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https://www.readbyqxmd.com/read/28771588/mtl-genotypes-phenotypic-switching-and-susceptibility-profiles-of-candida-parapsilosis-species-group-compared-to-lodderomyces-elongisporus
#1
Aylin Döğen, Banu Metin, Macit Ilkit, G Sybren de Hoog, Joseph Heitman
Reference isolates of Candida parapsilosis (n = 8), Candida metapsilosis (n = 6), Candida orthopsilosis (n = 7), and Lodderomyces elongisporus (n = 11) were analyzed to gain insight into their pathobiology and virulence mechanisms. Initial evaluation using BBL Chromagar Candida medium misidentified L. elongisporus isolates as C. albicans. Polymerase chain reaction analysis of isolate MTL idiomorphs revealed that all C. parapsilosis isolates were MTLa homozygous and no MTL α1, α2, a1, or a2 gene was detected in L...
2017: PloS One
https://www.readbyqxmd.com/read/28771430/evaluation-of-a-new-free-light-chain-elisa-assay-bringing-coherence-with-electrophoretic-methods
#2
Joannes F M Jacobs, Corrie M de Kat Angelino, Huberdina M L M Brouwers, Sandra A Croockewit, Irma Joosten, Renate G van der Molen
BACKGROUND: Serum free light chain (sFLC) measurements are increasingly important in the context of screening for monoclonal gammopathies, prognostic stratification, and monitoring of therapy responses. At the same time, analytical limitations have been reported with the currently available nephelometric and turbidimetric sFLC assays. We have evaluated a new quantitative sFLC ELISA for its suitability in routine clinical use. METHODS: Reference ranges of the Sebia FLC assay were calculated from 208 controls...
August 3, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28759577/modular-function-of-long-noncoding-rna-coldair-in-the-vernalization-response
#3
Dong-Hwan Kim, Yanpeng Xi, Sibum Sung
The long noncoding RNA COLDAIR is necessary for the repression of a floral repressor FLOWERING LOCUS C (FLC) during vernalization in Arabidopsis thaliana. The repression of FLC is mediated by increased enrichment of Polycomb Repressive Complex 2 (PRC2) and subsequent trimethylation of Histone H3 Lysine 27 (H3K27me3) at FLC chromatin. In this study we found that the association of COLDAIR with chromatin occurs only at the FLC locus and that the central region of the COLDAIR transcript is critical for this interaction...
July 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28757594/high-constitutive-overexpression-of-glycosyl-hydrolase-family-17-delays-floral-transition-by-enhancing-flc-expression-in-transgenic-arabidopsis
#4
Shinichi Enoki, Nozomi Fujimori, Chiho Yamaguchi, Tomoki Hattori, Shunji Suzuki
Vitis vinifera glycosyl hydrolase family 17 (VvGHF17) is a grape apoplasmic β-1,3-glucanase, which belongs to glycosyl hydrolase family 17 in grapevines. β-1,3-glucanase is not only involved in plant defense response but also has various physiological functions in plants. Although VvGHF17 expression is negatively related to the length of inflorescence in grapevines, the physiological functions of VvGHF17 are still uncertain. To clarify the physiological functions of VvGHF17, we conducted a phenotypic analysis of VvGHF17-overexpressing Arabidopsis plants...
July 25, 2017: Plants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28757000/characteristics-of-vitamin-b12-deficiency-in-patients-with-plasma-cell-disorders
#5
Caitlyn Braschi, John Doucette, Ajai Chari
BACKGROUND: Although increased rates of vitamin B12 deficiency have been reported in patients with plasma cell dyscrasias (PCDs), no mechanism has been identified. Excess free light chains (FLCs) could disrupt the renal proximal tubule receptors where B12 is reabsorbed. We sought to characterize the relationship between B12 deficiency and PCDs. We hypothesized that rates of B12 deficiency would be highest in patients with PCDs with high FLC burdens. METHODS: We reviewed the electronic medical records of 501 patients who met inclusion criteria (diagnosed PCD with documented serum B12 and FLC levels) to obtain clinical data recorded prior to patients' lowest B12 levels...
July 12, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28740501/hac1-and-haf1-histone-acetyltransferases-have-different-roles-in-uv-b-responses-in-arabidopsis
#6
Julieta P Fina, Fiorella Masotti, Sebastián P Rius, Franco Crevacuore, Paula Casati
Arabidopsis has 12 histone acetyltransferases grouped in four families: the GNAT/HAG, the MYST/HAM, the p300/CBP/HAC and the TAFII250/HAF families. We previously showed that ham1 and ham2 mutants accumulated higher damaged DNA after UV-B exposure than WT plants. In contrast, hag3 RNA interference transgenic plants showed less DNA damage and lower inhibition of plant growth by UV-B, and increased levels of UV-B-absorbing compounds. These results demonstrated that HAM1, HAM2, and HAG3 participate in UV-B-induced DNA damage repair and signaling...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28729759/transcriptome-wide-identification-and-characterization-of-starch-branching-enzyme-in-finger-millet
#7
Rajhans Tyagi, Apoorv Tiwari, Vijay Kumar Garg, Sanjay Gupta
Starch-branching enzymes (SBEs) are one of the four major enzyme classes involved in starch biosynthesis in plants and play an important role in determining the structure and physical properties of starch granules. Multiple SBEs are involved in starch biosynthesis in plants. Finger millet is calcium rich important serial crop belongs to grass family and the transcriptome data of developing spikes is available on NCBI. In this study it was try to find out the gene sequence of starch branching enzyme and annotate the sequence and submit the sequence for further use...
2017: Bioinformation
https://www.readbyqxmd.com/read/28728609/multiple-myeloma-can-be-accurately-diagnosed-in-acute-kidney-injury-patients-using-a-rapid-serum-free-light-chain-test
#8
Jennifer L J Heaney, John P Campbell, Punit Yadav, Ann E Griffin, Meena Shemar, Jennifer H Pinney, Mark T Drayson
BACKGROUND: Acute kidney injury (AKI) is common in patients with multiple myeloma (MM). Whether serum free light chain (sFLC) measurements can distinguish between myeloma and other causes of AKI requires confirmation to guide early treatment. A rapid and portable sFLC test (Seralite®) is newly available and could reduce delays in obtaining sFLC results and accelerate diagnosis in patients with unexplained AKI. This study evaluated the accuracy of Seralite® to identify MM as the cause of AKI...
July 20, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28709348/dielectric-relaxation-process-of-a-partially-unwound-helical-structure-in-ferroelectric-liquid-crystals
#9
Amit Choudhary, Ambika Bawa, Rajesh, Surinder P Singh, Ashok M Biradar
The fluctuations of unwound helical structure have been observed in deformed helix ferroelectric liquid crystal (DHFLC) and conventional FLC sample cells. The helix is partially unwound by strong anchoring on the substrates. In such sample cells, the helical decarlization lines are not observed in the texture under crossed polarized microscope. The dielectric spectroscopy is employed to observe the behavior of dielectric relaxation processes in these sample cells. A dielectric relaxation process is observed at a lower frequency than the Goldstone mode processes in DHFLC and FLC, which we call partially unwound helical mode (p-UHM)...
June 2017: Physical Review. E
https://www.readbyqxmd.com/read/28701727/free-immunoglobulin-light-chain-flc-promotes-murine-colitis-and-colitis-associated-colon-carcinogenesis-by-activating-the-inflammasome
#10
Junfan Ma, Dongyang Jiang, Xiaoting Gong, Wenwei Shao, Zhu Zhu, Weiyan Xu, Xiaoyan Qiu
Numerous studies have demonstrated that free Ig light chain (FLC), a novel inflammation mediator, participates in many inflammatory diseases by activating mast cells and extending the survival of neutrophils. However, it remains unclear whether FLC is involved in colitis and colitis-associated colon carcinogenesis (CAC). In this study, we found a significant increase in FLC in murine models of DSS (Dextran Sulfate Sodium Salt)-induced colitis and CAC compared to controls. Peptide F991, a functional blocker of FLC, significantly attenuated colitis progression, which included abrogating the development of diarrhea and tumor burden, elevating survival rate, greatly reducing the infiltration of inflammatory cells (such as ROS(+) active neutrophils), especially reducing tumorigenesis in CAC...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28700974/mechanism-of-berberine-mediated-fluconazole-susceptibility-enhancement-in-clinical-fluconazole-resistant-candida-tropicalis-isolates
#11
GaoXiang Shi, Jing Shao, TianMing Wang, DaQiang Wu, ChangZhong Wang
BACKGROUND: Candida tropicalis was one of the most common non-albicans Candida (NACA) species creating relatively high morbidity and mortality. We previously demonstrated that the antifungal effect of BBR in combination with FLC might be attributed to reactive oxygen species production, ergosterol content and efflux pump levels in a clinical C. tropicalis isolate. METHODS: we employed thirteen clinical C. tropicalis isolates as well as four standard reference strains to evaluate the antifungal activity of BBR in combination with FLC under planktonic and biofilm states by analyzing the mRNA expressions of ERG11, CDR1 and MDR1 by qRT-PCR...
September 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28693387/the-flc-locus-a-platform-for-discoveries-in-epigenetics-and-adaptation
#12
Charles Whittaker, Caroline Dean
Our understanding of the detailed molecular mechanisms underpinning adaptation is still poor. One example for which mechanistic understanding of regulation has converged with studies of life history variation is Arabidopsis thaliana FLOWERING LOCUS C (FLC). FLC determines the need for plants to overwinter and their ability to respond to prolonged cold in a process termed vernalization. This review highlights how molecular analysis of vernalization pathways has revealed important insight into antisense-mediated chromatin silencing mechanisms that regulate FLC...
July 10, 2017: Annual Review of Cell and Developmental Biology
https://www.readbyqxmd.com/read/28690064/genetic-line-comparisons-and-genetic-parameters-for-endoparasite-infections-and-test-day-milk-production-traits
#13
Katharina May, Kerstin Brügemann, Tong Yin, Carsten Scheper, Christina Strube, Sven König
Keeping dairy cows in grassland systems relies on detailed analyses of genetic resistance against endoparasite infections, including between- and within-breed genetic evaluations. The objectives of this study were (1) to compare different Black and White dairy cattle selection lines for endoparasite infections and (2) the estimation of genetic (co)variance components for endoparasite and test-day milk production traits within the Black and White cattle population. A total of 2,006 fecal samples were taken during 2 farm visits in summer and autumn 2015 from 1,166 cows kept in 17 small- and medium-scale organic and conventional German grassland farms...
September 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28687586/a-rash-with-a-heavy-heart
#14
Sergio Barros-Gomes, Niyada Naksuk, Dragan Jevremovic, Hector R Villarraga
Cardiac amyloidosis (CA) is relatively rare and frequently misdiagnosed. Other disorders presenting with increased left ventricular (LV) mass can mimic its diagnosis. This case illustrates unique findings of primary light chain (AL) amyloidosis in a patient with remarkable signs of CA. Here, we report a 49-year-old man with prior diagnosis of hypertrophy cardiomyopathy (HCM) based on an echocardiogram performed 1 year earlier that presented with 8 weeks of periorbital rash. He had numbness in the past 3 years...
July 7, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28680034/high-dose-fluconazole-in-combination-with-amphotericin-b-is-more-efficient-than-monotherapy-in-murine-model-of-cryptococcosis
#15
Julliana Ribeiro Alves Santos, Noelly Queiroz Ribeiro, Rafael Wesley Bastos, Rodrigo Assunção Holanda, Letícia Chagas Silva, Estela Rezende Queiroz, Daniel Assis Santos
Cryptococcus spp., the causative agents of cryptococcosis, are responsible for deaths of hundreds of thousands of people every year worldwide. The drawbacks of available therapeutic options are aggravated by the increased resistance of yeast to the drugs, resulting in inefficient therapy. Also, the antifungal 5FC is not available in many countries. Therefore, a combination of antifungal drugs may be an interesting option, but in vitro and theoretical data point to the possible antagonism between the main antifungals used to treat cryptococcosis, i...
July 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28674841/a-novel-smartphone-accelerometer-application-for-low-intensity-activity-and-energy-expenditure-estimations-in-overweight-and-obese-adults
#16
Sylvie Rousset, Romain Guidoux, Ludivine Paris, Nicolas Farigon, Magalie Miolanne, Clément Lahaye, Martine Duclos, Yves Boirie, Damien Saboul
Physical inactivity and sedentary behaviors are on the rise worldwide and contribute to the current overweight and obesity scourge. The loss of healthy life style benchmarks and the lack of the need to move make it necessary to provide feedback about physical and sedentary activities in order to promote active ways of life. The aim of this study was to develop a specific function adapted to overweight and obese people to identify four physical activity (PA) categories and to estimate the associated total energy expenditure (TEE)...
August 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28655069/delivery-of-parasite-cdg7_flc_0990-rna-transcript-into-intestinal-epithelial-cells-during-cryptosporidium-parvum-infection-suppresses-host-cell-gene-transcription-through-epigenetic-mechanisms
#17
Yang Wang, Ai-Yu Gong, Shibin Ma, Xiqiang Chen, Juliane K Strauss-Soukup, Xian-Ming Chen
Cryptosporidial infection causes dysregulated transcription of host genes key to intestinal epithelial homeostasis, but the underlying mechanisms remain obscure. Previous studies demonstrate that several C. parvum RNA transcripts are selectively delivered into epithelial cells during host cell invasion and may modulate gene transcription in infected cells. We report here that C. parvum infection suppresses the transcription of LRP5, SLC7A8, and IL33 genes in infected intestinal epithelium. Trans-suppression of these genes in infected host cells is associated with promoter enrichment of suppressive epigenetic markers (i...
June 27, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28650521/jmj27-an-arabidopsis-h3k9-histone-demethylase-modulates-defense-against-pseudomonas-syringae-and-flowering-time
#18
Aditya Dutta, Pratibha Choudhary, Julie Caruana, Ramesh Raina
Histone methylation is known to dynamically regulate diverse developmental and physiological processes. Histone methyl marks are written by methyltransferases and erased by demethylases, and result in modification of chromatin structure to repress or activate transcription. However, little is known about how histone methylation may regulate defense mechanisms and flowering time in plants. Here we report characterization of JmjC DOMAIN-CONTAINING PROTEIN 27 (JMJ27), an Arabidopsis JHDM2 (JmjC domain-containing histone demethylase 2) family protein, which modulates defense against pathogens and flowering time...
June 26, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28632342/variation-in-gene-regulation-underlying-annual-and-perennial-flowering-in-arabideae-species
#19
Jannice Friedman
The diversity of life history strategies within the angiosperms illustrates the evolutionary flexibility of reproductive characteristics. The number of times an individual reproduces is a key life history trait, and transitions from iteroparous perennials to semelparous annuals have occurred frequently in the flowering plants. Despite the frequency of this evolutionary transition, and the importance of annuality versus perenniality to both agriculture and ecology, understanding the molecular and genetic mechanisms involved in perennial flowering is in their infancy...
July 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28630940/fluconazole-induced-ploidy-change-in-cryptococcus-neoformans-results-from-the-uncoupling-of-cell-growth-and-nuclear-division
#20
Sophie Altamirano, Diana Fang, Charles Simmons, Shreyas Sridhar, Peipei Wu, Kaustuv Sanyal, Lukasz Kozubowski
Cryptococcus neoformans is a pathogenic yeast that causes lethal cryptococcal meningitis in immunocompromised patients. One of the challenges in treating cryptococcosis is the development of resistance to azole antifungals. Previous studies linked azole resistance to elevated numbers of copies of critical resistance genes in aneuploid cells. However, how aneuploidy is formed in the presence of azole drugs remains unclear. This study showed that treatment with inhibitory concentrations of an azole drug, fluconazole (FLC), resulted in a significant population of cells with increased DNA content, through the following defects: inhibition of budding, premature mitosis, and inhibition of cytokinesis followed by replication in the mother cell...
May 2017: MSphere
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