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Nakano, Takafumi,Seo, Hong-Yul The Korean Society of Systematic Zoology 2014 Animal Systematics, Evolution and Diversity Vol.30 No.2
Specimens of the genus Orobdella Oka, 1895 from Korea, including various locations in the Korean Peninsula, were identified as Orobdella tsushimensis Nakano, 2011. Phylogenetic analyses using mitochondrial cytochrome oxidase subunit 1 (COI), ND1, $tRNA^{Cys}$, $tRNA^{Met}$, 12S rRNA, $tRNA^{val}$, and 16S rRNA markers show that the newly collected specimens form a monophyletic group with the known O. tsushimensis specimens. The genetic distance of COI of these specimens was in the range 0.4-6.6%. These results confirm that the newly collected specimens belong to O. tsushimensis. This is the first record of the genus Orobdella from the Korean Peninsula.
Akiyo Nakano,Ryuichi Nakano,Yuki Suzuki,Kyoichi Saito,Kei Kasahara,Shiro Endo,Hisakazu Yano 대한진단검사의학회 2018 Annals of Laboratory Medicine Vol.38 No.4
Dear Editor, Carbapenem-resistant Enterobacteriaceae have acquired carbapenemase genes [1], which differ substantially across countries [2]. Transferable carbapenemase IMP-type metallo-β-lactamases, particularly IMP-1 and IMP-6, are commonly identified in the clinical setting in Japan [3, 4] and exhibit different substrate specificity despite having a difference of only one amino acid (IMP-6: Ser214Gly). IMP-1 producers are more resistant to imipenem than to meropenem, whereas IMP-6 producers are more resistant to meropenem [5]. We previously found that the susceptibility rate of IMP-6-positive Escherichia coli was higher for imipenem than for meropenem [3]. Thus, IMP-6-producing isolates may be erroneously categorized as imipenem-susceptible, which could lead to treatment failure in patients.
Takafumi Nakano,Hong-Yul Seo 한국동물분류학회 2014 Animal Systematics, Evolution and Diversity Vol.30 No.2
Specimens of the genus Orobdella Oka, 1895 from Korea, including various locations in the Korean Peninsula, were identified as Orobdella tsushimensis Nakano, 2011. Phylogenetic analyses using mitochondrial cytochrome oxidase subunit 1 (COI), ND1, tRNACys, tRNAM<SUP>et</SUP>, 12S rRNA, tRNA<SUP>val</SUP>, and 16S rRNA markers show that the newly collected specimens form a monophyletic group with the known O. tsushimensis specimens. The genetic distance of COI of these specimens was in the range 0.4-6.6%. These results confirm that the newly collected specimens belong to O. tsushimensis. This is the first record of the genus Orobdella from the Korean Peninsula.
Masuo Nakano,Shiro Nakano,Hideo Takekoshi 한국식품영양과학회 2007 Journal of medicinal food Vol.10 No.1
In addition to meeting nutritional requirements, breast milk plays important roles in biodefense for nursing in-fants. Dioxins have been detected at high concentrations in breast milk, raising concerns about disorders in nursing infantscaused by breast milk containing dioxins in Japan. We analyzed dioxin levels in breast milk and maternal blood samples from35 pregnant women in Japan. We also measured immunoglobulin (Ig) A concentrations in breast milk and investigated cor-relations with dioxin concentrations. In addition, 18 of the 35 women took Chlorella pyrenoidosa(Chlorella) supplementsduring pregnancy, and the effects on dioxin and IgA concentrations in breast milk were investigated. Toxic equivalents weresignificantly lower in the breast milk of women taking Chlorellatablets than in the Control group (P. .003). These resultssuggest that Chlorellasupplementation by the mother may reduce transfer of dioxins to the child through breast milk. No sig-nificant correlation was identified between dioxin and IgA concentrations in breast milk in the Control group. It is unlikelythat normal levels of dioxin exposure via food have a remarkable influence on IgA in breast milk. IgA concentrations in breastmilk in the Chlorellagroup were significantly higher than in the Control group (P. .03). Increasing IgA levels in breast milkis considered to be effective for reducing the risk of infection in nursing infants. The present results suggest that Chlorellasupplementation not only reduces dioxin levels in breast milk, but may also have beneficial effects on nursing infants by in-creasing IgA levels in breast milk.
Hong-Yul Seo,Takafumi Nakano 한국응용곤충학회 2012 한국응용곤충학회 학술대회논문집 Vol.2012 No.05
New record of family of arhynchobdellida leeches (Orobdellidae) from Gageodo Island is presented. We have surveyed for land leeches in Korea from July to September in 2011 and found 1 species. This is Orobdella tsushimensis Nakano, 2011, reported for the first time in Korean Peninsula. This species gets the following characteristics: IV unianulate; 1/2+5 annuli between gonopores; bottle-shaped gastroporal duct; and epididymides in XVII–XIX. According to their morphological features, the diagnosis of O. tsushimensis is slightly emended. Phylogenetic analyses using mitochondrial COI, tRNACys, tRNAMet, 12SrDNA, tRNAVal and 16SrDNA markers show that the Orobdella specimen from Gageodo Isl. and O. tsushimensis from Tsushima Island, Japan, form a monophyletic clade and also confirm the identification of the Orobdella specimens from Gageodo Isl.
Bioavailability of Iron-fortified Whey Protein Concentrate in Iron-deficient Rats
Nakano, Tomoki,Goto, Tomomi,Nakaji, Tarushige,Aoki, Takayoshi Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.7
An iron-fortified whey protein concentrate (Fe-WPC) was prepared by addition of ferric chloride to concentrated whey. A large part of the iron in the Fe-WPC existed as complexes with proteins such as ${\beta}$-lactoglobulin. The bioavailability of iron from Fe-WPC was evaluated using iron-deficient rats, in comparison with heme iron. Rats were separated into a control group and an iron-deficiency group. Rats in the control group were given the standard diet containing ferrous sulfate as the source of iron throughout the experimental feeding period. Rats in the iron-deficiency group were made anemic by feeding on an Fe-deficient diet without any added iron for 3 wk. After the iron-deficiency period, the iron-deficiency group was separated into an Fe-WPC group and a heme iron group fed Fe-WPC and hemin as the sole source of iron, respectively. The hemoglobin content, iron content in liver, hemoglobin regeneration efficiency (HRE) and apparent iron absorption rate were examined when iron-deficient rats were fed either Fe-WPC or hemin as the sole source of iron for 20 d. Hemoglobin content was significantly higher in the rats fed the Fe-WPC diet than in rats fed the hemin diet. HRE in rats fed the Fe-WPC diet was significantly higher than in rats fed the hemin diet. The apparent iron absorption rate in rats fed the Fe-WPC diet tended to be higher than in rats fed the hemin diet (p = 0.054). The solubility of iron in the small intestine of rats at 2.5 h after ingestion of the Fe-WPC diet was approximately twice that of rats fed the hemin diet. These results indicated that the iron bioavailability of Fe-WPC was higher than that of hemin, which seemed due, in part, to the different iron solubility in the intestine.
Brake Lining Can be Applied to Super High Speed Vehicle
Nakano Satoru,Maejima Takashi 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
A new material was developed to achieve improvement of heat durability, improvement of wear resistance, stability of friction coefficient and reduction in aggression to counterpart, because it is difficult to maintain braking properties by using currently available materials in the train wagons used for high-speed transportation. As a result, the new material showed a stable wear resistance even in the speed range of 350km/h, where improvement was also confirmed in reduction of aggression to counterpart material by more than approximately 10%. This development was adopted for the brake lining in the Taiwan High Speed Rail project.
<sup>123</sup>I-Labeled oxLDL Is Widely Distributed Throughout the Whole Body in Mice
Nakano, Atushi,Kawashima, Hidekazu,Miyake, Yoshinori,Zeniya, Tsutomu,Yamamoto, Akihide,Koshino, Kazuhiro,Temma, Takashi,Fukuda, Tetsuya,Fujita, Yoshiko,Kakino, Akemi,Kanaya, Shigehiko,Sawamura, Tatsuy 대한핵의학회 2018 핵의학 분자영상 Vol.52 No.2
Purpose Oxidized low-density lipoprotein (oxLDL) plays a key role in endothelial dysfunction, vascular inflammation, and atherogenesis. The aim of this study was to assess blood clearance and in vivo kinetics of radiolabeled oxLDL in mice. Methods We synthesized $^{123}I-oxLDL$ by the iodine monochloride method, and performed an uptake study in CHO cells transfected with lectin-like oxLDL receptor-1 (LOX-1). In addition, we evaluated the consistency between the $^{123}I-oxLDL$ autoradiogram and the fluorescence image of DiI-oxLDL after intravenous injection for both spleen and liver. Whole-body dynamic planar images were acquired 10 min post injection of $^{123}I-oxLDL$ to generate regional time-activity curves (TACs) of the liver, heart, lungs, kidney, head, and abdomen. Regional radioactivity for those excised tissues as well as the bladder, stomach, gut, and thyroid were assessed using a gamma counter, yielding percent injected dose (%ID) and dose uptake ratio (DUR). The presence of $^{123}I-oxLDL$ in serum was assessed by radio-HPLC. Results The cellular uptakes of $^{123}I-oxLDL$ were identical to those of DiI-oxLDL, and autoradiograms and fluorescence images also exhibited consistent distributions. TACs after injection of $^{123}I-oxLDL$ demonstrated extremely fast kinetics. The radioactivity uptake at 10 min post-injection was highest in the liver ($40.8{\pm}2.4%$ ID). Notably, radioactivity uptake was equivalent throughout the rest of the body ($39.4{\pm}2.7%$ ID). HPLC analysis revealed no remaining $^{123}I-oxLDL$ or its metabolites in the blood. Conclusion $^{123}I-oxLDL$ was widely distributed not only in the liver, but also throughout the whole body, providing insight into the pathophysiological effects of oxLDL.
Nakano, Hideo,Okumura, Reiko,Goto, Chinatsu,Yamane, Tsuneo The Korean Society for Biotechnology and Bioengine 2002 Biotechnology and Bioprocess Engineering Vol.7 No.5
By the in vitro combinatorial mutagenesis, which is a sequential reaction of PCR mutagenesis and in vitro coupled transcription/translation with Escherichia coli S30 extract, S65 and E222 of green fluorescent protein of Aequarea victoria were comprehensively changed to all possible combinations of amino acids, thus totally 400 mutant (including a wild type) proteins were simultaneously produced and their fluorescent properties were analyzed. Although a few mutations had been reported so far at the 222nd position, replacement E222 to all other19 amino acids gave fluorescent signal to the mutants by changing Ser 65 to Ala together. Among the mutants, replacement to G, A, S, Q, H and C gave relatively high fluorescence. The in vitro combinatorial mutagenesis, therefore, has been proved valuable for comprehensive structure-function studies of proteins.