Bond, Q, and Controlled Cleavage

bond-q-cleavageBond, Q, and controlled cleavage – US chemists have made an iron catalyst that can be used to rapidly break strong carbon-hydrogen bonds within molecules, up to one thousands times faster than other methods. The research could solve one of the great chemical challenges.

Depressing brain scans – The first study of its kind has used MRI to demonstrate how changes in cortical thickness may surprisingly relate brain structure to clinical depression. The large-scale US study suggests that a thinning of the right hemisphere of the brain could be a risk factor for depression.

Naturally synthetic capsules – Synthetic capsules made from natural building blocks have been studied with NMR spectroscopy. The block copolymer capsules made from protein and sugar components mimic the behaviour of cells and might be useful as microreactors or as drug-delivery agents.

Going cellular – An artificial cell made from molybdenum-based building blocks whose pores can open and close has been devised by an international team. The pores can allow molecules that are “too big” into the capsule.

Sensitive SERS beats ELISA – Scientists in South Korea have developed a new magnetic approach to immunoassay detection of important biological marker compounds and antigens using surface-enhanced Raman spectroscopy (SERS) of hollow gold nanospheres. The technique is not only much faster than standard assays but up to 1000 times more sensitive.

Promiscuous drug transporter – The multi-drug transporter P-glycoprotein (P-gp) detoxifies cells by promiscuously exporting chemically unrelated toxins and drugs. Now, X-ray crystallography has helped US scientists home in on the protein that also helps give cancer cells resistance to chemotherapy agents.

Six of the best from the latest SpectroscopyNOW.com

Dehydrated Water

hydridic-oxygen-subhydrateMeanwhile, I have been trawling the medical and scientific literature for more than two decades, hoping to spot a genuine medical panacea that might also be used to get greasy deposits off your kitchen surfaces.

Now, is the time to reveal what I’ve found Hydridic Oxygen(II) Subhydrate (HOS). This dessicated compound is astounding. It looks and behaves like Dihydrogen Monoxide but has none of the lethal effects.

The DHMO site explains that Dihydrogen Monoxide itself, although colourless and odourless, is in reality hydric acid, whichcontains the incredibly reactive hydroxyl radical. This chemical species can cause mutations in DNA, damage essential proteins, and even burst cell membranes. Moreover, it can alter the critical biochemistry of neurotransmitters in the brain. It is a common chemical found in soda even those without benzene, desserts, all kinds of meat, and countless beauty products. Indeed, DHMO is present in many cosmetics at much higher levels than even nanoparticles.

Hydridic Oxygen(II) Subhydrate, in contrast, has none of these properties. Indeed, whereas hydric acid has an astoundingly high specific heat capacity and expands on cooling below its freezing point, HOS has an infinitesimal heat capacity even at absolute zero and is not affected by temperature fluctuations.

It is in the world of medicine that HOS reveals its true character, by reacting this compound with hydronium hydroxide it is possible to produce a substance that exists in a fluxional redox state bound in the liquid phase by hydrogen bonds. This material has properties closely aligned with DHMO and can act as both detox preparation, hangover cure, and with the addition of ionic surfactants can even remove greasy deposits from kitchen surfaces.

Environmentalists may offer cautionary tales of the use of excess quantities of this material especially given that the redox form of HOS is present throughout our homes. However, it is possible to eradicate HOS from the domestic environment, with a substance best described as copious.

HOS could be a boon for travellers, as it has such a low density that it is essentially weightless, and only requires handling in an air-filled storage container, the gaseous contents of which can easily be displaced. Just add water.

Meanwhile, there is currently widespread discussion on the internet of products such as filtered, ionised alkaline water. The hype surrounding these super-water products claims how they are “better” than bottled water and have a more positive effect on your health and can even clean your drains.

According to dozens of sales sites, the filtering system for producing this special water could allow you to replace medicines and even household cleaning products. The so-called antioxidant properties of these special waters are so powerful they are even recommended by their supporters as the ultimate hangover cure.

Apparently, you can set the alkalinity/acid, the pH, to produce medicinal water, cleaning product or hangover cure as you see fit.

But, I’m afraid there’s nothing special about this supposedly uniquely filtered water that separates it from bog-standard tap water or even the priciest of spring-fresh mountain water. It’s H2O however you look at it.

For those on 2009-04-01 who assumed that hydridic oxygen(II) subhydrate was some new scary substance, check out the new title to this blog post and think again.

Copper Tone Alchemist

copper-alchemistSpring has sprung for the Alchemist, who, under the northern sun, takes on a marginal copper tone this week.

First up, a new copper catalyst that can take a sideways swipe at organic aromatic compounds and make them go all meta. We also have copper nanorods for 3D computer chips.

After two decades of trying, it seems buckyballs are to finally come of age with the development of these all-carbon soccerball molecules as drug delivery agents for novel multiple sclerosis (MS) drugs.

The Alchemist also learns from C&EN how chemical manufacturers and legislators alike are banning toxic ingredients from consumer plastics. In electrochemical news, researchers are using magnets to move microscopic particles, which they can then track through the fluctuations in the magnetic field.

Finally, if you didn’t already know, the launch of the journal Nature Chemistry apparently represents a new prospect for the chemistry community with added molecular bells and whistles that make print journals look a bit flat.

Get the full skinny in my Alchemist column on ChemWeb.com

Disease Mongering or Medicalization

medicalizationThe medicalization of many social facets of our lives, multitasking pharmaceuticals and disease mongering are problems we should face head on.

The overlap between business ethics and medical ethics represent a moral minefield. Nowhere more so than in the domain of newly recognised and previously untreated disorders, syndromes and diseases, among them social anxiety disorder, non-physiological erectile dysfunction, aging, fibromyalgia, adult attention deficit hyperactivity disorder (ADHD), restless leg syndrome and female sexual dysfunction.

And for those who only read this far, my take away message is not to claim that such conditions are not real to those who suffer from them. Indeed, I actually suffer from irritable legs syndrome (as does my dad). It’s very real, very uncomfortable, and a real problem especially when it hits in a crowded and stuffy theatre with no option to take a hot bath or go for a jog to alleviate the unscratchable symptoms. Personally, I would love to have some way to make it stop when it gets bad and if that were a once a week pill, so be it.

Diagnoses can be very real and finding effective treatments certainly worthwhile, but it is the interests of patients that should be served and not purely those of pharma industry shareholders when a condition is medicalized.

Some observers have suggested that the process of medicalization, in which issues and problems have migrated into the scientific realm coincides with the demise of traditional values. They suggest that this migration may involve less of an improvement in understanding our biology and more of a change in social attitudes and terminology, with people suffering ambiguous symptoms and their advocates essentially feeding the beast.

This is sometimes no bad thing if it means previously unrecognised medical problems can be treated on the basis of scientific evidence rather than so-called received wisdom. However, medicalization is more often than not considered disease mongering. Writing in IJBGE, Geoffrey Poitras of the Simon Fraser University, in Vancouver, British Columbia, Canada, points out that there are two threads to the process of medicalization.

The first is social medicalization, which he describes as a form of social control in which individuals and their problems are taken into the fold of the medical establishment and can be manipulated. “One unexplored aspect of medicalization is associated with recreational drug use, from Valium to Viagra, threatening to ‘scientifically’ engineer various forms of drug addiction under the guise of medical treatment,” Poitras told Sciencebase.

The second thread is economic medicalization, the “transformation of the process for doing clinical trials into exercises that are motivated more as marketing vehicles than needed R&D.” This, he adds, is driven by the pharmaceutical companies and by the medical profession which benefits financially from the need to recruit patients into trials for fledgling disorders.

Another aspect of economic medicalization concerns the multitasking of drugs, more formally known as off-label prescription usage. Having gone through costly R&D, there is an economic incentive to find additional applications for any given approved drug.

Market researcher Megann Willson does lots of work interviewing physicians so finds medicalization an interesting concept. She points out that plain old garden variety depression in women now has a secondary indication called “premenstrual dysphoric disorder”. In that case, she asks, “Is the disorder truly latent or did we create a new indication and then find what we want to find?” She says that in Canada, “the acceptance or approval of a new drug indication is governed as much by reimbursement formulae as it is by whether there’s a good health rationale.”

Similarly, another area of female health that has been medicalized is post-partum depression, says Torr-Brown. “The real solution may be to increase socialization options for mothers with newborns,” she says, “Also, not sending them home after 24 hours at the hospital might help. In countries where there is good support for new mothers, post-partum depression is almost unheard of. We put it down to hormones, but in reality it may be the sense of being alone in the face of an overwhelming new challenge in caring for a new born.”

But, as alluded to earlier, there can be a positive side to medicalization from the individual’s point of view, suggests health strategist Christopher Ervin. “There is a potential good,” he says, “with hopes that people become more aware of their bodies and the functioning of the systems.” However, he also points out that people will begin to consider the human body as a perfect machine, and that any ailment can be instantly fixed with a pill. “I think [medicalization] will raise unrealistic expectations of the healthcare system to ‘cure’ people,” he adds, “Also it will absolve people from making efforts to care for themselves and better manage their health independently.”

Medical lawyer David Marshall agrees that the relabelling of any ‘normal’ human condition as a ‘medical problem’ is controversial. The label premenstrual dysphoric disorder is a case in point in which some observers suggest that it results from a patriarchal medical profession hoping to medicalize the menstrual cycle to justify marketing pharmaceuticals to treat the disorder, he explains. “This requires us to make a distinction based on supposed motives. If there is such a thing, pure medical research is engaged in the dispassionate search for a better understanding of human biology. As an incidental by-product of this better understanding, new forms of treatment or cure may emerge,” Marshall adds.

Big pharma exists to make big profits and this leads research down avenues where no competitor drugs exists. “The absence of drugs is often because the ‘problems’ are not considered medical,” suggests Marshall, “So, for example, major drug companies have spent several billion dollars trying to produce weight loss drugs when, arguably, excess weight is a lifestyle choice not a disorder (the confusion arising because hypertension and cardiovascular disease are co-morbidities to obesity).”

“In principle, the identification of a new disease or disorder is good for those that suffer without treatment because it offers hope,” adds Marshall, “But the creation of a new disease or disorder for the purpose of marketing a drug is only benefiting the pharmaceutical industry.”

So is medicalization a menace? In Norway, ADHD is “treated” by starting children at school later in Norway rather than prescribing Ritalin. Is normal sadness, through reclassification as a major depressive disorder, stifling the creativity often associated with melancholy? And, what is the true nature of the therapeutic options for people labelled mentally ill?And, what about the medicalization of childhood?

Sheryl Torr-Brown offers a useful perspective from 20 years experience in the industry. “I think [medicalizatio] is probably neither a good nor bad thing but somewhere in between,” she told Sciencebase, “If there is genuine reason to believe that the quality of life can be improved by the medicalization (and thus potentially treatment) of a previously latent condition, then it can be good.”

However, she points out that the very definition of quality-of-life has to be questioned. This is a controversial area in an age of rampant pill-popping with the expectation of instant fixes with no side effects. “Is ADHD a treatable condition, or a variant of human personality that confers advantage in systems less inclined to conformity and control than ours,” she asks.

“In that vast grey zone called healthcare, where along the spectrum between a true latent or rare disorder, a psycho-social behaviour variant or just a kink in the system does it necessitate pharmaceutical intervention,” asks Ervin.

It’s worth repeating, pharma companies enjoy increased profits because of medicalization, but that does not mean that we should not be treating previously latent disorders. Quality of life might be improved for countless individuals with new treatments whether pharmacological, physical or psychological. We should all think more critically about our options, although that can be difficult for some people simply not trained in critical thinking. “I think if individuals were able to think critically about their options, medicalization would be workable,” adds Torr-Brown. After all, your particular take on the human condition may one day be recognised as a disorder by the medical profession, but it remains your choice as to whether take the medicine.

Research Blogging IconPoitras, G. (2009). Business ethics, medical ethics and economic medicalization International Journal of Business Governance and Ethics, 4 (4) DOI: 10.1504/IJBGE.2009.023789

The Spicy Disciplinarian

turmeric-spicesFour more fascinating research discoveries feature in my column on SpectroscopyNOW this week, covering research into the medicinal effects of curry powder, cyst analysis, why nicotine does not kill instantly, and bristling nano balls.

The spicy disciplinarian – Solid state NMR has been used to explain why curcumin, one of the physiologically active components of the yellow spice turmeric has wound healing and other medicinal properties.

Atomic cyst assistance – Researchers in Turkey are using atomic absorption spectroscopy to analyse the levels metal ions and phosphorus in samples of fluid from breast cyst. They have observed a marked difference between the ratios of ions in the two main types of cyst one of which is more closely associated with the development of breast cancer.

Nicotine’s smoking gun – Years of structural work and wider studies have finally culminated in an explanation for nicotine’s overwhelming affinity for brain receptors and the addictive molecule’s almost total disregard for the nicotine receptors found in muscle tissues.

Bristling nano balls – A mathematical analysis of inorganic nanoparticles explains why they form complex structures with a layer of hydrophilic polymer chains.

Alchemist Goes Green

green-alchemistThis week The Alchemist goes green offering a survey of environmental news related to the chemical sciences.

First up is the development of porous materials that can extract hydrogen from mixtures of gases. Next, solar energy could be used to convert the greenhouse gas carbon dioxide back into useful hydrocarbon fuel methane, while chicken manure offers a fowl approach to bioremediating oil-contaminated soil.

On the global scale, NASA hopes to work with Cisco Systems to create a Planetary Skin to monitor worldwide carbon build up, and chemistry and computing have been combined to explain why Antarctica cooled from its former sub-tropical conditions of 35 million years ago to the icecap we see today.

Finally, the 2009 Tyler Prize for Environmental Achievement is awarded to two scientists for their work on understanding the human impact on climate change.

Get all the headlines and links in this week’s Alchemist.

Wireless Probing, Shiny Bugs, Remote Scanning

brain-probeProbing the brain wirelessly – IR-absorbing lead selenide particles form the basis of a method for the study of neuronal activation in samples of brain tissues without the need for hard-wired electrodes. The technique instead utilises light-triggered nanostructured semiconductor photoelectrodes to probe activity.

Propagation improves MRI, allows remote scanning – Swiss researchers have succeeded in exciting and imaging nuclear magnetic resonance in the human body in a way that could represent a paradigm shift for imaging.

Plug and play molecular logic – A “plug and play” approach to building molecular logic units has been developed by chemists in the UK and Thailand. The team used various spectroscopic techniques, including fluorescence and NMR to monitor their logical constructions.

White light microscope – Silver nanoparticles that can generate white light could improve microscopy in research into cancer and bone diseases according to a paper in the March issue of Nano Letters.

Crystal structure not to be sneezed at – Researchers have obtained the X-ray crystal structure of a monoclonal antibody (mAb) bound to the lethal H5N1 strain of avian influenza virus A. The structure reveals that the heavy chain of the mAb inserts into a highly conserved pocket in the of the haemagglutinin protein stem.

Sperm assessment – Raman spectroscopy could enable fertility researchers and IVF clinicians to assess individual sperm. The process involves capturing an individual sperm cell between two highly focused beams of laser light with Raman pinning down features of the trapped wriggler’s DNA.

Alchemist Turns Polyphile

Full Metal AlchemistA quite gratifying email from Professor James E. Hanson of Seton Hall University made me realise that I’d gone all poly with The Alchemist column this week:

As a polymer chemist myself, I really liked this issue of The Alchemist – or rather in this case the “polyalchemist” newsletter. Except for the beaver pheromones, each of the scientific breakthroughs/hot topics had to do with polymers! Anti-graffiti polymers, perfect polymers, polymers connecting nanodots, and two protein (= biopolymer) topics. Keep up the poly good work!

Here’s my intro from the ChemWeb site itself, click through for the full details and links:

Graffiti-defeating coatings could protect buildings and statues, The Alchemist learns this week, while the glandular chemistry of the beaver is revealed in stereo. Perfect polymers could boost optical data storage several hundredfold and nano dots might help map out tumor sites in the body. In biochemistry, another reason not to opt for pate de foie gras is revealed. Finally, structural biology gets motoring and wins a French scientist a major award.

The current Alchemist on ChemWeb

Whatever Happened to SARS?

sars-epidemicIn 2004, I did some reportage for the Royal Society from their meeting on emerging viral infections. The meeting was held just after the worldwide SARS outbreak that threw nations into chaos and had the more susceptible parts of the media hyping the end of the world. Of course, SARS, an emerging pathogen, was lethal and had devastating effects on thousands of people.

Ultimately, the first SARS outbreak was controlled, and a subsequent epidemic is yet to emerge. Severe acute respiratory syndrome, the disease caused by a highly infectious RNA coronavirus, remains in waiting. SARS is still an issue, it can, when required, undergo frequent mutations, which adds unpredictability to a future outbreak. There is no vaccine, assay, or treatment yet. Health officials can only resort to isolation and quarantine to control its spread.

In the meantime, scare stories surrounding the potential for avian influenza H5N1 have filled many column inches and web estate since that strain was first identified. We are, obviously, yet to succumb to an epidemic of global proportions of an evolved strain of H5N1 that could be transmitted person to person.

“At the peak of the worldwide SARS epidemic, apprehension arose out of partially disclosed, if not concealed, information on the current status,” says Yi-Chun Lin, at the Central Police University, in Taoyuan, Taiwan ROC. This he says led to many foreign companies to withdraw their business from Taiwan or move their bases elsewhere. At the time of the crisis, normal trading, investment and travel were suspended or came to a standstill. Some regions are yet to make a complete recovery from SARS and the advent of H5N1 in South Asia as well as the potential for the emergence of yet another virus or other pathogen has many investors wary of the region.

Lin suggests that proposals to be acted on in an emergency to help contain an emerging crisis, without obfuscation, ought to be put in place. This would allow foreign investors to undertake risk control assessment for this part of the world, ignore the scare-mongering, and be assured that whatever the next disease to emerge may be it will not have the shocking and devastating effects it otherwise would.

SARS dramatically illustrated the wide-ranging impact that a new disease can have in a closely interconnected and highly mobile world,” Lin says, “The public anxiety it incited spread faster than the virus, causing social unease and economic losses.” The suddenness of the outbreak provided a critical test of medical systems, infection control policies, and tested many national disease response and crisis management abilities.

In a subsequent disease crisis, human lives will be at risk and economic stability [for what that is worth at the moment!] thrown into jeopardy. “It is thus important to learn from experience and enhance preparedness for future,” adds Lin.

Research Blogging IconYi-Chun Lin (2009). Impact of the spread of infectious disease on economic development: a study in risk management Int. J. Risk Assess. Manage., 11 (3/4), 209-218

Alchemy, Spectroscopy, and the Hash

magnetic drug deliveryIn the latest ezines from SpectroscopyNOW:

Magnetic drug delivery for Alzheimer’s disease – Tiny pieces of magnetite incorporated into chitosan microparticles could act as efficient drug-delivery agents for the Alzheimer’s drug tacrine. Tacrine has notoriously low oral bioavailability and unclear efficacy but this delivery approach boosts uptake.

Contrasting tumours – US scientists have successfully predicted the outcome on breast tumours in a pre-clinical study of a so-called nano drug. Their research could help determine which patients will respond best to these and other drugs.

Long-distance protein – The behaviour of dynein, a relatively little-studied protein found in muscle has been characterised using fluorescent markers and electron microscopy, paving the way for X-ray diffraction and NMR spectroscopy studies.

Farming phosphorus – Phosphorus NMR can help distinguish between the nature of organic and non-organic farming and provide clues about how phosphorus from both sources affects waterways and coasts.

Under February’s Spotlight over on Intute I reported on:

Ocean-going stalks fight global warming – Burying crop residues at sea may help reduce global warming, according to researchers in the USA. They suggest that transporting millions of tonnes of bailed up cornstalks, wheat straw, and other crop residues from farms, and burying it in the deep ocean.

Testing times for chameleon chromium – A new standard for chemical testing has been developed for a carcinogenic chromium salt. The hexavalent chromium ion was at the heart of the pollution controversy on which the movie Erin Brokovich was based.

Musing on supermassive black holes – New observations from a collection of powerful telescopes have allowed astronomers from Germany and the US to settle a paradox regarding the behaviour of merging elliptical galaxies. The team has revealed evidence that the largest, , most massive galaxies in the universe and the supermassive black holes at their cores grow together rather than one leading to the other, which explains the “fluffy” nature of their central regions.

Alchemist news this week – We hear how tubular soot, better known as carbon nanotubes, might displace costly platinum in future fuel cells and so herald a new era in power supply. In physical chemistry new insights could explain why molten glass solidifies but retains the structure of a liquid and in biochemistry a new approach to producing glycoproteins could bring some regularity to biomedical research into these substances.

Also, under the Alchemist’s gaze: In troubled times, airport security is high on the agenda and a new detector system for spotting secreted liquid explosives is emerging from the prototype stage. Finally, carbon dioxide is not all bad, research into its effects on wound healing has led to a significant prize for British scientists.

Speaking of alchemists watch out for my “Science and Islam” with embedded video this Friday, you can call me Al.

Oh, the hash? Well…strongest link would have to be #science, but I just want to reference The Pogues in a very abstruse way.