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https://www.readbyqxmd.com/read/28821232/genomic-transcriptomic-and-proteomic-approaches-towards-understanding-the-molecular-mechanisms-of-salt-tolerance-in-frankia-strains-isolated-from-casuarina-trees
#1
Rediet Oshone, Mariama Ngom, Feixia Chu, Samira Mansour, Mame Ourèye Sy, Antony Champion, Louis S Tisa
BACKGROUND: Soil salinization is a worldwide problem that is intensifying because of the effects of climate change. An effective method for the reclamation of salt-affected soils involves initiating plant succession using fast growing, nitrogen fixing actinorhizal trees such as the Casuarina. The salt tolerance of Casuarina is enhanced by the nitrogen-fixing symbiosis that they form with the actinobacterium Frankia. Identification and molecular characterization of salt-tolerant Casuarina species and associated Frankia is imperative for the successful utilization of Casuarina trees in saline soil reclamation efforts...
August 18, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28820372/microcephaly-caused-by-lymphocytic-choriomeningitis-virus
#2
Maia Delaine, Anne-Sophie Weingertner, Antoine Nougairede, Quentin Lepiller, Samira Fafi-Kremer, Romain Favre, Rémi Charrel
We report congenital microencephaly caused by infection with lymphocytic choriomeningitis virus in the fetus of a 29-year-old pregnant women at 23 weeks' gestation. The diagnosis was made by ultrasonography and negative results for other agents and confirmed by a positive PCR result for lymphocytic choriomeningitis virus in an amniotic fluid sample.
September 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28819514/-fortuitous-detection-of-composite-heterozygous-s-c-sickle-cell-disease
#3
Asmâa Biaz, Maroua Neji, Yousra Ajhoun, Samira El Machtani Idrissi, Abdellah Dami, Karim Reda, Zohra Ouzzif, Sanae Bouhsain
Composite S/C sickle cell disease accounts for 20%-30% of major sickle cell syndromes. We report a case of fortuitous detection of composite heterozygous S/C sickle cell disease in the context of retinal detachment. The patient had been hospitalized in the Department of Ophthalmology for treatment-resistant decreased visual acuity detected 06 months before. The patient's clinical history was marked by total hip replacement (THR) twelve years before. Our study highlights the wide clinical variability of sickle cell disease underlying the importance of early screening and adapted clinical monitoring of patients at-risk, in order to avoid its evolution toward irreversible organic sequelae such as sickle cell retinopathy...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28818909/draft-genome-sequence-of-grammothele-lineata-sdl-co-2015-1-a-jute-endophyte-with-a-potential-for-paclitaxel-biosynthesis
#4
Avizit Das, Oly Ahmed, A K M Abdul Baten, Samira Bushra, M Tariqul Islam, Ahlan Sabah Ferdous, Mohammad Riazul Islam, Haseena Khan
Grammothele lineata strain SDL-CO-2015-1, a basidiomycete fungus, was identified as an endophyte from a jute species, Corchorus olitorius var. 2015, and found to produce paclitaxel, a diterpenic polyoxygenated pseudoalkaloid with antitumor activity. Here, we report the draft genome sequence (42.8 Mb with 9,395 genes) of this strain.
August 17, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28812077/a-first-principles-study-of-p-type-defects-in-lacro3
#5
Samira Dabaghmanesh, Nasrin Sarmadian, Erik C Neyts, Bart Partoens
Recently, Sr-doped LaCrO3 has been experimentally introduced as a new p-type transparent conducting oxide. It is demonstrated that substituting Sr for La results in inducing p-type conductivity in LaCrO3. Performing first principles calculations we study the electronic structure and formation energy of various point defects in LaCrO3. Our results for the formation energies show that in addition to Sr, two more divalent defects, Ca and Ba, substituting for La in LaCrO3, behave as shallow acceptors in line with previous experimental reports...
August 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28811298/the-future-surgical-advances-in-men1-therapeutic-approaches-and-management-strategies
#6
Samira Mercedes Sadowski, Guillaume Cadiot, Eric Dansin, Pierre Goudet, Frédéric Triponez
Multiple endocrine neoplasia type 1 (MEN1) is a hereditary autosomal dominant disorder associated with numerous neuroendocrine tumors (NETs). Recent advances in the management of MEN1 have led to a decrease in mortality due to excess hormones; however, they have also led to an increase in mortality from malignancy, particularly NETs. The main challenges are to localize these tumors, to select those that need therapy because of the risk of aggressive behavior, and to select the appropriate therapy associated with minimal morbidity...
August 15, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/28807907/an-original-chemical-series-of-pyrimidine-biosynthesis-inhibitors-that-boost-the-antiviral-interferon-response
#7
Marianne Lucas-Hourani, Daniel Dauzonne, Hélène Munier-Lehmann, Samira Khiar, Sébastien Nisole, Julien Dairou, Olivier Helynck, Philippe V Afonso, Frédéric Tangy, Pierre-Olivier Vidalain
De novo pyrimidine biosynthesis is a key metabolic pathway involved in multiple biosynthetic processes. Here, we identified an original series of 3-(1H-indol-3-yl)-2,3-dihydro-4H-furo[3,2-c]chromen-4-one derivatives as a new class of pyrimidine biosynthesis inhibitors formed by two edge-fused polycyclic moieties. We show that identified compounds exhibit a broad-spectrum antiviral activity as well as immunostimulatory properties, in line with recent reports linking de novo pyrimidine biosynthesis with innate defense mechanisms against viruses...
August 14, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28802897/the-different-effects-of-lithium-and-tamoxifen-on-memory-formation-and-the-levels-of-neurotrophic-factors-in-the-brain-of-male-and-female-rats
#8
Samira S Valvassori, Cenita Borges, Roger B Varela, Daniela V Bavaresco, Guilherme Bianchini, Edemilson Mariot, Camila O Arent, Wilson R Resende, Josiane Budni, João Quevedo
Lithium (Li) is a mood-stabilizing drug used in the treatment of bipolar disorder (BD). Recently, preclinical studies have demonstrated the potential of tamoxifen (TMX) in the treatment of acute episodes of BD. However, the prolonged use of TMX for mood disorders treatment is controversial. In this study, we evaluated the effects of TMX or Li on cognitive behavior, as well as the levels of neurotrophic factors in the brain of male and female rats. Male and female Wistar rats received administrations of water (control group), TMX or Li via gavage for a period of 28 days; the rats were then subjected to the open-field test (to evaluate spontaneous locomotion), and the novel object recognition and step-down inhibitory avoidance tests (to evaluate cognition)...
August 9, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28802093/clinical-aspects-of-opium-adulterated-with-lead-in-iran-a-review
#9
Samira Alinejad, Jan Aaseth, Mohammad Abdollahi, Hossein Hassanian-Moghaddam, Omid Mehrpour
Adulteration of drugs with poisonous substances during production or consumption has caused numerous health problems. Among contaminants that have the potential of producing poisonous effects are the heavy metals lead, arsenic and thallium that make up an important group of toxic substances. The emergence of these new health problems related to opioid abuse has precipitated this MiniReview on the status of the most hazardous and common opioid adulterants. In fact, adulterated opium is a major public health problem and can threaten the health of users...
August 12, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28797568/the-combination-of-a-966492-and-topotecan-for-effective-radiosensitization-on-glioblastoma-spheroids
#10
Fereshteh Koosha, Ali Neshasteh-Riz, Abbas Takavar, Nazila Eyvazzadeh, Zohreh Mazaheri, Samira Eynali, Mehdi Mousavi
Radiotherapy is one of the modalities in the treatment of glioblastoma patients, but glioma tumors are resistant to radiation and also chemotherapy drugs. Thus, researchers are investigating drugs which have radiosensitization capabilities in order to improve radiotherapy. PARP enzymes and topoisomerase I enzymes have a critical role in repairing DNA damage in tumor cells. Thus, inhibiting activity of these enzymes helps stop DNA damage repair and increase DSB lethal damages. In the current study, we investigated the combination of TPT as a topoisomerase I inhibitor, and A-966492 as a novel PARP inhibitor for further radiosensitization...
August 7, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28793836/simultaneous-wastewater-treatment-and-biogas-production-using-integrated-anaerobic-baffled-reactor-granular-activated-carbon-iabrgac-from-baker-yeast-wastewater
#11
Meghdad Pirsaheb, Samira Mohamadi, Sama Rahmatabadi, Hooshyar Hossini, Fabrício Motteran
In this study simultaneous degradation of organic matter and color removal from food processing industries wastewater using an integrated anaerobic baffled reactor-granular activated carbon (IABRGAC) was investigated. To evaluate the efficiency of IABRGAC, the effective parameters were studied such as hydraulic retention time (HRT) and GAC filling ratio. The bioreactor was operated at 3, 4, 5 d of HRT and GAC filling ratio of 20%, 35% and 50%. The parameters were evaluated in steady state condition. To analyses and optimizing the independent operating variables, response surface methodology was applied...
August 9, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28791555/oxidative-damage-to-pseudomonas-aeruginosa-atcc-27833-and-staphylococcus-aureus-atcc-24213-induced-by-cuo-nps
#12
Ana Laura Ulloa-Ogaz, Hilda Amelia Piñón-Castillo, Laila Nayzzel Muñoz-Castellanos, Martha Samira Athie-García, María De Lourdes Ballinas-Casarrubias, José Guadalupe Murillo-Ramirez, Luis Ángel Flores-Ongay, Robert Duran, Erasmo Orrantia-Borunda
The cytotoxicity of nanoparticles (NPs) and their properties are important issues in nanotechnology research. Particularly, NPs affect the metabolism of microorganisms due to NP interactions with some biomolecules. In order to assess the mechanisms underlying NPs toxicity, we studied the damage caused by copper oxide nanoparticles (CuO-NPs) on Staphylococcus aureus ATCC 24213 and Pseudomonas aeruginosa ATCC 27833. Spherical CuO-NPs characterized by their diameter (13 ± 3 nm) were synthesized with a maximum of 254 nm...
August 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28782832/aav-delivery-of-grp78-bip-promotes-adaptation-of-human-rpe-cell-to-er-stress
#13
Shima Ghaderi, Shahin Ahmadian, Zahra-Soheila Soheili, Hamid Ahmadieh, Shahram Samiei, Samira Kheitan, Ehsan Ranaei Pirmardan
Adeno associated virus (AAV)-mediated gene delivery of GRP78 (78kDa glucose-regulated protein) attenuates the condition of endoplasmic reticulum (ER) stress and prevents apoptotic loss of photoreceptors in retinitis pigmentosa (RP) rats. In the current study we overexpressed Grp78 with the help of AAV-2 in primary human retinal pigmented epithelium (hRPE) cell cultures and examined its effect on cell response to ER stress. The purpose of this work was studying potential stimulating effect of GRP78 on adaptation/pro-survival of hRPE cells under ER stress, as an in vitro model for RPE degeneration...
August 7, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28780137/the-effect-of-drinking-water-contaminated-with-perfluoroalkyl-substances-on-a-10-year-longitudinal-trend-of-plasma-levels-in-an-elderly-uppsala-cohort
#14
Jordan Stubleski, Samira Salihovic, P Monica Lind, Lars Lind, Linda Dunder, Philip McCleaf, Karin Eurén, Lutz Ahrens, Magnus Svartengren, Bert van Bavel, Anna Kärrman
BACKGROUND: In 2012, drinking water contaminated with per- and polyfluoroalkyl substances (PFASs), foremost perfluorooctanesulfonic acid (PFOS) and perfluorohexanesulfonic acid (PFHxS) at levels over 20ng/L and 40ng/L, respectively, was confirmed in Uppsala, Sweden. OBJECTIVES: We assessed how a longitudinally sampled cohort's temporal trend in PFAS plasma concentration was influenced by their residential location and determined the plausible association or disparity between the PFASs detected in the drinking water and the trend in the study cohort...
August 3, 2017: Environmental Research
https://www.readbyqxmd.com/read/28775066/the-interplay-between-iron-and-oxygen-homeostasis-with-a-particular-focus-on-the-heart
#15
Samira Lakhal-Littleton, Peter A Robbins
Iron is subject to tight homeostatic control in mammals. At the systemic level, iron homeostasis is controlled by the liver-derived hormone hepcidin acting on its target ferroportin in the gut, spleen and liver, which form the sites of iron uptake, recycling and storage, respectively. At the cellular level, iron homeostasis is dependent on the iron regulatory proteins IRP1/IRP2. Unique chemical properties of iron underpin its importance in biochemical reactions involving oxygen. As such, it is not surprising that there are reciprocal regulatory links between iron and oxygen homeostasis, operating both at the systemic and cellular levels...
August 3, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28774740/cadmium-inhibits-placental-trophoblast-cell-migration-via-mirna-regulation-of-the-transforming-growth-factor-beta-tgf-%C3%AE-pathway
#16
Samira A Brooks, Rebecca C Fry
Preeclampsia (PE), a condition during pregnancy that involves high blood pressure and proteinuria, is potentially fatal to both mother and child. PE currently has no etiology or cure but has been tied to poor placental trophoblast migration. Increased levels of the toxic metal cadmium (Cd) have been associated with increased risk of developing PE, as well as miRNA-associated regulation of the transforming growth factorbeta (TGF-β) pathway. Signal reprogramming of the TGF-β pathway via epigenetic mechanisms is hypothesized to modify placental trophoblast function...
July 31, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28772442/bioactive-glass-fiber-reinforced-pgs-matrix-composites-for-cartilage-regeneration
#17
Marina Trevelin Souza, Samira Tansaz, Edgar Dutra Zanotto, Aldo R Boccaccini
Poly(glycerol sebacate) (PGS) is an elastomeric polymer which is attracting increasing interest for biomedical applications, including cartilage regeneration. However, its limited mechanical properties and possible negative effects of its degradation byproducts restrict PGS for in vivo application. In this study, a novel PGS-bioactive glass fiber (F18)-reinforced composite was developed and characterized. PGS-based reinforced scaffolds were fabricated via salt leaching and characterized regarding their mechanical properties, degradation, and bioactivity in contact with simulated body fluid...
January 20, 2017: Materials
https://www.readbyqxmd.com/read/28769921/microrna-181-variants-regulate-t-cell-phenotype-in-the-context-of-autoimmune-neuroinflammation
#18
Samira Ghorbani, Farideh Talebi, Wing Fuk Chan, Farimah Masoumi, Mohammed Vojgani, Christopher Power, Farshid Noorbakhsh
BACKGROUND: Recent studies have revealed that multiple sclerosis (MS) lesions have distinct microRNA (miRNA) expression profiles. miR-181 family members show altered expression in MS tissues although their participation in MS pathogenesis remains uncertain. Herein, we investigated the involvement of miR-181a and miR-181b in the pathogenesis of MS and its animal model, experimental autoimmune encephalomyelitis (EAE). METHODS: miR-181a and -b levels were measured in the central nervous system (CNS) of patients with MS and mice with EAE as well as relevant leukocyte cultures by real-time RT-PCR...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28766086/anti-inflammatory-evaluation-and-characterization-of-leaf-extract-of-ananas-comosus
#19
Samira Kargutkar, S Brijesh
Ananas comosus (L.) Merr (Pineapple) is a tropical plant with an edible fruit. In the present study, the potential anti-inflammatory activity of A. comosus leaf extract (ALE) was studied. ALE prepared using soxhlet apparatus was subjected to preliminary qualitative phytochemical analysis and quantitative estimations of flavonoids and tannins. The components present in ALE were identified using liquid chromatography-mass spectrometry (LC-MS) and gas chromatography-mass spectrometry (GC-MS). Inhibitory effects of ALE on protein denaturation, and proteinase activity were assessed...
August 1, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28764659/non-steroidal-anti-inflammatory-drug-induced-acute-kidney-injury-in-the-community-dwelling-general-population-and-people-with-chronic-kidney-disease-systematic-review-and-meta-analysis
#20
Xinyu Zhang, Peter T Donnan, Samira Bell, Bruce Guthrie
BACKGROUND: Non-steroidal anti-inflammatory drugs (NSAIDs) are a common cause of adverse drug events (ADEs), but renal risks of NSAIDs are less well quantified than gastrointestinal and cardiac risks. This paper reports a systematic review of published population-based observational studies examining the risk of acute kidney injury (AKI) associated with NSAIDs in community-dwelling adults and those with pre-existing chronic kidney disease (CKD). METHODS: MEDLINE and EMBASE databases were searched until June 2016, and 3789 papers screened...
August 1, 2017: BMC Nephrology
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