Results 41 to 50 of about 36,307 (249)

Acidic C-terminal domains autoregulate the RNA chaperone Hfq

eLife, 2017
The RNA chaperone Hfq is an Sm protein that facilitates base pairing between bacterial small RNAs (sRNAs) and mRNAs involved in stress response and pathogenesis. Hfq possesses an intrinsically disordered C-terminal domain (CTD) that may tune the function
Andrew Santiago-Frangos, Jeliazko R Jeliazkov, Jeffrey J Gray, Sarah A Woodson   +3 more
doaj   +1 more source

Shifting concepts of autoregulation: Commentary to ‘Static autoregulation in humans' [PDF]

Journal of Cerebral Blood Flow & Metabolism
Advances in imaging techniques have transformed our understanding of cerebral autoregulation. Older imaging techniques provided measurements of cerebral blood flow (CBF) that reflected the average CBF over a window of 10–20 minutes. A key finding, dating back to 1959, was that CBF remained more or less stable over a remarkably wide range of changes in ...
openaire   +2 more sources

Autoregulation of Glucose Production

Physiology, 2000
Glucose itself regulates endogenous glucose production independently of changes in glucoregulatory hormones. In addition, acute stimulation of gluconeogenesis does not increase net glucose production. This indicates autoregulation of glucose production. Glucokinase plays a role in this process by allowing hepatic glucose sensing.
Tappy L, Jéquier E, Schneiter P
openaire   +3 more sources

Autoregulation of the tyrR gene [PDF]

Journal of Bacteriology, 1982
Strains of Escherichia coli K-12 in which the transcription of lacZ is initiated from the tyrR promoter have been constructed by use of the Mu d (Apr lac) phage of Casadaban and Cohen (Proc. Natl. Acad. Sci. U.S.A. 76:4530-4533, 1979). These strains have been used to examine the regulation of expression from the tyrR promoter, with the synthesis of ...
H, Camakaris, J, Pittard
openaire   +2 more sources

Optic Nerve Thickness Assessed by Ocular Ultrasonography in Obstructive Sleep Apnea

Journal of Ultrasound in Medicine, EarlyView.
Objectives Obstructive sleep apnea (OSA) has been associated with various ocular complications, yet ultrasonographic evaluation of optic nerve thickness and its relationship with nocturnal hypoxemia remains poorly understood. This study aimed to evaluate optic nerve thickness and globe dimensions using ocular ultrasonography in patients with different ...
Buğra Kerget, Eyüp Çetin, Alperen Aksakal, Sırma Merve Çetin, Mustafa Buğra Coşkuner   +4 more
wiley   +1 more source

Changes in cerebral autoregulation and vasoreactivity after surgical aortic valve replacement: a prospective study

Experimental Physiology, 2023
Surgical aortic valve replacement (SAVR) alters the natural course of severe aortic stenosis (AS). In this study, we aimed to determine the effects of the disease on dynamic cerebral autoregulation and vasoreactivity (VR) and to assess their changes ...
Tiago Pedro, Andreia Costa, Juliana Ferreira, Ana Luísa Rocha, Elson Salgueiro, Gilberto Pereira, Elsa Azevedo, Pedro Castro   +7 more
doaj   +1 more source

Calibration‐Free Estimation of Cerebrovascular Reactivity From Resting‐State BOLD fMRI Using Reconstructed Respiratory Fluctuations

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Cerebrovascular reactivity (CVR) provides an important index of vascular health and is conventionally quantified using a hypercapnic gas or breath‐hold challenge in conjunction with blood‐oxygen‐level‐dependent functional magnetic resonance imaging (BOLD‐fMRI).
Abdoljalil Addeh, Ethan Church, Muhammad Mahajna, Karen Ardila, Pattarawut Charatpangoon, Alexander D. Cohen, Yang Wang, Rebecca J. Williams, G. Bruce Pike, M. Ethan MacDonald   +9 more
wiley   +1 more source

Neuroimaging Findings and Risk Factors for Brain Injury in Foetuses Treated for Anaemia

Prenatal Diagnosis, EarlyView.
ABSTRACT Objective Characterize neuroimaging findings in foetuses with anaemia and identify associated risk factors. Methods Retrospective cohort study of pregnancies with foetal anaemia (defined as haemoglobin > 2 standard deviations below the gestational age mean) confirmed by foetal blood sampling (FBS) and treated with intrauterine transfusion (IUT)
Laurence Sophie Carmant, Carlos Robles, Seungwoo Lee, Prakesh S. Shah, Greg Ryan, Elka Miller, Shiri Shinar   +6 more
wiley   +1 more source

Antitoxin CrlA of CrlTA Toxin–Antitoxin System in a Clinical Isolate Pseudomonas aeruginosa Inhibits Lytic Phage Infection

Frontiers in Microbiology, 2022
Pseudomonas aeruginosa is an important opportunistic pathogen in cystic fibrosis patients and immunocompromised individuals, and the toxin–antitoxin (TA) system is involved in bacterial virulence and phage resistance.
Muyang Ni, Jianzhong Lin, Jianzhong Lin, Jiayu Gu, Jiayu Gu, Shituan Lin, Shituan Lin, Mei He, Yunxue Guo, Yunxue Guo, Yunxue Guo   +10 more
doaj   +1 more source

Benzimidazole Anthelmintic Compounds Albendazole and Fenbendazole Show Distinct Toxicity on the Nitrogen Fixing Bacterium Mesorhizobium loti and Its Symbiosis With Lotus japonicus

Environmental Toxicology, EarlyView.
ABSTRACT Veterinary medicines, which reach the soil mostly through the application of contaminated manures, can affect beneficial soil microorganisms, such as nitrogen‐fixing rhizobia bacteria, which engage in important symbiotic associations with plants.
Polyxeni Gorgia, Stathis Lagos, Christina N. Nikolaou, Nikoleta Basdeki, Christos Papadopoulos, Dimitrios G. Karpouzas, Daniela Tsikou   +6 more
wiley   +1 more source