Please use this identifier to cite or link to this item:
|Title:||Plasma enhanced modification of Xanthan and its use in Chitosan/xanthan Hydrogels|
Vazquez-Del Mercado, M.
|Abstract:||Plasminogen activator inhibitor type 1 (PAI-1) is an inhibitor of plasmin production. Plasmin can directly or indirectly to degrade cartilage and bone matrix. The PAI-1 HindIII polymorphism has been associated with high PAI-1 plasma levels in myocardial infarction patients and control populations. Furthermore, it has been associated with the angiographic extent of coronary artery disease, but their involvement in other diseases is still uncertain. Here, we assessed the relationship between PAI-1 HindIII polymorphism and PAI-1 plasma levels in rheumatoid arthritis (RA). One hundred and twenty-five RA patients and 132 control subjects (CS) were included. Genotypes were identified by the polymerase chain reaction-restriction fragment length polymorphism technique and PAI-1 plasma levels were quantified using an ELISA kit. Not significant differences in genotype and allele frequencies between both studied groups were observed (P > 0.05). RA patients showed lower PAI-1 plasma levels (18.92 12.94 ng/ml) than CS (23.68 23.38 ng/ml), without significant difference (P = 0.299). However, in RA patients the C/G genotype carriers showed higher PAI-1 plasma levels (23.00 13.81 ng/ml) with respect to C/C (16.77 11.97 ng/ml) and G/G (10.47 7.07 ng/ml) genotype carriers (P = 0.036). The PAI-1 HindIII polymorphism was not associated with RA susceptibility. However, the C/G genotype is associated with high PAI-1 plasma levels in RA patients. " 2009 Springer-Verlag.",,,,,,"10.1007/s10238-009-0038-0",,,"http://hdl.handle.net/20.500.12104/43663","http://www.scopus.com/inward/record.url?eid=2-s2.0-70349784020&partnerID=40&md5=3923ca3dad727412b556a32480dcec28|
http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&D=med5&AN=19238514",,,,,,"3",,"Clinical and Experimental Medicine",,"223
WOS",,,,"Index Medicus;Arthritis, Rheumatoid/pa [Pathology];Deoxyribonuclease HindIII/me [Metabolism];Disease Susceptibility;Enzyme-Linked Immunosorbent Assay/mt [Methods];Gene Frequency;Humans;Plasma/ch [Chemistry];Plasminogen Activator Inhibitor 1/bl [Blood];Plasminogen Activator Inhibitor 1/ge [Genetics];Polymerase Chain Reaction/mt [Methods];Polymorphism, Genetic;Polymorphism, Restriction Fragment Length",,"PAI-1; Plasma levels; Polymorphism; Rheumatoid arthritis",,,,,,"Plasminogen activator inhibitor-1 C/G polymorphism in relation to plasma levels in rheumatoid arthritis",,"Article" "45434","123456789/35008",,"Ascencio-Cabral, A., Centro de Investigacion y Asistencia en Tecnologia y Diseno del Estado de Jalisco, A.C., Unidad Biotecnologia Vegetal. Av. Normalistas 800, Guadalajara, Jalisco 44270, Mexico; Gutiérrez-Pulido, H., Departamento de Matemáticas, CUCEI, Universidad de Guadalajara, Corregidora No. 500, Guadalajara, Jalisco 44840, Mexico; Rodríguez-Garay, B., Centro de Investigacion y Asistencia en Tecnologia y Diseno del Estado de Jalisco, A.C., Unidad Biotecnologia Vegetal. Av. Normalistas 800, Guadalajara, Jalisco 44270, Mexico; Gutiérrez-Mora, A., Centro de Investigacion y Asistencia en Tecnologia y Diseno del Estado de Jalisco, A.C., Unidad Biotecnologia Vegetal. Av. Normalistas 800, Guadalajara, Jalisco 44270, Mexico",,"Ascencio-Cabral, A.
Gutierrez-Mora, A.",,"2008",,"Difficulties to develop an easy and reproducible protocol to get healthy and well formed plants from somatic embryos of papaya (Carica papaya L.) had included low germination, callus production at the base of the embryo radicle and the occurrence of hyperhydric plantlets among others, and by consequence unsuccessful transfer to the field. With the aim of improving a propagation method, the effects of light quality, gelling agent and phloridzin concentration on the germination of somatic embryos of hermaphrodite C. papaya L. var. Maradol were studied. Somatic embryos were grown on half strength MS medium, with the addition of Chen vitamins [Chen, M.H., Wang, P.J., Maeda, E., 1987. Somatic embryogenesis and plant regeneration in Carica papaya L. tissue culture derived from root explants. Plant Cell Rep. 6, 348-351], solidified with three distinct gelling agents: Sigma® Agar-Agar, Difco® Bacto agar and Phytagel®; supplemented with phloridzin and exposed to different light qualities: blue (54 ?mol m-2 s-1), red (65 ?mol m-2 s-1), gro-lux (68 ?mol m-2 s-1), red + blue, white (32 ?mol m-2 s-1) and wide spectrum (49 ?mol m-2 s-1) during a period of 4 weeks. Results show that light quality and gelling agent had important effects on germination and plant growth, while 3.0 mg L-1 phloridzin had an important role on germination as well as in root development. Somatic embryos exposed to white light, culture medium solidified with 3.0 mg L-1 phytagel and 3.0 mg L-1 phloridzin showed longer roots. Meanwhile, germination and plant length were promoted on an improved culture medium solidified with 7.5 g L-1 Difco® Bacto agar, 3.0 mg L-1 phloridzin and exposed to gro-lux lamps. Under these conditions, 70% of somatic embryos germinated and developed normal roots without hyperhydricity. The regenerated plantlets with well developed roots and shoots were successfully transferred to a greenhouse with a survival rate of 95%. 2008 Elsevier B.V. All rights reserved.",,,,,,"10.1016/j.scienta.2008.06.014",,,"http://hdl.handle.net/20.500.12104/43655","http://www.scopus.com/inward/record.url?eid=2-s2.0-49949101680&partnerID=40&md5=cd33bcbfb845ee783ac2bf2df7dc27a4",,,,,,"2",,"Scientia Horticulturae",,"155
WOS",,,,,,"Hyperhydricity; Maradol; Phloridzin; Somatic embryogenesis; Tissue culture",,,,,,"Plant regeneration of Carica papaya L. through somatic embryogenesis in response to light quality, gelling agent and phloridzin",,"Article" "45438","123456789/35008",,"Martínez-Gómez, A.J., Department of Chemical Engineering, University of Guadalajara, Guadalajara 44430Jalisco, Mexico; Cruz-Barba, L.E., Department of Chemical Engineering, University of Guadalajara, Guadalajara 44430Jalisco, Mexico; Sánchez-Díaz, J.C., Department of Chemical Engineering, University of Guadalajara, Guadalajara 44430Jalisco, Mexico; Becerra-Bracamontes, F., Department of Chemistry, University of Guadalajara, Guadalajara 44430Jalisco, Mexico; Martínez-Ruvalcaba, A., Department of Chemical Engineering, University of Guadalajara, Guadalajara 44430Jalisco, Mexico",,"Martinez-Gomez, A.J.
Martinez-Ruvalcaba, A.",,"2014",,"This study reports the design and construction of a fluidized bed/non-equilibrium atmospheric-pressureplasma reactor. The mechanical design of the reactor was devised to modify chemically and physically the surface of different powders. The basis for developing the design and construction of the reaction system were the non-equilibrium atmospheric-pressure-plasma phenomenon known as dielectric barrier discharge and the gas-solid bubbling fluidization. The reactor was tested modifying xanthan powder that was used in the synthesis of chitosan/xanthan hydrogels, for which the swelling capacity was measured at different pH levels. The chemical modification of xanthan was carried out in a sequential process of plasma treatment with different exposure times and gas flow (from 0.5 to 5 min), followed by chemical vapor deposition of epichlorohydrin. The swelling experiments reveal that the hydrogels increase its swelling capacity in acidic mediums and when the hydrogel was formed with xanthan with 2 or 3 min of plasma treatment. 2014. " 2013 Society of Plastics Engineers.
|Appears in Collections:||Producción científica UdeG|
Files in This Item:
There are no files associated with this item.
Items in RIUdeG are protected by copyright, with all rights reserved, unless otherwise indicated.