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https://www.readbyqxmd.com/read/28629829/morphological-variability-and-molecular-characterization-of-pomphorhynchus-zhoushanensis-sp-nov-acanthocephala-pomphorhynchidae-with-comments-on-the-systematic-status-of-pomphorhynchus-monticelli-1905
#1
Liang Li, Hui-Xia Chen, Omar M Amin, Yue Yang
Species of Pomphorhynchus Monticelli, 1905 commonly parasitize the digestive tract of freshwater fishes, and rarely occur in marine fishes and amphibians. In the present study, Pomphorhynchus zhoushanensis sp. nov., collected from the barred knifejaw Oplegnathus fasciatus (Temminck & Schlegel) (Perciformes: Oplegnathidae) in the East China Sea, was described using integrated approaches, including light and scanning electron microscopy, and the sequencing and analysing of ribosomal [small ribosomal DNA (18S) and internal transcribed spacer (ITS)] and mitochondrial [cytochrome c oxidase subunit 1 (cox1)] target regions...
June 16, 2017: Parasitology International
https://www.readbyqxmd.com/read/28627649/hypoxia-serves-a-key-function-in-the-upregulated-expression-of-vascular-adhesion-protein%C3%A2-1-in%C3%A2-vitro-and-in-a-rat-model-of-hemorrhagic-shock
#2
Yuxing Zhang, Wei Yi, Jun Yao, Xiaojun Yu, Cheng Qian, Zhiqian Hu
Hemorrhagic shock following major trauma results in mortality, but the function of vascular adhesion protein‑1 (VAP‑1), implicated in intracranial hemorrhage, remains unknown. This study aimed to determine whether expression of the AOC3 gene and its encoded protein, VAP‑1, is altered by hypoxia. Rat hepatic sinusoidal endothelial cells (RHSECs) and rat intestinal microvascular endothelial cells (RIMECs) were transduced with a viral vector carrying AOC3, and AOC3 mRNA expression levels were measured by reverse transcription‑quantitative polymerase chain reaction...
June 8, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28624934/low-serum-diamine-oxidase-dao-activity-levels-in-patients-with-migraine
#3
Joan Izquierdo-Casas, Oriol Comas-Basté, M Luz Latorre-Moratalla, Marian Lorente-Gascón, Adriana Duelo, M Carmen Vidal-Carou, Luis Soler-Singla
Histamine intolerance is a disorder in the homeostasis of histamine due to a reduced intestinal degradation of this amine, mainly caused by a deficiency in the enzyme diamine oxidase (DAO). Among the several multi-faced symptoms associated with histamine intolerance, headache is one of the most recognized and disabling consequences. The aim of this study was to determine the prevalence of DAO deficiency in patients with a confirmed migraine diagnosis according to the current International Headache Society (IHS) and in non-migraine subjects...
June 17, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28584293/expression-and-functional-analysis-of-the-lysine-decarboxylase-and-copper-amine-oxidase-genes-from-the-endophytic-fungus-colletotrichum-gloeosporioides-es026
#4
Xiangmei Zhang, Zhangqian Wang, Saad Jan, Qian Yang, Mo Wang
Huperzine A (HupA) isolated from Huperzia serrata is an important compound used to treat Alzheimer's disease (AD). Recently, HupA was reported in various endophytic fungi, with Colletotrichum gloeosporioides ES026 previously isolated from H. serrata shown to produce HupA. In this study, we performed next-generation sequencing and de novo RNA sequencing of C. gloeosporioides ES026 to elucidate the molecular functions, biological processes, and biochemical pathways of these unique sequences. Gene ontology and Kyoto Encyclopedia of Genes and Genomes assignments allowed annotation of lysine decarboxylase (LDC) and copper amine oxidase (CAO) for their conversion of L-lysine to 5-aminopentanal during HupA biosynthesis...
June 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28568134/lysyl-oxidase-mediated-vegf-induced-differentiation-and-angiogenesis-in-human-dental-pulp-cells
#5
W J Bae, J K Yi, J Park, S K Kang, J H Jang, E C Kim
AIM: To investigate the effects of recombinant human vascular endothelial growth factor (rhVEGF) on odontoblastic differentiation, in vitro angiogenesis, and expression and activity of lysyl oxidase (LOX) in human dental pulp cells (HDPCs), compared with rhFGF-2. To identify the underlying molecular mechanisms, the study focused on whether LOX was responsible for the actions of rhVEGF. METHODOLOGY: rhVEGF was constructed using the pBAD-HisA plasmid in Escherichia coli...
June 1, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28566493/urinary-amine-sampling-for-tumour-detection-revisiting-the-recommendations
#6
Jean-Benoit Corcuff, Laurence Chardon, Ines El Hajji Ridah, Julie Brossaud
Context Biogenic amines such as 5-hydroxy-indole acetic acid (5HIAA), the main metabolite of serotonin or metanephrines, catecholamines metabolites, are used as biomarkers of neuroendocrine tumours Objective To re-evaluate the recommendations for urinary sampling (preservatives, diet, drugs, …) as many of the reported analytical interferences supporting these recommendations are related to obsolete assays. Methods Bibliographic analysis of old and modern amine assays concerning preservation, extraction, assay and interferences...
May 31, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28554652/development-of-new-chemiluminescence-biosensors-for-determination-of-biogenic-amines-in-meat
#7
Enisa Omanovic-Miklicanin, Sandro Valzacchi
Development of chemiluminescence one-shot biosensors for determination of biogenic amines is described and compared with high-performance liquid chromatography (HPLC) method coupled with pre-column derivatisation. The biosensors are based on enzymatic oxidation to 4-aminobutyraldehyde with putrescine oxidase or diamine oxidase as catalysts. The lowest measured concentration for the biosensor with putrescine oxidase was 1mg/L. The detection limit, calculated as 3σ value, was 0.8mg/L. The biosensor with diamine oxidase had the lowest measured concentration of 1mg/L of putrescine...
November 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28533961/transcriptome-analyses-provide-insights-into-the-difference-of-alkaloids-biosynthesis-in-the-chinese-goldthread-coptis-chinensis-franch-from-different-biotopes
#8
Hanting Chen, Cao Deng, Hu Nie, Gang Fan, Yang He
Coptis chinensis Franch., the Chinese goldthread ('Weilian' in Chinese), one of the most important medicinal plants from the family Ranunculaceae, and its rhizome has been widely used in Traditional Chinese Medicine for centuries. Here, we analyzed the chemical components and the transcriptome of the Chinese goldthread from three biotopes, including Zhenping, Zunyi and Shizhu. We built comprehensive, high-quality de novo transcriptome assemblies of the Chinese goldthread from short-read RNA-Sequencing data, obtaining 155,710 transcripts and 56,071 unigenes...
2017: PeerJ
https://www.readbyqxmd.com/read/28528298/emerging-role-of-monoamine-oxidase-as-a-therapeutic-target-for-cardiovascular-disease
#9
REVIEW
Soni Deshwal, Moises Di Sante, Fabio Di Lisa, Nina Kaludercic
In the past decade, accumulating evidence highlighted the role of monoamine oxidases (MAOs) in cardiovascular disease (CVD). MAOs are flavoenzymes located in the outer mitochondrial membrane, responsible for the degradation of neurotransmitters and biogenic amines. During this process they generate hydrogen peroxide, aldehydes and ammonia, species that can target mitochondria and induce mitochondrial dysfunction and cardiomyocyte death. Indeed, MAO inhibition affords cardioprotection in several models of CVD, such as ischemia/reperfusion, heart failure and diabetes...
May 18, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28487527/development-of-frequency-based-taste-receptors-using-bioinspired-glucose-nanobiosensor
#10
Amin TermehYousefi, Katsumi Tateno, Samira Bagheri, Hirofumi Tanaka
A method to fabricate a bioinspired nanobiosensor using electronic-based artificial taste receptors for glucose diagnosis is presented. Fabricated bioinspired glucose nanobiosensor designated based on an artificial taste bud including an amperometric glucose biosensor and taste bud-inspired circuits. In fact, the design of the taste bud-inspired circuits was inspired by the signal-processing mechanism of taste nerves which involves two layers. The first, known as a type II cell, detects the glucose by glucose oxidase and transduces the current signal obtained for the pulse pattern is conducted to the second layer, called type III cell, to induce synchronisation of the neural spiking activity...
May 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28480832/synthesis-of-new-arylidene-2-5-diketopiperazines-and-evaluation-of-their-anti-acetylcholinesterase-anti-xanthine-oxidase-anti-diabetic-and-cytotoxic-activities
#11
Mohamed Amine Belkacem, Hichem Ben Jannet, Hicham Ferhout, Laila Mzali, Jalloul Bouajila
BACKGROUND: 2,5-diketopiperazine derivatives are considered to be important classes of cyclic peptides due to their wide range of biological activities. OBJECTIVES: Synthesis a new series of protected 2,5-diketopiperazine derivatives and evaluate their biological activities. METHODS: A series of new soluble mono-protected arylidene 2,5-diketopiperazine derivatives 3a-p has been prepared by application of Claisen-Schmidt condensation of the N,N-diacetyl-diketopiperazine 1 with a series of arylaldehydes...
April 25, 2017: Medicinal Chemistry
https://www.readbyqxmd.com/read/28474720/aerobic-catalytic-systems-inspired-by-copper-amine-oxidases-recent-developments-and-synthetic-applications
#12
REVIEW
Martine Largeron
Recent efforts to design synthetic quinone-based catalysts for the efficient aerobic oxidation of amines to imines have been inspired by copper amine oxidases (CuAOs), a family of metalloenzymes which selectively converts primary amines into aldehydes, using molecular oxygen through the cooperation of a quinone-based cofactor, 2,4,5-trihydroxyphenylalanine quinone (TPQ) and a copper ion. Two distinct classes of bioinspired quinone-based catalytic systems have been developed. The first class consists of catalytic systems, which mimic the activity of CuAOs by exhibiting exquisite selectivity for primary amines...
June 7, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28471663/identification-of-4-aminomethyl-6-trifluoromethyl-2-phenoxy-pyridine-derivatives-as-potent-selective-and-orally-efficacious-inhibitors-of-the-copper-dependent-amine-oxidase-lysyl-oxidase-like-2-loxl2
#13
Martin W Rowbottom, Gretchen Bain, Imelda Calderon, Taylor Lasof, David Lonergan, Andiliy Lai, Fei Huang, Janice Darlington, Patricia Prodanovich, Angelina M Santini, Christopher D King, Lance Goulet, Kristen E Shannon, Gina L Ma, Katherine Nguyen, Deidre A MacKenna, Jilly F Evans, John H Hutchinson
LOXL2 catalyzes the oxidative deamination of ε-amines of lysine and hydroxylysine residues within collagen and elastin, generating reactive aldehydes (allysine). Condensation with other allysines or lysines drives the formation of inter- and intramolecular cross-linkages, a process critical for the remodeling of the ECM. Dysregulation of this process can lead to fibrosis, and LOXL2 is known to be upregulated in fibrotic tissue. Small-molecules that directly inhibit LOXL2 catalytic activity represent a useful option for the treatment of fibrosis...
May 25, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28460566/recognition-dynamics-of-dopamine-to-human-monoamine-oxidase-b-role-of-leu171-gln206-and-conserved-water-molecules-in-the-active-site-cavity
#14
Subrata Dasgupta, Soumita Mukherjee, Bishnu P Mukhopadhyay, Avik Banerjee, Deepak K Mishra
The human Monoamine oxidase (hMAO) metabolizes several biogenic amine neurotransmitters and is involved in different neurological disorders. Extensive MD simulation studies of dopamine-docked hMAO B structures have revealed the stabilization of amino-terminal of the substrate by a direct and water-mediated interaction of catalytic tyrosines, Gln206, and Leu171 residues. The catechol ring of the substrate is stabilized by Leu171(C-H)⋯π(Dop)⋯(H-C) Ile199 interaction. Several conserved water molecules are observed to play a role in the recognition of substrate to the enzyme, where W1 and W2 associate in dopamine- FAD interaction, reversible dynamics of W3 and W4 influenced the coupling of Tyr435 to Trp432 and FAD, and W5 and W8 stabilized the catalytic Tyr188/398 residues...
May 24, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28460360/design-synthesis-and-biological-activity-of-3-oxoamino-benzenesulfonamides-as-selective-and-reversible-lsd1-inhibitors
#15
Jiayue Xi, Siyuan Xu, Liming Wu, Tianfang Ma, Rongfeng Liu, Yu-Chih Liu, Dawei Deng, Yueqing Gu, Jinpei Zhou, Fei Lan, Xiaoming Zha
Lysine specific demethylase 1 (LSD1) is a flavin-dependent amine oxidase that selectively removes one or two methyl groups from H3 at Lys4 and is recognized as a promising therapeutic target for cancer and other diseases. Here, a series of 3-oxoamino-benzenesulfonamides were synthesized and evaluated for their inhibitory activity against LSD1. Compounds 7b and 7h showed the most potent inhibition with the IC50 values of 9.5 and 6.9μM, respectively. Furthermore, the LSD1 inhibition of 7b and 7h were reversible and selective...
June 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/28437839/inhibition-of-semicarbazide-sensitive-amine-oxidase-vascular-adhesion-protein-1-reduces-lipopolysaccharide-induced-neuroinflammation
#16
Serena Becchi, Alberto Buson, Jonathan Foot, Wolfgang Jarolimek, Bernard W Balleine
BACKGROUND AND PURPOSE: Neuroinflammation is initiated by a variety of stimuli including infections, sepsis, neurodegenerative diseases or traumatic brain injury and, if not adequately controlled, can lead to various degrees of neuronal damage and behavioural impairment. A critical event in the initial steps of inflammation is neutrophil extravasation. Semicarbazide-sensitive amine oxidase (SSAO, also known as vascular adhesion protein 1 or VAP-1) regulates neutrophil adhesion and extravasation...
July 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28435530/small-molecule-lysyl-oxidase-like-2-loxl2-inhibitors-the-identification-of-an-inhibitor-selective-for-loxl2-over-lox
#17
John H Hutchinson, Martin W Rowbottom, David Lonergan, Janice Darlington, Pat Prodanovich, Christopher D King, Jilly F Evans, Gretchen Bain
Two series of novel LOXL2 enzyme inhibitors are described: benzylamines substituted with electron withdrawing groups at the para-position and 2-substituted pyridine-4-ylmethanamines. The most potent compound, (2-chloropyridin-4-yl)methanamine 20 (hLOXL2 IC50 = 126 nM), was shown to be selective for LOXL2 over LOX and three other amine oxidases (MAO-A, MAO-B, and SSAO). Compound 20 is the first published small molecule inhibitor selective for LOXL2 over LOX.
April 13, 2017: ACS Medicinal Chemistry Letters
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
#18
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
#19
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
#20
Martine Largeron, Maurice-Bernard Fleury
A bioinspired organocatalytic cascade reaction for the selective aerobic oxidative cross-coupling of primary amines to imines is described. This approach takes advantages of commercially available pyrogallol monomeric precursor to deliver low loadings of natural purpurogallin in situ, under air. 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...
May 17, 2017: Chemistry: a European Journal
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