Medicine and Health Sciences Commons^™

Examining The Potential Of Vitamin C Supplementation In Tissue-Engineered Equine Superficial Digital Flexor Tendon Constructs, Michael J Mienaltowski, Mitchell Callahan, Nicole L Gonzales, Angelique Wong

Journal Articles

Because equine tendinopathies are slow to heal and often recur, therapeutic strategies are being considered that aid tendon repair. Given the success of utilizing vitamin C to promote tenogenesis in other species, we hypothesized that vitamin C supplementation would produce dose-dependent improvements in the tenogenic properties of tendon proper (TP) and peritenon (PERI) cells of the equine superficial digital flexor tendon (SDFT). Equine TP- and PERI-progenitor-cell-seeded fibrin three-dimensional constructs were supplemented with four concentrations of vitamin C. The gene expression profiles of the constructs were assessed with 3'-Tag-Seq and real-time quantitative polymerase chain reaction (RT-qPCR); collagen content and fibril ultrastructure …

Pharmacokinetic Evaluation Of Intravenous Vitamin C: A Classic Pharmacokinetic Study., Ping Chen, Greg Reed, Joyce Jiang, Yaohui Wang, Jean Sunega, Ruochen Dong, Yan Ma, Anna E. Esparham, Ryan Ferrell, Mark Levine, Jeanne Drisko, Qi Chen

Manuscripts, Articles, Book Chapters and Other Papers

Purpose: Intravenous vitamin C (IVC) is used in a variety of disorders with limited supporting pharmacokinetic data. Herein we report a pharmacokinetic study in healthy volunteers and cancer participants with IVC doses in the range of 1-100 g.

Methods: A pharmacokinetic study was conducted in 21 healthy volunteers and 12 oncology participants. Healthy participants received IVC infusions of 1-100 g; oncology participants received IVC infusions of 25-100 g. Serial blood and complete urine samples were collected pre-infusion and for 24 h post-infusion. Pharmacokinetic parameters were computed using noncompartmental methods. Adverse events were monitored during the study.

Results: In both cohorts, …

A Sailor’S Disease Presenting In Urban America With Red Spots On The Legs, John A. Buchan, Bruce H. Gray

Cooper Rowan Medical Journal

Sailors were often affected by nutritional deficiencies due to the absence of fresh foods on long voyages. One example is the development of scurvy from a lack of vitamin C ingestion. In modern society in which fresh food are available this disease is infrequently recognized. The following case describes a 62-year-old male who presented with “red spots” on his legs and a large area of ecchymosis on his thigh. After initial testing failed to elicit a cause, a dietary history revealed that the patient had a peculiar diet of only ice cream with a total avoidance of fruits and vegetables. …

Research Visualization Of Different Treatment Modalities To Treat Covid-19 Infection: Bibliometric Analysis Of Pubmed Database, Abeel Naseer, Muhammad Shoaib, Nusrat Ali, Imtiaz Ahmad

Library Philosophy and Practice (e-journal)

This paper designed to examine research published in PubMed indexed journals of different treatment modalities to treat COVID -19 infection employing bibliometric analysis technique from 2020 to 2021. The purpose was to consolidate the published scholarly work in the PubMed database on different treatment modalities including vaccine, oxygen supplementation, dexamethasone or steroids, aspirin, heparin, remdesivir, zinc, vitamin c or ascorbic acid, oxygen, anti-malarial like chloroquine and hydroxychloroquine, and azithromycin or macrolides. We employed a bibliometric analysis technique and found a total of 3043 published documents. The study findings depicted that vaccine and COVID-19 top was at the top of the …

Stress-Induced Epinephrine Enhances Lactate Dehydrogenase A And Promotes Breast Cancer Stem-Like Cells, Bai Cui, Yuanyuan Luo, Pengfei Tian, Fei Peng, Jinxin Lu, Yongliang Yang, Qitong Su, Bing Liu, Jiachuan Yu, Xi Luo, Liu Yin, Wei Cheng, Fan An, Bin He, Dapeng Liang, Sijin Wu, Peng Chu, Luyao Song, Xinyu Liu, Huandong Luo, Binhua P. Zhou

Molecular and Cellular Biochemistry Faculty Publications

Chronic stress triggers activation of the sympathetic nervous system and drives malignancy. Using an immunodeficient murine system, we showed that chronic stress–induced epinephrine promoted breast cancer stem-like properties via lactate dehydrogenase A–dependent (LDHA-dependent) metabolic rewiring. Chronic stress–induced epinephrine activated LDHA to generate lactate, and the adjusted pH directed USP28-mediated deubiquitination and stabilization of MYC. The SLUG promoter was then activated by MYC, which promoted development of breast cancer stem-like traits. Using a drug screen that targeted LDHA, we found that a chronic stress–induced cancer stem-like phenotype could be reversed by vitamin C. These findings demonstrated the critical importance of psychological …

Parenteral Ascorbic Acid For Treatment Of Sepsis, Lindsey Hiatt

Physician Assistant Scholarly Project Posters

Sepsis kills nearly 1 million people each year in the United States and sepsis-related hospitalizations cost approximately $24 billion annually (Paoli, Reynolds, Sinha, Gitlin, & Crouser, 2018). Current treatment guidelines are limited to targeted antibiotics and hemodynamic support. While antibiotics are the definitive treatment to eradicate the infectious pathogen, there are currently no standard-of-care treatments that consistently and successfully attenuate the damage sustained to the body by its own inflammatory response to infection. Many different treatments have been trialed and failed to show improved outcomes. Vitamin C, or ascorbic acid, has long been associated with supporting immune function, and has …

Effects Of Six Common Dietary Nutrients On Murine Intestinal Organoid Growth, Tenson Cai, Yijun Qi, Albert Jergens, Michael Wannemuehler, Terrence A. Barrett, Qun Wang

Internal Medicine Faculty Publications

The intestinal epithelium of the gastrointestinal (GI) tract constantly renews itself to absorb nutrients and provide protection for the body from the outside world. Since the intestinal epithelium is constantly exposed to various chemicals and dietary components, it is critical to determine which constituents promote or inhibit intestinal epithelium health and growth rate. Intestinal organoids, three-dimensional miniature models of the intestines, represent an ex vivo tool to investigate intestinal physiology and growth patterns. In this study, we measured the growth rates of murine intestinal organoids exposed to various concentrations of different dietary constituents. Results indicate that caffeic acid inhibited organoid …

Reduction Of Oxidative Stress And Storage Lesions (Rcsl) In Red Blood Cells: Analysis Of Ascorbic Acid (Aa), N-Acetylcysteine Amide (Ad4), And Serotonin (5-Ht), Shanmuka Gadiraju

AUCTUS: The Journal of Undergraduate Research and Creative Scholarship

Oxidative stress is a common occurrence in red blood cell (RBC) storage in blood banks throughout the world. Typically RBC units stored under routine standard protocol (stored in SAGM-CPD additive solution) can only be kept up to forty-two days for transfusion usage before being discarded. I am studying the effects of Ascorbic Acid (AA), N-acetylcysteine amide (AD4), and Serotonin or 5-hydroxytryptamine (5- HT) as additives in blood bank storage to find out if these additives can reduce storageinduced oxidative stress on red blood cells (RBCs), as well as to understand how potential blood storage additives can affect the shelf life …

Relb Expression Determines The Differential Effects Of Ascorbic Acid In Normal And Cancer Cells, Xiaowei Wei, Yong Xu, Fang Fang Xu, Luksana Chaiswing, David M. Schnell, Teresa Noel, Chi Wang, Jinfei Chen, Daret K. St. Clair, William H. St. Clair

Toxicology and Cancer Biology Faculty Publications

Cancer cells typically experience higher oxidative stress than normal cells, such that elevating pro-oxidant levels can trigger cancer cell death. Although pre-exposure to mild oxidative agents will sensitize cancer cells to radiation, this pre-exposure may also activate the adaptive stress defense system in normal cells. Ascorbic acid is a prototype redox modulator that when infused intravenously appears to kill cancers without injury to normal tissues; however, the mechanisms involved remain elusive. In this study, we show how ascorbic acid kills cancer cells and sensitizes prostate cancer to radiation therapy while also conferring protection upon normal prostate epithelial cells against radiation-induced …

Employing The Enzyme Cofactor Function Of Ascorbic Acid To Affect Oncogenic Pathways In Human Melanoma: Modulating Hypoxia Inducible Factor-1Α And Dna Demethylation To Reduce Malignant Potential, Adam Patrick Fischer

Theses, Dissertations and Capstones

Dioxygenase enzymes such as the HIF hydroxylases (PHD1-3, FIH) and the Ten-eleven translocation (TET1-3) enzymes regulate the activity of the hypoxia inducible factor-1_a (HIF1_a) transcription factor and the DNA methylation status of cells, respectively. Aberrant accumulation and activation of HIF-1_a can allow malignant cells to acquire attributes that promote progression, chemotherapy resistance, and survival, while aberrant hypermethylation of gene promoters can silence the expression of tumor suppressor genes essential to preventing tumorigenesis. Inadequate levels of intracellular ascorbic acid (AA), a necessary cofactor for optimal dioxygenase enzyme function, could potentiate these tumorigenic conditions. In fact, plasma levels …

Effect Of Vitamins C And E On Endothelial Function In Type 1 Diabetes Mellitus, Rachel-Marie Cazeau, Hong Huang, John A. Bauer, Robert P. Hoffman

Pediatrics Faculty Publications

Background/Objectives. Endothelial dysfunction due to hyperglycemia-induced oxidative damage is an important predictor of future cardiovascular risk in patients with type 1 diabetes mellitus (T1DM) and is present in adolescent T1DM. We hypothesized that combined treatment with the antioxidant vitamins C and E might improve endothelial function (EF) and other biochemical risk factors in adolescents with T1DM. Subjects/Methods. Open-label antioxidant supplementation was given for six weeks with endpoint measurements collected at baseline and study completion. Endpoints measured included EF and plasma measurements of biochemical endothelial risk. Results. Two males and 7 females were studied. Mean age was 12.9 ± 0.9 yrs; …

The Timing Of Fluoxetine, Simvastatin And Ascorbic Acid Administration In A Post-Ischemic Stroke Environment Affects Infarct Volume And Hemorrhagic Transformation Frequency, Neal R. Verma

Browse all Theses and Dissertations

Previous animal experiments have indicated that administration of fluoxetine and simvastatin at 20-26 hours post-stroke decreases the volume of ischemic infarcts. This experiment expanded on previous experiments by adding ascorbic acid to the post-stroke regimen, initiating simvastatin pre-stroke, and adding a third initiation time frame (48-54 hours). Male retired breeder Sprague-Dawley rats were on simvastatin for 7 days prior to stroke induction. Combined medications of 5 milligrams/kilogram of fluoxetine, 1 milligram/kilogram of simvastatin and 20 milligrams/kilogram of ascorbic acid were orally administered at 6-12 hours, 20-26 hours, or 48-54 hours, respectively, following stroke induction. Adult rats that were treated 20-26 …

Comparative Analysis Of Ascorbic Acid In Human Milk And Infant Formula Using Varied Milk Delivery Systems, Jimi Francis, Kristy Rogers, Paul Brewer, Darby Dickton, Ron Pardini

Health and Kinesiology Faculty Publications and Presentations

Background

The expression of human milk for later use is on the rise. Bottle systems are used to deliver the expressed milk. Research has shown that storage of both human milk and artificial baby milk, or infant formula, leads to a loss of ascorbic acid (commonly called Vitamin C). As milk is removed from the bottle during feeding and replaced by ambient air, it is unknown if loss of ascorbic acid occurs during the course of a feeding. The purpose of this study is to investigate the effect of the milk delivery system on levels of ascorbic acid in human …

Effects Of Environmental Temperature And Dietary Ascorbic Acid On The Diurnal Feeding Pattern Of Broilers, Hasan Rüştü Kutlu, J. Michael Forbes

Turkish Journal of Veterinary & Animal Sciences

The present study was carried out to determine the diurnal feeding patterns of broiler chickens given a choice between ascorbic acid (AA) supplemented and unsupplemented feeds under heated or unheated conditions. Broiler chickens were offered supplemented (with 200 mg AA/kg feed) and unsupplemented feeds, and the feeding behaviour for each feed was monitored by continuous recording of the weight of the feed container for 4 days under unheated (UH) and the next 4 days under heated (H) conditions. The weight and timing of each meal was used to calculate cumulative feed intake, AA intake, number of meals, mean meal size …

Oncolog, Volume 44, Number 10, October 1999, Dawn Chalaire, Alison Rufffin, Vickie J. Williams

OncoLog MD Anderson's Report to Physicians (All issues)

• Stereotadic Unit Expands Treatment Options for Patients with Brain Tumors
• New Center Teams With Community Physicians to Treat Patients With Advanced Cancer
• IRS Deduction Gives Smokers One More Reason to Quit
• Accuracy Essential in Stereotactic Radiosurgery
• House Call: Vitamins and Cancer Risk: Why You Should Eat Your (Fruits and) Vegetables
• Protocols: Brain Tumor Protocols Include Stereotactic Treatments, Surgery, and Radiation Therapy

Relation Of Vitamin C To Infections, Mark R. Rhea

MD Theses

No abstract provided.