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Mann B, Zhang X, Bell N, Adefolaju A, Thang M, Dasari R, Kanchi K, Valdivia A, Yang Y, Buckley A, Lettry V, Quinsey C, Rauf Y, Kram D, Cassidy N, Vaziri C, Corcoran DL, Rego S, Jiang Y, Graves LM, Dunn D, Floyd S, Baldwin A, Hingtgen S, Satterlee AB. A living ex vivo platform for functional, personalized brain cancer diagnosis. Cell Rep Med 2023; 4:101042. [PMID: 37192626 PMCID: PMC10313921 DOI: 10.1016/j.xcrm.2023.101042] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/08/2023] [Accepted: 04/19/2023] [Indexed: 05/18/2023]
Abstract
Functional precision medicine platforms are emerging as promising strategies to improve pre-clinical drug testing and guide clinical decisions. We have developed an organotypic brain slice culture (OBSC)-based platform and multi-parametric algorithm that enable rapid engraftment, treatment, and analysis of uncultured patient brain tumor tissue and patient-derived cell lines. The platform has supported engraftment of every patient tumor tested to this point: high- and low-grade adult and pediatric tumor tissue rapidly establishes on OBSCs among endogenous astrocytes and microglia while maintaining the tumor's original DNA profile. Our algorithm calculates dose-response relationships of both tumor kill and OBSC toxicity, generating summarized drug sensitivity scores on the basis of therapeutic window and allowing us to normalize response profiles across a panel of U.S. Food and Drug Administration (FDA)-approved and exploratory agents. Summarized patient tumor scores after OBSC treatment show positive associations to clinical outcomes, suggesting that the OBSC platform can provide rapid, accurate, functional testing to ultimately guide patient care.
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Affiliation(s)
- Breanna Mann
- Eshelman School of Pharmacy, Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Xiaopei Zhang
- Eshelman School of Pharmacy, Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Noah Bell
- Eshelman School of Pharmacy, Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Adebimpe Adefolaju
- Eshelman Institute for Innovation, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Morrent Thang
- Department of Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Rajaneekar Dasari
- Eshelman Institute for Innovation, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Krishna Kanchi
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Alain Valdivia
- Eshelman School of Pharmacy, Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yang Yang
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Andrew Buckley
- Eshelman School of Pharmacy, Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Vivien Lettry
- Eshelman School of Pharmacy, Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Carolyn Quinsey
- Department of Neurosurgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yasmeen Rauf
- Department of Neurosurgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Neurology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - David Kram
- Division of Pediatric Hematology-Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Noah Cassidy
- School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Cyrus Vaziri
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - David L Corcoran
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Stephen Rego
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Yuchao Jiang
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Biostatistics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Lee M Graves
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Denise Dunn
- Department of Radiation Oncology, Duke University Medical Center, Durham, NC, USA
| | - Scott Floyd
- Department of Radiation Oncology, Duke University Medical Center, Durham, NC, USA
| | - Albert Baldwin
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Shawn Hingtgen
- Eshelman School of Pharmacy, Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
| | - Andrew B Satterlee
- Eshelman School of Pharmacy, Division of Pharmacoengineering and Molecular Pharmaceutics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Eshelman Institute for Innovation, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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Berquist J, Cassidy N, Touchie M, O'Brien W, Fine J. High-rise residential building ventilation in cold climates: A review of ventilation system types and their impact on measured building performance. Indoor Air 2022; 32:e13158. [PMID: 36437667 DOI: 10.1111/ina.13158] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/08/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Ventilation system performance in high-rise multi-unit residential buildings (MURBs) has a significant impact on resident wellbeing. While the importance of ventilation is well established, it is commonly overlooked since underperformance often goes undetected. This article presents a review and synthesis of ventilation system performance in high-rise MURBs located in cold climates as it relates to the three pillars of sustainability: economic (capital and operational cost), social (airflow control, indoor environmental quality, and occupant behavior and interactions), and ecological (energy and carbon). A meta-analysis revealed previous ventilation system designs generally prioritized economic sustainability, specifically, capital cost. However, priorities have recently shifted toward social and ecological sustainability. While this shift is positive, there is insufficient empirical evidence showing which ventilation system most effectively supports it. The decentralized heat/energy recovery ventilator (HRV/ERV) system shows the potential to improve upon the social and ecological sustainability of previous designs, such as the centralized pressurized corridor system, but the interconnected nature of performance metrics can cause improvements to one to negatively impact others. Therefore, further research is required to enhance ventilation system performance in cold climate, high-rise MURBs, and facilitate decision-making while designing and retrofitting these systems.
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Affiliation(s)
- Justin Berquist
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada
- Construction Research Centre, National Research Council Canada, Ottawa, Ontario, Canada
| | - Noah Cassidy
- Department of Civil and Mineral Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Marianne Touchie
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, Canada
- Department of Civil and Mineral Engineering, University of Toronto, Toronto, Ontario, Canada
| | - William O'Brien
- Department of Civil and Environmental Engineering, Carleton University, Ottawa, Ontario, Canada
| | - Jamie Fine
- Department of Civil and Mineral Engineering, University of Toronto, Toronto, Ontario, Canada
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Cassidy N, Sheahan D, Fox L, Brown L, Galvin L, Cassidy E, Sheridan M, O'Dowd G, O'Reilly KMA. Perspectives of Interstitial Lung Disease Patients and Carers During COVID-19. Ir Med J 2021; 114:410. [PMID: 34520645] [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: 06/13/2023]
Abstract
Aim To gain an understanding of the impact of COVID-19 on the daily life, healthcare needs, mental wellbeing and outlook of patients with Interstitial Lung Disease (ILD) and their caregivers. Methods ILD patients and caregivers were invited to participate in a quantitative survey. Respondents could self-select to then participate in in-depth structured telephone interviews. Survey data was compared to Department of Health COVID-19 public opinion tracker findings for the comparable time period. Results There were 170 survey respones (111 patients and 59 caregivers) and 14 in-depth interview participants. 32% (n=36) of patients and 42% (n=25) of caregivers expressed extreme worry regarding COVID-19 on a 1-10 scale. 83% (n=92) of patients expressed concern about safe hospital access, 33% (n=37) had received a telephone consultation with their clinician, 43% (n=48) reported test delays, 47% (n=52) were exercising less, 23% (n=26) reported worse sleep and 15% (n=17) reported being financially worse off. Carers reported that sleep was worse for 58% (n=34), 42% (n=25) reported being worse off financially, and 40% (n=24) reported a worse diet. Worry (66%, n=39), stress (51%, n=30), anxiety (49%, n=29) were commonly reported by carers. Discussion ILD patients and caregivers reported higher levels of worry regarding COVID-19 compared to the general public. Alternative pathways for quality ILD patient care and interventions to reduce the burden of care on ILD caregivers are required.
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Affiliation(s)
- N Cassidy
- The Irish Lung Fibrosis Association, Dublin, Ireland
| | - D Sheahan
- Invisio Ltd., Blessington, Co. Wicklow, Ireland
| | - L Fox
- The Irish Lung Fibrosis Association, Dublin, Ireland
- Mater Misericordiae University Hospital, Dublin, Ireland
| | - L Brown
- The Irish Lung Fibrosis Association, Dublin, Ireland
- St. Vincent's University Hospital, Dublin, Ireland
| | - L Galvin
- The Irish Lung Fibrosis Association, Dublin, Ireland
| | - E Cassidy
- The Irish Lung Fibrosis Association, Dublin, Ireland
| | - M Sheridan
- The Irish Lung Fibrosis Association, Dublin, Ireland
| | - G O'Dowd
- The Irish Lung Fibrosis Association, Dublin, Ireland
| | - K M A O'Reilly
- The Irish Lung Fibrosis Association, Dublin, Ireland
- Mater Misericordiae University Hospital, Dublin, Ireland
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Hughes AJ, Feeley IH, Ahern DP, Dodds MK, Cassidy N, Timlin M, Morris S, Synnott K, Butler JS. New Technologies in the Field of Orthopaedic and Spine Surgery - Navigating the Learning Curve. Ir Med J 2020; 113:148. [PMID: 34520659] [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] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- A J Hughes
- National Spinal Injuries Unit, Department of Trauma and Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - I H Feeley
- National Spinal Injuries Unit, Department of Trauma and Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - D P Ahern
- National Spinal Injuries Unit, Department of Trauma and Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - M K Dodds
- National Spinal Injuries Unit, Department of Trauma and Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - N Cassidy
- National Spinal Injuries Unit, Department of Trauma and Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - M Timlin
- National Spinal Injuries Unit, Department of Trauma and Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - S Morris
- National Spinal Injuries Unit, Department of Trauma and Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - K Synnott
- National Spinal Injuries Unit, Department of Trauma and Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - J S Butler
- National Spinal Injuries Unit, Department of Trauma and Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
- UCD School of Medicine & Medical Science, Mater Misericordiae University Hospital, Dublin, Ireland
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Cassidy N, Fox L, Sheridan M, Galvin L, Geoghegan M, Cassidy E. Opt-Out Organ Donation - a Patient Organisation’s Perspective. Ir Med J 2019; 112:979. [PMID: 31646847] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- N Cassidy
- Irish Lung Fibrosis Association, PO Box 10456, Blackrock, Co. Dublin
| | - L Fox
- Irish Lung Fibrosis Association, PO Box 10456, Blackrock, Co. Dublin
| | - M Sheridan
- Irish Lung Fibrosis Association, PO Box 10456, Blackrock, Co. Dublin
| | - L Galvin
- Irish Lung Fibrosis Association, PO Box 10456, Blackrock, Co. Dublin
| | - M Geoghegan
- Irish Lung Fibrosis Association, PO Box 10456, Blackrock, Co. Dublin
| | - E Cassidy
- Irish Lung Fibrosis Association, PO Box 10456, Blackrock, Co. Dublin
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Ahern DP, Gibbons D, Dodds M, Timlin M, Cassidy N, Morris S, Synnott K, Butler JS. Operative Management of Perinatal Lumbar Disc Herniation and Cauda Equina Syndrome: A Case Series. Ir Med J 2018; 111:843. [PMID: 30560639] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Introduction Perinatal lumbar discectomy for lumbar disc herniation or cauda equina syndrome is a rare clinical scenario. This case series outlines the surgical management of this clinical scenario at a national tertiary referral centre over a 10-year period Methods A retrospective review of all females who underwent discectomy / decompression for lumbar disc herniation or cauda equina syndrome in the perinatal period at a national tertiary referral centre for spine surgery over a 10-year period between January 2008 to December 2017. Results 6 cases required surgical intervention. All patients were successfully managed with surgical decompressive procedures and recovered well in the postoperative period without complication. Conclusions The principles of management remain the same in the pregnant and non-pregnant populations, although treatment options are complicated by the desire to avoid risk to the developing foetus. Surgical intervention is safe to both mother and baby and if performed promptly is associated with an excellent functional outcome.
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Affiliation(s)
- D P Ahern
- National Spinal Injuries Units, Department of Trauma & Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - D Gibbons
- Spine Service, Department of Trauma & Orthopaedic Surgery, Tallaght University Hospital, Dublin, Ireland
| | - M Dodds
- National Spinal Injuries Units, Department of Trauma & Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - M Timlin
- National Spinal Injuries Units, Department of Trauma & Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - N Cassidy
- National Spinal Injuries Units, Department of Trauma & Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - S Morris
- National Spinal Injuries Units, Department of Trauma & Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - K Synnott
- National Spinal Injuries Units, Department of Trauma & Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
| | - J S Butler
- National Spinal Injuries Units, Department of Trauma & Orthopaedic Surgery, Mater Misericordiae University Hospital, Dublin, Ireland
- Spine Service, Department of Trauma & Orthopaedic Surgery, Tallaght University Hospital, Dublin, Ireland
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Roth T, O’Daly S, Fenton M, Dowd S, Cassidy N, Allen J, Monteith D, Klassen S. 0339 Effectiveness of Recruiting Type 1 Narcolepsy Patients via Internet Based Pre-selection System. Sleep 2018. [DOI: 10.1093/sleep/zsy061.338] [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: 11/14/2022] Open
Affiliation(s)
- T Roth
- Henry Ford Hospital Sleep Disorders and Research Center, Detroit, MI
| | - S O’Daly
- Flamel Ireland/Avadel Ireland, Dublin, IREL
| | - M Fenton
- Flamel Ireland/Avadel Ireland, Dublin, IREL
| | - S Dowd
- Flamel Ireland/Avadel Ireland, Dublin, IREL
| | - N Cassidy
- Flamel Ireland/Avadel Ireland, Dublin, IREL
| | - J Allen
- Flamel Ireland/Avadel Ireland, Dublin, IREL
| | - D Monteith
- Flamel Ireland/Avadel Ireland, Dublin, IREL
| | - S Klassen
- Chilli Consulting Ltd., Salisbury, UNITED KINGDOM
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Flanagan M, Cawley DT, Cassidy N. Cervical spine fracture through a cervical disc replacement. Int J Surg Case Rep 2018; 47:80-88. [PMID: 29753275 PMCID: PMC5994689 DOI: 10.1016/j.ijscr.2018.03.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 10/04/2017] [Revised: 03/23/2018] [Accepted: 03/27/2018] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION We report a rare case of cervical spine trauma through a cervical disc replacement and adjacent multilevel disc fusions. Cervical disc replacement (CDR) is a viable option for the surgical treatment of degenerative disc disease however long term follow up data regarding this operative technique is poor specifically relating to traumatic complications. We know of no previous reports of bilateral cervical pedicle fractures occurring adjacent to CDR and anterior cervical spine instrumentation. PRESENTATION OF CASE A 46 year-old with a history of C6C7 CDR and C4-6 anterior cervical decompression and fusion was an unrestrained driver involved in a road traffic accident and suffered bilateral C7 pedicle fractures and a right C6C7 facet joint fracture-subluxation without neurological deficit. Reduction and fixation via a posterior approach achieved a satisfactory alignment and the patient made an uneventful recovery. DISCUSSION A significant force coupled with cervical fixation resulted in a bilateral pedicle fracture of the cervical spine with preserved neurological function. CONCLUSION The protective role of the CDR has not been previously demonstrated but may have played a role in this case. The authors believe the challenges encountered in the treatment of this patient provide valuable lessons in the management of complex cervical spine trauma in the setting of previous instrumentation.
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Affiliation(s)
- M Flanagan
- National Spinal Injuries Unit, Mater Misericordiae University Hospital, Eccles St, Dublin 7, Ireland.
| | - D T Cawley
- National Spinal Injuries Unit, Mater Misericordiae University Hospital, Eccles St, Dublin 7, Ireland
| | - N Cassidy
- National Spinal Injuries Unit, Mater Misericordiae University Hospital, Eccles St, Dublin 7, Ireland
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Roth T, O'Daly S, Fenton M, Dowd S, Cassidy N, Allen J, Monteith D, Klassen S. Effectiveness of recruiting type 1 narcolepsy patients via internet based pre-selection system. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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O'Daly S, Dowd S, Cassidy N, Monteith D, Roth T. Incorporating patient input into clinical trials. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Cassidy N, Duggan E. Potential pitfalls with the treatment of aquired methaemoglobinaemia. Ir Med J 2015; 108:27-28. [PMID: 25702356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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Cassidy N, Byrne I, Danaher D, Egan J. P125 The Irish Lung Fibrosis Association's 2000 Steps A Day Challenge: A Pilot Study To Evaluate A Novel Home Exercise Programme For Lung Fibrosis Patients. Thorax 2014. [DOI: 10.1136/thoraxjnl-2014-206260.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Affiliation(s)
- B Lenehan
- National Spinal Injuries Unit, Mater Misericordiae University Hospital, Dublin, Ireland.
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Lenehan B, Street J, Cassidy N. Paget’s disease of the cervical spine: case report and review. Ir J Med Sci 2012; 181:369-72. [DOI: 10.1007/s11845-010-0463-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2009] [Accepted: 01/12/2010] [Indexed: 10/19/2022]
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Casey P, Cassidy N, Tracey JA. Dosing errors with infant vitamin D3 supplements. Ir Med J 2012; 105:189. [PMID: 22973664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
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Cassidy N, Murphy L. Potential organ donor audit in Ireland: response from the Irish Lung Fibrosis Association. Ir Med J 2011; 104:219-220. [PMID: 21957692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Cassidy N, Casey PB, Tracey JA. Accidental ecstasy ingestion in a two year old. Ir Med J 2009; 102:62-63. [PMID: 19405327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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Onwuneme C, Abdalla K, Cassidy N, Hensey O, Ryan S. Radiological findings in cyclical administration of intravenous pamidronate in children with osteoporosis. Case Reports 2009; 2009:bcr2007129692. [DOI: 10.1136/bcr.2007.129692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Cassidy N, Lee SKK, Donegan CF, Tracey JA. Poisoning in older adults: the experience of the national poisons information centre. Ir Med J 2008; 101:268-270. [PMID: 19051613] [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: 05/27/2023]
Abstract
Data regarding the incidence, morbidity, and mortality of poisoning in older adults are limited. A retrospective review of enquiries to the National Poisons Information Centre, involving adults aged over-65 years, was conducted from 2001-2003 inclusive. Information on poisoning circumstances, patient demographics, type and number of agent(s), symptoms, enquiry source, location, and route of exposure was collated. 575 adults over-65 years of age were poisoned during the study period. 37.2% (n=214) of poisonings were intentional, 54.4% (n=313) were unintentional, in 5.6% (n=32) of cases the circumstances were unknown, and 2.8% (n=16) were requests for information only. 70.3% (n=404) of poisonings involved pharmaceuticals, 29.0% (n=167) chemicals, and 0.7% (n=4) foreign bodies. The principal pharmaceuticals included cardiovascular drugs, hypnotics/sedatives, and antidepressants. 145 (25%) patients were poisoned with multiple pharmaceutical agents. Overall, 301 (52.3%/) older adults were symptomatic and there were 5 fatalities. Substantial morbidity and mortality occurred following poisoning in older adults. Poison prevention strategies are needed to reduce toxic exposures.
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Affiliation(s)
- N Cassidy
- National Poisons Information Centre, Beaumont Hospital, Dublin.
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Onwuneme C, Abdalla K, Cassidy N, Hensey O, Ryan S. Radiological findings in cyclical administration of intravenous pamidronate in children with osteoporosis. Arch Dis Child 2007; 92:1087. [PMID: 18032639 PMCID: PMC2066092 DOI: 10.1136/adc.2007.129692] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- C Onwuneme
- Children's University Hospital, Temple Street, Dublin, Ireland.
| | - K Abdalla
- C Onwuneme, K Abdalla, N Cassidy, O Hensey, S Ryan, Children's University Hospital, Temple Street, Dublin, Ireland
| | - N Cassidy
- C Onwuneme, K Abdalla, N Cassidy, O Hensey, S Ryan, Children's University Hospital, Temple Street, Dublin, Ireland
| | - O Hensey
- C Onwuneme, K Abdalla, N Cassidy, O Hensey, S Ryan, Children's University Hospital, Temple Street, Dublin, Ireland
| | - S Ryan
- C Onwuneme, K Abdalla, N Cassidy, O Hensey, S Ryan, Children's University Hospital, Temple Street, Dublin, Ireland
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Cassidy N, Tracey JA. Morbidity and mortality following inadvertent poisoning with decanted chemicals. Ir Med J 2005; 98:175-8. [PMID: 16097509] [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: 05/03/2023]
Abstract
Decanting of chemicals from their original containers is a hazardous practice that can result in inadvertent poisoning. We conducted a four-year prospective observational study to analyse the epidemiology of accidental poisoning with decanted chemicals. 157 patients were poisoned following accidental exposure to chemicals transferred to innocuous containers. 106 patients attended hospital emergency departments, 17 attended a general practitioner and 34 were instructed to seek medical advice if symptomatic. 112 patients developed clinical features, 9 patients required admission to intensive care and 4 of these needed intubation and ventilation. There was 1 fatality following inadvertent ingestion of paraquat. The predominant symptoms were gastrointestinal upset and a burning sensation in the mouth, throat, and stomach. Decanted chemicals included household, industrial, automobile, and agricultural products. Caustic agents accounted for approximately 33% of decanted chemicals. Decanting of chemicals into innocuous containers results in significant morbidity, mortality, and cost to the health service.
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Affiliation(s)
- N Cassidy
- The National Poisons Information Centre, Beaumont Hospital, Dublin
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Tracey JA, Cassidy N, Casey PB, Ali I. Bupropion (Zyban) toxicity. Ir Med J 2002; 95:23-4. [PMID: 11928786] [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: 02/24/2023]
Abstract
Bupropion is a monocyclic antidepressant structurally related to amphetamine. Zyban, a sustained-release formulation of bupropion hydrochloride, was recently released in Ireland, as a smoking cessation aid. In the initial 6 months since it's introduction, 12 overdose cases have been reported to The National Poisons Information Centre. 8 patients developed symptoms of toxicity. Common features included tachycardia, drowsiness, hallucinations and convulsions. Two patients developed severe cardiac arrhythmias, including one patient who was resuscitated following a cardiac arrest. All patients recovered without sequelae. We report a case of a 31 year old female who required admission to the Intensive Care Unit for ventilation and full supportive therapy, following ingestion of 13.5g bupropion. Recurrent seizures were treated with diazepam and broad complex tachycardia was successfully treated with adenosine. Zyban caused significant neurological and cardiovascular toxicity in overdose. The potential toxic effects should be considered when prescribing it as a smoking cessation aid.
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Affiliation(s)
- J A Tracey
- The National Poisons Information Centre, Beaumont Hospital, Dublin, Ireland
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23
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Affiliation(s)
- S Morris
- Department of Orthopaedic Surgery, The Children's Hospital, Temple Street, Dublin 1, Ireland
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24
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Youssef PP, Kraan M, Breedveld F, Bresnihan B, Cassidy N, Cunnane G, Emery P, Fitzgerald O, Kane D, Lindblad S, Reece R, Veale D, Tak PP. Quantitative microscopic analysis of inflammation in rheumatoid arthritis synovial membrane samples selected at arthroscopy compared with samples obtained blindly by needle biopsy. Arthritis Rheum 1998; 41:663-9. [PMID: 9550475 DOI: 10.1002/1529-0131(199804)41:4<663::aid-art13>3.0.co;2-l] [Citation(s) in RCA: 94] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To evaluate microscopic measures of inflammation in rheumatoid arthritis synovial tissue samples selected at arthroscopy compared with those obtained blindly by needle biopsy from the suprapatellar pouch (SPP) of the same joint. METHODS Samples were selected at knee arthroscopy from the SPP and the lateral and medial gutters. Immediately following arthroscopy, a biopsy needle was inserted through the same portal into the SPP by a second investigator, and 3 further samples were obtained blindly. Using standard immunohistologic methods, all samples were analyzed by a single investigator without knowledge of the original tissue location and biopsy technique. Following staining with anti-CD3 and anti-CD68 monoclonal antibodies, T lymphocyte and macrophage infiltration were measured by quantitative analysis. RESULTS Synovial tissues from 14 patients were analyzed. In comparing microscopic measures of inflammation using the 2 procedures, mean scores of lining cell depth and the percentage of CD68+ cells in the lining layer correlated positively (tau = 0.59, P = 0.003 and tau = 0.73, P = 0.0003, respectively). In the sublining layer, CD3+ cell counts also correlated significantly (tau = 0.71, P = 0.0004). Sublining CD68+ cell counts did not correlate. This was explained by the observation that CD68+ cell infiltration in areas adjacent to articular cartilage was significantly greater than in the SPP (P = 0.01), suggesting preferential trafficking to this site by macrophages, but not by T lymphocytes. Macroscopic appearance at arthroscopy did not predict microscopic features. CONCLUSION Most microscopic measures of inflammation in synovial tissue samples obtained blindly from the SPP were similar to those determined in samples selected at arthroscopy. However, measurements in samples from the SPP may underestimate the intensity of macrophage infiltration in areas more adjacent to cartilage. These observations have important implications for future study of macrophage function in synovial tissue.
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Affiliation(s)
- P P Youssef
- University College, St. Vincent's Hospital, Dublin, Ireland
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25
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Mulcahy D, Cunningham K, McCormack D, Cassidy N, Walsh M. Informed consent from whom? J R Coll Surg Edinb 1997; 42:161-4. [PMID: 9195806] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
To obtain legally safe informed consent requires that the patient has a 'substantial understanding' of the proposed procedure and that the doctor obtaining the informed consent has sufficient knowledge to explain the nature of the procedure to the patient. In this paper we have shown that significant misunderstanding exists among non-specialist junior doctors of certain common orthopaedic procedures and conditions. Junior doctors often lack sufficient technical training to fully inform their patients and thus meet legal requirements. The implications of this are that the onus falls even more on specialists to ensure that their patients receive a more detailed explanation of the proposed intervention.
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Affiliation(s)
- D Mulcahy
- Department of Orthopaedic Surgery, Mater Misericordiae Hospital, Dublin, Ireland
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26
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Abstract
Previous studies have implicated transforming growth factor-beta (s)(TGF-beta) in both development. Here TGF-beta isoforms in dentine extracellular matrix were analysed because these molecules may participate in dental issue repair. EDTA-soluble and collagenase-released fractions were isolated from human crown and root and rabbit incisor dentine samples and analysed for TGF-beta isoforms. TGF-beta(1) was the major isoform detected in all samples and the only isoform detected in human dentine samples. TGF-beta(2) was detected only in the collagenase-released fraction of rabbit incisor dentine and was present at low levels. TGF-beta(3) was detected in both EDTA-soluble and collagenase-released fractions of rabbit dentine. Greater levels of the TGF-beta(1) isoform were detected in the rabbit than human dentine samples and some differences in distribution amongst the two tissue fractions were observed between these species. The presence of these isoforms of TGF-beta in dentine may provide a reservoir of growth factor in the matrix that could participate in processes leading to tissue repair after injury.
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Affiliation(s)
- N Cassidy
- School of Dentistry, University of Birmingham, UK
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27
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Smith AJ, Cassidy N, Perry H, Bègue-Kirn C, Ruch JV, Lesot H. Reactionary dentinogenesis. Int J Dev Biol 1995; 39:273-80. [PMID: 7626417] [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: 01/26/2023]
Abstract
Reactionary dentinogenesis is the secretion of a tertiary dentine matrix by surviving odontoblast cells in response to an appropriate stimulus. Whilst this stimulus may be exogenous in nature, it may also be from endogenous tissue components released from the matrix during pathological processes. Implantation of isolated dentine extracellular matrix components in unexposed cavities of ferret teeth led to stimulation of underlying odontoblasts and a response of reactionary dentinogenesis. Affinity chromatography of the active components prior to implantation and assay for growth factors indicated that this material contained significant amounts of TGF-beta 1, a growth factor previously shown to influence odontoblast differentiation and secretory behavior. Reactionary dentinogenesis during dental caries probably results from solubilization of growth factors, TGF-beta in particular, from the dentine matrix which then are responsible for initiating the stimulatory effect on the odontoblasts. Compositional differences in tertiary dentine matrices beneath carious lesions in human teeth have also been shown indicating modulation of odontoblast secretion during reactionary and reparative dentinogenesis.
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Affiliation(s)
- A J Smith
- School of Dentistry, University of Birmingham, United Kingdom
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Calleary J, Tansey C, McCormack J, Kapur S, Doyle J, Flynn J, Curran AJ, Smyth D, Kane B, Toner M, Timon CVI, Cronin KJ, O’Donoghue J, Darmanin FX, McCann J, Campbell F, Redmond HP, Condron C, Bouchier-Hayes D, Aizaz K, MacGowan SW, O’Donnell AF, Luke DA, McGovern E, Morrin M, Khan F, Delaney PV, Lavelle SM, Kanagaratnam B, Cuervas-Mons V, Gauthier A, Gips C, Santos RMD, Molino GP, Theodossi A, Tsiftsis DD, Boyle CJO, Boyle TJ, Kerin MJ, Courtney DM, Quill DS, Given HF, O’Brien DF, Kelly EJ, Kelly J, Richardson D, Fanning NF, Brennan R, Horgan PG, Keane FBV, Reid S, Walsh C, Patock R, Hall J, Evoy D, Magd-Eldin M, Curran D, Keeling P, Ade-Ajayi N, Spitz L, Kiely E, Drake D, Klein N, O’Hanlon DM, Karat D, Callanan K, Crisp W, Griffin SM, Murchan PM, Mancey-Jones B, Sedman P, Mitchell CJ, Macfie J, Scott D, Raimes S, O’Boyle CJ, Maher D, Willsher PC, Robertson JFR, Hilaly M, Blarney RW, Shering SG, Mitrovic S, Rahim A, McDermott EW, O’Higgins NJ, Murphy CA, Morgan D, Elston CW, Ellis IO, O’Sullivan MP, O’Riordain MG, Stack JP, Barry MK, Ennis JT, Fitzpatrick JM, Gorey TF, Kollis J, Mullet H, Smith DF, Zbar A, Murray MJ, McDermott EWM, Smyth PPA, Kapucouglu N, Holmes S, Holland P, McCollum PT, da Silva A, de Cossart L, Hamilton D, Kelly CJ, Stokes K, Broe P, Crinnion J, Grace PA, Morton N, Ross N, Naidu S, Gervaz P, Holdsworth RJ, Stonebridge PA, O’Donnell A, Carson K, Phelan D, McBrinn S, McCarthy D, Javadpour H, McCarthy J, Neligan M, Caldwell MTP, McGrath JP, Byrne PJ, Walsh TN, Lawlor P, Timon C, Stuart RC, Murray K, Carney A, Johnston JG, Egan B, O’Connell PR, Donoghue J, Pollock A, Hyde D, Hourihan D, Tanner WA, Donohue J, Fanning N, Horgan P, Mahmood A, Dave K, Stewart J, Cole A, Hartley R, Brennan TG, O’Donoghue JM, O’Sullivan ST, Beausang E, Panchal J, O’Shaughnessy M, O’Grady P, Watson RWG, Johnstone D, O’Donnell J, McCarthy E, Flynn N, O’Dwyer T, Curran C, Duggan S, Tierney S, Qian Z, Lipsett PA, Pitt HA, Lillemoe KD, Kollias J, Morgan DAL, Young IS, Regan MC, Geraghty JG, Suilleabhain CBO, Rodrick ML, Horgan AF, Mannick JA, Lederer JA, Hennessy TPJ, Canney M, Feeley K, Connolly CE, Abdih H, Finnegan N, Da Costa M, Shafii M, Martin AJ, Mulcahy D, Dolan M, Stephens M, McManus F, Walsh M, O’Brien DP, Phillips JP, Carroll TA, O’Brien D, Rawluk D, Sullivan T, Herbert K, Kerins M, O’Donnell M, Lawlor D, McHugh M, Edwards G, Rice J, McCabe JP, Sparkes J, Hayes S, Corcoran M, Bredin H, O’Keeffe D, Candon J, Mulligan ED, Lynch TH, Mulvin D, Vingers L, Smith JM, Corby H, Barry K, Eardley I, Frick J, Goldwasser B, Wiklund P, Rogers E, Weaver R, Scardino PT, Kumar R, Puri P, Adeyoju AB, Lynch T, Corr J, McDermott TED, Grainger R, Thornhill J, Butler M, Keegan D, Hegarty N, McCarthy P, Mirza AH, O’Sullivan M, Neary P, O’Connor TPF, McCormack D, Cunningham K, Cassidy N, Sullivan T, Mulhall K, Murphy M, Puri A, Dhaif B, Carey PD, Delicata RJ, Abbasakoor F, Stephens RB, Hussey AJ, Garrihy B, Nolan DJ, McAnena OJ, Fitzgerald R, Watson D, Coventry BJ, Malycha P, Ward SC, Kwok SPY, Lau WY, Bergman JW, Hacking GEB, Metreweli C, Li AKC, Madhavan P, Donohoe J, O’Donohue M, McNamara DA, O’Donohoe MK. Sir Peter Freyer Memorial Lecture and Surgical Symposium 15th and 16th September, 1995. Ir J Med Sci 1995. [DOI: 10.1007/bf02969896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Smith AJ, Tobias RS, Cassidy N, Bégue-Kirn C, Ruch JV, Lesot H. Influence of substrate nature and immobilization of implanted dentin matrix components during induction of reparative dentinogenesis. Connect Tissue Res 1995; 32:291-6. [PMID: 7554930 DOI: 10.3109/03008209509013736] [Citation(s) in RCA: 33] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The biological effects of isolated soluble dentin extracellular matrix components on the induction of reparative dentinogenesis in exposed cavities in ferret canine teeth have been shown to be blocked by immobilizing the extracellular matrix components on nitrocellulose or Millipore membranes during implantation. This contrasts with the picture of induction of odontoblast-like cell differentiation and reparative dentin deposition on existing insoluble dentin matrix of the exposure walls when the extracellular matrix components are implanted in lyophilized form. These data indicate the importance of an existing insoluble dentin matrix in providing a substrate to potentiate the growth factor-like activity of soluble isolated dentin extracellular matrix components in the induction of reparative dentinogenesis.
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Affiliation(s)
- A J Smith
- School of Dentistry, University of Birmingham, UK
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Abstract
The possible effects of isolated dentine matrix components on odontoblast secretory activity were investigated in vivo by implantation of lyophilized fractions of these components into cavities prepared in ferret canine teeth. After implantations as short as 14 days there was significant deposition of reactionary dentine by the odontoblasts beneath the cavity and this response increased in a non-linear manner with time of implantation. In contrast, control cavities lacking the dentine matrix components showed no evidence of reactionary dentine deposition. Examination of teeth at early periods of implantation (2 and 5 days) indicated that odontoblast death had not occurred as a result of the operative procedures and that the response was one of stimulation of existing odontoblasts rather than that of induction of a new generation of odontoblast-like cells. The mechanisms of odontoblast stimulation by the dentine matrix components remain to be elucidated, but could be mediated by growth factors within the dentine matrix preparations.
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Affiliation(s)
- A J Smith
- University of Birmingham School of Dentistry, U.K
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Abstract
Magnetic Resonance Imaging (MRI) examination was carried out on 44 patients who had spinal injuries with neurological involvement. The technique provided valuable information about the nature of the injuries and, in particular, about the state of the spinal cord. The appearances of the cord on MRI ranged from normal, to oedema, to more severe damage such as cord haemorrhage or transection or, in later cases, myelomalacia. The appearance of the cord on MRI correlated strongly with both the severity of the neurological deficit and also the degree of subsequent recovery. In the assessment of the acute spinal injury, MRI has been shown to be a good prognostic indicator; it may also help to identify which patients are likely to benefit from early decompression.
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Affiliation(s)
- J O'Beirne
- Department of Orthopaedics, Mater Misericordiae Hospital, Dublin, Ireland
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Abstract
A case is described of fatal perforation of the small bowel through an area of undiagnosed secondary involvement from primary thyroid lymphoma during treatment by chemotherapy. There is a known association between primary thyroid lymphoma and gastrointestinal metastases. To avoid this lethal complication, a specific search should be made for gastrointestinal involvement before chemotherapy is started in patients with advanced thyroid lymphoma.
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Affiliation(s)
- E W McDermott
- Department of Surgery, Mater Misericordiae Hospital, Dublin, Ireland
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Cassidy N. Conversion to thermal fluid system will save laundry $50,000 a year. Laund News 1986; 12:1, 27. [PMID: 10279829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Cassidy N. The smaller on-premise laundry is becoming technologically advanced. Laund News 1986; 12:17. [PMID: 10279401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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35
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Cassidy N. Antiquated hospital laundry is updated to cut down on maintenance, labor costs. Laund News 1986; 12:13. [PMID: 10279400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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36
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Cassidy N. Automated chemical injection system helped central laundry improve production. Laund News 1986; 12:3. [PMID: 10279044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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37
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Cassidy N. Linen management program at hospital reduced consumption, aided distribution. Laund News 1986; 12:11, 34. [PMID: 10279038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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38
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Cassidy N. New continuous batch washing system helps central laundry to increase output. Laund News 1986; 12:19, 24. [PMID: 10277660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
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39
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Cassidy N. New association is AHA affiliate. Healthcare laundry managers sought. Laund News 1986; 12:1, 26. [PMID: 10279405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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40
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Cassidy N. Shared services laundry was upgraded to stay cost-effective and competitive. Laund News 1986; 12:3. [PMID: 10276387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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