83 results on '"Pontificia Universidad Javeriana (COLOMBIA)"'
Search Results
52. 8q22.2q22.3 Microdeletion Syndrome Associated with Hearing Loss and Intractable Epilepsy.
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Rincon A, Paez-Rojas P, and Suárez-Obando F
- Abstract
8q22.2q22.3 microdeletion syndrome has been described in only seven patients. We present a new case from Colombia. The characteristics of this condition are developmental delay, microcephaly, seizures, and typical facial dysmorphism. We discuss the clinical phenotype of the patient presenting relevant findings like hearing loss and severe epilepsy and the possible relations between the phenotype and the genes involved in the microdeletion. We describe a female with developmental delay, microcephaly, epilepsy, severe short stature, impaired speech, facial dysmorphism, and congenital deafness. A minimal/maximal deletion of 5.238 Mb and 5.374Mb, respectively, at 8q22.2q22.3 was diagnosed using a genome-wide array. The clinical phenotype is similar to the others seven patients previously reported; however, the severity of epilepsy and the concomitant hearing loss is remarkable, characteristics previously observed independently in only two patients. The KCNS2 gene is located in the deleted regions (8q22.2). Therefore it is a possible candidate for explaining the complex neurologic phenotype.
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- 2019
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53. Gastric sleeve surgery in hemodialysis: A case report.
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Contreras Villamizar KM, Afanador Rubio DC, González González CA, García Padilla PK, and Rodríguez Sánchez MP
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Introduction: Morbid obesity in chronic kidney disease patients on hemodialysis limits access to renal transplantation. We report here a case of a surgical procedure for weight reduction in a hemodialysis patient and adjustment of dry weight through bioelectrical impedance., Case Presentation: A 44-year-old male with CKD on hemodialysis for 26 years. After 3 years on dialysis, he underwent a cadaveric kidney transplant. However, after 8 years of transplant, he loses the kidney graft and returns to dialysis treatment. The patient's BMI increased to 42 kg/m
2 and he had difficult-to-control hypertension and severe sleep apnea. Behavioral, nutritional and pharmacologic measures were not sufficient to achieve an adequate weight control. Thus, a surgical procedure for weight reduction was considered. The patient underwent a laparoscopic gastric sleeve without any complications. Dry weight was adjusted through bioelectrical impedance before each hemodialysis session. The patient did not display hypotension, cramps, or fluid overload. After a 30 kg weight loss, the patient's BMI was 28.3 kg/m2 , allowing registration on the kidney transplant waitlist., Discussion: Obesity in CKD restricts access to kidney transplant waitlist. Bariatric surgery has proven to be safe and effective for sustained weight loss and it seems that the fact that a patient is dialysis dependent does not independently increase post-operatory complications., Conclusion: Surgical procedures for weight reduction in dialysis patients does not independently increase the risk for adverse outcomes after bariatric surgery. The estimation of DW through BIA is an effective method for avoiding complications generated by excessive or deficient ultrafiltration., (Copyright © 2019 The Authors. Published by Elsevier Ltd.. All rights reserved.)- Published
- 2019
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54. Efficacy and safety of sensor-augmented pump therapy (SAPT) with predictive low-glucose management in patients diagnosed with type 1 diabetes mellitus previously treated with SAPT and low glucose suspend.
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Gómez AM, Henao DC, Imitola A, Muñoz OM, Sepúlveda MAR, Kattah L, Guerrero JS, Morros E, Llano JP, Jaramillo MG, and León-Vargas F
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- Adolescent, Adult, Aged, Child, Female, Humans, Hypoglycemia chemically induced, Hypoglycemic Agents, Insulin adverse effects, Male, Middle Aged, Prospective Studies, Treatment Outcome, Withholding Treatment, Young Adult, Blood Glucose analysis, Diabetes Mellitus, Type 1 blood, Diabetes Mellitus, Type 1 drug therapy, Hypoglycemia therapy, Insulin administration & dosage, Insulin Infusion Systems adverse effects
- Abstract
Background: Sensor-augmented insulin pump therapy (SAPT) with low-glucose suspend (LGS) is an effective and safe alternative for treating patients with type 1 diabetes mellitus (T1DM). New predictive low-glucose management (PLGM) systems decrease the severity and duration of hypoglycemic events. However, evidence of benefits in patients previously treated with SAPT-LGS is limited., Methods: A prospective before-after study was conducted in patients with T1DM treated with SAPT-LGS, who were switched to the Minimed
® 640G system with SmartGuard® to assess the impact on A1c levels, severe hypoglycemia (SH), hypoglycemia unawareness (HU), and area under the curve (AUC) <70mg/dL after three months of follow-up., Results: Fifty-five patients with T1DM with a mean age of 37.9 (IQR 6, 79) years and a mean baseline A1c level of 7.52±1.11% were enrolled. After three months under PLGM, A1c levels significantly decreased to 7.18±0.91% (p=0.004). SH rate decreased from 2.47 (CI 0.44, 4.90) to 0.87 (CI 0.22, 1.52) events/patient-year (Incidence rate ratio 0.353, 95% CI 0.178, 0.637), AUC <70mg/dL decreased from 0.59±0.76 to 0.35±0.65mg/dL x minute (p=0.030). HU determined by Clarke questionnaire resolved in 23 out of 30 patients (p=0.002)., Conclusions: This study suggests that SAPT with PLGM decreases the frequency of SH, HU, exposure to glucose levels below 70mg/dL, and A1c levels. Based on these results, this therapy should be considered in T1DM patients previously treated with SAPT-LGS with persistent SH and HU. Further clinical trials comparing the efficacy and safety of these features are required., (Copyright © 2018 SEEN y SED. Publicado por Elsevier España, S.L.U. All rights reserved.)- Published
- 2018
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55. Periodontal Disease, Inflammatory Cytokines, and PGE 2 in Pregnant Patients at Risk of Preterm Delivery: A Pilot Study.
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Latorre Uriza C, Velosa-Porras J, Roa NS, Quiñones Lara SM, Silva J, Ruiz AJ, and Escobar Arregoces FM
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- Adult, Case-Control Studies, Female, Humans, Periodontal Diseases complications, Pilot Projects, Pregnancy, Premature Birth etiology, Severity of Illness Index, Young Adult, Cytokines blood, Dinoprostone blood, Periodontal Diseases blood, Premature Birth blood
- Abstract
Periodontal disease is an infection that, in pregnant women, can act as a risk factor for preterm delivery by increasing local and systemic inflammatory responses. Objective . To analyze the presence of periodontal disease, proinflammatory cytokines, and prostaglandin E
2 (PGE2 ) in pregnant patients at high risk for preterm delivery. Materials and Methods . Pilot study for a case-control study. We included 46 pregnant patients (23 patients at risk of preterm delivery as cases and 23 patients without risk of preterm delivery as controls). We excluded patients who received periodontal treatment, antibiotics, or antimicrobials over the last 3 months as well as those with infections or diseases such as diabetes or hypercholesterolemia. The patients underwent a periodontal assessment, and their levels of cytokines (interleukin- [IL-] 2, IL-6, IL-10, and tumor necrosis factor- [TNF-] α ) and prostaglandin E2 (PGE2 ) were quantified. Results . Patients with periodontal disease showed higher levels of cytokines (IL-2, IL-6, IL-10, and TNF- α ) and PGE2 . Patients at high risk for preterm birth showed higher IL levels compared with patients at low risk for preterm delivery. PGE2 increased with the severity of periodontal disease. PGE2 was higher in patients at low risk for preterm delivery, although this difference was not significant. Conclusion . Periodontal disease can increase the systemic inflammatory response as well as the levels of PGE2 and inflammatory cytokines in pregnant patients.- Published
- 2018
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56. Achievement of low-density lipoprotein cholesterol goals in 18 countries outside Western Europe: The International ChoLesterol management Practice Study (ICLPS).
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Danchin N, Almahmeed W, Al-Rasadi K, Azuri J, Berrah A, Cuneo CA, Karpov Y, Kaul U, Kayıkçıoğlu M, Mitchenko O, Ruiz AJ, Aguilar Salinas CA, Santos RD, Mercier F, and Blom D
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- Adult, Aged, Anticholesteremic Agents adverse effects, Biomarkers blood, Cardiovascular Diseases blood, Cardiovascular Diseases diagnosis, Cardiovascular Diseases epidemiology, Comorbidity, Cross-Sectional Studies, Down-Regulation, Dyslipidemias blood, Dyslipidemias diagnosis, Dyslipidemias epidemiology, Female, Guideline Adherence, Humans, Male, Middle Aged, Practice Guidelines as Topic, Practice Patterns, Physicians', Risk Factors, Sex Factors, Smoking adverse effects, Smoking epidemiology, Time Factors, Treatment Outcome, Anticholesteremic Agents therapeutic use, Cardiovascular Diseases prevention & control, Cholesterol, LDL blood, Dyslipidemias drug therapy
- Abstract
Background Little is known about the achievement of low density lipoprotein cholesterol (LDL-C) targets in patients at cardiovascular risk receiving stable lipid-lowering therapy (LLT) in countries outside Western Europe. Methods This cross-sectional observational study was conducted in 452 centres (August 2015-August 2016) in 18 countries in Eastern Europe, Asia, Africa, the Middle East and Latin America. Patients ( n = 9049) treated for ≥3 months with any LLT and in whom an LDL-C measurement on stable LLT was available within the previous 12 months were included. Results The mean±SD age was 60.2 ± 11.7 years, 55.0% of patients were men and the mean ± SD LDL-C value on LLT was 2.6 ± 1.3 mmol/L (101.0 ± 49.2 mg/dL). At enrolment, 97.9% of patients were receiving a statin (25.3% on high intensity treatment). Only 32.1% of the very high risk patients versus 51.9% of the high risk and 55.7% of the moderate risk patients achieved their LDL-C goals. On multivariable analysis, factors independently associated with not achieving LDL-C goals were no (versus lower dose) statin therapy, a higher (versus lower) dose of statin, statin intolerance, overweight and obesity, female sex, neurocognitive disorders, level of cardiovascular risk, LDL-C value unknown at diagnosis, high blood pressure and current smoking. Diabetes was associated with a lower risk of not achieving LDL-C goals. Conclusions These observational data suggest that the achievement of LDL-C goals is suboptimal in selected countries outside Western Europe. Efforts are needed to improve the management of patients using combination therapy and/or more intensive LLTs.
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- 2018
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57. Randomized trial of iReadMore word reading training and brain stimulation in central alexia.
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Woodhead ZVJ, Kerry SJ, Aguilar OM, Ong YH, Hogan JS, Pappa K, Leff AP, and Crinion JT
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- Adult, Aged, Aphasia therapy, Brain, Dyslexia therapy, Female, Humans, Language, Male, Middle Aged, Prefrontal Cortex physiopathology, Semantics, Stroke complications, Transcranial Direct Current Stimulation methods, Verbal Learning, Dyslexia, Acquired therapy, Reading
- Abstract
Central alexia is an acquired reading disorder co-occurring with a generalized language deficit (aphasia). We tested the impact of a novel training app, 'iReadMore', and anodal transcranial direct current stimulation of the left inferior frontal gyrus, on word reading ability in central alexia. The trial was registered at www.clinicaltrials.gov (NCT02062619). Twenty-one chronic stroke patients with central alexia participated. A baseline-controlled, repeated-measures, crossover design was used. Participants completed two 4-week blocks of iReadMore training, one with anodal stimulation and one with sham stimulation (order counterbalanced between participants). Each block comprised 34 h of iReadMore training and 11 stimulation sessions. Outcome measures were assessed before, between and after the two blocks. The primary outcome measures were reading ability for trained and untrained words. Secondary outcome measures included semantic word matching, sentence reading, text reading and a self-report measure. iReadMore training resulted in an 8.7% improvement in reading accuracy for trained words (95% confidence interval 6.0 to 11.4; Cohen's d = 1.38) but did not generalize to untrained words. Reaction times also improved. Reading accuracy gains were still significant (but reduced) 3 months after training cessation. Anodal transcranial direct current stimulation (compared to sham), delivered concurrently with iReadMore, resulted in a 2.6% (95% confidence interval -0.1 to 5.3; d = 0.41) facilitation for reading accuracy, both for trained and untrained words. iReadMore also improved performance on the semantic word-matching test. There was a non-significant trend towards improved self-reported reading ability. However, no significant changes were seen at the sentence or text reading level. In summary, iReadMore training in post-stroke central alexia improved reading ability for trained words, with good maintenance of the therapy effect. Anodal stimulation resulted in a small facilitation (d = 0.41) of learning and also generalized to untrained items.10.1093/brain/awy138_video1awy138media15796149281001.
- Published
- 2018
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58. Mutational spectrum in a worldwide study of 29,700 families with BRCA1 or BRCA2 mutations.
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Rebbeck TR, Friebel TM, Friedman E, Hamann U, Huo D, Kwong A, Olah E, Olopade OI, Solano AR, Teo SH, Thomassen M, Weitzel JN, Chan TL, Couch FJ, Goldgar DE, Kruse TA, Palmero EI, Park SK, Torres D, van Rensburg EJ, McGuffog L, Parsons MT, Leslie G, Aalfs CM, Abugattas J, Adlard J, Agata S, Aittomäki K, Andrews L, Andrulis IL, Arason A, Arnold N, Arun BK, Asseryanis E, Auerbach L, Azzollini J, Balmaña J, Barile M, Barkardottir RB, Barrowdale D, Benitez J, Berger A, Berger R, Blanco AM, Blazer KR, Blok MJ, Bonadona V, Bonanni B, Bradbury AR, Brewer C, Buecher B, Buys SS, Caldes T, Caliebe A, Caligo MA, Campbell I, Caputo SM, Chiquette J, Chung WK, Claes KBM, Collée JM, Cook J, Davidson R, de la Hoya M, De Leeneer K, de Pauw A, Delnatte C, Diez O, Ding YC, Ditsch N, Domchek SM, Dorfling CM, Velazquez C, Dworniczak B, Eason J, Easton DF, Eeles R, Ehrencrona H, Ejlertsen B, Engel C, Engert S, Evans DG, Faivre L, Feliubadaló L, Ferrer SF, Foretova L, Fowler J, Frost D, Galvão HCR, Ganz PA, Garber J, Gauthier-Villars M, Gehrig A, Gerdes AM, Gesta P, Giannini G, Giraud S, Glendon G, Godwin AK, Greene MH, Gronwald J, Gutierrez-Barrera A, Hahnen E, Hauke J, Henderson A, Hentschel J, Hogervorst FBL, Honisch E, Imyanitov EN, Isaacs C, Izatt L, Izquierdo A, Jakubowska A, James P, Janavicius R, Jensen UB, John EM, Vijai J, Kaczmarek K, Karlan BY, Kast K, Investigators K, Kim SW, Konstantopoulou I, Korach J, Laitman Y, Lasa A, Lasset C, Lázaro C, Lee A, Lee MH, Lester J, Lesueur F, Liljegren A, Lindor NM, Longy M, Loud JT, Lu KH, Lubinski J, Machackova E, Manoukian S, Mari V, Martínez-Bouzas C, Matrai Z, Mebirouk N, Meijers-Heijboer HEJ, Meindl A, Mensenkamp AR, Mickys U, Miller A, Montagna M, Moysich KB, Mulligan AM, Musinsky J, Neuhausen SL, Nevanlinna H, Ngeow J, Nguyen HP, Niederacher D, Nielsen HR, Nielsen FC, Nussbaum RL, Offit K, Öfverholm A, Ong KR, Osorio A, Papi L, Papp J, Pasini B, Pedersen IS, Peixoto A, Peruga N, Peterlongo P, Pohl E, Pradhan N, Prajzendanc K, Prieur F, Pujol P, Radice P, Ramus SJ, Rantala J, Rashid MU, Rhiem K, Robson M, Rodriguez GC, Rogers MT, Rudaitis V, Schmidt AY, Schmutzler RK, Senter L, Shah PD, Sharma P, Side LE, Simard J, Singer CF, Skytte AB, Slavin TP, Snape K, Sobol H, Southey M, Steele L, Steinemann D, Sukiennicki G, Sutter C, Szabo CI, Tan YY, Teixeira MR, Terry MB, Teulé A, Thomas A, Thull DL, Tischkowitz M, Tognazzo S, Toland AE, Topka S, Trainer AH, Tung N, van Asperen CJ, van der Hout AH, van der Kolk LE, van der Luijt RB, Van Heetvelde M, Varesco L, Varon-Mateeva R, Vega A, Villarreal-Garza C, von Wachenfeldt A, Walker L, Wang-Gohrke S, Wappenschmidt B, Weber BHF, Yannoukakos D, Yoon SY, Zanzottera C, Zidan J, Zorn KK, Hutten Selkirk CG, Hulick PJ, Chenevix-Trench G, Spurdle AB, Antoniou AC, and Nathanson KL
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- Databases, Genetic, Family, Geography, Humans, BRCA1 Protein genetics, BRCA2 Protein genetics, Internationality, Mutation genetics
- Abstract
The prevalence and spectrum of germline mutations in BRCA1 and BRCA2 have been reported in single populations, with the majority of reports focused on White in Europe and North America. The Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA) has assembled data on 18,435 families with BRCA1 mutations and 11,351 families with BRCA2 mutations ascertained from 69 centers in 49 countries on six continents. This study comprehensively describes the characteristics of the 1,650 unique BRCA1 and 1,731 unique BRCA2 deleterious (disease-associated) mutations identified in the CIMBA database. We observed substantial variation in mutation type and frequency by geographical region and race/ethnicity. In addition to known founder mutations, mutations of relatively high frequency were identified in specific racial/ethnic or geographic groups that may reflect founder mutations and which could be used in targeted (panel) first pass genotyping for specific populations. Knowledge of the population-specific mutational spectrum in BRCA1 and BRCA2 could inform efficient strategies for genetic testing and may justify a more broad-based oncogenetic testing in some populations., (© 2018 Wiley Periodicals, Inc.)
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- 2018
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59. Early molecular response and microanatomical changes in the masseter muscle and mandibular head after botulinum toxin intervention in adult mice.
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Balanta-Melo J, Toro-Ibacache V, Torres-Quintana MA, Kupczik K, Vega C, Morales C, Hernández-Moya N, Arias-Calderón M, Beato C, and Buvinic S
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- Animals, Atrophy, Injections, Intramuscular, Male, Mandibular Condyle metabolism, Masseter Muscle metabolism, Mice, Mice, Inbred BALB C, Muscle Proteins biosynthesis, Osteoporosis pathology, Paralysis chemically induced, RNA, Messenger analysis, RNA, Messenger biosynthesis, Botulinum Toxins, Type A pharmacology, Mandibular Condyle drug effects, Mandibular Condyle ultrastructure, Masseter Muscle drug effects, Masseter Muscle ultrastructure, Neuromuscular Agents pharmacology
- Abstract
Background: Masseter muscle paralysis induced by botulinum toxin type A (BoNTA) evokes subchondral bone loss in mandibular heads of adult rats and growing mice after 4 weeks. However, the primary cellular and molecular events leading to altered bone remodeling remain unexplored. Thus, the aim of the current work has been to assess the molecular response that precedes the early microanatomical changes in the masseter muscle and subchondral bone of the mandibular head in adult mice after BoNTA intervention., Methods: A pre-clinical in vivo study was performed by a single intramuscular injection of 0.2 U BoNTA in the right masseter (experimental) of adult BALB/c mice. The contralateral masseter was injected with vehicle (control). Changes in mRNA levels of molecular markers of bone loss or muscle atrophy/regeneration were addressed by qPCR at day 2 or 7, respectively. mRNA levels of receptor activator of nuclear factor-κB ligand (RANKL) was assessed in mandibular heads, whilst mRNA levels of Atrogin-1/MAFbx, MuRF-1 and Myogenin were addressed in masseter muscles. In order to identify the early microanatomical changes at day 14, fiber diameters in transversal sections of masseter muscles were quantified, and histomorphometric analysis was used to determine the bone per tissue area and the trabecular thickness of subchondral bone of the mandibular heads., Results: An increase of up to 4-fold in RANKL mRNA levels were detected in mandibular heads of the BoNTA-injected sides as early as 2 days after intervention. Moreover, a 4-6 fold increase in Atrogin-1/MAFbx and MuRF-1 and an up to 25 fold increase in Myogenin mRNA level were detected in masseter muscles 7 days after BoNTA injections. Masseter muscle mass, as well as individual muscle fiber diameter, were significantly reduced in BoNTA-injected side after 14 days post-intervention. At the same time, in the mandibular heads from the treated side, the subchondral bone loss was evinced by a significant reduction in bone per tissue area (-40%) and trabecular thickness (-55%)., Conclusions: Our results show that masseter muscle paralysis induced by BoNTA leads to significant microanatomical changes by day 14, preceded by molecular changes as early as 2 days in bone, and 7 days in muscle. Therefore, masseter muscle atrophy and subchondral bone loss detected at 14 days are preceded by molecular responses that occur during the first week after BoNTA intervention., (Copyright © 2017 Elsevier GmbH. All rights reserved.)
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- 2018
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60. [Multimorbidity, Depressive Symptoms, and Self-Reported Health in Older Adults: a Secondary Analysis of the Sabe Bogota Study].
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Camargo-Casas S, Suarez-Monsalve S, Zepeda MUP, García-Peña C, and Cano-Gutierrez CA
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- Aged, Aged, 80 and over, Chronic Disease epidemiology, Colombia epidemiology, Cross-Sectional Studies, Female, Humans, Logistic Models, Male, Middle Aged, Multimorbidity, Psychiatric Status Rating Scales, Surveys and Questionnaires, Depression epidemiology, Health Status, Self Report
- Abstract
Background: Multimorbidity and depressive symptoms (DSs) are common in older adults. Self-rated health (SRH) allows detection of elderly adults with a high burden of multimorbidity plus depression. The aim of this study was to test the association of groups of multimorbidity and DS on SRH in Colombian older adults., Methods: We conducted a cross-sectional study in 2012 in Bogotá, Colombia, called "Salud, Bienestar y Envejecimiento" (Health, Well-being, and Aging), including 2000 community-dwelling adults 60 years of age or older. SRH was assessed with the question "How would you rate your health?" giving five possible answers. DSs were rated using the 15-question version of the geriatric depression scale, and multimorbidity was defined as having two or more chronic diseases. A logistic regression model was used to identify the association between grouped DS and multimorbidity with SRH., Results: Groups were distributed as follows: 678 with no DS/no multimorbidity (33.9%), 808 with only multimorbidity (40%), 128 with DS only (6.4%), and 386 with DS/multimorbidity (19.3%). An association of fair/poor SRH with DS/multimorbidity group was found (odds ratio 5.5; 95% confidence interval 3.86-7.95, p < 0.001) when compared to subjects without any of those conditions., Conclusion: There was an incremental association between DS and multimorbidity with SRH. An older adult referring to his or her own health with a negative connotation should alert to a higher burden of diseases, including DS., (Copyright: © 2017 SecretarÍa de Salud.)
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- 2018
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61. Clinical and Demographic Variables Associated Coping and the Burden of Caregivers of Schizophrenia Patients.
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Mora-Castañeda B, Márquez-González M, Fernández-Liria A, de la Espriella R, Torres N, and Arenas Borrero Á
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- Adult, Age Factors, Aged, Cross-Sectional Studies, Educational Status, Female, Humans, Male, Middle Aged, Social Support, Surveys and Questionnaires, Time Factors, Young Adult, Adaptation, Psychological, Caregivers psychology, Cost of Illness, Schizophrenia therapy
- Abstract
Objective: To analyse of the relationship between burden of illness and coping strategies and the demographic variables of caregivers, and the demographic and clinical variables of people diagnosed with schizophrenia., Methods: Multicentre correlational cross-sectional study including 70 people diagnosed with schizophrenia, or a schizoaffective disorder, and 70 primary informal caregivers. They were evaluated using Zarit Caregiver Burden Inventory, Family Coping Strategies Questionnaire, Scale for the Assessment of Positive Symptoms, Scale for the Assessment of Negative Symptoms, and the brief Disability Assessment Scale., Results: Burden of illness positively associated with patient impairment in occupational and social functioning, and negatively with education level. Avoidance, coercion and positive communication were positively associated with impairment in occupational and social functioning of patients. Social interest and friendships showed a positive association with the education level of caregivers. Spiritual assistance negatively correlated with impairment in social functioning and patient age, and resignation was negatively associated with length of the disorder and patient education level., Conclusions: Burden and dysfunctional coping strategies, such as avoidance and coercion, are associated with functional impairment of the patient. These findings suggest the need to provide support to caregivers, adjusted to the functional level of the patient, in order to prevent burden of care., (Copyright © 2016 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España. All rights reserved.)
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- 2018
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62. Tackling variability: A multicenter study to provide a gold-standard network approach for frontotemporal dementia.
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Sedeño L, Piguet O, Abrevaya S, Desmaras H, García-Cordero I, Baez S, Alethia de la Fuente L, Reyes P, Tu S, Moguilner S, Lori N, Landin-Romero R, Matallana D, Slachevsky A, Torralva T, Chialvo D, Kumfor F, García AM, Manes F, Hodges JR, and Ibanez A
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- Aged, Alzheimer Disease diagnostic imaging, Alzheimer Disease physiopathology, Aphasia, Primary Progressive diagnostic imaging, Aphasia, Primary Progressive physiopathology, Argentina, Atrophy, Australia, Colombia, Female, Humans, Male, Middle Aged, Neural Pathways diagnostic imaging, Neural Pathways physiopathology, Reproducibility of Results, Stroke diagnostic imaging, Stroke physiopathology, Brain diagnostic imaging, Brain physiopathology, Brain Mapping instrumentation, Brain Mapping methods, Brain Mapping standards, Frontotemporal Dementia diagnostic imaging, Frontotemporal Dementia physiopathology, Magnetic Resonance Imaging instrumentation, Magnetic Resonance Imaging methods, Magnetic Resonance Imaging standards
- Abstract
Biomarkers represent a critical research area in neurodegeneration disease as they can contribute to studying potential disease-modifying agents, fostering timely therapeutic interventions, and alleviating associated financial costs. Functional connectivity (FC) analysis represents a promising approach to identify early biomarkers in specific diseases. Yet, virtually no study has tested whether potential FC biomarkers prove to be reliable and reproducible across different centers. As such, their implementation remains uncertain due to multiple sources of variability across studies: the numerous international centers capable conducting FC research vary in their scanning equipment and their samples' socio-cultural background, and, more troublingly still, no gold-standard method exists to analyze FC. In this unprecedented study, we aim to address both issues by performing the first multicenter FC research in the behavioral-variant frontotemporal dementia (bvFTD), and by assessing multiple FC approaches to propose a gold-standard method for analysis. We enrolled 52 bvFTD patients and 60 controls from three international clinics (with different fMRI recording parameters), and three additional neurological patient groups. To evaluate FC, we focused on seed analysis, inter-regional connectivity, and several graph-theory approaches. Only graph-theory analysis, based on weighted-matrices, yielded consistent differences between bvFTD and controls across centers. Also, graph metrics robustly discriminated bvFTD from the other neurological conditions. The consistency of our findings across heterogeneous contexts highlights graph-theory as a potential gold-standard approach for brain network analysis in bvFTD. Hum Brain Mapp 38:3804-3822, 2017. © 2017 Wiley Periodicals, Inc., (© 2017 Wiley Periodicals, Inc.)
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- 2017
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63. Latin American Clinical Epidemiology Network Series - Paper 1: The Latin American Clinical Epidemiology Network "LatinCLEN".
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Gómez Restrepo C, Muñoz N S, Ruiz AJ, and Lanas F
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- Developing Countries, Humans, Latin America, Clinical Studies as Topic, Epidemiologic Studies
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The Latin American Clinical Epidemiology Network (LatinCLEN) was born in the 90s as a branch of the International Clinical Epidemiology Network. Clinical Epidemiology Units that made up this network in the region were initially composed of health professionals trained in Australia and North America. From these units, second- and third-generation training centers started to develop in the region, with the main purpose of introducing clinical research methodology and critical appraisal, as well as health economics and biostatistics. The field of Clinical Epidemiology has been introduced into health schools, and has had great influence on health policies and practices in Latin America. The articles in this series provide a bird's eye view of research development in the region which include, among others, the capacity to conduct clinical trials on innovative therapies, systematic reviews, economic analyses, as well as studies on risk factors and burden of illness., (Copyright © 2016 Elsevier Inc. All rights reserved.)
- Published
- 2017
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64. Commentary to: Does maternal exposure during pregnancy to higher ambient temperature increase the risk of hypospadias?
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Fernandez N and Zarante I
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- Case-Control Studies, Female, Humans, Male, Pregnancy, Prenatal Exposure Delayed Effects, Risk Factors, Temperature, Hypospadias, Maternal Exposure
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- 2017
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65. First Symptoms and Neurocognitive Correlates of Behavioral Variant Frontotemporal Dementia.
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Santamaría-García H, Reyes P, García A, Baéz S, Martinez A, Santacruz JM, Slachevsky A, Sigman M, Matallana D, and Ibañez A
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- Aged, Female, Humans, Image Processing, Computer-Assisted methods, Magnetic Resonance Imaging methods, Male, Middle Aged, Retrospective Studies, Frontotemporal Dementia diagnostic imaging, Frontotemporal Dementia psychology, Neuropsychological Tests
- Abstract
Background: Previous works highlight the neurocognitive differences between apathetic and disinhibited clinical presentations of the behavioral variant frontotemporal dementia (bvFTD). However, little is known regarding how the early presentation (i.e., first symptom) is associated to the neurocognitive correlates of the disease's clinical presentation at future stages of disease., Objectives: We analyzed the neurocognitive correlates of patients with bvFTD who debuted with apathy or disinhibition as first symptom of disease., Methods: We evaluated the neuropsychological, clinical, and neuroanatomical (3T structural images) correlates in a group of healthy controls (n = 30) and two groups of bvFTD patients (presented with apathy [AbvFTD, n = 18] or disinhibition [DbvFTD, n = 16]). To differentiate groups according to first symptoms, we used multivariate analyses., Results: The first symptom in patients described the evolution of the disease. AbvFTD and DbvFTD patients showed increased brain atrophy and increased levels of disinhibition and apathy, respectively. Whole brain analyzes in AbvFTD revealed atrophy in the frontal, insular, and temporal areas. DbvFTD, in turn, presented atrophy in the prefrontal regions, temporoparietal junction, insula, and temporoparietal region. Increased atrophy in DbvFTD patients (compared to AbvFTD) was observed in frontotemporal regions. Multivariate analyses confirmed that a set of brain areas including right orbitofrontal, right dorsolateral prefrontal, and left caudate were enough to distinguish the patients' subgroups.∥Conclusion: First symptom in bvFTD patients described the neurocognitive impairments after around three years of disease, playing an important role in the early detection, disease tracking, and neuroanatomical specification of bvFTD, as well as in future research on potential disease-modifying treatments.
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- 2016
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66. Urban environment interventions linked to the promotion of physical activity: a mixed methods study applied to the urban context of Latin America.
- Author
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Gomez LF, Sarmiento R, Ordoñez MF, Pardo CF, de Sá TH, Mallarino CH, Miranda JJ, Mosquera J, Parra DC, Reis R, and Quistberg DA
- Subjects
- Health Policy, Latin America, Health Promotion supply & distribution, Motor Activity, Socioeconomic Factors, Urban Health, Urban Population
- Abstract
This study summarizes the evidence from quantitative systematic reviews that assessed the association between urban environment attributes and physical activity. It also documents sociopolitical barriers and facilitators involved in urban interventions linked with active living in the ten most populated urban settings of Latin America. The synthesis of evidence indicates that several attributes of urban environments are associated with physical activity, including land-use mix and cycling infrastructure. The documentary analysis indicated that despite the benefits and opportunities provided by the programs and existing infrastructure in the examined cities, an overall concern is the rising inequality in the coverage and distribution of the initiatives in the region. If these programs and initiatives are to achieve a real population level effect that helps to reduce health disparities, they need to examine their social and spatial distribution within the cities so they can reach underserved populations and develop to their full potential., (Copyright © 2015 Elsevier Ltd. All rights reserved.)
- Published
- 2015
- Full Text
- View/download PDF
67. Aspects that facilitate or interfere in the communication process between nursing professionals and patients in critical state.
- Author
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Achury Saldaña DM, Pinilla Alarcón M, and Alvarado Romero H
- Subjects
- Adult, Colombia, Critical Illness nursing, Female, Humans, Intensive Care Units, Male, Surveys and Questionnaires, Young Adult, Communication, Nurse-Patient Relations, Nurses organization & administration, Nursing Care organization & administration
- Abstract
Objective: To describe aspects facilitating or interfering in the communication process between nursing professionals and patients in critical state., Methodology: Descriptive study conducted during the second semester of 2013, with the participation of 112 nurses who work in Intensive Care Units of Bogotá (Colombia). To gather the information, the researchers designed a survey., Results: A total of 91.6% of the nursing professionals considers communication important with patients and their families; 75.9% seeks to provide, during the care interventions, physical care and communicate per shift from two to four times with the patient and from one to two times with the family; 50% states feeling afraid to communicate; only 53.7% integrate their emotions in the patient's physical care. Regarding the elements of communication developed during their graduate formation, 42.8% received tools of therapeutic communication during their undergraduate studies and only 33.0% during graduate studies. It is worth to indicate that 80.36% of the Intensive Care Units, where the nursing professionals work, privilege interventions aimed at satisfying physiological needs., Conclusion: The communication process between nurses and patients in critical state is limited by restrictive institutional policies and by the nurse' scarce academic formation. The need exists to start a process of change in relation to models of professional practice deeply rooted in physical care of critical patients to establish models that, during physical care, are centered on communication and the patient-family-professional relationship.
- Published
- 2015
- Full Text
- View/download PDF
68. [Spontaneous speech prosody and discourse analysis in schizophrenia and Fronto Temporal Dementia (FTD) patients].
- Author
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Martínez A, Felizzola Donado CA, and Matallana Eslava DL
- Subjects
- Comprehension, Diagnosis, Differential, Frontotemporal Dementia physiopathology, Humans, Schizophrenia physiopathology, Speech Disorders diagnosis, Speech Production Measurement methods, Frontotemporal Dementia complications, Schizophrenia complications, Speech Disorders etiology
- Abstract
Unlabelled: Patients with schizophrenia and Frontotemporal Dementia (FTD) in their linguistic variants share some language characteristics such as the lexical access difficulties, disordered speech with disruptions, many pauses, interruptions and reformulations. For the schizophrenia patients it reflects a difficulty of affect expression, while for the FTD patients it reflects a linguistic issue., Methods: This study, through an analysis of a series of cases assessed Clinic both in memory and on the Mental Health Unit of HUSI-PUJ (Hospital Universitario San Ignacio), with additional language assessment (analysis speech and acoustic analysis), present distinctive features of the DFT in its linguistic variants and schizophrenia that will guide the specialist in finding early markers of a differential diagnosis., Results: In patients with FTD language variants, in 100% of cases there is a difficulty understanding linguistic structure of complex type; and important speech fluency problems. In patients with schizophrenia, there are significant alterations in the expression of the suprasegmental elements of speech, as well as disruptions in discourse., Conclusions: We present how depth language assessment allows to reassess some of the rules for the speech and prosody analysis of patients with dementia and schizophrenia; we suggest how elements of speech are useful in guiding the diagnosis and correlate functional compromise in everyday psychiatrist's practice., (Copyright © 2014 Asociación Colombiana de Psiquiatría. Publicado por Elsevier España. All rights reserved.)
- Published
- 2015
- Full Text
- View/download PDF
69. The importance of research in undergraduate medical education.
- Author
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Ávila MJ and Rodríguez-Restrepo A
- Subjects
- Humans, Education, Medical, Undergraduate methods, Research, Students, Medical
- Abstract
Currently medical information flows at great speed, bombarding medical students. Students are unfamiliar with fundamental aspects of biomedical literature appraisal. We assert that research performed during medical school will help to reduce the gap between the information available and comprehension by the student. The goal of the present review is to expound the importance of performing research during the undergraduate medical years and the relevance of research in other fields of medicine. We performed a literature review searching MEDLINE with terms consistent with our objective. We discuss the conduct of research projects during medical school training. The analysis of the articles retrieved proves that research is feasible and that it is a critical process during the undergraduate period for medical students.
- Published
- 2014
- Full Text
- View/download PDF
70. Screen time, cardiorespiratory fitness and adiposity among school-age children from Monteria, Colombia.
- Author
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Arango CM, Parra DC, Gómez LF, Lema L, Lobelo F, and Ekelund U
- Subjects
- Adolescent, Body Mass Index, Child, Colombia, Female, Humans, Male, Time Factors, Young Adult, Adiposity, Computers statistics & numerical data, Physical Fitness, Sedentary Behavior, Television statistics & numerical data, Video Games statistics & numerical data
- Abstract
Objectives: To explore the association between electronic media exposure (television viewing time, personal computer/video game use, total screen time), and waist circumference and body mass index, and study whether this association is independent of cardiorespiratory fitness, in a representative sample of adolescents from Montería, Colombia., Design: Cross-sectional study analyzing data from 546 students aged 11-18 years, from fourteen randomly selected schools. Z-scores for WC and BMI were calculated., Methods: The physical activity module of the Global School Health Survey 2007 was used to determine EME, and the shuttle run test was used to assess CRF. Linear regression models adjusted by age, school location, physical activity level, type of institution (public or private), consumption of sweetened beverages, fast food, and fried food were used., Results: Among boys, independently of cardiorespiratory fitness, high television viewing time (≥ 2 h/day) (β=+0.22; p<0.02), was positively associated with waist circumference. High total screen time (>3h/day) was positively associated with waist circumference (β=+0.34; p<0.01), and body mass index (β=+0.39; p<0.01). Among girls, sedentary behavior was not associated with adiposity, but cardiorespiratory fitness (β=-0.04; p<0.02) was negatively associated with body mass index., Conclusions: These findings support the evidence on the negative impact of excessive electronic media exposure and low cardiorespiratory fitness, and highlight the need for interventions and prevention strategies., (Copyright © 2013 Sports Medicine Australia. All rights reserved.)
- Published
- 2014
- Full Text
- View/download PDF
71. Bullying in authorship: abusive mentorship and undeserved credit.
- Author
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Avila M
- Subjects
- Bullying, Humans, Authorship standards, Mentors, Periodicals as Topic, Publishing ethics
- Published
- 2014
- Full Text
- View/download PDF
72. SHOX gene and conserved noncoding element deletions/duplications in Colombian patients with idiopathic short stature.
- Author
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Sandoval GT, Jaimes GC, Barrios MC, Cespedes C, and Velasco HM
- Abstract
SHOX gene mutations or haploinsufficiency cause a wide range of phenotypes such as Leri Weill dyschondrosteosis (LWD), Turner syndrome, and disproportionate short stature (DSS). However, this gene has also been found to be mutated in cases of idiopathic short stature (ISS) with a 3-15% frequency. In this study, the multiplex ligation-dependent probe amplification (MLPA) technique was employed to determine the frequency of SHOX gene mutations and their conserved noncoding elements (CNE) in Colombian patients with ISS. Patients were referred from different centers around the county. From a sample of 62 patients, 8.1% deletions and insertions in the intragenic regions and in the CNE were found. This result is similar to others published in other countries. Moreover, an isolated case of CNE 9 duplication and a new intron 6b deletion in another patient, associated with ISS, are described. This is one of the first studies of a Latin American population in which deletions/duplications of the SHOX gene and its CNE are examined in patients with ISS.
- Published
- 2014
- Full Text
- View/download PDF
73. [Behavior of hypertensive renal diseases in Mexico between 1998-2009. A growing problem].
- Author
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Rodríguez Hernández JM, González Nájera R, and Albavera Hernández C
- Subjects
- Aged, Female, Humans, Hypertension complications, Kidney Diseases complications, Longitudinal Studies, Male, Mexico epidemiology, Time Factors, Hypertension epidemiology, Kidney Diseases epidemiology
- Abstract
Introduction: High blood pressure (HBP) is a risk factor for chronic diseases. Worldwide, 20-25% of adults have hypertension, with 70% of them living in developing countries. Hypertensive renal disease (HRD) is a complication of insufficiently controlled hypertension. This study aims to analyze the behavior of HRD mortality in Mexico between 1998 and 2009., Methods: Longitudinal study with secondary analysis of HRD records from the databases provided by INEGI, which analyzes the specific rates by age and sex and standardized mortality ratio (SMR) by states and regions. Georeferencing methods are used statewide., Results: In Mexico from 1998 to 2009 there were 48,823 deaths from HRD. The standardized mortality rate rose from 3.35/100,000 inhabitants to 6.74 (p < 0.01). The specific rates by age and sex showed an increase in incidence after 50 years of age. States with higher SMR by HDR were DF, Estado de Mexico, Morelos, Jalisco, and Colima., Conclusions: HRD is a major microvascular complication of hypertension and its prevalence is increasing. We should strengthen the processes of early detection, care, and appropriate follow-up of people with hypertension to control this potentially preventable complication.
- Published
- 2013
74. Association between maternal prenatal vitamin use and congenital abnormalities of the genitourinary tract in a developing country.
- Author
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Fernández N, Henao-Mejía J, Monterrey P, Pérez J, and Zarante I
- Subjects
- Adult, Colombia epidemiology, Female, Follow-Up Studies, Gestational Age, Humans, Incidence, Infant, Newborn, Male, Pregnancy, Pregnancy Complications, Prenatal Diagnosis, Retrospective Studies, Risk Factors, Urogenital Abnormalities diagnosis, Developing Countries, Dietary Supplements, Prenatal Care methods, Urogenital Abnormalities epidemiology, Urogenital Abnormalities prevention & control, Vitamins administration & dosage
- Abstract
Objective: To determine the association between prenatal multivitamin supplementation and congenital genitourinary tract anomalies in a group of Colombian newborn babies included in the Latin-American surveillance program (ECLAMC)., Study Design: We included all neonates born between January 2004 and August 2007 registered in the ECLAMC database. Maternal prenatal multivitamin use was assessed for 122 newborns with congenital genitourinary tract anomalies and then compared to 271 non-malformed controls., Results: 46,850 births were registered and 122 (26/10,000) of them were identified to have a genitourinary tract anomaly. Prenatal multivitamin supplementation during the first, second, and third trimesters of pregnancy was associated with a reduction in the risk of these anomalies: OR 0.16 (0.08-0.31), OR 0.31 (0.19-0.52), and OR 0.38 (0.23-0.63) respectively., Conclusions: Maternal prenatal multivitamins may reduce the risk of congenital genitourinary tract anomalies, not only during the first 8 weeks of gestation but also later in pregnancy, in developing countries., (Copyright © 2011 Journal of Pediatric Urology Company. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2012
- Full Text
- View/download PDF
75. [Cutis verticis gyrata].
- Author
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Hurtado PM and Pachajoa H
- Subjects
- Adult, Humans, Male, Intellectual Disability diagnosis, Scalp Dermatoses diagnosis, Thyroid Diseases diagnosis
- Published
- 2012
76. Odontogenic cell culture in PEGDA hydrogel scaffolds for use in tooth regeneration protocols.
- Author
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Jaramillo L, Briceño I, and Durán C
- Subjects
- Animals, Cell Culture Techniques, Female, Male, Rats, Odontogenesis, Polyethylene Glycols, Regeneration, Tissue Scaffolds, Tooth physiology
- Abstract
In order to obtain a tooth-like structure, embryonic oral ectoderm cells (EOE) and bone marrow-derived stem cells (BMSC) were stratified within a synthetic hydrogel matrix (PEGDA) and implanted in the ileal mesentery of adult male Lewis rats. Whole-mount in situ hybridization was used to evaluate the expression of Pitx2, Shh and Wnt10a signals indicative of tooth initiation. In rats, expression of the three markers was present in the oral ectoderm starting at embryonic stage E12.5. which was therefore selected for cell harvesting. Embryos were obtained by controlled service of young female Lewis rats in which estrus was detected by impedance reading. At E12.5, pregnant rats were humanely euthanized and embryos were collected. The mandibular segment of the first branchial arch was dissected and the mesenchyme separated from the ectoderm by enzymatic digestion with pancreatin trypsin solution. BMSCs were collected by flushing the marrow of tibiae and femurs of adult Lewis rats with alpha-MEM and cultured in alpha-MEM in 25 cm2 flasks. Second passage BMSC's were recombined with competent oral ectoderm (E12.5-E13) stratifying them within a 3D PEGDA scaffold polymerized by exposure to UV (365 nm) inside a pyramidal polypropylene mold. Constructs were incubated from 24 to 48 hrs in alpha-MEM and then implanted for four to six weeks in the mesentery of adult male (3-6 month old) Lewis rats. 76 constructs were implanted (37 experimental, 27 negative controls and 12 positive controls). Upon maturation, constructs were harvested, fixed in buffered formalin, processed and stained with hematoxylin eosin (HE). Histological evaluation of the experimental and negative constructs showed that BMSCs underwent an apoptotic process due to lack of matrix interactions, known as anoikis, and were thus incapable of interacting with the competent ectoderm. In contrast, embryonic oral ectoderm was able to proliferate during the mesenteric implantation. In conclusion, PEGDA scaffolds are incompatible with BMSCs, therefore it is essential to continue the search for an ideal scaffold that allows proper tissue interactions.
- Published
- 2012
77. Ultra-Sensitive C-Reactive Protein (US-CRP) in Patients With Periodontal Disease and Risk of Acute Myocardial Infarction.
- Author
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Uriza CL, Arregoces FE, Porras JV, Camargo MB, and Morales AR
- Abstract
Background: The purpose of this study was to determine if the US-CRP values associated with periodontal disease are risk markers for Acute Myocardial Infarction (AMI) and to determine if the US-CRP levels associated with recent AMI are higher in patients with Periodontal disease., Methods: In order to meet the goal of the study, a case control study design was conducted. The analysis sample consisted of 401 adults (30 - 75 years old), living in Bogota D.C., Colombia, from the Hospital Universitario San Ignacio, the Faculty of Dentistry at the Pontificia Universidad Javeriana, and the Fundacion Cardio Infantil. Patients with current infections, antibiotic use in the last 3 months, periodontal treatment at least six months before the baseline of this study, mouth ulcerations caused by any type of prosthesis, candidiasis, stomatitis, or less than 7 teeth in mouth were excluded. Periodontal examination for the case group and the control group was conducted by three previously calibrated examiners. Periodontal disease was diagnosed by the presence of bleeding on probing and attachment loss. The Chronic Periodontitis diagnosis was confirmed with these clinical signs, according to the 1999 Armitage classification. The assessment of the US-CRP was performed using the IMMULITE method containing one monoclonal and one polyclonal anti-CRP antibody. This method provides a measurement range of 0.1 - 500 mg/L. Statistical analysis of variables was performed with OR and confidence intervals. A multivariate analysis was performed to determine the association between the US-CRP increase, periodontal disease and acute myocardial infarction, adjusting for smoking and other confounding factors identified in the analysis., Results: The study population was constituted by 401 patients, 56.1% (225) males, with a mean age of 52.6. When groups were compared it was observed that, in those patients with AMI and chronic severe or moderate periodontitis, 24.2% had HDL-C values lower than 40 mg/dl, 78.8% had LDL-C values higher than 100 mg/dl, 55.2% had triglycerides over 150 mg/dl, and US-CRP over 2 mg/L in 53.3%., Conclusions: Periodontal disease (moderate, severe, and chronic periodontal disease) may increase the risk of Acute Myocardial Infarction (AMI) by increasing the US-CRP levels.
- Published
- 2011
- Full Text
- View/download PDF
78. Immunoglobulin A, G and M levels in saliva in children between 3 - 12 years of age, healthy and with gingivitis.
- Author
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Romero MR, Lozano ML, Posada C, Rueda PA, Roa NS, and Rodríguez A
- Subjects
- Child, Child, Preschool, Cross-Sectional Studies, Female, Humans, Male, Gingivitis immunology, Immunoglobulin A analysis, Immunoglobulin G analysis, Immunoglobulin M analysis, Saliva chemistry
- Abstract
Unlabelled: The aim of this study was to measure the level of immunoglobulin A, G and M in saliva of 3- to 12-year-old children, both healthy and diagnosed with gingivitis., Methods: A sample of 177 children was selected, of whom 24 were healthy and 153 were diagnosed with gingivitis according to Loe 's index. Samples of saliva were taken and the ELISA test was applied to obtain the immunoglobulin concentrations expressed in microg/ml. A relationship was established between the immunoglobulin levels, the disease (gingival index) and Loe 's bacterial plaque index. IgG levels were higher in healthy children. In the group with gingivitis, 95.8% of the children had incipient gingivitis with a low average index of bacterial plaque (1.33). A direct correlation was found between age and gingival index, while an inverse correlation was found between age and bacterial plaque index. The analysis of the behavior of immunoglobulin according to age showed that age was only significantly correlated to IgA levels. The analysis comparing immunoglobulin levels and clinical parameters for gingivitis showed a direct correlation between gingival index and lgM The gingival index was found that to increase with the age of the subject, even though bacterial plaque decreases. It was also found that age is a better predictor of lgA level than gingival index and bacterial plaque index are; and that gingival index is a better predictor of lgM level than age and bacterial plaque index are.
- Published
- 2011
79. Performance of insole in reducing plantar pressure on diabetic patients in the early stages of the disease.
- Author
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Zequera ML and Solomonidis S
- Subjects
- Adult, Biomechanical Phenomena, Computer Simulation, Diabetes Complications diagnosis, Diabetes Complications therapy, Diabetes Mellitus metabolism, Equipment Design, Female, Germany, Humans, Male, Middle Aged, Orthopedics methods, Software, Ulcer, Diabetic Foot therapy, Orthotic Devices
- Abstract
It has been well documented that subjects with peripheral neuropathy resulting from diabetes mellitus are at high risk of developing foot ulceration. Decreased sensation, in combination with high underfoot pressures, have been identified as prime etiology factors in the cause of plantar naturopathic ulceration [1]. This study presents the effect of four orthotic treatment techniques in reducing metatarsal head, heel and toes pressure during walking. A pressure measurement study was carried out on a diabetic patients group wearing four insoles, including the insole designed by the computer model proposed in this project. The aim of this study was to evaluate the effect on plantar pressure in diverse insoles prescribed and manufactured with various techniques on a random group of patients with diabetes mellitus in the early stages of the disease. Four types of insoles were designed and manufactured by methods available in the market; the computer model proposed on this project was used in order to design and manufacture the insole. The results show that every patient requires an individual assessment and often a personalized insole.
- Published
- 2010
- Full Text
- View/download PDF
80. [Perceived norms among university students about their peers and drug use in Bogota, Colombia].
- Author
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Medina Matallana LS, Cunningham J, Strike C, Brands B, and Wright Mda G
- Subjects
- Adolescent, Colombia, Cross-Sectional Studies, Female, Humans, Male, Universities, Urban Health, Young Adult, Peer Group, Students, Substance-Related Disorders epidemiology
- Abstract
Unlabelled: The objective of this study was to estimate the difference between perceived norms for drug use among university students and their peers, with ages between 18 and 24 years, and attending education and health courses. This cross-sectional study was based on a survey and an anonymous self-administered questionnaire., Results: in total, 365 students participated. The rates for drug use over the last year were as follows: 43.6% for tobacco; 96.2% for alcohol; 8.2% for marijuana; and 2.2% for cocaine. The perceived norm for drug use over the last year was 78.9% for tobacco, 88.3% for alcohol, 35.4% for marijuana and 20.9% for cocaine. The consumption of alcoholic beverages and the perceived norm were very close, but it was overestimated for tobacco use. Regarding access to drugs being easy or very easy on campus, access to cigarettes and cocaine was underestimated, while marijuana was overestimated., Conclusions: university students overestimate the use of tobacco, marijuana and cocaine by their peers and have a correct perception of alcohol use. Tobacco is the substance with the most overestimated use.
- Published
- 2009
81. [Prevalence of congenital heart disease in 44,985 newborns in Colombia].
- Author
-
Baltaxe E and Zarante I
- Subjects
- Case-Control Studies, Colombia epidemiology, Female, Humans, Infant, Newborn, Male, Prevalence, Prospective Studies, Heart Defects, Congenital epidemiology
- Abstract
Objective: To estimate the prevalence of congenital heart defects in Colombia using the methodology of the Latin-American Collaborative Study of Congenital Malformations (ECLAMC, for its initials in Spanish) and to make an epidemiological description of the study population., Material and Methods: A prospective case-control study nested to a hospital-based cohort included 44,985 infants born from June 1, 2001 to April 30, 2005 in 11 Colombian hospitals., Results: Fifty-five cases were reported (1.2 per 1,000); 36 (65.5%) corresponded to severe defects and 18 (32.7%) had associated extracardiac malformations. The following risk factors were identified: maternal age > or = 40 years, paternal age > or = 30 years, gestational age < or = 37 weeks, birth weight < or = 3,000 g and > or = 3 pregnancies., Conclusions: This study shows a similar prevalence of congenital heart disease to that found in Spain, Mexico, and South America. Risk factors identified emphasize the need for public health policies in a developing country undergoing an epidemiological transition.
- Published
- 2006
82. DNA microsatellite characterization of the jaguar (Panthera onca) in Colombia.
- Author
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Ruiz-Garcia M, Payán E, Murillo A, and Alvarez D
- Subjects
- Animals, Colombia, Evolution, Molecular, Gene Flow, Gene Frequency, Genetic Heterogeneity, Genetic Variation, Likelihood Functions, Models, Genetic, Population Density, Recombination, Genetic, Microsatellite Repeats, Panthera genetics
- Abstract
The Colombian jaguar population is thought to contain two different subspecies, Panthera onca centralis and Panthera onca onca. The genetic structure of this population was evaluated using 12 microsatellite loci (n = 62 samples). In addition, 22 jaguar DNA samples from Guatemala, Paraguay, Perú, Bolivia, Venezuela and Brazil were analyzed for these microsatellite loci (n = 84 samples). The results of this study indicate six primary themes. First, the levels of gene diversity were very high. Second, the majority of the loci analyzed showed an absence of Hardy-Weinberg equilibrium, probably due to the Wahlund effect (= population subdivision). Third, several microsatellite loci showed significant heterogeneity between the two supposed subspecies in the country. Nevertheless, gene flow was present between them, and heterogeneity was relatively low, although the assignment analyses showed good classification of the jaguars studied into their respective subspecies. Fourth, the long-term historical effective population sizes were calculated through a maximum likelihood procedure for single and multi-step mutation models. Fifth, seven out of twelve DNA microsatellites studied significantly deviated from a single-step mutation model. However, the overall mean multi-step mutation percentage for these 12 DNA microsatellites was only 6%. Therefore, 94% of mutations were uni-step. Sixth, no bottleneck events were detected in the Colombian jaguar population overall.
- Published
- 2006
- Full Text
- View/download PDF
83. Usher syndrome: results of a screening program in Colombia.
- Author
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Tamayo ML, Bernal JE, Tamayo GE, Frias JL, Alvira G, Vergara O, Rodriguez V, Uribe JI, and Silva JC
- Subjects
- Colombia epidemiology, Consanguinity, Female, Hearing Loss, Sensorineural diagnosis, Hearing Loss, Sensorineural epidemiology, Humans, Male, Pedigree, Prevalence, Retinitis Pigmentosa diagnosis, Retinitis Pigmentosa epidemiology, Syndrome, Hearing Loss, Sensorineural genetics, Mass Screening methods, Retinitis Pigmentosa genetics
- Abstract
Otological, ophthalmological and genetic studies were performed in 46 patients with Usher syndrome, identified through a screening program in Colombia. Of them, 69.6% had Usher syndrome type I, 26.1% type II, and 4.3% type III. Thirty-three patients showed profound deafness (71.7%), while 13 (28.3%) had moderate to severe hearing loss. The ophthalmologic manifestations showed marked variability. Although the majority of the patients had serious ocular impairment before age 20, 32.6% had good central visual acuity. The prevalence of Usher syndrome in Colombia, estimated at 3.2/100,000, warrants the implementation of screening programs in schools for the deaf and for the blind. Our study confirms that Usher syndrome shows no geographic or racial variation and that the disorder has a wide variability of expression and genetic heterogeneity. The large size of the families we have detected may provide important opportunities for further genetic studies, particularly in terms of the assignment of the locus and gene mapping.
- Published
- 1991
- Full Text
- View/download PDF
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