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Chenoweth L, Burley C, Cook J, Cheah SL, Reyes P, Maiden G, McGuire J, McCade D, Brodaty H, Sukhapure M, Harrison F, Williams A. Improving Healthcare Quality and Clinical Outcomes for Persons with Dementia in the Sub-Acute Hospital Through Person-Centered Care Practice. J Alzheimers Dis 2024; 98:619-628. [PMID: 38427481 DOI: 10.3233/jad-231056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
Background Person-centered care is considered beneficial for persons with dementia. Objective To evaluate the impact of a person-centered knowledge translation intervention on the quality of healthcare and outcomes for persons with dementia. Methods Over nine months, sub-acute hospital nursing, allied health, and medical staff (n = 90) participated in online and/or face-to-face person-centered education and were supported by senior nursing, allied health, and medical staff champions (n = 8) to implement person-centered healthcare. The quality of healthcare service, ward climate and care delivery were evaluated pre/post study intervention. In the week following hospital admission (Time 1) and week of discharge (Time 3), agitation incidence (co-primary outcome) was assessed in participants with dementia (n = 80). Participant delirium (co-primary outcome), accidents/injuries, psychotropic medicines, length of stay, readmission and discharge destination (secondary outcomes) were compared with a retrospective group (n = 77) matched on demographics, cognition and function in activities of daily living. Results Improvements occurred post-intervention in service quality by 17.5% (p = 0.369, phi = 0.08), ward climate by 18.1% (p = 0.291, phi = 0.08), and care quality by 50% (p = 0.000, phi = 0.37). Participant agitation did not change from Time 1 to Time 3 (p = 0.223). Relative to the retrospective group, significant reductions occurred in participant delirium (p = 0.000, phi = 0.73), incidents/injuries (p = 0.000, phi = 0.99), psychotropic medicine use (p = 0.030, phi = 0.09), and hospital readmissions within 30 days (p = 0.002, phi = 0.25), but not in discharge to home (p = 0.171). Conclusions When person-centered healthcare knowledge is translated through staff education and practice support, persons with dementia can experience improved healthcare services and clinical outcomes, while healthcare services can benefit through reductions in unplanned service use.
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Affiliation(s)
- Lynn Chenoweth
- Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry, UNSW Medicine and Health, UNSW, Sydney, Australia
| | - Claire Burley
- Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry, UNSW Medicine and Health, UNSW, Sydney, Australia
| | - Jacquelene Cook
- Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry, UNSW Medicine and Health, UNSW, Sydney, Australia
- Department of Aged Health, Chronic Care and Rehabilitation, Concord Hospital, Sydney, Australia
| | - Seong-Leang Cheah
- Research Unit, Justice Health and Forensic Mental Health Network, AGSM (G27), UNSW, Sydney, Australia
| | - Patricia Reyes
- War Memorial Hospital, St Vincent's Hospital Health Network, Sydney, Australia
- Discipline of Medicine, UNSW Medicine and Health, UNSW, Sydney, Australia
| | - Genevieve Maiden
- War Memorial Hospital, St Vincent's Hospital Health Network, Sydney, Australia
| | - Jane McGuire
- War Memorial Hospital, St Vincent's Hospital Health Network, Sydney, Australia
| | - Donna McCade
- War Memorial Hospital, St Vincent's Hospital Health Network, Sydney, Australia
| | - Henry Brodaty
- Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry, UNSW Medicine and Health, UNSW, Sydney, Australia
| | - Mayouri Sukhapure
- Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry, UNSW Medicine and Health, UNSW, Sydney, Australia
| | - Fleur Harrison
- Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry, UNSW Medicine and Health, UNSW, Sydney, Australia
| | - Anna Williams
- School of Nursing and Midwifery, Western Sydney University, NSW, Penrith, Australia
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Chenoweth L, Williams A, McGuire J, Reyes P, Maiden G, Brodaty H, Liu Z, Cook J, McCade D, Taylor-Rubin C, Freeman M, Burley C. Evaluating Implementation and Outcomes of a Person-Centered Care Model for People with Dementia in the Rehabilitation In-Patient Setting: Project Protocol. J Alzheimers Dis 2023; 91:1409-1421. [PMID: 36641672 DOI: 10.3233/jad-220882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND While Australian guidelines promote person-centered healthcare (PCC) for persons with dementia, healthcare systems, routines, rules, and workplace cultures can pose challenges in the provision of PCC. OBJECTIVE To present a knowledge translation protocol of the PCC model in a sub-acute rehabilitation hospital. METHODS The two-year pre/post/follow-up translation project will include (n = 80) persons with dementia, (n = 80) adult family/carers of patient participants, (n = 60) healthcare staff (medical, nursing, allied health), and (n = 8) PCC staff champions. Champions will complete six half-days' training in PCC. Medical, nursing, and allied health staff will be provided with PCC learning manuals, complete six hours of online PCC education and attend six face-to-face PCC education sessions. Champions will provide ongoing support to staff in PCC practice. The Reach, Effectiveness, Adoption, Implementation, and Maintenance (RE-AIM) framework will be used to evaluate: i) outcomes for prospective patients provided with PCC, compared with a matched sample of retrospective patients (primary outcomes agitation incidence and severity); 2) champion and staff PCC knowledge, confidence, engagement, and practice quality; 3) person, family/carer, champion, and staff satisfaction with PCC; 4) PCC costs and benefits; and 5) organizational structures, systems and policies required to implement and maintain PCC in sub-acute healthcare. RESULTS We will identify if PCC benefits persons with dementia, staff, and healthcare services, and we will generate evidence on the educational and organizational resources required to embed PCC in practice. CONCLUSION Project findings will inform tailored PCC education applications for dissemination in healthcare and produce evidence-based PCC practice guidelines to improve healthcare for persons with dementia.
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Affiliation(s)
- Lynn Chenoweth
- Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry, UNSW Medicine and Health, UNSW, Sydney, NSW, Australia
| | - Anna Williams
- School of Nursing and Midwifery, Parramatta South Campus, Western Sydney University, Penrith, NSW, Australia
| | - Jane McGuire
- War Memorial Hospital, Uniting, South Eastern Sydney Local Health District (SESLHD), Waverley, NSW, Australia
| | - Patricia Reyes
- War Memorial Hospital, Uniting, South Eastern Sydney Local Health District (SESLHD), Waverley, NSW, Australia
| | - Genevieve Maiden
- War Memorial Hospital, Uniting, South Eastern Sydney Local Health District (SESLHD), Waverley, NSW, Australia
| | - Henry Brodaty
- Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry, UNSW Medicine and Health, UNSW, Sydney, NSW, Australia
| | - Zhixin Liu
- Health direct Australia, Haymarket, NSW, Australia
| | - Jacquelene Cook
- UNSW Medicine and Health, Department of Aged Health, Chronic Care and Rehabilitation Concord Hospital, Sydney Local Health District, Concord, NSW, Australia
| | - Donna McCade
- War Memorial Hospital, Uniting, South Eastern Sydney Local Health District (SESLHD), Waverley, NSW, Australia
| | - Cathleen Taylor-Rubin
- War Memorial Hospital, Uniting, South Eastern Sydney Local Health District (SESLHD), Waverley, NSW, Australia
| | - Matilda Freeman
- War Memorial Hospital, Uniting, South Eastern Sydney Local Health District (SESLHD), Waverley, NSW, Australia
| | - Claire Burley
- Centre for Healthy Brain Ageing (CHeBA), Discipline of Psychiatry, UNSW Medicine and Health, UNSW, Sydney, NSW, Australia
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Castro ALL, Camacho-Moreno G, Montañez-Ayala A, Varón-Vega F, Alvarez-Rodríguez JC, Valderrama-Beltrán S, Ariza BE, Pancha O, Santana AY, Flórez NS, Reyes P, Ruiz J, Beltran C, Prieto E, Rojas M, Urrego-Reyes J, Parellada CI. Invasive Pneumococcal Disease Characterization in Adults and Subgroups aged < 60 years and ≥ 60 years in Bogota, Colombia. IJID Regions 2022; 3:293-299. [PMID: 35774639 PMCID: PMC9231666 DOI: 10.1016/j.ijregi.2022.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/18/2022] [Accepted: 04/22/2022] [Indexed: 11/02/2022]
Abstract
The clinical burden of IPD is high in the elderly and adults with comorbidities IPD placed a high burden on healthcare resources in the adult population The most common types causing IPD in adults were similar to those found in children Policy makers should consider pneumococcal vaccination for populations at risk
Background Methods Results Conclusions
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Elias L, Maiden G, Manger J, Reyes P. Teaming up for more comprehensive care: case study of the Geriatric flying squad and emergency responders (Ambulance, Police, Fire and Rescue). JICA 2021. [DOI: 10.1108/jica-05-2021-0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PurposeThe purpose of this paper is to describe the development, implementation and initial evaluation of the Geriatric Flying Squad's reciprocal referral pathways with emergency responders including New South Wales Ambulance, Police and Fire and Rescue. These innovative pathways and model of care were developed to improve access to multidisciplinary services for vulnerable community dwelling frail older people with the intent of improving health and quality of life outcomes by providing an alternative to hospital admission.Design/methodology/approachThis is a case study describing the review of the Geriatric Flying Squad's referral database and quality improvement initiative to streamline referrals amongst the various emergency responders in the local health district. The implementation and initial evaluation of the project through online survey are further described.FindingsSustainable cross-sector collaboration can be achieved through building reciprocal pathways between an existing rapid response geriatric outreach service and emergency responders including Ambulance, Police, Fire and Rescue. Historically, emergency services would have transferred this group to the emergency department. These pathways exemplify person-centred care, underpinned by a multidisciplinary, rapid response team, providing an alternative referral pathway for first responders, with the aim of improving whole of health outcomes for frail older people.Practical implicationsEnablers of these pathways include a single point of contact for agencies, extended hours to support referral pathways, education to increase capacity and awareness, comprehensive and timely comprehensive assessment and ongoing case management where required and contemporaneous cross-sector collaboration to meet the medical and psychosocial needs of the client.Originality/valueThe Geriatric Flying Squad reciprocal pathways are a unique model of care with a multi-agency approach to addressing frail older people's whole of health needs.
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Cortés JA, Montañez AM, Carreño-Gutiérrez AM, Reyes P, Gómez CH, Pescador A, Ariza B, Rosso F. Risk Factors for Mortality in Colombian Patients with Candidemia. J Fungi (Basel) 2021; 7:jof7060442. [PMID: 34073125 PMCID: PMC8229794 DOI: 10.3390/jof7060442] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 12/30/2022] Open
Abstract
The aim of the study was to describe the microbiology and susceptibility profile of candidemia and to identify the risk factors associated with mortality in Colombia. A cohort of patients was followed for 30 days during 2008 to 2010. Microbiological identification and susceptibility assessments were performed in a reference centre. Demographic, clinical and treatment variables were evaluated for their associations with mortality. A parametric survival regression analysis was used to identify the risk factors associated with mortality. A total of 109 patients with candidemia in four hospitals in Colombia were identified, with a median age of 30 years old. C. parapsilosis was the most frequently identified microorganism (38.5%); the susceptibility of all isolates was high to fluconazole and anidulafungin, except for C. glabrata isolates. The overall mortality was 35.7%, and the risk factors associated with mortality included lack of antifungal treatment (HR 5.5, 95% CI 3.6–11.4), cancer (HR 3.9, 95% CI 2.3–8.0), diabetes (HR 2.5, 95% CI 1.03–6.4), and age (HR 1.13 per every 10 years, 95% CI 1.02–1.24). Catheter removal was associated with a low mortality rate (HR 0.06, 95% CI 0.00–0.49). Prompt antifungal treatment, better glycemic control and catheter removal should be prioritized in the management of candidemia.
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Affiliation(s)
- Jorge Alberto Cortés
- Department of Internal Medicine, Facultad de Medicina, Hospital Universitario Nacional, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (A.M.M.); (A.M.C.-G.)
- Correspondence: ; Tel.: +57-315-3514013
| | - Anita María Montañez
- Department of Internal Medicine, Facultad de Medicina, Hospital Universitario Nacional, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (A.M.M.); (A.M.C.-G.)
| | - Ana María Carreño-Gutiérrez
- Department of Internal Medicine, Facultad de Medicina, Hospital Universitario Nacional, Universidad Nacional de Colombia, Bogotá 111321, Colombia; (A.M.M.); (A.M.C.-G.)
| | - Patricia Reyes
- Department of Infectious Diseases, Clínica Universitaria Colombia, Bogotá 111321, Colombia;
| | | | - Angela Pescador
- Hospital Militar Central, Bogotá 111321, Colombia; (C.H.G.); (A.P.)
| | - Beatriz Ariza
- Hospital Universitario San Ignacio, Bogotá 111321, Colombia;
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Ghisi GLDM, Grace SL, Anchique CV, Gordillo X, Fernandez R, Quesada D, Arrieta Loaiciga B, Reyes P, Chaparro E, Soca Meza R, Fernandez Coronado J, Heredia Ñahui M, Palomino Vilchez R, Oh P. Translation and evaluation of a comprehensive educational program for cardiac rehabilitation patients in Latin America: A multi-national, longitudinal study. Patient Educ Couns 2021; 104:1140-1148. [PMID: 33097358 PMCID: PMC7550271 DOI: 10.1016/j.pec.2020.10.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 10/04/2020] [Accepted: 10/05/2020] [Indexed: 05/23/2023]
Abstract
OBJECTIVES To translate, cross-culturally adapt and validate a comprehensive evidence- and theoretically-based CR education intervention in Latin America. METHODS First, best practices in translation and cross-cultural adaptation were applied through 6 steps. Then, the Spanish version was delivered to CR participants from programs in Colombia, Costa Rica and Peru for validation, such that the evaluation was pre-post, uncontrolled, pragmatic, observational, and prospective in design. Participants completed surveys assessing knowledge, health literacy, self-efficacy, and health behaviours. All outcomes were assessed pre-, and post-CR, as well as 6 months after CR completion. RESULTS After translation of the patient guide from English to Spanish, 5 of the 9 booklets were culturally adapted. Two-hundred and forty-nine patients consented to participate, of which 184 (74 %) completed post-CR, and 121 (48 %) completed final assessments. There was a significant improvement in disease-related knowledge pre- to post-CR, as well as in health literacy, self-efficacy, and health behaviours (all p < 0.05). These gains were sustained 6 months post-program. With adjustment, CR attendance (i.e., exposure to the education) was associated with greater post-CR knowledge (ß = 0.026; p = 0.01). CONCLUSION A patient education intervention for CR patients in Latin America has been validated, and wider implementation is warranted. PRACTICE IMPLICATIONS Application of this first-ever validated CR education program for Spanish-speaking settings may result in secondary prevention.
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Affiliation(s)
- Gabriela Lima de Melo Ghisi
- Cardiovascular Prevention and Rehabilitation Program, Toronto Rehabilitation Institute, University Health Network, Toronto, Canada.
| | - Sherry L Grace
- Cardiovascular Prevention and Rehabilitation Program, Toronto Rehabilitation Institute, University Health Network, Toronto, Canada; School of Kinesiology and Health Science, York University, Toronto, Canada
| | | | - Ximena Gordillo
- National Cardiovascular Institute Carlos Alberto Peschiera Carrillo, Lima, Peru
| | - Rosalía Fernandez
- National Cardiovascular Institute Carlos Alberto Peschiera Carrillo, Lima, Peru
| | | | | | | | | | - Renzo Soca Meza
- National Cardiovascular Institute Carlos Alberto Peschiera Carrillo, Lima, Peru
| | | | - Marco Heredia Ñahui
- National Cardiovascular Institute Carlos Alberto Peschiera Carrillo, Lima, Peru
| | | | - Paul Oh
- Cardiovascular Prevention and Rehabilitation Program, Toronto Rehabilitation Institute, University Health Network, Toronto, Canada
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Ghisi GLDM, Fernandez R, Quesada D, Anchique CV, Gordillo X, Loaiciga BA, Reyes P, Oh P. Translation, adaptation, and psychometrically validation of an instrument to assess disease-related knowledge in Spanish-speaking cardiac rehabilitation participants: The Spanish CADE-Q SV. Heart Lung 2020; 50:129-135. [PMID: 32800390 DOI: 10.1016/j.hrtlng.2020.07.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/27/2020] [Accepted: 07/29/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To validate the Spanish Coronary Artery Disease Education Questionnaire Short Version(CADE-QSV). BACKGROUND Knowledge assessment can tailor patient education strategies in CR. METHODS Ten CR experts culturally-adapted the translated tool and 249 CR patients in three countries participated in the psychometrically validation. The internal consistency was assessed using KR-20 and Cronbach's alpha. Distribution- and anchor-based methods were used to estimate the MCID for interpretability analysis. Factor structure, acceptability, floor and ceiling effects and discriminant validity were also assessed. RESULTS KR-20 was 0.75.Factor analysis revealed 5 factors, all internally consistent. Discriminant validity was supported by significant differences in educational level and family income at post-CR. Results showed that increases in knowledge can moderately increase mean steps per day, with MCID=3.00. Items were completed by 98% of participants. No evidence for ceiling/floor effects on total score. The area with the highest knowledge was nutrition and the lowest was medical condition. CONCLUSION The Spanish CADE-QSV demonstrated preliminary validity and reliability.
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Affiliation(s)
- Gabriela Lima de Melo Ghisi
- Cardiovascular Prevention and Rehabilitation Program, Toronto Rehabilitation Institute, University Health Network, 347 Rumsey Road, Toronto M4G 1R7, Ontario, Canada.
| | - Rosalía Fernandez
- National Cardiovascular Institute Carlos Alberto Peschiera Carrillo, Lima, Peru
| | | | | | - Ximena Gordillo
- National Cardiovascular Institute Carlos Alberto Peschiera Carrillo, Lima, Peru
| | | | | | - Paul Oh
- Cardiovascular Prevention and Rehabilitation Program, Toronto Rehabilitation Institute, University Health Network, 347 Rumsey Road, Toronto M4G 1R7, Ontario, Canada
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Angel A, Reyes P, Gubler U, Monsen K, Hazard L, Goodey N. Development of a Rapid, DNA‐Based Field Test for Detection of Ranavirus, an Emerging Amphibian Disease. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.635.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Contreras‐Hernández E, Chávez D, Hernández E, Velázquez E, Reyes P, Béjar J, Martín M, Cortés U, Glusman S, Rudomin P. Supraspinal modulation of neuronal synchronization by nociceptive stimulation induces an enduring reorganization of dorsal horn neuronal connectivity. J Physiol 2018; 596:1747-1776. [PMID: 29451306 PMCID: PMC5924834 DOI: 10.1113/jp275228] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 02/12/2018] [Indexed: 12/21/2022] Open
Abstract
KEY POINTS The state of central sensitization induced by the intradermic injection of capsaicin leads to structured (non-random) changes in functional connectivity between dorsal horn neuronal populations distributed along the spinal lumbar segments in anaesthetized cats. The capsaicin-induced changes in neuronal connectivity and the concurrent increase in secondary hyperalgesia are transiently reversed by the systemic administration of small doses of lidocaine, a clinically effective procedure to treat neuropathic pain. The effects of both capsaicin and lidocaine are greatly attenuated in spinalized preparations, showing that supraspinal influences play a significant role in the shaping of nociceptive-induced changes in dorsal horn functional neuronal connectivity. We conclude that changes in functional connectivity between segmental populations of dorsal horn neurones induced by capsaicin and lidocaine result from a cooperative adaptive interaction between supraspinal and spinal neuronal networks, a process that may have a relevant role in the pathogenesis of chronic pain and analgesia. ABSTRACT Despite a profusion of information on the molecular and cellular mechanisms involved in the central sensitization produced by intense nociceptive stimulation, the changes in the patterns of functional connectivity between spinal neurones associated with the development of secondary hyperalgesia and allodynia remain largely unknown. Here we show that the state of central sensitization produced by the intradermal injection of capsaicin is associated with structured transformations in neuronal synchronization that lead to an enduring reorganization of the functional connectivity within a segmentally distributed ensemble of dorsal horn neurones. These changes are transiently reversed by the systemic administration of small doses of lidocaine, a clinically effective procedure to treat neuropathic pain. Lidocaine also reduces the capsaicin-induced facilitation of the spinal responses evoked by weak mechanical stimulation of the skin in the region of secondary but not primary hyperalgesia. The effects of both intradermic capsaicin and systemic lidocaine on the segmental correlation and coherence between ongoing cord dorsum potentials and on the responses evoked by tactile stimulation in the region of secondary hyperalgesia are greatly attenuated in spinalized preparations, showing that supraspinal influences are involved in the reorganization of the nociceptive-induced structured patterns of dorsal horn neuronal connectivity. We conclude that the structured reorganization of the functional connectivity between the dorsal horn neurones induced by capsaicin nociceptive stimulation results from cooperative interactions between supraspinal and spinal networks, a process that may have a relevant role in the shaping of the spinal state in the pathogenesis of chronic pain and analgesia.
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Affiliation(s)
- E. Contreras‐Hernández
- Department of PhysiologyCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalMéxico
| | - D. Chávez
- Department of PhysiologyCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalMéxico
| | - E. Hernández
- Department of PhysiologyCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalMéxico
| | - E. Velázquez
- Department of PhysiologyCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalMéxico
| | - P. Reyes
- Department of PhysiologyCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalMéxico
| | - J. Béjar
- Universidad Politécnica de CatalunyaBarcelonaTechCataloniaSpain
| | - M. Martín
- Universidad Politécnica de CatalunyaBarcelonaTechCataloniaSpain
| | - U. Cortés
- Universidad Politécnica de CatalunyaBarcelonaTechCataloniaSpain
- Barcelona Supercomputing CenterCataloniaSpain
| | - S. Glusman
- Department of PhysiologyCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalMéxico
- Stroger Cook County HospitalChicagoIllinoisUSA
| | - P. Rudomin
- Department of PhysiologyCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalMéxico
- El Colegio NacionalMéxico
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Duarte JC, Reyes P, Bermúdez D, Alzate JP, Maldonado JD, Cortés JA. Bacteriuria is not associated with surgical site infection in patients undergoing cardiovascular surgery. Am J Infect Control 2018; 46:180-185. [PMID: 28947210 DOI: 10.1016/j.ajic.2017.08.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/14/2017] [Accepted: 08/14/2017] [Indexed: 12/31/2022]
Abstract
BACKGROUND Despite absence of evidence, in practice, asymptomatic bacteriuria is perceived as a risk factor for surgical site infection (SSI) among patients with cardiac surgery. We aimed to identify whether an association exists between the preoperative presence of asymptomatic bacteriuria or urinary tract infection and SSI in patients undergoing cardiovascular surgery. METHODS This is an analytical study with a retrospective cohort of patients undergoing coronary revascularization or valve replacement surgery. We identified cases of bacteriuria, urinary tract infection, and cardiovascular SSI and adjusted the results according to exposure to antibiotics and known risk factors for SSI using a multivariate logistic regression analysis. RESULTS A total of 840 patients were included in the study, of whom 33 (3.9%) had asymptomatic bacteriuria and 13 (1.5%) had urinary tract infections. The incidence of SSI was 9.5% (80 patients), with 2.3% of cases having mediastinitis. In the multivariate analysis, asymptomatic bacteriuria (relative risk, 0.83; 95% confidence interval, 0.26-2.56; P = .74) and urinary tract infection (relative risk, 2.54; 95% confidence interval, 0.60-10.69; P = .20) were not risk factors for SSI. Traditional risk factors were found to increase the risk of SSI. CONCLUSIONS The presence of bacteriuria is not a risk factor for presenting SSI in cardiovascular surgery. Screening with urinalysis or urine culture would not be recommended for patients undergoing cardiac surgery.
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Affiliation(s)
- Juan Carlos Duarte
- Department of Internal Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Patricia Reyes
- Department of Infectious Disease Surveillance and Control, Clínica Universitaria Colombia, Bogotá, Colombia
| | - Diana Bermúdez
- Department of Infectious Disease Surveillance and Control, Clínica Universitaria Colombia, Bogotá, Colombia
| | - Juan Pablo Alzate
- Institute of Clinical Research, Universidad Nacional de Colombia, Bogotá, Colombia
| | | | - Jorge Alberto Cortés
- Department of Internal Medicine, Universidad Nacional de Colombia, Bogotá, Colombia; Infectious Diseases Research Group, Universidad Nacional de Colombia, Bogotá, Colombia.
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Barreto RE, Narváez J, Sepúlveda NA, Velásquez FC, Díaz SC, López MC, Reyes P, Moncada LI. Combination of five diagnostic tests to estimate the prevalence of hookworm infection among school-aged children from a rural area of colombia. Acta Trop 2017; 173:160-170. [PMID: 28619671 DOI: 10.1016/j.actatropica.2017.05.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 05/06/2017] [Accepted: 05/26/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND Public health programs for the control of soil-transmitted helminthiases require valid diagnostic tests for surveillance and parasitic control evaluation. However, there is currently no agreement about what test should be used as a gold standard for the diagnosis of hookworm infection. Still, in presence of concurrent data for multiple tests it is possible to use statistical models to estimate measures of test performance and prevalence. The aim of this study was to estimate the diagnostic accuracy of five parallel tests (direct microscopic examination, Kato-Katz, Harada-Mori, modified Ritchie-Frick, and culture in agar plate) to detect hookworm infections in a sample of school-aged children from a rural area in Colombia. METHODS AND RESULTS We used both, a frequentist approach, and Bayesian latent class models to estimate the sensitivity and specificity of five tests for hookworm detection, and to estimate the prevalence of hookworm infection in absence of a Gold Standard. The Kato-Katz and agar plate methods had an overall agreement of 95% and kappa coefficient of 0.76. Different models estimated a sensitivity between 76% and 92% for the agar plate technique, and 52% to 87% for the Kato-Katz technique. The other tests had lower sensitivity. All tests had specificity between 95% and 98%. The prevalence estimated by the Kato-Katz and Agar plate methods for different subpopulations varied between 10% and 14%, and was consistent with the prevalence estimated from the combination of all tests. The Harada-Mori, Ritchie-Frick and direct examination techniques resulted in lower and disparate prevalence estimates. Bayesian approaches assuming imperfect specificity resulted in lower prevalence estimates than the frequentist approach.
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Santamaría García H, Reyes P, Santacruz-Escudero J, Matallana D, Ibañez A. First Neuropsychiatric Symptoms and Neurocognitive Correlates of Behavioral Variant Frontotemporal Dementia. Eur Psychiatry 2017. [DOI: 10.1016/j.eurpsy.2017.01.1129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
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. We analyzed the neurocognitive correlates of patients with bvFTD who debuted with apathy or disinhibition as first symptom of disease. We evaluated the neuropsychological, clinical and neuroanatomical (3 T 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. 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. 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.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Sánchez A, Munoz M, Gómez N, Tabares J, Segura L, Salazar Á, Restrepo C, Ruíz M, Reyes P, Qian Y, Xiao L, López MC, Ramírez JD. Molecular Epidemiology of Giardia, Blastocystis and Cryptosporidium among Indigenous Children from the Colombian Amazon Basin. Front Microbiol 2017; 8:248. [PMID: 28270802 PMCID: PMC5318379 DOI: 10.3389/fmicb.2017.00248] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 02/06/2017] [Indexed: 11/13/2022] Open
Abstract
The incidence and prevalence of intestinal parasites in children is most likely due to lack of natural or acquired resistance and differences in behavior and habits closely related to environmental and socioeconomic determinants. The most important protozoa that parasitize humans are Giardia, Entamoeba, Blastocystis, and Cryptosporidium. These parasites present wide intraspecific genetic diversity and subsequently classified into assemblages and subtypes. The Amazon basin is the largest in the world and is the fifth freshwater reserve on the planet. Contradictorily, people living in these areas (Indigenous populations) have poor quality of life, which favors the infection of diseases of fecal-oral transmission. The aim of this work was to unravel the molecular epidemiology of Giardia, Blastocystis and Cryptosporidium across four communities (Puerto Nariño, San Juan del Soco, Villa Andrea and Nuevo Paraíso). We obtained 284 fecal samples from children under 15 years old that were analyzed by direct microscopy (261 samples) and Real Time PCR (qPCR) (284 samples). The positive samples for these protozoa were further characterized by several molecular markers to depict assemblages and subtypes. We observed a frequency of Giardia infection by microscopy of 23.7% (62 samples) and by qPCR of 64.8% (184 samples); for Blastocystis by microscopy of 35.2% (92 samples) and by qPCR of 88.7% (252 samples) and for Cryptosporidium only 1.9% (5 samples) were positive by microscopy and qPCR 1.8% (5 samples). Regarding the Giardia assemblages, using the glutamate dehydrogenase (gdh) marker we observed AI, BIII and BIV assemblages and when using triose phosphate isomerase (tpi) we observed assemblages AI, AII, BIII and BIV. In contrast, Blastocystis STs detected were 1, 2, 3, 4, and 6. Lastly, the species C. viatorum, C. hominis (with the subtypes IdA19 and IaA12R8) and C. parvum (with the subtype IIcA5G3c) were identified. We observed a high profile of zoonotic transmission regarding the Giardia assemblages and Blastocystis STs/alleles. Also, we highlight the elevated frequency of infection by these two protozoans suggesting an active transmission in the area. Our findings reinforces the need to deploy better epidemiological surveillance systems for enteric pathogens in the area.
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Affiliation(s)
- Angie Sánchez
- Facultad de Medicina, Departamento de Salud Pública, Universidad Nacional de ColombiaBogotá, Colombia; Grupo de Investigaciones Microbiológicas-UR, Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del RosarioBogotá, Colombia
| | - Marina Munoz
- Grupo de Investigaciones Microbiológicas-UR, Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario Bogotá, Colombia
| | - Natalia Gómez
- Facultad de Medicina, Departamento de Salud Pública, Universidad Nacional de Colombia Bogotá, Colombia
| | - Juan Tabares
- Facultad de Medicina, Departamento de Salud Pública, Universidad Nacional de Colombia Bogotá, Colombia
| | - Laura Segura
- Facultad de Medicina, Departamento de Salud Pública, Universidad Nacional de Colombia Bogotá, Colombia
| | - Ángela Salazar
- Facultad de Medicina, Departamento de Salud Pública, Universidad Nacional de Colombia Bogotá, Colombia
| | - Cristian Restrepo
- Facultad de Medicina, Departamento de Salud Pública, Universidad Nacional de Colombia Bogotá, Colombia
| | - Miguel Ruíz
- Facultad de Medicina, Departamento de Salud Pública, Universidad Nacional de Colombia Bogotá, Colombia
| | - Patricia Reyes
- Facultad de Medicina, Departamento de Salud Pública, Universidad Nacional de Colombia Bogotá, Colombia
| | - Yuchen Qian
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention Atlanta, GA, USA
| | - Lihua Xiao
- Division of Foodborne, Waterborne, and Environmental Diseases, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention Atlanta, GA, USA
| | - Myriam C López
- Facultad de Medicina, Departamento de Salud Pública, Universidad Nacional de Colombia Bogotá, Colombia
| | - Juan D Ramírez
- Grupo de Investigaciones Microbiológicas-UR, Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario Bogotá, Colombia
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Sanchez J, Illnait J, Mas R, Mendoza S, Fernandez L, Mesa M, Vega H, Fernandez J, Reyes P, Ruiz D. [Long-term effect of policosanol on the functional recovery of non-cardioembolic ischemic stroke patients: a one year study]. Rev Neurol 2017; 64:153-161. [PMID: 28169410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
INTRODUCTION Stroke is a leading cause of mortality and disability. Policosanol has been effective in brain ischemia models. The aim of this study is to investigate whether policosanol, added to aspirin therapy within 30 days of stroke onset, is better than placebo + aspirine for the long-term recovery of non-cardioembolic ischemic stroke subjects. PATIENTS AND METHODS Randomized, double-blind, placebo-controlled study. Eighty patients (mean age: 69 years) within 30 days of onset, with a modified Rankin Scale score (mRS) 2 to 4, were included. They were randomized in two groups (policosanol + aspirine or placebo + aspirine) for 12 months. RESULTS Policosanol + aspirine decreased significantly mean mRS from the first interim check-up (1.5 months). The treatment even improved after long-term therapy. More policosanol + aspirin (87.5%) than placebo + aspirine (0%) patients achieved mRSs <= 1. Policosanol + aspirine increased significantly Barthel Index, lowered LDL-cholesterol and increased HDL-cholesterol versus placebo + aspirin. CONCLUSIONS Long-term (12 months) administration of policosanol + aspirin given after suffering non-cardioembolic ischemic stroke was shown to be better than placebo + aspirin in improving functional outcomes when used among patients with non-cardioembolic ischemic stroke of moderate severity.
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Affiliation(s)
- J Sanchez
- (CNIC) Centro Nacional de Investigaciones Cientificas, La Habana, Cuba
| | - J Illnait
- (CNIC) Centro Nacional de Investigaciones Cientificas, La Habana, Cuba
| | - R Mas
- (CNIC) Centro Nacional de Investigaciones Cientificas, La Habana, Cuba
| | - S Mendoza
- (CNIC) Centro Nacional de Investigaciones Cientificas, La Habana, Cuba
| | - L Fernandez
- (CNIC) Centro Nacional de Investigaciones Cientificas, La Habana, Cuba
| | - M Mesa
- (CNIC) Centro Nacional de Investigaciones Cientificas, La Habana, Cuba
| | - H Vega
- (CNIC) Centro Nacional de Investigaciones Cientificas, La Habana, Cuba
| | - J Fernandez
- (CNIC) Centro Nacional de Investigaciones Cientificas, La Habana, Cuba
| | - P Reyes
- (CNIC) Centro Nacional de Investigaciones Cientificas, La Habana, Cuba
| | - D Ruiz
- (CNIC) Centro Nacional de Investigaciones Cientificas, La Habana, Cuba
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Reyes P, Cortes J, Bermudez D, Duarte J. Neither Bacteriuria nor Urinary Tract Infection Increase the Risk of Surgical Site Infection in Cardiac Surgery. Open Forum Infect Dis 2016. [DOI: 10.1093/ofid/ofw172.1170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
| | - Jorge Cortes
- Medicine, Universidad Nacional de Colombia, Bogota, Colombia
| | | | - Juan Duarte
- Universidad Nacional de Colombia, Bogota, Colombia
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Ramírez JD, Sánchez A, Hernández C, Flórez C, Bernal MC, Giraldo JC, Reyes P, López MC, García L, Cooper PJ, Vicuña Y, Mongi F, Casero RD. Geographic distribution of human Blastocystis subtypes in South America. Infect Genet Evol 2016; 41:32-35. [PMID: 27034056 DOI: 10.1016/j.meegid.2016.03.017] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 03/16/2016] [Accepted: 03/17/2016] [Indexed: 11/25/2022]
Abstract
Blastocystis is a cosmopolitan enteric protist colonizing probably more than 1 billion people. This protozoan exhibits genetic diversity and is subdivided into subtypes (STs). The aim of this study was to determine the distribution of Blastocystis STs in symptomatic and asymptomatic human samples from different countries of South America. A total of 346 fecal samples were genotyped by SSU rDNA showing ST1 (28.3%), ST2 (22.2%), ST3 (36.7%), ST4 (2%), ST5 (2.3%), ST6 (2%), ST7 (2.3%), ST8 (0.6%), ST12 (0.9%) and a novel ST (2.7%). These findings update the epidemiology of Blastocystis in South America and expand our knowledge of the phylogeographic differences exhibited by this stramenopile.
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Affiliation(s)
- Juan David Ramírez
- Grupo de Investigaciones Microbiológicas, UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia.
| | - Angie Sánchez
- Grupo de Investigaciones Microbiológicas, UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Carolina Hernández
- Grupo de Investigaciones Microbiológicas, UR (GIMUR), Programa de Biología, Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Carolina Flórez
- Grupo de Parasitología, Instituto Nacional de Salud, Bogotá, Colombia
| | - María Consuelo Bernal
- Programa Profesional de Biología, Grupo de Investigación en Parasitología y Microbiología Tropical, GIPAMT, Universidad Incca de Colombia, Bogotá, Colombia
| | - Julio Cesar Giraldo
- Programa Profesional de Biología, Grupo de Investigación en Parasitología y Microbiología Tropical, GIPAMT, Universidad Incca de Colombia, Bogotá, Colombia
| | - Patricia Reyes
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Myriam Consuelo López
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Lineth García
- Instituto de Investigaciones Biomédicas, Facultad de Medicina, Universidad Mayor de San Simón, Cochabamba, Bolivia
| | - Philip J Cooper
- Laboratorio de Investigaciones FEPIS, Quininde, Esmeraldas Province, Ecuador; Facultad de Ciencias Médicas, de la Salud y la Vida, Universidad Internacional del Ecuador, Quito, Ecuador
| | - Yosselin Vicuña
- Laboratorio de Investigaciones FEPIS, Quininde, Esmeraldas Province, Ecuador
| | - Florencia Mongi
- Departamento de Parasitología del Hospital Nacional de Clínicas, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Rodolfo D Casero
- Departamento de Parasitología del Hospital Nacional de Clínicas, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
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Cortes JA, Perdomo D, Morales RA, Alvarez CA, Cuervo SI, Leal AL, Gómez JC, Reyes P, Pinilla AE, Castellanos E, Donoso W. Guía de práctica clínica sobre diagnóstico y tratamiento de infección de vías urinarias no complicada en mujeres adquirida en la comunidad. Rev Fac Med 2015. [DOI: 10.15446/revfacmed.v63.n4.44185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
<p class="p1"><span class="s1">Mediante un proceso de adaptación de guías de práctica clínica se seleccionaron y evaluaron guías de infección de vías urinarias en mujeres premenopáusicas no embarazadas; se identificaron 3 de alta calidad. Con base en las evidencias y las recomendaciones aportadas por estas guías, se realizó un consenso para realizar recomendaciones para personal de salud —médicos, personal de laboratorio y enfermeros— sobre el diagnóstico de las infecciones urinarias —cistitis y pielonefritis—, sus tratamientos y prevención de la recurrencia.</span></p>
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López MC, León CM, Fonseca J, Reyes P, Moncada L, Olivera MJ, Ramírez JD. Molecular Epidemiology of Entamoeba: First Description of Entamoeba moshkovskii in a Rural Area from Central Colombia. PLoS One 2015; 10:e0140302. [PMID: 26465744 PMCID: PMC4605823 DOI: 10.1371/journal.pone.0140302] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 09/23/2015] [Indexed: 12/02/2022] Open
Abstract
Background Entamoeba histolytica, E. dispar and E. moshkovskii are the most frequent species described in human infection where E. histolytica is the only true pathogen. The epidemiology of this infection is complex due to the absence of a routine exam that allows a correct discrimination of the Entamoeba species complex. Therefore, molecular methods appear as the unique epidemiological tool to accomplish the species discrimination. Herein, we conducted a cross-sectional study to determine the frequency of Entamoeba species infections in a group of asymptomatic individuals from a rural area in central Colombia. Methodology/Principal Findings A total of 181 fecal samples from asymptomatic children under 16 years old from the hamlet La Vírgen, Cundinamarca (Colombia) that voluntarily accepted to participate in the study were collected. The fecal samples were examined by light microscopy and DNA-extracted, subsequently submitted to molecular discrimination of E. dispar/E. histolytica/E. moshkovskii infection based on a multiplex PCR assay targeting the 18S rRNA fragment. To confirm the species description, twenty samples were randomly submitted to DNA sequencing of the aforementioned fragment. By direct microscopic examination, frequency of the complex E. histolytica/E. dispar/E. moshkovskii was 18.8% (34/181). PCR showed a frequency of 49.1% (89/181), discriminated as 23.2% (42/181) that were positive for E. dispar, 25.4% (46/181) for E. moshkovskii and 0.55% (1/ 181) for E. histolytica. Also, mixed infections were detected between E. dispar and E. moshkovskii at 4.42% (8/181) of the samples. Molecular barcoding confirmed the diagnosis depicted by the multiplex PCR assay. Conclusions/Significance This is the first description of E. moshkovskii in Colombia and the second report in South-America to our knowledge. Our results suggest the need to unravel the true epidemiology of Entamoeba infections around the world, including the real pathogenic role that E. moshkovskii may have.
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Affiliation(s)
- Myriam Consuelo López
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Cielo M. León
- Grupo de Investigaciones Microbiológicas–UR (GIMUR), Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Jairo Fonseca
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Patricia Reyes
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Ligia Moncada
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Mario J. Olivera
- Grupo de Investigaciones Microbiológicas–UR (GIMUR), Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Juan David Ramírez
- Grupo de Investigaciones Microbiológicas–UR (GIMUR), Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
- * E-mail:
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Reyes P, Uriza F, Santamaria H, Rueda A, Ibañez A, Matallana D. Multimodal neuroimaging analysis (tractography, volumetry and functional) in a series of tbi patients with neuropsychiatric sequelae. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Rivera-Lam M, Oporto S, Reyes P. Susac's syndrome as a differential diagnosis of demyelinating diseases. Report of two cases and literature review. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Dongil A, Rivera-Cárcamo C, Pastor-Pérez L, Sepúlveda-Escribano A, Reyes P. Ir supported over carbon materials for the selective hydrogenation of chloronitrobenzenes. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.10.034] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Alfredo Fernández-Niño J, David Ramírez J, Consuelo López M, Inés Moncada L, Reyes P, Darío Heredia R. Agreement of the Kato-Katz test established by the WHO with samples fixed with sodium acetate analyzed at 6 months to diagnose intestinal geohelminthes. Acta Trop 2015; 146:42-4. [PMID: 25771113 DOI: 10.1016/j.actatropica.2015.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 03/03/2015] [Accepted: 03/04/2015] [Indexed: 11/17/2022]
Abstract
The aim of this study was to evaluate the performance of the Kato-Katz test (WHO version) with stool samples from a rural area, fixed with sodium acetate (SAF). The Kato-Katz test was used to compare unfixed samples (conventional test) with the same samples containing SAF fixative at time 0 and at 6 months. The study included stools from 154 subjects. A marginally statistically significant decrease in prevalence was estimated only for hookworm, when comparing unfixed samples versus the SAF fixed samples read at 6 months (p=0.06). A significant reduction in parasite load was found for hookworm (p<0.01) and Trichuris trichiura (p<0.01) between the unfixed and the fixed sample read at 6 months, but not for Ascaris lumbricoides (p=0.10). This research suggests that the SAF fixative solution is a good option for transporting samples for diagnosis, especially in rural areas in developing countries.
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Affiliation(s)
- Julián Alfredo Fernández-Niño
- Centro de Información para Decisiones en Salud Pública (CENIDSP), Instituto Nacional de Salud Pública, Cuernavaca (Morelos), Mexico; Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia.
| | - Juan David Ramírez
- Grupo de Investigaciones Microbiológicas - UR (GIMUR), Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Myriam Consuelo López
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Ligia Inés Moncada
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Patricia Reyes
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Rubén Darío Heredia
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
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Ramírez JD, Heredia RD, Hernández C, León CM, Moncada LI, Reyes P, Pinilla AE, Lopez MC. Molecular diagnosis and genotype analysis of Giardia duodenalis in asymptomatic children from a rural area in central Colombia. Infect Genet Evol 2015; 32:208-13. [PMID: 25795384 DOI: 10.1016/j.meegid.2015.03.015] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 03/09/2015] [Accepted: 03/12/2015] [Indexed: 11/18/2022]
Abstract
Giardiasis is a parasitic infection that affects around 200 million people worldwide. This parasite presents a remarkable genetic variability observed in 8 genetic clusters named as 'assemblages' (A-H). These assemblages are host restricted and could be zoonotic where A and B infect humans and animals around the globe. The knowledge of the molecular epidemiology of human giardiasis in South-America is scarce and also the usefulness of PCR to detect this pathogen in fecal samples remains controversial. The aim of this study was to conduct a cross-sectional study to compare the molecular targets employed for the molecular diagnosis of Giardia DNA and to discriminate the parasite assemblages circulating in the studied population. We analyzed 181 fecal samples from Children at La Virgen, Cundinamarca, Colombia that were DNA-extracted and analyzed by SSU rDNA, tpi and gdh loci. We observed positivity by microscopy of 13% and by PCR around 76-80% depending on the molecular marker. Additionally, a lack of statistical concordance between microscopy and PCR was detected. Regarding the genetic assemblages, we detected assemblage A (3%), assemblage B (90%) and mixed infections assemblages A+B (7%). Hence, the sub-assemblages were typed as AI, AII, BIII and BIV across the population. This study represents a reliable attempt to understand the molecular epidemiology of giardiasis in Colombia and the use of PCR to detect cryptic infections. The epidemiological implications are herein discussed.
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Affiliation(s)
- Juan David Ramírez
- Grupo de Investigaciones Microbiológicas - UR (GIMUR), Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia.
| | - Rubén Darío Heredia
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Carolina Hernández
- Grupo de Investigaciones Microbiológicas - UR (GIMUR), Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Cielo M León
- Grupo de Investigaciones Microbiológicas - UR (GIMUR), Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - Ligia Inés Moncada
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Patricia Reyes
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
| | | | - Myriam Consuelo Lopez
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
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Torre-Carbot KDL, Chávez-Servín JL, Reyes P, Ferriz RA, Gutiérrez E, Escobar K, Aguilera A, Anaya MA, García-Gasca T, García OP, Rosado JL. Changes in Lipid Profile of Wistar Rats after Sustained Consumption of Different Types of Commercial Vegetable Oil: A Preliminary Study. ACTA ACUST UNITED AC 2015. [DOI: 10.13189/ujfns.2015.030102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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López MC, Moncada LI, Ariza-Araújo Y, Fernández-Niño JA, Reyes P, Nicholls RS. [Evaluation (assessment) of three tests for diagnosis of geohelmints in Colombia]. Biomedica 2014; 33:128-36. [PMID: 23715316 DOI: 10.1590/s0120-41572013000100016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 01/25/2012] [Accepted: 08/25/2012] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Soil-transmitted helminth infections are considered a public health problem in developing countries. The diagnostic tests, both for individual parient diagnosis as for population studies should be evaluated in terms of validity and reliability. OBJECTIVE To compare the direct examination, the modified Ritchie-Frick method, a Kato-Katz designed by a Brazilian group and one designed by the WHO, for the diagnosis of soil-transmitted helminthes. MATERIALS AND METHODS A diagnostic test reliability study was performed. The same stool sample was analyzed by the same observer using four diagnostic tests. 204 samples were obtained, 194 of those fulfilled the inclusion criteria and were analyzed. The observers did not know the participants' identity neither the other tests results. For the analysis the Kato-Katz (WHO) was considered as the gold standard. For the reliability assessment percent agreement, positive percent agreement, Kappa statistic, and intraclass correlation were performed. RESULTS The Brazilian Kato-Katz showed a good performance with high sensitivity and specificity for T. trichiura and Hookworm with values of 0.97 and 0.96 respectively, and a high specificity with mild sensitivity for A. lumbricoides (0.95 and 0.79) meanwhile the direct examination and the Ritche-Frick method showed a performance between mild and poor. The differences were higher for hookworm and Trichiuris trichiura than for Ascaris lumbricoides. CONCLUSION The Brazilian Kato Katz test could be implemented, but further studies are needed to correlate its operative capacity with its feasibility, availability and cost.
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Affiliation(s)
- Myriam Consuelo López
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, D.C., Colombia.
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Garijo D, Garrido M, Grima C, Márquez A, Moreno-González A, Portillo J, Reyes P, Robles R, Valenzuela J. Monochromatic geometric k-factors for bicolored point sets with auxiliary points. INFORM PROCESS LETT 2014. [DOI: 10.1016/j.ipl.2013.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Azuar C, Reyes P, Slachevsky A, Volle E, Kinkingnehun S, Kouneiher F, Bravo E, Dubois B, Koechlin E, Levy R. Testing the model of caudo-rostral organization of cognitive control in the human with frontal lesions. Neuroimage 2014; 84:1053-60. [DOI: 10.1016/j.neuroimage.2013.09.031] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 09/05/2013] [Accepted: 09/13/2013] [Indexed: 11/25/2022] Open
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Knudson A, Ariza Y, López MC, Fajardo OS, Reyes P, Moncada LI, Duque S, Álvarez CA, Nicholls RS. [The effect of ivermectin on geohelminth frequency (i.e. as used in the onchocerciasis control program in Colombia)]. Rev Salud Publica (Bogota) 2012; 14:681-694. [PMID: 23912520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/14/2011] [Accepted: 07/04/2012] [Indexed: 06/02/2023]
Abstract
OBJECTIVE Evaluating the effect of ivermectin on soil-transmitted helminthes (STH) infection frequency in a Colombian population included in the Onchocerciasis Elimination Program for the Americas (OEPA). METHODS This was an impact evaluation study which adopted a longitudinal approach using the population of Naicioná (1996) as baseline for comparison to people from the same population as controls (2008). The cross-sectional approach involved comparing the reference population of Naicioná (2008) to the population of Dos Quebradas (2008) used as controls. Fecal samples were processed by a modified Ritchie-Frick method. RESULTS Ascaris lumbricoides was the most frequently found parasite in Naicioná (60/121; 49.6 %: 37.8-63.895%CI) and in Dos Quebradas (36/76; 47.4 %: 33.2-65.6 95 % CI). Ivermectin's main effect on the population aged over 5 years was a decreased risk of Trichiuris trichiura infection in both longitudinal assessment (86 % reduction: 74-93 95 % CI) and cross-sectional assessment (63 %:24-82 95 % CI). A 93 % reduction (45-99 95 % CI) in Strongyloides stercoralis frequency was found in longitudinal assessment, compared to 85 % in cross-sectional assessment (-031-99 95 % CI). CONCLUSIONS Ivermectin use in the OEPA is not sufficient for STH morbidity control. Integrated programs including education and basic sanitation are required.
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Affiliation(s)
- Angélica Knudson
- Departamento de Microbiología, Universidad Nacional de Colombia.
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Toscos TR, Ponder SW, Anderson BJ, Davidson MB, Lee ML, Montemayor-Gonzalez E, Reyes P, Link E, McMahon KL. Integrating an Automated Diabetes Management System into the family management of children with type 1 diabetes: results from a 12-month randomized controlled technology trial. Diabetes Care 2012; 35:498-502. [PMID: 22301127 PMCID: PMC3322694 DOI: 10.2337/dc11-1597] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE The study objective was to evaluate how the use of a pervasive blood glucose monitoring (BGM) technology relates to glycemic control, report of self-care behavior, and emotional response to BGM of children with type 1 diabetes and their parents. RESEARCH DESIGN AND METHODS Forty-eight children aged less than 12 years (mean 8.8 years) with type 1 diabetes were randomly assigned to one of two study groups, a control group (conventional care without technology) or an experimental group (conventional care with technology), and followed for 12 months. Families in the experimental group were given the Automated Diabetes Management System (ADMS), which automatically collects blood glucose (BG) values and sends to parent(s) a 21-day BG trending report via e-mail each night. Measures of glycemic control (HbA(1c)) were collected at baseline and at quarterly diabetes clinic visits; BGM effect and diabetes self-care behavior measures were obtained at the baseline, 6-month, and 12-month visits. RESULTS Children in the experimental group had significantly (P = 0.01) lower HbA(1c) at 12 months (7.44 ± 0.94, -0.35 from baseline) than controls (8.31 ± 1.24, +0.15 from baseline). Improvement in HbA(1c) was more profound in families using the ADMS more frequently. In addition, in these families, parents showed a significant improvement in BGM effect (P = 0.03) and children became more meticulous in diabetes self-care (P = 0.04). Children in both experimental and control groups experienced no change in their emotional response to BGM. CONCLUSIONS Using the ADMS 1-3 times/week may help children with type 1 diabetes improve glycemic control and gain diabetes self-management skills, as well as improve the BGM effect of parents.
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Affiliation(s)
- Tammy R Toscos
- School of Health and Human Services, Indiana University-Purdue University, Fort Wayne, Indiana, USA.
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Cortés JA, Soto R, Álvarez CA, Buitrago G, Camargo RD, Cataño JC, Gómez CH, Otero E, Reyes P, Roncancio G, Vargas JG. Consenso de uso de antimicrobianos en pacientes críticamente enfermos con falla renal o en riesgo de padecerla. Infectio 2011. [DOI: 10.1016/s0123-9392(11)70076-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Valencia CA, Fernández JA, Cucunubá ZM, Reyes P, López MC, Duque S. Correlation between malaria incidence and prevalence of soil-transmitted helminths in Colombia: an ecologic evaluation. Biomedica 2010; 30:501-508. [PMID: 21713354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/31/2009] [Accepted: 06/23/2010] [Indexed: 05/31/2023]
Abstract
INTRODUCTION Recent studies have suggested an association between the soil-transmitted helminth infections and malaria incidence. However, published evidence is still insufficient and diverging. Since 1977, new ecologic studies have not been carried out to explore this association. Ecologic studies could explore this correlation on a population level, assessing its potential importance on public health. OBJECTIVES The aim of this evaluation is to explore the association between soil-transmitted helminths prevalence and malaria incidence, at an ecologic level in Colombia. MATERIALS AND METHODS Using data from the National Health Survey, which was carried out in 1980 in Colombia, we calculated Spearman correlation coefficients between the prevalence of: Ascaris lumbricoides, Trichuris trichiura and hookworm, with the 1980 malaria incidence data of the same year provided from the Colombian Malaria National Eradication Service. A robust regression analysis with least trimmed squares was performed. RESULTS Falciparum malaria incidence and Ascaris lumbricoides prevalence had a low correlation (R²= 0.086) but this correlation was stronger into the clusters of towns with prevalence of Ascaris lumbricoides infection above 30% were only included (R²= 0.916). CONCLUSION This work showed an ecologic correlation in Colombia between malaria incidence and soil-transmitted helminths prevalence. This could suggest that either there is an association between these two groups of parasites, or could be explained by the presence of common structural determinants for both diseases.
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Affiliation(s)
- Carlos Andrés Valencia
- Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, D.C, Colombia
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Extermann M, Boler I, Reich R, Lyman GH, Brown RH, DeFelice J, Levine RM, Lubiner ET, Reyes P, Schreiber FJ. The Chemotherapy Risk Assessment Scale for High-Age Patients (CRASH) score: Design and validation. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.9000] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Gaona G, Reyes P, Delgado R, Montañez A, Ferriz RA, Carmen Caamaño M, Anaya MA, García OP, Rosado JL, García T, Torre‐Carbot K. Lipids Profile After Consumption of Different Types of Vegetable Oils: A Pilot Test in Rats. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.938.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gabriela Gaona
- Nutrition SciencesUniversidad Autónoma de QuerétaroQuerétaroMexico
| | - Patricia Reyes
- Nutrition SciencesUniversidad Autónoma de QuerétaroQuerétaroMexico
| | - Rubí Delgado
- Nutrition SciencesUniversidad Autónoma de QuerétaroQuerétaroMexico
| | - Alvaro Montañez
- Facultad de MedicinaUniversidad Autónoma de AguascalientesAguascalientesMexico
| | - Roberto A Ferriz
- Nutrition SciencesUniversidad Autónoma de QuerétaroQuerétaroMexico
| | | | - Miriam A Anaya
- Nutrition SciencesUniversidad Autónoma de QuerétaroQuerétaroMexico
| | - Olga P García
- Nutrition SciencesUniversidad Autónoma de QuerétaroQuerétaroMexico
| | - Jorge L Rosado
- Nutrition SciencesUniversidad Autónoma de QuerétaroQuerétaroMexico
| | - Teresa García
- Nutrition SciencesUniversidad Autónoma de QuerétaroQuerétaroMexico
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Bastidas A, Pérez M, Piotrostanalzki A, Reyes P, Gonzáles M, Rada R. Disseminated nocardiosis. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Cortes J, Reyes P, Gomez C, Cuervo S, Rivas P, Sanchez R. Candidemia in third level hospitals in Bogotá, Colombia. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.1767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Báez S, Mendoza L, Reyes P, Matallana D, Montañés P. [Interpretation of proverbs and Alzheimer's disease]. Rev Neurol 2009; 49:566-572. [PMID: 19921620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
AIM To evaluate the performance of patients with Alzheimer's disease (AD) in the mild-moderate stage in a verbal material abstraction task that involves interpreting the implicit meaning of proverbs and sayings. SUBJECTS AND METHODS A qualitative-quantitative analysis was carried out of the performance of 30 patients with AD and 30 controls, paired by age, gender and level of education. RESULTS Patients had significantly greater difficulties than the controls when it came to interpreting proverbs. A high correlation was found between subjects' years of schooling and the overall score on the proverb interpretation test. Results suggest that the processes that may be predominantly affected in patients with AD are the investigation of the conditions of the problem, together with selecting an alternative and formulating a cognitive plan to resolve the task. CONCLUSIONS The results help to further our knowledge of the characteristics of performance of patients with AD in a test involving the interpretation of the implicit meaning of proverbs and also provide information about the processes that may be predominantly affected. Further research is needed, however, on this subject area in order to obtain more conclusive explanations.
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Affiliation(s)
- S Báez
- Universidad Nacional de Colombia, Bogota DC, Colombia.
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Escalona N, Medina C, García R, Reyes P. Fischer Tropsch reaction from a mixture similar to biosyngas. Influence of promoters on surface and catalytic properties of Co/SiO2 catalysts. Catal Today 2009. [DOI: 10.1016/j.cattod.2008.10.030] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Affiliation(s)
- A Del Cul
- INSERM, Cognitive Neuroimaging Unit, Saclay, France.
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Affiliation(s)
- D A Graham
- Department of Medicine, St. John Hospital and Medical Center, Detroit, Michigan, USA
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Reyes P, Santos R, Diaz P, Martinez A, Pasquale P, Sepulveda J. Percutaneous epididymal sperm aspiration (PESA) or testicular sperm extraction (TESE) for men with obstructive azoospermia: a review of 6 years. Fertil Steril 2008. [DOI: 10.1016/j.fertnstert.2008.07.683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fernández JA, Idrovo ÁJ, Cucunubá ZM, Reyes P. Validez de los estudios de asociación entre geohelmintos e incidencia de malaria: ¿Debería impactar las políticas de salud? Rev bras epidemiol 2008. [DOI: 10.1590/s1415-790x2008000300004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
INTRODUCCIÓN: La distribución mundial de las geohelmintiasis y la malaria se encuentra ampliamente sobrepuesta. Algunos estudios sugieren una asociación entre las infecciones por geohelmintos y la incidencia de malaria. OBJETIVOS: Identificar la evidencia epidemiológica disponible y evaluar la validez de estos estudios. METODOLOGÍA: Una revisión sistemática fue realizada en bases de datos especializadas. Los estudios identificados fueron analizados críticamente y ordenados según clasificación de la U.S. Preventive Services Task Force. Se identificaron las principales limitaciones metodológicas de cada estudio. RESULTADOS: Se encontraron seis estudios publicados sobre el tema. Solo dos estudios tienen un alto nivel de evidencia (nivel I), tres de nivel II-2, y uno de nivel III-3. Existen importantes limitaciones metodológicas para aclarar la asociación entre geohelmintos e incidencia de malaria. CONCLUSIONES: Es apresurado discutir las potenciales implicaciones en salud pública de estos hallazgos dada la escasez de estudios y la validez limitada de la evidencia existente. Futuros estudios con nuevas consideraciones metodológicas podrían mejorar el conocimiento acerca de esta asociación. Sin embargo, es más importante realizar acciones sobre los determinantes estructurales para controlar y prevenir la ocurrencia de ambas enfermedades.
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Rojas H, Borda G, Martínez J, Valencia J, Reyes P. Liquid phase hydrogenation of citral and intermediaries over Ir/TiO2/SiO2 catalysts: Kinetic study. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcata.2008.02.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pecchi G, Reyes P, Zamora R, Cadús L, Fierro J. Surface properties and performance for VOCs combustion of LaFe1−yNiyO3 perovskite oxides. J SOLID STATE CHEM 2008. [DOI: 10.1016/j.jssc.2008.01.020] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Chaves MDP, Fernández JA, Ospina I, López MC, Moncada L, Reyes P. [Giardia duodenalis prevalence and associated risk factors in preschool and school-age children of rural Colombia]. Biomedica 2007; 27:345-351. [PMID: 18320100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/20/2007] [Accepted: 04/24/2007] [Indexed: 05/26/2023]
Abstract
INTRODUCTION Giardia doudenalis infection remains an important public health problem worldwide, as well as in Colombia. This infection is associated with poverty and lack of public services. OBJECTIVE The study was designed to describe prevalence trends of Giardia duodenalis infections in preschool and school-age children from the village of La Virgen, Quipile, Cundinamarca, and its possible association with socioeconomic variables. MATERIALS AND METHODS Three cross-sectional studies were undertaken in 1995, 2001 and 2005. In each, a non-random sample was selected among children aged <1 to 15 years. Fecal samples were collected for direct examination in order to determine G. duodenalis infection and other intestinal parasites. During the 2005 survey information was collected concerning the sociodemographic and economic conditions in each family group from which a child was sampled. RESULTS The prevalence of G. duodenalis infection did not change significantly during the study period-13.6% in 1995, 12.8% in 2001 and 15.2% in 2005. These results suggested that belonging to the subsidized health care regime was associated with G. duodenalis infection (prevalence rate [PR]: 4.47; 95% confidence interval [95% CI] 0.6-32.0), not having water supply (PR 2.6; 95% CI 1.1-6.0) and involvement in agricultural activities (PR 2.5; 95% CI 1.0-6.4). CONCLUSION Giardiasis is a continuing public health problem at La Virgen. As long as the environmental and socioeconomic factors associated with infection persist, this intestinal protozoan infection will not be controlled.
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Affiliation(s)
- María del Pilar Chaves
- Unidad de Parasitología, Departamento de Salud Pública, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, D. C, Colombia
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Rich N, Reyes P, Reap L, Goswami R, Fraley GS. Sex differences in the effect of prepubertal GALP infusion on growth, metabolism and LH secretion. Physiol Behav 2007; 92:814-23. [PMID: 17632189 PMCID: PMC2692297 DOI: 10.1016/j.physbeh.2007.06.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2007] [Revised: 05/13/2007] [Accepted: 06/06/2007] [Indexed: 10/23/2022]
Abstract
The hypothalamic neuropeptide, galanin-like peptide (GALP), is known to have an effect on energy expenditure and reproduction in adult male rats, but little work has been done on prepubertal rats. We hypothesized that hypothalamic GALP is involved in physiological changes associated with the onset of puberty. To test this hypothesis, we first determined the postnatal ontogeny of GALP gene expression via in situ hybridization of developing male and female rat pups through adulthood. GALP gene expression was not observed in either male or female rat pups until after postnatal day (PND) 10 and did not reach adult-like levels until after weaning (PND25). To determine if exogenous GALP could induce the onset of puberty, PND25 male and female rats were implanted with lateral ventricular cannulas connected to an osmotic minipump that delivered either GALP or vehicle. GALP infusion significantly (p<0.05) increased body weight, food intake, and metabolic rate in male but not female rats compared to control infusion. After 2 weeks, GALP infusion had no significant effect on the onset of puberty, percent body fat, nor plasma levels of insulin, FSH or gonadal steroids in either sex; however, GALP did significantly (p<0.05) increase plasma levels of LH and leptin in male but not female rats and increased plasma growth hormone (GH) in both sexes. Our observations further demonstrate a sex difference in GALP responsiveness in prepubertal rats. These data suggest that GALP may be involved with the prepubertal increase in circulating leptin, LH, and GH resulting in an increase in metabolic rate and lean growth associated with puberty.
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Affiliation(s)
- N Rich
- Biology Department, Hope College, 35 East 12th Street, Schaap Science Center 3065, Holland, MI 49423, United States
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Karduss A, Leon E, Buitrago L, Gomez L, Jimenez J, Reyes P, Coll Y. 305: Irradiation of cellular blood components with cobalt 60 is very efficient and safe in the prevention of transfusion associated graft versus host disease (TA-GVHD) in the allogeneic transplant setting. Biol Blood Marrow Transplant 2007. [DOI: 10.1016/j.bbmt.2006.12.310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Extermann M, Boler I, Blair J, O'Neill E, Crane E, Balducci L, Brown R, Defelice J, Levine R, Lubiner E, Reyes P, Schreiber F. 9 Prevalence of multiple cancers in Floridian patients aged 70 years and older. Crit Rev Oncol Hematol 2006. [DOI: 10.1016/s1040-8428(13)70080-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Silver JM, Koumaras B, Chen M, Mirski D, Potkin SG, Reyes P, Warden D, Harvey PD, Arciniegas D, Katz DI, Gunay I. Effects of rivastigmine on cognitive function in patients with traumatic brain injury. Neurology 2006; 67:748-55. [PMID: 16966534 DOI: 10.1212/01.wnl.0000234062.98062.e9] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To compare the efficacy and safety of rivastigmine (3 to 6 mg/day) vs placebo over 12 weeks in patients with traumatic brain injury and persistent cognitive impairment. METHODS This prospective, randomized, double-blind, placebo-controlled study was conducted in 157 patients at least 12 months after injury. The primary efficacy measures were the Cambridge Neuropsychological Test Automated Battery (CANTAB) Rapid Visual Information Processing (RVIP) A' subtest and the Hopkins Verbal Learning Test (HVLT). The primary efficacy outcome was the proportion of patients who demonstrated 1.0 SD or greater improvement from baseline at week 12 on CANTAB RVIP A' or HVLT. RESULTS The percentage of responders at week 12 on either the CANTAB RVIP A' or HVLT was 48.7% for rivastigmine and 49.3% for placebo (p = 0.940). Furthermore, for the overall study population, there were no significant differences for any of the secondary efficacy variables. In a subgroup of patients with moderate to severe memory impairment (n = 81), defined as 25% impairment or greater on HVLT at baseline, rivastigmine was significantly better than placebo for a number of measures, including the proportion of HVLT responders and CANTAB RVIP mean latency. CONCLUSIONS Rivastigmine was safe and well tolerated in patients with traumatic brain injury with cognitive deficits. Rivastigmine shows promising results in the subgroup of patients with traumatic brain injury with moderate to severe memory deficits.
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Affiliation(s)
- J M Silver
- New York University School of Medicine, New York, NY, USA
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Extermann M, Boler I, O’Neill E, Brown R, Defelice J, Levine R, Lubiner E, Reyes P, Schreiber F, Lyman GH, Balducci L. Muscle weakness is a significant problem in older patients receiving chemotherapy. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.8545] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
8545 Background: Accurate prediction of toxicities from chemotherapy in the elderly could lead to improved decision making and supportive care. Methods: A large prospective multicentric cohort study of older cancer patients undergoing chemotherapy is underway to document the occurrence of chemotherapy toxicity and to develop a predictive score: the CRASH score (Chemotherapy Risk Assessment Score for High Age patients). Toxicity, including muscle weakness, is assessed using the Common Toxicity Criteria v.3.0. Results: An analysis of the first 200 patients entered in the study revealed an infrequently highlighted side effect: muscle weakness. Twenty patients were not evaluable for this analysis. Muscle weakness was reported by 22 patients. This represented 12.2% of the patients, of whom 13 (7.2%) had grade 3 muscle weakness. There was no grade 4 muscle weakness. This side effect appears to be independent from fatigue: only 4/22 patients reported concomitant severe (grade 3–4) fatigue, and among the 24 patients with severe fatigue, only 4 reported any muscle weakness. Muscle weakness occurred fairly early during the treatment: median 30 days (range 6–126 days). The muscle weakness was predominantly of two types: a generalized muscle weakness, or a weakness affecting the lower extremities. It was accompanied by falls in two patients. That weakness was present across tumor types, chemotherapy types, individual physicians, and oncology centers. Like the rest of the study population, the majority of these patients had advanced disease. Other frequent severe side effects were: grade 4 neutropenia 31.7%; grade 3–4: hypokalemia 8.8%, hyperglycemia 8.3%, hyponatremia 7.2%, febrile neutropenia 7.2%, diarrhea 7.2%, infection with neutropenia 6.7%. Conclusion: Muscle weakness is a frequent and clinically significant side effect of chemotherapy in the elderly, distinguishable from fatigue. This could be targeted by a preventive physical therapy intervention to prevent muscle deconditioning. [Table: see text]
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Affiliation(s)
- M. Extermann
- H. Lee Moffitt Cancer Center, Tampa, FL; Florida Cancer Specialists, Sarasota, FL; Powell Cancer Center, Clearwater, FL; Space Coast Medical Associates, Titusville, FL; Florida Cancer Specialists, Port Charlotte, FL; Lake Heart & Cancer Medical Center, Leesburg, FL; Center for Cancer Care and Research, Lakeland, FL; University of Rochester, Rochester, NY
| | - I. Boler
- H. Lee Moffitt Cancer Center, Tampa, FL; Florida Cancer Specialists, Sarasota, FL; Powell Cancer Center, Clearwater, FL; Space Coast Medical Associates, Titusville, FL; Florida Cancer Specialists, Port Charlotte, FL; Lake Heart & Cancer Medical Center, Leesburg, FL; Center for Cancer Care and Research, Lakeland, FL; University of Rochester, Rochester, NY
| | - E. O’Neill
- H. Lee Moffitt Cancer Center, Tampa, FL; Florida Cancer Specialists, Sarasota, FL; Powell Cancer Center, Clearwater, FL; Space Coast Medical Associates, Titusville, FL; Florida Cancer Specialists, Port Charlotte, FL; Lake Heart & Cancer Medical Center, Leesburg, FL; Center for Cancer Care and Research, Lakeland, FL; University of Rochester, Rochester, NY
| | - R. Brown
- H. Lee Moffitt Cancer Center, Tampa, FL; Florida Cancer Specialists, Sarasota, FL; Powell Cancer Center, Clearwater, FL; Space Coast Medical Associates, Titusville, FL; Florida Cancer Specialists, Port Charlotte, FL; Lake Heart & Cancer Medical Center, Leesburg, FL; Center for Cancer Care and Research, Lakeland, FL; University of Rochester, Rochester, NY
| | - J. Defelice
- H. Lee Moffitt Cancer Center, Tampa, FL; Florida Cancer Specialists, Sarasota, FL; Powell Cancer Center, Clearwater, FL; Space Coast Medical Associates, Titusville, FL; Florida Cancer Specialists, Port Charlotte, FL; Lake Heart & Cancer Medical Center, Leesburg, FL; Center for Cancer Care and Research, Lakeland, FL; University of Rochester, Rochester, NY
| | - R. Levine
- H. Lee Moffitt Cancer Center, Tampa, FL; Florida Cancer Specialists, Sarasota, FL; Powell Cancer Center, Clearwater, FL; Space Coast Medical Associates, Titusville, FL; Florida Cancer Specialists, Port Charlotte, FL; Lake Heart & Cancer Medical Center, Leesburg, FL; Center for Cancer Care and Research, Lakeland, FL; University of Rochester, Rochester, NY
| | - E. Lubiner
- H. Lee Moffitt Cancer Center, Tampa, FL; Florida Cancer Specialists, Sarasota, FL; Powell Cancer Center, Clearwater, FL; Space Coast Medical Associates, Titusville, FL; Florida Cancer Specialists, Port Charlotte, FL; Lake Heart & Cancer Medical Center, Leesburg, FL; Center for Cancer Care and Research, Lakeland, FL; University of Rochester, Rochester, NY
| | - P. Reyes
- H. Lee Moffitt Cancer Center, Tampa, FL; Florida Cancer Specialists, Sarasota, FL; Powell Cancer Center, Clearwater, FL; Space Coast Medical Associates, Titusville, FL; Florida Cancer Specialists, Port Charlotte, FL; Lake Heart & Cancer Medical Center, Leesburg, FL; Center for Cancer Care and Research, Lakeland, FL; University of Rochester, Rochester, NY
| | - F. Schreiber
- H. Lee Moffitt Cancer Center, Tampa, FL; Florida Cancer Specialists, Sarasota, FL; Powell Cancer Center, Clearwater, FL; Space Coast Medical Associates, Titusville, FL; Florida Cancer Specialists, Port Charlotte, FL; Lake Heart & Cancer Medical Center, Leesburg, FL; Center for Cancer Care and Research, Lakeland, FL; University of Rochester, Rochester, NY
| | - G. H. Lyman
- H. Lee Moffitt Cancer Center, Tampa, FL; Florida Cancer Specialists, Sarasota, FL; Powell Cancer Center, Clearwater, FL; Space Coast Medical Associates, Titusville, FL; Florida Cancer Specialists, Port Charlotte, FL; Lake Heart & Cancer Medical Center, Leesburg, FL; Center for Cancer Care and Research, Lakeland, FL; University of Rochester, Rochester, NY
| | - L. Balducci
- H. Lee Moffitt Cancer Center, Tampa, FL; Florida Cancer Specialists, Sarasota, FL; Powell Cancer Center, Clearwater, FL; Space Coast Medical Associates, Titusville, FL; Florida Cancer Specialists, Port Charlotte, FL; Lake Heart & Cancer Medical Center, Leesburg, FL; Center for Cancer Care and Research, Lakeland, FL; University of Rochester, Rochester, NY
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Reicher B, Poston R, Reyes P, Scaffidi R, Zimrin D. A novel strategy of simultaneous hybrid MID/CAB DES for multivessel CAD. Cardiovascular Revascularization Medicine 2006. [DOI: 10.1016/j.carrev.2006.03.099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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