[Orbital hibernoma].
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Biomedical subjects
Publications and source records attributed to F Antillón.
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HLA typing was carried out in a group of twenty-four Spanish unrelated patients diagnosed with conventional high-grade osteosarcoma. All of them were typed for HLA-A and HLA-B antigens. A significant increase in the HLA-A11 (33.3 vs. 12%, chi 2 = 9.752, corrected p value = 0.016) and HLA-B7 (33.3 vs. 11.3%, chi 2 = 10.919, corrected p value = 0.011) was found in osteosarcoma patients compared with the control group. A trend towards an increased frequency in HLA-A24 and HLA-A28 antigens was also found.
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In the last 20 years Escherichia coli O157: H7 has emerged as a new pathogen, causing worldwide disease, death and economic loss. Different studies have revealed important survival characteristics of this pathogen, although there are divergent criteria about its ability to survive in various mayonnaise formulations. We studied the effect of different mayonnaise concentrations (0%, 18%, 37% and 56%) (weight/weight) over the survival of the bacterium in common foods from a neotropical environment (Costa Rica). High [10(7)-10(8) Colony Forming Units (CFU)/ml] and low E. coli populations (10(4)-10(6) CFU/ml) were inoculated, (three replicates) in meat, chopped cabbage and poultry, and mixed with commercial mayonnaise to obtain the concentrations specified. They were incubated at 12 degrees C for 24, 48 and 72 hr. The E. coli O157: H7 enumeration was done according to a standard methodology. Populations of E. coli O157: H7 showed an increasing trend during the first incubation period (48 hr), in all the preparations, regardless of the fat concentration used. Our data indicate that E. coli O157: H7 is capable of surviving and growing in meat, cabbage and poultry mixed with mayonnaise, independently of its concentration.
A late diagnosis of retinoblastoma is an unquestionable fact that allows its growth and leads to a deterioration in the outlook. It also gives way to the invasion of the choroidea by the retinal tumor. This event has been related by some authors to orbital recurrences or distant metastases. The evolution of intraocular retinoblastomas, with and without invasion to choroidea, is compared in this work. No significant differences were found in the thirty-three cases studied.
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