Taxonomic significance of ISTR to discriminate species in agavaceae

Abstract

Objective: To compare and quantify the retinal vascular changes induced by non-intentional pressure contact by digital handheld camera during retinopathy of prematurity (ROP) imaging by means of a computer-based image analysis system, Retinal Image multiScale Analysis. Methods: A set of 10 wide-angle retinal pairs of photographs per patient, who underwent routine ROP examinations, was measured. Vascular trees were matched between 'compression artifact' (absence of the vascular column at the optic nerve) and 'not compression artifact' conditions. Parameters were analyzed using a two-level linear model for each individual parameter for arterioles and venules separately: integrated curvature (IC), diameter (d), and tortuosity index (TI). Results: Images affected with compression artifact showed significant vascular d (P<0.01) changes in both arteries and veins, as well as in artery IC (P<0.05). Vascular TI remained unchanged in both groups. Conclusions: Non-adverted corneal pressure with the RetCam lens could compress and decrease intra-arterial diameter or even collapse retinal vessels. Careful attention to technique is essential to avoid absence of the arterial blood column at the optic nerve head that is indicative of increased pressure during imaging. " 2011 Macmillan Publishers Limited All rights reserved.",,,,,,"10.1038/eye.2011.170",,,"http://hdl.handle.net/20.500.12104/44990","http://www.scopus.com/inward/record.url?eid=2-s2.0-80054071762&partnerID=40&md5=b33aa756bea29f275349753648f860c0

http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&D=medl&AN=21760627",,,,,,"10",,"Eye",,"1337

1340",,"25",,"Scopus

WOS

MEDLINE",,,,"Index Medicus;Clinical Competence/sn [Statistics & Numerical Data];Clinical Competence;Diagnosis, Computer-Assisted/ae [Adverse Effects];Female;Humans;Image Processing, Computer-Assisted;Infant;Infant, Newborn;Infant, Premature;Male;Optic Disk/pa [Pathology];Optic Disk/pp [Physiopathology];Photography;Retinal Artery/pa [Pathology];Retinal Artery/pp [Physiopathology];Retinopathy of Prematurity/di [Diagnosis];Retinopathy of Prematurity/pa [Pathology];Retinopathy of Prematurity/pp [Physiopathology];Telemedicine",,"retinopathy of prematurity; ROP; telemedicine",,,,,,"Temporary morphological changes in plus disease induced during contact digital imaging",,"Article" "46740","123456789/35008",,"Torres-Morán, M.I., Centro Universitario de Ciencias Biológicas Y Agropecuarias, Universidad de Guadalajara, Km 15.5 Carretera a Nogales, Zapopan, Jalisco, Mexico; Almaraz-Abarca, N., Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Unidad Durango, Becarios (COFAA); Velasco-Ramírez, A.P., Centro Universitario de Ciencias Biológicas Y Agropecuarias, Universidad de Guadalajara, Km 15.5 Carretera a Nogales, Zapopan, Jalisco, Mexico; Hernández-Vargas, V., Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Unidad Durango, Becarios (COFAA); Orea-Lara, G., Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Unidad Durango, Becarios (COFAA); De León, A.C.-D., Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Unidad Durango, Becarios (COFAA); Oliver-Salvador, C., UPIBI-Instituto Politécnico Nacional",,"Torres-Moran, M.I.

Almaraz-Abarca, N.

Velasco-Ramirez, A.P.

Hernandez-Vargas, V.

Orea-Lara, G.

De Leon, A.C.-D.

Oliver-Salvador, C.",,"2008",,"Family Agavaceae is endemic of American Continent. From the around 300 species recognized in this family, 217 occur in Mexico. Relevant ethnobotanic relationships among Agavaceae and the several native human cultures of the American Continent have been established since prehispanic times. Agave is one of the most important genus in that family due to its great diversity and abundance, mainly in arid and semiarid regions of Mexico. In this country, near to 15 species of Agave are used to elaborate alcoholic beverages. Agave tequilana weber var. azul is indubitable the most important of them because is the raw material to elaborate a particular worldly famous class of mescal, named tequila. Agave salmiana, A. maximiliana and A. durangensis are species less famous than A. tequilana, but they also have a high quality and level of carbohydrates and in fact, support local mescal industries. In these last species several taxonomic controversies exist concerning their specific delimitation. In this study the molecular characterization of eight species of Agavaceae using ISTR was performed in order to determine the significance of these markers for discriminating among specific taxa. The results suggest that these molecular markers are worthy to typify species of Agavaceae and detect intrapopulation variability. " 2008 Science Publications.