Center for Research and Assistance in Technology and Design of the State of Jalisco

Guadalajara, Mexico

Center for Research and Assistance in Technology and Design of the State of Jalisco

Guadalajara, Mexico

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Anaya-Segura M.A.,Center for Research and Assistance in Technology and Design of the State of Jalisco | Rangel-Villalobos H.,University of Guadalajara | Martinez-Cortes G.,University of Guadalajara | Gomez-Diaz B.,National Institute of Rehabilitation | And 4 more authors.
International Journal of Molecular Sciences | Year: 2016

Duchenne Muscular Dystrophy (DMD) is an X-linked neuromuscular disorder in which the detection of female carriers is of the utmost importance for genetic counseling. Haplotyping with polymorphic markers and quantitation of creatine kinase levels (CK) allow tracking of the at-risk haplotype and evidence muscle damage, respectively. Such approaches are useful for carrier detection in cases of unknown mutations. The lack of informative markers and the inaccuracy of CK affect carrier detection. Therefore, herein we designed novel mini-STR (Short Tandem Repeats) assays to amplify 10 loci within the DMD gene and estimated allele frequencies and the polymorphism information content among other parameters in 337 unrelated individuals from three Mexican populations. In addition, we tested the utility of the assays for carrier detection in three families. Moreover, given that serum levels of miR-206 discern between DMD patients and controls with a high area under the curve (AUC), the potential applicability for carrier detection was assessed. The serum levels of miR-206 of non-carriers (n = 24) and carriers (n = 23) were compared by relative quantitation using real-time PCR (p < 0.05), which resulted in an AUC = 0.80 in the Receiver Operating Characteristic curve analysis. In conclusion, miR-206 has potential as a “liquid biopsy” for carrier detection and genetic counseling in DMD. © 2016 by the authors; licensee MDPI, Basel, Switzerland.


Olmos-Zuniga J.R.,National Institute of Respiratory Diseases Ismael Cosio Villegas | Jasso-Victoria R.,National Institute of Respiratory Diseases Ismael Cosio Villegas | Diaz-Martinez N.E.,Center for Research and Assistance in Technology and Design of the State of Jalisco | Gaxiola-Gaxiola M.O.,National Institute of Respiratory Diseases Ismael Cosio Villegas | And 6 more authors.
Brazilian Journal of Medical and Biological Research | Year: 2016

Various methods are available for preservation of vascular grafts for pulmonary artery (PA) replacement. Lyophilization and cryopreservation reduce antigenicity and prevent thrombosis and calcification in vascular grafts, so both methods can be used to obtain vascular bioprostheses. We evaluated the hemodynamic, gasometric, imaging, and macroscopic and microscopic findings produced by PA reconstruction with lyophilized (LyoPA) grafts and cryopreserved (CryoPA) grafts in dogs. Eighteen healthy crossbred adult dogs of both sexes weighing between 18 and 20 kg were used and divided into three groups of six: group I, PA section and reanastomosis; group II, PA resection and reconstruction with LyoPA allograft; group III, PA resection and reconstruction with CryoPA allograft. Dogs were evaluated 4 weeks after surgery, and the status of the graft and vascular anastomosis were examined macroscopically and microscopically. No clinical, radiologic, or blood-gas abnormalities were observed during the study. The mean pulmonary artery pressure (MPAP) in group III increased significantly at the end of the study compared with baseline (P=0.02) and final [P=0.007, two-way repeat-measures analysis of variance (RM ANOVA)] values. Pulmonary vascular resistance of groups II and III increased immediately after reperfusion and also at the end of the study compared to baseline. The increase shown by group III vs group I was significant only if compared with after surgery and study end (P=0.016 and P=0.005, respectively, two-way RM ANOVA). Microscopically, permeability was reduced by p75% in group III. In conclusion, substitution of PAs with LyoPA grafts is technically feasible and clinically promising. © 2016, Associacao Brasileira de Divulgacao Cientifica. All rights reserved.


PubMed | National Institute of Respiratory Diseases Ismael Cosio Villegas and Center for Research and Assistance in Technology and Design of the State of Jalisco
Type: Journal Article | Journal: Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas | Year: 2015

Various methods are available for preservation of vascular grafts for pulmonary artery (PA) replacement. Lyophilization and cryopreservation reduce antigenicity and prevent thrombosis and calcification in vascular grafts, so both methods can be used to obtain vascular bioprostheses. We evaluated the hemodynamic, gasometric, imaging, and macroscopic and microscopic findings produced by PA reconstruction with lyophilized (LyoPA) grafts and cryopreserved (CryoPA) grafts in dogs. Eighteen healthy crossbred adult dogs of both sexes weighing between 18 and 20 kg were used and divided into three groups of six: group I, PA section and reanastomosis; group II, PA resection and reconstruction with LyoPA allograft; group III, PA resection and reconstruction with CryoPA allograft. Dogs were evaluated 4 weeks after surgery, and the status of the graft and vascular anastomosis were examined macroscopically and microscopically. No clinical, radiologic, or blood-gas abnormalities were observed during the study. The mean pulmonary artery pressure (MPAP) in group III increased significantly at the end of the study compared with baseline (P=0.02) and final [P=0.007, two-way repeat-measures analysis of variance (RM ANOVA)] values. Pulmonary vascular resistance of groups II and III increased immediately after reperfusion and also at the end of the study compared to baseline. The increase shown by group III vs group I was significant only if compared with after surgery and study end (P=0.016 and P=0.005, respectively, two-way RM ANOVA). Microscopically, permeability was reduced by 75% in group III. In conclusion, substitution of PAs with LyoPA grafts is technically feasible and clinically promising.


PubMed | Center for Research and Assistance in Technology and Design of the State of Jalisco, National Polytechnic Institute of Mexico, Institute Seguridad Y Servicios Sociales Of Los Trabajadores Del Estado, National Institute of Rehabilitation and University of Guadalajara
Type: Journal Article | Journal: International journal of molecular sciences | Year: 2016

Duchenne Muscular Dystrophy (DMD) is an X-linked neuromuscular disorder in which the detection of female carriers is of the utmost importance for genetic counseling. Haplotyping with polymorphic markers and quantitation of creatine kinase levels (CK) allow tracking of the at-risk haplotype and evidence muscle damage, respectively. Such approaches are useful for carrier detection in cases of unknown mutations. The lack of informative markers and the inaccuracy of CK affect carrier detection. Therefore, herein we designed novel mini-STR (Short Tandem Repeats) assays to amplify 10 loci within the DMD gene and estimated allele frequencies and the polymorphism information content among other parameters in 337 unrelated individuals from three Mexican populations. In addition, we tested the utility of the assays for carrier detection in three families. Moreover, given that serum levels of miR-206 discern between DMD patients and controls with a high area under the curve (AUC), the potential applicability for carrier detection was assessed. The serum levels of miR-206 of non-carriers (n = 24) and carriers (n = 23) were compared by relative quantitation using real-time PCR (p < 0.05), which resulted in an AUC = 0.80 in the Receiver Operating Characteristic curve analysis. In conclusion, miR-206 has potential as a liquid biopsy for carrier detection and genetic counseling in DMD.


PubMed | Center for Research and Assistance in Technology and Design of the State of Jalisco
Type: Journal Article | Journal: Microbial drug resistance (Larchmont, N.Y.) | Year: 2010

Tuberculosis is the most relevant infectious disease worldwide according to the estimates of the World Health Organization, and despite being a curable disease, it requires a 6-9-month therapy with multiple antibiotics. Intermittent drug therapy due to noncompliance or poor delivery of therapy promotes the emergence of bacterial strains showing resistance to multiple drugs and the rise of extremely drug-resistant strains. Moreover, increased antibiotic resistance has been observed for several microorganisms, including extremely drug-resistant tuberculosis, vancomycin-resistant Enterococcus faecalis, or methicillin-resistant Staphylococcus aureus. In vitro, cathelicidin induction results in enhanced mycobacterial clearance, and synthetic human neutrophil peptides had a rather modest bactericidal effect in Mycobacterium tuberculosis-infected mice. In vivo therapeutic efficacy of improved molecules that show enhanced bactericidal action in vitro remains to be tested.

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