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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tikhomirova N.A., Ushakova S.A., Tikhomirov A.A., Kalacheva G.S., Gros J.-B.
Заглавие : Possibility of Salicornia europaea use for the human liquid wastes inclusion into BLSS intrasystem mass exchange
Место публикации : Acta Astronautica. - 2008. - Vol. 63, Is. 7-10. - С. 1106-1110. - ISSN 00945765 (ISSN) , DOI 10.1016/j.actaastro.2008.01.003
Ключевые слова (''Своб.индексиров.''): blss--nacl turnover--salicornia europaea--space biology--acids--amides--arsenic compounds--biochemical engineering--biochemistry--biomass--cellulose--curing--drying--environmental engineering--fatty acids--garnets--health--human engineering--lipids--mineralogy--minerals--mining--nitrates--nitrogen--plants (botany)--polysaccharides--polyvinyl alcohols--renewable energy resources--silica--silicate minerals--sodium--sodium chloride--solutions--sugar (sucrose)--sugars--waste utilization--biochemical composition--biochemical substances--bioregenerative life support systems (blss)--component conditions--crude protein (cp)--dry weight (dw)--essential fatty acids--europaea--h igh concentrations--human urine--linoleic acid (la)--linolenic--lipid content--liquid wastes--mass exchanges--mineral compositions--nitrate nitrogen--nitrogen nutrition--non saturation--physico chemical processes--plant functions--plant lipids--reduced nitrogen--salicornia europaea--soluble sugars--wide spectrum--nonmetals--amides--arsenic--biochemistry--biomass--biotechnology--cellulose--curing--drying--fatty acids--lipids--nonmetals--plants--polysaccharides--sugars
Аннотация: One of the ways of solving the problem of the human liquid wastes utilization in bioregenerative life support systems (BLSS) can be the use of halophytic vegetable plant Salicornia europaea capable of accumulating sodium chloride in rather high concentrations. Since the most specific higher plant function in BLSS, which at present cannot be substituted by physicochemical processes, appears to be the biosynthesis of a wide spectrum of nutritive substances necessary for a human, the object of the given work was the investigation of the S. europaea productivity, biochemical and mineral composition when grown under close to optimal BLSS vegetative component conditions. As the use of human urine after its preliminary physicochemical processing is supposed to be the mineral solution basis for the S. europaea cultivation, it is necessary to clear up the effect of reduced nitrogen on plants growth. Ground research was carried out. Biochemical composition of the S. europaea edible part showed that crude protein was contained in the highest degree. At that the content of crude protein (24% per dry weight) and cellulose (4.7% per dry weight) was higher in the plants grown on solutions containing amide nitrogen in comparison with the plants grown on solutions with nitrate nitrogen (15.4%-3.1% correspondingly). The water-soluble sugar contents were not high in the S. europaea edible part and depending on the nitrogen nutrition form they amounted to 1.1% (amide nitrogen) and 1.5% (nitrate nitrogen). The polysaccharide number (except cellulose) was rather higher and varied from 7.7% to 8.2%. Although the lipid content in the S. europaea plants was relatively low (7% per dry weight), it was shown that the plant lipids are characterized by a high nonsaturation degree mainly due to alpha linolenic and linoleic acids. Nitrogen nutrition form did not significantly affect the S. europaea productivity, and dry edible biomass of one plant was 8.6 g. Sodium and its concentrations predominated in the plant mineral composition and amounted in average to 9% per dry weight. Thus the S. europaea being the vegetable plant it can be the source of several biochemical substances and essential fatty acids. The present work also considers the influence of nitrate and amide forms of nitrogen on S. europaea biochemical and mineral composition. В© 2008 Elsevier Ltd. All rights reserved.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuznetsov A.M., Rodicheva E.K., Medvedeva S.E.
Заглавие : Analysis of river water by bioluminescent biotests
Место публикации : Luminescence. - 1999. - Vol. 14, Is. 5. - С. 263-265. - ISSN 15227235 (ISSN)
Ключевые слова (''Своб.индексиров.''): bioluminescent bioassay--pollution--water quality--fresh water--article--bioassay--escherichia coli--freeze drying--genetic procedures--luminescence--methodology--photobacterium--russian federation--sensitivity and specificity--water pollutant--biological assay--biosensing techniques--escherichia coli--freeze drying--fresh water--luminescence--photobacterium--russia--sensitivity and specificity--water pollutants, chemical
Аннотация: The bacterial bioluminescence has high sensitivity to the action of various inhibitors of biological activity. The lyophilized luminous bacteria Photobacterium phosphoreum (Microbiosensor B17 677F) and luminous strain Escherichia coli (Microbiosensor EC) from the Culture Collection IBSO were used to create bioluminescent biotests. They have been applied in ecological monitoring to determine the overall toxicity of the Yenisei and Angara Rivers and some water sources of Altai Territory. As a rule the heaviest pollution of water in studied rivers was registered near cities and settlements. The luminous bacteria biotests are simple and convenient in work, standardized and quantitative, have rapid response to actions of different substances and high sensitivity to environmental pollutants. It takes less than 30 min to do the biotest (the other biotests take 48-96 h). Copyright В© 1999 John Wiley & Sons, Ltd.
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gorokhovatsky A.Y., Shaloiko L.A., Bondar V.S., Vysotski E.S., Maximov E.E., von Doehren H..., Alakhov Y.B.
Заглавие : Cell-free bioluminescent screening of translation inhibitors
Колич.характеристики :5 с
Место публикации : Biotechnol. Appl. Biochem.: PORTLAND PRESS, 1998. - Vol. 27. - С. 259-263. - ISSN 0885-4513
Примечания : Cited References: 21
Предметные рубрики: DIPHTHERIA-TOXIN
MESSENGER-RNA
SYSTEM
PROTEINS
Аннотация: The possibility of creating new screening methods with a cell-free translation system has been demonstrated with a quantitative determination of diphtheria toxin and some antibiotics (puromycin, kanamycin and tetracycline) as examples. The approach proposed follows from the ability of various substances to inhibit protein synthesis. We used a wheat-germ cell-free translation system stabilized by freeze-drying in the presence of trehalose with the mRNA of the Ca2+-activated photoprotein obelin as a reporter template. This freeze-dried cell-free translation system allows prolonged storage of the detecting system before it is required, increases the reproducibility of the results and simplifies the application procedure. The obelin mRNA extends the sensitivity of the method owing to the high sensitivity of detection of the synthesized protein.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Remmel N.N., Titova N.M., Kratasyuk V.A.
Заглавие : Oxidative stress monitoring in biological samples by bioluminescent method
Место публикации : Bulletin of Experimental Biology and Medicine. - 2003. - Vol. 136, Is. 2. - P209-211. - ISSN 00074888 (ISSN) , DOI 10.1023/A:1026347830283
Ключевые слова (''Своб.индексиров.''): bioluminescent analysis--lipid peroxidation--malonic dialdehyde--oxidative stress--malonaldehyde--animal tissue--article--bioluminescence--brain tissue--controlled study--fluorescence--freeze drying--kidney parenchyma--lipid peroxidation--liver--male--monitoring--nonhuman--oxidative stress--photobacterium phosphoreum--rat--serum--animals--bacteria--biological assay--lipid peroxidation--luminescent measurements--malondialdehyde--oxidative stress--photobacterium--rats--tissue extracts--animalia--negibacteria--photobacterium--photobacterium phosphoreum
Аннотация: The integral bioluminescent biotest with lyophilized fluorescent bacteria was used for monitoring of LPO processes in tissue extracts and serum of rats exposed to stress. A relationship between the content of MDA (LPO indicator) and fluorescence of bacteria was observed in all biological samples.
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : KRATASYUK V.A., ABAKUMOVA V.V., KIM N.B.
Заглавие : A GEL MODEL FOR THE FUNCTIONING OF LUCIFERASE IN THE CELL
Колич.характеристики :5 с
Место публикации : Biochem.-Moscow: PLENUM PUBL CORP, 1994. - Vol. 59, Is. 7. - P761-765. - ISSN 0006-2979
Примечания : Cited References: 11
Предметные рубрики: BIOLUMINESCENT
Ключевые слова (''Своб.индексиров.''): bioluminescence--luciferase--nadh, fmn-oxidoreductase--immobilization
Аннотация: A gel model for the functioning of luciferase in cells has been constructed using bacterial NADH:FMN-oxidoreductase and luciferase immobilized in starch gel disks. The characteristics of the immobilized luciferase depend on the duration of drying, the amount and concentration of the gel, the nature of the support used for drying, and the properties of the initial enzyme preparation. Functionally important enzyme groups remain intact in the immobilized preparation, and luciferase retains its high specificity with respect to aldehydes. The gel microenvironment appears to be optimal for luciferase, judging from its high activity and increased stability. Conditions allowing repeated use of the preparation have been found. The approach permits co-immobilization of luciferase with other enzymes and their substrates. The error in bioluminescence measurements using the disks is 5-10%. A procedure for stabilization of the immobilized luciferase during repeated use has been devised.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kobzeva T.V., Melnikov A.R., Karogodina T.Y., Zikirin S.B., Stass D.V., Molin Y.N., Rodicheva E.K., Medvedeva S.E., Puzyr A.P., Burov A.A., Bondar V.S., Gitelson J.I.
Заглавие : Stimulation of luminescence of mycelium of luminous fungus Neonothopanus nambi by ionizing radiation
Колич.характеристики :8 с
Коллективы : Program of Siberian Branch of Russian Academy of Sciences [71]; Council for Grants of the President of the Russian Federation for Support of Leading Scientific Schools [NSh 2272.2012.3]; Russian Foundation for Basic Research [12-03-33082]; Program of Government of Russian Federation "On the Efforts for Attracting Leading Researchers to Educational Institutions of Russia" [11.G34.31.0058]
Место публикации : Luminescence: WILEY-BLACKWELL, 2014. - Vol. 29, Is. 7. - С. 703-710. - ISSN 1522-7235, DOI 10.1002/bio.2656. - ISSN 1522-7243
Примечания : Cited References: 29. - The work was supported by the Program of Siberian Branch of Russian Academy of Sciences (project no. 71), Council for Grants of the President of the Russian Federation for Support of Leading Scientific Schools (project no. NSh 2272.2012.3), the Russian Foundation for Basic Research (project no. 12-03-33082), and the Program of Government of Russian Federation "On the Efforts for Attracting Leading Researchers to Educational Institutions of Russia" (grant no. 11.G34.31.0058).
Предметные рубрики: BIOLUMINESCENCE
COMPONENTS
MECHANISMS
SYSTEM
Ключевые слова (''Своб.индексиров.''): higher luminous fungi--neonothopanus nambi--ionizing irradiation--reactive oxygen species--lipid peroxidation
Аннотация: The luminescent system of higher luminous fungi is not fully understood and the enzyme/substrate pair of the light emission reaction has not been isolated. It was suggested that luminescence of fungi involves oxidase-type enzymes, and reactive oxygen species are important for fungal light production. Generation of reactive oxygen species can be stimulated by ionizing irradiation, which has not been studied for luminous fungi. We report the effect of X-irradiation on the luminescence of fungus Neonothopanus nambi. Experiments were performed withmyceliumon a home-built setup based on an X-ray tube and monochromator/photomultiplier tube. Application of X-rays does not change the emission spectrum, but after approximately 20 min of continuous irradiation, light production from unsupported mycelium starts growing and increases up to approximately five times. After peaking, its level decreases irrespective of the presence of X-irradiation. After staying at a certain level, light production collapses to zero, which is not related to the drying of the mycelium or thermal impact of radiation. The observed shape of kinetics is characteristic of a multistage and/or chain reaction. The time profile of light production must reflect the current levels of radicals present in the system and/or the activity of enzyme complexes involved in light production. Copyright (C) 2014 John Wiley & Sons, Ltd.
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lonshakova-Mukina V. I., Esimbekova E. N., Kratasyuk V. A.
Заглавие : Stabilization of Butyrylcholinesterase by the Entrapment into the Natural Polymer-Based Gels
Место публикации : Doklad. Biochem. Biophys.: Pleiades Publishing, 2018. - Vol. 479, Is. 1. - С. 98-100. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672918020126
Аннотация: A new method for obtaining stable butyrylcholinesterase (BuChE) samples based on the enzyme immobilization in starch and gelatin gels followed by drying is proposed. Coimmobilization of BuChE with the thiol group indicator 5,5'-dithiobis(2-nitrobenzoic) acid did not reduce the activity of BuChE, which allowed us to simplify the procedure and reduce the time of analysis of organophosphorus pesticides. The resulting immobilized samples retained activity for at least 300 days. BuChE samples based on the starch gel showed a greater sensitivity in the determination of pesticides as compared to the samples based on the gelatin gel. © 2018, Pleiades Publishing, Ltd.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shershneva, Anna, Murueva, Anastasiya, Nikolaeva, Elena, Shishatskaya, Ekaterina, Volova, Tatiana
Заглавие : Novel spray-dried PHA microparticles for antitumor drug release
Колич.характеристики :12 с
Коллективы : Russian Academy of Sciences [AAAA-A17- 117013050028-8]
Место публикации : Dry. Technol.: TAYLOR & FRANCIS INC, 2018. - Vol. 36, Is. 11. - С. 1387-1398. - ISSN 0737-3937, DOI 10.1080/07373937.2017.1407940. - ISSN 1532-2300(eISSN)
Примечания : Cited References:67. - This work was supported by the state budget allocated to the fundamental research at the Russian Academy of Sciences: [Project no. AAAA-A17- 117013050028-8].
Предметные рубрики: DRYING METHOD
IN-VITRO
BIODEGRADABLE NANOPARTICLES
ORAL
Ключевые слова (''Своб.индексиров.''): 5-fluorouracil--efficiency--microparticles--paclitaxel--polyhydroxyalkanoates--spray-drying
Аннотация: The production of poly-3-hydroxybutyrate (P3HB) and poly-3-hydroxybutyrate/polyethylene glycol (PEG)-based microparticles, loaded with antitumor drugs paclitaxel (PTX) and 5-Fluorouracil (5-FU) by spray-drying technique, was investigated. The average diameter of microparticles was found to be 3.4 +/- 0.5 pm and zeta potential was about -44 mV. The addition of surfactant PEG did not show any effect on the morphological characteristics of the particles. But the chemical structure of drug influenced on the properties. Microparticles had heterogeneous pores on the surface when the hydrophobic PTX was encapsulated. It was established that the addition of surfactant positively influenced on the properties of particles and led to the loading of 5-FU directly into the matrix. This is confirmed by the results of electron microscopy and dynamics of drug release in vitro. As a whole, the release profiles of PTX and 5-FU from composite P3HB/PEG microparticles were less than from P3HB microparticles. The results of the morphological evaluation of Hela cells demonstrated that the use of cytostatic drugs loaded in P3HB microparticles induces morphological changes associated with apoptosis (chromatin condensation, core fragmentation, margination of nucleus). Thus, the obtained results can serve as the basis for the development of new antitumor drugs of prolonged action, intended for various modes of administration.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Murueva A. V., Shershneva A. M., Abanina K. V., Prudnikova S. V., Shishatskaya E. I.
Заглавие : Development and characterization of ceftriaxone-loaded P3HB-based microparticles for drug delivery
Место публикации : Dry. Technol.: Taylor and Francis Inc., 2018. - Article in press. - ISSN 07373937 (ISSN) , DOI 10.1080/07373937.2018.1487451
Ключевые слова (''Своб.индексиров.''): ceftriaxone--drug release--emulsification technique--microbiological evaluation--p3hb-microparticles--spray-drying--drying--emulsification--encapsulation--functional polymers--spray drying--targeted drug delivery--anti-bacterial activity--ceftriaxone--double emulsifications--drug release--encapsulation efficiency--micro-particles--microbiological evaluation--polymeric microparticles--controlled drug delivery
Аннотация: In this study, polymer-based microparticles are used to improve the therapeutic properties of ceftriaxone (CEF) and render them safer. Poly-3-hydroxybutyrate (P3HB) and poly-3-hydroxybutyrate/polyethylene glycol (P3HB-PEG)-based microparticles were prepared by two methods: a double emulsification technique and spray-drying. The microparticles were characterized in terms of size and zeta potential, morphology, total drug loading and drug release. The microparticles had spherical shapes with diameters of a size range from 0.74 to 1.55 µm (emulsification technique) and from 3.84 to 6.51 µm (spray-drying); CEF encapsulation efficiency was around 63% and 49% for these methods respectively. The CEF release from microparticles obtained by spray-drying reached 100% after 150 h, while for microparticles obtained by emulsification technique the total release of CEF did not exceed 34% after 312 h. The release profiles could be best explained by Zero order kinetics model, Higuchi and Korsmeyer-Peppas models, as the plots showed high linearity. Antibacterial activity of the microparticles was evaluated against gram-positive and gram-negative bacterial strains. In general, CEF encapsulation in polymeric microparticles preserves the therapeutic efficacy of the CEF and provides its prolonged effect. © 2018, © 2018 Taylor & Francis.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Esimbekova E. N., Govorun A. E., Lonshakova-Mukina V. I., Kratasyuk V. A.
Заглавие : Gelatin and Starch: What Better Stabilizes the Enzyme Activity?
Место публикации : Dokl. Biol. Sci.: Pleiades Publishing, 2020. - Vol. 491, Is. 1. - С. 43-46. - ISSN 00124966 (ISSN), DOI 10.1134/S0012496620020039
Аннотация: Abstract: The regularities of the functioning of a number of enzymes in a viscous environment created by natural polymers, starch and gelatin are examined. Based on the analysis of kinetic curves of thermal inactivation, mechanisms of thermal inactivation of enzymes in a viscous microenvironment are proposed. Using the example of butyrylcholinesterase, NAD(P)H:FMN oxidoreductase, and coupled system of the luminous bacteria (NAD(P)H:FMN oxidoreductase + luciferase), the conditions, under which starch and gelatin have a stabilizing effect on enzyme activity during storage and exposure to various physical and chemical environmental factors, were found. A significant increase in the stabilizing effect is achieved by eliminating water during drying the enzyme preparations immobilized in starch and gelatin polymer gels. © 2020, Pleiades Publishing, Ltd.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rajakumari R., Volova T., Oluwafemi O. S., Rajesh Kumar S., Thomas S., Kalarikkal N.
Заглавие : Grape seed extract-soluplus dispersion and its antioxidant activity
Место публикации : Drug Dev. Ind. Pharm.: Taylor and Francis Ltd., 2020. - С. 1-11. - Article in press. - ISSN 03639045 (ISSN), DOI 10.1080/03639045.2020.1788059
Аннотация: Objective: The main objective of this work was to formulate a nanodispersion containing grape seed extract and analyzed its release profile, antioxidant potential of the prepared formulations. Methods: The grape seed extract (GSE) containing proanthocyanidins (PC’s) has been dispersed in polymer matrix soluplus (SOLU) by the freeze-drying method. The morphological analysis was carried out using atomic force microscopy (AFM), scanning electron microscopy (SEM) and Transmission electron microscopy (TEM). The in-vitro release of the nanodispersion formulations was evaluated by simulated intestinal fluid (SIF). The antioxidant activity of GSE and the formulation were evaluated by employing various in-vitro assays such as 2, 2’-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) (ABTS), 2, 2-diphenyl-1- picrylhydrazyl (DPPH), Ferric reducing antioxidant power (FRAP) and peroxidation inhibiting activity. Results: The formulation FIII (1:5) resulted in a stable formulation with a higher loading efficiency of 95.36%, a particle size of 69.90 nm, a polydispersity index of 0.154 and a zeta potential value of ?82.10 mV. The antioxidant efficiency of GSE-SOLU evaluated by DPPH was found to be 96.7%. The ABTS and FRAP model exhibited a dose-dependent scavenging activity. Linoleic model of FIII formulation and GSE exhibited a 66.14 and 86.58% inhibition respectively at 200 µg/l. Conclusions: The main reason for excellent scavenging activity of the formulations can be attributed to the presence of monomeric, dimeric, oligomeric procyanidins and the phenolic group. The present work denotes that GSE constitutes a good source of PC’s and will be useful in the prevention and treatment of free radical related diseases. © 2020, © 2020 Informa UK Limited, trading as Taylor & Francis Group.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Joseph, Blessy, Sam, Rubie Mavelil, Balakrishnan, Preetha, Maria, Hanna J., Gopi, Sreeraj, Volova, Tatiana, Fernandes, Susana C. M., Thomas, Sabu
Заглавие : Extraction of Nanochitin from Marine Resources and Fabrication of Polymer Nanocomposites: Recent Advances
Колич.характеристики :37 с
Коллективы : Government of the Russian Federation [074-02-2018-328, 220]; "Investissements d'Avenir" French programFrench National Research Agency (ANR) [ANR-16-IDEX-0002]; Region Nouvelle-AquitaineRegion Nouvelle-Aquitaine; Communaute d'Agglomeration du Pays Basque, France
Место публикации : Polymers: MDPI, 2020. - Vol. 12, Is. 8. - Ст.1664. - ISSN 2073-4360(eISSN), DOI 10.3390/polym12081664
Примечания : Cited References:128. - This study was financially supported by project "Agro preparations of the new generation: a strategy of construction and realization" (agreement number 074-02-2018-328) in accordance with resolution number 220 of the Government of the Russian Federation of 9 April 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning." S.C.M.F. is the recipient of an E2S UPPA Research Partnership Chair (MANTA: Marine Materials) supported by the "Investissements d'Avenir" French program managed by ANR (ANR-16-IDEX-0002), the Region Nouvelle-Aquitaine and the Communaute d'Agglomeration du Pays Basque, France.
Предметные рубрики: NATURAL-RUBBER NANOCOMPOSITES
ELECTROSPUN PVDF MEMBRANE
ALPHA-CHITIN
Аннотация: Industrial sea food residues, mainly crab and shrimp shells, are considered to be the most promising and abundant source of chitin. In-depth understanding of the biological properties of chitin and scientific advancements in the field of nanotechnology have enabled the development of high-performance chitin nanomaterials. Nanoscale chitin is of great economic value as an efficient functional and reinforcement material for a wide range of applications ranging from water purification to tissue engineering. The use of polymers and nanochitin to produce (bio) nanocomposites offers a good opportunity to prepare bioplastic materials with enhanced functional and structural properties. Most processes for nanochitin isolation rely on the use of chemical, physical or mechanical methods. Chitin-based nanocomposites are fabricated by various methods, involving electrospinning, freeze drying, etc. This review discusses the progress and new developments in the isolation and physico-chemical characterization of chitin; it also highlights the processing of nanochitin in various composite and functional materials.
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