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Combined application of metagenomics and FEAST to trace sources of microbial eukaryotic contamination in the Pasig-Marikina-San Juan (PAMARISAN) river system in Metro Manila, Philippines.
Environ Monit Assess
January 2025
Pathogen-Host-Environment Interactions Research Laboratory, Institute of Biology, College of Science, University of the Philippines Diliman, 1101, Quezon City, Philippines.
Microbial eukaryotes are vital to global microbial diversity, but there is limited information about their composition and sources in contaminated surface waters. This study examined the pathogens and potential sources of microbial eukaryotic communities in polluted sink environments using the 18S rDNA amplicon sequencing combined with the fast expectation-maximization for microbial source tracking (FEAST) program. Six sampling sites were selected along the Pasig-Marikina-San Juan (PAMARISAN) River System, representing different locations within the waterway and classified as sinks (n = 12), whereas animal fecal samples collected from various farms were classified as sources (n = 29).
View Article and Find Full Text PDF[Visualization of flagella and its applications in research on flagellar functions].
Sheng Wu Gong Cheng Xue Bao
January 2025
Medical Genetics Center, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.
Flagella are important protein structures on the cell surface of bacteria and the main appendage for bacterial swimming. Flagella play a crucial role in bacterial motility, chemotaxis, pathogenicity, and environmental sensing. With the development of microscopic tracking technology and flagellum visualization tools, new forms of flagellar motility and increasing roles of flagella in the physiological activities of bacteria have been discovered.
View Article and Find Full Text PDFA female sterilization method for use in field-based behavioral studies of the invasive Asian longhorned beetle (Anoplophora glabripennis).
J Insect Sci
January 2025
Northern Research Station, U.S. Forest Service, United States Department of Agriculture, Hamden, CT, USA.
Asian longhorned beetle (Anoplophora glabripennis Motschulsky), a wood borer (Coleoptera: Cerambycidae) native to China, has been unintentionally and repeatedly introduced to North American and European landscapes as a stow-away in the wood packing material commonly used in international trade. Asian longhorned beetle causes extensive damage and mortality in multiple deciduous tree species and in response, countries in both North America and Europe have adopted policies of eradication. Models that integrate patterns of Asian longhorned beetle dispersal with records of infested trees are critical in optimizing survey and eradication efforts and tracking eradication progress.
View Article and Find Full Text PDFNeuronal mechanisms of nociceptive-evoked gamma-band oscillations in rodents.
Neuron
January 2025
State Key Laboratory of Cognitive Science and Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, China. Electronic address:
Gamma-band oscillations (GBOs) in the primary somatosensory cortex (S1) play key roles in nociceptive processing. Yet, one crucial question remains unaddressed: what neuronal mechanisms underlie nociceptive-evoked GBOs? Here, we addressed this question using a range of somatosensory stimuli (nociceptive and non-nociceptive), neural recording techniques (electroencephalography in humans and silicon probes and calcium imaging in rodents), and optogenetics (alone or simultaneously with electrophysiology in mice). We found that (1) GBOs encoded pain intensity independent of stimulus intensity in humans, (2) GBOs in S1 encoded pain intensity and were triggered by spiking of S1 interneurons, (3) parvalbumin (PV)-positive interneurons preferentially tracked pain intensity, and critically, (4) PV S1 interneurons causally modulated GBOs and pain-related behaviors for both thermal and mechanical pain.
View Article and Find Full Text PDFGrowth kinetics and population density of a laboratory colony of the poultry red mite (Dermanyssus gallinae) established in Japan.
J Vet Med Sci
January 2025
Department of Molecular and Cellular Parasitology, Graduate School of Medical Sciences, Kitasato University.
Article Synopsis
- The poultry red mite (PRM) poses a significant threat to the poultry industry due to its blood-feeding habits and role as a vector for pathogens.
- The study successfully established a stable PRM laboratory colony, allowing for consistent research on mite behavior and drug discovery amidst growing acaricidal resistance.
- Growth data showed that PRM population increased significantly over 28 days, demonstrating effective maintenance conditions for future studies on pest control strategies.
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