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81.
Sueyoshi Kuni; Kubo Yoshihiro; Yamagishi Kenji; Ogura Nagao; Ochiai Kuniyasu; Fukushima Kazuo; Ikeda Tadashi; Nakagawa Hiroki 《Plant & cell physiology》1988,29(6):975-980
Two monoclonal antibodies, 17(3)9 and 36(79)4, were preparedagainst nitrate reductase from Spinacia oleracea L. leaves.An enzyme-linked immunosorbent assay showed that 17(3)9, butnot 36(79)4, reacted more strongly to heat-denatured than nativeantigen. These antibodies inhibited NADH-nitrate reductase aswell as its various partial activities including reduced methylvilogen-nitrate reductase, reduced flavin mononucleotide-nitratereductase and NADH-cytochrome c reductase activities, but notNADH-ferricyanide reductase activity. Immunoblotting after electrophoreticseparation of nitrate reductase fragments obtained by Staphyrococcusaureus V8 protease digestion of native enzyme revealed thatthe two monoclonal antibodies bind to different epitopes locatedon the 28 kDa of the NADH-ferricyanide reductase domain. (Received October 2, 1987; Accepted June 9, 1988) 相似文献
82.
Fluoroquinolones and propionic acid derivatives are widely used antibacterials and non-steroidal anti-inflammatory drugs, respectively, which have been reported to frequently trigger drug hypersensitivity reactions. Such reactions are induced by inflammatory mediators such as cytokines and chemokines. The present study investigated whether levofloxacin, a fluoroquinolone, and loxoprofen, a propionic acid derivative, have the potential to induce immune-related gene expression in dendritic cell-like cell lines such as HL-60, K562, and THP-1, and immortalized keratinocytes such as HaCaT. The expression of IL-8, MCP-1, and TNFα messenger RNA (mRNA) was found to increase following treatment with levofloxacin or loxoprofen in HL-60 cells. In addition, these drugs increased the mRNA content of annexin A1, a factor related to keratinocyte necroptosis in patients with severe cutaneous adverse reactions. Inhibition studies using specific inhibitors of mitogen-activated protein (MAP) kinases and NF-κB suggest that the extracellular signal-regulated kinase (ERK) pathway is the pathway principally involved in the induction of cytokines and annexin A1 by levofloxacin, whereas the involvement of MAP kinases and NF-κB in the loxoprofen-induced gene expression of these factors may be limited. Fluoroquinolones and propionic acid derivatives that are structurally related to levofloxacin and loxoprofen, respectively, were also found to induce immune-related gene expression in HL-60 cells. Collectively, these results suggest that fluoroquinolones and propionic acid derivatives have the potential to induce the expression of immune-related factors and that an in vitro cell-based assay system to detect the immune-stimulating potential of systemic drugs might be useful for assessing the risk of drug hypersensitivity reactions. 相似文献
83.
Role of G protein‐coupled receptor kinase 2 in oxidative and nitrosative stress‐related neurohistopathological changes in a mouse model of sepsis‐associated encephalopathy 下载免费PDF全文
84.
This article describes research conducted for the Japanese government in the wake of the magnitude 9.0 earthquake and tsunami that struck eastern Japan on March 11, 2011. In this study, material stock analysis (MSA) is used to examine the losses of building and infrastructure materials after this disaster. Estimates of the magnitude of material stock that has lost its social function as a result of a disaster can indicate the quantities required for reconstruction, help garner a better understanding of the volumes of waste flows generated by that disaster, and also help in the course of policy deliberations in the recovery of disaster‐stricken areas. Calculations of the lost building and road materials in the five prefectures most affected were undertaken. Analysis in this study is based on the use of geographical information systems (GIS) databases and statistics; it aims to (1) describe in spatial terms what construction materials were lost, (2) estimate the amount of infrastructure material needed to rehabilitate disaster areas, and (3) indicate the amount of lost material stock that should be taken into consideration during government policy deliberations. Our analysis concludes that the material stock losses of buildings and road infrastructure are 31.8 and 2.1 million tonnes, respectively. This research approach and the use of spatial MSA can be useful for urban planners and may also convey more appropriate information about disposal based on the work of municipalities in disaster‐afflicted areas. 相似文献
85.
On a possible evolutionary link of the stomochord of hemichordates to pharyngeal organs of chordates 下载免费PDF全文
Noriyuki Satoh Kunifumi Tagawa Christopher J. Lowe Jr‐Kai Yu Takeshi Kawashima Hiroki Takahashi Michio Ogasawara Marc Kirschner Kanako Hisata Yi‐Hsien Su John Gerhart 《Genesis (New York, N.Y. : 2000)》2014,52(12):925-934
As a group closely related to chordates, hemichordate acorn worms are in a key phylogenic position for addressing hypotheses of chordate origins. The stomochord of acorn worms is an anterior outgrowth of the pharynx endoderm into the proboscis. In 1886 Bateson proposed homology of this organ to the chordate notochord, crowning this animal group “hemichordates.” Although this proposal has been debated for over a century, the question still remains unresolved. Here we review recent progress related to this question. First, the developmental mode of the stomochord completely differs from that of the notochord. Second, comparison of expression profiles of genes including Brachyury, a key regulator of notochord formation in chordates, does not support the stomochord/notochord homology. Third, FoxE that is expressed in the stomochord‐forming region in acorn worm juveniles is expressed in the club‐shaped gland and in the endostyle of amphioxus, in the endostyle of ascidians, and in the thyroid gland of vertebrates. Based on these findings, together with the anterior endodermal location of the stomochord, we propose that the stomochord has evolutionary relatedness to chordate organs deriving from the anterior pharynx rather than to the notochord. genesis 52:925–934, 2014. © 2014 Wiley Periodicals, Inc. 相似文献
86.
Shinya Fujii Hama Watanabe Hiroki Oohashi Masaya Hirashima Daichi Nozaki Gentaro Taga 《PloS one》2014,9(5)
Dancing and singing to music involve auditory-motor coordination and have been essential to our human culture since ancient times. Although scholars have been trying to understand the evolutionary and developmental origin of music, early human developmental manifestations of auditory-motor interactions in music have not been fully investigated. Here we report limb movements and vocalizations in three- to four-months-old infants while they listened to music and were in silence. In the group analysis, we found no significant increase in the amount of movement or in the relative power spectrum density around the musical tempo in the music condition compared to the silent condition. Intriguingly, however, there were two infants who demonstrated striking increases in the rhythmic movements via kicking or arm-waving around the musical tempo during listening to music. Monte-Carlo statistics with phase-randomized surrogate data revealed that the limb movements of these individuals were significantly synchronized to the musical beat. Moreover, we found a clear increase in the formant variability of vocalizations in the group during music perception. These results suggest that infants at this age are already primed with their bodies to interact with music via limb movements and vocalizations. 相似文献
87.
Hiroki Ishikawa Satoshi Ino Toshiko Yamochi Hiraku Sasaki Takahiro Kobayashi Chikara Kohda Masafumi Takimoto Kazuo Tanaka 《Biochemistry and Biophysics Reports》2020
Norovirus infection cause epidemic nonbacterial gastroenteritis in patients. The immune mechanisms responsible for the clearance of virus are not completely understood. We examined whether NKT cells are effective against norovirus infection using CD1d KO mice. The body weights of 4-weeks-old CD1d KO mice that were infected with murine norovirus-S7 (MNV-S7) were significantly lower than those of non-infected CD1d KO mice. On the other hand, the body weights of infected WT mice were comparable to those of non-infected WT mice. Correspondingly, CD1d KO mice had an almost 1000-fold higher MNV-S7 burden in the intestine after infection in comparison to WT mice. The mechanism responsible for the insufficient MNV-S7 clearance in CD1d KO mice was attributed to reduced IFN-γ production early during MNV-S7 infection. In addition, the markedly impaired IL-4 production in CD1d KO mice resulted in an impaired MNV-S7-specific secretory IgA production after MNV-S7 infection which is associated with mucosal immunity. Thus, the present results provide evidence that NKT cells play an essential role in MNV-S7 clearance. 相似文献
88.
Keiichi Hata Naohiro Kobayashi Keita Sugimura Weihua Qin Deis Haxholli Yoshie Chiba Sae Yoshimi Gosuke Hayashi Hiroki Onoda Takahisa Ikegami Christopher
B Mulholland Atsuya Nishiyama Makoto Nakanishi Heinrich Leonhardt Tsuyoshi Konuma Kyohei Arita 《Nucleic acids research》2022,50(21):12527
Ubiquitin-like with PHD and RING finger domain-containing protein 1 (UHRF1)-dependent DNA methylation is essential for maintaining cell fate during cell proliferation. Developmental pluripotency-associated 3 (DPPA3) is an intrinsically disordered protein that specifically interacts with UHRF1 and promotes passive DNA demethylation by inhibiting UHRF1 chromatin localization. However, the molecular basis of how DPPA3 interacts with and inhibits UHRF1 remains unclear. We aimed to determine the structure of the mouse UHRF1 plant homeodomain (PHD) complexed with DPPA3 using nuclear magnetic resonance. Induced α-helices in DPPA3 upon binding of UHRF1 PHD contribute to stable complex formation with multifaceted interactions, unlike canonical ligand proteins of the PHD domain. Mutations in the binding interface and unfolding of the DPPA3 helical structure inhibited binding to UHRF1 and its chromatin localization. Our results provide structural insights into the mechanism and specificity underlying the inhibition of UHRF1 by DPPA3. 相似文献
89.
Inhibition of RANKL‐dependent cellular fusion in pre‐osteoclasts by amiloride and a NHE10‐specific monoclonal antibody 下载免费PDF全文
90.
Murai H Qi H Choudhury B Wild J Dharajiya N Vaidya S Kalita A Bacsi A Corry D Kurosky A Brasier A Boldogh I Sur S 《PloS one》2012,7(2):e30280