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Detection of Human Parvovirus (B19) in Beta Thalassemia Major Patients
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Abstract<sec> <title>Background:

Beta-thalassemia major (β-TM) is inheritable condition with many complications especially in children. The blood-borne viral infection was proposed as a risk factor due to recurrent blood transfusion regimen (hemotherapy).

Objectives:

This study aimed to investigate Human parvovirus B19 (PVB19) prevalence in β-TM patients by serological and molecular means.

Materials and Methods:

This is a cross-sectional study incorporated 180 subjects, segregated into three distinct groups, namely, control (n = 60), β-TM (n = 60), and β-TM infected with hepatitis C Virus (HCV) (n = 60). The enzyme-linked immunosorbent assay for qualification detection of PVB19 was employed, and then real-time detection of PVB19 was done for revealing viral copy number in different groups, alongside other risk factors were explored.

Results:

Both PVB19 IgM and IgG antibodies positivity rates are higher among β-TM patients compared to controls, the PVB19 IgM (35%) and PVB19 IgG (21.67%) positivity in β-TM patients compared to 23.3% and 18.33% positivity in the controls was significantly observed. The mean of PVB19 copy number interestingly higher in control (21.58 ± 1.95) compared to β-TM patients infected with HCV (4.75 ± 1.58). Moreover, serum ferritin showed a significant increase in β-TM patients with HCV (4283.22 ± 351.92) compared to control (28.55 ± 1.06).

Conclusion:

Both PVB19 IgM and IgG Abs positivity rates are higher significantly among β-TM patients compared to controls. Although, the highest mean PVB19 copy number among controls, this finding was not significant. Nevertheless, screening high-risk groups including blood donors for PVB19 may considerably reduce the prevalence of PVB19.

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Publication Date
Tue Jan 18 2022
Journal Name
Materials Science Forum
The Effect of Gamma Radiation on the Manufactured HgBa&lt;sub&gt;2&lt;/sub&gt;Ca&lt;sub&gt;2&lt;/sub&gt;Cu&lt;sub&gt;2.4&lt;/sub&gt;Ag&lt;sub&gt;0.6&lt;/sub&gt;O&lt;sub&gt;8+δ&lt;/sub&gt; Compound
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In this article four samples of HgBa2Ca2Cu2.4Ag0.6O8+δ were prepared and irradiated with different doses of gamma radiation 6, 8 and 10 Mrad. The effects of gamma irradiation on structure of HgBa2Ca2Cu2.4Ag0.6O8+δ samples were characterized using X-ray diffraction. It was concluded that there effect on structure by gamma irradiation. Scherrer, crystallization, and Williamson equations were applied based on the X-ray diffraction diagram and for all gamma doses, to calculate crystal size, strain, and degree of crystallinity. I

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