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https://www.readbyqxmd.com/read/28330320/xanthine-oxidase-inhibitory-and-antioxidant-potential-of-indian-muscodor-species
#1
Neha Kapoor, Sanjai Saxena
Xanthine oxidase is a key enzyme responsible for hyperuricemia, a pre-disposing factor for Gout and oxidative stress-related diseases. Only two clinically approved xanthine oxidase inhibitors Allopurinol and Febuxostat are currently used for treatment of hyperuricemia. However, owing to their side effects there is a need for new non-purine-based selective inhibitors of xanthine oxidase. In the process of exploring novel xanthine oxidase inhibitors and anti-oxidants, we screened the culture filtrate of 07 novel species of Muscodor, a sterile endophytic fungi isolated from Cinnamomum and Aegle marmelos...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330312/isolation-and-screening-of-l-asparaginase-free-of-glutaminase-and-urease-from-fungal-sp
#2
Kruthi Doriya, Devarai Santhosh Kumar
L-Asparaginase is a chemotherapeutic drug used in the treatment of acute lymphoblastic leukaemia (ALL), a malignant disorder in children. L-Asparaginase helps in removing acrylamide found in fried and baked foods that is carcinogenic in nature. L-Asparaginase is present in plants, animals and microbes. Various microorganisms such as bacteria, yeast and fungi are generally used for the production of L-asparaginase as it is difficult to obtain the same from plants and animals. L-Asparaginase from bacteria causes anaphylaxis and other abnormal sensitive reactions due to low specificity to asparagine...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329746/genotyping-platelet-activation-and-cardiovascular-outcome-in-patients-after-percutaneous-coronary-intervention-two-pieces-of-the-puzzle-of-clopidogrel-resistance
#3
Gerasimos Siasos, Evangelos Oikonomou, Manolis Vavuranakis, Eleni Kokkou, Konstantinos Mourouzis, Sotiris Tsalamandris, Marina Zaromitidou, Stamatios Kioufis, Vasiliki Tsigkou, Spyridon Defteros, Christodoulos Stefanadis, Dimitris Tousoulis
OBJECTIVES: Individual platelet responses to antiplatelet therapy depend on genetic, cellular, and clinical factors. CYP2C19 and P2Y12 receptor polymorphisms are implicated in platelet responses to antiplatelet treatment. We aimed to evaluate the impact of CYP2C19 and C34T P2Y12 genotyping on platelet reactivity and cardiovascular outcome in patients after percutaneous coronary intervention (PCI) on clopidogrel treatment. METHODS: We enrolled 408 patients with stable coronary artery disease (CAD) receiving aspirin and clopidogrel (75 mg/day) 1 month after PCI...
March 22, 2017: Cardiology
https://www.readbyqxmd.com/read/28328764/simultaneous-determination-of-protein-unbound-cyclosporine-a-and-mycophenolic-acid-in-kidney-transplant-patients-using-liquid-chromatography-tandem-mass-spectrometry
#4
Heike Bittersohl, Juliane Herbinger, Ming Wen, Lutz Renders, Werner Steimer, Peter B Luppa
BACKGROUND: Therapeutic drug monitoring (TDM) of immunosuppressants is essential to optimize patient care after organ transplantation. In blood, most immunosuppressive drugs are bound to plasma proteins or located inside blood cells. However, it is generally assumed that only protein-unbound (free) drug concentrations are pharmacologically active and could therefore better reflect the clinical outcome. Study data are still limited due to lacking rapid analytical methods. Therefore, a simple multiplex method for direct measurement of free cyclosporine A (CsA) and mycophenolic acid (MPA) has been developed...
March 21, 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28328552/il-1%C3%AE-levels-are-associated-with-chronic-multisite-pain-in-people-living-with-hiv
#5
Jessica S Merlin, Andrew O Westfall, Sonya L Heath, Burel R Goodin, Jesse C Stewart, Robert E Sorge, Jarred Younger
BACKGROUND: The pathophysiology of chronic pain experienced by people living with HIV (PLWH) in the current antiretroviral treatment era is poorly understood. We sought to investigate the relationship between inflammation and chronic pain in PLWH. We hypothesized that, among PLWH who have undetectable HIV viral loads, those with Chronic Multisite Pain (CMP) would have higher levels of circulating pain-related inflammatory markers than those without chronic pain. SETTING: This study was conducted at the University of Alabama at Birmingham's Center for AIDS Research Network of Integrated Clinical System (CNICS) site...
March 20, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28328525/moving-sum-of-number-of-positive-patient-result-as-a-quality-control-tool
#6
Jiakai Liu, Chin Hon Tan, Tony Badrick, Tze Ping Loh
BACKGROUND: Recently, the total prostate-specific antigen (PSA) assay used in a laboratory had a positive bias of 0.03 μg/L, which went undetected. Consequently, a number of post-prostatectomy patients with previously undetectable PSA concentrations (defined as <0.03 μg/L in that laboratory) were being reported as having detectable PSA, which suggested poorer prognosis according to clinical guidelines. METHODS: Through numerical simulations, we explored (1) how a small bias may evade the detection of routine quality control (QC) procedures with specific reference to the concentration of the QC material, (2) whether the use of 'average of normals' approach may detect such a small bias, and (3) describe the use of moving sum of number of patient results with detectable PSA as an adjunct QC procedure...
March 22, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28328524/paramagnetic-micro-particles-as-a-tool-for-rapid-quantification-of-apixaban-dabigatran-edoxaban-and-rivaroxaban-in-human-plasma-by-uhplc-ms-ms
#7
Martin H J Wiesen, Cornelia Blaich, Thomas Streichert, Guido Michels, Carsten Müller
BACKGROUND: Assessment of the anticoagulant activity of direct oral anticoagulants (DOACs) is justified in special clinical situations. Here, we evaluated two independent extraction methods and developed a multi-analyte ultra-high performance liquid chromatography tandem mass (UHPLC-MS/MS) method for the quantification of apixaban, dabigatran, edoxaban and rivaroxaban in human plasma. METHODS: Routine extraction based on protein precipitation with acetonitrile and subsequent centrifugation was compared to sample clean-up using commercial paramagnetic micro-particles and subsequent magnetic depletion...
March 22, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28328523/real-life-dabigatran-and-metabolite-concentrations-focused-on-inter-patient-variability-and-assay-differences-in-patients-with-atrial-fibrillation
#8
Kristel Boonen, Ellen Schmitz, Fleur Rozestraten, Dennis van den Heuvel, Luc Brunsveld, Pepijn van der Voort, Daan van de Kerkhof
BACKGROUND: Dabigatran is prescribed to increasing numbers of patients with atrial fibrillation (AF). Although routine monitoring is not considered to be useful, measuring drug concentrations can be clinically relevant in specific situations. The aim of this study was the comparison of different functional and non-functional assays for determination of dabigatran concentrations at different timepoints in a real-life patient population with AF. We focused on the differences between assays in identifying patients with low drug concentrations...
March 22, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28328316/a-high-throughput-screening-assay-using-a-photoconvertable-protein-for-identifying-inhibitors-of-transcription-translation-or-proteasomal-degradation
#9
David K Heidary, Ashley Fox, Chris I Richards, Edith C Glazer
Dysregulated transcription, translation, and protein degradation are common features of cancer cells, regardless of specific genetic profiles. Several clinical anticancer agents take advantage of this characteristic vulnerability and interfere with the processes of transcription and translation or inhibit protein degradation. However, traditional assays that follow the process of protein production and removal require multistep processing and are not easily amenable to high-throughput screening. The use of recombinant fluorescent proteins provides a convenient solution to this problem, and moreover, photoconvertable fluorescent proteins allow for ratiometric detection of both new protein production and removal of existing proteins...
April 2017: SLAS Discov
https://www.readbyqxmd.com/read/28328082/microrna-488-3p-sensitizes-malignant-melanoma-cells-to-cisplatin-by-targeting-prkdc
#10
Ning Li, Yue Ma, Li Ma, Yu Guan, Liang Ma, Daping Yang
Deregulation of microRNAs (miRNAs) has been implicated in drug resistance in various types of cancers, including malignant melanoma (MM). MiR-488-3p has been reported as a tumor suppressor in several cancers. However, the exact expression patterns of miR-488-3p and the precise molecular mechanisms underlying its role in MM remain largely unknown and require further investigation. In this study, we demonstrated that miR-488-3p is significantly down regulated in MM clinical specimens and cell lines. Ectopic expression of miR-488-3p resulted in markedly increased drug sensitivity of MM cells in vitro and in vivo...
March 22, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28327800/trypanosoma-cruzi-i-genotype-among-isolates-from-patients-with-chronic-chagas-disease-followed-at-the-evandro-chagas-national-institute-of-infectious-diseases-fiocruz-brazil
#11
Tatiana da Silva Fonseca de Oliveira, Barbara Neves Dos Santos, Tainah Silva Galdino, Alejandro Marcel Hasslocher-Moreno, Otilio Machado Pereira Bastos, Maria Auxiliadora de Sousa
INTRODUCTION: Trypanosoma cruzi is the etiologic agent of Chagas disease in humans, mainly in Latin America. Trypanosome stocks were isolated by hemoculture from patients followed at Evandro Chagas National Institute of Infectious Diseases (FIOCRUZ) and studied using different approaches. METHODS: For species and genotype identification, the stocks were analyzed by parasitological techniques, polymerase chain reaction assays targeted to specific DNA sequences, isoenzyme patterns, besides sequencing of a polymorphic locus of TcSC5D gene (one stock)...
January 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28327798/molecular-and-clinical-epidemiological-surveillance-of-dengue-virus-in-para%C3%A3-ba-northeast-brazil
#12
Isabel Cristina Guerra-Gomes, Bruna Macêdo Gois, Rephany Fonseca Peixoto, Camila Alves Oliveira, Bruna Leal Lima Maciel, Maria Izabel Ferreira Sarmento, Anna Stella Cysneiros Pachá, Josélio Maria Galvão Araújo, Ian Porto Gurgel Amaral, Tatjana Souza Lima Keesen
INTRODUCTION: Despite being the most prevalent arboviral disease worldwide, dengue has been neglected lately. However, recent epidemics of arboviruses such as Zika and chikungunya in locations throughout the world have alerted health authorities to these diseases. This study evaluated the incidence pattern of dengue, its clinical characteristics, and co-circulation of serotypes from 2007 to 2015 in Paraiba State, Northeast Brazil. METHODS: Data on dengue cases from 2007 to 2015 were extracted from clinical reports of the National System for Notifiable Diseases [Sistema Nacional de Agravos de Notificação (SINAN)] of Brazil provided by the Paraiba Health Department...
January 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28327786/polymorphisms-in-genes-tlr1-2-and-4-are-associated-with-differential-cytokine-and-chemokine-serum-production-in-patients-with-leprosy
#13
Nadja de Lima Santana, Jamile Leão Rêgo, Joyce Moura Oliveira, Lucas Frederico de Almeida, Marcos Braz, Lídia Maria Medeiros Machado, Paulo Roberto Lima Machado, Léa Cristina Castellucci
BACKGROUND: Leprosy or hansen's disease is a spectral disease whose clinical forms mostly depends on host's immune and genetic factors. Different Toll-like receptors (TLR) variants have been described associated with leprosy, but with some lack of replication across different populations. OBJECTIVES: To evaluate the role of polymorphisms in genes TLR1, TLR2 and TLR4 and susceptibility to leprosy in a genetic case control study; to verify the association between genotypes of these markers and the immunological profile in the serum of patients with leprosy...
April 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28327479/finger-printing-of-counterfeit-bevacizumab-and-identifying-it-before-clinical-use
#14
Thirumurthy Velpandian, Madhu Nath, Moksha Laxmi, Nabanita Halder
BACKGROUND: Bevacizumab is widely used for ophthalmic purposes. Recently, counterfeit bevacizumab has become a matter of concern. We analysed samples of suspected counterfeit formulations of bevacizumab and assessed the possibility of using simple tests in the clinic by ophthalmologists to prevent the use of counterfeit preparations in patients. METHODS: We did a protein analysis using Bradford assay and SDS-PAGE to confirm the presence of bevacizumab in 16 samples - 6 suspected and 10 others...
November 2016: National Medical Journal of India
https://www.readbyqxmd.com/read/28327300/rbaltmip-a-recombinant-alpha-type-myotoxin-inhibitor-from-bothrops-alternatus-rhinocerophis-alternatus-snake-as-a-potential-candidate-to-complement-the-antivenom-therapy
#15
Norival A Santos-Filho, Tiago S Sousa, Johara Boldrini-França, Ludier K Santos-Silva, Danilo L Menaldo, Flávio Henrique-Silva, Adélia C O Cintra, Helen J Laure, Carla C N Mamede, Fábio Oliveira, Thalita B Riul, Marcelo Dias-Baruffi, José C Rosa, Suely V Sampaio
Phospholipase A2 inhibitors (PLIs) are important targets in the search and development of new drugs. This study aimed at evaluating the potential of an alpha-type phospholipase A2 inhibitor from Bothrops alternatus (Rhinocerophis alternatus) snake in its recombinant form (rBaltMIP) to complement the conventional antivenom therapy. Biochemical experiments showed that rBaltMIP presented pI 5.8 and molecular masses of ∼21 kDa by SDS-PAGE and 19.57 kDa by MALDI/TOF MS. After tryptic peptides sequencing, the results were compared with other PLIs available in databases, showing 100% identity between rBaltMIP and its native inhibitor BaltMIP and from 92% to 96% identity with other inhibitors...
December 15, 2016: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28327189/microrna-27a-contributes-to-the-malignant-behavior-of-gastric-cancer-cells-by-directly-targeting-ph-domain-and-leucine-rich-repeat-protein-phosphatase-2
#16
Lei Ding, Shanyong Zhang, Mu Xu, Renwen Zhang, Pengcheng Sui, Qing Yang
BACKGROUND: Accumulating evidence indicates that microRNA-27a (miR-27a) is involved in carcinogenesis and tumor progression. However, the exact function and molecular mechanism of miR-27a in gastric cancer remain unclear. METHODS: Quantitative real-time PCR (qRT-PCR) was used to quantify the expression of miR-27a and its target gene. The function of miR-27a in gastric cancer was investigated through in vitro and in vivo assays (MTT assay, colony formation assay, flow cytometry assay, wound healing assay, migration and invasion assay, immunohistochemistry (IHC), immunofluorescence (IF) and Western blot)...
March 21, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28327172/effect-of-guizhifulingwan-keishibukuryogan-on-climacteric-syndrome-study-protocol-for-a-randomized-controlled-pilot-trial
#17
Jung-Eun Kim, Junghyo Cho, Ojin Kwon, Ae-Ran Kim, Hyo-Ju Park, So-Young Jung, Joo-Hee Kim, Mikyung Kim, Hye-Yoon Lee, Jun-Hwan Lee
BACKGROUND: The aim of this study is to explore the efficacy of Guizhifulingwan (GFW) in the treatment of climacteric syndrome in women. METHODS/DESIGN: This is a single-center, randomized, placebo-controlled, parallel-group design pilot trial. Fifty participants with climacteric syndrome will be randomly allocated to the GFW or placebo group in a 1:1 ratio. The participants will be administered GFW or placebo granules three times a day for 4 weeks and will be followed up for a further 4 weeks...
March 21, 2017: Trials
https://www.readbyqxmd.com/read/28327152/trim8-restores-p53-tumour-suppressor-function-by-blunting-n-myc-activity-in-chemo-resistant-tumours
#18
Francesca Mastropasqua, Flaviana Marzano, Alessio Valletti, Italia Aiello, Giuseppe Di Tullio, Annalisa Morgano, Sabino Liuni, Elena Ranieri, Luisa Guerrini, Giuseppe Gasparre, Elisabetta Sbisà, Graziano Pesole, Antonio Moschetta, Mariano Francesco Caratozzolo, Apollonia Tullo
BACKGROUND: TRIM8 plays a key role in controlling the p53 molecular switch that sustains the transcriptional activation of cell cycle arrest genes and response to chemotherapeutic drugs. The mechanisms that regulate TRIM8, especially in cancers like clear cell Renal Cell Carcinoma (ccRCC) and colorectal cancer (CRC) where it is low expressed, are still unknown. However, recent studies suggest the potential involvement of some microRNAs belonging to miR-17-92 and its paralogous clusters, which could include TRIM8 in a more complex pathway...
March 21, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/28327148/drug-resistance-mediating-plasmodium-falciparum-polymorphisms-and-clinical-presentations-of-parasitaemic-children-in-uganda
#19
Stephen Tukwasibwe, Patrick Tumwebaze, Melissa Conrad, Emmanuel Arinaitwe, Moses R Kamya, Grant Dorsey, Samuel L Nsobya, Bryan Greenhouse, Philip J Rosenthal
BACKGROUND: Plasmodium falciparum genetic polymorphisms that mediate altered drug sensitivity may impact upon virulence. In a cross-sectional study, Ugandan children with infections mutant at pfcrt K76T, pfmdr1 N86Y, or pfmdr1 D1246Y had about one-fourth the odds of symptomatic malaria compared to those with infections with wild type (WT) sequences. However, results may have been confounded by greater likelihood in those with symptomatic disease of higher density mixed infections and/or recent prior treatment that selected for WT alleles...
March 21, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28327121/bap1-and-pbrm1-in-metastatic-clear-cell-renal-cell-carcinoma-tumor-heterogeneity-and-concordance-with-paired-primary-tumor
#20
Jeanette E Eckel-Passow, Daniel J Serie, John C Cheville, Thai H Ho, Payal Kapur, James Brugarolas, R Houston Thompson, Bradley C Leibovich, Eugene D Kwon, Richard W Joseph, Alexander S Parker
BACKGROUND: BAP1 and PBRM1 are frequently mutated in primary clear cell renal cell carcinoma (ccRCC) tumors; however, the frequency and clinical relevance of these mutations in metastatic ccRCC tumors is unknown. Additionally, while intra-tumor heterogeneity has been shown to be common in primary ccRCC, little is known regarding heterogeneity in metastatic ccRCC tumors. MATERIALS AND METHODS: We analyzed BAP1 and PBRM1 loss of protein expression in patient-matched primary and metastatic tumors from 97 patients...
March 21, 2017: BMC Urology
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