The damping characteristics of Ti50Ni50-xCux (x = 0~30 at.%) shape memory alloys (SMAs) at a low frequency have been studied using a dynamic mechanical analyzer. The magnitude of the tan δ value and the values of the storage modulus (E₀) softening/hardening and the strain variation exhibited in B2↔B19 transformation are all higher than those in B2↔B19' transformation. The larger E₀ softening/ha...

Erythroid progenitor cells are the main target for B19 parvovirus infection. The UT7 cell line demonstrates a marked erythroid differentiation on induction by erythropoietin (EPO) (UT7/EPO cells) and therefore appears to be a potential target for B19 parvovirus. We aimed to evaluate the presence and localization of B19 nucleic acids in UT7/EPO cells by in situ hybridization. Three digoxigenin-l...

Parvovirus B19 has been associated with different diseases, such as erythema infectiosum, arthropathy and transient aplastic crisis. However, parvovirus B19 infection presenting as hepatic dysfunction and myelosuppression is rarely reported in adult patients. Herein, we report an adult case of acute parvovirus B19 infection presented with acute liver failure and myelosuppression. After being tr...

Parvovirus B19 is a small non-enveloped single-stranded DNA virus of the family Parvoviridae and genus Erythrovirus. B19 virus is most known for causing erythema infectiosum (fifth disease) in children as well as numerous other diseases such as arthropathy in adults, Transient aplastic crisis in patients with increased erythropoiesis and persistent anemiain in immunocompromised patients. Parvov...

Ataxia, a gross lack of motor control, is symptomatic of broader neurological disorder, typically of the cerebellum. A few case reports have documented the association of primate erythroparvovirus 1 [more commonly known as human parvovirus B19 (B19)] with ataxia. Parvoviruses are small DNA viruses that infect many different species. B19 is a well-known cause of erythema infectiosum, a common ra...

background: parvovirus b19 (b19) is the only member of the family parvoviridae associated with human infection. al­though there are some studies to estimate the immunity to parvovirus in various populations but there is no seroepidemiologi­cal sur­vey from iran until now thus the age-specific immunity to human parvovirus infection was esti­mated. methods:  a subset sample of 1500 study subjects...

Increased recognition of parvovirus B19 (B19), an erythrovirus, as a significant human pathogen that causes fetal loss and severe disease in immunocompromised patients has resulted in intensive efforts to understand the pathogenesis of B19-related disease, to improve diagnostic strategy that is deployed to detect B19 infection and blood-product contamination and, finally, to elucidate the natur...

Kidney transplant (KT) recipients can develop symptomatic Parvovirus (PV) B19 infections, frequently associated with persistent anemia. The aim of this study was to evaluate the prevalence and clinical significance of PV B19 infection in anemic and non-anemic KT patients. Overall, out of 64 patients monitored for the presence of PV B19 by real-time PCR, 2 (3.12%) had an active PV B19 infection,...

Parvovirus B19 infects predominantly erythroid cells, leading to transient inhibition of erythropoiesis. Immunocompromised patients may be unable to produce neutralizing antibodies and may develop severe chronic anemia. Epidemiological studies done on Niterói population showed that B19 infection occurs periodically in late spring and summer. We report a study from 55 HIV infected patients atten...

Parvovirus B19 (B19) DNA was detected by dot blot hybridization in sera from 5 (17%) of 30 human immunodeficiency virus (HIV)-infected patients with hematocrits (HCT) of < or =24 and 4 (31%) of 13 HRV-infected patients with HCT of < or =20, suggesting that B19 is a reasonably common cause of severe anemia in HIV infection. The anemia promptly remitted after immunoglobulin therapy in 3 of 4 trea...