Project description:The increased urban pressures are often associated with specialization of microbial communities. Microbial communities being a critical player in the geochemical processes, makes it important to identify key environmental parameters that influence the community structure and its function.In this proect we study the influence of land use type and environmental parameters on the structure and function of microbial communities. The present study was conducted in an urban catchment, where the metal and pollutants levels are under allowable limits. The overall goal of this study is to understand the role of engineered physicochemical environment on the structure and function of microbial communities in urban storm-water canals.
Project description:The increased urban pressures are often associated with specialization of microbial communities. Microbial communities being a critical player in the geochemical processes, makes it important to identify key environmental parameters that influence the community structure and its function.In this proect we study the influence of land use type and environmental parameters on the structure and function of microbial communities. The present study was conducted in an urban catchment, where the metal and pollutants levels are under allowable limits. The overall goal of this study is to understand the role of engineered physicochemical environment on the structure and function of microbial communities in urban storm-water canals. Microbial community structure was determined using PhyoChio (G3)
Project description:This study explores the impact of lifestyle and environment on gene expression through whole transcriptome profiling of peripheral blood samples in Fijian population (native Melanesians and Indians) living in the rural and urban areas. 41 individuals (14 urban Melanesians, 10 rural Melanesians and 17 urban Indians) of both gender were sampled under informed consents. Only healthy individuals aged between 18 and 65 were sampled. RNA from each sample was hybridized to an Illumina array. No replicates were done in this study
Project description:Legionnaire’s Disease is a growing concern for the United States and Europe, with disease incidences rising 6-fold since 2002. These recorded cases are increasingly associated with antibiotic resistant Legionella pneumophila, the causative agent of Legionnaire’s Disease and overall Legionellosis. With this, the need to study L. pneumophilainfections has never been greater. Current methodology for Legionella pneumophila infection studies often revolves around either artificial administration using intranasal or intratracheal delivery, semi-authentic delivery using bioaerosols and individual delivery systems (i.e. nose cones), or the burgeoning field of authentic exposure scenarios using aerosol generating showerhead devices. Here, we developed an alternative method using a Madison Aerosol Chamber as a means of generating and delivering bioaerosols in mice. We show that bioaerosol delivery using the Aerosol Exposure Chamber is very effective at exposing mice to various doses of L. pneumophila. RNASeq analyses revealed a robust immune response to bioaerosol delivered L. pneumophila comprising of activations of classical markers of infection and inflammation, including Cxcl and Ccl family genes and Il-1β. Similar gene expression profiles were observed when animals were intranasally exposed to L. pneumophila. Intranasal delivery resulted in a shorter duration of activation of several genes, indicating a lack of realistic infection response. Taken together, this evidence shows that our system delivers similar, if not better, results than intranasal inoculation while allowing researchers to study bioaerosol generation and delivery mechanisms simultaneously, critical factors for studying Legionella pneumophila infection. Such a new approach will allow for more accurate investigations to understand the effects of inhaling to Legionella contaminated drinking water.
Project description:We are investigating the mRNA expression profiles of human lung cells to gaseous urban mixtures We used microarrays to compare the global mRNA expression profiles upon response to fresh against aged urban mix Keywords: dose A549 cells were grown to confluency and exposed to fresh urban mix, aged urban mix, or mock-treated. RNA was collected 9 hrs after exposure.
Project description:The Study Of Urban and Rural Crohn disease Evolution (SOURCE, n=380) characterized exposures, diet, and host and microbial factors in rural and urban Chinese controls and newly diagnosed Crohn Disease (CD), and in treatment-naïve Israeli CD and controls. We considered diet-omics domains simultaneously to detect complex interactions in the gut to prioritize potential beneficial and pathogenic factors.
Project description:These data are raw mass spec files and corresponding mzXML files for time series mass spec data from three urban lakes at Roger Williams Park in Providence, RI. Data files are described by lake location (Pleasure, Polo, Cunliff) and date of sample collection. The Microcystis _Cells file is a positive control of a cultivated strain from the UTEX culture collection (M. aeruginosa UTEX #LB2385) - a known microcystin-LR producer. Information on LC-MS/MS method can be found in the published work.
Project description:The increased urban pressures are often associated with specialization of microbial communities. Microbial communities being a critical player in the geochemical processes, makes it important to identify key environmental parameters that influence the community structure and its function.In this proect we study the influence of land use type and environmental parameters on the structure and function of microbial communities. The present study was conducted in an urban catchment, where the metal and pollutants levels are under allowable limits. The overall goal of this study is to understand the role of engineered physicochemical environment on the structure and function of microbial communities in urban storm-water canals. Water and sediment samples were collected after a rain event from Sungei Ulu Pandan watershed of >25km2, which has two major land use types: Residential and industrial. Samples were analyzed for physicochemical variables and microbial community structure and composition. Functional gene abundance was determined using GeoChip.