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1.
Health Technol Assess ; 28(13): 1-162, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38512051

RESUMO

Background: Conservative therapies are recommended as initial treatment for male lower urinary tract symptoms. However, there is a lack of evidence on effectiveness and uncertainty regarding approaches to delivery. Objective: The objective was to determine whether or not a standardised and manualised care intervention delivered in primary care achieves superior symptomatic outcome for lower urinary tract symptoms to usual care. Design: This was a two-arm cluster randomised controlled trial. Setting: The trial was set in 30 NHS general practice sites in England. Participants: Participants were adult men (aged ≥ 18 years) with bothersome lower urinary tract symptoms. Interventions: Sites were randomised 1 : 1 to deliver the TReatIng Urinary symptoms in Men in Primary Health care using non-pharmacological and non-surgical interventions trial intervention or usual care to all participants. The TReatIng Urinary symptoms in Men in Primary Health care using non-pharmacological and non-surgical interventions intervention comprised a standardised advice booklet developed for the trial from the British Association of Urological Surgeons' patient information sheets, with patient and expert input. Patients were directed to relevant sections by general practice or research nurses/healthcare assistants following urinary symptom assessment, providing the manualised element. The healthcare professional provided follow-up contacts over 12 weeks to support adherence to the intervention. Main outcome measures: The primary outcome was the validated patient-reported International Prostate Symptom Score 12 months post consent. Rather than the minimal clinically important difference of 3.0 points for overall International Prostate Symptom Score, the sample size aimed to detect a difference of 2.0 points, owing to the recognised clinical impact of individual symptoms. Results: A total of 1077 men consented to the study: 524 in sites randomised to the intervention arm (n = 17) and 553 in sites randomised to the control arm (n = 13). A difference in mean International Prostate Symptom Score at 12 months was found (adjusted mean difference of -1.81 points, 95% confidence interval -2.66 to -0.95 points), with a lower score in the intervention arm, indicating less severe symptoms. Secondary outcomes of patient-reported urinary symptoms, quality of life specific to lower urinary tract symptoms and perception of lower urinary tract symptoms all showed evidence of a difference between the arms favouring the intervention. No difference was seen between the arms in the proportion of urology referrals or adverse events. In qualitative interviews, participants welcomed the intervention, describing positive effects on their symptoms, as well as on their understanding of conservative care and their attitude towards the experience of lower urinary tract symptoms. The interviews highlighted that structured, in-depth self-management is insufficiently embedded within general practitioner consultations. From an NHS perspective, mean costs and quality-adjusted life-years were similar between trial arms. The intervention arm had slightly lower mean costs (adjusted mean difference of -£29.99, 95% confidence interval -£109.84 to £22.63) than the usual-care arm, and a small gain in quality-adjusted life-years (adjusted mean difference of 0.001, 95% confidence interval -0.011 to 0.014). Conclusions: The intervention showed a small, sustained benefit for men's lower urinary tract symptoms and quality of life across a range of outcome measures in a UK primary care setting. Qualitative data showed that men highly valued the intervention. Intervention costs were marginally lower than usual-care costs. Limitations of the study included that trial participants were unmasked, with limited diversity in ethnicity and deprivation level. Additional research is needed to assess the applicability of the intervention for a more ethnically diverse population.. Trial registration: This trial is registered as ISRCTN11669964. Funding: This award was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (NIHR award ref: 16/90/03) and is published in full in Health Technology Assessment; Vol. 28, No. 13. See the NIHR Funding and Awards website for further award information.


Urinary problems among men become more common with age. Nearly one-third of all men aged > 65 years experience some urinary symptoms, which can have a substantial effect on their daily lives. Symptoms include needing to pass urine more often, urgently or during the night, and difficulties in passing urine. Men are usually diagnosed and treated by their general practitioner, and should be offered advice on controlling their symptoms themselves (e.g. lifestyle changes and exercises) before trying tablets or surgery. However, it is not known how helpful such advice is, and how general practices can effectively provide it. Thirty general practices in the West of England and Wessex took part in the study. Practices were split into two groups, with each practice providing either the TReatIng Urinary symptoms in Men in Primary Health care using non-pharmacological and non-surgical interventions care package or the practice's usual care to all of its patients in the trial. The TReatIng Urinary symptoms in Men in Primary Healthcare using nonpharmacological and non-surgical interventions care package included a booklet of advice to help control urinary symptoms, with a nurse or healthcare assistant directing men to relevant sections according to their symptoms, and providing follow-up contacts. We mainly assessed the benefits of the TReatIng Urinary symptoms in Men in Primary Healthcare using nonpharmacological and non-surgical interventions care package, compared with usual care, by using a questionnaire on urinary symptoms completed by participants. A total of 1077 men with urinary symptoms that bothered them joined the study. The main result was that men reported greater improvement in urinary symptoms with the TRIUMPH care package than with usual care, 12 months after joining the study. We also found that men receiving the TRIUMPH care package had a slight improvement in quality of life and outlook on their urinary symptoms. There was no difference between the two groups in the number of patients referred to hospital for treatment, the type, number and severity of side effects or cost to the NHS. Overall, the TRIUMPH care package was more effective in treating men with urinary symptoms than usual care by their general practice.


Assuntos
Clínicos Gerais , Sintomas do Trato Urinário Inferior , Adulto , Humanos , Masculino , Qualidade de Vida , Pessoal Técnico de Saúde , Confiabilidade dos Dados , Sintomas do Trato Urinário Inferior/terapia
2.
J Asthma ; : 1-6, 2024 Feb 16.
Artigo em Inglês | MEDLINE | ID: mdl-38323583

RESUMO

INTRODUCTION: One of the fundamental challenges of managing patients with severe asthma is treatment adherence, particularly with inhaled corticosteroids. Adherence is difficult to measure objectively and poor adherence is associated with worse outcomes. In this study, assess the ability of a 'smart' inhaler to record adherence in severe asthma patients and measure the impact of this on asthma control. METHODS: Consecutive consenting patients meeting criteria for biologics had their existing high-dose ICS/LABA//LAMA combination inhaler/s switched to mometasone/indacaterol/glycopyrronium (114/46/136). Routine clinical data, including blood eosinophils, FeNO, and ACQ-6 scores were collected at baseline and at 4 wk. Adherence was then checked on the Propeller Health app, and good adherence was defined as >80% of prescribed usage. Participants were then followed-up at 12 months to record the proportion of patients who were initiated on biologics. RESULTS: 77 patients (mean [SD] age = 50.4 [15.7] years, 67.5% female [n = 52]) participated. 71 participants were able to use the device and 65% (n = 46) of these attained good asthma control and were not initiated on biologics at 12-month follow-up. Both groups demonstrated a significant reduction in ACQ6 score at follow-up (2.81 vs. 1.92, p < 0.001 and 3.05 vs. 2.60, p < 0.001, respectively), but there was no statistically significant difference in improvement between groups. Patients with optimal adherence also demonstrated a significant reduction in median FeNO at follow-up (47 ppb vs. 40 ppb, p = 0.003). CONCLUSIONS: In severe asthma patients, 'smart' inhalers may represent an effective management tool to improve adherence and asthma control, therefore avoiding the need for patients to commence biological therapies.

3.
Wellcome Open Res ; 7: 134, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36408291

RESUMO

Background: Gastrointestinal symptoms are commonly associated with acute Plasmodium spp infection. Malaria-associated enteritis may provide an opportunity for enteric pathogens to breach the intestinal mucosa, resulting in life-threatening systemic infections. Methods: To investigate whether intestinal pathology also occurs during infection with a murine model of mild and resolving malaria, C57BL/6J mice were inoculated with recently mosquito-transmitted Plasmodium chabaudi AS. At schizogony, intestinal tissues were collected for quantification and localisation of immune mediators and malaria parasites, by PCR and immunohistochemistry. Inflammatory proteins were measured in plasma and faeces and intestinal permeability was assessed by FITC-dextran translocation after oral administration. Results: Parasitaemia peaked at approx. 1.5% at day 9 and resolved by day 14, with mice experiencing significant and transient anaemia but no weight loss. Plasma IFN-γ, TNF-α and IL10 were significantly elevated during peak infection and quantitative RT-PCR of the intestine revealed a significant increase in transcripts for ifng and cxcl10. Histological analysis revealed parasites within blood vessels of both the submucosa and intestinal villi and evidence of mild crypt hyperplasia. In faeces, concentrations of the inflammatory marker lactoferrin were significantly raised on days 9 and 11 and FITC-dextran was detected in plasma on days 7 to 14. At day 11, plasma FITC-dextran concentration was significantly positively correlated with peripheral parasitemia and faecal lactoferrin concentration. Conclusions: In summary, using a relevant, attenuated model of malaria, we have found that acute infection is associated with intestinal inflammation and increased intestinal permeability. This model can now be used to explore the mechanisms of parasite-induced intestinal inflammation and to assess the impact of increased intestinal permeability on translocation of enteropathogens.

4.
BMJ Open ; 12(3): e056524, 2022 03 23.
Artigo em Inglês | MEDLINE | ID: mdl-35321894

RESUMO

OBJECTIVES: Intensive care (ICU) survivors are at high risk of long-term physical and psychosocial problems. Unplanned hospital readmission rates are high, but the best way to triage patients for interventions is uncertain. We aimed to develop and evaluate a screening checklist to help predict subsequent readmissions or deaths. DESIGN: A checklist for complex health and social care needs (CHSCNs) was developed based on previous research, comprising six items: multimorbidity; polypharmacy; frequent previous hospitalisations; mental health issues; fragile social circumstances and impaired activities of daily living. Patients were considered to have CHSCNs if two or more were present. We prospectively screened all ICU discharges for CHSCNs for 12 months. SETTING: ICU, Royal Infirmary, Edinburgh, UK. PARTICIPANTS: ICU survivors over a 12-month period (1 June 2018 and 31 May 2019). INTERVENTIONS: None. OUTCOME MEASURE: Readmission or death in the community within 3 months postindex hospital discharge. RESULTS: Of 1174 ICU survivors, 937 were discharged alive from the hospital. Of these 253 (27%) were classified as having CHSCNs. In total 28% (266/937) patients were readmitted (N=238) or died (N=28) within 3 months. Among CHSCNs patients 45% (n=115) patients were readmitted (N=105) or died (N=10). Patients without CHSCNs had a 22% readmission (N=133) or death (N=18) rate. The checklist had: sensitivity 43% (95% CI 37% to 49%), specificity 79% (95% CI 76% to 82%), positive predictive value 45% (95% CI 41% to 51%), and negative predictive value 78% (95% CI 76% to 80%). Relative risk of readmission/death for patients with CHSCNs was 2.06 (95% CI 1.69 to 2.50), indicating a pretest to post-test probability change of 28%-45%. The checklist demonstrated high inter-rater reliability (percentage agreement ≥87% for all domains; overall kappa, 0.84). CONCLUSIONS: Early evaluation of a screening checklist for CHSCNs at ICU discharge suggests potential clinical usefulness, but this requires further evaluation as part of a care pathway.


Assuntos
Lista de Checagem , Readmissão do Paciente , Atividades Cotidianas , Cuidados Críticos , Humanos , Unidades de Terapia Intensiva , Alta do Paciente , Estudos Prospectivos , Reprodutibilidade dos Testes , Apoio Social , Sobreviventes
5.
Sci Rep ; 11(1): 19118, 2021 09 27.
Artigo em Inglês | MEDLINE | ID: mdl-34580326

RESUMO

The use of quantitative qRT-PCR assays for detection and quantification of late gametocyte stages has revealed the high transmission capacity of the human malaria parasite, Plasmodium falciparum. To understand how the parasite adjusts its transmission in response to in-host environmental conditions including antimalarials requires simultaneous quantification of early and late gametocytes. Here, we describe qRT-PCR assays that specifically detect and quantify early-stage P. falciparum gametocytes. The assays are based on expression of known early and late gametocyte genes and were developed using purified stage II and stage V gametocytes and tested in natural and controlled human infections. Genes pfpeg4 and pfg27 are specifically expressed at significant levels in early gametocytes with a limit of quantification of 190 and 390 gametocytes/mL, respectively. In infected volunteers, transcripts of pfpeg4 and pfg27 were detected shortly after the onset of blood stage infection. In natural infections, both early (pfpeg4/pfg27) and late gametocyte transcripts (pfs25) were detected in 71.2% of individuals, only early gametocyte transcripts in 12.6%, and only late gametocyte transcripts in 15.2%. The pfpeg4/pfg27 qRT-PCR assays are sensitive and specific for quantification of circulating sexually committed ring stages/early gametocytes and can be used to increase our understanding of epidemiological processes that modulate P. falciparum transmission.


Assuntos
Malária Falciparum/diagnóstico , Merozoítos/isolamento & purificação , Plasmodium falciparum/isolamento & purificação , Reação em Cadeia da Polimerase em Tempo Real , Adolescente , Adulto , Antimaláricos/uso terapêutico , Feminino , Genes de Protozoários , Voluntários Saudáveis , Interações Hospedeiro-Parasita/efeitos dos fármacos , Humanos , Limite de Detecção , Malária Falciparum/tratamento farmacológico , Malária Falciparum/parasitologia , Malária Falciparum/transmissão , Masculino , Merozoítos/genética , Pessoa de Meia-Idade , Carga Parasitária , Plasmodium falciparum/genética , Reprodutibilidade dos Testes , Adulto Jovem
6.
Front Immunol ; 11: 587756, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33329568

RESUMO

CD4+ αß T-cells are key mediators of the immune response to a first Plasmodium infection, undergoing extensive activation and splenic expansion during the acute phase of an infection. However, the clonality and clonal composition of this expansion has not previously been described. Using a comparative infection model, we sequenced the splenic CD4+ T-cell receptor repertoires generated over the time-course of a Plasmodium chabaudi infection. We show through repeat replicate experiments, single-cell RNA-seq, and analyses of independent RNA-seq data, that following a first infection - within a highly polyclonal expansion - T-effector repertoires are consistently dominated by TRBV3 gene usage. Clustering by sequence similarity, we find the same dominant clonal signature is expanded across replicates in the acute phase of an infection, revealing a conserved pathogen-specific T-cell response that is consistently a hallmark of a first infection, but not expanded upon re-challenge. Determining the host or parasite factors driving this conserved response may uncover novel immune targets for malaria therapeutic purposes.


Assuntos
Linfócitos T CD4-Positivos/imunologia , Malária/imunologia , Receptores de Antígenos de Linfócitos T alfa-beta/imunologia , Doença Aguda , Animais , Feminino , Malária/genética , Camundongos Endogâmicos C57BL , Plasmodium chabaudi , Receptores de Antígenos de Linfócitos T alfa-beta/genética , Baço/citologia , Baço/imunologia
7.
Sci Rep ; 10(1): 19802, 2020 11 13.
Artigo em Inglês | MEDLINE | ID: mdl-33188233

RESUMO

Mixed species infections of Theileria spp. are common in nature. Experimental and epidemiological data suggest that mixed species infections elicit cross-immunity that can modulate pathogenicity and disease burden at the population level. The present study examined within-host interactions, over a period of 13 months during natural infections with two Theileria spp., pathogenic (T. lestoquardi) and non-pathogenic (T. ovis), amongst a cohort of naive sheep in Oman. In the first two months after exposure to infection, a high rate of mortality was seen among sheep infected with T. lestoquardi alone. However, subsequently mixed-infections of T. lestoquardi and T. ovis prevailed, and no further death occurred. The overall densities of both parasite species were significantly higher as single infection vs mixed infection and the higher relative density of pathogenic T. lestoquardi indicated a competitive advantage over T. ovis in mixed infection. The density of both species fluctuated significantly over time, with no difference in density between the very hot (May to August) and warm season (September to April). A high degree of genotype multiplicity was seen among T. lestoquardi infections, which increased with rising parasite density. Our results illustrate a potential competitive interaction between the two ovine Theileria spp., and a substantial reduction in the risk of mortality in mixed parasite infections, indicating that T. ovis confers heterologous protection against lethal T. lestoquardi infection.


Assuntos
Doenças das Cabras/metabolismo , Doenças das Cabras/fisiopatologia , Doenças dos Ovinos/metabolismo , Doenças dos Ovinos/fisiopatologia , Theileria/patogenicidade , Theileriose/metabolismo , Theileriose/fisiopatologia , Animais , Genótipo , Cabras , Interações Hospedeiro-Parasita , Omã , Ovinos
8.
Lung ; 198(5): 767-770, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32910307

RESUMO

Cough is an important symptom of asthma. The objective assessment of chronic cough has been enhanced by the development of ambulatory cough monitoring systems. Mepolizumab has been demonstrated to reduce exacerbations in eosinophilic asthmatics long-term. We evaluate the utility of objective cough count as an outcome measure in severe eosinophilic asthma treated with mepolizumab. Consecutive, consenting patients initiated on treatment with mepolizumab had a 24-h cough count recorded at baseline; this was repeated at 1, 3 and 6 months. Asthma control questionnaire (ACQ) scores and exacerbation frequency were also recorded. The mean 24-h cough count in 11 subjects (8 females, mean age 53.6 years) was 172.4 at baseline; at 1, 3 and 6 months following initiation of treatment this decreased to 101.4, 92 and 70.8, respectively (p < 0.02). Significant improvements were also observed in mean ACQ score (3-1.6, p < 0.01) and exacerbation frequency (5.5 per year - 1.3, p < 0.01). Objective cough measurement could be used as an early, precise and clinically relevant endpoint in assessing response to asthma therapy.


Assuntos
Asma , Tosse , Monitoramento de Medicamentos/métodos , Eosinofilia , Assistência Ambulatorial/métodos , Antiasmáticos/administração & dosagem , Anticorpos Monoclonais Humanizados/administração & dosagem , Asma/sangue , Asma/epidemiologia , Asma/fisiopatologia , Asma/terapia , Terapia Biológica/métodos , Tosse/diagnóstico , Tosse/etiologia , Eosinofilia/sangue , Eosinofilia/diagnóstico , Feminino , Humanos , Masculino , Conduta do Tratamento Medicamentoso , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde/métodos , Reprodutibilidade dos Testes , Exacerbação dos Sintomas , Tempo , Reino Unido/epidemiologia
10.
Wellcome Open Res ; 5: 71, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32500098

RESUMO

The rodent parasite Plasmodium chabaudi is an important in vivo model of malaria. The ability to produce chronic infections makes it particularly useful for investigating the development of anti- Plasmodium immunity, as well as features associated with parasite virulence during both the acute and chronic phases of infection. P. chabaudi also undergoes asexual maturation (schizogony) and erythrocyte invasion in culture, so offers an experimentally-amenable in vivo to in vitro model for studying gene function and drug activity during parasite replication. To extend the usefulness of this model, we have further optimised transfection protocols and plasmids for P. chabaudi and generated stable, fluorescent lines that are free from drug-selectable marker genes. These mother-lines show the same infection dynamics as wild-type parasites throughout the lifecycle in mice and mosquitoes; furthermore, their virulence can be increased by serial blood passage and reset by mosquito transmission. We have also adapted the large-insert, linear PlasmoGEM vectors that have revolutionised the scale of experimental genetics in another rodent malaria parasite and used these to generate barcoded P. chabaudi gene-deletion and -tagging vectors for transfection in our fluorescent P. chabaudi mother-lines. This produces a tool-kit of P. chabaudi lines, vectors and transfection approaches that will be of broad utility to the research community.

11.
Adv Med Educ Pract ; 11: 379-388, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32547289

RESUMO

PURPOSE: Graduating medical students need broad clinical diagnostic reasoning skills that integrate learning across clinical specialties to deal with undifferentiated patient problems. The opportunity to acquire these skills may be limited during clinical placements on increasingly specialized hospital wards. We developed an intervention of regular general practitioner (GP) facilitated teaching in hospital placements to enable students to develop broad clinical diagnostic reasoning. The intervention was piloted, refined and delivered to a whole cohort of medical students at the start of their third year. This paper examines whether students perceived opportunities to improve their broad diagnostic clinical reasoning through our intervention. METHODS: GP-facilitated teaching sessions were delivered weekly in hospital placements to small groups of 6-8 students for 90 mins over 6 weeks. Students practiced clinical reasoning with real patient cases that they encountered on their placements. Evaluation of learning outcomes was conducted through a student questionnaire using Likert scales with free-text boxes for additional explanation. Focus groups were conducted to gain a more in-depth understanding of student perspectives. RESULTS: As high as 87% of students agreed that their broad clinical diagnostic reasoning ability had improved. Thematic analysis of the qualitative data revealed four factors supporting this improvement: practicing the hypothetico-deductive method, using real patient cases, composing student groups from different speciality placements and the breadth of the facilitators' knowledge. Students additionally reported enhanced person-centredness in terms of understanding the patient's perspective and journey. Students perceived that the added value of general practitioner facilitators lay in their broad knowledge base and knowledge of patient needs in the community. CONCLUSION: Our results suggest that medical students can develop broad clinical diagnostic reasoning skills in hospital settings through regular GP-facilitated teaching. Our approach has the advantage of working within the established curricular format of hospital placements and being deliverable at scale to whole student cohorts.

12.
ERJ Open Res ; 5(4)2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31777751

RESUMO

F ENO suppression testing is practical and feasible during assessment for biologics in severe asthma. Patients with significant F ENO suppression were less likely to be recommended biologics but saw similar reductions in exacerbation frequency. http://bit.ly/35oSoxP.

13.
Cell ; 176(1-2): 306-317.e16, 2019 01 10.
Artigo em Inglês | MEDLINE | ID: mdl-30503212

RESUMO

Trypanosome parasites control their virulence and spread by using quorum sensing (QS) to generate transmissible "stumpy forms" in their host bloodstream. However, the QS signal "stumpy induction factor" (SIF) and its reception mechanism are unknown. Although trypanosomes lack G protein-coupled receptor signaling, we have identified a surface GPR89-family protein that regulates stumpy formation. TbGPR89 is expressed on bloodstream "slender form" trypanosomes, which receive the SIF signal, and when ectopically expressed, TbGPR89 drives stumpy formation in a SIF-pathway-dependent process. Structural modeling of TbGPR89 predicts unexpected similarity to oligopeptide transporters (POT), and when expressed in bacteria, TbGPR89 transports oligopeptides. Conversely, expression of an E. coli POT in trypanosomes drives parasite differentiation, and oligopeptides promote stumpy formation in vitro. Furthermore, the expression of secreted trypanosome oligopeptidases generates a paracrine signal that accelerates stumpy formation in vivo. Peptidase-generated oligopeptide QS signals being received through TbGPR89 provides a mechanism for both trypanosome SIF production and reception.


Assuntos
Proteínas de Membrana Transportadoras/fisiologia , Percepção de Quorum/fisiologia , Trypanosoma/metabolismo , Diferenciação Celular , Sequência Conservada/genética , Proteínas de Ligação ao GTP/metabolismo , Proteínas de Membrana Transportadoras/genética , Oligopeptídeos/genética , Oligopeptídeos/fisiologia , Filogenia , Proteínas de Protozoários/metabolismo , Percepção de Quorum/genética , Transdução de Sinais , Trypanosoma/fisiologia , Trypanosoma brucei brucei/metabolismo , Tripanossomíase Africana/parasitologia , Virulência/fisiologia
14.
Clin Respir J ; 13(1): 43-49, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30506842

RESUMO

Chronic obstructive pulmonary disease (COPD) often goes unrecognised resulting in people living with the disease without a diagnosis. We investigated the characteristics, symptom burden and flow of participants in a community COPD screening initiative. Screening was undertaken during four events over 2-weeks. Participants completed symptom questionnaires and FEV-1/FEV-6 measurement. Patients with FEV-1 <80% predicted or FEV-1 ≥ 80% predicted and FEV-1/FEV-6 <0.72 were considered 'screen-positive' and invited to attend a 1-stop diagnostic clinic. Two hundred and fifty-seven individuals participated (mean ± SD age 58 ± 16, 24% current smokers). Seventy-seven were screen-positive with 27 ultimately attending a 1-stop clinic and 18 having confirmed COPD. The CAT score of participants with COPD was 19.3 ± 11.4. Two-thirds had moderate airflow obstruction on spirometry. The diagnosis rate in this screening initiative was comparable to trials of systematic case finding. Further research is required to explore the broader clinical impact of COPD screening.


Assuntos
Pesquisa Participativa Baseada na Comunidade/métodos , Pulmão/fisiopatologia , Programas de Rastreamento/métodos , Doença Pulmonar Obstrutiva Crônica/diagnóstico , Adulto , Idoso , Idoso de 80 Anos ou mais , Conscientização , Feminino , Volume Expiratório Forçado/fisiologia , Humanos , Masculino , Pessoa de Meia-Idade , Morbidade , Doença Pulmonar Obstrutiva Crônica/fisiopatologia , Testes de Função Respiratória/métodos , Fumar/efeitos adversos , Fumar/epidemiologia , Espirometria/instrumentação , Inquéritos e Questionários
15.
BMC Genomics ; 18(1): 438, 2017 06 05.
Artigo em Inglês | MEDLINE | ID: mdl-28583072

RESUMO

BACKGROUND: Vector-borne apicomplexan parasites are a major cause of mortality and morbidity to humans and livestock globally. The most important disease syndromes caused by these parasites are malaria, babesiosis and theileriosis. Strategies for control often target parasite stages in the mammalian host that cause disease, but this can result in reservoir infections that promote pathogen transmission and generate economic loss. Optimal control strategies should protect against clinical disease, block transmission and be applicable across related genera of parasites. We have used bioinformatics and transcriptomics to screen for transmission-blocking candidate antigens in the tick-borne apicomplexan parasite, Theileria annulata. RESULTS: A number of candidate antigen genes were identified which encoded amino acid domains that are conserved across vector-borne Apicomplexa (Babesia, Plasmodium and Theileria), including the Pfs48/45 6-cys domain and a novel cysteine-rich domain. Expression profiling confirmed that selected candidate genes are expressed by life cycle stages within infected ticks. Additionally, putative B cell epitopes were identified in the T. annulata gene sequences encoding the 6-cys and cysteine rich domains, in a gene encoding a putative papain-family cysteine peptidase, with similarity to the Plasmodium SERA family, and the gene encoding the T. annulata major merozoite/piroplasm surface antigen, Tams1. CONCLUSIONS: Candidate genes were identified that encode proteins with similarity to known transmission blocking candidates in related parasites, while one is a novel candidate conserved across vector-borne apicomplexans and has a potential role in the sexual phase of the life cycle. The results indicate that a 'One Health' approach could be utilised to develop a transmission-blocking strategy effective against vector-borne apicomplexan parasites of animals and humans.


Assuntos
Antígenos de Protozoários/genética , Biologia Computacional , Vetores de Doenças , Theileria annulata/imunologia , Theileria annulata/fisiologia , Sequência de Aminoácidos , Animais , Antígenos de Protozoários/química , Simulação por Computador , Sequência Conservada , Epitopos de Linfócito B/imunologia , Variação Genética , Carrapatos/parasitologia , Carrapatos/fisiologia
16.
Infect Genet Evol ; 43: 297-306, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-27166095

RESUMO

The Apicomplexan parasites, Theileria lestoquardi and Theileria annulata, the causative agents of theileriosis in small and large ruminants, are widespread in Oman, in areas where cattle, sheep and goats co-graze. Genetic analysis can provide insight into the dynamics of the parasite and the evolutionary relationship between species. Here we identified ten genetic markers (micro- and mini-satellites) spread across the T. lestoquardi genome, and confirmed their species specificity. We then genotyped T. lestoquardi in different regions in Oman. The genetic structures of T. lestoquardi populations were then compared with previously published data, for comparable panels of markers, for sympatric T. annulata isolates. In addition, we examined two antigen genes in T. annulata (Tams1 and Ta9) and their orthologues in T. lestoquardi (Tlms1 and Tl9). The genetic diversity and multiplicity of infection (MOI) were lower in T. lestoquardi (He=0.64-0.77) than T. annulata (He=0.83-0.85) in all populations. Very limited genetic differentiation was found among T. lestoquardi and T. annulata populations. In contrast, limited but significant linkage disequilibrium was observed within regional populations of each species. We identified eight T. annulata isolates in small ruminants; the diversity and MOI were lower among ovine/caprine compared to bovine. Sequence diversity of the antigen genes, Tams1 and Ta9 in T. annulata (π=0.0733 and π=0.155 respectively), was 10-fold and 3-fold higher than the orthologous Tlms1 and Tl9 in T. lestoquardi (π=0.006 and π=0.055, respectively). Despite a comparably high prevalence, T. lestoquardi has lower genetic diversity compared to sympatric T. annulata populations. There was no evidence of differentiation among populations of either species. In comparison to T. lestoquardi, T. annulata has a larger effective population size. While genetic exchange and recombination occur in both parasite species, the extent of diversity, overall, is less for T. lestoquardi. It is, therefore, likely that T. lestoquardi evolved from an ancestor of present day T. annulata and that this occurred either once or on a limited number of occasions.


Assuntos
Variação Genética , Genoma de Protozoário , Filogenia , Simpatria , Theileria annulata/genética , Theileria/genética , Theileriose/epidemiologia , Animais , Evolução Biológica , Bovinos , Marcadores Genéticos , Genótipo , Cabras/parasitologia , Especificidade de Hospedeiro , Desequilíbrio de Ligação , Repetições de Microssatélites , Omã/epidemiologia , Prevalência , Carneiro Doméstico/parasitologia , Theileria/classificação , Theileria/patogenicidade , Theileria annulata/classificação , Theileria annulata/patogenicidade , Theileriose/parasitologia , Theileriose/transmissão
17.
Psychooncology ; 25(6): 656-62, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-26403828

RESUMO

OBJECTIVE: To measure the long-term impact of surgical treatment for vulval cancer upon health-related quality of life and pelvic floor outcomes during the first year of therapy. METHODS: Prospective, longitudinal, mixed-methods study. Twenty-three women aged >18 years with a new diagnosis of vulval cancer were recruited. The EORTC QLQ C30, SF-36 and an electronic pelvic floor assessment questionnaire (ePAQ-PF) were administered at baseline (pre-treatment) and 3, 6, 9 and 12 months post-treatment. Mixed effects repeated measures models (all adjusted for age and BMI) were used to investigate changes over time and differences between cancer stage. Qualitative interviews were carried out with 11 of the women and analysed using a thematic approach. RESULTS: Mean age was 59.9 years (SD = 15.3; range = 23.8-86.6 yrs). Mean BMI was 30.0 (SD = 4.5; range = 24.4-38.2). Sixteen women had early (Stage 1 to 2B), and seven women had advanced stage disease (Stage 3 to 4B). Questionnaire scores revealed that physical and social functioning, fatigue, pain and general sex life were significantly worse at 12 months than pre-treatment (p = < 0.05). Qualitative analysis revealed multiple treatment side effects which were perceived as severe and enduring. Women with advanced vulval cancer had significantly worse SF-36 mental health scores at 12 months compared to women with early stage disease (p = 0.037). CONCLUSIONS: Surgery for vulval cancer has long-term implications which can be persistent 12 months post-treatment. High rates of morbidity relating to lymphoedema and sexual function re-enforce the need for specialist clinics to support women who suffer these complications. © 2015 The Authors. Psycho-Oncology published by John Wiley & Sons Ltd.


Assuntos
Diafragma da Pelve , Qualidade de Vida/psicologia , Sobreviventes/psicologia , Neoplasias Vulvares/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Estudos Longitudinais , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Estudos Prospectivos , Inquéritos e Questionários , Neoplasias Vulvares/cirurgia , Adulto Jovem
18.
Eur J Oncol Nurs ; 20: 191-8, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26412577

RESUMO

PURPOSE: To describe patient knowledge and awareness of long-term and late onset treatment consequences amongst colorectal cancer survivors. METHODS: Semi-structured qualitative interviews were conducted with 19 colorectal cancer survivors at least 12 months post-treatment. Interviews were audio-recorded, transcribed into NVivo 10 software and analysed using the framework method. RESULTS: Participants were aware of disease recurrence but not many other treatment consequences; change in bowel habit and impact on diet were common and had significant impact, yet many felt they had not received 'warning', considering it a gap in both information and support. Participants expressed preference to know about possible consequences early on and were willing to engage in education and support if offered. Information overload, timing of information provision and unequipped health care professionals were considered barriers to awareness. CONCLUSION: Improvement in information provision, management of expectations and support around bowel function would facilitate patient self-empowerment and could improve holistic management of health and well-being after cancer.


Assuntos
Atitude Frente a Saúde , Neoplasias Colorretais/terapia , Conhecimentos, Atitudes e Prática em Saúde , Recidiva Local de Neoplasia/prevenção & controle , Recidiva Local de Neoplasia/psicologia , Educação de Pacientes como Assunto , Sobreviventes/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Inglaterra , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pesquisa Qualitativa , Fatores de Tempo
19.
PLoS One ; 10(10): e0139581, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26469349

RESUMO

BACKGROUND: Theileriosis, caused by a number of species within the genus Theileria, is a common disease of livestock in Oman. It is a major constraint to the development of the livestock industry due to a high rate of morbidity and mortality in both cattle and sheep. Since little is currently known about the genetic diversity of the parasites causing theileriosis in Oman, the present study was designed to address this issue with specific regard to T. annulata in cattle. METHODS: Blood samples were collected from cattle from four geographically distinct regions in Oman for genetic analysis of the Theileria annulata population. Ten genetic markers (micro- and mini-satellites) representing all four chromosomes of T. annulata were applied to these samples using a combination of PCR amplification and fragment analysis. The resultant genetic data was analysed to provide a first insight into the structure of the T. annulata population in Oman. RESULTS: We applied ten micro- and mini-satellite markers to a total of 310 samples obtained from different regions (174 [56%] from Dhofar, 68 [22%] from Dhira, 44 [14.5%] from Batinah and 24 [8%] from Sharqia). A high degree of allelic diversity was observed among the four parasite populations. Expected heterozygosity for each site ranged from 0.816 to 0.854. A high multiplicity of infection was observed in individual hosts, with an average of 3.3 to 3.4 alleles per locus, in samples derived from Batinah, Dhofar and Sharqia regions. In samples from Dhira region, an average of 2.9 alleles per locus was observed. Mild but statistically significant linkage disequilibrium between pairs of markers was observed in populations from three of the four regions. In contrast, when the analysis was performed at farm level, no significant linkage disequilibrium was observed. Finally, no significant genetic differentiation was seen between the four populations, with most pair-wise FST values being less than 0.03. Slightly higher FST values (GST' = 0.075, θ = 0.07) were detected when the data for T. annulata parasites in Oman was compared with that previously generated for Turkey and Tunisia. CONCLUSION: Genetic analyses of T. annulata samples representing four geographical regions in Oman revealed a high level of genetic diversity in the parasite population. There was little evidence of genetic differentiation between parasites from different regions, and a high level of genetic diversity was maintained within each sub-population. These findings are consistent with a high parasite transmission rate and frequent movement of animals between different regions in Oman.


Assuntos
Polimorfismo Genético , Theileria annulata/genética , Animais , Bovinos , Feminino , Frequência do Gene , Loci Gênicos/genética , Marcadores Genéticos/genética , Genômica , Desequilíbrio de Ligação , Repetições de Microssatélites/genética , Repetições Minissatélites/genética , Omã , Theileria annulata/fisiologia
20.
Nurs Manag (Harrow) ; 22(6): 26-31, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26419574

RESUMO

In 2005, legislation was enacted allowing nurse practitioners (NPs) to practise in British Columbia, Canada. Although substantial human and financial resources had been dedicated to the implementation of the role, no evaluation has been conducted to date. As part of a larger multiphase, mixed-methods study design, which evaluated the integration of NPs into the British Columbia healthcare system, this article describes findings related to changes that result for patients and the implications for the healthcare system when NPs become part of the care process. Using survey and interview data, themes that emerged were patient satisfaction, access to care, and behavioural changes. Findings suggest that patients are satisfied with the care they receive from NPs and that NPs make positive changes to health behaviour.


Assuntos
Comportamentos Relacionados com a Saúde , Profissionais de Enfermagem , Satisfação do Paciente , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Colúmbia Britânica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Relações Enfermeiro-Paciente , Inquéritos e Questionários , Adulto Jovem
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