Sökning: "pigment"

Visar resultat 21 - 25 av 200 avhandlingar innehållade ordet pigment.

1. 21. Experimental transplantation of retinal and iris pigment epithelial cells into the subretinal space

   Författare :Sven Crafoord; Jan Ulrik Prause; Linköpings universitet; []
   Nyckelord :MEDICINE; MEDICIN;

   Sammanfattning : A dysfunction of the retinal pigment epithelium (RPE) is the main cause for the development of age-related macular degeneration (ARMD) and visual loss in elderly people. For about 10 years experimental and clinical attempts to transplant RPE cells have been performed. LÄS MER

3. 22. Effects of Vibrio cholerae protease and pigment production on environmental survival and host interaction

   Författare :Karolis Vaitkevicius; Sun Nyunt Wai; Timo Korhonen; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Bacteria-host interaction; Nematode; Metalloprotease; Medical microbiology; Medicinsk mikrobiologi;

   Sammanfattning : Only two out of more than 200 V. cholerae serogroups, classified on the basis of LPS structure, are associated with epidemic or pandemic cholera. These toxigenic serogroups carry phage-derived pathogenicity islands coding for the main virulence factors for establishment of cholera disease – cholera toxin (CTX) and toxin-coregulated pilus (TCP). LÄS MER

4. 23. Quantum Resources for Efficient Excitation Energy Transfer in Natural and Artificial Pigment-Protein Molecular Aggregates

   Författare :Charlotta Bengtson; Erik Sjöqvist; Susana Huelga; Uppsala universitet; []
   Nyckelord :Quantum coherence; quantum correlations; quantum nonlocality; open quantum systems; non-Markovian dynamics; Kemi med inriktning mot kvantkemi; Chemistry with specialization in Quantum Chemistry;

   Sammanfattning : Recently, long-lasting quantum effects in a number of photosynthetic complexes, which are pigment-protein molecular aggregates (PPMAs), were experimentally verified. These findings created an interest in trying to connect the known highly efficient excitation energy transfer (EET) in these systems to the existence of quantum effects such as quantum coherence and quantum correlations. LÄS MER

5. 24. Bothnia dystrophy, a clinical, genetical and electrophysiological study

   Författare :Marie Burstedt; Ola Sandgren; Ola Textorius; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Ophtalmology; retinal pigment epithelium; retinitis pigmentosa; neural retina; electroretinogram; cellular retinaldehyde-binding protein; dark adaptometry; retinal degeneration; Oftalmiatrik; Ophtalmology; Oftalmologi; Ophtalmology; oftalmiatrik;

   Sammanfattning : A high frequency of retinitis pigmentosa (RP) is found in Northern Sweden. In an inventory of autosomal recessive RP patients in Västerbotten County, a great number of cases with a unique phenotype was noticed, denoted Bothnia Dystrophy (BD). LÄS MER

7. 25. Photoreceptors in experimental retinal cell transplants

   Författare :Bengt Juliusson; Lund Oftalmologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Ophtalmology; immunohistochemistry; mice; rabbits; rats; interphotoreceptor matrix; retinal pigment epithelium; photoreceptors; Retina; transplantation; Oftalmologi;

   Sammanfattning : The main objective of this thesis was to investigate the fate of photoreceptor cells when using different strategies for retinal cell transplantation. Comparing transplantation of fragments of embryonic retina with cell suspensions of the same tissue we found that transplantation of fragments of embryonic retina result in mature transplants with a higher degree of cellular organization than transplantation of cell suspensions of embryonic retina. LÄS MER