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https://www.readbyqxmd.com/read/28538187/bivariate-genomic-footprinting-detects-changes-in-transcription-factor-activity
#1
Songjoon Baek, Ido Goldstein, Gordon L Hager
In response to activating signals, transcription factors (TFs) bind DNA and regulate gene expression. TF binding can be measured by protection of the bound sequence from DNase digestion (i.e., footprint). Here, we report that 80% of TF binding motifs do not show a measurable footprint, partly because of a variable cleavage pattern within the motif sequence. To more faithfully portray the effect of TFs on chromatin, we developed an algorithm that captures two TF-dependent effects on chromatin accessibility: footprinting and motif-flanking accessibility...
May 23, 2017: Cell Reports
https://www.readbyqxmd.com/read/28533248/impact-of-hiv-1-integrase-l74f-v75i-mutations-from-a-clinical-isolate-on-resistance-to-second-generation-integrase-strand-transfer-inhibitors
#2
Atsuko Hachiya, Karen A Kirby, Yoko Ido, Urara Shigemi, Masakazu Matsuda, Reiko Okazaki, Junji Imamura, Stefan G Sarafianos, Yoshiyuki Yokomaku, Yasumasa Iwatani
A novel HIV-1 integrase mutation pattern, L74F/V75I, which conferred resistance to first-generation integrase strand transfer inhibitors (INSTIs), was identified in a clinical case with virological failure under a raltegravir-based regimen. Addition of L74F/V75I to N155H or G140S/Q148H increased resistance levels to second-generation INSTIs, dolutegravir (>385-, 100-fold, respectively) and cabotegravir (153-, 197-fold, respectively). These findings are important for developing an accurate interpretation system of INSTI resistance and the rational design of next-generation INSTIs...
May 22, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28530082/-cervical-cancer-in-israel-2016-facts-insights-and-thoughts-for-the-future
#3
REVIEW
Menahem Fisher, Eduardo Schejter, Ido Solt, Gad Renart
The natural history of precancerous lesions and cervical cancer in Israeli women differs from that reported in the world. In 2011, 244 women were diagnosed in Israel with invasive cervical cancer, with the mortality of 79 women. The incidence of cervical cancer in Israel is about 5 new cases per year per 100,000 women (5.4 Jewish, 3.2 Arab). This figure is very low compared with statistics presented in other countries and has not changed over the last decades. The vast majority of Israeli women were diagnosed due to symptoms and not following Pap smear screening...
September 2016: Harefuah
https://www.readbyqxmd.com/read/28529635/synthesis-of-5-18-f-fluoro-%C3%AE-methyl-tryptophan-new-trp-based-pet-agents
#4
Benjamin C Giglio, Haiyang Fei, Mengzhe Wang, Hui Wang, Liu He, Huijuan Feng, Zhanhong Wu, Hongjian Lu, Zibo Li
Indoleamine 2,3-dioxygenase (IDO1) plays a special role in the biology of various cancer types, because it breaks down the essential amino acid tryptophan for immune cell activation. Upregulation of IDO1 significantly correlates with the number of various T cell types in tumor tissues in melanoma and other cancers, suggesting that IDO expression is linked with effective and ineffective ('exhausted') immune response in cancer. Based on the reported IDO inhibitors (α-Methylated and indole-N-methylated tryptophan (Trp)), here we report the synthesis of potential IDO1 imaging agents through direct introduction of (18)F into the tryptophan aromatic ring...
2017: Theranostics
https://www.readbyqxmd.com/read/28529072/rescue-of-il-1%C3%AE-induced-reduction-of-human-neurogenesis-by-omega-3-fatty-acids-and-antidepressants
#5
Alessandra Borsini, Silvia Alboni, Mark A Horowitz, Luis M Tojo, Giuseppe Cannazza, Kuan-Pin Su, Carmine M Pariante, Patricia A Zunszain
Both increased inflammation and reduced neurogenesis have been associated with the pathophysiology of major depression. We have previously described how interleukin-1 (IL-1) β,a pro-inflammatory cytokine increased in depressed patients, decreases neurogenesis in human hippocampal progenitor cells. Here, using the same human in vitro model, we show how omega-3 (ω-3) polyunsaturated fatty acids and conventional antidepressants reverse this reduction in neurogenesis, while differentially affecting the kynurenine pathway...
May 18, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28522271/medroxyprogesterone-acetate-drives-m2-macrophage-differentiation-toward-a-phenotype-of-decidual-macrophage
#6
Yung-Chieh Tsai, Joseph T Tseng, Chia-Yih Wang, Mei-Tsz Su, Jyun-Yuan Huang, Pao-Lin Kuo
M1 macrophage differentiation plays a crucial role in enhanced inflammation during pregnancy, which may lead to pregnancy complications. Therefore, modulation of macrophage differentiation toward the M2 phenotype is desirable to ensure a successful pregnancy. Medroxyprogesterone acetate (MPA) is a potent progestin with an anti-inflammatory property, but its effect on macrophage differentiation is unknown. This study aimed to examine whether MPA can induce an M2 macrophage differentiation by using the human monocytes cell line THP-1 or primary monocytes...
May 15, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28515923/expression-of-cxcr-4-and-ido-in-human-colorectal-cancer-an-immunohistochemical-approach
#7
Masaichi Ogawa, Michiaki Watanabe, Takuo Hasegawa, Kohei Ichihara, Kazuhiko Yoshida, Katsuhiko Yanaga
C-X-C chemokine receptor type 4 (CXCR4), the receptor for the chemokine stromal cell-derived factor (SDF)-1 [also known as C-X-C motif chemokine 12 (CXCL12)], is involved in lymphocyte trafficking. Recent studies have demonstrated that, during pregnancy, a placental enzyme called indoleamine 2, 3-dioxygenase (IDO) exerts a key role in suppressing the maternal T-cell response against the fetus. In the present study, the significance of CXCR4 and IDO expression in human colorectal cancer (CRC) has been investigated by immunohistochemical assay, and their association with survival was analyzed...
May 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28514690/genomic-characterization-of-murine-monocytes-reveals-c-ebp%C3%AE-transcription-factor-dependence-of-ly6c-cells
#8
Alexander Mildner, Jörg Schönheit, Amir Giladi, Eyal David, David Lara-Astiaso, Erika Lorenzo-Vivas, Franziska Paul, Louise Chappell-Maor, Josef Priller, Achim Leutz, Ido Amit, Steffen Jung
Monocytes are circulating, short-lived mononuclear phagocytes, which in mice and man comprise two main subpopulations. Murine Ly6C(+) monocytes display developmental plasticity and are recruited to complement tissue-resident macrophages and dendritic cells on demand. Murine vascular Ly6C(-) monocytes patrol the endothelium, act as scavengers, and support vessel wall repair. Here we characterized population and single cell transcriptomes, as well as enhancer and promoter landscapes of the murine monocyte compartment...
May 16, 2017: Immunity
https://www.readbyqxmd.com/read/28513255/successful-mechanical-thrombectomy-in-a-comatose-patient-with-cerebral-venous-sinus-thrombosis-a-case-report
#9
Merel Jj Verhagen, Adriaan Cgm van Es, Geert J Lycklama À Nijeholt, Korné Jellema, Jonathan Coutinho, Ido R van den Wijngaard
Cerebral venous sinus thrombosis is a rare cause of stroke, which is routinely treated with systemic heparin. Unfavourable outcome is often seen in severe cases. Therefore alternative treatment methods should be explored in these patients. Due to the risk of haemorrhagic complications, treatment without administration of thrombolytics is of particular interest. This report presents a case of successful mechanical thrombectomy, without the use of thrombolytics, in a comatose patient with cerebral venous sinus thrombosis...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28513120/gestational-weight-gain-and-its-relationship-with-maternal-characteristics
#10
Yeela Borenstein Ben Naftali, Ido Solt, Lior Lowenstein, Irit Chermesh
BACKGROUND: Both high and insufficient weight gain during pregnancy have been associated with adverse outcomes for mothers and their offspring. OBJECTIVES: To describe self-reported weight gain during pregnancy, assess the concurrence of this weight gain with issued recommendations, and investigate associations between lifestyle factors and weight gain. METHODS: In this cross-sectional study, 109 pregnant women hospitalized in one gynecological and obstetrics department completed questionnaires related to weight gain and lifestyle factors such as smoking, diet and exercise...
May 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28508612/the-longevity-hormone-klotho-is-a-new-player-in-the-interacion-of-the-growth-hormone-insulin-like-growth-factor-1-axis
#11
Tami Rubinek, Ido Wolf, Dalit Modan-Moses
Klotho was first discovered as an aging-suppressor gene. Mice that do not express klotho die prematurely with multiple symptoms of aging, several of which are also characteristic of decreased GH/IGF-1 axis activity. Klotho is highly expressed in the brain, the kidney, and parathyroid and pituitary glands, but can also serve as a circulating hormone by its shedding, forming soluble klotho (sKlotho) that can be detected in blood, cerebrospinal fluid and urine. Several lines of evidence suggest an association between klotho levels and activity of the GH/IHG-1 axis: The GH-secreting cells in the anterior pituitary of klotho-deficient mice are hypotrophic; klotho levels are altered in subjects with pathologies of the GH/IGF-1 axis; and accumulating data indicate that klotho is a direct regulator of GH secretion...
September 2016: Pediatric Endocrinology Reviews: PER
https://www.readbyqxmd.com/read/28508554/intestinal-epithelial-suppressor-of-cytokine-signaling-3-socs3-impacts-on-mucosal-homeostasis-in-a-model-of-chronic-inflammation
#12
Elisabeth J Shaw, Emily E Smith, Jayde Whittingham-Dowd, Matthew D Hodges, Kathryn J Else, Rachael J Rigby
INTRODUCTION: Suppressor of cytokine signaling 3 (SOCS3) is a tumour suppressor, limiting intestinal epithelial cell (IEC) proliferation in acute inflammation, and tumour growth, but little is known regarding its role in mucosal homeostasis. Resistance to the intestinal helminth Trichuris muris relies on an "epithelial escalator" to expel the parasite. IEC turnover is restricted by parasite-induced indoleamine 2,3-dioxygenase (IDO). METHODS: Mice with or without conditional knockout of SOCS3 were infected with T...
May 15, 2017: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/28506774/immunomodulatory-and-protective-effects-of-adipose-tissue-derived-mesenchymal-stem-cells-in-an-allograft-islet-composite-transplantation-for-experimental-autoimmune-type-1-diabetes
#13
Jamal Mohammadi Ayenehdeh, Bahare Niknam, Shim Rasouli, Seyed Mahmoud Hashemi, Hossein Rahavi, Nima Rezaei, Masoud Soleimani, Ali Liaeiha, Mohammad Hossein Niknam, Nader Tajik
BACKGROUND: Allogeneic islet transplantation could be an ideal alternative therapy for Type 1 Diabetes Mellitus (T1DM). Adipose Tissue-derived Mesenchymal Stem Cells (AT-MSCs) characterized by immunomodulatory and protective effects may have the potential to improve the outcome of this highly immunogenic transplant. METHODS: Syngenic AT-MSCs along with allograft islets embedded in hydrogelic composite and transplanted intraperitoneally in Streptozotocin (STZ) induced diabetic C57BL/6 mice...
May 12, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28502732/swimming-exercise-prevents-behavioural-disturbances-induced-by-an-intracerebroventricular-injection-of-amyloid-%C3%AE-1-42-peptide-through-modulation-of-cytokine-nf-kappab-pathway-and-indoleamine-2-3-dioxygenase-in-mouse-brain
#14
Leandro Cattelan Souza, Cristiano R Jesse, Lucian Del Fabbro, Marcelo de Gomes, André Tiago Rossito Goes, Carlos Borges Filho, Cristiane Luchese, Albanin Aparecida Mielniczki Pereira, Silvana Peterini Boeira
Emerging evidence indicates that the activation of indoleamine-2,3-dioxygenase (IDO), a first and rate-limiting enzyme in the kynurenine (KYN) pathway, is involved in amyloid-beta (Aβ1-42)-neurotoxicity and Alzheimer's disease (AD) pathogenesis. Physical exercise has been considered an effective intervention in AD, attenuating or limiting their progression. Nevertheless, the neurobiological mechanisms underlying the neuroprotective effects of exercise have not yet been fully elucidated. In present study, we investigated the protective effect of an 8-week swimming training (ST) exercise on cognitive and non-cognitive functions and its role in modulating biomarkers of KYN pathway, before an intracerebroventricular (i...
May 11, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28502504/high-density-lipoproteins-and-adrenal-steroidogenesis-a-population-based-study
#15
Edward Buitenwerf, Michiel N Kerstens, Thera P Links, Ido P Kema, Robin P F Dullaart
BACKGROUND: Cholesterol trafficked within plasma lipoproteins, in particular high-density lipoproteins (HDL), may represent an important source of cholesterol that is required for adrenal steroidogenesis. Based on a urinary gas chromatography method, compromised adrenal function has been suggested in men but not in women with (genetically determined) low plasma HDL-cholesterol (HDL-C). OBJECTIVE: The objective of the article was to examine the extent to which glucocorticoid production relates to HDL-C in a population-based cohort...
March 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28501391/long-term-visual-acuity-strabismus-and-nystagmus-outcomes-following-multimodality-treatment-in-group-d-retinoblastoma-eyes
#16
Ido D Fabian, Zishan Naeem, Andrew W Stacey, Tanzina Chowdhury, Catriona Duncan, M Ashwin Reddy, Mandeep S Sagoo
PURPOSE: To analyse the long-term visual acuity, strabismus and nystagmus outcomes in Group D retinoblastoma following multimodality treatments in a national retinoblastoma referral centre. DESIGN: Retrospective interventional case series. METHODS: A 13-year retrospective chart review of Group D eyes treated initially with intravenous chemotherapy (IVC) and followed-up for at least 1 year from last treatment. Risk factors for final visual acuity (VA) were analysed, and rate of strabismus and nystagmus at last follow-up visit were calculated...
May 10, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28500847/p53-prevent-tumor-invasion-and-metastasis-by-down-regulating-ido-in-lung-cancer
#17
Dongfang Tang, Lu Yue, Ruyong Yao, Lin Zhou, Yuqin Yang, Liming Lu, Wen Gao
In present study, we are to clear demonstrate the genetic evidence of IDO signaling's impact on invasion and metastasis in lung cancer. Here we examined IDO1 expression levels in non-small cell lung cancer (NSCLC) patients (64) tumor/normal pairs underwent RT-PCR and comprehensive histological, immunohistochemica and clinical analysis. The NSCLC cells stably expressing IDO1 was analyzed for migration and invasion assays and the regulatory mechanism in vitro and metastasis assays in vivo. As results, we reported that IDO1 expression increased by more than 3...
April 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28493408/monoubiquitination-joins-polyubiquitination-as-an-esteemed-proteasomal-targeting-signal
#18
REVIEW
Ido Livneh, Yelena Kravtsova-Ivantsiv, Ori Braten, Yong Tae Kwon, Aaron Ciechanover
A polyubiquitin chain attached covalently to the target substrate has been recognized for long as the "canonical" proteasomal degradation signal. However, several proteins have been shown to be targeted for degradation following monoubiquitination, indicating that the proteasome can recognize signals other than a ubiquitin polymer. A comprehensive screen aiming at determining the extent of this mode of recognition revealed that ∼40% of mammalian and ∼20% of yeast proteins are degraded following monoubiquitination...
May 11, 2017: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/28490533/the-tryptophan-kynurenine-pathway-systemic-inflammation-and-long-term-outcome-after-kidney-transplantation
#19
Laura V de Vries, Isidor Minovic, Casper Fm Franssen, Martijn van Faassen, Jan-Stephan F Sanders, Stefan P Berger, Gerjan Navis, Ido P Kema, Stephan Jl Bakker
BACKGROUND: Tryptophan is metabolized along the kynurenine pathway, initially to kynurenine, and subsequently to cytotoxic 3-hydroxykynurenine. There is increasing interest in this pathway, because of its pro-inflammatory nature, and drugs interfering in it receive increasing attention. We aimed to investigate whether serum and urinary parameters of the tryptophan-kynurenine pathway, and particularly cytotoxic 3-hydroxykynurenine, are associated with systemic inflammation and long-term outcome in renal transplant recipients (RTR)...
May 10, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28490020/maternal-inflammation-results-in-altered-tryptophan-metabolism-in-rabbit-placenta-and-fetal-brain
#20
Monica Williams, Zhi Zhang, Elizabeth Nance, Julia L Drewes, Wojciech G Lesniak, Sarabdeep Singh, Diane C Chugani, Kannan Rangaramanujam, David R Graham, Sujatha Kannan
Maternal inflammation has been linked to neurodevelopmental and neuropsychiatric disorders such as cerebral palsy, schizophrenia, and autism. We had previously shown that intrauterine inflammation resulted in a decrease in serotonin, one of the tryptophan metabolites, and a decrease in serotonin fibers in the sensory cortex of newborns in a rabbit model of cerebral palsy. In this study, we hypothesized that maternal inflammation results in alterations in tryptophan pathway enzymes and metabolites in the placenta and fetal brain...
May 11, 2017: Developmental Neuroscience
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