Katherine M. Howard

ORCID: 0000-0002-9008-4310
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About
Contact & Profiles
Research Areas
  • MicroRNA in disease regulation
  • Oral microbiology and periodontitis research
  • Streptococcal Infections and Treatments
  • Cancer-related molecular mechanisms research
  • Oral Health Pathology and Treatment
  • Extracellular vesicles in disease
  • Circular RNAs in diseases
  • Immune Response and Inflammation
  • Dental Health and Care Utilization
  • RNA Interference and Gene Delivery
  • HIV/AIDS oral health manifestations
  • RNA modifications and cancer
  • Asthma and respiratory diseases
  • Mesenchymal stem cell research
  • Salivary Gland Disorders and Functions
  • Antiplatelet Therapy and Cardiovascular Diseases
  • Wildlife Ecology and Conservation
  • Drug Transport and Resistance Mechanisms
  • Fish Ecology and Management Studies
  • Legionella and Acanthamoeba research
  • BRCA gene mutations in cancer
  • Infective Endocarditis Diagnosis and Management
  • Rabies epidemiology and control
  • Genomic variations and chromosomal abnormalities
  • Chemotherapy-induced organ toxicity mitigation

University of Nevada, Las Vegas
2015-2025

Natera (United States)
2023-2024

Alaska Department of Fish and Game
2019-2024

University of Nebraska–Lincoln
2014-2023

NSW Department of Planning and Environment
2021

Parks and Wildlife Service
2020

National Parks and Wildlife Service
2020

The University of Texas Health Science Center at San Antonio
1993-2009

The University of Texas at Austin
2003

University of California, San Diego
1999

To examine the relationship between plasma glucose concentration (PG) and pathways of hepatic production (HGP), five groups conscious rats were studied after a 6-h fast: (a) control (PG = 8.0 +/- 0.2 mM); (b) 7.9 mM) with somatostatin insulin replaced at basal level; (c) 18.1 somatostatin, level, infused to acutely raise by 10 mM; (d) 18.0 infusions reproduce metabolic conditions diabetic rats, i.e., hyperglycemia moderate hypoinsulinemia; (e) 18.4 2.3 mM). All received an infusion...

10.1172/jci116681 article EN Journal of Clinical Investigation 1993-09-01

MicroRNAs (miRs, miRNAs) play central roles in gene regulation. Previously, we reported that miRNAs from pasteurized, store-bought bovine milk have biological activity humans. Here, assessed the effects of processing, storage, somatic cell content, and handling by consumers on degradation milk; also quantified dairy products. Pasteurization homogenization caused a 63% loss miR-200c, whereas 67% observed for miR-29b was statistically significant only skim milk. Effects cold storage content...

10.1021/jf505526w article EN publisher-specific-oa Journal of Agricultural and Food Chemistry 2014-12-25

ABSTRACT Genes of the ventrolateral group in Drosophila are dedicated to developmental regulation Egfr signaling multiple processes including wing vein development. Among these genes, encodes EGF-Receptor, spitz (spi) and (vn) encode EGF-related ligands, rhomboid (rho) Star (S) membrane proteins. In this study, we show that rho-mediated hyperactivation EGFR/MAPK pathway is required for formation throughout late larval early pupal Consistent with observation, rho activity necessary sufficient...

10.1242/dev.126.12.2663 article EN Development 1999-06-15

Recent precipitous declines in western Alaska chum salmon Oncorhynchus keta returns followed unprecedented warming the northern Bering Sea ecosystem. To better understand role of anomalous events on early marine ecology juvenile Sea, we utilized time-series observations over a 17 yr period (2003-2019) sea surface temperature (SST) and size (length weight), diet, energy density, relative abundance. Particular attention was paid to more recent (2014-2019) years which there loss ice Being...

10.3354/meps14491 article EN cc-by Marine Ecology Progress Series 2024-01-11

Platinum concentrations were determined in autopsy tumor samples obtained from 27 patients who had received cisplatin 40–1,029 mg/m2 0 to 240 days antemortem. Liver metastases significantly higher platinum than did tumors other sites (p < 0.005). liver similar normal liver. gliomas and brain extrahepatic tumors. concentration generally decreased with increasing distance into tumor. By multiple stepwise linear regression analysis, the factors that independently most closely associated time...

10.1097/00000421-198804000-00013 article EN American Journal of Clinical Oncology 1988-04-01

Autopsy tissues were obtained from 30 patients who had received cisplatin antemortem; the assayed for platinum by flameless atomic absorption spectrometry. Patients with antemortem evidence of renal toxicity higher cortical concentrations than did without kidney damage. In addition, nephrotoxicity more likely to have that medullary concentrations. Overall, two variables most closely associated an increase in serum creatinine treatment concentration (P less .02) and cumulative dose .05)....

10.1200/jco.1985.3.9.1251 article EN Journal of Clinical Oncology 1985-09-01

Objective: Extracellular vesicles derived from oral cancer cells, which include Exosomes and Oncosomes, are membranous secreted into the surrounding extracellular environment. These can regulate modulate squamous cell carcinoma (OSCC) progression through horizontal transfer of bioactive molecules including proteins, lipids microRNA (miRNA). The primary objective this study was to examine potential isolate evaluate (including exosomes) various lines explore differences in miRNA content....

10.3390/dj7020048 article EN cc-by Dentistry Journal 2019-05-01

Recent advances have suggested that non-coding miRNAs (such as miR-21, miR-27, miR-145, miR-155, miR-365, miR-375 and miR-494) may be involved in multiple aspects of oral cancer chemotherapeutic responsiveness. This study evaluated whether these specific are correlated with responsiveness to chemotherapies, including Paclitaxel, Cisplatin Fluorouracil (5FU). Commercially available well-characterized squamous cell carcinoma lines (SCC4, SCC9, SCC15, SCC25 CAL27) revealed differing resistance...

10.3390/ijms24021244 article EN International Journal of Molecular Sciences 2023-01-08

The aging populations in many countries have developed chronic illnesses and diseases, including neurologic conditions such as Parkinson's Azheimer's diseases. Many new lines of research treatment are focusing on the potential for regeneration using mesenchymal stem cells (MSCs) rapidly growing field regenerative medicine. This may include dental pulp (DPSCs), which recently been demonstrated to produce neuronal precursors. Based upon this evidence, primary aim study was determine if growth...

10.3390/biomedicines11020255 article EN cc-by Biomedicines 2023-01-18

New evidence has suggested that non-coding microRNAs play a significant role in mediating and modulating chemotherapy resistance, particularly among oral cancers. One recent study found the upregulation of miR-145 downregulation miR-155 strongly correlated with limited resistance to Cisplatin, 5-Fluorouracil, Paclitaxel, although mechanism(s) responsible for these observations remain unidentified. Using commercially available cell lines squamous carcinoma, RNA was isolated, converted into...

10.3390/ijms25042167 article EN International Journal of Molecular Sciences 2024-02-10

Introduction: miR-365 is a non-coding microRNA that regulates transcription and has been demonstrated to promote oncogenesis metastasis in some cancers, while suppressing these effects others. Many microRNAs are produced then exported extracellularly exosomes, which small extracellular vesicles ranging from 30 100 nm found eukaryotic fluids facilitate many cellular functions. Exosomes by cell types, including oral cancer cells—although no study date evaluated exosomes or vesicles. Based on...

10.3390/ijms21155317 article EN International Journal of Molecular Sciences 2020-07-27

To gain insight into the role of insulin-like growth factors (IGFs) in regulating lung development, we have used situ hybridization histochemistry (ISHH) to examine ontogeny and sites expression IGF-I IGF-II, IGF binding proteins (IGFBP-1 IGFBP-6), cell surface receptors fetal rat from 15 21 days gestation. Both IGF-II mRNAs were expressed throughout developmental period studied with little change apparent abundance. mRNA localized mesenchymal cells, especially those surrounding airway...

10.1165/ajrcmb.14.1.8534487 article EN American Journal of Respiratory Cell and Molecular Biology 1996-01-01

Staphylococcus aureus infections are known triggers for skin inflammation and can modulate immune responses. The present studies used model systems consisting of platelet-activating factor receptor-positive -negative (PAF-R-positive -negative) cells PAF-R-deficient mice to demonstrate that staphylococcal lipoteichoic acid (LTA), a constituent Gram-positive bacteria cell walls, acts as PAF-R agonist. We show LTA stimulates an immediate intracellular Ca2+ flux only in PAF-R-positive cells....

10.1172/jci25429 article EN Journal of Clinical Investigation 2005-09-22

New evidence has suggested that oral and gut microflora may have significant impacts on the predisposition, development, stability of obesity in adults over time-although less is known about this phenomenon children. Compared with healthy-weight controls, overweight obese adult patients are now to harbor specific pathogens, such as

10.3390/pathogens13040338 article EN cc-by Pathogens 2024-04-19

Many health benefits are associated with Vitamin D (VitD), although deficiency is poor outcomes and the increased risk of cancer development. For example, many tissue-specific enzymes involved in VitD metabolism, mutations or deletions within receptor (VDR) genes known to increase by altering their functions bioavailability, less about these phenomena oral cancers. Using well-characterized, commercially available cell lines (OKF4, HGF-1, SCC4, SCC9, SCC15, SCC25, CAL27), mRNA expression P450...

10.3390/targets3010006 article EN Targets 2025-02-08

The topic of curriculum reform has received an enormous amount attention in the field dental education. While recently established schools benefit from evolution change and innovation constructing their new curricula, these advantages can become lost if is not assessed to ascertain degree which accurately reflects initial intended goals. purpose this educational research project was evaluate a school determine extent vertical horizontal integration originally intended. After faculty retreat...

10.1002/j.0022-0337.2009.73.8.tb04785.x article EN Journal of Dental Education 2009-08-01

The objective of this study was to measure the validity and reliability a multifactorial Risk Factor Model developed for use in predicting future caries risk Nevada adolescents public health setting. This examined retrospective data from an oral surveillance initiative that screened over 51,000 students 13-18 years age, attending public/private schools across six academic (2002/2003-2007/2008). included ten demographic variables: exposure fluoridation municipal water supply, environmental...

10.1186/1472-6831-11-18 article EN cc-by BMC Oral Health 2011-05-20

In recent studies, periodontal health has been linked to being overweight and/or obese. Among common oral bacteria, Selenomonas noxia implicated in converting disease, and species have also found gastric ulcers. The objective of this study was develop validate a quantitative polymerase chain reaction (qPCR) assay for the specific rapid detection S. noxia.Two oligonucleotide primer pairs one probe were designed tested determine optimal amplification signal with three strains noxia. PCR...

10.1186/s12903-015-0071-1 article EN cc-by BMC Oral Health 2015-08-13

Platelet-activating factor (PAF) is a potent proinflammatory phospholipid mediator that causes hypotension, increases vascular permeability, and has been implicated in anaphylaxis, septic shock several other inflammatory responses. PAF hydrolyzed inactivated by the enzyme PAF-acetylhydrolase. In intact rat, mesenteric vein infusion of lipopolysaccharide (LPS) served as an acute, liver-focused model endotoxemia. Plasma PAF-acetylhydrolase activity increased 2-fold 24 h following LPS...

10.1074/jbc.272.44.27543 article EN cc-by Journal of Biological Chemistry 1997-10-01

Activation of endothelin (ET) receptors in the liver causes vasoconstriction, glucose production, and lipid peptide mediator synthesis. In intact rat, a bolus infusion endotoxin into mesenteric vein served as an acute exposure model endotoxemia. response to this challenge, ninefold increase hepatic ET-1 mRNA occurred within 3 h. The plasma level immunoreactive (irET-1) increased correspondingly by 8.5-fold 6 levels endothelial cells (EC) isolated from livers endotoxin-treated rats at various...

10.1152/ajpgi.1997.272.3.g605 article EN AJP Gastrointestinal and Liver Physiology 1997-03-01

Human papillomaviruses (HPV) are oncogenic and mainly associated with cervical cancers. Recent evidence has demonstrated HPV infection in other tissues, including oral epithelia mucosa. Although a recent pilot study provided new information about status healthy adults from Nevada, no was obtained prevalence among children or teenagers, therefore, the goal of this is to provide more detailed high-risk teenagers Nevada.This retrospective utilized previously collected saliva samples, pediatric...

10.1186/1472-6831-12-43 article EN cc-by BMC Oral Health 2012-10-22
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