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carbonic anhydrase

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https://www.readbyqxmd.com/read/28727804/effects-of-pre-surgical-administration-of-prostaglandin-analogs-on-the-outcome-of-trabeculectomy
#1
Takako Miki, Tomoko Naito, Miyuki Fujiwara, Ryoichi Araki, Rieko Kiyoi, Yusuke Shiode, Atsushi Fujiwara, Yuki Morizane, Fumio Shiraga
For primary open angle glaucoma (POAG), laser treatment or surgery is used when the target intraocular pressure (IOP) cannot be achieved by pharmacological agents, such as prostaglandin (PG) analogs; these drugs also have varied effects. We retrospectively reviewed the medical records of 74 POAG patients (74 eyes) whose IOP was inadequately controlled by PG analogs (bimatoprost [13 eyes], latanoprost [34 eyes], tafluprost [11 eyes], and travoprost [16 eyes]) and underwent primary trabeculectomy. The proportion of patients with no recurrent IOP elevation within 24 months post-trabeculectomy was significantly (P < 0...
2017: PloS One
https://www.readbyqxmd.com/read/28726170/prescribing-trends-in-a-glaucoma-clinic-and-adherence-to-egs-guidelines-a-retrospective-non-interventional-single-center-uk-study
#2
Mark Fajgenbaum, Ejaz Ansari
INTRODUCTION: The purpose of this study was to determine prescribing trends in a specialist glaucoma clinic in the UK. Specifically, the aims were to determine which drugs were prescribed as first-, second-, and third-line treatment, the persistence of first-, second-, and third-line treatment regimens, and the proportion of treatment decisions conforming to the European Glaucoma Society (EGS) guidelines. METHODS: A retrospective, non-interventional, single-center, case-note review was performed on a cohort of consecutive patients presenting to a specialist glaucoma clinic for follow-up...
July 19, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28724620/thioredoxin-mediated-ros-homeostasis-explains-natural-variation-in-plant-regeneration
#3
Hui Zhang, Ting Ting Zhang, Hui Liu, De Ying Shi, Meng Wang, Xiao Min Bie, Xing Guo Li, Xian Sheng Zhang
Plant regeneration is fundamental to basic research and agricultural applications. The regeneration capacity of plants varies largely in different genotypes, but the reason for this variation remains elusive. Here, we identified a novel thioredoxin DCC1 in determining the capacity of shoot regeneration among Arabidopsis natural variation. Loss-of-function of DCC1 resulted in inhibited shoot regeneration. DCC1 was mainly expressed in the inner tissues of the callus and encoded a functional thioredoxin that was localized in the mitochondria...
July 19, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28724284/inter-alpha-inhibitor-h4-as-a-potential-biomarker-predicting-the-treatment-outcomes-in-patients-with-hepatocellular-carcinoma
#4
Eun-Jung Lee, Seung-Hyun Yang, Kyoung-Jin Kim, Hyejung Cha, Seo Jin Lee, Ji-Hye Kim, Junkyu Song, Kyung-Hee Chun, Jinsil Seong
Purpose: Early prediction of treatment outcomes represents an essential step towards increased treatment efficacy and survival in patients with hepatocellular carcinoma (HCC). In this study, we performed two-dimensional electrophoresis (2-DE) followed by protein profiling to identify biomarkers predictive of therapeutic outcomes in patients with HCC who received liver-directed therapy (LDTx) involving local radiotherapy (RT), and studied the underlying mechanisms of the identified proteins...
July 17, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28722055/the-amyloid-architecture-provides-a-scaffold-for-enzyme-like-catalysts
#5
Z S Al-Garawi, B A McIntosh, D Neill-Hall, A A Hatimy, S M Sweet, M C Bagley, L C Serpell
Natural biological enzymes possess catalytic sites that are generally surrounded by a large three-dimensional scaffold. However, the proportion of the protein molecule that participates in the catalytic reaction is relatively small. The generation of artificial or miniature enzymes has long been a focus of research because enzyme mimetics can be produced with high activity at low cost. These enzymes aim to mimic the active sites without the additional architecture contributed by the protein chain. Previous work has shown that amyloidogenic peptides are able to self-assemble to create an active site that is capable of binding zinc and catalysing an esterase reaction...
July 19, 2017: Nanoscale
https://www.readbyqxmd.com/read/28720698/catalysis-and-chemical-mechanisms-of-calcite-dissolution-in-seawater
#6
Adam V Subhas, Jess F Adkins, Nick E Rollins, John Naviaux, Jonathan Erez, William M Berelson
Near-equilibrium calcite dissolution in seawater contributes significantly to the regulation of atmospheric [Formula: see text] on 1,000-y timescales. Despite many studies on far-from-equilibrium dissolution, little is known about the detailed mechanisms responsible for calcite dissolution in seawater. In this paper, we dissolve (13)C-labeled calcites in natural seawater. We show that the time-evolving enrichment of [Formula: see text] in solution is a direct measure of both dissolution and precipitation reactions across a large range of saturation states...
July 18, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28720122/enhance-the-performance-of-current-scoring-functions-with-the-aid-of-3d-protein-ligand-interaction-fingerprints
#7
Jie Liu, Minyi Su, Zhihai Liu, Jie Li, Yan Li, Renxiao Wang
BACKGROUND: In structure-based drug design, binding affinity prediction remains as a challenging goal for current scoring functions. Development of target-biased scoring functions provides a new possibility for tackling this problem, but this approach is also associated with certain technical difficulties. We previously reported the Knowledge-Guided Scoring (KGS) method as an alternative approach (BMC Bioinformatics, 2010, 11, 193-208). The key idea is to compute the binding affinity of a given protein-ligand complex based on the known binding data of an appropriate reference complex, so the error in binding affinity prediction can be reduced effectively...
July 18, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28718636/long-chain-alkyl-esters-of-hydroxycinnamic-acids-as-promising-anticancer-agents-selective-induction-of-apoptosis-in-cancer-cells
#8
José C J M D S Menezes, Najmeh Edraki, Shrivallabh Kamat, Mahsima Khoshneviszadeh, Zahra Kayani, Hossein Hadavand Mirzaei, Ramin Miri, Nasrollah Erfani, Maryam Nejati, José A S Cavaleiro, Tiago B Silva, Luciano Saso, Fernanda M Borges, Omidreza Firuzi
Cancer is the major cause of morbidity and mortality worldwide. Hydroxycinnamic acids (HCAs) are naturally-occurring compounds and their alkyl esters may possess enhanced biological activities. We evaluated C4, C14, C16 and C18 alkyl esters of p-coumaric, ferulic, sinapic and caffeic acids (19 compounds) for their cytotoxic activity against four human cancer cells and also examined their effect on cell cycle alteration and apoptosis induction. The tetradecyl (1c) and hexadecyl (1d) esters of p-coumaric acid and tetradecyl ester of caffeic acid (4c), but not the parental HCAs, were selectively effective against MOLT-4 (human lymphoblastic leukemia) cells with IC50 values of 0...
July 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28718328/primary-mono-and-bis-sulfonamides-obtained-via-regiospecific-sulfochlorination-of-n-arylpyrazoles-inhibition-profile-against-a-panel-of-human-carbonic-anhydrases
#9
Mikhail Krasavin, Mikhail Korsakov, Oksana Ronzhina, Tiziano Tuccinardi, Stanislav Kalinin, Muhammet Tanç, Claudiu T Supuran
No abstract text is available yet for this article.
December 2017: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/28717013/mechanisms-of-carbon-dioxide-acquisition-and-co2-sensing-in-marine-diatoms-a-gateway-to-carbon-metabolism
#10
REVIEW
Yusuke Matsuda, Brian M Hopkinson, Kensuke Nakajima, Christopher L Dupont, Yoshinori Tsuji
Diatoms are one of the most successful marine eukaryotic algal groups, responsible for up to 20% of the annual global CO2 fixation. The evolution of a CO2-concentrating mechanism (CCM) allowed diatoms to overcome a number of serious constraints on photosynthesis in the marine environment, particularly low [CO2]aq in seawater relative to concentrations required by the CO2 fixing enzyme, ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO), which is partly due to the slow diffusion rate of CO2 in water and a limited CO2 formation rate from [Formula: see text] in seawater...
September 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28714894/carbonic-anhydrase-from-porphyromonas-gingivalis-as-a-drug-target
#11
REVIEW
Claudiu T Supuran, Clemente Capasso
Periodontitis originates from a microbial synergy causing the development of a mouth microbial imbalance (dysbiosis), consisting of a microbial community composed of anaerobic bacteria. Most studies concerning the treatment of periodontitis have primarily take into account the Gram-negative bacterium Porphyromonas gingivalis, because it is a prominent component of the oral microbiome and a successful colonizer of the oral epithelium. Here, we focus our attention on the study of the carbonic anhydrases (CAs, EC 4...
July 15, 2017: Pathogens
https://www.readbyqxmd.com/read/28709126/effects-of-increasing-temperature-alone-and-combined-with-copper-exposure-on-biochemical-and-physiological-parameters-in-the-zooxanthellate-scleractinian-coral-mussismilia-harttii
#12
Juliana da Silva Fonseca, Laura Fernandes de Barros Marangoni, Joseane Aparecida Marques, Adalto Bianchini
Effects of increasing temperature alone and in combination with exposure to dissolved copper (Cu) were evaluated in the zooxanthellate scleractinian coral Mussismilia harttii using a marine mesocosm system. Endpoints analyzed included parameters involved in metabolism [maximum photosynthetic capacity of zooxanthellae (Fv/Fm), chlorophyll a and ATP concentrations], calcification [carbonic anhydrase (CA) and Ca(2+)-Mg(2+)-ATPase activity], and oxidative status [antioxidant capacity against peroxyl radicals (ACAP) and lipid peroxidation (LPO)]...
July 8, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28708224/carbonic-anhydrase-inhibitor-with-topical-nsaid-therapy-to-manage-cystoid-macular-edema-in-a-case-of-gyrate-atrophy
#13
Elena Piozzi, Salvatore Alessi, Silvia Santambrogio, Giovanni Cillino, Marco Mazza, Aissa Iggui, Salvatore Cillino
PURPOSE: Gyrate atrophy of the choroid and retina (GACR) is a rare chorioretinal dystrophy characterized by a deficiency of the enzyme ornithine aminotransferase, inherited in an autosomal recessive pattern. CASE REPORT: We report a case of a 17-year-old girl with GACR, for whom the level of serum ornithine had been reduced by an arginine-restricted diet. The patient was responsive to an association of topical nonsteroidal anti-inflammatory drugs (NSAIDs) and a carbonic anhydrase inhibitor (CAI) to reduce cystoid macular edema (CME)...
July 8, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28706293/small-cell-lung-cancer-model-of-circulating-tumor-cell-tumorospheres-in-chemoresistance
#14
Lukas Klameth, Barbara Rath, Maximilian Hochmaier, Doris Moser, Marlene Redl, Felicitas Mungenast, Katharina Gelles, Ernst Ulsperger, Robert Zeillinger, Gerhard Hamilton
Small cell lung cancer (SCLC) represents 15% of lung cancers and is characterized by early dissemination, development of chemoresistance and a poor prognosis. A host of diverse drugs failed invariably and its mechanisms of global chemoresistance have not been characterized so far. SCLC represents the prototype of an aggressive and highly metastatic tumor which is ultimately refractory to any treatment. High numbers of circulating tumor cells (CTCs) allowed us to establish 5 CTC cell lines (BHGc7, 10, 16, 26 and UHGc5) from patients with recurrent SCLC...
July 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28705662/transcriptional-response-of-the-extremophile-red-alga-cyanidioschyzon-merolae-to-changes-in-co2-concentrations
#15
Nadine Rademacher, Thomas J Wrobel, Alessandro W Rossoni, Samantha Kurz, Andrea Bräutigam, Andreas P M Weber, Marion Eisenhut
Cyanidioschyzon merolae (C. merolae) is an acidophilic red alga growing in a naturally low carbon dioxide (CO2) environment. Although it uses a ribulose 1,5-bisphosphate carboxylase/oxygenase with high affinity for CO2, the survival of C. merolae relies on functional photorespiratory metabolism. In this study, we quantified the transcriptomic response of C. merolae to changes in CO2 conditions. We found distinct changes upon shifts between CO2 conditions, such as a concerted up-regulation of photorespiratory genes and responses to carbon starvation...
July 4, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28705642/corrigendum-to-synthesis-and-carbonic-anhydrase-inhibitory-properties-of-novel-chalcone-substituted-benzenesulfonamides-bioorg-med-chem-lett-26-2016-5867-5870
#16
Tayfun Arslan, Emir Alper Türkoğlu, Murat Şentürk, Claudiu T Supuran
No abstract text is available yet for this article.
July 10, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28705076/elucidation-of-stable-intermediates-in-urea-induced-unfolding-pathway-of-human-carbonic-anhydrase-ix
#17
Amresh Prakash, Gunjan Dixit, Naveen Kumar Meena, Ruhar Singh, Poonam Vishwakarma, Smriti Mishra, Andrew M Lynn
Human carbonic anhydrase IX (CAIX) has evolved as a promising biomarker for cancer prognosis, due to its overexpression in various cancer and restricted expression in normal tissue. However, limited information is available on its biophysical behavior. The unfolding of CAIX in aqueous urea solution was studied using all-atom molecular dynamics simulation approach. The results of this study revealed a stable intermediate state along the unfolding pathway of CAIX. At intermediate concentrations of urea (2.0-4...
July 14, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28702086/transcriptome-and-key-genes-expression-related-to-carbon-fixation-pathways-in-chlorella-py-zu1-cells-and-their-growth-under-high-concentrations-of-co2
#18
Yun Huang, Jun Cheng, Hongxiang Lu, Yong He, Junhu Zhou, Kefa Cen
BACKGROUND: The biomass yield of Chlorella PY-ZU1 drastically increased when cultivated under high CO2 condition compared with that cultivated under air condition. However, less attention has been given to the microalgae photosynthetic mechanisms response to different CO2 concentrations. The genetic reasons for the higher growth rate, CO2 fixation rate, and photosynthetic efficiency of microalgal cells under higher CO2 concentration have not been clearly defined yet. RESULTS: In this study, the Illumina sequencing and de novo transcriptome assembly of Chlorella PY-ZU1 cells cultivated under 15% CO2 were performed and compared with those of cells grown under air...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28699064/joule-heating-and-thermal-denaturation-of-proteins-in-nano-esi-theta-tips
#19
Feifei Zhao, Sarah M Matt, Jiexun Bu, Owen G Rehrauer, Dor Ben-Amotz, Scott A McLuckey
Electro-osmotically induced Joule heating in theta tips and its effect on protein denaturation were investigated. Myoglobin, equine cytochrome c, bovine cytochrome c, and carbonic anhydrase II solutions were subjected to electro-osmosis in a theta tip and all of the proteins were denatured during the process. The extent of protein denaturation was found to increase with the applied square wave voltage and electrolyte concentration. The solution temperature at the end of a theta tip was measured directly by Raman spectroscopy and shown to increase with the square wave voltage, thereby demonstrating the effect of Joule heating through an independent method...
July 11, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28695384/carbonic-anhydrase-inhibitors-induce-developmental-toxicity-during-zebrafish-embryogenesis-especially-in-the-inner-ear
#20
Hiroko Matsumoto, Shoko Fujiwara, Hisako Miyagi, Nobuhiro Nakamura, Yasuhiro Shiga, Toshihiro Ohta, Mikio Tsuzuki
In vertebrates, carbonic anhydrases (CAs) play important roles in ion transport and pH regulation in many organs, including the eyes, kidneys, central nervous system, and inner ear. In aquatic organisms, the enzyme is inhibited by various chemicals present in the environment, such as heavy metals, pesticides, and pharmaceuticals. In this study, the effects of CA inhibitors, i.e., sulfonamides [ethoxyzolamide (EZA), acetazolamide (AZA), and dorzolamide (DZA)], on zebrafish embryogenesis were investigated. In embryos treated with the sulfonamides, abnormal development, such as smaller otoliths, an enlarged heart, an irregular pectoral fin, and aberrant swimming behavior, was observed...
July 10, 2017: Marine Biotechnology
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