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Minihane AM, Murphy KJ. The health benefits and practical considerations for the adoption of a Mediterranean-style dietary pattern. Br J Nutr 2022; 128:1201-1205. [PMID: 35968700 PMCID: PMC9530795 DOI: 10.1017/s0007114522002471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
| | - Karen Joy Murphy
- Clinical and Health Sciences, ARENA, University of South Australia, Adelaide, Australia
- email
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2
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Meggetto O, Jembere N, Gao J, Walker MJ, Rey M, Rabeneck L, Murphy KJ, Kupets R. The impact of the COVID-19 pandemic on the Ontario Cervical Screening Program, colposcopy and treatment services in Ontario, Canada: a population-based study. BJOG 2021; 128:1503-1510. [PMID: 33982870 PMCID: PMC8209864 DOI: 10.1111/1471-0528.16741] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [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] [Accepted: 03/22/2021] [Indexed: 12/02/2022]
Abstract
Objective To describe the immediate impact of the COVID‐19 pandemic on cervical screening, colposcopy and treatment volumes in Ontario, Canada. Design Population‐based retrospective observational study. Setting Ontario, Canada. Population People with a cervix age of 21–69 years who completed at least one cervical screening cytology test, colposcopy or treatment procedure for cervical dysplasia between January 2019 and August 2020. Methods Administrative databases were used to compare cervical screening cytology, colposcopy and treatment procedure volumes before (historical comparator) and during the first 6 months of the COVID‐19 pandemic (March–August 2020). Main outcome measures Changes in cervical screening cytology, colposcopy and treatment volumes; individuals with high‐grade cytology awaiting colposcopy. Results During the first 6 months of the COVID‐19 pandemic, the monthly average number of cervical screening cytology tests, colposcopies and treatments decreased by 63.8% (range: −92.3 to −41.0%), 39.7% (range: −75.1 to −14.3%) and 31.1% (range: −43.5 to −23.6%), respectively, when compared with the corresponding months in 2019. Between March and August 2020, on average 292 (−51.0%) fewer high‐grade cytological abnormalities were detected through screening each month. As of August 2020, 1159 (29.2%) individuals with high‐grade screening cytology were awaiting follow‐up colposcopy. Conclusions The COVID‐19 pandemic has had a substantial impact on key cervical screening and follow‐up services in Ontario. As the pandemic continues, ongoing monitoring of service utilisation to inform system response and recovery is required. Future efforts to understand the impact of COVID‐19‐related disruptions on cervical cancer outcomes will be needed. Tweetable abstract COVID‐19 has had a substantial impact on cervical screening and follow‐up services in Ontario, Canada. COVID‐19 has had a substantial impact on cervical screening and follow‐up services in Ontario, Canada.
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Affiliation(s)
- O Meggetto
- Ontario Health (Cancer Care Ontario), Toronto, ON, Canada
| | - N Jembere
- Ontario Health (Cancer Care Ontario), Toronto, ON, Canada
| | - J Gao
- Ontario Health (Cancer Care Ontario), Toronto, ON, Canada
| | - M J Walker
- Ontario Health (Cancer Care Ontario), Toronto, ON, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - M Rey
- Ontario Health (Cancer Care Ontario), Toronto, ON, Canada
| | - L Rabeneck
- Ontario Health (Cancer Care Ontario), Toronto, ON, Canada.,Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - K J Murphy
- Ontario Health (Cancer Care Ontario), Toronto, ON, Canada.,Trillium Health Partners, Mississauga/Toronto, ON, Canada
| | - R Kupets
- Ontario Health (Cancer Care Ontario), Toronto, ON, Canada.,Division of Gynecologic Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
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Maher CA, Davis CR, Curtis RG, Short CE, Murphy KJ. A Physical Activity and Diet Program Delivered by Artificially Intelligent Virtual Health Coach: Proof-of-Concept Study. JMIR Mhealth Uhealth 2020; 8:e17558. [PMID: 32673246 PMCID: PMC7382010 DOI: 10.2196/17558] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 04/09/2020] [Accepted: 05/05/2020] [Indexed: 01/16/2023] Open
Abstract
Background Poor diet and physical inactivity are leading modifiable causes of death and disease. Advances in artificial intelligence technology present tantalizing opportunities for creating virtual health coaches capable of providing personalized support at scale. Objective This proof of concept study aimed to test the feasibility (recruitment and retention) and preliminary efficacy of physical activity and Mediterranean-style dietary intervention (MedLiPal) delivered via artificially intelligent virtual health coach. Methods This 12-week single-arm pre-post study took place in Adelaide, Australia, from March to August 2019. Participants were inactive community-dwelling adults aged 45 to 75 years, recruited through news stories, social media posts, and flyers. The program included access to an artificially intelligent chatbot, Paola, who guided participants through a computer-based individualized introductory session, weekly check-ins, and goal setting, and was available 24/7 to answer questions. Participants used a Garmin Vivofit4 tracker to monitor daily steps, a website with educational materials and recipes, and a printed diet and activity log sheet. Primary outcomes included feasibility (based on recruitment and retention) and preliminary efficacy for changing physical activity and diet. Secondary outcomes were body composition (based on height, weight, and waist circumference) and blood pressure. Results Over 4 weeks, 99 potential participants registered expressions of interest, with 81 of those screened meeting eligibility criteria. Participants completed a mean of 109.8 (95% CI 1.9-217.7) more minutes of physical activity at week 12 compared with baseline. Mediterranean diet scores increased from a mean of 3.8 out of 14 at baseline, to 9.6 at 12 weeks (mean improvement 5.7 points, 95% CI 4.2-7.3). After 12 weeks, participants lost an average 1.3 kg (95% CI –0.1 to –2.5 kg) and 2.1 cm from their waist circumference (95% CI –3.5 to –0.7 cm). There were no significant changes in blood pressure. Feasibility was excellent in terms of recruitment, retention (90% at 12 weeks), and safety (no adverse events). Conclusions An artificially intelligent virtual assistant-led lifestyle-modification intervention was feasible and achieved measurable improvements in physical activity, diet, and body composition at 12 weeks. Future research examining artificially intelligent interventions at scale, and for other health purposes, is warranted.
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Affiliation(s)
- Carol Ann Maher
- Alliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South Australia, Adelaide, Australia
| | - Courtney Rose Davis
- Alliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South Australia, Adelaide, Australia
| | - Rachel Grace Curtis
- Alliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South Australia, Adelaide, Australia
| | - Camille Elizabeth Short
- Melbourne Centre for Behaviour Change, School of Psychological Sciences and School of Health Sciences, University of Melbourne, Melbourne, Australia
| | - Karen Joy Murphy
- Alliance for Research in Exercise, Nutrition and Activity, Clinical and Health Sciences, University of South Australia, Adelaide, Australia
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Marković I, Hooley CA, Clark OJ, Mazzola F, Watson MD, Riley JM, Volckaert K, Underwood K, Dyer MS, Murgatroyd PAE, Murphy KJ, Fèvre PL, Bertran F, Fujii J, Vobornik I, Wu S, Okuda T, Alaria J, King PDC. Weyl-like points from band inversions of spin-polarised surface states in NbGeSb. Nat Commun 2019; 10:5485. [PMID: 31792208 PMCID: PMC6888910 DOI: 10.1038/s41467-019-13464-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 11/08/2019] [Indexed: 11/09/2022] Open
Abstract
Band inversions are key to stabilising a variety of novel electronic states in solids, from topological surface states to the formation of symmetry-protected three-dimensional Dirac and Weyl points and nodal-line semimetals. Here, we create a band inversion not of bulk states, but rather between manifolds of surface states. We realise this by aliovalent substitution of Nb for Zr and Sb for S in the ZrSiS family of nonsymmorphic semimetals. Using angle-resolved photoemission and density-functional theory, we show how two pairs of surface states, known from ZrSiS, are driven to intersect each other near the Fermi level in NbGeSb, and to develop pronounced spin splittings. We demonstrate how mirror symmetry leads to protected crossing points in the resulting spin-orbital entangled surface band structure, thereby stabilising surface state analogues of three-dimensional Weyl points. More generally, our observations suggest new opportunities for engineering topologically and symmetry-protected states via band inversions of surface states.
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Affiliation(s)
- I Marković
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom.,Max Planck Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40, 01187, Dresden, Germany
| | - C A Hooley
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom
| | - O J Clark
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom
| | - F Mazzola
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom
| | - M D Watson
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom
| | - J M Riley
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom
| | - K Volckaert
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom
| | - K Underwood
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom
| | - M S Dyer
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, United Kingdom
| | - P A E Murgatroyd
- Department of Physics, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - K J Murphy
- Department of Physics, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - P Le Fèvre
- Synchrotron SOLEIL, CNRS-CEA, L'Orme des Merisiers, Saint-Aubin-BP48, 91192, Gif-sur-Yvette, France
| | - F Bertran
- Synchrotron SOLEIL, CNRS-CEA, L'Orme des Merisiers, Saint-Aubin-BP48, 91192, Gif-sur-Yvette, France
| | - J Fujii
- Istituto Officina dei Materiali (IOM)-CNR, Laboratorio TASC, Area Science Park, S.S.14, Km 163.5, 34149, Trieste, Italy
| | - I Vobornik
- Istituto Officina dei Materiali (IOM)-CNR, Laboratorio TASC, Area Science Park, S.S.14, Km 163.5, 34149, Trieste, Italy
| | - S Wu
- Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8526, Japan
| | - T Okuda
- Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima, 739-0046, Japan
| | - J Alaria
- Department of Physics, University of Liverpool, Liverpool, L69 7ZE, United Kingdom
| | - P D C King
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom.
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5
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Belleville S, Moussard A, Ansaldo AI, Belchior P, Bherer L, Bier N, Bohbot VD, Bruneau MA, Cuddy LL, Gilbert B, Jokel R, Mahalingam K, McGilton K, Murphy KJ, Naglie G, Rochon E, Troyer AK, Anderson ND. Rationale and protocol of the ENGAGE study: a double-blind randomized controlled preference trial using a comprehensive cohort design to measure the effect of a cognitive and leisure-based intervention in older adults with a memory complaint. Trials 2019; 20:282. [PMID: 31118095 PMCID: PMC6532200 DOI: 10.1186/s13063-019-3250-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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] [Received: 05/27/2018] [Accepted: 02/20/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Leisure activities can be both enjoyable and cognitively stimulating, and participation in such activities has been associated with reduced age-related cognitive decline. Thus, integrating stimulating leisure activities in cognitive training programs may represent a powerful and innovative approach to promote cognition in older adults at risk of dementia. The ENGAGE study is a randomized controlled, double-blind preference trial with a comprehensive cohort design that will test the efficacy and long-term impact of an intervention that combines cognitive training and cognitively stimulating leisure activities. METHODS One hundred and forty-four older adults with a memory complaint will be recruited in Montreal and Toronto. A particular effort will be made to reach persons with low cognitive reserve. Participants will be randomly assigned to one of two conditions: cognitive + leisure training (ENGAGE-MUSIC/SPANISH) or active control (ENGAGE-DISCOVERY). The ENGAGE-MUSIC/SPANISH training will include teaching of mnemonic and attentional control strategies, casual videogames selected to train attention, and classes in music or Spanish as a second language. The ENGAGE-DISCOVERY condition will comprise psychoeducation on cognition and the brain, low-stimulating casual videogames and documentary viewing with discussions. To retain the leisure aspect of the activities, participants will be allowed to exclude either music or Spanish at study entry if they strongly dislike one of these activities. Participants randomized to ENGAGE-MUSIC/SPANISH who did not exclude any activity will be assigned to music or Spanish based on a second random assignment. Training will be provided in 24 2-h sessions over 4 months. Outcomes will be measured at baseline, at 4-month follow-up, and at 24-month follow-up. The primary outcome will be cognitive performance on a composite measure of episodic memory (delayed recall scores for words and face-name associations) measured at baseline and at the 4-month follow-up. Secondary outcomes will include a composite measure of attention (speed of processing, inhibition, dual tasking, and shifting), psychological health, activities of daily living, and brain structure and function and long-term maintenance measured at the 24-month follow-up. Information on cognitive reserve proxies (education and lifestyle questionnaires), sex and genotype (apolipoprotein (Apo)E4, brain-derived neurotrophic factor (BDNF), and catechol-O-methyltransferase (COMT)) will be collected and considered as moderators of training efficacy. DISCUSSION This study will test whether a program combining cognitive training with stimulating leisure activities can increase cognition and reduce cognitive decline in persons at risk of dementia. TRIAL REGISTRATION NCT03271190 . Registered on 5 September 2017.
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Affiliation(s)
- S Belleville
- Université de Montréal, Montreal, Canada. .,Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada.
| | - A Moussard
- Université de Montréal, Montreal, Canada.,Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada
| | - A I Ansaldo
- Université de Montréal, Montreal, Canada.,Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada
| | - P Belchior
- Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada.,McGill University, Montreal, Canada
| | - L Bherer
- Université de Montréal, Montreal, Canada.,Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada
| | - N Bier
- Université de Montréal, Montreal, Canada.,Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada
| | - V D Bohbot
- McGill University, Montreal, Canada.,Douglas Mental Health University Institute, Montreal, Canada
| | - M-A Bruneau
- Université de Montréal, Montreal, Canada.,Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada
| | - L L Cuddy
- Queen's University, Kingston, Canada
| | - B Gilbert
- Research Center, Institut Universitaire de Gériatrie de Montréal, Montreal, Canada
| | - R Jokel
- University of Toronto, Toronto, Canada.,Baycrest Health Sciences, Toronto, Canada
| | | | - K McGilton
- University of Toronto, Toronto, Canada.,Toronto Rehabilitation Institute - the University Health Network, Toronto, Canada
| | - K J Murphy
- University of Toronto, Toronto, Canada.,Baycrest Health Sciences, Toronto, Canada
| | - G Naglie
- University of Toronto, Toronto, Canada.,Baycrest Health Sciences, Toronto, Canada
| | - E Rochon
- University of Toronto, Toronto, Canada.,Toronto Rehabilitation Institute - the University Health Network, Toronto, Canada
| | - A K Troyer
- University of Toronto, Toronto, Canada.,Baycrest Health Sciences, Toronto, Canada
| | - N D Anderson
- University of Toronto, Toronto, Canada.,Baycrest Health Sciences, Toronto, Canada
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6
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Gómez-Donoso C, Martínez-González MA, Gea A, Murphy KJ, Parletta N, Bes-Rastrollo M. A food-based score and incidence of overweight/obesity: The Dietary Obesity-Prevention Score (DOS). Clin Nutr 2018; 38:2607-2615. [PMID: 30522848 DOI: 10.1016/j.clnu.2018.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 07/13/2018] [Revised: 10/18/2018] [Accepted: 11/08/2018] [Indexed: 12/01/2022]
Abstract
BACKGROUND & AIMS Given the enormous health, economic and societal consequences of the obesity pandemic, identifying effective primary prevention strategies represents a global priority. The aim of this study was to provide evidence on the association between adherence to a food-based score reflecting a set of targeted, well-informed, simple dietary recommendations and the incidence of overweight/obesity. METHODS A total of 11,349 initially free of overweight/obesity young adults (mean [SD] age: 34.7 y [10.7]), were followed up biennially during a median of 9.3 years. The Dietary Obesity-Prevention Score (DOS) was created based on a priori evidence of foods associated with weight changes. The DOS positively weighted the consumption of vegetables, fruits, legumes, yogurt, nuts, fish, and a ratio of vegetable to animal protein; whereas the consumption of red meat, processed meat, saturated animal fat, refined grains, ultra-processed food, sugary beverages, beer and spirits were inversely weighted. Energy-adjusted tertiles of each item were used to build the DOS, ranging from 14 (lowest adherence) to 42 points (highest adherence). Adherence to the DOS was calculated at baseline and after 10 years of follow-up. We assessed both incident overweight/obesity (BMI ≥25 kg/m2) and average yearly weight changes in grams per year (g/y). RESULTS During 104,887 person-years, 2153 incident cases of overweight/obesity were identified. A higher adherence to the DOS at baseline was significantly associated with lower risk of future development of overweight/obesity [multivariable-adjusted HR (95% CI) for the highest vs. lowest quintile = 0.63 (0.54-0.74)], with a significant linear dose-response relationship (p for trend < 0.001). When the analyses were updated with repeated measures, the results were similar and remained statistically significant. Consistently, increases in average yearly weight gain were significantly lower with better adherence to the DOS. CONCLUSIONS In this Mediterranean cohort of university graduates, a higher adherence to a food-based score was significantly associated with lower risk of overweight/obesity and lower average annual weight gain. These findings may help counsel patients regarding dietary risks and raise awareness of weight gain before the onset of overweight/obesity.
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Affiliation(s)
- C Gómez-Donoso
- Department of Preventive Medicine and Public Health, University of Navarra, Pamplona, Spain; Biomedical Research Center Network on Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III (ISCIII), Madrid, Spain
| | - M A Martínez-González
- Department of Preventive Medicine and Public Health, University of Navarra, Pamplona, Spain; Biomedical Research Center Network on Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III (ISCIII), Madrid, Spain; Navarra's Health Research Institute (IDISNA), Pamplona, Spain; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, USA
| | - A Gea
- Department of Preventive Medicine and Public Health, University of Navarra, Pamplona, Spain; Biomedical Research Center Network on Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III (ISCIII), Madrid, Spain; Navarra's Health Research Institute (IDISNA), Pamplona, Spain
| | - K J Murphy
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia
| | - N Parletta
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia
| | - M Bes-Rastrollo
- Department of Preventive Medicine and Public Health, University of Navarra, Pamplona, Spain; Biomedical Research Center Network on Physiopathology of Obesity and Nutrition (CIBEROBN), Institute of Health Carlos III (ISCIII), Madrid, Spain; Navarra's Health Research Institute (IDISNA), Pamplona, Spain.
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Watson NA, Dyer KA, Buckley JD, Brinkworth GD, Coates AM, Parfitt G, Howe PRC, Noakes M, Murphy KJ. Comparison of two low-fat diets, differing in protein and carbohydrate, on psychological wellbeing in adults with obesity and type 2 diabetes: a randomised clinical trial. Nutr J 2018; 17:62. [PMID: 29907153 PMCID: PMC6004092 DOI: 10.1186/s12937-018-0367-5] [Citation(s) in RCA: 7] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 05/24/2018] [Indexed: 12/27/2022] Open
Abstract
Background Although higher-protein diets (HP) can assist with weight loss and glycemic control, their effect on psychological wellbeing has not been established. The objective of this study was to compare the effects of a HP and a higher-carbohydrate diet (HC), combined with regular exercise, on psychological wellbeing both during weight loss (WL) and weight maintenance phases (WM). Methods In a parallel RCT, 61 adults with T2D (mean ± SD: BMI 34.3 ± 5.1 kg/m2, aged 55 ± 8 years) consumed a HP diet (29% protein, 34% carbohydrate, 31% fat) or an isocaloric HC diet (21%:48%:24%), with moderate intensity exercise, for 12 weeks of WL and 12 weeks of WM. Secondary data evaluating psychological wellbeing was assessed using: Problems Areas in Diabetes (PAID); Diabetes-39 Quality of Life (D-39); Short Form Health Survey (SF-36); Perceived Stress Scale-10 (PSS-10) and the Leeds Sleep Evaluation Questionnaire (LSEQ) at Weeks 0, 12 and 24 and evaluated with mixed models analysis. Results Independent of diet, improvements for PAID; D-39 diabetes control; D-39 severity of diabetes; SF-36 physical functioning and SF-36 general health were found following WL (d = 0.30 to 0.69, P ≤ 0.04 for all) which remained after 12 weeks of WM. SF-36 vitality improved more in the HP group (group x time interaction P = 0.03). Associations were seen between HbA1c and D-39 severity of diabetes rating (r = 0.30, P = 0.01) and SF-36 mental health (r = − 0.32, P = 0.003) and between weight loss and PAID (r = 0.30, P = 0.01). Conclusion Several improvements in diabetes-related and general psychological wellbeing were seen similarly for both diets following weight loss and a reduction in HbA1c with most of these improvements remaining when weight loss was sustained for 12 weeks. A HP diet may provide additional increases in vitality. Trial registration The trial was prospectively registered with the Australian New Zealand Clinical Trials Registry (ACTRN 12613000008729) on 4 January 2013.
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Affiliation(s)
- Nerylee Ann Watson
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia.
| | - Kathryn Ann Dyer
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | - Jonathan David Buckley
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | - Grant David Brinkworth
- Commonwealth Scientific and Industrial Research Organization - Health and Biosecurity, PO Box 10041, Adelaide, SA, 5000, Australia
| | - Alison Mary Coates
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | - Gaynor Parfitt
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
| | - Peter Ranald Charles Howe
- Clinical Nutrition Research Centre, School of Biomedical Sciences and Pharmacy, University of Newcastle, University Drive, Callaghan, NSW, 2308, Australia.,Institute for Resilient Regions, University of Southern Queensland, Springfield, QLD, 4300, Australia
| | - Manny Noakes
- Commonwealth Scientific and Industrial Research Organization - Health and Biosecurity, PO Box 10041, Adelaide, SA, 5000, Australia
| | - Karen Joy Murphy
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia
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8
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Davis CR, Bryan J, Hodgson JM, Wilson C, Murphy KJ. Older Australians can adhere to a traditional Mediterranean style diet over two weeks: a pilot dietary intervention study. BMC Nutr 2015. [DOI: 10.1186/s40795-015-0021-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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9
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Watson NA, Dyer KA, Buckley JD, Brinkworth GD, Coates AM, Parfitt G, Howe PRC, Noakes M, Dye L, Chadwick H, Murphy KJ. A randomised trial comparing low-fat diets differing in carbohydrate and protein ratio, combined with regular moderate intensity exercise, on glycaemic control, cardiometabolic risk factors, food cravings, cognitive function and psychological wellbeing in adults with type 2 diabetes: Study protocol. Contemp Clin Trials 2015; 45:217-225. [PMID: 26546883 DOI: 10.1016/j.cct.2015.11.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 07/31/2015] [Revised: 10/27/2015] [Accepted: 11/01/2015] [Indexed: 12/20/2022]
Abstract
BACKGROUND Hypocaloric low-fat diets, high in protein with moderate carbohydrate (HP) can enhance weight loss, improve glycaemic control and improve cardiometabolic health risk factors in type 2 diabetes mellitus (T2DM). However, it is unclear whether the metabolic benefits observed during weight loss are sustained during energy-balance and weight maintenance. Furthermore, there is a lack of evidence regarding the effect of HP diets on food cravings, cognitive function and psychological wellbeing in T2DM, despite carbohydrate food cravings, cognitive impairment and depression being associated with hyperglycaemia. METHODS/DESIGN Overweight/obese adults with T2DM were randomised to consume either a HP diet (n=32, ~32% protein, 33% carbohydrate, 30% fat) or a higher-carbohydrate diet (HC, n=29, ~22% protein, 51% carbohydrate, 22% fat) for 24 weeks with 30 min of moderate intensity exercise five days/week for the study duration. There were 2 phases: a 12 week weight loss phase followed by a 12 week weight maintenance phase. Primary outcome was glycaemic control (glycosylated haemoglobin; HbA1c). Secondary outcomes were cardiometabolic risk factors (body composition, fasting blood pressure, blood lipids, glucose, insulin and C-reactive protein), food cravings, cognitive function (memory; psychomotor and executive function and psychological well-being. Outcomes were measured at baseline and the end of each 12-week intervention phase. Data will be analysed as intention-to-treat using linear mixed effects models. CONCLUSION This study will examine the effects of two dietary interventions on health outcomes in T2DM during weight loss and notably following weight maintenance where there is a paucity of evidence.
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Affiliation(s)
- Nerylee Ann Watson
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA 5001, Australia.
| | - Kathryn Ann Dyer
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA 5001, Australia.
| | - Jonathan David Buckley
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA 5001, Australia.
| | - Grant David Brinkworth
- Food and Nutrition, Commonwealth Scientific and Industrial Research Organisation, PO Box 10041, Adelaide, SA 5000, Australia.
| | - Alison Mary Coates
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA 5001, Australia.
| | - Gaynor Parfitt
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA 5001, Australia.
| | - Peter Ranald Charles Howe
- Clinical Nutrition Research Centre, School of Biomedical Sciences and Pharmacy, University of Newcastle, University Drive, Callaghan, NSW 2308, Australia.
| | - Manny Noakes
- Food and Nutrition, Commonwealth Scientific and Industrial Research Organisation, PO Box 10041, Adelaide, SA 5000, Australia.
| | - Louise Dye
- School of Psychology, University of Leeds, Leeds LS2 9JT, United Kingdom.
| | - Helen Chadwick
- School of Psychology, University of Leeds, Leeds LS2 9JT, United Kingdom.
| | - Karen Joy Murphy
- Alliance for Research in Exercise, Nutrition and Activity, Sansom Institute for Health Research, University of South Australia, GPO Box 2471, Adelaide, SA 5001, Australia.
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10
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Sandoval C, Fung-Kee-Fung M, Gilks B, Murphy KJ, Rahal R, Bryant H. Examining the use of salpingectomy with hysterectomy in Canada. ACTA ACUST UNITED AC 2013; 20:173-5. [PMID: 23737686 DOI: 10.3747/co.20.1560] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Ovarian cancer is the fifth leading cause of cancer death among women in Canada, with an estimated 1750 deaths and 2600 new cases occurring in 20121.[...]
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Affiliation(s)
- C Sandoval
- Canadian Partnership Against Cancer, Toronto, ON
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11
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Demsky R, McCuaig J, Maganti M, Murphy KJ, Rosen B, Armel SR. Keeping it simple: genetics referrals for all invasive serous ovarian cancers. Gynecol Oncol 2013; 130:329-33. [PMID: 23707676 DOI: 10.1016/j.ygyno.2013.05.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [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: 01/08/2013] [Revised: 05/01/2013] [Accepted: 05/04/2013] [Indexed: 01/23/2023]
Abstract
OBJECTIVE In the province of Ontario, all women diagnosed with invasive serous ovarian cancer are eligible for genetic testing for mutations in the BRCA1 and BRCA2 genes. This study aimed to determine the proportion of these women who are seen for genetic counseling and to identify potential predictors and barriers to having genetic counseling. METHODS All women who were diagnosed with invasive serous ovarian cancer and had genetic counseling at Princess Margaret Hospital (PMH) between 2002 and 2009 were identified. Logistic regressions and trend analyses explored age at diagnosis, year at diagnosis, and the time between diagnosis and genetic counseling. Genetic counseling outcomes were also examined. RESULTS Of 623 women diagnosed with invasive serous ovarian cancer, 144 (23%) were seen for genetic counseling. As age at diagnosis increased, the likelihood of genetic counseling decreased (p=0.005). With a more recent date of diagnosis, the probability of having genetic counseling increased (p=0.032) while the time to genetic counseling decreased (p=0.001). Of women who pursued genetic testing, 31% were found to have a BRCA1 or BRCA2 mutation, 16% of whom had no family history of breast or ovarian cancer. CONCLUSIONS Despite the availability of genetic testing, only a small proportion of women with invasive serous ovarian cancer were seen for genetic counseling. Over time, an improvement in the proportion of women being seen for genetic counseling was noted; however barriers to seeing women with a later age at diagnosis or those with no family history of breast or ovarian cancer clearly exist.
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Affiliation(s)
- R Demsky
- Division of Gynecologic Oncology, Princess Margaret Hospital, University Health Network, Toronto, Canada.
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12
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Murphy KJ, Crichton GE, Bryan J, Hodgson JM. Mediterranean diet adherence and cognitive functioning in an Australian sample. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.346.3] [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: 11/11/2022]
Affiliation(s)
- Karen Joy Murphy
- Nutritional Physiology Research CentreUniversity of South AustraliaAdelaideSouth AustraliaAustralia
| | - Georgina E Crichton
- Nutritional Physiology Research CentreUniversity of South AustraliaAdelaideSouth AustraliaAustralia
| | - Janet Bryan
- Nutritional Physiology Research CentreUniversity of South AustraliaAdelaideSouth AustraliaAustralia
- Department of Psychology, Social Work and Social PolicyUniversity of South AustraliaAdelaideSouth AustraliaAustralia
| | - Jonathan M Hodgson
- School of Medicine and PharmacologyRoyal Perth HospitalUniversity of Western AustraliaWestern AustraliaAustralia
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13
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Abstract
It is generally believed that neuropsychological patients presenting with visual agnosia, a deficit on object perception/recognition, have suffered damage to the ventral visual cortical pathway (Milner & Goodale, 1995). Rarely has the ability of such patients to perceive the spatial location of objects been investigated-perhaps because "spatial vision" is thought by some researchers to be mediated exclusively by the dorsal visual cortical pathway. Here we present data on spatial perception in a patient DF, who has a profound visual form agnosia. DF and two control subjects were required to make a copy of the spatial arrangement of a target display of five differently coloured circular tokens using a duplicate set of the same tokens. Spatial performance was analysed in two ways: (1) relative location measured the ability to reconstruct the relative spatial relations between the tokens such as left versus right, above versus below, and nearer versus farther; (2) absolute location measured the exact displacement in millimetres of each token's copied position relative to its true location. DF was able to copy some of relative location relations between the tokens although her abilityto do so was not nearly as accurate as that of the control subjects. Nevertheless, DF's limited appreciation of relative location was enough to enable her to discriminate rather well between spatial patterns of tokens. She could not, however, reconstruct the absolute distance relations between the tokens and showed large displacements of token position compared to the control subjects. Interestingly, although Df was not "normal" in her ability to appreciate the allocentric spatial relations between the locations of the tokens relative to one another, she could accurately process token location egocentrically (i.e. relative to her own body and hand position). Thus, like controls, she was perfectly able to point to and touch all the tokens in an array. These results demonstrate deficits in the ability to perceive spatial relations between objects in a patient with visual form agnosia and suggest that the ventral steam also plays a functional role in spatial vision, particularly allocentric spatial vision.
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14
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Abstract
A growing body of observational research suggests that dairy consumption may have a beneficial effect on the metabolic syndrome (MetS). MetS is a clustering of cardiometabolic risk factors within an individual that carries with it an increased risk of developing cardiovascular disease. A systematic search of electronic databases identified cross-sectional studies (n = 10) and prospective cohort studies (n = 3) that assessed dairy intake in relation to MetS. The quality of the included studies was assessed based on study methodology, measurement and reporting of dietary intake, use of standardized MetS diagnostic criteria and statistical analysis. Dairy intake was inversely associated with incidence or prevalence of MetS in seven out of 13 studies. Three studies found no association between dairy and MetS. Three studies reported mixed relationships between specific dairy foods and MetS. The majority of studies suggested a potential benefit of dairy consumption on the risk of having MetS, but methodological differences, potential biases and other limitations in the studies conducted prevent conclusions to be drawn. Future randomized controlled trials are needed to confirm the effect of dairy consumption on MetS.
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Affiliation(s)
- G E Crichton
- Nutritional Physiology Research Centre, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, Australia.
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15
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Cassidy AW, Mulvany SK, Pangalos MN, Murphy KJ, Regan CM. Developmental emergence of reelin deficits in the prefrontal cortex of Wistar rats reared in social isolation. Neuroscience 2009; 166:377-85. [PMID: 20035841 DOI: 10.1016/j.neuroscience.2009.12.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2009] [Revised: 11/03/2009] [Accepted: 12/16/2009] [Indexed: 10/20/2022]
Abstract
As the pathophysiological mechanism(s) of many neuropsychiatric disorders relate to GABAergic interneuron structure and function, we employed isolation rearing of Wistar rats as a model to correlate developmental emergence of cognitive deficits with the expression of reelin-producing interneurons in the medial prefrontal cortex (PFC). Prepulse inhibition deficits emerged at postnatal day 60 and persisted into adulthood. Paralleling the emergence of these neurobehavioural deficits was an increase in reelin production and reelin-immunopositive cells in layer I of the PFC and this later became significantly reduced at postnatal day 80. Cells expressing reelin immunoreactivity in a horizontal orientation were mainly located to the upper regions of layer I whereas those with a vertical orientation, whose arbors extend into cortical layers II and III, were more numerous in the lower regions of layer I and became significantly dysregulated during postnatal development. No behavioural deficits or altered reelin expression was observed at postnatal days 30 or 40. Developmental emergence of neurobehavioural and reelin deficits in isolation reared animals is proposed to reflect maladaptive wiring within the medial prefrontal cortex during a critical maturation period of this circuitry.
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Affiliation(s)
- A W Cassidy
- The Applied Neurotherapeutics Research Group, School of Biomolecular and Biomedical Science, UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland
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16
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Moran RJ, Stephan KE, Kiebel SJ, Rombach N, O'Connor WT, Murphy KJ, Reilly RB, Friston KJ. Bayesian estimation of synaptic physiology from the spectral responses of neural masses. Neuroimage 2008; 42:272-84. [PMID: 18515149 PMCID: PMC2644419 DOI: 10.1016/j.neuroimage.2008.01.025] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.0] [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: 04/13/2007] [Revised: 12/17/2007] [Accepted: 01/05/2008] [Indexed: 11/23/2022] Open
Abstract
We describe a Bayesian inference scheme for quantifying the active physiology of neuronal ensembles using local field recordings of synaptic potentials. This entails the inversion of a generative neural mass model of steady-state spectral activity. The inversion uses Expectation Maximization (EM) to furnish the posterior probability of key synaptic parameters and the marginal likelihood of the model itself. The neural mass model embeds prior knowledge pertaining to both the anatomical [synaptic] circuitry and plausible trajectories of neuronal dynamics. This model comprises a population of excitatory pyramidal cells, under local interneuron inhibition and driving excitation from layer IV stellate cells. Under quasi-stationary assumptions, the model can predict the spectral profile of local field potentials (LFP). This means model parameters can be optimised given real electrophysiological observations. The validity of inferences about synaptic parameters is demonstrated using simulated data and experimental recordings from the medial prefrontal cortex of control and isolation-reared Wistar rats. Specifically, we examined the maximum a posteriori estimates of parameters describing synaptic function in the two groups and tested predictions derived from concomitant microdialysis measures. The modelling of the LFP recordings revealed (i) a sensitization of post-synaptic excitatory responses, particularly marked in pyramidal cells, in the medial prefrontal cortex of socially isolated rats and (ii) increased neuronal adaptation. These inferences were consistent with predictions derived from experimental microdialysis measures of extracellular glutamate levels.
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Affiliation(s)
- R J Moran
- The School of Electrical, Electronic and Mechanical Engineering, University College Dublin, Dublin, Ireland.
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17
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Mellor P, Harvey JR, Murphy KJ, Pye D, O'Boyle G, Lennard TWJ, Kirby JA, Ali S. Modulatory effects of heparin and short-length oligosaccharides of heparin on the metastasis and growth of LMD MDA-MB 231 breast cancer cells in vivo. Br J Cancer 2007; 97:761-8. [PMID: 17726466 PMCID: PMC2360379 DOI: 10.1038/sj.bjc.6603928] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Expression of the chemokine receptor CXCR4 allows breast cancer cells to migrate towards specific metastatic target sites which constitutively express CXCL12. In this study, we determined whether this interaction could be disrupted using short-chain length heparin oligosaccharides. Radioligand competition binding assays were performed using a range of heparin oligosaccharides to compete with polymeric heparin or heparan sulphate binding to I(125) CXCL12. Heparin dodecasaccharides were found to be the minimal chain length required to efficiently bind CXCL12 (71% inhibition; P<0.001). These oligosaccharides also significantly inhibited CXCL12-induced migration of CXCR4-expressing LMD MDA-MB 231 breast cancer cells. In addition, heparin dodecasaccharides were found to have less anticoagulant activity than either a smaller quantity of polymeric heparin or a similar amount of the low molecular weight heparin pharmaceutical product, Tinzaparin. When given subcutaneously in a SCID mouse model of human breast cancer, heparin dodecasaccharides had no effect on the number of lung metastases, but did however inhibit (P<0.05) tumour growth (lesion area) compared to control groups. In contrast, polymeric heparin significantly inhibited both the number (P<0.001) and area of metastases, suggesting a differing mechanism for the action of polymeric and heparin-derived oligosaccharides in the inhibition of tumour growth and metastases.
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Affiliation(s)
- P Mellor
- Breast Cancer Research Group, School of Surgical and Reproductive Sciences, Newcastle University, Newcastle-upon-Tyne, NE2 4HH, UK
| | - J R Harvey
- Breast Cancer Research Group, School of Surgical and Reproductive Sciences, Newcastle University, Newcastle-upon-Tyne, NE2 4HH, UK
| | - K J Murphy
- Department of Chemical and Biological Sciences, University of Huddersfield, Huddersfield, HD1 3DH, UK
| | - D Pye
- Department of Chemical and Biological Sciences, University of Huddersfield, Huddersfield, HD1 3DH, UK
| | - G O'Boyle
- Breast Cancer Research Group, School of Surgical and Reproductive Sciences, Newcastle University, Newcastle-upon-Tyne, NE2 4HH, UK
| | - T W J Lennard
- Breast Cancer Research Group, School of Surgical and Reproductive Sciences, Newcastle University, Newcastle-upon-Tyne, NE2 4HH, UK
| | - J A Kirby
- Breast Cancer Research Group, School of Surgical and Reproductive Sciences, Newcastle University, Newcastle-upon-Tyne, NE2 4HH, UK
- School of Surgical and Reproductive Sciences, 3rd Floor William Leech Building, Framlington Place, University of Newcastle, Newcastle-upon-Tyne NE2 4HH, UK. E-mail:
| | - S Ali
- Breast Cancer Research Group, School of Surgical and Reproductive Sciences, Newcastle University, Newcastle-upon-Tyne, NE2 4HH, UK
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18
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Motamed-Khorasani A, Jurisica I, Letarte M, Shaw PA, Parkes RK, Zhang X, Evangelou A, Rosen B, Murphy KJ, Brown TJ. Differentially androgen-modulated genes in ovarian epithelial cells from BRCA mutation carriers and control patients predict ovarian cancer survival and disease progression. Oncogene 2006; 26:198-214. [PMID: 16832351 DOI: 10.1038/sj.onc.1209773] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [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: 11/09/2022]
Abstract
Epidemiological studies have implicated androgens in the etiology and progression of epithelial ovarian cancer. We previously reported that some androgen responses were dysregulated in malignant ovarian epithelial cells relative to control, non-malignant ovarian surface epithelial (OSE) cells. Moreover, dysregulated androgen responses were observed in OSE cells derived from patients with germline BRCA-1 or -2 mutations (OSEb), which account for the majority of familial ovarian cancer predisposition, and such altered responses may be involved in ovarian carcinogenesis or progression. In the present study, gene expression profiling using cDNA microarrays identified 17 genes differentially expressed in response to continuous androgen exposure in OSEb cells and ovarian cancer cells as compared to OSE cells derived from control patients. A subset of these differentially affected genes was selected and verified by quantitative real-time reverse transcription-polymerase chain reaction. Six of the gene products mapped to the OPHID protein-protein interaction database, and five were networked within two interacting partners. Basic leucine zipper transcription factor 2 (BACH2) and acetylcholinesterase (ACHE), which were upregulated by androgen in OSEb cells relative to OSE cells, were further investigated using an ovarian cancer tissue microarray from a separate set of 149 clinical samples. Both cytoplasmic ACHE and BACH2 immunostaining were significantly increased in ovarian cancer relative to benign cases. High levels of cytoplasmic ACHE staining correlated with decreased survival, whereas nuclear BACH2 staining correlated with decreased time to disease recurrence. The finding that products of genes differentially responsive to androgen in OSEb cells may predict survival and disease progression supports a role for altered androgen effects in ovarian cancer. In addition to BACH2 and ACHE, this study highlights a set of potentially functionally related genes for further investigation in ovarian cancer.
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MESH Headings
- Acetylcholinesterase/genetics
- Acetylcholinesterase/metabolism
- Adult
- Aged
- Aged, 80 and over
- Androgens/pharmacology
- BRCA1 Protein/genetics
- Basic-Leucine Zipper Transcription Factors/genetics
- Basic-Leucine Zipper Transcription Factors/metabolism
- Carcinoma, Endometrioid/genetics
- Carcinoma, Endometrioid/metabolism
- Carcinoma, Papillary/genetics
- Carcinoma, Papillary/metabolism
- Cells, Cultured
- Cystadenocarcinoma, Serous/genetics
- Cystadenocarcinoma, Serous/metabolism
- Disease Progression
- Epithelial Cells/metabolism
- Female
- Flow Cytometry
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Humans
- Immunoenzyme Techniques
- Leucine Zippers
- Middle Aged
- Mutation
- Oligonucleotide Array Sequence Analysis
- Ovarian Neoplasms/genetics
- Ovarian Neoplasms/metabolism
- Ovarian Neoplasms/mortality
- Ovary/metabolism
- Ovary/pathology
- RNA, Messenger/analysis
- RNA, Messenger/genetics
- RNA, Neoplasm/analysis
- Reverse Transcriptase Polymerase Chain Reaction
- Survival Rate
- Tissue Array Analysis
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Affiliation(s)
- A Motamed-Khorasani
- The Samuel Lunenfeld Research Institute, Mt Sinai Hospital, Toronto, Ontario, Canada
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19
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Subramanian PS, Gailloud PH, Heck DV, Tamargo RJ, Murphy KJ, Miller NR. Cook detachable coil embolization of a symptomatic, isolated orbital arteriovenous fistula via a superior ophthalmic vein approach. Neuroradiology 2005; 47:62-5. [PMID: 15633053 DOI: 10.1007/s00234-004-1305-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [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: 09/13/2003] [Accepted: 07/14/2004] [Indexed: 10/26/2022]
Abstract
Isolated arteriovenous fistulas of the posterior orbit occur with exceptional rarity, and their evaluation and management are not well characterized. We describe the clinical presentation and treatment of a spontaneous arteriovenous fistula of the right posterior orbit via a superior ophthalmic vein approach for embolization using platinum detachable coils.
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Affiliation(s)
- P S Subramanian
- Department of Ophthalmology, The Johns Hopkins Hospital, Baltimore, MD 21287, USA
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20
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Gailloud P, Khan HG, Albayram S, Martin JB, Rüfenacht DA, Murphy KJ. Pooling of echographic contrast agents during transcranial Doppler sonography: a sign in favor of slow-flowing giant saccular aneurysms. Neuroradiology 2002; 44:21-4. [PMID: 11942495 DOI: 10.1007/s002340100691] [Citation(s) in RCA: 3] [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: 10/27/2022]
Abstract
Transcranial Doppler (TCD) sonography is a new imaging technique allowing for non-invasive evaluation of the intracranial vascular anatomy and cerebral hemodynamics. The recent introduction of echographic contrast agents has significantly increased the sensitivity of TCD for the diagnosis of intracranial vascular lesions. We report a case of giant AComA aneurysm, undetected by color and power TCD, which became visible after echographic contrast administration as a delayed and persistent area of contrast enhancement. Knowledge of atypical or contrast-specific lesion appearances will become important if contrast-enhanced TCD is to be used routinely in the diagnosis of intracranial aneurysms.
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Affiliation(s)
- P Gailloud
- Division of Diagnostic and Interventional Radiology, Geneva University Hospital, Switzerland.
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21
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Ritvo P, Irvine J, Robinson G, Brown L, Murphy KJ, Matthew A, Rosen B. Psychological adjustment to familial-genetic risk assessment for ovarian cancer: predictors of nonadherence to surveillance recommendations. Gynecol Oncol 2002; 84:72-80. [PMID: 11748980 DOI: 10.1006/gyno.2001.6461] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [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]
Abstract
OBJECTIVE To evaluate whether self-report measures of psychological distress and perceived risk were associated with nonadherence to recommended ovarian cancer surveillance. METHODS Eighty-three patients attending the Familial Ovarian Cancer Clinic (FOCC) at Princess Margaret Hospital were assessed psychosocially prior to and during initial familial-genetic assessment and then monitored for adherence with recommended follow-up surveillance over a period of 12-18 months. The assessment protocol included an investigator-designed clinic questionnaire, the State-Trait Anxiety Inventory (STAI), Center for Epidemiologic Studies Depression Scale (CESD), Life Orientation Test (LOT), Medical Outcomes Study Social Support Survey (MOSSS), Texas Inventory of Grief, and the COPE. Nonadherence was measured in terms of unexplained absences at one or two recommended and scheduled surveillance appointments following the familial-genetic assessment. RESULTS Univariate tests revealed a significant association between higher perception of ovarian cancer risk, as assessed immediately after the familial-genetic risk assessment in the clinic and nonadherence to physician-recommended surveillance (chi2 (2, N = 83) = 9.75, P < 0.008). Empirically based estimates of risk, conveyed by the clinic team to subjects, were not significantly associated with nonadherence (chi2 (2, N = 83) = 0.19, P = 0.91). Logistic regression analysis revealed that subjects who perceived themselves to be at high ovarian cancer risk were five times more likely to be nonadherent than participants who perceived themselves to be at low or medium ovarian cancer risk. CONCLUSIONS These results suggest that higher self-perceived risk may predict adherence difficulties to recommended surveillance in women attending a familial-genetic risk clinic.
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Affiliation(s)
- P Ritvo
- Toronto General Hospital, Ontario Cancer Institute/University Health Network, Toronto, Ontario, M5G 2C4, Canada.
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22
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Matilla A, Gorbea C, Einum DD, Townsend J, Michalik A, van Broeckhoven C, Jensen CC, Murphy KJ, Ptácek LJ, Fu YH. Association of ataxin-7 with the proteasome subunit S4 of the 19S regulatory complex. Hum Mol Genet 2001; 10:2821-31. [PMID: 11734547 DOI: 10.1093/hmg/10.24.2821] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Spinocerebellar ataxia type 7 (SCA7) is a neurodegenerative disorder characterized by ataxia and selective neuronal cell loss caused by the expansion of a translated CAG repeat encoding a polyglutamine tract in ataxin-7, the SCA7 gene product. To gain insight into ataxin-7 function and to decipher the molecular mechanisms of neurodegeneration in SCA7, a two-hybrid assay was performed to identify ataxin-7 interacting proteins. Herein, we show that ataxin-7 interacts with the ATPase subunit S4 of the proteasomal 19S regulatory complex. The ataxin-7/S4 association is modulated by the length of the polyglutamine tract whereby S4 shows a stronger association with the wild-type allele of ataxin-7. We demonstrate that endogenous ataxin-7 localizes to discrete nuclear foci that also contain additional components of the proteasomal complex. Immunohistochemical analyses suggest alterations either of the distribution or the levels of S4 immunoreactivity in neurons that degenerate in SCA7 brains. Immunoblot analyses demonstrate reduced levels of S4 in SCA7 cerebella without evident alterations in the levels of other proteasome subunits. These results suggest a role for S4 and ubiquitin-mediated proteasomal proteolysis in the molecular pathogenesis of SCA7.
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Affiliation(s)
- A Matilla
- Howard Hughes Medical Institute, University of Utah, Salt Lake City, UT 84112-5331, USA
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23
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Gaffney DK, Holden J, Zempolich K, Murphy KJ, Dicker AP, Dodson M. Elevated COX-2 expression in cervical carcinoma: reduced cause-specific survival and pelvic control. Am J Clin Oncol 2001; 24:443-6. [PMID: 11586093 DOI: 10.1097/00000421-200110000-00006] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [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: 12/21/2022]
Abstract
The purpose of this study was to correlate the level of cyclooxygenase-2 (COX-2) expression in carcinoma of the cervix with the clinical endpoints: local control, cause-specific survival, and patterns of failure in patients treated with radiotherapy. Formalin-fixed, paraffin-embedded tumor biopsies were stained for COX-2. Clinical factors such as stage, grade, tumor size, pre- and posttreatment hemoglobin level, and radiotherapy dose were also evaluated. Actuarial local control rates and cause-specific survival were determined according to the Kaplan-Meier method. COX-2 distribution staining was the only prognostic factor that was associated with local control and cause-specific survival. High COX-2 distribution staining was associated with decreased local control and decreased cause-specific survival by log rank comparison of Kaplan-Meier survival curves. The 5-year cause-specific survival rates for tumors with low versus high COX-2 distribution values were 90% and 22%, respectively (p = 0.0003). Actuarial pelvic control at 5 years was superior in patients with low COX-2 distribution staining (92%) compared with high staining (42%, p = 0.005). COX-2 staining intensity was found to correlate positively with tumor size (p = 0.02). These findings indicate that increased expression of COX-2 yields reduced pelvic control and cause-specific survival in patients with invasive carcinoma of the cervix treated with radiotherapy. Previously, inhibition of COX-2 has been demonstrated to sensitize tumors to radiation without effect on normal tissue. Taken together, these data may support a novel therapeutic application of COX-2 inhibitors in the treatment of carcinoma of the cervix.
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Affiliation(s)
- D K Gaffney
- Department of Radiation Oncology, University of Utah, Salt Lake City, 84132, USA
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24
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Gailloud P, Beauchamp NJ, Carpenter JS, Albayram S, Murphy KJ. Vascular compression by a ventricular shunt catheter: clinical value of volume-rendered CT angiography. AJNR Am J Neuroradiol 2001; 22:1570-1. [PMID: 11559508 PMCID: PMC7974557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
One of the strongest advantages of CT angiography (CTA) lies in its unique ability to display simultaneously the anatomy of the vascular system and the topographic relationships existing between the vessels and the neighboring structures. The case we report, a 76-year-old man who underwent an intraventricular shunt placement complicated by a stroke, shows how this topographic assessment also provides important diagnostic information when vascular lesions resulting from an extrinsic compression mechanism are suspected.
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Affiliation(s)
- P Gailloud
- Neuroradiology Division, Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, Maryland 21287, USA
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25
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Murphy KJ, Fox GB, Foley AG, Gallagher HC, O'Connell A, Griffin AM, Nau H, Regan CM. Pentyl-4-yn-valproic acid enhances both spatial and avoidance learning, and attenuates age-related NCAM-mediated neuroplastic decline within the rat medial temporal lobe. J Neurochem 2001; 78:704-14. [PMID: 11520891 DOI: 10.1046/j.1471-4159.2001.00411.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
2-N-Pentyl-4-pentynoic acid [pentyl-4-yn-valproic acid (VPA)] is an analogue of valproic acid that induces neuritogenesis and increases neural cell adhesion molecule (NCAM) prevalence in cultured neural cells. As memory consolidation involves synapse growth, aided by cell adhesion molecule function, we determined whether or not pentyl-4-yn-VPA had cognition-enhancing properties. Pentyl-4-yn-VPA (16-85 mg/kg) significantly improved water maze learning and task retention when given prior to each training session. Acute administration of pentyl-4-yn-VPA also influenced memory consolidation processes as, when given at 3 h post-passive avoidance training, the amnesia induced by scopolamine given 6 h post-training was prevented in a dose-dependent manner. Chronic administration of pentyl-4-yn-VPA (16.8 or 50.4 mg/kg) also significantly reduced escape latencies in the water maze task, 24 h following the last drug administration. This improved spatial learning was accompanied by enhanced neuroplasticity as the expression of NCAM polysialylated neurons in the infragranular zone of the dentate gyrus and in layer II of the perirhinal and piriform cortex was increased significantly following chronic drug treatment. The cognition-enhancing qualities of pentyl-4-yn-VPA, combined with its ability to attenuate the age-related loss of the NCAM polysialylation state, suggest that it may effectively slow the onset of cognitive decline.
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Affiliation(s)
- K J Murphy
- Department of Pharmacology, The Conway Institute, University College Dublin, Dublin, Ireland
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Vasconcelos C, Gailloud P, Martin JB, Murphy KJ. Transient arterial hypotension induced by polymethylmethacrylate injection during percutaneous vertebroplasty. J Vasc Interv Radiol 2001; 12:1001-2. [PMID: 11487684 DOI: 10.1016/s1051-0443(07)61584-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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O'Connell AW, Fox GB, Kjøller C, Gallagher HC, Murphy KJ, Kelly J, Regan CM. Anti-ischemic and cognition-enhancing properties of NNC-711, a gamma-aminobutyric acid reuptake inhibitor. Eur J Pharmacol 2001; 424:37-44. [PMID: 11470258 DOI: 10.1016/s0014-2999(01)01116-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [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: 11/27/2022]
Abstract
NNC-711 [1-(2-((diphenylmethylene)amino)oxy)ethyl)-1,2,4,6-tetrahydro-3-pyridinecarboxylic acid hydrochloride], a gamma-aminobutyric acid (GABA) reuptake inhibitor with anticonvulsant activity, was investigated with respect to its cognition-enhancing and neuroprotective potency. In the rat, administration of NNC-711 immediately prior to training prevented amnesia for a passive avoidance task induced by the acetylcholine receptor antagonist scopolamine. NNC-711 was also effective in protecting against ischemia-induced death of CA1 pyramidal neurons in a model of bilateral common carotid artery occlusion in the gerbil. In addition to a neuroprotective activity, NNC-711 exhibited significant cognition-enhancing actions. Daily administration of NNC-711, immediately prior to a spatial learning task, significantly reduced escape latencies in the water maze paradigm in both mature (postnatal day 80) and aged (28 months) rats. All of the above actions exhibited a bell-shaped response with an optimal dose of 0.5-1.0 mg/kg. These investigations with NNC-711 and previous clinical observations on the structurally related anticonvulsant tiagabine confirm the potential of GABA reuptake inhibitors as anti-amnesia and cognition-enhancing agents.
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Affiliation(s)
- A W O'Connell
- Department of Pharmacology, Conway Institute, University College Dublin, Belfield, 4, Dublin, Ireland
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Martin JB, Murphy KJ, Gailloud P, Sugiu K, Treggiari MM, Muster M, Guimaraens L, Théron JG, Rüfenacht DA. In vitro evaluation of the effectiveness of distal protection in the prevention of cerebral thromboembolism during carotid stent placement. Acad Radiol 2001; 8:623-8. [PMID: 11450963 DOI: 10.1016/s1076-6332(03)80687-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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: 11/24/2022]
Abstract
RATIONALE AND OBJECTIVES The purpose of this in vitro study was to evaluate and quantify the benefit of the balloon protection device, to identify the most effective sequence of irrigation or flushing, and to determine the most effective catheter position to remove the maximum number of emboli or debris beneath the flow-arrest balloon. MATERIALS AND METHODS Silicone models of the neurovasculature were attached to a systodiastolic pump. Stents were placed in carotid stenoses by using the distal flow protection technique. Embolic material was released within the stent. The effectiveness of different irrigation techniques was evaluated. RESULTS Aspiration under the balloon through the guiding catheter with a 60-mL syringe followed by one power injection at 40 mL injected at 2 mL/sec will result in removal of about 98% of potential emboli from the internal carotid artery [corrected]. CONCLUSION In vitro evaluation of the distal flow protection technique indicates that it should reduce stroke risk during carotid stent placement.
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Affiliation(s)
- J B Martin
- Department of Radiology, University Hospital of Geneva, Switzerland
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Albayram S, Gailloud P, Tatli S, Venbrux A, Murphy KJ. Common bronchial artery trunk originating from the left subclavian artery. J Vasc Interv Radiol 2001; 12:774-5. [PMID: 11389235 DOI: 10.1016/s1051-0443(07)61456-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Abstract
As techniques evolve that allow molecular characterization of disease processes such as cancer, definition of "normal" at a molecular level becomes increasingly important. Increasingly large numbers of mutations are found at the genomic level, but whether all of those mutations contribute to the malignant state of a carcinoma cell is not clear. Without knowledge of what constitutes normality on the proteomic level in an organ or cell, we cannot determine what genomic changes are physiologically important. Traditionally, colon cancer is identified and classified by histological criteria. Margins of the colon are defined as "grossly uninvolved" when the histology is indistinguishable from that of normal (free from disease) colon. By using molecular pathology techniques and working backward from colon adenocarcinoma to hypoplastic polyps to presumably normal mucosa, we defined some of those protein differences. Our results may provide a molecular basis for identifying tumor formation and progression in situ.(J Histochem Cytochem 49:667-668, 2001)
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Affiliation(s)
- K J Murphy
- Huntsman Cancer Institute, University of Utah, 2000 Circle of Hope, Salt Lake City, UT 84112-5550, USA.
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Murphy KJ, Houdart E, Szopinski KT, Levrier O, Guimaraens L, Kühne D, Solymosi L, Bartholdy NJ, Rüfenacht DA. Mechanical detachable platinum coil: report of the European phase II clinical trial in 60 patients. Radiology 2001; 219:541-4. [PMID: 11323485 DOI: 10.1148/radiology.219.2.r01ma38541] [Citation(s) in RCA: 2] [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: 11/11/2022]
Abstract
PURPOSE To determine the safety and reliability of the mechanical detachment system of a platinum coil (Detach-18) when used for neurovascular embolization. MATERIALS AND METHODS Sixty patients (21 men, 39 women; age range, 26-75 years; mean age, 56.2 years) were treated in seven centers. Ease of introduction of the coil to the microcatheter, effect of coil passage on the microcatheter shape and stability during its delivery, retrievability of the coil before and after the transition zone passed beyond the microcatheter, detachment of the coil, and effect of coil rotation on the microcatheter stability were evaluated. The detachment system itself was evaluated for premature detachment, failure of the coil to detach, detachment time, number of turns, visibility of radiopaque markers, number of coils deployed per patient, and percentage of vessel occlusion obtained. A 0.015-inch-diameter regular coil and a 0.014-inch-diameter soft coil were used. RESULTS A total of 1,061 coils were used; 1,009 were detached. The number of coils deployed ranged from four to 104 (mean, 17 coils). The coils passed easily through the microcatheter. The detachment maneuver occurred within 5-25 seconds, with five to 60 turns of the introducing wire. One premature coil detachment occurred without clinical sequela; 100% occlusion of the vessel lumen was achieved in 53 patients; 80%-90%, in four; and 70%-80%, in two. There were no device-related complications. CONCLUSION The detachment system was safe and reliable. This is a useful system for coil embolization in neurovascular diseases.
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Affiliation(s)
- K J Murphy
- Div of Diagnostic and Interventional Radiology, Geneva Univ Hospital, Switzerland.
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32
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Abstract
Polysialylation of neural cell adhesion molecule (NCAM PSA) modulates cell-cell homophilic binding and signalling during brain development and the remodelling of discrete brain regions in the adult. Following learning, a transient increase in the frequency of polysialylated neurones occurs in the dentate gyrus of the hippocampal formation, and this has been correlated with the selective retention and/or elimination of synapses that are transiently overproduced during memory consolidation. We now demonstrate that protein kinase C delta (PKCdelta) negatively regulates polysialyltransferase activity in the rat brain during development and also in the hippocampus during memory consolidation, where its down-regulation in the Golgi membrane fraction coincides with the transient increase in NCAM PSA expression. Decreased expression of PKCdelta was also observed in the hippocampus of rats reared in a complex environment and this directly contrasted the significant increase in frequency of hippocampal polysialylated neurones observed in these animals. These effects were isoform-specific as no change in total PKC enzyme activity was detected during memory consolidation and complex environment rearing had no effect on the hippocampal expression of PKCalpha, beta, gamma or epsilon. By sequential immunoprecipitation and immunoblot analysis, phosphorylation of polysialyltransferase protein(s) was (were) demonstrated to occur on both serine and tyrosine residues and this was associated with decreased enzyme activity. Moreover, a similar experimental approach revealed the degree of PKCdelta co-precipitation with polysialyltransferase protein(s) to be inversely correlated with polysialyltransferase activity. These findings support in vitro evidence indicating PKCdelta to regulate polysialyltransferase activity and NCAM polysialylation state.
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Affiliation(s)
- H C Gallagher
- Department of Pharmacology, The Conway Institute, University College, Dublin, Ireland
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Gaffney DK, Holden J, Davis M, Zempolich K, Murphy KJ, Dodson M. Elevated cyclooxygenase-2 expression correlates with diminished survival in carcinoma of the cervix treated with radiotherapy. Int J Radiat Oncol Biol Phys 2001; 49:1213-7. [PMID: 11286825 DOI: 10.1016/s0360-3016(00)01583-2] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.2] [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: 10/18/2022]
Abstract
PURPOSE The purpose of this study was to examine the relationship between overall survival and prognostic factors in carcinoma of the cervix treated with radiation therapy. A clinicopathologic study was performed on 24 patients. METHODS AND MATERIALS Formalin-fixed, paraffin-embedded tumor biopsies were stained for Cyclooxygenase-2 (COX-2), Topoisomerase I, Topoisomerase II, and p53. Clinical factors such as stage, grade, tumor size, pre- and post-treatment hemoglobin level, and radiotherapy dose were also evaluated. RESULTS Median follow-up was 75 months for living patients. The only immunohistochemical or clinical factor that was associated with improved survival was decreased COX-2 distribution staining. High COX-2 distribution staining was associated with decreased overall survival (p = 0.021) and decreased disease-free survival (p = 0.015) by log-rank comparison of Kaplan-Meier survival curves. The 5-year overall survival rates for tumors with low vs. high COX-2 distribution values were 75% and 35%, respectively. COX-2 staining intensity was found to correlate positively with tumor size (p = 0.022). CONCLUSION These findings indicate that increased expression of COX-2 portends a diminished survival in patients with invasive carcinoma of the cervix treated with radiotherapy. Because COX-2 is an early-response gene involved in angiogenesis and inducible by different stimuli, these data may indicate opportunity to intervene with specific inhibitors of COX-2 in carcinoma of the cervix.
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Affiliation(s)
- D K Gaffney
- Department of Radiation Oncology, University of Utah, Salt Lake City, UT 84132, USA.
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Fox GB, Kjøller C, Murphy KJ, Regan CM. The modulations of NCAM polysialylation state that follow transient global ischemia are brief on neurons but enduring on glia. J Neuropathol Exp Neurol 2001; 60:132-40. [PMID: 11273001 DOI: 10.1093/jnen/60.2.132] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [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: 11/12/2022] Open
Abstract
To investigate the role of polysialylated neural cell adhesion molecule (NCAM PSA)-mediated plasticity after injury, we examined the temporal and spatial expression of NCAM PSA immunoreactivity in the medial temporal lobe following global ischemia. Male Mongolian gerbils were subjected to bilateral common carotid artery occlusion for 5 min and killed at increasing times post-occlusion. The well-characterized delayed CAl pyramidal cell death was observed 5-7 days post-occlusion. At post-occlusion days 1-2 there was a small but significant increase of NCAM PSA-positive hippocampal granule cells followed by an equally significant decrease at post-occlusion day 5. In contrast, a substantial increase in glial PSA expression was observed in all hippocampal regions at 1-7 days post-occlusion that was associated generally with stellate astroglia and specifically with the radial processes of glia traversing the granule cell layer of the dentate gyrus. Administration of the glutamate antagonist 2,3-dihydroxy-6-nitro-7-sulfamoyl-ben-zo(F)quinoxaline significantly blocked the ischemia-induced modulation of neuronal and glial NCAM PSA expression. Astroglial NCAM polysialylation became attenuated by 35 days post-occlusion except in the CAI area of cell death. The temporal and regional pattern of polysialylated NCAM expression in the ischemic gerbil hippocampus implicates this neuroplastic marker in mechanisms of neurotrophic-dependent repair/remodeling that ensue following transient interruption of blood flow.
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Affiliation(s)
- G B Fox
- Department of Pharmacology, Conway Institute, National University of Ireland, Dublin
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Martin JB, Pache JC, Treggiari-Venzi M, Murphy KJ, Gailloud P, Puget E, Pizzolato G, Sugiu K, Guimaraens L, Théron J, Rüfenacht DA. Role of the distal balloon protection technique in the prevention of cerebral embolic events during carotid stent placement. Stroke 2001; 32:479-84. [PMID: 11157186 DOI: 10.1161/01.str.32.2.479] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.4] [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]
Abstract
BACKGROUND AND PURPOSE We sought to quantitatively and qualitatively evaluate the release of atheromatous plaque debris induced by carotid stenting procedures. METHODS Eight patients with severe carotid atheromatous stenoses were treated by stent implantation under distal balloon protection. Blood samplings were obtained after stent deployment in the blood pooled below the inflated protection balloon. The samples were centrifuged and evaluated for plaque debris with the use of light microscopy. The debris release was quantitatively estimated by dividing the total volume of debris obtained by the mean debris size. Five patients without endovascular procedure were used as a control group. RESULTS The 2 main debris types found were nonrefringent cholesterol crystals (4 to 389 microm; 115 to 8697 in number) and lipoid masses (7 to 600 microm; 341 to 34 000 in number). There was a statistically significant difference compared with the samples obtained in the control group (P:=0.017). CONCLUSIONS Blood samples collected during stent implantation procedures contain a large quantity of atheromatous plaque debris. This emphasizes the role of distal protection techniques in avoiding migration of this plaque material into the cerebral circulation.
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Affiliation(s)
- J B Martin
- Department of Radiology, Geneva University Hospital, Geneva, Switzerland.
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Gailloud P, Muster M, Khaw N, Martin JB, Murphy KJ, Fasel JH, Rüfenacht DA. Anatomic relationship between arachnoid granulations in the transverse sinus and the termination of the vein of Labbé: an angiographic study. Neuroradiology 2001; 43:139-43. [PMID: 11326559 DOI: 10.1007/s002340000468] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [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: 11/29/2022]
Abstract
We studied the anatomic relationship between arachnoid granulations in the transverse sinus and the termination of the vein of Labbé in 57 consecutive angiograms. Patients with pathology in intracranial venous structures or with inadequate image quality of the venous system were excluded. Arachnoid granulations were found in 12 of the 57 patients (21.1%), always at the junction of the vein of Labbé and the transverse sinus; the vein of Labbé was present in 55 patients (96.5%), most often without associated arachnoid granulations; the latter, however, were not observed in the absence of a vein of Labbé. This study confirms the close, constant anatomic relationship between arachnoid granulations in the transverse sinus and the termination of the vein of Labbé. This observation may help to differentiate arachnoid granulations from pathologic conditions involving the transverse sinus such as dural sinus thrombosis. The constant character of this relationship suggests a developmental role of afferent veins in the formation of arachnoid granulations.
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Affiliation(s)
- P Gailloud
- Department of Radiology and Radiological Sciences, Johns Hopkins Hospital, 600 North Wolfe Street Baltimore, MD 21287, USA.
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Abstract
Vertebroplasty is the percutaneous injection of bone cement into a symptomatic fractured vertebral body under fluoroscopic guidance. It is a safe and simple outpatient procedure. We discuss patient selection, the techniques, and the results based on our experience and that of our radiology colleagues.
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Affiliation(s)
- K J Murphy
- Intervention Neuroradiology, Department of Radiology and Radiologic Science, Johns Hopkins Medical Institution, 600 North Wolfe Street, Baltimore, MD 21287, USA.
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Murphy KJ, Mandai S, Gailloud P, Clint H, Szopinski K, Quie H, Martin JB, Rüfenacht DA. Neurovascular embolization: in vitro evaluation of a mechanical detachable platinum coil system. Radiology 2000; 217:904-6. [PMID: 11110961 DOI: 10.1148/radiology.217.3.r00nv11904] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 11/11/2022]
Abstract
The authors evaluated a mechanically detachable platinum coil system intended for neurovascular use. The introduction characteristics, ease of delivery, ease of retrieval, and detachability were studied with fluoroscopic guidance with in vitro silicone models. All the coils passed easily through the microcatheter. The detachment maneuver occurred within 20 seconds with 20 or fewer rotations of the pusher wire. One of 229 coils detached prematurely but only after deliberate and extreme manipulation. The detachment system is safe, reliable, and consistent and will be useful for interventional neuroradiologists.
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Affiliation(s)
- K J Murphy
- Department of Radiology, Hospital Cantonal De Geneve, University of Geneva, Switzerland
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Fox GB, Fichera G, Barry T, O'Connell AW, Gallagher HC, Murphy KJ, Regan CM. Consolidation of passive avoidance learning is associated with transient increases of polysialylated neurons in layer II of the rat medial temporal cortex. J Neurobiol 2000; 45:135-41. [PMID: 11074459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
Within the rat medial temporal lobe, transient modulations of neural cell adhesion molecule (NCAM) polysialylation have been observed to follow spatial learning. These have been attributed to neuroplastic events associated with the processing of information destined for long term memory consolidation. To determine if similar events are associated with avoidance learning, we investigated change in polysialylated cell number in the entorhinal, perirhinal, and piriform cortex, following acquisition of a passive avoidance task in the rat. Direct quantification of polysialylated neurons in layer II of these cortical regions revealed a significant increase in polysialylated cell frequency at 12 h following passive avoidance training. Unlike spatial learning, the increased expression of polysialylated neurons persisted for up to 24-48 h following training. In the more dorsal aspect of the perirhinal/entorhinal cortex, this increase was found to be specific to learning, as it was not observed in animals rendered amnesic with scopolamine. By contrast, change in polysialylated cell frequency in the ventral aspect of the medial temporal lobe was only partially reduced by amnesic doses of scopolamine. The persisting activation of NCAM polysialylation in the more dorsal aspects of the perirhinal and entorhinal cortex is suggested to reflect the need for more extensive synaptic alterations, as compared to those required for the consolidation of spatial learning. Moreover, the neuroplastic modulations observed in the more ventral regions of the entorhinal and perirhinal cortex appear to be a unique aspect of avoidance conditioning that reflects the activation of alternative learning strategies associated with motivational and/or contextual parameters of the task.
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Affiliation(s)
- G B Fox
- Department of Pharmacology, The Conway Institute, National University of Ireland Dublin, Belfield, Dublin 4, Ireland
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Gailloud P, San Millán Ruíz D, Muster M, Murphy KJ, Fasel JH, Rüfenacht DA. Angiographic anatomy of the laterocavernous sinus. AJNR Am J Neuroradiol 2000; 21:1923-9. [PMID: 11110548 PMCID: PMC7974304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2000] [Indexed: 02/18/2023]
Abstract
BACKGROUND AND PURPOSE The laterocavernous sinus (LCS) has recently been recognized as one of the major drainage pathways of the superficial middle cerebral vein (SMCV). Our purpose was to investigate the drainage pattern of the SMCV, with special emphasis on the angiographic anatomy of the LCS. METHODS The drainage pathways of the SMCV were evaluated prospectively on 100 selective carotid angiograms obtained in 65 consecutive patients. RESULTS The SMCV was absent in 19% of cases. A classic termination into the cavernous sinus (CS) was found in 20%, a paracavernous sinus in 39%, and an LCS in 22%. The LCS drained toward the pterygoid plexus (27%), the superior petrosal sinus (18%), the posterior aspect of the CS (32%), or a combination of these pathways (23%). A complete absence of connection between the LCS and CS was observed in 63.5% of the patients. CONCLUSION The LCS is a laterosellar venous space that is anatomically and angiographically distinct from the CS. Secondary small anastomoses between the LCS and CS may make it difficult to differentiate the two structures. Appreciation of the course and connection pattern of the LCS is important, particularly when planning an endovascular approach to treatment of lesions in the region of the CS.
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Affiliation(s)
- P Gailloud
- Division of Diagnostic and Interventional Radiology, University of Geneva, Switzerland
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Sinclair SJ, Murphy KJ, Birch CD, Hamill JD. Molecular characterization of quinolinate phosphoribosyltransferase (QPRtase) in Nicotiana. Plant Mol Biol 2000; 44:603-17. [PMID: 11198422 DOI: 10.1023/a:1026590521318] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Quinolate acid phosphoribosyltransferase (QPRTase), a key enzyme in nicotinamide adenine dinucleotide (NAD) biosynthesis, also plays an important role in ensuring nicotinic acid is available for the synthesis of defensive pyridine alkaloids in Nicotiana species. In this study, cDNAs for QPRTase were characterized from N. rustica and N. tabacum. Deduced proteins from both cDNAs are almost identical and contain a 24 amino acid N-terminal extension, not reported in other QPRTases, that has characteristics of a mitochondrial targeting sequence. In N. tabacum and N. sylvestris, both of which contain nicotine as the major pyridine alkaloid, QPRTase transcript was detected in roots, the site of nicotine synthesis, but not in leaves. QPRTase transcript levels increased markedly in roots of both species 12-24 h after damage to aerial tissues, with a concomitant rise in transcript levels of putrescine N-methyltransferase (PMT), another key enzyme in nicotine biosynthesis. In N. glauca, however, in which anabasine represents the major pyridine alkaloid, QPRTase transcript was detected in both leaf and root tissues. Moreover, wound induction of QPRTase but not PMT was observed in leaf tissues, and not in roots, 12-24 h after wounding. Southern analysis of genomic DNA from the Nicotiana species noted above, and also several others from within the genus, suggested that QPRTase is encoded by a small gene family in all the species investigated.
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MESH Headings
- Amino Acid Sequence
- Blotting, Northern
- Blotting, Southern
- Cloning, Molecular
- DNA, Complementary/chemistry
- DNA, Complementary/genetics
- DNA, Plant/genetics
- Escherichia coli/enzymology
- Escherichia coli/genetics
- Gene Expression Regulation, Enzymologic
- Gene Expression Regulation, Plant
- Genetic Complementation Test
- Molecular Sequence Data
- Pentosyltransferases/genetics
- Pentosyltransferases/metabolism
- Plant Roots/enzymology
- Plant Roots/genetics
- Plants, Toxic
- RNA, Plant/genetics
- RNA, Plant/metabolism
- Sequence Alignment
- Sequence Analysis, DNA
- Sequence Homology, Amino Acid
- Species Specificity
- Stress, Mechanical
- Nicotiana/enzymology
- Nicotiana/genetics
- Up-Regulation
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Affiliation(s)
- S J Sinclair
- Department of Biological Sciences, Monash University, Melbourne, Victoria, Australia
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O'Malley A, O'Connell C, Murphy KJ, Regan CM. Transient spine density increases in the mid-molecular layer of hippocampal dentate gyrus accompany consolidation of a spatial learning task in the rodent. Neuroscience 2000; 99:229-32. [PMID: 10938428 DOI: 10.1016/s0306-4522(00)00182-2] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In previous studies, we observed a transient increase in dendritic spine frequency in the molecular layer of the dentate gyrus at 6h following passive avoidance training [O'Malley A., O'Connell C. and Regan C. M. (1998) Neuroscience 87, 607-613]. To determine if a similar change is associated with spatial forms of learning, we have estimated time-dependent modulations of spine number in the dentate gyrus of the adult rat following water maze training. All animals exhibited significant reductions in the latency to locate the platform over the five training sessions of the single trial (median and interquartile ranges of 60, 8 versus 8, 3 s for trials 1 and 5, respectively) and this improved performance was retained just prior to killing at the 6h post-training time. The unbiased dissector stereological procedure was used to estimate spine number in serial pairs of ultrathin coronal sections obtained at a point 3.3 mm caudal of Bregma. This analysis revealed a significant learning-associated increase in spine number at the 6h post-training time (1.32+/-0.18 spines/microm(3)) as it was not observed in paired controls exposed to the water maze for a similar swim-time (0.66+/-0.11 spines/microm(3)). The increase was transient as spine number returned to control levels at the 72 h post-training time. These spine frequency changes are proposed to reflect increased synapse turnover rate and concomitant change in connectivity pattern in the processing of information for long-term storage.
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Affiliation(s)
- A O'Malley
- Department of Pharmacology, The Conway Institute, University College Dublin, Belfield, 4, Dublin, Ireland
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Sinclair AJ, Murphy KJ, Li D. Marine lipids: overview "news insights and lipid composition of Lyprinol". Allerg Immunol (Paris) 2000; 32:261-71. [PMID: 11094639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
The omega 3 polyunsaturated fatty acids have had a major impact on thinking in medicine in the last twenty years. The parent fatty acid in the omega 3 fatty acid family is alpha-linolenic acid (ALA) which is an essential fatty acid found in high concentrations in certain plant oils, such as flaxseed oil, walnut oil and canola oil. Several longer chain or derived omega 3 fatty acids are formed from alpha-linolenic acid and these are mainly found in fish, fish oils and from other marine organisms. The main marine omega 3 fatty acids are eicosapentaenoic acid (EPA), docosapentaenoic acid and docosahexaenoic acid (DHA). It is of interest that DHA is specifically localised in the retina and the brain in humans and other mammals. The longer chain omega 3 fatty acids are rapidly incorporated into cell membrane phospholipids where it is regarded they influence the metabolism/metabolic events within the cells. The mechanisms by which these changes occur include alteration in the fluidity of membranes such that there are subtle changes in receptor function, alteration in cell signalling mechanisms, membrane-bound enzymes, regulation of the synthesis of eicosanoids, and regulation of gene expression. In this chapter, we report a comparison between the composition of the oil derived from the New Zealand Green Lipped Mussel (Lyprinol') and two other oils rich in omega 3 fatty acids, namely flaxseed oil and tuna oil. The main lipid classes in Lyprinol' were sterol esters, triglycerides, free fatty acids, sterols and phospholipids while triglycerides were the main lipids in the other two oils. The main omega 3 fatty acids in Lyprinol' were EPA and DHA, while in flaxseed oil and tuna oil the main omega 3 fatty acids were ALA and DHA, respectively. The main sterols in Lyprinol' were cholesterol and desmosterol/brassicasterol, while in flaxseed oil and tuna oil the main sterols were beta-sitosterol and cholesterol, respectively. Epidemiological observations, populations' studies and basic research indicate the possibility of influencing the outcome of cardiovascular disease, inflammatory disorders and neural function by ingestion of the omega 3 polyunsaturated fatty acids.
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Affiliation(s)
- A J Sinclair
- Department of Food Science, RMIT University, Melbourne, Victoria, Australia
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Murphy KJ, Deramond H. Percutaneous vertebroplasty in benign and malignant disease. Neuroimaging Clin N Am 2000; 10:535-45. [PMID: 11083017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Based on experience, published data, and published series, the authors recommend the use of vertebroplasty for painful destructive vertebral lesions. In the authors' opinion, the greatest difficulty lies in denying the treatment to patients with advanced metastatic disease, where other surgical or medical treatments may have greater morbidity and mortality. The few complications reported have been related to excessive PMMA injection, underlining the need for excellent imaging conditions to control the cement injection.
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Affiliation(s)
- K J Murphy
- Department of Radiology and Radiological Sciences, The John Hopkins University School of Medicine, Baltimore, Maryland 21287, USA.
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Ritvo P, Robinson G, Irvine J, Brown L, Matthew A, Murphy KJ, Stewart DS, Styra R, Wang C, Mullen M, Cole D, Rosen B. Psychological adjustment to familial genetic risk assessment: differences in two longitudinal samples. Patient Educ Couns 2000; 40:163-172. [PMID: 10771370 DOI: 10.1016/s0738-3991(99)00082-8] [Citation(s) in RCA: 13] [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: 05/23/2023]
Abstract
Heritable cancer risk assessment is an increasingly common method of deriving valuable information relevant to deciding on appropriate screening regimens and preventive treatments. Assessments of heritable risk typically include familial-genetic evaluation, where analyses relate family pedigree to cancer risk, and DNA testing, where analyses indicate genetic mutations associated with cancer risk (e.g., BRCA1/BRCA2 mutations) or their absence. In this paper we report on the psychological responses of women given familial-genetic evaluations for ovarian cancer risk. The baseline and 6 to 12 follow-up assessments of an initial clinic-attending cohort of 65 women are compared with the baseline and 9 to 12 follow-up assessments of a second clinic-attending cohort of 60 women. Sizeable differences were found in the prevalence of clinically significant depression in these two physician or self-referred populations, as assessed by the Center for Epidemiological Studies Depression scale and in the mean scores. Hypotheses accounting for these differences are discussed.
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Affiliation(s)
- P Ritvo
- Research Unit, Division of Preventive Oncology, Cancer Care Ontario, Toronto, Canada
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Gailloud P, Murphy KJ, Rigamonti D. Bilateral thoracic bifurcation of the common carotid artery associated with Klippel-Feil anomaly. AJNR Am J Neuroradiol 2000; 21:941-4. [PMID: 10815673 PMCID: PMC7976759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
We report the case of a 72-year-old man with bilateral intrathoracic carotid bifurcations associated with a Klippel-Feil anomaly. The left and right carotid bifurcations were located at levels corresponding to the second and fourth thoracic vertebrae, respectively. A possible association between low carotid bifurcation and the Klippel-Feil anomaly is suggested.
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Affiliation(s)
- P Gailloud
- Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, Maryland 21287, USA
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Stuss DT, Levine B, Alexander MP, Hong J, Palumbo C, Hamer L, Murphy KJ, Izukawa D. Wisconsin Card Sorting Test performance in patients with focal frontal and posterior brain damage: effects of lesion location and test structure on separable cognitive processes. Neuropsychologia 2000; 38:388-402. [PMID: 10683390 DOI: 10.1016/s0028-3932(99)00093-7] [Citation(s) in RCA: 364] [Impact Index Per Article: 15.2] [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: 10/18/2022]
Abstract
Forty-six patients with single focal lesions (35 frontal, 11 nonfrontal) were administered the Wisconsin Card Sorting Test (WCST) under three conditions of test administration. The three conditions varied in the amount of external support provided via specificity of instructions. The WCST, while a multifactorial test, is specifically sensitive to the effects of frontal lobe damage if deficits in language comprehension and visual-spatial search are controlled. There is also specificity of functioning within the frontal lobes: patients with inferior medial frontal lesions, unilateral or bilateral, were not impaired on the standard measures although they had increased loss of set when informed of the sorting categories. Verbal instructions may provide a probe to improve diagnosis and prognosis, assessment of the potential efficacy of treatment, and the time frame of plasticity of specific cognitive operations.
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Affiliation(s)
- D T Stuss
- Rotman Research Institute, Baycrest Centre for Geriatric Care, University of Toronto 3560 Bathurst Street, Toronto, Canada.
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Piotin M, Mandai S, Murphy KJ, Sugiu K, Gailloud P, Martin JB, Rüfenacht DA. Dense packing of cerebral aneurysms: an in vitro study with detachable platinum coils. AJNR Am J Neuroradiol 2000; 21:757-60. [PMID: 10782791 PMCID: PMC7976641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Aneurysm models were used to study the density of packing after coil embolization. Platinum coils were introduced until the point of minimally dense packing, indicated by aneurysmal circulatory exclusion. Packing was continued up to the point of maximal density, indicated by protrusion into the parent artery. Volumetric ratios (coil volume/aneurysmal volume) were calculated for minimally and maximally dense packing. Maximally dense packing ratios were a little higher than the minimally dense ratios, but less than 37%.
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Affiliation(s)
- M Piotin
- Department of Radiology, Geneva University Hospital, Switzerland
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Abstract
Fatty acid utilization is initiated by fatty acid-CoA ligase, which converts free fatty acids into fatty acyl-CoA esters. We have cloned previously the human long-chain fatty acid-CoA ligase 4 (FACL4), which is a central enzyme in controlling the free arachidonic acid level in cells and thereby regulating eicosanoid production. We report here the expression of this gene in tissues, particularly in different parts of the brain. We found that FACL4 encoded a 75 kDa enzyme and that there was a modified translation product expressed in the brain. FACL4 was expressed in early stages of development with a significant amount of FACL4 mRNA detected in an E7 mouse embryo. In addition, FACL4 was highly expressed in both adult and newborn mouse brain especially in the granule cells of the dentate gyrus and the pyramidal cell layer of CA1 in hippocampus, and the granular cell layer and Purkinje cells of the cerebellum.
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Affiliation(s)
- Y Cao
- Huntsman Cancer Institute, 2000 Circle of Hope, Suite 5360, University of Utah, Salt Lake City, UT, USA
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Murphy KJ, Gailloud P, Venbrux A, Deramond H, Hanley D, Rigamonti D. Endovascular treatment of a grade IV transverse sinus dural arteriovenous fistula by sinus recanalization, angioplasty, and stent placement: technical case report. Neurosurgery 2000; 46:497-500; discussion 500-1. [PMID: 10690742 DOI: 10.1097/00006123-200002000-00048] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.3] [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: 11/27/2022] Open
Abstract
OBJECTIVE AND IMPORTANCE The frequent association of dural arteriovenous fistulae (DAVFs) and dural sinus thrombosis may render the treatment of these complex lesions difficult. We report a case of DAVF eradicated by recanalization of the chronically thrombosed transverse sinus (TS) and sigmoid sinus followed by balloon angioplasty and stent deployment at the site of the fistula. CLINICAL PRESENTATION A 52-year-old man presented with a Type IV DAVF of the left TS with widespread white matter changes secondary to venous hypertension. Arterial feeders arose from the left internal carotid, external carotid, and vertebral arteries. The distal segment of the left TS, the left sigmoid sinus, and the proximal segment of the right TS were occluded. Reverse flow was observed in the deep venous system and in the superior sagittal sinus. INTERVENTION Endovascular access was gained through the left internal jugular vein. Mechanical recanalization of the thrombosed left TS and sigmoid sinus was followed by balloon angioplasty and placement of six overlapping stents extending from the TS to the proximal internal jugular vein. Angiograms performed after surgery showed resaturation of antegrade venous drainage as well as complete eradication of the fistulous connections. The patient was discharged with an improving clinical CONCLUSION Recanalization of a chronically occluded dural venous sinus through a jugular approach is feasible. In addition to eradicating cerebral venous hypertension by reestablishing antegrade venous drainage, balloon angioplasty and stent deployment at the DAVF site produced complete closure of the fistula. This may prove to be a new therapeutic strategy for management of DAVF.
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Affiliation(s)
- K J Murphy
- Interventional Neuroradiology, Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, Baltimore, Maryland 21287, USA
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