Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 116
Filtrar
1.
Proc Natl Acad Sci U S A ; 120(52): e2308366120, 2023 Dec 26.
Artigo em Inglês | MEDLINE | ID: mdl-38113261

RESUMO

Immune system threat detection hinges on T cells' ability to perceive varying peptide-major histocompatibility complex (pMHC) antigens. As the Erk and NFAT pathways link T cell receptor engagement to gene regulation, their signaling dynamics may convey information about pMHC inputs. To test this idea, we developed a dual reporter mouse strain and a quantitative imaging assay that, together, enable simultaneous monitoring of Erk and NFAT dynamics in live T cells over day-long timescales as they respond to varying pMHC inputs. Both pathways initially activate uniformly across various pMHC inputs but diverge only over longer (9+ h) timescales, enabling independent encoding of pMHC affinity and dose. These late signaling dynamics are decoded via multiple temporal and combinatorial mechanisms to generate pMHC-specific transcriptional responses. Our findings underscore the importance of long timescale signaling dynamics in antigen perception and establish a framework for understanding T cell responses under diverse contexts.


Assuntos
Ativação Linfocitária , Linfócitos T , Camundongos , Animais , Receptores de Antígenos de Linfócitos T , Antígenos/metabolismo , Antígenos de Histocompatibilidade/metabolismo , Peptídeos/metabolismo , Complexo Principal de Histocompatibilidade , Percepção , Ligação Proteica
2.
Am J Drug Alcohol Abuse ; : 1-7, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38557160

RESUMO

Background: A Zoom-based website was developed in 2020 that offers continuous access to online Narcotics Anonymous (NA) meetings for the first time. This website provides immediate access for persons with substance use disorder to support abstinence from substance-related addictive disorders.Objectives: This study is designed to characterize attendees employing this online format; to evaluate their experiences for gaining support to maintain abstinence; and to compare the 24/7 experience to face-to-face (FF) meetings they attend.Methods: An anonymous 33-item survey was made available on the 24/7 NA website that links to the 24/7 meetings. Persons accessing the site could choose to fill out the survey.Results: 530 respondents completed the survey (64.9% female/35.1% male). Most had stable prior involvement in NA. They had attended more 24/7 meetings (14.9, SD 19.7) than FF meetings (4.6, SD 7.8) in the previous month. 86% had previously attended FF meetings, 48% had served as sponsors, and 92% reported that the 24/7 meetings were more comfortable for them than the FF meetings (p < .001, Cohen's d = 0.65) and more supportive of abstinence (p < .001, Cohen's d = 0.91). Of the respondents, 8% were still using drugs, of whom 52% had previously completed some of the Twelve Steps.Conclusions: The 24/7 format provides a new and easily accessible way for NA members to gain support for abstinence and is positively rated by attendees seeking support for recovery from substance use disorders. It may serve as a valuable adjunct to the traditional FF format.

3.
Am J Addict ; 32(1): 54-59, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36428292

RESUMO

BACKGROUND AND OBJECTIVES: Methamphetamine use disorder (MUD) is a major public health problem, but there are no evidence-based, best-practice, pharmacologic, or behavioral treatments for it. Narcotics Anonymous (NA) may provide an option for referral for such patients. METHODS: Two waves of surveys were sent to a sample of NA members to evaluate demographic, drug use, and NA-related issues. Of 4445 responses received from US residents, 647 listed themselves as abstinent from their worst drug problem, methamphetamine. Twelve possible sources of support were scored by these latter respondents for how important each was for their own recovery. RESULTS: Methamphetamine respondents were longstanding NA members, with their first NA meeting 30.2 years ago, 84.3% having served as sponsors for other members, and with little current craving (0.65 out of 10). Although now abstinent for an average of 13.4 years, at some point over the course of the membership, 47.4% had experienced a relapse, for an average of 16.7 months. In a factor analysis of resources scored, 29.6% of the variance fell under NA social and 29.2% spiritual; and 11.8% under outside professional support. DISCUSSION AND CONCLUSIONS: NA served as a resource for supporting abstinence for some members with MUD. They scored social resources of NA support higher than both spiritual and outside institutional ones. SCIENTIFIC SIGNIFICANCE: NA can serve as a community-based resource for MUD. Determining the nature of recovery that members with MUD have in NA can be useful for further research of socially grounded support for recovery in substance use disorders.


Assuntos
Metanfetamina , Transtornos Relacionados ao Uso de Substâncias , Humanos , Transtornos Relacionados ao Uso de Substâncias/terapia , Terapia Comportamental , Entorpecentes
4.
Subst Use Misuse ; 58(1): 139-145, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36512831

RESUMO

Background: The Twelve Steps described by Narcotics Anonymous (NA) and Alcoholics Anonymous denote key aspects of how members can achieve abstinence from alcohol and other drugs. However, there are limited empirical findings on what long-term members rely on to support their ongoing recovery.Method: In order to clarify the members' reliance on those latter resources, we surveyed 2,293 long-term NA members through the internet on items they rely on for their recovery. They scored nine NA-related resources (e.g., their sponsor) and three non-NA institutional ones (e.g., a professional therapist).Results: Three factors accounted for 53.6% of the variance in the respondents' scores of the 12 items. We labeled them, with the percent of variance accorded, as NA-based social (24.9%) support, spiritual (17.8%) support, and outside professional (10.9%) help. While NA-based resources ranked highest, outside resources (a house of worship, a therapist, or medications for psychological distress) were scored by 75.4% of the respondents. Analysis by subgroups of respondents reflected the diversity of resources members draw on. The use of internet-based meetings during the COVID-19 period reflected the resilience of the NA format.Conclusion: Members of Twelve Step programs can be studied to shed light on options that they rely on for support for their ongoing recovery, both within the fellowships and outside them. Long-term members can apparently rely on resources inside the fellowship and simultaneously on professional ones, as well. These findings can be helpful for researchers in considering mechanisms that underlie long-term Twelve Step-related recovery and for clinicians in employing both these fellowships and outside resources as adjuncts to their professional care.


Assuntos
Alcoolismo , COVID-19 , Humanos , Bolsas de Estudo , Alcoólicos Anônimos , Inquéritos e Questionários , Alcoolismo/psicologia
5.
Mol Ecol ; 31(8): 2494-2509, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-35152505

RESUMO

Many marine herbivorous fishes harbour diverse microbial communities in the hindgut that can play important roles in host health and nutrition. Kyphosus sydneyanus is a temperate marine herbivorous fish that feeds predominantly on brown seaweeds. We employed 16S rRNA gene amplicon sequencing and gas chromatography to characterize microbial communities and their metabolites in different hindgut regions of six K. sydneyanus. Measurements were confined to three distal sections of the intestine, labelled III, IV and V from anterior to posterior. A total of 625 operational taxonomic units from 20 phyla and 123 genera were obtained. Bacteroidota, Firmicutes and Proteobacteria were the major phyla in mean relative abundance, which varied along the gut. Firmicutes (76%) was the most dominant group in section III, whereas Bacteroidota (69.3%) dominated section V. Total short-chain fatty acid (SCFA) concentration was highest in sections IV and V, confirming active fermentation in these two most distal sections. The abundance of Bacteroidota correlated with propionate concentration in section V, while Firmicutes positively correlated with formate in sections III and IV. Acetate levels were highest in sections IV and V, which correlated with abundance of Bacteroidota. Despite differences in gut microbial community composition, SCFA profiles were consistent between individual fish in the different hindgut regions of K. sydneyanus, although proportions of SCFAs differed among gut sections. These findings demonstrate functional compartmentalization of the hindgut microbial community, highlighting the need for regional sampling when interpreting overall microbiome function. These results support previous work suggesting that hindgut microbiota in marine herbivorous fish are important to nutrition in some host species by converting dietary carbohydrates into metabolically useful SCFAs.


Assuntos
Bactérias , Microbiota , Animais , Bacteroidetes/genética , Ácidos Graxos Voláteis/metabolismo , Fermentação , Firmicutes , Peixes/genética , Microbiota/genética , RNA Ribossômico 16S/genética
6.
Am J Drug Alcohol Abuse ; 46(6): 731-738, 2020 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-32870030

RESUMO

Background: The term God, included in 5 of the 12 Steps of Narcotics Anonymous (NA) and Alcoholics Anonymous (AA), self-designated spiritual fellowships, has not been studied empirically relative to members' experiences. A greater understanding of this can be clinically useful and can shed light on the 12 Step process of recovery. Objectives: To determine how NA members understand the 12-step concept "God as we understood Him" and the relationship between their understanding of God and the intensity of their craving and depressive symptoms." Methods: 450 (59% male) NA members completed a survey related to their experiences relative to their relationship with "God." The relationship among these variables and comparisons to the general population was analyzed. Craving and depressive symptoms were assessed by self-report. Results: 98% of the NA participants believe in God explicitly or some other higher power (vs 89% of a probability sample of the US population), 67% believe that God determines what happens to them some or all of the time (vs 48%), 78% (vs 28%) report hearing God talking to them "in their mind"; and 37% report that God talks to them "out loud." Acceptance of 12 Step God-related variables inversely predicted a significant portion of the variance of scores on craving (7.5%) and depression (13.5%). Conclusions: Respondents' understanding of God in NA varied considerably and was predictive of their depressive symptoms and craving intensity. These findings can serve as a basis for research into mechanisms underlying NA/AA recovery experiences and can also aid clinicians in how to employ these programs.


Assuntos
Espiritualidade , Transtornos Relacionados ao Uso de Substâncias/terapia , Adulto , Alcoólicos Anônimos , Alcoolismo/terapia , Fissura , Depressão , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários
7.
Alcohol Clin Exp Res ; 43(7): 1533-1544, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-31090945

RESUMO

BACKGROUND: Alcohol and other drug (AOD) problems are commonly depicted as chronically relapsing, implying multiple recovery attempts are needed prior to remission. Yet, although a robust literature exists on quit attempts in the tobacco field, little is known regarding patterns of cessation attempts related to alcohol, opioid, stimulant, or cannabis problems. Greater knowledge of such estimates and the factors associated with needing fewer or greater attempts may have utility for health policy and clinical communication efforts and approaches. METHODS: Cross-sectional, nationally representative survey of U.S. adults (N = 39,809) who reported resolving a significant AOD problem (n = 2,002) and assessed on number of prior serious recovery attempts, demographic variables, primary substance, clinical histories, and indices of psychological distress and well-being. RESULTS: The statistical distribution of serious recovery attempts was highly skewed with a mean of 5.35 (SD = 13.41) and median of 2 (interquartile range [IQR] = 1 to 4). Black race, prior use of treatment and mutual-help groups, and history of psychiatric comorbidity were associated with higher number of attempts, and more attempts were associated independently with greater current distress. Number of recovery attempts did not differ by primary substance (e.g., opioids vs. alcohol). CONCLUSIONS: Estimates of recovery attempts differed substantially depending on whether the mean (5.35 recovery attempts) or median (2 recovery attempts) was used as the estimator. Implications of this are that the average may be substantially lower than anticipated because cultural expectations are often based on AOD problems being "chronically relapsing" disorders implicating seemingly endless tries. Depending on which one of these estimates is reported in policy documents or communicated in public health announcements or clinical settings, each may elicit varying degrees of help-seeking, hope, motivation, and the use of more assertive clinical approaches. The more fitting, median estimate of attempts should be used in clinical and policy communications given the distribution.


Assuntos
Alcoolismo/reabilitação , Transtornos Relacionados ao Uso de Substâncias/reabilitação , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Alcoolismo/complicações , Alcoolismo/epidemiologia , Estudos Transversais , Etnicidade , Feminino , Felicidade , Humanos , Masculino , Transtornos Mentais/complicações , Pessoa de Meia-Idade , Motivação , Transtornos Relacionados ao Uso de Opioides/reabilitação , Aceitação pelo Paciente de Cuidados de Saúde , Qualidade de Vida , Recidiva , Autoimagem , Grupos de Autoajuda , Fatores Socioeconômicos , Transtornos Relacionados ao Uso de Substâncias/complicações , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Inquéritos e Questionários , Resultado do Tratamento , Estados Unidos/epidemiologia , Adulto Jovem
8.
Pituitary ; 22(5): 514-519, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31401793

RESUMO

PURPOSE: The 2017 World Health Organization classification of pituitary tumors redefined pituitary null cell adenomas (NCAs) by restricting this diagnostic category to pituitary tumors that are negative for pituitary transcription factors and adenohypophyseal hormones. The clinical behavior of this redefined entity has not been widely studied, and this is a major shortcoming of the classification. This study evaluated the imaging and clinical features of NCAs from two pituitary centers and compared them with those of gonadotroph adenomas (GAs). METHODS: Imaging, pathologic, and clinical characteristics of NCAs and GAs were retrospectively reviewed. Tumor immunohistochemistry was performed to confirm absence of adenohypophyseal hormones and pituitary transcription factor expression. RESULTS: Thirty-one NCAs were compared with 38 GAs. NCAs were more likely to invade the cavernous sinus (15/31 [48%] vs. 5/38 [13%], P = .003) and had a higher proliferative index (i.e., MIB-1 > 3%, 11/31 [35%] vs. 5/38 [13%], P = .04). Gross total resection was less likely in the NCA group (19/31 [61%] vs. 33/38 [87], P = .02). Progression-free survival was worse in the NCA cohort (5-year progression-free survival, 0.70 vs. 1.00; P = .011, by log-rank test). CONCLUSIONS: Compared with GAs, NCAs are more invasive at the time of presentation and have a more aggressive clinical course. This study provides evidence that NCAs represent a distinct clinicopathologic entity with behavior that differs adversely from that of GAs. This may inform clinical decision-making, including frequency of postoperative tumor surveillance and timing of adjunctive treatments.


Assuntos
Hipófise/diagnóstico por imagem , Hipófise/patologia , Neoplasias Hipofisárias/diagnóstico por imagem , Neoplasias Hipofisárias/patologia , Feminino , Humanos , Imuno-Histoquímica , Estimativa de Kaplan-Meier , Linfócitos Nulos/patologia , Masculino , Doenças da Hipófise/diagnóstico por imagem , Doenças da Hipófise/mortalidade , Doenças da Hipófise/patologia , Neoplasias Hipofisárias/mortalidade , Intervalo Livre de Progressão , Estudos Retrospectivos , Organização Mundial da Saúde
9.
Am J Gastroenterol ; 113(8): 1238-1246, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29915400

RESUMO

OBJECTIVES: Celiac disease (CD) is common yet under-detected. A point of care test (POCT) may improve CD detection. We aimed to assess the diagnostic performance of an IgA/IgG-deamidated gliadin peptide (DGP)-based POCT for CD detection, patient acceptability, and inter-observer variability of the POCT results. METHODS: From 2013-2017, we prospectively recruited patients referred to secondary care with gastrointestinal symptoms, anemia and/or weight loss (group 1); and patients with self-reported gluten sensitivity with unknown CD status (group 2). All patients had concurrent POCT, IgA-tissue transglutaminase (IgA-TTG), IgA-endomysial antibodies (IgA-EMA), total IgA levels, and duodenal biopsies. Five hundred patients completed acceptability questionnaires, and inter-observer variability of the POCT results was compared among five clinical staff for 400 cases. RESULTS: Group 1: 1000 patients, 58.5% female, age 16-91, median age 57. Forty-one patients (4.1%) were diagnosed with CD. The sensitivities of the POCT, IgA-TTG, and IgA-EMA were 82.9, 78.1, and 70.7%; the specificities were 85.4, 96.3, and 99.8%. Group 2: 61 patients, 83% female; age 17-73, median age 35. The POCT had 100% sensitivity and negative predictive value in detecting CD in group 2. Most patients preferred the POCT to venepuncture (90.4% vs. 2.8%). There was good inter-observer agreement on the POCT results with a Fleiss Kappa coefficient of 0.895. CONCLUSIONS: The POCT had comparable sensitivities to serology, and correctly identified all CD cases in a gluten sensitive cohort. However, its low specificity may increase unnecessary investigations. Despite its advantage of convenience and rapid results, it may not add significant value to case finding in an office-based setting.


Assuntos
Doença Celíaca/diagnóstico , Gliadina/imunologia , Testes Imediatos/normas , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticorpos/imunologia , Doença Celíaca/sangue , Feminino , Humanos , Imunoglobulina A/imunologia , Imunoglobulina G/imunologia , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Adulto Jovem
10.
Am J Gastroenterol ; 112(12): 1859-1867, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29016564

RESUMO

OBJECTIVES: Mucosal healing is important in celiac disease (CD) for the prevention of complications. However, obtaining duodenal biopsies is invasive, and there is currently no reliable surrogate marker for histological remission in clinical practice. We aimed to assess the role of a point-of-care test (POCT) based on IgA/IgG-deamidated gliadin peptide, in detecting persistent villous atrophy (VA) in CD. METHODS: We prospectively recruited patients with CD attending endoscopy for the assessment of histological remission. All patients had IgA-endomysial (EMA) antibodies, IgA-tissue transglutaminase (TTG) antibodies, and the POCT performed, and completed a validated dietary adherence questionnaire. A gastroscopy was performed in all patients, with four biopsies taken from the second part of the duodenum and one from the duodenal bulb. We compared the diagnostic performance of the surrogate markers against duodenal histology as the reference standard. RESULTS: A total of 217 patients with CD (70% female, age range 16-83 years, median age 53 years) on a gluten-free diet (median duration 6 years) were recruited from 2013 to 2017. Eighty-five (39.2%) patients had persistent VA. The sensitivities of the POCT, TTG, EMA, and the adherence score in detecting VA were 67.1%, 44.7%, 37.7%, and 24.7% respectively (P=0.0005). The combination of the POCT and adherence score only marginally increased the sensitivity to 70.6% (59.7-80.0%). CONCLUSIONS: The sensitivity of the POCT was higher than the other surrogate markers in predicting VA. A POCT may provide the additional advantage of an immediate objective assessment of mucosal healing at the time of an office-based follow-up consultation.


Assuntos
Doença Celíaca/metabolismo , Dieta Livre de Glúten , Gliadina/imunologia , Imunoglobulina A/metabolismo , Imunoglobulina G/metabolismo , Testes Imediatos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Atrofia , Doença Celíaca/patologia , Doença Celíaca/prevenção & controle , Feminino , Gastroscopia , Humanos , Mucosa Intestinal/metabolismo , Mucosa Intestinal/patologia , Masculino , Pessoa de Meia-Idade , Cooperação do Paciente , Sensibilidade e Especificidade , Inquéritos e Questionários , Transglutaminases/metabolismo , Adulto Jovem
11.
Childs Nerv Syst ; 33(12): 2083-2085, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28894924

RESUMO

BACKGROUND: Cyclical vomiting syndrome is a disorder characterised by recurrent episodes of profuse vomiting. There are no cases in the literature on the management of children with presenting with cyclical vomiting syndrome and a Chiari malformation type I. DISCUSSION: We report the case of a 12-year-old child diagnosed with cyclical vomiting syndrome and a Chiari malformation type I. The patient received symptomatic relief following a craniocervical decompression.


Assuntos
Malformação de Arnold-Chiari/complicações , Malformação de Arnold-Chiari/diagnóstico por imagem , Vômito/diagnóstico por imagem , Vômito/etiologia , Malformação de Arnold-Chiari/cirurgia , Criança , Descompressão Cirúrgica/métodos , Humanos , Masculino , Vômito/cirurgia
12.
J Am Chem Soc ; 138(17): 5483-6, 2016 05 04.
Artigo em Inglês | MEDLINE | ID: mdl-27088782

RESUMO

Intracellular compartments make up roughly two-thirds of the body, but delivery of molecular imaging probes to these spaces can be challenging. This situation is particularly true for probes designed for detection by magnetic resonance imaging (MRI), a high-resolution but relatively insensitive modality. Most MRI contrast agents are polar and membrane impermeant, making it difficult to deliver them in sufficient quantities for measurement of intracellular analytes. Here we address this problem by introducing a new class of planar tetradentate Mn(III) chelates assembled from a 1,2-phenylenediamido (PDA) backbone. Mn(III)-PDA complexes display T1 relaxivity comparable to that of Gd(III)-based contrast agents and undergo spontaneous cytosolic localization via defined mechanisms. Probe variants incorporating enzyme-cleavable acetomethoxy ester groups are processed by intracellular esterases and accumulate in cells. Probes modified with ethyl esters preferentially label genetically modified cells that express a substrate-selective esterase. In each case, the contrast agents gives rise to robust T1-weighted MRI enhancements, providing precedents for the detection of intracellular targets by Mn(III)-PDA complexes. These compounds therefore constitute a platform from which to develop reagents for molecular MRI of diverse processes inside cells.


Assuntos
Permeabilidade da Membrana Celular , Meios de Contraste/química , Imageamento por Ressonância Magnética/métodos , Manganês/química , Células HEK293 , Humanos
13.
Postgrad Med J ; 91(1081): 622-6, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26310267

RESUMO

OBJECTIVE: Coeliac disease (CD) is a lifelong condition requiring strict adherence to a gluten-free (GF) diet and good availability of GF foods is critical to this. Patients with CD from lower socioeconomic groups are recognised to have higher treatment burden and higher food costs may impact this. Therefore, we aimed to assess the availability and cost of GF food in supermarkets and via the internet. DESIGN: Supermarkets and internet shops delivering to homes in a single city (UK) were analysed between February and March 2014. Stores were identified with comprehensive internet searches. Ten commonly purchased items were analysed for cost and compared with standard non-GF alternatives. Direct measurement of the number of GF foods available was compared between stores which were categorised according to previously published work. SETTING: Supermarkets covering the whole of Sheffield, UK. RESULTS: None of the budget supermarkets surveyed stocked any GF foods. Quality and regular supermarkets stocked the greatest range, each stocking a median of 22 (IQR 39) items (p<0.0001). All GF foods were at least four times more expensive than non-GF alternatives (p<0.0001). GF products are prevalent online, but 5/10 of the surveyed products were significantly more expensive than equivalents in supermarkets. CONCLUSIONS: There is good availability of GF food in regular and quality supermarkets as well as online, but it remains significantly more expensive. Budget supermarkets which tend to be frequented by patients from lower socioeconomic classes stocked no GF foods. This poor availability and added cost is likely to impact on adherence in deprived groups.


Assuntos
Doença Celíaca/dietoterapia , Dieta Livre de Glúten/economia , Financiamento Pessoal/economia , Abastecimento de Alimentos/economia , Cooperação do Paciente/estatística & dados numéricos , Doença Celíaca/economia , Comércio/economia , Custos e Análise de Custo , Inglaterra/epidemiologia , Abastecimento de Alimentos/estatística & dados numéricos , Humanos , Internet
14.
J Psychoactive Drugs ; 46(2): 114-22, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25052787

RESUMO

The efficacy and effectiveness of methadone maintenance treatment (MMT) in the medical management of opioid addiction has been well-established, but treatment outcomes are compromised by the continued use of licit and illicit drugs during MMT. The present study examined the relationship between in-treatment illicit drug use and retention and dropout of 604 MMT patients in Washington, D.C. Sixty-eight percent of patients did not test positive for an unprescribed drug during the study period. Of patients who tested positive for an illicit drug during the baseline period, 55% tested positive for cocaine, 44% for opiates, 23% for THC, 20% for benzodiazepines, 7% for PCP, and 4% for amphetamines. Those testing positive were three times more likely to leave treatment than those who did not test positive. Testing positive for one drug doubled the rate of attrition; testing positive for multiple drugs quadrupled the risk of attrition. Non-prescribed opioid or benzodiazepine use was a predictor of MMT dropout, but prescribed opioid or benzodiazepine use was not. Continued illicit drug use poses significant risk for subsequent premature termination of MMT. Assertive clinical management of continued illicit drug use could provide mechanisms to enhance MMT retention and long-term recovery outcomes.


Assuntos
Usuários de Drogas/psicologia , Adesão à Medicação , Metadona/uso terapêutico , Entorpecentes/uso terapêutico , Tratamento de Substituição de Opiáceos , Transtornos Relacionados ao Uso de Opioides/reabilitação , Adulto , Idoso , District of Columbia , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Transtornos Relacionados ao Uso de Opioides/diagnóstico , Transtornos Relacionados ao Uso de Opioides/psicologia , Pacientes Desistentes do Tratamento , Recidiva , Estudos Retrospectivos , Fatores de Risco , Detecção do Abuso de Substâncias , Centros de Tratamento de Abuso de Substâncias , Fatores de Tempo , Resultado do Tratamento , Adulto Jovem
15.
Subst Abus ; 34(1): 51-9, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23327504

RESUMO

This study investigates the 10-year course and impact of Alcoholics Anonymous (AA)-related helping (AAH), step-work, and meeting attendance on long-term outcomes. Data were derived from 226 treatment-seeking alcoholics recruited from an outpatient site in Project MATCH and followed for 10 years post treatment. Alcohol consumption, AA participation, and other-oriented behavior were assessed at baseline, end of the 3-month treatment period, and 1, 3, and 10 years post treatment. Controlling for explanatory baseline and time-varying variables, results showed significant direct effects of AAH and meeting attendance on reduced alcohol outcomes and a direct effect of AAH on improved other-oriented interest.


Assuntos
Alcoólicos Anônimos , Alcoolismo/psicologia , Alcoolismo/terapia , Pacientes Ambulatoriais/psicologia , Adulto , Consumo de Bebidas Alcoólicas/terapia , Feminino , Seguimentos , Humanos , Masculino , Cooperação do Paciente/psicologia , Resultado do Tratamento
16.
J Psychoactive Drugs ; 45(4): 287-96, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24377167

RESUMO

The emergence of recovery as an organizing construct for behavioral health public policy and the resulting push to increase the recovery orientation of addiction treatment have sparked renewed questions about the prevalence of substance use disorder (SUD) remission/recovery within the general population. The present study reports findings on recovery-related questions imbedded within a public health survey conducted in Philadelphia and four adjacent counties in Southeastern Pennsylvania. The results reveal an adult recovery prevalence rate (9.4%) comparable to rates found in national surveys, but key measures of physical, emotional, and social health of adults in recovery suggest the need for assertive, sustained, and community-based approaches to recovery management that transcend brief episodes of professional intervention.


Assuntos
Alcoolismo/epidemiologia , Nível de Saúde , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Adulto , Coleta de Dados , Humanos , Pennsylvania/epidemiologia , Prevalência
17.
J Addict Dis ; : 1-9, 2023 Feb 11.
Artigo em Inglês | MEDLINE | ID: mdl-36772834

RESUMO

BACKGROUND: Spirituality is a construct encompassing a diversity of strongly held beliefs and pursuits related to life's meaning and purpose. Empirical studies in key domains of spirituality related to substance use disorder (SUD) can be valuable in guiding research, and potentially clinical care. OBJECTIVES: To conduct a scoping review of research on the psychological, biological, and cultural dimensions of spirituality and their role in relation to SUD. To identify limitations in empirical findings within these domains and identify promising areas for related research. DATA SOURCES, STUDY APPRAISAL, AND SYNTHESIS METHODS: Illustrative studies available in the empirical literature are reviewed in order to characterize these three key domains. RESULTS: Certain areas of importance stand out: On Psychology, attribution of SUD to a spiritual outlook; spiritual awakening; the relation of spirituality to drug craving; and spirituality in the context of psychedelic-assisted psychotherapy. On Biology, heritability of traits related to shared spiritual experience; neurophysiologic correlates of spiritually related experiences; and correlates in brain imaging; On Culture, spiritual aspects of SUD in different cultural settings; distinctions between spiritual and religious phenomena; roles that international organizations play; and context of acquiring recovery capital. The need for further research in each area is defined. CONCLUSIONS: There is utility in examining the diversity of findings in the roles of psychology, biology, and culture in the SUD field. Further research, particularly applying randomization and clinical controls, would be useful in improving the effective application of the construct of spirituality in clinical care.

18.
bioRxiv ; 2023 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-37333368

RESUMO

Immune system threat detection hinges on T cells' ability to perceive varying peptide major-histocompatibility complex (pMHC) antigens. As the Erk and NFAT pathways link T cell receptor engagement to gene regulation, their signaling dynamics may convey information about pMHC inputs. To test this idea, we developed a dual reporter mouse strain and a quantitative imaging assay that, together, enable simultaneous monitoring of Erk and NFAT dynamics in live T cells over day-long timescales as they respond to varying pMHC inputs. Both pathways initially activate uniformly across various pMHC inputs, but diverge only over longer (9+ hrs) timescales, enabling independent encoding of pMHC affinity and dose. These late signaling dynamics are decoded via multiple temporal and combinatorial mechanisms to generate pMHC-specific transcriptional responses. Our findings underscore the importance of long timescale signaling dynamics in antigen perception, and establish a framework for understanding T cell responses under diverse contexts. SIGNIFICANCE STATEMENT: To counter diverse pathogens, T cells mount distinct responses to varying peptide-major histocompatibility complex ligands (pMHCs). They perceive the affinity of pMHCs for the T cell receptor (TCR), which reflects its foreignness, as well as pMHC abundance. By tracking signaling responses in single living cells to different pMHCs, we find that T cells can independently perceive pMHC affinity vs dose, and encode this information through the dynamics of Erk and NFAT signaling pathways downstream of the TCR. These dynamics are jointly decoded by gene regulatory mechanisms to produce pMHC-specific activation responses. Our work reveals how T cells can elicit tailored functional responses to diverse threats and how dysregulation of these responses may lead to immune pathologies.

19.
Pituitary ; 15(4): 513-7, 2012 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22038032

RESUMO

The goal of this project was to develop a prospectively-validated, site-specific patient quality of life survey for assessing nasal outcomes following endonasal pituitary and skull base surgery. (ClinicalTrials.gov #NCT01322945) An 9-item patient survey (the ASK Nasal Inventory) focusing on the most common postoperative complaints, such as crusting, sinusitis, pain, and ease of breathing, was developed by the anterior skull base team at the Barrow Neurological Institute. Content was validated in structured patient interviews and by four subject matter experts. This survey was self-administered before and 3 months after surgery to 94 patients (52 endonasal surgery and 42 controls) between October 2010 and June 2011. Standard methods for psychometric evaluation were applied. Cronbach's alpha was 0.83 indicating good internal consistency. Test-retest reliability was excellent in both groups (r = 0.87 and 0.95; P < 0.001). Discriminant validity was determined by comparing mean scores at 3 months in the endonasal and control groups and the difference was significant (13.5 vs. 17.2, P = 0.001). Standardized response mean was 0.17 suggesting that the scale was sensitive to clinical change. Concurrent validity was determined by mean ASK Nasal score for each level of self-reported overall functioning at 3 months (P = 0.001). Preliminary psychometric evaluation of the performance of the ASK Nasal Inventory suggests that it meets criteria as a clinical and research instrument in endonasal surgery. This study also suggests modifications to the instrument, which will serve as key quality of life endpoint in an ongoing multicenter nasal outcomes study.


Assuntos
Nariz/patologia , Base do Crânio/cirurgia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Nariz/fisiopatologia , Hipófise/cirurgia , Estudos Prospectivos , Sinusite/patologia , Sinusite/fisiopatologia , Adulto Jovem
20.
J Addict Med ; 16(2): e81-e86, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-33870953

RESUMO

OBJECTIVES: Face-to-face meetings are key components of Twelve Step (TS) fellowships' support of members' abstinence. Home confinement during COVID-19 made this less feasible. Our objective was to ascertain whether a transition to virtual online meetings among TS members took place, and whether it was potentially effective. METHODS: Two thousand one hundred fifty-two long-standing USA members of Narcotics Anonymous (NA) were surveyed to ascertain their recovery-related experiences and their relation to the transition to virtual meetings. RESULTS: During the previous week (ie, 'during COVID-19') respondents attended more virtual meetings ( = 4.13[SD4.64]) than they had attended both face-to-face meetings before COVID-19 ( = 3.35[SD2.05]), and also face-to-face meetings during COVID-19 ( = 0.75[SD1.8]). Many of the meetings were accessed from sites remote from their homes (44.4%), even overseas (21.5%). The majority (64.9%) found virtual meetings at least as effective in promoting their abstinence as were face-to-face meetings, and 41.8% estimated the same for newcomers. A shorter period of antecedent abstinence from drugs and increased loneliness were associated with increased craving during the transition period. Relative to Whites, Black respondents were less distressed, with a lesser increase in craving, and currently attended more virtual meetings. Data provided by a national program reflected a large increase in virtual TS attendance since the onset of the pandemic. CONCLUSIONS: In a survey of well-established NA members, most had made a successful transition from face-to-face to virtual meetings, relative to their antecedent characteristics. This successful transition suggests the possibility of an enhanced opportunity for stabilizing TS membership.


Assuntos
COVID-19 , Bolsas de Estudo , Humanos , Entorpecentes , Pandemias , Inquéritos e Questionários
SELEÇÃO DE REFERÊNCIAS
Detalhe da pesquisa