New ocular findings in two sisters with Yunis-Varon syndrome and literature review

Abstract

To determine if an opportunistic macroalga could increase its tissue nitrogen content in response to nutrient pulses forced by the internal tide, independent samples of the green alga Ulva lactuca (Linnaeus), previously cultured in nutrient-poor tanks, were outplanted in the nearshore ocean for 12h deployment periods (8 daylight periods, 7 night periods), at three different depths (1, 5, and 10m), during stratified water column conditions and spring tides. Algal tissue nitrogen and growth weight (before and after each deployment), water-column temperature (continuous), and inorganic water-column nutrient concentrations (taken on 3days during the experiment) were measured. Abrupt drops in temperature (up to 3°C in an hour) occurred twice daily, at 10m and occasionally at 5m depth, associated with the internal tide. Date and deployment depth had significant effects on U. lactuca tissue nitrogen, showing a significant increase for deeper deployments and a positive correlation with the duration of cool water (< 15.8°C, > 1?M NO 3 -) at the deployment depth. On days when temperature remained above 15.8°C at all depths (15.8°C was established as the temperature below which nitrate was above 1?M), no significant increase in tissue nitrogen was detected at any depth. Growth and tissue nitrogen were significantly and inversely correlated for mid-water (5m) and bottom (10m) deployments, but not at the surface. The data support the hypothesis that U. lactuca can increase tissue nitrogen in response to the cold phase of the semidiurnal internal tide. " 2011 Elsevier B.V.",,,,,,"10.1016/j.jembe.2011.05.028",,,"http://hdl.handle.net/20.500.12104/43153","http://www.scopus.com/inward/record.url?eid=2-s2.0-79960472988&partnerID=40&md5=68875678e9dc799770ac8a14662987ec",,,,,,"01-feb",,"Journal of Experimental Marine Biology and Ecology",,"108

115",,"406",,"Scopus

WOS",,,,,,"Growth; Internal waves; Macroalgae; NE Pacific; Nutrients; Tissue nitrogen",,,,,,"Nitrogen uptake and growth by the opportunistic macroalga Ulva lactuca (Linnaeus) during the internal tide",,"Article" "42993","123456789/35008",,"Nieto, M.C.R., Psychology Faculty Autonomous, University of Nuevo Leon, Monterrey, Nuevo Leon, Mexico; Montemayor, V.P., Psychology Faculty Autonomous, University of Nuevo Leon, Monterrey, Nuevo Leon, Mexico; Ramirez, E.L., Psychology Faculty Autonomous, University of Nuevo Leon, Monterrey, Nuevo Leon, Mexico; Gomez, M.A., Universitary Center Costa, University of Guadalajara, Puerto Vallarta, Guadalajara, Mexico",,"Nieto, M.C.R.

Montemayor, V.P.

Ramirez, E.L.

Gomez, M.A.",,"2005",,"The objective of this work is to detect the students' argumentation's characteristics in the process of obtaining a consensus answer to a detonator question in discussion forums and to relate the argumentation with the consensus answer's individual satisfaction level and the superficial and meaningful learning. The participants were six Master Degree students of first semester. Initially there was an argumentation follow-up in 10 discussion forums. A detonator question was shown in each forum. The messages were classified into model of arguments: lineal and chaotic axis, and clinic and emotional axis. Then, a Scale of Satisfaction Level for consensus answer was applied in each discussion forum. The teacher performed small interviews with the students about the success, the problems detected, the solution alternatives found, their emotions, and their learning processes. In all the discussion forums were presented 653 arguments. All the participants showed high rates of lineal and emotional argumentations in comparison to chaotic and clinic argumentations. The greater quantity of arguments and satisfaction level were related in the students' qualitative reports with more meaningful and collaborative learning.",,,,,,,,,"http://hdl.handle.net/20.500.12104/41214","http://www.scopus.com/inward/record.url?eid=2-s2.0-84896952881&partnerID=40&md5=348b18d4168f345bb37e89992e0ee078",,,,,,,,"3rd International Conference on Education and Information Systems: Technologies and Applications, EISTA 2005, Proceedings",,"259

264",,"2",,"Scopus",,,,,,"Argumentation; Collaborative learning; Discussion forums; Meaningful learning",,,,,,"Emotional argumentation, satisfaction level, and meaningful learning in collaborative tasks in electronic discussion forums",,"Conference Paper" "44905","123456789/35008",,"Corona-Rivera, J.R., Servicio de Genética, División de Pediatría, Nuevo Hospital Civil de Guadalajara Dr. Juan I. Menchaca, Hospital-Escuela, Guadalajara, Jalisco, Mexico, Instituto de Genética Humana Dr. Enrique Corona-Rivera, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Romo-Huerta, C.O., Servicio de Oftalmología, División de Pediatría, Nuevo Hospital Civil de Guadalajara Dr. Juan I. Menchaca, Hospital-Escuela, Guadalajara, Jalisco, Mexico; López-Marure, E., Servicio de Radiología, División de Pediatría, Nuevo Hospital Civil de Guadalajara Dr. Juan I. Menchaca, Hospital-Escuela, Guadalajara, Jalisco, Mexico; Ramos, F.J., Servicio de Pediatría, Hospital Clúnico Universitario Lozano Blesa, Facultad de Medicina, Universidad de Zaragoza, Zaragoza, Spain; Estrada-Padilla, S.A., Instituto de Genética Humana Dr. Enrique Corona-Rivera, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, Jalisco, Mexico; Zepeda-Romero, L.C., Servicio de Oftalmología Pediátrica, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico",,"Corona-Rivera, J.R.

Romo-Huerta, C.O.

Lopez-Marure, E.

Ramos, F.J.

Estrada-Padilla, S.A.

Zepeda-Romero, L.C.",,"2011",,"The Yunis-Varon syndrome (YVS) represents a rare autosomal recessive syndrome of easy recognition characterized by cleidocraneal dysplasia, absence of thumbs and halluces, distal aphalangia, ectodermal anomalies, and poor outcome. Here, we report two sisters with YVS who also had papillo-macular atrophic chorioretinopathy with " salt-and-pepper" appearance that could not be attributed to environmental or metabolic causes. Our best hypothesis is that the ocular findings in our two patients are part of the phenotypic manifestations of YVS. We suggest that an extensive ophthalmologic examination should be carried out in all children with YVS in order to define the frequency and nature of the ocular findings in these patients. " 2010 Elsevier Masson SAS.