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A Singular Method to Compare Dental Radiographic Films Used to Study Maxillofacial Structures International Journal of Morphology
Watanabe,Plauto Christopher Aranha; Issa,Joao Paulo Mardegan; Pardini,Luiz Carlos; Monteiro,Solange Aparecida Caldeira; Catirse,Alma Blásida Concepción Elizaur Benitez.
The aim of this article is to present a singular and practical method to compare roentgenograms, concerning optical density and contrast. This method is specifically indicated for research related to stepwedge penetrometer and photodensitometer
Tipo: Journal article Palavras-chave: Dental radiographic films; Radiographic density; Radiographic contrast.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000300017
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A snapshot of cancer in Chile: analytical frameworks for developing a cancer policy Biol. Res.
la Jara,Jorge Jimenez de; Bastias,Gabriel; Ferreccio,Catterina; Moscoso,Cristian; Sagues,Sofia; Cid,Camilo; Bronstein,Eduardo; Herrera,Cristian; Nervi,Bruno; Corvalan,Alejandro; Velasquez,Ethel V; Gonzalez,Pamela; Castellon,Enrique; Bustamante,Eva; Oñate,Sergio; McNerney,Eileen; Sullivan,Richard; Owen,Gareth I.
INTRODUCTION: The South American country Chile now boasts a life expectancy of over 80 years. As a consequence, Chile now faces the increasing social and economic burden of cancer and must implement political policy to deliver equitable cancer care. Hindering the development of a national cancer policy is the lack of comprehensive analysis of cancer infrastructure and economic impact. OBJECTIVES: Evaluate existing cancer policy, the extent of national investigation and the socio-economic impact of cancer to deliver guidelines for the framing of an equitable national cancer policy. METHODS: Burden, research and care-policy systems were assessed by triangulating objective system metrics -epidemiological, economic, etc. - with political and policy analysis....
Tipo: Journal article Palavras-chave: Chile; Cancer policy; Investigation; Research and development; Statistics; Gallbladder cancer; Stomach cancer; Developing country.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100010
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A special issue devoted to STEM CELLS Biol. Res.
Santos,Manuel J; Ojeda,Patricio.
Tipo: Journal article
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602012000300001
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A spleen tyrosine kinase inhibitor attenuates the proliferation and migration of vascular smooth muscle cells Biol. Res.
Seo,Hyang‑Hee; Kim,Sang Woo; Lee,Chang Youn; Lim,Kyu Hee; Lee,Jiyun; Choi,Eunhyun; Lim,Soyeon; Lee,Seahyoung; Hwang,Ki‑Chul.
Abstract Background Pathologic vascular smooth muscle cell (VSMC) proliferation and migration after vascular injury promotes the development of occlusive vascular disease. Therefore, an effective chemical agent to suppress aberrant proliferation and migration of VSMCs can be a potential therapeutic modality for occlusive vascular disease such as atherosclerosis and restenosis. To find an anti-proliferative chemical agent for VSMCs, we screened an in-house small molecule library, and the selected small molecule was further validated for its anti-proliferative effect on VSMCs using multiple approaches, such as cell proliferation assays, wound healing assays, transwell migration assays, and ex vivo aortic ring assay. Results Among 43 initially screened...
Tipo: Journal article Palavras-chave: Syk kinase inhibitor; BAY61-3606 VSMC; Proliferation; Migration.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602017000100403
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A standardized protocol for genomic DNA isolation from Terminalia arjuna for genetic diversity analysis Electron. J. Biotechnol.
Sarwat,Maryam; Singh Negi,Madan; Lakshmikumaran,Malathi; Kumar Tyagi,Akhilesh; Das,Sandip; Shankar Srivastava,Prem.
For studying genetic diversity in natural populations of Terminalia, a medicinal plant, our attempts to isolate high quality DNA using several previously reported protocols and even modifications were unsuccessful. We therefore combined CTAB based isolation, and column based purification step, to isolate DNA from Terminalia arjuna. The DNA isolated using this standardized protocol was high in quality and suitable for restriction digestion and generation of random amplification of polymorphic DNA (RAPD) and amplified fragment length polymorphism (AFLP).
Tipo: Journal article Palavras-chave: DNA extraction; Medicinal plants; Molecular markers; Terminalia species.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000100011
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A statistical approach for assessing the heterogeneity of Hass avocados subjected to different postharvest abiotic stresses Ciencia e Investigación Agraria
Fuentealba,Claudia; Pedreschi,Romina; Hernández,Ignacia; Saavedra,Jorge.
C. Fuentealba, R. Pedreschi, I. Hernández, and J. Saavedra. 2016. A statistical approach for assessing the heterogeneity of Hass avocados subjected to different postharvest abiotic stresses. Cien. Inv. Agr. 43(3):356-365. Hass avocado (Persea americana Mill.) is marketed worldwide. Due to its complex physiology, a wide variability in postharvest ripening can be observed, i.e., heterogeneity in the number of days to reach edible ripeness. There is a need for a simple and objective method for evaluating the efficacy of postharvest treatments in the reduction of this postharvest ripening heterogeneity given the high demand of import countries for consistent quality and product homogeneity. Therefore, the aim of this study was to compare the appropriateness of...
Tipo: Journal article Palavras-chave: Avocados; Heterogeneity; Multiple comparison; Ripening; Standard deviation.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202016000300002
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A Statistical Study of the Association of Seven Dental Anomalies in the Brazilian Population International Journal of Morphology
Miziara,R. C; Mendes-Junior,C. T; Wiezel,C. E. V; Simões,A. L; Scuoteguazza,J. A. C; Azoubel,R.
The objective of this study was to show the association patterns among seven types of dental anomalies (second pre-molar agenesis, upper side incisive reduced in size, lower first molar infra-ochlesis, enamel hypoplasia, first molar ectopic eruption, supra numerous teeth and upper canine ectopic eruption) in a population sample without dental treatment ranging in age from 7 to 14. A total of 172 patients were attended and underwent the clinical examination at the Clínica Infantil da Fundação Educacional de Barretas. Eleven patients from this total were selected according to a first dental anomaly diagnosis and submitted to panoramic radiography. A significant association (p<0.05) was detected among six pairs of anomalies (second pre-molar agenesis x...
Tipo: Journal article Palavras-chave: Dental anomalies; Genetics etiology; Brazilian Population.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000200025
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A strategy to identify genomic expression at single-cell level or a small number of cells Electron. J. Biotechnol.
Li,Biaoru.
Recent advances in functional genomics allow us to estimate the expression of several thousands of genes in the mammalian genome. Techniques such as microarrays, expressed tag sequencing (EST), serial analysis of gene expression (SAGE), subtractive cloning and differential display (DD), and two-dimensional electrophoresis gel have been extensively used to screen and analyze parallel gene expression. Some pathological processes, for example, tumorigenesis and solid tumour growth, in which the former is derived from a single-cell and the latter has a mixed-cell problem, present new challenges to the limit of these functional genomic techniques. To fully understand the functions of cells in tumorigenesis or in heterogeneous solid tumour masses, it is...
Tipo: Journal article Palavras-chave: Genome; Genomic expression; Genomic expression analysis at single cell; Single cell.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000100011
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A Study of Anatomical Variations of Median Nerve Formation and Its Relation to the Arteries in the Axilla and Arm International Journal of Morphology
Samarawickrama,M. B.
Variations of the peripheral nerve formation, communication and distribution are clinically important because such knowledge can be used for proper planning of surgeries and evaluating effects of nerve injuries and clinical imaging. Median nerve is known to have several such variations. However studies done on median nerve in Sri Lankan subjects are spars. The objective of this study was to find out anatomical variations of the median nerve with regards to its variations in roots and relations to the arteries in the axilla and arm. The study was done using 98 upper limbs of 49 formalin fixed cadavers. They were dissected and anatomy of the median nerve formations was studied focusing its variations of the roots and relation to the arteries. Anatomical...
Tipo: Journal article Palavras-chave: Median nerve; Roots variations; Abnormal relations; Morphology.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000200050
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A Study of Dairy Farm Technical Efficiency Using Meta-Regression: An International Perspective Chilean J. Agric. Res.
This paper develops a meta-regression analysis to explain the variation of mean technical efficiency (PETP) measurements from a total of 65 frontier studies that report technical efficiency (ET) measurements at the dairy farm level in the literature published in English and Spanish. The analysis includes the effect of methodology on ET measurements, as well as the effect of the econometric procedure on the meta-regression estimates. Eight models were estimated, and two of these were selected: a fixed effects specification with dummy variables for the most significant studies without geographical effects (EFS), and a specification where the multiple observations are averaged and geographical effects included (OP). Based on model performance, the EFS option...
Tipo: Journal article Palavras-chave: Meta-regression; Frontier models; Technical efficiency; Dairy farms.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200011
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A Study of the Anatomical Variations in the Position of the Greater Palatine Foramen in Adult Human Skulls and its Clinical Significance International Journal of Morphology
Dave,Mitesh R; Yagain,Vaishali Kiran; Anadkat,Samir.
Pain is a common distressing symptom in dental practice. Depending upon the cases, different techniques are used to relieve pain. One of these is peripheral trigeminal nerve block. Peripheral trigeminal nerve block anaesthesia has proved to be an effective and convenient way to anaesthetise large regions of oral and maxillofacial complex. This block can be intraoral or extra oral. The intraoral route is through the greater palatine foramen in which the dental surgeons enter into the pterygopalatine fossa, where the maxillary nerve is situated. The morphological variations in the position of greater palatine foramen may be of clinical importance in the administration of local anaesthesia and in palatal surgery. In the present study, the distance of greater...
Tipo: Journal article Palavras-chave: Greater palatine foramen; Peripheral trigeminal nerve block; Pterygopalatine fossa; Maxillary molars.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200036
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A study of the river basins and limnology of five humic lakes on Chiloé Island RChHN
VILLALOBOS,L.; PARRA,O..
From November 1996 to October 1997, the river basins of five humic lakes on Chiloé Island were studied monthly: Lakes Natri, Tepuhueico, Tarahuín, Huillinco and Cucao. The objective of this study was to know the catchment area, river basin and the main physical, chemical and biological characteristics of these humic lakes. The trophic status, the actual loading, and the mass balances of phosphorus and nitrogen were determined in relation to anthropogenic activities. Lakes Cucao and Huillinco were characterized by a marine influence. All the lakes had brown coloured waters, caused by humic substances, which limit their transparency. Lake Natri was the deepest (58 m), whereas Lake Tepuhueico had the shallowest depth (25 m). Total phosphorus and nitrogen...
Tipo: Journal article Palavras-chave: Cuenca hidrográfica; Caracterización limnológica; Lagos húmicos; Chiloé; Sur de Chile.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000400003
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A Study of the Staining Effect of Roselle (Hibiscus sabdariffa) on the Histologic Section of the Testis International Journal of Morphology
Egbujo,E. C.; Adisa,O. J; Yahaya,A. B.
This study describes the preparation and use of Roselle (Hibiscus sábddariffa) for the differential staining of testicular tissue sections to find out its staining effect on nuclear, cytoplasmic and other structures. Various treatments using modifications of the plant extract in water were carried out on sections of the rabbit testis. Various levéis of differentiation of nuclear and cytoplasmic structures as well as other structures of this organ was obtained especially when 1% eosin was applied as a counter stain. The best staining result was obtained when iron alum was used to mordant the extract and when the extract, mordanted with potassium alum was acidified using acetic acid and used to stain the sections. Modification of the aqueous extract to an...
Tipo: Journal article Palavras-chave: Hibiscus sabdariffa; Staining; Testis; Histologic section.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022008000400022
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A study on &#946;-defensin-2 and histatin-5 as a diagnostic marker of early childhood caries progression Biol. Res.
Jurczak,Anna; Ko&#347;cielniak,Dorota; Papie&#380;,Monika; Vyhouskaya,Palina; Krzy&#347;ciak,Wirginia.
BACKGROUND: Recently, a continuous growth of interest has been observed in antimicrobial peptides (AMPs) in the light of an alarming increase in resistance of bacteria and fungi against antibiotics. AMPs are used as biomarkers in diagnosis and monitoring of oral cavity pathologies. Therefore, the determination of specific protein profiles in children diagnosed with early childhood caries (ECC) might be a basis for effective screening tests and specialized examinations which may enable progression of disease METHODS: The objective of the studies was to determine the role of histatin-5 and &#946;-defensing-2 as a diagnostic marker of early childhood caries progression. In this work, results of concentration determination of two salivary proteins...
Tipo: Journal article Palavras-chave: &#946; -defensin-2 Histatin-5 Early childhood caries.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100061
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A STUDY ON SEDIMENTARY ENVINONMENTS BY REMOTELY SENSED DATA IN THE SOUTHERN TIDAL OF KANGHWA ISLAND, KOREA Gayana
Yoo,Hong-Rhyong; Ryu,Joo-Hyung; Bae,Il-Hwan; Ahn,Yu- Hwan.
The southern tidal flat of Kanghwa Island with an area of approximately 90 km² is one of the biggest flats on the western coast of Korea. Remote sensing has been identified as potential tool to provide synoptic information of the intertidal environments. To estimate quantitatively the morphological changes in a tidal flat, it is necessary to measure both the amount of sedimentation or erosion and the sediment facies involved. Thus, the objectives of this study are : (i) to generate an intertidal digital elevation model (DEM) using the waterline method around 1989; (ii) to quantitatively estimate the morphological changes from the generated DEM for the years 1989 and the extracted waterlines for the year 2002; (iii) to discriminate the surface sedimentary...
Tipo: Journal article
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000300049
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A Study on the Anomalies of Liver in the South Indian Cadavers International Journal of Morphology
Nayak B,Satheesha.
Liver is the largest gland in the body and rarely shows variations in its lobes and fissures. We studied 55 Formalin-fixed livers for occurrence of abnormal shape, lobes, fissures and position of gall bladder. In 60% of cases the liver was normal. 40% livers showed one or the other variations. Additional lobes were found in 9.09% of cases. Additional fissure was found in 1.81% of cases. Presence of dumbbell shaped caudate lobe and presence of large papillary process was noted in 1.81% cases each. In 1.81% cases the fissure for ligamentum teres was absent or situated on the anterior surface of the liver. In 1.81% of cases each the liver was either extremely long or extremely flat. In 18.18% of the cases, the gall bladder was short and its fundus did not...
Tipo: Journal article Palavras-chave: Liver; Gall bladder; Variation; Lobe; Fissure; Abnormal.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200051
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A Study on the Number and Arrangement of the Structures Passing Through the Porta Hepatis in South Indian Population International Journal of Morphology
Sapna,M; Shetty,Surekha D; Nayak B,Satheesha.
The porta hepatis of the liver is a very important area surgically. The knowledge of the variations in the structures passing through the porta hepatis might be of great help in reducing the risks of surgery in this area. In the current study 59 livers from South Indian cadavers were observed for the number and arrangement of the structures passing through the porta hepatis. In all the livers the portal vein was posteriormost and the hepatic duct was the anteriormost structure. The hepatic artery and its branches were in between the duct and the vein. The mean weight of the liver was 1.025 kg. The mean length of porta hepatis was 4.825 cm and the mean breadth was 2.433 cm. The number varied from one to three for the duct and vein but for the artery it was...
Tipo: Journal article Palavras-chave: Liver; Porta hepatis; Bile duct; Portal vein; Hepatic artery.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000100026
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A Study on the Structure and Morphologic Development of Calcaneal Tendon and Triceps Surae Muscle in Human Fetuses during the Fetal Period and the Evaluation of Clinical Importance of Calcaneal Tendon International Journal of Morphology
Kadir,Desdicioglu; Ceren,Uguz; Busra,Sakalli; Esra,Koyuncu; Ali,Malas Mehmet.
It was aimed that the morphometric development of calcaneal tendon and the structures building it up in human fetuses during the fetal period be anatomically studied and that its clinical importance be evaluated. The study comprised a total of 102 fetus legs (51 human fetuses: 26 male and 25 female) whose ages varied between 15-40 gestational week, without external pathology or anomaly. The fetuses were divided in groups according to gestational weeks, trimesters and months. In the wake of the general external measurements of fetuses, leg dissection was performed. Afterwards, the morphometric parameters of gastrocnemius muscle, soleus muscle and calcaneal tendon were measured. The averages and the standard deviations of the measured parameters were...
Tipo: Journal article Palavras-chave: Fetal development; Morphometry; Calcaneal tendon; Anatomy.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000300019
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A Study on the Variations in the Formation of the Trunks of Brachial Plexus International Journal of Morphology
Shetty,Surekha D; Nayak B,Satheesha; Madahv,Venu; Braganza,Cilwyn Shalitha; Somayaji,S. N.
Brachial plexus shows several variations in its formation and branching pattern. Variations in the formation of the trunks are very rare. We studied 44 dissected specimens specifically for variations in the formation of the trunks of the brachial plexus. 5 cadavers (11.3%) showed variations in the formation of the trunks. All the variations were unilateral. In one cadaver (2.27%), the middle trunk was formed by union of C7 and C8 roots and lower trunk was formed by T1 root. Upper and middle trunks were fused with each other in one specimen (2.27%). In 3 specimen (6.81%), the C5 root pierced scalenus anterior before joining C6 to form the upper trunk. Knowledge of its variations is of importance to orthopedic surgeons, neurologists and anesthesiologists.
Tipo: Journal article Palavras-chave: Brachial plexus; Variation; Nerve; Trunks; Roots; Neck.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000200042
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A Study on the Variations of Size, Shape and External Features of the Spleen in South Indian Population International Journal of Morphology
Nayak B,Satheesha; Somayaji,S. N; Soumya,K. V.
The spleen is the largest lymphoid organ. It is wedge shaped and measures about 1 inch thick, 3 inches broad and 5 inches long. It presents characteristic notches on its superior margin and has a hilum on the visceral surface. The aim was to study the anomalies related to size, shape and external features of the spleen and discuss their clinical importance. As there are not many reports on variations in size shape and features of spleen in the South Indian population, we decided to do this study on cadaveric specimens. We observed 50 spleens fixed with 10% formalin. Among the 50 spleens observed, 25 spleens (50%) were normal and had all the features explained in the textbooks. 25 spleens (50%) did not have any notches on the superior margin, 2 spleens (4%)...
Tipo: Journal article Palavras-chave: Spleen; Anomaly; Variation; Splenic notch; Anatomy.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000300001
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