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1.
Eur Heart J ; 45(36): 3751-3763, 2024 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-39115049

RESUMO

BACKGROUND AND AIMS: Type 1 long QT syndrome (LQT1) is caused by pathogenic variants in the KCNQ1-encoded Kv7.1 potassium channels, which pathologically prolong ventricular action potential duration (APD). Herein, the pathologic phenotype in transgenic LQT1 rabbits is rescued using a novel KCNQ1 suppression-replacement (SupRep) gene therapy. METHODS: KCNQ1-SupRep gene therapy was developed by combining into a single construct a KCNQ1 shRNA (suppression) and an shRNA-immune KCNQ1 cDNA (replacement), packaged into adeno-associated virus serotype 9, and delivered in vivo via an intra-aortic root injection (1E10 vg/kg). To ascertain the efficacy of SupRep, 12-lead electrocardiograms were assessed in adult LQT1 and wild-type (WT) rabbits and patch-clamp experiments were performed on isolated ventricular cardiomyocytes. RESULTS: KCNQ1-SupRep treatment of LQT1 rabbits resulted in significant shortening of the pathologically prolonged QT index (QTi) towards WT levels. Ventricular cardiomyocytes isolated from treated LQT1 rabbits demonstrated pronounced shortening of APD compared to LQT1 controls, leading to levels similar to WT (LQT1-UT vs. LQT1-SupRep, P < .0001, LQT1-SupRep vs. WT, P = ns). Under ß-adrenergic stimulation with isoproterenol, SupRep-treated rabbits demonstrated a WT-like physiological QTi and APD90 behaviour. CONCLUSIONS: This study provides the first animal-model, proof-of-concept gene therapy for correction of LQT1. In LQT1 rabbits, treatment with KCNQ1-SupRep gene therapy normalized the clinical QTi and cellular APD90 to near WT levels both at baseline and after isoproterenol. If similar QT/APD correction can be achieved with intravenous administration of KCNQ1-SupRep gene therapy in LQT1 rabbits, these encouraging data should compel continued development of this gene therapy for patients with LQT1.


Assuntos
Terapia Genética , Canal de Potássio KCNQ1 , Miócitos Cardíacos , Síndrome de Romano-Ward , Animais , Coelhos , Canal de Potássio KCNQ1/genética , Terapia Genética/métodos , Síndrome de Romano-Ward/genética , Síndrome de Romano-Ward/terapia , Animais Geneticamente Modificados , Potenciais de Ação , Eletrocardiografia , RNA Interferente Pequeno/genética , Síndrome do QT Longo/genética , Síndrome do QT Longo/terapia , Modelos Animais de Doenças
2.
Hepatology ; 77(6): 1943-1957, 2023 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-36052732

RESUMO

BACKGROUND: Morreton virus (MORV) is an oncolytic Vesiculovirus , genetically distinct from vesicular stomatitis virus (VSV). AIM: To report that MORV induced potent cytopathic effects (CPEs) in cholangiocarcinoma (CCA) and hepatocellular carcinoma (HCC) in vitro models. APPROACH AND RESULTS: In preliminary safety analyses, high intranasal doses (up to 10 10 50% tissue culture infectious dose [TCID 50 ]) of MORV were not associated with significant adverse effects in immune competent, non-tumor-bearing mice. MORV was shown to be efficacious in a Hep3B hepatocellular cancer xenograft model but not in a CCA xenograft HuCCT1 model. In an immune competent, syngeneic murine CCA model, single intratumoral treatments with MORV (1 × 10 7 TCID 50 ) triggered a robust antitumor immune response leading to substantial tumor regression and disease control at a dose 10-fold lower than VSV (1 × 10 8 TCID 50 ). MORV led to increased CD8 + cytotoxic T cells without compensatory increases in tumor-associated macrophages and granulocytic or monocytic myeloid-derived suppressor cells. CONCLUSIONS: Our findings indicate that wild-type MORV is safe and can induce potent tumor regression via immune-mediated and immune-independent mechanisms in HCC and CCA animal models without dose limiting adverse events. These data warrant further development and clinical translation of MORV as an oncolytic virotherapy platform.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Terapia Viral Oncolítica , Camundongos , Humanos , Animais , Neoplasias Hepáticas/terapia , Neoplasias Hepáticas/patologia , Carcinoma Hepatocelular/patologia , Vesiculovirus , Modelos Animais de Doenças , Linhagem Celular Tumoral
3.
J Gen Intern Med ; 2024 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-38865006

RESUMO

BACKGROUND: Disparities in hypertension control across race, ethnicity, and language have been a long-standing problem in the United States. OBJECTIVE: To assess whether a multi-pronged intervention can improve hypertension control for a target population and reduce disparities. DESIGN: This stepped wedge cluster randomized trial was conducted at 15 adult primary care clinics affiliated with Massachusetts General Hospital. PCPs were randomized to receive the intervention in twelve groups. PARTICIPANTS: The target population was patients who met one of the following criteria based on self-identification: (1) Asian, Black, Indigenous, multi-racial, or other race; (2) Hispanic ethnicity; or (3) preferred language other than English. Reference population was White, English-speaking patients. INTERVENTIONS: PCPs were given access to an online equity dashboard that displays disparities in chronic disease management and completed an equity huddle with population health coordinators (PHCs), which involved reviewing target patients whose hypertension was not well controlled. In addition, community health workers (CHWs) were available in some practices to offer additional support. MAIN MEASURES: The primary outcome was change in the proportion of target patients meeting the hypertension control goal when comparing intervention and control periods. KEY RESULTS: Of the 365 PCPs who were randomized, 311 PCPs and their 10,865 target patients were included in the analysis. The intervention led to an increase in hypertension control in the target population (RD 0.9%; 95% CI [0.3,1.5]) and there was a higher intervention effect in the target population compared to the reference population (DiD 2.1%; 95% CI [1.1, 3.1]). CONCLUSIONS: Utilizing data on disparities in quality outcome measures in routine clinical practice augmented by clinical support provided by PHCs and CHWs led to modest, but statistically significant, improvement in hypertension control among BIPOC, Hispanic, and LEP patients. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT05278806.

4.
Value Health ; 27(8): 1039-1045, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38615937

RESUMO

OBJECTIVES: Calcitonin gene-related peptide monoclonal antibodies (CGRP mAbs) are novel high-cost treatments for the prevention of migraine. This study presents data on utilization, expenditure, and treatment patterns with CGRP mAbs available under a managed access protocol in Ireland, to a cohort of treatment refractory patients (failed 3 or more previous treatments) with chronic migraine. METHODS: Data were extracted from the Primary Care Reimbursement Service High Tech claims database and special drug request online system and analyzed using Microsoft Excel and SAS. Treatment persistence was evaluated by refill patterns, and adherence was evaluated using the proportion of days covered method. Expenditure data were extracted directly from the database. RESULTS: Between September 1, 2021 and April 30, 2023, 1517 applications for reimbursement approval for a CGRP mAb were received; 1458 (96.1%) were approved for reimbursement. Total expenditure on CGRP mAbs in year 1 (September 1, 2021 to August 31, 2022) was €3.2 million. The majority of patients initiated treatment with fremanezumab (60.8%) or erenumab (37.1%). Almost 90% of patients were considered adherent, and treatment persistence was high, with more than 75% of patients receiving more than 12 months of treatment in our 18-month study time frame. CONCLUSIONS: This study demonstrates the importance of active health technology management, after reimbursement, in enabling cost-effective use of high-cost treatments while providing budget certainty for the healthcare payer. High levels of adherence and persistence suggest that treatment is successfully targeted in situations which unmet clinical need is greatest.


Assuntos
Anticorpos Monoclonais , Peptídeo Relacionado com Gene de Calcitonina , Transtornos de Enxaqueca , Humanos , Irlanda , Anticorpos Monoclonais/uso terapêutico , Anticorpos Monoclonais/economia , Transtornos de Enxaqueca/tratamento farmacológico , Transtornos de Enxaqueca/economia , Gastos em Saúde , Feminino , Anticorpos Monoclonais Humanizados/uso terapêutico , Anticorpos Monoclonais Humanizados/economia , Masculino , Pessoa de Meia-Idade , Adulto , Adesão à Medicação , Custos de Medicamentos
5.
AIDS Behav ; 28(5): 1766-1780, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38411799

RESUMO

This study measures changes in condomless anal sex (CAS) among HIV-negative men who have sex with men (MSM) who are not taking pre-exposure prophylaxis (PrEP). It considers the 2014-2019 cycles of the American Men's Internet Survey, a serial, cross-sectional web-based survey of US cisgender MSM aged ≥ 15 years, in which ~ 10% of each year's sample is drawn from the previous year. Among those surveyed for 2 years who remained HIV-negative and off PrEP, reports of having any CAS and of CAS partner number were compared across years. We disaggregated by partner HIV status, and considered demographic predictors. The overall population saw a significant 2.2 percentage-point (pp) increase in reports of any CAS year-over-year. Sub-populations with the largest year-on-year increases were 15-24-year-olds (5.0-pp) and Hispanic respondents (5.1-pp), with interaction (young Hispanic respondents = 12.8-pp). On the relative scale, these numbers correspond to 3.2%, 7.2%, 7.3% and 18.7%, respectively. Absolute increases were concentrated among partners reported as HIV-negative. Multivariable analyses for CAS initiation found effects concentrated among Hispanic and White youth and residents of fringe counties of large metropolitan areas. CAS partner number increases were similarly predicted by Hispanic identity and young age. Although condom use remains more common than PrEP use, increasing CAS among MSM not on PrEP suggests potential new HIV transmission pathways. Concentration of increases among 18-24-year-old MSM portends future increases in the proportion of newly diagnosed HIV that occur among youth. Concentration among young Hispanic MSM will likely expand existing disparities. Although reducing barriers to PrEP remains vital, condom promotion for MSM remains a key public health practice and appears to be missing key audiences. LGBTQ+-inclusive sex education is one avenue for enhancing these efforts.


Assuntos
Preservativos , Infecções por HIV , Homossexualidade Masculina , Profilaxia Pré-Exposição , Parceiros Sexuais , Sexo sem Proteção , Adolescente , Adulto , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Preservativos/estatística & dados numéricos , Estudos Transversais , Hispânico ou Latino/estatística & dados numéricos , Hispânico ou Latino/psicologia , Infecções por HIV/prevenção & controle , Infecções por HIV/epidemiologia , Soronegatividade para HIV , Homossexualidade Masculina/estatística & dados numéricos , Homossexualidade Masculina/psicologia , Profilaxia Pré-Exposição/estatística & dados numéricos , Assunção de Riscos , Minorias Sexuais e de Gênero/estatística & dados numéricos , Minorias Sexuais e de Gênero/psicologia , Comportamento Sexual/estatística & dados numéricos , Inquéritos e Questionários , Estados Unidos/epidemiologia , Sexo sem Proteção/estatística & dados numéricos , Sexo sem Proteção/psicologia , Brancos
6.
Cochrane Database Syst Rev ; 1: CD001431, 2024 01 29.
Artigo em Inglês | MEDLINE | ID: mdl-38284415

RESUMO

BACKGROUND: Patient decision aids are interventions designed to support people making health decisions. At a minimum, patient decision aids make the decision explicit, provide evidence-based information about the options and associated benefits/harms, and help clarify personal values for features of options. This is an update of a Cochrane review that was first published in 2003 and last updated in 2017. OBJECTIVES: To assess the effects of patient decision aids in adults considering treatment or screening decisions using an integrated knowledge translation approach. SEARCH METHODS: We conducted the updated search for the period of 2015 (last search date) to March 2022 in CENTRAL, MEDLINE, Embase, PsycINFO, EBSCO, and grey literature. The cumulative search covers database origins to March 2022. SELECTION CRITERIA: We included published randomized controlled trials comparing patient decision aids to usual care. Usual care was defined as general information, risk assessment, clinical practice guideline summaries for health consumers, placebo intervention (e.g. information on another topic), or no intervention. DATA COLLECTION AND ANALYSIS: Two authors independently screened citations for inclusion, extracted intervention and outcome data, and assessed risk of bias using the Cochrane risk of bias tool. Primary outcomes, based on the International Patient Decision Aid Standards (IPDAS), were attributes related to the choice made (informed values-based choice congruence) and the decision-making process, such as knowledge, accurate risk perceptions, feeling informed, clear values, participation in decision-making, and adverse events. Secondary outcomes were choice, confidence in decision-making, adherence to the chosen option, preference-linked health outcomes, and impact on the healthcare system (e.g. consultation length). We pooled results using mean differences (MDs) and risk ratios (RRs) with 95% confidence intervals (CIs), applying a random-effects model. We conducted a subgroup analysis of 105 studies that were included in the previous review version compared to those published since that update (n = 104 studies). We used Grading of Recommendations Assessment, Development, and Evaluation (GRADE) to assess the certainty of the evidence. MAIN RESULTS: This update added 104 new studies for a total of 209 studies involving 107,698 participants. The patient decision aids focused on 71 different decisions. The most common decisions were about cardiovascular treatments (n = 22 studies), cancer screening (n = 17 studies colorectal, 15 prostate, 12 breast), cancer treatments (e.g. 15 breast, 11 prostate), mental health treatments (n = 10 studies), and joint replacement surgery (n = 9 studies). When assessing risk of bias in the included studies, we rated two items as mostly unclear (selective reporting: 100 studies; blinding of participants/personnel: 161 studies), due to inadequate reporting. Of the 209 included studies, 34 had at least one item rated as high risk of bias. There was moderate-certainty evidence that patient decision aids probably increase the congruence between informed values and care choices compared to usual care (RR 1.75, 95% CI 1.44 to 2.13; 21 studies, 9377 participants). Regarding attributes related to the decision-making process and compared to usual care, there was high-certainty evidence that patient decision aids result in improved participants' knowledge (MD 11.90/100, 95% CI 10.60 to 13.19; 107 studies, 25,492 participants), accuracy of risk perceptions (RR 1.94, 95% CI 1.61 to 2.34; 25 studies, 7796 participants), and decreased decisional conflict related to feeling uninformed (MD -10.02, 95% CI -12.31 to -7.74; 58 studies, 12,104 participants), indecision about personal values (MD -7.86, 95% CI -9.69 to -6.02; 55 studies, 11,880 participants), and proportion of people who were passive in decision-making (clinician-controlled) (RR 0.72, 95% CI 0.59 to 0.88; 21 studies, 4348 participants). For adverse outcomes, there was high-certainty evidence that there was no difference in decision regret between the patient decision aid and usual care groups (MD -1.23, 95% CI -3.05 to 0.59; 22 studies, 3707 participants). Of note, there was no difference in the length of consultation when patient decision aids were used in preparation for the consultation (MD -2.97 minutes, 95% CI -7.84 to 1.90; 5 studies, 420 participants). When patient decision aids were used during the consultation with the clinician, the length of consultation was 1.5 minutes longer (MD 1.50 minutes, 95% CI 0.79 to 2.20; 8 studies, 2702 participants). We found the same direction of effect when we compared results for patient decision aid studies reported in the previous update compared to studies conducted since 2015. AUTHORS' CONCLUSIONS: Compared to usual care, across a wide variety of decisions, patient decision aids probably helped more adults reach informed values-congruent choices. They led to large increases in knowledge, accurate risk perceptions, and an active role in decision-making. Our updated review also found that patient decision aids increased patients' feeling informed and clear about their personal values. There was no difference in decision regret between people using decision aids versus those receiving usual care. Further studies are needed to assess the impact of patient decision aids on adherence and downstream effects on cost and resource use.


Assuntos
Técnicas de Apoio para a Decisão , Psicoterapia , Humanos , Encaminhamento e Consulta
7.
Ann Intern Med ; 176(10): 1405-1412, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37812780

RESUMO

Dementia, according to the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, is defined by a significant decline in 1 or more cognitive domains that interferes with a person's independence in daily activities. Mild cognitive impairment (MCI) differs from dementia in that the impairment is not sufficient to interfere with independence. For the purposes of this discussion, cognitive impairment (CI) includes both dementia and MCI. Various screening tests are available for CI. These tests ask patients to perform a series of tasks that assess 1 or more domains of cognitive function or ask a caregiver to report on the patient's abilities. A positive result on a screening test does not equate to a diagnosis of CI; rather, it should lead to additional testing to confirm the diagnosis. On review of the evidence, the U.S. Preventive Services Task Force (USPSTF) concluded in 2020 that the evidence was insufficient to assess the balance of benefits and harms of screening for CI in older adults ("I statement"). The USPSTF did clarify that although there is insufficient evidence, there may be important reasons to identify CI. In this article, 2 experts review the available evidence to answer the following questions: What screening tools are available, and how effective are they in identifying patients with CI? What interventions are available for patients found to have CI, to what extent do they improve patient outcomes, and what, if any, negative effects occur? And, would they recommend screening for CI, and why or why not?


Assuntos
Disfunção Cognitiva , Demência , Visitas de Preceptoria , Humanos , Idoso , Disfunção Cognitiva/diagnóstico , Programas de Rastreamento , Cognição , Demência/diagnóstico
8.
JAMA ; 332(1): 51-57, 2024 07 02.
Artigo em Inglês | MEDLINE | ID: mdl-38833246

RESUMO

Importance: Falls are the leading cause of injury-related morbidity and mortality among older adults in the US. In 2018, 27.5% of community-dwelling adults 65 years or older reported at least 1 fall in the past year and 10.2% reported a fall-related injury. In 2021, an estimated 38 742 deaths resulted from fall-related injuries. Objective: The US Preventive Services Task Force (USPSTF) commissioned a systematic review to evaluate the effectiveness and harms of primary care-relevant interventions to prevent falls and fall-related morbidity and mortality in community-dwelling adults 65 years or older. Population: Community-dwelling adults 65 years or older at increased risk of falls. Evidence Assessment: The USPSTF concludes with moderate certainty that exercise interventions provide a moderate net benefit in preventing falls and fall-related morbidity in older adults at increased risk for falls. The USPSTF concludes with moderate certainty that multifactorial interventions provide a small net benefit in preventing falls and fall-related morbidity in older adults at increased risk for falls. Recommendation: The USPSTF recommends exercise interventions to prevent falls in community-dwelling adults 65 years or older who are at increased risk for falls. (B recommendation) The USPSTF recommends that clinicians individualize the decision to offer multifactorial interventions to prevent falls to community-dwelling adults 65 years or older who are at increased risk for falls. Existing evidence indicates that the overall net benefit of routinely offering multifactorial interventions to prevent falls is small. When determining whether this service is appropriate for an individual, patients and clinicians should consider the balance of benefits and harms based on the circumstances of prior falls, presence of comorbid medical conditions, and the patient's values and preferences. (C recommendation).


Assuntos
Acidentes por Quedas , Terapia por Exercício , Vida Independente , Idoso , Humanos , Acidentes por Quedas/prevenção & controle , Acidentes por Quedas/estatística & dados numéricos , Comitês Consultivos , Exercício Físico , Atenção Primária à Saúde , Medição de Risco , Estados Unidos/epidemiologia
9.
JAMA ; 331(22): 1918-1930, 2024 06 11.
Artigo em Inglês | MEDLINE | ID: mdl-38687503

RESUMO

Importance: Among all US women, breast cancer is the second most common cancer and the second most common cause of cancer death. In 2023, an estimated 43 170 women died of breast cancer. Non-Hispanic White women have the highest incidence of breast cancer and non-Hispanic Black women have the highest mortality rate. Objective: The USPSTF commissioned a systematic review to evaluate the comparative effectiveness of different mammography-based breast cancer screening strategies by age to start and stop screening, screening interval, modality, use of supplemental imaging, or personalization of screening for breast cancer on the incidence of and progression to advanced breast cancer, breast cancer morbidity, and breast cancer-specific or all-cause mortality, and collaborative modeling studies to complement the evidence from the review. Population: Cisgender women and all other persons assigned female at birth aged 40 years or older at average risk of breast cancer. Evidence Assessment: The USPSTF concludes with moderate certainty that biennial screening mammography in women aged 40 to 74 years has a moderate net benefit. The USPSTF concludes that the evidence is insufficient to determine the balance of benefits and harms of screening mammography in women 75 years or older and the balance of benefits and harms of supplemental screening for breast cancer with breast ultrasound or magnetic resonance imaging (MRI), regardless of breast density. Recommendation: The USPSTF recommends biennial screening mammography for women aged 40 to 74 years. (B recommendation) The USPSTF concludes that the current evidence is insufficient to assess the balance of benefits and harms of screening mammography in women 75 years or older. (I statement) The USPSTF concludes that the current evidence is insufficient to assess the balance of benefits and harms of supplemental screening for breast cancer using breast ultrasonography or MRI in women identified to have dense breasts on an otherwise negative screening mammogram. (I statement).


Assuntos
Neoplasias da Mama , Detecção Precoce de Câncer , Mamografia , Humanos , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/prevenção & controle , Neoplasias da Mama/diagnóstico por imagem , Feminino , Pessoa de Meia-Idade , Idoso , Adulto , Imageamento por Ressonância Magnética , Fatores Etários , Ultrassonografia Mamária , Estados Unidos , Programas de Rastreamento
10.
JAMA ; 331(11): 951-958, 2024 03 19.
Artigo em Inglês | MEDLINE | ID: mdl-38502069

RESUMO

Importance: Child maltreatment, which includes child abuse and neglect, can have profound effects on health, development, survival, and well-being throughout childhood and adulthood. The prevalence of child maltreatment in the US is uncertain and likely underestimated. In 2021, an estimated 600 000 children were identified by Child Protective Services as experiencing abuse or neglect and an estimated 1820 children died of abuse and neglect. Objective: The US Preventive Services Task Force (USPSTF) commissioned a systematic review to evaluate benefits and harms of primary care-feasible or referable behavioral counseling interventions to prevent child maltreatment in children and adolescents younger than 18 years without signs or symptoms of maltreatment. Population: Children and adolescents younger than 18 years who do not have signs or symptoms of or known exposure to maltreatment. Evidence Assessment: The USPSTF concludes that the evidence is insufficient to determine the balance of benefits and harms of primary care interventions to prevent child maltreatment in children and adolescents younger than 18 years without signs or symptoms of or known exposure to maltreatment. Recommendation: The USPSTF concludes that the current evidence is insufficient to assess the balance of benefits and harms of primary care interventions to prevent child maltreatment. (I statement).


Assuntos
Maus-Tratos Infantis , Atenção Primária à Saúde , Adolescente , Criança , Humanos , Comitês Consultivos , Terapia Comportamental , Maus-Tratos Infantis/mortalidade , Maus-Tratos Infantis/prevenção & controle , Serviços de Proteção Infantil/estatística & dados numéricos , Atenção Primária à Saúde/métodos , Encaminhamento e Consulta , Medição de Risco , Estados Unidos/epidemiologia
11.
JAMA ; 331(4): 329-334, 2024 01 23.
Artigo em Inglês | MEDLINE | ID: mdl-38261037

RESUMO

Importance: Speech and language delays and disorders can pose significant problems for children and their families. Evidence suggests that school-aged children with speech or language delays may be at increased risk of learning and literacy disabilities, including difficulties with reading and writing. Objective: The US Preventive Services Task Force (USPSTF) commissioned a systematic review to evaluate benefits and harms of screening for speech and language delay and disorders in children 5 years or younger. Population: Asymptomatic children 5 years or younger whose parents or clinicians do not have specific concerns about their speech, language, hearing, or development. Evidence Assessment: The USPSTF concludes that the current evidence is insufficient to assess the balance of benefits and harms of screening for speech and language delay and disorders in children who do not present with signs or symptoms or parent/caregiver concerns. Recommendation: The USPSTF concludes that the current evidence is insufficient to assess the balance of benefits and harms of screening for speech and language delay and disorders in children 5 years or younger without signs or symptoms. (I statement).


Assuntos
Transtornos do Desenvolvimento da Linguagem , Programas de Rastreamento , Criança , Humanos , Comitês Consultivos , Transtornos do Desenvolvimento da Linguagem/diagnóstico , Pré-Escolar , Doenças Assintomáticas
12.
J Neurophysiol ; 130(4): 941-952, 2023 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-37671445

RESUMO

Command systems integrate sensory information and then activate the interneurons and motor neurons that mediate behavior. Much research has established that the higher-order projection neurons that constitute these systems can play a key role in specifying the nature of the motor activity induced, or determining its parametric features. To a large extent, these insights have been obtained by contrasting activity induced by stimulating one neuron (or set of neurons) to activity induced by stimulating a different neuron (or set of neurons). The focus of our work differs. We study one type of motor program, ingestive feeding in the mollusc Aplysia californica, which can either be triggered when a single projection neuron (CBI-2) is repeatedly stimulated or can be triggered by projection neuron coactivation (e.g., activation of CBI-2 and CBI-3). We ask why this might be an advantageous arrangement. The cellular/molecular mechanisms that configure motor activity are different in the two situations because the released neurotransmitters differ. We focus on an important consequence of this arrangement, the fact that a persistent state can be induced with repeated CBI-2 stimulation that is not necessarily induced by CBI-2/3 coactivation. We show that this difference can have consequences for the ability of the system to switch from one type of activity to another.NEW & NOTEWORTHY We study a type of motor program that can be induced either by stimulating a higher-order projection neuron that induces a persistent state, or by coactivating projection neurons that configure activity but do not produce a state change. We show that when an activity is configured without a state change, it is possible to immediately return to an intermediate state that subsequently can be converted to any type of motor program.


Assuntos
Aplysia , Comportamento Alimentar , Animais , Comportamento Alimentar/fisiologia , Aplysia/fisiologia , Ingestão de Alimentos/fisiologia , Interneurônios/fisiologia , Neurônios Motores/fisiologia , Gânglios dos Invertebrados/fisiologia
13.
J Virol ; 96(3): e0082621, 2022 02 09.
Artigo em Inglês | MEDLINE | ID: mdl-34787457

RESUMO

Human adenovirus serotype 26 (Ad26) is used as a gene-based vaccine against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and HIV-1. However, its primary receptor portfolio remains controversial, potentially including sialic acid, coxsackie and adenovirus receptor (CAR), integrins, and CD46. We and others have shown that Ad26 can use CD46, but these observations were questioned on the basis of the inability to cocrystallize Ad26 fiber with CD46. Recent work demonstrated that Ad26 binds CD46 with its hexon protein rather than its fiber. We examined the functional consequences of Ad26 for infection in vitro and in vivo. Ectopic expression of human CD46 on Chinese hamster ovary cells increased Ad26 infection significantly. Deletion of the complement control protein domain CCP1 or CCP2 or the serine-threonine-proline (STP) region of CD46 reduced infection. Comparing wild-type and sialic acid-deficient CHO cells, we show that the usage of CD46 is independent of its sialylation status. Ad26 transduction was increased in CD46 transgenic mice after intramuscular (i.m.) injection but not after intranasal (i.n.) administration. Ad26 transduction was 10-fold lower than Ad5 transduction after intratumoral (i.t.) injection of CD46-expressing tumors. Ad26 transduction of liver was 1,000-fold lower than that ofAd5 after intravenous (i.v.) injection. These data demonstrate the use of CD46 by Ad26 in certain situations but also show that the receptor has little consequence by other routes of administration. Finally, i.v. injection of high doses of Ad26 into CD46 mice induced release of liver enzymes into the bloodstream and reduced white blood cell counts but did not induce thrombocytopenia. This suggests that Ad26 virions do not induce direct clotting side effects seen during coronavirus disease 2019 (COVID-19) vaccination with this serotype of adenovirus. IMPORTANCE The human species D Ad26 is being investigated as a low-seroprevalence vector for oncolytic virotherapy and gene-based vaccination against HIV-1 and SARS-CoV-2. However, there is debate in the literature about its tropism and receptor utilization, which directly influence its efficiency for certain applications. This work was aimed at determining which receptor(s) this virus uses for infection and its role in virus biology, vaccine efficacy, and, importantly, vaccine safety.


Assuntos
Infecções por Adenovirus Humanos/metabolismo , Infecções por Adenovirus Humanos/virologia , Adenovírus Humanos/classificação , Adenovírus Humanos/fisiologia , Proteína de Membrana Semelhante a Receptor de Coxsackie e Adenovirus/metabolismo , Interações Hospedeiro-Patógeno , Proteína Cofatora de Membrana/metabolismo , Adenovírus Humanos/ultraestrutura , Animais , Biomarcadores , Contagem de Células Sanguíneas , Células CHO , Linhagem Celular , Proteína de Membrana Semelhante a Receptor de Coxsackie e Adenovirus/química , Cricetulus , Modelos Animais de Doenças , Expressão Gênica , Humanos , Proteína Cofatora de Membrana/química , Proteína Cofatora de Membrana/genética , Camundongos Transgênicos , Modelos Biológicos , Modelos Moleculares , Mutagênese , Ligação Proteica , Conformação Proteica , Sorogrupo , Ácidos Siálicos/metabolismo , Ácidos Siálicos/farmacologia , Relação Estrutura-Atividade
14.
J Gen Intern Med ; 38(1): 36-41, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-35230620

RESUMO

BACKGROUND: Guidelines suggest clinicians inform patients about their 10-year cardiovascular disease (CVD) risk; however, little is known about how the risk estimate influences patients' preferences for statin therapy for primary prevention. OBJECTIVE: To define predictors of preference for statin therapy after participants were informed about their individualized benefits and harms. DESIGN: Cross-sectional survey in 2020. SETTING: Online US survey panel. PARTICIPANTS: A national sample of 304 respondents aged 40 to 75 who had not previously taken a statin and who knew their cholesterol levels and blood pressure measurements. INTERVENTION: Participants entered their risk factors into a calculator which estimated their 10-year CVD risk. They were then provided with an estimate of their absolute risk reduction with a statin and the chance of side effects from meta-analyses. MAIN MEASUREMENTS: We used a hierarchical model to predict participants' preferences for statin therapy according to their 10-year CVD risk, perceptions of the magnitude of statin benefit (large, medium, small, or almost no benefit), worry about side effects (very worried, somewhat worried, a little worried, not worried at all), and other variables. KEY RESULTS: Participants had a mean age of 55 years (SD = 9.9); 50% were female, 44% were non-white, and 16% had a high school degree or less education. After reviewing their benefits and side effects, 45% of the participants reported they probably or definitely wanted to take a statin. In the full hierarchical model, only perceived benefits of taking a statin was a significant independent predictor of wanting a statin (OR 7.3, 95% CI 4.7, 12.2). LIMITATIONS: Participants were from an internet survey panel and making hypothetical decisions. CONCLUSIONS: Participants' perceptions of their benefit from statin therapy predicted wanting to take a statin for primary prevention; neither estimated CVD risk nor worries about statin side effects were independent predictors.


Assuntos
Doenças Cardiovasculares , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Inibidores de Hidroximetilglutaril-CoA Redutases , Humanos , Feminino , Pessoa de Meia-Idade , Masculino , Inibidores de Hidroximetilglutaril-CoA Redutases/efeitos adversos , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/prevenção & controle , Estudos Transversais , Fatores de Risco , Inquéritos e Questionários
15.
Sex Transm Dis ; 50(8): 506-511, 2023 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-37213183

RESUMO

BACKGROUND: Anecdotal reports suggest that partner services (PS) are less successful among people with repeat sexually transmitted infection (STI) diagnoses and/or previous PS interactions. We examine whether having repeated STI diagnoses and/or PS interactions is associated with PS outcomes among men who have sex with men (MSM). METHODS: With STI surveillance and PS data for MSM diagnosed with gonorrhea, chlamydia, and/or syphilis from 2007 to 2018, in King County, WA, we used Poisson regression models to examine the relationships between PS outcomes (e.g., completing a PS interview and providing identifying information for a contact) with (1) number of previous STI case episodes and (2) number of previous PS interviews completed. RESULTS: Of the 18,501 MSM STI case patients initiated for interview in the analytic period (2011-2018), 13,232 (72%) completed a PS interview, and 8,030 (43%) had at least 1 prior PS interview. The proportion of initiated cases successfully interviewed declined from 71% among those with no previous PS interview to 66% among those with ≥3 prior interviews. Similarly, the proportion of interviews with ≥1 partner identified declined with greater numbers of previous PS interviews (from 46% [0 interviews] to 35% [≥3 interviews]). In multivariate models, having ≥1 prior PS interview was negatively associated with completing a subsequent interview and providing partner locating information. CONCLUSIONS: Having a history of STI PS interviews is associated with less PS engagement among MSM. New approaches to PS should be explored to address the growing epidemic of STIs among MSM.


Assuntos
Infecções por Chlamydia , Gonorreia , Infecções por HIV , Minorias Sexuais e de Gênero , Infecções Sexualmente Transmissíveis , Masculino , Humanos , Homossexualidade Masculina , Parceiros Sexuais , Infecções Sexualmente Transmissíveis/diagnóstico , Infecções Sexualmente Transmissíveis/epidemiologia , Infecções Sexualmente Transmissíveis/prevenção & controle , Gonorreia/diagnóstico , Gonorreia/epidemiologia , Gonorreia/prevenção & controle , Fadiga , Infecções por HIV/diagnóstico , Infecções por HIV/epidemiologia , Infecções por HIV/prevenção & controle , Infecções por Chlamydia/diagnóstico , Infecções por Chlamydia/epidemiologia , Infecções por Chlamydia/prevenção & controle
16.
Ann Fam Med ; 21(2): 165-171, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36973047

RESUMO

PURPOSE: The US Preventive Services Task Force (USPSTF) is an independent body that makes evidence-based recommendations regarding preventive services to improve health for people nationwide. Here, we summarize current USPSTF methods, describe how methods are evolving to address preventive health equity, and define evidence gaps for future research. METHODS: We summarize current USPSTF methods as well as ongoing methods development. RESULTS: The USPSTF prioritizes topics on the basis of disease burden, extent of new evidence, and whether the service can be provided in primary care and going forward will increasingly consider health equity. Analytic frameworks specify the key questions and linkages connecting the preventive service to health outcomes. Contextual questions provide information on natural history, current practice, health outcomes in high-risk groups, and health equity. The USPSTF assigns a level of certainty to the estimate of net benefit of a preventive service (high, moderate, or low). The magnitude of net benefit is also judged (substantial, moderate, small, or zero/negative). The USPSTF uses these assessments to assign a letter grade from A (recommend) to D (recommend against). I statements are issued when evidence is insufficient. CONCLUSIONS: The USPSTF will continue to evolve its methods for simulation modeling and to use evidence to address conditions for which there are limited data for population groups who bear a disproportionate burden of disease. Additional pilot work is underway to better understand the relations of the social constructs of race, ethnicity, and gender with health outcomes to inform the development of a USPSTF health equity framework.


Assuntos
Medicina Baseada em Evidências , Equidade em Saúde , Humanos , Estados Unidos , Comitês Consultivos , Serviços Preventivos de Saúde , Previsões
17.
Cochrane Database Syst Rev ; 1: CD012974, 2023 01 17.
Artigo em Inglês | MEDLINE | ID: mdl-36648215

RESUMO

BACKGROUND: Cutaneous melanoma is amongst the most aggressive of all skin cancers. Neoadjuvant treatment is a form of induction therapy, given to shrink a cancerous tumour prior to the main treatment (usually surgery). The purpose is to improve survival and surgical outcomes. This review systematically appraises the literature investigating the use of neoadjuvant treatment for stage III and IV cutaneous melanoma. OBJECTIVES: To assess the effects of neoadjuvant treatment in adults with stage III or stage IV melanoma according to the seventh edition American Joint Committee on Cancer (AJCC) staging system. SEARCH METHODS: We searched the following databases up to 10 August 2021 inclusive: Cochrane Skin Specialised Register, CENTRAL, MEDLINE, Embase, LILACS and four trials registers, together with reference checking and contact with study authors to identify additional studies. We also handsearched proceedings from specific conferences from 2016 to 2020 inclusive. SELECTION CRITERIA: Randomised controlled trials (RCTs) of people with stage III and IV melanoma, comparing neoadjuvant treatment strategies (using targeted treatments, immunotherapies, radiotherapy, topical treatments or chemotherapy) with any of these agents or current standard of care (SOC), were eligible for inclusion. DATA COLLECTION AND ANALYSIS: We used standard Cochrane methods. Primary outcomes were overall survival (OS) and adverse effects (AEs). Secondary outcomes included time to recurrence (TTR), quality of life (QOL), and overall response rate (ORR). We used GRADE to evaluate the certainty of the evidence. MAIN RESULTS: We included eight RCTs involving 402 participants. Studies enrolled adults, mostly with stage III melanoma, investigated immunotherapies, chemotherapy, or targeted treatments, and compared these with surgical excision with or without adjuvant treatment. Duration of follow-up and therapeutic regimens varied, which, combined with heterogeneity in the population and definitions of the endpoints, precluded meta-analysis of all identified studies. We performed a meta-analysis including three studies. We are very uncertain if neoadjuvant treatment increases OS when compared to no neoadjuvant treatment (hazard ratio (HR) 0.43, 95% confidence interval (CI) 0.15 to 1.21; 2 studies, 171 participants; very low-certainty evidence). Neoadjuvant treatment may increase the rate of AEs, but the evidence is very uncertain (26% versus 16%, risk ratio (RR) 1.58, 95% CI 0.97 to 2.55; 2 studies, 162 participants; very low-certainty evidence). We are very uncertain if neoadjuvant treatment increases TTR (HR 0.51, 95% CI 0.22 to 1.17; 2 studies, 171 participants; very low-certainty evidence). Studies did not report ORR as a comparative outcome or measure QOL data. We are very uncertain whether neoadjuvant targeted treatment with dabrafenib and trametinib increases OS (HR 0.28, 95% CI 0.03 to 2.25; 1 study, 21 participants; very low-certainty evidence) or TTR (HR 0.02, 95% CI 0.00 to 0.22; 1 study, 21 participants; very low-certainty evidence) when compared to surgery. The study did not report comparative rates of AEs and overall response, and did not measure QOL. We are very uncertain if neoadjuvant immunotherapy with talimogene laherparepvec increases OS when compared to no neoadjuvant treatment (HR 0.49, 95% CI 0.15 to 1.64; 1 study, 150 participants, very low-certainty evidence). It may have a higher rate of AEs, but the evidence is very uncertain (16.5% versus 5.8%, RR 2.84, 95% CI 0.96 to 8.37; 1 study, 142 participants; very low-certainty evidence). We are very uncertain if it increases TTR (HR 0.75, 95% CI 0.31 to 1.79; 1 study, 150 participants; very low-certainty evidence). The study did not report comparative ORRs or measure QOL. OS was not reported for neoadjuvant immunotherapy (combined ipilimumab and nivolumab) when compared to the combination of ipilimumab and nivolumab as adjuvant treatment. There may be little or no difference in the rate of AEs between these treatments (9%, RR 1.0, 95% CI 0.75 to 1.34; 1 study, 20 participants; low-certainty evidence). The study did not report comparative ORRs or measure TTR and QOL. Neoadjuvant immunotherapy (combined ipilimumab and nivolumab) likely results in little to no difference in OS when compared to neoadjuvant nivolumab monotherapy (P = 0.18; 1 study, 23 participants; moderate-certainty evidence). It may increase the rate of AEs, but the certainty of this evidence is very low (72.8% versus 8.3%, RR 8.73, 95% CI 1.29 to 59; 1 study, 23 participants); this trial was halted early due to observation of disease progression preventing surgical resection in the monotherapy arm and the high rate of treatment-related AEs in the combination arm. Neoadjuvant combination treatment may lead to higher ORR, but the evidence is very uncertain (72.8% versus 25%, RR 2.91, 95% CI 1.02 to 8.27; 1 study, 23 participants; very low-certainty evidence). It likely results in little to no difference in TTR (P = 0.19; 1 study, 23 participants; low-certainty evidence). The study did not measure QOL. OS was not reported for neoadjuvant immunotherapy (combined ipilimumab and nivolumab) when compared to neoadjuvant sequential immunotherapy (ipilimumab then nivolumab). Only Grade 3 to 4 immune-related AEs were reported; fewer were reported with combination treatment, and the sequential treatment arm closed early due to a high incidence of severe AEs. The neoadjuvant combination likely results in a higher ORR compared to sequential neoadjuvant treatment (60.1% versus 42.3%, RR 1.42, 95% CI 0.87 to 2.32; 1 study, 86 participants; low-certainty evidence). The study did not measure TTR and QOL. No data were reported on OS, AEs, TTR, or QOL for the comparison of neoadjuvant interferon (HDI) plus chemotherapy versus neoadjuvant chemotherapy. Neoadjuvant HDI plus chemotherapy may have little to no effect on ORR, but the evidence is very uncertain (33% versus 22%, RR 1.75, 95% CI 0.62 to 4.95; 1 study, 36 participants; very low-certainty evidence). AUTHORS' CONCLUSIONS: We are uncertain if neoadjuvant treatment increases OS or TTR compared with no neoadjuvant treatment, and it may be associated with a slightly higher rate of AEs. There is insufficient evidence to support the use of neoadjuvant treatment in clinical practice. Priorities for research include the development of a core outcome set for neoadjuvant trials that are adequately powered, with validation of pathological and radiological responses as intermediate endpoints, to investigate the relative benefits of neoadjuvant treatment compared with adjuvant treatment with immunotherapies or targeted therapies.


Assuntos
Antineoplásicos , Melanoma , Neoplasias Cutâneas , Adulto , Humanos , Antineoplásicos/efeitos adversos , Ipilimumab , Melanoma/tratamento farmacológico , Melanoma/patologia , Nivolumabe , Neoplasias Cutâneas/tratamento farmacológico , Neoplasias Cutâneas/patologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Estadiamento de Neoplasias , Melanoma Maligno Cutâneo
18.
Surgeon ; 21(5): 289-294, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36610867

RESUMO

BACKGROUND: Psychiatric disorders are increasingly prevalent. Studies have demonstrated that the presence of comorbid psychiatric conditions (CPC) is associated with a number of worsening outcomes in hospitalised patients in general. The relationship between a wide range of psychiatric comorbidities and acute surgical presentations has not been studied to date. STUDY DESIGN: The Hospital In-Patient Enquiry (HIPE) system and prospectively maintained eHandover were used to identify all surgical emergency admissions to Mayo University Hospital, Ireland. Patient demographics, comorbidities, primary diagnoses, length of stay (LoS), and procedures undergone were recorded over a 12-months period. Subgroup analyses examining LoS variation in surgical presentation types were performed. RESULTS: 1028 admissions occurred over this one year period, amongst 995 patients, the presence of psychiatric comorbidities increased the mean LoS by 1.9 days (p = 0.002). Comorbid depression, dementia, and intellectual disability conferred a significant increase in LoS by 2.4 days, 2.8 days and 6.7 days respectively. Subgroup analysis revealed greater LoS in patients with CPC diagnosed with non-specific abdominal pain (1.4 days, p = 0.019), skin and soft tissue infections (2.5 days, p = 0.040), bowel obstruction (4.3 days, p = 0.047), and medical disorders (18.6 days, p = 0.010). No significant difference was observed in mortality and readmission rates. CONCLUSION: Psychiatric comorbidities significantly impact length of hospital stay and discharge planning in surgical inpatients. Greater awareness of this can facilitate better care delivery for this population to reduce the LoS and subsequent economic burden on the healthcare system.


Assuntos
Hospitalização , Transtornos Mentais , Humanos , Tempo de Internação , Transtornos Mentais/complicações , Transtornos Mentais/epidemiologia , Alta do Paciente , Atenção à Saúde , Estudos Retrospectivos
19.
JAMA ; 330(3): 253-260, 2023 07 18.
Artigo em Inglês | MEDLINE | ID: mdl-37462699

RESUMO

Importance: Familial hypercholesterolemia and multifactorial dyslipidemia are 2 conditions that cause abnormally high lipid levels in children, which can lead to premature cardiovascular events (eg, myocardial infarction and stroke) and death in adulthood. Objective: The US Preventive Services Task Force (USPSTF) commissioned a systematic review to evaluate the benefits and harms of screening for lipid disorders in asymptomatic children and adolescents. Population: Asymptomatic children and adolescents 20 years or younger without a known diagnosis of a lipid disorder. Evidence Assessment: The USPSTF concludes that the current evidence is insufficient and the balance of benefits and harms for screening for lipid disorders in asymptomatic children and adolescents 20 years or younger cannot be determined. Recommendation: The USPSTF concludes that the current evidence is insufficient to assess the balance of benefits and harms of screening for lipid disorders in children and adolescents 20 years or younger. (I statement).


Assuntos
Dislipidemias , Programas de Rastreamento , Adolescente , Criança , Humanos , Comitês Consultivos , Dislipidemias/complicações , Dislipidemias/diagnóstico , Dislipidemias/terapia , Lipídeos , Programas de Rastreamento/efeitos adversos , Programas de Rastreamento/métodos , Serviços Preventivos de Saúde , Medição de Risco , Adulto Jovem , Doenças Assintomáticas , Doenças Cardiovasculares/etiologia , Doenças Cardiovasculares/prevenção & controle
20.
JAMA ; 330(8): 736-745, 2023 08 22.
Artigo em Inglês | MEDLINE | ID: mdl-37606666

RESUMO

Importance: An estimated 1.2 million persons in the US currently have HIV, and more than 760 000 persons have died of complications related to HIV since the first cases were reported in 1981. Although treatable, HIV is not curable and has significant health consequences. Therefore, effective strategies to prevent HIV are an important public health and clinical priority. Objective: The US Preventive Services Task Force (USPSTF) commissioned a systematic review to evaluate the benefits and harms of preexposure prophylaxis with antiretroviral therapy for the prevention of HIV acquisition, and the diagnostic accuracy of risk assessment tools to identify persons at increased risk of HIV acquisition. Population: Adolescents and adults who do not have HIV and are at increased risk of HIV. Evidence Assessment: The USPSTF concludes with high certainty that there is a substantial net benefit from the use of effective antiretroviral therapy to reduce the risk of acquisition of HIV in persons at increased risk of acquiring HIV. Recommendation: The USPSTF recommends that clinicians prescribe preexposure prophylaxis using effective antiretroviral therapy to persons at increased risk of HIV acquisition to decrease the risk of acquiring HIV. (A recommendation).


Assuntos
Antirretrovirais , Infecções por HIV , Profilaxia Pré-Exposição , Adolescente , Adulto , Humanos , Comitês Consultivos , Antirretrovirais/administração & dosagem , Antirretrovirais/efeitos adversos , Antirretrovirais/uso terapêutico , Infecções por HIV/diagnóstico , Infecções por HIV/epidemiologia , Infecções por HIV/etiologia , Infecções por HIV/prevenção & controle , Profilaxia Pré-Exposição/métodos , Profilaxia Pré-Exposição/normas , Serviços Preventivos de Saúde , Saúde Pública , Medição de Risco/métodos , Medição de Risco/normas , Estados Unidos/epidemiologia
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