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OBJECTIVE: To determine whether the "sacral sparing" definition for completeness of traumatic spinal cord injury (SCI) is a more stable definition than the previously used Frankel Classification. DESIGN: Retrospective analysis of individuals enrolled in the Spinal Cord Injury Model Systems (SCIMS) database between 2011 and 2018. SETTING: SCIMS centers. PARTICIPANTS: Individuals (N=804) with traumatic SCI who were at least 16 years old at time of injury, were admitted to rehabilitation within 30 days, had American Spinal Injury Association Impairment Scale (AIS) grades A-D at admission, and had complete neurologic data at the time of admission and 1 year. INTERVENTION: Not applicable. MAIN OUTCOME MEASURES: Frankel and AIS scores were computed for a cohort of 804 eligible cases. Stability was compared between the 2 classification systems by calculating the proportions of cases in which regression (conversion to a more severe impairment level) was observed. RESULTS: A larger proportion of individuals classified with "incomplete" injuries (grades B-D) at the time of admission using the Frankel system regressed to complete status at 1 year compared with the AIS criteria (9.4% vs 2.0%). Those with grade B injuries regressed to grade A more often using the Frankel system compared with the AIS system (19.7% to 5.4%). A larger proportion of people diagnosed as Frankel grade C or D regressed to Frankel grade A compared with individuals diagnosed as AIS grade C or D who regressed to AIS grade A (5.0% to 1.1%). CONCLUSIONS: More individuals diagnosed with neurologically incomplete SCI regressed to complete status at 1 year when using the Frankel system compared with AIS classification, which is based on sacral sparing. This reinforces the finding that the "sacral sparing" definition is a more stable classification in traumatic SCI.
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Traumatismos da Medula Espinal/classificação , Traumatismos da Medula Espinal/reabilitação , Índices de Gravidade do Trauma , Adulto , Fatores Etários , Avaliação da Deficiência , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recuperação de Função Fisiológica , Reprodutibilidade dos Testes , Estudos Retrospectivos , Fatores Sexuais , Fatores SocioeconômicosRESUMO
MERTK, a member of the TAM (TYRO3, AXL, and MERTK) receptor tyrosine kinases, has complex and diverse roles in cell biology. On the one hand, knock-out of MERTK results in age-dependent autoimmunity characterized by failure of apoptotic cell clearance, while on the other, MERTK overexpression in cancer drives classical oncogene pathways leading to cell transformation. To better understand the interplay between cell transformation and efferocytosis, we stably expressed MERTK in human MCF10A cells, a non-tumorigenic breast epithelial cell line devoid of endogenous MERTK. While stable expression of MERTK in MCF10A resulted in enhanced motility and AKT-mediated chemoprotection, MERTK-10A cells did not form stable colonies in soft agar, or enhance proliferation compared with parental MCF10A cells. Concomitant to chemoresistance, MERTK also stimulated efferocytosis in a gain-of-function capacity. However, unlike AXL, MERTK activation was highly dependent on apoptotic cells, suggesting MERTK may preferentially interface with phosphatidylserine. Consistent with this idea, knockdown of MERTK in breast cancer cells MDA-MB 231 reduced efferocytosis, while transient or stable expression of MERTK stimulated apoptotic cell clearance in all cell lines tested. Moreover, human breast cancer cells with higher endogenous MERTK showed higher levels of efferocytosis that could be blocked by soluble TAM receptors. Finally, through MERTK, apoptotic cells induced PD-L1 expression, an immune checkpoint blockade, suggesting that cancer cells may adopt MERTK-driven efferocytosis as an immune suppression mechanism for their advantage. These data collectively identify MERTK as a significant link between cancer progression and efferocytosis, and a potentially unrealized tumor-promoting event when MERTK is overexpressed in epithelial cells.
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Neoplasias da Mama/genética , Transformação Celular Neoplásica/genética , Células Epiteliais/metabolismo , Proteínas Proto-Oncogênicas/genética , Receptores Proteína Tirosina Quinases/genética , Apoptose/genética , Neoplasias da Mama/patologia , Movimento Celular/genética , Células Epiteliais/patologia , Feminino , Regulação Neoplásica da Expressão Gênica , Humanos , Fagocitose/genética , Proteínas Proto-Oncogênicas/metabolismo , Receptores Proteína Tirosina Quinases/metabolismo , c-Mer Tirosina Quinase , Receptor Tirosina Quinase AxlRESUMO
CONTEXT: There is limited research on return to education (RTE) after spinal cord injury (SCI). As a result, few programs exist to help people achieve this goal. OBJECTIVE: The primary objective was to investigate the barriers and facilitators to RTE, and the relationship between RTE and quality of life (QOL). The secondary objective was to examine the role of a Vocational Resource Facilitation (VRF) program on RTE. METHODS: A mixed methods approach with a semi-structured interview and online survey was used. Participants included 15 people with SCI with RTE goals who received VRF services at an acute inpatient rehabilitation hospital. Qualitative responses on the barriers, facilitators and perceived benefits of RTE were analyzed using a grounded theory strategy. RESULTS: Barriers to RTE included physical and mental health, transportation, time, environmental barriers, finances, lack of knowledge about available resources, and discrimination. Facilitators to RTE included the VRF program, social support, financial support, virtual learning, organizational support, and policy constructs. People who RTE after SCI reported better QOL, less depressed mood than those who did not, and were more likely to have returned to work. CONCLUSIONS: This study highlighted common barriers and facilitators to RTE, and potential areas of intervention. VRF is a potentially efficacious early intervention vocational rehabilitation approach that improves participation in education and employment for people with SCI. People who received VRF and achieved RTE may have better QOL outcomes and improved employability.
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ABSTRACT: People with disabilities encounter significant barriers in health care and report that healthcare providers often lack an understanding in caring for them. Currently, there is limited disability awareness training in medical school curricula. This mixed-methods pilot study examined the effects of integrating a short wheelchair immersion program in a physical medicine and rehabilitation clerkship, versus the clerkship alone, on attitudes toward people with disabilities, comfort in treating people with disabilities, knowledge of wheelchair etiquette, and understanding of wheelchair-associated challenges. The standard training group underwent the physical medicine and rehabilitation clerkship, consisting of a 2-wk clinical rotation and didactic program. The intervention group additionally underwent a newly developed 1-hr wheelchair program where they simulated mobility and some activities of daily living as a "wheelchair user" and "caregiver." Quantitative analysis demonstrated that all students who completed the clerkship had significantly improved attitudes toward and comfort in treating people with disabilities, knowledge of wheelchair etiquette, and understanding of wheelchair-associated challenges, whereas students in the wheelchair immersion program had a greater change in understanding wheelchair-associated challenges. Qualitative analysis revealed that the intervention resulted in positive attitudinal changes. These findings suggest that integrating a brief wheelchair immersion program with a physical medicine and rehabilitation clerkship may enhance disability awareness training in medical school curricula.
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Estágio Clínico , Medicina Física e Reabilitação , Cadeiras de Rodas , Atividades Cotidianas , Atitude , Currículo , Emoções , Humanos , Projetos Piloto , Estudos ProspectivosRESUMO
BACKGROUND: There is limited literature exploring the benefits of interactive wheelchair educational programs in medical student curricula. OBJECTIVE: To identify the effect of an educational interactive wheelchair program on medical students' understanding of wheelchair use. Researchers hypothesized that the program would increase understanding. DESIGN: Repeated-measures survey study with postintervention comparison. SETTING: Inpatient acute rehabilitation center. PARTICIPANTS: Out of 123 eligible fourth-year medical students on a mandatory physical medicine and rehabilitation clerkship, 79 students participated. INTERVENTION: All participants underwent a 2-hour educational wheelchair program consisting of (1) a disability lecture; (2) a video on the importance of proper wheelchair type and fit, wheelchair prescription, as well as recreational wheelchair use; and (3) an interactive wheelchair experience. MAIN OUTCOME MEASURES: Pre- and postsurvey Likert scale questions measured medical students' understanding of four main areas: (1) impact of manual wheelchair use, (2) challenges of manual wheelchair use, (3) manual wheelchair skills, and (4) wheelchair etiquette. RESULTS: A two-tailed sign test demonstrated a highly significant increase from pre- to postsurvey scores in each survey section (P < .001). Presurvey and postsurvey mean scores for impact of manual wheelchair use, challenges of manual wheelchair use, manual wheelchair skills, and wheelchair etiquette survey sections were 3.9 and 4.4, 3.1 and 4.4, 2.4 and 4.4, and 2.5 and 4.0, respectively. CONCLUSIONS: This study demonstrates that an interactive educational wheelchair program effectively increases medical students' understanding of manual wheelchair use. The addition of an educational interactive wheelchair program to medical student curricula is recommended to improve medical students' understanding of manual wheelchair use and its impact on users.