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  1. Article ; Online: Evaluating the effect of calcium, magnesium and sodium supplementation of Merino ewes on their lambs' growth.

    Ataollahi, F / McGrath, S / Friend, M / Dutton, G / Peters, A / Bhanugopan, M

    Australian veterinary journal

    2023  Volume 101, Issue 10, Page(s) 391–396

    Abstract: Our study aimed to investigate responses to supplementation of calcium (Ca), magnesium (Mg) and sodium (Na) to lactating ewes and lambs grazing barley forage from lamb marking to weaning. A 10-ha paddock sown to barley was subdivided into eight plots as ... ...

    Abstract Our study aimed to investigate responses to supplementation of calcium (Ca), magnesium (Mg) and sodium (Na) to lactating ewes and lambs grazing barley forage from lamb marking to weaning. A 10-ha paddock sown to barley was subdivided into eight plots as four replicates of two treatments. Merino ewes (n = 104) with lambs at foot were stratified to the eight plots (13 ewes and 21 lambs/plot) based on number of lambs (twin or single) and ewes' weight. Supplemented groups had access to mineral supplements (30 g/ewe/day) supplying 12 g/ewe/day ground limestone, 12 g/ewe/day Causmag® and 6 g/ewe/day coarse salt in a ratio of 2: 2: 1 by weight (as fed) from day 0 (a day before lamb marking) after sample collection. Control groups were not supplemented with minerals. Blood, milk and urine samples from ewes and blood from lambs were collected at different time points, namely, a day prior to lamb marking (day 0), 14 days after the commencement of study (day 14), and 28 days after the commencement of study (day 28). Weight of the lambs was also recorded at each time point. We found that the concentration of the forage minerals (Ca, Mg and potassium (K)) was lower on day 28 than on day 0 (P < 0.025). Liveweight gain was greater in the first 14 days compared with the second weight gain period (P < 0.001). The interaction of time and treatment was significant for liveweight (P < 0.001). Due to the improvement in weight gain of supplemented lambs, we recommend that mineral supplementation during late lactation is beneficial considering the low cost of minerals, even though the mineral content of the forage was not deficient.
    MeSH term(s) Animals ; Female ; Animal Nutritional Physiological Phenomena ; Calcium ; Dietary Supplements ; Lactation/physiology ; Magnesium ; Minerals ; Sheep ; Sheep, Domestic ; Sodium ; Weight Gain
    Chemical Substances Calcium (SY7Q814VUP) ; Magnesium (I38ZP9992A) ; Minerals ; Sodium (9NEZ333N27)
    Language English
    Publishing date 2023-07-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 41542-x
    ISSN 1751-0813 ; 0005-0423
    ISSN (online) 1751-0813
    ISSN 0005-0423
    DOI 10.1111/avj.13274
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Inhibition of Aflatoxin Biosynthesis by Organophosphorus Compounds.

    Dutton, M F / Anderson, M S

    Journal of food protection

    2019  Volume 43, Issue 5, Page(s) 381–384

    Abstract: The effect of a range of organophosphorus and various other compounds on production of aflatoxin by Aspergillus flavus was investigated. Five organophosphorus compounds - Chlormephos, Ciodrin, Naled, Phosdrin and Trichlorphon- at concentrations of 20 and ...

    Abstract The effect of a range of organophosphorus and various other compounds on production of aflatoxin by Aspergillus flavus was investigated. Five organophosphorus compounds - Chlormephos, Ciodrin, Naled, Phosdrin and Trichlorphon- at concentrations of 20 and 100 μg/ml of culture fluid were found to have activity similar to Dichlorvos, in that they lowered the level of aflatoxin produced and caused formation of several anthraquinone pigments. Two of these pigments have not previously been described, one was named Versicol and a suggested structure is presented, whilst the other compound was shown to be its acetate derivative. A rationale is suggested for the required elements of structure, which are necessary for an organophosphorus compound to have Dichlorvos-type activity. Two unrelated compounds, ammonium nitrate and Tridecanone were also found to elicit Dichlorvos-type activity. It is likely that tridecanone or its breakdown products competitively inhibit enzymes involved in aflatoxin biosynthesis. It is possible that this inhibition effect explains the lowering of aflatoxin production in lipid-rich commodities infected by A. flavus .
    Language English
    Publishing date 2019-01-30
    Publishing country United States
    Document type Journal Article
    ZDB-ID 243284-5
    ISSN 1944-9097 ; 0362-028X
    ISSN (online) 1944-9097
    ISSN 0362-028X
    DOI 10.4315/0362-028X-43.5.381
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Synthesis, structural characterization, reactivity and catalytic activity of mixed halo/triflate ArI(OTf)(X) species.

    Sharp-Bucknall, Lachlan / Sceney, Marcus / White, Keith F / Dutton, Jason L

    Dalton transactions (Cambridge, England : 2003)

    2023  Volume 52, Issue 11, Page(s) 3358–3370

    Abstract: Both mixed ... ...

    Abstract Both mixed λ
    Language English
    Publishing date 2023-03-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/d3dt00275f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Oral ketamine may offer a solution to the ketamine conundrum.

    Dutton, Megan / Can, Adem T / Lagopoulos, Jim / Hermens, Daniel F

    Psychopharmacology

    2023  Volume 240, Issue 12, Page(s) 2483–2497

    Abstract: Ketamine has received considerable attention for its rapid and robust antidepressant response over the past decade. Current evidence, in clinical populations, predominantly relates to parenterally administered ketamine, which is reported to produce ... ...

    Abstract Ketamine has received considerable attention for its rapid and robust antidepressant response over the past decade. Current evidence, in clinical populations, predominantly relates to parenterally administered ketamine, which is reported to produce significant undesirable side effects, with additional concerns regarding long-term safety and abuse potential. Attempts to produce a similar drug to ketamine, without the psychotomimetic side effects, have proved elusive. Orally administered ketamine has a different pharmacological profile to parentally administered ketamine, suggesting it may be a viable alternative. Emerging evidence regarding the efficacy and tolerability of oral ketamine suggests that it may be a favourable route of administration, as it appears to obtain similarly beneficial treatment effects, but without the cost and medical resources required in parenteral dosing. The pharmacological effects may be due to the active metabolite norketamine, which has been found to be at substantially higher levels via oral dosing, most likely due to first-pass clearance. Despite bioavailability and peak plasma concentrations both being lower than when administered parenterally, evidence suggests that low-dose oral ketamine is clinically effective in treating pain. This may also be due to the actions of norketamine and therefore, its relevance to the mental health context is explored in this narrative review.
    MeSH term(s) Humans ; Ketamine/adverse effects ; Pain/drug therapy ; Antidepressive Agents/pharmacology ; Biological Availability
    Chemical Substances norketamine (XQY6JVF94X) ; Ketamine (690G0D6V8H) ; Antidepressive Agents
    Language English
    Publishing date 2023-10-26
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 130601-7
    ISSN 1432-2072 ; 0033-3158
    ISSN (online) 1432-2072
    ISSN 0033-3158
    DOI 10.1007/s00213-023-06480-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Evaluating the effect of calcium, magnesium and sodium supplementation of Merino ewes on their lambs' growth

    Ataollahi, F / McGrath, S / Friend, M / Dutton, G / Peters, A. / Bhanugopan, M

    Australian Veterinary Journal. 2023 Oct., v. 101, no. 10 p.391-396

    2023  

    Abstract: Our study aimed to investigate responses to supplementation of calcium (Ca), magnesium (Mg) and sodium (Na) to lactating ewes and lambs grazing barley forage from lamb marking to weaning. A 10‐ha paddock sown to barley was subdivided into eight plots as ... ...

    Abstract Our study aimed to investigate responses to supplementation of calcium (Ca), magnesium (Mg) and sodium (Na) to lactating ewes and lambs grazing barley forage from lamb marking to weaning. A 10‐ha paddock sown to barley was subdivided into eight plots as four replicates of two treatments. Merino ewes (n = 104) with lambs at foot were stratified to the eight plots (13 ewes and 21 lambs/plot) based on number of lambs (twin or single) and ewes' weight. Supplemented groups had access to mineral supplements (30 g/ewe/day) supplying 12 g/ewe/day ground limestone, 12 g/ewe/day Causmag® and 6 g/ewe/day coarse salt in a ratio of 2: 2: 1 by weight (as fed) from day 0 (a day before lamb marking) after sample collection. Control groups were not supplemented with minerals. Blood, milk and urine samples from ewes and blood from lambs were collected at different time points, namely, a day prior to lamb marking (day 0), 14 days after the commencement of study (day 14), and 28 days after the commencement of study (day 28). Weight of the lambs was also recorded at each time point. We found that the concentration of the forage minerals (Ca, Mg and potassium (K)) was lower on day 28 than on day 0 (P < 0.025). Liveweight gain was greater in the first 14 days compared with the second weight gain period (P < 0.001). The interaction of time and treatment was significant for liveweight (P < 0.001). Due to the improvement in weight gain of supplemented lambs, we recommend that mineral supplementation during late lactation is beneficial considering the low cost of minerals, even though the mineral content of the forage was not deficient.
    Keywords Merino ; barley ; blood ; body weight ; calcium ; ewes ; forage ; late lactation ; limestone ; liveweight gain ; magnesium ; milk ; mineral content ; pastures ; potassium ; sodium ; urine ; weight gain
    Language English
    Dates of publication 2023-10
    Size p. 391-396.
    Publishing place Wiley Publishing Asia Pty Ltd
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 41542-x
    ISSN 1751-0813 ; 0005-0423
    ISSN (online) 1751-0813
    ISSN 0005-0423
    DOI 10.1111/avj.13274
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Stress, mental disorder and ketamine as a novel, rapid acting treatment.

    Dutton, Megan / Can, Adem T / Lagopoulos, Jim / Hermens, Daniel F

    European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology

    2022  Volume 65, Page(s) 15–29

    Abstract: The experience of stress is often utilised in models of emerging mental illness and neurobiological systems are implicated as the intermediary link between the experience of psychological stress and the development of a mental disorder. Chronic stress ... ...

    Abstract The experience of stress is often utilised in models of emerging mental illness and neurobiological systems are implicated as the intermediary link between the experience of psychological stress and the development of a mental disorder. Chronic stress and prolonged glucocorticoid exposure have potent effects on neuronal architecture particularly in regions that modulate the hypothalamic-pituitary-adrenal (HPA) axis and are commonly associated with psychiatric disorders. This review provides an overview of stress modulating neurobiological and neurochemical systems which underpin stress-related structural and functional brain changes. These changes are thought to contribute not only to the development of disorders, but also to the treatment resistance and chronicity seen in some of our most challenging mental disorders. Reports to date suggest that stress-related psychopathology is the aetiological mechanism of these disorders and thus we review the rapid acting antidepressant ketamine as an effective emerging treatment. Ketamine, an N-methyl D-aspartate (NMDA) receptor antagonist, is shown to induce a robust treatment effect in mental disorders via enhanced synaptic strength and connectivity in key brain regions. Whilst ketamine's glutamatergic effect has been previously examined, we further consider ketamine's capacity to modulate the HPA axis and associated pathways.
    MeSH term(s) Humans ; Antidepressive Agents/therapeutic use ; Hypothalamo-Hypophyseal System/metabolism ; Ketamine/therapeutic use ; Mental Disorders/drug therapy ; Pituitary-Adrenal System/metabolism ; Receptors, N-Methyl-D-Aspartate/metabolism ; Stress, Psychological/physiopathology
    Chemical Substances Antidepressive Agents ; Ketamine (690G0D6V8H) ; Receptors, N-Methyl-D-Aspartate
    Language English
    Publishing date 2022-10-04
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 1082947-7
    ISSN 1873-7862 ; 0924-977X
    ISSN (online) 1873-7862
    ISSN 0924-977X
    DOI 10.1016/j.euroneuro.2022.09.006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Biased agonism of protease-activated receptor-1 regulates thrombo-inflammation in murine sickle cell disease.

    Ramadas, Nirupama / Lowder, Kailyn / Dutton, Joshua / Trebak, Fatima / Faes, Camille / Griffin, John H / Pawlinski, Rafal / Mosnier, Laurent O / Sparkenbaugh, Erica M

    Blood advances

    2024  

    Abstract: Sickle cell disease (SCD) is a hereditary hemoglobinopathy marked by hemolytic anemia and vaso-occlusive events (VOE). Chronic endothelial activation, inflammation, and coagulation activation contribute to vascular congestion, VOE, and end-organ damage. ... ...

    Abstract Sickle cell disease (SCD) is a hereditary hemoglobinopathy marked by hemolytic anemia and vaso-occlusive events (VOE). Chronic endothelial activation, inflammation, and coagulation activation contribute to vascular congestion, VOE, and end-organ damage. Coagulation proteases like thrombin and activated protein C (APC) modulate inflammation and endothelial dysfunction by activating protease-activated receptor 1 (PAR1), a G-protein coupled receptor. Thrombin cleaves PAR1 at Arg41, while APC cleaves PAR1 at Arg46, initiating either pro-inflammatory or cytoprotective signaling, respectively, a signaling conundrum known as biased agonism. Our prior research established the role of thrombin and PAR1 in vascular stasis in an SCD mouse model. However, the role of APC and APC-biased PAR1 signaling in thrombin generation, inflammation and endothelial activation in SCD remains unexplored. Inhibition of APC in SCD mice increased thrombin generation, inflammation, and endothelial activation during both steady state and TNFα challenge. To dissect the individual contributions of thrombin-PAR1 and APC-PAR1 signaling, we employed transgenic mice with point mutations at two PAR1 cleavage sites, ArgR41Gln (R41Q) imparting insensitivity to thrombin and Arg46Gln (R46Q) imparting insensitivity to APC. Sickle bone marrow chimeras expressing PAR1-R41Q exhibited reduced thrombo-inflammatory responses compared to PAR1-WT or PAR1-R46Q mice. These findings highlight the potential benefit of reducing thrombin-dependent PAR1 activation while preserving APC-PAR1 signaling in SCD thromboinflammation. These results also suggest that pharmacological strategies promoting biased PAR1 signaling could effectively mitigate vascular complications associated with SCD.
    Language English
    Publishing date 2024-04-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2915908-8
    ISSN 2473-9537 ; 2473-9529
    ISSN (online) 2473-9537
    ISSN 2473-9529
    DOI 10.1182/bloodadvances.2023011907
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: C-H, Si-H and C-F abstraction with an extremely electron poor I(III) reagent.

    Tania / Sceney, Marcus / Bennetts, Jason D / Barwise, Lachlan / White, Keith F / Dutton, Jason L

    Dalton transactions (Cambridge, England : 2003)

    2023  Volume 52, Issue 43, Page(s) 15866–15870

    Abstract: The recently discovered I(III) reagent ... ...

    Abstract The recently discovered I(III) reagent NO
    Language English
    Publishing date 2023-11-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472887-4
    ISSN 1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
    ISSN (online) 1477-9234 ; 1364-5447
    ISSN 0300-9246 ; 1477-9226
    DOI 10.1039/d3dt03266c
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Deep Learning-Based Survival Analysis for Receiving a Steatotic Donor Liver Versus Waiting for a Standard Liver.

    Zhang, Xiao / Dutton, Matthew / Liu, Rongjie / Ali, Askal A / Sherbeny, Fatimah

    Transplantation proceedings

    2023  Volume 55, Issue 10, Page(s) 2436–2443

    Abstract: Background: An emerging strategy to expand the donor pool is the use of a steatotic donor liver (SDLs; ≥ 30% macrosteatosis on biopsy). With the obesity epidemic and prevalence of nonalcoholic fatty liver disease, SDLs have been reported in 59% of all ... ...

    Abstract Background: An emerging strategy to expand the donor pool is the use of a steatotic donor liver (SDLs; ≥ 30% macrosteatosis on biopsy). With the obesity epidemic and prevalence of nonalcoholic fatty liver disease, SDLs have been reported in 59% of all deceased donors. Many potential candidates need to decide whether to accept an SDL offer or remain on the waitlist for a nonsteatotic donor liver (non-SDL). The objective of this study was to compare the survival of accepting an SDL vs using a non-SDL after waiting various times.
    Methods: Using data from the United States' organ procurement and transplantation network, deep survival learning predictive models were built to compare post-decision survival after accepting an SDL vs waiting for a non-SDL. The comparison subjects contain simulated 20,000 different scenarios of a candidate either accepting an SDL immediately or receiving a non-SDL after waiting various times. The research variables were selected using the LASSO-Cox and Random Survival Forest (RSF) models. The Cox proportional hazards and RSF models were also comparatively included for survival prediction. In addition, personalized survival curves for randomly selected candidates were generated.
    Result: Deep survival learning outperformed Cox proportional hazards and RSF in predicting the survival of liver transplants. Among the simulations, 25% to 30% of scenarios demonstrated a higher 3-year survival post-decision for candidates accepting an SDL than waiting and receiving a non-SDL. The difference was only 1.43% in 3-year survival post-decision between accepting an SDL and waiting 260 days (mean waitlist time) for a non-SDL. As the number of days on the waitlist increases, the difference in survival between accepting SDLs and waiting for non-SDLs decreases.
    Conclusions: Appropriately used SDLs could expand the donor pool and relieve the candidates' unmet need for donor livers, which presents long-term survival benefits for recipients.
    MeSH term(s) Humans ; Deep Learning ; Fatty Liver/pathology ; Graft Survival ; Liver Transplantation/adverse effects ; Living Donors ; Survival Analysis ; Tissue and Organ Procurement ; Tissue Donors ; United States ; Waiting Lists
    Language English
    Publishing date 2023-10-22
    Publishing country United States
    Document type Comparative Study ; Journal Article
    ZDB-ID 82046-5
    ISSN 1873-2623 ; 0041-1345
    ISSN (online) 1873-2623
    ISSN 0041-1345
    DOI 10.1016/j.transproceed.2023.09.032
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Spectral Changes of EEG Following a 6-Week Low-Dose Oral Ketamine Treatment in Adults With Major Depressive Disorder and Chronic Suicidality.

    Anijärv, T E / Can, A T / Gallay, C C / Forsyth, G A / Dutton, M / Mitchell, J S / Hermens, D F / Lagopoulos, J

    The international journal of neuropsychopharmacology

    2023  Volume 26, Issue 4, Page(s) 259–267

    Abstract: Background: Ketamine has considerable therapeutic potential in alleviating major depressive disorder and chronic suicidality. However, the clinical diagnosis of neuropsychiatric disorders requires more robust diagnostic criteria. Electroencephalography ( ...

    Abstract Background: Ketamine has considerable therapeutic potential in alleviating major depressive disorder and chronic suicidality. However, the clinical diagnosis of neuropsychiatric disorders requires more robust diagnostic criteria. Electroencephalography (EEG) has shown promise in classifying depressive and suicidal patients from healthy individuals. The present study aimed to identify changes in the spectral properties of EEG in patients with major depressive disorder and chronic suicidality after completing the 6-week Oral Ketamine Trial on Suicidality with follow-up occurring 4 weeks after final ketamine treatment and determine associations between EEG spectral output and clinical symptoms.
    Methods: Participants (n = 25) had 4-minute eyes closed resting state EEG recorded at frontal, temporal, centro-parietal, and occipital regions. Spectral analysis was performed with Welch's power spectrum density method, and the power of 4 distinct frequency bands was analyzed: theta, alpha, low-beta, and high-beta. Correlation analyses between changes in clinical symptoms and spectral power were conducted using Spearman's ranked correlation.
    Results: Between pre- and posttreatment, only centro-parietal alpha power decreased. Between posttreatment and follow-up, centro-parietal alpha increased again in addition to increases in temporal alpha, centro-parietal and temporal theta, and occipital low-beta and decreases in occipital theta and temporal low-beta. Additionally, the decrease of occipital theta positively correlated with clinical subscales for depression and stress.
    Conclusions: EEG spectral analysis revealed significant changes in theta, alpha, and low-beta frequency bands. Alpha band showed initial changes after treatment; however, this trended back toward baseline levels after the treatment cessation. In contrast, theta and low-beta showed significant power changes only after the treatment had ended.
    MeSH term(s) Adult ; Humans ; Depressive Disorder, Major/drug therapy ; Electroencephalography/methods ; Ketamine/therapeutic use ; Suicidal Ideation ; Suicide
    Chemical Substances Ketamine (690G0D6V8H)
    Language English
    Publishing date 2023-03-10
    Publishing country England
    Document type Clinical Trial ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1440129-0
    ISSN 1469-5111 ; 1461-1457
    ISSN (online) 1469-5111
    ISSN 1461-1457
    DOI 10.1093/ijnp/pyad006
    Database MEDical Literature Analysis and Retrieval System OnLINE

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