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  • 1
    ISSN: 1432-1076
    Keywords: HIV infection ; Acquired immunodeficiency syndrome ; AIDS-related complex ; Thalassaemia major ; Transfusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We investigated the incidence, clinical and immunological characteristic of human immuno-deficiency virus (HIV) infection in a group of multi-transfused patients with thalassaemia major who were exposed to transfusion-associated HIV infection. Seropositivity to HIV by Western blot and immunofluorescence analysis was detected in 26 out of 590 patients. At a follow up 21–40 months later, none of these seropositive patients had developed acquired immuno-deficiency syndrome (AIDS), and six manifested the AIDS related complex (ARC). ARC was unusually mild and consisted of moderate laterocervical and submandibular lymph node enlargement associated with hypergammaglobulinaemia and a reduced CD4/CD8 ratio resulting from the decreased number of CD4 lymphocytes. These findings suggest that multi-transfused patients with thalassaemia major are relatively resistant to the development of severe manifestations of HIV infection, presumably because their immune status is relatively better preserved than that of other infected population. Longer follow up is, however, necessary to determine whether the incidence of AIDS will be lower in this population or whether overt AIDS merely takes longer to develop.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0003-2670
    Keywords: Bovine urine ; Enzymatic methods ; Enzyme-linked immunosorbent assay ; Immunoassay ; Urine ; β-Agonists
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A new analytical approach for the determination of organotin compounds (OTC) in mussel samples has been developed and evaluated. A preliminary step, performed by graphite furnace atomic absorption spectrometry (GFAAS) for the total tin determination may be followed by gas chromatographic-mass spectrometric (GC/ MS) speciation only for the characterization of those samples exhibiting total tin concentration higher than 30 ng/g wet weight (GFAAS limit of detection). The GFAAS method was optimized using Pd nitrate under reducing conditions as matrix modifier to minimize NaCl interferences. Organotins were derivatized with a Grignard reagent for GC/MS analysis (TBT limit of detection = 80 ng/g). An application of this strategy was performed on mussel samples collected from the Venetian Lagoon.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of epidemiology 10 (1994), S. 279-283 
    ISSN: 1573-7284
    Keywords: Drug addicts ; HBV ; HCV ; HDV ; HIV
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Hepatitis viruses and the acquired immunodeficiency viruses often infect intravenous drug addicts (IVDAs). Our study includes 255 IVDAs (26 females and 229 males, aged 20–35 years) from Cagliari. Of 255 subjects examined, 207 (81.1%) were positive for anti-HCV and 84 (32.9%) for anti-HIV. Nineteen (7.4%) subjects were HBsAg carriers, and 12 of these (63%) had an HDV super-infection. Markers of previous HBV infections were tested in 223 cases and 137 (61.4%) were found positive; of these 14 (10.2%) also had HDV infection. Of the 223 drug addicts examined for all infection markers, 18 (8%) were negative to all markers, 46 (20.6%) were positive to only one, 89(39.9%) were positive to two, 64 (28.7%) to three and 6 (2.6%) were positive to all. Subjects with a single infection were significantly fewer than those with multiple infections. The correlations studied among the various markers did not point out any statistically significant associations. Even so, a previous HBV infection was more common while active HBV/HDV infections were less common among subjects with anti-HCV; HDV infection was more common among HIV-positive subjects. In HBsAg carriers neither HBV-DNA nor HCV-RNA was detected; HCV-RNA was found more frequently in anti-HIV positive subjects than in subjects with the anti-HCV isolate.
    Type of Medium: Electronic Resource
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