Analytical, Diagnostic and Therapeutic Techniques and Equipment Commons^™

Viral Detection In Anterior Nasal Swabs Versus Nasopharyngeal Swabs In Children, Nicole Neeley, Abby Kietzman, Rangaraj Selvarangan, Dithi Banerjee, Jennifer Goldman, Jennifer Schuster

Research Days

Background: Respiratory viruses are a significant cause of pediatric illness and healthcare utilization. Diagnostic testing for respiratory viruses is generally performed using nasopharyngeal (NP) specimens obtained by trained staff, limiting testing to medical settings. Evaluating additional sampling methods in children that are easier to collect and can be performed outside of medical settings, such as anterior nasal swab (NS) specimens may expand access to diagnostic testing and aid public health surveillance.

Methods: Eligible children hospitalized at Children’s Mercy Hospital who had a standard of care NP specimen collected for respiratory viral testing were enrolled. Research NS specimens were obtained through …

Tacrolimus Dosing In Liver Transplant Recipients Using Phenotypic Personalized Medicine: A Phase 2 Randomized Clinical Trial, Jeffrey Khong, Megan Lee, Curtis Warren, Un Kim, Sergio Duarte, Kenneth Andreoni, Sunaina Shrestha, Mark Johnson, Narendra Battula, Danielle Mckimmy, Thiago Beduschi, Ji-Hyun Lee, Derek Li, Chih-Ming Ho, Ali Zarrinpar

Department of Surgery Faculty Papers

Tacrolimus is the most commonly used immunosuppression drug after solid organ transplantation; however, its dosing is challenging due to substantial inter-individual variability, often resulting in blood levels that deviate from the target therapeutic range. We explored whether a dynamically customized, phenotypic-outcome-guided drug dosing method could improve maintenance of drug trough levels within pre-determined target ranges, focusing on tacrolimus immediately after liver transplantation. This single-center, partially blinded, completed clinical trial involved 62 adults undergoing liver transplantation, block randomized into parallel groups: standard-of-care (SOC) clinician-determined or Phenotypic Personalized Medicine (PPM)-guided tacrolimus dosing. The primary outcome was percentage of post-transplant days with large …

Effect Of Endodontic Access Preparation On The Retention Of Zirconia Crowns With Temporary Or Permanent Access Hole Restorations: An In Vitro Study, J. Nick Sanders, Amir H. Nejat, Peter Dupree, Edwin Kee, Madeleine E. Raymond, Fred Mcmullen

School of Dentistry Faculty Publications

Objectives: To evaluate the effect endodontic access preparation had on the retention of anterior zirconia crowns after restoring the access hole with temporary versus permanent restorative materials. Methods: 30 anterior zirconia crowns were milled from 5Y-TZP zirconia and bonded to a 3D printed die with resin cement. Crowns were randomly divided into three groups including negative control (NC, n = 10) with no endodontic access preparation; positive control (PC, N = 10) received endodontic access preparation and was restored with a temporary restorative material (Cavit); composite restoration (CR, N = 10) received an endodontic access preparation and then the access …

Post-Operative Management Of Chronic Subdural Hematomas, Steven R. Glener, Md

Health Equity and Quality Improvement (HEQI) Summit

Primary Objective & Outcome Measures

Objective: Identify standard of care for post-operative subacute to chronic subdural hematomas (cSDH) that undergo burr hole evacuation

Primary outcomes:

• Rate of SDH recurrence requiring re-evacuation or MMA embolization

Secondary outcomes:

• LOS
• Readmission for a medical problem related to chronic subdural evacuation

Improving Recognition And Reporting Of Blood Transfusion Reactions In The Inpatient Setting, Tara Rakiewicz, Douglas Russ, Juliana Guarente, Katy Loos, Mary Harach, Jeffrey Riggio, Elizabeth Teixeira, Adam Binder

Health Equity and Quality Improvement (HEQI) Summit

Background

• Blood product transfusion reactions are associated with a spectrum of signs/ symptoms and can be challenging to identify. Transfusion reactions occur in about 1.1% of transfusions and constitute a significant source of iatrogenic morbidity and mortality.
• There is a nationwide under-reporting of transfusion reactions to blood transfusion Services.
• At TJUH, formally reported reactions comprised 0.24% of all blood product transfusions in 2024, similar to the national reporting average of 0.22%.
• Transfusion associated circulatory overload (TACO), and Transfusion related acute lung injury (TRALI) are two leading causes of mortality of blood transfusion reactions (Figure 1).
• Under-reporting leads to false data …

Single Center Comparison Of Home Sleep Apnea Testing Based On Respiratory Polygraphy Vs. Peripheral Arterial Tonometry, Stephen F. White, Md, Praneet C. Kaki, Bs, Henry C. Ideker, Md, Ritu G. Grewal, Md

Health Equity and Quality Improvement (HEQI) Summit

Introduction

• Home sleep apnea testing (HSAT) is an accessible option for diagnosing obstructive sleep apnea (OSA) in patients with high pre- test probability of moderate to severe OSA
• Cardio-respiratory polygraphy (RP) has traditionally been utilized and involves wearing a nasal airflow cannula, pulse oximeter, and respiratory effort belt with actigraphy
• Peripheral arterial tonometry (PAT)-based testing is a newer technology that involves wearing a disposable smartwatch-sized computer on the wrist, sensor on the finger and sensor on the chest and has been validated for HSAT
• PAT-based HSAT has been increasingly utilized due to perceived ease of use, improved patient comfort, and …

Checklists To Improve Emergency Medicine Resident Confidence In Airway Management, Tiara Paul, Bs, Elizabeth Glowacki, Md, Sean Mcgann, Md

Health Equity and Quality Improvement (HEQI) Summit

Objectives

• Determine the level of confidence regarding airway management among TJUH emergency medicine residents
• Implement education based on identifiable knowledge gaps
• Assess for improvement in resident confidence and discover avenues to optimize the education program

Discrepancy Between Hyaluronic Acid Levels And Mri-Based Measurements Of Hepatic Fat And Fibrosis, Daniel Aaron Borman, Rachel L. Chevalier, Jonathan Body Ingestion Clinical Wagner, Michele T. Pritchard, Sherwin S. Chan, Nathan S. Artz, Johnston K. Fite, Yoon Y. Cho, Valentina Shakhnovich, Veronica Williams, Voytek Slowik

Research Days

Introduction

Metabolic-dysfunction-associated steatotic liver disease (MASLD) is the most common liver disease in children in the United States and, when left untreated, can progress to liver fibrosis. Clinicians currently utilize imaging and biopsy to assess fibrosis in this patient population as there is no validated serum biomarker available for detecting fibrosis. Previous research suggests that serum hyaluronic acid levels are predictive of hepatic fibrosis in children with MASLD.

Methods

Retrospective data were obtained from the Children’s Mercy Hospital Liver Lab study. Pediatric subjects with both hyaluronic acid (HA) samples and MRI evaluation within a month were identified and included for …

Impact Of Diagnosis To Treatment Interval On Outcomes In Patients With Newly Diagnosed Marginal Zone Lymphoma - A Us Multisite Study, Narendranath Epperla, Geoffrey Shouse, Natalie Grover, Pallawi Torka, Kaitlin Annunzio, Marcus Watkins, Andrea Anampa-Guzmán, Beth Christian, Colin Thomas, Md, Stefan Barta, Praveen Geethakumari, Reem Karmali, Nancy Bartlett, Adam Olszewski

Department of Medicine Faculty Papers

Diagnosis-to-treatment interval (DTI) is an important prognostic factor in patients with newly diagnosed aggressive lymphomas, however the impact of DTI on outcomes in marginal zone lymphoma (MZL) is unknown. In this multicenter retrospective cohort study, we included adult patients with MZL who received first-line immunochemotherapy within 120 days of diagnosis at 10 US medical centers. Patients who received treatment within 60 days from their diagnosis were classified into the short DTI group and those who received treatment beyond 60 days into long DTI group. The primary objective was progression-free survival (PFS), while secondary objectives included overall survival (OS) and cumulative …

Causes Of Death Among Us Medical Residents, Nicholas A. Yaghmour, William E. Bynum, Frederic W. Hafferty, Karen D. Könings, Thomas Richter, Timothy P. Brigham, Thomas J. Nasca

Division of Nephrology Faculty Papers

IMPORTANCE: From 2000 to 2014, the leading causes of medical resident death in the United States were neoplastic diseases and suicide.

OBJECTIVE: To examine whether US medical resident rates of death have changed since 2014 and whether causes of resident death differ by specialty.

DESIGN, SETTING, AND PARTICIPANTS: In this cross-sectional study, residents and fellows who were enrolled in Accreditation Council for Graduate Medical Education (ACGME)-accredited training programs and who died from January 2015 to December 2021 were submitted to the National Death Index to obtain causes of death. These decedents were compared with residents and fellows who died between …

Early Results With Hypofractionated Gamma Knife Radiotherapy For Treatment Of Vestibular Schwannoma, Omar Azmeh, Samuel R. Barber, Maurice King, Moisés A. Arriaga

School of Medicine Faculty Publications

OBJECTIVE: Vestibular schwannoma (VS) management with stereotactic radiation previously only included stereotactic radiosurgery with Gamma Knife (GKRS) or LINAC-based radiotherapy (LBR). Hypofractionated Gamma Knife radiotherapy (hfGKRS) is a novel protocol potentially producing less toxicity than the alternatives. This study examines early results in tumor control, complications and hearing preservation outcomes in a consecutive series of VS patients treated with hfGKRS. STUDY DESIGN: A retrospective review was conducted for all patients with unilateral VS treated with primary hfGKRS at an academic center between 2017 and 2023. SETTING: Tertiary referral center. INTERVENTIONS: Therapeutic. MAIN OUTCOME MEASURES: Pre- and post-treatment imaging, notes and …

Chronic Inflammatory Pain And Chronic Thc Vapor Inhalation Alter Midbrain Neuronal Activity, Leslie K. Kelley, Nicholas W. Gilpin, Jason W. Middleton

School of Medicine Faculty Publications

In an effort to reduce reliance on opioids for the treatment of pain in the clinic, ongoing work is testing the utility of cannabinoid drugs as a potential alternative for treatment of chronic pain. We tested chronic delta-9 tetrahydrocannabinol (THC) vapor inhalation effects on intrinsic and synaptic properties of ventrolateral periaqueductal gray (vlPAG) neurons in male and female rats treated with complete Freund's adjuvant (CFA). We report that chronic THC vapor inhalation modulates intrinsic and synaptic properties of vlPAG neurons, including reductions in action potential firing rate and spontaneous inhibitory synaptic transmission in males, and that these effects occur specifically …

Cervical Cancer Screening Overuse Among Women With And Without Disability In The U.S. From 2007 To 2016, Preeti Zanwar, Chan Shen, Matthew Smith

College of Population Health Faculty Papers

INTRODUCTION: Persons with disability, a recognized health disparity population with complex care needs, may be at risk for cervical cancer screening overuse. However, limited studies have examined cervical cancer screening overuse among women with and without disability using large nationally representative survey data. Among women with and without disability, the authors aimed to provide national estimates of cervical cancer screening overuse and the proportion of cervical cancer screening overuse among younger, middle-age, and older women.

METHODS: The authors first utilized the U.S. Preventive Services Task Force guidelines to conceptualize and define cervical cancer screening overuse for women with and without …

Morphological And Immunohistochemical Support For The Origin Of The Carcinoid Component In Strumal Carcinoids: A Case Report And Literature Review, Yu Liu, Asra Feroze, Liz Yang, Ridin Balakrishnan

School of Medicine Faculty Publications

Strumal carcinoid tumors of the ovary are rare neoplasms composed of an intimate mixture of thyroid and carcinoid tissues. Although various theories regarding their histogenesis have been proposed, evidence confirming the origin of the carcinoid component has been lacking. We report a case of a 40-year-old female with an ovarian strumal carcinoid arising in the background of a mature cystic teratoma. Morphological and immunohistochemical findings support the hypothesis that the carcinoid component originates from the thyroid follicular epithelium, undergoing neuroendocrine differentiation. A single-cell growth pattern was also identified, expanding the known histological spectrum of strumal carcinoids. Our case provides additional …

Analytical Verification Of The Fda Cleared Xpert® Xpress Cov-2 Plus Test For Sars-Cov-2 Detection In Respiratory Specimens, Gabriela M. Henriquez, Neena Kanwar, Rangaraj Selvarangan

Research Days

Introduction

The COVID-19 pandemic, caused by SARS-CoV-2, highlighted severe gaps in broad testing and prompt diagnosis. Rapid real-time RT-PCR assay Xpert® Xpress CoV-2 Plus was developed to enhance SARSCoV-2 detection in respiratory specimens. Using ZeptoMetrix's inactivated organisms, this study seeks to assess its analytical performance and compare its accuracy with current standard of care diagnostic assay.

Methods

The accuracy of the Xpert® Xpress CoV-2 Plus test was evaluated using ZeptoMetrix NATtrol inactivated SARS-CoV-2 organisms diluted with pooled negative nasopharyngeal (NP) swabs. Ten positive and ten negative NP swabs were tested over five days at two sites, with >90% agreement required. …

5x-Multiplier Vs 3-Tier Model For Discharge Opioid Prescriptions After Intra-Abdominal Cancer Surgery: Randomized Clinical Trial Protocol, Brittany C. Fields, Timothy E. Newhook, Heather A. Lillemoe, Wei Qiao, Jose A. Karam, Surena F. Matin, Larissa A. Meyer, Ching-Wei D. Tzeng

Advances in Cancer Education and Quality Improvement

Background

Surgeons provide up to 10% of total opioid prescriptions across all specialties, and more than one-third of surgeon-prescribed medications are opioids. Patient-reported opioid consumption and risk of persistent opioid use beyond the postoperative recovery period correlate with the initial opioid quantity prescribed at discharge. Interventions to reduce postoperative opioid prescribing have demonstrated no adverse effects on pain control or increased need for prescription refill; however, in the absence of standardized prescription protocols, opioid prescribing practices vary widely.

Objective

The study objective is to identify the opioid prescribing model that provides the lowest oral morphine equivalents (OME) volume prescribed at …

Temperature Monitoring In The Cardiac Operating Room, Abby Pint, Clint Humpherys, Dave Stubler, Nathaniel Lata

Research Days

Background: The goal of this project is to improve the accuracy of temperature readings in the cardiac operating room and, in turn, improve patient safety.

Methods: The project obtained nasopharyngeal, tympanic, and bladder/rectal temperature measurements from twenty CPB cases. Measurements were obtained at six critical points: time of incision, initiation of CPB, aortic cross clamping, removal of aortic cross clamping, CPB termination, sternal closure. Data was analyzed to determine discrepancies among methods of measuring temperature for each type of probe utilized. Plan: Tympanic probes are unreliable and provide lower temperature measurements when compared to other probes Do: Temperatures recorded from …

Optimal Diagnostic Strategies For Concussion-Related Vision Disorders: A Review, Iniya K. Adhan, Kammi B. Gunton

Wills Eye Hospital Papers

Concussions are a mild form of traumatic brain injury (TBI) that is typically self-limited and transient with a high prevalence within our communities. Due to the vast visual network interconnectivity, visual symptoms secondary to a concussion occur about 90% of the time. A gold standard to confirm concussion acutely has not been well established. Visual function testing based on symptoms remains the standard of care in off-site evaluation for diagnosis of oculomotor dysfunction. This review covers the current diagnostic strategies for vision based disorders post-concussion for sideline testing, off-site testing, and research driven testing.

Development Of A Light-Based Platform To Assess Cervical Mucus Barrier Function And Physical Mucus Properties, Elizabeth J. Buzbee

McKelvey School of Engineering Graduate Student Theses & Dissertations

Preterm birth is the leading cause of neonatal morbidity and mortality worldwide, yet current clinical tools for predicting its risk lack specificity and reliability. Cervical mucus plays a crucial role in maintaining pregnancy by forming a barrier that protects the uterus against infection. This study investigates the use of laser speckle rheology as a noninvasive technique to assess cervical mucus biomechanics. Synthetic cervical mucus was fabricated at varying hydration levels and tested using a conventional rheometer that confirmed that the mechanical properties of the synthetic mucus samples were representative of physiological cervical mucus. These results were compared to the complex …

Clinical Value Of Chatgpt For Epilepsy Presurgical Decision-Making: Systematic Evaluation Of Seizure Semiology Interpretation, Yaxi Luo, Meng Jiao, Neel Fotedar, Jun-En Ding, Ioannis Karakis, Vikram R. Rao, Melissa Asmar, Xiaochen Xian, Orwa Aboud, Yuxin Wen, Jack J. Lin, Fang-Ming Hung, Hai Sun, Felix Rosenow, Feng Liu

Engineering Faculty Articles and Research

Background: For patients with drug-resistant focal epilepsy, surgical resection of the epileptogenic zone (EZ) is an effective treatment to control seizures. Accurate localization of the EZ is crucial and is typically achieved through comprehensive presurgical approaches such as seizure semiology interpretation, electroencephalography (EEG), magnetic resonance imaging (MRI), and intracranial EEG (iEEG). However, interpreting seizure semiology is challenging because it heavily relies on expert knowledge. The semiologies are often inconsistent and incoherent, leading to variability and potential limitations in presurgical evaluation. To overcome these challenges, advanced technologies like large language models (LLMs)—with ChatGPT being a notable example—offer valuable tools for …

Pterygopalatine Ganglion Blocks In Medicine: Bridging Neuromodulation And Pain Relief, Tori B. Ostrand

Honors Thesis

Chronic pain affects millions of individuals worldwide, presenting as a multifactorial condition that impacts physical, emotional, and socioeconomic well-being. Despite the availability of both pharmacological and non-pharmacological therapies, significant side effects, limited efficacy, and addiction risks drive the need for new, innovative treatments. The pterygopalatine ganglion block (PPGB) is emerging as a promising interventional approach that targets autonomic and neurogenic pathways that may be implicated in chronic pain mechanisms. This thesis reviews the neuroanatomy of the pterygopalatine ganglion, its potential role in autonomic regulation and pain mediation, and its clinical applications in treating headache syndromes such as cluster headaches and …

Schistosoma Haematobium Infection In Ethiopian Children: Evaluating Praziquantel Efficacy, Nutritional Effects, And Diagnosis Using Flukecatcher, Louis Fok

Theses & Dissertations

Urogenital schistosomiasis continues to impact the wellbeing of hundreds of millions of people worldwide and remains a significant public health challenge across Ethiopia. Despite existing knowledge on the disease, there remain significant unanswered questions with regard to its treatment and diagnosis. This dissertation evaluated the efficacy of praziquantel at treating urogenital schistosomiasis, improving nutritional parameters among children and the performance of FlukeCatcher at detecting and determining the intensity of infection. In effecting this, a total of 977 children aged 5 through 15 from the Afar and Gambella regions of Ethiopia were screened for S. haematobium infection using urine filtration microscopy …

Persistent Improvement In Opioid Perceptions And Prescribing For Cancer Surgery: 5-Year Follow-Up, Brittany C. Fields, Timothy E. Newhook, Heather A. Lillemoe, Jessica E. Maxwell, Jose M. Soliz, Keyuri U. Popat, Christina L. Roland, Jean-Nicolas Vauthey, Matthew H. G. Katz, Ching-Wei D. Tzeng

Advances in Cancer Education and Quality Improvement

Background and Objectives

We previously reported that implementation of a department-wide opioid education program led to post-education improvements in opioid perceptions and prescription recommendations, with one-month and one-year retention. With ongoing programmatic and quality improvement efforts, we sought to re-evaluate the retention of these improvements five years after initial efforts.

Methods

Attending surgeons, clinical fellows, and advanced practice providers were surveyed five years after implementation of a comprehensive, departmental opioid reduction framework in August 2018. This framework initially consisted of dedicated opioid education sessions and retrospective assessment of prescribing practices, and subsequently expanded over time to include prospective quality improvement …

Integrating Positive Psychology And Spirituality To Foster Meaning And Well-Being In Older Adults, Crystal Morris

Adultspan Journal

This perspective article explores the integration of positive psychology interventions (PPIs) and spirituality in therapy to foster meaning and well-being in older adults. It highlights exercises such as the positive introduction, positive legacy, character strengths, mindfulness, mindful-based yoga, and a manifestation prayer journaling. The interventions presented are tools to support older adults that may experience depression, difficult life transitions, and the search for renewed meaning. Therapists who integrate PPIs and spirituality into therapy can promote a holistic, non-pathological approach to treatment.

A Systematic Review Of Neutrophilic Alopecias Of The Scalp In The Pediatric Population, Nesreen Shahrour, Layan Shahrour, Rahib K. Islam, Yoseph Dalia

School of Medicine Faculty Publications

Neutrophilic alopecias of the scalp - including dissecting cellulitis of the scalp, folliculitis decalvans, and Acne Keloidalis Nuchae - are rare, scarring, inflammatory disorders with overlapping clinical and histopathologic features that present unique diagnostic and therapeutic challenges in pediatric populations. This systematic review synthesizes findings from 35 eligible studies identified through a search of Medical Literature Analysis and Retrieval System Online, Excerpta Medica Database, Central Cochrane Medical Database, Cumulative Index to Nursing and Allied Health Literature, and Web of Science, focusing on treatment modalities and outcomes in children. Patients with dissecting cellulitis of the scalp often present with erythematous, tender …

A Clinical Review Of Suicide Risks In Dermatology, Rahib K. Islam, Victoria T. Tong, Shari R. Lipner

School of Medicine Faculty Publications

Patients with visible skin diseases, including acne, psoriasis, and atopic dermatitis, face heightened risks of psychological distress, depression, and suicidal ideation, often exacerbated by social stigma and reduced quality of life. This review explores the intersection between dermatology and suicide, highlighting the psychosocial impact of visible skin conditions and the controversies surrounding treatment-related risks, including isotretinoin and biologic exposure. Current evidence suggests that while isotretinoin has been historically linked to mood changes, robust studies do not support a direct association with suicide. Incorporating mental health screenings into dermatological practice is essential for early identification and management of at-risk patients. By …

Towards The Performance Characterization Of A Robotic Multimodal Diagnostic Imaging System, George Papaioannou, Christos Mitrogiannis, Mark Schweitzer, Nikolaos Michailidis, Maria Pappa, Pegah Khosravi, Apostolos Karantanas, Sean Starling, Christian Ruberg

Publications and Research

Characterizing imaging performance requires a multidisciplinary approach that evaluates various interconnected parameters, including dosage optimization and dynamic accuracy. Radiation dose and dynamic accuracy are challenged by patient motion that results in poor image quality. These challenges are more prevalent in the brain/cardiac pediatric patient imaging, as they relate to excess radiation dose that may be associated with various complications. Scanning vulnerable pediatric patients ought to eliminate anesthesia due to critical risks associated in some cases with intracranial hemorrhages, brain strokes, and congenital heart disease. Some pediatric imaging, however, requires prolonged scanning under anesthesia. It can often be a laborious, suboptimal …

Sugammadex For Reversal Of Neuromuscular Blocking Agents Versus Neostigmine - Safety Comparison, Amanda K. Butler, Daniel Belu, Bailey Accardo, Courtney Ayana Bullard, Tracy Mcclinton Dnp, Aprn, Agacnp-Bc, Hget-C, Ebp-C, Dwayne Accardo Dnp, Crna, Faana

Doctor of Nursing Practice Projects

Purpose/Background

Sugammadex and neostigmine are two common drugs used to reverse neuromuscular blockade in anesthesia, but they differ in mechanism of action, side effects, and cost.

Sugammadex provides rapid reversal, has fewer side effects, and has a lower risk of bradycardia than neostigmine. This scoping review examines the frequency of bradycardia in adult surgical patients receiving sugammadex versus neostigmine.

Methods

A scoping review was completed of peer-reviewed articles comparing the incidence of bradycardia in adult surgical patients after the administration of sugammadex and neostigmine for neuromuscular blockade reversal. Findings indicate that sugammadex resulted in fewer adverse events, including bradycardia, than …

Theoretical And Experimental Synthesis Of Β-Fluorinated Morphine Derivative For Selective Binding In Inflamed Tissue, Thu Doan, Amelia Bayha, Adel Martinez, Nayiri Alexander

Student Scholar Symposium Abstracts and Posters

Over the past two decades, the United States has experienced a substantial rise in opioid overdoses and related fatalities. Morphine is a frequent prescription for pain management following traumatic procedures and contributes to potential tolerance and dependency with prolonged use. By reconstructing the structure of morphine, adverse side effects may be eliminated. Previous studies have identified several morphine derivatives that, in theory, could result in fewer side effects. This was determined by a decreased pKₐ of the biochemically active amine group to promote the selective binding in peripheral opioid receptors within inflamed tissue (pH=6-6.5). This activation provides analgesia while central …

Rationally Designed Pentapeptide Analogs Of Aβ19-23 Fragment As Potent Inhibitors Of Aβ42 Aggregation, Sachin B. Baravkar, Yan Lu, Qi Zhao, Hongying Peng, Weilie Zhou, Song Hong

School of Medicine Faculty Publications

Amyloid beta (Aβ42 and Aβ40) aggregation, along with neurofibrillary tangles, is one of the major neurotoxic events responsible for the onset of Alzheimer's disease. Many potent peptide-based inhibitors mainly focusing on central hydrophobic core Aβ16-20 (KLVFF) have been reported in recent years. Herein, we report pentapeptides -, based on the β-turn-inducing fragment Aβ19-23 (FFAED). The synthesis of peptides - was carried out using Fmoc/tBu-based solid-phase peptide synthesis technique, and it was found that pentapeptide potently inhibit the aggregation propensity of Aβ42, when incubated with it at 37 °C for 48 h. The aggregation inhibition study was conducted using thioflavin T-based …