Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0019163 (hepatitis B)
 38,309 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Lymphoma is a common hematological malignancy. Hepatitis viruses, especially hepatitis B and hepatitis C, are known risk factors for development of non-Hodgkin lymphomas. However, there are a number of patients with hepatitis in whom no virus can be identified and it was therefore postulated that there may be other agents which may be causing hepatitis. Many new hepatitis viruses have indeed been identified and proposed to have possible roles in pathogenesis of many disorders. Hepatitis G virus (HGV) is an example of a newly detected hepatitis virus. Whethere there is a correlation between infection and development of non-Hodgkin's lymphoma is of interest. Therefore an appraisal of the prevalence of HGV RNA among patients with B cell non-Hodgkin's lymphoma comparing with healthy control subjects was performed. According to the literature review, three reports covering 247 cases of non Hodgkin's lymphoma were recruited. The overall prevalence of HGV RNA positivity was found to be 7.2 % (18/247). Of the three reports, only two had complete data on the prevalence in both patients with B cell non-Hodgkin's lymphoma and healthy control subjects andwere used for further metanalysis study, covering 178 cases and 355 healthy subjects. The overall antibody positive rate in the patients and healthy subjects were 8.4 % (15/178) and 0.8 % (3/355), respectively, with an odds ratio is 10.8. According to this study, it can be seen that individuals who are HGV RNA positive may be at very high risk of B cell non-Hodgkin's lymphoma development.
Asian Pac J Cancer Prev
PMID:Individuals with HGV-RNA are at high risk of B cell non-Hodgkin's lymphoma development. 1610 37

Liver cancer is one of the leading causes of cancer deaths in Asia and Africa. The epidemiology of liver cancer is distinctive in Japan, where chronic infection with hepatitis C virus (HCV) rather than hepatitis B virus (HBV) plays the major role in the etiology. In this paper, together with a brief review of the descriptive epidemiology of liver cancer and its prevention, Japanese experiences of liver cancer occurrence and some epidemiological studies are described, and Japanese national projects directed against hepatitis and liver cancer are presented. Distinctive time-trends have been observed for liver cancer incidence in Japan. The rates for over 55-59 year olds (both sexes) showed a peak in the birth cohort of 1931-1935, while the rates for less than 50-54 year old females indicate a decreasing trend. The extremely high incidences among birth cohorts around 1931-1935 seems to be related to endemic HCV infection in this generation in Japan. Follow-up studies not only of patients with chronic hepatitis C but also of apparently healthy carriers of HCV showed an increased risk of hepatocellular carcinoma (HCC). Cumulative risk of HCC (40-74 years of age) was estimated as reaching 21.6% (males) and 8.7% (females) among anti-HCV positive voluntary blood donors. Retrospective cohort studies indicated interferon (IFN), with or without ribavirin, to be effective for reducing the risk of HCC among patients with chronic hepatitis C. Periodic examination with ultrasonography and measurement of alpha-fetoprotein has become common practice for early detection of HCCs among patients with chronic hepatitis or liver cirrhosis in Japan. A non-randomized controlled study was conducted to evaluate the effect of periodic examination on mortality, but we failed to show any beneficial effects of screening for liver cancer. In the fiscal year 2002, Japanese National Projects directed against hepatitis and HCC were started, in which blood tests for HCV and HBsAg are offered just once at the age of 40, 45, 50, 55, 60, 65 or 70 for five years. Participants are categorized as either HCV carriers or non-carriers. HCV carriers are further examined by liver disease specialists, seeking indications for IFN therapy. Type C chronic hepatitis patients are recommended to receive IFN therapy with or without ribavirin. This project is expected to become a model of liver cancer control in HCV-endemic countries. Recently however, the US Preventive Service Task Force has recommended against routine screening for HCV infection in asymptomatic adults in the general population who are not at increased risk of infection. This divergence of views is also discussed.
Asian Pac J Cancer Prev
PMID:Liver cancer and its prevention. 1623 81

Although chronic infection with hepatitis B virus (HBV) is one of the major risk factors for liver cancer, the level of knowledge about liver cancer risk factors and HBV transmission, as well as vaccination have not been assessed in this population. We interviewed Hmong youth living in Fresno, California about liver cancer risk factors. General knowledge of HBV was common, but knowledge of specific modes of transmission was low. For example, only 49% knew that HBV was transmitted by sexual intercourse. We also observed very low prevalence of HBV vaccination (12%), although a majority reported knowing that shots can prevent disease (68%). Liver cancer prevention and control methods targeted to Hmong youth are needed.
Asian Pac J Cancer Prev
PMID:Hepatitis B knowledge and vaccination levels in California Hmong youth: implications for liver cancer prevention strategies. 1623 7

Hepatocellular cancer (HCC) is a common gastrointestinal malignancy in hepatitis cases which is difficult to detect in early stages. Alpha fetoprotein (AFP) is a tumor marker which has been introduced for screening but in Southeast Asia where the rate of hepatitis B seropositivity is very high, the diagnostic benefit is still doubtful. Here, a literature review of three Thai reports was conducted, covering 4,295 cases. The overall diagnostic activity showed sensitivity, specificity, false positives and false negatives of 73.5%, 98.9%, 26.5% and 1.1%, respectively. Thus the sensitivity is insufficient for screening purposes and serum AFP can not be recommended for hepatitis B carriers over standard tests.
Asian Pac J Cancer Prev
PMID:Alpha fetoprotein for screening for hepatocellular cancer in populations with viral hepatitis B: an appraisal of Thai reports. 1643 7

Court Decision: 18 Pacific Reporter, 3d Series 1177; 2001 Mar 8 (date of decision). The Supreme Court of Wyoming held that the state Department of Health was not authorized to inquire about the sincerity of a mother's religious beliefs when determining whether her daughter was exempt from a public school immunization requirement. Susan LePage submitted a request to the Department of Health seeking to exempt her daughter from receiving the hepatitis B vaccination. The Department of Health inquired into the sincerity of LePage's religious beliefs against vaccination and determined that her objections were of a personal or philosophical nature and not on religious grounds. The Department of Health denied LePage's request. The Supreme Court of Wyoming held that state law requires the Department of Health to grant an exemption upon the submission of a written objection and does not allow the Department of Health to make an inquiry into the sincerity of the requestor's religious beliefs. The court balanced a valid state interest in protecting schoolchildren from disease with the relatively low number of requests for exemption and its confidence in parents to make decisions in the best interest of their children's physical and spiritual health. Since there was no justification within the statute to allow a religious inquiry, the court held that the Department of Health had exceeded its authority with LePage. Furthermore, state law did not require a religious waiver to exempt a child from this particular vaccine. The lower court's holding was reversed.
Wests Pac Report 2001
PMID:In re LePage. 1647 6

Liver cancer is one of the leading causes of cancer death in Mongolia. Since 1982-1986 , when HCC became the most frequent cancer among the Mongolian population, the rate has been increasing continuously. In the period 2000-2005 years 35.3%of all newly registered cancer cases were liver cancers, with an incidence rate of 51.3 per 100,000 population. Compared to the previous 5 year period, the rate increased by 11%. The objective here was to analyze hepatitis B (HBV) and C virus (HCV)-related HCC cases and to evaluate the possibility of tumor marker (AFP) testing for early detection in Mongolia. Sera from a total of 513 patients with chronic liver diseases, liver cirrhosis and HCC were analyzed for liver function (ALAT, ASAT) and hepatitis virus markers (HBsAg, anti-HCV). Sera from 316 patients were also examined for alpha-fetoprotein (AFP) levels. The overall incidence of HBsAg or anti-HCV were very high ( 95.3%) among all patients. Some 33.5% (66/197) of patients with HCC were positive for HBsAg and 45.2% (89/197) for anti-HCV. Moreover, 17.3% ( 34/197) of HCC patients demonstrated co-infection with HBV and HCV. AFP levels were elevated in 4.6% (11/238) and 29.5% (23/78) of chronic hepatitis and cirrhosis patients, respectively. In HCC cases, 84.3% (166) of patients had increased level of AFP ranging from 32 ng/ml to more than 400 ng/ml. We conclude that HBV/HCV infection is the main factor related to development of HCC in Mongolia and that testing for AFP serum levels is a useful tool for early detection and diagnosis.
Asian Pac J Cancer Prev
PMID:Hepatocellular carcinoma and its early detection by AFP testing in Mongolia. 1705 45

Delayed type hypersensitivity (DTH) skin test is a standard tool to assess in vivo cell-mediated immunity. Mantoux method using 4-5 common recalled antigens is recommended. However, not all antigens are widely available and appropriate antigens for tropical countries are not known. The objective of this study is to investigate what and how many antigens should be included in the DTH testing panel that suitable for Thailand and may be for this region. The DTH skin tests were done by Mantoux method in a double blinded fashion. Average induration size of > or = 5 mm defined as a positive test. Antigens included purified protein derivative (PPD), Candida albicans, tetanus toxoid (TT), Trichophyton mentagrophytes and hepatitis B vaccine (HBV). The negative control was normal saline. Of 95 healthy subjects, all showed DTH positive to > or = 1 antigen. The positivity to C. albicans, tetanus toxoid, PPD, T. mentagrophytes, and HBV was 92.6%, 83.2%, 82.1%, 50.5%, and 5.3%, respectively. When three antigens: PPD, TT and C. albicans were analyzed, 100% of subjects showed a positive response to > or = 1 antigen and 96.8% showed a positive response to > or = 2 antigens. When only PPD and TT were analyzed, 100% of subjects showed > or = 1 antigen positive and 68.4% showed both antigens positive. C. albicans antigen at 1:100 was associated with a high incidence of fever (2/20) and large local reaction (7/20), 1:500 was found to be the optimal concentration. PPD, TT and C. albicans are suitable to be included in a DTH skin testing in a tropical country like Thailand. However, in a setting where C. albicans extract is not available, testing with only two antigens of PPD and tetanus toxoid may be an alternative, but with a lower sensitivity.
Asian Pac J Allergy Immunol
PMID:Three suitable antigens for delayed-type hypersensitivity skin testing in a tropical country like Thailand. 1713 80

This paper describes the recruitment and participation of Pacific people in a large hepatitis B screening programme undertaken in Auckland, New Zealand between April 2000 and December 2002. Thirty three percent (32,700) of the adult Pacific population was screened, with coverage highest among the Tongan community (50%) largely though the efforts of two active ethnic specific Pacific and non-Pacific providers using combinations of language-targeted promotion, outreach visits and opportunistic recruitment at general practice visits. Important differences were found in recruitment methods and patterns between Pacific populations and for different age groups. These findings suggest that funders, planners and providers of health programmes need to respond to the diversity within Pacific communities, and understand the importance of ethnic-specific providers when mobilising large numbers of people for population health interventions.
Pac Health Dialog 2006 Sep
PMID:Mobilising Pacific people for health: insights from a hepatitis B screening programme in Auckland, New Zealand. 1818 85

Hepatitis B is a global serious disease caused by hepatitis B virus (HBV). There is no known cure for hepatitis B. The best way to deal with the disease is by preventing with hepatitis B vaccine. However, the current protein-based vaccines made up of recombinant hepatitis B surface antigen (HBsAg) are ineffective in chronic HBV carriers and a significant number of the vaccinees do not mount the protective immune response. Novel DNA-based immunization may overcome the deficits of the protein-based immunization and may provide more effective prophylactic and therapeutic outcomes. In this study, we constructed a recombinant plasmid carrying gene encoding the HBV surface antigen (HBs) linked to DNA segment encoding full-length murine interleukin-18, i.e. pcDNA-HBs-IL-18. Immunogenicity of the DNA construct was carried out in BALB/c mice in comparison with mock, i.e. pcDNA3.1+ and vaccines comprised of pRc/CMV-HBs and pRc/CMV-HBs plus pcDNA-IL-18. All vaccinated mice revealed significant serum anti-HBs IgG response after two intramuscular injections of the vaccines at 28 day interval as compared to the level of mock. Co-administration of pRc/CMV-HBs and pcDNA-IL-18 elicited arbitrarily higher levels of anti-HBs IgG than the levels in mice immunized with pRc/CMV-HBs alone and mice that received pcDNA-HBs-IL-18 although not statistically different. Further experiments are needed to investigate the subisotypes of the IgG antibody, the kinetics of cytokine and the cell-mediated immune response. For this communication, the prototype HBs-IL-18 DNA vaccine was successfully constructed and the gene encoding murine IL-18 was successfully cloned. The latter can be co-injected with the antigen coding DNA or used as a fusion partner to the DNA for priming the immune response. The recombinant HBs and full-length IL-18 proteins have potential for other research purposes. They may be used also as standard proteins in the protein quantification assay.
Asian Pac J Allergy Immunol 2007 Dec
PMID:Cloning, protein expression and immunogenicity of HBs-murine IL-18 fusion DNA vaccine. 1840 97

Recent studies suggest that cyclooxygenese-2 (COX-2) enzyme activation may play a role in hepatocarcinogenesis. However, the clinical significance of COX-2 expression in hepatocellular carcinoma (HCC) remains obscure. This study evaluated COX-2 expression in hepatitis B and hepatitis C virus related HCC and in HCC patients with an unknown etiology. Liver tissue samples of 31 patients with HCC (27 men and 4 women; age range, 48-75 years) were analyzed. COX-2 expression was evaluated by immunohistochemically in the tumor tissues. Patient data including age, sex, Child score, stage, grade of the tumor and survival were analyzed. Of these patients 19 were positive for hepatitis B virus (HBV), 6 were positive for hepatitis C virus (HCV) and 6 patients were negative for all viral markers and other etiologic factors. COX-2 staining were evaluated in 2 groups (group 1: COX-2 expression less than 25% (grades 1-2 COX-2 expression), and group 2: Cox-2 expression 25% or more (grades 3-5 COX-2 expression). COX-2 expression was shown in all HCC samples with positive or negative viral markers. No difference was found between degree of COX-2 expression and the etiology of HCC. COX-2 expression was not correlated with number of lesion or stage of the disease or grade of the tumor. COX-2 expression was not related with Child score of the patients. Median survival of all patients was 32 months. Median survival of patients did not differ according to patient's viral marker status. No difference was observed in median survival of patients in group 1 and 2. As a result, COX-2 system seem to be shared part in hepatocarcinogenesis regardless factors that initiate the disease. Although COX-2 expression appears to be independent of disease's characteristics', treatments that target this system appear to be feasible in the management of HCC.
Asian Pac J Cancer Prev
PMID:Lack of influence of cyclooxygenese-2 expression in hepatocellular carcinomas on patient survival. 1871 78


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>