A high trans-zeatin nucleoside concentration in corms may promote the multileaf growth of .

has a multileaf growth pattern different from that of other konjacs; however, the hormonal mechanism underlying this phenomenon is not clear. In this study, the levels of hormones closely related to the sprouting of the axillary bud, including five types of cytokinins, indole-3-acetic acid (IAA) and abscisic acid (ABA) were measured. In the second leaf sprouting stage, the content of trans-zeatin riboside (tZR) in corms increased more than 5000-fold over that in the dormancy period.

Age-related intraneuronal accumulation of αII-spectrin breakdown product SBDP120 in the human cerebrum is enhanced in Alzheimer's disease.

Spectrins are a part of cytoskeletal platform that lines the intracellular side of plasma membrane, which can be proteolyzed by calcium-sensitive enzymes including calpains and caspases. Caspase-3 mediated αII-spectrin proteolysis results in the release of a 120kDa spectrin breakdown product (SBDP120), known to occur in conditions with cell death. In rodents, intraneuronal SBDP120 accumulation in the forebrain develops with age, which is enhanced in transgenic models of Alzheimer's disease (AD).

Non-neuronal and neuronal BACE1 elevation in association with angiopathic and leptomeningeal β-amyloid deposition in the human brain.

Background: Cerebral amyloid angiopathy (CAA) refers to the deposition of β-amyloid (Aβ) peptides in the wall of brain vasculature, commonly involving capillaries and arterioles. Also being considered a part of CAA is the Aβ deposition in leptomeninge. The cellular origin of angiopathic Aβ and the pathogenic course of CAA remain incompletely understood.

Vitamin E isomer δ-tocopherol enhances the efficiency of neural stem cell differentiation via L-type calcium channel.

The effects of the vitamin E isomer δ-tocopherol on neural stem cell (NSC) differentiation have not been investigated until now. Here we investigated the effects of δ-tocopherol on NSC neural differentiation, maturation and its possible mechanisms. Neonatal rat NSCs were grown in suspended neurosphere cultures, and were identified by their expression of nestin protein and their capacity for self-renewal.

γ-secretase binding sites in aged and Alzheimer's disease human cerebrum: the choroid plexus as a putative origin of CSF Aβ.

Deposition of β -amyloid (Aβ) peptides, cleavage products of β-amyloid precursor protein (APP) by β-secretase-1 (BACE1) and γ-secretase, is a neuropathological hallmark of Alzheimer's disease (AD). γ-Secretase inhibition is a therapeutical anti-Aβ approach, although changes in the enzyme's activity in AD brain are unclear. Cerebrospinal fluid (CSF) Aβ peptides are thought to derive from brain parenchyma and thus may serve as biomarkers for assessing cerebral amyloidosis and anti-Aβ efficacy.

Experimental epidural hematoma causes cerebral infarction and activates neocortical glial and neuronal genesis in adult guinea pigs.

Epidural hematoma (EDH) is a type of life-threatening traumatic brain injury. Little is known about the extent to which EDH may cause neural damage and regenerative response in the cerebral cortex. Here we attempted to explore these issues by using guinea pigs as an experimental model.

Amyloid plaque pathogenesis in 5XFAD mouse spinal cord: retrograde transneuronal modulation after peripheral nerve injury.

The spinal cord is composed of distinct neuronal groups with well-defined anatomic connections. In some transgenic (Tg) models of Alzheimer's disease (AD), amyloid plaques develop in this structure, although the underlying cellular mechanism remains elusive. We attempted to explore the origin, evolution, and modulation of spinal β-amyloid (Aβ) deposition using Tg mice harboring five familiar AD-related mutations (5XFAD) as an experiential model.

[The effect of Uygur medicine Hyssopus officinalis L on expression of T-bet, GATA-3 and STAT-3 mRNA in lung tissue of asthma rats].

Aim: To study the Uygur medicine Hyssopus officinalis L on T-bet, GATA-3, STAT-3 mRNA levels of asthma rats in order to explore the mechanism of its treatment of asthma.

Methods: Rats were randomly divided into normal control group, asthma model group and dexamethasone group and water extract of Hyssopus officinalis L high and low dose group. The rats were sensitized with OVA, Al(OH)(3); and DPT vaccine and then challenged with inhalation of aerosolized OVA solution for Preparation of asthma model and the level of T-bet, GATA-3, STAT-3 mRNA were detected with RT-PCR.