CIRCULATING IMMUNE-COMPLEXES IN SYSTEMIC AMYLOIDOSIS

WOS: A1981MF98300005PubMed ID: 7341031

Circulating immune complexes in systemic amyloidosis

PubMedID: 7341031Serum immune complexes were measured in patients with immunocytic amyloidosis (8 patients), reactive amyloidosis (6 patients), and amyloidosis secondary to familial mediterranean fever (11 patients). 125I-Clq-binding method and 4% PEG precipitation methods were employed for immune complex determinations. Immune complexes were found in three patients with immunocytic amyloidosis, in all cases of reactive amyloidosis and in nine with amyloidosis secondary to FMF. Immunoglobulins found in the complexes were mainly IgG and IgM in all three groups. © 1981

GLUCOSE-6-PHOSPHATE-DEHYDROGENASE DEFICIENCY IN CUKUROVA PROVINCE, TURKEY

WOS: A1981LM63600006PubMed ID: 7239758

Apoplastic Antioxidant Enzymes in the Leaves of Two Strawberry Cultivars and Their Relationship to Cold-Hardiness

In this study, apoplastic antioxidant enzymes in the leaves of two strawberry cultivars (‘Aromas’ and ‘Diamante’) and their relationshipto cold-hardiness were investigated. Fully expanded, uniformly sized leaves from 1-year-old field plants of the cultivars were collected atthe hardening (late autumn, in November and winter, in January) and de-hardening (summer, in July) stages. Leaf samples were exposedto low temperatures of 5, -5, -10, -20 and -30ºC for 12 h to determine their cold-hardiness (LT50; lethal temperature, where 50% of theplants were killed). Cold-acclimation produced a remarkable increase in cold-hardiness. It was found that ‘Diamante’ had higher coldhardinessthan ‘Aromas’. Moreover, malondialdehyde and total carotenoid content increased during the hardening stage and decreasedduring the de-hardening stage. The activities of catalase, peroxidase and ascorbate peroxidase in the leaf apoplast and nicotinamideadenine dinucleotide phosphate oxidase activity in the leaf tissue were correlated with changes in cold-hardiness. The activities of theseenzymes were higher in the hardening stage than in the de-hardening stage. The activities of apoplastic catalase, peroxidase and ascorbateperoxidase varied significantly depending on the cold-acclimation stage and the cold-hardiness level of the cultivars. This study indicatesthat elevated apoplastic antioxidative enzymes may be determinants of cold-hardiness in the strawberry plant. The lower malondialdehydecontent and higher total carotenoid and apoplastic enzyme activities in ‘Diamante’ indicated an enhanced cold-hardiness capacity of thiscultivar, serving to protect the plant from oxidative damage