Simple differentiation between core-fucosylated and nonfucosylated glycans by capillary electrophoresis.

Core-fucosylated glycans, derivatized with 2-aminoacridone, consistently migrate slower than the corresponding oligosaccharides which lack this fucose residue, using the micellar electrophoretic capillary chromatography conditions outlined in this study. alpha-Fucosidase digestion of glycans followed by CE analysis has allowed facile differentiation of these two classes of oligosaccharides and this methodology has been applied to obtain preliminary information on the carbohydrate content from two glycoproteins, a monoclonal IgG antibody and the soluble complement receptor type 1 (sCR1).

Effect of the addition of adrenaline to extradural diamorphine analgesia after caesarean section.

In a randomized double-blind study the effect of the addition of adrenaline to extradural diamorphine was assessed in 54 patients after Caesarean section. Patients received extradural diamorphine 5 mg in saline 10 ml with or without adrenaline 1 in 200,000 for postoperative pain relief. Analgesia was profound and of rapid onset in both groups. Duration of analgesia was greater in the adrenaline group (time to next analgesia 12.51 +/- 0.94 h, mean +/- SEM), than in the saline group (9.87 +/- 0.98 h) (P = 0.057). Analgesia was also more consistent in the adrenaline group, with 77% of patients having more than 8 h of good analgesia compared with 48% in the saline group (P less than 0.05). Plasma morphine concentrations, measured in 12 patients, were lower, although not significantly so, in the adrenaline group and mean time to peak concentration markedly delayed. No serious side effects were observed, but there was a higher incidence of vomiting in the adrenaline group.

Double-blind comparison of the efficacy of extradural diamorphine, extradural phenoperidine and i.m. diamorphine following caesarean section.

A randomized, double-blind study of the efficacy, duration of action and side effects of three analgesic regimens following Caesarean section is described. Patients received i.m. diamorphine 5 mg, extradural phenoperidine 2 mg or extradural diamorphine 5 mg. Analgesia was of rapid onset in all groups, as judged by reductions in linear analogue pain scores and rank pain scores. Time to next analgesia was significantly greater after extradural phenoperidine (5.96 h) and extradural diamorphine (8.39 h) than after i.m. diamorphine (3.40 h) (P less than 0.001). Itching was reported on direct questioning by 50% of patients in the extradural groups. No serious side effects were reported. Factors affecting the disposition of extradurally administered diamorphine are discussed.

Continuous subcutaneous infusion of morphine for postoperative pain relief.

A double-blind randomised study of 48 patients in whom continuous subcutaneous infusion and regular intramuscular injection of morphine were compared as analgesic regimens after upper abdominal surgery, is described. Over a 48-hour period, no difference in pain intensity between the two groups was found by comparing linear analogue scores, assessments on a four-point rank scale, peak expiratory flow rates or requirement for additional analgesia. Nausea and sedation were assessed using a four-point rank scale. These side effects were less frequent with subcutaneous infusion (p less than 0.05). Two patients from each group were judged to have received an overdose. The infusion apparatus was simple and convenient to use. Continuous subcutaneous infusion of morphine is a practical and effective means of achieving post-operative analgesia but, as with other mandatory dosing regimens, relative overdosage may occur.