Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 78
Filtrar
1.
BMC Nephrol ; 22(1): 231, 2021 06 19.
Artigo em Inglês | MEDLINE | ID: mdl-34147076

RESUMO

BACKGROUND: Common subtypes seen in Chinese patients with membranous nephropathy (MN) include idiopathic membranous nephropathy (IMN) and hepatitis B virus-related membranous nephropathy (HBV-MN). However, the morphologic differences are not visible under the light microscope in certain renal biopsy tissues. METHODS: We propose here a deep learning-based framework for processing hyperspectral images of renal biopsy tissue to define the difference between IMN and HBV-MN based on the component of their immune complex deposition. RESULTS: The proposed framework can achieve an overall accuracy of 95.04% in classification, which also leads to better performance than support vector machine (SVM)-based algorithms. CONCLUSION: IMN and HBV-MN can be correctly separated via the deep learning framework using hyperspectral imagery. Our results suggest the potential of the deep learning algorithm as a new method to aid in the diagnosis of MN.


Assuntos
Aprendizado Profundo , Diagnóstico por Computador/métodos , Glomerulonefrite Membranosa/classificação , Glomerulonefrite Membranosa/diagnóstico , Adulto , Artefatos , Biópsia , Diagnóstico Diferencial , Estudos de Viabilidade , Feminino , Glomerulonefrite Membranosa/patologia , Glomerulonefrite Membranosa/virologia , Humanos , Masculino
2.
Nephron ; 145(2): 113-122, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33561853

RESUMO

BACKGROUND: Hepatitis B virus-associated glomerulonephritis (HBV-GN) can occur in patients with negative HBV serological antigens. Little is known about the treatment of seronegative HBV-GN (sn HBV-GN). The aim of this prospective study was to evaluate the efficacy and safety of corticosteroids in the treatment of sn HBV-GN. METHODS: Twenty-six patients with nephrotic syndrome induced by seronegative HBV-associated membranous nephropathy were enrolled. The patients were given methylprednisolone (0.8 mg/kg/day) for 12-24 weeks, tapered by a 2-mg reduction every 1-3 months. Patients were followed up for 6-36 months. Complete remission (CR) was defined as proteinuria <0.3 g/24 h. Partial remission (PR) was defined as proteinuria of 0.3-3.5 g/24 h that was reduced ≥50% of the baseline level. RESULTS: The effective remission (including CR and PR) rates of nephrotic syndrome were 23.1%, 61.5%, 73.1%, 76.2%, 90.5%, and 81.0%, respectively, after 1, 3, 6, 12, 24, and 36 months. Nineteen patients achieved effective remission after 11.68 ± 7.15 months. The level of serum albumin improved from 24.34 ± 6.71 g/L at baseline to 39.61 ± 7.45 g/L at the 36th month significantly. After treatment, the level of serum Cr was similar to the baseline. Only 2 patients relapsed. The primary adverse reaction was infection. None of the patients showed evidence of HBV replication. CONCLUSION: The long-term middle-dose corticosteroid therapy without antiviral drugs is effective and safe for membranous sn HBV-GN patients. For sn HBV-GN patients, the monitoring of HBV DNA and HBV markers in the serum is necessary during the corticosteroid monotherapy. TRIAL REGISTRATION: The Chinese Clinical Trial Registry (ChiCTR1900022518).


Assuntos
Glomerulonefrite Membranosa/diagnóstico , Glucocorticoides/uso terapêutico , Metilprednisolona/uso terapêutico , Síndrome Nefrótica/tratamento farmacológico , Adolescente , Adulto , Idoso , Biópsia , DNA Viral/isolamento & purificação , Feminino , Glomerulonefrite Membranosa/complicações , Glomerulonefrite Membranosa/patologia , Glomerulonefrite Membranosa/virologia , Vírus da Hepatite B/genética , Vírus da Hepatite B/isolamento & purificação , Humanos , Masculino , Pessoa de Meia-Idade , Síndrome Nefrótica/complicações , Estudos Prospectivos , Resultado do Tratamento , Adulto Jovem
3.
Rev. esp. enferm. dig ; 112(11): 843-849, nov. 2020. tab, graf
Artigo em Inglês | IBECS | ID: ibc-198768

RESUMO

OBJECTIVE: hepatitis B virus-associated membranous nephropathy (HBV-MN) is the most common pathological type of hepatitis B virus-associated glomerulonephritis. This study evaluated the efficacy of entecavir antiviral therapy for HBV-MN patients due to the intolerable side effects of interferon-alpha and high incidence rate of drug-resistance in lamivudine therapy. METHOD: thirty-two patients with HBV-MN were identified by biopsy and treated with entecavir for 52 weeks. These patients were followed up to evaluate outcomes of entecavir-treatment. Descriptive statistics were used to summarize patient demographics and treatment outcomes. RESULTS: entecavir treatment reduced 24-h urinary protein excretion. The total probability of partial proteinuria and complete remission at 24 and 52 weeks was 53.1 and 78.1 %, respectively. A decrease of circulating HBV-DNA was observed in all patients with active HBV replication. The significant decrease of 24-h urinary protein began at 12 weeks, as early as the decrease of serum HBV-DNA level. The serum HBV DNA titers at baseline and after 52 weeks of treatment were 4.3 ± 2.8 log10 and 2.3 ± 1.7 log10, respectively. Meanwhile, eGFR increased from 100.3 ± 20.5 ml/min/1.73 m2 at baseline to 107.7 ± 15.9 ml/min/1.73 m2 after 52 weeks of treatment. The serum alanine aminotransferase level (ALT) gradually decreased to normal during entecavir antiviral treatment. CONCLUSIONS: entecavir treatment in HBV-MN patients was carefully described. Complete remission and HBV replication suppression were induced by entecavir treatment in HBV-MN patients. Patients with high serum creatinine (Scr), ALT and low eGFR levels benefit more from entecavir treatment. Entecavir therapy is well tolerated by patients and no adverse reactions were observed


No disponible


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Glomerulonefrite Membranosa/tratamento farmacológico , Glomerulonefrite Membranosa/virologia , Guanina/análogos & derivados , Antivirais/uso terapêutico , Vírus da Hepatite B/efeitos dos fármacos , Estudos Retrospectivos , Resultado do Tratamento , Fatores de Tempo , Proteinúria/urina , Taxa de Filtração Glomerular , Glomerulonefrite Membranosa/fisiopatologia , Vírus da Hepatite B/isolamento & purificação , Alanina Transaminase/sangue , Creatinina/sangue , DNA Viral
5.
Saudi J Kidney Dis Transpl ; 28(2): 355-361, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28352020

RESUMO

Hepatitis B and C are known to affect kidneys in a number of ways. Glomerular diseases associated with hepatitis B and C include membranous nephropathy (MN), membranoproliferative glomerulonephritis (MPGN), focal segmental glomerulosclerosis, immunoglobulin A nephropathy, rarely amyloidosis, and fibrillary and immunotactoid glomerulopathy. In a retrospective analysis of kidney biopsy of 534 patients, we found 16 (2.9%) patients of hepatitis B and 11 (2.05%) patients of hepatitis C with glomerular disease. The most common form of glomerulonephritis in hepatitis B patient was MN and in hepatitis C patient was MPGN.


Assuntos
Glomerulonefrite Membranoproliferativa/epidemiologia , Glomerulonefrite Membranosa/epidemiologia , Hepatite B/epidemiologia , Hepatite C/epidemiologia , Adulto , Biomarcadores/sangue , Biópsia , Feminino , Glomerulonefrite Membranoproliferativa/diagnóstico , Glomerulonefrite Membranoproliferativa/virologia , Glomerulonefrite Membranosa/diagnóstico , Glomerulonefrite Membranosa/virologia , Hepatite B/diagnóstico , Hepatite B/genética , Hepatite B/virologia , Anticorpos Anti-Hepatite B/sangue , Antígenos de Superfície da Hepatite B/sangue , Antígenos E da Hepatite B/sangue , Hepatite C/diagnóstico , Hepatite C/genética , Hepatite C/virologia , Anticorpos Anti-Hepatite C/sangue , Humanos , Índia/epidemiologia , Masculino , RNA Viral/sangue , RNA Viral/genética , Estudos Retrospectivos , Carga Viral
6.
Oncotarget ; 8(13): 22299-22303, 2017 Mar 28.
Artigo em Inglês | MEDLINE | ID: mdl-28223549

RESUMO

BACKGROUND: Membranous nephropathy (MN) is the most common cause of nephrotic syndrome in adults. As many clinical cases have reported, it may be associated with hepatitis C virus (HCV) infection. Antiviral therapy can be various. CASE SUMMARY: We report a case of patient with chronic HCV infection and MN, who presented with was proteinuria. He was treated with ledipasvir and sofosbuvir (Harvoni; Gilead Sciences, Foster City, CA) and was found to be virus-free. CONCLUSION: We have reported this case to provide insight into whether Ledipasvir-Sofosbuvir should be administered for HCV-related glomerulonephritis.


Assuntos
Benzimidazóis/uso terapêutico , Fluorenos/uso terapêutico , Glomerulonefrite Membranosa/tratamento farmacológico , Hepacivirus/efeitos dos fármacos , Hepatite C Crônica/tratamento farmacológico , Prednisolona/uso terapêutico , Sofosbuvir/uso terapêutico , Idoso , Anti-Inflamatórios/uso terapêutico , Antivirais/uso terapêutico , Quimioterapia Combinada , Glomerulonefrite Membranosa/complicações , Glomerulonefrite Membranosa/virologia , Hepatite C Crônica/complicações , Hepatite C Crônica/virologia , Humanos , Masculino , Prognóstico
7.
PLoS One ; 11(9): e0160437, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27598699

RESUMO

Hepatitis B virus-associated membranous nephropathy (HBV-MN) is the most common renal extra-hepatic manifestation in patients with chronic HBV infection. In September 2015, we searched the MEDLINE, EMBASE, and CENTRAL databases, and the reference lists of retrieved articles, to identify relevant studies. Descriptions of antiviral drugs used to treat HBV-MN were included in our review. Two authors independently screened all relevant articles, extracted data, and assessed the risk of bias. Nine hundred and fifty-four papers have been considered after electronic and manual searching, only five relevant studies were identified. Complete remission (OR = 26.87, 95% CI: 8.06 to 89.52), total remission (OR = 10.31, 95% CI: 3.59 to 29.63) of proteinuria and HBeAg clearance (OR = 20.91, 95% CI: 6.90 to 63.39) increased significantly after antiviral therapy. No significant differences were seen between interferon and nucleoside analog treatments. Our study found that antiviral therapy was an effective treatment in HBV-MN patients; interferon and nucleoside analogs were equally effective at causing proteinuria remission and HBeAg clearance.


Assuntos
Antivirais/uso terapêutico , Glomerulonefrite Membranosa/tratamento farmacológico , Hepatite B/tratamento farmacológico , Interferons/uso terapêutico , Glomerulonefrite Membranosa/etiologia , Glomerulonefrite Membranosa/virologia , Hepatite B/complicações , Hepatite B/virologia , Antígenos E da Hepatite B/efeitos dos fármacos , Vírus da Hepatite B/efeitos dos fármacos , Vírus da Hepatite B/patogenicidade , Humanos , Nucleosídeos/uso terapêutico
8.
Eur J Intern Med ; 32: 96-104, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-27160380

RESUMO

BACKGROUND: The activation of complement system is associated with the development of hepatitis B virus-associated membranous nephropathy (HBV-MN) and heparin could inhibit the activation of complement system. METHODS: This was a three-center trial. Seventy-nine patients with HBV-MN participated in the study. The follow-up of the study consisted of two periods: Stage 1 (S1) and Stage 2 (S2). All patients received 0.5mg entecavir plus 150-300mg/day of irbesartan but sulodexide was prescribed during S1. They were randomized into 4 groups according to sulodexide dose: blank (Group 1), 250 lipasemic unit (lsu)/day for 1year (Group 2), 500 lsu/day for 1year (Group 3) and 1000 lsu/day for 6months followed by 250 lsu/day for 6months (Group 4). Major clinical outcomes were valid remission (VR): (1) urine albumin/creatinine ratio (UACR) <150mg/mmol and >50% decline of baseline; (2) albumin >35g/L; (3) glomerular filtration rate (GFR) >90ml/(min*1.73m(2)). RESULTS: (1) Groups 3 and 4 had significantly lower UACR and higher albumin than did Groups 1 and 2 at major visits; (2) Groups 3 and 4 achieved more VR compared with Group 1 (42.1% and 60.0% vs. 9.1%, p both<0.05); (3) in Groups 3 and 4, instead of Groups 1 and 2, more C3 deposition in the kidney was observed in those achieving VR; (4) plasma C3a, C5a and C5b-9 decreased significantly in Groups 3 and 4 during S1. CONCLUSIONS: (1) The prescription of both sulodexide and entecavir could improve the prognosis of patients with HBV-MN but their mechanisms might be different; (2) the renoprotection of sulodexide in HBV-MN might probably relate to the inhibition of complement system.


Assuntos
Anticoagulantes/uso terapêutico , Anti-Hipertensivos/uso terapêutico , Antivirais/uso terapêutico , Compostos de Bifenilo/uso terapêutico , Glomerulonefrite Membranosa/tratamento farmacológico , Glicosaminoglicanos/uso terapêutico , Guanina/análogos & derivados , Hepatite B/tratamento farmacológico , Tetrazóis/uso terapêutico , Adulto , Proteínas do Sistema Complemento/imunologia , Quimioterapia Combinada , Feminino , Glomerulonefrite Membranosa/etiologia , Glomerulonefrite Membranosa/imunologia , Glomerulonefrite Membranosa/virologia , Guanina/uso terapêutico , Hepatite B/complicações , Vírus da Hepatite B , Humanos , Irbesartana , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Resultado do Tratamento
9.
Clin Exp Pharmacol Physiol ; 43(4): 417-27, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-26825579

RESUMO

The purpose of this study is to elucidate the potential role of interleukin (IL)-10(+) regulatory B cells and other B cell subsets in the development of hepatitis B virus-associated membranous nephropathy (HBV-MN). A total of 14 patients with new onset HBV-MN, 12 individuals with immune-tolerant HBV infection (HBV-IT), and 12 healthy controls (HC) were examined for the percentages of CD38(+) , CD86(+) , CD27(+) , CD95(+) and IL-10(+) B cells by flow cytometry. Serum IL-10 concentration was examined by enzyme-linked immunosorbent assay (ELISA). The percentages of CD38(+) CD19(+) , CD86(+) CD19(+) , CD38(+) CD86(+) CD19(+) , and CD95(+) CD19(+) B cells were significantly higher in HBV-MN patients than the HBV-IT and HC. The percentages of CD5(+) CD19(+) , IL-10(+) CD19(+) B cells and serum IL-10 level in HBV-MN patients were significantly higher than the HC, and lower than the HBV-IT. Percentages of CD38(+) CD19(+) , and CD86(+) CD19(+) B cells were reduced after treatment, while the percentages of CD5(+) CD1d(+) CD19(+) , CD5(+) CD1d(+) IL-10(+) CD19(+) , and IL-10(+) CD19(+) B cells were increased. The 24 h urinary protein concentration was positively correlated with the percentage of CD38(+) CD19(+) , and negatively correlated with the percentage of IL-10(+) CD19(+) B cells and serum IL-10 level. Similarly, the value of eGFR was negatively correlated with the percentage of CD38(+) CD19(+) , and positively correlated with the percentage of IL-10(+) CD19(+) B cells and serum IL-10 level. Serum IL-10 level and the percentage of IL-10(+) CD19(+) were negatively correlated with the percentages of CD38(+) CD19(+) , and CD86(+) CD19(+) B cells. These results suggest that CD86(+) CD19(+) , CD38(+) CD86(+) CD19(+) , CD95(+) CD19(+) , and especially CD38(+) CD19(+) and IL-10(+) CD19(+) cells may participate in the pathogenesis of HBV-MN.


Assuntos
Linfócitos B Reguladores/citologia , Linfócitos B Reguladores/metabolismo , Glomerulonefrite Membranosa/imunologia , Glomerulonefrite Membranosa/virologia , Vírus da Hepatite B/fisiologia , Interleucina-10/biossíntese , Idoso , Antígenos CD19/metabolismo , Estudos de Casos e Controles , Feminino , Glomerulonefrite Membranosa/sangue , Glomerulonefrite Membranosa/tratamento farmacológico , Hepatite B/imunologia , Humanos , Interleucina-10/metabolismo , Masculino , Pessoa de Meia-Idade
10.
Acta Clin Belg ; 70(3): 223-5, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25510219

RESUMO

We have reported a case of occult hepatitis B virus infection (OBI) associated membranous nephropathy (MN) with complete remission under an ongoing 3.5-year entecavir monotherapy. A 59-year-old man with a 3-year history of liver cirrhosis was introduced to our department because of oliguria, proteinuria and microscopic haematuria. He, with negative serum HBV surface antigen, was not detected HBV DNA in his serum. Renal biopsy was performed and was compatible with a diagnosis of hepatitis B virus-related membranous nephropathy (HBV-MN). The patient was prescribed diuretics and intravenous albumin, and his ascites and oedema remitted gradually. At the same time, entecavir 0.5 mg per day was started. Entecavir treatment was continuing for 3.5 years and finally resulted in complete remission of proteinuria. This suggests that entecavir monotherapy may induce and maintain complete remission of MN associated with OBI.


Assuntos
Glomerulonefrite Membranosa , Guanina/análogos & derivados , Hepatite B Crônica , Antivirais/administração & dosagem , Glomerulonefrite Membranosa/diagnóstico , Glomerulonefrite Membranosa/tratamento farmacológico , Glomerulonefrite Membranosa/fisiopatologia , Glomerulonefrite Membranosa/virologia , Guanina/administração & dosagem , Antígenos de Superfície da Hepatite B/sangue , Vírus da Hepatite B/imunologia , Hepatite B Crônica/complicações , Hepatite B Crônica/diagnóstico , Hepatite B Crônica/tratamento farmacológico , Hepatite B Crônica/fisiopatologia , Humanos , Rim/patologia , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
12.
World J Gastroenterol ; 20(24): 7544-54, 2014 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-24976695

RESUMO

Hepatitis C virus (HCV) infection is a systemic disorder which is often associated with a number of extrahepatic manifestations including glomerulopathies. Patients with HCV infection were found to have a higher risk of end-stage renal disease. HCV positivity has also been linked to lower graft and patient survivals after kidney transplantation. Various histological types of renal diseases are reported in association with HCV infection including membranoproliferative glomerulonephritis (MPGN), membranous nephropathy, focal segmental glomerulosclerosis, fibrillary glomerulonephritis, immunotactoid glomerulopathy, IgA nephropathy, renal thrombotic microangiopathy, vasculitic renal involvement and interstitial nephritis. The most common type of HCV associated glomerulopathy is type I MPGN associated with type II mixed cryoglobulinemia. Clinically, typical renal manifestations in HCV-infected patients include proteinuria, microscopic hematuria, hypertension, acute nephritis and nephrotic syndrome. Three approaches may be suggested for the treatment of HCV-associated glomerulopathies and cryoglobulinemic renal disease: (1) antiviral therapy to prevent the further direct damage of HCV on kidneys and synthesis of immune-complexes; (2) B-cell depletion therapy to prevent formation of immune-complexes and cryoglobulins; and (3) nonspecific immunosuppressive therapy targeting inflammatory cells to prevent the synthesis of immune-complexes and to treat cryoglobulin associated vasculitis. In patients with moderate proteinuria and stable renal functions, anti-HCV therapy is advised to be started as pegylated interferon-α plus ribavirin. However in patients with nephrotic-range proteinuria and/or progressive kidney injury and other serious extra-renal manifestations, immunosuppressive therapy with cyclophosphamide, rituximab, steroid pulses and plasmapheresis should be administrated.


Assuntos
Hepacivirus/patogenicidade , Hepatite C/virologia , Nefropatias/virologia , Glomérulos Renais/virologia , Antivirais/uso terapêutico , Crioglobulinemia/virologia , Nefropatias Diabéticas , Glomerulonefrite por IGA/virologia , Glomerulonefrite Membranoproliferativa/virologia , Glomerulonefrite Membranosa/virologia , Glomerulosclerose Segmentar e Focal/virologia , Hepatite C/complicações , Hepatite C/diagnóstico , Hepatite C/tratamento farmacológico , Humanos , Imunossupressores/uso terapêutico , Nefropatias/diagnóstico , Nefropatias/fisiopatologia , Nefropatias/cirurgia , Glomérulos Renais/patologia , Glomérulos Renais/fisiopatologia , Glomérulos Renais/cirurgia , Transplante de Rim , Resultado do Tratamento
13.
J Nippon Med Sch ; 80(5): 387-95, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24189358

RESUMO

Membranous nephropathy (MN) is caused by subepithelial deposition of immune complexes in the glomerular basement membrane, with secondary MN arising in association with infection. In secondary MN caused by hepatitis B virus (HBV), seroconversion has been known to occur after the onset of MN, particularly in children. In patients with high serum concentrations of HBV DNA, treatment with interferon-α2b or a nucleoside analog has been reported to induce seroconversion and suppress HBV-DNA levels. We treated a 7-year-old boy who presented with proteinuria and liver dysfunction. He had a history of HBV infection since shortly after birth, as his mother was HBV-positive, and he was neither vaccinated nor treated with immunoglobulin at birth. Chronic hepatitis related to HBV was diagnosed following percutaneous needle biopsy of the liver. Percutaneous renal biopsy revealed HBV-related glomerulonephritis with diffuse global subepithelial and focal segmental mesangial and subendothelial deposits. Therefore, HBV-associated MN was diagnosed. Treatment with the nucleoside analog lamivudine was started to reduce serum HBV-DNA levels, but lamivudine was discontinued and treatment with entecavir was started at a dosage of 0.5 mg/day after 6 weeks because of possible adverse effects. Tests for HB envelope antibody were positive in week 16 of treatment, and proteinuria had resolved by week 22. Elevated levels of aspartate aminotransferase and alanine aminotransferase were seen with both treatments but were probably attributable to the developing immune response to HBV. In the present case, HBV levels needed to be reduced to: 1) lower elevated serum HBV-DNA titers, which put the patient at high risk of hepatocellular carcinoma; and 2) remove the immune complexes causing MN. Use of nucleoside analogs to suppress the HBV load may facilitate early remission of MN, and entecavir therapy did not cause any serious adverse reactions in this case. Given the advent of lamivudine-resistant HBV, entecavir appears promising for patients with elevated serum levels of HBV DNA.


Assuntos
Antivirais/uso terapêutico , Glomerulonefrite Membranosa/tratamento farmacológico , Guanina/análogos & derivados , Antígenos E da Hepatite B/sangue , Vírus da Hepatite B/efeitos dos fármacos , Hepatite B Crônica/tratamento farmacológico , Biomarcadores/sangue , Biópsia por Agulha , Criança , DNA Viral/sangue , Glomerulonefrite Membranosa/sangue , Glomerulonefrite Membranosa/diagnóstico , Glomerulonefrite Membranosa/virologia , Guanina/uso terapêutico , Vírus da Hepatite B/genética , Vírus da Hepatite B/imunologia , Hepatite B Crônica/sangue , Hepatite B Crônica/complicações , Hepatite B Crônica/diagnóstico , Hepatite B Crônica/virologia , Humanos , Rim/efeitos dos fármacos , Rim/patologia , Fígado/efeitos dos fármacos , Fígado/patologia , Masculino , Fatores de Tempo , Resultado do Tratamento , Carga Viral
14.
Transpl Infect Dis ; 15(6): E211-5, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24103101

RESUMO

Hepatitis E virus (HEV) has been identified as a cause of chronic viral hepatitis in immunocompromised patients. Some glomerular diseases were found to be associated with this infection. We report the first case, to our knowledge, of a kidney transplant recipient who developed an HEV infection and de novo membranous nephropathy (MN) concomitantly. The patient displayed a hepatic cytolysis first and a nephrotic syndrome occurred 3 months later. HEV infection was diagnosed upon positive polymerase chain reaction on plasma and stool samples, and renal allograft biopsy revealed de novo MN. Typical causes of MN were definitively excluded. A 3-month course of ribavirin monotherapy allowed the patient to mount a sustained viral response that was rapidly followed by complete remission of the nephrotic syndrome. The chronology of the onset and remission of both diseases is highly suggestive of a causal relationship between hepatitis E and MN.


Assuntos
Glomerulonefrite Membranosa/virologia , Hepatite E/complicações , Transplante de Rim , Hepatite E/tratamento farmacológico , Humanos , Masculino , Pessoa de Meia-Idade
15.
Int J Artif Organs ; 36(1): 63-8, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-23280083

RESUMO

BACKGROUND: Hepatitis C virus infection is associated with a variety of extrahepatic disorders such as membrano-proliferative glomerulonephritis, which is generally due to cryoglobulinemia. 
 SETTING: We describe the case of one liver transplant recipient who received antiviral therapy (subcutaneous administration of peg-IFN-alpha-2a 180 mcg weekly and oral ribavirin 200 mg thrice a day) for HCV-related membrano-proliferative glomerulonephritis. He presented normal kidney function, non-nephrotic proteinuria (2 g/24 h) and mild hematuria.
 RESULTS: Urinary abnormalities disappeared within a few weeks after the initiation of antiviral therapy; however, combination antiviral therapy was not able to obtain viral clearance. After 11 months, IFN-therapy was interrupted and the patient continued low-dose ribavirin monotherapy (200 mg once per day) for one additional year- remission of proteinuria (<0.3 g/24 h) and hematuria persisted with intact kidney function. Although other mechanisms cannot be excluded, we suggest that ribavirin therapy was critically implicated in the remission of urinary abnormalities in our patient. The existing literature on the association between HCV-associated glomerulonephritis and therapy with ribavirin is reviewed. 
 CONCLUSIONS: Antiviral therapy may be effective in patients with HCV-induced glomerulonephritis. Further evidence is needed to evaluate efficacy and safety of ribavirin monotherapy for HCV-related glomerulonephritis.


Assuntos
Antivirais/uso terapêutico , Carcinoma Hepatocelular/cirurgia , Glomerulonefrite Membranosa/tratamento farmacológico , Hepatite C Crônica/tratamento farmacológico , Interferon-alfa/uso terapêutico , Neoplasias Hepáticas/cirurgia , Transplante de Fígado , Polietilenoglicóis/uso terapêutico , Ribavirina/uso terapêutico , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/virologia , Esquema de Medicação , Quimioterapia Combinada , Glomerulonefrite Membranosa/diagnóstico , Glomerulonefrite Membranosa/virologia , Hepatite C Crônica/complicações , Hepatite C Crônica/diagnóstico , Hepatite C Crônica/virologia , Humanos , Imunossupressores/uso terapêutico , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/virologia , Masculino , Pessoa de Meia-Idade , Proteínas Recombinantes/uso terapêutico , Indução de Remissão , Resultado do Tratamento
16.
BMC Nephrol ; 13: 149, 2012 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-23151312

RESUMO

BACKGROUND: Sjögren's syndrome is a systemic autoimmune disease in which lymphatic cells destroy the salivary and lacrimal glands. Glomerulonephritis is thought to be a rare occurrence in primary Sjögren's syndrome. Furthermore, concurrent glomerular involvement and lymphoma in patients with Sjögren's syndrome has seldom been reported. CASE PRESENTATION: A 52-year-old woman with primary Sjögren's syndrome developed membranous glomerulonephritis and Epstein-Barr virus-positive diffuse large B-cell lymphoma (DLBCL). She was diagnosed with Sjögren's syndrome based on the dry eyes, dry mouth, positive anti-nuclear antibody test, anti-Ro (SS-A) antibody, salivary gland biopsy, and salivary scintigraphy. Moreover, renal biopsy confirmed the diagnosis of membranous glomerulonephritis. Three months later, her small bowel was perforated with pneumoperitoneum, and the biopsy revealed Epstein-Barr virus-positive DLBCL. CONCLUSIONS: We observed the first case of primary Sjögren's syndrome associated with Epstein-Barr Virus-positive DLBCL and membranous glomerulonephritis. Because of the possibility of malignancy-associated membranous glomerulonephritis in patients with primary Sjögren's syndrome, we should be careful and examine such patients for hidden malignancy.


Assuntos
Glomerulonefrite Membranosa/diagnóstico , Herpesvirus Humano 4 , Linfoma Difuso de Grandes Células B/diagnóstico , Síndrome de Sjogren/diagnóstico , Feminino , Glomerulonefrite Membranosa/complicações , Glomerulonefrite Membranosa/virologia , Herpesvirus Humano 4/isolamento & purificação , Humanos , Linfoma Difuso de Grandes Células B/complicações , Linfoma Difuso de Grandes Células B/virologia , Pessoa de Meia-Idade , Síndrome de Sjogren/complicações , Síndrome de Sjogren/virologia
17.
Zhonghua Nei Ke Za Zhi ; 50(9): 766-70, 2011 Sep.
Artigo em Chinês | MEDLINE | ID: mdl-22176966

RESUMO

OBJECTIVE: To observe the expression of nephrin in hepatitis B virus-associated membranous nephropathy (HBV-MN), and investigate the impairment and significance of podocyte in HBV-MN. METHODS: The protein expression of nephrin in renal biopsy specimens in 35 patients, who were diagnosed as HBV-MN by renal biopsy, was determined by immunohistochemistry and tested by semi-quantitative method. The relationship between the expression of nephrin and clinicopathological data was analyzed. RESULTS: Among the 35 cases with HBV-MN, 6 were in MN phase I, 20 in MN phase II and 9 in MN phase III. A strong intensity expression of nephrin in normal glomerulus was found along capillary loop of glomerulus, while its expression in HBV-MN patients decreased obviously. There was no significantly difference in the expression of nephrin among the different stages of HBV-MN (P > 0.05). The expression of nephrin in different clinical types was significantly different(P < 0.05). The expression of nephrin in patients with nephrotic syndrome was significantly lower than that in patients without nephrotic syndrome (P < 0.01). The expression of nephrin in different grades of 24-hour urinary protein excretion quantity was significantly different(P < 0.05). There was negative correlation between the expression of nephrin and 24-hour urinary protein excretion quantity(r = -0.378, P < 0.05). In the patients with HBV-MN phase II, the expression of nephrin in patients with nephrotic syndrome was also significantly lower than that in patients without nephrotic syndrome (P < 0.01). CONCLUSIONS: The damage of podocytes emerge in the early stage of HBV-MN and the expression of nephrin in HBV-MN patients, especially in patients with nephrotic syndrome, are significantly down regulated. The descended expression of nephrin in HBV-MN patients may promote the production of proteinuria.


Assuntos
Glomerulonefrite Membranosa/metabolismo , Glomerulonefrite Membranosa/patologia , Proteínas de Membrana/metabolismo , Adolescente , Adulto , Criança , Feminino , Glomerulonefrite Membranosa/virologia , Vírus da Hepatite B , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
18.
Pediatrics ; 128(3): e600-4, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21859911

RESUMO

OBJECTIVE: To compare the incidence of hepatitis B virus (HBV)-associated membranous nephropathy (HBVMN) before and after universal HBV vaccination and to identify factors underlying the change. METHODS: This study included 471 hospitalized children with nephrotic syndrome (NS) and 488 long-term follow-up hepatitis B surface antigen (HBsAg)-carrier children. Horizontal transmission (negative maternal HBsAg status) of HBVMN and HBV was assessed, and the incidence of HBVMN was compared before and after initiation of the universal HBV vaccination program started in 1984. RESULTS: The frequency of HBVMN in children with NS was 11.6% between 1974 and 1984, 4.5% between 1984 and 1994, 2.1% between 1994 and 2004, and 0% between 2004 and 2009. Similarly, the number of HBsAg-seropositive children with NS (mainly via horizontal infection) decreased after universal vaccination. The prevaccination frequency of HBV horizontal transmission in chronic HBsAg carriers from the general population was 36.5% compared with 5% in the postvaccination period. The incidence of HBVMN in these carriers revealed a parallel decline. CONCLUSIONS: Our results revealed a significant decrease in the frequency of HBVMN in children with NS and in long-term follow-up HBsAg carriers. Children with HBVMN are primarily infected with HBV via horizontal transmission; thus, the significant reduction in horizontal transmission in HBsAg-carrier children in the general population after universal HBV vaccination may explain the reduction of HBVMN in the vaccinated population. These findings confirm the effectiveness of HBV vaccination on reducing the incidence of HBVMN, possibly through a significant decline in horizontal HBV infection.


Assuntos
Transmissão de Doença Infecciosa/prevenção & controle , Glomerulonefrite Membranosa/epidemiologia , Glomerulonefrite Membranosa/virologia , Vacinas contra Hepatite B/uso terapêutico , Hepatite B/complicações , Hepatite B/prevenção & controle , Criança , Feminino , Glomerulonefrite Membranosa/prevenção & controle , Humanos , Masculino , Síndrome Nefrótica , Estudos Retrospectivos
19.
Nephron Clin Pract ; 119(1): c41-9; discussion c49, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21677438

RESUMO

Epidemiological studies have shown a relationship between hepatitis B virus (HBV) infection and development of proteinuria in some patients (most commonly children), with a predominance for male gender and histological findings of membranous nephropathy on renal biopsy. The presence of immune complexes in the kidney suggests an immune complex basis for the disease, but a direct relation between HBV and membranous nephropathy (or other types of glomerular diseases) remains to be proven. Clearance of HBV antigens, either spontaneous or following antiviral treatments results in improvement in proteinuria. Thus, prompt recognition and specific antiviral treatment are critical in managing patients with HBV and renal involvement. The present review focuses on treatment of HBV with special emphasis given to antiviral therapies, its complications, and dosing in patients with HBV-associated kidney disease.


Assuntos
Antivirais/uso terapêutico , Glomerulonefrite Membranosa/terapia , Glomerulonefrite Membranosa/virologia , Vírus da Hepatite B , Hepatite B/terapia , Animais , Glomerulonefrite Membranosa/etiologia , Hepatite B/complicações , Vírus da Hepatite B/efeitos dos fármacos , Vírus da Hepatite B/crescimento & desenvolvimento , Humanos , Proteinúria/complicações , Proteinúria/terapia , Proteinúria/virologia , Resultado do Tratamento
20.
Ann Hepatol ; 10(2): 165-73, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21502678

RESUMO

OBJECTIVES: To assess the efficacy of anti-viral therapy on hepatitis B virus associated glomerulonephritis (HBV-GN). DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We searched PubMed, Embase and Cochrane Library for prospective controlled trials which assessed the efficacy of anti-viral therapy on HBV-GN in adult or pediatric patients between January, 1970 and October, 2010. Results were summarized using fixed-effects model because of an absence of heterogeneity among the studies (I(2) = 0%). RESULTS: Six trials with a total of 159 patients were included; among them five trials were specified as hepatitis B virus-associated membranous glomerulonephritis (HBV-MN). In adult patients, the incidence of proteinuria remission, not only total remission (complete remission CR + partial remission PR) (2.97 to 109.93, P = 0.002) but also CR (1.18 to 16.11, P = 0.03), significantly increased in the anti-viral treatment. In pediatric patients, only the incidence of total remission (1.77 to 17.75, P = 0.003) was increased significantly; the incidence of CR was not pooled with clinical and statistical heterogeneity (I(2) = 81.5%, P = 0.004).Combine the data from adult and pediatric patients with HBV-MN, the same results were found. All the results of proteinuria remission kept with virologic response (VR), including HBeAg conversion (5.68 to 40.04, P < 0.00001) and reduction of HBV-DNA (5.60 to 463.16, P = 0.0005). CONCLUSIONS: Antiviral therapy including IFN and lamivudine is effective on remission of proteinuria, HBeAg clearance, and HBV-DNA reduction.


Assuntos
Antivirais/uso terapêutico , Glomerulonefrite Membranosa/tratamento farmacológico , Glomerulonefrite Membranosa/virologia , Hepatite B Crônica/complicações , Hepatite B Crônica/tratamento farmacológico , Humanos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...