Chihiro Takamura

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BACKGROUND The effects of female sex hormones on urinary stone formation are not known. This study was conducted to investigate the effects of these hormones on stone formation by using an ethylene glycol (EG) and vitamin D-induced rat urolithiasis model. METHODS Adult female Wistar rats were fed the same diet for four weeks and were then divided into(More)
Pathogenesis of urolithiasis cannot be explained only by metabolic disorder. In the present study, morphologic differences of the renal pelvic-caliceal system (PCS) were examined on both the stone and normal sides in calcium-containing stone formers. The results indicated that as compared to the normal side, the urine flow in the PCS was stagnant or not(More)
The calciuric response and the changes of plasma glucose and insulin produced by a 75-gram oral glucose tolerance test were determined in 27 male patients with idiopathic calcium renal stones (6 with dietary hypercalciuria, 5 with nondietary hypercalciuria and 16 with normocalciuria) and 22 healthy male subjects. The subjects were classified as obese (> or(More)
BACKGROUND The indications and suitable operative time of parathyroidectomy for secondary hyperparathyroidism were discussed. METHODS From October 1978 to September 1994 parathyroidectomy was performed for 71 patients who had bone and/or joint pain due to secondary hyperparathyroidism. There were 37 men and 34 women (mean age 48.4 years). The duration of(More)
A case of right ureteral stricture due to endometriosis in the pouch of Douglas was presented. A 46-year-old housewife was referred to our clinic with asymptomatic macroscopic hematuria on August 22, 1985. Intravenous pyelography (IVP) and abdominal computed tomographic scanning revealed right hydronephrosis and retrograde pyelography showed that ureteral(More)
We evaluated 32 patients with urinary calculi under 16 years of age over the past 14 years since the founding of the Department of Urology, Kinki University School of Medicine. They comprised 0.8% of the total urolithiasis patients. They consisted of 18 boys and 14 girls with a male-to-female ratio of 1.29. The average age was 8.7 years for boys and 10.4(More)
The family history between patients with upper urinary tract stones and healthy subjects was compared to evaluate the possible involvement of genetic factors in obtaining information through a questionnaire. The patients showed a significantly more marked history than the healthy subjects (p < 0.001). In particular, recurrent stone formers showed a(More)
Because human urine contains various substances which can affect each other, it is quite difficult to clarify the mechanism of formation of calcium oxalate (CaOx) crystal in urine. The authors recently determined CaOx crystalline content and the concentrations of other substances in urine specimens from patients with urolithiasis and healthy volunteers, and(More)
With respect to prostatectomies carried out in clinic since the opening of the Kinki University Hospital in 1975, incontinence after prostatectomy was investigated with 470 patients as subjects for whom a follow-up study after the operation was possible. Also, the usefulness of the urodynamic tests for diagnosing underlying diseases was investigated. 1)(More)
A patient with testicular cancer (non-seminoma, stage IIB) who had undergone resection for primary disease and retroperitoneal lymph node dissection as well as chemotherapy and radiotherapy 6 years before developed iatrogenic retrograde ejaculation. The infertility was treated by oral medications, including herbal medicine and injections of a hormone(More)