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https://www.readbyqxmd.com/read/28801276/transferability-of-antimicrobial-resistance-from-multidrug-resistant-escherichia-coli-isolated-from-cattle-in-the-united-states-to-escherichia-coli-and-salmonella-newport-recipients
#1
T L Poole, T R Callaway, K N Norman, H M Scott, G H Loneragan, S A Ison, R C Beier, D M Harhay, B Norby, D J Nisbet
OBJECTIVE: To evaluate conjugative transfer of cephalosporin resistance among (n=100) strains of multi-drug resistant Escherichia coli (MDRE) to Salmonella Newport and E. coli DH5α recipients. METHODS: Phenotypic and genotypic profiles were determined for MDRE, Salmonella Newport (trSN) and E. coli DH5α (trDH) transconjugants. RESULTS: Twenty-seven percent (n=26) and 28% (n=27) of (n=95) MDR E. coli donor isolates transferred resistance to trSN and trDH recipient isolates, respectively...
August 8, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/28777210/rapamycin-prolongs-graft-survival-and-induces-cd4-ifn-%C3%AE-il-10-regulatory-type-1-cells-in-old-recipient-mice
#2
Markus Quante, Timm Heinbokel, Karoline Edtinger, Koichiro Minami, Hirofumi Uehara, Yeqi Nian, Haruhito Azuma, Reza Abdi, Abdallah Elkhal, Stefan G Tullius
BACKGROUND: Although the elderly represents a rapidly growing population among transplant recipients, age-specific aspects have not been considered sufficiently in clinical trials. Moreover, age-specific effects of immunosuppressive therapies remain poorly understood. METHODS: Here, we assessed the impact of Rapamycin on alloimmune responses in old recipients using a fully MHC-mismatched murine transplantation model. RESULTS: Old untreated recipients displayed a prolonged skin graft survival compared to their young counterparts, an observation that confirmed data of our previous experiments...
August 2, 2017: Transplantation
https://www.readbyqxmd.com/read/28776162/treatment-for-negative-symptoms-in-schizophrenia-a-comprehensive-review
#3
REVIEW
Selene R T Veerman, Peter F J Schulte, Lieuwe de Haan
Negative symptoms (such as amotivation and diminished expression) associated with schizophrenia are a major health concern. Adequate treatment would mean important progress with respect to quality of life and participation in society. Distinguishing primary from secondary negative symptoms may inform treatment options. Primary negative symptoms are part of schizophrenia. Well-known sources of secondary negative symptoms are psychotic symptoms, disorganisation, anxiety, depression, chronic abuse of illicit drugs and alcohol, an overly high dosage of antipsychotic medication, social deprivation, lack of stimulation and hospitalisation...
August 3, 2017: Drugs
https://www.readbyqxmd.com/read/28760575/genotoxicity-induced-by-monomethylarsonous-acid-mma-3-in-mouse-thymic-developing-t-cells
#4
Huan Xu, Sebastian Medina, Fredine T Lauer, Christelle Douillet, Ke Jian Liu, Miroslav Stýblo, Scott W Burchiel
Drinking water exposure to arsenic is known to cause immunotoxicity. Our previous studies demonstrated that monomethylarsonous acid (MMA(+3)) was the major arsenical species presented in mouse thymus cells after a 30 d drinking water exposure to arsenite (As(+3)). MMA(+3) was also showed to be ten times more toxic than As(+3) on the suppression of IL-7/STAT5 signaling in the double negative (DN) thymic T cells. In order to examine the genotoxicity induced by low to moderate doses of MMA(+3), isolated mouse thymus cells were treated with 5, 50 and 500nMMMA(+3) for 18h in vitro...
July 29, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28758877/the-effects-of-metal-ion-contaminants-on-the-double-stranded-dna-helix-and-diseases
#5
T Theophanides, J Anastassopoulou
Mineral metal ions are essential for the maintenance of the reactions that regulate homeostasis and the functions of our body. It is known that the regulation of the neurodegenerative system depends directly on life metal ions, such as Na, K, Mg, Ca, Fe, Mo, Cu, Co, Zn, Cr, Mn, while the toxic metals Cd, Pb, Hg, etc disturb homeostasis, leading to diseases. Particularly significant is the effect of toxic metals on the double stranded forms of DNA and conformations. It was found that the toxic metal ions by reacting specifically with the nucleic bases and electrostatically with the negatively phosphate groups of the DNA backbone cause changes in the structure of the DNA double helix, leading to breaks of single or double strands...
July 31, 2017: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/28756897/role-of-cd11c-t-bet-b-cells-in-human-health-and-disease
#6
REVIEW
Jodi L Karnell, Varsha Kumar, Jingya Wang, Shu Wang, Elisaveta Voynova, Rachel Ettinger
A growing body of evidence suggests that when B cells are chronically stimulated, a phenotypically unique subset expands. Data suggest that this atypical population contains B cell receptor (BCR) specificities capable of binding the antigen, or sets of antigens that initiated the expansion of these cells. These B cells have been given various names, including double negative B cells, atypical memory B cells, tissue-like memory B cells, or age associated B cells (ABCs). However, on close inspection these reports described B cell subsets that closely resemble B cells we refer to as CD11c(+) B cells that often express T-bet...
July 11, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28753595/clinico-biological-significance-of-suppressor-of-cytokine-signaling-1-expression-in-acute-myeloid-leukemia
#7
H-A Hou, J-W Lu, T-Y Lin, C-H Tsai, W-C Chou, C-C Lin, Y-Y Kuo, C-Y Liu, M-H Tseng, Y-C Chiang, Y-L Peng, J-L Tang, Z Gong, L-I Lin, H-F Tien
Suppressor of cytokine signaling 1 (SOCS1) protein, which encodes a member of signal transducers and activators of transcription-induced inhibitors, takes part in a negative regulation of cytokine signaling. The mechanism of SOCS1 in tumor carcinogenesis is complex and there have been no studies concerning the clinic-biologic implication of SOCS1 expression in acute myeloid leukemia (AML). Here, we first identified that higher bone marrow (BM) SOCS1 expression was closely associated with older age, FLT3-ITD, NPM1 and DNMT3A mutations, but negatively correlated with CEBPA mutation in patients with de novo AML...
July 28, 2017: Blood Cancer Journal
https://www.readbyqxmd.com/read/28745324/a-committed-postselection-precursor-to-natural-tcr%C3%AE-%C3%AE-intraepithelial-lymphocytes
#8
Christoph S N Klose, Jonas F Hummel, Lena Faller, Yannick d'Hargues, Karolina Ebert, Yakup Tanriver
The intestine is a major immune organ with several specialized lymphoid structures and immune cells. Among these are thymus-derived natural intraepithelial lymphocytes (IELs) that lack expression of the classical co-receptors CD4 or CD8αβ (double negative (DN)). Natural IELs are both αβ(+) and γδ(+) T cells that play important roles in the maintenance of the epithelial barrier at steady state and during inflammation. The transcription factor T-bet is essential for the peripheral development of natural IELs, but its role during thymic development has remained less clear...
July 26, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28743810/polymyxin-combinations-combat-escherichia-coli-harboring-mcr-1-and-blandm-5-preparation-for-a-postantibiotic-era
#9
Zackery P Bulman, Liang Chen, Thomas J Walsh, Michael J Satlin, Yuli Qian, Jürgen B Bulitta, Charles A Peloquin, Patricia N Holden, Roger L Nation, Jian Li, Barry N Kreiswirth, Brian T Tsuji
The rapid increase of carbapenem resistance in Gram-negative bacteria has resurrected the importance of the polymyxin antibiotics. The recent discovery of plasmid-mediated polymyxin resistance (mcr-1) in carbapenem-resistant Enterobacteriaceae serves as an important indicator that the golden era of antibiotics is under serious threat. We assessed the bacterial killing of 15 different FDA-approved antibiotics alone and in combination with polymyxin B in time-killing experiments against Escherichia coli MCR1_NJ, the first reported isolate in the United States to coharbor mcr-1 and a New Delhi metallo-β-lactamase gene (blaNDM-5)...
July 25, 2017: MBio
https://www.readbyqxmd.com/read/28735627/inhibition-of-indoleamine-2-3-dioxygenase-activity-by-fatty-acids-and-prostaglandins-a-structure-function-analysis
#10
M Costabile, N K Bassal, J P Gerber, B P Hughes
Indoleamine 2,3-dioxygenase-1 (IDO-1) catalyses the first and rate-limiting step in the metabolism of L-tryptophan. Degradation of L-Trp leads to the production of several immunosuppressive metabolites, including N-formyl kynurenine and kynurenine (Kyn). Apart from a normal physiological role, IDO-1 has also been identified to play a crucial role in immune suppression and tumour induced tolerance. Indeed, many primary tumours express high levels of IDO-1 compared to normal cells of the same stroma. IDO-1 is accepted as being an inducible negative regulator of T cell viability, proliferation and activation...
July 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28733484/cutting-edge-cd3-itam-diversity-is-required-for-optimal-tcr-signaling-and-thymocyte-development
#11
Matthew L Bettini, Po-Chein Chou, Clifford S Guy, Thomas Lee, Kate M Vignali, Dario A A Vignali
For the αβ or γδTCR chains to integrate extracellular stimuli into the appropriate intracellular cellular response, they must use the 10 ITAMs found within the CD3 subunits (CD3γε, CD3δε, and ζζ) of the TCR signaling complex. However, it remains unclear whether each specific ITAM sequence of the individual subunit (γεδζ) is required for thymocyte development or whether any particular CD3 ITAM motif is sufficient. In this article, we show that mice utilizing a single ITAM sequence (γ, ε, δ, ζa, ζb, or ζc) at each of the 10 ITAM locations exhibit a substantial reduction in thymic cellularity and limited CD4(-)CD8(-) (double-negative) to CD4(+)CD8(+) (double-positive) maturation because of low TCR expression and signaling...
July 21, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28724883/calcium-prepartions-do-not-inhibit-allergic-reactions-a-randomized-controlled-trial
#12
Klaudia Matysiak, Michał Matuszewski, Wojciech Feleszko
INTRODUCTION    Massive consumption of dietary supplements, including vitamins and minerals, has recently became a serious public issue in Europe. When ingested, they may negatively affect pharmacological activity of various medications, including anti-allergic drugs. Calcium preparations are well-known and commonly used in some European countries as a popular remedy for allergy-related skin reactions, such as itching, erythema and wheals, as well as insect bites. However, their action has not been reliably proven yet...
June 27, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28712009/analysis-of-molecular-subtypes-for-the-increased-her2-equivocal-cases-caused-by-application-of-the-updated-2013-asco-cap-her2-testing-guidelines-in-breast-cancer
#13
Lei Guo, Pei Yuan, Jing Zhang, Yun Ling, Wenbin Li, Bohui Zhao, Jianming Ying, Lixue Xuan
PURPOSE: Accurate testing of the status of human epidermal growth factor receptor type 2 (HER2) is a prerequisite for HER2-directed therapy. The American Society of Clinical Oncology (ASCO) and the College of American Pathologists (CAP) published joint guideline recommendations for HER2 testing in breast cancer in 2007 and it was updated in 2013. We compared the HER2 gene amplification status based on these two guidelines and analyzed the molecular characteristics of the equivocal cases...
July 15, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28710491/ageing-and-latent-cmv-infection-impact-on-maturation-differentiation-and-exhaustion-profiles-of-t-cell-receptor-gammadelta-t-cells
#14
Martine J Kallemeijn, Anne Mieke H Boots, Michèle Y van der Klift, Elisabeth Brouwer, Wayel H Abdulahad, Jan A N Verhaar, Jacques J M van Dongen, Anton W Langerak
Ageing is a broad cellular process, largely affecting the immune system, especially T-lymphocytes. Additionally to immunosenescence alone, cytomegalovirus (CMV) infection is thought to have major impacts on T-cell subset composition and exhaustion. These impacts have been studied extensively in TCRαβ+ T-cells, with reduction in naive, increase in effector (memory) subsets and shifts in CD4/CD8-ratios, in conjunction with morbidity and mortality in elderly. Effects of both ageing and CMV on the TCRγδ+ T-cell compartment remain largely elusive...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28697120/association-of-parasite-load-levels-in-amniotic-fluid-with-clinical-outcome-in-congenital-toxoplasmosis
#15
Lidia Yamamoto, Lília S Targa, Laura M Sumita, Paulo T Shimokawa, Jonatas C Rodrigues, Kelly A Kanunfre, Thelma S Okay
OBJECTIVE: To correlate neonatal and infant clinical outcome with parasite load in amniotic fluid (AF). METHODS: We conducted a retrospective cohort study of 122 children whose mothers had toxoplasmosis during pregnancy. The children were monitored from birth to 12 months old. Stored AF samples were obtained at maternal diagnosis and tested by quantitative polymerase chain reaction. Gestational age at maternal infection, quantitative polymerase chain reaction results, neonatal anti-Toxoplasma gondii immunoglobulin (Ig) M, and clinical outcome at 12 months were correlated...
August 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28687760/hypofractionated-stereotactic-radiation-therapy-activates-the-peripheral-immune-response-in-operable-stage-i-non-small-cell-lung-cancer
#16
Ting Zhang, Haifeng Yu, Chao Ni, Tao Zhang, Luying Liu, Qinghua Lv, Zhigang Zhang, Zhen Wang, Dang Wu, Pin Wu, Guodi Chen, Liancong Wang, Qichun Wei, Jian Huang, Xiaojian Wang
It has been reported that in patients with operable stage I non-small cell lung cancer (NSCLC), overall survival (OS) is better in those who undergo hypofractionated stereotactic radiation therapy (HSRT) than in those who undergo surgery. However, the reason that HSRT has a better OS has not been fully explored. Here, we analyzed reconstitution kinetics in immune cells in the peripheral blood of NSCLC patients after HSRT. We found that HSRT increased the frequency of total T cells, especially the proportion of CD8(+) T cells, but decreased the frequency of inhibitory Tregs...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28675386/unique-prefrontal-gaba-and-glutamate-disturbances-in-co-occurring-bipolar-disorder-and-alcohol-dependence
#17
J J Prisciandaro, B K Tolliver, A P Prescot, H M Brenner, P F Renshaw, T R Brown, R F Anton
Bipolar disorder (BD) and alcohol dependence (AD) frequently co-occur, and co-occurring BD and AD are associated with devastating public health costs. Minimal neurobiological research exists to guide the development of effective treatments for this treatment-resistant population. We believe the present study represents the first investigation of prefrontal gamma-aminobutyric acid (GABA) and glutamate levels in co-occurring BD and current AD. The participants were 78 individuals who met DSM-IV criteria for BD I/II and current AD (n=20), BD I/II alone (n=19), current AD alone (n=20) or no diagnosis (n=19)...
July 4, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28673384/testosterone-therapy-of-men-with-type-2-diabetes-mellitus-a-randomized-double-blinded-placebo-controlled-study
#18
Line Velling Magnussen
The prevalence of chronic diseases including obesity and type 2 diabetes mellitus (T2D) are increasing. The usage of testosterone replacement therapy (TRT) has escalated in the Western countries during the past decades especially in aging men without clear organic indication for TRT although the safety of long-term TRT has not been clarified regarding the risk of cardiovascular disease (CVD). Aging men with T2D have an increased risk of CVD and these patients are often characterized by lowered T-levels, ectopic fat depots, a deranged adipokine profile with e...
July 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28671687/recurrent-spi1-pu-1-fusions-in-high-risk-pediatric-t-cell-acute-lymphoblastic-leukemia
#19
Masafumi Seki, Shunsuke Kimura, Tomoya Isobe, Kenichi Yoshida, Hiroo Ueno, Yaeko Nakajima-Takagi, Changshan Wang, Lin Lin, Ayana Kon, Hiromichi Suzuki, Yusuke Shiozawa, Keisuke Kataoka, Yoichi Fujii, Yuichi Shiraishi, Kenichi Chiba, Hiroko Tanaka, Teppei Shimamura, Kyoko Masuda, Hiroshi Kawamoto, Kentaro Ohki, Motohiro Kato, Yuki Arakawa, Katsuyoshi Koh, Ryoji Hanada, Hiroshi Moritake, Masaharu Akiyama, Ryoji Kobayashi, Takao Deguchi, Yoshiko Hashii, Toshihiko Imamura, Atsushi Sato, Nobutaka Kiyokawa, Akira Oka, Yasuhide Hayashi, Masatoshi Takagi, Atsushi Manabe, Akira Ohara, Keizo Horibe, Masashi Sanada, Atsushi Iwama, Hiroyuki Mano, Satoru Miyano, Seishi Ogawa, Junko Takita
The outcome of treatment-refractory and/or relapsed pediatric T cell acute lymphoblastic leukemia (T-ALL) is extremely poor, and the genetic basis for this is not well understood. Here we report comprehensive profiling of 121 cases of pediatric T-ALL using transcriptome and/or targeted capture sequencing, through which we identified new recurrent gene fusions involving SPI1 (STMN1-SPI1 and TCF7-SPI1). Cases positive for fusions involving SPI1 (encoding PU.1), accounting for 3.9% (7/181) of the examined pediatric T-ALL cases, showed a double-negative (DN; CD4(-)CD8(-)) or CD8(+) single-positive (SP) phenotype and had uniformly poor overall survival...
August 2017: Nature Genetics
https://www.readbyqxmd.com/read/28668505/regulation-of-allergic-airway-inflammation-by-adoptive-transfer-of-cd4-t-cells-preferentially-producing-il-10
#20
Masaya Matsuda, Kana Doi, Tatsuya Tsutsumi, Shinya Fujii, Maki Kishima, Kazuma Nishimura, Ikue Kuroda, Yu Tanahashi, Rino Yuasa, Toshihiko Kinjo, Nobuyuki Kuramoto, Nobuaki Mizutani, Takeshi Nabe
Anti-inflammatory pharmacotherapy for asthma has mainly depended on the inhalation of glucocorticoids, which non-specifically suppress immune responses. If the anti-inflammatory cytokine interleukin (IL)-10 can be induced by a specific antigen, asthmatic airway inflammation could be suppressed when individuals are exposed to the antigen. The purpose of this study was to develop cellular immunotherapeutics for atopic diseases using IL-10-producing CD4(+) T cells. Spleen cells isolated from ovalbumin (OVA)-sensitized mice were cultured with the antigen, OVA and growth factors, IL-21, IL-27 and TGF-β for 7 days...
June 29, 2017: European Journal of Pharmacology
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