lnc-THRIL and miR-125b relate to disease risk, severity, and imbalance of Th1 cells/Th2 cells in allergic rhinitis

Objective: Tumor necrosis factor and HNRNPL-related immunoregulatory long noncod-ing RNA (lnc-THRIL) and its target microRNA (miR)-125b are reported to regulate immune response through several means by participating in allergic rhinitis (AR) pathology. This study aimed to investigate the role of lnc-THRIL and miR-125b in detecting AR risk, and to further explore their correlation with disease severity and cytokines released from T helper type (Th) 1 and Th2 in AR patients.Methods: A total of 160 AR patients and 80 subjects with severe snoring symptoms (as con-trols) were recruited. Nasal mucosa samples were collected to measure the expressions of lnc-THRIL, miR-125b, and Th1 and Th2 cytokines by reverse transcription quantitative polymerase chain reaction.Results: The expression of lnc-THRIL decreased while that of miR-125b increased in AR patients when compared with that of controls, and further receiver operating characteristic curve showed that both could well distinguish AR patients from controls. Furthermore, lnc-THRIL negatively correlated with miR-125b in AR patients. lnc-THRIL was negatively correlated with Individual Nasal Symptom Score (INSS) (including nasal rhinorrhea score, sneezing score, and congestion score) and Total Nasal Symptom Score (TNSS), and miR-125b was positively asso-ciated with INSS (including itching score, sneezing score, and congestion score) and TNSS. Moreover, lnc-THRIL was correlated with increased Th1 cytokines (interferon-gamma (IFN-γ) and interleukin (IL)-2) but with decreased Th2 cytokines (IL-4 and IL-10), while miR-125b exhib-ited opposite trends in AR patients.Conclusion: lnc-THRIL and its target (miR-125b) relate to disease risk, symptom severity, and Th1/Th2 imbalance of AR, suggesting their potential as biomarkers for AR management (AU)

Mucociliary clearance in patients with continuous ambulatory peritoneal dialysis / Aclaramiento mucociliar en pacientes con diálisis peritoneal ambulatoria continua

INTRODUCTION: Mucociliary clearance (MC) is a critical defense mechanism for the protection of the entire respiratory system. Nasal colonization of some pathogens and chronical nasal infections are important risk factors for peritonitis. Any disturbance in the MC causes stasis of secretions and secondary infections. OBJECTIVE: The aim of the study was to evaluate the patients with chronic kidney disease (CKD) receiving continuous ambulatory peritoneal dialysis (CAPD) in terms of nasal MC. More specifically, the goal is to investigate the possible correlation between the nasal MC and peritonitis. METHODS: Forty CAPD patients and 39 healthy volunteers were involved in the study. The nasal MC was evaluated with the saccharin test, in which a 1 mm diameter saccharin particle was carefully placed on the antero-medial surface of inferior nasal concha. The time taken by the subjects from the placement of particle to the perception of the sweet taste was taken as mucociliary clearance time (MCT). The groups were compared in terms of MCT. The patient group was evaluated in terms of a peritonitis history, and the correlations with MC were analyzed. RESULTS: Patient group with CKD consisted of 16 females and 24 males with a mean age of 32.4 years; healthy individuals in the control group consisted of 17 women and 22 men with a mean age of 33.3 years. There was not a significant difference in terms of mean MC time in patients with CKD when compared with the individuals in the control group. The comparison between the mean MCT in the patients who had a history of peritonitis and patients without peritonitis was statistically significant (p < 0.05). CONCLUSIONS: Unique for being conducted with patients in continuous ambulatory peritoneal dialysis, the current study shows that although the MC of CKD patients and healthy individuals is similar, patients with low rates of MC appear to present an increased incidence of peritoneal infection. Considering the small sample investigated, an invitation to future confirmatory studies would be appropriate

INTRODUCCIÓN: El aclaramiento mucociliar (AM) es un mecanismo de defensa fundamental para la protección del sistema respiratorio. La colonización nasal de algunos patógenos y las infecciones nasales crónicas son factores de riesgo importantes de peritonitis. Cualquier alteración en el AM provoca estasis de secreciones e infecciones secundarias. OBJETIVO: El objetivo de este estudio fue evaluar el AM nasal de los pacientes con nefropatía crónica (NC) que recibían diálisis peritoneal ambulatoria continua (DPAC). Más concretamente, el objetivo fue estudiar la posible relación entre el AM nasal y la peritonitis. MÉTODOS: Cuarenta pacientes en DPAC y 39 voluntarios sanos participaron en el estudio. El AM nasal se evaluó con la prueba de sacarina, en la que se colocó cuidadosamente una partícula de sacarina, de 1 mm de diámetro, en la superficie anteromedial del cornete nasal inferior. El tiempo transcurrido desde el momento en que se colocó la partícula hasta que los pacientes percibieron el sabor dulce se consideró el tiempo de aclaramiento mucociliar (TAM), parámetro que se empleó para hacer la comparación entre los grupos. Se evaluaron los antecedentes de peritonitis en el grupo de pacientes y se analizaron las correlaciones con el AM. RESULTADOS: El grupo de pacientes con NC constó de 16 mujeres y 24 hombres con una media de edad de 32,4 años. Los pacientes sanos en el grupo control fueron 17 mujeres y 22 hombres con una media de edad de 33,3 años. No se observó una diferencia significativa en el tiempo medio de AM en pacientes con NC respecto a los pacientes del grupo control. La comparación entre el TAM medio en los pacientes con antecedentes de peritonitis y en pacientes sin peritonitis fue estadísticamente significativa (p < 0,05). CONCLUSIONES: Único por llevarse a cabo en pacientes con diálisis peritoneal ambulatoria continua, el estudio actual muestra que, aunque el AM de pacientes con NC y pacientes sanos es similar, los pacientes con tasas bajas de AM parecen presentar un aumento de la incidencia de infección peritoneal. Teniendo en cuenta la pequeña muestra estudiada, consideramos conveniente realizar nuevos estudios de confirmación

Evaluación del cumplimiento de las recomendaciones de "no hacer" de la Sociedad Española de Medicina Preventiva y Salud Pública / Compliance evaluation of "do not do" recommendations of the Spanish Society of Preventive Medicine and public health

OBJETIVO: La reducción de las intervenciones sanitarias innecesarias, bien porque no han demostrado su eficacia, bien porque poseen efectividad dudosa o no son eficientes, mejora la calidad de la atención sanitaria. El objetivo de este trabajo fue evaluar el grado de cumplimiento de las recomendaciones consensuadas por la Sociedad Española de Medicina Preventiva, Salud Pública e Higiene para el proyecto "No hacer". MÉTODOS: Se realizó un estudio prospectivo, observacional y descriptivo de pacientes ingresados en el Hospital Universitario de La Princesa entre diciembre de 2018 y enero de 2019. Se evaluó el cumplimiento de cada recomendación en diferentes pacientes. Se calcularon porcentajes e intervalos de confianza en las variables cualitativas y el las cuantitativas la media y desviación estándar. RESULTADOS: En la Recomendación 1 (R1: "No eliminar el vello de forma sistemática"), se estudiaron 231 intervenciones y el cumplimiento de la recomendación fue del 100% (IC95%: 98,27-100%). En la Recomendación 2 (R2: "No continuar con antibióticos más de 48 horas, a menos que haya evidencia de infección"), se estudiaron 201 intervenciones y el cumplimiento de la recomendación fue del 93,53% (IC95%: 90,09-96,91%). En la Recomendación 3 (R3: "No realizar análisis de toxina C. difficile en pacientes asintomáticos"), se estudiaron 200 determinaciones y el cumplimiento fue del 93,5% (IC95%: 90,08-96,92%). En la Recomendación 4 (R4: "No utilizar descontaminante nasal rutinario"), se reclutaron 167 intervenciones y el cumplimiento fue del 100% (IC95%: 97,6-100%). En la Recomendación 5 (R5: "No reemplazo rutinario de catéter venoso periférico cada 72-96 horas"), se estudiaron 153 pacientes con un cumplimiento de 98,04% (IC95%: 94,12-99,35%). CONCLUSIONES: Se comprueba un cumplimiento del 100% en las Recomendaciones 1 y 4. Hay oportunidad de mejora en las recomendaciones R2, R3 y R5

OBJECTIVE: The reduction of unnecessary health interventions determines good care quality. The objective of this work was to evaluate the compliance of the "do not do" recommendations proposed by the Spanish Society of Preventive Medicine, Public Health and Hygiene. METHODS: Prospective, observational, descriptive study of patients admitted to the La Princesa University Hospital between December 2018 and January 2019. The compliance of each recommendation in different patients was analyzed. The quantitative variables are expressed as means and standard deviation and the qualitative values as percentages and confidence interval. RESULTS: In Recommendation 1 (R1: "Do not remove hair systematically"), 231 interventions were studied and the compliance was of 100% (95% CI: 98.27-100). In Recommendation 2 (R2: "Do not maintain antibiotics for more than 48 hours, unless evidence of infection"), 201 interventions were studied and the compliance was of 93.53% (95% CI: 90.09-96.91). In Recommendation 3 (R3: "Do not analyze C. difficile toxin in asymptomatic patients"), 200 determinations were studied and the compliance was of 93.5% (95% CI: 90.08-96.92). In Recommendation 4 (R4: "Do not do routine nasal decolonization"), 167 interventions were recruited and the compliance was of 100% (95% CI: 97.6-100). In Recommendation 5 (R5: "Do not perform routine replacement of peripheral venous catheter every 72-96 hours"), 153 patients were studied in compliance with the recommendation of 98.04% (95% CI: 94.12-99.35). CONCLUSIONS: A 100% compliance was found in Recommendations 1 and 4. There is an opportunity of improvement in the recommendations R2, R3 and R5

Association between pollen exposure and nasal cytokines in grass pollen-allergic children

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Efecto de la presión positiva continua nasal sobre las fosas nasales de pacientes con síndrome de apneas del sueño sin patología nasal previa. Factores predictivos de cumplimiento / Effect of Nasal Continuous Positive Pressure on the Nostrils of Patients with Sleep Apnea Syndrome and no Previous Nasal Pathology. Predictive Factors for Compliance

Objetivo: Evaluar el efecto de la presión positiva continua en la vía aérea (CPAP) sobre las fosas nasales de pacientes con síndrome de apnea hipopnea del sueño y su impacto en la calidad de vida, e identificar factores predictivos de cumplimiento. Métodos: Estudio prospectivo longitudinal. Treinta y seis pacientes consecutivos evaluados antes y 2 meses tras CPAP usando las siguientes variables clínicas (síntomas otorrinolaringológicos, test de Epworth, escala de ansiedad/depresión, calidad de vida general y específica para rinoconjuntivitis); anatómicas (exploración otorrinolaringológica, tomografía computarizada); funcionales (función auditiva y tubárica, flujo nasal, transporte mucociliar); biológicas (citología nasal), y polisomnográficas. Se dividió la muestra entre cumplidores (≥4 h/d) y no cumplidores (<4 h/d). Resultados: Se objetivó una mejoría significativa en la somnolencia diurna (p = 0,000), la ansiedad (p = 0,006) y la depresión (p = 0,023). Se evidenció sequedad nasal (p = 0,000), aumento de neutrófilos en la citología nasal (p = 0,000) y deterioro de la función ciliar, especialmente en cumplidores. No se evidenciaron diferencias significativas en el resto de las variables. La somnolencia inicial fue el único factor pronóstico de cumplimiento. Conclusiones: El tratamiento con CPAP en pacientes sin patología nasal previa mejora una serie de parámetros clínicos y provoca rinitis y sequedad en la vía aérea. Algunas de las variables otorrinolaringológicas empeoran en los cumplidores. La somnolencia fue el único factor pronóstico de mala tolerancia

Objective: To evaluate the effect of continuous positive airway pressure (CPAP) on the nostrils of patients with sleep apnea-hypopnea syndrome and its impact on quality of life, and to identify predictive factors for compliance. Methods: Longitudinal prospective study. Thirty-six consecutive patients evaluated before and 2 months after CPAP using the following variables: clinical (eye, nose and throat [ENT] symptoms, Epworth test, anxiety/depression scales, general and rhinoconjunctivitis-specific quality of life); anatomical (ENT examination, computed tomography); functional (auditive and Eustachian tube function, nasal flow, mucociliary transport); biological (nasal cytology); and polisomnographics. The sample was divided into compliers (≥4 h/d) and non-compliers (<4 h/d). Results: A significant improvement was observed in daytime sleepiness (p = 0.000), anxiety (P = .006), and depression (P = .023). Nasal dryness (P = .000), increased neutrophils in nasal cytology (P = .000), and deteriorating ciliary function were evidenced, particularly in compliers. No significant differences were observed in the other variables. Baseline sleepiness was the only factor predictive of compliance. Conclusions: CPAP in patients without previous nasal pathology leads to an improvement in a series of clinical parameters and causes rhinitis and airway dryness. Some ENT variables worsened in compliers. Sleepiness was the only prognostic factor for poor tolerance

Nuclear alterations in nasal mucosa epithelial cells of students exposed to formaldehyde / Alteraciones en los núcleos de las células epiteliales de la mucosa nasal de los estudiantes expuestos a formaldehído

INTRODUCTION: Formaldehyde is a compound with a wide range and is commonly used in anatomy and pathology laboratories. At room temperature is quickly volatilized to a pungent and suffocating gas and its inhalation has been correlated to nuclear alterations in different tissues. We aimed to investigate whether exposure to this compound was correlated with the appearance of cytotoxic and genotoxic features in the nasal epithelial cells of students enrolled in a human anatomy course. MATERIAL AND METHODS: This prospective study collected periodically nasal cells from mucosa of 17 volunteers from two different undergraduate programs with different workloads of practical lessons in an anatomy laboratory, 30 and 90 hours per semester. Cells were staining according to Feulgen method and nuclear morphology was analyzed to detect possible damage. Dunn's post hoc test was used in the statistical analysis. Pearson's correlation was performed for gender, age and questionnaire responses. RESULTS: Epithelial cells showed indicators of cytotoxicity and mutagenicity. Students with a more extensive workload in anatomy laboratory displayed a more severe profile with an increase in karyorrhexis (p 0.05). CONCLUSION: Individuals exposed for short periods of time to formaldehyde are subject to the toxic action of this gas. Karyorrhexis was the most frequently observed cytotoxic feature and micronucleus showed an increase between the first time point. The patterns observed between the student's groups suggest a negative effect due to exposure time

INTRODUCCIÓN: El formaldehído es un compuesto con una amplia variedad y se utiliza comúnmente en los laboratorios de anatomía y patología. En la temperatura ambiente se volatiliza rápidamente en un gas acre sofocante. Su inhalación se ha correlacionado con la aparición de alteraciones nucleares en diferentes tejidos. El objetivo fue investigar si la exposición a este compuesto podría estar relacionado con la aparición de aspectos citotóxicos y genotóxicos en las células epiteliales nasales de los estudiantes del curso de anatomía humana. MATERIAL Y MÉTODOS: En este estudio las células nasales proclives se recogieron periódicamente de la mucosa de los 17 voluntarios de las carreras universitarias con diferentes cargas de clases prácticas en el laboratorio de anatomía, 30 y 90 horas semestrales. Las células fueron teñidas por el método de Feulgen y la morfología nuclear fue evaluada para la detección de posibles daños. Prueba post hoc de Dunn fue utilizada para el análisis estadístico. Correlación de Pearson fue realizada con los datos de sexo, edad y las respuestas del cuestionario. RESULTADOS: Las células epiteliales mostraron indicadores de citotoxicidad, mutagenicidad. Los estudiantes con una carga de trabajo más extensa en el laboratorio de anatomía mostraron perfil más grave con el aumento de cariorrexis (p 0,05). CONCLUSIÓN: Individuos expuestos durante cortos períodos de tiempo a formaldehído están sujetos a la acción tóxica de gas. Cariorrexis fue la característica citotóxica observada con mayor frecuencia y micronúcleos mostraron un aumento entre el primer punto de tiempo. Los diferentes patrones de daños observados entre los grupos de estudiantes sugieren que el efecto negativo de gas puede está relacionado con el tiempo de exposición

Mucocutaneous leishmaniasis caused by Leishmania infantum var Lombardi in an immunocompetent patient, Spain / Leishmaniasis mucocutánea causada por Leishmania infantum var Lombardi en un paciente inmunocompetente, España

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Sarcoma de Ewing: una rareza en la región nasosinusal / Ewing's sarcoma: A rarity in sinonasal region

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Nasal carriage of coagulase positive staphylococci in patients of a Primary-Healthcare-Center: genetic lineages and resistance and virulence genes / / Staphylococcus coagulasa positiva en muestras nasales de pacientes de un centro de atención primaria: líneas genéticas y contenido en genes de resistencia y de virulencia

INTRODUCTION: Staphylococcus aureus and Staphylococcus pseudintermedius are highly important due to their capacity for producing diseases in humans and animals, respectively. The aim of the study was to investigate and characterize the coagulase positive Staphylococcus (CoPS) carriage in a Primary Healthcare Center population. METHODS: Nasal swabs were obtained from 281 non-infectious patients. The CoPS isolates recovered were typed, and their resistance phenotype and genotype, as well as their virulence profiles, were analyzed. RESULTS: CoPS isolates were recovered from 56/281 patients (19.9%). Fifty-five were S. aureus (19.6%), 54 were methicillin susceptible (MSSA) and one was methicillin resistant (MRSA). The remaining isolate was S. pseudintermedius (0.4%). A high diversity of spa-types (n = 40) was detected, with 6 of them being new ones. The multi-locus-sequence-typing of 13 MSSA and one MRSA selected isolates was performed and the STs detected were: ST8, ST15, ST30, ST34, ST121, ST146, ST398, ST554, ST942, ST2499, and ST2500 (the last two STs being new). One MSSA isolate was typed as t1197-ST398-(Clonal complex)CC398. The MRSA isolate was typed as t002-ST146-CC5-SCCmec-IVc, and exhibited a multiresistance phenotype. The detected resistances were: penicillin (76%), macrolides (7%), tetracycline (7%), trimethoprim-sulfamethoxazole (7%), quinolones (7%), and lincosamides (5%). Five isolates contained lukF/lukS-PV genes, 17 tst gene, one eta gene, and two etb gene. The S. pseudintermedius isolate presented a new spa-type (t57) (belonging to a new ST180) and the geneslukS/F-I, siet, se-int, and expB. CONCLUSIONS: A high genetic diversity of S. aureus was detected. Mention must be made of the identification of MSSA CC398 and S. pseudintermedius isolates in two patients, one of them with animal contact. The detection of the genes lukF/lukS-PV and tst should be noted

INTRODUCCIÓN: Staphylococcus aureus y Staphylococcus pseudintermedius son 2 especies de gran importancia que pueden producir enfermedades tanto en personas como en animales. El objetivo del trabajo fue estudiar el estado de portador nasal de aislados de Staphylococcus coagulasa positiva (SCoP) en pacientes de un centro de atención primaria. MÉTODOS: Se analizaron muestras nasales de 281 pacientes sin patología infecciosa. Se tiparon los aislados SCoP y se estudiaron sus fenotipos y genotipos de resistencia y sus perfiles de virulencia. RESULTADOS: Se aislaron SCoP en 56/281 pacientes (19,9%): 55 de los aislados fueron S. aureus (19,6%), 54 sensibles a la meticilina (SASM) y uno resistente a la meticilina (SARM). El aislado restante correspondió a S. pseudintermedius (0,4%). Se detectó una alta diversidad de tipos de spa (n = 40), identificándose 6 nuevos tipos. Se realizó el multi-locus-sequence-typing de 13 cepas SASM y una cepa SARM seleccionadas y se detectaron los siguientes STs: ST8, ST15, ST30, ST34, ST121, ST146, ST398, ST554, ST942, ST2499 y ST2500 (los 2 últimos nuevos). Una de las cepas SASM se tipó como t1197-ST398-(Clonal Complex)CC398. La cepa SARM se tipó como t002-ST146-CC5-SCCmec-IVc y mostró un fenotipo de multirresistencia. Se detectó resistencia a: penicilina (76%), macrólidos (7%), tetraciclina (7%), trimetoprim-sulfametoxazol (7%), quinolonas (7%) y lincosamidas (5%). Se identificaron los genes (número de cepas): lukF/lukS-PV (5), tst (17), eta (1) y etb (2). La cepa de S. pseudintermedius presentó un spa nuevo (t057), una secuencia tipo nueva (ST180), y contenía los genes lukS/F-I, siet, se-int y expB. CONCLUSIONES: Se detectó una alta diversidad genética entre los aislados de SASM. Destaca la identificación de una cepa SASM CC398 (en un veterinario) y otra de S. pseudintermedius, y la frecuente detección de los genes lukF/lukS-PV, tst, eta o etb entre las cepas SASM

Mucosa nasal: un nuevo tejido para el diagnóstico biópsico de amiloidosis hereditaria relacionada con transtirretina / Nasal mucosa: A new site for tissue biopsy to diagnose hereditary TTR amyloidosis

Background and objective: We report 2 carriers of the TTRV30M mutation and its plasmatic biochemical marker with clinical symptoms compatible with hereditary TTR amyloidosis. Materials and methods: Based on our previously reported casual finding of amyloid TTR in nasal mucosa (2008), we requested biopsy of this tissue to search for amyloid with Congo red staining and TTR immunohistochemical analysis. Results: The histological diagnosis was achieved by retrospective analysis of surgical sinonasal biopsy in the first patient and prospective biopsy of inferior nasal concha in the second. Large interstitial deposits of ATTR were observed in both cases. Conclusions: We suggest nasal mucosa as a suitable site for tissue biopsy in patients with suspected hereditary TTR amyloidosis (AU)

Antecedentes y objetivo: Presentamos 2 portadores de la mutación TTRV30M y su marcador bioquímico plasmático, con síntomas sugestivos de amiloidosis hereditaria TTR. Material y métodos: Basándonos en el hallazgo casual de amiloide TTR en la mucosa nasal previamente publicado (2008), indicamos la biopsia de este tejido para la búsqueda de amiloide TTR con tinción Rojo Congo y análisis inmunohistoquímico de TTR. Resultados: El diagnóstico histológico se logró en el primer enfermo con análisis retrospectivo de la biopsia de material operatorio sinonasal, y en el segundo con biopsia prospectiva del cornete nasal inferior. En ambos casos se observaron grandes depósitos intersticiales de amiloide de amiloidosis hereditaria relacionada con transtirretina. Conclusiones: Consideramos que la biopsia de la mucosa nasal es idónea para el diagnóstico de pacientes con sospecha de amiloidosis hereditaria TTR (AU)

Colgajo mio-condro-mucoso de rotación combinado con colgajo de trasposición melolabial para la reconstrucción de defectos de espesor total del ala nasal / Myochondromucosal Rotation Flap Combined With a Melolabial Transposition Flap for the Reconstruction of Full-Thickness Defects of the Ala Nasi

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Expression of epidermal growth factors and a tight junction protein in the nasal mucosa of patients with chronic hypertrophic rhinitis

Background: ErbB family receptors and tight junction proteins participate in the pathologic process including tissue remodelling of inflammatory diseases in the upper and lower respiratory tracts. This study aimed at investigating the expressions of erbB1, 2, 3, 4, and a tight junction protein, claudin-1, in the nasal mucosa of patients with chronic hypertrophic rhinitis. Methods: Inferior turbinates were collected from 10 turbinectomised patients with allergic and non-allergic chronic hypertrophic rhinitis. The expressions of erbB1, 2, 3, 4, and claudin-1 were examined by fluorescence immunohistochemistry and by quantitative real-time transcription-polymerase chain reaction (qRT-PCR). Results: All erbB1-4 and claudin-1 were detected, and mainly localised in the epithelial cells and nasal gland cells. The immunoreactivity for claudin-1 was positively correlated with the expressions of erbB1, 2 and 4, but negatively correlated with that of erbB3. The mRNA expressions of erbB1, 2 and 4 were positively correlated with one another, whereas the expression of erbB3 showed negative correlation with the immunoreactivity for erbB2 and 4. Conclusions: These results suggest a possible participation of erbBs and claudin-1 in tissue remodelling in chronic hypertrophic rhinitis (AU)

Radiomarcaje y estudios de biodistribución de nanopartículas poliméricas como adyuvantes para la vacunación oftálmica frente a la brucelosis / Radiolabeling and biodistribution studies of polymeric nanoparticles as adjuvants for ocular vaccination against brucellosis

Objetivo. Optimizar el radiomarcaje con 99mTc de nanopartículas de Gantrez® manosiladas y cargadas con el antígeno de Brucella ovis (Man-NP-HS) y llevar a cabo estudios de biodistribución en un ratón tras la administración de las nanopartículas por vía ocular. Material y métodos. Las Man-NP-HS se obtuvieron por el método de desplazamiento del disolvente. Se purificaron, liofilizaron y caracterizaron. A continuación, se marcaron con 74MBq de 99mTcO4− previamente reducido con una disolución ácida de cloruro de estaño, trabajando en ausencia de oxígeno y con un pH final de 4. El rendimiento del marcaje se evaluó mediante TLC. Los estudios de biodistribución se llevaron a cabo en ratones tras la administración oftálmica de la formulación y de un control de 99mTcO4− libre. Para ello, se sacrificaron los animales a las 2 y a las 24h tras la administración ocular y se contaron los órganos en un contador gamma. Resultados. Se obtuvo un rendimiento de marcaje superior al 90%. Los estudios de biodistribución de 99mTc-Man-NP-HS permitieron detectar la actividad concentrada en la mucosa nasal y ocular y el tracto gastrointestinal tanto a las 2 como a las 24h frente a la biodistribución de 99mTcO4− libre que permaneció concentrado en la piel alrededor del ojo y en el tracto gastrointestinal. Conclusión. Los estudios de biodistribución de 99mTc-Man-NP-HS tras la administración oftálmica han permitido demostrar su biodistribución en las mucosas y el tracto gastrointestinal, característica indispensable como sistema de liberación de antígenos a través de la mucosa ocular. Esto, junto con su elevada respuesta inmune, efectiva protección y no virulencia, convierte a estas nanopartículas en una vacuna ideal antibrucelosis (AU)

Purpose. To optimize radiolabeling with 99mTc of mannosylated Gantrez® nanoparticles loaded with the Brucella Ovis antigen (Man-NP-HS) and to carry out biodistribution studies in mice after ocular administration of the nanoparticles. Material and methods. Man-NP-HS nanoparticles were prepared by the solvent displacement method. They were purified, lyophilized and characterized. Following this, they were radiolabeled with 74 MBq of 99mTcO4− previously reduced with an acidic stannous chloride solution, working in absence of oxygen and at a final pH of 4. Radiolabeling yield was evaluated by TLC. Biodistribution studies were carried out in mice after ocular administration of the formulation and control of free 99mTcO4−. To do so, the animals were humanely killed at 2 and 24hours after the ocular administration and activity in organs was measured in a Gamma counter. Results. Radiolabeling yield obtained was greater than 90%. Biodistribution studies of 99mTc-Man-NP-HS showed radioactivity accumulated at 2 and 24hours in nasal and ocular mucosa and gastrointestinal tract, in contrast to biodistribution of free 99mTcO4− that remained concentrated in the skin around the eye and gastrointestinal tract. Conclusion. Biodistribution studies of 99mTc-Man-NP-HS after ocular instillation have made it possible to demonstrate its biodistribution in nasal mucosa and gastrointestinal tract. This characteristic is essential as an antigenic delivery system throughout the ocular mucosa. This, together with its elevated immune response, effective protection and intrinsic avirulence make them a suitable anti-Brucella vaccine candidate (AU)

Colgajo lingual para cierre de fístula oronasal: aportación a la técnica / Lingual flap for closure of oronasal fistula: contribution to the technique

La fístula oronasal es la complicación más común posterior a una palatoplastía y frecuentemente requiere de una reparación secundaria. Se ha desarrollado una gran cantidad de técnicas quirúrgicas para su manejo, siendo una de las más populares el colgajo lingual. A pesar de la excelente vascularidad de la lengua, para asegurar la viabilidad del colgajo, éste debe ser manejado con extremo cuidado durante el procedimiento. Con este propósito sugerimos el uso de una platina acrílica en forma de herradura que aporta estabilidad e inmoviliza la lengua durante la cirugía, lo que facilita el procedimiento y ayuda a evitar errores durante el diseño y el levantamiento del colgajo(AU)

The oronasal fistula is the most common complication after a palatoplasty and it frequently needs a secondary repair. A great number of surgical techniques have been developed for the management of this condition. The lingual flap is one of the most popular treatments. In spite of the excellent vascularity of the tongue, it must be handled carefully during the procedure to assure the viability of the flap. For this reason we suggest the use of an acrylic slide in the shape of horse-shoe that improves the stability and immobilises the tongue during the surgery. This makes the procedure easier and helps to avoid mistakes during the design and the raising of the flap(AU)

Tolerabilidad de la inhalación de dos soluciones salinas hipertónicas en pacientes con fibrosis quística / Tolerance of two inhaled hypertonic saline solutions in patients with cystic fibrosis

Fundamento y objetivo: El propósito del trabajo fue estudiar la tolerabilidad de dos soluciones salinas hipertónicas (SSH) en pacientes con fibrosis quística (FQ).Pacientes y método: Se estudiaron 81 pacientes con FQ (44 varones, edad media 23,63 años). Los pacientes inhalaron 5ml de una SSH al 7%. Los que no la toleraron inhalaron, al menos 24 horas después, 5ml de una SSH al 7% con ácido hialurónico al 0,1%.Resultados: Veintiún pacientes (26%) no toleraron la SSH inmediatamente tras su inhalación. La tos fue la causa más frecuente de no tolerancia. Los mayores de 18 años y los que tenían peor función pulmonar toleraron la SSH peor. El 81% de los pacientes que no toleraron la SSH toleraron bien la SSH con hialurónico. Conclusiones: Bastantes pacientes con FQ no toleran la inhalación de la SSH inmediatamente tras su nebulización. Los mayores de 18 años y los que tienen peor función pulmonar la toleraron peor. El ácido hialurónico añadido a la SSH minimiza los efectos secundarios de ésta (AU)

Background and objective: The aim of our study was to evaluate the tolerance of two inhaled hypertonic saline solutions (HS) in patients with cystic fibrosis. Patients and method: Eighty one cystic fibrosis (CF) patients (44 males; mean age 23.63years) inhaled 5ml of 7% inhaled HS solution and, in those patients who did not tolerate HS, we evaluated the tolerance of a 7% HS (at dose of 5ml) added to 0.1% hyaluronic acid at least twenty-four hours later. Results: Twenty one (26%) patients did not tolerate the HS solution immediately after its inhalation. Cough was the most common symptom. Patients over 18years of age showed worse tolerance to HS than patients younger than 18years of age. Those patients that did not tolerate HS had a worse lung function that the ones that showed good tolerance. Eighty-one percent of patients who did not tolerate the HS alone tolerated well the HS with hyaluronic acid. Conclusions: CF patients cannot tolerate inhaled HS immediately after nebulisation. Patients over 18years and those with worse lung function tolerate HS worst. Hyaluronate acid added to 7% HS solution improves the tolerability (AU)

Correlation between cytokine levels in nasal fluid and eosinophil counts in nasal polyp tissue in asthmatic and non-asthmatic patients

Background/ Aims: Concentrations of mediators in nasal secretions could reflect the inflammatory status of the nasal mucosa and evolution of sinus disease. So, the aim of our study was to evaluate local immune reaction by measuring crucial Th1, Th2 and inflammatory cytokines innasal fluid samples of patients with nasal polyps (NP), and to correlate them to clinical, radiological findings and to the degree of eosinophil infiltration of polyp tissue. Therefore, in our study we compared the cytokine levels in nasal fluid of asthmatic and non-asthmatic patients with nasal polyposis, the eosinophil counts in NP tissues of these patients, and we correlated cytokine levels with eosinophil counts in NP tissue specimens. Material and methods: Thirty patients with nasal polyposis (NP) (15 asthmatic and 15 non asthmatic) were included in this prospective study. Nasal secretion samples were collected from nasal cavities of all subjects. The levels of 11 cytokines (TNF- , TNF- , IL-1 , IL-2, IL-4,IL-5, IL-6, IL-8, IL-10, IL-12, and IFN- ) were measured using commercial flow cytometric kit. Eosinophils were counted in haematoxylin-and-eosin-stained NP sections. Results: The concentrations of Th2 cytokines IL-5, IL-6, IL-10, and Th1 cytokine IFN- were significantly higher in patients with NP and asthma compared with non-asthmatic subjects. A positive correlation was found between IL-6 and TNF- levels in nasal fluid and eosinophil counts in polyp tissue in non-asthmatic subjects. In asthmatic NP patients, we found positive correlation between level of IL-6 and eosinophil counts and negative correlation between IFN- level and number of eosinophils in NP tissue specimens. Conclusion: Our results showed that these patients with similar clinical findings had significantly different mediator profiles in their nasal secretions, implying clear differences in pathogenesis of their NP (AU)

Quiste nasolabial: reporte de un caso y revisión de la literatura / Nasolabial cyst: a case report and review of the literature

El quiste nasolabial es un raro quiste no odontogénico, su origen embriológico es poco claro. Son lesiones decrecimiento extraóseo, que se presentan como una tumefacción que eleva el ala nasal, indoloro, desplazable y fluctuante. Se localiza en la apófisis alveolar cercana a la base del ala de la nariz. El tratamiento consiste en la enucleación quirúrgica de la lesión. En este artículo se presenta un caso de quiste nasolabial, que acomete a una paciente de sexo femenino de 51 años de edad, de la cual se discuten los datos clínicos, aspectos diagnósticos, imagenológicos, histopatológicos, así como su tratamiento (AU)

The nasolabial cyst is a rare nonodontogenic cyst with its embryological origin little clear. They are extraosseous lesions with growth that appears like a swelling that lifts the nasal wing, painless, sliding and fluctuating. It is located in the alveolar apophysis near the base of the wing of the nose. The treatment consists of surgical enucleating of the lesion. This article presents a case of nasolabial cyst in a female patient of 46 years age, describing clinical, diagnostic, imaging, and histopathological aspects as well as the treatment employed (AU)

Effects of saliva and nasal secretion on some physical properties off our different resin materials

Objective: Aim of this study was to evaluate possible effects of saliva and nasal secretion on some physical properties,such as sorption, solubility, surface hardness and colour change on four different resin-based materials overa certain time period.Materials and Methods: A total of 128 disc-shaped specimens with a diameter of 50mm and thickness of 0.5mm were tested to evaluate sorption and solubility (ISO-1567). The specimens were stored in different solutions prior to testing. Surface hardness measurements were performed by using a Vickers hardness testing machine. A total of 20 cylinder shaped test specimens with a diameter of 13 mm and thickness of 1 mm were prepared to evaluate colour change (ÄE).Analysis of variance was used to determine significant differences among groups. Paired t and Tukey Post-Hoc tests were performed to investigate significant differences among subgroups at all time intervals (p<0.05).Results: It was found that while the percentage absorption value at T7(7 days) of the auto-polymerizing (A) groups storaged in artificial saliva + nasal secretion were the highest (0.057±0.119), the percentage absorption value atT15(15 days) of the D groups storaged in artificial nasal secretion were the lowest (0.013±0.09). Besides, it was found that the percentage solubility value at T30(30 days) of visible ligth-cusing resin (VLC) groups storaged inartificial nasal secretion were the highest (0.016±0.003), and the percentage solubility value at T1(1 day) of the Dgroups storaged in distilled water were the lowest (0.01±0.02). While (..) (AU)

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Down-regulation of endogenous hydrogen sulphide pathway in nasal mucosa of allergic rhinitis in guinea pigs

Background The present study was designed to explore the possible changes in endogenous hydrogen sulphide (H2S), a novel gasotransmitter, on the pathogenesis of allergic rhinitis (AR). Methods AR guinea pig model was established by nasal ovalbumin sensitisation. Guinea pigs were divided into four groups: Saline control, AR sensitised, sodium hydrosulphide (NaHS) treated, and propargylglycine (PPG) treated group. The frequency of sneezing and nose rubbing was recorded. Leukocyte infiltration in nasal lavage fluid (NLF) and plasma H2S level were measured. Expression of Cystathionine-â-synthase (CBS) and Cystathionine-ã-lyase (CSE) mRNA as H2S-producing enzymes in nasal mucosa was determined by real time Reverse Transcriptase-Polymerase Chain Reaction (RT-PCR). Results The frequency of sneezing and nose rubbing, and levels of leukocyte infiltration in NLF were higher than those of control (P<0.01), but plasma H2S in sensitised guinea pigs was lower than those of control (P<0.05). From the results of RT-PCR, it was found that the expression of CSE was higher than CBS in nasal mucosa, and in sensitised guinea pigs it was lower than that of control (P<0.05). NaHS successfully increased the level of H2S and alleviated the symptoms of AR accompanied by up-regulation of CSE as compared with AR group (P<0.05). PPG significantly suppressed the expression of CSE and decreased the H2S level, yet also aggravated the symptoms of AR. Conclusion H2S level may be negatively correlated with the process of inflammation and positively correlated with expression of CSE in nasal mucosa. The endogenous H2S pathway is down-regulated in AR (AU)

Chronic hyperbaric oxygen therapy causes only minor ultrastructural changes in the human nasal epithelium

Hyperbaric oxygen (HBO) therapy is becoming increasingly popular in the treatment of several pathologies, namely in vascular diseases. It is generally considered to be innocuous, with few restrictions. Thus, patients subjected to HBO therapy breath saturated oxygen at an elevated pressure. Since the respiratory mucosa comes into contact with this altered inhaled air, we decided to use light and electron microscopy to investigate whether chronic HBO therapy causes significant changes in the nasal mucosa. For this, we obtained biopsies of the anterior portion of the lower nasal turbinate from two groups of 9 individuals under direct visual inspection. The first group had a diagnosis of tinnitus and was subjected to 15 sessions of 100 min-long HBO treatments, and the latter group comprised healthy volunteers not subjected to HBO therapy. The samples were processed for light and electron microscopy. We found that the turbinate mucosa of the HBO-treated group showed a moderate infiltration by leukocytes and an increase in the thickness of the epithelial basement membrane. By transmission electron microscopy (TEM), we observed that only a minority of the nasal epithelial cells presented alterations due to the HBO treatment; these alterations were focal and restricted to cilia. We conclude that chronic HBO treatment induces only minor alterations in the nasal mucosa and that these are likely to be reversible when treatment is discontinued (AU)

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