Carotenoids exert beneficial effects on human health through their excellent antioxidant activity. To increase carotenoid productivity in the marine Pennales Phaeodactylum tricornutum, we genetically engineered the phytoene synthase gene (psy) to improve expression because RNA-sequencing analysis has suggested that the expression level of psy is lower than other enzyme-encoding genes that are i...

Residents enrolled in internal medicine/psychiatry (IM/PSY) and family practice/psychiatry (FP/PSY) programs were surveyed to assess their views concerning training experiences and future plans. The FREIDA online directory was used to supplement missing information. Responses were received from 60% of residents (N=111), representing all active IM/PSY (n=20) and FP/PSY (n=9) programs. Variabilit...

beta-Carboline-3-carboxylic acid ethyl ester (beta-CCE) dose-dependently potentiated psychological-stress induced analgesia (PSY-SIA), and the effect was reversed by diazepam. Concurrent exposure to PSY stress or concomitant treatment with beta-CCE blocked the development of analgesic tolerance to morphine; the effect of PSY stress was antagonized by diazepam, and that of beta-CCE was reversed ...

Phytoene synthase (Psy) and phytoene desaturase (Pds) are the first dedicated enzymes of the plant carotenoid biosynthesis pathway. We report here the organ-specific and temporal expression of PDS and PSY in tomato plants. Light increases the carotenoid content of seedlings but has little effect on PDS and PSY expression. Expression of both genes is induced in seedlings of the phytoene-accumula...

We here report on the characterization of a novel third phytoene synthase gene (PSY) in rice (Oryza sativa), OsPSY3, and on the differences among all three PSY genes with respect to the tissue-specific expression and regulation upon various environmental stimuli. The two already known PSYs are under phytochrome control and involved in carotenoid biosynthesis in photosynthetically active tissues...

The biotrophic pathogen Xanthomonas oryzae pv. oryzae (Xoo) produces a sulfated peptide named RaxX, which shares similarity to peptides in the PSY (plant peptide containing sulfated tyrosine) family. We hypothesize that RaxX mimics the growth-stimulating activity of PSY peptides. Root length was measured in Arabidopsis and rice treated with synthetic RaxX peptides. We also used comparative geno...

MOTIVATION Previous researches showed that phytoene synthase (Psy) from Dunaliella bardawil is the first regulatory point in carotenogenesis. We hypothesize certain interactions between the environmental stress factors and the regulatory sequences of Psy in D.bardawil (DbPsy). Consequently, LA PCR-based genomic walking approach was performed for isolation of psy promoter and terminator, respect...

Studies were conducted to determine whether pectin (PE) or psyllium (PSY) could reverse the high plasma cholesterol and triacylglycerol (TAG) concentrations induced by high fat (HF) or high sucrose (HS) diets and which are the mechanisms involved. Male guinea pigs were fed either a low fat (LF) or a HF diet with 80% of the carbohydrate energy derived from sucrose. Cellulose was used as control....

Substance use is a risk behavior that tends to increase during adolescence, a time when part of the personality is still in development. Traditionally, personality psychopathology has been measured in terms of categories, although dimensional models have demonstrated better consistency. This study aimed to analyze differences in personality profiles between adolescents with substance use disord...