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Biomedical subjects

E R Schiff

Publications and source records attributed to E R Schiff.

At least 19 recordsLinked to original sources
PubMed1992

Prevalence of antibodies to hepatitis C virus among patients with cryptogenic chronic hepatitis and cirrhosis.

Many cases of chronic hepatitis and cirrhosis cannot be attributed to a known cause and are collectively referred to as cryptogenic chronic liver disease. We have evaluated the role of the hepatitis C virus in the pathogenesis of this condition in a retrospective serum analysis for antibody to hepatitis C virus in 129 patients with cryptogenic liver disease. Other causes of chronic hepatitis and cirrhosis were ruled out by clinical, serum biochemical and serological techniques. All 129 patients were HBcAg negative, but 28 (22%) had antibody to HBcAg. Sera were tested by radioimmunoassays using recombinant peptides for antibodies to nonstructural (C100-3 and C33c) and structural regions (C22) of HCV. Among the 129 patients, 61 (47%) had antibody to C100-3, 76 (59%) had antibody to C33c and 74 (57%) had antibody to C22. Seventy-nine (61%) were reactive with at least one and 76 (59%) were reactive with at least two HCV peptides (this is the criterion used for hepatitis C virus antibody reactivity). A proportion of patients with chronic hepatitis and cirrhosis (55 of 91; 60%) similar to that of patients without cirrhosis (21 of 38; 55%) had hepatitis C virus antibody. No significant clinical, serum biochemical or histological differences were noted between the group of patients with hepatitis C virus antibody and those without this antibody reactivity. Thus more than half the patients with cryptogenic chronic liver disease had hepatitis C virus antibody, suggesting that chronic HCV infection plays a major role in the origin of cryptogenic chronic hepatitis and cirrhosis.

Adult↗
PubMed1992

Atypical clinical manifestations of hepatitis A.

Viral A hepatitis is a self-limited infection occurring predominantly among children usually as an anicteric often subclinical illness. Adults afflicted with this virus are more likely to develop icteric hepatitis. This is exemplified in developed countries when a common source outbreak occurs among non-immune adults. Fulminant hepatitis is uncommon in the USA and hepatitis A has never been documented to evolve into chronic hepatitis. However, prolonged cholestasis and relapsing hepatitis are well described. The usual features of cholestatic viral hepatitis A are pruritus, fever, diarrhoea, and weight loss. Serum bilirubin levels are > 10 mg/dl and the clinical course lasts at least 12 weeks. Cholestasis will spontaneously resolve, although corticosteroids will hasten the resolution but may predispose the patient to develop a relapse of the hepatitis. A biphasic or relapsing form of viral hepatitis A occurs in 6 to 10% of cases. The initial episode lasts 3 to 5 weeks and is followed by a period of remission characterized by normal liver chemistries lasting 4 to 5 weeks. Relapse may mimic the initial episode of the acute hepatitis. The full duration of the illness ranges from 16 to 40 weeks from the onset and immunoglobulin M antibody to hepatitis A virus persists throughout the clinical course. Hepatitis A virus has been recovered from stools during the relapse. Extrahepatic manifestations of hepatitis A include evanescent skin rash and transient arthralgias. Documented cases of arthritis and cutaneous vasculitis have been associated with cryoglobulinaemia and are rare.

Adult↗
PubMed1992

Ancient remedies revisited: does Allium sativum (garlic) palliate the hepatopulmonary syndrome?

Hypoxia in the setting of liver disease is often multifactorial. Obstructive or restrictive lung disease, pleural effusions, and tense ascites are common underlying disorders. Less often observed and frequently unrecognized is hypoxia related to diffuse intrapulmonary shunting--the hepatopulmonary syndrome. Its etiology is unknown but may result from disordered gut peptide metabolism. Symptoms may be ameliorated by somatostatin and reversed by successful liver transplantation. Here we report a patient with severe hepatopulmonary syndrome who failed somatostatin therapy and declined liver transplantation. On her own the patient took large daily doses of powdered garlic (Allium sativum). She has experienced partial palliation of her symptoms and some objective signs of improvement over 18 months of continuous self-medication. The possible effects of garlic's main physiologically active compound, allicin, on gut peptide metabolism and pulmonary vasculature are unknown. This innocuous compound may deserve further investigation given the limited therapeutic options for this disorder.

Arteriovenous Fistula↗
PubMed1991

Immunophenotyping of lymphocytes in liver tissue of patients with chronic liver diseases by flow cytometry.

Immunological factors are important in the pathogenesis of a spectrum of hepatobiliary diseases. To characterize the nature of specific immunological responses in liver disease, we determined lymphocyte changes in liver tissue and in blood using flow cytometry. A total of 113 liver biopsy specimens was collected from patients with the following diseases: 19 chronic hepatitis B; 39 chronic non-A, non-B hepatitis; 27 alcoholic liver disease; 10 hepatic malignancy; 8 autoimmune hepatitis; 6 fatty liver and 4 primary biliary cirrhosis. The lymphocytes were isolated from the liver biopsy specimens by mechanical and enzymatic methods. The lymphocyte yield was 7,901 +/- 575 cells/mg of liver tissue. The viability of lymphocytes was 97.7% +/- 0.3%. Lymphocytes were stained with four pairs of two-color mixed fluorescein-conjugated monoclonal antibodies, including T4-T8 (CD4/CD8), T11-B1 (CD2-CD20), NKH1-T8 (CD56-CD8), IL-2R1-T11 (CD25-CD2), and the ratios were determined by an Epics Profile flow cytometer. Immunophenotyping of lymphocytes in whole blood samples was simultaneously analyzed. Variability in lymphocyte yield and different patterns of lymphocyte subsets were found in the liver biopsy specimens. The yields of lymphocytes from patients with chronic non-A, non-B and autoimmune hepatitis were highest, and the lowest yield was from patients with fatty liver. Patients with primary biliary cirrhosis, fatty liver and hepatic malignancy had relatively high ratios of CD4/CD8, CD56/CD8 and CD25/CD2; whereas patients with chronic hepatitis B, autoimmune hepatitis and non-A, non-B hepatitis had lower ratios of CD4/CD8, CD56/CD8 and CD25/CD2. No difference in lymphocyte ratios between the patients with cirrhotic and noncirrhotic alcoholic liver disease was found.(ABSTRACT TRUNCATED AT 250 WORDS)

Cell Separation↗
PubMed1991

Antibody to hepatitis C is common among patients with alcoholic liver disease with and without risk factors.

Thirty-seven patients with clinically suspected alcoholic liver disease were retrospectively studied for the prevalence of antibody to hepatitis C virus (HCV) by enzyme-linked immunosorbent assay (ELISA) and immunoblot assay. Twenty-four had biopsy-proven cirrhosis. Nineteen had identifiable risk factors for non-A, non-B viral hepatitis, and 18 did not. Five of 19 high-risk (26%) and 6 of 18 low-risk (33%) patients had positive antibody, compared with two of 179 healthy blood donors (p less than 0.01 for either group of alcoholics compared with blood donors). Nine of 11 ELISA-positive patients were also either positive or indeterminable by immunoblot testing. Histologic scores for parameters commonly associated with chronic viral hepatitis were numerically worse among anti-HCV-positive patients, but none reached statistical significance. Clinically, seven of 11 (64%) of anti-HCV-positive patients versus 14 of 26 (54%) anti-HCV-negative patients were Child's class C. Among the 21 Child's class C patients, seven (33%) were anti-HCV-positive versus four of 16 (25%) of Child's class A/B patients. A weak correlation between IgG and ELISA optical density was observed (r = 0.52). We conclude that antibody to hepatitis C by ELISA and immunoblot is common among alcoholics with liver disease even in the absence of known or suspected risk factors for viral hepatitis. Although hepatitis C-positive patients tended to have more severe histologic disease, neither histologic parameters nor clinical findings were adequate to predict antibody seropositivity.

Adult↗
PubMed1991

Detection of hepatitis C virus sequences in liver tissue by the polymerase chain reaction.

Although sensitive assays for serum antibodies to hepatitis C virus (HCV/anti-HCV) have been developed recently, the relation of anti-HCV to HCV infection of the liver has not been clarified. Therefore, we determined the presence of HCV RNA by the reverse transcription-polymerase chain reaction (PCR) in liver biopsy specimens of 21 patients with chronic liver disease and 5 control patients. RNA was extracted from frozen liver tissues by the guanidinium method, HCV cDNA was synthesized by reverse transcription, and core region and NS3 region sequences were amplified by PCR. The sensitivity and specificity of the reaction was significantly enhanced by double PCR with nested primers followed by Southern blotting with an HCV specific oligomer probe. NS3 region sequences were detected in the liver specimens of 12 out of 15 anti-HCV positive patients. Core region sequences were detected in 9 patients, all of whom were also positive for NS3 region sequences. HCV sequences were not detected in 11 anti-HCV negative patients. In all cases, the integrity of the extracted RNA was demonstrated by successful amplification of albumin mRNA as internal control. Our findings demonstrate the feasibility of the reverse transcription-double PCR method followed by Southern blotting for the detection of HCV sequences in liver tissues. In this system, the detection rate of NS3 region sequences is higher than that of core region sequences. There is a statistically significant correlation between high titer anti-HCV antibodies in serum and NS3 region sequences in liver tissue. However, not all anti-HCV positive patients had HCV positive hepatitis. The reverse transcription-polymerase chain reaction for HCV sequences on liver tissue extracts may reveal valuable information on the diagnosis of HCV infection and the pathogenesis of chronic hepatitis C.

Base Sequence↗
PubMed1991

Human T-cell lymphotropic virus infection among blood donors in south Florida. The Transfusion Safety Study Group.

Knowledge of the epidemiologic pattern of human T-lymphotropic virus (HTLV) in the United States is being enlarged by blood donor screening. We tested stored sera from 29,937 donations made in South Florida in 1984-1985. Twenty-three donors were confirmed as seropositive, a prevalence of 0.8 per 1,000 donations. Specificity was supported by serologic retesting and virus culture of 11 donors located for follow-up. Sex- and age-specific prevalences did not differ significantly; blacks, however, accounted for 65% of seropositive donations. Within South Florida, one section of Miami had a prevalence of 4.5 per 1,000 donations, significantly above the 0.1 to 1.1 per 1,000 rates for other parts. An epidemiologic association with known HTLV-I endemic areas could account for most infections; all seven typed isolates were characterized as HTLV-I. Exposures, however, were diverse, sometimes multiple, and had no necessary relationship to personal lifestyle. This finding suggests that sources of infection were varied. Seropositive family members emphasize familial clustering of HTLV-I infection.

Adult↗
PubMed1979

Jaundice.

Explore the source record for details and available documents.

Diagnosis, Differential↗
PubMed1979

Progressive enlargement of an hepatic cell adenoma.

Over a 5-mo period, an hepatic cell adenoma was noted to increase considerably in size, despite discontinuation of oral contraceptives. Progressive tumor enlargement was documented by hepatic angiography, computed tomographic scan (CT scan) of the liver and 99mTc liver scan. The repeat hepatic angiogram also revealed that the tumor had become more vascular. Multiple adenomas were in fact seen by all three techniques mentioned above. At surgery, seven hepatic cell adenomas were demonstrated, of which four were resected.

Adenoma↗