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1.
J Interprof Care ; 38(1): 78-86, 2024 Jan 02.
Artículo en Inglés | MEDLINE | ID: mdl-37871983

RESUMEN

This study examined the experiences of patients, Occupational Therapy (OT), Physiotherapy (PT) and Medicine learners, Providers, and Faculty, in implementing a Virtual Interprofessional (VIP) education initiative in two academic Family Medicine (FM) collaborative clinics. A qualitative descriptive study drew on a strength-based approach as part of the evaluation of the interfaculty VIP initiative. Participants involved in VIP care were conveniently sampled. Interviews were conducted with four patients, and focus groups were held with a total of 16 providers, preceptors and learners in OT, PT and FM. Data were analyzed using content analysis and managed using NVivo12. Four main categories emerged: 1) Challenges in implementing VIP care in FM; 2) Operational challenges, 3) Facilitators of VIP care in FM; and 4) Experiential learning outcomes and benefits of VIP care. This innovation supported knowledge and insights on interprofessional competencies acquired during practice, provided inclusive and comprehensive access to care for patients, and identified opportunities to enhance medical, OT and PT education in VIP care in FM. A collaborative approach with faculty from different disciplines (FM, School of Health Professions: OT and PT) can provide ongoing opportunities for VIP care for patients, and foster IP learning and acquisition of competencies for FM, OT and PT learners and providers.


Asunto(s)
Relaciones Interprofesionales , Terapia Ocupacional , Humanos , Terapia Ocupacional/educación , Medicina Familiar y Comunitaria/educación , Aprendizaje Basado en Problemas , Modalidades de Fisioterapia
2.
J Cell Sci ; 131(1)2018 01 10.
Artículo en Inglés | MEDLINE | ID: mdl-29222111

RESUMEN

Vascular endothelial growth factor (VEGF), a key angiogenic and permeability factor, plays an important role in new blood vessel formation. However, abnormal VEGF-induced VEGFR2 signaling leads to hyperpermeability. We have shown previously that Rap1, best known for promoting cell adhesion and vessel stability, is a critical regulator of VEGFR2-mediated angiogenic and shear-stress EC responses. To determine the role of Rap1 role in endothelial barrier dynamics, we examined vascular permeability in EC-specific Rap1A- and Rap1B-knockout mice, cell-cell junction remodeling and EC monolayer resistivity in Rap1-deficient ECs under basal, inflammatory or elevated VEGF conditions. Deletion of either Rap1 isoform impaired de novo adherens junction (AJ) formation and recovery from LPS-induced barrier disruption in vivo However, only Rap1A deficiency increased permeability in ECs and lung vessels. Interestingly, Rap1B deficiency attenuated VEGF-induced permeability in vivo and AJ remodeling in vitro Therefore, only Rap1A is required for the maintenance of normal vascular integrity. Importantly, Rap1B is the primary isoform essential for normal VEGF-induced EC barrier dissolution. Deletion of either Rap1 isoform protected against hyper permeability in the STZ-induced diabetes model, suggesting clinical implications for targeting Rap1 in pathologies with VEGF-induced hyperpermeability.


Asunto(s)
Permeabilidad Capilar/efectos de los fármacos , Endotelio Vascular/fisiología , Factor A de Crecimiento Endotelial Vascular/farmacología , Proteínas de Unión al GTP rap/metabolismo , Animales , Adhesión Celular , Línea Celular , Diabetes Mellitus Experimental/inducido químicamente , Endotelio Vascular/efectos de los fármacos , Femenino , Humanos , Uniones Intercelulares/metabolismo , Masculino , Ratones , Ratones Noqueados , Neovascularización Fisiológica , Transducción de Señal
3.
Int J Audiol ; 56(4): 260-266, 2017 04.
Artículo en Inglés | MEDLINE | ID: mdl-27967271

RESUMEN

OBJECTIVE: Participation in the labour force with a hearing impairment presents a number of challenges. This study describes how Canadian newspapers represent workers with hearing loss. DESIGN: Taking a critical framing theory approach, thematic analysis was performed through coding relevant articles, abstracting and hierarchically categorising themes. STUDY SAMPLE: Seven English-language Canadian newspapers were searched for publications between 1995 and 2016. Twenty-six articles met our criteria: discussing paid workers with hearing loss who used English rather than sign language on the job and making reference to workers' competence. RESULTS: We identified a global theme, Focussing on a good worklife or focussing on a limited worklife, composed of three organising themes (1) Prominent individuals struggle, take action, and continue despite hearing loss, (2) Workers with hearing loss in the community create their best day themselves, and (3) Workers with hearing loss, as a generalised whole, are portrayed as either competent or limited. CONCLUSIONS: The dominant framing portrays individual workers as ingenious, determined, and successful. Negative framings were predominantly generalisations to these workers as a group. To generate more positive framings, professionals can build relationships with consumer groups and, when contacted by the media, direct journalists to interview workers with hearing loss.


Asunto(s)
Empleo/psicología , Pérdida Auditiva/psicología , Audición , Periódicos como Asunto , Ocupaciones , Personas con Deficiencia Auditiva/psicología , Opinión Pública , Canadá , Audífonos , Pérdida Auditiva/diagnóstico , Pérdida Auditiva/fisiopatología , Pérdida Auditiva/rehabilitación , Humanos , Perfil Laboral , Juicio , Personas con Deficiencia Auditiva/rehabilitación , Prejuicio , Lengua de Signos , Estigma Social , Evaluación de Capacidad de Trabajo , Lugar de Trabajo/psicología
4.
Am J Pathol ; 182(4): 1412-24, 2013 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-23395094

RESUMEN

Although anti-vascular endothelial growth factor (VEGF) treatments reduce pathological neovascularization in the eye and in tumors, the regression is often not sustainable or is incomplete. We investigated whether vascular endothelial cells circumvent anti-VEGF therapies by activating the unfolded protein response (UPR) to override the classic extracellular VEGF pathway. Exposure of endothelial cells to VEGF, high glucose, or H2O2 up-regulated the X-box binding protein-1/inositol-requiring protein-1 (IRE1) α and activating transcription factor 6 (ATF6) arms of the UPR compared with untreated cells. This was associated with increased expression in α-basic crystallin (CRYAB), which has previously bound VEGF. siRNA knockdown or pharmacological blockade of IRE1α, ATF6, or CRYAB increased intracellular VEGF degradation and decreased full-length intracellular VEGF. Inhibition of IRE1α, ATF6, or CRYAB resulted in an approximately 40% reduction of in vitro angiogenesis, which was further reduced in combination with a neutralizing antibody against extracellular VEGF. Blockade of IRE1α or ATF6 in the oxygen-induced retinopathy or choroidal neovascularization mouse models caused an approximately 35% reduction in angiogenesis. However, combination therapy of VEGF neutralizing antibody with UPR inhibitors or siRNAs reduced retinal/choroidal neovascularization by a further 25% to 40%, and this inhibition was significantly greater than either treatment alone. In conclusion, activation of the UPR sustains angiogenesis by preventing degradation of intracellular VEGF. The IRE1α/ATF6 arms of the UPR offer a potential therapeutic target in the treatment of pathological angiogenesis.


Asunto(s)
Factor de Transcripción Activador 6/metabolismo , Neovascularización Coroidal/prevención & control , Proteínas de Unión al ADN/metabolismo , Neovascularización Retiniana/prevención & control , Factores de Transcripción/metabolismo , Respuesta de Proteína Desplegada , Factor A de Crecimiento Endotelial Vascular/antagonistas & inhibidores , Animales , Bovinos , Neovascularización Coroidal/patología , Modelos Animales de Enfermedad , Estrés del Retículo Endoplásmico/efectos de los fármacos , Células Endoteliales/efectos de los fármacos , Células Endoteliales/metabolismo , Espacio Extracelular/efectos de los fármacos , Espacio Extracelular/metabolismo , Técnicas de Silenciamiento del Gen , Espacio Intracelular/efectos de los fármacos , Espacio Intracelular/metabolismo , Rayos Láser , Dosificación Letal Mediana , Ratones , Ratones Endogámicos C57BL , Microvasos/patología , Proteolisis/efectos de los fármacos , ARN Interferente Pequeño/metabolismo , Factores de Transcripción del Factor Regulador X , Retina/patología , Neovascularización Retiniana/patología , Transducción de Señal/efectos de los fármacos , Respuesta de Proteína Desplegada/efectos de los fármacos , Regulación hacia Arriba/efectos de los fármacos , Factor A de Crecimiento Endotelial Vascular/metabolismo , Factor A de Crecimiento Endotelial Vascular/farmacología , Proteína 1 de Unión a la X-Box , Cadena B de alfa-Cristalina/metabolismo
5.
J Manipulative Physiol Ther ; 37(1): 42-63, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-24262386

RESUMEN

OBJECTIVE: The purpose of this study was to develop evidence-based treatment recommendations for the treatment of nonspecific (mechanical) neck pain in adults. METHODS: Systematic literature searches of controlled clinical trials published through December 2011 relevant to chiropractic practice were conducted using the databases MEDLINE, EMBASE, EMCARE, Index to Chiropractic Literature, and the Cochrane Library. The number, quality, and consistency of findings were considered to assign an overall strength of evidence (strong, moderate, weak, or conflicting) and to formulate treatment recommendations. RESULTS: Forty-one randomized controlled trials meeting the inclusion criteria and scoring a low risk of bias were used to develop 11 treatment recommendations. Strong recommendations were made for the treatment of chronic neck pain with manipulation, manual therapy, and exercise in combination with other modalities. Strong recommendations were also made for the treatment of chronic neck pain with stretching, strengthening, and endurance exercises alone. Moderate recommendations were made for the treatment of acute neck pain with manipulation and mobilization in combination with other modalities. Moderate recommendations were made for the treatment of chronic neck pain with mobilization as well as massage in combination with other therapies. A weak recommendation was made for the treatment of acute neck pain with exercise alone and the treatment of chronic neck pain with manipulation alone. Thoracic manipulation and trigger point therapy could not be recommended for the treatment of acute neck pain. Transcutaneous nerve stimulation, thoracic manipulation, laser, and traction could not be recommended for the treatment of chronic neck pain. CONCLUSIONS: Interventions commonly used in chiropractic care improve outcomes for the treatment of acute and chronic neck pain. Increased benefit has been shown in several instances where a multimodal approach to neck pain has been used.


Asunto(s)
Manipulación Quiropráctica , Dolor de Cuello/terapia , Medicina Basada en la Evidencia , Humanos , Guías de Práctica Clínica como Asunto , Ensayos Clínicos Controlados Aleatorios como Asunto
6.
Work ; 76(3): 969-978, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37807801

RESUMEN

BACKGROUND: In 2009 the journal WORK commenced a new column for the publication of Work Transition Narratives. Fourteen persons with lived experience published their narratives on approaches that helped them through work disruptions and change. OBJECTIVE: A review of the articles was conducted to understand how people navigated challenges and obstacles and made sense of their in-transition experiences to return to work or to find new employment. METHODS: A retrospective review was conducted using a convenience sample of N = 14 published narratives. A template approach was developed using micro (individual) and macro (social, cultural, political, structural) level issues to extract and analyze descriptive content. A senior researcher and two Masters of Science students independently reviewed the narratives and extracted data. A dialogic and inductive approach was used to achieve consensus on the description of the types of mechanisms used to move forward. RESULTS: The mechanisms evident in the narratives used by people to navigate work disruptions included drawing on anchors, catalysts, champions, opportunities, learning, coming to terms, critical conversations, and critical reflections. CONCLUSION: Mechanisms used to navigate in-transition experiences add to the knowledge on negotiating the dialectical relationship of micro and macro level challenges in occupational transitions of work. This review and analysis revealed commonly used strategies that may assist others in addressing in-transition work challenges. In addition, the findings have implications for ongoing research and the development of occupational mindfulness approaches that may help people through the overwhelming and often daunting experience of work transitions.


Asunto(s)
Empleo , Narración , Humanos , Estudios Retrospectivos , Comunicación , Estudiantes
7.
Can J Occup Ther ; 90(4): 344-352, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36658768

RESUMEN

Background. There is a lack of knowledge on the scope and nature of the research by faculty members in occupational science (OS) and/or occupational therapy (OT) programs in Canada. Purpose. To describe the research activities of faculty members in these programs and directions. Method. A cross-sectional survey was distributed to 173 faculty members across all 14 Canadian OT that addressed: 1) research topics and methods, 2) populations, and 3) funding. Findings. Based on respondents (N = 121), research is focused on a range of topics and populations with most conducting qualitative research. Many conduct research examining the effectiveness of interventions, with few respondents focused on OS research. Federal and provincial grants agencies were the largest source of funding. Implications. Research topics studied were not always proportional to practice although emerging areas were being investigated that can expand the evidence base and scope of practice. Despite limited occupation-specific funding options, respondents were accessing funding from varied sources. Collaborations among faculty members, clinicians, and individuals with lived experience can create priorities for future OS and/or OT research in Canada.


Asunto(s)
Terapia Ocupacional , Humanos , Estudios Transversales , Canadá , Docentes
8.
J Biol Chem ; 286(11): 9542-54, 2011 Mar 18.
Artículo en Inglés | MEDLINE | ID: mdl-21212276

RESUMEN

Retinal vascular damages are the cardinal hallmarks of retinopathy of prematurity (ROP), a leading cause of vision impairment and blindness in childhood. Both angiogenesis and vasculogenesis are disrupted in the hyperoxia-induced vaso-obliteration phase, and recapitulated, although aberrantly, in the subsequent ischemia-induced neovessel formation phase of ROP. Yet, whereas the histopathological features of ROP are well characterized, many key modulators with a therapeutic potential remain unknown. The CCN1 protein also known as cysteine-rich protein 61 (Cyr61) is a dynamically expressed, matricellular protein required for proper angiogenesis and vasculogenesis during development. The expression of CCN1 becomes abnormally reduced during the hyperoxic and ischemic phases of ROP modeled in the mouse eye with oxygen-induced retinopathy (OIR). Lentivirus-mediated re-expression of CCN1 enhanced physiological adaptation of the retinal vasculature to hyperoxia and reduced pathological angiogenesis following ischemia. Remarkably, injection into the vitreous of OIR mice of hematopoietic stem cells (HSCs) engineered to express CCN1 harnessed ischemia-induced neovessel outgrowth without adversely affecting the physiological adaptation of retinal vessels to hyperoxia. In vitro exposure of HSCs to recombinant CCN1 induced integrin-dependent cell adhesion, migration, and expression of specific endothelial cell markers as well as many components of the Wnt signaling pathway including Wnt ligands, their receptors, inhibitors, and downstream targets. CCN1-induced Wnt signaling mediated, at least in part, adhesion and endothelial differentiation of cultured HSCs, and inhibition of Wnt signaling interfered with normalization of the retinal vasculature induced by CCN1-primed HSCs in OIR mice. These newly identified functions of CCN1 suggest its possible therapeutic utility in ischemic retinopathy.


Asunto(s)
Proteína 61 Rica en Cisteína/metabolismo , Neovascularización Patológica/metabolismo , Retina/metabolismo , Vasos Retinianos/metabolismo , Retinopatía de la Prematuridad/metabolismo , Animales , Adhesión Celular/efectos de los fármacos , Adhesión Celular/genética , Proteína 61 Rica en Cisteína/genética , Proteína 61 Rica en Cisteína/farmacología , Modelos Animales de Enfermedad , Humanos , Recién Nacido , Isquemia/tratamiento farmacológico , Isquemia/metabolismo , Isquemia/patología , Ratones , Neovascularización Patológica/tratamiento farmacológico , Neovascularización Patológica/patología , Proteínas Recombinantes/genética , Proteínas Recombinantes/metabolismo , Proteínas Recombinantes/farmacología , Retina/patología , Vasos Retinianos/patología , Retinopatía de la Prematuridad/tratamiento farmacológico , Retinopatía de la Prematuridad/genética , Retinopatía de la Prematuridad/patología , Transducción de Señal/efectos de los fármacos , Transducción de Señal/genética , Proteínas Wnt/genética , Proteínas Wnt/metabolismo
9.
Am J Pathol ; 178(4): 1517-28, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21435441

RESUMEN

This study was conducted to determine the perivascular cell responses to increased endothelial cell expression of insulin-like growth factor binding protein-3 (IGFBP-3) in mouse retina. The contribution of bone marrow cells in the IGFBP-3-mediated response was examined using green fluorescent protein-positive (GFP(+)) adult chimeric mice subjected to laser-induced retinal vessel occlusion injury. Intravitreal injection of an endothelial-specific IGFBP-3-expressing plasmid resulted in increased differentiation of GFP(+) hematopoietic stem cells (HSCs) into pericytes and astrocytes as determined by immunohistochemical analysis. Administration of IGFBP-3 plasmid to mouse pups that underwent the oxygen-induced retinopathy model resulted in increased pericyte ensheathment and reduced pericyte apoptosis in the developing retina. Increased IGFBP-3 expression reduced the number of activated microglial cells and decreased apoptosis of neuronal cells in the oxygen-induced retinopathy model. In summary, IGFBP-3 increased differentiation of GFP(+) HSCs into pericytes and astrocytes while increasing vascular ensheathment of pericytes and decreasing apoptosis of pericytes and retinal neurons. All of these cytoprotective effects exhibited by IGFBP-3 overexpression can result in a more stable retinal vascular bed. Thus, endothelial expression of IGFBP-3 may represent a physiologic response to injury and may represent a therapeutic strategy for the treatment of ischemic vascular eye diseases, such as diabetic retinopathy and retinopathy of prematurity.


Asunto(s)
Apoptosis , Proteína 3 de Unión a Factor de Crecimiento Similar a la Insulina/metabolismo , Isquemia/patología , Microglía/metabolismo , Neuronas/metabolismo , Pericitos/metabolismo , Retina/lesiones , Animales , Astrocitos/citología , Muerte Celular , Diferenciación Celular , Oftalmopatías/patología , Femenino , Proteínas Fluorescentes Verdes/metabolismo , Humanos , Masculino , Ratones , Ratones Endogámicos C57BL , Microscopía Fluorescente/métodos , Pericitos/citología , Retina/metabolismo
10.
J Pediatr Gastroenterol Nutr ; 54(4): 499-504, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22020559

RESUMEN

BACKGROUND AND OBJECTIVE: Supplementation studies of glutamine, arginine, and docosahexaenoic acid (DHA) have established the safety of each of these nutrients in neonates; however, the potential for a more stable and soluble dipeptide, arginyl-glutamine (Arg-Gln) or DHA with anti-inflammatory properties, to exert benefits on hyperoxia-induced intestinal injury has not been investigated. Arg-Gln dipeptide has been shown to prevent retinal damage in a rodent model of oxygen-induced injury. The objective of the present study was to investigate whether Arg-Gln dipeptide or DHA could also attenuate markers of injury and inflammation to the small intestine in this same model. METHODS: Seven-day-old mouse pups were placed with their dams in 75% oxygen for 5 days. After 5 days of hyperoxic exposure (P7-P12), pups were removed from hyperoxia and allowed to recover in atmospheric conditions for 5 days (P12-P17). Mouse pups received Arg-Gln (5g·kg·day) or DHA (5g·kg·day) or vehicle orally started on P12 through P17. Distal small intestine (DSI) histologic changes, myeloperoxidase (MPO), lactate dehydrogenase (LDH), inflammatory cytokines, and tissue apoptosis were evaluated. RESULTS: Hyperoxic mice showed a greater distortion of overall villus structure and with higher injury score (P<0.05). Arg-Gln dipeptide and DHA supplementation groups were more similar to the room air control group. Supplementation of Arg-Gln or DHA reduced hyperoxia-induced MPO activity (P<0.05). Supplementation of Arg-Gln or DHA returned LDH activity to the levels of control. Hyperoxia induced apoptotic cell death in DSIs, and both Arg-Gln and DHA reversed this effect (P<0.05). CONCLUSIONS: Supplementation with either Arg-Gln or DHA may limit some inflammatory and apoptotic processes involved in hyperoxic-induced intestinal injury in neonatal mice.


Asunto(s)
Arginina/administración & dosificación , Suplementos Dietéticos , Dipéptidos/farmacología , Ácidos Docosahexaenoicos/administración & dosificación , Glutamina/administración & dosificación , Hiperoxia/tratamiento farmacológico , Animales , Animales Recién Nacidos , Apoptosis/efectos de los fármacos , Modelos Animales de Enfermedad , Femenino , Hiperoxia/inducido químicamente , Mucosa Intestinal/efectos de los fármacos , Mucosa Intestinal/metabolismo , Mucosa Intestinal/patología , Intestino Delgado/efectos de los fármacos , Intestino Delgado/metabolismo , Intestino Delgado/patología , L-Lactato Deshidrogenasa/metabolismo , Ratones , Ratones Endogámicos C57BL , Peroxidasa/metabolismo
11.
J Chiropr Humanit ; 29: 1-6, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-35874302

RESUMEN

Objective: The purpose of this project was to investigate how well each member agency's standards complied with the Councils on Chiropractic Education International (CCEI) framework standards. Methods: Each of the CCEI member agencies were provided with a mapping template that was approved by all representatives. A representative from each agency independently mapped their agency's standards to the CCEI framework standards using the template document. Discrepancies were explored and discussed among members. Member agencies discussed with their constituents the omissions and areas that did not comply or adequately match the CCEI document. Changes or additions to member agency standards were made, and updated versions of the mapping were agreed by all CCEI representatives. Results: There were 12 sections containing 30 standards within the CCEI framework standards. The Council of Chiropractic Education Australasia and Council on Chiropractic Education Canada reported relevant standards for all 30 CCEI standards. The European Council on Chiropractic Education had 29 of 30 relevant standards, with no direct standard for service. The products that were created were an executive summary of our findings and a detailed map showing similarities for each of the member agencies. Conclusion: This mapping project demonstrated the similarities of the CCEI member agency standards and that these standards focused on outcomes-based chiropractic education. This quality improvement project resulted in useful dialogue among the member agencies during this project, which clarified areas of difference.

12.
Curr Diab Rep ; 11(4): 265-74, 2011 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-21611766

RESUMEN

Autologous endothelial progenitor cell (EPC) populations represent a novel treatment for therapeutic revascularization and vascular repair for diabetic patients with complications including diabetic retinopathy. Current therapies are applicable to late-stage disease and carry significant side effects, whereas cell-based therapy may provide an alternative by repairing areas of vasodegeneration and reversing ischemia. However, EPCs from diabetic patients with vascular complications are dysfunctional. Moreover, the diabetic environment poses its own challenges and complicates the use of autologous EPCs. Before EPCs become the ideal "cell therapy," the optimal EPC must be determined, any functional dysfunction must be corrected prior to use, and the diabetic milieu will require modification to accept the EPCs. This review describes the rationale for harnessing the vascular reparative properties of EPCs with emphasis on the molecular and phenotypic nature of healthy EPCs, how diabetes alters them, and novel strategies to improve dysfunctional EPCs.


Asunto(s)
Tratamiento Basado en Trasplante de Células y Tejidos/métodos , Retinopatía Diabética/terapia , Animales , Retinopatía Diabética/metabolismo , Células Madre Embrionarias/citología , Células Madre Embrionarias/fisiología , Células Endoteliales/citología , Células Endoteliales/fisiología , Humanos , Sistema Renina-Angiotensina/fisiología
13.
Circ Res ; 105(9): 897-905, 2009 Oct 23.
Artículo en Inglés | MEDLINE | ID: mdl-19762684

RESUMEN

RATIONALE: Insulin-like growth factor binding protein (IGFBP)-3 modulates vascular development by regulating endothelial progenitor cell (EPC) behavior, specifically stimulating EPC cell migration. This study was undertaken to investigate the mechanism of IGFBP-3 effects on EPC function and how IGFBP-3 mediates cytoprotection following vascular injury. OBJECTIVE: To examine the mechanism of IGFBP-3-mediated repair following vascular injury. METHODS AND RESULTS: We used 2 complementary vascular injury models: laser occlusion of retinal vessels in adult green fluorescent protein (GFP) chimeric mice and oxygen-induced retinopathy in mouse pups. Intravitreal injection of IGFBP-3-expressing plasmid into lasered GFP chimeric mice stimulated homing of EPCs, whereas reversing ischemia induced increases in macrophage infiltration. IGFBP-3 also reduced the retinal ceramide/sphingomyelin ratio that was increased following laser injury. In the OIR model, IGFBP-3 prevented cell death of resident vascular endothelial cells and EPCs, while simultaneously increasing astrocytic ensheathment of vessels. For EPCs to orchestrate repair, these cells must migrate into ischemic tissue. This migratory ability is mediated, in part, by endogenous NO generation. Thus, we asked whether the migratory effects of IGFBP-3 were attributable to stimulation of NO generation. IGFBP-3 increased endothelial NO synthase expression in human EPCs leading to NO generation. IGFBP-3 exposure also led to the redistribution of vasodilator-stimulated phosphoprotein, an NO regulated protein critical for cell migration. IGFBP-3-mediated NO generation required high-density lipoprotein receptor activation and stimulation of phosphatidylinositol 3-kinase/Akt pathway. CONCLUSION: These studies support consideration of IGFBP-3 as a novel agent to restore the function of injured vasculature and restore NO generation.


Asunto(s)
Movimiento Celular , Células Endoteliales/metabolismo , Proteína 3 de Unión a Factor de Crecimiento Similar a la Insulina/metabolismo , Óxido Nítrico/metabolismo , Neovascularización Retiniana/metabolismo , Vasos Retinianos/metabolismo , Retinopatía de la Prematuridad/metabolismo , Células Madre/metabolismo , Animales , Animales Recién Nacidos , Astrocitos/metabolismo , Moléculas de Adhesión Celular/metabolismo , Muerte Celular , Proliferación Celular , Células Cultivadas , Ceramidas/metabolismo , Arterias Cerebrales/metabolismo , Arterias Cerebrales/fisiopatología , Citoprotección , Modelos Animales de Enfermedad , Células Endoteliales/patología , Femenino , Técnicas de Transferencia de Gen , Proteínas Fluorescentes Verdes/genética , Humanos , Recién Nacido , Proteína 3 de Unión a Factor de Crecimiento Similar a la Insulina/genética , Masculino , Arterias Mesentéricas/metabolismo , Arterias Mesentéricas/fisiopatología , Ratones , Ratones Endogámicos C57BL , Ratones Transgénicos , Proteínas de Microfilamentos/metabolismo , Óxido Nítrico Sintasa de Tipo III/metabolismo , Fosfatidilinositol 3-Quinasas/metabolismo , Fosfoproteínas/metabolismo , Embarazo , Proteínas Proto-Oncogénicas c-akt/metabolismo , Ratas , Ratas Sprague-Dawley , Neovascularización Retiniana/patología , Neovascularización Retiniana/fisiopatología , Vasos Retinianos/patología , Vasos Retinianos/fisiopatología , Retinopatía de la Prematuridad/patología , Retinopatía de la Prematuridad/fisiopatología , Receptores Depuradores de Clase B/metabolismo , Transducción de Señal , Esfingomielinas/metabolismo , Células Madre/patología , Vasodilatación
14.
J Manipulative Physiol Ther ; 34(5): 274-89, 2011 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-21640251

RESUMEN

OBJECTIVE: The purpose of this manuscript is to provide evidence-informed practice recommendations for the chiropractic treatment of headache in adults. METHODS: Systematic literature searches of controlled clinical trials published through August 2009 relevant to chiropractic practice were conducted using the databases MEDLINE; EMBASE; Allied and Complementary Medicine; the Cumulative Index to Nursing and Allied Health Literature; Manual, Alternative, and Natural Therapy Index System; Alt HealthWatch; Index to Chiropractic Literature; and the Cochrane Library. The number, quality, and consistency of findings were considered to assign an overall strength of evidence (strong, moderate, limited, or conflicting) and to formulate practice recommendations. RESULTS: Twenty-one articles met inclusion criteria and were used to develop recommendations. Evidence did not exceed a moderate level. For migraine, spinal manipulation and multimodal multidisciplinary interventions including massage are recommended for management of patients with episodic or chronic migraine. For tension-type headache, spinal manipulation cannot be recommended for the management of episodic tension-type headache. A recommendation cannot be made for or against the use of spinal manipulation for patients with chronic tension-type headache. Low-load craniocervical mobilization may be beneficial for longer term management of patients with episodic or chronic tension-type headaches. For cervicogenic headache, spinal manipulation is recommended. Joint mobilization or deep neck flexor exercises may improve symptoms. There is no consistently additive benefit of combining joint mobilization and deep neck flexor exercises for patients with cervicogenic headache. Adverse events were not addressed in most clinical trials; and if they were, there were none or they were minor. CONCLUSIONS: Evidence suggests that chiropractic care, including spinal manipulation, improves migraine and cervicogenic headaches. The type, frequency, dosage, and duration of treatment(s) should be based on guideline recommendations, clinical experience, and findings. Evidence for the use of spinal manipulation as an isolated intervention for patients with tension-type headache remains equivocal.


Asunto(s)
Medicina Basada en la Evidencia , Cefalea/terapia , Manipulación Quiropráctica , Adulto , Humanos , Manipulación Quiropráctica/efectos adversos , Trastornos Migrañosos/terapia , Cefalea Postraumática/terapia , Seguridad , Cefalea de Tipo Tensional/terapia
15.
JBI Evid Synth ; 19(2): 426-431, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33109905

RESUMEN

OBJECTIVE: The objective of this review is to assess the prevalence of musculoskeletal chronic pain among active and retired members of military forces and to characterize potential factors that could influence the frequency of musculoskeletal chronic pain. INTRODUCTION: Inherent to military occupations is a diverse source of occupational hazards that affect the well-being of individuals at any stage of their military career (active and retired). Chronic pain may result from the continuous exposure to physically demanding tasks and other risks. Moreover, chronic pain has been associated with other comorbidities, including mental health conditions. INCLUSION CRITERIA: Scientific papers in French or English reporting on chronic pain derived from a musculoskeletal cause in active and retired military personnel will be considered. There will be no restriction on participants' country, age, or length of service. METHODS: The published literature will be identified by exploring biomedical, pharmacological, and physiology bibliographic databases. The unpublished literature will be located through the search of thesis and gray literature repositories. This review will follow the condition-context-population approach and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. The extracted data will include any detail about the anatomic location, diagnosis, types of studies, and risk factors. The review will follow JBI methods of critical appraisal, data extraction, and data synthesis for reviews containing prevalence data. If enough evidence is found, meta-regression analysis will performed, otherwise a narrative review will be completed. SYSTEMATIC REVIEW REGISTRATION NUMBER: PROSPERO CRD42020153704.


Asunto(s)
Dolor Crónico , Personal Militar , Dolor Musculoesquelético , Dolor Crónico/epidemiología , Humanos , Dolor Musculoesquelético/epidemiología , Prevalencia , Literatura de Revisión como Asunto , Factores de Riesgo , Revisiones Sistemáticas como Asunto
16.
Microvasc Res ; 79(3): 207-16, 2010 May.
Artículo en Inglés | MEDLINE | ID: mdl-20188747

RESUMEN

Bone-marrow-derived endothelial progenitor cells (EPCs) contribute to angiogenesis-mediated pathological neovascularization, and recent studies have begun to recognize the biological significance of this contribution. This review will discuss the ability of EPCs to contribute to neovascularization in both physiological and pathological conditions. Circulating EPCs were originally identified in 1997 by Asahara as CD34(+) VEGFR2(+) mononuclear cells. These cells differentiated into an endothelial phenotype, expressed endothelial markers, and incorporated into neovessels at sites of ischemia (Asahara et al., 1997). EPCs provide both instructive (release of pro-angiogenic cytokines) and structural (vessel incorporation and stabilization) functions that contribute to the initiation of neo-angiogenesis. EPC populations can be characterized based on surface markers of freshly isolated cells, or they can be described by their in vitro characteristics once placed in culture. However, a major stumbling block to progress in the field has been the lack of consensus among investigators as to the optimal characterization of EPCs. This review intends to address the role of both EPC classes and evaluate how they interact in the setting of pathological angiogenesis. Since the EPCs may be responsible for turning on the "angiogenic switch," strategies have been employed to keep this switch in the "off" position for diseases like cancer, retinopathy, and wet AMD. The expectation is that EPCs will evolve into clinically useful prognostic and predictive tools in cancer and in ocular diseases associated with pathological neovascularization and that targeting this cell type is a key to successful management of patients suffering from diseases associated with pathological neovascularization.


Asunto(s)
Células Endoteliales/patología , Neoplasias/irrigación sanguínea , Neovascularización Patológica/patología , Células Madre/patología , Inhibidores de la Angiogénesis/uso terapéutico , Animales , Diferenciación Celular , Linaje de la Célula , Proliferación Celular , Células Endoteliales/efectos de los fármacos , Humanos , Neoplasias/tratamiento farmacológico , Neovascularización Patológica/fisiopatología , Neovascularización Patológica/prevención & control , Neovascularización Fisiológica , Fenotipo , Neovascularización Retiniana/patología , Neovascularización Retiniana/fisiopatología , Nicho de Células Madre , Células Madre/efectos de los fármacos
17.
Int J Audiol ; 49(8): 542-9, 2010 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-20380612

RESUMEN

This study explored experiences surrounding hearing aid use and non-use in older women with hearing loss. A narrative approach was used to gain an in-depth understanding of the meaning and contextual issues that impact upon the adaptation process of older adults and their transitions in using hearing devices. Four women over the age of sixty who were identified as being consistent hearing aid users took part in three face-to-face interviews. Wengraf's (2001) biographic-narrative-interview guiding framework was used to gather data in this study. Data were analyzed both holistically and thematically from a phenomenological perspective to identify the meaning and essence of the participants' experiences. The results revealed an overarching theme of meaningful participation in life situations and events that were linked to purposeful use and non-use of hearing aids. Barriers and facilitators related to participation, which in turn affect hearing aid use and acceptance, were uncovered. The results of this study have implications for audiologic research, and practice.


Asunto(s)
Audífonos/psicología , Pérdida Auditiva/psicología , Pérdida Auditiva/terapia , Anciano , Anciano de 80 o más Años , Envejecimiento/psicología , Comunicación , Femenino , Humanos , Entrevistas como Asunto , Persona de Mediana Edad , Narración , Aceptación de la Atención de Salud/psicología , Conducta Social
18.
Disabil Rehabil ; 32(3): 183-95, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20001824

RESUMEN

PURPOSE: This study aimed to gain knowledge about environmental factors (EFs) that impact work and social life participation of people with multiple sclerosis (MS) in Austria and Switzerland to extend the knowledge of participation and to identify key areas for measuring participation. METHOD: A three-round Delphi study was conducted defining patients as experts. In the 1st round, qualitative data was gathered through questionnaires, analyzed with content analysis, and factors were assigned to EFs as classified in the ICF. In the 2nd and 3rd round, experts judged EFs according to its relevance to obtain consensus (cut-off 75%). Categories were ranked on a scale from mostly important to important. RESULTS: One hundred and twelve Austrian and 109 Swiss experts were recruited. The content analysis revealed 768 EFs. The study resulted in a list of 176 consensus factors for Austria and 177 Switzerland. Five categories revealed to be highly important, 12 moderately important, 6 fairly important, and 10 important. CONCLUSIONS: This study indicates that participation in work or social life is influenced by physical, social, attitudinal, and policy factors. Consensus factors afford insights into areas for consideration in the development of participation outcome measurements and support a comprehensive and inclusive rehabilitation approach.


Asunto(s)
Técnica Delphi , Evaluación de la Discapacidad , Esclerosis Múltiple/fisiopatología , Medio Social , Trabajo , Actividades Cotidianas , Adulto , Anciano , Anciano de 80 o más Años , Austria/epidemiología , Demografía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Esclerosis Múltiple/epidemiología , Esclerosis Múltiple/rehabilitación , Factores de Riesgo , Encuestas y Cuestionarios , Suiza/epidemiología
19.
Am J Occup Ther ; 64(2): 215-24, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20437908

RESUMEN

The investigation of vehicle safety needs for older drivers and passengers is integral for their safe transportation. A program of research on safe transportation for seniors was launched through AUTO21, a Canadian Network of Centres of Excellence. This national research network focuses on a wide range of automotive issues, from materials and design to safety and societal issues. An inductive qualitative inquiry of seniors' driving experiences, safety feature use, and strategies to prevent injury and manage risks was a first step in this program. We conducted interviews and focus groups with 58 seniors without disabilities and 9 seniors with disabilities. We identified a lack of congruity between the vehicle and safety feature design and seniors' needs. Seniors described strategies to manage their safety and that of others. Specific aspects of vehicle design, safety features, and action strategies that support safer use and operation of a vehicle by seniors are outlined.


Asunto(s)
Conducción de Automóvil , Anciano , Anciano de 80 o más Años , Atención , Actitud , Personas con Discapacidad , Diseño de Equipo , Femenino , Humanos , Masculino , Persona de Mediana Edad , Investigación Cualitativa , Seguridad , Cinturones de Seguridad/estadística & datos numéricos , Análisis y Desempeño de Tareas
20.
Work ; 66(2): 383-404, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32568155

RESUMEN

BACKGROUND: Living and working with chronic pain requires persons to alter lifestyles and have the knowledge as well as support to manage unforeseen challenges. Knowledge for persons living with pain who want to participate in meaningful paid and unpaid work is not easily accessible. While there is literature on chronic pain management, work transitions and return to work, less emphasis has been placed on the complexity of living and working with chronic pain. The Creating a Way Forward Project was envisioned to address this gap and to identify the informational needs of workers with pain, health/helping professionals (workers' advisors, return to work specialists, legal representatives), and stakeholders. The overarching aim of the project was to use evidence and experiential knowledge to inform the development of a foundation for educational guides and toolkits to support workers with pain to achieve their outcomes for remaining at work. METHODS: Phase one of the project involved a scoping review of chronic pain and work. Phase two involved stakeholder consultations, a focus group and knowledge integration of the literature and experiential insights. Knowledge synthesis drew on a Template Analysis of multiple sources of data. RESULTS: Knowledge domains and key components were identified for persons with pain and for the health/helping professions. CONCLUSION: These domains reflect a foundation for knowledge in practical training and the development of curriculum for education in self-management program and in inter professional health profession education. These knowledge domains provide a basis for future research in integrated approaches and knowledge use toward improving transitions for persons living with chronic pain who want to participate in productive paid and unpaid work. Ongoing research in knowledge domains that health providers and persons with pain need will expand the potential for improving health outcomes in living with and managing pain.


Asunto(s)
Dolor Crónico/terapia , Guías como Asunto/normas , Traumatismos Ocupacionales/terapia , Grupos Focales/métodos , Humanos , Investigación Cualitativa , Automanejo/métodos
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