Realisation of truly microporous pillared clays.

When pillaring a well crystalline synthetic hectorite using molecular pillars, we obtained a truly microporous material for the first time that displays long range order of the pillars and consequently a narrow pore size distribution.

1[alpha],25-dihydroxyvitamin D(3) enhances annexin II dependent proliferation of osteoblasts.

Cells experience a variety of physiological and non-physiological stresses and consequently have appropriate mechanisms to deal with such deviations from homeostasis. Particularly subject to mechanical stress and shear forces are the cells that make up the bones. Osteoblastic cells can interpret this stress as a stimulus for proliferation; however, the molecular mechanisms underlying this phenomenon are poorly understood.

In vitro effects of dynamic strain on the proliferative and metabolic activity of human osteoblasts.

Aim Of The Study: It has been well shown by human and animal studies that mechanical load is an important regulator of skeletal mass and architecture. However, cellular reactions which adapt bone tissue to the mechanical environment are not definitively determined. For this purpose we studied the cell activity of human bone derived cell cultures after mechanical stimulation by cyclic, uniaxial strain at a magnitude occurring in normal loaded bone tissue.

Teratogenic effects of suramin on the chick embryo.

Suramin, a polysulfonated naphthylamine, has been used for the chemotherapy of trypanosomiasis and onchocerciasis since about the 1920s. Currently, it is also being tested as an anticancer agent. It is hoped that suramin might stop the progression of some kinds of cancer since it has been found to inhibit the proliferation and migration of cells and the formation of new blood vessels.

Nucleation-controlled crystallization of a new, spontaneously resolved solvate of [Ru(bpy)3](PF6)2 and its desolvation reaction.

Simply by increasing the supersaturation level, racemic [Ru(bpy)(3)](PF(6))(2) no longer crystallises as the well-known true racemate (beta-modification; P$\bar 3$c1, a=10.6453(5), c=16.2987(9) A, Z=2).