Search results for "Vertebra"
showing 10 items of 1220 documents
Upper thoracic-spine disc degeneration in patients with cervical pain.
2003
To study the relationship of upper thoracic spine degenerative disc contour changes on MR imaging in patients with neck pain. The relation between upper thoracic and cervical spine degenerative disc disease is not well established.One hundred and fifty-six patients referred with cervical pain were studied. There were 73 women and 77 men with a mean age of 48.6 +/- 14.6 years (range, 19 to 83 years). All MR studies were performed with a large 23-cm FOV covering at least from the body of T4 to the clivus. Discs were coded as normal, protrusion/bulge or extrusion.Degenerative thoracic disc contour changes were observed in 13.4% of patients with cervical pain. T2-3 was the most commonly affecte…
Is tubulin the sole antigen recognized by a putative anti-bursicon antibody?
1999
Abstract A 56-kDa polypeptide suspected to be the tanning hormone `bursicon' was analyzed using the monoclonal antibody (mAb) 01C10 of Song and Ma. We studied the beetle Tenebrio molitor, for which data on bursicon have been recently published. After purification by two-dimensional gel electrophoresis of brain proteins, the immunoreactive 56-kDa polypeptide was trypsinated and microsequenced. The obtained sequences revealed a high homology with α- and β-tubulins. In a complementary study, immunoreactive clones were isolated, using the 01C10 mAb, from a library in expression vector obtained from Drosophila melanogaster head cDNAs. Again, the isolated clones were found, after cDNA sequencing,…
A central nervous system-focused treatment approach for people with frozen shoulder: protocol for a randomized clinical trial
2019
Background: Frozen shoulder (FS) is a musculoskeletal condition of poorly understood etiology that results in shoulder pain and large mobility deficits. Despite some physical therapy interventions, such as joint mobilization and exercise, having shown therapeutic benefit, a definitive treatment does not currently exist. The aim of this study will be to compare the effectiveness of a central nervous system (CNS)-directed treatment program versus a standard medical and physical therapy care program on outcomes in participants with FS. Methods/design: The study is a two-group, randomized clinical trial with blinding of participants and assessors. Participants will be recruited via referrals fr…
Tomografía computarizada aplicada al estudio del esqueleto de los primeros vertebrados
2022
Los conodontos son un grupo de vertebrados extintos que poseen unas piezas mineralizadas llamadas elementos conodontales. Aunque son importantes herramientas para datar y correlacionar, su importancia paleobiológica ha sido históricamente descuidada debido a su pequeño tamaño y las técnicas de estudio disponibles. El presente trabajo pretende hacer una revisión actualizada del conocimiento paleobiológico del grupo a la luz del uso de las nuevas técnicas tomográficas.
Tomografía computarizada a nivel de C3 y dinamometría como técnicas de diagnóstico de sarcopenia en pacientes con cáncer de cabeza y cuello
2020
Introducción: Estudio piloto que determina el diagnóstico de sarcopenia mediante tomografía computarizada (TC) a nivel de la tercera vértebra cervical (C3) y dinamometría en pacientes con cáncer de cabeza y cuello. Comparación de la masa magra (MM) determinada mediante TC con técnicas clásicas de antropometría y dinamometría.Material y métodos: Se analizó la MM y el tejido adiposo mediante TC a nivel de C3 en 37 pacientes oncológicos mediante Unidades Hounsfield (UH). Posteriormente, se calculó el índice musculoesquelético (IME) y se determinó la fuerza prensora de mano para la determinación de sarcopenia. Por último, se comparó el IME mediante técnicas de valoración antropométrica clásica …
Potential of the Bacillus thuringiensis Toxin Reservoir for the Control of Lobesia botrana (Lepidoptera: Tortricidae), a Major Pest of Grape Plants▿
2006
ABSTRACT The potential of Bacillus thuringiensis Cry proteins to control the grape pest Lobesia botrana was explored by testing first-instar larvae with Cry proteins belonging to the Cry1, Cry2, and Cry9 groups selected for their documented activities against Lepidoptera. Cry9Ca, a toxin from B. thuringiensis , was the protein most toxic to L. botrana larvae, followed in decreasing order by Cry2Ab, Cry1Ab, Cry2Aa, and Cry1Ia7, with 50% lethal concentration values of 0.09, 0.1, 1.4, 3.2, and 8.5 μg/ml of diet, respectively. In contrast, Cry1Fa and Cry1JA were not active at the assayed concentration (100 μg/ml). In vitro binding and competition experiments showed that none of the toxins teste…
Transcriptional Activity and Nuclear Localization of Cabut, the Drosophila Ortholog of Vertebrate TGF-β-Inducible Early-Response Gene (TIEG) Proteins
2011
Background Cabut (Cbt) is a C2H2-class zinc finger transcription factor involved in embryonic dorsal closure, epithelial regeneration and other developmental processes in Drosophila melanogaster. Cbt orthologs have been identified in other Drosophila species and insects as well as in vertebrates. Indeed, Cbt is the Drosophila ortholog of the group of vertebrate proteins encoded by the TGF-s-inducible early-response genes (TIEGs), which belong to Sp1-like/Kruppel-like family of transcription factors. Several functional domains involved in transcriptional control and subcellular localization have been identified in the vertebrate TIEGs. However, little is known of whether these domains and fu…
Influence of geographical extent on typology- and model-based assessments of taxonomic completeness of river macroinvertebrates
2009
Summary 1. River InVertebrate Prediction and Classification System (RIVPACS)-type predictive models are increasingly used to assess the biological condition of freshwaters, but management schemes may also be based on a priori groupings of similar water bodies (typologies) to control for natural variation in biota. The two approaches may lead to disagreements of the biological status of a site, depending on, for example, the spatial scale at which assessments are conducted. 2. We used data from 96 reference and 134 potentially impacted sites from Western and Central Finland to compare RIVPACS-type models and a simple size-based typology of rivers for the assessment of taxonomic completeness …
Zooplankton assemblages in a Mediterranean restored area: patterns and processes of colonization and establishment
2016
Las charcas son sistemas excepcionalmente ricos en términos de biodiversidad, facilitan la conexión entre diferentes tipos de masas de agua y proveen de un gran número de servicios ecosistémicos como la posibilidad de investigar en torno a ellos. A pesar de su importancia ecológica, este tipo de sistemas acuáticos han sufrido y sufren una fuerte presión antrópica que deriva en numerosas amenazas. En este escenario, ha sido necesario el desarrollo de proyectos que restauren estos sistemas, tratando de recuperar las características ecológicas previas a su degradación. Durante el siglo XX, las charcas costeras mediterráneas sufrieron fuertes presiones, lo que llevó a la desaparición de muchas …
Trematodes in Mediterranean coastal habitats: Transmission, life cycles and detection Methods
2015
1. Introducción general Los metazoos trematodos (Platyhelminthes) son componentes ubicuos de los ecosistemas naturales entando temporal o permanentemente presentes en más de la mitad de las especies animales (Bush y col. 2001, Prietrock & Marcogliese 2003). Los parásitos trematodos pueden encontrarse en un amplio rango de condiciones y hábitats, teniendo un gran impacto en los procesos ecológicos: mediante la regulación de las poblaciones de hospedadores (Hudson y col. 2006) y afectando a la estructura de las comunidades y redes tróficas (ej. Mouritsen & Poulin 2002, Thompson y col. 2005, Lafferty y col. 2006, 2008). Son sobre todo, los parásitos que son transmitidos a través de la cadena t…