October 2021

Lactobacillus plantarum PS128 prevents cognitive dysfunction in Alzheimer’s disease mice by modulating propionic acid levels, glycogen synthase kinase 3 beta activity, and gliosis

According to recent evidence, psychobiotics exert beneficial effects on central nervous system-related diseases, such as mental disorders. Lactobacillus plantarum PS128 (PS128), a novel psychobiotic strain, improves motor function, depression, and anxiety behaviors. However, the psychobiotic effects and mechanisms of PS128 in Alzheimer’s disease (AD) remain to be explored. Objectives The goal of the current study was to

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Alkaloids of Peganum harmala L. and their Pharmacological Activity

The presented data of preclinical studies showed that harmine hydrochloride has antidepressant,antihypoxic, and antiparkinsonian effects, eliminates catalepsy caused by haloperidol in rats, and reducesoligokinesia and rigidity in the parkinsonian syndrome test. In terms of antiparkinsonian effect, harmine hydrochlorideis not inferior to amitriptyline. The study of the relative bioavailability of harmine hydrochloride in experimentalanimals showed that

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Overcoming epistemic injustices in the biomedical study of ayahuasca. Towards ethical and sustainable regulation

After decades of biomedical research on ayahuasca’s molecular compounds and theirphysiological effects, recent clinical trials show evidence of therapeutic potential for depression.However, indigenous peoples have been using ayahuasca therapeutically for a very longtime, and thus we question the epistemic authority attributed to scientific studies, proposing thatepistemic injustices were committed with practical, cultural, social and legal

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A novel multi-target strategy to attenuate the progression of Parkinson’s disease by diamine hybrid AGE/ALE inhibitor

Instead of a conventional ‘one-drug-one-target approach’, this article presents a novel multi-target approach with a concept of trapping simultaneously as many detrimental factors as possible involved in the progression of Parkinson’s disease. These factors include reactive carbonyl species, reactive oxygen species, Fe3+/Cu2+ and ortho-quinones (o-quinone), in particular. Different from the known multi-target strategies for Parkinson’s disease,

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Genome-wide association study of REM sleep behavior disorder identifies novel loci with distinct polygenic and brain expression effects

Rapid eye movement (REM) sleep behavior disorder (RBD), enactment of dreams during REM sleep, isan early clinical symptom of alpha-synucleinopathies. RBD also defines more severe forms of alphasynucleinopathies. The genetic background of RBD and its underlying mechanisms are not wellunderstood. Here, we performed the first genome-wide association study of RBD, identifying five RBD riskloci. Expression

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Neurotoxins that cause parkinsonism and the search for analogues in the environment

Through the tragic misadventures described in Addicts,the parkinsonism-inducing neurotoxin 1-methyl-4-phenyl1,2,3,6-tetrahydropyridine (MPTP) was discovered. It hasbeen one of the most important tools in generating animalmodels to study Parkinson’s disease. Studies of how it killsdopaminergic neurons have revealed their Achilles’ heel,mitochondria, the power plants of cells. Mitochondriaprovide cells with adenosine triphosphate, the chemicalenergy molecule that the cells’

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Gut bacteria identified in colorectal cancer patients promote tumourigenesis via butyrate secretion

Emerging evidence is revealing that alterations in gut microbiota are associated with colorectal cancer (CRC). However, very little is currently known about whether and how gut microbiota alterations are causally associated with CRC development. Here we show that 12 faecal bacterial taxa are enriched in CRC patients in two independent cohort studies. Among them, 2 Porphyromonas species

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