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https://www.readbyqxmd.com/read/28645089/drug-resistance-mechanism-of-l10f-l10f-n88s-and-l90m-mutations-in-crf01_ae-hiv-1-protease-molecular-dynamics-simulations-and-binding-free-energy-calculations
#1
C S Vasavi, Ramasamy Tamizhselvi, Punnagai Munusami
HIV-1 protease plays a crucial role in viral replication and maturation, which makes it one of the most attractive targets for anti-retroviral therapy. The majority of HIV infections in developing countries are due to non-B subtype. Subtype AE is spreading rapidly and infecting huge population worldwide. The mutations in the active site of subtype AE directly impair the interactions with the inhibitor. The non-active site mutations influence the binding of the inhibitor indirectly and their resistance mechanism is not well understood...
June 8, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28644063/morphological-and-molecular-characterization-of-metacercaria-of-tylodelphys-digenea-diplostomidae-from-the-piscine-host-mystus-tengara-from-india
#2
Anshu Chaudhary, Shivi Gupta, Chandni Verma, Richa Tripathi, Hridaya Shanker Singh
The diversity and taxonomy of diplostomids infecting freshwater fishes of the Indian region are predominantly poorly known. Yet compared to other trematodes, identification and discrimination of diplostomid metacercaria are difficult using morphology and site of infection. The present study provides the first molecular study of Tylodelphys sp. from India. Specimens of Tylodelphys were collected from the vitreous humor of the eyes and from the brains of siluriform fish, Mystus tengara (Siluriformes: Bagridae) from Hastinapur, Meerut (U...
June 23, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28643325/surface-expression-of-anti-cd3scfv-stimulates-locoregional-immunotherapy-against-hepatocellular-carcinoma-depending-on-the-e1a-engineered-human-umbilical-cord-mesenchymal-stem-cells
#3
Qing Zhang, Xiang-Fei Yuan, Yang Lu, Zhen-Zhen Li, Shi-Qi Bao, Xiao-Long Zhang, Yuan-Yuan Yang, Dong-Mei Fan, Yi-Zhi Zhang, Chen-Xuan Wu, Hong-Xing Guo, Yan-Jun Zhang, Ye Zhou, Dong-Sheng Xiong
Tumor antigens is at the core of cancer immunotherapy, however, the ideal antigen selection is difficult especially in poorly immunogenic tumors. In this study, we designed a strategy to modify hepatocellular carcinoma (HCC) cells by surface expressing anti-CD3scfv within the tumor site strictly, which depended on the E1A-engineered human umbilical cord mesenchymal stem cells (HUMSC.E1A) delivery system. Subsequently, membrane-bound anti-CD3scfv actived the lymphocytes which lysed HCC cells bypassing the expression of antigens or MHC restriction...
June 23, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28643099/-beyond-antibiotic-therapy-future-antiinfective-strategies-update-2017
#4
REVIEW
D Vogt, S Sperling, T Tkhilaishvili, A Trampuz, J-P Pirnay, C Willy
BACKGROUND: The key elements in the therapy of surgical site infections (SSI) are surgical debridement and local and systemic antibiotic therapy; however, due to increasing antibiotic resistance, the development of additional therapeutic measures is of great interest for future trauma and orthopedic surgery. METHOD: Against the background of our own experimental and clinical experiences and on the basis of the current literature, possible future anti-infective strategies were elaborated...
June 22, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28643098/-importance-of-wound-irrigation-solutions-and-fluids-with-antiseptic-effects-in-therapy-and-prophylaxis-update-2017
#5
REVIEW
Christian Willy, Catharina Scheuermann-Poley, Marcus Stichling, Thomas von Stein, Axel Kramer
INTRODUCTION: Despite the use of modern antibiotics as well as complex perioperative, intraoperative and postoperative prophylactic measures, the rate of surgical site infections (SSI) could not be significantly reduced. The introduction of biocompatible antiseptic drugs with a high microbiocidal effect provided a successful alternative for infection prevention and therapy, particularly in a time of increasing occurrence of multi-drug resistant pathogens. Hence, questions about the risk-benefit ratio of antiseptic wound irrigation solutions, the prophylactic use of wound irrigation solutions for the reduction of SSI and the effect of negative pressure wound therapy combined with instillation (NPWTi) need to be answered...
June 22, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28642820/intratumorally-injected-pro-inflammatory-allogeneic-dendritic-cells-as-immune-enhancers-a-first-in-human-study-in-unfavourable-risk-patients-with-metastatic-renal-cell-carcinoma
#6
Anna Laurell, Maria Lönnemark, Einar Brekkan, Anders Magnusson, Anna Tolf, Anna Carin Wallgren, Bengt Andersson, Lars Adamson, Rolf Kiessling, Alex Karlsson-Parra
BACKGROUND: Accumulating pre-clinical data indicate that the efficient induction of antigen-specific cytotoxic CD8+ T cells characterizing viral infections is caused by cross-priming where initially infected DCs produce an unique set of inflammatory factors that recruit and activate non-infected bystander DCs. Our DC-based immunotherapy concept is guided by such bystander view and accordingly, we have developed a cellular adjuvant consisting of pre-activated allogeneic DCs producing high levels of DC-recruiting and DC-activating factors...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28642674/an-automatic-3d-ct-pet-segmentation-framework-for-bone-marrow-proliferation-assessment
#7
Chuong Nguyen, Joseph Havlicek, Quyen Duong, Sara Vesely, Ronald Gress, Liza Lindenberg, Peter Choyke, Jennifer Holter Chakrabarty, Kirsten Williams
Clinical assessment of bone marrow is limited by an inability to evaluate the marrow space comprehensively and dynamically and there is no current method for automatically assessing hematopoietic activity within the medullary space. Evaluating the hematopoietic space in its entirety could be applicable in blood disorders, malignancies, infections, and medication toxicity. In this paper, we introduce a CT/PET 3D automatic framework for measurement of the hematopoietic compartment proliferation within osseous sites...
September 2016: Proceedings
https://www.readbyqxmd.com/read/28642272/networks-underpinning-symbiosis-revealed-through-cross-species-eqtl-mapping
#8
Yuelong Guo, Sylwia Fudali, Jacinta Gimeno, Peter DiGennaro, Stella Chang, Valerie M Williamson, David McK Bird, Dahlia M Nielsen
Organisms engage in extensive cross-species molecular dialogue, yet the underlying molecular actors are known for only a few interactions. Many techniques have been designed to uncover genes involved in signaling between organisms. Typically, these focus on only one of the partners. We developed an expression quantitative trait locus (eQTL) mapping-based approach to identify cause-and-effect relationships between genes from two partners engaged in an interspecific interaction. We demonstrated the approach by assaying expression of ninety-eight isogenic plants (Medicago truncatula), each inoculated with a genetically distinct line of the diploid parasitic nematode Meloidogyne hapla With this design, systematic differences in gene expression across host plants could be mapped to genetic polymorphisms of their infecting parasites...
June 22, 2017: Genetics
https://www.readbyqxmd.com/read/28642157/genome-comparisons-of-two-taiwanese-community-associated-methicillin-resistant-staphylococcus-aureus-st59-clones-support-the-multi-origin-theory-of-ca-mrsa
#9
Ye Feng, Hsiu-Ling Chen, Chih-Jung Chen, Chyi-Liang Chen, Cheng-Hsun Chiu
Sequence type (ST) 59 is an epidemic lineage of community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) in Asia. Two ST59 clones are prevalent in Taiwan: the Taiwan clone (TW) causes severe infections, whereas the Asian-Pacific clone (AP) is usually commensal. In this study, we sequenced the genome and transcriptome of the representative strains of these two clones and found their differences to focus on three mobile genetic elements: TW carries SCCmec Type VT, Panton-Valentine leucocidin (PVL)-encoding prophage ΦSa2, whereas AP carries SCCmec Type IV and staphylokinase (SAK)-encoding prophage ΦSa3...
June 19, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28642109/neoaortic-xenoprosthetic-grafts-for-treatment-of-mycotic-aneurysms-and-infected-aortic-grafts
#10
C Anibueze, V Sankaran, U Sadat, K Tan, Y G Wilson, R E Brightwell, M S Delbridge, P W Stather
OBJECTIVE: There is no international consensus regarding the optimum management of infected aortae (mycotic aneurysms, infected aortic grafts). Neoaortoiliac reconstruction has advantages over extra anatomical bypass grafting; however use of autologous vein is associated with venous hypertension and compartment syndrome, alternatively cadaveric homografts are associated with high rates of perianastomotic haemorrhage, limb occlusion and pseudoaneurysm. Arterial repair using xenoprosthetic patches is associated with lower infection rates compared to the use of prosthetic material...
June 19, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28642086/geographical-outcome-disparities-in-infection-occurrence-after-colorectal-surgery
#11
Nasser Bagheri, Luis Furuya-Kanamori, Suhail A R Doi, Archie C A Clements, Art Sedrakyan
BACKGROUND: Despite improved surgical practices and in-hospital surveillance systems, surgical site infections remain a major public health problem worldwide and often require readmission to hospital. The aim was to apply an advance and innovative spatial analysis approach to identify spatial pattern and clustering (hotspots) of surgical site infection rate (CSIR), and quantifying disparities across communities. METHODS: We used the Admitted Patient Data Collection for patients aged 18 years and over who underwent colorectal surgery in a public hospital between 2002 and 2013 in the Australian State of New South Wales (NSW)...
June 19, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28642013/identifying-mechanisms-driving-formation-of-granuloma-associated-fibrosis-during-mycobacterium-tuberculosis-infection
#12
Hayley C Warsinske, Robert M DiFazio, Jennifer J Linderman, JoAnne L Flynn, Denise E Kirschner
Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB), is a pulmonary pathogen of major global concern. A key feature of Mtb infection in primates is the formation of granulomas, dense cellular structures surrounding infected lung tissue. These structures serve as the main site of host-pathogen interaction in TB, and thus to effectively treat TB we must clarify mechanisms of granuloma formation and their function in disease. Fibrotic granulomas are associated with both good and bad disease outcomes...
June 19, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28641586/access-education-and-policy-awareness-predictors-of-influenza-vaccine-acceptance-among-vha-healthcare-workers
#13
Jennifer Lipkowitz Eaton, David C Mohr, Kathleen M McPhaul, Richard A Kaslow, Richard A Martinello
OBJECTIVE To identify predictors of influenza vaccine acceptance among VHA healthcare workers (HCWs), with emphasis on modifiable factors related to promotion campaigns. DESIGN Survey. SETTING National single-payer healthcare system with 140 hospitals and 321,000 HCWs. PARTICIPANTS National voluntary sample of HCWs in the Veterans Health Administration (VHA) system. METHODS We invited a random sample of 5% of all VHA HCWs to participate. An 18-item intranet-based survey inquired about occupation, vaccination status, employer policy, and local campaign efforts...
June 23, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28641564/investigation-on-the-interaction-of-pseudomonas-syringae-effector-avrpto-with-atrabe1d-gtpase
#14
Xiaomin Hou, Yi Gao
The tomato bacterial speck is a worldwide disease. It is caused by the infection of pathogenic pseudomonas syringae pv. tomato which delivers the effector AvrPto into the host cells via the type III secretion system. AvrPto interacts Rab8 subfamily protein in the GTP-bound form and participates in the response to pathogen infection, but the pathogenic mechanism involved by Rab8 subfamily remains elusive. Here, we investigated on the interrelationship of AvrPto8-159 with Arabidopsis thaliana GTP-restricted Rab8 subfamily protein AtRabE1d13-185Q74L through some biophysical and biochemical methods...
June 21, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28641558/bis-2-aminoimidazolines-and-bisguanidines-synthetic-approaches-antiparasitic-activity-and-dna-binding-properties
#15
Christophe Dardonville, J Jonathan Nué Martínez
BACKGROUND: Parasitic diseases caused by protozoan parasites of the genus Trypanosoma and Plasmodium cause some of the deadliest and disabling human infections in tropical and subtropical areas. Diphenyl-based bis(2-phenylimino)imidazolidines and bisguanidines are extremely potent antiparasitic agents against Trypanosoma brucei (etiological agent of African trypanosomiasis) and Plasmodium falciparum (etiological agent of severe malaria). Many of these compounds are also curative in mouse models of stage 1 African trypanosomiasis representing promising leads for the development of antitrypanosomal drugs...
June 22, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28641535/hiv-1-transcription-inhibitors-increase-the-synthesis-of-viral-non-coding-rna-that-contribute-to-latency
#16
Yao A Akpamagbo, Catherine DeMarino, Michelle L Pleet, Angela Schwab, Myosotys Rodriguez, Robert A Barclay, Gavin Sampey, Sergey Iordanskiy, Nazira El-Hage, Fatah Kashanchi
BACKGROUND: HIV-1 can be preserved in long-lived resting CD4+ T- and myeloid cells, forming a viral reservoir in tissues of the infected individuals. Infected patients primarily receive cART, which, to date, is the most efficient treatment against HIV/AIDS. However, the major problem in the eradication of HIV-1 from patients is the lack of therapeutic approaches to recognize the latent HIV-1 provirus and to eliminate latently infected cells. RESULTS: In the current review, we describe the effect of HIV-1 transcriptional inhibitors CR8#13 and F07#13 using a series of in vitro and in vivo assays...
June 22, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28640909/hiv-tat-regulates-macrophage-gene-expression-in-the-context-of-neuroaids
#17
Loreto Carvallo, Lillie Lopez, Jorge E Fajardo, Matias Jaureguiberry-Bravo, Andras Fiser, Joan W Berman
Despite the success of cART, greater than 50% of HIV infected people develop cognitive and motor deficits termed HIV-associated neurocognitive disorders (HAND). Macrophages are the major cell type infected in the CNS. Unlike for T cells, the virus does not kill macrophages and these long-lived cells may become HIV reservoirs in the brain. They produce cytokines/chemokines and viral proteins that promote inflammation and neuronal damage, playing a key role in HIV neuropathogenesis. HIV Tat is the transactivator of transcription that is essential for replication and transcriptional regulation of the virus and is the first protein to be produced after HIV infection...
2017: PloS One
https://www.readbyqxmd.com/read/28640895/the-interplay-of-climate-intervention-and-imported-cases-as-determinants-of-the-2014-dengue-outbreak-in-guangzhou
#18
Qu Cheng, Qinlong Jing, Robert C Spear, John M Marshall, Zhicong Yang, Peng Gong
Dengue is a fast spreading mosquito-borne disease that affects more than half of the population worldwide. An unprecedented outbreak happened in Guangzhou, China in 2014, which contributed 52 percent of all dengue cases that occurred in mainland China between 1990 and 2015. Our previous analysis, based on a deterministic model, concluded that the early timing of the first imported case that triggered local transmission and the excessive rainfall thereafter were the most important determinants of the large final epidemic size in 2014...
June 22, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28640877/identification-of-c-ebp%C3%AE-as-a-novel-target-of-the-hpv8-e6-protein-regulating-mir-203-in-human-keratinocytes
#19
Anna M Marthaler, Marta Podgorska, Pascal Feld, Alina Fingerle, Katrin Knerr-Rupp, Friedrich Grässer, Hans Smola, Klaus Roemer, Elke Ebert, Yoo-Jin Kim, Rainer M Bohle, Cornelia S L Müller, Jörg Reichrath, Thomas Vogt, Magdalena Malejczyk, Sławomir Majewski, Sigrun Smola
Patients suffering from Epidermodysplasia verruciformis (EV), a rare inherited skin disease, display a particular susceptibility to persistent infection with cutaneous genus beta-human papillomavirus (beta-HPV), such as HPV type 8. They have a high risk to develop non-melanoma skin cancer at sun-exposed sites. In various models evidence is emerging that cutaneous HPV E6 proteins disturb epidermal homeostasis and support carcinogenesis, however, the underlying mechanisms are not fully understood as yet. In this study we demonstrate that microRNA-203 (miR-203), a key regulator of epidermal proliferation and differentiation, is strongly down-regulated in HPV8-positive EV-lesions...
June 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28640592/identification-of-a-small-molecule-activator-for-aphb-a-lysr-type-virulence-transcriptional-regulator-in-vibrio-cholerae
#20
Britney Privett, Maria Pellegrini, Gabriela Kovacikova, Ronald Taylor, Karen Skorupski, Dale F Mierke, F Jon Kull
AphB is a LysR-type transcriptional regulator (LTTR) that cooperates with a second transcriptional activator, AphA, at the tcpPH promoter to initiate expression of the virulence cascade in Vibrio cholerae. Since it is not yet known whether AphB responds to a natural ligand in V. cholerae that influences its ability to activate transcription, we used a computational approach to identify small molecules that influence its activity. In silico docking was used to identify potential ligands for AphB, and saturation transfer difference NMR was subsequently employed to access the validity of promising targets...
June 22, 2017: Biochemistry
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