Faculty Bibliography

BACKGROUND:Conflicting reports exist regarding the racial and the gender distribution of rheumatoid arthritis-related interstitial lung disease (RA-ILD). In a major population study of predominately Whites, RA-ILD was reported mainly among smoker middle-aged men. However, recent data suggest that the disease is that of elderly women. Our study aimed to assess the prevalence and identify the gender differences and clinical characteristics of RA-ILD in a predominantly Black population. METHODS:Cross-sectional analysis of data obtained from the records of 1142 patients with RA diagnosis by ICD codes of which 503 cases met the inclusion criteria for the study. Eighty-six patients had chronic respiratory symptoms of cough and dyspnea and were further assessed by our multidisciplinary group of investigators. Thirty-two subjects with an established diagnosis of rheumatoid arthritis met the diagnostic criteria for interstitial lung disease. RESULTS:). Usual interstitial pneumonia (UIP) was found in 24/32 (75%) of the cases. Seventy-two percent of the RA-ILD patient had seropositive RA. Smoking history was reported in 31.3% of the cohort, gastroesophageal reflux disease (GERD) in 32.3%, and cardiovascular disease (CVD) risk factors in 65.6%. CONCLUSION/CONCLUSIONS:Our study indicates RA-ILD among Blacks is predominantly a disease of elderly females with higher rates of GERD and CVD risk factors. Further studies are needed to identify the pathogenetic differences accounting for the gender distribution of RA-ILD among Black and White populations.Key Points• First study to assess ILD among predominantly Black RA patients.• The prevalence of RA-associated ILD was 6.36%, affecting mostly women in their sixth decade with seropositive disease.• COPD was the most common airway disease among non-RA-ILD Black population.• GERD was found in approximately one-third of patients with RA-associated ILD versus one-fifth of those RA patients without any lung disease.

BACKGROUND:Gastrointestinal symptoms are prevalent in patients with cirrhosis. Cirrhotic patients have a known predilection to delayed gastric emptying compared to those without cirrhosis. However, the contributing factors have not been fully elucidated. Retained gastric food on esophagogastroduodenoscopy (EGD) has been used as a surrogate marker for delayed gastric emptying with reasonably high specificity. Therefore, we hypothesize that the frequency of retained gastric food contents at EGD will be higher in a cirrhotic population compared to a control population without liver disease. Additionally, we hypothesize that increased frequency of gastric food contents will be associated with increased severity of cirrhosis. AIM/OBJECTIVE:To determine the relative frequency of delayed gastric emptying among cirrhotics as compared to non-cirrhotics and to identify associated factors. METHODS:We performed a retrospective case-control study of cirrhotic subjects who underwent EGD at an academic medical center between 2000 and 2015. Three hundred sixty-four patients with confirmed cirrhosis, who underwent a total of 1044 EGDs for the indication of esophageal variceal screening or surveillance, were identified. During the same period, 519 control patients without liver disease, who underwent a total of 881 EGDs for the indication of anemia, were identified. The presence of retained food on EGD was used as a surrogate for delayed gastric emptying. The relative frequency of delayed gastric emptying among cirrhotics was compared to non-cirrhotics. Characteristics of patients with and without retained food on EGD were compared using univariable and multivariable logistic regression analysis to identify associated factors. RESULTS:0.01) were also associated with a higher likelihood of food retention on EGD. CONCLUSION/CONCLUSIONS:Cirrhotics have a higher frequency of retained food at EGD than non-cirrhotics. Decompensated cirrhosis, defined by Child-Pugh class C, is associated with a higher likelihood of delayed gastric emptying.

IDH1/2 mutations are early drivers present in diverse human cancer types arising in various tissue sites. IDH1/2 mutation is known to induce a global hypermethylator phenotype. However, the effects on DNA methylation across IDH mutant cancers and functionally different genome regions, remain unknown. We analyzed DNA methylation data from IDH1/2 mutant acute myeloid leukemia, oligodendroglioma, astrocytoma, solid papillary breast carcinoma with reverse polarity, sinonasal undifferentiated carcinoma and cholangiocarcinoma, which clustered by their embryonal origin. Hypermethylated common probes affect predominantly gene bodies while promoters in IDH1/2 mutant cancers remain unmethylated. Enhancers showed global hypermethylation, however commonly hypomethylated enhancers were associated with tissue differentiation and cell fate determination. We demonstrate that some chromosomes, chromosomal arms and chromosomal regions are more affected by IDH1/2 mutations while others remain resistant to IDH1/2 mutation induced methylation changes. Therefore IDH1/2 mutations have different methylation effect on different parts of the genome, which may be regulated by different mechanisms.

Antimicrobial-resistant (AMR) infections pose a major threat to global public health. Similar to other AMR pathogens, both historical and ongoing drug-resistant tuberculosis (TB) epidemics are characterized by transmission of a limited number of predominant Mycobacterium tuberculosis (Mtb) strains. Understanding how these predominant strains achieve sustained transmission, particularly during the critical period before they are detected via clinical or public health surveillance, can inform strategies for prevention and containment. In this study, we employ whole-genome sequence (WGS) data from TB clinical isolates collected in KwaZulu-Natal, South Africa to examine the pre-detection history of a successful strain of extensively drug-resistant (XDR) TB known as LAM4/KZN, first identified in a widely reported cluster of cases in 2005. We identify marked expansion of this strain concurrent with the onset of the generalized HIV epidemic 12 y prior to 2005, localize its geographic origin to a location in northeastern KwaZulu-Natal ∼400 km away from the site of the 2005 outbreak, and use protein structural modeling to propose a mechanism for how strain-specific rpoB mutations offset fitness costs associated with rifampin resistance in LAM4/KZN. Our findings highlight the importance of HIV coinfection, high preexisting rates of drug-resistant TB, human migration, and pathoadaptive evolution in the emergence and dispersal of this critical public health threat. We propose that integrating whole-genome sequencing into routine public health surveillance can enable the early detection and local containment of AMR pathogens before they achieve widespread dispersal.

BACKGROUND:While Medicare is a federal health insurance program, managed Medicare limits access to healthcare services to networks within states or territories. However, if a natural disaster requires evacuation, displaced patients are at risk of losing coverage for their benefits. Previous literature has discussed the quality of managed Medicare plans within Puerto Rico but has not addressed the adequacy of this coverage if residents are displaced to the continental United States. We explore Hurricane Maria's impact on a resident of Puerto Rico with chronic health problems, and the challenges he faces seeking healthcare in New York. CASE PRESENTATION/METHODS:A 59-year-old male with a history of diabetes mellitus type II, coronary artery disease, peripheral vascular disease status post right foot amputation, and end-stage kidney disease on hemodialysis was admitted in October of 2017 for chest pain and swelling of legs for 5 days. The patient had missed his last three dialysis sessions after Hurricane Maria forced him to leave Puerto Rico. In examining this patient's treatment, we observe the effect of Hurricane Maria on the medical management of Puerto Rican residents and identify challenges managed Medicare may pose to patients who cross state or territory lines. CONCLUSIONS:We employ this patient's narrative to frame a larger discussion of Puerto Rican managed Medicare and provide additional recommendations for healthcare providers. Moreover, we consider this case in the context of disaster-related continuity of care for patients with complex medical conditions or treatment regimens. To address the gaps in the care of these patients, this article proposes (1) developing system-based approaches for screening displaced patients, (2) increasing the awareness of Special Enrollment Periods related to Medicare among healthcare providers, and (3) creating policy solutions to assure access to care for patients with complex medical conditions.

INTRODUCTION/BACKGROUND:The purpose of this study is to examine awareness, attitudes, and related knowledge of e-cigarettes, and JUUL specifically, among parents of middle and high school students. METHODS:Data were collected in October-November 2018 from a nationally representative sample of U.S. parents of middle and high school students aged 11-18 years (n=2,885) to examine e-cigarette and JUUL awareness, concern about e-cigarette use, and school communication regarding e-cigarettes. Weighted frequencies and percentages are reported; Rao-Scott chi-square tests examined differences by school level. Data were analyzed in 2019. RESULTS:Although most parents (96.2%) had seen or heard of e-cigarettes, only 55.9% had seen or heard of JUUL, and only 44.2% accurately identified an image of JUUL as a vaping device. Many parents reported concern about adolescent e-cigarette use (60.6%), but fewer reported concern about their own child's use (32.9%). Most parents (73.5%) reported receiving no communication from their child's school about e-cigarettes or JUUL. CONCLUSIONS:There are notable gaps in parents' awareness of JUUL. School-to-parent communication efforts are necessary to build parents' knowledge of e-cigarettes like JUUL to prevent the growing youth uptake of these novel and addictive products.