Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 25
Filtrar
1.
Nurse Educ Today ; 138: 106184, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38537594

RESUMO

BACKGROUND: Nursing and Allied Health Profession (NAHP) students undertake clinical placements as part of their pre-registration training. The remote nature of some placement sites, shiftwork and the emotionally challenging nature of the workload has led to mental wellbeing issues in many students. AIM: This project aimed to evaluate a novel 3D immersive virtual reality environment that supports mental wellbeing for NAHP students on clinical placement. It comprises a calming 3D tropical beach environment where students and tutors can meet for reflection and mutual support. DESIGN: A multi-methods design gathered quantitative impact data with validated measurement tools and qualitative output related to the lived experience of students. SETTINGS AND PARTICIPANTS: All 600 pre-registration NAHP students within the institution undertaking clinical placements were invited to participate, irrespective of mental wellbeing status. Students were randomly assigned to either a VR or Conventional cohort; all participants received the control support mechanism in a subsequent placement. METHODS: All participants completed an initial demographic and Readiness for Therapy survey followed by weekly Beck Anxiety and Depression Inventories during placement. All participants were invited to a semi-structured interview. RESULTS: Overall, 32 participants engaged with the application; although the VR cohort demonstrated improved scores on both Beck inventories, these were not statistically significant. This is probably due to the low response rate for the control cohort. A total of 15 interviews were conducted and several themes emerged from the data in relation. to both experiential outcomes (escapism, anonymity and sense of community) and instrumental outcomes (calming, mindfulness and combatting loneliness). CONCLUSIONS: User feedback indicates that a VR environment can provide a calming escape from the pressures and anxiety arising from clinical placement for healthcare students. The relaxing beach environment facilitated mindfulness meditation and the additional opportunities for pseudo-anonymous interactions with peers and tutors were wellreceived by students.


Assuntos
Estudantes de Enfermagem , Realidade Virtual , Humanos , Estudantes de Enfermagem/psicologia , Feminino , Masculino , Inquéritos e Questionários , Adulto , Saúde Mental , Bacharelado em Enfermagem/métodos , Adulto Jovem , Ansiedade/psicologia
2.
JAMA Neurol ; 81(1): 19-29, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-37983058

RESUMO

Importance: The association of fetal exposure to antiseizure medications (ASMs) with outcomes in childhood are not well delineated. Objective: To examine the association of fetal ASM exposure with subsequent adaptive, behavioral or emotional, and neurodevelopmental disorder outcomes at 2, 3, and 4.5 years of age. Design, Setting, and Participants: The Maternal Outcomes and Neurodevelopmental Effects of Antiepileptic Drugs (MONEAD) study is a prospective, observational cohort study conducted at 20 epilepsy centers in the US. A total of 456 pregnant women with epilepsy or without epilepsy were enrolled from December 19, 2012, to January 13, 2016. Children of enrolled women were followed up with formal assessments at 2, 3, 4.5, and 6 years of age. Statistical analysis took place from August 2022 to May 2023. Exposures: Exposures included mother's epilepsy status as well as mother's ASM blood concentration in the third trimester (for children of women with epilepsy). Women with epilepsy were enrolled regardless of ASM regimen. Main Outcomes and Measures: The primary outcome was the Adaptive Behavior Assessment System, Third Edition (ABAS-3) General Adaptive Composite (GAC) score among children at 4.5 years of age. Children of women with epilepsy and children of women without epilepsy were compared, and the associations of ASM exposures with outcomes among exposed children were assessed. Secondary outcomes involved similar analyses of other related measures. Results: Primary analysis included 302 children of women with epilepsy (143 boys [47.4%]) and 84 children of women without epilepsy (45 boys [53.6%]). Overall adaptive functioning (ABAS-3 GAC score at 4.5 years) did not significantly differ between children of women with epilepsy and children of women without epilepsy (parameter estimate [PE], 0.4 [95% CI, -2.5 to 3.4]; P = .77). However, in adjusted analyses, a significant decrease in functioning was seen with increasing third-trimester maximum ASM blood concentrations (PE, -7.8 [95% CI, -12.6 to -3.1]; P = .001). This decrease in functioning was evident for levetiracetam (PE, -18.9 [95% CI, -26.8 to -10.9]; P < .001) and lamotrigine (PE, -12.0 [95% CI, -23.7 to -0.3]; P = .04), the ASMs with sample sizes large enough for analysis. Results were similar with third-trimester maximum daily dose. Conclusions and Relevance: This study suggests that adaptive functioning of children of women with epilepsy taking commonly used ASMs did not significantly differ from that of children of women without epilepsy, but there was an exposure-dependent association of ASMs with functioning. Thus, psychiatric or psychological screening and referral of women with epilepsy and their offspring are recommended when appropriate. Additional research is needed to confirm these findings.


Assuntos
Epilepsia , Transtornos do Neurodesenvolvimento , Efeitos Tardios da Exposição Pré-Natal , Criança , Masculino , Feminino , Humanos , Gravidez , Estudos Prospectivos , Efeitos Tardios da Exposição Pré-Natal/induzido quimicamente , Efeitos Tardios da Exposição Pré-Natal/epidemiologia , Epilepsia/tratamento farmacológico , Anticonvulsivantes/efeitos adversos , Transtornos do Neurodesenvolvimento/epidemiologia , Transtornos do Neurodesenvolvimento/etiologia
3.
bioRxiv ; 2023 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-37961421

RESUMO

Flow cytometry is a powerful technology for high-throughput protein quantification at the single-cell level, widely used in basic research and routine clinical diagnostics. Traditionally, data analysis is carried out using manual gating, in which cut-offs are defined manually for each marker. Recent technical advances, including the introduction of mass cytometry, have increased the number of proteins that can be simultaneously assessed in each cell. To tackle the resulting escalation in data complexity, numerous new analysis algorithms have been developed. However, many of these show limitations in terms of providing statistical testing, data sharing, cross-experiment comparability integration with clinical data. We developed MetaGate as a platform for interactive statistical analysis and visualization of manually gated high-dimensional cytometry data with integration of clinical meta data. MetaGate allows manual gating to take place in traditional cytometry analysis software, while providing a combinatorial gating system for simple and transparent definition of biologically relevant cell populations. We demonstrate the utility of MetaGate through a comprehensive analysis of peripheral blood immune cells from 28 patients with diffuse large B-cell lymphoma (DLBCL) along with 17 age- and sex-matched healthy controls using two mass cytometry panels made of a total of 55 phenotypic markers. In a two-step process, raw data from 143 FCS files is first condensed through a data reduction algorithm and combined with information from manual gates, user-defined cellular populations and clinical meta data. This results in one single small project file containing all relevant information to allow rapid statistical calculation and visualization of any desired comparison, including box plots, heatmaps and volcano plots. Our detailed characterization of the peripheral blood immune cell repertoire in patients with DLBCL corroborate previous reports showing expansion of monocytic myeloid-derived suppressor cells, as well as an inverse correlation between NK cell numbers and disease progression.

4.
Neurology ; 101(22): e2266-e2276, 2023 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-37816636

RESUMO

BACKGROUND AND OBJECTIVES: Breastfeeding has important health benefits for both mother and child. We characterize breastfeeding initiation and duration in mothers with epilepsy relative to control mothers in a large prospective cohort. METHODS: The Maternal Outcomes and Neurodevelopmental Effects of Antiepileptic Drugs study is a prospective, multicenter observational, US cohort study. Pregnant individuals with and without epilepsy, aged 14-45 years, were enrolled between December 19, 2012, and February 11, 2016. Exclusion criteria included intelligence quotient (IQ) <70, and gestational age >20 weeks at enrollment. Breastfeeding was assessed through electronic diary and at study visits until 2 years postpartum. Odds of initiating breastfeeding was compared between cohorts using unadjusted and adjusted logistic regression models. Duration of breastfeeding was compared between cohorts using the log-rank test. RESULTS: Three hundred fifty-one pregnant individuals with epilepsy and 105 pregnant controls were enrolled. Breastfeeding data were available for 325 mothers with epilepsy and 98 controls. Study cohorts were similar demographically except race (p = 0.008); 84.9% of mothers with epilepsy and 71.4% of controls were White. The mean IQ was lower in mothers with epilepsy compared with that in controls (97.7 vs 104.2, p < 0.001). Breastfeeding was initiated by 74.8% mothers with epilepsy and 88.8% controls; this difference was significant in unadjusted logistic regression (odds ratio [OR] 0.4 [95% CI 0.2, 0.7], p = 0.004), but not in adjusted model (OR 0.5 [95% CI 0.2, 1.0], p = 0.051). Factors associated with breastfeeding were higher maternal education and IQ. There was no difference in duration of breastfeeding between mothers with and without epilepsy (median duration 8.5 months vs 9.9 months, p = 0.793). Among mothers with epilepsy, both convulsive seizures and all seizures that impair awareness during pregnancy were associated with lower breastfeeding initiation (OR 0.4 [95% CI 0.2, 0.8], p = 0.013) and (OR 0.4 [95% CI 0.2, 0.8], p = 0.003, respectively). Any peripartum seizures were associated with shorter breastfeeding duration (median 6 months vs 9.7 months, [p = 0.040]). DISCUSSION: Mothers with epilepsy were less likely to initiate breastfeeding compared with controls; however, this difference was not significant when controlling for maternal IQ and education level. Continuation of breastfeeding once initiated was not different between mothers with and without epilepsy. Seizure control was associated with breastfeeding initiation and duration in mothers with epilepsy. TRIAL REGISTRATION INFORMATION: ClinicalTrials.gov identifier NCT01730170.


Assuntos
Anticonvulsivantes , Epilepsia , Feminino , Humanos , Gravidez , Anticonvulsivantes/efeitos adversos , Aleitamento Materno , Estudos de Coortes , Epilepsia/tratamento farmacológico , Mães , Estudos Prospectivos , Convulsões/tratamento farmacológico , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade
5.
EBioMedicine ; 96: 104811, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37741009

RESUMO

BACKGROUND: Natural killer (NK) cells have a unique capability of spontaneous cytotoxicity against malignant cells and hold promise for off-the-shelf cell therapy against cancer. One of the key challenges in the field is to improve NK cell homing to solid tumors. METHODS: To gain a deeper understanding of the cellular mechanisms regulating trafficking of NK cells into the tumor, we used high-dimensional flow cytometry, mass cytometry, and single-cell RNA-sequencing combined with functional assays, creating a comprehensive map of human NK cell migration phenotypes. FINDINGS: We found that the chemokine receptor repertoire of peripheral blood NK cells changes in a coordinated manner becoming progressively more diversified during NK cell differentiation and correlating tightly with the migratory response of the distinct NK cell subsets. Simultaneous ligation of CXCR1/2 and CX3CR1, synergistically potentiated the migratory response of NK cells. Analysis of 9471 solid cancers from publicly available TCGA/TARGET repositories revealed dominant chemokine patterns that varied across tumor types but with no tumor group expressing ligands for more than one chemokine receptor present on mature NK cells. INTERPRETATION: The finding that chemokine stimulation can elicit a synergistic migratory response in NK cells combined with the identified lack of naturally occurring pairs of chemokines-chemokine receptors in human cancers may explain the systematic exclusion of NK cells from the tumor microenvironment and provides a basis for engineering next-generation NK cell therapies against malignancies. FUNDING: The Polish Ministry of Science and Higher Education, the National Science Centre, Poland, The Norwegian Cancer Society, the Norwegian Research Council, the South-Eastern Norway Regional Health Authority, The Swedish Cancer Society, the Swedish Children's Cancer Foundation, The Swedish Research Council, The Center of Excellence: Precision Immunotherapy Alliance, Knut and Alice Wallenberg Foundation and National Cancer Institute.


Assuntos
Neoplasias , Receptores de Quimiocinas , Criança , Humanos , Receptores de Quimiocinas/genética , Receptores de Quimiocinas/metabolismo , Células Matadoras Naturais/metabolismo , Neoplasias/patologia , Quimiocinas/metabolismo , Imunoterapia Adotiva , Microambiente Tumoral
6.
Lancet Neurol ; 22(8): 712-722, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37479375

RESUMO

BACKGROUND: The neurodevelopmental effects of fetal exposure to most antiseizure medications are unclear. We aimed to investigate the effects of fetal exposure to commonly used antiseizure medications on neuropsychological outcomes at age 3 years. METHODS: The Maternal Outcomes and Neurodevelopmental Effects of Antiepileptic Drugs (MONEAD) study is a prospective, observational, multicentre cohort study at 20 specialty epilepsy centres in the USA. We have investigated pregnancy outcomes in women (aged 14-45 years) with and without epilepsy who were enrolled during pregnancy (≤20 weeks' gestational age), and their children. The primary outcome for children at age 3 years was a blindly assessed Verbal Index score, which was calculated by averaging scores on the Naming Vocabulary and Verbal Comprehension subtests of Differential Ability Scales-II, Expressive Communication and Auditory Comprehension subscales of Preschool Language Scale-5, and Peabody Picture Vocabulary Test-4. Children of women with and without epilepsy were compared, and the associations of medication exposures to outcomes in exposed children were assessed. The MONEAD study is registered with ClinicalTrials.gov, NCT0730170, and is ongoing. FINDINGS: Between Dec 19, 2012, and Jan 13, 2016, 456 pregnant women (351 with epilepsy and 105 without epilepsy) were enrolled into the study. 345 children were born to women with epilepsy and 106 children were born to women without epilepsy. Verbal Index scores at age 3 years did not differ for children of women with epilepsy (n=284; adjusted least-square mean 102·7, 95% CI 101·4 to 103·9) versus those without epilepsy (n=87; 102·3, 99·8 to 104·7). Significant risk factors for reduced Verbal Index scores included maternal intelligence quotient, maternal education, post-birth anxiety, gestational age at enrolment, child's sex, and child's ethnicity. For Verbal Index scores, antiseizure medication exposure effects were not seen for maximum third trimester blood concentrations (n=258; adjusted parameter estimate -2·9, 95% CI -6·7 to 1·0). However, in secondary analyses, exposure-dependent effects were present on multiple cognitive measures, which varied by medication. INTERPRETATION: We found no difference in neurodevelopmental outcomes between children with fetal exposure to newer antiseizure medications compared with unexposed children. However, some exposure-dependent antiseizure medication effects were seen in secondary analyses. The adverse effects of maternal post-birth anxiety emphasise the importance of screening mothers during pregnancy and postpartum and implementing interventions. Additional studies are needed to clarify the exposure-dependent effects. FUNDING: National Institutes of Health, National Institute of Neurological Disorders and Stroke, and National Institute of Child Health and Development.


Assuntos
Epilepsia , Efeitos Tardios da Exposição Pré-Natal , Pré-Escolar , Criança , Humanos , Feminino , Gravidez , Anticonvulsivantes/efeitos adversos , Estudos de Coortes , Estudos Prospectivos , Epilepsia/tratamento farmacológico , Cognição , Efeitos Tardios da Exposição Pré-Natal/induzido quimicamente , Efeitos Tardios da Exposição Pré-Natal/tratamento farmacológico
7.
Emerg Med J ; 40(5): 361-368, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-36653159

RESUMO

BACKGROUND: Temporary lower limb immobilisation following injury is a risk factor for symptomatic venous thromboembolism (VTE). Pharmacological thromboprophylaxis can mitigate this risk but it is unclear which patients benefit from this intervention. The Aberdeen VTE risk tool was developed to tailor thromboprophylaxis decisions in these patients and this evaluation aimed to describe its performance in clinical practice. Secondarily, diagnostic metrics were compared with other risk assessment methods (RAMs). METHODS: A prospective cohort service evaluation was conducted. Adult patients (≥16 years) managed with lower limb immobilisation for injury who were evaluated with the Aberdeen VTE risk tool prior to discharge from the ED were identified contemporaneously between February 2014 and December 2020. Electronic patient records were scrutinised up to 3 months after removal of immobilisation for the development of symptomatic VTE or sudden death due to pulmonary embolism (PE). Other RAMs, including the Thrombosis Risk Prediction for Patients with cast immobilisation (TRiP(cast)) and Plymouth scores, were assimilated retrospectively and diagnostic performance compared. RESULTS: Of 1763 patients (mean age 46 (SD 18) years, 51% women), 15 (0.85%, 95% CI 0.52% to 1.40%) suffered a symptomatic VTE or death due to PE. The Aberdeen VTE tool identified 1053 (59.7%) patients for thromboprophylaxis with a sensitivity of 80.0% (95% CI 54.8% to 93.0%) and specificity of 40.4% (95% CI 38.1% to 42.6%) for the primary outcome. In 1695 patients, fewer were identified as high risk by the TRiP(cast) (33.3%) and Plymouth (24.4%) scores, but with greater specificity, 67.0% and 75.6%, respectively, than dichotomous RAMs, including the Aberdeen VTE tool. CONCLUSION: Routine use of the Aberdeen VTE tool in our population resulted in an incidence of symptomatic VTE of less than 1%. Ordinal RAMs, such as the TRiP(cast) score, may more accurately reflect VTE risk and permit more individually tailored thromboprophylaxis decisions but prospective comparison is needed.


Assuntos
Embolia Pulmonar , Tromboembolia Venosa , Humanos , Feminino , Masculino , Tromboembolia Venosa/epidemiologia , Tromboembolia Venosa/etiologia , Tromboembolia Venosa/prevenção & controle , Anticoagulantes/uso terapêutico , Estudos Retrospectivos , Embolia Pulmonar/epidemiologia , Embolia Pulmonar/etiologia , Extremidade Inferior , Fatores de Risco
8.
J Immunother Cancer ; 10(11)2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36319065

RESUMO

BACKGROUND: Natural killer (NK) cells hold great promise as a source for allogeneic cell therapy against hematological malignancies, including acute myeloid leukemia (AML). Current treatments are hampered by variability in NK cell subset responses, a limitation which could be circumvented by specific expansion of highly potent single killer immunoglobulin-like receptor (KIR)+NKG2C+ adaptive NK cells to maximize missing-self reactivity. METHODS: We developed a GMP-compliant protocol to expand adaptive NK cells from cryopreserved cells derived from select third-party superdonors, that is, donors harboring large adaptive NK cell subsets with desired KIR specificities at baseline. We studied the adaptive state of the cell product (ADAPT-NK) by flow cytometry and mass cytometry as well as cellular indexing of transcriptomes and epitopes by sequencing (CITE-Seq). We investigated the functional responses of ADAPT-NK cells against a wide range of tumor target cell lines and primary AML samples using flow cytometry and IncuCyte as well as in a mouse model of AML. RESULTS: ADAPT-NK cells were >90% pure with a homogeneous expression of a single self-HLA specific KIR and expanded a median of 470-fold. The ADAPT-NK cells largely retained their adaptive transcriptional signature with activation of effector programs without signs of exhaustion. ADAPT-NK cells showed high degranulation capacity and efficient killing of HLA-C/KIR mismatched tumor cell lines as well as primary leukemic blasts from AML patients. Finally, the expanded adaptive NK cells had preserved robust antibody-dependent cellular cytotoxicity potential and combination of ADAPT-NK cells with an anti-CD16/IL-15/anti-CD33 tri-specific engager led to near-complete killing of resistant CD45dim blast subtypes. CONCLUSIONS: These preclinical data demonstrate the feasibility of off-the-shelf therapy with a non-engineered, yet highly specific, NK cell population with full missing-self recognition capability.


Assuntos
Citotoxicidade Imunológica , Leucemia Mieloide Aguda , Animais , Camundongos , Citotoxicidade Celular Dependente de Anticorpos , Células Matadoras Naturais/metabolismo , Leucemia Mieloide Aguda/patologia , Receptores KIR/metabolismo
9.
Med ; 2(2): 180-195.e5, 2021 02 12.
Artigo em Inglês | MEDLINE | ID: mdl-35590201

RESUMO

BACKGROUND: Current prognostic variables can only partly explain the large outcome heterogeneity in diffuse large B cell lymphoma (DLBCL). We aimed to investigate the utility of systems-level protein and immune repertoire profiling for outcome prognostication in DLBCL. METHODS: In this retrospective study, we used proximity extension assay technology to quantify 81 immune-related proteins in serum or plasma in 2 independent cohorts in a total 111 DLBCL patients. Protein levels were assessed before and after treatment with rituximab and chemotherapy, and the patients were compared with 19 age- and sex-matched healthy blood donors. In a subset of the patients, we performed a broad mass cytometric characterization of immune cell repertoires in peripheral blood. FINDINGS: Patients displayed large deviations in protein profiles compared with healthy controls. Development of a systemic protein deviation (SPD) score provided a 4-protein-based metric that reflected the overall degree of protein deviations compared with age- and sex-matched healthy blood donors. The SPD score identified patients with very poor overall survival in both cohorts and correlated with increased frequencies of peripheral blood PD-1+ CD8+ T cells, and expansion of myeloid-derived suppressor cells. CONCLUSIONS: Our results show that a simple metric based on measurement of a small set of serum or plasma proteins can be used to probe systemic immune changes associated with poor survival in DLBCL. This finding warrants further investigation in larger, prospective studies to establish a clinical prognostic biomarker.


Assuntos
Linfoma Difuso de Grandes Células B , Receptor de Morte Celular Programada 1 , Biomarcadores , Linfócitos T CD8-Positivos/patologia , Humanos , Linfoma Difuso de Grandes Células B/tratamento farmacológico , Estudos Prospectivos , Estudos Retrospectivos
10.
Front Immunol ; 11: 561553, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33178188

RESUMO

Natural killer (NK) cells derived or isolated from different sources have been gaining in importance for cancer therapies. In this study, we evaluate and compare key characteristics between NK cells derived or isolated from umbilical cord blood, umbilical cord blood hematopoietic stem/progenitor cells, peripheral blood, and induced pluripotent stem cells (iPSCs). Specifically, we find CD56+ NK cells isolated and expanded directly from umbilical cord blood (UCB56) and NK cells derived from CD34+ hematopoietic stem/progenitors in umbilical cord blood (UCB34) differ in their expression of markers associated with differentiation including CD16, CD2, and killer Ig-like receptors (KIRs). UCB56-NK cells also displayed a more potent cytotoxicity compared to UCB34-NK cells. NK cells derived from iPSCs (iPSC-NK cells) were found to have variable KIR expression, with certain iPSC-NK cell populations expressing high levels of KIRs and others not expressing KIRs. Notably, KIR expression on UCB56 and iPSC-NK cells had limited effect on cytotoxic activity when stimulated by tumor target cells that express high levels of cognate HLA class I, suggesting that in vitro differentiation and expansion may override the KIR-HLA class I mediated inhibition when used across HLA barriers. Together our results give a better understanding of the cell surface receptor, transcriptional, and functional differences between NK cells present in umbilical cord blood and hematopoietic progenitor-derived NK cells which may prove important in selecting the most active NK cell populations for treatment of cancer or other therapies.


Assuntos
Diferenciação Celular/imunologia , Sangue Fetal/citologia , Células-Tronco Hematopoéticas/imunologia , Células-Tronco Pluripotentes Induzidas/citologia , Células Matadoras Naturais/imunologia , Neuroblastoma/imunologia , Receptores KIR/imunologia , Diferenciação Celular/genética , Linhagem Celular Tumoral , Sobrevivência Celular/imunologia , Genótipo , Antígenos HLA/genética , Antígenos HLA/imunologia , Antígenos de Histocompatibilidade Classe I/genética , Antígenos de Histocompatibilidade Classe I/imunologia , Humanos , Neuroblastoma/patologia , Receptores KIR/genética , Transfecção
11.
Cell Stem Cell ; 27(2): 224-237.e6, 2020 08 06.
Artigo em Inglês | MEDLINE | ID: mdl-32531207

RESUMO

Cytokine-inducible SH2-containing protein (CIS; encoded by the gene CISH) is a key negative regulator of interleukin-15 (IL-15) signaling in natural killer (NK) cells. Here, we develop human CISH-knockout (CISH-/-) NK cells using an induced pluripotent stem cell-derived NK cell (iPSC-NK cell) platform. CISH-/- iPSC-NK cells demonstrate increased IL-15-mediated JAK-STAT signaling activity. Consequently, CISH-/- iPSC-NK cells exhibit improved expansion and increased cytotoxic activity against multiple tumor cell lines when maintained at low cytokine concentrations. CISH-/- iPSC-NK cells display significantly increased in vivo persistence and inhibition of tumor progression in a leukemia xenograft model. Mechanistically, CISH-/- iPSC-NK cells display improved metabolic fitness characterized by increased basal glycolysis, glycolytic capacity, maximal mitochondrial respiration, ATP-linked respiration, and spare respiration capacity mediated by mammalian target of rapamycin (mTOR) signaling that directly contributes to enhanced NK cell function. Together, these studies demonstrate that CIS plays a key role to regulate human NK cell metabolic activity and thereby modulate anti-tumor activity.


Assuntos
Células-Tronco Pluripotentes Induzidas , Linhagem Celular Tumoral , Citocinas , Humanos , Interleucina-15 , Células Matadoras Naturais
12.
J Correct Health Care ; 26(2): 168-182, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32390543

RESUMO

Identification of serious mental illness (SMI) among those entering jail is the first step in diversion or appropriate services in jail. Although best practices guidelines for identifying SMI exist, many jails do not employ these standards. Researchers describe identification of SMI in the "practice as usual" and compare/contrast the results with a validated screening instrument for 2,961 individuals across eight jails. Overall, 20% scored positive on the screening instrument, and staff identification yielded an additional 16%. While the instrument was consistent in identifying the proportion of persons with SMI across each county (16% to 22%), the proportion identified by jail staff varied greatly (3% to 33%). Moreover, referral to-and receipt of-subsequent services for the staff-identified individuals varied greatly, leading to recommendations for improved processes.


Assuntos
Programas de Rastreamento , Transtornos Mentais/diagnóstico , Serviços de Saúde Mental , Prisioneiros , Prisões , Encaminhamento e Consulta , Adulto , Feminino , Humanos , Masculino , Índice de Gravidade de Doença
13.
J Subst Abuse Treat ; 108: 104-114, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31285078

RESUMO

Given the interrelated nature of opioid use, criminal justice interaction, and mental health issues, the current opioid crisis has created an urgent need for treatment, including medication assisted treatment, among justice-involved populations. Implementation research plays an important role in improving systems of care and integration of evidence-based practices within and outside of criminal justice institutions. The current study is a formative qualitative evaluation of the implementation of a cross-system (corrections and community-based) opioid use treatment initiative supported by Opioid State Targeted Response (STR) funding. The purpose of the study is to assess the fit of the Consolidated Framework for Implementation Research (CFIR) to a cross-system initiative, and to identify key barriers and facilitators to implementation. The process evaluation showed that adaptability of the clinical model and staff flexibility were critical to implementation. Cultural and procedural differences across correctional facilities and community-based treatment programs required frequent and structured forums for cross-system communication. Challenges related to recruitment and enrollment, staffing, MAT, and data collection were addressed through the collaborative development and continuous review of policies and procedures. This study found CFIR to be a useful framework for understanding implementation uptake and barriers. The framework was particularly valuable in reinforcing the use of implementation research as a means for continuous process improvement. CFIR is a comprehensive and flexible framework that may be adopted in future cross-system evaluations.


Assuntos
Centros Comunitários de Saúde/organização & administração , Acessibilidade aos Serviços de Saúde/organização & administração , Ciência da Implementação , Transtornos Relacionados ao Uso de Opioides/reabilitação , Prisioneiros/psicologia , Prisões , Direito Penal , Humanos , Transtornos Mentais/terapia , Pesquisa Qualitativa
14.
J Vet Med Educ ; 47(3): 327-332, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31194632

RESUMO

Veterinary students experience high levels of psychological distress including anxiety, stress, perceived stress and depression. The inability to cope with the demands of veterinary training has personal and professional consequences. Existing evidence shows that mindfulness-based interventions (MBI) can reduce stress in students, but more research on how MBIs are introduced into the veterinary curriculum is required. The first aim of the pilot study was to design and deliver a bespoke MBI to third-year veterinary students at the University of Liverpool Institute of Veterinary Science. The second aim was to gain feedback from those taking part, thus using their experiences to explore the challenges of introducing an MBI into a veterinary curriculum. By doing this, we aim to reflect and learn for future interventions. Qualitative feedback provided by participants of the MBI focus group was analyzed using thematic analysis and organized into two main themes: (1) "Taking Part in the MBI and Beyond-What it Was Like and What Has the MBI Done for Me?" and (2) "Mindfulness for Veterinary Students-Reflections, Challenges, and Making it Happen." Experiences and outcomes of the MBI were positive. However, implementation into the veterinary curriculum was found to be challenging. This pilot study provides clear recommendations to support the future integration and delivery of MBIs into a veterinary curriculum.


Assuntos
Educação em Veterinária , Atenção Plena , Animais , Ansiedade , Aprendizagem , Projetos Piloto
15.
Psychol Health ; 34(8): 901-921, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-30939933

RESUMO

Objective: Oesophageal cancer is an increasingly prevalent disease with a demanding post-curative treatment recovery period and sustained longer-term effects. Although post-curative treatment is a key transitionary period, the process of psychological adjustment for the individual is under-researched which limits the evidence base to inform supportive care. The aim of this study was to understand the process of adjustment for oesophageal cancer patients post-curative treatment, in particular the beliefs participants hold regarding their condition and how these are appraised against their experience. Design: Serial interviews were undertaken with six oesophageal cancer patients who have recently completed curative treatment, at baseline and at 6-month follow-up using interpretative phenomenological analysis. Results: The findings demonstrate an effortful process of adjustment, including recognising and accepting a changed self, fostering control beliefs over the course of the illness and physical sequelae, searching for meaning, developing illness coherence and moving away from self-blame. Conclusions: This study is the first to utilise a longitudinal qualitative design in oesophageal cancer, and provides an understanding of post-treatment adjustment over time for this clinical population through which to inform clinical practice and service development.


Assuntos
Ajustamento Emocional , Neoplasias Esofágicas/psicologia , Adulto , Idoso , Neoplasias Esofágicas/cirurgia , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Pesquisa Qualitativa
16.
Cancer Immunol Res ; 6(4): 467-480, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-29459477

RESUMO

Natural killer (NK) cells hold potential as a source of allogeneic cytotoxic effector cells for chimeric antigen receptor (CAR)-mediated therapies. Here, we explored the feasibility of transfecting CAR-encoding mRNA into primary NK cells and investigated how the intrinsic potential of discrete NK-cell subsets affects retargeting efficiency. After screening five second- and third-generation anti-CD19 CAR constructs with different signaling domains and spacer regions, a third-generation CAR with the CH2-domain removed was selected based on its expression and functional profiles. Kinetics experiments revealed that CAR expression was optimal after 3 days of IL15 stimulation prior to transfection, consistently achieving over 80% expression. CAR-engineered NK cells acquired increased degranulation toward CD19+ targets, and maintained their intrinsic degranulation response toward CD19- K562 cells. The response of redirected NK-cell subsets against CD19+ targets was dependent on their intrinsic thresholds for activation determined through both differentiation and education by killer cell immunoglobulin-like receptors (KIR) and/or CD94/NKG2A binding to self HLA class I and HLA-E, respectively. Redirected primary NK cells were insensitive to inhibition through NKG2A/HLA-E interactions but remained sensitive to inhibition through KIR depending on the amount of HLA class I expressed on target cells. Adaptive NK cells, expressing NKG2C, CD57, and self-HLA-specific KIR(s), displayed superior ability to kill CD19+, HLA low, or mismatched tumor cells. These findings support the feasibility of primary allogeneic NK cells for CAR engineering and highlight a need to consider NK-cell diversity when optimizing efficacy of cancer immunotherapies based on CAR-expressing NK cells. Cancer Immunol Res; 6(4); 467-80. ©2018 AACR.


Assuntos
Células Matadoras Naturais/imunologia , Células Matadoras Naturais/metabolismo , Subpopulações de Linfócitos/imunologia , Subpopulações de Linfócitos/metabolismo , Receptores de Antígenos de Linfócitos T/metabolismo , Receptores de Antígenos Quiméricos/metabolismo , Animais , Antígenos de Neoplasias/genética , Antígenos de Neoplasias/imunologia , Linhagem Celular Tumoral , Citotoxicidade Imunológica , Eletroporação , Expressão Gênica , Antígenos HLA/genética , Antígenos HLA/imunologia , Humanos , Ativação Linfocitária/imunologia , Camundongos , Subfamília C de Receptores Semelhantes a Lectina de Células NK/antagonistas & inibidores , Receptores de Antígenos de Linfócitos T/genética , Receptores de Antígenos Quiméricos/genética , Receptores KIR/antagonistas & inibidores
17.
Hepatol Commun ; 2(1): 35-47, 2018 01.
Artigo em Inglês | MEDLINE | ID: mdl-29404511

RESUMO

Exenatide, a glucagon-like peptide-1 receptor agonist, induces insulin secretion. Its role in insulin clearance has not been adequately examined. Carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) promotes hepatic insulin clearance to maintain insulin sensitivity. Feeding C57BL/6J mice a high-fat diet down-regulates hepatic Ceacam1 transcription to cause hyperinsulinemia, insulin resistance, and hepatic steatosis, as in Ceacam1 null mice (Cc1-/- ). Thus, we tested whether exenatide regulates Ceacam1 expression in high-fat diet-fed mice and whether this contributes to its insulin sensitizing effect. Exenatide (100 nM) induced the transcriptional activity of wild-type Ceacam1 promoter but not the constructs harboring block mutations of peroxisome proliferator-activated receptor response element and retinoid X receptor alpha, individually or collectively, in HepG2 human hepatoma cells. Chromatin immunoprecipitation analysis demonstrated binding of peroxisome proliferator-activated receptor gamma to Ceacam1 promoter in response to rosiglitazone and exenatide. Consistently, exenatide induced Ceacam1 messenger RNA expression within 12 hours in the absence but not in the presence of the glucagon-like peptide-1 receptor antagonist exendin 9-39. Exenatide (20 ng/g body weight once daily intraperitoneal injection in the last 30 days of feeding) restored hepatic Ceacam1 expression and insulin clearance to curb diet-induced metabolic abnormalities and steatohepatitis in wild-type but not Cc1-/- mice fed a high-fat diet for 2 months. Conclusion: Exenatide promotes insulin clearance in parallel with insulin secretion to prevent chronic hyperinsulinemia and the resulting hepatic steatosis, and this contributes to its insulin sensitizing effect. Our data further highlight the relevance of physiologic insulin metabolism in maintaining insulin sensitivity and normal lipid metabolism. (Hepatology Communications 2018;2:35-47).

18.
Br J Pain ; 11(3): 108-118, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28785407

RESUMO

BACKGROUND: Emerging adulthood (18-30 years), in the Western world, is often a time of identity development and exploration, focusing on areas of work, relationships and education. Individuals with chronic illnesses, such as chronic pain, may be more vulnerable to facing challenges during this time. This study aims to investigate the needs of young adults (YAs) attending a tertiary level National Health Service (NHS) Pain Management Programme (PMP) Service in the United Kingdom; exploring how these needs may translate on to clinical assessment and the delivery of rehabilitation interventions. METHOD: This is a descriptive qualitative study influenced by phenomenological approaches. YA with a diagnosis of chronic pain were recruited and assigned to one of four focus groups facilitated by a clinical psychologist and occupational therapist. A semi-structured interview guide was used to help facilitate the group discussion. RESULTS: Qualitative analysis identified four key themes in understanding the needs of YAs with chronic pain: (1) thwarted opportunities, (2) peer separation, (3) perceived illness validity in the context of age and (4) dependency/parental enmeshment. CONCLUSIONS: The emerging adulthood literature provides a valuable framework for examining a normal developmental trajectory and highlights the relevance of age-related processes in YAs with chronic pain. The idealisation of opportunity and the role of perception in this developmental phase both appear relevant. It is significant that emotional stability is not yet established in emerging adulthood and links to unhelpful management strategies that may be differentiated from older populations are identified.

19.
Psychiatr Serv ; 66(9): 923-9, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25975887

RESUMO

OBJECTIVE: The goal of mental health courts (MHCs) is to decrease incarceration and recidivism while increasing continuity of mental health treatment. Although previous research has found positive outcomes, questions remain unanswered regarding the population for which MHCs work best. No studies have assessed potential differences in MHC outcomes by psychiatric diagnosis. This study filled the gap by addressing the following research question: Are there differences in short-term program outcomes and in long-term recidivism and mental health engagement outcomes by psychiatric diagnosis? METHODS: The study was a cross-site evaluation of eight MHCs in a single state. To assess long-term outcomes, this study analyzed data from participants who had been discharged from an MHC for at least one year (N=234). Four diagnostic categories were used: bipolar disorder, depressive disorder, schizophrenia, and "other" disorder. Demographic, programmatic, recidivism, and mental health treatment data for each individual were collected from state administrative agencies. RESULTS: The findings suggest no differences by diagnosis in short-term outcomes or recidivism; however, significant reductions in use of high-intensity mental health services were noted for individuals with schizophrenia. CONCLUSIONS: Findings support inclusive eligibility for MHC participation across diagnostic categories and should inform policy and practice in regard to MHC development and operation. Future research should examine other key characteristics to determine ways in which resources can be best utilized.


Assuntos
Transtorno Bipolar/epidemiologia , Transtorno Bipolar/terapia , Criminosos/psicologia , Serviços de Saúde Mental , Esquizofrenia/epidemiologia , Esquizofrenia/terapia , Adulto , Feminino , Psiquiatria Legal , Humanos , Masculino , Meio-Oeste dos Estados Unidos/epidemiologia
20.
Eur J Paediatr Neurol ; 19(1): 37-40, 2015 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-25457510

RESUMO

OBJECTIVE: To assess pregnancy outcomes on women exposed to monotherapy with antiepileptic agents. METHODS: Questionnaires were sent to women with epilepsy in our practice who were pregnant between 2006 and 2011. 62/86 patients (72%) who responded were on monotherapy. 24 fetuses (63%) were exposed to lamotrigine, 11 (28%) to levetiracetam, 2 (5.2%) to topiramate, 1 (2.6%) to gabapentin, 17 (27%) to carbamazepine, 5 to phenytoin and 2 to valproate. RESULTS: There were 55 (88%) live births and 7 unsuccessful pregnancies (miscarriages/stillbirths). Unsuccessful pregnancies were reported in 2/24 gestations exposed to lamotrigine, 2/11 to levetiracetam and 3/17 to carbamazepine. Delayed motor development or speech delay requiring therapy and special programming was noted in 2/24 children prenatally exposed to lamotrigine, 3/17 exposed to carbamazepine and 1/2 children exposed to valproate. CONCLUSION: Our pilot study of children exposed to antiepileptic drug monotherapy in-utero demonstrated a favorable trend for successful pregnancy outcomes and developmental trajectory.


Assuntos
Anticonvulsivantes/efeitos adversos , Deficiências do Desenvolvimento/induzido quimicamente , Deficiências do Desenvolvimento/patologia , Doenças do Sistema Nervoso/induzido quimicamente , Doenças do Sistema Nervoso/patologia , Efeitos Tardios da Exposição Pré-Natal/induzido quimicamente , Efeitos Tardios da Exposição Pré-Natal/patologia , Aborto Espontâneo/epidemiologia , Adulto , Deficiências do Desenvolvimento/psicologia , Feminino , Ácido Fólico/uso terapêutico , Humanos , Transtornos do Desenvolvimento da Linguagem/induzido quimicamente , Transtornos do Desenvolvimento da Linguagem/psicologia , Projetos Piloto , Gravidez , Resultado da Gravidez , Efeitos Tardios da Exposição Pré-Natal/epidemiologia , Natimorto , Inquéritos e Questionários , Vitaminas/uso terapêutico
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA