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feline immunodeficiency virus

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https://www.readbyqxmd.com/read/28987024/urban-landscapes-can-change-virus-gene-flow-and-evolution-in-a-fragmentation-sensitive-carnivore
#1
Nicholas M Fountain-Jones, Meggan E Craft, W Chris Funk, Chris Kozakiewicz, Daryl Trumbo, Erin E Boydston, Lisa M Lyren, Kevin Crooks, Justin S Lee, Sue VandeWoude, Scott Carver
Urban expansion has widespread impacts on wildlife species globally, including the transmission and emergence of infectious diseases. However, there is almost no information about how urban landscapes shape transmission dynamics in wildlife. Using an innovative phylodynamic approach combining host and pathogen molecular data with landscape characteristics and host traits, we untangle the complex factors that drive transmission networks of Feline Immunodeficiency Virus (FIV) in bobcats (Lynx rufus). We found that the urban landscape played a significant role in shaping FIV transmission...
October 7, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28963205/first-nearly-complete-genome-sequence-of-feline-immunodeficiency-virus-from-brazil
#2
Sueli A Taniwaki, João P Araújo, Paulo E Brandão
Feline immunodeficiency virus (FIV) has worldwide distribution; nevertheless, only a few FIV genomes from domestic cats are available. This is the first report of a nearly complete genome of FIV from a Brazilian cat (8,967 nucleotides [nt]), including the entire coding region and the 3' untranslated region.
September 28, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28957693/interferon-omega-current-status-in-clinical-applications
#3
REVIEW
Shi-Fang Li, Fu-Rong Zhao, Jun-Jun Shao, Yin-Li Xie, Hui-Yun Chang, Yong-Guang Zhang
Since 1985, interferon (IFN)-ω, a type I IFN, has been identified in many animals, but not canines and mice. It has been demonstrated to have antiviral, anti-proliferation, and antitumor activities that are similar to those of IFN-α. To date, IFN-ω has been explored as a treatment option for some diseases or viral infections in humans and other animals. Studies have revealed that human IFN-ω displays antitumor activities in some models of human cancer cells and that it can be used to diagnose some diseases...
September 25, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28955476/periaortic-lymphoma-in-a-cat
#4
Laura Bree, Chiara Bergamino, Ronan Mullins, Pamela Kelly, Robert Shiel
CASE SUMMARY: A 14-year-old neutered male Siamese cat was presented with a 3 month history of lethargy, inappetence, dehydration, hindlimb ataxia and intermittent proprioceptive deficits in the hindlimbs. Physical examination revealed low body condition score (1.75/5), pallor and bilateral basilar grade II/VI systolic heart murmur. Neurological examination revealed hindlimb ataxia, severe atrophy of the hindlimb musculature, intermittent hindlimb proprioceptive deficits and normoreflexia...
July 2017: JFMS open reports
https://www.readbyqxmd.com/read/28934316/pathogenesis-of-oral-fiv-infection
#5
Craig Miller, Karen Boegler, Scott Carver, Martha MacMillan, Helle Bielefeldt-Ohmann, Sue VandeWoude
Feline immunodeficiency virus (FIV) is the feline analogue of human immunodeficiency virus (HIV) and features many hallmarks of HIV infection and pathogenesis, including the development of concurrent oral lesions. While HIV is typically transmitted via parenteral transmucosal contact, recent studies prove that oral transmission can occur, and that saliva from infected individuals contains significant amounts of HIV RNA and DNA. While it is accepted that FIV is primarily transmitted by biting, few studies have evaluated FIV oral infection kinetics and transmission mechanisms over the last 20 years...
2017: PloS One
https://www.readbyqxmd.com/read/28919546/phylodynamics-of-the-brazilian-feline-immunodeficiency-virus
#6
Lucía Cano-Ortiz, Dennis Maletich Junqueira, Juliana Comerlato, Cristina Santos Costa, André Zani, Naila Blatt Duda, Caroline Tochetto, Raissa Nunes Dos Santos, Fernanda Vieira Amorim da Costa, Paulo Michel Roehe, Ana Cláudia Franco
Feline immunodeficiency virus (FIV), like other retroviruses, displays large genomic divergence when different isolates are compared. In this study, 31 FIV positive samples of domestic cats from Porto Alegre, RS, Brazil were used aiming at a detailed genomic characterization and a better understanding of the molecular epidemiology of the virus in Brazil. The proviral env genes were partially amplified, sequenced and compared with another 237 sequences from different continents. We identified several Brazilian highly supported clades (A, B1, B2, C and D) that suggest independent events of introduction of FIV in Brazil...
September 13, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28918382/prevalence-of-and-risk-factors-for-fiv-and-felv-infection-in-two-shelters-in-the-united-kingdom-2011-2012
#7
Jenny Stavisky, Rachel Sarah Dean, Michael Henry Molloy
The aims of this study were to determine the prevalence of feline leukaemia virus (FeLV) and feline immunodeficiency virus (FIV) infections in cats presented to two RSPCA (Royal Society for the Prevention of Cruelty to Animals) animal rehoming centres and to identify risk factors for infection. All cats presented at each centre between August 2011 and August 2012 were subjected to a patient-side test for FeLV/FIV on entry. Kittens under three months and cats euthanased within a short time of presentation were excluded from the study...
September 16, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28915995/detection-and-molecular-characterization-of-feline-hemoplasmas-in-wild-felid-species-in-iran-in-the-middle-east
#8
Fereshteh Ghazisaeedi, Nahid Atyabi, Taghi Zahraei Salehi, Saeid Tabatabaei, Iraj Ashrafi Tamai, Iman Memarian, Séverine Tasker
Three feline hemoplasma species exist in felids: Mycoplasma haemofelis, 'Candidatus Mycoplasma haemominutum', and 'Candidatus Mycoplasma turicensis'. The aims of the study were to determine the presence of, and molecularly characterize, any hemoplasmas in wild felids, including the endangered Persian leopard in Iran, the Middle East. Blood samples were collected from 19 wild felids, including three Persian leopards. Using species-specific hemoplasma PCRs and ELISA serological testing for feline leukaemia virus and feline immunodeficiency virus (FIV), two Persian leopards were found to be infected with 'Ca...
October 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28905885/long-term-correction-of-hemophilia-a-mice-following-lentiviral-mediated-delivery-of-an-optimized-canine-factor-viii-gene
#9
J M Staber, M J Pollpeter, C-G Anderson, M Burrascano, A L Cooney, P L Sinn, D T Rutkowski, W C Raschke, P B McCray
Current therapies for hemophilia A include frequent prophylactic or on-demand intravenous factor treatments which are costly, inconvenient and may lead to inhibitor formation. Viral vector delivery of factor VIII (FVIII) cDNA has the potential to alleviate the debilitating clotting defects. Lentiviral-based vectors delivered to murine models of hemophilia A mediate phenotypic correction. However, a limitation of lentiviral-mediated FVIII delivery is inefficient transduction of target cells. Here, we engineer a feline immunodeficiency virus (FIV) -based lentiviral vector pseudotyped with the baculovirus GP64 envelope glycoprotein to mediate efficient gene transfer to mouse hepatocytes...
September 14, 2017: Gene Therapy
https://www.readbyqxmd.com/read/28895871/type-i-interferons-in-the-pathogenesis-and-treatment-of-canine-diseases
#10
REVIEW
Daniela Klotz, Wolfgang Baumgärtner, Ingo Gerhauser
Type I interferons (IFNs) such as IFN-α, IFN-β, IFN-ε, IFN-κ, and IFN-ω represent cytokines, which are deeply involved in the regulation and activation of innate and adaptive immune responses. They possess strong antiviral, antiproliferative, and immunomodulatory activities allowing their use in the therapy of different viral diseases, neoplasms, and immune-mediated disorders, respectively. Initially, treatment strategies were based on nonspecific inducers of type I IFNs, which were soon replaced by different recombinant proteins...
September 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28884827/linking-social-and-spatial-networks-to-viral-community-phylogenetics-reveals-subtype-specific-transmission-dynamics-in-african-lions
#11
Nicholas M Fountain-Jones, Craig Packer, Jennifer L Troyer, Kimberly VanderWaal, Stacie Robinson, Maude Jacquot, Meggan E Craft
Heterogeneity within pathogen species can have important consequences for how pathogens transmit across landscapes; however, discerning different transmission routes is challenging. Here, we apply both phylodynamic and phylogenetic community ecology techniques to examine the consequences of pathogen heterogeneity on transmission by assessing subtype-specific transmission pathways in a social carnivore. We use comprehensive social and spatial network data to examine transmission pathways for three subtypes of feline immunodeficiency virus (FIVPle ) in African lions (Panthera leo) at multiple scales in the Serengeti National Park, Tanzania...
September 8, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28855428/molecular-epidemiological-study-of-gammaherpesvirus-in-domestic-cats-in-japan
#12
Morihiro Tateno, Masashi Takahashi, Eri Miyake, Kazuo Nishigaki, Hajime Tsujimoto, Yasuyuki Endo
Gammaherpesviruses (GHVs) are members of an emerging subfamily of the family Herpesviridae. A recent study identified a novel GHV in domestic cats (Felis catus GHV1, FcaGHV1), and epidemiological surveys have found that FcaGHV1 is distributed worldwide. In this study, we investigated the prevalence of GHVs in domestic cats in Japan with a molecular epidemiological survey. Blood samples were collected from 1,738 domestic cats and GHV-derived DNA was detected with PCR in 1.3% (23/1,738) of the Japanese domestic cats...
August 28, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28840782/comparison-of-three-blood-transfusion-guidelines-applied-to-31-feline-donors-to-minimise-the-risk-of-transfusion-transmissible-infections
#13
Maria Luisa Marenzoni, Stefania Lauzi, Arianna Miglio, Mauro Coletti, Andrea Arbia, Saverio Paltrinieri, Maria Teresa Antognoni
Objectives The increased demand for animal blood transfusions creates the need for an adequate number of donors. At the same time, a high level of blood safety must be guaranteed and different guidelines (GLs) deal with this topic. The aim of this study was to evaluate the appropriateness of different GLs in preventing transfusion-transmissible infections (TTI) in Italian feline blood donors. Methods Blood samples were collected from 31 cats enrolled as blood donors by the owners' voluntary choice over a period of approximately 1 year...
August 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28749325/central-and-peripheral-reservoirs-of-feline-immunodeficiency-virus-in-cats-a-review
#14
REVIEW
Chrissy D Eckstrand, Ellen E Sparger, Brian G Murphy
Infection with feline immunodeficiency virus (FIV), a lentivirus similar to human immunodeficiency virus (HIV), results in lifelong viral persistence and progressive immunopathology in the cat. FIV has the ability to infect and produce infectious virus in a number of different cell types. FIV provirus can also be maintained in a replication-competent but transcriptionally quiescent state, facilitating viral persistence over time. Immediately after the initial infection, FIV infection quickly disseminates to many anatomical compartments within the host including lymphoid organs, gastrointestinal tract and brain...
August 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28677421/molecular-detection-of-viral-agents-in-free-ranging-and-captive-neotropical-felids-in-brazil
#15
Mariana Malzoni Furtado, Sueli Akemi Taniwaki, Iracema Nunes de Barros, Paulo Eduardo Brandão, José Luiz Catão-Dias, Sandra Cavalcanti, Laury Cullen, Claudia Filoni, Anah Tereza de Almeida Jácomo, Rodrigo Silva Pinto Jorge, Nairléia Dos Santos Silva, Leandro Silveira, José Soares Ferreira Neto
We describe molecular testing for felid alphaherpesvirus 1 (FHV-1), carnivore protoparvovirus 1 (CPPV-1), feline calicivirus (FCV), alphacoronavirus 1 (feline coronavirus [FCoV]), feline leukemia virus (FeLV), feline immunodeficiency virus (FIV), and canine distemper virus (CDV) in whole blood samples of 109 free-ranging and 68 captive neotropical felids from Brazil. Samples from 2 jaguars ( Panthera onca) and 1 oncilla ( Leopardus tigrinus) were positive for FHV-1; 2 jaguars, 1 puma ( Puma concolor), and 1 jaguarundi ( Herpairulus yagouaroundi) tested positive for CPPV-1; and 1 puma was positive for FIV...
July 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28671491/seroprevalences-of-feline-leukemia-virus-and-feline-immunodeficiency-virus-infection-in-cats-in-the-united-states-and-canada-and-risk-factors-for-seropositivity
#16
Amie N Burling, Julie K Levy, H Morgan Scott, Michael M Crandall, Sylvia J Tucker, Erin G Wood, Jessie D Foster
OBJECTIVE To estimate seroprevalences for FeLV antigen and anti-FIV antibody and risk factors for seropositivity among cats in the United States and Canada. DESIGN Cross-sectional study. ANIMALS 62,301 cats tested at 1,396 veterinary clinics (n = 45,406) and 127 animal shelters (16,895). PROCEDURES Blood samples were tested with a point-of-care ELISA for FeLV antigen and anti-FIV antibody. Seroprevalence was estimated, and risk factors for seropositivity were evaluated with bivariate and multivariable mixed-model logistic regression analyses adjusted for within-clinic or within-shelter dependencies...
July 15, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28659065/prevalence-and-risk-factors-for-cats-testing-positive-for-feline-immunodeficiency-virus-and-feline-leukaemia-virus-infection-in-cats-entering-an-animal-shelter-in-new-zealand
#17
M C Gates, S Vigeant, A Dale
AIMS To estimate the prevalence of cats testing positive for antibodies to feline immunodeficiency virus (FIV) and feline leukaemia virus (FeLV) antigens in domestic cats entering a New Zealand animal shelter, based on a commercial point-of-care ELISA, to identify risk factors associated with cats testing positive, and to compare the results obtained from the ELISA with those obtained using PCR-based testing. METHOD A cross-sectional study was performed on 388 cats entering the Royal New Zealand Society for the Prevention of Cruelty to Animals animal shelter in Auckland, New Zealand between 7 February 2014 and 30 May 2014...
July 24, 2017: New Zealand Veterinary Journal
https://www.readbyqxmd.com/read/28589743/rapid-and-sensitive-insulated-isothermal-pcr-for-point-of-need-feline-leukaemia-virus-detection
#18
Rebecca P Wilkes, Eman Anis, Dawn Dunbar, Pei-Yu A Lee, Yun-Long Tsai, Fu-Chun Lee, Hsiao-Fen G Chang, Hwa-Tang T Wang, Elizabeth M Graham
Objectives Feline leukaemia virus (FeLV), a gamma retrovirus, causes diseases of the feline haematopoietic system that are invariably fatal. Rapid and accurate testing at the point-of-need (PON) supports prevention of virus spread and management of clinical disease. This study evaluated the performance of an insulated isothermal PCR (iiPCR) that detects proviral DNA, and a reverse transcription (RT)-iiPCR that detects both viral RNA and proviral DNA, for FeLV detection at the PON. Methods Mycoplasma haemofelis, feline coronavirus, feline herpesvirus, feline calicivirus and feline immunodeficiency virus were used to test analytical specificity...
June 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28560784/reversible-and-cachexia-associated-feline-skin-fragility-syndrome-in-three-cats
#19
Nicla Furiani, Ilaria Porcellato, Chiara Brachelente
BACKGROUND: Feline skin fragility syndrome (FSFS) is an acquired disorder characterized by altered collagen production resulting in an extremely thin and fragile skin. FSFS is associated with diseases characterized by excessive steroidal hormones that can inhibit collagen synthesis. It is also described concomitantly with severe inflammatory, infectious or neoplastic conditions where the pathogenesis remains largely unknown. OBJECTIVES: To describe three cases of FSFS in cats that become cachectic secondary to different causes without glucocorticoid involvement...
May 31, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28510253/feline-immunodeficiency-virus-and-feline-leukemia-virus-frequency-and-associated-factors-in-cats-in-northeastern-brazil
#20
L C Lacerda, A N Silva, J S Freitas, R D S Cruz, R A Said, A D Munhoz
Our aims were to determine the frequencies of feline immunodeficiency virus (FIV) and feline leukemia virus (FeLV) in owned and stray cats in the northeastern region of Brazil, ascertain the status of FeLV infection, and investigate potential associated factors among the owned cats. Blood samples from 200 asymptomatic owned cats and 30 stray cats were processed using nested PCR and commercial immunochromatographic tests to diagnose infections. To evaluate the factors associated with FIV and/or FeLV in owned cats, a semi-structured interview was conducted with each owner about the animal's environment, and these data were subjected to unconditional logistic regression...
May 10, 2017: Genetics and Molecular Research: GMR
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