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Biomedical subjects

H Tajiri

Publications and source records attributed to H Tajiri.

At least 127 records · Page 7Linked to original sources
PubMed1988

[Continuous infusion of anti-cancer drug with balloon infusors].

We evaluated the safety and stability of balloon infusors in which the distended elastomotor balloon acts as the energy source. Continuous intravenous administration of 5-fluorouracil with the infusor was carried out in nine patients with advanced gastrointestinal cancers. In additional two patients, morphine hydrochloride was administered continuously in the vein or in the epidural space. The patients were carefully observed and hematological and biochemical examinations were performed. Infusion volume was calculated by measuring the weight of the infusor. The present study showed that this infusor was safe and easy to handle. However, the infusion velocity was slightly unstable, being influenced by the temperature of the infusor. This infusor was used even on an ambulatory basis. According to our results, we thought this infusor is quite useful to improve the quality of life of cancer patients.

Aged↗
PubMed1988

Local hyperthermia using a low powered Nd: YAG laser for pancreatic and gastric carcinoma.

The use of local interstitial hyperthermia using a low powered Nd: YAG laser (known as laserthermia) has been studied both in vivo and in vitro on two gastrointestinal carcinomas. Human pancreatic carcinoma subcutaneously transplanted into nude mice (n = 28) was treated using an interstitially placed frosted sapphire probe with a Nd: YAG laser at 3 watts maintaining a temperature increase of 42 degrees C - 43 degrees C for up to 20 minutes. Seven days after treatment, a marked necrosis of the pancreatic tumor was found resembling an ischemic infarction. The potential cytocidal effect of heat and low powered Nd: YAG laser energy was also tested in vitro using three different kinds of human gastric and pancreatic cancer cells. The cytocidal effect of heat was potentiated by the photolytic effect of the low powered Nd: YAG laser energy.

Adenocarcinoma↗
PubMed1988

[Indications and problems of endoscopic treatment for gastrointestinal tract cancers, with special reference to early gastric cancer].

We carried out a clinicopathologic and endoscopic investigation of the relationship between the presence/absence of lymph node or distant metastasis and several crucial factors using resected specimens of early gastric cancer, and concluded that endoscopic treatment was indicated for four types of early gastric cancer: 1) type IIa less than 2 cm in size, 2) focal cancer, 3) so called "gastritis-like" early cancer less than 2 cm in size and 4) polypoid type with mucosal involvement. Up to now, cases of early gastric cancer have been treated by polypectomy, strip biopsy and laser endoscopy. Residual cancer cells were found in 10 out of 20 resected cases. In 2 out of 54 cases followed up for more than one year without any surgical treatment, cancer cells were discovered by biopsy. The effectiveness rate was estimated to be 84% (62/74). Endoscopic treatment was able to provide high efficiency for early gastric cancer of the above types. Causes of ineffectiveness were a lesion more than 2 cm in size, vertical invasion of the lesion into the submucosa and the location of a lesion in a difficult area such as the prepylorus or the cardia.

Aged↗
PubMed1988

Imaging diagnosis of von Hippel-Lindau disease: a case report.

A patient with typical manifestations of von Hippel-Lindau disease is presented. In this 44 year-old man, cerebellar hemangioblastoma was found initially and he was operated upon at the age of 25. This was followed by retinal angiomas treated by cryocoagulation and, recently, by paresthesia of both legs and frequent shooting pains over the lower abdomen. A computed tomography disclosed multiple small cysts of the pancreas, bilateral multicentric renal carcinomas and a spinal angioma in the lumbar portion, confirmed by magnetic resonance imaging, and consistent with neurogenic manifestations. Multiple enucleations of the renal cell carcinomas were carried out, most of which were histologically well differentiated adenocarcinomas. There was no family cluster. Six months postoperative, the patient is doing well.

Adult↗
PubMed1987

Photoradiation therapy in early gastrointestinal cancer.

Endoscopic photodynamic therapy has been used in the treatment of 19 cases of upper gastrointestinal cancer of which six were superficial esophageal and 13 were early gastric cancer. Six patients subsequently underwent surgical resection. Residual tumors were found in the resected specimens of one esophageal carcinoma and in the two early gastric carcinomas. Technical problems resulted in one failure. Follow-up ranged from 4 months to 3 years and 11 months with no tumor recurrence in either the operated or unoperated patients. Other delivery systems are currently under investigation.

Adult↗
PubMed1987

Efficacy of a multiple insulin injection regimen in teenagers with insulin-dependent diabetes. Carbohydrate and lipid oxidation measured by continuous indirect calorimetry.

Our study of insulin-dependent diabetic teenagers proved that a multiple insulin injection regimen (MIR) can be an acceptable and effective method of glycemic control. Further, the artificial beta cell can be used to determine insulin requirements for MIR. And finally, continuous indirect calorimetry can be used to assess metabolic control in diabetes.

Adolescent↗
PubMed1987

[Serial changes in serum CA 19-9 levels in pancreatic cancer].

Levels of a new carbohydrate antigen CA 19-9, which is a monosialoganglioside identified by a monoclonal antibody, were measured in 41 patients with pancreatic cancer and these serial changes were investigated. To provide a contrast, the serum CEA levels were compared with the serum CA 19-9 levels. As the result of this study, it was found that the serial changes of the serum levels of CA 19-9 were more correlative to the clinical course of these patients with pancreatic cancer than those of the serum CEA levels.

Adult↗
PubMed1987

A case of pancreatic cancer with liver metastasis which responded to chemotherapy.

A case of pancreatic cancer with liver metastasis is reported, in which chemotherapy had a marked effect, with the responses clearly documented. The patient was a 59-year-old male who experienced epigastric pain in February 1985, upper gastrointestinal X-ray examination revealing extragastric compression by the pancreas. He visited the National Cancer Center Hospital, Tokyo, in April 1985 and the diagnosis of pancreatic cancer with liver metastasis was made using the imaging procedures of ultrasonography, computed tomograph scanning and endoscopic retrograde cholangiopancreatography as well as by biochemical and serological tests. At the time a 5 cm tumor was palpable in the middle upper abdomen. The patient was treated with Cis-diaminedichloro platinum, tegafur, and 5-fluorouracil, successively, and the abdominal tumor gradually diminished, finally becoming impalpable. The response was evaluated as one of partial responses (PR) by ultrasonography, and the improvement substantiated by computed tomography and tumor markers.

Cisplatin↗
PubMed1987

[Cis-diamminedichloroplatinum(II) chemotherapy in advanced pancreatic carcinoma].

The effect of cis-diamminedichloro platinum (II) (CDDP) was evaluated in 14 patients with advanced pancreatic carcinoma. Prior chemotherapy was done in 7 cases and the remaining 7 were fresh cases. The drug was given at a dose of 80 mg/m2 I.V. every 3 weeks, with hydration and mannitol diuresis. Four cases out of 14 showed no change, while the remaining 10 cases showed progressive disease. The response rate was 0%. Most of the patients who showed myelosuppression had received prior chemotherapy. Non-hematologic toxicity occurred in 9 patients (64%) and consisted of nausea in 9, vomiting in 7 and anorexia in 9. Values of serum creatinine and BUN were transiently elevated.

Adenocarcinoma↗
PubMed1987

Laserthermia: a computer-controlled contact Nd:YAG system for interstitial local hyperthermia.

Contact Nd:YAG laser surgery is assuming a role of greater importance in endoscopic and open surgery, allowing coagulation, cutting, and vaporization with greater precision and safety. A synthetic sapphire probe allows a wider angle of irradiation and diffusion of low power laser energy (less than 5 W) using an interstitial technique for producing local hyperthermia. Sensors placed directly into surrounding tissue or tumor continuously monitor temperature, and a pertinent computer program produces a controlled and stable temperature (e.g., 42 degrees C) over a period of time (e.g., 20-40 min). The Laserthermia system (Surgical Laser Technologies, Inc., Malvern, PA), using the Nd:YAG laser, offers many advantages in the experimental and clinical treatment of carcinoma by local interstitial hyperthermia.

Body Temperature↗
PubMed1986

Small intestinal mucosal hyperplasia caused by an enterokinase inhibitor from red kidney bean in rats.

A specific enterokinase inhibitor (EKI) was purified from red kidney bean (RKB). Male weanling rats fed a diet containing this purified EKI (0.06%) for 6 d showed increases in mucosal weights, protein, DNA and lactic dehydrogenase contents in their small intestines compared to age-matched control rats fed a standard diet. Total mucosal EK and disaccharidase activities were, however, decreased in EKI-fed rats. Thus, oral consumption of EKI from RKB led to small intestinal mucosal hyperplasia in rats. The mucosal hyperplasia observed in EKI-fed rats is not likely due to decreased turnover of mucosal proteins as a result of reduced luminal proteases since luminal contents of trypsin, chymotrypsin and elastase in EKI-fed rats were similar to those of control rats. Enterokinase inhibitor may have a direct hyperplastic effect on the small intestine of rats.

Administration, Oral↗
PubMed1986

Pancreaticobiliary factors in the modulation of small intestinal enterokinase in the rat.

Chronic pancreaticobiliary diversion was employed to study the modulation of enterokinase in the small intestine of adult rats. Diversion resulted in apparent trophic changes of the proximal bypassed portion of the intestinal mucosa. An almost complete loss of mucosal enterokinase activity in the proximal duodenum but no increase of enterokinase in the segments distal to reentry of the common duct was found in the pancreaticobiliary-diverted rats. The effect on the enterokinase activity in the proximal segment was specific in that no other brush-border enzymes measured in that segment were decreased. The decrease in enterokinase was partially prevented by dietary supplementation with pancreatic trypsinogen and completely avoided with the addition of a combination of bile acids and trypsinogen. Supplementation with bile acid alone did not preserve the enterokinase levels in the bypassed rats. The results suggested that trypsinogen is the primary factor responsible for modulating enterokinase levels in the proximal small intestine, with bile acids acting as a modifier.

Animals↗
PubMed1986

A case report of synchronous small cell lung cancer and gastric cancer successfully treated with carboplatin.

A 53-year-old man complained of anorexia and abdominal distention of one month's duration. The chest X-ray demonstrated a mass in the left lung with hilar and mediastinal adenopathy and a lytic lesion in the right fourth rib. A transbronchoscopic biopsy of the mass revealed oat cell carcinoma (WHO classification). The endoscopic evaluation also revealed a gastric lesion (IIc type). Biopsy of this lesion indicated signet ring cell gastric cancer. An abdominal CT scan demonstrated multiple liver metastases. Based on these findings, the patient was diagnosed as having synchronous lung and gastric primaries, with liver and bone metastasis from lung cancer. Carboplatin (CBDCA) was administered by intravenous drip infusion of 450 mg/m2. After a second treatment with CBDCA about 3 weeks later, the patient achieved a partial response at the primary site of lung cancer as well as at the liver and bone metastases. In addition, repeat endoscopy of the stomach demonstrated a complete regression. A biopsy specimen taken by gastroscopy was negative for cancer cells. Subsequent chemotherapy for small cell lung cancer was administered with cyclophosphamide, adriamycin, and vincristine, and to date there is no evidence of recurrence. Further studies on CBDCA treatment of small cell lung cancer and gastric cancer are needed to establish the efficacy of this drug against these two histologically different cancers.

Adenocarcinoma, Mucinous↗