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  1. Article ; Online: Effective Early Treatment of

    Struewing, Ian / Sienkiewicz, Nathan / Zhang, Chiqian / Dugan, Nicholas / Lu, Jingrang

    Toxins

    2022  Volume 15, Issue 1

    Abstract: Mitigating cyanotoxin production is essential to protecting aquatic ecosystems and public health. However, current harmful cyanobacterial bloom (HCB) control strategies have significant shortcomings. Because predicting HCBs is difficult, current HCB ... ...

    Abstract Mitigating cyanotoxin production is essential to protecting aquatic ecosystems and public health. However, current harmful cyanobacterial bloom (HCB) control strategies have significant shortcomings. Because predicting HCBs is difficult, current HCB control strategies are employed when heavy HCBs have already occurred. Our pilot study developed an effective HCB prediction approach that is employed before exponential cyanobacterial growth and massive cyanotoxin production can occur. We used a quantitative polymerase chain reaction (qPCR) assay targeting the toxin-encoding gene
    MeSH term(s) Microcystis/genetics ; Hydrogen Peroxide ; Microcystins/genetics ; Ecosystem ; Pilot Projects ; Hydroxyapatites
    Chemical Substances Hydrogen Peroxide (BBX060AN9V) ; Microcystins ; Hydroxyapatites
    Language English
    Publishing date 2022-12-20
    Publishing country Switzerland
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2518395-3
    ISSN 2072-6651 ; 2072-6651
    ISSN (online) 2072-6651
    ISSN 2072-6651
    DOI 10.3390/toxins15010003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Prophylactic Addition of Glucose Suppresses Cyanobacterial Abundance in Lake Water.

    Vesper, Stephen / Sienkiewicz, Nathan / Struewing, Ian / Linz, David / Lu, Jingrang

    Life (Basel, Switzerland)

    2022  Volume 12, Issue 3

    Abstract: To mitigate harmful cyanobacterial blooms (HCBs), toxic algicides have been used, but alternative methods of HCB prevention are needed. Our goal was to test the prophylactic addition of glucose to inhibit HCB development, ... ...

    Abstract To mitigate harmful cyanobacterial blooms (HCBs), toxic algicides have been used, but alternative methods of HCB prevention are needed. Our goal was to test the prophylactic addition of glucose to inhibit HCB development, using
    Language English
    Publishing date 2022-03-07
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662250-6
    ISSN 2075-1729
    ISSN 2075-1729
    DOI 10.3390/life12030385
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Possible Antagonism between

    Wymer, Larry / Vesper, Stephen / Struewing, Ian / Allen, Joel / Lu, Jingrang

    Life (Basel, Switzerland)

    2022  Volume 12, Issue 5

    Abstract: To ensure drinking-water safety, it is necessary to understand the factors that regulate harmful cyanobacterial blooms (HCBs) and the toxins they produce. One controlling factor might be any relationship between fungi and the cyanobacteria. To test this ... ...

    Abstract To ensure drinking-water safety, it is necessary to understand the factors that regulate harmful cyanobacterial blooms (HCBs) and the toxins they produce. One controlling factor might be any relationship between fungi and the cyanobacteria. To test this possibility, water samples were obtained from Harsha Lake in southwestern Ohio during the 2015, 2016, and 2017 bloom seasons, i.e., late May through September. In each water sample, the concentration of the filamentous fungus
    Language English
    Publishing date 2022-05-17
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662250-6
    ISSN 2075-1729
    ISSN 2075-1729
    DOI 10.3390/life12050742
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Periodic Addition of Glucose Suppressed Cyanobacterial Abundance in Additive Lake Water Samples during the Entire Bloom Season.

    Linz, David / Struewing, Ian / Sienkiewicz, Nathan / Steinman, Alan David / Partridge, Charlyn Gwen / McIntosh, Kyle / Allen, Joel / Lu, Jingrang / Vesper, Stephen

    Journal of water resource and protection

    2024  Volume 16, Page(s) 140–155

    Abstract: Previously, we showed that prophylactic addition of glucose to Harsha Lake water samples could inhibit cyanobacteria growth, at least for a short period of time. The current study tested cyanobacterial control with glucose for the entire Harsha Lake ... ...

    Abstract Previously, we showed that prophylactic addition of glucose to Harsha Lake water samples could inhibit cyanobacteria growth, at least for a short period of time. The current study tested cyanobacterial control with glucose for the entire Harsha Lake bloom season. Water samples (1000 ml) were collected weekly from Harsha Lake during the algal-bloom season starting June 9 and lasting until August 24, 2022. To each of two 7-liter polypropylene containers, 500 ml of Harsha Lake water was added, and the containers were placed in a controlled environment chamber. To one container labeled "Treated," 0.15 g of glucose was added, and nothing was added to the container labeled "Control." After that, three 25 ml samples from each container were collected and used for 16S rRNA gene sequencing each week. Then 1000 ml of Harsha Lake water was newly collected each week, with 500 ml added to each container, along with the addition of 0.15 g glucose to the "Treated" container. Sequencing data were used to examine differences in the composition of bacterial communities between Treated and Control containers. Treatment with glucose altered the microbial communities by 1) reducing taxonomic diversity, 2) largely eliminating cyanobacterial taxa, and 3) increasing the relative abundance of subsets of non-cyanobacterial taxa (such as Proteobacteria and Actinobacteriota). These effects were observed across time despite weekly inputs derived directly from Lake water. The addition of glucose to a container receiving weekly additions of Lake water suppressed the cyanobacterial populations during the entire summer bloom season. The glucose appears to stimulate the diversity of certain bacterial taxa at the expense of the cyanobacteria.
    Language English
    Publishing date 2024-02-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2610067-8
    ISSN 1945-3108 ; 1945-3094
    ISSN (online) 1945-3108
    ISSN 1945-3094
    DOI 10.4236/jwarp.2024.162009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Spatial and Temporal Variability of Saxitoxin-Producing Cyanobacteria in U.S. Urban Lakes.

    Jeon, Youchul / Struewing, Ian / McIntosh, Kyle / Tidd, Marcie / Webb, Laura / Ryu, Hodon / Mash, Heath / Lu, Jingrang

    Toxins

    2024  Volume 16, Issue 2

    Abstract: Harmful cyanobacterial blooms (HCBs) are of growing global concern due to their production of toxic compounds, which threaten ecosystems and human health. Saxitoxins (STXs), commonly known as paralytic shellfish poison, are a neurotoxic alkaloid produced ...

    Abstract Harmful cyanobacterial blooms (HCBs) are of growing global concern due to their production of toxic compounds, which threaten ecosystems and human health. Saxitoxins (STXs), commonly known as paralytic shellfish poison, are a neurotoxic alkaloid produced by some cyanobacteria. Although many field studies indicate a widespread distribution of STX, it is understudied relative to other cyanotoxins such as microcystins (MCs). In this study, we assessed eleven U.S. urban lakes using qPCR,
    MeSH term(s) Humans ; Saxitoxin/analysis ; Lakes/analysis ; RNA, Ribosomal, 16S/genetics ; Ecosystem ; Cyanobacteria/genetics ; Aphanizomenon/genetics
    Chemical Substances Saxitoxin (35523-89-8) ; RNA, Ribosomal, 16S
    Language English
    Publishing date 2024-02-01
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2518395-3
    ISSN 2072-6651 ; 2072-6651
    ISSN (online) 2072-6651
    ISSN 2072-6651
    DOI 10.3390/toxins16020070
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Erratum for Buse et al., "Chlorine and Monochloramine Disinfection of Legionella pneumophila Colonizing Copper and Polyvinyl Chloride Drinking Water Biofilms".

    Buse, Helen Y / Morris, Brian J / Struewing, Ian T / Szabo, Jeffrey G

    Applied and environmental microbiology

    2022  Volume 88, Issue 7, Page(s) e0022322

    Language English
    Publishing date 2022-03-09
    Publishing country United States
    Document type Journal Article ; Published Erratum
    ZDB-ID 223011-2
    ISSN 1098-5336 ; 0099-2240
    ISSN (online) 1098-5336
    ISSN 0099-2240
    DOI 10.1128/aem.00223-22
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.B 201: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
    ab Jg. 2022: Lesesaal (EG)

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  7. Article ; Online: Reconsider the burn: The transient effect of a chlorine burn on controlling opportunistic pathogens in a full-scale chloraminated engineered water system.

    Zhang, Chiqian / Sienkiewicz, Nathan / Struewing, Ian / Mistry, Jatin H / Buse, Helen / Hu, Zhiqiang / Lu, Jingrang

    The Science of the total environment

    2024  Volume 933, Page(s) 172690

    Abstract: Nitrification is a serious water-quality issue in chloraminated engineered water systems (EWSs). Nitrification is often remediated by a chlorine burn (i.e., a free‑chlorine conversion), a short-term switch from chloramination to chlorination in EWSs. ... ...

    Abstract Nitrification is a serious water-quality issue in chloraminated engineered water systems (EWSs). Nitrification is often remediated by a chlorine burn (i.e., a free‑chlorine conversion), a short-term switch from chloramination to chlorination in EWSs. Opportunistic pathogens (OPs) are the dominant infectious agents in EWSs. However, the responses of OPs to a chlorine burn are unknown. This study for the first time assessed how a chlorine burn affected OPs in a full-scale EWS. We determined the impact of a 1.5-month chlorine burn on four dominant OPs (Legionella, Mycobacterium, Pseudomonas, and Vermamoeba vermiformis) in a representative full-scale chloraminated EWS in the United States. Legionella and Mycobacterium were the most abundant OPs. In the water main, the summed concentration of the four OPs during the chlorine burn [3.27 ± 1.58 log
    Language English
    Publishing date 2024-04-24
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2024.172690
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  8. Article ; Online: Metagenomic mapping of cyanobacteria and potential cyanotoxin producing taxa in large rivers of the United States.

    Linz, David M / Sienkiewicz, Nathan / Struewing, Ian / Stelzer, Erin A / Graham, Jennifer L / Lu, Jingrang

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 2806

    Abstract: Cyanobacteria and cyanotoxin producing cyanobacterial blooms are a trending focus of current research. Many studies focus on bloom events in lentic environments such as lakes or ponds. Comparatively few studies have explored lotic environments and fewer ... ...

    Abstract Cyanobacteria and cyanotoxin producing cyanobacterial blooms are a trending focus of current research. Many studies focus on bloom events in lentic environments such as lakes or ponds. Comparatively few studies have explored lotic environments and fewer still have examined the cyanobacterial communities and potential cyanotoxin producers during ambient, non-bloom conditions. Here we used a metagenomics-based approach to profile non-bloom microbial communities and cyanobacteria in 12 major U.S. rivers at multiple time points during the summer months of 2019. Our data show that U.S. rivers possess microbial communities that are taxonomically rich, yet largely consistent across geographic location and time. Within these communities, cyanobacteria often comprise significant portions and frequently include multiple species with known cyanotoxin producing strains. We further characterized these potential cyanotoxin producing taxa by deep sequencing amplicons of the microcystin E (mcyE) gene. We found that rivers containing the highest levels of potential cyanotoxin producing cyanobacteria consistently possess taxa with the genetic potential for cyanotoxin production and that, among these taxa, the predominant genus of origin for the mcyE gene is Microcystis. Combined, these data provide a unique perspective on cyanobacteria and potential cyanotoxin producing taxa that exist in large rivers across the U.S. and can be used to better understand the ambient conditions that may precede bloom events in lotic freshwater ecosystems.
    MeSH term(s) United States ; Cyanobacteria/genetics ; Microcystis ; Rivers/microbiology ; Lakes/microbiology ; Microcystins/genetics ; Microbiota
    Chemical Substances Microcystins
    Language English
    Publishing date 2023-02-16
    Publishing country England
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-29037-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Cyanotoxin-encoding genes as powerful predictors of cyanotoxin production during harmful cyanobacterial blooms in an inland freshwater Lake: Evaluating a novel early-warning system

    Duan, Xiaodi / Zhang, Chiqian / Struewing, Ian / Li, Xiang / Allen, Joel / Lu, Jingrang

    Science of the total environment. 2022 Mar. 10,

    2022  

    Abstract: Freshwater harmful cyanobacterial blooms (HCBs) potentially produce excessive cyanotoxins, mainly microcystins (MCs), significantly threatening aquatic ecosystems and public health. Accurately predicting HCBs is thus essential to developing effective HCB ...

    Abstract Freshwater harmful cyanobacterial blooms (HCBs) potentially produce excessive cyanotoxins, mainly microcystins (MCs), significantly threatening aquatic ecosystems and public health. Accurately predicting HCBs is thus essential to developing effective HCB mitigation and prevention strategies. We previously developed a novel early-warning system that uses cyanotoxin-encoding genes to predict cyanotoxin production in Harsha Lake, Ohio, USA, in 2015. In this study, we evaluated the efficacy of the early-warning system in forecasting the 2016 HCB in the same lake. We also examined potential HCB drivers and cyanobacterial community composition. Our results revealed that the cyanobacterial community was stable at the phylum level but changed dynamically at the genus level over time. Microcystis and Planktothrix were the major MC-producing genera that thrived in June and July and produced high concentrations of MCs (peak level 10.22 μg·L⁻¹). The abundances of the MC-encoding gene cluster mcy and its transcript levels significantly correlated with total MC concentrations (before the MC concentrations peaked) and accurately predicted MC production as revealed by logistic equations. When the Microcystis-specific gene mcyG reached approximately 1.5 × 10³ copies·mL⁻¹ or when its transcript level reached approximately 2.4 copies·mL⁻¹, total MC level exceeded 0.3 μg L⁻¹ (a health advisory limit) approximately one week later (weekly sampling scheme). This study suggested that cyanotoxin-encoding genes are promising predictors of MC production in inland freshwater lakes, such as Harsha Lake. The evaluated early-warning system can be a useful tool to assist lake managers in predicting, mitigating, and/or preventing HCBs.
    Keywords Microcystis ; Planktothrix ; community structure ; early warning systems ; environment ; freshwater ; freshwater lakes ; microcystins ; multigene family ; public health ; Ohio
    Language English
    Dates of publication 2022-0310
    Publishing place Elsevier B.V.
    Document type Article
    Note Pre-press version
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2022.154568
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    In stock of ZB MED Bonn / Germany

    Z 74/341: Show issues

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  10. Article ; Online: Cyanotoxin-encoding genes as powerful predictors of cyanotoxin production during harmful cyanobacterial blooms in an inland freshwater lake: Evaluating a novel early-warning system.

    Duan, Xiaodi / Zhang, Chiqian / Struewing, Ian / Li, Xiang / Allen, Joel / Lu, Jingrang

    The Science of the total environment

    2022  Volume 830, Page(s) 154568

    Abstract: Freshwater harmful cyanobacterial blooms (HCBs) potentially produce excessive cyanotoxins, mainly microcystins (MCs), significantly threatening aquatic ecosystems and public health. Accurately predicting HCBs is thus essential to developing effective HCB ...

    Abstract Freshwater harmful cyanobacterial blooms (HCBs) potentially produce excessive cyanotoxins, mainly microcystins (MCs), significantly threatening aquatic ecosystems and public health. Accurately predicting HCBs is thus essential to developing effective HCB mitigation and prevention strategies. We previously developed a novel early-warning system that uses cyanotoxin-encoding genes to predict cyanotoxin production in Harsha Lake, Ohio, USA, in 2015. In this study, we evaluated the efficacy of the early-warning system in forecasting the 2016 HCB in the same lake. We also examined potential HCB drivers and cyanobacterial community composition. Our results revealed that the cyanobacterial community was stable at the phylum level but changed dynamically at the genus level over time. Microcystis and Planktothrix were the major MC-producing genera that thrived in June and July and produced high concentrations of MCs (peak level 10.22 μg·L
    MeSH term(s) Cyanobacteria/genetics ; Cyanobacteria Toxins ; Ecosystem ; Hexachlorobenzene ; Lakes/microbiology ; Microcystins/genetics ; Microcystis/genetics
    Chemical Substances Cyanobacteria Toxins ; Microcystins ; Hexachlorobenzene (4Z87H0LKUY)
    Language English
    Publishing date 2022-03-14
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2022.154568
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 949: Show issues Location:
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