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  • 1
    Electronic Resource
    Electronic Resource
    Copenhagen : Munksgaard International Publishers
    Journal of oral pathology & medicine 29 (2000), S. 0 
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Hepatitis C virus (HCV) infection not only causes chronic liver diseases but shows extrahepatic manifestations as oral lichen planus (OLP) and oral cancer. To elucidate the direct relationships among these diseases and HCV infection, we investigated the detection of positive- and negative-strand HCV-RNA from serum, OLP (n=19), and oral cancer (n=17) tissues. We used a sensitive reverse transcription to polymerase chain reaction (RT-PCR) method, and analyzed sequences from the HCV E1/E2 region of the genome from serum and tissue. Positive and negative HCV-RNA strands were observed in 13 (92.9%) and 3 (21.4%) OLP tissues, respectively. In oral cancer tissues, positive HCV-RNA strands were detected in all tissues from anti-HCV positive patients. Negative HCV-RNA strands were observed in 5 of 7 (71.4%) patient’s tissues. Furthermore, it was confirmed that the sequence from one of each OLP and oral cancer patient differed between serum and tissue HCV-RNA. These results may indicate that HCV persists and replicates in these lesions, suggesting a pathological role for HCV, although the mechanisms are unclear.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 26 (1997), S. 0 
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We studied the incidence of GBV-C infection in patients with oral cancer or oral lichen planus (OLP). Subjects included 38 patients with oral cancer and 34 patients with OLP from whom serum was collected to detect GBV-C-RNA using reverse transcription (RT) “nested” PCR. GBV-C-RNA was positive in 1 (2.6%) oral cancer patient and 3 (8.8%) OLP patients. All 4 GBV-C-positive patients were also positive both for the antibody for hepatitis C virus (anti-HCV) and HCV-RNA, indicating simultaneous infection with GBV-C and HCV. In conclusion. GBV-C infection was found in 5.5% (4/72) of oral cancer or OLP patients and all patients infected with GBV-C also had HCV infection. This suggests that GBV-C infection is unlikely to play an important role in the pathogenesis of oral cancer and OLP.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 24 (1995), S. 0 
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We have investigated the correlation between the prevalence of hepatitis C virus (HCV), which is detectable in saliva, and oral cancer and other digestive tract cancers in the Northern Kyushu region of Japan. Anti-HCV antibodies were detected in sera from 24 of the 100 patients with oral cancer (24%, p〈0.05 vs the control group, p〈0.01 vs the stomach cancer group), in 11 of 104 patients with non-malignant diseases receiving dental treatment (the control group, 10.6%), and in 12 of 113 patients with stomach cancer (10.6%). HCV-RNA was detected in sera from 17 of 100 oral cancer patients (17%, p〈0.05 vs the control group) and 4 of 104 patients of the control group (3.9%). These results indicate a high prevalence of HCV infection in oral cancer patients, which warrants a systematic study of etiological associations between oral cancer and HCV.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1437-773X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1435-5922
    Keywords: lichen planus ; hepatitis C virus (HCV) ; HCV RNA ; Glycyrrhizin (GL)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Oral lichen planus (OLP), an intractable inflammatory disease characterized by a band-like lymphocytic invasion under the oral mucosa, is frequently associated with hepatitis C virus (HCV) infection. We investigated the effects of glycyrrhizin, which is used to treat chronic liver dysfunction, in nine patients with OLP who were positive for HCV antibody and HCV RNA. A control group, eight patients with OLP who were also positive for HCV antibody and HCV RNA, was given only dental cleaning. Glycyrrhizin (GL) was given intravenously, at a dose of 40ml (0.2% solution) daily, for 4 consecutive weeks. Six (66.7%) of the nine patients given GL improved clinically (P=0.0141 vs non-GL group), suggesting that GL is useful in treating OLP.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1435-5922
    Keywords: hepatitis A virus (HAV) ; antibody to hepatitis A virus (anti-HAV) ; immune adherence hemagglutination (IAHA)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Changes in the serum hepatitis A virus anti-body (anti-HAV) response in patients with different clinical courses of HAV infection were examined using immune adherence hemagglutination (IAHA). Anti-HAV was detected 2–6 weeks after the onset of clinical symptoms in patients with the typical course of acute hepatitis A and 1–4 weeks after the onset in those with fulminant hepatitis A. Maximal anti-HAV titers were observed 8–20 weeks after the onset of clinical symptoms, and changes in anti-HAV were similar in the typical and the prolonged course of acute hepatitis A, but maximal antibody titers were higher in the prolonged course. Maximal anti-HAV titers in patients with subclinical HAV infection were significantly lower than titers in patients with the typical and prolonged courses of acute hepatitis A, and in those with fulminant hepatitis A. High titers of anti-HAV remained positive for at least 6 years after infection in patients with clinical infection and for at least 4 years in patients with subclinical infection on follow-up. These findings suggest that the maximum anti-HAV titer correlates with the clinical severity of HAV infection; knowledge of the antibody response should be useful for analyzing the pathogenesis of HAV infection.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1435-5922
    Keywords: amyloidosis ; asialoglycoproteins ; radionuclide imaging ; hyaluronic acid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 47-year-old man with primary amyloidosis was admitted with abdominal pain. A new radionuclide liver imaging technique using Technetium-99 m diethylenetriamine-pentaacetic acid-galactosyl human serum albumin, was performed and the serum hyaluronate concentration was measured. Although ordinary laboratory tests revealed only slight abnormalities, the uptake of the radiolabelled ligand for hepatocyte asialo-glycoprotein receptors was dereased, and marked hepatomegaly was revealed. Furthermore, the serum hyaluronate level was elevated. Histological examination of a hepatic needle biopsy specimen revealed a marked deposition of amyloid in the hepatic perisinusoidal spaces. These results indicate, that this new radionuclide liver imaging technique (using Technetium-99 m diethylenetriamine-pentaacetic acid-galactosyl human serum albumin) and the measurement of serum hyaluronate may be useful supplementary tools for identifying amyloid deposition in the hepatic perisinusoidal spaces in patients with amyloidosis.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1435-5922
    Keywords: Key words: hepatitis C virus (HCV) ; HCV hyper-endemic area ; HCV RNA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract: We conducted an epidemiological study of 509 residents of H town, Fukuoka, Japan, to investigate the high mortality rate from liver disease. Antibodies to hepatitis C virus (HCV) (anti-HCV) were detected in 120 residents (23.6%); HCV RNA in 91 (17.9%), and hepatitis B surface antigen (HBsAg) in 13 (2.6%). Multivariate logistic regression analyses showed that presence of anti-HCV, male gender, and history of liver disease were associated with the presence of liver dysfunction, and that age of more than 40 years and a particular district were associated with the presence of anti-HCV. HCV RNA was more frequently detected in anti-HCV-positive men than women (41, or 85.4% versus 50, or 69.4%) (P 〈 0.05). The incidence of liver dysfunction was significantly higher in HCV RNA-positive men than women (32, or 66.7% versus 22, or 30.6%) (P 〈 0.05). These findings suggest that: (1) HCV was correlated with the high mortality rate from liver diseases, (2) there were district-related differences in the incidence of HCV, and (3) the lower frequency of elimination of HCV from men may explain why they showed a high mortality from liver disease.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1435-5922
    Keywords: Key words: cirrhosis ; echo-Doppler flowmetry ; postprandial hemodynamics ; posture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract: The aim of this study was to compare postprandial hemodynamic changes observed during assumption of the recumbent posture and upright posture in patients with cirrhosis and portal hypertension. Eleven patients with cirrhosis and portal hypertension were studied. Echo-Doppler examinations were performed to measure flow volume in the portal vein (PV), superior mesenteric artery (SMA), and splenic artery (SA) in the fasting condition. Collateral blood flow was indirectly calculated by determining the difference between the sum of SMA, SA, and PV blood flows. After these measurements were done, each patient received a standardized liquid meal and was then randomly assigned to either maintain supine or upright posture, in a crossover design, on 2 different days (recumbent day and upright day). On each study day, the above-mentioned measurements were repeated 30 min and 60 min after the meal. PV blood flow increased significantly after the meal on the recumbent day (P 〈 0.01) but not on the upright day (P = 0.78). Although there were significant postprandial increases in SMA blood flow on both study days (P 〈 0.01, P 〈 0.01), the effect was less pronounced on the upright day than on the recumbent day (P 〈 0.01). Postprandial SA blood flow showed no change on the recumbent day (P = 0.64), but decreased significantly on the upright day (P 〈 0.01). The calculated postprandial collateral blood flow increased significantly on the recumbent day (P 〈 0.05), but showed no change on the upright day (P = 0.53). These results suggest that the upright posture blunts postprandial splanchnic hyperemia in patients with cirrhosis and portal hypertension.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1435-5922
    Keywords: Key words: erythropoietic protoporphyria ; liver failure ; treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract: A 33-year-old woman with a history of photosensitivity, persistent abdominal pain, and liver dysfunction was admitted to our department because of abdominal pain and progression of liver dysfunction. On admission, levels of protoporphyrin and coproporphyrin within erythrocytes were markedly increased. Autofluorescent erythrocytes were also detected, leading to a diagnosis of erythropoietic protoporphyria. A liver biopsy specimen revealed cirrhosis with dark brown granules filling hepatocytes, bile canaliculi, and bile ductules. Transfusion of washed erythrocytes, hemodialysis, and administration of cholestyramine and beta-carotene transiently improved levels of porphyrins and liver function. The patient died of rupture of esophageal varices followed by multiple organ failure. However, the treatments were believed to have extended survival.
    Type of Medium: Electronic Resource
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