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J Exp Biol
January 2025
Ornis italica, Rome, Italy.
Rapid reduction of body size in populations responding to global warming suggests the involvement of temperature-dependent physiological adjustments during growth, such as mitochondrial alterations, in the efficiency of producing metabolic energy, a process that is poorly explored, especially in endotherms. Here, we examined the mitochondrial metabolism and proteomic profile of red blood cells in relation to body size and cellular energetics in nestling shearwaters (Calonectris diomedea) developing at different natural temperatures. We found that nestlings of warmer nests had lighter bodies and smaller beaks at fledging.
View Article and Find Full Text PDFJ Cell Sci
January 2025
School of Biological Sciences, Indian Association for the Cultivation of Science, Kolkata-700032, India.
The cytoplasm exhibits viscoelastic properties, displaying both solid and liquid-like behavior, and can actively regulate its mechanical attributes. The cytoskeleton is a major regulator among the numerous factors influencing cytoplasmic mechanics. We explore the interdependence of various cytoskeletal filaments and the impact of their density on cytoplasmic viscoelasticity.
View Article and Find Full Text PDFJ Cell Sci
January 2025
Mechanobiology Institute, National University of Singapore, Singapore 117411, Republic of Singapore.
Pluripotent Stem Cells (PSCs) exhibit extraordinary differentiation potential and are thus highly valuable cellular model systems. However, while different PSC types corresponding to distinct stages of embryogenesis have been in common use, aspects of their cellular architecture and mechanobiology remain insufficiently understood. Here we investigated how the actin cytoskeleton is regulated in different pluripotency states.
View Article and Find Full Text PDFCurr Top Med Chem
January 2025
Graphic Era (Deemed to be University), Clement Town Dehradun, India.
Alzheimer's Disease (AD), a progressive neurodegenerative disorder, is characterized by the accumulation of neurofibrillary tangles and β-amyloid plaques, leading to a decline in cognitive function. AD is characterized by tau protein hyperphosphorylation and extracellular β-amyloid accumulation. Even after much research, there are still no proven cures for AD.
View Article and Find Full Text PDFCurr Top Med Chem
January 2025
Department of Chemistry, University of Swabi, Anbar 23561, Khyber Pakhtunkhwa, Pakistan.
Background: In continuation of our chemical and biological work on Tithonia tubaeformis, we evaluated the antipyretic activity of its extract which on fractionation gives a pure alkaloid galegine. Galegine a bioprivileged compound, is a hemiterpene bearing a guanidine group, which holds significant importance in medicinal chemistry. Biological activities such as antimicrobial, antidiabetic, anti-inflammatory, cardiovascular, anticancer, and antihypertensive, are often associated with guanidine-containing molecules.
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