Morroniside improves microvascular functional integrity of the neurovascular unit after cerebral ischemia.

Treating the vascular elements within the neurovascular unit is essential for protecting and repairing the brain after stroke. Acute injury on endothelial systems results in the disruption of blood-brain barrier (BBB), while post-ischemic angiogenesis plays an important role in delayed functional recovery. Here, we considered alterations in microvessel integrity to be targets for brain recovery, and tested the natural compound morroniside as a therapeutic approach to restore the vascular elements of injured tissue in a rat model of focal cerebral ischemia.

Promoting neurogenesis via Wnt/β-catenin signaling pathway accounts for the neurorestorative effects of morroniside against cerebral ischemia injury.

Ischemic stroke is a leading cause of mortality and permanent disability in adults worldwide. Neurogenesis triggered by ischemia in the adult mammalian brain may provide insights into stroke treatment. Morroniside is an active component of sarcocarp of C.

[Effects of icariin on beta-amyloid and neurotrophic factors in brain of mitochondrial deficiency model rats].

The purpose of the present study was to investigate the effects of icariin (ICA) on the content of beta-amyloid (Abeta) and the expression of neurotrophic factors in the brain of mitochondrial deficiency model rats. SD rats were infused subcutaneously with sodium azide, which is an inhibitor of mitochondrial respiratory chain complex IV, via a minipump (0. 5 mg .

[Morroniside inhibits H2O2-induced apoptosis in cultured nerve cells].

Objective: To investigate the effects of morroniside on H2O2-induced apoptosis in nerve cells.

Method: Human neuroblastoma cell line SH-SY5Y cells were pre-incubaed with morroniside (1, 10, and 100 micromol x L(-1)) for 24 h prior to exposure to H2O2 (500 micromol x L(-1)) for 18 h. The activity of reactive SOD was measured by a biochemical assay.

Learning-memory deficit with aging in APP transgenic mice of Alzheimer's disease and intervention by using tetrahydroxystilbene glucoside.

Objective: To investigate learning-memory deficit in different ages of AD-like APP transgenic mice and to observe the protective effects of 2,3,5,4'-tetrahydroxystilbene-2-O-beta-D-glucoside (TSG), which is the main component of Polygonum multiflorum, on learning-memory abilities.

Methods: PDAPPV717I transgenic (Tg) mice were randomly divided into 3 model groups (4, 10 and 16 months old mice) and TSG treated (at doses 120 and 240 micromol/kg/d) groups. TSG was administered to some Tg mice with an age range 4-10 months.

[Effects of extract from Cornus officinalis on nitric oxide and NF-kappaB in cortex of cerebral infarction rat model].

Objective: To observe the change of nitric oxide (NO) and expression of nuclear factor-kappa B (NF-kappaB) in the cortex of cerebral infarction rat induced by photochemical reaction, and study the effect of extract from Cornus officinalis (whose main ingredient is iridoid glycoside) in the course of disease.

Method: After rats were fed with experimental drugs for 7 days, the model of cerebral infarction was induced. Spectrophotography and immunohistochemistry were used to detect the change of the content of NO, NOS and the expression of NF-kappaB in the cortex.