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Análisis Morfométrico del Efecto del Láser Infrarrojo sobre Hepatocitos de Rata International Journal of Morphology
Cornejo,R; Matamala,F; Silva,H; Garrido,O.
El láser infrarrojo emitido por el diodo Arsenurio de Galio (904 nm) proporciona terapia a lesiones articulares por su acción analgésica, cicatrizante y antiinflamatoria, promoviendo a nivel celular síntesis de ATP mitocondrial, modulación de canales de calcio, activando el proceso mitótico e incremento en la síntesis de DNA y de proteínas. Para determinar las dosis que estimulen componentes celulares involucrados en síntesis proteica, del hígado de ratas fueron tomadas muestras de tejido normal e irradiado mediante láser infrarrojo con 1, 2, 4, 8 y 16 Joules/cm² durante 15 días consecutivos. Fueron tratadas para microscopía electrónica de transmisión y se obtuvieron micrografías con aumentos de 10.000 X. Se realizaron estudios morfométricos,...
Tipo: Journal article Palavras-chave: Hepatocitos; Láser Morfometría Ultraestructura.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300031
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Análisis Morfométrico del Número de Odontoblastos en Recubrimientos Directos con Hidróxido de Calcio y Propóleos en Canes International Journal of Morphology
Roig,Andrés; Henríquez,Jorge; Alvear,Marysol; Salazar,Luis A.
El propóleos se ha utilizado en medicina desde épocas antiguas, una de sus indicaciones en medicina oral y odontológica es como material de recubrimiento directo. Así, el objetivo de este estudio fue cuantificar la neoformación odontoblástica en piezas dentarias de canes en recubrimientos directos. Se realizaron perforaciones en un total de 12 piezas dentarias, la mitad de las cuales fueron recubiertas con propóleos y la otra mitad con hidróxido de calcio. En todos los casos se obturaron las piezas dentarias con cemento de vidrio-ionómero. Al cabo de dos semanas, se realizaron las extracciones de las piezas dentarias, fijándolas en formalina tamponada; se efectuaron cortes histológicos de las piezas, los cuales se tiñeron con hematoxilina-eosina, con el...
Tipo: Journal article Palavras-chave: Propóleos; Neoformación odontoblástica; Recubrimiento Directo; Hidróxido de Calcio.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000300021
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Análisis Morfométrico Ultraestructural de Células Normales de Glándula Parótida de Rata International Journal of Morphology
Cornejo,R; Garrido,O; Matamala,F; Silva,H; Mardones,A; Lagos,K; Hueichapan,O.
A partir de 10 ratas hembras con un peso aproximado de 250 g y 4 meses de vida, fueron obtenidas quirúrgicamente muestras de glándula parótida las que se trataron con técnicas de microscopía electrónica de transmisión para posteriormente obtener microfotografías de células parotideas con aumentos finales de hasta 21300 X. En las citadas microfotografías se aplicaron técnicas morfométricas con el objetivo de cuantificar las fracciones volumétricas que los distintos componentes ocupan en estas células normales, describiendo de esta manera sus volúmenes y relacionándolos con la funcionalidad que desempeñan en esta célula normal. Se evaluaron las fracciones volumétricas pertenecientes a: citoplasma, núcleo, mitocondrias, retículo endoplasmático rugoso (RER),...
Tipo: Journal article Palavras-chave: Morfometría; Glándula parótida; Célula acinar.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000400010
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ANÁLISIS MORFOMÉTRICO Y ULTRAESTRUCTURAL DE COMPONENTES ASOCIADOS A SÍNTESIS PROTEICA EN CÉLULAS MAMARIAS NORMALES Y TRANSFORMADAS International Journal of Morphology
Cornejo U,Ricardo.
Las células mantenidas en cultivo que conservan sus características propias, constituyen un excelente modelo para el estudio de las modificaciones fisiológicas, morfológicas y morfométricas que caracterizan el proceso biológico de la transformación celular. La línea HC11 corresponde a células de epitelio mamario de rata, normales, mantenidas en cultivo, las cuales estimuladas a proliferar con factor de crecimiento epidérmico originan el grupo celular HC11 GM. Cuando estas células normales y proliferantes son transfectadas con el oncogen ras, se determina la generación de un tipo celular transformado, el cual por efecto de las sucesivas mitosis deriva en el grupo celular HC11ras. Estudios de microscopía electrónica, morfológicos y morfométricos permiten...
Tipo: Journal article Palavras-chave: Transformación celular; Morfometría; Glándula mamaria.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022004000300008
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Análisis Multivariado Aplicado a la Etapa de Deshidratación en la Técnica de Plastinación del Riñón de Caballo International Journal of Morphology
Rivera,M. C; Bonino,F; Fioretti,C; Galán,M; Gigena,S; Moine,R; Mouguelar,H; Natali,J; Quinteros,R.
La Plastinación es la técnica más moderna para la conservación de piezas anatómicas y especímenes. Esta técnica consta de cuatro etapas: fijación, deshidratación, impregnación forzada y curado. Este trabajo pretende mejorar la eficiencia en la producción de órganos plastinados mediante la técnica de Plastinación estándar denominada S 10. Se utilizaron riñones de equinos mestizos criollos provenientes del Frigorífico Aimar S/A, ubicado en la zona rural de Río Cuarto. Luego de realizar la fijación del órgano con formalina se procedió a deshidratarlo. La deshidratación se llevó a cabo en tres sub-etapas donde en cada una de ellas se trabajó a la misma temperatura y se utilizó como solvente una solución de acetona en diferentes concentraciones. Las mediciones...
Tipo: Journal article Palavras-chave: Plastinación; Acetona; Deshidratación; Riñones; Caballo.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300035
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Analysis and Clinical Importance of Superficial Arterial Palmar Irrigation and its Variants over 86 Cases International Journal of Morphology
Ottone,Nicolás Ernesto; Prum,Natalia; Dominguez,Mario; Blasi,Esteban; Medan,Carlos; Shinzato,Sergio; Finkelstein,Diana; Bertone,Vicente Hugo.
The classic description of the hand's superficial palmar arch is based on the anastomosis among the ulnar and radiopalmar arteries, a branch of the radial artery. However, the arch formation is highly variable regarding the size of the arteries that make it up and due to the existence of branches coming from other arteries and adding up as tributary to it. The objective of this paper is to classify these possible varieties, to define the formation of the arch, the reasons for its variable arrangement and the importance of its clinical and surgical applications. 86 formalized hands were dissected at 40%. There is prevalence concerning the size of the ulnar artery, with or without an arch. The anatomic knowledge of the variability in the arch formation...
Tipo: Journal article Palavras-chave: Superficial palmar arch; Anatomy; Anatomical variations; Hand.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000100022
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Analysis of Behavior of Forces in a Pelvis-Soft Tissue Mechanical Model International Journal of Morphology
Gayol-Mérida,Diana Alicia; Enríquez-Rivera,Luis Alberto; Araujo-Monsalvo,Víctor Manuel; Alemán-Pérez,Aylenid; Baez-Rivas,Livier; Domínguez-Hernández,Víctor Manuel.
Pressure ulcers are tissue damage resulting from the constant pressure on the underlying soft tissue to bony prominences for long periods. Some of the most common ulcers are developed at the ischial tuberosities area (ITs). It has been found that stresses produced in the underlying tissue to the ITs may exceed 5 to 11 times the surface stresses, making it necessary to estimate the forces generated between the soft tissue and the ITs. However, it is not possible to determine these stresses in vivo in a patient, due to ethical reasons. This paper presents a mechanical model of the pelvis-soft tissue in order to study the behavior of contact forces. The model simulates the load on the ITs of a male subject of 70 kg weight and 1.70 m height, which were...
Tipo: Journal article Palavras-chave: Pressure ulcer; Pressure sensor; Mechanical model.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000300028
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Analysis of Bone Variations of the Occipital Bone in Man International Journal of Morphology
da Mata,João Roberto; da Mata,Fabiana Ribe; Aversi-Ferreira,Tales Alexandre.
Inadequate ossification of the interparietal region induces the appearance of interparietal and wormian bones, also associated with genetic factors. The formation of the interparietal bone depends on the separation of the intermediate segment from the lateral plate by the transverse occipital suture, which means that this bone is formed by the medial and lateral plates. Wormian interparietal bones or epactal bones are located within the interparietal region, being single or multiple, and are located in the upper central region of the interparietal region, the sutural bones, however, are formed from additional ossification centers that can occur in near sutures. The aim of this work was to macroscopically evaluated the presence of changes in the structure...
Tipo: Journal article Palavras-chave: Skull; Human; Interparietal bone; Sutural bone.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000100035
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Analysis of Dental Arch Dimensions in Three Colombian Ethnic Groups International Journal of Morphology
Padilla,M; Tello,L; Moreno,F; Osorio,J. C; Bedoya,A.
The purpose of this study was to compare dental arch transversal and anteroposterior dimensions in three ethnic groups from Colombia. A digital caliper was used to take 16 transversal and two sagittal measurements, 9 for the upper jaw and 9 for the lower jaw. The sagittal measure determining arch length was drawn from a mesial line traced from first right permanent molar to first left permanent molar, and a perpendicular line from the point of contact between central incisive teeth, both for the upper and lower jaw. The dimensions of upper dental arch in the three ethnic groups showed differences in intercanine distance, as well as between premolar and between molar teeth. The same differences were found for lower dental arches. The populations evaluated...
Tipo: Journal article Palavras-chave: Dental arch; Arch length; Ethnic groups.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000100015
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Analysis of Fetal and Placental Development in Rats after Administration of Hydroalcoholic Extract from the Root of Petiveria alliacea L. (Phytolaccaceae) International Journal of Morphology
Maia,Carina Scanoni; Teixeira,Valéria Wanderley; Teixeira,Álvaro Aguiar Coelho; Pontes Filho,Nicodemos Teles.
We investigated the effect of hydroalcoholic extract the Petiveria alliacea root on fetal and placental development female rats pregnancy. Thirty female rats were mated and divided in groups: I - rats treated with placebo and sacrificed on the 7th day; II - rats treated with hydroalcoholic extract and sacrificed on the 7th day; III - rats treated with placebo and sacrificed on the 14th day; IV - rats treated with hydroalcoholic extract and sacrificed on the 14th day; V - rats treated with placebo for analysis of the offspring; VI - rats treated with hydroalcoholic extract for analysis of the offspring. The extract was administered by gavage in the dosage of 18mg/kg body wt., in 5th day of pregnancy. The implantation sites and placenta were fixed in Bouin...
Tipo: Journal article Palavras-chave: Petiveria alliacea; Uterus; Placenta; Hydroalcoholic extract.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000100023
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Analysis of MR Imaging of Wrists in Female Patients with Carpal Tunnel Syndrome and Healthy Controls International Journal of Morphology
Karabulut,Özlen; Tuncer,Mehmet Cudi; Karabulut,Zülfü; Güzel,Ebru.
The objective of this study was to evaluate morphological changes of the median nerve in patients with carpal tunnel syndrome (CTS) and healthy controls, to correlate the MRI findings of wrists. This study compared not only morphological changes of the median nerve and also displayed descriptively structures in carpal tunnel between patients diagnosed with idopathic CTS and healthy controls. Our study involved 60 hand, 30 of hand were evaluated diagnosed with idiopathic CTS and 30 hand as healthy controls bilaterally. Two provocative tests (Phalen's and Tinel's test) were performed on each hand for both the patient group (60 wrist) and the control group (60 wrist). With regard to Phalen and Tinel's test results, 24 and 26 wrists were excluded from patient...
Tipo: Journal article Palavras-chave: MR imaging; Carpal tunnel syndrome; Cross-sectional area; Signal intensity; Median nerve.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300025
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Analysis of Myenteric Neurons of the Cecum of Diabetic Rats After Supplementation with Ascorbic Acid International Journal of Morphology
Zanoni,Jacqueline Nelisis; Pereira,Priscila Goncalves Cardoso; dos Santos Pereira,Marli Aparecida.
The objective of this work was to investigate the neuroprotective action of the ascorbic acid over the myenteric neurons in the cecum of Wistar rats, four months after induction of the diabetes mellitus experimental with streptozotocin. Three groups with five rats each were used: C- controls, D- diabetic, DA- diabetic treated with ascorbic acid. For evidentiation of the myenteric neurons was carried out to Giemsa's technique. Were evaluated the areas of cell bodies of 500 neurons in each group studied. The quantitative analysis was carried out in an area of 16.6 mm2 in each cecum studied. In the animals diabetic observed elevation of the glycemia and glycated hemoglobin. The supplementation with ascorbic acid was effective under the myenteric neurons of...
Tipo: Journal article Palavras-chave: Ascorbic acid; Diabetes mellitus; Oxidative stress; Cecum; Streptozotocin.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000200013
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Analysis of Palatal Rugae Morphology Before and After Orthodontic Treatment by a Digital Image Recognition System International Journal of Morphology
Xiu-Ping,Wu; Jian-Ning,Han; Pan,Fen; Yu-Jin,Wan; Li,Bing.
To analyze the accuracy rate of a digital image recognition system in matching the palatal rugae Morphology after orthodontic treatment, before orthodontic treatment and to provide theoretical evidence for individual identification in the field of forensic dentistry. High-resolution digital images of the palatal rugae were taken under particular conditions from each patient before and after orthodontic treatment. Features of each digital image were extracted using a digital image recognition system and included in the palatal rugae database. Using an MATLAB software system, information matching of the palatal rugae was performed. From the matching results, the accuracy rate of individual identification of orthodontic patients was 100 %, with a Euclidean...
Tipo: Journal article Palavras-chave: Forensic anthropology; Forensic stomatology; Palatal rugae; Identification; Orthodontic treatment.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200005
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Analysis of the Condyle, Articular Fossa and Mandibular Ramus in Subjects with Active Condylar Hyperplasia International Journal of Morphology
Muñoz,Pablo; Goulart,Douglas Rangel; Olate,Sergio; de Moraes,Márcio; Navarro,Pablo; Fariña,Rodrigo.
Facial asymmetry is relatively common, but it becomes a disease when condylar hyperplasia is involved. The purpose of this investigation was to describe and compare the morphological characteristics of hyperplastic condyles to their non-hyperplastic contralateral side. Fifteen subjects aged between 14 and 29 years with facial asymmetry and diagnosed with unilateral condylar hyperplasia were studied using cone-beam computerized tomography. Linear measurements were taken of the condylar morphology on the sagittal and coronal planes, establishing the size of the articular fossa, mandibular ramus, and other aspects. Sagittal condylar measurements showed significant differences (p=0.028) between the groups (hyperplastic side v/s non-hyperplastic side); ramus...
Tipo: Journal article Palavras-chave: Facial asymmetry; Condylar hyperplasia; Facial deformity.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000300051
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Analysis of the Height of Lingual Vallates Papillae in Brazilian Individuals International Journal of Morphology
de Oliveira,Emanuelle Ribeiro; Accioly Lins Amorim,Marleyne José Afonso; Bezerra de Sá,Fabrício; de Albuquerque Nogueira,Romildo; de Amorim Júnior,Adelmar Afonso; Martins Araújo,Bruno; Fernandes Veloso Neto,Humberto; Vieira de Mello,Roberto José.
The vallates papillae lingual are located in the surface of the tongue in a area denominated of V lingual and it presents cells gustatory gathered in gustatory buttons. This research evaluated the height papilar in relation to the surface of the tongue of 519 lingual vallates papillae. 45 human tongue samples were selected, of both sexes, inside of the 40-50 year-old age group, obtained from necropsias accomplished in the Service of Verification of Deaths (S.V.O.) of UFPE/Secretaria of Health of the state of Pernambuco, in the city of Recife. The samples were classified different height levels accordingly in relation to the surface of the tongue, not establishing the exact height, where there was the predominance of the height above the lingual surface
Tipo: Journal article Palavras-chave: Vallates papillae; Tongue; Anatomy.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000100008
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Analysis of the Lingula Shapes in Macerated Mandibles of Brazilian Individuals International Journal of Morphology
Alves,Nilton; Deana,Naira Figueiredo.
The lingula of the mandible is a bone projection that limits medially the mandibular foramen, which is the region where the inferior alveolar neurovascular bundle penetrates. The lingula is an important anatomical landmark used in maxillofacial surgeries and to block the inferior alveolar nerve. The aim of this study was to analyze the different types of lingula found in mandibles of Brazilian individuals, considering aspects such as gender and race. One hundred thirty-two macerated mandibles of Brazilian adult individuals of both sexes, black and white skin colors, were used. The lingula was classified into four types: triangular, truncated, nodular and assimilated. The data were analyzed using Chi-square test and Fisher's exact test. The truncated shape...
Tipo: Journal article Palavras-chave: Anatomy; Lingula; Mandible; Inferior alveolar nerve.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000100007
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Analysis of the NMDA in Focal Cerebral Ischemia in Rats International Journal of Morphology
Tirapelli,D. P. C; Carlotti Jr,C. G; Leite,J. P; Lizarte,F. S. N; Tirapelli,L. F; Colli,B. O.
NMDAR (N-methyl-D-aspartate receptor) is one subtype of ionotrophic glutamate receptor which is extensively distributed in the central nervous system (CNS). In the mammalian CNS, NMDAR serves prominent roles in the pathophysiologic process of cerebral ischemia. This study aimed to investigate the pattern of expression of protein and gene of the excitatory neurotransmitter NMDAR in experimental focal cerebral ischemia and the hole of neuroprotection with hypothermia and ketoprofen. 120 rats were randomly divided into 6 groups (20 animals each): control - no surgery; sham - simulation of surgery; ischemic - focal ischemia for 1 hour, without reperfusion; ischemic + intraischemic hypothermia; ischemic + previous intravenous ketoprofen, and ischemic +...
Tipo: Journal article Palavras-chave: NMDA expression; Cerebral ischemia; Neuroprotection; Hypothermia and ketoprofen.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000300035
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Anatomía Cardíaca de Pontoporia blainvillei International Journal of Morphology
Pérez,William; Lima,Martin.
El objetivo de este estudio fue describir la conformación interna y externa y la irrigación del corazón del delfín franciscana de la Plata (Pontoporia blainvillei) para lo cual fueron disecados 12 corazones. El pericardio se fijaba caudalmente al diafragma, ventralmente al músculo transverso torácico y, lateralmente, a las costillas y músculos intercostales. El corazón era aplastado dorsoventralmente, su base era craneal, su ápex era compartido por ambos ventrículos. El ventrículo izquierdo era de pared gruesa, mientras que la del ventrículo derecho más delgada y depresible. La cara ventral correspondía a la cara auricular y la cara dorsal a la cara atrial de la Nomina Anatomica Veterinaria, 2005 (NAV). En la conformación interior del atrio derecho...
Tipo: Journal article Palavras-chave: Delfín del Plata; Anatomía cardíaca; Cardiología; Arterias coronarias.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000400010
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Anatomía Comparada del Neurocráneo y el Encéfalo de la Raya Mariposa Gymnura micrura (Batoidea: Gymnuridae) International Journal of Morphology
Kobelkowsky,Abraham.
Mediante la comparación del neurocráneo de la "raya mariposa" Gymnura micrura con especies representantes de cinco familias de Batoidea, se reconoce que corresponde al patrón anatómico del orden Myliobatiformes, por la ausencia del rostro, la presencia de una sola fontanela y el mayor desarrollo de los procesos postorbitarios. La especie en estudio difiere de los Urotrygonidae y Dasyatidae por tener los procesos postorbitarios subdivididos. La organización del encéfalo de G. micrura corresponde al patrón anatómico de los Batoidea, sin embargo, a diferencia de los Rhinobatidae, Urotrygonidae y Dasyatidae, el cerebelo es simétrico; en contraste con los Myliobatidae los hemisferios cerebrales son reducidos; y la principal diferencia con relación a los...
Tipo: Journal article Palavras-chave: Elasmobranchii; Cráneo; Cerebro; Nervios craneales; Órganos sensoriales.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200042
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Anatomía de la Cabeza Femoral Humana: Consideraciones en Ortopedia, Parte I. Anatomía y Relaciones Antropométricas del Fémur Proximal International Journal of Morphology
Álvarez San Martín,Raúl; Velutini Kochen,José Antonio.
Las variantes antropométricas son aspectos que han servido como sustento científico para el entendimiento de la vasta patología que afecta a la articulación coxofemoral y para el desarrollo tanto de implantes de reemplazo articular como de técnicas de reconstrucción ósea. En esta revisión se planea exponer los aspectos morfológicos macroscópicos de la cabeza femoral en relación al extremo proximal del fémur, para describir las características anatómicas y funcionales que hacen de ésta, uno de los sitios anatómicos de mayor importancia en la cirugía ortopédica.
Tipo: Journal article Palavras-chave: Cabeza femoral; Fémur proximal; Variantes anatómicas; Macroestructura; Ortopedia.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000200016
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