Universidad Peruana Cayetano Heredia

Listar por tema "isolation and purification"

Listar por tema "isolation and purification"

Ordenar por:Orden:Resultados:

  • Antimicrobial activity of selected Peruvian medicinal plants 
    Rojas, Rosario; Bustamante Rufino, Ana Beatriz; Bauer Cuya, José Luis; Fernández, Irma; Albán, J.; Lock, Olga (Elsevier, 2003)
    The antimicrobial activity of 36 ethanol extracts from 24 plants, all of them currently used in the Peruvian traditional medicine for the treatment of several infectious and inflammatory disorders, was tested by means of ...
  • Capillaria hepatica pseudoinfection 
    Cabada, Miguel M.; Lopez, Martha; White Jr., A.Clinton (American Society of Tropical Medicine and Hygiene, 2013)
    A 54-year-old male Matsigenka native from the Manu jungle of Peru presented with the eggs shown in Figure 1. Kato Katz (Figure 2) testing revealed 1,500 eggs/g stool. The white blood cell count with differential, liver ...
  • Characterization of a novel cathepsin L-like protease from Taenia solium metacestodes for the immunodiagnosis of porcine cysticercosis 
    Leon-Janampa, Nancy; Liendo, Ruddy; Gilman, Robert Hugh; Padilla, Carlos; García Lescano, Héctor Hugo; Gonzales, Armando; Sheen Cortavarria, Patricia; Pajuelo Travezaño, Monica Jhenny; Zimic-Peralta, Mirko Juan; Cysticercosis Working Group in Peru (Elsevier, 2019)
    Porcine cysticercosis is an endemic parasitic disease caused by infection with Taenia solium that is found predominantly in developing countries. In order to aid in the development of simple diagnostic approaches, ...
  • Correlation of serotype-specific dengue virus infection with clinical manifestations 
    Halsey, E.S.; Marks, M.A.; Gotuzzo Herencia, José Eduardo; Fiestas, V.; Suarez, L.; Vargas, J.; Aguayo, N.; Madrid, C.; Vimos, C.; Kochel, T.J.; Laguna-Torres, V.A. (Public Library of Science, 2012)
    Background: Disease caused by the dengue virus (DENV) is a significant cause of morbidity throughout the world. Although prior research has focused on the association of specific DENV serotypes (DENV-1, DENV-2, DENV-3, and ...
  • Description of Bartonella ancashensis sp. nov., isolated from the blood of two patients with verruga peruana 
    Mullins, K.E.; Hang, J.; Jiang, J.; Leguia, M.; Kasper, M.R.; Ventosilla, P.; Maguiña Vargas, Ciro; Jarman, R.G.; Blazes, D.; Richards, A.L. (Microbiology Society, 2015)
    Three novel isolates of the genus Bartonella were recovered from the blood of two patients enrolled in a clinical trial for the treatment of chronic stage Bartonella bacilliformis infection (verruga peruana) in Caraz, ...
  • Detection and genogrouping of noroviruses from children's stools by Taqman One-step RT-PCR. 
    Apaza, S.; Espetia, S.; Gilman, Robert Hugh; Montenegro, S.; Pineda, S.; Herhold, F.; Pomari, R.; Kosek, M.; Vu, N.; Saito, M. (MyJove Corporation, 2012)
    Noroviruses (NoVs) are the leading cause of outbreaks of sporadic acute gastroenteritis worldwide in humans of all ages. They are important cause of hospitalizations in children with a public health impact similar to that ...
  • Development of a novel protocol based on blood clot to improve the sensitivity of qPCR detection of toxoplasma gondii in peripheral blood specimens 
    Gutierrez Loli, Renzo Marcelo; Ferradas, C.; Diestra, A.; Traianou, A.; Bowman, N.; Bok, J.; Reimer-McAtee, M.; Ramal, C.; Ticona, E.; Steinberg, H.; Mayta, H.; Calderón Sánchez, Maritza Mercedes; Calla Choque, Jaeson Santos; Sterling, C.; Gilman, Robert Hugh; Pinedo, L.C.; Valencia, G.; Sanchez, L.; Málaga, E.; Zhu, D.; Jiménez, J.; Bern, C.; Angulo, N.; Schiaffino Salazar, Francesca; Acosta, J.; Holtz, M.; Clark, D.; Clark, T.; Trompeter, G.; Choi, J.; Gandarilla, O.; Dorn, M.; Fortuny, E.; Galdos, G.; Colanzi, R. (American Society of Tropical Medicine and Hygiene, 2019)
    Quantitative polymerase chain reaction (qPCR) for Toxoplasma gondii multicopy genes has emerged as a promising strategy for sensitive detection of parasite DNA. qPCR can be performed from blood samples, which are minimally ...
  • Evaluating Urban Taeniasis as a Threat to Cysticercosis Elimination in Northern Peru 
    Fernandez, Lauralee; Gamboa Morán, Ricardo; Vilchez Barreto, Percy Mcquen; Pray, Ian; Beam, Michelle; Garvey, Brian; Spencer, Angela; Atto, Ruth; Muro Ecca, Claudio Alberto; Moyano, Luz Maria; García Lescano, Héctor Hugo; O'Neal, Seth E.; Cysticercosis Working Group in Peru (American Society of Tropical Medicine and Hygiene, 2019)
    Reintroduction of Taenia solium into a region in Peru where it had been eliminated prompted evaluation of the possibility of reintroduction from an urban reservoir of taeniasis. In a cross-sectional study of an adjacent ...
  • Evaluation of bleach-sedimentation for sterilising and concentrating Mycobacterium tuberculosis in sputum specimens 
    Chew, R.; Calderón, C.; Schumacher, S.G.; Sherman, J.M.; Caviedes, L.; Fuentes, P.; Coronel, J.; Valencia, T.; Hererra, B.; Zimic-Peralta, Mirko Juan; Huaroto, L.; Sabogal, I.; Escombe, A.R.; Gilman, Robert Hugh; Evans, Carlton Anthony William (BioMed Central, 2011)
    Background: Bleach-sedimentation may improve microscopy for diagnosing tuberculosis by sterilising sputum and concentrating Mycobacterium tuberculosis. We studied gravity bleach-sedimentation effects on safety, sensitivity, ...
  • First Detected Helicobacter pylori Infection in Infancy Modifies the Association Between Diarrheal Disease and Childhood Growth in Peru 
    Jaganath, Devan; Saito, Mayuko; Gilman, Robert Hugh; Queiroz, Dulciene M.M.; Rocha, Gifone A.; Cama, Vitaliano; Cabrera, Lilia; Kelleher, Dermot; Windle, HenryJ.; Crabtree, Jean E.; Checkley, William (Wiley, 2014)
    Background: In endemic settings, Helicobacter pylori infection can occur shortly after birth and may be associated with a reduction in childhood growth. Materials and Methods: This study investigated what factors promote ...
  • A foodborne outbreak of brucellosis at a police station cafeteria, Lima, Peru 
    Román, Karina; Castillo, Rosa; Gilman, Robert Hugh; Calderón Sánchez, Maritza Mercedes; Vivar, Aldo; Céspedes, Manuel; Smits, Henk L.; Meléndez, Paolo; Gotuzzo Herencia, José Eduardo; Guerra, Humberto; Maves, Ryan C.; Matthias, Michael A.; Vinetz, Joseph Michael; Saito, Mayuko (American Society of Tropical Medicine and Hygiene, 2013)
    Brucella melitensis is highly infectious for humans and can be transmitted to humans in a number of epidemiological contexts. Within the context of an ongoing brucellosis surveillance project, an outbreak at a Peruvian ...
  • Hindgut microbiota in laboratory-reared and wild Triatoma infestans 
    Waltmann, Andreea; Willcox, Alexandra C.; Balasubramanian, Sujata; Borrini Mayori, Katty; Mendoza Guerrero, Sandra; Salazar Sánchez, Renzo Sadath; Roach, Jeffrey; Condori Pino, Carlos; Gilman, Robert Hugh; Bern, Caryn; Juliano, Jonathan J.; Levy, Michael Z.; Meshnick, Steven R.; Bowman, Natalie M. (Public Library of Science, 2019)
    Triatomine vectors transmit Trypanosoma cruzi, the etiological agent of Chagas disease in humans. Transmission to humans typically occurs when contaminated triatomine feces come in contact with the bite site or mucosal ...
  • Human and canine echinococcosis infection in informal, unlicensed abattoirs in Lima, Peru 
    Reyes, M.M.; Taramona, C.P.; Saire-Mendoza, M.; Gavidia, C.M.; Barron, E.; Boufana, B.; Craig, P.S.; Tello, L.; García Lescano, Héctor Hugo; Santivañez, S.J. (Public Library of Science, 2012)
    Echinococcus granulosus infections are a major public health problem in livestock-raising regions around the world. The life cycle of this tapeworm is sustained between dogs (definitive host, canine echinococcosis), and ...
  • Images in clinical tropical medicine: Bacillary angiomatosis 
    Mejía Cordero, Fernando Alonso; Seas Ramos, Carlos Rafael (American Society of Tropical Medicine and Hygiene, 2014)
    A 29-year-old man presented with generalized, painless, erythematous lesions and fever. The patient had recently been diagnosed with human immunodeficiency virus (HIV) infection. His CD4 T-cell count at presentation was ...
  • Improved DNA extraction technique from clot for the diagnosis of Chagas disease 
    Mayta, Holger; Romero, Yomara K.; Pando, Alejandra; Verastegui Pimentel, Manuela Renee; Tinajeros, Freddy; Bozo, Ricardo; Henderson-Frost, Josephine; Colanzi, Rony; Flores, Jorge; Lerner, Richard; Bern, Caryn; Gilman, Robert Hugh (Public Library of Science, 2019)
    BACKGROUND: The detection of Trypanosoma cruzi genetic material in clinical samples is considered an important diagnostic tool for Chagas disease. We have previously demonstrated that PCR using clot samples yields greater ...
  • In response: Multifactorial basis of epilepsy in patients with neurocysticercosis 
    Nash, T.E.; Mahanty, S.; Loeb, J.A.; Theodore, W.H.; Friedman, A.; Sander, J.W.; Singh, G.; Cavalheiro, E.; Del Brutto, O.H.; Takayanagui, O.M.; Fleury, A.; Verastegui Pimentel, Manuela Renee; Preux, P.-M.; Montano, S.; Pretell, E.J.; White, A.C.; Gonzales, A.E.; Gilman, Robert Hugh; García Lescano, Héctor Hugo (Wiley, 2015)
    To the Editors: Carpio and Romo have emphasized the limitations in our understanding of symptomatic seizures and the epileptogenic process that follows in some, but not all, patients with neurocysticercosis. Their letter ...
  • Is participation contagious? Evidence from a household vector control campaign in urban Peru 
    Buttenheim, A.M.; Paz-Soldan Parlette, Valerie Andrea; Barbu, C.; Skovira, C.; Caldern, J.Q.; Riveros, L.M.M.; Cornejo, J.O.; Small, D.S.; Bicchieri, C.; Naquira Velarde, Cesar Gabriel; Levy, M.Z. (BMJ Publishing Group, 2013)
    Objectives: High rates of household participation are critical to the success of door-to-door vector control campaigns. We used the Health Belief Model to assess determinants of participation, including neighbour participation ...
  • Isolation and molecular characterization of Acanthamoeba and Balamuthia mandrillaris from combination shower units in Costa Rica 
    Retana-Moreira, Lissette; Abrahams-Sandí, Elizabeth; Cabello Vílchez, Alfonso Martín; Reyes-Batlle, María; Valladares, Basilio; Martínez-Carretero, Enrique; Piñero, José E.; Lorenzo-Morales, Jacob (Springer Verlag, 2014)
    Free living amoebae (FLA) are ubiquitous protozoa, which may behave as parasites under certain conditions. Four genera are recognized as causal agents of infections in humans and animals: Naegleria, Sappinia, Acanthamoeba ...
  • Lobomycosis successfully treated with posaconazole 
    Bustamante Rufino, Ana Beatriz; Seas Ramos, Carlos Rafael; Salomon, Martín; Bravo Puccio, Francisco Gerardo (American Society of Tropical Medicine and Hygiene, 2013)
    Lobomycosis is a chronic subcutaneous mycosis for which no standard treatment is available to date.We describe a patient in Peru with lobomycosis on the left earlobe that was successfully treated with posaconazolefor 27 ...
  • Malaria vector species in amazonian Peru co-occur in larval habitats but have distinct larval microbial communities 
    Prussing, Catharine; Saavedra Romero, Marlon Pierino; Bickersmith, Sara A.; Alava, Freddy; Guzman Guzman, Mitchel Anthony; Manrique, Edgar; Carrasco Escobar, Gabriel; Moreno, Marta; Gamboa Vilela, Dionicia Baziliza; Vinetz, Joseph Michael; Conn, Jan E. (Public Library of Science, 2019)
    In Amazonian Peru, the primary malaria vector, Nyssorhynchus darlingi (formerly Anopheles darlingi), is difficult to target using standard vector control methods because it mainly feeds and rests outdoors. Larval source ...

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