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Articles 1 - 29 of 29
Full-Text Articles in Medicine and Health Sciences
Effect Of Duration And Amplitude Of Direct Current When Lidocaine Is Delivered By Iontophoresis, Susan A. Saliba, Courtney L. Teeter-Heyl, Patrick O. Mckeon, Christopher D. Ingeroll, Ethan N. Saliba
Effect Of Duration And Amplitude Of Direct Current When Lidocaine Is Delivered By Iontophoresis, Susan A. Saliba, Courtney L. Teeter-Heyl, Patrick O. Mckeon, Christopher D. Ingeroll, Ethan N. Saliba
Physical Therapy Faculty Publications
Dosage for the galvanic stimulation for iontophoresis varies. Clinicians manipulate the duration or the amplitude of the current, but it is not known which is more effective. We compared the anesthetic effect of lidocaine HCL (2%) by manipulating the current parameters on 21 healthy volunteers (age: 21.2 ± 4.2, height 170.7 ± 10.2 cm, mass 82.1 ± 19.2 kg). Three conditions were administered in a random order using a Phoresor II® with 2 mL, 2% lidocaine HCL in an iontophoresis electrode. (1) HASD (40 mA*min): High amplitude (4 mA), short duration (10 min); (2) LALD (40 mA.min): …
Liposomal, Ring-Opened Camptothecins With Prolonged, Site-Specific Delivery Of Active Drug To Solid Tumors, Bradley D. Anderson, Vijay Joguparthi, Tiang-Xiang Xiang
Liposomal, Ring-Opened Camptothecins With Prolonged, Site-Specific Delivery Of Active Drug To Solid Tumors, Bradley D. Anderson, Vijay Joguparthi, Tiang-Xiang Xiang
Pharmaceutical Sciences Faculty Patents
A method for preparing a stable dispersion of a camptothecin, camptothecin prodrug, or analog thereof for administration to a patient in need thereof includes preparing a solution of the camptothecin, wherein the solution has a pH which places substantially an entirety of that camptothecin in a carboxylate form. The camptothecin may be a neutral camptothecin. The solution is next loaded into a liposome including at least one lipid, which may be a phospholipid. An intraliposomal pH is maintained which preserves substantially an entirety of the camptothecin in the carboxylate form. The liposomal dispersion is administered to an individual in need …
Removing Aluminum From Solution Using Chelating Compounds And Immobilized Tethered Chelators, Robert A. Yokel, Wesley R. Harris, Christopher D. Spilling, Chang-Guo Zhan
Removing Aluminum From Solution Using Chelating Compounds And Immobilized Tethered Chelators, Robert A. Yokel, Wesley R. Harris, Christopher D. Spilling, Chang-Guo Zhan
Pharmaceutical Sciences Faculty Patents
Methods are described for removing aluminum from a solution using novel di- and tripodal compounds as chelators.
Nanoparticulate Formulations Of Mithramycin Analogs For Enhanced Cytotoxicity, Daniel Scott, Jürgen Rohr, Younsoo Bae
Nanoparticulate Formulations Of Mithramycin Analogs For Enhanced Cytotoxicity, Daniel Scott, Jürgen Rohr, Younsoo Bae
Pharmaceutical Sciences Faculty Publications
Mithramycin (MTM), a natural product of soil bacteria from the Streptomyces genus, displays potent anticancer activity but has been limited clinically by severe side effects and toxicities. Engineering of the MTM biosynthetic pathway has produced the 3-side-chain-modified analogs MTM SK (SK) and MTM SDK (SDK), which have exhibited increased anticancer activity and improved therapeutic index. However, these analogs still suffer from low bioavailability, short plasma retention time, and low tumor accumulation. In an effort to aid with these shortcomings, two nanoparticulate formulations, poly(ethylene glycol)-poly(aspartate hydrazide) self-assembled and cross-linked micelles, were investigated with regard to the ability to load and pH …
Methods And Pharmaceutical Compositions For Decorporation Of Radioactive Compounds, Michael Jay, Russell J. Mumper
Methods And Pharmaceutical Compositions For Decorporation Of Radioactive Compounds, Michael Jay, Russell J. Mumper
Pharmaceutical Sciences Faculty Patents
A composition for removing a radioactive element or compound such as systemic transuranic compounds, from mammals comprises a pharmaceutical carrier and a decorporation agent comprising ester and amide derivatives of DTPA. A method of treating a mammal to remove systemic compounds utilizing the DTPA derivatives is also disclosed.
Degradable Cross-Linked Nanoassemblies As Drug Carriers For Heat Shock Protein 90 Inhibitor 17-N-Allylamino-17-Demethoxy-Geldanamycin, Andrei G. Ponta, Shanjida Akter, Younsoo Bae
Degradable Cross-Linked Nanoassemblies As Drug Carriers For Heat Shock Protein 90 Inhibitor 17-N-Allylamino-17-Demethoxy-Geldanamycin, Andrei G. Ponta, Shanjida Akter, Younsoo Bae
Pharmaceutical Sciences Faculty Publications
Cross-linked nanoassemblies (CNAs) with a degradable core were prepared for sustained release of 17-N-allylamino-17-demethoxygeldanamycin (17-AAG), a potent inhibitor of heat shock protein 90 (HSP90). The particle size of CNAs ranged between 100 and 250 nm, which changed depending on the cross-linking yields and drug entrapment method. CNAs with a 1% cross-linking yield entrapped 17-AAG in aqueous solutions, yet degraded in 3 hrs. CNAs entrapped 5.2 weight% of 17-AAG as the cross-linking yield increased to 10%, retaining more than 80% of particles for 24 hrs. CNAs with drugs entrapped after the cross-linking reactions were 100 nm and remained stable in both …
Histone Deacetylase Inhibitors And Mithramycin A Impact A Similar Neuroprotective Pathway At A Crossroad Between Cancer And Neurodegeneration, Sama F. Sleiman, Jill Berlin, Manuela Basso, Saravanan S. Karuppagounder, Jürgen Rohr, Rajiv R. Ratan
Histone Deacetylase Inhibitors And Mithramycin A Impact A Similar Neuroprotective Pathway At A Crossroad Between Cancer And Neurodegeneration, Sama F. Sleiman, Jill Berlin, Manuela Basso, Saravanan S. Karuppagounder, Jürgen Rohr, Rajiv R. Ratan
Pharmaceutical Sciences Faculty Publications
Mithramycin A (MTM) and histone deacetylase inhibitors (HDACi) are effective therapeutic agents for cancer and neurodegenerative diseases. MTM is a FDA approved aureolic acid-type antibiotic that binds to GC-rich DNA sequences and interferes with Sp1 transcription factor binding to its target sites (GC box). HDACi, on the other hand, modulate the activity of class I and II histone deacetylases. They mediate their protective function, in part, by regulating the acetylation status of histones or transcription factors, including Sp1, and in turn chromatin accessibility to the transcriptional machinery. Because these two classes of structurally and functionally diverse compounds mediate similar therapeutic …
Camptothecin Analogs And Methods Of Preparation Thereof, Dennis P. Curran, David Bom, Thomas Burke
Camptothecin Analogs And Methods Of Preparation Thereof, Dennis P. Curran, David Bom, Thomas Burke
Pharmaceutical Sciences Faculty Patents
To read this abstract, please download this patent.
Berry Preparations And Extracts, Russell J. Mumper, Jin Dai, Vincent S. Gallicchio
Berry Preparations And Extracts, Russell J. Mumper, Jin Dai, Vincent S. Gallicchio
Pharmaceutical Sciences Faculty Patents
A method for deriving compositions having antioxidant and anti-inflammatory activity from berries is provided. The method results in a berry extract compositions having stable anthocyanin content. In one aspect, the method comprises exposing a berry to a solvent composition having a pH of from about 1 to about 4.5, and recovering a berry extract having a stabilized anthocyanin content. The berry may be a blackberry. A cryoprotectant may be added, to further stabilize the anthocyanin content. Compositions comprising the berry extract of the present invention, formulated for oral and/or topical administration, are provided also, including nutritional supplements, capsules, enteric-coated capsules, …
Chelating Compounds And Immobilized Tethered Chelators, Robert A. Yokel, Wesley R. Harris, Christopher D. Spilling, Chang-Guo Zhan
Chelating Compounds And Immobilized Tethered Chelators, Robert A. Yokel, Wesley R. Harris, Christopher D. Spilling, Chang-Guo Zhan
Pharmaceutical Sciences Faculty Patents
Novel di- and tripodal compounds useful as chelators, intermediates for their production and a method for treating an aqueous solution to remove trivalent metal ions are presented.
High-Activity Mutants Of Butyrylcholinesterase For Cocaine Hydrolysis And Method Of Generating The Same, Chang-Guo Zhan, Hoon Cho, Hsin-Hsiung Tai
High-Activity Mutants Of Butyrylcholinesterase For Cocaine Hydrolysis And Method Of Generating The Same, Chang-Guo Zhan, Hoon Cho, Hsin-Hsiung Tai
Pharmaceutical Sciences Faculty Patents
A novel computational method and generation of mutant butyrylcholinesterase for cocaine hydrolysis is provided. The method includes molecular modeling a possible BChE mutant and conducting molecular dynamics simulations and hybrid quantum mechanical/molecular mechanical calculations thereby providing a screening method of possible BChE mutants by predicting which mutant will lead to a more stable transition state for a rate determining step. Site-directed mutagenesis, protein expression, and protein activity is conducted for mutants determined computationally as being good candidates for possible BChE mutants, i.e., ones predicted to have higher catalytic efficiency as compared with wild-type BChE. In addition, mutants A199S/A328W/Y332G, A199S/F227A/A328W/Y332G, A199S/S287G/A328W/Y332G, …
Engineered Nanomaterials: Exposures, Hazards, And Risk Prevention, Robert A. Yokel, Robert C. Macphail
Engineered Nanomaterials: Exposures, Hazards, And Risk Prevention, Robert A. Yokel, Robert C. Macphail
Pharmaceutical Sciences Faculty Publications
Nanotechnology presents the possibility of revolutionizing many aspects of our lives. People in many settings (academic, small and large industrial, and the general public in industrialized nations) are either developing or using engineered nanomaterials (ENMs) or ENM-containing products. However, our understanding of the occupational, health and safety aspects of ENMs is still in its formative stage. A survey of the literature indicates the available information is incomplete, many of the early findings have not been independently verified, and some may have been over-interpreted. This review describes ENMs briefly, their application, the ENM workforce, the major routes of human exposure, some …
High Activity Mutants Of Butyrylcholinesterase For Cocaine Hydrolysis, Chang-Guo Zhan, Fang Zheng, Wenchao Yang
High Activity Mutants Of Butyrylcholinesterase For Cocaine Hydrolysis, Chang-Guo Zhan, Fang Zheng, Wenchao Yang
Pharmaceutical Sciences Faculty Patents
Butyrylcholinesterase (BChE) polypeptide variants of the presently-disclosed subject matter have enhanced catalytic efficiency for (−)-cocaine, as compared to wild-type BChE. Pharmaceutical compositions of the presently-disclosed subject matter include a BChE polypeptide variant having an enhanced catalytic efficiency for (−)-cocaine. A method of the presently-disclosed subject matter for treating a cocaine-induced condition includes administering to an individual an effective amount of a BChE polypeptide variant, as disclosed herein, to lower blood cocaine concentration.
Microneedle-Assisted Transdermal Delivery Of Naltrexone Species: In Vitro Permeation And In Vivo Pharmacokinetic Studies, Mikolaj Milewski
Microneedle-Assisted Transdermal Delivery Of Naltrexone Species: In Vitro Permeation And In Vivo Pharmacokinetic Studies, Mikolaj Milewski
University of Kentucky Doctoral Dissertations
Naltrexone (NTX) is a drug used primarily in the management of alcohol dependence and opioid dependence. Based on several drawbacks associated with the oral and injectable intramuscular dosage forms of naltrexone currently available on the market, there is substantial interest in delivering naltrexone transdermally. Although naltrexone does not permeate skin at the rate sufficient to reach therapeutic plasma concentrations in humans, novel flux enhancement methods such as microneedles help address this challenge. Earlier work in humans has demonstrated that the use of microneedles achieves plasma concentrations in the lower end of expected therapeutic values. Further flux enhancement is desired to …
Atomic Force Microscopy Method Development For Surface Energy Analysis, Clare Aubrey Medendorp
Atomic Force Microscopy Method Development For Surface Energy Analysis, Clare Aubrey Medendorp
University of Kentucky Doctoral Dissertations
The vast majority of pharmaceutical drug products are developed, manufactured, and delivered in the solid-state where the active pharmaceutical ingredient (API) is crystalline. With the potential to exist as polymorphs, salts, hydrates, solvates, and cocrystals, each with their own unique associated physicochemical properties, crystals and their forms directly influence bioavailability and manufacturability of the final drug product. Understanding and controlling the crystalline form of the API throughout the drug development process is absolutely critical. Interfacial properties, such as surface energy, define the interactions between two materials in contact. For crystal growth, surface energy between crystal surfaces and liquid environments not …
Studies Of Solubilization Of Poorly Water-Soluble Drugs During In Vitro Lipolysis Of A Model Lipid-Based Drug Delivery System And In Mixed Micelles, Lin Song
Theses and Dissertations--Pharmacy
Lipid-based drug delivery systems (LBDDSs) are becoming an increasingly popular approach to improve the oral absorption of poorly-water soluble drugs. Several possible mechanisms have been proposed to explain the means by which LBDDSs act in vivo to enhance absorption. The goal of the current dissertation is to provide a better understanding of one proposed mechanism; the capability of lipoidal components in LBDDS formulations to create and maintain a drug in a supersaturated state under simulated GI conditions. Moreover, molecular details of equilibrium solubilization of a drug in a series of model lipid assemblies were examined. The results of these studies …
Isolation And Elucidation Of The Chrysomycin Biosynthetic Gene Cluster And Altering The Glycosylation Patterns Of Tetracenomycins And Mithramycin-Pathway Molecules, Stephen Eric Nybo
Isolation And Elucidation Of The Chrysomycin Biosynthetic Gene Cluster And Altering The Glycosylation Patterns Of Tetracenomycins And Mithramycin-Pathway Molecules, Stephen Eric Nybo
University of Kentucky Doctoral Dissertations
Natural products occupy a central role as the majority of currently used antibiotic and anticancer agents. Among these are type-II polyketide synthase (PKS)-derived molecules, or polyketides, which are produced by many representatives of the genus Streptomyces. Some type-II polyketides, such as the tetracyclines and the anthracycline doxorubicin, are currently employed as therapeutics. However, several polyketide molecules exhibit promising biological activity, but due to toxic side effects or solubility concerns, remain undeveloped as drugs.
Gilvocarcin V (GV) (topoisomerase II inhibitor) has a novel mechanism of action: [2+2] cycloaddition to thymine residues by the 8-vinyl side chain and cross-linking of histone …
The Absence Of Abcd2 Reveals A Novel Role For Peroxisomes In The Protection From Metabolic Syndrome, Jingjing Liu
The Absence Of Abcd2 Reveals A Novel Role For Peroxisomes In The Protection From Metabolic Syndrome, Jingjing Liu
University of Kentucky Doctoral Dissertations
ABCD2 (D2) is a peroxisomal ATP binding cassette (ABC) transporter that is expressed in brain, adrenal and liver. D2 is transcriptionally regulated by key transcriptional factors that control lipid and glucose metabolism. Therefore, we examined its role in adipose tissue. These studies revealed that D2 is highly abundant in adipose tissue and upregulated during adipogenesis. However, D2 deficiency does not affect either adipogenesis or lipid accumulation. An examination of the lipid profile of adipose tissue revealed the accumulation of C20 and C22 fatty acids in D2 deficient (D2‐/‐) mice. When challenged with a diet enriched in erucic acid (C22:1, 10% …
Combinatorial Biosynthetic Derivatization Of The Antitumoral Agent Gilvocarcin V, Micah Douglas Shepherd
Combinatorial Biosynthetic Derivatization Of The Antitumoral Agent Gilvocarcin V, Micah Douglas Shepherd
University of Kentucky Doctoral Dissertations
Gilvocarcin V (GV), the principal product of Streptomyces griseoflavus Gö 3592 and other Streptomyces spp., is the most prominent member of a distinct class of antitumor antibiotics that share a polyketide derived coumarin-based aromatic core. GV and other members of this class including polycarcin V from Streptomyces polyformus, often referred to as gilvocarcin-like aryl C-glycosides, are particularly interesting because of their potent bactericidal, virucidal and antitumor activities at low concentrations while maintaining low in vivo toxicity. Although the precise molecular mechanism of GV bioactivity is unknown, gilvocarcin V has been shown to undergo a photoactivated [2+2] cycloaddition of …
Evaluation Of The Physicochemical Properties And Stability Of Solid Lipid Nanoparticles Designed For The Delivery Of Dexamethasone To Tumors, Melissa Howard
Evaluation Of The Physicochemical Properties And Stability Of Solid Lipid Nanoparticles Designed For The Delivery Of Dexamethasone To Tumors, Melissa Howard
University of Kentucky Doctoral Dissertations
Pre-clinical and clinical trials suggest that pre-treatment with dexamethasone (Dex) may facilitate enhanced uptake of subsequently administered chemotherapeutic agents. To reduce the side effects associated with systemic administration of Dex, solid lipid nanoparticles (SLNs) containing dexamethasone palmitate (Dex-P) were prepared as a means of achieving tumor-targeted drug delivery. These studies were aimed at evaluating the physicochemical properties and both the physiological and storage stability of the SLNs.
SLNs were prepared using nanotemplate engineering technology. Stearyl alcohol (SA) was used as the lipid phase with Brij® 78 and Polysorbate 60 as surfactants and PEG6000 monostearate as a long-chain PEGylating agent. …
Effect Of Azithromycin On Macrophage Phenotype During Pulmonary Infections And Cystic Fibrosis, Theodore James Cory
Effect Of Azithromycin On Macrophage Phenotype During Pulmonary Infections And Cystic Fibrosis, Theodore James Cory
University of Kentucky Doctoral Dissertations
Azithromycin improves clinical outcomes in patients with cystic fibrosis (CF), specifically in patients infected with Pseudomonas aeruginosa. Azithromycin shifts macrophage programming away from a pro-inflammatory classical (M1) phenotype, and towards an anti-inflammatory alternative (M2) phenotype; however, little is known about this mechanism, nor of its impact upon immune response to pulmonary infection. We set out to determine the mechanism by which azithromycin is able to alter macrophage phenotype, and assess the effect of azithromycin induced macrophage polarization on inflammation during pulmonary infections.
Utilizing macrophage cell culture, we found that azithromycin increased IKKβ, a signaling molecule in the NFκB pathway, which …
The Influence Of Antidiabetic Medications On The Development And Progression Of Prostate Cancer, Anna Elizabeth Hitron
The Influence Of Antidiabetic Medications On The Development And Progression Of Prostate Cancer, Anna Elizabeth Hitron
University of Kentucky Master's Theses
The development of prostate tumors has been linked to co-morbid diabetes mellitus (DM) in several studies, potentially through the stimulation of insulin-like growth factor receptor (IGFR). This study evaluates the effect of anti-diabetic medication use on the development of high grade tumors and time to tumor progression compared to non-diabetics. This retrospective, nested case control study identified patients with prostate cancer (PCa) from the Kentucky Medicaid Database. Cases were diagnosed with PCa and DM and using at least one of the following antidiabetic medications; sulfonylureas, insulin, metformin or TZDs. Cases were further stratified on their insulin exposure resulting from therapy. …
Preclinical Evaluation Of Lobeline For The Treatment Of Adhd: Comparison With Psychostimulant Therapies, Yolanda D. Williams
Preclinical Evaluation Of Lobeline For The Treatment Of Adhd: Comparison With Psychostimulant Therapies, Yolanda D. Williams
Theses and Dissertations--Pharmacy
This dissertation work investigated the effect of acute and repeated in vivo administration of lobeline on dopamine transporter (DAT) and vesicular monoamine transporter (VMAT2) function. The effects of lobeline were then compared to the effects of acute and repeated in vivo administration of methylphenidate and amphetamine to determine if lobeline produced similar effects compared to these Attention Deficit Hyperactivity Disorder (ADHD) medications. These medications are considered the first line of pharmacotherapy for ADHD, although there is a growing concern associated with their potential for abuse and other side effects. This merits the need for novel ADHD treatments that have a …
Mechanism And Kinetics Of Covalent Amide-Linked Adduct Formation In Solution And Solid Peptide Formulations, Michael Paul Dehart
Mechanism And Kinetics Of Covalent Amide-Linked Adduct Formation In Solution And Solid Peptide Formulations, Michael Paul Dehart
Theses and Dissertations--Pharmacy
Peptides and proteins are prone to chemical and physical degradation in solutions and solids. One of the most common chemical degradation pathways involves deamidation of asparagine residues through a reactive succinimide intermediate resulting in the formation of aspartyl and isoaspartyl degradation products.
In this work, kinetic studies in aqueous solutions demonstrated that the succinimide intermediate is susceptible to attack by nucleophiles other than water. This may lead to a variety of alternative degradants. In solutions containing high concentrations of ammonia, the succinimide generated in the deamidation of the model peptides Phe-Asn-Gly and Phe-isoAsn-Gly underwent back-reaction with ammonia leading to peptide …
Should Pseudoephedrine (Pse) Be Moved From Behind The Counter To Prescription-Only? An Analysis Of Pse As An Otc Medication And A Precursor For Methamphetamine Production, Jerry Dillon
MPA/MPP/MPFM Capstone Projects
Kentucky State Senator Tom Jensen recently sponsored Senate Bill 45, which would change pseudoephedrine (PSE) from an over-the-counter to a schedule V prescription-only drug. The bill failed, but the debate continues as to whether Kentucky should make PSE, a precursor required to manufacture illicit methamphetamine, a controlled drug that is available by prescription only.
Methamphetamine abuse has been increasing in Kentucky as well as in the rest of the country, despite efforts to control the sale of PSE through federal and state legislation. The Combat Methamphetamine Epidemic Act (CMEA) of 2006 and Kentucky’s initiative to electronically monitor the sales of …
The Incidence Of Hip Fracture Associated With Proton Pump Inhibitor (Ppi) And/Or H2 Receptor Antagonist (H2ra) Use In The Kentucky Medicaid Population, Timothy C. Umeh
The Incidence Of Hip Fracture Associated With Proton Pump Inhibitor (Ppi) And/Or H2 Receptor Antagonist (H2ra) Use In The Kentucky Medicaid Population, Timothy C. Umeh
MPA/MPP/MPFM Capstone Projects
No executive summary.
Towards The Total Synthesis Of The Capuramycin Family Of Natural Products, Jesse M. Jacobsen
Towards The Total Synthesis Of The Capuramycin Family Of Natural Products, Jesse M. Jacobsen
University of Kentucky Master's Theses
Despite over a century of advancement, tuberculosis remains a grave threat to world health. In particular, third world countries continue to struggle with the crushing weight of the disease. Furthermore, the emergence of drug resistance in TB strains poses a significant threat to the first world where incidence and mortality is low. The dwindling efficacy of current drug regimens necessitates research into new small molecules capable of arresting the growth and spread of TB. The capuramycin family of nucleoside antibiotics shows strong potential to become part of this new generation of anti-TB small molecules. Indeed, their ability to inhibit Translocase …
Target Validation Of Uk-101 And Functional Studies Of Β1i, Marie V. Wehenkel
Target Validation Of Uk-101 And Functional Studies Of Β1i, Marie V. Wehenkel
Theses and Dissertations--Pharmacy
β1i is a major catalytic subunit of the immunoproteasome, an alternative form of the constitutive proteasome, and its upregulation has been demonstrated in a variety of disease states including cancer. Our lab has developed a small molecule inhibitor of β1i, dubbed UK-101. While UK-101 causes apoptosis in cancer cell lines, it was not clear whether this apoptotic effect was directly mediated by its irreversible inhibition of β1i. Since off-target effects are major roadblocks for the development of new and effective pharmaceuticals, target validation studies in this system would assist in the further progression of β1i inhibitors towards preclinical trials. Our …
Opioid Codrugs For Pain Management, Ujjwal Chakraborty
Opioid Codrugs For Pain Management, Ujjwal Chakraborty
Theses and Dissertations--Chemistry
Pain is an unpleasant sensory and emotional experience associated with actual or potential tissus damage or described in terms of such damage. Opioids are effective in treating moderate to severe pain, but opioid alone therapy is associated with several adverse effects, development of tolerance and addiction potential. One way to solve these problems is to administer opioids with adjuvant drugs. In this project several opioid molecules were combined with other adjuvant drugs in a single chemical entity to form a codrug.
A series of codrugs were prepared by conjugation of an opioid with S-(-)-nornicotine, ketamine, norketamine and gabapentin. Several …