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Articles 1 - 30 of 166
Full-Text Articles in Chemicals and Drugs
Development And Ex Vivo Characterization Of Enteric Coated Chitosan Beads For Crohn’S Disease Management, Craig Mendonca
Development And Ex Vivo Characterization Of Enteric Coated Chitosan Beads For Crohn’S Disease Management, Craig Mendonca
University Scholar Projects
Drug delivery is the process of transporting a drug to its site of action. It includes controlled delivery, where the drug is released at the tissue in a regulated manner. Additionally, it includes targeted delivery, where the drug is aimed at a specific tissue or region to avoid unwanted side effects (that would occur if the drug were distributed throughout the body). A cellulose acetate phthalate coated chitosan bead was developed as a formulation for controlled and targeted release of dexamethasone to the ilium and colon. This formulation was determined to be effective in delaying dexamethasone release until the formulation …
Coordinated Unmanned Aircraft System (Uas) And Ground-Based Weather Measurements To Predict Lagrangian Coherent Structures (Lcss), Peter J. Nolan, James Pinto, Javier González-Rocha, Anders Jensen, Christina N. Vezzi, Sean C. C. Bailey, Gijs De Boer, Constantin Diehl, Roger Laurence Iii, Craig W. Powers, Hosein Foroutan, Shane D. Ross, David G. Schmale Iii
Coordinated Unmanned Aircraft System (Uas) And Ground-Based Weather Measurements To Predict Lagrangian Coherent Structures (Lcss), Peter J. Nolan, James Pinto, Javier González-Rocha, Anders Jensen, Christina N. Vezzi, Sean C. C. Bailey, Gijs De Boer, Constantin Diehl, Roger Laurence Iii, Craig W. Powers, Hosein Foroutan, Shane D. Ross, David G. Schmale Iii
Mechanical Engineering Faculty Publications
Concentrations of airborne chemical and biological agents from a hazardous release are not spread uniformly. Instead, there are regions of higher concentration, in part due to local atmospheric flow conditions which can attract agents. We equipped a ground station and two rotary-wing unmanned aircraft systems (UASs) with ultrasonic anemometers. Flights reported here were conducted 10 to 15 m above ground level (AGL) at the Leach Airfield in the San Luis Valley, Colorado as part of the Lower Atmospheric Process Studies at Elevation—a Remotely-Piloted Aircraft Team Experiment (LAPSE-RATE) campaign in 2018. The ultrasonic anemometers were used to collect simultaneous measurements of …
Clinical Pharmacology Of Tisagenlecleucel In B-Cell Acute Lymphoblastic Leukemia., Karen Thudium Mueller, Edward Waldron, Stephan A. Grupp, John E. Levine, Theodore W. Laetsch, Michael A. Pulsipher, Michael W. Boyer, Keith August, Jason Hamilton, Rakesh Awasthi, Andrew M. Stein, Denise Sickert, Abhijit Chakraborty, Bruce L. Levine, Carl H. June, Lori Tomassian, Sweta S. Shah, Mimi Leung, Tetiana Taran, Patricia A. Wood, Shannon L. Maude
Clinical Pharmacology Of Tisagenlecleucel In B-Cell Acute Lymphoblastic Leukemia., Karen Thudium Mueller, Edward Waldron, Stephan A. Grupp, John E. Levine, Theodore W. Laetsch, Michael A. Pulsipher, Michael W. Boyer, Keith August, Jason Hamilton, Rakesh Awasthi, Andrew M. Stein, Denise Sickert, Abhijit Chakraborty, Bruce L. Levine, Carl H. June, Lori Tomassian, Sweta S. Shah, Mimi Leung, Tetiana Taran, Patricia A. Wood, Shannon L. Maude
Manuscripts, Articles, Book Chapters and Other Papers
PURPOSE: Tisagenlecleucel is an anti-CD19 chimeric antigen receptor (CAR19) T-cell therapy approved for the treatment of children and young adults with relapsed/refractory (r/r) B-cell acute lymphoblastic leukemia (B-ALL).
PATIENTS AND METHODS: We evaluated the cellular kinetics of tisagenlecleucel, the effect of patient factors, humoral immunogenicity, and manufacturing attributes on its kinetics, and exposure-response analysis for efficacy, safety and pharmacodynamic endpoints in 79 patients across two studies in pediatric B-ALL (ELIANA and ENSIGN).
RESULTS: Using quantitative polymerase chain reaction to quantify levels of tisagenlecleucel transgene, responders (N = 62) had ≈2-fold higher tisagenlecleucel expansion in peripheral blood than nonresponders ( …
December 2018, Randy Curry, Cindy Brooks
December 2018, Randy Curry, Cindy Brooks
RURAL ROCKS
Rural Rocks, the Rural Health Network newsletter by the SWOSU College of Pharmacy
Multifunctional Donepezil Analogues As Cholinesterase And Bace1 Inhibitors, Keith D. Green, Marina Y. Fosso, Sylvie Garneau-Tsodikova
Multifunctional Donepezil Analogues As Cholinesterase And Bace1 Inhibitors, Keith D. Green, Marina Y. Fosso, Sylvie Garneau-Tsodikova
Pharmaceutical Sciences Faculty Publications
A series of 22 donepezil analogues were synthesized through alkylation/benzylation and compared to donepezil and its 6-O-desmethyl adduct. All the compounds were found to be potent inhibitors of both acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), two enzymes responsible for the hydrolysis of the neurotransmitter acetylcholine in Alzheimer’s disease patient brains. Many of them displayed lower inhibitory concentrations of EeAChE (IC50 = 0.016 ± 0.001 µM to 0.23 ± 0.03 µM) and EfBChE (IC50 = 0.11 ± 0.01 µM to 1.3 ± 0.2 µM) than donepezil. One of the better compounds was tested against HsAChE and was …
Adaptation Mechanism And Tolerance Of Rhodopseudomonas Palustris Psb-S Under Pyrazosulfuron-Ethyl Stress, Xiang-Wen Luo, De-Yang Zhang, Teng-Hui Zhu, Xuguo Zhou, Jing Peng, Song-Bai Zhang, Yong Liu
Adaptation Mechanism And Tolerance Of Rhodopseudomonas Palustris Psb-S Under Pyrazosulfuron-Ethyl Stress, Xiang-Wen Luo, De-Yang Zhang, Teng-Hui Zhu, Xuguo Zhou, Jing Peng, Song-Bai Zhang, Yong Liu
Entomology Faculty Publications
Background: Pyrazosulfuron-ethyl is a long lasting herbicide in the agro-ecosystem and its residue is toxic to crops and other non-target organisms. A better understanding of molecular basis in pyrazosulfuron-ethyl tolerant organisms will shed light on the adaptive mechanisms to this herbicide.
Results: Pyrazosulfuron-ethyl inhibited biomass production in Rhodopseudomonas palustris PSB-S, altered cell morphology, suppressed flagella formation, and reduced pigment biosynthesis through significant suppression of carotenoids biosynthesis. A total of 1127 protein spots were detected in the two-dimensional gel electrophoresis. Among them, 72 spots representing 56 different proteins were found to be differently expressed using MALDI-TOF/TOF-MS, including 26 up- and 30 …
Establishing Trust In Hiv/Hcv Research Among People Who Inject Drugs (Pwid): Insights From Empirical Research, Roberto Abadie, Shira Goldenberg, Melissa Welch-Lazoritz, Celia B. Fisher
Establishing Trust In Hiv/Hcv Research Among People Who Inject Drugs (Pwid): Insights From Empirical Research, Roberto Abadie, Shira Goldenberg, Melissa Welch-Lazoritz, Celia B. Fisher
Department of Sociology: Faculty Publications
Background — The establishment of trust between researchers and participants is critical to advance HIV and HCV prevention particularly among people who inject drugs (PWID) and other marginalized populations, yet empirical research on how to establish and maintain trust in the course of community health research is lacking. This paper documents ideas about trust between research participants and researchers amongst a sub-sample of PWID who were enrolled in a large, multi-year community health study of social networks and HIV/HCV risk that was recently conducted in rural Puerto Rico.
Methods — Qualitative research was nested within a multi-year Social Network and …
Evaluation Of A Daptomycin Dosing Protocol Based On Adjusted Body Weight At A Community Hospital, Lorenzo Porras Jr.
Evaluation Of A Daptomycin Dosing Protocol Based On Adjusted Body Weight At A Community Hospital, Lorenzo Porras Jr.
All Publications
No abstract provided.
Retrospective Review Of Alternative Antibiotic Use In Patients With A Reported Penicillin Allergy At A Community Hospital, Rita Chamoun, Monica Tadros, Amy Montes, Heidi Clarke, Radhan Gopalani
Retrospective Review Of Alternative Antibiotic Use In Patients With A Reported Penicillin Allergy At A Community Hospital, Rita Chamoun, Monica Tadros, Amy Montes, Heidi Clarke, Radhan Gopalani
All Publications
No abstract provided.
Retrospective Review Of Patients Treated With Argatroban For Heparin Induced Thrombocytopenia, Jessica Justiz, Jessica Greenwood, Heidi Clarke, Radhan Gopalani
Retrospective Review Of Patients Treated With Argatroban For Heparin Induced Thrombocytopenia, Jessica Justiz, Jessica Greenwood, Heidi Clarke, Radhan Gopalani
All Publications
No abstract provided.
Retrospective Review Of Oral Oncolytic Agent Use Within A Community Hospital, Alyssa Donadio, Moe Shwin, Maria Figueroa, Michelle Lamarque
Retrospective Review Of Oral Oncolytic Agent Use Within A Community Hospital, Alyssa Donadio, Moe Shwin, Maria Figueroa, Michelle Lamarque
All Publications
No abstract provided.
Impact Of A Urinary Tract Infection Treatment Pathway On Antimicrobial Prescribing Within A Community Hospital, Alyssa Donadio, Heidi Clarke, Erika Dittmar
Impact Of A Urinary Tract Infection Treatment Pathway On Antimicrobial Prescribing Within A Community Hospital, Alyssa Donadio, Heidi Clarke, Erika Dittmar
All Publications
No abstract provided.
Hdl In Endocrine Carcinomas: Biomarker, Drug Carrier, And Potential Therapeutic, Emily E. Morin, Xiang-An Li, Anna Schwendeman
Hdl In Endocrine Carcinomas: Biomarker, Drug Carrier, And Potential Therapeutic, Emily E. Morin, Xiang-An Li, Anna Schwendeman
Physiology Faculty Publications
High-density lipoprotein (HDL) have long been studied for their protective role against cardiovascular diseases, however recently relationship between HDL and cancer came into focus. Several epidemiological studies have shown an inverse correlation between HDL-cholesterol (HDL-C) and cancer risk, and some have even implied that HDL-C can be used as a predictive measure for survival prognosis in for specific sub-population of certain types of cancer. HDL itself is an endogenous nanoparticle capable of removing excess cholesterol from the periphery and returning it to the liver for excretion. One of the main receptors for HDL, scavenger receptor type B-I (SR-BI), is highly …
September/October/November 2018, Randy Curry, Cindy Brooks
September/October/November 2018, Randy Curry, Cindy Brooks
RURAL ROCKS
Rural Rocks, the Rural Health Network newsletter by the SWOSU College of Pharmacy
Antagonizing The Corticotropin Releasing Hormone Receptor 1 With Antalarmin Reduces The Progression Of Endometriosis, Annelyn Torres-Reveron, Leslie L. Rivera-Lopez, Idhaliz Flores, Caroline B. Appleyard
Antagonizing The Corticotropin Releasing Hormone Receptor 1 With Antalarmin Reduces The Progression Of Endometriosis, Annelyn Torres-Reveron, Leslie L. Rivera-Lopez, Idhaliz Flores, Caroline B. Appleyard
School of Medicine Publications and Presentations
Endometriosis is a disorder in which endometrial tissue is found outside the uterus causing pain, infertility and stress. Finding effective, non-hormonal and long-term treatments for endometriosis still remains one of the most significant challenges in the field. Corticotropin releasing hormone (CRH) is one of the main signaling peptides within the hypothalamic pituitary adrenal (HPA) axis released in response to stress. CRH can affect nervous and visceral tissues such as the uterus and gut via activation of two types of CRH receptors: CRHR1 and CRHR2. Our aim was to determine if blocking CRHR1 with antalarmin will reduce endometriosis progression. In experiment …
Blocking Drug Activation As A Therapeutic Strategy To Attenuate Acute Toxicity And Physiological Effects Of Heroin, Ting Zhang, Xirong Zheng, Kyungbo Kim, Fang Zheng, Chang-Guo Zhan
Blocking Drug Activation As A Therapeutic Strategy To Attenuate Acute Toxicity And Physiological Effects Of Heroin, Ting Zhang, Xirong Zheng, Kyungbo Kim, Fang Zheng, Chang-Guo Zhan
Molecular Modeling and Biopharmaceutical Center Faculty Publications
Heroin is a growing national crisis in America. There is an increasing frequency of heroin overdoses. All of the currently used therapeutic approaches to treatment of heroin abuse and other opioid drugs of abuse focus on antagonizing a brain receptor (particularly µ-opiate receptors). However, it has been known that the therapeutic use of certain µ-opiate receptor antagonist may actually increase heroin overdose. Once overdosed, heroin addicts may continue to get overdosed again and again until fatal. Here we report our design and validation of a novel therapeutic strategy targeting heroin activation based on our analysis of the chemical transformation and …
Modulation Of Auxin And Cytokinin Responses By Early Steps Of The Phenylpropanoid Pathway, Jasmina Kurepa, Timothy E. Shull, Sumudu S. Karunadasa, Jan A. Smalle
Modulation Of Auxin And Cytokinin Responses By Early Steps Of The Phenylpropanoid Pathway, Jasmina Kurepa, Timothy E. Shull, Sumudu S. Karunadasa, Jan A. Smalle
Plant and Soil Sciences Faculty Publications
Background: The phenylpropanoid pathway is responsible for the synthesis of numerous compounds important for plant growth and responses to the environment. In the first committed step of phenylpropanoid biosynthesis, the enzyme phenylalanine ammonia-lyase (PAL) deaminates L-phenylalanine into trans-cinnamic acid that is then converted into p-coumaric acid by cinnamate-4-hydroxylase (C4H). Recent studies showed that the Kelch repeat F-box (KFB) protein family of ubiquitin ligases control phenylpropanoid biosynthesis by promoting the proteolysis of PAL. However, this ubiquitin ligase family, alternatively named Kiss Me Deadly (KMD), was also implicated in cytokinin signaling as it was shown to promote the degradation of …
A Xenopus Oocyte Model System To Study Action Potentials, Aaron Corbin-Leftwich, Hannah E Small, Helen H Robinson, Carlos A. Villalba-Galea, Linda M Boland
A Xenopus Oocyte Model System To Study Action Potentials, Aaron Corbin-Leftwich, Hannah E Small, Helen H Robinson, Carlos A. Villalba-Galea, Linda M Boland
School of Pharmacy Faculty Articles
Action potentials (APs) are the functional units of fast electrical signaling in excitable cells. The upstroke and downstroke of an AP is generated by the competing and asynchronous action of Na+- and K+-selective voltage-gated conductances. Although a mixture of voltage-gated channels has been long recognized to contribute to the generation and temporal characteristics of the AP, understanding how each of these proteins function and are regulated during electrical signaling remains the subject of intense research. AP properties vary among different cellular types because of the expression diversity, subcellular location, and modulation of ion channels. These complexities, in addition to the …
Multivariate Analysis For The Quantification Of Transdermal Volatile Organic Compounds In Humans By Proton Exchange Membrane Fuel Cell System, Ahmed Hasnain Jalal
Multivariate Analysis For The Quantification Of Transdermal Volatile Organic Compounds In Humans By Proton Exchange Membrane Fuel Cell System, Ahmed Hasnain Jalal
FIU Electronic Theses and Dissertations
In this research, a proton exchange membrane fuel cell (PEMFC) sensor was investigated for specific detection of volatile organic compounds (VOCs) for point-of-care (POC) diagnosis of the physiological conditions of humans. A PEMFC is an electrochemical transducer that converts chemical energy into electrical energy. A Redox reaction takes place at its electrodes whereas the volatile biomolecules (e.g. ethanol) are oxidized at the anode and ambient oxygen is reduced at the cathode. The compounds which were the focus of this investigation were ethanol (C2H5OH) and isoflurane (C3H2ClF5O), but theoretically, the sensor …
Kinetics Of Dextromethorphan-O-Demethylase Activity And Distribution Of Cyp2d In Four Commonly-Used Subcellular Fractions Of Rat Brain, Barent N. Dubois, Farideh Amirrad, Reza Mehvar
Kinetics Of Dextromethorphan-O-Demethylase Activity And Distribution Of Cyp2d In Four Commonly-Used Subcellular Fractions Of Rat Brain, Barent N. Dubois, Farideh Amirrad, Reza Mehvar
Pharmacy Faculty Articles and Research
The purpose of this study was to compare the enzymatic kinetics and distribution of cytochrome P450 2D (CYP2D) among different rat brain subcellular fractions.
Rat brains were used to prepare total membrane, crude mitochondrial, purified mitochondrial, and microsomal fractions, in addition to total homogenate. Michaelis–Menten kinetics of the brain CYP2D activity was estimated based on the conversion of dextromethorphan (DXM) to dextrorphan using UPLC-MS/MS. Protein levels of CYP2D and subcellular markers were determined by Western blot.
Microsomal CYP2D exhibited high affinity and low capacity, compared with the mitochondrial CYP2D that had a much lower (∼50-fold) affinity but a higher (∼six-fold) …
Mycobacterium Tuberculosis Inhibitors: Action And Resistance, Pamela K. Garcia-Moreno
Mycobacterium Tuberculosis Inhibitors: Action And Resistance, Pamela K. Garcia-Moreno
FIU Electronic Theses and Dissertations
Tuberculosis, an infectious disease caused by Mycobacterium tuberculosis, has been a global health problem for years. The emergence of drug resistance in this organism generates the necessity of exploring novel targets and developing new drugs. Topoisomerases are enzymes found in all kingdoms of life responsible for overcoming the topological barriers encountered during essential cellular processes. The genomes of mycobacteria encode only one type IA topoisomerase (MtopI), which has been validated as a novel TB drug target. The goal of this study is to obtain new information on the mechanism and resistance of endogenous and synthetic inhibitors of MtopI.
Rv1495 is …
Duet: A Phase 2 Study Evaluating The Efficacy And Safety Of Sparsentan In Patients With Fsgs., Howard Trachtman, Peter Nelson, Sharon Adler, Kirk N. Campbell, Abanti Chaudhuri, Vimal Kumar Derebail, Giovanni Gambaro, Loreto Gesualdo, Debbie S. Gipson, Jonathan Hogan, Kenneth Lieberman, Brad Marder, Kevin Edward Meyers, Esmat Mustafa, Jai Radhakrishnan, Tarak Srivastava, Miganush Stepanians, Vladimír Tesar, Olga Zhdanova, Radko Komers, Duet Study Group
Duet: A Phase 2 Study Evaluating The Efficacy And Safety Of Sparsentan In Patients With Fsgs., Howard Trachtman, Peter Nelson, Sharon Adler, Kirk N. Campbell, Abanti Chaudhuri, Vimal Kumar Derebail, Giovanni Gambaro, Loreto Gesualdo, Debbie S. Gipson, Jonathan Hogan, Kenneth Lieberman, Brad Marder, Kevin Edward Meyers, Esmat Mustafa, Jai Radhakrishnan, Tarak Srivastava, Miganush Stepanians, Vladimír Tesar, Olga Zhdanova, Radko Komers, Duet Study Group
Manuscripts, Articles, Book Chapters and Other Papers
BACKGROUND: We evaluated and compared the effects of sparsentan, a dual endothelin type A (ETA) and angiotensin II type 1 receptor antagonist, with those of the angiotensin II type 1 receptor antagonist irbesartan in patients with primary FSGS.
METHODS: In this phase 2, randomized, double-blind, active-control Efficacy and Safety of Sparsentan (RE-021), a Dual Endothelin Receptor and Angiotensin Receptor Blocker, in Patients with Focal Segmental Glomerulosclerosis (FSGS): A Randomized, Double-blind, Active-Control, Dose-Escalation Study (DUET), patients aged 8-75 years with biopsy-proven FSGS, eGFR>30 ml/min per 1.73 m2, and urinary protein-to-creatinine ratio (UP/C) ≥1.0 g/g received sparsentan (200, 400, or 800 …
Azithromycin For Early Pseudomonas Infection In Cystic Fibrosis. The Optimize Randomized Trial., Nicole Mayer-Hamblett, George Retsch-Bogart, Margaret Kloster, Frank Accurso, Margaret Rosenfeld, Gary Albers, Philip Black, Perry Brown, Annemarie Cairns, Stephanie D. Davis, Gavin R. Graff, Gwendolyn S. Kerby, David Orenstein, Rachael Buckingham, Bonnie W. Ramsey, Optimize Study Group
Azithromycin For Early Pseudomonas Infection In Cystic Fibrosis. The Optimize Randomized Trial., Nicole Mayer-Hamblett, George Retsch-Bogart, Margaret Kloster, Frank Accurso, Margaret Rosenfeld, Gary Albers, Philip Black, Perry Brown, Annemarie Cairns, Stephanie D. Davis, Gavin R. Graff, Gwendolyn S. Kerby, David Orenstein, Rachael Buckingham, Bonnie W. Ramsey, Optimize Study Group
Manuscripts, Articles, Book Chapters and Other Papers
RATIONALE: New isolation of Pseudomonas aeruginosa (Pa) is generally treated with inhaled antipseudomonal antibiotics such as tobramycin inhalation solution (TIS). A therapeutic approach that complements traditional antimicrobial therapy by reducing the risk of pulmonary exacerbation and inflammation may ultimately prolong the time to Pa recurrence.
OBJECTIVES: To test the hypothesis that the addition of azithromycin to TIS in children with cystic fibrosis and early Pa decreases the risk of pulmonary exacerbation and prolongs the time to Pa recurrence.
METHODS: The OPTIMIZE (Optimizing Treatment for Early Pseudomonas aeruginosa Infection in Cystic Fibrosis) trial was a multicenter, double-blind, randomized, placebo-controlled, 18-month trial …
Nrh:Quinone Oxidoreductase 2 (Nqo2) And Glutaminase (Gls) Both Play A Role In Large Extracellular Vesicles (Lev) Formation In Preclinical Lncap-C4-2b Prostate Cancer Model Of Progressive Metastasis, Thambi Dorai, Ankeeta Shah, Faith Summers, Rajamma Mathew, Jing Huang, Tze-Chen Hsieh, Joseph M. Wu
Nrh:Quinone Oxidoreductase 2 (Nqo2) And Glutaminase (Gls) Both Play A Role In Large Extracellular Vesicles (Lev) Formation In Preclinical Lncap-C4-2b Prostate Cancer Model Of Progressive Metastasis, Thambi Dorai, Ankeeta Shah, Faith Summers, Rajamma Mathew, Jing Huang, Tze-Chen Hsieh, Joseph M. Wu
NYMC Faculty Publications
In the course of studies aimed at the role of oxidative stress in the development of metastatic potential in the LNCaP-C4-2B prostate cancer progression model system, we found a relative decrease in the level of expression of the cytoplasmic nicotinamide riboside: quinone oxidoreductase (NQO2) and an increase in the oxidative stress in C4-2B cells compared to that in LNCaP or its derivatives C4 and C4-2. It was also found that C4-2B cells specifically shed large extracellular vesicles (LEVs) suggesting that these LEVs and their cargo could participate in the establishment of the osseous metastases. The level of expression of caveolin-1 …
Glimepiride Administered In Chow Reversibly Impairs Glucose Tolerance In Mice, Dana M. Niedowicz, Sabire Özcan, Peter T. Nelson
Glimepiride Administered In Chow Reversibly Impairs Glucose Tolerance In Mice, Dana M. Niedowicz, Sabire Özcan, Peter T. Nelson
Sanders-Brown Center on Aging Faculty Publications
Sulfonylureas are a class of antidiabetes medications prescribed to millions of individuals worldwide. Rodents have been used extensively to study sulfonylureas in the laboratory. Here, we report the results of studies treating mice with a sulfonylurea (glimepiride) in order to understand how the drug affects glucose homeostasis and tolerance. We tested the effect of glimepiride on fasting blood glucose, glucose tolerance, and insulin secretion, using glimepiride sourced from a local pharmacy. We also examined the effect on glucagon, gluconeogenesis, and insulin sensitivity. Unexpectedly, glimepiride exposure in mice was associated with fasting hyperglycemia, glucose intolerance, and decreased insulin. There was no …
Synthesis And Antiproliferative Activities Of Doxorubicin Thiol Conjugates And Doxorubicin-Ss-Cyclic Peptide, Shaban Darwish, Neda Sadeghiani, Shirley Fong, Saghar Mozaffari, Parinaz Hamidi, Thimanthi Withana, Sun Yang, Rakesh Kumar Tiwari, Keykavous Parang
Synthesis And Antiproliferative Activities Of Doxorubicin Thiol Conjugates And Doxorubicin-Ss-Cyclic Peptide, Shaban Darwish, Neda Sadeghiani, Shirley Fong, Saghar Mozaffari, Parinaz Hamidi, Thimanthi Withana, Sun Yang, Rakesh Kumar Tiwari, Keykavous Parang
Pharmacy Faculty Articles and Research
Myocardial toxicity and drug resistance caused by drug efflux are major limitations of doxorubicin (Dox)-based chemotherapy. Dox structure modification could be used to develop conjugates with an improved biological profile, such as antiproliferative activity and higher cellular retention. Thus, Dox thiol conjugates, Dox thiol (Dox-SH), thiol-reactive Dox-SS-pyridine (SS = disulfide), and a Dox-SS-cell-penetrating cyclic peptide, Dox-SS-[C(WR)4K], were synthesized. Dox was reacted with Traut's reagent to generate Dox-SH. The thiol group was activated by the reaction with dithiodipyridine to afford the corresponding Dox-SS-Pyridine (Dox-SS-Pyr). A cyclic cell-penetrating peptide containing a cysteine residue [C(WR)4K] was prepared using Fmoc solid-phase strategy. Dox-SS-Py was …
Design, Synthesis, And Evaluation Of Amphiphilic Cyclic And Linear Peptides Composed Of Hydrophobic And Positively-Charged Amino Acids As Antibacterial Agents, Neda Riahifard, Saghar Mozaffari, Taibah Aldakhil, Francisco Nunez, Qamar Alshammari, Saud Alshammari, Jason Yamaki, Keykavous Parang, Rakesh Kumar Tiwari
Design, Synthesis, And Evaluation Of Amphiphilic Cyclic And Linear Peptides Composed Of Hydrophobic And Positively-Charged Amino Acids As Antibacterial Agents, Neda Riahifard, Saghar Mozaffari, Taibah Aldakhil, Francisco Nunez, Qamar Alshammari, Saud Alshammari, Jason Yamaki, Keykavous Parang, Rakesh Kumar Tiwari
Pharmacy Faculty Articles and Research
Antimicrobial peptides (AMPs) contain amphipathic structures and are derived from natural resources. AMPs have been found to be effective in treating the infections caused by antibiotic-resistant bacteria (ARB), and thus, are potential lead compounds against ARB. AMPs’ physicochemical properties, such as cationic nature, amphiphilicity, and their size, will provide the opportunity to interact with membrane bilayers leading to damage and death of microorganisms. Herein, AMP analogs of [R4W4] were designed and synthesized by changing the hydrophobicity and cationic nature of the lead compound with other amino acids to provide insights into a structure-activity relationship against selected …
Using Drosophila Behavioral Assays To Characterize Terebrid Venompeptide Bioactivity, Anders Eriksson, Prachi Anand, Juliette Gorson, Corina Grijuc, Elina Hadelia, James C. Stewart, Mandë Holford, Adam Claridge-Chang
Using Drosophila Behavioral Assays To Characterize Terebrid Venompeptide Bioactivity, Anders Eriksson, Prachi Anand, Juliette Gorson, Corina Grijuc, Elina Hadelia, James C. Stewart, Mandë Holford, Adam Claridge-Chang
Publications and Research
The number of newly discovered peptides from the transcriptomes and proteomes of animal venom arsenals is rapidly increasing, resulting in an abundance of uncharacterized peptides. There is a pressing need for a systematic, cost effective, and scalable approach to identify physiological effects of venom peptides. To address this discovery-to-function gap, we developed a sequence driven:activity-based hybrid approach for screening venom peptides that is amenable to large-venom peptide libraries with minimal amounts of peptide. Using this approach, we characterized the physiological and behavioral phenotypes of two peptides from the venom of predatory terebrid marine snails, teretoxins Tv1 from Terebra variegata and …
In Vitro And Ex-Vivo Evaluation Of Topical Formulations Designed To Minimize Transdermal Absorption Of Vitamin K1, Ramina Nabiee, Barent Dubois, Laura Green, Ajay Sharma, Siu Fun Wong, Hamidreza Montazeri Aliabadi
In Vitro And Ex-Vivo Evaluation Of Topical Formulations Designed To Minimize Transdermal Absorption Of Vitamin K1, Ramina Nabiee, Barent Dubois, Laura Green, Ajay Sharma, Siu Fun Wong, Hamidreza Montazeri Aliabadi
Pharmacy Faculty Articles and Research
Topical application of Vitamin K1 has been demonstrated to effectively treat papulopustular skin rash, a serious and frequently encountered side effect of Epidermal Growth Factor Inhibitors (EGFRIs). Systemic absorption of vitamin K1 from skin and the resultant consequence of antagonizing EGFRIs anticancer effects jeopardizes the clinical acceptability of this rather effective treatment. The purpose of the present study was to rationally formulate and evaluate the release rate and transdermal absorption of a wide range of Vitamin K1 dermal preparations with a variety of physiochemical properties. A library of 33 formulations with were compounded and tested for Vitamin K1 permeation using …
Correcting Glucose-6-Phosphate Dehydrogenase Deficiency With A Small-Molecule Activator, Sunhee Hwang, Karen Mruk, Simin Rahighi, Andrew G. Raub, Che-Hong Chen, Lisa E. Dorn, Naoki Horikoshi, Soichi Wakatsuki, James K. Chen, Daria Mochly-Rosen
Correcting Glucose-6-Phosphate Dehydrogenase Deficiency With A Small-Molecule Activator, Sunhee Hwang, Karen Mruk, Simin Rahighi, Andrew G. Raub, Che-Hong Chen, Lisa E. Dorn, Naoki Horikoshi, Soichi Wakatsuki, James K. Chen, Daria Mochly-Rosen
Pharmacy Faculty Articles and Research
Glucose-6-phosphate dehydrogenase (G6PD) deficiency, one of the most common human genetic enzymopathies, is caused by over 160 different point mutations and contributes to the severity of many acute and chronic diseases associated with oxidative stress, including hemolytic anemia and bilirubin-induced neurological damage particularly in newborns. As no medications are available to treat G6PD deficiency, here we seek to identify a small molecule that corrects it. Crystallographic study and mutagenesis analysis identify the structural and functional defect of one common mutant (Canton, R459L). Using high-throughput screening, we subsequently identify AG1, a small molecule that increases the activity of the wild-type, the …