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1.
Brain Behav Immun ; 111: 395-411, 2023 07.
Artigo em Inglês | MEDLINE | ID: mdl-37169133

RESUMO

Aging coincides with major changes in brain immunity that aid in a decline in neuronal function. Here, we postulate that systemic, pro-aging factors contribute to immunological changes that occur within the brain during aging. To investigate this hypothesis, we comprehensively characterized the central and peripheral immune landscape of 20-month-old male mice using cytometry by time-of-flight (CyTOF) and investigated the role of age-associated circulating factors. We found that CD8+ T cells expressing programmed cell death protein 1 (PD1) and tissue-resident memory CD8+ T cells accumulated in the aged brain while levels of memory T cells rose in the periphery. Injections of plasma derived from 20-month-old mice into 5-month-old receiving mice decreased the frequency of splenic and circulating naïve T cells, increased memory CD8+ T cells, and non-classical, patrolling monocytes in the spleen, and elevated levels of regulatory T cells and non-classical monocytes in the blood. Notably, CD8+ T cells accumulated within white matter areas of plasma-treated mice, which coincided with the expression of vascular cell adhesion molecule 1 (VCAM-1), a mediator of immune cell trafficking, on the brain vasculature. Taken together, we here describe age-related immune cell changes in the mouse brain and circulation and show that age-associated systemic factors induce the expansion of CD8+ T cells in the aged brain.


Assuntos
Linfócitos T CD8-Positivos , Linfócitos T Reguladores , Camundongos , Masculino , Animais , Fatores Etários , Envelhecimento , Encéfalo
2.
Clin Transl Radiat Oncol ; 32: 29-34, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34825071

RESUMO

BACKGROUND AND PURPOSE: Radiation damage to neural and vascular tissue, such as the neurovascular bundles (NVBs) and internal pudendal arteries (IPAs), during radiotherapy for prostate cancer (PCa) may cause erectile dysfunction. Neurovascular-sparing magnetic resonance-guided adaptive radiotherapy (MRgRT) aims to preserve erectile function after treatment. However, the NVBs and IPAs are not routinely contoured in current radiotherapy practice. Before neurovascular-sparing MRgRT for PCa can be implemented, the interrater agreement of the contouring of the NVBs and IPAs on pre-treatment MRI needs to be assessed. MATERIALS AND METHODS: Four radiation oncologists independently contoured the prostate, NVB, and IPA in an unselected consecutive series of 15 PCa patients, on pre-treatment MRI. Dice similarity coefficients (DSCs) for pairwise interrater agreement of contours were calculated. Additionally, the DCS of a subset of the inferior half of the NVB contours (i.e. approximately prostate midgland to apex level) was calculated. RESULTS: Median overall interrater DSC for the left and right NVB was 0.60 (IQR: 0.54 - 0.68) and 0.61 (IQR: 0.53 - 0.69) respectively and for the left and right IPA 0.59 (IQR: 0.53 - 0.64) and 0.59 (IQR: 0.52 - 0.64) respectively. Median overall interrater DSC for the inferior half of the left NVB was 0.67 (IQR: 0.58 - 0.74) and 0.67 (IQR: 0.61 - 0.71) for the right NVB. CONCLUSION: We found that the interrater agreement for the contouring of the NVB and IPA improved with enhancement of the MRI sequence as well as further training of the raters. The agreement was best in the subset of the inferior half of the NVB, where a good agreement is clinically most relevant for neurovascular-sparing MRgRT for PCa.

3.
Encephale ; 47(2): 181-184, 2021 Apr.
Artigo em Francês | MEDLINE | ID: mdl-32473777

RESUMO

Hepatitis C is a transmissible hepatic and extra-hepatic disease caused by the hepatitis C virus (HCV). HCV develops into a chronic infection among approximately 70% of the contaminated subjects. Chronic HCV infection is estimated to affect between 0.5% and 1 % of the general population in France, which causes an important burden of disease, in particular due to the occurrence of cirrhosis and liver cancer. New antiviral drugs now allow to cure more than 95% of patients in just a few weeks of treatment with very limited safety issues. This therapeutic revolution has led the World Health Organization and many national governments to aim for an elimination of HCV, which has been defined as a 90%-reduction of the incidence rate, and a 65%-reduction in the number of HCV-related deaths on the basis of the 2015 figures. In this respect, the French Ministry of Health has recently decided to extend the ability to prescribe the new antiviral drugs to any physician. However, the elimination campaign of HCV will also need to correctly identify, screen, and treat the main target populations. If people who inject drugs (PWIDs) certainly constitute the most important population concerned by the challenge of HCV elimination, more hidden reservoirs in which HCV transmission can insidiously evolve should be identified and specifically targeted as well. Inpatient psychiatric populations might constitute one of these hidden reservoirs. International data suggest that chronic HCV infection affects approximately 5% of psychiatric inpatients in Europe. This very high prevalence estimate can in part be due to the very frequent psychiatric disorders found among the current or former PWIDs. However, a part of the seropositive patients does not report a history of drug use, and other factors could contribute to the increased risk of contamination in this population including atypical routes of transmission related to institutional promiscuity. Exploring the general profile and risk-behaviors of the psychiatric inpatients found infected by the HCV is thus warranted for future studies. Screening and treating HCV in the specific population of psychiatric patients is part of the general public health objective of eliminating HCV at a national level. Moreover, it also directly fits into the individualized psychiatric care. Many recent data suggest that HCV also has a neural tropism, in particular within glial cells, such as astrocytes or oligodendrocytes. As such, HCV foments inflammatory processes in the brain and contributes to cognitive impairments and psychiatric symptoms such as anxiety or depression. At the individual level, treating HCV infection can improve the psychiatric state and increase patients' outcomes in terms of well-being and quality of life. For all these reasons, the field of psychiatry needs local and national actions for informing and training professionals about HCV screening and treating modalities. Patient and family associations also need to be involved in this general effort of micro-elimination. A key role should be assigned to the general practitioners embedded within inpatient psychiatric units. They are the best fitted professionals to screen, treat, and empower patients, to inform and train other caregivers of the psychiatric field, and to act as a relay with hepatology teams if required. Hospital pharmacists are other important stakeholders. In a national context in which the funding of psychiatric care, including medications, is based on predefined funding envelops, innovative initiatives will have to be set up by local or national health authorities, in partnership with pharmacists, to allow for the treatment of psychiatric inpatients. In conclusion, the world of psychiatry is a possible hidden reservoir of HCV and, as such, a part of the challenge for eliminating the virus. Patients, families, and caregivers will have to be correctly sensitized and trained to play their role in the process. Specific investigations will be required to better understand why such an increased prevalence of HCV is observed in this population. Specific adaptations of the cascade of care within psychiatric settings, including access to treatment, will need to be designed, implemented, and evaluated for reaching micro-elimination of HCV in psychiatry.


Assuntos
Hepatite C Crônica , Hepatite C , Antivirais/uso terapêutico , Hepacivirus , Hepatite C/complicações , Hepatite C/tratamento farmacológico , Hepatite C/epidemiologia , Hepatite C Crônica/complicações , Hepatite C Crônica/tratamento farmacológico , Hepatite C Crônica/epidemiologia , Humanos , Qualidade de Vida
4.
J Laryngol Otol ; : 1-6, 2020 Nov 04.
Artigo em Inglês | MEDLINE | ID: mdl-33143756

RESUMO

BACKGROUND: Aerosol generation during temporal bone surgery caries the risk of viral transmission. Steps to mitigate this problem are of particular importance during the coronavirus disease 2019 pandemic. OBJECTIVE: To quantify the effect of barrier draping on particulate material dispersion during temporal bone surgery. METHODS: The study involved a cadaveric model in a simulated operating theatre environment. Particle density and particle count for particles sized 1-10 µ were measured in a simulated operating theatre environment while drilling on a cadaveric temporal bone. The effect of barrier draping to decrease dispersion was recorded and analysed. RESULTS: Barrier draping decreased counts of particles smaller than 5 µ by a factor of 80 in the operating theatre environment. Both particle density and particle count showed a statistically significant reduction with barrier draping (p = 0.027). CONCLUSION: Simple barrier drapes were effective in decreasing particle density and particle count in the operating theatre model and can prevent infection in operating theatre personnel.

5.
J Autism Dev Disord ; 50(4): 1380-1390, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31953573

RESUMO

As executive functioning (EF) is especially sensitive to age-related cognitive decline, EF was evaluated by using a multi-method assessment. Fifty males (60-85 years) with a late adulthood autism spectrum condition (ASC) diagnosis and 51 non-ASC males (60-83 years) were compared on cognitive tests across EF domains (cognitive flexibility, planning, processing speed, and working memory) and a self- and proxy report of the Behavior Rating Inventory of Executive Function-Adult Version. While no objective performance differences emerged, autistic males and their proxies did report more EF challenges than non-ASC males on the subjective measure. In order to know how to support the older autistic men who received their ASC diagnosis in late adulthood with their daily life EF challenges, it is important to understand what underlies these subjective EF problems.


Assuntos
Envelhecimento/psicologia , Transtorno Autístico/fisiopatologia , Cognição , Função Executiva , Idoso , Idoso de 80 Anos ou mais , Humanos , Aprendizagem , Masculino , Memória de Curto Prazo , Pessoa de Meia-Idade , Testes Neuropsicológicos
7.
HIV Med ; 19(3): 227-237, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29214737

RESUMO

OBJECTIVES: Studies evaluating the efficacy and safety of the fixed-dose combination ledipasvir (LDV)/sofosbuvir (SOF) in patients coinfected with HIV-1 and hepatitis C virus (HCV) have mainly included treatment-naïve patients without cirrhosis. We aimed to evaluate the efficacy and safety of this combination in treatment-experienced patients with and without cirrhosis. METHODS: We conducted a multicentre, open-label, double-arm, nonrandomized study in patients coinfected with HIV-1 and HCV genotype 1 with and without cirrhosis, who had good viral suppression on their antiretroviral regimens. All patients were pretreated with a first-generation NS3/4A protease inhibitor (PI) plus pegylated interferon/ribavirin. Patients received a fixed-dose combination of LDV/SOF for 12 weeks, or for 24 weeks if cirrhosis was present. The primary endpoint was a sustained virological response (SVR) 12 weeks after the end of therapy. Secondary endpoints included safety, pharmacokinetics and patient-reported outcomes. RESULTS: Of the 68 patients enrolled, 39.7% had cirrhosis. Sixty-five patients [95.6%; 95% confidence interval (CI): 87.6-99.1%; P < 0.0001] achieved an SVR, with similar rates of SVR in those with and without cirrhosis. Tolerance was satisfactory, with mainly grade 1 or 2 adverse events. Among patient-reported outcomes, only fatigue significantly decreased at the end of treatment compared with baseline [odds ratio (OR): 0.36; 95% CI: 0.14-0.96; P = 0.04]. Mean tenofovir area under the plasma concentration-time curve (AUC) at week 4 was high, with mean ± SD AUC variation between baseline and week 4 higher in cirrhotic than in noncirrhotic patients (3261.57 ± 1920.47 ng/mL vs. 1576.15 ± 911.97 ng/mL, respectively; P = 0.03). Mild proteinuria (54.4%), hypophosphataemia (50.0%), blood bicarbonate decrease (29.4%) and hypokalaemia (13.2%) were reported. The serum creatinine level was not modified. CONCLUSIONS: LDV/SOF provided a high SVR rate in PI-experienced subjects coinfected with HCV genotype 1 and HIV-1, including patients with cirrhosis.


Assuntos
Benzimidazóis/administração & dosagem , Coinfecção/tratamento farmacológico , Fluorenos/administração & dosagem , Infecções por HIV/tratamento farmacológico , Hepatite C Crônica/tratamento farmacológico , Medidas de Resultados Relatados pelo Paciente , Sofosbuvir/administração & dosagem , Idoso , Benzimidazóis/efeitos adversos , Esquema de Medicação , Feminino , Fibrose , Fluorenos/efeitos adversos , Genótipo , Inibidores da Protease de HIV/uso terapêutico , HIV-1/genética , Hepacivirus/genética , Hepatite C Crônica/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Sofosbuvir/efeitos adversos , Resposta Viral Sustentada , Resultado do Tratamento
8.
Ceylon Med J ; 62(3): 184-188, 2017 09 30.
Artigo em Inglês | MEDLINE | ID: mdl-29076713

RESUMO

Introduction: The dietary habits of children expose the oral cavity to challenging environments. A durable interface between the restorative material and tooth surface is essential to ensure marginal integrity thereby contributing to the longevity of restoration. Objectives: The objective of this study was to compare the micro-leakage of two newer glass ionomer cements (SDI Riva Self Cure GIC and GC Fuji IX GP EXTRA) in primary molars immersed in sugarcane juice, chocolate milk and mango drink. Methods: The study included 60 extracted non carious upper and lower primary molars. The buccal and lingual surfaces were restored with SDI Riva Self Cure GIC and GC Fuji IX GP EXTRA respectively. The sample was divided into three groups (chocolate milk, mango drink, sugarcane juice). Each group (n=18) was further subdivided into three subgroups based on the immersion regime. Six teeth were kept as control. The teeth were immersed in Rhodamine B dye. Following this, micro-leakage was determined under 40 x stereomicroscope. Results: Both the materials showed micro leakage when immersed in the three beverages. When specimen under each group were compared, the microleakage score increased with an increase in immersion frequency. This was not statistically significant. The microleakage values for both the materials immersed in the three beverages were not significant. Conclusions: Both the materials used in this study can be conveniently used in restoration of primary molars.

9.
Aliment Pharmacol Ther ; 46(11-12): 1054-1060, 2017 12.
Artigo em Inglês | MEDLINE | ID: mdl-28994127

RESUMO

BACKGROUND: Hepatitis B virus (HBV)/hepatitis C virus (HCV) confection has been rarely studied in nonasian series. AIM: To compare the characteristics of HBV/HCV coinfected patients to those of HBV- or HCV-monoinfected patients in the ANRS CO22 HEPATHER cohort study. PATIENTS AND METHODS: Of the 20 936 included patients, 95 had HBV/HCV coinfection (hepatitis B surface antigen, anti-HCV antibody and HCV RNA positive) and were matched with 375 HBV- and 380 HCV-monoinfected patients on age, gender and time since HBV or HCV diagnosis. RESULTS: F3-F4 fibrosis was more frequent in coinfected patients (58%) than in HBV- (32%, P < .0001), but similar in HCV-monoinfected patients (52%, P = .3142). Decompensated cirrhosis was more frequent in coinfected patients (11%) than in HBV- (2%, P = .0002) or HCV- (4%, P = .0275) monoinfected patients. Past excessive alcohol use was more frequent in coinfected patients (26%) than in HBV (12%, P = .0011), but similar in HCV monoinfected patients (32%, P = .2868). Coinfected patients had a higher proportion with arterial hypertension (42%) than HBV- (26%) or HCV-monoinfected patients (25%) (P < .003). Multivariable analysis confirmed the association between F3-F4 fibrosis and HCV infection in HBV-infected patients (OR = 3.84, 95% CI 1.99-7.43) and the association between decompensated cirrhosis and coinfection in HBV infected (OR = 5.58, 95% CI 1.42-22.0) or HCV infected patients (OR = 3.02, 95% CI 1.22-7.44). CONCLUSIONS: HCV coinfection harmfully affects liver fibrosis in HBV patients, while decompensated cirrhosis is increased in coinfected patients compared with HBV- or HCV-monoinfected patients. HCV treatment is as safe and effective in coinfected as monoinfected patients and should be considered following the same rules as HCV monoinfected patients.


Assuntos
Hepatite B/epidemiologia , Hepatite C/epidemiologia , Cirrose Hepática/epidemiologia , Adulto , Idoso , Estudos de Coortes , Coinfecção/virologia , Feminino , Hepatite B/patologia , Hepatite C/patologia , Anticorpos Anti-Hepatite C , Humanos , Cirrose Hepática/patologia , Masculino , Pessoa de Meia-Idade
10.
Brachytherapy ; 16(2): 282-290, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28110899

RESUMO

PURPOSE: Determining the independent effect of additional intraoperative adaptive C-arm cone-beam CT (CBCT) planning vs. transrectal ultrasound (TRUS)-guided interactive planning alone in 125I brachytherapy for prostate cancer (PCa) on biochemical disease-free survival (BDFS). METHODS AND MATERIALS: T1/T2-stage PCa patients receiving TRUS-guided brachytherapy from 2000 to 2014 were analyzed. From October 2006, patients received additional intraoperative adaptive CBCT planning for dosimetric evaluation and subsequent remedial seed placement in underdosed areas. Patients were stratified according to the National Comprehensive Cancer Network (NCCN) risk classification. Kaplan-Meier analysis was used to estimate BDFS (primary outcome), overall survival, and PCa-specific survival (secondary outcomes). Cox regression was used to assess the relation between CBCT use and biochemical failure (BF) and overall mortality. RESULTS: In all, 1623 patients were included. Median followup was 99 months (interquartile range 70-115) for TRUS patients (n = 613) and 51 months (interquartile range 29-70) for CBCT patients (n = 1010). BF occurred 203 times and 206 patients died, 26 from PCa. For TRUS and CBCT patients, 7-year BDFS was 87.2% vs. 93.5% (log rank: p = 0.04) for low, 75.9% vs. 88.5% (p < 0.001) for intermediate, and 57.1% vs. 85.0% for high-risk patients (p < 0.001). For TRUS and CBCT patients, 7-year PCa-specific survival was 96.0% vs. 100% (p < 0.0001). After Cox regression, CBCT patients had lower hazard of BF: hazard ratio (HR) 0.25 (95% confidence interval [CI]: 0.18-0.33; p < 0.0001). Corrected for confounders, CBCT remained a predictor of BF: HR 0.51 (95% CI: 0.31-0.86; p = 0.01) but not for overall mortality: HR 0.66 (95% CI: 0.40-1.07; p = 0.09). CONCLUSIONS: Additional intraoperative adaptive CBCT planning in 125I prostate brachytherapy leads to a significant increase in BDFS in all NCCN risk groups.


Assuntos
Braquiterapia/métodos , Radioisótopos do Iodo/administração & dosagem , Neoplasias da Próstata/radioterapia , Planejamento da Radioterapia Assistida por Computador/métodos , Idoso , Tomografia Computadorizada de Feixe Cônico/métodos , Intervalo Livre de Doença , Humanos , Radioisótopos do Iodo/uso terapêutico , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Antígeno Prostático Específico/sangue , Neoplasias da Próstata/mortalidade , Radiometria/métodos , Dosagem Radioterapêutica , Resultado do Tratamento
11.
J Viral Hepat ; 24(1): 80-85, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27699936

RESUMO

The increasing incidence of hepatocellular carcinoma (HCC) in Western countries requests reliable tumour markers for preclinical diagnosis. We evaluated the diagnostic accuracy of des-gamma-carboxy prothrombin (DCP), in comparison with alpha-fetoprotein (AFP) in a French cohort using a new analyser. One hundred and sixty-two patients with virus-related cirrhosis (46 HCC patients and 116 controls) were recruited in this retrospective proof-of-concept study. DCP was measured on new Lumipulse® G600 analyzer and AFP on usual Cobas e602 analyzer in serum samples that were collected at the time of HCC diagnosis for HCC patients or during follow-up for controls. DCP and AFP levels were higher in HCC patients. The area under receiver operating characteristic curve was larger for DCP than for AFP (0.89 vs 0.77, P=.03). At the cut-off value of 128 mAU/mL, sensitivity and specificity for DCP were 74% and 92%. At the cut-off value of 20 µg/L, sensitivity and specificity for AFP were 63% and 82%. NRI>0 for the association of "AFP+DCP" were 101%, P<.0001, and 23%, P=.03, compared to "AFP" or "DCP" alone, respectively. We conclude that DCP outperformed AFP for the detection of HCC.


Assuntos
Biomarcadores/sangue , Carcinoma Hepatocelular/diagnóstico , Neoplasias Hepáticas/diagnóstico , Precursores de Proteínas/sangue , Idoso , Carcinoma Hepatocelular/sangue , Feminino , França , Humanos , Neoplasias Hepáticas/sangue , Masculino , Pessoa de Meia-Idade , Protrombina , Curva ROC , Estudos Retrospectivos , Sensibilidade e Especificidade , Soro/química , alfa-Fetoproteínas/análise
12.
Ann Oncol ; 27(12): 2172-2184, 2016 12.
Artigo em Inglês | MEDLINE | ID: mdl-27803003

RESUMO

BACKGROUND: Hepatitis B virus (HBV) reactivation is a well-known risk during chemotherapy for hematological malignancies with reported rates ranging between 14% and 72%. However, there is a paucity of data regarding HBV infection management and reactivation risk in patients receiving systemic treatments for solid tumors. DESIGN: We conducted a PubMed search for publications from January 1990 until May 2016 related to HBV reactivation. The search terms were 'hepatitis B reactivation', cross-referenced with 'chemotherapy', then 'hepatitis B' cross-referenced with International Non-proprietary Name of each of the most used chemotherapy drugs in solid tumors. RESULTS: From these data, a grading of HBV reactivation risk and recommendations for management are given for most frequently used anticancer drugs in solid tumors. CONCLUSION: Most drugs used for the treatment of solid tumors can induce hepatitis B reactivation in HBs antigen-positive patients. HBV screening can be recommended before systemic treatment initiation. Pre-emptive antiviral treatment can reduce the risk of HBV reactivation and prevent chemotherapy disruption.


Assuntos
Antineoplásicos/efeitos adversos , Vírus da Hepatite B/efeitos dos fármacos , Hepatite B/patologia , Neoplasias/tratamento farmacológico , Antineoplásicos/uso terapêutico , Doxorrubicina/efeitos adversos , Hepatite B/induzido quimicamente , Hepatite B/virologia , Vírus da Hepatite B/genética , Vírus da Hepatite B/patogenicidade , Humanos , Neoplasias/complicações , Neoplasias/virologia , Rituximab/efeitos adversos , Ativação Viral/efeitos dos fármacos
14.
Aliment Pharmacol Ther ; 44(5): 505-13, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27407002

RESUMO

BACKGROUND: There is a relationship between liver stiffness measurement (LSM) and outcome of HCV patients. AIM: To evaluate the performance of LSM to predict outcome of HCV patients at risk of liver-related complication. METHODS: We established a retrospective longitudinal cohort of 341 HCV patients with unequivocal cirrhosis. All underwent LSM and were followed from September 2006 to July 2015. Outcome measure was a composite end-point of end-stage liver disease (ESLD) and/or hepatocellular carcinoma (HCC). Cox models and areas under receiver operating characteristic (AUROC) curves were used to evaluate independent risk factors of outcome. RESULTS: Overall, LSM was below the 12.5 kPa threshold in 129 (37.8%) patients, including three-fourth and one-third of patients with or without a sustained virological response respectively. Liver disease progressed in 136 (39.9%) patients after a median observational period of 23.5 months. Older age, male gender, alcohol use disorders, metabolic syndrome and LSM were independent risk factors of liver disease progression. Age, alcohol use disorders and LSM were independently associated with ESLD. Age, gender and metabolic syndrome, but not LSM, were associated with HCC. The AUROC curves for disease progression, ESLD and HCC were 0.67, 0.70 and 0.58 respectively. Patients with a liver stiffness >12.5 kPa were at the highest risk of liver disease progression; below 12.5 kPa, liver stiffness was not discriminant. CONCLUSION: Liver stiffness measurement is not a surrogate of disease progression of HCV patients with cirrhosis. HCV patients with cirrhosis should undergo the recommended follow-up, regardless of liver stiffness measurement.


Assuntos
Progressão da Doença , Técnicas de Imagem por Elasticidade/tendências , Doença Hepática Terminal/diagnóstico , Hepatite C Crônica/diagnóstico , Hospitalização/tendências , Adulto , Idoso , Doença Hepática Terminal/complicações , Doença Hepática Terminal/terapia , Feminino , Hepatite C Crônica/complicações , Hepatite C Crônica/terapia , Humanos , Cirrose Hepática/complicações , Cirrose Hepática/diagnóstico , Cirrose Hepática/terapia , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento
15.
Haemophilia ; 22(5): 692-9, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27339614

RESUMO

AIM: This study explores the potential role of a novel interferon-containing regimen for treatment of patients with chronic hepatitis C (CHC) and underlying haemophilia. METHODS: This trial (NCT01741545) was an open-label, non-randomized phase 3 study, which included adult haemophiliacs with hepatitis C virus (HCV). Patients with HCV genotypes (GT)-2 or -3 were treated with Lambda-IFN/ribavirin (RBV)/daclatasvir (DCV) for 12 weeks (cohort A). Patients with HCV GT-1b or -4 were treated with Lambda-IFN/RBV/DCV for 12 weeks, followed by Lambda-IFN/RBV for an additional 12 weeks (cohort B). The primary endpoint was the proportion of patients with a sustained virologic response at post-treatment follow-up week 12 (SVR12). Clinical development of Lambda-IFN was discontinued during this trial leading to study termination before a 24-week post-treatment follow-up was obtained for all participants. RESULTS: Overall, 51 patients were treated (cohort A, n = 12; cohort B, n = 39). The proportion of patients achieving SVR12 was 92% in cohort A and 90% in cohort B. Therapy was generally well tolerated. The most common adverse events (AEs) were related to elevations in serum transaminases and/or bilirubin. Five serious AEs, four discontinuations due to AEs, and no deaths were reported. The rate of grade 3-4 bilirubin elevations was 17-18% across cohorts. CONCLUSION: Lambda-IFN/RBV/DCV treatment demonstrated a high SVR rate and was generally well tolerated with a safety profile consistent with expectations for this special patient population. This study supports use of DCV as part of a combination treatment regimen for haemophiliacs with CHC.


Assuntos
Antivirais/uso terapêutico , Hemofilia A/complicações , Hepatite C Crônica/tratamento farmacológico , Imidazóis/uso terapêutico , Interferon-alfa/uso terapêutico , Interleucinas/uso terapêutico , Polietilenoglicóis/uso terapêutico , Ribavirina/uso terapêutico , Adulto , Antivirais/efeitos adversos , Carbamatos , Esquema de Medicação , Quimioterapia Combinada , Genótipo , Hemofilia A/diagnóstico , Hepacivirus/genética , Hepatite C Crônica/complicações , Hepatite C Crônica/virologia , Humanos , Imidazóis/efeitos adversos , Interferons , Interleucinas/efeitos adversos , Interleucinas/genética , Pessoa de Meia-Idade , Polietilenoglicóis/efeitos adversos , Pirrolidinas , RNA Viral/sangue , Proteínas Recombinantes/uso terapêutico , Recidiva , Resultado do Tratamento , Valina/análogos & derivados , Adulto Jovem
16.
J Viral Hepat ; 23(10): 767-79, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27144512

RESUMO

We evaluated the cost-effectiveness and the budget impact of new DAA-based regimen use in France. A Markov model simulated chronic hepatitis C (CHC) treatment interventions with IFN-based and IFN-free regimens at stage of fibrosis ≥F3, ≥F2 or regardless of fibrosis stage, and treatment either with the least or the most expensive combination. It estimated quality-adjusted life years (QALYs) and incremental cost-effectiveness ratios (ICERs). It also assessed the budget impact over 5 years of treating all CHC-screened patients, regardless of fibrosis, assuming ≤20 000 patients treated/year and priority to ≥F3. Sensitivity analyses were also conducted. For genotypes (G) 1-4, the initiation of IFN-free regardless of fibrosis was a cost-effective strategy compared to prior standard of care (SOC) initiated at stage F2: €40 400-88 300/QALY gained in G1; similar results were obtained for patients infected with G4. Considering G2-3, the most cost-effective strategy was IFN-based regimens regardless of fibrosis compared to prior SOC initiated at stage F2: €21 300 and €19 400/QALY gained, respectively; the strategy with IFN-free regimens being more effective but not cost-effective at current costs. The budget impact of treating all CHC-screened patients over 5 years would range between 3.5 and 7.2 billion €, depending on whether one considers the least or the most expensive combination of new DAAs and whether one treats G2-3 with IFN-based or IFN-free new DAAs. In France, treatment initiation with new DDAs regardless of fibrosis stage is cost-effective, but would add 3.5-7.2 billion € to an already overburdened medical care system.


Assuntos
Antivirais/economia , Antivirais/uso terapêutico , Análise Custo-Benefício , Hepatite C Crônica/tratamento farmacológico , Inibidores de Proteases/economia , Inibidores de Proteases/uso terapêutico , Adolescente , Adulto , Idoso , Estudos Transversais , Feminino , França , Genótipo , Hepacivirus/classificação , Hepacivirus/genética , Hepatite C Crônica/virologia , Humanos , Masculino , Pessoa de Meia-Idade , Anos de Vida Ajustados por Qualidade de Vida , Adulto Jovem
17.
Brachytherapy ; 15(3): 296-305, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26948662

RESUMO

BACKGROUND: Localized recurrent prostate cancer after primary radiotherapy can be curatively treated using salvage iodine-125 ((125)I) brachytherapy. Selection is hampered by a lack of predictive factors for cancer control. This study aims to develop and internally validate a prognostic model for biochemical failure (BF) after salvage (125)I brachytherapy. METHODS AND MATERIALS: Whole-gland salvage (125)I brachytherapy patients were treated between 1993 and 2010 in two radiotherapy centers in the Netherlands. Multivariable Cox regression was performed to assess the predictive value of clinical parameters related to BF (Phoenix-definition [prostate-specific antigen [PSA]-nadir + 2.0 ng/mL]). Missing data were handled by multiple imputation. The model's discriminatory ability was assessed with Harrell's C-statistic. Internal validation was performed using bootstrap resampling (2000 data sets). Goodness-of-fit was evaluated with calibration plots. All analyses were performed using the recently published TRIPOD (Transparent reporting of a multivariable prediction model for individual prognosis or diagnosis) statement. RESULTS: After median followup of 74 months (range 5-138), 43 of a total 62 patients developed BF. In multivariable analysis, disease-free survival interval (DFSI) after primary therapy and pre-salvage prostate-specific antigen doubling time (PSADT) were predictors of BF: corrected hazard ratio (HR) 0.99 (95% confidence interval 0.97-0.999; p = 0.04) and 0.94 (95% confidence interval 0.89-0.99; p = 0.03), both for a 1-month increase (optimism-adjusted C-statistic 0.70). Calibration was accurate up to 36 months. Of patients with PSADT >30 months and DFSI >60 months, 36-month biochemical disease-free survival was >75%. Every 12-month increase in DFSI will allow 3-month decrease in PSADT while maintaining the same biochemical recurrence-free rates. CONCLUSIONS: We have presented results from a cohort of patients undergoing salvage (125)I-brachytherapy. Our data show that better selection of patients is possible with the DFSI and PSADT.


Assuntos
Braquiterapia/métodos , Recidiva Local de Neoplasia/radioterapia , Antígeno Prostático Específico/sangue , Neoplasias da Próstata/radioterapia , Terapia de Salvação , Idoso , Intervalo Livre de Doença , Seguimentos , Humanos , Radioisótopos do Iodo/uso terapêutico , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/sangue , Valor Preditivo dos Testes , Modelos de Riscos Proporcionais , Neoplasias da Próstata/sangue , Estudos Retrospectivos , Fatores de Tempo
18.
Transpl Infect Dis ; 18(1): 105-11, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26540585

RESUMO

Mycobacterium avium-intracellulare complex (MAC) infections are well known in immunocompromised patients, notably in human immunodeficiency virus infection, but remain scarcely described in kidney transplantation. Moreover, cutaneous involvement in this infection is very unusual. We describe here a disseminated infection caused by MAC in a kidney transplant recipient revealed by cutaneous lesions. This case highlights the need for an exhaustive, iterative microbiologic workup in the context of an atypical disease presentation in a renal transplant patient, regardless of the degree of immunosuppression.


Assuntos
Transplante de Rim/efeitos adversos , Complexo Mycobacterium avium/isolamento & purificação , Infecção por Mycobacterium avium-intracellulare/microbiologia , Adulto , Idoso , Feminino , Humanos , Terapia de Imunossupressão , Masculino , Pessoa de Meia-Idade , Transplantados
20.
J Viral Hepat ; 22(7): 596-606, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25412795

RESUMO

Alisporivir (ALV) is an oral, investigational host-targeting agent, with pangenotypic activity against hepatitis C virus (HCV). This randomized, double-blind, placebo-controlled, Phase II study explored the efficacy and safety of ALV with peginterferon-α2a/ribavirin (PR) in patients with chronic HCV genotype 1 infection in whom prior PR had failed (43% relapsers, 34% null responders and 23% partial responders). Four-hundred-and-fifty-nine patients were randomized (1:1:1:1) to ALV 600 mg once daily (QD), ALV 800 mg QD, ALV 400 twice daily (BID) or placebo plus PR for 48 weeks. When the global ALV trial programme was put on clinical hold, all patients in this study had received ≥31 weeks of randomized treatment; patients completed 48 weeks on PR alone. All ALV groups demonstrated superior rates of complete early virologic response (cEVR; primary endpoint) vs PR alone (P ≤ 0.0131), with highest cEVR rate seen with ALV 400 mg BID (74% vs 36% with PR alone; P < 0.0001). Respective SVR12 rates (key secondary endpoint) were 65% vs 26% in prior relapsers, 63% vs 5% in partial responders and 68% vs 3% in null responders. In patients who received >40 weeks of randomized treatment, the SVR12 rate was 89% for ALV 400 mg BID vs 30% for PR alone (P = 0.0053). Rates of viral breakthrough and relapse were lowest with ALV 400 mg BID. One case of pancreatitis (fully recovered) occurred with ALV/PR. Common AEs were headache, fatigue, anaemia, neutropenia and nausea. Hypertension was infrequent, but more common with ALV. ALV merits further investigation in interferon-free regimens in combination with direct-acting antiviral agents.


Assuntos
Antivirais/uso terapêutico , Ciclosporina/uso terapêutico , Hepatite C Crônica/tratamento farmacológico , Interferon-alfa/uso terapêutico , Ribavirina/uso terapêutico , Adulto , Idoso , Antivirais/efeitos adversos , Ciclosporina/efeitos adversos , Método Duplo-Cego , Quimioterapia Combinada/efeitos adversos , Quimioterapia Combinada/métodos , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/epidemiologia , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/patologia , Feminino , Humanos , Interferon-alfa/efeitos adversos , Masculino , Pessoa de Meia-Idade , Placebos , Ribavirina/efeitos adversos , Terapia de Salvação/efeitos adversos , Terapia de Salvação/métodos , Resultado do Tratamento , Carga Viral , Adulto Jovem
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