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51.
S Minoshima T Shiina I Yamagami Y Kitakata K Isobe K Uno Y Anzai J Okada Y Uchida J Itami 《Kaku igaku. The Japanese journal of nuclear medicine》1990,27(7):749-756
SPECT with N-isopropyl-p-[I-123]iodoamphetamine were performed in a 81-year-old man with cerebral infarction. In the subacute phase, the radioactivity was increased in the infarct area where fogging effect and remarkable contrast enhancement was demonstrated in X-ray CT. The contralateral cerebellar hemisphere showed reduced activity due to crossed cerebellar diaschisis (CCD). In the chronic phase, the decrement of the activity in the infarct was observed. Increased activity in the subacute phase was thought to reflect the hyperemia in the infarct, while CCD suggested the decreased metabolic activity in the lesion. The coexistence of the hyperemia and the CCD indicates flow and metabolic uncoupling, which means "luxury perfusion". This case was also thought to demonstrate atypical findings of CCD in SPECT imaging. 相似文献
52.
Junichi Okada Hiroshi Oonishi Kyosan Yoshikawa Keiko Imaseki Kimiichi Uno Jun Itami Noboru Arimizu 《Annals of nuclear medicine》1994,8(2):109-113
To evaluate positron emission tomography with18F-fluorodeoxy glucose (FDG-PET) as an diagnostic tool to determine tumor viability after anticancer therapy, fourteen patients were examined by FDG-PET after the end of the treatment. The lesions with residual viable tumor cells showed higher uptake of FDG than surrounding normal soft tissue. The lesions, in which tumor viability was lost or very low, showed higher uptake of FDG in four cases and similar uptake to normal soft tissue in three cases. The residual increased uptake of FDG was considered to be caused by remaining tumor cells and/or inflammatory reaction to anticancer treatment. FDG-PET after anticancer treatment should be interpreted by considering the reaction due to the treatment and the partial volume artifact of PET caused by the limited spatial resolution. 相似文献
53.
Junichi Okada Hiroshi Oonishi Kyosan Yoshikawa Jun Itami Kimiichi Uno Keiko Imaseki Noboru Arimizu 《Annals of nuclear medicine》1994,8(3):187-191
To evaluate the usefulness of FDG-PET as a predictor of prognosis, 34 patients with untreated malignant lymphoma in the head and neck region were studied. After FDG-PET and treatment, they were observed from 15 to 50 months. Tumors which were aggressive and resistant to treatment tended to show high uptake of FDG. The survival rate of patients with high uptake of FDG, DAR > 8, was lower than the rate of the other patients. It is considered to be useful to add FDG uptake of the tumor to other prognostic factors for predicting the prognosis. 相似文献
54.
55.
We report herein an unusual case of primary malignant fibrous histiocytoma (MFH) of the ascending colon. A 47-year-old man
was admitted to our hospital for further investigations following the discovery of a mass in the right lower quadrant of the
abdomen during a medical checkup. Abdominal ultrasonography (US) and computed tomography (CT) demonstrated a mass extending
to the right lateral side from the ascending colon. At laparotomy, a tumor was found originating in the ascending colon and
infiltrating the right lateral peritoneum. A right hemicolectomy and partial peritoneal dissection were performed followed
by an ileotransverse colostomy reconstruction. The resected specimen contained a tumor measuring 7×5×4 cm, the cut surface
of which was yellowish white, and the mucosa of the colon was intact. Based on histological and immunohistochemical inspection,
the tumor was diagnosed as MFH of the ascending colon. We reviewed the total 18 known cases of colorectal MFH documented in
the literature including our case. After surgery, 4 of 17 patients died of local recurrence, all within 42 months, indicating
that early and complete excision of tumor is essential to achieve cure. 相似文献
56.
57.
Liver Targeting of Interferon Through Pullulan Conjugation 总被引:1,自引:0,他引:1
Xi Keli Tabata Yasuhiko Uno Kazuko Yoshimoto Miwa Kishida Tsunataro Sokawa Yoshihiro Ikada Yoshito 《Pharmaceutical research》1996,13(12):1846-1850
Purpose. The purpose of this study was to actively target interferon (IFN) to the liver through its chemical conjugation with pullulan, a water-soluble polysaccharide with a high affinity for the liver.
Methods. Chemical conjugation of IFN with pullulan was achieved by a cyanuric chloride method. Following intravenous injection of the conjugates to mice, their body distribution and the activity of an IFN-induced enzyme, 2,5-oligoadenylate (2-5A) synthetase in the liver and other organs, were evaluated.
Results. The cyanuric chloride method enabled us to prepare an IFN-pullulan conjugate that retained approximately 7–9 % of the biological activity of IFN. Pullulan conjugation enhanced the liver accumulation of IFN and the retention period with the results being reproducible. When injected intravenously to mice, the IFN-pullulan conjugate enhanced the activity of 2-5A synthetase in the liver. The activity could be induced at IFN doses much lower than those of free IFN injection. In addition, the liver 2-5A synthetase induced by conjugate injection was retained for 3 days, whereas it was lost within the first day for the free IFN-injected mice.
Conclusions. IFN-pullulan conjugation was promising for IFN targeting to the liver with efficient exertion of its antiviral activity therein. 相似文献
58.
Application of Akaike's information criterion (AIC) in the evaluation of linear pharmacokinetic equations 总被引:13,自引:0,他引:13
Kiyoshi Yamaoka Terumichi Nakagawa Toyozo Uno 《Journal of pharmacokinetics and pharmacodynamics》1978,6(2):165-175
According to linear pharmacokinetics, the time course of plasma concentration of a drug, Cp,is expressed by a sum of exponential functions, Cp=
i=1
n
ai
.This article describes a statistical technique to estimate the number of exponential terms, n,for the time course of drug by the application of Akaike's information criterion (AIC). Plasma concentrations of ethoxybenzamide, sulfisoxazole, bishydroxycoumarin, and diazepam measured following bolus intravenous injection were used as clinical examples for this method. Selection of models is compared between the AIC method and an Ftest method at significance levels of 5% and 1%. 相似文献
59.
Takashi Uno Jun Itami Takeki Shiima Takafumi Toita Syuichi Mikuriya Kazuo Hatano Noboru Arimizu 《Cancer chemotherapy and pharmacology》1992,31(Z1):S106-S110
From April 1978 through December 1989, a total of 17 patients with unresectable hepatocellular carcinoma (HCC) were treated with radiation therapy alone or radiation therapy in conjunction with percutaneous ethanol injection (PEI), transarterial infusion chemotherapy (TAI), or transarterial embolization (TAE) at the National Medical Center Hospital. The median survival of all patients was 13.8 months. The survival values determined at 1, 2, and 3 years were 58.8%, 26.1%, and 9.8%, respectively. Only the pretreatment liver function affected the survival value. Between patients who did not have liver cirrhosis (LC) as well as those who had LC of Child's class A and patients who had LC of Child's class B or C, the differences observed in the 1-year survival value and the median duration of survival were statistically significant (P<0.05). the=" serum=" cholinesterase=" (che)=" level=" seemed=" to=" be=" a=" good=" indicator=" of=" liver=" function=" during=" the=" radiation=" therapy.=" a=" field=" size=" of=" 150=">0.05).>2 and a total dose of 5000 cGy (TDF 82) seemed to be well tolerated by patients who did not have LC and those who had LC of Child's class A. The field size determined whether patients with poor liver function such as LC of Child's class B or C would develop severe hepatic deterioration after undergoing radiation therapy.Presented at The Second International Symposium on Treatment of Liver Cancer. Taipei, 3–4 February 1991 相似文献
60.
Yoshihide Kii Katsuyoshi Nakatsuji Isamu Nose Masafumi Yabuuchi Michiaki Matsuda Tsugutaka Ito 《Drug development research》2003,58(2):209-217
The purpose of this study was to evaluate the effects of ebastine and terfenadine on the electrocardiogram of conscious dogs and cats. In dogs, terfenadine at oral doses of 30 mg/kg twice a day for 7 days prolonged the electrocardiographic QT interval and the corrected QT (QTc) interval on the seventh day, whereas the drug did not affect these parameters on the first day. Plasma concentrations of terfenadine and its active metabolite, fexofenadine, reached 306 and 8,541 ng/mL, respectively, on the seventh day. Ebastine at oral doses of 30 and 100 mg/kg once a day for 7 days was without effect on the QT and QTc intervals, whereas the drug slightly shortened the RR interval. On the seventh day following the dose of 100 mg/kg, plasma concentrations of ebastine and its active metabolite, carebastine, reached 36 and 1,939 ng/mL, respectively. In conscious cats, terfenadine at oral doses of 30 mg/kg twice a day for 7 days prolonged the QT and QTc intervals, QRS duration, JT and the corrected JT intervals. Unexpectedly, terfenadine induced ventricular tachyarrhythmia and premature beats. On the other hand, ebastine at oral doses of 100 mg/kg once a day for 7 days was without effect on the electrocardiographic parameters in cats. These results suggest that the electrocardiographic changes indicative of the proarrhythmic potential of terfenadine can be evaluated in conscious dogs and especially in conscious cats by repeated oral administration, and that ebastine does not induce such changes. 58:209–217, 2003. © 2003 Wiley‐Liss, Inc. 相似文献