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1.
Int. j. morphol ; 42(4): 991-998, ago. 2024. ilus, tab
Artigo em Inglês | LILACS | ID: biblio-1569278

RESUMO

SUMMARY: This study aims to examine the hand morphometry of healthy young individuals from different countries and investigate the differences between countries in typing of hand based on the morphometric values obtained. In the study, 16 different parameters, including two surface areas and 14 lengths, were measured from the right hand of 579 volunteers (250 females, 329 males) from 7 different countries (Turkey, Chad, Morocco, Gabon, Kazakhstan, Senegal and Syria). Factor analysis was performed on the parameters, cluster analysis was performed according to the factor score obtained, and the hand types in the study were determined. As a result of the study, four different hand types were defined, and the distribution of these types according to countries was analyzed. All parameters showed significant differences between countries in both genders (p<0.05). According to the results of the study, there was a difference between male and female hand types between countries. In females, the type 1 hand type was found only in Gabon, the type 2 hand type was found only in Senegal, the type 3 hand type was found in Turkey, Morocco and Kazakhstan, while the type 4 hand type was significantly distributed in Senegal and Gabon (X2 =104.62; df=18, p<0.05). In males, type 1 hand type was found in Turkey, type 2 hand type in Senegal and Gabon, type 3 hand type in Turkey, while type 4 hand type was significantly distributed in Morocco and Kazakhstan (X2 =76.964; df=18, p<0.05).


Este estudio tuvo como objetivo examinar la morfometría de la mano de individuos jóvenes sanos de diferentes países e investigar las diferencias en la mecanografía de la mano entre países en función de los valores morfométricos obtenidos. En el estudio, se midieron 16 parámetros diferentes, incluidas dos superficies y 14 longitudes, de la mano derecha de 579 voluntarios (250 mujeres, 329 hombres) de 7 países diferentes (Turquía, Chad, Marruecos, Gabón, Kazajstán, Senegal y Siria). Se realizó un análisis factorial de los parámetros, un análisis de conglomerados según la puntuación factorial obtenida y se determinaron los tipos de manos en el estudio. Como resultado, se definieron cuatro tipos diferentes de manos y se analizó la distribución de estos tipos según países. Todos los parámetros mostraron diferencias significativas entre países en ambos sexos (p<0,05). Según los resultados del estudio, hubo una diferencia entre los tipos de manos de los hombres y de las mujeres entre países. En las mujeres, el tipo de mano tipo 1 se encontró solo en Gabón, el tipo de mano tipo 2 se encontró solo en Senegal, el tipo de mano tipo 3 se encontró en Turquía, Marruecos y Kazajstán, mientras que la mano tipo 4 se distribuyó significativamente en Senegal y Gabón (X2=104,62; gl=18, p<0,05). En los hombres, el tipo de mano tipo 1 se encontró en Turquía, el tipo de mano tipo 2 en Senegal y Gabón, el tipo de mano tipo 3 en Turquía, mientras que la mano tipo 4 se distribuyó significativamente en Marruecos y Kazajstán (X2=76,964; gl=18, p <0,05).


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Adulto Jovem , Mãos/anatomia & histologia , Análise por Conglomerados , Análise de Variância , Análise Fatorial , Caracteres Sexuais , Antropologia
2.
Int. j. morphol ; 42(3): 826-832, jun. 2024. ilus, tab
Artigo em Inglês | LILACS | ID: biblio-1564601

RESUMO

SUMMARY: The study aims to demonstrate the success of deep learning methods in sex prediction using hyoid bone. The images of people aged 15-94 years who underwent neck Computed Tomography (CT) were retrospectively scanned in the study. The neck CT images of the individuals were cleaned using the RadiAnt DICOM Viewer (version 2023.1) program, leaving only the hyoid bone. A total of 7 images in the anterior, posterior, superior, inferior, right, left, and right-anterior-upward directions were obtained from a patient's cut hyoid bone image. 2170 images were obtained from 310 hyoid bones of males, and 1820 images from 260 hyoid bones of females. 3990 images were completed to 5000 images by data enrichment. The dataset was divided into 80 % for training, 10 % for testing, and another 10 % for validation. It was compared with deep learning models DenseNet121, ResNet152, and VGG19. An accuracy rate of 87 % was achieved in the ResNet152 model and 80.2 % in the VGG19 model. The highest rate among the classified models was 89 % in the DenseNet121 model. This model had a specificity of 0.87, a sensitivity of 0.90, an F1 score of 0.89 in women, a specificity of 0.90, a sensitivity of 0.87, and an F1 score of 0.88 in men. It was observed that sex could be predicted from the hyoid bone using deep learning methods DenseNet121, ResNet152, and VGG19. Thus, a method that had not been tried on this bone before was used. This study also brings us one step closer to strengthening and perfecting the use of technologies, which will reduce the subjectivity of the methods and support the expert in the decision-making process of sex prediction.


El estudio tuvo como objetivo demostrar el éxito de los métodos de aprendizaje profundo en la predicción del sexo utilizando el hueso hioides. En el estudio se escanearon retrospectivamente las imágenes de personas de entre 15 y 94 años que se sometieron a una tomografía computarizada (TC) de cuello. Las imágenes de TC del cuello de los individuos se limpiaron utilizando el programa RadiAnt DICOM Viewer (versión 2023.1), dejando solo el hueso hioides. Se obtuvieron un total de 7 imágenes en las direcciones anterior, posterior, superior, inferior, derecha, izquierda y derecha-anterior-superior a partir de una imagen seccionada del hueso hioides de un paciente. Se obtuvieron 2170 imágenes de 310 huesos hioides de hombres y 1820 imágenes de 260 huesos hioides de mujeres. Se completaron 3990 imágenes a 5000 imágenes mediante enriquecimiento de datos. El conjunto de datos se dividió en un 80 % para entrenamiento, un 10 % para pruebas y otro 10 % para validación. Se comparó con los modelos de aprendizaje profundo DenseNet121, ResNet152 y VGG19. Se logró una tasa de precisión del 87 % en el modelo ResNet152 y del 80,2 % en el modelo VGG19. La tasa más alta entre los modelos clasificados fue del 89 % en el modelo DenseNet121. Este modelo tenía una especificidad de 0,87, una sensibilidad de 0,90, una puntuación F1 de 0,89 en mujeres, una especificidad de 0,90, una sensibilidad de 0,87 y una puntuación F1 de 0,88 en hombres. Se observó que se podía predecir el sexo a partir del hueso hioides utilizando los métodos de aprendizaje profundo DenseNet121, ResNet152 y VGG19. De esta manera, se utilizó un método que no se había probado antes en este hueso. Este estudio también nos acerca un paso más al fortalecimiento y perfeccionamiento del uso de tecnologías, que reducirán la subjetividad de los métodos y apoyarán al experto en el proceso de toma de decisiones de predicción del sexo.


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Adulto Jovem , Tomografia Computadorizada por Raios X , Determinação do Sexo pelo Esqueleto , Aprendizado Profundo , Osso Hioide/diagnóstico por imagem , Valor Preditivo dos Testes , Sensibilidade e Especificidade , Osso Hioide/anatomia & histologia
3.
Anthropol Anz ; 81(4): 361-371, 2024 Aug 23.
Artigo em Inglês | MEDLINE | ID: mdl-38445765

RESUMO

Sex estimation is leading to determine the biological profile in forensic medicine. The aim of this study is to research the effectiveness of logistic regression (LogR) and discriminant function analysis (DFA) to create sex estimation models on femur images obtained with Computed Tomography (CT) angiography and to address the differences of femur, which show sexual dimorphism, among populations. All parameters were measured on three planes by adjusting the 300 CT angiography images from 150 women and 150 men that focused on the left femur to the orthogonal plane with standard magnification. The subgroup, which included 30 images randomly generated from these images, was measured twice with an interval of 3 weeks by the first radiologist and once by the second radiologist. According to the Fisher's Linear Discriminant analysis, which was evaluated with ten parameters in the study, it was concluded that the power of discriminating women was 96.7%, the power of discriminating men was 98.7%, and the total discrimination power was 97.7%; these results were 98%, 99.3%, and 98.7%, respectively according to LogR. In this study, DFA and LogR analysis showed that femur provided a very good rate of sexual dimorphism. A database belonging to the Turkish population was created for the femur, allowing for comparison between populations.


Assuntos
Fêmur , Determinação do Sexo pelo Esqueleto , Humanos , Masculino , Fêmur/diagnóstico por imagem , Fêmur/anatomia & histologia , Feminino , Turquia , Determinação do Sexo pelo Esqueleto/métodos , Adulto , Análise Discriminante , Pessoa de Meia-Idade , Adulto Jovem , Caracteres Sexuais , Idoso , Modelos Logísticos , Angiografia por Tomografia Computadorizada/métodos , Antropologia Física
4.
Folia Morphol (Warsz) ; 83(1): 182-191, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-36794687

RESUMO

BACKGROUND: This study aimed to evaluate the congenital anomalies of ribs in the Turkish population using multi-detector computed tomography (CT) and to reveal the prevalence and distribution of these anomalies according to sexes and body sides. MATERIALS AND METHODS: This study included 1120 individuals (592 male, 528 female) over 18 who presented to our hospital with a suspicion of COVID-19 and who had thoracic CT. Anomalies such as a bifid rib, cervical rib, fused rib, Srb anomaly, foramen rib, hypoplastic rib, absent rib, supernumerary rib, pectus carinatum, and pectus excavatum, which were previously defined in the literature, were examined. Descriptive statistics were performed with the distribution of anomalies. Comparisons were made between the sexes and body sides. RESULTS: A prevalence of 18.57% rib variation was observed. Females had 1.3 times more variation than males. Although there was a significant difference in the distribution of anomalies by sex (p = 0.000), there was no difference in terms of body side of anomaly (p > 0.05). The most common anomaly was the hypoplastic rib, followed by the absence of a rib. While the incidence of the hypoplastic rib was similar in females and males, 79.07% of the absent ribs was seen in females (p < 0.05). The study also includes a rare case of bilateral first rib foramen. At the same time, this study includes a rare case of rib spurs extending from the left 11th rib to the 11th intercostal space. CONCLUSIONS: This study demonstrates detailed information about congenital rib anomalies in the Turkish population, which may vary between people. Knowing these anomalies is essential for anatomy, radiology, anthropology, and forensic sciences.


Assuntos
Anormalidades Musculoesqueléticas , Parede Torácica , Humanos , Masculino , Feminino , Costelas/diagnóstico por imagem , Costelas/anormalidades , Anormalidades Musculoesqueléticas/diagnóstico por imagem , Tomografia Computadorizada Multidetectores/efeitos adversos , Radiografia
5.
Sci Rep ; 12(1): 4278, 2022 03 11.
Artigo em Inglês | MEDLINE | ID: mdl-35277536

RESUMO

The aim of this study is to test whether sex prediction can be made by using machine learning algorithms (ML) with parameters taken from computerized tomography (CT) images of cranium and mandible skeleton which are known to be dimorphic. CT images of the cranium skeletons of 150 men and 150 women were included in the study. 25 parameters determined were tested with different ML algorithms. Accuracy (Acc), Specificity (Spe), Sensitivity (Sen), F1 score (F1), Matthews correlation coefficient (Mcc) values were included as performance criteria and Minitab 17 package program was used in descriptive statistical analyses. p ≤ 0.05 value was considered as statistically significant. In ML algorithms, the highest prediction was found with 0.90 Acc, 0.80 Mcc, 0.90 Spe, 0.90 Sen, 0.90 F1 values as a result of LR algorithms. As a result of confusion matrix, it was found that 27 of 30 males and 27 of 30 females were predicted correctly. Acc ratios of other MLs were found to be between 0.81 and 0.88. It has been concluded that the LR algorithm to be applied to the parameters obtained from CT images of the cranium skeleton will predict sex with high accuracy.


Assuntos
Algoritmos , Aprendizado de Máquina , Feminino , Humanos , Masculino , Crânio/diagnóstico por imagem , Tomografia Computadorizada por Raios X
6.
Anat Cell Biol ; 55(1): 40-47, 2022 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-35000931

RESUMO

Considering its hematological and immunological functions, spleen is a very important organ. A change occurs in its size as the spleen performs these functions. This study aims to examine the possible relationships between spleen volume and the basic hemogram and biochemical parameters in serum. Multidetector computed tomography images and basic hemogram and biochemical parameters of 74 adult individuals, 34 male and 40 female, who were found to be healthy, were used in the study. Spleen volume was estimated using the Cavalieri method on multidetector computed tomography images and the correlations between the volume value with basic hemogram and biochemistry parameters were researched. While negative significant correlations were found between the estimated spleen volume and lymphocyte percentage (r=-0.224) and platelet level (r=-0.271); positive significant correlations were found between hemoglobin level (r=0.228), hematocrit level (r=0.237), alanine aminotransferase (r=0.345), and erythrocyte level (r=0.375). As a result of this study, a relationship was found between spleen volume and lymphocyte percentage, hematocrit level, erythrocyte level, platelet level, and alanine aminotransferase level in serum. We believe that the results of the study will provide a larger perspective to clinicians in the diagnosis of diseases associated with spleen.

7.
Drug Chem Toxicol ; 45(5): 2024-2030, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-33682561

RESUMO

The aim of the present study was to investigate the therapeutic and protective effects of linalool against doxorubicin (DOX)-induced kidney injury. Forty-eight Wistar rats were divided into 8 groups as follows; Control, DOX [20 mg/kg, intraperitoneal (ip) single dose DOX], linalool (LIN50 and LIN100; 50 mg/kg and 100 mg/kg linalool via ip for 5 days, respectively), DOX + LIN50 and DOX + LIN100 (20 mg/kg single dose of DOX via ip on first day and 50 mg/kg and 100 mg/kg linalool via ip, respectively), LIN50 + DOX and LIN100 + DOX (50 mg/kg and 100 mg/kg linalool via ip for 5 days, respectively and 20 mg/kg single dose of DOX via ip on fifth day). Doxorubicin led to a significant increase in the level of malondialdehyde (MDA) in the kidney, whereas superoxide dismutase (SOD), catalase (CAT) and reduced glutathione (GSH) levels decreased remarkably when compared with control. On the other hand, LIN supplementation before and after DOX treatment led to a significant decrease in MDA and also increases in SOD, CAT and GSH levels. DOX caused significant increases in the levels of blood urea nitrogen (BUN) and creatinine (Cr) levels in the plasma, while LIN supplementation as a therapeutic and preventive agent led to significant decreases in BUN and Cr levels. The current study demonstrated that LIN supplementation after or before DOX treatment can led to therapeutic and preventive effects against DOX-induced renal damage.


Assuntos
Doxorrubicina , Estresse Oxidativo , Monoterpenos Acíclicos , Animais , Antioxidantes/farmacologia , Doxorrubicina/toxicidade , Rim , Malondialdeído , Ratos , Ratos Wistar , Superóxido Dismutase/metabolismo
8.
Sci Rep ; 10(1): 8147, 2020 05 18.
Artigo em Inglês | MEDLINE | ID: mdl-32424241

RESUMO

Determining the branching pattern of the popliteal artery (PA) is an important step in planning some radiological and surgical procedures. The aim of this study was to investigate the course and morphology of the terminal branches of the popliteal artery using multidetector computed tomography (MDCT) angiography, and also to determine possible role gender in branching pattern. Three-hundred forty lower extremity MDCT angiography images for 170 patients (118 M, 52 F), who were between 20-80 years old, were examined. Popliteal artery branching types were grouped as percentage incidences. TPT diameters and lengths in Type IA extremities were compared based on gender and right or left side. Anterior tibial artery (ATA), posterior tibial artery (PTA) and peroneal artery dominance rates were calculated. 5000 times measurement data was mixed so that the cascade mean filter values were calculated for the right and left TPT length each time. It was observed that Type IA was the most common branching pattern (89.4%). The variational pattern incidence was 10.6% and the most common category was Type III (4.1%). The most common pattern was Type IB (3.2%). Variational pattern was 2 times more prevalent in females when compared to the males. The mean TPT diameter was 4.5 mm (2.7-7.3 mm) and there was no difference based on gender and the right-left side. The most common dominant artery for the right and left legs was PTA in both genders. The cut-off values calculated for the right and left TPT independent of gender were 31.30 ± 2.40 and 28.36 ± 2.58, respectively. Three new subtypes were identified as short (S ≤ 2 cm), standard (N = 2-4 cm) and long (L ≥ 4 cm) in Type IA, since it is in a wide variational range although it is a typical PA branching pattern.


Assuntos
Artéria Poplítea/química , Adulto , Idoso , Idoso de 80 Anos ou mais , Angiografia por Tomografia Computadorizada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Tomografia Computadorizada Multidetectores , Artéria Poplítea/anatomia & histologia , Artéria Poplítea/diagnóstico por imagem , Adulto Jovem
9.
Comput Biol Med ; 115: 103490, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31606585

RESUMO

BACKGROUND: Predicting sex is an important problem in forensic medicine. The femur, patella, mandible and calcaneus bones are frequently used in predicting sex. In our study, we aimed to use the artificial neural network (ANN) technique to predict sex by measuring the values of the phalanges of the first and fifth toes and the first and fifth metatarsal bones. METHOD: All bone measurements were conducted on the direct X-ray images of 176 males and 178 females in the age range of 24-60 years. The multilayer perceptron classifier (MLPC) input layer included parameters on the bone length measurements of phalanx proximalis I, phalanx distalis I, metatarsal I, phalanx proximalis V, phalanx medialis V, phalanx distalis V and metatarsal V. The output layer contained two neurons to define the male and female sexes. The present study used an MLPC model that had two hidden layers, and the first and second hidden layers contained 14 and 7 nodes, respectively. RESULTS: The model had an overall accuracy (Acc) of 0.95, specificity (Spe) of 0.97, sensitivity (Sen) of 0.95 and Matthews correlation coefficient (Mcc) of 0.92. While the sex prediction success of our proposed model was higher in women, the results were more specific in men and more sensitive in women (AccMale = 0.93, AccFemale = 0.98, SenMale = 0.93, SpeMale = 0.98, SenFemale = 0.98 and SpeFemale = 0.93). CONCLUSIONS: This study demonstrated that the ANN model for length measurements on small bones is a highly effective instrument for sex prediction.


Assuntos
Bases de Dados Factuais , Ossos do Metatarso/diagnóstico por imagem , Redes Neurais de Computação , Determinação do Sexo pelo Esqueleto , Falanges dos Dedos do Pé/diagnóstico por imagem , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Radiografia
10.
Forensic Sci Int ; 301: 6-11, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31128410

RESUMO

In addition to the pelvis, cranium and phalanges, the sternum is also used for postmortem sex identification. Bone measurements may be obtained on cadaveric bones. Alternatively, computerized tomography may be used to obtain measurements close to the original ones. Moreover, usage of artificial neural networks (ANNs) in the field of medicine has started to provide new horizons. In this study, we aimed to identify sex by an ANN using lengths of manubrium sterni (MSL), corpus sterni (CSL) and processus xiphoideus (XPL) and sternal angle (SA) from computerized tomography (CT) images brought to an orthogonal plane. This study used the thin-slice thoracic CT images of 422 cases (213 female, 209 male) with an age range of 27-60 years brought to the orthogonal plane. Measurements of MSL, CSL, XPL and SA were analyzed with a multilayer artificial neural network that used stochastic gradient descent (SGD) for optimization and two hidden layers. MSL, CSL and XPL were longer, and SA was wider in men (MSL p = 0.000, CSL p = 0.000, XPL p = 0.000, SA p = 0.02). In the case of the two hidden layers of the network with 20 and 14 neurons in the hidden layers, respectively, learning rate of 0.1 and momentum coefficient of 0.9, the accuracy (Acc) of sex prediction was 0.906. In order to define a more realistic performance of the network, bootstrap was run with the confidence interval of 94%. A sensitivity (Sen) value of 0.91 and a specificity (Spe) value of 0.90 were calculated. The success rates that were achieved in sex identification with measurements on the skeleton using ANN were observed to be higher than those achieved by linear models. Also, sometimes all parts of the bones may not be found or might be deformed. In this case, the number of parameters used for the estimation will be incomplete. The ANN has the strong advantage to be able to estimate despite the missing parameter.


Assuntos
Redes Neurais de Computação , Determinação do Sexo pelo Esqueleto/métodos , Esterno/anatomia & histologia , Esterno/diagnóstico por imagem , Adulto , Feminino , Antropologia Forense/métodos , Humanos , Masculino , Pessoa de Meia-Idade , Tomografia Computadorizada por Raios X
11.
Surg Radiol Anat ; 40(7): 841-846, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29602963

RESUMO

OBJECTIVE: Concha bullosa is generally regarded as pneumatisation of the middle turbinate in the nose. However, pneumatisation may also be seen in the superior and inferior turbinate. Computed tomography (CT) of paranasal sinuses is extremely helpful for the examination of this inaccessible area. Coronal CT sections of paranasal sinuses are particularly useful for surgical anatomy, as these images show nearly the same regions as the endoscopic examinations. The aim of this retrospective study was to evaluate the presence, incidence and unilaterality-bilaterality of superior turbinate pneumatisation and concomitant nasal pathologies. METHODS: A total of 1000 patients who underwent CT of the paranasal sinuses because of headaches, nasal obstructions, anosmia, facial pain or facial trauma were evaluated retrospectively. RESULTS: Among the 1000 patients, superior pneumatized turbinate was seen on CT images of the paranasal sinuses in 149 (14.9%) cases. Of these patients, 84 were female, 65 were male, and the mean age was 38.14 years. Among 149 patients, 58 patients had bilateral superior pneumatized turbinate and the remaining 91 patients had unilateral superior pneumatized turbinate. 60.4% of the patients with superior pneumatized turbinate also had middle pneumatized turbinate. CONCLUSION: The superior pneumatized turbinate is an anatomical variation with an incidence ranging from 12.2 to 50%. The present study revealed that there is no relationship between volume size of the superior pneumatized turbinates and sinusitis, nasal septum deviation and paradoxical middle concha. It is very important to define anatomical variations in the preoperative CT evaluation of the paranasal sinuses.


Assuntos
Seios Paranasais/anatomia & histologia , Seios Paranasais/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Conchas Nasais/anatomia & histologia , Conchas Nasais/diagnóstico por imagem , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Doenças dos Seios Paranasais/diagnóstico por imagem , Interpretação de Imagem Radiográfica Assistida por Computador , Estudos Retrospectivos
12.
Korean J Radiol ; 19(1): 72-78, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29354002

RESUMO

Objective: Multiple sclerosis (MS) is an inflammatory disease characterized by demyelinating plaques in the white matter. Chronic cerebrospinal venous insufficiency (CCSVI) has been proposed as a new hypothesis for the etiopathogenesis of MS disease. MS-CCSVI includes a significant decrease of cerebrospinal fluid (CSF) flow through the cerebral aqueduct secondary to an impaired venous outflow from the central nervous system. This study aimed to determine whether CSF flow dynamics are affected in MS patients and the contributions to differential diagnosis in active and chronic disease using phase-contrast magnetic resonance imaging (PC-MRI). Materials and Methods: We studied 16 MS patients with chronic plaques (group 1), 16 MS patients with active plaques-enhanced on MRI (group 2), and 16 healthy controls (group 3). Quantitatively evaluation of the CSF flow was performed from the level of the cerebral aqueduct by PC-MRI. According to heart rates, 14-30 images were obtained in a cardiac cycle. Cardiac triggering was performed prospectively using finger plethysmography. Results: No statistically significant difference was found between the groups regarding average velocity, net forward volume and the average flow (p > 0.05). Compared with the controls, group 1 and group 2, showed a higher peak velocity (5.5 ± 1.4, 4.9 ± 1.0, and 4.3 ± 1.3 cm/sec, respectively; p = 0.040), aqueductal area (5.0 ± 1.3, 4.1 ± 1.5, and 3.1 ± 1.2 mm2, respectively; p = 0.002), forward volume (0.039 ± 0.016, 0.031 ± 0.013, and 0.021 ± 0.010 mL, respectively; p = 0.002) and reverse volume (0.027 ± 0.016, 0.018 ± 0.009, and 0.012 ± 0.006 mL, respectively; p = 0.000). There were no statistical significance between the MS patients with chronic plaques and active plaques except for reverse volume. The MS patients with chronic plaques showed a significantly higher reverse volume (p = 0.000). Conclusion: This study indicated that CSF flow is affected in MS patients, contrary to the hypothesis that CCSVI-induced CSF flow decreases in MS patients. These findings may be explained by atrophy-dependent ventricular dilatation, which may occur at every stage of MS.


Assuntos
Líquido Cefalorraquidiano/fisiologia , Imagem Cinética por Ressonância Magnética , Esclerose Múltipla/diagnóstico , Adolescente , Adulto , Estudos de Casos e Controles , Doença Crônica , Meios de Contraste/química , Diagnóstico Diferencial , Feminino , Humanos , Hidrodinâmica , Masculino , Pessoa de Meia-Idade , Esclerose Múltipla/líquido cefalorraquidiano , Esclerose Múltipla/fisiopatologia , Adulto Jovem
13.
Surg Radiol Anat ; 39(12): 1397-1400, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28585065

RESUMO

Variations in the origin of the vertebral artery (VA) is a congenital anomaly that occurs during embryological development. Multiple variations related to VA origin have been reported in the literature. Abnormal VA origin is usually determined as incidental findings during angiographic or postmortem anatomical studies. Although most of the cases are asymptomatic, in patients with VA anomaly symptoms such as dizziness have been described. The anomalous variation in the origin of the right VA is rare and separated into three categories: (1) originating from the aorta, (2) originating from the carotid arteries, (3) duplicated origin. In this case, we aimed to present the right VA originating from the right occipital artery and concomitant anomalies of the transverse foramen that have not been reported previously according to our knowledge in literature. In a 32-year-old female patient referred to our hospital because of dizziness, the right VA was not observed on magnetic resonance imaging and computed tomography angiography (CTA) examination was performed. CTA showed hypoplasia of the right transverse foramen at the levels of the C1, C5 and C6 vertebrae and aplasia of the right transverse foramen at the levels of the C2, C3 and C4 vertebrae. The right VA originating from the right occipital artery continues to its normal course by entering the cranium through the foramen magnum at the level of the atlantooccipital junction.


Assuntos
Vértebras Cervicais/irrigação sanguínea , Artéria Vertebral/anormalidades , Adulto , Variação Anatômica , Circulação Cerebrovascular , Vértebras Cervicais/diagnóstico por imagem , Angiografia por Tomografia Computadorizada , Diagnóstico Diferencial , Tontura , Feminino , Cefaleia , Humanos , Imageamento por Ressonância Magnética , Artéria Subclávia/anormalidades , Artéria Subclávia/diagnóstico por imagem , Artéria Vertebral/diagnóstico por imagem
14.
Anat Rec (Hoboken) ; 300(3): 549-555, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-27863121

RESUMO

The aim of this study was cerebrospinal fluid (CSF) flow quantification in the cerebral aqueduct using phase-contrast cine magnetic resonance imaging (PCC-MRI) according to both sexes and three different age groups to obtain normative data. Seventy two volunteers with no cerebral pathology were included in this study. Subjects were divided into three age groups: 20-34 years, 35-49 years, and 50-65 years including equal gender groups. CSF flow's quantitatively evaluation was performed with images that were obtained by 1.5 T Magnetic Resonance (MR) unit from cerebral aqueduct level on the semi-axial plan. Between groups, peak velocity (cm sec-1 ), average velocity (cm/s), forward volume (mL), reverse volume (mL), net forward volume (mL), and average flow over range (ml/min) values of current flowing through aqueduct and average aqueductal areas were compared. There were no statistically significant differences in CSF flow parameters among different age groups and between sexes (P > 0.05). There was a statistically significant difference in average cerebral aqueduct area between the age group of 50-65 years and the other age groups (P = 0.002). The average aqueductal area was higher in the age group of 50-65 years. Normal aqueductal CSF flow parameters evaluated with PCC-MRI don't show a significant difference by age and sex. We have achieved the lower and upper values of these parameters would be useful in future clinical studies. The size of aqueductal area may also be explained by atrophy-dependent ventricular system dilatation in the elderly. Anat Rec, 300:549-555, 2017. © 2016 Wiley Periodicals, Inc.


Assuntos
Aqueduto do Mesencéfalo/diagnóstico por imagem , Líquido Cefalorraquidiano/diagnóstico por imagem , Adulto , Fatores Etários , Idoso , Feminino , Humanos , Imagem Cinética por Ressonância Magnética/métodos , Masculino , Pessoa de Meia-Idade , Fatores Sexuais , Adulto Jovem
15.
Gen Physiol Biophys ; 35(1): 87-94, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26001290

RESUMO

Physical exercise could cause muscle and tissue damage due to increase in the formation of free oxygen radicals during exercise. The aim of the present study was to investigate the effect of crocin on parameters associated with oxidative stress in recovery from acute swimming exercise in rats. Rats were divided into eight groups; Normal Control (NC: untreated and did not swim), Crocin Control (CC: received crocin and did not swim), Exercise-1 (Exe-1: untreated and swam), Exercise-24 (Exe-24: untreated and swam), Exercise-48 (Exe-48: untreated and swam), Exercise+Crocin-1 (Exe-Cro-1: received crocin and swam), Exercise+Crocin-24 (Exe-Cro-24: received crocin and swam), Exercise+Crocin-48 (Exe-Cro-48: received crocin and swam). AST, ALP, LDH, CK, XO enzymes levels increased after swimming in untreated and crocin-treated groups, but there was a less increase in crocin-treated groups. The highest MDA levels in serum were determined in Exe-1 compared with all other groups. There was significant difference between control and exercise groups in MDA level (p = 0.033). In contrast, there was significant difference between control and exercise groups in GSH level (p < 0.001). In addition, crocin given to swimming rats significantly increased GSH levels (p < 0.05) and decreased MDA levels when compared with untreated exercise groups. In conclusion, crocin is able to protect liver and skeletal muscle tissue against exercise-induced oxidative damage by preventing reactive oxygen species (ROS) production.


Assuntos
Carotenoides/farmacologia , Estresse Oxidativo/fisiologia , Esforço Físico/fisiologia , Espécies Reativas de Oxigênio/sangue , Recuperação de Função Fisiológica/fisiologia , Natação/fisiologia , Animais , Antioxidantes/farmacologia , Feminino , Estresse Oxidativo/efeitos dos fármacos , Condicionamento Físico Animal/métodos , Ratos , Ratos Wistar , Recuperação de Função Fisiológica/efeitos dos fármacos , Resultado do Tratamento
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