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The purpose of this literature review is to evaluate the extant research addressing food insecurity and mental health among street-involved 2S/LGBTQI+ youth in Canada. Searches were undertaken in academic databases, Google, and Google Scholar for relevant research articles, reports, and grey literature. Our team found nil research specifically addressing food insecurity and the mental health of street-involved 2S/LGBTQI+ youth in Canada. Given that, contextual and contributory factors affecting the mental health and food security of this population are discussed. The available research demonstrates a significant misalignment between the existing support mechanisms and the requirements of this specific population. This underscores the urgent necessity for the establishment of structurally competent, safe, and easily accessible resources. Moreover, there is a clear imperative for additional research endeavors aimed at addressing knowledge deficiencies. These efforts are crucial in empowering dietitians to facilitate enhanced interdisciplinary collaboration, thereby fostering the creation of sustainable, accessible, and appropriate food systems tailored to the needs of this vulnerable demographic.
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Background: Childhood cancer survivors (CCS) with chemotherapy induced sensorineural hearing loss (SNHL) are at risk for neurocognitive impairments. The purpose of this study was to determine the relationship between SNHL and cognitive function among CCS. Procedure: Inclusion: non-CNS solid tumor diagnosis; history of platinum chemotherapy (cisplatin and/or carboplatin); 8-17 years of age; off anti-cancer treatment for ≥6 months; and English speaking. Exclusion: history of intrathecal chemotherapy, cranial radiation, or baseline neurocognitive disorder. Participants completed the NIH Toolbox Cognition Battery at enrollment. T-tests were used to compare participants with normal hearing to those with hearing loss and the total sample with established Toolbox normative data (mean: 50; SD: 10). Results: Fifty-seven individuals enrolled; 52 completed full cognitive testing. Participants were on average 12.2 years of age and 7.0 years since treatment completion. Twenty-one participants (40%) received cisplatin, 27 (52%) carboplatin, and 4 (8%) received both. Fifteen participants (29%) demonstrated SNHL based on the better ear. CCS, regardless of the presence or absence of SNHL, demonstrated significantly lower mean cognitive skills compared to the normative sample in attention, executive function, language- vocabulary and oral reading, processing speed, and fluid, crystallized and total composite scores (all p < 0.01). Participants with SNHL had significantly lower crystallized composite (vocabulary, oral reading) than those with normal hearing (41.9 vs. 47.2, p < 0.05, Cohen's d = 0.62). Conclusions: CCS at risk for platinum induced hearing loss but without cranial radiation or intrathecal chemotherapy exposure demonstrate impaired cognitive skills and those with SNHL demonstrate lower crystallized composite scores.
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The literature on adolescent sleep has shown a bidirectional relationship between sleep difficulties and altered eating habits, including emotional eating. However, it is unclear if this relationship is related to preexisting body concerns, or if poor sleep is the prime contributor to emotional eating patterns. This study therefore seeks to examine body dissatisfaction as a moderator of the sleep-emotional eating relationship in an at-risk sample. Adolescents (N = 106) presenting for overnight polysomnography self-reported on time-in-bed, insomnia, body dissatisfaction, and emotional eating. Less time-in-bed was correlated with a greater desire for thinness and greater insomnia severity was related to overall emotional eating and eating in response to anxiety, anger, and frustration and in response to depression. Moderation analyses revealed that the relationships between time-in-bed and eating in response to feeling unsettled (b = -.002, 95% CI[- .003, - .001], p < .005) and eating in response to anxiety, anger, and frustration (b = -.01, 95% CI[- .01, - .001], p < .05) were exacerbated by worse body dissatisfaction. Optimizing sleep may attenuate the risk for disordered eating, particularly for adolescents with high body dissatisfaction.
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Background: Childhood cancer survivors (CCS) exposed to platinum chemotherapy are at an increased risk of developing hearing loss and reporting decreased quality of life (QOL). This study compared two QOL measures; one developed for children with hearing loss, The Hearing Environments and Refection on Quality of Life (HEAR-QL), and one validated in CCS, the Patient-Reported Outcomes Measurement Information System (PROMIS), to assess their ability to evaluate QOL deficits in this population. Methods: Subject eligibility were restricted to CCS exposed to platinum-based chemotherapy but who were free of known risk factors for cognitive impairment, (non-central nervous system tumor, no cranial radiation, or intrathecal chemotherapy). Participants had to be between 8-17 years, have completed anti-cancer therapy for at least 6 months, and have an audiogram within 1 year, Participants completed the HEAR-QL-26 (7-12 years) or the HEAR-QL-28 (13-18 years) and the PROMIS. Independent samples and/or one sample T-tests were utilized to compare participants with normal hearing and hearing loss, and to compare outcome measures to normative HEAR-QL and PROMIS data. Non-parametric correlations were utilized to evaluate the relationship between QOL and demographic and medical variables, and QOL and severity of hearing loss. Results: Fifty-four CCS were evaluable. The mean age was 12.0 years. Twenty-eight participants (51.9%) received cisplatin, 30 (55.6%) carboplatin, and 4 (7.4%) received both. Twenty participants (37%) demonstrated hearing loss. Participants with hearing loss scored significantly lower on the HEAR-QL than those with normal hearing (mean: 70.3, SD: 21.7, vs mean: 88.0, SD: 9.3, p =.004 for the HEAR-QL-26; mean: 84.7, SD: 10.2 vs mean: 94.8, SD: 3.4, p =.040 for the HEAR-QL-28). Participants with normal hearing scored significantly lower on the HEAR-QL-26 than the normative mean (mean: 88, SD: 9.3, normative mean: 98, SD: 5, p =.000). The PROMIS failed to identify any differences in QOL between participants based on hearing status, or when compared to the normative mean. Conclusion: The HEAR-QL was more sensitive than the PROMIS in identifying QOL deficits in CCS at risk for hearing loss. The HEAR-QL should be considered in studies seeking to improve the QOL of CCS with hearing loss.
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Background and Aims: Semaglutide has been studied in patients with metabolic dysfunction-associated steatohepatitis (MASH) due to potential benefit from weight loss on liver inflammation. However, preclinical studies suggest that MASH improvement may be independent of weight loss. We aim to assess the impact of semaglutide on MASH in relation to weight loss. Methods: This retrospective study included 420 patients with diabetes on semaglutide for at least 12 months between 2011 and 2022. Exclusion criteria were liver disease other than MASH, decompensated cirrhosis, malignancy, and bariatric surgery. Primary endpoints were clinically significant improvements in AST or ALT (mean difference > 6.3 U/L and > 10.6 U/L respectively). Statistical analysis included Student's t-test/ANOVA, Wilcoxon signed-rank test/Friedman test as appropriate, and binary logistic regression. Results: Median duration of semaglutide was 22.5 months and 80% of patients received 1 mg/week. BMI improved by a mean (SD) of 1.9 points (2.8), weight by 13.3 lbs. (19.1), AST by 4.1 U/L (11.5), and ALT by 5.3 U/L (14.2). In 28% and 22% of patients respectively, AST and ALT had a clinically significant improvement. MASH scores (NFS, FIB4, APRI) improved after semaglutide (p < 0.001). No statistically significant differences in AST or ALT improvement were found when patients were stratified by BMI prior to semaglutide or when stratified by percentage of weight loss. On logistic regression, the duration of semaglutide and pretreatment APRI score increased the odds of clinically significant improvements of AST and ALT. Conclusion: Semaglutide treatment was associated with improvement in transaminases and MASH scores. Higher odds of positive semaglutide effects were observed with longer treatment duration and were independent of weight loss.
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This research explores experiences of compassion among 2S/LGBTQ + Canadians living with eating disorders in the context of eating disorder treatment and community support. There is a growing body of scholarship showing disparities in eating disorder care for those within 2S/LGBTQ + communities. Among the reported concerns is a potential lack of compassion in eating disorder treatment and recovery settings, something which may serve to exacerbate feelings of isolation and perpetuate misunderstandings of 2S/LGBTQ + people's experiences. In an effort to understand these dynamics more deeply, we conducted semi-structured interviews with 2S/LGBTQ + Canadians who have experienced eating disorder care. The data collected were then subjected to Foucauldian discourse analysis, which produced three interconnected discursive considerations: feeling lack of structural compassion, 2S/LGBTQ + communities as places of respite, and 2S/LGBTQ + caregiving. One of the common threads among these discursive considerations was cis-heteronormativity ingrained in eating disorder treatment settings and health care systems more broadly. Our findings underscore the critical need for more enhanced compassion for 2S/LGBTQ + patients in eating disorder care settings. We conclude that compassion, when implemented on the levels of individual clinicians, policy and procedure, and institutions, may represent an avenue toward disrupting ingrained cis-heteronormativity and the associated discursive power structures contained in health care systems.
Two-Spirit, lesbian, gay, bisexual, transgender, queer and other sexually or gender diverse (2S/LGBTQ+) are at increased risk for eating disorders often related to minority stress, discrimination, and heteronormative gender expectations. Compassion is believed to be a fundamental aspect of healthcare that builds human connections and enhances positive outcomes. Healthcare, however, is steeped in heteronormative assumptions that may further isolate many 2S/LGBTQ+ patients. This study explored how 2S/LGBTQ+ Canadians living with eating disorders felt about their care and the role of compassion in their recovery journeys. We found that these individuals often felt misunderstood and isolated during treatment. However, they often experienced understanding by connecting with other 2S/LGBTQ+ people both in care and in the community, which provided the compassionate spaces lacking in their healthcare experiences. These findings highlight a need for making healthcare more compassionate for 2S/LGBTQ+ people. This can be done by changing policies, mandatory training for healthcare professionals, and treatment that recognizes and discusses minority stresses, uses trauma-informed practices, and gender-affirming approaches. By doing such items, standard norms can be challenged and the care for 2S/LGBTQ+ people living with eating disorders can be improved.
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Watching news broadcasts is known to elicit psychological stress. Conversely, the iconic painter Bob Ross (BR) has risen to pop culture status and amassed a following, as many find the messages and sounds of BR to be soothing and relaxing. Though, it has yet to be directly tested if such exposure can confer psychological or physiological benefit. The purpose of this study was to compare the effects of watching BR versus streaming news on markers of cardiovascular health and profile of mood states (POMS). It was hypothesized that watching BR would increase POMS scores and heart rate variability (HRV). It was also hypothesized that watching the news would increase blood pressure (BP), vascular stiffness (VS), and heart rate (HR). METHODS: In a randomized, controlled, crossover design, 18 young (21 ± 1 yrs, 9 female, 9 male) healthy participants (172.6 ± 9.9 cm, 69 ± 18 kg) were assessed for BP, VS, HR, HRV, and POMS before and after watching an episode of BR or the News matched for time (â¼27 mins). RESULTS: A significant interaction effect on POMS scores were observed for, anxiety (p = 0.01), anger (p = 0.008), depression (p = 0.003), fatigue (p = 0.001), and confusion (p = 0.01) domains after watching BR. The LF/HF ratio, an HRV marker of sympathovagal balance, was significantly lower after watching BR (p = 0.04). There were no significant time, condition, or interaction effects on systolic BP, mean arterial pressure, and diastolic BP. CONCLUSION: The "Bob Ross Effect" reduces overall mood disturbance, though appears to exert little influence on the cardiovascular system in this acute paradigm.
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Ansiedade , Coração , Feminino , Humanos , Masculino , Pressão Sanguínea , Frequência Cardíaca/fisiologia , Estresse Psicológico , Estudos Cross-Over , Adulto JovemRESUMO
Chronic sensory loss is a common and undertreated consequence of many forms of neurological injury. Emerging evidence indicates that vagus nerve stimulation (VNS) delivered during tactile rehabilitation promotes recovery of somatosensation. Here, we systematically varied the timing of VNS relative to tactile rehabilitation to determine the paradigm that yields the greatest degree of somatosensory recovery after peripheral nerve injury (PNI). The medial and ulnar nerves in rats were transected, causing chronic sensory loss. Eight weeks after injury, rats were given a VNS implant followed by four weeks of tactile rehabilitation sessions consisting of repeated mechanical stimuli to the previously denervated forepaw. Rats received VNS before, during, or after tactile rehabilitation. Delivery of VNS during rehabilitative training generates robust, significant recovery compared to rehabilitative training without stimulation (56 ± 14% improvement over sham stimulation). A matched amount of VNS before training, immediately after training, or two hours after training is significantly less effective than VNS during rehabilitative training and fails to improve recovery compared to rehabilitative training alone (5 ± 10%, 4 ± 11%, and -7 ± 22% improvement over sham stimulation, respectively). These findings indicate that concurrent delivery of VNS during rehabilitative training is most effective and illustrate the importance of considering stimulation timing for clinical implementation of VNS therapy.
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Traumatismos dos Nervos Periféricos , Estimulação do Nervo Vago , Ratos , Animais , Membro Anterior/fisiologia , Tato , Mãos , Traumatismos dos Nervos Periféricos/terapia , Nervo VagoRESUMO
Schools of medicine are increasingly focusing on efforts beyond the immediate needs of individual patients and addressing the needs of whole populations. This study examined the characteristics of population health departments and related programs within, and affiliated with, schools of medicine and how these programs address the schools' educational, clinical care, research, and service missions. Structured reviews of school of medicine websites were used to identify population health departments and related programs. An on-line survey was distributed to a subset of these programs to capture details on their activities and organizational characteristics. The authors convened leaders of population health programs to elaborate on core themes. Of 154 school of medicine websites reviewed, 37 (24%) had affiliated population health programs, including 28 (18%) with distinct departments of population health. Departments reported a variety of teaching activities related to undergraduate medical education, graduate degree programs, and certificate programs addressing a variety of population health domains including public health, health administration, epidemiology, biostatistics, informatics, and research methods. Research was a core activity for most departments with significant support coming from federal funding, with many playing major roles in clinical and translational research institutes and cancer centers. Most departments had research, data sharing, and other collaborations with affiliated health systems. All departments engaged in community service activities, including activities supporting the response to the COVID-19 pandemic. Population health programs are playing an increasingly important role in the teaching, clinical care, research, and community service missions in schools of medicine and academic medical centers.
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COVID-19 , Pandemias , Humanos , COVID-19/epidemiologia , COVID-19/prevenção & controle , Centros Médicos Acadêmicos , Saúde Pública , Disseminação de InformaçãoRESUMO
Multiple rural states and communities experience elevated rates of human immunodeficiency virus (HIV), often associated with diminished healthcare access and increased drug use. Though a substantial proportion of rural populations are sexual and gender minorities (SGM), little is known of this group regarding substance use, healthcare utilization, and HIV transmission behaviors. During May-July 2021, we surveyed 398 individuals across 22 rural Illinois counties. Participants included cisgender heterosexual males (CHm) and females (CHf) (n = 110); cisgender non-heterosexual males and females (C-MSM and C-WSW; n = 264); and transgender individuals (TG; n = 24). C-MSM participants were more likely to report daily-to-weekly alcohol and illicit drug use prescription medication misuse (versus CHf; aOR = 5.64 [2.37-13.41], 4.42 [1.56-12.53], and 29.13 [3.80-223.20], respectively), and C-MSM participants more frequently reported traveling to meet with romantic/sex partners. Further, more C-MSM and TG than C-WSW reported healthcare avoidance and denial due to their orientation/identity (p < 0.001 and p = 0.011, respectively); 47.6% of C-MSM and 58.3% of TG had not informed their provider about their orientation/identity; and only 8.6% of C-MSM reported ever receiving a pre-exposure prophylaxis (PrEP) recommendation. More work is needed to explore the substance use and sexual behaviors of rural SGM, as well as their healthcare interactions, to better target health and PrEP engagement campaigns.
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Infecções por HIV , Profilaxia Pré-Exposição , Minorias Sexuais e de Gênero , Transtornos Relacionados ao Uso de Substâncias , Pessoas Transgênero , Masculino , Feminino , Humanos , Homossexualidade Masculina , HIV , População Rural , Infecções por HIV/epidemiologia , Infecções por HIV/prevenção & controle , Comportamento SexualRESUMO
Purpose: Our purpose was to explore the experiences of self-identifying Two-Spirit, lesbian, gay, bisexual, transgender, and questioning (2SLGBTQ+) Canadians in treatments for their eating disorders (EDs). By knowing more about their experiences, we hoped to better understand how dietitians and ED service providers can better support 2SLGBTQ+ clients.Methods: Ten self-identifying 2SLGBTQ+ individuals reporting concerns regarding body image or eating patterns, as well as accessing support services or treatments, within Canada were recruited through social media platforms. Participants took part in semi-structured interviews. Data were recorded, transcribed, and analyzed using thematic analysis.Results: Four themes are presented: (i) feelings of judgement and otherness, (ii) experiencing shame in EDs and 2SLGBTQ+ identity, (iii) perceiving a lack of understanding and knowledge, and (iv) sharing lived experiences with the care team.Conclusions: Increased focus on trauma-informed approaches to ED treatment in 2SLGBTQ+ populations are indicated so that 2SLGBTQ+ clients feel comfortable to share. Increased education in 2SLGBTQ+ terminology and gender expression is recommended for dietetic professionals. We also recommend increased recruitment efforts for more diverse care teams.
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Transtornos da Alimentação e da Ingestão de Alimentos , Minorias Sexuais e de Gênero , Pessoas Transgênero , Feminino , Humanos , Canadá , Transtornos da Alimentação e da Ingestão de Alimentos/terapiaRESUMO
Human Papillomavirus (HPV) is associated with six cancers and widespread immunization with HPV vaccine could reduce the number of these cancers. Although HPV vaccination rates are available for the state of Illinois and the city of Chicago, data are limited for specific areas. We assessed rates of HPV vaccine initiation and completion among adolescents in central Illinois and identified factors associated with initiation and completion. This was a retrospective study of adolescents (aged 11-17) who receive care at the Southern Illinois University Medicine Department of Pediatrics. The outcome variables were HPV vaccination initiation (receipt of ≥ 1 dose) and completion (receipt of ≥ 2 or 3 doses, depending on age of initiation). Multivariable logistic regressions were used to identify factors associated with HPV vaccine uptake. A total of 9,351 adolescents were included in the study. Overall, HPV vaccine initiation was 46.2% and completion was 24.7%. In adjusted analyses, adolescents residing in rural areas were 38% and 24% less likely to initiate (aOR = 0.62; 95 CI: 0.54-0.72) and complete (aOR = 0.76; 95 CI: 0.65-0.88) the HPV vaccine compared with those residing in urban areas. Similarly, adolescents were less likely to initiate and complete the HPV vaccine if they were not update to date on the hepatitis A, meningococcal, or Tdap vaccinations. HPV vaccination rates in central Illinois were low, and far below the national average and the Illinois state average. Future directions should include interventions to increase HPV vaccine uptake, particularly in rural areas.
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Infecções por Papillomavirus , Vacinas contra Papillomavirus , Humanos , Adolescente , Criança , Cobertura Vacinal , Infecções por Papillomavirus/prevenção & controle , Estudos Retrospectivos , Vacinação , IllinoisRESUMO
Blood flow restriction training (BFRT) uses occlusion during low-intensity resistance training (< 50% of 1-repetition maximum, 1RM) to reduce arterial blood flow and venous return, imposing greater metabolic stress but similar muscular hypertrophy and strength gains as high-intensity resistance training (HIRT). However, no study, to date, has incorporated BFRT in a collegiate strength and conditioning setting to assess ecological validity. We aimed to investigate the effects of adding 6-weeks of accessory BFRT or HIRT to NCAA Division III soccer players prescribed resistance training regimen on muscle strength and size. Male and female (n = 17) athletes were randomly assigned to complete biceps curls 2x/week under BFRT or control (HIRT), following regularly scheduled strength training. Bicep strength (1RM) and circumference (BC) were assessed at weeks 0, 3, and 6 (men only). In men, for BC no significant interaction of condition x time was observed (p = 0.861), though condition (BFRT vs Control, p = 0.025) and time (p = 0.024) were significant. For 1RM, there was no significant interaction of condition x time (BFRT vs HIRT, p = 0.067) or of condition (p = 0.598), but there was a significant effect of time (p = 0.004). In women, there was no significant interaction between time and condition (p = 0.765) or of condition (p = 0.971) on BC, but time was significant (p = 0.045). For 1RM, there was no significant interaction of condition x time (p = 0.227) or of condition (p = 0.741), but time was (p = 0.018). In this preliminary ecological study, BFRT induced similar increases in muscle strength and circumference as HIRT in soccer players, suggesting that BFRT could be incorporated into collegiate athlete training.
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AIM: Eating concerns, disordered eating and eating disorders have been noted to negatively impact the health and wellbeing of sexual and gender diverse individuals. The aim of this study was to explore the experiences of gender diverse Canadians accessing treatment for eating disorders or disordered eating concerns to gain a deeper understanding of how dietitians and other health providers can provide gender affirming care. METHODS: Seven self-identifying gender diverse participants were recruited and took part in semi-structured interviews. Most participants identified as white. Data was analysed using thematic analysis. RESULTS: Four themes around gender dysphoria were constructed from the data, including gender dysphoria and eating disorders, barriers to accessing eating disorder treatments, harmful eating disorder treatment strategies and suggestions for eating disorder programmers and health professionals. CONCLUSION: Gender dysphoria considerations were believed to be lacking in traditional eating disorder treatment programs. Participants saw the need for more awareness and training in this area for dietitians and other health professionals.
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Transtornos da Alimentação e da Ingestão de Alimentos , Disforia de Gênero , Canadá , Transtornos da Alimentação e da Ingestão de Alimentos/epidemiologia , HumanosRESUMO
INTRODUCTION: Education seeks to empower clients to attain and maintain knowledge and skills, and in the context of occupational therapy, to enable occupational participation. While education is routinely provided in the inpatient hospital setting, little is known about how education is best adapted to meet the needs of clients with cognitive impairment. The purpose of this scoping review was to determine what is currently known about approaches to educating adults with cognitive impairment in the inpatient hospital setting. METHODS: Five databases were systematically searched to find studies that reported on the use of education in the inpatient hospital setting with adults with cognitive impairment. RESULTS: Ten articles were retrieved from the search with duplication of authors across the articles, indicating a small group of research and researchers. Cognitive impairment was not well assessed across all the studies and none included participants with severe cognitive impairment. A number of barriers to education were identified, including time constraints, uncertainty around who should be providing education, a shortage of resources, and client-related barriers such as cognitive deficits. From the retrieved studies it was found that education should occur at multiple time points, be individually tailored, and utilise mixed modal approaches such as verbal and written methods. There was also a preference for less use of jargon, and engagement with carers and clients where possible. CONCLUSION: This scoping review highlights factors impacting the provision of education tailored to the needs of clients with cognitive impairment in the inpatient setting. The findings also call to attention the need for better assessment of cognition to guide provision of tailored education, as well as future studies exploring how to best educate clients with not only mild/moderate cognitive impairment but also more severe impairments.
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Disfunção Cognitiva/epidemiologia , Pacientes Internados , Terapia Ocupacional/organização & administração , Educação de Pacientes como Assunto/organização & administração , Escolaridade , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Preferência do Paciente , Índice de Gravidade de Doença , Fatores SocioeconômicosRESUMO
OBJECTIVE: Distal radius fractures in the older population significantly impair grip strength. The aim of the study was to investigate whether a hand strength focused exercise program during the period of immobilization for nonoperatively managed distal radius fractures in this population improved grip strength and quality of life. DESIGN: This is a single-center randomized controlled trial with concealed allocation, assessor blinding, and intention-to-treat analysis. Fifty-two patients older than 60 yrs who experienced distal radius fractures managed nonoperatively with cast immobilization. The intervention group (n = 26) received a home hand strength-focused exercise program from 2 and 6 wks after injury while immobilized in a full short arm cast. The control group (n = 26) performed finger range of motion exercises as per protocol. Primary outcome was grip strength ratio of injured arm compared with uninjured arm. Secondary outcome included functional scores of the 11-item shortened version of the Disabilities of the Arm, Shoulder and Hand. Outcomes were measured at 2, 6, and 12 wks after injury. RESULTS: The intervention group significantly improved grip strength ratio at both 6 and 12 wks (6 wks: 40% vs 25%, P = 0.0044, and 12 wks: 81% vs 51%, P = 0.0035). The intervention group improved the 11-item Disabilities of the Arm, Shoulder and Hand score at 12 wks; however, this was not statistically significant (25 vs 40, P = 0.066). CONCLUSIONS: A hand strength-focused exercise program for elderly patients with distal radius fractures while immobilized significantly improved grip strength.
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Terapia por Exercício/métodos , Fixação de Fratura/reabilitação , Força da Mão , Fraturas do Rádio/reabilitação , Traumatismos do Punho/reabilitação , Idoso , Moldes Cirúrgicos , Feminino , Humanos , Análise de Intenção de Tratamento , Masculino , Pessoa de Meia-Idade , Fraturas do Rádio/fisiopatologia , Método Simples-Cego , Resultado do Tratamento , Traumatismos do Punho/fisiopatologiaRESUMO
Defective endocytosis and vesicular trafficking of signaling receptors has recently emerged as a multifaceted hallmark of malignant cells. Clathrin-coated pits (CCPs) display highly heterogeneous dynamics on the plasma membrane where they can take from 20â s to over 1 min to form cytosolic coated vesicles. Despite the large number of cargo molecules that traffic through CCPs, it is not well understood whether signaling receptors activated in cancer, such as epidermal growth factor receptor (EGFR), are regulated through a specific subset of CCPs. The signaling lipid phosphatidylinositol (3,4,5)-trisphosphate [PI(3,4,5)P3], which is dephosphorylated by phosphatase and tensin homolog (PTEN), is a potent tumorigenic signaling lipid. By using total internal reflection fluorescence microscopy and automated tracking and detection of CCPs, we found that EGF-bound EGFR and PTEN are enriched in a distinct subset of short-lived CCPs that correspond with clathrin-dependent EGF-induced signaling. We demonstrated that PTEN plays a role in the regulation of CCP dynamics. Furthermore, increased PI(3,4,5)P3 resulted in higher proportion of short-lived CCPs, an effect that recapitulates PTEN deletion. Altogether, our findings provide evidence for the existence of short-lived 'signaling-capable' CCPs.
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Invaginações Revestidas da Membrana Celular/metabolismo , Receptores ErbB/metabolismo , PTEN Fosfo-Hidrolase/genética , Humanos , Transdução de SinaisRESUMO
Catatonia has been described in children with intellectual disabilities (IDs). These are the first three published cases of catatonia in adults older than 50 years of age with IDs. They were followed using the KANNER scale and, in one case, creatinine phosphokinase (CPK) monitoring. Case 1 is a 67-year-old Caucasian who probably had been having intermittent episodes of undiagnosed catatonia withdrawal for many years. His episodes of agitation and withdrawal behavior responded to lorazepam up to 8 mg/day. Case 2 is a 63-year-old Caucasian male who had probably had undiagnosed catatonic episodes since age 25. An agitation episode that rated 88 on Part 2 of the KANNER scale ended within minutes after he received 1 mg of intramuscular lorazepam. He had no symptom relapses for 4 years after getting stable oral lorazepam doses (3-8.5 mg/day). Case 3 is a 55-year-old African-American male with severe ID and bradycardia (with a pacemaker). He had been "institutionalized" since age 22 and his undiagnosed catatonic episodes appeared to have been intermittently present for at least the last ten years. As he became tolerant and experienced symptom relapse, oral lorazepam was slowly increased (1.5-18 mg/day). Electroconvulsive therapy was ruled out due to his pacemaker.
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BACKGROUND: Although there is substantial evidence of differential hypothalamic-pituitary-adrenal (HPA) axis activity in both generalized and abdominal obesity, consistent trends in obesity-related HPA axis perturbations have yet to be identified. OBJECTIVES: To systematically review the existing literature on HPA activity in obesity, identify possible explanations for inconsistencies in the literature, and suggest methodological improvements for future study. DATA SOURCES: Included papers used Pubmed, Google Scholar, and the University of California Library search engines with search terms body mass index (BMI), waist-to-hip ratio (WHR), waist circumference, sagittal diameter, abdominal versus peripheral body fat distribution, body fat percentage, DEXA, abdominal obesity, and cortisol with terms awakening response, slope, total daily output, reactivity, feedback sensitivity, long-term output, and 11ß-HSD expression. STUDY ELIGIBILITY CRITERIA: Empirical research papers were eligible provided that they included at least one type of obesity (general or abdominal), measured at least one relevant cortisol parameter, and a priori tested for a relationship between obesity and cortisol. RESULTS: A general pattern of findings emerged where greater abdominal fat is associated with greater responsivity of the HPA axis, reflected in morning awakening and acute stress reactivity, but some studies did show underresponsiveness. When examined in adipocytes, there is a clear upregulation of cortisol output (due to greater expression of 11ß-HSD1), but in hepatic tissue this cortisol is downregulated. Overall obesity (BMI) appears to also be related to a hyperresponsive HPA axis in many but not all studies, such as when acute reactivity is examined. LIMITATIONS: The reviewed literature contains numerous inconsistencies and contradictions in research methodologies, sample characteristics, and results, which partially precluded the development of clear and reliable patterns of dysregulation in each investigated cortisol parameter. CONCLUSIONS AND IMPLICATIONS: The literature to date is inconclusive, which may well arise from differential effects of generalized obesity vs. abdominal obesity or from modulators such as sex, sex hormones, and chronic stress. While the relationship between obesity and adipocyte cortisol seems to be clear, further research is warranted to understand how adipocyte cortisol metabolism influences circulating cortisol levels and to establish consistent patterns of perturbations in adrenal cortisol activity in both generalized and abdominal obesity.
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Hidrocortisona/análise , Sistema Hipotálamo-Hipofisário/fisiopatologia , Obesidade/fisiopatologia , Sistema Hipófise-Suprarrenal/fisiopatologia , Humanos , Saliva/químicaRESUMO
BACKGROUND: Telemedicine has emerged as an alternative mode of health care delivery over the last decade. To date, there is very limited published information in the field of telehealth and paediatric nephrology. The aim of this study was to review our experience with paediatric telenephrology in Queensland, Australia. METHODS: A retrospective audit of paediatric nephrology telehealth consultations to determine the nature of the telehealth activity, reasons for referral to telehealth, and to compare costs and potential savings of the telehealth service. RESULTS: During a ten-year period (2004 - 2013), 318 paediatric telenephrology consultations occurred for 168 patients (95 male) with the median age of 8 years (range 3 weeks to 24 years). Congenital anomalies of the kidney and urinary tract (30 %), followed by nephrotic syndrome (16 %), kidney transplant (12 %), and urinary tract infection (9 %) were the most common diagnoses. The estimated cost savings associated with telehealth were $31,837 in 2013 (average saving of $505 per consultation). CONCLUSIONS: Our study suggests that paediatric telenephrology is a viable and economic method for patient assessment and follow up. The benefits include improved access to paediatric nephrology services for patients and their families, educational opportunity for the regional medical teams, and a substantial cost saving for the health care system.