keyword
MENU ▼
Read by QxMD icon Read
search

Helminths, immune

keyword
https://www.readbyqxmd.com/read/28808975/isolation-of-group-2-innate-lymphoid-cells-from-mouse-lungs
#1
Claudia U Duerr, Jörg H Fritz
The recently described group 2 innate lymphoid cells (ILC2) exert critical roles in type 2 immune responses, epithelial repair at mucosal tissues and metabolic homeostasis. ILC2 release large amounts of type 2 cytokines such as interleukin 4 (IL-4), IL-5, and IL-13, driving type 2 immunity such as the defense against helminths. However, if not tightly regulated ILC2 can trigger unwanted type 2 immunopathologies including allergic airway inflammation, airway hyper-responsiveness, and atopic dermatitis. Viral respiratory tract infections, archetypal triggers of type 1 immune responses, often give rise to pulmonary type 2 immunopathologies such as asthma and asthma exacerbations...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28807291/toxocara-canis-analysis-of-the-kinetics-of-antigen-release-and-antibody-production-in-an-in-vivo-model-for-the-detection-of-past-or-present-infection
#2
Aarón Rodríguez-Caballero, Mario Noé Martínez-Gordillo, Silvia Caballero-Salazar, Yadira Rufino-González, Martha Ponce-Macotela
Worldwide, Toxocara canis is an important zoonotic nematode of public health concern. This soil-transmitted helminth causes visceral larva and ocular larva migrans in paratenic hosts. The detection of T. canis larva migrans is complicated because current immunological tests detect only IgG antibodies, which can cross-react with antigens from other parasites and cannot distinguish between the past and present infection. Analysis of antigen release and antibody production could help improve the detection of larva migrans...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28791259/toxoplasma-co-infection-prevents-th2-differentiation-and-leads-to-a-helminth-specific-th1-response
#3
Norus Ahmed, Timothy French, Sebastian Rausch, Anja Kühl, Katrin Hemminger, Ildiko R Dunay, Svenja Steinfelder, Susanne Hartmann
Nematode infections, in particular gastrointestinal nematodes, are widespread and co-infections with other parasites and pathogens are frequently encountered in humans and animals. To decipher the immunological effects of a widespread protozoan infection on the anti-helminth immune response we studied a co-infection with the enteric nematode Heligmosomoides polygyrus in mice previously infected with Toxoplasma gondii. Protective immune responses against nematodes are dependent on parasite-specific Th2 responses associated with IL-4, IL-5, IL-13, IgE, and IgG1 antibodies...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28791217/clinical-and-laboratory-features-of-human-dirofilariasis-in-russia
#4
Larisa Ermakova, Sergey Nagorny, Natalia Pshenichnaya, Yury Ambalov, Kerim Boltachiev
The article presents the results of the prospective study of 266 patients with dirofilariasis who received medical and diagnostic assistance in Rostov Scientific Research Institute of Microbiology and Parasitology in Rostov-on-Don, Russia from 2000 to 2016. We have assessed the features of the dynamics of epidemiology of this infection in several territories of the Russian Federation, depending on the social structure of patients. Immature females of dirofilaria were found most commonly in humans (82.9 ± 2...
2017: IDCases
https://www.readbyqxmd.com/read/28782655/on-the-role-of-igg4-in-inflammatory-conditions-lessons-for-igg4-related-disease
#5
REVIEW
David C Trampert, Lowiek M Hubers, Stan F J van de Graaf, Ulrich Beuers
The pathophysiology of immunoglobulin G4-related disease (IgG4-RD) and its most common manifestations, IgG4-associated (sclerosing) cholangitis and autoimmune pancreatitis, remains largely unknown, but IgG4 is presumably involved. IgG4 is a promiscuous antibody, which could be directly pathogenic, fulfill a protective role, or could just be a fortuitous marker of an aberrant inflammatory response. IgG4 antibodies possess exclusive structural and functional characteristics suggesting anti-inflammatory and tolerance-inducing effects...
August 3, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28771620/a-benign-helminth-alters-the-host-immune-system-and-the-gut-microbiota-in-a-rat-model-system
#6
Laura Wegener Parfrey, Milan Jirků, Radek Šíma, Marie Jalovecká, Bohumil Sak, Karina Grigore, Kateřina Jirků Pomajbíková
Helminths and bacteria are major players in the mammalian gut ecosystem and each influences the host immune system and health. Declines in helminth prevalence and bacterial diversity appear to play a role in the dramatic rise of immune mediated inflammatory diseases (IMIDs) in western populations. Helminths are potent modulators of immune system and their reintroduction is a promising therapeutic avenue for IMIDs. However, the introduction of helminths represents a disturbance for the host and it is important to understand the impact of helminth reintroduction on the host, including the immune system and gut microbiome...
2017: PloS One
https://www.readbyqxmd.com/read/28770689/recombinant-subunit-vaccines-for-soil-transmitted-helminths
#7
Jason B Noon, Raffi V Aroian
Soil-transmitted helminths (STHs) collectively infect one fourth of all human beings, and the majority of livestock in the developing world. These gastrointestinal nematodes are the most important parasites on earth with regard to their prevalence in humans and livestock. Current anthelmintic drugs are losing their efficacies due to increasing drug resistance, particularly in STHs of livestock and drug treatment is often followed by rapid reinfection due to failure of the immune system to develop a protective response...
August 3, 2017: Parasitology
https://www.readbyqxmd.com/read/28768707/impact-of-childhood-malnutrition-on-host-defense-and-infection
#8
REVIEW
Marwa K Ibrahim, Mara Zambruni, Christopher L Melby, Peter C Melby
The global impact of childhood malnutrition is staggering. The synergism between malnutrition and infection contributes substantially to childhood morbidity and mortality. Anthropometric indicators of malnutrition are associated with the increased risk and severity of infections caused by many pathogens, including viruses, bacteria, protozoa, and helminths. Since childhood malnutrition commonly involves the inadequate intake of protein and calories, with superimposed micronutrient deficiencies, the causal factors involved in impaired host defense are usually not defined...
October 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/28759590/mixed-th1-and-th2-mycobacterium-tuberculosis-specific-cd4-t-cell-responses-in-patients-with-active-pulmonary-tuberculosis-from-tanzania
#9
Patrizia Amelio, Damien Portevin, Klaus Reither, Francis Mhimbira, Maxmillian Mpina, Anneth Tumbo, Beatrice Nickel, Hanspeter Marti, Stefanie Knopp, Song Ding, Adam Penn-Nicholson, Fatoumatta Darboe, Khalid Ohmiti, Thomas J Scriba, Giuseppe Pantaleo, Claudia Daubenberger, Matthieu Perreau
Mycobacterium tuberculosis (Mtb) and helminth infections elicit antagonistic immune effector functions and are co-endemic in several regions of the world. We therefore hypothesized that helminth infection may influence Mtb-specific T-cell immune responses. We evaluated the cytokine profile of Mtb-specific T cells in 72 individuals with pulmonary TB disease recruited from two Sub-Saharan regions with high and moderate helminth burden i.e. 55 from Tanzania (TZ) and 17 from South Africa (SA), respectively. We showed that Mtb-specific CD4 T-cell functional profile of TB patients from Tanzania are primarily composed of polyfunctional Th1 and Th2 cells, associated with increased expression of Gata-3 and reduced expression of T-bet in memory CD4 T cells...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28757123/molecular-and-biochemical-characterisation-and-recognition-by-the-immune-host-of-the-glyceraldehyde-3-phosphate-dehydrogenase-gapdh-of-the-abomasal-nematode-parasite-teladorsagia-circumcincta
#10
S Umair, C L G Bouchet, J S Knight, A Pernthaner, H V Simpson
A 1023 bp full length cDNA encoding Teladorsagia circumcincta GAPDH (TeciGAPDH) was cloned, expressed in Escherichia coli and the recombinant protein purified and its kinetic properties determined. A phylogenetic tree was constructed using helminth GAPDH sequences. The predicted protein consisted of 341 amino acids and was present as a single band of about 38 kDa on SDS-PAGE. Multiple alignments of the protein sequence of TeciGAPDH with homologues from other helminths showed that the greatest similarity (93%) to the GAPDH of Haemonchus contortus and Dictyocaulus viviparus, 82-86% similarity to the other nematode sequences and 68-71% similarity to cestode and trematode enzymes...
July 27, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28747424/ilc2s-regulate-adaptive-th2-cell-functions-via-pd-l1-checkpoint-control
#11
Christian Schwartz, Adnan R Khan, Achilleas Floudas, Sean P Saunders, Emily Hams, Hans-Reimer Rodewald, Andrew N J McKenzie, Padraic G Fallon
Group 2 innate lymphoid cells (ILC2s) are important effector cells driving the initiation of type 2 immune responses leading to adaptive T helper 2 (Th2) immunity. Here we show that ILC2s dynamically express the checkpoint inhibitor molecule PD-L1 during type 2 pulmonary responses. Surprisingly, PD-L1:PD-1 interaction between ILC2s and CD4(+) T cells did not inhibit the T cell response, but PD-L1-expressing ILC2s stimulated increased expression of GATA3 and production of IL-13 by Th2 cells both in vitro and in vivo...
July 26, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28744067/helminth-products-potently-modulate-experimental-autoimmune-encephalomyelitis-by-downregulating-neuroinflammation-and-promoting-a-suppressive-microenvironment
#12
Alberto N Peón, Yadira Ledesma-Soto, Jonadab E Olguín, Marcel Bautista-Donis, Edda Sciutto, Luis I Terrazas
A negative correlation between the geographical distribution of autoimmune diseases and helminth infections has been largely associated in the last few years with a possible role for such type of parasites in the regulation of inflammatory diseases, suggesting new pathways for drug development. However, few helminth-derived immunomodulators have been tested in experimental autoimmune encephalomyelitis (EAE), an animal model of the human disease multiple sclerosis (MS). The immunomodulatory activities of Taenia crassiceps excreted/secreted products (TcES) that may suppress EAE development were sought for...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28742098/pathological-manifestations-in-lymphatic-filariasis-correlate-with-lack-of-inhibitory-properties-of-igg4-antibodies-on-ige-activated-granulocytes
#13
Ulrich F Prodjinotho, Charlotte von Horn, Alex Y Debrah, Linda Batsa Debrah, Anna Albers, Laura E Layland, Achim Hoerauf, Tomabu Adjobimey
Helminth parasites are known to be efficient modulators of their host's immune system. To guarantee their own survival, they induce alongside the classical Th2 a strong regulatory response with high levels of anti-inflammatory cytokines and elevated plasma levels of IgG4. This particular antibody was shown in different models to exhibit immunosuppressive properties. How IgG4 affects the etiopathology of lymphatic filariasis (LF) is however not well characterized. Here we investigate the impact of plasma and affinity-purified IgG/IgG4 fractions from endemic normals (EN) and LF infected pathology patients (CP), asymptomatic microfilaraemic (Mf+) and amicrofilaraemic (Mf-) individuals on IgE/IL3 activated granulocytes...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28734897/exploiting-helminth-host-interactomes-through-big-data
#14
REVIEW
Javier Sotillo, Rafael Toledo, Jason Mulvenna, Alex Loukas
Helminths facilitate their parasitic existence through the production and secretion of different molecules, including proteins. Some helminth proteins can manipulate the host's immune system, a phenomenon that is now being exploited with a view to developing therapeutics for inflammatory diseases. In recent years, hundreds of helminth genomes have been sequenced, but as a community we are still taking baby steps when it comes to identifying proteins that govern host-helminth interactions. The information generated from genomic, immunomic, and proteomic studies, as well as from cutting-edge approaches such as proteogenomics, is leading to a substantial volume of big data that can be utilised to shed light on fundamental biology and provide solutions for the development of bioactive-molecule-based therapeutics...
July 19, 2017: Trends in Parasitology
https://www.readbyqxmd.com/read/28719267/comparison-of-cytokine-responses-in-ecuadorian-children-infected-with-giardia-ascaris-or-both-parasites
#15
Jill Weatherhead, Andrea Arévalo Cortés, Carlos Sandoval, Maritza Vaca, Martha Chico, Sophia Loor, Philip J Cooper, Rojelio Mejia
AbstractMore than 2 billion people are infected with parasites globally, and the majority have coinfections. Intestinal protozoa and helminths induce polarizing CD4(+) T-helper cell 1 (Th1) mediated cytokine responses within the host. Such immune polarization may inhibit the ability of the host to mount an adequate immune response for pathogen clearance to concurrent pathogens. The current study evaluated the plasma cytokine profile in Ascaris and Giardia coinfected children compared with Giardia- and Ascaris-only infected children...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28715423/antibody-trapping-a-novel-mechanism-of-parasite-immune-evasion-by-the-trematode-echinostoma-caproni
#16
Alba Cortés, Javier Sotillo, Carla Muñoz-Antolí, Javier Molina-Durán, J Guillermo Esteban, Rafael Toledo
BACKGROUND: Helminth infections are among the most prevalent neglected tropical diseases, causing an enormous impact in global health and the socioeconomic growth of developing countries. In this context, the study of helminth biology, with emphasis on host-parasite interactions, appears as a promising approach for developing new tools to prevent and control these infections. METHODS/PRINCIPAL FINDINGS: The role that antibody responses have on helminth infections is still not well understood...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28708895/yeast-expressed-recombinant-as16-protects-mice-against-ascaris-suum-infection-through-induction-of-a-th2-skewed-immune-response
#17
Junfei Wei, Leroy Versteeg, Zhuyun Liu, Brian Keegan, Ana Clara Gazzinelli-Guimarães, Ricardo T Fujiwara, Neima Briggs, Kathryn M Jones, Ulrich Strych, Coreen M Beaumier, Maria Elena Bottazzi, Peter J Hotez, Bin Zhan
BACKGROUND: Ascariasis remains the most common helminth infection in humans. As an alternative or complementary approach to global deworming, a pan-anthelminthic vaccine is under development targeting Ascaris, hookworm, and Trichuris infections. As16 and As14 have previously been described as two genetically related proteins from Ascaris suum that induced protective immunity in mice when formulated with cholera toxin B subunit (CTB) as an adjuvant, but the exact protective mechanism was not well understood...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28703913/a-suum-infection-modulates-inflammation-implication-of-cd4-cd25-hi-foxp3-t-cells-and-il-10
#18
Tiago de Oliveira Titz, Claudia Andréa Alves de Araújo, Cristina Satomi Enobe, Paula Ordonhez Rigato, Telma Miyuki Oshiro, Maria Fernanda de Macedo-Soares
Helminth infections have the ability to modulate host's immune response through mechanisms that allow the chronic persistence of the worms in the host. Here, we investigated the mechanisms involved on the suppressive effect of Ascaris suum infection using a murine experimental model of LPS-induced inflammation. We found that infection with A. suum markedly inhibited leukocyte influx induced by LPS into air pouches, suppressed secretion of pro-inflammatory cytokines (IL-1β, TNF-α and IL-6) and induced high levels of IL-10 and TGF-β...
July 13, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28695899/innate-scavenger-receptor-a-regulates-adaptive-t-helper-cell-responses-to-pathogen-infection
#19
Zhipeng Xu, Lei Xu, Wei Li, Xin Jin, Xian Song, Xiaojun Chen, Jifeng Zhu, Sha Zhou, Yong Li, Weiwei Zhang, Xiaoxiao Dong, Xiaowei Yang, Feng Liu, Hui Bai, Qi Chen, Chuan Su
The pattern recognition receptor (PRR) scavenger receptor class A (SR-A) has an important function in the pathogenesis of non-infectious diseases and in innate immune responses to pathogen infections. However, little is known about the role of SR-A in the host adaptive immune responses to pathogen infection. Here we show with mouse models of helminth Schistosoma japonicum infection and heat-inactivated Mycobacterium tuberculosis stimulation that SR-A is regulated by pathogens and suppresses IRF5 nuclear translocation by direct interaction...
July 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/28694301/helminth-antigens-counteract-a-rapid-high-fat-diet-induced-decrease-in-adipose-tissue-eosinophils
#20
Susan M van den Berg, Andrea D van Dam, Pascal J Kusters, Linda Beckers, Myrthe den Toom, Saskia van der Velden, Jan Van den Bossche, Irma van Die, Mariëtte R Boon, Patrick C N Rensen, Esther Lutgens, Menno P de Winther
Brown adipose tissue (BAT) activation and white adipose tissue (WAT) beiging can increase energy expenditure and have the potential to reduce obesity and associated diseases. The immune system is a potential target in mediating brown and beige adipocyte activation. Type 2 and anti-inflammatory immune cells contribute to metabolic homeostasis within lean WAT, with a prominent role for eosinophils and interleukin (IL)-4 induced anti-inflammatory macrophages. We determined eosinophil numbers in epididymal WAT (EpAT), subcutaneous WAT (ScAT) and BAT after 1 day, 3 days or 1 week of high-fat diet (HFD) feeding in C57Bl/6 mice...
July 10, 2017: Journal of Molecular Endocrinology
keyword
keyword
86512
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"