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Biomedical subjects

O Torres

Publications and source records attributed to O Torres.

29 records · Page 2Linked to original sources
PubMed1989

Estimation of the daily intake of cadmium which may be consumed by students 12-17 years old in secondary schools in the city of Havana.

In the present article we offer information regarding the estimated amounts of cadmium which may be consumed by 12,000 students 12 to 17 years old, who attend boarding secondary schools. The method of analysis used to determine cadmium is that reported by the Association of Official Analytical Chemists using atomic absorption spectrometry with air-acetylene flame. The estimated quantities of cadmium which these students may consume according to the offered foods are smaller than those recommended as provisional tolerable weekly intake by the Joint FAO/WHO Expert Committee on Food Additives.

Adolescent↗
PubMed1987

Estimation of the daily intake of nitrates and nitrites which may be consumed by students 12-17 years old in secondary schools in the city of Havana.

In the present article we offer informations regarding the estimated amounts of nitrates and nitrites which may be consumed by 12,000 students 12 to 17 years old, who attend boarding schools. The method of analysis used to determine nitrates and nitrites is that reported by the Joint FAO/WHO Expert Committee using a cadmium reducing column. The estimated quantities of nitrates and nitrites which these students may consume according to their food intake are smaller than those recommended as admissible daily intake by the Joint FAO/WHO Expert Committee on Food Additives.

Adolescent↗
PubMed1985

Alpha 1-antitrypsin deficiency and liver cirrhosis in adults.

Although cirrhosis of the liver caused by alpha 1-antitrypsin deficiency is not uncommon in children, only a few cases have been described in adults. We have seen three such patients--one man and two women, ranging in age from 57 to 66 years. These cases show the wide spectrum of this genetically influenced disease.

Adult↗
PubMed1984

Gastric lipomas--an update of clinical presentation, diagnosis, and treatment.

Although gastric lipomas, an extremely rare tumor, were once found mostly during autopsy studies and laparotomy for upper intestinal hemorrhages and obstruction, we are now able to diagnose these masses with CT scanners and gastrointestinal endoscopy. Surgery is now necessary only under certain circumstances. We present two cases of gastric lipomas with different clinical presentations, both diagnosed preoperatively.

Aged↗
PubMedDate not supplied

Alpha-thalassemia in a selected population of Mexico.

OBJECTIVE: To identify by molecular biology the alleles of alpha-Thal in selected hospital populations. METHODS: Eighteen propositi with hematological and biochemical data suggestive of alpha-thalassemia, selected from 356 patients of four hospitals in two cities with probable hemoglobinopathy were investigated for six common alpha-Thal alleles. Molecular studies were done by PCR and digestion with specific restriction enzymes. RESULTS: The alpha 3.7 allele was identified in two cases and the family study revealed the same allele in the mother; HbS heterozigocity was also detected in one of them. An analysis with Apa I demonstrated a class I deletion in both patients. The present study showed 2/356 (0.6%) of alpha 3.71 carriers which is a low frequency as compared with other countries. As no other common alpha-thalassemia alleles were found, we suspect that alpha-Thal in Mexico is as heterogeneous at a molecular level as beta-Thal.

Child↗