Publications by authors named "Schmidt R"

Breast augmentations, commonly performed for aesthetic or medical reasons, often use silicone (polydimethylsiloxane [PDMS]) implants. Some patients develop complications like capsular contracture, where scar tissue forms around the implant. Previously, we used stimulated Raman scattering (SRS) microscopy to detect and quantify silicone in stained capsule tissue, finding a correlation between silicone amount and contracture severity.

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Background: Oral Pre-exposure prophylaxis (PrEP) is effective in preventing HIV transmission. However, despite high rates of HIV risk behaviors among people who inject drugs (PWID), this population remains underserved by current HIV prevention efforts in the United States. To address this challenge, we conducted an in-depth exploration of perspectives on using oral PrEP among PWID engaged in the HIV Prevention Trials Network (HPTN) 094 INTEGRA Study.

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Background: Autism Spectrum Disorder (ASD) is an increasing concern globally, with risks attributed to both genetic and environmental factors, including pesticide exposures. The CHARGE case-control study collected data to examine the relationship between household insecticide use and ASD or developmental delay (DD).

Methods: Participants (n = 1526) aged 2-5 years from the CHARGE study encompassed children with clinically confirmed ASD (n = 810), DD (n = 186), and typically developing controls (n = 530) frequency matched to ASD children by age, sex, and geographic region.

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Importance: Safer supply programs were implemented in Canada to provide pharmaceutical-grade alternatives to the toxic unregulated drug supply. While research shows clinical benefits and reduced overdose mortality among safer supply patients, medication diversion remains a concern.

Objective: To examine provider (prescribing clinicians and allied health professionals) and patient perspectives on diversion of opioids prescribed in safer supply programs.

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  • The research explores how to trigger superconductivity in very thin semiconductor materials using excitons to create an effective attraction between electrons, expanding beyond traditional phonon-mediated superconductivity.
  • By including interactions related to trions, the study shows that the electron-exciton interaction varies significantly with frequency and momentum, leading to a transition between weakly bound Cooper pairs and a superfluid state of bipolarons.
  • Despite the complexity of strong-coupling conditions, the resulting bipolarons are lightweight, allowing for critical temperatures that can reach up to 10% of the Fermi temperature, suggesting that two-dimensional material heterostructures could be valuable for achieving high-temperature superconductivity when electron doping and trion effects are optimized.
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The ethical use of laboratory animals requires that the benefits of an experimental study are carefully weighed against potential harm to the animals. In traumatic brain injury (TBI) research, ethical concerns are especially relevant to severe TBI, after which animals may experience suffering, depending on the implementation of refinement measures such as (1) postsurgical analgesia during the initial period following TBI and (2) humane endpoints. However, despite the frequent use of rodent models such as fluid percussion injury (FPI) and controlled cortical impact (CCI) in rats or mice, there is only one recent study that applied assessment of welfare to a severe TBI model, the FPI model in rats.

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Setting: The crisis of unregulated fentanyl-related overdose deaths presents a significant public health challenge. This article describes the implementation and evaluation of four Safer Opioid Supply programs (SSPs) in Ontario, one in London and three in Toronto.

Intervention And Implementation: SSPs aim to curtail overdose fatalities while connecting individuals using drugs to healthcare services.

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Background And Objectives: To evaluate the oncology outcomes in cervical cancer patients aged 25 years or younger and compare them with those in older patients.

Methods: Cervical cancer patients were retrospectively analyzed and divided into two groups: young patients (≤25 years) and older patients (>25 years). For each young patient, two controls were selected from the database of cervical cancer patients aged over 25 years, matched by FIGO stage, treatment, and histologic type.

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Human papillomavirus (HPV) integration has been implicated in transforming HPV infection into cancer. To resolve genome dysregulation associated with HPV integration, we performed Oxford Nanopore long-read sequencing on 72 cervical cancer genomes from an Ugandan dataset that was previously characterized using short-read sequencing. We found recurrent structural rearrangement patterns at HPV integration events, which we categorized as: del(etion)-like, dup(lication)-like, translocation, multibreakpoint, or repeat region integrations.

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Very small superparamagnetic iron oxide nanoparticles (VSOPs) show diagnostic value in multiple diseases as a promising MRI contrast agent. Macrophages predominantly ingest VSOPs, but the mechanism remains unclear. This study identifies differences in VSOP uptake between pro-inflammatory M1 and anti-inflammatory M2 macrophages and explores the role of the pericellular glycocalyx.

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  • White matter hyperintensities (WMH) increase with age and vary significantly between individuals, prompting the need for age- and sex-specific data for better assessment.
  • This study pooled data from nearly 15,000 healthy individuals aged 18-97 to analyze WMH volumes using MRI and established centile curves based on age and sex.
  • Findings reveal that WMH volumes increase significantly with age, with females having larger volumes, and these changes follow different patterns based on specific white matter locations, providing valuable normative data for clinical interpretations.
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  • A study investigated how prenatal dietary patterns affect child outcomes related to autism, analyzing data from up to 6084 participants across 14 cohorts.
  • Results showed that higher scores on healthy eating indices were linked to lower scores on the Social Responsiveness Scale (SRS), indicating a potential connection between better prenatal diets and social behaviors in children.
  • However, there were no significant links found between prenatal diets and official autism diagnoses, suggesting that while diet may influence some traits, more research is needed to clarify its effects on autism-related conditions.
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The Albumin-to-Alkaline Phosphatase ratio (AAPR) is an easily applicable and cost-effective marker investigated as an outcome predictor in solid cancers. Preliminary evidence in breast cancer suggests that a low AAPR correlates with a poor response to neoadjuvant chemotherapy (NAC) in primary tumors. However, data regarding the axillary response are lacking.

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Background And Objective: Proximal spinal muscular atrophy (SMA) is caused by deficiency of the ubiquitously expressed survival motor neuron protein. Although primarily a hereditary lower motor neuron disease, it is probably also characterized by abnormalities in other organs. Brain abnormalities and cognitive impairment have been reported in severe SMA.

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  • The study investigates how prenatal dietary quality, assessed through the Healthy Eating Index (HEI) and Empirical Dietary Inflammatory Pattern (EDIP), impacts infant sizes at birth and growth patterns up to age 24 months.
  • Researchers analyzed data from 2854 parent-child pairs participating in a long-term health program, highlighting the diverse racial and ethnic backgrounds of the participants.
  • Results revealed that a healthier diet during pregnancy (high HEI score) is linked to lower likelihoods of having large infants at birth and experiencing rapid growth, suggesting that dietary choices may play a vital role in combating obesity later in life.
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Since the first use of embolization for cerebral arteriovenous malformations (AVMs) by Luessenhop and Spence in 1960, this procedure has become a cornerstone in the multimodal treatment approach for brain AVMs. Currently, in the United States, the main embolic agents employed are n-butyl cyanoacrylate (NBCA) and Onyx (Medtronic, Minneapolis, MN). This systematic review and meta-analysis aim to compare these two agents in terms of efficacy and safety.

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Alterations in subcortical brain regions are linked to motor and non-motor symptoms in Parkinson's disease (PD). However, associations between clinical expression and regional morphological abnormalities of the basal ganglia, thalamus, amygdala and hippocampus are not well established. We analyzed 3D T1-weighted brain MRI and clinical data from 2525 individuals with PD and 1326 controls from 22 global sources in the ENIGMA-PD consortium.

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Modulation of immune tone at mucosal surfaces is critical to maintain homeostasis while facilitating the handling of emerging threats. One dynamic component of immune modulation is the phagocytosis and clearance of apoptotic bodies known as efferocytosis that inhibits inflammation by promoting its resolution. Here, we evaluated the effects of apoptotic body phagocytosis by intestinal epithelial stem and progenitor cells (ISCs).

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Objective: Avoidant/restrictive food intake disorder (ARFID) is an eating disorder characterized by a severely restrictive diet leading to significant physical and/or psychosocial sequelae. Largely owing to the phenotypic heterogeneity, the underlying pathophysiological mechanisms are relatively unknown. Recently, the communication between microorganisms within the gastrointestinal tract and the brain-the so-called microbiota-gut-brain axis-has been implicated in the pathophysiology of eating disorders.

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Background: It is estimated that there are >18 million cancer survivors in the United States, and there is a growing number of survivorship programs across the country to care for these individuals. There is a clear need for survivorship care; however, evidence is still emerging on how to best operationalize the guidance from nationally recognized organizations and clinical practice guidelines.

Methods: The NCCN Best Practices Committee (BPC) recently conducted a survey to better understand survivorship clinics at NCCN Member Institutions.

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Amyloid-beta (Aβ) antibody treatment has emerged as a promising approach for the treatment of Alzheimer's disease (AD), targeting the accumulation of Aβ plaques, which are a hallmark of the disease. This review provides an update on recent clinical trial data, highlighting the efficacy and safety of various antibodies targeting Aβ. Recent trials have demonstrated that certain Aβ antibodies can reduce amyloid plaques and slow cognitive decline in patients with early AD.

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Article Synopsis
  • Birth asphyxia (BA) can lead to serious complications like hypoxic-ischemic encephalopathy (HIE), resulting in disabilities such as cerebral palsy and epilepsy in infants.
  • Researchers used a rat model to investigate the development of epilepsy and the effectiveness of midazolam treatment after BA, finding that seizure occurrence increased significantly over time in untreated rats.
  • Midazolam treatment not only reduced spontaneous recurrent seizures in the adult rats but also showed potential protective effects against brain damage and cognitive impairments caused by asphyxia.
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