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Influence of Orally Administered Antibiotics on Faecal pH and Volatile Fatty Acid Concentrations on Infants and Young Children

Artículo científico
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Date
1990
Author
Marsh, W. W.
Hentges, D. J.
Chavarría Milanés, José Fernando
Thal, W. R.
Adams, M. K.
Achí Araya, María Rosario
Mata Jiménez, Leonardo
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Abstract
Faecal specimens were collected from infants and children with common infections who presented to the Paediatrics Outpatient Department of the National Children's Hospital, San Jose, Costa Rica or to the Paediatrics Clinic, Texas Tech University Health Sciences Center, Lubbock, Texas. Specimens were obtained before administration of various antibiotics, 7 d after therapy was begun and 28 d after completion of treatment. The antibiotics prescribed were either amoxicillin, ampicillirt, cephalexin, choramphenicol, dicloxocillin, erythromycin, penicillin or trimethroprim/ sulphamethoxazole. Faecal concentrations of total and individual volatile fatty acids (VFA) and faecal pH levels were determined and compared before, during and after treatment with the various antibiotics. Specimens, collected during the same time periods from a group of healthy infants and children who were not taking antibiotics, were evaluated to determine if normal fluctuations occurred between samplings. There were no significant differences in the Texas subjects in total VFA concentrations and pH levels between the patients receiving antibiotics and healthy participants who did not. With the exception of erythromycin administered to Costa Rican patients, therapeutic doses of the antibiotics did not significantly alter total VFA concentrations or pH levels of the faeces. Variations in concentrations of individual VFAs as a consequence of treatment were demonstrated only in Costa Rican patients teceiving either erythromycin or cephalexin; however, the patterns of change were similar to those observed in untreated control participants from Texas and were therefore not attibuted to antibiotic administration. These results are in accordance with our previous studies which show that absorbable antibiotics, administered to mice in therapeutic doses, do not significantly alter total VFA concentrations or pH levels of caecal contents and do not increase the susceptibility of the animals to oral challenge with enteric pathogens.' We speculate that the use of absorbable antibiotics does not compromise natural resistance against infections of the intestinal tract of humans.
URI
http://hdl.handle.net/10669/15180
http://www.microbecolhealthdis.net/index.php/mehd/article/view/7491/8835
Artículo científico -- Universidad de Costa Rica, Instituto de Investigaciones en Salud. 1990
 
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  • Repositorios universitarios

  • Repositorio del SIBDI-UCR
  • Biblioteca Digital del CIICLA
  • Repositorio Documental Rafael Obregón Loría (CIHAC)
  • Biblioteca Digital Carlos Melendez (CIHAC)
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  • Scientific Electronic Library Online (SciELO)
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Repositorio Institucional de la Universidad de Costa Rica. Algunos derechos reservados. Este repositorio funciona con DSpace.
Universidad de Costa Rica