Taking advantage of high-throughput technologies, deep sequencing of the human microbiome has revealed commensal bacteria independent of the ability to culture them. The composition of the commensal microbiome is dependent on bacterial diversity and the state of the host regulated by the immune system. Candida species are well known as components of the commensal oral microbiota. Candida species frequently colonize and develop biofilms on medical devices like dentures and catheters. Therefore, Candida biofilm on dentures leads to a decrease in the bacterial diversity and then to a change in the composition of the oral microbiota. A disturbance in the balance between commensal bacteria and the host immune system results in a switch from a healthy state to a diseased state even in the limited oral niche.
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http://dx.doi.org/10.1155/2014/454391 | DOI Listing |
Food Chem
December 2024
State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China; School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China. Electronic address:
Oleanolic acid (OA) is a food-derived bioactive component with antidiabetic activity, but its water solubility and oral bioavailability are notably restricted. In this study, to overcome these limitations, ursodeoxycholic acid-modified chitosan oligosaccharide (UCOS) was synthesized to encapsulate OA in self-assembled nanomicelles (UCOS-OA). The encapsulation efficiency and drug loading of UCOS-OA were 86 % and 11 %, respectively.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
VIB-UGent Center for Inflammation Research, Ghent, Belgium.
Background: The brain is shielded from the peripheral circulation by central nervous system (CNS) barriers, comprising the well-known blood-brain barrier (BBB) and the less recognized blood-cerebrospinal fluid (CSF) barrier located within the brain ventricles. The gut microbiota represents a diverse and dynamic population of microorganisms that can influence the health of the host, including the development of neurological disorders like Alzheimer's disease (AD). However, the intricate mechanisms governing the interplay between the gut and brain remain elusive, and the means by which gut-derived signals traverse the CNS barriers remain unclear.
View Article and Find Full Text PDFGraefes Arch Clin Exp Ophthalmol
January 2025
Department of Endocrinology, Metabolism and Internal Medicine, Poznan University of Medical Sciences, Przybyszewskiego 49, 60-355, Poznan, Poland.
Purpose: Graves' disease (GD) and Graves' orbitopathy (GO) are multifactorial disorders with links to the gut microbiome and autoimmunity. It is observed that patients with GD exhibit altered gut microbiome diversity. However, little is known about the role of oral microbiota in GD and GO.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
Background: Consuming prebiotics demonstrated therapeutic potential against obesity, as illustrated by our previous study on xylooligosaccharide (XOS), revealing that XOS reduced adiposity, diminished systemic inflammation, and restored cognitive function in obese insulin-resistant rats through the gut-brain axis. Fresh bananas at various ripening stages are being transformed into snacks, indicating potential as prebiotic-based treats enriched with fructooligosaccharide and inulin. Despite those findings, there remains a notable gap in the literature concerning the impact of these prebiotic-based snacks on brain inflammation, reactive oxygen species (ROS) production, and cognitive function in high-fat diet (HFD)-induced obese rats.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Anesthesia, Critical Care & Pain Medicine, Boston, MA, USA.
Background: Spouses of Alzheimer's disease (AD) patients are at a higher risk of developing incidental dementia. However, the causes and underlying mechanism of this clinical observation remain largely unknown. One possible explanation is linked to microbiota dysbiosis, a condition that has been associated with AD.
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