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1.
Sci Rep ; 11(1): 11582, 2021 06 02.
Artigo em Inglês | MEDLINE | ID: mdl-34078936

RESUMO

Pines are the dominant conifers in Mediterranean forests. As long-lived sessile organisms that seasonally have to cope with drought periods, they have developed a variety of adaptive responses. However, during last decades, highly intense and long-lasting drought events could have contributed to decay and mortality of the most susceptible trees. Among conifer species, Pinus pinaster Ait. shows remarkable ability to adapt to different environments. Previous molecular analysis of a full-sib family designed to study drought response led us to find active transcriptional activity of stress-responding genes even without water deprivation in tolerant genotypes. To improve our knowledge about communication between above- and below-ground organs of maritime pine, we have analyzed four graft-type constructions using two siblings as rootstocks and their progenitors, Gal 1056 and Oria 6, as scions. Transcriptomic profiles of needles from both scions were modified by the rootstock they were grafted on. However, the most significant differential gene expression was observed in drought-sensitive Gal 1056, while in drought-tolerant Oria 6, differential gene expression was very much lower. Furthermore, both scions grafted onto drought-tolerant rootstocks showed activation of genes involved in tolerance to abiotic stress, and is most remarkable in Oria 6 grafts where higher accumulation of transcripts involved in phytohormone action, transcriptional regulation, photosynthesis and signaling has been found. Additionally, processes, such as those related to secondary metabolism, were mainly associated with the scion genotype. This study provides pioneering information about rootstock effects on scion gene expression in conifers.


Assuntos
Regulação da Expressão Gênica de Plantas , Genes de Plantas , Pinus/genética , Raízes de Plantas/metabolismo , Adaptação Fisiológica , Secas
2.
Transplant Proc ; 51(1): 187-189, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30736972

RESUMO

BACKGROUND: Alcohol use disorders have a prevalence of 10% among the population of the United States and Europe and are one of the most frequent causes of liver cirrhosis in the Western world. Currently, alcohol-related liver cirrhosis represents one of the most frequent indications to liver transplant (LT), both as independent cause or associated with hepatitis C virus or hepatitis B virus infections. Starting from 2014, a multidisciplinary team involving surgeons, gastroenterologists, clinical toxicologists, psychiatrists, and psychologists was developed within the Modena Liver Transplant Center. METHODS: We retrospectively reviewed our prospectively maintained institutional database of liver transplants in order to identify cirrhotic patients eligible for LT with a diagnosis of alcohol use disorder. RESULTS: A total of 756 liver transplants were performed at Policlinico University Hospital, University of Modena, and Reggio Emilia, MO, Italy, between November 2000 and November 2017; 102 patients who underwent LT were considered eligible for inclusion in the study. CONCLUSIONS: The multidisciplinary approach, together with blood, urinary, and hair tests, allows identification of early recurrences and improves survival. Further studies are necessary to understand how multidisciplinary teams can change the 6-month rule in patient selection.


Assuntos
Alcoolismo/diagnóstico , Cirrose Hepática Alcoólica/cirurgia , Transplante de Fígado , Seleção de Pacientes , Adulto , Abstinência de Álcool , Feminino , Humanos , Itália , Transplante de Fígado/mortalidade , Masculino , Pessoa de Meia-Idade , Equipe de Assistência ao Paciente , Reincidência , Recidiva , Estudos Retrospectivos , Resultado do Tratamento , Estados Unidos
3.
Mol Ecol Resour ; 16(2): 574-87, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26358548

RESUMO

Maritime pine provides essential ecosystem services in the south-western Mediterranean basin, where it covers around 4 million ha. Its scattered distribution over a range of environmental conditions makes it an ideal forest tree species for studies of local adaptation and evolutionary responses to climatic change. Highly multiplexed single nucleotide polymorphism (SNP) genotyping arrays are increasingly used to study genetic variation in living organisms and for practical applications in plant and animal breeding and genetic resource conservation. We developed a 9k Illumina Infinium SNP array and genotyped maritime pine trees from (i) a three-generation inbred (F2) pedigree, (ii) the French breeding population and (iii) natural populations from Portugal and the French Atlantic coast. A large proportion of the exploitable SNPs (2052/8410, i.e. 24.4%) segregated in the mapping population and could be mapped, providing the densest ever gene-based linkage map for this species. Based on 5016 SNPs, natural and breeding populations from the French gene pool exhibited similar level of genetic diversity. Population genetics and structure analyses based on 3981 SNP markers common to the Portuguese and French gene pools revealed high levels of differentiation, leading to the identification of a set of highly differentiated SNPs that could be used for seed provenance certification. Finally, we discuss how the validated SNPs could facilitate the identification of ecologically and economically relevant genes in this species, improving our understanding of the demography and selective forces shaping its natural genetic diversity, and providing support for new breeding strategies.


Assuntos
Variação Genética , Técnicas de Genotipagem/métodos , Pinus/classificação , Pinus/genética , Polimorfismo de Nucleotídeo Único , França , Região do Mediterrâneo , Portugal , Análise de Sequência de DNA
4.
Ann Oncol ; 24 Suppl 2: ii24-9, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23715940

RESUMO

Current guidelines recommend transarterial chemoembolization (TACE) as the standard treatment of Barcelona-Clinic Liver Cancer (BCLC)-B patients. However, the long-term survival outcomes of patients managed with this technique do not appear fully satisfactory; in addition, intermediate-stage hepatocellular carcinoma (HCC) includes a heterogeneous population of patients with varying tumour burdens, liver function and disease aetiology. Therefore, not all patients with intermediate-stage HCC may derive similar benefit from TACE, and some patients may benefit from other treatment options, which are currently approved or being explored. These include different TACE modalities, such as selective TACE or drug-eluting beads TACE and radioembolization. The introduction of sorafenib in the therapeutic armamentarium for HCC has provided a new therapeutic option for the treatment of BCLC-B patients who are unsuitable to TACE or in whom TACE resulted in unacceptable toxicity. In addition, clinical trials aimed at investigating the potential role of this molecule in the treatment of patients with intermediate-stage HCC within combination therapeutic regimens are ongoing. This narrative review will present and discuss the most recent evidence on the locoregional or medical treatment with sorafenib in patients with intermediate-stage HCC.


Assuntos
Antineoplásicos/uso terapêutico , Carcinoma Hepatocelular/terapia , Quimioembolização Terapêutica , Neoplasias Hepáticas/terapia , Terapia de Alvo Molecular , Niacinamida/análogos & derivados , Compostos de Fenilureia/uso terapêutico , Inibidores de Proteínas Quinases/uso terapêutico , Carcinoma Hepatocelular/enzimologia , Carcinoma Hepatocelular/mortalidade , Carcinoma Hepatocelular/patologia , Quimioembolização Terapêutica/efeitos adversos , Quimioembolização Terapêutica/mortalidade , Humanos , Neoplasias Hepáticas/enzimologia , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/patologia , Estadiamento de Neoplasias , Niacinamida/efeitos adversos , Niacinamida/uso terapêutico , Seleção de Pacientes , Compostos de Fenilureia/efeitos adversos , Fatores de Risco , Sorafenibe , Fatores de Tempo , Resultado do Tratamento
5.
J Viral Hepat ; 19(9): 640-9, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22863268

RESUMO

Under-enrolment of women to randomized clinical trials, including chronic hepatitis C, has long been recognized. The aim of this study was to identify factors predictive of sustained virological response (SVR) to PEG IFN/Ribavirin antiviral therapy in relation to gender and reproductive status of female patients involved. Seven hundred and forty-six treatment-naïve patients (431 men, 315 women) treated with Peg-IFNα-2a (180 µg/week) or Peg-IFNα-2b (1.5 µg/kg/week) plus ribavirin (800-1400 mg/day) for 24 or 48 weeks were studied between 2006 and 2010. Differences in SVR rate, overall and by gender were assessed after adjustment and propensity score matching. SVR was obtained in 44.2% of Peg-IFNα-2a-treated patients and in 51.2% of Peg-IFNα-2b-treated patients (intention-to-treat; P = 0.139). Age, fibrosis stage and genotype 2 and 3 were independently associated with SVR by multivariate analysis. Analysing by gender, the difference in SVR between PEG-IFNα types was not significant in men but highly significant in women (Peg-IFNα-2a:39.1%vs Peg-IFNα-2b:54.4%, P = 0.007). This was attributable to a higher SVR rate with Peg-IFNα-2b in the difficult postmenopausal population (26.9% Peg-IFNα-2a vs 46.0% Peg-IFNα-2b, P = 0.040). In women, absence of menopause, genotype 2 hepatitis C virus infection and use of Peg-IFNα-2b were independently associated with SVR. In conclusion, predictive factors for SVR are different in men and women. Factors differing between genders are menopause, severe steatosis and peg-interferon used. The higher SVR rate with Peg-IFNα-2b in menopausal women is likely attributable to more favourable pharmacokinetics that allows Peg-IFNα-2b to reach visceral fat and oppose the increased cytokine production and enhanced inflammatory status in menopause.


Assuntos
Antivirais/uso terapêutico , Hepatite C Crônica/tratamento farmacológico , Interferon-alfa/uso terapêutico , Menopausa , Polietilenoglicóis/uso terapêutico , Ribavirina/uso terapêutico , Adolescente , Adulto , Fatores Etários , Idoso , Quimioterapia Combinada/métodos , Feminino , Humanos , Interferon alfa-2 , Masculino , Pessoa de Meia-Idade , Proteínas Recombinantes/uso terapêutico , Fatores Sexuais , Resultado do Tratamento , Adulto Jovem
6.
Andrologia ; 43(3): 222-3, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21486397

RESUMO

We introduce the diagnostic complexity of a testicular metastasis by signet ring cell adenocarcinoma of unknown origin. Testicular metastases are a rare event but, particular after 50 years of age, a testicular mass could represent a metastasis.


Assuntos
Adenocarcinoma/patologia , Carcinoma de Células em Anel de Sinete/secundário , Neoplasias da Próstata/patologia , Idoso , Carcinoma de Células em Anel de Sinete/diagnóstico , Carcinoma de Células em Anel de Sinete/patologia , Evolução Fatal , Humanos , Masculino
7.
J Viral Hepat ; 11(4): 302-9, 2004 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-15230852

RESUMO

Chronic hepatitis C virus (HCV) infection is associated with the development of lymphoproliferative disorders (LPDs). The aim of this investigation was to determine the prevalence and characterization of monoclonal gammopathy and benign and malignant LPDs in individuals with chronic hepatitis C. A total of 233 subjects diagnosed with chronic hepatitis C (male/female ratio: 131/102, median age; 49 years) were studied. Serum and urine were examined for the presence of a monoclonal gammopathy. A bone marrow aspirate and biopsy was obtained in individuals with a monoclonal gammopathy. Thirty-two patients (13.7%, 32 of 233) had a monoclonal gammopathy; 75% of them were benign and were not associated with malignant disorders (24 of 32) while 25% were associated with malignant LPDs or a plasma cell disorder (eight of 32). Two additional subjects without monoclonal gammopathy were diagnosed as having a malignant LPDs. The prevalence of malignant LPDs/plasma cell disorder in individuals with HCV-induced chronic liver disease was 4.3%. No difference was found in terms of disease duration, HCV genotype, viral load, alanine aminotransferase level or histopathologic score between the subjects with or without a monoclonal gammopathy. The presence of mixed cryoglobulinaemia was strongly associated with the presence of an underlying malignant disorder. Hence a monoclonal gammopathy is found in 14% of patients with chronic hepatitis C and is associated with malignant B-cell LPD in more than a quarter of such patients. The prevalence of LPDs in individuals with HCV-induced chronic liver disease is greater than that of the normal healthy population.


Assuntos
Hepatite C Crônica/complicações , Transtornos Linfoproliferativos/complicações , Adulto , Idoso , Alanina Transaminase/sangue , Medula Óssea/patologia , Crioglobulinemia/complicações , Feminino , Genótipo , Hepacivirus/genética , Hepacivirus/isolamento & purificação , Hepatite C Crônica/virologia , Humanos , Fígado/patologia , Transtornos Linfoproliferativos/epidemiologia , Masculino , Pessoa de Meia-Idade , Gamopatia Monoclonal de Significância Indeterminada/complicações , Paraproteinemias/complicações , Plasmócitos/patologia , Prevalência , Fatores de Risco , Carga Viral
8.
Int J Artif Organs ; 25(10): 903-10, 2002 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-12456029

RESUMO

Artificial liver support is a therapeutic option for subjects with fulminant hepatic failure. Results of these studies suggest a possible favourable effect on this condition. The aim of the present review is to evaluate not the results of the different artificial systems available but the methodology used to achieve these results. A computer and manual search of the literature was performed; 832 pertinent references were retrieved. Seventy-seven were full papers reporting the application of artificial liver support in animals or humans (15 RCTs (3 in humans, 12 in animals), 53 uncontrolled phase I trials, 9 case reports). The results of this review indicate that, although the rationale of artificial liver support as shown by animal studies is acceptable, the widespread use in clinical practice is not justified and a controlled design for the studies on artificial liver support systems is mandatory.


Assuntos
Falência Hepática/terapia , Fígado Artificial , Animais , Circulação Extracorpórea , Humanos
9.
J Viral Hepat ; 8(5): 372-6, 2001 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11555195

RESUMO

Hepatitis B virus (HBV) vaccination is recommended for individuals with chronic liver disease. However, the response to standard doses of hepatitis B vaccines in such individuals has been poor. The aim of the present study was to assess the response to high-dose short-interval HBV vaccination in individuals with chronic liver disease of different aetiologies. A total two hundred and 24 subjects with chronic liver disease (138 chronic active hepatitis and 86 cirrhosis) and 26 healthy controls were vaccinated using a high-dose (40 microg) short-interval (monthly for 3 consecutive months) HBV vaccination schedule. One hundred and thirty-eight of the 224 subjects with chronic liver disease (62%) seroconverted to anti-HBs antibody positivity (>10 mIU/mL) after the third dose of vaccine as compared with 24 of the 26 controls (92%) (P < 0.01). The response rate was reduced in individuals with cirrhosis (36/86, 42%), particularly in alcohol-induced cirrhosis (2/17, 12%), as compared with individuals with chronic hepatitis (102/138, 74%) (P < 0.001). No significant HBV vaccination-related adverse effects were seen in individuals with or without cirrhosis as well as in the controls. High-dose short-interval HBV vaccination is safe and efficacious in individuals with chronic liver disease. The response to HBV vaccination is reduced in cirrhotics, particularly those with alcoholic cirrhosis. These data suggest that HBV vaccination should be accomplished early in an individual cause of chronic liver disease prior to the development of cirrhosis.


Assuntos
Vacinas contra Hepatite B/administração & dosagem , Vacinas contra Hepatite B/imunologia , Hepatite B Crônica/imunologia , Hepatite B Crônica/patologia , Feminino , Hepatite/sangue , Hepatite/imunologia , Hepatite/patologia , Hepatite/terapia , Anticorpos Anti-Hepatite/imunologia , Vacinas contra Hepatite B/efeitos adversos , Hepatite B Crônica/sangue , Hepatite B Crônica/terapia , Hepatite C Crônica/sangue , Hepatite C Crônica/imunologia , Hepatite C Crônica/patologia , Hepatite C Crônica/terapia , Humanos , Esquemas de Imunização , Imunoterapia , Cirrose Hepática/sangue , Cirrose Hepática/imunologia , Cirrose Hepática/patologia , Cirrose Hepática/terapia , Masculino , Pessoa de Meia-Idade
11.
J Am Aging Assoc ; 24(2): 51-7, 2001 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23604875

RESUMO

The aim of the present study was to determine whether oxidative stress contributes to aging of the liver in a mouse model. Liver was obtained from young (3-5 months old) and aged (18-24 months old) mice. No age-induced gross changes in liver morphology were detected by light microscopy. Apoptosis was measured using the fragment end labeling of DNA for the immunohistochemical identification of the apoptotic nuclei. The total apoptotic cells represented 1% of the total cells in livers of young mice and 8% in those of aged mice. Among the total apoptotic cells in livers of aged animals, 15% were hepatocytes, 40% sinusoidal endothelial cells, and 45% bile duct cells. Hepatic lipid peroxidation, expressed as malonaldehyde levels, protein oxidation, measured by protein carbonyl content, and DNA oxidation, measured as 8-hydroxy-2'-deoxyguanosine (oxo(8)dG), were significantly increased in the livers of aged animals as compared to younger mice. The apoptotic cells presented elevated levels of oxidized DNA, detected by immunohistochemistry using an antibody directed against oxo(8)dG in serial sections. These results suggest that livers of aged animals presents evidence of increased oxidative injury and apoptosis. Because the apoptotic cells in the aged livers are mostly bile duct cells and sinusoidal endothelial cells, the cells most sensitive to oxidative stress injury, it can be hypothesized that reactive oxygen species-induced apoptosis in these cells contributes to the aging of the liver.

14.
Alcohol Clin Exp Res ; 24(9): 1443-8, 2000 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11003212

RESUMO

BACKGROUND: Burned patients with detectable blood alcohol levels (BAL) show an elevated mortality rate. Interleukin (IL)-6 and reactive oxygen species (ROS) production is stimulated independently by alcohol and burn injury. The aim of the study was to determine whether increasing levels of alcohol differentially enhance the hepatic production of IL-6 and ROS after burn in a murine model of dorsal scald injury. Groups of mice received either saline or alcohol intraperitoneally to reach a BAL of 100 mg/dl or 300 mg/dl at the time of burn (15% total body surface scald) or sham injury. RESULTS: Burn injury alone resulted in a low mortality rate at 24 hr after injury as did the burn group with a BAL of 100 mg/dl (15%), whereas 57% of the mice burned with a BAL of 300 mg/dl did not survive (p = 0.02). Twenty-four hours after burn or sham injury, IL-6 levels were measured by enzyme-linked immunosorbent assay in serum and liver. In the saline-treated group, IL-6 circulating and hepatic levels rose after burn injury (p < 0.03). Circulating IL-6 levels in sham mice increased 1.5-fold in the group with a BAL of 100 mg/dl and 3-fold in those with a BAL of 300 mg/ml (p = 0.005 versus burn-injured, saline-treated). IL-6 hepatic production after burn injury was higher in the mice with a BAL of 300 mg/dl than in those with a BAL of 100 mg/dl and the saline-treated group (p = 0.001). Among the burned mice, alcohol exposure increased hepatic ROS production, measured by lipid peroxidation and protein oxidation, in a dose-dependent manner. CONCLUSIONS: Alcohol enhances in a dose-dependent manner the hepatic production of IL-6 induced by burn injury through the modulation of oxidative stress. The increased mortality rate of mice exposed to alcohol and burn injury may be due to the adverse effect on immune function induced by IL-6 elevation.


Assuntos
Queimaduras/metabolismo , Depressores do Sistema Nervoso Central/administração & dosagem , Etanol/administração & dosagem , Interleucina-6/metabolismo , Fígado/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Animais , Queimaduras/imunologia , Depressores do Sistema Nervoso Central/sangue , Relação Dose-Resposta a Droga , Etanol/sangue , Interleucina-6/imunologia , Fígado/imunologia , Fígado/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Estresse Oxidativo/fisiologia , Espécies Reativas de Oxigênio/imunologia , Espécies Reativas de Oxigênio/metabolismo
15.
Alcohol Clin Exp Res ; 24(9): 1467-73, 2000 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11003215

RESUMO

BACKGROUND: Oxidative stress contributes to the development of liver injury after chronic alcohol intake. Women exhibit greater sensitivity to alcohol-induced liver disease than do men. The aim of the study was to determine the relationship between the sex hormone status of male and female rats and the degree of alcohol-induced oxidative stress in the liver. METHODS: Male and female rats were pair-fed a liquid diet that contained 36% of their total daily calories as ethanol (EtOH group) or maltose (control group). Blood and liver samples were collected at the end of 8 weeks of diet. RESULTS: Male EtOH rats experienced a reduction in plasma testosterone (T) and an increase in estradiol (E2) levels, with an increase in their calculated E2/T ratio with respect to their controls. Malonaldehyde (MDA) levels, an index of lipid peroxidation, and protein carbonyl content, an index of protein oxidation, in the liver were greater among the EtOH groups in females than in males. In males, an inverse correlation was found between hepatic MDA and circulating T levels, and a direct correlation was disclosed between MDA and estradiol levels. In addition, the hepatic histopathological score correlated inversely with the plasma T levels and directly with the calculated E2/T ratio, an index of feminization. CONCLUSIONS: Alcohol-induced oxidative injury, which contributes to hepatic injury in both male and female rats, is enhanced in females compared with males. A role for plasma T levels in protecting male rat liver from ethanol-induced oxidative injury can be hypothesized.


Assuntos
Depressores do Sistema Nervoso Central/farmacologia , Estradiol/sangue , Etanol/farmacologia , Fígado/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Testosterona/sangue , Animais , Feminino , Hormônios Esteroides Gonadais/sangue , Fígado/metabolismo , Masculino , Malondialdeído/metabolismo , Estresse Oxidativo/fisiologia , Ratos , Ratos Sprague-Dawley , Fatores Sexuais
17.
Eur J Gastroenterol Hepatol ; 12(6): 707-9, 2000 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-10912494

RESUMO

A case of cryptogenic cirrhosis in a patient with Turner's syndrome is presented. The individual was admitted for upper gastrointestinal bleeding due to oesophageal varices. After failure of medical treatment, a transjugular intra-hepatic portal systemic shunt was used to control the bleeding. A liver biopsy revealed cirrhosis with minimal necro-inflammatory activity and no steatosis. Immunohistochemical staining for HCV, HBsAg and HBcAg was negative. No other risk factor for liver disease was recognized and none of the known causes of chronic liver disease was identified after a thorough evaluation for such. Turner's syndrome is a genetic disorder due to X chromosome monosomy in which a wide range of congenital anomalies can occur. Cardiac, renal and skeletal anomalies are all well recognized. The possible association of Turner's syndrome with cirrhosis is herein discussed along with a review of the published literature.


Assuntos
Cirrose Hepática/complicações , Síndrome de Turner/complicações , Adulto , Varizes Esofágicas e Gástricas/etiologia , Feminino , Hemorragia Gastrointestinal , Humanos
18.
Am J Gastroenterol ; 95(12): 3529-36, 2000 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11151889

RESUMO

OBJECTIVE: Individuals with chronic hepatitis C who are anti-HBc positive may carry an occult hepatitis B virus (HBV) infection that can affect their response to antiviral therapy. METHODS: In this study the prevalence of anti-HBc and HBV-DNA positivity was assessed in the serum and liver of 285 HCV-RNA-positive subjects treated with interferon-alpha at 5 mU/day for 12 months. The response to interferon (normal ALT and undetectable serum HCV-RNA) was evaluated at three different endpoints: 1) after 6 months; 2) at the end of treatment; and 3) 6 months after interferon discontinuation. RESULTS: Ninety individuals were anti-HBc positive (32%), 2 of these were HBV-DNA positive in serum and 7 in liver (8%). None of the anti-HBc-negative individuals was HBV-DNA positive in serum or liver. The prevalence of cirrhosis was greater in the anti-HBc-positive group than in the anti-HBc-negative group (p < 0.05), whereas HCV-RNA levels were lower. Anti-HBc-positive individuals had a lower response rate to interferon at 6 months and at the end of treatment as compared to anti-HBc-negative subjects (respectively 42% vs 66%, p < 0.01; and 32% vs 57%, p < 0.01). No difference between the two groups in terms of sustained response was detected 6 months after interferon discontinuation. CONCLUSIONS: The prevalence of anti-HBc is high among HCV-positive individuals. HCV-positive individuals who are anti-HBc positive have: 1) a higher prevalence of cirrhosis; 2) lower HCV-RNA levels; and 3) an impaired ability to respond to interferon treatment.


Assuntos
Hepatite B/complicações , Hepatite C Crônica/complicações , Adulto , Antivirais/uso terapêutico , Biópsia por Agulha , DNA Viral/análise , Feminino , Hepacivirus/genética , Hepatite B/epidemiologia , Hepatite B/imunologia , Antígenos de Superfície da Hepatite B/análise , Vírus da Hepatite B/genética , Anticorpos Anti-Hepatite C/imunologia , Hepatite C Crônica/tratamento farmacológico , Hepatite C Crônica/virologia , Humanos , Interferon alfa-2 , Interferon-alfa/uso terapêutico , Fígado/patologia , Fígado/virologia , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase , RNA Viral/análise , Proteínas Recombinantes , Estudos Soroepidemiológicos
19.
Transplantation ; 68(4): 519-22, 1999 Aug 27.
Artigo em Inglês | MEDLINE | ID: mdl-10480410

RESUMO

A major impediment to the wider application of clinical liver transplantation is the paucity of acceptable organs. Most centers refuse organs that come from donors who are hepatitis B core antibody positive because of a fear of transmission of hepatitis B virus (HBV) infection to the recipient. The risk related to the use of such donor organs has never been assessed in an ordered manner. The presence or absence of polymerase chain reaction detectable HBV-DNA in liver tissue of individuals undergoing liver biopsy for clinical reasons was assessed in 133 consecutive patients. A total of 8.2% of these livers resulted positive for HBV-DNA; interestingly the rate was higher among those who were hepatitis B surface antibody positive (12.5%) as compared to those without detectable hepatitis B surface antibody (5.7%). These data provide measures of putative risk for HBV infection in liver transplant recipients associated with the use of organs obtained from a hepatitis B core antibody positive donor.


Assuntos
Anticorpos Anti-Hepatite B/metabolismo , Antígenos do Núcleo do Vírus da Hepatite B/imunologia , Vírus da Hepatite B/isolamento & purificação , Transplante de Fígado , Fígado/imunologia , Fígado/virologia , Adulto , Estudos de Casos e Controles , Feminino , Hepatite B/imunologia , Hepatite B/transmissão , Hepatite B/virologia , Humanos , Transplante de Fígado/efeitos adversos , Transplante de Fígado/imunologia , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Segurança , Doadores de Tecidos
20.
Forum (Genova) ; 9(2): 157-63, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10385710

RESUMO

Liver transplantation is a surgical procedure offered to individuals with irreversible, near fatal liver disease. The timing of both transplantation listing and surgical engraftment are critical factors in the success of this endeavour. To accomplish each and maintain surgical survival rates without prematurely transplanting individuals to achieve excellent outcome statistics is an art that requires knowledge about the procedure and the natural history of the specific liver disease in question. Herein are the views of the transplant team at Loyola University of Chicago as to how this can be accomplished within the framework of the American experience, and the rules and regulations governing donor organ procurement and allocation in the United States.


Assuntos
Hepatopatias/cirurgia , Transplante de Fígado , Seleção de Pacientes , Custos e Análise de Custo , Humanos , Transplante de Fígado/economia , Obtenção de Tecidos e Órgãos , Resultado do Tratamento , Estados Unidos
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