keyword
MENU ▼
Read by QxMD icon Read
search

amine oxidase

keyword
https://www.readbyqxmd.com/read/28409494/association-between-metabolically-healthy-central-obesity-in-women-and-levels-of-soluble-receptor-for-advanced-glycation-end-products-soluble-vascular-adhesion-protein-1-and-the-activity-of-semicarbazide-sensitive-amine-oxidase
#1
Ivana Koborová, Radana Gurecká, Melinda Csongová, Katarína Volkovová, Éva Szökő, Tamás Tábi, Katarína Šebeková
AIM: To determine the levels of circulating soluble receptor for advanced glycation end products (sRAGE), as a biomarker of risk of metabolic syndrome and cardiovascular disease development in centrally obese (CO) women considered metabolically healthy (COH) in comparison with those metabolically unhealthy (COU). METHODS: 47 lean healthy, 17 COH (presenting waist-to-height ratio ≥0.5 but not elevated blood pressure, atherogenic lipid profile, and insulin resistance), and 50 COU (CO presenting ≥2 risk factors) women aged 40-45 years were included...
April 14, 2017: Croatian Medical Journal
https://www.readbyqxmd.com/read/28400155/histaminergic-gene-polymorphisms-associated-with-sedation-in-clozapine-treated-patients
#2
Anssi Solismaa, Olli Kampman, Leo-Pekka Lyytikäinen, Niko Seppälä, Merja Viikki, Nina Mononen, Terho Lehtimäki, Esa Leinonen
Sedation is a common adverse effect of clozapine treatment, which may be partly related to clozapine binding to histamine receptors in the central nervous system. The objective of this study was to investigate whether single nucleotide polymorphisms (SNPs) in the histaminergic system are associated with sedation in clozapine-treated patients. The study population comprised 237 clozapine-treated, Finnish, Caucasian patients that were diagnosed with schizophrenia and 176 were genotyped using Illumina HumanCoreExome-12 BeadChip...
April 8, 2017: European Neuropsychopharmacology: the Journal of the European College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28384389/a-bioinspired-organocatalytic-cascade-for-the-selective-oxidation-of-amines-under-air
#3
Martine Largeron, Maurice-Bernard Fleury
We describe a bioinspired organocatalytic cascade reaction for the selective aerobic oxidative cross-coupling of primary amines to imines. This approach takes advantages of commercially available pyrogallol monomeric precursor to deliver in situ, under air, low loadings of natural purpurogallin. This is further engaged in a catalytic process with the amine substrate affording under single turnover the active biomimetic quinonoid organocatalyst and the homocoupled imine intermediate which is then converted into cross-coupled imine after dynamic transimination...
April 6, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28383668/copper-amine-oxidase-8-regulates-arginine-dependent-nitric-oxide-production-in-arabidopsis-thaliana
#4
Felicitas Groß, Eva-Esther Rudolf, Björn Thiele, Jörg Durner, Jeremy Astier
Nitric oxide (NO) is a key signaling molecule in plants, regulating a wide range of physiological processes. However, its origin in plants remains unclear. It can be generated from nitrite through a reductive pathway, notably via the action of the nitrate reductase (NR), and evidence suggests an additional oxidative pathway, involving arginine. From an initial screen of potential Arabidopsis thaliana mutants impaired in NO production, we identified copper amine oxidase 8 (CuAO8). Two cuao8 mutant lines displayed a decreased NO production in seedlings after elicitor treatment and salt stress...
April 5, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28376620/bioresponsive-release-system-for-visual-fluorescence-detection-of-carcinoembryonic-antigen-from-mesoporous-silica-nanocontainers-mediated-optical-color-on-quantum-dot-enzyme-impregnated-paper
#5
Zhenli Qiu, Jian Shu, Dianping Tang
An all-in-one paper-based analytical device (PAD) was successfully developed for visual fluorescence detection of carcinoembryonic antigen (CEA) on CdTe/CdSe quantum dot (QD)-enzyme-impregnated paper by coupling with a bioresponsive controlled-release system from DNA-gated mesoporous silica nanocontainers (MSNs). The assay was carried out in a centrifuge tube by using glucose-loaded MSNs with a CEA aptamer and a QD-enzyme-paper attached on the lid. Initially, single-strand complementary DNA to a CEA aptamer was covalently conjugated to the aminated MSN, and then glucose (enzyme substrate) molecules were gated into the pore with the help of the aptamer...
April 12, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28374027/the-reaction-mechanism-of-sarcosine-oxidase-elucidated-using-fmo-and-qm-mm-methods
#6
Yukihiro Abe, Mitsuo Shoji, Yoshiaki Nishiya, Hiroshi Aiba, Takahide Kishimoto, Kazuo Kitaura
Monomeric sarcosine oxidase (MSOX) is a flavoprotein that oxidizes sarcosine to the corresponding imine product and is widely used in clinical diagnostics to test renal function. In the past decade, several experimental studies have been performed to elucidate the underlying mechanism of this oxidation reaction. However, the details of the molecular mechanism remain unknown. In this study, we theoretically examined three possible reaction mechanisms, namely, the single-electron transfer, hydride-transfer, and polar mechanisms, using the fragment molecular orbital (FMO) and mixed quantum mechanics/molecular mechanics (QM/MM) methods...
April 12, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28367269/spermidine-oxidation-mediated-degeneration-of-retinal-pigment-epithelium-in-rats
#7
Koji Ohashi, Masaaki Kageyama, Katsuhiko Shinomiya, Yukie Fujita-Koyama, Shin-Ichiro Hirai, Osamu Katsuta, Masatsugu Nakamura
Retinal pigment epithelium (RPE) degeneration is a crucial event in dry age-related macular degeneration and gyrate atrophy. The polyamine spermidine has been shown to induce RPE cell death in vitro. The present study aimed to establish a novel in vivo model of spermidine-induced RPE degeneration and to determine whether spermidine-induced RPE cell death involves oxidative mechanisms. In this study, spermidine caused ARPE-19 cell death in a concentration-dependent manner. This effect was prevented by removal of serum from the culture medium or treatment with amine oxidase inhibitors, N-acetylcysteine (NAC), or aldehyde dehydrogenase (ALDH)...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28362875/identification-and-validation-of-reference-genes-for-quantitative-real-time-pcr-studies-in-long-yellow-daylily-hemerocallis-citrina-borani
#8
Feifan Hou, Sen Li, Jinyao Wang, Xiuping Kang, Yiqun Weng, Guoming Xing
Gene expression analysis using reverse transcription quantitative real-time PCR (RT-qPCR) requires the use of reference gene(s) in the target species. The long yellow daylily, Hemerocallis citrina Baroni. is rich in beneficial secondary metabolites and is considered as a functional vegetable. It is widely cultivated and consumed in East Asian countries. However, reference genes for use in RT-qPCR in H. citrina are not available. In the present study, six potential reference genes, actin (ACT), AP-4 complex subunit (AP4), tubulin (TUB), ubiquitin (UBQ), 18S and 60S ribosomal RNA, were selected and their expression stability in different developmental stages, organs and accessions was evaluated using four statistical software packages (geNorm, NormFinder, BestKeeper, and RefFinder)...
2017: PloS One
https://www.readbyqxmd.com/read/28355481/mechanistic-studies-of-an-amine-oxidase-derived-from-d-amino-acid-oxidase
#9
Elizabeth E Trimmer, Udayanga S Wanninayake, Paul F Fitzpatrick
The flavoprotein d-amino acid oxidase has long served as a paradigm for understanding the mechanism of oxidation of amino acids by flavoproteins. Recently, a mutant d-amino acid oxidase (Y228L/R283G) that catalyzed the oxidation of amines rather than amino acids was described [Yasukawa, K., et al. (2014) Angew. Chem., Int. Ed. 53, 4428-4431]. We describe here the use of pH and kinetic isotope effects with (R)-α-methylbenzylamine as a substrate to determine whether the mutant enzyme utilizes the same catalytic mechanism as the wild-type enzyme...
April 11, 2017: Biochemistry
https://www.readbyqxmd.com/read/28350101/loxl3-sv2-a-novel-variant-of-human-lysyl-oxidase-like-3-loxl3-functions-as-an-amine-oxidase
#10
Chankyu Jeong, Youngho Kim
Human lysyl oxidase-like 3 (LOXL3) functions as a copper-dependent amine oxidase toward collagen and elastin. The LOXL3 protein contains four scavenger receptor cysteine-rich (SRCR) domains in the N-terminus in addition to the C-terminal characteristic domains of the lysyl oxidase (LOX) family, such as a copper-binding domain, a cytokine receptor‑like domain and residues for the lysyl-tyrosyl quinone cofactor. Using BLASTN searches, we identified a novel variant of LOXL3 (termed LOXL3-sv2), which lacked the sequences corresponding to exons 4 and 5 of LOXL3...
January 19, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28315108/osmolytic-effect-of-sucrose-on-thermal-denaturation-of-pea-seedling-copper-amine-oxidase
#11
Mojtaba Amani, Aboozar Barzegar, Mohammad Mazani
Protein stability is a subject of interest by many researchers. One of the common methods to increase the protein stability is using the osmolytes. Many studies and theories analyzed and explained osmolytic effect by equilibrium thermodynamic while most proteins undergo an irreversible denaturation. In current study we investigated the effect of sucrose as an osmolyte on the thermal denaturation of pea seedlings amine oxidase by the enzyme activity, fluorescence spectroscopy, circular dichroism, and differential scanning calorimetry...
March 18, 2017: Protein Journal
https://www.readbyqxmd.com/read/28285348/n-adamantyl-4-methylthiazol-2-amine-attenuates-glutamate-induced-oxidative-stress-and-inflammation-in-the-brain
#12
Seung-Ju Yang, Eun-A Kim, Min-Jun Chang, Jiae Kim, Jung-Min Na, Soo Young Choi, Sung-Woo Cho
In this study, we explored the possible mechanisms underlying the neuroprotective and anti-oxidative effects of N-adamantyl-4-methylthiazol-2-amine (KHG26693) against in vivo glutamate-induced toxicity in the rat cerebral cortex. Our results showed that pretreatment with KHG26693 significantly attenuated glutamate-induced elevation of lipid peroxidation, tumor necrosis factor-α, interferon gamma, IFN-γ, interleukin-1β, nitric oxide, reactive oxygen species, NADPH oxidase, caspase-3, calpain activity, and Bax...
March 11, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28273563/discovery-of-highly-selective-and-potent-monoamine-oxidase-b-inhibitors-contribution-of-additional-phenyl-rings-introduced-into%C3%A2-2-aryl-1-3-4-oxadiazin-5-6h-one
#13
Jungeun Lee, Yeongcheol Lee, So Jung Park, Joohee Lee, Yeong Shik Kim, Young-Ger Suh, Jeeyeon Lee
Monoamine oxidase B (MAO-B) is a flavin adenine dinucleotide (FAD)-containing enzyme that plays a major role in the oxidative deamination of biogenic amines and neurotransmitters. Inhibiting MAO-B activity is a promising approach in the treatment of neurological disorders. Here, we report a series of 2-aryl-1,3,4-oxadiazin-5(6H)-one derivatives as highly selective and potent MAO-B inhibitors. Analysis of the binding sites of hMAO-A and hMAO-B led to design of linear analogs of 2-aryl-1,3,4-oxadiazin-5(6H)-one with an additional phenyl ring...
April 21, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28267667/smartphone-based-enzymatic-biosensor-for-oral-fluid-l-lactate-detection-in-one-minute-using-confined-multilayer-paper-reflectometry
#14
Donato Calabria, Cristiana Caliceti, Martina Zangheri, Mara Mirasoli, Patrizia Simoni, Aldo Roda
The development of smartphone-based biosensors for point-of-care testing (POCT) applications allows realizing "all in one" instruments, with large potential distribution among the general population. With this respect, paper color-based detection performed by reflectance measurement is the most popular, simple, inexpensive and straightforward method. Despite the large number of scientific publications related to these biosensors, they still suffer from a poor detectability and reproducibility related to inhomogeneity of color development, which leads to low assay reproducibility...
March 1, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28251930/amine-oxidase-activity-regulates-the-development-of-pulmonary-fibrosis
#15
Fumiko Marttila-Ichihara, Kati Elima, Kaisa Auvinen, Tibor Z Veres, Pia Rantakari, Christopher Weston, Masayuki Miyasaka, David Adams, Sirpa Jalkanen, Marko Salmi
In pulmonary fibrosis, an inflammatory reaction and differentiation of myofibroblasts culminate in pathologic deposition of collagen. Amine oxidase copper containing-3 (AOC3) is a cell-surface expressed oxidase that regulates leukocyte extravasation. Here we analyzed the potential role of AOC3 using gene-modified and inhibitor-treated mice in a bleomycin-induced pulmonary fibrosis model. Inflammation and fibrosis of lungs were assessed by histologic, flow cytometric, and quantitative PCR analysis. AOC3-deficient mice showed a 30-50% reduction in fibrosis, collagen synthesis, numbers of myofibroblasts, and accumulation of CD4(+) lymphocytes, NK T cells, macrophages, and type 2 innate lymphoid cells compared with wild-type control mice...
March 1, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28228728/perivascular-adipose-tissue-s-impact-on-norepinephrine-induced-contraction-of-mesenteric-resistance-arteries
#16
Nadia Ayala-Lopez, Janice M Thompson, Stephanie W Watts
Background: Perivascular adipose tissue (PVAT) can decrease vascular contraction to NE. We tested the hypothesis that metabolism and/or uptake of vasoactive amines by mesenteric PVAT (MPVAT) could affect NE-induced contraction of the mesenteric resistance arteries. Methods: Mesenteric resistance vessels (MRV) and MPVAT from male Sprague-Dawley rats were used. RT-PCR and Western blots were performed to detect amine metabolizing enzymes. The Amplex® Red Assay was used to quantify oxidase activity by detecting the oxidase reaction product H2O2 and the contribution of PVAT on the mesenteric arteries' contraction to NE was measured by myography...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28199967/pre-clinical-evaluation-of-small-molecule-loxl2-inhibitors-in-breast-cancer
#17
Joan Chang, Morghan C Lucas, Lidia E Leonte, Marc Garcia-Montolio, Lukram Babloo Singh, Alison D Findlay, Mandar Deodhar, Jonathan S Foot, Wolfgang Jarolimek, Paul Timpson, Janine T Erler, Thomas R Cox
Lysyl Oxidase-like 2 (LOXL2), a member of the lysyl oxidase family of amine oxidases is known to be important in normal tissue development and homeostasis, as well as the onset and progression of solid tumors. Here we tested the anti-tumor properties of two generations of novel small molecule LOXL2 inhibitor in the MDA-MB-231 human model of breast cancer. We confirmed a functional role for LOXL2 activity in the progression of primary breast cancer. Inhibition of LOXL2 activity inhibited the growth of primary tumors and reduced primary tumor angiogenesis...
February 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28112368/loxl3-sv2-a-novel-variant-of-human-lysyl-oxidase-like-3-loxl3-functions-as-an-amine-oxidase
#18
Chankyu Jeong, Youngho Kim
Human lysyl oxidase-like 3 (LOXL3) functions as a copper-dependent amine oxidase toward collagen and elastin. The LOXL3 protein contains four scavenger receptor cysteine-rich (SRCR) domains in the N-terminus in addition to the C-terminal characteristic domains of the lysyl oxidase (LOX) family, such as a copper-binding domain, a cytokine receptor‑like domain and residues for the lysyl-tyrosyl quinone cofactor. Using BLASTN searches, we identified a novel variant of LOXL3 (termed LOXL3-sv2), which lacked the sequences corresponding to exons 4 and 5 of LOXL3...
March 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28111769/suitability-of-combination-of-calcium-propionate-and-chitosan-for-preserving-minimally-processed-banana-quality
#19
Amin Mirshekari, Babak Madani, John B Golding
BACKGROUND: Marketability of fresh-cut banana slices is limited by the rapid rate of fruit softening and browning. However there is no scientific literature on the role of postharvest calcium propionate and chitosan treatment on quality attributes of fresh cut banana and therefore the aim of this research was to investigate these effects. RESULTS: This study showed that the application of calcium propionate plus chitosan (CaP+Chit) treatment retained higher firmness, ascorbic acid content (AA) content, total antioxidant activity (TAA) and total phenolic compounds (TPC) with lower browning, polyphenol oxidase (PPO), peroxidase (POD), polygalacturonase (PG) and pectin methyl esterase (PME) activities and microbial growth compared with the control banana slices after five days of cold storage...
January 23, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28110559/comparing-hydrazine-derived-reactive-groups-as-inhibitors-of-quinone-dependent-amine-oxidases
#20
COMPARATIVE STUDY
Ashley A Burke, Elizabeth S Severson, Shreya Mool, Maria J Solares Bucaro, Frederick T Greenaway, Charles E Jakobsche
Lysyl oxidase has emerged as an important enzyme in cancer metastasis. Its activity has been reported to become upregulated in several types of cancer, and blocking its activity has been shown to limit the metastatic potential of various cancers. The small-molecules phenylhydrazine and β-aminopropionitrile are known to inhibit lysyl oxidase; however, issues of stability, toxicity, and poorly defined mechanisms limit their potential use in medical applications. The experiments presented herein evaluate three other families of hydrazine-derived compounds - hydrazides, alkyl hydrazines, and semicarbazides - as irreversible inhibitors of lysyl oxidase including determining the kinetic parameters and comparing the inhibition selectivities for lysyl oxidase against the topaquinone-containing diamine oxidase from lentil seedlings...
December 2017: Journal of Enzyme Inhibition and Medicinal Chemistry
keyword
keyword
88194
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"