Historically, most discussions about nonhuman animal experimentation consider what has become known as the 3 R's: refinement, reduction, and replacement. Refinement and reduction receive the most attention, but recent modeling advances suggest that suitable replacement of nonhuman animal testing would bolster human research and increase translatability to human health outcomes. This article discusses these modeling advances and advocates their use, especially as replacements to nonpredictive nonhuman animal protocols, and discusses growing momentum in biomedical research communities and federal agencies that favors replacement of animal testing.
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http://dx.doi.org/10.1001/amajethics.2024.701 | DOI Listing |
Transpl Int
January 2025
Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States.
An overview is provided of the evolution of strategies towards xenotransplantation during the past almost 40 years, focusing on advances in gene-editing of the organ-source pigs, pre-transplant treatment of the recipient, immunosuppressive protocols, and adjunctive therapy. Despite initial challenges, including hyperacute rejection resulting from natural (preformed) antibody binding and complement activation, significant progress has been made through gene editing of the organ-source pigs and refinement of immunosuppressive regimens. Major steps were the identification and deletion of expression of the three known glycan xenoantigens on pig vascular endothelial cells, the transgenic expression of human "protective" proteins, e.
View Article and Find Full Text PDFPhenomenol Cogn Sci
February 2024
Department of Philosophy, University of Geneva, 5 rue De-Candolle, Genève, 1211 Switzerland.
This paper addresses some apparent philosophical tensions between realism and enactivism by means of Charles Peirce's pragmatism. Enactivism's Mind-Life Continuity thesis has been taken to commit it to some form of anti-realist 'world-construction' which has been considered controversial. Accordingly, a new realist enactivism is proposed by Zahidi ( (3), 461-475, 2014), drawing on Ian Hacking's 'entity realism', which places subjects in worlds comprised of the things that they can successfully manipulate.
View Article and Find Full Text PDFLife Med
October 2022
Bioland Laboratory/Guangzhou Laboratory, Guangzhou 510005, China.
Human induced neural stem/progenitor cells (iNPCs) are a promising source of cells for stem cell-based therapy. The therapeutic potential of human iNPCs has been extensively tested in animal models, including both mouse and monkey models. However, the comprehensive characterization of grafted iNPCs in the brain of non-human primates has been lagged behind.
View Article and Find Full Text PDFXenotransplantation
January 2025
Department of Surgery, Duke University School of Medicine, Durham, North Carolina, USA.
Background: The removal of preformed antibodies with cleaving enzyme like IdeS (Imlifidase) has demonstrated therapeutic potential in organ transplantation for sensitized recipients. However, preformed xenoreactive antibodies (XAbs) against porcine glycans are predominantly IgM and considered detrimental in pig-to-human xenotransplantation.
Methods: Recombinant IceM, an endopeptidase cleaving IgM, was generated in Escherichia coli.
J Alzheimers Dis
January 2025
Rockefeller University, New York, NY, USA.
Dance or rhythmic movement-based training has demonstrated significant efficacy in addressing a range of motor and cognitive deficits associated with neurodegenerative diseases like Parkinson's and Alzheimer's diseases. Leveraging both human and non-human animal behavioral and neurobiological evidence, I hypothesize a possible untapped role of dance training in mitigating impairments in the motor control of speech, a complex sensorimotor behavior affected in these conditions. Here, this hypothesis is supported by an in-depth examination of motor speech deficits in Parkinson's and Alzheimer's diseases, at a behavioral, physiological, and neural level.
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