Tryptophan metabolism in health and disease

C Xue, G Li, Q Zheng, X Gu, Q Shi, Y Su, Q Chu… - Cell Metabolism, 2023‏ - cell.com
Tryptophan (Trp) metabolism primarily involves the kynurenine, 5-hydroxytryptamine, and
indole pathways. A variety of bioactive compounds produced via Trp metabolism can …

[HTML][HTML] Influence of tryptophan and serotonin on mood and cognition with a possible role of the gut-brain axis

TA Jenkins, JCD Nguyen, KE Polglaze, PP Bertrand - Nutrients, 2016‏ - mdpi.com
The serotonergic system forms a diffuse network within the central nervous system and plays
a significant role in the regulation of mood and cognition. Manipulation of tryptophan levels …

Kynurenine pathway metabolism and the microbiota-gut-brain axis

PJ Kennedy, JF Cryan, TG Dinan, G Clarke - Neuropharmacology, 2017‏ - Elsevier
It has become increasingly clear that the gut microbiota influences not only gastrointestinal
physiology but also central nervous system (CNS) function by modulating signalling …

Lost in translation? The potential psychobiotic Lactobacillus rhamnosus (JB-1) fails to modulate stress or cognitive performance in healthy male subjects

JR Kelly, AP Allen, A Temko, W Hutch… - Brain, behavior, and …, 2017‏ - Elsevier
Background Preclinical studies have identified certain probiotics as psychobiotics–live
microorganisms with a potential mental health benefit. Lactobacillus rhamnosus (JB-1) has …

[HTML][HTML] The microbiota-gut-brain axis in hippocampus-dependent learning and memory: current state and future challenges

EJ Kuijer, L Steenbergen - Neuroscience & Biobehavioral Reviews, 2023‏ - Elsevier
A fundamental shift in neuroscience suggests bidirectional interaction of gut microbiota with
the healthy and dysfunctional brain. This microbiota-gut-brain axis has mainly been …

Antibiotics and mental health: The good, the bad and the ugly

K Dinan, T Dinan - Journal of Internal Medicine, 2022‏ - Wiley Online Library
Antibiotics are recognised as, on occasion, producing psychiatric side effects, most notably
depression and anxiety. Apart from antimicrobial activity, antibiotics have multiple off‐target …

Bifidobacterium longum 1714 as a translational psychobiotic: modulation of stress, electrophysiology and neurocognition in healthy volunteers

AP Allen, W Hutch, YE Borre, PJ Kennedy… - Translational …, 2016‏ - nature.com
The emerging concept of psychobiotics—live microorganisms with a potential mental health
benefit—represents a novel approach for the management of stress-related conditions. The …

A systematic review of the psychobiological burden of informal caregiving for patients with dementia: Focus on cognitive and biological markers of chronic stress

AP Allen, EA Curran, Á Duggan, JF Cryan… - Neuroscience & …, 2017‏ - Elsevier
As the physiological impact of chronic stress is difficult to study in humans, naturalistic
stressors are invaluable sources of information in this area. This review systematically …

A psychology of the human brain–gut–microbiome axis

AP Allen, TG Dinan, G Clarke… - Social and personality …, 2017‏ - Wiley Online Library
In recent years, we have seen increasing research within neuroscience and biopsychology
on the interactions between the brain, the gastrointestinal tract, the bacteria within the …