Hand functions in systemic lupus erythematosus: a comparative study with rheumatoid  arthritis patients and healthy subjects

Abstract We present a double-antibody radioimmunoassay for determining human interleukin-6 (IL-6) in biological fluids. The detection limit of the assay is 20 ng/L (B0 - 2 SD). Bound radioactivity in the range of 30% to 90% of the B0 counts corresponds to IL-6 concentrations of 100 to 14,000 ng/L. Analytical recovery of IL-6 added to EDTA-treated plasma averaged 25% more than that added to serum. The plasma concentration of IL-6 was therefore approximately 85 ng/L more than the concentration in simultaneously drawn serum. The mean serum concentration of IL-6 in 45 healthy subjects was 83 ng/L (range 20-290 ng/L), in 20 patients with multiple myeloma 303 ng/L, in 20 patients with rheumatoid arthritis 234 ng/L, and in 13 patients with systemic lupus erythematosus 183 ng/L. Markedly increased (greater than 3000 ng/L) concentrations of IL-6 were found in sera of patients with meningococcus meningitis and infectious peritonitis.

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Analysis of Sodium Chloride Intake and Treg/Th17 Lymphocytes in Healthy Individuals and Patients with Rheumatoid Arthritis or Systemic Lupus Erythematosus

Journal of Immunology Research ◽

10.1155/2018/9627806 ◽

2018 ◽

Vol 2018 ◽

pp. 1-11 ◽

Cited By ~ 5

Author(s):

Marlen Vitales-Noyola ◽

Esther Layseca-Espinosa ◽

Lourdes Baranda ◽

Carlos Abud-Mendoza ◽

Perla Niño-Moreno ◽

...

Keyword(s):

Rheumatoid Arthritis ◽

Systemic Lupus Erythematosus ◽

Lupus Erythematosus ◽

Healthy Subjects ◽

Th17 Cells ◽

Sodium Intake ◽

Treg Cells ◽

Systemic Lupus ◽

Immune Parameters

We assessed different immune parameters in patients with rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE) with low (LSI) and high (HSI) sodium intake. Thirty-eight patients with RA, thirty-seven with SLE, and twenty-eight healthy subjects were studied and classified as LSI or HSI. Levels and suppressive function of CD4+CD25+Foxp3+ and CD4+CD69+Foxp3− Treg cells were determined by flow cytometry in blood samples. Levels and in vitro differentiation of Th17 cells were also assessed. Similar levels of CD4+CD25+Foxp3+ and CD4+CD69+Foxp3− Treg cells were observed in LSI and HSI patients or controls. However, a positive correlation was detected between sodium intake and levels of CD4+CD25+Foxp3+ Treg cells in SLE and a negative association between CD4+CD69+Foxp3− Treg cells and sodium intake in RA. No other significant associations were detected, including disease activity and sodium intake. Moreover, the suppressor activity of CD4+CD25+Foxp3+ and CD4+CD69+Foxp3− Treg cells was similar in LSI and HSI patients or controls. The levels and in vitro differentiation of Th17 cells were also similar in LSI and HSI individuals. Our results suggest that, in the population studied (Mexican mestizo), the level of sodium intake is not apparently associated with different relevant immune parameters in healthy subjects or patients with SLE or RA.

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A Functional Ser413/Ser413 PAI-2 Polymorphism Is Associated With Susceptibility and Damage Index Score in Systemic Lupus Erythematosus

Clinical and Applied Thrombosis/Hemostasis ◽

10.1177/1076029607308868 ◽

2008 ◽

Vol 15 (2) ◽

pp. 233-238 ◽

Cited By ~ 11

Author(s):

Claudia A. Palafox-Sánchez ◽

Mónica Vázquez-Del Mercado ◽

Gerardo Orozco-Barocio ◽

Ignacio García-De la Torre ◽

Norma Torres-Carrillo ◽

...

Keyword(s):

Rheumatoid Arthritis ◽

Systemic Lupus Erythematosus ◽

Lupus Erythematosus ◽

Healthy Subjects ◽

Damage Index ◽

Index Score ◽

Systemic Lupus ◽

Risk Of Mortality ◽

Increased Risk ◽

Significant Difference

Systemic lupus erythematosus in some cases is characterized for development of thrombotic events with a significantly increased risk of mortality. The frequencies and clinical associations of Ser413/Cys413 PAI-2 polymorphism in 40 systemic lupus erythematosus, 50 rheumatoid arthritis patients, and 100 healthy subjects were investigated. The Ser413/Ser413 genotype frequency was 53% (lupus), 36% (rheumatoid arthritis), and 35% (healthy subjects). The Ser413 allele was associated with systemic lupus erythematosus ( P = .04, odds ratio = 1.76, 95% confidence interval = 1.01-3.06). In all, 4 patient carriers of Ser413/Ser413 genotype, developed thrombotic events. The lupus patients identified with Ser 413/Ser413 genotype showed an increased damage (57%), compared with Ser413/Cys413 and Cys413/Cys413 genotypes, with significant difference ( P = .03). These findings suggest an association of Ser413/Ser413 genotype with greater damage index score and Ser413 allele with systemic lupus erythematosus. Besides, PAI-2 polymorphism could be related with thrombotic phenomena in systemic lupus erythematosus

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