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2.
Aliment Pharmacol Ther ; 25(11): 1283-92, 2007 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-17509096

RESUMO

BACKGROUND: Although chronic hepatitis C virus-infected patients with persistently normal alanine aminotransaminase levels usually have mild liver disease, disease progression can still occur. However, it is uncertain which group of patients is at risk of disease progression. AIM: To examine the severity of liver disease on liver biopsy in Chinese patients with persistently normal alanine aminotransaminase levels, and their disease progression over time. METHODS: Eighty-two patients with persistently normal alanine aminotransaminase levels were followed up longitudinally. The median time of follow-up was 8.1 years. Forty-seven of the 82 patients (57.3%) had a second liver biopsy. RESULTS: At the time of analysis, six of the 82 patients (7.3%) developed decompensated liver cirrhosis. Patients with an initial fibrosis stage F2 or F3 [6/23 (26.1%) vs. 0/59 (0%), P < 0.0001] or inflammatory grade A2 or A3 [5/40 (12.5%) vs. 1/42 (2.4%), P = 0.04] were more likely to develop decompensated liver cirrhosis. On multivariate analysis, initial fibrosis stage F2 or F3 was independently associated with progression to decompensated liver cirrhosis (relative risk 2.3, 95% confidence interval 0.03-2.5, P = 0.02). CONCLUSION: Chinese chronic hepatitis C virus patients with persistently normal alanine aminotransaminase levels with moderate to severe fibrosis at initial evaluation are more likely to develop decompensated liver cirrhosis.


Assuntos
Alanina Transaminase/metabolismo , Hepatite C Crônica/enzimologia , Fígado/patologia , Adulto , Biópsia , China/etnologia , Progressão da Doença , Feminino , Seguimentos , Hepatite C Crônica/etnologia , Hepatite C Crônica/patologia , Humanos , Cirrose Hepática/patologia , Cirrose Hepática/virologia , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Prevalência , Prognóstico , Fatores de Risco
3.
Aliment Pharmacol Ther ; 23(8): 1171-8, 2006 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-16611278

RESUMO

BACKGROUND/AIM: Although 48-week therapy with pegylated-interferons has been shown to be effective for the treatment of chronic hepatitis B virus infection, the efficacy of a shorter duration of therapy with pegylated interferons is unknown. METHOD: We reviewed 53 hepatitis B e antigen positive Chinese patients treated with 48 weeks of pegylated interferon alpha-2a or 24 weeks of pegylated interferon alpha-2b. Sustained virological response was defined as hepatitis B e antigen seroconversion and hepatitis B virus DNA <10(5) copies/mL at week 72. RESULTS: Twenty-nine patients were treated with 48 weeks of pegylated-interferon-alpha-2a and 24 patients with 24 weeks of pegylated-interferon-alpha-2b. At the end-of-therapy, hepatitis B e antigen seroconversion and hepatitis B virus DNA <10(5) copies/mL were similar between the two groups of patients [9/29 (31.0%) vs. 2/24 (8.3%), respectively, P = 0.09]. At week 72, 10 of the 29 patients (34.5%) treated with 48 weeks of pegylated-interferon-alpha-2a compared with two of the 24 patients (8.3%) treated with 24 weeks of pegylated-interferon-alpha-2b had sustained virological response (P = 0.04). By logistic analysis, 48 weeks of pegylated-interferon-alpha-2a was independently associated with sustained virological response (P = 0.04 adjusted hazards-ratio 9.37). CONCLUSION: Further studies are required to determine the optimal duration of therapy with pegylated interferons in chronic hepatitis B.


Assuntos
Anticorpos Antivirais/sangue , Antivirais/administração & dosagem , Antígenos E da Hepatite B/imunologia , Hepatite B Crônica/tratamento farmacológico , Hepatite B Crônica/imunologia , Hepatite B/imunologia , Interferon-alfa/administração & dosagem , Polietilenoglicóis/administração & dosagem , Adulto , Alanina Transaminase/sangue , Antivirais/uso terapêutico , DNA Viral/sangue , Esquema de Medicação , Feminino , Hepatite B/enzimologia , Hepatite B/genética , Humanos , Interferon alfa-2 , Interferon-alfa/uso terapêutico , Masculino , Pessoa de Meia-Idade , Polietilenoglicóis/uso terapêutico , Modelos de Riscos Proporcionais , Proteínas Recombinantes , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento , Carga Viral
4.
Aliment Pharmacol Ther ; 22(3): 243-9, 2005 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-16091062

RESUMO

BACKGROUND: Peptic ulcer disease is mainly caused by Helicobacter pylori infection and the use of non-steroidal anti-inflammatory drugs. AIM: To investigate the trends in the prevalence of peptic ulcer disease, H. pylori infection and non-steroidal anti-inflammatory drug use in uninvestigated dyspeptic patients over recent years in Hong Kong. METHODS: Data from consecutive patients with uninvestigated dyspeptic symptoms referred by family physicians for open access upper endoscopy during 1997 and 2003 were analysed in relation to peptic ulcer disease, H. pylori infection and non-steroidal anti-inflammatory drug use. RESULTS: Among 2700 patients included, 405 (15%) had peptic ulcer disease and 14 (0.5%) had gastric cancer. There was a reduced trend from 1997 to 2003 in the prevalence of peptic ulcer disease (17, 20, 14, 16, 13, 14 and 14%, respectively, chi2 = 5.80, P = 0.016) (mainly because of decrease in duodenal ulcers), H. pylori infection (44, 50, 49, 44, 40, 40, 36 and 43%, respectively, chi2 = 13.55, P < 0.001) and non-steroidal anti-inflammatory drug use (13, 5, 5, 6, 3, 4, 4 and 5% respectively, chi2 = 13.61, P < 0.001). The prevalence of peptic ulcer disease, H. pylori infection and non-steroidal anti-inflammatory drug use between 2001 and 2003 were significantly lower than that between 1997 and 2000 (17% vs. 13%, OR = 0.78, 95% CI: 0.63-0.96, P = 0.020 for peptic ulcer disease; 47% vs. 39%, OR =0.72, 95% CI: 0.60-0.86, P < 0.001 for H. pylori infection; and 6% vs. 4%, OR = 0.56, 95% CI: 0.39-0.82, P = 0.002 for non-steroidal anti-inflammatory drug use). H. pylori infection was associated with both duodenal ulcer (OR = 15.87, 95% CI: 10.60-23.76, P < 0.001) and gastric ulcer (OR = 3.12, 95% CI: 2.15-4.53, P < 0.001) whereas non-steroidal anti-inflammatory drug use was only associated with gastric ulcer (OR = 2.97, 95% CI: 1.70-5.20, P < 0.001). CONCLUSIONS: The prevalence of peptic ulcer disease, mainly duodenal ulcers, was reduced in association with a decreasing trend in the prevalence of H. pylori infection and non-steroidal anti-inflammatory drug use from 1997 to 2003.


Assuntos
Dispepsia/epidemiologia , Infecções por Helicobacter/epidemiologia , Helicobacter pylori , Úlcera Péptica/epidemiologia , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Anti-Inflamatórios não Esteroides/administração & dosagem , Anti-Inflamatórios não Esteroides/efeitos adversos , Úlcera Duodenal/epidemiologia , Úlcera Duodenal/microbiologia , Dispepsia/microbiologia , Medicina de Família e Comunidade , Feminino , Infecções por Helicobacter/complicações , Hong Kong/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Úlcera Péptica/microbiologia , Prevalência , Encaminhamento e Consulta , Fatores Sexuais , Neoplasias Gástricas/epidemiologia , Neoplasias Gástricas/microbiologia
5.
Aliment Pharmacol Ther ; 16(5): 929-36, 2002 May.
Artigo em Inglês | MEDLINE | ID: mdl-11966501

RESUMO

BACKGROUND: Complications of endoscopic sphincterotomy are closely related to the endoscopic technique. To date, there have been no studies to indicate that aspirin increases the risk of bleeding after endoscopic sphincterotomy. AIM: To compare the incidence of post-sphincterotomy bleeding in patients with and without prior aspirin therapy. METHODS: Eight hundred and four patients were recruited into this retrospective study: 124 patients continued to take aspirin until the day of sphincterotomy (Group 1), 116 patients had their aspirin discontinued for 1 week before sphincterotomy (Group 2) and 564 patients had never taken aspirin (Group 3). The primary outcome analysed was the incidence of post-sphincterotomy bleeding. RESULTS: Sixty-seven patients (8.3%) developed post-sphincterotomy bleeding. The incidences of post-sphincterotomy bleeding in Groups 1, 2 and 3 were 9.7%, 9.5% and 3.9%, respectively. Group 1 showed significantly increased post-sphincterotomy bleeding when compared with Group 3 (P=0.01), and the risk was also significantly increased when Group 2 was compared with Group 3 (P=0.01). However, there was no significant difference in post-sphincterotomy bleeding between Groups 1 and 2 (P=0.96). CONCLUSIONS: Aspirin therapy increased the risk of post-sphincterotomy bleeding. Withholding aspirin for 1 week before endoscopic sphincterotomy did not seem to decrease the risk of post-sphincterotomy bleeding.


Assuntos
Anti-Inflamatórios não Esteroides/efeitos adversos , Aspirina/efeitos adversos , Hemorragia Pós-Operatória/induzido quimicamente , Esfinterotomia Endoscópica , Idoso , Anti-Inflamatórios não Esteroides/administração & dosagem , Aspirina/administração & dosagem , Comorbidade , Feminino , Humanos , Incidência , Masculino , Complicações Pós-Operatórias , Hemorragia Pós-Operatória/prevenção & controle , Estudos Retrospectivos , Fatores de Risco
6.
Aliment Pharmacol Ther ; 15(10): 1633-7, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-11564004

RESUMO

BACKGROUND: Acute cholangitis varies in severity from a mild form to severe cases which require urgent biliary decompression. AIM: This study was undertaken in order to develop a prognostic scoring system that can be used to predict which patients are likely to require emergency endoscopic retrograde cholangiopancreatogram (ERCP) upon admission. METHODS: This is a prospective study of 142 consecutive patients with acute cholangitis. Emergency ERCP was performed in patients who did not respond to medical therapy. RESULTS: Thirty-one patients (21.8%) required emergency ERCP. A maximum heart rate of more than 100/min, albumin of less than 30 g/L, bilirubin of more than 50 micromol/L and prothrombin time of more than 14 s on admission were associated with failure of medical treatment and the need for emergency ERCP (P=0.001, < 0.001, 0.006 and 0.004, respectively). By using these four factors in a scoring system, 50.7% of those with a score of one or more required emergency ERCP compared with 1.5% of those with none of the four risk factors (P < 0.001). This scoring system has a sensitivity of 96.8% and a specificity of 59.6%. CONCLUSIONS: As patients with severe acute cholangitis show a higher mortality, we recommend that emergency ERCP be performed in patients with one or more of the four prognostic factors.


Assuntos
Colangiopancreatografia Retrógrada Endoscópica , Colangite/fisiopatologia , Colangite/cirurgia , Descompressão Cirúrgica , Emergências , Doença Aguda , Idoso , Idoso de 80 Anos ou mais , Albuminas/análise , Bilirrubina/sangue , Colangite/diagnóstico , Feminino , Frequência Cardíaca , Humanos , Masculino , Valor Preditivo dos Testes , Prognóstico , Estudos Prospectivos , Tempo de Protrombina , Fatores de Risco , Sensibilidade e Especificidade , Resultado do Tratamento
7.
Aliment Pharmacol Ther ; 17(2): 289-96, 2003 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-12534415

RESUMO

BACKGROUND: There is some uncertainty as to whether high-risk patients with difficult common bile duct stones should be subjected to a further endoscopic procedure for the complete removal of stones by electrohydraulic lithotripsy or whether permanent biliary stenting should be performed. AIM: To compare the outcome of permanent biliary stenting with electrohydraulic lithotripsy in this group of patients. METHODS: In a prospective study, 36 patients with difficult common bile duct stones were investigated: 19 underwent double pigtail insertion (stent group), whereas 17 underwent complete clearance of stones (electrohydraulic lithotripsy). RESULTS: In the electrohydraulic lithotripsy group, successful stone clearance was achieved in 76.5%, whereas, in the stent group, the success of stenting was 94.7%. A significant difference was detected in the actuarial incidence of recurrent acute cholangitis when the electrohydraulic lithotripsy group was compared with the stent group [one patient (7.7%) vs. 12 patients (63.2%), respectively; P = 0.002, log rank test]. A significant difference was detected in the actuarial frequency of mortality between the electrohydraulic lithotripsy and stent groups [seven patients (41.2%) vs. 14 patients (73.7%), respectively; P = 0.01, log rank test]. CONCLUSIONS: The removal of difficult common bile duct stones by electrohydraulic lithotripsy and further endoscopic retrograde cholangiopancreatography has a high success rate and a low complication rate even in the elderly.


Assuntos
Colangiopancreatografia Retrógrada Endoscópica/métodos , Cálculos Biliares/terapia , Litotripsia/métodos , Stents , Idoso , Idoso de 80 Anos ou mais , Colangiopancreatografia Retrógrada Endoscópica/efeitos adversos , Colangite/etiologia , Feminino , Seguimentos , Humanos , Masculino , Recidiva , Stents/efeitos adversos
8.
Aliment Pharmacol Ther ; 16(12): 2037-42, 2002 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-12452935

RESUMO

AIMS: To study the prevalence, clinical characteristics and long-term outcome of oesophagitis in Chinese patients. METHODS: Clinical and endoscopic data were collected prospectively from consecutive patients who underwent upper endoscopy between 1997 and 2001. Patients with endoscopic oesophagitis were graded according to the Los Angeles system and analysed according to their clinical presentation, endoscopic details, Helicobacter pylori status, non-steroidal anti-inflammatory drug history, co-morbidity and mortality. RESULTS: A total of 22,628 upper endoscopies were performed in 16,606 patients. Of these, 631 (3.8%) had endoscopic oesophagitis, 14 had benign oesophageal stricture (0.08%) and 10 had Barrett's oesophagus (0.06%). Most patients (94%) had either Los Angeles grade A or grade B oesophagitis. Patients who died during follow-up had a significantly higher incidence of co-morbid illness (100% vs. 63%, P < 0.001). By Cox regression analysis, the presence of gastrointestinal bleeding (P = 0.008), advanced age (P = 0.004) and the use of Ryle's tube (P = 0.043) were identified to be independent factors associated with mortality. CONCLUSIONS: Complicated gastro-oesophageal reflux disease is uncommon in the Asian population. Advanced age, use of Ryle's tube and the presence of gastrointestinal bleeding are associated with a poor long-term outcome, which is a reflection of the severe underlying co-morbidity.


Assuntos
Esofagite/epidemiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Esôfago de Barrett/epidemiologia , Causas de Morte , Comorbidade , Estenose Esofágica/epidemiologia , Esofagite/microbiologia , Esofagoscopia , Feminino , Seguimentos , Infecções por Helicobacter/complicações , Helicobacter pylori/isolamento & purificação , Hong Kong/epidemiologia , Humanos , Masculino , Pessoa de Meia-Idade , Prevalência , Prognóstico , Estudos Prospectivos , Análise de Regressão , Fatores de Risco , Índice de Gravidade de Doença
9.
Aliment Pharmacol Ther ; 15(12): 1959-65, 2001 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-11736727

RESUMO

BACKGROUND: Rabeprazole is a new proton pump inhibitor with more potent acid suppressive and anti-Helicobacter effects. AIM: To compare two different regimens of rabeprazole-based triple therapy vs. 7-day omeprazole-based triple therapy for the eradication of Helicobacter pylori infection. METHOD: Patients with proven H. pylori infection were randomized to receive: (i) 7-day rabeprazole, 10 mg, amoxicillin, 1000 mg, and clarithromycin, 500 mg, all twice daily; (ii) 3-day rabeprazole, 20 mg, amoxicillin, 1000 mg, and clarithromycin, 500 mg, all twice daily; or (iii) 7-day omeprazole, 20 mg, amoxicillin, 1000 mg, and clarithromycin, 500 mg, all twice daily. Endoscopy (CLO test, histology) was performed before randomization and 6 weeks after drug treatment. RESULTS: One hundred and seventy-three patients were randomized. H. pylori eradication rates (intention-to-treat, n=173/per protocol, n=167) were 88%/91% for 7-day rabeprazole-based therapy, 72%/72% for 3-day rabeprazole-based therapy and 82%/89% for 7-day omeprazole-based therapy, respectively. The per protocol eradication rate was significantly better in the 7-day rabeprazole-based therapy and 7-day omeprazole-based therapy groups when compared to the 3-day rabeprazole-based therapy group (P=0.01 and P=0.04, respectively). Compliance was excellent and all three regimens were well tolerated. CONCLUSIONS: The efficacy of seven-day rabeprazole-based triple therapy is similar to 7-day omeprazole-based triple therapy for the eradication of H. pylori infection.


Assuntos
Antiulcerosos/uso terapêutico , Benzimidazóis/uso terapêutico , Infecções por Helicobacter/tratamento farmacológico , Helicobacter pylori/efeitos dos fármacos , Omeprazol/uso terapêutico , 2-Piridinilmetilsulfinilbenzimidazóis , Adulto , Idoso , Idoso de 80 Anos ou mais , Antiulcerosos/efeitos adversos , Benzimidazóis/efeitos adversos , Diarreia/induzido quimicamente , Resistência a Medicamentos , Quimioterapia Combinada , Úlcera Duodenal/prevenção & controle , Exantema/induzido quimicamente , Feminino , Infecções por Helicobacter/microbiologia , Helicobacter pylori/isolamento & purificação , Humanos , Masculino , Pessoa de Meia-Idade , Omeprazol/efeitos adversos , ATPases Translocadoras de Prótons/antagonistas & inibidores , Rabeprazol , Úlcera Gástrica/prevenção & controle , Fatores de Tempo , Resultado do Tratamento
10.
Aliment Pharmacol Ther ; 19(11): 1153-8, 2004 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-15153168

RESUMO

BACKGROUND: An increasing proportion of the general population across the Western World now survives to an advanced age. However, there is limited data on the outcome of therapeutic endoscopic retrograde cholangiopancreatography in patients above 90 years of age with severe acute cholangitis. AIM: To determine the relative frequency of postendoscopic retrograde cholangiopancreatography complication in this group of patients. METHODS: The postendoscopic retrograde cholangiopancreatography complications related outcome of 64 patients aged 90 years and above (Group 1) with severe acute cholangitis were retrospectively compared with 165 patients under the age of 90 years (Group 2). RESULTS: The postendoscopic retrograde cholangiopancreatography complication rate was 4.7% (three patients) in Group 1 and 7.3% (12 patients) in Group 2. There was no significant difference in the postendoscopic retrograde cholangiopancreatography complication rate between the two groups (P = 0.567). The relative frequency of 30-day mortality was 7.8% (five patients) in Group 1 and 4.2% (seven patients) in Group 2 (P = 0.227). CONCLUSION: Urgent biliary decompression with endoscopic retrograde cholangiopancreatography in patients 90 years of age and older with severe acute cholangitis is a safe and effective procedure in the hands of highly skilled endoscopists and is not associated with increased morbidity or mortality even in this group of high risk patients.


Assuntos
Colangiopancreatografia Retrógrada Endoscópica/métodos , Colangite/terapia , Doença Aguda , Colangiopancreatografia Retrógrada Endoscópica/mortalidade , Colangite/mortalidade , Emergências , Feminino , Humanos , Masculino , Retratamento , Estudos Retrospectivos , Resultado do Tratamento
11.
J Clin Pharmacol ; 41(6): 691-4, 2001 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-11402639

RESUMO

The authors report two cases of hepatotoxicity induced by low molecular weight heparin. A 26-year-old woman and a 33-year-old man were treated with low molecular weight heparin for pulmonary embolism and cerebral infarction, respectively. They both developed derangement in liver function tests a few days after commencement of the low molecular weight heparin. The derangement in liver function tests was associated with a decreased serum complement 3 activity. Their liver functions recovered over a period of 2 to 3 months after low molecular weight heparin was stopped. Liver biopsy in the woman demonstrated balloon degeneration with scattered foci of hepatocytic necrosis, suggesting a complement-mediated hepatocellular damage.


Assuntos
Doença Hepática Induzida por Substâncias e Drogas , Enoxaparina/efeitos adversos , Fígado/efeitos dos fármacos , Nadroparina/efeitos adversos , Adulto , Anticoagulantes/efeitos adversos , Infarto Cerebral/tratamento farmacológico , Complemento C3/metabolismo , Feminino , Humanos , Fígado/patologia , Fígado/fisiopatologia , Hepatopatias/patologia , Hepatopatias/fisiopatologia , Testes de Função Hepática , Masculino , Embolia Pulmonar/tratamento farmacológico
12.
Clin Nephrol ; 56(5): 407-10, 2001 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11758015

RESUMO

We report on two patients who developed rapidly progressive demyelinating neuropathy within 6 to 10 weeks after the initiation of continuous ambulatory peritoneal dialysis. The neuropathy in one patient resolved after kidney transplantation while that of the other patient improved with immunosuppressive therapy. The close temporal relationship between the initiation of peritoneal dialysis and the onset of neuropathy suggests that these two events may be causally related.


Assuntos
Doenças Desmielinizantes/etiologia , Nefropatias/etiologia , Diálise Peritoneal Ambulatorial Contínua/efeitos adversos , Adulto , Doenças Desmielinizantes/terapia , Progressão da Doença , Humanos , Imunossupressores/uso terapêutico , Nefropatias/terapia , Transplante de Rim , Masculino
13.
Singapore Med J ; 52(10): e217-9, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22009412

RESUMO

Eosinophilic gastrointestinal disorders (EGIDs) primarily affect the gastrointestinal tract. EGIDs have a broad spectrum of presentations, characterised by prominent eosinophilic infiltration through a variable depth in the gastrointestinal tract in the absence of a known cause for eosinophilia. EGIDs include eosinophilic oesophagitis, eosinophilic gastritis, eosinophilic gastroenteritis, eosinophilic enteritis and eosinophilic colitis. Here, we report EGID in a woman who had co-existing uterine leiomyomas. Her EGID resolved after resection of the leiomyomas. She remained asymptomatic on follow-up 13 months after the myomectomy, with resolution of the eosinophilic infiltrate in the gastrointestinal tract.


Assuntos
Enterite/patologia , Eosinofilia/diagnóstico , Gastrite/diagnóstico , Leiomioma/cirurgia , Neoplasias Uterinas/cirurgia , Enterite/complicações , Enterite/diagnóstico , Enterite/cirurgia , Eosinofilia/complicações , Eosinofilia/cirurgia , Feminino , Seguimentos , Gastrite/complicações , Gastrite/cirurgia , Humanos , Histerectomia/métodos , Leiomioma/complicações , Leiomioma/patologia , Pessoa de Meia-Idade , Recuperação de Função Fisiológica , Medição de Risco , Resultado do Tratamento , Neoplasias Uterinas/complicações , Neoplasias Uterinas/patologia
14.
Singapore Med J ; 52(9): e177-9, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21947159

RESUMO

Intestinal lymphangiectasia may occur as a primary congenital disorder or a secondary disorder. Secondary lymphangiectasia could be associated with diseases such as abdominal carcinoma, retroperitoneal fibrosis or chronic pancreatitis. This is the first reported case of intestinal lymphangiectasia associated with recurrent histiocytosis X. This case report illustrates the need for more prospective, well-designed studies to determine the natural history and outcome of intestinal lymphangiectasia in the duodenum. Hopefully, these studies will also help clinicians identify which group of patients with intestinal lymphangiectasia in the duodenum is more likely to have a secondary cause.


Assuntos
Histiocitose de Células de Langerhans/complicações , Histiocitose de Células de Langerhans/diagnóstico , Linfangiectasia Intestinal/complicações , Linfangiectasia Intestinal/diagnóstico , Adulto , Biópsia , China , Duodeno/patologia , Humanos , Masculino , Tomografia por Emissão de Pósitrons/métodos , Estudos Prospectivos , Recidiva , Tomografia Computadorizada por Raios X/métodos
15.
Anaesthesia ; 61(1): 29-31, 2006 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16409339

RESUMO

We studied the hypothermic effect of adding 150 microg morphine during spinal anaesthesia in 60 parturients scheduled for elective caesarean section. All the parturients received intrathecal injection of a solution containing 150 mug morphine or normal saline in addition to 10-12 mg hyperbaric bupivacaine 0.5%. In both groups, a significant decrease in body temperature was noted. There was no difference in the area under the curve for temperature against time for the two groups; however, the maximum decrease in temperature from baseline was significantly larger after morphine than after saline injection (mean (SD) 1.11 (0.61) degrees C vs 0.76 (0.39) degrees C, respectively; p = 0.01) and the time to nadir temperature was significantly longer (59.5 (17.6) min vs 50.4 (15.9) min, respectively; p = 0.047). The lowest temperature observed in the morphine group was 34.3 degrees C. We conclude that intrathecal injection of 150 microg morphine intensified the intra-operative hypothermic effect of bupivacaine spinal anaesthesia for caesarean section.


Assuntos
Anestesia Obstétrica/efeitos adversos , Raquianestesia/efeitos adversos , Cesárea , Hipotermia/induzido quimicamente , Morfina/efeitos adversos , Adulto , Analgésicos Opioides/efeitos adversos , Anestesia Obstétrica/métodos , Raquianestesia/métodos , Anestésicos Locais/efeitos adversos , Área Sob a Curva , Temperatura Corporal/efeitos dos fármacos , Bupivacaína/efeitos adversos , Método Duplo-Cego , Sinergismo Farmacológico , Feminino , Humanos , Complicações Intraoperatórias/induzido quimicamente , Gravidez
16.
Am J Transplant ; 6(7): 1600-8, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16827860

RESUMO

It is uncertain whether occult hepatitis B virus co-infection will hasten progressive liver disease in chronic hepatitis C patients after liver transplantation. This study evaluated fibrosis progression and severe fibrosis in 118 consecutive hepatitis B surface antigen-negative patients with virological and histological evidence of recurrent chronic hepatitis C infection co-infected with occult hepatitis B virus after liver transplantation. HBV DNA was detected from serum at the time of recurrent chronic hepatitis C infection by polymerase chain reaction. Each subject underwent a repeat liver biopsy 5 years post-liver transplantation. Occult hepatitis B virus co-infection was present in 41 of the 118 (34.7%) patients. At 5 years post-liver transplantation, 13 of the 41 occult hepatitis B virus co-infected patients compared with 16 of the 77 patients without occult hepatitis B virus co-infection developed fibrosis progression (31.7% vs. 20.8%, respectively, p = 0.39). Eight of 41 the occult hepatitis B virus co-infected patients compared with 13 of the 77 patients without occult hepatitis B virus co-infection had severe fibrosis (19.5% vs. 16.9%, respectively, p = 0.97). In conclusion, occult hepatitis B virus co-infection in patients with recurrent chronic hepatitis C infection was not associated with accelerated fibrosis progression or severe fibrosis after liver transplantation.


Assuntos
Hepacivirus/fisiologia , Vírus da Hepatite B/fisiologia , Hepatite C Crônica/diagnóstico , Hepatite C Crônica/cirurgia , Transplante de Fígado , Adulto , Biópsia , DNA Viral/sangue , Progressão da Doença , Feminino , Rejeição de Enxerto/imunologia , Hepatite C Crônica/imunologia , Hepatite C Crônica/virologia , Humanos , Transplante de Fígado/imunologia , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
17.
Br J Clin Pharmacol ; 59(3): 291-7, 2005 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-15752374

RESUMO

AIM: Lipid lowering therapy with 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase inhibitors is increasingly used for the prevention of cardiovascular events, but they should be used with caution in patients with impaired liver function. We therefore studied the pharmacokinetics of pitavastatin in patients with liver cirrhosis. METHODS: Plasma concentrations of pitavastatin were determined after administration of 2 mg single-dose pitavastatin to 12 male patients with liver cirrhosis (six Child-Pugh grade A and six grade B). These results were compared with the single-dose pharmacokinetic results obtained from six male volunteers without liver disease. RESULTS: Administration of 2 mg single-dose pitavastatin to patients with Child-Pugh grade A and grade B cirrhosis resulted in a 1.19- and 2.47-fold increase in Cmax and 1.27- and 3.64-fold increase in AUCt, respectively, when compared with normal subjects. The geomean Cmax of pitavastatin was 59.5 ng ml(-1), 70.7 ng ml(-1) and 147.1 ng ml(-1) in the control, Child-Pugh grade A and Child-Pugh grade B groups, respectively. The geomean AUCt of pitavastatin in the three groups was 121.2 ng h(-1) ml(-1), 154.2 ng h(-1) ml(-1) and 441.7 ng h(-1) ml(-1), respectively. The geomean Cmax of pitavastatin lactone was 20.3 ng ml(-1), 19.1 ng ml(-1) and 9.9 ng ml(-1) in the control, Child-Pugh grade A and grade B groups, respectively. The AUCt of pitavastatin lactone was 120.2 h(-1) ml(-1), 108.8 h(-1) ml(-1) and 87.5 h(-1) ml(-1), respectively. CONCLUSION: The plasma concentration of pitavastatin is increased in patients with liver cirrhosis. In such patients, caution is required, although dose reduction may not be necessary in Child-Pugh A cirrhosis.


Assuntos
Inibidores Enzimáticos/farmacocinética , Cirrose Hepática/metabolismo , Quinolinas/farmacocinética , Adulto , Área Sob a Curva , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Tempo
18.
Gut ; 54(11): 1597-603, 2005 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-16000641

RESUMO

BACKGROUND: The hepatic outcome of hepatitis B surface antigen (HBsAg) positive patients undergoing chemotherapy after withdrawal of pre-emptive lamivudine is unknown. AIMS: To examine the occurrence of hepatitis B virus (HBV) reactivation after withdrawal of pre-emptive lamivudine. METHODS: Pre-emptive lamivudine was started one week before initiation of chemotherapy in 46 consecutive HBsAg positive patients and continued for the entire duration of chemotherapy. Pre-emptive lamivudine was stopped at a median 3.1 (range 3.0-3.4) months after completion of chemotherapy. Patients were longitudinally followed up after withdrawal of pre-emptive lamivudine. RESULTS: Median time of follow up after withdrawal of lamivudine was 25.7 (range 5.7-75.7) months. Eleven of the 46 patients (23.9%) developed HBV reactivation after withdrawal of pre-emptive lamivudine. Eight of the 16 patients with high pre-chemotherapy HBV DNA (> or =10(4) copies/ml) compared with three of the 30 patients with low pre-chemotherapy HBV DNA (<10(4) copies/ml) developed HBV reactivation (50.0% v 10.0%, respectively; p<0.001). Hepatitis B e antigen positive patients were also more likely to develop HBV reactivation (5/11 (45.5%) v 6/35 (17.1%), respectively; p = 0.041). A high pre-chemotherapy HBV DNA (> or =10(4) copies/ml) was the most important risk factor for HBV reactivation after withdrawal of pre-emptive lamivudine on Cox proportional hazards analysis (relative risk 16.13, (95% confidence interval 2.99-87.01; p = 0.001). CONCLUSIONS: HBV reactivation is more likely to occur in patients with high pre-chemotherapy HBV DNA after withdrawal of pre-emptive lamivudine. A more prolonged course of antiviral therapy may be necessary in these patients after completion of chemotherapy in order to reduce post-chemotherapy HBV reactivation.


Assuntos
Neoplasias Hematológicas/tratamento farmacológico , Vírus da Hepatite B/fisiologia , Hepatite B/prevenção & controle , Lamivudina/uso terapêutico , Ativação Viral/efeitos dos fármacos , Adulto , Idoso , Antineoplásicos/efeitos adversos , Antivirais/uso terapêutico , DNA Viral/análise , Feminino , Seguimentos , Neoplasias Hematológicas/complicações , Hepatite B/imunologia , Hepatite B/virologia , Antígenos de Superfície da Hepatite B/sangue , Vírus da Hepatite B/isolamento & purificação , Humanos , Hospedeiro Imunocomprometido , Masculino , Pessoa de Meia-Idade
19.
Gut ; 52(11): 1644-8, 2003 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-14570736

RESUMO

INTRODUCTION: Information on treatment outcomes with interferon plus ribavirin combination therapy in chronic hepatitis C patients with normal alanine aminotransaminase (ALT) levels is limited. AIM: The aims of this study were to assess outcomes of treatment with interferon plus ribavirin in patients with normal ALT levels (normal ALT group, n=52) compared with those with elevated ALT levels (raised ALT group, n=53), and to document the rate at which patients with normal ALT levels have an apparent worsening of disease, as shown by increases in ALT levels. RESULTS: At the end of treatment (week 48), 31 patients (59.6%) in the normal ALT group and 30 patients (56.6%) in the raised ALT group had undetectable hepatitis C virus (HCV) RNA (p=0.75). A sustained virological response (SVR) was achieved in 20 patients (38.5%) in the normal ALT group and in 21 patients (39.6%) in the raised ALT group (p=0.90). Patients were subsequently followed up for a median of 29.8 (interquartile range 25th-75th percentile (IQR) 20.8-36.2) months in the normal ALT group and for a median of 26.1 (IQR 17.7-36.3) months in the raised group (p=0.20) after week 72 of treatment. Among patients without SVR in the normal ALT group, only three patients (9.4%) developed persistently raised ALT levels following therapy. CONCLUSIONS: Combination therapy with interferon plus ribavirin is associated with a similar SVR in patients with normal ALT levels compared with those with elevated ALT levels. In patients with normal ALT levels, virological non-response to therapy results in new elevations in serum ALT levels in a small minority only.


Assuntos
Alanina Transaminase/sangue , Antivirais/uso terapêutico , Hepatite C Crônica/tratamento farmacológico , Interferon-alfa/uso terapêutico , Ribavirina/uso terapêutico , Administração Oral , Adulto , Antivirais/administração & dosagem , Quimioterapia Combinada , Feminino , Hepatite C Crônica/enzimologia , Hepatite C Crônica/virologia , Humanos , Injeções Subcutâneas , Interferon-alfa/administração & dosagem , Masculino , Pessoa de Meia-Idade , RNA Viral/análise , Estudos Retrospectivos , Ribavirina/administração & dosagem , Resultado do Tratamento
20.
J Viral Hepat ; 8(6): 459-64, 2001 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11703578

RESUMO

The clinical outcome of acute pancreatitis complicating acute exacerbation of chronic hepatitis virus B (HBV) infection has never been studied. Ninety patients with acute pancreatitis were recruited. Five patients (5.6%) (Group 1) had acute pancreatitis superimposed on acute exacerbation of chronic HBV infection with no other causes of acute pancreatitis being identified. The clinical outcome of these five patients was compared to the 85 non-HBV infected patients (Group 2) with acute pancreatitis. A third group (Group 3) of patients (n=406) with acute exacerbation of chronic HBV infections without acute pancreatitis was also recruited for comparison. Group 1 had a significantly higher mortality rate (4 out of 5, 80%) compared to those of Group 2 (13 out of 85, 15.3%, P=0.0041) and Group 3 (9 out of 406, 2.2%, P < 0.0001). In Group 1 patients, the acute pancreatitis occurred during the initial rise of HBV DNA with relatively low or normal level of alanine aminotransferase (ALT) in two patients, during the rise of ALT with declining level of HBV DNA in one patient, and during the cholestatic phase of the acute exacerbation in one patient. The acute pancreatitis was clinically silent and only diagnosed by computerized tomography in the remaining patient. Direct viral damage and/or immunological attack to the pancreatic tissue were probably the underlying pathogenesis of the acute pancreatitis in these patients. In conclusion, acute pancreatitis complicating acute exacerbation of chronic HBV infection carried an extremely poor prognosis with high mortality.


Assuntos
Hepatite B Crônica/complicações , Pancreatite/etiologia , Doença Aguda , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pancreatite/diagnóstico , Prognóstico , Índice de Gravidade de Doença
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