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https://www.readbyqxmd.com/read/29333543/in-vitro-evaluation-of-the-enantiomeric-r-and-s-1-1-binaphthyl-2-2-diaminodichlorido-pt-ii-complexes-in-human-burkitt-lymphoma-cells-emphasis-on-cellular-accumulation-cytotoxicity-dna-binding-and-ability-to-induce-apoptosis
#1
Belinda H Sørensen, Patrick Werth, Ian H Lambert, Patrick J Bednarski
The aim of this project is to gain insights into the uptake and cellular actions of the enantiomeric R- and S-1,1'-binaphthyl-2,2'-diaminodichlorido-Pt(ii) complexes (R- and S-[Pt(DABN)Cl2]) in the cisplatin-sensitive human Burkitt lymphoma cell line (Gumbus, IC50: 1.3 ± 0.2 μM) and its cisplatin-resistant sub-line (CDDPrGB, IC50: 6.6 ± 1.2 μM). The cellular uptakes of R- and S-[Pt(DABN)Cl2] are ca. 4-fold higher than cisplatin, and involve a transport mechanism independent of the volume-sensitive, organic anion-channel complex, which facilitates cisplatin accumulation...
January 15, 2018: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/29332793/label-free-detection-of-histone-based-on-cationic-conjugated-polymer-mediated-fluorescence-resonance-energy-transfer
#2
Xiaozhen Lu, Hongxia Jia, Xiaohua Yan, Jingsha Wang, Yucong Wang, Chenghui Liu
A simple and homogeneous histone assay is developed based on histone-induced DNA compressing coupled with cationic conjugated polymer (CCP)-mediated fluorescence resonance energy transfer (FRET). In this strategy, the CCP serves as the FRET donor and SYBR Green I (SG), which can strongly fluoresce not at its free state but after intercalated into the double stranded calf thymus DNA (dsDNA), serves as the acceptor of FRET. In the absence of histone, the dsDNA-SG and CCP combine with each other through electrostatic interaction and the strong FRET from CCP to SG occurs due to the overlapping between the fluorescent emitting spectrum of the CCP and the absorption spectrum of SG...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29331830/fetal-development-of-the-poeppig-s-woolly-monkey-lagothrix-poeppigii
#3
Rafael Dos Santos de Andrade, Frederico Ozanan Barros Monteiro, Hani Rocha El Bizri, Wilter Ricardo Russiano Vicente, Diva Anelie de Araujo Guimarães, Pedro Mayor
The intrauterine development is an evolutionary strategy that prepares the neonate for extra-uterine life, thus providing important information on the life history of species. In this study, we described the external and internal morphology of 25 fetuses of Poeppig's woolly monkeys (Lagothrix poeppigii) by taking advantage of a 10-year participatory collection of biological samples originated from animals hunted for subsistence purposes in the Peruvian Amazon. Logistic regressions estimated the probability of occurrence of each external morphological characteristic in relation to the crown-rump length (CRL)...
December 8, 2017: Theriogenology
https://www.readbyqxmd.com/read/29331088/significance-of-circulatory-dpp4-activity-in-metabolic-diseases
#4
REVIEW
Titli Nargis, Partha Chakrabarti
Dipeptidyl peptidase 4 (DPP4), also known as CD26 is a type II transmembrane protein that is released from the cell membrane in a nonclassical secretory mechanism. This exopeptidase selectively degrades varieties of substrates including incretin hormones, growth factors, and cytokines. A significant detectable amount of DPP4 activity can be measured in plasma as well as in different tissues such as intestinal epithelium, vascular endothelium, lymphocytes, monocytes, kidney, liver, adipose, lung, thymus, spleen, prostate, etc...
January 13, 2018: IUBMB Life
https://www.readbyqxmd.com/read/29330815/supplementing-dietary-rosemary-rosmarinus-officinalis-l-powder-and-vitamin-e-in-broiler-chickens-evaluation-of-humoral-immune-response-lymphoid-organs-and-blood-proteins
#5
Hossein Rostami, Alireza Seidavi, Mohammad Dadashbeiki, Yadollah Asadpour, João Simões, Assar Ali Shah, Vito Laudadio, Caterina Losacco, Antonella Perillo, Vincenzo Tufarelli
The aim of the present study was to evaluate the effect rosemary (Rosmarinus officinalis L.) powder (RP) and vitamin E (VE) at different levels on humoral immunity of broilers during a 42-day production cycle. A total of 270 1-day-old male chicks were assigned to nine groups with three replicates of ten birds each, and diets were supplemented with 0, 0.5, or 1.0% RP and 0, 100, or 200 mg/kg VE, respectively. Commercial-inactivated vaccines against avian influenza (AI) and Newcastle disease (ND) viruses, and living infectious bronchitis virus (IBV) vaccine were administered by spray method...
January 12, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29330161/production-of-bmp4-by-endothelial-cells-is-crucial-for-endogenous-thymic-regeneration
#6
Tobias Wertheimer, Enrico Velardi, Jennifer Tsai, Kirsten Cooper, Shiyun Xiao, Christopher C Kloss, Katja J Ottmüller, Zeinab Mokhtari, Christian Brede, Paul deRoos, Sinéad Kinsella, Brisa Palikuqi, Michael Ginsberg, Lauren F Young, Fabiana Kreines, Sophia R Lieberman, Amina Lazrak, Peipei Guo, Florent Malard, Odette M Smith, Yusuke Shono, Robert R Jenq, Alan M Hanash, Daniel J Nolan, Jason M Butler, Andreas Beilhack, Nancy R Manley, Shahin Rafii, Jarrod A Dudakov, Marcel R M van den Brink
The thymus is not only extremely sensitive to damage but also has a remarkable ability to repair itself. However, the mechanisms underlying this endogenous regeneration remain poorly understood, and this capacity diminishes considerably with age. We show that thymic endothelial cells (ECs) comprise a critical pathway of regeneration via their production of bone morphogenetic protein 4 (BMP4) ECs increased their production of BMP4 after thymic damage, and abrogating BMP4 signaling or production by either pharmacologic or genetic inhibition impaired thymic repair...
January 12, 2018: Science Immunology
https://www.readbyqxmd.com/read/29329027/cytotoxic-and-anticancer-properties-of-new-ruthenium-polypyridyl-complexes-with-different-lipophilicities
#7
Anjong Florence Tikum, Yu Jeong Jeon, Ju Hyun Lee, Min Hee Park, In Yeong Bae, Sang Heon Kim, Hye Jin Lee, Jinheung Kim
Three ruthenium complexes containing a bidentate piq ligand, [(piq)Ru(bpy)2]2+ (1), [(piq)Ru(phen)2]2+ (2), and [(piq)Ru(DIP)2]2+ (3) (piq = phenylisoquinolinate, bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline, DIP = 4,7-diphenyl-1,10-phenanthroline), were prepared. The DNA binding properties of complexes 1-3 to double-stranded DNA were studied. The binding of 1-3 to calf-thymus DNA (ct-DNA) yielded lower emission intensities than those observed with the corresponding Ru complexes alone. To explore potential interactions of complexes 1-3 with lipid-rich organs in live cells, the emission properties of the Ru probes were studied with liposomes...
January 9, 2018: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/29326881/interaction-of-anthraquinones-of-cassia-occidentalis-seeds-with-dna-and-glutathione
#8
Gati Krushna Panigrahi, Neeraj Verma, Nivedita Singh, Somya Asthana, Shailendra K Gupta, Anurag Tripathi, Mukul Das
Consumption of Cassia occidentalis (CO) seeds has been associated with the hepatomyoencephalopathy (HME) in children. Recently, we have characterized the toxic anthraquinones (AQs) such as Emodin, Rhein, Aloe-emodin, Chrysophanol and Physcion in CO seeds and detected these moieties in the bio fluids of CO poisoning cases. As AQs were detected in the serum of HME patients, their interaction with key biomolecules including protein, DNA and glutathione (GSH) is imperative. In this regard, we have previously reported the interaction of these AQs with serum albumin protein and their subsequent biological effects...
2018: Toxicology Reports
https://www.readbyqxmd.com/read/29326336/arid5b-as-a-critical-downstream-target-of-the-tal1-complex-that-activates-the-oncogenic-transcriptional-program-and-promotes-t-cell-leukemogenesis
#9
Wei Zhong Leong, Shi Hao Tan, Phuong Cao Thi Ngoc, Stella Amanda, Alice Wei Yee Yam, Wei-Siang Liau, Zhiyuan Gong, Lee N Lawton, Daniel G Tenen, Takaomi Sanda
The oncogenic transcription factor TAL1/SCL induces an aberrant transcriptional program in T-cell acute lymphoblastic leukemia (T-ALL) cells. However, the critical factors that are directly activated by TAL1 and contribute to T-ALL pathogenesis are largely unknown. Here, we identified AT-rich interactive domain 5B (ARID5B) as a collaborating oncogenic factor involved in the transcriptional program in T-ALL. ARID5B expression is down-regulated at the double-negative 2-4 stages in normal thymocytes, while it is induced by the TAL1 complex in human T-ALL cells...
January 11, 2018: Genes & Development
https://www.readbyqxmd.com/read/29325850/interaction-of-dna-with-water-soluble-complex-of-nickle-and-formation-of-dna-cross-links
#10
Maryam Nejat Dehkordi, Bjorn Akerman
Interaction of double stranded DNA with bulky and hydrophobic Salen type Schiff base complex: [N, N' Bis [3- tert-butyl-5-[triphenyl-phosphonium - methyl] - salicylidene] 1,2 ethylene-diamine nickel(III) acetate (refer to Ni Salen complex) was extensively investigated using the spectroscopic techniques and gel electrophoresis. Absorption titration experiment showed the hypochromic effect and the significant red shift of the complex absorption. In competition experiments with ethidium bromide (EB), Ni Salen complex exhibited non-competitive binding at high concentrations...
January 8, 2018: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29324786/controlled-potential-electro-oxidation-of-genomic-dna
#11
Vytas Reipa, Donald H Atha, Sanem H Coskun, Christopher M Sims, Bryant C Nelson
Exposure of mammalian cells to oxidative stress can result in DNA damage that adversely affects many cell processes. Lack of dependable DNA damage reference materials and standardized measurement methods, despite many case-control studies hampers the wider recognition of the link between oxidatively degraded DNA and disease risk. We used bulk electrolysis in an electrochemical system and gas chromatographic mass spectrometric analysis (GC/MS/MS) to control and measure, respectively, the effect of electrochemically produced reactive oxygen species on calf thymus DNA (ct-DNA)...
2018: PloS One
https://www.readbyqxmd.com/read/29323266/aif-loss-deregulates-hematopoiesis-and-reveals-different-adaptive-metabolic-responses-in-bone-marrow-cells-and-thymocytes
#12
Lauriane Cabon, Audrey Bertaux, Marie-Noëlle Brunelle-Navas, Ivan Nemazanyy, Laurianne Scourzic, Laure Delavallée, Laura Vela, Mathieu Baritaud, Sandrine Bouchet, Cécile Lopez, Vu Quang Van, Kevin Garbin, Danielle Chateau, Françoise Gilard, Marika Sarfati, Thomas Mercher, Olivier A Bernard, Santos A Susin
Mitochondrial metabolism is a tightly regulated process that plays a central role throughout the lifespan of hematopoietic cells. Herein, we analyze the consequences of the mitochondrial oxidative phosphorylation (OXPHOS)/metabolism disorder associated with the cell-specific hematopoietic ablation of apoptosis-inducing factor (AIF). AIF-null (AIF-/Y ) mice developed pancytopenia that was associated with hypocellular bone marrow (BM) and thymus atrophy. Although myeloid cells were relatively spared, the B-cell and erythroid lineages were altered with increased frequencies of precursor B cells, pro-erythroblasts I, and basophilic erythroblasts II...
January 11, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29322065/modeling-anti-hiv-1-hspc-based-gene-therapy-in-humanized-mice-previously-infected-with-hiv-1
#13
Wannisa Khamaikawin, Saki Shimizu, Masakazu Kamata, Ruth Cortado, Yujin Jung, Jennifer Lam, Jing Wen, Patrick Kim, Yiming Xie, Sanggu Kim, Hubert Arokium, Angela P Presson, Irvin S Y Chen, Dong Sung An
Investigations of anti-HIV-1 human hematopoietic stem/progenitor cell (HSPC)-based gene therapy have been performed by HIV-1 challenge after the engraftment of gene-modified HSPCs in humanized mouse models. However, the clinical application of gene therapy is to treat HIV-1-infected patients. Here, we developed a new method to investigate an anti-HIV-1 HSPC-based gene therapy in humanized mice previously infected with HIV-1. First, humanized mice were infected with HIV-1. When plasma viremia reached >107 copies/mL 3 weeks after HIV-1 infection, the mice were myeloablated with busulfan and transplanted with anti-HIV-1 gene-modified CD34+ HSPCs transduced with a lentiviral vector expressing two short hairpin RNAs (shRNAs) against CCR5 and HIV-1 long terminal repeat (LTR), along with human thymus tissue under the kidney capsule...
June 15, 2018: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/29321994/the-effect-of-ethanolic-extract-of-thymus-kotschyanus-on-cancer-cell-growth-in%C3%A2-vitro-and-depression-like-behavior-in-the-mouse
#14
Mohammad-Hossein Doosti, Kazem Ahmadi, Mahdi Fasihi-Ramandi
Cancer and depression are known as two of the most debilitating disease and disorder increasing evidence suggest an urgent need for new therapeutic agents with lower toxicity and high efficacy. Some Thyme species extracts have remarkably been shown to positively affect depression and cancer cells. In the present study, we investigated the effect of Thymus kotschyanus on depression and cancer cells. To this end, in experiment 1, NMRI mice were treated orally with the ethanolic extract of T. kotschyanus (50, 150 and 250 mg/ml) for seven days and then depression-like behavior was measured by Forced Swim Test (FST) and Tail Suspension Test (TST)...
January 2018: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29321967/teratoma-as-unusual-cause-of-chest-pain-hemoptysis-and-dyspnea-in-a-young-patient
#15
Irena Hammen, Achhe Lal Yadav
A 16-year-old girl presented with intermittent left chest pain and breathlessness on exertion for last 4 months with one episode of haemoptysis. There has been loss of appetite and weight loss of 4 kg over a period of 1 month. A chest radiograph revealed a large mass like opacity with pleural effusion in the left lung field. Computerized Tomography scanning (CT scanning) and Positron Emission Tomography/Computerized Tomography scanning (PET/CT scanning) demonstrated a 7 cm round, cystic lesion in the anterior mediastinum...
2018: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29321808/itraq-based-proteomic-analysis-to-identify-the-molecular-mechanism-of-zhibai-dihuang-granule-in-the-yin-deficiency-heat-syndrome-rats
#16
Chang-Ming Liu, Jing Chen, Su Yang, Ting-Ting Jiang, Zhong-Liang Chen, Hui-Hui Tu, Lian-Gen Mao, Yu-Ting Hu, Lin Gan, Zhong-Jie Li, Ji-Cheng Li
Background: Zhibai Dihuang Granule (ZDG) is a traditional Chinese medicine which has been used to treat Yin-deficiency-heat (YDH) syndrome for thousands of years in China. However, little work has been conducted to explore the molecular mechanism of ZDG in YDH syndrome, and the processes of YDH syndrome prevention and treatment have been developed slowly. The present study was aimed to explore the therapeutic mechanism of ZDG on YDH syndrome. Methods: The YDH syndrome rats were induced by hot Chinese herbs, then treated by ZDG orally for 1 week...
2018: Chinese Medicine
https://www.readbyqxmd.com/read/29321316/two-residues-in-nsp9-contribute-to-the-enhanced-replication-and-pathogenicity-of-highly-pathogenic-porcine-reproductive-and-respiratory-syndrome-virus
#17
Kuan Zhao, Jia-Cong Gao, Jun-Yao Xiong, Jin-Chao Guo, Yong-Bo Yang, Cheng-Gang Jiang, Yan-Dong Tang, Zhi-Jun Tian, Xue-Hui Cai, Guang-Zhi Tong, Tong-Qing An
Highly pathogenic porcine reproductive and respiratory syndrome virus (HP-PRRSV) possesses greater replicative capacity and pathogenicity than classical PRRSV. However, the factors that lead to enhanced replication and pathogenicity remain unclear. In our study, an alignment of all available full-length sequences of North-American type PRRSVs (n = 204) revealed two consistent amino acid mutations that differed between HP-PRRSV and classical PRRSV and were located at positions 519 and 544 in non-structural protein 9...
January 10, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29321310/therapeutic-efficacy-of-vectored-pgt121-gene-delivery-in-hiv-1-infected-humanized-mice
#18
Alexander Badamchi-Zadeh, Lawrence J Tartaglia, Peter Abbink, Christine A Bricault, Po-Ting Liu, Michael Boyd, Marinela Kirilova, Noe B Mercado, Ovini S Nanayakkara, Vladimir D Vrbanac, Andrew M Tager, Rafael A Larocca, Michael S Seaman, Dan H Barouch
Broadly neutralizing antibodies (bNAbs) are being explored for HIV-1 prevention and cure strategies. However, administration of purified bNAbs poses challenges in resource poor settings, where the HIV-1 disease burden is greatest. In vivo vector-based production of bNAbs represents an alternative strategy. We investigated adenovirus serotype 5 (Ad5) and adeno-associated virus serotype 1 (AAV1) vectors to deliver the HIV-1 specific bNAb PGT121 in wildtype and immunocompromised C57Bl/6 mice as well as in HIV-1-infected bone marrow-liver-thymus (BLT) humanized mice...
January 10, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29321277/intrathymic-deletion-of-il-7-reveals-a-contribution-of-the-bone-marrow-to-thymic-rebound-induced-by-androgen-blockade
#19
Pedro M Rodrigues, Ana R Ribeiro, Nicolas Serafini, Catarina Meireles, James P Di Santo, Nuno L Alves
Despite the well-documented effect of castration in thymic regeneration, the singular contribution of the bone marrow (BM) versus the thymus to this process remains unclear. The chief role of IL-7 in pre- and intrathymic stages of T lymphopoiesis led us to investigate the impact of disrupting this cytokine during thymic rebound induced by androgen blockade. We found that castration promoted thymopoiesis in young and aged wild-type mice. In contrast, only young germline IL-7-deficient (Il7-/- ) mice consistently augmented thymopoiesis after castration...
January 10, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29318612/transplanted-human-thymus-slices-induce-and-support-t-cell-development-in-mice-after-cryopreservation
#20
Susan Ross, Melissa Cheung, Ching-In Lau, Neil Sebire, Michael Burch, Peter Kilbride, Barry Fuller, G John Morris, E Graham Davies, Tessa Crompton
Here we show that slices of human thymus tissue that have been frozen and thawed can induce and support T-cell development when transplanted into nude mice. Babies born without a thymus require urgent treatment to reconstitute T-cell immunity. Thymus tissue is removed from infants during cardiac surgery, to allow access to the heart. This discarded thymus tissue can be transplanted into athymic infants to reconstitute T-cell immunity. Slices of thymus tissue are transplanted into the thigh, after a two-three week culture period to deplete thymocytes...
January 10, 2018: European Journal of Immunology
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