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Biomedical subjects

S E Order

Publications and source records attributed to S E Order.

At least 109 records · Page 6Linked to original sources
PubMed1981

Antiferritin IgG antibody for isotopic cancer therapy.

Radiolabeled antiferritin IgG will target ferritin-bearing tumors such as hepatoma, lung cancer, and neuroblastoma. In hepatoma 4 of 5 patients have had clinical remission of malignancy following intravenous doses up to 150 mCi of radiolabeled antiferritin IgG. The dosimetry of radiolabeled 131I-antiferritin reveals a 3-day effective half-life, low dose rate isotopic implant of tumors 5 rad/h, 2,000-3,000 rad to the tumor, and a tumor half-life of 7.7 days. The possibilities of this new cancer agent are discussed in regard to isotopes, greater antibody specificity, and methods of evaluation.

Adolescent↗
PubMed1980

The 85th frontier.

Eighty-five years ago, radiation therapy was discovered, with the restriction of treatment being skin tolerance. This led to time-dose graphs quantitating cure or necrosis. The advent of supervoltage radiation, with skin sparing, treatment simulation and planning, immobilization devices, focus blocks, and computerized tomographic scans, ushered in the era of precision treatment. Radiobiology introduced the hypoxic core and radiation sensitizers. New data concerning the biologic principles of fractional dose, total dose, homogeneity, low-dose implantation, and integration of radiation with surgery, as well as recent protocols, indicate new opportunities for increased local control, cure, and improvement in quality of life.

Brachytherapy↗
PubMed1980

Distribution and tissue dose of intraperitoneally administered radioactive chromic phosphate (32P) in New Zealand white rabbits.

Radiophosphorus (32P) has become the preferred radioisotope for intraperitoneal radiotherapy in the adjuvant treatment of ovarian cancer. In a study of the distribution and tissue dose of intraperitoneally administered 32P in rabbits, effective half-lives of 32P and the radiation dose absorbed by intra-abdominal tissues were determined. Results show that 32P is not uniformly distributed over the peritoneal surfaces and that many areas are minimally irradiated. It is concluded that a significant fraction of the 32P distribution is systemic and that the beta-ray dose for intra-abdominal tissues is much lower than suggested by theoretical models.

Animals↗
PubMed1980

Use of isotopic immunoglobulin in therapy.

Antibodies raised in heterologous species against tumor-associated antigens such as ferritin and carcinoembryonic antigen may be utilized in diagnostic scanning and in cancer therapy. The radiolabeled (131I) antibodies have a mean effective half-life of 3 days. The tumor-bearing regions retain activity which was associated with objective evidence of remission in primary hepatic cancers. Major organ toxicity was not apparent in eight of nine patients treated with radioactive antibody. Objective evidence of clinical remission was documented by computer-assisted axial tomography scan remission in sequential studies that determine residual tumor in the same planar cuts. Future possible improvements in radioimmunoglobulin are discussed in light of the clinical findings.

Carcinoembryonic Antigen↗