Publications by authors named "Steven M. Paul"

Objective: Xanomeline and trospium chloride (formerly known as KarXT), a novel M/M muscarinic receptor agonist, demonstrated efficacy across phase 2 and 3 trials as monotherapy for the treatment of inpatients with acute schizophrenia on the Positive and Negative Syndrome Scale total score primary endpoint. In the phase 2 trial, xanomeline/trospium improved performance on a cognitive outcome measure in the subgroup of participants with clinically significant baseline cognitive impairment. The authors sought to confirm this finding using data from two phase 3 trials.

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Background: Decrements in energy are a significant problem associated with chemotherapy. To date, no study examined the variability of energy in patients with gynecologic cancers.

Objective: To identify distinct morning and evening energy profiles in patients with gynecologic cancers and evaluate for differences in demographic and clinical characteristics, other common symptoms, and quality-of-life (QOL) outcomes.

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Article Synopsis
  • - The study aimed to find different psychological profiles among cancer patients at the start of the COVID-19 pandemic through an online survey.
  • - Researchers identified three distinct subgroups of patients based on their levels of anxiety, depression, and resilience, highlighting that younger females with recent breast cancer diagnoses were more likely to be in the high-risk categories.
  • - The results suggest that these findings can help healthcare professionals identify patients at higher risk for psychological issues and provide them with more effective support and interventions.
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A brief history of events surrounding the conceptualization and original implementation of the Alzheimer's Disease Neuroimaging Initiative (ADNI) as a public-private partnership (PPP) is provided from the perspective of three individuals directly involved from the outset. Potential barriers and how they were addressed are summarized, especially the decision to make all data freely accessible in real-time. Decisions made at the beginning of ADNI are revisited in light of what has been learned over the past 20 years, especially the importance of the investment in cerebrospinal fluid (CSF) and blood measures and the commitment to data sharing.

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Neuroinflammation has been implicated in the pathogenesis of several neurologic and psychiatric disorders. Microglia are key drivers of neuroinflammation and, in response to different inflammatory stimuli, overexpress a proinflammatory signature of genes. Among these, Ch25h is a gene overexpressed in brain tissue from Alzheimer's disease as well as various mouse models of neuroinflammation.

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Schizophrenia is a complex syndrome with taxing symptoms and for which treatment challenges remain. Current dopamine Dreceptor-blocking antipsychotics have well-known limitations, including ineffectively treating across all symptom domains and generating common side effects such as motor disturbances, weight gain, and metabolic dysfunction. New approaches are sorely needed to address the continued unmet treatment needs for individuals living with schizophrenia.

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Objectives: Evidence suggests that lower levels of morning energy are associated with higher levels of stress and lower levels of resilience in patients receiving chemotherapy. Study purposes were to identify subgroups of patients with distinct morning energy profiles; evaluate for differences among the profiles in demographic and clinical characteristics, as well as measures of stress, resilience, and coping.

Methods: A total of 1,343 outpatients receiving chemotherapy completed a demographic questionnaire and measures of global, cancer-related, and cumulative life stress, and resilience at study enrollment.

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Objectives: Shortness of breath is a common symptom in patients with cancer. However, the mechanisms that underlie this troublesome symptom are poorly understood. Therefore, this study aimed to determine the prevalence of and associated risk factors for shortness of breath in women prior to breast cancer surgery and identify associations between shortness of breath and polymorphisms for potassium channel genes.

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Background: Individuals who undergo chemotherapy for cancer are at elevated risk of developing depressive symptoms, yet substantial interindividual variation exists in trajectories of these symptoms.

Objective: To examine interindividual variations in trajectories of depressive symptoms during 2 cycles of chemotherapy and to evaluate associations between demographic and clinical characteristics, symptom severity scores, psychological adjustment characteristics (eg, stress and coping), and initial levels and trajectories of depressive symptoms.

Methods: Patients (n = 1323) diagnosed with breast, gynecologic, lung, or gastrointestinal cancer completed the Center for Epidemiological Studies-Depression Scale 6 times, over 2 cycles of chemotherapy.

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Objectives: To identify subgroups of patients with distinct chemotherapy-induced vomiting (CIV) profiles; determine how these subgroups differ on several demographic, clinical, and symptom characteristics; and evaluate factors associated with chemotherapy-induced nausea and CIV profiles.

Sample & Setting: Adult patients (N = 1,338) receiving cancer chemotherapy.

Methods & Variables: Data were collected on demographic, clinical, and symptom characteristics.

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Objectives: To evaluate for associations between the occurrence of palpitations reported by women prior to breast cancer surgery and single nucleotide polymorphisms (SNPs) for neurotransmitter genes.

Sample & Setting: A total of 398 women, who were scheduled for unilateral breast cancer surgery, provided detailed information on demographic and clinical characteristics and the occurrence of palpitations prior to breast cancer surgery.

Methods & Variables: The occurrence of palpitations was assessed using a single item (i.

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Objectives: To identify subgroups of patients with distinct cough occurrence profiles and evaluate for differences among these subgroups.

Sample & Setting: Outpatients receiving chemotherapy (N = 1,338) completed questionnaires six times over two chemotherapy cycles.

Methods & Variables: Occurrence of cough was assessed using the Memorial Symptom Assessment Scale.

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Pro-inflammatory changes contribute to multiple neuropsychiatric illnesses. Understanding how these changes are involved in illnesses and identifying strategies to alter inflammatory responses offer paths to potentially novel treatments. We previously found that acute pro-inflammatory stimulation with high (μg/ml) lipopolysaccharide (LPS) for 10-15 min dampens long-term potentiation (LTP) in the hippocampus and impairs learning.

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Article Synopsis
  • Researchers aimed to identify groups of women with different energy profiles over a year post-surgery, compare their demographics and clinical traits, and explore genetic factors linked to low energy.
  • Three energy levels were identified: Low (27%), Moderate (54.4%), and Changing (18.6%). Key genetic variants were associated with lower energy, indicating that cytokine genes play a role in ongoing fatigue after surgery.
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Article Synopsis
  • There is a critical demand for new antipsychotic medications that are more effective and have fewer side effects; xanomeline, a new muscarinic receptor agonist, shows promise in this area, especially when paired with trospium chloride to minimize side effects.
  • The EMERGENT-3 trial tested xanomeline-trospium against a placebo in adults with schizophrenia experiencing acute psychosis, taking place at multiple sites in the US and Ukraine from April to December 2022.
  • The study aimed to measure changes in psychiatric symptoms using the Positive and Negative Syndrome Scale (PANSS) and assess safety, with results expected to contribute to new treatment options for schizophrenia.
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Objectives: To evaluate for associations of polymorphisms for potassium channel genes in patients with breast cancer who were classified as having high or low-moderate levels of cancer-related cognitive impairment (CRCI).

Sample & Setting: 397 women who were scheduled to undergo surgery for breast cancer on one breast were recruited from breast care centers located in a comprehensive cancer center, two public hospitals, and four community practices.

Methods & Variables: CRCI was assessed using the Attentional Function Index prior to and for six months after surgery.

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Objectives: To evaluate for differences in global, cancer-specific, and cumulative life stress, as well as resilience and use of various coping strategies among five groups (no depression or sleep disturbance, no depression and moderate sleep disturbance, subsyndromal depression and very high sleep disturbance, moderate depression and moderate sleep disturbance [Both Moderate]; and high depression and very high sleep disturbance [Both High]).

Sample & Setting: Patients (N = 1,331) receiving chemotherapy were recruited from outpatient oncology clinics.

Methods & Variables: Measures of global, cancer-specific, and cumulative life stress, resilience, and coping were obtained.

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Brain cholesterol metabolic products include neurosteroids and oxysterols, which play important roles in cellular physiology. In neurons, the cholesterol oxidation product, 24S-hydroxycholesterol (24S-HC), is a regulator of signaling and transcription. Here, we examined the behavioral effects of 24S-HC loss, using global and cell-selective genetic deletion of the synthetic enzyme CYP46A1.

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Article Synopsis
  • Despite decades of drug development, finding effective treatments for schizophrenia remains tough, with most antipsychotics providing only modest benefits.
  • Most currently approved medications mainly target dopamine D receptors, showing limited effectiveness, especially for cognitive and negative symptoms.
  • There is growing interest in developing new treatments that target muscarinic acetylcholine receptors, with promising research suggesting that drugs like xanomeline may improve outcomes for people with schizophrenia.
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Purpose: Identify subgroups of patients with distinct joint anxiety AND depression profiles and evaluate for differences in demographic and clinical characteristics, as well as stress, resilience, and coping.

Design: Longitudinal study.

Participants: Patients ( = 1328) receiving chemotherapy.

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Objectives: To evaluate differences among stress, resilience, and coping strategies related to morning and evening fatigue profiles (both low, low morning and moderate evening, both moderate, and both high).

Sample & Setting: Data were collected from 1,334 adult patients with cancer receiving chemotherapy.

Methods & Variables: Morning and evening fatigue severity were rated over two cycles of chemotherapy using the Lee Fatigue Scale.

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Alzheimer's disease (AD) is characterized by amyloid plaques and neurofibrillary tangles, in addition to neuroinflammation and changes in brain lipid metabolism. 25-Hydroxycholesterol (25-HC), a known modulator of both inflammation and lipid metabolism, is produced by cholesterol 25-hydroxylase encoded by Ch25h expressed as a "disease-associated microglia" signature gene. However, whether Ch25h influences tau-mediated neuroinflammation and neurodegeneration is unknown.

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Background: Shortness of breath occurs in 10%-70% of oncology patients. Very little is known about interindividual variability in its severity and distress and associated risk factors. Using latent profile analyses (LPAs), purpose was to identify subgroups of patients with distinct severity and distress profiles for shortness of breath as single symptom dimensions.

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