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Herpes simplex 1

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https://www.readbyqxmd.com/read/28636866/prevalence-and-risk-factors-of-chlamydia-trachomatis-neisseria-gonorrhoeae-trichomonas-vaginalis-and-other-sexually-transmissible-infections-among-women-attending-antenatal-clinics-in-three-provinces-in-papua-new-guinea-a-cross-sectional-survey
#1
Lisa M Vallely, Pamela Toliman, Claire Ryan, Glennis Rai, Johanna Wapling, Carolyn Tomado, Savarina Huliafi, Gloria Munnull, Patricia Rarau, Suparat Phuanukoonnon, Handan Wand, Peter Siba, Glen D L Mola, John M Kaldor, Andrew J Vallely
Background Papua New Guinea (PNG) is estimated to have among the highest prevalences of HIV and sexually transmissible infections (STIs) of any Asia-Pacific country, and one of the highest burdens of maternal syphilis globally. The prevalence of curable STIs, such as Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG) and Trichomonas vaginalis (TV), among pregnant women in PNG is relatively unknown. METHODS: A cross-sectional bio-behavioural survey to investigate the epidemiology of CT, NG, TV and other STIs among pregnant women in three provinces of PNG was undertaken...
October 2016: Sexual Health
https://www.readbyqxmd.com/read/28632111/herpes-neolabialis-herpes-simplex-virus-type-1-infection-of-the-neolabia-in-a-transgender-woman
#2
Lian Elfering, Wouter B van der Sluis, Joline F Mermans, Marlon E Buncamper
A 24-year-old transgender woman consulted our outpatient clinic with a painful, itchy and red left labia. She underwent a penile inversion vaginoplasty 18 months before presentation. At physical examination of the left labia, erythema, edema and herpetic vesicles with ulceration were observed. A vesicle fluid swab was obtained and the presence of herpes simplex virus type 1 (HSV-1) was detected by PCR assay. Treatment consisted of oral valaciclovir (500 mg twice daily) for a total of five days.Topically-applied lidocaine cream (3%) was used for pain management...
July 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28629987/anti-herpes-simplex-virus-type-1-activity-of-houttuynoid-a-a-new-flavonoid-from-houttuynia-cordata-thunb
#3
Ting Li, Libao Liu, Hongling Wu, Shaodan Chen, Qinchang Zhu, Hao Gao, Xiongtao Yu, Yi Wang, Wenhan Su, Xinsheng Yao, Tao Peng
Early events in herpes simplex virus type 1 (HSV-1) infection reactivate latent human immunodeficiency virus, Epstein-Barr virus, and human papillomavirus in the presence of acyclovir (ACV). The common use of nucleoside analog medications, such as ACV and pencyclovir, has resulted in the emergence of drug-resistant HSV-1 strains in clinical therapy. Therefore, new antiherpetics that can inhibit early events in HSV-1 infection should be developed. An example of this treatment is Houttuynia cordata Thunb. water extract, which can inhibit HSV-1 infection through multiple mechanisms...
June 16, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28628343/chronic-herpetic-retinitis-clinical-features-and-long-term-outcomes
#4
Soufiane Souissi, Christine Fardeau, Hoang Mai Le, Flore Rozenberg, Bahram Bodaghi, Phuc Le Hoang
INTRODUCTION: Chronic uveitis treated with immunosuppressive agents may have unfavorable outcomes due to delays in diagnosis. The aim of this study was to review initial data from clinical and ocular assessments and patient outcomes following specific treatments for atypical herpes virus ocular infections. METHODS: The records of four consecutive patients with recurrent uveitis for at least five years treated in our department between 2001 and 2016 were retrospectively reviewed...
June 19, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28623258/chromatin-organization-regulates-viral-egress-dynamics
#5
Vesa Aho, Markko Myllys, Visa Ruokolainen, Satu Hakanen, Elina Mäntylä, Jori Virtanen, Veijo Hukkanen, Thomas Kühn, Jussi Timonen, Keijo Mattila, Carolyn A Larabell, Maija Vihinen-Ranta
Various types of DNA viruses are known to elicit the formation of a large nuclear viral replication compartment and marginalization of the cell chromatin. We used three-dimensional soft x-ray tomography, confocal and electron microscopy, combined with numerical modelling of capsid diffusion to analyse the molecular organization of chromatin in herpes simplex virus 1 infection and its effect on the transport of progeny viral capsids to the nuclear envelope. Our data showed that the formation of the viral replication compartment at late infection resulted in the enrichment of heterochromatin in the nuclear periphery accompanied by the compaction of chromatin...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28614387/global-sensing-of-the-antigenic-structure-of-herpes-simplex-virus-gd-using-high-throughput-array-based-spr-imaging
#6
Tina M Cairns, Noah T Ditto, Huan Lou, Benjamin D Brooks, Doina Atanasiu, Roselyn J Eisenberg, Gary H Cohen
While HSV-2 typically causes genital lesions, HSV-1 is increasingly the cause of genital herpes. In addition, neonatal HSV infections are associated with a high rate of mortality and HSV-2 may increase the risk for HIV or Zika infections, reinforcing the need to develop an effective vaccine. In the GSK Herpevac trial, doubly sero-negative women were vaccinated with a truncated form of gD2 [gD2(284t)], then examined for anti-gD serum titers and clinical manifestations of disease. Surprisingly, few vaccinees were protected against genital HSV-2 but 86% were protected from genital HSV-1...
June 14, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28612172/chromium-iii-and-iron-iii-inhibits-replication-of-dna-and-rna-viruses
#7
Sylwia Terpiłowska, Andrzej Krzysztof Siwicki
The aim of this study was to examine the effect of treating of chromium(III) and iron(III) and their combinations on Herpes Simplex Virus type 1 (HSV-1) and Bovine Viral Diarrhoea virus (BVDV) replication. The antiviral efficacies of chromium(III) and iron(III) on HSV-1 and BVDV were evaluated using Real Time PCR method. Moreover, the cytotoxicity of these microelements was examined using the MTT reduction assay. The IC50 (50% inhibiotory concentration) for the chromium chloride was 1100 μM for Hep-2 cells and 1400 μM for BT cells...
June 13, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28611252/the-primary-enveloped-virion-of-herpes-simplex-virus-1-its-role-in-nuclear-egress
#8
William W Newcomb, Juan Fontana, Dennis C Winkler, Naiqian Cheng, J Bernard Heymann, Alasdair C Steven
Many viruses migrate between different cellular compartments for successive stages of assembly. The HSV-1 capsid assembles in the nucleus and then transfers into the cytoplasm. First, the capsid buds through the inner nuclear membrane, becoming coated with nuclear egress complex (NEC) protein. This yields a primary enveloped virion (PEV) whose envelope fuses with the outer nuclear membrane, releasing the capsid into the cytoplasm. We investigated the associated molecular mechanisms by isolating PEVs from US3-null-infected cells and imaging them by cryo-electron microscopy and tomography...
June 13, 2017: MBio
https://www.readbyqxmd.com/read/28611249/a-herpesviral-immediate-early-protein-promotes-transcription-elongation-of-viral-transcripts
#9
Hannah L Fox, Jill A Dembowski, Neal A DeLuca
Herpes simplex virus 1 (HSV-1) genes are transcribed by cellular RNA polymerase II (RNA Pol II). While four viral immediate early proteins (ICP4, ICP0, ICP27, and ICP22) function in some capacity in viral transcription, the mechanism by which ICP22 functions remains unclear. We observed that the FACT complex (comprised of SSRP1 and Spt16) was relocalized in infected cells as a function of ICP22. ICP22 was also required for the association of FACT and the transcription elongation factors SPT5 and SPT6 with viral genomes...
June 13, 2017: MBio
https://www.readbyqxmd.com/read/28607084/systems-guided-forward-genetic-screen-reveals-a-critical-role-of-the-replication-stress-response-protein-etaa1-in-t-cell-clonal-expansion
#10
Lisa A Miosge, Yovina Sontani, Aaron Chuah, Keisuke Horikawa, Tiffany A Russell, Yan Mei, Mayura V Wagle, Debbie R Howard, Anselm Enders, David C Tscharke, Christopher C Goodnow, Ian A Parish
T-cell immunity requires extremely rapid clonal proliferation of rare, antigen-specific T lymphocytes to form effector cells. Here we identify a critical role for ETAA1 in this process by surveying random germ line mutations in mice using exome sequencing and bioinformatic annotation to prioritize mutations in genes of unknown function with potential effects on the immune system, followed by breeding to homozygosity and testing for immune system phenotypes. Effector CD8(+) and CD4(+) T-cell formation following immunization, lymphocytic choriomeningitis virus (LCMV) infection, or herpes simplex virus 1 (HSV1) infection was profoundly decreased despite normal immune cell development in adult mice homozygous for two different Etaa1 mutations: an exon 2 skipping allele that deletes Gly78-Leu119, and a Cys166Stop truncating allele that eliminates most of the 877-aa protein...
June 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28600331/does-maternal-hsv-2-coinfection-increase-mother-to-child-transmission-of-hiv-a-systematic-review
#11
REVIEW
Vishalini Sivarajah, Kevin Venus, Mark H Yudin, Kellie E Murphy, Steven A Morrison, Darrell Hs Tan
BACKGROUND: Reducing HIV mother-to-child transmission (MTCT) is critical to ending the HIV pandemic. Reports suggest that herpes simplex virus-2 (HSV-2), a common coinfection in HIV-infected individuals, is associated with increased MTCT, but results have been conflicting. We conducted a systematic review of observational studies to quantify the magnitude of this relationship (PROSPERO no. CRD42016043315). METHODS: We searched Medline (1981 to June week 3, 2016), EMBASE (1981 to week 26, 2016), relevant conferences (2013-2016) and bibliographies of identified studies for cohort and case-control studies enrolling HIV-positive women during pregnancy or peripartum that quantified the effect of HSV-2 infection on MTCT...
June 9, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28594343/modeling-hsv-1-latency-in-human-embryonic-stem-cell-derived-neurons
#12
Aldo Pourchet, Aram S Modrek, Dimitris G Placantonakis, Ian Mohr, Angus C Wilson
Herpes simplex virus 1 (HSV-1) uses latency in peripheral ganglia to persist in its human host, however, recurrent reactivation from this reservoir can cause debilitating and potentially life-threatening disease. Most studies of latency use live-animal infection models, but these are complex, multilayered systems and can be difficult to manipulate. Infection of cultured primary neurons provides a powerful alternative, yielding important insights into host signaling pathways controlling latency. However, small animal models do not recapitulate all aspects of HSV-1 infection in humans and are limited in terms of the available molecular tools...
June 8, 2017: Pathogens
https://www.readbyqxmd.com/read/28592828/a-highly-conserved-sequence-of-the-viral-tap-inhibitor-icp47-is-required-for-freezing-of-the-peptide-transport-cycle
#13
Tony Matschulla, Richard Berry, Carolin Gerke, Marius Döring, Julia Busch, Jennifer Paijo, Ulrich Kalinke, Frank Momburg, Hartmut Hengel, Anne Halenius
The transporter associated with antigen processing (TAP) translocates antigenic peptides into the endoplasmic reticulum (ER) lumen for loading onto MHC class I molecules. This is a key step in the control of viral infections through CD8+ T-cells. The herpes simplex virus type-1 encodes an 88 amino acid long species-specific TAP inhibitor, ICP47, that functions as a high affinity competitor for the peptide binding site on TAP. It has previously been suggested that the inhibitory function of ICP47 resides within the N-terminal region (residues 1-35)...
June 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28592536/evasion-of-the-sting-dna-sensing-pathway-by-the-vp11-12-of-herpes-simplex-virus-type-1
#14
Thibaut Deschamps, Maria Kalamvoki
The STimulator of INterferon Genes (STING) is a broad antimicrobial factor that restricts HSV by activating type I interferon and pro-inflammatory responses upon sensing of foreign DNA. UL46 is one of the most abundant tegument proteins of HSV-1 but a well-established function has yet to be found. We found that the HSV-1 UL46 protein interacts with and co-localizes with STING. A ΔUL46 virus displayed growth defects and activated innate immunity but both effects were alleviated in STING-knockdown cells. UL46 was also required for the inhibition of the 2' 3' -cGAMP-dependent immune responses during infection...
June 7, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28591279/detection-of-herpes-simplex-1-and-2-and-varicella-zoster-virus-by-quantitative-real-time-polymerase-chain-reaction-in-corneas-from-patients-with-bacterial-keratitis
#15
Heloisa Nascimento, Aripuanã Watanabe, Ana Carolina Cabreira Vieira, Andrea Pelegrini, Maria Cecília Yu, Paulo José Martins Bispo, Celso Francisco Hernandes Granato, Ana Luisa Höfling-Lima
Objective: Bacterial keratitis occurs worldwide, and despite recent developments, it remains a potentially blinding condition. This study assesses the presence of herpes simplex virus (HSV-1 and -2) and varicella zoster virus (VZV) by quantitative real-time polymerase chain reaction (qPCR) in corneal scrapings from patients with bacterial keratitis. Methods: A total of 65 patients with clinical diagnoses of infectious corneal ulcers prospectively underwent clinical eye examinations...
March 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28586396/prevalence-incidence-and-correlates-of-hsv-2-infection-in-an-hiv-incidence-adolescent-and-adult-cohort-study-in-western-kenya
#16
Brenda Akinyi, Collins Odhiambo, Fredrick Otieno, Seth Inzaule, Simon Oswago, Emily Kerubo, Richard Ndivo, Clement Zeh
BACKGROUND: Herpes simplex virus type 2 (HSV-2) infections are associated with increased risk of HIV transmission. We determined HSV-2 prevalence, incidence and associated risk factors, incidence among persons with indeterminate results, and prevalence of HSV-2/HIV co-infection among young adults (18-34 years) and adolescents (16-17 years) enrolled in an HIV incidence cohort study in western Kenya. METHODS: Participants (n = 1106; 846 adults) were screened and those HIV-1 negative were enrolled and followed-up quarterly for one year...
2017: PloS One
https://www.readbyqxmd.com/read/28585435/creating-animal-models-why-not-use-the-chinese-tree-shrew-tupaia-belangeri-chinensis
#17
Yong-Gang Yao
The Chinese tree shrew (Tupaia belangeri chinensis), a squirrel-like and rat-sized mammal, has a wide distribution in Southeast Asia, South and Southwest China and has many unique characteristics that make it suitable for use as an experimental animal. There have been many studies using the tree shrew (Tupaia belangeri) aimed at increasing our understanding of fundamental biological mechanisms and for the modeling of human diseases and therapeutic responses. The recent release of a publicly available annotated genome sequence of the Chinese tree shrew and its genome database (www...
May 18, 2017: Zoological Research
https://www.readbyqxmd.com/read/28584076/frontline-science-aspirin-triggered-resolvin-d1-controls-herpes-simplex-virus-induced-corneal-immunopathology
#18
Naveen K Rajasagi, Siddheshvar Bhela, Siva Karthik Varanasi, Barry T Rouse
Stromal keratitis (SK) is a chronic immunopathological lesion of the eye, caused by HSV-1 infection, and a common cause of vision impairment in humans. The inflammatory lesions in the cornea are primarily caused by neutrophils with the active participation of CD4(+) T cells. Therefore, the targeting of these immune cell types and their products represents a potentially valuable form of therapy to reduce the severity of disease. Resolvin D1 (RvD1) and its epimer aspirin-triggered RvD1 (AT-RvD1) are lipid mediators derived from docosahexaenoic acid (DHA) and were shown to promote resolution in several inflammatory disease models...
June 5, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28581445/glutamine-supplementation-suppresses-herpes-simplex-virus-reactivation
#19
Kening Wang, Yo Hoshino, Kennichi Dowdell, Marta Bosch-Marce, Timothy G Myers, Mayra Sarmiento, Lesley Pesnicak, Philip R Krause, Jeffrey I Cohen
Chronic viral infections are difficult to treat, and new approaches are needed, particularly those aimed at reducing reactivation by enhancing immune responses. Herpes simplex virus (HSV) establishes latency and reactivates frequently, and breakthrough reactivation can occur despite suppressive antiviral therapy. Virus-specific T cells are important to control HSV, and proliferation of activated T cells requires increased metabolism of glutamine. Here, we found that supplementation with oral glutamine reduced virus reactivation in latently HSV-1-infected mice and HSV-2-infected guinea pigs...
June 5, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28577241/human-infectious-diseases-and-risk-of-preeclampsia-an-updated-review-of-the-literature
#20
REVIEW
Malihe Nourollahpour Shiadeh, Zahra Behboodi Moghadam, Ishag Adam, Vafa Saber, Maryam Bagheri, Ali Rostami
BACKGROUND: Preeclampsia (PE) is one of the major causes of maternal and perinatal morbidity and mortality, especially in low- and middle-income countries. In recent years, a growing body of literatures suggests that infections by bacteria, viruses, and parasites and their related inflammations play an important role in the pathogenesis of PE. METHODS: We searched PubMed, Google scholar, and Cochrane databases using the following search words: "infection and preeclampsia," "bacterial infection and preeclampsia," "viral infection and preeclampsia" and "parasitic infection and preeclampsia...
June 2, 2017: Infection
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