Aim: To establish a method for identification of the activities of matrix metalloproteinases (MMPs) synthesized by cultured hepatic stellate cells (HSC).
Methods: SDS-gelatin polyacrylamide gels electrophoresis was used for the identification of MMPs synthesized by cultured HSC.
Results: MMP-2 and MMP-9 in culture medium and HSC were sensitively identified, and MMP-2 activity was higher than MMP-9 in culture medium, the changes of MMPs in culture medium and HSC were also observed after 24h medicine treatment.
Conclusion: Zymography is suitable for the studies on the role of HSC in the regulation of extracellular matrix turnover.
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Sci Rep
January 2025
Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC-CONICET), Fundación para Investigaciones Biológicas Aplicadas (FIBA), Mar del Plata, 7600, Argentina.
The fungal green synthesis of nanoparticles (NPs) has gained great interest since it is a cost-effective and easy handling method. The process is simple because fungi secrete metabolites and proteins capable of reducing metal salts in aqueous solution, however the mechanism remains largely unknown. The aim of this study was to analyze the secretome of a Trichoderma harzianum strain during the mycobiosynthesis process of zinc and iron nanoparticles.
View Article and Find Full Text PDFBioresour Technol
January 2025
School of Resources and Environment, Hubei Key Laboratory of Regional Development and Environmental Response, Hubei University, Wuhan 430062, China.
In aerobic granular sludge (AGS) system, N-acyl homoserine lactones (AHLs) can effectively regulate the community structure and control filamentous bulking. It would be economically feasible to make mature granules into AHLs-rich AGS extract (AE) to replace synthesized AHLs. In this study, two SBRs were run in a fully aerobic environment and a short cycle (4 h) to culture AGS: R1 with AE adding; R2 served as control.
View Article and Find Full Text PDFPharmaceutics
January 2025
Programa de Posgrado en Odontología, Universidad de Costa Rica, Ciudad Universitaria Rodrigo Facio, San Jose 11501-2060, Costa Rica.
Objectives: This study aimed to synthesize polylactic acid (PLA) nanofibrillar scaffolds loaded with ibuprofen (IBU) using electrospinning (ES) and air-jet spinning (AJS). The scaffolds were evaluated for their physicochemical properties, drug release profiles, and biocompatibility to assess their potential for local analgesic applications.
Methods: Solutions of 10% (/) PLA combined with IBU at concentrations of 10%, 20%, and 30% were processed into nanofibrillar membranes using ES and AJS.
Pharmaceuticals (Basel)
January 2025
Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary.
Methylenebisphosphonic derivatives including hydroxy-methylenebisphosphonic species may be of potential biological activity, and a part of them is used in the treatment of bone diseases. Methylenebisphosphonates may be obtained by the Michaelis-Arbuzov reaction of suitably α-substituted methylphosphonates and trialkyl phosphites or phosphinous esters, while the hydroxy-methylene variations are prepared by the Pudovik reaction of α-oxophosphonates and different >P(O)H reagents, such as diethyl phosphite and diarylphosphine oxides. After converting α-hydroxy-benzylphosphonates and -phosphine oxides to the α-halogeno- and α-sulfonyloxy derivatives, they were utilized in the Michaelis-Arbuzov reaction with trialkyl phosphites and ethyl diphenylphosphinite to afford the corresponding bisphosphonate, bis(phosphine oxide) and phosphonate-phosphine oxide derivatives.
View Article and Find Full Text PDFPharmaceuticals (Basel)
January 2025
Department of Nuclear Medicine, Beijing Tiantan Hospital, Capital Medical University, Beijing 100071, China.
Aromatase plays a crucial role in the conversion of androgens to oestrogens and is often overexpressed in hormone-dependent tumours, particularly breast cancer. [18F]BIBD-071, which has excellent binding affinity for aromatase and good pharmacokinetics, has potential for the diagnosis and treatment of aromatase-related diseases. The MCF-7 cell line, which is hormone receptor-positive (HR+), was used in the assessment of the novel [18F]-labelled radiotracer [18F]BIBD-071 via positron emission tomography (PET) imaging of an HR+ breast cancer xenograft model.
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