The increasing importance of zebrafish as a biomedical model organism is reflected by the steadily growing number of publications and laboratories working with this species. Regulatory recommendations for euthanasia as issued in Directive 2010/63/EU are, however, based on experience with fish species used for food production and do not take the small size and specific physiology of zebrafish into account. Consequently, the currently recommended methods of euthanasia in the Directive 2010/63/EU are either not applicable or may interfere with research goals. An international workshop was held in Karlsruhe, Germany, March 9, 2017, to discuss and propose alternative methods for euthanasia of zebrafish. The aim was to identify methods that adequately address the physiology of zebrafish and its use as a biomedical research model, follow the principles of the 3Rs (Replacement, Reduction, and Refinement) in animal experimentation and consider animal welfare during anesthesia and euthanasia. The results of the workshop are summarized here in the form of a white paper.
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http://dx.doi.org/10.1089/zeb.2017.1508 | DOI Listing |
Front Neurol
December 2024
Department of Neurosurgery, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China.
Background: Cerebral arteriovenous malformations (AVMs) are intricate vascular anomalies that disrupt normal cerebral blood flow, potentially leading to severe neurological complications. Although the pathology of AVMs is not fully understood, epigenetic mechanisms have been implicated in their formation.
Methods: Transcriptional differences between cerebral AVMs and normal tissues were analyzed using RNA sequencing (RNA-seq), identifying IGF2BP2 as a key differentially expressed gene.
iScience
December 2024
Department of Developmental Biology and Regeneration, Institute of Anatomy, University of Bern, 3012 Bern, Switzerland.
Autophagy-lysosomal degradation is a conserved homeostatic process considered to be crucial for cardiac morphogenesis. However, both its cell specificity and functional role during heart development remain unclear. Here, we introduced zebrafish models to visualize autophagic vesicles and track their temporal and cellular localization in the larval heart.
View Article and Find Full Text PDFACS Appl Bio Mater
December 2024
Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Hyderabad 502285, India.
Triple-negative breast cancer (TNBC) is known for its aggressive nature, typically presenting as high-grade tumors that grow and spread quickly in all breast cancer types. Several studies have reported a strong correlation between cancer and microbial infections due to a compromised immune system. The most frequent infection associated with surface malignancies, including breast cancer, is Candidiasis, which is majorly caused by .
View Article and Find Full Text PDFCurr Biol
December 2024
Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA. Electronic address:
Animals need to rapidly learn to recognize and avoid predators. This ability may be especially important for young animals due to their increased vulnerability. It is unknown whether, and how, nascent vertebrates are capable of such rapid learning.
View Article and Find Full Text PDFPLoS One
December 2024
Fondazione Istituto di Ricerca Pediatrica Città della Speranza (IRP), Padova, Italy.
The zebrafish (Danio rerio) is a valuable model organism for studying human biology due to its easy genetic manipulation and small size. It is optically transparent and shares genetic similarities with humans, making it ideal for studying developmental processes, diseases, and drug screening via imaging-based approaches. Solid malignant tumors often contain hypoxic areas that stimulate the release of extracellular vesicles (EVs), lipid-bound structures released by cells into the extracellular space, that facilitate short- and long-range intercellular communication and metastatization.
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