45,532 results match your criteria: "Purdue University[Affiliation]"

The Yucatan Minipig: A Reliable Model for Studying Unilateral Vocal Fold Paralysis.

J Voice

December 2024

Indiana University School of Medicine (IUSM), Indianapolis, Indiana; IUSM Department of Otolaryngology-Head and Neck Surgery, Indianapolis, Indiana; Purdue University Department of Speech, Language, and Hearing Sciences, West Lafayette, Indiana. Electronic address:

Objectives/hypothesis: Given the complex pathology underlying unilateral vocal fold paralysis (UVFP), there has been limited systematic exploration of curative treatments in humans. Central to the investigation of experimental therapies includes establishing a reliable and analogous large animal model. The study goal was to create a standardized porcine model of UVFP by establishing characteristic pathophysiology and functional outcomes.

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Background: Epigenetic age (EA) is an age estimate, developed using DNA methylation (DNAm) states of selected CpG sites across the genome. Although EA and chronological age are highly correlated, EA may not increase uniformly with time. Departures, known as epigenetic age acceleration (EAA), are common and have been linked to various traits and future disease risk.

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Objectives: The aim of this study was to compare the effectiveness of different attachment shapes and locations on the extrusion of the upper left lateral incisor (UL2) using thermoplastic aligners.

Materials And Methods: Seven typodonts were digitally printed with hemi-ellipsoid or rectangular attachments in the incisal, middle or cervical third of the UL2. Five clear aligners were fabricated for each typodont; each was tested twice.

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Mechanistic insights into the selective targeting of P2X3 receptor by camlipixant antagonist.

J Biol Chem

December 2024

Department of Biological Sciences, Purdue University, West Lafayette, IN-47907, USA; Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN-47907, USA. Electronic address:

ATP-activated P2X3 receptors play a pivotal role in chronic cough, affecting more than 10% of the population. Despite the challenges posed by the highly conserved structure of P2X receptors, efforts to develop selective drugs targeting P2X3 have led to the development of camlipixant, a potent, selective P2X3 antagonist. However, the mechanisms of receptor desensitization, ion permeation, and structural basis of camlipixant binding to P2X3 remain unclear.

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Hypersensitive meta-crack strain sensor for real-time biomedical monitoring.

Sci Adv

December 2024

Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea.

Real-time monitoring of infinitesimal deformations on complex morphologies is essential for precision biomechanical engineering. While flexible strain sensors facilitate real-time monitoring with shape-adaptive properties, their sensitivity is generally lower than spectroscopic imaging methods. Crack-based strain sensors achieve enhanced sensitivity with gauge factors (GFs) exceeding 30,000; however, such GFs are only attainable at large strains exceeding several percent and decline below 10 for strains under 10, rendering them inadequate for minute deformations.

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Protocol for artificial intelligence-guided neural control using deep reinforcement learning and infrared neural stimulation.

STAR Protoc

December 2024

Weldon School of Biomedical Engineering, the Center for Implantable Devices, and the Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN 47907, USA; Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA. Electronic address:

Closed-loop neural control is a powerful tool for both the scientific exploration of neural function and for mitigating deficiencies found in open-loop deep brain stimulation (DBS). Here, we present a protocol for artificial intelligence-guided neural control in rats using deep reinforcement learning (RL) and infrared neural stimulation (INS). We describe steps for integrating RL closed-loop control into neuroscience and neuromodulation studies.

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Impact of HPMCAS Grade on the Release of Weakly Basic Drugs from Amorphous Solid Dispersions.

Mol Pharm

December 2024

Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, Indiana 47907, United States.

Oppositely charged species can form electrostatic interactions in aqueous solution, and these may lead to reduced solubility of the interacting components. Herein, insoluble complex formation between the lipophilic weakly basic drugs, cinnarizine or loratadine, and the enteric polymer, hydroxypropyl methylcellulose acetate succinate (HPMCAS), was studied and used to better understand drug and polymer release from their corresponding amorphous solid dispersions (ASDs). Surface area normalized release experiments were performed at various pH conditions for three different grades of HPMCAS, LF, MF and HF, as well as their ASDs.

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Systematically-designed mixtures outperform single fibers for gut microbiota support.

Gut Microbes

December 2025

Whistler Center for Carbohydrate Research, Department of Food Science, Purdue University, West Lafayette, IN, USA.

Dietary fiber interventions to modulate the gut microbiota have largely relied on isolated fibers or specific fiber sources. We hypothesized that fibers systematically blended could promote more health-related bacterial groups. Initially, pooled fecal fermentations were used to design dietary fiber mixtures to support complementary microbial groups related to health.

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This study examines the factors shaping individuals' reactions to health-protective norm violations through the lens of cognitive accessibility, the risk-as-feelings hypothesis, and the tripartite decision-making framework. By surveying 1,426 U.S.

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Lactating sows and their litters are particularly vulnerable to heat stress (HS). Heat stress decreases sow fertility, feed intake, milk production, and litter growth. Approaches are needed to mitigate the negative effects of HS on animal welfare and oxidative damage to tissues.

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Careers in the poultry industry are ever evolving to address global challenges and include collaborations with others from diverse backgrounds and cultures from around the world. Employers are seeking college graduates who are prepared to use novel approaches to address local and global industry challenges. A primary goal of undergraduate animal and poultry science programs should be to focus on courses and opportunities for students to engage in activities that promote workforce and essential skill development.

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Thermal radiation with a twist.

Science

December 2024

School of Electrical and Computer Engineering, Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA.

Carbon nanotube filaments with a twisted geometry emit spinning heat waves at high temperatures.

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Purpose: This study aims to investigate whether artificial intelligence can improve the diagnostic accuracy of vertigo related diseases.

Experimental Design: Based on the clinical guidelines, clinical symptoms and laboratory test results were extracted from electronic medical records as variables. These variables were then input into a machine learning diagnostic model for classification and diagnosis.

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Layer-number-dependent photoswitchability in 2D MoS-diarylethene hybrids.

Nanoscale

December 2024

School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA.

Molybdenum disulfide (MoS) is a notable two-dimensional (2D) transition metal dichalcogenide (TMD) with properties ideal for nanoelectronic and optoelectronic applications. With growing interest in the material, it is critical to understand its layer-number-dependent properties and develop strategies for controlling them. Here, we demonstrate a photo-modulation of MoS flakes and elucidate layer-number-dependent charge transfer behaviors.

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Numerical study of the effects of minor structures and mean velocity fields in the cerebrospinal fluid flow.

Fluids Barriers CNS

December 2024

School of Mechanical Engineering, Purdue University, 585 Purdue Mall, West Lafayette, 47907, IN, USA.

The importance of optimizing intrathecal drug delivery is highlighted by its potential to improve patient health outcomes. Findings from previous computational studies, based on an individual or a small group, may not be applicable to the wider population due to substantial geometric variability. Our study aims to circumvent this problem by evaluating an individual's cycle-averaged Lagrangian velocity field based on the geometry of their spinal subarachnoid space.

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Background: Reproductive efficiency is crucial for the long-term economic sustainability of beef cattle production. Pregnancy loss and stillbirth are complex reproductive traits that do not yet have their genomic background fully understood, especially in zebu breeds (Bos taurus indicus). Hence, this study aimed to perform a genome-wide association study (GWAS) and functional annotation for conception success (CS), pregnancy loss (PL), stillbirth (SB), and pre-weaning calf mortality (PWM) in Nellore cattle.

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Targeted drug delivery with responsive release is an emerging research area. Along this line, we report herein the fabrication and characterization of zeolite/chitosan (ZA/CS) composite as a pH-responsive drug carrier for ibuprofen. The drug loading and release, along with cytotoxicity, have been examined to assessing the effectiveness of ZA/CS composite as an ibuprofen therapeutic delivery system.

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Recent Advances in Drying and Development of Solid Formulations for Stable mRNA and siRNA Lipid Nanoparticles.

J Pharm Sci

December 2024

Department of Industrial and Molecular Pharmaceutics, College of Pharmacy, Purdue University, West Lafayette, IN 47907, USA. Electronic address:

Current RNA lipid nanoparticle (LNP) based products are typically liquid formulations that require ultra-cold storage temperatures for stability. To address this limitation, recent efforts have focused on enhancing stability and enabling room temperature storage by converting these formulations into solid forms through drying processes such as lyophilization, spray drying, and spray-freeze drying. Nevertheless, the drying process itself can influence the stability of RNA/LNP formulations.

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The objective of this randomized clinical trial was to assess whether early intervention with a nonsteroidal anti-inflammatory drug (NSAID) following a disease alert generated by automated milk feeders could reduce diarrhea severity and improve performance in dairy calves. Seventy-one Holstein calves were enrolled on an automated milk feeder (recorded milk intake and drinking speed) at 3 d of age and received up to 15 L/d (150 g/L) of milk replacer until 35 d of age. An alert that was previously validated as diagnostically accurate to identify calves at risk for diarrhea was used using automated milk feeder data (≤60% rolling dividends in milk intake and/or drinking speed over 2 d).

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AMPylation is a post-translational modification (PTM) whereby adenosine monophosphate (AMP) from adenosine triphosphate (ATP) is transferred onto protein hydroxyl groups of serine, threonine, or tyrosine. Recently, an actin-dependent AMPylase namely LnaB from the bacterial pathogen Legionella pneumophila was found to AMPylate phosphate groups of phosphoribosylated ubiquitin and Src family kinases. LnaB represents an evolutionarily distinct family of AMPylases with conserved active site Ser-His-Glu residues.

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Sludge mature compost (SMC) is notable for its high production, easy accessibility, and stable supply. This study investigated the impact of the SMC addition and different aeration rates on the humification and nitrogen fixing process during kitchen waste composting. The results demonstrated that addition of SMC prolonged the thermophilic phase, as a comparison, increased aeration shortened this phase.

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Structure-activity relationship studies and design of a PTPN22 inhibitor with enhanced isozyme selectivity and cellular efficacy.

Eur J Med Chem

December 2024

Borch Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN 47907, USA; James Tarpo Jr. and Margaret Tarpo Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA; Institute for Drug Discovery, Purdue University, West Lafayette, IN 47907, USA; Institute for Cancer Research, Purdue University, West Lafayette, IN 47907, USA. Electronic address:

Protein tyrosine phosphatase non-receptor type 22 (PTPN22) lies downstream of the T cell receptor (TCR) and attenuates T cell signaling by dephosphorylating key effector proteins such as LCK, Zap70, and the intracellular region of the TCR. Recent evidence implicates PTPN22 as an exciting target for enabling immunotherapeutic efficacy against cancer. We carried out structural optimization of a benzofuran salicylic acid-based orthosteric PTPN22 inhibitor 8b, using a combination of crystal structure analysis, synthesis, matched molecular pairs analysis, and biochemical and cell-based assays.

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Objective: To assess the impact of clopidogrel or rivaroxaban administration on recurrence of arterial thromboembolism (ATE) in cats that have recovered from cardiogenic ATE.

Methods: This multicenter prospective double-masked protocol enrolled 45 cats that had recovered from cardiogenic ATE and were randomized to receive either clopidogrel (18.75 mg/cat, PO; n = 19) or rivaroxaban (2.

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Objective: A comprehensive research was conducted to investigate the incidence of avian pathogenic Escherichia coli (APEC) in ostrich farms in Egypt.

Methods: The study involved seven farms with bird ages ranging from 1 to 12 weeks and capacities of 2,000 to 5,000 birds per farm. 175 tissue specimens were collected from different organs (liver, spleen, heart, lung, kidney, intestine, and meat).

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