Effect of G-1 column (Adacolumn) therapy in rats with adjuvant arthritis on the migration and immunoreactivity of peripheral and splenic leukocytes
Bibliographic record
Abstract
The G-1 column (Adacolumn), a novel extracorporeal adsorption device, is now available for the treatment of such chronic inflammatory diseases as ulcerative colitis and rheumatoid arthritis. G-1 column treatment sometimes results in a rapid decrease in clinical inflammatory parameters and/or has a delayed beneficial effect on disease activity. In order to identify the scientific basis for such clinical benefits, we studied rats with adjuvant arthritis induced by immunization with Mycobacterium butyricum antigen. The potential role of G-1 column treatment on the migratory properties and immunoreactivities of leukocytes was investigated. Treatment of arthritic rats for 60 min with an extracorporeal perfusion through the G-1 column led to the adsorption of a small proportion (20%) of circulating granulocytes and monocytes. However, after G-1 treatment, the migration of radiolabeled blood granulocytes and monocytes to sites of acute dermal inflammatory reactions decreased significantly, in the case of granulocytes, almost by half. The migration of granulocytes to the inflamed hindpaws of severely affected animals was diminished in the G-1 treated group. Granulocytes that have passed through the G-1 column may stay in the bloodstream because of their markedly diminished number of adhesion molecules. A slightly increased accumulation in the liver and a decreased localization in the lung was also observed. These results may be relevant to the rapid clinical anti-inflammatory effect observed in rheumatoid arthritis and possibly also in ulcerative colitis, without any pulmonary complications. In contrast, the adsorption rate by the G-1 column of T lymphocytes was very low, and their migration pattern to sites of dermal inflammatory reactions was not altered after treatment. However, the antigen (Mycobacterium purified protein derivative) reactivity of T lymphocytes in blood was almost completely abolished after G-1 column treatment of arthritic rats. This unexpected qualitative effect on T lymphocytes of G-1 treatment warrants further detailed study.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".