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Descriptive Histological Study and Detection of Serotonin (5-HT)-Associated Autofluorescence in the Neuro-Olfactory Epithelium of the Vampire Bat Desmodus rotundus  [PDF]
Aurora Angeles-Maldonado, Violeta Gómez, María Guadalupe Ramírez-Mu？oz, Rodrigo Salomón Hernández-Aco, José Luis Hernández-Guzmán, Juan Ocampo-López
Open Journal of Veterinary Medicine (OJVM) , 2026, DOI: 10.4236/ojvm.2026.169013
Abstract: This study characterized the histological organization of the neuro-olfactory epithelium of the common vampire bat, Desmodus rotundus, using hematoxylin and eosin (H&E), Gomori’s trichrome, and Holmes’ silver impregnation. In addition, an induced autofluorescence technique was employed to investigate the distribution of serotonin (5-hydroxytryptamine, 5-HT)-associated fluorescence within the neuro-olfactory epithelium. Histological analysis demonstrated that the neuro-olfactory epithelium is in the dorsocaudal region of the nasal cavity and consists of a pseudostratified sensory epithelium composed of sustentacular cells, basal cells, and bipolar olfactory receptor neurons. Holmes’ staining clearly identified unmyelinated nerve fibers associated with the olfactory nerve. Autofluorescence imaging obtained using two fluorescence filter sets revealed a yellow-to-orange colocalization signal indicative of serotonin (5-HT)-associated fluorescence within the neuro-olfactory epithelium and associated olfactory glands. These findings provide a detailed histological description of the neuro-olfactory epithelium of Desmodus rotundus and support the usefulness of induced autofluorescence as a complementary histological approach for detecting serotonin-associated fluorescence in formalin-fixed, paraffin-embedded tissues.
EL ALUMNADO UNIVERSITARIO CORDOBéS Y LA PLATAFORMA VIRTUAL MOODLE
Verónica Marín Díaz,Guadalupe Aurora Maldonado Berea
Pixel-Bit , 2011,
Abstract: La conjugación del binomio TIC-Educación Superior nos lleva a pensar en tres beneficios que tal matrimonio puede aportar a la práctica universitaria, por un lado la innovación, por otro la apertura del sistema al exterior y en último lugar la posibilidad de desarrollar comunidades virtuales de aprendizaje entre docentes universitarios. El artículo que aquí presentamos trae a la palestra el conocimiento que los estudiantes de nuevo ingreso de la Facultad de Ciencias de la Educación de la Universidad de Córdoba tienen sobre las plataformas de teleformación y más concretamente sobre la plataforma Moodle, dado que es la que se emplea en dicha institución universitaria.
Campylobacter fetus subespecie yeyuni en lactantes con síndrome diarreico agudo Campylobacter fetus subespecimen jejum in infants with acute diarrheic syndrome
Gastón Duftau T,Rosanna Lagos Z,Julio García M,Aurora Maldonado B
Revista chilena de pediatría , 1982,
Abstract:
Evaluación retrospectiva de la vigilancia de Streptococcus pneumoniae causante de enfermedades invasoras en adultos de la Región Metropolitana-Chile: 2000-2006 Retrospective assessment of laboratory surveillance for invasive Streptococcus pneumoniae isolates from adults of the Metropolitan Region (Chile): 2000-2006
Aurora Maldonado B,Mabel Seoane M,Oriana San Martín B,Juan C Hormazábal O
Revista chilena de infectología , 2007,
Abstract: Este estudio evaluó el funcionamiento de la norma nacional de vigilancia de Streptococcus pneumoniae recuperado desde procesos invasores en adultos de la Región Metropolitana-Chile. Material y Métodos: Se revisaron las notificaciones correspondientes a pacientes de 15 a os o más, recibidas por el ISP en el período 2000-2006, emitidas por establecimientos asistenciales de la región. Paralelamente, se revisaron los resultados de cultivos de fluidos estériles practicados en 14 hospitales estatales que atienden adultos. Resultados: Se encontró documentación de 1.429 aislados de S. pneumoniae provenientes de procesos invasores en pacientes de 15 a os o más, incluyendo 1.095 notificados y 334 no notificados. La tasa de sub-notificación estimada para los 14 establecimientos visitados alcanzó a 33%. La edad y el diagnóstico fueron omitidos en 23 y 78% de las notificaciones, respectivamente. En 235 de 303 (78%) cepas aisladas de pacientes de 65 a os o más, investigadas mediante reacción de Quellung, se identificaron serotipos capsulares representados en la vacuna polisácarida 23-valente. Conclusiones: El Ministerio de Salud anunció un programa de inmunización con vacuna neumocóccica 23-valente dirigido a los adultos mayores. Con miras a la futura evaluación del impacto de esta medida, los resultados de esta revisión se alan la necesidad de reforzar el cumplimento y la calidad de las notificaciones de S. pneumoniae causante de enfermedades in-vasoras This study assessed the performance of the national norm for laboratory surveillance of invasive Streptococcus pneumoniae in adults of the Metropolitan Region (Chile). Material and Methods. We reviewed all notifications of isolates from patients > 15 years of age received by the Institute of Public Health of Chile during the period 2000-2006, submitted by health care facilities of the study region. We also reviewed the original records of sterile fluid cultures, in 14 public adult hospitals. Results. We found documentation of 1429 invasive S. pneumoniae isolates recovered from adult patients, including 1095 reported and 334 not-reported isolates. A 33% under-reporting rate was estimated for the 14 hospitals where local laboratory records were inspected. Age and clinical diagnosis were omitted in 23% and 78% of the notifications, respectively. Among 303 isolates from patients > 65 years of age that were investigated with Quellung reaction, 235 (78%) had capsular serotypes represented in the 23-valent polysacharide vaccine. Conclusions. The Ministry of Health of Chile announced implementation of 23-valent vaccine immun
Evaluación retrospectiva de la vigilancia de Streptococcus pneumoniae causante de enfermedades invasoras en adultos de la Región Metropolitana-Chile: 2000-2006
Maldonado B,Aurora; Seoane M,Mabel; San Martín B,Oriana; Hormazábal O,Juan C; Lagos Z,Rosanna;
Revista chilena de infectología , 2007, DOI: 10.4067/S0716-10182007000600003
Abstract: this study assessed the performance of the national norm for laboratory surveillance of invasive streptococcus pneumoniae in adults of the metropolitan region (chile). material and methods. we reviewed all notifications of isolates from patients > 15 years of age received by the institute of public health of chile during the period 2000-2006, submitted by health care facilities of the study region. we also reviewed the original records of sterile fluid cultures, in 14 public adult hospitals. results. we found documentation of 1429 invasive s. pneumoniae isolates recovered from adult patients, including 1095 reported and 334 not-reported isolates. a 33% under-reporting rate was estimated for the 14 hospitals where local laboratory records were inspected. age and clinical diagnosis were omitted in 23% and 78% of the notifications, respectively. among 303 isolates from patients > 65 years of age that were investigated with quellung reaction, 235 (78%) had capsular serotypes represented in the 23-valent polysacharide vaccine. conclusions. the ministry of health of chile announced implementation of 23-valent vaccine immunization program for the elderly. in the perspective of future evaluations of the impact of this intervention, the results of this study indicate the need of reinforcing adherence and improving the quality of notifications of invasive s. pneumoniae
Caracterización molecular en aislados chilenos de Streptococcus agalactiae
Rojo,Patricia; Araya,Pamela; Martínez T,M Angélica; Hormazábal,Juan Carlos; Maldonado,Aurora; Fernández,Jorge;
Revista médica de Chile , 2008, DOI: 10.4067/S0034-98872008000500009
Abstract: streptococcus agalactiae is the main causing organism of invasive infections such as sepsis and meningitis in the newborn. aim: to perform a genotype characterization of streptococcus agalactiae strains coming form invasive infections of newborns and colonized pregnant women. material and methods: a group of 58 strains not related epidemiologically isolated from colonized pregnant women and invasive infections in newborns, were studied. pulsed field electrophoresis (pfge) and polymerase chain reaction amplification of hylb and is 1548 genes, as possible virulence markers, were performed. results: among the studied strains, 37 genetic subtypes were observed. there were nine groups of identical pfge patterns. three corresponded to serotype la and six to serotype iii. an erythromycin and clindamycin resistant clone was identified in three colonized women and a newborn with sepsis, which were not epidemiologically related. the hylb gene was equally present in cases of neonatal meningitis or colonized pregnant women. conclusions: there was a great degree of polymorphism among the studied strains. the ample presence of hylb gene and the absence of the insertion element is1548 in the hylb gene in invasive and colonizing strains, indicates that both groups of strains are potentially pathogenic
Enfermedades de transmisión sexual: estado actual en el caso del virus de la Hepatitis B y C
Concepción García Luján,Aurora Martínez Romero,Jesús Vásquez Arroyo,Aurelio Maldonado Cabrera
Química Viva , 2008,
Abstract: Las enfermedades de transmisión sexual (ETS) son un problema de salud pública en el mundo, especialmente en los países en vías de desarrollo, debido a la infertilidad, discapacidad a corto plazo con consecuencias médicas y psicológicas para miles de hombres, mujeres y ni os. Las consecuencias de las ETS son dramáticas si se tiene en cuenta su contribución potencial a la transmisión del virus VIH. Para tomar un ejemplo de un país con buenas estadísticas: la incidencia de carcinoma hepatocelular (HCC) en los Estados Unidos se duplicó durante los últimos 20 a os y continúa incrementándose rápidamente. Las principales causas de esta enfermedad son las infecciones virales crónicas causadas por los virus de hepatitis B y C. Hay aproximadamente 3,5 millones de americanos infectados de manera crónica con el virus de la hepatitis C (HCV). La mayoría de estos individuos no han sido diagnosticados. Mientras que para el virus de la hepatitis B (HBV) se estima que 1,25 millones de personas están infectados de manera crónica. Con una alta proporción entre los inmigrantes de Asia, Africa del sub-Sahara, y zonas de centro y Sudamérica.
2,3-FUNCTIONALLY DIALKYL-1,4-BENZOHYDROQUINONE DIACETATE DERIVATIVES FROM CLEAVAGE OF EPOXIDES
MOLINARI,AURORA; OLIVA,ALFONSO; AGUILERA,NANET; MIGUEL DEL CORRAL,JOSE Ma; GORDALIZA,MARINA; CASTRO,Ma ANGELES; GARCIA-GRAVALOS,Ma DOLORES; SAN FELICIANO,ARTURO;
Boletín de la Sociedad Chilena de Química , 2001, DOI: 10.4067/S0366-16442001000100007
Abstract: several new 2,3-functionally dialkyl-1,4-benzohydroquinone diacetates have been prepared by oxidative cleavage of epoxide compounds iii, obtained from the diels-alder condensation product between the monoterpene myrcene and 1,4-benzoquinone. the nature of the isolated products is depending of the functionality of the side chain
Performance analysis of a wireless sensor network with cognitive radio capabilities in structural health monitoring applications: A discrete model
Eleazar Aguirre Anaya,Felipe A Cruz-Perez,Genaro Hernandez-Valdez,Hassel Aurora Alcalá Garrido,Mario E Rivero-Angeles,S Lirio Castellanos-Lopez
- , 2018, DOI: 10.1177/1550147718774001
Abstract: This article studies the performance of a wireless sensor network with cognitive radio capabilities to gather information about structural health monitoring of buildings in case of seismic activity. Since the use of the local area network is intensive in office and home environments, we propose the use of empty cellular channels (primary system). As such, the structural health monitoring does not degrade the local communications. Thus, the wireless sensor network for structural health monitoring acts as secondary network. Two discrete-time analytical approaches are proposed and developed to evaluate the system performance in terms of both the average packet delay and average energy consumption. The first one is an approximation suitable for the case when the time slot duration is small relative to the mean call inter-arrival time. The second model is accurate for any time slot duration and inter-arrival times
Re-Examining the Ibalong: An Indigenous Bikolano Epic or a Spanish Poem?  [PDF]
Maria Aurora Gratela Caballero
Advances in Literary Study (ALS) , 2024, DOI: 10.4236/als.2024.124029
Abstract: This paper critically investigated the origins and cultural roots of the Ibalong, a renowned Bikolano epic, questioning its classification as an indigenous narrative or a product of Spanish influence. Through a comprehensive review of related literature, the paper explored existing references about the Ibalong, shedding light on divergent perspectives. The study aimed to elucidate the blurred boundaries between indigenous and colonial influences on the epic’s narrative structure and content. Using a multidisciplinary methodology that combines literary discourse analysis with biographical inquiry, the results and analysis section dissected the elements of an epic as a literary form, as well as its linguistic nuances and thematic elements. Results showed the author reevaluated the Ibalong’s cultural identity, offering new insights that challenge prevailing interpretations and conclusions regarding its nature. Fray Bernardino de Melendreras, O.F.M. penned the Hispanic Ibalong epic, emphasizing the complex interplay between indigenous and colonial influences in literary traditions.
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