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2 results on '"Maria G. Caletti"'

1. Risk Factors for Sporadic Shiga Toxin–producing Escherichia coli Infections in Children, Argentina

Author

Marta Rivas, Sergio Sosa-Estani, Josefa Rangel, Maria G. Caletti, Patricia Vallés, Carlos D. Roldán, Laura Balbi, Maria C. Marsano de Mollar, Diego Amoedo, Elizabeth Miliwebsky, Isabel Chinen, Robert M. Hoekstra, Paul S. Mead, and Patricia M. Griffin

Subjects
Shiga toxin–producing Escherichia coli, E. coli O157, hemolytic uremic syndrome (HUS), case-control study, risk factors, human, Medicine, Infectious and parasitic diseases, RC109-216
Abstract

We evaluated risk factors for sporadic Shiga toxin–producing Escherichia coli (STEC) infection among children in Argentina. We conducted a prospective case–control study in 2 sites and enrolled 150 case-patients and 299 controls. The median age of case-patients was 1.8 years; 58% were girls. Serotype O157:H7 was the most commonly isolated STEC. Exposures associated with infection included eating undercooked beef, living in or visiting a place with farm animals, and contact with a child

Published
2008
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2. Hormonal profile in pubertal females with chronic renal failure: before and under haemodialysis and after renal transplantation

Author

Jorge R. Ferraris, Maria G. Caletti, Horacio M. Domené, José A. Ramirez, Marco A. Rivarola, and M E Escobar

Subjects
endocrine system, medicine.medical_specialty, Hypothalamo-Hypophyseal System, Adolescent, medicine.drug_class, Endocrinology, Diabetes and Metabolism, medicine.medical_treatment, Group A, Group B, chemistry.chemical_compound, Endocrinology, Renal Dialysis, Internal medicine, medicine, Humans, Child, Progesterone, Creatinine, Kidney, Estradiol, business.industry, Ovary, Puberty, General Medicine, Luteinizing Hormone, Kidney Transplantation, Prolactin, Transplantation, medicine.anatomical_structure, chemistry, Kidney Failure, Chronic, Female, Hemodialysis, Gonadotropin, Follicle Stimulating Hormone, business, Pituitary Hormone-Releasing Hormones, hormones, hormone substitutes, and hormone antagonists
Abstract

The effects of chronic renal failure on the hypothalamic-pituitary-ovarian axis in 25 girls, aged 9.1 to 20.9 years (mean 13.8) were studied. Twelve patients on conservative treatment (group A) had serum creatinine values between 176.8 and 1502.8 μmol/l; 9 patients were on haemodialysis (group B); and 12 patients had received a renal transplant (group C). Tanner stage of breast development was delayed relative to chronological age in 5 out of 18 patients. Serum oestradiol was normal or low when related to pubertal stages in all groups. Serum LH was elevated in group A and B patients, but normal in group C patients. Serum FSH was elevated in 6 out of the 21 patients in group A plus B, and in 2 out of the 12 patients in group C. Serum PRL was elevated in 12/12, 6/8, and 4/11 patients in group A, B, and C respectively. After GnRH administration to 4 patients in group A, 3 showed delayed or absent gonadotropin response; all 4 patients studied in group C showed normal gonadotropin response. The data indicate a decreased E2 secretion, abnormal gonadotropin and PRL levels and a blunted gonadotropin response to GnRH in girls with chronic renal failure. These results seem to indicate an alteration of the hypothalamic-pituitary unit that can be reversed after successful renal transplantation.

Published
1987

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