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1.
Rev. osteoporos. metab. miner. (Internet) ; 8(1): 5-14, ene.-mar. 2016. ilus, tab, graf
Article in Spanish | IBECS | ID: ibc-151228

ABSTRACT

Objetivos: Identificar microRNAs (miRNAs) diferencialmente expresados en muestras óseas con fractura osteoporótica respecto a huesos sanos. Material y métodos: Se extrajo RNA total a partir de hueso trabecular fresco del cuello femoral de mujeres sometidas a reemplazo de cadera, ya sea debido a fractura osteoporótica (n=6) o por artrosis en ausencia de osteoporosis (según la DMO) (n=6). Las muestras se hibridaron en un array de miRNAs y se realizaron diagramas de PCA y de mapa de calor. Para la comparación de los niveles de expresión, se fijó como significativo un umbral de cambio de >1,5 veces y un valor p <0,05 en la t de Student (corregido para múltiples pruebas). Resultados: Tanto los análisis de PCA como el mapa de calor mostraron una agrupación de las muestras según si eran de fractura o no. Se detectaron 790 miRNAs en las muestras de hueso, 82 de los cuales estaban alterados en las muestras osteoporóticas. Tras la validación en otro panel de 6 muestras osteoporóticas y 6 no osteoporóticas mediante PCR a tiempo real de los miRNAs más significativos, y para los que existía un ensayo disponible, se confirmaron los miRNAs miR-320a y miR-22-3p. Estos dos miRNAs se detectaron en cultivos de osteoblastos primarios, aunque no mantenían el mismo patrón de expresión que en las muestras de hueso total. Conclusiones: Hemos demostrado que existen diferencias en la expresión de miRNAs en muestras con fractura osteoporótica, lo que abre nuevas perspectivas para la investigación y diseño de nuevas terapias (AU)


Objectives: To identify microRNAs (miRNAs) differentially expressed in bone samples with osteoporotic fracture compared with healthy bones. Methods: Total RNA was extracted from fresh trabecular bone of the femoral neck of women undergoing hip replacement surgery, either because to osteoporotic fracture (n=6) or in the absence of osteoarthritis osteoporosis (based on BMD) (n=6). The samples were hybridized on an array of miRNAs and PCA diagrams and heat map were made. To compare expression levels, >1.5 times and a value p<0.05 Student's T test (corrected for multiple testing) was set as a threshold of significant change. Results: Both PCA analysis and the heat map showed a samples grouping whether there was fracture or not. 790 were detected miRNAs in bone samples, 82 of which were altered in the osteoporotic samples. After validation in another panel of 6 samples 6 osteoporotic and non-osteoporotic by PCR real time of the most significant miRNAs, and for which there was a test available, the miRNAs, miR-320a and miR-22-3p were confirmed. These two miRNAs were detected in cultures of primary osteoblasts, although they did not maintain the same pattern of expression in total bone samples. Conclusions: We have shown that there are differences in the expression of miRNAs in samples with osteoporotic fracture. This opens prospects for research and design of new therapies (AU)


Subject(s)
Humans , MicroRNAs/genetics , Gene Expression Profiling , Osteoporosis/genetics , Osteoporotic Fractures/genetics , Osteoblasts/physiology , Osteoclasts/physiology
2.
Rev. chil. obstet. ginecol ; 80(4): 289-296, ago. 2015. tab
Article in Spanish | LILACS | ID: lil-759063

ABSTRACT

ANTECEDENTES: El año 2006, la Organización Mundial de la Salud definió a la "salud sexual" como un estado de bienestar físico, emocional, mental y social en relación a la propia sexualidad. De este modo, corresponde a un concepto más amplio que la ausencia de malestares, disfunciones o enfermedades, relacionándose con un nivel de bienestar general. Pese a la relevancia del concepto, aún es escasa la evidencia empírica al respecto a nivel local. OBJETIVOS: El artículo analiza el concepto de "salud sexual" a nivel de población general en Chile. MÉTODOS: Se diseñó una muestra probabilística, polietápica y estratificada en el Gran Santiago, encuestándose a 767 personas mayores de 18 años, siguiendo la metodología de autorreporte de hogares. RESULTADOS: El estudio evidencia diferencias según género y edad en la mayor parte de las variables relativas a la satisfacción sexual y a conductas sexuales seguras. CONCLUSIÓN: Se concluye que los hombres inician su vida sexual más tempranamente, tienen más parejas sexuales y reportan mayor satisfacción sexual que las mujeres, con excepción de la cohorte más joven. Ellas, a su vez, declaran mayores niveles de protección y cuidado de la vida sexual.


BACKGROUND: In 2006, the World Health Organization endorsed the concept of "sexual health" as a state of physical, emotional, mental and social well-being in relation to sexuality. Thus, it corresponds to a broader concept that the absence of disease, dysfunction or infirmity, being related to a general level of well-being. Despite the relevance of the concept, locally, there is still scarce empirical evidence about it. AIMS: The article analyses the concept of "sexual health" among the Chilean general population. Methods: In order to achieve this objective, a probabilistic, polyphasic and stratified sample was designed for the province of Santiago, being surveyed 767 people over 18 years, through a self-reported method in their own households. RESULTS: The study shows differences by gender and age in both sexual satisfaction and safe sexual behaviours. CONCLUSION: It is possible to conclude that men begin their sexual life earlier, have more sexual partners and report higher sexual satisfaction than women, except for the youngest cohort. Women, in turn, report higher levels of protection and care of sexual life.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Young Adult , Personal Satisfaction , Sexual Behavior/statistics & numerical data , Sexual Health , Orgasm , Sexual Partners , Chile/epidemiology , Surveys and Questionnaires , Age Factors , Coitus , Age Distribution , Contraception Behavior , Self Report
3.
Actas Esp Psiquiatr ; 37(1): 57-9, 2009.
Article in Spanish | MEDLINE | ID: mdl-18568454

ABSTRACT

Factitious disorder is defined by the intentional production or feigning of physical or psychological symptoms with the objective of assuming the patient role. It is frequently difficult to adequately diagnose this disorder, above all, when the faked symptoms are those of a psychological or a psychiatric disorder. In these cases, there is often high comorbidity with other mental disorders, thus making it difficult to differentiate between real and factitious symptoms. Moreover, the lack of clear objective markers makes assessing the diagnosis even more difficult. In this article, we have aimed to clarify how a correct diagnosis of factitious disorder with psychological symptoms can be reached, to observe the different therapeutic strategies described in the literature and to analyze the utility of each one of them in a given case report.


Subject(s)
Factitious Disorders/diagnosis , Factitious Disorders/psychology , Adult , Female , Humans
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