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排序方式: 共有220条查询结果,搜索用时 15 毫秒
1.
M Murakoshi M Tagawa R Inada M Suzuki 《The Tokai journal of experimental and clinical medicine》1992,17(3-4):133-137
The effects of testosterone (T) and 17 beta-estradiol (E2) on the prostate of castrated rats were investigated by histopathological and immunocytochemical procedures. A significant increase in prostatic weight occurred after 6 weeks treatment with T alone and in combination with E2. The greatest increase in prostatic weight occurred after the administration of T plus E2. Histopathologically, glandular hyperplasia of the prostate was noted, and the number of bromodeoxyuridine (BrdU)-positive cells showed a significant increase over that induced by testosterone alone. 相似文献
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M Murakoshi R Inada M Tagawa M Makino M Suzuki M Mieda S Honma Y Takezawa H Yamanaka 《Acta pathologica japonica》1992,42(3):151-157
The effect of a synthetic steroidal anti-androgen, TZP-4238, on spontaneous benign prostatic hyperplasia (BPH) in dogs was investigated. Old male beagle dogs (5-9 years old) were divided into three experimental groups. Group 1 consisted of BPH controls. Groups 2 and 3 received TZP-4238 0.1 mg/kg/day and chlormadinone acetate (CMA) 0.3 mg/kg/day p.o., respectively, for 5 months. In group 1, glandular hyperplasia of the prostate was clearly detected. In contrast, TZP-4238 (Group 2) or CMA (Group 3) produced marked atrophy of the glandular epithelium. In addition, a histopathological study showed that TZP-4238 or CMA medication for 5 months exerted no effect on the testes and the pituitary luteinizing hormone (LH) cells. Therefore, it is suggested that TZP-4238 (0.1 mg/kg) or CMA (0.3 mg/kg) causes regression of spontaneous canine BPH without any histopathological effects on the testes and pituitary LH cells. However, slightly decreased serum testosterone levels were found in TZP-4238-treated animals, due apparently to a direct and/or indirect effect on the testes. Thus, it is suggested that a marginal antigonadotrophic effect cannot be excluded. It is concluded that TZP-4238 is a potent anti-androgen for the treatment of spontaneous canine BPH, without any negative influence on the function of the testes and the pituitary LH cells. 相似文献
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M Murakoshi R Inada M Makino M Suzuki M Mieda S Honma H Yamanaka 《Acta pathologica japonica》1990,40(12):871-879
The effect of a synthetic steroidal anti-androgen, TZP-4238, on steroid-induced canine prostatic hyperplasia was studied by light and electron microscopy. Male beagle dogs (1-2 years old) were divided into four experimental groups. Group 1 consisted of intact controls. The other animals were castrated. The castrated animals were treated for 25 weeks with 1) 5 alpha-androstane-3 alpha, 17 beta-diol (A-diol) plus 17 beta-estradiol (E2) (Group 2), 2) A-diol plus E2 + TZP-4238 0.5 mg/kg (Group 3) and 3) A-diol plus E2 + chlormadinone acetate (CMA) 2.5 mg/kg (Group 4). TZP-4238 and CMA were administered orally for 21 weeks after 4 weeks treatment with A-diol plus E2. In group 2, glandular hyperplasia of the prostate was clearly noted. In contrast, combined treatment with TZP-4238 (Group 3) or CMA (Group 4) produced marked atrophy of the glandular epithelium. Loss of secretory and metabolic activities was confirmed by ultrastructural investigations. Our data indicate that TZP-4238 is a potent anti-androgen for the prevention of canine prostatic hyperplasia in the steroid-induced benign prostatic hyperplasia (BPH) model. 相似文献
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Metal-free carbonaceous catalysts have potential applications for oxygen evolution reaction (OER) devices because of their low-cost and abundant supply. We report that fluorine-doped carbon black is an active catalyst for OER. Fluorine-doped carbon black (F-KB) is simply synthesized by the pyrolysis of KETJENBLACK (KB) as carbon substrate with Nafion as fluorine precursor. As a result, the OER activity of F-KB is significantly higher than that of pristine KB in alkaline media. The OER catalytic activity of F-KB is found to be dependent on the quantity and characteristics of carbon-fluorine bonding (C–F) which can be controlled by the pyrolysis temperature. It is further found that the OER activity depends on the quantity of semi-ionic C–F bonds, but not covalent C–F bonds. This result proves the importance of carbon atoms with semi-ionic C–F bonds as the active sites for OER.Fluorine-doped carbon has a higher electrocatalytic oxygen evolution activity than pristine carbon black in alkaline media. The activity of oxygen evolution and characteristics of carbon to fluorine bond are controlled by pyrolysis temperature of Nafion. 相似文献
6.
Akiko Ishiwa Kyousuke Kobayashi Hitoshi Takemae Tatsuki Sugi Haiyan Gong Frances C. Recuenco Fumi Murakoshi Atsuko Inomata Taisuke Horimoto Kentaro Kato 《Parasitology research》2013,112(12):4169-4176
Toxoplasma gondii is one of the most prevalent parasites, causing toxoplasmosis in various warm-blooded animals, including humans. Because of the broad range of hosts susceptible to T. gondii, it had been postulated that a universal component of the host cell surface, such as glycosaminoglycans (GAGs), may act as a receptor for T. gondii infection. Carruthers et al. (Infect Immun 68:4005–4011, 2000) showed that soluble GAGs have also been shown to disrupt parasite binding to human fibroblasts. Therefore, we investigated the inhibitory effect of GAGs and their analogue dextran sulfate (DS) on T. gondii infection. For up to 24 h of incubation after inoculation of T. gondii, the inhibitory effect of GAGs on T. gondii infection and growth inside the host cell was weak. In contrast, DS markedly inhibited T. gondii infection. Moreover, low molecular weight DS particularly slowed the growth of T. gondii inside host cells. DS10 (dextran sulfate MW 10 kDa) was the most effective agent in these in vitro experiments and was therefore tested for its inhibitory effects in animal experiments; infection inhibition by DS10 was confirmed under these in vivo conditions. In this report, we showed that DSs, especially DS10, have the potential of a new type of drug for toxoplasmosis. 相似文献
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Murakoshi Miki Kamei Koichi Ogura Masao Sato Mai Nada Taishi Suzuki Ryutaro Kamae Chikako Nishi Kentaro Kanamori Toru Nagano China Nozu Kandai Nakanishi Koichi Iijima Kazumoto 《Clinical and experimental nephrology》2022,26(2):162-169
Clinical and Experimental Nephrology - The management of congenital nephrotic syndrome of the Finnish type (CNF) is challenging. It is difficult to withdraw intravenous albumin infusions, resulting... 相似文献
10.
Mana Tomiyama Saki Takayama Hiroko Konno Takeshi Murakoshi Masafumi Koga Momoko Nakamura Yasuhiro Yamashiro Tadashi Matsubayashi 《Pediatric blood & cancer》2023,70(12):e30666
Case 1 presented with severe anemia and received an intrauterine blood cell transfusion at 33 weeks of gestation. The anemia spontaneously improved in early infancy. Case 2, the father of Case 1, had an uneventful birth with no evidence of anemia, though microcytic anemia was observed during childhood. The genetic analysis of the β-globin gene cluster identified a novel heterozygous deletion of DNA extending from the Gγ-globin gene downstream to the β-globin gene, confirming a diagnosis of (GγAγδβ)0-thalassemia. In cases where thalassemia is suspected based on blood tests, a genetic diagnosis should be performed for the sake of the offspring. 相似文献