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https://www.readbyqxmd.com/read/28442158/diversity-and-evolutionary-aspects-of-mucin-binding-mucbp-domain-repeats-among-lactobacillus-plantarum-group-strains-through-comparative-genetic-analysis
#1
Sundru Manjulata Devi, Prakash M Halami
Mucin binding protein (Mub) of Lactobacillus plantarum- group (LPG) is considered as a potential marker gene due to its diversity and adherence property to host intestinal layer. We recently observed strain specific diversity in mub gene of LPG strains (n=8) and grouped them into Type I, II and III based on the insertion and/or deletion of MucBP domain repeats (Devi et al., 2016). The mub gene expression pattern noted by real-time PCR revealed 67.64 increased fold change in MTCC 9483 with four MucBP repeats...
April 12, 2017: Systematic and Applied Microbiology
https://www.readbyqxmd.com/read/28436334/acute-hiv-infection-advances-in-mechanisms-and-prophylactic-therapeutic-management
#2
Muhammad Imran Qadir, Amman Abid
Human infection by HIV is spreading rapidly. The spread of the virus is generally organized and transmission can be rectal, oral, or penile. Several types of cells are susceptible to viral invasion. The appearance of symptoms during infection can vary, but the presence of the virus can be confirmed by testing for the antigen p24. The ELISA test is used to detect viral p24 antigen and antiviral antibodies. This technique is approved for the purposes of clinical practice. Highly active antiretroviral therapy is usually a costly and lengthy treatment for HIV infection...
2017: Critical Reviews in Eukaryotic Gene Expression
https://www.readbyqxmd.com/read/28434169/inflammation-immune-activation-and-antiretroviral-therapy-in-hiv
#3
REVIEW
Corrilynn O Hileman, Nicholas T Funderburg
PURPOSE OF REVIEW: This review focuses on the differential effects of contemporary antiretrovirals on systemic inflammation as heightened immune activation is linked to important co-morbidities and mortality with HIV infection. RECENT FINDINGS: Antiretroviral therapy (ART) reduces dramatically systemic inflammation and immune activation, but not to levels synchronous with HIV-uninfected populations. In one ART initiation trial, integrase inhibitors appear to reduce inflammation to a greater degree than non-nucleoside reverse transcriptase inhibitors (NNRTIs); however, it is not clear that there are beneficial effects on inflammation resulting from treatment with integrase inhibitors compared to PIs, between PIs and NNRTIs, between specific nucleoside reverse transcriptase inhibitors, or with maraviroc in ART-naïve patients...
April 22, 2017: Current HIV/AIDS Reports
https://www.readbyqxmd.com/read/28432993/chemical-biological-and-dna-markers-for-tracing-slaughterhouse-effluent
#4
P J Harvey, M P Taylor, H K Handley, S Foster, M R Gillings, A J Asher
Agricultural practices, if not managed correctly, can have a negative impact on receiving environments via waste disposal and discharge. In this study, a chicken slaughter facility on the rural outskirts of Sydney, Australia, has been identified as a possible source of persistent effluent discharge into a peri-urban catchment. Questions surrounding the facility's environmental management practices go back more than four decades. Despite there having never been a definitive determination of the facility's impact on local stream water quality, the New South Wales Environment Protection Authority (NSW EPA) has implemented numerous pollution reduction requirements to manage noise and water pollution at the slaughter facility...
April 19, 2017: Environmental Research
https://www.readbyqxmd.com/read/28432093/diversity-of-integrative-and-conjugative-elements-of-streptococcus-salivarius-and-their-intra-and-interspecies-transfer
#5
Narimane Dahmane, Virginie Libante, Florence Charron-Bourgoin, Eric Guédon, Gérard Guédon, Nathalie Leblond-Bourget, Sophie Payot
Integrative and Conjugative Elements (ICEs) are widespread chromosomal mobile genetic elements, which can transfer autonomously by conjugation in bacteria. Thirteen ICEs with a conjugation module closely related to that of ICESt3 of Streptococcus thermophilus were characterized in Streptococcus salivarius by whole genome sequencing. Sequence comparison highlighted ICE evolution by shuffling of 3 different integration/excision modules (for integration in the 3' end of fda, rpsI or rpmG genes) with the conjugation module of the ICESt3 subfamily...
April 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28426231/the-prevalence-of-integrons-as-the-carrier-of-antibiotic-resistance-genes-in-natural-and-man-made-environments
#6
Liping Ma, An-Dong Li, Xiao-Le Yin, Tong Zhang
Class 1 integrase intI1 has been considered as a good proxy for anthropogenic pollution because of being linked to genes conferring resistance to antibiotics. The gene cassettes of class 1 integrons could carry diverse antibiotic resistance genes (ARGs) and conduct horizontal gene transfer among microorganisms. The present study applied high-throughput sequencing technique combined with an intI1 database and genome assembly to quantify the abundance of intI1 in 64 environmental samples from 8 ecosystems, and to investigate the diverse arrangements of ARG-carrying gene cassettes (ACGCs) carried by class 1 integrons...
April 20, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28420298/prevalence-of-metabolic-syndrome-in-hiv-infected-patients-naive-to-antiretroviral-therapy-or-receiving-a-first-line-treatment
#7
Leonardo Calza, Vincenzo Colangeli, Eleonora Magistrelli, Nicolo' Rossi, Elena Rosselli Del Turco, Linda Bussini, Marco Borderi, Pierluigi Viale
BACKGROUND: The combination antiretroviral therapy (cART) has dramatically improved the life expectancy of patients with HIV infection, but may lead to several long-term metabolic abnormalities. However, data about the frequency of metabolic syndrome (MS) in HIV-infected people vary considerably across different observational studies. METHODS: The prevalence of MS among HIV-infected patients was evaluated by a cross-sectional study conducted among subjects naive to cART or receiving the first antiretroviral regimen and referring to our Clinics from January 2015 to December 2015...
April 19, 2017: HIV Clinical Trials
https://www.readbyqxmd.com/read/28419778/single-and-multiple-dose-pharmacokinetics-of-once-daily-formulations-of-raltegravir
#8
Rajesh Krishna, Matthew L Rizk, Patrick Larson, Valerie Schulz, Filippos Kesisoglou, Radu Pop
A new once-daily formulation of raltegravir, an integrase strand transfer inhibitor indicated in combination with other antiretroviral drugs for the treatment of human immunodeficiency virus-1 infection, is under development. Single-dose and steady-state pharmacokinetics of 1200 mg for 2 formulations of raltegravir were characterized in 2 open-label phase 1 studies in healthy male and female subjects aged 18 to 55 years. The new raltegravir 600-mg formulation had a higher relative bioavailability compared with the 400-mg tablets...
April 17, 2017: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/28418992/initiation-of-antiretroviral-therapy-containing-integrase-inhibitors-increases-the-risk-of-iris-requiring-hospitalization
#9
Marine Dutertre, Lise Cuzin, Elisa Demonchy, Pascal Puglièse, Véronique Joly, Marc-Antoine Valantin, Laurent Cotte, Thomas Huleux, Pierre Delobel, Guillaume Martin-Blondel
No abstract text is available yet for this article.
April 7, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28416592/-wnt-er-is-coming-wnt-signalling-in-chronic-lung-diseases
#10
H A Baarsma, M Königshoff
Chronic lung diseases represent a major public health problem with only limited therapeutic options. An important unmet need is to identify compounds and drugs that target key molecular pathways involved in the pathogenesis of chronic lung diseases. Over the last decade, there has been extensive interest in investigating Wingless/integrase-1 (WNT) signalling pathways; and WNT signal alterations have been linked to pulmonary disease pathogenesis and progression. Here, we comprehensively review the cumulative evidence for WNT pathway alterations in chronic lung pathologies, including idiopathic pulmonary fibrosis, pulmonary arterial hypertension, asthma and COPD...
April 17, 2017: Thorax
https://www.readbyqxmd.com/read/28413362/bone-loss-in-hiv-infection
#11
Caitlin A Moran, M Neale Weitzmann, Ighovwerha Ofotokun
Human immunodeficiency virus (HIV) infection is an established risk factor for low bone mineral density (BMD) and subsequent fracture, and treatment with combination antiretroviral therapy (cART) leads to additional BMD loss, particularly in the first 1-2 years of therapy. The prevalence of low BMD and fragility fracture is expected to increase as the HIV-infected population ages with successful treatment with cART. Mechanisms of bone loss in the setting of HIV infection are likely multifactorial, and include viral, host, and immune effects, as well as direct and indirect effects of cART, particularly tenofovir disoproxil fumarate (TDF) and the protease inhibitors (PIs)...
March 2017: Current Treatment Options in Infectious Diseases
https://www.readbyqxmd.com/read/28411218/the-conjugative-relaxase-trwc-promotes-integration-of-foreign-dna-in-the-human-genome
#12
Coral González-Prieto, Richard Gabriel, Christoph Dehio, Manfred Schmidt, Matxalen Llosa
Bacterial conjugation is a mechanism of horizontal DNA transfer. The relaxase TrwC of the conjugative plasmid R388 cleaves one strand of the transferred DNA at the oriT, covalently attaches to it and leads the ssDNA into the recipient cell. In addition, TrwC catalyzes site-specific integration of the transferred DNA into its target sequence present in the genome of the recipient bacterium. Here, we report the analysis of the efficiency and specificity of the integrase activity of TrwC in human cells, using the Type IV Secretion System of the human pathogen Bartonella henselae to introduce relaxase-DNA complexes...
April 14, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28409117/searching-for-active-mobile-genetic-elements-in-dsrna-fraction-of-pinus-sylvestris-having-witches-broom-abnormalities
#13
A A Pochtovyy, O Yu Baranov, I E Rubel', O A Razumova, V E Padutov, A V Khromov, A V Makhotenko, A P Tkachuk, V V Makarov, V A Gushchin
The most common type of coniferous mobile genetic elements are retrotransposons. Despite of their early positive impact on evolution of modern coniferous species they can have a significant negative impact for Forestry and breeding. Breaking genomic structural integrity mobile elements can cause phenotypic defects of plants. In this regard, the study of the diversity of coniferous mobile genetic elements is particularly interesting. In the present paper, we describe mobile genetic elements in dsRNA fraction of Pinus sylvestris having witches broom abnormalities...
June 2017: Genomics Data
https://www.readbyqxmd.com/read/28402930/hiv-treatment-and-prevention-an-overview-of-recommendations-from-the-ias-usa-antiretroviral-guidelines-panel
#14
REVIEW
Paul A Volberding
Updated recommendations from the IAS-USA Antiretroviral Guidelines Panel on antiretroviral therapy for the treatment and prevention of HIV infection in adults were published in the Journal of the American Medical Association in 2016. The updated, evidence-based recommendations address when to initiate antiretroviral therapy, recommended initial antiretroviral regimens, including integrase strand transfer inhibitor (InSTI)-based regimens, recommended regimens for persons in whom an InSTI is not an option, and special treatment considerations...
February 2017: Topics in Antiviral Medicine
https://www.readbyqxmd.com/read/28400295/phic31-integrase-can-improve-the-efficiency-of-different-construct-designs-for-monoclonal-antibody-expression-in-cho-cells
#15
Maryam Ahmadi, Fereidoun Mahboudi, Samira Ahmadi, Saeedeh Ebadat, Fatemeh Nematpour, Mohammad Reza Akbari Eidgahi, Fatemeh Davami
OBJECTIVES: Several types of expression vectors have been used for recombinant protein expression in Chinese hamster ovary cells (CHO) which usually result in variable and unstable levels of expression. METHODS AND RESULTS: In this study, we have compared the mAb0014 expression level of single ORF/IRES vector and dual ORF vector in the presence and absence of phiC31 integrase targeting system. Both expression vectors contain an elongation factor 1α (EF1α) promoter upstream of LC and harboring an attB site...
April 9, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28397245/interactions-between-integrase-inhibitors-and-human-arginase-1
#16
Lucia Lisi, Michela Pizzoferrato, Fabiola Teresa Miscioscia, Alessandra Topai, Pierluigi Navarra
The neuro-pathogenic mechanism(s) underlying HIV-associated neurocognitive disorders are mostly unknown. HIV-infected macrophages and microglial cells play a crucial role and the metabolic fate of L-arginine may be highly relevant for microglia activation. In this context Arginase (ARG), which uses L-arginine as substrate, can be on the same time a target and source of oxidative stress and inflammation. In the present study, we investigated whether Integrase Strand Transfer Inhibitors (INSTIs) share with the other antiretroviral drugs the ability to inhibit ARG activity...
April 11, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28395180/total-cellular-hiv-1-dna-decreases-after-switching-to-raltegravir-based-regimens-in-patients-with-suppressed-hiv-1-rna
#17
Barbara Rossetti, Genny Meini, Claudia Bianco, Silvia Lamonica, Annalisa Mondi, Simone Belmonti, Iuri Fanti, Nicoletta Ciccarelli, Simona Di Giambenedetto, Maurizio Zazzi, Andrea De Luca
BACKGROUND: The integrase inhibitor raltegravir has been used to intensify antiretroviral therapy in patients with undetectable plasma HIV-1RNA, resulting in variable perturbation of HIV-1 nucleic acids levels in peripheral blood. OBJECTIVES: We aimed at monitoring residual plasma HIV-1RNA and total cellular HIV-1DNA in virologically suppressed patients switching to raltegravir-based regimens. STUDY DESIGN: Fifty-eight subjects on protease inhibitor (PI) or nonnucleoside reverse transcriptase inhibitor (NNRTI)-based regimens, with plasma HIV-1RNA levels <40 copies/ml for ≥6 months and CD4 counts >200cells/μl for ≥12 months were enrolled...
March 23, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28393892/four-genes-essential-for-recombination-define-gints-a-new-type-of-mobile-genomic-island-widespread-in-bacteria
#18
Leire Bardaji, Myriam Echeverría, Pablo Rodríguez-Palenzuela, Pedro M Martínez-García, Jesús Murillo
Integrases are a family of tyrosine recombinases that are highly abundant in bacterial genomes, actively disseminating adaptive characters such as pathogenicity determinants and antibiotics resistance. Using comparative genomics and functional assays, we identified a novel type of mobile genetic element, the GInt, in many diverse bacterial groups but not in archaea. Integrated as genomic islands, GInts show a tripartite structure consisting of the ginABCD operon, a cargo DNA region from 2.5 to at least 70 kb, and a short AT-rich 3' end...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28390164/-efficacy-and-safety-of-nucleoside-sparing-regimen-based-on-raltegravir-and-ritonavir-boosted-darunavir-in-hiv-1-infected-treatment-experienced-patients
#19
Elżbieta Jabłonowska, Piotr Pulik, Anna Kalinowska, Jacek Gąsiorowski, Miłosz Parczewski, Monika Bociąga-Jasik, Łukasz Pulik, Ewa Siwak, Kamila Wójcik
AIM: To assess the efficacy and tolerability of dual therapy containing raltegravir (RAL) and ritonavir boosted darunavir (DRV/r) in HIV-1-infected treatment-experienced patients.ethod. Retrospective analysis of 81 HIV-1-infected treatment-experienced patients (56 male and 25 female, 5 Polish centers) who switched to RAL/DRV/r. RESULTS: The main reasons for the introduction of dual therapy were renal dysfunction (16/81 patients - 19.8%) and virologic failure on previous regimens (15/81 patients - 18...
April 8, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28387772/class-1-integrons-are-low-cost-structures-in-escherichia-coli
#20
Yohann Lacotte, Marie-Cécile Ploy, Sophie Raherison
Resistance integrons are bacterial genetic platforms that can capture and express antibiotic resistance genes embedded within gene cassettes. The capture and shuffling of gene cassettes are mediated by the integrase IntI, the expression of which is regulated by the SOS response in Escherichia coli. Gene cassettes are expressed from a common Pc promoter. Despite the clinical and environmental relevance of integrons, the selective forces responsible for their evolution and maintenance are poorly understood. Here, we conducted pairwise competition experiments in order to assess the fitness cost of class 1 integrons in E...
April 7, 2017: ISME Journal
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