Klebsiella oxytoca is a gram-negative bacterium that can be found throughout the environment as well as on mucosal membranes of mammals including humans. This bacterium is responsible for a variety of infections in humans including nosocomial infections resulting in hospital outbreaks. Reptiles including snakes, tuataras, and turtles have been shown to harbor this bacterium, and previous studies have shown that pet reptiles are a potential source for dissemination of pathogenic bacteria. Green anoles (Anolis carolensis) are a common lizard found in the southeastern part of the United States. For this study, the prevalence of K. oxytoca in free-living green anoles from Louisiana was tested to determine whether anoles are a possible source of pathogenic bacteria. Of the 42 green anoles tested, 7 (17%) were positive for K. oxytoca, demonstrating that anoles are a potential source for human infection from this bacterium.
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http://dx.doi.org/10.1089/vbz.2016.2023 | DOI Listing |
Proc Natl Acad Sci U S A
December 2024
Department of Stem Cell Biology and Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles CA 90033.
During tissue regeneration, lineage-related cells can switch their fate to replace missing cells. This cell plasticity is particularly prominent in more regenerative vertebrates such as zebrafish, yet the molecular basis by which cells transdifferentiate into another cell type upon injury remains unclear. Here, we investigate the epigenetic basis of regenerative transdifferentiation in the inner ear, where supporting cells (SCs) generate mechanosensory hair cells (HCs) upon damage.
View Article and Find Full Text PDFJ Exp Zool A Ecol Integr Physiol
December 2024
Department of Biological Sciences, Minnesota State University, Mankato, Minnesota, USA.
Horm Behav
November 2024
Department of Biological Sciences, Minnesota State University, Mankato, Mankato, MN 56001-6062, USA. Electronic address:
Melatonin is a natural hormone that regulates seasonal behaviors in vertebrates by binding to its receptors (MT1 and MT2). Specifically, high levels of melatonin are associated with short photoperiods, often coinciding with the non-breeding season, meaning that melatonin may inhibit seasonal reproduction. Green anole lizards (Anolis carolinensis), have large, active gonads, increased levels of testosterone and estradiol, and increased reproductive behaviors during the breeding season.
View Article and Find Full Text PDFScience
September 2024
Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México (UNAM), CP62210 Cuernavaca, México.
Long noncoding RNAs (lncRNAs) are essential regulatory elements of sex chromosomes that act to equalize gene expression levels between males and females. , , and regulate X chromosomes in placental mammals, marsupials, and , respectively. Because the green anole () shows complete dosage compensation of its X chromosome, we tested whether a lncRNA was involved.
View Article and Find Full Text PDFSci China Life Sci
December 2024
Hubei Hongshan Laboratory, College of Fisheries, Huazhong Agricultural University, Wuhan, 430070, China.
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