Breaking News
April 26, 2019 - Porvair Sciences’ ultra-flat Krystal glass bottom microplates for imaging applications
April 26, 2019 - Medicines Discovery Catapult’s Virtual R&D Discovery Services platform announce twenty-two partnerships
April 26, 2019 - How optimism can bias prognosis in serious illness
April 26, 2019 - Hospitals Chafe Under Medicare’s New Payment Rule For Off-Campus Clinics
April 26, 2019 - New drug minimizes damage after a heart attack by 60 percent
April 26, 2019 - Synthesizing Modified and Pharmaceutically Relevant Peptides
April 26, 2019 - Using blood thinners in heart failure patients associated with reduced risk of thromboembolic events
April 26, 2019 - Study finds different amounts of physical therapy for stroke patients
April 26, 2019 - Psychologists study how application of cortisol affects exposure therapy for anxiety disorders
April 26, 2019 - SibFU scientists create multilayer gilded nanodisks for medical applications
April 26, 2019 - Marking the start of Pediatric Sepsis Week
April 26, 2019 - The Inflamed Brain | NIH News in Health
April 26, 2019 - Stress-free training may enhance surgical skill
April 26, 2019 - Newsom: California Leads On Prescription Drugs
April 26, 2019 - Exploring novel strategies to heal damage after a heart attack
April 26, 2019 - Small army of tiny robots can remove dental plaque
April 26, 2019 - Cellular communication in emotion-processing brain region motivates us to keep eating tasty food
April 26, 2019 - Greater spousal life satisfaction associated with lower mortality risk
April 26, 2019 - Genetic mutations in brain development lead to discovery of rare genetic diseases
April 26, 2019 - Speech-Based Algorithm Helps ID Posttraumatic Stress Disorder
April 26, 2019 - First birth via robot-assisted uterus transplant
April 26, 2019 - Studies verify novel method of HIV transmission among injection drug users and effective prevention
April 26, 2019 - CircRNAs bind to dsRNA-activated protein kinase which is linked to innate immunity
April 26, 2019 - MR Solutions wins third Queen’s Award
April 26, 2019 - Study details how optimism can bias prognosis in serious illness
April 26, 2019 - Vascular surgery after firearm injury linked with higher morbidity and mortality
April 26, 2019 - New findings about aggressive blood cancer may help develop drugs with less harmful side effects
April 26, 2019 - People with intense feelings of responsibility susceptible to developing OCD, anxiety
April 26, 2019 - Despite expansion of insurance coverage for depression, treatment rates are lower than expected
April 26, 2019 - Huge Malaria vaccine trial in Malawi
April 26, 2019 - Can Obesity Shrink Your Brain?
April 26, 2019 - This oral appliance could help you (and your partner) sleep better
April 26, 2019 - Myelination deficits cause abnormal hypersocial behavior associated with Williams syndrome
April 26, 2019 - New sepsis detector uses photonics to make accurate diagnosis in less than thirty minutes
April 26, 2019 - New study describes process to diagnose rare genetic diseases in record time
April 26, 2019 - Scientists and patients gather in Vancouver to discuss about Stevens-Johnson syndrome
April 26, 2019 - Advance in breakthrough cancer treatment eliminates serious side effects
April 26, 2019 - Discovery about cold sensing could pave way for new pain relief drugs
April 26, 2019 - Children often turn to sugary drinks instead of water
April 26, 2019 - Genome analysis shows the combined effect of many genes on cognitive traits
April 26, 2019 - Patients Caught In Middle Of Fight Between Health Care Behemoths
April 26, 2019 - Drug overdoses among adolescents and young adults on the rise
April 26, 2019 - Implementing a Paperless QC Micro Laboratory”
April 25, 2019 - Obesity linked to a reduction in gray matter
April 25, 2019 - Smart assistants could help combat opioid crisis
April 25, 2019 - Diagnostic stewardship strategy reduces inappropriate testing
April 25, 2019 - Three-antibiotic cocktail eradicates ‘persister’ Lyme bacteria in mouse model
April 25, 2019 - Study investigates how early blindness shapes sound processing
April 25, 2019 - Outcomes Worse for Cancer Patients Seen at Noncancer EDs
April 25, 2019 - Link found between temperament of high-risk infants and obesity
April 25, 2019 - Al Letson explores ties between journalists and doctors at Medicine and the Muse symposium
April 25, 2019 - New mobile phone game can detect people at risk of Alzheimer’s
April 25, 2019 - Scientists discover trigger region for absence epileptic seizures
April 25, 2019 - Stretchy wearable patch can do a health check while you work out
April 25, 2019 - Exercise activates brain circuits associated with memory in older adults
April 25, 2019 - Veggies, Fruits and Grains Keep Your Heart Pumping
April 25, 2019 - Healthy meal kits can boost children’s long-term health
April 25, 2019 - Designing an inexpensive surgical headlight: A Q&A with a Stanford surgeon
April 25, 2019 - States Weigh Banning A Widely Used Pesticide Even Though EPA Won’t
April 25, 2019 - Integrator complex proteins are crucial for healthy brain development in fruit flies, study finds
April 25, 2019 - Device converts brain signals into speech, offering hope for patients
April 25, 2019 - Measles vaccination rates are a ‘public health time bomb’
April 25, 2019 - Maths made easier for scientists students who shun the subject wins award
April 25, 2019 - Researchers decode how cancer drug works in brains of Parkinson’s disease patients
April 25, 2019 - Smarter Brain Cancer Trial Comes to Columbia
April 25, 2019 - Researchers Seek Sage Advice Of Elders On Aging Issues
April 25, 2019 - New chemical synthesis strategy leads to identification of novel, simpler derivatives
April 25, 2019 - Vanderbilt investigators discover link between vascular biology and eye disease
April 25, 2019 - Feces transplantation is effective and provides economic benefits
April 25, 2019 - Eisenhower Health first in Southern California to offer new lung valve treatment for COPD/emphysema
April 25, 2019 - Johns Hopkins researchers uncover role of neurotransmitter in the spread of aggressive cancers
April 25, 2019 - Porvair Sciences offers highly effective P3 microplate for biological sample clean-up
April 25, 2019 - Air pollution increases risk for respiratory hospitalization among childhood cancer survivors
April 25, 2019 - We are sitting more! How bad is that?
April 25, 2019 - Majority of stroke survivors not screened for osteoporosis, despite increased risk
April 25, 2019 - ADHD Screening: MedlinePlus Lab Test Information
April 25, 2019 - Cellular alterations increase vulnerability of obese and diabetic individuals to infection
April 25, 2019 - Association Insurance Pushes On Despite Court Ruling
April 25, 2019 - Traditional and e-cigarette users may be more receptive to smoking cessation interventions
April 25, 2019 - Delving into tumor’s cellular lineage may offer clues for customized therapies
Researchers identify factors behind inflammation in immunodeficiency patients

Researchers identify factors behind inflammation in immunodeficiency patients

image_pdfDownload PDFimage_print

Oregon State University researchers have discovered two key factors behind the intestinal inflammation that plagues people suffering from a disorder that affects their immune system.

The findings, published in Clinical Immunology, are important because common variable immunodeficiency, known as CVID, afflicts hundreds of thousands of people worldwide.

A significant proportion of them will have potentially life-threatening intestinal problems that include improper absorption of nutrients, particularly fat.

CVID patients aren’t able to produce enough antibodies, Y-shaped proteins that mark invaders such as viruses and bacteria for destruction by the immune system. That means those people are highly susceptible to infection that often leads to chronic conditions, especially in their lungs, ears and sinuses.

In roughly 90 percent of the cases, CVID’s cause is an undetermined mix of genetic triggers; the other 10 percent have a known genetic cause.

Overall, about 15 percent of CVID sufferers will end up with intestinal inflammation that will show up as weight loss associated with severe diarrhea.

Researchers led by Andrey Morgun of the OSU/OHSU College of Pharmacy and Natalia Shulzhenko of Oregon State’s Carlson College of Veterinary Medicine used a novel computational approach called transkingdom network analysis to determine that a particular bacterium, Acinetobacter baumannii, is one of the main microbes responsible for CVID enteropathy.

“That bacterium had not been previously found to cause intestinal illness,” said Morgun, associate professor of pharmaceutical sciences.

The study, which involved 15 patients and several control subjects, also showed that CVID patients with enteropathy have dramatically lower levels of immunoglobulin A—the main antibody of the mucous membranes—in the tissue of their duodenum than do CVID patients who don’t have enteropathy. The duodenum is the first part of the small intestine, just beyond the stomach.

“This finding strongly suggests that CVID patients with enteropathy exhibit more mucosal immunodeficiency than those without and are therefore more at risk for a form of gut infection that could cause intestinal inflammation,” Morgun said.


Explore further:
Development of autoimmunity in patients with common variable immune deficiency

More information:
Natalia Shulzhenko et al, CVID enteropathy is characterized by exceeding low mucosal IgA levels and interferon-driven inflammation possibly related to the presence of a pathobiont, Clinical Immunology (2018). DOI: 10.1016/j.clim.2018.09.008

Journal reference:
Clinical Immunology

Provided by:
Oregon State University

Tagged with:

About author

Related Articles