In this study, we report our contribution to the application of the copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction for the synthesis of β-keto-1,2,3-triazole derivatives from ethinylestradiol and their application in the inhibition of two human cancer cells lines: human breast adenocarcinoma (MCF-7) and human hepatocellular carcinoma (HepG2). The β-keto-1,2,3-triazole derivates exhibited moderate cytotoxic activity for the HepG2 cells with IC values of 29.7 μM (), 16.4 μM (), 17.8 μM (), 20.4 μM (), 28.1 μM () and 28.2 μM (). The semi-synthetic β-keto-1,2,3-triazoles derivatives were all characterized by FT-IR, NMR, HRMS and [α].
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http://dx.doi.org/10.1016/j.heliyon.2019.e02408 | DOI Listing |
Chem Biodivers
January 2025
Yantai Institute of Coastal Zone Research, Coastal biology and Bioresource Utilization, 17 Chunhui Road, 264003, Yantai, CHINA.
The fungal genus Fusarium is a treasure-trove of structurally diverse secondary metabolites, contributed greatly by marine-derived strains. A new cedrane sesquiterpene, fusacedrol (1), and a new fusarin member, fusarin M (2), were isolated from F. graminearum 12Ⅱ2N that was isolated as an endophyte from the marine brown alga Sargassum sp.
View Article and Find Full Text PDFOtolaryngol Head Neck Surg
January 2025
Department of Otolaryngology-Head and Neck Surgery, The Ohio State University College of Medicine, Columbus, Ohio, USA.
The Centers for Medicare & Medicaid Services (CMS) recently increased payment for evaluation and management (E/M) visits, but did not apply these updates to post-operative global period visits. We investigated the resulting Medicare fee-for-service revenue loss for otolaryngologists. Using publicly available Medicare spending/utilization data, we estimated how much additional payment otolaryngologists would have received in 2023 if CMS had reimbursed global period visits at the same rates as other E/M visits.
View Article and Find Full Text PDFChem Biodivers
January 2025
Qingdao Agricultural University, School of Life Sciences, Qingdao, CHINA.
Three new pyridine derivatives, irpelactedines A-C (1-3), and a new furan derivative, irpelactedine D (5), along with two structurally related known compounds, irpexidine A (4) and 5-carboxy-2-furanpropanoic acid (6), were isolated from the medicinal fungus Irpex lacteus SY1002. Their structures were elucidated through NMR and mass spectral analyses, combined with density functional theory calculations of ECD data. Evaluation of angiotensin-converting enzyme (ACE) inhibitory activity revealed that compounds 1 and 3 displayed moderate inhibition, with IC50 values of 31.
View Article and Find Full Text PDFExp Dermatol
January 2025
Department of Dermatology, Kansai Medical University, Hirakata, Osaka, Japan.
Chronic inflammation in the tumour microenvironment (TME) via Th2-polarisation promotes melanoma progression and metastasis, making it a target for immunotherapy. Interleukin (IL)-4 is considered essential for Th2-polarisation in the TME; however, its source remains unknown. Basophils have been postulated as one of its sources.
View Article and Find Full Text PDFJ Anat
January 2025
Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland.
Changes in the microstructure of the aortic wall precede the progression of various aortic pathologies, including aneurysms and dissection. Current clinical decisions with regards to surgical planning and/or radiological intervention are guided by geometric features, such as aortic diameter, since clinical imaging lacks tissue microstructural information. The aim of this proof-of-concept work is to investigate a non-invasive imaging method, diffusion tensor imaging (DTI), in ex vivo aortic tissue to gain insights into the microstructure.
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