317 Anti-drug antibody formation against biological agents in psoriasis

SummaryApproximately 14% of transfused hemophiliacs develop an anti-factor VIII inhibitory antibody which specifically neutralizes factor VIII procoagulant activity. In this study an association of the major histocompatibility complex (MHC) with inhibitor antibody formation was evaluated by restriction fragment length polymorphism (RFLP) analysis using BamHI, EcoRI, HindII, PstI, PvuII and TaqI digested genomic DNA probed with DP beta, DQ alpha, DQ beta and DR beta class II MHC gene probes. The RFLP patterns for 16 non-inhibitor and 11 inhibitor hemophiliac patients were analyzed. These 24 enzyme:probe combinations generated 231 fragments. Fifteen (15) fragments associated with the inhibitor phenotype; odds ratios ranged from 5.1 to 45 and lower bounds of 95% confidence intervals were > 1.000 for all 15 fragments. Five (5) fragments associated with non-inhibitors, with odds ratios ranging from 6.4 to 51.7. This report establishes a MHC related genetic basis for the inhibitor phenotype. No statistically significant differences in the distribution of serologically defined HLA-DR phenotypes were observed between the inhibitor and non-inhibitor groups.

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Low rate of neutralising antibody formation to botulinum toxin type A in the course of treatment of primary axillary hyperhidrosis

Aktuelle Neurologie ◽

10.1055/s-2005-919411 ◽

2005 ◽

Vol 32 (S 4) ◽

Cited By ~ 1

Author(s):

M Naumann ◽

H Hamm ◽

D Glaser ◽

S Daggett ◽

C Kumar ◽

...

Keyword(s):

Botulinum Toxin ◽

Antibody Formation ◽

Botulinum Toxin Type A ◽

Type A ◽

Botulinum Toxin Type ◽

Axillary Hyperhidrosis ◽

Low Rate

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248. OSHA upate: Respiratory Protection Against TB and other Biological Agents

10.3320/1.2758609 ◽

2005 ◽

Author(s):

M. Sands

Keyword(s):

Biological Agents ◽

Respiratory Protection

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261. Study of the Biological Agents and Ergonomic Constraints Involved in the use of Trucks With Articulated Arms for Household Waste Collection

10.3320/1.2758033 ◽

2003 ◽

Author(s):

J. Lavoie ◽

S. Guertin

Keyword(s):

Biological Agents ◽

Household Waste ◽

Waste Collection

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THE HEXOSAMINE CONTENT OF THE ORBIT IN RELATION TO ANTI-THYROTROPHIN ANTIBODY TITRES IN SERA OF THYROTROPHIN-TREATED RABBITS WITH AND WITHOUT CORTISONE ADMINISTRATION

Acta Endocrinologica ◽

10.1530/acta.0.0410474 ◽

1962 ◽

Vol 41 (3) ◽

pp. 474-480 ◽

Cited By ~ 2

Author(s):

Otto Wegelius ◽

E. J. Jokinen

Keyword(s):

Connective Tissue ◽

Guinea Pigs ◽

Antibody Formation ◽

Direct Proof ◽

Significant Rise ◽

Extraocular Muscles ◽

Concomitant Treatment ◽

Antibody Titres ◽

Hexosamine Content ◽

Synergetic Action

ABSTRACT In all previous investigations on experimental exophthalmos, heterologous thyrotrophic pituitary extracts have been used. These protein hormones stimulate antihormone formation in the test animals. Cortisone has been reported to effectively block antibody formation. In addition, it has been shown to potentiate TSH-induced exophthalmos in guinea-pigs. With rabbits as test animals, the hexosamine content of the orbital tissues was determined and used as an index of exophthalmos development and at the same time the antibody titres in the sera were followed. TSH injections for six weeks led to a highly significant accumulation of hexosamine in the retrobulbar connective tissue and in the extraocular muscles, i. e. an increase of up to 400% as compared with the control animals. At the same time a significant rise in antihormonal titres was detectable in the sera. Concomitant treatment with cortisone brought about an equal or higher accumulation of hexosamine but significantly lower antibody titres. The known opposite peripheral actions of TSH and cortisone can be reconciled with the synergy in producing experimental exophthalmos by attributing the synergetic action of cortisone to the blocking of antihormone formation. If less antihormones are produced, the effect of TSH is enhanced. Our experiments do not provide direct proof for this hypothesis. High hexosamine values in the orbit and low antihormone titres in the serum are, however, concomitant phenomena.

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