Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/45534
Title: Unpolarized states and hidden polarization
Author: Chavez-Delgado, M.E.
Gomez-Pinedo, U.
Feria-Velasco, A.
Huerta-Viera, M.
Castro Castaneda, S.
Lopez-Dellamary Toral, F.A.
Parducz, A.
Luquin-De Anda, S.
Mora-Galindo, J.
García-Estrada, J.
Issue Date: 2005
Abstract: Recently, numerous guide chambers for the treatment of injured nerves made up of different biomaterials have been designed, capable of hosting living cells or carrying neurotrophic or neuroactive substances to be directly released to the injured tissue. In this study, chitosan prostheses containing neurosteroids (progesterone and pregnenolone) were used for bridging a 10-mm gap in the rabbit facial nerve. Gas chromatography was used to quantify neurosteroid content in the prostheses prior to and after subcutaneous implantation at different periods of up to 60 days. The regeneration of the nerve fibers were evaluated at 15 and 45 days after axotomy by means of ultrastructural morphometric analysis. Different nerve fibers regenerative patterns were seen depending the groups studied and the analyzed stages. At 15 days after axotomy, the newly regenerating tissue revealed Schwann cells holding nonmyelinated nerve fiber bundles in an incipient and organized regenerative pattern. At 45 days, the regenerating tissue showed myelinated nerve fibers of different sizes, shapes, and myelin sheath thickness. Although the regeneration of the nerve fibers under neurosteroid treatment showed statistically significant differences in comparison with vehicle regenerated tissue, progesterone-loaded chitosan prostheses produced the best guided nerve regeneration response. These findings indicate that chitosan prostheses allowed regeneration of nerve fibers in their lumen, and when containing neurosteroids produced a faster guided nerve regeneration acting as a long-lasting release delivery vehicle. " 2005 Wiley Periodicals, Inc.",,,,,,"10.1002/jbm.b.30243",,,"http://hdl.handle.net/20.500.12104/45534","http://www.scopus.com/inward/record.url?eid=2-s2.0-21444441396&partnerID=40&md5=d335b886a33765afdc8b08f3120c9f99",,,,,,"1",,"Journal of Biomedical Materials Research - Part B Applied Biomaterials",,"589
600",,"74",,"Scopus
WOS",,,,,,"Chitosan; Drug delivery; Facial nerve repairment; Guided tissue regeneration; Nerve guide; Polymers; Pregnenolone; Progesterone",,,,,,"Ultrastructural analysis of guided nerve regeneration using progesterone- and pregnenolone-loaded chitosan prostheses",,"Article" "47322","123456789/35008",,"Bautista, F., Depto. de Ing. Química, Univ. Guadalajara, Boul. M. G., Guadalajara, Jal. 44430, Mexico; De Santos, J.M., Depto. de Ing. Química, Univ. Guadalajara, Boul. M. G., Guadalajara, Jal. 44430, Mexico; Puig, J.E., Depto. de Ing. Química, Univ. Guadalajara, Boul. M. G., Guadalajara, Jal. 44430, Mexico; Manero, O., Inst. de Invest. en Materiales, Univ. Nac. Auton. Mex., Apdo. P., Mexico D.F. 04510, Mexico",,"Bautista, F.
De Santos, J.M.
Puig, J.E.
Manero, O.",,"1999",,"A simple model consisting of the Upper Convected Maxwell constitutive equation and a kinetic equation for destruction and construction of structure, first proposed by Fredrickson in 1970, is used here to reproduce the complex rheological behavior of viscoelastic systems that also exhibit thixotropy and rheopexy under shear flow. The model requires five parameters that have physical significance and that can be estimated from rheological measurements. Several steady and unsteady flow situations were analyzed with the model. The model predicts creep behavior, stress relaxation and the presence of thixotropic loops when the sample is subjected to transient stress cycles. Such behavior has been observed with surfactant-based solutions and dispersions. The role of the characteristic time for structure built up, ?, in the extent and shape of the thixotropic loops is demonstrated.A simple model consisting of the Upper Convected Maxwell constitutive equation and a kinetic equation for destruction and construction of structure, first proposed by Fredrickson in 1970, is used here to reproduce the complex rheological behavior of viscoelastic systems that also exhibit thixotropy and rheopexy under shear flow. The model requires five parameters that have physical significance and that can be estimated from rheological measurements. Several steady and unsteady flow situations were analyzed with the model. The model predicts creep behavior, stress relaxation and the presence of thixotropic loops when the sample is subjected to transient stress cycles. Such behavior has been observed with surfactant-based solutions and dispersions. The role of the characteristic time for structure built up, ?, in the extent and shape of the thixotropic loops is demonstrated.",,,,,,"10.1016/S0377-0257(98)00081-0",,,"http://hdl.handle.net/20.500.12104/45543","http://www.scopus.com/inward/record.url?eid=2-s2.0-0032897033&partnerID=40&md5=a461254a52559bb87d764803f5689465",,,,,,"02-mar",,"Journal of Non-Newtonian Fluid Mechanics",,"93
113",,"80",,"Scopus
WOS",,,,,,"Micellar solutions; Thixotropy; Viscoelasticity",,,,,,"Understanding thixotropic and antithixotropic behavior of viscoelastic micellar solutions and liquid crystalline dispersions. I. The model",,"Article" "47354","123456789/35008",,"Ramos-Remus, C., University of Guadalajara, Department of Rheumatology, Hosp. Especialidades Ctro. Medico N., Guadalajara, Mexico; Gamez-Nava, J.I., Department of Rheumatology, Hosp. Especialidades Ctro. Medico N., Instituto Mexicano del Seguro Social, Guadalajara, Mexico; Gonzalez-Lopez, L., Department of Rheumatology, Hosp. Especialidades Ctro. Medico N., Instituto Mexicano del Seguro Social, Guadalajara, Mexico; Skeith, K.J., Department of Medicine, University of Alberta, Edmonton, Alta., Canada; Perla-Navarro, A.V., Department of Rheumatology, Hosp. Especialidades Ctro. Medico N., Instituto Mexicano del Seguro Social, Guadalajara, Mexico; Galvan-Villegas, F., Department of Rheumatology, Hosp. Especialidades Ctro. Medico N., Instituto Mexicano del Seguro Social, Guadalajara, Mexico; Suarez-Almazor, M.E., Department of Public Health Sciences, University of Alberta, Edmonton, Alta., Canada, Hlth. Care Qual. Outcomes Res. Ctr., 214 Heritage Medical Research Centre, University of Alberta, Edmonton, Alta. T6G 2S2, Canada",,"Ramos-Remus, C.
Gamez-Nava, J.I.
Gonzalez-Lopez, L.
Skeith, K.J.
Perla-Navarro, A.V.
Galvan-Villegas, F.
Suarez-Almazor, M.E.",,"1998",,"Objective. To assess the prevalence, practices, beliefs, and expectations of patients with rheumatic diseases in relation to the use of alternative therapies. Methods. We conducted a cross-sectional survey of 300 consecutive patients with rheumatic diseases at 3 outpatient rheumatic disease clinics in Guadalajara, Mexico to evaluate the use of alternative therapies. A face-to-face structured interview was administered by a trained assistant to evaluate the prevalence of use and patient beliefs, perceptions, and expectations in relation to alternative therapies. Results. Two hundred fifty patients (83%) had used a total of 1386 alternative therapies (range 1-19); 203 (68%) patients had used alternative therapy in the previous 12 months. Sixty-one percent received at least one alternative treatment before the first rheumatology consultation, but an additional 18% initiated these therapies after their initial contact with a rheumatologist at our clinics. Only 66 (26%) of the patients using alternative therapy notified their rheumatologist about their use. Thirty-six patients (14%) discontinued formal treatment at least on one occasion in order to receive alternative therapies, and only 8 (22%) notified their rheumatologist. Alternative therapy practitioners recommended discontinuation of conventional therapy on 57% of the occasions when formal treatments were discontinued. Mean expenditures per patient for fees to alternative therapy providers were equivalent to 28 days of the official minimum daily wage, and per patient costs for the remedies themselves were equivalent to 13 days of the official minimum daily wage. Patients who used alternative therapy in the past 12 months had lower education (7 versus 10 years, P < 0.001) and were slightly more disabled (1.7 versus 1.5, modified Health Assessment Questionnaire, P < 0.01). Conclusions. In this survey most patients used alternative therapies for the treatment of their rheumatic disease. Alternative therapies were costly and appeared to decrease adherence to conventional therapy. Health care providers should openly discuss the use of alternative therapy in patients with rheumatic diseases.",,,,,,,,,"http://hdl.handle.net/20.500.12104/45575","http://www.scopus.com/inward/record.url?eid=2-s2.0-0031792299&partnerID=40&md5=b34014733c635a8473feca969cbef0c8",,,,,,"5",,"Arthritis Care and Research",,"411
418",,"11",,"Scopus
WOS",,,,,,"Alternative remedies; Alternative therapies; Complementary medicine; Rheumatic diseases; Rheumatoid arthritis; Systemic lupus erythematosus",,,,,,"Use of alternative therapies by patients with rheumatic disease in Guadalajara, Mexico: Prevalence, beliefs, and expectations",,"Article" "47314","123456789/35008",,"Corona-Rivera, J.R., Genetic Counseling Clinic, Department of Molecular Biology and Genomics, University of Guadalajara Health Sciences Center, Guadalajara, Jalisco, Mexico; García-Cruz, D., Genetic Counseling Clinic, Department of Molecular Biology and Genomics, University of Guadalajara Health Sciences Center, Guadalajara, Jalisco, Mexico; Estrada-Padilla, S.A., Genetic Counseling Clinic, Department of Molecular Biology and Genomics, University of Guadalajara Health Sciences Center, Guadalajara, Jalisco, Mexico; Pérez-Molina, J.J., Service of Genetics, Division of Pediatrics, Dr. Juan I. Menchaca Civil Hospital of Guadalajara, Guadalajara, Jalisco, Mexico; Villafuerte-Bautista, M.A., Service of Genetics, Division of Pediatrics, Dr. Juan I. Menchaca Civil Hospital of Guadalajara, Guadalajara, Jalisco, Mexico; Tavares-Macas, G., Division of Pathology, Dr. Juan I. Menchaca Civil Hospital of Guadalajara, Guadalajara, Jalisco, Mexico; Cárdenas-Ruíz-Velasco, J.J., Service of Surgery, Division of Pediatrics, Dr. Juan I. Menchaca Civil Hospital of Guadalajara, Guadalajara, Jalisco, Mexico",,"Corona-Rivera, J.R.
García-Cruz, D.
Estrada-Padilla, S.A.
Perez-Molina, J.J.
Villafuerte-Bautista, M.A.
Tavares-Macas, G.
Cardenas-Ruiz-Velasco, J.J.",,"2009",,"Encirclement of a fetal body part by the umbilical cord with or without vascular obstruction in either the umbilical cord or the encircled fetal part is considered an umbilical cord loop (UCL). Significant disruption of the encircled fetal parts is recognized as the umbilical cord disruption sequence (UCDS). UCL around fetal parts is an occasional anomaly in infants with amyoplasia. We report on 2 patients with amyoplasia and damage to the fetal limbs caused by UCDS and a long umbilical cord. Patient 1 showed two deep constrictions on the left lower limb caused by UCL with an intact skin and a mild mark of constriction on the left wrist. The umbilical cord in patient 2 produced 5 entanglements around the left thigh which resulted in a deep groove extending down to the femur and also showed an exposed fracture and gangrene of the entire lower limb with an unusual congenital paraumbilical "stoma" that corresponded to the afferent loops of a jejunal atresia. The UCDS in infants with amyoplasia has been associated with short umbilical cords, whereas in patients without congenital contractures, the UCDS or UCL has been related to long umbilical cords. Our observations of UCDS in patients with amyoplasia but with long umbilical cords suggest the influence of both pathogenic factors or the existence of additional mechanisms. Evidence in patient 2 may support a vascular pathogenesis.",,,,,,"10.1080/15513810902772524",,,"http://hdl.handle.net/20.500.12104/45535","http://www.scopus.com/inward/record.url?eid=2-s2.0-66149097744&partnerID=40&md5=490ce0bee1202b3d5470f30687aea588
http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&D=med5&AN=19365739",,,,,,"3",,"Fetal and Pediatric Pathology",,"101
108",,"28",,"Scopus
WOS
MEDLINE",,,,"Index Medicus;Adult;Arthrogryposis/pa [Pathology];Arthrogryposis;Constriction, Pathologic/co [Complications];Constriction, Pathologic/pa [Pathology];Female;Fetus/ab [Abnormalities];Fetus/pa [Pathology];Fetus;Humans;Infant;Infant, Newborn;Limb Deformities, Congenital/et [Etiology];Limb Deformities, Congenital/pa [Pathology];Male;Pregnancy;Umbilical Cord/ab [Abnormalities];Umbilical Cord/pa [Pathology]",,"Abdominal wall defects; Arthrogryposis multiplex congenita; Gastroschisis; Jejunal atresia; Long umbilical cord; Umbilical cord deformation sequence",,,,,,"Umbilical cord disruption sequence caused by long cord in two unrelated infants with amyoplasia",,"Article" "47330","123456789/35008",,"De La Hoz, P., Departamento de óptica, Facultad de Física, Universidad ComplutenseMadrid, Spain; Bjork, G., Department of Applied Physics, Royal Institute of Technology (KTH), AlbaNovaStockholm, Sweden; Klimov, A.B., Departamento de Física, Universidad de GuadalajaraGuadalajara, Jalisco, Mexico; Leuchs, G., Max-Planck-Institut for Die Physik des Lichts, Günther-Scharowsky-Strasse 1, Bau 24Erlangen, Germany, Department for Physik, Universityt Erlangen-Nürnberg, Staudtstraße 7, Bau 2Erlangen, Germany; Sánchez-Soto, L.L., Departamento de óptica, Facultad de Física, Universidad ComplutenseMadrid, Spain, Max-Planck-Institut for Die Physik des Lichts, Günther-Scharowsky-Strasse 1, Bau 24Erlangen, Germany, Department for Physik, Universityt Erlangen-Nürnberg, Staudtstraße 7, Bau 2Erlangen, Germany
Klimov, Andrei B., Universidad de Guadalajara. Centro Universitario de Ciencias Exactas e Ingenierías",,"De La Hoz, P.
Bjork, G.
Klimov, Andrei B.
Leuchs, G.
Sanchez-Soto, L.L.",,"2014",,"We capitalize on a multipolar expansion of the polarization density matrix, in which multipoles appear as successive moments of the Stokes variables. When all the multipoles up to a given order K vanish, we can properly say that the state is Kth-order unpolarized, as it lacks of polarization information to that order. First-order unpolarized states coincide with the corresponding classical ones, whereas unpolarized to any order tally with the quantum notion of fully invariant states. In between these two extreme cases, there is a rich variety of situations that are explored here. The existence of hidden polarization emerges in a natural way in this context. " 2014 American Physical Society.
URI: http://hdl.handle.net/20.500.12104/45551
http://www.scopus.com/inward/record.url?eid=2-s2.0-84908102206&partnerID=40&md5=b4a484a099eb9faf556d517bf3f50444
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