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Articles 1 - 14 of 14
Full-Text Articles in Pharmacology
An Observational Study Of The Effect Of Concomitant Levetiracetam On Apixaban Concentrations In A Hospital Cohort, Chazmyn Riley, Kevin Lam, Cristina Micale, Lynda Thomson, Douglas F. Stickle, Walter K. Kraft
An Observational Study Of The Effect Of Concomitant Levetiracetam On Apixaban Concentrations In A Hospital Cohort, Chazmyn Riley, Kevin Lam, Cristina Micale, Lynda Thomson, Douglas F. Stickle, Walter K. Kraft
Department of Pharmacology, Physiology, and Cancer Biology Faculty Papers
Despite the lack of evidence of a mechanism-based drug interaction, some professional organizations have advised caution coadministering apixaban and levetiracetam. Eligible patients taking apixaban with or without levetiracetam for any indication for at least 72 h were screened from the electronic medical records. Plasma samples from 77 patients were retrieved from salvaged clinical blood collections. Apixaban minimum and maximum concentrations (Cmin and Cmax) were compared using descriptive statistics in R. While the median Cmin and Cmax appear to be marginally elevated, there were no apparent differences relative to apixaban alone. These findings suggest no apparent interaction of levetiracetam and support …
Analysis Of Active Ingredients In Medicinal Herbs With High-Performance Liquid Chromatography And Related Technologies: A Review, T.-H. Tsai, C.-Y. Hong, C.-F. Chen
Analysis Of Active Ingredients In Medicinal Herbs With High-Performance Liquid Chromatography And Related Technologies: A Review, T.-H. Tsai, C.-Y. Hong, C.-F. Chen
Journal of Food and Drug Analysis
An increasing number of analytical techniques have been brought to bear on the herbal drugs used in traditional Chinese medicine. This in turn has led to improved quality control of medicinal herbs, ingredient stability and shelf-life tests, ensurement of the concentrations of herbal drug ingredients in biological fluids, and pharmacokinetic studies. In the past decades, gas chromatography has been the method of choice for the analysis of volatile compounds, while liquid chromatography is a highly successful separation technique for nonvolatile molecules. Recently, high-performance liquid chromatography coupled with various column and detection systems have become some of the most important techniques …
Synthesis, Pharmacokinetic Studies, And Metabolite Analysis Of Meridianin C In Rats Using A Validated Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry Method, Liangyu Xu, Zhaogen Wu, Karna Ramachandraiah, Guihun Jiang, Guozhe Zhang
Synthesis, Pharmacokinetic Studies, And Metabolite Analysis Of Meridianin C In Rats Using A Validated Ultra High Performance Liquid Chromatography-Tandem Mass Spectrometry Method, Liangyu Xu, Zhaogen Wu, Karna Ramachandraiah, Guihun Jiang, Guozhe Zhang
School of Graduate Studies Faculty Publications
Introduction: Meridianin C (MC) is a marine-derived indole alkaloid that has demonstrated kinase inhibitory and anti-tumor activities. Despite its diverse biological properties, no previous reports have systematically evaluated the in vivo quantitative analysis of MC and its metabolites. Methods: In this study, MC was synthesized following a previously reported procedure with slight modifications. A sensitive, accurate, and reliable ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC–MS/MS) method was developed to simultaneously detect MC and its five major metabolites (MC-1-N-O-GluA, MC-1-N-O-SO3H, MC-2′-N-O-GluA, MC-2′-N-O-SO3H, and MC-O-GluA-didehydration) in rat plasma. Rats received a single oral dose of MC (100 mg/kg), and pharmacokinetic analysis was …
The Pharmaceutical Applications Of Poisonous Compounds Found In Datura Stramonium, Ruby M. Raffaldt
The Pharmaceutical Applications Of Poisonous Compounds Found In Datura Stramonium, Ruby M. Raffaldt
Senior Theses
Datura stramonium is a plant that is known for its toxicity. However, a facet of this plant’s noxious chemicals, namely its tropane alkaloids, can be used medicinally. The aim of this paper was to compile knowledge on the botanical, chemical, and medicinal properties of Datura stramonium L with a focus on atropine, scopolamine, and anisodamine; three tropane alkaloid compounds with the ability to be both a poison and a medicine. Information was compiled using pre-existing studies, articles, and literature reviews on D. stramonium. For each of the three alkaloids, their biosynthetic pathways, targets, administration, distribution, metabolism, and excretion were discussed. …
Biodistribution And Method Validation Of Xylazine In A Mouse Model Using Liquid-Chromatography-Quadrupole-Time Of Flight Mass Spectrometry, Julia E. Perschbacher
Biodistribution And Method Validation Of Xylazine In A Mouse Model Using Liquid-Chromatography-Quadrupole-Time Of Flight Mass Spectrometry, Julia E. Perschbacher
Master of Science in Forensic Science Directed Research Projects
Xylazine is a nonopioid veterinary sedative and an α2 adrenergic receptor agonist. It emerged in the opioid epidemic as an adulterant of illicit fentanyl. As xylazine becomes more involved in fatal overdoses, it is relevant to elucidate its biodistribution post-exposure due to its exacerbation of adverse events, namely respiratory depression, as xylazine’s contributions to existing adverse effects of synthetic opioids is understudied. A bioanalytical method to quantify xylazine and select metabolites in tissue using LC-QToF was validated and applied to a preclinical mouse model in order to characterize xylazine’s biodistribution in whole blood and six tissues at a dose known …
Biodistribution Comparison Of Fentanyl And Morphine Following Acute And Repeated Expsoure, Rosamond M. Goodson
Biodistribution Comparison Of Fentanyl And Morphine Following Acute And Repeated Expsoure, Rosamond M. Goodson
Theses and Dissertations
The ongoing opioid crisis constitutes a dire public health threat that has resulted in staggering loss of life. In 2021, opioids were implicated in over 75% of the approximately 107,000 deaths attributed to drug overdose (CDC), and synthetic opioids such as fentanyl and its analogues are key drivers of the surge in opioid fatalities in recent years. Although fentanyl is a μ opioid receptor agonist, it has several distinct attributes compared to other drugs in this category, such as morphine. These include enhanced lipophilicity, heightened potency to induce respiratory depression, more rapid entry into the central nervous system, reduced sensitivity …
Exploiting Modulation Of The Blood-Brain And Blood-Tumor Barrier Permeability By Translational Focused Ultrasound For Therapeutic Delivery To Cns Metastases, Tasneem A. Arsiwala
Exploiting Modulation Of The Blood-Brain And Blood-Tumor Barrier Permeability By Translational Focused Ultrasound For Therapeutic Delivery To Cns Metastases, Tasneem A. Arsiwala
Graduate Theses, Dissertations, and Problem Reports (ETD)
Transcranial low-intensity focused ultrasound is a unique technology to modulate the integrity of tight endothelial junctions and transiently increase BBB/BTB permeability to enhance therapeutic delivery. Despite promising early studies, present literature lacks agreement on key experimental conditions, which restricts our knowledge and the technique's widespread translation. This dissertation first provides a critical review of the current gaps in knowledge regarding the universal use of LiFUS in preclinical and clinical use. We then identify key parameters for translational and predictable opening of the BBB using a 3T MRI coupled with a clinical device. Our investigation highlights that passive permeability of the …
Epigenetic Regulation Of Drug Metabolizing Enzymes In Normal Aging, Mohamad M. Kronfol
Epigenetic Regulation Of Drug Metabolizing Enzymes In Normal Aging, Mohamad M. Kronfol
Theses and Dissertations
Geriatric populations are at a higher risk for adverse drug reactions (ADRs). This may be partly due to changes in drug metabolism in old age, but the underlying mechanisms are poorly understood. Prior research in humans and mice has shown age-associated changes to the expression of several genes involved in drug metabolism. Furthermore, studies of human blood showed that epigenetic regulation of genes encoding drug metabolizing enzymes change with age. However, it is unknown if genes in the liver are similarly affected. Therefore, we hypothesize that genes encoding drug metabolizing enzymes may show differential epigenetic regulation in the liver with …
Pharmacokinetics, Tissue Distribution, Synergistic Activity, And Antitumor Activity Of Two Isomeric Flavones, Crystal L. Whitted
Pharmacokinetics, Tissue Distribution, Synergistic Activity, And Antitumor Activity Of Two Isomeric Flavones, Crystal L. Whitted
Electronic Theses and Dissertations
Flavonoids are polyphenolic secondary metabolites found in plants that have bioactive properties including antiviral, antioxidant, and anticancer. Two isomeric flavone were extracted from Gnaphalium elegans and Achyrocline bogotensis, plants used by the people from the Andean region of South America as remedies for cancer. 5,7-dihydroxy-3,6,8-trimethoxy-2-phenyl-4H-chromen-4-one (5, 7–dihydroxy- 3, 6, 8 trimethoxy flavone/ flavone A) and 3,5-dihydroxy-6,7,8-trimethoxy-2-phenyl-4H-chromen-4-one (3, 5–dihydroxy-6, 7, 8–trimethoxy flavone/ flavone B) have shown antineoplastic activity against colon cancer cell lines dependent upon their differentiation status. Pharmacokinetic studies reported herein were used to determine dosing for antitumor assays, as well as determine target tissue concentration. These included the …
Bioequivalence Study Of Abacavir 300 Mg Tablets In Healthy Thai Male Volunteers Under Fasting Conditions, Isariya Techatanawat, Chutima Manamuti, Jaturavit Vattanarongkup, Polsak Teerawonganan, Ekawan Yoosakul, Wiwat Supasena, Bancha Chuasuwan, Piengthong Narakorn, Ponanee Puranaoti
Bioequivalence Study Of Abacavir 300 Mg Tablets In Healthy Thai Male Volunteers Under Fasting Conditions, Isariya Techatanawat, Chutima Manamuti, Jaturavit Vattanarongkup, Polsak Teerawonganan, Ekawan Yoosakul, Wiwat Supasena, Bancha Chuasuwan, Piengthong Narakorn, Ponanee Puranaoti
The Thai Journal of Pharmaceutical Sciences
Abacavir is an antiretroviral drug that can be prescribed in single dose or in fixed-dose combination formulations to make adherence easier. Due to this advantage, a generic product of abacavir of GPO has been developed with lower price and would be bene...
Modulation Of The Pharmacokinetics And Pharmacodynamics Of Proteins By Polyethylene Glycol Conjugation, Reza Mehvar
Modulation Of The Pharmacokinetics And Pharmacodynamics Of Proteins By Polyethylene Glycol Conjugation, Reza Mehvar
Pharmacy Faculty Articles and Research
With the rapid advances in the field of biotechnology during the last decade, many peptides and proteins have been produced and evaluated for therapy of various diseases, including cancer. However, rapid clearance and the possibility of immunogenicity after the in vivo administration of these biotechnology-driven products have impeded their marketing. To circumvent these problems, synthetic and natural polymers such as polyethylene glycol (PEG) and dextrans, respectively, have been covalently attached to proteins, and some of these protein-polymer conjugates have shown promising therapeutic results. The conjugation of proteins with polymers usually causes a reduction in the recognition of the protein by …
Pharmacokinetics, Immune Response, And Biodistribution Of Iodine-131-Labeled Chimeric Mouse/Human Igg1, K 17-1a Monoclonal Antibody, Ruby Meredith, Albert Lobuglio, Walter Plott, Roger Orr, Ivan Brezovich, Charles Russell, Elizabeth Harvey, Michael Yester, Mansoor Saleh
Pharmacokinetics, Immune Response, And Biodistribution Of Iodine-131-Labeled Chimeric Mouse/Human Igg1, K 17-1a Monoclonal Antibody, Ruby Meredith, Albert Lobuglio, Walter Plott, Roger Orr, Ivan Brezovich, Charles Russell, Elizabeth Harvey, Michael Yester, Mansoor Saleh
Haematology and Oncology, East Africa
Pharmacokinetics,immunogenicity,and biodistributionof a 131I-Iabeledmouse/human chimenc monoclonal antibody (C17-1A) was studiedin six metastaticcoloncancerpatients. Pharmacokinetics obtalned from serum radioactivity or chi mera concentration were identical after 5 mCi of 131I(>17-1A withmeanalphahalf-livesof 17.6±2.3 and19.7±2.9 and meanbeta half-livesof 100.9±16.1 and 106.4±14.1 hr, respectively. HPLC analysis documented the monomeric chi rneiic17-lA withoutevidenceof immunecomplexesorfree 1311 None of the patients developed antibody after ‘31I-chi merle17-1A exposure.Radiolocalizationoccurredin known areas of disease >4 cm in all patients. The half-life of total body radioactivity was 58 ±7 hr by whole-body counts and 64 ±13 hr by urine measurements. Whole-body and bone marrow dose estimates ranged from 0.75-1 .03 and …
ยาปฏิชีวนะ กลุ่ม Fluorinated Quinolones, สุกัญญา เจษฎานนท์
ยาปฏิชีวนะ กลุ่ม Fluorinated Quinolones, สุกัญญา เจษฎานนท์
The Thai Journal of Pharmaceutical Sciences
ยากลุ่มควิโนโลน (quinolones) ชึ่งมีสูตรโครงสร้างทางเคมีสัมพันธ์กับ nalidixic acid ออกฤทธิ์ ได้เร็วและมีฤท...
Pharmacokinetics Of Theophylline Injections In Rabbits, U. Suvanakoot
Pharmacokinetics Of Theophylline Injections In Rabbits, U. Suvanakoot
The Thai Journal of Pharmaceutical Sciences
Pharmacokinetics of the theophylline injections were studied in four New Zealand rabbits, weighing 3 to 4 kg. Each rabbit received theophylline, 200 mg. as a continuous (10-m inute) intravenous infusion. The pharmacokinetics of theophylline were describe...