27 results on '"Harper, Colin"'
Search Results
2. Secondary and Exploratory Outcomes of the Subthreshold Nanosecond Laser Intervention Randomized Trial in Age-Related Macular Degeneration: A LEAD Study Report
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Wu, Zhichao, Luu, Chi D., Hodgson, Lauren A.B., Caruso, Emily, Brassington, Kate H., Tindill, Nicole, Aung, Khin Zaw, Harper, Colin A., Wickremasinghe, Sanjeewa S., Sandhu, Sukhpal S., McGuinness, Myra B., Chen, Fred K., Chakravarthy, Usha, Arnold, Jennifer J., Heriot, Wilson J., Durkin, Shane R., Wintergerst, Maximilian W.M., Gorgi Zadeh, Shekoufeh, Schultz, Thomas, Finger, Robert P., Cohn, Amy C., Baglin, Elizabeth K., Sharangan, Pyrawy, and Guymer, Robyn H.
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- 2019
- Full Text
- View/download PDF
3. Interpretation of Subretinal Fluid Using OCT in Intermediate Age-Related Macular Degeneration
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Lek, Jia Jia, Caruso, Emily, Baglin, Elizabeth K., Sharangan, Pyrawy, Hodgson, Lauren A.B., Harper, Colin A., Rosenfeld, Philip J., Luu, Chi D., and Guymer, Robyn H.
- Published
- 2018
- Full Text
- View/download PDF
4. Information Privacy in Healthcare — The Vital Role of Informed Consent.
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McClelland, Roy and Harper, Colin M.
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DATA privacy , *MEDICAL ethics laws , *DATA protection laws , *INFORMED consent (Medical law) , *DISCLOSURE , *PROFESSIONAL ethics - Abstract
The use and disclosure of patient information is subject to multiple legal and ethical obligations. Within European human rights law the differences relating to consent are reflected in the separate requirements of data protection law, the common law, and professional ethics. The GDPR requires explicit consent. This contrasts with the ethical and common law availability of reliance on implied consent for the use of patient information for that patient's care and treatment. For any proposed use of patient information for healthcare purposes other than direct care, even where GDPR may be satisfied if the patient refuses to consent to disclosure, the information should not normally be disclosed. For any proposed use or disclosure outside healthcare the justification should normally be consent. However, consent is often not possible or appropriate and an overriding public interest can be relied upon to justify the use or disclosure, both legally and ethically. [ABSTRACT FROM AUTHOR]
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- 2023
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5. P20-045-23 Effect of Antibiotics and Fecal Microbiota Transplantation on Diet-Modulated Microbiota
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Solch-Ottaiano, Rebecca, Harper, Colin, Engler-Chiurazzi, Elizabeth, Zhao, Yinghong, Bix, Gregory, and Maraganore, Demetrius
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- 2023
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- View/download PDF
6. The Central Retinal Vein Bypass Study: A Trial of Laser-induced Chorioretinal Venous Anastomosis for Central Retinal Vein Occlusion
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McAllister, Ian L., Gillies, Mark E., Smithies, Lynne A., Rochtchina, Elena, Harper, Colin A., Daniell, Mark D., Constable, Ian J., and Mitchell, Paul
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- 2010
- Full Text
- View/download PDF
7. Complications of diabetes in urban Indigenous Australians: The DRUID study
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Maple-Brown, Louise, Cunningham, Joan, Dunne, Karin, Whitbread, Cherie, Howard, Diane, Weeramanthri, Tarun, Tatipata, Shaun, Dunbar, Terry, Harper, Colin A., Taylor, Hugh R., Zimmet, Paul, O’Dea, Kerin, and Shaw, Jonathan E.
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- 2008
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8. Development of an Industry Foundation Classes Assembly Viewer
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Owolabil, Abidemi, Anumba, Chimay J., El-Hamalawi, Ashraf, and Harper, Colin
- Subjects
Construction industry -- Analysis ,Industrial project management ,Project management ,Information management ,Information accessibility ,Computers ,Engineering and manufacturing industries ,Science and technology - Abstract
The construction industry has invested considerable effort into integration of project information in the last decade. One such effort is the definition of Industry Foundation Classes (IFCs) to facilitate data sharing across applications through a shared project model. In order to achieve the integration objectives, the industry software vendors need to commit to the implementation of IFC in their products. IFC is defined in EXPRESS, which is a platform-independent, object-flavored, data modeling language. The EXPRESS-based models must be translated into some programming language model for specific implementation. To achieve this, developers need to evaluate and select a suitable model and programming language for their implementation. Developers therefore need to understand both EXPRESS and a host of programming languages. This initial knowledge requirement may hinder the take-off or adoption of IFC-based implementation. This paper describes a software solution that reduces this initial knowledge requirement considerably by providing a .NET class library translation and an implementation view of the IFC model, based on the EXPRESS definitions. Complemented by the online documentation provided with the IFC definitions, the software provides a hierarchical view of the IFC-based programming objects with drill-down facility for developers to capture and appreciate the information requirement for specific objects.
- Published
- 2006
9. Effect of diet on cognitive function and gut microbiota.
- Author
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Solch, Rebecca J, Engler‐Chiurazzi, Elizabeth, Harper, Colin, Wasson, Savannah, Ogbonna, Sharon, Ouvrier, Blake, McDonald, Katherine, Wang, Hanyun, Biose, Ifechukwude Joachim, Bix, Gregory J, and Maraganore, Demetrius M
- Abstract
Background: Alterations in the gut microbiota have been observed in patients with mild cognitive impairment and Alzheimer's disease. Dietary consumption directly modulates gut microbiota; therefore, the quality of a diet may impact cognitive function and susceptibility to dementia. We hypothesized that consumption of the nutrient dense Mediterranean diet (MeDi) would improve cognitive function through beneficial changes to the gut microbiota as compared to the diet primarily consumed by Americans, the Western diet (WD). Method: Ten‐week‐old Sprague Dawley male rats were assigned a MeDi (n = 10) or WD (n = 9). After three months, Morris water maze (MWM) was used to assess spatial reference memory cognition. MWM data were analyzed with two‐way RM ANOVA. Fecal samples were collected prior to the MWM. Microbial composition was determined by 16S rRNA sequencing, and analyses included Mann‐Whitney with false discovery rate. Result: The MeDi group also spent significantly more time in the target quadrant during probe testing (p = 0.03) and was quicker to reach the platform on reversal testing (p = 0.004), indicative of improved cognitive flexibility. Microbiota α‐diversity indices, Shannon (p = 0.053), Simpson (p = 0.054), and Chao1 (p = 0.056), had a trend to be increased in the MeDi. Microbiota β‐diversity was dissimilar between diets (p<0.001). At the phylum level, Actinobacteria decreased and Patescibacteria increased with consumption of the MeDi as compared to the WD. Actinobacteria relative abundance correlated with MWM time in target quadrant (r = ‐0.58, p = 0.009). Further, relative abundance of Actinobacteria and Patescibacteria correlated with MWM reversal distance to reach platform (Actinobacteria, r = 0.77, p = 0.0001; Patescibacteria, r = ‐0.59, p = 0.007). Conclusion: The MeDi maintained long‐term spatial memory, as measured by the MWM, compared to the WD. Additionally, diet‐modulated gut microbiota at the phylum level and these changes were correlated with cognitive function. Modulation of the gut microbiota through a neuroprotective diet, such as the MeDi, may serve as a method to improve cognitive function. [ABSTRACT FROM AUTHOR]
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- 2022
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10. Cataract surgery in high-risk age-related macular degeneration: a randomized controlled trial
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Hooper, Claire Y, Lamoureux, Ecosse L, Lim, Lyndell, Fraser-Bell, Samantha, Yeoh, Jonathan, Harper, Colin A, Keeffe, Jill E, and Guymer, Robyn H
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- 2009
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11. Sorsbyʼs Fundus Dystrophy: a case report to raise awareness of the disease and potential future treatments
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Szental, Joshua A, Harper, Colin A, Baird, Paul N, Michalova, Kira, and Guymer, Robyn H
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- 2009
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12. Homocysteine and Diabetic Retinopathy
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BRAZIONIS, LAIMA, ROWLEY, KEVIN, Sr., ITSIOPOULOS, CATHERINE, HARPER, COLIN ALEXANDER, and OʼDEA, KERIN
- Published
- 2008
13. Effect of Diet on Cognitive Function and Gut Microbiota in Aged Rats.
- Author
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Solch‐Ottaiano, Rebecca J, Harper, Colin, Engler‐Chiurazzi, Elizabeth, Wang, Hanyun, Ouvrier, Blake, McDonald, Katherine, Bix, Gregory J, Biose, Ifechukwude Joachim, and Maraganore, Demetrius M
- Abstract
Background: Many patients with mild cognitive impairment and Alzheimer's disease have alterations in the gut microbiota. Dietary consumption directly modulates gut microbiota; therefore, the quality of a diet may impact cognitive function and susceptibility to memory impairments. We hypothesized that consumption of the Mediterranean diet (MeDi) versus the Western diet (WD) will improve cognitive function through beneficial changes to the gut microbiota. Method: Twelve‐month‐old male Fischer 344 rats (n = 14/group) were randomly assigned to a MeDi, WD, or Chow diet (positive control to MeDi) for three months. Animals then underwent neurobehavioral assessments (n = 10/group) including the Morris water maze and radial arm water maze to assess aspects of short‐ and long‐term memory. Data were analyzed via One‐ or Two‐Way Repeated Measures ANOVA where appropriate. Fecal samples were collected prior to the behavior. Microbial composition was determined by 16S rRNA sequencing. Result: The MeDi and WD groups consumed more kcals (p<0.05) at various weeks and weighed more compared to the chow group (p<0.05). There was no difference in time to reach the platform between the MeDi and WD or Chow groups in the Morris water maze, however, animals consuming the chow diet were quicker to reach the platform compared to the WD (p = 0.046). There were no differences in total errors measured by the radial arm water maze (p = 0.50) between diets. Gut microbiota composition (β‐diversity) was distinct between diets (Weighted and Unweighted UniFrac, p<0.001). Conclusion: There were no differences in short‐ or long‐term memory in aged animals consuming a MeDi or WD for three months. Diet‐modulated the gut microbiota as exhibited by differences in β‐diversity between the MeDi, WD, and Chow. As animals consumed a chow diet throughout their lifespan, the MeDi or WD may need to be started earlier in life to exhibit differences. Funding: NIH Mentoring Research Excellence in Aging and Regenerative Medicine5P20GM103629‐10 [ABSTRACT FROM AUTHOR]
- Published
- 2023
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14. A Mediterranean Diet Enhances Cognitive Function and Modulates the Gut Microbiota
- Author
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Solch, Rebecca, Engler-Chiurazzi, Elizabeth, Harper, Colin, Wasson, Savannah, Ogbonna, Sharon, Ouvrier, Blake, Wang, Hanyun, McDonald, Katherine, Biose, Ifechukwude, Gregory, Bix, and Maraganore, Demetrius
- Published
- 2022
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15. Exercise rescues mitochondrial coupling in aged skeletal muscle: a comparison of different modalities in preventing sarcopenia.
- Author
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Harper, Colin, Gopalan, Venkatesh, and Goh, Jorming
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SKELETAL muscle , *MUSCLE mass , *SARCOPENIA , *MITOCHONDRIAL membranes , *MUSCLE aging , *MITOCHONDRIA , *OLDER people - Abstract
Skeletal muscle aging is associated with a decline in motor function and loss of muscle mass- a condition known as sarcopenia. The underlying mechanisms that drive this pathology are associated with a failure in energy generation in skeletal muscle, either from age-related decline in mitochondrial function, or from disuse. To an extent, lifelong exercise is efficacious in preserving the energetic properties of skeletal muscle and thus may delay the onset of sarcopenia. This review discusses the cellular and molecular changes in skeletal muscle mitochondria during the aging process and how different exercise modalities work to reverse these changes. A key factor that will be described is the efficiency of mitochondrial coupling-ATP production relative to O2 uptake in myocytes and how that efficiency is a main driver for age-associated decline in skeletal muscle function. With that, we postulate the most effective exercise modality and protocol for reversing the molecular hallmarks of skeletal muscle aging and staving off sarcopenia. Two other concepts pertinent to mitochondrial efficiency in exercise-trained skeletal muscle will be integrated in this review, including- mitophagy, the removal of dysfunctional mitochondrial via autophagy, as well as the implications of muscle fiber type changes with sarcopenia on mitochondrial function. [ABSTRACT FROM AUTHOR]
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- 2021
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16. Assembling (Post)modernism: The Utopian Philosophy of Ernst Bloch
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Harper, Colin M.
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Assembling (Post)modernism: The Utopian Philosophy of Ernst Bloch (Book) ,Books -- Book reviews ,Philosophy and religion - Abstract
John Miller Jones. New York: Peter Lang, 1995. xvi + 202 pp. $45.95. In its earlier (1993) incarnation as a doctoral thesis this work was entitled 'Hope among the Remnants [...]
- Published
- 1997
17. Ernst Bloch
- Author
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Harper, Colin M.
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Ernst Bloch (Book) ,Books -- Book reviews ,Philosophy and religion - Abstract
Vince Geoghegan. London & New York: Routledge, 1996. viii + 197 pp. A short introduction to the complex thought of Bloch has been overdue for a long time; interest in [...]
- Published
- 1997
18. Early worsening of diabetic retinopathy due to intensive glycaemic control.
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Lim, Shueh Wen, van Wijngaarden, Peter, Harper, Colin A., and Al‐Qureshi, Salmaan H.
- Subjects
DIABETIC retinopathy ,ENDOTHELIAL growth factors ,DIABETES complications - Abstract
The prevalence of diabetes and diabetic retinopathy is increasing around the world. Glycaemic control is important in reducing the long‐term risk of complications of diabetes, however intensive glycaemic control, particularly in patients with longstanding and poorly controlled diabetes, is associated with the risk of early worsening of diabetic retinopathy and vision loss. We present two clinical cases to illustrate the presentation of early worsening and to highlight a role for intravitreal anti‐vascular endothelial growth factor therapies in ameliorating this phenomenon, as well as a review of the current understanding of this phenomenon. We emphasise the importance of identifying individuals at risk of early worsening of diabetic retinopathy and recommend regular ophthalmological review during the period of intensive glycaemic control to ensure optimal visual outcomes. [ABSTRACT FROM AUTHOR]
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- 2019
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19. An evaluation of mental health service provision in Northern Ireland.
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Montgomery, Lorna, Wilson, George, Houston, Stanley, Davidson, Gavin, and Harper, Colin
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MENTAL health services ,MENTAL health services evaluation ,ATTITUDE (Psychology) ,EXECUTIVES ,FOCUS groups ,HEALTH care rationing ,INTERVIEWING ,RESEARCH methodology ,MEDICAL needs assessment ,MEDICAL personnel ,HEALTH policy ,MENTAL health personnel ,NEEDS assessment ,QUALITY assurance ,QUESTIONNAIRES ,SURVEYS ,QUALITATIVE research ,JUDGMENT sampling ,THEMATIC analysis ,CAREGIVER attitudes ,PATIENTS' attitudes ,EVALUATION ,ECONOMICS - Abstract
Although Northern Ireland has high levels of mental health problems, there has been a relative lack of systematic research on mental health services that can provide an evidence base for legal, policy, and service developments. This article aims to provide a review of the central issues relating to mental health service provision in Northern Ireland, and to gather the perceptions of different stakeholders of these services. The study utilised in‐depth qualitative interviews, focus groups, and an online survey to collect data from respondents throughout the region. This method involved the completion of semistructured interviews with significant mental health commissioners and senior managers, and with service‐users and their key workers. Focus groups sessions were also completed with mental health professionals, service‐users, and carers. Data collection occurred between December 2014 and June 2015. Thematic analysis was used to identify key issues. The findings identified that considerable progress had been made not only in the development of mental health services in the last decade, but also highlighted the significant limitations in current services. Most notably, strengths in provision included the transition from long‐stay hospital care to community‐based services and person‐centred approaches. The researchers identified the need to improve funding, address problems with fragmentation, and gaps in service provision. Based on these findings, the authors consider the implications for practice and policy relating to the human and organisational aspects of service development. In particular, services should be developed focusing on a recovery ethos and on person‐centred and relationship‐based approaches. The needs of carers should additionally be considered and programmes developed to tackle stigma. [ABSTRACT FROM AUTHOR]
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- 2019
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20. Task sharing: Development of evidence-based co-management strategy model for screening, detection, and management of diabetic retinopathy.
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Shah, Mufarriq, Noor, Ayesha, Ormsby, Gail M., Islam, Fakir Amirul, Harper, Colin Alex, and Keeffe, Jill Elizabeth
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- 2018
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21. Implications of divergences in adult protection legislation.
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Montgomery, Lorna, Anand, Janet, Mackay, Kathryn, Taylor, Brian, Pearson, Katherine C., and Harper, Colin M.
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PREVENTION of abuse of older people ,SAFETY regulations ,PUBLIC welfare ,ADULTS - Abstract
Purpose – The purpose of this paper is to explore the similarities and differences of legal responses to older adults who may be at risk of harm or abuse in the UK, Ireland, Australia and the USA. Design/methodology/approach – The authors draw upon a review of elder abuse and adult protection undertaken on behalf of the commissioner for older people in Northern Ireland. This paper focusses on the desk top mapping of the different legal approaches and draws upon wider literature to frame the discussion of the relative strengths and weaknesses of the different legal responses. Findings – Arguments exist both for and against each legal approach. Differences in defining the scope and powers of adult protection legislation in the UK and internationally are highlighted. Research limitations/implications – This review was undertaken in late 2013; while the authors have updated the mapping to take account of subsequent changes, some statutory guidance is not yet available. While the expertise of a group of experienced professionals in the field of adult safeguarding was utilized, it was not feasible to employ a formal survey or consensus model. Practical implications – Some countries have already introduced APL and others are considering doing so. The potential advantages and challenges of introducing APL are highlighted. Social implications – The introduction of legislation may give professionals increased powers to prevent and reduce abuse of adults, but this would also change the dynamic of relationships within families and between families and professionals. Originality/value – This paper provides an accessible discussion of APL across the UK and internationally which to date has been lacking from the literature. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
22. Development of an Industry Foundation Classes Assembly Viewer.
- Author
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Owolabi, Abidemi, Anumba, Chimay J., El-Hamalawi, Ashraf, and Harper, Colin
- Subjects
COMPUTER software ,PROGRAMMING languages ,CONSTRUCTION industry ,COMPUTER software industry ,INDUSTRIES - Abstract
The construction industry has invested considerable effort into integration of project information in the last decade. One such effort is the definition of Industry Foundation Classes (IFCs) to facilitate data sharing across applications through a shared project model. In order to achieve the integration objectives, the industry software vendors need to commit to the implementation of IFC in their products. IFC is defined in EXPRESS, which is a platform-independent, object-flavored, data modeling language. The EXPRESS-based models must be translated into some programming language model for specific implementation. To achieve this, developers need to evaluate and select a suitable model and programming language for their implementation. Developers therefore need to understand both EXPRESS and a host of programming languages. This initial knowledge requirement may hinder the take-off or adoption of IFC-based implementation. This paper describes a software solution that reduces this initial knowledge requirement considerably by providing a .NET class library translation and an implementation view of the IFC model, based on the EXPRESS definitions. Complemented by the online documentation provided with the IFC definitions, the software provides a hierarchical view of the IFC-based programming objects with drill-down facility for developers to capture and appreciate the information requirement for specific objects. [ABSTRACT FROM AUTHOR]
- Published
- 2006
- Full Text
- View/download PDF
23. Subthreshold Nanosecond Laser Intervention in Age-Related Macular Degeneration: The LEAD Randomized Controlled Clinical Trial.
- Author
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Guymer, Robyn H., Wu, Zhichao, Hodgson, Lauren A.B., Caruso, Emily, Brassington, Kate H., Tindill, Nicole, Aung, Khin Zaw, McGuinness, Myra B., Fletcher, Erica L., Chen, Fred K., Chakravarthy, Usha, Arnold, Jennifer J., Heriot, Wilson J., Durkin, Shane R., Lek, Jia Jia, Harper, Colin A., Wickremasinghe, Sanjeewa S., Sandhu, Sukhpal S., Baglin, Elizabeth K., and Sharangan, Pyrawy
- Subjects
- *
CLINICAL trials , *RETINAL degeneration , *LASERS , *THERAPEUTICS - Abstract
There is an urgent need for a more effective intervention to slow or prevent progression of age-related macular degeneration (AMD) from its early stages to vision-threatening late complications. Subthreshold nanosecond laser (SNL) treatment has shown promise in preclinical studies and a pilot study in intermediate AMD (iAMD) as a potential treatment. We aimed to evaluate the safety of SNL treatment in iAMD and its efficacy for slowing progression to late AMD. The Laser Intervention in Early Stages of Age-Related Macular Degeneration (LEAD) study is a 36-month, multicenter, randomized, sham-controlled trial. Two hundred ninety-two participants with bilateral large drusen and without OCT signs of atrophy. Participants were assigned randomly to receive Retinal Rejuvenation Therapy (2RT®; Ellex Pty Ltd, Adelaide, Australia) SNL or sham treatment to the study eye at 6-monthly intervals. The primary efficacy outcome was the time to development of late AMD defined by multimodal imaging (MMI). Safety was assessed by adverse events. Overall, progression to late AMD was not slowed significantly with SNL treatment compared with sham treatment (adjusted hazard ratio [HR], 0.61; 95% confidence interval [CI], 0.33–1.14; P = 0.122). However, a post hoc analysis showed evidence of effect modification based on the coexistence of reticular pseudodrusen (RPD; adjusted interaction P = 0.002), where progression was slowed for the 222 participants (76.0%) without coexistent RPD at baseline (adjusted HR, 0.23; 95% CI, 0.09–0.59; P = 0.002), whereas an increased progression rate (adjusted HR, 2.56; 95% CI, 0.80–8.18; P = 0.112) was observed for the 70 participants (24.0%) with RPD with SNL treatment. Differences between the groups in serious adverse events were not significant. In participants with iAMD without MMI-detected signs of late AMD, no significant difference in the overall progression rate to late AMD between those receiving SNL and sham treatment were observed. However, SNL treatment may have a role in slowing progression for those without coexistent RPD and may be inappropriate in those with RPD, warranting caution when considering treatment in clinical phenotypes with RPD. Our findings provide compelling evidence for further trials of the 2RT® laser, but they should not be extrapolated to other short-pulse lasers. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
24. Factors Promoting Success and Influencing Complications in Laser-Induced Central Vein Bypass
- Author
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McAllister, Ian L., Gillies, Mark E., Smithies, Lynne A., Rochtchina, Elena, Harper, Colin A., Daniell, Mark D., Constable, Ian J., and Mitchell, Paul
- Subjects
- *
SURGICAL anastomosis , *SURGICAL complications , *VEIN surgery , *RETINAL vein , *ARTERIAL occlusions , *COHORT analysis , *VISUAL acuity , *LASER surgery - Abstract
Purpose: To evaluate the factors influencing the successful creation of a laser-induced chorioretinal venous anastomosis (L-CRA) and those involved in the development of complications. Design: Interventional cohort study. Participants: Fifty-five patients with a nonischemic central retinal vein occlusion (CRVO) who were randomized to receive an L-CRA from the total of 108 who completed the follow-up period of the Central Vein Bypass Study. Methods: Patients who were randomized to L-CRA were followed up for an 18-month period. They were stratified in 2 sets of 2 cohorts: those who did or did not demonstrate an L-CRA and those who did or did not demonstrate neovascular complications at the site of the L-CRA. Subgroup analysis was performed to determine what factors influenced the creation of an L-CRA and the development of complications at each individual laser site. Main Outcome Measures: Identification of systemic and local ocular factors associated with increased success rates of L-CRA creation and those involved with an increased risk of neovascular complications. Results: Younger age (P = 0.03), better baseline visual acuity (P = 0.04), and the absence of hypertension (P = 0.001) were systemic features associated with an increased chance of demonstrating a successful L-CRA at each site, whereas sex and duration of the CRVO were not. The position of the L-CRA site did not influence the outcome; however, evidence of rupture of the vein wall at the time of the attempt was associated with a higher chance of success (P = 0.008). Increased risk of neovascularization, which occurred at 12 sites in 10 eyes, was associated with higher central venous pressure before treatment (P = 0.03), prolonged fluorescein transit time (P = 0.0001), and the presence of some capillary nonperfusion (P = 0.01). Conclusions: Younger age, better baseline visual acuity, and the absence of hypertension were associated with an improved success rate, as was evidence of rupture of the vein wall. High baseline central venous pressure, prolonged fluorescein transit time, and the presence of any retinal ischemia were associated with a higher incidence of neovascular complications. Financial Disclosure(s): Proprietary or commercial disclosure may be found after the references. [Copyright &y& Elsevier]
- Published
- 2012
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25. Information Privacy in Healthcare - The Vital Role of Informed Consent.
- Author
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McClelland R and Harper CM
- Subjects
- Humans, Disclosure, Delivery of Health Care, Privacy, Informed Consent
- Abstract
The use and disclosure of patient information is subject to multiple legal and ethical obligations. Within European human rights law the differences relating to consent are reflected in the separate requirements of data protection law, the common law, and professional ethics. The GDPR requires explicit consent. This contrasts with the ethical and common law availability of reliance on implied consent for the use of patient information for that patient's care and treatment. For any proposed use of patient information for healthcare purposes other than direct care, even where GDPR may be satisfied if the patient refuses to consent to disclosure, the information should not normally be disclosed. For any proposed use or disclosure outside healthcare the justification should normally be consent. However, consent is often not possible or appropriate and an overriding public interest can be relied upon to justify the use or disclosure, both legally and ethically.
- Published
- 2022
- Full Text
- View/download PDF
26. Subthreshold Nanosecond Laser in Age-Related Macular Degeneration: Observational Extension Study of the LEAD Clinical Trial.
- Author
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Guymer RH, Chen FK, Hodgson LAB, Caruso E, Harper CA, Wickremashinghe SS, Cohn AC, Sivarajah P, Tindill N, Luu CD, and Wu Z
- Subjects
- Aged, Disease Progression, Female, Fundus Oculi, Humans, Macular Degeneration complications, Macular Degeneration diagnosis, Male, Retinal Drusen diagnosis, Retinal Drusen etiology, Risk Factors, Treatment Outcome, Fluorescein Angiography methods, Laser Therapy methods, Macular Degeneration surgery, Multimodal Imaging methods, Retinal Drusen surgery
- Abstract
Purpose: To evaluate the long-term effect of subthreshold nanosecond laser (SNL) treatment on progression to late age-related macular degeneration (AMD)., Design: Observational extension study of a randomized, sham-controlled trial., Participants: Two hundred twelve participants with bilateral large drusen., Methods: The Laser Intervention in the Early Stages of AMD (LEAD) study was a 36-month trial where participants were randomized to receive SNL or sham treatment in 1 eye at 6-monthly intervals up to 30 months. After the completion of the LEAD study, the 2 largest recruiting sites offered remaining participants an opportunity to enroll in a 24-month observational extension study. This study thus examined all participants from these 2 sites who were enrolled in the LEAD study at baseline, including the additional observational data., Main Outcome Measures: Time to develop late AMD, defined on multimodal imaging, between those randomized the SNL or sham treatment., Results: Overall, no significant difference was found in the rate of progression over a 60-month period in those randomized to the SNL compared with the sham group (adjusted hazard ratio [HR], 0.63; 95% confidence interval [CI], 0.36-1.09; P = 0.098), similar to the findings at 36 months in the LEAD Study. However, evidence of treatment effect modification continued to emerge based on the coexistence of reticular pseudodrusen (RPD; P = 0.007, adjusted interaction). Namely, progression was slowed significantly with SNL treatment for those without coexistent RPD (adjusted HR, 0.34; 95% CI, 0.16-0.71; P = 0.004), but it was not significantly different for those with RPD (adjusted HR, 1.81; 95% CI, 0.67-4.88; P = 0.239)., Conclusions: A 24-month observational extension study to the LEAD Study confirmed that SNL treatment did not significantly reduce the overall rate of progression to late AMD in a cohort with intermediate AMD. However, the persistence of a potential beneficial treatment effect in those without coexistent RPD over a longer follow-up duration of an additional 24 months without additional treatment is encouraging. These findings provide further justification for future trials to examine the potential value of SNL treatment for slowing progression in intermediate AMD., (Copyright © 2021 American Academy of Ophthalmology. Published by Elsevier Inc. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
27. Longitudinal analysis of low-molecular weight fluorophores in type 1 diabetes mellitus.
- Author
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Januszewski AS, Thomas MC, Karschimkus CS, Chung JS, Rowley KG, Nelson CL, O'Neal DN, Dragicevic G, Harper CA, Best JD, and Jenkins AJ
- Subjects
- Adult, Biomarkers blood, Diabetes Mellitus, Type 1 therapy, Diabetic Angiopathies diagnosis, Diabetic Angiopathies therapy, Diabetic Nephropathies diagnosis, Diabetic Nephropathies therapy, Female, Humans, Longitudinal Studies, Male, Middle Aged, Molecular Weight, Oxidative Stress, Spectrometry, Fluorescence, Staining and Labeling, Diabetes Mellitus, Type 1 diagnosis, Glycation End Products, Advanced blood
- Abstract
Objectives: Circulating low molecular weight (<10 kDa) fluorophores (LMW-F) measured by non-specific fluorescence spectroscopy may detect small advanced glycation end-products (AGEs) not recognized by other assays. This longitudinal study assessed correlates of LMW-F and predictive power of LMW-F levels for vascular health in Type 1 diabetes (T1DM) patients., Methods: Fasting patients with T1DM (n=37) were studied twice at intervals of 12-60 months (mean+/-SD, 33+/-15 months). LMW-F levels were also measured once in 112 healthy control subjects., Results: Relative to controls, LMW-F levels were higher in diabetic subjects at initial and final time points (mean+/-SD), 5.4+/-1.9 AU/ml and 4.5+/-1.8 AU/ml respectively vs. 3.8+/-2.1 AU/ml; p=0.0001 and p=0.06). Baseline LMW-F levels predicted subsequent hs-CRP and oxLDL/LDL values. LMW-F levels decreased significantly over time in diabetes (5.4+/-1.9 vs. 4.5+/-1.8 AU/ml; p=0.02). Rises in LMW-F levels in individual diabetic subjects correlated significantly with worsening renal function (BUN), glycemia (HbA1c) and with vascular dysfunction (systemic vascular resistance)., Conclusions: LMW-F levels predict levels of inflammation and oxidation in T1DM. Changes in LMW-F levels in T1DM reflect variations in glycemia and renal function. Biochemical characterization of LMW-F would facilitate understanding of the potential utility of LMW-F as a therapeutic target.
- Published
- 2008
- Full Text
- View/download PDF
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