scholarly journals Transgenerational effects enhance specific immune response in a wild passerine

2015 ◽  
Author(s):  
Juli Broggi ◽  
Ramon C. Soriguer ◽  
Jordi Figuerola
Keyword(s):  
Immune Response ◽  
Maternal Effects ◽  
Passer Domesticus ◽  
Antibody Concentration ◽  
Specific Response ◽  
Maternal Circulation ◽  
Carotenoid Concentration ◽  
Total Antioxidant ◽  
The Impact ◽  
Pha Response

Vertebrate mothers transfer diverse compounds to developing embryos that can affect their development and final phenotype (i.e. maternal effects). However, the way such effects modulate offspring phenotype, in particular their immunity remains unclear. To test the impact of maternal effects on offspring development we treated with Newcastle disease virus (NDV) vaccine wild breeding house sparrow (Passer domesticus) females in Sevilla, SE Spain. Female parents were vaccinated when caring first broods, and their offspring from their following brood were evaluated for their immune response to the same vaccine and to the PHA inflammatory test. Vaccinated chicks from vaccinated mothers developed a stronger specific response that was related to maternal NDV antibody concentration. Chick’s carotenoid concentration and total antioxidant capacity in blood were negatively related to NDV antibody concentration, whereas no relation with PHA response was found. Specific NDV antibodies could not be detected on 10 day old control chicks from vaccinated mothers, implying that maternally transmitted antibodies promote offspring specific immunity through a priming effect, while other immunity components remain unaffected. Maternally transmitted antibodies are short-lived, depend on maternal circulation levels and may be adaptive when chicks are frequently exposed to the same pathogens as their mothers.

scholarly journals Transgenerational effects enhance specific immune response in a wild passerine

2015 ◽  
Author(s):  
Juli Broggi ◽  
Ramon C. Soriguer ◽  
Jordi Figuerola
Keyword(s):  
Immune Response ◽  
Maternal Effects ◽  
Passer Domesticus ◽  
Antibody Concentration ◽  
Specific Response ◽  
Maternal Circulation ◽  
Carotenoid Concentration ◽  
Total Antioxidant ◽  
The Impact ◽  
Pha Response

Vertebrate mothers transfer diverse compounds to developing embryos that can affect their development and final phenotype (i.e. maternal effects). However, the way such effects modulate offspring phenotype, in particular their immunity remains unclear. To test the impact of maternal effects on offspring development we treated with Newcastle disease virus (NDV) vaccine wild breeding house sparrow (Passer domesticus) females in Sevilla, SE Spain. Female parents were vaccinated when caring first broods, and their offspring from their following brood were evaluated for their immune response to the same vaccine and to the PHA inflammatory test. Vaccinated chicks from vaccinated mothers developed a stronger specific response that was related to maternal NDV antibody concentration. Chick’s carotenoid concentration and total antioxidant capacity in blood were negatively related to NDV antibody concentration, whereas no relation with PHA response was found. Specific NDV antibodies could not be detected on 10 day old control chicks from vaccinated mothers, implying that maternally transmitted antibodies promote offspring specific immunity through a priming effect, while other immunity components remain unaffected. Maternally transmitted antibodies are short-lived, depend on maternal circulation levels and may be adaptive when chicks are frequently exposed to the same pathogens as their mothers.

scholarly journals Transgenerational effects enhance specific immune response in a wild passerine

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1766 ◽  
Author(s):  
Juli Broggi ◽  
Ramon C. Soriguer ◽  
Jordi Figuerola
Keyword(s):  
Immune Response ◽  
Maternal Effects ◽  
Passer Domesticus ◽  
Specific Immune Response ◽  
Antibody Concentration ◽  
Specific Response ◽  
Maternal Circulation ◽  
Carotenoid Concentration ◽  
Specific Immunity ◽  
The Impact

Vertebrate mothers transfer diverse compounds to developing embryos that can affect their development and final phenotype (i.e., maternal effects). However, the way such effects modulate offspring phenotype, in particular their immunity, remains unclear. To test the impact of maternal effects on offspring development, we treated wild breeding house sparrows (Passer domesticus) in Sevilla, SE Spain with Newcastle disease virus (NDV) vaccine. Female parents were vaccinated when caring for first broods, eliciting a specific immune response to NDV. The immune response to the same vaccine, and to the PHA inflammatory test were measured in 11-day-old chicks from their following brood. Vaccinated chicks from vaccinated mothers developed a stronger specific response that was related to maternal NDV antibody concentration while rearing their chicks. The chicks’ carotenoid concentration and total antioxidant capacity in blood were negatively related to NDV antibody concentration, whereas no relation with PHA response was found. Specific NDV antibodies could not be detected in 11-day-old control chicks from vaccinated mothers, implying that maternally transmitted antibodies are not directly involved but may promote offspring specific immunity through a priming effect, while other immunity components remain unaffected. Maternally transmitted antibodies in the house sparrow are short-lived, depend on maternal circulation levels and enhance pre-fledging chick specific immunity when exposed to the same pathogens as the mothers.

John Keats and Indian Medicine

Romanticism ◽  
2016 ◽  
Vol 22 (2) ◽  
pp. 157-166
Author(s):  
Nikki Hessell
Keyword(s):  
Medical Knowledge ◽  
John Keats ◽  
Specific Response ◽  
Medical Studies ◽  
Sources Of Information ◽  
Medical Practices ◽  
Traditional Medicines ◽  
Medical Imagery ◽  
Indian Medicine ◽  
The Impact

John Keats's medical studies at Guy's Hospital coincided with a boom in interest in both the traditional medicines of the sub-continent and the experiences of British doctors and patients in India. Despite extensive scholarship on the impact of Keats's medical knowledge on his poetry, little consideration has been given to Keats's exposure to Indian medicine. The poetry that followed his time at Guy's contains numerous references to the contemporary state of knowledge about India and its medical practices, both past and present. This essay focuses on Isabella and considers the major sources of information about Indian medicine in the Regency. It proposes that some of Keats's medical imagery might be read as a specific response to the debates about medicine in the sub-continent.

Evidences of Brain Plasticity and Motor Control Modulation after Hemodialysis Session by Helixone Membrane: BOLD-fMRI Study

2020 ◽  
Vol 19 (6) ◽  
pp. 466-477
Author(s):  
Saïd Boujraf ◽  
Rachida Belaïch ◽  
Abdelkhalek Housni ◽  
Badreeddine Alami ◽  
Tariq Skalli ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Functional Activity ◽  
Brain Plasticity ◽  
Biological Assessment ◽  
Bold Fmri ◽  
Before And After ◽  
Total Antioxidant ◽  
Inflammatory State ◽  
Functional Control ◽  
The Impact

Objective: The aim of this paper is to demonstrate the impact of hemodialysis (HD) using synthetic Helixone membrane on brain functional control reorganization and plasticity in the cortical area generated while Oxidative Stress (OS) would be the main impacting agent. Methods: Indeed, 9 chronic HD patients underwent identical brain BOLD-fMRI assessment using the motor paradigm immediately before and after the same HD sessions. To assess the oxidative stress, the same patients underwent biological-assessment, including Malondialdehyde (MDA) and Total- Antioxidant-Activity (TAOA) reported in earlier papers. Results: BOLD-fMRI maps of motor areas obtained from HD-patients before and after HD sessions revealed a significant enhancement of activation volume of the studied motor cortex after HD reflecting brain plasticity. Results were correlated with OS assessed by the measurement of MDA and TAOA; this correlation was close to 1. Conclusion: Indeed, HD enhances the inflammatory state of brain tissues reflected by the increased OS. The functional brain reaction demonstrated a functional activity reorganization to overcome the inflammatory state and OS enhanced by HD process. This functional activity reorganization reveals brain plasticity induced by OS originated by HD.

scholarly journals Decitabine Promotes Modulation in Phenotype and Function of Monocytes and Macrophages That Drive Immune Response Regulation

Cells ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 868
Author(s):  
Fabiana Albani Zambuzi ◽  
Priscilla Mariane Cardoso-Silva ◽  
Ricardo Cardoso Castro ◽  
Caroline Fontanari ◽  
Flavio da Silva Emery ◽  
...  
Keyword(s):  
Immune Response ◽  
Hematological Malignancies ◽  
M2 Macrophage ◽  
M2 Polarization ◽  
Tnf Α ◽  
Monocytes And Macrophages ◽  
Ifn Γ ◽  
And Function ◽  
The Impact

Decitabine is an approved hypomethylating agent used for treating hematological malignancies. Although decitabine targets altered cells, epidrugs can trigger immunomodulatory effects, reinforcing the hypothesis of immunoregulation in treated patients. We therefore aimed to evaluate the impact of decitabine treatment on the phenotype and functions of monocytes and macrophages, which are pivotal cells of the innate immunity system. In vitro decitabine administration increased bacterial phagocytosis and IL-8 release, but impaired microbicidal activity of monocytes. In addition, during monocyte-to-macrophage differentiation, treatment promoted the M2-like profile, with increased expression of CD206 and ALOX15. Macrophages also demonstrated reduced infection control when exposed to Mycobacterium tuberculosis in vitro. However, cytokine production remained unchanged, indicating an atypical M2 macrophage. Furthermore, when macrophages were cocultured with lymphocytes, decitabine induced a reduction in the release of inflammatory cytokines such as IL-1β, TNF-α, and IFN-γ, maintaining IL-10 production, suggesting that decitabine could potentialize M2 polarization and might be considered as a therapeutic against the exacerbated immune response.

scholarly journals NLRP7 Promotes Choriocarcinoma Growth and Progression through the Establishment of an Immunosuppressive Microenvironment

Cancers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2999
Author(s):  
Deborah Reynaud ◽  
Roland Abi Nahed ◽  
Nicolas Lemaitre ◽  
Pierre-Adrien Bolze ◽  
Wael Traboulsi ◽  
...  
Keyword(s):  
Immune Response ◽  
Tumor Cells ◽  
Major Gene ◽  
Critical Role ◽  
Orthotopic Model ◽  
Independent Manner ◽  
Maternal Immune Response ◽  
The Impact

The inflammatory gene NLRP7 is the major gene responsible for recurrent complete hydatidiform moles (CHM), an abnormal pregnancy that can develop into gestational choriocarcinoma (CC). However, the role of NLRP7 in the development and immune tolerance of CC has not been investigated. Three approaches were employed to define the role of NLRP7 in CC development: (i) a clinical study that analyzed human placenta and sera collected from women with normal pregnancies, CHM or CC; (ii) an in vitro study that investigated the impact of NLRP7 knockdown on tumor growth and organization; and (iii) an in vivo study that used two CC mouse models, including an orthotopic model. NLRP7 and circulating inflammatory cytokines were upregulated in tumor cells and in CHM and CC. In tumor cells, NLRP7 functions in an inflammasome-independent manner and promoted their proliferation and 3D organization. Gravid mice placentas injected with CC cells invalidated for NLRP7, exhibited higher maternal immune response, developed smaller tumors, and displayed less metastases. Our data characterized the critical role of NLRP7 in CC and provided evidence of its contribution to the development of an immunosuppressive maternal microenvironment that not only downregulates the maternal immune response but also fosters the growth and progression of CC.

Ellagitannins, Gallotannins and their Metabolites- The Contribution to the Anti-Inflammatory Effect of Food Products and Medicinal Plants

2019 ◽  
Vol 25 (37) ◽  
pp. 4946-4967 ◽  
Author(s):  
Anna K. Kiss ◽  
Jakub P. Piwowarski
Keyword(s):  
Immune Response ◽  
Gastrointestinal Tract ◽  
Gut Microbiota ◽  
Health Effects ◽  
Biological Effects ◽  
Food Products ◽  
Anti Inflammatory ◽  
The Impact

The popularity of food products and medicinal plant materials containing hydrolysable tannins (HT) is nowadays rapidly increasing. Among various health effects attributable to the products of plant origin rich in gallotannins and/or ellagitannins the most often underlined is the beneficial influence on diseases possessing inflammatory background. Results of clinical, interventional and animal in vivo studies clearly indicate the antiinflammatory potential of HT-containing products, as well as pure ellagitannins and gallotannins. In recent years a great emphasis has been put on the consideration of metabolism and bioavailability of natural products during examination of their biological effects. Conducted in vivo and in vitro studies of polyphenols metabolism put a new light on this issue and indicate the gut microbiota to play a crucial role in the health effects following their oral administration. The aim of the review is to summarize the knowledge about HT-containing products’ phytochemistry and their anti-inflammatory effects together with discussion of the data about observed biological activities with regards to the current concepts on the HTs’ bioavailability and metabolism. Orally administered HT-containing products due to the limited bioavailability of ellagitannins and gallotannins can influence immune response at the level of gastrointestinal tract as well as express modulating effects on the gut microbiota composition. However, due to the chemical changes being a result of their transit through gastrointestinal tract, comprising of hydrolysis and gut microbiota metabolism, the activity of produced metabolites has to be taken into consideration. Studies regarding biological effects of the HTs’ metabolites, in particular urolithins, indicate their strong and structure-dependent anti-inflammatory activities, being observed at the concentrations, which fit the range of their established bioavailability. The impact of HTs on inflammatory processes has been well established on various in vivo and in vitro models, while influence of microbiota metabolites on silencing the immune response gives a new perspective on understanding anti-inflammatory effects attributed to HT containing products, especially their postulated effectiveness in inflammatory bowel diseases (IBD) and cardiovascular diseases.

scholarly journals Impact of Influenza A Virus Shutoff Proteins on Host Immune Responses

Vaccines ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 629
Author(s):  
Megan M. Dunagan ◽  
Kala Hardy ◽  
Toru Takimoto
Keyword(s):  
Immune Response ◽  
Immune Responses ◽  
Influenza A Virus ◽  
Influenza A ◽  
Human Populations ◽  
Lymphocyte Migration ◽  
Host Immune Responses ◽  
Mhc Molecules ◽  
The Impact

Influenza A virus (IAV) is a significant human pathogen that causes seasonal epidemics. Although various types of vaccines are available, IAVs still circulate among human populations, possibly due to their ability to circumvent host immune responses. IAV expresses two host shutoff proteins, PA-X and NS1, which antagonize the host innate immune response. By transcriptomic analysis, we previously showed that PA-X is a major contributor for general shutoff, while shutoff active NS1 specifically inhibits the expression of host cytokines, MHC molecules, and genes involved in innate immunity in cultured human cells. So far, the impact of these shutoff proteins in the acquired immune response in vivo has not been determined in detail. In this study, we analyzed the effects of PA-X and NS1 shutoff activities on immune response using recombinant influenza A/California/04/2009 viruses containing mutations affecting the expression of shutoff active PA-X and NS1 in a mouse model. Our data indicate that the virus without shutoff activities induced the strongest T and B cell responses. Both PA-X and NS1 reduced host immune responses, but shutoff active NS1 most effectively suppressed lymphocyte migration to the lungs, antibody production, and the generation of IAV specific CD4+ and CD8+ T cells. NS1 also prevented the generation of protective immunity against a heterologous virus challenge. These data indicate that shutoff active NS1 plays a major role in suppressing host immune responses against IAV infection.

scholarly journals Modulation of Antigen Display on PapMV Nanoparticles Influences Its Immunogenicity

Vaccines ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 33
Author(s):  
Marie-Eve Laliberté-Gagné ◽  
Marilène Bolduc ◽  
Caroline Garneau ◽  
Santa-Mariela Olivera-Ugarte ◽  
Pierre Savard ◽  
...  
Keyword(s):  
Immune Response ◽  
Influenza A ◽  
Matrix Protein ◽  
Cell Epitope ◽  
Vaccine Antigen ◽  
Vaccine Platform ◽  
Peptide Antigens ◽  
C Terminus ◽  
The Impact ◽  
Stimulation Of

Background: The papaya mosaic virus (PapMV) vaccine platform is a rod-shaped nanoparticle made of the recombinant PapMV coat protein (CP) self-assembled around a noncoding single-stranded RNA (ssRNA) template. The PapMV nanoparticle induces innate immunity through stimulation of the Toll-like receptors (TLR) 7 and 8. The display of the vaccine antigen at the surface of the nanoparticle, associated with the co-stimulation signal via TLR7/8, ensures a strong stimulation of the immune response, which is ideal for the development of candidate vaccines. In this study, we assess the impact of where the peptide antigen is fused, whether at the surface or at the extremities of the nanoparticles, on the immune response directed to that antigen. Methods: Two different peptides from influenza A virus were used as model antigens. The conserved M2e peptide, derived from the matrix protein 2 was chosen as the B-cell epitope, and a peptide derived from the nucleocapsid was chosen as the cytotoxic T lymphocytes (CTL) epitope. These peptides were coupled at two different positions on the PapMV CP, the N- (PapMV-N) or the C-terminus (PapMV-C), using the transpeptidase activity of Sortase A (SrtA). The immune responses, both humoral and CD8+ T-cell-mediated, directed to the peptide antigens in the two different fusion contexts were analyzed and compared. The impact of coupling density at the surface of the nanoparticle was also investigated. Conclusions: The results demonstrate that coupling of the peptide antigens at the N-terminus (PapMV-N) of the PapMV CP led to an enhanced immune response to the coupled peptide antigens as compared to coupling to the C-terminus. The difference between the two vaccine platforms is linked to the enhanced capacity of the PapMV-N vaccine platform to stimulate TLR7/8. We also demonstrated that the strength of the immune response increases with the density of coupling at the surface of the nanoparticles.

A Report on COVID-19 Variants, COVID-19 Vaccines and the Impact of the Variants on the Efficacy of the Vaccines

2021 ◽  
Author(s):  
Michael Halim
Keyword(s):  
South Africa ◽  
Immune Response ◽  
Clinical Characteristics ◽  
Systemic Review ◽  
Review Of Literature ◽  
Negative Effects ◽  
Mortality And Morbidity ◽  
The World ◽  
Different Strains ◽  
The Impact

The Coronavirus pandemic has caused negative effects across the globe; mortality and morbidity being the main impact. After WHO, termed the disease a pandemic in March 2020, they gave in health guidelines to follow to control the spread of the disease. The health industry, academia, and different governments are united to develop and test various vaccines at an unprecedented speed to combat the pandemic fully and bring the world back to its feet. Some of the vaccines developed include Pfizer, Moderna, and AstraZeneca. However, just like other viruses, the SAR-CoV-2 virus keeps changing through mutation, as various variants, different from the first one are emerging. Evidence shows that the three new variants; UK, Brazil, and South Africa are more severe in terms of transmissibility, disease severity, evading of the immune response, and reducing the ability to neutralized antibodies, compared to the original coronavirus. With such knowledge of the existence of different strains, the arises concerns on whether the already available vaccines are effective enough in preventing the new COVID-19 strains. Studies are still underdeveloped to learn more on the virologic, epidemiologic, and clinical characteristics of the ever-emerging variants. This research, through a systemic review of literature, seeks to find out whether the variants of SAR-CoV-2 have an impact on the efficacy of various vaccines developed in fighting the disease and the entire body’s immune response.

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