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Articles 31 - 60 of 194
Full-Text Articles in Pharmacy and Pharmaceutical Sciences
Evaluation Methods For Vaccination Campaigns On College Campuses: A Scoping Review, Alexcia Carr, Eric Pittman, Hyllore Imeri, Saara Nasruddin, Wesley Sparkmon, Katherine J. Head, Sarah Vivo, Marie Barnard
Evaluation Methods For Vaccination Campaigns On College Campuses: A Scoping Review, Alexcia Carr, Eric Pittman, Hyllore Imeri, Saara Nasruddin, Wesley Sparkmon, Katherine J. Head, Sarah Vivo, Marie Barnard
Faculty and Student Publications
Background: Vaccinations are successful, cost-effective tools to prevent the spread of certain infectious diseases. Many colleges conduct vaccination campaigns on their campuses for various vaccinepreventable diseases, including measles, mumps, influenza, HPV, and most recently, for SARS-CoV-2, the virus responsible for COVID-19. Implementing these campaigns requires substantial effort and understanding their effectiveness is an important factor in justifying these programs.
Aim: This scoping review aims to identify, review, and summarize existing evaluation methods for vaccination campaigns on college campuses in order to provide evaluation guidance for institutions planning future vaccination campaigns.
Methods: Publications that focused on vaccination campaigns on college campuses …
Bioassay-Guided Isolation Of Iridoid Glucosides From Stenaria Nigricans, Their Biting Deterrence Against Aedes Aegypti (Diptera: Culicidae), And Repellency Assessment Against Imported Fire Ants (Hymenoptera: Formicidae), Fazila Zulfiqar, Abbas Ali, Zulfiqar Ali, Ikhlas A. Khan
Bioassay-Guided Isolation Of Iridoid Glucosides From Stenaria Nigricans, Their Biting Deterrence Against Aedes Aegypti (Diptera: Culicidae), And Repellency Assessment Against Imported Fire Ants (Hymenoptera: Formicidae), Fazila Zulfiqar, Abbas Ali, Zulfiqar Ali, Ikhlas A. Khan
Faculty and Student Publications
In our natural product screening program, we screened natural products for their repellency and toxicity against insect vectors. Methanolic extract of aerial parts of Stenaria nigricans (Lam.), with no published chemistry, was tested for repellency against mosquitoes and imported hybrid fire ants. Methanolic extracts showed biting deterrence similar to DEET (N,N-diethyl-3-methylbenzamide) against Aedes aegypti L. Based on this activity, the crude extract was fractionated into chloroform, ethyl acetate, and methanol subfractions. The active methanolic subfraction was further fractionated into 13 subfractions. These fractions were tested for their biting deterrence against Ae. Aegypti. Active subfractions were further characterized to identify the …
Synthesis And Inhibitory Activity Of Machaeridiol-Based Novel Anti-Mrsa And Anti-Vre Compounds And Their Profiling For Cancer-Related Signaling Pathways, Mallika Kumarihamy, Siddharth Tripathi, Premalatha Balachandran, Bharathi Avula
Synthesis And Inhibitory Activity Of Machaeridiol-Based Novel Anti-Mrsa And Anti-Vre Compounds And Their Profiling For Cancer-Related Signaling Pathways, Mallika Kumarihamy, Siddharth Tripathi, Premalatha Balachandran, Bharathi Avula
Faculty and Student Publications
Three unique 5,6-seco-hexahydrodibenzopyrans (seco-HHDBP) machaeridiols A–C, reported previously from Machaerium Pers., have displayed potent activities against methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus faecium, and E. faecalis (VRE). In order to enrich the pipeline of natural product-derived antimicrobial compounds, a series of novel machaeridiol-based analogs (1–17) were prepared by coupling stemofuran, pinosylvin, and resveratrol legends with monoterpene units R-(−)-α-phellandrene, (−)-p-mentha-2,8-diene-1-ol, and geraniol, and their inhibitory activities were profiled against MRSA ATCC 1708, VRE ATCC 700221, and cancer signaling pathways. Compounds 5 and 11 showed strong in vitro activities with MIC values of 2.5 μg/mL and 1.25 μg/mL against MRSA, respectively, and …
Hiv-1 Tat Upregulates The Receptor For Advanced Glycation End Products And Superoxide Dismutase-2 In The Heart Of Transgenic Mice, Alaa N. Qrareya, Nason S. Wise, Emmanuel R. Hodges, Fakhri Mahdi
Hiv-1 Tat Upregulates The Receptor For Advanced Glycation End Products And Superoxide Dismutase-2 In The Heart Of Transgenic Mice, Alaa N. Qrareya, Nason S. Wise, Emmanuel R. Hodges, Fakhri Mahdi
Faculty and Student Publications
Cardiovascular disorder (CVD) is a common comorbidity in people living with HIV (PLWH). Although the underlying mechanisms are unknown, virotoxic HIV proteins, such as the trans-activator of transcription (Tat), likely contribute to CVD pathogenesis. Tat expression in mouse myocardium has been found to induce cardiac dysfunction and increase markers of endothelial toxicity. However, the role that Tat may play in the development of CVD pathogenesis is unclear. The capacity for Tat to impact cardiac function was assessed using AC16 human cardiomyocyte cells and adult male and female transgenic mice that conditionally expressed Tat [Tat(+)], or did not [Tat(−)]. In AC16 …
Immunomodulatory Effects Of Plant Extracts From Salvia Deserta Schang. And Salvia Sclarea L., Aizhan Zhussupova, Gaziza Zhumaliyeva, Vyacheslav Ogay, Assel Issabekova
Immunomodulatory Effects Of Plant Extracts From Salvia Deserta Schang. And Salvia Sclarea L., Aizhan Zhussupova, Gaziza Zhumaliyeva, Vyacheslav Ogay, Assel Issabekova
Faculty and Student Publications
Medicines, their safety, effectiveness and quality are indispensable factors of national security, important on a global scale. The COVID-19 pandemic has once again emphasized the importance of improving the immune response of the body in the face of severe viral infections. Plants from the Salvia L. genus have long been used in traditional medicine for treatment of inflammatory processes, parasitic diseases, bacterial and viral infections. The aim of the current study was to evaluate the immunomodulatory effects of plant extracts LS-1, LS-2 from Salvia deserta Schang. and LS-3, LS-4 from Salvia sclarea L. plants growing in southern Kazakhstan by conventional …
Phytochemical Investigation Of Egyptian Spinach Leaves, A Potential Source For Antileukemic Metabolites: In Vitro And In Silico Study, Shimaa M. Abdelgawad, Mona H. Hetta, Mohamed A. Ibrahim, Premalatha Balachandran
Phytochemical Investigation Of Egyptian Spinach Leaves, A Potential Source For Antileukemic Metabolites: In Vitro And In Silico Study, Shimaa M. Abdelgawad, Mona H. Hetta, Mohamed A. Ibrahim, Premalatha Balachandran
Faculty and Student Publications
Spinacia oleracea L., Amaranthaceae, leaves cultivated in Egypt demonstrated a potential antileukemic activity against the chronic myeloid leukemia, K562 cell line. Thus, the aim of this study is to carry out a phytochemical investigation of S. oleracea leaves as well as the isolation of its antileukemic phytoconstituents. Phytochemical investigation of S. oleracea leaves resulted in the isolation of seventeen known compounds. The biological study revealed that compounds hexaprenol, phytol, and 18-[(1-oxohexadecyl) oxy]-9-octadecenoic acid exhibited a remarkable antiproliferative activity against K562 cells in vitro. A mechanistic in silico study showed that hexaprenol, phytol, and 18-[(1-oxohexadecyl) oxy]-9-octadecenoic acid exhibited a strong binding …
Interactions Of Marine Sulfated Glycans With Antithrombin And Platelet Factor 4, Wenjing Zhang, Weihua Jin, Vitor H. Pomin, Fuming Zhang
Interactions Of Marine Sulfated Glycans With Antithrombin And Platelet Factor 4, Wenjing Zhang, Weihua Jin, Vitor H. Pomin, Fuming Zhang
Faculty and Student Publications
The molecular interactions of sulfated glycans, such as heparin, with antithrombin (AT) and platelet factor 4 (PF4) are essential for certain biological events such as anticoagulation and heparin induced thrombocytopenia (HIT). In this study, a library including 84 sulfated glycans (polymers and oligomers) extracted from marine algae along with several animal-originated polysaccharides were subjected to a structure-activity relationship (SAR) study regarding their specific molecular interactions with AT and PF4 using surface plasmon resonance. In this SAR study, multiple characteristics were considered including different algal species, different methods of extraction, molecular weight, monosaccharide composition, sulfate content and pattern and branching vs. …
Inhibition Of Sars-Cov-2 Wild-Type (Wuhan-Hu-1) And Delta (B.1.617.2) Strains By Marine Sulfated Glycans, Rohini Dwivedi, Poonam Sharma, Marwa Farrag, Seon Beom Kim
Inhibition Of Sars-Cov-2 Wild-Type (Wuhan-Hu-1) And Delta (B.1.617.2) Strains By Marine Sulfated Glycans, Rohini Dwivedi, Poonam Sharma, Marwa Farrag, Seon Beom Kim
Faculty and Student Publications
The Coronavirus disease pandemic has steered the global therapeutic research efforts toward the discovery of potential anti-severe acute respiratory syndrome coronavirus (SARS-CoV-2) molecules. The role of the viral spike glycoprotein (S-protein) has been clearly established in SARS-CoV-2 infection through its capacity to bind to the host cell surface heparan sulfate proteoglycan (HSPG) and angiotensin-converting enzyme-2. The antiviral strategies targeting these 2 virus receptors are currently under intense investigation. However, the rapid evolution of the SARS-CoV-2 genome has resulted in numerous mutations in the S-protein posing a significant challenge for the design of S-protein-targeted inhibitors. As an example, the 2 key …
Preparation, Characterization And Pharmacokinetics Of Tolfenamic Acid-Loaded Solid Lipid Nanoparticles, Wei Xu, Zhaoyou Deng, Yifei Xiang, Dujuan Zhu
Preparation, Characterization And Pharmacokinetics Of Tolfenamic Acid-Loaded Solid Lipid Nanoparticles, Wei Xu, Zhaoyou Deng, Yifei Xiang, Dujuan Zhu
Faculty and Student Publications
The clinical use of nonsteroidal anti-inflammatory drugs is limited by their poor water solubility, unstable absorption, and low bioavailability. Solid lipid nanoparticles (SLNs) exhibit high biocompatibility and the ability to improve the bioavailability of drugs with low water solubility. Therefore, in this study, a tolfenamic acid solid lipid nanoparticle (TA-SLN) suspension was prepared by a hot melt–emulsification ultrasonication method to improve the sustained release and bioavailability of TA. The encapsulation efficiency (EE), loading capacity (LC), particle size, polydispersity index (PDI), and zeta potential of the TA-SLN suspension were 82.50 ± 0.63%, 25.13 ± 0.28%, 492 ± 6.51 nm, 0.309 ± …
Vis/Nir Spectra And Color Parameters According To Leaf Age Of Some Eucalyptus Species: Influence On Their Classification And Discrimination, Izabel P. Migacz, Jane Manfron, Paulo V. Farago, Vijayasankar Raman
Vis/Nir Spectra And Color Parameters According To Leaf Age Of Some Eucalyptus Species: Influence On Their Classification And Discrimination, Izabel P. Migacz, Jane Manfron, Paulo V. Farago, Vijayasankar Raman
Faculty and Student Publications
Aim of study: The aim of this study was to verify the differences in VIS/NIR spectra and leaf color parameters of leaves of Eucalyptus badjensis, E. benthamii, E. dunnii, E. grandis, E. globulus and E. saligna, at four ages, and their influence on species discrimination. Area of study: São Mateus do Sul, Paraná, Brazil. Materials and methods: Seedlings of the six species, with four replicates for each, were acclimatized in the same environment, in Oc-tober 2015, in an entirely randomized design. Leaf samples were collected from plants that were 6, 8, 10 and 12 months old. Three leaves from each …
Analysis Of Select Dietary Supplement Products Marketed To Support Or Boost The Immune System, Cindy Crawford, Bharathi Avula, Andrea T. Lindsey, Abraham Walter
Analysis Of Select Dietary Supplement Products Marketed To Support Or Boost The Immune System, Cindy Crawford, Bharathi Avula, Andrea T. Lindsey, Abraham Walter
Faculty and Student Publications
Importance: Cold, flu, and immunity dietary supplement product sales have skyrocketed since the start of the COVID-19 pandemic. Supporting or boosting the immune system has become an important reason for using dietary supplements, and many consumers are purchasing products through online platforms. Objectives: To examine whether select dietary supplement products advertised as supporting or boosting the immune system are accurately labeled according to the Supplement Facts label of listed ingredients and to qualitatively describe the product labels' characteristics in terms of claims made. Design, Setting, and Participants: In this case series, 30 featured immune health dietary supplements were selected and …
Computational Tools To Expedite The Identification Of Potential Pxr Modulators In Complex Natural Product Mixtures: A Case Study With Five Closely Related Licorice Species, Manal Alhusban, Pankaj Pandey, Jongmin Ahn, Bharathi Avula
Computational Tools To Expedite The Identification Of Potential Pxr Modulators In Complex Natural Product Mixtures: A Case Study With Five Closely Related Licorice Species, Manal Alhusban, Pankaj Pandey, Jongmin Ahn, Bharathi Avula
Faculty and Student Publications
The genus Glycyrrhiza, comprising approximately 36 spp., possesses complex structural diversity and is documented to possess a wide spectrum of biological activities. Understanding and finding the mechanisms of efficacy or safety for a plant-based therapy is very challenging, yet it is crucial and necessary to understand the polypharmacology of traditional medicines. Licorice extract was shown to modulate the xenobiotic receptors, which might manifest as a potential route for natural product-induced drug interactions. However, different mechanisms could be involved in this phenomenon. Since the induced herb-drug interaction of licorice supplements via Pregnane X receptor (PXR) is understudied, we ventured out to …
Indoloquinoline-Mediated Targeted Downregulation Of Kras Through Selective Stabilization Of The Mid-Promoter G-Quadruplex Structure, Alexandra Maria Psaras, Rhianna K. Carty, Jared T. Miller, L. Nathan Tumey
Indoloquinoline-Mediated Targeted Downregulation Of Kras Through Selective Stabilization Of The Mid-Promoter G-Quadruplex Structure, Alexandra Maria Psaras, Rhianna K. Carty, Jared T. Miller, L. Nathan Tumey
Faculty and Student Publications
KRAS is a well-validated anti-cancer therapeutic target, whose transcriptional downregulation has been demonstrated to be lethal to tumor cells with aberrant KRAS signaling. G-quadruplexes (G4s) are non-canonical nucleic acid structures that mediate central dogmatic events, such as DNA repair, telomere elongation, transcription and splicing events. G4s are attractive drug targets, as they are more globular than B-DNA, enabling more selective gene interactions. Moreover, their genomic prevalence is increased in oncogenic promoters, their formation is increased in human cancers, and they can be modulated with small molecules or targeted nucleic acids. The putative formation of multiple G4s has been described in …
Traditional Use, Phytochemical Profiles And Pharmacological Properties Of Artemisia Genus From Central Asia, Aliya Nurlybekova, Aidana Kudaibergen, Aizhan Kazymbetova, Magzhan Amangeldi
Traditional Use, Phytochemical Profiles And Pharmacological Properties Of Artemisia Genus From Central Asia, Aliya Nurlybekova, Aidana Kudaibergen, Aizhan Kazymbetova, Magzhan Amangeldi
Faculty and Student Publications
The flora of Kazakhstan is characterized by its wide variety of different types of medicinal plants, many of which can be used on an industrial scale. The Traditional Kazakh Medicine (TKM) was developed during centuries based on the six elements of ancient Kazakh theory, associating different fields such as pharmacology, anatomy, pathology, immunology and food nursing as well as disease prevention. The endemic Artemisia L. species are potential sources of unique and new natural products and new chemical structures, displaying diverse bioactivities and leading to the development of safe and effective phytomedicines against prevailing diseases in Kazakhstan and the Central …
Polymer Coated Polymeric (Pcp) Microneedles For Sampling Of Drugs And Biomarkers From Tissues, Deeksha Jakka, A. V. Matadh, H. N. Shivakumar, Howard Maibach
Polymer Coated Polymeric (Pcp) Microneedles For Sampling Of Drugs And Biomarkers From Tissues, Deeksha Jakka, A. V. Matadh, H. N. Shivakumar, Howard Maibach
Faculty and Student Publications
The Polymer Coated Polymeric (PCP) microneedles were fabricated using PVP K30 in the core and ethyl cellulose in the coating. The PCP microneedles do not disintegrate in the tissue upon insertion and rather stays intact and allows diffusion of drugs and analytes across the membrane both inward and outward. In this project the potential use of PCP microneedles for sampling analytes from the dermal tissue was explored. The amount of analyte sampled depended on the concentration in the tissue, physicochemical properties of the analyte and duration of insertion of the array in the tissue. Further, an advanced type of PCP …
Comparative Single Dose Pharmacokinetics And Metabolism Of Racemic Primaquine And Its Enantiomers In Human Volunteers, Washim Khan, Yan Hong Wang, Narayan D. Chaurasiya, Np Dhammika Nanayakkara
Comparative Single Dose Pharmacokinetics And Metabolism Of Racemic Primaquine And Its Enantiomers In Human Volunteers, Washim Khan, Yan Hong Wang, Narayan D. Chaurasiya, Np Dhammika Nanayakkara
Faculty and Student Publications
Primaquine (PQ) is a racemic drug used in treatment of malaria for six decades. Recent studies suggest that the two enantiomers of PQ are differentially metabolized in animals, and this results in different pharmacological and toxicological profiles. The current study characterizes the pharmacokinetic (PK) properties, metabolism and tolerability of the individual enantiomers of PQ in healthy human volunteers with normal glucose-6-phosphate dehydrogenase (G6PD) activity. Two cohorts (at two dose levels), each with 18 subjects, participated in three study arms in a crossover fashion: a single dose of the (−)-R enantiomer (RPQ), a single dose of the (+)-S enantiomer (SPQ), and …
Chemical Authentication And Speciation Of Salvia Botanicals: An Investigation Utilizing Gc/Q-Tof And Chemometrics, Joseph Lee, Mei Wang, Jianping Zhao, Bharathi Avula
Chemical Authentication And Speciation Of Salvia Botanicals: An Investigation Utilizing Gc/Q-Tof And Chemometrics, Joseph Lee, Mei Wang, Jianping Zhao, Bharathi Avula
Faculty and Student Publications
Members of the genus Salvia are used as culinary herbs and are prized for their purported medicinal attributes. Since physiological effects can vary widely between species of Salvia, it is of great importance to accurately identify botanical material to ensure safety for consumers. In the present study, an in-depth chemical investigation is performed utilizing GC/Q-ToF combined with chemometrics. Twenty-four authentic plant samples representing five commonly used Salvia species, viz. S. apiana, S. divinorum, S. mellifera, S. miltiorrhiza, and S. officinalis, are analyzed using a GC/Q-ToF technique. High-resolution spectral data are employed to construct a sample class prediction (SCP) model followed …
Synergistic Antibacterial Activity With Conventional Antibiotics And Mechanism Of Action Of Shikonin Against Methicillin‐Resistant Staphylococcus Aureus, Qian Qian Li, Hee Sung Chae, Ok Hwa Kang, Dong Yeul Kwon
Synergistic Antibacterial Activity With Conventional Antibiotics And Mechanism Of Action Of Shikonin Against Methicillin‐Resistant Staphylococcus Aureus, Qian Qian Li, Hee Sung Chae, Ok Hwa Kang, Dong Yeul Kwon
Faculty and Student Publications
Methicillin‐resistant Staphylococcus aureus (MRSA) is a troublesome pathogen that poses a global threat to public health. Shikonin (SKN) isolated from Lithospermum erythrorhizon (L. erythro-rhizon) possesses a variety of biological activities. This study aims to explore the effect of the combined application of SKN and traditional antibiotics on the vitality of MRSA and the inherent anti-bacterial mechanism of SKN. The synergies between SKN and antibiotics against MRSA and its clinical strain have been demonstrated by the checkerboard assay and the time‐kill assay. The effect of SKN on disrupting the integrity and permeability of bacterial cell membranes was verified by a nucleotide …
Chemical Fingerprinting Profile And Targeted Quantitative Analysis Of Phenolic Compounds From Rooibos Tea (Aspalathus Linearis) And Dietary Supplements Using Uhplc‐Pda‐Ms, Omer I. Fantoukh, Yan Hong Wang, Abidah Parveen, Mohammed F. Hawwal
Chemical Fingerprinting Profile And Targeted Quantitative Analysis Of Phenolic Compounds From Rooibos Tea (Aspalathus Linearis) And Dietary Supplements Using Uhplc‐Pda‐Ms, Omer I. Fantoukh, Yan Hong Wang, Abidah Parveen, Mohammed F. Hawwal
Faculty and Student Publications
Aspalathus linearis (Burm.f.) R. Dahlgren, commonly known as rooibos tea, was consumed traditionally by the indigenous South African inhabitants as an herbal remedy. Beside antioxidant properties, it displays antiallergic, antispasmodic, and hypoglycemic activities. An ultra‐high-performance liquid chromatography method coupled with photodiode array and mass spectrometry detectors were developed for the determination of 14 phenolic constituents from leaves and stems of A. linearis. The efficient separation was performed within 30 min at a temperature of 30 °C by using C‐18 column as the stationary phase and water/acetonitrile with 0.05% formic acid as the mobile phase. Method validation for linearity, repeatability, limits …
Design Of Topical Moxifloxacin Mucoadhesive Nanoemulsion For The Management Of Ocular Bacterial Infections, Ahmed Adel Ali Youssef, Ruchi Thakkar, Samir Senapati, Poorva H. Joshi
Design Of Topical Moxifloxacin Mucoadhesive Nanoemulsion For The Management Of Ocular Bacterial Infections, Ahmed Adel Ali Youssef, Ruchi Thakkar, Samir Senapati, Poorva H. Joshi
Faculty and Student Publications
Ocular bacterial infections can lead to serious visual disability without proper treatment. Moxifloxacin (MOX) has been approved by the US Food and Drug Administration as a monotherapy for ocular bacterial infections and is available commercially as an ophthalmic solution (0.5% w/v). However, precorneal retention, drainage, and low bioavailability remain the foremost challenges associated with current commercial eyedrops. With this study, we aimed to design a MOX-loaded nanoemulsion (NE; MOX-NE) with mucoadhesive agents (MOX-NEM) to sustain MOX release, as well as to overcome the potential drawbacks of the current commercial ophthalmic formulation. MOX-NE and MOX-NEM formulations were prepared by hot homogenization …
The International Cannabis Toolkit (Icanntoolkit): A Multidisciplinary Expert Consensus On Minimum Standards For Measuring Cannabis Use, Valentina Lorenzetti, Chandni Hindocha, Kat Petrilli, Paul Griffiths
The International Cannabis Toolkit (Icanntoolkit): A Multidisciplinary Expert Consensus On Minimum Standards For Measuring Cannabis Use, Valentina Lorenzetti, Chandni Hindocha, Kat Petrilli, Paul Griffiths
Faculty and Student Publications
Background: The lack of an agreed international minimum approach to measuring cannabis use hinders the integration of multidisciplinary evidence on the psychosocial, neurocognitive, clinical and public health consequences of cannabis use. Methods: A group of 25 international expert cannabis researchers convened to discuss a multidisciplinary framework for minimum standards to measure cannabis use globally in diverse settings. Results: The expert-based consensus agreed upon a three-layered hierarchical framework. Each layer—universal measures, detailed self-report and biological measures—reflected different research priorities and minimum standards, costs and ease of implementation. Additional work is needed to develop valid and precise assessments. Conclusions: Consistent use of …
Airborne And Dermal Collection Methods Of Gunshot Residue For Toxicity Studies, Samuel Cole Smith, Oscar Beau Black, Courtney Roper
Airborne And Dermal Collection Methods Of Gunshot Residue For Toxicity Studies, Samuel Cole Smith, Oscar Beau Black, Courtney Roper
Faculty and Student Publications
Gunshot residue (GSR) has potential negative health effects on humans as a result of inhalation and dermal exposure to the chemical and physical characteristics of GSR such as Pb, Sb, Ba, nitrocellulose, nitroglycerine, and particulate size fraction. Filter (size selective) and double-sided tape (non-size selective) samples collected airborne GSR during single and triple firing of a 0.22 caliber revolver. Dermal exposures were considered using hand swabs and de-leading wipes, designed to remove the heavy metals. The samples underwent analysis to investigate physical (morphology, size distribution, zeta potential), chemical (black carbon and element concentrations), and potential to induce oxidative stress (oxidative …
Isolation Of Echimidine And Its C-7 Isomers From Echium Plantagineum L. And Their Hepatotoxic Effect On Rat Hepatocytes, Michał Gleńsk, Marta K. Dudek, Peter Kinkade, Evelyn C.S. Santos
Isolation Of Echimidine And Its C-7 Isomers From Echium Plantagineum L. And Their Hepatotoxic Effect On Rat Hepatocytes, Michał Gleńsk, Marta K. Dudek, Peter Kinkade, Evelyn C.S. Santos
Faculty and Student Publications
Echimidine is the main pyrrolizidine alkaloid of Echium plantagineum L., a plant domesti-cated in many countries. Because of echimidine’s toxicity, this alkaloid has become a target of the European Food Safety Authority regulations, especially in regard to honey contamination. In this study, we determined by NMR spectroscopy that the main HPLC peak purified from zinc reduced plant extract with an MS [M + H]+ signal at m/z 398 corresponding to echimidine (1), and in fact also represents an isomeric echihumiline (2). A third isomer present in the smallest amount and barely re-solved by HPLC from co-eluting (1) and (2) was …
Development Of Α-Tocopherol Succinate-Based Nanostructured Lipid Carriers For Delivery Of Paclitaxel, Sushrut Marathe, Gauri Shadambikar, Tabish Mehraj, Suresh P. Sulochana
Development Of Α-Tocopherol Succinate-Based Nanostructured Lipid Carriers For Delivery Of Paclitaxel, Sushrut Marathe, Gauri Shadambikar, Tabish Mehraj, Suresh P. Sulochana
Faculty and Student Publications
The management of retinoblastoma (RB) involves the use of invasive treatment regimens. Paclitaxel (PTX), an effective antineoplastic compound used in the treatment of a wide range of malignant tumors, poses treatment challenges due to systemic toxicity, rapid elimination, and development of resistance. The goal of this work was to develop PTX-loaded, α-tocopherol succinate (αTS)-based, nanostructured lipid carrier (NLCs; αTS-PTX-NLC) and PEGylated αTS-PTX-NLC (αTS-PTX-PEG-NLC) to improve ocular bioavailability. The hot homogenization method was used to prepare the NLCs, and repeated measures ANOVA analysis was used for formulation optimization. αTS-PTX-NLC and αTS-PTX-PEG-NLC had a mean particle size, polydispersity index and zeta potential …
Essential Oil Yield, Composition, And Bioactivity Of Sagebrush Species In The Bighorn Mountains, Valtcho D. Zheljazkov, Charles L. Cantrell, Ekaterina A. Jeliazkova, Tess Astatkie
Essential Oil Yield, Composition, And Bioactivity Of Sagebrush Species In The Bighorn Mountains, Valtcho D. Zheljazkov, Charles L. Cantrell, Ekaterina A. Jeliazkova, Tess Astatkie
Faculty and Student Publications
Sagebrush (Artemisia spp.) are dominant wild plants in large areas of the U.S., Canada and Mexico, and they include several species and subspecies. The aim was to determine if there are significant differences in essential oil (EO) yield, composition, and biological activity of sagebrush within the Bighorn Mountains, U.S. The EO yield in fresh herbage varied from 0.15 to 1.69% for all species, including 0.25–1.69% in A. tridentata var. vaseyana, 0.64–1.44% in A. tridentata var. tridentata, 1% in A. tridentata var. wyomingensis, 0.8–1.2% in A. longifolia, 0.8–1% in A. cana, and 0.16% in A. ludoviciana. There was significant variability in …
Fractionation Of Sulfated Galactan From The Red Alga Botryocladia Occidentalis Separates Its Anticoagulant And Anti-Sars-Cov-2 Properties, Seon Beom Kim, Mary Zoepfl, Priyanka Samanta, Fuming Zhang
Fractionation Of Sulfated Galactan From The Red Alga Botryocladia Occidentalis Separates Its Anticoagulant And Anti-Sars-Cov-2 Properties, Seon Beom Kim, Mary Zoepfl, Priyanka Samanta, Fuming Zhang
Faculty and Student Publications
Sulfation pattern and molecular weight (MW) play a key role in the biological actions of sulfated glycans. Besides anticoagulant effects, certain sulfated glycans can also exhibit anti-SARS-CoV-2 properties. To develop a more selective antiviral carbohydrate, an efficient strategy to separate these two actions is required. In this work, low MW fractions derived from the red alga Botryocladia occidentalis sulfated galactan (BoSG) were generated, structurally characterized, and tested for activity against SARS-CoV-2 and blood coagulation. The lowest MW fraction was found to be primarily composed of octasaccharides of monosulfated monosaccharides. Unlike heparin or native BoSG, we found that hydrolyzed BoSG products …
A Simple, Cost-Effective, And Green Hptlc Method For The Estimation Of Ascorbic Acid In Solvent And Ultrasound-Assisted Extracts Of Phyllanthus Emblica, Capsicum Annuum, And Psidium Guajava, Ahmed I. Foudah, Prawez Alam, Faiyaz Shakeel, Aftab Alam
A Simple, Cost-Effective, And Green Hptlc Method For The Estimation Of Ascorbic Acid In Solvent And Ultrasound-Assisted Extracts Of Phyllanthus Emblica, Capsicum Annuum, And Psidium Guajava, Ahmed I. Foudah, Prawez Alam, Faiyaz Shakeel, Aftab Alam
Faculty and Student Publications
Greener analytical methodologies for the estimation of ascorbic acid (AA) are poorly reported in the literature. Furthermore, the green indexes of the literature’s analytical assays of AA estimation have not been assessed. As a consequence, the aim of this research is to invent and validate a simple, cost-effective, and green reverse-phase “high-performance thin-layer chromatography (HPTLC)” method for the estimating AA in the solvent extracts (SE) and ultrasound-assisted extracts (UAE) of Phyllanthus emblica, Psidium guajava, and Capsicum annuum. The greener mobile phase for AA estimation was a binary mixture of water and ethanol (70:30, v/v). At a wavelength of 265 nm, …
Rap1a Activity Elevated The Impact Of Endogenous Ages In Diabetic Collagen To Stimulate Increased Myofibroblast Transition And Oxidative Stress, Stephanie D. Burr, Christopher C. Dorroh, James A. Stewart
Rap1a Activity Elevated The Impact Of Endogenous Ages In Diabetic Collagen To Stimulate Increased Myofibroblast Transition And Oxidative Stress, Stephanie D. Burr, Christopher C. Dorroh, James A. Stewart
Faculty and Student Publications
Diabetics have an increased risk for heart failure due to cardiac fibroblast functional changes occurring as a result of AGE/RAGE signaling. Advanced glycation end products (AGEs) levels are higher in diabetics and stimulate elevated RAGE (receptor for AGE) signaling. AGE/RAGE signaling can alter the expression of proteins linked to extracellular matrix (ECM) remodeling and oxidative stressors. Our lab has identified a small GTPase, Rap1a, that may overlap the AGE/RAGE signaling pathway. We sought to determine the role Rap1a plays in mediating AGE/RAGE changes and to assess the impact of isolated collagen on further altering these changes. Primary cardiac fibroblasts from …
Selective Inhibition Of Plasmodium Falciparum Atpase 6 By Artemisinins And Identification Of New Classes Of Inhibitors After Expression In Yeast, Catherine M. Moore, Jigang Wang, Qingsong Lin, Pedro Ferreira
Selective Inhibition Of Plasmodium Falciparum Atpase 6 By Artemisinins And Identification Of New Classes Of Inhibitors After Expression In Yeast, Catherine M. Moore, Jigang Wang, Qingsong Lin, Pedro Ferreira
Faculty and Student Publications
Treatment failures with artemisinin combination therapies (ACTs) threaten global efforts to eradicate malaria. They highlight the importance of identifying drug targets and new inhibitors and of studying how existing antimalarial classes work. Here, we report the successful development of a heterologous expression-based compoundscreening tool. The validated drug target Plasmodium falciparum ATPase 6 (PfATP6) and a mammalian orthologue (sarco/endoplasmic reticulum calcium ATPase 1a [SERCA1a]) were functionally expressed in Saccharomyces cerevisiae, providing a robust, sensitive, and specific screening tool. Whole-cell and in vitro assays consistently demonstrated inhibition and labeling of PfATP6 by artemisinins. Mutations in PfATP6 resulted in fitness costs that were …
Potential Pro-Inflammatory Effect Of Vitamin E Analogs Through Mitigation Of Tetrahydrocannabinol (Thc) Binding To The Cannabinoid 2 Receptor, Anjela Manandhar, Mona H. Haron, Samir A. Ross, Michael L. Klein
Potential Pro-Inflammatory Effect Of Vitamin E Analogs Through Mitigation Of Tetrahydrocannabinol (Thc) Binding To The Cannabinoid 2 Receptor, Anjela Manandhar, Mona H. Haron, Samir A. Ross, Michael L. Klein
Faculty and Student Publications
Vitamin E acetate, which is used as a diluent of tetrahydrocannabinol (THC), has been reported as the primary causative agent of e-cigarette, or vaping, product use-associated lung injury (EVALI). Here, we employ in vitro assays, docking, and molecular dynamics (MD) computer simulations to investigate the interaction of vitamin E with the membrane-bound cannabinoid 2 receptor (CB2R), and its role in modulating the binding affinity of THC to CB2R. From the MD simulations, we determined that vitamin E interacts with both CB2R and membrane phospholipids. Notably, the synchronized effect of these interactions likely facilitates vitamin E acting as a lipid modulator …