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Multistrain probiotics may reduce chemotherapy-induced diarrhoea

Pearl Toh
05 Nov 2018
Professor Atul Sharma

Taking a high daily dose multi-strain probiotic may help reduce incidence of mild-to-moderate chemotherapy-induced diarrhoea (CID), a side effect commonly experienced by cancer patients, suggests a randomized study presented at ESMO 2018.

“CID is an under-reported, unpleasant, and sometimes a serious side-effect of chemotherapy,” said Professor Atul Sharma of All India Institute of Medical Sciences in New Delhi, India, who explained that CID occurred because “chemotherapy changes the composition of the native gut microflora.”

The phase II/III, double-blind, single-centre study enrolled 291 cancer patients (mean age 46 years, ~80 percent men) who experienced CID while under treatment with fluoropyrimidines and/or irinotecan-based chemotherapy. They were randomized 1:1 to receive probiotics (900 billion colony forming unit comprising four lactobacillus strains, three bifidobacteria strains, and one strain of Streptococcus thermophilus in sachet form, twice daily) or corn starch as placebo, from 2 weeks before chemotherapy to two weeks after the third cycle of chemotherapy. [ESMO 2018, abstract 1682O_PR]

For diarrhoea of any grade, incidence was significantly lower in the probiotic group than the placebo group (n=199 vs 220; p=0.019). Similarly, incidence of mild-to-moderate diarrhoea (grade I-II) was also significantly reduced with probiotics compared with placebo (89.9 percent vs 95 percent; p=0.016).

However, numerically higher incidence was seen with probiotics vs placebo for severe diarrhoea of grade III (8.0 percent vs 4.1 percent; p=0.088) and grade IV (2.0 percent vs none; p=0.05), which according to Sharma, could be limited by the lower incidence of severe diarrhoea than that reported in previous studies.

“The results indicate a limited role of this high potency multistrain probiotic in reducing incidence of severe CID … [but] probiotics were able to significantly reduce all grades of diarrhoea episodes,” concluded Sharma.

“There was no increased incidence of infectious complications in study arm … indicating that probiotics are safe,” he added.   

Other endpoints such as the proportion of patients requiring rescue medication, parenteral nutrition, or intravenous fluids was similar between the two groups. There was also no significant between-group difference in body weight throughout the study.

Probiotics for CID prevention?

Nonetheless, invited discussant Professor Jørn Herrstedt from Zealand University Hospital, Roskilde, Denmark, suggested that more well-designed studies are needed to confirm the findings.

“The use of probiotics for the prevention of diarrhoea is a controversial issue: on one hand, they may create a protective barrier reducing diarrhoea and abdominal discomfort; on the other hand, they could put the immunocompromised patient at a higher risk of severe infections,” Herrstedt added, citing statements from the ESMO guidelines. [Ann Oncol 2018;29:iv126-iv242]

“[While] there is level III evidence for the use of probiotics in prevention of radiotherapy-induced diarrhoea, the results concerning treatment are inconclusive,” he noted on observations from previous studies and meta-analyses. “There is [also] no significant evidence of an effect of probiotics in prevention or treatment of CID.”

“Currently unknown is whether probiotics used in this RCT positively or negatively influence the immune system, and with more patients being treated with immunotherapy, before embarking on large-scale usage of probiotics to reduce CID, their effect on the immune system should be investigated,” commented Professor John Haanen of the Netherlands Cancer Institute, Amsterdam, in ESMO press release.

 

 

 

 

 

 

 

 

 

 

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Most Read Articles
04 Oct 2020
Obesity does not appear to be strongly correlated with an increased risk for febrile neutropaenia during levofloxacin prophylaxis in patients with haematological malignancies receiving intermediate-risk myelosuppressive chemotherapy, suggests a study.
Roshini Claire Anthony, 4 days ago

Initiation or switch to the single-tablet regimen of bictegravir/emtricitabine/tenofovir alafenamide (TAF) led to low HIV-1 RNA viral load in people living with HIV (PLHIV), according to the BICSTaR study presented at HIV Glasgow 2020.

09 Nov 2020
Use of corticosteroids appears to be an effective treatment for paediatric drug reaction with eosinophilia and systemic symptoms (DRESS), suggest the results of a recent study. In severe cases, corticosteroids used in conjunction with intravenous immunoglobulin result in fast clinical improvement.
Stephen Padilla, 10 Nov 2020
Patients with chronic obstructive pulmonary disease (COPD) seem to benefit from using chlorhexidine oral rinses twice daily as shown by the reduction in oral and sputum microbiota alpha diversity and by clinically significant improvements in COPD symptoms, according to a study presented at ID Week 2020.