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1.
BMC Psychiatry ; 24(1): 96, 2024 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-38317157

RESUMO

BACKGROUND: Early intervention in psychosis (EIP) supports people who are experiencing their first episode of psychosis (FEP). A new Model of Care (MoC) for EIP services was launched in Ireland in 2019. Three EIP demonstration sites were chosen to test this MoC through a 'hub and spoke' approach. These services were a new way of organising care for people experiencing FEP, based upon a recovery model of care, and which sought to standardise care, improve access by clinically led multidisciplinary teams. This included newly created EIP keyworker roles whereby keyworkers assumed responsibilities regarding assessment, comprehensive individual care planning and coordination of care. METHODS: A mixed methods design utilising the UK Medical Research Council's process evaluation framework. Purposive sampling techniques were utilised. Descriptive analyses and logistic regression were performed to examine how increased keyworker engagement influenced the use of other psychosocial interventions within the EIP demonstration sites. Thematic analyses was used for qualitative data. RESULTS: There was a strong positive relationship between keyworker contacts and psychosocial interventions offered. Specifically, the odds of achieving at least monthly engagement with cognitive behavioural therapy for psychosis (CBTp; (5.76 (2.43-13.64), p < 0.001), and behavioural family therapy (BFT; (5.52(1.63-18.69, p < 0.006)) increased by fivefold with each additional monthly keyworker contact. For individual placement support (IPS) each additional monthly keyworker contact was associated with a three-fold increase in the odds of achieving monthly attendance with IPS (3.73 (1.64-8.48), p < 0.002). Qualitative results found that the EIP keyworker role as viewed by both service users and staff as a valuable nodal point, with a particular emphasis on care coordination and effective communication. CONCLUSIONS: This study advances the understanding of keyworker effects through qualitative evidence of keyworkers functioning as a "linchpin" to the service, while the positive response association between keyworker contacts and engagement with other services provides quantitative support for keyworkers reducing the organisational or structural barriers to service access. Given the importance of these positions, health systems should ensure that EIP programmes identify qualified and experienced staff to fill these roles, as well as allocate the appropriate funding and protected time to support keyworker engagement and impact.


Assuntos
Terapia Cognitivo-Comportamental , Transtornos Psicóticos , Humanos , Intervenção Psicossocial , Transtornos Psicóticos/terapia , Transtornos Psicóticos/psicologia , Terapia Comportamental , Terapia Cognitivo-Comportamental/métodos , Intervenção Médica Precoce/métodos
2.
Ir J Psychol Med ; : 1-8, 2023 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-37929580

RESUMO

OBJECTIVES: To evaluate the impact of treatment provided by a Crisis Resolution Home Treatment Team (CRHTT) in terms of preventing hospital admission, impact on service user's symptoms and overall functioning, as well as service user's satisfaction with the service. Secondary objectives were to evaluate the patient characteristics of those attending the CRHTT. METHODS: All the service users treated by the CRHTT between 2016 and 2020 were included. Service users completed the Brief Psychiatric Rating Scale (BPRS), the Health of the Nation Outcome Scale (HoNOS), and the Client Satisfaction Questionnaire-version 8 (CSQ-8) before and after treatment by the CRHTT. Admission rates were compared between areas served by the CRHTT and control, before and after the introduction of the CRHTT, using two-way ANOVA. RESULTS: Between 2016 and 2020, 1041 service users were treated by the service. Inpatient admissions in the areas served by the CRHTT fell by 38.5% after its introduction. There was a statistically significant interaction between CRHTT availability and time on admission rate, F (1,28) = 8.4, p = .007. BPRS scores were reduced significantly (p < .001), from a mean score of 32.01 before treatment to 24.64 after treatment. Mean HoNOS scores were 13.6 before and 9.1 after treatment (p < .001). Of the 1041 service users receiving the CSQ-8, only 180 returned it (17.3%). Service users' median responses were "very positive" to all eight items on the CSQ-8. CONCLUSIONS: Although our study design has limitations this paper provides some support that CRHTT might be effective for the prevention of inpatient admission. The study also supports that CRHTT might be an effective option for the treatment of acute mental illness and crisis, although further research is needed in this area.

4.
BMC Health Serv Res ; 23(1): 653, 2023 Jun 19.
Artigo em Inglês | MEDLINE | ID: mdl-37337176

RESUMO

BACKGROUND: Programmes for early intervention (EIP) in psychosis for people experiencing a first episode of psychosis (FEP) have been found to be both clinically and cost effective. Following the publication of a new EIP model of care (MoC) in Ireland, the aim of this research is to describe how people participated in and responded to the MoC including service users, family members, HSE clinical staff and HSE management. METHODS: Qualitative design using the UK Medical Research Council's process evaluation framework. Purposive sampling techniques were used. A total of N = 40 key informant semi-structured interviews were completed which included clinical staff (N = 22), health service managers and administrators (N = 9), service users (N = 8) and a family member (N = 1). Thematic analyses were conducted. RESULTS: Unique features of the EIP service (e.g., speed of referral/assessment, multidisciplinary approach, a range of evidence-based interventions and assertive MDT follow up) and enthusiasm for EIP were identified as two key factors that facilitated implementation. In contrast, obstacles to staff recruitment and budget challenges emerged as two primary barriers to implementation. CONCLUSIONS: The findings from this research provide real world insights into the complexity of implementing an innovative service within an existing health system. Clear and committed financial and human resource processes which allow new innovations to thrive and be protected during their initiation and early implementation phase are paramount. These elements should be considered in the planning and implementation of EIP services both nationally in Ireland and internationally.


Assuntos
Pesquisa Biomédica , Serviços de Saúde Mental , Transtornos Psicóticos , Humanos , Irlanda , Transtornos Psicóticos/terapia , Projetos de Pesquisa
5.
Psychol Health Med ; 28(1): 110-123, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-35089104

RESUMO

The psychological impact of COVID-19 on Health Care Workers (HCWs) has been widely reported. Few studies have sought to examine HCWs personal models of COVID-19 utilising an established theoretical framework. We undertook a mixed methods study of beliefs about COVID-19 held by HCWs in the Mid-West and South of Ireland during the first and third waves of COVID-19. Template analysis was undertaken on the free text responses of 408 HCWs about their perceptions of the Cause of COVID-19 as assessed by the Brief Illness Perception Questionnaire (B-IPQ). Responses were re-examined in the same cohort for stability at 3 months follow-up (n = 100). This analytic template was subsequently examined in a new cohort (n = 253) of HCWs in the third wave. Female HCWs perceived greater emotional impact of COVID-19 than men (t = -4.31, df405, p < 0.01). Differences between occupational groups were evident in relation to Timeline (F4,401 = 3.47, p < 0.01), Treatment Control (F4,401 = 5.64, p < 0.001) and Concerns about COVID-19 (F4,401 = 3.68, p < 0.01). Administration staff believed that treatment would be significantly more helpful and that COVID-19 would last a shorter amount of time than medical/nursing staff and HSCP. However, administration staff were significantly more concerned than HSCP about COVID-19. Template analysis on 1059 responses to the Cause items of the B-IPQ identified ten higher order categories of perceived Cause of COVID-19. The top two Causes identified at both Waves were 'individual behavioural factors' and 'overseas travel'. This study has progressed our understanding of the models HCWs hold about COVID-19 over time, and has highlighted the utility of the template analysis approach in analysing free-text questionnaire data. We suggest that group and individual occupational identities of HCWs may be of importance in shaping HCWs responses to working through COVID-19.


Assuntos
COVID-19 , Recursos Humanos de Enfermagem , Feminino , Humanos , Masculino , Emoções , Pessoal de Saúde
6.
Ir J Psychol Med ; 40(1): 84-88, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-34839854

RESUMO

Mental health issues are fast becoming one of society's greatest health challenges with evidence of higher levels of illness and strain on psychiatric services. The reasons for this trend of increasing mental health problems across the population are complex and there is an urgent need to research and deliver effective public mental health strategies. In this perspective piece we argue that psychiatrists and public health physicians have unique knowledge and perspectives on population mental health. The development of interdisciplinary initiatives and training posts would result in clinicians with expertise to drive forward public mental health strategies. Focused and sustained advocacy and collaboration are necessary for prioritisation of public mental health on policymakers' agendas.


Assuntos
Transtornos Mentais , Serviços de Saúde Mental , Psiquiatria , Humanos , Saúde Mental , Transtornos Mentais/terapia , Saúde Pública
7.
Schizophrenia (Heidelb) ; 8(1): 113, 2022 Dec 17.
Artigo em Inglês | MEDLINE | ID: mdl-36528607

RESUMO

Cognitive impairment is a core feature of psychosis. Full cognitive assessments are not often conducted in routine clinical practice as administration is time-consuming. Here, we investigated whether brief tests of cognition could be used to predict broader neurocognitive performance in a manner practical for screening use in mental health services. We carried out a principal component analysis (PCA) to obtain an estimate of general cognitive function (N = 415). We investigated whether brief tests of memory accounted for a significant percentage of variation in the PCA scores. We used discriminant function analysis to determine if measures could predict classification as lower, intermediate or higher level of cognitive function and to what extent these groups overlapped with groups based on normative data. Memory tests correctly classified 65% of cases in the highest scoring group, 35% of cases in the intermediate group, and 77% of cases in the lowest scoring group. These PCA-derived groups and groups based on normative scores for the two tests were significantly associated (χ2 = 164.00, p < 0.001). These measures accurately identified three quarters of the low performing group, the group of greatest interest from the perspective of identifying those likely to need greater supports as part of clinical care. In so doing they suggest a potentially useful approach to screening for cognitive impairment in clinical services, upon which further assessment can be built if required.

8.
Brain Commun ; 4(4): fcac159, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35794871

RESUMO

Longitudinal alterations of gamma-aminobutyric acid (GABAA) receptor availability following traumatic brain injury have remained uncharacterized and may reflect changes in neuronal structure and function linked to cognitive recovery. We measured GABAA receptor availability using the tracer [11C]flumazenil in nine adults with traumatic brain injury (3-6 months after injury, subacute scan) and in 20 non-brain-injured individuals. A subset of subjects with traumatic brain injury (n = 7) were scanned at a second chronic time-point, 7-13 months after their first scan; controls (n = 9) were scanned for a second time, 5-11 months after the first scan. After accounting for atrophy in subjects with traumatic brain injury, we find broad decreases in GABAA receptor availability predominantly within the frontal lobes, striatum, and posterior-medial thalami; focal reductions were most pronounced in the right insula and anterior cingulate cortex (p < 0.05). Greater relative increase, compared to controls, in global GABAA receptor availability appeared between subacute and chronic scans. At chronic scan (>1 year post-injury), we find increased pallidal receptor availability compared to controls. Conversely, receptor availability remained depressed across the frontal cortices. Longitudinal improvement in executive attention correlated with increases in receptor availability across bilateral fronto-parietal cortical regions and the anterior-lateral aspects of the thalami. The specific observations of persistent bi-frontal lobe reductions and bilateral pallidal elevation are consistent with the anterior forebrain mesocircuit hypothesis for recovery of consciousness following a wide range of brain injuries; our results provide novel correlative data in support of specific cellular mechanisms underlying persistent cognitive deficits. Collectively, these measurements support the use of [11C]flumazenil to track recovery of large-scale network function following brain injuries and measure response to therapeutics.

9.
Eur Psychiatry ; 65(1): e2, 2021 12 16.
Artigo em Inglês | MEDLINE | ID: mdl-34913421

RESUMO

BACKGROUND: Early intervention in psychosis (EIP) services target the early manifestation of psychosis and provide multidisciplinary care. They demonstrate effectiveness and cost-effectiveness. Implementation of EIP services is inconsistent and piecemeal. This systematic review and narrative synthesis aims to identify barriers and facilitators to EIP service implementation. METHODS: We conducted an electronic search of databases (EMBASE, Medline, Web of Science, and PsychINFO) to detect papers reporting EIP service implementation findings and associated barriers and facilitators. The search occurred between June to August 2020, and again in January 2021. Articles meeting inclusion criteria were extracted and narratively synthesized. A quality assessment was conducted using the Mixed Methods Appraisal Tool. RESULTS: Twenty-three studies were selected. The most common study design was descriptive accounts of implementation. Patient age ranged varied from 14 to 35 years. We identified three barrier and facilitator domains: (a) system; (b) services; and (c) staff, and a range of subdomains. The most frequent subdomains were "funding" and "strength of collaboration and communication between EIP and outside groups and services". Associations between domains and subdomains were evident, particularly between systems and services. CONCLUSIONS: A range of barriers and facilitators to EIP implementation exist. Some of these are generic factors germane across health systems and services, while others are specific to EIP services. A thorough prior understanding of these challenges and enablers are necessary before implementation is attempted. Accounting for these issues within local and national contexts may help predict and increase the likelihood of services' success, stability, and longevity.


Assuntos
Transtornos Psicóticos , Adolescente , Adulto , Análise Custo-Benefício , Humanos , Transtornos Psicóticos/terapia , Adulto Jovem
10.
Am J Physiol Endocrinol Metab ; 321(1): E24-E46, 2021 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-33900849

RESUMO

Prematurity is the leading cause of neonatal morbidity and mortality worldwide. Premature infants often require extended hospital stays, with increased risk of developing infection compared with term infants. A picture is emerging of wide-ranging deleterious consequences resulting from innate immune system activation in the newborn infant. Those who survive infection have been exposed to a stimulus that can impose long-lasting alterations into later life. In this review, we discuss sepsis-driven alterations in integrated neuroendocrine and metabolic pathways and highlight current knowledge gaps in respect of neonatal sepsis. We review established biomarkers for sepsis and extend the discussion to examine emerging findings from human and animal models of neonatal sepsis that propose novel biomarkers for early identification of sepsis. Future research in this area is required to establish a greater understanding of the distinct neonatal signature of early and late-stage infection, to improve diagnosis, curtail inappropriate antibiotic use, and promote precision medicine through a biomarker-guided empirical and adjunctive treatment approach for neonatal sepsis. There is an unmet clinical need to decrease sepsis-induced morbidity in neonates, to limit and prevent adverse consequences in later life and decrease mortality.


Assuntos
Sistema Endócrino , Imunidade Inata/fisiologia , Recém-Nascido Prematuro , Redes e Vias Metabólicas , Sepse Neonatal , Animais , Biomarcadores , Gônadas , Humanos , Hidrocortisona/sangue , Sistema Hipotálamo-Hipofisário , Recém-Nascido , Sistemas Neurossecretores , Sepse , Glândula Tireoide
11.
Behav Res Ther ; 138: 103804, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33454578

RESUMO

Body-focused repetitive behaviors (BFRBs), such as hair-pulling, skin-picking, and nail-biting, have been associated with difficulties in emotion regulation. Studies have suggested that aversive emotions are important triggers for impulsive behaviors such as BFRBs and binge eating. In particular, shame has been hypothesized to be a key emotion before and after these behaviors, but no experimental studies yet have investigated its impact on BFRBs. We aimed to evaluate the role of shame in BFRB and binge eating episodes and the presence of shame following these behaviors. Eighteen women with BFRBs, 18 with binge eating, and 18 community controls participated in the study. Results showed that an experimental shame condition triggered more shame in the binge eating and BFRB groups than in the control group. In addition, the shame induced condition increased the urge to engage in BFRBs, but not in binge eating. Results showed that participants from the BFRB and the binge eating groups reported more shame after engaging in their pathological behaviors compared to following the neutral condition. Future studies should replicate these findings with larger samples and different shame-inducing conditions.


Assuntos
Transtorno da Compulsão Alimentar , Comportamento Autodestrutivo , Tricotilomania , Emoções , Feminino , Humanos , Vergonha
12.
Ir J Psychol Med ; 38(3): 214-219, 2021 09.
Artigo em Inglês | MEDLINE | ID: mdl-32434611

RESUMO

In the last three decades, early intervention for psychosis (EIP) services have been established worldwide and have resulted in superior symptomatic and functional outcomes for people affected by psychotic disorders. These improved outcomes are a result of reducing delays to treatment and the provision of specialised, holistic interventions. The COVID-19 pandemic poses significant challenges to the delivery of these services, such as undetected cases or long delays to treatment. Furthermore, the COVID-19 pandemic will likely increase the mental health needs of communities, including the incidence of psychotic disorders. In this perspective piece, we provide suggestions as to how EIP services can adapt within this environment, such as utilising novel technologies. Finally, we argue that despite the economic consequences of the pandemic, the funding for mental health services, including EI services, should be increased in line with the need for these services during and beyond the pandemic.


Assuntos
COVID-19 , Serviços de Saúde Mental , Transtornos Psicóticos , Humanos , Pandemias , Transtornos Psicóticos/epidemiologia , Transtornos Psicóticos/terapia , SARS-CoV-2
13.
Ir Med J ; 113(1): 4, 2020 01 16.
Artigo em Inglês | MEDLINE | ID: mdl-32298558

RESUMO

Introduction Is Therapeutic Listening effective for children born preterm presenting with sensory dysregulation, attention and cognitive problems? Methods 22 children (BW<1500g) 3-4 years were enrolled in a single centre, prospective, assessor-blinded RTC. Outcome measures: Winnie-Dunn Sensory Profile; Peabody Developmental Motor Scales; Reynell Attention Scale; Preschool Language Scales - 3; RAPT; WPPSI - IV; Parent Review Questionnaires. Results The intervention group (n=9) showed better improvement in sensory processing, compared to controls (n=9) (6.4 fold improvement in sensation seeking; 5.0 in auditory processing; 4.0 in tactile processing). Six intervention children (67%) improved in vestibular processing. Attention levels improved for 9 (100%) children in the intervention group and for 7 (78%) in the control group. Higher level domains (Peabody motor skills, Auditory Comprehension, Expressive Communication, RAPT scale, and WPPSI scores) showed mixed results. Parents reported positive changes in their child's development. Conclusion Therapeutic Listening (TL) is a feasible intervention for preterm children to improve attention levels and sensory processing skills.


Assuntos
Atenção , Transtornos Cognitivos/terapia , Transtornos de Sensação/terapia , Pré-Escolar , Humanos , Destreza Motora , Estudos Prospectivos
14.
Ir Med J ; 113(8): 157, 2020 09 10.
Artigo em Inglês | MEDLINE | ID: mdl-33730472

RESUMO

Aim COVID-19 has posed an unprecedented challenge to healthcare systems. We aimed to observe the impact on urological care delivery in an Irish university hospital. Methods Data on urological activity was prospectively collected for 3 months from March 2020. A retrospective review of the same period in 2019 was performed for control data. Results Over the 2020 study period, 356 urological admissions were recorded; a 23.1% decrease from the 2019 corresponding period(n=463). A 21.7% decrease in flexible cystoscopies was seen (162 versus 207). 125 theatre cases (36 off-site) were performed in the 2020 period, versus 151 in 2019. Emergency case load remained stable, with 69 cases in the 2020 period. The percentage of trainee-performed cases was preserved. COVID-era outpatient activity increased, to involve 559 clinic consultations compared to 439 the preceding year; a reflection of annual growth in service demand and facilitated by virtual clinic application (n=403). There were 490 instances of patients cancelling/failing to attend outpatient appointments, compared to 335 in 2019. Conclusion The Irish COVID-19 outbreak has created obstacles for urological care. Nonetheless, urgent/emergent urological cases persist. Our unit has managed this to-date with flexible adaptation of service delivery. The global challenge posed by COVID-19 will demand ongoing resourcefulness to minimise impact on patients with time-sensitive urological conditions.


Assuntos
COVID-19/terapia , Serviço Hospitalar de Emergência/tendências , Acessibilidade aos Serviços de Saúde/tendências , Doenças Urológicas/terapia , Urologia/tendências , COVID-19/epidemiologia , Humanos , Irlanda , SARS-CoV-2 , Doenças Urológicas/epidemiologia , Procedimentos Cirúrgicos Urológicos/tendências
15.
Epidemiol Infect ; 147: e285, 2019 10 07.
Artigo em Inglês | MEDLINE | ID: mdl-31587689

RESUMO

Early in a foodborne disease outbreak investigation, illness incubation periods can help focus case interviews, case definitions, clinical and environmental evaluations and predict an aetiology. Data describing incubation periods are limited. We examined foodborne disease outbreaks from laboratory-confirmed, single aetiology, enteric bacterial and viral pathogens reported to United States foodborne disease outbreak surveillance from 1998-2013. We grouped pathogens by clinical presentation and analysed the reported median incubation period among all illnesses from the implicated pathogen for each outbreak as the outbreak incubation period. Outbreaks from preformed bacterial toxins (Staphylococcus aureus, Bacillus cereus and Clostridium perfringens) had the shortest outbreak incubation periods (4-10 h medians), distinct from that of Vibrio parahaemolyticus (17 h median). Norovirus, salmonella and shigella had longer but similar outbreak incubation periods (32-45 h medians); campylobacter and Shiga toxin-producing Escherichia coli had the longest among bacteria (62-87 h medians); hepatitis A had the longest overall (672 h median). Our results can help guide diagnostic and investigative strategies early in an outbreak investigation to suggest or rule out specific etiologies or, when the pathogen is known, the likely timeframe for exposure. They also point to possible differences in pathogenesis among pathogens causing broadly similar syndromes.


Assuntos
Infecções Bacterianas/patologia , Surtos de Doenças , Doenças Transmitidas por Alimentos/patologia , Gastroenteropatias/patologia , Período de Incubação de Doenças Infecciosas , Viroses/patologia , Infecções Bacterianas/epidemiologia , Doenças Transmitidas por Alimentos/epidemiologia , Gastroenteropatias/epidemiologia , Humanos , Estados Unidos/epidemiologia , Viroses/epidemiologia
16.
Ir J Psychol Med ; 36(3): 163-167, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31524127

RESUMO

To date, Ireland has been a leading light in the provision of youth mental health services. However, cognisant of the efforts of governmental and non-governmental agencies working in youth mental health, there is much to be done. Barriers into care as well as discontinuity of care across the spectrum of services remain key challenges. This editorial provides guidance for the next stage of development in youth mental care and support that will require significant national engagement and resource investment.


Assuntos
Prestação Integrada de Cuidados de Saúde , Transtornos Mentais/terapia , Serviços de Saúde Mental/organização & administração , Adolescente , Adulto , Comportamento Cooperativo , Humanos , Irlanda , Adulto Jovem
17.
Educ Prim Care ; 30(3): 145-151, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30747043

RESUMO

The World Health Organisation policy of improving retention of rural health care practitioners recommended that continuing medical education (CME) programmes addressing their needs should be accessible and delivered where they live and work. This cross-sectional study involved a self-administered anonymous questionnaire completed by GPs attending CME small groups (CME-SGL) in Ireland. All GPs attending CME-SGL in a one-month period were invited to complete the questionnaire which examined demographic details, distance to travel to educational meetings/nearest regional hospital, barriers to accessing continuing education, whether CME-SGL met their educational needs, morale and professional isolation. A total of 1,686 responses were collected, of which 332 (19.6%) were from rural GPs. Of these, 289 (87%) reported that their educational needs were fully or mostly met by attending CME-SGL. Compared to urban doctors, rural GPs had further to travel to CME-SGL meetings, were further from the nearest regional hospital, and reported increased barriers to accessing continuing education. Rural GPs reported lower morale and greater levels of professional isolation. Despite considerable barriers to accessing continuing education, rural GPs reported that CME-SGL meets their educational needs. Future research should focus on the potential positive impact this may have on professional isolation and morale.


Assuntos
Educação Médica Continuada/métodos , Clínicos Gerais/educação , Adulto , Estudos Transversais , Feminino , Clínicos Gerais/psicologia , Humanos , Irlanda , Masculino , Pessoa de Meia-Idade , Moral , População Rural , Inquéritos e Questionários , Viagem
18.
J Parasitol ; 104(4): 429-432, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29659338

RESUMO

Human babesiosis is a tick-borne protozoal disease of increasing clinical significance in North America. Most cases in the eastern and Midwestern regions of the United States are reportedly due to Babesia microti infections. By contrast, most human infections reported in California and Washington have been attributed to a new species that was first identified in 1991 and subsequently named Babesia duncani. Although the tick vector and mammalian reservoir hosts for B. microti are well characterized, the vector and reservoir hosts for B. duncani are unknown. As a result, specific risk factors for human infections cannot be characterized. Identification of potential hosts and vector species has been hampered by the lack of specific and sensitive molecular diagnostic tools to amplify parasite DNA. To address this need, a nested PCR assay targeting the ß-tubulin gene, a well-conserved locus in piroplasm parasites with a highly variable intron region among species, was developed. The assay was evaluated by spiking tick and mammalian DNA extracts with DNA from a B. duncani isolate derived from a human patient (WA-1) as well as related Babesia spp. from Californian wildlife. This assay was highly specific, with a sensitivity of approximately 1 copy of template DNA in a background of tick DNA. At this level of detection B. duncani was detectable in larval tick samples, and the target locus allowed for visual differentiation between species by gel electrophoresis. This assay offers researchers a new tool for elucidating the natural transmission cycle of B. duncani.


Assuntos
Animais Selvagens/parasitologia , Vetores Aracnídeos/parasitologia , Babesia/isolamento & purificação , Babesiose/parasitologia , Reação em Cadeia da Polimerase/normas , Carrapatos/parasitologia , Animais , Babesia/genética , Babesiose/diagnóstico , Cricetinae , DNA de Protozoário/química , DNA de Protozoário/isolamento & purificação , Cervos , Humanos , Reação em Cadeia da Polimerase/métodos , Sensibilidade e Especificidade , Alinhamento de Sequência , Análise de Sequência de DNA , Carneiro da Montanha
19.
Yearb Med Inform ; 26(1): 214-227, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29063568

RESUMO

Background: Natural Language Processing (NLP) methods are increasingly being utilized to mine knowledge from unstructured health-related texts. Recent advances in noisy text processing techniques are enabling researchers and medical domain experts to go beyond the information encapsulated in published texts (e.g., clinical trials and systematic reviews) and structured questionnaires, and obtain perspectives from other unstructured sources such as Electronic Health Records (EHRs) and social media posts. Objectives: To review the recently published literature discussing the application of NLP techniques for mining health-related information from EHRs and social media posts. Methods: Literature review included the research published over the last five years based on searches of PubMed, conference proceedings, and the ACM Digital Library, as well as on relevant publications referenced in papers. We particularly focused on the techniques employed on EHRs and social media data. Results: A set of 62 studies involving EHRs and 87 studies involving social media matched our criteria and were included in this paper. We present the purposes of these studies, outline the key NLP contributions, and discuss the general trends observed in the field, the current state of research, and important outstanding problems. Conclusions: Over the recent years, there has been a continuing transition from lexical and rule-based systems to learning-based approaches, because of the growth of annotated data sets and advances in data science. For EHRs, publicly available annotated data is still scarce and this acts as an obstacle to research progress. On the contrary, research on social media mining has seen a rapid growth, particularly because the large amount of unlabeled data available via this resource compensates for the uncertainty inherent to the data. Effective mechanisms to filter out noise and for mapping social media expressions to standard medical concepts are crucial and latent research problems. Shared tasks and other competitive challenges have been driving factors behind the implementation of open systems, and they are likely to play an imperative role in the development of future systems.


Assuntos
Armazenamento e Recuperação da Informação , Processamento de Linguagem Natural , Mídias Sociais , Informática Aplicada à Saúde dos Consumidores , Mineração de Dados , Humanos , Armazenamento e Recuperação da Informação/métodos
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