Biologically Active Polysaccharides

Biologically active endotoxins from Salmonella mutants deficient in O- and R-polysaccharides and heptose.

Well-characterized Salmonella mutants formerly used in biosynthetic studies of lipopolysaccharides were used to study the toxic portion of the complex endotoxin. Endotoxins prepared from wild types and their mutants were tested for their biological activities, including pyrogenicity, lethality, and immunogenicity. There was little difference either in the endotoxin yields or in the toxicities b...

Respiratory Tract Infections and the Role of Biologically Active Polysaccharides in Their Management and Prevention

Respiratory tract infections (RTIs) are the most common form of infections in every age category. Recurrent respiratory tract infections (RRTIs), a specific form of RTIs, represent a typical and common problem associated with early childhood, causing high indirect and direct costs on the healthcare system. They are usually the consequence of immature immunity in children and high exposure to va...

BIOLOGICALLY ACTIVE SYNTHETIC POLYMERSt

The 1:2 divinyl ether-maleic anhydride cyclic alternating copolymer (DIVEMA) shows a wide variety of biological activities. It has antitumor activity; it induces the formation of interferon; it has antiviral, antibacterial, and antifungal activity; it is an anticoagulant and an anti-inflammatory agent. DIVEMA is an immunopotentiator; it increases the rate of phagocytosis, it activates macrophag...

[Biologically active peptides].

Medical Uses: Biologically Active Substances