Antioxidant-Enriched Multivitamin May Decrease Respiratory Illnesses

MedicalResearch.com Interview with:

Scott D Sagel MD PhD
Professor of Pediatrics
University of Colorado School of Medicine
Aurora, Colorado

MedicalResearch.com: What is the background for this study?

Response: Inflammation is an important feature of cystic fibrosis (CF) lung disease and contributes to lung damage and lung function decline in CF. We need safe and effective anti-inflammatory treatments in CF. Anti-oxidant therapy has been an area of promise, but with mixed results in CF.

This clinical trial, conducted at 15 CF centers affiliated with the cystic fibrosis Foundation Therapeutics Development Network, enrolled 73 patients who were 10 years and older (average age 22 years), with pancreatic insufficiency, which causes malabsorption of antioxidants. Subjects were randomized to either a multivitamin containing multiple antioxidants including carotenoids such as beta(β)-carotene, tocopherols (vitamin E), coenzyme Q10 (CoQ10), and selenium or to a control multivitamin without antioxidant enrichment. The antioxidants used in the study were delivered in a capsule specifically designed for individuals with difficulties absorbing fats and proteins, including those with cystic fibrosis.

MedicalResearch.com: What are the main findings?

Response: Antioxidant supplementation was safe and well-tolerated. Supplemental antioxidants increased antioxidant concentrations in the bloodstream in treated subjects and temporarily reduced inflammation in the blood at four weeks but not 16 weeks. Airway inflammation, as measured in sputum, did not change significantly with antioxidant treatment. Importantly, antioxidant treatment appeared to both prolong the time to the first respiratory illness requiring antibiotics and reduce the frequency of respiratory illnesses they experienced.

MedicalResearch.com: What should readers take away from your report?

Response: Taking a specially formulated antioxidant-enriched multivitamin, containing multiple dietary antioxidants, may decrease respiratory illnesses in people with cystic fibrosis. While more research needs to be done to find a treatment that delivers a sustained anti-inflammatory effect, we believe the prolonged time patients had before their first respiratory illness is clinically meaningful. Also, the cost of a dietary antioxidant-enriched multivitamin is relatively modest compared to other currently available therapies that have been proven to reduce pulmonary exacerbations in cystic fibrosis.

MedicalResearch.com: What recommendations do you have for future research as a result of this study?

Response: We still don’t know the optimal dosing of these various dietary antioxidants. We also don’t know the added benefit of antioxidant supplementation in the era of CFTR modulator therapy, emerging treatments that get at the basic protein defect in cystic fibrosis.

MedicalResearch.com: Is there anything else you would like to add?

Response: This clinical trial, funded by a grant from the Cystic Fibrosis Foundation, was an investigator-initiated study led by Scott D. Sagel, MD, PhD, a Professor of Pediatrics at Children’s Hospital Colorado and Director of the University of Colorado Cystic Fibrosis Center. It was not an industry initiated or funded trial. Callion Pharma manufactured the antioxidant-enriched and control multivitamins and provided them at no charge for this study.

MedicalResearch.com: Thank you for your contribution to the MedicalResearch.com community.

Citation:
Effects of an Antioxidant-enriched Multivitamin in Cystic Fibrosis: Randomized, Controlled, Multicenter Trial
Scott D Sagel , Umer Khan , Raksha Jain , Gavin Graff , Cori L Daines , Jordan M Dunitz , Drucy Borowitz , David M Orenstein , Ibrahim Abdulhamid , Julie Noe , John P Clancy , et al
https://doi.org/10.1164/rccm.201801-0105OC PubMed: 29688760
American Journal of Respiratory and Critical Care Medicine

Published Online: April 24, 2018

Note: Content is Not intended as medical advice. Please consult your health care provider regarding your specific medical condition and questions.

Original interview article here. 

Importance of Early Diagnosis, Treatment of NTM Infections

By Ashraf Malhas, PhD.

An earlier diagnosis and treatment of nontuberculous mycobacteria (NTM) infection in patients with cystic fibrosis (CF) may positively affect the patient’s lung function, a study suggests.

NTM are a group of bacterial species, found in soil and water, which are not usually associated with human disease, except if they infect susceptible individuals, such as CF patients.

An increasing incidence of NTM infections in CF patients has been observed, with recent studies reporting a prevalence of 32.7%. The exact reasons behind this, the risk factors, the species involved, and effective treatments for NTM infections in CF patients remain largely unknown.

In the study “Clinical course and significance of nontuberculous mycobacteria and its subtypes in cystic fibrosis,” published in the journal BMC Infectious Diseases, researchers analyzed the prevalence of NTM infections in CF patients to identify factors associated with these infections, as well as monitor current treatments.

The study initially involved 360 CF patients, of whom 30 (8%) were identified as being positive for NTM infection. Of these, 28 patients were further analyzed, and their results compared with 26 matched CF patients not infected with NTM (the control group).

Within the NTM group, 17 patients were infected with a class of NTM known as slow-growing, eight patients were infected with rapidly growing NTM, while three were positive for both types.

Those infected with slow-growing NTM were generally older (range of 6.4 to 41.6 years) than those infected with the rapid-growing types (3.1 to 21.5 years), but that difference did not reach statistical significance. However, the age at CF diagnosis was significantly lower in the slow-growing NTM group compared to the rapid-growing NTM group.

When lung function was assessed in the two groups, researchers found that lung function as measured by predicted expiratory flow was significantly higher before NTM infection, regardless of the type of NTM.

Regarding treatment patterns, the team found that significantly more patients infected with slow-growing NTM had received penicillin/beta-lactamase and rifampin following infection compared to before infection.

“An earlier CF diagnosis was associated with a higher isolation of slow-growing NTM and greater antimicrobial use after infection,” the researchers wrote, adding that “NTM acquisition is associated with a worsening of [lung function]. Thus, both the early diagnosis and treatment of an NTM infection in patients with CF may positively impact lung function.”

The team believes that “increased awareness by clinicians on different NTM subtypes and more universal treatment plan for NTM infection in the CF population may positively impact patient management and outcomes.”

Original article here.

Triclosan, often maligned, may have a good side — treating cystic fibrosis infections

By Chris Waters

Maybe you’ve had the experience of wading in a stream and struggling to keep your balance on the slick rocks, or forgetting to brush your teeth in the morning and feeling a slimy coating in your mouth. These are examples of bacterial biofilms that are found anywhere a surface is exposed to bacteria in a moist environment.

Besides leading to falls in streams or creating unhealthy teeth, biofilms can cause large problems when they infect people. Biofilms, multicellular communities of bacteria that can grow on a surface encased in their own self-produced matrix of slime, can block immune cells from engulfing and killing the bacteria or prevent antibodies from binding to their surface.

On top of this, bacteria in a biofilm resist being killed by antibiotics due to the sticky nature of the matrix and activation of inherent resistant mechanisms, such as slow-growing cells or the ability to pump antibiotics out of the cell.

Biofilms are one of the primary growth modes of bacteria, but all antibiotics currently used clinically were developed against free-swimming planktonic bacteria. This is why they do not work well against biofilms.

My laboratory studies how and why bacteria make biofilms, and we develop new therapeutics to target them. Because antibiotic resistance is the most problematic aspect of biofilms during infections, we set out to identify novel molecules that could enhance antibiotic activity against these communities.

We discovered that an antimicrobial that has recently obtained a bad reputation for overuse in many household products could be the secret sauce to kill biofilms.

The hunt for antibiotic superchargers

To find such compounds, we developed an assay to grow plates of 384 tiny biofilms of the bacterium Pseudomonas aeruginosa. We did this to screen for molecules that enhance killing by the antibiotic tobramycin. We chose this bacterium and this antibiotic as our test subjects because they are commonly associated with cystic fibrosis lung infections and treatment.

People with cystic fibrosis (CF) are at particular risk from biofilm-based infections. These infections often become chronic in the lungs of cystic fibrosis patients and are often never cleared, even with aggressive antibiotic therapy.

After we screened 6,080 small molecules in the presence of tobramycin, we found multiple compounds that showed the antibiotic enhancement activity we were searching for. Of particular interest was the antimicrobial triclosan because it has been widely used in household products like toothpaste, soaps and hand sanitizers for decades, indicating that it had potential to be safely used in CF patients. Triclosan has also garnered a bad reputation due to its overuse, and states like Minnesota have banned it from these products. The Food and Drug Administration banned its use from hand soaps in September 2016. This ruling was not based on safety concerns, but rather because the companies that made these products did not demonstrate higher microbial killing when triclosan was added, compared to the base products alone.

Another fact that piqued our interest is that P. aeruginosa is resistant to triclosan. Indeed, treatment with either tobramycin or triclosan alone had very little activity against P. aeruginosa biofilms, but we found that the combination was 100 times more active, killing over 99 percent of the bacteria.

We further studied this combination and found that it worked against P. aeruginosa and other bacterial species that had been isolated from the lungs of CF patients. The combination also significantly enhanced the speed of killing so that at two hours of treatment, virtually all of the biofilm is eradicated.

Our efforts are now focused on pre-clinical development of the tobramycin-triclosan combination. For CF, we envision patients will inhale these antimicrobials as a combination therapy, but it could also be used for other applications such as diabetic non-healing wounds.

Although questions about the safety of triclosan have emerged in the mainstream media, there are actually dozens of studies, including in humans, concluding that it is well tolerated, summarized in this extensive EU report from 2009. My laboratory completely agrees that triclosan has been significantly overused, and it should be reserved to combat life-threatening infections.

The next steps for development are to initiate safety, efficacy and pharmacological studies. And thus far, our own studies indicate that triclosan is well tolerated when directly administered to the lungs. We hope that in the near future we will have enough data to initiate clinical trials with the FDA to test the activity of this combination in people afflicted with biofilm-based infections.

We think our approach of enhancing biofilm activity with the addition of novel compounds will increase the usefulness of currently used antibiotics. Learning about how these compounds work will also shed light on how bacterial biofilms resist antibiotic therapy.

Original article here.

Anaerobic bacteria cultured from CF airways correlate to milder disease-a multisite study

Anaerobic and aerobic bacteria were quantitated in respiratory samples across three cystic fibrosis (CF) centres using extended culture methods. Subjects, ages 1–69 years, who were clinically stable provided sputum (n=200) or bronchoalveolar lavage (n=55). Eighteen anaerobic and 39 aerobic genera were cultured from 59% and 95% of samples, respectively; 16/57 genera had a ≥5% prevalence across centres. Analyses of microbial communities using co-occurrence networks in sputum samples showed groupings of oral, including anaerobic, bacteria whereas typical CF pathogens formed distinct entities. Pseudomonas was associated with worse nutrition and F508del genotype, whereas anaerobe prevalence was positively associated with pancreatic sufficiency, better nutrition and better lung function. A higher ratio of total anaerobe/total aerobe colony forming units was associated with pancreatic sufficiency and better nutrition. Subjects grouped by factor analysis who had relative dominance of anaerobes over aerobes had milder disease compared to a Pseudomonas-dominated group with similar proportions of subjects being homozygous for F508del. In summary, anaerobic bacteria occurred at an early age. In sputum producing subjects anaerobic bacteria were associated with milder disease suggesting that targeted eradication of anaerobes may not be warranted in sputum producing CF subjects.

Full article here.

Omega-3 Compound Reduces Inflammation in Cystic Fibrosis Patients in New Pilot Study

By Jennifer Prince

A marine omega-3 compound comprising a docosahexaenoic acid (DHA) sn1-monoacylglyceride (MAG-DHA) may act as an anti-inflammatory for subjects with cystic fibrosis, according to a new pilot study1 published in the journal Marine Drugs. In the study, MaxSimil (Neptune Wellness Solutions; Laval, QC, Canada) increased omega-3 red blood cell levels, helped moderate the ratio of arachidonic acid (AA) to docosahexaenoic acid, and reduced key inflammatory biomarkers in subjects with cystic fibrosis. Continue reading Omega-3 Compound Reduces Inflammation in Cystic Fibrosis Patients in New Pilot Study

Vertex Pharmaceuticals opens expanded San Diego research center with focus on cystic fibrosis

By Bradley J. Fikes

Vertex Pharmaceuticals opened its new San Diego research center Monday, starting a new chapter in a decades-long quest to not only treat but cure cystic fibrosis.

In 18 years, three drugs for the lung-ravaging disease have emerged from Vertex’s San Diego center and more are in the pipeline.

The first, Kalydeco, was approved in 2012. It is the first drug that treats the underlying cause of the disease. The second, Orkambi, was approved three years later. And the third, Symdeko, was approved in February.

These drugs can benefit about half of all patients with the incurable disease. In the next several years, Boston-based Vertex hopes its drugs can help nearly all patients live longer, healthier lives.

Cystic fibrosis is caused by a genetic defect that allows a buildup of thick mucus in the lungs, and other internal organs. This mucus clogs airways and promotes the growth of bacteria. The average lifespan of patients is 37 years, up from 20 years in 1980. Treatments include antibiotics to fight lung infections and mucus-thinning drugs.

The new 170,000 square-foot building on Torrey Pines Mesa more than doubles the company’s space. The center includes cell culturing equipment to grow lung cells from patients, to be used for drug screening. A 4,000 square-foot incubator suite will serve outside collaborators.

Asides from cystic fibrosis, the staff will work on other serious diseases.

Among the speakers Monday morning was a veteran in the fight against cystic fibrosis: Jennifer Ferguson, who has two children with the disease, Ashton and Lola. Both her children are taking Vertex drugs, and both were present with her at the event.

With these drugs and the promise of better therapies ahead, she says Ashton and Lola have a good chance of growing up and leading their own lives. She urged all Vertex employees to think of themselves as part of a team to cure the disease.

Ferguson, of San Diego, found out about the work from the Cystic Fibrosis Foundation. The foundation had invested $30 million in startup Aurora Biosciences to find therapies.

In 2001, Vertex purchased Aurora for $592 million in stock, the same year Ashton was diagnosed. The research went on under Vertex, and Ferguson became quite familiar with the research team.

“The Cystic Fibrosis Foundation asked me to come speak, to show them what it’s like to have a little child with CF,” she said. “So I came here about 17 years ago with him as a 6-month-old.”

At that time, many cystic fibrosis patients never reached adulthood.

“I had a hard time keeping it together,” Ferguson told the audience of that long-ago visit.

“But I looked in the staff’s faces — and some of you are still here — and I thought, I’m going to put my faith and trust in your hands, in your brains. And I was able to let go of my worry, because you were on the case.”

Ferguson started visiting every few years to check on what progress was being made, first with Ashton, and later including Lola. She also raises money for the Cystic Fibrosis Foundation.

Both her children have shown improvement since starting the Vertex drugs, Ferguson said. But they still need to go through a daily regimen of clearing out their lungs.

From medications, the research frontier has advanced to investigations into a cure. That means fixing the genetic defect, which can come in several variations, inside living patients.

That cure might come from the hot new gene editing technology called CRISR. In 2015, Vertex allied with startup CRISPR Therapeutics to develop curative therapies.

This post was originally published on The San Diego Union-Tribune

Jerry Cahill’s CF Podcast: Stem Cell Research with Dr. Hans-Willem Snoeck

In this feature of The Path Forward with CF series, Dr. Hans-Willem Snoeck, Professor of Medicine (Microbiology and Immunology) at CUMC, sits down to discuss stem cell research as it relates to CF.

Because lung cells regenerate and repair themselves regularly, researchers believe that – some day – stem cell technology could be a one-time therapy to cure cystic fibrosis. Research is ongoing, but in the meantime, scientists can currently use human pluripotent stem cells to create lung organoids (tiny, 3-D structures that mimic features of a full-sized lung), introduce various mutations, and apply technologies to learn more about those mutations’ characteristics.

This video was originally published on JerryCahill.com

Vertex Employees Donate $1M to CF and Other Communities via Matching Gift Program

By Carolina Henriques

Vertex Pharmaceuticals employees have raised more million $1 million  using  the Vertex Foundation‘s matching gift program in a show of commitment to causes that include the cystic fibrosis (CF) community, a company press release states.

The dollar-for-dollar matching gift program is being run through the nonprofit Vertex Foundation, established by the company in November 2017 as part of it’s charitable giving goal of donating $500 million to qualified nonprofits and other causes worldwide over 10 years.

To date, more than 500 Vertex employees have used the program to support 753 charities around the globe working to advance work in areas that include healthcare, human services, education, and disaster relief.

Vertex’s charitable commitment has four primary goals: supporting CF patients and caregivers worldwide, including enabling access to Vertex’s medicines; helping underserved students and young women with STEAM (science, technology, engineering, arts and math) education; supporting young doctors and scientists; and strengthening and fostering innovation in local communities through health and wellness programs.

“Giving back is in our DNA at Vertex, and our employees have a long history of going the extra mile to improve the lives of patients, students and their neighbors,” Jeffrey Leiden, president, chairman and chief executive officer of Vertex, said in the release. “I’m proud that The Vertex Foundation is able to help extend the impact of our employees’ giving and look forward to seeing the reach of these investments in the causes they care about most.”

Also as part of its 10-year commitment, Vertex awarded $400,000 in scholarships to eligible CF patients and their family members in May as part of its second “All in for CF” scholarship program. In total, 80 scholarships worth $5,000 each were awarded for the upcoming academic year.

Vertex, which specializes in cystic fibrosis, has three approved CF therapies: Kalydeco (ivacaftor), Orkambi (lumacaftor/ivacaftor), and Symdeko (tezacaftor/ivacaftor).

The company is also testing potential triple combination treatments for CF.

For the rest of this article, click here.

Cystic Fibrosis Disease Severity Linked to Immune Overreaction to Fungus, Study Reports

By Ana Pena

Disease severity in cystic fibrosis (CF) may be associated with an overreaction of the immune system to the fungus Aspergillus fumigatus, particularly due to a type of white blood cell called a phagocyte — which ingests and kills invading organisms — a study suggests.

U.K. researchers found that phagocytes from CF patients release higher amounts of harmful reactive oxygen species in response to Aspergillus fumigatus, a common cause of lung infection in these patients.

The study, “Aspergillus-induced superoxide production by cystic fibrosis phagocytes is associated with disease severity,” was published in the journal ERC Open Research.

Recent studies have supported the idea that the widespread environmental fungus Aspergillus fumigatus may play a critical role in CF lung disease.

Up to 58% of CF patients are colonized with this fungus, and an estimated 47.7% of adult patients are affected by either allergic reactions or infection caused by the fungus.

Persistent infections with A. fumigatus are also known to be adversely correlated with lung function and hospitalization in CF patients.

Researchers hypothesized that the anti-fungal defense mechanism in CF patients might be altered and have an impact on the progression of lung disease.

To investigate this hypothesis, the team compared the immune response of phagocytes from CF patients with those of healthy individuals used as controls, and tried to correlate them to clinical metrics of disease severity.

For original article please visit CF News Today.

Ex Vivo Lung Perfusion for Transplant

Cystic Fibrosis Podcast 186:
In the latest edition of The Path Forward with Cystic Fibrosis, Dr. Frank D’Ovidio – the Surgical Director of the Lung Transplant Project and Director of the Ex Vivo Lung Perfusion Program at CUMC – explains exactly what the Ex Vivo program is and what its end goals are.
Because so many donor lungs are damaged at the time of death, only 20-30% of donated lungs are usable for transplantation. The ex vivo lung perfusion (EVLP) is a process of evaluating and preparing donor lungs outside the body prior to transplant surgery. In EVLP, the lungs are warmed to normal body temperature, flushed of donor blood, inflammatory cells and potentially harmful biologic factors, and treated with antibiotics and anti-inflammatory agents.
Eventually, as this process is perfected, it could expand the available donor pool by restoring and repairing donor lungs that have sustained damage and eventually create a sort of ‘ICU for organs.’

This video podcast was made possible through an unrestricted educational grant from Columbia University Medial Center and the Lung Transplant Project.