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Immunological Investigations

Valle-Jiménez Xareni Raque, Sánchez-García Juan Carlos, Revilla-Rodríguez Eduardo, Baltierrez-Hoyos Rafael, Romero-Tlalolini María de Los Ángeles, Ramírez-Cosmes Adriana, Torres-Aguilar Honorio, Bustos-Arriaga José, Aguilar-Ruiz Sergio Roberto
Sepsis is an organic dysfunction that puts at risk the life of patients suffering this disorder due to an exacerbated immunological response to the infection mediated by the host. Platelets have been largely researched on sepsis owing to its role in Disseminated Intracellular Coagulation (DIC) and because thrombocytopenia is an important clinical feature of these patients. Nevertheless, a great number of evidence shows that platelets have also an important role in immunological response since they have pattern recognition receptors, chemokine receptors and granules with stored soluble mediators...
December 8, 2017: Immunological Investigations
Serena Bonin, Nunzia Zanotta, Arianna Sartori, Alessio Bratina, Paolo Manganotti, Giusto Trevisan, Manola Comar
BACKGROUND: Cerebrospinal fluid (CSF) analysis in patients with particular neurologic disorders is a powerful tool to evaluate specific central nervous system inflammatory markers for diagnostic needs, because CSF represents the specific immune micro-environment to the central nervous system. METHODS: CSF samples from 49 patients with multiple sclerosis (MS), chronic inflammatory demyelinating polyneuropathy (CIDP), and non-inflammatory neurologic disorders (NIND) as controls were submitted to protein expression profiles of 47 inflammatory biomarkers by multiplex Luminex bead assay to investigate possible differences in the inflammatory process for MS and CIDP...
November 28, 2017: Immunological Investigations
Nadia Elwan, Mohamed Labib Salem, Abdelrahman Kobtan, Ferial El-Kalla, Loai Mansour, Mohamed Yousef, Ashraf Al-Sabbagh, Abdel-Aziz A Zidan, Sherief Abd-Elsalam
BACKGROUND: Hepatocellular carcinoma (HCC) is the 3rd most common cause of cancer-related death worldwide. It has evolved different immune escape mechanisms, which might include emergence of lymphoid and myeloid regulatory cells. Aim of this work: To determine the numbers of Myeloid-derived suppressor cells (MDSCs) in peripheral blood and ascitic fluid in cirrhosis and HCC and their relation to IFN-γ and α-fetoprotein (α-FP). PATIENTS AND METHODS: Sixty individuals were enrolled in this study; forty cirrhotic patients with ascites; twenty without HCC (Group I), and twenty with HCC (group II) as well as twenty healthy individuals as a control group (group III)...
November 28, 2017: Immunological Investigations
Fanny Poujol, Guillaume Monneret, Emmanuelle Gallet-Gorius, Alexandre Pachot, Julien Textoris, Fabienne Venet
Profound T-cell alterations are observed in septic patients in association with increased risk of secondary infection and mortality. The pathophysiological mechanisms leading to such dysfunctions are not completely understood and direct and indirect mechanisms have been described. In this study we evaluated whether ex vivo stimulation of lymphocytes with IL-10, an immunosuppressive cytokine released at the systemic level during sepsis, could mimic sepsis-induced intrinsic T-cell alterations. We showed that recombinant human IL-10 priming of T cells altered their proliferative response to anti-CD2/CD3/CD28 antibody-coated beads and PHA stimulations, in a dose-dependent manner independently of accessory cells...
November 28, 2017: Immunological Investigations
Si Li, Qin Zhang, Peng Wang, Jun Li, Jing Ni, Jun Wu, Yan Liang, Rui-Xue Leng, Hai-Feng Pan, Dong-Qing Ye
OBJECTIVE: This study was performed to systematically summarize the results on the association of HLA-DQB1 polymorphisms with pemphigus vulgaris (PV) and other related factors. METHODS: A comprehensive literature search of PubMed, The Cochrane Library, Embase, and Google Scholar database was conducted to identify relevant articles in English, with the last report up to November 1, 2016. Heterogeneity test was performed, and publication bias was evaluated. Stata software 12...
November 28, 2017: Immunological Investigations
Ambak Kumar Rai, Chandreshwar Prasad Thakur, Prabin Kumar, Sheetal Saini, Amit Kumar Kureel, Smita Kumari, Tulika Seth, Dipendra Kumar Mitra
BACKGROUND: Natural Killer (NK) cell plays an important role in the innate immune system and is known to produce IFN-γ at an early stage of infection that is essential to eliminate intracellular infection like Leishmania spp. It is already established that Leishmania parasite inhibits the activity of NK cells, avoiding the encounter with the early innate immune response. This, in turn, favors establishment and further dissemination of the infection. METHODS: In the present study, we have tried to measure the frequency of different phenotypic subsets of NK cells among visceral leishmaniasis (VL) patients...
November 28, 2017: Immunological Investigations
Monika Buraczynska, Kinga Buraczynska, Pawel Zukowski, Andrzej Ksiazek
OBJECTIVE: Diabetic peripheral neuropathy (DPN) is one of late complications of diabetes mellitus. The aim of this study was to evaluate the association between variable number tandem repeat (VNTR) polymorphism in intron 3 of interleukin-4 gene and risk of DPN. METHODS: We examined 926 T2DM patients and 420 healthy controls. In the patient group, 44% had DPN. Genomic DNA was isolated from all subjects and genotyped for the IL-4 VNTR polymorphism by polymerase chain reaction (PCR)...
November 28, 2017: Immunological Investigations
Sejin Oh, Hyunji Lee, Jung Hoon Shin, Changwan Hong, Se-Ho Park
BACKGROUND: CD1d-dependent invariant natural killer (iNKT) cells are found as either CD4 single positive (SP) or CD4/CD8 double negative (DN) cells in mice. The size of the CD8(+) iNKT population is extremely small. It is known that CD1d expression on developing thymocytes is sufficient for iNKT development and co-receptor choice, which is driven by Th-POK expression. This study aimed to examine the factors involved in the CD4/CD8 co-receptor choice of iNKT cells in addition to Th-POK-driven silencing of CD8 expression...
November 3, 2017: Immunological Investigations
Shiva Khezri, Seyyed Meysam Abtahi Froushani, Mozhgan Shahmoradi
Experimental autoimmune encephalomyelitis (EAE) in rats through immunization with guinea pig spinal cord homogenate (GPSCH) produces a chronic disease with a relapsing pattern such as multiple sclerosis (MS) in humans. In previous studies, the immunomodulatory benefits of mesenchymal stem cells (MSCs) and nicotine have already been determined. Thus, this research was conducted to assess the additional benefits of the combination therapy of MSCs and nicotine in a rat model of MS. EAE was induced by GPSCH and complete Freund's adjuvant (CFA) in female Wistar rats...
November 3, 2017: Immunological Investigations
Hermínio Maurício da Rocha Sobrinho, Delson José da Silva, Larissa Fonseca Gomides, Miriam Leandro Dorta, Milton Adriano Pelli de Oliveira, Fátima Ribeiro-Dias
Parkinson's disease (PD) is an age-related neurodegenerative disease characterized by loss of dopaminergic neurons associated with neuroinflammation. Toll-like receptors (TLRs) are expressed in peripheral blood leukocytes and also in neurons and glial cells mediating inflammation. This study aimed to investigate the peripheral blood leukocyte response to TLR2 and TLR4 agonists in young and elderly PD patients. Two groups of patients with PD were evaluated (≤ 55 years old and ≥ 65 years old), age-matched with healthy controls (n = 26)...
October 27, 2017: Immunological Investigations
Derek Jones, Anirban Banerjee, Peter Z Berger, Alexandra Gross, Sean McNish, Richard Amdur, Victoria K Shanmugam
Hidradenitis suppurativa (HS) is a chronic, recurrent, inflammatory disease of apocrine gland-bearing skin which affects approximately 1-4% of the population. Defective keratinocyte function has been postulated to play a role in HS pathogenesis. Using an in vitro scratch assay, differences between normal, HS, and chronic wound (CW) keratinocytes were evaluated. Normal keratinocytes exhibited faster scratch closure than HS or CW, with normal samples showing 93.8% closure at 96 hours compared to 80.8% in HS (p = 0...
October 3, 2017: Immunological Investigations
Supriya D Mahajan, Ravikumar Aalinkeel, Neil U Parikh, Alexander Jacob, Katherine Cwiklinski, Prateet Sandhu, Kevin Le, Alexander W Loftus, Stanley A Schwartz, Richard J Quigg, Jessy J Alexander
The complement system which is a critical mediator of innate immunity plays diverse roles in the neuropathogenesis of HIV-1 infection such as clearing HIV-1 and promoting productive HIV-1 replication. In the development of HIV-1 associated neurological disorders (HAND), there may be an imbalance between complement activation and regulation, which may contribute to the neuronal damage as a consequence of HIV-1 infection. It is well recognized that opiate abuse exacerbates HIV-1 neuropathology, however, little is known about the role of complement proteins in opiate induced neuromodulation, specifically in the presence of co-morbidity such as HIV-1 infection...
November 2017: Immunological Investigations
Rakesh Kumar Sharma, Katherine Cwiklinski, Ravikumar Aalinkeel, Jessica L Reynolds, Donald E Sykes, Elizabeth Quaye, James Oh, Supriya D Mahajan, Stanley A Schwartz
We synthesized and characterized curcumin-stabilized silver nanoparticles (Cur-AgNP) and found them to be 45 nm by dynamic light scattering with a maximum absorbance at 406 nm. We evaluated Cur-AgNP for immunomodulatory activities and their potential as an antiretroviral agent. The antiretroviral effects of Cur-AgNP were determined in ACH-2 cells latently infected with human immunodeficiency virus (HIV)-1. ACH-2 cells, 200,000/ml, were treated with Cur-AgNP for 24-48 h. Expression of HIV-1 LTR and p24, the pro-inflammatory cytokines, IL-1β, TNF-α, and NF-κB was quantitated...
November 2017: Immunological Investigations
Nader D Nader
No abstract text is available yet for this article.
November 2017: Immunological Investigations
Siavash Sedghi, Hilliard L Kutscher, Bruce A Davidson, Paul R Knight
Historically, volatile anesthetics have demonstrated interesting interactions with both the innate and adaptive immune systems. This review organizes these interactions into four phases: recognition, recruitment, response, and resolution. These phases represent a range of proinflammatory, inflammatory, and innate and adaptive immune regulatory responses. The interaction between volatile anesthetics and the immune system is discussed in the context of pathogenesis of infectious disease.
November 2017: Immunological Investigations
Barbara E Ostrov, Daniel Amsterdam
Modulation of the immune system by microbes, especially from the gastrointestinal tract, is increasingly considered a key factor in the onset, course and outcome of rheumatic diseases. The interplay of the microbiome, along with genetic predisposition and environmental exposure, is thought to be an important trigger for rheumatic diseases. Improved identification of the relationship of disease-specific genetic alterations and rheumatic diseases has potential diagnostic and therapeutic applications. Treatment of rheumatic disorders is influenced by microbial actions but this interplay can be challenging due to variable and unpredictable responses to therapies...
November 2017: Immunological Investigations
Behzad Mansoori, Ali Mohammadi, Solmaz Shirjang, Behzad Baradaran
Immune cells are recruited into the tumor microenvironment and regulate anti- and pro-tumor signals. MicroRNAs (miRNAs) markedly control the immune system responses in cancer development. miRNAs that affect the immune system could be interesting targets for immunomodulation against cancer, either through the activation of effector cells or through the down-regulation of regulatory cells. Bioinformatic calculations can predict the immune system and miRNA interactions. In this review, we discuss the most recent studies about miRNA as the main regulator of recruitment and the activation of the immune system in the tumor microenvironment and finally we propose several miRNAs that could serve as therapeutic molecules in the immunotherapy of cancer...
November 2017: Immunological Investigations
Christine Ruh, Rashmi Banjade, Subhadra Mandadi, Candace Marr, Zarchi Sumon, John K Crane
No abstract text is available yet for this article.
November 2017: Immunological Investigations
(no author information available yet)
No abstract text is available yet for this article.
November 2017: Immunological Investigations
Sahar Esmailzadeh, Behzad Mansoori, Ali Mohammadi, Behzad Baradaran
MicroRNAs (miRNAs) are short conserved non-coding RNA molecules that have recently emerged as post-transcriptional gene expression regulators. miRNAs degrade or repress target mRNAs by targeting the 3' UTR region. miRNA-mediated gene regulation is crucial for regular biological processes such as immune cell lineage commitment, differentiation, maturation, and maintenance of immune homeostasis and regular function. Changes in miRNA expression patterns have been recorded in a wide range of human diseases, including autoimmunity, especially in T cell-related autoimmunity...
November 2017: Immunological Investigations
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