Principais motivos de descarte de córneas para transplante na Paraíba: por que o anti-HBc merece atenção?* / Main reasons for discarding corneas for transplant in Paraíba: why does anti-HBc deserve attention?*

RESUMO Objetivo: Identificar o perfil dos doadores de tecidos oculares humanos na área de atuação do Banco de Olhos da Paraíba, destacando o impacto da sorologia positiva para hepatite B no descarte dos tecidos para transplante. Métodos: O estudo é transversal e utilizou dados do Banco de Olhos da Paraíba entre janeiro de 2013 e dezembro de 2022. Dados sobre procedência, idade, sexo, causa do óbito, tempo entre óbito e enucleação, resultados sorológicos e motivo de descarte das córneas dos doadores foram coletados. Resultados: O maior motivo de descarte foi por sorologia positiva (56,5%), sendo positivadas as sorologias positivas para hepatite B e HBsAg em 11,1% e 4,75% dos pacientes, respectivamente. Conclusão: A sorologia positiva para hepatite B como um critério de descarte absoluto é responsável por grande parcela de descartes, apesar da pouca informação sobre suas repercussões e representação de infectividade nos receptores do transplante.

ABSTRACT Objective: To identify the profile of human ocular tissue donors in the area covered by the Eye Bank of Paraíba (PB), highlighting the impact of positive serology for hepatitis B (anti-HBc) in the disposal of tissues for transplantation. Methods: This is a cross-sectional that uses data from the Eye Bank of Paraíba (PB) between January 2013 and December 2022. Data on origin, age, sex, cause of death, time between death and enucleation, serological results, and reason for discarded donor corneas were collected. Results: The main reason for discarding was due to positive serology (56.5%), with positive anti-HBc and HBsAg serology in 11.1% and 4.75% of patients, respectively. Conclusion: Anti-HBc positive serology as an absolute disposal criterion is responsible for great part of disposals, despite little information about its repercussions and representation of infectivity in transplant recipients.

Hepatitis B core antigen expression pattern predicts response to lamivudine therapy in patients with chronic hepatitis B / 대한간학회지

BACKGROUNDS/AIMS: Negative hepatitis B core antigen (HBcAg) staining in hepatocytes is indicative of viral replication by an active immune response. HBcAg is expressed mainly in the cytoplasm in patients with active hepatitis and hepatocyte regeneration, and mainly in the nuclei of hepatocytes in patients with minimal liver injury in the absence of hepatocyte regeneration. The aim of this study was to elucidate whether the existence and expression pattern of HBcAg predicts the response to antiviral treatment. METHODS: The study involved 58 patients with biopsy-proven chronic hepatitis B who were treated with lamivudine. Hepatitis B e antigen (HBeAg), antibody to HBeAg, hepatitis B virus DNA, and alanine aminotransferase in serum were recorded every 3 months. The inflammation grade and the fibrosis stage of chronic hepatitis were scored from 0 to 4 according to lobular inflammation, portal inflammation, periportal inflammation, and fibrosis. RESULTS: The 58 patients included 49(84%) HBcAg-positive patients, with HBcAg staining confined to the cytoplasm in 15(31%) and in both cytoplasm and nuclei in 34(69%). The grade of lobular inflammation and the total histology score were significantly higher in patients with cytoplasmic expression of HBcAg than in HBcAg-negative patients (lobular inflammation: 2.9 vs 2.1, P=0.02; total histology score: 12.2 vs 10.3, P=0.04). The virologic responses at 3, 6, 9, and 12 months differed significantly between the cytoplasmic and mixed expression groups (P<0.01). CONCLUSIONS: The expression pattern of HBcAg (including its possible absence) before initial therapy appears to predict the response to antiviral treatment.

Correlative analysis of histological profile of the adjoining liver parenchyma with liver enzyme levels in hepatocellular carcinoma and their comparison with chronic liver disease in autopsy cases.

The exact mechanism and aetiological factor for hepatocarcinogenesis is not yet well defined. Besides genomic integration of hepatitis B viral particles, persistent chronic inflammation is postulated to be important initiating factor in viral related hepatocellular carcinoma (HCC). The objectives of the present study were--to correlate histological profiles of chronic liver disease in the adjoining non-tumor liver tissue in HCC with liver enzymes, to compare with those of non-carcinomatous chronic liver disease cases using the liver tissue and data collected at autopsy, and to correlate with hepatitis B and C positive status. Post mortem liver and data available at autopsy were used for the study. Changes of chronic liver disease was graded and staged according to Peter Scheur's (1991). In HCC, the non-malignant liver tissue was used for the study. Hepatitis B surface and core antibodies were demonstration by immunohistochemistry. HCV was documented by RT-PCR using the tissue extract of paraffin embedded liver tissue. HCC group had higher inflammatory grading and transaminases levels than non-HCC group. HBcAg alone and dual HBcAg and HCV positive cases were more in HCC group. Incidence of biliary epithelial cell injury was higher in HCV positive subgroup. Conclusion: higher incidence of inflammatory grading and enzyme level in alone HBcAg and dual HBcAg and HCV positivity in HCC group would suggest significant role of ongoing persistent chronic inflammation and actively replicating HBV and HCV infections in carcinogenesis.

Comparative analysis of HBV and HCV infection in hepatocellular carcinoma and chronic liver disease--an autopsy based study.

Hepatocellular carcinoma (HCC) is one of the common malignancies worldwide including Asian countries. Chronic viral hepatitis is implicated as an important etiological factor in carcinogenesis of liver. AIM: To study incidence of hepatitis B (HBV) and C (HCV) viruses in HCC and to compare the incidences with that of chronic liver disease. MATERIALS AND METHOD: 40 cases each of HCC (group I) and chronic liver disease including cirrhotic liver (group II) who died of the liver disease. All cases were stained with HBsAg and HBcAb for HBV and RT-PCR for HCV RNA. Different groups were compared using student's t-paired and chi-square tests. RESULTS: Group I--HCC was seen in 37 cirrhotics and 3 non-cirrhotic cases. HBsAg was positive in 32 cases (80%), HBcAb in 22 cases (55%) and HCV in 23 cases (57.5%) (p<0.05). Dysplastic nodule (DN) was seen in 25 cases, HBsAg and HBcAg positivity were seen in 18 and 15 cases respectively. Group II--32 cases were cirrhotic and 8 were non-cirrhotics. HBsAg was positive in 28 (70%), HBcAb in 12 (30%) and HCV in 18 (45%) cases. DN was seen 24 cases, HBsAg and HBcAg postiviy were seen in 16 and 7 cases respectively. HBV and HCV co-infection was seen in 20 and 15 cases, and HCV with HBcAb positivity was seen in 13 and 9 cases in groups I and II respectively. Number of cells in each case showing positivity for HBcAb was also significantly higher in group I (p<0.01). Age and sex distribution did not show any distinctive differences between the two groups. CONCLUSION: the study highlights a high incidence ofHBVand HCV infection in cases of chronic liver disease and HCC. HBcAb positive state appears to be an independent risk factor for HCC.

Relevancy between Liver Injury, Serum HBV-DNA, and Intrahepatic HBcAg in Young Male Chronic HBV Carriers / 대한소화기학회지

BACKGROUND/AIMS: Although the viral load is correlated with HBcAg, liver injury was not correlated to viral load in HBeAg positive patient. We aimed to study the inter-relationship of clinical parameters such as the level of HBV-DNA, the level of aminotransferase, intrahepatic expression of HBcAg and severity of histological liver damage in the young male chronic HBV carriers according to HBeAg status. METHODS: The study group included 85 young male patients (mean age: 19.8) with biopsy-proven chronic hepatitis B (HBeAg-positive group: n=60, HBeAg-negative group: n=25). RESUTLS: Serum levels of HBV-DNA and the expression of intrahepatic HBcAg in the HBeAg-positive group were significantly higher than in the HBeAg-negative (p<0.001), but fibrosis score was lower (p<0.01). Serum levels of HBV-DNA positively correlated with lobular activity, portal/periportal activity, biochemical activities in the HBeAg-negative group but negatively correlated in the HBeAg-positive group. There were no significant differences in histological activity according to the pattern of expression of intrahepatic HBcAg in both groups. The lobular activity correlated positively with biochemical activity in both groups, and portal/periportal activity correlated with biochemical activity only in the HBeAg-positive group. CONCLUSIONS: There are close correlations among liver injury, intrahepatic expression of HBcAg, and detectable HBV-DNA in the young male chronic HBV carriers with HBeAg-negativity, but in the HBeAg-positive group, the correlations are diversified.

Hepatites pós-transfusionais na cidade de Campinas, SP, Brasil. II. Presença dos anticorpos anti-HBc e anti-HCV em candidatos a doadores de sangue e ocorrência de hepatites pós-transfusionais pelo vírus C nos receptores de sangue ou derivados / Post-transfusional hepatitis in the city of Campinas, SP, Brazil. II. Presence of anti-HBc and anti-HCV antibodies in blood donor candidates and occurrence of post-transfusional hepatitis C in recipients of blood or derivates

We have analysed anti-HBc and anti-HCV antibodies in serum samples from 799 donors which had their blood or derivates transfused to 111 recipients. Anti-HBc and anti-HCV were reactive in respectively 9 and 2.1 of the donors tested. We have observed that among the 111 recipients, 44 had received at least one positive anti-HBc unit and 67 had been transfused only with negative anti-HBc, units. The risk of developing hepatitis C virus was 4.5 times higher for the recipients who received at least one positive anti-HBc unit. If the test for anti-HBc had been made for the blood donors in the serological screening, about 56 of the HCV cases in the recipients could have been avoided. The population of recipients who received at least one reacting unit of anti-HCV, presented a risk 29 times higher of developing this hepatitis, as compared to the transfused recipients with all anti-HCV negative units. Testing blood from donors for anti-HCV would avoid 79 of the post-transfusional HCV cases. Brazilian candidates to blood donors seem to be carriers either simultaneously or sequentially to hepatitis virus B and C, since 44.4 of the positive anti-HCV were also positive for anti-HBc. Testing for anti-HBc and anti-HCV in blood screening must be indicated in order to prevent post-transfusional hepatitis transmission in our community.

Prevalencias do HBsAg, do anti-HBc e do anti-HCV na população de candidatos a doadores de sangue do Hemocentro-Campinas / Prevalence of HBsAg, anti-HBc and anti-HCV in blood donor candidates at the Campinas hemocenter

Among 29833 donors evaluated we have found a prevalence of 1.52 for HBsAg and 11 for anti-HBc. The co-positivity anti-HBc/anti-HBs in 2783 donors HBsAg negative/anti-HBc positive was 81.9. The prevalence for HBsAg is low among Campinas donors, while anti-HBc presents high prevalence when compared to that of other countries. The anti-HCV detection in blood donors of Campinas has shown a positivity of 2.6 which is much higher than that of USA and Europe. About 36 of the anti-HCV positive donors are anti-HBc reagent, leading to the conclusion that these two "viruses" infect simultaneous or sequentially Brazilian blood donors.

Prevalência do anticorpo contra hepatite C (anti VHC) em doadores de sangue no Rio de Janeiro, Brasil: sua relaçäo com ALT e anti HBc / Prevalence of antibodies to hepatitis C (anti HCV) in blood donors in Rio de Janeiro, Brazil: its relation with ALT and anti HBC

Estudamos no período de maio a julho de 1990, 933 doadores de sangue atendidos no Serviço de Hemoterapia. Após entrevista e exames rotineiros, foram realizados testes de triagem: antiHBc total, antiVHC e transminase glutâmico pirúvica (ALT). Os marcadores virais foram determinados por técnica de enzimaimunoensaio. 94% dos doadores eram do sexo masculino com média de idade de 33 anos (19-65). A positividad para o antiVHC foi de 3,1%. Entre os doadores antiVHC+, 13,29(44,8%) apresentaram ALT>40UI/L, 9/29(31%) foram positivos para o antiHBc e 5(17,2%) tinham ambos os marcadores. De 109 doadores com ALT > UI/L 13(11.9%) foram anti VHC+. Enquanto de 153 doadores anti HBC+, a positividade para o anti VHC foi de 5,8%, pouco maior que a do grupo total. Conclusöes: 1) Nossos doadores apresentam elevada prevalência de anti VHC(método de ELISA) quando comparada à de outros países estudados; 2) a determinaçäo de ALT e a pesquisa de anti HBc no soro de doadores foi incapaz de detectar 41,4% de doadores anti VHC+; 3) houve maior prevalência de ALT elevada nos doadores antiVHC+ com relaçäo amostra/cutoff > 4

Serological pattern of hepatitis B virus markers (HBsAg, anti-HBs, IgM anti-HBc and HBV specific DNA polymerase) in leprosy patients.

Sera of 134 lepromatous (LL/BL) and 57 tuberculoid (TT/BT) leprosy patients were analysed for four HBV markers. HBsAg was detected in 6.71% of lepromatous and 3.5% of tuberculoid sera. The per cent positivity of lepromatous and tuberculoid sera for anti-HBs antibodies was 30.59% and 35.08%, respectively. The positivity of normal sera for HBsAg and anti-HBs was 3.60% and 21.69%, respectively. The difference in the positivity of three groups of sera (lepromatous, tuberculoid and normal) for HBsAg or anti-HBs was not statistically significant. Anti-HBc (IgM) antibodies were detected in 6% of lepromatous sera. HBV-specific DNA-polymerase activity was found in 22.22% of HBsAg positive (but anti-HBc negative) sera, and 66.66% of anti-HBc positive (but HBsAg negative) sera. The pattern of acute HBV infection in leprosy patients followed the typical pattern prevalent in the normal population.

Prevalencia de infección por virus B en odontologos del Distrito I de la Provincia de Buenos Aires

Se analizaron dos muestras, la primera de 250 odontólogos extaidos de un universo compuesto por 1500 dentistas del Distrito 1 de la Provincia de Buenos Aires y otra de 31 estudiantes, tomados de los 180 que cursaron el último año de la carrera de Odontología dela U.N.L.P. En la muestra de odontólogos se halló, mediante la determinación de anti HBc por enzimo-inmuno-ensayo (E.L.I.S.A.), una prevalencia de infeccion por HBV de 9.6%. Esta prevalencia es significativamente superior a la de la población general (5.8%), con lo cual se demuestra por primera vez en nuestro medio, que estos profesionales constituyen también población de alto riesgo. La prevalencia hallada en los estudiantes (6.4%) no fue significativamente diferente a la de la población general. La prevalencia de anti HBc hallada en cada uno de los servicios considerados, se correlacionó en forma directamente proporcional con el número de pacientes asistidos diariamente. Se constató que las medidas de prevención y esterilización para el HBV eran inadecuadas. No se comprobó ninguna asociación entre determinado patrón de HLA y los distintos perfiles serológicos

Marcadores sorológicos da hepaite viral B e alfa 1 antitripsina em indios da tribo Mekranhotire / Serological markers for hepatitis B and alpha 1-antitrypsin in Indians of the Mekranhotire tribe

Os autores estudaram marcadores sorológicos do vírus B da hepatite e alfa1 antitripsina em 80 índios da tribo Mekranhotire, grupo Jê, localizados no sul do Pará, à cabeceira do rio Iriri. Foi encontrada positividade de 8,75% para o AgHBs, 91,2% para o anti-HBc, 11,5% para o anti-HBs e 0,0% para AgHHe entre os 80 índios estudados. O grupo controle mostrou positividade em 1% para o AgHBs. 15% para o anti-HBc, 24,7% para o anti-HBs e 0% para AgHBe. Verificaram diferenças significantes quanto aos marcadores AgHBs e anti-HBc. Näo encontraram diferenças significativas quanto ao anti-HBs e AgHBe. As taxas de alfa1 antitripsina foram menores na populaçäo indígena, quando comparadas às do grupo controle

Marcadores sorológicos do virus da hepatite B e anticorpo delta em homossexuais masculinos brasileiros / Serological markers for hepatitis B virus and delta antibody in Brazilian male homosexuals

Os marcadores sorológicos do vírus B da hepatite B foram estudados em um grupo de homens homossexuais em Säo Paulo, Brasil. Encontraram-se 23% de positividade para o AgHBs nos 26 homossexuais, sendo que 81% apresentavam positividade para alguns dos marcadores do vírus B. Anticorpo anti-o näo foi detectado em nenhum caso. No grupo controle, encontrou-se 1% de positividade para o AgHBs entre 500 homens estudados

Prevalence of anti-HBc in Malaysian male blood donors and its correlation with DNA polymerase activity.

A study of Kuala Lumpur blood donors for HBsAG, anti-HBc and DNA polymeraes showed that 5.5% in the sample population was positive for HBsAG, 50.1% for anti-HBc and 10.1% for DNA polymerase activity. There was no significant difference of the HBsAG among the Malay, Chinese and Indian groups. However, a significant difference was observed for the anti-HBc and DNA polymerase activity between the Indian and the Malay/Chinese groups. Both analysis were significantly lower in the Indians but there was no significant difference between the Chinese and the Malays.