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Impact of trace metal supplementation on anaerobic biological methanation under hydrogen and carbon dioxide starvation.
NPJ Biofilms Microbiomes
January 2025
Department of Biology, University of Padua, via U. Bassi 58/b, 35131, Padova, Italy.
Biomethanation is a crucial process occurring in natural and engineered systems which can reduce carbon dioxide to methane impacting the global carbon cycle. However, little is known about the effect of on-and-off gaseous provision and micronutrients on bioconversion. Here, anaerobic microbiomes underwent intermittent feeding with incremental starvations and selective metal supplementation to assess the impact of hydrogen and carbon dioxide availability on microbial physiology.
View Article and Find Full Text PDFIdentifying Bacteria Responsible for Non-Sulphate-Based Hydrogen Sulphide Production in Aquaculture.
Environ Microbiol
January 2025
DTU Aqua, Section for Aquaculture, Technical University of Denmark, Hirtshals, Denmark.
The unintended microbiological production of hydrogen sulphide (HS) poses a significant challenge in engineered systems, including sewage treatment plants, landfills and aquaculture systems. Although sulphur-rich amino acids and other substrates conducive to non-sulphate-based HS production are frequently present, the capacity and potential of various microorganisms to perform sulphate-free HS production remain unclear. In this study, we identify the identity, activity and genomic characteristics of bacteria that degrade cysteine to produce HS in anaerobic enrichment bioreactors seeded with material from aquaculture systems.
View Article and Find Full Text PDFOral amoxicillin treatment disrupts the gut microbiome and metabolome without interfering with luminal redox potential in the intestine of Wistar Han rats.
FEMS Microbiol Ecol
January 2025
National Food Institute, Technical University of Denmark, Kemitorvet, 2800 Kongens Lyngby, Denmark.
Oral antibiotic treatment is well known to be one of the main factors affecting gut microbiota composition by altering bacterial diversity. It decreases the abundance of butyrate-producing bacteria such as Lachnospiraceae and Ruminococcaceae, while increasing abundance of Enterobacteriaceae. The recovery time of commensal bacteria post-antibiotic treatment varies among individuals, and often, complete recovery is not achieved.
View Article and Find Full Text PDFLeaky Gut Syndrome Along With Clostridium perfringens Bacteremia in a Neurodegenerative Disease Patient: A Case Report.
Cureus
December 2024
Department of Internal Medicine, Hasegawa Hospital, Mitaka, JPN.
Leaky gut syndrome (LGS) is caused by intestinal epithelial injury and increased intestinal permeability due to a variety of factors, including chronic stress, inflammatory bowel disease, diabetes, surgery, and chemotherapy, resulting in an increased influx of matter from the intestinal lumen causing constipation and bacteremia. To our knowledge, this is the first known case of LGS along with () bacteremia in a neurodegenerative disease patient. The patient was an 81-year-old male with a history of Alzheimer's disease, cerebral infarction, and diverticulitis in a psychiatric hospital, fed via a nasogastric tube.
View Article and Find Full Text PDFEffects of a β-glucan-enriched diet on biomarkers of oxidative stress, energy metabolism and lysosomal function in muscle tissue of European grayling ( L.).
J Vet Res
December 2024
Institute of Biology, Pomeranian University in Słupsk, 76-200 Słupsk, Poland.
Introduction: The grayling ( L.) has several advantages over other fish species that make it attractive for aquaculture and invest it with importance for food security. The study assessed the effects of a β-glucan-enriched diet on biomarkers of oxidative stress, energy metabolism and lysosomal function in muscle tissue of European grayling ( L.
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