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"Pathway Leap": A New Molecular Phenomenon to Consider in the Pathogenesis of Melanocytic Tumors.
Am J Dermatopathol
December 2024
Department of Cellular Pathology, Hospital El Bierzo, Ponferrada, Spain.
Introduction: The current WHO classification of melanocytic tumors distinguishes 9 pathogenic routes. This classification is based on the conceptual interpretation that melanocytic tumors evolve from benign counterparts, accumulating mutations, eventually developing into melanomas with metastatic and potentially lethal capacity. In this article, we present a molecular study of 2 melanocytic tumors that suggest a "leap" from pathogenic routes IV to I.
View Article and Find Full Text PDFSuperstable lipid vacuoles endow cartilage with its shape and biomechanics.
Science
January 2025
Department of Developmental and Cell Biology, University of California, Irvine, Irvine, CA, USA.
Conventionally, the size, shape, and biomechanics of cartilages are determined by their voluminous extracellular matrix. By contrast, we found that multiple murine cartilages consist of lipid-filled cells called lipochondrocytes. Despite resembling adipocytes, lipochondrocytes were molecularly distinct and produced lipids exclusively through de novo lipogenesis.
View Article and Find Full Text PDFClinical, histopathological and parasitological follow-up of dogs naturally infected by Leishmania infantum before and after miltefosine treatment and associated therapies.
PLoS One
January 2025
Department of Microbiology, Immunology and Parasitology, Laboratory of Protozoology, Federal University of Santa Catarina, Florianópolis, SC, Brazil.
In Brazil, Visceral Leishmaniases is caused by Leishmania infantum, and domestic dogs are the main reservoirs in its urban transmission cycle. As an alternative to euthanizing dogs, miltefosine has been used to treat canine visceral leishmaniasis since 2016. In this study, we have assessed the efficacy of miltefosine for treating canine visceral leishmaniasis in a new endemic area through follow-up of naturally infected dogs was evaluated.
View Article and Find Full Text PDFIntegrative physiological, biochemical, and proteomic analysis of the leaves of two cotton genotypes under heat stress.
PLoS One
January 2025
Department of Biochemistry, Bahauddin Zakariya University, Multan, Pakistan.
Cotton (Gossypium hirsutum L.), a crucial global fibre and oil seed crop faces diverse biotic and abiotic stresses. Among these, temperature stress strongly influences its growth, prompting adaptive physiological, biochemical, and molecular changes.
View Article and Find Full Text PDFMultiplicity of type 6 secretion system toxins limits the evolution of resistance.
Proc Natl Acad Sci U S A
January 2025
Division of Evolution, Infection and Genomics, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9NT, United Kingdom.
The bacterial type 6 secretion system (T6SS) is a toxin-injecting nanoweapon that mediates competition in plant- and animal-associated microbial communities. Bacteria can evolve de novo resistance against T6SS attacks, but resistance is far from universal in natural communities, suggesting key features of T6SS weaponry may act to limit its evolution. Here, we combine ecoevolutionary modeling and experimental evolution to examine how toxin type and multiplicity in attackers shape resistance evolution in susceptible competitors.
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