No abstract

Interleukin-5 (IL-5) has been shown to be a selective eosinophil growth and differentiation factor. In the present study, the effect of recombinant human IL-5 on human eosinophil sulfidopeptide leukotriene production was investigated. IL-5 did not affect leukotriene synthesis in unstimulated eosinophils. However, IL-5 potentiated leukotriene synthesis by eosinophils stimulated with serum treated zymosan (STZ) or the calcium ionophore A23187 by 69% and 135%, respectively. The priming effect of IL-5 was dose dependent, with significant stimulation occurring at 1 000 U/ml for STZ and 100-1 000 U/ml for A23187. Pre-incubation with IL-5 did not increase leukotriene synthesis further.

The primary aim of this study was to assess the effect of coronary bypass graft surgery on certain aspects of the marital relationship and on family functioning of patients. The secondary aim was to determine which coping strategies families used postoperatively. An experimental pre- and posttest research design was used. We collected data using the Enriching and Nurturing Relationship Issues, Communication and Happiness Scale, the Family Adaptability and Cohesion Evaluation Scale II, and the Family Crisis Oriented Personal Evaluation Scales. The results indicated that bypass surgery had a negative effect on the patients' marital satisfaction, communication, and attitudes toward the division of roles in the marriage and family. Bypass surgery had a further negative influence on the emotional bonding of the patients and their spouses with other members of the family. The patients' adaptability regarding new challenges facing the family was also affected negatively. The patients who were still working also showed a greater decline in some of the measured variables than the retired patients. The coping strategies used most often by the families were the seeking of spiritual support and the reframing of the problem. The results also indicated that if passive appraisal was used as a coping strategy, the patients' marital satisfaction would decrease, and if reframing of the problem was used, the patients' adaptability regarding new challenges facing the family would increase.

113 114 1. Joosten et al.expressed on normal bovine PBMC. In IEF analysis the additional use of mAb recognizing polymorphic determinants on serologically defined A-locus products highly facilitated the detection and typing of second locus products.

Biochemical methods were used to analyse B-F and B-G antigens of the chicken major histocompatibility complex (MHC). In a panel of 12 inbred or partially inbred chicken lines the MHC haplotypes, originally defined by serological and histogenetical methods, were compared. Using monoclonal 18-662, allele-specific B-G patterns were obtained by immunoblotting. Comparison of B-GI2 and B-G2 revealed a shared banding pattern, but additional products were detected for B-G". The B-F products of B2 and BZ2 had identical IEF patterns. The identical B-F products and partially shared B-G products might explain the serological cross-reaction between these haplotypes. In addition, the IEF pattern of B-F2' appeared similar to B-F2 and B-F", but the partial proteolysis map showed a clear difference. Although two B-F bands could be detected per haplotype, no evidence for the expression of more than one B-F locus was found. The biochemical methods enabled a precise definition of expressed MHCproducts and can be a useful tool for the identification of B-alleles in other chicken lines or outbred chickens for their MHC antigens.