La3+ and Ni2+-doped BiOCl were prepared by sol–gel method characterized physicochemical spectroscopic techniques. Their photocatalytic performances investigated the degradation of gentian violet under visible light. The results indicated that co-doping Ni La significantly enhanced performance BiOCl. photodegradation efficiency LaNiBiOCl reached 95.5% in 105 min, which was 1.5 times This signifi...

We investigated the possibility that the TRPC gene family of putative store-operated Ca2+ entry channels contributes to the increase in microvascular endothelial permeability by prolonging the rise in intracellular Ca2+ signaling. Studies were made in wild-type (wt) and TRPC4 knockout (TRPC4(-/-) mice and lung vascular endothelial cells (LECs) isolated from these animals. RT-PCR showed expressi...

1. Cell-free extracts of all plants tested contained a novel enzyme activity (xyloglucan endotransglycosylase, XET) able to transfer a high-Mr portion from a donor xyloglucan to a suitable acceptor such as a xyloglucan-derived nonasaccharide (Glc4Xyl3GalFuc; XG9). 2. A simple assay for the enzyme, using [3H]XG9 and based on the ability of the [3H]polysaccharide product to bind to filter paper, ...

Parathyroid hormone (PTH) secretion was investigated in intact cells isolated in vitro. Parathyroid cells from bovine parathyroid glands were obtained through tissue dispersion and cell purification through isotonic Percoll gradients, a newly developed protocol enhancing cell homogeneity and viability. Isolated cells maintained both metabolic viability and plasma membrane intactness for over 3 ...

Mechanosensitivity is hypothesized to participate in the regulation of ciliary beat frequency (CBF) in airway epithelia. To investigate this hypothesis, CBF in excised mouse trachea was monitored (microscopy image analysis) while varying mucosal shear (perfusate velocity and/or viscosity; planar flow). CBF increased within minutes of step increase to steady shear stress as small as 10(-3) Pa an...

Calcium (Ca) deficiency in fruit causes various physiological disorders leading to quality loss. However, disorders related to Ca deficiency are not simply caused by a shortage of calcium supply. Ca distribution is also an important relation. This study examined Ca distribution pattern in fruit and pedicel in litchi (Litchi chinensis Sonn.) and the influence of Ca channel inhibitor La3+ on frui...