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Doohan MA, Stewart IB, Coulter TJ, Drovandi C, Weier S, Borg DN. Corrigendum to 'Excerpt', Physiology and Behavior, 252 (2022) 113,852. Physiol Behav 2023; 267:114223. [PMID: 37167862 DOI: 10.1016/j.physbeh.2023.114223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Affiliation(s)
- Meg A Doohan
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, Australia.
| | - Ian B Stewart
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, Australia; Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
| | - Tristan J Coulter
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, Australia
| | - Christopher Drovandi
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, QLD, Australia; Australian Research Council Centre of Excellence for Mathematical and Statistical Frontiers, Queensland University of Technology, Brisbane, Queensland, Australia; Centre for Data Science, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Steven Weier
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia
| | - David N Borg
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, Australia; Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia; The Hopkins Centre, Menzies Health Institute Queensland, Griffith University, Brisbane, Australia
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Maley MJ, Hunt AP, Stewart IB, Weier S, Holland J, Leicht CA, Minett GM. Hot water immersion acutely reduces peripheral glucose uptake in young healthy males: An exploratory crossover randomized controlled trial. Temperature (Austin) 2023; 10:434-443. [PMID: 38130658 PMCID: PMC10732630 DOI: 10.1080/23328940.2022.2161242] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 12/18/2022] [Indexed: 01/10/2023] Open
Abstract
Whether glucose concentration increases during heat exposure because of reduced peripheral tissue uptake or enhanced appearance is currently unknown. This study aimed to report glucose concentrations in both capillary and venous blood in response to a glucose challenge during passive heating (PH) to assess whether heat exposure affects glucose uptake in healthy males. Twelve healthy male participants completed two experimental sessions, where they were asked to undertake an oral glucose tolerance test (OGTT) whilst immersed in thermoneutral (CON, 35.9 (0.6) °C) and hot water (HWI, 40.3 (0.5) °C) for 120 min. Venous and capillary blood [glucose], rectal temperature, and heart rate were recorded. [Glucose] area under the curve for HWI venous (907 (104) AU) differed from CON venous (719 (88) AU, all P < 0.001). No other differences were noted (P > 0.05). Compared with CON, HWI resulted in greater rectal temperature (37.1 (0.3) °C versus 38.6 (0.4) °C, respectively) and heart rate (69 (12) bpm versus 108 (11) bpm, respectively) on cessation (P < 0.001). An OGTT results in similar capillary [glucose] during hot and thermoneutral water immersion, whereas venous [glucose] was greater during HWI when compared with CON. This indicates that peripheral tissue glucose uptake is acutely reduced in response to HWI. Abbreviations: AUC: Area under the curve; CON: Thermoneutral immersion trial; HWI: Hot water immersion trial; OGTT: Oral glucose tolerance test; PH: Passive heating; T - m s k : Mean skin temperature; Trec: Rectal temperature.
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Affiliation(s)
- Matthew J. Maley
- Environmental Ergonomics Research Centre, Loughborough School of Design and Creative Arts, Loughborough University, Loughborough, UK
- Queensland University of Technology, Faculty of Health, School of Exercise and Nutrition Sciences, Kelvin Grove, QLD, Australia
| | - Andrew P. Hunt
- Queensland University of Technology, Faculty of Health, School of Exercise and Nutrition Sciences, Kelvin Grove, QLD, Australia
- Queensland University of Technology, Faculty of Health, School of Biomedical Sciences, Brisbane, QLD, Australia
| | - Ian B. Stewart
- Queensland University of Technology, Faculty of Health, School of Exercise and Nutrition Sciences, Kelvin Grove, QLD, Australia
| | - Steven Weier
- Queensland University of Technology, Faculty of Health, School of Biomedical Sciences, Brisbane, QLD, Australia
| | - Justin Holland
- Queensland University of Technology, Faculty of Health, School of Exercise and Nutrition Sciences, Kelvin Grove, QLD, Australia
| | - Christof A. Leicht
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Geoffrey M. Minett
- Queensland University of Technology, Faculty of Health, School of Exercise and Nutrition Sciences, Kelvin Grove, QLD, Australia
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Doohan MA, Stewart IB, Coulter TJ, Drovandi C, Weier S, Borg DN. Modified Stroop Task Performance When Wearing Protective Clothing in the Heat: An Evaluation of the Maximum Adaptability Model. Physiol Behav 2021; 246:113690. [PMID: 34958826 DOI: 10.1016/j.physbeh.2021.113690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 01/30/2023]
Abstract
INTRODUCTION This exploratory study investigated whether performance in a behavioural inhibition task followed the shape proposed by the Maximum Adaptability Model during progressive exertional heat stress-that is, an initial improvement in cognitive performance is followed by a plateau, and subsequent decline once body temperature continues to rise unabated. METHODS Seventeen adult males walked on a treadmill at 4 km•h-1 (1% grade) for up to 120 min, in three protective clothing ensembles, across three simulated environments. The simulated environments were equivalent to wet bulb globe temperatures 21, 30 and 37°C. Cognitive function was assessed using a modified colour-word Stroop Task, with performance expressed as inverse efficiency scores in the simple (congruent) and more complex (incongruent) task conditions. The Stroop Task was completed before a trial, at termination, and every 30 min during walking, and core body temperature was continuously measured. Data were modelled using Bayesian penalised regression, with core body temperature included as a non-linear term (i.e., second degree polynomial). RESULTS We did not find any evidence that core body temperature had an effect on congruent or incongruent inverse efficiency scores, and no evidence that the relationship between these variables followed the shaped described by the Maximum Adaptability Model. There was, however, evidence that higher pre-exercise serum osmolality values were associated with slower congruent (β = 9.19) and incongruent (β = 8.67) inverse efficiency scores. The posterior probability that these effects were greater than zero was 0.971 and 0.952, respectively. CONCLUSIONS In young, fit men, performance in the behavioural inhibition task was unaffected by increases in body temperature up to 39°C and did not follow the shape proposed by the Maximum Adaptability Model. A secondary finding of the study was that pre-exercise hydration status affected performance in the inhibition task. Future studies are needed to confirm this result.
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Affiliation(s)
- Meg A Doohan
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, Australia
| | - Ian B Stewart
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, Australia; Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
| | - Tristan J Coulter
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, Australia
| | - Christopher Drovandi
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia; Australian Research Council Centre of Excellence for Mathematical and Statistical Frontiers, Queensland University of Technology, Brisbane, Queensland, Australia; Centre for Data Science, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Steven Weier
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Australia
| | - David N Borg
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, Australia; Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia; The Hopkins Centre, Menzies Health Institute Queensland, Griffith University, Brisbane, Australia.
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Segura Munoz RR, Quach T, Gomes-Neto JC, Xian Y, Pena PA, Weier S, Pellizzon MA, Kittana H, Cody LA, Geis AL, Heck K, Schmaltz RJ, Bindels LB, Cahoon EB, Benson AK, Clemente TE, Ramer-Tait AE. Stearidonic-Enriched Soybean Oil Modulates Obesity, Glucose Metabolism, and Fatty Acid Profiles Independently of Akkermansia muciniphila. Mol Nutr Food Res 2020; 64:e2000162. [PMID: 32656952 PMCID: PMC8606245 DOI: 10.1002/mnfr.202000162] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 06/04/2020] [Indexed: 11/06/2022]
Abstract
SCOPE Previous studies have suggested that diets rich in omega-3 and low in omega-6 long-chain polyunsaturated fatty acids (PUFAs) can limit the development of metabolic syndrome (MetS). Transgenic soybeans yielding oils enriched for omega-3 PUFAs represent a new and readily-available option for incorporating omega-3 PUFAs into diets to provide health benefits. METHODS AND RESULTS Transgenic soybean oils, enriched for either stearidonic acid (SDA) or eicosapentaenoic acid (EPA), are incorporated into diets to test their effects on limiting the development of MetS in a mouse model of diet-induced obesity. Supplementation with SDA- but not EPA-enriched oils improved features of MetS compared to feeding a control wild-type oil. Because previous studies have linked the gut microorganism Akkermansia muciniphila to the metabolic effects of feeding omega-3 PUFAs, the causal contribution of A. muciniphila to mediating the metabolic benefits provided by SDA-enriched diets is investigated. Although A. muciniphila is not required for SDA-induced metabolic improvements, this microorganism does modulate levels of saturated and mono-unsaturated fatty acids in host adipose tissues. CONCLUSION Together, these findings support the utilization of SDA-enriched diets to modulate weight gain, glucose metabolism, and fatty acid profiles of liver and adipose tissue.
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Affiliation(s)
- Rafael R Segura Munoz
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
- Nebraska Food for Health Center, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Truyen Quach
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA
- Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - João C Gomes-Neto
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Yibo Xian
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
- Nebraska Food for Health Center, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Pamela A Pena
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA
- Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Steven Weier
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | | | - Hatem Kittana
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Liz A Cody
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Abby L Geis
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
- Arkansas College of Osteopathic Medicine, Fort Smith, AR, 72916, USA
| | - Kari Heck
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Robert J Schmaltz
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Laure B Bindels
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Edgar B Cahoon
- Nebraska Food for Health Center, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
- Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Andrew K Benson
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
- Nebraska Food for Health Center, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Tom Elmo Clemente
- Nebraska Food for Health Center, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, 68583, USA
- Center for Plant Science Innovation, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Amanda E Ramer-Tait
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
- Nebraska Food for Health Center, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
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Segura Munoz RR, Quach T, Gomes‐Neto JC, Xian Y, Pena PA, Weier S, Pellizzon MA, Kittana H, Cody LA, Geis AL, Heck K, Schmaltz RJ, Bindels LB, Cahoon EB, Benson AK, Clemente TE, Ramer‐Tait AE. Front Cover: Stearidonic‐Enriched Soybean Oil Modulates Obesity, Glucose Metabolism, and Fatty Acid Profiles Independently of
Akkermansia muciniphila. Mol Nutr Food Res 2020. [DOI: 10.1002/mnfr.202070038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Nili E, Li FJ, Dawson RA, Lau C, McEwan B, Barnett NL, Weier S, Walshe J, Richardson NA, Harkin DG. The Impact of Limbal Mesenchymal Stromal Cells on Healing of Acute Ocular Surface Wounds Is Improved by Pre-cultivation and Implantation in the Presence of Limbal Epithelial Cells. Cell Transplant 2019; 28:1257-1270. [PMID: 31208228 PMCID: PMC6767890 DOI: 10.1177/0963689719858577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
While limbal epithelial cells are used for treating ocular surface wounds, the therapeutic potential of mesenchymal cells cultivated from the limbal stroma (LMSC) is less clear. We have therefore examined the effects of LMSC when applied to acute ocular surface wounds. LMSC derived from male rabbits (RLMSC) were applied to the ocular surface of female rabbits immediately following removal of the corneal and limbal epithelium. Human amniotic membrane (HAM) was used as the vehicle for implanting the RLMSC. The effects of RLMSC were examined when applied alone (n = 3) and in conjunction with a stratified culture of human limbal epithelial cells (HLE) grown on the opposing surface of the HAM (n = 3). Outcomes were monitored over 3 months in comparison with animals receiving no treatment (n = 3) or treatment with HLE alone on HAM (n = 3). Animals treated with RLMSC (n = 6) displayed faster re-epithelialization (∼90% versus 70% healing after 12 weeks), with best results being observed when RLMSC were pre-cultivated and implanted in the presence of HLE (p < 0.01; 90% healing by 7 weeks). While all animals displayed conjunctival cells on the corneal surface (by presence of goblet cells and/or keratin 13 expression) and corneal neovascularization, evidence of corneal epithelial regeneration was observed in animals that received RLMSC in the presence of HLE (by staining for keratin 3 and the absence of goblet cells). Conversely, corneal neovascularization was significantly greater when RLMSC were applied in the absence of HLE (<0.05; 90% of cornea compared with 20-30% in other cohorts). Nevertheless, neither human nuclear antigen nor rabbit Y chromosome were detected within the regenerated epithelium. Our results demonstrate that while cultured LMSC encourage corneal re-epithelialization, healing is improved by the pre-cultivation and implantation of these mesenchymal cells in the presence of limbal epithelial cells.
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Affiliation(s)
- Elham Nili
- Faculty of Health and the Institute of Health & Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia.,Queensland Eye Institute, South Brisbane, Queensland, Australia
| | - Fiona J Li
- Queensland Eye Institute, South Brisbane, Queensland, Australia
| | - Rebecca A Dawson
- Faculty of Health and the Institute of Health & Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia.,Queensland Eye Institute, South Brisbane, Queensland, Australia
| | - Cora Lau
- UQ Biological Resources, The University of Queensland, Herston, Queensland, Australia
| | - Blair McEwan
- UQ Biological Resources, The University of Queensland, Herston, Queensland, Australia
| | - Nigel L Barnett
- Faculty of Health and the Institute of Health & Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia.,Queensland Eye Institute, South Brisbane, Queensland, Australia
| | - Steven Weier
- Faculty of Health and the Institute of Health & Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Jennifer Walshe
- Queensland Eye Institute, South Brisbane, Queensland, Australia
| | - Neil A Richardson
- Faculty of Health and the Institute of Health & Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia.,Queensland Eye Institute, South Brisbane, Queensland, Australia
| | - Damien G Harkin
- Faculty of Health and the Institute of Health & Biomedical Innovation, School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia.,Queensland Eye Institute, South Brisbane, Queensland, Australia
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Craig SB, Weier S, Robertson G. Leptospirosis QAP – Laboratories need to do better! Pathology 2018. [DOI: 10.1016/j.pathol.2017.12.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Park H, Weier S, Razvi F, Peña PA, Sims NA, Lowell J, Hungate C, Kissinger K, Key G, Fraser P, Napier JA, Cahoon EB, Clemente TE. Towards the development of a sustainable soya bean-based feedstock for aquaculture. Plant Biotechnol J 2017; 15:227-236. [PMID: 27496594 PMCID: PMC5258864 DOI: 10.1111/pbi.12608] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 07/27/2016] [Accepted: 08/02/2016] [Indexed: 05/19/2023]
Abstract
Soya bean (Glycine max (L.) Merr.) is sought after for both its oil and protein components. Genetic approaches to add value to either component are ongoing efforts in soya bean breeding and molecular biology programmes. The former is the primary vegetable oil consumed in the world. Hence, its primary usage is in direct human consumption. As a means to increase its utility in feed applications, thereby expanding the market of soya bean coproducts, we investigated the simultaneous displacement of marine ingredients in aquafeeds with soya bean-based protein and a high Omega-3 fatty acid soya bean oil, enriched with alpha-linolenic and stearidonic acids, in both steelhead trout (Oncorhynchus mykiss) and Kampachi (Seriola rivoliana). Communicated herein are aquafeed formulations with major reduction in marine ingredients that translates to more total Omega-3 fatty acids in harvested flesh. Building off of these findings, subsequent efforts were directed towards a genetic strategy that would translate to a prototype design of an optimal identity-preserved soya bean-based feedstock for aquaculture, whereby a multigene stack approach for the targeted synthesis of two value-added output traits, eicosapentaenoic acid and the ketocarotenoid, astaxanthin, were introduced into the crop. To this end, the systematic introduction of seven transgenic cassettes into soya bean, and the molecular and phenotypic evaluation of the derived novel events are described.
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Affiliation(s)
- Hyunwoo Park
- Department of Agronomy & HorticultureUniversity of Nebraska‐LincolnLincolnNEUSA
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Steven Weier
- Department of Food Science and TechnologyThe Food Processing CenterUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Fareha Razvi
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Pamela A. Peña
- Department of Agronomy & HorticultureUniversity of Nebraska‐LincolnLincolnNEUSA
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
| | | | | | | | | | | | - Paul Fraser
- Centre for Systems and Synthetic BiologySchool of Biological SciencesRoyal Holloway, University of LondonEghamSurreyUK
| | | | - Edgar B. Cahoon
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
- Department of BiochemistryUniversity of Nebraska‐LincolnLincolnNEUSA
| | - Tom E. Clemente
- Department of Agronomy & HorticultureUniversity of Nebraska‐LincolnLincolnNEUSA
- Center for Plant Science InnovationUniversity of Nebraska‐LincolnLincolnNEUSA
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Kildey K, Rooks K, Weier S, Flower RL, Dean MM. Effect of age, gender and mannose-binding lectin (MBL) status on the inflammatory profile in peripheral blood plasma of Australian blood donors. Hum Immunol 2014; 75:973-9. [DOI: 10.1016/j.humimm.2014.08.200] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 08/18/2014] [Accepted: 08/18/2014] [Indexed: 02/07/2023]
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Moore A, Suppiah R, Weier S. Re: Hyponatraemia and seizures in oncology patients associated with hypotonic intravenous fluids. J Paediatr Child Health 2007; 43:415-6. [PMID: 17489839 DOI: 10.1111/j.1440-1754.2007.01093.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Müller H, Weier S, Kojouharoff G, Grez M, Berger S, Kappus R, Shah PM, Stutte HJ, Schmidts HL. Distribution and infection of Langerhans cells in the skin of HIV-infected healthy subjects and AIDS patients. Res Virol 1993; 144:59-67. [PMID: 8446779 DOI: 10.1016/s0923-2516(06)80013-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The in situ content of cells of the reticuloendothelial system and lymphatic cells was examined in the skin of eight symptom-free HIV-positive individuals, three AIDS patients and eleven healthy immunocompetent volunteers. The epidermis was obtained in vivo by the suction blister technique. The numbers of CD68+, CD3+, CD8+, CD25-(IL2R)+ and HLA-DR+ intraepidermal cells proved to be independent of the number of CD4+ peripheral blood lymphocytes. At the same time, the intraepidermal concentrations of these cells were generally low in symptom-free HIV-infected individuals. The strong inverse correlation between the number of epidermal Langerhans cells (LC) and the severity of immunodeficiency was quantitatively confirmed; an increase in LC in symptom-free HIV-infected individuals was found. Thus, the reduction in these cells which was observed in the epidermis of AIDS patients began at a significantly elevated level. In contrast to results from other studies, in AIDS patients, in the present study, the concentration of epidermal LC did not differ significantly from that of healthy immunocompetent volunteers. The immunohistochemical technique can be as effective as in situ hybridization for the detection of HIV in the skin. Our results suggest that the viral load of the skin is rather low in HIV-infected subjects. HIV was demonstrated in one cell of one AIDS case by in situ techniques and this result was confirmed by a polymerase chain reaction examination using the same amount of tissue as for the in situ techniques.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- H Müller
- Senckenbergisches Zentrum, J.W. Goethe-Universität, Frankfurt am Main, Germany
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Fischer P, Baum RP, Tauber M, Boeckmann W, Weier S, Scherberich JE. Immunoscintigraphic localization of renal tumours in an extracorporeal perfusion model with a monoclonal antibody against gamma-glutamyltransferase. Cancer Immunol Immunother 1992; 35:283-8. [PMID: 1355011 PMCID: PMC11038987 DOI: 10.1007/bf01789336] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/1992] [Accepted: 03/17/1992] [Indexed: 10/25/2022]
Abstract
Monoclonal antibody 138H11 against human gamma-glutamyltransferase has been shown to react immunohistochemically with 98% of all tested clear-cell type and chromophilic renal cell carcinomas, but not with renal chromophobic carcinomas, Duct-Bellini carcinomas or oncocytomas. In normal kidney the target epitopes of mAb 138H11 are located in the luminal brush-border membrane of proximal tubule cells, whereas in renal carcinomas the epitopes are found surrounding the whole tumour cells. These results form the basis of the present immunoscintigraphic study designed to evaluate mAb 138H11 in an extracorporeal perfusion model. Immediately after nephrectomy, human tumour-bearing kidneys were perfused with 99mTc-labelled mAb 138H11 in Euro-Collins solution. High specific uptake in 4/4 renal clear cell carcinomas could be demonstrated by planar immunoscintigraphy and single-photon-emission computed tomography, "regions of interest" investigation and immunohistochemistry. In contrast, a perfused oncocytoma showed up as an unlabelled lesion. The results indicate a possible use for mAb 138H11 in immunoscintigraphy or even therapy, provided high tumour uptake can be confirmed in patients.
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Affiliation(s)
- P Fischer
- Department of Nephrology, University Hospital, J. W. Goethe University, Frankfurt (Main), Federal Republic of Germany
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