Evaluation of Progenitor Cells (CFU-GM, CFU-GEMM, BFU-E, CD34+ Cells) and White Blood Cells in Patients with Newly Diagnosed Diffuse Large B-Cell Lymphoma Treated with Rituximab-CHOP-14 and Supported with Pegfilgrastim.
Bibliographic record
Abstract
Abstract Purpose: To investigate the behavior of CFU-GM, CFU-GEMM, BFU-E, CD34+ cells and white blood cells before and during six courses of dose-dense immune-chemotherapy (R-CHOP-14) supported by pegfilgrastim in eight patients affected with newly diagnosed diffuse large B cell lymphoma (3 men, 5 women, aged 18–51). Patients and Methods: The standard-dose CHOP chemotherapy was delivered every 14 days, preceded on day 1 by rituximab (375 mg/m2) and followed on day 3 by pegfilgrastim (6 mg per cycle). In each course of therapy, the evaluation was performed before treatment (day 1) and on days +3, +6, +8, +10 and +13. Hemopoietic progenitors were assayed in a complete StemCell medium (MethoCultTM GF H4434 StemCell, Canada) and counted with an inverted microscope after 14-day incubation at 37°C, in 5% CO2. CD34+ cells were evaluated with flow cytometry (EPICS XL, Beckman Coulter); WBC were evaluated with an automatic counter (ADVIA 120 Bayer). Results: The peak of CFU-GM, CFU-GEMM, BFU-E colonies and of CD34+ cells was invariably reached on day +13 and the highest absolute values were detected after the first cycle of therapy: CFU-GM/ml 3704±738; CFU-GEMM/ml 199±62; BFU-E/ml 8848±3499; CD34+cells/μL 33±3. In the subsequent courses, the number of both hematopoietic colonies and of CD34+ cells progressively lowered; however, the median value of CD34+ cells was still over 20/μL (range 20–35/μL) before the start of the fourth cycle of R-CHOP-14. A significant direct correlation was found between the number of CFU-GM, CFU-GEMM and BFU-E colonies and that of CD34+ cells (p<0.05). The WBC peak was constantly reached on day +6, with a mean value, all cycles considered, of 32±14 x 109/l. Comments: Hemopoietic progenitor cells kynetic showed that colonies and CD34+ cells started to increase at the WBC nadir. Most important, the level of circulating CD34+ cells at day 13 of the first three cycles of therapy was above 20/μL which we consider permissive for a productive leukaferesis; this observation adds further evidence of the pegfilgrastim progenitor cells mobilizing capacity.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 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 source (direct Gemma or distilled Codex), 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".