Microplastic Particles Linked to IBD

By Pat Anson, PNN Editor

Microplastics — tiny bits of plastic so small they are invisible to the naked eye --- can be found in our food, water and even the air we breathe. But research is only beginning on the prevalence and health effects of plastic particles in humans.

A 2020 study found that babies fed formula from plastic bottles swallowed millions of microplastic particles every day. And a recent review that looked at the impact of microplastics on human cells found evidence of cell death, immune response and damage to cell walls.

“We are exposed to these particles every day: we’re eating them, we’re inhaling them. And we don’t really know how they react with our bodies once they are in,” lead author Evangelos Danopoulos, a postgraduate student at Hull York Medical School in the UK told The Guardian.

For the first time, Chinese researchers have now found evidence that people with inflammatory bowel disease (IBD) have more microplastics in their feces, suggesting that plastic particles in the digestive tract could play a role in the development of Crohn’s disease and ulcerative colitis.

Researchers obtained fecal samples from 52 people with IBD and 50 healthy people from different geographic regions of China. They found that feces from the IBD patients had significantly more microplastics than the control group – an average of 41.8 particles per gram in the IBD group vs. 28 particles in healthy people. People with more severe IBD symptoms had higher levels of microplastics. Their particles also tended to be smaller.

ENVIRONMENTAL SCIENCE AND TECHNOLOGY

Researchers surveyed both groups and found that people who consumed more bottled water and takeaway food, and were often exposed to dust had more microplastics (MPs) in their feces. The two most common types of plastic found were polyethylene terephthalate (PET; used in bottles and food containers) and polyamide (PA; found in food packaging and textiles).

Still unclear is whether exposure to microplastics causes or contributes to IBD, or whether people with IBD simply accumulate more microplastics in their digestive tracts because of their disease.

“We conclude that the plastic packaging of drinking water and food and dust exposure are important sources of human exposure to MPs. Furthermore, the positive correlation between fecal MPs and IBD status suggests that MP exposure may be related to the disease process or that IBD exacerbates the retention of MPs,” researchers reported in the journal Environmental Science & Technology.

The prevalence of IBD is rising around the world. A 2015 CDC study estimated that about 3.1 million adults in the U.S. were diagnosed with IBD, nearly double the 1.8 million Americans who reported having IBD in 1999. The researchers found an association between IBD and people with lower income and education levels, but did not look into the role of microplastics.

Experts Say IBD Patients Not at Higher Risk From Coronavirus

By Pat Anson, PNN Editor

Patients with Crohn's disease, ulcerative colitis and other inflammatory bowel diseases (IBD) are not at greater risk from the coronavirus and should continue their regular therapies, according to new guidance by the American Gastroenterological Association (AGA) published in the journal Gastroenterology.

IBD is an immune system disorder that causes abdominal pain, diarrhea and weight loss. Symptoms and progression of the disease can be controlled by medications such as prednisone that suppress the immune system, which has led to concern that patients taking the drugs may be more susceptible to coronavirus infections.

Some IBD patients also need to visit medical facilities for infusions and other procedures, which may increase their risk of exposure to the SARS-CoV-2 virus.

“Despite the potential for increased exposure to SARS-CoV-2, the limited available data and expert opinion suggest that patients with IBD do not appear to have a baseline increased risk of infection with SARS-CoV-2 or development of COVID-19,” wrote lead author David Rubin, MD, Co-Director of the Digestive Diseases Center at University of Chicago Medicine.  

“It is unclear whether inflammation of the bowel per se is a risk for infection with SARS-CoV-2, but it is sensible that patients with IBD should maintain remission in order to reduce the risk of relapse and need for more intense medical therapy or hospitalization.”

Rubin and his co-authors say there is limited information on the severity of coronavirus symptoms in IBD patients, although one study in China found they were “more likely to be hospitalized.” While COVID-19 is primarily a respiratory illness, the virus can cause digestive problems and is detected in stool samples.

The experts recommend that IBD patients who do not have coronavirus symptoms continue their current treatments to avoid relapsing.

“Aside from the obvious negative consequences of a relapse, relapsing IBD will strain available medical resources, may require steroid therapy or necessitate hospitalization, outcomes that are all much worse than the known risks of existing IBD therapies,” Rubin wrote. “Similar to the recommendations to the general population, patients with IBD should practice strict social distancing, work from home, have meticulous hand hygiene, and separate themselves from known infected individuals.”

Infusion centers should have a protocol to pre-screen IBD patients for fever and other coronavirus symptoms, and providers and patients should wear masks and gloves.

For patients who test positive for the coronavirus or develop symptoms, the experts recommend lower doses of prednisone and a temporary halt to biological therapies and immune suppressing drugs such as thiopurines, methotrexate, and tofacitinib.   

“For the patient with COVID-19, adjustment of the medical therapy for IBD is appropriate, based on the understanding of the immune activity of the therapy and whether that therapy may worsen outcomes with COVID-19,” Rubin wrote. “For hospitalized patients with severe COVID-19 and risks of poor outcomes, IBD therapy likely will take a back seat, but choice of therapies for COVID-19 should take into account the co-existing IBD, if feasible.”

Over 3 million people in the United States have IBD. The AGA has developed a flow chart for providers treating IBD during the COVID-19 outbreak and a reference chart for IBD patients.

Does Washing Your Hands Raise Risk of IBD?

By Pat Anson, Editor

Many of us were taught as children to always wash our hands before leaving the bathroom and before meals. But that basic sanitary practice may be contributing to an increase in inflammatory bowel diseases (IBD) such as Crohn’s disease and ulcerative colitis, according to a new study published in the journal Science.

Researchers at New York University’s Langone Medical Center tested the so-called “hygiene hypothesis” – the theory that some intestinal parasites and bacteria are beneficial because they help balance the immune system and reduce IBD rates. Sanitary practices have sharply reduced gut worm infections in developed nations, which now have some of the highest rates of Crohn’s disease and ulcerative colitis.

“Our findings are among the first to link parasites and bacteria to the origin of IBD, supporting the hygiene hypothesis,” says parasitologist P’ng Loke, PhD, an associate professor at NYU Langone.

“The prevalence of IBD is much less in regions of the world which have heavy worm infection. In fact, I got interested in the question of how worms can be beneficial when I was contacted by an individual who had deliberately infected himself with worms to treat his symptoms of IBD and was able to put his disease into remission.”

Loke and his colleagues found that laboratory mice infected with intestinal worms experienced a thousand-fold decrease in Bacteroides — a type of bacteria linked to people with higher risk of IBD. At the same time, the number of Clostridia, a bacterium known to counter inflammation, increased tenfold in the mice.

RESEARCHERS P'ng Loke and Ken Cadwell, NYU Langone Medical Center

Researchers believe the immune response to the worms triggers the growth of Clostridia, which then either outcompete Bacteroides for nutrients or release toxins that are harmful to them.

In a second phase of the study, researchers gave mice an infusion of Clostridia – without the use of parasites – and found that it reduced the presence of Bacteroides.

“That gives us a lot of hope in terms of IBD therapy because maybe we don’t need to give people parasitic worms, which can be harmful and cause disease, and instead target the harmful bacteria by replacing them with healthy bacteria,” says microbiologist Ken Cadwell, PhD, an assistant professor at NYU Langone and the Skirball Institute of Biomolecular Medicine. “Our study could change how scientists and physicians think about treating IBD.”

Researchers say the hygiene hypothesis may also apply to other autoimmune diseases, including multiple sclerosis, rheumatoid arthritis, and type 1 diabetes, in which processes meant to attack foreign invaders instead become oversensitive and trigger an immune response to the body’s own cells.

IBD is a chronic or recurring immune response and a painful inflammation of the gastrointestinal tract. Inflammation affects the entire digestive tract in Crohn’s disease, but only the large intestine in ulcerative colitis.

According to the Crohn's and Colitis Foundation of America, IBD affects about 1.6 million Americans and tends to run in families. Caucasians are more likely than other ethnic groups to have IBD. The diseases are especially prevalent in Jews of European descent (Ashkenazi Jews). African Americans and Hispanics in the United States are also increasingly affected.

The Importance of Awareness

By Jennifer Martin, Columnist

The other day I was made aware of a malicious Facebook post that was written about an acquaintance who was making others aware that it was World IBD Day.  She was simply educating others about inflammatory bowel disease and the difficulties that arise from having such a condition. 

The Facebook poster declared how tired he was of people posting about their diseases and trying to gain pity from others. 

The day before, another poster with a J-pouch due to ulcerative colitis mentioned that while she was leaving the bathroom a woman told her that she should use a private bathroom because what she was doing was disgusting. 

Not long before this, a chronic pain patient of mine told me she received a dirty look from someone in a grocery store parking lot because she parked in a handicap parking space, even though her handicap placard was hanging clearly from her rear-view mirror.

The same day, another patient told me that he doesn’t feel like his doctor hears him when he tells him how much pain he is in.

Unfortunately, this kind of misunderstanding and ignorance happens all of the time. People with invisible chronic pain or chronic illnesses are often the recipients of hurtful words or spiteful looks from people with have no clue what they are going through on the inside.

This is why awareness is so important. About half of all American adults -- 117 million people --have one or more chronic health conditions, yet many of us are still largely misunderstood.  We may be feeling awful, but typically we look fine from the outside. 

Many people think chronic pain patients are addicts who just want drugs.  Some who don’t understand Complex Regional Pain Syndrome (CRPS/RSD) think it’s a psychological problem.  And others believe that fibromyalgia isn’t real and that patients only want sympathy.

It is important for people to have a better understanding of what we’re going through so that the stigmas, hurtful words, and malevolent looks begin to fade.  That cannot happen if we remain silent.

May is a big awareness month for chronic pain and chronic illness:

Fibromyalgia and Chronic Pain Awareness Day was May 12.

World IBD day was May 19.

World MS day is May 27.

May is also Arthritis Awareness month.

So keep wearing those awareness t-shirts -- and keep blogging, educating, and posting.  Will it help?  I am hopeful.

Jennifer Martin, PsyD, is a licensed psychologist in Newport Beach, California who suffers from rheumatoid arthritis and ulcerative colitis. In her blog “Your Color Looks Good” Jennifer writes about the psychological aspects of dealing with chronic pain and illness. 

Jennifer is a professional member of the Crohn’s and Colitis Foundation of America and has a Facebook page dedicated to providing support and information to people with Crohn’s, Colitis and Digestive Diseases, as well as other types of chronic pain.

The information in this column should not be considered as professional medical advice, diagnosis or treatment. It is for informational purposes only and represents the author’s opinions alone. It does not inherently express or reflect the views, opinions and/or positions of Pain News Network.