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Yamada M, Matsumura M, Sakaki E, Yen SY, Kawahata M, Hyodo T, Yamaguchi K, Murata Y, Yasuike S. Copper-catalyzed three-component reaction of ethynylstibanes, organic azides, and selenium: A simple and efficient synthesis of novel selenides and diselenides having 1,2,3-triazole rings. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Yasuike S, Kanasaki K, Murata Y, Kondo K, Kakusawa N, Matsumura M. Visible-Light-Promoted Se-Arylation of Diaryl Diselenides with 2-Phenylimidazopyridines in the Presence of Ammonium Iodide: Synthesis of 2-Phenyl-3-(arylselanyl)imidazo[1,2-α]pyridines. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kitamura Y, Murata Y, Oguri A, Matsumura M, Kakusawa N, Naka H, Yasuike S. Pd‐Catalyzed β‐Selective C−H Arylation of Thiophenes with Triarylantimony Difluorides. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800654] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Yamada M, Matsuura D, Hasegawa M, Murata Y, Kakusawa N, Matsumura M, Yasuike S. Copper-catalyzed cross-coupling reactions of 5-stibano-1,2,3-triazoles with bromoalkynes under aerobic conditions: Synthesis of 5-alkynyl-1,2,3-triazoles. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Matsumura M, Mizutani E, Suzuki T, Tsurumi H, Uni R, Higashihara T, Nakahara K, Takano H. Successful Diagnosis and Treatment of Peritoneal Dialysis-Related Pleuroperitoneal Communication by Contrast-Enhanced Ultrasonography and Thoracoscopic Surgery. Perit Dial Int 2018; 37:485-486. [PMID: 28676518 DOI: 10.3747/pdi.2016.00295] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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Hashimoto A, Hirayama K, Takahashi H, Matsumura M, Okada G, Chen C, Huang J, Kakishima M, Ono T, Tanaka K. Resolving the Lophiostoma bipolare complex: Generic delimitations within Lophiostomataceae. Stud Mycol 2018; 90:161-189. [PMID: 29632417 PMCID: PMC5889712 DOI: 10.1016/j.simyco.2018.03.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Lophiostoma bipolare was taxonomically revised based on the morphological observations and phylogenetic analyses of molecular data from nuclear rDNA SSU-ITS-LSU, TUB, tef1, and rpb2 genes. Twenty-nine strains were morphologically similar to Lo. bipolare. A total of 174 sequences were generated from the Lo. bipolare complex. Phylogenetic analyses based on TUB sequence revealed 11 distinct species within the Lo. bipolare complex. Morphological features of the ascospores and the anatomical structure of the ascomata from both field collections as well as axenic culture, which have been reported previously as variable features at intraspecific levels, were compared to evaluate the taxonomic reliability of these features. To clarify the generic position of the 11 species, phylogenetic analyses were done on SSU-ITS-LSU-tef1-rpb2 gene sequences. The Lo. bipolare complex shared phylogenetic relationships with Pseudolophiostoma and Vaginatispora, and formed an additional five distinct clades from other members of Lophiostomataceae. According to its phylogenetic position, Lo. bipolare sensu stricto was distantly related to Lophiostoma s. str., and formed an independent clade within Lophiostomataceae. Lophiostoma bipolare s. str. could be distinguished from the other lophiostomataceous genera by the clypeus around the ostiolar neck and by the thin and uniformly thick peridium. A novel genus described as Lentistoma was established to accommodate this species, and the epitypification of Lentistoma bipolare (basionym: Massarina bipolaris) was proposed. Other lineages of the Lo. bipolare complex could not be separated on the basis of the ascospore size and sheath variations, but were distinguished based on ascomatal features, such as the existence of the clypeus, brown hyphae surrounding the peridium, and the contexture of the peridium, which were stable indicators of generic boundaries in Lophiostomataceae. Four additional new genera with five new species were recognised based on these morphological differences: Crassiclypeus (C. aquaticus), Flabellascoma (F. cycadicola and F. minimum), Leptoparies (Lep. palmarum), and Pseudopaucispora (Pseudop. brunneospora). Three new species were added to Pseudolophiostoma (Pseudol. cornisporum, Pseudol. obtusisporum, and Pseudol. tropicum) and two new species were added to Vaginatispora (V. amygdali and V. scabrispora). The re-evaluation of the validity of several previously recognised genera resulted in the introduction of two new genera with new combinations for Lophiostoma pseudoarmatisporum as Parapaucispora pseudoarmatispora and Vaginatispora fuckelii as Neovaginatispora fuckelii.
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Key Words
- 1 new typification
- 21 new taxa
- Crassiclypeus A. Hashim., K. Hiray. & Kaz. Tanaka
- Crassiclypeus aquaticus A. Hashim., K. Hiray. & Kaz. Tanaka
- Flabellascoma A. Hashim., K. Hiray. & Kaz. Tanaka
- Flabellascoma cycadicola A. Hashim., K. Hiray. & Kaz. Tanaka
- Flabellascoma minimum A. Hashim., K. Hiray. & Kaz. Tanaka
- Freshwater fungi
- Lentistoma A. Hashim., K. Hiray. & Kaz. Tanaka
- Lentistoma bipolare (K.D. Hyde) A. Hashim., K. Hiray. & Kaz. Tanaka
- Leptoparies A. Hashim., K. Hiray. & Kaz. Tanaka
- Leptoparies palmarum A. Hashim., K. Hiray. & Kaz. Tanaka
- Massarina bipolaris K.D. Hyde
- Neovaginatispora A. Hashim., K. Hiray. & Kaz. Tanaka
- Neovaginatispora fuckelii (Sacc.) A. Hashim., K. Hiray. & Kaz. Tanaka
- Parapaucispora A. Hashim., K. Hiray. & Kaz. Tanaka
- Parapaucispora pseudoarmatispora (Hay. Takah. et al.) A. Hashim., K. Hiray. & Kaz. Tanaka
- Pleosporales
- Pseudolophiostoma cornisporum A. Hashim., K. Hiray. & Kaz. Tanaka
- Pseudolophiostoma obtusisporum A. Hashim., K. Hiray. & Kaz. Tanaka
- Pseudolophiostoma tropicum A. Hashim., K. Hiray. & Kaz. Tanaka
- Pseudopaucispora A. Hashim., K. Hiray. & Kaz. Tanaka
- Pseudopaucispora brunneospora A. Hashim., K. Hiray. & Kaz. Tanaka
- Species complex
- Systematics
- Taxonomy
- Vaginatispora amygdali A. Hashim., K. Hiray. & Kaz. Tanaka
- Vaginatispora scabrispora A. Hashim., K. Hiray. & Kaz. Tanaka
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Matsumura M, Yasuike S, Kondo K, Kanasaki K, Murata Y, Kakusawa N. Synthesis of 2-Aryl-3-(arylselanyl)imidazo[1,2-a]pyridines: Copper-Catalyzed One-Pot, Two-Step Se-Arylation of Selenium with Imidazopyridines and Triarylbismuthanes. SYNTHESIS-STUTTGART 2018. [DOI: 10.1055/s-0036-1591972] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A simple and general method for the synthesis of 2-aryl-3-(arylselanyl)imidazo[1,2-a]pyridines is described. A one-pot, two-step reaction between triarylbismuthanes and diimidazopyridyl diselenides, generated from imidazo[1,2-a]pyridines and Se powder in the presence of CuI and 1,10-phenanthroline, affords 3-selanylimidazopyridines in moderate to excellent yields under aerobic conditions. The reactions proceed efficiently and the selenium and all the aryl groups on bismuth are transferred to the coupling products. Triarylbismuthanes give better results compared to other aryl donors containing elements such as boron, silicon, tin, and iodine.
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Murata Y, Matsumoto N, Miyata M, Kitamura Y, Kakusawa N, Matsumura M, Yasuike S. One-pot reaction for the synthesis of N -substituted 2-aminobenzoxazoles using triphenylbismuth dichloride as cyclodesulfurization reagent. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.01.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Yamada M, Matsumura M, Takino F, Murata Y, Kurata Y, Kawahata M, Yamaguchi K, Kakusawa N, Yasuike S. Synthesis of Fully Functionalized 5-Selanyl-1,2,3-triazoles: Copper-Catalysed Three-Component Reaction of Ethynylstibanes, Organic Azides, and Diaryl Diselenides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Yamada M, Matsumura M, Takino F, Murata Y, Kurata Y, Kawahata M, Yamaguchi K, Kakusawa N, Yasuike S. Synthesis of Fully Functionalized 5-Selanyl-1,2,3-triazoles: Copper-Catalysed Three-Component Reaction of Ethynylstibanes, Organic Azides, and Diaryl Diselenides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701389] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Matsumura M. Crassiperidium (Pleosporales, Dothideomycetes), a new ascomycetous genus parasitic on Fagus crenata in Japan. MYCOSPHERE 2018. [DOI: 10.5943/mycosphere/9/6/13] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Yamada M, Takahashi T, Hasegawa M, Matsumura M, Ono K, Fujimoto R, Kitamura Y, Murata Y, Kakusawa N, Tanaka M, Obata T, Fujiwara Y, Yasuike S. Synthesis, antitumor activity, and cytotoxicity of 4-substituted 1-benzyl-5-diphenylstibano-1H-1,2,3-triazoles. Bioorg Med Chem Lett 2018; 28:152-154. [DOI: 10.1016/j.bmcl.2017.11.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 11/22/2017] [Accepted: 11/23/2017] [Indexed: 12/25/2022]
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Murata Y, Sugawara Y, Matsumura M, Kakusawa N, Yasuike S. Microwave-Assisted Debromination of α-Bromoketones with Triarylstibanes in Water. Chem Pharm Bull (Tokyo) 2017; 65:1081-1084. [PMID: 29093295 DOI: 10.1248/cpb.c17-00533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Several α-bromoarylketones were reacted with triarylstibanes under microwave irradiation in water to obtain the corresponding debrominated ketones. Under similar reaction conditions, 1,2-elimination of vic-dibromides in water afforded the corresponding E-olefins. This reaction is the first example of organoantimony compounds utilized for organic transformation in water.
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Matsumura M, Yamada M, Muranaka A, Kanai M, Kakusawa N, Hashizume D, Uchiyama M, Yasuike S. Synthesis and photophysical properties of novel benzophospholo[3,2- b]indole derivatives. Beilstein J Org Chem 2017; 13:2304-2309. [PMID: 29181109 PMCID: PMC5687007 DOI: 10.3762/bjoc.13.226] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 10/04/2017] [Indexed: 11/23/2022] Open
Abstract
The parent benzophospholo[3,2-b]indole was prepared by the reaction of dichlorophenylphosphine with a dilithium intermediate, which was prepared in two steps from 2-ethynyl-N,N-dimethylaniline. Using the obtained benzophosphole-fused indole as a common starting material, simple modifications were carried out at the phosphorus center of the phosphole, synthesizing various functionalized analogs. The X-ray structure analysis of trivalent phosphole and phosphine oxide showed that the fused tetracyclic moieties are planar. The benzophosphole-fused indoles, such as phosphine oxide, phospholium salt, and borane complex, exhibited strong photoluminescence in dichloromethane (Φ = 67–75%).
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Matsumura M. The influence of the health condition of the caregiver the care environment and the prognosis of patients with Alzheimer’s disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hashimoto A, Matsumura M, Hirayama K, Fujimoto R, Tanaka K. Pseudodidymellaceae fam. nov.: Phylogenetic affiliations of mycopappus-like genera in Dothideomycetes. Stud Mycol 2017; 87:187-206. [PMID: 28794574 PMCID: PMC5542424 DOI: 10.1016/j.simyco.2017.07.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The familial placement of four genera, Mycodidymella, Petrakia, Pseudodidymella, and Xenostigmina, was taxonomically revised based on morphological observations and phylogenetic analyses of nuclear rDNA SSU, LSU, tef1, and rpb2 sequences. ITS sequences were also provided as barcode markers. A total of 130 sequences were newly obtained from 28 isolates which are phylogenetically related to Melanommataceae (Pleosporales, Dothideomycetes) and its relatives. Phylogenetic analyses and morphological observation of sexual and asexual morphs led to the conclusion that Melanommataceae should be restricted to its type genus Melanomma, which is characterised by ascomata composed of a well-developed, carbonaceous peridium, and an aposphaeria-like coelomycetous asexual morph. Although Mycodidymella, Petrakia, Pseudodidymella, and Xenostigmina are phylogenetically related to Melanommataceae, these genera are characterised by epiphyllous, lenticular ascomata with well-developed basal stroma in their sexual morphs, and mycopappus-like propagules in their asexual morphs, which are clearly different from those of Melanomma. Pseudodidymellaceae is proposed to accommodate these four genera. Although Mycodidymella and Xenostigmina have been considered synonyms of Petrakia based on sexual morphology, we show that they are distinct genera. Based on morphological observations, these genera in Pseudodidymellaceae are easily distinguished by their synasexual morphs: sigmoid, multi-septate, thin-walled, hyaline conidia (Mycodidymella); globose to ovoid, dictyosporus, thick-walled, brown conidia with cellular appendages (Petrakia); and clavate with a short rostrum, dictyosporus, thick-walled, brown conidia (Xenostigmina). A synasexual morph of Pseudodidymella was not observed. Although Alpinaria was treated as member of Melanommataceae in a previous study, it has hyaline cells at the base of ascomata and pseudopycnidial, confluent conidiomata which is atypical features in Melanommataceae, and is treated as incertae sedis.
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Kitamura Y, Matsumura M, Murata Y, Yamada M, Kakusawa N, Tanaka M, Okabe H, Naka H, Obata T, Yasuike S. A versatile synthesis of triarylantimony difluorides by fluorination of triarylstibanes with nitrosyl tetrafluoroborate and their antitumor activity. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Nakatani Y, Maeda M, Matsumura M, Shimizu R, Banba N, Aso Y, Yasu T, Harasawa H. Effect of GLP-1 receptor agonist on gastrointestinal tract motility and residue rates as evaluated by capsule endoscopy. DIABETES & METABOLISM 2017. [PMID: 28648835 DOI: 10.1016/j.diabet.2017.05.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
AIM This study evaluated the effects of a glucagon-like peptide-1 receptor agonist on gastrointestinal (GI) tract motility and residue rates by examining GI transit time and lumen using capsule endoscopy. MATERIAL AND METHODS GI motility and lumen were assessed by capsule endoscopy before and after liraglutide administration in 14 patients with type 2 diabetes mellitus (T2DM). RESULTS Gastric transit time in the group with diabetic neuropathy (DN) was 1:12:36±1:04:30h before liraglutide administration and 0:48:40±0:32:52h after administration (nonsignificant difference, P=0.19). Gastric transit time in the non-DN group was 1:01:30±0:52:59h before administration and 2:33:29±1:37:24h after administration (significant increase, P=0.03). Duodenal and small intestine transit time in the DN group was 4:10:34±0:25:54h before and 6:38:42±3:52:42h after administration (not significant, P=0.09) and, in the non-DN group, 3:51:03±0:53:47h before and 6:45:31±2:41:36h after administration (significant increase, P=0.03). The GI residue rate in the DN group was 32.1±24% before administration and 90.0±9.1% after administration (significant increase, P<0.001), and increased in all patients; in the non-DN group, it was 32.1±35.3% before and 78.3±23.9% after administration (significant increase, P<0.001), and also increased in all patients. CONCLUSION Liraglutide causes delayed gastric emptying and inhibits duodenal and small intestine motility. However, these GI movement-inhibiting effects may be decreased or absent in patients with DN-associated dysautonomia.
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Matsumura M, Muranaka A, Kurihara R, Kanai M, Yoshida K, Kakusawa N, Hashizume D, Uchiyama M, Yasuike S. General synthesis, structure, and optical properties of benzothiophene-fused benzoheteroles containing Group 15 and 16 elements. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.10.048] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Yamada M, Matsumura M, Uchida Y, Kawahata M, Murata Y, Kakusawa N, Yamaguchi K, Yasuike S. Copper-catalyzed [3 + 2] cycloaddition of (phenylethynyl)di-p-tolylstibane with organic azides. Beilstein J Org Chem 2016; 12:1309-13. [PMID: 27559379 PMCID: PMC4979910 DOI: 10.3762/bjoc.12.123] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Accepted: 06/03/2016] [Indexed: 11/23/2022] Open
Abstract
Trisubstituted 5-stibano-1H-1,2,3-triazoles were synthesized in moderate to excellent yields by the Cu-catalyzed [3 + 2] cycloaddition of a ethynylstibane with organic azides in the presence of CuBr (5 mol %) under aerobic conditions. The reaction of 5-stibanotriazole with HCl, I2, and NOBF4 afforded 1-benzyl-4-phenyltriazole, 1-benzyl-5-iodo-4-phenyltriazole, and a pentavalent organoantimony compound, respectively.
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Andrews J, Nguyen T, Janssan A, Vidanapathirana A, Pullen B, Schwarz N, Maehara A, Matsumura M, Yamamoto M, Kini A, Shah P, Muller J, Stone G, Mintz G, Weisz G, Nicholls S. Increased Lipid-Rich Plaque but not Greater Plaque Burden in Myocardial Infarction Lesions: The Color Registry. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Nguyen T, Andrews J, Janssan A, Vidanapathirana A, Pullen B, Schwarz N, Weisz G, Matsumura M, Yamamoto M, Kini A, Shah P, Muller J, Mintz G, Stone G, Maehara A, Nicholls S. Plaque Characterisation Informs the Risk of Peri-MI During PCI: The COLOR Registry. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Janssan A, Andrews J, Nguyen T, Vidanapathirana A, Pullen B, Schwarz N, Maehara A, Matsumura M, Yamamoto M, Kini A, Shah P, Muller J, Stone G, Mintz G, Weisz G, Nicholls S. Lower Plaque Lipid Content on Near-Infrared Spectroscopy in Statin-Treated Patients: Insights from the Color Registry. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Terada T, Matsumura M, Abe A, Morita Y, Adachi H, Nanjo H. Irreversible inactivation of glutathione S-transferase-π by a low concentration of naphthoquinones. Redox Rep 2016; 1:125-30. [PMID: 27405555 DOI: 10.1080/13510002.1995.11746970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
π-Class glutathione S-transferase (GST-π) was very potently inactivated by oxidants such as H2O2, xanthine-xanthine oxidase and naphthoquinones. Thiols and glutathione analogs including dithiothreitol, reduced gluta-thione, cysteine, cysteamine, S-methyl-SG, S-hexyl-SG and S-decyl-SG protected GST-π from the inactivation, but a substrate analog (2,4-dinitrophenol), superoxide dismutase and catalase did not, suggesting that the cysteinyl residue(s) in/nearby the glutathione binding site (G-site) may be oxidatively modified by these oxidants. Many reductants and radical scavengers including butylated hydoxytoluene, α-tocopherol, ascorbate, uric acid, mannitol, tyrosine, tryptophan, histidine, quercitrin and bilirubin had no effect on the inactivation. GST-π pretreated with cystamine was reactivated very efficiently by 50 mM DTT following incubation with 1,2-naphthoquinone, whereas cystamine-untreated GST-π was not reactivated.
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Obata T, Matsumura M, Kawahata M, Hoshino S, Yamada M, Murata Y, Kakusawa N, Yamaguchi K, Tanaka M, Yasuike S. Synthesis, structural characterization and antitumor activity of 2-(di-p-tolylstibano)- and 2-(di-p-tolylbismuthano)-N-p-tolylbenzamide. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.02.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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