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https://www.readbyqxmd.com/read/28931237/histone-methyltransferase-set8-epigenetically-reprograms-host-immune-responses-to-assist-mycobacterial-survival
#1
Vikas Singh, Praveen Prakhar, R S Rajmani, Kasturi Mahadik, Salik Miskat Borbora, Kithiganahalli Narayanaswamy Balaji
NQO1 and TRXR1 are important host reductases implicated in the regulation of inflammation and apoptosis. Although the transcriptional machinery governing these processes have been extensively investigated, the associated epigenetic regulatory events remain unclear. Here, we report that SET8, a histone H4 lysine 20 monomethylase (H4K20me1), is highly induced during Mycobacterium tuberculosis infection that orchestrates immune evasion strategies through the induction of NQO1 and TRXR1 in vivo. SET8, along with FoxO3a, mediates an active NQO1-PGC1-α complex, which promotes the anti-inflammatory M2 macrophage phenotype, and assists TRXR1-regulated arrest of tumor necrosis factor-related apoptosis-inducing ligand-induced apoptosis...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28931236/a-molecular-assay-to-quantify-male-and-female-plasmodium-falciparum-gametocytes-results-from-2-randomized-controlled-trials-using-primaquine-for-gametocyte-clearance
#2
Will Stone, Patrick Sawa, Kjerstin Lanke, Sanna Rijpma, Robin Oriango, Maureen Nyaurah, Paul Osodo, Victor Osoti, Almahamoudou Mahamar, Halimatou Diawara, Rob Woestenenk, Wouter Graumans, Marga van de Vegte-Bolmer, John Bradley, Ingrid Chen, Joelle Brown, Giulia Siciliano, Pietro Alano, Roly Gosling, Alassane Dicko, Chris Drakeley, Teun Bousema
Background: Single low-dose primaquine (PQ) reduces Plasmodium falciparum infectivity before it impacts gametocyte density. Here, we examined the effect of PQ on gametocyte sex ratio as a possible explanation for this early sterilizing effect. Methods: Quantitative reverse-transcription polymerase chain reaction assays were developed to quantify female gametocytes (targeting Pfs25 messenger RNA [mRNA]) and male gametocytes (targeting Pf3D7_1469900 mRNA) in 2 randomized trials in Kenya and Mali, comparing dihydroartemisinin-piperaquine (DP) alone to DP with PQ...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28931235/monoclonal-antibody-protects-against-acinetobacter-baumannii-infection-by-enhancing-bacterial-clearance-and-evading-sepsis
#3
Travis B Nielsen, Paul Pantapalangkoor, Brian M Luna, Kevin W Bruhn, Jun Yan, Ken Dekitani, Sarah Hsieh, Brandon Yeshoua, Bryan Pascual, Evgeny Vinogradov, Kristine M Hujer, T Nicholas Domitrovic, Robert A Bonomo, Thomas A Russo, Magda Lesczcyniecka, Thomas Schneider, Brad Spellberg
Background: Extremely drug-resistant (XDR) Acinetobacter baumannii is one of the most commonly encountered, highly resistant pathogens requiring novel therapeutic interventions. Methods: We developed C8, a monoclonal antibody (mAb), by immunizing mice with sublethal inocula of a hypervirulent XDR clinical isolate. Results: C8 targets capsular carbohydrate on the bacterial surface, enhancing opsonophagocytosis. Treating with a single dose of C8 as low as 0...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28931222/the-role-of-human-immunodeficiency-virus-associated-vasculopathy-in-the-etiology-of-stroke
#4
Laura A Benjamin, Theresa J Allain, Henry Mzinganjira, Myles D Connor, Colin Smith, Sebastian Lucas, Elizabeth Joekes, Sam Kampondeni, Karen Chetcuti, Ian Turnbull, Mark Hopkins, Steve Kamiza, Elizabeth L Corbett, Robert S Heyderman, Tom Solomon
Background: Human immunodeficiency virus (HIV) infection is a recognized risk factor for stroke among young populations, but the exact mechanisms are poorly understood. We studied the clinical, radiologic, and histologic features of HIV-related ischemic stroke to gain insight into the disease mechanisms. Methods: We conducted a prospective, in-depth analysis of adult ischemic stroke patients presenting to Queen Elizabeth Central Hospital, Blantyre, Malawi, in 2011...
September 1, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28931216/emergence-of-oseltamivir-resistant-h7n9-influenza-viruses-in-immunosuppressed-cynomolgus-macaques
#5
Maki Kiso, Kiyoko Iwatsuki-Horimoto, Seiya Yamayoshi, Ryuta Uraki, Mutsumi Ito, Noriko Nakajima, Shinya Yamada, Masaki Imai, Eiryo Kawakami, Yuriko Tomita, Satoshi Fukuyama, Yasushi Itoh, Kazumasa Ogasawara, Tiago J S Lopes, Tokiko Watanabe, Louise H Moncla, Hideki Hasegawa, Thomas C Friedrich, Gabriele Neumann, Yoshihiro Kawaoka
Antiviral compounds (eg, the neuraminidase inhibitor oseltamivir) are invaluable for the treatment of individuals infected with influenza A viruses of the H7N9 subtype (A[H7N9]), which have infected and killed hundreds of persons. However, oseltamivir treatment often leads to the emergence of resistant viruses in immunocompromised individuals. To better understand the emergence and properties of oseltamivir-resistant A(H7N9) viruses in immunosuppressed individuals, we infected immunosuppressed cynomolgus macaques with an A(H7N9) virus and treated them with oseltamivir...
September 1, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28931212/temozolomide-resistant-human-brain-tumor-stem-cells-are-susceptible-to-recombinant-vesicular-stomatitis-virus-and-double-deleted-vaccinia-virus-in-vitro
#6
Bin Jiang, Xueqing Lun, Xiaoguang Hao, Yihua Wang, Xin Yin, Dezhang Huang, Wei He, Zhigang Wang
BACKGROUND: Malignant glioma still has a poor prognosis and remains incurable. Although temozolomide (TMZ) has demonstrated antitumor activity, its use recently has been halted because of some patients' resistance to this drug. New treatments are desperately needed. An oncolytic virus (virotherapy) is being developed as a novel cancer therapy. We have previously reported that recombinant Vesicular Stomatitis Virus (VSV-ΔM51) and double deleted Vaccinia Virus (vvDD) infected and killed glioma cell lines in vitro and prolonged survival in animal glioma models...
September 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28931145/medical-and-psychological-problems-faced-by-young-australian-gap-year-travellers
#7
Luis Furuya-Kanamori, Deborah Mills, Sarah Sheridan, Colleen Lau
Background: Gap year travellers can potentially be exposed to many infectious diseases and other travel-related health problems including injuries and psychological problems. Currently, there is little information on health and wellbeing of this particular group of travellers. Methods: Participants were recruited from an organization that specialized in organising international gap year placements. Gap year travellers were asked to complete a pre-departure survey on demographics, placement destination and duration, previous travel experience, hobbies, risk taking behaviour, anticipated problems during the placement, and pre-travel preparations...
September 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28930979/analysis-of-18fdg-pet-ct-imaging-as-a-tool-for-studying-mycobacterium-tuberculosis-infection-and-treatment-in-non-human-primates
#8
Alexander G White, Pauline Maiello, M Teresa Coleman, Jaime A Tomko, L James Frye, Charles A Scanga, Philana Ling Lin, JoAnne L Flynn
Mycobacterium tuberculosis remains the number one infectious agent in the world today. With the emergence of antibiotic resistant strains, new clinically relevant methods are needed that evaluate the disease process and screen for potential antibiotic and vaccine treatments. Positron Emission Tomography/Computed Tomography (PET/CT) has been established as a valuable tool for studying a number of afflictions such as cancer, Alzheimer's disease, and inflammation/infection. Outlined here are a number of strategies that have been employed to evaluate PET/CT images in cynomolgus macaques that are infected intrabronchially with low doses of M...
September 5, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930915/microvesicle-subsets-in-sepsis-due-to-community-acquired-pneumonia-compared-to-faecal-peritonitis
#9
Hazem M S Lashin, Suchita Nadkarni, Silvia Oggero, Hefin R Jones, Julian C Knight, Charles J Hinds, Mauro Perretti
RATIONALE: Microvesicles (MV) act as a non-soluble means of inter-cellular communication, with effector roles in disease pathogenesis and potentially as biomarkers. Previously, we reported that neutrophil MV expressing alpha-2-macroglobulin (A2MG) are protective in experimental sepsis and associate with survival in a small cohort of patients with sepsis due to community acquired pneumonia (CAP). OBJECTIVES: To characterise MV profiles in sepsis due to CAP or faecal peritonitis (FP) and determine their relation to outcome...
September 19, 2017: Shock
https://www.readbyqxmd.com/read/28930847/guillain-barr%C3%A3-like-axonal-polyneuropathy-associated-with-toscana-virus-infection-a-case-report
#10
Eugenia Rota, Nicola Morelli, Paolo Immovilli, Paola De Mitri, Donata Guidetti
RATIONALE: Numerous cases of post-infectious Guillain-Barré syndrome (GBS) have been reported in the literature. Toscana virus (TOSV) is an arthropod-borne emerging pathogen in the Mediterranean area. PATIENT CONCERNS: A 40-year-old male patient was admitted to hospital for acute facial weakness, associated to numbness paraesthesias at lower and upper limbs. The neurological examination revealed facial diplegia and reduced tendon reflexes. The nerve conduction studies documented an acute motor and sensory axonal neuropathy (AMSAN); the lumbar puncture detected albuminocytologic dissociation...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28930616/development-of-a-semi-automated-image-based-high-throughput-drug-screening-system
#11
Remzi Onur Eren, Dmitry Kopelyanskiy, Dimitri Moreau, Julien Bortoli Chapalay, Marc Chambon, Gerardo Turcatti, Lon-Fye Lye, Stephen M Beverley, Nicolas Fasel
We previously reported that the innate sensing of the endosymbiont Leishmania RNA virus 1 (LRV1) within Leishmania (Viannia) guyanensis through Toll-like receptor 3, worsens the pathogenesis of parasite infection in mice. The presence of LRV1 has been associated with the failure of first-line treatment in patients infected with LRV1 containing -L. guyanensis and -L. braziliensis parasites. Here, we established a semi-automated image-based high-throughput drug screening (HTDS) protocol to measure parasiticidal activity of the Prestwick chemical library in primary murine macrophages infected with LRV1-containing L...
January 1, 2018: Frontiers in Bioscience (Elite Edition)
https://www.readbyqxmd.com/read/28930604/therapeutic-startegies-for-human-papillomavirus-infection-and-associated-cancers
#12
Alok Chandra Bharti, Tejveer Singh, Anjali Bhat, Deepti Pande, Mohit Jadli
Human papillomavirus (HPV) infection is linked to development of cancer of cervix, vagina, vulva, penis, ano-genital and non-genital oro-pharyngeal sites. HPV being a sexually transmitted virus infects both genders equally but with higher chances of pathological outcome in women. In the absence of organized screening programs, women report HPV-infected lesions at relatively advanced stages where they are subjected to standard treatments that are not HPV-specific. HPV infection-driven lesions usually take 10-20 years for malignant progression and are preceded by well-characterized pre-cancer stages...
January 1, 2018: Frontiers in Bioscience (Elite Edition)
https://www.readbyqxmd.com/read/28930584/metal-and-metalloid-containing-drugs-for-the-treatment-of-trypanosomatid-diseases
#13
Gianni Colotti, Annarita Fiorillo, Andrea Ilari
The trypanosomatid-induced diseases are considered as neglected, because the countries where they kill people are not important markets for western big pharmaceutical companies. However, recently some effort has been made to translate the use of already known drugs to neglected infectious disease. Although many metals are essential to life, many disorders affecting metal homeostasis and bioavailability are responsible for several human diseases. Metals can be toxic even at very low concentrations and semimetals are classified as toxic and dangerous for the environment...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28930583/ibuprofen-as-a-template-molecule-for-drug-design-against-ebola-virus
#14
Slobodan Paessler, Cheng Huang, Milan Sencanski, Nevena Veljkovic, Vladimir Perovic, Sanja Glisic, Veljjko Veljkovic
The Ebola virus outbreak in West Africa 2015 and Congo 2017, point out an urgent need for development of drugs against this important pathogen. Previously, by repurposing virtual screening of 6438 drugs from DrugBank, ibuprofen was selected as a possible inhibitor of the Ebola virus infection. The results of an additional docking analysis as well as experimental results showing measurable anti-Ebola effect of ibuprofen in cell culture suggest ibuprofen as a promising molecular template for the development of drugs for treatment of the infection by Ebola virus...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28930567/molecular-mechanisms-of-chlamydia-trachomatis-resistance-to-antimicrobial-drugs
#15
Tomislav Mestrovic, Suncanica Ljubin-Sternak
Chlamydia trachomatis (C. trachomatis) is a leading cause of bacterial sexually transmitted infections in developed and undeveloped countries, and therefore a global public health issue. In an era of increasing bacterial resistance to antibiotics, resistance has been an exceedingly rare phenomenon in C. trachomatis; however, clinical treatment failures attributed to multidrug-resistant C. trachomatis strains have been described on several occasions. Cell culture systems using McCoy cells and subsequent immunofluorescent staining are still the most common methodology used for antimicrobial susceptibility testing, but the presence of resistance markers should be appraised by further genetic analysis...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28930559/histone-deacetylase-a-potential-therapeutic-target-for-ovarian-dysfunction
#16
Sunita Sunita, Pankaj Kumar Singh, Suneel Kumar Onteru, Dheer Singh
Post-partum uterine disorders and reproductive tract infections cause ovarian dysfunction and infertility. Histone deacetylases (HDACs) prevent the relaxation of chromatin, and positively or negatively regulate transcription. Hence, HDACs play a pivotal role in altering the gene expression that impact different signalling pathways underling ovarian dysfunction. Thus, HDAC inhibitors (HDACi) may act as potential therapeutic targets in the treatment of an array of disorders impacting ovarian function.
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28930519/divergent-impact-of-gender-in-advancement-of-liver-injuries-diseases-and-carcinogenesis
#17
Subhrajit Biswas, Sampa Ghose
Several investigations have revealed that liver diseases exhibit gender biases, but identifying the root causes of such biases has been challenging. Evidence of gender differences in liver function is present from the early stage of embryonic development. The differences in access to care and treatment as well as diagnostic deliberation may affect gender-specific differences in liver disease progression. Apart from the pathogenesis, xenobiotic metabolism, immune responses, gene expressions, mitochondrial function, lipid composition, and enzyme activities also differ in this sexually dimorphic organ...
January 1, 2018: Frontiers in Bioscience (Scholar Edition)
https://www.readbyqxmd.com/read/28930494/simplify-1-a-phase-iii-randomized-trial-of-momelotinib-versus-ruxolitinib-in-janus-kinase-inhibitor-na%C3%A3-ve-patients-with-myelofibrosis
#18
Ruben A Mesa, Jean-Jacques Kiladjian, John V Catalano, Timothy Devos, Miklos Egyed, Andrzei Hellmann, Donal McLornan, Kazuya Shimoda, Elliott F Winton, Wei Deng, Ronald L Dubowy, Julia D Maltzman, Francisco Cervantes, Jason Gotlib
Purpose We evaluated the efficacy and safety of momelotinib, a potent and selective Janus kinase 1 and 2 inhibitor (JAKi), compared with ruxolitinib, in JAKi-naïve patients with myelofibrosis. Patients and Methods Patients (N = 432) with high risk or intermediate-2 risk or symptomatic intermediate-1 risk myelofibrosis were randomly assigned to receive 24 weeks of treatment with momelotinib 200 mg once daily or ruxolitinib 20 mg twice a day (or per label), after which all patients could receive open-label momelotinib...
September 20, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28930287/exposure-to-human-alveolar-lining-fluid-enhances-mycobacterium-bovis-bcg-vaccine-efficacy-against-mycobacterium-tuberculosis-infection-in-a-cd8-t-cell-dependent-manner
#19
J I Moliva, A P Hossfeld, C H Canan, V Dwivedi, M D Wewers, G Beamer, J Turner, J B Torrelles
Current tuberculosis (TB) treatments include chemotherapy and preventative vaccination with Mycobacterium bovis Bacillus Calmette-Guérin (BCG). In humans, however, BCG vaccination fails to fully protect against pulmonary TB. Few studies have considered the impact of the human lung mucosa (alveolar lining fluid (ALF)), which modifies the Mycobacterium tuberculosis (M.tb) cell wall, revealing alternate antigenic epitopes on the bacterium surface that alter its pathogenicity. We hypothesized that ALF-induced modification of BCG would induce better protection against aerosol infection with M...
September 20, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28930224/aromatic-medicinal-plants-of-the-lamiaceae-family-from-uzbekistan-ethnopharmacology-essential-oils-composition-and-biological-activities
#20
REVIEW
Nilufar Z Mamadalieva, Davlat Kh Akramov, Elisa Ovidi, Antonio Tiezzi, Lutfun Nahar, Shahnoz S Azimova, Satyajit D Sarker
Plants of the Lamiaceae family are important ornamental, medicinal, and aromatic plants, many of which produce essential oils that are used in traditional and modern medicine, and in the food, cosmetics, and pharmaceutical industry. Various species of the genera Hyssopus, Leonurus, Mentha, Nepeta, Origanum, Perovskia, Phlomis, Salvia, Scutellaria, and Ziziphora are widespread throughout the world, are the most popular plants in Uzbek traditional remedies, and are often used for the treatment of wounds, gastritis, infections, dermatitis, bronchitis, and inflammation...
February 10, 2017: Medicines (Basel, Switzerland)
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