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Biomedical subjects

A Rodríguez-Torres

Publications and source records attributed to A Rodríguez-Torres.

9 recordsLinked to original sources
PubMed1992

Infection by hepatitis B and C virus in non-intravenous drug using female prostitutes in Spain.

We have studied the prevalence of hepatitis B (HBV) and hepatitis C virus (HCV) serologic markers in female blood donors and in female prostitutes and the relationship of antibodies to hepatitis B core antigen (anti-HBc) and of antibodies to HCV (anti-HCV) with the presence of treponemal antibodies (FTA-ABS) in non-intravenous drug using female prostitutes. Hepatitis B surface antigen (HBsAg) was found in 1.0% of the female blood donors, anti-HBc in 15.6% and anti-HCV in 0.7%. In the prostitutes, the prevalence of HBsAg was 6.1%, anti-HBc was positive in 29.0% and anti-HCV in 8.8%. No significant statistical association between the prevalence of anti-HBc or anti-HCV and the age of prostitutes (p = 0.9111 and p = 0.8254 respectively) or the length of time as prostitutes (p = 0.3583 and p = 0.5770) was found. FTA-ABS positive prostitutes had a significantly higher prevalence of anti-HCV than FTA-ABS negative prostitutes (p < 0.001). No statistical association was found between anti-HBc antibodies and positive FTA-ABS prostitutes (p = 0.336).

Adolescent↗
PubMed1990

[Search for antibodies against human immunodeficiency virus type 2 (HIV-2) in a sample of parenteral drug addicts (IVDA)].

We have retrospectively investigated the antibodies against type 2 human immunodeficiency virus (Ac HIV-2) in sera from parenteral drug abusers (PDA) who had been previously investigated for HIV-1 and who fulfilled established criteria (trips, sexual contacts, etc.). Enzyme immunoassay (EIA) was positive in 7 individuals who were also carriers of HIV-1. When HIV-2 was confirmed with Western blot, in only one case a tenuous band against glycoprotein 105 (gp 105) and the remaining ones from the core was found.

Adult↗
PubMedDate not supplied

Thermolytical techniques to characterize fungal polysaccharides and bacterial lipopolysaccharides.

The present work constitutes an entirely novel contribution in the scope of microbiology and especially in taxonomy, introducing thermolysis curves as a rapid method of characterization of fungal polysaccharides and bacterial lipopolysaccharides. The thermal analysis techniques applied were thermogravimetry and derivative thermogravimetry (TG-DTG), differential thermal analysis (DTA), and differential scanning calorimetry (DSC). Each thermogram of a sample is represented by one or a few temperatures and, in DSC, by complementary enthalpy data. The temperatures of the thermograms from structurally unknown polysaccharides are compared with those used as references, and thus, information on their composition, linkage types, and anomeric configuration can be deduced. The situation is more complicated for bacterial lipopolysaccharides, but in whatever mode, a structural estimation is always possible. In the course of the development and validation of the thermal method, structural findings on relative stabilities of linkage types (valuable in carbohydrate research) have been recognized and are therefore also described in this work.

Biotechnology↗
PubMedDate not supplied

Prevalence of anti-hepatitis C virus antibodies in positive FTA-ABS non-drug abusing female prostitutes in Spain.

The prevalence of antibodies against Hepatitis C Virus (anti-HCV antibodies) and its association with the presence of treponemal antibodies (FTA-ABS) was studied in 227 non-drug abusing female prostitutes. The overall anti-HCV antibody prevalence was 8.8%, and a significantly higher prevalence of anti-HCV antibodies was found in prostitutes testing positive for FTA-ABS (19.4%) than in prostitutes testing negative for FTA-ABS (3.9%) (PR = 5.023, P less than 0.001). No statistical association was found between patient age or the duration of prostitution and the presence of anti-HCV antibodies.

Adult↗