Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0019158 (hepatitis)
 30,205 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A recent analysis demonstrated a change in incidence approaching 100% for diseases against which we routinely immunize in the United States. At present, measles, mumps, rubella, invasive Haemophilus disease, poliomyelitis, diphtheria and tetanus are well-controlled but not eliminated. Diseases that now pose special problems include pertussis, hepatitis A and B and varicella. The incidence of pertussis surged in 1994, possibly in part because of waning immunity in the immunized population. Acellular pertussis vaccines are available for booster doses in children but are not now recommended for adults. Licensure of acellular pertussis vaccines for primary immunization of infants is eagerly awaited. Recombinant hepatitis B vaccine has been licensed for more than 10 years but there has been little change in disease incidence in the United States. Routine immunization of infants is now recommended but concerns exist about cost and persistence of immunity into adolescence. Inactivated hepatitis A vaccines appear to be highly effective in preventing clinical hepatitis and controlling epidemics. Potential target populations include military personnel, day-care attendees and travelers. Hepatitis A vaccine may be recommended for all children after approval by the United States Food and Drug Administration and if a combination vaccine becomes available. A live, attenuated varicella vaccine developed in 1974 and unlicensed in the United States is safe and highly effective in preventing varicella in healthy and immunocompromised populations. It also appears to reduce subsequent development of herpes zoster. Vaccines against pneumococci (conjugate vaccine), respiratory syncytial virus, rotavirus, tuberculosis and human immunodeficiency virus are needed. Research and technology to develop these vaccines must be developed, and efficient delivery mechanisms must be created and implemented.
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PMID:Present and future challenges of immunizations on the health of our patients. 763 35

Current US military recruit vaccination policy presumes that recruits have had a complete childhood immunization series. This assumption may not be appropriate for recruits from Micronesia, who may have had limited access to modern health care, including immunization programs. During 1988 and 1990, a cross-sectional serosurvey was conducted among 66 US military recruits, 56 from the Federated States of Micronesia and 10 from the Republic of the Marshall Islands, collectively referred to as Micronesia. Antibody seronegativity levels for 12 vaccine-preventable (or potentially so) diseases were: measles (52%), mumps (14%), rubella (21%), varicella (38%), diphtheria (39%) tetanus (0%), polio type 1 (4%), polio type 2 (0%), polio type 3 (14%), hepatitis A (9%), hepatitis B (17%), and hepatitis C (98%). Compared with Army recruits in general, Micronesian recruits were significantly more likely to be seronegative for measles and varicella and seropositive for hepatitis types A and B. Personal histories of disease were felt to be inadequate in predicting antibody status.
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PMID:Vaccine-preventable disease susceptibility in a young adult Micronesian population. 777 28

Fifteen cases of Gullian-Barre syndrome (GBS) following specific infection are reported. The infections include varicella, 7 infective hepatitis, 4 measles, 2 and mumps, 2. There are no specific clinical or electrophysiological features which serve to distinguish GBS seen in association of these infections from those seen in other clinical settings. There is epidemiological evidence to suggest the association between GBS and hepatitis A, and non A non B hepatitis is more of a chance occurrence. Detailed epidemiological studies are needed to established a clear relationship between other specific viral infections and GBS.
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PMID:Guillain-Barre syndrome following specific viral infections--an appraisal. 783 43

Viral exanthems can be classified as erythematous vesicular and papular. The majority are erythematous with the most common viral causes being non polio enteroviruses, respiratory viruses, acute. Epstein-Barr virus, human herpes viruses 6 and 7, and parvovirus B-19. Measles, rubella, mumps, acute GMV, hepatitis viruses. HIV seroconversion, Ross River and Barmah Forest viruses are less commonly seen. The differential diagnosis includes drug eruption, erythematous bacterial exanthems and Kawasaki's syndrome.
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PMID:Viral exanthems in childhood. 871 3

The effects of immunisation programmes that have existed for several decades in developed countries are demonstrated by the decrease and even eradication of smallpox, poliomyelitis, measles, mumps and hepatitis B. Cost, health policy and spontaneous evolution in the incidence of communicable diseases have a decisive influence on the use of a vaccine. Investment in vaccination policy has to be encouraged to maintain this progress made in the control of infectious diseases and to meet new challenges. Studies re-evaluating ongoing immunisation programmes are scarce. Nevertheless, it can be concluded that for vaccination against hepatitis B in professionally exposed at-risk populations, arguments for positive returns are consistent. The same holds for vaccination against S. pneumoniae and for influenza virus in the elderly. The results of the economic evaluation of revaccination against measles, when insufficient coverage exists, are inconclusive. Universal vaccination of children against Haemophilus influenzae type b (Hib) and of children of hepatitis B-positive mothers against hepatitis may require costs to be paid in order to gain extra health benefits.
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PMID:Pharmacoeconomics of immunisation: a review. 1014 92

The incidence of hepatitis B virus infection in Italy is 10 per 100, 000 population, with most cases occurring in young adults. Vaccination against hepatitis B has been compulsory since 1991 for all newborns and 12-year-olds. In the Puglia region, this programme has reduced the incidence of hepatitis B from 7.4 per 100,000 population in 1990 to 2.4 per 100,000 population in 1996. The number of notified cases of hepatitis B in Puglia decreased from 212 in 1992 to 73 in 1997. As 50% of these cases occurred in young adults, the main aim of the current vaccination programme is to achieve high coverage rates among teenagers and young adults within the next few years. Although the incidence of hepatitis A is only about 5 per 100, 000 overall in Italy, Puglia is an area of intermediate endemicity with a seroprevalence of antibodies to hepatitis A virus (anti-HAV) of about 40% in 18-year-olds. The incidence of hepatitis A is up to 30 per 100,000 between the periodic outbreaks that occur every 2-4 years. Most notified cases occur in adolescents and young adults. The last outbreak of about 11,000 cases of hepatitis A in the Puglia region occurred in 1996-1997, mainly in the summer months in towns with harbours or near the coast. The most important risk factor was initially consumption of raw seafood, but later was personal contact, probably between children. A vaccination programme against hepatitis A was initiated in Puglia in 1997, aiming to vaccinate all infants of 15-18 months and all 12-year-olds against hepatitis A. Infants receive monovalent hepatitis A vaccine with the first dose of mumps/measles/rubella vaccine. Monovalent hepatitis vaccine can be given with the second and third doses of hepatitis B vaccine in 12-year-olds, but use of combined hepatitis A and B vaccine is recommended to aid compliance and reduce the commitment of physician/nurse time. Vaccination can be performed in school.
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PMID:From hepatitis B to hepatitis A and B prevention: the Puglia (Italy) experience. 1068 58

A complete DNA copy of the genome of a Jeryl Lynn strain of mumps virus (15,384 nucleotides) was assembled from cDNA fragments such that an exact antigenome RNA could be generated following transcription by T7 RNA polymerase and cleavage by hepatitis delta virus ribozyme. The plasmid containing the genome sequence, together with support plasmids which express mumps virus NP, P, and L proteins under control of the T7 RNA polymerase promoter, were transfected into A549 cells previously infected with recombinant vaccinia virus (MVA-T7) that expressed T7 RNA polymerase. Rescue of infectious virus from the genome cDNA was demonstrated by amplification of mumps virus from transfected-cell cultures and by subsequent consensus sequencing of reverse transcription-PCR products generated from infected-cell RNA to verify the presence of specific nucleotide tags introduced into the genome cDNA clone. The only coding change (position 8502, A to G) in the cDNA clone relative to the consensus sequence of the Jeryl Lynn plaque isolate from which it was derived, resulting in a lysine-to-arginine substitution at amino acid 22 of the L protein, did not prevent rescue of mumps virus, even though an amino acid alignment for the L proteins of paramyxoviruses indicates that lysine is highly conserved at that position. This system may provide the basis of a safe and effective virus vector for the in vivo expression of immunologically and biologically active proteins, peptides, and RNAs.
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PMID:Rescue of mumps virus from cDNA. 1077 22

There are a large number of viruses, such as cytomegalovirus, Epstein-Barr, Herpes simplex, mumps, varicella, yellow fever, etc., known to cause inflammatory disease of the liver, but the term viral hepatitis generally refers to the five well described hepatotropic viruses which are divided into enteral and parenteral groups based on their mode of transmission. Hepatitis A and E viruses are enterically transmitted by the faecal-oral route and do not exist in a chronic carrier state. Hepatitis B, C and D viruses are parenterally transmitted, occur both in the acute and chronic forms, and, when they persist in a chronic carrier state, they serve as a reservoir for infection and give rise to chronic hepatitis, cirrhosis and hepatocellular carcinoma. Hepatitis G virus has recently been described but its significance in the causation of human liver disease is yet to be established. Also, the most recently described TT virus in patients with post-transfusion hepatitis awaits further studies. Acute sporadic and epidemic viral hepatitis are common world-wide, mostly in the developing countries, including Ethiopia, and account for high morbidity and mortality, especially among pregnant women. Chronic infection with hepatitis B virus is a significant problem on a global scale, affecting over 300 million people. Hepatitis C virus infection is probably the most common cause of chronic viral hepatitis, end-stage liver disease and hepatocellular carcinoma in the world, especially in sub-Saharan Africa, including Ethiopia. Therefore, this article will review and highlight the relevant epidemiological, preventive and therapeutic aspects of viral hepatitis with emphasis on new developments and recent data obtained from Ethiopian studies.
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PMID:Epidemiology, prevention and treatment of viral hepatitis with emphasis on new developments. 1114 85

CMV (cytomegalovirus) is one of the Herpesviridae, known for their potential for latency and reactivation. The sequelae of fetal infection are diverse: chronic stage of early fetal infection with brain anomalies, symptomatic late fetal infection with hepatitis and thrombocytopenia and asymptomatic infection. With any of these clinical phenotypes, permanent hearing loss is possible. CMV-infection is the only relevant viral cause of perinatal hearing loss because rubella, measles and mumps have become rare due to vaccination. Recent studies have suggested beneficial effects on outcome of i.v. ganciclovir treatment in symptomatic cases. We have recently taken the challenge of treating asymptomatic newborns on the basis of active sonographic brain lesions in order to prevent labyrinth destruction. We would also like to stress the importance of suspecting children with congenital hearing loss, or hearing loss that develops in the first year of life, of having an asymptomatic congenital CMV-infection. Follow up in the first years of life is necessary in these children because further progression of hearing loss is possible.
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PMID:Congenital CMV-infection and hearing loss. 1120 44

Syncytial giant cell hepatitis in the neonatal period has been associated with many different etiologic agents and may present initially as cholestasis. Infectious causes are most common and include: (1 ) generalized bacterial sepsis, (2) viral agents, (3) toxoplasmosis, (4) syphilis, (5) listeriosis, and (6) tuberculosis. Viral hepatitis may be due to cytomegalovirus, rubella virus, herpes simplex, HHV-6, varicella, coxsackievirus, echovirus, reovirus 3, parvovirus B19, HIV, enteroviruses, paramyxovirus, and hepatitis A, B, or C (rare). Giant cell hepatitis may result in fulminant liver failure with massive hepatocyte necrosis and severe liver dysfunction leading to death, resolution with severely compromised liver function, or liver transplantation. The authors report a 6-week-old male who had an unremarkable perinatal period, became jaundiced after developing diarrhea, and subsequently developed liver dysfunction with massively increased liver enzymes and a coagulopathy. Open wedge and core liver biopsies were performed to determine if the patient should be listed for liver transplantation. Giant cell hepatitis with a significant mixed lymphocytic and neutrophilic infiltrate was present on both the wedge and core biopsies. The residual 60% of hepatocytes had ballooning degeneration and many possessed pyknotic nuclei. The hepatocytes were arranged in a pseudoacinar pattern. Electron microscopy showed paramyxoviral-like inclusions in the giant cells, characterized as large inclusions with fine filamentous, beaded substructures (18-20 nm). Paramyxoviridae are nonsegmented, negative-sense, single-stranded RNA viruses. This family is divided into the Paramyxovirinae subfamily containing respirovirus (Sendai virus, parainfluenza virus type 3), rubulavirus (mumps, parainfluenza virus type 2), and morbillivirus genera (measles); and Pneumovirinae subfamily (pneumovirus genus [respiratory syncytial virus]). Supportive care to determine if hepatic function resolves following the viral episode, liver transplantation with fulminant liver failure, and ongoing evaluation in those who recover to assess chronic liver disease are necessary. Ultrastructural evaluation may unmask the etiologic agent for hepatitis and direct therapy.
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PMID:Neonatal syncytial giant cell hepatitis with paramyxoviral-like inclusions. 1129 22


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