[Relation between pain and health-related quality of life in cancer patients].

Purpose: This study aimed to investigate the relation between pain and health-related quality of lif e(HRQOL)in cancer patients.

Methods: An internet-based HRQOL survey of 618 patients with different malignancies using the EORTC QLQ-C30 and BPI-SF was performed. Three study groups were formed based on the pain in the previous month: group A comprised patients without pain; group B comprised patients with mild pain; and group C comprised patients with moderate to severe pain.

Pictet-spengler reaction using ion-exchange resin as a catalyst and support for 'catch and release' purification.

The Pictet-Spengler reaction between tryptamine and aldehydes was catalyzed by Dowex 50W-X4 acidic ion-exchange resin. The products were obtained from the resin in high purity by 'catch and release' without the need for separate chromatographic purification.