Pharmacy and Pharmaceutical Sciences Commons^™

Facilitating The Everyday Steward: Impact Of Mandatory Antimicrobial Indication/Duration And A 48 Hour Time Out, Ann L. Wirtz, Alaina N. Burns, Brian R. Lee, Tammy Frank, Laura Fitzmaurice, Richard Ogden, Brian O'Neal, Jennifer Goldman

Posters

Introduction: Required indication, duration, and a 48-hour antimicrobial timeout are an integral part of antimicrobial stewardship standards; however, limited data are available to demonstrate an effect on antimicrobial utilization and antimicrobial stewardship practice. Therefore, we evaluated the impact of mandatory declared indication/duration along with a pharmacy-driven 48-hour timeout on antimicrobial utilization and antimicrobial stewardship interventions.

Methods: We performed a retrospective evaluation of ASP interventions and antimicrobial use following implementation of mandatory antimicrobial indication/duration at the point of computerized physician order entry (CPOE). A pharmacist-driven 48-hour antimicrobial timeout was introduced on the same date. This study was conducted at Children’s Mercy …

Matrix Metalloproteinase-Mediated Blood-Brain Barrier Dysfunction In Epilepsy, Ralf G. Rempe, Anika M. S. Hartz, Emma L. B. Soldner, Brent S. Sokola, Satya R. Alluri, Erin L. Abner, Richard J. Kryscio, Anton Pekcec, Juli Schlichtiger, Björn Bauer

Pharmaceutical Sciences Faculty Publications

The blood-brain barrier is dysfunctional in epilepsy, thereby contributing to seizure genesis and resistance to antiseizure drugs. Previously, several groups reported that seizures increase brain glutamate levels, which leads to barrier dysfunction. One critical component of barrier dysfunction is brain capillary leakage. Based on our preliminary data, we hypothesized that glutamate released during seizures mediates an increase in matrix-metalloproteinase (MMP) expression and activity levels, thereby contributing to barrier leakage. To test this hypothesis, we exposed isolated brain capillaries from male Sprague Dawley rats to glutamate ex vivo and used an in vivo/ex vivo approach of isolated brain capillaries …

A Time Course Study Of Rotavirus-Infected Intestinal Cells Treated With Stilbenoids And The Regulation Of Apoptosis, Rebecca D. Parr, Caleb M. Witcher, Rebekah Napier-Jameson, Hannah L. Wilson, Stormey Wisdom, Macie N. Mattila, Essence B. Strange, Josephine Taylor, Beatrice Clack, Fabricio Medina-Bolivar, Judith M. Ball

Faculty Publications

This is a time course study of virus –host interactions that are modified with the addition of two small natural products. They appear to effect virus replication and the host response to the infection.

Earlier Identification Of Medications Needing Prior Authorization Can Reduce Delays In Hospital Discharge, Thomas Lew, Laressa Bethishou, Lisa Shieh

Pharmacy Faculty Articles and Research

"Based on our experience, there are no studies that evaluate delays due to discharge medications needing to undergo the PA process. Thus, in our pilot study, we both aim to define the scope of this problem by surveying resident physicians as well as provide an intervention to identify earlier medications that will need to undergo a PA process. Pharmacy-led interventions in processing PAs have resulted in a statistically significant benefit in improving time to PA approval, fill, and pickup.5 Therefore, in our intervention, we utilize a specialized 'transitions of care' (TOC) pharmacist to analyze the medications of patients who are …

Physiologically Based Pharmacokinetic Modeling Of Nanoceria Systemic Distribution In Rats Suggests Dose- And Route-Dependent Biokinetics, Ulrika Carlander, Tshepo Paulsen Moto, Anteneh Assefa Desalegn, Robert A. Yokel, Gunnar Johanson

Pharmaceutical Sciences Faculty Publications

Background: Cerium dioxide nanoparticles (nanoceria) are increasingly being used in a variety of products as catalysts, coatings, and polishing agents. Furthermore, their antioxidant properties make nanoceria potential candidates for biomedical applications. To predict and avoid toxicity, information about their biokinetics is essential. A useful tool to explore such associations between exposure and internal target dose is physiologically based pharmacokinetic (PBPK) modeling. The aim of this study was to test the appropriateness of our previously published PBPK model developed for intravenous (IV) administration when applied to various sizes of nanoceria and to exposure routes relevant for humans.

Methods: Experimental biokinetic data …

Pharmacist-Patient Communication Techniques, Kanya Shah

Senior Honors Projects

Objective: To examine available literature on patient-provider communication directed specifically to pharmacists and create a succinct guide of communication techniques.

Methods: Two systematic searches were conducted on PubMed, EMBASE, APhA Library, Access Pharmacy, Communication Abstracts (EBSCO), and ComDisDome (Proquest). The first search quantified the literature available relating to communication techniques for non-pharmacist healthcare providers, such as physicians and nurses. The second search examined the information available on communication techniques directed to pharmacists and pharmacy practice. After conducting these general searches, the results were narrowed to clinical trials and review articles. Since the focus of this project was patient …

The Relationship Between Prior Experiences In Mathematics And Pharmacy School Success, Kelly M. Conn, Christine R. Birnie, David Mccaffrey, Jack Brown

Pharmacy Faculty/Staff Publications

Objective. To assess students’ pre-pharmacy math experiences, confidence in math ability, and relationship between experiences, confidence, and grades in math-based pharmacy courses.

Methods. A cross-sectional survey of first year to third year pharmacy students was conducted. Students reported type of pre-pharmacy math courses taken, when they were taken [high school (HS) vs. college] and year of HS and college graduation. Students rated their confidence in math ability using the previously validated 11-item Fogerty Math Confidence Scale (Cronbach alpha=0.92). Math grade point average (GPA), Pharmacy College Admission Test quantitative (PCAT quant) scores, and grades (calculations and kinetics) were obtained from transcripts …

Evaluation Of Physician Prescribing Patterns For Antibiotics In The Treatment Of Nonnecrotizing Skin And Soft Tissue Infections, Michael Ezebuenyi, Fatima Brakta, Ifeanyi Onor,, Daniel Sarpong, Kendrea Bryant-Burks, Julio Figueroa Ii

Faculty and Staff Publications

Purpose: Skin and soft tissue infections (SSTIs) cause about 15 million cases of infection that result in more than 869,000 annual hospitalizations in the United States. Cellulitis accounted for 63% of all patients hospitalized with SSTIs between 2009 and 2011. The primary objective of this study was to evaluate physician adherence rates to evidence-based practice guidelines. Secondary objectives included evaluating antibiotic selection preferences and duration of therapy. The goal of the project was to generate data to inform the development of a hospital-based protocol for nonnecrotizing SSTI treatment. Methods: This study was a single-center, retrospective, electronic chart review of patients …

Synthesis And Cytotoxicity Of Azaheterocyclic Compounds, Keyur M. Pandya

Theses and Dissertations

Multicomponent coupling reactions (MCRs) have been known for a long time and one such reaction that utilizes isocyanides is Passerini reaction. It is a powerful tool to synthesize libraries of different compounds. Azaheterocyclic compounds play an important role in medicinal chemistry. Motifs such as imidazoles, piperazines, pyrazoles, pyridines, triazoles, etc. are routinely observed in several compounds of pharmacological interest. Several natural products also contain these motifs in them. We have undertaken a library synthesis of heterocyclic molecules driven by our group's long-standing interest of synthesizing medicinally relevant small molecules employing green chemistry techniques.

This thesis details our efforts on the …

Effects Of Platelet-Activating Factor On Brain Microvascular Endothelial Cells., Eugen Brailoiu, Christine L. Barlow, Servio H. Ramirez, Mary E. Abood, G. Cristina Brailoiu

College of Pharmacy Faculty Papers

Platelet-activating factor (PAF) is a potent phospholipid mediator that exerts various pathophysiological effects by interacting with a G protein-coupled receptor. PAF has been reported to increase the permeability of the blood-brain barrier (BBB) via incompletely characterized mechanisms. We investigated the effect of PAF on rat brain microvascular endothelial cells (RBMVEC), a critical component of the BBB. PAF produced a dose-dependent increase in cytosolic Ca²⁺ concentration; the effect was prevented by the PAF receptor antagonist, WEB2086. The effect of PAF on cytosolic Ca²⁺ was abolished in Ca²⁺-free saline or in the presence of L-type voltage-gated Ca^{2+ …}

Novel Determinants That Influence Azole Susceptibility In Candida Glabrata And Candida Albicans, Sarah Garland Whaley

Theses and Dissertations (ETD)

Despite the scientific and medical communities’ best efforts, the incidence of fungal infections in susceptible populations continues to rise. The most common cause of these opportunistic fungal infections is Candida. In fact, Candida is the fourth most common pathogen associated with nosocomial blood stream infections. Reported mortality rates for patients with candidemia vary, but have not decreased in the past fifteen years and are reported to be as high as 50%. Candida glabrata, second only to Candida albicans among Candida infections, expresses high rates of resistance to treatment with arguably the best class of currently available antifungals - …

Rheological Studies Of Injectable Thermoresponsive Biodegradable Hydrogels And Porcine Ocular Tissues, Chandana Reddy Damera

Theses and Dissertations (ETD)

This research has evaluated the rheological properties of two types of materials which include (i) semi-synthetic polymer-based injectable hydrogels [P(NIPAAm-co-DEX-Lactate HEMA) and P(NIPAAm-co-HA-AEMA)], and (ii) biological tissues (porcine ocular tissues).

A series of thermoresponsive and biodegradable in situ hydrogel based on N-isopropyacrylamide (NIPAAm) monomer and hydrolytically degradable oligolactate Dextran-lactate-HEMA or Hyaluronic acid (HA)-AEMA macromer were investigated as encapsulation matrices (scaffolds) for DPSCs/ADSCs and assess their applicability in dental/retinal tissue engineering. The rheological properties of the hydrogels were strongly dependent on the reaction conditions and composition of the hydrogels. Both the hydrogels exhibited linear viscoelasticity, and the values of storage moludus …

Somatic Mutation Detection In Leukemia-Derived Circulating Dna: Utility In Monitoring Clonal Dynamics And Disease Response In Pediatric Acute Lymphoblastic Leukemia, Sarah Hisham Abdelaziz Youssef

Theses and Dissertations (ETD)

Despite the improved outcome associated with current treatment strategies ofpediatric acute lymphoblastic leukemia (ALL), relapse still represents a major challenge. Pediatric ALL demonstrates branched evolution in response to selective pressure exerted by therapy; relapse founder clones emerge from pre-leukemic clones or minor subclones present at diagnosis. It is hence crucial to develop biomarkers capable of tracking subclones throughout therapy. Current practices for monitoring disease response in leukemia rely on the analysis of BM biopsy sample at specific time points throughout therapy. Not only the invasiveness of the BM biopsy hinders the sequential sampling, but also, the currently implied techniques are …

Characterization Of The Hepatotoxicity Of Rifampicin And Isoniazid, Christopher T. Brewer

Theses and Dissertations (ETD)

In a mouse model, rifampicin and isoniazid combination treatment results in cholestatic liver injury that is associated with an increase of protoporphyrin ix (PPIX), the penultimate heme precursor. Excess PPIX is believed to bind to bile acids, precipitate in bile canaliculi, and form bile plugs leading to cholestasis fol owed by liver injury. Both ferrochelatase (FECH/Fech) and aminolevulinic acid synthase 1 (ALAS1/Alas1) are crucial enzymes in regulating heme biosynthesis. Isoniazid has recently been reported to up-regulate Alas1 but down-regulate Fech protein levels in mice; however the mechanism of isoniazid mediated heme synthesis …

Spinal Cord Trauma: An Overview Of Normal Structure And Function, Primary And Secondary Mechanisms Of Injury, And Emerging Treatment Modalities, Daniel Morin

Senior Honors Theses

The structures of the spinal cord and vertebral column are designed to provide flexibility, while still providing ample protection for the spinal cord deep within. While it does offer remarkable protection against most routine trauma, the spinal cord is still vulnerable to high-force etiologies of trauma and may become damaged as a result. These events are referred to as primary injury. Following the initial injury, the body’s own physiological responses cause a cascade of deleterious effects, known as secondary injury. Secondary injury is a major therapeutic target in mitigating the effects of spinal cord injury (SCI), and much research is …

The Combined Neuropharmacology And Toxicology Of Major 'Bath Salts' Constituents Mdpv, Mephedrone, And Methylone, Serena Allen

Electronic Theses and Dissertations

The synthetic cathinones, 3,4- methylenedioxypyrovalerone (MDPV), 4-methylmethcathinone (mephedrone), and 3,4- methylenedioxymethcathinone (methylone), gained worldwide notoriety as the psychoactive components of ‘bath salts;’ a marketing term used to circumvent federal drug laws and permit their legal sale. Previous studies have shown that these drugs share pharmacological characteristics with cocaine and the amphetamines, however, descriptions of their neurotoxic properties are limited. Moreover, while forensic analysis has revealed that the most frequently abused bath salts ‘brands’ contain binary and ternary mixtures of MDPV, mephedrone, and methylone, the majority of preclinical research has focused on explicating the individual effects of these drugs. Therefore, the …

Psychiatric And Cognitive Adverse Events: A Pooled Analysis Of Three Phase Iii Trials Of Adjunctive Eslicarbazepine Acetate For Partial-Onset Seizures., Eva Andermann, Victor Biton, Selim R Benbadis, Bassel Shneker, Aashit K Shah, Mar Carreño, Eugen Trinka, Elinor Ben-Menachem, Arnaud Biraben, Francisco Rocha, Helena Gama, Hailong Cheng, David Blum, Study 301, 302 And 304 Investigators

Pharmacy Articles

OBJECTIVE: To evaluate the nature and incidence of psychiatric and cognitive adverse events (AEs) reported with eslicarbazepine acetate (ESL) used as adjunctive treatment for refractory partial-onset seizures (POS) in adults.

METHODS: This was a post-hoc analysis of data pooled from three randomized double-blind, placebo-controlled trials (BIA-2093-301, -302, -304). After an 8-week baseline period, patients received placebo or adjunctive ESL 400mg (studies 301 and 302 only), 800mg, or 1200mg once daily (QD) for 14weeks (2-week titration period, 12-week maintenance period). Psychiatric and cognitive AEs were identified from individual patient data. Suicidality was also evaluated using the Columbia-Classification Algorithm of Suicide Assessment …

Linear Ubiquitin Chain-Binding Domains, Lilian Fennell, Simin Rahighi, Fumiyo Ikeda

Pharmacy Faculty Articles and Research

Ubiquitin modification (ubiquitination) of target proteins can vary with respect to chain lengths, linkage type, and chain forms, such as homologous, mixed, and branched ubiquitin chains. Thus, ubiquitination can generate multiple unique surfaces on a target protein substrate. Ubiquitin‐binding domains (UBDs) recognize ubiquitinated substrates, by specifically binding to these unique surfaces, modulate the formation of cellular signaling complexes and regulate downstream signaling cascades. Among the eight different homotypic chain types, Met1‐linked (also termed linear) chains are the only chains in which linkage occurs on a non‐Lys residue of ubiquitin. Linear ubiquitin chains have been implicated in immune responses, cell death …

Aktivitas Mukolitik Kombinasi Ekstrak Etanol Daun Kemangi Dan Ekstrak Etanol Daun Sirih Merah, Neng Fisheri Kurniati, Deden Winda Suwandi, Safira Yuniati

Pharmaceutical Sciences and Research

A cough is a protective physiological mechanism that is useful for removing and clearing the respiratory tract from sputum and foreign particles that can cause infection. Treatments for cough disorders using medicinal plants were conducted because medicinal plants were widely known to have less side effects than synthetic drugs. Basil leaves (Ocimum sanctum L.) and red betel leaves (Piper crocatum Ruiz and Pav) have been used traditionally to treat a cough. The purpose of this study was to determine the mucolytic activity, and the effective concentration of the combination of basil and red betel leaves ethanol extract. The mucolytic activity …

Sensitivity Of Escherichia Coli Bacteria Towards Antibiotics In Patient With Diabetic Foot Ulcer, Rafika Sari, Pratiwi Apridamayanti, Indira Diah Puspita

Pharmaceutical Sciences and Research

Chronic complication of diabetes mellitus is diabetic foot ulcers. Diabetic foot ulcer can be defined as an open wound in the feet which will become infected as the result of high blood sugar levels that develops and become place of bacteria. One of the bacteria in diabetic foot ulcer is Escherichia coli. Imprecise use of antibiotics in the treatment of diabetic foot ulcers can cause antibiotic resistance to bacteria. This study aims to determine antibiotic sensitivity of Escherichia coli bacteria in diabetic foot ulcer Wagner grade III and IV. Samples of diabetic foot ulcer swab’s with Wagner grade III and …

Evaluasi Rasionalitas Penggunaan Obat Antihipertensi Di Puskesmas Siantan Hilir Kota Pontianak Tahun 2015, Eka Kartika Untari, Alvani Renata Agilina, Ressi Susanti

Pharmaceutical Sciences and Research

Hypertension is widely known as cardiovascular disease. In addition to resulting heart failure, hypertension can result in kidney failure and cerebrovascular disease. This study was aimed to determine the percentage of treatment rationality of hypertensive patient treatment outpatient in Puskesmas Siantan Hilir Pontianak 2015 which includes the appropriate indication, appropriate drug, appropriate patient, and appropriate dose based on the guideline JNC 7. This study was cross-sectional study using medical records of outpatient hypertension patients in 2015. The total of sample analyzed in this research were 92 medical records of hypertension patients from 118 medical records. The percentage of using the …

Evaluation Of Propolis And Milk Administration On Caffein-Induced Mus Musculus Fetus Skeletal, Dwisari Dillasamola, Almahdy A, Novita Purnama Sari, Biomechy Oktomalio Putri, Noverial Noverial, Skunda Diliarosta

Pharmaceutical Sciences and Research

Caffeine consumption by pregnant women at doses above 300 mg/day was suggested to cause skeletal damage. Propolis with high flavonoids concentration could increase the number of osteoblasts. This research aims to evaluate the effect of propolis and milk administration on fetal skeletal of caffeine-induced female mice (Mus musculus). Mice were divided into six groups: negative group, positive group of caffeine (a dose of 75 mg/kg BW), positive group of propolis (a dose of 1400 mg/kg BW), positive group of milk (200 ml), group D1 (caffeine 75 mg/kg BW and propolis 1400 mg/kg BW) and group D2 (caffeine 75 mg/kg BW …

Optimasi Aktivitas Bakteriosin Yang Dihasilkan Oleh Bakteri Lactobacillus Plantarum Dari Minuman Ce Hun Tiau, Rafika Sari, Pratiwi Apridamayanti, Melly Octaviani

Pharmaceutical Sciences and Research

Bacteriocin is a protein compound with a small molecular weight that has an antibacterial activity. Bacteriocin has been widely applied as a natural food preservative, as it effectively prevents the growth of pathogenic bacteria in foods and beverages. The aim of this research was to know the activity of bacteriocin produced by lactic acid bacteria Lactobacillus plantarum from Ce hun tiau beverages against Escherichia coli and Staphylococcus aureuswith different pH and temperature treatments. In this study, Lactobacillus plantarum bacteria isolated from Ce hun tiau beverages were characterized by Gram staining test. Bacteriocin was extracted from Lactobacillus plantarum bacteria which had …

Peran Tenaga Kefarmasian Dalam Penanggulangan Bencana Role Of Pharmacist In Disaster Management, Meutia Faradilla

Pharmaceutical Sciences and Research

Indonesia is a country that has high potency to be affected by disaster, either by natural or man-made disaster. After the 2004 tsunami, Indonesian government has improved its disaster prevention policy and program. In disaster management study, health management in disaster setting is aimed to assure the implementation of health service toward victims accordingly. As integrated part of the healthcare team in disaster management, pharmacists have to understand the importance of pharmaceutical care in pre-disaster, disaster, and post-disaster phase. This article aims to provide an overview on pharmacists’ role in disaster management from preparing and distributing medicine and medical devices …

Potency Of (Poly) Acrylic/Carboxymethyl Starch-Chitosan Biohydrogel For Curcumin Oral Delivery Matrix, Eka Ruriani, Djumali Mangunwidjaja, Nur Richana, Titi Candra Sunarti

Pharmaceutical Sciences and Research

Biohydrogel has gathered great interest in the pharmaceuticals field. This natural polymers were biodegradable, non-toxic, biocompatible, and its specific ability to response environment change can be considered for the controlled released matric of bioactive compound. In this study, the biohydrogel was synthesized by graft-copolymerization of acrylic acid onto carboxymethyl starch (CMS) and chitosan. The objective of this research was to determine the effect of CMS-chitosan ratio on the biohydrogel characteristic. The acrylic acid was grafted on to the backbone (3:1) using cerric ammonium nitrate as the inisiator.A standarded curcumin was applied to test the binding potency of matrix. A higher …

The Hospital Antimicrobial Use Process: From Beginning To End, William R. Truong, Jason Yamaki

Pharmacy Faculty Articles and Research

Hospital antimicrobial stewardship (AMS) programs are responsible for ensuring that all antimicrobials are utilized in the most appropriate and safe manner to improve patient outcomes, prevent adverse drug reactions, and prevent the development of antimicrobial resistance. This Perspectives article outlines the hospital antimicrobial use process (AUP), the foundational system that ensures that all antimicrobials are utilized in the most appropriate and safe manner. The AUP consists of the following steps: antimicrobial ordering, order verification, preparation and delivery, administration, monitoring, and discharge prescribing. AMS programs should determine how each step contributes to how an antimicrobial is used appropriately or inappropriately at …

Translesion Synthesis Inhibitors As Anti-Cancer Adjuvant Agents, Kelly Allison Chan

University Scholar Projects

The translesion synthesis (TLS) pathway is a major mechanism through which cancer cells replicate past DNA lesions and promote chemoresistance. TLS allows cancers to survive genotoxic chemotherapy and increases the rate of mutation in tumors leading to drug-resistant cells. Cancer cells use a set of specialized low-fidelity TLS DNA polymerases to copy over lesions with Rev1 serving as a key scaffolding protein. Suppressing Rev1 activity sensitizes cancers to genotoxic chemotherapy and reduces the onset of chemoresistance by decreasing tumor mutation rate. Disruption of the Rev1/polζ-dependent TLS selective inhibitors has demonstrated the ability to sensitize cancer cells to platinating agents and …

Evaluating Itraconazole Analogues And Translesion Synthesis Inhibitors As Anti-Cancer Agents, Kelly Allison Chan

Honors Scholar Theses

My projects were to evaluate itraconazole (ITZ) analogues as anti-cancer hedgehog (Hh) and angiogenesis inhibitors, and translesion synthesis (TLS) inhibitors as anti-cancer agents. Itraconazole (ITZ) is a clinically effective triazole antifungal agent that has also been identified for its anti-cancer properties. As reported in the current literature, ITZ inhibits Gli1 transcription of the Hedgehog (Hh) signaling pathway and angiogenesis. However, the triazole moiety of ITZ has a detrimental side effect of inhibiting cytochrome P450 3A4 enzymes (CYP3A4). Thus, we have removed the triazole from the ITZ scaffold and develop a new series of ITZ analogues called des-triazole ITZ analogues. The …

Human Β-Defensin 1 And Β-Defensin 3 (Mouse Ortholog Mbd14) Function As Full Endogenous Agonists At Select Melanocortin Receptors, Mark D. Ericson, Anamika Singh, Srinivasa R. Tala, Erica M. Haslach, Marvin L. Dirain, Jay W. Schaub, Viktor Flores, Natalie Eick, Cody J. Lensing, Katie T. Freeman, Branden A. Smeester, Danielle N. Adank, Stacey L. Wilber, Robert Speth, Carrie Haskell-Luevano

HPD Articles

β-Defensin 3 (BD3) was identified as a ligand for the melanocortin receptors (MCRs) in 2007, although the pharmacology activity of BD3 has not been clearly elucidated. Herein, it is demonstrated that human BD3 and mouse BD3 are full micromolar agonists at the MCRs. Furthermore, mouse β-defensin 1 (BD1) and human BD1 are also MCR micromolar agonists. This work identifies BD1 as an endogenous MCR ligand and clarifies the controversial role of BD3 as a micromolar agonist.

A Study Of Albendazole And Artemisinin Drugs Under Electrochemical Oxidation, Zahilis A. Mazzochette

Theses and Dissertations

This work is aimed to investigate the metabolic behavior of albendazole and artemisinin. The electrochemical oxidation and reduction of these drugs were performed on electrode materials to mimic their metabolism in vivo using cyclic voltammetry and bulk electrolysis analysis. The oxidation of albendazole on gold electrode surface yielded albendazole sulfoxide and albendazole sulfone which are the main metabolites of this drug in vivo. Reduction of artemisinin on glassy carbon (GC) electrode surface yielded dihydroartemisinin and deoxy artemisinin. The formation of these products was monitored using liquid chromatography and mass spectrometry techniques. The redox processes for both drugs were shown to …