The Presence of Some Humoral Immunologic Indicators and Clinical Manifestations in Cryoglobulin Positive Heroin Addicts without Evidence of Hepatitis Virus Infection.

Introduction: Cryoglobulins are single or mixed immunoglobulins that are subject to reversible precipitation at low temperatures.

Objective: The aims of this paper were: 1. Comparison of cryoglobulin positive (CP), cryoglobulin negative (CN) heroin addicts and the control group (CG) in terms of serum immunoglobulins IgG, IgA and IgM and complement components C3 and C4; 2.

Role of humoral mechanisms in etiology of lichen planus.

Aim: To examine the role of IgA, CIC and component C3 as indicators of humoral immune response in the etiopathogenesis of oral erosive lichen planus (OELP).

Material And Method: The study comprised 19 patients with OELP whose samples of blood, saliva and tissue were obtained after carefully taken medical history and clinical examination. Samples of oral mucosa were taken from the site of lesion, i.

T-cell subpopulations in lesions of oral lichen planus.

Aim Of The Study: To determine the distribution and frequency of T(CD3) cells and cell sub-populations in tissue specimens of erosive lichen planus (EOLP).

Material And Method: Tissue specimens from buccal mucosa were taken from 14 healthy individuals--control group (CG)--and 17 subjects with EF-OLP. Applying monoclonal antibodies, T(CD3) cells, T cell subpopulations, The CD4, CD8 and CD4/CD8 ratios in both groups were determined.