pituitrin and Prostatic-Neoplasms

The syndrome of inappropriate secretion of antidiuretic hormone (ADH) was recognized in a 68-year-old man with a poorly differentiated metastatic adenocarcinoma of the prostate. Elevated levels of ADH were found in the tissues of the primary tumor and lymph node metastasis. The patient's clinical course is detailed and the pathophysiology of this syndrome is discussed. To our knowledge, this case is the ninth reported case of syndrome of inappropriate secretion of ADH with adenocarcinoma of the prostate. Antidiuretic hormone activity was proven in only three cases including this case.

Topics: Adenocarcinoma; Aged; Diagnosis, Differential; Diethylstilbestrol; Humans; Inappropriate ADH Syndrome; Lymphatic Metastasis; Male; Prostate-Specific Antigen; Prostatic Neoplasms; Sodium; Vasopressins

An 88-year-old patient with a poorly differentiated adenocarcinoma of the prostate gland was found to have all cardinal findings of syndrome of inappropriate antidiuretic hormone secretion (SIADH). Elevated levels of antidiuretic hormone were found in the patient's serum and in the prostatic tumor and the cytoplasms of the tumor was positive for prostate specific antigen and was faintly positive for antidiuretic hormone (ADH). He responded well to combination therapy of androgen blockade with leuprorelin acetate and flutamide, and laboratory findings of SIADH and serum ADH level returned to normal. However, he died of sudden profuse bleeding caused by gastric ulcers 6 months after the therapy. Ten cases of SIADH caused by prostatic cancer have been reported including the present case.

Topics: Adenocarcinoma; Aged; Androgen Antagonists; Antineoplastic Agents, Hormonal; Flutamide; Humans; Inappropriate ADH Syndrome; Leuprolide; Male; Paraneoplastic Endocrine Syndromes; Prostatic Neoplasms; Treatment Outcome; Vasopressins

Topics: Aged; Diuresis; Drainage; Humans; Infant; Kidney; Male; Middle Aged; Natriuresis; Polyuria; Postoperative Complications; Prostatic Hyperplasia; Prostatic Neoplasms; Ureteral Calculi; Ureteral Obstruction; Urinary Bladder Neck Obstruction; Urologic Diseases; Vasopressins; Water-Electrolyte Balance

Expression of genes that encode oxytocin (OXT) and vasopressin (AVP) and their cognate receptors in normal and diseased prostates are only partially characterized. Reverse transcription and PCR were used to examine the expression of these genes in normal prostate epithelial and stromal cell lines, k-ras-transformed prostate epithelial cell lines, and in four prostate cancer cell lines. Secreted and cell-associated OXT peptide was measured by an enzyme immunoassay. OXT and its receptor (OXTR) were expressed in all eight prostate cell lines. Cell-associated OXT peptide was also found in all prostate epithelial cell lines except in DU145 cells. Neither AVP nor its cognate receptors (V1a receptor and V2 receptor) were expressed in any prostate cell line examined. These data point to the OXTR as the primary target of OXT and AVP, and suggest that OXT might be an autocrine/paracrine regulator in human prostate. We found that OXT induces the migration of PC3 and PC3M, but not DU145 prostate cancer cells. The effect of OXT is distinct from the epidermal growth factor (EGF)-induced migration of prostate cancer cells, in which ERK1/2 and EGF receptor kinase activities were required. When cells were pretreated with pertussis toxin, the effect of OXT, but not EGF, on cell migration was abolished. Pretreatment with the cyclic AMP analogue, 8-Br-cAMP, did not affect OXT-induced cell migration, which eliminated the nonspecific effect of pertussis toxin. We conclude that a Gi-dependent mechanism is involved in OXTR-mediated migration of prostate cancer cells, and indicates a role for OXTR in prostate cancer metastasis.

Topics: Blotting, Western; Cell Adhesion; Cell Movement; Cell Proliferation; Cells, Cultured; ErbB Receptors; GTP-Binding Protein alpha Subunits, Gi-Go; Humans; Male; Oxytocics; Oxytocin; Peptide Fragments; Pertussis Toxin; Prostatic Neoplasms; Receptors, Oxytocin; Reverse Transcriptase Polymerase Chain Reaction; RNA, Messenger; Signal Transduction; Stromal Cells; Vasoconstrictor Agents; Vasopressins

An autopsy case of primary small cell carcinoma (SCC) of the prostate in a 68-year-old man is reported. The patient was admitted to hospital because of a bloody stool and suspected rectal cancer. However, a diagnosis of prostate cancer was made on the basis of a digital rectal examination, the serum level of prostate-specific antigen, and a needle biopsy of the prostate. The patient also experienced a syndrome of inappropriate secretion of antidiuretic hormone. He died 29 days after admission. At autopsy, the tumor had invaded the rectum, bladder and pelvic peritoneum. Metastases to the heart, vertebrae and lymph nodes were observed. Microscopically, the tumor was composed of small round cells that showed a solid growth pattern. Rosette formations were observed. Immunohistochemically, the tumor cells were positive for a prostatic epithelial marker and neuroendocrine markers. A high level of antidiuretic hormone was detected in the tumor tissue. To our knowledge, this is the first reported case of SCC of the prostate in which both a prostatic epithelial marker and neuroendocrine markers have been found in the same tumor. This finding supports the hypothesis that SCC of the prostate originates from a multipotential stem cell of the prostatic epithelium.

Topics: Aged; Biomarkers, Tumor; Carcinoma, Small Cell; Fatal Outcome; Humans; Immunohistochemistry; Inappropriate ADH Syndrome; Male; Neuroendocrine Tumors; Prostate-Specific Antigen; Prostatic Neoplasms; Vasopressins

3 cases of inappropriate vasopressin secretion during one case of anaplastic carcinoma of the lung, one case of carcinoma of the prostate with bony metastases and one case of acute intermittent porphyria are presented. The plasma levels of vasopressin, measured by radioimmunoassay were high. Treatment with demeclocycline was attempted in one case. The clearance of free water was positive but the treatment was poorly tolerated by the digestive tract.

Topics: Acute Disease; Aged; Carcinoma; Demeclocycline; Female; Humans; Lung Neoplasms; Male; Paraneoplastic Endocrine Syndromes; Porphyrias; Prostatic Neoplasms; Syndrome; Vasopressins; Water-Electrolyte Imbalance

The development of a sensitive and specific radioimmunoassay for vasopressin is described. Antibodies were successfully produced following the coupling of synthetic arginine vasopressin with bovine serum albumin carried out with carbodiimide. In order to standardize the assay, the labelled hormone has to be separated twice using a DEAE-Sephadex-A-25 column and thin layer chromatography with cellulose plates. A further condition to obtain a reproducible standard curve is the use of a pure arginine vasopressin checked by cellulose chromatography. Most of the vasopressin batches available do not fulfil this requirement of purity. With the method described, vasopressin can be determined in unextracted human urine. The lower limit of detection is 2 pg/ml. Normal values are in the range of 67.5 +/- 34.3 ng/24 h (kappa +/- SD, n =45). No significant difference of AVP excretion was found between men and women. The usefulness of the assay is demonstrated in patients with hypothalamic or pituitary disorders.

Topics: Acromegaly; Adolescent; Adult; Aged; Arginine Vasopressin; Breast Neoplasms; Child; Chromatography, Thin Layer; Cushing Syndrome; Diabetes Insipidus; Female; Humans; Immune Sera; Immunodiffusion; Lypressin; Male; Middle Aged; Prostatic Neoplasms; Radioimmunoassay; Vasopressins

The syndrome of inappropriate secretion of antidiuretic hormone was recognized in a sixty-year-old man with a poorly differentiated metastatic adenocarcinoma of the prostate gland. Elevated levels of antidiuretic hormone were found in the patient's serum and in the prostatic tumor but not in the cerebrospinal fluid. The patient's clinical course is detailed, and the pathophysiology of this syndrome is discussed.

Topics: Adenocarcinoma; Humans; Male; Middle Aged; Neoplasm Metastasis; Paraneoplastic Endocrine Syndromes; Prostate; Prostatic Neoplasms; Vasopressins

Topics: Aged; Creatinine; Desoxycorticosterone; Diuresis; Edema; Heart Failure; Humans; Hypertension; Infusions, Parenteral; Male; Middle Aged; Osmolar Concentration; Prostatic Hyperplasia; Prostatic Neoplasms; Prostatitis; Sodium; Time Factors; Urea; Urinary Catheterization; Urination Disorders; Vasopressins; Water-Electrolyte Balance

Topics: Acne Vulgaris; Adrenal Cortex Hormones; Adrenalectomy; Androgens; Androstanols; Breast Neoplasms; Estrogens; Female; Hirsutism; Hormones; Humans; Hypercalcemia; Hypertension; Hypophysectomy; Male; Nandrolone; Norethindrone; Ovarian Neoplasms; Progesterone; Prostatic Neoplasms; Thyroid Hormones; Thyroid Neoplasms; Urogenital Neoplasms; Uterine Neoplasms; Vasopressins

Topics: Adenocarcinoma; Blood Volume; Humans; Hyponatremia; Liver; Male; Middle Aged; Neoplasm Metastasis; Osmolar Concentration; Prostatic Neoplasms; Sodium; Vasopressins

Topics: Aged; Aldosterone; Ammonium Chloride; Blood Urea Nitrogen; Diuresis; Humans; Male; Prostatic Neoplasms; Ureteral Obstruction; Vasopressins

Topics: Acromegaly; Adult; Aged; Breast Neoplasms; Cushing Syndrome; Diabetes Insipidus; Diabetic Retinopathy; Female; Humans; Male; Middle Aged; Pituitary Gland; Polyuria; Prostatic Neoplasms; Ultrasonic Therapy; Vasopressins

Topics: Chlorides; Desoxycorticosterone; Drug Therapy; Glycosuria; Humans; Hydrocortisone; Kidney Function Tests; Male; Natriuresis; Polyuria; Prostatic Neoplasms; Urethral Stricture; Urine; Vasopressins