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E Marín-López

Publications and source records attributed to E Marín-López.

15 recordsLinked to original sources
PubMed1995

A modified spectrophotometric assay for porphobilinogen deaminase: its application in the detection of both carriers and patients with acute intermittent porphyria.

A spectrophotometric method for porphobilinogen deaminase assay in erythrocytes is described. This test is determinant for the definite diagnosis of acute intermittent porphyria. In the method described, delta-aminolevulinic acid is used as substrate. Mercaptoethanol and zinc ions are introduced to maintain delta-aminolevulinic acid dehydratase in optimal conditions and to guarantee the in vitro production of porphobilinogen. An incubation temperature of 45 degrees C leads to the production of uroporphyrins, which are measured spectrophotometrically at 405 nm, giving reproducible results. The assay can be performed easily in any clinical laboratory and is valuable for detecting both patients and carriers of acute intermittent porphyria.

Acute Disease↗
PubMedDate not supplied

[Preliminary report on the effect of low doses of azidothymidine (AZT) in the treatment of patients with stage III infection by human immunodeficiency virus (HIV)].

Ten patients with CDC stage III of infection by HIV were treated with AZT at doses of 300 mg/day (100 mg tid). There were 5 males and 5 females, the median age being 40.5 yr' (range 26-46). Seventy percent of them had transfusion-associated HIV infection and the rest had been infected by the sexual route. A positive clinical response was observed in 100% of the group after 16-24 weeks of treatment: the Karnofsky performance status increased from 64% to 94% (p less than 0.01), the white blood cell count raised from 3.7 to 6.0 K/microL (p less than 0.01), the number of helper lymphocytes (CD4+) also raised significantly from 248.2 to 470.7/uL (p less than .01). Only two patients required red blood cells transfusions. The life expectancy at 82 weeks was 90%. Toxicity was both moderate and transitory. It is concluded that low doses of AZT (300 mg/day) produce similar clinical results as doses of 1200-1500 mg/day. A larger study is needed to support our preliminary findings.

AIDS-Related Complex↗
PubMedDate not supplied

[Nutrition of patients with liver diseases. (lst of 2 parts)].

Diet may be modified and can alter the hepatic function or contributes to maintain it on excellent state. The objective of this paper was to review the recently advances on the clinical aspects of nutrition in chronic liver diseases and the underlying rationale for specific nutritional therapies focusing in the works in Mexico. Original papers in english and spanish informed on Medline until 1994 were included. We also review the national literature about nutrition aspects on liver diseases.

Chronic Disease↗
PubMedDate not supplied

[Liver function tests].

The liver function tests are basic tools in the assessment of liver disease, they supply information about severity, progression of the illness and help to discriminate among treatment options. They are divided into two sections: biochemical test of liver function per se and serum markers of hepatobiliary disease. Although there are no new tests, liver transplant programs have stimulated development of metabolic capacity measurements to estimate liver function. At present the liver function tests, still are the best method to assess patients with liver diseases.

Biomarkers↗
PubMedDate not supplied

[Primary biliary cirrhosis: clinical features and survival of a Mexican population].

BACKGROUND: PBC progresses to cirrhosis and results in death due to liver failure or bleeding portal hypertension. Data of the clinical characteristics and survival of PBC patients allows the assessment of therapeutical alternatives as well as the establishment of inclusion criteria for liver transplantation. AIMS: One hundred and twenty patients with histological diagnosis of PBC, admitted from 1972 to 1992, were selected with the purpose of studying the clinical and biochemical characteristics and survival. METHODS: Patients who underwent liver transplant or those who had an incomplete follow-up were excluded. RESULTS: Therefore only 80 patients were included: these were seventy five women and five men, with mean age 46 +/- 11 years (X +/- SD) to whom demographic data, biochemical analysis, liver function (Child-Pugh) and liver damage (Ludwig) were recorded at the time of histological diagnosis, which was considered zero for calculating the survival (Kaplan Meier). The most common symptoms at diagnosis were pruritus in 63 patients, jaundice in 48, asthenia and adynamia in 55 patients. Eight cases were asymptomatic. According to Child-Pugh's classification, patients were grouped as follows: forty in stage A, 29 in B, and three in C; and according to liver damage (Ludwig), 8 in grade I, 28 in grade II, 22 in grade III and 14 in grade IV. The most frequent clinical associations were Sjögren's syndrome, in 30% of patients, although one case was associated to progressive muscular dystrophy and another one to multiple myeloma and hypothyroidism; in 58.7% of the cases, antimitochondrial antibodies were negative. One year survival was 75%, five years 44%, and seven years 13%. CONCLUSIONS: The most important characteristics of the studied patients were elevated percentage of negative antimitochondrial antibodies and short survival. it is important to impel the development of liver transplantation as the only mean to improve survival.

Adult↗