RESUMO
OBJECTIVE: The Family Adaptability and Cohesion Evaluation Scale III (FACES III) is a self-report instrument that enables the assessment of the dimensions of adaptability and cohesion within a family, establishing whether or not that family is functional and classifying it according to categories within those dimensions. The objective of this research was to determine the psychometric properties of this instrument using a sample of dental students from 5 Latin American countries. MATERIALS AND METHODS: The FACES III was administered to a sample of 2888 university dental students from Colombia (35.3%), Chile (34.6%), the Dominican Republic (19%), Argentina (6%), and El Salvador (5.1%). Confirmatory factor analysis was used to examine the factorial structure of the scale, comparing 3 models proposed in the Latin American literature, establishing a multigroup analysis to examine invariance among countries. RESULTS: The results revealed a structure composed of 2 dimensions: cohesion and adaptability. These dimensions showed adequate structure and internal consistency. The invariance of the measurement model in the participating countries was confirmed. CONCLUSION: In general, this study offers evidence of the adequacy of the psychometric properties of FACES III in Colombian, Chilean, Dominican, Argentine, and Salvadoran dental students.
Assuntos
Psicometria , Estudantes de Odontologia , Humanos , Masculino , Feminino , Estudantes de Odontologia/psicologia , Adulto Jovem , Adulto , Universidades , Relações Familiares/psicologia , Análise Fatorial , Autorrelato , América Latina , Colômbia , Adolescente , ChileRESUMO
Abstract Introduction: The concept of empathy has been incorporated as one of the key elements for the achievement of the teaching-learning process goals in health science students. Objective: To estimate and compare the levels of empathy among dental students and professors in the undergraduate dental medicine program at the Universidad Central del Este (Dominican Republic). Materials and methods: Cross-sectional study. The study population (n=264) was divided into two groups: the first consisted of students in their first to fifth year of dental school (N=223; n=215), distributed in two areas (basic-preclinical and clinical courses), while the second group comprised professors working in both areas in the dental school of the university (N=53; n=49). The Jefferson Scale of Empathy (S-Version) was used. The descriptive analysis of the data included the estimation of means, standard deviations and percentages, and the reliability of the data was estimated using Cronbach's alpha. In addition, a two-way ANOVA was performed, calculating the effect size and the statistical power of the test; furthermore, when the Fisher's exact test was significant for any factor, Tukey's test was used to estimate differences between means. A significance level of α<0.05 and β<0.20 was established. Results: Overall empathy scores and compassionate care dimension scores among the professor group did not differ significantly from the scores obtained by the students (basic-preclinical and clinical area), but there were differences between students from both areas (p<0.05). There were no significant differences between the three subgroups in the Perspective Taking and Walking in the Patient's Shoes dimensions (p=0.428 and p=0.866). Conclusion: The levels of empathy and compassionate care dimension of professors are similar to those of students in general (regardless of the area).
Resumen Introducción. El concepto de empatía se ha integrado como uno de los elementos centrales para el logro final del proceso de enseñanza-aprendizaje en estudiantes de ciencias de la salud. Objetivo. Estimar y comparar los niveles de empatía entre estudiantes y profesores de pregrado de odontología de la Universidad Central del Este (República Dominicana). Materiales y métodos. Estudio transversal. La población de estudio (n=264) se dividió en dos grupos: el primero, compuesto por estudiantes de primero a quinto año de la carrera de odontología (N=223; n=215) distribuidos en dos áreas (básica-preclínica y clínica), y el segundo, por los docentes de ambas áreas en la escuela de odontología de la universidad (N=53; n=49). Se utilizó la Escala de Empatía Médica de Jefferson (Versión-S). El análisis descriptivo de los datos incluyó la estimación de medias, desviaciones estándar y porcentajes, y la confiabilidad de los datos se estimó mediante CC de Cronbach; además, se realizó un ANOVA bifactorial, calculándose el tamaño del efecto y la potencia de la prueba, y en los casos en que la prueba exacta de Fisher fue significativa para algún factor, se utilizó la prueba de Tukey para estimar las diferencias entre las medias. El nivel de significancia estadística utilizado fue α<0.05 y β<0.20. Resultados. Los valores globales de empatía y de la dimensión Cuidado con compasión en los profesores no difirieron significativamente con los obtenidos por los estudiantes (área básica-preclínica y clínica), pero sí hubo diferencias entre los estudiantes de ambas áreas (p<0.05). En las dimensiones Adopción de perspectiva y Ponerse en los zapatos del otro no existieron diferencias entre los tres subgrupos (p=0.428 y p=0.866). Conclusión. Los niveles de empatía y de la dimensión Cuidado compasivo de los profesores no difieren de los de los estudiantes en general (ambas áreas).
RESUMO
OBJECTIVE: The objective of this study was to determine cut-off points that can be used to differentiate measures of empathy, which would then be classified as high, medium, or low. To do so, we used data from students from 7 medical schools in Colombia, El Salvador, and the Dominican Republic, after determining the psychometric properties of the 3-dimensional model of empathy in the Jefferson Scale of Empathy, S-version (for medical students). MATERIALS AND METHODS: This non-experimental descriptive study had a sample that consisted of 6291 students. The structure and factor invariance were analyzed by country and sex. A hierarchical cluster analysis and a bifactorial analysis of variance were applied. RESULTS: The measure of empathy was reliable on the global scale (α = .82; ω = .88). A confirmatory factor analysis showed that the original model was replicable and adjusted to the data (comparative fit index [CFI] = .90; goodness of fit index = .94), while the multigroup analysis allowed to assume an invariant factor structure by country and gender (ΔCFI < .01). Tables were constructed with cut off points for empathy and its dimensions. DISCUSSION AND CONCLUSION: Our study solves the problem of comparing the scores and the levels of empathy observed in the medical students at different schools of medicine, making said comparisons within and between countries and between genders. The instrument used has adequate psychometric properties and the cut-off values obtained allow the classifying of people with lower or higher levels of empathy.
Assuntos
Estudantes de Medicina , República Dominicana , Empatia , Feminino , Humanos , Masculino , Psicometria , Reprodutibilidade dos Testes , Inquéritos e QuestionáriosRESUMO
Abstract Introduction: Empathy is an important trait in the training of medical students, as it has been shown that it improves the doctor-patient relationship. Objective: To evaluate the decline of empathy levels and possible sex differences in undergraduate medical students from the Universidad Central del Este, Dominican Republic. Materials and methods: Exploratory cross-sectional study. A Spanish version of the Jefferson Scale of Empathy for Medical Students (S-version) Scale was administered in September 2018 to 1 144 1st-year to 5th-year medical students (887 women and 257 men). Data reliability was verified using the Cronbach's alpha and the intraclass correlation coefficient (ICC). A generalized linear equation model (Type III) was applied to analyze data and the Wald chi-squared test was used to determine differences in overall empathy levels and the mean scores obtained in each of its three components based on the year of medical training and sex. Results: Cronbach's alpha was satisfactory (0.839), and the ICC was 0.834 (F=5.68; p=0.005). The variability of the estimated curves in relation to empathic behavior by course (year of medical training) and sex was observed using linear and non-linear regression equations: Wald x2=115.6, p=0.0001 between courses; and Wald x2 =12.85, p=0.001 between men and women. Conclusions: Sex differences were observed regarding empathy levels in the study population. Moreover, a decline in empathy levels (overall empathy and Compassionate Care component in men and Walking in the Patient's Shoes component in men and women) was also observed as students progressed in their medical training. The behavior of these data raises questions regarding the need to determine the factors causing these differences and the decline in empathy levels.
Resumen Introducción. La empatia es un rasgo importante en los estudiantes de medicina, ya que se ha demostrado que mejora la relación médico-paciente. Objetivo. Evaluar la declinación empática y las posibles diferencias según el sexo en los niveles de empatia en estudiantes de pregrado de Medicina en la Universidad Central del Este, República Dominicana. Materiales y métodos. Estudio exploratorio transversal. La versión en español de la Escala de Empatia de Jefferson adaptada para estudiantes de medicina (versión S) fue aplicada a 1 144 estudiantes de medicina de 1° a 5° año (887 mujeres y 257 hombres). La confiabilidad de los datos se verificó mediante el alfa de Cronbach y el coeficiente de correlación intraclase (CCI). Los datos se analizaron utilizando un modelo de ecuación lineal generalizada (Tipo III) y se utilizó la prueba x2 de Wald para determinar las diferencias en los niveles globales de empatia y los puntajes promedio de sus tres componentes según el año de formación y el sexo. Resultados. El alfa de Cronbach fue satisfactorio (0.839) y el CCI fue de 0.834 (F=5.68; p=0.005). Mediante ecuaciones de regresión lineal y no lineal se observó variabilidad de las curvas estimadas en relación con el comportamiento empático según el curso (año de formación médica) y el sexo: entre cursos: x2 de Wald= 115.6; p=0.000i, y entre hombres y mujeres: x2 de Wald= 12.85; p=0.001). Conclusiones. Se observaron diferencias en los niveles de empatia según el sexo; también se evidenció una declinación en los niveles de empatia (empatia global y componente Cuidado con compasión en los hombres, y en el componente Ponerse en los zapatos del otro en hombres y mujeres) a medida que los estudiantes avanzaban en su formación. El comportamiento de estos datos genera interrogantes relacionados con la necesidad de determinar los factores que causan estas diferencias y dicha declinación empática.
RESUMO
Brain asymmetry is a conserved feature in vertebrates. The dorsal diencephalic habenular complex shows conspicuous structural and functional asymmetries in a wide range of species, yet it is unclear if this condition is also present in humans. Addressing this possibility becomes relevant in light of recent findings presenting the habenula as a novel target for therapeutic intervention of affective disorders through deep brain stimulation. Here we performed volumetric analyses in postmortem diencephalic samples of male and female individuals, and report for the first time, the presence of directional asymmetries in the volume of the human habenula. The habenular volume is larger on the left side in both genders, a feature that can be explained by an enlargement of the left lateral habenula compared to the right counterpart. In contrast, the volume of the medial habenula shows no left-right directional bias in either gender. It is remarkable that asymmetries involve the lateral habenula, which in humans is particularly enlarged compared to other vertebrates and plays relevant roles in aversive processing and aversively motivated learning. Our findings of structural asymmetries in the human habenula are consistent with recent observations of lateral bias in activation, metabolism and damage of the human habenula, highlighting a potential role of habenular laterality in contexts of health and illness.
Assuntos
Lateralidade Funcional , Habenula/anatomia & histologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Caracteres Sexuais , Adulto JovemRESUMO
This chapter discusses the relationship between failure in placentation and the subsequent alterations in the normal structure of the placenta. Interstitial Cajal-like cells (ICLC) were observed for the first time in the human placenta in 2007 and later were named telocytes. Strong evidence confirms that in the placental chorionic villi, TC are located strategically between the smooth muscle cells (SMC) of the fetal blood vessel wall and the stromal myofibroblasts. As the placenta is a non-innervated organ and considering the strategic position of telocytes in chorionic villi, it has been postulated that their function would be related to signal transduction mechanisms involved in the regulation of the blood flow in the fetal vessels, as well as in the shortening/lengthening of the chorionic villi providing the necessary rhythmicity to the process of maternal/fetal metabolic exchange. In this context, telocytes represent part of a functional triad: "SMC of fetal blood vessel-telocyte-myofibroblast." This triad takes part in the regulation of fetal growth and development via transport of nutrients and gases. This chapter also discusses the alterations in the metabolic maternal-fetal exchange, leading to intrauterine growth retardation and preeclampsia. Additionally, the apoptosis undergoing in the preeclamptic hypoxic placenta affects all the chorionic villi cells, including telocytes and myofibroblast, and not only trophoblast, as it has been so far considered. In consequence, we proposed that apoptosis affects the triad structure and alters the placental function, subsequently affecting the normal fetal growth and development.
Assuntos
Retardo do Crescimento Fetal/patologia , Hipóxia/patologia , Miócitos de Músculo Liso/patologia , Miofibroblastos/patologia , Pré-Eclâmpsia/patologia , Telócitos/patologia , Apoptose , Vilosidades Coriônicas/metabolismo , Vilosidades Coriônicas/patologia , Feminino , Retardo do Crescimento Fetal/metabolismo , Humanos , Hipóxia/metabolismo , Troca Materno-Fetal , Miócitos de Músculo Liso/metabolismo , Miofibroblastos/metabolismo , Pré-Eclâmpsia/metabolismo , Gravidez , Transdução de Sinais , Telócitos/metabolismo , Trofoblastos/metabolismo , Trofoblastos/patologiaRESUMO
Telocytes (TC) are a new type of stromal cells initially found and studied in digestive and extra- digestive organs. These cells have a small cell body with 2 to 5 thin and extremely long cytoplasmic prolongations named telopodes. In recent years, TC have also been described in placental chorionic villi, located in a strategical position between the smooth muscle cells from fetal vessels and the myofibroblasts in the stromal villi. Unlike other organs, the placenta is not innervated and considering the strategic location of TC is has been postulated that TC function would be related to signal transduction mechanisms involved in the regulation of the fetal vessels blood flow, as well as in the shortening/lengthening of the chorionic villi, providing the necessary rhythmicity to the process of maternal/fetal metabolic exchange. Preeclampsia (PE) is a systemic syndrome that affects 4%-6% of pregnancies worldwide. It is characterized by a placental state of ischemia-hypoxia which triggers an oxidative stress stage with the concomitant production of reactive oxygen species (ROS) leading to an increase in the degree of placental apoptosis. Placental vascular tone is regulated by the vasodilator nitric oxide (NO) and, in PE cases, NO is diverted towards the formation of peroxynitrite, a powerful oxidative agent whose activity leads to an increase of placental apoptosis degree that compromises TC and myofibroblasts, a key feature we would like to emphasize in this work.
Assuntos
Apoptose , Vilosidades Coriônicas/patologia , Hipóxia/patologia , Troca Materno-Fetal , Pré-Eclâmpsia/patologia , Telócitos/patologia , Animais , Feminino , Humanos , GravidezRESUMO
AIMS: To examine the causes of variability in the effect of maternal drinking on the foetus, with particular reference to the pattern, frequency and duration of the period of drinking, differences in maternal, foetal and placental metabolism of ethanol/acetaldehyde, and genetic factors. METHODS: Narrative review of published studies of the pathogenesis of foetal alcohol syndrome (FAS) with emphasis in the development of the central nervous system. RESULTS: Animal models suggest that acetaldehyde, the primary hepatic oxidative metabolite of ethanol, reaches the foetus either by placental production or by placental transference, which in turn could affect foetal growth and development. The most likely hypothesis regarding the decrease of foetal growth is via hypoxia and increased oxidative/nitrative stress, which interfere with cellular processes that require oxygen in order to function adequately, such as placental transport. CONCLUSION: There seems to be an association between the teratogenic effect, hypoxia and oxidative stress, the molecular mechanism involved (e.g. apoptosis) and the range of effects. The review sums ups the evidence that could explain some of the abnormalities in the brain development that could be related to behavioural problems observed in individuals with FAS/foetal alcohol spectrum disorder. This suggests that alcohol consumption produces failures in the normal migration of radial cells, from which the rest of the brain cells would eventually develop.
Assuntos
Consumo de Bebidas Alcoólicas/efeitos adversos , Transtornos do Espectro Alcoólico Fetal/etiologia , Desenvolvimento Fetal/efeitos dos fármacos , Placenta/patologia , Complicações na Gravidez/induzido quimicamente , Encéfalo/efeitos dos fármacos , Encéfalo/crescimento & desenvolvimento , Encéfalo/metabolismo , Feminino , Transtornos do Espectro Alcoólico Fetal/metabolismo , Humanos , Hipóxia/complicações , Hipóxia/metabolismo , Modelos Biológicos , Estresse Oxidativo/efeitos dos fármacos , Placenta/efeitos dos fármacos , Gravidez , Complicações na Gravidez/metabolismo , Complicações na Gravidez/patologiaRESUMO
The habenular complex (HbCpx) is a phylogenetically conserved brain structure located in the epithalamus of vertebrates. Despite its fundamental role in decision-making processes and the proposed link between habenular dysfunction and neuropsychiatric conditions, little is known about the structural and functional organization of the HbCpx in humans. The goal of this study was thus to provide a first systematic morphologic and immunohistochemical analysis of the human HbCpx to begin dissecting its nuclear and subnuclear organization. Our results confirmed that the human HbCpx is subdivided into medial (MHb) and lateral (LHb) nuclei, each showing a large degree of intranuclear morphologic heterogeneity. Analysis of serially stained sections using a combination of morphologic and immunohistochemical criteria allowed the distinction of five subnuclei in both the MHb and LHb. Overall, the observed subnuclear organization of the MHb in humans resembles the organization of subnuclei in the MHb of rats. The shape, relative size, and intranuclear organization of the LHb, however, show significant differences. The contribution of the LHb to the entire HbCpx is about five times larger in humans than in rats. Noteworthy, a dorsal domain of the LHb that contains afferent myelinated fibers from the stria medullaris and shows GABA-(B) -R(1) immunoreactive cells, appears substantially enlarged in humans when compared to rats. This feature seems to account for a large part of the relative growth in size of the LHb in humans and opens the intriguing possibility of an increased influence of limbic and striatal afferents into the LHb of humans.
Assuntos
Diencéfalo/anatomia & histologia , Habenula/anatomia & histologia , Vias Neurais/citologia , Neurônios/citologia , Receptores de GABA-B/metabolismo , Adulto , Idoso , Animais , Diencéfalo/citologia , Diencéfalo/metabolismo , Habenula/citologia , Habenula/metabolismo , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade , Proteínas do Tecido Nervoso/metabolismo , Vias Neurais/metabolismo , Neurônios/classificação , Neurônios/metabolismo , Ratos , Valores de Referência , Especificidade da Espécie , Adulto JovemRESUMO
Se presenta el caso clínico de una paciente joven que instala un síndrome hemorragíparo secundario a un déficit adquirido de la coagulación provocado por la aparición deanticuerpos antifactor VIII. El interés de la presente comunicación radica en que si bien la aparición de inhibidores de la coagulación en pacientes no hemofílicos es un fenómeno raro, se trata de un cuadro grave que puede determinar la muerte del paciente, por lo que es de capital importancia realizar un diagnóstico y tratamiento precoz, así como definir si constituye un trastorno primario o, por el contrario, responde a la existencia de una enfermedad subyacente que el clínico debe diagnosticar. Se realiza una descripción fisiopatológica a fin de facilitar la comprensión de los pasos que permiten arribar al diagnóstico así como una actualización de las herramientas terapéuticas disponibles. (AU)
Assuntos
Inibidores dos Fatores de Coagulação Sanguínea , Fator VIII , HemorragiaRESUMO
Se presenta el caso clínico de una paciente joven que instala un síndrome hemorragíparo secundario a un déficit adquirido de la coagulación provocado por la aparición deanticuerpos antifactor VIII. El interés de la presente comunicación radica en que si bien la aparición de inhibidores de la coagulación en pacientes no hemofílicos es un fenómeno raro, se trata de un cuadro grave que puede determinar la muerte del paciente, por lo que es de capital importancia realizar un diagnóstico y tratamiento precoz, así como definir si constituye un trastorno primario o, por el contrario, responde a la existencia de una enfermedad subyacente que el clínico debe diagnosticar. Se realiza una descripción fisiopatológica a fin de facilitar la comprensión de los pasos que permiten arribar al diagnóstico así como una actualización de las herramientas terapéuticas disponibles.
Assuntos
Fator VIII , Hemorragia , Inibidores dos Fatores de Coagulação SanguíneaRESUMO
Odor perception depends on the odorant-evoked changes on Mitral/Tufted cell firing pattern within the olfactory bulb (OB). The OB exhibits a significant "ongoing" or spontaneous activity in the absence of sensory stimulation. We characterized this ongoing activity by simultaneously recording several single neurons in the mitral cell layer (MCL) of anesthetized rats and determined the extent of synchrony and oscillations under nasal and tracheal breathing. We recorded 115 neurons and found no significant differences in the mean firing rates between both breathing conditions. Surprisingly, nearly all single units exhibited a long refractory period averaging 14.4 ms during nasal respiration that was not different under tracheal breathing. We found a small incidence (2% of neurons) of gamma band oscillations and a low incidence (8.1%) of correlated firing between adjacent MCL cells. During nasal respiration, a significant oscillation at the respiratory rate was observed in 12% of cells that disappeared during tracheal breathing. Thus, in the absence of odorants, MCL cells exhibit a long refractory period, probably reflecting the intrinsic OB network properties. Furthermore, in the absence of sensory stimulation, MCL cell discharge does not oscillate in the gamma band and the respiratory cycle can modulate the firing of these cells.
Assuntos
Potenciais de Ação/fisiologia , Neurônios/fisiologia , Bulbo Olfatório/citologia , Olfato/fisiologia , Animais , Feminino , Masculino , Odorantes , Bulbo Olfatório/fisiologia , Condutos Olfatórios/fisiologia , Oscilometria , Ratos , Ratos Sprague-Dawley , RespiraçãoRESUMO
Odor perception depends on the odorant-evoked changes on Mitral/Tufted cell firing pattern within the olfactory bulb (OB). The OB exhibits a significant "ongoing" or spontaneous activity in the absence of sensory stimulation. We characterized this ongoing activity by simultaneously recording several single neurons in the mitral cell layer (MCL) of anesthetized rats and determined the extent of synchrony and oscillations under nasal and tracheal breathing. We recorded 115 neurons and found no significant differences in the mean firing rates between both breathing conditions. Surprisingly, nearly all single units exhibited a long refractory period averaging 14.4 ms during nasal respiration that was not different under tracheal breathing. We found a small incidence (2% of neurons) of gamma band oscillations and a low incidence (8.1%) of correlated firing between adjacent MCL cells. During nasal respiration, a significant oscillation at the respiratory rate was observed in 12% of cells that disappeared during tracheal breathing. Thus, in the absence of odorants, MCL cells exhibit a long refractory period, probably reflecting the intrinsic OB network properties. Furthermore, in the absence of sensory stimulation, MCL cell discharge does not oscillate in the gamma band and the respiratory cycle can modulate the firing of these cells.
Assuntos
Animais , Masculino , Feminino , Ratos , Potenciais de Ação/fisiologia , Neurônios/fisiologia , Odorantes , Bulbo Olfatório/citologia , Olfato/fisiologia , Oscilometria , Bulbo Olfatório/fisiologia , Condutos Olfatórios/fisiologia , Ratos Sprague-Dawley , RespiraçãoRESUMO
Angiogenesis, the development of new blood vessels from the existing vascular network, may result as a consequence of the increase or decrease of proangiogenic or antiangiogenic factors, respectively. The tumor itself could up-regulate the production of angiogenic factors. Recently, we established that the steroidal drug betamethasone in low concentration inhibit the neovascularization promoted by TA3 Ts on CAM of chick embryos. We describe here the effects of the non-steroidal drug ketoprofen, alone or in association with betamethasone, on the angiogenesis promoted by TA3 Ts on CAM. The main finding reported here is that the formation of new blood vessels is strongly inhibited by low concentrations of ketoprofen. The association of both drugs produced a synergistic effect, significantly decreasing tumoral supernatant angiogenesis. It is known that steroidal anti-inflammatory drugs inhibit the enzymes required for the production of prostaglandins through a nuclear GR mediated mechanism. This may operate as a general mechanism in endothelial cells as well. Considering that the induction of COX 1 and COX2 are inhibited by ketoprofen, and that these enzymes are located in the stromal compartment of the CAM, we propose that its antiangiogenic effect may occur via inhibition of the two COX isoforms. In fact, we found that ketoprofen induced apoptosis in both the stromal fibroblast and endothelial cells. The potentiated effect of the combination of betamethasone and ketoprofen may have some therapeutic projections in the control of pathological angiogenesis.
Assuntos
Anti-Inflamatórios/farmacologia , Betametasona/farmacologia , Cetoprofeno/farmacologia , Neovascularização Fisiológica/efeitos dos fármacos , Animais , Anti-Inflamatórios não Esteroides/farmacologia , Embrião de Galinha , Sinergismo Farmacológico , Proteínas de Neoplasias , Neovascularização Patológica/etiologia , Neovascularização Patológica/prevenção & controle , Células Tumorais Cultivadas/efeitos dos fármacosRESUMO
Angiogenesis, the development of new blood vessels from the existing vascular network, may result as a consequence of the increase or decrease of proangiogenic or antiangiogenic factors, respectively. The tumor itself could up-regulate the production of angiogenic factors. Recently, we established that the steroidal drug betamethasone in low concentration inhibit the neovascularization promoted by TA3 Ts on CAM of chick embryos. We describe here the effects of the non-steroidal drug ketoprofen, alone or in association with betamethasone, on the angiogenesis promoted by TA3 Ts on CAM. The main finding reported here is that the formation of new blood vessels is strongly inhibited by low concentrations of ketoprofen. The association of both drugs produced a synergistic effect, significantly decreasing tumoral supernatant angiogenesis. It is known that steroidal anti-inflammatory drugs inhibit the enzymes required for the production of prostaglandins through a nuclear GR mediated mechanism. This may operate as a general mechanism in endothelial cells as well. Considering that the induction of COX 1 and COX2 are inhibited by ketoprofen, and that these enzymes are located in the stromal compartment of the CAM, we propose that its antiangiogenic effect may occur via inhibition of the two COX isoforms. In fact, we found that ketoprofen induced apoptosis in both the stromal fibroblast and endothelial cells. The potentiated effect of the combination of betamethasone and ketoprofen may have some therapeutic projections in the control of pathological angiogenesis