Medical Specialties Commons^™

Limosilactobacillus Reuteri Promotes Melatonin Release From Human Intestinal Organoids Via 5′Ectonucleotidase Activity, Heather A Danhof, Ludwig Ermann Lundberg, Stefan Roos, Robert A Britton

Faculty, Staff and Students Publications

Strains of Limosilactobacillus reuteri have been used to prevent or treat various conditions; however, the mechanisms by which they exert beneficial effects are not completely understood. Infant colic is one example in which L. reuteri DSM 17938 reduces clinical symptoms. While the etiology of colic is unknown, abnormal melatonin levels in infants have been suggested as a possible contributor. L. reuteri DSM 17938 has been shown to produce adenosine from AMP via production of the extracellular enzyme 5′ectonucleotidase (5′NT). Adenosine is a potent signaling molecule that impacts several important aspects of host physiology, including the release of melatonin from the …

Mucin-Derived Sugars Act As Metabolic Brakes Controlling Growth Initiation In Akkermansia Muciniphila, Bryan D Lakey, Katherine J Wozniak, Robert A Britton, Jeffrey J Tabor

Faculty, Staff and Students Publications

Akkermansia muciniphila is a key member of the gut microbiota and plays important roles in host metabolism and health. In the colon, A. muciniphila extracts nutrients from oligosaccharide-rich mucin glycans that comprise the mucosa. However, this environment is complex and shaped by dietary inputs, microbiome metabolism, and mucin glycan composition varying across hosts, gastrointestinal regions, and physiological states. How strains of A. muciniphila integrate these nutrient signals into growth initiation and niche colonization remains unclear. Here, we compare physiological responses of a human- and mouse-derived strain of A. muciniphila, finding that dietary sugars differentially affect these isolates, suggesting host-associated …

Gut-Derived Bacterial Extracellular Vesicles: The Microbial Dark Matter Contributing To Host Inflammation And Cardiometabolic Disease, Blayne Oliver, Michael Sun, Young Seo Lee, Ssanggoo Cho, Tianyi Zhu, David Durgan, Gary Sweeney

Faculty, Staff and Students Publications

Cardiometabolic diseases (CMDs) represent a growing global health burden, with chronic inflammation and gut microbiota dysbiosis emerging as central contributors to their pathogenesis. Among the diverse microbial products influencing host physiology, bacterial extracellular vesicles (BEVs) have gained attention as potent mediators of interkingdom communication. These nanoscale vesicles, secreted by both gram-positive and gram-negative bacteria, carry a complex cargo of proteins, lipids, nucleic acids, and pathogen-associated molecular patterns (PAMPs) that interact with host pattern recognition receptors (PRRs) to modulate immune and metabolic responses. BEVs can traverse intestinal barriers, disseminate systemically, and accumulate in cardiometabolic tissues, where they influence inflammation, insulin sensitivity, …

When Probiotics Guidelines Differ: A Practical Guide For Clinicians And Researchers, Howard Bauchner, Daniel J Merenstein

Faculty, Staff and Students Publications

Many professional organizations publish clinical practice guidelines for the use of probiotics in gastrointestinal disorders. Generally, no two guidelines align perfectly, and some differ markedly. These discrepancies occur because clinical practice guidelines are not purely mechanical outputs of data synthesis. They are shaped by structured interpretation, value judgments, and predefined thresholds for uncertainty. These elements become particularly visible when effect sizes are small, heterogeneity is high, and outcomes vary in clinical relevance-as is the case with probiotic research. This article examines why discordance among probiotic guidelines is predictable and provides practical guidance for clinicians who must decide among conflicting recommendations …

Steroid Receptor Coactivator 3-Deficient Regulatory T Cells Eradicate Multiple Solid Tumors In Syngeneic Mouse Models, Yuri Park, Adam M Dean, Yan Xia, Jianming Xu, Clifford C Dacso, David M Lonard, Sang Jun Han

Faculty, Staff and Students Publications

Steroid receptor coactivator 3 (SRC-3) is highly expressed in regulatory T cells (Tregs) and is important for their immunosuppressive activity. Recently, we demonstrated that disrupting SRC-3 expression in Tregs eliminates triple-negative breast cancer (TNBC) and prostate cancer in syngeneic animal models by generating an anti-tumor immune microenvironment without inducing immune-related adverse events (irAEs). Further analysis of these mice revealed that SRC-3 knockout (KO) Tregs infiltrated breast tumors and facilitated the infiltration of CD8

Is Your Cyst Really A Ganglion Cyst? A Case Report Of Angioleiomyoma Mimicking A Plantar Fascia Cystic Lesion, Christopher Anjorin Ms Dpmc, Joseph Bender Dpm

School of Podiatric Medicine - Student Research

Ganglion cysts are among the most common benign soft tissue masses encountered in podiatric clinical practice, and their diagnosis is often presumed based on location, clinical observation, and transillumination. However, this case highlights a diagnostic idiosyncrasy: a lesion clinically presumed to be a ganglion cyst within the plantar fascia was ultimately identified as an angioleiomyoma following surgical excision and histopathological evaluation. This finding underscores the importance of maintaining a broad differential diagnosis when assessing cystic lesions, particularly those that transilluminate, as benign vascular tumors may closely mimic more common entities in both clinical presentation and imaging. More importantly, what if …

Deep Brain Stimulation In Early-Stage Alzheimer's Disease: A Systematic Review Of Neuropsychological Outcomes, Nora Huey

Doctoral Dissertations

Alzheimer’s disease (AD) is a progressive neurodegenerative disorder characterized by cognitive decline, memory impairment, and disruption of neural networks involved in cognitive functioning. Although existing treatments may provide symptomatic benefit, there remains a need for interventions capable of slowing or stabilizing disease progression. Deep brain stimulation (DBS) has emerged as a potential neuromodulatory intervention for early-stage AD through stimulation of memory- and cognition-related neural circuitry. This dissertation employed a systematic review research methodology to examine teh neuropsychological and neurobiological outcomes associated with DBS targeting the fornix (DBS-f) and nucleus basalis of Meynert (DBS-NBM) in individuals with early-stage AD over 12–24 …

Phytochemical And In-Vitro Cytotoxic Analyses Of Flavonoid Species Isolated From Chromolaena Leivensis, Luke A. Bryant

Electronic Theses and Dissertations

As a leading cause of death worldwide, cancer and its treatments remain a primary source of interest among researchers. Modern studies are looking into bioselective cytotoxicity to create new chemotherapies that do not have the same harsh side effects as those we use today. Natural product research has a promising future for the development of such treatments. Specifically, polar flavonoids may be the key to a bioselective treatment. Such flavonoid species are native to plants, often within flower petals or within the body. A natural antioxidant, they are designed not to harm healthy cells. This study focuses on the plant …

In-Hospital Mortality Patterns And Readmissions In Patients With Chronic Obstructive Pulmonary Disease: An Analysis Of The Role Of Pulmonary Hypertension, Saad Afzal Khan, Trishna Parikh, Adishwar Rao, Akriti Agrawal, Aarohi Parikh, Sarah Shin, Maulin Patel, Kha Dinh, Bela Patel, Bindu Akkanti

Faculty, Staff and Student Publications

Chronic obstructive pulmonary disease (COPD) may be complicated by pulmonary hypertension (PH). We aimed to understand the impact of PH on in-hospital mortality and quantify the 30-day readmission rate among patients with COPD. For this cross-sectional study, we used the Nationwide Readmissions Database from 2017-2020 to identify adults ≥18 years with COPD. Patients were stratified according to PH diagnosis. Baseline characteristics between groups were compared using the Pearson chi-square test and two-sample t-test. Predictors of in-hospital mortality were determined using multivariate logistic regression analysis adjusted for demographics and confounders. The 30-day readmission rate and prevalence of PH subgroups by baseline …

Mtorc2-Nav1.2 Signaling Drives Early Hyperexcitability In Alzheimer’S Disease Mouse Model

Faculty, Staff and Students Publications

Hyperexcitability is a biomarker of early-stage Alzheimer’s Disease (AD) and hastens cognitive decline later in its course. Mechanistic target of rapamycin (mTOR) signaling contributes to the slope of this trajectory, as evidenced by early increased brain expression and the rescue of hyperexcitability by genetic deletion of mTOR complex 2 (mTORC2); however, a molecular mechanism directly linking mTOR signaling to membrane hyperexcitability in early-stage AD remains elusive. Here, we show that hyperactive mTOR signaling stimulates the voltage-gated Na+ channel 1.2 (Nav1.2), a previously identified downstream phosphorylation target of mTORC2 and a key regulator of membrane electrogenesis. Augmented Nav1.2 channel function induced …

When Defense Turns Destructive: Unraveling The Global Rise Of Autoimmune Disease And Sex-Based Disparities, Avery R. Hammersmith

Caroliniana Undergraduate Research Journal

This article examines the evolution of autoimmunity from its early rejection under the theory of "horror autotoxicus" to its current status as a pressing global epidemic. While early 20th-century scientists believed the body possessed inherent safeguards against self-attack, mid-century discoveries of autoantibodies established that the immune system can indeed target healthy tissues, leading to chronic conditions such as systemic lupus erythematosus (SLE) and Hashimoto's thyroiditis. Current data reflect a significant surge in these disorders, with a reported 19.1% increase in incidence and a 12.5% increase in prevalence between 1985 and 2015. Within the United States, the prevalence of antinuclear antibodies, …

A Rare Case Of Hydroxychloroquine-Induced Cardiogenic Shock, Nikhil Erabelli, Pranayvir Lotey, Alice J. Chu, Marwan F. Jumean

Journal of Shock and Hemodynamics

Cardiac complications are common in systemic lupus erythematosus (SLE), but drug-induced cardiomyopathy remains underdiagnosed. Hydroxychloroquine (HCQ) cardiotoxicity is rare, and the few reports of HCQ-associated cardiogenic shock have followed acute overdose rather than chronic therapeutic use. A 36-year-old woman with SLE on long-term HCQ and heart failure with mildly reduced ejection fraction (EF) presented with exertional dyspnea, lower extremity edema, and retrosternal chest pain. Echocardiography showed a new EF of 20% to 25%, and computed tomography demonstrated pulmonary edema. The patient’s lactate levels rose despite intravenous furosemide, consistent with Society for Cardiovascular Angiography and Interventions stage C cardiogenic shock. Right …

A Single Institution Study Of Tert Promoter Mutations Detected Upon Preoperative And Postoperative Testing Of Thyroid Nodules: Characterization And Clinicopathologic Significance Of Tert Mutations Occurring In Isolation And In Conjunction With Other Mutations Or Gene Fusions, Reem Khraishi, Pradip Manna, Ujwala Gosavi, Phillip Palmer, Andrew Neeson, Violet Quann, Elizabeth Cottrill, Stacey Gargano

Jefferson Hospital Staff Papers and Presentations

Introduction

• Telomerase reverse transcriptase (TERT) promoter mutations occur in follicular cell-derived thyroid neoplasms, often coexisting with other mutations and associated with aggressive clinicopathologic features.
• The significance of TERT mutations occurring in isolation (iTERT) is unclear.
• We examined TERT-positive thyroid specimens (preoperative FNA and postoperative FFPE) to evaluate the clinicopathologic significance of this mutation occurring in isolation vs. in conjunction with other genetic alterations.

A Massively Parallel Reporter Assay Of Mecp2 Cis-Regulatory Elements Reveals Genetic Candidates For Male-Biased Autism, Rebecca Meyer-Schuman, Fisher Cherry, Yang Sui, Athanasios Papastathopoulos-Katsaros, Yi Zhong, Yidan Li, Tianyun Wang, Kelsey Hennick, Druha Karunakaran, Hanna Berk-Rauch, Zhandong Liu, Aravinda Chakravarti, Tomasz Nowakowski, Evan E Eichler, Huda Zoghbi

Faculty, Staff and Students Publications

Autism affects male individuals four times more often than female individuals, yet the basis of this sex bias remains unclear. One hypothesis is that this sex bias is due to genetic variants in X chromosome genes where haploinsufficiency causes neurodevelopmental disorders (NDDs). In heterozygous XX female probands, a complete loss-of-function variant in one of these genes often causes syndromic NDD, but the same variant is too deleterious for survival in hemizygous XY males. A mild hypomorphic variant, however, may be tolerated in a female carrier but may produce milder neurological phenotypes in a male proband. We tested this by investigating …

Forniceal Deep Brain Stimulation Improves Memory In Rett Syndrome Mice By Promoting The Maturation Of Newborn Hippocampal Neurons, Qi Wang, Bin Tang, Zhenyu Wu, Huda Y Zoghbi, Jianrong Tang

Faculty, Staff and Students Publications

Deep brain stimulation (DBS) is associated with an increase in hippocampal neurogenesis and memory benefits, but the causal mechanism is unclear. Here, we use a mouse model of Rett syndrome, a severe learning disability syndrome caused by MECP2 loss of function, to find that DBS promotes the maturation and integration of newborn dentate granule cells (DGCs) into the neural circuit. Suppressing hippocampal neurogenesis prevented DBS from improving learning and memory. Newborn methyl-CpG-binding protein 2 (MeCP2)-deficient DGCs in Rett syndrome mice showed attenuated development and synaptic dysfunction, but DBS rescued DGC dendritic arborization, synaptogenesis, and long-term synaptic plasticity. DBS achieves this, …

Multiple Quality Control Checkpoints Safeguard Small Nuclear Rna Biogenesis And Prevent Assembly Of Aberrant Spliceosomes, Tiantai Ma, Claire Huntington, Zhuoyi Song, Rea M Lardelli, Eric L Van Nostrand, Jens Lykke-Andersen

Faculty, Staff and Students Publications

Defective small nuclear (sn)RNAs are produced from hundreds of human snRNA pseudogenes and mutant snRNA genes associated with human developmental disorders. Machineries that prevent defective snRNAs from disrupting pre-mRNA splicing remain poorly defined. Here, we identify multiple checkpoints in snRNA biogenesis monitored by quality control machineries that subject defective snRNAs to degradation and prevent their assembly into spliceosomes. We show that variant U1 snRNAs produced from human pseudogenes, some at rates approaching canonical snRNAs, are impaired in 3' cleavage and targeted for degradation by the NEXT-exosome while failures in subsequent protein assembly steps promote NEXT-exosome- or terminal uridylyl transferase 4/7-mediated …

Hyaluronic Acid Rectal Wall Infiltration And Reversal In Patients With Prostate Cancer Undergoing Radiation Therapy-A Case Series, Michael K Rooney, Stephen R Lee, Stephen E Mcrae, Ketan Y Shah, Mohamed E Abdelsalam, Ethan Y Lin, Comron Hassanzadeh, Seungtaek Choi, Quynh-Nhu Nguyen, Steven J Frank, Mohamed Shelan, Lauren L Mayo, Sean Mcguire, Steven Yevich, Osama Mohamad

Faculty, Staff and Students Publications

No abstract provided.

Relationship Extraction For Adverse Drug Events In Clinical Notes Using Large Language Models: A Retrospective Cross-Sectional Study, Joseph M Plasek, Yiming Li, Mary G Amato, Dinah Foer, Diane L Seger, Shayma Alzaidi, Huiyuan Zhou, Gretchen Purcell Jackson, David W Bates, Li Zhou

Faculty, Staff and Students Publications

Background: Adverse drug events (ADEs) are a critical indicator of patient safety but are often documented only in free-text clinical notes. The potential of recent advances in natural language processing (NLP), particularly generative large language models (LLMs), to identify ADEs remains understudied. This study aimed to compare the performance of multiple LLMs in identifying ADE-Drug relationships in inpatient and ambulatory clinical notes.

Methods: We used clinical notes from the 2018 National NLP Clinical Challenge (n2c2) ADE dataset (inpatient; n = 505) and from outpatient encounters (n = 2555) between October 1, 2018, and December 31, 2019, at a large academic …

Glial Dysfunction And Memory Impairments In A Model Of Pediatric Obstructive Sleep Apnea, Thea Zlatkov, Akdes Serin Harmanci, Christopher J Yates, Kenneth Nobleza, Roshan Ailani, Adam C Adler, Farrah Kheradmand, Hyun Kyoung Lee, Benjamin Deneen, Hyun-Hwan Jeong, Arvind Chandrakantan

Faculty, Staff and Students Publications

Pediatric obstructive sleep apnea (POSA) is a common childhood disease that often causes aberrant brain development and cognitive deficits. The pathophysiological underpinnings of cognitive impairments in POSA remain unclear. Here, we examined cellular and molecular aspects of pathology in a mouse model of POSA that features learning and memory deficits. We performed single-nucleus RNA-sequencing (snRNA-seq) of the hippocampus to examine gene expression changes in an unbiased and cell type-specific manner. This dataset revealed a striking perturbation of transcriptomes across all brain cell types, particularly within glia and neural stem cells. We validated reduced expression of several differentially expressed genes at …

Natural History Of Pi-Rads 3 Lesions On Serial Prostate Mpmri, Ron Marom, Yuval Rand, Meitar Atias, Sophie Barnes, Ibrahim Fahoum, Gal Keren-Paz, Mario Sofer, Ofer Yossepowitch, Snir Dekalo, Avi Beri, Roy Mano

Faculty, Staff and Students Publications

Objective: PI-RADS 3 lesions on prostate multiparametric MRI (mpMRI) are indeterminate findings with debated management. We evaluated their radiologic evolution on follow-up mpMRI and correlated imaging changes with biopsy outcomes.

Methods: We retrospectively identified 166 men with at least one PI-RADS 3 lesion on initial mpMRI and at least one follow-up mpMRI without intervening treatment. Lesions were classified at follow-up as regressed (downgraded to PI-RADS ≤ 2), stable (remained PI-RADS 3), or progressed (upgraded to PI-RADS 4-5). Lesions were stratified by zonal location. MRI-targeted biopsy results were reviewed when available (n = 64).

Results: On follow-up, 52% of lesions regressed, …

Comparative Performance Of Predictive Nomograms For Pathological Upstaging In Clinical T1 Renal Masses: An Independent External Validation, Michael Vainrib, Amos Neheman, Omri Schwarztuch Gildor

Faculty, Staff and Students Publications

Background: Preoperative identification of pathological upstaging (≥ pT3a) in clinical T1 (cT1) renal masses is critical for surgical planning. We externally validated three established predictive models, Barra, Nocera, and Mei, to assess their discrimination, calibration, and clinical utility in a contemporary cohort.

Patients and methods: We retrospectively reviewed patients undergoing surgery for cT1 renal masses at our institution. The primary endpoint was pathological upstaging to pT3a. Model performance was evaluated using the Area Under the Curve (AUC) for discrimination and the Brier Score for overall accuracy. Calibration was assessed using parametric and nonparametric Loess-smoothed curves. Clinical utility was quantified using …

Time Is Brain: A Nurse-Informed Multicenter Analysis Of Hospital-Based Mechanical Thrombectomy Pathway Efficiency (Haste), Gina M. Remington, Gita Nadimpalli, Michael Rolli, Nicki Roderman, Rebecca Cain, Sarah Pieprzyca, Debra Philpot, Elizabeth Wiggins, Edward C. Jauch, Shanna Arnold-Egloff

HCA Healthcare Journal of Medicine

Background

Swift response and successful reperfusion are major determinants of outcome in acute ischemic stroke due to large vessel occlusion. Quality initiatives in stroke care have shown that organized, protocol-driven practice can shorten treatment times and improve safety-sensitive clinical outcomes, yet thrombectomy workflow variation persists across health systems, and few studies have translated workflow findings into operational recommendations.

Methods

This retrospective, multicenter study evaluated mechanical thrombectomy workflow performance across 16 facilities in a large United States health system from August 2020 through December 2021. Elastic net regularization was applied to patient-level characteristics to generate residual durations for door-to-imaging, door-to-puncture, imaging-to-puncture, …

Microbiome-Modulating Dietary Interventions For The Treatment Of Insulin Resistance In Polyendocrine Metabolic Ovarian Syndrome (Pmos), Ashley Davis

Lynchburg Journal of Medical Science

No abstract provided.

Genome Sequence Of Clostridioides Difficile Prb1128, A Rt023 Strain Containing A Mobile Genetic Element Allowing For Xylitol Utilization, Katherine J Wozniak, Jeroen Corver, Ed J Kuijper, Wiep Klaas Smits, Robert A Britton

Faculty, Staff and Students Publications

Clade 3 strains of Clostridioides difficile, dominated by PCR ribotype 023 (RT023) strains, remain the least well studied in the phylogeny. We sequenced a strain of RT023 C. difficile (PRB1128) to gain molecular genetic insights and add to the limited repository of RT023 genomes in existence.

Progressive Remodeling Of Global Protein Interaction Networks In A Mouse Model Of Tauopathy, Noah Lampl, Morgan C Stephens, Zihan Wang, Joseph T Nigro, Alejandro Rondon Ortiz, Ryan Hekman, Anna Lourdes F Cruz, Rebecca Roberts, Lulu Jiang, Juan Botas, Andrew Emili, Benjamin Wolozin

Faculty, Staff and Students Publications

Neurodegenerative disease is marked not just by loss of proteins or cells, but by dynamic rewiring of macromolecular interaction networks that precede and drive pathology. Here, we present a temporally resolved, systems-scale map of multi-protein complex remodeling in a tauopathy model, integrating co-fractionation mass spectrometry, quantitative phosphoproteomics, and machine learning to decode phosphorylation-dependent shifts in protein interactomes across disease progression. This interactomic atlas serves as a resource to investigate functional assemblies, including MAPT-Dpysl2 and Cyfip1-actin, as well as ptk2b-Kars/Dars and ptk2b-Msn-Farsb-complexes, that modulate early disease phenotypes in vivo. Notably, it captures the composition, dynamics, and regulatory state of protein complexes …

Progressive Remodeling Of Global Protein Interaction Networks In A Mouse Model Of Tauopathy, Noah Lampl, Morgan C Stephens, Zihan Wang, Joseph T Nigro, Alejandro Rondon Ortiz, Ryan Hekman, Anna Lourdes F Cruz, Rebecca Roberts, Lulu Jiang, Juan Botas, Andrew Emili, Benjamin Wolozin

Faculty, Staff and Students Publications

Neurodegenerative disease is marked not just by loss of proteins or cells, but by dynamic rewiring of macromolecular interaction networks that precede and drive pathology. Here, we present a temporally resolved, systems-scale map of multi-protein complex remodeling in a tauopathy model, integrating co-fractionation mass spectrometry, quantitative phosphoproteomics, and machine learning to decode phosphorylation-dependent shifts in protein interactomes across disease progression. This interactomic atlas serves as a resource to investigate functional assemblies, including MAPT-Dpysl2 and Cyfip1-actin, as well as ptk2b-Kars/Dars and ptk2b-Msn-Farsb-complexes, that modulate early disease phenotypes in vivo. Notably, it captures the composition, dynamics, and regulatory state of protein complexes …

Fgfr1/Klb-Mfg-E8 Maintains Microvascular Integrity And Adaptive Cardiac Remodeling, Sanskruti R Gare, Nasser H Alatawi, Xinyi Chen, Jiayan Zhang, Claire Ross, Oveena Fonseka, Yihua Han, Namrita Kaur, Andrea Ruiz-Velasco, Xiangjun Zhao, Yingjuan Liu, Riham R E Abouleisa, Susanne S Hille, Tao Wang, Sabu Abraham, Bernard D Keavney, Martin K Rutter, Elizabeth J Cartwright, Gareth Howell, Tamer M A Mohamed, Oliver J Müller, Wei Liu

Faculty, Staff and Students Publications

Background: Endothelial defects in the heart are a contributor to cardiac pathological remodeling and dysfunction, which can be influenced by cardiomyocytes. Here, we explore cardioprotective crosstalk between cardiomyocytes and endothelial cells under diabetic conditions.

Methods: Type 2 diabetes was induced in male and female mice using a high-fat, high-sucrose diet in conjunction with low-dose streptozotocin. Cardiomyocyte-specific deletion of FGFR1 (fibroblast growth factor receptor 1) or KLB (beta-Klotho) was achieved by crossing floxed mice with αMHC (alpha-myosin heavy chain)-Cre transgenic mice, while the treatment potential was assessed by recombinant adeno-associated virus 9 delivery systems or administration of recombinant protein. Various in …

Murine Typhus In Georgia: Historical Context And A Probable Case Of Resurgence Where Previously-Thought Eradicated, Giovanni Mella-Velazquez, Christopher He, Bolanle Akinsola, Judson Miller

Journal of the Georgia Public Health Association

Background: Murine typhus, caused by Rickettsia typhi, is a flea-borne illness historically endemic to the southeastern United States, with initial cases reported in Atlanta, Georgia in 1913. Following vector control efforts, incidence declined significantly, and the disease was removed from the nationally notifiable disease list in 1987. While recent cases have been reported in select regions, murine typhus has not been documented in Georgia for decades. We present a pediatric case in Atlanta that may represent the first reported instance in nearly 40 years, suggesting possible reemergence in the Southeast.

Methods: We conducted a case report analysis of a pediatric …

The Lateral Recovery Position In Medical Vs Dental Emergencies, John Regis, Steven Saxe, Jason Ciccotelli, Saskia Richter, Jessica Immonen

The Journal of Integrative Physiology

The lateral recovery position is widely used in prehospital and clinical settings to help maintain airway patency in unconscious patients who are breathing spontaneously. Tracheal anatomy and asymmetries in respiratory structures, along with gravitational effects on soft tissues, may influence the efficacy and safety of this positioning. Clinical nuances related to the setting and secondary health concerns interestingly create disagreement on preferred side for lateral placement. This article explores the anatomical and physiological considerations that support the lateral recovery position—focusing on tracheal asymmetry and its implications for airway patency—along with emergency medical practices in medical versus dental emergencies. It also …

Frequency-Dependent Cerebellar Circuits Independently Gate Social Vocalizations And Movement, Tao Lin, Benjamin R Arenkiel, Roy V Sillitoe

Faculty, Staff and Students Publications

Communication depends on precise coordination between motor execution and cognition. Here we reveal that the cerebellum exerts real-time control over social vocalizations in adult mice. Optogenetic activation of excitatory cerebellar output in the superior cerebellar peduncle suppressed ultrasonic vocalizations with frequency-dependent potency while inducing distinct motor phenotypes. Systematic functional mapping across cerebellar regions and cell types revealed that vocal suppression can occur in the absence of overt motor impairment, suggesting selective control of vocal output beyond gross movement disruption. We identified the periaqueductal gray (PAG), a conserved midbrain vocal control center, as a key downstream mediator of this effect. Deep …