ABSTRACT
An excessive hyperinflammatory response-caused septic shock is a major medical problem that is associated with pathogenic bacterial infections leading to high mortality rates. The intestinal microbiota and the associated elaborated metabolites such as short chain fatty acid butyrate have been shown to relieve pathogenic bacterial-caused acute inflammation. Butyrate can down-regulate inflammation by inhibiting the growth of pathobionts, increasing mucosal barrier integrity, encouraging obligate anaerobic bacterial dominance and decreasing oxygen availability in the gut. Butyrate can also decrease excessive inflammation through modulation of immune cells such as increasing functionalities of M2 macrophages and regulatory T cells and inhibiting infiltration by neutrophils. Therefore, various approaches can be used to increase butyrate to relieve pathogenic bacterial-caused hyperinflammation. In this review we summarize the roles of butyrate in attenuating pathogenic bacterial-caused hyperinflammatory responses and discuss the associated plausible mechanisms.
ABSTRACT
Objective To obtain two types of optical isomers from 1-(Benzamidomethyl)-1,2,3,4-tetrahydro-isoquinoline (BTIQ). Methods ( ±) BTIQ as raw materials , optically pure camphor sulfonic acid as resolution agent was used and repeated resolution in acetone , And the resolution product was detected by specific optical rotation .The product of BTIQ was hydrolyzed , and the ratio of ATIQ was compared with that of the literature .ResuIts After two repeated chemical resolutions , the specific rotations of both enantiomers are no longer changed .It was showed that the products of higher optical purity.The specific rotation of both isomers are -35.65°(CH2Cl2, C=0.5)with the yield of 27.52%,and +35.17°(CH2Cl2, C =0.5) with the yield of 31.55% respectively.The specific rotation value of chiral 1,2,3,4-tetrahydroisoquino line ( ATIQ) which was the hydrolysis product of BTIQ consistent with values reported in the literature .ConcIusion The (-) BTIQ and ( +) BTIQ enantiomers were successfully obtained by the method of resolution , and the yield and optical purity of the obtained products are higher , laying the foundation for the further development of high efficiency , low toxicity of chiral schistosomicide ( praziquantel ) and other containing tetrahydroisoquinoline structure of chiral drugs .
ABSTRACT
To improve the vocational nursing students' interest in learning physiology,‘four modernizations' teaching method was preliminarily explored in physiology teaching practice.‘Four modernizations' referred to the teaching by using multimedia.Using this method,we can simplify complex issues,inspire students' curiosity and thirst for knowledge,combine with real life,make abstract problem specific,mobilize students' initiative,contact with clinical practice,visualize theoretical issues,strengthen the importance and understanding and make moderate expansion so that professional skills and practicality of nursing can be emphasized.
ABSTRACT
To improve the vocational nursing students' interest in learning physiology,‘four modernizations' teaching method was preliminarily explored in physiology teaching practice.‘Four modernizations' referred to the teaching by using multimedia.Using this method,we can simplify complex issues,inspire students' curiosity and thirst for knowledge,combine with real life,make abstract problem specific,mobilize students' initiative,contact with clinical practice,visualize theoretical issues,strengthen the importance and understanding and make moderate expansion so that professional skills and practicality of nursing can be emphasized.