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Dental mesenchymal stromal/stem cells in different microenvironments— implications in regenerative therapy

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World Journal of Stem Cells 2021年第12期13卷 1863-1880页

作者： Ivana Okić-Đorđević Hristina Obradović Tamara Kukolj Anđelija Petrović Slavko Mojsilović Diana Bugarski aleksandra jauković Laboratory for Experimental Hematology and Stem Cells Institute for Medical ResearchUniversity of BelgradeBelgrade 11129Serbia

Current research data reveal microenvironment as a significant modifier of physical functions,pathologic changes,as well as the therapeutic effects of stem *** comparing regeneration potential of various stem cell types used for cytotherapy and tissue engineering,mesenchymal stem cells(MSCs)are currently the most attractive cell source for bone and tooth regeneration due to their differentiation and immunomodulatory potential and lack of ethical issues associated with their *** microenvironment of donors and recipients selected in cytotherapy plays a crucial role in regenerative potential of transplanted MSCs,indicating interactions of cells with their microenvironment indispensable in MSC-mediated bone and dental *** a variety of MSC populations have been procured from different parts of the tooth and tooth-supporting tissues,MSCs of dental origin and their achievements in capacity to reconstitute various dental tissues have gained attention of many research groups over the *** review discusses recent advances in comparative analyses of dental MSC regeneration potential with regards to their tissue origin and specific microenvironmental conditions,giving additional insight into the current clinical application of these cells.

关键词： Microenvironment Dental mesenchymal stem cells Modulation of regenerative potential Tissue origin Hypoxia microenvironment Inflammatory microenvironment Clinical application

Metabolic dysfunction-associated steatotic liver disease:Navigating terminological evolution,diagnostic frontiers and therapeutic horizon-an editorial exploration

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World Journal of Gastroenterology 2024年第18期30卷 2387-2390页

作者： aleksandra Boldys Lukasz Buldak Department of Internal Medicine and Clinical Pharmacology School of Medicine in KatowiceMedical University of SilesiaKatowice 40-752Poland

Metabolic dysfunction-associated steatotic liver disease(MASLD),once known as non-alcoholic fatty liver disease(NAFLD),represents a spectrum of liver disorders characterized by lipid accumulation within *** redefinition of NAFLD in 2023 marked a significant reposition in terminology,emphasizing a broader understanding of liver steatosis and its associated *** is now recognized as a major risk factor for liver cirrhosis,hepatocellular carcinoma,and systemic complications such as cardiovascular diseases or systemic *** challenges arise,particularly in identifying MASLD in lean individuals,necessitating updated diagnostic protocols and investing in non-invasive diagnostic ***,there is an urgent need for effective treatments targeting MASLD,with emerging pharmacological options focusing on,among others,carbohydrate and lipid ***,understanding the roles of bile acid metabolism,the microbiome,and dietary interventions in MASLD pathogenesis and management holds promise for innovative therapeutic *** is a strong need to emphasize the importance of collaborative efforts in understanding,diagnosing,and managing MASLD to improve physicians’approaches and patient outcomes.

关键词： Metabolic dysfunction-associated steatotic liver disease Diagnostics Pathophysiology of metabolic dysfunction-associated steatotic liver disease Therapy of metabolic dysfunction-associated steatotic liver disease Therapeutic innovations

HIFs in hypoxic regulation of the extracellular matrix:focus on little-known player HIF-3

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BIOCELL 2024年第5期48卷 677-692页

作者： aleksandra GORNOSTAEVA LUDMILA BURAVKOVA MARGARITA LOBANOVA ELENA ANDREEVA Institute of Biomedical Problems of the Russian Academy of Sciences Khoroshevskoye Shosse 76AMoscow123007Russia

The structural and associated molecules of the extracellular matrix(ECM)complex is an important component of the local milieu of cells,both for maintaining their functions and *** is a dynamic structure that is finely tuned to changes in the *** of these factors is hypoxia,which can arise in tissues due to physiological or pathological *** a result of the hypoxic effect,the properties of the ECM are significantly modified,stiffness increases,the balance between degradation and synthesis of structural proteins shifts,and the deposition of biologically active mediators’***-inducible factors(HIFs)contribute significantly to the modification of the properties of the ECM under *** the three HIF isoforms,HIF-1 is the most studied,with numerous identified target genes encoding proteins that participate in all matrisome *** less is known about HIF-2 and *** the context of the effects of hypoxia on the matrisome,HIF-3 isoform is of particular *** the first two isoforms,transiently expressed during the first hours of hypoxia,HIF-3 is activated after around 24 h of exposure to hypoxia and persists for a longer *** addition,its transcription is more pronounced under hypoxia than are HIFs 1 and ***-3,rather than the first two isoforms,is possibly responsible for the changes that occur in matrisome during prolonged hypoxic *** review attempts to summarize the available data on the involvement of HIF-3 in the matrisome modification under hypoxia.

关键词： Hypoxia Hypoxia-inducible factors Matrisome

Development and characterization of 3D-printed electroconductive pHEMA-co-MAA NP-laden hydrogels for tissue engineering

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Bio-Design and Manufacturing 2024年第3期7卷 262-276页

作者： Sara De Nitto aleksandra Serafin Alexandra Karadimou Achim Schmalenberger John J.EMulvihill Maurice N.Collins DIBRIS Polytechnic Inter-School Section University of Genoa16126 GenoaItaly School of Engineering Bernal InstituteUniversity of LimerickLimerick V94 T9PXIreland School of Natural Sciences Department of Biological SciencesUniversity of LimerickLimerick V94 T9PXIreland Health Research Institute University of LimerickLimerick V94 T9PXIreland AMBER University of LimerickLimerick V94 T9PXIreland

Tissue engineering(TE)continues to be widely explored as a potential solution to meet critical clinical needs for diseased tissue replacement and tissue *** this study,we developed a poly(2-hydroxyethyl methacrylate-co-methacrylic acid)(pHEMA-co-MAA)based hydrogel loaded with newly synthesized conductive poly(3,4-ethylene-dioxythiophene)(PEDOT)and polypyrrole(PPy)nanoparticles(NPs),and subsequently processed these hydrogels into tissue engineered constructs via three-dimensional(3D)*** presence of the NPs was critical as they altered the rheological properties during ***,all samples exhibited suitable shear thinning properties,allowing for the development of an optimized processing window for 3D *** were 3D printed into pre-determined disk-shaped configurations of 2 and 10 mm in height and diameter,*** observed that the NPs disrupted the gel crosslinking efficiencies,leading to shorter degradation times and compressive mechanical properties ranging between 450 and 550 *** conductivity of the printed hydrogels increased along with the NP concentration to(5.10±0.37)×10^(−7)S/*** vitro studies with cortical astrocyte cell cultures demonstrated that exposure to the pHEMA-co-MAA NP hydrogels yielded high cellular viability and proliferation ***,hydrogel antimicrobial studies with staphylococcus epidermidis bacteria revealed that the developed hydrogels affected bacterial *** together,these materials show promise for various TE strategies.

关键词： Conductive nanoparticles Hydroxyethyl methacrylate(HEMA) Ultraviolet(UV)polymerization 3D printing

Physiological strategies in wild rodents:immune defenses of commensal rats

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Integrative Zoology 2024年第3期19卷 350-370页

作者： Ivana MIRKOV Dina TUCOVIC Jelena KULAS Anastasija MALESEVIC Dragan KATARANOVSKI Milena KATARANOVSKI aleksandra POPOV ALEKSANDROV Immunotoxicology Group Department of EcologyInstitute for Biological Research“Sinisa Stankovic”—National Institute of Republic of SerbiaUniversity of BelgradeBelgradeSerbia

The importance of issues associated with urban/commensal rats and mice(property damage,management costs,and health risks)press upon research on these *** the demography of commensal rodents is mostly studied,the need for understanding factors influencing their natural morbidity/mortality is also *** this respect,more attention is expected to be paid to immunity,the physiological mechanism of defense against host survival threats(pathogens,parasites,diseases).Commensal rats and mice carry numerous pathogens that evoke diverse immune *** state of immunity in commensal house mice is studied in great detail,owing to the use of laboratory strains in biomedical *** commensal rats are,compared to mice,carriers of more zoonotic agents,rats’immunity is studied mainly in that *** of these zoonotic agents cause chronic,asymptomatic infections,which justified studies of immunological mechanisms of pathogen tolerance versus clearance regulation in *** of some infections in specific tissues/organs pressed upon analysis of local/regional immune responses and/or immunopathology.A survey of immunological activity/responses in commensal rats is given in this review,with mention of existing data in commensal *** should throw some light on the factors relevant to their morbidity and lifespan,supplementing the knowledge of commensal rodent ecology.

关键词： commensal rats and mice immunopathology infection inflammation tolerance

Polyelectrolyte Complexes between Hyperbranched and Linear Polysaccharides: Fucoidan/Chitosan

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Chinese Journal of Polymer Science 2024年第4期42卷 468-479页

作者： Ekaterina R.Gasilova Daria N.Poshina aleksandra O.Sitnikova Natalia N.Saprykina Yury A.Skorik Institute of Macromolecular Compounds of the Russian Academy of Sciences Bolshoi VO 31St.Petersburg199004Russian Federation

Polyelectrolyte complexes(PECs)of hyperbranched(HB)and linear polysaccharides are promising as more effective encapsulation agents compared to PECs formed by linear *** investigated the PECs between the HB anionic polysaccharide fucoidan(FUC)and the cationic linear polysaccharide chitosan(CS).The FUC had a molecular weight(MW)of 30×*** PECs were prepared in three solvents(water,0.01 and 0.1 mol/L acetic acid)with CS of MW of 15,110 and 170 kDa,and deacetylation degrees(DDA)of 70%and 97%.The structures of the PECs and the initial FUC were investigated by multi-angle static and dynamic light *** the FUC contained 18 wt%of—OSO3 groups and 5 wt%of uronic acid units,it was a“strong-weak”copolyanion,so the HB macromolecules of the FUC formed nanogel particles in 0.1 mol/L AcOH and open branched structures in water,as confirmed by the Kratky *** mixing the solutions of original components,the PEC structures underwent an equilibration period,the duration of which increased with the MW of *** the charge stoichiometry was approached,the PECs shrank;the fractal dimension approached unity,indicating the side-by-side packing of adjacent FUC branches with the help of *** aggregation in the vicinity of the charge compensation was hardly observed,as it occurred in a very narrow *** PEC content at theζ-potential inversion depended on solvents’pH and the DDA of *** the extreme case of core-shell PECs in 0.1 mol/L AcOH,obtained by mixing FUC nanogels with the solutions of high MW CS of 97%DDA,the protruding tails of CS formed a positively charged shell in the whole range of FUC content(10 wt%

关键词： Polyelectrolyte complexes Chitosan Hyperbranched fucoidan Light scattering

Catalytic co-combustion of biomass and brown coal in a fluidized bed:Economic and environmental benefits

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Journal of Environmental Sciences 2024年第6期140卷 24-36页

作者： Yury V.Dubinin Nikolay A.Yazykov Petr M.Yeletsky Roman B.Tabakaev aleksandra I.Belyanovskaya Vadim A.Yakovlev Federal Research Center Boreskov Institute of Catalysis SB RAS Lavrentiev Ave.5Novosibirsk630090Russia University of Tyumen Volodarskogo str.6Tyumen625003Russia

The work is devoted to the study of combustion of brown coal,pine sawdust,and their mixtures in a fluidized bed of catalyst at 600-750℃.It is shown that an increase in the content of sawdust in a mixture with brown coal leads to an increase in the burnout degree of solid fuel from 94.4%to 99.9%,while the emission of greenhouse gases in the form of CO_(2)CO and NOxis reduced(CO_(2)from the biomass is not included in the balance).The high content of alkaline earth metal oxides(CaO and MgO)in the mineral part of brown coal,sawdust,and their mixtures eliminates the emission of sulfur oxides and the slagging of heat-exchange surfaces during the combustion in a fluidized bed of *** optimal temperature,when the highest burnout degree of the above fuels is achieved in the combustion is 750℃.It is also shown that the increase in temperature and the content of sawdust in the composition of the fuel mixtures has a positive effect on the economic and environmental process indicators.

关键词： Co-combustion Fluidized catalyst bed Biomass Coal Economic effect Environmental impact

Rare extraintestinal manifestations of ulcerative colitis treated with dual biologic therapy:A case report

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World Journal of Clinical Cases 2024年第23期12卷 5441-5447页

作者： aleksandra Filipiuk Maciej Gonciarz Department of Gastroenterology and Internal Medicine Military Institute of Medicine-National Research Institute in WarsawWarsaw 04-141Poland

BACKGROUND Ulcerative colitis(UC)is an idiopathic,chronic inflammatory bowel disease(IBD)most often located in the rectum,but may involve the entire *** intestinal manifestations(EIMs)occur with varying frequency depending on the affected *** most common ones are musculoskeletal EIMs,affecting up to 33%-40%of IBD *** include,among others,inflammatory back pain,tendinitis,plantar fasciitis and *** a few case reports in literature discuss Achilles *** SUMMARY This report describes a patient with UC and Achilles tendinitis in whom after many unsuccessful attempts of treatment with sulfasalazine,mesalazine,glucocorticosteroids,infliximab and tofacitinib,a complete UC remission and resolution of Achilles tendinitis were achieved with the use of dual biologic therapy(DBT)-ustekinumab and adalimumab(ADA).CONCLUSION This case mentions rare EIMs of UC and suggests that DBT may be an alternative for patient with ulcerative colitis and EIMs.

关键词： Achilles tendinitis Dual biologic therapy Extraintestinal manifestations Spondyloarthropathy Ulcerative colitis Case report

Inflammatory myofibroblastic tumor from molecular diagnostics to current treatment

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Oncology Research 2024年第7期32卷 1141-1162页

作者： PAULINA CHMIEL aleksandra SŁOWIKOWSKA ŁUKASZ BANASZEK ANNA SZUMERA-CIEĆKIEWICZ BARTŁOMIEJ SZOSTAKOWSKI MATEUSZ J.SPAŁEK TOMASZŚWITAJ PIOTR RUTKOWSKI ANNA M.CZARNECKA Department of Soft Tissue/Bone Sarcoma and Melanoma Maria Sklodowska-Curie National Research Institute of OncologyWarsaw02-781Poland Faculty of Medicine Medical University of WarsawWarsaw02-091Poland Department of Pathology Maria Sklodowska Curie National Research Institute of OncologyWarsaw02-781Poland Department of Radiotherapy Maria Sklodowska-Curie National Research Institute of OncologyWarsaw02-781Poland

Inﬂammatory myoﬁbroblastic tumor(IMT)is a rare neoplasm with intermediate malignancy characterized by a propensity for recurrence but a low metastatic *** challenges arise from the diverse pathological presentation,variable symptomatology,and lack of different imaging ***,IMT is identiﬁed by the fusion of the anaplastic lymphoma kinase(ALK)gene,which is present in approximately 70%of cases,with various fusion partners,including ran-binding protein 2(RANBP2),which allows conﬁrmation of the *** surgery is the preferred approach for localized tumors,the optimal long-term treatment for advanced or metastatic disease is difﬁcult to deﬁ*** therapies are crucial for achieving sustained response to treatment within the context of genetic alteration in ***,an ALK tyrosine kinase inhibitor(TKI),was ofﬁcially approved by the US Food and Drug Administration(FDA)in 2020 to treat IMT with ALK ***,most patients face resistance and disease progression,requiring consideration of sequential *** radiotherapy with targeted therapy appears to be beneﬁcial in this *** promising results have also been achieved with immunotherapy,indicating potential for combined therapy ***,deﬁned recommendations are still *** review analyzes the available research on IMT,including genetic disorders and their impact on the course of the disease,data on the latest targeted therapy regimens and the possibility of developing immunotherapy in this indication,as well as summarizing general knowledge about prognostic and predictive factors,also in terms of resistance to systemic therapy.

关键词： Inﬂammatory myoﬁbroblastic tumor(IMT) Epithelioid inﬂammatory myoﬁbroblastic sarcoma Tyrosine kinase inhibitors(TKI) Anaplastic lymphoma kinase(ALK)