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Siqueira I, Lin J, Robertson T, Mitchell J, Kohut SA, Donma AJ, Seifert-Hansen M, Telfer H, Anthony S. “We're Not Really By Ourselves Anymore”: Implementation and Effectiveness Evaluation of a Mindfulness-Based Retreat for Mothers of Pediatric Heart Transplant Recipients. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.689] [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: 04/05/2023] Open
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King G, Buratto E, Celermajer D, Grigg L, Alphonso N, Robertson T, Bullock A, Ayer J, Iyengar A, d'Udekem Y, Konstantinov I. Natural and Modified History of Atrioventricular Valve Regurgitation in Patients With Fontan Circulation: Impact of Right Ventricular Dominance. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.460] [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: 10/16/2022]
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Vetten Z, Auld B, Brooks P, Robertson T, Lee-Tannock A, Yim D, Han D, Alsweiler J, Gentles T. Inter-Rater Reliability and Agreement of Fetal Echocardiography Measurements Among Investigators From Multiple Sites. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.456] [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: 11/28/2022]
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Jardine K, Robertson T, Kava M, Bratkovic D, Stanley F. Tango 2 Case Series: Cardiac Manifestations. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.04.021] [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: 10/18/2022]
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Robertson T, Zimskind L. Acceptability and Effectiveness of Shaping Up My Choices Nutrition Lessons in 3rd Grade Classrooms. J Acad Nutr Diet 2020. [DOI: 10.1016/j.jand.2020.06.024] [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: 10/23/2022]
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Chen K, Robertson T, Wu M, Alicandro J, Friedrich M. The Impact of the PCMH Model on Poststroke Follow‐up Visits and Hospital Readmissions. Health Serv Res 2020. [DOI: 10.1111/1475-6773.13503] [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: 11/29/2022] Open
Affiliation(s)
- K.‐S. Chen
- New York State Department of Health Albany NY USA
| | - T. Robertson
- New York State Department of Health Albany NY USA
| | - M. Wu
- New York State Department of Health Albany NY USA
| | - J. Alicandro
- New York State Department of Health Albany NY USA
| | - M. Friedrich
- New York State Department of Health Albany NY USA
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Disher N, Robertson T, Duncan S, Grainger S, Ahn K, Hay C, Leighs T, Palmer J, Lim J, White T, Pemberton J, Iosua E, Hancox B, Coffey S. A061 Exercise Stress Echocardiography as Predictor for Major Adverse Cardiac Events: A Single Centre Retrospective Study. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.05.066] [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: 11/26/2022]
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Wyche P, Robertson T, Letizia B, Cooper C. 31. Polypoid well-differentiated liposarcoma of the oesophagus. Pathology 2019. [DOI: 10.1016/j.pathol.2018.09.030] [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: 11/28/2022]
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10
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Vidler J, Robertson T, Kerr K, Sim S. A case of parafalcine sclerosing extramedullary haematopoietic tumour. Pathology 2019. [DOI: 10.1016/j.pathol.2018.12.282] [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: 10/27/2022]
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Hammarberg K, Trounson A, McBain J, Matthews P, Robertson T, Robertson F, Magli C, Mhlanga T, Makurumure T, Marechera F. Improving access to ART in low-income settings through knowledge transfer: a case study from Zimbabwe. Hum Reprod Open 2018; 2018:hoy017. [PMID: 30895258 PMCID: PMC6276666 DOI: 10.1093/hropen/hoy017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/23/2018] [Accepted: 09/05/2018] [Indexed: 11/13/2022] Open
Abstract
It may be assumed that infertility is not a problem in resource-poor areas where fertility rates are high. However, evidence overwhelmingly shows that childlessness is highly stigmatized in these settings and that women who are unable to bear children suffer significant social and psychological consequences. The World Health Organization has recommended that infertility be considered a global health problem and stated the need for ART to be adapted to low-resource settings. This paper describes a model for improving access to ART in low-resource settings. Experienced ART health professionals from Australia and Italy representing medical science, embryology, nursing and counselling used knowledge transfer to support a clinician, a laboratory scientist and a nurse to establish an ART service in Harare, Zimbabwe. Support and mentorship provided between October 2016 and December 2017 included: hosting the clinician and the embryologist for the new service in established ART clinics for short periods and providing them with dedicated mentorship and training during their stay; funding an experienced embryologist to travel to Zimbabwe (three times) to oversee the setting up of the lab and provide hands-on embryology training; funding a scientist and a nurse to travel to Zimbabwe to troubleshoot and establish protocols for record keeping and psychosocial care; and contributing approximately AUD $15,000 to the purchase of some equipment. By 31 March 2018, the team at IVF Zimbabwe had performed 166 ART procedures, which at time of writing had resulted in 16 births and 4 ongoing pregnancies. This case study demonstrates that with mentorship and modest financial support from ART experts from high-income settings, health professionals in low-income settings can deliver affordable ART with successful outcomes.
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Affiliation(s)
- K Hammarberg
- School of Public Health and Preventive Medicine, Monash University, Melbourne 3004, Australia
| | - A Trounson
- Centre for Cancer Research, Monash University and Hudson Institute of Medical Research, Melbourne 3168, Australia
| | - J McBain
- Melbourne IVF, Melbourne 3002, Australia
| | - P Matthews
- Consultant Embryologist, Melbourne 3000, Australia
| | - T Robertson
- Retired Medical and Embryology practitioners, IVF Zimbabwe, Harare 263, Zimbabwe
| | - F Robertson
- Retired Medical and Embryology practitioners, IVF Zimbabwe, Harare 263, Zimbabwe
| | - C Magli
- SISMER, 40138 Bologna, Italy
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Nadolski G, Salute A, Robertson T, Trerotola S. Abstract No. 660 Initial experience with Arrow ClearClot over-the-wire thrombectomy device in an in vivo model of iliocaval thrombosis. J Vasc Interv Radiol 2018. [DOI: 10.1016/j.jvir.2018.01.705] [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: 10/17/2022] Open
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13
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Lambe K, Thornton L, Jepson R, Robertson T. Socioeconomic patterning of food and drink advertising at transport stops in Edinburgh, UK. Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx187.483] [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: 11/13/2022] Open
Affiliation(s)
- K Lambe
- University of Edinburgh, Edinburgh, UK
| | | | - R Jepson
- University of Edinburgh, Edinburgh, UK
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Lyons A, Belsches T, Robertson T, Veldkamp P, Demetria E, Kensler C. Use of Ultrasound in an Outpatient Primary Care Clinic in
Mozambique. Ann Glob Health 2017. [DOI: 10.1016/j.aogh.2017.03.187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Day BW, Al-Ejeh F, Bruce ZC, Ensbey KS, Robertson T, Stringer BW, Rich JN, Lathia JD, Campbell KP, Boyd AW. P01.07 The Dystroglycan Complex Promotes Mesenchymal-Like Glioblastoma through Interaction with EphA Receptor Tyrosine Kinases. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.083] [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: 11/12/2022] Open
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16
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Droege G, Barker K, Seberg O, Coddington J, Benson E, Berendsohn WG, Bunk B, Butler C, Cawsey EM, Deck J, Döring M, Flemons P, Gemeinholzer B, Güntsch A, Hollowell T, Kelbert P, Kostadinov I, Kottmann R, Lawlor RT, Lyal C, Mackenzie-Dodds J, Meyer C, Mulcahy D, Nussbeck SY, O'Tuama É, Orrell T, Petersen G, Robertson T, Söhngen C, Whitacre J, Wieczorek J, Yilmaz P, Zetzsche H, Zhang Y, Zhou X. The Global Genome Biodiversity Network (GGBN) Data Standard specification. Database (Oxford) 2016; 2016:baw125. [PMID: 27694206 PMCID: PMC5045859 DOI: 10.1093/database/baw125] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 08/09/2016] [Indexed: 11/24/2022]
Abstract
Genomic samples of non-model organisms are becoming increasingly important in a broad range of studies from developmental biology, biodiversity analyses, to conservation. Genomic sample definition, description, quality, voucher information and metadata all need to be digitized and disseminated across scientific communities. This information needs to be concise and consistent in today’s ever-increasing bioinformatic era, for complementary data aggregators to easily map databases to one another. In order to facilitate exchange of information on genomic samples and their derived data, the Global Genome Biodiversity Network (GGBN) Data Standard is intended to provide a platform based on a documented agreement to promote the efficient sharing and usage of genomic sample material and associated specimen information in a consistent way. The new data standard presented here build upon existing standards commonly used within the community extending them with the capability to exchange data on tissue, environmental and DNA sample as well as sequences. The GGBN Data Standard will reveal and democratize the hidden contents of biodiversity biobanks, for the convenience of everyone in the wider biobanking community. Technical tools exist for data providers to easily map their databases to the standard. Database URL:http://terms.tdwg.org/wiki/GGBN_Data_Standard
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Affiliation(s)
- G Droege
- Botanic Garden and Botanical Museum Berlin-Dahlem, Freie Universität Berlin, Königin-Luise-Str. 6-8, Berlin 14195, Germany
| | - K Barker
- National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA
| | - O Seberg
- Natural History Museum of Denmark, University of Copenhagen, Sølvgade 83, opg. S, Copenhagen DK-1307, Denmark
| | - J Coddington
- National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA
| | - E Benson
- Damar Research Scientists, Damar, Drum Road, Cuparmuir, Fife KY15 5RJ, UK
| | - W G Berendsohn
- Botanic Garden and Botanical Museum Berlin-Dahlem, Freie Universität Berlin, Königin-Luise-Str. 6-8, Berlin 14195, Germany
| | - B Bunk
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstr. 7B, Braunschweig 38124, Germany
| | - C Butler
- National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA
| | - E M Cawsey
- Australian National Wildlife Collection, CSIRO National Research Collections Australia, Canberra, Australia
| | - J Deck
- Berkeley Natural History Museums, University of California at Berkeley, Berkeley, CA 94720, USA
| | - M Döring
- Global Biodiversity Information Facility Secretariat, Universitetsparken 15, Copenhagen DK-2100, Denmark
| | - P Flemons
- Australian Museum, Sydney 2010, NSW, Australia
| | - B Gemeinholzer
- Systematic Botany, Justus Liebig University, Giessen 35392, Germany
| | - A Güntsch
- Botanic Garden and Botanical Museum Berlin-Dahlem, Freie Universität Berlin, Königin-Luise-Str. 6-8, Berlin 14195, Germany
| | - T Hollowell
- National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA
| | - P Kelbert
- Botanic Garden and Botanical Museum Berlin-Dahlem, Freie Universität Berlin, Königin-Luise-Str. 6-8, Berlin 14195, Germany
| | - I Kostadinov
- Department of Life Sciences & Chemistry, Jacobs University Bremen gGmbH, Campus Ring 1, Bremen 28759, Germany
| | - R Kottmann
- Microbial Genomics and Bioinformatics Research Group, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, Bremen 28359, Germany
| | - R T Lawlor
- ARC-Net Applied Research on Cancer Centre, Department of Pathology and Diagnostics, University of Verona, Verona 37134, Italy
| | - C Lyal
- Natural History Museum, Cromwell Road, London SW7 5BD, UK
| | | | - C Meyer
- National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA
| | - D Mulcahy
- National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA
| | - S Y Nussbeck
- Department of Medical Informatics and UMG Biobank, University Medical Center Göttingen, Robert-Koch-Str. 40, Göttingen 37075, Germany
| | - É O'Tuama
- Global Biodiversity Information Facility Secretariat, Universitetsparken 15, Copenhagen DK-2100, Denmark
| | - T Orrell
- National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA
| | - G Petersen
- Natural History Museum of Denmark, University of Copenhagen, Sølvgade 83, opg. S, Copenhagen DK-1307, Denmark
| | - T Robertson
- Global Biodiversity Information Facility Secretariat, Universitetsparken 15, Copenhagen DK-2100, Denmark
| | - C Söhngen
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstr. 7B, Braunschweig 38124, Germany
| | - J Whitacre
- National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, USA
| | - J Wieczorek
- Museum of Vertebrate Zoology, University of California at Berkeley, Berkeley, CA 94720, USA
| | - P Yilmaz
- Microbial Genomics and Bioinformatics Research Group, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, Bremen 28359, Germany
| | - H Zetzsche
- Julius Kuehn-Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Resistance Research and Stress Tolerance, Erwin-Baur-Str. 27, Quedlinburg 06484, Germany
| | - Y Zhang
- China National GeneBank, BGI-Shenzhen, Shenzhen, Guangdong 518083, China
| | - X Zhou
- China National GeneBank, BGI-Shenzhen, Shenzhen, Guangdong 518083, China
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Ioannides ZA, Henderson RD, Robertson T, Davis M, McCombe PA. When does ALS start? A novel SOD-1 p.Gly142Arg mutation causing motor neurone disease with prominent premorbid cramps and spasms. J Neurol Neurosurg Psychiatry 2016; 87:1031-2. [PMID: 26341325 DOI: 10.1136/jnnp-2015-311582] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 08/19/2015] [Indexed: 12/25/2022]
Affiliation(s)
- Z A Ioannides
- Centre for Clinical Research, The University of Queensland Centre for Clinical Research, Brisbane, Queensland, Australia Department of Neurology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - R D Henderson
- Department of Neurology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - T Robertson
- Anatomical Pathology, Queensland Pathology, Brisbane, Queensland, Australia
| | - M Davis
- Department of Diagnostic Genomics, PathWest Laboratory Medicine WA, QEII Medical Centre, Perth, Western Australia, Australia
| | - P A McCombe
- Centre for Clinical Research, The University of Queensland Centre for Clinical Research, Brisbane, Queensland, Australia Department of Neurology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
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Wong LY, Wong A, Robertson T, Burns K, Roberts M, Isbister GK. Severe Hypertension and Bradycardia Secondary to Midodrine Overdose. J Med Toxicol 2016; 13:88-90. [PMID: 27417951 DOI: 10.1007/s13181-016-0574-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 05/18/2016] [Revised: 07/05/2016] [Accepted: 07/06/2016] [Indexed: 10/21/2022] Open
Abstract
The objective of this case is to describe the pharmacokinetics and toxicity of midodrine in overdose. A 20 year old female ingested up to 350 mg midodrine while recovering in hospital from another overdose. She developed vomiting and severe hypertension (blood pressure [BP], 210/100 mmHg). Remarkable findings included a heart rate with a range of 43-60 beats/min, spontaneous respirations (20 breaths/min), and oxygen saturations of >95 % on FiO2 25 %, and a GS of 8. She was admitted to intensive care and had a normal non-contrast CT brain. She was treated with a glyceryl trinitrate patch (5 mg) and observed for 36 h with subsequent BP reduction to 124/81 mmHg and improved in conscious state. Midodrine and desglymidodrine concentrations were measured with liquid chromatography tandem mass spectrometry and were detected with 2-h post-ingestion at concentrations of 158.4 and 169.7 ng/mL, respectively. The parent drug concentrations rapidly decreased with an elimination of half-life of 1.6 h, and the metabolite initially increased and then decreased. The peak in blood pressure appeared to coincide with peak metabolite concentrations. Midodrine in overdose can potentially cause severe hypertension and reflex bradycardia but given its short half-life treatment with vasodilator agents and supportive care is sufficient.
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Affiliation(s)
- L Y Wong
- Victorian Poisons Information Centre and Austin Toxicology Service, Austin Hospital, Victoria, Australia
| | - A Wong
- Victorian Poisons Information Centre and Austin Toxicology Service, Austin Hospital, Victoria, Australia.
- School of Clinical Sciences, Monash University, Victoria, Australia.
- Department of Surgery, University of Melbourne, Parkville, VIC, Australia.
| | - T Robertson
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - K Burns
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - M Roberts
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - G K Isbister
- Clinical Toxicology Research Group, University of Newcastle, Newcastle, Australia
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Jiang S, Robertson T, Mostajeran M, Robertson AJ, Qiu X. Differential gene expression of two extreme honey bee (Apis mellifera) colonies showing varroa tolerance and susceptibility. Insect Mol Biol 2016; 25:272-282. [PMID: 26919127 DOI: 10.1111/imb.12217] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Varroa destructor, an ectoparasitic mite of honey bees (Apis mellifera), is the most serious pest threatening the apiculture industry. In our honey bee breeding programme, two honey bee colonies showing extreme phenotypes for varroa tolerance/resistance (S88) and susceptibility (G4) were identified by natural selection from a large gene pool over a 6-year period. To investigate potential defence mechanisms for honey bee tolerance to varroa infestation, we employed DNA microarray and real time quantitative (PCR) analyses to identify differentially expressed genes in the tolerant and susceptible colonies at pupa and adult stages. Our results showed that more differentially expressed genes were identified in the tolerant bees than in bees from the susceptible colony, indicating that the tolerant colony showed an increased genetic capacity to respond to varroa mite infestation. In both colonies, there were more differentially expressed genes identified at the pupa stage than at the adult stage, indicating that pupa bees are more responsive to varroa infestation than adult bees. Genes showing differential expression in the colony phenotypes were categorized into several groups based on their molecular functions, such as olfactory signalling, detoxification processes, exoskeleton formation, protein degradation and long-chain fatty acid metabolism, suggesting that these biological processes play roles in conferring varroa tolerance to naturally selected colonies. Identification of differentially expressed genes between the two colony phenotypes provides potential molecular markers for selecting and breeding varroa-tolerant honey bees.
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Affiliation(s)
- S Jiang
- Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK, Canada
| | - T Robertson
- Meadow Ridge Enterprises Ltd, Saskatoon, SK, Canada
| | - M Mostajeran
- Meadow Ridge Enterprises Ltd, Saskatoon, SK, Canada
| | | | - X Qiu
- Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK, Canada
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Robertson T, Estrade M, Gracey E, Smith K. The Realities of Public Health Collaborative Research with the Non-Profit and Voluntary Sector. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv175.082] [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: 11/14/2022] Open
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Ioannides ZA, McGill J, Robertson T, Henderson RD. Neurological disorders that may deteriorate with intensive physical rehabilitation. Intern Med J 2015; 45:1193-5. [PMID: 26347994 DOI: 10.1111/imj.12903] [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] [Received: 03/12/2015] [Accepted: 06/06/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Z A Ioannides
- Department of Neurology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - J McGill
- Lady Cilento Children's Hospital, Brisbane, Queensland, Australia
| | - T Robertson
- Department of Anatomical Pathology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
| | - R D Henderson
- Department of Neurology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia
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Robertson T, Estrade M, Gracey E, Smith K. PP54 The realities of public health collaborative research with the non-profit and voluntary sector: viewpoints from policy, practice and research. Br J Soc Med 2015. [DOI: 10.1136/jech-2015-206256.151] [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: 11/03/2022]
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Truong HM, Fatch R, Nguyen B, Grasso M, Robertson T, Raymond HF, McFarland W. O20.4 Transmission risk beliefs influence sexual risk behaviour of hiv-positive msm. Br J Vener Dis 2015. [DOI: 10.1136/sextrans-2015-052270.190] [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: 11/04/2022]
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Alhaddad B, Smith FJ, Robertson T, Watman G, Taylor KMG. Patients' practices and experiences of using nebuliser therapy in the management of COPD at home. BMJ Open Respir Res 2015; 2:e000076. [PMID: 25806114 PMCID: PMC4360584 DOI: 10.1136/bmjresp-2014-000076] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 01/29/2015] [Accepted: 02/04/2015] [Indexed: 11/23/2022] Open
Abstract
Background and aim How patients use their nebulisers at home is vital to ensure effective treatment and optimal health outcomes for patients with chronic obstructive pulmonary disease (COPD). The aim of the study was to identify the practicalities and problems associated with nebuliser use by patients with COPD at home, which may impact on the safety and effectiveness of therapy. Design and setting A cross-sectional descriptive study in which participants were recruited from two levels of care: primary care, involving 38 GP practices in North West London, and intermediate care with a major acute hospital. Method In-depth interviews were conducted with a representative sample of 50 patients with COPD using nebulisers in their home, recruited from general practice populations and at hospital discharge. A checklist was used to record activities and patients demonstrated use of their nebuliser. Qualitative procedures were employed to identify the range of problems experienced with nebuliser use. Results A wide range of practical issues was identified at all stages: problems prior to nebulisation: setting up equipment, lack of instructions, manual dexterity and time required. Problems during medication administration: inhalation technique, duration of nebulisation and understanding how to achieve optimal efficacy. Problems post-administration: inadequate cleaning of nebuliser components, access to accessories and use of damaged parts or self-repairs. Other problems included noise, weight and non-portability of equipment. Conclusions Patients with COPD using nebulisers at home experienced problems with all aspects, many of which may be anticipated to compromise clinical outcomes. Healthcare providers should be aware of these problems to effectively support patients with COPD with the use of their nebulisers at home.
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Affiliation(s)
- B Alhaddad
- Public Authority for Applied Education & Training , College of Health Sciences , Shuwaikh , Kuwait
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Henry M, Robertson T. Antenatal diagnosis, associations and outcomes of vascular rings. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.725] [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: 10/23/2022]
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Hewson KA, Robertson T, Steer PA, Devlin JM, Noormohammadi AH, Ignjatovic J. Assessment of the potential relationship between egg quality and infectious bronchitis virus infection in Australian layer flocks. Aust Vet J 2014; 92:132-8. [PMID: 24673141 PMCID: PMC7159702 DOI: 10.1111/avj.12156] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2013] [Indexed: 11/28/2022]
Abstract
Objective This investigation aimed to determine if there was a relationship between the production of eggs with poor internal quality, as measured by poor Haugh units, by Australian layer flocks and the detection of infectious bronchitis virus (IBV) in the hens. Other risk factors including flock size, flock type, flock age, chicken breed and vaccination frequency were also assessed. Methods The study group comprised 17 flocks from 14 farms. Data relating to the factors investigated were requested on a regular basis. The Haugh unit data were used to grade eggs as good or poor based on the age and flock at the time of data collection. Cloacal swabs were collected from 20 chickens in each flock approximately every 6 weeks. Results IBV was detected from a majority of the flocks and in 68% of cases the IBV strain detected was an A‐vaccine‐related field strain. Three variant strains were detected. Detection of IBV in a flock, the farm type and flock size were identified as potential risk factors for the production of eggs with poor Haugh units. Conclusion IBV is prevalent in Australian layer flocks, but infection was primarily subclinical. The results complement previous reports indicating that there are many potential risk factors for the production of eggs with poor Haugh units.
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Affiliation(s)
- K A Hewson
- Department of Veterinary Science, The University of Melbourne, 250 Princes Highway, Werribee, Victoria, 3030, Australia.
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Tittensor DP, Walpole M, Hill SLL, Boyce DG, Britten GL, Burgess ND, Butchart SHM, Leadley PW, Regan EC, Alkemade R, Baumung R, Bellard C, Bouwman L, Bowles-Newark NJ, Chenery AM, Cheung WWL, Christensen V, Cooper HD, Crowther AR, Dixon MJR, Galli A, Gaveau V, Gregory RD, Gutierrez NL, Hirsch TL, Hoft R, Januchowski-Hartley SR, Karmann M, Krug CB, Leverington FJ, Loh J, Lojenga RK, Malsch K, Marques A, Morgan DHW, Mumby PJ, Newbold T, Noonan-Mooney K, Pagad SN, Parks BC, Pereira HM, Robertson T, Rondinini C, Santini L, Scharlemann JPW, Schindler S, Sumaila UR, Teh LSL, van Kolck J, Visconti P, Ye Y. A mid-term analysis of progress toward international biodiversity targets. Science 2014; 346:241-4. [DOI: 10.1126/science.1257484] [Citation(s) in RCA: 807] [Impact Index Per Article: 80.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Robertson T, Benzeval M, Whitley E, Popham F. The role of material, psychological and behavioural factors in mediating the association between socioeconomic position and allostatic load: Evidence from the 1950s cohort of the West of Scotland Twenty-07 Study. Eur J Public Health 2014. [DOI: 10.1093/eurpub/cku151.005] [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: 11/12/2022] Open
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Robertson T, Benzeval M, Whitley E, Popham F. OP15 The role of material, psychological and behavioural factors in mediating the association between socio-economic position and allostatic load: Evidence from the 1950s cohort of the West of Scotland Twenty-07 Study. Br J Soc Med 2014. [DOI: 10.1136/jech-2014-204726.18] [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: 11/03/2022]
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Credille BC, Woolums AR, Giguère S, Robertson T, Overton MW, Hurley DJ. Prevalence of bacteremia in dairy cattle with acute puerperal metritis. J Vet Intern Med 2014; 28:1606-12. [PMID: 25103694 PMCID: PMC4895591 DOI: 10.1111/jvim.12418] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 05/21/2014] [Accepted: 06/17/2014] [Indexed: 11/29/2022] Open
Abstract
Background Acute puerperal metritis (APM) affects 30% of postpartum dairy cattle. Bacteremia negatively impacts survival in cattle with coliform mastitis. However, the prevalence of bacteremia in dairy cattle with APM is unknown. Hypothesis Bacteremia is detectable in a large proportion of cattle with APM. Animals Seventeen dairy cows with APM and 17 healthy dairy cattle. Methods Prospective case‐control study. Cases were identified by daily monitoring of cattle in the first 10 days after calving. Controls were matched to cases by parity and days in milk. Cows were examined at the time of identification of APM. A complete blood count, serum biochemical analysis, and bacteriologic culture of blood and lochial fluid were performed on each animal at the time of diagnosis. The same samples were collected from healthy herdmates of a similar parity and days in milk. Blood culture results and clinicopathologic variables were compared between groups. Conditional logistic regression was used to evaluate factors associated with APM, whereas multivariate logistic regression was used to evaluate factors associated with bacteremia. Results Bacteremia occurred in 53% (9/17) of cattle with APM and 53% (8/15) controls. Bacillus spp. was the organism most commonly isolated from the bloodstream in cattle of both groups. Bacteremic cattle in both groups were significantly less likely to have basophils in the peripheral circulation (P = .02) and more likely to have higher serum globulin concentrations (P = .02). Conclusions and Clinical Importance Bacteremia is a common occurrence in postpartum dairy cattle. Further study is warranted to investigate the modes by which bacteria colonize the bloodstream in this population of animals and the importance of bacteremia on health and productivity of affected animals.
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Affiliation(s)
- B C Credille
- Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA
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Collins JT, Narayana MJ, Morris K, Casey J, Inglis PL, Cheuk R, Rajah T, Robertson T, Kennedy GA. Adult medulloblastoma: feasibility and effectiveness of utilising high-dose chemotherapy with autologous stem cell rescue in newly diagnosed patients. Intern Med J 2014; 44:209-10. [PMID: 24528821 DOI: 10.1111/imj.12341] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 10/08/2013] [Indexed: 11/29/2022]
Affiliation(s)
- J T Collins
- Royal Brisbane & Women's Hospital, Queensland, Australia
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Blum S, Robertson T, Klingberg S, Henderson RD, McCombe P. Atypical clinical presentations of the A3243G mutation, usually associated with MELAS. Intern Med J 2013; 41:199-202. [PMID: 22747555 DOI: 10.1111/j.1445-5994.2010.02379.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Mitochondrial myopathy, encephalopathy, lactic acidosis and stroke-like episodes (MELAS) is a clinical syndrome associated with mitochondrial abnormalities. In approximately 80% of patients, the syndrome is associated with the A3243G mutation. However, it has been realized that the A3243G mutation is not uncommon in the general population and is found in many patients with clinical presentations other than MELAS. We present four patients who presented with rhabdomyolysis, muscle fatigue, external ophthalmoplegia and myoclonic jerks respectively. These patients were all found to have the A3243G mutation on muscle biopsy. These patients illustrate the variety of presentations associated with A3243G mutation.
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Affiliation(s)
- S Blum
- Department of Neurology, Royal Brisbane and Women's Hospital, Brisbane, Queensland, Australia.
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Anstadt M, Brosius J, Robertson T, Milner R. Anticoagulation is Unnecessary for Most Patients With Calf Vein Thrombosis. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.351] [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: 11/29/2022]
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DiCarlo L, Moon G, Intondi A, Duck R, Frank J, Hafazi H, Behzadi Y, Robertson T, Costello B, Savage G, Zdeblick M. A Digital Health Solution for Using and Managing Medications: Wirelessly Observed Therapy. IEEE Pulse 2012; 3:23-6. [DOI: 10.1109/mpul.2012.2205777] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Pearce P, Robertson T, Ortiz-Gomez J, Rajah T, Tollesson G. Multifocal supratentorial diffuse glioma in a young patient with Ollier disease. J Clin Neurosci 2012; 19:477-8. [DOI: 10.1016/j.jocn.2011.06.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2011] [Accepted: 06/08/2011] [Indexed: 11/29/2022]
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Green M, Robertson T, Espie C, Benzeval M. P2-103 Is the socioeconomic patterning of type II diabetes mediated by sleeping problems? Evidence from the west of Scotland. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976i.38] [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: 11/04/2022]
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Robertson T, Benzeval M. P1-306 The influence of childhood developmental plasticity and socioeconomic circumstances on adult health biomarkers: longitudinal evidence from the west of Scotland twenty-07 study. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976e.98] [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: 11/03/2022]
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Robertson T, Bibby S, O’Rourke D, Belfiore T, Agnew-Crumpton R, Noormohammadi A. Identification of chlamydial species in crocodiles and chickens by PCR-HRM curve analysis. Vet Microbiol 2010; 145:373-9. [DOI: 10.1016/j.vetmic.2010.04.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2009] [Revised: 04/08/2010] [Accepted: 04/09/2010] [Indexed: 10/19/2022]
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Robertson T, Bibby S, O'Rourke D, Belfiore T, Lambie H, Noormohammadi AH. Characterization of Chlamydiaceae species using PCR and high resolution melt curve analysis of the 16S rRNA gene. J Appl Microbiol 2009; 107:2017-28. [PMID: 19583801 DOI: 10.1111/j.1365-2672.2009.04388.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIM To design a rapid diagnostic test to differentiate species belonging to the family Chlamydiaceae. METHODS AND RESULTS Five oligonucleotide sets each targeting various conserved regions of the genome of six species (Chlamydia muridarum, C. suis, C. trachomatis, Chlamydophila felis, Cp. pneumoniae and Cp. psittaci) belonging to the family Chlamydiaceae were tested for their suitability for polymerase chain reaction (PCR) and high resolution melt (HRM) curve analysis to differentiate Chlamydiaceae species. Three of the oligonucleotide sets were able to detect all six reference species used in this study, but only one set (16SG) could clearly differentiate between them by HRM curve analysis. The PCR-HRM curve analysis confidence percentages correlated strongly with the nucleotide sequence identities. Clinical specimens from a number of animal species suspected of chlamydiosis were tested with the newly developed 16SG PCR-HRM curve analysis and sequenced to confirm the infecting species. It was demonstrated that PCR-HRM using the 16SG oligonucleotide set could relate the infecting Chlamydiaceae species to the most similar (based on 16S rRNA gene nucleotide sequence) reference species tested. Although Cp. pecorum was not included initially as a reference species in this assay, inclusion of a field isolate of Cp. pecorum as a reference allowed two koala specimens to be correctly identified. CONCLUSION PCR-HRM analysis using the oligonucleotide set 16SG is a robust, simple and rapid technique for differentiation of at least the Chlamydiaceae species used in this study. SIGNIFICANCE AND IMPACT OF THE STUDY This technique allowed for the rapid detection and identification of the six Chlamydiaceae reference species and may be useful for identification of uncharacterized Chlamydiaceae species or for use in animal species where occurrence of the disease has not been fully investigated.
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Affiliation(s)
- T Robertson
- School of Veterinary Science, The University of Melbourne, Werribee, Victoria, Australia
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Dancer CM, Woods ML, Henderson RD, Robertson T, Mungomery M, Allworth A. Mollaret's meningitis and pituitary failure associated with a Rathke's cleft cyst. Intern Med J 2009; 38:609-11. [PMID: 18715308 DOI: 10.1111/j.1445-5994.2008.01709.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wong KT, Robertson T, Ong BB, Chong JW, Yaiw KC, Wang LF, Ansford AJ, Tannenberg A. Human Hendra virus infection causes acute and relapsing encephalitis. Neuropathol Appl Neurobiol 2008; 35:296-305. [PMID: 19473296 DOI: 10.1111/j.1365-2990.2008.00991.x] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIM To study the pathology of two cases of human Hendra virus infection, one with no clinical encephalitis and one with relapsing encephalitis. METHODS Autopsy tissues were investigated by light microscopy, immunohistochemistry and in situ hybridization. RESULTS In the patient with acute pulmonary syndrome but not clinical acute encephalitis, vasculitis was found in the brain, lung, heart and kidney. Occasionally, viral antigens were demonstrated in vascular walls but multinucleated endothelial syncytia were absent. In the lung, there was severe inflammation, necrosis and viral antigens in type II pneumocytes and macrophages. The rare kidney glomerulus showed inflammation and viral antigens in capillary walls and podocytes. Discrete necrotic/vacuolar plaques in the brain parenchyma were associated with antigens and viral RNA. Brain inflammation was mild although CD68(+) microglia/macrophages were significantly increased. Cytoplasmic viral inclusions and antigens and viral RNA in neurones and ependyma suggested viral replication. In the case of relapsing encephalitis, there was severe widespread meningoencephalitis characterized by neuronal loss, macrophages and other inflammatory cells, reactive blood vessels and perivascular cuffing. Antigens and viral RNA were mainly found in neurones. Vasculitis was absent in all the tissues examined. CONCLUSIONS The case of acute Hendra virus infection demonstrated evidence of systemic infection and acute encephalitis. The case of relapsing Hendra virus encephalitis showed no signs of extraneural infection but in the brain, extensive inflammation and infected neurones were observed. Hendra virus can cause acute and relapsing encephalitis and the findings suggest that the pathology and pathogenesis are similar to Nipah virus infection.
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Affiliation(s)
- K T Wong
- Department of Pathology, University of Malaya, Kuala Lumpur, Malaysia.
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Warren D, Robertson T, Bickler P. Neuronal apoptosis and degeneration during forced submergence in painted turtles at 20 °C. Comp Biochem Physiol A Mol Integr Physiol 2008. [DOI: 10.1016/j.cbpa.2008.04.238] [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: 10/21/2022]
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Anandacoomaraswamy KS, Dutton N, Rajan GP, Eikelboom RH, Atlas MD, Robertson T. Utilization of fresh human tympanic membranes for structural analysis and cytokeratin immunocytochemistry implementing resin techniques. Acta Otolaryngol 2006; 126:149-53. [PMID: 16428191 DOI: 10.1080/00016480500312596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
CONCLUSIONS The results of this study have demonstrated for the first time that tympanic membrane (TM) structure is preserved following removal of fresh, normal tissue from patients undergoing surgery. Greater clarity has been demonstrated using resin sections than in previous studies on paraffin sections. Of particular note, cytokeratin (CK) immunocytochemistry was successfully performed on resin sections, which has not been previously reported. This may have potential applications for future work involving tissues that express CKs. OBJECTIVES To analyse the structure of normal, fresh human TM specimens after surgical removal and to evaluate their CK immunocytochemistry using resin techniques, neither of which have been demonstrated previously. MATERIAL AND METHODS Seven TM specimens were removed during surgery and then preserved in a modified Karnovsky's fixative. Semi-thin and thin sections were examined by means of light and electron microscopy, respectively. For comparison purposes, paraffin block-embedded specimens were also sectioned. CK immunocytochemistry was performed on semi-thin sections using standard immunoperoxidase techniques, with expression being demonstrated using light microscopy. RESULTS The three-layer architecture of the TM was preserved. The morphology of the TM was vastly superior in the semi-thin resin sections than in the thicker paraffin sections. The outer, middle and inner layers were clearly demonstrated. The integrity of the outer epithelial layer was maintained, with an outer keratinizing stratum corneum and underlying stratum granulosum, stratum spinosum and stratum basale layers resting on the basal lamina. The thin inner mucosal layer was also viable, consisting of simple squamous or cuboidal cells. Preservation of the middle lamina propria was achieved, with demonstration of the outer radial and inner circular fibres. CK immunocytochemistry utilizing resin techniques provided excellent staining of CK 7 and 8 in the inner layer, with positive staining of CK 5 and 10 in the outer layer.
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Dunn G, Montgomery MG, Mohammed F, Coker A, Cooper JB, Robertson T, Garcia JL, Bugg TDH, Wood SP. The structure of the C-C bond hydrolase MhpC provides insights into its catalytic mechanism. J Mol Biol 2004; 346:253-65. [PMID: 15663942 DOI: 10.1016/j.jmb.2004.11.033] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2004] [Revised: 11/12/2004] [Accepted: 11/15/2004] [Indexed: 11/26/2022]
Abstract
2-Hydroxy-6-ketonona-2,4-diene-1,9-dioic acid 5,6-hydrolase (MhpC) is a 62 kDa homodimeric enzyme of the phenylpropionate degradation pathway of Escherichia coli. The 2.1 A resolution X-ray structure of the native enzyme determined from orthorhombic crystals confirms that it is a member of the alpha/beta hydrolase fold family, comprising eight beta-strands interconnected by loops and helices. The 2.8 A resolution structure of the enzyme co-crystallised with the non-hydrolysable substrate analogue 2,6-diketo-nona-1,9-dioic acid (DKNDA) confirms the location of the active site in a buried channel including Ser110, His263 and Asp235, postulated contributors to a serine protease-like catalytic triad in homologous enzymes. It appears that the ligand binds in two separate orientations. In the first, the C6 keto group of the inhibitor forms a hemi-ketal adduct with the Ser110 side-chain, the C9 carboxylate group interacts, via the intermediacy of a water molecule, with Arg188 at one end of the active site, while the C1 carboxylate group of the inhibitor comes close to His114 at the other end. In the second orientation, the C1 carboxylate group binds at the Arg188 end of the active site and the C9 carboxylate group at the His114 end. These arrangements implicated His114 or His263 as plausible contributors to catalysis of the initial enol/keto tautomerisation of the substrate but lack of conservation of His114 amongst related enzymes and mutagenesis results suggest that His263 is the residue involved. Variability in the quality of the electron density for the inhibitor amongst the eight molecules of the crystal asymmetric unit appears to correlate with alternative positions for the side-chain of His114. This might arise from half-site occupation of the dimeric enzyme and reflect the apparent dissociation of approximately 50% of the keto intermediate from the enzyme during the catalytic cycle.
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Affiliation(s)
- G Dunn
- Department of Biomolecular Science, University of Southampton, Bassett Crescent East, Southampton, SO16 7PX, UK
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Young J, Barker M, Robertson T, Nasioulas S, Tannenberg A, Buttenshaw RL, Knight N, Jass JR, Leggett BA. A case of myoepithelial carcinoma displaying biallelic inactivation of the tumour suppressor gene APC in a patient with familial adenomatous polyposis. J Clin Pathol 2002; 55:230-1. [PMID: 11896079 PMCID: PMC1769611 DOI: 10.1136/jcp.55.3.230] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [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] [Indexed: 11/04/2022]
Abstract
Familial adenomatous polyposis (FAP) is an autosomal dominant disorder caused by mutation of the APC gene. It is characterised by the appearance of hundreds to thousands of colorectal adenomas in adolescence and the subsequent development of colorectal cancer. Various extracolonic malignancies are associated with FAP, including desmoids and neoplasms of the stomach, duodenum, pancreas, liver, and brain. We present a family affected by FAP with an exon 14 APC mutation displaying two rare extracolonic lesions, a hepatoblastoma and a myoepithelial carcinoma. The hepatoblastoma was found in a male patient aged 2 years. The second lesion, a myoepithelial carcinoma of the right cheek, was found in a female patient aged 14 years. Inactivation of the normal APC allele was demonstrated in this lesion by loss of heterozygosity analysis, thus implicating APC in the initiation or progression of this neoplasm. This is the first reported case of this lesion in a family affected by FAP.
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Affiliation(s)
- J Young
- Conjoint Gastroenterology Laboratory, Clinical Research Centre, Royal Brisbane Hospital Research Foundation, Bancroft Centre, 300 Herston Road, Herston Q4029, Australia
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Forbes A, Haverkamp RG, Robertson T, Bryant J, Bearsley S. Studies of the microstructure of polymer-modified bitumen emulsions using confocal laser scanning microscopy. J Microsc 2001; 204:252-7. [PMID: 11903802 DOI: 10.1046/j.1365-2818.2001.00955.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Polymer-modified bitumen emulsions present a safer and more environmentally friendly binder for enhancing the properties of roads. Cationic bitumen emulsion binders containing polymer latex were investigated using confocal laser scanning microscopy. The latex was incorporated into the bitumen emulsion by using four different addition methods and all emulsions were processed with a conventional colloid mill. The emulsion binder films were studied after evaporation of the emulsion aqueous phase. We show how the microstructure and distribution of the polymer varies within the bitumen binder depending on latex addition method, and that the microstructure of the binder remains intact when exposed to elevated temperature. It was found that a distinctly fine dispersion of polymer results when the polymer is blended into the bitumen before the emulsifying process (a monophase emulsion). In contrast, bi-phase emulsion binders produced by either post-adding the latex to the bitumen emulsion, or by adding the latex into the emulsifier solution phase before processing, or by comilling the latex with the bitumen, water and emulsifier all resulted in a network formation of bitumen particles surrounded by a continuous polymer film. The use of emulsified binders appears to result in a more evenly distributed polymer network compared to the use of hot polymer-modified binders, and they therefore have greater potential for consistent binder cohesion strength, stone retention and therefore improved pavement performance.
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Affiliation(s)
- A Forbes
- ITE, Massey University, Private Bag 11 222, Palmerston North, New Zealand
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Lai CM, Robertson T, Papadimitriou J, Shen WY, Daw N, Constable IJ, Rakoczy PE. Controlled production of active cathepsin D in retinal pigment epithelial cells following adenovirus-mediated gene delivery. Mol Ther 2000; 2:476-84. [PMID: 11082321 DOI: 10.1006/mthe.2000.0195] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The transduction of a low cathepsin D-producing retinal pigment epithelial cell line with a recombinant adenovirus, Ad.proCatD, carrying a viral promoter and the precursor form of the lysosomal enzyme cathepsin D, procathepsin D, led to the upregulation of proCatD expression. However, the resultant aspartic protease activity did not exceed that observed in normal primary human retinal pigment epithelial cells. Following the injection of Ad. proCatD into rat eyes, immunohistochemistry and Western blot analysis localized the expression of procathepsin D to the retinal pigment epithelial cell layer and to the sclera/choroid/retinal epithelial cell layers, respectively. This upregulation of procathepsin D expression was accompanied by a limited increase in aspartic protease activity. The injected eyes did not demonstrate any of the retinal changes that have been associated with the overproduction and secretion of active cathepsin D. Immunoelectronmicroscopy of Ad.proCatD-transduced retinal pigment epithelial cells demonstrated the presence of cathepsin D not only in cytoplasmic vesicles and lysosomes but also in the nucleoli and, less strongly, elsewhere in euchromatic regions of some 10% of cells. In spite of the upregulated expression of procathepsin D, the production of active cathepsin D in Ad.proCatD-transduced retinal pigment epithelial cells was strictly controlled. It is proposed that active cathepsin D production is controlled at the point of posttranslational modification by an intranuclear feedback mechanism initiated by the relative excess of procathepsin D in Ad. proCatD-transduced retinal pigment epithelial cells.
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Affiliation(s)
- C M Lai
- Center for Ophthalmology and Visual Science, Lions Eye Institute, Nedlands, 6009, Australia
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Lee E, Robertson T, Smith J, Kilfeather S. Leukotriene receptor antagonists and synthesis inhibitors reverse survival in eosinophils of asthmatic individuals. Am J Respir Crit Care Med 2000; 161:1881-6. [PMID: 10852761 DOI: 10.1164/ajrccm.161.6.9907054] [Citation(s) in RCA: 132] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Eosinophilia is a feature of airway inflammation associated with asthma. Leukotriene antagonists provide therapeutic benefit in asthma, but their potential antiinflammatory actions have not been fully explored. We have examined the role of eosinophil-derived cysteinyl leukotrienes in the maintenance of eosinophil survival, and the involvement of leukotrienes in the paracrine stimulation of eosinophil survival by mast cells and lymphocytes. We obtained eosinophils and autologous lymphocytes from peripheral blood of asthmatic subjects. Leukotriene (LT)-B(4), LTC(4) and LTD(4), granulocyte-macrophage colony-stimulating factor (GM-CSF), and fibronectin promoted eosinophil survival. LTD(4) (10(-)(6) M) was as effective as GM-CSF (5 ng/ml) and fibronectin (400 ng/ml) in promoting survival. Lymphocytes and conditioned medium from a human mast cell line (HMC-1) induced eosinophil survival. Blockade of cysteinyl leukotriene receptors with SKF 104353 (pobilukast, 3 nM), and inhibition of 5-lipoxygenase (5-LO) with BW A4C (1 microM) and of 5-LO activating protein with MK 886 (1 microM), all increased basal rates of eosinophil apoptosis and reversed GM-CSF-induced eosinophil survival. Fifty percent reversal of GM-CSF- induced survival was achieved with SKF 104353 at 0.3 nM. The potency of SKF 104353 was two orders of magnitude greater than that of the LTB(4) receptor antagonist SB 201146. Mast cell- and lymphocyte-induced eosinophil survival were completely reversed by SB 201146, SKF 104353, BW A4C, and MK 886. These findings provide evidence for the involvement of an autocrine cysteinyl leukotriene pathway that supports eosinophil survival in response to a range of survival stimuli. They also suggest that LTB(4) could act as a paracrine stimulus of eosinophil survival.
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Affiliation(s)
- E Lee
- Institute for Cardiovascular and Respiratory Pharmaceutical Development, School of Sciences, University of Sunderland, Sunderland, United Kingdom
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