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https://www.readbyqxmd.com/read/28720468/production-of-a-chikungunya-vaccine-using-a-cho-cell-and-attenuated-viral-based-platform-technology
#1
Preethi Eldi, Tamara H Cooper, Liang Liu, Natalie A Prow, Kerrilyn R Diener, Paul M Howley, Andreas Suhrbier, John D Hayball
Vaccinia-based systems have been extensively explored for the development of recombinant vaccines. Herein we describe an innovative vaccinia virus (VACV)-derived vaccine platform technology termed Sementis Copenhagen Vector (SCV), which was rendered multiplication-defective by targeted deletion of the essential viral assembly gene D13L. A SCV cell substrate line was developed for SCV vaccine production by engineering CHO cells to express D13 and the VACV host-range factor CP77, because CHO cells are routinely used for manufacture of biologics...
July 15, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28637387/immunopathology-of-chikungunya-virus-infection-lessons-learned-from-patients-and-animal-models
#2
Lisa F P Ng
Chikungunya virus (CHIKV) is an arthropod-borne alphavirus that causes acute and chronic arthritis. The virus reemerged in the Indian Ocean islands in 2005-2006 and is responsible for outbreaks in the Caribbean islands and the Americas since late 2013. Despite the wealth of research over the past 10 years, there are no commercially available antiviral drugs or vaccines. Treatment usually involves analgesics, anti-inflammatory drugs, and supportive care. Most studies have been focused on understanding the pathogenesis of CHIKV infection through clinical observation and with animal models...
June 21, 2017: Annual Review of Virology
https://www.readbyqxmd.com/read/28459170/clinical-features-and-neurologic-complications-of-children-hospitalized-with-chikungunya-virus-in-honduras
#3
José A Samra, Nancy L Hagood, Andrea Summer, Marco T Medina, Kenton R Holden
The first case of Chikungunya virus in Honduras was identified in 2014. The virus has spread widely across Honduras via the Aedes aegypti mosquito, leading to an outbreak of Chikungunya virus (CHIKV) in 2015 that significantly impacted children. A retrospective chart review of 235 children diagnosed with CHIKV and admitted to the National Autonomous University of Honduras Hospital Escuela (Hospital Escuela) in Tegucigalpa, Honduras, was accomplished with patients who were assessed for clinical features and neurologic complications...
July 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28414993/chikungunya-virus-infections-time-to-act-time-to-treat
#4
REVIEW
Rana Abdelnabi, Johan Neyts, Leen Delang
Chikungunya virus (CHIKV) is a re-emerging alphavirus that caused massive outbreaks of Chikungunya fever in several countries and regions in Africa, Asia and more recently in Central and South America. An acute CHIKV infection is usually associated with fever and arthritis and it is rarely fatal. However, 15-60% of patients suffer from chronic polyarthralgia for weeks, months or even for several years after the acute infection. There are currently no vaccines or antivirals available for the prevention or treatment of CHIKV infections...
April 14, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28408930/a-case-of-initially-undiagnosed-chikungunya-arthritis-developing-into-chronic-phase-in-a-nonendemic-area
#5
Pui Shan Julia Chan, Moon Ho Leung
This case report described a 40-year-old lady presented with fever, headache, arthralgia, myalgia, and impaired liver function after returning from the Philippines. Chikungunya virus (CHIKV) and dengue serology were negative. Eight weeks after initial presentation, she experienced inflammatory polyarthritis mimic rheumatoid arthritis. This time CHIKV-IgM was detected, together with a >4-fold rise of CHIKV-polyvalent-antibody titre. The first CHIKV-IgM negative sample was reexamined and was CHIKV-PCR positive...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28376065/chikungunya-virus-and-autoimmunity
#6
Amir Tanay
PURPOSE OF REVIEW: Chikungunya virus (CHIKV) is a mosquito-borne alphavirus. Fever, rash and severe arthralgia are the hallmarks of chikungunya fever (CHIKF), the disease caused by this virus. The acute course of the disease usually lasts few weeks to months. Chronic, relapsing or persistent arthralgia and arthritis have been described mimicking rheumatoid arthritis (RA), requiring immunosuppressive drugs.The purpose of this review is to characterize both the chronic clinical course of CHIKF-associated arthritis and the immunological pathogenic mechanisms involved...
July 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/28365217/tropical-arthritogenic-alphaviruses
#7
Carla-Ruth Mejía, Rogelio López-Vélez
Tropical alphaviruses have special tropism for bone and joint tissue. Patients can develop chronic rheumatic disorders similar to rheumatoid arthritis and ankylosing spondylitis. The prototype is Chikungunya virus, although other lesser known viruses in our environment such as Sindbis, Ross River, Mayaro, O'nyong nyong and Barmah Forest viruses have the potential to be sped through vectors and cause chronic rheumatic disease. International population movements have increased the numbers of patients diagnosed with these tropical viruses in areas in which they are not endemic...
March 29, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/28348794/zika-and-chikungunya-virus-co-infection-in-a-traveller-returning-from-colombia-2016-virus-isolation-and-genetic-analysis
#8
Kartikeya Cherabuddi, Nicole M Iovine, Kairav Shah, Sarah K White, Taylor Paisie, Marco Salemi, J Glenn Morris, John A Lednicky
INTRODUCTION: Zikavirus (ZIKV) and Chikungunyavirus (CHIKV) can share the same mosquito vector, and co-infections by these viruses can occur in humans. While infections with these viruses share commonalities, CHIKV is unique in causing arthritis and arthralgias that may persist for a year or more. These infections are commonly diagnosed by RT-PCR-based methods during the acute phase of infection. Even with the high specificity and sensitivity characteristic of PCR, false negatives can occur, highlighting the need for additional diagnostic methods for confirmation...
December 2016: JMM Case Reports
https://www.readbyqxmd.com/read/28238882/rheumatic-manifestations-associated-with-chikungunya-virus-infection-a-study-of-307-patients-with-32-month-follow-up-rhumatochik-study
#9
Eric Bouquillard, Adrian Fianu, Marianne Bangil, Nathalie Charlette, Anne Ribéra, Alain Michault, François Favier, Fabrice Simon, René-Marc Flipo
OBJECTIVES: In the wake of the Chikungunya epidemic which struck Reunion Island in 2005 and 2006, we conducted a prospective, multicentre study (RHUMATOCHIK) whose main objective was analyse the characteristics and progression of rheumatic manifestations in patients with post-Chikungunya joint pain. METHODS: A cohort of 307 consecutively included patients underwent rheumatological examinations for pain secondary to Chikungunya virus infection. The long-term evaluation was conducted by telephone survey 1 and 2 years after the onset of the viral infection...
February 24, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28213049/impaired-nk-cell-functionality-and-increased-tnf-%C3%AE-production-as-biomarkers-of-chronic-chikungunya-arthritis-and-rheumatoid-arthritis
#10
Subrat Thanapati, Mohini Ganu, Prashant Giri, Shruti Kulkarni, Meenal Sharma, Prasad Babar, Ashok Ganu, Anuradha S Tripathy
The chronic chikungunya arthritis symptoms closely mimic the rheumatoid arthritis (RA) symptoms, thus making it difficult to distinguish between these two clinical entities. The current comparative study characterizes NK (CD3(-)CD56(+)) and NK-like T (CD3(+)CD56(+)) cell responses in patients with chronic chikungunya arthritis and RA. Phenotype and functions of NK and NK-like T cells repertoire were assessed in 56 chronic chikungunya arthritis, 26 RA patients and 82 controls using flow cytometry. TNF-α and IFN-γ-secreting NK-like T cells were high in both chronic arthritis patients than in controls...
April 2017: Human Immunology
https://www.readbyqxmd.com/read/28207896/rna-seq-analysis-of-chikungunya-virus-infection-and-identification-of-granzyme-a-as-a-major-promoter-of-arthritic-inflammation
#11
Jane A C Wilson, Natalie A Prow, Wayne A Schroder, Jonathan J Ellis, Helen E Cumming, Linden J Gearing, Yee Suan Poo, Adam Taylor, Paul J Hertzog, Francesca Di Giallonardo, Linda Hueston, Roger Le Grand, Bing Tang, Thuy T Le, Joy Gardner, Suresh Mahalingam, Pierre Roques, Phillip I Bird, Andreas Suhrbier
Chikungunya virus (CHIKV) is an arthritogenic alphavirus causing epidemics of acute and chronic arthritic disease. Herein we describe a comprehensive RNA-Seq analysis of feet and lymph nodes at peak viraemia (day 2 post infection), acute arthritis (day 7) and chronic disease (day 30) in the CHIKV adult wild-type mouse model. Genes previously shown to be up-regulated in CHIKV patients were also up-regulated in the mouse model. CHIKV sequence information was also obtained with up to ≈8% of the reads mapping to the viral genome; however, no adaptive viral genome changes were apparent...
February 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28202915/acute-inflammatory-arthritis-potential-therapies-for-chikungunya-arthritis
#12
Jessica McHugh
No abstract text is available yet for this article.
April 2017: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/28174282/papers-of-note-in-science-translational-medicine-9-375
#13
Leslie K Ferrarelli
This week's articles describe ways to treat arthritis caused by chikungunya virus, IDH-mutant cancers, and hypertension.
February 7, 2017: Science Signaling
https://www.readbyqxmd.com/read/28163198/long-term-sequelae-of-chikungunya-virus-disease-a-systematic-review
#14
REVIEW
Mariëlle van Aalst, Charlotte Marieke Nelen, Abraham Goorhuis, Cornelis Stijnis, Martin Peter Grobusch
BACKGROUND: The acute phase of chikungunya is well documented; less so are its long-term effects. This systematic literature review provides an overview of the currently available data. METHODS: We performed an electronic search in PubMed/Medline and checked reference lists. We included studies in English on long-term sequelae of chikungunya in adults and on long-term sequelae of congenital infection from 2000 to 2016. Case reports, reviews and studies with a follow-up shorter than 6 weeks were excluded...
January 2017: Travel Medicine and Infectious Disease
https://www.readbyqxmd.com/read/28148840/therapy-with-ctla4-ig-and-an-antiviral-monoclonal-antibody-controls-chikungunya-virus-arthritis
#15
Jonathan J Miner, Lindsey E Cook, Jun P Hong, Amber M Smith, Justin M Richner, Raeann M Shimak, Alissa R Young, Kristen Monte, Subhajit Poddar, James E Crowe, Deborah J Lenschow, Michael S Diamond
In 2013, chikungunya virus (CHIKV) transmission was documented in the Western Hemisphere, and the virus has since spread throughout the Americas with more than 1.8 million people infected in more than 40 countries. CHIKV targets the joints, resulting in symmetric polyarthritis that clinically mimics rheumatoid arthritis and can endure for months to years. At present, no approved treatment is effective in preventing or controlling CHIKV infection or disease. We treated mice with eight different disease-modifying antirheumatic drugs and identified CLTA4-Ig (abatacept) and tofacitinib as candidate therapies based on their ability to decrease acute joint swelling...
February 1, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28143925/adp-ribosylhydrolase-activity-of-chikungunya-virus-macrodomain-is-critical-for-virus-replication-and-virulence
#16
Robert Lyle McPherson, Rachy Abraham, Easwaran Sreekumar, Shao-En Ong, Shang-Jung Cheng, Victoria K Baxter, Hans A V Kistemaker, Dmitri V Filippov, Diane E Griffin, Anthony K L Leung
Chikungunya virus (CHIKV), an Old World alphavirus, is transmitted to humans by infected mosquitoes and causes acute rash and arthritis, occasionally complicated by neurologic disease and chronic arthritis. One determinant of alphavirus virulence is nonstructural protein 3 (nsP3) that contains a highly conserved MacroD-type macrodomain at the N terminus, but the roles of nsP3 and the macrodomain in virulence have not been defined. Macrodomain is a conserved protein fold found in several plus-strand RNA viruses that binds to the small molecule ADP-ribose...
February 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28138049/clinical-manifestations-associated-with-peripheral-joint-involvement-in-patients-with-acute-chikungunya-virus-infection
#17
Mariangelí Arroyo-Ávila, Amanda Cabán, Enid J García-Rivera, Marisela Irizarry-Pérez, Hilda Torres, Héctor Gorbea, Luis M Vilá
AbstractChikungunya virus (CHIKV) causes an acute febrile illness usually accompanied by severe polyarthralgia and polyarthritis. Previous studies have shown that older age, female gender, and some comorbid conditions are associated with chronic CHIKV arthritis. However, the factors associated with acute arthralgia and arthritis are not well known. Thus, we studied the clinical manifestations associated with acute peripheral joint involvement in a group of CHIKV patients from Puerto Rico. Patients with a history of fever for < 7 days evaluated at the emergency department of a university-based hospital were tested for several pathogens including CHIKV...
April 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28114368/identification-of-functional-determinants-in-the-chikungunya-virus-e2-protein
#18
Christopher Weber, Eva Berberich, Christine von Rhein, Lisa Henß, Eberhard Hildt, Barbara S Schnierle
BACKGROUND: Chikungunya virus (CHIKV) is a mosquito-transmitted alphavirus that causes high fever, rash, and recurrent arthritis in humans. It has efficiently adapted to Aedes albopictus, which also inhabits temperate regions, including Europe and the United States of America. In the past, CHIKV has mainly affected developing countries, but has recently caused large outbreaks in the Caribbean and Latin America. No treatment or licensed CHIKV vaccine exists. METHODOLOGY/PRINCIPAL FINDINGS: Here, we have identified determinants in the CHIKV cell-attachment protein E2 that facilitate cell binding...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28001232/a-case-of-chikungunya-virus-disease-presenting-with-remarkable-acute-arthritis-of-a-previously-damaged-finger-joint
#19
Walter de Araujo Eyer-Silva, Henrique de Barros Pinto, Guilherme Almeida Rosa da Silva, Fernando Raphael de Almeida Ferry
Chikungunya virus (CHIKV) is a mosquito-borne arthritogenic alphavirus that has recently been introduced to Brazil. We report the case of a 36-year-old male patient from the City of Rio de Janeiro who developed molecularly-confirmed CHIKV disease and whose clinical picture was remarkable because of acute arthritis of an interphalangeal joint that had been damaged by trauma 8 years previously. This case illustrates that acute CHIKV disease may preferentially target previously damaged joints. Careful study of individual cases may provide valuable information on the presentation and management of this emerging zoonosis in Brazil...
November 2016: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/27920171/chikungunya-pathogenesis-from-the-clinics-to-the-bench
#20
Philippe Gasque, Marie Christine Jaffar Bandjee, Marcela Mercado Reyes, Diego Viasus
Chikungunya alphavirus has caused large epidemics worldwide and leads to acute incapacitating polyarthralgia. The inflammatory reaction over several days will drive robust innate and humoral responses essential to control the infection. Critically, fatal cases and mother-to-child transmission have also been described. Chikungunya can give rise to chronic musculoskeletal diseases, which can last for months to years, particularly in elderly individuals, and occasionally leads to seronegative rheumatoid arthritis-like pathologies...
December 15, 2016: Journal of Infectious Diseases
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