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Unexpected cyanobacterial communities in highly heterogeneous toxic blooms from a Mediterranean protected area.
Environ Res
January 2025
Department of Biology, Universidad Autónoma de Madrid, Madrid, Spain. Electronic address:
The negative effects associated with cyanobacterial blooms are of particular concern in protected ecosystems, as these areas are ecologically significant and attract a high number of visitors. This study aims to explore the cyanobacterial communities and associated toxicity in three reservoirs located within a Mediterranean National Park with a compromised situation at basin-level. Our results demonstrate the occurrence of dense toxic blooms containing microcystins (reaching values close to 280 μg L) and low levels of anatoxin-a and saxitoxins (up to 0.
View Article and Find Full Text PDFDeep-Sea Ecosystems as an Unexpected Source of Antibiotic Resistance Genes.
Mar Drugs
December 2024
NHC Key Laboratory of Tropical Disease Control, School of Tropical Medicine, Hainan Medical University, Haikou 571199, China.
The deep-sea ecosystem, a less-contaminated reservoir of antibiotic resistance genes (ARGs), has evolved antibiotic resistance for microbes to survive and utilize scarce resources. Research on the diversity and distribution of these genes in deep-sea environments is limited. Our metagenomics study employed short-read-based (SRB) and assembled-contig-based (ACB) methods to identify ARGs in deep-sea waters and sediments and assess their potential pathogenicity.
View Article and Find Full Text PDFLocal erythropoiesis directs oxygen availability in bone fracture repair.
bioRxiv
January 2025
Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA.
Bone fracture ruptures blood vessels and disrupts the bone marrow, the site of new red blood cell production (erythropoiesis). Current dogma holds that bone fracture causes severe hypoxia at the fracture site, due to vascular rupture, and that this hypoxia must be overcome for regeneration. Here, we show that the early fracture site is not hypoxic, but instead exhibits high oxygen tension (> 55 mmHg, or 8%), similar to the red blood cell reservoir, the spleen.
View Article and Find Full Text PDFTargeted Transcriptome Analysis of Beef Cattle Persistently Infected with Bovine Viral Diarrhea Virus.
Genes (Basel)
November 2024
College of Veterinary Medicine, University of Tennessee, Knoxville, TN 37919, USA.
Background: Bovine viral diarrhea virus (BVDV) is an endemic virus of North American cattle populations with significant economic and animal health impacts. While BVDV infection has a myriad of clinical manifestations, a unique and problematic outcome is the establishment of a persistently infected (PI) animal following in utero viral infection. While it is well established that PI animals serve as a constant reservoir of BVDV, the mechanism for the maintained infection remains unknown despite multiple theories.
View Article and Find Full Text PDFReservoir computing with generalized readout based on generalized synchronization.
Sci Rep
December 2024
Department of Applied Mathematics, Tokyo University of Science, Shinjuku, Tokyo, 162-8601, Japan.
Reservoir computing is a machine learning framework that exploits nonlinear dynamics, exhibiting significant computational capabilities. One of the defining characteristics of reservoir computing is that only linear output, given by a linear combination of reservoir variables, is trained. Inspired by recent mathematical studies of generalized synchronization, we propose a novel reservoir computing framework with a generalized readout, including a nonlinear combination of reservoir variables.
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