Co-cultivation of isopod-associated fungi sp. SF09 and SF09A led to the reciprocal induction of thirteen new compounds (- and -) with diverse architectures. Importantly, compounds and are rare fungal sesquiterpene-saccharide hybrids incorporating a xylopyranose moiety, compound (±)- represents the first example of a natural linear sesquiterpene racemate, and compound is a rare α-pyrone derivative with a xylopyranose motif.
View Article and Find Full Text PDF, an endophytic fungus associated with the herbal medicine , produced four new polyketides, aspeversins A-D (1-2 and 5-6) and four known compounds, -methylaverufin (2), aversin (3), varilactone A (7) and spirosorbicillinol A (8). Their structures were elucidated by extensive spectroscopic data analysis, and their absolute configurations were determined by calculated electronic circular dichroism (ECD) and Mo(AcO)-induced CD data. Compound 5 was found to exhibit α-glucosidase inhibitory activity with an IC value of 25.
View Article and Find Full Text PDFPersistent neurogenesis exists in the subventricular zone (SVZ) of the ventricles and the subgranular zone (SGZ) of the dentate gyrus of the hippocampus in the adult mammalian brain. Adult endogenous neurogenesis not only plays an important role in the normal brain function, but also has important significance in the repair and treatment of brain injury or brain diseases. This article reviews the process of adult endogenous neurogenesis and its application in the repair of traumatic brain injury (TBI) or ischemic stroke, and discusses the strategies of activating adult endogenous neurogenesis to repair brain injury and its practical significance in promoting functional recovery after brain injury.
View Article and Find Full Text PDFMuscle spindle is the key proprioceptor in skeletal muscles and plays important roles in many physiological activities, such as maintaining posture, regulating movement and controlling speed variation. It has significant clinical relevance and is emerging as a promising therapeutic target for the treatment of motor functional impairment and metabolic diseases. In this review, we summarized muscle spindle distribution and the mechanism of mechanical signal transmission, and reviewed the research progress on morphological and structural characteristics of muscle spindles.
View Article and Find Full Text PDF