T8907

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Redox signaling through zinc activates the radiation response in Deinococcus bacteria.

Romaric Magerand et al.

Scientific reports, 11(1), 4528-4528 (2021-02-27)

Deinococcus bacteria are extremely resistant to radiation and other DNA damage- and oxidative stress-generating conditions. An efficient SOS-independent response mechanism inducing expression of several DNA repair genes is essential for this resistance, and is controlled by metalloprotease IrrE that cleaves

Exposure to artificial light at night increases innate immune activity during development in a precocial bird.

Chandan Saini et al.

Comparative biochemistry and physiology. Part A, Molecular & integrative physiology, 233, 84-88 (2019-04-12)

Humans have greatly altered Earth's night-time photic environment via the production of artificial light at night (ALAN; e.g. street lights, car traffic, billboards, lit buildings). ALAN is a problem of growing importance because it may significantly disrupt the seasonal and

Detection and quantification of bacterial biofilms combining high-frequency acoustic microscopy and targeted lipid microparticles.

Pavlos Anastasiadis et al.

Journal of nanobiotechnology, 12, 24-24 (2014-07-07)

Immuno-compromised patients such as those undergoing cancer chemotherapy are susceptible to bacterial infections leading to biofilm matrix formation. This surrounding biofilm matrix acts as a diffusion barrier that binds up antibiotics and antibodies, promoting resistance to treatment. Developing non-invasive imaging

Effects of different sterilization methods on the physico-chemical and bioresponsive properties of plasma-treated polycaprolactone films.

Rouba Ghobeira et al.

Biomedical materials (Bristol, England), 12(1), 015017-015017 (2017-01-25)

For most tissue engineering applications, surface modification and sterilization of polymers are critical aspects determining the implant success. The first part of this study is thus dedicated to modifying polycaprolactone (PCL) surfaces via plasma treatment using a medium pressure dielectric

The causative effects of corticosterone on innate immunity during the stress response in the House Sparrow, Passer domesticus.

Sisi Gao et al.

General and comparative endocrinology, 275, 30-37 (2019-02-06)

Stress-induced inhibition of innate immune activity has been observed in a variety of wild birds and may increase chances of infection because this activity constitutes the first line of defense against pathogens. We previously reported that the transient elevation of

Improved ex vivo method for microbiocidal activity across vertebrate species.

Susannah S French et al.

Biology open, 1(5), 482-487 (2012-12-06)

The field of ecoimmunology is currently undergoing rapid expansion, whereby biologists from a wide range of ecological disciplines are increasingly interested in assessing immunocompetence in their study organisms. One of the key challenges to researchers is determining what eco-immune measures

Influence of biofilm growth age, media, antibiotic concentration and exposure time on Staphylococcus aureus and Pseudomonas aeruginosa biofilm removal in vitro.

Xiaofeng Chen et al.

BMC microbiology, 20(1), 264-264 (2020-08-25)

Biofilm is known to be tolerant towards antibiotics and difficult to eradicate. Numerous studies have reported minimum biofilm eradication concentration (MBEC) values of antibiotics for many known biofilm pathogens. However, the experimental parameters applied in these studies differ considerably, and

Corticosterone rapidly suppresses innate immune activity in the house sparrow (Passer domesticus).

Sisi Gao et al.

The Journal of experimental biology, 220(Pt 2), 322-327 (2016-11-05)

Stress-induced effects on innate immune activity in wild birds have been difficult to predict. These difficulties may arise from the frequent assumptions that (1) the stress response influences different components of the immune response similarly, (2) stress-induced effects do not

Hot, Humid Air Decontamination of Aircraft Confirmed That High Temperature and High Humidity Are Critical for Inactivation of Infectious, Enveloped Ribonucleic Acid (RNA) Virus.

Tony L Buhr et al.

Frontiers in bioengineering and biotechnology, 8, 592621-592621 (2020-11-17)

Aims: To develop infectious (live/dead) enveloped virus test indicators and response surface methodology (RSM) models that evaluate survival of an enveloped ribonucleic acid (RNA) virus on contaminated aircraft materials after exposure to hot, humid air (HHA). Methods and Results: Enveloped

Bicarbonate induces high-level resistance to the human antimicrobial peptide LL-37 in Staphylococcus aureus small colony variants.

Ping Zhang et al.

The Journal of antimicrobial chemotherapy, 73(3), 615-619 (2017-12-07)

Staphylococcus aureus small colony variants (SCVs) cause persistent infections and are resistant to cationic antibiotics. Antimicrobial peptides (AMPs) have been suggested as promising alternatives for treating antibiotic-resistant bacteria. We investigated the capacity of the human cationic AMP LL-37 to kill

Comparison of tryptic soy broth with tryptic soy broth supplemented with sucrose in the septi-chek blood culture system.

M A Pfaller et al.

Journal of clinical microbiology, 17(2), 272-275 (1983-02-01)

The performance of tryptic soy broth (TSB) was compared with TSB supplemented with 10% sucrose (TSB-S) in the Septi-Chek blood culture system (Roche Diagnostics, Div. Hoffmann-La Roche Inc.). A total of 2,292 sets of blood cultures were evaluated. Although slightly

Visualization and characterization of Enterococcus faecalis biofilm structure in bovine dentin using 2D and 3D microscopic techniques.

Ali Keleş et al.

Archives of microbiology, 203(1), 269-277 (2020-09-13)

Bacterial biofilms are related to various dental and periodontal infectious diseases, and the characterization of this biological structure with micro-computed tomography (micro-CT) may offer valuable information for clinical and research applications. In this study, we aimed to develop a model

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