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04:03 EST 14th December 2018 | BioPortfolio

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Showing "interferon gamma Healthy" PubMed Articles 1–25 of 6,500+

Boosting effect of IL-7 in interferon gamma release assays to diagnose Mycobacterium tuberculosis infection.

A quarter of the world's population is estimated to be infected with Myobacterium tuberculosis (Mtb). Infection is detected by immune response to M. tuberculosis antigens using either tuberculin skin test (TST) and interferon gamma release (IGRA's), tests which have low sensitivity in immunocompromised. IL-7 is an important cytokine for T-cell function with potential to augment cytokine release in in-vitro assays. This study aimed to determine whether the addition of IL-7 in interferon-gamma release assays ...

Latent tuberculosis infection is associated with increased unstimulated levels of interferon-gamma in Lima, Peru.

We previously reported increased unstimulated blood levels of interferon-gamma in persons with latent tuberculosis infection (LTBI) in the United States, suggesting enhanced immune activation in LTBI. To investigate this further in a TB-endemic setting, we assessed interferon-gamma levels in persons with and without LTBI in Peru.

Lactobacillus rhamnosus GG prevents epithelial barrier dysfunction induced by interferon-gamma and fecal supernatants from irritable bowel syndrome patients in human intestinal enteroids and colonoids.

Disruption of intestinal barrier homeostasis is an important pathogenic factor in conditions such as irritable bowel syndrome (IBS). Lactobacillus rhamnosus GG (LGG) improves IBS symptoms through unclear mechanisms. Previous studies utilizing colorectal adenocarcinoma cell lines showed that LGG metabolites prevented interferon gamma (IFN-gamma) induced barrier damage but the model employed limited these findings. We aimed to interrogate the protective effects of LGG on epithelial barrier function using huma...

Interferon gamma and interleukin 8 gene polymorphisms in patients with hepatitis C virus related oral lichen planus.

This study aimed to determine the association of rs2430561 and rs4073 polymorphisms in the Interferon gamma (IFN-ɤ) and Interleukin 8 (IL-8) genes, respectively, with hepatitis C virus-related oral lichen planus and disease severity.

The Interferon-Gamma Paradox in Cancer.

Interferon-gamma (IFNG) has long been implicated as a central orchestrator of antitumor immune responses in the elimination stage of the immunoediting paradigm. However, mounting evidence suggests that IFNG may also have important and significant protumor roles to play in the equilibrium and escape phases through its regulatory effects on immunoevasive functions that promote tumorigenesis. These seemingly contradictory effects of IFNG undoubtedly play profound roles in not only the activation of inflammator...

Parapapillary Beta Zone and Gamma Zone in a Healthy Population: The Beijing Eye Study 2011.

To assess prevalence and size of the parapapillary beta zone and gamma zone in a healthy population.

Differential expression of interferon-gamma, IL-4 and IL-10 in peripheral blood mononuclear cells during early pregnancy of the bovine.

Maternal systemic immune response is regulated by conceptus-derived signals through peripheral blood mononuclear cells (PBMCs) via blood circulation during early pregnancy in cattle. In this study, the PBMCs from day 18 in non-pregnant cows and days 14, 18 and 30 in pregnant cows were used to explore the expression of interferon-gamma (IFN-γ), interleukin 4 (IL-4) and IL-10, and the plasma progesterone (P4) concentration was also determined. The results showed that the expression levels of mRNA and the pro...

Serum gamma-glutamyl transferase is associated with silent brain infarcts in a healthy population.

Although there is substantial evidence that serum gamma-glutamyl transferase (GGT) is associated with cerebrovascular diseases, its role in silent brain infarcts (SBIs) has not been addressed. In this study, we evaluated the relationship between serum GGT and the presence of SBI in a neurologically healthy population.

Recombinant Duck Interferon Gamma Inhibits H5N1 Influenza Virus Replication In Vitro and In Vivo.

The highly pathogenic H5N1 avian influenza virus (AIV) is widespread in waterfowl, causing enormous economic losses and posing a significant threat to public health. An increasing number of reagents have been identified to prevent the spread of influenza; however, there have been no reports on the anti-H5N1 effects of duck interferons, which exhibit antiviral activity against other viruses. Our aim was to investigate the antiviral effects of purified duck interferons. In this study, we successfully cloned a...

Application of Venn's diagram in the diagnosis of pleural tuberculosis using IFN-γ, IP-10 and adenosine deaminase.

Pleural tuberculosis (PlTB) is the most common extrapulmonary manifestation of this infectious disease which still presents high mortality rates worldwide. Conventional diagnostic tests for PlTB register multiple limitations, including the lack of sensitivity of microbiological methods on pleural specimens and the need of invasive procedures such as pleural biopsy performance. In this scenario, the search for biological markers on pleural fluid (PF) has been the target of several studies as a strategy to ov...

Interferon lambda is required for interferon gamma-expressing NK cell responses but does not afford antiviral protection during acute and persistent murine cytomegalovirus infection.

Interferon lambda (IFNλ) is a group of cytokines that belong to the IL-10 family. They exhibit antiviral activities against certain viruses during infection of the liver and mucosal tissues. Here we report that IFNλ restricts in vitro replication of the β-herpesvirus murine cytomegalovirus (mCMV). However, IFNλR1-deficient (Ifnλr1-/-) mice were not preferentially susceptible to mCMV infection in vivo during acute infection after systemic or mucosal challenge, or during virus persistence in the mucosa. ...

Validation and comparison of ELISA kits to measure interferon gamma responses in QuantiFERON cultural supernatants for diagnosis of tuberculosis.

Much effort has been made to reduce the cost of LTBI diagnosis with equivalent efficacy and efficiency of interferon-γ release assay (IGRA). This study showed that repeatability, intermediate precision, and accuracy of the Bionote-ELISA were comparable to QFT-ELISA. The Bionote-ELISA could provide the alternative method.

Retraction: Novel Approach to Activity Evaluation for Release-Active Forms of Anti-Interferon-Gamma Antibodies Based on Enzyme-Linked Immunoassay.

Serum Gamma-glutamyltransferase and Obesity: is there a Link?

Little data is available on gamma-glutamyltransferase (GGT) and body fat distribution in healthy individuals. We examined whether GGT within normal range is prospectively associated with total body fat (TF) and regional body fat distribution.

Interferon Gamma-Induced Protein (IP-10) as Potential Biomarker for Cancer-Related-Fatigue: Results from a 6-month Randomized Controlled Trial.

We examined if serum concentrations Interferon gamma-induced protein (IP-10) is a potential clinical biomarker for cancer-related-fatigue (CRF). Fatigue scores and IP-10 concentrations were measured from curatively treated fatigued cancer patients randomized to either cognitive behavioral therapy (CBT, n = 26) or waiting-list (WL, n = 13). No correlation was found between baseline IP-10 level and fatigue severity and no significant differences in IP-10 serum levels were observed between fatigued and...

Interferon gamma transcript detection on T cells based on magnetic actuation and multiplex double-tagging electrochemical genosensing.

Interferon-γ is a proinflammatory cytokine, and its production is related with effective host defense against intracellular pathogens. Therefore, the level of interferon-γ is considered a good biomarker for intracellular infections. It is also useful for the assessment, treatment progression and follow-up of non-communicable diseases, including cancer and autoimmune disorders, among others. This work addresses the development of a novel interferon-γ release assay (IGRA) to evaluate the expression of inte...

Defects of Gamma Oscillations in Auditory Steady-State Evoked Potential of Schizophrenia.

Patients with schizophrenia have many cognitive deficits. Gamma oscillations exist in the human brain and are closely related to neurocognition. Auditory Steady-State Responses (ASSRs) is an electroneurophysiological index that could reflect gamma oscillations. It was found that the energy evoked by 40 Hz ASSRs in schizophrenic patients was significantly lower than that in healthy subjects. However, the correlation between ASSRs phase index and clinical symptoms and neurocognitive deficits has yet to be sys...

QuantiFERON-TB Gold In-Tube test in active tuberculosis patients and healthy adults.

Interferon-gamma (IFN-γ) release assays have improved latent tuberculosis (TB) detection and have been considered promising for the diagnosis of TB disease. However, diagnosis efficacy data is limited in high burden countries. The aim of this study was to determine the diagnostic potential of the QuantiFERON-TB Gold In-Tube (QFT-GIT) test for the diagnosis of active TB in an endemic setting for TB. A cross-sectional study was conducted in a group of 102 Thai patients with clinical symptoms and chest x-ray ...

Looking Forward in Interferon and Cytokine Research: Defining Effector Genes of Interferon and Cytokine Actions.

Recombinant interferon alpha 2b in rheumatoid arthritis: good antigen for rheumatoid arthritis antibodies.

Interferon alpha-induced arthritis and activation of the type 1 interferon pathway during rheumatoid arthritis (RA) has been well documented but the underlying mechanism remains unclear. This study addressed the binding specificity of antibodies with recombinant interferon alpha 2b (rIFN -2b) in sera from different RA patients. Utilization of anti-hrIFN -2b antibodies as a probe for estimation of interferon -2b concentration in RA patients' synovial fluid (SF) was also investigated.

Resting gamma power during the postnatal critical period for GABAergic system development is modulated by infant diet and sex.

Gamma band activity (30-50 Hz) plays an essential role in brain development and function, but neither the early postnatal development nor subject and environmental factors influencing this development have been reported. We documented the development of resting gamma power using high density EEG recordings obtained each month from postnatal month 2 to 6 in 518 healthy infants who were breast-fed (170; 85 boys), fed milk formula (186; 97 boys), or fed soy formula (162; 90 boys). Gamma power was determined ...

Understanding the Expanding Roles of Interferon and Cytokines in Health and Disease.

Expression of SOCS1 and SOCS3 Genes in Interferon-Treated and Direct-Acting Antiviral Drugs-Treated Hepatitis C Patients.

Genetics of host plays a significant role in susceptibility and pathogenesis of disease. During hepatitis C virus (HCV) infection, HCV proteins interfere with interferon (IFN) signaling pathways and upregulate transcription of suppressor of cytokine signaling 1 and 3 genes (SOCS1 and SOCS3), which results in impaired immune response. In this study, we evaluated relative expression of SOCS1 and SOCS3 in untreated HCV patients and patients treated with 2 different treatment strategies that are, (IFN therapy a...

IL-35 promoted STAT3 phosphorylation and IL-10 production in B cells, but its production was reduced in patients with coronary artery diseases.

Interleukin (IL)-35 is a heterodimeric cytokine composed of the IL-12A subunit and the Epstein-Barr virus induced gene 3 (EBI3) subunit. Binding of IL-35 with IL-12 receptor subunit beta 2 (IL-12RB2) and IL-6 signal transducer (IL-6ST) occupies the binding sites of IL-6, IL-12, and IL-27 and prevents their signal transduction. IL-35 is also shown to promote the development of regulatory T cells (Tregs) and regulatory B cells (Bregs). In this study, we investigated B cell-mediated IL-35 production in patient...

Gamma and gamma-coupled beams.

A new class of scalar, rotationally symmetric Gaussian-like beams is introduced. The slowly varying amplitudes of such beams are represented as analytical solutions to the paraxial wave equation, described in terms of the incomplete gamma functions and their products with quadratic exponential and power functions of different kinds. The specific functional forms of these solutions give rise to such names as gamma, gamma-Gaussian, gamma-parabolic, and gamma-anti-Gaussian beams. It is established that, within...

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