Results 91 to 100 of about 75,567 (173)

Retrotransposon Tto1: functional analysis and engineering for insertional mutagenesis [PDF]

open access: yes, 2011
Retrotransposons are genomic parasites activated by stress conditions that can be seriously detrimental for their host. In this work I demonstrate that Tto1, a typical plant LTR retrotransposon with insertion preference into genes can be turned into a ...
Tramontano, Andrea   +2 more
core  

Angiotensin II Type 1 Receptor Blocker Usage Prevents Oxidative Stress and Muscle Dysfunction in HIV

open access: yesFundamental &Clinical Pharmacology, Volume 39, Issue 4, August 2025.
ABSTRACT Background We aimed to elucidate the role of Angiotensin II type 1 receptor (AT1R) blocker usage in muscle wasting and dysfunction related to HIV. Research Design and Methods Appendicular skeletal muscle mass, higher and lower limb strength, and physical fitness were determined in people living with HIV (PWH) using AT1R blockers users (n = 33),
Rafael Deminice   +4 more
wiley   +1 more source

Integrase-RNA interactions underscore the critical role of integrase in HIV-1 virion morphogenesis

open access: yeseLife, 2019
ABSTRACTA large number of HIV-1 integrase (IN) alterations, referred to as class II substitutions, exhibit pleotropic effects during virus replication. However, the underlying mechanism for the class II phenotype is not known. Here we demonstrate that all tested class II IN substitutions compromised IN-RNA binding in virions by one of three distinct ...
Elliott, Jennifer   +9 more
openaire   +6 more sources

Weight gain, obesity, and the impact of lifestyle factors among people living with HIV: A systematic review

open access: yesObesity Reviews, Volume 26, Issue 7, July 2025.
Summary HIV remains a significant health concern, but the advent of antiretroviral therapy (ART) has transformed it into a manageable chronic condition. However, weight gain and obesity pose a substantial challenge for people living with HIV (PLWH). Moreover, the role of lifestyle has not yet been comprehensively investigated.
Giulia Gilberti   +5 more
wiley   +1 more source

A Bacterial Sulfotransferase Catalyzes an Unusual Di‐Sulfation in Natural Products Biosynthesis

open access: yesChemBioChem, Volume 26, Issue 11, June 3, 2025.
Herein, a unique sulfotransferase, AdpST, is identified from the adp biosynthetic gene clusters (BGC) in Streptomyces davaonensis DSM101723 and demonstrates that AdpST possesses di‐sulfation activity, which is unprecedented for bacterial phosphoadenosine‐5’‐phosphosulfate (PAPS)‐dependent sulfotransferases. It is further shown that the adp BGC contains
Conor Pulliam   +5 more
wiley   +1 more source

The Complex Role of CD8+ T Cells in Placental HIV Infection

open access: yesEuropean Journal of Immunology, Volume 55, Issue 6, June 2025.
CD8+ T cells exhibit dual roles at the maternal‐fetal interface supporting tolerance via IL‐10 and TGF‐β and aiding implantation and vascular remodeling through TNF‐α and IFN‐γ. In HIV infection, CD8+ T cells expand, driving inflammation, PD‐L1 upregulation on trophoblasts, and cytotoxic dysfunction via reduced Granzyme B and Perforin, compromising ...
Kimberly Peta   +2 more
wiley   +1 more source

HIV drug resistance, early treatment outcomes and impact of guidelines compliance after protease inhibitor‐based second‐line failure in a dedicated resistance clinic in western Kenya: a retrospective cohort study

open access: yesJournal of the International AIDS Society, Volume 28, Issue 6, June 2025.
Abstract Introduction Data on drug resistance, viral outcomes and guidelines compliance following protease inhibitor (PI)‐based second‐line failure in low‐ and middle‐income countries are limited, particularly in the era of dolutegravir‐containing antiretroviral therapy (ART). Methods We conducted a retrospective cohort study of people living with HIV (
John M. Humphrey   +11 more
wiley   +1 more source

Nitrosarchaeum haohaiensis sp. Nov. CL1T: Isolation and Characterisation of a Novel Ammonia‐Oxidising Archaeon From Aquatic Environments

open access: yesEnvironmental Microbiology Reports, Volume 17, Issue 3, June 2025.
Following a 3.5‐year enrichment cultivation period, a rapid‐growing ammonia‐oxidising archaeon, designated CL1T, was isolated from the East China Sea. Strain CL1T represents a new species within the Nitrosarchaeum genus and is capable of effectively oxidising ammonia at both low and high concentrations through the GS‐GOGAT and GDH pathways. Furthermore,
Hailing Li   +7 more
wiley   +1 more source

Significance of constitutive integrase synthesis. [PDF]

open access: yesProceedings of the National Academy of Sciences, 1976
One conceivable function for constitutive integrase formation by lambda prophage is to stabilize the inserted state by catalyzing reinsertion of prophages that are accidentally excised. As this hypothesis implies a dynamic equilibrium betwen inserted and noninserted DNA, the existence of such an equilibrium is explored.
openaire   +3 more sources

Characterization and expression analysis of Staphylococcus aureus pathogenicity island 3 - Implications for the evolution of staphylococcal pathogenicity islands [PDF]

open access: yes, 2002
We describe the complete sequence of the 15.9-kb staphylococcal pathogenicity island 3 encoding staphylococcal enterotoxin serotypes B, K, and Q. The island, which meets the generally accepted definition of pathogenicity islands, contains 24 open reading
Kapur, Vivek   +5 more
core  

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