pablo Rovira, Enrique Doster, Zaid Abdo, Jennifer N Martin, Kenneth L Jones, Jaime Ruiz, Christina A Boucher, Keith E Belk, Paul S Morley
BACKGROUND: Shotgun metagenomic sequencing is increasingly utilized as a tool to evaluate ecological-level dynamics of antimicrobial resistance and virulence, in conjunction with microbiome analysis. Interest in use of this method for environmental surveillance of antimicrobial resistance and pathogenic microorganisms is also increasing. In published metagenomic datasets, the total of all resistance- and virulence-related sequences accounts for < 1% of all sequenced DNA, leading to limitations in detection of low-abundance resistome-virulome elements...
October 17, 2017: Microbiome
https://www.readbyqxmd.com/read/29036318/dimm-sc-a-dirichlet-mixture-model-for-clustering-droplet-based-single-cell-transcriptomic-data
#10
Zhe Sun, Ting Wang, Ke Deng, Xiao-Feng Wang, Robert Lafyatis, Ying Ding, Ming Hu, Wei Chen
Motivation: Single cell transcriptome sequencing (scRNA-Seq) has become a revolutionary tool to study cellular and molecular processes at single cell resolution. Among existing technologies, the recently developed droplet-based platform enables efficient parallel processing of thousands of single cells with direct counting of transcript copies using Unique Molecular Identifier (UMI). Despite the technology advances, statistical methods and computational tools are still lacking for analyzing droplet-based scRNA-Seq data...
August 2, 2017: Bioinformatics
https://www.readbyqxmd.com/read/29034933/isostaticity-and-the-solidification-of-semiflexible-polymer-melts
#11
Christian O Plaza-Rivera, Hong T Nguyen, Robert S Hoy
Using molecular dynamics simulations of a tangent-soft-sphere bead-spring polymer model, we examine the degree to which semiflexible polymer melts solidify at isostaticity. Flexible and stiff chains crystallize when they are isostatic as defined by appropriate degree-of-freedom-counting arguments. Semiflexible chains also solidify when isostatic if a generalized isostaticity criterion that accounts for the slow freezing out of configurational freedom as chain stiffness increases is employed. The configurational freedom associated with bond angles (θ) can be associated with the characteristic ratio C∞ = (1 + 〈cos(θ)〉)/(1 - 〈cos(θ)〉)...
October 16, 2017: Soft Matter
https://www.readbyqxmd.com/read/29033958/enhanced-bacterial-wilt-resistance-in-potato-through-expression-of-arabidopsis-efr-and-introgression-of-quantitative-resistance-from-solanum-commersonii
#12
Federico Boschi, Claudia Schvartzman, Sara Murchio, Virginia Ferreira, Maria I Siri, Guillermo A Galván, Matthew Smoker, Lena Stransfeld, Cyril Zipfel, Francisco L Vilaró, Marco Dalla-Rizza
Bacterial wilt (BW) caused by Ralstonia solanacearum is responsible for substantial losses in cultivated potato (Solanum tuberosum) crops worldwide. Resistance genes have been identified in wild species; however, introduction of these through classical breeding has achieved only partial resistance, which has been linked to poor agronomic performance. The Arabidopsis thaliana (At) pattern recognition receptor elongation factor-Tu (EF-Tu) receptor (EFR) recognizes the bacterial pathogen-associated molecular pattern EF-Tu (and its derived peptide elf18) to confer anti-bacterial immunity...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29032513/sudden-blast-phase-in-chronic-myeloid-leukemia-developed-during-nilotinib-therapy-after-major-molecular-response-was-achieved
#13
Yosuke Okada, Ken Sato, Shinichi Kobayashi, Shigeki Nagao, Kosuke Takano, Masahiro Teramoto, Noriaki Tachi, Toshikuni Kawamura, Toshikatsu Horiuchi, Shoichiro Kato, Reina Saga, Takaaki Maekawa, Takeshi Yamamura, Junichi Watanabe, Ayako Kobayashi, Fumihiko Kimura
Sudden blast phase (SBP) is a rare event in which patients with chronic myeloid leukemia (CML) in complete cytogenetic response (CCyR) rapidly progress to the blast phase. Few patients on second-generation tyrosine kinase inhibitors (2nd TKIs) have been reported to develop SBP. Here, we report a 45-year-old man diagnosed with CML in the chronic phase in April 2008 and immediately started on imatinib therapy. He achieved CCyR 12 months after starting imatinib therapy. Imatinib was followed by treatment with the 2nd TKIs nilotinib and dasatinib from January 2011 to yield a better response...
October 14, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/29030672/interference-free-determination-of-sub-ng-kg-1-levels-of-long-lived-93-zr-in-the-presence-of-high-concentrations-%C3%AE-g-kg-1-of-93-mo-and-93-nb-using-icp-ms-ms
#14
Panayot Petrov, Ben Russell, David N Douglas, Heidi Goenaga-Infante
Long-lived high abundance radionuclides are of increasing interest with regard to decommissioning of nuclear sites and longer term nuclear waste storage and disposal. In many cases, no routine technique is available for their measurement in nuclear waste and low-level (ng kg(-1)) environmental samples. Recent advances in ICP-MS technology offer attractive features for the selective and sensitive determination of a wide range of long-lived radionuclides. In this work, inductively coupled plasma-tandem mass spectrometry (ICP-MS/MS)-based methodology, suitable for accurate routine determinations of (93)Zr at very low (ng kg(-1)) levels in the presence of high levels (μg kg(-1)) of the isobaric interferents (93)Nb and (93)Mo (often present in nuclear waste samples), is reported for the first time...
October 13, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29030559/understanding-seed-mediated-growth-of-gold-nanoclusters-at-molecular-level
#15
Qiaofeng Yao, Xun Yuan, Victor Fung, Yong Yu, David Tai Leong, De-En Jiang, Jianping Xie
The continuous development of total synthesis chemistry has allowed many organic and biomolecules to be produced with known synthetic history-that is, a complete set of step reactions in their synthetic routes. Here, we extend such molecular-level precise reaction routes to nanochemistry, particularly to a seed-mediated synthesis of inorganic nanoparticles. By systematically investigating the time-dependent abundance of 35 intermediate species in total, we map out relevant step reactions in a model size growth reaction from molecularly pure Au25 to Au44 nanoparticles...
October 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/29029323/lncrnal20992-regulates-apoptotic-proteins-to-promote-lead-induced-neuronal-apoptosis
#16
Aruo Nan, Yangyang Jia, Xin Li, Meiling Liu, Nan Zhang, Lijian Chen, Ti Yang, Yiqin Xu, Xin Dai, Ying Cheng, Zhenzhong Liu, Yihui Ling, Yiguo Jiang
Lead is a heavy metal pollutant that is widely present in the environment and can seriously harm human health, especially the nervous system. Long noncoding RNAs (lncRNAs) play important roles in many physiological and pathological processes; however, there remains a lack of in-depth studies on the molecular mechanisms associated with lead neurotoxicity. Here, our results showed that lead exposure inhibited cell proliferation and promoted cell apoptosis. We observed that lncRNAL20992 was significantly upregulated in a lead-induced neuronal-injury cell model according to quantitative reverse transcription polymerase chain reaction...
September 25, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29026321/characteristics-and-mutation-analysis-of-ph-positive-leukemia-patients-with-t315i-mutation-receiving-tyrosine-kinase-inhibitors
#17
Peipei Xu, Dan Guo, Xiaoyan Shao, Miaoxin Peng, Bing Chen
BACKGROUND: TKIs are the first-line treatment for patients with Ph-positive (Ph+) leukemia. However, drug resistance is frequently observed, mainly due to mutations within the breakpoint cluster region-Abelson leukemia virus (BCR-ABL) kinase domain. The T315I substitution confers complete resistance to TKIs. The aim of this study was to analyze the clinical characteristics of 17 patients with T315I mutation after TKI treatment and provide a basis for prognosis. PATIENTS AND METHODS: The clinical data of 17 TKI-resistant Ph+ leukemia patients who were found to have a ABL kinase domain mutation from September 2008 to January 2017 were collected...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29026137/opiate-use-inhibits-tlr9-signaling-pathway-in-vivo-possible-role-in-pathogenesis-of-hiv-1-infection
#18
Yanyan Liao, Junjun Jiang, Bingyu Liang, Fumei Wei, Jiegang Huang, Peijiang Pan, Jinming Su, Bo Zhou, Ning Zang, Li Ye, Hao Liang
The molecular mechanism of opiate use promoting HIV-1 infection is not fully understood. TLR9 is expressed in many immune cells, including monocytes, macrophages, which can recognize viruses and viral products and consequently induce the production of antiviral factors and initiate immune responses. Previous studies have shown that chronic viral infections can overcome and impair TLR9 pathway. We aimed to explore whether opiate use enhances HIV infection through inhibition of TLR9 pathway via a population-based study...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29025062/deletion-of-spata2-by-crispr-cas9n-causes-increased-inhibin-alpha-expression-and-attenuated-fertility-in-male-mice
#19
Ie Zhao, Jianjun Zhao, Guojin Xu, Zhijuan Wang, Jie Gao, Sheng Cui, Jiali Liu
As somatic cells in the testis seminiferous tubule, Sertoli cells provide the medium for spermatogenesis. One of the important functions of Sertoli cells is synthesizing and secreting cell factors to affect the production of sperm; however, much of those molecular regulation mechanisms remain unknown. Here, we confirm the localization of protein SPATA2, spermatogenesis-associated protein 2, which had previously been shown to be highly expressed in Sertoli cells of the adult mouse testis. To further conduct a functional study, we generated SPATA2 global knockout mice via use of the CRISPR/Cas9n gene editing technology...
August 28, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29023117/molecular-engineering-of-nir-absorbing-thienopyrazine-double-donor-double-acceptor-organic-dyes-for-dscs
#20
Hammad Cheema, Adithya Peddapuram, Rebecca E Adams, Louis E McNamara, Leigh Anna Hunt, Ngoc Le, Davita L Watkins, Nathan I Hammer, Russell H Schmehl, Jared H Delcamp
The thienopyrazine (TPz) building block allows for NIR photon absorption in dye-sensitized solar cells (DSCs) when used as a π-bridge. We have synthesized and characterized 7 organic sensitizers employing thienopyrazine (TPz) as a π-bridge in a double donor, double acceptor (DD-π-AA) organic dye design. Donor groups are varied based on electron donating strength and sterics at the donor-π bridge bond with the acceptor groups varied as either carboxylic acids or benzoic acids on the π-bridge. This dye design was found to be remarkably tunable with solution absorption onsets ranging from 750 nm to near 1000 nm...
October 12, 2017: Journal of Organic Chemistry
keyword
keyword
95502
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"