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Biomedical subjects

M del Alamo

Publications and source records attributed to M del Alamo.

6 recordsLinked to original sources
PubMed2000

Behavior of monosaccharides, phenolic compounds, and color of red wines aged in used oak barrels and in the bottle.

A red wine with appropriate basic quality characteristics for aging was stored in oak barrels for 12 months and then bottled and aged for a further 6 months. The same ambient conditions of temperature and humidity were maintained throughout the entire aging process. The barrels used were made from three different species of oak by four different cooperages and had been used for at least two years. Analysis of variance and principal component analysis were run on the values for hexoses, pentoses, total anthocyanins, ortho-diphenols, low- and high-polymer polyphenols, and color parameters to study the behavior of the monosaccharides and polyphenols in response to the factors of aging time, the oak variety employed, and the source cooperage where the barrels had been made. Time trends for all the phenolic components were directly related to aging time, with low-polymeric polyphenols (LPPs) being the most affected by wood type and source cooperage. Wine color was defined by a basic red color which decreased with aging time in the barrel and was altered by yellowish pigment components differing for each of the barrels in which oxidative aging took place and by increased stability of the blue copigments. Principal component analysis showed that samples of the same source wine aged in different barrels tended to be grouped together according to each of the aging intervals considered.

Color↗
PubMed2000

[Intravenous drug users serologic control: what may be prevented?].

OBJECTIVE: To report of IDU serologic control done in 1997 in comparison with another of 1990, in a Health-Care Area of Madrid, Spain, focussing to hepatitis B virus prevention. PATIENTS AND METHODS: Cross-sectional study. LOCATION: Fuenlabrada-Leganés, 400,000 inhabitants Health-Care Area in the Southeast of Madrid. PATIENTS: 233 IDU submitted for serological study during 1997 (mean age, 29.5; standard deviation, 6.8; 85.8% males). INTERVENTIONS: HIV, HBV, HCV and Treponema pallidum; serological markers were done at Severo Ochoa Hospital and a search for previous reports since 1991. Study of HBV previous vaccination was done with HBsAb marker in HBV seronegative patients. RESULTS: Prevalence: HBV 39.5% (IC = 33.2-46.1), HCV 49.3% (IC = 42.8-55.9), HIV 11.1% (IC = 7.5-16.1), syphilis 3.4% (IC = 1.5-7). Statistically meaning falls in rates were detected comparing them with results from 1990 (HBV: 67.5%; HCV: 75.1%; HIV: 50.1%; n = 261; p < 0.001). Only 5 (3.55%) out of 141 HBV seronegative patients showed HBsAb titres above 10 mU/I, although 55 (39%) of them had been tested for HBV previously. Nineteen (20.6%) out of 92 patients with HBV markers had previous seronegative reports and 3 of them suffered an acute viral infection. CONCLUSIONS: We have seen a statistically meaning fall in seroprevalence of the studied agents although a low HBV vaccination rate was achieved.

Adult↗
PubMed1998

[Need for systematic HIV serological study during pregnancy].

BACKGROUND: To evaluate human immunodeficiency virus (HIV) screening usefulness in pregnancy and to know the prevalence of this infection in an urban area of Spain. PATIENTS AND METHOD: Routine prenatal screening for antibodies to HIV was offered to pregnant women from Fuenlabrada-Leganés Health Care Area (Madrid) from 1992 to 1995. Unlinked anonymous screening of HIV was done with the sera from women refusing the assay or if it had not been offered. RESULTS: HIV prevalence was 0.28% (CI: 95%; 0.19 to 0.40) in the 11.021 pregnant women group studied. 87.1% pregnant seropositive women were detected by consented screening. 55.6% of them recognized risk behavior (73.33% by intravenous drug use) and 44.4% did not do it. With a second anamnesis in this group 75% admitted risk conducts and 25% confirmed their ignorance about them. CONCLUSIONS: HIV seropositive screening in pregnant women selected only by risk behavior may be unsuccessful. For that reason, it is more convenient the perform a routine test for detection of HIV antibodies after informed consent in high prevalence areas of HIV infection.

AIDS Serodiagnosis↗