Microorganisms
National Research Council of Italy, Water Research Institute, CNR-IRSA, 28922 Verbania Pallanza, VB, Italy.
Published: October 2024
Cyanobacterial blooms in lakes have increased in frequency and intensity over the past two decades, negatively affecting ecological and biogeochemical processes. This study focuses on the phytoplankton composition of Lake Maggiore, with a special emphasis on cyanobacteria detection through pigment composition. While microscopy is the standard method for phytoplankton identification, pigment-based methods provide broader spatiotemporal coverage. Between May and September 2023, five measurement campaigns were conducted in Lake Maggiore, collecting bio-geochemical and bio-optical data at 27 stations. The total Chlorophyll-a (TChl ) was measured, with concentrations ranging from 1.13 to 6.9 mg/m. Phytoplankton pigment composition was analyzed using High-Performance Liquid Chromatography (HPLC) and the CHEMTAX approach was applied for phytoplankton classification. The results were cross-validated using Principal Component Analysis (PCA), Hierarchical Cluster Analysis (HCA), and microscopic counts. Cyanobacteria were identified based on unique pigment markers, such as carotenoids. The HPLC-derived pigment classification results aligned well with both PCA and HCA and microscopic counts verified the accuracy of the pigment-based chemotaxonomy. The study demonstrates that pigment-based classification methods, when combined with statistical analyses, offer a reliable alternative for identifying cyanobacteria and other phytoplankton groups, with potential applications in support of remote sensing algorithm development.
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http://dx.doi.org/10.3390/microorganisms12112211 | DOI Listing |
Cancer
December 2024
Division of Public Health, Department of Family & Preventive Medicine, University of Utah School of Medicine, and Huntsman Cancer Institute, Salt Lake City, Utah, USA.
Introduction: The relations between coffee and tea consumption and head and neck cancer (HNC) incidence are unclear. With increasing global HNC burden, this study aims to examine the association between coffee, tea, and HNC.
Methods: A pooled analysis of 9548 HNC cases and 15,783 controls from 14 individual-level case-control studies was conducted from the International Head and Neck Cancer Epidemiology consortium.
Microorganisms
October 2024
National Research Council of Italy, Water Research Institute, CNR-IRSA, 28922 Verbania Pallanza, VB, Italy.
Cyanobacterial blooms in lakes have increased in frequency and intensity over the past two decades, negatively affecting ecological and biogeochemical processes. This study focuses on the phytoplankton composition of Lake Maggiore, with a special emphasis on cyanobacteria detection through pigment composition. While microscopy is the standard method for phytoplankton identification, pigment-based methods provide broader spatiotemporal coverage.
View Article and Find Full Text PDFBlood
November 2024
Mayo Clinic, Rochester, Minnesota, United States.
J Thromb Haemost
December 2024
Fondazione Istituto Ricovero e Cura a Carattere Scientifico (I.R.C.C.S.) Ca' Granda, Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi and Thrombosis Center, Milan, Italy; Department of Pathophysiology and Transplantation (DEPT), University of Milan, Milan, Italy. Electronic address:
People with bleeding disorders (PWBD) have been exposed to the risk of developing chronic viral hepatitis and cirrhosis after replacement therapy. Today, the advent of new pharmacologic strategies for the control of hemostasis and the efficacious antiviral therapies against hepatitis C virus and hepatitis B virus have significantly reduced this risk. However, the definitive success for liver health in this clinical setting is also influenced by other factors, such as the severity of liver disease at the time of hepatitis B virus/hepatitis C virus antiviral therapy and the exposure to highly prevalent factors of chronic liver damage (eg, metabolic dysfunction and/or alcohol) that can cause a residual risk of complications such as hepatocellular carcinoma, portal hypertension, and liver insufficiency.
View Article and Find Full Text PDFHeart Lung
October 2024
Division of Neuroscience Critical Care, Departments of Neurology, Neurosurgery, and Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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