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3 results on '"Anillo fibroso"'

1. Variaciones anatómicas de la válvula mitral: Estudio preliminar.

Author

Otonelli, Luciano G., Di Paolo, Michelle, Chacaltana Villacorta, Andy, Parra, José S., and Sgarbanti, Victoria

Abstract

Introduction: The mitral valve is a dynamic anatomical structure with one function: to prevent blood regurgitation into the left atrium. Due to this, anatomic and morphometric knowledge of the valve is of vital importance. With the purpose of arriving at a normal morphologic pattern, it is the objective of this work to study the morphometric and morphological variations of the mitral valve annulus, and the distance between it and the free edge of the leaflets. Materials and methods: A total of 22 hearts from adult human cadavers were used for this investigation, all belonging to the III Chair of Anatomy, School of Medicine of Buenos Aires University. All cadavers were fixed by soaking in an aqueous solution of 7% (v/v) formalin during 7 days. Four of them were previously subject to an acrylic coloured latex injection for their arterial and venous system. Then they were dissected, approached and photographed. Results: Dissections show anatomical variations in the measure of the mitral valve annulus diameter, with changes in 77,27% of cases related to an average value. A pattern was observed as well, in which the longitude of the anterior leaflet was in 100% of the cases longer than the longitude of the posterior leaflet. Discussion: Based on the results obtained, a different morphometric in situ study is proposed from classics descriptions about the mitral valve, based on measures of diameter between one commissure to another. Also the study of a pattern conserved in all measures is proposed, confirming the predominance in longitude of the anterior leaflet above posterior leaflet. Conclusion: It is possible to confirm the existence of anatomical and morphometric changes in the architecture of the annulus of the mitral valve, influenced by variables such as age and sex, with prevalence in the adult sample. In addition, it is possible to determine the constant presence of a pattern in which the anterior leaflet exceeds the posterior leaflet in length. [ABSTRACT FROM AUTHOR]

Published
2016

2. SUMINISTRO DE ENERGÍA Y DEMANDA EN EL DISCO INTERVERTEBRAL

Author

Bardonova, Liudmila Andreevna, Sheikh, Omar, Malova, Irina Olegovna, Sorokovikov, Vladimir Alexeevich, and Byvaltsev, Vadim Anatolyevich

Subjects
Núcleo pulposo, Anillo fibroso, Terapia celular, Anel fibroso, Nucleus pulposus, Disco intervertebral, Energy metabolism, Metabolismo energético, Annulus fibrosus, Intervertebral disc, Cell therapy
Abstract

The intervertebral disc (IVD) is one of the parts of the body most commonly affected by disease, and it is only recently that we have come closer to understanding the reasons for its degeneration, in which nutrient supply plays a crucial role. In this literature review, we discuss the basic principles and characteristics of energy supply and demand to the IVD. Specifically, we review how different metabolites influence IVD cell activity, the effects of mechanical loading on IVD cell metabolism, and differences in energy metabolism of the annulus fibrous and nucleus pulposus cell phenotypes. Determining the factors that influence nutrient supply and demand in the IVD will enhance our understanding of the IVD pathology, and help to elucidate new therapeutic targets for IVD degeneration treatment. RESUMO O disco intervertebral (IVD) é uma das partes mais comuns do corpo e apenas recentemente nos aproximamos de compreender as razões da sua degeneração, em que o suprimento de nutrientes desempenha um papel crucial. Nesta revisão da literatura, discutimos os princípios básicos e as nuances do fornecimento e da demanda de energia para o IVD. Específicamente, analisamos como os diferentes metabólitos influenciam na atividade das células IVD, os efeitos da carga mecânica no metabolismo das células IVD, a diferença no metabolismo energético dos fenótipos das células fibrosas e do núcleo do pulposus anelar. A determinação de fatores que influenciam o suprimento e a demanda de nutrientes no IVD aumentará nossa compreensão da patologia IVD e ajudará a elucidar novos alvos terapêuticos para o tratamento da degeneração IVD. RESUMEN El disco intervertebral (IVD, por sus siglas en inglés) es una de las partes más comúnmente enfermas del cuerpo y solo recientemente nos acercamos a la comprensión de los motivos de su degeneración, de los cuales el suministro de nutrientes juega un papel crucial. En esta revisión de la literatura discutimos los principios básicos y los matices de la oferta y demanda de energía para el IVD. Específicamente, revisamos cómo los diferentes metabolitos influyen en la actividad de las células IVD, los efectos de la carga mecánica sobre el metabolismo de las células IVD y las diferencias en el metabolismo energético de los fenotipos de las células del anillo fibroso y el núcleo pulposo. La determinación de los factores que influyen en la oferta y demanda de nutrientes en el IVD mejorará nuestra comprensión de la patología IVD y ayudará a dilucidar nuevos objetivos terapéuticos para el tratamiento de la degeneración IVD.

Published
2018

3. RESULTADOS DEL TRATAMIENTO QUIRÚRGICO DE LA HERNIA DE DISCO LUMBAR UTILIZANDO UN DISPOSITIVO DE CIERRE ANULAR

Author

Anatoliy Andreevich Lutsik, Aleksandr Vladimirovich Krutko, Abdugafur Jabborovich Sanginov, and Evgenii Sergeevich Baykov

Subjects
medicine.medical_specialty, lcsh:Diseases of the musculoskeletal system, Anillo Fibroso, Dura mater, Bone plate, Discectomía, Intervertebral disc displacement, 03 medical and health sciences, 0302 clinical medicine, Lumbar, lcsh:Orthopedic surgery, medicine, Orthopedics and Sports Medicine, 030212 general & internal medicine, Diskectomy, business.industry, Discotomia, Modic changes, Deslocamento do Disco Intervertebral, medicine.disease, Placas Ósseas, Vertebra, Surgery, lcsh:RD701-811, medicine.anatomical_structure, Desplazamiento del Disco Intervertebral, Radicular pain, Intervertebral Disc Displacement, Placas Óseas, Neurology (clinical), lcsh:RC925-935, business, Annulus fibrosus, Anel Fibroso, 030217 neurology & neurosurgery
Abstract

Objective: The aim of the study was to investigate the clinical and radiological results of using the annular closure device in patients with lumbar disc herniation (LDH). Methods: The study involved 120 patients with LDH operated on by limited discectomy and annular closure using the Barricaid device. A literature review was conducted to evaluate the effectiveness of the annuloplasty. Results: All patients showed postoperative regression of the radicular pain syndrome and were mobilized on the day of surgery. The correlation between the removed nucleus pulposus and changes in DHI was studied by linear regression. The results revealed that disc height loss is directly correlated with the volume of removed nucleus pulposus (p

Published
2018

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