Background: Dolutegravir (DTG), an integrase strand inhibitor, is currently used as the first-line treatment for HIV. Despite relatively poor tissue penetration, the risk of adverse effects in metabolic and excretory systems should be considered. The trace aminergic system and trace amines are emerging as relevant role players in many chronic diseases that are commonly diagnosed but poorly understood. Trace amines are biogenic amines that are endogenously produced and can also be ingested by the intake of trace amine-rich food. Trace amines are known to differentially regulate inflammatory and neurological outcome.
Objective: This study investigated the effects of DTG on the trace amine profile in a wistar rat model.
Methods: A total of 24 healthy wistar rats were randomly divided into four experimental groups: male and female controls and male and female DTG-treated. Blood and tissue samples were collected following a 12-week DTG administration study. Liquid chromatography-tandem mass spectroscopy (LC-MS/MS) was used to determine trace amine concentrations in urine, plasma, brain, and gastrointestinal tissue.
Results: Current data illustrate that polyamines differ significantly (p < 0.05) between males and females in various matrices. DTG significantly (p < 0.05) reduced jejunal tyramine and urinary synephrine levels.
Conclusion: Data do not raise major concerns about DTG in the context of the trace amine profile. However, given the importance of the dysregulated trace amine profile in various diseased states, including HIV, current data warrant clinical investigation to further evaluate the significance of DTG-associated effects on the trace amine profile.
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http://dx.doi.org/10.1007/s40268-024-00484-4 | DOI Listing |
Br J Psychiatry
December 2024
Population Health Sciences, Bristol Medical School, University of Bristol, UK.
Background: Trace amine-associated receptor 1 (TAAR1) agonists offer a new approach, but there is uncertainty regarding their effects, exact mechanism of action and potential role in treating psychosis.
Aims: To evaluate the available evidence on TAAR1 agonists in psychosis, using triangulation of the output of living systematic reviews (LSRs) of animal and human studies, and provide recommendations for future research prioritisation.
Method: This study is part of GALENOS (Global Alliance for Living Evidence on aNxiety, depressiOn and pSychosis).
Int J Mol Sci
December 2024
Institute of Translational Biomedicine, St. Petersburg State University, Universitetskaya nab. 7/9, St. Petersburg 199034, Russia.
Currently, the TAAR1 receptor has been identified in various cell groups in the intestinal wall. It recognizes biogenic amine compounds like phenylethylamine or tyramine, which are products of decarboxylation of phenylalanine and tyrosine by endogenous or bacterial decarboxylases. Since several gut bacteria produce these amines, TAAR1 is suggested to be involved in the interaction between the host and gut microbiota.
View Article and Find Full Text PDFSmall
December 2024
School of Chemistry and Chemical Engineering, South China University of Technology, Guangdong, 510640, China.
Solid amine adsorbents designed for capturing trace amounts of carbon dioxide (CO) offer a promising approach. However, developing solid amine adsorbents that concurrently exhibit high oxidative stability and superior CO adsorption capacity remains a significant challenge. Here, ED-PEI/PEG@FS-TBP, an innovative and highly stable CO adsorbent is introduced.
View Article and Find Full Text PDFJ Environ Sci (China)
June 2025
Ministry of Natural Resources Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China; School of Oceanography, Shanghai Jiao Tong University, Shanghai 200030, China. Electronic address:
Nat Commun
November 2024
Department of Anesthesiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China.
As the ability of liver regeneration is pivotal for liver disease patients, it will be of high significance and importance to identify the missing piece of the jigsaw influencing the liver regeneration. Here, we report that chronic stress impairs the liver regeneration capacity after partial hepatectomy with increased mortality in male mice. Anatomical tracing and functional mapping identified a neural circuit from noradrenergic neurons in the locus coeruleus (LC) to serotonergic neurons in the rostral medullary raphe region (rMR), which critically contributes to the inhibition of liver regeneration under chronic stress.
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