A Cure for Dementia? What hope, what unexpected hope, there may be in antibiotic drugs! We knew that when we started this blog. We did it because we were scared of resistant bacteria. But we never anticipated this benefit: antibiotic drugs may protect us from dementia. So might antiviral drugs. So might vaccines too. Andrew Gregory of the Guardian has been following the work of Dr Ben Underwood. In a nutshell

…….One unexpected finding was an association between antibiotics, antivirals and vaccines and a reduced risk of dementia. The finding supports the hypothesis that some cases of the disease may be triggered by viral or bacterial infections. [1]

Of course, there are many questions to be answered. But for us the point is how precious these drugs are, how important it is not to waste them. Which leads us to:

War starts spike in microbial resistance Armed conflicts produce vast surges in traumatic casualties, in dirt and in squalor. All of which necessitate an understandable increase in prescription of antibiotics. Which in turn leads to rising levels of resistance. As Abdujalil Abdurasulov adduces for the BBC [2]

………war appears to have accelerated the spread of multi-resistant pathogens in Ukraine.Clinics treating war injuries have registered a sharp increase of AMR cases. More than 80% of all patients admitted to Feofaniya Hospital have infections caused by microbes which are resistant to antibiotics, according to deputy chief physician Dr Andriy Strokan.

Once started, these resistant strains of bacteria will not go away. They will spread and multiply. How ironic if many of us end up as casualties of a war between third parties, with whom we have no direct connection. Which leads us to:

War For all? We are beginning to suspect that the tendency to divide into hostile camps , who quickly resort to violence, may be a major cognitive defect in the brains of Homo sapiens. Here is our exhibit A: Recently the followers of the popular Association Football Team Manchester United were involved in violent fighting with the followers of the popular Association Football Team Glasgow Rangers. Why? What economic, intellectual or spiritual gains to they hope to make from such an expenditure of time and effort.?(not to mention the legal penalties which may accrue) What on earth divides them so deeply? Yet if people can fight over such infinitesimal differences as theirs, what hope for any of us? One thing is clear to this blog: there will be a lot more antibiotic resistance. Natural Selection does not forgive species that indulge in maladaptive behaviour. What is waiting in the wings to replace us?

[1]https://www.theguardian.com/society/2025/jan/21/antibiotics-antivirals-and-vaccines-could-help-tackle-dementia-study-suggests?CMP=Share_iOSApp_Other

[2]https://www.bbc.co.uk/news/articles/c20k5wrgz13o

[3]https://www.bbc.co.uk/news/articles/cy7gnd72xe8o#:~:text=Trouble%20before%20and%20during%20Manchester%20United%27s%20Europa%

#antibiotic resistance #medicine #health #ukraine #russia #football #manchester united #rangers

Magnesium: that abundant but essentially humble metal that finds so many uses: tin cans, consumer electronics, aviation, Epsom salts, transport…..and many more. But could it be the clue to an exciting new development in the study of antibiotic resistance? Tessa Koumoundouros of Science Alert seems to think so.

A team At UC San Diego think that magnesium is the “Achilles heel” of antibiotic resistance in the bacterium Bacillus subtilis. It’s classic Darwinian Natural Selection in action. Put them in an environment with lots of antibiotic, and, hey presto, one particular strain evolves resistance. They get a competitive advantage and start to out-breed their pals without the resistant gene. But: there is no free lunch in Nature. To get an advantage in one area you have to pay a price somewhere else. Because the non resistant, more generally adapted strain are much better at coping when the magnesium levels in the environment drop. As Tessa explains:

Depriving environments of magnesium could counter the bacteria’s ability to thrive. And because unmutated strains don’t share the same flaw, reducing the key nutrient shouldn’t adversely impact bacteria needed for a healthy microbiome.

Her article contains a really clear explanation, and some good images. Great journalism.

It’s funny how research in one area suddenly gets a boost from something slightly unexpected and left-field. If we are to overcome antibiotic resistance, yes, new drugs will be needed. But, eventually, resistance will develop to them. We need other techniques too, to work alongside the new drugs. And this idea of nutrient balance seems like a really fruitful one to us.

[1]https://www.sciencealert.com/achilles-heel-of-drug-resistant-bacteria-has-been-found-scientists-say

[2]https://www.science.org/doi/10.1126/sciadv.adq5249

#magnesium #antibiotic resistance #health #medicine #microbiology #natural selection

Oh for those shiny days of the far-off 1960s, when all those brightly coloured plastics were new, and somehow modern. Your model of Thunderbird 2 was made of it. So were the seats in your dad’s new Austin 1100. So were bottles of fabric conditioner, drinking mugs and clothes of nylon. No more fuddy duddy old wood and cotton for us! This was the Space Age, and we even listened to David Bowie’s Space Oddity on a plastic record.

Except there was a catch. All this new plastic which was slowly filling up the world would one day break down into tiny indigestible particles. With no where else to go except into our blood, our brains, our tissues. So far so bad, but it gets worse. LSS started out as antibiotics blog, and this is where we close the circle. Read this: It’s from the admirable Science News website, a cornucopia of knowledge on many subjects

An international research team has investigated how nanoplastic particles deposited in the body affect the effectiveness of antibiotics. The study showed that the plastic particles not only impair the effect of the drugs, but could also promote the development of antibiotic-resistant bacteria.I

So what’s going on? Firstly, can we say how much we liked the simplicity of this study. It used a common antibiotic (tetracycline) and and some common as muck plastics (polyethylene, polypropylene and polystyrene) It looks as if microparticles of these things can bind antibiotics, which leads to both the reduction of effectiveness and the generation of new resistance. But read the paper and judge for yourselves, good readers.

And our thoughts? Well they’re more emotions really. A kind of vague melancholy at how progress in one area slow creeps up and vitiates progress in another. That Rachel Carson was right all along. And that all that glistens isn’t good.

[1]https://www.sciencedaily.com/releases/2024/10/241030150657.htm

#plastic #nanoparticles #antibiotic resistance #pollution #health #medicine

OK, we have spent the past four years urging you to hunt down those pesky little microbes with every antibiotic you can lay your hand on. Now we’re going to tell you microbes are just wonderful. When it comes to saving us from Global Warming that is Read this piece called Microbes against climate catastrophe from Nature Briefings

In a call to action published simultaneously across 14 journals today, microbiologist Raquel Peixoto and colleagues demand that the world “harness the power of microbiology” to safeguard the planet. From the enhancement of carbon sequestration to the cultivation of biofuels, there are a multitude of microbe-based solutions to climate problems, say the authors — but these are not being rolled out effectively at scale. It’s time to cut through the red tape, they argue, and gather a global task force to help test, fund and deploy the best of these microbiome technologies.Nature Microbiology (and 13 other journals) | 5 min read

When we ran this one through the editorial board, we agreed we could not be accused of mixed messaging. Antibiotics are in the medicines file. Carbon capture is in environment. They are two completely separate disconnected entities, like the utterances of certain well-known US politicians and the observable truth. But: are they? After we finished the meeting, and before putting quill to parchment, as t’were, we went for an uneasy walk with our conscience. Up and down the bleak streets of Croydon. Past Fairfield Halls. Something was niggling at the back of our mind. In the Porter for a quick three or four pints. What was it about antibiotics? Round the shopping centre. Something extra about antibiotics. Back past fairfield Halls. People were starting to look Then it hit us! All these excess antibiotics, running off farms and so on may actually be damaging the very microbes which we need to save us. Read this extract of an abstract if you don’t believe us, from the accomplished Professors Yaozong Cui, Yanhong Li Lihao Zhang and Nan Ziao Environmental behaviour and impact of antibiotics [1]

Antibiotics are widely used to treat or prevent human and animal diseases, as well as to promote the growth of animals in livestock breeding and aquaculture. As a type of antibacterial drugs, antibiotics have been widely applied in human/animal disease prevention, disease treatment, animal husbandry and aquaculture, etc. A majority of antibiotics introduced into human/animal cannot be utilized directly, leading to the result that more than 85% antibiotics were discharged into the environment. Once antibiotics enter the ecosystems, they could influence the evolution of the community structure, which according affect the ecological function of aquatic environment. Correspondingly, antibiotic resistant bacteria (ARB) have been found, which is threatening ecological safety and human health. 

Perhaps the best take on this is from the world-weary Professor Peixoto. We need-and urgently- a very deep understanding of how we live and manage the whole microbiological biome. But where do our rulers spend our money?

[1]https://www.atlantis-press.com/proceedings/iceesd-17/25875046

#global warming #climate change #biofuels #carbon capture #microbiology

Old hands on the LSS blog may be forgiven for thinking antibiotic resistance is all about bacteria, and that it all goes in in hospital with lots of medical folk in white coats and humming machines that do funny things with graphs, and all that sort of thing.

Well, it’s about a lot more than that. It isn’t just bacteria that are resistant to our drugs. Down on the farm, there’s a whole class of creatures called Playtyhelminths (aka flatworms) that can do untold damage to sheep, for example. For years their ravages have been controlled by drugs. Now theses pesky creatures are showing strong resistance to these drugs, And to make matters worse, these drugs are getting into nature from the sheep pastures, and starting to wreak havoc there. It’s a lose-lose situation. And we, that is to say humanity, are the losers.[1]

Why is this happening? It’s Natural Selection in action. The flatworms in the sheep guts are animals like any other. Expose them to a threat, (antagonistic drugs) and most will die. But a very few will carry resistant genes, thrown up by random mutation. They and their offspring will survive, and multiply. Mightily. Just like all those bacteria do with the drugs we send against them. The point is resistance is just an evolutionary response. It will happen everywhere at all times. The trick is to stay ahead of it. And the way to do that is to spend a little more on science and research labs. To plan to educate more people with the scientific habit of mind, where we suspend judgement and become open to evidence. And listen a little less to the kind of unreasoning. emotion driven story telling that pollutes so much of the Information Sphere. Some hope.

CREDIT We got this story by watching an episode of the popular BBC television programme Countryfile. [2] Not quite our normal cup of tea, you might think? Well, its amazing how their light, cheerful style gives you an in to some much deeper issues. Worth the odd watch, we say.

[1]https://www.nature.com/articles/s41467-024-45027-2

[2]https://www.bbc.co.uk/programmes/m002398g

#flatworms #sheep #agriculture #platyhelminths #antibiotic resistance

As if the threat from cancer, dementia and heart disease wasn’t enough, the world’s older inhabitants face a new danger. It’s our old friend antibiotic resistance-and it’s growing fast. That’s according to Kat Lay of the Guardian,[1] who has produced a fascinating review of the work of the Global Research on Antimicrobial Resistance Project.[2.3} They looked at data from 204 countries from 1990 to 2021, and have projected their findings forwards into the 2050s.

Young people will suffer from the problem it’s true. But their overall death rate from infections has been falling, partly from the success of things like improved hygiene and vaccination problems. It’s among the elderly that the situation gets bleak. Their death rates from antibiotic resistant organisms have skyrocketed by 80% over the last three decades. The authors estiamte by 2050 this demographic will be suffering 1.3 million deaths per year directly from resistant organism infections. And the resistance will be implicated, at least in part in a further 8.2 million annual deaths. Readers of LSS will observe, wearily, that every one of them will be avoidable.

So, what to say after all these years of blogging? After reporting on the work of so many fine researchers, and thanking so many fine journalists like Kat, and all her colleagues who labour tirelessly to keep this problem on the public eye? The fact that people are more aware of all this than when we started back in ’15 is something. And there have been signs of progress, as we have sometimes noted here. Keep people aware, readers. If you see a journalist who has raised it, try to find a way to thank them. Keep giving money to the charities who are trying to do something about it.[4] And, as with many things-don’t stop hoping

[1]https://www.theguardian.com/global-development/2024/sep/16/health-superbugs-antimicrobial-resistance-amr-39m-deaths-infections-bacteria-gram-study

[2]https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(24)01867-1/fulltext

[3]https://www.tropicalmedicine.ox.ac.uk/gram

[4]https://www.antibioticresearch.org.uk/

#antibiotic resistance #medicine #health #hospital #2050

Just when you thought we were finally getting a handle on antibiotic resistant microbes, Damien Carrington of the Guardian[1] reveals a whole new, and rather surprising new danger. Antibiotic resistant organisms are not only thriving in agriculture, they are being blown across the planet by the winds. Ready to drop into an ecosystem near you. And start to spread their mischief once again.

That at least seems to be the conclusion of the versatile Professor Rodó and his colleagues at the Barcelona Institute for Global Health. Sampling the low air wind patterns (0.97-3.05km) between North China and Japan they found that potentially pathogenic, antibiotic-resistant organisms were blowing up to 2000 km downwind. And landed perfectly capable of reproducing at the other end. To make matters worse, the samples included organisms such as E Coli and Clostridium difficile, no strangers to these pages.

Why are we worried? Well, frankly we didn’t see this coming. Although given the massive misuse of antibiotics in intensive farming, maybe we should have done. And, if this is the situation between advanced countries like China and Japan, what must be happening in less fortunate regions of the world? One thing is clear. Antibiotic resistance joins global warming and mass migration as one of those problems which no country will ever solve on its own. Remeber that next time you hear them banging on in the bar of the Dog and Duck.

[1]https://www.theguardian.com/science/article/2024/sep/09/pathogenic-microbes-carried-vast-distances-by-winds

[2]https://www.pnas.org/doi/10.1073/pnas.2404191121

#weather #antibiotic resistance #farming #china #japan #prevailing wind #global warming