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https://www.readbyqxmd.com/read/29352633/current-concerns-and-perspectives-on-zika-virus-co-infection-with-arboviruses-and-hiv
#1
REVIEW
Hussin A Rothan, Mehdi R M Bidokhti, Siddappa N Byrareddy
Dissemination of vector-borne viruses, such as Zika virus (ZIKV), in tropical and sub-tropical regions has a complicated impact on the immunopathogenesis of other endemic viruses such as dengue virus (DENV), chikungunya virus (CHIKV) and human immunodeficiency virus (HIV). The consequences of the possible co-infections with these viruses have specifically shown significant impact on the treatment and vaccination strategies. ZIKV is a mosquito-borne flavivirus from African and Asian lineages that causes neurological complications in infected humans...
January 16, 2018: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29352225/a-humanized-mouse-model-of-liver-fibrosis-following-expansion-of-transplanted-hepatic-stellate-cells
#2
Daniel Benten, Johannes Kluwe, Jan W Wirth, Nina D Thiele, Antonia Follenzi, Kuldeep K Bhargava, Christopher J Palestro, Michael Koepke, Reni Tjandra, Tassilo Volz, Marc Lutgehetmann, Sanjeev Gupta
Hepatic stellate cells (HSCs) are major contributors to liver fibrosis, as hepatic injuries may cause their transdifferentiation into myofibroblast-like cells capable of producing excessive extracellular matrix proteins. Also, HSCs can modulate engraftment of transplanted hepatocytes and contribute to liver regeneration. Therefore, understanding the biology of human HSCs (hHSCs) is important, but effective methods have not been available to address their fate in vivo. To investigate whether HSCs could engraft and repopulate the liver, we transplanted GFP-transduced immortalized hHSCs into immunodeficient NOD/SCID mice...
January 19, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29352135/blocking-zika-virus-vertical-transmission
#3
Pinar Mesci, Angela Macia, Spencer M Moore, Sergey A Shiryaev, Antonella Pinto, Chun-Teng Huang, Leon Tejwani, Isabella R Fernandes, Nicole A Suarez, Matthew J Kolar, Sandro Montefusco, Scott C Rosenberg, Roberto H Herai, Fernanda R Cugola, Fabiele B Russo, Nicholas Sheets, Alan Saghatelian, Sujan Shresta, Jeremiah D Momper, Jair L Siqueira-Neto, Kevin D Corbett, Patricia C B Beltrão-Braga, Alexey V Terskikh, Alysson R Muotri
The outbreak of the Zika virus (ZIKV) has been associated with increased incidence of congenital malformations. Although recent efforts have focused on vaccine development, treatments for infected individuals are needed urgently. Sofosbuvir (SOF), an FDA-approved nucleotide analog inhibitor of the Hepatitis C (HCV) RNA-dependent RNA polymerase (RdRp) was recently shown to be protective against ZIKV both in vitro and in vivo. Here, we show that SOF protected human neural progenitor cells (NPC) and 3D neurospheres from ZIKV infection-mediated cell death and importantly restored the antiviral immune response in NPCs...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352127/structural-covariance-of-gray-matter-volume-in-hiv-vertically-infected-adolescents
#4
Jielan Li, Lei Gao, Zhi Wen, Jing Zhang, Panying Wang, Ning Tu, Hao Lei, Fuchun Lin, Xi'en Gui, Guangyao Wu
Human immunodeficiency virus (HIV) infection significantly affect neurodevelopmental and behavioral outcomes. We investigated whether alterations of gray matter organization and structural covariance networks with vertical HIV infection adolescents exist, by using the GAT toolbox. MRI data were analysed from 25 HIV vertically infected adolescents and 33 HIV-exposed-uninfected control participants. The gray matter volume (GMV) was calculated, and structural brain networks were reconstructed from gray matter co-variance...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352044/resolution-of-spurious-immunonephelometric-igg-subclass-measurement-discrepancies-by-lc-ms-ms
#5
Grace van der Gugten, Mari L DeMarco, Luke Y C Chen, Alex Chin, Mollie Caruthers, Daniel T Holmes, Andre Mattman
BACKGROUND: The Binding Site immunonephelometric (IN) IgG subclass reagents (IgG1, IgG2, IgG3, IgG4, BSIN) are used for assessment of both immunodeficiency and IgG4-related disease (IgG4-RD). In our laboratory, suspected analytic errors were noted in patients with increases in IgG4: The sum of the individual IgG subclasses was substantially greater than the measured total IgG concentrations (unlike samples with normal IgG4), and the IgG4 concentration was always less than the IgG2 concentration...
January 19, 2018: Clinical Chemistry
https://www.readbyqxmd.com/read/29351766/efficacy-and-safety-of-sofosbuvir-containing-regimens-in-patients-co-infected-with-chronic-hepatitis-c-virus-and-human-immunodeficiency-virus-a-meta-analysis
#6
Guotao Li, Ke Zang, Guoqiang Zhang, Danyan Zhu, Xiaozhao Deng
BACKGROUND: The treatment of hepatitis C virus (HCV) in HCV/human immunodeficiency virus (HIV) co-infected patients remains complex. This present meta-analysis evaluated the efficacy and safety of Sofosbuvir (SOF) for treatment in HCV/HIV co-infected patients using the most recent and available data. METHODS: A systematic search of the published data was conducted in PubMed Medline, EMBASE and Cochrane databases. Eligible studies were clinical trials, case-control studies or prospective cohort studies aiming at assessing the efficacy and safety of the SOF-containing regimens in patients co-infected with HCV and HIV...
January 19, 2018: Virology Journal
https://www.readbyqxmd.com/read/29351333/simultaneous-quantification-of-four-antiretroviral-drugs-in-breast-milk-samples-from-hiv-positive-women-by-an-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry-uplc-ms-ms-method
#7
Alicia Ramírez-Ramírez, Elías Sánchez-Serrano, Giselle Loaiza-Flores, Noemí Plazola-Camacho, Rosa Georgina Rodríguez-Delgado, Ricardo Figueroa-Damián, Mauricio Domínguez-Castro, Margarita López-Martínez, Zayra Flores-García, Jessica Hernández-Pineda
The primary strategy to avoid mother-to-child transmission of human immunodeficiency virus (HIV) through breastfeeding is administration of highly active antiretroviral therapy (HAART) to HIV-positive pregnant women. Because significant changes in the pharmacokinetics of antiretroviral (ARV) drugs occur during pregnancy, quantifying HAART and the viral load in breast milk in this population is essential. Here, we developed an analytical assay for the simultaneous quantification of four ARV drugs in breast milk using ultra-performance liquid chromatography coupled to tandem mass spectrometry...
2018: PloS One
https://www.readbyqxmd.com/read/29351311/the-quality-of-voluntary-medical-male-circumcision-done-by-mid-level-workers-in-tshwane-district-south-africa-a-retrospective-analysis
#8
Sanele Ngcobo, Jacqueline Elizabeth Wolvaardt, Martin Bac, Elize Webb
BACKGROUND: Voluntary medical male circumcision (VMMC) reduces the acquisition of human immunodeficiency virus (HIV) in heterosexual men by up to 60%. One HIV infection is averted for every 5 to 15 VMMCs. To conduct VMMCs in large populations, large numbers of trained healthcare professionals are needed. Countries in Sub-Saharan Africa have a high burden of HIV and a shortage of healthcare professionals, creating a healthcare conundrum. To bridge this gap, South Africa launched a new cadre of mid-level medical worker called Clinical Associates (CA)...
2018: PloS One
https://www.readbyqxmd.com/read/29350111/sustained-viral-suppression-with-co-administration-of-oxcarbazepine-and-dolutegravir
#9
Manar M Kandil, Melissa E Badowski, Christopher A Schriever
Co-administration of dolutegravir and oxcarbazepine has been reported to reduce levels of dolutegravir and therefore is contraindicated due to insufficient data to make dosing recommendations. We present eight cases in which patients with human immunodeficiency virus (HIV) inadvertently received oxcarbazepine while concurrently receiving 50 mg of dolutegravir daily as part of their antiretroviral therapy. Upon further evaluation, lab results revealed that despite the risk of decreased levels of dolutegravir due to possible oxcarbazepine enzyme induction, patients maintained at or near virologic suppression (viral load <20 copies/ml)...
January 1, 2018: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/29349620/fatal-talaromyces-marneffei-infection-in-a-patient-with-autoimmune-hepatitis
#10
Sally C Y Wong, Siddharth Sridhar, Antonio H Y Ngan, Jonathan H K Chen, Rosana W S Poon, Susanna K P Lau, Patrick C Y Woo
Talaromyces marneffei, previously known as Penicillium marneffei, is the most important pathogenic thermally dimorphic fungus causing systemic mycosis in Southeast Asia. Traditionally, T. marneffei infection in human was mainly associated with acquired immunodeficiency syndrome caused by HIV infection. In recent years, there has been an increasing number of T. marneffei infections reported in non-HIV-infected patients with other immunocompromised conditions, including autoantibodies against interferon-gamma, systemic lupus erythematosis, solid organ transplantation, Job's syndrome, hematological malignancies, and use of novel targeted therapies...
January 18, 2018: Mycopathologia
https://www.readbyqxmd.com/read/29349578/in-situ-tissue-labeling-of-cerebral-amyloid-using-hiv-related-tat-peptide
#11
E Maderna, L Colombo, A Cagnotto, G Di Fede, A Indaco, F Tagliavini, M Salmona, G Giaccone
Delivering peptide-based drugs to the brain is a major challenge because of the existence of the blood-brain barrier (BBB). To overcome this problem, cell-penetrating peptides derived from proteins that are able to cross biological membranes have been used as cell-permeable and brain-penetrant compounds. An example is the transactivator of transcription protein transduction domain (Tat) of the human immunodeficiency virus. The basic domain of Tat is formed of arginine and lysine amino acid residues. Tat has been used as brain-penetrant carrier also in therapies for Alzheimer disease (AD), the most common form of dementia characterized by extracellular cerebral deposits of amyloid made up of Aβ peptide...
January 19, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29348988/anal-squamous-cell-carcinoma-in-a-patient-with-myasthenia-gravis-is-immunosuppression-the-main-underlying-etiology
#12
Muhammad Masab, Muhammad W Saif
Patients who are immunocompromised by diseases such as human immunodeficiency virus (HIV) infection are more prone to develop some malignancies such as Kaposi's sarcoma and central nervous system (CNS) lymphomas. Historically, anal squamous cell carcinoma (SCC) was also included on the list as an acquired immunodeficiency syndrome (AIDs)-defining cancer.  Similarly, compromised immune disorders including severe immunosuppression, haematologic malignancies, and solid organ transplantation have been identified as important risk factors for the development of anal SCC...
November 15, 2017: Curēus
https://www.readbyqxmd.com/read/29348731/problems-with-precaution-the-transfusion-medicine-experience
#13
Kumanan Wilson, Katherine M Atkinson, Dean A Fergusson, Adalsteinn Brown, Alan Forster, Malia S Q Murphy, Alan T Tinmouth, Jennifer Keelan
The precautionary principle is a dominant paradigm governing risk-based decision-making. Today, there are increasing pressures to re-examine aggressive precautionary approaches, and to assess how the principle should be applied in the modern system. In this paper, we examined three key applications of precautionary approaches in the field of transfusion medicine to provide insight into the risks and benefits of these approaches. The three case studies examined were the donor deferral policies to safeguard against transfusion transmission of human immunodeficiency virus, variant Creutzfeldt-Jacob disease, and, lastly, xenotropic murine leukemia virus-related virus...
2018: Journal of Risk Research
https://www.readbyqxmd.com/read/29348664/stress-induced-trbp-phosphorylation-enhances-its-interaction-with-pkr-to-regulate-cellular-survival
#14
Evelyn Chukwurah, Rekha C Patel
Transactivation response element RNA-binding protein (TRBP or TARBP2) initially identified to play an important role in human immunodeficiency virus (HIV) replication also has emerged as a regulator of microRNA biogenesis. In addition, TRBP functions in signaling pathways by negatively regulating the interferon-induced double-stranded RNA (dsRNA)-activated protein kinase (PKR) during viral infections and cell stress. During cellular stress, PKR is activated and phosphorylates the α subunit of the eukaryotic translation factor eIF2, leading to the cessation of general protein synthesis...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348316/evaluation-of-next-generation-anti-cd20-antibodies-labeled-with-zirconium-89-in-human-lymphoma-xenografts
#15
Jason T Yoon, Mark S Longtine, Bernadette V Marquez-Nostra, Richard L Wahl
Radioimmunotherapies with monoclonal antibodies (mAbs) to the B-lymphocyte antigen 20 (CD20) are effective treatments for B-cell lymphomas, but United States Food and Drug Administration (FDA)-approved radioimmunotherapies exclusively use radiolabeled murine antibodies, potentially limiting re-dosing. The FDA recently approved two unlabeled anti-CD20 monoclonal antibodies, obinutizumab and ofatumumab, termed "next generation" as they are humanized (obinituzumab) or fully human (ofatumumab), thus potentially allowing a greater potential for re-dosing than with previous generation anti-CD20 antibodies, including rituximab (chimeric) and tositumumab (murine) which contain more murine peptide sequences...
January 18, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29348280/marked-cachexia-in-probable-invasive-pulmonary-aspergillosis-with-bronchopleural-fistula
#16
Christiana Page, Laura Blazy, Melanie Jenkins, Rosalba Spiritoso
A 49-year-old man with a medical history of diabetes and heavy smoking was admitted to intensive care with severe bilateral pneumonia associated with marked cachexia. He developed a complex right-sided bronchopleural fistula and was transferred to our tertiary centre for consideration of surgical intervention.Despite escalation of antibiotic therapy, he did not improve and further investigations led to a diagnosis of invasive pulmonary aspergillosis. Definitive treatment plans required a right pneumonectomy; however, given the severity of cachexia, he remained unable to undergo such a large operation...
January 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29347817/biochemical-basis-of-apobec3-deoxycytidine-deaminase-activity-on-diverse-dna-substrates
#17
Madison B Adolph, Robin P Love, Linda Chelico
The Apolipoprotein B mRNA editing complex (APOBEC) family of enzymes are single-stranded polynucleotide cytidine deaminases. These enzymes catalyze the deamination of cytidine in RNA or single-stranded DNA, which forms uracil. From this eleven member enzyme family in humans, the deamination of single-stranded DNA by the seven APOBEC3 family members are considered here. The APOBEC3 family has many roles such as, restricting endogenous and exogenous retrovirus replication and retrotransposon insertion events and reducing DNA-induced inflammation...
January 18, 2018: ACS Infectious Diseases
https://www.readbyqxmd.com/read/29346443/exposure-to-previous-cart-is-associated-with-significant-liver-fibrosis-and-cirrhosis-in-human-immunodeficiency-virus-infected-patients
#18
Evrim Anadol, Kristina Lust, Christoph Boesecke, Carolynne Schwarze-Zander, Raphael Mohr, Jan-Christian Wasmuth, Jürgen Kurt Rockstroh, Jonel Trebicka
INTRODUCTION: Combined antiretroviral therapy (cART) has improved survival in HIV-patients. While the first antiretrovirals, which became available in particular D-drugs (especially didanosine and stavudine) and unboosted protease inhibitors, may impair liver function, the modern cART seems to decrease liver fibrosis. This study assessed the influence of exposure to previous antiretrovirals on liver fibrosis in HIV-infected patients. METHODS: This observational cross-sectional single-center study recruited 333 HIV patients and assessed liver fibrosis using transient elastography (TE)...
2018: PloS One
https://www.readbyqxmd.com/read/29346436/bone-marrow-concentrate-promotes-bone-regeneration-with-a-suboptimal-dose-of-rhbmp-2
#19
Kazuhiro Egashira, Yoshinori Sumita, Weijian Zhong, Takashi I, Seigo Ohba, Kazuhiro Nagai, Izumi Asahina
Bone marrow concentrate (BMC), which is enriched in mononuclear cells (MNCs) and platelets, has recently attracted the attention of clinicians as a new optional means for bone engineering. We previously reported that the osteoinductive effect of bone morphogenetic protein-2 (BMP-2) could be enhanced synergistically by co-transplantation of peripheral blood (PB)-derived platelet-rich plasma (PRP). This study aims to investigate whether BMC can effectively promote bone formation induced by low-dose BMP-2, thereby reducing the undesirable side-effects of BMP-2, compared to PRP...
2018: PloS One
https://www.readbyqxmd.com/read/29346424/higher-sequence-diversity-in-the-vaginal-tract-than-in-blood-at-early-hiv-1-infection
#20
Katja Klein, Gabrielle Nickel, Immaculate Nankya, Fred Kyeyune, Korey Demers, Emmanuel Ndashimye, Cynthia Kwok, Pai-Lien Chen, Sandra Rwambuya, Art Poon, Marshall Munjoma, Tsungai Chipato, Josaphat Byamugisha, Peter Mugyenyi, Robert A Salata, Charles S Morrison, Eric J Arts
In the majority of cases, human immunodeficiency virus type 1 (HIV-1) infection is transmitted through sexual intercourse. A single founder virus in the blood of the newly infected donor emerges from a genetic bottleneck, while in rarer instances multiple viruses are responsible for systemic infection. We sought to characterize the sequence diversity at early infection, between two distinct anatomical sites; the female reproductive tract vs. systemic compartment. We recruited 72 women from Uganda and Zimbabwe within seven months of HIV-1 infection...
January 2018: PLoS Pathogens
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