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PubMed1996

Parvovirus infection and its treatment.

B19 parvovirus is an important pathogen in man. Acute infection produces fifth disease (erythema infectiosum) in normal individuals, transient aplastic crisis in the patient with haemolysis, and pure red cell aplasia in the immunologically incompetent host. Fetal infection can lead to hydrops fetalis. The target cell of the virus is the marrow erythroid progenitor. The immune response to the virus is largely humoral and directed against limited numbers of epitopes. Persistent infection is due to failure to produce neutralizing antibodies. Because viral infection is prevalent in the population, therapeutic immune globulin preparations are a good source of anti-B19 antibodies. IgG administration can lead to cure of anaemia in the congenitally immunodeficient patient and to its amelioration in AIDS patients with persistent parvovirus infection.

Anemia, Hemolytic↗
PubMedDate not supplied

Parvovirus B19 infection in Behçet's disease.

OBJECTIVE: To investigate whether parvovirus B19 infection is associated with Behçet's disease (BD). METHODS: Serum samples from 41 patients with BD and from 40 age- and sex-matched controls were studied. An ELISA assay was used to detect antibodies against parvovirus B19. RESULTS: Six patients with BD (15.7%) had anti-B19 IgM antibodies in their serum samples indicating a recent infection, while no positivity for IgM antibodies was detected in the control group (p = 0.03). CONCLUSION: Although there have been several reports of B19 infection associated with vasculitis, our findings do not strongly support the involvement of B19 in the pathogenesis of BD. The serological evidence of acute infection in 6 BD patients may be purely coincidental. There was also no positive correlation with the articular and vascular manifestations of BD.

Adult↗
PubMed1996

Transient aplastic anemia caused by parvovirus B19 infection in a heart transplant recipient.

Parvovirus B19 infection in the transplant patient is rarely reported, although cases have occurred in patients with bone marrow, liver, and renal transplants and in children undergoing heart transplantation. We present the first reported case of an orthotopic heart transplant recipient with aplastic crisis caused by parvovirus B19. The infection was diagnosed by bone marrow biopsy, confirmed by serologic studies and polymerase chain reaction, and successfully treated with intravenous immunoglobulin.

Anemia, Aplastic↗
PubMed1997

Maternal serum alpha-fetoprotein and human chorionic gonadotropin in pregnant women with acute parvovirus B19 infection with and without fetal complications.

Maternal serum alpha-fetoprotein (MS-AFP) and human gonadotropin (MS-hCG) were retrospectively determined in 137 sera from 65 pregnant women with an acute parvovirus B19 infection. In 35 of the pregnant women, fetal complications occurred (group 1); in the remaining 30 women, there were no fetal complications (group 2). In group I, significant elevations of MS-AFP were detected in 13 of the 35 women (37 per cent) and of MS-hCG in 25 of the 35 women (71 per cent). In nine of those women, sera were obtained before occurrence of fetal complications and MS-AFP was elevated in one case and MS-hCG in four cases. In one woman, both MS-AFP and MS-hCG were elevated. In group 2, significant elevations of MS-AFP were found in two of the 30 women (6-7 per cent) and of MS-hCG in five of the 30 women (16.7 per cent). Neither MS-AFP nor MS-hCG appears to be a regular early marker for poor pregnancy outcome in parvovirus B19-infected pregnancies, although they were frequently elevated at the time of complications.

Acute Disease↗
PubMed1997

A survey of canine parvovirus-2 in Albania.

Observations were made on 97 dogs that had clinical signs of enteritis and on another group of 68 unvaccinated clinically healthy dogs for detecting the prevalence of serum hemagglutination inhibiting antibody to CPV. Canine parvovirus antigens agglutinating cat RBC were detected in feces or rectal swabs from 72 of 97 dogs. An ELISA to detect CPV antigen in feces and virus isolation on cell culture were also performed. Thirty-one of 72 dogs died. Mortality was exclusively observed in the age group of 0- to 6-month old. Canine parvovirus hemagglutination inhibition antibodies were detected in sera from 45 of 68 unvaccinated dogs examined.

Albania↗
PubMed1997

Lupus syndrome after parvovirus B19 infection.

Systemic lupus erythematosus is uncommon in elderly individuals. A 72-year-old woman developed parvovirus B19 infection followed by a systemic lupus erythematosus-like syndrome with persistent thrombocytopenia and Raynanud's phenomenon. Few cases of systemic lupus erythematosus after parvovirus B19 infection have been reported, and none had thrombocytopenia.

Aged↗
PubMedDate not supplied

Detection of goose and Muscovy duck parvoviruses using polymerase chain reaction-restriction enzyme fragment length polymorphism analysis.

By using primers (AL18F2 and AL18R2) designed from goose parvovirus (GPV) strain IHC, an 806-bp band was amplified by polymerase chain reaction (PCR) from all of 17 samples from Thailand. Specificity to GPV was confirmed by Southern hybridization. With restriction enzyme digestion of the PCR products, two isolates differed from the other 15 isolates by the absence of restriction sites for HincII and BglII and the presence of EcoR1 site. Nucleotide sequence analysis of the PCR products from the different groups revealed that one group is GPV and the other group is Muscovy duck parvovirus (MDPV). Thus restriction enzyme fragment length polymorphism analysis of the PCR products could be used to distinguish GPV and MDPV. The data showed that GPV and MDPV are present in Thailand.

Animals↗
PubMed1997

[Parvovirus B19 as infectious agent in infants].

OBJECTIVE: Since its casual discovery and implication as a human pathogen that provokes transitory aplastic crises and infectious erythema, the B19 parvovirus has been related to a wide spectrum of diseases. To better understand this clinical diversity, we reviewed the cases of a serology positive infants admitted to the hospital. PATIENTS AND METHODS: From January 1992 to June 1995, all clinical charts were reviewed and we obtained 15 patients that had positive IgM antibodies by immunoenzyme assay. RESULTS: The mean age was 12.2 months. No sex differences were seen. The incidence was higher in winter months. Over 50% of the patients belong to the last year studied. Clinical findings included 5 cases of arthritis (one juvenile rheumatoid arthritis, one polyarticular syndrome and 3 nonspecific forms), hematology disturbances in 5 cases (1 case of erythrophagocytosis, 1 of thrombocytopenic purpura, 2 of anemia and 1 chronic neutropenia), 3 cases of febrile syndrome, 1 liver dysfunction, and 1 neuromyelitis. Complementary exams were not significant and follow-up in all infants was satisfactory. CONCLUSIONS: The B19 parvovirus, a poorly understood virus, is related to many clinical situations where is true significance remains unknown.

Age Distribution↗
PubMed1998

Parvovirus: a review.

Infections caused by human parvovirus B19 result in a variety of clinical manifestations, the severity of which depends on the immune and hematologic status of the host. Arthropathy is known to occur in children and adults with acute parvovirus B19 infection. In adults, the arthropathy is common and is usually brief and self-limited, although a chronic arthropathy due to HPV B19 infections can occur rarely. It is important to differentiate between such chronic infection and RA, because of the similar clinical manifestations and different modes of treatment. An association between HPV B19 and other rheumatologic diseases such as vasculitis needs further research before confirmation is possible.

Arthritis↗
PubMed1996

[Ulcers of the tongue, pityriasis lichenoides and primary parvovirus B19 infection].

INTRODUCTION: We report a case of parapsoriasis en gouttes (or pityriasis lichenoides) which presents two peculiarities. First, the patient had lingual ulcerations and second, the eruption appeared during a seroconversion for Parvovirus B19. OBSERVATION: A 25 old woman presented a first episode of characteristic parapsoriasis en gouttes associated with purpuric palmoplantar lesions and lingual ulcerations, reaching deep muscular in histology. DISCUSSION: This observation of parapsoriasis en gouttes, peculiar because of lingual ulcerations, is mostly interesting because of its association with a primo-infection to Parvovirus B19. The receptor of the virus is localised on endothelial cells and that could explain purpuric lesions and ulcerations observed.

Adult↗
PubMed1998

Intra-uterine parvovirus B19 infection and meconium peritonitis.

B19 fetal infection has been associated with hydrops or fetal death. We report four cases of meconium peritonitis in hydropic fetuses with laboratory diagnosis of B19 infection. Parvovirus B19 DNA was detected by in situ hybridization both in cord blood and in amniotic cells in three fetuses, while in one case only cord blood was available and proved positive. Signs of active or recent B19 infection in maternal serum samples were documented only in two cases, which proved positive for specific IgM antibodies anti-B19. Maternal B19 infections were asymptomatic and fetal anomalies were observed during a routine ultrasound scan. A common feature of the hydropic fetuses was the presence of abdominal ascites concomitant with or preceding alterations, suggesting meconium peritonitis. The four pregnancies had a preterm outcome: in two cases infants recovered following surgical treatment, in one case spontaneously, and the other one was stillborn. Since vascular inflammation has been documented in B19 infection and congenital bowel obstruction results from vascular damage during fetal life, our observation suggests the need for investigating B19 infection in the presence of meconium peritonitis for a better understanding of the pathogenetic potential of B19 parvovirus in intra-uterine infection.

Adult↗
PubMed1998

[Parvovirus B19 infection--a meningococcus-like sepsis].

Two otherwise healthy adults with fever and haemorrhagic exanthema are described. In both, primary human parvovirus infection was diagnosed. The clinical picture of fever and haemorrhagic exanthema should always arouse suspicion of serious disease such as meningococcal infection. If the patient is unaffected, however, primary human parvovirus infection should be borne in mind.

Adult↗
PubMed1997

[Virological diagnosis of an outbreak of fever and rashes caused by parvovirus B19, Cuba, 1995].

The results obtained in the study of an a outbreak of fever and rash occurred in Havana City in March, 1995, are reported. Dengue, measles, rubella, herpes simplex, and Epstein Barr were discarded as causal agents of the outbreak in the samples of 35 patients. Parvovirus B19 was identified as the causing agent of the outbreak by the detection of IgM antibodies and the polymerase chain reaction technique (PCR). The infection produced by this agent was confirmed in 14/18 samples (77.7%) by some of the techniques used. This study makes reference to the first outbreak of Parvovirus B19 that was proved in Cuba.

Adult↗
PubMed1997

[Parvovirus B19 atypical acrosyndrome].

INTRODUCTION: Parvovirus B19 infection is a very polymorphic eruption. We describe a new clinical form. CASE REPORT: A 4-year-old child was hospitalized for a painful acrocyanosis localised at the feet and the tip of the nose, which disappeared without any treatment in three weeks. The screening revealed a parvovirus B19 infection. DISCUSSION: This eruption differs from the classic "gloves and socks syndrome" because of the presence of plantar and nasal painful erythrocyanosis and the young age of the child.

Acrodermatitis↗
PubMed1998

High prevalence of parvovirus B19 IgG antibodies among Dutch hemophilia patients.

BACKGROUND AND OBJECTIVES: Human parvovirus B19 is a potential risk to hemophiliac patients receiving blood products. MATERIALS AND METHODS: To determine the prevalence of the corresponding antibody in patients with hemophilia A or B von Willebrand's disease, we tested 326 hemophilia patients for anti-B19 IgG. The results were compared with those of 203 age-matched controls (male blood donors and children). RESULTS: The overall prevalence of B19 IgG in the hemophilia patients was 302/326, and in the controls 123/203. Below the age of 10, hemophilia patients had a higher prevalence of B19 IgG (76%, 42/55) than the controls (23%, 11/48; p < 0.00001). In those below the age of 5 who had been treated exclusively with monoclonally purified concentrate, it made no difference whether the product was pasteurized or solvent-detergent treated. There was significantly lower incidence in patients who were rarely treated. CONCLUSION: Parvovirus B19 if frequently transmitted in blood products. Existing virus-inactivating methods do not prevent transmission.

Adolescent↗
PubMed1998

Analysis of genetic diversity in the VP1 unique region gene of human parvovirus B19 using the mismatch detection method and direct nucleotide sequencing.

To assess the prevalent genetic types of human parvovirus B19 strains derived from various sources and their relation to particular clinical symptoms, the genetic diversity in the VP1 unique region, which is important for the neutralizing response to human parvovirus B19, was examined by the mismatch detection method using the Non-isotopic RNase Cleavage Assay (NIRCA) and direct nucleotide sequencing. Twenty three samples obtained between 1986 and 1997 were examined. Three electrophoresis patterns were observed with NIRCA. The nucleotide sequence showed that there were 14 nucleotide changes and 4 amino acid substitutions in comparison with Au strains employed as a standard strain. The nucleotide variability of all samples ranged from 0.3 to 2.7% and the amino acid variability ranged from 1.0 to 3.0%. They were classified into three types according to NIRCA. Types 1 and 3 had similar sequences, but the type 2 sequence was quite different. Although there were some nucleotide variations in the same NIRCA type, these were silent. However, there was no relationship between the clinical features and NIRCA types or between clinical features and the nucleotide sequence. All samples obtained before 1987 were NIRCA type 2. On the other hand, 19 of 20 samples obtained after 1989 were NIRCA type 1. The other sample obtained in 1992 was type 3. The results suggest that the B19 strain of type 2 disappeared by 1988 and changed to other B19 strains such as type 1 and type 3 after 1988, indicating a correlation between genome type and prevalence. NIRCA is a convenient method for screening mutations due to its simplicity and quickness.

Adolescent↗
PubMedDate not supplied

Human parvovirus B19--flushed in face though healthy (fifth disease and more).

Parvovirus B19 is an ubiquitous organism. Although for many years it had been "a virus in search of a disease," it is now known to be associated with several clinical entities ranging from the benign to severe. The most significant aspect of parvovirus B19 is its effect on the fetus. Research has demonstrated the risk, although minimal, of fetal loss to be between 1.5% to 2.5%. The effect from an emotional standpoint for the pregnant exposed or infected woman is more difficult to quantify. It is imperative that nurses who care for children be well informed about the virus and able to implement a comprehensive plan.

Erythema Infectiosum↗
PubMed1998

Dose-dependent regression of HeLa cell-derived tumours in SCID mice after parvovirus H-1 infection.

Parvoviruses of rodents are endowed with oncosuppressive properties. In particular, parvoviral infections protect host animals from spontaneous and chemical- or virus-induced tumour initiation in laboratory animals. The present study was undertaken to substantiate the capacity of parvovirus H-1 to inhibit therapeutically the growth of established tumours originating from human carcinoma cells implanted in recipient mice. To this end, quickly growing s.c. carcinomas were established by injection of human cervical carcinoma cells (HeLa) into immunodeficient (SCID) mice. Tumour-bearing mice subsequently were inoculated with H-1 at various multiplicities of infection. H-1 virus infection led to regression of tumours, the onset and efficiency of which were dose-dependent.

Animals↗