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Träfflista för sökning "WFRF:(Förlin Lars 1950 ) ;lar1:(gu);pers:(Förlin Lars 1950);pers:(Gunnarsson Lina Maria 1977)"

Sökning: WFRF:(Förlin Lars 1950 ) > Göteborgs universitet > Förlin Lars 1950 > Gunnarsson Lina Maria 1977

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  • Albertsson, Eva, 1979-, et al. (författare)
  • Proteomic analyses indicate induction of hepatic carbonyl reductase/20beta-hydroxysteroid dehydrogenase B in rainbow trout exposed to sewage effluent.
  • 2007
  • Ingår i: Ecotoxicology and environmental safety. - 0147-6513. ; 68:1, s. 33-9
  • Tidskriftsartikel (refereegranskat)abstract
    • Proteomic analyses were performed to identify regulated liver proteins in rainbow trout (Oncorhynchus mykiss) caged upstream and downstream from a sewage treatment works (STW). Two-dimensional gel electrophoresis, image analysis and FT-ICR mass-spectrometry revealed four regulated protein spots. The three down-regulated spots contained betaine aldehyde dehydrogenase, lactate dehydrogenase and an unidentified protein respectively. The only up-regulated spot consisted of both mitochondrial ATP synthase alpha-subunit and carbonyl reductase/20beta-hydroxysteroid dehydrogenase (CR/20beta-HSD). Further studies using quantitative PCR revealed a 13.5-fold induction of CR/20beta-HSD B mRNA following STW effluent exposure. The CR/20beta-HSD B gene was not regulated by 17alpha-ethinylestradiol, suggesting that its induction downstream from the STW is due to other factors than exposure to estrogens. Image analysis was initially performed on four gels from each group. These analyses suggested 15 regulated spots. However, validation of the 15 spots by increasing the number of replicates confirmed only four regulated spots. Hence, the present study also demonstrates the need for sufficient biological/technical replication in the interpretation of proteomic data.
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  • Gunnarsson, Lina-Maria, 1977-, et al. (författare)
  • Pharmaceutical Industry Effluent Diluted 1:500 Affects Global Gene Expression, Cytochrome P4501A Activity and Plasma Phosphate in Fish.
  • 2009
  • Ingår i: Environmental toxicology and chemistry / SETAC. - 0730-7268. ; 28:12, s. 2639-2647
  • Tidskriftsartikel (refereegranskat)abstract
    • Patancheru, near Hyderabad, India, is a major production site for the global bulk drug market. Approximately 90 manufacturers send their wastewater to a common treatment plant in Patancheru. Extraordinary high levels of a wide range of pharmaceuticals have recently been demonstrated in the treated effluent. As little as 0.2% of this effluent can strongly reduce the growth rate of tadpoles, but the underlying mechanisms of toxicity are not known. To begin addressing how the effluent affects aquatic vertebrates, rainbow trout (Oncorhynchus mykiss) were exposed to 0.2% effluent for five days. Several physiological endpoints, together with effects on global hepatic gene expression patterns, were analyzed. The exposed fish showed both an induction of hepatic cytochrome P450 1A (CYP1A) gene expression, as well as enzyme activity. Clinical blood chemistry analyses revealed an increase in plasma phosphate levels, which in humans indicates impaired kidney function. Several oxidative stress-related genes were induced in the livers; however, no significant changes in antioxidant enzyme activities or in the hepatic glutathione levels were found. Furthermore, estrogen-regulated genes were slightly up-regulated following exposure, and moderate levels of estriol were detected in the effluent. The present study identifies changes in gene expression triggered by exposure to a high dilution of the effluent, supporting the hypothesis that these fish are responding to chemical exposure. The pattern of regulated genes may contribute to the identification of mechanisms of sub-lethal toxicity, as well as illuminate possible causative agents.
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  • Larsson, D. G. Joakim, 1969-, et al. (författare)
  • Release of active pharmaceutical ingredients from Indian bulk drug manufacture – environmental fate and effects on antibiotic resistance development, microbial ecosystems and vertebrate physiology
  • 2008
  • Ingår i: 2008 Society of Environmental Toxicology and Chemistry, November 16-20, Tampa, USA.
  • Konferensbidrag (refereegranskat)abstract
    • Last year, we published a paper showing extraordinary high levels of several drugs in treated effluent from a plant receiving process water from about 90 bulk drug manufacturers from the Hyderabad region in India. Particularly, the levels of various fluoroquinolones (up to 31 mg/L) called for more information on the potential development of antibiotic resistance of exposed bacteria, as well as potential ecological effects on microbial ecosystems. In this study we will present the first characterization of 93 strains of bacteria sampled inside the treatment facility for their sensitivity/resistance to 39 different antibiotics. Furthermore, controlled exposure experiments suggest that the treated effluent affects the functional structure of natural freshwater microbial communities at a dilution of 1:1000. Short to medium-term exposure experiments with frogs and fish demonstrate sublethal effects of the treated effluent at similar dilutions, suggesting that expected environmental effects are not restricted to disturbed microorganism communities. Data on the fate of different pharmaceuticals in a gradient up and downstream from the treatment facility will be presented, as well as levels in drinking water wells in seven nearby villages, showing a transport of drugs via the groundwater. We conclude that the environmental impact of drug production in the Hyderabad region is of great environmental concern. We will also present summary data on the origin of active substances present in pharmaceutical products on the Swedish market, implying an international responsibility for improving the environmental pollution situation related to bulk drug production in India.
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