Tag Archives: cdiff research treatments

Researchers At University of Texas Health Science Center and Graduate School of Biomedical Sciences in Houston Have Uncovered How C. difficile Produces the Toxins A and B That Are Responsible For Causing Disease

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In the battle against drug-resistant pathogens, genetic research holds promising answers to our toughest threats. A new study shows that the best tool for
treating Clostridium difficile
infections could be within the genome of the bacteria itself.

Researchers at the University of Texas Health Science Center and the Graduate School of Biomedical Sciences in Houston have uncovered an important new finding to learn just how the C. difficile bacteria produces toxins, offering some new direction for the development of non-antibiotic drugs to fight dangerous C. difficile infections (CDI).

Strain on already stressed healthcare industry —–   The bacteria are one of the more virulent and widespread drug-resistant pathogens responsible for healthcare associated infections around the world, costing acute care facilities nearly $4.8 billion dollars a year in excess healthcare costs in the United States.

HOW is C. diff. Acquired?   —-   CDIs are linked to the use of broad spectrum antibiotics, which when used to treat infections can also suppress the beneficial bacteria that live in our guts and protect us from infections.   When that intestinal microflora is compromised, individuals become more susceptible to CDIs when exposed to C. difficile bacteria on contaminated surfaces or other individuals who are carrying the bacteria.

CDC Report —    C. difficile works by producing two toxins, toxin A and toxin B, that cause life-threatening diarrhea as well as pseudomembranous colitis, toxic megacolon, perforations in the colon, sepsis and — death. According to a 2015 study from the Centers for Disease Control and Prevention (CDC), there are nearly half a million CDIs in the United States each year, and about 15,000 of those cases result in deaths. The CDC considers C. difficile a public threat needing urgent and aggressive action.

The authors of the new study from the University of Texas have uncovered just how                 C. difficile produces the toxins A and B that are responsible for causing disease.

They studied several strains of the bacteria and found that some encode two Agr loci in their genomes, designated agr1 and agr2. The agr1 locus is present in all of the C. difficile strains sequenced to date, whereas the agr2 locus is present in a few strains.

Until recently, the function of these loci were not known. To understand their roles in toxin regulation and pathogenesis, the researchers used allelic exchange to delete components of agr1 and agr2 and then examined the mutants for toxin production. In their results, they found that the agr1 mutant cannot produce toxins A and B – in their model the mutant was able to colonize but could not produce disease.

These findings offer a potential new approach to treating CDIs for a global medical community vexed by the dangerous pathogen and in need of a novel solution.

“The toxins have become promising non-antibiotic treatment targets,” write the authors. “Here, we have identified a pathway responsible for activating the production of the toxins.

This important finding opens up a unique therapeutic target for the development of a novel non-antibiotic therapy for C. difficile infections.”

Study author Charles Darkoh, PhD, explains how his team plans on building on their research findings. “By crippling their toxin-making machinery, C. diff cannot make toxins and thus cannot cause disease. My laboratory is already working on this and was awarded a 5-year National Institutes of Health grant to investigate and develop an oral compound we have identified that inactivate the toxins and block the toxin-making machinery
of C. diff by targeting this pathway.”

To read article in its entirety click on the link below:

Medicine, Like All Science, Is Dynamic and Forever Evolving and Why It Is Regarded As “The Practice Of Medicine.”

Medicine, like all science, is dynamic and evolving—that’s why it is referred to as “the practice of medicine.”

Accepted treatments of one era might be discarded later as “pseudoscience.” What is considered “experimental” today might become the standard of treatment tomorrow.

Fortunately, there is something called peer review and scientific standards. Also, most health care providers have embraced the process of gathering as much evidence as possible instead of treating patients like lab rats.

There is no safe substitute for the intimate, one-on-one relationship between a patient and a physician. This will continue to be true as long as doctors remember that medicine is a science and an art, full of both expected outcomes and surprising solutions.

The phrase “Nine out of 10 doctors recommend…” is often used to promote widely accepted treatments, so that one outlier doctor must be responsible for all the rather wacky treatments that we other physicians get asked about every week. And although some of these treatments seem beyond bizarre, they can also be incredibly interesting.

At least they were to the three physicians listed in this article’s byline, including
Dr. H. Eric Bender, who says his fascination with peculiar medical practices started in medical school. During one of his early rotations, he was shocked to learn that not only could he order leeches for a patient in the hospital but he could specify where they were to be placed as well: left leg, right arm or whole body. (In case you’re wondering, to precisely “aim” a leech, place it in a small cup with a very small hole cut in the bottom. That hole is then aligned with the area on the patient requiring blood removal and voilà! Bloodthirsty segmented worms are suddenly hard at work.
(Dr. Bender does not recommend trying this at home.)

Now, thanks to our internet-sparked society of do-it-yourselfers, Bender’s fascination with the unconventional cure has continued to grow as he has contemplated conversations with his patients and researched a wide range of (seemingly) ridiculous but sometimes effective remedies.
“Unfortunately, the physician’s oath to “do no harm” has been replaced in many
clinics with “do clean up this mess.”

For example, a physician or two in the not so distant past recommended that children smoke tobacco to treat pica, a condition in which people feel compelled to chew on non-nutritious substances like rocks, sand or glass. Some doctors over the years suggested that patients use cocaine and heroin to remedy toothaches and persistent cough, respectively. (In addition to references, the book includes pictures as evidence.) Alcohol has been recommended to pregnant women for its health benefits—Guinness beer is rich in iron—and not just by Irish physicians. Others practicing medicine have suggested using hookworms to cure asthma (causing dangerous infections).

The list of dangerous substances, organisms and animal byproducts that people have used over the years to treat everything from low libido to sexually transmitted diseases goes on and on. Fortunately, most of the practices did not, as further research demonstrated the dangers of many of them.

“Weird medicine” is not limited to just medical practices and treatments. A look into the medical literature reveals that it is replete with research and studies that aren’t particularly well-designed or are far-fetched to the point of absurdity.

Some fascinating practices seemed like terrible ideas but are actually so well-supported by research that they are considered the gold standard for treatment of certain illnesses.

As an example, consider that antibiotics frequently kill good bacteria while also killing the bad bacteria doctors are trying to eliminate.

“Good” bacteria suppress the growth of bad bacteria. So when the good bacteria are wiped out, many individuals develop a type of intestinal infection known as Clostridium difficile
(or C. diff
). C. diff is often difficult to treat with antibiotics, since they typically caused the problem in the first place. Fortunately, one treatment has a  high rate of s
uccess: fecal transplantation. Yes, you read that correctly. Doctors place stool from a donor inside the patient’s gastrointestinal system. Intuitively, you might think putting my feces into your gut would cause serious infections, but the donated good bacteria help eradicate infection.

To learn more about FMT:  https://cdifffoundation.org/2016/03/02/fecal-transplants-fmt-treating-clostridium-difficile-infections-u-s-food-and-drug-administration-fda-seeks-comment-on-what-investigational-new-drug-ind-requirements-to-waive/

IHow about maggots instead? Maggot therapy involves using those little legless larvae to prevent a wound infection. Maggots selectively target and eat dead tissue that is difficult to remove surgically without taking healthy tissue with it. Although doctors have been aware of this fact since at least the 1930s, this treatment was not regularly used for decades, particularly as antibiotic use to treat and manage wounds rose in popularity. However, after a recent “rediscovery” of maggot therapy, more than 800 health care institutions use it today. You can be sure pharmaceutical companies are already working on a way to charge exorbitant prices for the little larvae.

Patients performing their own research online can spark informative conversations with their doctors, even if they do sometimes suggest things that make a person want to scream, or puke.

Nevertheless, although “Dr. Google” is punctual and doesn’t require a co-pay, it is still not qualified to diagnose and treat.

There is no safe substitute for the intimate, one-on-one relationship between a patient and a physician. This will continue to be true as long as doctors remember that medicine is a science and an art, full of both expected outcomes and surprising solutions.

So to our patients: Be wary of charlatans but keep an open mind. Bring all your questions to a physician and ask away. To our fellow physicians: Listen to your patients. Talk with them, not to them. And remember: If you can’t do any good, at least do no harm.

 

H. Eric Bender, Murdoc Khaleghi and Bobby Singh are the authors of 1 Out of 10 Doctors Recommends: Drinking Urine, Eating Worms, and Other Weird Cures, Cases, and Research from the Annals of Medicine.

 

To read this article in its entirety, click on the link below:

http://www.newsweek.com/2016/08/26/weird-medicine-doctor-google-pseudoscience-491240.html