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A big, successful trial of probiotics
- TheBeardKing 9y agoThe study was done on newborns just starting breastfeeding, but doesn't say whether only vaginal births or if C-sections were included.
- adrice727 9y ago99.8% and 99.7% of the births were vaginal for those receiving the placebo and the probiotics, respectively. https://www.nature.com/articles/nature23480.epdf https://www.nature.com/articles/nature23480.epdf
- rubidium 9y agoHere's the nature article (paywall): http://www.nature.com/nature/journal/vaop/ncurrent/full/nature23480.html http://www.nature.com/nature/journal/vaop/ncurrent/full/natu... "The special mixture included a probiotic called Lactobacillus plantarum ATCC-202195 combined with fructo-oligosaccharide (FOS), an oral synbiotic preparation developed by Dr. Panigrahi." (from https://medicalxpress.com/news/2017-08-probiotics-sepsis-infants.html https://medicalxpress.com/news/2017-08-probiotics-sepsis-inf...) Decrease in other infections (respiratory and nasal) is particularly interesting to see. Now I want a HN MD to weigh in.
- avip 9y agoProblem solved http://sci-hub.io/10.1038/nature23480 http://sci-hub.io/10.1038/nature23480 Spasiba Russia.
- dpatrick86 9y agoKazakhstan. :)
- microcolonel 9y agoI knew Страничка looked funny, that explains a lot.
- rcdmd 9y agoNot a GI specialist here, but I've read plenty of randomized controlled trials. The one-liner here might be "high quality[1] study shows substantial reduction in infant infections in rural India[2]." The biological mechanism makes sense, and as discussed in the article could be more than just good bacteria fighting off bad bacteria. A cynic may say the immunomodulation stuff is kind of hand-wavy and not being a GI specialist, pediatrician or immunologist myself I don't know. That would be an important point because all infections were reduced (not just GI infections), which may point to confounding variables. More on that later. [2] As far as how the study applies to most of Europe and the US where infant mortality is 10x less, hard to say. The number of infants needed to treat to prevent a single infection was 27 which is low assuming these drugs are cheap and without side effects. Immediate side effects are unlikely given the low and comparable drop out rates among control and treatment groups. However, long-term effects are unknown given the timeframe of the study. Forming a recommendation for countries with more rigorous pasteurization/food preparation/etc, perhaps more access to care and well-child checkups, and much lower infant mortality in general isn't particularly easy here. I'm not up to date on other studies with probiotics. Again, not my specialty. [1] The study quality looks sound and exclusions were reasonable, the control (placebo) and treatment groups matched up well in many ways and were sizable. There wasn't very much in the way of dropouts. The study looked at too small a population to determine differences in infant deaths, if there is one at all.
- hanklazard 9y agoPediatric MD PhD. These are exciting results. Sepsis among neonates is a major concern, even in the developed world. Babies new to the world have very weak immune systems, particularly with regard to antibody response which is initially almost entirely composed of waning amounts of transplacental IgA. This paper points out the the developing world has even higher rates of infant mortality from bacterial sepsis. So this is a big problem and impactful solutions have been tough to come by. This is a large double-blind placebo controlled trial. They gave eligible babies 7 consecutive daily doses of either placebo or the study agent. Table 1 shows that both study groups are very similar, so we should not be too concerned with confounding variables. Table 2 shows the striking data re: sepsis death rates, with this "synbiotic" (probiotic bacteria + bacterial food) reducing death from sepsis by almost half(!). Table 3 looks at all causes of death and importantly, significant differences in other causes of death were not observed between the two groups--it wouldn't be all that helpful if this synbiotic group seemed to get some other serious problem as a side effect. It is a pretty straight-forward study and no major flaws in their methods or conclusions jump out at me. While exciting overall, the authors point out some important points at the end. I think the most interesting is that they used this particular species of lactobacillus after studying babies in India about 20 years ago and finding differences in the rates of colonization with this and other probiotic species. In other words, they didn't just throw any sort of "good bacteria" at these babies--they had strong evidence to show that it actually colonized them and therefore could , in theory, have an effect on rates of sepsis. If they had used lactobacillus GG (one of the other species that they found had low rates of colonization), it would stand to reason that they wouldn't have gotten such an impressive effect or maybe none at all. Then the media would say, "probiotics don't save babies from sepsis." Basically I'm just applauding their careful selection of this bacterial species. One final important note is that this result should not be generalized to other populations without future studies showing similar effects. The gut microbiome is influenced by geography and other environmental factors and interacts heavily with out immune systems, large parts of which vary by genetic background. To put it another way, just because this bacterial species works well in rural India does not mean it will work well in Peru or anywhere else.
- geomark 9y agoOutstanding comment. Thank you.
- colordrops 9y agoAll the products containing Lactobacillus plantarum may see a boost in sales.
- polskibus 9y agoare there any though? From the article, it seems that they had to cultivate the colonies themselves.
- adrice727 9y agoYes, you can find it in some probiotic supplements. https://www.gardenoflife.com/content/product/dr-formulated-probiotics-once-daily/ https://www.gardenoflife.com/content/product/dr-formulated-p...
- robrenaud 9y agoMany brewers actually use lacto P to sour beer quickly. It's cheap and widely available.
- skore 9y agoVSL#3 has them (amongst others). Not sure whether it's the "ATCC strain 202195", though. https://vsl3.com/about-vsl/ https://vsl3.com/about-vsl/ Streptococcus thermophilus Bifidobacterium breve Bifidobacterium longum Bifidobacterium infantis Lactobacillus acidophilus Lactobacillus plantarum Lactobacillus paracasei Lactobacillus delbrueckii subsp. bulgaricus
- tatersolid 9y agoHaving had two major surgeries due to "unkillable" intestinal infection, I can advocate for the efficacy of VSL#3. My GI actually prescribed me a high-dose version post-op, and two years later i can say it has been life-changing. Other common "store shelf" probiotics are not the same for whatever reason (supply-chain refrigeration and cost might explain that somewhat).
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- RcouF1uZ4gsC 9y agoThe 9% placebo and even the 5% treatment sepsis rate seems very high. According to http://emedicine.medscape.com/article/978352-overview#a6 http://emedicine.medscape.com/article/978352-overview#a6 the US rate of neonatal sepsis is around 2/1000 live births so around 0.2%. Given this, I wonder how applicable these results would be to neonates in the US.
- santoshalper 9y agoIt may be that because of diet or other factors, this just wouldn't be as useful in the US.
- revelation 9y agoNo, it suggests something in the US is vastly more effective in preventing sepsis than this probiotic concoction.
- QAPereo 9y agoAccess to clean water...
- btilly 9y agoThe US generally has clean water. The third world, and India in particular, frequently do not. That said, the other immune boosts are interesting here. And what would be doubly interesting is to figure out probiotics that prevent allergies. We've known for years that a child who is exposed to real illnesses in a dirty environment may die from that, but won't generally go on to develop asthma. In the developed world we have a lot of health problems coming from the immune system looking so hard for threats that it starts attacking your own body. There is very, very good reason to believe that the right probiotics would solve this problem. However discovering what those probiotics are is not so simple...
- emilp89 9y agoHygiene hypothesis hasn't been proven yet.
- icelancer 9y agoThe trial looks to be exceptionally rigorous and the sample size is very large. This is exciting science to say the least!
- Ovah 9y agoI find the word probiotic to be inherently problematic. It includes any and all microorganisms that have a single positive health benefit, whether or not they're detrimental in other regards. That if a bacteria were to penerate gut epithelium (very bad), it would still be a probiotic if it reduced constupation. Even if the research supporting the health benefits of a supplemental bacteria is sound, a single study always has a restricted scope. It's saddening that 'probiotics' have found their way to products such as baby formula, while there is pretty much no regulation governing their sales and use (at least in Europe).
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- macawfish 9y agoIn my opinion, the word antibiotic is even more problematic. In a recent survey, 13% of practitioners admitted to having used sedatives or antibiotics as placebos: https://www.sciencedaily.com/releases/2008/10/081023195216.htm https://www.sciencedaily.com/releases/2008/10/081023195216.h... To me, antibiotics are an example of dangerous superstition rearing its nasty head right there smack in the middle an institution that prides itself as rational and superior. I think pre-med and med school students should be required to take courses in chaos theory and ecology, as well as open minded primers on alternative and preventative medicines, not so much to advocate or practice them, but so they can have a better sense of medicine as an artform.
- bitwize 9y agoOr maybe just have Jeff Goldblum tell them that they're so preoccupied with whether they could that they didn't stop to think about whether they should. And that life finds a way.
- macawfish 9y agoYeah they should be required to watch Jurassic Park (the original ONLY though the new one is garbage propaganda)
- manmal 9y agoIf you want to try L. Plantarum yourself, get the strain 299v if you can. There's one by Jarrow (not affiliated, just made good experiences with it). AFAIK, most other strains of L. Plantarum produce D-lactic acid, while 299v produces L-lactic acid (I've even seen a paper where they used 299v to treat acidosis). D-lactic acid can be hard to metabolize and can lead to acidosis. Probiotics-induced acidosis is a thing - not good, most people with this end up in hospital and need infusions and some kind of intervention for the long term. Acidophilus generally produces D-lactic acid, while e.g. L casei shirota (Yakult) does not. It pays to take a hard look at the strains in a probiotic.
- ValentineC 9y agoJust did a quick online search, and it seems that D-lactic acid might be responsible for Chronic Fatigue Syndrome too. This is something I'm going to read up more in the next few days. Are there any good resources on this?
- Havoc 9y agoMy issue isn't on the faith in probiotics side...the problem is which ones do I buy. It's near impossible to know you're getting the good stuff so to speak.
- manmal 9y agoIt really depends on what you need. I would be careful around soil based species, and avoid D-lactic acid producers (which eliminates a whole lot of probiotics), but apart from that you can just get what you need. E.g. if you have a problem with histamine intolerance you could go for strains that eat/reduce histamine. If you want better mood, you could try L Plantarum 299v or Bifidobacterium Longum or L casei shirota.
- throwawy81717 9y agoIf you want to lose weight, Christensenella minuta is worth examining. The research[1,2] is preliminary, and I wouldn't trust any commercial preparations without validation, but it is compelling. 1. http://www.ctl.cornell.edu/events/celebration15/posters/Waters.pdf http://www.ctl.cornell.edu/events/celebration15/posters/Wate... 2. http://www.cell.com/abstract/S0092-8674(14)01241-0 http://www.cell.com/abstract/S0092-8674(14)01241-0
- rednerrus 9y agoIs there somewhere this is commercially available?
- manmal 9y agoI'm intrigued by what mechanism this happens. Would be great if it changed the "fat set point" in the hypothalamus by reducing inflammation there (https://news.ycombinator.com/item?id=14932541 https://news.ycombinator.com/item?id=14932541). Last time I tried a strain from the clostridia family (butyricum) I had an adverse reaction, so I might not be able to use this. But, everybody's different.
- Havoc 9y agoMy point was rather that how do I know the bacteria aren't 100% dead? Thanks for the details on strains though. :)
- csr12928834 9y agoInteresting. I was skeptical of probiotics but the evidence seems to be suggesting otherwise. This kind of builds on meta-analyses showing that probiotic use cuts rates of antibiotic-associated C. difficile infection. Young children have very unstable microflora systems, so the results make sense from that perspective also.
- nikolay 9y agoI've been using General Biotics 115-strain pre- and probiotic product called Equilibrium [1]. You can find more info in the Science section [2]. [1]: https://www.generalbiotics.com/orders/new/ https://www.generalbiotics.com/orders/new/ [2]: https://www.generalbiotics.com/science/ https://www.generalbiotics.com/science/
- skypather 9y agoBut 115-strain is not the strain mentioned in this study, isn't it? So your point of bringing up this product is??!! I meant, isn't one major point of this study is "not all probiotics are the same and finally someone found one is actually very helpful to new born babies"?
- culiuniversal 9y agoThey initially planned to include 8000 babies, but stopped early. With only a week of treatment they already found a significant decrease in sepsis rates. They stopped because they thought it'd be highly unethical to deprive the other babies of a life-saving treatment. This is a heartwarming example of when humanity and science conflict, but I'm glad humanity won
- dflock 9y agoThat's standard procedure for clinical trials.
- markdown 9y agoDoes yoghurt have the good stuff?
- Mz 9y agoAside from preventing sepsis, it also reduced the risk of infections by both the major groups of bacteria: the Gram-positives, by 82 percent; and the Gram-negatives, which are harder to treat with antibiotics, by 75 percent. It even reduced the risk of pneumonia and other infections of the airways by 34 percent. That was “completely unexpected,” says Panigrahi, and it’s the result he’s especially excited about. It suggests that the synbiotic isn’t just acting within the gut, but also giving the infants’ immune systems a body-wide boost. I don't know why they are so surprised. Given that some sources say the gut constitutes up to 70 percent of the immune system, it should be fairly obvious that improving gut health will have such effects. Furthermore, you can infer a fairly direct relationship between gut health and lung health based on what happens in the body at altitude: You start urinating more to compensate for the thin air reducing your ability to exhale wastes. The body starts clearing them out of the blood by shunting them to the kidneys.
- azinman2 9y agoBut a single strain of bacteria can do that? I would say that’s pretty surprising and if so a major discovery. I don’t currently have any such magic pills that I’m taking...
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- mattparlane 9y agoWhy the use of a placebo in a trial involving babies? Surely they would be immune to any placebo effect?
- Sophistifunk 9y agoThe researchers and their parents won't be though.
- brianpan 9y agoIt's a double-blind study. The people conducting the study should not know who is in which group. They should be randomly administering either a probiotic or an identical looking placebo.
- quickthrower2 9y agoGotta be done: https://xkcd.com/1471/ https://xkcd.com/1471/
- amai 9y agoI can recommend https://en.wikipedia.org/wiki/Lactobacillus_reuteri https://en.wikipedia.org/wiki/Lactobacillus_reuteri "Similar results have been found in adults; those consuming L. reuteri daily end up falling ill 50% less often, as measured by their decrease use of sick leave."