Track topics on Twitter Track topics that are important to you
The use of feathers as nest material has been proposed as a kind of self-medication strategy because antimicrobial-producing microorganisms living on feathers may defend offspring against pathogenic infections. In this case, it is expected that density of antimicrobial-producing bacteria, and their antimicrobial effects, are higher in feathers that line the nests than in eggshells. Moreover, we know that feather pigmentation and breeding activity may influence density and antimicrobial production of bacteria. To test these predictions, we analyzed bacterial densities and antimicrobial activity of bacterial colonies isolated from bird eggshells and nest-lining feathers against bacterial strains comprising potential pathogens. Samples were collected from spotless starling (Sturnus unicolor) nests, and from artificial nests to isolate the effects of breeding activity on bacterial communities. The composition of feathers lining the nests was experimentally manipulated to create groups of nests with pigmented feathers, with unpigmented feathers, with both types of feathers or without feathers. Although we did not detect an effect of experimental feather treatments, we found that bacterial colonies isolated from feathers were more active against the tested bacterial strains than those isolated from eggshells. Moreover, bacterial density on feathers, keratinolytic bacteria on eggshells and antimicrobial activity of colonies isolated were higher in starling nests than in artificial nests. These results suggest that antimicrobial activity of bacteria growing on nest-lining feathers would be one of the mechanisms explaining the previously detected antimicrobial effects of this material in avian nests, and that breeding activity results in nest bacterial communities with higher antimicrobial activity.
This article was published in the following journal.
Name: FEMS microbiology ecology
Incubation is an important component of parental care in birds, and species differ widely in their incubation rhythm. In this comparative study, we focused on factors responsible for those differences...
In this study, antimicrobial activities of two different samples of L. from Turkey (TR) (Taşköprü, Kastamonu, Turkey) and China (CN) were determined. A broad spectrum of Gram-negative and Gram-pos...
Nestling feathers are often used to monitor and estimate Hg exposure in birds. Decision-making and results of studies on effects of exposure to Hg depend on adequate estimation of [Hg] at the studied ...
ε-Poly-l-lysine (PL) has high antimicrobial activity and a wide antimicrobial spectrum and is applied broadly in the food industry. However, PL may lose part of its activity in phosphate systems, whi...
We present a brief overview of computer simulations over the span of last two decades that have made some serious attempts in providing key insights toward the mechanistic aspects of antimicrobial pep...
The purpose of this study is to assess the surface cutaneous antimicrobial activity of IV Clear™ Dressing, Tegaderm CHG™ Dressing and a Silicone Vehicle Control Dressing.
The study defines a new model of prenatal care called OB Nest which will be compared to the traditional model of prenatal care. OB nest is intended to create an experience for patients tha...
This renewal builds upon our successful culturally adapted PA intervention for Latinas (Pasos Hacia La Salud, R01CA159954) and expands its focus to the critical area of maintenance of beha...
This project is a continuing study from the FEATHERS project (NCT02290353) which focuses on developing novel home therapy program for persons with hemiparesis. This study will focus on exa...
Epilepsy is common in childhood. Throughout life, including adulthood, children with epilepsy are at increased risk of impaired health, functioning, psychological well-being and quality-of...
The natural bactericidal property of BLOOD due to normally occurring antibacterial substances such as beta lysin, leukin, etc. This activity needs to be distinguished from the bactericidal activity contained in a patient's serum as a result of antimicrobial therapy, which is measured by a SERUM BACTERICIDAL TEST.
A hydroxynaphthoquinone that has antimicrobial activity and is being used in antimalarial protocols.
NADPH oxidases that contain two additional EF HAND MOTIFS and an N-terminal PEROXIDASE domain. They are expressed by THYROCYTES and EPITHELIAL CELLS of the kidney, liver, trachea, lung, and glandular tissues such as the testis, pancreas, and prostate. They are critical for the activity of THYROID PEROXIDASE and play a role in the production of thyroid hormones; they may also have antimicrobial activity through the generation of REACTIVE OXYGEN SPECIES.
A blood protein (NSILA) which mimics the biological activity of insulin in serum, but is not suppressed by insulin antibodies. During acid-ethanol extraction of Cohn fraction III, 10% of the activity is found in the supernatant (NSILA-S) and the remaining activity in the precipitate (NSILA-P). The latter is a large molecular compound, much less stable than the soluble fraction. NSILA-S is a more potent growth factor than insulin and exhibits sulfation activity.
Method of measuring the bactericidal activity contained in a patient's serum as a result of antimicrobial therapy. It is used to monitor the therapy in BACTERIAL ENDOCARDITIS; OSTEOMYELITIS and other serious bacterial infections. As commonly performed, the test is a variation of the broth dilution test. This test needs to be distinguished from testing of the naturally occurring BLOOD BACTERICIDAL ACTIVITY.
Pharmacy is the science and technique of preparing as well as dispensing drugs and medicines. It is a health profession that links health sciences with chemical sciences and aims to ensure the safe and effective use of pharmaceutical drugs. The scope of...