Antigenic complementarity among AIDS-associated infectious agents and molecular mimicry of lymphocyte proteins as inducers of lymphocytotoxic antibodies and circulating immune complexes

2004 ◽  
Vol 31 ◽  
pp. 16-25 ◽  
Author(s):  
Robert S. Root-Bernstein
2020 ◽  
pp. 8-15
Author(s):  
P. G. Kravchun ◽  
M. O. Korzh ◽  
I. P. Dunaeva ◽  
F. S. Leontieva ◽  
I. V. Gusakov ◽  
...  

A study of carbohydrate and lipid metabolism and immunological examination of patients with periprosthetic infection after knee and hip joint endoprosthetics (n = 16) and osteomyelitis (n = 20) was conducted. The patients with periprosthetic infection were characterized by anemia, eosinophilia, impaired glucose tolerance, cholestasis, predisposition to elevated atherogenesis, increased circulating immune complexes, autoimmune granulocytotoxic antibodies, immunoglobulins IgM, IgG, IgA and sensitization to synovial membrane and Staphylococcus aureus. The patients with osteomyelitis did not develop increased glucose and cholesterine level, but showed increased aminotransferases, thymol test, chondroitinsulfates, decrease of calcium and production of the leukocyte migration inhibition factor (LIF), both non-specific and to the antigens of cartilage tissue and sensitization to Streptococcus and E. coli. In patients with infections of the musculoskeletal system, glucose metabolism disturbances have been associated with the presence of autoimmune lymphocytotoxic antibodies, reduced production of LiF, both non-specific and to the antigens of synovial membrane. Atherogenesis was associated with increased circulating immune complexes, autoimmune lymphocytotoxic and granulocytotoxic antibodies, decreased LIF and sensitization to connective tissue antigens and pathogenic microorganisms, especially to Streptococcus and Proteus. Anemia was associated with increased autoimmune lymphocytotoxic antibodies, delayed-type sensitization to bone and cartilage tissue, to Staphylococcus and sensitization by accelerated type to E. coli and Proteus. Physicians should analyse immunological data while treating and monitoring the patients with connective tissue infections and disturbances of glucose and cholesterine metabolism.


2011 ◽  
Vol 65 (1-2) ◽  
pp. 13-24
Author(s):  
Natalija Fratric ◽  
Dragan Gvozdic ◽  
Olivera Savic ◽  
Ivana Jaglicic ◽  
Vesna Ilic

Pneumonia in preruminant calves is a multifactorial disease. Infectious agents, the environment, management and the immune status of the calves are all important factors in determining the outcome of an infection. Until today, the level and composition of circulating immune complexes in preruminant calves with pneumonia have not been studied in detail. We performed this work with the aim to determine whether pneumonia in three-month-old calves is followed by changes in the immune complex level and changes in the ?-globulin level as their possible constituents. Immune complexes from the calves? sera were isolated by polyethylene glycol (PEG) precipitation methods. Optical density at 350 nm (OD350) of redissolved precipitates was measured to determine the circulating immune complexes level. The OD350 level of PEG precipitates of calves with pneumonia at the time of diagnosis was 0.577?0.206 and it was statistically significantly higher (p<0.001) than OD350 the level of PEG precipitates of healthy calves (0.286?0.080). Electrophoretic analysis of sera and PEG precipitates showed that both slow and fast ?-globulins are found among serum and immune-complexes' ?-globulins, but the concentration of fast ?-globulins was significantly lower in sera of diseased calves. The level of PEG precipitable immune complexes was not correlated with the concentration of serum and PEG precipitable g-globulins. The results of this study have shown that by relatively simple PEG precipitation assay it is possible to detect an increased level of circulating immune complexes in calves with pneumonia. This can be used as an additional diagnostic parameter for the detection and follow up of the disease.


Author(s):  
K. I. Stosman ◽  
L. V. Lukovnikova

An examination was performed of 50 employees at an enterprise where they were in professional contact with beryllium. In most workers, it was detected an increase of interleukine-8, interferon- , growing level of immunoglobulin E and circulating immune complexes. It was shown that the contact with beryllium compounds leads to the interferon- level growth only in women. In men, alterations are identified in the direction of increased concentrations of common immunoglobulin E and circulating immune complexes.


BIO-PROTOCOL ◽  
2012 ◽  
Vol 2 (11) ◽  
Author(s):  
Uma Ranganathan ◽  
Ramalingam Bethunaickan ◽  
Alamelu Raja

2021 ◽  
Vol 9 (4) ◽  
pp. 712
Author(s):  
Cristina Cacheiro-Llaguno ◽  
Nuria Parody ◽  
Marta R. Escutia ◽  
Jerónimo Carnés

During canine visceral leishmaniasis (CanL), due to Leishmania infantum (L. infantum), uncontrolled infection leads to a strong humoral immune response. As a consequence of the production of high antibody levels and the prolonged presence of parasite antigens, circulating immune complexes (CIC) are formed, which can be deposited in certain organs and tissues, inducing vasculitis, uveitis, dermatitis and especially glomerulonephritis and renal failure. A method to detect CIC and quantify their levels in serum samples from dogs infected with L. infantum has been recently described. It allowed demonstration of a correlation between CIC levels and disease severity. Thus, CIC measurement may be useful for diagnosis, assessment of disease progression and monitoring response to treatment. This is an interesting finding, considering that there remains an urgent need for identification of novel biomarkers to achieve a correct diagnosis and for optimal disease staging of dogs suffering from Leishmania infection. The objective of the present review is to shed light on the role of CIC in CanL, as well as to highlight their potential use not only as diagnostic and prognostic biomarkers but also as a valuable tool in vaccine development and new immunotherapy strategies to prevent or control disease outcome.


Author(s):  
Pooja Madki ◽  
Mandya Lakshman Avinash Tejasvi ◽  
Geetha Paramkusam ◽  
Ruheena Khan ◽  
Shilpa J.

Abstract Objectives The aim of the present study is to evaluate the role of immunoglobulins (IgA, IgG, and IgM) and circulating immune complexes (CIC) as tumor marker in oral cancer and precancer patients. Materials and Methods The present study was performed on 45 individuals subdivided into three groups, that is, oral precancer, oral cancer and healthy individuals, and levels of immunoglobulins, and CIC was estimated by turbidometry and ELISA method. Results In the present study, the mean serum IgA levels in oral precancer were 161.00 ( ±  118.02) mg/dL, oral cancers were 270.67 ( ±  171.44) mg/dL, and controls were 133.73 ( ±  101.31) mg/dL. Mean serum levels of IgG in oral precancer were 1,430.87 ( ±  316) mg/dL, oral cancers were 1,234.27 ( ±  365.42) mg/dL, and controls were 593.87 ( ±  323.06) mg/dL. Conclusion We found that the levels of serum IgG and IgA were elevated consistently in precancer and cancer group, and Serum IgM levels were increased only in precancer. Also, significant increase in serum CIC levels were seen in oral precancer and cancer group on comparison with control.


1986 ◽  
Vol 60 (3) ◽  
pp. 239-243 ◽  
Author(s):  
K. Matsumura ◽  
Y. Kazuta ◽  
R. Endo ◽  
K. Tanaka ◽  
T. Inoue

AbstractThe presence of circulating immune complexes (CIC) in the sera of dogs infected with Dirofilaria immitis was detected by using a Clq-binding enzyme-linked immunosorbent assay. Specificity of this assay with different concentrations of heat-aggravated canine IgG (ACG) was observed, i.e., the ELISA readings, expressed as ug equivalents ACG/ml, increased with increasing amounts of ACG. The intra-assay variability was below 10%. The CIC levels of infected and uninfected dogs were 177–0± 104–7 ug/ml and 22–8±45–8 ng/ml (mean±SD), respectively. The highest level was observed in 12 dogs with amicrofilaraemic infection. Age distribution of CIC levels in the 23 infected dogs also showed a significant positive correlation. These findings suggested that the CIC are present in the sera of dogs with dirofilariasis and may relate to canine glomerulonephritis.


Sign in / Sign up

Export Citation Format

Share Document