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https://www.readbyqxmd.com/read/28938168/energy-transfer-and-color-tunable-emission-in-tb-3-eu-3-co-doped-sr3lana-po4-3f-phosphors
#1
Shuo Li, Ning Guo, Qimeng Liang, Yu Ding, Huitao Zhou, Ruizhuo Ouyang, Wei Lü
A group of color tunable Sr3LaNa(PO4)3F:Tb(3+),Eu(3+) phosphors were prepared by conventional high temperature solid state method. The phase structures, luminescence properties, fluorescence lifetimes and energy transfer were investigated in detail. Under 369nm excitation, owing to efficient energy transfer of Tb(3+)→Eu(3+), the emission spectra both have green emission of Tb(3+) and red emission of Eu(3+). An efficient energy transfer occur in Tb(3+), Eu(3+) co-doped Sr3LaNa(PO4)3F phosphors. The most possible mechanism of energy transfer is dipole-dipole interaction by Dexter's theoretical model...
September 18, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28938052/effectiveness-of-tb-sensitization-initiatives-in-improving-the-involvement-of-self-help-group-members-in-rural-tb-control-in-south-india
#2
Beena Thomas, B Priscilla Rebecca, A Dhanalakshmi, S Rani, A Deepa Lakshmi, Basilea Watson, R Vijayalakshmi, M Muniyandi, N Karikalan
Background: The 'End TB strategy' has highlighted the importance of inter-sectoral collaboration and community mobilization for achieving zero TB deaths by 2020. Objective: The aim of the study was to develop and test a model TB sensitization programme involving self help groups (SHGs). Methodology: This experimental study was conducted in two blocks (intervention and control), in Tiruvallur district. The intervention content included short-lecture, musical story telling activity, role play, short film on TB...
December 1, 2016: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28937879/advax4-delta-inulin-combination-adjuvant-together-with-ecmx-a-fusion-construct-of-three-protective-mtb-antigens-induces-a-potent-th1-immune-response-and-protects-mice-against-mycobacterium-tuberculosis-infection
#3
Bruno de Paula Oliveira Santos, Monalisa Martins Trentini, Renato Beilner Machado, Mara Rúbia Nunes Celes, André Kipnis, Nikolai Petrovsky, Ana Paula Junqueira-Kipnis
Tuberculosis (TB) remains a main public health concern and 10.4 million new cases occurred in 2015 around the world. BCG is the only approved vaccine against TB, but has variable efficacy and new vaccines are needed. We developed two new mTB vaccine candidates based on the recombinant fusion proteins, rCMX and rECMXformulated with Advax4, a new combination adjuvant combining delta inulin, CpG oligonucleotide and murabutide. When BALB/c mice were immunized three times intramuscularly with these vaccine formulationsInjection of Advax4 alone increased the percentage of lymphatic endothelial cells and activated macrophages (F480/CD11b(+)) in the draining lymph nodes consistent with a chemotactic adjuvant effect...
September 22, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28937657/synthesis-of-2-4-diaminopyrimidine-core-based-derivatives-and-biological-evaluation-of-their-anti-tubercular-activities
#4
Yifan Ouyang, Hao Yang, Peng Zhang, Yu Wang, Sargit Kaur, Xuanli Zhu, Zhe Wang, Yutong Sun, Wei Hong, Yun Fong Ngeow, Hao Wang
Tuberculosis (TB) is a chronic, potentially fatal disease caused by Mycobacterium tuberculosis (Mtb). The dihyrofolate reductase in Mtb (mt-DHFR) is believed to be an important drug target in anti-TB drug development. This enzyme contains a glycerol (GOL) binding site, which is assumed to be a useful site to improve the selectivity towards human dihyrofolate reductase (h-DHFR). There have been previous attempts to design drugs targeting the GOL binding site, but the designed compounds contain a hydrophilic group, which may prevent the compounds from crossing the cell wall of Mtb to function at the whole cell level...
September 22, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28937175/chiral-six-coordinate-dy-iii-and-tb-iii-complexes-of-an-achiral-ligand-structure-fluorescence-and-magnetism
#5
Mei-Jiao Liu, Juan Yuan, Yi-Quan Zhang, Hao-Ling Sun, Cai-Ming Liu, Hui-Zhong Kou
Two new chiral six-coordinate lanthanide complexes (1 for Dy and 2 for Tb) have been synthesized using the achiral flexible ligand H2L (2,2'-[1,2-ethanediylbis[(methylimino)methylene]]bis[4,5-dimethylphenol]). Both complexes crystallize in the chiral P1 group space, and the enantiomers [Zn(L)Cl]3Dy·MeOH·0.5H2O (Λ-1), [Zn(L)Cl]3Dy·1.5H2O (Δ-1), [Zn(L)Cl]3Tb·1.5H2O (Λ-2) and [Zn(L)Cl]3Tb·H2O (Δ-2) are isolated in the reaction. Three [Zn(L)Cl](-) anions coordinate to the central lanthanide ion using two phenoxo oxygen atoms of L(2-), and the lanthanide ion has the coordination geometry of D3...
September 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28937171/unprecedented-family-of-heterometallic-ln-iii-18-metallacrown-6-complexes-syntheses-structures-and-magnetic-properties
#6
Wei Yang, Hua Yang, Su-Yuan Zeng, Da-Cheng Li, Jian-Min Dou
Herein, a new family of Ln(III)[18-metallacrown-6] compounds with the formula [Fe6O2Ln(tBu-sao)6(OH)(MeO)4(MeOH)(H2O)]·6MeOH [Ln = Dy(III) (1), Tb(III) (2), Gd(III) (3), and Y(III) (4), tBu-saoH2 = 3,5-di-tert-butylsalicylaldoxime] was synthesized through one-pot reactions using tBu-saoH2, Fe(ClO4)3·6H2O, and Ln(NO3)3·6H2O. The four compounds are isostructural, and the encapsulation of a Ln ion in the ring cavity of 18-metallacrown-6 (18-MC-6) was exhibited for the first time. The structural analysis shows a ship-like 18-MC-6 core with a beset lanthanide ion connecting six ring oxygen atoms (OMC)...
September 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28935874/concordant-and-discordant-gene-expression-patterns-in-mouse-strains-identify-best-fit-animal-model-for-human-tuberculosis
#7
Teresa Domaszewska, Lisa Scheuermann, Karin Hahnke, Hans Mollenkopf, Anca Dorhoi, Stefan H E Kaufmann, January Weiner
Immunity in infection, inflammation and malignancy differs markedly in man and mouse. Still, we learn about human immunity in large extent from experimental mouse models. We propose a novel data integration approach which identifies concordant and discordant gene expression patterns of the immune responses in heterologous data sets. We have conducted experiments to compare human and murine transcriptional responses to Mycobacterium tuberculosis (Mtb) infection in whole blood (WB) as well as macrophages and compared them with simulated as well as publicly available data...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28935575/non-pathological-infection-of-macaques-by-an-attenuated-mycobacterial-vaccine-is-not-reactivated-in-the-setting-of-hiv-coinfection
#8
Taylor Wayne Foreman, Ashley Victoria Veatch, Denae Nadine LoBato, Peter John Didier, Lara Angela Doyle-Meyers, Kasi Elizabeth Russell-Lodrigue, Andrew Alan Lackner, Konstantin Gus Kousoulas, Shabaana Abdul Khader, Deepak Kaushal, Smriti Mehra
Failure to replace BCG with efficacious anti-TB vaccines have prompted out-of-the-box thinking, including pulmonary vaccination in order to elicit local immunity. MtbΔsigH, a stress-response attenuated strain, protected against lethal TB when used to vaccinate macaques via inhalation. While live mycobacterial vaccines show promising efficacy, HIV co-infection and the resulting immunodeficiency prompts safety concerns about their use. We assessed the persistence and safety of MtbΔsigH, delivered directly to the lungs, in the setting of HIV coinfection...
September 18, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28935504/isolated-hepatic-tuberculosis-in-the-caudate-lobe-mimicking-intrahepatic-carcinoma
#9
Huanye Liu, Jiqiao Zhu, Hongmeng Dong, Ying Wang, Jun Ma, Jiantao Kou, Xianliang Li, Qiang He
Although tuberculosis (TB) remains a worldwide epidemic, isolated hepatic TB is an extremely rare entity and poorly described in the literature. Isolated hepatic TB may pose a diagnostic dilemma due to the non-specific clinical symptoms and imaging features. We present a case of a 54-year-old female with an isolated caseating granulomatous lesion at the caudate lobe of liver involving the pancreatic head.
September 18, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28935157/thermal-lysis-and-isothermal-amplification-of-mycobacterium-tuberculosis-h37rv-in-one-tube
#10
Prasad Shetty, Dipayan Ghosh, Debjani Paul
Tuberculosis (TB) is a leading cause of high mortality rates in developing countries. Sample preparation is one of the major challenges in developing an inexpensive point-of-care device for rapid and confirmed detection of tuberculosis. Existing chemical and mechanical lysis methods are unsuitable for field applications, as they require intermediate wash steps, manual intervention or separate lysis equipment. We report a one-step reaction protocol (65°C and 60min) for the H37Rv strain of Mycobacterium tuberculosis that (i) completely disinfects the mycobacteria culture, (ii) lyses the cells and (iii) performs helicase dependent amplification on the extracted DNA...
September 18, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28934901/association-of-ugt2b7-polymorphisms-with-risk-of-induced-liver-injury-by-anti-tuberculosis-drugs-in-chinese-han
#11
Guo Chen, Shou-Quan Wu, Mei Feng, Yu Wang, Jing-Can Wu, Gui-Yi Ji, Miao-Miao Zhang, Qian-Qian Liu, Jian-Qing He
Anti-tuberculosis drug-induced liver injury (ATLI) is common during the treatment of tuberculosis (TB). As an important enzyme in the metabolism of many drugs, UGT2B7 (uridine diphosphate glucuronyl transferase 2B7) was associated with drug-induced liver disorder. This study investigated the association between the polymorphisms of UGT2B7 and ATLI in Chinese Han. Totally, 280 newly diagnosed TB patients had been followed up for 3 months after the prescription of anti-TB therapy. Tag-single-nucleotide polymorphism (tag-SNPs) (rs10028494 and rs7668282) were genotyped with the MassARRAY platform...
September 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/28934701/hydrothermal-synthesis-of-4zno%C3%A2-b2o3%C3%A2-h2o-ln-3-ln-eu-tb-phosphors-morphology-tunable-and-luminescence-properties
#12
Shiwei Cao, Yang Jiao, Weifang Han, Chunhua Ge, Bo Song, Jie Wang, Xiangdong Zhang
4ZnO·B2O3·H2O:Ln(3+) (Ln=Eu, Tb) phosphors with different morphologies have been successfully synthesized via one-step hydrothermal method through regulating the molar amount of Eu(3+) and Tb(3+). Comprehensive scanning electron microscopy (SEM), X-ray diffraction (XRD) Fourier transform infrared spectrum (FT-IR) and inductively coupled plasma atomic emission spectrometer (ICP-AES) characterizations all confirm that obtained products are 4ZnO·B2O3·H2O:Ln(3+) (Ln=Eu, Tb). The experimental results displayed that the morphology and photoluminescence of compounds is regularly changed with increased the molar amount of rare earth ions...
September 18, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28934668/diabetes-mellitus-increased-all-cause-mortality-rate-among-newly-diagnosed-tuberculosis-patients-in-an-asian-population-a-nationwide-population-based-study
#13
Po-Yen Ko, Shi-Dou Lin, Ming-Chia Hsieh, Yu-Cheng Chen
AIMS: To investigate the effect of diabetes mellitus (DM) on all-cause mortality among patients with newly-diagnosed tuberculosis (TB) in an Asian population. We also identified risk factors for mortality in these patients. METHODS: The data were obtained from the National Health Insurance Research Database and included 9831 newly-diagnosed TB individuals and 1627 TB mortality cases in the period of 2000-2010. The mortality data were divided into a DM group and a non-DM group...
September 1, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28933485/synthesis-characterization-and-catalytic-epoxidation-properties-of-lanthanide-stabilized-peroxoisopolytungstates
#14
Jipeng Guo, Yanjun Niu, Lanying Song, Qiaofei Xu, Jingkun Lu, Pengtao Ma, Dongdi Zhang, Chao Zhang, Jingyang Niu, Jingping Wang
A series of new lanthanide-containing peroxoisopolyoxotungstates, K6Na4[H32{Ln4(WO4)(H2O)16[W7O22(O2)2]4}3]·105H2O [Ln = Ce(III) (1), Nd(III) (2), Sm(III) (3), Tb(III) (4), Er(III) (5)], have been successfully synthesized and structurally characterized. All polyanions [Ln(WO4)(H2O)16{W7O22(O2)2}4](14-) are isostructural and consist of a central [Ln(WO4)(H2O)16](10+) cluster surrounded by four peripheral [W7O22(O2)2](6-) units. They could act as efficient recyclable catalysts for the epoxidation of various alkenes including different cycloalkenes, styrene derivatives, internal and long-chain alkenes...
September 21, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28933243/drug-targets-in-dormant-mycobacterium-tuberculosis-can-the-conquest-against-tuberculosis-become-a-reality
#15
Vivek Kumar Gupta, M Madhan Kumar, Dharmendra Singh, Deepa Bisht, Shweta Sharma
Targeting M. tuberculosis (Mtb) in latent form of infection is a major obstacle and big challenge in tuberculosis (TB) eradication by current chemotherapy. A better understanding of the physiology of Mtb and of the metabolic state of the bacillus during the dormancy, is a primary need in finding drug targets against non replicating persistent (NRP) form of the Mtb. Identification of potential drug targets against dormant state of Mtb is critically important to achieve the goal of complete eradication for shortening of anti-TB therapy...
September 21, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28933123/-meta-analysis-of-yinzhihuang-oral-liquid-in-treatment-of-intrahepatic-cholestasis-of-pregnancy
#16
Jing-Jing Yan, Xiao-Ping Xia, Na Bu
To systematically review the clinical efficacy and safety of Yinzhihuang oral liquid in the treatment of intrahepatic cholestasis of pregnancy(ICP). Literatures published by June 2016 were searched in databases, such as Medline, Pubmed, Cochrane Library, China National Knowledge Infrastructure(CNKI), Chinese Scientific Journals Full-text Database(VIP), Chinese biomedical literature database(CBM), and Wanfang Database. Randomized controlled trials(RCT) of Yinzhihuang oral liquid were collected according to the inclusion criteria, and the methodological quality of selected literatures was evaluated...
December 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28932591/a-case-of-tuberculosis-reactivation-suspected-of-cancer-progression-during-oral-tyrosine-kinase-inhibitor-treatment-in-a-patient-diagnosed-as-non-small-cell-lung-cancer
#17
Hwa Young Lee, Jin Woo Kim, Chang Dong Yeo
We report a first case of a patient experiencing reactivation of pulmonary tuberculosis (TB) during treatment of oral tyrosine kinase inhibitor (TKI) with non-small cell lung cancer (NSCLC). A 44-year-old male patient visited the hospital with cough. He had been treated with erlotinib (oral TKI) for 8 months after being diagnosed as NSCLC with sensitive epidermal growth factor receptor mutation in our clinic. At initial chest imaging, the patient had fibroatelectatic calcified granuloma in the right upper lobe (RUL) apex as well as 1...
August 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28932419/crystal-structure-of-bis-acetato-%C3%AE%C2%BA-2-o-o-di-aqua-1-pyridin-2-yl-methyl-idene-%C3%AE%C2%BAn-2-pyridin-2-yl-%C3%AE%C2%BAn-hydrazine-%C3%AE%C2%BAn-1-terbium-iii-nitrate-monohydrate
#18
NDiaye Mbossé Gueye, Dieng Moussa, Elhadj Ibrahima Thiam, Aliou Hamady Barry, Mohamed Gaye, Pascal Retailleau
In the title compound, [Tb(C2H3O2)2(C11H10N4)(H2O)2]NO3·H2O, the Tb(3+) ion is nine-coordinated in a distorted tricapped trigonal-prismatic geometry by the three N atoms of the tridentate 1-(pyridin-2-yl-methyl-idene)-2-(pyridin-2-yl)hydrazine ligand, four carboxyl-ate O atoms of two chelating acetate groups and two O atoms of the coordinating water mol-ecules. The organic hydrazine ligand is disordered over two orientations with a refined occupancy ratio of 0.52 (3):0.48 (3). All bond lengths in the coordination environment of the Tb(3+) ion are slightly larger than those observed in the isostructural Y(3+) and Er(3+) complexes...
July 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28932351/abdominal-tuberculosis-is-there-a-role-for-surgery
#19
REVIEW
Elroy Patrick Weledji, Benjamin Thumamo Pokam
It is important that surgeons are familiar with the various manifestations of tuberculosis (TB). Although TB has been declining in incidence in the developed world, it remains an important problem in endemic areas of the developing world. The aim of the review was to elucidate the natural history and characteristics of abdominal TB and ascertain the indications for surgery. TB can affect the intestine as well as the peritoneum and the most important aspect of abdominal TB is to bear in mind the diagnosis and obtain histological evidence...
August 27, 2017: World Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28931830/circulating-mycobacterium-tuberculosis-dosr-latency-antigen-specific-polyfunctional-regulatory-il10-th17-cd4-t-cells-differentiate-latent-from-active-tuberculosis
#20
Srabanti Rakshit, Vasista Adiga, Soumya Nayak, Pravat Nalini Sahoo, Prabhat Kumar Sharma, Krista E van Meijgaarden, Anto Jesuraj Uk J, Chirag Dhar, George D Souza, Greg Finak, Stephen C De Rosa, Tom H M Ottenhoff, Annapurna Vyakarnam
The functional heterogeneity of T cell responses to diverse antigens expressed at different stages of Mycobacterium tuberculosis (Mtb) infection, in particular early secreted versus dormancy related latency antigens expressed later, that distinguish subjects with latent (LTBI), pulmonary (PTB) or extrapulmonary (EPTB) tuberculosis remains unclear. Here we show blood central memory CD4 T-cell responses specific to Mtb dormancy related (DosR) latency, but not classical immunodominant secretory antigens, to clearly differentiate LTBI from EPTB and PTB...
September 20, 2017: Scientific Reports
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