Maria Alexandra Garcia Amado



Associated Researcher of the Instituto Venezolano de Investigaciones Científicas (IVIC), Venezuela. PhD in Biological Science from Universidad Simon Bolivar, Venezuela. Professor of molecular biology in the Biochemistry post grade.


Area of Interest

My scientific interests are to understand the interactions of the bacterial community (resident and pathogens) of animals and the role of water and aquatic environments in transmission of bacteria.

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1. Pérez Chinchilla, L. A. and M. A. García. 1996. Las aves de Venezuela. Venezuela96. Ministerio de Relaciones Exteriores. N°15: 42-46.
2. Jones, R. J., M. A. García Amado and M. G. Domínguez-Bello. 2000. Comparison of the digestive ability of crop fluid from the folivorous Hoatzin (Opisthocomus hoazin) and cow rumen fluid with seven tropical forages. Animal Feed Science and Technology. 87:287-296.
3. García, M. A., P. Gueneau, F. Michelangeli and M. G. Domínguez Bello. 2003. Rate of detoxification of Quillaja saponins by crop bacteria from Opisthocomus hoazin is increased in the presence of methanogenic bacteria. Tropical and Subtropical Agroecosystems 3: 595-598.
4. Pacheco Delgado, M. A, M. A. García, C. Bosque and M. G. Domínguez Bello. 2003. Bacteria colonizing the crop of the green-rumped parrotlets Forpus passerinus. Tropical and Subtropical Agroecosystems 3: 591-593.
5. Lentino, M., E. Bonaccorso, M. A. García, E. A. Fernandez, R. Rivero and C. Portas. 2003. Longevity records of wild birds in the Henri Pittier National Park, Venezuela. Ornitologia Neotropical 14:545-548
6. Bosque, C., M. A Pacheco and M A. García-Amado. 2004. The annual cycle of Columbina group-doves in seasonal savannas of Venezuela. J. Field Ornithology. 75(1): 1-17
7. Pacheco, M. A., M. A. García Amado, C. Bosque and M. G. Domínguez-Bello. 2004. Bacteria in the crop of the seed-eating Green-rumped Parrotlet. Condor. 106: 139-143.
8. García-Amado, M. A., J. R. del Castillo, M. E. Perez and M. G. Dominguez-Bello. 2005. Intestinal D-Glucose and L-Alanine transport in japanese quail (Coturnix coturnix). Poultry sci. 84(6): 947-950.
9. Contreras, M., M. A. García Amado, M. J. Rodriguez, P. Borges Landáez, Y. Zambrano, M. Alvarez, R. Mosquera, Y. Arias, and P. Gueneau. 2006. Sensibilidad de un test inmunocromatográfico rápido para detección de H. pylori en Heces (HPSA, Meridian Bioscience) en Venezuela. Interciencia. Vol 31 (2):136-139.
10. Garcia Amado, M. A., M. Contreras, S. Cedeño Briceño, W. Abu Al Soud, T. Wadstrom and P. Gueneau. 2006. Presencia de un possible Nuevo patógeno gástrico, Candidatus Wolinella africanus, en un paciente Venezolano. Gen 60 (3):2005-206.
11. Fernández-Delgado, M., M. Contreras, P. Gueneau, P. Suárez, and M. A. García Amado*. 2007. Use of HP selective medium to detect Helicobacter pylori associated with other enteric bacteria in seawater and marine mollusks. Letters in Applied Microbiology, 45 (2), 213–218.
12. Fernández-Delgado, M., M. Contreras, M. A. García Amado, P. Gueneau, and P. Suárez. 2007. Occurrence of Proteus mirabilis associated with two species of Venezuelan oysters. Rev Inst Med Trop Sao Paulo 49(6):355-359.
13. García-Amado, M. A., W. Abu Al-Soud, P. Borges-Landaéz, M. Contreras, S. Cedeño, E. Baéz-Ramírez, M. G. Domínguez-Bello, T. Wadström and P. Gueneau. 2007. Non-pylori Helicobacteraceae in the upper digestive tract of asymptomatic Venezuelan subjects: detection of Helicobacter cetorum-like and Candidatus Wolinella africanus-like DNA. Helicobacter 12 (5), 553–558.
14. Contreras, M., A. Morales, M. A. García-Amado, M. De Vera, V. Bermúdez and P. Gueneau. 2007. Detection of Helicobacter-like DNA in the gastric mucosa of Thoroughbred horses. Letters in Applied Microbiology 45 (5): 553-557.
15. Domínguez-Bello, M. G., R. E. Aguiar, M. A. García-Amado and F. Michelangeli. 2007. Consumption of toxic plants by the hoatzin. J. Anim. Feed Sci. 16 suppl. 2: 302-306.
16. García-Amado, M. A., F. Michelangeli, P. Gueneau, M. E. Perez and M. G. Domínguez-Bello. 2007. Bacterial detoxification of saponins in the crop of the avian foregut fermenter Opisthocomus hoazin. J. Anim. Feed Sci. 16 suppl. 2: 82-85.
17. Rodríguez-Ferraro, A., M. A. García-Amado and Carlos Bosque. 2007. Diet, Food Preferences, and Digestive Efficiency of the Grayish Saltator, a Partly Folivorous Passerine. Condor 109: 824-840.
18. Fernández-Delgado, M, M. Contreras, M. A. García-Amado, F. Michelangeli y P. Suárez. 2008. Evidencias de la Transmisión Acuática de Helicobacter pylori. Interciencia 33(6):412-417.
19. Godoy-Vitorino F, Ley RE, Gao Z, Pei Z, Ortiz-Zuazaga H, Pericchi LR, García-Amado MA, Michelangeli F, Blaser MJ, Gordon JI, Domínguez-Bello MG. 2008. The crop bacterial community of the hoatzin, a neotropical folivorous flying bird. Appl Environ Microbiol. 74: 5905-5912.
20. Fernández, M., M. A. García-Amado, M. Contreras, V: Edgcomb, J. Vitelli, P. Gueneau, P. Suárez. 2009. Vibrio cholerae non-O1, non-O139 associated with seawater and plankton from coastal marine areas of the Caribbean Sea. Int J Environ Health Res. 19:279-289.
21. Suárez, P., M. Contreras, M. Fernández-Delgado, V. Salazar, R. Peña, F. Michelangeli, M. A. García-Amado*. 2010. Detection of Helicobacter in the digestive tract of an Atlantic Spotted Dolphin (Stenella frontalis). Journal Wildlife Diseases. 46(2):622-623.
22. Godoy-Vitorino F., K. C. Goldfarb, E. L. Brodie, M. A.García-Amado, F. Michelangeli, M. G. Domínguez-Bello. 2010. Developmental Microbial Ecology of the Crop of the Folivorous Hoatzin. The ISME journal 4:611-620.
23. García-Amado, M. A*., Bozo-Hurtado, L., Astor, Y., Suarez, P., Chistoserdov, A. 2011. Denaturing gradient gel electrophoresis analyses of the vertical distribution and diversity of Vibrio spp. populations in sea waters of Cariaco Basin. FEMS Microbial Ecology. 77:347-356.
24. Polanco, R., V. Salazar, N. Reyes, M. A. García-Amado, F. Michelangeli, M. Contreras. 2011. High prevalence of dna from non-H. pylori helicobacters in the gastric mucosa of venezuelan pet dogs and its histological alterations. Rev. Inst. Med. trop. S. Paulo. 53 (4): 207-211.
25. Godoy-Vitorino F, Goldfarb KC, Karaoz U, Leal S, García-Amado MA, Hugenholtz P, Tringe SG, Brodie EL, Dominguez-Bello MG. 2011. Comparative analyses of foregut and hindgut bacterial communities in hoatzins and cows. ISME J 6(3):531-41.