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1.
BMC Health Serv Res ; 21(1): 301, 2021 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-33794883

RESUMO

BACKGROUND: Effective person-centred interventions are needed to support people living with mental-physical multimorbidity to achieve better health and wellbeing outcomes. Depression is identified as the most common mental health condition co-occurring with a physical health condition and is the focus of this intervention development study. The aim of this study is to identify the key components needed for an effective intervention based on a clear theoretical foundation, consideration of how motivational interviewing can inform the intervention, clinical guidelines to date, and the insights of primary care nurses. METHODS: A multimethod approach to intervention development involving review and integration of the theoretical principles of Theory of Planned Behavior and the patient-centred clinical skills of motivational interviewing, review of the expert consensus clinical guidelines for multimorbidity, and incorporation of a thematic analysis of group interviews with Australian nurses about their perspectives of what is needed in intervention to support people living with mental-physical multimorbidity. RESULTS: Three mechanisms emerged from the review of theory, guidelines and practitioner perspective; the intervention needs to actively 'engage' patients through the development of a collaborative and empathic relationship, 'focus' on the patient's priorities, and 'empower' people to make behaviour change. CONCLUSION: The outcome of the present study is a fully described primary care intervention for people living with mental-physical multimorbidity, with a particular focus on people living with depression and a physical health condition. It builds on theory, expert consensus guidelines and clinician perspective, and is to be tested in a clinical trial.


Assuntos
Transtornos Mentais , Entrevista Motivacional , Austrália/epidemiologia , Humanos , Transtornos Mentais/epidemiologia , Transtornos Mentais/terapia , Multimorbidade , Atenção Primária à Saúde
2.
Aust N Z J Psychiatry ; 54(4): 367-381, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-31957463

RESUMO

BACKGROUND: In light of emerging evidence questioning the safety of antidepressants, it is timely to investigate the appropriateness of antidepressant prescribing. This study estimated the prevalence of possible over- and under-treatment with antidepressants among primary care attendees and investigated the factors associated with potentially inappropriate antidepressant use. METHODS: In all, 789 adult primary care patients with depressive symptoms were recruited from 30 general practices in Victoria, Australia, in 2005 and followed up every 3 months in 2006 and annually from 2007 to 2011. For this study, we first assessed appropriateness of antidepressant use in 2007 at the 2-year follow-up to enable history of depression to be taken into account, providing 574 (73%) patients with five yearly assessments, resulting in a total of 2870 assessments. We estimated the prevalence of use of antidepressants according to the adapted National Institute for Health and Care Excellence guidelines and used regression analysis to identify factors associated with possible over- and under-treatment. RESULTS: In 41% (243/586) of assessments where antidepressants were indicated according to adapted National Institute for Health and Care Excellence guidelines, patients reported not taking them. Conversely in a third (557/1711) of assessments where guideline criteria were unlikely to be met, participants reported antidepressant use. Being female and chronic physical illness were associated with antidepressant use where guideline criteria were not met, but no factors were associated with not taking antidepressants where guideline criteria were met. CONCLUSIONS: Much antidepressant treatment in general practice is for people with minimal or mild symptoms, while people with moderate or severe depressive symptoms may miss out. There is considerable scope for improving depression care through better allocation of antidepressant treatment.


Assuntos
Antidepressivos , Depressão , Adulto , Antidepressivos/uso terapêutico , Estudos de Coortes , Feminino , Humanos , Estudos Longitudinais , Atenção Primária à Saúde , Vitória
3.
BMC Fam Pract ; 21(1): 87, 2020 05 14.
Artigo em Inglês | MEDLINE | ID: mdl-32410580

RESUMO

BACKGROUND: For people with hearing loss, the General Practitioner (GP) can play an instrumental role in early detection of hearing loss as well as guiding appropriate and timely choices for addressing hearing concerns. The aim of this study was to generate a conceptual framework for understanding the role of the GP in managing age-related hearing loss. METHODS: Concept mapping techniques were used to gather the perspectives of GPs (n = 8), adults with hearing loss (n = 22), and professionals working with GPs (n = 5), in Australia. Participants generated statements describing the role of the GP in managing age-related hearing loss, and then grouped the statements to identify key themes, via an online portal. RESULTS: Ninety-eight items describing the role of the GP in managing age-related hearing loss were identified across six concepts: 1) Determine - Diagnose - Discuss, 2) Ask - Assess - Act, 3) Know - Refer - Coordinate, 4) Inform - Advise - Partner, 5) Educate - Strategise - Encourage, 6) Reassure - Support - Empower. CONCLUSIONS: The role of the GP in managing age-related hearing loss is multifaceted and requires partnership that motivates and empowers patients' to overcome their hearing concerns. Enlisting the help of Practice Nurses, Practice Managers and local audiologists could help GPs improve their hearing loss detection and intervention rates.


Assuntos
Clínicos Gerais , Perda Auditiva/terapia , Papel do Médico , Atitude do Pessoal de Saúde , Austrália , Perda Auditiva/diagnóstico , Humanos , Profissionais de Enfermagem
4.
J Med Internet Res ; 22(12): e16729, 2020 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-33258790

RESUMO

BACKGROUND: People with type 2 diabetes mellitus (T2DM) often experience mental health symptoms that exacerbate illness and increase mortality risk. Access to psychological support is low in people with T2DM. Detection of depression is variable in primary care and can be further hampered by mental health stigma. Electronic mental health (eMH) programs may provide an accessible, private, nonstigmatizing mental health solution for this group. OBJECTIVE: This study aims to evaluate the efficacy over 12 months of follow-up of an eMH program (myCompass) for improving social and occupational functioning in a community sample of people with T2DM and self-reported mild-to-moderate depressive symptoms. myCompass is a fully automated and self-guided web-based public health program for people with depression or anxiety. The effects of myCompass on depressive symptoms, diabetes-related distress, anxiety symptoms, and self-care behavior were also examined. METHODS: Adults with T2DM and mild-to-moderate depressive symptoms (N=780) were recruited via online advertisements, community organizations, and general practices. Screening, consent, and self-report questionnaires were administered online. Eligible participants were randomized to receive either myCompass (n=391) or an attention control generic health literacy program (Healthy Lifestyles; n=379) for 8 weeks. At baseline and at 3, 6, and 12 months postintervention, participants completed the Work and Social Adjustment Scale, the Patient Health Questionnaire-9 item, the Diabetes Distress Scale, the Generalized Anxiety Disorder Questionnaire-7 item, and items from the Self-Management Profile for Type 2 Diabetes. Glycosylated hemoglobin measurements were obtained at baseline and 6 and 12 months postintervention. RESULTS: A total of 38.9% (304/780) of the trial participants completed all postintervention assessments. myCompass users logged in on an average of 6 times and completed an average of 0.29 modules. Healthy Lifestyles users logged in on an average of 4 times and completed an average of 1.37 modules. At baseline, the mean scores on several outcome measures, including the primary outcome of work and social functioning, were close to the normal range, despite a varied and extensive recruitment process. Intention-to-treat analyses revealed slightly greater improvement at 12 months in work and social functioning for the Healthy Lifestyles group relative to the myCompass group. All participants reported equivalent improvements in depression anxiety, diabetes distress, diabetes self-management, and glycemic control across the trial. CONCLUSIONS: The Healthy Lifestyles group reported higher ratings of social and occupational functioning than the myCompass group, but no differences were observed for any secondary outcome. Although these findings should be interpreted in light of the near-floor symptom scores at baseline, the trial yields important insights into how people with T2DM might be engaged in eMH programs and the challenges of focusing specifically on mental health. Several avenues emerge for continued investigation into how best to deal with the growing mental health burden in adults with T2DM. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry Number (ACTRN) 12615000931572; https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=368109&isReview=true.


Assuntos
Diabetes Mellitus Tipo 2/psicologia , Diabetes Mellitus Tipo 2/terapia , Intervenção Baseada em Internet/tendências , Saúde Mental/normas , Saúde Ocupacional/normas , Adolescente , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Fatores de Tempo , Adulto Jovem
5.
Psychol Health Med ; 25(3): 296-308, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31537118

RESUMO

Identification of mental health risk is important for optimising diabetes care in type 2 diabetes mellitus (T2DM). Personality is linked to diabetes health and may assist detection of individuals with T2DM most at risk of chronic mental health difficulties. This study examined the moderator effect of personality factors on changes in psychological distress and functioning in adults with T2DM and mild-to-moderate depressive symptoms across a 12-month period. Data were obtained from participants in a randomised controlled trial of adults with T2DM.  Participants completed measures of depression (Patient Health Questionnaire-9), anxiety (General Anxiety Disorder-7), general functioning (Work and Social Adjustment Scale), diabetes distress (Diabetes Distress Scale), and diabetes self-management (Self-Management Profile for Type 2 Diabetes) at baseline, 3-, 6- and 12-months. Glycaemic control (HbA1c) was measured at baseline, 6- and 12-months. Two hundred trial completers agreed to complete a personality inventory (Big Five Inventory). Low neuroticism was linked with reduced depression, anxiety, functional impairment and diabetes distress over the year. High extraversion was associated with decreased anxiety and functional impairment. High conscientiousness was linked to increased healthy eating. No personality trait moderated HbA1c levels. Personality screening may help identify mental health risk and guide medical carer approach in T2DM patients.


Assuntos
Ansiedade/psicologia , Depressão/psicologia , Diabetes Mellitus Tipo 2/psicologia , Personalidade , Angústia Psicológica , Adulto , Extroversão Psicológica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neuroticismo , Personalidade/fisiologia
6.
Int J Mol Sci ; 21(12)2020 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-32630425

RESUMO

Duchenne muscular dystrophy (DMD) is a severe muscle wasting disease typically caused by protein-truncating mutations that preclude synthesis of a functional dystrophin. Exonic deletions are the most common type of DMD lesion, however, whole exon duplications account for between 10-15% of all reported mutations. Here, we describe in vitro evaluation of antisense oligonucleotide-induced splice switching strategies to re-frame the transcript disrupted by a multi-exon duplication within the DMD gene. Phosphorodiamidate morpholino oligomers and phosphorodiamidate morpholino oligomers coupled to a cell penetrating peptide were evaluated in a Duchenne muscular dystrophy patient cell strain carrying an exon 14-17 duplication. Two strategies were employed; the conventional approach was to remove both copies of exon 17 in addition to exon 18, and the second strategy was to remove only the first copy of exon 17. Both approaches result in a larger than normal but in-frame DMD transcript, but surprisingly, the removal of only the first exon 17 appeared to be more efficient in restoring dystrophin, as determined using western blotting. The emergence of a normal sized DMD mRNA transcript that was not apparent in untreated samples may have arisen from back splicing and could also account for some of the dystrophin protein being produced.


Assuntos
Distrofina/genética , Éxons/genética , Terapia Genética/métodos , Células Cultivadas , Distrofina/metabolismo , Humanos , Mutação INDEL/genética , Músculo Esquelético/metabolismo , Distrofia Muscular de Duchenne/genética , Oligonucleotídeos/metabolismo , Oligonucleotídeos Antissenso/metabolismo , Splicing de RNA/genética , Splicing de RNA/fisiologia
7.
J Med Internet Res ; 21(5): e12246, 2019 05 21.
Artigo em Inglês | MEDLINE | ID: mdl-31115345

RESUMO

BACKGROUND: Depressive symptoms are common in people with type 2 diabetes mellitus (T2DM). Effective depression treatments exist; however, access to psychological support is characteristically low. Web-based cognitive behavioral therapy (CBT) is accessible, nonstigmatizing, and may help address substantial personal and public health impact of comorbid T2DM and depression. OBJECTIVE: The aim of this study was to evaluate the Web-based CBT program, myCompass, for improving social and occupational functioning in adults with T2DM and mild-to-moderate depressive symptoms. myCompass is a fully automated, self-guided public health treatment program for common mental health problems. The impact of treatment on depressive symptoms, diabetes-related distress, anxiety symptoms, and self-care behavior was also examined. METHODS: Participants with T2DM and mild-to-moderate depressive symptoms (N=780) were recruited online via Google and Facebook advertisements targeting adults with T2DM and via community and general practice settings. Screening, consent, and self-report scales were all self-administered online. Participants were randomized using double-blind computerized block randomization to either myCompass (n=391) for 8 weeks plus a 4-week tailing-off period or an active placebo intervention (n=379). At baseline and postintervention (3 months), participants completed the Work and Social Adjustment Scale, the primary outcome measure. Secondary outcome measures included the Patient Health Questionnaire-9 item, Diabetes Distress Scale, Generalized Anxiety Disorder Questionnaire-7 item, and items from the Self-Management Profile for Type 2 Diabetes. RESULTS: myCompass users logged in an average of 6 times and completed an average of .29 modules. Healthy Lifestyles users logged in an average of 4 times and completed an average of 1.37 modules. At baseline, mean scores on several outcome measures, including the primary outcome of work and social functioning, were near to the normal range, despite an extensive recruitment process. Approximately 61.6% (473/780) of participants completed the postintervention assessment. Intention-to-treat analyses revealed improvement in functioning, depression, anxiety, diabetes distress, and healthy eating over time in both groups. Except for blood glucose monitoring and medication adherence, there were no specific between-group effects. Follow-up analyses suggested the outcomes did not depend on age, morbidity, or treatment engagement. CONCLUSIONS: Improvement in social and occupational functioning and the secondary outcomes was generally no greater for myCompass users than for users of the control program at 3 months postintervention. These findings should be interpreted in light of near-normal mean baseline scores on several variables, the self-selected study sample, and sample attrition. Further attention to factors influencing uptake and engagement with mental health treatments by people with T2DM, and the impact of illness comorbidity on patient conceptualization and experience of mental health symptoms, is essential to reduce the burden of T2DM. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry ACTRN12615000931572; https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=368109&isReview=true (Archived by WebCite at http://www.webcitation.org/7850eg8pi).


Assuntos
Terapia Cognitivo-Comportamental/métodos , Depressão/etiologia , Depressão/terapia , Diabetes Mellitus Tipo 2/terapia , Feminino , Humanos , Internet , Masculino , Pessoa de Meia-Idade , Medicina do Trabalho , Avaliação de Resultados em Cuidados de Saúde , Habilidades Sociais , Inquéritos e Questionários , Resultado do Tratamento
8.
J Med Internet Res ; 21(5): e12793, 2019 05 24.
Artigo em Inglês | MEDLINE | ID: mdl-31127718

RESUMO

BACKGROUND: E-mental health (eMH) interventions are now widely available and they have the potential to revolutionize the way that health care is delivered. As most health care is currently delivered by primary care, there is enormous potential for eMH interventions to support, or in some cases substitute, services currently delivered face to face in the community setting. However, randomized trials of eMH interventions have tended to recruit participants using online recruitment methods. Consequently, it is difficult to know whether participants who are recruited online differ from those who attend primary care. OBJECTIVE: This paper aimed to document the experience of recruiting to an eMH trial through primary care and compare the characteristics of participants recruited through this and other recruitment methods. METHODS: Recruitment to the SpringboarD randomized controlled trial was initially focused on general practices in 2 states of Australia. Over 15 months, we employed a comprehensive approach to engaging practice staff and supporting them to recruit patients, including face-to-face site visits, regular contact via telephone and trial newsletters, and development of a Web-based patient registration portal. Nevertheless, it became apparent that these efforts would not yield the required sample size, and we therefore supplemented recruitment through national online advertising and promoted the study through existing networks. Baseline characteristics of participants recruited to the trial through general practice, online, or other sources were compared using the analysis of variance and chi square tests. RESULTS: Between November 2015 and October 2017, 780 people enrolled in SpringboarD, of whom 740 provided information on the recruitment source. Of these, only 24 were recruited through general practice, whereas 520 were recruited online and 196 through existing networks. Key barriers to general practice recruitment included perceived mismatch between trial design and diabetes population, prioritization of acute health issues, and disruptions posed by events at the practice and community level. Participants recruited through the 3 different approaches differed in age, gender, employment status, depressive symptoms, and diabetes distress, with online participants being distinguished from those recruited through general practice or other sources. However, most differences reached only a small effect size and are unlikely to be of clinical importance. CONCLUSIONS: Time, labor, and cost-intensive efforts did not translate into successful recruitment through general practice in this instance, with barriers identified at several different levels. Online recruitment yielded more participants, who were broadly similar to those recruited via general practice.


Assuntos
Depressão/terapia , Diabetes Mellitus Tipo 2/terapia , Saúde Mental/tendências , Telemedicina/métodos , Adolescente , Adulto , Idoso , Feminino , Humanos , Internet , Masculino , Pessoa de Meia-Idade , Atenção Primária à Saúde , Adulto Jovem
9.
Aust N Z J Psychiatry ; 52(5): 473-482, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29185352

RESUMO

OBJECTIVES: The taxi industry relies on a male-dominated, predominately immigrant workforce who face multiple risk factors for poor mental health including shift work, low pay and threats of violence. Despite these risk factors, no previous study has documented the prevalence of psychological distress in the taxi industry. We investigated psychological distress among urban taxi drivers and explored the factors associated with high levels of distress. METHOD: A total of 380 taxi drivers were surveyed at the Melbourne Airport holding yard between September 2016 and March 2017. Psychological distress was measured using the K10. Logistic regression models were used to estimate the association between high levels of psychological distress and migration, work patterns, potentially traumatic events, health care use and social connectedness. RESULTS: A third (33%) of drivers had very high (K10 ⩾ 30) levels of distress and 28% had high (K10 = 22-29) levels of distress. Trauma was significantly associated with high levels of psychological distress, and rates of trauma were much higher among drivers than among the Australian population. Despite high levels of distress, drivers were no more likely than other Australian men to visit a health professional. CONCLUSION: Urban taxi drivers are at very high risk for mental health problems, yet the mental health needs of this largely immigrant workforce has gone largely unnoticed. Interventions tailored to the unique characteristics of the job and the demographic composition of the workforce are urgently needed.


Assuntos
Condução de Veículo/estatística & dados numéricos , Trauma Psicológico/epidemiologia , Jornada de Trabalho em Turnos/estatística & dados numéricos , Estresse Psicológico/epidemiologia , Meios de Transporte/estatística & dados numéricos , População Urbana/estatística & dados numéricos , Carga de Trabalho/estatística & dados numéricos , Adulto , Estudos Transversais , Humanos , Masculino , Pessoa de Meia-Idade , Vitória/epidemiologia , Adulto Jovem
10.
J Med Internet Res ; 20(9): e10035, 2018 09 27.
Artigo em Inglês | MEDLINE | ID: mdl-30262449

RESUMO

BACKGROUND: Mobile apps are emerging as tools with the potential to revolutionize the treatment of mental health conditions such as depression. At the forefront of the community health sector, general practitioners are in a unique position to guide the integration of technology and depression management; however, little is currently known about how primary care patients with depressive symptoms are currently using apps. OBJECTIVE: The objective of our study was to explore the natural patterns of mobile app use among patients with depressive symptoms to facilitate the understanding of the potential role for mobile apps in managing depressive symptoms in the community. METHODS: Semistructured phone interviews were conducted with primary care patients in Victoria, Australia, who reported symptoms of depression and were enrolled in a larger randomized controlled trial of depression care. Interviews explored current depression management strategies and the use of mobile apps (if any). Interviews were audio-recorded and transcribed verbatim. Inductive thematic analysis was iteratively conducted using QSR NVivo 11 Pro to identify emergent themes. RESULTS: A total of 16 participants, aged between 20 to 58 years, took part in the interviews with 11 reporting the use of at least one mobile app to manage depressive symptoms and 5 reporting no app use. A variety of apps were described including relaxation, mindfulness, cognitive, exercise, gaming, social media, and well-being apps to aid with depressive symptoms. Among users, there were the following 4 main patterns of app use: skill acquisition, social connectedness, inquisitive trial, and safety netting. Factors that influenced app use included accessibility, perceptions of technology, and personal compatibility. Health care providers also had a role in initiating app use. CONCLUSIONS: Mobile apps are being utilized for self-management of depressive symptoms by primary care patients. This study provided insight into the natural patterns and perspectives of app use, which enhanced the understanding of how this technology may be integrated into the toolbox for the management of depression. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry ACTRN12616000537459; https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=367152 (Archived at WebCite at http://www.webcitation.org/71Vf06X2T).


Assuntos
Depressão/terapia , Aplicativos Móveis/tendências , Atenção Primária à Saúde/tendências , Pesquisa Qualitativa , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
11.
Proc Natl Acad Sci U S A ; 111(28): E2905-14, 2014 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-24969422

RESUMO

Duchenne muscular dystrophy is a fatal X-linked disease characterized by the absence of dystrophin. Approximately 20% of boys will die of dilated cardiomyopathy that is associated with cytoskeletal protein disarray, contractile dysfunction, and reduced energy production. However, the mechanisms for altered energy metabolism are not yet fully clarified. Calcium influx through the L-type Ca(2+) channel is critical for maintaining cardiac excitation and contraction. The L-type Ca(2+) channel also regulates mitochondrial function and metabolic activity via transmission of movement of the auxiliary beta subunit through intermediate filament proteins. Here, we find that activation of the L-type Ca(2+) channel is unable to induce increases in mitochondrial membrane potential and metabolic activity in intact cardiac myocytes from the murine model of Duchenne muscular dystrophy (mdx) despite robust increases recorded in wt myocytes. Treatment of mdx mice with morpholino oligomers to induce exon skipping of dystrophin exon 23 (that results in functional dystrophin accumulation) or application of a peptide that resulted in block of voltage-dependent anion channel (VDAC) "rescued" mitochondrial membrane potential and metabolic activity in mdx myocytes. The mitochondrial VDAC coimmunoprecipitated with the L-type Ca(2+) channel. We conclude that the absence of dystrophin in the mdx ventricular myocyte leads to impaired functional communication between the L-type Ca(2+) channel and mitochondrial VDAC. This appears to contribute to metabolic inhibition. These findings provide new mechanistic and functional insight into cardiomyopathy associated with Duchenne muscular dystrophy.


Assuntos
Canais de Cálcio Tipo L/metabolismo , Distrofina/metabolismo , Potencial da Membrana Mitocondrial , Membranas Mitocondriais/metabolismo , Distrofia Muscular de Duchenne/metabolismo , Miócitos Cardíacos/metabolismo , Animais , Cálcio/metabolismo , Distrofina/antagonistas & inibidores , Distrofina/genética , Éxons , Ventrículos do Coração/metabolismo , Ventrículos do Coração/patologia , Masculino , Camundongos , Camundongos Endogâmicos mdx , Membranas Mitocondriais/patologia , Morfolinos/genética , Morfolinos/farmacologia , Distrofia Muscular de Duchenne/tratamento farmacológico , Distrofia Muscular de Duchenne/genética , Distrofia Muscular de Duchenne/patologia , Miocárdio , Miócitos Cardíacos/patologia
12.
J Exp Bot ; 67(17): 5159-72, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-27443279

RESUMO

A stay-green phenotype enables crops to retain green leaves longer after anthesis compared with senescent types, potentially improving yield. Measuring the normalized difference vegetative index (NDVI) during the whole senescence period allows quantification of component stay-green traits contributing to a stay-green phenotype. These objective and standardized traits can be compared across genotypes and environments. Traits examined include maximum NDVI near anthesis (Nmax), senescence rate (SR), a trait integrating senescence (SGint), plus time from anthesis to onset (OnS), mid-point (MidS), and near completion (EndS) of senescence. The correlation between stay-green traits and yield was studied in eight contrasting environments ranging from well watered to severely water limited. Environments were each classified into one of the four major drought environment types (ETs) previously identified for the Australian wheat cropping system. SGint, OnS, and MidS tended to have higher values in higher yielding environments for a given genotype, as well as for higher yielding genotypes within a given environment. Correlation between specific stay-green traits and yield varied with ET. In the studied population, SGint, OnS, and MidS strongly correlated with yield in three of the four ETs which included well-watered environments (0.43-0.86), but less so in environments with only moderate water-stress after anthesis (-0.03 to 0.31). In contrast, Nmax was most highly correlated with yield under moderate post-anthesis water stress (0.31-0.43). Selection for particular stay-green traits, combinations of traits, and/or molecular markers associated with the traits could enhance genetic progress toward stay-green wheats with higher, more stable yield in both well-watered and water-limited conditions.


Assuntos
Folhas de Planta/fisiologia , Triticum/fisiologia , Adaptação Fisiológica , Envelhecimento/fisiologia , Produção Agrícola , Desidratação/fisiopatologia , Meio Ambiente , Folhas de Planta/crescimento & desenvolvimento , Característica Quantitativa Herdável , Triticum/crescimento & desenvolvimento
13.
RNA Biol ; 12(4): 412-25, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25849197

RESUMO

A major obstacle for effective utilization of therapeutic oligonucleotides such as siRNA, antisense, antimiRs etc. is to deliver them specifically to the target tissues. Toward this goal, nucleic acid aptamers are re-emerging as a prominent class of biomolecules capable of delivering target specific therapy and therapeutic monitoring by various molecular imaging modalities. This class of short oligonucleotide ligands with high affinity and specificity are selected from a large nucleic acid pool against a molecular target of choice. Poor cellular uptake of therapeutic oligonucleotides impedes gene-targeting efficacy in vitro and in vivo. In contrast, aptamer-oligonucleotide chimeras have shown the capacity to deliver siRNA, antimiRs, small molecule drugs etc. toward various targets and showed very promising results in various studies on different diseases models. However, to further improve the bio-stability of such chimeric conjugates, it is important to introduce chemically-modified nucleic acid analogs. In this review, we highlight the applications of nucleic acid aptamers for target specific delivery of therapeutic oligonucleotides.


Assuntos
RNA/metabolismo , RNA/uso terapêutico , Animais , Aptâmeros de Nucleotídeos/química , Aptâmeros de Nucleotídeos/metabolismo , Humanos , Especificidade de Órgãos , RNA/química , RNA Longo não Codificante/administração & dosagem , RNA Longo não Codificante/química
14.
Psychosom Med ; 75(1): 68-75, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23293103

RESUMO

OBJECTIVE: The first aim of this work was to conduct a rigorous longitudinal study to identify rates of delayed-onset posttraumatic stress disorder (PTSD) in a sample of patients with severe injury. The second aim was to determine what variables differentiated delayed-onset PTSD from chronic PTSD. METHODS: Randomly selected patients with injury who were admitted to four hospitals around Australia were recruited to the study (N = 834) and assessed in the acute care hospital, at 3 months, and at 12 months. A structured clinical interview was used to assess PTSD at each time point. RESULTS: Seventy-three patients (9%; n = 73) had PTSD at 12 months. Of these, 39 (53%) were classified as having delayed-onset PTSD. Furthermore, 22 (56%) patients with delayed-onset PTSD had minimal PTSD symptoms at 3 months (i.e., they did not have partial/subsyndromal PTSD at 3 months). The variables that differentiated delayed-onset PTSD from chronic PTSD were greater injury severity (odds ratio [OR] = 1.13; 95% confidence interval [CI] = 1.02-1.26), lower anxiety severity at 3 months (OR = 0.73; 95% CI = 0.61-0.87), and greater pain severity at 3 months (OR = 1.39; 95% CI = 1.06-1.84). CONCLUSIONS: Delayed-onset PTSD occurred frequently in this sample. Approximately half of the patients with delayed-onset PTSD had minimal PTSD symptoms at 3 months; therefore, their delayed-onset PTSD could not be accounted for by a small number of fluctuating symptoms. As we move toward DSM-V, it is important that research continues to explore the factors that underpin the development of delayed-onset PTSD.


Assuntos
Dor/psicologia , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Ferimentos e Lesões/psicologia , Adolescente , Adulto , Idoso , Ansiedade/epidemiologia , Austrália/epidemiologia , Lesões Encefálicas/psicologia , Feminino , Humanos , Escala de Gravidade do Ferimento , Tempo de Internação/estatística & dados numéricos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Razão de Chances , Dor/etiologia , Estudos Prospectivos , Fatores de Risco , Transtornos de Estresse Pós-Traumáticos/etiologia , Adulto Jovem
15.
Theor Appl Genet ; 126(6): 1563-74, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23525632

RESUMO

Root architecture traits in wheat are important in deep soil moisture acquisition and may be used to improve adaptation to water-limited environments. The genetic architecture of two root traits, seminal root angle and seminal root number, were investigated using a doubled haploid population derived from SeriM82 and Hartog. Multiple novel quantitative trait loci (QTL) were identified, each one having a modest effect. For seminal root angle, four QTL (-log10(P) >3) were identified on 2A, 3D, 6A and 6B, and two suggestive QTL (-log10(P) >2) on 5D and 6B. For root number, two QTL were identified on 4A and 6A with four suggestive QTL on 1B, 3A, 3B and 4A. QTL for root angle and root number did not co-locate. Transgressive segregation was found for both traits. Known major height and phenology loci appear to have little effect on root angle and number. Presence or absence of the T1BL.1RS translocation did not significantly influence root angle. Broad sense heritability (h (2)) was estimated as 50 % for root angle and 31 % for root number. Root angle QTL were found to be segregating between wheat cultivars adapted to the target production region indicating potential to select for root angle in breeding programs.


Assuntos
Adaptação Biológica/genética , Raízes de Plantas/crescimento & desenvolvimento , Raízes de Plantas/genética , Locos de Características Quantitativas/genética , Triticum/genética , Mapeamento Cromossômico , Secas , Genótipo , Modelos Lineares , Raízes de Plantas/anatomia & histologia
16.
Aust Fam Physician ; 42(9): 610-4, 2013 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24024219

RESUMO

BACKGROUND: There is a high prevalence of psychological trauma exposure among primary care patients. General practitioners are well placed to provide appropriate support for patients coping with trauma. OBJECTIVE: This article outlines an evidence-based early response to psychological trauma. DISCUSSION: Psychological first aid is the preferred approach in providing early assistance to patients who have experienced a traumatic event. General practitioners can be guided by five empirically derived principles in their early response: promoting a sense of safety, calming, self efficacy, connectedness and hope. Structured psychological interventions, including psychological debriefing, are not routinely recommended in the first few weeks following trauma exposure. General practitioner self care is an important aspect of providing post-trauma patient care.


Assuntos
Medicina Geral , Acontecimentos que Mudam a Vida , Papel do Médico , Estresse Psicológico/terapia , Adaptação Psicológica , Medicina Baseada em Evidências , Esperança , Humanos , Segurança , Autoeficácia , Apoio Social , Transtornos de Estresse Pós-Traumáticos/prevenção & controle , Transtornos de Estresse Pós-Traumáticos/psicologia
17.
Prim Health Care Res Dev ; 24: e16, 2023 02 27.
Artigo em Inglês | MEDLINE | ID: mdl-36843079

RESUMO

BACKGROUND: Current treatment guidelines advise that the deprescribing of antidepressants should occur around 6 months post-remission of symptoms. However, this is not routinely occurring in clinical practice, with between 30% and 50% of antidepressant users potentially continuing treatment with no clinical benefit. To support patients to deprescribe antidepressant treatment when clinically appropriate, it is important to understand what is important to patients when making the decision to reduce or cease antidepressants in a naturalistic setting. AIM: The current study aimed to describe the self-reported reasons primary care patients have for reducing or stopping their antidepressant medication. METHODS: Three hundred and seven participants in the diamond longitudinal study reported taking an SSRI/SNRI over the life of the study. Of the 307, 179 reported stopping or tapering their antidepressant during computer-assisted telephone interviews and provided a reason for doing so. A collective case study approach was used to collate the reasons for stopping or tapering. FINDINGS: Reflexive thematic analysis of patient-reported factors revealed five overarching themes; 1. Depression; 2. Medication; 3. Healthcare system; 4. Psychosocial, and; 5. Financial. These findings are used to inform suggestions for the development and implementation of antidepressant deprescribing discussions in clinical practice.


Assuntos
Antidepressivos , Atenção Primária à Saúde , Humanos , Estudos Longitudinais , Autorrelato , Antidepressivos/uso terapêutico
18.
Health Soc Care Community ; 30(5): e2097-e2108, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-34766664

RESUMO

BACKGROUND: Subthreshold depression is common in primary care, but there is little information about the self-help strategies that patients use and the perceived benefits of these. AIM: This study sought to elicit the self-help strategies that primary care attendees identified as beneficial for the self-management of subthreshold depressive symptoms and the implications for general practitioners. METHOD: Semi-structured telephone interviews were conducted with 14 people (April-May 2017) from the Target-D randomised controlled trial (RCT). Target-D investigated whether using a patient-centred clinical prediction tool and an e-health platform to match mental health management options to prognosis was beneficial for improving depressive symptoms at 3 months compared to usual care. Interviews were thematically analysed to identify self-help strategies and their perceived benefits. RESULTS: Four overarching domains for the self-management strategies were identified: social, cognitive, behavioural and restorative. Interviewees reported using strategies across multiple domains, which included undertaking enjoyable, immersive activities, that provided relief from automatic negative thoughts and had a perceived cognitive benefit. Differences in the perceived sense of agency were noted around the self-regulation of mood, which indicated more explicit direction to patient-identified self-help management strategies by general practitioners for some may be of benefit in routine care. CONCLUSION: Some of the reported self-management strategies aligned with evidence-based approaches such as physical activity and mindfulness for mental health symptom management. These findings can inform low-intensity interventions within stepped care models for mental health in primary care, social prescribing models and, help to guide the management of patients by GPs for subthreshold depression.


Assuntos
Depressão , Atenção Primária à Saúde , Austrália , Depressão/terapia , Humanos , Medidas de Resultados Relatados pelo Paciente , Pesquisa Qualitativa , Ensaios Clínicos Controlados Aleatórios como Assunto
19.
BMC Prim Care ; 23(1): 236, 2022 09 16.
Artigo em Inglês | MEDLINE | ID: mdl-36109694

RESUMO

BACKGROUND: This paper reports on the cost-effectiveness evaluation of Link-me - a digitally supported, systematic approach to triaging care for depression and anxiety in primary care that uses a patient-completed Decision Support Tool (DST). METHODS: The economic evaluation was conducted alongside a parallel, stratified individually randomised controlled trial (RCT) comparing prognosis-matched care to usual care at six- and 12-month follow-up. Twenty-three general practices in three Australian Primary Health Networks recruited 1,671 adults (aged 18 - 75 years), predicted by the DST to have minimal/mild or severe depressive or anxiety symptoms in three months. The minimal/mild prognostic group was referred to low intensity services. Participants screened in the severe prognostic group were offered high intensity care navigation, a model of care coordination. The outcome measures included in this evaluation were health sector costs (including development and delivery of the DST, care navigation and other healthcare services used) and societal costs (health sector costs plus lost productivity), psychological distress [Kessler Psychological Distress Scale (K10)] and quality adjusted life years (QALYs) derived from the EuroQol 5-dimension quality of life questionnaire with Australian general population preference weights applied. Costs were valued in 2018-19 Australian dollars (A$). RESULTS: Across all participants, the health sector incremental cost-effectiveness ratio (ICER) of Link-me per point decrease in K10 at six months was estimated at $1,082 (95% CI $391 to $6,204) increasing to $2,371 (95% CI $191 to Dominated) at 12 months. From a societal perspective, the ICER was estimated at $1,257/K10 point decrease (95% CI Dominant to Dominated) at six months, decreasing to $1,217 (95% CI Dominant to Dominated) at 12 months. No significant differences in QALYs were detected between trial arms and the intervention was dominated (less effective, more costly) based on the cost/QALY ICER. CONCLUSIONS: The Link-me approach to stepped mental health care would not be considered cost-effective utilising a cost/QALY outcome metric commonly adopted by health technology assessment agencies. Rather, Link-me showed a trend toward cost-effectiveness by providing improvement in mental health symptoms, measured by the K10, at an additional cost. TRIAL REGISTRATION: Australian and New Zealand Clinical Trials Registry, ANZCTRN 12617001333303.


Assuntos
Medicina Geral , Saúde Mental , Adulto , Austrália , Análise Custo-Benefício , Humanos , Anos de Vida Ajustados por Qualidade de Vida
20.
PLoS One ; 17(5): e0268948, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35613149

RESUMO

BACKGROUND: Target-D, a new person-centred e-health platform matching depression care to symptom severity prognosis (minimal/mild, moderate or severe) has demonstrated greater improvement in depressive symptoms than usual care plus attention control. The aim of this study was to evaluate the cost-effectiveness of Target-D compared to usual care from a health sector and partial societal perspective across 3-month and 12-month follow-up. METHODS AND FINDINGS: A cost-utility analysis was conducted alongside the Target-D randomised controlled trial; which involved 1,868 participants attending 14 general practices in metropolitan Melbourne, Australia. Data on costs were collected using a resource use questionnaire administered concurrently with all other outcome measures at baseline, 3-month and 12-month follow-up. Intervention costs were assessed using financial records compiled during the trial. All costs were expressed in Australian dollars (A$) for the 2018-19 financial year. QALY outcomes were derived using the Assessment of Quality of Life-8D (AQoL-8D) questionnaire. On a per person basis, the Target-D intervention cost between $14 (minimal/mild prognostic group) and $676 (severe group). Health sector and societal costs were not significantly different between trial arms at both 3 and 12 months. Relative to a A$50,000 per QALY willingness-to-pay threshold, the probability of Target-D being cost-effective under a health sector perspective was 81% at 3 months and 96% at 12 months. From a societal perspective, the probability of cost-effectiveness was 30% at 3 months and 80% at 12 months. CONCLUSIONS: Target-D is likely to represent good value for money for health care decision makers. Further evaluation of QALY outcomes should accompany any routine roll-out to assess comparability of results to those observed in the trial. This trial is registered with the Australian New Zealand Clinical Trials Registry (ACTRN12616000537459).


Assuntos
Depressão , Qualidade de Vida , Austrália , Análise Custo-Benefício , Depressão/terapia , Humanos , Atenção Primária à Saúde , Prognóstico , Anos de Vida Ajustados por Qualidade de Vida
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