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Biomedical subjects

A Suárez

Publications and source records attributed to A Suárez.

At least 19 recordsLinked to original sources
PubMed1992

Prevalence of antibodies against hepatitis C virus in primary biliary cirrhosis and autoimmune chronic hepatitis.

We have determined the prevalence of antibodies against hepatitis C virus (anti-HCV) in 45 patients with primary biliary cirrhosis (PBC) and 6 with autoimmune chronic active hepatitis (AI-CAH). Anti-HCV was positive in two cases of PBC, both with a history of previous blood transfusion, and in one patient with AI-CAH, only during an active phase of the disease.

Autoimmune Diseases↗
PubMed1992

Prevalence of antibody to hepatitis C virus in acute non-A, non-B hepatitis in patients from different epidemiological categories.

The prevalence of antibodies to hepatitis C virus (HCV) was determined in 65 patients with acute non-A, non-B hepatitis (NANBH). The results suggest that HCV is the most common causative agent in posttransfusion NANBH and in drug-related hepatitis. Detection of HCV antibodies does not appear to be a particularly useful diagnostic criterion due to the kinetics of the immune response in the course of the disease.

Hepacivirus↗
PubMed1992

Antibody to hepatitis C virus in acute, self-limited, type B hepatitis.

Sera from 104 patients with self-limited, acute type B hepatitis were tested for the presence of anti-HCV antibodies. The results show that especially drug users with acute type B (and occasionally coinfected with type D) hepatitis commonly are infected with HCV. Furthermore, HCV infection may have preceded infection with the other agents and may be responsible for high ALT levels.

Alanine Transaminase↗
PubMed1992

Prevalence of antibody to hepatitis C virus in chronic HBsAg carriers.

The presence of the anti-HCV antibody was investigated in sera from 102 chronic HBsAg carriers. The subjects varied as to the characteristics of the clinical states. It was found that HCV coinfection was more common in HBsAg positive intravenous drug addicts than in other parenteral risk groups. It also appears that HCV may be the causative agent of chronic liver disease in HBsAg carriers with undetectable HBV (and possibly HDV) replication.

Carrier State↗
PubMed1992

[The prevalence of HCV antibodies in 3 groups with distinct patterns of sexual activity].

We studied the prevalence of antibodies to hepatitis C virus (anti-HCV) among 164 heterosexual partners of anti-HCV-positive subjects, 131 prostitutes and 52 homosexual men. 6.7% of heterosexual monogamous partners had anti-HCV; the seropositivity rate was associated with a long-term sexual practice and with age. Of the 131 prostitutes, 6 (4.6%) had anti-HCV; there were significant associations in patients positive for anti-HCV, with a history of parenteral drug addiction. 11.5% of homosexual men were anti-HCV positive; there were significant associations with positivity for antibodies to HIV, intravenous drug abuse and with the number of sexual partners. We concluded that the HCV may be transmitted by sexual route, but the high seroprevalence among prostitutes and homosexuals may be explained by other parenteral mechanisms.

Age Factors↗
PubMed1992

[Development of an energy food for athletes].

The energetic requirements of sportsmen fluctuates between 3500 and 8000 Kcal/day. In order to fill these needs it is necessary to have new alternative products which provide the extra required energy. For this purpose a confectionary was designed and elaborated consisting of five different bars, made of natural raw materials (dehydrated fruits, milk, eggs, nuts, fat), which supply an important quantity of fats and carbohtdrates, minerals, and vitamins. The confectioned bars were: papaya, hazelnut, almond, apple and orange. These bars are supposed to be eaten between meals as a complement of the nutrients of the usual diet. The production process is an adaptation of the traditional confectionary techniques and was improved for the 5 bars. The production process of the coating sheet (oblate) was also studied. The controls showed that all the bars had a good microbiological quality and an excellent sensory quality. The humidity fluctuated between 6.85 and 13.66%., with an aw of 0.795. The caloric distribution per cent was 8:40:52. The energetic supply was 520 Kcal/100g; so, the ingest of two displays covers between 25-30% of recommended intake for the most frequently practiced sports. The shelf life studies of the product stored in ambiental conditions (20-25 degrees C and 55-60% RH) showed that the product without additives maintained its good quality up to 60 days. The product plus preservative as well as plus antioxidant stays without quality modifications up to at least 120 days, neither rancid odor no rancid flavor was detected. So, we conclude that it is nor necessary to add any antioxidant. The double sheet polypropilene package film showed very good characteristics in protecting the quality of the product.

Antioxidants↗
PubMed1992

[Functional evaluation of a nutritional energy supplement in athletes].

A nutritional caloric supplement as bar in 5 different flavours was evaluated in 9 sportsmen that ate daily 1040 Kcal/100 g extra during 8 weeks. Anthropometric measurements were used for weight, body fat, lean body mass and functional test for VO2 max, anaerobic threshold (AnT) and anaerobic power (AnP). Both tolerance and acceptability were evaluated too. Other similar sportsmen group was employed as control. Positives answers were registered in VO2 max (8.74%) and AnP (p < or = .04), meanwhile the rest of parameters remained without alterations, the same of control group. Test TAT evidence a high preference and a tolerance without deleterious effect. In conclusion, the product evaluated is an excellent ergogenic aid in effort with elevated energetic demand.

Adult↗
PubMed1991

Prevalence of antibody to hepatitis C virus in prospectively followed acute non-A, non-B hepatitis, from different epidemiological categories.

We have studied the prevalence of antibody against hepatitis C virus (anti-HCV) and its relation to the time of onset of the symptoms in 57 patients with acute non-A, non-B hepatitis: 16 post-transfusion, 25 drug addicts and 16 sporadic cases. In the 1st month after the onset of illness, anti-HCV was positive in 25% of patients with post-transfusion hepatitis, 44% of drug addicts and 25% of sporadic hepatitis. In the 3rd month this antibody was detected in 75%, 88% and 31.2%, and in the 6th month in 87.5%, 96% and 31.2%, respectively. The prevalence in the 3rd and 6th months was significantly higher in post-transfusion patients and drug addicts than in sporadic cases. In the 6th month the prevalence of anti-HCV in patients who progressed towards chronicity was also significantly higher than in those with acute resolving non-A, non-B hepatitis (94% vs 50%, p less than 0.001). These results show that HCV is probably the main agent in acute post-transfusion non-A, non-B hepatitis and in those occurring in drug addicts, and that in a high proportion of these patients the anti-HCV can be detected in the 3rd month after the beginning of the symptoms. On the other hand, the relation of hepatitis C virus with sporadic acute non-A, non-B hepatitis may be doubtful.

Acute Disease↗
PubMed1991

[Changes in the number of and indications for laparoscopy at a general hospital from 1979 to 1989].

Laparoscopic examinations done during 1979-1989 have been reviewed. From 214 examinations done during the first year of the review, the number of laparoscopies has been steadily declining to 7 examinations in 1989. Indications have also changed during this decade. Laparoscopy does not any more belong to the first choice examinations for diagnosis. Its usefulness is restricted to highly selected individual cases.

Adolescent↗
PubMed1990

[Vipoma of the pancreas. Apropos of a case and review of the literature].

Pancreatic endocrine tumors are uncommon; of this type of tumors, the Verner-Morrison's syndrome, WDHA or vipoma is diagnosed very rarely. The present paper is a report of a pancreatic vipoma in a 60 year-old female; she presented with watery diarrhea, facial flushing, hypokalemia, hypochlorhydria, metabolic acidosis and reversible renal failure; these are the usual manifestations of the syndrome. The diagnosis was made on the basis of radiological imaging, CAT and arteriography as well as the finding or elevated levels of vasoactive intestinal peptide (VIP). The surgical resection of the tumor was followed by the remission of the symptoms and normalization of the plasmatic levels of VIP. It is necessary to recognize this type of tumors because the only way to achieve a curative surgical resection is after an early diagnosis.

Adenoma, Islet Cell↗