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https://www.readbyqxmd.com/read/28110414/expression-of-the-citrus-cstip2-1-gene-improves-tobacco-plant-growth-antioxidant-capacity-and-physiological-adaptation-under-stress-conditions
#1
Cristina P S Martins, Diana M Neves, Luciana C Cidade, Amanda F S Mendes, Delmira C Silva, Alex-Alan F Almeida, Mauricio A Coelho-Filho, Abelmon S Gesteira, Walter S Soares-Filho, Marcio G C Costa
Overexpression of the citrus CsTIP2;1 improves plant growth and tolerance to salt and drought stresses by enhancing cell expansion, H 2 O 2 detoxification and stomatal conductance. Tonoplast intrinsic proteins (TIPs) are a subfamily of aquaporins, belonging to the major intrinsic protein family. In a previous study, we have shown that a citrus TIP isoform, CsTIP2;1, is highly expressed in leaves and also transcriptionally regulated in leaves and roots by salt and drought stresses and infection by 'Candidatus Liberibacter asiaticus', the causal agent of the Huanglongbing disease, suggesting its involvement in the regulation of the flow of water and nutrients required during both normal growth and stress conditions...
January 21, 2017: Planta
https://www.readbyqxmd.com/read/28109742/development-of-a-new-uplc-esi-ms-ms-method-for-the-determination-of-biopterin-and-neopterin-in-dried-blood-spot
#2
Silvia Santagata, Emanuele Di Carlo, Carla Carducci, Vincenzo Leuzzi, Antonio Angeloni, Claudia Carducci
BACKGROUND: (6R)-5,6,7,8-tetrahydrobiopterin (BH4) deficiencies are rare inherited defects of synthesis or regeneration of BH4. Due to the resulting hyperphenylalaninemia (HPA), some of them are detectedby newborn screening and require the assessment of the pattern of neopterin (Neo) and biopterin (Bio) excretion in urine to be confirmed. Aim of presentstudy was to develop a method for the measurement of these diagnostic biomarkers in dried blood spot (DBS). METHODS: After DBS extraction, samples were filtered and injected into the UPLC column coupled with atandem mass spectrometer working in positive electrospray ionization...
January 18, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28109663/sector-based-vocs-emission-factors-and-source-profiles-for-the-surface-coating-industry-in-the-pearl-river-delta-region-of-china
#3
Zhuangmin Zhong, Qing'e Sha, Junyu Zheng, Zibing Yuan, Zongjiang Gao, Jiamin Ou, Zhuoyun Zheng, Cheng Li, Zhijiong Huang
Accurate depiction of VOCs emission characteristics is essential for the formulation of VOCs control strategies. As one of the continuous efforts in improving VOCs emission characterization in the Pearl River Delta (PRD) region, this study targeted on surface coating industry, the most important VOCs emission sources in the PRD. Sectors in analysis included shipbuilding coating, wood furniture coating, metal surface coating, plastic surface coating, automobile coating and fabric surface coating. Sector-based field measurement was conducted to characterize VOCs emission factors and source profiles in the PRD...
January 18, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28109602/strategies-to-gain-body-condition-score-in-pasture-based-dairy-cows-during-late-lactation-and-the-far-off-nonlactating-period-and-their-interaction-with-close-up-dry-matter-intake
#4
J R Roche, A Heiser, M D Mitchell, M A Crookenden, C G Walker, J K Kay, M Vailati Riboni, J J Loor, S Meier
In pasture-based systems, cows are generally thinner at the end of lactation than cows fed total mixed rations and, as a result, over-feeding of metabolizable energy (ME) during the far-off nonlactating period is a standard management policy to achieve optimum calving body condition score (BCS). An alternative would be to manage cows to gain BCS through late lactation, such that cows ended lactation close to optimum calving BCS and maintenance of BCS through to calving. We sought to quantify the effect of moderate or excessive ME intakes during the far-off nonlactating period in cows that had been managed to gain or maintain BCS through late lactation and whether the far-off management strategy interacted with close-up level of feeding...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109599/effect-of-intramammary-infusion-of-chitosan-hydrogels-at-drying-off-on-bovine-mammary-gland-involution
#5
S Lanctôt, P Fustier, A R Taherian, B Bisakowski, X Zhao, P Lacasse
The transition from lactation to the dry period in dairy cows is a period of high risk for acquiring new intramammary infections. This risk is reduced when the involution of the mammary gland is completed. Accordingly, approaches that speed up the involution process after drying-off could reduce the incidence of mastitis. The current study aimed to develop a biological response modifier that could be injected into cow teats to promote immune cell migration and speed up involution. Chitosan, a natural polysaccharide derived from chitin, is able to trigger host innate immunity...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109185/folding-of-intrinsically-disordered-plant-lea-proteins-is-driven-by-glycerol-induced-crowding-and-the-presence-of-membranes
#6
Anne Bremer, Martin Wolff, Anja Thalhammer, Dirk K Hincha
Late embryogenesis abundant (LEA) proteins are related to cellular dehydration tolerance. Most LEA proteins are predicted to have no stable secondary structure in solution, i.e. to be intrinsically disordered proteins (IDPs), but they may acquire α-helical structure upon drying. In the model plant Arabidopsis thaliana the LEA proteins COR15A and COR15B are highly induced upon cold treatment and are necessary for the plants to attain full freezing tolerance. Freezing leads to increased intracellular crowding due to dehydration by extracellular ice crystals...
January 21, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28108408/effect-of-drying-conditions-on-crystallinity-of-amylose-nanoparticles-prepared-by-nanoprecipitation
#7
Xiaoxia Yan, Yanjiao Chang, Qian Wang, Youjia Fu, Jiang Zhou
In this study, amylose nanoparticles prepared by nanoprecipitation were dried at different conditions. The crystalline structure, crystallinity, re-dispersibility and morphological characteristic of the amylose nanoparticles after drying were investigated. X-ray diffraction analysis revealed that the V-type crystalline structure of the amylose nanoparticles formed in the drying process instead of the precipitation process, and drying condition significantly affects the crystallinity. The temperature cycles drying at 4°C and 40°C considerably increased crystallinity of the amylose nanoparticles, 24h (4/40°C, 12h/12h) drying under 11% relative humidity could give rise to a crystallinity up to 50...
January 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28108382/new-xanthones-and-cytotoxic-constituents-from-garcinia-mangostana-fruit-hulls-against-human-hepatocellular-breast-and-colorectal-cancer-cell-lines
#8
Gamal A Mohamed, Ahmed M Al-Abd, Ali M El-Halawany, Hossam M Abdallah, Sabrin R M Ibrahim
ETHNOPHARMACOLOGICAL RELEVANCE: Cancer has proceeded to surpass one of the most chronic illnesses to be the major cause of mortality in both the developing and developed world. Garcinia mangostana L. (mangosteen, family Guttiferae) known as the queen of fruits, is one of the most popular tropical fruits. It is cultivated in Southeast Asian countries: Malaysia, Indonesia, Sri Lanka, Burma, Thailand, and Philippines. Traditionally, numerous parts of G. mangostana have been utilized to treat various ailments such as abdominal pain, haemorrhoids, food allergies, arthritis, leucorrhoea, gonorrhea, diarrhea, dysentery, wound infection, suppuration, and chronic ulcer...
January 17, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28108248/a-new-efficient-method-of-generating-photoaffinity-beads-for-drug-target-identification
#9
Yoichi Nishiya, Tomoko Hamada, Masayuki Abe, Michio Takashima, Kyoko Tsutsumi, Katsuya Okawa
Affinity purification is one of the most prevalent methods for the target identification of small molecules. Preparation of an appropriate chemical for immobilization, however, is a tedious and time-consuming process. A decade ago, a photoreaction method for generating affinity beads was reported, where compounds are mixed with agarose beads carrying a photoreactive group (aryldiazirine) and then irradiated with ultraviolet light under dry conditions to form covalent attachment. Although the method has proven useful for identifying drug targets, the beads suffer from inefficient ligand incorporation and tend to shrink and aggregate, which can cause nonspecific binding and low reproducibility...
January 10, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28108082/analysis-of-drugs-of-abuse-in-human-plasma-using-microextraction-by-packed-sorbents-and-ultra-high-performance-liquid-chromatography
#10
P Fernández, M González, M Regenjo, A M Ares, A M Fernández, R A Lorenzo, A M Carro
A miniaturized and simple method based on digitally programmed microextraction by packed sorbent (eVol(®)-MEPS) coupled to ultra-performance liquid chromatography (UPLC) has been developed for quantitative determination of three synthetic cathinones and seven conventional drugs of abuse and metabolites. The influence of several extraction parameters, such as washing and elution solvents were tested. In addition important variables affecting MEPS performance, namely sample volume, sorbent drying time, washing solvent volume, elution volume, number of extraction cycles, sorbent phase and pH, were evaluated using an asymmetrical screening design...
January 16, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28106988/factors-governing-the-performance-of-bauxite-for-fluoride-remediation-of-groundwater
#11
Aruna Kirani Katyayani Cherukumilli, Caroline Delaire, Susan E Amrose, Ashok J Gadgil
Globally, 200 million people drink groundwater contaminated with fluoride concentrations exceeding the World Health Organization's recommended level (WHO-MCL =1.5 mg F-/L). This study investigates the use of minimally-processed (dried/milled) bauxite ore as an inexpensive adsorbent for remediating fluoride-contaminated groundwater in resource-constrained areas. Adsorption experiments in synthetic groundwater using bauxites from Guinea, Ghana, USA, and India as single-use batch dispersive media demonstrated that doses of ~10-23 g/L could effectively remediate 10 mg F-/L...
January 20, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28106740/chemical-composition-and-antioxidant-properties-of-powders-obtained-from-different-plum-juice-formulations
#12
Anna Michalska, Aneta Wojdyło, Grzegorz P Łysiak, Adam Figiel
Among popular crops, plum (Prunus domestica L.) has received special attention due to its health-promoting properties. The seasonality of this fruit makes it impossible to consume it throughout the year, so new products in a powder form may offer an alternative to fresh consumption and may be used as high-quality natural food ingredients. A 100% plum (cultivar "Valor") juice was mixed with three different concentrations of maltodextrin or subjected to sugars removal by amberlite-XAD column, and dried using the freeze, spray, and vacuum (40, 60, and 80 °C) drying techniques...
January 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106710/banana-passion-fruit-passiflora-mollissima-kunth-l-h-bailey-microencapsulation-phytochemical-composition-and-antioxidant-capacity
#13
Almudena García-Ruiz, Amadeo Girones-Vilaplana, Paola León, Diego A Moreno, Carla M Stinco, Antonio J Meléndez-Martínez, Jenny Ruales
Passiflora mollissima (Kunth) L.H. Bailey is an exotic fruit native to South America, known as taxo in Ecuador. This paper characterizes its flavonoid and carotenoid composition and antioxidant capacity and evaluates the effect of the spray-drying process on its phytochemical composition and antioxidant capacity. A total of 18 flavonoid compounds, nine proanthocyanidins and nine flavan-3-ol monomers, were identified and quantified. Glycosides of (epi)-afzelechin stood out as the most abundant flavonoid. Three carotenoids were identified, with β-carotene having the highest concentration...
January 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28106506/ectodysplasin-a-in-biological-fluids-and-diagnosis-of-ectodermal-dysplasia
#14
J Podzus, C Kowalczyk-Quintas, S Schuepbach-Mallepell, L Willen, G Staehlin, M Vigolo, A Tardivel, D Headon, N Kirby, M L Mikkola, H Schneider, P Schneider
The tumor necrosis factor (TNF) family ligand ectodysplasin A (EDA) is produced as 2 full-length splice variants, EDA1 and EDA2, that bind to EDA receptor (EDAR) and X-linked EDA receptor (XEDAR/EDA2R), respectively. Inactivating mutations in Eda or Edar cause hypohidrotic ectodermal dysplasia (HED), a condition characterized by malformations of the teeth, hair and glands, with milder deficiencies affecting only the teeth. EDA acts early during the development of ectodermal appendages-as early as the embryonic placode stage-and plays a role in adult appendage function...
February 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28106370/redox-active-cation-intercalation-deintercalation-in-two-dimensional-layered-mno2-nanostructures-for-high-rate-electrochemical-energy-storage
#15
Pan Xiong, Renzhi Ma, Nobuyuki Sakai, Xueyin Bai, Shen Li, Takayoshi Sasaki
Two-dimensional (2D) layered materials with high intercalation pseudocapacitance have long been investigated for Li+-ion-based electrochemical energy storage. By contrast, the exploration of guest ions other than Li+ has been limited, although promising. The present study investigate the intercalation/deintercalation behaviors of various metal ions in 2D layered MnO2 with various interlayer distances, K-birnessite nanobelt (K-MnO2), its protonated form (H-MnO2), and a freeze-dried sample of exfoliated nanosheets...
January 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28105988/national-molecular-surveillance-of-recently-acquired-hiv-infections-in-germany-2013-to-2014
#16
Andrea Hauser, Alexandra Hofmann, Kirsten Hanke, Viviane Bremer, Barbara Bartmeyer, Claudia Kuecherer, Norbert Bannert
To enable an up-to-date molecular analysis of human immunodeficiency virus (HIV) genotypes circulating in Germany we have established a surveillance system based on recently acquired HIV infections. New HIV infections are reported to the Robert Koch Institute as a statutory duty for anonymous notification. In 2013 and 2014, a dried serum spot (DSS) sample was received from 6,371 newly diagnosed HIV-cases; their analysis suggested that 1,797 samples originated from a recent infection. Of these, 809 were successfully genotyped in the pol region to identify transmitted drug resistance (TDR) mutations and to determine the HIV-1 subtype...
January 12, 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/28105748/silicone-based-organic-inorganic-hybrid-aerogels-and-xerogels
#17
REVIEW
Taiyo Shimizu, Kazuyoshi Kanamori, Kazuki Nakanishi
Aerogels are attracting increasing attention due to their high thermal insulation ability as well as unique properties such as high porosity, surface area, and transparency. However, low mechanical strengths, originating from their unique porous structure, impede handling, formability, mass production, and extended applications. This minireview focuses on the strengthening of aerogels by several organic-inorganic hybridization strategies. In particular, successful strengthening methodologies, which employ organo-substituted alkoxysilanes as the single precursor for the sol-gel preparations, developed by the authors are highlighted...
January 20, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28105632/the-micro-taphonomy-of-cold-differential-microcracking-in-response-to-experimental-cold-stresses
#18
Chantal Turpin
Cold is a central feature of environments at higher latitudes and elevations. Thus, cold-induced taphonomic changes are relevant in many forensic contexts. Fifty-two lamb bone segments were used to assess the impact of cold, freeze-thaw cycles, freeze-drying, and water immersion on microstructural cracking of bone in a series of controlled exposure experiments. For each bone segment, three thin sections were examined under a light microscope. Cold exposure caused taphonomic changes in the form of microscopic cracking...
January 20, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28104710/protocol-of-a-feasibility-study-for-cognitive-assessment-of-an-ageing-cohort-within-the-southeast-asia-community-observatory-seaco-malaysia
#19
Devi Mohan, Blossom C M Stephan, Pascale Allotey, Carol Jagger, Mark Pearce, Mario Siervo, Daniel D Reidpath
INTRODUCTION: There is a growing proportion of population aged 65 years and older in low-income and middle-income countries. In Malaysia, this proportion is predicted to increase from 5.1% in 2010 to more than 15.4% by 2050. Cognitive ageing and dementia are global health priorities. However, risk factors and disease associations in a multiethnic, middle-income country like Malaysia may not be consistent with those reported in other world regions. Knowing the burden of cognitive impairment and its risk factors in Malaysia is necessary for the development of management strategies and would provide valuable information for other transitional economies...
January 19, 2017: BMJ Open
https://www.readbyqxmd.com/read/28104570/high-risk-injecting-behaviour-among-people-who-inject-pharmaceutical-opioids-in-australia
#20
Jenny Iversen, George Dertadian, Louise Geddes, Lisa Maher
BACKGROUND: Use of opioid analgesic medicines has doubled globally over the past decade, with a concomitant increase in prevalence of injection of pharmaceutical opioids (PO), including in Australia. This study investigates types of PO injected, methods used to prepare PO for injection and correlates of recent (last 6 months) PO injection among a large national sample of people who inject drugs (PWID). METHODS: The Australian NSP Survey (ANSPS), conducted annually at ∼50 NSP services across Australia, consists of a brief self-administered questionnaire and provision of a capillary dried blood spot for HIV and hepatitis C antibody testing...
January 16, 2017: International Journal on Drug Policy
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