PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “ARTHRITIS/experimental”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 19 recordsLinked to original sources

The effect of egg yolk in diets on anaphylactic arthritis (passive Arthus phenomenon) in the guinea pig.

WHOLE EGG YOLK INCORPORATED AS A SUPPLEMENT IN THE DIET OF BABY GUINEA PIGS AFFORDED PROTECTION AGAINST ANAPHYLACTIC ARTHRITIS AS DETERMINED: (a) by measurement of joint swelling; (b) by the rise in serum level of some substance which reacts with diphenylamine; (c) by histologic examination. The active material in egg yolk was shown to be in the alcohol-soluble fraction. Attempts to identify the active material with any known lipid have to date been unsuccessful. In the screening of lipid substances for protection against anaphylactic arthritis, it is shown that the weanling guinea pig is suitable, that a 3 week period is adequate, and that the test substance can be administered satisfactorily in the diet.

Animals↗

Studies of arthritis and other lesions induced in rats by injection of mycobacterial adjuvant. V. Changes affecting the skin and mucous membranes. Comparison of the experimental process with human disease.

A generalized disease is induced experimentally in the rat by administration of Freund's adjuvant. The primary clinical and pathologic lesions are arthritis, periarthritis, peritendinitis, and periostitis in the joints of the extremities and tail. Accompanying the arthritis in some cases, and never observed in its absence, are other specific tissue lesions including iridocyclitis, nodular lesions in the glabrous skin (ear, genitalia, feet, tail), transient rashes, a chronic skin disease, genitourinary lesions, and diarrhea. These make up a striking and characteristic picture. The arthritis usually precedes the other lesions and, together with the skin disease may show a prolonged and fluctuating course. Visceral lesions do not occur. Histologically, the basic lesion is a lymphocytic and histiocytic infiltration, initially perivascular and subsequently more disseminated. In addition, in the region of the joints and in the corpora cavernosa of the penis, there is extensive proliferation of mesenchymal cells, especially fibroblasts. Foci of fibrinoid necrosis are seen in the articular and nodular lesions, and destructive lesions of the joints are common. Such a combination of tissue lesions has not previously been described in experimental pathology. The experimental disease is shown to have both similarities to and differences from Reiter's syndrome, rheumatoid arthritis, and certain other disorders which occur in man.

Adjuvants, Immunologic↗

Protection of rats against adjuvant arthritis by bacterial lipoplysaccharides.

Lipopolysaccharides from both gram-negative and gram-positive bacteria in incomplete adjuvant caused rats to become resistant to mycobacterial (complete) adjuvant arthritis. Lipopolysaccharides h protected rats when they were administered in adjuvant did not protect when administered in saline. Mycobacterial wax D in saline was protective, while in adjuvant it produced arthritis. The degree of stimulation of a common tissue reaction may determine whether the result is protection or disease.

Animals↗