PubMed Health⌕ Search

Biomedical subjects

J Golder

Publications and source records attributed to J Golder.

6 recordsLinked to original sources
PubMed1988

Evaluation of MSA as a serum marker in breast cancer: a comparison with CEA.

In a blind study, 518 serum samples were assayed for serum levels of mammary serum antigen (MSA) by an enzyme immunoassay (EIA) using the 3E1.2 monoclonal antibody. Using 300 IU as the arbitrary cut off to distinguish normal from abnormal individuals, 75% of patients with primary Stage I carcinoma of the breast (n = 12), 89% of those with Stage II (n = 9) and 93% of those with Stage IV (n = 57) had elevated levels of MSA. A relationship was observed between the level of MSA and stage of disease, and therefore with the extent of tumour burden. Levels of MSA were also determined in a series of 19 patients undergoing chemotherapy for breast cancer. Over a 2-24 month period, the change of MSA levels corresponded with the clinical course of the disease in 17 (89%) cases. MSA levels were also raised in some patients with ovarian, colon, lung and kidney cancer, but the average level was lower than in patients with breast cancer. A comparison of CEA and MSA levels in these patients revealed that MSA was a substantially better marker for breast cancer than CEA. The results of this study demonstrate that MSA levels are elevated in patients with breast cancer and may provide a useful means of following the clinical course of patients with this disease.

Antigens, Neoplasm↗
PubMed1987

Mammary serum antigen (MSA) levels as a marker for breast cancer: a survey of blood donors and patients with cancer.

A murine monoclonal antibody (3E1.2) to human breast carcinoma cells was made. The antibody, which was selected for its ability to react with formalin fixed sections of the immunizing tissue, detects an antigen in the serum of breast cancer patients which we have called Mammary Serum Antigen. Immunoperoxidase staining has shown that there is an increased expression of this antigen on malignant breast epithelium compared to normal breast epithelium and other normal tissues. An assay (a serum inhibition enzyme immunoassay) using this antibody has been established to determine levels of MSA in patients' sera. Two independent studies involving greater than 2,000 blood donors and greater than 400 patients with breast cancer have shown that MSA is elevated in patients with carcinoma of the breast. MSA levels were found to be raised in approx. 2% of blood donors, approx. 55% of patients with localised breast cancer (Stage I and II) and in approx. 85% of patients with advanced breast cancer (Stage III and IV). Raised levels were also found in some patients with benign breast disease and other tumors, however these were generally much lower than those found in breast cancer patients. MSA levels may therefore be of some use for the monitoring of breast cancer patients, and as a diagnostic aid to screen populations for breast cancer.

Antigens, Neoplasm↗
PubMed1985

Preparation and characterization of human bone marrow-derived macrophages.

Bone marrow-derived macrophages were prepared from human bone marrow mononuclear cells following cultivation in GCT-conditioned medium (GCT-CM) and purification by adherence to fibronectin-coated flasks. The growth of bone marrow mononuclear cells in GCT-CM was dependent on the shape of the culture vessels, being increased in round-bottomed versus flat-bottomed wells. Proliferation was confined to nonadherent cells; like blood monocytes, bone marrow-derived macrophages did not incorporate [3H]thymidine in response to GCT-CM or human serum. Purified macrophages from this source expressed nonspecific esterase and OKM1, OKla, FMC 17, 32, and 34 and 25F9 antigens but lacked Mo2. They expressed high levels of an inactivator of plasminogen activator, minactivin, and gave a substantial metabolic burst in response to phorbol myristate acetate or opsonized (but not unopsonized) zymosan. Bone marrow-derived macrophages acted as accessory cells in the response of T lymphocytes to phytohemagglutinin. The results suggest that liquid bone marrow cultures are useful in the study of the differentiation of human mononuclear phagocytes.

Antibodies, Monoclonal↗