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Вид документа : Статья из журнала
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Автор(ы) : Yu M., Benjamin M. M., Srinivasan S., Morin E. E., Shishatskaya E. I., Schwendeman S. P., Schwendeman A.
Заглавие : Battle of GLP-1 delivery technologies
Место публикации : Adv. Drug Deliv. Rev.: Elsevier B.V., 2018. - ISSN 0169409X (ISSN) , DOI 10.1016/j.addr.2018.07.009
Ключевые слова (''Своб.индексиров.''): albumin fusion--exenatide--fatty acid conjugate--fc fusion--glp-1 receptor agonist--half-life--peptide delivery--pharmacokinetics
Аннотация: Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) belong to an important therapeutic class for treatment of type 2 diabetes. Six GLP-1 RAs, each utilizing a unique drug delivery strategy, are now approved by the Food and Drug Administration (FDA) and additional, novel GLP-1 RAs are still under development, making for a crowded marketplace and fierce competition among the manufacturers of these products. As rapid elimination is a major challenge for clinical application of GLP-1 RAs, various half-life extension strategies have been successfully employed including sequential modification, attachment of fatty-acid to peptide, fusion with human serum albumin, fusion with the fragment crystallizable (Fc) region of a monoclonal antibody, sustained drug delivery systems, and PEGylation. In this review, we discuss the scientific rationale of the various half-life extension strategies used for GLP-1 RA development. By analyzing and comparing different approved GLP-1 RAs and those in development, we focus on assessing how half-life extending strategies impact the pharmacokinetics, pharmacodynamics, safety, patient usability and ultimately, the commercial success of GLP-1 RA products. We also anticipate future GLP-1 RA development trends. Since similar drug delivery strategies are also applied for developing other therapeutic peptides, we expect this case study of GLP-1 RAs will provide generalizable concepts for the rational design of therapeutic peptides products with extended duration of action. © 2018 Elsevier B.V.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shishatskaya E., Goreva A., Kalacheva G., Volova T.
Заглавие : Biocompatibility and resorption of intravenously administered polymer microparticles in tissues of internal organs of laboratory animals
Место публикации : Journal of Biomaterials Science, Polymer Edition. - 2011. - Vol. 22, Is. 16. - С. 2185-2203. - ISSN 09205063 (ISSN) , DOI 10.1163/092050610X537138
Ключевые слова (''Своб.индексиров.''): 14c products of polymer resorption--intravenous administration--microparticles--resorbable polyhydroxybutyrate--tissues of internal organs--3-hydroxybutyric acid--sup14/supc products of polymer resorption--adverse effect--drug-delivery systems--growth and development--high molecular weight--initial molecular weight--initial values--internal organs--intravenous administration--laboratory animals--local response--matrix--mean diameter--micro-particles--polymer degradation--polymer microparticles--preparation process--radioactivity level--residual content--resorbable--sustained-release--tail veins--wistar rat--animals--biocompatibility--degradation--histology--molecular weight--morphology--radiation--radioactivity--rats--tissue--poly(3 hydroxybutyric acid)--animal experiment--animal tissue--article--biocompatibility--concentration process--controlled study--degradation--drug delivery system--female--gel permeation chromatography--heart--kidney parenchyma--liver--lung parenchyma--molecular weight--nonhuman--organ culture--priority journal--radioactivity--rat--spleen--animals--animals, laboratory--biocompatible materials--drug delivery systems--female--infusions, intravenous--materials testing--microspheres--molecular weight--particle size--polymers--rats--rats, wistar--tissue distribution--animalia--rattus--rattus norvegicus
Аннотация: Specimens of 14C-labeled polymer of 3-hydroxybutyric acid, P(3-HB), with different initial molecular weights, were used to prepare microparticles, whose morphology was not influenced by the M w of the polymer. During the particle preparation process, P(3-HB) molecular weight decreased by 15-20%. Sterile microparticles (mean diameter 2.4 ?m) were injected into the tail veins of Wistar rats (5 mg/rat). The effects of the particles administered to rats were studied based on the general response of animals and local response of internal organ tissues and blood morphology; no adverse effects on growth and development of the animals or unfavorable changes in the structure of the tissues of internal organs were observed. Measurements of radioactivity in tissues showed that 14C concentrations are different in different organs, changing during the course of the experiment. The main targets for 14C-labeled microparticles were tissues of the liver, spleen, and kidneys. Comparison of radioactivity levels and residual contents of high-molecular-weight matrix in tissues suggested that the most rapid metabolism and degradation of P(3-HB) occurred in the liver and spleen. Gel-permeation chromatography showed that at 3 h after the microparticles were injected into the bloodstream, polymer degradation started in all examined organs, except the lungs; at 12 weeks, the M w of the polymer matrix was as low as 20-30% of its initial value. The presence of high-molecular-weight (undegraded) polymer in the tissues at 12 weeks after administration of the particles suggests that P(3-HB) is degraded in tissues of internal organs slowly and, hence, P(3-HB)-based microparticles can be used as sustained-release drug-delivery systems. В© 2011 VSP.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Inzhevatkin, E., V, Baron, A., V, Volkova M. B., Maksimov N. G., Golubenko N. K., Loshkareva, M., V, Puzyr' A. P., Ronzhin N. O., Bondar V. S.
Заглавие : Biodistribution of Detonation Synthesis Nanodiamonds in Mice after Intravenous Administration and Some Biochemical Changes in Blood Plasma
Колич.характеристики :4 с
Место публикации : Bull. Exp. Biol. Med.: SPRINGER, 2021. - Vol. 172, Is. 1. - С. 77-80. - ISSN 0007-4888, DOI 10.1007/s10517-021-05335-9. - ISSN 1573-8221(eISSN)
Примечания : Cited References:9
Аннотация: Biodistribution of nanodiamonds in mice after intravenous administration, activities of AST and ALT, and the level of bilirubin in the blood plasma were studied in 2.5 h and 10, 35, and 97 days after injection of nanodiamonds. In 2.5 h after intravenous injection, nanodiamonds mainly accumulate in the lungs and liver. Then, redistribution of nanodiamonds from all organs to the liver was observed. Activities of AST and ALT and the level of bilirubin in the blood increased after 2.5 h and then decreased to the initial values.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Inzhevatkin E. V., Baron A. V., Volkova M. B., Maksimov N. G., Golubenko N. K., Loshkareva M. V., Puzyr’ A. P., Ronzhin N. O., Bondar V. S.
Заглавие : Biodistribution of Detonation Synthesis Nanodiamonds in Mice after Intravenous Administration and Some Biochemical Changes in Blood Plasma
Место публикации : Bull. Exp. Biol. Med.: Springer, 2021. - Article in press. - ISSN 00074888 (ISSN), DOI 10.1007/s10517-021-05335-9
Аннотация: Biodistribution of nanodiamonds in mice after intravenous administration, activities of AST and ALT, and the level of bilirubin in the blood plasma were studied in 2.5 h and 10, 35, and 97 days after injection of nanodiamonds. In 2.5 h after intravenous injection, nanodiamonds mainly accumulate in the lungs and liver. Then, redistribution of nanodiamonds from all organs to the liver was observed. Activities of AST and ALT and the level of bilirubin in the blood increased after 2.5 h and then decreased to the initial values. © 2021, Springer Science+Business Media, LLC, part of Springer Nature.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pilla, Rachel M., Williamson, Craig E., Adamovich, Boris V., Adrian, Rita, Anneville, Orlane, Chandra, Sudeep, Colom-Montero, William, Devlin, Shawn P., Dix, Margaret A., Dokulil, Martin T., Gaiser, Evelyn E., Girdner, Scott F., Hambright, K. David, Hamilton, David P., Havens, Karl, Hessen, Dag O., Higgins, Scott N., Huttula, Timo H., Huuskonen, Hannu, Isles, Peter D. F., Joehnk, Klaus D., Jones, Ian D., Keller, Wendel Bill, Knoll, Lesley B., Korhonen, Johanna, Kraemer, Benjamin M., Leavitt, Peter R., Lepori, Fabio, Luger, Martin S., Maberly, Stephen C., Melack, John M., Melles, Stephanie J., Muller-Navarra D. C., Pierson, Don C., Pislegina, Helen V., Plisnier, Pierre-Denis, Richardson, David C., Rimmer, Alon, Rogora, Michela, Rusak, James A., Sadro, Steven, Salmaso, Nico, Saros, Jasmine E., Saulnier-Talbot, Emilie, Schindler, Daniel E., Schmid, Martin, Shimaraeva, Svetlana V., Silow, Eugene A., Sitoki, Lewis M., Sommaruga, Ruben, Straile, Dietmar, Strock, Kristin E., Thiery, Wim, Timofeyev, Maxim A., Verburg, Piet, Vinebrooke, Rolf D., Weyhenmeyer, Gesa A., Zadereev, Egor
Заглавие : Deeper waters are changing less consistently than surface waters in a global analysis of 102 lakes
Колич.характеристики :15 с
Коллективы : Belarus Republican Foundation for Fundamental Research; IGB Long-Term Research; European CommissionEuropean CommissionEuropean Commission Joint Research Centre; DFGGerman Research Foundation (DFG) [AD 91/22-1]; OLA-IS; AnaEE-France; INRAE of Thonon-les-Bains; CIPEL; SILA; CISALB; Universidad del Valle de Guatemala; Archbold Biological Station; Oklahoma Department of Wildlife Conservation; Oklahoma Water Resources Board; Grand River Dam Authority; US Army Corps of EngineersUnited States Department of Defense; City of Tulsa; Ministry of Business, Innovation, and EmploymentNew Zealand Ministry of Business, Innovation and Employment (MBIE) [UOW X1503]; Natural Environment Research Council of the UKNERC Natural Environment Research Council; IGB's International Postdoctoral Fellowship; NSERCNatural Sciences and Engineering Research Council of Canada; Canada Foundation for InnovationCanada Foundation for InnovationCGIAR; Canada Research ChairsCanada Research ChairsCGIAR; Province of Saskatchewan; University of Regina; Queen's University Belfast; Natural Environment Research CouncilNERC Natural Environment Research Council; US-NSFNational Science Foundation (NSF); California Air Resources Board; NASANational Aeronautics & Space Administration (NASA); US National Park Service; Ministry of Higher Education and ResearchMinistry of Higher Education & Scientific Research (MHESR) [FZZE-2020-0026, FZZE-2020-0023]; RSCFRussian Science Foundation (RSF) [20-64-46003]; US National Science Foundation Long Term Research in Environmental Biology program [DEB-1242626]; Environmental Agency of Verona; US National Science FoundationNational Science Foundation (NSF); Gordon and Betty Moore FoundationGordon and Betty Moore Foundation; Mellon Foundation; University of WashingtonUniversity of Washington; KMFRI; LVEMP; University of Innsbruck; OeAD; IFSInternational Foundation for Science; LVFO-EU; Waikato Regional Council; Bay of Plenty Regional Council; Swedish Environmental Protection Agency; Swedish Infrastructure for Ecosystem Sciences; US National Science FoundationNational Science Foundation (NSF) [DEB-1754276, DEB-1950170]
Место публикации : Sci Rep: NATURE RESEARCH, 2020. - Vol. 10, Is. 1. - Ст.20514. - ISSN 2045-2322, DOI 10.1038/s41598-020-76873-x
Примечания : Cited References:87. - This work was conceived at the Global Lake Ecological Observatory Network (GLEON), and benefited from continued participation and travel support from GLEON. This manuscript is dedicated to the late Alon Rimmer and Karl Havens, who provided data and contributed to earlier versions of this manuscript. Funding in support of this work came from the following sources: Belarus Republican Foundation for Fundamental Research; IGB Long-Term Research; the European Commission within the MANTEL project; the DFG within the LimnoScenES project (AD 91/22-1); OLA-IS, AnaEE-France, INRAE of Thonon-les-Bains, CIPEL, SILA, CISALB; Universidad del Valle de Guatemala; Archbold Biological Station; the Oklahoma Department of Wildlife Conservation, the Oklahoma Water Resources Board, the Grand River Dam Authority, the US Army Corps of Engineers, and the City of Tulsa; the Ministry of Business, Innovation, and Employment (UOW X1503); the Natural Environment Research Council of the UK; the IGB's International Postdoctoral Fellowship; NSERC, Canada Foundation for Innovation, Canada Research Chairs, Province of Saskatchewan; University of Regina; Queen's University Belfast; Natural Environment Research Council; US-NSF, California Air Resources Board, NASA, and US National Park Service; the Ministry of Higher Education and Research (projects No FZZE-2020-0026; No FZZE-2020-0023) and RSCF 20-64-46003; US National Science Foundation Long Term Research in Environmental Biology program (DEB-1242626); the Environmental Agency of Verona; US National Science Foundation, the Gordon and Betty Moore Foundation, the Mellon Foundation, and the University of Washington; KMFRI, LVEMP, University of Innsbruck, OeAD, IFS, and LVFO-EU; Waikato Regional Council and Bay of Plenty Regional Council; Swedish Environmental Protection Agency and the Swedish Infrastructure for Ecosystem Sciences; US National Science Foundation grants DEB-1754276 and DEB-1950170. We thank J. Klug, P. McIntyre, H. Swain, K. Tominaga, A. Voutilainen, and L. Winslow for their feedback on early drafts that substantially improved this manuscript. Additional detailed acknowledgements can be found in the Supplementary Information online.
Предметные рубрики: DISSOLVED ORGANIC-CARBON
LONG-TERM CHANGES
CLIMATE-CHANGE
OXYGEN
Аннотация: Globally, lake surface water temperatures have warmed rapidly relative to air temperatures, but changes in deepwater temperatures and vertical thermal structure are still largely unknown. We have compiled the most comprehensive data set to date of long-term (1970-2009) summertime vertical temperature profiles in lakes across the world to examine trends and drivers of whole-lake vertical thermal structure. We found significant increases in surface water temperatures across lakes at an average rate of+0.37 degrees C decade(-1), comparable to changes reported previously for other lakes, and similarly consistent trends of increasing water column stability (+0.08 kg m(-3) decade(-1)). In contrast, however, deepwater temperature trends showed little change on average (+0.06 degrees C decade(-1)), but had high variability across lakes, with trends in individual lakes ranging from -0.68 degrees C decade(-1) to+0.65 degrees C decade(-1). The variability in deepwater temperature trends was not explained by trends in either surface water temperatures or thermal stability within lakes, and only 8.4% was explained by lake thermal region or local lake characteristics in a random forest analysis. These findings suggest that external drivers beyond our tested lake characteristics are important in explaining long-term trends in thermal structure, such as local to regional climate patterns or additional external anthropogenic influences.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mogilnaya O.A., Puzyr A.P., Baron A.V., Bondar V.S.
Заглавие : Hematological Parameters and the State of Liver Cells of Rats After Oral Administration of Aflatoxin B1 Alone and Together with Nanodiamonds
Колич.характеристики :5 с
Коллективы :
Место публикации : Nanoscale Res. Lett.: SPRINGER, 2010. - Vol. 5, Is. 5. - С. 908-912. - ISSN 1931-7573, DOI 10.1007/s11671-010-9571-8
Примечания : Cited References: 23. - The study was financially supported by the Russian Foundation for Basic Research (RFBR) (Grant No. 06-0490234) and the RAS Presidium (Program No. 27, Project No. 64).
Предметные рубрики: B-1
MYCOTOXINS
ADSORPTION
Ключевые слова (''Своб.индексиров.''): nanodiamonds--aflatoxin b(1)--detoxification--adsorbent
Аннотация: Hematological parameters and the state of liver cells of rats were examined in vivo after the animals received aflatoxin B(1) (AfB(1)) alone and together with modified nanodiamonds (MND) synthesized by detonation. The rats that had received the MND hydrosol had elevated leukocyte levels, mainly due to higher granulocyte counts and somewhat increased monocyte counts compared to control rats. Hematological parameters of the rats that had received AfB(1) alone differed from those of the control rats in another way: total white blood cell counts were significantly lower due to the decreased lymphocyte counts. In rats that had consumed AfB(1) with the MND hydrosol, changes in hematological parameters were less pronounced than in rats that had consumed either AfB(1) or MND. Electron microscopy showed that hepatocytes of the rats that had received the MND hydrosol or AfB(1) with the MND hydrosol contained elevated levels of lipid inclusions and lysosomes. Hyperplasia of the smooth endoplasmic reticulum (EPR) was revealed in liver specimens of the rats that had received AfB(1). Results of the study suggest the conclusion about mutual mitigation of the effects of nanoparticles and the mycotoxin on rats blood and liver cells after AfB(1) has adsorbed on MND.
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Вид документа : Статья из журнала
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Автор(ы) : Shishatskaya E.I.
Заглавие : Microencapculation of daunorubicin with biodegradable polymer matrix
Место публикации : Antibiotiki i Khimioterapiya. - 2007. - Vol. 52, Is. 9-10. - С. 3-8. - ISSN 02352990 (ISSN)
Ключевые слова (''Своб.индексиров.''): daunorubicin--microencapsulation--polymer matrix--antineoplastic antibiotic--daunorubicin--polyester--animal--article--bagg albino mouse--chemistry--kinetics--microcapsule--mouse--particle size--animals--antibiotics, antineoplastic--capsules--daunorubicin--kinetics--mice--mice, inbred balb c--particle size--polyesters--animalia
Аннотация: Procedure for microencapsulation providing stable formation of high quality microspheres was designed. Conditions for deposition of the anthracycline antibiotic daunorubicin to polymer matrix were developed and microsheres loaded with various quantities of the drug were prepared. The kinetics of the in vitro and in vivo release of daunorubicin from the microsheres was studied. The rate of the rubomycin release to the medium in vitro (balanced phosphate buffer at 37.8В°C) in a 300-hour experiment directly depended on the quantity of the incorporated drug and averaged 0.81 В· 10 -4 to 2.3 В· 10 -4 mcg/mlВ·h. The experiment on laboratory animals with intraperitoneal administration of the rubomycin microsperes showed that the drug remained in the blood and abdominal liquid for a long time (up to 10 days). Possible control of the quantity of the rubomycin encapsulation to the polymer matrix, no sharp efflux of the drug at the early stages of the observation and low rate of the drug release to the medium allowed to conclude that the use of the biodegradable polymer microsperes as carriers of the high toxic antibiotic providing its prolonged action was prospective.
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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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