Shori Kanoh

Establishment of a New Prostatic Carcinoma Cell Line (TSU-PR1)

A new epithelial cell line, TSU-Pr1, from a human prostatic adenocarcinoma metastatic to lymph node has been established in long term tissue culture. The cultured cells show loss of contact inhibition, rapid growth in vitro and growth in athymic nude mice. Karyotypic analysis demonstrated an aneuploid karyotype with a modal chromosome number of 80 including a Y-chromosome and at least 10 marker chromosomes. The cells produced only a small amount of prostatic acid phosphatase, and heterotransplanted tumors did not have nuclear androgen receptors.

Xanthogranulomatous pyelonephritis in childhood: case report and review of English and Japanese literature.

Xanthogranulomatous pyelonephritis is an uncommon disease that is usually seen in middle-aged women and is much rarer in children. We report a case of diffuse xanthogranulomatous pyelonephritis in a 3-year-old boy who had a nonfunctioning hydronephrotic right kidney on an excretory urogram. A review of the English and Japanese literature on xanthogranulomatous pyelonephritis in childhood revealed 2 remarkable differences regarding the incidence of sex and radiological findings. The majority of patients were girls in the English literature, whereas the opposite sex was seen in the majority of cases in Japan. The involved kidney was functioning on an excretory urogram in the majority of cases reported in the English literature, however, in all cases from Japan the involved kidney was non functioning. These findings further support the newer concept that xanthogranulomatous pyelonephritis in childhood exists in focal as well as diffuse forms.

Establishment of a Model to Evaluate Inhibition of Bone Resorption Induced by Human Prostate Cancer Cells in Nude Mice

A model system of human prostate carcinoma in nude mice for searching out a method to protect the bone from cancer cells is described, in which the transplanted human prostate cancer cells were inoculated subcutaneously over the calvaria in nude mice after the periosteum wa disrupted. The tumor induced osteolysis associated with osteoclast proliferation accompanied with reactive new bone formation. This osteolysis was evaluated by measuring the increased area of bone resorption by its reduced opacity to X-ray, and histology. Etidronate disodium, a diphosphonate derivative, at a dose of three mg./kg. and 10 mg./kg. s.c. protected the bone by decreasing the extent of osteolysis as judged by the above criteria. This inhibition was obtained with no apparent effect on the growth of the tumor. These results are discussed in light of recent clinical work, showing that this animal model is a useful tool to test the effect of new drugs against osteolysis of cancer as well as to study the biology of local interaction between bone and cancer cell.

Renal Autotransplantation for Localized Amyloidosis of the Ureter

Localized amyloidosis of the ureter is a relatively rare disease, causing at times ureteral stenosis with hydronephrosis and renal function impairment to various extent. Although it is not malignant nearly all reported cases have been treated by nephroureterectomy because it is clinically difficult to differentiate this entity from ureteral malignancy. We report a case in which the ipsilateral kidney was salvaged successfully by renal autotransplantation. To the best of our knowledge, this is the first case reported of renal autotransplantation for localized amyloidosis of the ureter in the English literature. We suggest that renal autotransplantation be considered in cases of localized ureteral amyloidosis.

Studies on platelet function in patients with prostatic cancer: Preliminary report

Platelet function was evaluated as an index of the thromboembolic tendency in patients with untreated, advanced prostatic cancer. Patients with benign prostatic hypertrophy (BPH) and similar age distribution served as a comparison group. Platelet aggregations were elevated in both groups, but not significantly different from each other. Platelet serotonin level in patients with prostatic cancer was lower than in patients with BPH (p less than 0.01), whereas plasma serotonin level in patients with prostatic cancer (within normal ranges in our series) was lower than in patients with BPH (p less than 0.001). Levels of 2 intraplatelet proteins, beta-thromboglobulin (beta-TG) and platelet factor 4 (PF4) in the two groups of patients were similar. However, levels of beta-TG were elevated significantly in both groups of patients compared with those of healthy individuals. These studies revealed that the platelet serotonin levels in advanced prostatic cancer patients differed significantly from those in patients with BPH. The platelet serotonin level thus may provide an index of platelet activation in patients with prostatic cancer.

Circulating Immune Complexes and Immunosuppressive Acidic Protein in Patients with Renal Cell Carcinoma

Sera from 23 patients with renal cell carcinoma were tested for circulating immune complexes by Clq binding assay and immunosuppressive acidic protein by single radial immunodiffusion. The mean values of circulating immune complexes and immunosuppressive acidic protein in the patients were significantly higher than those of normal controls, and over-all positive rates were 52 and 35 per cent, respectively. There was a significant correlation between immunosuppressive acidic protein levels and the extent of tumor invasion. Immunosuppressive acidic protein may be a more useful marker than circulating immune complexes. However, presently synthetic evaluations of patients with various nonspecific markers, including these 2 factors, will be necessary.

Large renal hemangioma necessitating nephrectomy

An unusually large renal hemangioma with nonfunction on an excretory urogram is reported. Preoperative angiography revealed typical early draining veins in the kidney. Contrary to the previously reported cases preoperative angiography precluded renal salvage procedure. The resected kidney was nearly completely replaced with cavernous hemangioma. To the best of our knowledge this is the largest renal hemangioma on record.

Tumor-bone interaction induced by transplantable human tumors in nude mice

Tumor‐bone interactions were experimentally studied using four transplantable human urogenital tumors in nude mice. The method consisted of subcutaneously (SC) inoculating tumor cells over the calvaria in nude mice after the periosteum has been disrupted. This resulted in a local tumor causing fragmentation of the bone. The degree of tumor‐bone interaction also varied with the type of implanted tumors as shown in radiographic and histologic examinations. All tumors were associated with histologic patterns of classical bone remodeling, including bone destruction with osteoclast proliferation and reactive new bone formation. The evidence presented here suggests that the majority of tumor‐bone interaction showed a combination of both features, bone destruction and new bone formation, and the mechanisms whereby tumors interact with bone may vary with the biological properties of the tumor. Our new system would be suitable for studying the biology of local interaction between bone and tumor cells and searching out a method to protect the bone from cancer cells.

Intra-Arterial Chemotherapy for Bladder Cancer by Insertion of Catheter from Inferior Gluteal Artery

Thirty-four patients with locally advanced bladder cancer have been treated with selective intra-arterial infusion of CDDP and/or ADM (IA therapy) prior to planned surgical resection. Follow-up ranged from 25 to 108 months (median 61). Initial tumor stage was cT2 in 10 patients, cT3 in 19 and cT4a in 5. Catheterization technique: gluteal muscles were dissected gently along the muscle fiber to expose the inferior gluteal artery with the patients in prone position, then the catheter was inserted. The tip was wedged in the internal iliac artery below the bifurcation of the superior gluteal artery. ADM 10-20 mg and/or CDDP 10-20 mg were infused once or twice a week. Total dose of ADM and CDDP were 40-580 and 60-240 mg. Thirteen patients received IA therapy + hyperthermia and 8 IA therapy + irradiation. Surgical resection included total cystectomy (22 patients), partial cystectomy (3 patients) and transurethral resection of the prostate (5 patients). Survival rate at 5 years is 57.9% (T2 = 90.0, T3 = 52.1, T4 = -). Eighteen patients are alive with no evidence of recurrences, and 11 patients were free of disease for more than 5 years. Side effects were bone marrow suppression (5 patients), vomiting (4), erosion of gluteal skin (7), and neurotoxicity, such as sensory disturbance in lower extremities or ischialgia (2); treatment was well tolerated in others. In conclusion, our results suggest that intra-arterial infusion of ADM and/or CDDP by insertion of catheter from inferior gluteal artery is safe with minimal systemic side effects, and prolongs survival for invasive bladder cancer.

Fluorescence study of renal cell carcinoma with antibodies to renal tubular antigens, intermediate filaments, and lectins.

A fluorescence study was performed in 16 renal cell carcinomas using antibodies to renal tubular antigens (RTA), two intermediate filaments, cytokeratin and vimentin, and two lectins, soybean agglutinin (SBA) and peanut agglutinin (PNA). We observed the presence of RTA, cytokeratin, and vimentin in all of our specimens. The expression of vimentin, the cytoskeletal protein of mesenchymal cells, was considered to be very interesting feature of the tumor. Binding sites of SBA, normally present in glomeruli, proximal and distal tubules, were detectable in the neoplastic cells in only 37.5% of our specimens. PNA did not react with the tumor except for the small area of 2 specimens. Lectins may be useful for estimating the characteristics or renal cell carcinoma including its malignant potentials, and antibodies to RTA and intermediate filaments seem to be available for the diagnosis of the tumor in metastatic lesions.