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| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
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Couldwell, William T. | Hypericin: a potential antiglioma therapy | HYPERICIN, A POLYCYCLIC aromatic dione isolated from plants, is presently being clinically evaluated as an antiviral agent in the treatment of human immunodeficiency virus (HIV) infection. In addition, it is known to be a potent protein kinase C inhibitor. To evaluate its potential as an inhibitor o... | Hypericin; Protein kinase C; Glioma; Brain neoplasm | 1994 |
| 2 |
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Couldwell, William T. | Protein kinase C inhibitors suppress cell growth in established and low-passage glioma cell lines. a comparison between staurosporine and tamoxifen | WE HAVE PREVIOUSLY demonstrated that the proliferation of established human glioma cell lines correlated with protein kinase C (PKC) activity and that a relatively selective PKC inhibitor, staurosporine, inhibits glioma cell proliferation. The purpose of this study was to determine whether low-passa... | Staurosporin; Tamoxifen; Protein kinase C; Glioma; Brain neoplasm; Glioma cell lines | 1993 |
| 3 |
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Couldwell, William T. | Enhanced protein kinase C activity correlates with the growth rate of malignant gliomas in vitro | Direct measurement of protein kinase C (PKC) activity in vitro revealed a significant increase in the activity of the enzyme in all human malignant glioma lines examined and the rat C6 tumor in comparison with control nonneoplastic astrocyte and mixed glial cultures. The total and particulate PKC ac... | Brain neoplasms; Flow cytometry; Glioma; Phorbol ester; Protein kinase C | 1991 |
| 4 |
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Couldwell, William T. | Clinical and radiographic response in a minority of patients with recurrent malignant gliomas treated with high-dose tamoxifen | PREVIOUS WORK HAS demonstrated the importance of the Protein Kinase C (PKC) signal transduction system in regulating the growth rate of malignant gliomas in vitro. Tamoxifen inhibits PKC in a minority of malignant gliomas within the micromolar concentration range in vitro, a property distinct from... | Tamoxifen; Protein kinase C; Glioma; Brain neoplasm; Chemotherapy; Glioma | 1993 |
| 5 |
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Couldwell, William T. | Inhibition of cellular growth and induction of apoptosis in pituitary adenoma cell lines by the protein kinase C inhibitor hypericin: potential therapeutic application | Protein kinase C (PKC) is an enzyme involved in the regulation of cellular growth, proliferation, and differentiation in a number of tissues including the anterior pituitary, in which it is also believed to play a role in hormone secretion. Protein kinase C activity and expression have been found to... | Apoptosis; Hypericin; Pituitary adenoma; Protein kinase C | 1996 |
| 6 |
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Couldwell, William T. | Protein kinase C activity correlates with the growth rate of malignant gliomas: Part II. Effects of glioma mitogens and modulators of protein kinase C | THE PROLIFERATION RATES of gliomas may be modulated by the protein kinase C (PKC) signal transduction system. The present study was undertaken to further examine the role of PKC system in growth regulation of gliomas in vitro by measurement of PKC activity over various phases of tumor growth and by ... | Protein kinase C; Brain neoplasms; Growth factor; Glioma; Phorbol ester | 1992 |
| 7 |
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Couldwell, William T. | Paradoxical elevation of Ki-67 labeling with protein kinase inhibition in malignant gliomas | The monoclonal antibody Ki-67 recognizes a nuclear antigen expressed in the G1, S, G2, and M phase of the cell cycle and has been used extensively as an indicator of cellular proliferation in malignant gliomas, both in the laboratory and clinically. Recently, protein kinase C (PKC) inhibitors have b... | Brain neoplasm; Chemotherapy; Glioma; Monoclonal antibody; Ki-67; Protein kinase C; Tamoxifen | 1995 |
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