Release of Lipids Stored in the Intestine by Glucagon-Like Peptide-2 Involves a Gut-Brain Neural Pathway.

BACKGROUND: The gut hormone GLP-2 (glucagon-like peptide-2) plays important roles in lipid handling in the intestine. During postabsorptive stage, it releases preformed chylomicrons stored in the intestine, the underlying mechanisms of which are not well understood. Previous studies implicate the involvement of neural pathways in GLP-2's actions on lipid absorption in the intestine, but the role of such mechanisms in releasing postabsorptive lipid storage has not been established. METHODS: Here, in mesenteric lymph duct cannulated rats, we directly tested whether gut-brain neural communication mediates GLP-2's effects on postabsorptive lipid mobilization in the intestine. We performed total subdiaphragmatic vagotomy to disrupt the gut-brain neural communication and analyzed lipid output 5 hours after a lipid load in response to intraperitoneal GLP-2 or saline. RESULTS: Peripheral GLP-2 administration led to increased lymph lipid output and activation of proopiomelanocortin neurons in the arcuate nucleus of hypothalamus. Disruption of gut-brain neural communication via vagotomy blunted GLP-2's effects on promoting lipid release in the intestine. CONCLUSIONS: These results, for the first time, demonstrate a novel mechanism in which postabsorptive mobilization of intestinal lipid storage by GLP-2 enlists a gut-brain neural pathway.

Otolaryngologic conditions in children with neonatal abstinence syndrome: A descriptive study.

PURPOSE: Literature on otolaryngologic sequelae of children with neonatal abstinence syndrome (NAS) has been scarce to date. Prior reports suggest some otologic conditions associated with long-term NAS outcomes, but no comprehensive exploration of these relationships currently exists. This study aims to characterize the breadth of otolaryngologic conditions diagnosed in children with NAS. METHODS: This is a retrospective descriptive study conducted at a tertiary care hospital. We identified 524 children with NAS born between 1/1/2014 and 12/31/2019 who were evaluated by the otolaryngology department. Diagnoses were categorized as otologic, oropharyngeal, sinonasal, and laryngeal. Additional diagnoses of obstructive sleep apnea (OSA) and congenital abnormalities of head and neck were noted separately. Descriptive statistics were calculated, and ANCOVA testing analyzed for differences in mean number of diagnoses. RESULTS: 680 total otolaryngologic diagnoses were analyzed across 524 patients. Otologic conditions comprised 39.7 % of total diagnoses, oropharyngeal conditions 26.8 %, sinonasal conditions 18.4 %, laryngeal conditions 5.3 %, OSA 1.5 %, and congenital abnormalities 8.3 %. After adjusting for covariates, there were a significantly higher number of otologic diagnoses compared to the other subcategories with mean (standard deviation) of 0.46 (0.83), followed by oropharyngeal 0.35 (0.55), sinonasal 0.24 (0.49), and laryngeal 0.07 (0.29). Thirty total otolaryngology-related procedures were performed in our sample, with myringotomy with tube insertion as the most common. CONCLUSION: Understanding the otolaryngologic sequelae of children with NAS is important as these conditions impact children's early development. Our study also highlights various socioeconomic factors that may impact pediatric ENT care and the follow-up of patients born with NAS.

Examining the Impact of Restrictive Federal Immigration Policies on Healthcare Access: Perspectives from Immigrant Patients across an Urban Safety-Net Hospital.

The Trump Administration instituted a series of restrictive policies including the expansion of the public charge ruling, which created barriers to healthcare access for immigrant communities. This study examined immigrants' knowledge, attitudes, and health-seeking practices as a result of the public charge proposal. Thirty semi-structured interviews were conducted in English or Spanish with foreign-born adults at an urban safety-net hospital in Boston from May 2019 to August 2019. Thematic content analysis identified barriers and facilitators of healthcare access and usage. Approximately half of participants were aware of the public charge proposal. Six participants expressed concern about its implications, but only two discontinued benefits. Barriers to care included fear of deportation, interaction with law enforcement, and competing socioeconomic needs. Facilitators of care included supportive communities, immigrant-friendly environment, and personal beliefs. Hospitals can develop community-centered services for immigrant patients that offset the barriers to healthcare access resulting from adverse federal immigration policies.

Assessing the Educational Quality of Facebook Videos as an Informative Resource on Otitis Media.

OBJECTIVE: This study analyzes the quality and reliability of otitis media (OM) videos on Facebook and investigates whether the videos shared within the Facebook community are considered to be a valuable educational tool. The results of this study are important for providing clinicians with the necessary understanding about the video content that their patients may be exposed to. STUDY DESIGN: Cross-sectional analysis of video content. SETTING: A new Facebook account was created to carry out a search for videos on OM. METHODS: Inclusion criteria were as follows: videos intended for educating patients or guardians on OM, videos in the English language, and videos with at least 1 share. RESULTS: A total of 364 videos were screened, and 62 fit our inclusion criteria for analysis. The majority (56%) of OM videos on Facebook focused on complementary and alternative medication without mentioning any current guidelines. A limited amount of videos (29%) made any mention to surgical treatment options for OM. There was a strong positive correlation (rho = 0.8419, P < .001) between a video's content and its reliability. There was no correlation seen between a video's content and its shares (rho = -0.142, P = .1359). CONCLUSIONS: The majority of OM videos on Facebook are inadequate for educational value. Clinicians should know about the existence of videos on OM and the quality of information that parents are exposed to.

Quality of Patient Education Sections on Otitis Media Across Different Website Platforms.

OBJECTIVE: To determine the quality, content, and readability of patient education materials pertaining to otitis media across several popular online platforms focused on otolaryngology and pediatric primary care education. METHODS: Online patient materials related to otitis media and directed toward parents were collected from the American Association for Family Practice (AAFP), ENT-Health section of the American Academy of Otolaryngology-Head and Neck Surgery, Healthychildren.org from the American Academy of Pediatrics, KidsHealth from Nemours, WebMD, and Wikipedia. Materials were analyzed for quality, content, and readability. The DISCERN instrument was used to score quality. A unique content score was generated based on the information provided on each website and on the medical and surgical management of otitis media. Readability scores were calculated using the Flesch-Kincaid Grade Level, Flesch Reading Ease Score, Gunning-Fog Index, Simple Measure of Gobbledygook, Coleman-Liau Index, and Automated Readability Index. RESULTS: Overall, content was well-balanced. Information from AAFP and Healthychildren.org was focused more on medical management than other sources. The average DISCERN scores showed all sources to be of good quality with minimal shortcomings. The AAFP and KidsHealth websites had some readability scores around the 8th-grade reading level, the National Institute of Health's upper limit recommended for public health information; however, most websites were above this recommended reading level. CONCLUSION: Patient education materials related to otitis media on academic and certain popular internet sites are good sources to obtain high-quality information on the topic. Patient educational background, prior knowledge and understanding of otitis media, and physician-patient partnership goals should be taken into account when referring patients to online materials.

Loops in canonical RNA pseudoknot structures.

In this article, we compute the limit distributions of the numbers of hairpin-loops, interior-loops and bulges in k-noncrossing RNA structures. The latter are coarse-grained RNA structures allowing for cross-serial interactions, subject to the constraint that there are at most k - 1 mutually crossing arcs in the diagram representation of the molecule. We prove central limit theorems by means of studying the corresponding bivariate generating functions. These generating functions are obtained by symbolic inflation of [Formula: see text]-shapes introduced by Reidys and Wang (2009).

Shapes of RNA pseudoknot structures.

In this article, we study abstract shapes of k-noncrossing, σ-canonical RNA pseudoknot structures. We consider lv1k- and lv5k-shapes, which represent a generalization of the abstract π'- and π-shapes of RNA secondary structures introduced by Giegerich et al. Using a novel approach, we compute the generating functions of lv1k- and lv5k-shapes as well as the generating functions of all lv1k- and lv5k-shapes induced by all k-noncrossing, σ-canonical RNA structures for fixed n. By means of singularity analysis of the generating functions, we derive explicit asymptotic expressions For online Supplementary Material, see www.liebertonline.com.