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OBJECTIVE: To estimate the effectiveness of a two dose vaccine schedule (mRNA-1273, BNT162b2, and BBIBP-CorV) against SARS-CoV-2 infection and covid-19 related death and short term waning of immunity in children (3-11 years old) and adolescents (12-17 years old) during periods of delta and omicron variant predominance in Argentina. DESIGN: Test negative, case-control study. SETTING: Database of the National Surveillance System and the Nominalized Federal Vaccination Registry of Argentina. PARTICIPANTS: 844 460 children and adolescents without previous SARS-CoV-2 infection eligible to receive primary vaccination schedule who were tested for SARS-CoV-2 by polymerase chain reaction or rapid antigen test from September 2021 to April 2022. After matching with their corresponding controls, 139 321 (60.3%) of 231 181 cases remained for analysis. EXPOSURES: Two dose mRNA-1273, BNT162b2, and BBIBP-CorV vaccination schedule. MAIN OUTCOME MEASURES: SARS-CoV-2 infection and covid-19 related death. Conditional logistic regression was used to estimate the odds of SARS-CoV-2 infection among two dose vaccinated and unvaccinated participants. Vaccine effectiveness was estimated as (1-odds ratio)×100%. RESULTS: Estimated vaccine effectiveness against SARS-CoV-2 infection was 61.2% (95% confidence interval 56.4% to 65.5%) in children and 66.8% (63.9% to 69.5%) in adolescents during the delta dominant period and 15.9% (13.2% to 18.6%) and 26.0% (23.2% to 28.8%), respectively, when omicron was dominant. Vaccine effectiveness declined over time, especially during the omicron period, from 37.6% (34.2% to 40.8%) at 15-30 days after vaccination to 2.0% (1.8% to 5.6%) after ≥60 days in children and from 55.8% (52.4% to 59.0%) to 12.4% (8.6% to 16.1%) in adolescents.Vaccine effectiveness against death related to SARS-CoV-2 infection during omicron predominance was 66.9% (6.4% to 89.8%) in children and 97.6% (81.0% to 99.7%) in adolescents. CONCLUSIONS: Vaccine effectiveness in preventing mortality remained high in children and adolescents regardless of the circulating variant. Vaccine effectiveness in preventing SARS-CoV-2 infection in the short term after vaccination was lower during omicron predominance and decreasing sharply over time. TRIAL REGISTRATION: National Registry of Health Research IS003720.

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RESUMEN Las porfirias son trastornos metabólicos hereditarios causados por deficiencias enzimáticas de la biosíntesis del grupo HEM. Con presentación en distintos grupos de edades, más común en infancia y tercera a cuarta década de la vida, se caracterizan por elevación de porfirinas, y manifestaciones variadas cutáneas y neuro viscerales. Describimos una serie de 3 casos de pacientes femeninas en tercera década de la vida con dolor abdominal severo e inespecífico y una amplia gama de manifestaciones clínicas con sus complicaciones a corto y largo plazo en quienes se diagnosticó porfiria aguda intermitente (PAI). Se hará revisión en la literatura para aportar al reconocimiento temprano de estas condiciones e instaurar de forma temprana el manejo específico e impactar en desenlaces irreversibles.

ABSTRACT Porphyrias are inherited metabolic disorders caused by enzymatic deficiencies of HEM group biosynthesis. Most common in childhood at the third and fourth decade of life. They are characterized by increased levels of porphyrins, and various cutaneous, neurological, and visceral manifestations. We describe a series of 3 cases of female patients in the third decade of life with abdominal pain and a wide range of clinical manifestations and short and long-term complications. Our review contributes to the early recognition of these diseases to establish early specific managements to impact on irreversible outcomes.

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Porphyrias are inherited metabolic disorders caused by enzymatic deficiencies of HEM group biosynthesis. Most common in childhood at the third and fourth decade of life. They are characterized by increased levels of porphyrins, and various cutaneous, neurological, and visceral manifestations. We describe a series of 3 cases of female patients in the third decade of life with abdominal pain and a wide range of clinical manifestations and short and long-term complications. Our review contributes to the early recognition of these diseases to establish early specific managements to impact on irreversible outcomes.

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Access to personal mobility is a human right and as such, it implies the provision of wheelchair services for those with mobility impairments that need one. Lack of appropriately trained personnel is a major contributor to the gap in access to wheelchairs. Assistive technology provision is one of the core competencies of occupational therapists. The goal of this study was to assess the current wheelchair provision knowledge of final year occupational therapy students in Colombia as measured by the International Society of Wheelchair Professionals Basic Wheelchair Service Knowledge Test. A total of 83 students from 7 universities took the test. None of the students met the 70% passing threshold. The highest scores were in the assessment domain while the lowest in the fitting and user training domains. These results suggest that the current wheelchair provision education received in these programs do not meet the World Health Organization guidelines on appropriate wheelchair provision. The implementation of strategies to improve current wheelchair provision education in Colombian occupational therapy programs is granted.

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Hereditary breast and ovarian cancer (HBOC) syndrome is mainly caused by mutations in the BRCA1 and BRCA2 genes. The 3'UTR region allows for the binding of microRNAs, which are involved in genetic tune regulation. We aimed to identify allelic variants on 3'UTR miRNA-binding sites in the BRCA1 and BRCA2 genes in HBOC patients. Blood samples were obtained from 50 patients with HBOC and from 50 controls. The 3'UTR regions of BRCA1 and BRCA2 were amplified by PCR and sequenced to identify genetic variants using bioinformatics tools. We detected nine polymorphisms in 3'UTR, namely: four in BRCA1 (rs3092995 (C/G), rs8176318 (C/T), rs111791349 (G/A), and rs12516 (C/T)) and five in BRCA2 (rs15869 (A/C), rs7334543 (A/G), rs1157836 (A/G), and rs75353978 (TT/del TT)). A new variant in position c.*457 (A/C) on 3'UTR of BRCA2 was also identified. The following three variants increased the risk of HBOC in the study population: rs111791349-A, rs15869-C, and c.*457-C (odds ratio (OR) range 3.7-15.4; p < 0.05). Genetic variants into the 3'UTR of BRCA1 and BRCA2 increased the risk of HBOC between 3.7-15.4 times in the study population. The presence/absence of these polymorphisms may influence the loss/creation of miRNA binding sites, such as hsa-miR-1248 in BRCA1 3'UTR or the hsa-miR-548 family binding site in BRCA2. Our results add new evidence of miRNA participation in the pathogenesis of HBOC.

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BACKGROUND/PURPOSE: Helicobacter pylori (H. pylori) infection is the most common in the world and is associated with various gastrointestinal pathologies, including chronic gastritis, peptic ulcers, and gastric cancer. The prevalence is associated with socioeconomic conditions, with this infection being more common in developing countries than in developed countries. The presence and permanence of H. pylori in the oral cavity has been reported, but its role is controversial. The aim of this study was to determine the prevalence of H. pylori in dental plaque of patients with periodontitis. MATERIALS AND METHODS: A cross-sectional study was carried out and Periodontal Screening and Recording (PSR) index was determined. 38 dental plaque samples were taken and total DNA was extracted and qPCR was performed. RESULTS: 60.5% of the samples (n = 23) were positive for the presence of H. pylori by the amplification of the 16S rRNA and vacA genes. In addition, cagA gene was detected in 21.7% (n = 5) of H. pylori-positive. A significant relationship between periodontal status and H. pylori oral infection was found (P ≤ 0.05); patients with initial and moderate periodontitis were the most affected with 39.1% and 30.4%, respectively. CONCLUSION: Our results suggest that the prevalence of H. pylori in the oral cavity could be related to the progression of periodontal disease. Therefore, oral hygiene and treatment for the elimination of oral H. pylori could stop the progression of periodontal disease.

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The enzyme myo-Inositol oxygenase (MIOX) is also termed ALDRL6. It is a kidney-specific member of the aldo-keto reductase family. MIOX catalyzes the first reaction involved in the myo-inositol metabolism signaling pathway and is fully expressed in mammalian tissues. MIOX catalyzes the oxidative cleavage of myo-Inositol and its epimer, D-chiro-Inositol to D-glucuronate. The dioxygen-dependent cleavage of the C6 and C1 bond in myo-Inositol is achieved by utilizing the Fe2+/Fe3+ binuclear iron center of MIOX. This enzyme has also been implicated in the complications of diabetes, including diabetic nephropathy. The MIOX gene was amplified with reverse transcription-polymerase chain reaction from baboon tissue samples, and the product was cloned and sequenced. MIOX expression in the baboon kidney is described in the present study. The percentages of nucleotide and amino acid similarities between baboons and humans were 95 and 96%, respectively. The MIOX protein of the baboon may be structurally identical to that of humans. Furthermore, the evolutionary changes, which have affected these sequences, have resulted from purifying forces.

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Aspergillus is an opportunistic fungus present in humid environments, whose natural environment is in soil, hay and compost. It is a frequent contaminant in the clinical laboratory. Because of this, the fungus is often inhaled, affecting those with an underlying pulmonary disease or immune deficiency. Fungal genitourinary tract infections are relatively common. A rare Aspergillus spp cervical infection diagnosed via liquid-based cytology is presented in the current study. The 57-year-old woman attended her annual check-up without any relevant medical history. The result of a gynecological examination by Papanicolaou smear was normal and routine liquid-based cytology was performed. The specimen exhibited fungal organisms characterized by septate hyphae branching at acute angles, most consistent with the Aspergillus species. Subsequent cytology demonstrated the same results. Antifungal treatment was initiated and a second post-treatment smear only exhibited atrophy. The cytomorphological features of Aspergillus spp. are discussed in the current study and a brief review of the few reported cases of a primary cervical infection in the literature is provided. In addition, the liquid-based cytology was established as a tool to diagnose the rare Aspergillus infection.

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Classrooms in Peace (Aulas en Paz) is an elementary school-based multicomponent program for prevention of aggression and promotion of peaceful relationships. Inspired by international programs and socio-emotional research, it includes (1) a classroom universal curriculum, (2) parent workshops and home visits to parents of the 10% most aggressive children, and (3) extracurricular peer groups of two aggressive and four prosocial children. Activities seek to promote socio-emotional competencies such as empathy, anger management, creative generation of alternatives, and assertiveness. A 2-year quasi-experimental evaluation was conducted with 1154 students from 55 classrooms of seven public schools located in neighborhoods with the presence of youth gangs, drug cartels, and high levels of community violence in two Colombian cities. Despite several implementation (e.g., about half of the activities were not implemented) and evaluation (e.g., randomization problems, large number of missing data, and changes between treatment and control groups) challenges, positive results were found in prosocial behavior and in reduction of aggressive behavior, according to teacher reports, and in assertiveness and reduction of verbal victimization, according to student reports. Furthermore, implementation cost (25 US dollars per student per year) was very low compared to other programs in developed countries. This study shows that the Classrooms in Peace program has an important potential to generate positive results and highlights the challenges of implementing and evaluating prevention programs in highly violent environments.

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Rosai-Dorfman disease also known as sinus histiocytosis with massive lymphadenopathy (SHML) is characterized by distorted lymph node architecture with marked dilation of lymphatic sinuses occupied by numerous lymphocytes, as well as histiocytes with vesicular nucleus and abundant clear cytoplasm with phagocytized lymphocytes or plasma cells, also known as 'emperipolesis'. This disease of unknown etiology progresses with a benign prognosis strictly and only when an early diagnosis and treatment is made. A late diagnosis and a generalized lymph node involvement contribute to a poor prognosis. In this study, we focussed on the cytological characteristics of the Rosai-Dorfman disease and differential diagnoses. We reported a case of a 61-year-old Mexican male with a 9-month history of painless bilateral cervical masses and low-grade fever with the final diagnosis of Rosai-Dorfman disease. The final diagnosis was made by fine needle aspiration (FNA) biopsy of parotid gland and cervical lymph node. In conclusion, FNA biopsy can be enough to make the diagnosis in most cases due to the distinct cytological features of SHML, thereby avoiding more invasive approaches that potentially are unnecessary.

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INTRODUCTION: Preterm birth is the most important cause of neonatal mortality and morbidity. It is a multifactorial disease with different etiologies, including genetic factors. Genetic variability is represented by single nucleotide polymorphisms (SNPs) in genes of proteins involved in the contractile activity. We determine the association between SNP 12109G> A in REN associated with preterm birth and premature rupture of membrane. MATERIALS AND METHODS: A study of cases ( N=112, 22-36 weeks of gestation; mean: 31, 95% confidence interval 30.7-32.2) and controls ( N=66; 38-40 weeks of gestation from the last menstrual period; mean: 39.8, 95% confidence interval 38.9-39.4) was performed. Genomic DNA was isolated in all patients from peripheral blood. The SNP 12109G> A ( Mbo I) in REN was typified by PCR-restriction fragment length polymorphism. RESULTS: A significant difference in the case group for the SNP 12109G>A was observed. The A allele was increased in women with preterm birth (81% cases vs. 15% control, p<0.0000004). There was also a significant difference between genotypes, mainly an excess of G/A heterozygotes in women with preterm birth (60% cases vs. 23% controls). The phenotype 12109G> A has odds ratio 6.62 (95% confidence interval 3.14-14.15), which means a high risk of preterm birth/premature rupture of membrane in presence of allele A, both in homozygotes and in heterozygotes. CONCLUSION: Allelic frequency of A of SNP 12109G>A was higher in women with preterm birth than in women with normal vaginal delivery and could be considered a risk factor.

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ABSTRACT Objective To map existing policies addressing malnutrition in all its forms in Latin America and identify gaps in enabling environments supporting the five priority lines of action outlined in the World Health Organization Comprehensive Implementation Plan on Maternal, Infant and Young Child Nutrition (CIP) approved in 2014. Methods This descriptive study consisted of a systematic Internet search for and mapping of publicly available nutrition-related and sectoral policies already in place to address malnutrition in all its forms in 18 Latin American countries (Argentina, Belize, Bolivia, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, and Uruguay). The policies were described in documents retrieved from the websites of ministries of health, education, agriculture, labor, and development; the national congress; and other government agencies. Results All 18 countries had relevant policies to address malnutrition, especially undernutrition and micronutrient deficiencies, but only a few had policies to address overweight and obesity. Nutrition actions were incorporated in food and nutrition security and social protection policies in all 18 countries, and were part of education, environment, agricultural, development, and/or employment policies in some countries. Information on human and financial resources assigned to nutrition was not available through the search strategies used in the study. Conclusions All 18 countries included in this review had established enabling environments to support CIP implementation. However, each of the 18 countries needs to develop integrated policies for the promotion of nutrition and prevention of noncommunicable diseases through cross-sector involvement and multi-stakeholder collaboration.

Resumen Objetivo Hacer un mapeo de las políticas que existen para combatir la malnutrición en todas sus formas en América Latina y encontrar las brechas que pueda haber en los ambientes propicios para la aplicación de las cinco líneas de acción prioritarias descritas en el Plan de aplicación integral sobre nutrición materna, del lactante y del niño pequeño de la Organización Mundial de la Salud, aprobado en el 2014. Métodos El presente estudio descriptivo consistió en una búsqueda sistemática de la Internet y en un mapeo de las políticas nutricionales y sectoriales a disposición del público que ya se han adoptado para combatir el problema de la malnutrición en todas sus formas en 18 países latinoamericanos (Argentina, Belice, Bolivia, Brasil, Chile, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, México, Nicaragua, Panamá, Paraguay, Perú, República Dominicana y Uruguay). Las políticas estaban descritas en diversos documentos que se obtuvieron de los sitios web de los ministerios de salud, educación, agricultura y ganadería, trabajo y desarrollo; del congreso nacional; y de otras dependencias gubernamentales. Resultados Los 18 países tenían políticas para combatir la malnutrición, especialmente la desnutrición y las carencias de micronutrientes, pero solo unos cuantos tenían políticas relativas al sobrepeso y la obesidad. Diversas medidas de tipo alimentario estaban incorporadas en las políticas de seguridad alimentaria y nutricional y en las de protección social en los 18 países, y en algunos países formaban parte de las políticas educativas, medioambientales, agropecuarias, de desarrollo y laborales. No se encontró ninguna información acerca de los recursos humanos y económicos asignados al área de la nutrición mediante las estrategias de búsqueda que se usaron en el estudio. Conclusiones Los 18 países incluidos en esta revisión habían creado ambientes propicios para la puesta en práctica del Plan de aplicación integral sobre nutrición materna, del lactante y del niño pequeño. Sin embargo, cada uno de ellos tiene que formular políticas integradas para la promoción de la buena nutrición y la prevención de las enfermedades no transmisibles mediante la participación intersectorial y la colaboración entre los diversos interesados directos.

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Objective. To map existing policies addressing malnutrition in all its forms in Latin America and identify gaps in enabling environments supporting the five priority lines of action outlined in the World Health Organization Comprehensive Implementation Plan on Maternal, Infant and Young Child Nutrition (CIP) approved in 2014. Methods. This descriptive study consisted of a systematic Internet search for and mapping of publicly available nutrition-related and sectoral policies already in place to address malnutrition in all its forms in 18 Latin American countries (Argentina, Belize, Bolivia, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, and Uruguay). The policies were described in documents retrieved from the websites of ministries of health, education, agriculture, labor, and development; the national congress; and other government agencies. Results. All 18 countries had relevant policies to address malnutrition, especially undernutrition and micronutrient deficiencies, but only a few had policies to address overweight and obesity. Nutrition actions were incorporated in food and nutrition security and social protection policies in all 18 countries, and were part of education, environment, agricultural, development, and/or employment policies in some countries. Information on human and financial resources assigned to nutrition was not available through the search strategies used in the study. Conclusions. All 18 countries included in this review had established enabling environments to support CIP implementation. However, each of the 18 countries needs to develop integrated policies for the promotion of nutrition and prevention of noncommunicable diseases through cross-sector involvement and multi-stakeholder collaboration.

Objetivo. Hacer un mapeo de las políticas que existen para combatir la malnutrición en todas sus formas en América Latina y encontrar las brechas que pueda haber en los ambientes propicios para la aplicación de las cinco líneas de acción prioritarias descritas en el Plan de aplicación integral sobre nutrición materna, del lactante y del niño pequeño de la Organización Mundial de la Salud, aprobado en el 2014. Métodos. El presente estudio descriptivo consistió en una búsqueda sistemática de la Internet y en un mapeo de las políticas nutricionales y sectoriales a disposición del público que ya se han adoptado para combatir el problema de la malnutrición en todas sus formas en 18 países latinoamericanos (Argentina, Belice, Bolivia, Brasil, Chile, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, México, Nicaragua, Panamá, Paraguay, Perú, República Dominicana y Uruguay). Las políticas estaban descritas en diversos documentos que se obtuvieron de los sitios web de los ministerios de salud, educación, agricultura y ganadería, trabajo y desarrollo; del congreso nacional; y de otras dependencias gubernamentales. Resultados. Los 18 países tenían políticas para combatir la malnutrición, especialmente la desnutrición y las carencias de micronutrientes, pero solo unos cuantos tenían políticas relativas al sobrepeso y la obesidad. Diversas medidas de tipo alimentario estaban incorporadas en las políticas de seguridad alimentaria y nutricional y en las de protección social en los 18 países, y en algunos países formaban parte de las políticas educativas, medioambientales, agropecuarias, de desarrollo y laborales. No se encontró ninguna información acerca de los recursos humanos y económicos asignados al área de la nutrición mediante las estrategias de búsqueda que se usaron en el estudio. Conclusiones. Los 18 países incluidos en esta revisión habían creado ambientes propicios para la puesta en práctica del Plan de aplicación integral sobre nutrición materna, del lactante y del niño pequeño. Sin embargo, cada uno de ellos tiene que formular políticas integradas para la promoción de la buena nutrición y la prevención de las enfermedades no transmisibles mediante la participación intersectorial y la colaboración entre los diversos interesados directos.

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El Síndrome de la Arteria Mesentérica Superior, es una patología rara, en la cual la Arteria Mesentérica Superior comprime la tercera porción del duodeno, ocasionando obstrucción mecánica del mismo. Se describe el caso clínico de un paciente femenino de 44 años de edad con el diagnóstico de Síndrome de Arteria Mesentérica Superior (Síndrome de Wilkie) A quien se le realizó duodeno yeyuno anastomosis latero lateral por vía laparoscópica con resultados satisfactorios en el Serviciode Cirugía II del Hospital Universitario de Caracas.

Superior mesenteric artery compressive syndrome, Wilkie´s syndrome, is a rare pathology; in this, the superior mesenteric artery compress the third duodenal portion and cause obstruction. We report a case of a 44 years old woman with the diagnosis of superior mesenteric artery compressive syndrome who underwent laparoscopic latero-lateral duodeno - jejunostomy with satisfactory evolution in Servicio de Cirugía II from Hospital Universitario de Caracas.

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Introducción: los cambios demográficos recientes condujeron a un aumento del riesgo de eventos vasculares mayores después de cirugía no cardiaca. El monitoreo con troponina y electrocardiografía identificaría más de estos eventos. Métodos: de manera prospectiva se recolectaron datos de pacientes elegibles (mayores de 45 años no seleccionados sometidos a cirugía no cardiaca, bajo anestesia regional o general, con estancia hospitalaria prevista mayor o igual a 24 horas en dos hospitales de Bucaramanga), durante dos períodos de tiempo, antes y después de monitoreo diagnóstico post-operatorio (evaluaciones seriadas de troponina T y electrocardiogramas sin conocimiento de datos clínicos). Para el componente de tiempo anterior a la intervención (cuidado clínico convencional), se tomaron historias clínicas de todos los pacientes elegibles de una muestra aleatoria de tres meses correspondientes a 2005. Para el componente de tiempo posterior al monitoreo, se siguieron 100 pacientes elegibles consecutivos. El desenlace primario fue la incidencia de eventos vasculares mayores intrahospitalarios, incluyendo infarto del miocardio (definido como troponina elevada asociada a cambios electrocardiográficos sugestivos, independiente de los síntomas). Resultados: se incluyeron 534 historias clínicas y 100 pacientes quirúrgicos prospectivos (edad media 62,2 años, DE 12,9; 56% mujeres). El tipo de cirugía más frecuente fue la ortopédica (26,8%) seguida de la intra-abdominal (20,2%). La incidencia de eventos fue 2,8% en historias clínicas, en comparación con una incidencia de 7% en pacientes sometidos a monitoreo (p = 0,071). Los cuatro infartos del miocardio identificados en estos pacientes fueron silentes. Conclusión: el monitoreo diagnóstico post-operatorio con troponina y electrocardiografía, identificó una mayor proporción de eventos vasculares, principalmente infartos silentes del miocardio.

Introduction: recent demographic changes have led to an increased risk of major vascular events among patients undergoing non-cardiac surgery. Troponin and electrocardiogram monitoring would further identify these major vascular events. Methods: we prospectively collected data on elegible patients (non-selected individuals aged 45 or older undergoing non-cardiac surgery under general or regional anesthesia in two hospitals in Bucaramanga, with expected length of stay longer than 24 hours) during a time-interrupted series, before and after postoperative diagnostic monitoring (blinded assessment of troponin T and electrocardiograms ignoring clinical data). For the period before the intervention (usual clinical care), two independent reviewers extracted clinical information from clinical histories (of all eligible patients from 3 randomly-selected months of 2005). For the period after diagnostic monitoring, we followed 100 consecutive eligible patients. Primary outcome was a composite of major vascular events within hospital, including myocardial infarction (defined as any troponin elevation associated with electrocardiographic changes suggesting ischemia, regardless of symptoms). Results: we included 534 clinical charts and 100 prospective surgical patients (mean age 62.2, SD 12.9 years; 56% women). The more frequent surgical procedures were orthopedics (26.8%) followed by abdominal (20.2%). The incidence of major vascular events recorded in clinical charts was 2.8%, compared with 7% among monitored patients (p=0,071). All four myocardial infarctions identified among the later group were silent. Conclusion: postoperative monitoring with troponin and electrocardiography identified a higher proportion of major vascular events, mainly silent myocardial infarctions.

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El estudio del ganglio centinela es un procedimiento actualmente aceptado en el melanoma, cáncer de pene y de mama. Su indicación y utilidad en el cáncer gástrico es aún controvertida. El objetivo del presente trabajo es describir la técnica de la biopsia laparoscópica del ganglio centinela en el cáncer gástrico y la posibilidad de su realización en el Hospital Universitario de Caracas. Se incluyeron dos pacientes durante el período comprendido entre enero y noviembre del 2008 con diagnóstico de carcinoma gástrico en estadio inicial. Se utilizó la técnica combinada con azul patente y tecnecio (Tc99). Una vez identificado el ganglio centinela se procedio a la cirugía habitual. El ganglio se evaluo posteriormente por anatomía patológica en conjunto con el espécimen quirúrgico. El porcentaje de detección del ganglio centinela fue del 50 por ciento. El ganglio centinela detectado fue positivo para metástasis. No hubo morbilidad asociada. La identificación del ganglio centinela por laparoscopia es aplicable en pacientes con cáncer gástrico en estadios iniciales y representa una opción en el abordaje terapéutico minimamente invasivo de dicha patología.

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Determinar la utilidad del bisturi armónico en la realización de la colecistectomía laparoscópica. El tipo de estudio es descriptivo, prospectivo. La muestra fue de 25 pacientes con diagnóstico de litiasis vesicular, la distribución según el sexo y la edad, fue veinte (20) pacientes femeninas y cinco (5) maculinos con una media de edad de 45 años (18-69 años). El tiempo quirúrgico total con una media de 56,7 min; un tiempo de armónico minimo con una media de 30,5 min. Hubo una complicación que representa el 4 por ciento de la muestra, la misma estuvo representada por una fuga biliar. En vista de la complicación presentada se colocó dren a los 13 pacientes restantes, que se retiró a las 24 horas del postoperatorio. El tiempo de hospitalización fue de 24 horas en 21 pacientes y de 48 horas en 4 pacientes que representa 84 por ciento y 16 por ciento de la muestra respectivamente. La colecistectomía laparoscópica con el uso del bisturi armónico para la ligadura del conducto y la arteria císticos es un procedimiento que es factible y seguro con bajas tasas de morbimortalidad.

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En el presente artículo se exponen reflexiones acerca del compromiso de los terapeutas ocupacionales en el fortalecimiento de la profesión desde un área particular en la que confluyen conceptos de la biología y la mecánica. La apropiación de conceptos de la biomecánica constituye un reto en la actualidad para la terapia ocupacional, (T.O) dado que al estar soportada en ciencias exactas constituye una herramienta al servicio de la estandarización, validación y generación de evidencia que posibilite la consolidación de un cuerpo de conocimiento que visibilice a las T.O. en las comunidades académicas globales y en los equipos interdisciplinarios del campo de la disfunción física y la ingeniería en rehabilitación, constituidos por profesionales de diversas disciplinas que desde su apropiación conceptual aportan su saber a la comprensión biomecánica del ser humano. El aporte que las terapeutas ocupacionales hagan en torno a la comprensión del desempeño ocupacional de los individuos permitirá mantenerlos vigentes en una sociedad del conocimiento que demanda profesionales y disciplinas en capacidad de mostrar la efectividad de sus intervenciones.

This paper intends to expose several reflexions related to the compromise of Occupational Therapists towards the consolidation of the profession based on a particular area in which specific biology and mechanic concepts merge. The appropriation of biomechanical concepts is a challenge for Occupational Therapy, since it is build on exact sciences and this implies that it can be used as a tool for the standardization, validation, and generation of evidence that allows us to build up our body of knowledge which can makes us visible in global academic communities and in interdisciplinary teams in the field of physical dysfunction and rehabilitation engineering, constituted by professionals that from their diverse knowledge and conceptual appropriations contribute to the biomechanical comprehension of human beings. The contributions that we can make as Occupational Therapists related to the comprehension of occupational performance from this theoretical perspective, will allow us to remain in force in the middle of a knowledge society that demands professionals and disciplines all along, that are able to demonstrate in a quantitative measure the effectiveness of its procedures and interventions.

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Intrahepatic hypoxia may occur during the inflammatory and fibrotic processes that characterize several chronic liver diseases of viral and autoimmune origin. As a consequence, new vascular structures are formed to provide oxygen and nutrients. Angiogenesis involves a tightly regulated network of cellular and molecular mechanisms that result in the formation of functional vessels. Of particular importance are growth factors and molecules involved in matrix remodeling and cell migration, as weel as vessel maturation-related factors. In recent years a number of studies have investigated the expression and function of many pro- and antiangiogenic molecules in chronic liver diseases and liver regeneration. This review examines the potential pathogenic role of angiogenesis in the context of viral hepatitis, autoinmmune hepatitis, primary biliary cirrhosis and hepatocellular carcinoma.

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