Publications by authors named "Snyder H"

Importance: The rise of high-potency opioids such as fentanyl makes buprenorphine initiation challenging due to the risks of precipitated withdrawal, prompting the exploration of strategies, such as low-dose initiation (LDI) of buprenorphine. However, no comparative studies on LDI outcomes exist.

Objective: To evaluate outpatient outcomes associated with 2 LDI protocols of buprenorphine among individuals with opioid use disorder (OUD) using fentanyl.

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Background And Objective: Poor executive functioning (EF) has been consistently linked to depression, but questions remain regarding mechanisms driving this association. The current study tested whether poor EF is linked to depression symptoms six weeks later via dependent stressors (model 1) and stressors perceived to be uncontrollable (model 2) at week two (W2) and repetitive negative thinking (RNT) at W4 during early COVID-19 in college students.

Design: This was a longitudinal study with four timepoints spanning six weeks (April-June 2020).

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Introduction: Alzheimer's disease (AD) and related dementias (ADRD) present significant health challenges. Understanding their underlying biology, advancing existing and new therapies, and enhancing care for patients and caregivers are critical priorities.

Methods: This article utilizes data from the International Alzheimer's and Related Dementias Research Portfolio (IADRP) to analyze funding patterns from the Alzheimer's Association over the past decade.

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Article Synopsis
  • Treatment for alcohol use disorder (AUD) is important for improving health outcomes in patients with alcohol-associated cirrhosis, yet it remains underutilized, especially among socioeconomically disadvantaged groups.
  • A study of 196 diverse patients revealed that 67% had ever utilized AUD treatment, while only 32% accessed treatment in the last year; younger patients and those with worse mental health symptoms were more likely to seek treatment.
  • Factors such as older age and better liver disease quality of life were associated with lower treatment utilization, while those with significant anxiety or depression tended to seek treatment more frequently.
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  • Chronic stroke survivors often experience persistent disability due to both arm/leg weakness and respiratory muscle weakness, which can negatively affect rehabilitation, quality of life, and increase health risks.
  • The study aims to compare the effects of two different respiratory training programs alongside a comprehensive exercise regimen on various health outcomes in chronic stroke survivors.
  • A randomized controlled trial involving 80 participants will examine the impact of respiratory strength vs. relaxation training over eight weeks, assessing multiple physical and societal participation measures while monitoring health status for one year post-intervention.
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Background: Multidomain lifestyle interventions may have the potential to slow biological aging as captured by deficit accumulation frailty indices. We describe the distribution and composition of the 49-component frailty index (FI) developed by the U.S.

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  • Alcohol use is common among patients with chronic liver disease (CLD), and this study examined factors that affect their motivation to reduce drinking.
  • The study involved 121 participants from safety-net hospitals and Veterans Affairs systems, assessing their mental health, alcohol use, and motivation to decrease drinking through various questionnaires.
  • Results showed that depression and severity of alcohol problems were linked to higher motivation, while the treatment site impacted their importance score, indicating these factors should guide future interventions in hepatology care.
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Objective: This study describes the current management of patients with eating disorders (EDs) served by publicly-funded Medicaid behavioral health systems.

Method: Behavioral health leaders across nine counties in California met on a quarterly basis to share experiences, challenges, and lessons in the management of EDs within publicly-funded service systems. Detailed notes were taken, and a qualitative content analysis was undertaken to identify key themes.

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Introduction: Delay in diagnosis of posterior cortical atrophy (PCA) syndrome is common, and the lack of familiarity with assessment tools for identifying visual cortical dysfunction is a contributing factor. We propose recommendations for the approach to the evaluation of PCA clinical features during the office visit, the neuropsychological evaluation, and the research setting. A recommended screening battery for eye clinics is also proposed.

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Here we highlight the Alzheimer's Association's role since its inception, as a strategic collaborator with National Institutes of Health-National Institute on Aging in the development of the modern era of the Alzheimer's Movement and in making Alzheimer's disease (AD) a national priority in the United States by developing several initiatives to advance knowledge about the cause, diagnosis, and treatment of dementia. Among these collaborative undertakings, the Alzheimer's Disease Neuroimaging Initiative (ADNI) is an exemplary case, launched with groundwork by the Neuroimaging Working Group sponsored by the Association's Ronald and Nancy Reagan Research Institute on AD. The unique contribution of the Association to the development of ADNI includes participation as a member of ADNI's Private Partner Scientific Board and involvement in developing an AD biomarker standardization and validation subproject, which has led to a conceptual shift in the field to define AD based on its underlying biology.

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Background And Aims: Telehealth has emerged as an important mode of cirrhosis care delivery, but its use and satisfaction among vulnerable populations (eg, racial/ethnic minorities, socioeconomically disadvantaged, substance use disorders) are unknown. We evaluated digital capacity, telehealth use, satisfaction and associated factors among patients receiving hepatology care via telehealth (telehepatology) across 2 Veterans Affairs and 1 safety-net Healthcare systems.

Methods: English- and Spanish-speaking adults with cirrhosis (N = 256) completed surveys on telehealth use and satisfaction, quality of life, pandemic stress, alcohol use and depression.

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Alzheimer’s disease can be treated by targeting amyloid-β plaques and diagnosed in vivo by biomarkers, prompting the revision of criteria for the diagnosis and staging of this disease.

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Article Synopsis
  • - The National Institute on Aging and Alzheimer's Association updated their 2018 framework for diagnosing Alzheimer's disease (AD) to align with new research and biological definitions of diseases, which apply to all neurodegenerative disorders.
  • - The document outlines criteria for diagnosing and staging AD based on biomarkers, emphasizing that the disease begins biologically before symptoms appear and progresses as neuropathological changes worsen.
  • - Core 1 biomarkers, like amyloid PET and specific cerebrospinal fluid markers, are critical for initial diagnosis, while Core 2 biomarkers help provide additional insights and prognostic information as the disease advances.
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Diagnosing, treating, and managing gynecologic cancer can lead to significant physical and emotional stress, which may have lasting effects on a patient's overall health and quality of life. The physical symptoms of gynecologic cancer, such as pain, discomfort, and loss of function, may also contribute to emotional distress and anxiety. Further, the diagnosis, treatment, and surveillance of gynecologic cancer may be traumatic due to the need for invasive exams and procedures, especially in women with a history of sexual assault or other traumatic experiences.

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Westerners tend to relate items in a categorical manner, whereas Easterners focus more on functional relationships. The present study extended research on semantic organization in long-term memory to working memory. First, Americans' and Turks' preferences for categorical versus functional relationships were tested.

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Background: Buprenorphine is an effective treatment for opioid use disorder (OUD); however, buprenorphine initiation can be complicated by withdrawal symptoms including precipitated withdrawal. There has been increasing interest in using low dose initiation (LDI) strategies to reduce this withdrawal risk. As there are limited data on withdrawal symptoms during LDI, we characterize withdrawal symptoms in people with daily fentanyl use who underwent initiation using these strategies as outpatients.

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Fentanyl-mixed and substituted heroin is well-documented, but less is known about unintentional fentanyl use among people using stimulants. To determine the prevalence of and racial and ethnic disparities in unintentional fentanyl use among people experiencing a medically attended opioid overdose, we reviewed 448 suspected non-fatal overdose cases attended by a community paramedic overdose response team in San Francisco from June to September 2022. We applied a case definition for opioid overdose to paramedic records and abstracted data on intended substance use prior to overdose.

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Article Synopsis
  • - Infantile epileptic spasms syndrome (IESS) is a serious condition characterized by seizures, developmental delays, and specific brain wave patterns called hypsarrhythmia, with many causes including structural, metabolic, infectious, and genetic factors.
  • - About 60% of IESS cases have identifiable causes like structural issues or infections, while genetic research has identified over 28 copy number variants and 70 single gene variants linked to the syndrome, including associations with conditions like trisomy 21.
  • - This review focuses on current knowledge surrounding IESS genetics, methods of genetic testing, and how understanding these genetic factors can lead to improved treatments and personalized medicine approaches for individuals with the condition.
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Brief exposure to repeated episodes of low inspired oxygen, or acute intermittent hypoxia (AIH), is a promising therapeutic modality to improve motor function after chronic, incomplete spinal cord injury (SCI). Although therapeutic AIH is under extensive investigation in persons with SCI, limited data are available concerning cardiorespiratory responses during and after AIH exposure despite implications for AIH safety and tolerability. Thus, we recorded immediate (during treatment) and enduring (up to 30 min post-treatment) cardiorespiratory responses to AIH in 19 participants with chronic SCI (>1 year post-injury; injury levels C1 to T6; American Spinal Injury Association Impairment Scale A to D; mean age = 33.

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Introduction: Federal policies and guidelines have expanded the return of individual results to participants and expectations for data sharing between investigators and through repositories. Here, we report investigators' and study participants' views and experiences with data stewardship practices within frontotemporal lobal degeneration (FTLD) research, which reveal unique ethical challenges.

Methods: Semi-structured interviews with (1) investigators conducting FTLD research that includes genetic data collection and/or analysis and (2) participants enrolled in a single site longitudinal FTLD study.

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Background: Management of cirrhosis is challenging and has been complicated by the COVID-19 pandemic due to decreased access to care, increased psychological distress, and alcohol misuse. Recently, The National Institute on Alcohol Abuse and Alcoholism has broadened the definition of recovery from alcohol use disorder to include quality of life (QoL) as an indicator of recovery. This study examined the associations of alcohol-associated cirrhosis etiology and problematic drinking with liver disease QoL (LDQoL).

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Recent approaches aim to represent the dimensional structure of psychopathology, but relatively little research has rigorously tested sub-dimensions within internalizing psychopathology. This study tests pre-registered models of the dimensional structure of internalizing psychopathology, and their relations with current and lifetime depressive and anxiety disorders diagnostic data, in adult samples harmonized across three sites (=427). Across S-1 bifactor and hierarchical models, we found converging evidence for both general and specific internalizing dimensions.

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This editorial summarizes advances from the Clearance of Interstitial Fluid and Cerebrospinal Fluid (CLIC) group, within the Vascular Professional Interest Area (PIA) of the Alzheimer's Association International Society to Advance Alzheimer's Research and Treatment (ISTAART). The overarching objectives of the CLIC group are to: (1) understand the age-related physiology changes that underlie impaired clearance of interstitial fluid (ISF) and cerebrospinal fluid (CSF) (CLIC); (2) understand the cellular and molecular mechanisms underlying intramural periarterial drainage (IPAD) in the brain; (3) establish novel diagnostic tests for Alzheimer's disease (AD), cerebral amyloid angiopathy (CAA), retinal amyloid vasculopathy, amyloid-related imaging abnormalities (ARIA) of spontaneous and iatrogenic CAA-related inflammation (CAA-ri), and vasomotion; and (4) establish novel therapies that facilitate IPAD to eliminate amyloid β (Aβ) from the aging brain and retina, to prevent or reduce AD and CAA pathology and ARIA side events associated with AD immunotherapy.

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Vagus nerve stimulation is a neuromodulatory treatment option for individuals with drug resistant epilepsy who are not resective surgical candidates. As the vagus nerve has widespread neural connections, stimulation can lead to an array of adverse effects. While vomiting and weight loss are known side effects of vagus nerve stimulation, these are typically transient, mild, and do not limit the ability to continue treatment.

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