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1.
J Psychother Integr ; 30(2): 304-331, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34305369

RESUMO

Early detection and prevention of psychosis has become an international priority. Much of this work has focused on youth presenting with attenuated symptoms of psychosis-those at Clinical High Risk for psychosis (CHR)-given their elevated probability of developing the full disorder in subsequent years. Individuals at CHR may be prone to exacerbated psychological distress during the COVID-19 pandemic and its subsequent physical isolation measures, due to heightened stress sensitivity and comorbid mental health problems. Telepsychotherapy holds promise for reaching this population, especially during the current COVID-19 outbreak. However, there are limited evidence-based guidelines or interventions for use of telepsychotherapy with this population. In this paper, we review common clinical issues for individuals at CHR and how they might be exacerbated by the COVID-19 pandemic; best practices for treatment and adaptations for telepsychotherapy for individuals at CHR; and highlight real clinical issues that we are currently experiencing in a United States-based specialized CHR clinic as we conduct telepsychotherapy via videoconferencing. We conclude with questions for those in the field to contemplate, as well as potential challenges and benefits in using telepsychotherapy with individuals at CHR and their families.

2.
Schizophr Res ; 241: 298-305, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-35220169

RESUMO

Subjective quality of life can be compromised in individuals with psychosis-risk symptoms, with poorer quality of life being associated with worse functioning and later transition to psychosis. Individuals who experience psychosis-related symptoms also tend to endorse more internalized (or self-) mental health stigma when compared to controls, potentially contributing to delays in seeking treatment and increased duration of untreated psychosis, as well as interfering with treatment engagement and retention in those already receiving care. Despite these findings, and the growing recognition for prevention in earlier phases of psychotic illness, few studies have examined the relation between psychosis-risk symptoms, internalized stigma, and subjective quality of life in a younger, help-seeking sample. The present study examined whether internalized stigma mediates the relation between psychosis-risk symptoms and subjective quality of life in a transdiagnostic sample of youth (M age = 17.93, SD = 2.90) at clinical high-risk for psychosis (CHR), with early psychosis, or with non-psychotic disorders (N = 72). Psychosis-risk symptom severity was assessed using the Structured Interview for Psychosis-Risk Syndromes (SIPS). Internalized stigma was assessed using the Internalized Stigma of Mental Illness Inventory (ISMI), and subjective quality of life was assessed using the Youth Quality of Life Instrument - Short Form (YQOL-SF). Internalized stigma fully mediated the relation between psychosis-risk symptoms and subjective quality of life across the full sample (p < .05, f2 = 0.06). Findings suggest that internalized stigma may be an important target in efforts to improve quality of life for individuals in early stages of psychosis.


Assuntos
Transtornos Psicóticos , Qualidade de Vida , Adolescente , Humanos , Saúde Mental , Transtornos Psicóticos/psicologia , Estigma Social
3.
J Abnorm Psychol ; 130(6): 587-593, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34553954

RESUMO

Experiencing psychosis-spectrum symptoms is challenging to youth. Among many difficulties, internalized mental health stigma-the internalization of negative stereotypes-can lead to shame and withdrawal. The objective of this study was to better understand the correlates of internalized stigma among a clinical sample of youth with psychosis-spectrum symptoms. Participants (n = 66; 12-25 years old) were referred by community providers in Maryland, United States. Psychosis-spectrum symptoms were measured via the Structured Interview for Psychosis-Risk Syndromes (SIPS); family-functioning was measured via the Family Assessment Device. Interviewers rated participants' social/role functioning via the Global Functioning: Social and Role Scales. Internalized stigma was measured using the Internalized Stigma of Mental Illness (ISMI) total scale and subscales. The sample included 34 individuals at clinical high risk for psychosis, 16 experiencing early psychosis, and 16 help-seeking controls. Regression analyses indicated that unusual beliefs, avolition, role functioning, and lower family-functioning (caregiver-reported) were significantly associated with higher aspects of internalized stigma, controlling for other symptoms and sociodemographics. These models explained 27% of the variance (adjusted R2) in the total ISMI scale and between 15% to 49% of the variance in ISMI-subscales. Among this help-seeking sample, unusual beliefs, avolition, higher role functioning, and lower family-functioning (caregiver-reported) were associated with more internalized stigma. Pending future research with larger samples, therapeutic interventions focused on these factors and their correlates may benefit youth. Future research is needed to determine temporal precedence of these associations. (PsycInfo Database Record (c) 2021 APA, all rights reserved).


Assuntos
Saúde Mental , Transtornos Psicóticos , Adolescente , Adulto , Criança , Humanos , Ajustamento Social , Estigma Social , Adulto Jovem
4.
Schizophr Bull ; 47(6): 1534-1543, 2021 10 21.
Artigo em Inglês | MEDLINE | ID: mdl-34240217

RESUMO

Dysfunction in the neural circuits underlying salience signaling is implicated in symptoms of psychosis and may predict conversion to a psychotic disorder in youth at clinical high risk (CHR) for psychosis. Additionally, negative symptom severity, including consummatory and anticipatory aspects of anhedonia, may predict functional outcome in individuals with schizophrenia-spectrum disorders. However, it is unclear whether anhedonia is related to the ability to attribute incentive salience to stimuli (through reinforcement learning [RL]) and whether measures of anhedonia and RL predict functional outcome in a younger, help-seeking population. We administered the Salience Attribution Test (SAT) to 33 participants who met criteria for either CHR or a recent-onset psychotic disorder and 29 help-seeking youth with nonpsychotic disorders. In the SAT, participants must identify relevant and irrelevant stimulus dimensions and be sensitive to different reinforcement probabilities for the 2 levels of the relevant dimension ("adaptive salience"). Adaptive salience attribution was positively related to both consummatory pleasure and functioning in the full sample. Analyses also revealed an indirect effect of adaptive salience on the relation between consummatory pleasure and both role (αß = .22, 95% CI = 0.02, 0.48) and social functioning (αß = .14, 95% CI = 0.02, 0.30). These findings suggest a distinct pathway to poor global functioning in help-seeking youth, via impaired reward sensitivity and RL.


Assuntos
Anedonia/fisiologia , Funcionamento Psicossocial , Transtornos Psicóticos/fisiopatologia , Reforço Psicológico , Adolescente , Depressão , Feminino , Humanos , Masculino , Aceitação pelo Paciente de Cuidados de Saúde , Risco
5.
Schizophr Res ; 226: 111-119, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-30995969

RESUMO

Abnormal reward processing is thought to play an important role in the development of psychosis, but relatively few studies have examined reward prediction errors, reinforcement learning (RL), and the reward circuitry that subserves these interconnected processes among individuals at clinical high-risk (CHR) for the disorder. Here, we present behavioral and functional neuroimaging results of two experimental tasks designed to measure overlapping aspects of reward processing among individuals at CHR (n = 22) and healthy controls (n = 19). We found no group differences in response times to positive, negative, or neutral outcome-signaling cues, and no significant differences in brain activation during reward anticipation or receipt. Youth at CHR, however, displayed clear RL impairments, as well as attenuated responses to rewards and blunted prediction error signals in the ventral striatum, dorsal anterior cingulate cortex (dACC), and ventromedial prefrontal cortex (vmPFC). Greater contrasts for cue valence (gain-loss) and outcome magnitude (large-small) in the vmPFC were associated with more severe negative symptoms, and deficits in dACC signaling during RL were associated with more depressive symptoms. Our results provide evidence for RL deficits and abnormal prediction error signaling in the brain's reward circuitry among individuals at CHR, while also suggesting that reward motivation may be relatively preserved at this stage in development. Longitudinal studies, medication-free participants, and comparison of neurobehavioral measures against both healthy and clinical controls are needed to better understand the role of reward system abnormalities in the development of psychosis.


Assuntos
Transtornos Psicóticos , Estriado Ventral , Adolescente , Humanos , Imageamento por Ressonância Magnética , Motivação , Transtornos Psicóticos/diagnóstico por imagem , Recompensa , Estriado Ventral/diagnóstico por imagem
6.
Psychiatry Res ; 274: 30-35, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30780059

RESUMO

Self-report screening instruments offer promise in furthering early identification of at-risk youth, yet current efforts are limited by false positive rates. Identifying moderators of accuracy is a potential step towards improving identification and prevention efforts. We investigated the moderating effect of age on self-reported attenuated positive symptoms from the Prime Screen and clinician diagnosed clinical high-risk/early psychosis (CHR/EP) status. Participants (N = 134) were racially diverse, lower-income, help-seeking adolescents and young adults from a primarily urban community. The overall model predicting CHR/EP status was significant, with results suggesting the presence of a trending interaction between age and Prime Screen symptoms. Analyses indicated that number of items endorsed to predict CHR/EP decreased with age (youngest group [M = 12.99] cut off = 6 items; middle age group [M = 14.97] cut off = 3; oldest age group [M = 18.40] cut off = 1). Although younger participants endorsed more risk items on average, follow up analyses suggested that the Prime Screen was a more accurate predictor of clinician-diagnosed-risk among older participants relative to their younger peers. The current study builds on the literature identifying moderators of psychosis-risk screening measure accuracy, highlighting potential limitations of CHR/EP screening tools in younger populations.


Assuntos
Aceitação pelo Paciente de Cuidados de Saúde/psicologia , Escalas de Graduação Psiquiátrica/normas , Transtornos Psicóticos/diagnóstico , Transtornos Psicóticos/psicologia , Autorrelato/normas , Adolescente , Fatores Etários , Criança , Estudos Transversais , Feminino , Humanos , Masculino , Sintomas Prodrômicos , Transtornos Psicóticos/terapia , Reprodutibilidade dos Testes , Adulto Jovem
7.
Psychiatry Res ; 261: 344-350, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29334659

RESUMO

Zinc dysregulation is linked to neuropsychiatric disorders and a beneficial response to zinc supplementation has been demonstrated for depression. In this case series, we examined serum zinc levels with respect to clinical factors among 20 acutely ill psychiatric cases admitted to a large urban public hospital. The results showed frank clinical zinc insufficiency in a quarter of the subjects. Group-wise analyses showed a significant association between reduced serum zinc and diagnosis of depression, and reduced serum zinc in those with aggressive, assaultive, or violent behaviors. By contrast, relatively elevated zinc levels were observed in a subset of psychotic cases on antipsychotics and mood stabilizers who had no mood symptoms. In summary, clinical zinc insufficiency was common in these acutely admitted psychiatric cases. Zinc supplementation may ameliorate symptoms in certain cases and should be considered in treatment planning. A separate patient group had elevated zinc levels, which could conceivably be pathogenic. Larger studies are needed to confirm and extend this pilot data.


Assuntos
Transtornos Mentais/sangue , Zinco/sangue , Doença Aguda , Adulto , Agressão/psicologia , Antipsicóticos/uso terapêutico , Feminino , Humanos , Pacientes Internados/psicologia , Masculino , Transtornos Mentais/tratamento farmacológico , Transtornos Mentais/psicologia , Pessoa de Meia-Idade , Violência/psicologia
8.
Schizophr Res ; 195: 549-553, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-28935167

RESUMO

Recent research suggests that trauma history (TH) is a strong socio-environmental risk factor for the development of psychosis. While reported rates of childhood trauma are higher among individuals at clinical high-risk (CHR) for psychosis than in the general population, little research has explored the effects of trauma upon the severity of attenuated positive symptoms. We aimed to explore the specific relationships between TH and baseline symptom severity; likelihood of conversion to full-blown psychosis; suicidal ideation (SI); and suicidal behavior (SB) in a cohort of 200 help-seeking CHR individuals. Participants were evaluated every three months for up to two years using the Structured Interview for Psychosis-Risk Syndromes (SIPS). More trauma history was reported by females and Hispanic/Latino participants, while age and race did not significantly distinguish those with and without TH. Individuals with TH reported higher rates of SI and SB than those without. While TH was positively associated with several SIPS subscales, including Unusual Thought Content, Perceptual Abnormalities/Hallucinations, Bizarre Thinking, Sleep Disturbances, and Dysphoric Mood, and negatively associated with Expressed Emotion, results indicated that TH was not significantly related to conversion to psychosis. Moreover, baseline SI was unrelated to conversion and baseline DSM diagnosis, with the exception of Post-Traumatic Stress Disorder (PTSD). These results suggest that traumatic experiences may significantly impact the severity of attenuated positive symptoms and suicidality in the CHR state, providing new windows for further research and potential intervention.


Assuntos
Sintomas Prodrômicos , Transtornos Psicóticos/psicologia , Ideação Suicida , Tentativa de Suicídio/psicologia , Ferimentos e Lesões/psicologia , Adolescente , Adulto , Estudos de Coortes , Feminino , Humanos , Masculino , Probabilidade , Escalas de Graduação Psiquiátrica , Adulto Jovem
9.
Methods Mol Med ; 135: 183-99, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-17951659

RESUMO

Necrosis and apoptosis have been demonstrated in articular cartilage in response to trauma and disease. However, cell death in articular cartilage may also be thought of as a scale of cell death culminating in secondary necrosis with the failure to remove apoptotic cells from the tissue. The in situ detection of cell death is an important technique in studying articular cartilage as it most closely resembles the in vivo situation. The methods described here involve the use of light microscopy and electron microscopy in conjunction with fluorescent and biochemical methods to correctly ascertain the type of cell death that has occurred.


Assuntos
Cartilagem Articular/patologia , Animais , Bovinos , Morte Celular , Condrócitos/patologia , Técnicas Citológicas , Etídio/análogos & derivados , Corantes Fluorescentes , Humanos , Masculino , Microscopia Eletrônica de Transmissão , Necrose , Osteoartrite/patologia
10.
Arch Psychol (Chic) ; 1(3)2017 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-29400347

RESUMO

Early trauma (ET), though broadly and inconsistently defined, has been repeatedly linked to numerous psychological disturbances, including various developmental stages of psychotic disorders. The prodromal phase of psychosis highlights a unique and relevant population that provides insight into the critical periods of psychosis development. As such, a relatively recent research focus on individuals at clinical high risk (CHR) for psychosis reveals robust associations of early life trauma exposures with prodromal symptoms and function in these cohorts. While prevalence rates of ET in CHR cohorts remain consistently high, methodological measures of traumatic experiences vary across studies, presenting potential problems for reliability and validity of results. This review aims to 1) highlight the existing evidence identifying associations of ET, of multiple forms, with both symptom severity and transition rates to psychosis in CHR individuals, 2) present data on the variability among trauma assessments and its implications for conclusions about its relationship with clinical variables, 3) describe cognitive deficits common in CHR cohorts, including perceptual and neurocognitive impairments, and their neural correlates, that may modify the relationship of ET to symptoms, and 4) propose future directions for standardization of trauma assessment in CHR cohorts to better understand its clinical and cognitive correlates.

12.
J Anat ; 209(4): 481-93, 2006 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17005020

RESUMO

Arguably, the gold standard of biological repair of articular cartilage lesions is autologous chondrocyte transplantation. Although the clinical outcomes appear to range between good and excellent in most cases, there are, nevertheless, both clinical and biological challenges that remain to improve rehabilitation and clinical outcome. One of the major biological problems relates to tissue integration of the reparative tissue into the host tissue at a predictable level. Often within a single lesion, varying degrees of integration can be observed from total integration through to non-integration as one passes through the defect. Here we briefly review some of the literature relating to this problem and include some of our own data drawn from questions we have posed about the biological nature of cartilage/cartilage integration. The nature and status of the tissue that comprises the wound lesion edge is central to tissue integration, and controlling aspects of trauma and free-radical-induced cell death together with matrix synthesis are identified as two components that require further investigation. Interestingly, there appears to be a limited ability of chondrocytes to be able to infiltrate existing cartilage matrices and even to occupy empty chondrocyte lacunae. Proliferation as a result of blunt and sharp trauma shows differential responses. As expected, blunt trauma induces a greater proliferative burst than sharp trauma and is more widespread from the lesion edge. However, in the case of sharp trauma, the basal cells enter proliferation before surface zone chondrocytes, which is not the case in blunt wounds. Regulation of these and associated processes will be necessary in order to devise strategies that can predict successful integration in biological repair procedures.


Assuntos
Cartilagem Articular/lesões , Cicatrização/fisiologia , Ferimentos não Penetrantes/terapia , Cartilagem Articular/patologia , Proliferação de Células , Condrócitos/patologia , Condrócitos/transplante , Humanos , Osteoartrite/patologia , Osteoartrite/terapia , Transplante Autólogo , Ferimentos não Penetrantes/patologia
13.
J Cell Sci ; 117(Pt 6): 889-97, 2004 Feb 29.
Artigo em Inglês | MEDLINE | ID: mdl-14762107

RESUMO

It is becoming increasingly apparent that articular cartilage growth is achieved by apposition from the articular surface. For such a mechanism to occur, a population of stem/progenitor cells must reside within the articular cartilage to provide transit amplifying progeny for growth. Here, we report on the isolation of an articular cartilage progenitor cell from the surface zone of articular cartilage using differential adhesion to fibronectin. This population of cells exhibits high affinity for fibronectin, possesses a high colony-forming efficiency and expresses the cell fate selector gene Notch 1. Inhibition of Notch signalling abolishes colony forming ability whilst activated Notch rescues this inhibition. The progenitor population also exhibits phenotypic plasticity in its differentiation pathway in an embryonic chick tracking system, such that chondroprogenitors can engraft into a variety of connective tissue types including bone, tendon and perimysium. The identification of a chondrocyte subpopulation with progenitor-like characteristics will allow for advances in our understanding of both cartilage growth and maintenance as well as provide novel solutions to articular cartilage repair.


Assuntos
Cartilagem Articular/citologia , Cartilagem Articular/metabolismo , Condrócitos , Fibronectinas/farmacologia , Receptores de Superfície Celular/metabolismo , Células-Tronco , Fatores de Transcrição/metabolismo , Secretases da Proteína Precursora do Amiloide , Animais , Osso e Ossos/embriologia , Cartilagem Articular/crescimento & desenvolvimento , Bovinos , Adesão Celular/efeitos dos fármacos , Adesão Celular/fisiologia , Divisão Celular/efeitos dos fármacos , Divisão Celular/fisiologia , Embrião de Galinha , Condrócitos/citologia , Condrócitos/metabolismo , Endopeptidases/metabolismo , Vetores Genéticos , Integrina alfa5beta1/metabolismo , Inibidores de Proteases/farmacologia , Receptor Notch1 , Receptores de Superfície Celular/genética , Proteínas Recombinantes , Células-Tronco/citologia , Células-Tronco/metabolismo , Tendões/embriologia , Fatores de Transcrição/genética , Transdução Genética
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