Posts tagged as: biomed

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Friday, December 21, 2007

 

Blue man leaves Oregon in search of acceptance

‘It’s not makeup or paint that makes Paul Karason’s skin a bluish color.

The 57-year-old started making the transition from fair skin and freckles to what he looks like today 14 years ago.

“The change was so gradual that I didn’t perceive it and for people around me, likewise,” Karason said. “It was just so gradual that no one really noticed. It wasn’t until a friend that I hadn’t seen in several months came by my parents’ place to see me and he asked me ‘what did you do?'” [..]

Karason moved to Madera, California about six months ago after living in Oregon. He said too many people in Oregon were unkind to him and he hopes Californians will be different. [..]

Karason said he has not sought medical attention for the condition and he is prepared to live with it for the rest of his life.’


Thursday, December 20, 2007

 

Armed forces ‘superbug’ menaces UK

‘The UK, the United States and Canada are facing growing fears over a drug-resistant ‘superbug’ being brought back by wounded soldiers from Afghanistan and Iraq that threatens to contaminate civilian hospitals.

The intensified concern comes amid sharply rising infection rates in the US and fresh worries in Canada that the bug could be imported into its civilian healthcare system. Military health officials who have studied the bacterium in Afghanistan believe the infection of wounded British soldiers in field hospitals there is probably inevitable. [..]

The bacterium, Acinetobacter baumannii, first emerged as a ‘mystery infection’ afflicting US service personnel returning from the war in Iraq in 2003-04. It was described by a scientific journal specialising in hospital epidemiology as the ‘most important emerging hospital-acquired pathogen worldwide’. The journal added that it was potentially a ‘major threat to public health’ due to its ability to mutate rapidly and develop a resistance to all known drugs.’


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Monday, December 17, 2007

 

God Wants Local Man Dead, Local Man: ‘Bring It.’

‘God wants me dead. I pissed him off. Pissed him off good. I don’t know what sent him over the edge. Maybe it was my off-colour, sacreligious sense of humour. Maybe it was the bilby I drowned in a duffel bag. Whatever it was, one thing is clear – the great skyfairy wants hardcore vengeance, and he wants it now. Let’s educate you on whats happened so far. If you don’t want to read, I’ll summarise it for you in the next two words.

Get lost.’

It’s a long story, but read it all the way to the end if you’re gonna read it. Or you’ll miss this bit:

“AIE YE DEMONS, I DELIVER THEE UNTO HELL! …BURN IN ETERNAL DAMNATION!” 🙂


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Sunday, December 16, 2007

 

Harvard Scientists Build a Device to Smoke Weed During Brain Scan

‘Smoking during a brain scan is not easy. Why would you want to? Because functional magnetic resonance imaging (fMRI) allows researchers to observe activity in the brain, and doing so while smoking tobacco or pot could enhance our understanding of addiction and how to treat it.

But during an MRI, the head must remain completely still. In the narrow bore of a superconducting magnet, there isn’t much room to maneuver a cigarette or eat a pot brownie either. Smoke raises a second set of concerns. At the very least, it will stink up the lab. Perhaps, it could even damage the expensive machine.

So Blaise Frederick at Harvard Medical School built a device that delivers smoke into the narrow confines of a scanner. His colleagues, Kim Lindsey and Liz Ryan, tested it out on nine volunteers at McLean Hospital. They described their work in the May issue of Pharmacology, Biochemistry, and Behavior.’


Saturday, December 15, 2007

 

Evolution vs creation row ends in stabbing

‘A fruit-picking trip to southern New South Wales ended in the death of a Scottish backpacker who became embroiled in a bizarre row about creationism and evolution.

English backpacker Alexander Christian York, 33, was today sentenced to a maximum of five years jail for the manslaughter of Scotsman Rudi Boa in January last year. [..]

The Scottish couple and York, neighbours at the caravan park, were becoming friends and spent the night of January 27 drinking at the Star Hotel in Tumut.

However, towards the end of the night, an argument between York and the pair about creationism versus evolution escalated into a shouting match at the pub.

The couple, both biomedical scientists, had been arguing the case of evolution, while York had taken a more biblical view of history. [..]

According to Ms Brown, York was making dinner when he attacked the couple outside his tent, stabbing Mr Boa with a kitchen knife as the argument escalated.’


Tuesday, December 11, 2007

 

Slaughterhouse Workers Fall Ill

‘On the slaughterhouse floor at Quality Pork Processors Inc. is an area known as the “head table,” but not because it is the place of honor. It is where workers cut up pigs’ heads and then shoot compressed air into the skulls until the brains come spilling out.

But now the grisly practice has come under suspicion from health authorities.

Over eight months from last December through July, 11 workers at the plant in Austin, Minn. — all of them employed at the head table — developed numbness, tingling or other neurological symptoms, and some scientists suspect inhaled airborne brain matter may have somehow triggered the illnesses.

The use of compressed air to remove pig brains was suspended at Quality Pork earlier this week while authorities try to get to the bottom of the mystery. [..]

Five of the workers — including Kruse, who has been told she may never work again — have been diagnosed with chronic inflammatory demyelinating polyneuropathy, or CIDP, a rare immune disorder that attacks the nerves and produces tingling, numbness and weakness in the arms and legs, sometimes causing lasting damage.’


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Monday, December 3, 2007

 

Colostomy reversal botched, suit says

‘A surgery meant to reverse a colostomy on a Dover man went horribly wrong last year, resulting in fecal mater being discharged from his penis and urine passing through his colon, according to a lawsuit filed in Superior Court.

During the procedure, the suit alleges doctors at Kent General Hospital improperly stapled the colon to the bladder instead of the rectal stump. This left the patient with diarrhea, as well as gas and liquid stool passing from his penis.

The man was taken to Christiana Hospital 12 days later to have the procedure corrected, but not until after much suffering and embarrassment as well as “disfigurement and disability,” the suit claims. It also affected life at home with his wife, who also is suing the three doctors involved in the allegedly botched procedure, Surgical Associates P.A. and Bayhealth Medical Center Inc.’


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Sunday, December 2, 2007

 

Anorexia visible with brain scans

‘Sophisticated scans have revealed the eating disorder anorexia is linked to specific patterns of brain activity.

Even young women recovering from anorexia who have maintained a healthy weight for over a year had vastly different brain activity patterns.

The findings in the American Journal of Psychiatry point to a brain region linked to anxiety and perfectionism.’


Sunday, November 25, 2007

 

Scientists Point to Brain Region of ‘Free Won’t’

‘The capacity for free will is said to reside in the brain’s frontal lobes, which enable us to decide what actions we will take. Now researchers have discovered a spot in the frontal lobes that could be called the home of our “free won’t.”

The dorsal fronto-median cortex (dFMC), located in the center of the brain behind the forehead, becomes active when we inhibit an action, according to the authors of a paper in the Journal of Neuroscience. Researchers Marcel Brass and Patrick Haggard think this may explain why some people are less adept at restraining their impulses.

“The capacity to withhold an action that we have prepared but reconsidered is an important distinction between intelligent and impulsive behavior,” said Brass, of the Max Planck Institute for Human Cognitive and Brain Sciences and of Ghent University. This could have significant neuroethical implications, the authors state in their paper, since the inability to restrain impulses has been linked to antisocial and criminal behavior.’


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Saturday, November 24, 2007

 

Schizophrenia: The Curse That’s Almost a Blessing

‘New research is pointing to a different possibility: There may be no adaptive advantage provided by schizophrenia in and of itself, but rather from some genes that contribute to the disease. According to a study published in the Proceedings of the Royal Society, there is evidence that some of the gene variants associated with schizophrenia—especially a mutation in a gene called disrupted-in-schizophrenia 1 (DISC1)—have been selected for by evolution. This supports the idea that the disease may be a maladaptive combination of mutations that individually have the potential to enhance fitness. It could be a more complicated version of the familiar case of sickle cell anemia: having two mutant copies of a certain gene causes the disease, whereas having only one mutant copy provides protection against malaria.’


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Wednesday, November 21, 2007

 

Syphilis – Wikipedia

This is the wiki entry for Syphilis. Why, you ask? Because this small part of it amuses me greatly:

‘Until that time, as Fracastoro notes, syphilis had been called the “French disease” in Italy and Germany, and the “Italian disease” in France. In addition, the Dutch called it the “Spanish disease”, the Russians called it the “Polish disease”, the Turks called it the “Christian disease” or “Frank disease” (frengi) and the Tahitians called it the “British disease”.’

Also, the spiral shape of the organism is cool. That’s all. 🙂


Friday, November 9, 2007

 

Hide your old pills in poop, government says

‘Got some leftover drugs — the kind that someone else might want to use, such as painkillers or stimulants? Wrap them up in used kitty litter or other pet droppings, the government advises.

A pilot program at the Substance Abuse and Mental Health Services Administration is looking at ways people can safely dispose of unused prescription drugs that are liable to be abused. [..]

Of course some people do not drink coffee. But maybe they have a pet ferret.

“Ferret waste, like nearly any other form of pet waste, can be effectively used to help prevent the abuse of unused prescription drugs,” SAMHSA spokesman Mark Weber said.

This news delighted the American Ferret Association.’


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Brain ‘closes eyes’ to hear music

‘Our brains can turn down our ability to see to help them listen even harder to music and complex sounds, say experts.

A US study of 20 non-musicians and 20 musical conductors found both groups diverted brain activity away from visual areas during listening tasks.

Scans showed activity fell in these areas as it rose in auditory ones.

But during harder tasks the changes were less marked for conductors than for non-musicians, researchers told a Society for Neuroscience conference.’

I have been trying to explain to people how noises can make it hard to see for a few weeks now. 🙂 Hooray for science.


Thursday, November 8, 2007

 

Leeches ‘ruined student’s health’

‘A tourism student who twice had to walk barefoot in a Sri Lankan rainforest is suing a college, claiming his health was damaged by leeches.

James Sheridan, 50, said people on the field trip were made to remove their footwear because villagers considered the Unesco world heritage sites sacred. [..]

The court heard claims that Mr Sheridan, of Townhill, Swansea, was so weak after returning home that he could “only eat corned beef and lettuce for months”.

Mr Sheridan claimed he had suffered from malaria-like feverishness, sleeplessness, excessive sweating and lethargy in the six years since the trip, paid for with European funding as part of a tourism and leisure management MSc degree course.’


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How to build your own two-photon microscope

‘Two-photon (2-P) microscopy offers several advantages for biological imaging – in particular for non-injurious imaging of dynamic cell behaviors deep within intact tissues, organs and even the living animal [Cahalan et. al., 2003, Stutzmann et al., 2005]. However, its widespread adoption for such applications has been hindered by two factors: commercial 2-P microscopes are very expensive, and they typically acquire images at frame rates too slow to resolve many biological processes. Both of these problems may be circumvented by building your own 2-P microscope!

[..] The object of this web page is to gather together all the information you should need to build your own 2-P microscope.’


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Wednesday, November 7, 2007

 

Marx’s erupting skin may have influenced writings

‘Karl Marx, who complained of excruciating boils, actually suffered from a chronic skin disease with known psychological effects that may well have influenced his writings, a British expert said on Tuesday.

Sam Shuster, professor of dermatology at the University of East Anglia, believes the revolutionary thinker had hidradenitis suppurativa (HS) in which the apocrine sweat glands — found mainly in the armpits and groin — become blocked and inflamed.

“In addition to reducing his ability to work, which contributed to his depressing poverty, hidradenitis greatly reduced his self-esteem,” said Shuster, who published his findings in the British Journal of Dermatology.

“This explains his self-loathing and alienation, a response reflected by the alienation Marx developed in his writing.”‘


Ethiopia tackles Aids with coffee-flavour condoms

‘Doctors have long argued about the health effects of coffee, but its reputation seems likely to receive a boost thanks to a flavoured condom that aims to encourage safer sex in Ethiopia.

Around 300,000 of the coffee condoms were sold in a week when they were launched in September, according to the US charity DKT International.

It hopes to tap into Ethiopia’s coffee mania as a means to tackle high rates of HIV in the country, which is said to have invented the drink.

The charity said that with 2.1% of Ethiopians infected with Aids – and more than 7% in the capital, Addis Ababa – the flavoured prophylactic was more than a novelty. “Everybody likes the flavour of coffee,” said a spokeswoman.’


Couple Find Secret Moldy Room

‘Kerri and Jason Brown discovered a secret room behind a bookcase containing a homeowner’s worst nightmare — mold. Also in the room was a handwritten note: “You found it!” What the Browns found was a mold problem so serious the previous owner was forced to move, according to the note.

Fearing their young daughter’s health, the Browns hired an environmental engineer who detected high levels of several types of mold, including a black mold fungus called Stachybotrys.

“It terrified me,” Kerri Brown told WYFF-TV in Greenville. “I had heard reports of what it does for children, and I was terrified.”‘


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Superfast Laser Turns Virus Into Rubble

‘A physicist and his biologist son destroyed a common virus using a superfast pulsing laser, without harming healthy cells. The discovery could lead to new treatments for viruses like HIV that have no cure.

“We have demonstrated a technique of using a laser to excite vibrations on the shield of a virus and damage it, so that it’s no longer functional,” said Kong-Thon Tsen, a professor of physics at Arizona State University. “We’re testing it on HIV and hepatitis right now.” [..]

In the latest research, Tsen and his son demonstrated that their laser technique could shatter the protein shell, or capsid, of the tobacco mosaic virus, leaving behind only a harmless mucus-like mash of molecules.

The laser shattered the capsid at low energy: 40 times lower, in fact, than the energy level that harmed human T-cells. Other types of radiation, like ultraviolet light, kill microbes on produce, but would damage human cells.’


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Man Busted for Hospital Necrophilia Act

‘A 24-year-old New York City man remains jailed after he was found allegedly having sex with a 92-year-old woman’s corpse inside the morgue of the hospital where he worked.

Anthony Merino, who works as a lab technician at Holy Name Hospital in Teaneck, N.J., was arrested Sunday after police responded to a call from a security guard at the hospital. The guard reported witnessing the lab technician sexually desecrating the woman’s dead body, according to police.

“This is a first,” Lt. Dean Kazinci, spokesman for the Teaneck, N.J., police, told ABC News. “When you think you’ve heard and seen it all, something like this happens.”‘


Marijuana has its positives, study shows

‘A study of more than 5000 youngsters in Switzerland has found those who smoke marijuana do as well or better in some areas as those who don’t.

But the same was not true for those who used both tobacco and marijuana, who tended to be heavier users of the drug, said the report by Dr J.C. Suris and colleagues at the University of Lausanne.

The study did not confirm the hypothesis that those who abstained from marijuana and tobacco functioned better overall, the authors said.

In fact, those who used only marijuana were “more socially driven … significantly more likely to practice sports and they have a better relationship with their peers” than abstainers, it said.’


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Children’s toy banned after poisonings

‘Australia’s 2007 Toy Of The Year, Bindeez, was being pulled from shelves after it was revealed the product’s “magic beads” contain a chemical that when swallowed converts into the toxic illegal drug fantasy.

Two NSW children have been hospitalised over the past 10 days suffering seizures after eating the beads, while a two-year-old boy from Toowoomba in southeastern Queensland was flown to a Brisbane hospital after swallowing Bindeez beads. [..]

Testing by scientists in NSW found the chemical link to the drug gamma-hydroxy butyrate (GHB) – also known as fantasy or Grievous Bodily Harm – which can also cause drowsiness, coma and can lead to death. [..]

Sydney-based poisons specialist Dr Naren Gunja said the list of Bindeez’s ingredients supplied by the manufacturer said it should contain the non-toxic chemical known as 1,5-pentanediol.

“What we’ve found in the beads from testing done … by our hospital scientists is that it contains 1,4-butanediol,” Dr Gunja said, adding this chemical was metabolised by the body into GHB.’


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Tuesday, November 6, 2007

 

Scent of a FĂĽhrer

‘Guests at the Berghof, Hitler’s private chalet in the Bavarian Alps, must have endured some unpleasant odors in the otherwise healthful mountain air.

It may sound like a Woody Allen scenario, but medical historians are unanimous that Adolf was the victim of uncontrollable flatulence. Spasmodic stomach cramps, constipation and diarrhea, possibly the result of nervous tension, had been Hitler’s curse since childhood and only grew more severe as he aged. As a stressed-out dictator, the agonizing digestive attacks would occur after most meals: Albert Speer recalled that the Führer, ashen-faced, would leap up from the dinner table and disappear to his room.

[..] Strangely, Hitler was unfazed by the fact that this high-fiber diet was having the opposite effect on his digestion than what he had intended: His private physician, Dr. Theo Morell, recorded in his diary that after Hitler downed a typical vegetable platter, “constipation and colossal flatulence occurred on a scale I have seldom encountered before.”‘


Toddler with eight limbs branded ‘reincarnation of Hindu god’ to undergo life-saving operation

‘A toddler born with eight limbs and believed by some to be the reincarnation of the multi-limbed Hindu goddess Vishnu, is set to undergo a 40-hour operation to remove half of her limbs.

Lakshmi Tatma was born joined to a ‘parasitic twin’ and will go under the knife at the hands of 30 surgeons to remove two of her useless arms and legs.

The headless ‘twin’ is joined to Lakshmi at the pelvis and has its own spinal column and kidney. [..]

Her mother Poonam Tatma said she believed her daughter was “a miracle, a reincarnation” of Vishnu.’


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Friday, November 2, 2007

 

Animals In Formalin Preservation

‘In the preservation of animal specimens for study, animals are usually preserved using formalin where the whole body would be immersed in the posture in which it is supposed to stay permanently because it will be hardened. The ratio of formalin to carcass must at least be 12 to 1 to ensure a good fixation.

Here is a series of great specimens of animals submerged in formalin with 31 more pics after the jump.’


Thursday, November 1, 2007

 

Stem cells can improve memory after brain injury

‘New UC Irvine research is among the first to demonstrate that neural stem cells may help to restore memory after brain damage.

In the study, mice with brain injuries experienced enhanced memory – similar to the level found in healthy mice – up to three months after receiving a stem cell treatment. Scientists believe the stem cells secreted proteins called neurotrophins that protected vulnerable cells from death and rescued memory. This creates hope that a drug to boost production of these proteins could be developed to restore the ability to remember in patients with neuronal loss.

“Our research provides clear evidence that stem cells can reverse memory loss,” said Frank LaFerla, professor of neurobiology and behavior at UCI. “This gives us hope that stem cells someday could help restore brain function in humans suffering from a wide range of diseases and injuries that impair memory formation.”‘


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Friday, October 26, 2007

 

Human race will ‘split into two different species’

‘The human race will one day split into two separate species, an attractive, intelligent ruling elite and an underclass of dim-witted, ugly goblin-like creatures, according to a top scientist.

100,000 years into the future, sexual selection will mean that two distinct breeds of human will have developed.

The alarming prediction comes from evolutionary theorist Oliver Curry from the London School of Economics, who says that the human race will have reached its physical peak by the year 3000.

These humans will be between 6ft and 7ft tall and they will live up to 120 years.

Men will have symmetrical facial features, deeper voices and bigger penises.’


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Thursday, October 18, 2007

 

Researchers discover the dawn of animal vision

‘”Not only are we the first to analyze these vision genes (opsins) in these early animals, but because we don’t find them in earlier evolving animals like sponges, we can put a date on the evolution of light sensitivity in animals,” said David C. Plachetzki, first author and a graduate student at UC Santa Barbara. The research was conducted with a National Science Foundation dissertation improvement grant.

“We now have a time frame for the evolution of animal light sensitivity. We know its precursors existed roughly 600 million years ago,” said Plachetzki.

Senior author Todd H. Oakley, assistant professor of biology at UCSB, explained that there are only a handful of cases where scientists have documented the very specific mutational events that have given rise to new features during evolution.’


Wednesday, October 17, 2007

 

Garlic Boosts Hydrogen Sulfide To Relax Arteries

‘Eating garlic is one of the best ways to lower high blood pressure and protect yourself from cardiovascular disease. A new study from the University of Alabama at Birmingham (UAB) shows this protective effect is closely linked to how much hydrogen sulfide (H2S) is produced from garlic compounds interacting with red blood cells.

The UAB researchers found this interaction triggered red blood cells to release H2S, which then led to the relaxation of blood vessels. Fresh garlic was used at a concentration equal to eating two cloves. The resulting H2S production caused up to 72 percent vessel relaxation in rat arteries.

This relaxation is a first step in lowering blood pressure and gaining the heart-protective effects of garlic, said David Kraus, Ph.D., a UAB associate professor in the Departments of Environmental Health Sciences and Biology and the study’s lead author.’


Tuesday, October 16, 2007

 

Chlamydia reduces male fertility by ravaging sperm

‘Chlamydia – the most common sexually transmitted disease in the US and UK – causes dramatic genetic damage in sperm leading to male infertility, a new study suggests.

Men with chlamydia have more than three times the normal level of DNA fragmentation in their sperm, report researchers. However, results from the study also indicate that appropriate antibiotic treatment can help restore the genetic integrity of these men’s sperm as well as their fertility.

Until recently, doctors believed that chlamydia threatened women’s fertility only. The bacteria responsible for the disease, Chlamydia trachomatis can cause a woman’s fallopian tubes to become blocked or scarred, making it difficult or impossible to conceive a child.’


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