Angiogenesis Following Three-Dimensional Culture of Isolated Human Endometrial Stromal Cells
Bibliographic record
Abstract
Background: Endometriosis is the presence of endometrial tissue outside of the uterine cavity andis the most common gynecologic disorder in women of reproductive age. We have preliminaryevidence that in the presence of a 3-dimensional (3-D) fibrin matrix, human endometrial glands,stroma, and neovascularization can develop in vitro, mimicking the earliest stages of endometriosis.The aim of the present study was to determine if angiogenesis can be developed in a 3-D culture ofhuman stromal cells in vitro.Materials and Methods: This was an in vitro study of human endometrial biopsies in 3-D cultureof fibrin matrix and conducted at a university affiliated infertility center. Biopsies were taken fromten normal ovulating women undergoing infertility treatment. The samples obtained from fundusof the uterine cavity were minced, stromal cells isolated and placed in a 3-D fibrin matrix culturesystem. Degree of proliferation of stromal cells, invasion of the fibrin matrix, gland formation, vesselsprouting and immunohistochemical characterization of cellular components were recorded.Results: Three-dimensional culture of human stromal cells formed sheets of cells in the fibrinmatrix. By 3-4 weeks, endothelial cell branching was observed and rudimentary capillary-likestructures formed and endothelial cells confirmed by CD31 immunostaining.Conclusion: These data show that stromal cells from endometrial explants can proliferate andinvade a fibrin matrix in vitro generating new vessels. This procedure represents a controlled,quantifiable model for the study of angiogenesis during the menstrual cycle, and in conditions suchas endometriosis and cancer.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.007 | 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".