Rabies virus isolated from insectivorous bats induces different inflammatory responses in experimental model.

Rabies virus (RABV) is a neurotropic virus that causes fatal neuroinflammation in mammals. The insectivorous bat RABV strains are less pathogenic for mice than strains associated with other reservoirs. We characterized the tissue inflammatory response in the CNS of RABV isolated from insectivorous bats. Eptesicus furinalis (EPBRV)-infected mice had a robust inflammatory response and a greater amount of IL-1ß, IL-6 and TNF-α, while Myotis nigricans (MNBRV)-infected mice showed a higher expression of IL-17 and greater activation of IFN-ß. New approaches to understand the inflammatory response to different mechanisms of action may provide insights for the development of novel therapies for rabies.

Rinofima. Desfiguración estética de la anatomía nasal / RHINOPHYMA. AESTHETIC DISFIGURATION OF THE NASAL ANATOMY

Se describen distintos aspectos del rinofima: historia, etiopatogenia, histopatología, epidemiologia, clínica, diagnósticos diferenciales, tratamientos y pronóstico. Se hace hincapié en que es una enfermedad localizada en la nariz asociada a desórdenes generales, y que repercute en las áreas psicológica y social. Se presenta un caso clínico operado con cirugía plástica. Los autores plantean una hipótesis sobre la etiopatogenia y la fisiopatología de la enfermedad; y consideran a los tratamientos de rinofima como paliativos y no curativos

Different aspects of rhinophyma were described: history, etiopathogeny, histopathology, epidemiology, clinical, differential diagnoses, treatments and prognosis. It is emphasized that it is a localized disease in the nose associated to general disorders, and that it brings psychological and social problems. We present a case operated with plastic surgery. The authors present a hypothesis about the etiopathogeny and pathophysiology of the disease and consider rhinophyma treatments as palliative and non-curative.

Rabies virus isolated from insectivorous bats induces different inflammatory responses in experimental model

Rabies virus (RABV) is a neurotropic virus that causes fatal neuroinflammation in mammals. The insectivorous bat RABV strains are less pathogenic for mice than strains associated with other reservoirs. We characterized the tissue inflammatory response in the CNS of RABV isolated from insectivorous bats. Eptesicus furinalis (EPBRV)-infected mice had a robust inflammatory response and a greater amount of IL-1β, IL-6 and TNF-α, while Myotis nigricans (MNBRV)-infected mice showed a higher expression of IL-17 and greater activation of IFN-β. New approaches to understand the inflammatory response to different mechanisms of action may provide insights for the development of novel therapies for rabies.

Rabies virus isolated from insectivorous bats induces different inflammatory responses in experimental model

Rabies virus (RABV) is a neurotropic virus that causes fatal neuroinflammation in mammals. The insectivorous bat RABV strains are less pathogenic for mice than strains associated with other reservoirs. We characterized the tissue inflammatory response in the CNS of RABV isolated from insectivorous bats. Eptesicus furinalis (EPBRV)-infected mice had a robust inflammatory response and a greater amount of IL-1β, IL-6 and TNF-α, while Myotis nigricans (MNBRV)-infected mice showed a higher expression of IL-17 and greater activation of IFN-β. New approaches to understand the inflammatory response to different mechanisms of action may provide insights for the development of novel therapies for rabies.

Metered-dose inhaler therapy with spacers: Are newborns capable of using this system correctly?

INTRODUCTION: Aerosol therapy using a metered-dose inhaler (MDI) coupled to a spacer chamber is the most widely used long-term treatment modality for chronic lung disease of prematurity. However, its use in neonates is based on data obtained from other age groups. Proper use of maintenance treatment is essential for the long-term stability of these patients. OBJECTIVE: To ascertain whether newborns are capable of generating negative pressure during the use of a spacer with face mask for aerosol therapy. PATIENTS AND METHODS: Total of 117 low-risk newborns (age 12-48 hours), with no congenital malformations or any detectable clinical symptoms, were included. Inspiratory pressure was measured with a respiratory pressure meter, at each respiratory cycle, during a 10-second period, for three sequential measurements. The meter was connected to the inner chamber of the spacer through a noncollapsible silicone tube. Suitably sized masks were used. RESULTS: Only 43 participants (36.8%) generated a negative pressure capable of opening the spacer valve, as verified by the respiratory pressure meter. In 25 patients, all three measurements were within the expected range. Weight, gestational age, and mode of delivery were in no way associated with the ability to generate a detectable negative pressure. CONCLUSION: In neonates, the MDI therapy with a spacer chamber and face mask is susceptible to failure due to the inability of most patients in this age range to generate a negative inspiratory pressure sufficient to open the spacer valve.

Oxidative stress in the bladder of men with LUTS undergoing open prostatectomy: a pilot study

ABSTRACT Purpose: This study aims to evaluate the link between preoperative parameters and oxidative stress (OS) markers in the bladder wall of men undergoing open prostatectomy. Materials and Methods: From July 2014 to August 2016, men aged ≥ 50 years and presenting with LUTS were prospectively enrolled. Preoperative assessment included validated questionnaires (IPSS and OAB - V8), lower urinary tract ultrasound and urodynamics. Bladder biopsies were taken during open prostatectomy for determination of OS markers. Increased OS was defined by increased concentration of malondialdehyde (MDA) and / or decreased concentration of antioxidant enzymes (superoxide dismutase and / or catalase). P<0.05 was regarded as statistically significant. Results: Thirty - eight consecutive patients were included. Mean age was 66.36 ± 6.44 years, mean prostate volume was 77.7 ± 20.63 cm3, and mean IPSS was 11.05 ± 8.72 points. MDA concentration was increased in men with severe bladder outlet obstruction (BOO grade V - VI according to the Schaefer's nomogram) in comparison with BOO grade III - IV (p = 0.022). Patients with severe LUTS also had higher MDA concentration when compared to those with mild LUTS (p = 0.031). There was a statistically significant association between increased post - void residual urine (cut off ≥ 50 mL) and not only higher levels of MDA, but also reduced activity of SOD and catalase (p < 0.05). Conclusions: This pilot study showed that severity of LUTS and BOO were associated with increased MDA concentration in the bladder wall of men undergoing open prostatectomy. Further studies are still needed to assess the role of non - invasive biomarkers of OS in predicting bladder dysfunction in men with LUTS.

Oxidative stress in the bladder of men with LUTS undergoing open prostatectomy: a pilot study.

PURPOSE: This study aims to evaluate the link between preoperative parameters and oxidative stress (OS) markers in the bladder wall of men undergoing open prostatectomy. MATERIALS AND METHODS: From July 2014 to August 2016, men aged ≥ 50 years and presenting with LUTS were prospectively enrolled. Preoperative assessment included validated questionnaires (IPSS and OAB - V8), lower urinary tract ultrasound and urodynamics. Bladder biopsies were taken during open prostatectomy for determination of OS markers. Increased OS was defined by increased concentration of malondialdehyde (MDA) and / or decreased concentration of antioxidant enzymes (superoxide dismutase and / or catalase). P<0.05 was regarded as statistically significant. RESULTS: Thirty - eight consecutive patients were included. Mean age was 66.36 ± 6.44 years, mean prostate volume was 77.7 ± 20.63 cm3, and mean IPSS was 11.05 ± 8.72 points. MDA concentration was increased in men with severe bladder outlet obstruction (BOO grade V - VI according to the Schaefer's nomogram) in comparison with BOO grade III - IV (p = 0.022). Patients with severe LUTS also had higher MDA concentration when compared to those with mild LUTS (p = 0.031). There was a statistically significant association between increased post - void residual urine (cut off ≥ 50 mL) and not only higher levels of MDA, but also reduced activity of SOD and catalase (p < 0.05). CONCLUSIONS: This pilot study showed that severity of LUTS and BOO were associated with increased MDA concentration in the bladder wall of men undergoing open prostatectomy. Further studies are still needed to assess the role of non - invasive biomarkers of OS in predicting bladder dysfunction in men with LUTS.

Resistance training and L-arginine supplementation are determinant in genomic stability, cardiac contractility and muscle mass development in rats.

L-arginine supplementation has been related to increased maximum strength and improvement of hemodynamic parameters in several diseases. The aim of our study was to evaluate the effect of L-arginine supplementation and resistance training on muscle mass, hemodynamic function and DNA damage in healthy rats subjected to a low-arginine concentration diet. Twenty three Wistar rats (290-320g) were divided into 4 groups: Sedentary (SED-Arg, n = 6), Sedentary+Arg (SED+Arg, n = 6), Resistance Training (RT-Arg, n = 5), Resistance Training+Arg (RT+Arg, n = 6). Trained animals performed resistance training protocol in a squat apparatus adapted for rats (4 sets of 10-12 repetitions, 90s of interval, 4x/week, 65-75% of One Maximum Repetition, for 8 weeks). Comet assay was performed to measure DNA damage in leukocytes. The resistance training induced higher muscle mass in trained groups. The L-arginine supplementation increased both gastrocnemius and left ventricle to body mass ratio and increased left ventricle contractility without changing hemodynamic variables. The SED+Arg group showed higher concentration of extracellular heat shock protein 72 (eHSP72) and total testosterone, as well as lower uric acid concentration in blood versus SED-Arg group. The administration of isolated L-arginine supplementation and its association with resistance training promoted less damage in leukocytes DNA. In conclusion, the L-arginine supplementation showed synergistic effect with resistance training regarding leukocyte genomic stability in a low-L-arginine diet scenario.

Collagen content in the bladder of men with LUTS undergoing open prostatectomy: A pilot study.

AIMS: To evaluate the collagen content in the bladder wall of men undergoing open prostate surgery. METHODS: From July 2014 to August 2016, men aged ≥ 50 years, presenting LUTS and undergoing open prostate surgery due to benign prostatic enlargement (BPE) or prostate cancer were prospectively enrolled. Preoperative assessment included validated questionnaires (IPSS and OAB-V8), lower urinary tract ultrasound, and urodynamics. Bladder biopsies were obtained during open prostatectomy for determination of collagen content (sirius red-picric acid stain; polarized light analysis). Collagen to smooth muscle ratio (C/M) in the detrusor was measured and its relationship with preoperative parameters was investigated. The level of significance was P < 0.05. RESULTS: Thirty-eight consecutive patients were included in this pilot study. Mean age was 66.36 ± 6.44 years and mean IPSS was 11.05 ± 8.72 points. Men diagnosed with diabetes mellitus (DM2) were found to have higher collagen content in the bladder wall when compared to non-diabetic patients (17.71 ± 6.82% vs 12.46 ± 5.2%, respectively; P = 0.024). Reduced bladder compliance was also marker for higher collagen content (P = 0.042). Bladder outlet obstruction (BOO) was not a predictor of increased collagen deposition in the bladder wall (P = 0.75). Patients with PVR ≥ 200 mL showed a higher collagen to smooth muscle ratio in the bladder wall (P = 0.036). CONCLUSIONS: DM2 and urodynamic parameters, such as increased PVR and reduced bladder compliance, were associated with higher collagen content in the bladder wall of men with LUTS.

Testosterone replacement maintains smooth muscle content in the corpus cavernosum of orchiectomized rats.

OBJECTIVE: To evaluate the effects of testosterone (T) on the maintenance of corpus cavernosum (CC) structure and apoptosis. METHODS: Animals were divided into three groups: sham operation group (n = 8) underwent sham operation; Orchiectomized (Orchiec)+ oily vehicle group (n = 8) underwent bilateral orchiectomy and received a single dose of oily vehicle by intramuscular injection (i.m.) 30 days after orchiectomy; and Orchiec + T group (n = 8) underwent bilateral orchiectomy and received a single dose of T undecanoate 100 mg/kg i.m. 30 days after the surgery. Animals were euthanized 60 days after the beginning of the experiment with an anesthetic overdose of ketamine and xylazine. Blood samples and penile tissue were collected on euthanasia. Azan's trichrome staining was used to evaluate smooth muscle, Weigert's Fucsin-Resorcin staining was used to evaluate elastic fibers and Picrosirius red staining was used to evaluate collagen. Apoptosis was evaluated using TUNEL technique. RESULTS: T levels decreased in Orchiec + oily vehicle when compared to sham operation and Orchiec + T groups (p < 0.001). T deprivation reduced trabecular smooth muscle content and penile diameter and T replacement maintained both parameters (p = 0.005 and p = 0.001, respectively). No difference was observed in the content of sinusoidal space (p = 0.207), elastic fibers (p = 0.849), collagen (p = 0.216) and in apoptosis (p = 0.095). CONCLUSION: Normal testosterone levels maintain CC smooth muscle content and do not influence elastic fibers, collagen content and apoptotic index. Further studies should be performed in order to investigate the mechanisms by which androgen mediates its effects on CC structure.

Esplenectomía Laparoscópica: Experiencia inicial / Laparoscopic Splenectomy. Initial Experience

Introducción: La esplenectomía laparoscópica se ha convertido en la técnica Gold Standard para la patología benigna del bazo. Debido a la posición anatómica, fragilidad y gran riego sanguíneo del bazo este procedimiento requiere un equipo con formación en cirugía laparoscópica de avanzada. Objetivos: Presentación de la experiencia inicial en esplenectomía laparoscópica realizada en un sistema médico asistencial cerrado por un equipo entrenado en cirugía laparoscópica de avanzada. Lugar de aplicación: Diseño: Retrospectivo, observacional, de corte transversal. Población: 6 esplenectomías laparoscópicas programadas realizadas entre agosto de 2010 y junio de 2012. Material y métodos: Se realizaron 6 esplenectomías laparoscópicas entre agosto de 2010 y junio de 2012. La vía de abordaje fue laparoscópica con 3 trócares. Resultados: En todos los casos se usaron 3 puertos de trabajo, no requiriendo conversión a cirugía abierta. En 2 casos se utilizó morcelación del bazo y en 4 se amplió la incisión umbilical para extraer la pieza. Conclusiones: La esplenectomía laparoscópica es una técnica segura y efectiva, en nuestra casuística ningún paciente requirió convertir la técnica a cirugía abierta y no tuvimos morbilidad. Debe ser realizada por un equipo con experiencia en cirugía laparoscópica de avanzada.

Background: Laparoscopic splenectomy has becom e the gold standard for benign splenic disease. Due to its anatomical position, fragility and blood supply this procedure requires a trained laparoscopic teamObjective: Presentation of the initial experience in laparoscopic splenectomy performed in a medical care closed system by atrained laparoscopic team. Setting: Division of General Surgery.Policlínico del Docente. Design:Retrospective, observational, cros-sectional study.Population: 6 laparoscopic splenectomy scheduled betweenAugust 2010 and June 2012. Methods:We’ve performed 6 laparoscopic splenectomy between August 2010 and June 2012. The surgical approach waslaparoscopic with 3 trocars. Results: In all cases we used three working ports, not requiring conversion to traditional open surgery. In 2 cases we used morcellation of the spleen and in 4 umbilical incision wasextended to remove the piece.Conclusions:Laparoscopic splenectomy is a safe and effective,none of our patients required convertion to traditional open surgery and had no morbidity. Must be performed by a trained laparoscopic team.

Imagen calcificada y dolor en hipocondrito derecho / Calcified image and pain in the right hypochondrium

Introducción: El cáncer de vesícula ocupa el 5° lugar de aparición de todos cánceres digestivos. En nuestro país es dos veces más frecuente que los tumores ubicados en la vía biliar principal intra o extrahepática. Objetivos: Reporte de caso y revisión bibliográfica. Reporte de Caso: Mujer de 52 años, sin antecedentes clínicos de relevancia, que consulta por dolor abdominal, náuseas y vómitos de 14 días de evolución. Se realiza una ecografía que evidencia engrosamiento parietal y litiasis vesicular. En el intraoperatorio se evidencia Vesícula en Porcelana con infiltración hepática a nivel del fondo.Discusión: Destacar la importancia de una correcta interpretación de las imágenes, a los fines de tomar la conducta que mayor beneficio representa para el paciente.

Introduction: Gallbladder cancer occupies the 5th place of occurrence among all digestive system cancers. In our country, it is twice more frequent than tumors of the intra or extrahepatic principal biliary tract. Objectives: Case report and literature review. Case Report: 52-year-old woman, with no relevant clinical history, with 14 days of abdominal pain, nausea and vomit. The ultrasound scan reveals parietal thickening and gallstones. During intrasurgical exploration, porcelain gallbladder is found, with hepatic infiltration at fundus. Discussion: To highlight the importance of a correct image interpretation, in order to choose the most beneficial treatment for the patient.

Esplenectomía Laparoscópica: Experiencia inicial / Laparoscopic Splenectomy. Initial Experience

Introducción: La esplenectomía laparoscópica se ha convertido en la técnica Gold Standard para la patología benigna del bazo. Debido a la posición anatómica, fragilidad y gran riego sanguíneo del bazo este procedimiento requiere un equipo con formación en cirugía laparoscópica de avanzada. Objetivos: Presentación de la experiencia inicial en esplenectomía laparoscópica realizada en un sistema médico asistencial cerrado por un equipo entrenado en cirugía laparoscópica de avanzada. Lugar de aplicación: Diseño: Retrospectivo, observacional, de corte transversal. Población: 6 esplenectomías laparoscópicas programadas realizadas entre agosto de 2010 y junio de 2012. Material y métodos: Se realizaron 6 esplenectomías laparoscópicas entre agosto de 2010 y junio de 2012. La vía de abordaje fue laparoscópica con 3 trócares. Resultados: En todos los casos se usaron 3 puertos de trabajo, no requiriendo conversión a cirugía abierta. En 2 casos se utilizó morcelación del bazo y en 4 se amplió la incisión umbilical para extraer la pieza. Conclusiones: La esplenectomía laparoscópica es una técnica segura y efectiva, en nuestra casuística ningún paciente requirió convertir la técnica a cirugía abierta y no tuvimos morbilidad. Debe ser realizada por un equipo con experiencia en cirugía laparoscópica de avanzada. (AU)

Background: Laparoscopic splenectomy has becom e the gold standard for benign splenic disease. Due to its anatomical position, fragility and blood supply this procedure requires a trained laparoscopic teamObjective: Presentation of the initial experience in laparoscopic splenectomy performed in a medical care closed system by atrained laparoscopic team. Setting: Division of General Surgery.Policlínico del Docente. Design:Retrospective, observational, cros-sectional study.Population: 6 laparoscopic splenectomy scheduled betweenAugust 2010 and June 2012. Methods:WeÆve performed 6 laparoscopic splenectomy between August 2010 and June 2012. The surgical approach waslaparoscopic with 3 trocars. Results: In all cases we used three working ports, not requiring conversion to traditional open surgery. In 2 cases we used morcellation of the spleen and in 4 umbilical incision wasextended to remove the piece.Conclusions:Laparoscopic splenectomy is a safe and effective,none of our patients required convertion to traditional open surgery and had no morbidity. Must be performed by a trained laparoscopic team. (AU)

Imagen calcificada y dolor en hipocondrito derecho / Calcified image and pain in the right hypochondrium

Introducción: El cáncer de vesícula ocupa el 5° lugar de aparición de todos cánceres digestivos. En nuestro país es dos veces más frecuente que los tumores ubicados en la vía biliar principal intra o extrahepática. Objetivos: Reporte de caso y revisión bibliográfica. Reporte de Caso: Mujer de 52 años, sin antecedentes clínicos de relevancia, que consulta por dolor abdominal, náuseas y vómitos de 14 días de evolución. Se realiza una ecografía que evidencia engrosamiento parietal y litiasis vesicular. En el intraoperatorio se evidencia Vesícula en Porcelana con infiltración hepática a nivel del fondo.Discusión: Destacar la importancia de una correcta interpretación de las imágenes, a los fines de tomar la conducta que mayor beneficio representa para el paciente. (AU)

Introduction: Gallbladder cancer occupies the 5th place of occurrence among all digestive system cancers. In our country, it is twice more frequent than tumors of the intra or extrahepatic principal biliary tract. Objectives: Case report and literature review. Case Report: 52-year-old woman, with no relevant clinical history, with 14 days of abdominal pain, nausea and vomit. The ultrasound scan reveals parietal thickening and gallstones. During intrasurgical exploration, porcelain gallbladder is found, with hepatic infiltration at fundus. Discussion: To highlight the importance of a correct image interpretation, in order to choose the most beneficial treatment for the patient. (AU)