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1.
Open Forum Infect Dis ; 11(3): ofae027, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38449921

RESUMO

Background: Few longitudinal studies available characterize long COVID outcomes out to 24 months, especially in people with nonsevere acute coronavirus disease 2019 (COVID-19). This study sought to prospectively characterize incidence and duration of long COVID symptoms and their association with quality of life (QoL) from 1-24 months after mild-to-moderate COVID-19 using validated tools in a diverse cohort of unvaccinated people infected with SARS-CoV-2 in 2020. Methods: At 1-3, 6, 12, 18, and 24 months post-COVID-19, 70 participants had orthostatic vital signs measured, provided blood, and completed surveys characterizing symptoms, QoL, and return to pre-COVID-19 health and activities using validated tools (FLU-PRO+, Fatigue Severity Scale, Insomnia Severity Index, General Practitioner Assessment of Cognition, Patient Health Questionnaire Depression 8-Item, Generalized Anxiety Disorder 7-Item, 36-Item Short-Form Health Survey, EuroQol EQ-5D-5L). Results: During the study period, 33% of participants experienced long COVID (had not returned to pre-COVID-19 health status and reported at least 1 symptom >90 days postinfection); 8% had not returned to their pre-COVID-19 health status 24 months postinfection. Long COVID symptoms peaked 6 months post-COVID-19, frequently causing activity limitations. Having long COVID was significantly associated with decreased QoL in multiple domains. Frequencies of orthostatic hypotension and tachycardia reflected levels reported in the general population. Within-person weight increased significantly between months 1 and 6. Long COVID was associated with pre-COVID-19 obesity and hyperlipidemia, but not with high-sensitivity C-reactive protein levels 1-3 months postinfection. Conclusions: Long COVID occurs in a significant proportion of unvaccinated people, even if the acute illness was not severe. Long COVID prevalence peaked 6-12 months post-COVID-19, and a small proportion of participants still reported not returning to their pre-COVID-19 health status 24 months post-COVID-19.

2.
medRxiv ; 2022 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-35982674

RESUMO

Little data exist on long COVID outcomes beyond one year. In a cohort enrolled with mild-moderate acute COVID-19, a wide range of symptoms manifest at 6, 12, and 18 months. Endorsing over 3 symptoms associates with poorer quality of life in 5 domains: physical, social, fatigue, pain, and general health.

3.
Am J Surg ; 222(1): 133-138, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33390246

RESUMO

BACKGROUND: Postoperative pancreatic fistulae (POPF) are a major contributing factor to pancreatoduodenectomy-associated morbidity. Established risk calculators mostly rely on subjective or intraoperative assessments. We hypothesized that various objective preoperatively determined computed tomography (CT) measurements could predict POPF as well as validated models and allow for more informed operative consent in high-risk patients. METHODS: Patients undergoing elective pancreatoduodenectomies between January 2013 and April 2018 were identified in a prospective database. Comparative statistical analyses and multivariable logistic regression models were generated to predict POPF development. Model performance was tested with receiver operating characteristics (ROC) curves. Pancreatic neck attenuation (Hounsfield units) was measured in triplicate by pancreatic protocol CT (venous phase, coronal plane) anterior to the portal vein. A pancreatic density index (PDI) was created to adjust for differences in contrast timing by dividing the mean of these measurements by the portal vein attenuation. Total areas of subcutaneous fat and skeletal muscle were calculated at the L3 vertebral level on axial CT. Pancreatic duct (PD) diameter was determined by CT. RESULTS: In the study period 220 patients had elective pancreatoduodenectomies with 35 (16%) developing a POPF of any grade. Multivariable regression analysis revealed that demographics (age, sex, and race) were not associated with POPF, yet patients resected for pancreatic adenocarcinoma or chronic pancreatitis were less likely to develop a POPF (10 vs. 24%; p = 0.004). ROC curves were created using various combinations of gland texture, body mass index, skeletal muscle index, sarcopenia, PDI, PD diameter, and subcutaneous fat area indexed for height (SFI). A model replacing gland texture with SFI and PDI (AUC 0.844) had similar predictive performance as the established model (p = 0.169). CONCLUSION: A combination of preoperative objective CT measurements can adequately predict POPF and is comparable to established models relying on subjective intraoperative variables. Validation in a larger dataset would allow for better preoperative stratification of high-risk patients and improve informed consent among this patient population.


Assuntos
Procedimentos Cirúrgicos Eletivos/efeitos adversos , Fístula Pancreática/epidemiologia , Pancreaticoduodenectomia/efeitos adversos , Complicações Pós-Operatórias/epidemiologia , Tomografia Computadorizada por Raios X/estatística & dados numéricos , Adenocarcinoma/cirurgia , Adolescente , Adulto , Idoso , Antropometria/métodos , Procedimentos Cirúrgicos Eletivos/métodos , Estudos de Viabilidade , Feminino , Humanos , Consentimento Livre e Esclarecido , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Músculo Esquelético/diagnóstico por imagem , Ductos Pancreáticos/diagnóstico por imagem , Fístula Pancreática/etiologia , Neoplasias Pancreáticas/cirurgia , Pancreatite Crônica/cirurgia , Complicações Pós-Operatórias/etiologia , Valor Preditivo dos Testes , Cuidados Pré-Operatórios/métodos , Cuidados Pré-Operatórios/estatística & dados numéricos , Estudos Prospectivos , Curva ROC , Estudos Retrospectivos , Medição de Risco/métodos , Medição de Risco/estatística & dados numéricos , Fatores de Risco , Sarcopenia/diagnóstico , Sarcopenia/epidemiologia , Gordura Subcutânea/diagnóstico por imagem , Adulto Jovem
4.
J Stroke Cerebrovasc Dis ; 29(8): 104953, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32689621

RESUMO

INTRODUCTION: Although there is evidence to suggest a high rate of cerebrovascular complications in patients with SARS-CoV-2 infection, anecdotal reports indicate a falling rate of new ischemic stroke diagnoses. We conducted an exploratory single-center analysis to estimate the change in number of new stroke diagnoses in our region, and evaluate the proximate reasons for this change during the COVID-19 pandemic at a tertiary care center in New Jersey. PATIENTS AND METHODS: A Comprehensive Stroke Center prospective cohort was retrospectively analyzed for the number of stroke admissions, demographic features, and short-term outcomes 5 months prior to 3/1/2020 (pre-COVID-19), and in the 6 weeks that followed (COVID-19 period). The primary outcome was the number of new acute stroke diagnoses before and during the COVID-19 period, as well as the potential reasons for a decline in the number of new diagnoses. RESULTS: Of the 328 included patients, 53 (16%) presented in the COVID-19 period. There was a mean fall of 38% in new stroke diagnoses (mean 1.13/day [SD 1.07] from 1.82/day [SD 1.38], p<0.01), which was related to a 59% decline in the number of daily transfers from referral centers (p<0.01), 25% fewer telestroke consultations (p=0.08), and 55% fewer patients presenting directly to our institution by private vehicle (p<0.01) and 29% fewer patients through emergency services (p=0.09). There was no significant change in the monthly number of strokes due to large vessel occlusion (LVO), however the proportion of new LVOs nearly doubled in the COVID-19 period (38% vs. 21%, p=0.01). CONCLUSIONS: The observations at our tertiary care center corroborate anecdotal reports that the number of new stroke diagnoses is falling, which seems related to a smaller proportion of patients seeking healthcare services for milder symptoms. These preliminary data warrant validation in larger, multi-center studies.


Assuntos
Infecções por Coronavirus/epidemiologia , Pneumonia Viral/epidemiologia , Acidente Vascular Cerebral/epidemiologia , Centros de Atenção Terciária , Idoso , Idoso de 80 Anos ou mais , Betacoronavirus/patogenicidade , COVID-19 , Infecções por Coronavirus/diagnóstico , Infecções por Coronavirus/virologia , Serviços Médicos de Emergência , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , New Jersey/epidemiologia , Pandemias , Aceitação pelo Paciente de Cuidados de Saúde , Transferência de Pacientes , Pneumonia Viral/diagnóstico , Pneumonia Viral/virologia , Consulta Remota , Estudos Retrospectivos , Fatores de Risco , SARS-CoV-2 , Acidente Vascular Cerebral/diagnóstico , Acidente Vascular Cerebral/terapia , Acidente Vascular Cerebral/virologia , Fatores de Tempo
5.
J Affect Disord ; 261: 187-197, 2020 01 15.
Artigo em Inglês | MEDLINE | ID: mdl-31634678

RESUMO

BACKGROUND: Depression is a common antenatal mental disorder associated with significant maternal morbidity and adverse fetal outcomes. However, there is a lack of research on the effectiveness or cost-effectiveness of psychological interventions for antenatal depression. METHODS: A parallel-group, exploratory randomised controlled trial across five hospitals. The trial compared Guided Self-Help, modified for pregnancy, plus usual care with usual care alone for pregnant women meeting DSM-IV criteria for mild-moderate depression. The trial objectives were to establish recruitment/follow-up rates, compliance and acceptability, and to provide preliminary evidence of intervention efficacy and cost-effectiveness. The primary outcome of depressive symptoms was assessed by blinded researchers using the Edinburgh Postnatal Depression Scale at 14-weeks post-randomisation. RESULTS: 620 women were screened, 114 women were eligible and 53 (46.5%) were randomised. 26 women received Guided Self-Help - 18 (69%) attending ≥4 sessions - and 27 usual care; n = 3 women were lost to follow-up (follow-up rate for primary outcome 92%). Women receiving Guided Self-Help reported fewer depressive symptoms at follow-up than women receiving usual care (adjusted effect size -0.64 (95%CI: -1.30, 0.06) p = 0.07). There were no trial-related adverse events. The cost-effectiveness acceptability curve showed the probability of Guided Self-Help being cost-effective compared with usual care ranged from 10 to 50% with a willingness-to-pay range from £0 to £50,000. CONCLUSIONS AND LIMITATIONS: Despite intense efforts we did not meet our anticipated recruitment target. However, high levels of acceptability, a lack of adverse events and a trend towards improvements in symptoms of depression post-treatment indicates this intervention is suitable for talking therapy services.


Assuntos
Depressão/terapia , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Complicações na Gravidez/terapia , Cuidado Pré-Natal/métodos , Autocuidado/métodos , Adulto , Análise Custo-Benefício , Depressão/psicologia , Feminino , Humanos , Aceitação pelo Paciente de Cuidados de Saúde/psicologia , Gravidez , Complicações na Gravidez/psicologia , Gestantes/psicologia , Cuidado Pré-Natal/economia , Autocuidado/economia , Grupos de Autoajuda , Resultado do Tratamento
6.
BMC Psychiatry ; 19(1): 225, 2019 07 23.
Artigo em Inglês | MEDLINE | ID: mdl-31337373

RESUMO

BACKGROUND: Cognitive Bias Modification (CBM) has been used successfully as a computer-based intervention in disorders such as anxiety. However, CBM to modify interpretations of ambiguous information relevant to paranoia has not yet been tested. We conducted a qualitative investigation of a novel intervention called CBM for paranoia (CBM-pa) to examine its acceptability in patients with psychosis. METHODS: Eight participants with psychosis who completed CBM-pa were identified by purposive sampling and invited for a semi-structured interview to explore the facilitators and barriers to participation, optimum form of delivery, perceived usefulness of CBM-pa and their opinions on applying CBM-pa as a computerised intervention. The interviews were transcribed and analysed using thematic analysis by researchers working in collaboration with service users. RESULTS: Themes emerged relating to participants' perception about delivery, engagement, programme understanding, factors influencing experience, perceived impact and application of CBM-pa. CBM-pa was regarded as easy, straightforward and enjoyable. It was well-accepted among those we interviewed, who understood the procedure as a psychological intervention. Patients reported that it increased their capacity for adopting alternative interpretations of emotionally ambiguous scenarios. Although participants all agreed on the test-like nature of the current CBM-pa format, they considered that taking part in sessions had improved their overall wellbeing. Most of them valued the computer-based interface of CBM-pa but favoured the idea of combining CBM-pa with some form of human interaction. CONCLUSIONS: CBM-pa is an acceptable intervention that was well-received by our sample of patients with paranoia. The current findings reflect positively on the acceptability and experience of CBM-pa in the target population. Patient opinion supports further development and testing of CBM-pa as a possible adjunct treatment for paranoia. TRIAL REGISTRATION: Current Controlled Trials ISRCTN: 90749868 . Retrospectively registered on 12 May 2016.


Assuntos
Terapia Cognitivo-Comportamental/métodos , Transtornos Paranoides/terapia , Aceitação pelo Paciente de Cuidados de Saúde/psicologia , Transtornos Psicóticos/terapia , Adulto , Feminino , Humanos , Masculino , Transtornos Paranoides/psicologia , Transtornos Psicóticos/psicologia , Pesquisa Qualitativa , Interface Usuário-Computador
7.
Br J Psychiatry ; 212(3): 131-133, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29486823

RESUMO

Psychotic major depression is an under-researched and under-identified disorder. We highlight the major challenges both in clinical practice and in conducting research with people with this disorder. We also suggest which major issues need addressing to move treatment and knowledge of this disorder forward. Declaration of interest M.H. and A.H.Y. both report grants from the National Institute for Health Research (NIHR).


Assuntos
Transtorno Depressivo Maior/fisiopatologia , Transtornos Psicóticos/fisiopatologia , Pesquisa Biomédica , Transtorno Depressivo Maior/diagnóstico , Transtorno Depressivo Maior/terapia , Humanos , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/terapia
8.
Schizophr Res ; 199: 341-345, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-29571751

RESUMO

OBJECTIVE: To describe the characteristics of individuals with early sustained recovery following first episode psychosis. METHODS: Individuals with a first episode psychosis were followed-up for ten years. Comparisons were made between those with Early Sustained Recovery and those with Other Course types. RESULTS: Of 345 individuals, n=43 (12.5%) had Early Sustained Recovery. They were more likely than those with Other Course types to be female (OR=2.45; 95% CI: 1.25-4.81); employed (OR=2.39; 95% CI: 1.22-4.69); in a relationship (OR=2.68; 95% CI: 1.35-5.32); have a short DUP (OR=2.86; 95% CI: 1.37-5.88); and have a diagnosis other than schizophrenia, particularly mania (OR=6.39; 95% CI: 2.52-16.18) or brief psychosis (OR=3.64; 95% CI: 1.10-12.10). CONCLUSIONS: Sustained recovery from first episode psychosis occurs in a minority.


Assuntos
Transtornos Psicóticos/terapia , Esquizofrenia/terapia , Adolescente , Adulto , Progressão da Doença , Feminino , Seguimentos , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Recuperação de Função Fisiológica , Fatores de Risco , Fatores Sexuais , Fatores Socioeconômicos , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
9.
Psychol Med ; 47(11): 1981-1989, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28395674

RESUMO

BACKGROUND: We examined longitudinally the course and predictors of treatment resistance in a large cohort of first-episode psychosis (FEP) patients from initiation of antipsychotic treatment. We hypothesized that antipsychotic treatment resistance is: (a) present at illness onset; and (b) differentially associated with clinical and demographic factors. METHOD: The study sample comprised 323 FEP patients who were studied at first contact and at 10-year follow-up. We collated clinical information on severity of symptoms, antipsychotic medication and treatment adherence during the follow-up period to determine the presence, course and predictors of treatment resistance. RESULTS: From the 23% of the patients, who were treatment resistant, 84% were treatment resistant from illness onset. Multivariable regression analysis revealed that diagnosis of schizophrenia, negative symptoms, younger age at onset, and longer duration of untreated psychosis predicted treatment resistance from illness onset. CONCLUSIONS: The striking majority of treatment-resistant patients do not respond to first-line antipsychotic treatment even at time of FEP. Clinicians must be alert to this subgroup of patients and consider clozapine treatment as early as possible during the first presentation of psychosis.


Assuntos
Antipsicóticos/farmacologia , Resistência a Medicamentos , Transtornos Psicóticos , Esquizofrenia , Adolescente , Adulto , Resistência a Medicamentos/fisiologia , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Prevalência , Transtornos Psicóticos/tratamento farmacológico , Transtornos Psicóticos/epidemiologia , Transtornos Psicóticos/fisiopatologia , Esquizofrenia/tratamento farmacológico , Esquizofrenia/epidemiologia , Esquizofrenia/fisiopatologia , Reino Unido/epidemiologia , Adulto Jovem
10.
Chem Commun (Camb) ; 53(53): 7234-7237, 2017 Jun 29.
Artigo em Inglês | MEDLINE | ID: mdl-28352901

RESUMO

Chemical genetics has arisen as a powerful approach for identifying novel anti-cancer agents. However, a major bottleneck of this approach is identifying the targets of lead compounds that arise from screens. Here, we coupled the synthesis and screening of fragment-based cysteine-reactive covalent ligands with activity-based protein profiling (ABPP) chemoproteomic approaches to identify compounds that impair colorectal cancer pathogenicity and map the druggable hotspots targeted by these hits. Through this coupled approach, we discovered a cysteine-reactive acrylamide DKM 3-30 that significantly impaired colorectal cancer cell pathogenicity through targeting C1101 on reticulon 4 (RTN4). While little is known about the role of RTN4 in colorectal cancer, this protein has been established as a critical mediator of endoplasmic reticulum tubular network formation. We show here that covalent modification of C1101 on RTN4 by DKM 3-30 or genetic knockdown of RTN4 impairs endoplasmic reticulum and nuclear envelope morphology as well as colorectal cancer pathogenicity. We thus put forth RTN4 as a potential novel colorectal cancer therapeutic target and reveal a unique druggable hotspot within RTN4 that can be targeted by covalent ligands to impair colorectal cancer pathogenicity. Our results underscore the utility of coupling the screening of fragment-based covalent ligands with isoTOP-ABPP platforms for mining the proteome for novel druggable nodes that can be targeted for cancer therapy.


Assuntos
Acrilamida/farmacologia , Antineoplásicos/farmacologia , Neoplasias Colorretais/tratamento farmacológico , Cisteína/química , Retículo Endoplasmático/efeitos dos fármacos , Proteínas Nogo/antagonistas & inibidores , Proteômica , Acrilamida/química , Antineoplásicos/química , Neoplasias Colorretais/metabolismo , Neoplasias Colorretais/patologia , Retículo Endoplasmático/metabolismo , Humanos , Ligantes , Proteínas Nogo/genética , Proteínas Nogo/metabolismo , Membrana Nuclear/efeitos dos fármacos , Membrana Nuclear/metabolismo
11.
Epidemiol Psychiatr Sci ; 26(3): 234-244, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-27641074

RESUMO

BACKGROUND: Although financing represents a critical component of health system strengthening and also a defining concern of efforts to move towards universal health coverage, many countries lack the tools and capacity to plan effectively for service scale-up. As part of a multi-country collaborative study (the Emerald project), we set out to develop, test and apply a fully integrated health systems resource planning and health impact tool for mental, neurological and substance use (MNS) disorders. METHODS: A new module of the existing UN strategic planning OneHealth Tool was developed, which identifies health system resources required to scale-up a range of specified interventions for MNS disorders and also projects expected health gains at the population level. We conducted local capacity-building in its use, as well as stakeholder consultations, then tested and calibrated all model parameters, and applied the tool to three priority mental and neurological disorders (psychosis, depression and epilepsy) in six low- and middle-income countries. RESULTS: Resource needs for scaling-up mental health services to reach desired coverage goals are substantial compared with the current allocation of resources in the six represented countries but are not large in absolute terms. In four of the Emerald study countries (Ethiopia, India, Nepal and Uganda), the cost of delivering key interventions for psychosis, depression and epilepsy at existing treatment coverage is estimated at US$ 0.06-0.33 per capita of total population per year (in Nigeria and South Africa it is US$ 1.36-1.92). By comparison, the projected cost per capita at target levels of coverage approaches US$ 5 per capita in Nigeria and South Africa, and ranges from US$ 0.14-1.27 in the other four countries. Implementation of such a package of care at target levels of coverage is expected to yield between 291 and 947 healthy life years per one million populations, which represents a substantial health gain for the currently neglected and underserved sub-populations suffering from psychosis, depression and epilepsy. CONCLUSIONS: This newly developed and validated module of OneHealth tool can be used, especially within the context of integrated health planning at the national level, to generate contextualised estimates of the resource needs, costs and health impacts of scaled-up mental health service delivery.


Assuntos
Atenção à Saúde , Depressão/terapia , Epilepsia/terapia , Recursos em Saúde , Serviços de Saúde Mental/organização & administração , Transtornos Psicóticos/terapia , África Subsaariana , Ásia , Atenção à Saúde/métodos , Atenção à Saúde/organização & administração , Custos de Cuidados de Saúde , Pesquisa sobre Serviços de Saúde , Humanos , Planejamento Estratégico
12.
Schizophr Res ; 176(2-3): 417-422, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27236408

RESUMO

We aimed to investigate long-term outcomes in psychotic major depression patients compared to schizophrenia and bipolar/manic psychosis patients, in an incidence sample, while accounting for diagnostic change. Based on Aetiology and Ethnicity in Schizophrenia and Other Psychoses (ÆSOP and ÆSOP-10), a first episode psychosis cohort was followed-up 10years after first presentation. The Schedules for Clinical Assessment in Neuropsychiatry, WHO Life Chart and Global Assessment of Functioning were used to assess clinical, social and service use outcomes. Seventy-two PMD patients, 218 schizophrenia patients and 70 psychotic bipolar disorder/mania patients were identified at baseline. Differences in outcome between PMD and bipolar patients based on baseline and lifetime diagnosis were minimal. Differences in clinical, social and service use outcomes between PMD and schizophrenia were more substantial with PMD patients showing better outcomes on most variables. However, there was some weak evidence (albeit not quite statistically significant at p<0.05) based on lifetime diagnoses that PMD patients were more likely to attempt suicide (OR 2.31, CI 0.98-5.42, p0.055) and self-harm (OR 2.34, CI 0.97-5.68, p0.060). PMD patients have better social and service use outcomes compared to people with schizophrenia, but may be more likely to attempt suicide or self-harm. This unique profile is important for clinicians to consider in any risk assessment.


Assuntos
Transtorno Bipolar/epidemiologia , Transtorno Depressivo Maior/complicações , Transtorno Depressivo Maior/epidemiologia , Transtornos Psicóticos/complicações , Transtornos Psicóticos/epidemiologia , Esquizofrenia/epidemiologia , Adulto , Transtorno Bipolar/terapia , Transtorno Depressivo Maior/terapia , Emprego , Feminino , Seguimentos , Humanos , Incidência , Masculino , Prisões , Transtornos Psicóticos/terapia , Análise de Regressão , Esquizofrenia/terapia , Comportamento Autodestrutivo/epidemiologia , Isolamento Social , Resultado do Tratamento , Adulto Jovem
13.
Oncogene ; 35(7): 833-45, 2016 Feb 18.
Artigo em Inglês | MEDLINE | ID: mdl-25961927

RESUMO

The primary aim of this study was to evaluate the antitumor efficacy of the bromodomain inhibitor JQ1 in pancreatic ductal adenocarcinoma (PDAC) patient-derived xenograft (tumorgraft) models. A secondary aim of the study was to evaluate whether JQ1 decreases expression of the oncogene c-Myc in PDAC tumors, as has been reported for other tumor types. We used five PDAC tumorgraft models that retain specific characteristics of tumors of origin to evaluate the antitumor efficacy of JQ1. Tumor-bearing mice were treated with JQ1 (50 mg/kg daily for 21 or 28 days). Expression analyses were performed with tumors harvested from host mice after treatment with JQ1 or vehicle control. An nCounter PanCancer Pathways Panel (NanoString Technologies) of 230 cancer-related genes was used to identify gene products affected by JQ1. Quantitative RT-PCR, immunohistochemistry and immunoblots were carried out to confirm that changes in RNA expression reflected changes in protein expression. JQ1 inhibited the growth of all five tumorgraft models (P<0.05), each of which harbors a KRAS mutation; but induced no consistent change in expression of c-Myc protein. Expression profiling identified CDC25B, a regulator of cell cycle progression, as one of the three RNA species (TIMP3, LMO2 and CDC25B) downregulated by JQ1 (P<0.05). Inhibition of tumor progression was more closely related to decreased expression of nuclear CDC25B than to changes in c-Myc expression. JQ1 and other agents that inhibit the function of proteins with bromodomains merit further investigation for treating PDAC tumors. Work is ongoing in our laboratory to identify effective drug combinations that include JQ1.


Assuntos
Antineoplásicos/farmacologia , Azepinas/farmacologia , Carcinoma Ductal Pancreático/patologia , Neoplasias Pancreáticas/patologia , Triazóis/farmacologia , Animais , Apoptose/efeitos dos fármacos , Expressão Gênica/efeitos dos fármacos , Genes myc , Humanos , Immunoblotting , Imuno-Histoquímica , Camundongos , Camundongos SCID , Proteínas do Tecido Nervoso/antagonistas & inibidores , Análise de Sequência com Séries de Oligonucleotídeos , Reação em Cadeia da Polimerase , Receptores de Superfície Celular/antagonistas & inibidores , Ensaios Antitumorais Modelo de Xenoenxerto
14.
Soc Psychiatry Psychiatr Epidemiol ; 51(2): 233-45, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26520449

RESUMO

AIMS: Few studies have investigated risk factors for psychotic major depression (PMD). We aimed to investigate the biological and psychosocial risk factors associated with PMD compared with other psychotic disorders. METHODS: Based on the aetiology and ethnicity in schizophrenia and other psychoses (ÆSOP) study, we used a case-control study to identify and recruit, at baseline and 10-year follow-up, all first episode cases of psychosis, presenting for the first time to specialist mental health services in defined catchment areas in the UK. Population-based controls were recruited from the same areas. Data were collected on: sociodemographics; social isolation; childhood adversity; life events; minor physical anomalies; and neurological soft signs. RESULTS: Living alone (aOR = 2.26, CI = 1.21-4.23), basic level qualification (aOR = 2.89, CI = 1.08-7.74), being unemployed (aOR = 2.12, CI = 1.13-3.96), having contact with friends less than monthly (aOR = 4.24, CI = 1.62-11.14), having no close confidants (aOR = 4.71, CI = 2.08-10.68), having experienced childhood adversity (aOR = 2.57, CI = 1.02-6.44), family history of mental illness (aOR = 10.68, CI = 5.06-22.52), family history of psychosis (aOR = 12.85, CI = 5.24-31.51), and having more neurological soft signs (aOR = 1.15, CI = 1.07-1.24) were all associated with a follow-up diagnosis of PMD and schizophrenia. Few variables associated with PMD were also associated with a diagnosis of bipolar disorder. Minor physical anomalies were associated with a follow-up diagnosis of schizophrenia and bipolar disorder, but not PMD. CONCLUSIONS: Risk factors associated with PMD appear to overlap with those for schizophrenia, but less so for bipolar disorder. Future work on the differential aetiology of PMD, from other psychoses is needed to find the 'specifier' between PMD and other psychoses. Future research on aetiology in PMD, and perhaps other psychoses, should account for diagnostic change.


Assuntos
Transtorno Depressivo Maior/epidemiologia , Transtornos Psicóticos/epidemiologia , Adulto , Transtorno Bipolar/epidemiologia , Estudos de Casos e Controles , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Esquizofrenia/epidemiologia , Reino Unido/epidemiologia , Adulto Jovem
15.
Psychol Med ; 45(13): 2757-69, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25936425

RESUMO

BACKGROUND: A lack of an aetiologically based nosology classification has contributed to instability in psychiatric diagnoses over time. This study aimed to examine the diagnostic stability of psychosis diagnoses using data from an incidence sample of psychosis cases, followed up after 10 years and to examine those baseline variables which were associated with diagnostic change. METHOD: Data were examined from the ÆSOP and ÆSOP-10 studies, an incidence and follow-up study, respectively, of a population-based cohort of first-episode psychosis cases from two sites. Diagnosis was assigned using ICD-10 and DSM-IV-TR. Diagnostic change was examined using prospective and retrospective consistency. Baseline variables associated with change were examined using logistic regression and likelihood ratio tests. RESULTS: Slightly more (59.6%) cases had the same baseline and lifetime ICD-10 diagnosis compared with DSM-IV-TR (55.3%), but prospective and retrospective consistency was similar. Schizophrenia, psychotic bipolar disorder and drug-induced psychosis were more prospectively consistent than other diagnoses. A substantial number of cases with other diagnoses at baseline (ICD-10, n = 61; DSM-IV-TR, n = 76) were classified as having schizophrenia at 10 years. Many variables were associated with change to schizophrenia but few with overall change in diagnosis. CONCLUSIONS: Diagnoses other than schizophrenia should to be regarded as potentially provisional.


Assuntos
Transtorno Bipolar/diagnóstico , Manual Diagnóstico e Estatístico de Transtornos Mentais , Classificação Internacional de Doenças/normas , Transtornos Psicóticos/diagnóstico , Esquizofrenia/diagnóstico , Adulto , Estudos de Coortes , Diagnóstico Diferencial , Feminino , Humanos , Modelos Logísticos , Masculino , Adulto Jovem
16.
Psychol Med ; 44(13): 2713-26, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25066181

RESUMO

BACKGROUND: Studies of the long-term course and outcome of psychoses tend to focus on cohorts of prevalent cases. Such studies bias samples towards those with poor outcomes, which may distort our understanding of prognosis. Long-term follow-up studies of epidemiologically robust first-episode samples are rare. METHOD: AESOP-10 is a 10-year follow-up study of 557 individuals with a first episode of psychosis initially identified in two areas in the UK (South East London and Nottingham). Detailed information was collated on course and outcome in three domains (clinical, social and service use) from case records, informants and follow-up interviews. RESULTS: At follow-up, of 532 incident cases identified, at baseline 37 (7%) had died, 29 (6%) had emigrated and eight (2%) were excluded. Of the remaining 458, 412 (90%) were traced and some information on follow-up was collated for 387 (85%). Most cases (265, 77%) experienced at least one period of sustained remission; at follow-up, 141 (46%) had been symptom free for at least 2 years. A majority (208, 72%) of cases had been employed for less than 25% of the follow-up period. The median number of hospital admissions, including at first presentation, was 2 [interquartile range (IQR) 1-4]; a majority (299, 88%) were admitted a least once and a minority (21, 6%) had 10 or more admissions. Overall, outcomes were worse for those with a non-affective diagnosis, for men and for those from South East London. CONCLUSIONS: Sustained periods of symptom remission are usual following first presentation to mental health services for psychosis, including for those with a non-affective disorder; almost half recover.


Assuntos
Progressão da Doença , Hospitalização/estatística & dados numéricos , Transtornos Psicóticos/epidemiologia , Adulto , Inglaterra/epidemiologia , Feminino , Seguimentos , Humanos , Incidência , Londres/epidemiologia , Masculino , Pessoa de Meia-Idade , Transtornos Psicóticos/mortalidade , Fatores Sexuais
17.
Psychol Med ; 44(6): 1279-91, 2014 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23866084

RESUMO

BACKGROUND: Hippocampal pathology has been proposed to underlie clinical, functional and cognitive impairments in schizophrenia. The hippocampus is a highly plastic brain region; examining change in volume, or change bilaterally, over time, can advance understanding of the substrate of recovery in psychosis. METHOD: Magnetic resonance imaging and outcome data were collected at baseline and 6-year follow-up in 42 first-episode psychosis subjects and 32 matched controls, to investigate whether poorer outcomes are associated with loss of global matter and hippocampal volumes. Bilateral hippocampal increase (BHI) over time, as a marker of hippocampal plasticity was hypothesized to be associated with better outcomes. Regression analyses were performed on: (i) clinical and functional outcomes with grey matter volume change and BHI as predictor variables; and (ii) cognitive outcome with BHI as predictor. RESULTS: BHI was present in 29% of psychosis participants. There was no significant grey matter loss over time in either patient or control groups. Less severe illness course and lesser symptom severity were associated with BHI, but not with grey matter change. Employment and global function were associated with BHI and with less grey matter loss. Superior delayed verbal recall was also associated with BHI. CONCLUSIONS: BHI occurs in a minority of patients following their first psychotic episode and is associated with good outcome across clinical, functional and cognitive domains.


Assuntos
Hipocampo/patologia , Plasticidade Neuronal/fisiologia , Transtornos Psicóticos/patologia , Adolescente , Adulto , Feminino , Seguimentos , Lateralidade Funcional/fisiologia , Hipocampo/fisiopatologia , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Prognóstico , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/fisiopatologia , Adulto Jovem
18.
Br J Cancer ; 105(4): 523-33, 2011 Aug 09.
Artigo em Inglês | MEDLINE | ID: mdl-21792199

RESUMO

BACKGROUND: We sought to investigate the role of ErbB3-mediated signalling on the interaction between pancreatic cancer-associated fibroblasts (CAF) and carcinoma cells in an effort to disrupt tumourigenic pancreatic ductal adenocarcinoma (PDAC) stromal-epithelial cross-communication. METHODS: Primary CAF cultures were established from human PDAC surgical specimens. AsPC-1 pancreatic cancer cell murine subcutaneous xenografts were developed in the presence and absence of CAF and were subsequently treated with epidermal growth factor receptor (EGFR) inhibitors (erlotinib) and ErbB3 inhibitors (MM-121, monoclonal ErbB3 antibody). RESULTS: Cancer-associated fibroblasts were found to secrete neuregulin-1 (NRG-1), which promoted proliferation via phosphorylation of ErbB3 and AKT in AsPC-1 PDAC cells. This signalling cascade was effectively inhibited both in vitro and in vivo by specific ErbB3 blockade with MM-121, with greater degree of tumourigenesis inhibition when combined with erlotinib. The CAF-AsPC-1 pancreatic cancer xenografts reached significantly greater tumour volume than those xenografts lacking CAF and were resistant to the anti-tumour effects of EGFR inhibition with erlotinib. CONCLUSION: Cancer-associated fibroblasts-derived NRG-1 promote PDAC tumourigenesis via ErbB3-AKT signalling and overcomes single-agent EGFR inhibition. Disruption of this stromally mediated tumourigenic mechanism is best obtained through combined EGFR-ErbB3 inhibition with both erlotinib and MM-121. We have identified the NRG-1/ErbB3 axis as an attractive molecular target for the interruption of tumourigenic stromal-epithelial interactions within the PDAC microenvironment.


Assuntos
Antineoplásicos/farmacologia , Carcinoma Ductal Pancreático/metabolismo , Receptores ErbB/antagonistas & inibidores , Fibroblastos/metabolismo , Neuregulina-1/metabolismo , Neoplasias Pancreáticas/metabolismo , Quinazolinas/farmacologia , Receptor ErbB-3/antagonistas & inibidores , Receptor ErbB-3/metabolismo , Animais , Western Blotting , Carcinoma Ductal Pancreático/tratamento farmacológico , Comunicação Celular , Proliferação de Células/efeitos dos fármacos , Modelos Animais de Doenças , Cloridrato de Erlotinib , Feminino , Humanos , Imuno-Histoquímica , Camundongos , Camundongos SCID , Neoplasias Pancreáticas/tratamento farmacológico , Fosforilação , Proteínas Proto-Oncogênicas c-akt/metabolismo , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Transdução de Sinais/efeitos dos fármacos , Transplante Heterólogo
19.
Am Surg ; 69(12): 1067-71, 2003 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-14700292

RESUMO

Current surgical treatments for hepatocellular carcinoma (HCC) include radio-frequency ablation (RFA), resection, and orthotropic liver transplant (OLT). RFA is particularly attractive in these high-risk patients because surgery is associated with high mortality and there is a relative scarcity of organs available for those in need of transplants. This study was performed to evaluate the management of cirrhotic patients with HCC undergoing RFA at a single Western institution. A retrospective study from March 1999 to June 2002 was performed to evaluate the clinicopathologic and treatment-related variables in cirrhotic patients with HCC. Forty-nine lesions in 26 patients with HCC and cirrhosis underwent RFA. Data was analyzed for safety and overall survival as the main endpoints. The mean age was 60.4 +/- 11 years, 19 patients were male, 5 had hepatitis B virus, and 19 had hepatitis C virus. The Child classification was 26 per cent, 39 per cent, and 35 per cent for A, B, and C; the number of lesions was 1 in 62 per cent, 2 in 23 per cent, and more than 2 in 15 per cent. The approach was laparoscopic in 58 per cent, percutaneous in 15 per cent, and open in 27 per cent. There were no mortalities and only 1 complication. Average hospital stay was 2.7 +/- 2 days. Subsequent to RFA, 9 patients underwent an OLT within a median of 4.1 months. The median follow-up of the whole group was 13 months and the disease-free survival 9.3 months. Tumor recurrence was identified in 3 previously ablated lesions, nonablated liver in 11, and as pulmonary metastases in 3. Overall survival (P = 0.03) was prolonged for those treated with RFA + OLT over RFA alone. We conclude that RFA is a safe ablative technique in high-risk cirrhotic patients with HCC. This technique may provide a bridge to OLT; however, it remains to be proven whether it prolongs survival in those who do not undergo OLT.


Assuntos
Carcinoma Hepatocelular/cirurgia , Ablação por Cateter , Neoplasias Hepáticas/cirurgia , Adulto , Idoso , Carcinoma Hepatocelular/complicações , Carcinoma Hepatocelular/mortalidade , Feminino , Humanos , Cirrose Hepática/complicações , Neoplasias Hepáticas/complicações , Neoplasias Hepáticas/mortalidade , Masculino , Pessoa de Meia-Idade
20.
Ann Surg Oncol ; 8(9): 716-9, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11597012

RESUMO

BACKGROUND: Selective sentinel lymphadenectomy has gained widespread acceptance for staging of melanomas arising in the trunk and extremities, but the complex lymphatic drainage of the head and neck area has limited its application in this area. METHODS: We performed a retrospective analysis of patients who underwent selective sentinel lymphadenectomy for cutaneous melanoma of the head and neck at the University of Alabama at Birmingham from 1997 through 2000, by using a standard technique of preoperative lymphoscintigram and biopsy guided with blue dye injection and a handheld gamma probe. Complete lymph node dissection was recommended only for tumor-positive sentinel lymph nodes (SLNs). Survival curves were constructed with the Kaplan-Meier method. Fisher's exact test was used for comparisons. Significance was defined as P < .05. RESULTS: Thirty-eight patients underwent selective sentinel lymphadenectomy with the standard technique during the study period. A majority (82%) of patients were men with a median age of 55 years. The most common site of the primary tumor was the face (44%), followed by the scalp (24%). Mean tumor thickness was 2.5 mm. The sentinel node was identified during surgery in 35 patients (92%). Before the use of the handheld gamma probe, the identification rate of the SLN was only 56%. A single SLN was identified in 53% of cases. The incidence of metastases in SLN was 11.4%. With a mean follow-up of 17 months, the actuarial 3-year overall survival was 92%. The accuracy of the selective sentinel lymphadenectomy in this series was 80%. CONCLUSIONS: Selective sentinel lymphadenectomy in the head and neck region is a technically demanding procedure, but the combined use of blue dye and gamma-probe radiolocalization can be a reliable method of staging regional lymph nodes and determining the need for elective lymphadenectomy.


Assuntos
Neoplasias de Cabeça e Pescoço/patologia , Melanoma/patologia , Biópsia de Linfonodo Sentinela , Neoplasias Cutâneas/patologia , Adulto , Idoso , Feminino , Seguimentos , Neoplasias de Cabeça e Pescoço/diagnóstico por imagem , Humanos , Masculino , Melanoma/diagnóstico por imagem , Melanoma/secundário , Azul de Metileno , Pessoa de Meia-Idade , Cintilografia , Estudos Retrospectivos , Neoplasias Cutâneas/diagnóstico por imagem , Análise de Sobrevida
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