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  1. Article ; Online: Finely tuned Prussian blue-based nanoparticles and their application in disease treatment.

    Gao, Yong / Yu, Guocan / Xing, Kuoran / Gorin, Dmitry / Kotelevtsev, Yuri / Tong, Weijun / Mao, Zhengwei

    Journal of materials chemistry. B

    2020  Volume 8, Issue 32, Page(s) 7121–7134

    Abstract: The Prussian blue (PB) based nanostructure is a mixed-valence coordination network with excellent biosafety, remarkable photothermal effect and multiple enzyme-mimicking behaviours. Compared with other nanomaterials, PB-based nanoparticles (NPs) exhibit ... ...

    Abstract The Prussian blue (PB) based nanostructure is a mixed-valence coordination network with excellent biosafety, remarkable photothermal effect and multiple enzyme-mimicking behaviours. Compared with other nanomaterials, PB-based nanoparticles (NPs) exhibit several unparalleled advantages in biomedical applications. This review begins with the chemical composition and physicochemical properties of PB-based NPs. The tuning strategies of PB-based NPs and their biomedical properties are systemically demonstrated. Afterwards, the biomedical applications of PB-based NPs are comprehensively recounted, mainly focusing on treatment of tumors, bacterial infection and inflammatory diseases. Finally, the challenges and future prospects of PB-based NPs and their application in disease treatment are discussed.
    MeSH term(s) Animals ; Anti-Bacterial Agents/chemistry ; Anti-Bacterial Agents/pharmacology ; Anti-Inflammatory Agents/chemistry ; Anti-Inflammatory Agents/pharmacology ; Antineoplastic Agents/chemistry ; Antineoplastic Agents/pharmacology ; Biocompatible Materials/chemistry ; Biocompatible Materials/pharmacology ; Ferrocyanides/chemistry ; Ferrocyanides/pharmacology ; Humans ; Magnetic Resonance Imaging ; Metal Nanoparticles/chemistry ; Multimodal Imaging ; Nanocomposites/chemistry ; Optical Imaging ; Phototherapy ; Polylysine/chemistry ; Polyvinyls/chemistry ; Porosity ; Pyrrolidines/chemistry ; Theranostic Nanomedicine
    Chemical Substances Anti-Bacterial Agents ; Anti-Inflammatory Agents ; Antineoplastic Agents ; Biocompatible Materials ; Ferrocyanides ; Polyvinyls ; Pyrrolidines ; poly(N-vinylpyrrolidine) ; Polylysine (25104-18-1) ; ferric ferrocyanide (TLE294X33A)
    Language English
    Publishing date 2020-07-10
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2702241-9
    ISSN 2050-7518 ; 2050-750X
    ISSN (online) 2050-7518
    ISSN 2050-750X
    DOI 10.1039/d0tb01248c
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: 4-Methylumbelliferone Targets Revealed by Public Data Analysis and Liver Transcriptome Sequencing.

    Tsitrina, Alexandra A / Halimani, Noreen / Andreichenko, Irina N / Sabirov, Marat / Nesterchuk, Mikhail / Dashenkova, Nataliya O / Romanov, Roman / Bulgakova, Elena V / Mikaelyan, Arsen / Kotelevtsev, Yuri

    International journal of molecular sciences

    2023  Volume 24, Issue 3

    Abstract: 4-methylumbelliferone (4MU) is a well-known hyaluronic acid synthesis inhibitor and an approved drug for the treatment of cholestasis. In animal models, 4MU decreases inflammation, reduces fibrosis, and lowers body weight, serum cholesterol, and insulin ... ...

    Abstract 4-methylumbelliferone (4MU) is a well-known hyaluronic acid synthesis inhibitor and an approved drug for the treatment of cholestasis. In animal models, 4MU decreases inflammation, reduces fibrosis, and lowers body weight, serum cholesterol, and insulin resistance. It also inhibits tumor progression and metastasis. The broad spectrum of effects suggests multiple and yet unknown targets of 4MU. Aiming at 4MU target deconvolution, we have analyzed publicly available data bases, including: 1. Small molecule library Bio Assay screening (PubChemBioAssay); 2. GO pathway databases screening; 3. Protein Atlas Database. We also performed comparative liver transcriptome analysis of mice on normal diet and mice fed with 4MU for two weeks. Potential targets of 4MU public data base analysis fall into two big groups, enzymes and transcription factors (TFs), including 13 members of the nuclear receptor superfamily regulating lipid and carbohydrate metabolism. Transcriptome analysis revealed changes in the expression of genes involved in bile acid metabolism, gluconeogenesis, and immune response. It was found that 4MU feeding decreased the accumulation of the glycogen granules in the liver. Thus, 4MU has multiple targets and can regulate cell metabolism by modulating signaling via nuclear receptors.
    MeSH term(s) Mice ; Animals ; Hymecromone/pharmacology ; Transcriptome ; Liver/metabolism ; Inflammation/metabolism ; Signal Transduction ; Lipid Metabolism
    Chemical Substances Hymecromone (3T5NG4Q468)
    Language English
    Publishing date 2023-01-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms24032129
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Steroid signaling: ligand-binding promiscuity, molecular symmetry, and the need for gating.

    Lathe, Richard / Kotelevtsev, Yuri

    Steroids

    2014  Volume 82, Page(s) 14–22

    Abstract: Steroid/sterol-binding receptors and enzymes are remarkably promiscuous in the range of ligands they can bind to and, in the case of enzymes, modify - raising the question of how specific receptor activation is achieved in vivo. Estrogen receptors (ER) ... ...

    Abstract Steroid/sterol-binding receptors and enzymes are remarkably promiscuous in the range of ligands they can bind to and, in the case of enzymes, modify - raising the question of how specific receptor activation is achieved in vivo. Estrogen receptors (ER) are modulated by 27-hydroxycholesterol and 5α-androstane-3β,17β-diol (Adiol), in addition to estradiol (E2), and respond to diverse small molecules such as bisphenol A. Steroid-modifying enzymes are also highly promiscuous in ligand binding and metabolism. The specificity problem is compounded by the fact that the steroid core (hydrogenated cyclopentophenanthrene ring system) has several planes of symmetry. Ligand binding can be in symmetrical East-West (rotation) and North-South (inversion) orientations. Hydroxysteroid dehydrogenases (HSDs) can modify symmetrical 7 and 11, also 3 and 17/20, positions, exemplified here by yeast 3α,20β-HSD and mammalian 11β-HSD and 17β-HSD enzymes. Faced with promiscuity and symmetry, other strategies are clearly necessary to promote signaling selectivity in vivo. Gating regulates hormone access via enzymes that preferentially inactivate (or activate) a subclass of ligands, thereby governing which ligands gain receptor access - exemplified by 11β-HSD gating cortisol access to the mineralocorticoid receptor, and P450 CYP7B1 gating Adiol access to ER. Counter-intuitively, the specificity of steroid/sterol action is achieved not by intrinsic binding selectivity but by the combination of local metabolism and binding affinity.
    MeSH term(s) Binding Sites ; Ligands ; Peptides/chemistry ; Peptides/metabolism ; Proteins/chemistry ; Proteins/metabolism ; Signal Transduction ; Steroids/chemistry ; Steroids/metabolism
    Chemical Substances Ligands ; Peptides ; Proteins ; Steroids
    Language English
    Publishing date 2014-04
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 80312-1
    ISSN 1878-5867 ; 0039-128X
    ISSN (online) 1878-5867
    ISSN 0039-128X
    DOI 10.1016/j.steroids.2014.01.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Endothelin signalling mediates experience-dependent myelination in the CNS.

    Swire, Matthew / Kotelevtsev, Yuri / Webb, David J / Lyons, David A / Ffrench-Constant, Charles

    eLife

    2019  Volume 8

    Abstract: Experience and changes in neuronal activity can alter CNS myelination, but the signalling pathways responsible remain poorly understood. Here we define a pathway in which endothelin, signalling through the G protein-coupled receptor endothelin receptor B ...

    Abstract Experience and changes in neuronal activity can alter CNS myelination, but the signalling pathways responsible remain poorly understood. Here we define a pathway in which endothelin, signalling through the G protein-coupled receptor endothelin receptor B and PKC epsilon, regulates the number of myelin sheaths formed by individual oligodendrocytes in mouse and zebrafish. We show that this phenotype is also observed in the prefrontal cortex of mice following social isolation, and is associated with reduced expression of vascular endothelin. Additionally, we show that increasing endothelin signalling rescues this myelination defect caused by social isolation. Together, these results indicate that the vasculature responds to changes in neuronal activity associated with experience by regulating endothelin levels, which in turn affect the myelinating capacity of oligodendrocytes. This pathway may be employed to couple the metabolic support function of myelin to activity-dependent demand and also represents a novel mechanism for adaptive myelination.
    MeSH term(s) Animals ; Endothelins/metabolism ; Mice ; Myelin Sheath/metabolism ; Oligodendroglia/metabolism ; Prefrontal Cortex/physiology ; Protein Kinase C-epsilon/metabolism ; Receptor, Endothelin B/metabolism ; Signal Transduction ; Zebrafish
    Chemical Substances EDNRB protein, mouse ; Endothelins ; Receptor, Endothelin B ; Protein Kinase C-epsilon (EC 2.7.11.13)
    Language English
    Publishing date 2019-10-28
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2687154-3
    ISSN 2050-084X ; 2050-084X
    ISSN (online) 2050-084X
    ISSN 2050-084X
    DOI 10.7554/eLife.49493
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Steroid promiscuity: Diversity of enzyme action. Preface.

    Lathe, Richard / Kotelevtsev, Yuri / Mason, J Ian

    The Journal of steroid biochemistry and molecular biology

    2015  Volume 151, Page(s) 1–2

    Abstract: This Special Issue on the topic of Steroid and Sterol Signaling: Promiscuity and Diversity, dwells on the growing realization that the 'one ligand, one binding site' and 'one enzyme, one reaction' concepts are out of date. Focusing on cytochromes P450 ( ... ...

    Abstract This Special Issue on the topic of Steroid and Sterol Signaling: Promiscuity and Diversity, dwells on the growing realization that the 'one ligand, one binding site' and 'one enzyme, one reaction' concepts are out of date. Focusing on cytochromes P450 (CYP), hydroxysteroid dehydrogenases (HSDs), and related enzymes, the Special Issue highlights that a single enzyme can bind to diverse substrates, and in different conformations, and can catalyze multiple different conversions (and in different directions), thereby, generating an unexpectedly wide spectrum of ligands that can have subtly different biological actions. This article is part of a Special Issue entitled 'Steroid/Sterol Signaling' .
    MeSH term(s) Cytochrome P-450 Enzyme System/metabolism ; Hydroxysteroid Dehydrogenases/metabolism ; Ligands ; Steroids/metabolism ; Sterol O-Acyltransferase/metabolism
    Chemical Substances Ligands ; Steroids ; Cytochrome P-450 Enzyme System (9035-51-2) ; Hydroxysteroid Dehydrogenases (EC 1.1.-) ; Sterol O-Acyltransferase (EC 2.3.1.26)
    Language English
    Publishing date 2015-07
    Publishing country England
    Document type Introductory Journal Article
    ZDB-ID 1049188-0
    ISSN 1879-1220 ; 0960-0760
    ISSN (online) 1879-1220
    ISSN 0960-0760
    DOI 10.1016/j.jsbmb.2015.01.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Hypotensive effect of bi-potassium salt of 1-hexadecyl-2-methylcarbamoylphosphatidic acid in rats with renovascular hypertension

    N. Y. Khromova / S. I. Malekin / S. A. Gavrilova / S. V. Kotelevtsev / Yu. V. Kotelevtsev

    Бюллетень сибирской медицины, Vol 17, Iss 4, Pp 163-

    2018  Volume 170

    Abstract: The study describes the synthesis and hypotensive effects of stable platelet activation factor (PAF) precursor 1-hexadecyl-2-m ethylcarbamoyl-phosphatidic acid (HMCP) оn outbred Wistar rats with 1-kidney 1-clip (1K1C) renovascular hypertension. ... ...

    Abstract The study describes the synthesis and hypotensive effects of stable platelet activation factor (PAF) precursor 1-hexadecyl-2-m ethylcarbamoyl-phosphatidic acid (HMCP) оn outbred Wistar rats with 1-kidney 1-clip (1K1C) renovascular hypertension. Intravenous injection of 0.1, 0.5, 1 and 5 mg/kg HMCP resulted in a sharp decline of up to 50% of MAP with subsequent restoration to initial level. In some hypertensive 1K1C rats HMCP has a prolonged effect with blood pressure stabilized at 75% of initial level after 30 min post injection. HMCP was toxic at higher doses with a LD50 around 3 mg/kg.
    Keywords артериальное давление ; антигипертензивный препарат ; фактор активации тромбоцитов ; Medicine ; R
    Language English
    Publishing date 2018-12-01T00:00:00Z
    Publisher Siberian State Medical University (Tomsk)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Atherosclerosis and Alzheimer--diseases with a common cause? Inflammation, oxysterols, vasculature.

    Lathe, Richard / Sapronova, Alexandra / Kotelevtsev, Yuri

    BMC geriatrics

    2014  Volume 14, Page(s) 36

    Abstract: Background: Aging is accompanied by increasing vulnerability to pathologies such as atherosclerosis (ATH) and Alzheimer disease (AD). Are these different pathologies, or different presentations with a similar underlying pathoetiology?: Discussion: ... ...

    Abstract Background: Aging is accompanied by increasing vulnerability to pathologies such as atherosclerosis (ATH) and Alzheimer disease (AD). Are these different pathologies, or different presentations with a similar underlying pathoetiology?
    Discussion: Both ATH and AD involve inflammation, macrophage infiltration, and occlusion of the vasculature. Allelic variants in common genes including APOE predispose to both diseases. In both there is strong evidence of disease association with viral and bacterial pathogens including herpes simplex and Chlamydophila. Furthermore, ablation of components of the immune system (or of bone marrow-derived macrophages alone) in animal models restricts disease development in both cases, arguing that both are accentuated by inflammatory/immune pathways. We discuss that amyloid β, a distinguishing feature of AD, also plays a key role in ATH. Several drugs, at least in mouse models, are effective in preventing the development of both ATH and AD. Given similar age-dependence, genetic underpinnings, involvement of the vasculature, association with infection, Aβ involvement, the central role of macrophages, and drug overlap, we conclude that the two conditions reflect different manifestations of a common pathoetiology.
    Mechanism: Infection and inflammation selectively induce the expression of cholesterol 25-hydroxylase (CH25H). Acutely, the production of 'immunosterol' 25-hydroxycholesterol (25OHC) defends against enveloped viruses. We present evidence that chronic macrophage CH25H upregulation leads to catalyzed esterification of sterols via 25OHC-driven allosteric activation of ACAT (acyl-CoA cholesterol acyltransferase/SOAT), intracellular accumulation of cholesteryl esters and lipid droplets, vascular occlusion, and overt disease.
    Summary: We postulate that AD and ATH are both caused by chronic immunologic challenge that induces CH25H expression and protection against particular infectious agents, but at the expense of longer-term pathology.
    MeSH term(s) Aging/metabolism ; Aging/pathology ; Alzheimer Disease/blood ; Alzheimer Disease/etiology ; Alzheimer Disease/pathology ; Amyloid beta-Peptides/blood ; Animals ; Atherosclerosis/blood ; Atherosclerosis/etiology ; Atherosclerosis/pathology ; Brain/blood supply ; Brain/metabolism ; Brain/pathology ; Humans ; Hydroxycholesterols/blood ; Inflammation/blood ; Inflammation/complications ; Inflammation/pathology ; Inflammation Mediators/blood
    Chemical Substances Amyloid beta-Peptides ; Hydroxycholesterols ; Inflammation Mediators ; 25-hydroxycholesterol (767JTD2N31)
    Language English
    Publishing date 2014-03-21
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2059865-8
    ISSN 1471-2318 ; 1471-2318
    ISSN (online) 1471-2318
    ISSN 1471-2318
    DOI 10.1186/1471-2318-14-36
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Inhibition of hyaluronan secretion by novel coumarin compounds and chitin synthesis inhibitors.

    Tsitrina, Alexandra A / Krasylov, Igor V / Maltsev, Dmitry I / Andreichenko, Irina N / Moskvina, Viktoria S / Ivankov, Dmitry N / Bulgakova, Elena V / Nesterchuk, Mikhail / Shashkovskaya, Vera / Dashenkova, Nataliya O / Khilya, Vladimir P / Mikaelyan, Arsen / Kotelevtsev, Yuri

    Glycobiology

    2021  Volume 31, Issue 8, Page(s) 959–974

    Abstract: Elevated plasma levels of hyaluronic acid (HA) is a disease marker in liver pathology and other inflammatory disorders. Inhibition of HA synthesis with coumarin 4-methylumbelliferone (4MU) has a beneficial effect in animal models of fibrosis, ... ...

    Abstract Elevated plasma levels of hyaluronic acid (HA) is a disease marker in liver pathology and other inflammatory disorders. Inhibition of HA synthesis with coumarin 4-methylumbelliferone (4MU) has a beneficial effect in animal models of fibrosis, inflammation, cancer and metabolic syndrome. 4MU is an active compound of approved choleretic drug hymecromone with low bioavailability and a broad spectrum of action. New, more specific and efficient inhibitors of hyaluronan synthases (HAS) are required. We have tested several newly synthesized coumarin compounds and commercial chitin synthesis inhibitors to inhibit HA production in cell culture assay. Coumarin derivative compound VII (10'-methyl-6'-phenyl-3'H-spiro[piperidine-4,2'-pyrano[3,2-g]chromene]-4',8'-dione) demonstrated inhibition of HA secretion by NIH3T3 cells with the half-maximal inhibitory concentration (IC50) = 1.69 ± 0.75 μΜ superior to 4MU (IC50 = 8.68 ± 1.6 μΜ). Inhibitors of chitin synthesis, etoxazole, buprofezin, triflumuron, reduced HA deposition with IC50 of 4.21 ± 3.82 μΜ, 1.24 ± 0.87 μΜ and 1.48 ± 1.44 μΜ, respectively. Etoxazole reduced HA production and prevented collagen fibre formation in the CCl4 liver fibrosis model in mice similar to 4MU. Bioinformatics analysis revealed homology between chitin synthases and HAS enzymes, particularly in the pore-forming domain, containing the proposed site for etoxazole binding.
    MeSH term(s) Animals ; Chitin ; Hyaluronan Synthases/metabolism ; Hyaluronic Acid/metabolism ; Hymecromone/pharmacology ; Mice ; NIH 3T3 Cells
    Chemical Substances Chitin (1398-61-4) ; Hymecromone (3T5NG4Q468) ; Hyaluronic Acid (9004-61-9) ; Hyaluronan Synthases (EC 2.4.1.212)
    Language English
    Publishing date 2021-05-27
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1067689-2
    ISSN 1460-2423 ; 0959-6658
    ISSN (online) 1460-2423
    ISSN 0959-6658
    DOI 10.1093/glycob/cwab038
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: lncRNA in the liver: Prospects for fundamental research and therapy by RNA interference.

    Smekalova, Elena M / Kotelevtsev, Yuri V / Leboeuf, Dominique / Shcherbinina, Evgeniya Y / Fefilova, Anna S / Zatsepin, Timofei S / Koteliansky, Victor

    Biochimie

    2016  Volume 131, Page(s) 159–172

    Abstract: Long non-coding RNAs constitute the most abundant part of the transcribed mammalian genome. lncRNAs affect all essential processes in the living cell including transcription, splicing, translation, replication, shaping of chromatin and post translational ...

    Abstract Long non-coding RNAs constitute the most abundant part of the transcribed mammalian genome. lncRNAs affect all essential processes in the living cell including transcription, splicing, translation, replication, shaping of chromatin and post translational modification of proteins. Alterations in lncRNA expression have been linked to a number of diseases; thus, modulation of lncRNA expression holds a huge potential for gene-based therapy. In this review we summarize published data about lncRNAs in the context of hepatic carcinogenesis and liver fibrosis, and the corresponding potential targets for gene therapy. Recent advancements in targeted delivery to the liver made RNA interference an invaluable tool to decipher hepatic lncRNA function and to develop lncRNA-oriented therapies for liver-involved diseases in the future. Different approaches for RNA delivery that can be used for functional studies in the lab and for clinical lncRNA based applications are critically discussed in this review.
    MeSH term(s) Animals ; Biomedical Research/methods ; Gene Expression Regulation ; Genetic Therapy/methods ; Humans ; Liver/metabolism ; Liver/pathology ; Liver Cirrhosis/genetics ; Liver Cirrhosis/therapy ; Liver Neoplasms/genetics ; Liver Neoplasms/therapy ; RNA Interference ; RNA, Long Noncoding/genetics
    Chemical Substances RNA, Long Noncoding
    Language English
    Publishing date 2016-12
    Publishing country France
    Document type Journal Article ; Review
    ZDB-ID 120345-9
    ISSN 1638-6183 ; 0300-9084
    ISSN (online) 1638-6183
    ISSN 0300-9084
    DOI 10.1016/j.biochi.2016.06.007
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Application of gene expression profiling to cardiovascular disease.

    Henriksen, P A / Kotelevtsev, Y

    Cardiovascular research

    2002  Volume 54, Issue 1, Page(s) 16–24

    Abstract: The number of cardiovascular publications featuring gene expression profiling technologies is growing rapidly. This article introduces four profiling techniques; serial analysis of gene expression, differential display, subtractive hybridisation and DNA ... ...

    Abstract The number of cardiovascular publications featuring gene expression profiling technologies is growing rapidly. This article introduces four profiling techniques; serial analysis of gene expression, differential display, subtractive hybridisation and DNA microarrays. Illustrations of their application towards cardiovascular research are given and their potential for gene discovery and improving our understanding of gene function is discussed.
    MeSH term(s) Animals ; Cardiovascular Diseases/embryology ; Cardiovascular Diseases/etiology ; Cardiovascular Diseases/genetics ; Cells, Cultured ; Gene Expression Profiling ; Humans ; Image Processing, Computer-Assisted ; Models, Animal ; Myocardium/metabolism ; Oligonucleotide Array Sequence Analysis ; Reverse Transcriptase Polymerase Chain Reaction
    Language English
    Publishing date 2002-04
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 80340-6
    ISSN 1755-3245 ; 0008-6363
    ISSN (online) 1755-3245
    ISSN 0008-6363
    DOI 10.1016/s0008-6363(01)00516-8
    Database MEDical Literature Analysis and Retrieval System OnLINE

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