Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0039730 (thalassemia)
 10,305 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Serum hepatitis B e antigen (HBeAg) and HBV DNA are indicators of active replication of HBV, whereas IgM antibody to hepatitis B core antigen (IgM anti-HBc) may indicate an active immune response to chronic HBV infection. Fifty-eight carriers of hepatitis B surface antigen (HBsAg) who had frequent parenteral exposures were studied for the presence of HBeAg, HBV DNA, IgM anti-HBc and hepatitis delta virus (HDV) serologic markers. Active replication of HBV was detected in 36.2% (25% of drug addicts, 16.7% of thalassemia patients, and 46.9% of hemodialysis patients) and seropositivity for IgM anti-HBc in 55.2% of the HBsAg carriers. Among the 39 HBsAg carriers who were negative for HBeAg, IgM anti-HBc was detected significantly more frequently than HBV DNA (46.1% vs. 5.1%, p less than 0.001). Serologic evidence of HDV infection was detected in 35% of drug addicts, 50% of thalassemia patients and in 9.4% of hemodialysis patients. These data revealed that continued replication of HBV was more frequent in hemodialysis patients than in drug addicts and thalassemia patients who are HBsAg carriers and the opposite was true for the prevalence of HDV infection.
 ...
PMID:Serologic markers of hepatitis B virus (HBV) and hepatitis D virus infection in carriers of hepatitis B surface antigen who are frequently exposed to HBV. 375 6

Monoclonal antibodies (OKT series) have been used to investigate possible modifications of T lymphocytes and T lymphocyte subsets in 65 multiply transfused beta-thalassemia patients. No significant difference was observed in percentage and absolute number of OKT3-, OKT4-, and OKT8-positive cells when compared to controls. A subgroup of patients (10 patients, 15.3%), however, could be selected who showed a reversal of OKT4/OKT8 ratio. These patients did not differ from the others as to age, number of transfusions, frequency of splenectomy, ferritin levels, hepatitis B markers, chronic liver disease incidence, and numbers of B lymphocytes and natural killer cells. The features distinguishing this group from the remaining patients were: decreased mitogen responsiveness; early age when first transfused; high incidence of males (90%). Immunological investigation was done in 2 occasions, 1 year apart, but no significant modification was observed in these patients. These findings suggest that in beta-thalassemia patients transfusion therapy started very early in life may be responsible for persistent immunological modifications. The susceptibility to such modifications might be greater in males.
 ...
PMID:Altered T cell subsets and function in polytransfused beta-thalassemia patients: correlation with sex and age at first transfusion. 387 36

Superoxide anion production in resting and PMA- or zymosan-stimulated neutrophils was evaluated in 21 beta-thalassemia patients. The results were correlated with ferritin values, hepatitis B virus serum markers, liver pathology, immunoglobulin levels and T-cell subsets. Superoxide anion generation from resting or PMA-stimulated neutrophils was significantly higher in patients than in controls. On the contrary, zymosan-stimulated neutrophils showed reduced superoxide anion production. Increased superoxide anion production in resting neutrophils showed a significant correlation to the values of ferritin. In addition, patients with biopsy-proven chronic liver disease showed significantly increased ferritin levels and superoxide anion production as compared to the remaining patients. No correlation was observed between superoxide anion production and the presence or the absence of hepatitis B virus serum markers, immunoglobulin levels and T-cell subsets. A possible role of interreactions between iron and oxygen radicals in determining liver damage in beta-thalassemia patients is suggested.
 ...
PMID:Changes in superoxide anion production in neutrophils from multitransfused beta-thalassemia patients: correlation with ferritin levels and liver damage. 633 Oct 44

IgE values obtained in 117 beta-thalassaemia patients were significantly higher than in age matched normal subjects. In 31 patients (26.5%) IgE levels were above 2 s.d. of normal values for age, but the frequency of IgE with reaginic activity was lower in patients (5.1%) than in controls (11.9%). The highest values were observed in splenectomized patients who were also positive for one or more serological markers of hepatitis B virus infection. The increase of IgE levels was directly correlated with the number of years after splenectomy, and patients with biopsy proven chronic liver disease had higher IgE levels than those without evidence of liver damage. On the other hand, IgE levels were not correlated with the number of transfusions, age, IgG, IgA, IgM levels or T cell subsets and mitogen responsiveness. These results show that beta-thalassaemia patients develop elevated IgE levels to which splenectomy and hepatitis B virus infection contribute in a synergistic manner.
 ...
PMID:Raised IgE levels in beta-thalassaemia: correlation with splenectomy and hepatitis B virus infection. 633 94

Incidence, clinical course and outcome of viral hepatitis was evaluated during a 42 mo. study in 118 Thalassaemia minor patients, compared with a paired group of 123 nonthalassaemic subjects, matched for age, sex and number of drug addicts. In the thalassaemics, which account for 13% of residents in our area, acute hepatitis showed to have an incidence of 1.3-1.7 higher than the control group. The acute course was milder and more protracted and the number of evolution into chronicity was more elevated: 19.7% vs. 11.3%, following hepatitis B, and 40.6% vs. 23.7% following NANB hepatitis. However data were statistically significant only as regard as differences between ALT (p less than or equal to 0.05, B-H; p less than or equal to 0.01, NANB-H) and IgM in the group of B hepatitis only (p less than or equal to 0.05) Differences between elongation of course were also significant in both types of hepatitis (p less than or equal to 0.01). Pathogenetic aspects such as depressed cellular immunity and hepatic disorders due to thalassaemia, which may explain the higher incidence of hepatitis and the tendency of evolution into chronicity, are discussed.
 ...
PMID:[Hepatitis in thalassemia minor: incidence and evolution]. 644 58

The inactivated hepatitis B vaccine that was licensed in November 1981 will be distributed for general use later this year. Extensive studies have confirmed the safety, immunogenicity, and remarkable efficacy of this vaccine for the prevention of acute hepatitis B disease, asymptomatic infection, and the chronic hepatitis B carrier state. The vaccine is recommended for immunization of infants, children, and adults who are considered to be at increased risk of contracting hepatitis B infection. These population groups include medical, dental, laboratory, and other health care personnel, selected patients (eg, hemodialysis, thalassemia), clients and staff of institutions for the mentally disabled, homosexually active males, intimate contacts of carriers, users of illicit drugs, infants in high-risk areas, and other high-risk groups. The availability and appropriate use of the newly licensed hepatitis B vaccine should enable physicians to prevent a serious cause of acute and chronic liver disease.
 ...
PMID:The newly licensed hepatitis B vaccine. Characteristics and indications for use. 703 74

The systematic screening of 253 children with transfusion-dependent homozygous beta-thalassaemia revealed a high incidence of hepatitis B virus markers. The highest frequencies of hepatitis B surface antigen (HBsAg) and antibody to hepatitis B core antigen (anti-HBc) were found in the group of patients with the smallest number of transfusions, while the highest frequency of antibody to hepatitis B surface antigen (anti-HBs) was detected in the patients who had had the largest number of transfusions. Follow-up of these patients showed (a) a high incidence of acute hepatitis B, which was mainly subclinical; (b) normal hepatitis B surface antigen clearance and normal antibody to hepatitis B surface development; and (c) a high frequency of increased transaminase values for over six months. In all the subjects with persistently high transaminase, histological examination revealed chronic persistent hepatitis or chronic active hepatitis. Apart from two cases of chronic active hepatitis with no B virus markers, and two cases of chronic persistent hepatitis with HBsAg and anti-HBc in the serum, all these subjects were anti-HBs positive but HGsAg and anti-HBc negative.
 ...
PMID:Chronic liver disease in transfusion-dependent thalassaemia: hepatitis B virus marker studies. 743 Mar 60

To determine the prevalence of hepatitis B virus (HBV), hepatitis C virus (HCV) and human immunodeficiency virus (HIV) markers among Bahraini children with hereditary haemolytic anaemias, a cross-sectional study was conducted at the paediatric outpatient clinic of Sulimaniya Medical Center in the State of Bahrain. A total of 242 patients with hereditary haemolytic anaemias were enrolled in the study: 171 (71%) with sickle cell syndromes, 59 (24%) with beta thalassaemia major and 12 (5%) with alpha thalassaemia. Among the 191 multi-transfused patients, 39 (20.5%) had one or more markers for HBV, 78 (40%) were seropositive for HCV antibody, and three (1.6%) were seropositive for HIV antibody. In contrast, none of the 51 non-transfusion group was seropositive for HBV and HIV antibodies but one patient was seropositive for HCV antibody. HBV, HCV and HIV infections therefore remain a major hazard for children with hereditary haemolytic anaemias, despite blood donor screening. More refined and sensitive tests which would detect infection in all stages of the disease are required. Hepatitis B vaccine should be given to all children with hereditary haemolytic anaemias.
 ...
PMID:Prevalence of hepatitis B, hepatitis C and human immune deficiency virus markers among patients with hereditary haemolytic anaemias. 767 12

In Taiwan, a country with 21 million people, 388 bone marrow transplants (BMTs), 308 allografts and 80 autografts, were performed in 5 BMT centers from November 1983 to October 1993. The commonest indications were leukemia, aplastic anemia, lymphoma and thalassemia. Campaigns promoting an unrelated marrow donor registry were started in August 1993 and recruited approximately 26,000 volunteers. A peripheral stem cell program is just beginning. The overall results of BMT in Taiwan are comparable to other countries. The complications of BMT are similar to Western series, except that acute GVHD was rarer in one large series; this observation needs further study. A particular indication for allogeneic BMT in Taiwan is thalassemia, accounting for 10% of all patients. Disease-free survival after BMT for thalassemia is 44%; graft rejection is the major cause of treatment failure. Another important issue is the role of hepatitis B virus (HBV) in BMT, since the prevalence of HBV infection in Taiwan is very high (> 90%). Abnormal liver function is currently the most common complication and might be related to HBV. Among nearly 100 allogeneic BMTs with HBV carriers as either donor or recipient, 2 patients (approximately 2%) died of HBV-related hepatic failure. Whether the HBV status of the donor and recipient is an important prognostic factor remains to be defined.
 ...
PMID:Bone marrow transplantation in Taiwan: an overview. 792 Feb 98

Autoimmune hemolytic anemia may occur in the course of some viral diseases such as Coxsackie virus, cytomegalovirus, Epstein Barr virus, Influenza A, herpes simplex virus, and rarely hepatitis B virus infection. The role of being heterozygous for beta-thalassemia in hemolysis during acute viral hepatitis is not known. In this report, we present an eight-year-old boy with jaundice and anemia. The diagnosis of hepatitis B virus infection and hemolytic anemia were made on the basis of physical and laboratory findings. A hemoglobin electrophoresis revealed that the child was heterozygous for beta-thalassemia. No specific etiology could be found for hemolytic anemia. It remained unclear whether hemolytic anemia in this patient was merely a coincidental finding or whether hepatitis B virus infection and beta-thalassemia trait had played a role in causing hemolysis.
 ...
PMID:Acute hemolysis in association with hepatitis B infection in a child with beta-thalassemia trait. 797 18


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