Biomedical subjects

H Suárez

Publications and source records attributed to H Suárez.

12 recordsLinked to original sources

PubMed1992

Prevalence of Entamoeba histolytica and other intestinal parasites in a community from Maracaibo, Venezuela.

The prevalences of Entamoeba histolytica and other intestinal parasites were assessed in a suburban community of Maracaibo, Venezuela, by examination of a stool specimen from each of 342 individuals, using iron-haematoxylin stained faecal smears and formalin-ether concentration. The overall parasitic infection rate was 80.4%, and 65.8% of the population had multiple infections. The overall amoebic infection rate, which was highest in female adults, averaged 39.7%. The E. histolytica infection rate was 8.7% and most of those infected were passing cysts. Entamoeba polecki was observed in two samples. Amongst the protozoa, Entamoeba coli was observed most frequently (24.8%) and Giardia lamblia was the predominant pathogen (13.0%). Trichuris trichiura (71.9%) and Ascaris lumbricoides (54%) were the most common parasites, particularly in school-children. The high rates of parasitic and multiple infections reflect the low socio-economic status of the community studied.

Adolescent↗

PubMed1992

Plastic properties of the vestibulo-ocular reflex in olivo-ponto-cerebellar atrophy.

Disorders in vestibulo-ocular functions were studied in 4 patients with olivo-ponto-cerebellar atrophy (OPCA). The phenomenon of habituation, considered as a plastic property of the vestibulo-ocular reflex (VOR), was explored with a behavioural paradigm in these patients. When subjected to the habituation paradigm all patients presented a modified response opposite to that observed in normal subjects. The role played by the cerebellum in relation to VOR plasticity--well known in different experimental models--is analyzed. The hypothesis of a modification of the cerebellum's inhibitory action on vestibular nuclei neurons is put forward to explain the inversion of the VOR habituation phenomenon in these patients.

Adult↗

PubMed1991

Serum ferritin deficiency in Huntington's disease patients.

This study was designed to investigate serum levels of iron, ferritin, vitamin B12 and folic acid in 18 Huntington's disease patients and 86 healthy control subjects. Serum iron, vitamin B12 and folic acid levels were normal. Ferritin concentrations were significantly diminished in the choreic patients. The importance of this finding in our attempt to understand the underlying biochemical defect and the chemical nature of the iron deposits found in several brain nuclei in Huntington's disease patients is unknown.

Adolescent↗

PubMed1989

Nutritional evaluation of Huntington disease patients.

A nutritional survey and evaluation was made in Huntington disease patients by the 24-h-recall method. Control subjects and choreic patients consumed a diet that supplied all the essential amino acids. The diet was hypocaloric, rich in animal protein, and low in fat and carbohydrates. The ratio of calcium to phosphorus in the groups studied was less than 1. High vitamin A and low vitamin C and niacin intakes were observed in Huntington disease patients. Only 17% of control subjects showed weight deficiency; 55% of the patients at stages III and IV of the disease were malnourished despite receiving the same food intake as controls. Although iron intake was deficient in all groups studied, it was enough to maintain normal serum levels of this metal. The deficiencies found in some nutrients do not explain the clinical manifestations observed in Huntington disease patients.

Adolescent↗

PubMed1983