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https://www.readbyqxmd.com/read/29240636/the-etiology-of-genital-ulcer-disease-and-coinfections-with-chlamydia-trachomatis-and-neisseria-gonorrhoeae-in-zimbabwe-results-from-the-zimbabwe-sti-etiology-study
#1
More Mungati, Anna Machiha, Owen Mugurungi, Mufuta Tshimanga, Peter H Kilmarx, Justice Nyakura, Gerald Shambira, Vitalis Kupara, David A Lewis, Elizabeth Gonese, Beth A Tippett Barr, H Hunter Handsfield, Cornelis A Rietmeijer
BACKGROUND: In many countries, sexually transmitted infections (STIs) are treated syndromically. Thus, patients diagnosed as having genital ulcer disease (GUD) in Zimbabwe receive a combination of antimicrobials to treat syphilis, chancroid, lymphogranuloma venereum (LGV), and genital herpes. Periodic studies are necessary to assess the current etiology of GUD and assure the appropriateness of current treatment guidelines. MATERIALS AND METHODS: We selected 6 geographically diverse clinics in Zimbabwe serving high numbers of STI cases to enroll men and women with STI syndromes, including GUD...
January 2018: Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/29240037/fetal-anemia-causing-hydrops-fetalis-from-an-alpha-globin-variant-homozygous-hemoglobin-constant-spring
#2
Patcharee Komvilaisak, Ratana Komvilaisak, Arunee Jetsrisuparb, Surapon Wiangnon, Junya Jirapradittha, Pakaphan Kiatchoosakun, Goonapa Fucharoen
BACKGROUND: Fetal anemia is often assumed to be due to red cell alloimmunization and Parvovirus infection, and can lead to hydrops fetalis and death in utero. Other causes, such as mutations of hemoglobin alpha, are less commonly considered. METHODS: We report 7 cases with fetal anemia causing hydrops fetalis. Serial Doppler ultrasound for measurement peak systolic velocity (PSV) of middle cerebral artery (MCA) was used for evaluation of fetal anemia. Fetal anemia is suggested if the MCA/PSV ratio is >1...
December 12, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29237844/hsv-1-dna-polymerase-rnase-h-activity-acts-in-a-3-5-direction-and-is-dependent-on-the-3-5-exonuclease-active-site
#3
Jessica L Lawler, Purba Mukherjee, Donald M Coen
The catalytic subunit (Pol) of herpes simplex virus-1 (HSV-1) DNA polymerase has been extensively studied both as a model for other family B DNA polymerases and for its differences from these enzymes as an antiviral target. Among the activities of HSV-1 Pol is an intrinsic RNase H activity that cleaves RNA from RNA:DNA hybrids. There has long been a controversy regarding whether this activity is due to the 3' -5' exonuclease of Pol or whether it is a separate activity, possibly acting on 5' RNA termini. To investigate this issue, we compared wild-type HSV-1 Pol and a 3' -5' exonuclease-deficient mutant, D368A, for DNA polymerase activity, 3' -5' exonuclease activity, and RNase H activity in vitro Additionally, we assessed the RNase H activity using differentially end-labeled templates with 5' or 3' RNA termini...
December 13, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29231254/characteristics-of-pediatric-recurrent-erythema-multiforme
#4
Adam Heinze, Megha Tollefson, Kristen E Holland, Yvonne E Chiu
BACKGROUND: Erythema multiforme (EM) is an acute condition characterized by distinctive target lesions of the skin often accompanied by mucosal ulcers. A subset of individuals experience frequent episodes of recurrent EM, which is rare and poorly understood, especially in children. OBJECTIVE: To characterize clinical features, laboratory findings, and treatment responses of pediatric recurrent EM. METHODS: A retrospective chart review was conducted at the Children's Hospital of Wisconsin in Milwaukee, Wisconsin (2000-2015) and the Mayo Clinic in Rochester, Minnesota (1990-2015)...
December 12, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/29230977/scleral-buckling-using-a-non-contact-wide-angle-viewing-system-with-a-25-gauge-chandelier-endoilluminator
#5
Jaehyuck Jo, Byung Gil Moon, Joo Yong Lee
PURPOSE: To report the outcome of scleral buckling using a non-contact wide-angle viewing system with a 25-gauge chandelier endoilluminator. METHODS: Retrospective analyses of medical records were performed for 17 eyes of 16 patients with primary rhegmatogenous retinal detachment (RRD) without proliferative vitreoretinopathy who had undergone conventional scleral buckling with cryoretinopexy using the combination of a non-contact wide-angle viewing system and chandelier endoillumination...
December 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/29228551/human-cytomegalovirus-and-herpes-simplex-type-i-virus-can-engage-rna-polymerase-i-for-transcription-of-immediate-early-genes
#6
Ourania N Kostopoulou, Vanessa Wilhelmi, Sina Raiss, Sharan Ananthaseshan, Mikael S Lindström, Jiri Bartek, Cecilia Söderberg-Naucler
Human cytomegalovirus (HCMV) utilizes RNA polymerase II to transcribe viral genes and produce viral mRNAs. It can specifically target the nucleolus to facilitate viral transcription and translation. As RNA polymerase I (Pol I)-mediated transcription is active in the nucleolus, we investigated the role of Pol I, along with relative contributions of the human Pol II and Pol III, to early phases of viral transcription in HCMV infected cells, compared with Herpes Simplex Virus-1 (HSV-1) and Murine cytomegalovirus (MCMV)...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29224963/meeting-report-initial-world-health-organization-consultation-on-herpes-simplex-virus-hsv-vaccine-preferred-product-characteristics-march-2017
#7
Sami L Gottlieb, Birgitte K Giersing, Julian Hickling, Rebecca Jones, Carolyn Deal, David C Kaslow
The development of vaccines against herpes simplex virus (HSV) is an important global goal for sexual and reproductive health. A key priority to advance development of HSV vaccines is the definition of preferred product characteristics (PPCs), which provide strategic guidance on World Health Organization (WHO) preferences for new vaccines, specifically from a low- and middle-income country (LMIC) perspective. To start the PPC process for HSV vaccines, the WHO convened a global stakeholder consultation in March 2017, to define the priority public health needs that should be addressed by HSV vaccines and discuss the key considerations for HSV vaccine PPCs, particularly for LMICs...
December 7, 2017: Vaccine
https://www.readbyqxmd.com/read/29223580/modeling-hiv-disease-progression-and-transmission-at-population-level-the-potential-impact-of-modifying-disease-progression-in-hiv-treatment-programs
#8
Jennifer M Ross, Roger Ying, Connie L Celum, Jared M Baeten, Katherine K Thomas, Pamela M Murnane, Heidi van Rooyen, James P Hughes, Ruanne V Barnabas
INTRODUCTION: Mathematical models that incorporate HIV disease progression dynamics can estimate the potential impact of strategies that delay HIV disease progression and reduce infectiousness for persons not on antiretroviral therapy (ART). Suppressive treatment of HIV-positive persons co-infected with herpes simplex virus-2 (HSV-2) with valacyclovir, an HSV-2 antiviral, can lower HIV viral load, but the impact of partially-suppressive valacyclovir relative to fully-suppressive ART on population HIV transmission has not been estimated...
December 5, 2017: Epidemics
https://www.readbyqxmd.com/read/29216507/chimeric-hcmv-hsv-1-and-%C3%AE-%C3%AE-134-5-oncolytic-herpes-simplex-virus-elicit-immune-mediated-antigliomal-effect-and-antitumor-memory
#9
Mohammed G Ghonime, Josh Jackson, Amish Shah, Justin Roth, Mao Li, Ute Saunders, Jennifer Coleman, G Yancey Gillespie, James M Markert, Kevin A Cassady
Malignant gliomas are the most common primary brain tumor and are characterized by rapid and highly invasive growth. Because of their poor prognosis, new therapeutic strategies are needed. Oncolytic virotherapy (OV) is a promising strategy for treating cancer that incorporates both direct viral replication mediated and immune mediated mechanisms to kill tumor cells. C134 is a next generation Δγ134.5 oHSV-1 with improved intratumoral viral replication. It remains safe in the CNS environment by inducing early IFN signaling which restricts its replication in non-malignant cells...
December 4, 2017: Translational Oncology
https://www.readbyqxmd.com/read/29216315/the-pul37-tegument-protein-guides-alpha-herpesvirus-retrograde-axonal-transport-to-promote-neuroinvasion
#10
Alexsia L Richards, Patricia J Sollars, Jared D Pitts, Austin M Stults, Ekaterina E Heldwein, Gary E Pickard, Gregory A Smith
A hallmark property of the neurotropic alpha-herpesvirinae is the dissemination of infection to sensory and autonomic ganglia of the peripheral nervous system following an initial exposure at mucosal surfaces. The peripheral ganglia serve as the latent virus reservoir and the source of recurrent infections such as cold sores (herpes simplex virus type I) and shingles (varicella zoster virus). However, the means by which these viruses routinely invade the nervous system is not fully understood. We report that an internal virion component, the pUL37 tegument protein, has a surface region that is an essential neuroinvasion effector...
December 7, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29214036/strong-viral-associations-with-sle-among-filipinos
#11
Evan S Vista, Michael H Weisman, Mariko L Ishimori, Hua Chen, Rebecka L Bourn, Ben F Bruner, Laniyati Hamijoyo, Robelle D Tanangunan, Noga J Gal, Julie M Robertson, John B Harley, Joel M Guthridge, Sandra V Navarra, Judith A James
Objectives: Epstein-Barr virus (EBV) is considered an important environmental factor in SLE aetiology, but the relationship between SLE and EBV in the Filipino population is unknown. We tested associations between SLE, lupus-associated autoantibodies and seropositivity for EBV and other herpes viruses in the Filipino population. Methods: Sera from Filipino patients with SLE (n=233), unaffected first-degree relatives (FDRs, n=543) and unrelated controls (n=221) were tested for antibodies against EBV, cytomegalovirus (CMV) and herpes simplex viruses (HSV-1 and HSV-2) by standardised ELISAs...
2017: Lupus Science & Medicine
https://www.readbyqxmd.com/read/29213157/immunotherapy-and-gene-therapy-as-novel-treatments-for-cancer
#12
REVIEW
Martha Montserrat Rangel-Sosa, Estuardo Aguilar-Córdova, Augusto Rojas-Martínez
The immune system interacts closely with tumors during the disease development and progression to metastasis. The complex communication between the immune system and the tumor cells can prevent or promote tumor growth. New therapeutic approaches harnessing protective immunological mechanisms have recently shown very promising results. This is performed by blocking inhibitory signals or by activating immunological effector cells directly. Immune checkpoint blockade with monoclonal antibodies directed against the inhibitory immune receptors CTLA-4 and PD-1 has emerged as a successful treatment approach for patients with advanced melanoma...
September 30, 2017: Colombia Médica: CM
https://www.readbyqxmd.com/read/29209895/antiviral-activity-and-metal-ion-binding-properties-of-some-2-hydroxy-3-methoxyphenyl-acylhydrazones
#13
M Carcelli, E Fisicaro, C Compari, L Contardi, D Rogolino, C Solinas, A Stevaert, L Naesens
Here we report on the results obtained from an antiviral screening, including herpes simplex virus, vaccinia virus, vesicular stomatitis virus, Coxsackie B4 virus or respiratory syncytial virus, parainfluenza-3 virus, reovirus-1 and Punta Toro virus, of three 2-hydroxy-3-methoxyphenyl acylhydrazone compounds in three cell lines (i.e. human embryonic lung fibroblast cells, human cervix carcinoma cells, and African Green monkey kidney cells). Interesting antiviral EC50 values are obtained against herpes simplex virus-1 and vaccinia virus...
December 5, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/29208790/oral-manifestation-in-patients-diagnosed-with-dermatological-diseases
#14
Sanjay G Thete, Meena Kulkarni, Atul P Nikam, Tejashree Mantri, Dhiraj Umbare, Sushant Satdive, Dinraj Kulkarni
AIM: This study aimed to estimate the frequency of oral lesions in dermatological diseased patients attending the outpatient department of Pravara Rural Medical and Dental College and Hospital, Pravara Institute of Medical Sciences (Deemed University), Loni, Ahmednagar, Maharashtra, India, and the Department of Dermatology at Medical College, Ahmednagar, Maharashtra, India. MATERIALS AND METHODS: A cross-sectional hospital-based study was conducted in Loni from October 2013 to January 2014...
December 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/29206240/influence-of-an-immunodominant-herpes-simplex-virus-type-1-cd8-t-cell-epitope-on-the-target-hierarchy-and-function-of-subdominant-cd8-t-cells
#15
Benjamin R Treat, Sarah M Bidula, Srividya Ramachandran, Anthony J St Leger, Robert L Hendricks, Paul R Kinchington
Herpes simplex virus type 1 (HSV-1) latency in sensory ganglia such as trigeminal ganglia (TG) is associated with a persistent immune infiltrate that includes effector memory CD8+ T cells that can influence HSV-1 reactivation. In C57BL/6 mice, HSV-1 induces a highly skewed CD8+ T cell repertoire, in which half of CD8+ T cells (gB-CD8s) recognize a single epitope on glycoprotein B (gB498-505), while the remainder (non-gB-CD8s) recognize, in varying proportions, 19 subdominant epitopes on 12 viral proteins. The gB-CD8s remain functional in TG throughout latency, while non-gB-CD8s exhibit varying degrees of functional compromise...
December 4, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29205682/sibling-visitations-and-viral-infections-in-the-neonatal-intensive-care-unit
#16
Yuho Horikoshi, Kaoru Okazaki, Shigeko Miyokawa, Kazue Kinoshita, Hiroshi Higuchi, Junichi Suwa, Yuta Aizawa, Kahoru Fukuoka
BACKGROUND: Sibling visitations to the neonatal intensive care unit (NICU) are a part of family-centered care, which is now being increasingly endorsed as a positive development in patient care. However, sibling visitations pose a risk of viral infections such that many NICUs in Japan impose strict limits on the practice. The aim of our study was to assess whether sibling visitations to the NICU are related to an increase in the nosocomial viral infection rate. METHODS: This retrospective study was conducted between April 2012 and March 2017 at Tokyo Metropolitan Children's Medical Center in Japan...
December 5, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/29203577/hiv-and-herpes-simplex-virus-type-2-epidemiological-synergy-misguided-observational-evidence-a-modelling-study
#17
Ryosuke Omori, Nico Nagelkerke, Laith J Abu-Raddad
OBJECTIVES: To investigate whether observational studies of HIV and herpes simplex virus type 2 (HSV-2) infections have the capacity to assess the HIV/HSV-2 epidemiological synergy. METHODS: An individual-based Monte Carlo model was used to simulate HIV/HSV-2 epidemics in two scenarios: no HIV/HSV-2 biological interaction and HSV-2 seropositivity enhancing HIV acquisition. Cross-sectional observational studies were simulated by sampling individuals from the population to assess resulting crude and adjusted ORs of the HIV/HSV-2 association...
December 4, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/29203273/the-traditional-use-of-vachellia-nilotica-for-sexually-transmitted-diseases-is-substantiated-by-the-antiviral-activity-of-its-bark-extract-against-sexually-transmitted-viruses
#18
Manuela Donalisio, Valeria Cagno, Andrea Civra, Davide Gibellini, Giuseppina Musumeci, Massimo Rittà, Manik Ghosh, David Lembo
ETHNOPHARMACOLOGICAL RELEVANCE: Vachellia (Acacia) nilotica and other plants of this genus have been used in traditional medicine of Asian and African countries to treat many disorders, including sexually transmitted diseases, but few studies were performed to validate their anti-microbial and anti-viral activity against sexually transmitted infections. AIM OF THE STUDY: The present study was undertaken to explore whether the ethnomedical use of V.nilotica to treat genital lesions is substantiated by its antiviral activity against the human immunodeficiency virus (HIV), the herpes simplex virus (HSV) and the human papillomavirus (HPV)...
December 1, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29198810/short-duration-ocular-iontophoresis-of-ionizable-aciclovir-prodrugs-a-new-approach-to-treat-herpes-simplex-infections-in-the-anterior-and-posterior-segments-of-the-eye
#19
Yong Chen, Yogeshvar N Kalia
The objective was to investigate (trans)corneal and transscleral iontophoresis of biolabile amino acid ester prodrugs of aciclovir (ACV-X, X = Arg, Gly and Trp) as a means to increase ocular bioavailability of ACV. Prodrugs displayed tissue-dependent susceptibility to hydrolysis. Iontophoresis of ACV-Arg, ACV-Gly and ACV-Trp (5 mM, 0.5 mA/cm2) for 5 min followed by 55 min passive diffusion resulted in appreciable corneal deposition (21.5 ± 5.1, 14.1 ± 2.0 and 5.3 ± 0.6 nmol/cm2, respectively) and transcorneal permeation (13...
November 30, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29198180/converging-epidemics-of-sexually-transmitted-infections-and-bacterial-vaginosis-in-southern-african-female-adolescents-at-risk-of-hiv
#20
Shaun L Barnabas, Smritee Dabee, Jo-Ann S Passmore, Heather B Jaspan, David A Lewis, Shameem Z Jaumdally, Hoyam Gamieldien, Lindi Masson, Etienne Muller, Venessa D Maseko, Nonhlanhla Mkhize, Zizipho Mbulawa, Anna-Lise Williamson, Clive M Gray, Thomas J Hope, Francesca Chiodi, Janan Dietrich, Glenda Gray, Linda-Gail Bekker
Adolescents in Africa are at high risk for HIV infection, other sexually transmitted infections (STIs) and bacterial vaginosis (BV). Since behavior and burden of STIs/BV may influence HIV risk, behavioral risk factors and prevalence of STIs/BV were compared in HIV-seronegative adolescent females (n = 298; 16-22 years) from two South African communities (Soweto and Cape Town). STIs ( Chlamydia trachomatis, Neisseria gonorrhoeae, Trichomonas vaginalis, Mycoplasma genitalium, herpes simplex virus (HSV)-1, HSV-2, Treponema pallidum, and Haemophilus ducreyi) were detected by multiplex polymerase chain reaction, human papillomavirus (HPV) by Roche Linear Array, and BV by Nugent scoring...
January 1, 2017: International Journal of STD & AIDS
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