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https://www.readbyqxmd.com/read/28079299/a-platinum-blue-complex-exerts-its-cytotoxic-activity-via-dna-damage-and-induces-apoptosis-in-cancer-cells
#1
Zelal Adiguzel, Seniz Ozalp-Yaman, Gokalp Celik, Safia Salem, Tugba Bagci-Onder, Filiz Senbabaoglu, Yüksel Cetin, Ceyda Acilan
Here, we describe the characteristics of a Pt-blue complex [Pt4 (2-atp)8 (H2 O)(OH)] (2-atp: 2-aminothiophenol) as a prodrug for its DNA-binding properties and its use in cancer therapy. The nature of the interaction between the Pt-blue complex and DNA was evaluated based on spectroscopic measurements, the electronic absorption spectra, thermal behavior, viscosity, fluorometric titration and agarose gel electrophoresis. Our results suggested that the compound was able to partially intercalate DNA and appeared to induce both single and double stranded breaks (DBS) on DNA in vitro, but no DSBs in cells...
January 12, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28074715/comparison-of-three-different-primer-sets-for-sexing-birds
#2
Emel Çakmak, Çiğdem Akın Pekşen, C Can Bilgin
Because many bird species are monomorphic or only sexually dimorphic in adult stages, it is difficult to determine their sexes, which may cause significant problems in population and conservation studies. DNA-based sexing relies on the chromodomain helicase DNA binding ( CHD) gene located on the W chromosome and its homolog on the Z chromosome, giving distinct banding patterns on agarose gel as a result of length differences in intronic regions within this gene. We used 3 specific primer sets, CHD1F/CHD1R, 2550F/2718R, and P2/P8, for sex determination of 230 samples from 77 avian species...
January 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28072912/temperature-mapping-in-hydrogel-matrices-using-unmodified-digital-camera
#3
Ghinwa H Darwish, Hassan H Fakih, Pierre Karam
We report a simple, generally applicable and noninvasive fluorescent method for mapping thermal fluctuations in hydrogel matrices using an unmodified commercially available digital single-lens reflex camera (DSLR). The nanothermometer is based on the complexation of short conjugated polyelectrolytes, poly-(phenylene ethynylene) carboxylate, with an amphiphilic polymer, polyvinylpyrrolidone, which is in turn trapped within the porous network of a gel matrix. Changes in the temperature lead to a fluorescent ratiometric response with a maximum relative sensitivity of 2...
January 10, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28070846/development-of-a-convenient-in-vitro-gel-diffusion-model-for-predicting-the-in-vivo-performance-of-subcutaneous-parenteral-formulations-of-large-and-small-molecules
#4
Dennis H Leung, Yash Kapoor, Candice Alleyne, Erika Walsh, Andrew Leithead, Bahanu Habulihaz, Gino M Salituro, Annette Bak, Timothy Rhodes
Parenteral delivery remains a compelling drug delivery route for both large- and small-molecule drugs and can bypass issues encountered with oral absorption. For injectable drug products, there is a strong patient preference for subcutaneous administration due to its convenience over intravenous infusion. However, in subcutaneous injection, in contrast to intravenous administration, the formulation is in contact with an extracellular matrix environment that behaves more like a gel than a fluid. This can impact the expected performance of a formulation...
January 9, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28070779/hydrolytic-activity-of-esterase-antibody-complexes-retained-within-gel-capsules-after-complex-isolation
#5
Youji Shimazaki, Rino Miyatsuka
Delipidation in biological samples is important for some diagnostic tests and protein analyses. Lipids in the samples can be hydrolyzed by native esterases (ESs) within gel capsules after ES, and ES-antibody complexes are specifically trapped, extracted, and separated. Acrylamide and agarose gel capsules containing complexes of ES antibody were produced after the complexes were extracted using protein A-immobilized membranes, separated by non-denaturing electrophoresis, and stained by colloidal silver using glucose as a reductant...
January 9, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28070044/-expression-of-lactate-dehydrogenase-5-in-non-hodgkin-lymphoma-and-its-clinical-significance
#6
Fei Dong, Aixia Sui, Hongmei Jing
To determine expression of lactate dehydrogenase (LDH)-5 in non-Hodgkin lymphoma and its clinical significance.
 Methods: LDH-5 levels and LDH levels in NHL patients were examined by agarose gel electrophoresis and enzymatic method (n=63), respectively. Positive rates of LDH-5 and LDH were statistically analyzed.
 Results: The median age of NHL patients was 56(19-84) years old, including 36 males and 27 females. The positive numbers for LDH-5 and LDH in the initial treatment group (n=43) were significantly different (P<0...
December 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28061549/fast-and-simple-detection-methods-for-the-4-base-pair-deletion-of-canine-mdr1-abcb1-gene-by-pcr-and-isothermal-amplification
#7
Cathrin P Stiedl, Karin Weber
Dogs with a 4-bp deletion in the MDR1 (or ABCB1) gene show intolerance to certain drugs routinely used in veterinary medicine, such as ivermectin, vincristine, and doxorubicin. The mutation leads to a dysfunctional P-glycoprotein drug transporter, which results in drug accumulation in the brain and severe neurotoxicity. A rapid and accurate in-house test to determine the genotype of patients in cases of acute neurotoxic signs or in tumor patients is desirable. We describe a cost-effective detection method with simple technical equipment for veterinary practice...
January 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28053646/comparison-of-three-genomic-dna-extraction-methods-to-obtain-high-dna-quality-from-maize
#8
Amani Abdel-Latif, Gamal Osman
BACKGROUND: The world's top three cereals, based on their monetary value, are rice, wheat, and corn. In cereal crops, DNA extraction is difficult owing to rigid non-cellulose components in the cell wall of leaves and high starch and protein content in grains. The advanced techniques in molecular biology require pure and quick extraction of DNA. The majority of existing DNA extraction methods rely on long incubation and multiple precipitations or commercially available kits to produce contaminant-free high molecular weight DNA...
2017: Plant Methods
https://www.readbyqxmd.com/read/28047518/su-f-j-165-spectral-characterization-of-tissues-in-high-spectral-and-spatial-resolution-mr-images-in-vitro-implications-for-classification-based-synthetic-ct-algorithm
#9
A Diak, S Shea, M Surucu, S Gros, M Medved, G Karczmar, W Small, J Roeske
PURPOSE: To investigate features of spectral parameters of tissue for use in a synthetic CT algorithm. METHODS: A phantom of fresh beef leg embedded in 1% agarose gel was imaged at 1.5T on a Siemens Aero using HiSS MRI with 1.0mm resolution and 11.1Hz spectral resolution. Post-processing was performed off-line and included labeling of fat and water peaks, and fitting the spectra. All spectra were normalized by the noise within each voxel; thus all parameters are reported in units of signal-to-noise (SNR)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043537/usefulness-of-is6110-based-restriction-fragment-length-polymorphism-analysis-in-fingerprinting-of-mycobacterium-tuberculosis-isolates-in-north-india
#10
Jitendra Prasad Mathuria, Shampa Anupurba
OBJECTIVE/BACKGROUND: World Health Organization estimates that approximately one-third of the global community is infected with Mycobatcerium tuberculosis (MTB). Various molecular epidemiology methods were developed and found very promising for assessing the genetic diversity among MTB complex strain. The two major tools restriction fragment length polymorphism (RFLP) and spoligotyping were commonly used in various studies. Some Indian studies raise the question about the utility of IS6110-RFLP in India due to the presence of zero and low copy number of IS6110 element in MTB isolates...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28035361/korean-byungkyul-citrus-platymamma-hort-et-tanaka-flavonoids-induces-cell-cycle-arrest-and-apoptosis-regulating-mmp-protein-expression-in-hep3b-hepatocellular-carcinoma-cells
#11
Gyeong Eun Hong, Ho Jeong Lee, Jin A Kim, Silvia Yumnam, Suchismita Raha, Venu Venkatarame Gowda Saralamma, Jeong Doo Heo, Sang Joon Lee, Eun Hee Kim, Chun Kil Won, Gon Sup Kim
Citrus platymamma Hort.et Tanaka is an indigenous fruit of Jeju island in Korea. In this study the bioactivity of C. platymamma flavonoids were evaluated on human hepatoma Hep3B cell lines. Eleven flavonoids were identified from the peels of C. platymamma Hort.et Tanaka through high-performance liquid chromatography-Tandem mass spectrometry and the anticancer effect of these C. platymamma flavonoids on human hepatoma Hep3B were studied. Chromatin condensation was observed in Hep3B cells treated with C. platymamma flavonoids...
December 22, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/28033562/a-comprehensive-approach-to-ascertain-the-binding-mode-of-curcumin-with-dna
#12
P Haris, Varughese Mary, P Aparna, K V Dileep, C Sudarsanakumar
Curcumin is a natural phytochemical from the rhizoma of Curcuma longa, the popular Indian spice that exhibits a wide range of pharmacological properties like antioxidant, anticancer, anti-inflammatory, antitumor, and antiviral activities. In the published literatures we can see different studies and arguments on the interaction of curcumin with DNA. The intercalative binding, groove binding and no binding of curcumin with DNA were reported. In this context, we conducted a detailed study to understand the mechanism of recognition of dimethylsulfoxide-solubilized curcumin by DNA...
December 5, 2016: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28028300/high-quality-cell-block-preparation-from-scraping-of-conventional-cytology-slide-a-technical-report-on-a-modified-cytoscrape-cell-block-technique
#13
Y I Choi, M Jakhongir, S J Choi, L Kim, I S Park, J Y Han, J M Kim, Y C Chu
BACKGROUND: Immunocytochemistry (ICC) on formalin-fixed paraffin embedded cell blocks is an ancillary tool commonly recruited for differential diagnoses of fine needle aspiration cytology (FNAC) samples. However, the quality of conventional cell blocks in terms of adequate cellularity and evenness of distribution of cytologic material is not always satisfactory for ICC. We introduce a modified agarose-based cytoscrape cell block (CCB) technique that can be effectively used for the preparation of cell blocks from scrapings of conventional FNAC slides...
December 2016: Malaysian Journal of Pathology
https://www.readbyqxmd.com/read/28025389/direct-multiplex-pcr-dmpcr-for-the-identification-of-six-phlebotomine-sand-fly-species-diptera-psychodidae-including-major-leishmania-vectors-of-the-mediterranean
#14
Ioannis A Giantsis, Alexandra Chaskopoulou, Marie Claude Bon
Sand flies (Diptera: Psychodidae, subfamily Phlebotominae) are hematophagous insects that are known to transmit several anthroponotic and zoonotic diseases. Reliable identification of sand flies at species level is crucial for their surveillance, the detection and spread of their pathogens, and the implementation of targeted pest control strategies. Here, we designed a novel, time-saving, cost-effective and easy-to-apply molecular methodology, which avoids sequencing, for the identification of the following six Eastern Mediterranean sand fly species: Phebotomus perfiliewi Parrot, Phebotomus simici Theodor, Phebotomus tobbi Adler and Theodor, Phebotomus papatasi Scopoli, Sergentomyia dentata Sinton, and Sergentomyia minuta Theodor...
December 26, 2016: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28018297/mechanisms-of-antibacterial-action-of-quinoxaline-1-4-di-n-oxides-against-clostridium-perfringens-and-brachyspira-hyodysenteriae
#15
Fanfan Xu, Guyue Cheng, Haihong Hao, Yulian Wang, Xu Wang, Dongmei Chen, Dapeng Peng, Zhenli Liu, Zonghui Yuan, Menghong Dai
Quinoxaline 1,4-di-N-oxides (QdNOs) are a class of bioreductive compounds, however, their antibacterial mechanisms are still unclarified. The aim of this study was to assess the ability of two representative QdNO drugs, cyadox (CYA) and olaquindox (OLA), to produce reactive oxide species (ROS) in Gram-positive anaerobe Clostridium perfringens CVCC1125 and Gram-negative anaerobe Brachyspira hyodysenteriae B204. In addition, the effects of QdNOs on the integrity of bacterial cell walls and membranes as well as the morphological alterations and DNA oxidative damage in C...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28011343/design-and-characterization-of-a-magnetite-pei-multifunctional-nanohybrid-as-non-viral-vector-and-cell-isolation-system
#16
Raúl Megías, Maialen Arco, Jesús Ciriza, Laura Saenz Del Burgo, Gustavo Puras, Margarita López-Viota, Ángel V Delgado, Jon P Dobson, José L Arias, José L Pedraz
It is described the reproducible formulation and complete physicochemical characterization of nanohybrids based on magnetite (Fe3O4) cores embedded within a polyethylenimine (PEI) matrix. Particle size, surface electrical charge, X-ray diffraction and Fourier transform infrared spectroscopy (FTIR) analyses, and magnetic field-responsive behaviour characterizations defined that the 4:3 (Fe3O4:PEI) weight proportion led to the best production performances of magnetically responsive nanocomposites in which the magnetic nuclei are completely covered by the polymeric shell...
December 21, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27988826/rutin-nickel-complex-synthesis-characterization-antioxidant-dna-binding-and-dna-cleavage-activities
#17
Aun Raza, Shumaila Bano, Xiuquan Xu, Rong Xian Zhang, Haider Khalid, Furqan Muhammad Iqbal, Changkun Xia, Jian Tang, Zhen Ouyang
The rutin-nickel (II) complex (RN) was synthesized and characterized by elemental analysis, UV-visible spectroscopy, IR, mass spectrometry, (1)H NMR, TG-DSC, SEM, and molar conductivity. The low molar conductivity value investigates the non-electrolyte nature of the complex. The elemental analysis and other physical and spectroscopic methods reveal the 1:2 stoichiometric ratio (metal/ligand) of the complex. An antioxidant study of rutin and its metal complex against DPPH radical showed that the complex has more radical scavenging activity than free rutin...
December 17, 2016: Biological Trace Element Research
https://www.readbyqxmd.com/read/27988464/synthesis-and-biological-screening-of-novel-2-morpholinoquinoline-nucleus-clubbed-with-1-2-4-oxadiazole-motifs
#18
Sharad C Karad, Vishal B Purohit, Rahul P Thummar, Beena K Vaghasiya, Ronak D Kamani, Parth Thakor, Vasudev R Thakkar, Sampark S Thakkar, Arabinda Ray, Dipak K Raval
Novel series of 2-morpholinoquinoline scaffolds (6a-n), containing the 1,2,4-oxadiazole and moiety, was designed and synthesized in good yield (76-86%). The synthesized compounds were screened for their preliminary in vitro antimicrobial activity against a panel of pathogenic strains of bacteria and fungi. Molecular docking and pharmacokinetic study were carried out for the prepared compounds. The cytotoxicity of the synthesized compounds was tested at different concentrations using bioassay of S. pombe cells at the cellular level...
December 9, 2016: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27975317/detection-of-hepatitis-b-virus-particles-released-from-cultured-cells-by-particle-gel-assay
#19
Ran Yan, Dawei Cai, Yuanjie Liu, Haitao Guo
The culture fluid of HBV replicating cells contains a mixture of viral particles with different structural and genetic components, including enveloped infectious virions, genome-free virion, envelope-only subviral particles, and nonenveloped naked capsids. Based on their different physical and chemical properties, the enveloped and nonenveloped particles can be separated by the native agarose gel electrophoresis and transferred onto a positively charged microporous membrane, then the virus particle-associated protein components and nucleic acid content can be detected by antibody-based enzyme immunoassay (EIA) and hybridization, respectively...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27975259/finding-mapt-mutations-in-frontotemporal-dementia-and-other-tauopathies
#20
Carol Dobson-Stone, John B J Kwok
Sanger sequencing is a classic technique in molecular genetics to detect single nucleotide DNA variants in genomic DNA. Here we describe the detection of MAPT mutations by polymerase chain reaction amplification of patient genomic DNA followed by bidirectional Sanger sequencing. Exon trapping is a technique whereby genomic DNA covering the exon of interest and flanking intronic sequence is cloned into the intron of an expression vector and transfected into human cell lines. RNA is extracted and splicing products are examined by reverse-transcriptase PCR and agarose gel electrophoresis...
2017: Methods in Molecular Biology
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