AI Article Synopsis

  • The study focused on using a molecular protocol to find leptospiral DNA in water samples from a peri-urban area in Petrópolis, Brazil.
  • A multiplex PCR method with specific primers was employed, and 3 out of 100 water samples tested positive for leptospires.
  • The findings demonstrated that multiplex PCR effectively detects both saprophytic and pathogenic leptospires, providing a simpler alternative to traditional detection methods.

Article Abstract

The aim of this study was to apply a molecular protocol to detect leptospiral DNA in environmental water samples. The study was carried out in a peri-urban settlement in Petrópolis, state of Rio de Janeiro. A multiplex PCR method employing the primers LipL32 and 16SrRNA was used. Three out of 100 analysed samples were positive in the multiplex PCR, two were considered to have saprophytic leptospires and one had pathogenic leptospires. The results obtained supported the idea that multiplex PCR can be used to detect Leptospira spp in water samples. This method was also able to differentiate between saprophytic and pathogenic leptospires and was able to do so much more easily than conventional methodologies.

Download full-text PDF

Source
http://dx.doi.org/10.1590/s0074-02762010000300020DOI Listing

Publication Analysis

Top Keywords

water samples
12
multiplex pcr
12
environmental water
8
pathogenic leptospires
8
multiplex
4
multiplex pcr-based
4
pcr-based detection
4
detection leptospira
4
leptospira environmental
4
samples
4

Similar Publications

The hydrologic benefits of catchment-scale implementation of stormwater control measures (SCMs) in mitigating the adverse effects of urbanization are well established. Nevertheless, recent studies indicate that the Unified Stormwater Sizing Criteria (USSC) regulations, mandating the combined use of distributed and storage stormwater controls, do not protect channel stability, despite their effectiveness in reducing runoff from impervious surfaces. The USSC are the basis of SCM design in 11 U.

View Article and Find Full Text PDF

Impacts of climate change on storm event-based flow regime and channel stability of urban headwater streams.

J Environ Manage

January 2025

Tetra Tech, Inc., P.O. Box 14409, Research Triangle Park, NC, 27709, United States. Electronic address:

Due to the recent improved availability of global and regional climate change (CC) models and associated data, the projected impact of CC on urban stormwater management is well documented. However, most studies are based on simplified design storm analysis and unit-area runoff models; evaluations of the long-term, continuous hydrologic response of extensive stormwater control measures (SCM) implementation under future CC scenarios are limited. Moreover, channel stability in response to CC is seldom evaluated due to the input data required to develop a long-term, continuous sediment transport model.

View Article and Find Full Text PDF

Spatial occurrence of emerging contaminants in rivers and wastewater. Analysis of environmental and human risks.

Environ Toxicol Chem

January 2025

Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra de Química Analítica I, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL), Santa Fe, Argentina.

This study assesses the occurrence of emerging contaminants (ECs) from agricultural and livestock production activities along the Salado River (Santa Fe province, Argentina). Of the 23 ECs studied, 8 were detected and quantified in river and wastewater samples, including ciprofloxacin, enrofloxacin, chlorpyrifos-methyl, albendazole, fenbendazole, levamisole, diazepam, and thiamethoxam. In river samples, the highest concentrations corresponded to ciprofloxacin, chlorpyrifos-methyl, and enrofloxacin.

View Article and Find Full Text PDF

Eutrophication is one of the most relevant concerns due to the risk to water supply and food security. Nitrogen and phosphorus chemical species concentrations determined the risk and magnitude of eutrophication. These analyses are even more relevant in basins with intensive agriculture due to agrochemical discharges.

View Article and Find Full Text PDF

Hydrated cable bacteria exhibit protonic conductivity over long distances.

Proc Natl Acad Sci U S A

January 2025

Electronics Sciences and Technology Division, United States Naval Research Laboratory, Washington, DC 20375.

This study presents the direct measurement of proton transport along filamentous , or cable bacteria. Cable bacteria are filamentous multicellular microorganisms that have garnered much interest due to their ability to serve as electrical conduits, transferring electrons over several millimeters. Our results indicate that cable bacteria can also function as protonic conduits because they contain proton wires that transport protons at distances >100 µm.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!