Linda K. Byrne
Deakin University
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Featured researches published by Linda K. Byrne.
Australian Social Work | 2000
Linda K. Byrne; J. Hearle; Karen Plant; Jo Barkla; L. Jenner; John J. McGrath
Abstract Parents with a history of serious mental illness are vulnerable in many ways and are therefore likely to be accessing services from a range of government and community agencies. The use of multiple services, sometimes with conflicting practice frameworks, can result in sub-optimal management of these families. This study surveyed 77 service providers from a range of government and non-government agencies targeting their views regarding parents with a serious mental illness (specified in this study as schizophrenia, bipolar disorder and psychotic depression). They were asked what they perceived were difficulties for this population, interventions required to meet the needs of this group and finally, barriers to effective service delivery. We found that service providers reported that current services were inadequate for these parents. Parent-based interventions were seen as being more beneficial than those targeting children. Lack of liaison between agencies and lack of coordinated service provision were seen as the greatest barrier to effective service delivery. The results highlight the need for policy planners and service providers to develop strategies to ensure effective coordination between services that work with this population.
Nutrients | 2014
Karla A. Lomagno; Feifei Hu; Lynn Riddell; Alison O. Booth; Ewa A. Szymlek-Gay; Caryl Nowson; Linda K. Byrne
Iron and zinc are essential minerals often present in similar food sources. In addition to the adverse effects of frank iron and zinc-deficient states, iron insufficiency has been associated with impairments in mood and cognition. This paper reviews current literature on iron or zinc supplementation and its impact on mood or cognition in pre-menopausal women. Searches included MEDLINE complete, Excerpta Medica Database (EMBASE), psychINFO, psychARTICLES, pubMED, ProQuest Health and Medical Complete Academic Search complete, Scopus and ScienceDirect. Ten randomized controlled trials and one non-randomized controlled trial were found to meet the inclusion criteria. Seven studies found improvements in aspects of mood and cognition after iron supplementation. Iron supplementation appeared to improve memory and intellectual ability in participants aged between 12 and 55 years in seven studies, regardless of whether the participant was initially iron insufficient or iron-deficient with anaemia. The review also found three controlled studies providing evidence to suggest a role for zinc supplementation as a treatment for depressive symptoms, as both an adjunct to traditional antidepressant therapy for individuals with a diagnosis of major depressive disorder and as a therapy in its own right in pre-menopausal women with zinc deficiency. Overall, the current literature indicates a positive effect of improving zinc status on enhanced cognitive and emotional functioning. However, further study involving well-designed randomized controlled trials is needed to identify the impact of improving iron and zinc status on mood and cognition.
Psychiatry Research-neuroimaging | 2014
Alex Mealey; Gavin Abbott; Linda K. Byrne; Jane McGillivray
Autism spectrum and schizophrenia spectrum disorders are classified separately in the DSM-5, yet research indicates that these two disorders share overlapping features. The aim of the present study was to examine the overlap between autistic and schizotypal personality traits and whether anxiety and depression act as confounding variables in this relationship within a non-clinical population. One hundred and forty-four adults completed the Autism Spectrum Quotient and the Schizotypal Personality Questionnaire and the Depression Anxiety Stress Scales-21. A number of associations were seen between autistic and schizotypal personality traits. However, negative traits were the only schizotypal feature to uniquely predict global autistic traits, thus highlighting the importance of interpersonal qualities in the overlap of autistic and schizotypal characteristics. The inclusion of anxiety and depression did not alter relationships between autistic and schizotypal traits, indicating that anxiety and depression are not confounders of this relationship. These findings have important implications for the conceptualisation of both disorders.
Behavioural Brain Research | 2016
Yesul Kim; Brooke Morath; Chunling Hu; Linda K. Byrne; Shari L. Sutor; Mark A. Frye; Susannah J. Tye
High frequency deep brain stimulation (DBS) of the lateral habenula (LHb) reduces symptoms of depression in severely treatment-resistant individuals. Despite the observed therapeutic effects, the molecular underpinnings of DBS are poorly understood. This study investigated the efficacy of high frequency LHb DBS (130Hz; 200μA; 90μs) in an animal model of tricyclic antidepressant resistance. Further, we reported DBS mediated changes in Ca(2+)/calmodulin-dependent protein kinase (CaMKIIα/β), glycogen synthase kinase 3 (GSK3α/β) and AMP-activated protein kinase (AMPK) both locally and in the infralimbic cortex (IL). Protein expressions were then correlated to immobility time during the forced swim test (FST). Antidepressant actions were quantified via FST. Treatment groups comprised of animals treated with adrenocorticotropic hormone alone (ACTH; 100μg/day, 14days, n=7), ACTH with active DBS (n=7), sham DBS (n=8), surgery only (n=8) or control (n=8). Active DBS significantly reduced immobility in ACTH-treated animals (p<0.05). For this group, western blot results demonstrated phosphorylation status of LHb CaMKIIα/β and GSK3α/β significantly correlated to immobility time in the FST. Concurrently, we observed phosphorylation status of CaMKIIα/β, GSK3α/β, and AMPK in the IL to be negatively correlated with antidepressant actions of DBS. These findings suggest that activity dependent phosphorylation of CaMKIIα/β, and GSK3α/β in the LHb together with the downregulation of CaMKIIα/β, GSK3α/β, and AMPK in the IL, contribute to the antidepressant actions of DBS.
Psychiatry Research-neuroimaging | 2012
Gavin Abbott; Linda K. Byrne
One hundred and thirty-nine university students completed measures of schizotypy and subjective well-being (SWB). Inverse associations were found between schizotypy and SWB scores. These results provide evidence that diminished SWB is characteristic along the schizophrenia continuum. Further research is required to determine the mechanisms by which schizotypal individuals experience reduced life satisfaction.
Archives of Womens Mental Health | 2000
J. Barkla; Linda K. Byrne; J. Hearle; Karen Plant; L. Jenner; John J. McGrath
Summary Clinical experience and past research suggest that women with psychotic disorders have special needs when it comes to the provision of family planning and obstetric care. The aim of this study was to examine variables related to these issues in a representative sample of women with psychotic disorders who were in contact with mental health services. Of the 110 women who completed the survey, 65 (59.1%) were mothers. These women had a total of 257 pregnancies and 198 live births. One hundred and thirty-four (52%) of the pregnancies were unplanned and twenty-five percent of these pregnancies ended in termination. This population suffers from a high rate of unwanted pregnancies and reproductive losses. Further research is needed to assess the pre- and peri-conceptual needs of these women in order to optimize outcomes for the mothers and their foetuses.
Neuroscience & Biobehavioral Reviews | 2017
David R. Skvarc; Olivia M. Dean; Linda K. Byrne; Laura J. Gray; Stephen Lane; Matthew Lewis; Brisa Simoes Fernandes; Michael Berk; Andrew Marriott
HighlightsOxidation and neuroinflammation modulate cognition through a variety of vectors.NAC mitigates the cognitive effects of neuroinflammation in animals.Evidence that NAC can modulate human cognition is promising but inconsistent.Combined antioxidants are effective, but the specific contribution of NAC is unknown.Further exploration of NAC’s ability to modify cognitive change is warranted. Abstract Oxidative stress, neuroinflammation and neurogenesis are commonly implicated as cognitive modulators across a range of disorders. N‐acetylcysteine (NAC) is a glutathione precursor with potent antioxidant, pro‐neurogenesis and anti‐inflammatory properties and a favourable safety profile. A systematic review of the literature specifically examining the effect of NAC administration on human cognition revealed twelve suitable articles for inclusion: four examining Alzheimers disease; three examining healthy participants; two examining physical trauma; one examining bipolar disorder, one examining schizophrenia, and one examining ketamine‐induced psychosis. Heterogeneity of studies, insufficiently powered studies, infrequency of cognition as a primary outcome, heterogeneous methodologies, formulations, co‐administered treatments, administration regimes, and assessment confounded the drawing of firm conclusions. The available data suggested statistically significant cognitive improvements following NAC treatment, though the paucity of NAC‐specific research makes it difficult to determine if this effect is meaningful. While NAC may have a positive cognitive effect in a variety of contexts; larger, targeted studies are warranted, specifically evaluating its role in other clinical disorders with cognitive sequelae resulting from oxidative stress and neuroinflammation.
Jmir mhealth and uhealth | 2015
Davina Mann; Lynn Riddell; Karen Lim; Linda K. Byrne; Caryl Nowson; Manuela Rigo; Ewa A. Szymlek-Gay; Alison O. Booth
Background Low iron intake can lead to iron deficiency, which can result in impaired health and iron-deficiency anemia. A mobile phone app, combining successful dietary strategies to increase bioavailable iron with strategies for behavior change, such as goal setting, monitoring, feedback, and resources for knowledge acquisition, was developed with the aim to increase bioavailable iron intake in premenopausal women. Objective To evaluate the content, usability, and acceptability of a mobile phone app designed to improve intake of bioavailable dietary iron. Methods Women aged 18-50 years with an Android mobile phone were invited to participate. Over a 2-week period women were asked to interact with the app. Following this period, semistructured focus groups with participants were conducted. Focus groups were audio recorded and analyzed via an inductive open-coding method using the qualitative analysis software NVivo 10. Themes were identified and frequency of code occurrence was calculated. Results Four focus groups (n=26) were conducted (age range 19-36 years, mean 24.7, SD 5.2). Two themes about the app’s functionality were identified (frequency of occurrence in brackets): interface and design (134) and usability (86). Four themes about the app’s components were identified: goal tracker (121), facts (78), photo diary (40), and games (46). A number of suggestions to improve the interface and design of the app were provided and will inform the ongoing development of the app. Conclusions This research indicates that participants are interested in iron and their health and are willing to use an app utilizing behavior change strategies to increase intake of bioavailable iron. The inclusion of information about the link between diet and health, monitoring and tracking of the achievement of dietary goals, and weekly reviews of goals were also seen as valuable components of the app and should be considered in mobile health apps aimed at adult women.
The Australian e-journal for the advancement of mental health | 2002
Karen Plant; Linda K. Byrne; J. Barkla; Duncan McLean; J. Hearle; John J. McGrath
Abstract The aims of this study were to examine the utility of various self-report instruments related to family functioning in families where a parent has a psychotic disorder, and to explore associations between these instruments and symptoms in the parent. Twenty-one parents with a psychotic disorders participated in the study. All participants were able to complete the questionnaires and the majority of parents reported levels of parental competence in the average range. Most parents (90%) perceived themselves to be effective parents, however 30% reported low levels of satisfaction with the parenting role. There were significant associations between objective measures of negative symptoms and self-report scores related to problems in ways of coping, and problems with parent-child interactions. Many individuals with psychosis were able to report areas of perceived need related to their role as parents and to the functioning of their families, however there are several limitations in the use of these instruments in this setting.
Shanghai archives of psychiatry | 2015
Linda K. Byrne; Lingyi Pan; Marita P. McCabe; David Mellor; Yifeng Xu
Background Programs to remediate cognitive deficits have shown promising results in schizophrenia, but remediation of social cognition deficits is less well understood. Social cognitive deficits may cause more disability than the widely recognized neurocognitive deficits, suggesting that this is an area worthy of further investigation. Aim Implement and evaluate a brief computerized cognitive remediation program designed to improve memory, attention, and facial affect recognition (FAR) in outpatients with chronic schizophrenia. Methods Baseline assessments of FAR and of clinical, cognitive, and psychosocial functioning were completed on 20 males with schizophrenia enrolled in an outpatient rehabilitation program at the Shanghai Mental Health Center (the intervention group) and on 20 males with schizophrenia recruited from among regular outpatients at the Center (the control group). Both groups received treatment as usual, but the intervention group also completed an average of 12.7 sessions of a computer-based remediation program for neurocognitive, social, and FAR functioning over a 6-week period. The baseline measures were repeated in both groups at the end of the 6-week trial. Results There were no statistically significant differences in the changes in clinical symptoms (assessed by the Positive and Negative Syndrome Scale, PANSS) or cognitive measures (assessed using the Hong Kong List Learning Test and the Letter-Number Sequencing Task) between the intervention and control groups over the 6-week trial, but there were modest improvements on the PANSS for the intervention group between baseline and after the intervention. There was a significantly greater improvement in the social functioning measure (the Personal and Social Performance scale, PSP) in the intervention group than in the control group. The pre-post change in the total facial recognition score in the intervention group was statistically significant (paired t-test=-2.60, p=0.018), and there was a statistical trend of a greater improvement in facial recognition in the intervention group than in the control group (F(1,37)=2.93; p=0.092). Conclusion Integration of FAR training with a short, computer-administrated cognitive remediation program may improve recognition of facial emotions by individuals with schizophrenia, and, thus, improve their social functioning. But more work on developing the FAR training modules and on testing them in larger, more diverse samples will be needed before this can be recommended as a standard part of cognitive remediation programs.