Cancer testing saves lives-and shows why science works

Today we a re going to talk about cancer. In the UK alone it kills 167 000 people annually, which is about 29% of all recorded deaths . Meanwhile about 3.5 million people are trying to live with it on a daily basis. The statistics for your country will be comparable, gentle reader. Nothing would cheer us more than to report some good news. And today we think we can, courtesy oft the far sighted Professor Peter Sasieni and his team at London’s Queen Mary University via the Mail [1] [2]

Professor Sasieni and his team are not pioneering cures directly. Their skill is devising new ways of testing. To detect the terrible disease early, before it can wreak havoc, and unleash the cures when they have the optimal chances of success. The linked article is a good summary of all the wonderful work they are doing. But we have filleted out this tiny quote which will give you some flavour of what they are achieving

Yearly screening under the fast tumour growth scenario led to a higher number of diagnoses than usual care – 370 more cancer signs were detected per year per 100,000 people screened. There were also 49 per cent fewer late-stage diagnoses and 21 per cent fewer deaths within five years than patients receiving usual care.

If that’s not hope we don’t know what is

But there’s a deeper story here. For us, the best working definition of intelligence is how you respond to reality. You may have a lot of money, talk well, and even have a genius IQ. But if you ignore facts, deny them, or distort them, then you are a fool. There’s no mystery about science. It is simply a way of collecting true facts and organising them according to the rules of logic, which is what Professor Sasieni has done. This works globally for things like changes in the climate. It works locally, for things like diseases in the human body such as a diagnosis of cancer To deny truth once is the start of denying it always. With fatal results.

[1]https://www.dailymail.co.uk/health/article-14694059/blood-tests-detect-earliest-signs-cancer-prevent-advanced-stage.html

[2]https://www.qmul.ac.uk/wiph/people/profiles/peter-sasieni.html

#cancer #testing #screening #health #medicine

Is this plastic eating bacterium the ultimate in antibiotic resistance?

Bacteria that mutate to resist the strongest known antibiotics. At this blog, it’s in our DNA, if you will pardon the flippant quip. But-get this-what if the bacterium in question starts eating the walls you are trying to contain it in? Sounds fantastic, like the plot of one of those old 1950s B movies. Read this piece called Hospital Superbug eats Medical Plastic from the admirable Nature Briefings

Pseudomonas aeruginosa — a strain of bacterium that often causes antibiotic-resistant infections in hospitals — can produce an enzyme that can break down medical-grade plastic. Researchers found that the enzyme, dubbed Pap1, can break down a plastic called polycaprolactone that is commonly used in health care because of its biodegradable properties. The ability to break down plastic could explain why these microbes persist in hospital environments, says biomedical scientist and study co-author Ronan McCarthy.Nature | 4 min read
Reference: Cell Reports paper

We’ve put up the Cell Reports posting for you too here[1]in case the clicker above does not get you through

So is this it? The big one? A wave of highly infectious bacteria that not only eats us humans, but gleefully chomps its way through the very defensive systems we use use to contain it? Possibly, yes. But-let’s keep our Alans on, as they used to say in the old Guy Ritchie movies. For there are two good reasons to do so.

First, it’s only eating one type of plastic, so far. There are lots of others which could be deployed for special medical uses which will be less vulnerable.

Secondly, the fact that this plastic is indeed biodegradable, and that something has found a way to do it, offers great hope. Imagine a plastics ecosystem wherein every bottle, every carton, each piece of wrapping is open to attack by this Pap-1 enzyme. Potentially it opens the way to clean beaches, litter- free hedgerows and unblocked rivers and sewers. There is no reason that the genes to make the enzyme could not be spliced into a safer organism than Pseudomonas aeruginosa. It’s an ill wind that blows no one any good, we say.

[1]https://www.cell.com/cell-reports/fulltext/S2211-1247(25)00421-8

#plastics #antibiotics #microbial antibiotic resistance #science #ecology #pollution

Deadly Fungus spreads as globe warms

Rising seas. Flooding rivers. Blankets of uncontrollable wildfires. But the latest risk from global warming is a humble fungus, which could now spread across the globe. We’ve mentioned the danger of antibiotic resistant fungi before here(LSS 21 10 24 et al) But we never thought to tie it to climate change.

Well all that’s just changed. Because according to a new study by Dr Norman van Rhijn of Manchester University, reported here by Alex Croft of the Independent, via Yahoo [1] dangerous strains of the Aspergillus family of fungi are starting to spread . If we carry on burning fossil fuels at the rate we do now, the strain A. fumigatus will probably extend its range by 77% by 2100, pushing up into polar regions such as Alaska. And the trend is worrying experts from many fields.[2] For one thing, fungi have an immense potential to damage drops. But they also pose a clear and present danger to human health, especially in those with weaker immune systems, such as the elderly and children. They may also produce substances such as aflatoxins which may cause liver damage and even cancer[3] It’s hard to get an exact figure which parses the number of deaths caused directly by fungi, and those cases where they become an opportunistic secondary infection. But about 3.5 million a year might not be a bad ball park figure. As the fungi become resistant to antibiotics and fungicides, this figure will grow and grow.

This is a bank holiday weekend in our country. People will be doing bank holiday things. A great many cars will be cleaned, tents put up, boats sailed and drinks drunk. But , we can’t help thinking, wouldn’t it be better to put all the fun on hold for a bit, until problems like this have been finally sorted out?

[1]https://uk.news.yahoo.com/killer-fungus-could-spread-parts-170653452.html#:~:text=Norman%20van%20Rhijn%2C%20the%20Wellcome%20Trust%20research%20fellow,a

[2]https://www.who.int/news/item/25-10-2022-who-releases-first-ever-list-of-health-threatening-fungi

[3]https://www.cancer.gov/about-cancer/causes-prevention/risk/substances/aflatoxins

#global warming #climate change # antibiotic resistance #aspergillus #fungi

Yes, the brain can erase unpleasant memories-but what does that say about who we are?

An old friend once told us about his experiences as a child evacuee during the Second World War. Or rather, he didn’t: because those memories did not exist. Like those of millions of others, his experiences were agonisingly traumatic. And he had blotted them out altogether. News of how the brain achieves this erasure of painful memories comes in this story from the inimitable Nature Briefing called Dopamine hit overwrites memories of fear

In mice, dopamine acts on neurons in a brain region called the basolateral amygdala (BLA) to kick-start fear extinction — the overwriting of fearful memories when danger has passed. Researchers found that this dopamine is produced in a separate part of the brain called the ventral tegmental area. Humans have “the same evolutionarily conserved parts of the brain that regulate these fear responses” as mice, says neuroscientist Larry Zweifel, which hints that neurons in the BLA could be a target for drugs to help to treat fear-related conditions such as post traumatic stress disorder.Nature | 4 min read
Reference: Proceedings of the National Academy of Sciences paper

Normally we would riff enthusiastically on the hopes of a cure for PTSD, or admire the ingenuity of the scientists who have made these discoveries. But today, if you’ll forgive us, we want to go in a different direction.

For if unconscious and automatic healing processes of the brain can so affect our memories, what does that say about our consciousness? Are you really in charge of the way you remember, feel, and think? At first glance this may seem to be the abstract playground of a lot of philosophers, psychologists and neuroscientists. The trouble for us is that many religious and economic systems depend on the assumption that each of us is an autonomous individual. Who freely chooses between good and evil or cheap and expensive. And these doctrines affect the real lives of millions. As Keynes observed, every politician who prides himself on being an entirely pragmatic individual is always the intellectual slave of some long dead economist. The writers of many religious books are much older still: but millions still kill and die for their words. We freely admit to being utterly baffled by all this, and are unlikely to return to anything quite so intricate again any time soon. But next time we hear anyone declaiming confidently on things like politics or religion, we will wonder deeply about what is happening in their mind,

As promised above we will endeavour to keep away from all this philosophical stuff. But if you want to know more, the works of Timothy O’Connor, Ben G Yacobi, Benjamin Libet, Daniel Dennet and Sigmund Freud provide useful starting points.

#free will #neurology #unconscious #conscious mind #economics #religion #politics #philosophy

Antibiotics saved her sight

Ellie Irwin seemed to have it all. She was beautiful, she was highly intelligent, she had graduated from medical school to what should have been a productive and fulfilling life. Instead, she was going blind in one eye, with terrifying possibility of losing sight in the other. Her life was an endless round of appointments, treatments and interventions. None seemed to come near to resolving the problem. At one point she had to have a cataract operation, and in despair, actually considered the possibility of having the problem eye removed.

But there turned out to be one last chance, as Fergus Walsh reports for the BBC. [1]Because thanks to a new science called metagenomics[2], doctors were able to identify the cause of her problem. To quote Fergus:

Metagenomics technology uses cutting-edge genomic sequencing, which can identify all bacteria, fungi or parasites present in a sample by comparing them against a database of millions of pathogens.

The cause turned out to be a rare bacteria of the leptospirosis family which Ellie had picked up while swimming in the Amazon river on a student holiday. The cure was simple: a good dose of antibiotics, as regular readers of this blog will have guessed. Today Ellie is a fully cured, happily functioning doctor. Recently, she even got married. Fergus knows how to end a story on a happy note!

For us there are a number of learning points here, faithful readers. One-what a good job antibiotics can do, Two-look what happens when you combine them with cutting edge techniques like metagenomics. Three-if you want new cutting edge techniques, it might help to employ a few well educated scientists to think them up, and universities to put them in. And four? No point going on with four. Everybody’s getting the drift.

[1]https://www.bbc.co.uk/news/articles/czx45vze0vyo

[2]https://en.wikipedia.org/wiki/Metagenomics

#antibiotics #metagenomics #science #research #health #medicine

Gepotidacin marches on

Gentle readers we’re more than happy to present the next chapter in the story of Gepotidacin. Against all the gloom and doom we serve up here, it really is a wonderful new class of antibiotic We have covered it before (LSS 30 1 23 ; 17 4 23) but today Manuel Ansede of El País [1] serves up a handy little resumé, not only of where we are now, where we have come form, and all kinds of hyperlinks to bring you up to speed. We can add little but to such erudition as Manuel’s. But for the sake of long term readers will riff on these few -humbly derived- observations

Firstly, this really is a new class of antibiotic., going by the snappy name of triazaacenaphthylene bacterial topoisomerase inhibitors. Unlike traditional antibiotics that target bacterial cell walls or protein synthesis, gepotidacin disrupts bacterial DNA replication by inhibiting two essential enzymes: DNA gyrase and topoisomerase IV. Which as most readers will instantly recall, are crucial for bacterial DNA replication and cell division. Thought so.

Secondly its already showing real world efficacy against all kinds of bacteria, including antibiotic-resistant strains like methicillin-resistant Staphylococcus aureus (MRSA) and multidrug-resistant Neisseria gonorrhoeae. Get that: real science works.

Thirdly, to make our old LSS point: effective action in medicine takes time. It requires teams of intelligent people. Who do not act alone, but exist in an ecosystem of universities . research institutes and government agencies. Which in turn requires careful nurturing , funds and right to feel safe enough to make long term plans without bullying and interference from the proudly ignorant and impulsive. American readers take note.

[1]https://elpais.com/ciencia/2025-04-14/el-primer-antibiotico-descubierto-en-30-anos-llega-justo-a-tiempo-de-evitar-que-la-supergonorrea-sea-imposible-de-tratar.

#gepotidacin #antibiotics #antibiotic resistance #health #medicine

Neural Maps show American Science at its best. But for how much longer?

If you want to explore the potential of a vast unknown region, first make a map of it. This why many of the finest minds from the sixteenth to the nineteenth century were cartographers. The human brain, with its astronomical numbers of circuits and connections, is our century’s equivalent of an unknown continent. Where the prizes( in medical research, pharmaceuticals and lucrative spin off disciplines) will go to those who have the best idea of the layout of the territory they are exploring. Which is why it came as no surprise to find that a multi-university team of American researchers have emerged as some of the foremost neurological cartographers of the year

Hannah Devlin of the Guardian reports the work of the teams from Baylor College, The Allen Institute and Princeton who have combined different techniques to create a 3-D circuit diagram of the neurons in a mouse brain. Now, there are some riders to note: this is only a tiny portion of the brain, comprising 84 000 neurons, half a billion synapses and about 5.4 km of the neuronal equivalent of wiring. Tiny numbers compared to the colossal sizes of a human brain, or that of an elephant or a dolphin. But it’s a start. Hannah quotes experts who honestly compare this work to the human genome project around the turn of the century. We need not remind readers as intelligent as ours of all the potential which that unlocked.

So: American researchers at the cutting edge. Princeton. Big research teams. “Yawn,” they said in the newsroom, “Where’s the story?” Well the story lies in the context of the consistent cuts in science funding by a certain Donald J Trump and his Administration. [2] It’s not just the money, it’s the attacks on the confidence and independence of the institutions themselves which stunt the development of a healthy research sector. And ultimately kill the goose which has laid so many eggs.(please-no more cliches!-ed) From the 1930s onwards America thrived by taking in the best researchers, and letting them work at what they excelled. Every science magazine you picked up, every episode of the old Horizon series on BBC, had an American somewhere in it. They even got to the Moon. Now there is a real danger that all that talent, all that potential will flow elsewhere. So far the EU and UK have not really go their act together. But they are waking up to the opportunity. Perhaps the first whole-brain maps will be made in Cambridge. The English one, that is.

with thanks to J Read

[1]https://www.theguardian.com/science/2025/apr/09/us-scientists-create-most-comprehensive-circuit-diagram-of-mammalian-brain

[2] https://www.scientificamerican.com/article/trump-administration-attacks-on-science-trigger-backlash-from-researchers/

#neurology #princeton #research #donald j trump #science #biology #brain

If you want to know why vaccines work, read this

Today we turn our blog over lock, stock and barrel to that admirable website Nature Briefing, whose links we have posted before and will do so again. This main piece from them explains we have done so:

Vaccines have given many families in wealthy nations the luxury of forgetting about the toll of some infectious diseases. But for some, that is changing: a second unvaccinated child in Texas died this week from measles. Anti-vaccine misinformation is rampant, not least from members of the administration of US president Donald Trump. Globally, many children still die because they can’t get the immunizations that they should, and cuts to international aid put progress at risk.

At the same time, vaccines are reaching new heights of success: the human papillomavirus (HPV) vaccine appears to prevent almost all cervical cancers. Vaccines against COVID-19 were developed with unprecedented speed and saved millions of lives. And from a scientific standpoint, the future looks bright, with mRNA technology, unlocked by pandemic-era research, offering hope for new jabs against viruses such as monkeypox, and therapeutic vaccines against cancer.Nature | 6 min read

Please add briefing@nature.com to your address book.!!!! Please !!!!

The piece follows with some excellent, easy to understand graphics, which you will have to click on their website to look at, and which obviously we can’t reproduce here. To extract some killer facts: by eliminating smallpox, vaccines have saved 5 million lives a year. By eliminating other scourges including measles, tetanus and TB they have probably saved about 154m lives overall since 1975. That anti-vaxxers must now march their legions against HPV vaccines raises deep questions about misogyny as well as the public understanding of science.

But it’s that quote at the beginning of the nature article which as got the hook in us. “Vaccines have given many families in wealthy nations the luxury of forgetting about the toll of some infectious diseases.” Yep, it’s that word luxury. It’s often associated with the word Vanity. And we need a bonfire of many of those very soon.

Once again, if you want to see the graphics, do this!

Please add briefing@nature.com to your address book.

Professor Devi Sridhar: a masterclass in the antibiotics crisis

If antibiotics stop working it will be the end of modern medicine as we know it. That is the essence of this article by the redoubtable Professor Devi Sridhar of Edinburgh University. We’ve channelled her before on this blog (LSS 24 8 24; 26 1023). UK readers will recall her many appearances on TV during the COVID 19 pandemic. Her cool, calm reason was a welcome antidote to the wild hysteria, baseless conspiracy mongering and shameful ignorance of that epoch.

Her article is a reprise of the main points we and other campaigners have been making for years. Over-prescription; lack of research; widespread public ignorance. The tireless Professor Sally Davies is name-checked. Of course: for she has done so much to proclaim this pressing danger. But the real problem for Devi is widespread abuse of antibiotics in farming industries. To produce short term higher yields in livestock such as cattle and pigs. Leading us to eat more meat, which in turn gives us obesity, go on diets that fail, high cholesterol, heart attacks., go on more failed diets…….our fingers fail on the keyboard in sheer despair.

So let’s take one key learning point from Devi’s razor sharp mind, because maybe we haven’t emphasised it enough here down the years. The real problem is that new classes of antibiotics are needed :

Developing similar versions to existing antibiotics isn’t enough because they won’t be as effective against pathogens that have developed resistance: we need totally new classes of drugs. And a recent World Health Organization report noted that since 2017, while 13 new antibiotics have obtained authorisation, only two represent a new chemical class.

Here is the nub of the problem. It wont get any easier, because the best research teams are multinational, and international co-operation is breaking down rapidly. Things like phages and AI may help. Serendipitous searching in nature, in places like gardens or the jaws of Komodo dragons {LSS passim)may could also be marginally helpful. But in the last analysis, disputes about who imports which computer circuit from whom distract attention from the real question. A woman dying from childbirth needs an antibiotic, not a smartphone to photograph it.

[1]https://www.theguardian.com/commentisfree/2025/apr/02/antibiotics-stop-working-prescription-gp-animal-farming

#antibiotic resistance #medicine #science #health #bacteriophage #komodo dragon

More good news on dementias

Photo by Andrea Piacquadio on Pexels.com

Dementia is our own internal pollution. Clear that pollution away, and the brain may start to function well again. If the systems which clear it slow down with age, then of course you won’t think so well. That is the startling new research reported today in the Mail by the admirable Syeeda Saad. [1] According to Syeeda and the rather clever scientists whom she channels, the brain is well equipped with these clearance systems when we are born. [2] They go by such recondite names as microglia, glymphatic and lymphatic systems. They clean up all the horrible waste we produce as we think-bits of cells, proteins, toxins, what have you. If they don’t, you accumulate all this detritus and your brain slows down, exactly like a sewage system blocked with fatbergs (yuck!-ed) [3]

Essentially the ingenious researchers target lymphatic networks outside of the brain in order to boost the clean-up systems within it. And get this-they have found new pathways called T Cell gateways which let them overcome the blood brain barrier, a wall that has bedevilled researchers for decades. [3]

All in all rather hopeful. Though as everyone admits these discoveries are at the early, tentative stage. Meanwhile there are lots of proven methods we can apply in order to reduce the risk of developing dementias. Including unpleasant ones like eating less junk food, drinking less booze and getting more exercise. There’s a thought. And here’s another to close. The team of scientists who did all this useful, public spirited, and one day profitable research are based at Washington University in the United States of America, What will become of them and their University in the financial and intellectual climate currently prevailing in that fallen country?

[1]https://www.dailymail.co.uk/femail/article-14560527/neuroscientist-remove-brain-waste-prevent-dementia-age.html

[2]https://www.vice.com/en/article/clearing-brain-waste-could-prevent-dementia-in-the-future/

[3]https://www.nature.com/articles/nature14432

#alzheimers #dementia #brain #t cells #lymphatic #medicine #health