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排序方式: 共有215条查询结果,搜索用时 31 毫秒
1.
Shunichi Takaya MD Shunzaburo Iwatsuki Takashi Noguchi Hisaaki Koie Iman Zaghloul Raman Venkataramanan Thomas E. Starzl 《Surgery today》1989,19(1):49-56
The influence of experimentally induced hepatic dysfunction on the pharmacokinetics of Cyclosporine A (CsA) was determined
in dogs. The pharmacokinetics of oral (PO) and intravenous (IV) CsA were studied before and after 70 per cent hepatectomy
or complete bile duct ligation (CBDL). Changes in liver function were monitored by serial measurements of serum bilirubin,
and by the maximum removal rate (Rmax) and plasma disappearance rate (ICG-K) of indocyanine green (ICG). Concentrations of
CsA in whole blood were measured by HPLC. Seventy per cent hepatectomy caused significant liver dysfunction: the ICG-Rmax
decreased by 47.7±7.1 per cent (mean±SD) and the ICG-K decreased by 61.3±9.7 per cent during the first week after hepatectomy.
At the same time, the systemic clearance (CLs) of IV-CsA decreased by 43.9±8.2 per cent, the area under the concentration
curve (AUC) of IV-CsA increased by 35.4±20.8 per cent and the bioavailability of CsA decreased by 26.4±14.8 per cent. CBDL
also induced significant liver dysfunction: the ICG-Rmax decreased by 39.1±12.8 per cent and the ICG-K decreased by 65.6±3.6
per cent in the second week after the operation. During the same period, the AUC of PO-CsA decreased by 69.9±10.7 per cent
and the bioavailability of CsA also decreased markedly by 73.9±15.6 per cent. These data indicate that hepatic impairment
significantly influences the pharmacokinetics of CsA, not only by the changes in intestinal absorption, but also by those
in hepatic, metabolism. Dose adjustment is therefore necessary in the presence of hepatic dysfunction in order to maintain
an adequate blood concentration of CsA without causing side effects.
This research was performed in the Department of Surgery, University of Pittsburgh Health Center, University of Pittsburgh,
USA 相似文献
2.
Kazuo Takayama Kanichi Yagawa Akiko Takahashi Hironori Nishio Morio Sudo Nobuyuki Sasaki Toru Yoshida Masanobu Satoh Hisaaki Abiko Akio Nunokawa Mitsuo Okazaki 《Pathology international》1969,19(4):547-562
A typical case of the D uchenne type of progressive muscular dystrophy with autopsy findings was presented. Changes in the myocardial and smooth muscle of many organs were found, and the skeletal muscles also revealed florid changes.
Histopathological examination of the skeletal muscle was made in detail through light and electron microscopic observation. 相似文献
Histopathological examination of the skeletal muscle was made in detail through light and electron microscopic observation. 相似文献
3.
Kenji Takagishi Makoto Yamamoto Hisaaki Miyahara Takao Hotokebuchi Nobuhiro Kaibara 《Inflammation research》1992,37(3-4):284-289
The effects of the immunosuppressive agents cyclosporin G (CsG) and cyclosporin A (CsA) on collagen arthritis were compared in mice. When administered subcutaneously daily on days 0–13 after immunization with type II collagen, CsG and CsA were both capable of suppressing the development of collagen arthritis in mice as well as the immunological response to native type II collagen in a dose-dependent manner. Histopathologically, no marked inflammatory lesions were observed in diarthroidal joints from mice treated with 100 mg/kg per day of CsA or 800 mg/kg per day of CsG. However, an analysis of dose response showed CsG to be 8 times less potent than CsA in inhibiting the development of arthritis. 相似文献
4.
Changes in the number, size, and structure of gonadotropin-producing cells, called basophil type 2 cells, were evaluated by light and electron microscopy throughout the process of sexual maturation in second-year male frogs, Rana nigromaculata. Hyperfunctional conditions were recognized two times, in the middle of May, and in and after August. The former activation corresponded well with the start of spermatogenesis, and the latter accompanied the increasing activity of the interstitial cells. Whether or not the hormone secreted during these two periods was the same substance is discussed. 相似文献
5.
Nishio H Sakakibara-Kawamura K Suzuki T Utsumi T Kinoshita S 《Kansenshōgaku zasshi. The Journal of the Japanese Association for Infectious Diseases》2002,76(1):67-71
A 56-year-old woman with Ph1--Positive acute Lymphoblastic Leukemia was admitted to our hospital for induction chemotherapy in June 1999. The patient was presented with a central scotoma of left eye during treatment course and was given diagnosis of endophthalmitis. Thereafter she also developed skin induration and suffered from serious pneumonia. Amphotericin B administration was started because of high titer of beta-D-glucan, but soon discontinued due to its adverse effect. Blood cultures yielded colonies of fungus and it was identified Fusarium solani. Her general condition deteriorated with progression of pneumonia, and she died of respiratory insufficiency. Autopsy was performed, and its specimen revealed the disseminated infection of Fusarium solani (lung, eye, heart, kidney and skin). We should pay special attention to the fusariosis in Japan also. 相似文献
6.
Mitsunobu Kitamura Noritake Hata Tadateru Takayama Atsushi Hirayama Masashi Ogawa Akira Yamashina Hisaaki Mera Hideaki Yoshino Fumitaka Nakamura Yoshihiko Seino 《Heart and vessels》2016,31(6):907-917
This multicenter prospective study was conducted to assess high-sensitivity troponin T (hs-TnT) and other biomarkers to decide and predict culprit lesions indicated for emergency percutaneous coronary intervention (PCI) in patients with suspicious acute coronary syndrome (ACS). We have reported Hs-TnT is the most sensitive biomarker for earlier diagnosis and decision making in patients with suspected ACS. In this study, we had conducted subanalysis investigating the usefulness for prediction of ACS culprit lesion. The patients with suspicious ACS and initially negative whole-blood rapid troponin T test, who underwent coronary angiogram (CAG), were enrolled (n = 74). Hs-TnT, quantitative assay for conventional troponin T (c-TnT), creatine kinase MB isozyme (CK-MB), and heart-type fatty acid-binding protein (H-FABP) were simultaneously measured. ACS culprit lesion was described as total occlusion, subtotal occlusion, and/or angiographical unstable lesion such as thrombosis, ulceration or irregularity. The CAG revealed that 49 cases had ACS lesions to be indicated for emergency PCI. The areas under the ROC curves and ROC-optimized cut-off of hs-TnT, c-TnT, CK-MB, and H-FABP were 0.75, 0.67, 0.68, and 0.75, respectively, and 18, 11, 2.0, and 4.6 ng/ml, respectively. In patients with total occlusion and 90–99 % of diameter stenosis (TIMI 2 or 3), hs-TnT could predict emergency PCI with significantly higher sensitivity compared with H-FABP (hs-TnT >14 ng/ml; 71 %, and H-FABP >6.2 ng/dl; 51 %, p = 0.021) and other biomarkers. Meanwhile, H-FABP displayed significant correlations with number of diseased vessels and presence of thrombotic lesion. The present study first revealed different characteristics of correlation between the angiographic culprit lesions and each cardiac biomarker. For prediction of ACS lesions requiring emergency PCI, hs-TnT had the highest sensitivity with satisfied analytical precision. 相似文献
7.
Tokuda Yoshiyuki Fujimoto Kazuro Narita Yuji Mutsuga Masato Terazawa Sachie Ito Hideki Matsumura Yasumoto Uchida Wataru Munakata Hisaaki Ashida Shinichi Ono Tsukasa Nishi Toshihiko Yano Daisuke Ishida Shinichi Kuwabara Fumiaki Akita Toshiaki Usui Akihiko 《Surgery today》2020,50(2):106-113
Surgery Today - Postoperative spinal cord injury is a devastating complication after aortic arch replacement. The purpose of this study was to determine the predictors of this complication. A group... 相似文献
8.
Satoshi Shimura Hideo Watari Masaru Komatsu Tomokazu Kuchibiro Saori Fukuda Hisaaki Nishio Machiko Kita Kaneyuki Kida Masanobu Oohama Hirofumi Toda Motoi Nishio Isao Nishi Keigo Kimura Kana Sawa Nozomi Fukuda Tomomi Kofuku Isako Nakai Makoto Niki Yasunao Wada 《Journal of infection and chemotherapy》2019,25(11):837-844
Obligate anaerobes exist as resident flora in various sites in humans, but they are also emphasized as endogenous causative microorganism of infections. We performed surveillance to understand the trend of drug susceptibility in obligate anaerobic bacteria in the Kinki area of Japan. In the experiment, we used 156 obligate anaerobe isolates collected from 13 institutions that participated in the Study of Bacterial Resistance Kinki Region of Japan. MALDI Biotyper was used to identify the collected strains, and among the 156 test strains, those that could be identified with an accuracy of Score Value 2.0 or more included 6 genera, 30 species, and 144 strains (Bacteroides spp. 77 strains, Parabacteroides sp. 2 strains, Prevotella spp. 29 strains, Fusobacterium spp. 14 strains, Porphyromonas spp. 2 strains, and Clostridioides difficile 20 strains), and they were assigned as subject strains for drug susceptibility testing. The drug susceptibility test was carried out by broth microdilution method using Kyokuto Opt Panel MP ANA (Kyokuto Pharmaceutical Industrial Co., Ltd., Tokyo, Japan) and judged according to CLSI criteria. As a result, Bacteroides and Parabacteroides species showed good sensitivities to tazobactam-piperacillin, imipenem, metronidazole and chloramphenicol, and low sensitivities to ampicillin, cefoperazone and vancomycin. Prevotella species showed good sensitivities to sulbactam-ampicillin, tazobactam-piperacillin, cefmetazole, imipenem, doripenem and metronidazole. Susceptibility rates to other drugs were slightly different depending on the bacterial species. Both Fusobacterium spp. and Porphyromonas spp. showed high sensitivities to many drugs. C. difficile was highly sensitive to vancomycin and metronidazole, having MIC90s of 0.5 μg/mL and ≤2 μg/mL, respectively. 相似文献
9.
Activated microglia in a rat stroke model express NG2 proteoglycan in peri‐infarct tissue through the involvement of TGF‐β1
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Kana Sugimoto Ryutaro Nishioka Airi Ikeda Ayano Mise Hisaaki Takahashi Hajime Yano Yoshiaki Kumon Takanori Ohnishi Junya Tanaka 《Glia》2014,62(2):185-198
We investigated activated microglia in ischemic brain lesions from rats that had been subjected to transient middle cerebral artery occlusion. Activated microglia expressing NG2 chondroitin sulfate proteoglycan (NG2) were found only in the narrow zone (demarcation zone) that demarcated the peri‐infarct tissue and ischemic core. NG2? activated microglia were abundantly distributed in the peri‐infarct tissue outside the demarcation zone. NG2+ microglia but not NG2? microglia expressed both CD68 and a triggering receptor expressed on myeloid cells 2 (TREM‐2), suggesting that NG2+ microglia eliminated apoptotic neurons. In fact, NG2+ microglia often attached to degenerating neurons and sometimes internalized NeuN+ or neurofilament protein+ material. Kinetic studies using quantitative real‐time RT‐PCR revealed that expression of transforming growth factor‐β1 (TGF‐β1) was most evident in the ischemic core; with this marker produced mainly by macrophages located in this region. TGF‐β receptor mRNA expression peaked at 3 days post reperfusion (dpr) in the peri‐infarct tissue, including the demarcation zone. Primary cultured rat microglia also expressed the receptor mRNA. In response to TGF‐β1, primary microglia enhanced the expression of NG2 protein and TREM‐2 mRNA as well as migratory activity. A TGF‐β1 inhibitor, SB525334, abolished these effects. The present results suggest that TGF‐β1 produced in the ischemic core diffused toward the peri‐infarct tissue, driving activated microglial cells to eliminate degenerating neurons. Appropriate control of NG2+ microglia in the demarcation zone might be a novel target for the suppression of secondary neurodegeneration in the peri‐infarct tissue. GLIA 2014;62:185–198 相似文献
10.
Optical properties of semiconductor quantum dots (QDs) can be tuned by doping with transition metal ions. In this study, water-soluble CdSe/ZnS:Mn/ZnS QDs with the core/shell/shell structure were synthesized through a hydrothermal method, in which the surface of the CdSe core was coated with a ZnS:Mn shell and ZnS capping shell. Herein, the CdSe core QDs were prepared first and then doped with Mn2+; therefore, the QD size and doping level could be controlled independently and interference from the self-purifying effect could be avoided. When CdSe cores with diameters less than 1.9 nm were used, Mn-related photoluminescence (PL) was observed as the main PL band, whereas the band-edge PL was mainly observed when larger CdSe cores were used. Furthermore, using ZnS:Cu as the doping shell layer, CdSe/ZnS:Cu/ZnS and ZnSe/ZnS:Cu/ZnS nanoparticles were successfully synthesized, and Cu-related PL was clearly observed. These results indicate that the core/shell/shell QD structure with doping in the shell layer is a versatile method for synthesizing doped QDs.The core/shell/shell QD structure with doping in the shell layer is a versatile method for synthesizing doped QDs. 相似文献