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Biomedical subjects

Y Kawada

Publications and source records attributed to Y Kawada.

At least 181 records · Page 10Linked to original sources
PubMed1990

[Clinical analysis of renal trauma].

Since the start of the urological service in our hospital in 1986, we have experienced six male and one female patients with renal trauma. These cases were clinically analyzed and compared with hepatic trauma treated during the same period in our hospital. There were two cases of renal contusion, laceration and injury to the pedicle, and one of hemorrhage into the cyst in polycystic kidney. The causes of the trauma were mainly traffic accidents. Among them, 4 patients had injuries to other organs such as liver and brain and to the thorax. Two cases were able to retain both their kidneys, but the rest were treated with single nephrectomies. Six of the seven patients are alive. This proved that computerized tomography was very useful to decide the severity of injury, presence of lesions to other organs, and the treatment method. No close relation was observed between the time from injury to operation and the amount of blood transfusion. Moreover, hematological and biochemical analysis did not express the patient's status.

Accidents, Traffic↗
PubMed1990

[Spontaneous peripelvic extravasation: reports of two cases].

Spontaneous peripelvic extravasation must be distinguished from spontaneous rupture of the renal pelvis in urological emergency. The literatures revealed 42 cases of peripelvic extravasation and 35 cases of rupture of the renal pelvis in Japan. Most of them were caused by urolithiasis and malignant tumors. We report 2 cases of spontaneous peripelvic extravasation caused by urolithiasis, which were successfully treated conservatively.

Abdomen, Acute↗
PubMed1990

Changes of plasma catecholamine concentration in dialysis induced hypotensive patients.

Hypotension is an important clinical problem for safe dialysis. In the present study, we divided dialysis patients into two groups according to their clinical features: stable (7 cases) and unstable (7 cases). The serum catecholamine levels were measured every hour during dialysis while monitoring the blood pressure and heart rate. At each time, the plasma noradrenaline levels were found to be significantly higher in the unstable group. However, these levels declined significantly at 3, 4 and 5 hours after the commencement of dialysis, and corresponded to the fall in blood pressure. In contrast, the plasma adrenaline levels revealed no significant difference between the two groups.

Blood Pressure↗
PubMed1990

[Intra-arterial chemotherapy of relapsed and hormone-resistant prostate cancer using reservoir system].

Ten patients with relapsed and hormone-resistant prostate cancer were given intra-arterial infusion with, mainly, cisplatin using the reservoir system. The tip of the indwelling infusion catheter was inserted from the femoral artery into the internal iliac artery or common iliac artery. The opposite end of the infusion catheter was connected to a reservoir implanted subcutaneously at the thigh portion. Combination chemotherapy using methotrexate, adriamycin and cisplatin (MAC therapy) was mainly performed. According to criteria of the Jpn. Assoc. for Cancer Ther., the response rate was 23%, including 3 or PR cases. Regarding the survival rate, the 1-year survival rate was 66.7% and the 2-year rate was 33.3%. Concerning adverse reactions, nausea, vomiting and anorexia were noted in all cases. Stomatitis, leukopenia and thrombocytopenia were also found in 38%. We consider that the IA-MAC therapy is one of the most useful regimen for the treatment of the relapsed and/or hormone-resistant prostate cancer.

Aged↗
PubMed1990

Metastatic renal tumor from the lung with regional lymph node involvement: a case report.

We report a case of metastatic renal tumor from lung cancer. A 53-year-old man presented with gross hematuria 2 years after treatment of the primary lesion. Investigations suggested a metastatic tumor in the right kidney from the lung which was accompanied with regional lymph node metastasis. Surgical treatment was not performed because of his poor condition and the lymph node involvement. Therefore, the combination chemotherapy of 5-fluorouracil, vincristine and doxorubicin, OK-432 was applied. Although this conservative management was effective, he died of progression 6 months later and an autopsy confirmed the diagnosis of metastatic renal tumor.

Humans↗
PubMed1990

[A case of granulomatous orchitis in a hemodialysis patient].

A case of granulomatous orchitis in a 47-year-old patient is described. He had a history of recurrent pyelonephritis and subsequent chronic renal failure, and was under treatment with hemodialysis therapy. He presented with painful swelling of the right scrotal contents accompanied by fever. After the unsuccessful treatment with antibiotics, an exploration of the right scrotal contents revealed the testis replaced by a hard yellow mass. An orchiectomy was performed and granulomatous orchitis was diagnosed pathologically. The clinical and etiological aspects of this rare inflammatory disease of the testis are reviewed. It is important to recognize this disease, because this is often initially thought to be neoplastic. Although the cause of this disease is still controversial, it is supposed to be associated with sperm extravasation caused by urinary tract infection or trauma.

Granuloma↗
PubMed1989

Retrovesical squamous cell carcinoma associated with toxoplasmosis: diagnostic images, serum detection of SCC-antigen, and successful treatment by M-VAC regimen.

A case of retrovesical squamous cell carcinoma associated with acquired toxoplasmosis is presented. To date only six cases with retrovesical carcinoma have been reported in the literature. Although it is difficult to make a preoperative diagnosis of this rare neoplasm, transrectal longitudinal ultrasonography was diagnostically valuable, and serial measurements of serum squamous cell antigen (SCC-Ag) were useful for monitoring the clinical course.

Aged↗
PubMed1989

Antitumor activity of a new platinum complex, oxalato (trans-l-1,2-diaminocyclohexane)platinum (II): new experimental data.

Antitumor activity of a new platinum complex, oxalato (trans-l-1,2-diaminocyclohexane) platinum (II) (l-OHP), was studied. This water-soluble platinum complex showed a more prominent life-prolonging effect on a mouse leukemia L1210 than cisplatin (DDP). By an intermittent treatment schedule cured mice were observed at the optimal dose. In addition, a subline of L1210 having a 40-fold resistance to DDP (L1210/DDP) showed lack of cross-resistance to l-OHP both in vivo and in vitro. Especially in vivo l-OHP was more active against L1210/DDP than against the original L1210, and all mice were cured at doses of 6.25 and 3.12 mg/kg. l-OHP was also effective against several mouse tumors such as P388 leukemia, B16 melanoma, Lewis lung carcinoma, colon 26 and colon 38 adenocarcinomas, and M5076 fibrosarcoma, though its antitumor spectrum was somewhat different from that of DDP. The synthesis of both DNA and RNA in L1210 cells was inhibited by about 50% with exposure to 10 microM of l-OHP for 1 h, followed by postincubation in drug-free medium for 6-24 h, while only the inhibition of DNA synthesis was observed by DDP in the same experiment. If severe toxicity is not observed in preclinical study, l-OHP expected to be a new clinically active Pt complex.

Animals↗
PubMed1989

The development and reversal of tolerance to antianginal effect of isosorbide dinitrate in patients with effort angina.

The development and reversal of tolerance to the hemodynamic and anti-anginal effects of isosorbide dinitrate in a sustained release form (ISDN-SR) were investigated in 11 male patients (mean age 58.9 y.o.) with stable effort angina. Treadmill exercise test, evaluation of hemodynamic parameters and measurement of plasma ISDN concentrations were performed during the control period, on the 1st, 7th and 14th days of therapy with 40 mg of ISDN-SR orally every 8 h and, subsequently, on the day when ISDN-SR was re-administered after a 72 h placebo period (17th day). Initially, exercise tolerance time (ETT) was prolonged significantly (p less than 0.001) by ISDN-SR from 257 +/- 50 sec in the control period to 434 +/- 55 sec on day 1. This prolongation was significantly reduced with sustained therapy and ETT was shortened to 332 +/- 69 sec on the 7th day (p less than 0.01 vs day 1) and 326 +/- 73 sec on the 14th day (p less than 0.01 vs day 1). The effects of ISDN-SR initially observed were restored after a 72 h placebo period and ETT was prolonged to 432 +/- 57 sec on the 17th day. The resting heart rate was increased significantly (p less than 0.01 vs control) and systolic blood pressure was decreased (p less than 0.001 vs control) by ISDN-SR on day 1. These changes were also diminished significantly (p less than 0.01 vs day 1) with sustained therapy and were restored after a 72 h nitrate-free interval.(ABSTRACT TRUNCATED AT 250 WORDS)

Administration, Oral↗
PubMed1989

Mechanical adaptation of heart rate change for coronary circulation in patients with and without ventricular hypertrophy.

To clarify the mechanical adaptation and interference of coronary vessels, we studied hemodynamics of coronary circulation in control and 4 different pacing rates (80, 100, 120, 150/min) in 5 patients with angina pectoris (AP) and in 5 patients with hypertrophic cardiomyopathy (HCM). Coronary sinus flow (CSF) was measured by a Webster's thermodilution catheter, and we applied ascorbic acid-platinum reaction for the mean transit time measurement in left coronary flow (t0-t2). Coronary vascular bed (CVB) was obtained by multiplying CSF and t0-t2. CSF in AP gradually increased from 104 +/- 21 ml/min at 72/min to 148 +/- 42 ml/min at 120/min, while CSF in HCM changed slightly from 91 +/- 25 ml/min at 64/min to 94 ml/min at 120/min. Average t0-t2 in HCM was 6.0 +/- 1.6 sec in control which was significantly lower than that in AP (7.8 +/- 0.7 sec). Calculated CVB in AP increased at any given heart rate up to 120/min (13.5 +/- 2.4, 15.8 +/- 1.7, 15.0 +/- 4.7, 15.1 +/- 4.3 ml), but CVB in HCM decreased from 9.1 +/- 2.3 ml at 64/min to 8.1 +/- 1.7 ml at 120/min. These data suggest that myocardial compression and suction at different heart rates and with different cardiac muscle structures play an important role for beat to beat adjustment of coronary circulation in cardiac cycle.

Adaptation, Physiological↗
PubMed1989

[Correlation of serum gamma-seminoprotein and serum prostate-specific antigen in patients with prostate cancer].

Enzyme immunoassays (EIAs) using rabbit anti-gamma-seminoprotein (gamma-Sm) antibody and rabbit anti-prostate-specific antigen antibody (PA) for measurements of gamma-Sm and PA were developed in order to determine the correlation between serum gamma-Sm levels and serum PA levels in patients with prostate cancer. Each EIA for measurement of gamma-Sm or PA was revealed to be sensitive and reproducible by fundamental analysis of the quality of EIAs. A significant correlation was established between serum gamma-Sm levels and serum PA levels which were measured by these assays and expressed as protein concentration of seminal plasma (r = 0.99). This result coincided with our previous observation that gamma-Sm and PA are immunologically identical materials. We conclude, therefore, that gamma-Sm and PA should be regarded as tumor markers identical to each other for serodiagnosis of prostate cancer.

Antigens, Neoplasm↗
PubMed1989

[Analysis of antigens recognized by anti-gamma-seminoprotein antibody and anti-prostate-specific antigen antibody by means of Ouchterlony method and western blotting method].

Antigens recognized by anti-gamma-seminoprotein (gamma-Sm) antibody and anti-prostate-specific antigen (PA) antibody were analyzed immunologically by Ouchterlony method and Western blotting method. The double immunodiffusion test demonstrated that anti-gamma-Sm antibody and anti-PA antibody reacted against an identical antigen in seminal fluid or prostate homogenate. In the immunoblotting examination, anti-gamma-Sm antibody and anti-PA antibody formed a single and identical band, which gave a molecular weight of 33,000, in seminal fluid and prostate homogenate. This study demonstrated that anti-gamma-Sm antibody and anti-PA antibody recognized a single and identical antigen in seminal fluid and prostate homogenate and suggested that an identical material could be measured in sera of patients with prostate cancer by immunoassay systems using anti-gamma-Sm antibody and anti-PA antibody.

Antigens, Neoplasm↗
PubMed1989

[Treatment of suture-thread stones in the kidney by percutaneous nephrolithotripsy. Report of a case].

Percutaneous nephrolithotripsy was performed successfully to the stones in the left kidney, in which pyelolithotomy had been done three years earlier. There were foreign body stones with silk sutures used in the previous surgery as the nuclei. All the stones were removed, and a stricture in the renal pelvis was liberated endoscopically. No reports of endoscopic management to foreign body stones in a kidney are found in the Japanese literature. A few ways of the treatment are discussed.

Adult↗
PubMed1989

[Acute focal bacterial nephritis (acute lobar nephronia) report of two cases].

Acute focal bacterial nephritis (AFBN) is one of the acute renal infections, its entity can be distinguished from other renal infections by the findings of sonography and computed tomography. There is no evidence of liquefaction in focal masses of AFBN in contrast to renal abscess. We present two cases with AFBN. The first case was a 52-year-old man with diabetes mellitus and benign prostatic hypertrophy. The second case was a 24-year-old woman with bilateral vesico-ureteral refluxes. Although their initial symptoms mimicked those of acute pyelonephritis, the findings of sonography and computed tomography revealed renal masses. They were treated with anti-microbial agents, and showed rapid improvement on both clinical symptoms and renal masses.

Acute Disease↗
PubMed1989

[A case of retroperitoneal bulky tumor with cryptorchidism].

A 37-year-old male was presented with an upper abdominal mass. A retroperitoneal bulky tumor was detected and operative biopsy revealed seminoma. The right testis was undescended and atrophic which was located at the left inguinal lesion. Pathologically, the primary tumor cells were not found in the left orchiectomied testis, but only scar and fibrosis were compatible with a burned-out testicular tumor. This patient showed partial regression by multidisciplinary therapy including combined chemotherapy with CDDP, etoposide and peplomycin, and is still on the same condition and alive for 3 years. In case of extragonadal germ cell tumor without apparent testicular involvement, it is a problem to differentiate primary extragonadal germ cell tumor from occult and burned-out testicular tumor. Testis should be examined by all means available including careful exploration.

Adult↗
PubMed1989

[A case of advanced bladder cancer successfully treated with intraarterial chemotherapy].

A 79-year-old Japanese male came to our hospital with complaints of protraction and macroscopic total hematuria. The medical imaging methods revealed a large papillary tumor in the left lateral wall of the bladder with the staging of T3N0M0. The pathological diagnosis was transitional cell carcinoma, G3. He received intraarterial chemotherapy with CDDP, ADM and MTX, which was called IA-MAC regimen. After two IA-MAC, no medical imaging method could reveal the tumor. The biopsied specimen, which was taken using the transurethral resection of the bladder mucosa, demonstrated no malignant cells. The new chemotherapeutic regimen "IA-MAC" is useful for the treatment of localized advanced bladder cancer in clinical use and enables one to preserve the organ.

Aged↗
PubMed1989

[Successful treatment of an infant with fulminant hepatitis by factor VII concentrate].

A 2-month-old boy was admitted to our hospital because of poor sucking and jaundice. There were no abnormalities during the whole period of pregnancy and at birth. His mother was a HBeAb positive HBsAg carrier, but prophylactic maneuver such as anti-HB immunoglobulin and HB vaccine was not performed on him at birth. Physical examination on admission revealed mild disturbance of consciousness. The laboratory findings showed marked increments of serum bilirubin, GOT, GPT, and NH3, and prolongation of prothrombin time, activated partial thromboplastin time and hepaplastin test. Thus, he was diagnosed as fulminant hepatitis and treated with exchange transfusion once or twice a day. Biochemical data improved gradually, but hypocoagulable states remained unchanged. At that time we decided to use Factor VII concentrate, because we found that, among several coagulation factors, factor VII activity decreased most rapidly after exchange transfusion. The alternate therapy of exchange transfusion and Factor VII concentrate improved his coagulation abnormality without any side effects. Our experience suggests that the combination therapy of exchange transfusion and Factor VII concentrate may be useful for management of fulminant hepatitis, particularly for uncontrollable coagulopathy.

Acute Disease↗