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https://www.readbyqxmd.com/read/28626363/hoxb4-increases-runx1-expression-to-promote-the-de-novo-formation-of-multipotent-hematopoietic-cells
#1
Nadine Teichweyde, Peter A Horn, Hannes Klump
BACKGROUND: The de novo generation of patient-specific hematopoietic stem and progenitor cells from induced pluripotent stem cells (iPSCs) has become a promising approach for cell replacement therapies in the future. However, efficient differentiation protocols for producing fully functional human hematopoietic stem cells are still missing. In the mouse model, ectopic expression of the human homeotic selector protein HOXB4 has been shown to enforce the development of hematopoietic stem cells (HSCs) in differentiating pluripotent stem cell cultures...
June 2017: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/28624199/engineering-next-generation-bet-independent-mlv-vectors-for-safer-gene-therapy
#2
Sara El Ashkar, Dominique Van Looveren, Franziska Schenk, Lenard S Vranckx, Jonas Demeulemeester, Jan De Rijck, Zeger Debyser, Ute Modlich, Rik Gijsbers
Retroviral vectors have shown their curative potential in clinical trials correcting monogenetic disorders. However, therapeutic benefits were compromised due to vector-induced dysregulation of cellular genes and leukemia development in a subset of patients. Bromodomain and extraterminal domain (BET) proteins act as cellular cofactors that tether the murine leukemia virus (MLV) pre-integration complex to host chromatin via interaction with the MLV integrase (IN) and thereby define the typical gammaretroviral integration distribution...
June 16, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28620107/cicalese-mp-ferrua-f-castagnaro-l-et-al-update-on-the-safety-and-efficacy-of-retroviral-gene-therapy-for-immunodeficiency-due-to-adenosine-deaminase-deficiency-blood-2016-128-1-45-54
#3
https://www.readbyqxmd.com/read/28619387/evaluation-of-ameliorative-ability-of-silibinin-against-zidovudine-and-isoniazid-induced-hepatotoxicity-and-hyperlipidaemia-in-rats-role-of-silibinin-in-phase-i-and-ii-drug-metabolism
#4
Raghu Ramanathan, Karthikeyan Sivanesan
HIV/AIDS patients have suppressed immune system, making them vulnerable to many opportunistic infections including tuberculosis (TB). The patients who are co-infected with TB undergo combined regimens with anti-retroviral drugs such as zidovudine (AZT) and anti-tubercular drug such as isoniazid (INH) for therapy leading to hepatotoxicty. Silibinin (SBN), extracted from Silybum marianum commonly called as "Milk thistle" is used against several drugs-induced hepatotoxicity. The present study evaluates the ameliorative effect of SBN against AZT alone, INH alone, and INH + AZT-induced toxic insults to liver of rats...
June 13, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28618265/making-the-mark-the-role-of-adenosine-modifications-in-the-life-cycle-of-rna-viruses
#5
REVIEW
Sarah R Gonzales-van Horn, Peter Sarnow
Viral epitranscriptomics is a newly emerging field that has identified unique roles for RNA modifications in modulating life cycles of RNA viruses. Despite the observation of a handful of modified viral RNAs five decades ago, very little was known about how these modifications regulate viral life cycles, until recently. Here we review the pro- and anti-viral effects of methyl-6-adenosine in distinct viral life cycles, the role of 2' O-methyl modifications in RNA stability and innate immune sensing, and functions of adenosine to inosine modifications in retroviral life cycles...
June 14, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28592989/outcome-of-hiv-associated-lymphoma-in-a-resource-limited-setting-of-jos-nigeria
#6
Olugbenga Akindele Silas, Chad J Achenbach, Lifang Hou, Robert L Murphy, Julie O Egesie, Solomon A Sagay, Oche O Agbaji, Patricia E Agaba, Jonah Musa, Agabus N Manasseh, Ezra D Jatau, Ayuba M Dauda, Maxwell O Akanbi, Barnabas M Mandong
BACKGROUND: Lymphoma is a leading cause of cancer-related death among human immunodeficiency virus (HIV)-infected individuals in the current era of potent anti-retroviral therapy (ART). Globally, mortality after HIV-associated lymphoma has profound regional variation. Little is known about HIV-associated lymphoma mortality in Nigeria and other resource-limited setting in sub-Saharan Africa. Therefore, we evaluated the all-cause mortality after lymphoma and associated risk factors including HIV at the Jos University Teaching Hospital (JUTH) Nigeria...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28588778/rexin-g-%C3%A2-a-tumor-targeted-retrovector-for-malignant-peripheral-nerve-sheath-tumor-a-case-report
#7
Seth Kim, Noah Federman, Erlinda M Gordon, Frederick L Hall, Sant P Chawla
Soft tissue sarcoma is a rare neoplasm of mesenchymal origin, accounting for only ~1% of all adult cancers and consisting of 75 histological subtypes. In the present report, the unique case of a 14 year-old female with metastatic malignant peripheral nerve sheath tumor (formerly, malignant melanotic schwannoma) of the parotid gland, who experienced a durable response and sustained tumor control with Rexin-G(®), a tumor-targeted retroviral expression vector encoding an anti-cyclin G1 construct, is described...
June 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28578326/targeting-jurkat-t-lymphocyte-leukemia-cells-by-an-engineered-interferon-alpha-hybrid-molecule
#8
Dehai Yu, Zhonghua Du, Wei Li, Huaqiu Chen, Songgen Ye, Andrew R Hoffman, Jiuwei Cui, Ji-Fan Hu
BACKGROUND/AIMS: Adult T-cell leukemia/lymphoma (ATL) is a very aggressive T cell malignancy that carries a poor prognosis, primarily due to its resistance to chemotherapy and to life-threatening infectious complications. Interferon-alpha (IFNα) has been used in combination with the anti-retroviral drug zidovudine to treat patients with ATL. However, the efficacy of long-term therapy is significantly limited due to the systemic toxicity of IFNα. METHODS: We utilized phage display library screening to identify short peptides that specifically bind to Jurkat T lymphocyte leukemia cells...
June 5, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28574336/early-infant-diagnosis-of-hiv-in-myanmar-call-for-innovative-interventions-to-improve-uptake-and-reduce-turnaround-time
#9
Soe Thiha, Hemant Deepak Shewade, Sairu Philip, Thet Ko Aung, Nang Thu Thu Kyaw, Myo Minn Oo, Khine Wut Yee Kyaw, May Wint War, Htun Nyunt Oo
BACKGROUND: In collaboration with the national AIDS program, early infant diagnosis (EID) is implemented by Integrated HIV Care (IHC) program through its anti-retroviral therapy (ART) centers across 10 cities in five states and regions of Myanmar. Blood samples from the ART centers are sent using public transport to a centralized PCR facility. OBJECTIVES: Among HIV-exposed babies <9 months at enrolment into IHC program (2013-15), to describe the EID cascade (enrolment, sample collection for PCR, result receipt by mother, HIV diagnosis and ART initiation) and factors associated with delayed (>8 weeks of age) or no blood sample collection for EID...
2017: Global Health Action
https://www.readbyqxmd.com/read/28569216/potent-and-reversible-lentiviral-vector-restriction-in-murine-induced-pluripotent-stem-cells
#10
Franziska K Geis, Melanie Galla, Dirk Hoffmann, Johannes Kuehle, Daniela Zychlinski, Tobias Maetzig, Juliane W Schott, Adrian Schwarzer, Christine Goffinet, Stephen P Goff, Axel Schambach
BACKGROUND: Retroviral vectors are derived from wild-type retroviruses, can be used to study retrovirus-host interactions and are effective tools in gene and cell therapy. However, numerous cell types are resistant or less permissive to retrovirus infection due to the presence of active defense mechanisms, or the absence of important cellular host co-factors. In contrast to multipotent stem cells, pluripotent stem cells (PSC) have potential to differentiate into all three germ layers...
May 31, 2017: Retrovirology
https://www.readbyqxmd.com/read/28550091/transgenic-expression-of-il15-improves-antiglioma-activity-of-il13ralpha2-car-t-cells-but-results-in-antigen-loss-variants
#11
Giedre Krenciute, Brooke L Prinzing, Zhongzhen Yi, Meng-Fen Wu, Hao Liu, Gianpietro Dotti, Irina V Balyasnikova, Stephen Gottschalk
Glioblastoma (GBM) is the most aggressive primary brain tumor in adults and is virtually incurable with conventional therapies. Immunotherapy with T cells expressing GBM-specific chimeric antigen receptors (CARs) is an attractive approach to improve outcomes. Although CAR T cells targeting GBM antigens such as IL13Ralpha2 (interleukin 13 Receptor Subunit Alpha 2), HER2 (human epidermal growth factor receptor 2), and EGFRvIII (epidermal growth factor receptor variant III) have had antitumor activity in preclinical models, early phase clinical testing has demonstrated limited antiglioma activity...
May 26, 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28549121/long-acting-injectable-anti-retroviral-therapy-an-opportunity-to-improve-hiv-treatment-and-reduce-hiv-transmission-among-persons-being-released-from-prison-facilities
#12
Lauren Brinkley-Rubinstein, David L Rosen, Paul Christopher, Lauri Bazerman, Curt G Beckwith
No abstract text is available yet for this article.
May 26, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28542255/detection-of-mycobacterium-tuberculosis-from-the-stool-of-hiv-sero-positive-individuals-suspected-of-pulmonary-tuberculosis
#13
Gizaw E Abaye, Tamrat Abebe, Adane Worku, Debela Tolessa, Gobena Ameni, Adane Mihret
BACKGROUND: The impact of tuberculosis (TB) is exacerbated in Africa because of the human immunodeficiency virus (HIV) pandemic. Pulmonary tuberculosis (PTB) diagnosis is difficult in HIV-infected patients and negative sputum results are more common which leads to diagnostic delay and increases morbidity and mortality. Extra-pulmonary samples such as stool may be easier to obtain and our approach may therefore significantly improve PTB detection in people living with HIV. OBJECTIVE: To detect Mycobacterium tuberculosis from the stool of HIV sero-positive individuals suspected of pulmonary TB...
2017: PloS One
https://www.readbyqxmd.com/read/28520146/association-of-tenofovir-disoproxil-fumarate-with-primary-allograft-survival-in-hiv-positive-kidney-transplant-recipients
#14
Suzanne M Boyle, Gregory Malat, Meera N Harhay, Dong H Lee, Lisa Pang, Sindhura Talluri, Akshay Sharma, Tiffany E Bias, Karthik Ranganna, Alden M Doyle
BACKGROUND: Tenofovir disoproxil fumarate (TDF) is an anti-retroviral agent frequently used to treat human immunodeficiency virus (HIV). There are concerns regarding its potential to cause acute kidney injury, chronic kidney disease, and proximal tubulopathy. Although TDF can effectively suppress HIV after kidney transplantation, it is unknown whether use of TDF-based anti-retroviral therapy (ART) after kidney transplant (KT) adversely affects allograft survival. METHODS: We examined 104 HIV+ KT recipients at our center between 2001 and 2014...
May 18, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28514280/ten-year-trends-in-anti-retroviral-therapy-persistence-among-us-medicaid-beneficiaries-2001-2010
#15
Bora Youn, Theresa I Shireman, Yoojin Lee, Omar Galárraga, Aadia I Rana, Amy C Justice, Ira B Wilson
OBJECTIVE: Whether the rate of HIV antiretroviral therapy (ART) persistence has improved over time in the U.S. is unknown. We examined ART persistence trends between 2001 and 2010, using non-HIV medications as a comparator. METHODS: We conducted a retrospective cohort study using Medicaid claims. We defined persistence as the duration of treatment from the first to the last fill date before a 90-day permissible gap, and used Kaplan-Meier curves and Cox proportional hazard models to assess crude and adjusted non-persistence...
May 16, 2017: AIDS
https://www.readbyqxmd.com/read/28507108/safety-pharmacokinetics-and_antiviral-activity-of-a-novel-hiv-antiviral-abx464-in-treatment-na%C3%A3-ve-hiv-infected-subjects-a-phase-ii-randomized-controlled-study
#16
Jean-Marc Steens, Didier Scherrer, Paul Gineste, P Noel Barrett, Supparatpino Kuanchai, Ratanasuwan Winai, Kiat Ruxrungtham, Jamal Tazi, Robert Murphy, Hartmut Ehrlich
We investigated the safety and anti-viral effects of an anti-HIV compound (ABX464) with a unique mechanism of viral replication inhibition. This was a randomized, double blind, placebo controlled, dose- ranging study in treatment naïve HIV infected patients. Participants were assigned to eight groups; each group included 8 subjects receiving either the study compound, ABX464 (n=6) or corresponding placebo (n=2), according to a randomization code. The first dose administered was 25 mg, given once or 3 times a day over a 2 to 3-week period...
May 15, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28506688/human-immunodeficiency-virus-and-fungal-infections
#17
REVIEW
Jeannette Guarner
The discovery of HIV was largely due to the presence of Pneumocystis pneumonia (PCP) in young patients that did not have the usual known causes of immune deficiencies in the early 1980s. Currently, treatment with highly active anti-retroviral therapy (HAART) and the use of prophylaxis for PCP have lowered the frequency of fungal infections; however, these infections continue to cause morbidity and mortality in those patients that fall out or are not in care. The frequency of specific fungal diseases in HIV patients will depend on the prevalence of fungi in the particular geographic location...
April 8, 2017: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/28505204/compartment-specific-distribution-of-human-intestinal-innate-lymphoid-cells-is-altered-in-hiv-patients-under-effective-therapy
#18
Benjamin Krämer, Felix Goeser, Philipp Lutz, Andreas Glässner, Christoph Boesecke, Carolynne Schwarze-Zander, Dominik Kaczmarek, Hans Dieter Nischalke, Vittorio Branchi, Steffen Manekeller, Robert Hüneburg, Tobias van Bremen, Tobias Weismüller, Christian P Strassburg, Jürgen K Rockstroh, Ulrich Spengler, Jacob Nattermann
Innate lymphocyte cells (ILCs), a novel family of innate immune cells are considered to function as key orchestrators of immune defences at mucosal surfaces and to be crucial for maintaining an intact intestinal barrier. Accordingly, first data suggest depletion of ILCs to be involved in human immunodeficiency virus (HIV)-associated damage of the intestinal mucosa and subsequent microbial translocation. However, although ILCs are preferentially localized at mucosal surfaces, only little is known regarding distribution and function of ILCs in the human gastrointestinal tract...
May 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28505168/development-and-validation-of-reversed-phase-hplc-gradient-method-for-the-estimation-of-efavirenz-in-plasma
#19
Shweta Gupta, Rajesh Kesarla, Narendra Chotai, Abdelwahab Omri
Efavirenz is an anti-viral agent of non-nucleoside reverse transcriptase inhibitor category used as a part of highly active retroviral therapy for the treatment of infections of human immune deficiency virus type-1. A simple, sensitive and rapid reversed-phase high performance liquid chromatographic gradient method was developed and validated for the determination of efavirenz in plasma. The method was developed with high performance liquid chromatography using Waters X-Terra Shield, RP18 50 x 4.6 mm, 3.5 μm column and a mobile phase consisting of phosphate buffer pH 3...
2017: PloS One
https://www.readbyqxmd.com/read/28494859/hiv-reprograms-human-airway-basal-stem-progenitor-cells-to-acquire-a-tissue-destructive-phenotype
#20
Nancy P Y Chung, Xuemei Ou, K M Faisal Khan, Jacqueline Salit, Robert J Kaner, Ronald G Crystal
While highly active anti-retroviral therapy has dramatically improved the survival of HIV-infected individuals, there is an increased risk for other co-morbidities, such as COPD, manifesting as emphysema. Given that emphysema originates around the airways and that human airway basal cells (BCs) are adult airway stem/progenitor cells, we hypothesized that HIV reprograms BCs to a distinct phenotype that contributes to the development of emphysema. Our data indicate that HIV binds to but does not replicate in BCs...
May 9, 2017: Cell Reports
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