Publications by authors named "Sohn A"

Objective: To investigate barriers to healthcare access and utilization among patients with noninfectious uveitis (NIU) across different racial and ethnic groups.

Design: Retrospective cross-sectional study.

Subjects: Participants diagnosed with chronic NIU in the nationwide All of Us Research Program.

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Objective: This study aims to determine the association between anthropometric values and laboratory tests with parasitosis diagnosis and identify diagnostic models for parasitosis without relying on copro-parasitological examinations.

Methods: Data were collected from 1894 children aged 0-14 who attended a medical center for low-income children in Lima, Peru, between 2021 and 2022. Anthropometric data (BMI, weight, height), laboratory data (red blood cells, hemoglobin, platelets, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin, eosinophils), and parasitological examination results were analyzed.

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Purpose: To determine the efficacy and safety of repetitive transorbital alternating current stimulation (rtACS) treatment by assessing vision-related quality of life and visual function outcome in subjects treated with rtACS versus sham-control.

Study Design: Double masked, randomized, sham-controlled clinical trial (NCT03188042).

Subjects: Sixteen subjects with moderate-to-advanced glaucoma (visual field [VF] mean deviation [MD] ≤-6.

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Article Synopsis
  • Mental health issues and substance use disorders are prevalent among people living with HIV (PLHIV) and contribute to risky sexual behaviors, especially in the Asia-Pacific region where data is scarce.
  • A study involving 723 adult PLHIV revealed that a significant portion (37%) engaged in medium- to high-risk sexual practices, with such behaviors being more prevalent among younger individuals, those who are unemployed, and those experiencing moderate to severe depression or high-risk substance use.
  • The findings highlight the need for integrating mental health support and substance use harm reduction within HIV care to improve sexual health outcomes in this population.
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Although new pediatric human immunodeficiency virus (HIV) infections have declined in the Asia-Pacific region, coverage of interventions to prevent vertical HIV transmission remains inconsistent. The TREAT Asia pediatric HIV cohort includes data from ∼7700 children and adolescents with HIV (90% perinatally acquired) who have been under care at 18 centers in six Asian countries. Research on their HIV treatment outcomes has been complemented by studies on coinfections and comorbidities.

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Objective: We described mortality and loss to follow-up (LTFU) in children and adolescents who were under care for more than 5 years following initiation of antiretroviral therapy (ART).

Methods: Patients were followed from 5 years after ART until the earlier of their 25th birthday, last visit, death, or LTFU. We used Cox regression to assess predictors of mortality and competing risk regression to assess factors associated with LTFU.

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Quality control and system suitability testing are vital protocols implemented to ensure the repeatability and reproducibility of data in mass spectrometry investigations. However, mass spectrometry imaging (MSI) analyses present added complexity since both chemical and spatial information are measured. Herein, we employ various machine learning algorithms and a novel quality control mixture to classify the working conditions of an MSI platform.

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This study assessed pre-exposure prophylaxis (PrEP) awareness, knowledge, and attitudes in a sample of 1389 men who have sex with men (MSM). Using a self-report survey, we measured PrEP knowledge mean scores, attitudes toward PrEP, and awareness rates to identify the key influences on PrEP uptake. PrEP awareness among participants was 66.

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Few national programs and research cohorts within low- and middle-income countries (LMICs) document transition-related processes and outcomes for adolescents and young adults living with HIV (AYLH) transitioning to adulthood. Between 2017-2020, The Global fRAmework of Data collection Used for Adolescent HIV Transition Evaluation (GRADUATE) project convened a collaborative advisory group to identify key variables and definitions capturing the process, predictors, and outcomes across the transition period. In total, 114 variables identified as essential to measuring AYLH transition-related data were identified and formatted into a GRADUATE Data Exchange Standard (DES), which was added to and harmonized with the existing International epidemiology Databases to Evaluate AIDS (IeDEA) DES.

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Mass spectrometry imaging (MSI) has become a significant tool for measuring chemical species in biological tissues, where much of the impact of these platforms lies in their capability to report the spatial distribution of analytes for correlation to sample morphology. As a result, enhancement of spatial resolution has become a frontier of innovation in the field, and necessary developments are dependent on the ionization source. More particularly, laser-based imaging sources may require modifications to the optical train or alternative sampling techniques.

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Purpose Of Review: To highlight recent data on HPV infection and cervical precancerous lesions in adolescents with HIV, and priorities for primary and secondary HPV prevention.

Recent Findings: Incident and persistent high-risk HPV infections and cervical abnormalities are higher among young women with perinatally acquired HIV compared to their HIV-negative peers; data on HPV among males with perinatally acquired HIV are scarce. HPV vaccination is highly effective in preventing HPV-related disease, but antibody titers may decline in people with HIV.

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This study examined the impact of patient-centered care, satisfaction with the hospital environment, and maternal information-seeking on maternal healthcare satisfaction in Tanzania. A total of 707 mothers who delivered at Chanika Hospital in Tanzania were surveyed using a structured questionnaire. Multiple regression analyses were conducted to identify factors related to maternal satisfaction.

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The COVID-19 pandemic has significantly impacted HIV treatment worldwide, but its effects on South and Southeast Asia, particularly in India, Indonesia, and Thailand, have been less evident. Our aim was to study the perceptions of providers and policymakers to understand how interventions were implemented as part of pandemic responses and how their effectiveness was viewed. We conducted a qualitative study with semi-structured interviews focusing on the shifts in HIV care in response to the pandemic.

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Artemisinin is the leading medication for the treatment of malaria and is only produced naturally in . The localization of artemisinin in both the glandular and non-glandular trichomes of the plant makes it an ideal candidate for mass spectrometry imaging (MSI) as a model system for method development. Infrared matrix-assisted laser desorption electrospray ionization MSI (IR-MALDESI-MSI) has the capability to detect hundreds to thousands of analytes simultaneously, providing abundance information in conjunction with species localization throughout a sample.

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Introduction: The prevalence of atopic diseases remains high. Initial studies suggest that primary prevention with regular basic care may influence the incidence of atopic dermatitis in infants; however, data are unclear. Midwives play an important role in the care of women in the peripartum period and therefore also in providing advice on topics such as skin care, breastfeeding and nutrition of the newborn and young infant.

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Purpose: Prior evidence suggests racial disparities in the utilization of visual field testing (VFT) for the diagnosis and monitoring of glaucoma. In this study, we considered the effect of baseline glaucoma severity and socioeconomic disadvantage along with other potential confounders such as test reliability, ancillary tests, and glaucoma surgeries on racial disparity in the frequency of VFT.

Methods: The records of all subjects with a diagnosis of glaucoma who received VFT at an academic, tertiary care facility from January 2018 to December 2021 were accessed.

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Rationale: Mass spectrometry imaging (MSI) elevates the power of conventional mass spectrometry (MS) to multidimensional space, elucidating both chemical composition and localization. However, the field lacks any robust quality control (QC) and/or system suitability testing (SST) protocols to monitor inconsistencies during data acquisition, both of which are integral to ensure the validity of experimental results. To satisfy this demand in the community, we propose an adaptable QC/SST approach with five analyte options amendable to various ionization MSI platforms (e.

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Article Synopsis
  • Transitioning from pediatric to adult healthcare is difficult for adolescents and young adults with perinatally-acquired HIV (AYA-PHIV) in Thailand.
  • A study tracking treatment outcomes found that 93% of 811 eligible AYA-PHIV were alive, averaging 22.3 years old with 16.1 years of treatment; most received care in adult clinics.
  • Among those who died (7%), the majority were from AIDS-related causes, highlighting the need for improved support systems during their transition into adulthood.
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Background:  Heart failure is a complex clinical syndrome noted on approximately one in eight death certificates in the United States. Vital to reducing complications of heart failure and preventing hospital readmissions is adherence to heart failure self-care routines. Mobile health offers promising opportunities for enhancing self-care behaviors by facilitating tracking and timely reminders.

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Drug use is increasing in South Korea, necessitating evidence-based policy interventions. However, there is a dearth of reliable tools for identifying the personal and psychological factors that drive drug use among Korean adults. In this study, we developed and validated an instrument based on a motivational model to measure drug use motivation in the Korean context.

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Article Synopsis
  • - Tuberculosis (TB) is a major global health issue, especially for people living with HIV, who face high rates of TB-related illness and death, and survivors may experience post-TB lung disease.
  • - The TB Sentinel Research Network (TB-SRN) is set to conduct a study involving 2600 individuals aged 15 and older, both with and without HIV, to evaluate TB treatment outcomes across 16 sites in 11 countries, collecting extensive health-related data over 12 months.
  • - The study has received ethical approval, ensuring participant safety and informed consent procedures, and aims to share its findings with national TB programs to shape future TB policies and practices globally.
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To evaluate the trends in human immunodeficiency virus (HIV)-related knowledge and stigma among men who have sex with men (MSM) in the Republic of Korea between 2012 and 2022, five cross-sectional surveys were conducted. Though general knowledge of HIV infections is high, some misconceptions persist. The initial set of five questions in the survey maintained consistent levels of understanding throughout the five recurring surveys.

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