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ANTIVIRAL DRUGS

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https://www.readbyqxmd.com/read/27913223/hepatitis-e-virus-infection-beyond-the-liver
#1
REVIEW
S Pischke, J Hartl, S D Pas, A W Lohse, B C Jacobs, A A van der Eijk
Hepatitis E virus (HEV) infections are not limited to the liver but may also affect other organs. Several diseases, including Guillain-Barré syndrome, neuralgic amyotrophy, glomerulonephritis, cryoglobulinemia, pancreatitis, lymphoma, thrombopenia, meningitis, thyreoiditis and myocarditis have been observed in the context of hepatitis E. To date the definite pathophysiological links between HEV and extrahepatic manifestations are not yet established. However, it is suggested that HEV-infection might be causative based on serological studies, case series, in vitro data and animal models...
November 29, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/27911724/control-of-hiv-1-gene-expression-by-sr-proteins
#2
REVIEW
Charlotte Mahiet, Chad M Swanson
Cellular proteins are required for all steps of human immunodeficiency virus type 1 (HIV-1) gene expression including transcription, splicing, 3'-end formation/polyadenylation, nuclear export and translation. SR proteins are a family of cellular RNA-binding proteins that regulate and functionally integrate multiple steps of gene expression. Specific SR proteins are best characterised for regulating HIV-1 RNA splicing by binding specific locations in the viral RNA, though recently they have also been shown to control transcription, 3'-end formation, and translation...
October 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27911718/attacking-hiv-1-rna-versus-dna-by-sequence-specific-approaches-rnai-versus-crispr-cas
#3
REVIEW
Elena Herrera-Carrillo, Ben Berkhout
Human immunodeficiency virus type 1 (HIV-1) infection can be effectively controlled by potent antiviral drugs, but this never results in a cure. The patient should therefore take these drugs for the rest of his/her life, which can cause drug-resistance and adverse effects. Therefore, more durable therapeutic strategies should be considered, such as a stable gene therapy to protect the target T cells against HIV-1 infection. The development of potent therapeutic regimens based on the RNA interference (RNAi) and clustered regularly interspaced short palindromic repeats (CRISPR-Cas) mechanisms will be described, which can be delivered by lentiviral vectors...
October 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27911430/-clinical-presentations-of-herpes-zoster-ophthalmicus-diagnosis-and-therapy
#4
G M Chernakova, E A Kleshcheva, T B Semenova
: Approximately a quarter of the world's population at some point in life is at risk of developing shingles (Herpes Zoster). In 10-20% of cases the first branch of the trigeminal nerve gets involved (Herpes Zoster Ophthalmicus, HZO). Ophthalmic complications of HZO are able to cause a significant reduction in visual function. AIM: To study and summarize clinical features of HZO (including the rate of complications and their nature) and to determine the relationship between clinical and laboratory data from these patients...
2016: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/27911112/treatment-of-alpha-and-beta-herpesvirus-infections-in-solid-organ-transplant-recipients
#5
C L Abad, R R Razonable
Human herpesviruses frequently cause infections in solid organ transplant (SOT) recipients. Areas covered: We provide an overview of the clinical impact of alpha and beta herpesviruses and highlight the mechanisms of action, pharmacokinetics, clinical indications, and adverse effects of antiviral drugs for the management of herpes simplex virus, varicella zoster virus and cytomegalovirus. We comprehensively evaluated key clinical trials that led to drug approval, and served as the foundation for management guidelines...
December 2, 2016: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/27910749/role-of-toll-like-receptors-in-hepatitis-c-virus-pathogenesis-and-treatment
#6
Usman Ali Ashfaq, Muhammad Sarfaraz Iqbal, Saba Khaliq
Viral infections are rising every day, and viruses appear to be the most dangerous pathogens in the world. Hepatitis C virus (HCV) is accepted as one of the major destructive factors of promoting severe hepatic disorders by infecting more than 180 million individuals throughout the world. Chronic infection caused by HCV poses a serious global health emergency and appears to be a powerful threat to humanity. Almost 20 years have passed since the disclosure of HCV, but even now, treatment preferences remain limited...
2016: Critical Reviews in Eukaryotic Gene Expression
https://www.readbyqxmd.com/read/27909576/zika-antiviral-chemotherapy-identification-of-drugs-and-promising-starting-points-for-drug-discovery-from-an-fda-approved-library
#7
Bruno S Pascoalino, Gilles Courtemanche, Marli T Cordeiro, Laura H V G Gil, Lucio Freitas-Junior
Background The recent epidemics of Zika virus (ZIKV) implicated it as the cause of serious and potentially lethal congenital conditions such microcephaly and other central nervous system defects, as well as the development of the Guillain-Barré syndrome in otherwise healthy patients. Recent findings showed that anti-Dengue antibodies are capable of amplifying ZIKV infection by a mechanism similar to antibody-dependent enhancement, increasing the severity of the disease. This scenario becomes potentially catastrophic when the global burden of Dengue and the advent of the newly approved anti-Dengue vaccines in the near future are taken into account...
2016: F1000Research
https://www.readbyqxmd.com/read/27906000/the-antiviral-compound-bit225-inhibits-hiv-1-replication-in-myeloid-dendritic-cells
#8
Gabriela Khoury, Gary Ewart, Carolyn Luscombe, Michelle Miller, John Wilkinson
BACKGROUND: Previous studies with BIT225 (N-carbamimidoyl-5-(1-methyl-1H-pyrazol-4-yl)-2-naphthamide) have demonstrated a unique antiviral activity that blocks the release of HIV-1 from monocyte-derived macrophages (MDM). Antagonising the ion channel formed by HIV-1 Vpu, BIT225 preferentially targets de novo intracellular virus produced in 'virus-containing compartments' of MDM. In primary infections, dendritic cells (DC) are one of the first cells infected by HIV-1 and can transfer virus to more permissive CD4(+) T cells, making these cells an important target for novel antiviral therapies...
February 8, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27905985/tlr7-8-agonist-induces-a-post-entry-samhd1-independent-block-to-hiv-1-infection-of-monocytes
#9
Henning Hofmann, Bénédicte Vanwalscappel, Nicolin Bloch, Nathaniel R Landau
BACKGROUND: Monocytes, the primary myeloid cell-type in peripheral blood, are resistant to HIV-1 infection as a result of the lentiviral restriction factor SAMHD1. Toll-like receptors recognize microbial pathogen components, inducing the expression of antiviral host proteins and proinflammatory cytokines. TLR agonists that mimic microbial ligands have been found to have activity against HIV-1 in macrophages. The induction of restriction factors in monocytes by TLR agonist activation has not been well studied...
December 1, 2016: Retrovirology
https://www.readbyqxmd.com/read/27905579/selective-tsuji-trost-type-c-allylation-of-hydrazones-a-straightforward-entry-into-4-5-dihydropyrazoles
#10
El Hachemia El Mamouni, Martin Cattoen, Marie Cordier, Janine Cossy, Stellios Arseniyadis, Hocine Ilitki, Laurent El Kaïm
The 4,5-dihydropyrazole motif has drawn considerable attention over the years as it was shown to exhibit a plethora of biological and pharmacological properties, including anticancer, antibacterial, antifungal, antiviral, and anti-inflammatory properties. As such, it has been the target of a number of methods and drug discovery programs. We report here a straightforward and highly selective approach featuring a key palladium-catalysed Tsuji-Trost type C-allylation and subsequent intramolecular 1,4-addition of hydrazones...
December 1, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27905101/a-review-on-antiviral-activity-of-the-himalayan-medicinal-plants-traditionally-used-to-treat-bronchitis-and-related-symptoms
#11
REVIEW
Rahila Amber, Muhammad Adnan, Akash Tariq, Sakina Mussarat
OBJECTIVES: Bronchitis is a common respiratory tract infection of humans mainly caused by influenza virus, rhinovirus, adenovirus, coronavirus and respiratory syncytial virus. The aim of this review was to gather fragmented literature on ethnomedicinal plants used against bronchitis in the Himalayan region and their in-vitro validation against bronchitis causing viral pathogens. KEY FINDINGS: Present review contains ethnomedicines of total 55 plants from different countries of the Himalayas...
December 1, 2016: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/27903231/new-analogues-of-mycophenolic-acid
#12
Agnieszka Głowacka, Michal Prejs, Grzegorz Cholewinski, Krystyna Dzierzbicka
Mycophenolic acid (MPA) possesses antibacterial, antifungal, antiviral, immunosuppressive and anticancer properties. It is a non-competitive and reversible inhibitor of dehydrogenase inosine-5'-monophosphate (IMPDH) [1,2]. This compound belongs to the immunosuppressive drugs used for the prevention of both acute and chronic transplant rejection [3]. Until now clinically have been used two derivatives of MPA: mycophenolate mofetil (MMF, CellCept) and mycophenolate sodium (MPS, Myfortic). They cause, similar to MPA, although at lower degree, the side effects such as vomiting, abdominal pain, diarrhea, nausea, gastrointestinal, urogenital tract, blood or nervous system disorders...
November 29, 2016: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/27903217/rational-drug-discovery-of-hcv-helicase-inhibitor-improved-docking-accuracy-with-multiple-seedings-of-autodock-vina-and-in-situ-minimization
#13
SeeKhai Lim, Rozana Othman, Rohana Yusof, ChoonHan Heh
BACKGROUND: Hepatitis C is a significant cause for end-stage liver diseases and liver transplantation which affects approximate 3% of the global populations. Despite the present of several direct antiviral agents in the treatment of hepatitis C, the standard treatment for HCV is accompanied by several drawbacks such as adverse side effects, high pricing of medications and the rapid emerging rate of resistant HCV variants. OBJECTIVES: To discover potential inhibitors for HCV helicase through an optimized in silico approach...
November 30, 2016: Current Computer-aided Drug Design
https://www.readbyqxmd.com/read/27902933/the-fda-approved-drug-sofosbuvir-inhibits-zika-virus-infection
#14
Kristen M Bullard-Feibelman, Jennifer Govero, Zhe Zhu, Vanessa Salazar, Milena Veselinovic, Michael S Diamond, Brian J Geiss
The rapidly expanding Zika virus (ZIKV) epidemic has affected thousands of individuals with severe cases causing Guillain-Barré syndrome, congenital malformations, and microcephaly. Currently, there is no available vaccine or therapy to prevent or treat ZIKV infection. We evaluated whether sofosbuvir, an FDA-approved nucleotide polymerase inhibitor for the distantly related hepatitis C virus, could have antiviral activity against ZIKV infection. Cell culture studies established that sofosbuvir efficiently inhibits replication and infection of several ZIKV strains in multiple human tumor cell lines and isolated human fetal-derived neuronal stem cells...
November 27, 2016: Antiviral Research
https://www.readbyqxmd.com/read/27902849/oral-antivirals-for-preventing-recurrent-herpes-simplex-keratitis-in-people-with-corneal-grafts
#15
REVIEW
Uday K Bhatt, M N Abdul Karim, Jeremy I Prydal, Senthil V Maharajan, Usama Fares
BACKGROUND: Ocular herpes is a viral infection of the eye caused by the herpes simplex virus (HSV), a double-stranded DNA virus. Corneal scarring caused by herpes simplex keratitis (HSK) is the leading infectious cause of penetrating corneal graft in high-income countries. Acyclovir is an antiviral drug known to have a protective effect against recurrences in herpetic eye disease. While there are some studies which have evaluated the effects of intervention with oral antiviral in preventing such recurrences in people with corneal grafts, a systematic review of all comparative clinical trials has not been previously undertaken...
November 30, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27902714/evaluation-of-the-activity-of-lamivudine-and-zidovudine-against-ebola-virus
#16
Yu Cong, Julie Dyall, Brit J Hart, Lisa Evans DeWald, Joshua C Johnson, Elena Postnikova, Huanying Zhou, Robin Gross, Oscar Rojas, Isis Alexander, Nicole Josleyn, Tengfei Zhang, Julia Michelotti, Krisztina Janosko, Pamela J Glass, Mike Flint, Laura K McMullan, Christina F Spiropoulou, Tim Mierzwa, Rajarshi Guha, Paul Shinn, Sam Michael, Carleen Klumpp-Thomas, Crystal McKnight, Craig Thomas, Ann E Eakin, Kathleen G O'Loughlin, Carol E Green, Paul Catz, Jon C Mirsalis, Anna N Honko, Gene G Olinger, Richard S Bennett, Michael R Holbrook, Lisa E Hensley, Peter B Jahrling
In the fall of 2014, an international news agency reported that patients suffering from Ebola virus disease (EVD) in Liberia were treated successfully with lamivudine, an antiviral drug used to treat human immunodeficiency virus-1 and hepatitis B virus infections. According to the report, 13 out of 15 patients treated with lamivudine survived and were declared free from Ebola virus disease. In this study, the anti-Ebola virus (EBOV) activity of lamivudine and another antiretroviral, zidovudine, were evaluated in a diverse set of cell lines against two variants of wild-type EBOV...
2016: PloS One
https://www.readbyqxmd.com/read/27900665/use-of-capillary-electrophoresis-to-study-the-binding-interaction-of-aptamers-with-wild-type-k103n-and-double-mutant-k103n-y181c-hiv-1-rt-studying-the-binding-interaction-of-wild-type-k103n-and-double-mutant-k103n-y181c-hiv-1-rt-with-aptamers-by-performing
#17
Niran Aeksiri, Chompunuch Warakulwit, Supa Hannongbua, Sasimanas Unajak, Kiattawee Choowongkomon
A number of nucleic acid aptamers with high affinities to human immunodeficiency virus reverse transcriptase (HIV-1 RT) are currently known. They can potentially be developed as broad-spectrum antiviral drugs, but there is little known about their binding interaction with mutant HIV-1 RT. Therefore, we utilized non-equilibrium capillary electrophoresis of equilibrium mixture (NECEEM) to study the interaction of three HIV-1 RTs (wild type, K103N, and double mutant (K103N/Y181C)) with RT1t49 and RT12 aptamers...
November 30, 2016: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27900346/preclinical-development-and-qualification-of-zfn-mediated-ccr5-disruption-in-human-hematopoietic-stem-progenitor-cells
#18
David L DiGiusto, Paula M Cannon, Michael C Holmes, Lijing Li, Anitha Rao, Jianbin Wang, Gary Lee, Philip D Gregory, Kenneth A Kim, Samuel B Hayward, Kathleen Meyer, Colin Exline, Evan Lopez, Jill Henley, Nancy Gonzalez, Victoria Bedell, Rodica Stan, John A Zaia
Gene therapy for HIV-1 infection is a promising alternative to lifelong combination antiviral drug treatment. Chemokine receptor 5 (CCR5) is the coreceptor required for R5-tropic HIV-1 infection of human cells. Deletion of CCR5 renders cells resistant to R5-tropic HIV-1 infection, and the potential for cure has been shown through allogeneic stem cell transplantation with naturally occurring homozygous deletion of CCR5 in donor hematopoietic stem/progenitor cells (HSPC). The requirement for HLA-matched HSPC bearing homozygous CCR5 deletions prohibits widespread application of this approach...
2016: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/27899038/the-role-of-the-nxtag%C3%A2-respiratory-pathogen-panel-assay-and-other-multiplex-platforms-in-clinical-practice
#19
Susanna Esposito, Nicola Principi
The advent of nucleic acid amplification tests has significantly improved the aetiologic diagnosis of respiratory infections. However, multiplex real-time polymerase chain reaction (PCR) can be technologically challenging. Areas covered: This paper reports the results of the main published studies on the NxTAG Respiratory Pathogen Panel (RPP) and discusses the advantages and disadvantages of extensive use of multiplex assays in clinical practice. Expert commentary: Currently available data seem to indicate that routine use of multiplex assays, including NxTAG RPP Assay, should be recommended only when epidemiological data concerning circulation of viruses and bacteria have to be collected...
November 30, 2016: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/27898041/ribosome-inactivating-proteins-from-plants-a-historical-overview
#20
REVIEW
Andrea Bolognesi, Massimo Bortolotti, Stefania Maiello, Maria Giulia Battelli, Letizia Polito
This review provides a historical overview of the research on plant ribosome-inactivating proteins (RIPs), starting from the first studies at the end of eighteenth century involving the purification of abrin and ricin, as well as the immunological experiments of Paul Erlich. Interest in these plant toxins was revived in 1970 by the observation of their anticancer activity, which has given rise to a large amount of research contributing to the development of various scientific fields. Biochemistry analyses succeeded in identifying the enzymatic activity of RIPs and allowed for a better understanding of the ribosomal machinery...
November 26, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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