Analysis of results of open and percutaneous disc biopsy in the diagnosis of spondylodiscitis. / Análisis de los resultados de la biopsia discal abierta y percutánea en el diagnóstico de la espondilodiscitis.

INTRODUCTION: Spinal disc biopsy is a necessary tool in diagnosing and treating spondylodiscitis. Its profitability varies according to the technique, concomitant antibiotics therapy or causative germ. We studied the results of this procedure in our institution. MATERIALS AND METHODS: Retrospective analysis of all cases requiring disc biopsy due to possible spondylodiscitis over a 5year period, both percutaneous (26 cases) and open (13 cases). We collected filiation and clinical data, comorbidity, concomitant antibiotic therapy, imaging tests, biopsy type, cultures results and clinical evolution. RESULTS: 39 patients; 66.7% male, 66.9years of average age. 74% has known risk factors. The main symptom was pain (89.7%). Fever occurred in 5%. MRI performed in 87%. Lumbar involvement in 76.9%. 9 patients (23%) received antibiotic treatment simultaneously with biopsy. In these cases biopsy always yielded a negative result, but positive in patients without antibiotics at the time of the biopsy (53.3%), with statistical significance. Most frequent isolated microorganisms were gram-negative bacilli (31.2%) and gram-positive cocci (31.2%). We found 2 deaths during admission for sepsis (within the first month after diagnosis). Of the rest of patients, 5 died late during the follow-up: 3 due to new infections and 2 due to subsequent complications of previous pathologies. The remaining patients with final diagnosis of spondylodiscitis evolved satisfactorily with antibiotic therapy. CONCLUSIONS: Spondylodiscitis is potentially serious and requires an adequate diagnosis, with disc biopsy being a necessary procedure on occasions. Patients poor clinical condition can make it impossible to withdraw antibiotics, which drastically reduces the performance of the biopsy.

Analysis of results of open and percutaneous disc biopsy in the diagnosis of spondylodiscitis / Análisis de los resultados de la biopsia discal abierta y percutánea en el diagnóstico de la espondilodiscitis

Introduction: Spinal disc biopsy is a necessary tool in diagnosing and treating spondylodiscitis. Its profitability varies according to the technique, concomitant antibiotics therapy or causative germ. We studied the results of this procedure in our institution.Materials and methods: Retrospective analysis of all cases requiring disc biopsy due to possible spondylodiscitis over a 5year period, both percutaneous (26 cases) and open (13 cases). We collected filiation and clinical data, comorbidity, concomitant antibiotic therapy, imaging tests, biopsy type, cultures results and clinical evolution. Results: 39 patients; 66.7% male, 66.9years of average age. 74% has known risk factors. The main symptom was pain (89.7%). Fever occurred in 5%. MRI performed in 87%. Lumbar involvement in 76.9%. 9 patients (23%) received antibiotic treatment simultaneously with biopsy. In these cases biopsy always yielded a negative result, but positive in patients without antibiotics at the time of the biopsy (53.3%), with statistical significance. Most frequent isolated microorganisms were gram-negative bacilli (31.2%) and gram-positive cocci (31.2%). We found 2 deaths during admission for sepsis (within the first month after diagnosis). Of the rest of patients, 5 died late during the follow-up: 3 due to new infections and 2 due to subsequent complications of previous pathologies. The remaining patients with final diagnosis of spondylodiscitis evolved satisfactorily with antibiotic therapy. Conclusions: Spondylodiscitis is potentially serious and requires an adequate diagnosis, with disc biopsy being a necessary procedure on occasions. Patients poor clinical condition can make it impossible to withdraw antibiotics, which drastically reduces the performance of the biopsy.(AU)

Introducción: La biopsia discal es una herramienta necesaria en el proceso diagnóstico y terapéutico de las espondilodiscitis. Su rentabilidad es variable según condicionantes como la técnica utilizada, el uso concomitante de antibióticos o el germen causante. Estudiamos los resultados de este procedimiento en nuestro centro en un periodo de 5años. Material y métodos: Análisis retrospectivo de todos los casos que requirieron biopsia discal por posible espondilodiscitis en nuestro centro entre enero de 2015 y noviembre de 2019, tanto percutánea (26 casos) como abierta (13 casos). Recogemos datos de filiación y clínicos, comorbilidad, antibioterapia concomitante, pruebas de imagen, tipo de biopsia, resultado de cultivos y evolución clínica. Resultados: Treinta y nueve pacientes: 66,7% varones, 66,9años de edad media. El 74% con factores de riesgo conocidos. El síntoma principal es dolor mayoritariamente (89,7%) y fiebre en el 5%. La RMN en la prueba más frecuentemente realizada (87%). Los segmentos lumbares se afectaron en el 76,9%, por el 23% los dorsales. En 9 casos (23%) los pacientes reciben tratamiento antibiótico simultáneamente a la realización de la biopsia. En estos casos la biopsia siempre arrojó un resultado negativo. Los cultivos fueron positivos más frecuentemente en los pacientes sin antibióticos en el momento de la biopsia (53,3%), con significación estadística. Los microorganismos aislados de manera más repetida fueron los bacilos gramnegativos (31,2%) y los cocos grampositivos (31,2%). Constatamos 2 fallecimientos durante el ingreso por sepsis (dentro del primer mes tras el diagnóstico). Del resto de los pacientes fallecieron 5 de manera tardía durante el seguimiento: 3 por nuevas infecciones complicadas de manera tardía y 2 por complicaciones ulteriores de patologías previas. El resto de pacientes con diagnóstico final de espondilodiscitis evolucionaron satisfactoriamente con antibioterapia.(AU)

Análisis de los resultados de la biopsia discal abierta y percutánea en el diagnóstico de la espondilodiscitis / Analysis of results of open and percutaneous disc biopsy in the diagnosis of spondylodiscitis

Introducción: La biopsia discal es una herramienta necesaria en el proceso diagnóstico y terapéutico de las espondilodiscitis. Su rentabilidad es variable según condicionantes como la técnica utilizada, el uso concomitante de antibióticos o el germen causante. Estudiamos los resultados de este procedimiento en nuestro centro en un periodo de 5años. Material y métodos: Análisis retrospectivo de todos los casos que requirieron biopsia discal por posible espondilodiscitis en nuestro centro entre enero de 2015 y noviembre de 2019, tanto percutánea (26 casos) como abierta (13 casos). Recogemos datos de filiación y clínicos, comorbilidad, antibioterapia concomitante, pruebas de imagen, tipo de biopsia, resultado de cultivos y evolución clínica. Resultados: Treinta y nueve pacientes: 66,7% varones, 66,9años de edad media. El 74% con factores de riesgo conocidos. El síntoma principal es dolor mayoritariamente (89,7%) y fiebre en el 5%. La RMN en la prueba más frecuentemente realizada (87%). Los segmentos lumbares se afectaron en el 76,9%, por el 23% los dorsales. En 9 casos (23%) los pacientes reciben tratamiento antibiótico simultáneamente a la realización de la biopsia. En estos casos la biopsia siempre arrojó un resultado negativo. Los cultivos fueron positivos más frecuentemente en los pacientes sin antibióticos en el momento de la biopsia (53,3%), con significación estadística. Los microorganismos aislados de manera más repetida fueron los bacilos gramnegativos (31,2%) y los cocos grampositivos (31,2%). Constatamos 2 fallecimientos durante el ingreso por sepsis (dentro del primer mes tras el diagnóstico). Del resto de los pacientes fallecieron 5 de manera tardía durante el seguimiento: 3 por nuevas infecciones complicadas de manera tardía y 2 por complicaciones ulteriores de patologías previas. El resto de pacientes con diagnóstico final de espondilodiscitis evolucionaron satisfactoriamente con antibioterapia.(AU)

Introduction: Spinal disc biopsy is a necessary tool in diagnosing and treating spondylodiscitis. Its profitability varies according to the technique, concomitant antibiotics therapy or causative germ. We studied the results of this procedure in our institution.Materials and methods: Retrospective analysis of all cases requiring disc biopsy due to possible spondylodiscitis over a 5year period, both percutaneous (26 cases) and open (13 cases). We collected filiation and clinical data, comorbidity, concomitant antibiotic therapy, imaging tests, biopsy type, cultures results and clinical evolution. Results: 39 patients; 66.7% male, 66.9years of average age. 74% has known risk factors. The main symptom was pain (89.7%). Fever occurred in 5%. MRI performed in 87%. Lumbar involvement in 76.9%. 9 patients (23%) received antibiotic treatment simultaneously with biopsy. In these cases biopsy always yielded a negative result, but positive in patients without antibiotics at the time of the biopsy (53.3%), with statistical significance. Most frequent isolated microorganisms were gram-negative bacilli (31.2%) and gram-positive cocci (31.2%). We found 2 deaths during admission for sepsis (within the first month after diagnosis). Of the rest of patients, 5 died late during the follow-up: 3 due to new infections and 2 due to subsequent complications of previous pathologies. The remaining patients with final diagnosis of spondylodiscitis evolved satisfactorily with antibiotic therapy. Conclusions: Spondylodiscitis is potentially serious and requires an adequate diagnosis, with disc biopsy being a necessary procedure on occasions. Patients poor clinical condition can make it impossible to withdraw antibiotics, which drastically reduces the performance of the biopsy.(AU)

Resultados de la vertebroplastia en fracturas vertebrales osteoporóticas con indicación límite / Outcomes of vertebroplasty in osteoporotic vertebral fractures with limited indication

INTRODUCCIÓN: La cementación vertebral ha demostrado eficacia en mejorar la calidad de vida y el dolor en fracturas vertebrales osteoporóticas (FVO) sin déficit neurológico no susceptibles de tratamiento conservador. Se aconseja emplearla en fracturas recientes, con aplastamiento <50% y sin ocupación de canal, aunque no existen recomendaciones estrictas. En la práctica clínica encontramos casos en los que estos límites se rebasan. Analizamos los resultados de la vertebroplastia percutánea (VPP) en FVO con indicación relativa/límite. MATERIAL Y MÉTODOS: Análisis retrospectivo de 88 pacientes y 126 fracturas, intervenidos mediante VPP. Del total de fracturas, 95 son osteoporóticas; 34 casos (35%) forman el grupo de indicación límite, con al menos uno de los siguientes: ocupación de canal, hundimiento>50% y>12 meses de evolución de la fractura. El resto constituye el grupo de indicación estándar. Realizamos seguimiento clínico-radiológico, recogimos datos intraquirúrgicos de técnica y complicaciones, fugas, mejoría clínica posquirúrgica (según EVA), nuevas fracturas adyacentes y satisfacción. RESULTADOS: La mayoría fueron fracturas entre D11 y L2 (66%), con seguimiento entre 6 y 8 meses. No hubo diferencias significativas en la mejoría clínica en ambos grupos. Se produjo mayor porcentaje de fugas en el grupo de indicación límite (44% frente al 29,5% del grupo de indicación estándar), sin significación estadística. Todas las fugas fueron asintomáticas. Se produjeron 3 nuevas FVO tras la VPP en el grupo límite por 4 en el grupo estándar, sin diferencias estadísticamente significativas. DISCUSIÓN Y CONCLUSIONES: La cementación en FVO sintomáticas con indicación límite dieron lugar al mismo beneficio clínico en nuestra muestra que aquellas con indicación estándar. Observamos más fugas en el grupo límite, sin repercusión clínica ni más fracturas adyacentes

INTRODUCTION: Vertebroplasty has been shown to be effective for improving quality of life and pain of osteoporotic vertebral fractures (OVF) without neurological deficit and not susceptible to conservative treatment. It is advisable to perform them on recent fractures with 50% crush and without the involvement of the canal, although there are no standard recommendations. In some cases these limits are exceeded. We analyse the outcomes of percutaneous vertebroplasty (PVP) in OVF with relative/limit indication. MATERIALS AND METHODS: Retrospective analysis of 88 patients (126 fractures) who underwent surgery by PVP; 95/126 were osteoporotic fractures. Thirty-four cases (35%) were included in the relative indication group, with at least one of the following: canal involvement,>50% collapse, and>12 months of evolution of the fracture. The rest of the cases were included in the standard indication group. We performed clinical-radiological follow-up, collected intraoperative data on techniques and complications, occurrence of leaks, postoperative clinical improvement (according to VAS), new adjacent fractures, and satisfaction. RESULTS: Most fractures were between D11-L2 (66%) with 6-8 months follow-up. No significant differences were observed regarding clinical improvement in either group. A higher percentage of leaks were detected in the relative indication group, 44% in comparison to 29.5% in the standard indication group, without statistical significance. All leakages were asymptomatic. There were 3 new OVF after PVP in the relative indication group and 4 in the standard group, without statistically significant differences. Discussion and CONCLUSIONS: The use of cement in OVF with relative indication led to the same clinical benefit in our sample as those with standard indication. A higher number of leakages occurred in the relative indication group with no clinical consequences or adjacent fractures

Outcomes of vertebroplasty in osteoporotic vertebral fractures with limited indication. / Resultados de la vertebroplastia en fracturas vertebrales osteoporóticas con indicación límite.

INTRODUCTION: Vertebroplasty has been shown to be effective for improving quality of life and pain of osteoporotic vertebral fractures (OVF) without neurological deficit and not susceptible to conservative treatment. It is advisable to perform them on recent fractures with 50% crush and without the involvement of the canal, although there are no standard recommendations. In some cases these limits are exceeded. We analyse the outcomes of percutaneous vertebroplasty (PVP) in OVF with relative/limit indication. MATERIALS AND METHODS: Retrospective analysis of 88 patients (126 fractures) who underwent surgery by PVP; 95/126 were osteoporotic fractures. Thirty-four cases (35%) were included in the relative indication group, with at least one of the following: canal involvement,>50% collapse, and>12 months of evolution of the fracture. The rest of the cases were included in the standard indication group. We performed clinical-radiological follow-up, collected intraoperative data on techniques and complications, occurrence of leaks, postoperative clinical improvement (according to VAS), new adjacent fractures, and satisfaction. RESULTS: Most fractures were between D11-L2 (66%) with 6-8 months follow-up. No significant differences were observed regarding clinical improvement in either group. A higher percentage of leaks were detected in the relative indication group, 44% in comparison to 29.5% in the standard indication group, without statistical significance. All leakages were asymptomatic. There were 3new OVF after PVP in the relative indication group and 4in the standard group, without statistically significant differences. DISCUSSION AND CONCLUSIONS: The use of cement in OVF with relative indication led to the same clinical benefit in our sample as those with standard indication. A higher number of leakages occurred in the relative indication group with no clinical consequences or adjacent fractures.

Analysis of Arch Widths in Patients With Isolated Pierre Robin Sequence.

OBJECTIVE: To compare arch widths of patients with isolated Robin sequence (IRS) operated using modified von Langenbeck technique and modified Furlow double-opposing z-plasty. DESIGN: Retrospective, transversal study. SETTING: Hospital of Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru, Brazil. PATIENTS: Three groups of patients were analyzed. Group VL comprised 30 patients with IRS operated by von Langenbeck technique (mean age of 8.1 years); group FL included 30 patients with IRS operated by Furlow technique (7.6 years); and the control group included 30 noncleft patients with class I occlusion (7.4 years). The palate repair was performed between 1.0 and 1.7 years of age in both study groups. Transversal measurements of maxillary and mandibular arches were performed digitally on 3D digital models. STATISTIC: The intergroup comparison was performed using analysis of variance and Tukey test. An independent t test was used to compare the complete and incomplete types of cleft in both study groups. The level of significance was 5%. RESULTS: No statistically significant difference was found between the VL and FL groups for maxillary and mandibular arches. However, both groups showed decreased transversal dimensions compared with the control group (P < .01) for both dental arches. No differences for arch widths were observed for complete or incomplete palatal clefts. CONCLUSIONS: No influence of palate repair techniques was observed in the transversal arch widths in patients with IRS. Children with IRS operated for palate repair showed constriction of the maxillary and mandibular dental arches compared with noncleft children regardless the palatal cleft extension.

First reported treatment of aggressive hemangioma with intraoperative radiation therapy and kyphoplasty (Kypho-IORT).

Aggressive hemangiomas invade the spinal canal and/or paravertebral space and may cause cord compression and neurological symptoms. Radiation therapy was recognized as an effective strategy for the treatment of aggressive hemangiomas. Here, it is reported the first case of aggressive vertebral hemangioma treated by a combination of intraoperative radiation therapy and kyphoplasty (Kypho-IORT).

IgE sérica e IgA salival, total y específica para Dermatophagoides pteronyssinus y subpoblaciones leucocitarias en niños atópicos y no atópicos con asma y/o rinitis / Total and Dermatophagoides pteronyssinus specific IgE and salivary IgA and leukocyte populations in atopic and nonatopic children with asthma and/or rhinitis

Objetivo. Investigar inmunológicamente niños con problemas respiratorios de asma y/o rinitis (atópicos o no atópicos) en la búsqueda de evidencias que permitan una mejor comprensión del desbalance que padecen estos niños en su sistema inmune. Materiales y métodos. Se estudiaron 47 niños de ambos sexos, con edades comprendidas entre los 6 y 15 años, que concurrieron a la consulta por afecciones respiratorias compatibles con asma y/o rinitis a la División de Alergia e Inmunología del Hospital de Niños de la Santísima Trinidad de la Ciudad de Córdoba. Según la información obtenida en la anamnesis, examen físico y prick tests, fueron divididos en dos grupos: atópicos (n=25) y no atópicos (n=22). Luego que los padres firmaron el consentimiento informado y los niños mayores a 7 años dieron su asentimiento para participar del trabajo de investigación, se tomaron muestras de sangre y saliva, para determinar concentración y actividad específica en inmunoglobulinas (Igs) así como estudiar poblaciones leucocitarias y subpoblaciones linfocitarias. Resultados. Como era previsible, los niveles de IgE sérica total y los porcentajes relativos de eosinófilos sanguíneos se mostraron significativamente elevados en el grupo de los niños atópicos (A) con respecto a los no atópicos (NA). El estudio de IgE sérica específica para Dermatophagoides pteronyssinus solo arrojó resultados positivos en los pacientes A y se observó una correlación significativa entre los niveles de IgE total y específica para dicho alérgeno, y entre los niveles de prick y RAST. Los niveles séricos de IgG e IgA no demostraron diferencias de significación entre ambos grupos. El estudio de la IgA salival (IgAs) total permitió observar en el grupo de los niños NA concentraciones significativamente mayores que las correspondientes al grupo de pacientes A. Sin embargo, al estudiar la IgAs específica para el D. pteronyssinus, se observó lo inverso: los pacientes A tienen casi el doble de IgAs específica para el alérgeno respecto del grupo NA. En el estudio de subpoblaciones de células T (CD3, CD4 y CD8), no se observaron diferencias significativas entre ambos grupos. Las subpoblaciones de linfocitos B CD27-y linfocitos B CD27+ tuvieron valores similares en ambos grupos (aproximadamente 80% y 20%, respectivamente). En ambos grupos, alrededor de un 50% de los linfocitos B CD27+ expresaron IgD y el 50% restante fueron IgD­. Sin embargo, el grupo de niños A tuvo dos veces menos de linfocitos B que expresan alta densidad de la molécula CD27 (CD27+++) con respecto a los niños NA (p=0,044). Conclusión. Entre los parámetros inmunológicos investigados encontramos diferencias significativas entre niños A y NA en las concentraciones totales y específicas para el D. pteronyssinus en los isotipos de IgE e IgAs, y en una subpoblación de linfocitos B CD27+++. Dichos hallazgos son analizados en la discusión del manuscrito. (AU)

Purpose. To perform an immunologically investigation in children with respiratory problems of asthma and/or rhinitis (atopic or non atopic) in order to get a better understanding of the immune system imbalance in these patients. Materials and methods. 47 children of both sexes, aged between 6 and 15 years, who were attended for respiratory diseases at the Division of Allergy and Immunology at Children's Hospital de la Santísima Trinidad from Córdoba city were studied. According to information obtained on clinical history, physical examination and prick tests they were divided into two groups: Atopics (n=25) and non-atopic (n=22). After parents signed informed consent and children over 7 years assent to participate in the research work, samples of blood and saliva were taken to determine immune globulins concentrations and specific activities as well as to study leukocyte populations and lymphocytes subpopulations. Results. As expected, levels of total serum IgE and the relative percentages of blood eosinophils were significantly higher in the group of atopic (A) children with regard to non¬atopic (NA) children. The study of specific serum IgE for Dermatophagoides pteronissynus only showed positive results in the A group, and positive correlations between the levels of total and specific IgE, as well as prick and RAST values. Serum IgG and IgA levels showed no significant differences between both groups. Total salivary IgA concentrations were significantly higher in the group of NA children than in the group of A patients. Surprisingly, when specific salivary IgA for D. pteronyssinus was studied, the opposite was observed: Atopic patients have nearly twice specific salivary IgA for this allergen than the NA children. In the study of T cells subpopulations (CD3, CD4 and CD8), no significant differences between groups were observed. The subpopulations of CD27-B cells and CD27+ B cells were similar in both groups (roughly 80% and 20%, respectively). In both groups, approximately 50% of CD27+ B cells expressed IgD and the remaining 50% were IgD­. However, atopic children had less than half B cells expressing high density of CD27 molecule (CD27+++) with respect to the NA children (p=0.044). Conclusion: Among the immunological parameters investigated, we found significant differences between A and NA children in the concentrations of total and specific IgE and salivary IgA to the allergen, and in a subpopulation of CD27+++ B cells. These findings are debated in the discussion of the manuscript(AU)

Caracterización de cyberbullying en el gran Santiago de Chile, en el año 2010 / Cyberbullying prevalence in Santiago of Chile, in 2010

El estudio caracteriza el cyberbullying en estudiantes del gran Santiago de Chile (2010). Se aplicó una encuesta de autorreporte (Cuestionario de Experiencias de Internet) a 1.357 estudiantes entre 7º básico a IVº medio. El diseño de muestra fue no probabilístico por cuotas en 32 establecimientos educacionales, ponderados según género, curso y tipo de dependencia. El 50% fueron hombres, con un promedio de edad 15 años (DS= 1,82 años). Resultados: El 11,4% reportó haber sido víctima de algún tipo de cyberbullyingy el 12,5% victimario. No se encontraron diferencias significativas en las víctimas según sexo, curso y tipo de dependencia. Sólo los hombres reportan identificarse en forma más frecuente con los victimarios que las mujeres. Conclusiones: El cyberbullying es un fenómeno existente en la realidad chilena, siendo - mayormente - homogéneo en su presentación. Dado esto, se plantean nuevos desafíos y preguntas respecto a sus consecuencias tanto para los estudiantes como para todo el sistema escolar.

This study characterizes the cyberbullying among students in Santiago, Chile (2010). A self-report questionnaire (Internet Experiences Questionnaire) was completed by 1,357 students from 7th to 12th grade. The sample design was non-probability and based on quota sampling. The data were weighted by gender, grade and type of school dependency. Among the respondents 50% were men, average age 15 years (SD = 1.82 years). The results show that 11.4% reported having been the victim of some form of cyberbullying and 12.5% victimizer. No significant differences were found between the gender, grade or type of school dependency of the victims. In the role of perpetrator, boys reported a higher frequency in compare to girls. We conclude that cyberbullying is a phenomenon that exists in Chilean reality, and it is mostly-homogenous in its presentation. Given this, new challenges and questions regarding the consequences of cyberbullying for students and the educational system are raised.

Caracterización de cyberbullying en el gran Santiago de Chile, en el año 2010 / Cyberbullying prevalence in Santiago of Chile, in 2010

El estudio caracteriza el cyberbullying en estudiantes del gran Santiago de Chile (2010). Se aplicó una encuesta de autorreporte (Cuestionario de Experiencias de Internet) a 1.357 estudiantes entre 7º básico a IVº medio. El diseño de muestra fue no probabilístico por cuotas en 32 establecimientos educacionales, ponderados según género, curso y tipo de dependencia. El 50% fueron hombres, con un promedio de edad 15 años (DS= 1,82 años). Resultados: El 11,4% reportó haber sido víctima de algún tipo de cyberbullyingy el 12,5% victimario. No se encontraron diferencias significativas en las víctimas según sexo, curso y tipo de dependencia. Sólo los hombres reportan identificarse en forma más frecuente con los victimarios que las mujeres. Conclusiones: El cyberbullying es un fenómeno existente en la realidad chilena, siendo - mayormente - homogéneo en su presentación. Dado esto, se plantean nuevos desafíos y preguntas respecto a sus consecuencias tanto para los estudiantes como para todo el sistema escolar.(AU)

This study characterizes the cyberbullying among students in Santiago, Chile (2010). A self-report questionnaire (Internet Experiences Questionnaire) was completed by 1,357 students from 7th to 12th grade. The sample design was non-probability and based on quota sampling. The data were weighted by gender, grade and type of school dependency. Among the respondents 50% were men, average age 15 years (SD = 1.82 years). The results show that 11.4% reported having been the victim of some form of cyberbullying and 12.5% victimizer. No significant differences were found between the gender, grade or type of school dependency of the victims. In the role of perpetrator, boys reported a higher frequency in compare to girls. We conclude that cyberbullying is a phenomenon that exists in Chilean reality, and it is mostly-homogenous in its presentation. Given this, new challenges and questions regarding the consequences of cyberbullying for students and the educational system are raised.(AU)

Evaluación de la efectividad del Programa Vínculos para la prevención e intervención del Bullying en Santiago de Chile / Assessment of the efectiveness of an intervention called "Vínculos" to prevent Bullying in Santiago de Chile / Avaliação da eficácia do Programa Vínculos para prevenção e intervenção sobre o Bullying em Santiago do Chile

El Bullying, por sus características y consecuencias, se ha transformado en una preocupación central en los colegios, los cuales han desarrollado diferentes formas de afrontarlo. El objetivo principal de este artículo es evaluar la efectividad de un programa de prevención e intervención de Bullying y Ciberbullying, en una muestra de 320 alumnas en un colegio de Santiago de Chile, a través de un diseño pre-post. El programa utilizó estrategias preventivas e integrales orientadas a realizar intervenciones en los distintos niveles del sistema escolar: colegio, sala de clases, individuo y familia. Los resultados demostraron que el programa es efectivo en disminuir el reporte de ser testigos de Bullying y la victimización de manotaje a través de internet. La efectividad del programa se debería a que se respetaron los lineamientos de los programas que han demostrado ser efectivos.(AU)

Bullying, by its nature and consequences, has become a central concern in schools, which have developed different ways of facing it. The main objective of this paper is to assess the effectiveness of a prevention and intervention program of bullying and cyberbullying in a sample of 320 students in a school for girls in Santiago de Chile, through a pre-post design. The program used preventive and comprehensive strategies aimed to perform interventions at the different levels in the school system: school, classroom, individual and family. Results showed that the program is effective in diminishing the report of witnessing bullying and victimization from bullying via Internet. The effectiveness of the program could be due to the multi-level targets of the program that taps different aspects, actors and domain of this pervasive problem.(AU)

O Bullying, por suas características e conseqüências, tornou-se uma preocupação central nas escolas, e estas desenvolveram diferentes formas de enfrentamento. O principal objetivo deste trabalho é avaliar a eficácia de um programa de prevenção e de intervenção sobre o bullying e cyberbullying em uma amostra de 320 alunas de uma escola em Santiago do Chile. A proposta de avaliação realizou-se através de aplicação de instrumentos antes e depois à implementação do programa. O programa utilizou estratégias preventivas e abrangentes destinadas a realizar intervenções em vários níveis do sistema escolar: escola, sala de aula, indivíduos e familias. Os resultados mostraram que o programa é eficaz na redução de relatos de testemunhar bullying e vitimização através da internet. A eficácia do programa dever-se-ia ao respeito das diretrizes dos programas que têm se mostrado eficazes.(AU)

Evaluación de la efectividad del Programa Vínculos para la prevención e intervención del Bullying en Santiago de Chile / Assessment of the efectiveness of an intervention called "Vínculos" to prevent Bullying in Santiago de Chile / Avaliação da eficácia do Programa Vínculos para prevenção e intervenção sobre o Bullying em Santiago do Chile

El Bullying, por sus características y consecuencias, se ha transformado en una preocupación central en los colegios, los cuales han desarrollado diferentes formas de afrontarlo. El objetivo principal de este artículo es evaluar la efectividad de un programa de prevención e intervención de Bullying y Ciberbullying, en una muestra de 320 alumnas en un colegio de Santiago de Chile, a través de un diseño pre-post. El programa utilizó estrategias preventivas e integrales orientadas a realizar intervenciones en los distintos niveles del sistema escolar: colegio, sala de clases, individuo y familia. Los resultados demostraron que el programa es efectivo en disminuir el reporte de ser testigos de Bullying y la victimización de manotaje a través de internet. La efectividad del programa se debería a que se respetaron los lineamientos de los programas que han demostrado ser efectivos.

Bullying, by its nature and consequences, has become a central concern in schools, which have developed different ways of facing it. The main objective of this paper is to assess the effectiveness of a prevention and intervention program of bullying and cyberbullying in a sample of 320 students in a school for girls in Santiago de Chile, through a pre-post design. The program used preventive and comprehensive strategies aimed to perform interventions at the different levels in the school system: school, classroom, individual and family. Results showed that the program is effective in diminishing the report of witnessing bullying and victimization from bullying via Internet. The effectiveness of the program could be due to the multi-level targets of the program that taps different aspects, actors and domain of this pervasive problem.

O Bullying, por suas características e conseqüências, tornou-se uma preocupação central nas escolas, e estas desenvolveram diferentes formas de enfrentamento. O principal objetivo deste trabalho é avaliar a eficácia de um programa de prevenção e de intervenção sobre o bullying e cyberbullying em uma amostra de 320 alunas de uma escola em Santiago do Chile. A proposta de avaliação realizou-se através de aplicação de instrumentos antes e depois à implementação do programa. O programa utilizou estratégias preventivas e abrangentes destinadas a realizar intervenções em vários níveis do sistema escolar: escola, sala de aula, indivíduos e familias. Os resultados mostraram que o programa é eficaz na redução de relatos de testemunhar bullying e vitimização através da internet. A eficácia do programa dever-se-ia ao respeito das diretrizes dos programas que têm se mostrado eficazes.

Consanguinity in the Bishopric of Ourense (Galicia, Spain) from 1900 to 1979.

BACKGROUND: Knowledge of the levels of inbreeding in the human population is interesting because it is one of the characteristics that conditions its genetic structure and has important genetic-medical repercussions in the descendants of marriages between close relatives. Galicia (north-west Spain) is a region with very special geographic, historic and social characteristics that makes it particularly interesting for consanguinity studies. PRIMARY OBJECTIVE: The object of this investigation is the study of the levels of inbreeding and the structure of consanguinity in rural area of the Dioceses of Ourense (Galicia) during the period 1900-1979. SUBJECTS AND METHODS: In the study, data corresponding to 437 parishes, integrated in 80 municipalities of the rural area of the Dioceses of Ourense were analysed. In the period studied, of a total of 110 128 marriages, 9010 took place between biologically related individuals up to the level of second cousins. The rate of consanguinity and the average coefficient of inbreeding of the population, as well as the percentage of the different types of consanguineous marriages, were calculated. MAIN OUTCOMES AND RESULTS: The rate of consanguinity for the period 1900-1979 is 8.18% and the average coefficient of inbreeding is 3.0662 x 10(-3). The most frequent type of consanguineous marriage is between second cousins (4.00% of all marriages). There is a notably high frequency of marriages of multiple relationships (0.52%) and the frequency of uncle-niece or aunt-nephew marriages is 0.16%. The average value of the M22/M33 ratio is 0.66 and during the 80 years studied, with regard to the temporal variation of the average coefficient of inbreeding, the annual values followed a polynomial curve with an inflection point in 1921. CONCLUSIONS: The highest values of consanguinity detected in Galicia, for the same period, were registered in the Dioceses of Ourense and the high rate of uncle-niece or aunt-nephew marriages habitual in this region was confirmed. The latter is explained by the important incidence in the Galician population of the migration to America at the end of the 19th and beginning of the 20th century. However, when the relative frequency of this type of marriage with respect to the total number of consanguineous marriages is calculated, it has relatively low values due to the high proportion of marriages between second cousins and marriages of multiple relationships, the highest in Galicia for an equal period of time. The rate of marriages between first cousins is also the highest in Galicia, confirming a phenomenon that appears to be common in the rural areas of the northern area of the Iberian Peninsula.

Evolution of consanguinity in the Bishopric of Lugo (Spain) from 1900 to 1979.

BACKGROUND: The levels of consanguinity in human populations are known to be influenced by demographic and geographical factors, and by socio-cultural customs that govern spouse choice. Within the general model applicable to the populations of Western Europe, Galicia (north-west Spain) is a region that is especially interesting, due to its geographical and historical peculiarities that could have conditioned its behaviour pattern with respect to consanguinity. PRIMARY OBJECTIVE: The object of this paper is to analyse the evolution of the consanguinity structure levels in the rural population of the Bishopric of Lugo (Galicia) during the period 1900-1979. SUBJECTS AND METHODS: The study covers a total of 752 parishes included in 52 municipalities of the rural area of the Bishopric of Lugo. Of a total of 117,583 marriages in the period studied, 6701 were between biologically related individuals up to the level of second cousins. The percentage of the different types of consanguineous marriages, the consanguinity rates, and the average coefficient of inbreeding of the population was calculated. Also, for the analysis of the temporal variation of consanguinity, version 3.01 of Jandel Scientific's Table Curve program was used. MAIN OUTCOMES AND RESULTS: The consanguinity rate for the whole of the period is 5.70% and the average coefficient of inbreeding is 2.2477 x 10(-3), values which fall within the observed range for Spanish populations. As for the consanguinity structure, the most frequent types of consanguineous marriages are between second cousins (2.65% of all marriages), but the high proportion of marriages between uncles/nieces or aunts/nephews (0.16%) and first cousins (2.12%) with regard to the total number of marriages should be emphasized. The average value of the M22/M33 ratio is 0.80, and throughout the study period it was above the 0.25 expected in conditions of panmixia. Regarding the evolution of the average coefficient of inbreeding, its annual values fit a polynomial regression curve with one ascending and one descending branch and an inflection point in the year 1919. CONCLUSIONS: As in other rural areas of Galicia, the structure of consanguinity in the Bishopric of Lugo is characterized by the high proportion of marriages between uncles/nieces or aunts/nephews and first cousins, a phenomenon which appears to be generalized in the rural populations of northern Spain. It is suggested that the high proportion of uncle/niece marriages that have been found in the population studied are very probably due to the important migratory phenomenon which took place in this region at the end of the 19th century and in the first third of the 20th century.

Local differences in the Archbishopric of Santiago de Compostela (Galicia, Spain) in relation to the consanguinity structure, 1900-1979.

The microgeographic variability of consanguinity in the Archbishopric of Santiago de Compostela (Galicia) between 1900 and 1979 was studied. This Archbishopric covers 106 local councils integrated by 964 parishes, of which 677 (70.23%) were analyzed. Of the 307,094 marriages counted within this period, 15,739 corresponded to weddings between biologically related couples. Within the Archbishopric, eight geographical regions were considered: six coastal regions (Golfo Artabro, Bergantiños, Fisterra, Xallas, Santiago Oeste, and Rías Baixas) and two inland regions (Santiago Este and Terra de Montes). In order to evaluate the differences and similarities among them, the frequencies of all types of marriages (consanguineous and nonconsanguineous) were considered. First, a hierarchical grouping of the regions based on their chi-squared distances was performed. Then, in order to analyze relationships that are exclusively due to the structure of consanguinity, a correspondence analysis was performed and only the frequency of the different types of consanguineous marriages was taken into account. The results from both statistical analyses indicate special features of the Xallas region, both in the level of inbreeding (8.75%, the highest in the Archbishopric) and in the structure of consanguinity, for which a high proportion of uncle-niece marriages was found (6.22% of all consanguineous marriages). In all cases the structure of consanguinity provides informative nuances on the differences and similarities among population groups.

Evolution of consanguinity in the Archbishopric of Santiago de Compostela (Spain) during 1900-1979.

We present a study of the frequencies of the different types of consanguineous marriages, up to the level of second cousins, using as a source the ecclesiastical dispensations given from 1900 to 1979 in the Archbishopric of Santiago de Compostela (Galicia, Spain). We also report the rate of consanguinity, the average coefficient of inbreeding, and its evolution. From 1900 to 1979, 15,739 consanguineous marriages were registered, corresponding to 25 different categories of relationship. The rate of consanguinity of the total number of consanguineous marriages is 5.13% and the average coefficient of inbreeding is 1.94 x 10(-3), values that are within the wide range of variability found in other Spanish populations. Spain is characterized, with regard to the rest of Western Europe, by a high level of inbreeding with a late and rapid decrease in this factor. The most relevant aspect of the structure of consanguinity lies in the high frequency of marriages between close relatives: 0.16% uncle-niece or aunt-nephew marriages and 1.62% marriages between first cousins, both values with respect to the total number of marriages. This phenomenon appears to be generalized throughout northern Spain. The evolution of the total consanguinity lends itself to a polynomial curve model. The fitted curve of the evolution of the average coefficient of inbreeding has an ascending branch and a descending branch, with the inflection point situated in the year 1918; the regression lines, for both the ascending and the descending branches, have regression coefficients significantly different from 0 (p < 0.001).

Additional data on PGP genetic transmission in family groups.

PGP (phosphoglycolate phosphatase, EC 3.1.3.18.) gentic studies were performed in 188 families including a total of 415 offspring in the Galician population. The results are in agreement with the formal hypothesis of three codominant alleles at an autosomal locus. No silent alleles have been observed.