Abstract This study evaluated the effects of supplying altrenogest from day 6-12 of pregnancy on the endometrial glandular epithelium, corpora lutea (CL) morphology, and endometrial and CL gene expression. A total of 12 crossbred females (Landrace × Large White) were used. The females were assigned to 4 treatments according to a random design with a 2 × 2 factorial arrangement, with two categories (sow or gilt) and two treatments (non-treated and treated with altrenogest). On day 6 of pregnancy, animals were allocated to one of the following groups: non-treated (NT, n = 6; 3 sows and 3 gilts), and (T, n = 6; 3 sows and 3 gilts) treated daily with 20 mg of altrenogest, from day 6-12 of pregnancy. All animals were euthanized on day 13 of pregnancy. All CLs were individually weighed, and their volume were determined. The endometrial glandular density (GD), mean glandular area (MGA), and vascular density (VD) were determined by histomorphometric and immunohistochemical analyses. Endometrium samples were collected and analyzed by qRT-PCR to evaluate the abundance of transcripts for VEGF and IGF-I. Females in the T group had higher MGA (P < 0.05) compared to the NT group. There was no effect of treatment on GD or VD for both experimental groups. Sows in the T group had augmented expression of IGF-I (P < 0.05). Progestagen had no detrimental effect on CL morphology. In conclusion, altrenogest improves the uterine environment during the peri-implantation period in pigs without compromising corpora lutea development.

Background: Over the past 30 years, new liver transplant programs have emerged as a response to the increasing use of this therapy to treat irreversible liver failure. Objective: the aim of this presentation is to describe the organization, development and initial results of a Liver Transplant Program in Mar del Plata. Material and methods: A team of professionals trained in liver transplantation was created, with specialists in surgery, anesthesiology, intensive care, hepatology, hemotherapy, hematology, and registered nurses and nurse scrubs granted by regulatory agencies. Building alterations, and technical and adaptations were implemented. Thirtytwo transplantations were performed with complete cadaveric donor in patients from neighboring localities (55%) and from Mar del Plata (45%). The most common etiologies of cirrhosis were chronic hepatitis C virus infection and alcohol abuse. Results: Operative mortality was 12.5%. Actuarial survival at 55 months of the 32 recipients was 75%. Six bile drug strictures late postoperative period which were treated successfully trated with a conservative approach Conclusions: the Liver Transplant Program in Mar del Plata provides care to the geographic area of the southeast of the province of Buenos Aires. The initial results are consistent with those expected for the current standards in liver transplantation.

Antecedentes: en los últimos 30 años, la creación de nuevos programas de trasplante hepático ha respondido a la difusión de esta terapéutica para el tratamiento de la insuficiencia hepática irreversible. Objetivo: describir la organización y el desarrollo de un Programa de Trasplante Hepático en una institución sanatorial de Mar del Plata, y sus resultados iniciales. Material y método: se constituyó un equipo profesional con especialistas en trasplante hepático en las disciplinas: cirugía, anestesia, terapia intensiva, hepatología, instrumentación, enfermería, hemoterapia y hematología, que se acreditaron ante los organismos fiscalizadores. La institución fue adecuada edilicia y tecnológicamente para este tipo de emprendimiento. Se trasplantaron con donante cadavérico completo 32 pacientes de localidades vecinas (55%) y de Mar del Plata (45%). Las etiologías más frecuentes de la cirrosis fueron hepatitis C y abuso de alcohol. Resultados: la mortalidad operatoria fue 12,5%. La supervivencia actuarial de los trasplantados fue 75% a los 55 meses. Seis pacientes desarrollaron de inmediato estenosis biliares , que fueron tratadas satisfactoriamente en forma conservadora. Conclusiones: el Programa de Trasplante Hepático de Mar del Plata asiste al área geográfica del sudeste de la provincia de Buenos Aires. Los resultados iniciales alcanzados encuadran en lo esperable para los estándares actuales en la materia.

Background: although benign strictures of the bile duct (BSBD) have traditonally been treated by constructon of a surgical biliodigestive anastomosis at present, there is a clear tendency to resolve them in a minimally invasive way (endoscopic or percutaneous or both). Objective: to describe the management and Results of percutaneous and / or endoscopic treatment of BSBD. Materials and methods: study period: January 2009 to June 2015. Etology of BSBD, 8 surgical injury to the bile duct (BDI), 5 liver transplantis (LT), 5 liver hydatidosis (LH), 2 choledochal cystis (CC). As an average, 4 procedures per patent were done (range, 1-11); and 3 stentis were placed (range, 1-5). Average and median follow up were 21 months, and 13 months, respectively. Results: mortality related to the procedure was 0%. Morbidity was 35% (bacteremia, cholangitis, gas-trointestinal bleeding, febrile syndrome, mild hemoperitoneum, and sepsis). 19 patentis (95%) had satisfactory outicome; one patentis (5%) developed a re-stricture that required a new procedure. Conclusions: mininmally invasive treatment can achieve satisfactory Results in a high percentage of patentis with benign stricture of the bile duct.

Antecedentes: las estenosis benignas de la vía biliar (EBVB) tradicionalmente han sido tratadas con derivaciones biliodigestivas. En la actualidad existe una clara tendencia para resolverlas en forma mínimamente invasiva (endoscópica o percutánea o de ambos modos). Objetivo: describir el manejo y los resultados del tratamiento percutáneo y/o endoscópico de las estenosis biliares benignas. Material y métodos: período del estudio: enero de 2009 a junio de 2015. Etología de las EBVB: 8 lesiones quirúrgicas de la vía biliar (LQVB), 5 trasplantes hepáticos (TH), 5 hidatidosis hepáticas (HH), 2 quistes de colédoco (QC). Se realizaron 4 procedimientos promedio por paciente (r. 1-11). Se colocaron 3 stentis (endoprótesis) promedio por paciente (r. 1-5). Seguimiento promedio: 21 meses con una mediana de 13 meses. Resultados: mortalidad relacionada con los procedimientos: 0%. Morbilidad relacionada con los procedimientos: 35% (bacteriemia, colangitis, hemorragia digestiva, síndrome febril, hemoperitoneo leve, sepsis). Diecinueve pacientes (95%) evolucionaron con control satisfactorio de la estenosis; un paciente (5%) presentó recidiva de la estenosis y debió ser tratado nuevamente. Conclusiones: el tratamiento mininvasivo puede lograr resultados satisfactorios en un alto porcentaje de pacientes con estenosis benignas de la vía biliar.

OBJETIVOS: Avaliar a prevalência de anemia entre os pré-escolares da rede pública de Ilhabela (SP) e a resposta ao tratamento instituído. MÉTODOS: Estudo com 667 pré-escolares, entre 2007 e 2008. As crianças foram avaliadas na escola quanto ao peso, estatura e concentração de hemoglobina. As anêmicas foram tratadas com sulfato ferroso por 12 semanas, com uma consulta intermediária e outra ao final. RESULTADOS: A prevalência de anemia foi de 25,6% (170 crianças). A concentração de hemoglobina mais baixa foi de 9,5 g/dL. A maior prevalência de anemia (36%) ocorreu em crianças de 60 a 65 meses de idade. A mediana da concentração de hemoglobina evoluiu de 10,5 g/dL para 11,8 g/dL ao final do tratamento, recuperando 76% das crianças. CONCLUSÃO: A identificação de crianças anêmicas nas escolas, o pronto tratamento da anemia e o acompanhamento durante o tratamento mostrou ser estratégia eficaz no combate a esse importante problema de saúde pública.

OBJECTIVES: To assess the prevalence of anemia among children attending public preschools in Ilhabela, state of São Paulo, Brazil, and their response to a treatment regimen. METHODS: Between 2007 and 2008, the weight, height, and hemoglobin levels of 667 children were measured in the school setting. Anemic children were prescribed a 12-week course of ferrous sulfate, and follow-up assessment visits were scheduled for halfway through this course and the end of treatment. RESULTS: The prevalence of anemia was 25.6% (N = 170). The lowest hemoglobin level measured was 9.5 g/dL. Anemia was most prevalent (36%) in children between the ages of 60 and 65 months. Median hemoglobin levels rose to 11.8 g/dL from 10.5 g/dL after treatment; 76% of children recovered from anemia. CONCLUSION: Screening for anemia in the school setting and prompt therapy, including mid-treatment follow-up, proved to be an effective strategy for facing this major public health issue.

Endovascular treatment of the abdominal aortic aneurysm is consider an alternative to open surgery for high risk patients. Its goal is to exclude the aneurysm from the circulation by using an endoprothesis introduced from a femoral approach. Patients must be strictly selected to avoid possible complications. The most frequent limitation is related to anatomic contraindications such as visceral arteries involved in the aneurysm. Fenestrated endograft have been recently developed to allow endovascular treatment when anatomic features contraindicate classic endovascular procedures. Fenestrated endograft have holes that match with the origin of the visceral arteries maintaining its potency. In this paper we report the endovascular treatment of an abdominal aortic aneurysm by using a fenestrated endoprothesis in a patient whose left renal artery is originated from the aneurysm.

El tratamiento endovascular de los aneurismas de aorta abdominal es una alternativa a la cirugía abierta para pacientes de alto riesgo. Consiste en la exclusión del saco aneurismático mediante la interposición de una endoprótesis colocada por vía femoral. El tratamiento endovascular no puede ser utilizado en todos los pacientes. Una limitación frecuente la constituye el nacimiento de una arteria visceral desde el saco aneurismático. Para contrarrestar esta limitación recientemente se han desarrollado endoprótesis fenestradas que presentan orificios que se corresponden con el nacimiento de las arterias involucradas en el aneurisma evitando su oclusión, permitiendo de esta manera el tratamiento endovascular. En esta comunicación se presenta un caso de tratamiento endovascular de un aneurisma de aorta abdominal mediante la colocación de una endoprótesis fenestrada en un paciente cuya arteria renal izquierda nacía directamente del saco aneurismático.

Background Aortic valve disease is one of the most frequent causes of valve replacement in our environment. This study was performed based on the lack of information related to late outcomes in patients submitted to aortic valve replacement with mechanical prosthesis. Objective To assess the mortality, morbidity (major complications) and functional outcomes (clinical improvement) during the follow- up of patients with mechanical prosthesis placed in the aortic position. Material and Methods Ninety five patients submitted to aortic valve replacement with mechanical prosthesis were selected. Surgeries were performed between January 1999 and December 2006. Mean follow-up was 4±2.3 years; percentiles 25-75: 2.5-6.3 years. Total follow-up was 427.5 patients/year. Results Mean age was 64.5±12.3 years, 61.1% were men. Sixty patients (63%) were in functional class (FC) III-IV prior to surgery. During follow-up, 67 patients (70.5%) were en FC I and 28 (29.5%) in FC II. No patients presented FC III or IV. Mean effective valve area/body surface area was 1.06 cm²/m². Actuarial survival (Kaplan-Meier) was 95% (95% CI 88-98%) at one year and 89% at 5 years (95% CI 76-95%). Nine deaths (9.5%) were related to this condition. The incidence of complications was as follows: thromboembolism 0.2% patient/ year, bleeding 2.3% patient/year, and endocarditis 0.7% patient/ year. Re-operation rate was 0.4% patient/year. Conclusions These results were similar to those reported in international series in terms of survival and major complications. The number of adverse events observed at mid-term is still high, as it is all around the world.

Introducción La patología de la válvula aórtica es una de las causas más frecuentes de reemplazo valvular en nuestro medio. La falta de información actualizada sobre la evolución alejada de pacientes que recibieron prótesis mecánicas en posición aórtica motivó la realización del presente estudio. Objetivo Conocer la mortalidad, la morbilidad (complicaciones mayores) y los resultados funcionales (mejoría clínica) durante el seguimiento de pacientes portadores de una válvula mecánica en posición aórtica. Material y métodos Se seleccionaron 95 pacientes sometidos a reemplazo valvular aórtico con prótesis mecánicas. Todos los pacientes fueron operados entre enero de 1999 y diciembre de 2006. La media de seguimiento fue de 4,5 ± 2,3 años, percentiles 25-75: 2,5-6,3 años. El seguimiento total fue de 427,5 pacientes/año. Resultados La media de edad fue de 64,5 ± 12,3 años y el 61,1% de los pacientes eran de sexo masculino. Sesenta pacientes (63%) estaban en clase funcional (CF) III-IV antes de la cirugía. En el seguimiento, 67 pacientes (70,5%) se encuentran en CF I y 28 (29,5%) en CF II. No se observaron pacientes en CF III ni IV. La media del índice área valvular efectiva / área de superficie corporal fue de 1,06 cm²/m². La supervivencia actuarial (Kaplan-Meier) fue del 95% (IC 95% 88-98%) a un año y del 89% a los 5 años (IC 95% 76-95%). La mortalidad relacionada se registró en 9 pacientes (9,5%). La incidencia de tromboembolia fue del 0,2% paciente-año, la de hemorragia del 2,3% paciente- año y la de endocarditis del 0,7% paciente-año. La tasa de reoperación fue del 0,4% paciente-año. Conclusiones Los resultados obtenidos fueron similares a los comunicados en series internacionales en términos de supervivencia y complicaciones mayores. La frecuencia de eventos adversos observados a mediano plazo, como en todo el mundo, aún permanece elevada.

To analyze the genetic relatedness and phylogeographic structure of Aedes aegypti, we collected samples from 36 localities throughout the Americas (Brazil, Peru, Venezuela, Guatemala, US), three from Africa (Guinea, Senegal, Uganda), and three from Asia (Singapore, Cambodia, Tahiti). Amplification and sequencing of a fragment of the mitochondrial NADH dehydrogenase subunit 4 gene identified 20 distinct haplotypes, of which 14 are exclusive to the Americas, four to African/Asian countries, one is common to the Americas and Africa, and one to the Americas and Asia. Nested clade analysis (NCA), pairwise distribution, statistical parsimony, and maximum parsimony analyses were used to infer evolutionary and historic processes, and to estimate phylogenetic relationships among haplotypes. Two clusters were found in all the analyses. Haplotypes clustered in the two clades were separated by eight mutational steps. Phylogeographic structure detected by the NCA was consistent with distant colonization within one clade and fragmentation followed by range expansion via long distance dispersal in the other. Three percent of nucleotide divergence between these two clades is suggestive of a gene pool division that may support the hypothesis of occurrence of two subspecies of Ae. aegypti in the Americas.