Biomedical subjects
Publications and source records attributed to P Klaritsch.
The aim of this study was to analyse changes in peripheral oxygenation in healthy term neonates within the first week of life with near-infrared spectroscopy and venous occlusion. Oxygen delivery did not change with increasing age. Oxygen consumption and fractional oxygen extraction increased, whereas tissue oxygenation index decreased with increasing age.
INTRODUCTION: The efficacy of high-dose chemotherapy plus transplantation of autologous hematopoetic stem cells in patients with endometrial stromal sarcomas is unknown. CASE REPORT: A 39-year-old woman with Stage III endometrial stromal sarcoma (ESS) underwent radical surgery, followed by five courses of ifosfamide, adriamycin and dacarbazine postoperatively. Six months after primary surgery stem cell priming was performed. Five months later bone marrow was aspirated and high-dose chemotherapy with carboplatin, vepeside and holoxan were administered after which bone marrow was retransfused. Seven years after primary surgery the patient developed an abdominal recurrence which was removed surgically and adjuvant radiotherapy was administered. One year later the patient underwent hemicolectomy because of a new recurrence infiltrating the ascending colon. Treatment with 25 mg exemestane was begun. The patient is currently alive and free of disease nine years after the initial diagnosis. CONCLUSION: Aggressive chemotherapy with autologous stem-cell support seems to be ineffective in patients with ESS.
OBJECTIVE: To evaluate the prognostic significance of preoperative DNA flow cytometry compared with other clinical and histologic variables in cervical carcinoma. STUDY DESIGN: Sixty-four patients with FIGO Stage Ib-II cervical cancer treated with radical abdominal hysterectomy and systematic pelvic lymphadenectomy were analyzed. The mean follow-up was 3.4 (range 0.3-9.8) years. DNA flow cytometry was performed with fresh tumor tissue. Four biopsies were recut from the surgical specimen within 30 minutes of the operation. The ectocervix was divided into four quadrants and a specimen obtained from each. DNA-low-grade tumors (diploid, near-diploid, tetraploid and near-tetraploid) were distinguished from DNA-high-grade tumors (aneuploid and hypoploid). Carcinomas with more than one non-diploid stem line were considered heterogeneous. An S phase fraction >7% was classified as low, 7% - < 14% as moderate, and > or = 14 as high. DNA ploidy, DNA heterogeneity, S phase fraction and various clinical and histological variables were related to disease-free survival. RESULTS: In the univariate analysis patients with DNA-low-grade carcinomas had significantly better disease-free survival than patients with DNA-high-grade tumors (82% vs 45%, p = 0.021). Carcinomas with an S-phase fraction < 7% were associated with better disease-free survival (0.8) than those with an S-phase fraction 7% - > 14% (0.62) and those with > or = 14% (0.64), but this was not statistically significant. Cox stepwise regression analysis showed DNA-heterogeneity, age, grade, parametrial involvement and extrapelvic metastasis to be independent prognostic factors. CONCLUSION: DNA ploidy and DNA heterogeneity are of prognostic importance in cervical cancer. DNA flow cytometry may be used preoperatively to identify low-risk and high-risk patients within a given stage.