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https://www.readbyqxmd.com/read/28646493/src-family-kinase-phosphorylation-of-the-motor-domain-of-the-human-kinesin-5-eg5
#1
Kathleen G Bickel, Barbara J Mann, Joshua S Waitzman, Taylor A Poor, Sarah E Rice, Patricia Wadsworth
Spindle formation in mammalian cells requires precise spatial and temporal regulation of the kinesin-5, Eg5, which generates outward force to establish spindle bipolarity. Our results demonstrate that Eg5 is phosphorylated in cultured cells by Src family kinases (SFKs) at three sites in the motor head: Y125, Y211, and Y231. Mutation of these sites diminishes motor activity in vitro, and replacement of endogenous Eg5 with phosphomimetic Y211 in LLC-Pk1 cells results in monopolar spindles, consistent with loss of Eg5 activity...
June 23, 2017: Cytoskeleton
https://www.readbyqxmd.com/read/28641302/7-hexagon-multifocal-electroretinography-for-an-objective-functional-assessment-of-the-macula-in-14-seconds
#2
Etienne M Schönbach, Voraporn Chaikitmongkol, Rachel Annam, Emma C McDonnell, Yulia Wolfson, Emily Fletcher, Hendrik P N Scholl
PURPOSE: We present the multifocal electroretinogram (mfERG) with a 7-hexagon array as an objective test of macular function that can be recorded in 14 s. We provide normal values and investigate its reproducibility and validity. METHODS: Healthy participants underwent mfERG testing according to International Society for Clinical Electrophysiology of Vision (ISCEV) standards using the Espion Profile/D310 multifocal ERG system (Diagnosys, LLC, Lowell, MA, USA). One standard recording of a 61-hexagon array and 2 repeated recordings of a custom 7-hexagon array were obtained...
June 23, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28629814/abcb1a-p-glycoprotein-limits-brain-exposure-of-the-anticancer-drug-candidate-seliciclib-in-vivo-in-adult-mice
#3
Franciska Erdő, Ildikó Nagy, Beáta Tóth, Annamária Bui, Éva Molnár, Zoltán Tímár, Rémi Magnan, Peter Krajcsi
Seliciclib displayed limited brain exposure in vivo in adult rats with mature blood-brain barrier (BBB). Selicilib was shown to be a specific substrate of human ABCB1 in vitro. To demonstrate that ABCB1/Abcb1 can limit brain exposure in vivo in mice we are showing that seliciclib is a substrate of mouse Abcb1a, the murine ABCB1 ortholog expressed in the BBB as LLC-PK-Abcb1a cells displayed an efflux ratio (ER) of 15.31±3.54 versus an ER of 1.44±0.10 in LLC-PK1-mock cells. Additionally, in the presence of LY335979, an ABCB1/Abcb1a specific inhibitor, the observed ER for seliciclib in the LLC-PK1-mMdr1a cells decreased to 1...
June 16, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28627460/polysaccharides-from-epimedium-koreanum-nakai-with-immunomodulatory-activity-and-inhibitory-effect-on-tumor-growth-in-llc-bearing-mice
#4
Chengcheng Wang, Liang Feng, Jiayan Su, Li Cui, Dan Liu, Jun Yan, Chuanlin Ding, Xiaobin Tan, Xiaobin Jia
ETHNOPHARMACOLOGICAL RELEVANCE: Epimedium koreanum Nakai is documented as tonic herbal in China for over a thousand years and has the potential to enhance the body's immunity according to the theory of traditional Chinese medicine. Polysaccharides are one of the most important effective compounds in Epimedium koreanum Nakai. Accumulating evidence indicated polysaccharides derived from traditional Chinese medicine have potent immune-enhancing properties and relatively nontoxic effects in cancer treatment...
June 13, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28620140/comparison-of-tumor-biology-of-two-distinct-cell-sub-populations-in-lung-cancer-stem-cells
#5
Jianyu Wang, Zhiwei Sun, Yongli Liu, Liangsheng Kong, Shixia Zhou, Junlin Tang, Hongmei Rosie Xing
3Characterization of the stem-like properties of cancer stem cells (CSCs) remain indirect and qualitative, especially the ability of CSCs to undergo asymmetric cell division for self renewal and differentiation, a unique property of cells of stem origin. It is partly due to the lack of stable cellular models of CSCs. In this study, we developed a new approach for CSC isolation and purification to derive a CSC-enriched cell line (LLC-SE). By conducting five consecutive rounds of single cell cloning using the LLC-SE cell line, we obtained two distinct sub-population of cells within the Lewis lung cancer CSCs that employed largely symmetric division for self-renewal (LLC-SD) or underwent asymmetric division for differentiation (LLC-ASD)...
June 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28617341/microwave-assisted-facile-synthesis-anticancer-evaluation-and-docking-study-of-n-5-substituted-methylene-amino-1-3-4-thiadiazol-2-yl-methyl-benzamide-derivatives
#6
Shailee V Tiwari, Sumaiya Siddiqui, Julio A Seijas, M Pilar Vazquez-Tato, Aniket P Sarkate, Deepak K Lokwani, Anna Pratima G Nikalje
In the present work, 12 novel Schiff's bases containing a thiadiazole scaffold and benzamide groups coupled through appropriate pharmacophore were synthesized. These moieties are associated with important biological properties. A facile, solvent-free synthesis of a series of novel 7(a-l) N-((5-(substituted methylene amino)-1,3,4-thiadiazol-2-yl)methyl) benzamide was carried out under microwave irradiation. Structures of the synthesized compounds were confirmed by IR, NMR, mass spectral study and elemental analysis...
June 15, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28617188/molecular-mechanisms-underlying-the-inhibitory-effects-of-qingzaojiufei-decoction-on-tumor-growth-in-lewis-lung-carcinoma
#7
Bin Xie, Xiong Xie, Bin Rao, Shengzhang Liu, Hongning Liu
OBJECTIVE: Qingzaojiufei decoction (QD) is an empirical herbal formula from traditional Chinese medicine that is used for the treatment of lung-related diseases. However, the effect of QD on the growth of lung tumor cells has not been investigated. The aim of this study was to examine the antitumor activity of QD in Lewis lung carcinomas (LLC) in vivo and in vitro, and to elucidate the underlying mechanisms. METHODS: The LLC cells were used to assess the antitumor activity of QD by Cell Counting Kit-8 assay in vitro...
February 1, 2017: Integrative Cancer Therapies
https://www.readbyqxmd.com/read/28616903/-study-on-the-relationship-between-normalization-of-tumor-microvessels-and-ca9-for-rh-endostatin-to-inhibit-lewis-lung-cancer
#8
Lang He, Yong-Hong Sun, Kang Liu, Xing-Xing Xu, Mi Yang, Xun Wu, Li Jiang
OBJECTIVES: To explore the relationship between normalization of tumor microvessels and CA9 for rh-Endostatin to inhibit Lewis lung cancer (LLC) and the expression level of CA9 in LLC. METHODS: Lewis cells of logarithmic growth phase were collected and made into 1×10(6) mL(-1) cell suspensions were prepared. The transplanted tumor model of LLC was established on C57/BL6 mice by injected 0.2 mL cell suspensions/mice into 40 C57/BL6 mice. 40 LLC mice were randomly divided into control group and rh-ES group (20 mice per group)...
May 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28613403/opposite-actions-of-urotensin-ii-and-relaxin-2-on-cellular-expression-of-fibronectin-in-renal-fibrosis-a-preliminary-experimental-study
#9
Valeria Cernaro, Maria Antonietta Medici, Federica Bianco, Domenico Santoro, Antonio Lacquaniti, Adolfo Romeo, Silvia Lucisano, Antoine Buemi, Michele Buemi
Our aim was to evaluate the role of urotensin II, urantide (urotensin II receptor antagonist) and relaxin-2 on the cellular expression of fibronectin as a surrogate marker for renal fibrosis. We employed LLC-PK1 renal tubular epithelial cells and assessed the influence on the fibrotic process of the above-mentioned substances by using anti-fibronectin antibodies in western blot analysis. The addition of urotensin II increased fibronectin expression. Urantide reduced the positivity for fibronectin caused by urotensin II (P<0...
June 14, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28599420/gene-and-mirna-expression-profiles-of-mouse-lewis-lung-carcinoma-llc1-cells-following-single-or-fractionated-dose-irradiation
#10
Vaidotas Stankevicius, Karolina Kuodyte, Diana Schveigert, Danute Bulotiene, Tomas Paulauskas, Kristina Daniunaite, Kestutis Suziedelis
In clinical practice ionizing radiation (IR) is primarily applied to cancer treatment in the form of fractionated dose (FD) irradiation. Despite this fact, a substantially higher amount of current knowledge in the field of radiobiology comes from in vitro studies based on the cellular response to single dose (SD) irradiation. In addition, intrinsic and acquired resistance to IR remains an issue in clinical practice, leading to radiotherapy treatment failure. Numerous previous studies suggest that an improved understanding of the molecular processes involved in the radiation-induced DNA damage response to FD irradiation could improve the effectiveness of radiotherapy...
June 2017: Oncology Letters
https://www.readbyqxmd.com/read/28597597/sinus-hypoplasia-in-the-cystic-fibrosis-rat-resolves-in-the-absence-of-chronic-infection
#11
Jessica Grayson, Kiranya E Tipirneni, Daniel F Skinner, Matthew Fort, Do-Yeon Cho, Shaoyan Zhang, Andrew C Prince, Dong-Jin Lim, Calvin Mackey, Bradford A Woodworth
BACKGROUND: Sinus hypoplasia is a hallmark characteristic in cystic fibrosis (CF). Chronic rhinosinusitis (CRS) is nearly universal from a young age, impaired sinus development could be secondary to loss of the cystic fibrosis transmembrane conductance regulator (CFTR) or consequences of chronic infection during maturation. The objective of this study was to assess sinus development relative to overall growth in a novel CF animal model. METHODS: Sinus development was evaluated in CFTR(-/-) and CFTR(+/+) rats at 3 stages of development: newborn; 3 weeks; and 16 weeks...
June 8, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28591286/structure-functional-correlation-using-adaptive-optics-oct-and-microperimetry-in-a-case-of-occult-macular-dystrophy
#12
Karlos Ítalo Viana, André Messias, Rubens Camargo Siqueira, Murilo W Rodrigues, Rodrigo Jorge
We report retinal functional and structural changes of a 40-year-old man diagnosed with occult macular dystrophy. Comprehensive ophthalmological evaluation was performed, followed by spectral-domain optical coherence tomography (SD-OC - Heidelberg) and image acquisition using an adaptive optics (AO) camera (RTX1, Imagine Eyes) for photoreceptor density analysis. Functional tests included full-field ERG (ERG) and multifocal electroretinography (mfERG) (Diagnosys, LLC) and microperimetry with scanning laser ophthalmoscope (SLO) fixation controlled (MAIA, CenterVUE)...
March 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28590898/tinnitus-management-randomized-controlled-trial-comparing-extended-wear-hearing-aids-conventional-hearing-aids-and-combination-instruments
#13
James A Henry, Garnett McMillan, Serena Dann, Keri Bennett, Susan Griest, Sarah Theodoroff, Shien Pei Silverman, Susan Whichard, Gabrielle Saunders
BACKGROUND: Whereas hearing aids have long been considered effective for providing relief from tinnitus, controlled clinical studies evaluating this premise have been very limited. PURPOSE: The purpose of this study was to systematically determine the relative efficacy of conventional receiver-in-the-canal hearing aids (HA), the same hearing aids with a sound generator (HA+SG), and extended-wear, deep fit hearing aids (EWHA), to provide relief from tinnitus through a randomized controlled trial...
June 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28583551/renoprotective-effects-of-carbon-monoxide-releasing-molecule-3-in-ischemia-reperfusion-injury-and-cisplatin-induced-toxicity
#14
Y E Yoon, K S Lee, Y J Lee, H H Lee, W K Han
BACKGROUND: We investigated the effects of a soluble carbon monoxide-releasing molecule (CORM) in cisplatin-induced cytotoxicity and ischemia-reperfusion injury (IRI) in vitro. METHODS: The effects of CORM-3 (12.5-200 μM) were assessed in normal kidney epithelial cells (HK-2, LLC-PK1) and renal cancer cells (Caki-1, Caki-2) subjected to cisplatin (50-200 μM) or IRI. To induce IRI, cells were placed in an anaerobic chamber (37°C, 95% nitrogen, 5% carbon dioxide) for 48 hours...
June 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28579329/the-synthesis-structure-toxicity-relationship-of-cisplatin-derivatives-for-the-mechanism-research-of-cisplatin-induced-nephrotoxicity
#15
Jing Hu, Tian-Ming Wu, Hong-Ze Li, Ze-Ping Zuo, Ying-Lan Zhao, Li Yang
Cisplatin is a widely used antineoplastic drug, while its nephrotoxicity limits the clinical application. Although several mechanisms contributing to nephrotoxicity have been reported, the direct protein targets are unclear. Herein we reported the synthesis of 29 cisplatin derivatives and the structure-toxicity relationship (STR) of these compounds with MTT assay in human renal proximal tubule cells (HK-2) and pig kidney epithelial cells (LLC-PK1). To the best of our knowledge, this study represented the first report regarding the structure-toxicity relationship (STR) of cisplatin derivatives...
April 26, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28576949/trends-and-correlates-of-hookah-use-among-high-school-students-in-north-carolina
#16
Li-Ling Huang, Erin L Sutfin, Sarah Kowitt, Tanha Patel, Leah Ranney, Adam O Goldstein
OBJECTIVES Although youth cigarette smoking has declined in the United States, use of alternative tobacco products, such as hookah, has increased. This study assesses changes in prevalence of use from 2011 to 2013, and examines factors associated with current hookah use among North Carolina high school students in 2013.METHODS Data came from the North Carolina Youth Tobacco Survey in 2011 (n = 4,791) and 2013 (n = 4,092). STATA (StataCorp LLC) logistic regression survey procedures account for the complex survey design and sampling weights...
May 2017: North Carolina Medical Journal
https://www.readbyqxmd.com/read/28559050/in-vitro-performance-of-near-infrared-light-transillumination-at-780-nm-and-digital-radiography-for-detection-of-non-cavitated-approximal-caries
#17
N Abogazalah, G J Eckert, M Ando
OBJECTIVES: To evaluate the ability of a Near Infrared Light Transillumination (NILT) device to detect non-cavitated approximal caries lesions; and to compare its performance to Digital Radiography (DR). METHODS: Thirty human extracted premolars (sound to lesions into the outer one-third of dentin) were selected. Lesion depth was confirmed by micro-computed tomography (μ-CT). Teeth were mounted in a custom-made device to simulate approximal contact. DR and NILT (CariVu™, DEXIS, LLC, Hatfield, PA, USA) examinations were performed and repeated by three trained and calibrated examiners...
May 27, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28552338/evaluation-of-guggulsterone-derivatives-as-novel-kidney-cell-protective-agents-against-cisplatin-induced-nephrotoxicity
#18
Dahae Lee, Taejung Kim, Ki Hyun Kim, Jungyeob Ham, Tae Su Jang, Ki Sung Kang, Jae Wook Lee
Guggulsterone derivatives were prepared using [3+2] click chemistry with aryl and alkyl acetylene. The series of derivatives were evaluated for their cellular protective effects on cisplatin-treated cultured LLC-PK1 kidney epithelial cells. Among the guggulsterone-triazole derivatives, compound 6g, which contains a hydroxyl methyl group, was the most active of all the derivatives. In an additional study, we determined that inhibition of the mitogen-activated protein kinase/caspase-3 signaling cascade by 6g mediates its protective effects against cytotoxicity in cultured LLC-PK1 cells...
May 11, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28549790/the-inhibitor-of-differentiation-1-id1-enables-lung-cancer-liver-colonization-through-activation-of-an-emt-program-in-tumor-cells-and-establishment-of-the-pre-metastatic-niche
#19
Eduardo Castañón, Alex Soltermann, Inés López, Marta Román, Margarita Ecay, María Collantes, Miriam Redrado, Iosune Baraibar, José María López-Picazo, Christian Rolfo, Fernando Vidal-Vanaclocha, Luis Raez, Walter Weder, Alfonso Calvo, Ignacio Gil-Bazo
Id1 promotes carcinogenesis and metastasis, and predicts prognosis of non-small cell lung cancer (NSCLC)-adenocarcionoma patients. We hypothesized that Id1 may play a critical role in lung cancer colonization of the liver by affecting both tumor cells and the microenvironment. Depleted levels of Id1 in LLC (Lewis lung carcinoma cells, LLC shId1) significantly reduced cell proliferation and migration in vitro. Genetic loss of Id1 in the host tissue (Id1(-/-) mice) impaired liver colonization and increased survival of Id1(-/-) animals...
May 24, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28541685/discovery-of-1-4-benzodiazepine-2-5-dione-bzd-derivatives-as-dual-nucleotide-binding-oligomerization-domain-containing-1-2-nod1-nod2-antagonists-sensitizing-paclitaxel-ptx-to-suppress-lewis-lung-carcinoma-llc-growth-in-vivo
#20
Suhua Wang, Jingshu Yang, Xueyuan Li, Zijie Liu, Youzhen Wu, Guangxu Si, Yiran Tao, Nan Zhao, Xiao Hu, Yao Ma, Gang Liu
Nucleotide-binding oligomerization domain-like receptors (NLRs) are intracellular sensors of pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns (DAMPs). Previously, we reported nucleotide-binding oligomerization domain-containing protein 1 (NOD1) antagonists (11, 12) and a NOD2 antagonist (9) that sensitized docetaxel (DTX) or paclitaxel (PTX) treatment for breast or lung cancer. In this article, we describe for the first time a 1,4-benzodiazepine-2,5-dione (BZD) derivative (26bh) that acts as a dual NOD1/NOD2 antagonist and inhibits both nuclear factor κB (NF-κB) and mitogen-activated protein kinase (MAPK) inflammatory signaling, thereby sensitizing PTX to suppress Lewis lung carcinoma (LLC) growth...
June 12, 2017: Journal of Medicinal Chemistry
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