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Is there a relationship between dopamine and rhegmatogenous retinal detachment?

Neural Regeneration Research 2020年第2期15卷 311-314页

作者： Alessio Martucci Massimo Cesareo Maria Dolores Pinazo-Durán michela di pierro Matteo di Marino Carlo Nucci Massimiliano Coletta Raffaele Mancino Ophthalmology Unit Department of Experimental MedicineUniversity of Rome Tor VergataRomeItaly Ophthalmic Research Unit "Santiago Grisolia"/FISABIO and Cellular-Molecular Ophthalmobiology Group/University of Valencia ValenciaSpain Department of Clinical Sciences and Translational Medicine University of Rome Tor VergataRomeItaly

Dopamine and its receptors have been widely studied in the neurological conditions and in the retina. In this study, we evaluated the possible role of dopamine in rhegmatogenous retinal detachment(RRD) by comparing the amount of 3,4-dihydroxyphenylacetic acid(DOPAC), a surrogate index of retinal dopamin levels, in the vitreous sample of patients affected by RRD with those affected by macular pucker and vitre ous hemorrhage. Our results showed that significantly higher levels of DOPAC were found in the vitreou sample of patients affected by RRD compared with those affected by vitreous hemorrhage and macula pucker(P = 0.002). Specifically, no trace of the substance was found in vitreous hemorrhage and macula pucker samples. A slightly significant positive correlation was found among DOPAC and post-operativ best corrected visual acuity(r = 0.470, P = 0.049). No correlation was found between DOPAC and the day elapsed between diagnosis and surgery(P = 0.317). For the first time our findings suggest that DOPAC i released in RRD, but not in other retinal diseases such as vitreous hemorrhage and macular pucker. More over, we showed a correlation between visual acuity outcome and the amount of DOPAC in the vitreous This might have a potential, although still unknown, implication in the pathogenesis of the disease and/o in the associated photoreceptors loss. This study was approved by the Ethics Committee of Rome Tor Ver gata University Hospital(R.S.92.10) on September 24, 2010.

关键词： 3,4-dihydroxyphenylacetic acid DOPAC dopamine dopaminergic amacrine cells dopaminergic neurotoxicity macular pucker oxidative stress photoreceptor degeneration rhegmatogenous retinal detachment vitreous hemorrhage

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A high-density, multi-parental SNP genetic map on apple validates a new mapping approach for outcrossing species

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Horticulture Research 2016年第1期3卷 30-42页

作者： Erica A di pierro Luca Gianfranceschi Mario di Guardo Herma JJ Koehorst-van Putten Johannes W Kruisselbrink Sara Longhi michela Troggio Luca Bianco Hélène Muranty Giulia Pagliarani Stefano Tartarini Thomas Letschka Lidia Lozano Luis Larisa Garkava-Gustavsson diego Micheletti Marco CAM Bink Roeland E Voorrips Ebrahimi Aziz Riccardo Velasco François Laurens W Eric van de Weg Department of Biosciences University of MilanMilan20133Italy Plant Breeding Wageningen University and ResearchWageningen6700AJThe Netherlands Research and Innovation Centre Edmund Mach FoundationSan Michele all’Adige38010Italy Biometris Wageningen University and ResearchWageningen6700AAThe Netherlands IRHS INRAAGROCAMPUS-OuestUniversitéd’AngersSFR 4207 QUASAVBeaucouzé49071France Department of Agricultural Sciences University of BolognaBologna40127Italy Department of Molecular Biology Laimburg Research Centre for Agriculture and ForestryOra39040Italy Department of Plant Breeding Swedish University of Agricultural SciencesAlnarp23053Sweden Hendrix Genetics Research Technology&ServicesBoxmeer 5830 ACThe Netherlands

Quantitative trait loci(QTL)mapping approaches rely on the correct ordering of molecular markers along the chromosomes,which can be obtained from genetic linkage maps or a reference genome sequence.For apple(Malus domestica Borkh),the genome sequence v1 and v2 could not meet this need;therefore,a novel approach was devised to develop a dense genetic linkage map,providing the most reliable marker-loci order for the highest possible number of markers.The approach was based on four strategies:(i)the use of multiple full-sib families,(ii)the reduction of missing information through the use of HaploBlocks and alternative calling procedures for single-nucleotide polymorphism(SNP)markers,(iii)the construction of a single backcross-type data set including all families,and(iv)a two-step map generation procedure based on the sequential inclusion of markers.The map comprises 15417 SNP markers,clustered in 3 K HaploBlock markers spanning 1267 cM,with an average distance between adjacent markers of 0.37 cM and a maximum distance of 3.29 cM.Moreover,chromosome 5 was oriented according to its homoeologous chromosome 10.This map was useful to improve the apple genome sequence,design the Axiom Apple 480 K SNP array and perform multifamily-based QTL studies.Its collinearity with the genome sequences v1 and v3 are reported.To our knowledge,this is the shortest published SNP map in apple,while including the largest number of markers,families and individuals.This result validates our methodology,proving its value for the construction of integrated linkage maps for any outbreeding species.

关键词： breeding linkage mapping

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