Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 356
Filtrar
1.
Clin Radiol ; 77(10): e776-e782, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35940927

RESUMO

AIM: To compare targeted and global liver stiffness measured by magnetic resonance elastography (MRE) with liver biopsy in patients who have undergone the Fontan procedure, and to assess the relationship between liver stiffness and fibrosis stage. MATERIALS AND METHODS: Targeted and global liver stiffness was compared with a quantification of liver fibrosis measured by percentage of Sirius Red (%SR) staining of biopsy samples. MRE values were compared with three other biopsy-scoring methods: Ishak, Scheuer/Ludwig-Batts/Metavir, and congestive hepatic fibrosis score (CHFS). Additionally, in patients who had two or more MRE studies, global liver stiffness was compared for longitudinal assessment. RESULTS: Thirty-four patients were included in the study, with a mean age of 16.2 years. There was no statistically significant correlation between MRE-derived liver stiffness and Ishak score, Metavir score, %SR staining, and CHFS score. Twenty patients had multiple MRE studies, with a mean age of 16.5 years, and these showed a statistically significant increase in mean liver stiffness from 3.72 to 4.68 (26% increase) within an average period of 24 months. CONCLUSIONS: The lack of correlation of liver stiffness with fibrosis stage observed in this study indicates that the effects of venous congestion in Fontan patients can confound the use of liver stiffness as a biomarker for fibrosis as assessed by percentage of SR staining, Ishak score, Metavir score, and CHFS score. These results provide motivation for further development of magnetic resonance imaging-based biomarkers to increase the specificity in the assessment of Fontan-associated liver disease. A steady increase in liver stiffness observed in these patients may be useful for longitudinal follow-up of liver health.


Assuntos
Técnicas de Imagem por Elasticidade , Técnica de Fontan , Hiperemia , Hepatopatias , Adolescente , Técnicas de Imagem por Elasticidade/métodos , Fibrose , Técnica de Fontan/efeitos adversos , Humanos , Hiperemia/diagnóstico por imagem , Hiperemia/etiologia , Hiperemia/patologia , Fígado/diagnóstico por imagem , Fígado/patologia , Cirrose Hepática/patologia , Hepatopatias/etiologia , Imageamento por Ressonância Magnética/métodos , Estudos Retrospectivos
2.
Cancer Causes Control ; 31(12): 1115-1128, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32981009

RESUMO

PURPOSE: There is provocative, yet inconsistent, evidence that sleep deficiency may influence the development of breast cancer. The purpose of this study was to evaluate the risk of breast cancer associated with sleep deficiency among postmenopausal women in the California Teachers Study (CTS). METHODS: We conducted a case-control study of 2,856 invasive breast cancer cases and 38,649 cancer-free controls, nested within the CTS. Self-administered questionnaires were used to ascertain several components of sleep deficiency, including quality, latency, duration, disturbance and use of sleep medications. Additionally, a Global Sleep Index (GSI) was created by summing the individual sleep components and categorizing into quartiles. Multivariable logistic regression analyses were used to estimate odds ratios and 95% confidence intervals (OR, 95% CI). RESULTS: Increased breast cancer risks were associated with sleep deficiency. With the exception of duration, linear increases in risk were associated with all the other individual components of sleep deficiency (p-trend ≤ 0.002). The OR for the highest GSI quartile vs. lowest was 1.24, 95% CI 1.12-1.38; p-trend < 0.001). CONCLUSIONS: Sleep deficiency may be a risk factor for breast cancer. Additional prospective studies and those aimed at elucidating underlying mechanism are warranted.


Assuntos
Neoplasias da Mama/epidemiologia , Pós-Menopausa , Sono , Adulto , Idoso , Idoso de 80 Anos ou mais , California/epidemiologia , Estudos de Casos e Controles , Feminino , Humanos , Estudos Longitudinais , Pessoa de Meia-Idade , Fatores de Risco , Adulto Jovem
3.
J Helminthol ; 94: e56, 2019 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-31248467

RESUMO

The causes of the beaching and death of sea turtles have not been fully clarified and continue to be studied. Mild, moderate and severe lesions caused by spirorchiidiosis have been seen for decades in different organs and were recently defined as the cause of death of a loggerhead turtle. In the present study, eyes and optic nerves were analysed in green sea turtles with spirorchiidiosis and no other debilitating factors. Injuries to the optic nerve and choroid layer were described in 235 animals (90%) infected with spirorchiids. Turtles with ocular spirorchiidiosis are approximately three times more likely to be cachectic than turtles with spirorchiidiosis without ocular involvement.


Assuntos
Oftalmopatias/veterinária , Olho/parasitologia , Infecções por Trematódeos/veterinária , Tartarugas/parasitologia , Animais , Brasil , Oftalmopatias/parasitologia , Feminino , Nervo Óptico/parasitologia , Nervo Óptico/patologia , Trematódeos/patogenicidade
4.
J Viral Hepat ; 25(5): 473-481, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29194861

RESUMO

This study evaluates trends in hepatitis C virus (HCV)-related hepatocellular carcinoma (HCC) incidence and survival in three settings, prior to introduction of direct-acting antiviral (DAA) therapies. HCV notifications from British Columbia (BC), Canada; New South Wales (NSW), Australia; and Scotland (1995-2011/2012/2013, respectively) were linked to HCC diagnosis data via hospital admissions (2001-2012/2013/2014, respectively) and mortality (1995-2013/2014/2015, respectively). Age-standardized HCC incidence rates were evaluated, associated factors were assessed using Cox regression, and median survival time after HCC diagnosis was calculated. Among 58 487, 84 529 and 31 924 people with HCV in BC, NSW and Scotland, 734 (1.3%), 1045 (1.2%) and 345 (1.1%) had an HCC diagnosis. Since mid-2000s, HCC diagnosis numbers increased in all jurisdictions. Age-standardized HCC incidence rates remained stable in BC and Scotland and increased in NSW. The strongest predictor of HCC diagnosis was older age [birth <1945, aHR in BC 5.74, 95% CI 4.84, 6.82; NSW 9.26, 95% CI 7.93, 10.82; Scotland 12.55, 95% CI 9.19, 17.15]. Median survival after HCC diagnosis remained stable in BC (0.8 years in 2001-2006 and 2007-2011) and NSW (0.9 years in 2001-2006 and 2007-2013) and improved in Scotland (0.7 years in 2001-2006 to 1.5 years in 2007-2014). Across the settings, HCC burden increased, individual-level risk of HCC remained stable or increased, and HCC survival remained extremely low. These findings highlight the minimal impact of HCC prevention and management strategies during the interferon-based HCV treatment era and form the basis for evaluating the impact of DAA therapy in the coming years.


Assuntos
Carcinoma Hepatocelular/epidemiologia , Carcinoma Hepatocelular/mortalidade , Hepatite C Crônica/complicações , Neoplasias Hepáticas/epidemiologia , Neoplasias Hepáticas/mortalidade , Idoso , Idoso de 80 Anos ou mais , Colúmbia Britânica/epidemiologia , Feminino , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , New South Wales/epidemiologia , Escócia/epidemiologia , Análise de Sobrevida
5.
Am J Transplant ; 18(2): 492-503, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28992380

RESUMO

Organ shortage continues to challenge the field of transplantation. One potential group of donors are those who have been transplant recipients themselves, or Organ Donation After Transplant (ODAT) donors. We conducted a retrospective cohort study to describe ODAT donors and to compare outcomes of ODAT grafts versus conventional grafts. From October 1, 1987 to June 30, 2015, 517 former recipients successfully donated 803 organs for transplant. Former kidney recipients generally survived a median of approximately 4 years before becoming an ODAT donor whereas liver, lung, and heart recipients generally survived less than a month prior to donation. In the period June 1, 2005 to December 31, 2014, liver grafts from ODAT donors had a significantly higher risk of graft failure compared to non-ODAT liver transplants (P = .008). Kidney grafts donated by ODAT donors whose initial transplant occurred >1 year prior were associated with significantly increased graft failure (P = .012). Despite increased risk of graft failure amongst certain ODAT grafts, 5-year survival was still high. ODAT donors should be considered another form of expanded criteria donor under these circumstances.


Assuntos
Sobrevivência de Enxerto , Doadores Vivos , Transplante de Órgãos/mortalidade , Complicações Pós-Operatórias , Obtenção de Tecidos e Órgãos/estatística & dados numéricos , Transplantados/estatística & dados numéricos , Adolescente , Adulto , Feminino , Seguimentos , Rejeição de Enxerto , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Prognóstico , Sistema de Registros , Reoperação , Estudos Retrospectivos , Fatores de Risco , Taxa de Sobrevida , Obtenção de Tecidos e Órgãos/métodos , Adulto Jovem
6.
Am J Transplant ; 17(12): 3183-3192, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28726327

RESUMO

The shortage of deceased-donor organs is compounded by donation metrics that fail to account for the total pool of possible donors, leading to ambiguous donor statistics. We sought to assess potential metrics of organ procurement organizations (OPOs) utilizing data from the Nationwide Inpatient Sample (NIS) from 2009-2012 and State Inpatient Databases (SIDs) from 2008-2014. A possible donor was defined as a ventilated inpatient death ≤75 years of age, without multi-organ system failure, sepsis, or cancer, whose cause of death was consistent with organ donation. These estimates were compared to patient-level data from chart review from two large OPOs. Among 2,907,658 inpatient deaths from 2009-2012, 96,028 (3.3%) were a "possible deceased-organ donor." The two proposed metrics of OPO performance were: (1) donation percentage (percentage of possible deceased-donors who become actual donors; range: 20.0-57.0%); and (2) organs transplanted per possible donor (range: 0.52-1.74). These metrics allow for comparisons of OPO performance and geographic-level donation rates, and identify areas in greatest need of interventions to improve donation rates. We demonstrate that administrative data can be used to identify possible deceased donors in the US and could be a data source for CMS to implement new OPO performance metrics in a standardized fashion.


Assuntos
Transplante de Órgãos , Doadores de Tecidos/provisão & distribuição , Obtenção de Tecidos e Órgãos/organização & administração , Obtenção de Tecidos e Órgãos/estatística & dados numéricos , Adolescente , Adulto , Idoso , Cadáver , Coleta de Dados , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estados Unidos , Adulto Jovem
8.
J Viral Hepat ; 24(11): 944-954, 2017 11.
Artigo em Inglês | MEDLINE | ID: mdl-28502088

RESUMO

The global hepatitis strategy calls for increased effort to diagnose those infected, with a target of 90% diagnosed by 2030. Scotland's Action Plan on Hepatitis C included awareness-raising campaigns, undertaken during 2008-2011, to promote testing by general practitioners. We examined hepatitis C virus (HCV) testing practice among general practitioners before and following these campaigns. Scottish general practitioners were surveyed, using Dillman's method, in 2007 and 2013; response rates were 69% and 60%, respectively. Most respondents offer testing when presented with a risk history (86% in 2007, 88% in 2013) but only one-fifth actively sought out risk factors (19% in 2007, 21% in 2013). Testing was reportedly always/almost always/usually offered to people who inject drugs (84% in 2007, 87% in 2013). Significant improvements in the offer of testing were reported in patients with abnormal LFTs (41% in 2007, 65% in 2013, P<.001) and who had received medical/dental treatment in high prevalence countries (14% in 2007, 24% in 2013, P=.001). In 2013, 25% of respondents had undertaken HCV-related continued professional development. This group was significantly more likely to actively seek out risk factors (P=.009) but only significantly more likely to offer a test to patients who had received medical/dental treatment in high prevalence countries (P=.001). Our findings suggest that government-led awareness raising campaigns have limited impact on general practitioners' testing practices. If the majority of the HCV-infected population are to be diagnosed, practitioner-based or physician-centred interventions should be considered alongside educational initiatives targeted at professionals.


Assuntos
Conscientização , Clínicos Gerais , Hepacivirus , Hepatite C/epidemiologia , Programas Nacionais de Saúde , Atenção à Saúde , Testes Diagnósticos de Rotina , Pesquisas sobre Atenção à Saúde , Hepatite C/diagnóstico , Hepatite C/terapia , Humanos , Padrões de Prática Médica , Atenção Primária à Saúde
9.
Am J Transplant ; 17(4): 1097-1102, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-27596956

RESUMO

Outcomes of retransplantation after initial living donor liver transplantation (LDLT) are poorly understood. The aim of this study is to better understand the indications, timing, and outcomes of retransplantation after initial LDLT when compared to after initial deceased donor transplantation (DDLT). From 2002 to 2013, 209 retransplant recipients after initial LDLT and 2893 after initial DDLT were identified in Organ Procurement and Transplantation Network/United Network for Organ Sharing. Multivariable logistic models evaluated the association between initial transplant type and 1-year mortality. The most frequent reason for early graft failure (≤14 days) in LDLT recipients was vascular thrombosis (63.6%) versus primary graft failure in initial DDLT recipients (59.1%). LDLT recipients were more often acutely and/or critically ill with a greater proportion of Status 1 (42.6% vs. 27.3%; p < 0.001) and intensive care unit (52.2% vs. 39.9%; p = 0.001) recipients at the time of retransplantation. There was no difference in adjusted 1-year mortality between retransplant recipients after initial LDLT versus DDLT (odds ratio 0.74; 95% confidence interval 0.51-1.08). The proportion of recipients who ultimately required retransplantation for a third time was not different between the two groups (4.8%). Retransplantation outcomes after LDLT are not different from other retransplant procedures, despite recipients having greater acuity of illness and different indications.


Assuntos
Transplante de Fígado/mortalidade , Doadores Vivos , Reoperação/mortalidade , Obtenção de Tecidos e Órgãos/métodos , Adulto , Aloenxertos , Cadáver , Feminino , Sobrevivência de Enxerto , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento
10.
J Viral Hepat ; 24(4): 295-303, 2017 04.
Artigo em Inglês | MEDLINE | ID: mdl-27885753

RESUMO

At a population level, little is known regarding the risk of liver- and nonliver-related mortality and hospitalization and the development of hepatocellular carcinoma (HCC) in hepatitis C virus (HCV)-infected patients with decompensated cirrhosis (DC). This large-scale national record-linkage study estimates these outcomes following first hospital admission for DC. Record-linkages between national HCV diagnosis and clinical databases and the national inpatient hospital episode database and mortality register were conducted to follow-up the disease course of all identified HCV-diagnosed and chronically infected persons. The study population consisted of 1169 HCV chronically infected persons who had a first hospital admission for DC within the period 1994-2013. We observed an overall average annual percentage change of 12.6% in new DC patients (from 63 in 1994-1999 to 541 in 2009-2013), with no evidence for any improvement in the relative risks of liver-related or all-cause death over time. Between 1 January 1994 and 31 May 2014, 722 and 95 DC patients had died of a liver- and a nonliver-related cause, respectively, and 106 patients had a subsequent first admission for HCC. The 5-year cumulative incidence of liver-related mortality, nonliver-related mortality and first subsequent HCC admission was 61.3%, 8.2% and 8.8%, respectively. The health burden in HCV-infected patients associated with development of decompensated cirrhosis has increased dramatically over the last 20 years. Our findings establish the baseline mortality and HCC progression rates in DC patients against which the impact of new antiviral therapies can be measured.


Assuntos
Antivirais/uso terapêutico , Insuficiência Hepática , Hepatite C Crônica/complicações , Hepatite C Crônica/tratamento farmacológico , Cirrose Hepática/complicações , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Hepatite C Crônica/diagnóstico , Hospitalização , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Análise de Sobrevida , Resultado do Tratamento , Reino Unido
11.
Am J Transplant ; 16(10): 2903-2911, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27062327

RESUMO

Liver allocation policies are evaluated by how they impact waitlisted patients, without considering broader outcomes for all patients with end-stage liver disease (ESLD) not on the waitlist. We conducted a retrospective cohort study using two nationally representative databases: HealthCore (2006-2014) and five-state Medicaid (California, Florida, New York, Ohio and Pennsylvania; 2002-2009). United Network for Organ Sharing (UNOS) linkages enabled ascertainment of waitlist- and transplant-related outcomes. We included patients aged 18-75 with ESLD (decompensated cirrhosis or hepatocellular carcinoma) using validated International Classification of Diseases, Ninth Revision (ICD-9)-based algorithms. Among 16 824 ESLD HealthCore patients, 3-year incidences of waitlisting and transplantation were 15.8% (95% confidence interval [CI] : 15.0-16.6%) and 8.1% (7.5-8.8%), respectively. Among 67 706 ESLD Medicaid patients, 3-year incidences of waitlisting and transplantation were 10.0% (9.7-10.4%) and 6.7% (6.5-7.0%), respectively. In HealthCore, the absolute ranges in states' waitlist mortality and transplant rates were larger than corresponding ranges among all ESLD patients (waitlist mortality: 13.6-38.5%, ESLD 3-year mortality: 48.9-62.0%; waitlist transplant rates: 36.3-72.7%, ESLD transplant rates: 4.8-13.4%). States' waitlist mortality and ESLD population mortality were not positively correlated: ρ = -0.06, p-value = 0.83 (HealthCore); ρ = -0.87, p-value = 0.05 (Medicaid). Waitlist and ESLD transplant rates were weakly positively correlated in Medicaid (ρ = 0.36, p-value = 0.55) but were positively correlated in HealthCore (ρ = 0.73, p-value = 0.001). Compared to population-based metrics, waitlist-based metrics overestimate geographic disparities in access to liver transplantation.


Assuntos
Doença Hepática Terminal/cirurgia , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Disparidades em Assistência à Saúde/estatística & dados numéricos , Transplante de Fígado , Obtenção de Tecidos e Órgãos , Listas de Espera , Conjuntos de Dados como Assunto , Doença Hepática Terminal/epidemiologia , Feminino , Seguimentos , Geografia , Humanos , Classificação Internacional de Doenças , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Estados Unidos/epidemiologia
12.
Br J Dermatol ; 174(1): 56-67, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26302137
13.
J Viral Hepat ; 22(9): 727-36, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25581816

RESUMO

American association for the study of liver diseases (AASLD) and European Association for the Study of the Liver (EASL) guidelines recommend biannual hepatocellular carcinoma (HCC) screening for noncirrhotic patients with chronic hepatitis B infection (HBV), yet there are no data estimating surveillance rates or factors associated with surveillance. We performed a retrospective cohort study of US patients using the Truven Health Analytics databases from 2006 to 2010 and identified patients with noncirrhotic chronic HBV. Surveillance patterns were characterized using categorical and continuous outcomes, with the continuous measure of the proportion of time 'up to date' with surveillance (PUTDS), with the 6-month interval following each ultrasound categorized as 'up to date'. During a median follow-up of 26.0 (IQR: 16.2-40.0) months among 4576 noncirrhotic patients with chronic HBV (median age: 44 years, IQR: 36-52), only 306 (6.7%) had complete surveillance (one ultrasound every 6-month interval), 2727 (59.6%) incomplete (≥1 ultrasound) and 1543 (33.7%) none. The mean PUTDS was 0.34 ± 0.29, and the median was 0.32 (IQR: 0.03-0.52). In multinomial logistic regression models, patients diagnosed by a nongastroenterologist were significantly less likely to have complete surveillance (P < 0.001), as were those coinfected with HBV/HIV (P < 0.001). In linear regression models, nongastroenterologist provider, health insurance subtype, HBV/HIV coinfection, rural status and metabolic syndrome were independently associated with decreased surveillance. Patients with HIV had an absolute decrease in the PUTDS of 0.24, while patients in less populated rural areas had an absolute decrease of 0.10. HCC surveillance rates in noncirrhotic patients with chronic HBV in the United States are poor and lower than reported rates of HCC surveillance in cirrhotic patients.


Assuntos
Carcinoma Hepatocelular/diagnóstico , Testes Diagnósticos de Rotina/métodos , Acessibilidade aos Serviços de Saúde , Hepatite B Crônica/complicações , Neoplasias Hepáticas/diagnóstico , Programas de Rastreamento/métodos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Testes Diagnósticos de Rotina/estatística & dados numéricos , Feminino , Pesquisa sobre Serviços de Saúde , Humanos , Seguro Saúde , Masculino , Programas de Rastreamento/estatística & dados numéricos , Pessoa de Meia-Idade , Estudos Retrospectivos , Estados Unidos/epidemiologia , Adulto Jovem
14.
Am J Transplant ; 14(7): 1657-63, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24902486

RESUMO

Risk factors for hepatocellular carcinoma (HCC) recurrence after liver transplantation have been well described. It has been surmised that longer time on the waitlist may select for tumors with a lower-risk of recurrence posttransplant, as patients with unfavorable tumor characteristics would be delisted due to tumor progression. Utilizing national explant pathology records from transplant recipients waitlisted with T2 HCC exception points, this study explored the correlation between waiting time and the development of pathologic HCC features associated with increased risk of tumor recurrence. Of 1976 explant pathology reports submitted nationally between April 8, 2012 and June 30, 2013, 1453 (73.5%) were from recipients with automatic T2 HCC exception points. There was no association between pretransplant waiting time and the proportion of HCC explants with either: (i) a poorly differentiated tumor; (ii) macrovascular invasion; (iii) HCC beyond Milan or University of California San Francisco criteria; (iv) HCC beyond the "up-to-seven" criteria; or (v) extra-hepatic or lymph node involvement. Though there was a statistically significant increase in microvascular invasion in recipients with pretransplant waiting 6-12 months, this association was not seen when adjusted for United Network for Organ Sharing region. These findings suggest that waiting time alone may not select for tumors with more favorable characteristics.


Assuntos
Carcinoma Hepatocelular/patologia , Neoplasias Hepáticas/patologia , Transplante de Fígado/efeitos adversos , Recidiva Local de Neoplasia/diagnóstico , Seleção de Pacientes , Transplantados , Listas de Espera , Carcinoma Hepatocelular/mortalidade , Carcinoma Hepatocelular/cirurgia , Feminino , Seguimentos , Humanos , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/cirurgia , Transplante de Fígado/mortalidade , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/etiologia , Prognóstico , Fatores de Risco
15.
Am J Transplant ; 14(1): 79-87, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24304509

RESUMO

Due to the risk of waitlist dropout from tumor progression, liver transplant candidates with hepatocellular carcinoma (HCC) within Milan criteria (MC) receive standardized exception points. An expansion of this process to candidates with HCC beyond MC has been proposed, though it remains controversial. This study sought to better define the utilization of exception points in candidates with HCC beyond MC and the associated outcomes. We reviewed all nonstandardized HCC applications that underwent formal regional review board evaluation between January 1, 2005 and March 2, 2011; 2184 initial HCC exception point applications were submitted. Of these, 41.9% fulfilled MC, 26.6% fulfilled University of California-San Francisco (UCSF) criteria and 17.6% exceeded UCSF criteria. The majority of applications were accepted: 89.8% within UCSF and 71.2% beyond UCSF. There was a significantly (p < 0.001) higher risk of death on the waitlist or within 90 days of waitlist removal for candidates within UCSF (12.4%) or beyond UCSF (13.0%) criteria, compared to candidates with HCC within MC (6.0%). However, posttransplant outcomes were similar. While these results suggest increasing access to candidates with HCC beyond MC, comprehensive documentation of tumor characteristics and of successful downstaging is needed to ensure priority is restricted to those with the highest likelihood of favorable posttransplant outcome.


Assuntos
Carcinoma Hepatocelular/cirurgia , Neoplasias Hepáticas/cirurgia , Transplante de Fígado , Seleção de Pacientes , Listas de Espera , Adulto , Carcinoma Hepatocelular/patologia , Humanos , Neoplasias Hepáticas/patologia , Transplante de Fígado/mortalidade , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/cirurgia , Resultado do Tratamento , Listas de Espera/mortalidade
16.
J Viral Hepat ; 20 Suppl 2: 1-20, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23827008

RESUMO

The burden of disease due to chronic viral hepatitis constitutes a global threat. In many Balkan and Mediterranean countries, the disease burden due to viral hepatitis remains largely unrecognized, including in high-risk groups and migrants, because of a lack of reliable epidemiological data, suggesting the need for better and targeted surveillance for public health gains. In many countries, the burden of chronic liver disease due to hepatitis B and C is increasing due to ageing of unvaccinated populations and migration, and a probable increase in drug injecting. Targeted vaccination strategies for hepatitis B virus (HBV) among risk groups and harm reduction interventions at adequate scale and coverage for injecting drug users are needed. Transmission of HBV and hepatitis C virus (HCV) in healthcare settings and a higher prevalence of HBV and HCV among recipients of blood and blood products in the Balkan and North African countries highlight the need to implement and monitor universal precautions in these settings and use voluntary, nonremunerated, repeat donors. Progress in drug discovery has improved outcomes of treatment for both HBV and HCV, although access is limited by the high costs of these drugs and resources available for health care. Egypt, with the highest burden of hepatitis C in the world, provides treatment through its National Control Strategy. Addressing the burden of viral hepatitis in the Balkan and Mediterranean regions will require national commitments in the form of strategic plans, financial and human resources, normative guidance and technical support from regional agencies and research.


Assuntos
Carcinoma Hepatocelular/epidemiologia , Hepatite B Crônica/epidemiologia , Hepatite C Crônica/epidemiologia , Neoplasias Hepáticas/epidemiologia , Antivirais/economia , Antivirais/uso terapêutico , Península Balcânica/epidemiologia , Carcinoma Hepatocelular/etiologia , Infecção Hospitalar/epidemiologia , Infecção Hospitalar/prevenção & controle , Infecção Hospitalar/transmissão , Transmissão de Doença Infecciosa/prevenção & controle , Monitoramento Epidemiológico , Vacinas contra Hepatite B/administração & dosagem , Hepatite B Crônica/complicações , Hepatite B Crônica/diagnóstico , Hepatite B Crônica/prevenção & controle , Hepatite C Crônica/complicações , Hepatite C Crônica/diagnóstico , Hepatite C Crônica/prevenção & controle , Humanos , Neoplasias Hepáticas/etiologia , Região do Mediterrâneo/epidemiologia , Resultado do Tratamento , Vacinação/estatística & dados numéricos
17.
Cell Transplant ; 21(12): 2603-19, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22889456

RESUMO

In previous studies, we have demonstrated that spinal grafting of human or rat fetal spinal neural precursors leads to amelioration of spasticity and improvement in ambulatory function in rats with spinal ischemic injury. In the current study, we characterize the survival and maturation of three different human embryonic stem (ES) cell line-derived neural precursors (hNPCs) once grafted into ischemia-injured lumbar spinal cord in rats or in naive immunosuppressed minipigs. Proliferating HUES-2, HUES-7, or HUES-9 colonies were induced to form embryoid bodies. During the nestin-positive stage, the rosettes were removed and CD184(+)/CD271(-)/CD44(-)/CD24(+) population of ES-hNPCs FAC-sorted and expanded. Male Sprague-Dawley rats with spinal ischemic injury or naive immunosuppressed Gottingen-Minnesota minipigs received 10 bilateral injections of ES-NPCs into the L2-L5 gray matter. After cell grafting, animals survived for 2 weeks to 4.5 months, and the presence of grafted cells was confirmed after staining spinal cord sections with a combination of human-specific (hNUMA, HO14, hNSE, hSYN) or nonspecific (DCX, MAP2, CHAT, GFAP, APC) antibodies. In the majority of grafted animals, hNUMA-positive grafted cells were identified. At 2-4 weeks after grafting, double-labeled hNUMA/DCX-immunoreactive neurons were seen with extensive DCX(+) processes. At survival intervals of 4-8 weeks, hNSE(+) neurons and expression of hSYN was identified. Some hSYN-positive terminals formed putative synapses with the host neurons. Quantitative analysis of hNUMA(+) cells at 2 months after grafting showed comparable cell survival for all three cell lines. In the presence of low-level immunosuppression, no grafted cell survival was seen at 4.5 months after grafting. Spinal grafting of proliferating pluripotent HUES-7 cells led to consistent teratoma formation at 2-6 weeks after cell transplantation. These data show that ES-derived, FAC-sorted NPCs can represent an effective source of human NPCs to be used in CNS cell replacement therapies.


Assuntos
Células-Tronco Embrionárias/citologia , Células-Tronco Neurais/transplante , Isquemia do Cordão Espinal/terapia , Animais , Antígenos Nucleares/metabolismo , Proteínas de Ciclo Celular , Diferenciação Celular , Linhagem Celular , Sobrevivência Celular , Proteína Duplacortina , Corpos Embrioides/fisiologia , Células-Tronco Embrionárias/metabolismo , Humanos , Hospedeiro Imunocomprometido , Antígeno Ki-67/metabolismo , Masculino , Camundongos , Células-Tronco Neurais/citologia , Células-Tronco Neurais/metabolismo , Neurônios/metabolismo , Proteínas Associadas à Matriz Nuclear/metabolismo , Ratos , Ratos Sprague-Dawley , Isquemia do Cordão Espinal/metabolismo , Isquemia do Cordão Espinal/patologia , Suínos , Porco Miniatura , Fatores de Transcrição/metabolismo
18.
J Public Health (Oxf) ; 34(1): 14-23, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22138489

RESUMO

BACKGROUND: In Scotland, a general practice-based case-finding initiative, to diagnose and refer hepatitis C virus (HCV) chronically infected former injecting drug users (IDUs), was evaluated. METHODS: Testing was offered in eight Glasgow general practices in areas of high deprivation and high HCV and IDU prevalence to attendees aged 30-54 years with a history of IDU. Test uptake and diagnosis rates were compared with those in eight demographically similar control practices. RESULTS: Of 422 eligible intervention practice attendees, 218 (52%) were offered an HCV test and, of these, 121 (56%) accepted. Poor venous access in 13 individuals prevented testing. Of 105 tested, 70% (74/105) were antibody positive of which 58% (43/74) were RNA positive by PCR. Of 43 chronically infected individuals identified in intervention practices, 22 (51%) had attended specialist care within 30 months of the study, while 9 (21%) had defaulted. In control practices, 8 (22%) of 36 individuals tested were antibody positive. Test uptake and case yield were approximately 3 and 10 times higher in intervention compared with control practices, respectively. CONCLUSIONS: Targeted case-finding in primary care demonstrated higher test uptake and diagnosis rates; however, to optimize diagnosis and referral of chronically infected individuals, alternative means of testing (e.g. dried blood spots) and retention in specialist care (e.g. outreach services) must be explored.


Assuntos
Medicina Geral/estatística & dados numéricos , Hepacivirus/isolamento & purificação , Hepatite C Crônica/diagnóstico , Abuso de Substâncias por Via Intravenosa/complicações , Adulto , Feminino , Medicina Geral/métodos , Hepatite C Crônica/epidemiologia , Hepatite C Crônica/etiologia , Humanos , Entrevistas como Assunto , Masculino , Programas de Rastreamento/normas , Programas de Rastreamento/estatística & dados numéricos , Pessoa de Meia-Idade , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Áreas de Pobreza , Avaliação de Programas e Projetos de Saúde , Escócia , Testes Sorológicos/estatística & dados numéricos , Abuso de Substâncias por Via Intravenosa/epidemiologia , Abuso de Substâncias por Via Intravenosa/virologia
19.
Occup Med (Lond) ; 61(8): 531-40, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22114089

RESUMO

Hepatitis B virus (HBV) infection is a major cause of morbidity and mortality worldwide. Chronic hepatitis B (CHB) infection is associated with an increased risk of cirrhosis, hepatic decompensation and hepatocellular carcinoma (HCC). The likelihood of developing CHB is related to the age at which infection is acquired; the risk being lowest in adults and >90% in neonates whose mothers are hepatitis B e antigen positive. Treatment of CHB infection aims to clear HBV DNA and prevent the development of complications. There are currently seven drugs available for the treatment of CHB: five nucleos(t)ide analogues and two interferon-based therapies. Long-term treatment is often required, and the decision to treat is based on clinical assessment including the phase of CHB infection and the presence and extent of liver damage. A safe and effective HBV vaccine has been available since the early 1980s. Vaccination plays a central role in HBV prevention strategies worldwide, and a decline in the incidence and prevalence of HBV infection following the introduction of universal HBV vaccination programmes has been observed in many countries including the USA and parts of South East Asia and Europe. Post-exposure prophylaxis (PEP) with HBV vaccine +/- hepatitis B immunoglobulin is highly effective in preventing mother to child transmission and in preventing transmission following sharps injuries, sexual contact and other exposures to infected blood and body fluids. Transmission of HBV in the health care setting has become an increasingly rare event in developed nations. However, it remains a significant risk in developing countries reflecting the higher prevalence of CHB, limited access to HBV vaccination and PEP and a lack of adherence to standard infection control precautions.


Assuntos
Hepatite B/diagnóstico , Hepatite B/terapia , Antivirais/uso terapêutico , Feminino , Hepatite B/prevenção & controle , Hepatite B/transmissão , Vacinas contra Hepatite B/uso terapêutico , Humanos , Masculino , Programas de Rastreamento/métodos , Gravidez , Complicações Infecciosas na Gravidez/prevenção & controle
20.
J Viral Hepat ; 18 Suppl 1: 1-16, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21824223

RESUMO

Worldwide, the hepatitis B virus (HBV) and the hepatitis C virus (HCV) cause, respectively, 600,000 and 350,000 deaths each year. Viral hepatitis is the leading cause of cirrhosis and liver cancer, which in turn ranks as the third cause of cancer death worldwide. Within the WHO European region, approximately 14 million people are chronically infected with HBV, and nine million people are chronically infected with HCV. Lack of reliable epidemiological data on HBV and HCV is one of the biggest hurdles to advancing policy. Risk groups such as migrants and injecting drug users (IDU) tend to be under-represented in existing prevalence studies; thus, targeted surveillance is urgently needed to correctly estimate the burden of HBV and HCV. The most effective means of prevention against HBV is vaccination, and most European Union (EU) countries have universal vaccination programmes. For both HBV and HCV, screening of individuals who present a high risk of contracting the virus is critical given the asymptomatic, and thereby silent, nature of disease. Screening of migrants and IDUs has been shown to be effective and potentially cost-effective. There have been significant advances in the treatment of HCV and HBV in recent years, but health care professionals remain poorly aware of treatment options. Greater professional training is needed on the management of hepatitis including the treatment of liver cancer to encourage adherence to guidelines and offer patients the best possible outcomes. Viral hepatitis knows no borders. EU Member States, guided by the EU, need to work in a concerted manner to implement lasting, effective policies and programmes and make tackling viral hepatitis a public health priority.


Assuntos
Hepatite B/epidemiologia , Hepatite B/prevenção & controle , Hepatite C/epidemiologia , Hepatite C/prevenção & controle , Europa (Continente)/epidemiologia , Hepatite B/complicações , Hepatite B/mortalidade , Hepatite C/complicações , Hepatite C/mortalidade , Humanos , Cirrose Hepática/epidemiologia , Cirrose Hepática/prevenção & controle , Cirrose Hepática/virologia , Neoplasias Hepáticas/epidemiologia , Neoplasias Hepáticas/prevenção & controle , Neoplasias Hepáticas/virologia , Programas de Rastreamento/métodos , Vigilância da População/métodos , Vacinação/estatística & dados numéricos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA