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https://www.readbyqxmd.com/read/29031042/humoral-and-cellular-immune-response-of-mice-challenged-with-yersinia-pestis-antigenic-preparations
#1
Elida A Leal, Josimar D Moreira, Fernanda F Nunes, Larissa R Souza, Janaina M Martins, Vicente P C Toledo, Alzira M P Almeida, Tania M P Guimarães
OBJECTIVES: The plague, which is an infectious disease caused by Yersinia pestis, still threatens many populations in several countries. The worldwide increase in human plague cases and the potential use of the bacteria as a biological weapon reinforce the need to study the immunity that is induced by potential vaccine candidates. To determine the immunogenicity of antigenic preparations based on the F1 protein and the total extract from Y. pestis, we assessed the role of these antigens in inducing an immune response...
October 11, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29028090/a-comparative-study-on-inflammatory-factors-and-immune-functions-of-lung-cancer-and-pulmonary-ground-glass-attenuation
#2
C-Y Liu, W-G Xie, S Wu, J-W Tian, J Li
OBJECTIVE: To compare the inflammatory factors and immune functions of patients with lung cancer and pulmonary ground-glass attenuation. PATIENTS AND METHODS: A total of 108 patients with pulmonary sarcoidosis treated in our hospital were selected and randomly divided into lung cancer group (Group A, n=32), diffuse ground-glass nodule group (Group B, n=35) and solitary ground-glass nodule group (Group C, n=41) according to the diagnosis results. Levels of inflammatory factors, tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6) and interleukin-10 (IL-10), in serum were detected via enzyme-linked immunosorbent assay (ELISA); the T-lymphocyte subset levels (CD3+, CD4+, CD8+ and CD4+/CD8+) in the immune system of patients in the three groups were detected using the flow cytometer; the levels of immunoglobulins, immunoglobulin G (IgG), immunoglobulin A (IgA) and immunoglobulin M (IgM), were detected via immunoturbidimetric assay...
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29026596/flow-cytometry-of-duodenal-intraepithelial-lymphocytes-improves-diagnosis-of-celiac-disease-in-difficult-cases
#3
Julio Valle, José Mario T Morgado, Juan Ruiz-Martín, Antonio Guardiola, Miriam Lopes-Nogueras, Almudena García-Vela, Beatriz Martín-Sacristán, Laura Sánchez-Muñoz
BACKGROUND: Diagnosis of celiac disease is difficult when the combined results of serology and histology are inconclusive. Studies using flow cytometry of intraepithelial lymphocytes (IELs) have found that celiac patients have increased numbers of γδ IELs, along with a decrease in CD3-CD103 + IELs. OBJECTIVE: The objective of this article is to assess the role of flow cytometric analysis of IELs in the diagnosis of celiac disease in difficult cases. METHODS: A total of 312 patients with suspicion of celiac disease were included in the study...
October 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/29023759/cord-blood-derived-t-cells-allow-the-generation-of-a-more-na%C3%A3-ve-tumor-reactive-cytotoxic-t-cell-phenotype
#4
Julian Kwoczek, Sebastian B Riese, Sabine Tischer, Szilvia Bak, Julia Lahrberg, Mathias Oelke, Holger Maul, Rainer Blasczyk, Martin Sauer, Britta Eiz-Vesper
BACKGROUND: Transplantation of hematopoietic stem cells (HSCs) from peripheral blood (PB) or cord blood (CB) is well established. HSCs from CB are associated with a lower risk of graft-versus-host disease (GVHD), but antigen-independent expanded CB- and PB-derived T cells can induce GVHD in allo-HSC recipients. CB-derived cells might be more suitable for adoptive immunotherapy as they have unique T-cell characteristics. Here, we describe functional differences between CB and PB T cells stimulated with different cytokine combinations involved in central T-cell activation...
October 11, 2017: Transfusion
https://www.readbyqxmd.com/read/29023581/activating-and-inhibitory-receptors-on-natural-killer-cells-in-patients-with-systemic-lupus-erythematosis-regulation-with-interleukin-15
#5
Syh-Jae Lin, Ming-Ling Kuo, Hsiu-Shan Hsiao, Pei-Tzu Lee, Ji-Yih Chen, Jing-Long Huang
Natural killer (NK) cells may play an important role in the pathogenesis of SLE. Interleukin(IL)-15, an NK-enhancing cytokine, is over-expressed in SLE patients. In the present study, we examined the effect of IL-15 on NK cytotoxicity of SLE patients, and the expression of various activating and inhibitory NK receptors on NK cells from SLE patients in relation to disease activity. We also sought to determine how IL-15 would affect the NK receptor expression on NK cells from SLE patients. PBMCs were collected from 88 SLE patients with inactive disease activity (SLEDAI score<6) and active disease activity (SLEDAI score≥6), 26 age-matched healthy adults were used as controls...
2017: PloS One
https://www.readbyqxmd.com/read/29021228/immune-reconstitution-and-survival-of-100-scid-patients-post-hematopoietic-cell-transplant-a-pidtc-natural-history-study
#6
Jennifer Heimall, Brent R Logan, Morton J Cowan, Luigi D Notarangelo, Linda M Griffith, Jennifer M Puck, Donald B Kohn, Michael A Pulsipher, Suhag Parikh, Caridad Martinez, Neena Kapoor, Richard O'Reilly, Michael Boyer, Sung-Yun Pai, Frederick Goldman, Lauri Burroughs, Sharat Chandra, Morris Kletzel, Monica Thakar, James Connelly, Geoff Cuvelier, Blachy Davila, Evan Shereck, Alan Knutsen, Kathleen E Sullivan, Kenneth DeSantes, Alfred Gillio, Elie Haddad, Aleksandra Petrovic, Troy Quigg, Angela R Smith, Elizabeth Stenger, Ziyan Yin, William T Shearer, Thomas Fleisher, Rebecca H Buckley, Christopher C Dvorak
The Primary Immune Deficiency Treatment Consortium (PIDTC) is enrolling children with severe combined immunodeficiency (SCID) to a prospective natural history study. We analyzed patients treated with allogeneic hematopoietic cell transplantation (HCT) from 2010-2014, including 68 with typical SCID and 32 with leaky SCID, Omenn Syndrome or Reticular Dysgenesis. Most (59%) were diagnosed by newborn screening or family history. The 2-year overall survival (OS) was 90%but was 95% for those infection-free at HCT vs...
October 11, 2017: Blood
https://www.readbyqxmd.com/read/29018834/in-situ-liver-expression-of-hbsag-cd3-bispecific-antibodies-for-hbv-immunotherapy
#7
Robert L Kruse, Thomas Shum, Xavier Legras, Mercedes Barzi, Frank P Pankowicz, Stephen Gottschalk, Karl-Dimiter Bissig
Current therapies against hepatitis B virus (HBV) do not reliably cure chronic infection, necessitating new therapeutic approaches. The T cell response can clear HBV during acute infection, and the adoptive transfer of antiviral T cells during bone marrow transplantation can cure patients of chronic HBV infection. To redirect T cells to HBV-infected hepatocytes, we delivered plasmids encoding bispecific antibodies directed against the viral surface antigen (HBsAg) and CD3, expressed on almost all T cells, directly into the liver using hydrodynamic tail vein injection...
December 15, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/29017923/lysophosphatidylserine-suppresses-il-2-production-in-cd4-t-cells-through-lps3-gpr174
#8
Yuji Shinjo, Kumiko Makide, Keita Satoh, Fumiya Fukami, Asuka Inoue, Kuniyuki Kano, Yuko Otani, Tomohiko Ohwada, Junken Aoki
Lysophosphatidylserine (LysoPS) has been shown to have lipid mediator-like actions to induce mast cell degranulation and suppress T lymphocyte proliferation. Recently, three G protein-coupled receptors (GPCRs), LPS1/GPR34, LPS2/P2Y10, and LPS3/GPR174, were found to react specifically with LysoPS, raising the possibility that LysoPS exerts its roles through these receptors. In this study, we show that LPS3 is expressed in various T cell subtypes and is involved in suppression of Interleukin-2 (IL-2) production in CD4 T cells...
October 7, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29017822/sub-optimal-primary-surgery-leads-to-unfavorable-immunological-changes-in-ovarian-cancer-patients
#9
Marek Nowak, Ewa Głowacka, Przemysław Lewkowicz, Małgorzata Banasik, Krzysztof Szyłło, Kinga Zimna, Katarzyna Bednarska, Magdalena Klink
Primary cytoreduction, followed by chemotherapy, is a standard treatment of patients with epithelial ovarian cancer (EOC). However, the effectiveness of this treatment depend on various elements e.g. type of operation. It is accepted that optimal surgery correlates with longer survival of patients. The other element, an efficiency of immune system after surgical intervention although important is less elucidated. The aim of this study was to establish the impact of optimal and sub-optimal operation on immunological status of EOC patients regarding also their overall survival (OS)...
October 5, 2017: Immunobiology
https://www.readbyqxmd.com/read/28994205/proteomics-and-network-analyses-reveal-inhibition-of-akt-mtor-signaling-in-cd4-t-cells-by-mycobacterium-tuberculosis-mannose-capped-lipoarabinomannan
#10
Ahmad F Karim, Obondo J Sande, Sara E Tomeckho, Xuedong Ding, Ming Li, Sean Maxwell, Rob M Ewing, Clifford V Harding, Roxana E Rojas, Mark R Chance, W Henry Boom
Mycobacterium tuberculosis (Mtb) cell wall glycolipid Mannose-capped Lipoarabinomannan (ManLAM) inhibits CD4(+) T cell activation by inhibiting proximal T cell receptor (TCR) signaling when activated by anti-CD3. To understand the impact of ManLAM on CD4(+) T cell function when both the TCR-CD3 complex and major co-stimulator CD28 are engaged, we performed label-free quantitative mass spectrometry (MS) and network analysis. Mixed effect model analysis of peptide intensity identified 149 unique peptides representing 131 proteins that were differentially regulated by ManLAM in anti-CD3 and anti-CD28 activated CD4(+) T cells...
October 10, 2017: Proteomics
https://www.readbyqxmd.com/read/28993778/potential-role-of-v%C3%AE-2-%C3%AE-%C3%AE-t-cells-in-regulation-of-immune-activation-in-primary-hiv-infection
#11
Nupur Bhatnagar, Pierre-Marie Girard, Moises Lopez-Gonzalez, Céline Didier, Lio Collias, Corinne Jung, Diane Bollens, Claudine Duvivier, Cassandre Von Platen, Daniel Scott-Algara, Laurence Weiss
Although conventional regulatory T cells (Tregs) are sufficient in controlling low residual T-cell activation in ART-treated patients, they are not efficient in controlling exaggerated immune activation associated with high levels of HIV replication in primary HIV infection (PHI). Our previous data suggested that double negative (DN) T cells including mainly γδ DN T cells play a role in the control of immune activation in PHI. Since γδ T cells are capable of exerting regulatory functions, we investigated their implication as Tregs in PHI as well as chronic HIV infection (CHI)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28991896/t-cell-regulation-in-erythema-nodosum-leprosum
#12
Edessa Negera, Steven L Walker, Kidist Bobosha, Rawleigh Howe, Abraham Aseffa, Hazel M Dokrell, Diana N Lockwood
Leprosy is a disease caused by Mycobacterium leprae where the clinical spectrum correlates with the patient immune response. Erythema Nodosum Leprosum (ENL) is an immune-mediated inflammatory complication, which causes significant morbidity in affected leprosy patients. The underlying cause of ENL is not conclusively known. However, immune-complexes and cell-mediated immunity have been suggested in the pathogenesis of ENL. The aim of this study was to investigate the regulatory T-cells in patients with ENL...
October 9, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28988523/immunopathology-in-drug-resistant-mesial-temporal-lobe-epilepsy-with-different-types-of-hippocampal-sclerosis
#13
F Irsel Tezer, Aysegul Firat, Erdem Tuzun, Isik Unal, Figen Soylemezoglu, Burcak Bilginer, Figen Kaymaz, Kader K Oguz, Serap Saygi
PURPOSE: There is evidence that autoimmunity has a specific role in temporal lobe seizures of limbic encephalitis patients. Our aim in this study was to investigate any histopathological clues of autoimmune process in refractory temporal lobe epilepsy (TLE) patients with different pathologically proven hippocampal sclerosis (HS) types. METHODS: 22 patients who had undergone to epilepsy surgery due to mesial TLE-HS were included. The sera of patients are tested for neuronal antibodies to NMDAR, LGI1, CASPR2, AMPAR, GABABR and GAD...
October 7, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28986576/fractional-laser-releases-tumor-associated-antigens-in-poorly-immunogenic-tumor-and-induces-systemic-immunity
#14
Masayoshi Kawakubo, Trevor J Cunningham, Shadmehr Demehri, Dieter Manstein
Currently ablative fractional photothermolysis (aFP) with CO2 laser is used for a wide variety of dermatological indications. This study presents and discusses the utility of aFP for treating oncological indications. We used a fractional CO2 laser and anti-PD-1 inhibitor to treat a tumor established unilaterally by the CT26 wild type (CT26WT) colon carcinoma cell line. Inoculated tumors grew significantly slower in aFP-treated groups (aFP and aFP + anti-PD-1 groups) and complete remission was observed in the aFP-treated groups...
October 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28986246/sphingosine-1-phosphate-alleviates-coxsackievirus-b3-induced-myocarditis-by-increasing-invariant-natural-killer-t-cells
#15
Xinggang Wang, Yong Yu, Minghui Li, Ying Yu, Guijian Liu, Yeqing Xie, Yuxi Liu, Xiangdong Yang, Yunzeng Zou, Junbo Ge, Ruizhen Chen
Sphingosine 1-phosphate (S1P), via binding to its specific receptors of S1PR1, participates in the regulation of both innate and adaptive immunity. Recent reports have identified S1P as a messenger mediating inflammation. However, roles of S1P in Coxsackievirus B3 (CVB3)-induced myocarditis were largely unknown. Here, we investigated the effect of S1P treatment on CVB3-induced myocarditis in vivo. We found that CVB3 infection downregulated S1PR1 expression in spleen and decreased the proportion of invariant natural killer T cells (iNKT) in CD3 positive T cells both in spleen and in blood from left ventricle, which accompanied by severe inflammation lesions and more virus capsid protein (VP1) expression in heart tissue...
October 3, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28986213/characterization-of-nuclear-factor-of-activated-t-cells-c3-nfatc3-and-gene-expression-of-upstream-downstream-signaling-molecules-in-response-to-immunostimulants-in-pacific-red-snapper-cells
#16
Carlos Angulo, Erika Alamillo, Felipe Ascencio, Martha Reyes-Becerril
The nuclear factor of activated T cells (NFAT) proteins have crucial roles in the development and function of the immune system since they not only regulate activation of T cells but are also involved in the control of thymocyte development and T-cell differentiation. In this study, NFATc3 was characterized from the Pacific red snapper, Lutjanus peru. LpNFAtc3, which contains an open reading of 3300 bp frame coding for a protein of 1100 aa with a predicted molecular weight of 118.52 kDa. The predicted protein showed a conserved NFAT family structure with signature motifs and domains, sharing high identity (up to 76%) compared to other fish sequences...
October 3, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28985996/tlr-induced-secretion-of-novel-cytokine-il-27-is-defective-in-newly-diagnosed-type-2-diabetic-subjects
#17
Haridoss Madhumitha, Viswanathan Mohan, Subash Babu, Vivekanandhan Aravindhan
Toll-like receptors (TLRs), the innate immune receptors, act as sentinels bridging both innate and adaptive arms of immunity. In the present study, we estimated TLR-induced secretion of IL-27, IL-12, IL-23, IL-8, IP-10, IL-17, IL-6 and TNF-α (by ELISA) and expression of Human Leukocyte Antigen- (Human Leukocyte Antigen - antigen D Related (HLA-DR), CD69, CD80 (also known asB7-1) (by flowcytometry) and Activating Transcription Factor 3(ATF3) (by qRT-PCR) in whole blood cultures of control and type-2 diabetic (both newly diagnosed/NDD and known/KDM) subjects...
October 3, 2017: Cytokine
https://www.readbyqxmd.com/read/28985621/circulating-cd4-cxcr5-t-cells-contribute-to-proinflammatory-responses-in-multiple-ways-in-coronary-artery-disease
#18
Ru Ding, Wenwu Gao, Zhiqing He, Feng Wu, Yang Chu, Jie Wu, Lan Ma, Chun Liang
Coronary artery disease (CAD) is a common subtype of cardiovascular disease. The major contributing event is atherosclerosis, which is a progressive inflammatory condition resulting in the thickening of the arterial wall and the formation of atheromatous plaques. Recent evidence suggests that circulating CD4(+)CXCR5(+) T cells can contribute to inflammatory reactions. In this study, the frequency, phenotype, and function of circulating CD4(+)CXCR5(+) T cells in CAD patients were examined. Data showed that circulating CD4(+)CXCR5(+) T cells in CAD patients were enriched with a PD-1(+)CCR7(-) subset, which was previously identified as the most potent in B cell help...
October 3, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28985196/inflammatory-stroma-of-lymphoepithelioma-like-carcinoma-of-the-cervix-immunohistochemical-study-of-3-cases-and-review-of-the-literature
#19
Amandine Philippe, Marc Rassy, Ligia Craciun, Céline Naveaux, Karen Willard-Gallo, Denis Larsimont, Isabelle Veys
The aim of this study was to characterize the inflammatory infiltrate of the lymphoepithelioma-like carcinoma, a variant of squamous cell carcinoma clinically associated with a good prognosis. Immunohistochemistry was used to characterize 3 cases of lymphoepithelioma-like carcinoma in the uterine cervix, diagnosed over a period of 3 yr. The patients were between 30 and 50 yr old. Their cervical smears had shown atypical squamous cells of unknown significance or high-grade squamous intraepithelial lesions, and the initial cervical biopsy showed high-grade cervical intraepithelial neoplasia (CIN3) or squamous cell carcinoma...
August 1, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28982264/de-novo-unclassifiable-cd20-negative-diffuse-large-b-cell-lymphoma-a-diagnostic-and-therapeutic-challenge
#20
Badr AbdullGaffar, Rania M Seliem
CD20-negative diffuse large B-cell lymphomas (DLBCLs) constitute a rare and heterogeneous group of aggressive lymphomas. Known well-documented variants include plasmablastic lymphomas, primary effusion lymphomas, anaplastic kinase-positive large B-cell lymphomas, and large B-cell lymphomas arising in human herpesvirus 8 (HHV8)-associated multicentric Castleman disease. They impose diagnostic challenges for pathologists and therapeutic confrontations for clinicians. CD20 loss in B-cell lymphomas is a well-known phenomenon after rituximab therapy...
October 1, 2017: International Journal of Surgical Pathology
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