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1.
Rev. Fac. Med. Hum ; 21(2): 346-353, Abr.-Jun. 2021.
Article in English, Spanish | LILACS-Express | LILACS | ID: biblio-1179291

ABSTRACT

Introducción: La cuarentena por COVID-19 ha afectado de gran manera a los estudiantes universitarios del Perú, generando una serie de efectos físicos, psicológicos y conductuales. Objetivo: Determinar los factores asociados a ansiedad, depresión, somatización y evitación experiencial en estudiantes universitarios del Perú en cuarentena por COVID-19. Métodos: Se realizó un estudio observacional transversal. La muestra estuvo constituida por 1264 estudiantes universitarios de diversos departamentos del Perú, se tomó como variables dependientes a la ansiedad, depresión, somatización y evitación experiencial, las cuales se evaluaron con el cuestionario de "El Inventario de comportamiento psicosocial desajustado, ante la presencia del COVID-19 en la población peruana" y el AAQ II, para el análisis estadístico se empleó el chi cuadrado. Resultados: Más de la mitad de los estudiantes universitarios del Perú, presenta entre 3 y 6 de los 6 indicadores de ansiedad, y este mismo número de indicadores de depresión lo presenta el 45% de la muestra. El 30 % de la muestra presenta entre 3 y 6 indicadores de somatización y el 40,3% de la muestra se ubica de la mitad hacia arriba en la escala de evitación experiencial. Conclusiones: Existen diferencias en los niveles de ansiedad, somatización y evitación experiencial entre varones y mujeres, asimismo se encontró que los estudiantes de mayor edad presentaban niveles más bajos de ansiedad, depresión y evitación experiencial, pero no en somatización.


Introduction: The COVID-19 quarantine has greatly affected university students in Peru, generating a series of physical, psychological and behavioral effects. Objective: To determine the factors associated with anxiety, depression, somatization and experiential avoidance in peruvian university students quarantined by COVID-19. Methods: A cross-sectional observational study was carried out. The sample was made up of 1264 university students from various departments of Peru, anxiety, depression, somatization and experiential avoidance were taken as dependent variables, which were evaluated with the questionnaire "The Inventory of unadjusted psychosocial behavior, in the presence of COVID-19 in the Peruvian population" and the AAQ II, for the statistical analysis the chi square was used Results: More than half of the university students in Peru present between 3 and 6 of the 6 anxiety indicators, and this same number of depression indicators is presented by 45% of the sample. 30% of the sample has between 3 and 6 indicators of somatization and 40.3% of the sample is located in the middle upwards on the experiential avoidance scale. Conclusions: There are differences in the levels of anxiety, somatization and experiential avoidance between men and women, it was also found that older students had lower levels of anxiety, depression and experiential avoidance, but not in somatization.

2.
Rev. peru. med. exp. salud publica ; 37(3): 462-470, jul-sep 2020. tab, graf
Article in Spanish | LILACS | ID: biblio-1145017

ABSTRACT

RESUMEN Objetivos: Evaluar la actividad fotodinámica in vitro de la ftalocianina de aluminio tetrasulfonada clorada (AlPcClS4) sobre promastigotes y amastigotes de Leishmania (Viannia) peruviana y Leishmania (Viannia) braziliensis. Materiales y métodos: La actividad del tratamiento fotodinámico empleando AlPcClS4 sobre promastigotes y amastigotes de Leishmania fue determinada mediante el método colorimétrico Metil Tiazol Tetrazolium (MTT) y PCR cuantitativo, respectivamente. Resultados: El tratamiento fotodinámico presentó un efecto inhibitorio sobre promastigotes, principalmente sobre Leishmania (V.) peruviana, en menor proporción sobre Leishmania (V.) braziliensis y sobre las formas intracelulares de ambas especies. En Leishmania (V.) peruviana, a las 24 horas posirradiación a 200 µM y 350 µM el efecto inhibitorio fue del 72,9% y 73,9%, respectivamente y a las 96 horas fue del 78,8% y 80,6%, respectivamente. En las formas intracelulares, empleando 200 µM y evaluado a las 72 horas postratamiento, se observó una inhibición del 57,8% de amastigotes de Leishmania (V.) peruviana. El IC50 fue del 56,5; 50; 44; y 39,7 µM, que corresponde a las 24, 48, 72 y 96 horas posirradiación, respectivamente. Conclusiones: El tratamiento fotodinámico empleando AlPcClS4 frente a las especies de Leishmania presentó resultados alentadores principalmente sobre Leishmania (V.) peruviana, lo cual sugiere su potencial uso como alternativa o complemento del tratamiento convencional de la leishmaniasis tegumentaria. Sin embargo, aún se requiere continuar con nuevos ensayos para determinar el índice de selectividad sobre el parásito en su forma intracelular, y desarrollar estrategias que faciliten el ingreso eficiente de la molécula hacia la célula hospedera y al parásito.


ABSTRACT Objectives: To evaluate the in vitro photodynamic activity of aluminum phthalocyanine tetrasulfonate chloride (AlPcClS4) on promastigotes and amastigotes of Leishmania (Viannia) peruviana and Leishmania (Viannia) braziliensis. Materials and methods: The activity of photodynamic therapy using AlPcClS4 on Leishmania promastigote and amastigotes was determined by the Methyl Thiazole Tetrazolium (MTT) colorimetric method and quantitative PCR, respectively. Results: Photodynamic treatment showed an inhibitory effect on promastigotes, particularly on Leishmania (V.) peruviana, to a lesser extent on Leishmania (V.) braziliensis and also on intracellular forms of both species. At 24 hours post-radiation, using concentrations of 200 μM and 350 μM, the inhibitory effect on Leishmania (V.) peruviana was 72.9% and 73.9% respectively; at 96 hours the inhibitory effect was of 78.8% and 80.6%, respectively. Regarding intracellular forms, the inhibitory effect on Leishmania (V.) peruviana amastigotes was 57.8% at 72 hours post-treatment, using a concentration of 200 μM. The IC50 was 56.5, 50, 44 and 39.7 μM, at 24, 48, 72 and 96 hours post-radiation, respectively. Conclusions: Photodynamic therapy using AlPcClS4 against Leishmania species showed encouraging results, mainly on Leishmania (V.) peruviana, suggesting a potential use as an alternative or complement to the usual treatment of tegumentary leishmaniasis. However, new trials are still required to determine the selectivity index for the intracellular form of the parasite, and to develop methods to facilitate the efficient entry of the molecule into the host cell and the parasite.


Subject(s)
Leishmania braziliensis , In Vitro Techniques , Leishmaniasis , Aluminum , Photochemotherapy , Tropical Medicine , Leishmaniasis, Cutaneous , Photosensitizing Agents
3.
Rev. peru. med. exp. salud publica ; 35(4): 590-598, oct.-dic. 2018. tab, graf
Article in Spanish | LILACS | ID: biblio-985787

ABSTRACT

RESUMEN Objetivos. Aislar, seleccionar e identificar actinomicetos asociados a hormigas cortadoras de hojas Atta cephalotes (Linnaeus, 1758), que presenten mayor actividad anti-Candida. Materiales y métodos. Estudio transversal realizado en hormigas recolectadas de una localidad de Huánuco, Perú, a partir de las cuales se aislaron cepas de actinomicetos que fueron evaluadas mediante pruebas in vitro para determinar su capacidad antagonista frente a especies de Candida. Los actinomicetos de mayor antagonismo fueron seleccionados y cultivados en agitación, luego se obtuvieron los metabolitos extracelulares con solventes orgánicos y finalmente se evaluaron los extractos crudos para determinar cuantitativamente la concentración mínima inhibitoria (CMI). Resultados. Se logró aislar 30 actinomicetos, de los cuales el 47 % presentaron actividad antagonista a Candida albicans (C. albicans) ATCC 7516, el 43 % a Candida parapsilosis ATCC 7307, el 37% a Candida tropicalis ATCC 7206 y C. albicans ATCC 10231 y el 30% a C. albicans ATCC 98028. Extractos orgánicos de las cepas HAA-16 y HAA-17 presentaron marcada actividad anti-Candida; siendo el extracto de acetato de etilo de la cepa HAA17 el de mejor rendimiento por tener mayor espectro de actividad y presentar una CMI de 3,25 mg/ml frente a C. albicans ATCC 7516 y Candida parapsilosis ATCC 7307. Los actinomicetos seleccionados se identificaron mediante técnicas moleculares como miembros del género Streptomyces. Conclusiones. Los actinomicetos asociados a Atta cephalotes son excelentes productores de compuestos bioactivos, capaces de inhibir el crecimiento de levaduras patógenas del género Candida y con potencial aplicación en el desarrollo de nuevos productos naturales de interés biomédico.


ABSTRACT Objectives. To isolate, select and identify actinomyces associated to leaf-cutting ants Atta cephalotes (Linnaeus, 1758), that present a greater anti-Candida activity. Materials and Methods. Cross-sectional study made with ants collected at a location in Huánuco, Peru, from which strands of actinomyces were isolated and later evaluated by in vitro testing in order to determine its antagonistic capacity against species of Candida. The actinomyces with greater antagonism were selected and cultured by agitation, then the reliable extracellular metabolites were obtained with organic solvents, and finally the crude extracts were evaluated to determine quantitatively the minimum inhibiting concentration (MIC). Results. Thirty (30) actinomyces were isolated, of which 47% exhibited antagonistic activity against Candida albicans (C. albicans) ATCC 7516, 43% to Candida parapsilosis ATCC 7307, 37% to Candida tropicalis ATCC 7206 and C. albicans ATCC 10231, and 30% to C. albicans ATCC 98028. Organic extracts of the HAA-16 and HAA-17 strands exhibited noticeable anti-Candida activity, being the ethyl acetate extract of the HAA-17 strand the one with the highest performance thanks to a wider activity spectrum of MIC 3.25 mg/mL against C. albicans ATCC 7516 and Candida parapsilosis ATCC 7307. The selected actinomyces were identified by means of molecular techniques as members of the Streptomyces genus. Conclusions. Actinomyces associated to Atta cephalotes are excellent producers of bioactive compounds, being able to inhibit the growth of pathogenic mold of the Candida genus and with potential for application in the development of new natural products for the biomedical field.


Subject(s)
Animals , Ants/microbiology , Actinomyces/metabolism , Candida/drug effects , Antifungal Agents/pharmacology , Peru , Actinomyces/isolation & purification , Microbial Sensitivity Tests , Cross-Sectional Studies , Antifungal Agents/isolation & purification
4.
ImplantNewsPerio ; 3(3): 475-482, mai.-jun. 2018. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-905508

ABSTRACT

Objetivos: avaliar a presença do septo sinusal na população peruana. Materiais e métodos: um estudo transversal foi realizado em 298 seios maxilares de pacientes encaminhados ao Serviço de Radiologia Oral e Maxilofacial do Hospital Nacional Arzobispo Loayza, em Lima, Peru. A presença do septo, o número, a localização, o comprimento e a orientação dos avaliados, bem como idade, sexo e tipo de dentulismo, foram quantificados nas imagens da tomografi a computadorizada feixe cônico (TCFC), usando o software CS 3D Imaging. O teste Qui-quadrado foi realizado para tentar identifi car associações entre a presença do septo, condição dentária, idade e sexo, com 5% de significância, usando-se o SPSS20. Resultados: o septo no seio maxilar foi visto em 36,2% dos casos e estava ausente em 63,8%. Quanto à localização, 49,4% dos septos estavam no lado direito e 50,6% no lado esquerdo. Houve septos completos em 22,9% e incompletos em 77,1% dos casos. A localização do septo em maior proporção foi encontrada na parede basal, com 48,2%, seguido pelo setor anterior e medial do seio maxilar. O comprimento médio foi de 6,86 mm. Houve associação entre a frequência do septo e o sexo dos pacientes (teste Qui-quadrado de Pearson, p=0,015, graus de liberdade 1, ᵪ2= 5,894). Conclusão: cada população apresentará variações na localização e tamanho do septo do seio maxilar que devem ser cuidadosamente estudadas por TCFC para evitar rompimento da membrana e outras intercorrências que levam ao insucesso das terapias regenerativas e restauradoras.


Objectives: to evaluate the presence of the sinus septa in a Peruvian population. Materials and methods: a cross-sectional study was performed on 298 maxillary sinuses of patients referred to the Oral and Maxillofacial Radiology Service of the Arzobispo Loayza National Hospital, Lima, Peru. The presence of the septum, the number, location, length and orientation of the evaluated, as well as age, gender, type of dentulism were quantified in conical beam computed tomography (CTT) images using CS 3D Imaging software. The Chi-square test was performed to try to identify associations between the presence of the septum, dental condition, age and sex, with 5% of signifi cance, using SPSS20. Results: the septum in the maxillary sinus was seen in 36.2% of the cases and absent in 63.8%. Regarding the location, 49.4% of the septa on the right side and 50.6% on the left side. There were complete septa in 22.9% and incomplete septa in 77.1% of the cases. The location of the septum in greater proportion was found in the basal wall with 48.2%, followed by the anterior and medial sector of the maxillary sinus. The average length was 6.86 mm. There was an association between septum frequency and patients' gender (Pearson's Chi-Square test, p=0.015, degrees of freedom 1, ᵪ2 = 5.894). Conclusions: each population will present variations in the location and size of the septum of the maxillary sinus that must be carefully studied by CBCT to avoid membrane rupture and other intercurrences that lead to the failure of regenerative and restorative therapies.


Subject(s)
Humans , Male , Female , Cone-Beam Computed Tomography , Maxillary Sinus/anatomy & histology , Maxillary Sinus/diagnostic imaging , Retrospective Studies
5.
Rev. gastroenterol. Perú ; 38(2): 196-200, abr.-jun. 2018. ilus
Article in Spanish | LILACS | ID: biblio-1014081

ABSTRACT

La reparación de fístulas ano-recto-vaginales complejas representa un reto anatomoquirúrgico para el cirujano, debiendo seleccionarse el procedimiento quirúrgico adecuado para cada caso. El procedimiento de Martius consiste en la trasposición del músculo bulbocavernoso para reparar la fístula recto-vaginal. Se presentan cinco casos de fístulas ano-recto-vaginales reparadas por este procedimiento desde el 2010 hasta el 2014. La edad promedio fue de 38,2 años, tres fístulas (60%) fueron de etiología obstétrica, una inducida por radiación y otra de etiología desconocida. El seguimiento promedio fue de 25 meses, con una tasa de éxito de 100%. El procedimiento de Martius es una buena alternativa para la reparación quirúrgica de fístulas ano-recto-vaginales complejas.


The repair of complex anorectal-vaginal fistulas represents an anatomic-surgical challenge for the surgeon, and the appropriate surgical procedure must be selected for each case. The procedure of Martius is described as the transposition of the bulbocavernosus muscle to repair the recto-vaginal fistula. Five cases of anorectal-vaginal fistulae were repaired by this procedure from 2010 to 2014. The mean age was 38.2 years; three fistulas (60%) were of obstetric etiology, one induced by radiation and one of unknown etiology. The mean follow-up was 25 months, with a 100% success rate. The Martius procedure is a good alternative for the surgical repair of complex anorectal-vaginal fistulas.


Subject(s)
Adult , Female , Humans , Middle Aged , Gynecologic Surgical Procedures/methods , Rectovaginal Fistula/surgery
6.
Rev. méd. hered ; 28(2): 105-110, abr.-jun. 2017. ilus
Article in Spanish | LILACS, LIPECS | ID: biblio-991405

ABSTRACT

La pericarditis constrictiva es una causa de falla cardiaca derecha, que produce típicamente una alteración diastólica progresiva. Su corrección quirúrgica es posible con la pericardiectomía. La presentación en jóvenes y el compromiso importante de la función sistólica son escenarios infrecuentes. Se presenta el caso de una joven de 17 años con un cuadro de falla cardiaca congestiva. Los hallazgos de la ecocardiografía y resonancia cardiaca confirmaron el diagnóstico de pericarditis constrictiva. Se evidenció una disfunción sistólica con hipocinesia apical severa y con presencia de una masa a este nivel, compatible con trombo por la respuesta a anticoagulantes. La pericardiectomía se difirió por un alto riesgo operatorio y criterios de mal pronóstico por resonancia cardiaca. (AU)


Constrictive pericarditis is a cause of right heart failure that typically produces a progressive diastolic dysfunction. Pericardiectomy is the surgical indicated procedure. Presentation in young patients and systolic involvement are infrequent findings. We present the case of a 17-year-old female patient with congestive heart failure; findings of the heart ultrasound and magnetic resonance confirmed the diagnosis of constrictive pericarditis. Systolic dysfunction with severe apical hypokinesis and a mass like lesion compatible with a thrombus were observed. Pericardiectomy was deferred for the high surgical risk and for the bad prognostic findings on the magnetic resonance. (AU)


Subject(s)
Humans , Female , Adolescent , Pericarditis, Constrictive , Ventricular Function, Left , Heart Failure
7.
Rev. gastroenterol. Perú ; 36(1): 49-55, ene.-mar.2016. tab, graf
Article in Spanish | LILACS, LIPECS | ID: lil-790231

ABSTRACT

Determinar la prevalencia de Helicobacter pylori en pacientes sintomáticos de consulta externa en la Red Rebagliati (EsSalud) en el período 2010-2013. Materiales y métodos: Estudio observacional, transversal y analítico. Se revisaron los registros de pacientes ambulatorios con la prueba en aliento con urea-13C diagnóstica de Helicobacter pylori en el período 2010-2013. Resultados: De los 1711 pacientes, la prevalencia global de Helicobacter pylori fue 45,5% (IC 95%: 43,17- 47,89), siendo mayor en mujeres que en varones (47,1% vs. 42,1%, p=0,056). Hubo diferencias significativas en la edad entre infectados y no infectados (44 vs. 39, p<0,05), con asociación entre la edad y presencia de Helicobacter pylori (p<0,001). La prevalencia estimada en la población pediátrica fue 36,3% y se encontró resultado positivo en 201 (51,1%) mujeres en edad fértil. La mayoría (43,9%) procedían del sector financiero de la ciudad. Conclusiones: La prevalencia de Helicobacter pylori en la población de estudio fue similar en ambos sexos y tuvo relación con la edad. El nivel socioeconómico medio de Lima mantiene la prevalencia de Helicobacter pylori reportada en los últimos años...


To determine the prevalence of Helicobacter pylori in symptomatic outpatients in Red Rebagliati (EsSalud) from 2010 to 2013. Material and methods: An observational, transversal and analytical study. Records of outpatients with diagnostic 13C-urea breath test of Helicobacter pylori in the period 2010-2013 were reviewed. Results: Of the 1711 patients, the overall prevalence of Helicobacter pylori was 45.5% (95% CI: 43.17-47.89) being higher in women than in men (47.1% vs. 42.1%, p=0.056). There were significant differences in age between infected and uninfected (44 vs. 39, p<0.05), with association between age and the presence of Helicobacter pylori (p<0.001). The estimated prevalence in the pediatric population was 36.3% and was found positive in 201 (51.1%) women of childbearing age. Most (43.9%) came from the financial sector of the city. Conclusions: The prevalence of Helicobacter pylori in the study population was similar in both sexes and is related to age. The average socioeconomic status of Lima maintains the prevalence of Helicobacter pylori reported in the last years...


Subject(s)
Humans , Helicobacter pylori , Prevalence , Observational Study , Cross-Sectional Studies , Peru
8.
Rev. Soc. Venez. Microbiol ; 35(1): 17-20, nov. 2015.
Article in Spanish | LILACS | ID: lil-780209

ABSTRACT

Los metabolitos de un actinomiceto de origen marino, identificado como Streptomyces erythrogriseus cepa M10-77, fueron evaluados por su capacidad antimicrobiana y sinérgica con antibióticos convencionales. Las pruebas de antagonismo se realizaron frente a patógenos multidrogorresistentes (MDR) de origen clínico, siendo muy efectivos principalmente frente a especies patógenas de Staphylococcus y Enterococcus. Se determinó la Concentración Mínima Inhibitoria (CMI) de extractos diclorometánicos frente a los patógenos S. aureus 1094, S. epidermidis 1093 y Staphylococcus coagulasa negativo 348, siendo estos valores de 3,9; 15,7 y 1,9 µg/mL respectivamente. Los componentes del extracto diclorometánico fueron fraccionados parcialmente, obteniéndose hasta 4 fracciones orgánicas (I, II, III, IV), las que mostraron actividades inhibitorias de la cepa referencial S. aureus ATCC 43300. Los bioensayos frente a S. aureus meticilino resistente (MRSA) mostraron actividad sinérgica de la fracción II del extracto con antibióticos betalactámicos y aminoglucósidos, resaltando la repotenciación de la actividad de la bencilpenicilina en 128 veces el valor basal; así como de la gentamicina en 8 veces sobre el valor basal. S. erythrogriseus cepa M10-77 resultó ser un productor de metabolitos antibacterianos de alta potencia y con actividad sinérgica con antibióticos de referencia médica.


Metabolites of a marine actinomycete, identified as Streptomyces erythrogriseus M10-77 strain were evaluated for antimicrobial and synergistic activity with conventional antibiotics. Antagonism tests were conducted against multidrug resistant (MDR) pathogens of clinical origin, being very effective mainly against pathogenic Staphylococcus and Enterococcus. Minimum Inhibitory Concentrations (MIC) of dichloromethane extracts were determined against pathogenic S. aureus 1094, S. epidermidis and coagulase-negative Staphylococcus 1093 348, these values being 3.9; 15.7 and 1.9 μg/mL respectively. The components of dichloromethane extracts were fractionated partially yielding four organic fractions (I, II, III, IV), which showed inhibitory activity against the reference strain S. aureus ATCC 43300. The bioassays against S.aureus methicillin-resistant (MRSA ) produced synergistic activity of the extract fraction II with beta-lactams and aminoglycoside antibiotics, highlighting the upgrading of the activity of penicillin at 128 times above the baseline and gentamicin 8-fold above baseline. S. erythrogriseus M10-77 strain proved to be a producer of antibacterial metabolites with high power and synergistic activity with antibiotics of medical use.

9.
Arch. cardiol. Méx ; 82(4): 290-296, oct.-dic. 2012. ilus, tab
Article in Spanish | LILACS | ID: lil-695064

ABSTRACT

Introducción: El conducto arterioso permeable puede provocar hipertensión arterial pulmonar; éste ocupa el primer lugar de las cardiopatías congénitas quirúrgicas en la ciudad de Toluca, México. Métodos: En el periodo comprendido entre enero del 2006 y diciembre del 2011 se operaron 51 pacientes con conducto arterioso permeable: 34 (66.7%) del sexo femenino. Se estudia la reversibilidad de la presión arterial pulmonar y de la dilatación de cavidades izquierdas posterior al cierre quirúrgico del conducto arterioso permeable y se describen las complicaciones posquirúrgicas en la población de la ciudad de Toluca, localizada a una altitud de 2680 metros sobre el nivel del mar (msnm). Resultados: La reversibilidad de la presión pulmonar ocurrió en el 88% de los casos. También se observó una disminución de los diámetros de las cavidades izquierdas, manifestado por una relación de aurícula izquierda/anillo aórtico prequirúrgica de 2.0±0.41 y posquirúrgica de 1.36±0.25 (p<0.001). El cierre exitoso del conducto arterioso permeable inmediato fue del 94.1% y mediato del 98.0%. Se presentaron complicaciones posquirúrgicas en el 13.8% de los pacientes, todas fueron menores, siendo las principales: infección y hematoma de la herida quirúrgica (5.9%), neumotórax (3.9%), neumonía (2.0%) y derrame pleural (2.0%). Conclusiones: La hipertensión arterial pulmonar secundaria a conducto arterioso permeable es reversible en la mayoría de los casos después del cierre quirúrgico, incluso en habitantes de localidades por arriba de los 2500 msnm.


Introduction: Patent ductus arteriosus in Toluca can cause pulmonary hypertension and ranks first surgery of congenital heart disease in Toluca, Mexico. Methods: In the period between January 2006 and December 51 patients with patent ductus arteriosus went to surgery: 34 (66.7%) were female. We study the reversibility of pulmonary arterial pressure and the left cavities dilatation after surgical closure of the ductus arteriosus and postoperative complications are described in a population of Toluca, located at an altitude of 2680 meters over the sea. Results: The reversibility of pulmonary pressure ocurred in 88% of cases. We also observed a decrease in the diameters of the left chambers manifested by a ratio of left atrium/aortic annulus before surgery of 2.0 ± 0.41 SD and after surgery of 1.36 ± 0.25 SD, (p<0.001). The successful closure of the ductus arteriosus was 94.1% immediately and mediate 98.0%. Postoperative complications ocurred in 13.8%, being the main infection and surgical wound hematoma (5.9%), pneumothorax (3.9%), pneumonia (2.0%) and pleural efusion (2.0%). Conclusions: Pulmonary arterial hypertension secundary to patent ductus arteriosus is reversible in the mayority of cases after surgical closure, including residents of village above 2500 meters over the sea.


Subject(s)
Child, Preschool , Female , Humans , Infant , Infant, Newborn , Male , Altitude , Ductus Arteriosus, Patent/complications , Ductus Arteriosus, Patent/surgery , Hypertension, Pulmonary/complications , Mexico , Postoperative Complications/epidemiology , Postoperative Complications/etiology
10.
Acta bioquím. clín. latinoam ; 45(2): 305-310, abr.-jun. 2011. ilus
Article in Spanish | LILACS | ID: lil-633153

ABSTRACT

En el presente trabajo se estudiaron 74 bacterias lácticas para determinar su capacidad de inhibir el desarrollo de Listeria monocytogenes ATCC 7644 o L. innocua ATCC 33090. Dentro de las 7 que exhibieron actividad, 2 se seleccionaron para estudios complementarios y se identificaron por métodos fenotípicos y genotípicos como Enterococcus mundtii Tw 56 y Lactococcus lactis subsp. lactis Tw 34. Después de la neutralización con NaOH y tratamiento térmico (100 ºC y 121 ºC durante 5 min) la actividad antagonista del sobrenadante libre de células se mantuvo activa. El tratamiento con lisozima, lipasa y catalasa no afectó la actividad antimicrobiana. Sin embargo, la actividad enzimática de la tripsina suprimió la acción inhibitoria del sobrenadante, confirmando la naturaleza proteica del compuesto activo. En ambos casos, el título de la actividad antilisteria no se vio afectado luego de la inducción mediada por nisina o galactosa. La combinación de los sobrenadantes libres de células no exhibió antagonismo o sinergia. Las características bioquímicas y fisicoquímicas de los agentes antilisteria producidos por las cepas seleccionadas sugieren que pueden ser clasificadas como bacteriocinas tipo I o II. Se deben realizar estudios complementarios para determinar el uso potencial de las cepas seleccionadas como cultivos bioprotectores en el control de la seguridad alimentaria.


In the present work, 74 strains of lactic bacteria isolated from the marine environment were studied in order to determinate their ability to inhibit the growth of Listeria monocytogenes ATCC 7644 or L. innocua ATCC 33090. Among the 7 strains that exhibited some activity, 2 were selected for further studies and identified by phenotypic and genotypic methods as Enterococcus mundtii Tw 56 y Lactococcus lactis subsp. lactis Tw 34. After neutralization with NaOH and heat treatment (100 ºC and 121 ºC for 5 min) the antagonistic activity of cell-free supernatants of the two strains studied remained active. Treatment with lysozime, lipase and catalase did not affect the antimicrobial activity; however enzymatic activity of trypsin abolished the inhibitory action of the supernatant, confirming the proteinacious nature of the active compound. In both cases, the titre of antilisterial activity was not affected after nisin or galactose-mediated induction. The combination of cell-free supernatants of both strains did not display antagonism or synergy. The biochemical and physicochemical characteristics of antilisterial agents produced by the selected strains suggest that they can be classified as type I or II bacteriocins. Further studies will be adressed to determine the potential use of the selected strains as bioprotective cultures in food safety control.


No presente trabalho foram estudadas 74 bactérias lácticas para determinar sua capacidade de inibir o desenvolvimento de Listeria monocytogenes ATCC 7644 ou L. innocua ATCC 33090. Dentro das 7 que exibiram atividade, 2 foram selecionadas para estudos complementares e se identificaram por métodos fenotípicos e genotípicos como Enterococcus mundtii Tw 56 e Lactococcus lactis subsp. lactis Tw 34. Depois da neutralização com NaOH e tratamento térmico (100 ºC e 121 ºC durante 5 min) a atividade antagonista do sobrenadante livre de células se manteve ativa. O tratamento com lisozima, lipase e catalase não afetou a atividade antimicrobiana. Entretanto, a atividade enzimática da tripsina suprimiu a ação inibidora do sobrenadante, confirmando a natureza proteica do composto ativo. Em ambos os casos, o título da atividade antilisteria não se viu afetado depois da indução mediada por nisina ou galactose. A combinação dos sobrenadantes livres de células não exibiu antagonismo ou sinergia. As características bioquímicas e fisioquimicas dos agentes antilisteria produzidos pelas cepas selecionadas sugerem que podem ser classificadas como bacteriocinas tipo I ou II. Devem ser realizados estudos complementares para determinar o uso potencial das cepas selecionadas como culturas bioprotetoras no controle da segurança alimentar.


Subject(s)
Bacteriocins , Foodborne Diseases , Listeria , Listeria monocytogenes , Marine Environment , Anti-Infective Agents/analysis , Foodborne Diseases/microbiology , Microbiology
11.
Rev. méd. hered ; 21(2): 97-102, abr.-jun. 2010. ilus
Article in Spanish | LILACS, LIPECS | ID: lil-568272

ABSTRACT

Presentamos el caso de una paciente con cardiomiopatía periparto quien súbitamente presentó hemiplejia flácida, producido por un accidente cerebrovascular de origen cardioembólico con transformación hemorrágica en la evolución. El diagnóstico fue clínico, ecocardiográfico y tomográfico. La evolución del cuadro neurológico fue favorable, con recuperación parcial de la funcionalidad. Se presenta este caso debido a la presentación atípica de una nosología infrecuente: "la cardiomiopatía periparto", cuyas complicaciones suscitaron controversias en el manejo terapéutico.


We report a case of a patient with peripartum cardiomyopathy, who suddenly suffered left hemiplejia. The neurological status was the result of Cardioembolic Stroke which transformed from ischemic to hemorrhagic in evolution. The diagnosis was based on the clinical, echocardiographical and tomographical findings. The evolution of the neurological status improved, nevertheless the cardiac and neurologic disease recovery almost completely. We present this case due the atypical presentation of peripartum cardiomyopathy in this patient, and the neurological complication that generated controversies in its management.


Subject(s)
Humans , Adult , Female , Pregnancy , Stroke , Cardiomyopathies , Heart Failure , Blood Coagulation Disorders
12.
Arch. cardiol. Méx ; 78(1): 79-86, ene.-mar. 2008.
Article in Spanish | LILACS | ID: lil-567780

ABSTRACT

From 1991 to 2003 were studied 33 cases with absent pulmonary valve syndrome (AVPS): 66% were female, with a medium age of 1.5 years old and 11 kg of weight. Twenty seven cases (82%) were associated to Tetralogy of Fallot. Fourteen patients (5 younger than 1 year old) had corrective surgery. After the surgery, one patient required ballon pulmonary valvuloplasty for pulmonary stenosis; another one required surgery for changing the pulmonary prothesis one and five years after the first surgery. The rest of the patients did not present important problems. The five year survival was 95.4% in patients older than 6 months and 30.1% in younger patients (p = 0.000). As factors associated to mortality were the age younger than six months old (p = 0.003) and mechanical ventilation (p = 0.001) in our population. We suggest to delay the surgery in this group of patients because no survival were seen with or without the surgery. In older children with symptoms, the surgery also must be delayed in order to avoid more interventions for changing the pulmonary prothesis.


Subject(s)
Adolescent , Child , Child, Preschool , Female , Humans , Infant , Infant, Newborn , Male , Pulmonary Valve/abnormalities , Pulmonary Valve , Congenital Abnormalities , Risk Factors
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