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991.
Yang Cao Hatasu Kobayashi Takaaki Morimoto Risako Kabata Kouji H. Harada Akio Koizumi 《Environmental health and preventive medicine》2016,21(5):387-390
Objectives
RNF213 p.R4810K is a founder polymorphism that confers genetic susceptibility to moyamoya disease in East Asia. Only a few studies have investigated the symptoms and disease histories of RNF213 p.R4810K carriers in Japan. This study investigated the frequency of RNF213 p.R4810K in the general Japanese population and the health characteristics of the carriers.Methods
Through a health-promotion campaign in the city of Uji, Japan, 519 subjects (120 males and 399 females) of the general Japanese population were genotyped for RNF213 p.R4810K and interviewed to determine health characteristics.Results
Nine RNF213 p.R4810K heterozygous carriers (GA genotype) and no RNF213 p.R4810K homozygous carriers (AA genotype) were found among the 519 individuals. The estimates of the genotypes and allele frequencies for RNF213 p.R4810K were 1.73 and 0.87 %, respectively. There were no obvious differences in age, gender ratio, body mass index, hypertension, dyslipidemia, diabetes, kidney disease, liver disease, heart disease, or drinking or smoking habits between carriers and non-carriers. Interestingly, one patient with moyamoya disease was found among the nine RNF213 p.R4810K carriers.Conclusions
This study showed the genotypes and allele frequencies of RNF213 p.R4810K in the general Japanese population to be similar to results of previous reports.992.
993.
Nobusada Shinoura Naoki Yamamoto Yoko Yoshida Takashi Fujita Nobuto Saito Akio Asai Takaaki Kirino Hirofumi Hamada 《Cancer science》2000,91(1):41-51
Tumor necrosis factor-α (TNF), which was initially supposed to be a promising cancer therapeutic reagent, does not kill most types of cancer cells partly due to the activation of an anti-apoptotic gene, NF-kB. NF-kB forms an inactive complex with the inhibitor kappa B alpha (IkBα), which is rapidly phosphorylated and degraded in response to various extracellular signals. To disrupt this protective mechanism, we introduced an inhibitor kappa B alpha (IkBdN) gene, a deletion mutant gene lacking the nucleotides for the N-terminal 36 amino acids of IkBα, into human glioma cells (U251, T-98G, and U-373MG) via an adenoviral (Adv) vector in addition to treatment of the glioma cells with recombinant TNF. Immunohistochemical analysis revealed that NF-kB was translocated to nuclei by TNF treatment in U251 and T-98G cells, but not in U-373MG cells. Neither transduction of IkBdN nor treatment with TNF protein alone induced apoptosis in U251 and T-98G cells, whereas both cell lines underwent drastic TNF-induced apoptosis after transduction of IkBdN. On the other hand, U-373MG cells were refractory to TNF-induced apoptosis even when they were transduced with the IkBdN gene. U-373MG cells underwent drastically increased apoptosis when co-transduced with the IkBdN and Bax gene in the presence of TNF. Adv-mediated transfer of IkBdN or IkBdN plus Bax may be a promising therapeutic approach to treat gliomas through TNF-mediated apoptosis. 相似文献
994.
Haruka Toyoda Tomoe Mizushima Masahiko Satoh Narushi Iizuka Akio Nomoto Harumi Chiba Masaharu Mita Akira Naganuma Seiichiro Himeno Nobumasa Imura 《Cancer science》2000,91(1):91-98
Plasmid pSV2MT-I encoding mouse metallothionein-I (MT-I) designed to be expressed under the control of an SV40 promoter was introduced into human HeLa S3 cells. Several transformants (HeLa/MTH) carrying multi-copies of mouse MT-I cDNA in their genomes were isolated. These transformants produced 4 to 20-fold larger amounts of MT than their parent cells. The MT levels in HeLa/MTH were well correlated with the extent of resistance to cadmium, but not with that to cis -platinum ( cis -DDP) in vitro. To study the role of MT in resistance to cis -DDP in vivo , nude mice were inoculated subcutaneously with two independent HeLa/MTH clones. MT levels in these tumors were about 3-fold higher than those in the parental cells. The growth of tumors derived from either HeLa/MTH clone was not inhibited in the presence of 15 μmol/kg of cis -DDP, which completely inhibited the growth of tumors derived from the parental HeLa cells. These data strongly suggest that the elevated level of MT confers resistance to cis -DDP in vivo but not in vitro. Thus, the results of this study indicate that in vitro determinations of the influence of MT on cis -DDP resistance may underestimate its importance in in vivo situations. 相似文献
995.
Jun-ichi Sudo Jun Terui Toshio Higa Kazutaka Kukita Motoki Yonekawa Akio Kawamura Kyoko Kon Tadamasa Kon 《Clinical and experimental nephrology》1999,3(1):23-28
Background. Desferrioxamine (DFO) a chelating agent, is used to treat metal toxicity caused by iron and aluminum in patients on hemodialysis.
We hypothesized that DFO could also be used to treat cadrium-induced nephropathy. Animal experiments were therefore performed
to explore whether DFO removed cadmium (Cd) from the kidneys of rats with a Cd burden.
Methods. Rats received subcutaneous injections of Cd chloride (3 mg Cd/kg per day, days 0–7) followed by DFO (50 mg/kg per day, days
8–14). Levels of Cd were determined in liver, kidneys, and plasma. Enzymes assays and histopathological examination were performed
in kidneys.
Results. In liver, Cd injections elevated Cd levels; subsequent injections of DFO lowered the Cd levels compared with levels after
injections of Cd alone. In kidneys, Cd injections increased levels of total Cd and Cd bound to cellular membranes (Mem-Cd),
and decreased leucine aminopeptidase (LAP) activity (a marker of renal injury); subsequent injections of DFO elevated levels
of total Cd and Mem-Cd, and lowered LAP activity compared with fundings after the injection of Cd alone. After the injections
of Cd alone and DFO following Cd the renal levels of Cd were below the critical concentration required to cause renal injury,
since no histopathological changes were observed in the kidney.
Conclusion. DFO administration to Cd-burdened rats removed Cd from the liver, but led to accumulation of Cd in the kidneys, particularly
in the cellular membranes. These results suggest that if DFO is given long-term to Cd-burdened patients, the Cd level in kidneys,
particularly in renal cellular membranes, could reach concentrations that could cause manifest renal injury.
Received: April 13, 1998 / Accepted: August 6, 1998 相似文献
996.
Tomohiro Watanabe Masatoshi Kudo Makoto Kayaba Hirofumi Shirane Shusuke Tomita Akio Orino Akio Todo Tsutomu Chiba 《Journal of gastroenterology》1999,34(4):525-529
A patient with massive rectal bleeding due to ileal tuberculosis is reported. Technetium-99m labelled red blood cell scintigraphy
indicated hemorrhage from the ileum, and laparotomy was then carried out. A 70-cm segment of ileum containing ulcers and erosions
was resected, and epitheloid granuloma with Langhans-type giant cell was found in the resected specimen. Massive rectal bleeding
is considered a rare presenting symptom of intestinal tuberculosis. Intestinal tuberculosis, including small intestinal tuberculosis,
although uncommon, should be taken into consideration as a cause of rectal bleeding.
Received: September 16, 1998 / Accepted: February 26, 1999 相似文献
997.
Abdominal aortic dilatation in Japanese residents 总被引:1,自引:0,他引:1
Susumu Ishikawa M.D. Toru Takahashi M.D. Kazuhiro Sakata M.D. Masao Suzuki M.D. Motoi Kano M.D. Osamu Kawashima M.D. Kiyohiro Ohshima M.D. Shigeru Oki M.D. Akio Ohtaki M.D. Yasuo Morishita M.D. 《The International journal of angiology》1999,8(1):27-28
The correlation between abdominal aortic dilatation and arteriosclerotic risk factors was studied in 2514 Japanese residents (947 men, 1567 women, mean age 70 years old). The aortic diameter was measured by ultrasound and an aortic dilatation was defined as above 30 mm in diameter, including abdominal aortic aneurysm (AAA). Forty-three (1.7%) patients with a dilated aorta and 2471 with a normal-sized aorta were compared. Abdominal aortic dilatation was significantly (p<0.01) more frequent in men than in women (3% vs 0.7%). Obesity and hyperlipidemia were slightly (p<0.1) more frequent in patients with a dilated aorta than in those with a normal-sized aorta. There were no significant differences between the two groups in mean age, frequency of smoking, diabetes mellitus, and coronary artery disease. In conclusion, male obesity and hyperlipidemia may be risk factors for aortic dilatation in Japan. Women may not be screened because of cost-effectiveness. The prevalence of aortic dilatation in Japan was lower than in European countries. However, screening for AAA using ultrasound would be advantageous when considering the grave prognoses of ruptured AAA. 相似文献
998.
Akio Kawamura Masao Saitoh Motoki Yonekawa Takashi Horie Hiroko Ohizumi Tohru Tamaki Kazutaka Kukita Jun-ichi Meguro 《Therapeutic apheresis and dialysis : official peer-reviewed journal of the International Society for Apheresis, the Japanese Society for Apheresis, the Japanese Society for Dialysis Therapy》1999,3(4):334-337
Abstract: Leukocytapheresis (LCAP) is widely used for the treatment of immunological diseases. We studied a new treatment of LCAP using a nonwoven polyester fiber filter. In a basic study, 30–70% of leukocytes were removed. Also, 30–68% of the leukocyte subsets were removed. Sixteen inflammatory bowel disease (IBD) patients, mainly with ulcerative colitis (UC), were treated by this method. Their cytokine activity was normalized in the filter and in the peripheral blood. Eleven of 12 patients with UC were induced to remission. Four patients with Crohn's disease (CD) exhibited improvement. The LCAP using a nonwoven polyester fiber filter was very efficient for treating the patients with IBD. Also, it will be a very useful treatment for immunological diseases and extracorporeal immunomodulation. 相似文献
999.
Akio Sakamoto MD Yoshinao Oda MD Yukihide Iwamoto MD Masazumi Tsuneyoshi MD 《Human pathology》1999,30(12):1418
Fibrous dysplasia and osteofibrous dysplasia are both benign fibro-osseous lesions of the bone and are generally seen during childhood or adolescence. Histologically, the features of these bone lesions sometimes look quite similar, but their precise nature remains controversial. We retrospectively studied clinicopathologic findings in 62 cases of fibrous dysplasia and 20 cases of osteofibrous dysplasia with regard to their anatomic location and histological appearance. From among these cases, the immunohistochemical expressions of c-fos and c-jun proto-oncogene products and bone matrix proteins of type I collagen, osteonectin, osteopontin, and osteocalcin were evaluated in 20 typical fibrous dysplasias and 17 osteofibrous dysplasias using paraffin sections, and these expressions were then assessed semiqnantitatively. Microscopically, fibrous dysplasia showed various secondary changes, such as hyalinization, hemorrhage, xanthomatous reaction, and cystic change in 22 of the 62 cases (35%). This was a higher incidence than in osteofibrous dysplasia, in which only 2 of the 20 cases (10%) showed such changes. In the elderly fibrous dysplasia cases, the cellularity of fibroblast-like cells was rather low, and those cases were hyalinized. Almost all of the cases of fibrous dysplasia and osteofibrous dysplasia showed positive expressions of c-fos and c-jun products. The expressions of type I collagen and osteopontin showed no difference between fibrous dysplasia and osteofibrous dysplasia. Immunoreactivity for osteonectin in bone matrix was detected in only 1 case of fibrous dysplasia (1 of 20), whereas it was recognized in 14 of the 17 cases of osteofibrous dysplasia. Furthermore, the immunoreactivity for osteocalcin in bone matrix and fibroblast-like cells was higher in fibrous dysplasia than it was in osteofibrous dysplasia, semiquantitatively. Our immunohistochemical results regarding osteonectin and osteocalcin suggest that the bone matrix of fibrous dysplasia is somewhat more mature than that of osteofibrous dysplasia, and that the fibroblast-like cells in fibrous dysplasia share some phenotypic features with osteoprogenitor ceils of normal osteogenic tissues. Fibrous dysplasia and osteofibrous dysplasia share Some similar histological features, including c-fos and c-jun expressions, although different clinicohistologic features and immunohistochemical expressions of osteonectin and osteocalcin were observed. These features suggest that the mechanisms behind the development of fibrous dysplasia and osteofibrous dysplasia are similar, but this is not necessarily indicative of a closer relationship between the 2 diseases. 相似文献
1000.
Shozo Akasaka Hideyuki Nishi Motoi Aoe Hiroshi Date Akio Andou Nobuyoshi Shimizu 《Surgery today》1999,29(8):747-754
The intrapulmonary thrombi that form after the cessation of circulation are thought to be one of the major causes of graft
function failure. We evaluated the effect of recombinant tissue-type plasminogen activator (rt-PA) in a canine cadaver lung
transplant model. Donor dogs were killed by the intravenous administration of pancuronium bromide without heparinization,
and left for 2h at room temperature. The donor lungs were then flushed with low potassium dextran glucose (LPDG) solution,
being subjected to a total ischemic time of 3h. Following left lung transplantation, the contralateral pulmonary artery of
the recipient dogs was ligated. In group 1 (n=6), chloride solution was administered from the main pulmonary artery for 90 min, commencing 15 min prior to reperfusion.
In group 2 (n=6), 2.5 μg/kg per min of rt-PA, and in group 3 (n=6), 5.0 μg/kg per min of rt-PA, were continuously infused in the same manner as in group 1. Lung function, including arterial
blood gases and pulmonary hemodynamics, was measured for 3h. The side effects of rt-PA were evaluated by measuring the prothrombin
time (PT), activated partial thromboplastin time (APTT), fibrinogen, alpha2-plasmin inhibitor (α2-PI), plasminogen, and fibrin/fibrinogen degradation product (FDP). All of the animals in the three groups survived throughout
the observation period. The group 3 animals had significantly better gas exchange than the group 1 animals, and the pulmonary
hemodynamics were significantly better in the group 2 and 3 animals than in the group 1 animals. The FDP levels in the group
2 and 3 animals were significantly higher than those in the group 1 animals, while the PT and APTT were significantly prolonged
in the group 3 animals. These findings led us to conclude that rt-PA improves early lung function, particularly pulmonary
hemodynamics. 相似文献