13,079 results match your criteria: "IA 52242; Institute for Stem Cell Biology and Regenerative Medicine[Affiliation]"

Female specific interactions of serotonin and testosterone in the rostral ventromedial medulla after activity-induced muscle pain.

J Pain

November 2024

Department of Physical Therapy and Rehabilitation Science, University of Iowa, Iowa City, IA 52242, USA; Department of Neuroscience and Pharmacology, University of Iowa, Iowa City, IA 52242, USA. Electronic address:

Classical preclinical studies show that serotonin (5-HT) injected into the rostral ventromedial medulla (RVM) produces analgesia that is blocked by 5-HT2 receptor antagonists. One key modulator of 5-HT activity is the serotonin transporter (SERT) which reduces serotonergic signaling through reuptake into the presynaptic terminal. In the activity-induced muscle pain model, females show widespread pain and increased SERT expression in the RVM whereas males show localized pain and no changes in SERT expression.

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Opioid-seeking behaviors depend on glutamatergic plasticity in the nucleus accumbens core (NAcc). Here we investigated whether the behavioral and synaptic effects of opioids are influenced by acid-sensing ion channel 1A (ASIC1A). We tested the effects of ASIC1A on responses to several opioids and found that mice had elevated behavioral responses to acute opioid administration as well as opioid seeking behavior in conditioned place preference (CPP).

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Bipolar disorder's etiology involves genetics, environmental factors, and gene-environment interactions, underlying its heterogeneous nature and treatment complexity. In 2020, Forstner and colleagues catalogued 378 sequence variants co-segregating with familial bipolar disorder. A notable candidate was an R59Q missense mutation in the PDZ (PSD-95/Dlg1/ZO-1) domain of RGS12.

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The Influence of Dopaminergic Medication on Regularity and Determinism of Gait and Balance in Parkinson's Disease: A Pilot Analysis.

J Clin Med

October 2024

Department of Health and Human Performance, University of Houston, 3875 Holman Street, 104 Garrison Gym, Houston, TX 77204, USA.

: Understanding how dual-tasking and Parkinson's disease medication affect gait and balance regularity can provide valuable insights to patients, caregivers, and clinicians regarding frailty and fall risk. However, dual-task gait and balance studies in PD most often only employ linear measures to describe movement regularity. Some have used nonlinear techniques to analyze PD performances, but only in the on-medication state.

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Endothelial cells respond to mechanical force by stimulating cellular signaling, but how these pathways are linked to elevations in cell metabolism and whether metabolism supports the mechanical response remains poorly understood. Here, we show that the application of force to endothelial cells stimulates VE-cadherin to activate liver kinase B1 (LKB1; also known as STK11) and AMP-activated protein kinase (AMPK), a master regulator of energy homeostasis. VE-cadherin-stimulated AMPK increases eNOS (also known as NOS3) activity and localization to the plasma membrane, reinforcement of the actin cytoskeleton and cadherin adhesion complex, and glucose uptake.

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Surgical Management of Neuroendocrine Tumor Liver Metastases.

Hematol Oncol Clin North Am

February 2025

Department of Surgery, Division of Surgical Oncology and Endocrine Surgery, University of Iowa Carver College of Medicine, 200 Hawkins Drive, Iowa City, IA 52242, USA. Electronic address:

Patients with neuroendocrine tumor liver metastases (NETLMs) may develop carcinoid syndrome, carcinoid heart disease, or other symptoms from overproduction of hormones. Hepatic resection and cytoreduction is the most direct treatment of NETLMs in eligible patients, and cytoreduction improves symptoms, may reduce the sequelae of carcinoid syndrome, and extends survival. Parenchymal-sparing procedures, such as ablation and enucleation, should be considered during cytoreduction to maximize treatment of multifocal tumors while preserving healthy liver tissue.

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Aptamers are short single-stranded DNA or RNA molecules with high affinity and specificity for targets and are generated using the iterative systematic evolution of ligands by exponential enrichment (SELEX) process. Next-generation sequencing (NGS) revolutionized aptamer selections by allowing a more comprehensive analysis of SELEX-enriched aptamers as compared to Sanger sequencing. The current challenge with aptamer NGS datasets is identifying a diverse cohort of candidate aptamers with the highest likelihood of successful experimental validation.

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Article Synopsis
  • This study investigates the differences in cardiac strain between children with multisystem inflammatory syndrome (MIS-C) and a control group using advanced cardiac magnetic resonance imaging techniques.
  • The research involved a retrospective analysis of 32 MIS-C patients and 64 controls, examining cardiac function through automated strain measurements at different heart muscle layers.
  • Results indicated that there were no significant differences in overall cardiac strain or physical characteristics (such as age, height, and weight) between the two groups at medium-term follow-up after the diagnosis of MIS-C.
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Context: Patients with aggrecan (ACAN) deficiency present with dominantly inherited short stature, as well as early-onset joint disease.

Objective: The objective of this study was to evaluate the efficacy and safety of recombinant human GH (rhGH) on linear growth in ACAN-deficient children.

Methods: Open-label, single-arm, prospective study over 3 years recruiting 10 treatment-naïve patients with heterozygous mutations in , age ≥2 years, prepubertal, and normal IGF-I concentration.

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Article Synopsis
  • In Finland, isolated cleft palate (CP) occurs more frequently than cleft lip with or without cleft palate (CL/P), which is the opposite trend seen in other European countries.
  • A genome-wide association study revealed a specific single nucleotide polymorphism (rs570516915) strongly linked to CP in the Finnish population, showing significant statistical results and confirmed in other cohorts.
  • The risk allele for rs570516915 disrupts a binding site for the IRF6 transcription factor, leading to decreased IRF6 expression, indicating that this genetic alteration may be a key factor in the mechanism causing CP.
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Pembrolizumab-induced cytokine release syndrome with severe encephalopathy in the setting of clear cell vaginal carcinoma: A case report.

Gynecol Oncol Rep

December 2024

Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, United States.

•Pembrolizumab is increasingly used in the treatment of gynecologic cancers and has a half-life of 26 days.•Cytokine release syndrome with severe encephalopathy is a rare immune-mediated adverse effect.•Supportive care remains an important part of treatment of immune-mediated toxicity.

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Outcomes of Retinal Detachment (RD) after Open Globe Injury (OGI) and Independent Validation of the RD-OGI Scoring System.

Ophthalmology

October 2023

Department of Ophthalmology and Visual Sciences, Carver College of Medicine, University of Iowa, 200 Hawkins Drive, PFP 11196-J, Iowa City, IA 52242, USA. Electronic address:

Article Synopsis
  • The study aims to validate the RD-OGI Score as a predictive tool for estimating retinal detachment risk following open globe injury, analyzing its effectiveness across different risk categories.
  • Conducted as a retrospective analysis of 236 eyes with open globe injuries, the research found a strong correlation between predicted and actual retinal detachment rates based on the RD-OGI Score.
  • The RD-OGI Score showcased high accuracy and sensitivity in predicting retinal detachment, with outcomes indicating that higher risk groups experienced significantly worse visual acuity compared to lower risk groups.
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Laboratory Informatics Approaches to Improving Care for Gender- Diverse Patients.

Clin Lab Med

December 2024

Department of Pathology, University of Iowa Health Care, 200 Hawkins Drive C-671 GH, Iowa City, IA 52242, USA.

Improving care for gender-diverse (GD) patients necessitates developing informatics tools and approaches to support optimal laboratory testing. This requires increased functionality and standardization of laboratory information system/electronic health record and data collection processes. Data tailored to accommodate immediate clinical care and clinical decision support (CDS) also have an impact on interoperability and downstream data needs for patients.

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Article Synopsis
  • The study aimed to evaluate a web-based intervention using personalized avatars to improve understanding of community immunity (herd immunity) and its impact on individuals' risk perception regarding vaccine-preventable diseases like measles and influenza.
  • Researchers developed an interactive application where users create avatars that represent themselves and others in their community, which illustrates how infections spread with and without community immunity.
  • The trial with 3883 Canadian adults found that participants who used the web application showed improved risk perception, motivations, and emotions related to vaccination compared to those in a control group, validating the effectiveness of the intervention.
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p66shc deficiency attenuates high glucose-induced autophagy dysfunction in Schwann cells.

Korean J Physiol Pharmacol

January 2025

Department of Physiology & Medical Science, College of Medicine, Chungnam National University, Daejeon 34134, Korea.

Schwann cells are the most abundant cells in the peripheral nervous system, maintaining the development, function and regeneration of peripheral nerves. Defects in these Schwann cells injury response potentially contribute to the pathogenesis of diabetic peripheral neuropathy (DPN), a common complication of diabetes mellitus. The protein p66shc is essential in regulating oxidative stress responses, autophagy induction and cell survival, and is also vital in the development of DPN.

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Muscle inflammation is regulated by NF-κB from multiple cells to control distinct states of wasting in cancer cachexia.

Cell Rep

November 2024

Department of Pediatrics, Darby Children's Research Institute, Medical University of South Carolina, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA. Electronic address:

Although cancer cachexia is classically characterized as a systemic inflammatory disorder, emerging evidence indicates that weight loss also associates with local tissue inflammation. We queried the regulation of this inflammation and its causality to cachexia by exploring skeletal muscle, whose atrophy strongly associates with poor outcomes. Using multiple mouse models and patient samples, we show that cachectic muscle is marked by enhanced innate immunity.

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Postoperative pain is a common concern following root canal treatments (RCT), impacting both patients and oral health practitioners. This systematic review and meta-analysis aimed to evaluate the effectiveness of laser treatment modalities in reducing postoperative pain compared to conventional methods after primary and secondary RCT in permanent mature teeth. A search of three electronic databases (PubMed, ScienceDirect, and The Cochrane Library) was conducted, using a broad range of keywords and terms.

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Article Synopsis
  • Drosophila female germline stem cells (GSCs) undergo asymmetric mitosis with a functional nuclear envelope, relying on a unique centrosome cycle that involves modified interactions with the nuclear lamina.
  • The protein Emerin is crucial for maintaining GSC centrosome structure, and its absence leads to excessive centrosome material retention and abnormal GSC behavior, resulting in reduced stem cell survival.
  • Interestingly, reducing centrosome material in emerin mutants can improve GSC survival and differentiation, indicating the importance of centrosome structure in preserving stem cell function.
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Design and Implementation of a Computer-Controlled Hybrid Oscillatory Ventilator.

J Med Device

March 2025

Departments of Anesthesia, Radiology Roy J. Carver Department of Biomedical Engineering, University of Iowa, 200 Hawkins Dr, Iowa City, IA 52242.

During mechanical ventilation, lung function and gas exchange in structurally heterogeneous lungs may be improved when volume oscillations at the airway opening are applied at multiple frequencies simultaneously, a technique referred to as multifrequency oscillatory ventilation (MFOV). This is in contrast to conventional high-frequency oscillatory ventilation (HFOV), for which oscillatory volumes are applied at a single frequency. In the present study, as a means of fully realizing the potential of MFOV, we designed and tested a computer-controlled hybrid oscillatory ventilator capable of generating the flows, tidal volumes, and airway pressures required for MFOV, HFOV, conventional mechanical ventilation (CMV), as well as oscillometric measurements of respiratory impedance.

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We conducted a genome-wide CRISPR/Cas9 screen in suspension 293-F cells transduced with rAAV5. The highly selected genes revealed after two rounds of screens included the previously reported , , and , along with a cluster of genes involved in glycan biogenesis, Golgi apparatus localization and endoplasmic reticulum penetration. In this report, we focused on solute carrier family 35 member A1 (), a Golgi apparatus-localized cytidine 5'-monophosphate-sialic acid (CMP-SIA) transporter.

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This study addresses the prevalent issue of missing data in patient-reported outcome datasets, particularly focusing on head and neck cancer patient symptom ratings sourced from the MD Anderson Symptom Inventory. Given that many data mining and machine learning algorithms necessitate complete datasets, the accurate imputation of missing data as an initial step becomes crucial. In this study we propose, for the first time, the use of collaborative filtering for imputing missing head and neck cancer patient symptom ratings.

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Untreated or undertreated pain is well established as a significant problem, but unidentified pain is a distinct construct that still needs to be clearly modeled or fully described. This paper aims to develop a conceptual model of unidentified pain in humans with the goal of future development of an unidentified pain risk tool. A multi-phase process was employed consisting sequentially of 1) brainstorming followed by consensus building, 2) peer-review and publication of an integrative theoretical review protocol for "unidentified pain," 3) conduct of the integrative review, and 4) a repeated brainstorming session to identify areas of risk for unidentified pain to produce a conceptual model.

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Article Synopsis
  • Staphylococcus aureus (SA) is a significant bacterial pathogen that leads to serious infections in humans, causing conditions like meningitis, endocarditis, and sepsis.
  • The literature review focuses on the immune responses to SA and methicillin-resistant Staphylococcus aureus (MRSA), highlighting their mechanisms to evade the immune system and exploring vaccine and immunotherapy options.
  • Promising vaccine approaches such as toxoid vaccines, along with antitoxin and immunomodulating therapies, show potential, but further research in human clinical studies is necessary to ensure safety and effectiveness.
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