Celiac Disease and the Risk of Micronutrient Deficiencies in Ethnic Minority Populations: A Retrospective Cohort Study.

Introduction Celiac disease (CD) is a chronic immune mediated disorder triggered by gluten ingestion in genetically predisposed individuals. Historically, CD was primarily recognized and described as a disease of the Caucasian population. Data from a national survey in 2015 revealed that 0.79% of the population was formally diagnosed with celiac disease, with the Non-Hispanic white population having a prevalence of 4-8 times higher than other underrepresented races. Although there is evidence that CD affects minorities at higher than reported rates, there is little data on it's effects on minority populations. Our study aimed to characterize celiac-related complications among underrepresented populations in a large health database. Methods We performed a cohort study among patients aged ≥ 18, utilizing the TriNetX US Collaborative Network. Two cohorts of patients (minority and Non-Hispanic white) with CD were identified between 2016 and 2021. Cohorts were propensity score matched on demographics and baseline clinical characteristics. Outcomes were assessed up to one year after the index event (CD diagnosis), including vitamin/mineral deficiencies and hospital visits. Data were analyzed using the TriNetX Analytics function. Results Each group was matched with 817 patients. Compared to the Non-Hispanic White population, the minority group had a similar incidence of iron, vitamin B, and zinc deficiencies. The minority group had a higher risk of vitamin D deficiency, anemia secondary to iron deficiency, inpatient hospital stays, and emergency department visits. Conclusion Our results indicate that minority patients with celiac disease have a higher incidence of vitamin D and iron deficiency.

AMPED study: Protocol for a randomized controlled trial of different doses of aerobic exercise training.

Recently renamed, metabolic dysfunction-associated steatotic liver disease remains a leading cause of chronic liver disease worldwide. Regular physical activity is recommended as a treatment for all with this condition because it is highly efficacious, especially when exercise training is undertaken with a specific goal in mind. Despite decades of research demonstrating exercise's efficacy, key questions remain about the mechanism of benefit and most efficacious dose, as well as the independent impact on liver histology. To answer these questions, we present the design of a 16-week randomized controlled clinical trial of 45 adults aged 18-69 years with metabolic dysfunction-associated steatohepatitis. The primary aim of this study is to better understand the dose required and mechanisms to explain how exercise impacts multiple clinical end points in metabolic dysfunction-associated steatohepatitis. The primary outcome is MRI-measured liver fat. Secondary outcomes include other biomarkers of liver fibroinflammation, liver histology, and mechanistic pathways, as well as cardiometabolic risk and quality of life. This is the first study to compare different doses of exercise training to determine if there is a differential impact on imaging and serum biomarkers as well as liver histology.

Exercise Is Medicine for Nonalcoholic Fatty Liver Disease: Exploration of Putative Mechanisms.

Exercise remains a key component of nonalcoholic fatty liver disease (NAFLD) treatment. The mechanisms that underpin improvements in NAFLD remain the focus of much exploration in our attempt to better understand how exercise benefits patients with NAFLD. In this review, we summarize the available scientific literature in terms of mechanistic studies which explore the role of exercise training in modulating fatty acid metabolism, reducing hepatic inflammation, and improving liver fibrosis. This review highlights that beyond simple energy expenditure, the activation of key receptors and pathways may influence the degree of NAFLD-related improvements with some pathways being sensitive to exercise type, intensity, and volume. Importantly, each therapeutic target of exercise training in this review is also the focus of previous or ongoing drug development studies in patients with nonalcoholic steatohepatitis (NASH), and even when a regulatory-agency-approved drug comes to market, exercise will likely remain an integral component in the clinical management of patients with NAFLD and NASH.

Exercise Training Is Associated With Treatment Response in Liver Fat Content by Magnetic Resonance Imaging Independent of Clinically Significant Body Weight Loss in Patients With Nonalcoholic Fatty Liver Disease: A Systematic Review and Meta-Analysis.

INTRODUCTION: Exercise training is crucial in the management of nonalcoholic fatty liver disease (NAFLD); however, whether it can achieve clinically meaningful improvement in liver fat is unclear. We investigated the association between exercise training and the achievement of validated thresholds of MRI-measured treatment response. METHODS: Randomized controlled trials in adults with NAFLD were identified through March 2022. Exercise training was compared with no exercise training. The primary outcome was ≥30% relative reduction in MRI-measured liver fat (threshold required for histologic improvement in nonalcoholic steatohepatitis activity, nonalcoholic steatohepatitis resolution, and liver fibrosis stage). Different exercise doses were compared. RESULTS: Fourteen studies (551 subjects) met inclusion criteria (mean age 53.3 yrs; body mass index 31.1 kg/m 2 ). Exercise training subjects were more likely to achieve ≥30% relative reduction in MRI-measured liver fat (odds ratio 3.51, 95% confidence interval 1.49-8.23, P = 0.004) than those in the control condition. An exercise dose of ≥750 metabolic equivalents of task min/wk (e.g., 150 min/wk of brisk walking) resulted in significant treatment response (MRI response odds ratio 3.73, 95% confidence interval 1.34-10.41, P = 0.010), but lesser doses of exercise did not. Treatment response was independent of clinically significant body weight loss (>5%). DISCUSSION: Independent of weight loss, exercise training is 3 and a half times more likely to achieve clinically meaningful treatment response in MRI-measured liver fat compared with standard clinical care. An exercise dose of at least 750 metabolic equivalents of task-min/wk seems required to achieve treatment response. These results further support the weight-neutral benefit of exercise in all patients with NAFLD.

Physical Activity and Risk of Hepatocellular Carcinoma: A Systematic Review and Meta-Analysis.

BACKGROUND & AIMS: Physical activity offers promise to protect against multiple non-hepatic primary cancers. We performed a systematic review to quantify the association between physical activity and hepatocellular carcinoma (HCC) risk. METHODS: We searched the Cochrane Library, Embase, Medline and trial registries through December 2020 for studies that measured physical activity levels in adults at risk for HCC. The primary outcome was HCC. Subgroup analysis was performed limiting to vigorous physical activity. Proportions and random-effects odds ratios (OR) with corresponding 95% confidence intervals (CI) were calculated. RESULTS: Seven studies met inclusion criteria, comprising 777,662 subjects (median age 55 years; 55% female). Greater amounts of physical activity were associated with less HCC (OR 0.65, 95% CI 0.45-0.95, p = 0.03) compared to lower amounts. Vigorous physical activity was associated with even less HCC (OR 0.62, 95% CI 0.49-0.79, p < 0.01). CONCLUSIONS: This meta-analysis demonstrates that greater amounts of physical activity are associated with lower odds of HCC. These results support the use of regular physical activity as an effective way to prevent HCC and provide helpful data to support a for future exercise-based interventional study to better define the optimal exercise prescription for patients at risk for primary liver cancer.

Post-polypectomy follow-up recommendations by practicing academic gastroenterologists-does number of years in practice matter?

AIM: Colorectal cancer (CRC) is the third most deadly and fourth most common cancer worldwide. Early detection, resection, and appropriate surveillance of precursor polyps result in better outcomes. Colonoscopy is a safe, accurate, and effective tool for surveillance and follow-up of premalignant polyps. Recommended surveillance intervals are based on polyp, procedural, and patient-related factors. The United States Multi-Society Task Force (MSTF) on CRC publishes guidelines with periodic updates on surveillance. We sought to evaluate adherence to post-polypectomy surveillance guidelines by academic gastroenterologists at a high-volume center. METHODS: One-year retrospective study evaluating compliance with post-polypectomy recommendations after average risk adult screening colonoscopies. Data was collected on number and size of polyps, quality of bowel prep, initial follow-up recommendations, polyp pathology, and follow-up recommendations. Correlation with the 2012 MSTF guidelines was also evaluated. Endoscopist experience was categorized as greater or less than 10 years of practice experience. Binomial regression was used to model the association between the providers' years of experience (<10 vs. >10) and the likelihood of agreement between initial assessment and post-pathology assessment. RESULTS: There was a greater than 85% adherence to post-polypectomy surveillance guidelines, independent of endoscopist experience. CONCLUSION: There is a high level of adherence to post-polypectomy guidelines by practicing academic gastroenterologists independent of post-fellowship clinical experience.

Physiologic Response to the Pfizer-BioNTech COVID-19 Vaccine Measured Using Wearable Devices: Prospective Observational Study.

BACKGROUND: The Pfizer-BioNTech COVID-19 vaccine uses a novel messenger RNA technology to elicit a protective immune response. Short-term physiologic responses to the vaccine have not been studied using wearable devices. OBJECTIVE: We aim to characterize physiologic changes in response to COVID-19 vaccination in a small cohort of participants using a wearable device (WHOOP Strap 3.0). This is a proof of concept for using consumer-grade wearable devices to monitor response to COVID-19 vaccines. METHODS: In this prospective observational study, physiologic data from 19 internal medicine residents at a single institution that received both doses of the Pfizer-BioNTech COVID-19 vaccine was collected using the WHOOP Strap 3.0. The primary outcomes were percent change from baseline in heart rate variability (HRV), resting heart rate (RHR), and respiratory rate (RR). Secondary outcomes were percent change from baseline in total, rapid eye movement, and deep sleep. Exploratory outcomes included local and systemic reactogenicity following each dose and prophylactic analgesic use. RESULTS: In 19 individuals (mean age 28.8, SD 2.2 years; n=10, 53% female), HRV was decreased on day 1 following administration of the first vaccine dose (mean -13.44%, SD 13.62%) and second vaccine dose (mean -9.25%, SD 22.6%). RHR and RR showed no change from baseline after either vaccine dose. Sleep duration was increased up to 4 days post vaccination, after an initial decrease on day 1. Increased sleep duration prior to vaccination was associated with a greater change in HRV. Local and systemic reactogenicity was more severe after dose two. CONCLUSIONS: This is the first observational study of the physiologic response to any of the novel COVID-19 vaccines as measured using wearable devices. Using this relatively small healthy cohort, we provide evidence that HRV decreases in response to both vaccine doses, with no significant changes in RHR or RR. Sleep duration initially decreased following each dose with a subsequent increase thereafter. Future studies with a larger sample size and comparison to other inflammatory and immune biomarkers such as antibody response will be needed to determine the true utility of this type of continuous wearable monitoring in regards to vaccine responses. Our data raises the possibility that increased sleep prior to vaccination may impact physiologic responses and may be a modifiable way to increase vaccine response. These results may inform future studies using wearables for monitoring vaccine responses. TRIAL REGISTRATION: ClinicalTrials.gov NCT04304703; https://www.clinicaltrials.gov/ct2/show/NCT04304703.

P070 Next Generation Wearable Technology for IBD Patients: A Feasibility Study.

BACKGROUND: Inflammatory Bowel Disease (IBD) prevalence is rising. Quality of life (QOL) in chronic illness is affected by various physical and psychosocial factors. Recent studies in other chronic illnesses have used remote physiologic monitoring (RPM) to help predict changes in disease activity and provide opportunities for patient self-management. It has been proposed that bowel inflammation can lead to suboptimal sleep, circadian rhythm disruption and even additional immune system activation. Heart rate variability (HRV) is a validated metric that has been used to predict outcomes and help manage other disease states. To date, there is limited data on the benefit of RPM in IBD care. We wish to explore the potential benefit of the Whoop Strap (new wearable technology device) as a method of RPM for IBD patients. METHODS: We recruited patients with Ulcerative Colitis from our tertiary care IBD center 18 years and older willing to wear the Whoop Strap 3.0 for 12 months with support from the Penn State Hershey Medical Center, 2020 Department of Medicine House Staff Grant; Clinical Trial Identifier is NCT04333810. During this time, participants were encouraged to use the Whoop mobile application to record symptoms. Physiologic metrics of interest included sleep, resting heart rate (RHR), and HRV; each were correlated to IBD related symptoms. Additionally, we performed monthly "check-ins" to collect disease activity (SCCAI), mood (HADS) and stress (PSS4) questionnaire data. Descriptive statistics were utilized along with correlation coefficient testing to explore potential relationships between Whoop metrics, disease activity scores and patient reported outcomes. RESULTS: Enrollment is ongoing with 7 participants, one of which was lost to follow up. Of note, 2 patients proactively reached out to communicate concern for an underlying disease flare as they noticed significant change in their Whoop metrics in conjunction with worrying symptoms. Patient 1 subsequently had serologic testing after having increased HRV and elevated RHR several days prior to symptoms; results were consistent with active inflammation exhibiting a rise in C-reactive protein from 0.25 mg/dL in 2020 to 2.82 mg/dL. Fecal calprotectin was also elevated at 566 ug/g. Colonoscopy is scheduled for the near future. Patient 2 also had noticeable HRV and RHR changes alongside significant sleep disturbances, which has prompted additional testing. CONCLUSION: Remote physiologic monitoring is a feasible way to give patients ownership of their medical care and involve them in the diagnostic and treatment process of their underlying IBD. As exhibited with our preliminary results, the Whoop device appears easy to use and may empower patients to reach out to providers even before symptoms occur, leading to an expedited evaluation for increased disease activity. Our feasibility study will hopefully lead to larger prospective efforts utilizing wearable technology devices such as the Whoop in IBD patients.