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1.
Community Ment Health J ; 60(1): 98-107, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-37688670

RESUMO

The purpose of this study was to describe the feasibility of implementing suicide risk screening in a virtual addiction clinic. Suicide risk screening was implemented in a virtual addiction clinic serving individuals with substance use disorders (SUD) using a quality improvement framework. One-hundred percent (252/252) of eligible patients enrolled in the clinic were screened for suicide risk (44% female; M[SD] age = 45.0[11.0] years, range = 21-68 years). Nineteen patients (8%) screened positive for suicide risk. After screening, no patients required emergency suicide interventions (100% non-acute positive). Notably, 74% (14/19) of those who screened positive did so by endorsing at least one past suicide attempt with no recent ideation. Suicide risk screening in virtual addiction clinics yields important clinical information for high-risk SUD populations without overburdening workflow with emergency services. Given the high proportion of non-acute positive screens based on suicide attempt histories with no recent ideation, clinicians may utilize information on suicide attempt history to facilitate further mental healthcare.


Assuntos
Comportamento Aditivo , Transtornos Relacionados ao Uso de Substâncias , Humanos , Feminino , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Masculino , Ideação Suicida , Tentativa de Suicídio , Fatores de Risco , Programas de Rastreamento
2.
J Public Health Manag Pract ; 29(5): E214-E222, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37131276

RESUMO

Suicide and suicidal behavior among youth and young adults are a major public health crisis, exacerbated by the COVID-19 pandemic and demonstrated by increases in suicidal ideation and attempts among youth. Supports are needed to identify youth at risk and intervene in safe and effective ways. To address this need, the American Academy of Pediatrics and the American Foundation for Suicide Prevention, in collaboration with experts from the National Institute of Mental Health, developed the Blueprint for Youth Suicide Prevention ( Blueprint ) to translate research into strategies that are feasible, pragmatic, and actionable across all contexts in which youth live, learn, work, and play. In this piece, we describe the process of developing and disseminating the Blueprint. Through a summit and focus meetings, cross-sectoral partners convened to discuss the context of suicide risk among youth; explore the landscape of science, practice, and policy; build partnerships; and identify strategies for clinics, communities, and schools-all with a focus on health disparities and equity. These meetings resulted in 5 major takeaways: (1) suicide is often preventable; (2) health equity is critical to suicide prevention; (3) individual and systems changes are needed; (4) resilience should be a key focus; and (5) cross-sectoral partnerships are critical. These meetings and takeaways then informed the content of the Blueprint , which discusses the epidemiology of youth and young adult suicide and suicide risk, including health disparities; the importance of a public health framework; risk factors, protective factors, and warning signs; strategies for clinical settings, strategies for community and school settings; and policy priorities. Following the process description, lessons learned are also discussed, followed by a call to action for the public health community and all who serve and support youth. Finally, key steps to establishing and sustaining partnerships and implications for policy and practice are discussed.


Assuntos
Prevenção do Suicídio , Suicídio , Adulto Jovem , Humanos , Adolescente , Criança , Pandemias , Suicídio/psicologia , Ideação Suicida , Fatores de Risco
3.
Exp Cell Res ; 401(2): 112527, 2021 04 15.
Artigo em Inglês | MEDLINE | ID: mdl-33675807

RESUMO

Metastasis is the leading cause of mortality in cancer patients. To migrate to distant sites, cancer cells would need to adapt their behaviour in response to different tissue environments. Thus, it is essential to study this process in models that can closely replicate the tumour microenvironment. Here, we evaluate the use of organotypic liver and brain slices to study cancer metastasis. Morphological and viability parameters of the slices were monitored daily over 3 days in culture to assess their stability as a realistic 3D tissue platform for in vitro metastatic assays. Using these slices, we evaluated the invasion of MDA-MB-231 breast cancer cells and of a subpopulation that was selected for increased motility. We show that the more aggressive invasion of the selected cells likely resulted not only from their lower stiffness, but also from their lower adhesion to the surrounding tissue. Different invasion patterns in the brain and liver slices were observed for both subpopulations. Cells migrated faster in the brain slices (with an amoeboid-like mode) compared to in the liver slices (where they migrated with mesenchymal or collective migration-like modes). Inhibition of the Ras/MAPK/ERK pathway increased cell stiffness and adhesion forces, which resulted in reduced invasiveness. These results illustrate the potential for organotypic tissue slices to more closely mimic in vivo conditions during cancer cell metastasis than most in vitro models.


Assuntos
Neoplasias da Mama/genética , Invasividade Neoplásica/genética , Metástase Neoplásica/genética , Microambiente Tumoral/genética , Encéfalo/patologia , Neoplasias da Mama/patologia , Movimento Celular/genética , Proliferação de Células/genética , Sobrevivência Celular/genética , Feminino , Regulação Neoplásica da Expressão Gênica/genética , Humanos , Fígado/patologia , Sistema de Sinalização das MAP Quinases/genética , Quinases de Proteína Quinase Ativadas por Mitógeno/genética , Invasividade Neoplásica/patologia , Metástase Neoplásica/patologia , Proteínas ras/genética
4.
Pediatr Emerg Care ; 38(1): 22-25, 2022 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-32925705

RESUMO

OBJECTIVE: The objective of this study was to assess whether patient-reported anxiety symptoms are associated with suicide risk in pediatric emergency department (ED) patients. An additional objective was to examine differences between patients presenting for medical/surgical or psychiatric complaints. METHODS: Pediatric patients aged 10 to 21 years were recruited from 3 pediatric EDs. Participants completed self-report questionnaires assessing for suicidal ideation and behavior, in addition to questions of interest about recent feelings of unbearable anxiety and depression. Adjusted odds ratios were calculated to assess the relationship between endorsement of recent anxiety and screening positive for suicide risk. RESULTS: Data were analyzed from 522 participants, including 344 presenting with medical/surgical chief complaints and 178 presenting with psychiatric complaints. Overall, 28.9% of participants screened positive for suicide risk, 29.9% endorsed recent feelings of anxiety, and 24.3% endorsed recent feelings of depression. Patients who self-reported recent anxiety symptoms were 5 times more likely to screen positive for suicide risk (adjusted odds ratios = 5.18, 95% confidence interval = 3.06-8.76). Analysis of the 344 medical/surgical patients revealed that this subsample was also 5 times more likely to screen positive for suicide risk if they endorsed recent anxiety (adjusted odds ratios = 4.87, 95% confidence interval = 2.09-11.36). CONCLUSIONS: Self-reported suicidal ideation and feelings of unbearable anxiety are prevalent among patients presenting to pediatric EDs. Patients who self-report recent feelings of unbearable anxiety are significantly more likely to screen positive for suicide risk, regardless of whether their presenting complaint is medical/surgical or psychiatric in nature.


Assuntos
Ideação Suicida , Suicídio , Adolescente , Ansiedade/diagnóstico , Ansiedade/epidemiologia , Criança , Serviço Hospitalar de Emergência , Humanos , Programas de Rastreamento , Medição de Risco , Autorrelato
5.
Psychosomatics ; 61(6): 713-722, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32487323

RESUMO

BACKGROUND: Few brief suicide risk screening instruments are validated for use in both adult and pediatric medical populations. Using the pediatric Ask Suicide-Screening Questions (ASQ) development study as a model, this study aimed to determine whether the ASQ is a valid suicide risk-screening instrument for use among adults medical patients, as well as to evaluate a set of other potential screening questions for use in adults. METHODS: Adult patients hospitalized on inpatient medical/surgical units from 4 hospitals were recruited to participate in a cross-sectional instrument-validation study. The 4-item ASQ and other candidate items were compared against the 25-item, previously validated Adult Suicidal Ideation Questionnaire as the criterion standard. RESULTS: A total of 727 adult medical inpatients completed the screening process. Compared with the Adult Suicidal Ideation Questionnaire, the ASQ performed best among the full set of candidate items, demonstrating strong psychometric properties, with a sensitivity of 100% (95% confidence interval = 90%-100%), a specificity of 89% (95% confidence interval = 86%-91%), and a negative predictive value of 100% (95% confidence interval = 99%-100%). A total of 4.8% (35/727) of the participants screened positive for suicide risk based on the standard criterion Adult Suicidal Ideation Questionnaire. CONCLUSIONS: The ASQ is a valid and brief suicide risk-screening tool for use among adults. Screening medical/surgical inpatients for suicide risk can be performed effectively for both adult and pediatric patients using this brief, primary screener.


Assuntos
Pacientes Internados , Prevenção do Suicídio , Adulto , Criança , Estudos Transversais , Humanos , Programas de Rastreamento , Ideação Suicida
6.
J Clin Psychol Med Settings ; 27(1): 173-181, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31127422

RESUMO

Anxiety symptoms in children and adolescents with a chronic health condition have been estimated as high as 40% lifetime prevalence. Clinicians often rely on parent/caregiver information to supplement or substitute child self-report related to pediatric physical and mental health. We developed a caregiver proxy version (STAI-P) for the State-Trait Anxiety Inventory (STAI) State Anxiety Scale that was compared with a child self-report version in 201 parent-child dyads to evaluate its utility in measuring state anxiety in chronically ill youth. For patients aged 7-12, self-reports of state anxiety were moderately associated with parent distress and health provider-reported functional status, but negatively associated with parent STAI-P scores. For patients aged 13-17, self-reports of state anxiety were significantly associated with STAI-P scores, parent distress, and health provider-reported functional status. The STAI-P parent version may be a useful tool in identifying and addressing anxiety symptoms in youth living with a chronic health condition.


Assuntos
Transtornos de Ansiedade/diagnóstico , Doença Crônica/psicologia , Pais/psicologia , Escalas de Graduação Psiquiátrica/normas , Autorrelato , Adolescente , Transtornos de Ansiedade/psicologia , Criança , Pré-Escolar , Feminino , Nível de Saúde , Humanos , Masculino , Escalas de Graduação Psiquiátrica/estatística & dados numéricos
8.
Psychosomatics ; 60(1): 1-9, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30384966

RESUMO

BACKGROUND: Youth suicide is on the rise worldwide. Most suicide decedents received healthcare services in the year before killing themselves. Standardized workflows for suicide risk screening in pediatric hospitals using validated tools can help with timely and appropriate intervention, while attending to The Joint Commission Sentinel Event Alert 56. OBJECTIVE: Here we describe the first attempt to generate clinical pathways for patients presenting to pediatric emergency departments (EDs) and inpatient medical settings. METHODS: The workgroup reviewed available evidence and generated a series of steps to be taken to feasibly screen medical patients presenting to hospitals. When evidence was limited, expert consensus was used. A standardized, iterative approach was utilized to create clinical pathways. Stakeholders reviewed initial drafts. Feedback was incorporated into the final pathway. RESULTS: Clinical pathways were created for suicide risk screening in pediatric EDs and inpatient medical/surgical units. The pathway outlines a 3-tiered screening process utilizing the Ask Suicide-Screening Questions for initial screening, followed by a brief suicide safety assessment to determine if a full suicide risk assessment is warranted. This essential step helps conserve resources and decide upon appropriate interventions for each patient who screens positive. Detailed implementation guidelines along with scripts for provider training are included. CONCLUSION: Youth suicide is a significant public health problem. Clinical pathways can empower hospital systems by providing a guide for feasible and effective suicide risk-screening implementation by using validated tools to identify patients at risk and apply appropriate interventions for those who screen positive. Outcomes assessment is essential to inform future iterations.


Assuntos
Hospitais Pediátricos , Programas de Rastreamento/métodos , Medição de Risco/métodos , Prevenção do Suicídio , Adolescente , Procedimentos Clínicos , Serviço Hospitalar de Emergência , Saúde Global , Hospitalização , Humanos , Psiquiatria , Encaminhamento e Consulta , Fluxo de Trabalho
9.
Prev Sci ; 18(2): 174-182, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-27678381

RESUMO

The pediatric emergency department (ED) is a critical location for the identification of children and adolescents at risk for suicide. Screening instruments that can be easily incorporated into clinical practice in EDs to identify and intervene with patients at increased suicide risk is a promising suicide prevention strategy and patient safety objective. This study is a retrospective review of the implementation of a brief suicide screen for pediatric psychiatric ED patients as standard of care. The Ask Suicide Screening Questions (ASQ) was implemented in an urban pediatric ED for patients with psychiatric presenting complaints. Nursing compliance rates, identification of at-risk patients, and sensitivity for repeated ED visits were evaluated using medical records from 970 patients. The ASQ was implemented with a compliance rate of 79 %. Fifty-three percent of the patients who screened positive (237/448) did not present to the ED with suicide-related complaints. These identified patients were more likely to be male, African American, and have externalizing behavior diagnoses. The ASQ demonstrated a sensitivity of 93 % and specificity of 43 % to predict return ED visits with suicide-related presenting complaints within 6 months of the index visit. Brief suicide screening instruments can be incorporated into standard of care in pediatric ED settings. Such screens can identify patients who do not directly report suicide-related presenting complaints at triage and who may be at particular risk for future suicidal behavior. Results have the potential to inform suicide prevention strategies in pediatric EDs.


Assuntos
Serviço Hospitalar de Emergência , Hospitais Pediátricos , Ideação Suicida , Prevenção do Suicídio , Adolescente , Feminino , Humanos , Masculino , Estudos Retrospectivos , Medição de Risco/métodos , Adulto Jovem
10.
J Pediatr ; 170: 295-300, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26725208

RESUMO

OBJECTIVE: To describe opinions about suicide risk screening in a pediatric medical inpatient sample. STUDY DESIGN: As part of a larger instrument validation study, 200 pediatric medical inpatients (ages 10-21 years) were screened for suicide risk. Participants completed demographic self-report forms and were asked their opinions about suicide risk screening. Patient responses were recorded verbatim by trained research social workers. Qualitative data was analyzed using thematic analysis. RESULTS: The majority of adolescents who participated had not been previously asked about suicide (N = 101; 62.3%) and were supportive of suicide risk screening (81.0%). Five salient themes emerged from the qualitative analysis of patient opinions: prevention, elevated risk, emotional benefits, provider responsibility, and lack of harm in asking. CONCLUSIONS: The majority of youth screened for suicide risk on medical inpatient units were supportive of suicide risk screening. Opinion data have the potential to inform screening practices and assure clinicians that suicide risk screening will be acceptable to pediatric patients and their parents. Given the lack of screening in these patients' past experiences, the medical setting is a unique opportunity to capture youth at risk for suicide.


Assuntos
Adolescente Hospitalizado/psicologia , Criança Hospitalizada/psicologia , Pacientes Internados/psicologia , Programas de Rastreamento/psicologia , Aceitação pelo Paciente de Cuidados de Saúde/psicologia , Prevenção do Suicídio , Adolescente , Boston , Criança , Feminino , Humanos , Masculino , Programas de Rastreamento/métodos , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Pesquisa Qualitativa , Suicídio/psicologia , Adulto Jovem
11.
Pediatr Emerg Care ; 32(6): 347-51, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26417959

RESUMO

OBJECTIVES: This study aimed to describe the association between recent bullying victimization and risk of suicide among pediatric emergency department (ED) patients. METHODS: Patients presenting to 1 of 3 different urban pediatric EDs with either medical/surgical or psychiatric chief complaints completed structured interviews as part of a study to develop a suicide risk screening instrument, the Ask Suicide-Screening Questions. Seventeen candidate items and the criterion reference Suicidal Ideation Questionnaire were administered to patients ages 10 to 21 years. Bullying victimization was assessed by a single candidate item ("In the past few weeks, have you been bullied or picked on so much that you felt like you couldn't stand it anymore?"). RESULTS: A total of 524 patients completed the interview (34.4% psychiatric chief complaints; 56.9% female; 50.4% white, non-Hispanic; mean [SD] age, 15.2 [2.6] years). Sixty patients (11.5%) reported recent bullying victimization, and of these, 33 (55.0%) screened positive for suicide risk on the Ask Suicide-Screening Questions or the previously validated Suicidal Ideation Questionnaire. After controlling for demographic and clinical variables, including a history of depression and drug use, the odds of screening positive for suicide risk were significantly greater in patients who reported recent bullying victimization (adjusted odds ratio, 3.19; 95% confidence interval, 1.66-6.11). After stratification by chief complaint, this association persisted for medical/surgical patients but not for psychiatric patients. CONCLUSIONS: Recent bullying victimization was associated with increased odds of screening positive for elevated suicide risk among pediatric ED patients presenting with medical/surgical complaints. Understanding this important correlate of suicide risk in pediatric ED patients may help inform ED-based suicide prevention interventions.


Assuntos
Bullying , Vítimas de Crime/psicologia , Serviço Hospitalar de Emergência , Ideação Suicida , Adolescente , Criança , Estudos Transversais , Feminino , Hospitais Urbanos , Humanos , Masculino , Programas de Rastreamento , Estudos Prospectivos , Medição de Risco , Fatores de Risco , Inquéritos e Questionários , Adulto Jovem
12.
Angew Chem Int Ed Engl ; 55(12): 3862-81, 2016 Mar 14.
Artigo em Inglês | MEDLINE | ID: mdl-26854878

RESUMO

The advent of soft lithography allowed for an unprecedented expansion in the field of microfluidics. However, the vast majority of PDMS microfluidic devices are still made with extensive manual labor, are tethered to bulky control systems, and have cumbersome user interfaces, which all render commercialization difficult. On the other hand, 3D printing has begun to embrace the range of sizes and materials that appeal to the developers of microfluidic devices. Prior to fabrication, a design is digitally built as a detailed 3D CAD file. The design can be assembled in modules by remotely collaborating teams, and its mechanical and fluidic behavior can be simulated using finite-element modeling. As structures are created by adding materials without the need for etching or dissolution, processing is environmentally friendly and economically efficient. We predict that in the next few years, 3D printing will replace most PDMS and plastic molding techniques in academia.

13.
J Neurosci ; 34(37): 12241-52, 2014 Sep 10.
Artigo em Inglês | MEDLINE | ID: mdl-25209267

RESUMO

The mammalian olfactory system detects a plethora of environmental chemicals that are perceived as odors or stimulate instinctive behaviors. Studies using odorant receptor (OR) genes have provided insight into the molecular and organizational strategies underlying olfaction in mice. One important unanswered question, however, is whether these strategies are conserved in primates. To explore this question, we examined the macaque, a higher primate phylogenetically close to humans. Here we report that the organization of sensory inputs in the macaque nose resembles that in mouse in some respects, but not others. As in mouse, neurons with different ORs are interspersed in the macaque nose, and there are spatial zones that differ in their complement of ORs and extend axons to different domains in the olfactory bulb of the brain. However, whereas the mouse has multiple discrete band-like zones, the macaque appears to have only two broad zones. It is unclear whether the organization of OR inputs in a rodent/primate common ancestor degenerated in primates or, alternatively became more sophisticated in rodents. The mouse nose has an additional small family of chemosensory receptors, called trace amine-associated receptors (TAARs), which may detect social cues. Here we find that TAARs are also expressed in the macaque nose, suggesting that TAARs may also play a role in human olfactory perception. We further find that one human TAAR responds to rotten fish, suggesting a possible role as a sentinel to discourage ingestion of food harboring pathogenic microorganisms.


Assuntos
Macaca mulatta/fisiologia , Mucosa Olfatória/fisiologia , Receptores Odorantes/metabolismo , Olfato/fisiologia , Animais , Padronização Corporal/fisiologia , Masculino , Camundongos , Ratos , Receptores Acoplados a Proteínas G/metabolismo , Especificidade da Espécie , Distribuição Tecidual
14.
bioRxiv ; 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-38352494

RESUMO

Functional assays on intact tumor biopsies can potentially complement and extend genomics-based approaches for precision oncology, drug testing, and organs-on-chips cancer disease models by capturing key determinants of therapeutic response, such as tissue architecture, tumor heterogeneity, and the tumor microenvironment. Currently, most of these assays rely on fluorescent labeling, a semi-quantitative method best suited to be a single-time-point terminal assay or labor-intensive terminal immunostaining analysis. Here, we report integrated aptamer electrochemical sensors for on-chip, real-time monitoring of increases of cytochrome C, a cell death indicator, from intact microdissected tissues with high affinity and specificity. The platform features a multi-well sensor layout and a multiplexed electronic setup. The aptasensors measure increases in cytochrome C in the supernatant of mouse or human microdissected tumors after exposure to various drug treatments. Since the aptamer probe can be easily exchanged to recognize different targets, the platform could be adapted for multiplexed monitoring of various biomarkers, providing critical information on the tumor and its microenvironment. This approach could not only help develop more advanced cancer disease models but also apply to other complex in vitro disease models, such as organs-on-chips and organoids.

15.
Lab Chip ; 24(10): 2683-2699, 2024 May 14.
Artigo em Inglês | MEDLINE | ID: mdl-38651213

RESUMO

Cancer drug testing in animals is an extremely poor predictor of the drug's safety and efficacy observed in humans. Hence there is a pressing need for functional testing platforms that better predict traditional and immunotherapy responses in human, live tumor tissue or tissue constructs, and at the same time are compatible with the use of mouse tumor tissue to facilitate building more accurate disease models. Since many cancer drug actions rely on mechanisms that depend on the tumor microenvironment (TME), such platforms should also retain as much of the native TME as possible. Additionally, platforms based on miniaturization technologies are desirable to reduce animal use and sensitivity to human tissue scarcity. Present high-throughput testing platforms that have some of these features, e.g. based on patient-derived tumor organoids, require a growth step that alters the TME. On the other hand, microdissected tumors (µDTs) or "spheroids" that retain an intact TME have shown promising responses to immunomodulators acting on native immune cells. However, difficult tissue handling after microdissection has reduced the throughput of drug testing on µDTs, thereby constraining the inherent advantages of producing numerous TME-preserving units of tissue for drug testing. Here we demonstrate a microfluidic 96-well platform designed for drug treatment of hundreds of similarly-sized, cuboidal µDTs ("cuboids") produced from a single tumor sample. The platform organizes a monodisperse array of four cuboids per well in 384 hydrodynamic traps. The microfluidic device, entirely fabricated in thermoplastics, features 96 microvalves that fluidically isolate each well after the cuboid loading step for straightforward multi-drug testing. Since our platform makes the most of scarce tumor tissue, it can potentially be applied to human biopsies that preserve the human TME while minimizing animal testing.


Assuntos
Antineoplásicos , Ensaios de Seleção de Medicamentos Antitumorais , Dispositivos Lab-On-A-Chip , Humanos , Animais , Antineoplásicos/farmacologia , Ensaios de Seleção de Medicamentos Antitumorais/instrumentação , Camundongos , Microambiente Tumoral/efeitos dos fármacos , Técnicas Analíticas Microfluídicas/instrumentação , Desenho de Equipamento , Linhagem Celular Tumoral , Neoplasias/tratamento farmacológico
16.
bioRxiv ; 2024 Mar 27.
Artigo em Inglês | MEDLINE | ID: mdl-38586030

RESUMO

The small amount of human tissue available for testing is a paramount challenge in cancer drug development, cancer disease models, and personalized oncology. Technologies that combine the microscale manipulation of tissues with fluid handling offer the exciting possibility of miniaturizing and automating drug evaluation workflows. This approach minimizes animal testing and enables inexpensive, more efficient testing of samples with high clinical biomimicry using scarce materials. We have developed an inexpensive platform based on an off-the-shelf robot that can manipulate microdissected tissues (µDTs) into user-programmed positions without using intricate microfluidic designs nor any other accessories such as a microscope or a pneumatic controller. The robot integrates complex functions such as vision and fluid actuation by incorporating simple items including a USB camera and a rotary pump. Through the robot's camera, the platform software optically recognizes randomly-seeded µDTs on the surface of a petri dish and positions a mechanical arm above the µDTs. Then, a custom rotary pump actuated by one of the robot's motors generates enough microfluidic lift to hydrodynamically pick and place µDTs with a pipette at a safe distance from the substrate without requiring a proximity sensor. The platform's simple, integrated construction is cost-effective and compact, allowing placement inside a tissue culture hood for sterile workflows. The platform enables users to select µDTs based on their size, place them in user-programmed arrays, such as multi-well plates, and control various robot motion parameters. As a case application, we use the robotic system to conduct semi-automated drug testing of mouse and human µDTs in 384-well plates. Our user-friendly platform promises to democratize microscale tissue research to clinical and biological laboratories worldwide.

17.
J Acad Consult Liaison Psychiatry ; 65(2): 126-135, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38030078

RESUMO

BACKGROUND: Medically ill adults are at elevated risk for suicide. Chronic pain and hopelessness are associated with suicide; however, few studies have examined the interaction between chronic pain and hopelessness in predicting suicide risk among hospitalized adults. OBJECTIVE: This study aimed to describe the association between chronic pain, hopelessness, and suicide risk, defined as recent suicidal ideation or lifetime suicidal behavior. In addition, we examined the interaction between chronic pain and hopelessness. METHODS: This was a secondary analysis of a multisite study to validate the Ask Suicide-Screening Questions (ASQ) among adult medical inpatients. Participants reported if they experienced chronic pain that impacted daily life and if they felt hopeless about their medical condition and provided their current pain rating on a 1 to 10 scale, with 10 being the most severe pain. A t-test compared pain severity scores by ASQ outcome. A binary logistic regression model described the association between chronic pain, hopelessness, and suicide risk; parameter estimates are expressed as odds ratios (OR) for interpretation. The interaction between chronic pain and hopelessness was examined in both the transformed (logit) and natural (probability) scales of the generalized linear model. RESULTS: The sample included 720 participants (53.2% male, 62.4% White, mean age: 50.1 [16.3] years, range = 18-93). On the ASQ, 15.7% (113/720) of patients screened positive. Half (360/720) of the sample self-reported chronic pain. Individuals who screened positive had higher pain rating scores than those who screened negative (t = -4.2, df = 147.6, P < 0.001). Among all patients, 27.2% (196/720) felt hopeless about their medical condition. In the logistic regression model, patients with chronic pain (adjusted OR: 2.29, 95% confidence interval [CI]: 1.21-4.43, P = 0.01) or hopelessness (adjusted OR: 5.69, 95% CI: 2.52-12.64, P < 0.001) had greater odds of screening positive on the ASQ. The interaction effect between pain and hopelessness was not significant in the transformed (B = -0.15, 95% CI: -1.11 to 0.82, P = 0.76) or natural (B = 0.08, 95% CI: -0.07 to 0.23, P = 0.28) scale. CONCLUSIONS: There were significant independent associations between (1) chronic pain and suicide risk and between (2) hopelessness and suicide risk. Future research should examine the temporality and mechanisms underlying these relationships to inform prevention efforts for medically ill adults.

18.
bioRxiv ; 2024 Mar 27.
Artigo em Inglês | MEDLINE | ID: mdl-38585935

RESUMO

Present cancer disease models - typically based on cell cultures and animal models that lack the human tumor microenvironment (TME) - are extremely poor predictors of human disease outcomes. Microscale cancer models that combine the micromanipulation of tissues and fluids offer the exciting possibility of miniaturizing the drug testing workflow, enabling inexpensive, more efficient tests of high clinical biomimicry that maximize the use of scarce human tissue and minimize animal testing. Critically, these microscale models allow for precisely addressing the impact of the structural features of the heterogeneous TME to properly target and understand the contributions of these unique zones to therapeutic response. We have recently developed a precision slicing method that yields large numbers of cuboidal micro-tissues ("cuboids", ∼ (400 µm) 3 ) from a single tumor biopsy. Here we evaluate cuboids from syngeneic mouse tumor models and human tumors, which contain native immune cells, as models for drug and immunotherapy evaluation. We characterize relevant TME parameters, such as their cellular architecture (immune cells and vasculature), cytokine secretion, proteomics profiles, and their response to drug panels in multi-well arrays. Despite the cutting procedure and the time spent in culture (up to 7 days), the cuboids display strong functional responses such as cytokine and drug responses. Overall, our results suggest that cuboids make an excellent model for applications that require the TME, such as immunotherapy drug evaluations, including for clinical trials and personalized oncology approaches.

19.
Psychosomatics ; 54(3): 239-47, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23398908

RESUMO

BACKGROUND: Suicide in hospital settings is a frequently reported sentinel event to the Joint Commission (JC). Since 1995, over 1,000 inpatient deaths by suicide have been reported to the JC; 25% occurred in non-behavioral health settings. Lack of proper "assessment" was the leading root cause for 80% of hospital suicides. This paper describes the "Ask Suicide-Screening Questions to Everyone in Medical Settings (asQ'em)" Quality Improvement Project. We aimed to pilot a suicide screening tool and determine feasibility of screening in terms of prevalence, impact on unit workflow, impact on mental health resources, and patient/nurse acceptance. METHODS: We piloted the asQ'em two-item screening instrument that assesses suicidal thoughts and behaviors, designed specifically for nurses to administer to medical patients. Educational in-services were conducted. A convenience sample of adult patients, 18 years or older, from three selected inpatient units in the National Institutes of Health Clinical Center, participated. RESULTS: A total of 331 patients were screened; 13 (4%) patients screened "positive" for suicide risk and received further evaluation. No patient had acute suicidal thoughts or required an observational monitor. Screening took approximately 2 minutes; 87% of patients reported feeling comfortable with screening; 81% of patients, 75% of nurses, and 100% of social workers agreed that all patients in hospitals should be screened for suicide risk. DISCUSSION: Nurses can feasibly screen hospitalized medical/surgical patients for suicide risk with a two-item screening instrument. Patients, nurses, and social workers rated their experience of screening as positive and supported the idea of universal suicide screening in the hospital.


Assuntos
Hospitais , Programas de Rastreamento/enfermagem , Segurança do Paciente/normas , Melhoria de Qualidade , Prevenção do Suicídio , Inquéritos e Questionários , Adolescente , Adulto , Idoso , Atitude do Pessoal de Saúde , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Avaliação em Enfermagem/métodos , Admissão do Paciente , Satisfação do Paciente , Projetos Piloto , Fatores de Risco , Serviço Social , Ideação Suicida , Suicídio/psicologia , Suicídio/estatística & dados numéricos , Adulto Jovem
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