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Articles 1 - 30 of 35
Full-Text Articles in Medicine and Health Sciences
Aboriginal And Non—Aboriginal Australia: The Dilemma Of Apologies, Forgiveness, And Reconciliation, David Mellor, Di Bretherton, Lucy Firth
Aboriginal And Non—Aboriginal Australia: The Dilemma Of Apologies, Forgiveness, And Reconciliation, David Mellor, Di Bretherton, Lucy Firth
Aboriginal Policy Research Consortium International (APRCi)
This article presents a qualitative study of the indigenous Australian perspective on reconciliation with nonindigenous Australia, with a focus on the role of an apology for the oppression and violence perpetrated by nonindigenous Australians, and for- giveness on the part of indigenous Australians. A brief historical analysis of the rela- tionship between Aborigines and waves of settlers is presented to demonstrate the ex- tent of the wrong that was perpetrated against Aborigines and the need for social as well as practical reconciliation in the current context. It is argued that negotiated for- giveness is a concept that is pertinent to …
The Stem Cell Debate Continues: The Buying And Selling Of Eggs For Research, Françoise Baylis, Carolyn Mcleod
The Stem Cell Debate Continues: The Buying And Selling Of Eggs For Research, Françoise Baylis, Carolyn Mcleod
Philosophy Publications
Now that stem cell scientists are clamouring for human eggs for cloning-based stem cell research, there is vigorous debate about the ethics of paying women for their eggs. Generally speaking, some claim that women should be paid a fair wage for their reproductive labour or tissues, while others argue against the further commodification of reproductive labour or tissues and worry about voluntariness among potential egg providers. Siding mainly with those who believe that women should be financially compensated for providing eggs for research, the new stem cell guidelines of the International Society for Stem Cell Research (ISSCR) legitimise both reimbursement …
Adaptive Radiotherapy Planning On Decreasing Gross Tumor Volumes As Seen On Megavoltage Computed Tomography Images., Curtis Woodford, Slav Yartsev, R. Dar, Glenn Bauman, Jacob Van Dyk
Adaptive Radiotherapy Planning On Decreasing Gross Tumor Volumes As Seen On Megavoltage Computed Tomography Images., Curtis Woodford, Slav Yartsev, R. Dar, Glenn Bauman, Jacob Van Dyk
Oncology Publications
PURPOSE: To evaluate gross tumor volume (GTV) changes for patients with non-small-cell lung cancer by using daily megavoltage (MV) computed tomography (CT) studies acquired before each treatment fraction on helical tomotherapy and to relate the potential benefit of adaptive image-guided radiotherapy to changes in GTV.
METHODS AND MATERIALS: Seventeen patients were prescribed 30 fractions of radiotherapy on helical tomotherapy for non-small-cell lung cancer at London Regional Cancer Program from Dec 2005 to March 2007. The GTV was contoured on the daily MVCT studies of each patient. Adapted plans were created using merged MVCT-kilovoltage CT image sets to investigate the advantages …
Human Parietal "Reach Region" Primarily Encodes Intrinsic Visual Direction, Not Extrinsic Movement Direction, In A Visual Motor Dissociation Task., Juan Fernandez-Ruiz, Herbert C Goltz, Joseph F X Desouza, Tutis Vilis, J Douglas Crawford
Human Parietal "Reach Region" Primarily Encodes Intrinsic Visual Direction, Not Extrinsic Movement Direction, In A Visual Motor Dissociation Task., Juan Fernandez-Ruiz, Herbert C Goltz, Joseph F X Desouza, Tutis Vilis, J Douglas Crawford
Brain and Mind Institute Researchers' Publications
Posterior parietal cortex (PPC) participates in the planning of visuospatial behaviors, including reach movements, in gaze-centered coordinates. It is not known if these representations encode the visual goal in retinal coordinates, or the movement direction relative to gaze. Here, by dissociating the intrinsic retinal stimulus from the extrinsic direction of movement, we show that PPC employs a visual code. Using delayed pointing and event-related functional magnetic resonance imaging, we identified a cluster of PPC regions whose activity was topographically (contralaterally) related to the direction of the planned movement. We then switched the normal visual-motor spatial relationship by adapting subjects to …
Assessment In Crisis, Amresh Srivastava
Assessment In Crisis, Amresh Srivastava
Psychiatry Presentations
No abstract provided.
Posttraumatic Stress Disorder And Associated Risk Factors In Canadian Peacekeeping Veterans With Health-Related Disabilities, Don Richardson, James A. Naifeh, Jon D Elhai
Posttraumatic Stress Disorder And Associated Risk Factors In Canadian Peacekeeping Veterans With Health-Related Disabilities, Don Richardson, James A. Naifeh, Jon D Elhai
MacDonald Franklin OSI Research Centre
Objectives:
This study investigates posttraumatic stress disorder (PTSD) and its associated risk factors in a random, national, Canadian sample of United Nations peacekeeping veterans with service-related disabilities.
Methods:
Participants included 1016 male veterans (age < 65 years) who served in the Canadian Forces from 1990 to 1999 and were selected from a larger random sample of 1968 veterans who voluntarily and anonymously completed a general health survey conducted by Veterans Affairs Canada in 1999. Survey instruments included the PTSD Checklist-Military Version (PCL-M), Center for Epidemiological Studies-Depression Scale (CES-D), and questionnaires regarding life events during the past year, current stressors, sociodemographic characteristics, and military history.
Results:
We found that rates of probable PTSD (PCL-M score > 50) among veterans were 10.92% for veterans deployed once and 14.84% for those deployed more than once. The rates of probable clinical depression (CES-D score > 16) were 30.35% for veterans deployed once and 32.62% for those deployed more than once. We found that, in multivariate analyses, probable PTSD rates and PTSD severity were associated with younger …
Sustainable Antenatal Care Services In An Urban Indigenous Community: The Townsville Experience, Kathryn S. Panaretto, Melvina R. Mitchell, Lynette Anderson, Sarah L. Larkins, Vivienne Manessis, Petra G. Buettner, David Watson
Sustainable Antenatal Care Services In An Urban Indigenous Community: The Townsville Experience, Kathryn S. Panaretto, Melvina R. Mitchell, Lynette Anderson, Sarah L. Larkins, Vivienne Manessis, Petra G. Buettner, David Watson
Aboriginal Policy Research Consortium International (APRCi)
Objective: To evaluate the impact of a sustained, community-based collaborative approach to antenatal care services for Indigenous women.
Design: Prospective quality improvement intervention, the Mums and Babies program, in a cohort of women attending Townsville Aboriginal and Islanders Health Service, 1 January 2000 – 31 December 2005 (MB group), compared with a historical control group (PreMB group), 1 January 1998 – 30 June 1999.
Main outcome measures: Proportion of women having inadequate antenatal care and
screening; perinatal indicators. Results: Thenumberofantenatalvisitsperpregnancyincreasedfromthree
(interquartilerange[IQR],twotosix)inthePreMBgrouptosix(IQR,fourtoten)inthe MB group (P < 0.001). There were significant improvements in care planning, completion of cycle-of-care, and antenatal education activities throughout the study period. About 90% of all women attending for antenatal care were screened for sexually transmitted diseases, 89% had measurement of haemoglobin level, and serological tests for hepatitis B and syphilis (minimum antenatal screening). There was increased attendance for dating and morphology scans. In the MB group compared with the PreMB group, there was a significant reduction in perinatal mortality (14 v 60 per 1000 births; P=0.014). Conclusion: Sustained access to a community-based, integrated, shared antenatal service has improved perinatal outcomes among Indigenous women in Townsville.
Pp2cdelta (Ppm1d, Wip1), An Endogenous Inhibitor Of P38 Mapk, Is Regulated Along With Trp53 And Cdkn2a Following P38 Mapk Inhibition During Mouse Preimplantation Development., Jenny A Hickson, Barry Fong, Patricia H Watson, Andrew J Watson
Pp2cdelta (Ppm1d, Wip1), An Endogenous Inhibitor Of P38 Mapk, Is Regulated Along With Trp53 And Cdkn2a Following P38 Mapk Inhibition During Mouse Preimplantation Development., Jenny A Hickson, Barry Fong, Patricia H Watson, Andrew J Watson
Obstetrics & Gynaecology Publications
Preimplantation embryos utilize mitogen-activated protein kinase signaling (MAPK) pathways to relay signals from the external environment to prepare appropriate responses and adaptations to a changing milieu. It is therefore important to investigate how MAPK pathways are regulated during preimplantation development. This study was conducted to investigate whether PP2Cdelta (Ppm1d, WIP1) is expressed during mouse preimplantation development and to determine the influences of p38 MAPK inhibition on expression of Trp53 (p53), Ppm1d, (WIP1), and Cdkn2a (p16) during mouse preimplantation development. Our results indicate that Trp53, Ppm1d, and Cdkn2a mRNAs and TRP53 and PP2Cdelta proteins are expressed throughout mouse preimplantation development. Treatment …
Spontaneous Low-Frequency Fluctuations In The Bold Signal In Schizophrenic Patients: Anomalies In The Default Network, Robyn L Bluhm, Jodi Miller, Ruth A Lanius, Elizabeth A Osuch, Kristine Boksman, R W J Neufeld, Jean Theberge, Betsy Schaefer, Peter Williamson
Spontaneous Low-Frequency Fluctuations In The Bold Signal In Schizophrenic Patients: Anomalies In The Default Network, Robyn L Bluhm, Jodi Miller, Ruth A Lanius, Elizabeth A Osuch, Kristine Boksman, R W J Neufeld, Jean Theberge, Betsy Schaefer, Peter Williamson
Department of Medicine Publications
Spontaneous low-frequency fluctuations in the blood oxygen level-dependent (BOLD) functional magnetic resonance imaging (MRI) signal have been shown to reflect neural synchrony between brain regions. A "default network" of spontaneous low-frequency fluctuations has been described in healthy volunteers during stimulus-independent thought. Negatively correlated with this network are regions activated during attention-demanding tasks. Both these networks involve brain regions and functions that have been linked with schizophrenia in previous research. The present study examined spontaneous slow fluctuations in the BOLD signal at rest, as measured by correlation with low-frequency oscillations in the posterior cingulate, in 17 schizophrenic patients, and 17 comparable …
Early Psychosis: A Bridge To Future, Amresh Srivastava
Early Psychosis: A Bridge To Future, Amresh Srivastava
Psychiatry Presentations
No abstract provided.
Alcohol Slows Interhemispheric Transmission, Increases The Flash-Lag Effect, And Prolongs Masking: Evidence For A Slowing Of Neural Processing And Transmission., Sarah A Khan, Brian Timney
Alcohol Slows Interhemispheric Transmission, Increases The Flash-Lag Effect, And Prolongs Masking: Evidence For A Slowing Of Neural Processing And Transmission., Sarah A Khan, Brian Timney
Brain and Mind Institute Researchers' Publications
While the alcohol literature is extensive, relatively little addresses the relationship between physiological effects and behavioural changes. Using the visual system as a model, we examined alcohol's influence on neural temporal processing as a potential means for alcohol's effects. We did this by using tasks that provided a measure of processing speed: Poffenberger paradigm, flash-lag, and backward masking. After moderate alcohol, participants showed longer interhemispheric transmission times, larger flash-lags, and prolonged masking. Our data are consistent with the view that alcohol slows neural processing, and provide support for a reduction in processing efficiency underlying alcohol-induced changes in temporal visual processing.
Oligomerization Of Benm, A Lysr-Type Transcriptional Regulator: Structural Basis For The Aggregation Of Proteins In This Family., Obidimma Ezezika, Sandra Haddad, Ellen L Neidle, Cory Momany
Oligomerization Of Benm, A Lysr-Type Transcriptional Regulator: Structural Basis For The Aggregation Of Proteins In This Family., Obidimma Ezezika, Sandra Haddad, Ellen L Neidle, Cory Momany
Health Studies Publications
LysR-type transcriptional regulators comprise the largest family of homologous regulatory DNA-binding proteins in bacteria. A problematic challenge in the crystallization of LysR-type regulators stems from the insolubility and precipitation difficulties encountered with high concentrations of the full-length versions of these proteins. A general oligomerization scheme is proposed for this protein family based on the structures of the effector-binding domain of BenM in two different space groups, P4(3)22 and C222(1). These structures used the same oligomerization scheme of dimer-dimer interactions as another LysR-type regulator, CbnR, the full-length structure of which is available [Muraoka et al. (2003), J. Mol. Biol. 328, 555-566]. …
Na/K-Atpase Beta1 Subunit Expression Is Required For Blastocyst Formation And Normal Assembly Of Trophectoderm Tight Junction-Associated Proteins., Pavneesh Madan, Keeley Rose, Andrew J Watson
Na/K-Atpase Beta1 Subunit Expression Is Required For Blastocyst Formation And Normal Assembly Of Trophectoderm Tight Junction-Associated Proteins., Pavneesh Madan, Keeley Rose, Andrew J Watson
Obstetrics & Gynaecology Publications
Na/K-ATPase plays an important role in mediating blastocyst formation. Despite the expression of multiple Na/K-ATPase alpha and beta isoforms during mouse preimplantation development, only the alpha1 and beta1 isoforms have been localized to the basolateral membrane regions of the trophectoderm. The aim of the present study was to selectively down-regulate the Na/K-ATPase beta1 subunit employing microinjection of mouse 1 cell zygotes with small interfering RNA (siRNA) oligos. Experiments comprised of non-injected controls and two groups microinjected with either Stealthtrade mark Na/K-ATPase beta1 subunit oligos or nonspecific Stealthtrade mark siRNA as control. Development to the 2-, 4-, 8-, and 16-cell and …
Relevance To Self: A Brief Review And Framework Of Neural Systems Underlying Appraisal, Taylor W. Schmitz, Sterling C. Johnson
Relevance To Self: A Brief Review And Framework Of Neural Systems Underlying Appraisal, Taylor W. Schmitz, Sterling C. Johnson
Brain and Mind Institute Researchers' Publications
We argue that many similar findings observed in cognitive, affective, and social neuroimaging research may compose larger processes central to generating self-relevance. In support of this, recent findings from these research domains were reviewed to identify common systemic activation patterns. Superimposition of these patterns revealed evidence for large-scale supramodal processes, which are argued to mediate appraisal of self-relevant content irrespective of specific stimulus types (e.g. words, pictures) and task domains (e.g. induction of reward, fear, pain, etc.). Furthermore, we distinguish between two top-down sub-systems involved in appraisal of self-relevance, one that orients pre-attentive biasing information (e.g. anticipatory or mnemonic) to …
The Expression Of Ovine Placental Lactogen, Star And Progesterone-Associated Steroidogenic Enzymes In Placentae Of Overnourished Growing Adolescent Ewes., Richard G Lea, Peter Wooding, Ian Stewart, Lisa T Hannah, Stephen Morton, Karen Wallace, Raymond P Aitken, John S Milne, Timothy Regnault, Russell V Anthony, Jacqueline M Wallace
The Expression Of Ovine Placental Lactogen, Star And Progesterone-Associated Steroidogenic Enzymes In Placentae Of Overnourished Growing Adolescent Ewes., Richard G Lea, Peter Wooding, Ian Stewart, Lisa T Hannah, Stephen Morton, Karen Wallace, Raymond P Aitken, John S Milne, Timothy Regnault, Russell V Anthony, Jacqueline M Wallace
Paediatrics Publications
Overnourishing pregnant adolescent sheep promotes maternal growth but reduces placental mass, lamb birth weight and circulating progesterone. This study aimed to determine whether altered progesterone reflected transcript abundance for StAR (cholesterol transporter) and the steroidogenic enzymes (Cyp11A1, Hsd3b and Cyp17). Circulating and placental expression of ovine placental lactogen (oPL) was also investigated. Adolescent ewes with singleton pregnancies were fed high (H) or moderate (M) nutrient intake diets to restrict or support placental growth. Experiment 1: peripheral progesterone and oPL concentrations were measured in H (n=7) and M (n=6) animals across gestation (days 7-140). Experiment 2: progesterone was measured to mid- …
Perceptual Functions Of Perirhinal Cortex In Rats: Zero-Delay Object Recognition And Simultaneous Oddity Discriminations., Susan J Bartko, Boyer D Winters, Rosemary A Cowell, Lisa M Saksida, Timothy J Bussey
Perceptual Functions Of Perirhinal Cortex In Rats: Zero-Delay Object Recognition And Simultaneous Oddity Discriminations., Susan J Bartko, Boyer D Winters, Rosemary A Cowell, Lisa M Saksida, Timothy J Bussey
Brain and Mind Institute Researchers' Publications
The perirhinal cortex (PRh) is widely accepted as having an important role in object recognition memory in humans and animals. Contrary to claims that PRh mediates declarative memory exclusively, previous evidence suggests that PRh has a role in the perceptual processing of complex objects. In the present study, we conducted an examination of the possible role of PRh in perceptual function in rats. We examined whether bilateral excitotoxic lesions of PRh or PPRh (perirhinal plus postrhinal cortices) in the rat would cause deficits in a zero-delay object-recognition task and a simultaneous oddity discrimination task. Both of these tasks measured spontaneous …
Oocyte Cytoplasmic Maturation: A Key Mediator Of Oocyte And Embryo Developmental Competence., A J Watson
Oocyte Cytoplasmic Maturation: A Key Mediator Of Oocyte And Embryo Developmental Competence., A J Watson
Obstetrics & Gynaecology Publications
Efforts have intensified to successfully mature and inseminate oocytes in vitro and then culture ensuing embryos to transferable stages from a large number of mammalian species. Success varies, but generally even for the most successful species it is only possible to obtain a maximum of a 40 to 50% development of zygotes to the blastocyst stage. Reduced oocyte developmental competence is suggested as a primary reason for the reduced potential of in vitro-produced embryos. The vast majority of in vitro-matured oocytes are meiotically competent; however, many do not attain an optimal oocyte diameter before insemination. Variations in oocyte in vitro …
Social Determinants Of Health And Disease Working Together, Amresh Srivastava
Social Determinants Of Health And Disease Working Together, Amresh Srivastava
Psychiatry Presentations
No abstract provided.
Schizophrenia: General Findings And Current Status, Amresh Srivastava
Schizophrenia: General Findings And Current Status, Amresh Srivastava
Psychiatry Presentations
No abstract provided.
Catatonia Yesterday, Today, Tomorrow, Amresh Srivastava
Catatonia Yesterday, Today, Tomorrow, Amresh Srivastava
Psychiatry Presentations
No abstract provided.
Anosognosia In Mild Cognitive Impairment: Relationship To Activation Of Cortical Midline Structures Involved In Self-Appraisal, Michele L. Ries, Britta M. Jabbar, Taylor W. Schmitz, Mehul A. Trivedi, Carey E. Gleason, Cynthia M. Carlsson, Howard A. Rowley, Sanjay Asthana, Sterling C. Johnson
Anosognosia In Mild Cognitive Impairment: Relationship To Activation Of Cortical Midline Structures Involved In Self-Appraisal, Michele L. Ries, Britta M. Jabbar, Taylor W. Schmitz, Mehul A. Trivedi, Carey E. Gleason, Cynthia M. Carlsson, Howard A. Rowley, Sanjay Asthana, Sterling C. Johnson
Brain and Mind Institute Researchers' Publications
Awareness of cognitive dysfunction shown by individuals with Mild Cognitive Impairment (MCI), a condition conferring risk for Alzheimer's disease (AD), is variable. Anosognosia, or unawareness of loss of function, is beginning to be recognized as an important clinical symptom of MCI. However, little is known about the brain substrates underlying this symptom. We hypothesized that MCI participants' activation of cortical midline structures (CMS) during self-appraisal would covary with level of insight into cognitive difficulties (indexed by a discrepancy score between patient and informant ratings of cognitive decline in each MCI participant). To address this hypothesis, we first compared 16 MCI …
Post-Operative Extended Volume External Beam Radiation Therapy Is Safe For High Risk Esophageal Cancer Patients, Edward Yu, Patricia Tai, Jawaid Younus, Richard Malthaner, Larry Stitt, Pauline Truong, George Rodrigues, Robert Ash, Rashid Dar, Anna Tomiak, Mark Vincent, Walter Kocha, Brian Dingle, Richard Inculet
Post-Operative Extended Volume External Beam Radiation Therapy Is Safe For High Risk Esophageal Cancer Patients, Edward Yu, Patricia Tai, Jawaid Younus, Richard Malthaner, Larry Stitt, Pauline Truong, George Rodrigues, Robert Ash, Rashid Dar, Anna Tomiak, Mark Vincent, Walter Kocha, Brian Dingle, Richard Inculet
Oncology Presentations
Post-operative radiation therapy (RT) (1) and post-operative chemoradiation (2) have been used for esophageal cancer patients deemed high risk for recurrence after esophagectomy.
Defining opitmal RT target volume after esophagectomy is difficult due to significant changes in patient anatomy and function.
Some radiationon cologists advocated the inclusion of the anastomotic site within the irradiation volume due to concerns for potential increased relapse risk, while others did not subscribe to this practice due to concerns for increased treatment related toxicity.
We have previously reported patient outcome benefit using extended volume RT In management with high risk esophageal cancer patients underwent esopagectomy(3). …
Cognition As An Outcome Measure In Schizophrenia, Amresh Srivastava
Cognition As An Outcome Measure In Schizophrenia, Amresh Srivastava
Psychiatry Presentations
No abstract provided.
Atypical Antipsychotics And Cognitive Enhancement In Schizophrenia: The Current Status, Amresh Srivastava
Atypical Antipsychotics And Cognitive Enhancement In Schizophrenia: The Current Status, Amresh Srivastava
Psychiatry Presentations
No abstract provided.
Cholecystectomy Deferral In Patients With Endoscopic Sphincterotomy, Vivian Mcalister, Eric Davenport, Elizabeth Renouf
Cholecystectomy Deferral In Patients With Endoscopic Sphincterotomy, Vivian Mcalister, Eric Davenport, Elizabeth Renouf
Surgery Publications
BACKGROUND: Cholecystectomy is not required in up to 64% of patients who adopt a wait-and-see policy after endoscopic clearance of common bile duct stones. Although reports of retrospective cohort series have shown a higher mortality among patients who defer cholecystectomy, it is not known if this is due to the patients' premorbid health status or due to the deferral of cholecystectomy. Randomised clinical trials of prophylactic cholecystectomy versus wait-and-see have not had sufficient power to demonstrate differences in survival.
OBJECTIVES: To evaluate the beneficial and harmful effects of cholecystectomy deferral (wait-and-see) versus elective (prophylactic) cholecystectomy in patients who have had …
Learning From The Grandmothers: Incorporating Indigenous Principles Into Qualitative Research, Charlotte Loppie
Learning From The Grandmothers: Incorporating Indigenous Principles Into Qualitative Research, Charlotte Loppie
Aboriginal Policy Research Consortium International (APRCi)
In this article, the author describes the process she undertook to incorporate Indigenous principles into her doctoral research about the midlife health experiences of elder Aboriginal women in Nova Scotia, Canada. By employing qual- itative methods within the context of an Indigenous worldview, she gained knowledge of and developed competence in Aboriginal health research. The emergent partnership among Aboriginal community research facilitators, participating Mi’kmaq women, and the researcher provided many opportunities for the researcher to incorporate the paradigmatic and methodological traditions of Western science and Indigenous cultures. The application of these principles to this study might provide a useful example …
Social Support And Thriving Health: A New Approach To Understanding The Health Of Indigenous Canadians, Chantelle A.M. Richmond, Nancy A. Ross, Grace E. Egeland
Social Support And Thriving Health: A New Approach To Understanding The Health Of Indigenous Canadians, Chantelle A.M. Richmond, Nancy A. Ross, Grace E. Egeland
Aboriginal Policy Research Consortium International (APRCi)
Objectives. We examined the importance of social support in promoting thriv- ing health among indigenous Canadians, a disadvantaged population.
Methods. We categorized the self-reported health status of 31 625 adult indig- enous Canadians as thriving (excellent, very good) or nonthriving (good, fair, poor). We measured social support with indices of positive interaction, emotional support, tangible support, and affection and intimacy. We used multivariable lo- gistic regression analyses to estimate odds of reporting thriving health, using social support as the key independent variable, and we controlled for educational attainment and labor force status.
Results. Compared with women reporting low levels of …
For Dignity Or Money: Feminists On The Commodification Of Women’S Reproductive Labour, Carolyn Mcleod
For Dignity Or Money: Feminists On The Commodification Of Women’S Reproductive Labour, Carolyn Mcleod
Philosophy Publications
No abstract provided.
Uwomj Volume 76, No. 1, Western University
Uwomj Volume 76, No. 1, Western University
University of Western Ontario Medical Journal
Schulich School of Medicine & Dentistry
Esophageal Cancer, Edward Yu