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Articles 61 - 76 of 76
Full-Text Articles in Medicine and Health Sciences
Impaired M3 And Enhanced M2 Muscarinic Receptor Contractile Function In A Streptozotocin Model Of Mouse Diabetic Urinary Bladder, K. J. Pak, Rennolds S. Ostrom, M. Matsui, F. J. Ehlert
Impaired M3 And Enhanced M2 Muscarinic Receptor Contractile Function In A Streptozotocin Model Of Mouse Diabetic Urinary Bladder, K. J. Pak, Rennolds S. Ostrom, M. Matsui, F. J. Ehlert
Pharmacy Faculty Articles and Research
We investigated the contractile roles of M2 and M3 muscarinic receptors in urinary bladder from streptozotocin-treated mice. Wild-type and M2 muscarinic receptor knockout (M2 KO) mice were given a single injection of vehicle or streptozotocin (125 mg kg−1) 2–24 weeks prior to bladder assays. The effect of forskolin on contractions elicited to the muscarinic agonist, oxotremorine-M, was measured in isolated urinary bladder (intact or denuded of urothelium). Denuded urinary bladder from vehicle-treated wild-type and M2 KO mice exhibited similar contractile responses to oxotremorine-M, when contraction was normalized relative to that elicited by KCl (50 mM). Eight to 9 weeks after …
Plasma Pharmacokinetics And Tissue Disposition Of Novel Dextran- Methylprednisolone Conjugates With Peptide Linkers In Rats, Suman Penugonda, Hitesh K. Agarwal, Keykavous Parang, Reza Mehvar
Plasma Pharmacokinetics And Tissue Disposition Of Novel Dextran- Methylprednisolone Conjugates With Peptide Linkers In Rats, Suman Penugonda, Hitesh K. Agarwal, Keykavous Parang, Reza Mehvar
Pharmacy Faculty Articles and Research
The plasma and tissue disposition of two novel dextran prodrugs of methylprednisolone (MP) containing one (DMP-1) or five (DMP-5) amino acids as linkers were studied in rats. Single 5-mg/kg doses (MP equivalent) of each prodrug or MP were administered intravenously, and blood and tissue samples were collected. Prodrug and drug concentrations were quantitated using HPLC, and noncompartmental pharmacokinetic parameters were estimated. Whereas conjugation of MP with dextran in both prodrugs substantially decreased the clearance of the drug by ∼200-fold, the accumulations of the drug in the liver, spleen, and kidneys were significantly increased by conjugation. However, the extent of accumulation …
Development Of Cytarabine Prodrugs And Delivery Systems For Leukemia Treatment, Bhupender S. Chhikara, Keykavous Parang
Development Of Cytarabine Prodrugs And Delivery Systems For Leukemia Treatment, Bhupender S. Chhikara, Keykavous Parang
Pharmacy Faculty Articles and Research
Importance of the field: Cytarabine is a polar nucleoside drug used for the treatment of myeloid leukemia and non-Hodgkin’s lymphoma. The drug has a short plasma half-life, low stability, and limited bioavailability. Overdosing of patients with continuous infusions may lead to side effects. Thus, various prodrug strategies and delivery systems have been extensively explored to enhance the half-life, stability, and delivery of cytarabine. Among the recent cytarabine prodrugs, amino acid conjugate ValCytarabine and fatty acid derivative CP-4055 (in phase 3 trials) have been investigated for the treatment of leukemia and solid tumors, respectively. Alternatively, delivery systems of cytarabine have …
Synthesis, Antiviral And Contraceptive Activities Of Nucleoside-Sodium Cellulose Sulfate Acetate And Succinate Conjugates, Hitesh K. Agarwal, Anil Kumar, Gustavo F. Doncel, Keykavous Parang
Synthesis, Antiviral And Contraceptive Activities Of Nucleoside-Sodium Cellulose Sulfate Acetate And Succinate Conjugates, Hitesh K. Agarwal, Anil Kumar, Gustavo F. Doncel, Keykavous Parang
Pharmacy Faculty Articles and Research
Chemical conjugates between sodium cellulose sulfate (CS), displaying contraceptive and HIV-entry inhibiting properties, and nucleoside reverse transcriptase inhibitors (NRTIs) (3′-azido-2′,3′-dideoxythymidine (AZT), 3′-fluoro-2′,3′-dideoxythymidine (FLT), or 2',3'-dideoxy-3'-thiacytidine (3TC)) were designed to simultaneously provide contraceptive and anti-HIV activity. Two linkers, acetate and succinate, were used to conjugate the nucleoside analogs with CS. The conjugates containing cellulose sulfate-acetate (CSA) (e.g., AZT-CSA and FLT-CSA) were found to be more potent than CS and other conjugates (e.g., AZT-succinate-CS, and FLT-succinate-CS). The presence of both sulfate and the acetate groups on cellulose were critical for generating maximum anti-HIV activity. In addition to showing equal potency against wild-type …
Prospects And Pits On The Path Of Biomimetics: The Case Of Tooth Enamel, Vuk Uskoković
Prospects And Pits On The Path Of Biomimetics: The Case Of Tooth Enamel, Vuk Uskoković
Pharmacy Faculty Articles and Research
This review presents a discourse on challenges in understanding and imitating the process of amelogenesis in vitro on the molecular scale. In light of the analysis of imitation of the growth of dental enamel, it also impends on the prospects and potential drawbacks of the biomimetic approach in general. As the formation of enamel proceeds with the protein matrix guiding the crystal growth, while at the same time conducting its own degradation and removal, it is argued that three aspects of amelogenesis need to be induced in parallel: a) crystal growth; b) protein assembly; c) proteolytic degradation. A particular emphasis …
Pk/Pd Modelling Of Comb-Shaped Pegylated Salmon Calcitonin Conjugates Of Differing Molecular Weights, Sinead Ryan, Jesus Maria Frias, David H. Haddleton, David J. Brayden
Pk/Pd Modelling Of Comb-Shaped Pegylated Salmon Calcitonin Conjugates Of Differing Molecular Weights, Sinead Ryan, Jesus Maria Frias, David H. Haddleton, David J. Brayden
Articles
Salmon calcitonin (sCT) was conjugated via cysteine-1 to novel combed-shaped end-functionalised poly(PEG) methyl ether methacrylate) (sCT-P) comb-shaped polymers, to yield conjugates of total molecular weights (MW) inclusive of sCT: 6.5, 9.5, 23 and 40 kDa. The conjugates were characterised by HPLC and their in vitro and in vivo bioactivity was measured by cAMP assay on human T47D cells and following intravenous (i.v.) injection to rats, respectively. Stability against endopeptidases, rat serum and liver homogenates was assessed. There were linear and exponential relationships between conjugate MW with potency and efficacy respectively, however the largest MW conjugate still retained 70% of E …
Prostate Cancer Region Prediction Using Maldi Mass Spectra, Ayyappa Vadlamudi, Shao-Hui Chuang, Xiaoyan Sun, Lisa Cazares, Julius Nyalwidhe, Dean Troyer, O. John Semmes, Jiang Li, Frederic D. Mckenzie
Prostate Cancer Region Prediction Using Maldi Mass Spectra, Ayyappa Vadlamudi, Shao-Hui Chuang, Xiaoyan Sun, Lisa Cazares, Julius Nyalwidhe, Dean Troyer, O. John Semmes, Jiang Li, Frederic D. Mckenzie
Electrical & Computer Engineering Faculty Publications
For the early detection of prostate cancer, the analysis of the Prostate-specific antigen (PSA) in serum is currently the most popular approach. However, previous studies show that 15% of men have prostate cancer even their PSA concentrations are low. MALDI Mass Spectrometry (MS) proves to be a better technology to discover molecular tools for early cancer detection. The molecular tools or peptides are termed as biomarkers. Using MALDI MS data from prostate tissue samples, prostate cancer biomarkers can be identified by searching for molecular or molecular combination that can differentiate cancer tissue regions from normal ones. Cancer tissue regions are …
Adjacent Slice Prostate Cancer Prediction To Inform Maldi Imaging Biomarker Analysis, Shao-Hui Chuang, Xiaoyan Sun, Lisa Cazares, Julius Nyalwidhe, Dean Troyer, O. John Semmes, Jiang Li, Frederic D. Mckenzie, Nico Karssemeijer (Ed.), Ronald M. Summers (Ed.)
Adjacent Slice Prostate Cancer Prediction To Inform Maldi Imaging Biomarker Analysis, Shao-Hui Chuang, Xiaoyan Sun, Lisa Cazares, Julius Nyalwidhe, Dean Troyer, O. John Semmes, Jiang Li, Frederic D. Mckenzie, Nico Karssemeijer (Ed.), Ronald M. Summers (Ed.)
Electrical & Computer Engineering Faculty Publications
Prostate cancer is the second most common type of cancer among men in US [1]. Traditionally, prostate cancer diagnosis is made by the analysis of prostate-specific antigen (PSA) levels and histopathological images of biopsy samples under microscopes. Proteomic biomarkers can improve upon these methods. MALDI molecular spectra imaging is used to visualize protein/peptide concentrations across biopsy samples to search for biomarker candidates. Unfortunately, traditional processing methods require histopathological examination on one slice of a biopsy sample while the adjacent slice is subjected to the tissue destroying desorption and ionization processes of MALDI. The highest confidence tumor regions gained from the …
The Nonpsychoactive Cannabinoid Cannabidiol Inhibits 5-Hydroxytryptamine3a Receptor-Mediated Currents In Xenopus Laevis Oocytes, Keun-Hang Susan Yang, Sehamuddin Galadari, Dmytro Isaev, Georg Petroianu, Toni S. Shippenberg, Murat Oz
The Nonpsychoactive Cannabinoid Cannabidiol Inhibits 5-Hydroxytryptamine3a Receptor-Mediated Currents In Xenopus Laevis Oocytes, Keun-Hang Susan Yang, Sehamuddin Galadari, Dmytro Isaev, Georg Petroianu, Toni S. Shippenberg, Murat Oz
Mathematics, Physics, and Computer Science Faculty Articles and Research
The effect of the plant-derived nonpsychotropic cannabinoid, cannabidiol (CBD), on the function of hydroxytryptamine (5-HT)3A receptors expressed in Xenopus laevis oocytes was investigated using two-electrode voltage-clamp techniques. CBD reversibly inhibited 5-HT (1 μM)-evoked currents in a concentration-dependent manner (IC50 = 0.6 μM). CBD (1 μM) did not alter specific binding of the 5-HT3A antagonist [3H]3-(5-methyl-1H-imidazol-4-yl)-1-(1-methylindol-3-yl)propan-1-one (GR65630), in oocytes expressing 5-HT3A receptors. In the presence of 1 μM CBD, the maximal 5-HT-induced currents were also inhibited. The EC50 values were 1.2 and 1.4 μM, in the absence and presence of CBD, indicating that CBD acts as a noncompetitive antagonist of 5-HT3 …
Intravenous Artesunate For Severe Malaria, Karl M. Hess, Jeffery A. Goad, Paul M. Arguin
Intravenous Artesunate For Severe Malaria, Karl M. Hess, Jeffery A. Goad, Paul M. Arguin
Pharmacy Faculty Articles and Research
OBJECTIVE: To review the pharmacodynamics and pharmacotherapeutic use of intravenous artesunate for the treatment of severe malaria.
DATA SOURCES: Literature was retrieved through PubMed (1999 March 2010), MEDLINE (1996 March 2010), and the Centers for Disease Control and Prevention (CDC), using the search terms artemisinin, artesunate, malaria, and severe malaria. In addition, reference citations from publications identified were reviewed.
STUDY SELECTION AND DATA EXTRACTION: All articles in English that were identified from the data sources were reviewed. Focus was placed on post-marketing trials examining the safety and efficacy of artesunate in comparison with other regimens.
DATA SYNTHESIS …
Synthesis Of Nucleoside 5′-O-Α,Β-Methylene-Β-Triphosphates And Evaluation Of Their Potency Towards Inhibition Of Hiv-1 Reverse Transcriptase, Yousef Ahmadibeni, Chandravanu Dash, M. J. Hanley, S. F. J. Le Grice, Hitesh K. Agarwal, Keykavous Parang
Synthesis Of Nucleoside 5′-O-Α,Β-Methylene-Β-Triphosphates And Evaluation Of Their Potency Towards Inhibition Of Hiv-1 Reverse Transcriptase, Yousef Ahmadibeni, Chandravanu Dash, M. J. Hanley, S. F. J. Le Grice, Hitesh K. Agarwal, Keykavous Parang
Pharmacy Faculty Articles and Research
A polymer-bound α,β-methylene-β-triphosphitylating reagent was synthesized and subjected to reactions with unprotected nucleosides, followed by oxidation, deprotection of cyanoethoxy groups, and acidic cleavage to afford nucleoside 5′-O-α,β-methylene-β-triphosphates. Among all the compounds, cytidine 5′-O-α,β-methylene-β-triphosphate inhibited RNase H activity of HIV-1 reverse transcriptase with a Ki value of 225 μM.
Synthesis And Evaluation Of Conformationally Constrained Peptide Analogues As The Src Sh3 Domain Binding Ligands, Rakesh Tiwari, Alex Brown, Seetha Narramaneni, Gongqin Sun, Keykavous Parang
Synthesis And Evaluation Of Conformationally Constrained Peptide Analogues As The Src Sh3 Domain Binding Ligands, Rakesh Tiwari, Alex Brown, Seetha Narramaneni, Gongqin Sun, Keykavous Parang
Pharmacy Faculty Articles and Research
Src kinase activity is regulated by the interaction of SH3 domain with protein sequences that are rich in proline residues. Identification of more potent SH3 domain binding ligands that can regulate Src kinase activity is a subject of major interest. Conformationally constrained peptides have been previously used for improving the binding potency of the Src SH2 domain binding peptide ligands and peptide substrates of the substrate-binding site of Src. A series of peptide analogues of Ac-VSLARRPLPPLP (1, Ac-VSL-12, Kd = 0.34 M) were synthesized by introducing conformational constraints to improve the binding affinity towards the Src SH3 domain. Peptides synthesized …
Hcmv Pus28 Initiates Pro-Migratory Signaling Via Activation Of Pyk2 Kinase, Jennifer Totonchy, Susan Varnum, Ryan Melnychuk, Patricia Smith, Ljiliana Pasa-Tolic, Janani I. Shutthanadan, Daniel N. Streblow
Hcmv Pus28 Initiates Pro-Migratory Signaling Via Activation Of Pyk2 Kinase, Jennifer Totonchy, Susan Varnum, Ryan Melnychuk, Patricia Smith, Ljiliana Pasa-Tolic, Janani I. Shutthanadan, Daniel N. Streblow
Pharmacy Faculty Articles and Research
Background: Human Cytomegalovirus (HCMV) has been implicated in the acceleration of vascular disease and chronic allograft rejection. Recently, the virus has been associated with glioblastoma and other tumors. We have previously shown that the HCMV-encoded chemokine receptor pUS28 mediates smooth muscle cell (SMC) and macrophage motility and this activity has been implicated in the acceleration of vascular disease. pUS28 induced SMC migration involves the activation of the protein tyrosine kinases (PTKs) Src and Focal adhesion kinase as well as the small GTPase RhoA. The PTK Pyk2 has been shown to play a role in cellular migration and formation of cancer, …
Effect Of The Tyrosine Kinase Inhibitors (Sunitinib, Sorafenib, Dasatinib, And Imatinib) On Blood Glucose Levels In Diabetic And Non-Diabetic Patients In General Clinical Practice (Poster), Nicole M. Agostino Do, Vernon M. Chinchilli Phd, Christopher J. Lynch Phd, Anita M. Koszyk-Szewczyk Md, Rebecca Gingrich Rn, Ms, Ocn, Jeffery Sivik D Pharma, Joseph J. Darbick Md, Facp
Effect Of The Tyrosine Kinase Inhibitors (Sunitinib, Sorafenib, Dasatinib, And Imatinib) On Blood Glucose Levels In Diabetic And Non-Diabetic Patients In General Clinical Practice (Poster), Nicole M. Agostino Do, Vernon M. Chinchilli Phd, Christopher J. Lynch Phd, Anita M. Koszyk-Szewczyk Md, Rebecca Gingrich Rn, Ms, Ocn, Jeffery Sivik D Pharma, Joseph J. Darbick Md, Facp
Department of Medicine
No abstract provided.
Pharmacology Supplement, Ahmed Mustafa, Ellioott Blumenthal
Pharmacology Supplement, Ahmed Mustafa, Ellioott Blumenthal
Ahmed Mustafa Dr.
No abstract provided.
Mercury And Autism: A Review, Jie Zhang, John J. Wheeler