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https://www.readbyqxmd.com/read/29352770/concentration-dependent-effect-of-bleaching-agents-on-the-immunolabeling-of-interleukin-6-interleukin-17-and-cd5-positive-cells-in-the-dental-pulp
#1
F Benetti, J E Gomes-Filho, L L Ferreira, G Sivieri-Araújo, E Ervolino, A L F Briso, L T A Cintra
AIM: To evaluate lymphocyte-like cell activation (CD5-positive cells) and the expression of interleukin (IL)-6 and IL-17 in the pulp after dental bleaching with two concentrations of hydrogen peroxide (H2 O2 ). METHODOLOGY: The right and left maxillary molars from 40 rats were treated randomly with bleaching gel with 20% H2 O2 (BLUE group, 1 application of 50 min), 35% H2 O2 (MAXX group, 3 applications of 15 min), or placebo gel (Control). After 2 and 30 days, the rats were killed (n=10), and the jaws were processed for histological and immunohistochemistry analysis of the pulp tissue...
January 20, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29352747/clathrin-and-ap1-are-required-for-apical-sorting-of-gpi-aps-in-biosynthetic-and-recycling-routes-in-mdck-cells
#2
Guillaume Alain Castillon, Patricia Burriat-Couleru, Daniel Abegg, Nina Criado Santos, Reika Watanabe
Recently studies in animal models demonstrate potential roles for clathrin and AP1 in apical protein sorting in epithelial tissue. However, the precise functions of these proteins in apical protein transport remain unclear. Here, we reveal mis-targeting of endogenous GPI-APs and soluble secretory proteins in MDCK cells upon clathrin heavy chain or AP1 subunit knockdown (KD). Using a novel directional endocytosis and recycling assay, we found that these KD cells are not only affected for apical sorting of GPI-APs in biosynthetic pathway but also for their apical recycling and basal to apical transcytosis routes...
January 20, 2018: Traffic
https://www.readbyqxmd.com/read/29352744/crystal-structure-of-adp-dependent-glucokinase-from-methanocaldococcus-jannaschii-in-complex-with-5-iodotubercidin-reveals-phosphoryl-transfer-mechanism
#3
Piotr Tokarz, Magdalena Wiśniewska, Marcin M Kamiński, Grzegorz Dubin, Przemysław Grudnik
ADP-dependent glucokinase (ADPGK) is an alternative novel glucose phosphorylating enzyme in a modified glycolysis pathway of hyperthermophilic Archaea. In contrast to classical ATP-dependent hexokinases, ADPGK utilizes ADP as a phosphoryl group donor. Here we present a crystal structure of archaeal ADPGK from Methanocaldococcus jannaschii in complex with an inhibitor, 5-iodotubercidin, D-glucose, inorganic phosphate and a magnesium ion. Detailed analysis of the architecture of the active site allowed for confirmation of the previously proposed phosphorylation mechanism and the crucial role of the invariant arginine residue (Arg197)...
January 20, 2018: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/29352737/bronchiolitis-obliterans-syndrome-is-associated-with-increased-p-glycoprotein-expression-and-loss-of-glucocorticoid-receptor-from-steroid-resistant-pro-inflammatory-cd8-t-cells
#4
Greg Hodge, Sandra Hodge, Phan Tien Nguyen, Aeneas Yeo, Parama Sarkar, Arash Badiei, C L Holmes-Liew, Paul N Reynolds, Mark Holmes
Immunosuppressive therapy fails to suppress the production of pro-inflammatory cytokines, particularly by CD8+T cells, in stable lung transplant recipients and those undergoing chronic rejection, suggesting that some patients may become relatively resistant to immunosuppressants such as glucocorticoids (GC). We have shown loss of GC receptor (GCR) from the CD8+ cells, and we hypothesized that the drug membrane efflux pump, p-glycoprotein-1 (Pgp), may also be involved in lymphocyte steroid resistance following lung transplant...
January 20, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29352732/long-term-effects-of-crizotinib-in-alk-positive-tumors-excluding-nsclc-a-phase-1b-open-label-study
#5
Carlo Gambacorti-Passerini, Sergey Orlov, Li Zhang, Fadi Braiteh, Huiqiang Huang, Taito Esaki, Keizo Horibe, Jin-Seok Ahn, Joseph T Beck, William Jeffrey Edenfield, Yuankai Shi, Matthew Taylor, Kenji Tamura, Brian A Van Tine, Shang-Ju Wu, Jolanda Paolini, Paulina Selaru, Tae Min Kim
Crizotinib, an inhibitor of anaplastic lymphoma kinase (ALK), MET, and ROS1, is approved for treatment of patients with ALK-positive or ROS1-positive advanced non-small-cell lung cancer (NSCLC). However, ALK rearrangements are also implicated in other malignancies, including anaplastic large-cell lymphoma and inflammatory myofibroblastic tumors (IMTs). In this ongoing, multicenter, single-arm, open-label phase 1b study (PROFILE 1013; NCT01121588), patients with ALK-positive advanced malignancies other than NSCLC were to receive a starting dose of crizotinib 250 mg twice daily...
January 20, 2018: American Journal of Hematology
https://www.readbyqxmd.com/read/29352723/which-hiv-infected-adults-with-high-cd4-t-cell-counts-benefit-most-from-immediate-initiation-of-antiretroviral-therapy-a-post-hoc-subgroup-analysis-of-the-start-trial
#6
Jean-Michel Molina, Birgit Grund, Fred Gordin, Ian Williams, Mauro Schechter, Marcello Losso, Matthew Law, Ernest Ekong, Noluthando Mwelase, Athanasios Skoutelis, Martin J Wiselka, Linos Vandekerckhove, Thomas Benfield, David Munroe, Jens D Lundgren, James D Neaton
BACKGROUND: Immediate initiation of antiretroviral therapy (ART) in asymptomatic adults with CD4 counts higher than 500 cells per μL, as recommended, might not always be possible in resource-limited settings. We aimed to identify subgroups of individuals who would benefit most from immediate treatment. METHODS: The START trial was a randomised controlled trial in asymptomatic, HIV-positive adults previously untreated with ART. Participants with CD4 counts higher than 500 cells per μL were randomly assigned to receive immediate ART or to defer ART until CD4 counts were lower than 350 cells per μL...
January 15, 2018: Lancet HIV
https://www.readbyqxmd.com/read/29352713/clinical-variables-associated-with-overall-survival-in-metastatic-castration-resistant-prostate-cancer-patients-treated-with-sipuleucel-t-immunotherapy
#7
Xiao X Wei, Jaselle Perry, Emily Chang, Li Zhang, Robert A Hiatt, Charles J Ryan, Eric J Small, Lawrence Fong
BACKGROUND: Sipuleucel-T is an autologous cell-based cancer immunotherapy for men with asymptomatic or minimally symptomatic metastatic castration-resistant prostate cancer (mCRPC). Its approval by the Food and Drug Administration was based on demonstration of an overall survival (OS) benefit in randomized placebo-controlled phase III trials. However, treatment was associated with a prostate-specific antigen (PSA) decline in only a small minority of patients. Understanding the clinical factors that are associated with OS could help guide treatment decisions, including patient selection and the timing of sipuleucel-T relative to other therapies...
December 27, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/29352630/surgical-damage-to-the-lymphatic-system-promotes-tumor-growth-via-impaired-adaptive-immune-response
#8
Yoshiyuki Nakamura, Yasuhiro Fujisawa, Naoko Okiyama, Rei Watanabe, Ryota Tanaka, Yosuke Ishitsuka, Hideaki Tahara, Manabu Fujimoto
BACKGROUND: Both lymph nodes (LNs) and lymphatic channels from primary sites to regional LNs are critical for initiation of adaptive immunity. However, as LNs are common metastatic sites in skin cancers, LN biopsies or dissections are frequently performed. In addition, reconstructive skin flaps after tumor resection may damage lymphatic flow from primary sites to regional LNs. OBJECTIVE: This study was designed to investigate the effect on tumor progression by such surgeries...
December 29, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29352515/principles-of-alemtuzumab-immunoablation-in-hematopoietic-cell-transplantation-for-non-malignant-diseases-in-children-a-review
#9
REVIEW
Gregory M T Guilcher, Ravi Shah, Shalini Shenoy
Alemtuzumab is a humanized mAb targeted to CD52. Alemtuzumab is highly immunosuppressive with the ability to deplete T and B cells (in addition to other immune cell lines). A growing understanding of the PKs, dosing, and timing of administration of alemtuzumab has allowed for the study of its use as a conditioning agent for allogeneic HCT. The highly immunosuppressive properties of the drug are particularly appealing in the setting of non-malignant HCT, where GVHD provides no clinical benefit and relapse of malignancy is not applicable...
January 19, 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29352500/characterization-of-skin-blister-fluids-from-children-with-epstein-barr-virus-associated-lymphoproliferative-disease
#10
Taizo Wada, Tomoko Toma, Hanae Miyazawa, Eiko Koizumi, Tetsujiro Shirahashi, Yusuke Matsuda, Akihiro Yachie
Epstein-Barr virus (EBV)-associated T- or natural killer (NK)-cell lymphoproliferative disease (LPD) is a heterogeneous group of disorders characterized by chronic proliferation of EBV-infected lymphocytes. Patients may present with severe skin manifestations, including hypersensitivity to mosquito bites (HMB) and hydroa vacciniforme (HV)-like eruption, which are characterized by blister formation and necrotic ulceration. Skin biopsy specimens show inflammatory reactions comprising EBV-infected lymphocytes...
January 20, 2018: Journal of Dermatology
https://www.readbyqxmd.com/read/29352448/mesenchymal-stem-cell-deformability-and-implications-for-microvascular-sequestration
#11
Herbert H Lipowsky, Daniel T Bowers, Britany L Banik, Justin L Brown
Mesenchymal stem cells (MSCs) have received considerable attention in regenerative medicine, particularly in light of prospects for targeted delivery by intra-arterial injection. However, little is known about the mechanics of MSC sequestration in the microvasculature and the yield pressure (PY), above which MSCs will pass through microvessels of a given diameter. The objectives of the current study were to delineate the dependency of PY on cell size and the heterogeneity of cell mechanical properties and diameters (DCELL) of cultured MSCs...
January 19, 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29352427/preserved-in-vitro-immunoreactivity-in-children-receiving-long-term-immunosuppressive-therapy-due-to-inflammatory-bowel-disease-or-autoimmune-hepatitis
#12
Teresa Schleker, Eva-Maria Jacobsen, Benjamin Mayer, Gudrun Strauss, Klaus-Michael Debatin, Carsten Posovszky
BACKGROUND: Children with inflammatory bowel disease (IBD) or autoimmune hepatitis (AIH) are at risk for severe infections. This is partially a result of their chronic disease condition but, moreover, a side effect of their immunosuppressive therapy. Currently, vaccinations with live vaccines are regarded as contraindicated under immunosuppressive therapy, mainly because of concerns about side effects and a lack of data showing an adequate immune reaction. As there is no systematic study on the individual immunoreactivity under immunosuppressive therapy in this patient group, we analyzed the lymphocyte subgroups and immunoreactivity of lymphocytes in children with IBD or AIH with and without immunosuppressive therapy in vitro...
January 19, 2018: Molecular and Cellular Pediatrics
https://www.readbyqxmd.com/read/29352387/current-perspectives-on-erythema-multiforme
#13
REVIEW
Marianne Lerch, Carlo Mainetti, Benedetta Terziroli Beretta-Piccoli, Thomas Harr
Recognition and timely adequate treatment of erythema multiforme remain a major challenge. In this review, current diagnostic guidelines, potential pitfalls, and modern/novel treatment options are summarized with the aim to help clinicians with diagnostic and therapeutic decision-making. The diagnosis of erythema multiforme, that has an acute, self-limiting course, is based on its typical clinical picture of targetoid erythematous lesions with predominant acral localization as well as histological findings...
January 19, 2018: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/29352371/innate-and-adaptive-t-cells-in-influenza-disease
#14
REVIEW
Simone Nüssing, Sneha Sant, Marios Koutsakos, Kanta Subbarao, Thi H O Nguyen, Katherine Kedzierska
Influenza is a major global health problem, causing infections of the respiratory tract, often leading to acute pneumonia, life-threatening complications and even deaths. Over the last seven decades, vaccination strategies have been utilized to protect people from complications of influenza, especially groups at high risk of severe disease. While current vaccination regimens elicit strain-specific antibody responses, they fail to generate cross-protection against seasonal, pandemic and avian viruses. Moreover, vaccines designed to generate influenza-specific T-cell responses are yet to be optimized...
January 20, 2018: Frontiers of Medicine
https://www.readbyqxmd.com/read/29352298/hexokinase-ii-may-be-dispensable-for-cd4-t-cell-responses-against-a-virus-infection
#15
Siva Karthik Varanasi, Ujjaldeep Jaggi, Nissim Hay, Barry T Rouse
Activation of CD4 T cells leads to their metabolic reprogramming which includes enhanced glycolysis, catalyzed through hexokinase enzymes. Studies in some systems indicate that the HK2 isoform is the most up regulated isoform in activated T cells and in this report the relevance of this finding is evaluated in an infectious disease model. Genetic ablation of HK2 was achieved in only T cells and the outcome was evaluated by measures of T cell function. Our results show that CD4 T cells from both HK2 depleted and WT animals displayed similar responses to in vitro stimulation and yielded similar levels of Th1, Treg or Th17 subsets when differentiated in vitro...
2018: PloS One
https://www.readbyqxmd.com/read/29352292/rna-seq-of-kaposi-s-sarcoma-reveals-alterations-in-glucose-and-lipid-metabolism
#16
For Yue Tso, Andrew V Kossenkov, Salum J Lidenge, Owen Ngalamika, John R Ngowi, Julius Mwaiselage, Jayamanna Wickramasinghe, Eun Hee Kwon, John T West, Paul M Lieberman, Charles Wood
Kaposi's sarcoma-associated herpesvirus (KSHV) is the etiologic agent of Kaposi's sarcoma (KS). It is endemic in a number of sub-Saharan African countries with infection rate of >50%. The high prevalence of HIV-1 coupled with late presentation of advanced cancer staging make KS the leading cancer in the region with poor prognosis and high mortality. Disease markers and cellular functions associated with KS tumorigenesis remain ill-defined. Several studies have attempted to investigate changes of the gene profile with in vitro infection of monoculture models, which are not likely to reflect the cellular complexity of the in vivo lesion environment...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29352287/ifn%C3%AE-inhibits-g-csf-induced-neutrophil-expansion-and-invasion-of-the-cns-to-prevent-viral-encephalitis
#17
Chandran Ramakrishna, Edouard M Cantin
Emergency hematopoiesis facilitates the rapid expansion of inflammatory immune cells in response to infections by pathogens, a process that must be carefully regulated to prevent potentially life threatening inflammatory responses. Here, we describe a novel regulatory role for the cytokine IFNγ that is critical for preventing fatal encephalitis after viral infection. HSV1 encephalitis (HSE) is triggered by the invasion of the brainstem by inflammatory monocytes and neutrophils. In mice lacking IFNγ (GKO), we observed unrestrained increases in G-CSF levels but not in GM-CSF or IL-17...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29352220/soce-induced-calcium-overload-regulates-autophagy-in-acute-pancreatitis-via-calcineurin-activation
#18
Zhen-Dong Zhu, Tao Yu, Hua-Jing Liu, Jing Jin, Jun He
Acute pancreatitis (AP) is an acute inflammatory process of the pancreas that is characterized by inflammation, edema, vacuolization and necrosis, which has significant morbidity and lethality. The pathogenesis of AP has not been established completely. An early and critical feature of AP is the aberrant signaling of Calcium (Ca2+) within the pancreatic acinar cell, termed Ca2+ overload. Store-operated Ca2+ (SOC) channels are the principal Ca2+ influx channels that contribute to Ca2+ overload in pancreatic acinar cells...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29352190/autophagy-promotes-msc-mediated-vascularization-in-cutaneous-wound-healing-via-regulation-of-vegf-secretion
#19
Y An, W J Liu, P Xue, Y Ma, L Q Zhang, B Zhu, M Qi, L Y Li, Y J Zhang, Q T Wang, Y Jin
Vascularization deficiency caused a lot of diseases, such as diabetes ulcer and myocardial infarction. Mesenchymal stem cells (MSCs), with the self-renewal and multipotent differentiation capacities, have been used for many diseases treatment through regulation microenvironment. Numerous studies reported that MSCs transplantation could largely improve cutaneous wound healing via paracrine secretion of growth factors. However, whether MSCs take part in the angiogenesis process directly remains elusive. Previous study proved that autophagy inhibited immunosuppressive function of MSCs and prevented the degradation of MSCs function in inflammatory and senescent microenvironment...
January 19, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29352186/glycolysis-promotes-caspase-3-activation-in-lipid-rafts-in-t-cells
#20
Michael A Secinaro, Karen A Fortner, Oliver Dienz, Angela Logan, Michael P Murphy, Vikas Anathy, Jonathan E Boyson, Ralph C Budd
Resting T cells undergo a rapid metabolic shift to glycolysis upon activation in the presence of interleukin (IL)-2, in contrast to oxidative mitochondrial respiration with IL-15. Paralleling these different metabolic states are striking differences in susceptibility to restimulation-induced cell death (RICD); glycolytic effector T cells are highly sensitive to RICD, whereas non-glycolytic T cells are resistant. It is unclear whether the metabolic state of a T cell is linked to its susceptibility to RICD. Our findings reveal that IL-2-driven glycolysis promotes caspase-3 activity and increases sensitivity to RICD...
January 19, 2018: Cell Death & Disease
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