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https://www.readbyqxmd.com/read/28820491/mapping-of-qtls-for-seed-phorbol-esters-a-toxic-chemical-in-jatropha-curcas-l
#1
Kitiya Amkul, Kularb Laosatit, Prakit Somta, Sangrea Shim, Suk-Ha Lee, Patcharin Tanya, Peerasak Srinives
Jatropha (Jatropha curcas L.) is an oil-bearing plant that has potential to be cultivated as a biodiesel crop. The seed cake after oil extraction has 40-50% protein that can be used in animal feeds. A major limitation in utilizing the cake is the presence of phorbol esters (PE), a heat-tolerant toxic chemical. To identify the quantitative trait loci (QTLs) for PE, we constructed a genetic linkage map from an F₂ population of 95 individuals from a cross "Chai Nat" × "M10" using 143 simple sequence repeat (SSR) markers...
August 18, 2017: Genes
https://www.readbyqxmd.com/read/28813529/natural-and-artificial-feeding-management-before-weaning-promote-different-rumen-microbial-colonization-but-not-differences-in-gene-expression-levels-at-the-rumen-epithelium-of-newborn-goats
#2
Leticia Abecia, Elisabeth Jiménez, Gonzalo Martínez-Fernandez, A Ignacio Martín-García, Eva Ramos-Morales, Eric Pinloche, Stuart E Denman, C Jamie Newbold, David R Yáñez-Ruiz
The aim of this work was to evaluate the effect of feeding management during the first month of life (natural with the mother, NAT, or artificial with milk replacer, ART) on the rumen microbial colonization and the host innate immune response. Thirty pregnant goats carrying two fetuses were used. At birth one kid was taken immediately away from the doe and fed milk replacer (ART) while the other remained with the mother (NAT). Kids from groups received colostrum during first 2 days of life. Groups of four kids (from ART and NAT experimental groups) were slaughtered at 1, 3, 7, 14, 21 and 28 days of life...
2017: PloS One
https://www.readbyqxmd.com/read/28808725/the-role-of-the-capping-bond-effect-on-pyclen-nat-y-3-90-y-3-chelates-full-control-of-the-regiospecific-n-functionalization-makes-the-difference
#3
Mariane Le Fur, Maryline Beyler, Enikő Molnár, Olivier Fougère, David Esteban-Gómez, Gyula Tircsó, Carlos Platas-Iglesias, Nicolas Lepareur, Olivier Rousseaux, Raphaël Tripier
Thanks to a smart regiospecific N-functionalization, a pyclen based ligand bearing one picolinate and two acetate arms organized in a dissymmetric manner was synthesized for Y(3+) complexation, and compared to its symmetric analogue. The nature of the capping bonds around the metal coordination environment has a dramatic effect on the properties of the chelate, the (nat)Y(3+) and (90)Y(3+) dissymmetric derivatives presenting enhanced thermodynamic stability and kinetic inertness.
August 15, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28805496/natural-antisense-transcripts-drive-a-regulatory-cascade-controlling-c-myc-transcription
#4
Sara Napoli, Valentina Piccinelli, Sarah Mapelli, Giuseppina Pisignano, Carlo V Catapano
Cis-natural antisense transcripts (cis-NATs) are long noncoding RNAs transcribed from the opposite strand and overlapping coding and noncoding genes on the sense strand. cis-NATs are widely present in the human genome and can be involved in multiple mechanisms of gene regulation. Here, we describe the presence of cis-NATs in the 3' distal region of the c-MYC locus and investigate their impact on transcriptional regulation of this key oncogene in human cancers. We found that cis-NATs are produced as consequence of the activation of cryptic transcription initiation sites in the 3' distal region downstream of the c-MYC 3'UTR...
August 14, 2017: RNA Biology
https://www.readbyqxmd.com/read/28804573/changing-landscape-of-hepatitis-c-virus-positive-donors
#5
Catherine E Kling, Ajit P Limaye, Lena Sibulesky
With the introduction of the new highly effective antiviral therapies, there has been a dramatic increase in the use of the hepatitis C virus (HCV)-positive livers in HCV-positive recipients. In the majority of studies, HCV positivity was defined as a donor testing HCV Ab positive. In 2015, all Organ Procurement Organizations were mandated to perform and report HCV Nucleic Acid Amplification Testing (NAT) results on all deceased and living donors. Studies are not yet available on how organs are being utilized based on NAT status and whether NAT status affects recipient outcomes...
July 18, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28796232/reconstitution-of-mouse-oogenesis-in-a-dish-from-pluripotent-stem-cells
#6
Katsuhiko Hayashi, Orie Hikabe, Yayoi Obata, Yuji Hirao
This protocol is an extension to: Nat. Protoc. 8, 1513-1524 (2013); doi: 10.1038/nprot.2013.090; published online 11 July 2013Generation of functional oocytes in culture from pluripotent stem cells should provide a useful model system for improving our understanding of the basic mechanisms underlying oogenesis. In addition, it has potential applications as an alternative source of oocytes for reproduction. Using the most advanced mouse model in regard to reproductive engineering and stem cell biology, we previously developed a culture method that produces functional primorial germ cells starting from pluripotent cells in culture and described it in a previous protocol...
September 2017: Nature Protocols
https://www.readbyqxmd.com/read/28782487/natalizumab-changes-the-peripheral-profile-of-the-th17-panel-in-ms-patients-new-mechanisms-of-action
#7
Rodica Ioana Bălașa, Simu Mihaela, Septimiu Voidăzan, Laura Iulia Bărcuțean, Zoltan Bajko, Adina Huțanu, Iunius Simu, Smaranda Maier
INTRODUCTION: Natalizumab (NAT) is an effective treatment for relapsing remitting multiple sclerosis (RRMS),as it makes the blood-brain-barrier impenetrable bybinding to the α4integrin subunit. The objectives of our study were to find new peripheral mechanisms of action of NAT and new biomarkers of treatment response. MATERIAL AND METHODS: We prospectively assessed the serum levels of 15 cytokines from the Th17 Cytokine Panelusing Bio-plex Pro Human in a group of 29 RRMS patients treated with NAT and 29 healthy subjects(HS) at inclusion and after 8 months of NAT treatment...
August 7, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28780131/commentary-on-clonal-evolution-of-chemotherapy-resistant-urothelial-carcinoma-faltas-bm-prandi-d-tagawa-st-molina-am-nanus-dm-sternberg-c-rosenberg-j-mosquera-jm-robinson-b-elemento-o-sboner-a-beltran-h-demichelis-f-rubin-ma-nat-genet-2016-oct-17-http-dx-doi
#8
Byron H Lee
Chemotherapy-resistant urothelial carcinoma has no uniformly curative therapy. Understanding how selective pressure from chemotherapy directs the evolution of urothelial carcinoma and shapes its clonal architecture is a central biological question with clinical implications. To address this question, we performed whole-exome sequencing and clonality analysis of 72 urothelial carcinoma samples, including 16 matched sets of primary and advanced tumors prospectively collected before and after chemotherapy. Our analysis provided several insights that are as follows: (1) chemotherapy-treated urothelial carcinoma is characterized by intrapatient mutational heterogeneity, and most mutations are not shared; (2) both branching evolution and metastatic spread are very early events in the natural history of urothelial carcinoma; (3) chemotherapy-treated urothelial carcinoma is enriched with clonal mutations involving L1 cell-adhesion molecule and integrin signaling pathways; and (4) APOBEC-induced mutagenesis is clonally enriched in chemotherapy-treated urothelial carcinoma and continues to shape the evolution of urothelial carcinoma throughout its lifetime...
August 2, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28771238/the-mini-flotac-technique-for-the-diagnosis-of-helminth-and-protozoan-infections-in-humans-and-animals
#9
Giuseppe Cringoli, Maria P Maurelli, Bruno Levecke, Antonio Bosco, Jozef Vercruysse, Jürg Utzinger, Laura Rinaldi
This protocol is an extension to: Nat. Protoc. 5, 503-515 (2010); doi: 10.1038/nprot.2009.235; published online 25 February 2010The FLOTAC is a sensitive, accurate, and precise technique for the diagnosis of protozoan and helminth infections in humans and animals. However, it requires centrifugation, and hence might be out of reach in resource-constrained settings. As an extension of the original FLOTAC protocol, this protocol describes the Mini-FLOTAC technique, a logical evolution of FLOTAC conceived to perform multivalent, qualitative, and quantitative diagnosis of helminth and protozoan infections in human and animal feces, and urine...
September 2017: Nature Protocols
https://www.readbyqxmd.com/read/28766938/rhenium-and-technetium-oxo-complexes-with-thioamide-derivatives-of-pyridylhydrazine-bifunctional-chelators-conjugated-to-the-tumour-targeting-peptides-octreotate-and-cyclic-rgdfk
#10
Andrea J North, John A Karas, Michelle T Ma, Philip J Blower, Uwe Ackermann, Jonathan M White, Paul S Donnelly
This research aimed to develop new tumor targeted theranostic agents taking advantage of the similarities in coordination chemistry between technetium and rhenium. A γ-emitting radioactive isotope of technetium is commonly used in diagnostic imaging, and there are two β(-) emitting radioactive isotopes of rhenium that have the potential to be of use in radiotherapy. Variants of the 6-hydrazinonicotinamide (HYNIC) bifunctional ligands have been prepared by appending thioamide functional groups to 6-hydrazinonicotinamide to form pyridylthiosemicarbazide ligands (SHYNIC)...
August 2, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28764454/simulating-the-chan-hudspeth-experiment-on-an-active-excised-cochlear-segment
#11
Amir Nankali, Karl Grosh
Hearing relies on a series of coupled electrical, acoustical, and mechanical interactions inside the cochlea that enable sound processing. The local structural and electrical properties of the organ of Corti (OoC) and basilar membrane give rise to the global, coupled behavior of the cochlea. However, it is difficult to determine the root causes of important behavior, such as the mediator of active processes, in the fully coupled in vivo setting. An alternative experimental approach is to use an excised segment of the cochlea under controlled electrical and mechanical conditions...
July 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28763788/measurement-of-activation-cross-section-of-long-lived-products-in-deuteron-induced-nuclear-reactions-on-palladium-in-the-30-50mev-energy-range
#12
F Ditrói, F Tárkányi, S Takács, A Hermanne, A V Ignatyuk
Excitation functions were measured in the 31-49.2MeV energy range for the (nat)Pd(d,xn)(111,110m,106m,105,104g,103)Ag, (nat)Pd(d,x) (111m,109,101,100)Pd, (nat)Pd(d,x), (105,102m,102g,101m,101g,100,99m,99g)Rh and (nat)Pd(d,x)(103,97)Ru nuclear reactions by using the stacked foil irradiation technique. The experimental results are compared with our previous results and with the theoretical predictions calculated with the ALICE-D, EMPIRE-D and TALYS (TENDL libraries) codes.
July 26, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28762969/exploring-charge-density-analysis-in-crystals-at-high-pressure-data-collection-data-analysis-and-advanced-modelling
#13
Nicola Casati, Alessandro Genoni, Benjamin Meyer, Anna Krawczuk, Piero Macchi
The possibility to determine electron-density distribution in crystals has been an enormous breakthrough, stimulated by a favourable combination of equipment for X-ray and neutron diffraction at low temperature, by the development of simplified, though accurate, electron-density models refined from the experimental data and by the progress in charge density analysis often in combination with theoretical work. Many years after the first successful charge density determination and analysis, scientists face new challenges, for example: (i) determination of the finer details of the electron-density distribution in the atomic cores, (ii) simultaneous refinement of electron charge and spin density or (iii) measuring crystals under perturbation...
August 1, 2017: Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials
https://www.readbyqxmd.com/read/28761934/metabolic-fingerprints-from-the-human-oral-microbiome-reveal-a-vast-knowledge-gap-of-secreted-small-peptidic-molecules
#14
Anna Edlund, Neha Garg, Hosein Mohimani, Alexey Gurevich, Xuesong He, Wenyuan Shi, Pieter C Dorrestein, Jeffrey S McLean
Recent research indicates that the human microbiota play key roles in maintaining health by providing essential nutrients, providing immune education, and preventing pathogen expansion. Processes underlying the transition from a healthy human microbiome to a disease-associated microbiome are poorly understood, partially because of the potential influences from a wide diversity of bacterium-derived compounds that are illy defined. Here, we present the analysis of peptidic small molecules (SMs) secreted from bacteria and viewed from a temporal perspective...
July 2017: MSystems
https://www.readbyqxmd.com/read/28760659/no-causal-association-between-25-hydroxyvitamin-d-and-features-of-skin-aging-evidence-from-a-bidirectional-mendelian-randomization-study
#15
Raymond Noordam, Merel A Hamer, Luba M Pardo, Tamara van der Nat, Jessica C Kiefte-de Jong, Manfred Kayser, P Eline Slagboom, André Uitterlinden, M Carola Zillikens, Marian Beekman, Tamar Nijsten, Diana van Heemst, David A Gunn
Data from in-vitro experiments suggest vitamin D reduces the rate of skin aging whereas population studies suggest the opposite, most likely due to confounding by UV-exposure. We investigated whether there are causal associations between 25-hydroxyvitamin D concentrations and features of skin aging in a bidirectional Mendelian Randomization Study. In the Rotterdam Study (N=3,831; 58.2% women, median age 66.5 years) and Leiden Longevity Study (N=661; 50.5% women, median age 63.1 years), facial skin aging features (perceived age, wrinkling, pigmented spots) were assessed either manually or digitally...
July 28, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28758689/the-antiphasic-regulatory-module-comprising-cdf5-and-its-antisense-rna-flore-links-the-circadian-clock-to-photoperiodic-flowering
#16
Rossana Henriques, Huan Wang, Jun Liu, Marc Boix, Li-Fang Huang, Nam-Hai Chua
Circadian rhythms of gene expression are generated by the combinatorial action of transcriptional and translational feedback loops as well as chromatin remodelling events. Recently, long noncoding RNAs (lncRNAs) that are natural antisense transcripts (NATs) to transcripts encoding central oscillator components were proposed as modulators of core clock function in mammals (Per) and fungi (frq/qrf). Although oscillating lncRNAs exist in plants, their functional characterization is at an initial stage. By screening an Arabidopsis thaliana lncRNA custom-made array we identified CDF5 LONG NONCODING RNA (FLORE), a circadian-regulated lncRNA that is a NAT of CDF5...
July 31, 2017: New Phytologist
https://www.readbyqxmd.com/read/28758169/diterpenoids-from-isodon-species-an-update
#17
REVIEW
Miao Liu, Wei-Guang Wang, Han-Dong Sun, Jian-Xin Pu
Covering: December 2005 to June 2016. Previous review: Nat. Prod. Rep., 2006, 23, 673-698Over the last decade, great efforts have been made to conduct phytochemistry research on the genus Isodon, which have led to the isolation and identification of a number of diterpenoids. At the same time, these newly reported diterpenoids with diverse structures have led to new findings on their biological functions and chemical synthesis research. In this update, we review more than 600 new diterpenoids, including their structures, classifications, biogenetic pathways, bioactivities, and chemical synthesis...
July 31, 2017: Natural Product Reports
https://www.readbyqxmd.com/read/28754422/state-of-the-art-vest-nile-virus-circulation-surveillance-in-italy-and-transfusion-risk-early-prevention-methods
#18
C Velati, P Angelini, S Pupella
After the Chikungunya outbreak in 2007 in Italy, a national Plan for the surveillance of human vector-borne diseases has been implemented and annually updated on the basis of the epidemiological changes based-evidences. The transfusion Authorities cooperates, since 2008, with public health services and veterinary (entomological and ornithological) surveillance systems. In some Italian regions, a common protocol for exchanging data is in place to identify the West Nile Virus (WNV) circulation in birds and mosquitoes: the goal is to anticipate the introduction of WNV-NAT screening in blood donors and, on the other hand, to limit testing only in geographic areas where the virus circulation is actual...
July 25, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28747958/the-role-of-n-acetyl-transferases-on-isoniazid-resistance-from-mycobacterium-tuberculosis-and-human-an-in-silico-approach
#19
Ameeruddin Nusrath Unissa, Swathi Sukumar, Luke Elizabeth Hanna
BACKGROUND: N-acetyl transferase (NAT) inactivates the pro-drug isoniazid (INH) to N-acetyl INH through a process of acetylation, and confers low-level resistance to INH in Mycobacterium tuberculosis (MTB). Similar to NAT of MTB, NAT2 in humans performs the same function of acetylation. Rapid acetylators, may not respond to INH treatment efficiently, and could be a potential risk factor, for the development of INH resistance in humans. METHODS: To understand the contribution of NAT of MTB and NAT2 of humans in developing INH resistance using in silico approaches, in this study, the wild type (WT) and mutant (MT)-NATs of MTB, and humans, were modeled and docked, with substrates and product (acetyl CoA, INH, and acetyl INH)...
July 2017: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28741837/immunological-and-virological-response-to-antiretroviral-treatment-in-migrant-and-native-men-and-women-in-western-europe-is-benefit-equal-for-all
#20
(no author information available yet)
OBJECTIVES: The aim of the study was to evaluate differences in immunovirological response to combination antiretroviral therapy (cART) in migrant and native men and women within a European collaboration of HIV cohorts Collaboration of Observational HIV Epidemiological Research in Europ (COHERE) in EuroCoord, 2004-2013. METHODS: Migrants were defined as those with geographical origin (GO) different from the reporting country and were grouped as originating from Western Europe and Western Countries (WEWC), Eastern Europe (EE), North Africa and the Middle East (NAME), sub-Saharan Africa (SSA), Latin America (LA), Caribbean (CRB) and Asia/Oceania (ASIA/OCE)...
July 25, 2017: HIV Medicine
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