The immune response to alkaline phosphatase and other immunogens in patients with primary biliary cirrhosis.
Bibliographic record
Abstract
BACKGROUND/AIMS: Primary biliary cirrhosis is a potentially lethal hepatobiliary disorder in which 90% of the patients are women. Histologically, the disease is characterized by a progressive destruction of intrahepatic bile ducts by autoreactive T lymphocytes. Although the underlying etiology remains unknown, potential hypotheses must take into account; a) the predilection of the disease for women of childbearing age, b) the frequent coexistence of bone and intestinal involvement, and c) the high prevalence of autoantibodies directed towards intracellular enzymes. With these considerations in mind, we hypothesized that exposure to P-ALP (placental alkaline phosphatase) during pregnancy results in autoreactivity directed towards all human tissues harboring the ALP enzyme (liver, bone and intestine) in genetically predisposed individuals. METHODOLOGY: To test this hypothesis, we stimulated peripheral blood mononuclear cells of primary biliary cirrhosis patients (n = 17) cholestatic liver disease controls (n = 6) and healthy controls (n = 14) with P-ALP, polyclonal activators (phytohemagglutinin [PHA], anti-CD3) and recall antigens (tetanus toxoid, streptokinase). We then determined their proliferative and cytokine responses by 3H-thymidine incorporation and ELISA assays for Il-10, IL-6, tumor necrosis factor-alpha and interferon-gamma, respectively. RESULTS: The results of the study revealed that the proliferative response to P-ALP was similar in peripheral blood mononuclear cells from primary biliary cirrhosis patients, cholestatic and healthy controls. Although the proliferative responses to PHA (P < 0.001) and anti-CD3 (P < 0.001) were decreased in peripheral blood mononuclear cells from primary biliary cirrhosis patients when compared to both control groups, responses to the recall antigens; tetanus toxoid and streptokinase were similar in the three groups. Cytokine production following exposure to P-ALP, polyclonal activators or recall antigens in peripheral blood mononuclear cells from primary biliary cirrhosis patients was similar to that of cholestatic and healthy controls. CONCLUSIONS: The results of the above experiments suggest that P-ALP is unlikely to be the target autoantigen in primary biliary cirrhosis. The results also support the findings of other investigators that primary biliary cirrhosis patients have suppressed proliferative responses to polyclonal stimulation.
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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 | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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".