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The relationship between locomotion and hindlimb morphology in the leopard (Panthera pardus) using a geometric morphometric approach.
Biol Open
December 2024
School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Wits 2050, Johannesburg, Gauteng 2000, South Africa.
Felid bone morphology is highly influenced by factors such as locomotion, body size, and foraging behaviour. Understanding how these factors influence bone morphology is important for interpreting the behaviour and ecology of such species. This study aimed to determine the extent to which Panthera pardus (i.
View Article and Find Full Text PDFNew from opposite ends of the world.
Stud Mycol
December 2024
Environmental Microbiology Laboratory, Department of Agricultural Biological Chemistry, College of Agriculture & Life Sciences, Chonnam National University, Gwangju 61186, South Korea.
The is a group of ancient fungi with global distribution. In the current study we accessed mucoralean fungi isolated from two countries on opposite sides of the Earth and in different hemispheres: South Korea and Brazil. isolates were obtained from freshwater, soil, invertebrates, and fruit seeds and identified using phenotypic techniques combined with the DNA sequence data.
View Article and Find Full Text PDFFrequency-dependent assembly processes determine the coexistence and relative abundance of tropical plant species.
Nat Ecol Evol
December 2024
Department of Biological Sciences, Marquette University, Milwaukee, WI, USA.
Testing the extent to which ecological communities are structured by deterministic (niche-based) assembly processes, resulting in predictable species abundance and composition, is a fundamental goal of ecology. Here we use a 10-year dataset of 55,156 lianas comprising 86 species in an old-growth tropical forest in Panama to test whether community assembly is consistent with niche-based assembly processes. We find that species diversity and community composition was maintained because species conformed to four general requirements of coexistence theory: (1) species have negative conspecific frequency-dependent feedback that control their local population size; (2) species have a stronger negative effect on their own population than that of heterospecifics; (3) the equilibrium frequencies of species correspond to their relative abundance; and (4) species have positive invasibility.
View Article and Find Full Text PDFNeuroblastoma-derived hypoxic extracellular vesicles promote metastatic dissemination in a zebrafish model.
PLoS 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.
View Article and Find Full Text PDFPulmonary lysyl oxidase expression and its role in seeding Lewis lung carcinoma cells.
Clin Exp Metastasis
December 2024
Christopher S. Bond Life Sciences Center 540F, University of Missouri, 1201 E Rollins, Columbia, MO, 65211, USA.
Copper promotes tumor growth and metastasis through a variety of mechanisms, most notably as a cofactor within the lysyl oxidase (LOX) family of secreted cuproenzymes. Members of this family, which include LOX and LOX-like enzymes LOXL1-4, catalyze the copper-dependent crosslinking of collagens and elastin within the extracellular matrix (ECM). Elevated LOX expression is associated with higher incidence and worse prognosis in multiple cancers, including colorectal, breast, pancreatic, and head and neck.
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