Publications by authors named "Hannah Peterson"

Article Synopsis
  • Research indicates that structural and functional brain changes are linked to opioid use disorder (OUD), but earlier studies often had small participant groups, especially fewer women, and focused on single types of brain analysis.
  • This study aimed to use comprehensive brain imaging techniques, including T1-weighted MRI and resting-state fMRI, to better identify these brain alterations in OUD patients undergoing methadone treatment compared to healthy controls.
  • Results showed significant differences in brain volumes between the two groups, with OUD participants having smaller thalamus and temporal lobe sizes but larger brainstem and cerebellum volumes, and there were sex-based differences in the medial prefrontal cortex volumes.
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Article Synopsis
  • Major risk factors for urothelial cell carcinoma (UCC) include smoking and occupational exposures, but 30% of cases are still unexplained; pet dogs may serve as models for studying non-tobacco UCC risk due to their similar disease behavior.
  • Researchers exposed human and canine urothelial cells to acrolein and inorganic arsenic to explore DNA damage, finding specific genotoxic thresholds for each substance.
  • The study indicated that non-tobacco exposure to acrolein could lead to early DNA damage in both humans and dogs, warranting further investigation into these chemical exposures in relation to UCC.
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(1) Background: The purpose of this study is to compare the rate of COVID-19 vaccination among psoriasis patients internationally and to correlate it with their treatment regimens. (2) Methods: We conducted a cross-sectional study from January 2021 to October 2022 among adults in the United States (US), Chile, China, Switzerland, and Singapore using the Global Healthcare Study on Psoriasis survey. (3) Results: A total of 310 psoriasis patients in the US (98), Chile (32), China (80), Switzerland (39), and Singapore (61) were surveyed.

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Background: Psoriasis patients experience physical and emotional burdens, which may lead to work-related productivity loss. This loss carries professional and financial repercussions. It is unknown whether the extent of psoriasis affects work absenteeism.

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Multiplexed bead assays for solution-phase biosensing often encounter cross-over reactions during signal amplification steps, leading to unwanted false positive and high background signals. Current solutions involve complex custom-designed and costly equipment, limiting their application in simple laboratory setup. In this study, we introduce a straightforward protocol to adapt a multiplexed single-bead assay to standard fluorescence imaging plates, enabling the simultaneous analysis of thousands of reactions per plate.

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Background: Psoriasis is a chronic disease with increased risk of numerous comorbidities. Known differences exist regarding treatment outcomes for psoriasis patients with skin of color (SOC). However, factors contributing to these differences are relatively unknown.

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Quality of life impairment in dermatology patients and severity of psoriasis are quantified by the Dermatology Life Quality Index (DLQI) and the Psoriasis Area and Severity Index (PASI), respectively. The aim of this study is to compare the correlation between PASI and DLQI in patients from different geographical areas and to identify predictors of high DLQI across geographical regions. Correlations between PASI and DLQI were evaluated using Spearman's rank correlation tests and quantile regression.

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Objectives: Opioid use disorder (OUD) impacts millions of people worldwide. The prevalence and debilitating effects of OUD present a pressing need to understand its neural mechanisms to provide more targeted interventions. Prior studies have linked altered functioning in large-scale brain networks with clinical symptoms and outcomes in OUD.

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Background: Hidradenitis suppurativa (HS) is a painful, chronic inflammatory skin disease that negatively affects patient quality of life, and conventional treatments are variably effective. As a result, patients often turn to complementary and alternative medicine (CAM) for pain relief. Social media enables HS patients to share treatment recommendations.

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Urothelial cell carcinoma (UCC) has been linked to environmental chemical exposures in people, but these risk factors are not well understood in dogs with UCC. We hypothesised that household chemical exposures contribute to the risk of UCC in pet dogs. This prospective cross-sectional case-control study included 37 dogs with UCC and 37 unaffected breed-, sex-, and age-matched controls.

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To defend against damage from environmental stress, plants have evolved strategies to respond to stress efficiently. One such strategy includes forming mutualist relationships with endophytes which confer stress-alleviating plant defensive and growth promoting effects. Metarhizium robertsii is an entomopathogen and plant-protective and growth-promoting endophyte.

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infections are a significant concern in people with CF and other immunocompromising disorders, and are difficult to treat with conventional antibiotics due to their inherent drug resistance. Bacteriophages, or bacterial viruses, are now seen as a potential alternative therapy for these infections, but most of the naturally occurring phages are temperate and have narrow host ranges, which limit their utility as therapeutics. Here we describe the temperate phage Milagro and our efforts to engineer this phage into a potential therapeutic by expanding the phage host range and selecting for phage mutants that are strictly virulent.

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Introduction: Alpha-gal syndrome (AGS) is a hypersensitivity disorder in which tick bites-most commonly from the lone star tick ()-trigger immunoglobulin E-mediated hypersensitivity reaction upon exposure to oligosaccharide galactosse-alpha-1,3-galactose (α-gal). α-gal is most notorious for being found in "red meat" products but is present in mammalian meats such as beef, pork, lamb, rabbit, and others. Manifestations of AGS hypersensitivity are variable.

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The efficient activation of professional antigen-presenting cells-such as dendritic cells (DC)-in tumors and lymph nodes is critical for the design of next-generation cancer vaccines and may be able to provide anti-tumor effects by itself through immune stimulation. The challenge is to stimulate these cells without causing excessive toxicity. It is hypothesized that a multi-pronged combinatorial approach to DC stimulation would allow dose reductions of innate immune receptor-stimulating TLR3 agonists while enhancing drug efficacy.

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Acne is a prevalent chronic inflammatory disease that can cause severe psychiatric effects and physical scarring of the skin. Historically, although systemic antiandrogen acne medications have been effective in women, the utility of these systemic medications has been limited due to potential systemic side effects in men and pregnant women. Therefore, research has been focused on developing topical formulations of antiandrogen therapy for acne.

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Functional near-infrared spectroscopy (fNIRS) promises to be a leading non-invasive neuroimaging method due to its portability and low cost. However, concerns are rising over its inclusivity of all skin tones and hair types (Parker and Ricard, 2022, Webb et al., 2022).

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