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  1. Article ; Online: Assessment of the in vitro acaricidal activity of Bravecto

    Takano, Kotaro / Carver, Scott / Vermaak, Yolandi / Fischer, Katja / Harvey, Robert J / Mounsey, Kate E

    Parasites & vectors

    2024  Volume 17, Issue 1, Page(s) 194

    Abstract: Background: Sarcoptic mange is a serious animal welfare concern in bare-nosed wombats (Vombatus ursinus). Fluralaner (Bravecto: Methods: Sarcoptes scabiei were sourced from experimentally infested pigs. In vitro assays were performed to determine the ...

    Abstract Background: Sarcoptic mange is a serious animal welfare concern in bare-nosed wombats (Vombatus ursinus). Fluralaner (Bravecto
    Methods: Sarcoptes scabiei were sourced from experimentally infested pigs. In vitro assays were performed to determine the lethal concentration (LC
    Results: All compounds were highly effective at killing mites in vitro. The LC
    Conclusions: These results confirm the acaricidal properties of Bravecto, demonstrate acaricidal properties of Orange Power and support the potential suitability of Orange Power and its active constituents as a diluent for Bravecto. As well as killing mites via direct exposure, Orange Power could potentially enhance the topical delivery of Bravecto to wombats by increasing drug penetration in hyperkeratotic crusts. Further research evaluating the physiochemical properties and modes of action of Orange Power and its constituents as a formulation vehicle would be of value.
    MeSH term(s) Animals ; Sarcoptes scabiei/drug effects ; Acaricides/pharmacology ; Isoxazoles/pharmacology ; Scabies/drug therapy ; Scabies/parasitology ; Plant Oils/pharmacology ; Plant Oils/chemistry ; Acyclic Monoterpenes/pharmacology ; Swine ; Limonene/pharmacology ; Limonene/chemistry ; Terpenes/pharmacology ; Terpenes/chemistry ; Cyclohexenes/pharmacology ; Cyclohexenes/chemistry ; Lethal Dose 50
    Chemical Substances Acaricides ; A1443 compound ; Isoxazoles ; Plant Oils ; orange oil (AKN3KSD11B) ; citral (T7EU0O9VPP) ; Acyclic Monoterpenes ; Limonene (9MC3I34447) ; Terpenes ; Cyclohexenes
    Language English
    Publishing date 2024-04-25
    Publishing country England
    Document type Journal Article
    ZDB-ID 2409480-8
    ISSN 1756-3305 ; 1756-3305
    ISSN (online) 1756-3305
    ISSN 1756-3305
    DOI 10.1186/s13071-024-06275-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Establishing a ready biodegradability test system using OxiTop® to evaluate chemical fate in a realistic environment.

    Takekoshi, Saki / Takano, Kotaro / Matoba, Yoshihide / Mukumoto, Makiko / Tachibana, Akira

    Journal of pesticide science

    2022  Volume 47, Issue 1, Page(s) 35–42

    Abstract: The purpose of this study is to propose the use of OxiTop® for measuring biochemical oxygen demand (BOD) under the Japanese Chemical Substances Control Law in order to properly evaluate chemical fate in a real environment. In our previous study, the ... ...

    Abstract The purpose of this study is to propose the use of OxiTop® for measuring biochemical oxygen demand (BOD) under the Japanese Chemical Substances Control Law in order to properly evaluate chemical fate in a real environment. In our previous study, the biodegradation of test chemicals was accelerated by both adsorbing the chemical to silica gel with chloroform and increasing the medium volume from 300 to 3900 mL in the OECD 301F test using a coulometer. However, the biodegradability of these chemicals could not be evaluated based on BOD due to chloroform residue in the silica gel, or the medium volume could not be increased further due to the oven size of the coulometer. In this study, we established an evaluation system using OxiTop® based on BOD by increasing the medium volume to 9000 mL. Based on triplicate testing, increasing the medium volume accelerated biodegradation and decreased variation in BOD.
    Language English
    Publishing date 2022-04-05
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 437867-2
    ISSN 1348-589X ; 2187-0365 ; 0916-9962 ; 0385-1559
    ISSN 1348-589X ; 2187-0365 ; 0916-9962 ; 0385-1559
    DOI 10.1584/jpestics.D21-046
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Pharmacokinetic and pharmacodynamic considerations for treating sarcoptic mange with cross-relevance to Australian wildlife.

    Takano, Kotaro / de Hayr, Lachlan / Carver, Scott / Harvey, Robert J / Mounsey, Kate E

    International journal for parasitology. Drugs and drug resistance

    2023  Volume 21, Page(s) 97–113

    Abstract: Sarcoptes scabiei is the microscopic burrowing mite responsible for sarcoptic mange, which is reported in approximately 150 mammalian species. In Australia, sarcoptic mange affects a number of native and introduced wildlife species, is particularly ... ...

    Abstract Sarcoptes scabiei is the microscopic burrowing mite responsible for sarcoptic mange, which is reported in approximately 150 mammalian species. In Australia, sarcoptic mange affects a number of native and introduced wildlife species, is particularly severe in bare-nosed wombats (Vombatus ursinus) and an emerging issue in koala and quenda. There are a variety of acaricides available for the treatment of sarcoptic mange which are generally effective in eliminating mites from humans and animals in captivity. In wild populations, effective treatment is challenging, and concerns exist regarding safety, efficacy and the potential emergence of acaricide resistance. There are risks where acaricides are used intensively or inadequately, which could adversely affect treatment success rates as well as animal welfare. While reviews on epidemiology, treatment strategies, and pathogenesis of sarcoptic mange in wildlife are available, there is currently no review evaluating the use of specific acaricides in the context of their pharmacokinetic and pharmacodynamic properties, and subsequent likelihood of emerging drug resistance, particularly for Australian wildlife. This review critically evaluates acaricides that have been utilised to treat sarcoptic mange in wildlife, including dosage forms and routes, pharmacokinetics, mode of action and efficacy. We also highlight the reports of resistance of S. scabiei to acaricides, including clinical and in vitro observations.
    MeSH term(s) Animals ; Humans ; Scabies/drug therapy ; Scabies/veterinary ; Scabies/epidemiology ; Animals, Wild ; Acaricides/therapeutic use ; Acaricides/pharmacology ; Australia/epidemiology ; Sarcoptes scabiei ; Mammals
    Chemical Substances Acaricides
    Language English
    Publishing date 2023-03-05
    Publishing country Netherlands
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 2751132-7
    ISSN 2211-3207 ; 2211-3207
    ISSN (online) 2211-3207
    ISSN 2211-3207
    DOI 10.1016/j.ijpddr.2023.02.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Metagenomic analysis of ready biodegradability tests to ascertain the relationship between microbiota and the biodegradability of test chemicals.

    Takano, Yoshinari / Takekoshi, Saki / Takano, Kotaro / Matoba, Yoshihide / Mukumoto, Makiko / Shirai, Osamu

    Journal of pesticide science

    2023  Volume 48, Issue 2, Page(s) 35–46

    Abstract: Ready biodegradability tests conducted in accordance with the Organisation for Economic Co-operation and Development guidelines (test 301C or test 301F) are performed using activated sludge (AS) prepared by the Chemicals Evaluation and Research Institute ...

    Abstract Ready biodegradability tests conducted in accordance with the Organisation for Economic Co-operation and Development guidelines (test 301C or test 301F) are performed using activated sludge (AS) prepared by the Chemicals Evaluation and Research Institute (AS-CERI) or that taken from a sewage treatment plant (AS-STP). It had been reported that AS-CERI had lower activity than AS-STP in biodegrading test chemicals, and that biodegradation was accelerated by increasing the volume of the test medium. However, these phenomena have not been clarified from the perspective of the microbiota. In this study, using metagenomic analysis, we first showed that the microbiota of AS-CERI was biased in its distribution of phyla, less diverse, and had greater lot-to-lot variability than that of AS-STP. Second, after cultivation for a long period of time, the microbiota of AS-STP and AS-CERI became more similar to each other in terms of community structure. Third, determining degraders of test substances when each substance was actively biodegraded was found to be an effective approach. Finally, we clarified experimentally that a large volume of test medium increased the number of species that could degrade test substances in the condition where the initial concentrations of each substance and AS-STP were kept constant.
    Language English
    Publishing date 2023-06-08
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 437867-2
    ISSN 1348-589X ; 2187-0365 ; 0916-9962 ; 0385-1559
    ISSN 1348-589X ; 2187-0365 ; 0916-9962 ; 0385-1559
    DOI 10.1584/jpestics.D22-067
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Investigation of OECD 301F ready biodegradability test to evaluate chemical fate in a realistic environment.

    Takekoshi, Saki / Takano, Kotaro / Matoba, Yoshihide / Sato, Masayuki / Tachibana, Akira

    Journal of pesticide science

    2021  Volume 46, Issue 2, Page(s) 143–151

    Abstract: The OECD 301F ready biodegradability test has been approved for use under the Japanese Chemical Substances Control Law since 2018. This test uses activated sludge obtained from a sewage treatment plant instead of the standard activated sludge used for ... ...

    Abstract The OECD 301F ready biodegradability test has been approved for use under the Japanese Chemical Substances Control Law since 2018. This test uses activated sludge obtained from a sewage treatment plant instead of the standard activated sludge used for the 301C test. In addition, the test is allowed to add an inert support or emulsifying agent, and/or to change the volume of the test medium. In this study, we first confirmed that the standard sludge had lower biodegradation activities than the sludge taken from a sewage treatment plant. Second, we showed that biodegradation percentages were increased by adding suitable amounts of silica gel or Tween 80. Third, we found that the biodegradations were accelerated by only increasing the medium volume under the conditions that concentrations of chemical, silica gel, and sludge were held constant. These findings are expected to contribute to the appropriate evaluation of chemical fate in a realistic environment.
    Language English
    Publishing date 2021-04-23
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 437867-2
    ISSN 1348-589X ; 2187-0365 ; 0916-9962 ; 0385-1559
    ISSN 1348-589X ; 2187-0365 ; 0916-9962 ; 0385-1559
    DOI 10.1584/jpestics.D20-050
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Drug dose and animal welfare: important considerations in the treatment of wildlife.

    Mounsey, Kate / Harvey, Robert J / Wilkinson, Victoria / Takano, Kotaro / Old, Julie / Stannard, Hayley / Wicker, Leanne / Phalen, David / Carver, Scott

    Parasitology research

    2022  Volume 121, Issue 3, Page(s) 1065–1071

    Abstract: A recent publication in Parasitology Research by (Old et al. Parasitol Res 120:1077-1090, 2021) raises the topical and often controversial issue of the treatment of wildlife by personnel with little or no formal scientific training (e.g. wildlife carers). ...

    Abstract A recent publication in Parasitology Research by (Old et al. Parasitol Res 120:1077-1090, 2021) raises the topical and often controversial issue of the treatment of wildlife by personnel with little or no formal scientific training (e.g. wildlife carers). In a valuable contribution to the subject, Old and colleagues document a wide range of topical (pour-on) application doses and frequencies of moxidectin (Cydectin®) administered in situ to bare-nosed wombats (Vombatus ursinus) by members of the wildlife carer/treater community in southeast Australia to treat sarcoptic mange disease. This treatment occurred under minor use permits issued by the Australian Pesticides and Veterinary Management Authority (APVMA). These permits do not require veterinary supervision, although carers are registered and are expected to comply with the guidelines of this permit.The prevalence and severity of sarcoptic mange in wildlife is influenced by a variety of factors including mite biology, environmental conditions, population density, animal behaviour and immune susceptibility (Browne et al. Bioscience, 2021). In bare-nosed wombats, combinations of these elements play a substantial role in making the treatment of an already difficult disease more complex. (Moroni et al. Parasit Vectors 13:471, 2020) comment that any pharmacological treatment of free-ranging wildlife must consider these factors when assessing their feasibility and implications, especially in the context of emerging drug resistance and potential long-term ecological impacts. As individuals with significant interest in sarcoptic mange and representing a range of professional research and veterinary expertise, we see value in providing expert commentary on this issue.
    MeSH term(s) Animal Welfare ; Animals ; Animals, Wild/parasitology ; Australia/epidemiology ; Humans ; Pharmaceutical Preparations ; Sarcoptes scabiei ; Scabies/veterinary
    Chemical Substances Pharmaceutical Preparations
    Language English
    Publishing date 2022-02-11
    Publishing country Germany
    Document type Letter
    ZDB-ID 284966-5
    ISSN 1432-1955 ; 0932-0113 ; 0044-3255
    ISSN (online) 1432-1955
    ISSN 0932-0113 ; 0044-3255
    DOI 10.1007/s00436-022-07460-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Correction to: Drug dose and animal welfare: important considerations in the treatment of wildlife.

    Mounsey, Kate / Harvey, Robert J / Wilkinson, Victoria / Takano, Kotaro / Old, Julie / Stannard, Hayley / Wicker, Leanne / Phalen, David / Carver, Scott

    Parasitology research

    2022  Volume 121, Issue 5, Page(s) 1551

    Language English
    Publishing date 2022-03-01
    Publishing country Germany
    Document type Published Erratum
    ZDB-ID 284966-5
    ISSN 1432-1955 ; 0932-0113 ; 0044-3255
    ISSN (online) 1432-1955
    ISSN 0932-0113 ; 0044-3255
    DOI 10.1007/s00436-022-07472-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Drug dose and animal welfare: important considerations in the treatment of wildlife

    Mounsey, Kate / Harvey, Robert J. / Wilkinson, Victoria / Takano, Kotaro / Old, Julie / Stannard, Hayley / Wicker, Leanne / Phalen, David / Carver, Scott

    Parasitology research. 2022 Mar., v. 121, no. 3

    2022  

    Abstract: A recent article published in Parasitology Research describes the use of high-dose moxidectin (Cydectin®) by wildlife carers for the treatment of sarcoptic mange in bare-nose wombats (Vombatus ursinus). We provide additional perspectives on this topic, ... ...

    Abstract A recent article published in Parasitology Research describes the use of high-dose moxidectin (Cydectin®) by wildlife carers for the treatment of sarcoptic mange in bare-nose wombats (Vombatus ursinus). We provide additional perspectives on this topic, including consideration of the pharmacokinetics, mode of action and efficacy of moxidectin. The volumes of moxidectin applied by some carers exceeded the manufacturer recommended dose by up to 100-fold, although there appeared to be no association between dose and clinical efficacy. The safety of these extremely high doses has not been scientifically evaluated and we raise concerns regarding the potential for severe adverse events that may be undetected in free-living animals. The inadvertent spillage of large volumes of pour-on acaricides may also have ecotoxic impacts. Reports of treatment failure prompting the perceived need for higher doses are also concerning. The causal factors behind treatment failures should be investigated as a matter of priority, as it is possible that moxidectin resistance is emerging in Sarcoptes scabiei mites infesting wombats. We welcome the insights of individuals actively engaged in the treatment of this debilitating disease of wombats and encourage further discourse, reflecting both the lived experience and evidence-based practice.
    Keywords Sarcoptes scabiei ; Vombatus ursinus ; animal welfare ; evidence-based practice ; mechanism of action ; moxidectin ; parasitology ; pharmacokinetics ; research ; scabies ; wildlife
    Language English
    Dates of publication 2022-03
    Size p. 1065-1071.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    Note Letter
    ZDB-ID 284966-5
    ISSN 1432-1955 ; 0932-0113 ; 0044-3255
    ISSN (online) 1432-1955
    ISSN 0932-0113 ; 0044-3255
    DOI 10.1007/s00436-022-07460-4
    Database NAL-Catalogue (AGRICOLA)

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  9. Article: Screening of protein-ligand interactions under crude conditions by native mass spectrometry

    Takano, Kotaro / Arai, Shunsuke / Sakamoto, Seiji / Ushijima, Hiroshi / Ikegami, Takahisa / Saikusa, Kazumi / Konuma, Tsuyoshi / Hamachi, Itaru / Akashi, Satoko

    Analytical and bioanalytical chemistry. 2020 July, v. 412, no. 17

    2020  

    Abstract: A convenient analytical system for protein-ligand interactions under crude conditions was developed using native mass spectrometry (MS). As a model protein, Escherichia coli (E. coli) dihydrofolate reductase (DHFR) with and without a histidine tag was ... ...

    Abstract A convenient analytical system for protein-ligand interactions under crude conditions was developed using native mass spectrometry (MS). As a model protein, Escherichia coli (E. coli) dihydrofolate reductase (DHFR) with and without a histidine tag was used for the study. First, overexpressed DHFR with a His-tag was roughly purified with a Ni-sepharose resin and subjected to native mass spectrometry with or without incubation with an inhibitor, Methotrexate (MTX). Even only with the minimum cleanup by the Ni-sepharose resin, intact ions of DHFR-nicotinamide adenine dinucleotide phosphate (NADPH) and DHFR-NADPH-ligand complexes were successfully observed. By optimizing the preparation procedures of the crude sample for native MS, e.g., avoiding sonication for cell lysis, we successfully observed intact ions of the specific DHFR-NADPH-MTX ternary complex starting with cultivation of E. coli in ≤ 25 mL medium. When the crude DHFR sample was mixed with two, four, or eight candidate compounds, only ions of the specific protein-ligand complex were observed. This indicates that the present system can be used as a rapid and convenient method for the rough determination of binding of specific ligands to the target protein without the time-consuming purification of protein samples. Moreover, it is important to rapidly determine specific interactions with target proteins under conditions similar to those in “real” biological systems. Graphical abstract
    Keywords Escherichia coli ; adenine ; analytical chemistry ; dihydrofolate reductase ; histidine ; ligands ; mass spectrometry ; methotrexate ; phosphates ; sonication
    Language English
    Dates of publication 2020-07
    Size p. 4037-4043.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    Note NAL-AP-2-clean
    ISSN 1618-2642
    DOI 10.1007/s00216-020-02649-x
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: Screening of protein-ligand interactions under crude conditions by native mass spectrometry.

    Takano, Kotaro / Arai, Shunsuke / Sakamoto, Seiji / Ushijima, Hiroshi / Ikegami, Takahisa / Saikusa, Kazumi / Konuma, Tsuyoshi / Hamachi, Itaru / Akashi, Satoko

    Analytical and bioanalytical chemistry

    2020  Volume 412, Issue 17, Page(s) 4037–4043

    Abstract: A convenient analytical system for protein-ligand interactions under crude conditions was developed using native mass spectrometry (MS). As a model protein, Escherichia coli (E. coli) dihydrofolate reductase (DHFR) with and without a histidine tag was ... ...

    Abstract A convenient analytical system for protein-ligand interactions under crude conditions was developed using native mass spectrometry (MS). As a model protein, Escherichia coli (E. coli) dihydrofolate reductase (DHFR) with and without a histidine tag was used for the study. First, overexpressed DHFR with a His-tag was roughly purified with a Ni-sepharose resin and subjected to native mass spectrometry with or without incubation with an inhibitor, Methotrexate (MTX). Even only with the minimum cleanup by the Ni-sepharose resin, intact ions of DHFR-nicotinamide adenine dinucleotide phosphate (NADPH) and DHFR-NADPH-ligand complexes were successfully observed. By optimizing the preparation procedures of the crude sample for native MS, e.g., avoiding sonication for cell lysis, we successfully observed intact ions of the specific DHFR-NADPH-MTX ternary complex starting with cultivation of E. coli in ≤ 25 mL medium. When the crude DHFR sample was mixed with two, four, or eight candidate compounds, only ions of the specific protein-ligand complex were observed. This indicates that the present system can be used as a rapid and convenient method for the rough determination of binding of specific ligands to the target protein without the time-consuming purification of protein samples. Moreover, it is important to rapidly determine specific interactions with target proteins under conditions similar to those in "real" biological systems. Graphical abstract.
    MeSH term(s) Binding Sites ; Drug Evaluation, Preclinical/methods ; Escherichia coli/chemistry ; Escherichia coli/metabolism ; Escherichia coli Proteins/chemistry ; Escherichia coli Proteins/metabolism ; Folic Acid Antagonists/pharmacology ; Methotrexate/pharmacology ; NADP/chemistry ; NADP/metabolism ; Protein Binding ; Spectrometry, Mass, Electrospray Ionization/methods ; Tetrahydrofolate Dehydrogenase/chemistry ; Tetrahydrofolate Dehydrogenase/metabolism
    Chemical Substances Escherichia coli Proteins ; Folic Acid Antagonists ; NADP (53-59-8) ; Tetrahydrofolate Dehydrogenase (EC 1.5.1.3) ; Methotrexate (YL5FZ2Y5U1)
    Language English
    Publishing date 2020-04-23
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 201093-8
    ISSN 1618-2650 ; 0016-1152 ; 0372-7920
    ISSN (online) 1618-2650
    ISSN 0016-1152 ; 0372-7920
    DOI 10.1007/s00216-020-02649-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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