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Immunological Investigations

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https://www.readbyqxmd.com/read/28414590/reduction-in-cd16-cd56-and-cd16-cd3-cd56-natural-killer-cells-in-coronary-artery-disease
#1
Nasimudeen R Jabir, Chelapram K Firoz, Farid Ahmed, Mohammad A Kamal, Salwa Hindawi, Ghazi A Damanhouri, Hussein A Almehdar, Shams Tabrez
BACKGROUND: Natural killer (NK) cells are the potential modulators of inflammatory reactions that exert several unique biological effects and could lead to future adverse events of coronary artery disease (CAD). HYPOTHESIS: The purpose of this study was to find out the possible association of modulation in NK cell, TNK cells, T cells, B cells, and tumor necrosis factor alpha (TNF-α) in CAD patients and various forms of myocardial infarction. METHODS: The present study included total 190 subjects (98 confirmed CAD patients both men and women and 92 healthy control individuals)...
April 17, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28414589/progesterone-decreases-in-vitro-indoleamine-2-3-dioxygenase-expression-in-dendritic-and-cd4-cells-from-maternal-fetal-interface-of-rats
#2
Pedro Kastein Faria da Cunha Bianchi, Rafael Magdanelo Leandro, Aline Nayara Poscai, Tulio Yoshinaga, Patrícia Orlandini Gonçalez, José Roberto Kfoury Junior
PROBLEM: Several mechanisms contribute to the tolerogenic state observed during pregnancy, such as the activity of the enzyme indoleamine 2, 3-dioxygenase (IDO). This initializes the catabolism of tryptophan, inducing T cells to apoptosis due to its deprivation and by the action of its catabolites in the placental microenvironment. Progesterone plays an important part on immunological tolerance mechanisms during pregnancy; however, there is no evidence it is related to IDO activity. Thus, this study aimed to investigate progesterone influence on the maternal-fetal interface of pregnant Wistar rats, by identifying IDO positive cells by immunophenotyping and flow cytometry under exogenous progesterone supplementation...
April 17, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28414558/th17-inducing-conditions-lead-to-in-vitro-activation-of-both-th17-and-th1-responses-in-behcet-s-disease
#3
Rabia Deniz, Aysın Tulunay-Virlan, Filiz Ture Ozdemir, Ali Ugur Unal, Gulsen Ozen, Fatma Alibaz-Oner, Imren Aydin-Tatli, Gonca Mumcu, Tulin Ergun, Haner Direskeneli
OBJECTIVES: Interleukin-17 (IL-17) has been associated with the pathogenesis of various autoimmune/inflammatory diseases. The aim of this study was to investigate the expression of Th17-related immunity in an innate immunity-dominated vasculitis, namely Behcet's disease (BD). METHODS: Peripheral blood mononuclear cells from 37 patients (age: 38.5 ± 9.8 years) with BD, and 25 healthy controls (HC) (age: 39.1 ± 9.3 years), were cultured in Th17-inducing conditions (IL-6, Phytohemagglutinin (PHA), IL-1β, and IL-23) for 6 days...
April 17, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28388279/investigation-of-aid-dicer-and-drosha-expressions-in-patients-with-chronic-lymphocytic-leukemia
#4
Metin Yusuf Gelmez, Ender Coskunpinar, Basak Saracoglu, Gunnur Deniz, Melih Aktan
Chronic lymphocytic leukemia (CLL) is the most common leukemia in Western countries. Cytogenetic lesions such as del13q14, del11q22.3, and del17p13 are identified in 50-60% of patients. Activation-induced cytidine deaminase (AID) plays a central role in somatic hyper mutation (SHM) and class switch recombination (CSR) and functions on Ig genes, but also target non-Ig genes, and over-expression of AID can lead to point mutations or translocations in non-Ig genes such as IgH/Myc translocation. Dicer and Drosha, which have a role in activation process of miRNA, also act in a double-strand DNA break (DSB) repair mechanism...
April 7, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28388268/matrix-metalloproteinase-9-rs17576-gene-polymorphism-and-beh%C3%A3-et-s-disease-is-there-an-association
#5
Asmaa Kamal, Fatema T Elgengehy, Mohamed Momtaz Abd Elaziz, Sherif M Gamal, Nesreen Sobhy, Amira Medhat, Al Hussein M El Dakrony
BACKGROUND: Clinical studies have reported a significant association between matrix metalloproteinases (MMP), particularly (MMP-9), and inflammatory diseases including Behçet's disease (BD). PURPOSE: To study the relationship between MMP-9 rs17576 gene polymorphism and the development of BD, and its relation to disease activity among Egyptian patients. METHODS: A total of 100 BD patients and 100 healthy control volunteers were genotyped for MMP-9 rs17576 polymorphism with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP), followed by the confirmation of our results in random subgroups using direct DNA sequencing technique...
April 7, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28388249/natural-killer-cell-subsets-and-their-functional-activity-in-beh%C3%A3-et-s-disease
#6
Fulya Cosan, Esin Aktas Cetin, Nilgun Akdeniz, Zeliha Emrence, Ayse Cefle, Gunnur Deniz
BACKGROUND: Behçet's disease (BD) is a rare, chronic autoinflammatory disorder of unknown origin. Natural killer (NK) cells are one of the major immunoregulatory cell groups of the innate immune system, but their role in BD pathogenesis is not well documented. OBJECTIVES: We aimed to investigate the role of NK cell subsets and their cytokine secretion and cytotoxic activity in patients with BD. PATIENTS AND METHODS: The study group consisted of BD patients who had only mucocutaneous involvement, and they were compared with healthy subjects...
April 7, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28388234/variable-heavy-chain-domain-derived-from-a-cell-penetrating-anti-dna-monoclonal-antibody-for-the-intracellular-delivery-of-biomolecules
#7
Sun-Woo Im, Pavithra Pravinsagar, Sae-Ran Im, Young-Ju Jang
Targeting and modification of important intracellular proteins using efficient vehicles are invaluable in diagnostic and therapeutic fields. Cell-penetrating antibodies and their fragments can be utilized as vehicles for the delivery of modifiers into cells. In this study, we explored the applicability of variable heavy chain (VH) domain as delivery vehicles for mammalian cells. The characteristics of the recombinant VH domain produced from a cell-penetrating monoclonal anti-double stranded DNA antibody 2C10 were analyzed using flow cytometry, confocal microscopy, cell proliferation assay, and cell cycle analysis in various mammalian cell lines...
April 7, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28379053/influence-of-the-co-administration-of-heptavalent-conjugate-vaccine-pcv7-tt-on-the-immunological-response-elicited-by-va-mengoc-bc%C3%A2-and-heberpenta%C3%A2-l-in-rabbits
#8
Carlos Espinosa-Viñals, Dagmar García-Rivera, Laura Rodríguez Noda, Aylín Amador Gómez, Milagros Nicot, Orialys Valle, Juan F Núñez, Yanet Martin, Darielys Santana, Yury Valdés, Vicente Vérez Bencomo
Finlay Vaccine Institute is developing a new heptavalent conjugate vaccine against Streptococcus pneumoniae. As infants are the target population, PCV7-TT will be necessarily co-administered with other vaccines, and then, the interactions represent a concern. The aim of this work is to evaluate the possible immunological interferences in rabbits as animal experimental model. Rabbits were immunized with Heberpenta®-L, VA-MENGOC-BC®, and PCV7-TT. Blood samples were taken fourteen days after final immunization for obtaining sera...
April 5, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28375784/ptpn22-single-nucleotide-polymorphisms-in-iranian-patients-with-type-1-diabetes-mellitus
#9
Farzaneh Abbasi, Samaneh Soltani, Amene Saghazadeh, Ehsan Soltaninejad, Arezou Rezaei, Alireza Zare Bidoki, Tayyeb Bahrami, Ali Akbar Amirzargar, Nima Rezaei
BACKGROUND: PTPN22 plays a crucial role in regulating the function of various cells of the immune system, particularly T cells. Polymorphisms of the PTPN22 gene have been associated with many autoimmune diseases, including type 1 diabetes (T1D) which is a T-cell-mediated disease. OBJECTIVE: The present study was aimed at genotyping of an Iranian population for five polymorphisms of the PTPN22 gene. METHODS: The study population consisted of 99 T1D patients and 100 healthy controls...
April 4, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28375762/differential-expression-of-toll-like-receptor-signaling-pathway-is-associated-with-microscopic-polyangiitis-in-peripheral-blood-neutrophils
#10
Yanfei Lai, Chao Xue, Yunhua Liao, Li Huang, Qian Peng, Bei Huang, Suzhen Wei, Linlin He, Aimei Gong, Minwen Wang
Constitutive or excessive activation of Toll-like receptor (TLR) signaling pathway can disrupt the body's immune tolerance to autoantigen, thus promoting the development of autoimmune disease. However, the expression profile of TLR signaling pathway in peripheral blood neutrophils in the pathogenesis of microscopic polyangiitis (MPA) remains unclear. Thus, improved understanding of the pathobiology of this disease may aid in the development of therapeutic targets for patients with MPA. In the present study, we assessed the expression of TLR signaling pathway-related genes in peripheral blood neutrophils in patients with MPA...
April 4, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28375749/immunization-with-recombinantly-expressed-lrp4-induces-experimental-autoimmune-myasthenia-gravis-in-c57bl-6-mice
#11
Canan Ulusoy, Filiz Çavuş, Vuslat Yılmaz, Erdem Tüzün
BACKGROUND: Myasthenia gravis (MG) is an autoimmune disease of the neuromuscular junction (NMJ), characterized with muscle weakness. While MG develops due to acetylcholine receptor (AChR) antibodies in most patients, antibodies to muscle-specific receptor tyrosine kinase (MuSK) or low-density lipoprotein receptor-related protein 4 (LRP4) may also be identified. Experimental autoimmune myasthenia gravis (EAMG) has been previously induced by both LRP4 immunization and passive transfer of LRP4 antibodies...
April 4, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28375710/high-interleukin-10-expression-in-type-2-t-helper-cells-in-septic-patients
#12
Huang-Pin Wu, Chien-Ming Chu, Kuo-Chin Kao, Shu-Huan Huang, Duen-Yau Chuang
Interleukin (IL)-10 response is associated with mortality in patients with sepsis. IL-10 is primarily produced by monocytes and type 2 T helper (Th2) cells. The aim of this study was to investigate differences in IL-10 production between monocytes and Th2 cells in patients with sepsis. Forty patients with sepsis and 35 healthy controls were enrolled. Cytokine expressions in peripheral blood mononuclear cells (PBMCs) were measured by flow cytometry. The IL-10 expression in the Th2 cells of the septic patients was higher than in the healthy controls, but the expression of IL-10 in the monocytes of the septic patients was lower than in the healthy controls...
April 4, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28375674/the-inflammatory-cxc-chemokines-gro%C3%AE-high-ip-10-low-and-mig-low-in-tumor-microenvironment-can-be-used-as-new-indicators-for-non-small-cell-lung-cancer-progression
#13
Ya Cao, Haitao Huang, Zhenxin Wang, Guangbo Zhang
AIMS: To investigate the clinical significance of tumor tissue-infiltrating chemokines expression in non-small cell lung cancer (NSCLC) microenvironment. MATERIALS AND METHODS: Fresh tissue samples were acquired from 50 patients with NSCLC after operation. Then, we quantified the total protein with the BCA Protein Assay Kit and tested 13 chemotactic factors in paired samples including tumor tissues, tumor adjacent tissues, and normal tissues with the CBA Kit. RESULTS: We found that the chemokine CC subfamily of MCP-1, MIP-1α, MIP-1β, and MIP-3α and the chemokine CXC subfamily of IL-8, GROα, IP-10, and MIG expressions in tumor tissues were significantly higher than those in tumor-adjacent tissues and normal tissues...
April 4, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28358233/measurement-of-health-related-quality-of-life-in-primary-antibody-deficient-patients
#14
Bahar Ataeinia, Ali Montazeri, Marzieh Tavakol, Gholamreza Azizi, Fatemeh Kiaee, Naiimeh Tavakolinia, Babak Negahdari, Javad Mohammadi, Hassan Abolhassani, Nima Rezaei, Asghar Aghamohammadi
BACKGROUND: Primary immunodeficiency diseases are a group of disorders that result from a variety of defects of the immune system. Primary antibody deficiencies (PADs) are the most common forms of these disorders. Occurrence of recurrent infections, autoimmune diseases, cancers, and lymphoproliferative disorders is higher in PAD patients. Chronicity of these diseases, delayed diagnosis, inadequate treatment, and treatment side effects may affect the quality of life (QoL) of PAD patients...
March 30, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28358227/the-effect-of-surgical-stress-on-postoperative-t%C3%AE-%C3%AE-and-t%C3%AE-%C3%AE-cell-distribution
#15
Andrzej Gryglewski, Marian Szczepanik
BACKGROUND: It was previously shown that appropriate distribution of immune cells between different tissues and organs of the body is required for proper function of the immune system. Our previous experiments demonstrated that surgical trauma in mice induces Tγδ lymphocyte migration from peripheral blood to peritoneal lymphoid organs. Tγδ cells have regulatory activity as they suppress the cell-mediated immune response in vitro via TGF-β. In the current study, we aim to evaluate the influence of surgery on both Taβ and Tγδ lymphocyte distribution in patients that underwent operation...
March 30, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28287857/assessment-of-immunomodulatory-activities-and-in-vitro-toxicity-of-new-quinolone-7-ethyl-9-ethyl-6-oxo-6-9-dihydro-1-2-5-selenadiazolo-3-4-h-quinoline-7-carboxylate
#16
Soňa Jantová, Ema Paulovičová, Lucia Paulovičová, Dominika Topoľská, Miroslav Pánik, Viktor Milata
Our previous studies on leukemia cells L1210 and cervical cancer HeLa cells revealed cytotoxic effects of the 7-ethyl 9-ethyl-6-oxo-6,9-dihydro[1,2,5]selenadiazolo[3,4-h]quinoline-7-carboxylate (E2h), a new synthetically prepared quinolone derivative, toward selected cancer cell lines. The aim of the present study was to examine the cytotoxicity of E2h toward next cell lines and tissues; that is, human cancer HL-60 and A549 cells, human non-cancer fibroblast BHNF-1 cells, and reconstructed human epidermis tissues...
March 13, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28151028/the-association-of-interleukin-16-gene-polymorphisms-with-il-16-serum-levels-and-risk-of-multiple-sclerosis
#17
Mehrdad Farrokhi, Aria Masoudifar, Ali Derakhshan, Samira Saadatmand, Hojjat Rouhi-Boroujeni, Masoud Etemadifar, Saeid Rezaei-Zarji, Ameneh Javid, Reza Nobakht, Mitra Deyhimi, Afagh Ekramnia, Milad Ebrahimi, Sajad Sheikh, Sadra Ansaripour, Ali Amani-Beni, Hamidreza Jahanbani-Ardakani
BACKGROUND: Multiple sclerosis (MS) is a chronic inflammatory, demyelinating, and neurodegenerative disease of the central nervous system (CNS) that is immunologically mediated in genetically susceptible individuals. Interleukin-16 (IL-16), a pleiotropic cytokine, is an important regulator of T-cell activation which plays a key role in autoimmune diseases. Single-nucleotide polymorphisms (SNPs) in the IL-16 gene may lead to altered cytokine expression or biological activity, and these variations may modulate an individual's risk for MS...
February 2, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28332870/changes-in-the-level-of-immunoglobulins-and-cd4-cd8-ratio-in-young-and-aged-mice-with-estradiol-deficiency
#18
Ming-Jun Shao, Yi-Jun Zhu, Ying-Er Qiu, Min Hu, Yun-Qin He
Studies demonstrated that deficiency in 17β-estradiol (E2) in postmenopausal women influences their immune system. However, few studies have reported alterations in immunologic presentation during nonnatural menopause in young females. Here we compared the differences in immune response between young C57BL/6N mice with surgical or medical variectomy and aged C57BL/6N mice with the common feature of E2 deficiency following Con A stimulation. We observed inverted CD4/CD8 ratios in the aged group and apparent reduced production of serum immunoglobin (Ig)G, IgA, and IgM in the surgical group, whereas changes in immune parameters in the medical group were moderate...
April 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28287848/immunomodulating-and-immunoresistance-properties-of-cancer-initiating-cells-implications-for-the-clinical-success-of-immunotherapy
#19
REVIEW
Cristina Maccalli, Giorgio Parmiani, Soldano Ferrone
Cancer-initiating cells (CICs) represent a relatively rare subpopulation of cells endowed with self-renewal, stemness properties, tumorigenicity in immunodeficient mice, and resistance to standard therapies as well as to immunotherapy. Here, we review the biological and immunological characteristics of CICs with special focus on the immunomodulating mechanisms they utilize to escape from immunosurveillance. The recently developed immunotherapeutic strategies have yielded remarkable clinical results in many types of tumors, indicating that indeed a patient's immune system can mount an immune response, which is effective in controlling tumor growth...
April 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28151034/sfrp3-and-dkk1-regulate-fibroblast-like-synoviocytes-markers-and-wnt-elements-expression-depending-on-cellular-context
#20
COMPARATIVE STUDY
Dorra Elhaj Mahmoud, Nadia Sassi, Ghassen Drissi, Maher Barsaoui, Khaled Zitouna, Hela Sahli, Maryam Kallel-Sellami, Lassad Kanoun, Elhem Cheour, Lilia Laadhar
CONTEXT: Fibroblast-like synoviocytes (FLS) from rheumatoid arthritis (RA) display pathogenic behavior. Various members of the Wnt pathway, especially the canonical Wnt/β-catenin cascade, may contribute to autonomous RA FLS activation. It has been shown that the two Wnt inhibitors: sFRP3 and DKK1 contribute to several critical aspects of joint biology. However, their effects on RA FLS are poorly characterized. The aim of our study was to investigate the effects of sFRP3 and DKK1 on FLS markers, Wnt components, and target oncogenes expression by RA FLS and compare the findings to osteoarthritic (OA) FLS...
April 2017: Immunological Investigations
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