Aim: The influence of antitumor compounds on glioblastoma cell activity can be successfully investigated on an in ovo model. To consider an in ovo model as a reliable tool for estimation of anticancer drug efficacy, the biological activity of tumors growing in such conditions should be comparable to spontaneous cases. The aim of the present study was to evaluate the biological characteristics of glioblastoma multiforme (GBM) tumors - defined as their proliferative and apoptotic activities - growing on an in ovo model.
Materials And Methods: The GBM U-87 cell line was cultured on the chorioallantoic membrane of chicken eggs. After 12 days, cells were isolated and processed with H&E and immunohistochemical methods. The proliferative activity of GBM was established on the basis of mitotic and Ki-67(+) cells index. Apoptotic index was estimated by the Terminal Deoxynucleotidyl Transferase dUTP Nick-End Labeling (TUNEL) method.
Results: The biological activity of tumor tissue cultured in ovo corresponds to that of primary glioblastoma multiforme.
Conclusion: GBM in in ovo model can be successfully applied in oncological studies.
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Nanoscale
January 2025
Photon Science Research Center for Carbon Dioxide, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
Oxygen vacancies (V's) are of paramount importance in influencing the properties and applications of ceria (CeO). Yet, comprehending the distribution and nature of V's poses a significant challenge due to the vast number of electronic configurations and intricate many-body interactions among V's and polarons (Ce ions). In this study, we established a cluster expansion model based on first-principles calculations and statistical learning to decouple the interactions among the Ce ions and V's, thereby circumventing the limitations associated with sampling electronic configurations.
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December 2024
Cancer Research UK Cambridge Institute, Li Ka Shing Centre, University of Cambridge, Cambridge CB2 0RE, United Kingdom
The gene-regulatory mechanisms controlling the expression of the germline PIWI-interacting RNA (piRNA) pathway components within the gonads of metazoan species remain largely unexplored. In contrast to the male germline piRNA pathway, which in mice is known to be activated by the testis-specific transcription factor A-MYB, the nature of the ovary-specific gene-regulatory network driving the female germline piRNA pathway remains a mystery. Here, using as a model, we combined multiple genomics approaches to reveal the transcription factor Ovo as regulator of the germline piRNA pathway in ovarian germ cells.
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January 2025
Division of Nuclear Medicine, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria.
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View Article and Find Full Text PDFCarbohydr Polym
March 2025
Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Faculty of Pharmacy, Instituto de Materiales (iMATUS), and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain. Electronic address:
Biofilm formation on biological and material surfaces represents a heavy health and economic burden for both patient and society. To contrast this phenomenon, medical devices combining antibacterial and pro-wound healing abilities are a promising strategy. In the present work, Xanthan gum/Guar gum (XG/GG)-based scaffolds were tuned with thymol and Zn to obtain wound dressings that combine antibacterial and antibiofilm properties and favour the healing process.
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January 2025
Department of Medical Affairs, Curie Sciences, Samastipur, Bihar, India.
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