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How Toxoplasma gondii gets noticed
January 20, 2009Researchers provide insight into how Toxoplasma gondii, a common parasite of people and other animals, triggers an immune response in its host. The report will appear online on January 19th in The Journal of Experimental Medicine.
A strong immune response spares T. gondii-infected hosts from deadly infection-an event that may also benefit the parasite, which relies on survival of the host to ensure its own transmission. But how the infected host elicits an immune response isn't completely understood. Like many other parasites, T. gondii resides within specialized vesicles inside infected host cells, but the process by which peptides from the trapped bugs are processed by infected cells and presented to killer T cells is mysterious.
Here, Romina Goldszmid and her colleagues at the National Institutes of Health in Bethesda use T. gondii infections in mice to study how portions of the parasitic proteins escape the vesicle in a process known as cross-presentation. They find that the parasite gets noticed by the immune system when the membrane of the bug-containing vesicle fuses to the endoplasmic reticulum-an organelle normally involved in presenting pathogens to T cells-allowing a swap of parasitic peptides.
Rockefeller University Press
Rockefeller University Press
Immune Response Current Events and Immune Response News RSSCommon pain relief medication may encourage cancer growth
Although morphine has been the gold-standard treatment for postoperative and chronic cancer pain for two centuries, a growing body of evidence is showing that opiate-based painkillers can stimulate the growth and spread of cancer cells.
New culprit for viral infections among elderly -- an overactive immune response
Researchers at Yale School of Medicine have found that exaggerated responses of the immune system explain why the elderly succumb to viral infections more readily than younger people.
Thoughtful words help couples stay fighting fit
Couples who bring thoughtful words to a fight release lower amounts of stress-related proteins, suggesting that rational communication between partners can ease the impact of marital conflict on the immune system.
Researchers mobilizing global resources to test new treatments for severe H1N1 infection
An important, ground-breaking initiative is unfolding in the global critical care community in response to the H1N1 pandemic.
People with less education could be more susceptible to the flu
People who did not earn a high school diploma could be more likely to get H1N1 and the vaccine might be less effective in them compared to those who earned a diploma, new research shows.
Scientists successfully reprogram blood cells
Researchers have transplanted genetically modified hematopoietic stem cells into mice so that their developing red blood cells produce a critical lysosomal enzyme -preventing or reducing organ and central nervous system damage from the often-fatal genetic disorder Hurler's syndrome.
UCI embryonic stem cell therapy restores walking ability in rats with neck injuries
The first human embryonic stem cell treatment approved by the FDA for human testing has been shown to restore limb function in rats with neck spinal cord injuries - a finding that could expand the clinical trial to include people with cervical damage.
Hundreds of genes distinguish patients likely to survive advanced melanoma
Although the chances of surviving advanced melanoma aren't very good with current therapies, some patients can live for years with cancer that has spread beyond the skin to other organs.
New Notre Dame study provides insights into the molecular basis of tumor cell behavior
A new study by a team of researchers led by Crislyn D'Souza-Schorey, associate professor of biological sciences at the University of Notre Dame, sheds light on the molecular basis by which tumor cells modulate their surroundings to favor cancer progression.
New Synthetic Molecules Trigger Immune Response to HIV and Prostate Cancer
Researchers at Yale University have developed synthetic molecules capable of enhancing the body's immune response to HIV and HIV-infected cells, as well as to prostate cancer cells. Their findings, published online in the Journal of the American Chemical Society, could lead to novel therapeutic approaches for these diseases.
More Immune Response Current Events and Immune Response News Articles
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Mechanisms of Lymphocyte Activation and Immune Regulation XI: B Cell Biology (Advances in Experimental Medicine and Biology) (v. 11) by Sudhir Gupta (Editor), Frederick W. Alt (Editor), Max D. Cooper (Editor), Fritz Melchers (Editor), Klaus Rajewsky (Editor) In recent years, major developments have been made in understanding various genetic and epigenetic regulatory processes that are critical for the generation of B cell repertoires. These include the role of chromatin regulation and nuclear organization in understating the IgH gene regulation. A role and mechanism of DNA repair proteins in somatic hypermutation has been elucidated. Genetic mutation studies have been instrumental in providing insight into some of the mechanisms involved in targeting CSR to various switch DNA regions located upstream of C region genes, especially a role of AID motifs, transcription, and R-loops. Recent studies support a dominant role of receptor editing in central B cell tolerance and signaling pathways that regulate receptor editing in self-reactive and... |
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Source Naturals Aller-Response, Tablets, 90 tablets (Pack of 2) by Source Naturals Dietary supplement. Quercetin, Ginkgo & Synephrine. Aller-Response is a seasonal formula featuring quercetin. Human cell culture studies with quercetin demonstrated its capability to inhibit the release of histamines. Ginkgolide B, in human cell culture s |
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Understanding Hereditary Angioedema: A Mysterious Out-Of-Control Immune Response Directed By: Information Television Network | |
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Understanding Hereditary Angioedema: A Mysterious Out-of-Control Immune Response Part of the award winning public television series Healthy Body/Healthy Mind. Its called Hereditary Angioedema and its so rare popular television shows have used it as one of their mystery diagnoses. But for the people who suffer with this condition the drama associated with an episode of hereditary angioedema is anything but entertaining. It can be harrowing and horrifying because a person's face or knees or other parts of the body that once looked normal suddenly takes on grotesque proportions due to an unusual amount of swelling. This condition baffled scientists and researchers for many years but today there are new treatments for hereditary angioedema that are helping people with this condition live healthy normal lives. In this program we'll hear what the experts have discovered... |
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Chlamydia pneumoniae immunology: Innate Immune Responses induced by Chlamydia pneumoniae infection by Vjera Magdalenic (Author) Chlamydiae are common pathogens that cause a number of serious but preventable diseases in both humans and animals. In the recent years, Chlamydia pneumoniae has emerged as a major cause of human respiratory disease and more importantly, it has been linked to the establishment and exacerbation of serious chronic diseases including atherosclerosis and ischaemic heart disease, multiple sclerosis and reactive arthritis. There has been a lot of research into host responses to chlamydial infections and the development of immunopathology; but considerable gaps in our knowledge remain. The work described here aimed to analyse the early innate immune responses in the lung following C. pneumoniae infections with a view to better understanding host-pathogen interactions and the... |
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Vetri-DMG Tablets for Dogs & Cats (90 Tabs) by vetri science Vetri-DMG Tablets for Dogs & Cats (90 Tabs) (Supports Performance and Immune System Function) Vetri DMG is recommended to help support proper immune response, cardiovascular and skin health, glucose metabolism and proper nerve and brain functions. |
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Metabolic Maintenance L-Glutamine 500 mg 100 caps by Metabolic Maintenance L-Glutamine 500 mg 100 caps |
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Primer to The Immune Response by Tak W. Mak (Author), Mary Saunders (Author) Primer to The Immune Response is an invaluable resource for college students, university undergraduates and students in medicine and other health professions who need a concise but complete and understandable introduction to immunology. This book is written in the same engaging conversational style as the published reference book The Immune Response: Basic and Clinical Principles and conveys the same fascinating appeal of immunology. The authors bring clarity, readability and continuity of voice to an audience that requires only a brief survey of the most fundamental concepts in basic and clinical immunology. Primer to The Immune Response is beautifully illustrated with over 200 superb figures and 36 full color plates, and further enhanced by the inclusion of 60 tables and 6... |
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Bedside Emergencies: Anaphylactic Shock (Volume 3) Also With: Concept Media (Primary Contributor) Describes the body's normal immune response and how it responds physiologically to allergens. Differentiates between anaphylactic and anaphylactoid reactions, describing signs and symptoms. Describes initial interventions to slow down or prevent reaction from becoming life-threatening, as well as more aggressive therapy for severe, progressive reactions. |
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Selected Aspects of Cancer Progression: Metastasis, Apoptosis and Immune Response (Cancer Growth and Progression) by Hans E. Kaiser (Author), Hans E. Kaiser (Editor), Aejaz Nasir (Editor) The processes of tumor metastasis, apoptosis and anti-tumor immune response are among the most complex yet rapidly advancing fields in the area of cancer research. This monogaph presents a comprehensive coverage of the recent advances in the various key concepts in these fundamental aspects of human cancer. It would be of particular interest to members of the cancer research community, especially those who are actively involved in the study of basic and translational aspects of human cancer. Specifically, this volume includes authentic subject reviews by leading experts on the following aspects: Control of tumor cell motility Role of tumor-cell adhesion and migration in organ-selective metastasis-formation Tumor heterogeneity in relation to invasion and metastasis and its... |
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