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1.
Diabet Med ; 34(8): 1074-1083, 2017 08.
Artigo em Inglês | MEDLINE | ID: mdl-28195662

RESUMO

AIMS: To consider the global provision of self-management diabetes education and training for healthcare professionals using data from the second Diabetes Attitudes, Wishes and Needs (DAWN2) study. METHODS: A total of 4785 healthcare professionals caring for people with diabetes were surveyed in 17 countries to assess diabetes healthcare provision, self-management support and training. RESULTS: Of the healthcare professionals surveyed, 33.5% received formal postgraduate training in self-management (19.3-51.4% across countries) and 62.9% received training for medical management of diabetes (47.6-70.6% variation). Training in psychological management was low (19.1%), ranging from 3.6 to 36.5%, while 20.4% (a range of 3.6-36.4% across countries) had received no postgraduate training. Overall, the greatest training need was in the management of psychological aspects of diabetes (59.5%). For some, training in a domain was positively associated with a perceived need for further training. Communication skills, for example, listening (76.9%) and encouraging questions (76.1%), were the skills most widely used. Discussion of emotional issues was limited; 31-60% of healthcare professionals across the different countries reported that this only occurred if initiated by patients. Approximately two-thirds of participants reported a need for major improvements in emotional/psychological support, but few had received training in this area, with consistent findings across professional affiliations. CONCLUSIONS: The present study shows that healthcare professionals report being insufficiently equipped to provide diabetes self-management education, including emotional and psychological aspects of diabetes, and many are not receiving postgraduate training in any part (including medical care) of the management of diabetes. It is paramount that those responsible for the continuing professional development of healthcare professionals address this skills gap.


Assuntos
Diabetes Mellitus/terapia , Educação Continuada , Saúde Global , Pessoal de Saúde/educação , Educação de Pacientes como Assunto , Autogestão , Adulto , Atitude do Pessoal de Saúde , Terapia Combinada , Efeitos Psicossociais da Doença , Ajustamento Emocional , Feminino , Pesquisas sobre Atenção à Saúde , Comunicação em Saúde , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação das Necessidades , Sistemas de Apoio Psicossocial , Autogestão/educação , Recursos Humanos
2.
Prim Care Diabetes ; 11(2): 171-177, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-27745857

RESUMO

Diabetes is an ambulatory care-sensitive condition and a high quality primary care or risk factor control can lead to a decrease in the risk of non-elective hospitalisations while ensuring continuity of care with usual primary care teams. AIMS AND METHODS: In this before and after study, eight primary care practices providing a newer enhanced diabetes model of care in Leicester UK, were compared with matched neighbouring practices with comparable demographic features providing a more expensive integrated specialist-community care diabetes service. The primary outcome at twelve months was to demonstrate equivalence in non-elective bed days. The enhanced practices had primary care physicians and nurses with an interest in diabetes who attended monthly diabetes education meetings and provided care plans and audits. The control practices provided an integrated primary-specialist care service. RESULTS: The difference between the mean change in the non-elective bed days from baseline and at follow up in core and enhanced practices was not statistically significant (mean=2.20 per 100 patients, 95% CI=-0.92 to 5.31 per 100 patients, p=0.14). The analogous change for first outpatients' attendance were 0.23 per 100 patients (95% CI=-0.47 to 0.52 per 100 patients p=0.92) and for diabetes related complications admissions was 0.30 per 100 patients (95% CI=-0.85 to 1.45 per 100 patients p=0.55). CONCLUSION: A model of enhanced primary care based diabetes care appears unlikely to increase hospitalisations, outpatients' attendance or admissions for diabetes related complications.


Assuntos
Serviços de Saúde Comunitária/organização & administração , Prestação Integrada de Cuidados de Saúde/organização & administração , Diabetes Mellitus/terapia , Atenção Primária à Saúde/organização & administração , Avaliação de Processos em Cuidados de Saúde , Adolescente , Adulto , Idoso , Diabetes Mellitus/diagnóstico , Inglaterra , Feminino , Humanos , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Admissão do Paciente , Equipe de Assistência ao Paciente/organização & administração , Avaliação de Programas e Projetos de Saúde , Fatores Socioeconômicos , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
3.
Phys Chem Chem Phys ; 17(32): 20830-9, 2015 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-26214614

RESUMO

Relative strengths of surface interaction for individual carbon atoms in acyclic and cyclic hydrocarbons adsorbed on alumina surfaces are determined using chemically resolved (13)C nuclear magnetic resonance (NMR) T1 relaxation times. The ratio of relaxation times for the adsorbed atoms T1,ads to the bulk liquid relaxation time T1,bulk provides an indication of the mobility of the atom. Hence a low T1,ads/T1,bulk ratio indicates a stronger surface interaction. The carbon atoms associated with unsaturated bonds in the molecules are seen to exhibit a larger reduction in T1 on adsorption relative to the aliphatic carbons, consistent with adsorption occurring through the carbon-carbon multiple bonds. The relaxation data are interpreted in terms of proximity of individual carbon atoms to the alumina surface and adsorption conformations are inferred. Furthermore, variations of interaction strength and molecular configuration have been explored as a function of adsorbate coverage, temperature, surface pre-treatment, and in the presence of co-adsorbates. This relaxation time analysis is appropriate for studying the behaviour of hydrocarbons adsorbed on a wide range of catalyst support and supported-metal catalyst surfaces, and offers the potential to explore such systems under realistic operating conditions when multiple chemical components are present at the surface.

4.
Diabet Med ; 31(11): 1431-8, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24798205

RESUMO

AIM: To develop and test a format of delivery of diabetes self-management education by paired professional and lay educators. METHODS: We conducted an equivalence trial with non-randomized participant allocation to a Diabetes Education and Self Management for Ongoing and Newly Diagnosed Type 2 diabetes (DESMOND) course, delivered in the standard format by two trained healthcare professional educators (to the control group) or by one trained lay educator and one professional educator (to the intervention group). A total of 260 people with Type 2 diabetes diagnosed within the previous 12 months were referred for self-management education as part of routine care and attended either a control or intervention format DESMOND course. The primary outcome measure was change in illness coherence score (derived from the Diabetes Illness Perception Questionnaire-Revised) between baseline and 4 months after attending education sessions. Secondary outcome measures included change in HbA1c level. The trial was conducted in four primary care organizations across England and Scotland. RESULTS: The 95% CI for the between-group difference in positive change in coherence scores was within the pre-set limits of equivalence (difference = 0.22, 95% CI 1.07 to 1.52). Equivalent changes related to secondary outcome measures were also observed, including equivalent reductions in HbA1c levels. CONCLUSION: Diabetes education delivered jointly by a trained lay person and a healthcare professional educator with the same educator role can provide equivalent patient benefits. This could provide a method that increases capacity, maintains quality and is cost-effective, while increasing access to self-management education.


Assuntos
Fortalecimento Institucional , Diabetes Mellitus Tipo 2/terapia , Hiperglicemia/prevenção & controle , Educação de Pacientes como Assunto , Assistência Centrada no Paciente , Autocuidado , Idoso , Estudos de Coortes , Diabetes Mellitus Tipo 2/sangue , Inglaterra , Feminino , Seguimentos , Hemoglobinas Glicadas/análise , Processos Grupais , Humanos , Masculino , Mentores , Pessoa de Meia-Idade , Cooperação do Paciente , Projetos Piloto , Escócia , Recursos Humanos
6.
Diabetes Res Clin Pract ; 93(3): 328-36, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21640424

RESUMO

AIMS: To determine whether tighter cardiovascular risk factor control with structured education in individuals with type 2 diabetes (T2DM) and microalbuminuria benefits cardiovascular risk factors. METHODS: Participants from a multiethnic population, recruited from primary care and specialist clinics were randomised to intensive intervention with structured patient (DESMOND model) education (n=94) or usual care by own health professional (n=95). PRIMARY OUTCOME: change in HbA1c at 18months. SECONDARY OUTCOMES: changes in blood pressure (BP), cholesterol, albuminuria, proportion reaching risk factor targets, modelled cardiovascular risk scores. RESULTS: Mean (SD) age and diabetes duration of participants were 61.5 (10.5) and 11.5 (9.3) years, respectively. At 18months, intensive intervention showed significant improvements in HbA1c (7.1(1.0) vs. 7.8(1.4)%, p<0.0001), systolic BP (129(16) vs. 139(17) mmHg, p<0.0001), diastolic BP (70(11) vs. 76(12) mmHg, p<0.001), total cholesterol (3.7(0.8) vs. 4.1(0.9) mmol/l, p=0.001). Moderate and severe hypoglycaemia was 11.2 vs. 29.0%; p=0.001 and 0 vs. 6.3%; p=0.07, respectively. More intensive participants achieved ≥3 risk factor targets with greater reductions in cardiovascular risk scores. CONCLUSIONS: Intensive intervention showed greater improvements in metabolic control and cardiovascular risk profile with lower rates of moderate and severe hypoglycaemia. Intensive glycaemic interventions should be underpinned by structured education promoting self-management in T2DM.


Assuntos
Albuminúria/tratamento farmacológico , Albuminúria/urina , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diabetes Mellitus Tipo 2/urina , Adulto , Idoso , Idoso de 80 Anos ou mais , Albuminúria/sangue , Anti-Hipertensivos/uso terapêutico , Aspirina/uso terapêutico , Pressão Sanguínea/efeitos dos fármacos , Colesterol/sangue , Diabetes Mellitus Tipo 2/sangue , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Hipoglicemia/sangue , Hipoglicemia/tratamento farmacológico , Hipoglicemia/urina , Hipoglicemiantes/uso terapêutico , Hipolipemiantes/uso terapêutico , Insulina/uso terapêutico , Masculino , Metformina/uso terapêutico , Pessoa de Meia-Idade , Fatores de Risco
7.
Psychol Health ; 26(3): 321-35, 2011 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20309775

RESUMO

This article explores the utility of cluster analysis of illness representations, in comparison to analysing each dimension of the individual's illness representation, to predict an individual's response to diagnosis of type 2 diabetes. Participants in a large multi-centre randomised controlled trial of a self-management education intervention for people with type 2 diabetes, completed measures of illness beliefs (coherence, timeline, impact, seriousness, personal responsibility) and depression along with HbA1c and body mass index (BMI), at baseline 4, 8 and 12 months. The results of the cluster analysis were compared with an independent qualitative study of participants' responses to diagnosis and participation in the study. The quantitative analysis of 564 participants for whom complete data were available, identified four clusters of illness representations as the most parsimonious description of the data. The mean profiles of these clusters were comparable with groups identified by the independent qualitative analysis, and predicted the trajectory of illness outcomes over the 1-year follow-up. Combining illness beliefs into discrete clusters may be more useful in understanding patterns of responding to illness than using analysis of illness beliefs dimensions independently.


Assuntos
Diabetes Mellitus Tipo 2/psicologia , Avaliação de Resultados em Cuidados de Saúde , Adaptação Psicológica , Idoso , Índice de Massa Corporal , Análise por Conglomerados , Depressão , Diabetes Mellitus Tipo 2/diagnóstico , Inglaterra , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Multicêntricos como Assunto , Prognóstico , Ensaios Clínicos Controlados Aleatórios como Assunto , Escócia , Inquéritos e Questionários
8.
Patholog Res Int ; 2010: 702472, 2010 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-21151721

RESUMO

This is a case report of a 51 year old male who was found to have an incidental left sided non-functioning adrenal mass on routine medical examination and which was confirmed by CT and MRI scans. A laparoscopic left adrenalectomy was done. On gross examination the tumour was a solitary well circumscribed solid-cystic mass with a homogenous pinkish white cut surface. On microscopic examination, the tumour was composed of variably sized tubules and fenestrated channels lined by bland cuboidal cells to epithelioid cells. There was focal extension to capsule and peri-adrenal fat. Immunohistochemically the tumour cells stained with calretinin, Cam5.2, CK7, vimentin and focally with EMA. Ki-67 fraction was <1%. They were negative for ER, CD31, CD34, Factor 8, chromogranin, synaptophysin S100 and inhibin. A diagnosis of an adenomatoid tumour as made. Adenomatoid tumours are rare benign tumours of mesothelial derivation. The adrenal gland is devoid of a mesothelial lining and the most accepted hypothesis for an adenomatoid tumour originating in the adrenal gland is derivation from mesothelial rests. As the adrenal gland is an extremely rare site of occurrence for an adenomatoid tumour, it is frequently mistaken for adrenocortical tumours or a pheochromocytoma clinically and radiologically.

9.
Diabet Med ; 27(8): 965-7, 2010 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-20653757

RESUMO

AIMS: To describe the course of depressive symptoms during the first year after diagnosis of Type 2 diabetes. METHODS: Post hoc analysis of data from a randomized controlled trial of self-management education for 824 individuals newly diagnosed with Type 2 diabetes. Participants completed the Depression scale of the Hospital Anxiety and Depression Scale after diagnosis and at 4, 8 and 12 months follow-up. Participants also completed the Problem Areas in Diabetes scale at 8 and 12 months follow-up. We present descriptive statistics on prevalence and persistence of depressive symptoms. Logistic regression is used to predict possible depression cases, and multiple regression to predict depressive symptomatology. RESULTS: The prevalence of depressive symptoms in individuals recently diagnosed with diabetes (18-22% over the year) was not significantly different from normative data for the general population (12%) in the UK. Over 20% of participants indicated some degrees of depressive symptoms over the first year of living with Type 2 diabetes; these were mostly transient episodes, with 5% (1% severe) reporting having depressive symptoms throughout the year. At 12 months post diagnosis, after controlling for baseline depressive symptoms, diabetes-specific emotional distress was predictive of depressive symptomatology. CONCLUSIONS: The increased prevalence of depressive symptoms in diabetes is not manifest until at least 1 year post diagnosis in this cohort. However, there are a significant number of people with persistent depressive symptoms in the early stages of diabetes, and diabetes-specific distress may be contributing to subsequent development of depressive symptoms in people with Type 2 diabetes.


Assuntos
Transtorno Depressivo/psicologia , Diabetes Mellitus Tipo 2/psicologia , Ansiedade , Transtorno Depressivo/diagnóstico , Diabetes Mellitus Tipo 2/diagnóstico , Feminino , Humanos , Modelos Logísticos , Masculino , Prevalência
10.
BMJ ; 336(7642): 491-5, 2008 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-18276664

RESUMO

OBJECTIVE: To evaluate the effectiveness of a structured group education programme on biomedical, psychosocial, and lifestyle measures in people with newly diagnosed type 2 diabetes. DESIGN: Multicentre cluster randomised controlled trial in primary care with randomisation at practice level. SETTING: 207 general practices in 13 primary care sites in the United Kingdom. PARTICIPANTS: 824 adults (55% men, mean age 59.5 years). INTERVENTION: A structured group education programme for six hours delivered in the community by two trained healthcare professional educators compared with usual care. MAIN OUTCOME MEASURES: Haemoglobin A(1c) levels, blood pressure, weight, blood lipid levels, smoking status, physical activity, quality of life, beliefs about illness, depression, and emotional impact of diabetes at baseline and up to 12 months. MAIN RESULTS: Haemoglobin A(1c) levels at 12 months had decreased by 1.49% in the intervention group compared with 1.21% in the control group. After adjusting for baseline and cluster, the difference was not significant: 0.05% (95% confidence interval -0.10% to 0.20%). The intervention group showed a greater weight loss: -2.98 kg (95% confidence interval -3.54 to -2.41) compared with 1.86 kg (-2.44 to -1.28), P=0.027 at 12 months. The odds of not smoking were 3.56 (95% confidence interval 1.11 to 11.45), P=0.033 higher in the intervention group at 12 months. The intervention group showed significantly greater changes in illness belief scores (P=0.001); directions of change were positive indicating greater understanding of diabetes. The intervention group had a lower depression score at 12 months: mean difference was -0.50 (95% confidence interval -0.96 to -0.04); P=0.032. A positive association was found between change in perceived personal responsibility and weight loss at 12 months (beta=0.12; P=0.008). CONCLUSION: A structured group education programme for patients with newly diagnosed type 2 diabetes resulted in greater improvements in weight loss and smoking cessation and positive improvements in beliefs about illness but no difference in haemoglobin A(1c) levels up to 12 months after diagnosis. TRIAL REGISTRATION: Current Controlled Trials ISRCTN17844016 [controlled-trials.com].


Assuntos
Diabetes Mellitus Tipo 2/prevenção & controle , Angiopatias Diabéticas/prevenção & controle , Educação de Pacientes como Assunto/métodos , Atitude Frente a Saúde , Peso Corporal , Análise por Conglomerados , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Hipoglicemiantes/uso terapêutico , Estilo de Vida , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Resultado do Tratamento
11.
Diabet Med ; 25(9): 1117-20, 2008 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19183318

RESUMO

AIMS: To determine whether differences in the amount of time educators talk during a self-management education programme relate to the degree of change in participants' reported beliefs about diabetes. METHOD: Educators trained to be facilitative and non-didactic in their approach were observed delivering the DESMOND self-management programme for individuals newly diagnosed with Type 2 diabetes. Observers used 10-s event coding to estimate the amount of time educators spoke during different sessions in the programme. Facilitative as opposed to didactic delivery was indicated by targets for levels of educator talk set for each session. Targets were based on earlier pilot work. Using the revised Illness Perceptions Questionnaire (IPQ-R) and the Diabetes Illness Representations Questionnaire (DIRQ), participants completed measures of: perceived duration of diabetes (timeline IPQ-R), understanding of diabetes (coherence IPQ-R), personal responsibility for influencing diabetes (personal responsibility IPQ-R), seriousness of diabetes (seriousness DIRQ) and impact on daily life (impact DIRQ), before and after the education programme. RESULTS: Where data from the event coding indicated educators were talking less and meeting targets for being less didactic, a greater change in reported illness beliefs of participants was seen. However, educators struggled to meet targets for most sessions of the programme. CONCLUSION: The amount of time educators talk in a self-management programme may provide a practical marker for the effectiveness of the education process, with less educator talk denoting a more facilitative/less didactic approach. This finding has informed subsequent improvements to a comprehensive quality development framework, acknowledging that educators need ongoing support to facilitate change to their normal educational style.


Assuntos
Diabetes Mellitus Tipo 2/psicologia , Conhecimentos, Atitudes e Prática em Saúde , Educação de Pacientes como Assunto/métodos , Assistência Centrada no Paciente/métodos , Autocuidado/métodos , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/prevenção & controle , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Autocuidado/psicologia
12.
Radiother Oncol ; 85(1): 98-104, 2007 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17923162

RESUMO

BACKGROUND AND PURPOSE: To evaluate the feasibility of sparing the parotid glands and surgically transferred submandibular gland (SMG) by intensity modulated radiotherapy (IMRT) in post-operative cases of head and neck cancer (HNC). MATERIALS AND METHODS: Ten patients (larynx-2, base of tongue-4, tonsil-3, and unknown primary-1; pathologic stages III-IV) who underwent SMG transfers on the side of N0 neck along with definitive surgery were selected for this study. IMRT planning was done retrospectively using helical tomotherapy approach. Planning objective was to deliver 60 Gy to PTV1 and 54 Gy to PTV2 while maintaining the mean dose to the total parotid volume (TPV) and SMG less than 26 Gy. RESULTS: The mean dose (+/-SD) to the TPV and SMG were 25+/-0.6 Gy and 23+/-1.9 Gy, respectively. The D(95) for PTV1 and PTV2 were 59.9+/-0.1 Gy and 54.9+/-0.3 Gy, respectively, satisfying our planning goal for PTV coverage. The D(99) for PTV1 and PTV2 were 58.2+/-0.7 Gy and 49.5+/-2.2 Gy, respectively, showing that sparing the salivary glands did not result in underdosing of the PTVs. CONCLUSIONS: By combining the gland transfer and IMRT, the mean dose to TPV and transferred SMG could be reduced to less than 26 Gy in post-operative patients of HNC.


Assuntos
Neoplasias de Cabeça e Pescoço/radioterapia , Glândula Parótida/efeitos da radiação , Planejamento da Radioterapia Assistida por Computador/métodos , Radioterapia de Intensidade Modulada/métodos , Glândula Submandibular/efeitos da radiação , Tomografia Computadorizada Espiral/métodos , Terapia Combinada , Neoplasias de Cabeça e Pescoço/cirurgia , Humanos , Lesões por Radiação/prevenção & controle , Estudos Retrospectivos , Glândula Submandibular/cirurgia
13.
J Laryngol Otol ; 121(9): e19, 2007 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-17610763

RESUMO

We report the first case in the world literature of laryngeal spindle cell carcinoma metastasising to the orbit. A 65-year-old woman was previously treated for T3 N0 Mx laryngeal spindle cell carcinoma, with laryngectomy and post-operative radiotherapy. Five months following this treatment, she developed proptosis, diplopia and reduced right visual acuity, secondary to an enlarging mass within the right orbit. This was biopsied, and subsequent histology confirmed a diagnosis of metastatic spindle cell carcinoma. Subsequent post-mortem examination demonstrated additional pulmonary, hepatic and cardiac metastatic disease, in the absence of any other primary tumour or locoregional disease. The radiological investigation of patients with laryngeal spindle cell carcinoma is discussed and contrasted with that of laryngeal squamous cell carcinoma.


Assuntos
Carcinoma/secundário , Neoplasias Cardíacas/secundário , Neoplasias Laríngeas/patologia , Neoplasias Orbitárias/secundário , Idoso , Evolução Fatal , Feminino , Ventrículos do Coração , Humanos , Neoplasias Hepáticas/secundário , Neoplasias Pulmonares/secundário , Neoplasias da Coluna Vertebral/secundário , Tomografia por Raios X
14.
Ir Med J ; 100(10): 624-6, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-18277732

RESUMO

This is the first needs assessment of general practitioners (GPs) in relation to early detection of cancer in the Republic of Ireland. Data was collected using focus groups with 47 GPs and a national survey of 929 GPs. Overall,74.6% of survey respondents had >10 years experience in general practice and 22.7% were single handed. Distance from the practice to the nearest hospital to which they could refer patients for assessment of suspected cancer was <5 miles for 53.3% of GPs. The principle barriers identified were not confined to early diagnosis but apply to the diagnosis of cancer at any stage. These included delayed patient presentation, lack of direct GP access to investigations, difficulty with hospital referral, lack of clear recommendations for screening, poor communication with hospital services, inequitable access to hospital services and a need for further education and clinical practice guidelines. The barriers identified have serious implications for early detection of cancer in primary care and are remedial.


Assuntos
Diagnóstico Precoce , Avaliação das Necessidades , Neoplasias/diagnóstico , Médicos de Família , Feminino , Humanos , Irlanda , Masculino , Atenção Primária à Saúde
15.
Oncogene ; 25(32): 4413-20, 2006 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-16547498

RESUMO

Aneuploidy is a fundamental principle of many cancer cells and is mostly related to defects in mitotic segregation of chromosomes. Many solid tumors as well as some preneoplastic lesions have been shown to contain polyploid chromosome numbers. The exact mechanisms behind whole-genome duplications are not known but have been linked to compromised mitotic checkpoint genes. We now report that the telomere checkpoint plays a key role for polyploidy in colon cancer cells. Telomerase suppression by a dominant-negative mutant of hTERT and consecutive telomere dysfunction in wild-type HCT116 colon cancer cells resulted in only minor stable chromosomal alterations. However, higher ploidy levels with up to 350 chromosomes were found when the cell-cycle checkpoint proteins p53 or p21 were absent. These findings indicate that telomere dysfunction in the absence of cell-cycle control may explain the high frequency of alterations in chromosome numbers found in many solid tumors.


Assuntos
Segregação de Cromossomos/genética , Mitose/genética , Neoplasias/genética , Neoplasias/patologia , Telômero/patologia , Proteína Supressora de Tumor p53/deficiência , Proteína Supressora de Tumor p53/genética , Células HCT116 , Humanos , Proteína Supressora de Tumor p53/fisiologia
16.
Anaesthesia ; 60(4): 354-9, 2005 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15766338

RESUMO

We performed a randomised, crossover, single-blind trial among 168 patients, to compare the single-use SoftSeal and LMA Unique laryngeal mask airways in spontaneously breathing adults. Size-3 and -4 laryngeal mask airways, inserted by experienced anaesthetists, performed equivalently for successful first-time placement (148 (91%) vs 155 (96%) for the SoftSeal and LMA Unique, respectively). The SoftSeal was more often rated as difficult to insert (27 (17%) vs 4 (3%); p < 0.001) and was more likely to show evidence of mucosal trauma after the first insertion (14 (10%) vs 5 (4%); OR 1.3 (95% CI 1.3-11.3); p < 0.05). The fibreoptic view of the larynx was better through the SoftSeal (vocal cords not visible in 27 (17%) vs 44 (27%); p < 0.05) and it more frequently provided a ventilation seal at 20 cmH(2)O (93 (59%) vs 62 (39%); OR 2.15 (CI 1.44-3.21); p < 0.001). In contrast to the LMA Unique(trade mark), its cuff pressure did not increase during nitrous oxide anaesthesia (median (IQR [range]) decrease 3 (- 20-23 [-40-94]) cmH(2)O vs increase of 16 (-2-39 [-54-112]) cmH(2)O; p < 0.01). Both devices were equivalent for the success of first-time insertion and performed satisfactorily clinically. There were some performance differences, but either appears suitable for airway management in spontaneously breathing patients.


Assuntos
Equipamentos Descartáveis , Máscaras Laríngeas , Adulto , Anestesia Geral/instrumentação , Anestesia Geral/métodos , Estudos Cross-Over , Feminino , Humanos , Máscaras Laríngeas/efeitos adversos , Masculino , Pessoa de Meia-Idade , Mucosa/lesões , Estatísticas não Paramétricas
17.
Ann Health Law ; 9: 73-106, inside cover, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-11430220

RESUMO

Telemedicine has the potential to transform the world of health care just as the Internet transformed the world of commerce. Ms. Daly examines two legal obstacles to expanding the use of telemedicine: licensure and liability. She defines telemedicine and discusses its common applications and significant benefits. Licensure laws and liability rules result in formidable barriers to the expanded use of telemedicine, while also failing to provide sufficient protection for consumers. Ms. Daly argues that for the benefits of telemedicine to reach those most in need, mutual recognition of licensing laws coupled with a universal standard of care is necessary.


Assuntos
Acessibilidade aos Serviços de Saúde/legislação & jurisprudência , Responsabilidade Legal , Licenciamento em Medicina , Telemedicina/legislação & jurisprudência , Redução de Custos , Humanos , Licenciamento em Medicina/legislação & jurisprudência , Imperícia/legislação & jurisprudência , Encaminhamento e Consulta , População Rural , Telemedicina/economia , Telemedicina/normas , Telemedicina/tendências , Estados Unidos
18.
Heredity (Edinb) ; 83 ( Pt 4): 378-86, 1999 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-10583539

RESUMO

The western black-legged tick, Ixodes pacificus, is a primary vector of the spirochaete, Borrelia burgdorferi, that causes Lyme disease. We used variation in a 355-bp DNA portion of the mitochondrial cytochrome oxidase III gene to assess the population structure of the tick across its range from British Columbia to southern California and east to Utah. Ixodes pacificus showed considerable haplotype diversity despite low nucleotide diversity. Maximum parsimony and isolation-by-distance analyses revealed little genetic structure except between a geographically isolated Utah locality and all other localities. Loss of mtDNA polymorphism in Utah ticks is consistent with a post-Pleistocene founder event. The pattern of genetic differentiation in the continuous part of the range of Ixodes pacificus reinforces recent recognition of the difficulties involved in using genetic frequency data to infer gene flow and migration.


Assuntos
DNA Mitocondrial/genética , Variação Genética , Ixodes/genética , Animais , Canadá , DNA Mitocondrial/análise , Complexo IV da Cadeia de Transporte de Elétrons/análise , Complexo IV da Cadeia de Transporte de Elétrons/genética , Haplótipos/genética , Filogenia , Estados Unidos
19.
Lab Invest ; 78(4): 393-400, 1998 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-9564884

RESUMO

Epithelial repair following acute lung injury involves proliferation and differentiation of existing Clara cells and type II cells. Other mechanisms of epithelial repair may be involved in particularly severe cases. We used epithelial cell-specific markers to examine changes in the mouse lung epithelium 28 days after bleomycin treatment. The spatial distribution of surfactant proteins A, B, C (SPA, SPB, SPC), and Clara cell-specific protein (CC10) mRNA was compared by in situ hybridization in serial lung sections. CC10 mRNA-containing airway cells were replaced in many areas by SPB mRNA-expressing, ciliated cells that did not contain CC10 mRNA. In distal airway regions, we observed a subpopulation of epithelial cells that appeared to express SPA, SPB, SPC, and CC10 mRNA, and speculated that they may represent a multipotential stem cell population. These cells were found in focal clusters, which suggests that they expanded from a common cell. CC10 mRNA-containing cells were seen in alveolar-like structures thought to be the result of Clara cell migration or outpocketing. Our data suggest that there are repair mechanisms involved in epithelial repair after severe injury that have not previously been described.


Assuntos
Bleomicina/toxicidade , Pulmão/efeitos dos fármacos , Uteroglobina , Animais , Células Epiteliais/efeitos dos fármacos , Células Epiteliais/metabolismo , Expressão Gênica/efeitos dos fármacos , Pulmão/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Proteínas/genética , Surfactantes Pulmonares/genética , RNA Mensageiro/análise
20.
Toxicol Ind Health ; 14(1-2): 25-39, 1998.
Artigo em Inglês | MEDLINE | ID: mdl-9460168

RESUMO

The current study assessed the effects of maternal, paternal, or combined parental consumption of Lake Ontario salmon in rats on the behavior of their offspring. Adult female Sprague-Dawley rats were put on a 30 day diet of either ground rat chow containing 30% Lake Ontario salmon (LAKE) or 30% Pacific Ocean salmon (OCEAN). These females were then mated with adult male rats similarly exposed (LAKE or OCEAN). An additional control group of males and females who were fed ground rat chow (MASH) only were also mated. These pairing combinations resulted in five offspring groups: LAKE-LAKE, LAKE-OCEAN, OCEAN-LAKE, OCEAN-OCEAN, MASH-MASH. When the offspring reached 80 days of age, they were tested for reactivity to frustrative nonreward using runway successive negative contrast, which has been repeatedly shown to be increased in adult rats fed Ontario salmon. Consistent with previous work, results showed that the behavior of the OCEAN-OCEAN rats did not differ from the MASH-MASH group, indicating that a salmon diet per se does not cause behavioral change. However, the offspring of dams who consumed Lake Ontario salmon (LAKE-LAKE and OCEAN-LAKE) showed an increased depression effect relative to controls. There was little evidence of a paternal effect. A follow-up experiment employed cross-fostering to determine the relative contribution of pre- and/or postnatal exposure to Lake Ontario salmon consumption on offspring behavior. Rat pups were cross-fostered to or from dams who consumed Lake Ontario salmon during gestation and parturition. Results from two separate replications indicated that prenatal (LAKE to OCEAN) exposure alone or postnatal (OCEAN to LAKE) exposure alone produced a large increase in successive negative contrast relative to controls (OCEAN to OCEAN). These data are strong evidence of behavioral changes produced by maternal consumption of Lake Ontario salmon in the offspring rat. Further, they indicate that either prenatal or postnatal exposure alone is sufficient to produce behavioral changes in the offspring.


Assuntos
Comportamento Animal/efeitos dos fármacos , Depressão/induzido quimicamente , Dieta , Efeitos Tardios da Exposição Pré-Natal , Salmão , Xenobióticos/efeitos adversos , Animais , Feminino , Contaminação de Alimentos , Conservação de Alimentos , Masculino , Ontário , Oceano Pacífico , Exposição Paterna , Gravidez , Ratos , Ratos Sprague-Dawley
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