For some years there has been intense interest in the problem of cellular expression of immune response (Ir) 1 genes. Initial experiments suggested that T cells alone were responsible for Ir manifestations since, for example, mice which were low responders to poly-L-(Tyr,Glu)-poly-D,L-Ala--poly L-Lys [(TG)-A--L] could make antibodies to this antigen coupled to methylated bovine serum albumin (1...

Antibody response to different doses of (T,G)-Pro--L, given in aqueous solution, was investigated in the high responder SJL and low responder DBA/1 strains by measuring hemolytic plaque-forming cells (PFC) in the spleens as well as hemagglutination titers in the sera. The gene responsible for the difference between the two strains in the response to this antigen, given in complete Freund's adju...

In order to utilize the mixed lymphocyte reaction (MLR) as an assay of T-lymphocyte competence, pools of target lymphocytes obtained from different individuals are used to increase the magnitude and decrease the variation of the in vitro response. We evaluated variations in MLR response due to variations in target cell populations. Response increased with an increased target/responder cell r...

Human cytomegalovirus (CMV) infection has been linked to inflammatory diseases that involve vascular endothelial damage, including vascular disease and chronic transplant rejection. We previously reported that the host CD4(+) T-cell response to CMV antigen presented by endothelial cells can produce interferon-gamma and tumor necrosis factor-alpha at levels sufficient to drive induction of fract...

The aim of current study was evaluating the frequency of clopidogrel resistance and its impact on clinical outcome of patients in Iranian patients. Patients undergoing percutaneous coronary intervention in Imam Hussein Medical center, Tehran, Iran, who received standard dosage of clopidogrel (Plavix®, Sanofi, France, 600 mg loading dose and 75 mg/day afterward) were recruited. Platelet aggregat...

The aim of current study was evaluating the frequency of clopidogrel resistance and its impact on clinical outcome of patients in Iranian patients. Patients undergoing percutaneous coronary intervention in Imam Hussein Medical center, Tehran, Iran, who received standard dosage of clopidogrel (Plavix®, Sanofi, France, 600 mg loading dose and 75 mg/day afterward) were recruited. Platelet aggregat...

Erythrocytes from the same mouse strains gave similar results; here the cell number was increased to 109/ml to obtain a significant difference between curves for highand low-responder mice. It is possible that these results are affected by contamination with mouse ferritin from the spleen or plasma despite washing of cells. To minimize possible contamination by mouse ferritin, lymph-node cells,...

We sought to examine the role of immune response (Ir) genes in helper T cells. To eliminate allogeneic effects, we used neonatally tolerized mice. The results bear not only on the mechanism of Ir genes, but also on the development of the T cell repertoire. B 10.BR (H-2(k)) or C57BL/10 (H-2(b)) mice, which were low responders to myoglobin (Mb), were neonatally tolerized to high responder H-2(d) ...

The question of whether or not lymphoid cells can cooperate across a histocompatibility difference barrier has been studied in several laboratories. Using an adoptive transfer system, Katz et al. (1) first showed that T cells from (low responder x high responder) F(1) mice, primed to the terpolymer L-glutamic acid, L-lysine, L-tyrosine (GLT), could collaborate with 2,4-dinitrophenyl (DNP)-prime...

Background: Lithium is a therapeutic option for the treatment of the acute phase of the bipolar disorder and long-term management of this disorder. However,  it  is  estimated  that  10  to  60%  of  patients  do  not  properly response to this medication. Methods: To investigate the role of MARK2 gene in response to lithium, we genotyped the MARK2 rs10792421 polymorphism in Iranian bipolar pa...