Wednesday, 3 September 2008

Normalizing Tumor Vessels To Improve Cancer Therapy

�Chemotherapy drugs often ne'er reach the tumors they're intended to treat, and radiation therapy is non always effective, because the blood vessels feeding the tumors ar abnormal "blabbermouthed and tortuous" in the words of the previous Judah Folkman, MD, founder of the Vascular Biology program at Children's Hospital Boston. Now, Vascular Biology researchers have discovered an explanation for these abnormalities that could, down the road, amend chemotherapy drug delivery. Their findings were published in the August 12 issue of the Proceedings of the National Academy of Sciences.


A tumor's capillaries small blood vessels that directly deliver o and nutrients to cancer cells are irregularly shaped, being overly thin in some areas and forming thick, knotty clumps in others. These malformations make a roiled, uneven stemma flow, so that also much ancestry goes to one neighborhood of the tumor, and too short to some other. In addition, the capillary endothelial cells lining the inner aerofoil of neoplasm capillaries, unremarkably a smooth, tightly-packed sheet, have gaps between them, causing vessel leakiness.


"These unnatural features of tumor vessels impair pitch of circulating chemotherapeutic drugs to the actual tumor site" says Kaustabh Ghosh, PhD, first author on the newspaper publisher, and a postdoctoral fellow in the laboratory of Donald Ingber, MD, PhD, the paper's senior source and interim co-director of the Vascular Biology program.


The idea of a therapy aimed at normalizing a tumor's blood vessels, to ensure that chemotherapeutic agents reach the tumor, has already been explored, merely these attempts have only targeted soluble factors, peculiarly vascular endothelial growth factor (VEGF). Tumors secrete VEGF in teemingness; it not only promotes blood vessel growth (angiogenesis), but makes them tattling. While block VEGF action mechanism helps reduce leakiness and improves vessel function, the effects experience been transient, Ghosh says.


Ghosh and Ingber took a different approach, focusing on the persona of mechanical forces on tumor origin vessels, which had previously been neglected. Past studies by Ingber and colleagues have shown that a capillary cell's sensitivity to soluble angiogenic factors like VEGF and subsequent blood vessel formation are determined by the mechanical equipoise between the cell's internal state of tension or contraction, and that of the surrounding support structure, or matrix, to which the mobile phone adheres. These forces guide normal vascular pattern formation. Because neoplasm vessels ar malformed, Ghosh wondered whether tumor capillary vessel cells have lost the normal cells' ability to sense and respond to changes in matrix stiffness and distortion.


To address this question, the researchers studied capillary cells isolated from mice prostate tumors, provided by Andrew Dudley, PhD, in the lab of Michael Klagsbrun, PhD, in the Vascular Biology Program, and exposed them to cyclic mechanically skillful stress mimicking the pulsatile nature of blood flow and matrix distortion resulting from rhythmical heart beatniks. They establish that normal capillary cells aligned themselves uniformly perpendicular to the force focal point, but to the highest degree of the tumor capillary cells failed to reorient, says Ghosh. These cells were "all over the place," and due to this want of alignment, gaps appeared between contiguous cells, which may explicate the increased vessel permeability.


Ghosh and colleagues also establish that neoplasm capillary cells sense and respond to matrix rigidness differently than normal cells. When placed on a stiff surface, mimicking the tumor matrix, the cells tended to keep spreading even after normal capillary cells stopped-up doing so. Because of these differences in "mechanosensing," the neoplasm capillary cells were able to form capillaries even when cellphone densities were very low-pitched, while normal cells failed to do so. At higher electric cell densities, normal cells formed nice capillaries, whereas the tumor cells balled up into tangled clumps, creating the irregular patterns seen in many images of tumor roue vessels. "Because high jail cell density increases contractility crosswise the entire cell layer, these findings suggested that tumor capillary cells ar inherently hyper-contractile," says Ghosh.


The researchers went on to find that this hyper-contractility results from an gain in the levels of a protein called Rho-associated kinase (ROCK), which controls tension within the jail cell. When they treated tumor capillary cells with an inhibitor of ROCK, they normalized the behavior of the neoplasm capillary cells, so that the tempered cells exhibited near-normal mechanical responses and formed more regularly-shaped vasiform vessels.


"In this study, we've uncovered a previously unrecognised role for tumor capillary tube cell mechanosensing and contractility in the formation of irregular neoplasm vessels, and have identified potential newfangled targets for vascular normalisation therapy that might be implemented in the clinic someday," Ghosh says.


Children's Hospital Boston is home to the world's largest enquiry enterprise based at a pediatric medical center, where its discoveries have benefited both children and adults since 1869. More than 500 scientists, including 8 members of the National Academy of Sciences, 11 members of the Institute of Medicine and 12 members of the Howard Hughes Medical Institute incorporate Children's research community. Founded as a 20-bed infirmary for children, Children's Hospital Boston today is a 397-bed comprehensive center for pediatric and adolescent wellness care grounded in the values of excellence in patient concern and sensitivity to the complex necessarily and diversity of children and families. Children's too is the primary pediatric teaching affiliate of Harvard Medical School.


Children's Hospital Boston

120 Brookline Ave., 2d Fl.

Boston, MA 02115

United States
http://www.childrenshospital.org



More info

Sunday, 24 August 2008

Suicidal Thoughts Not Uncommon Among US Students

div























Latest News For Psychology / Psychiatry
Study Shows Link Between Spanking And Physical Abuse
21 Aug 2008

The Effect Of Opinion Clustering On Disease Outbreaks
21 Aug 2008

Taming Your Temper: Learning To Turn Down The Heat
21 Aug 2008

View more news...

Today's Featured Health Videos









more than videos are available in our health videos discussion section.




Most Popular Categories



cancer �
cardiovascular �
dermatology �
hiv �
nutrition �

diabetes �
obesity �
pediatrics �
psychology �
neurology �
alcohol �

urology �
breast cancer �
women's health �
infectious diseases �
respiratory �
sexual health �

gastrointestinal �
pain �
pregnancy �
bones �
medical devices �
medicare �

depression �
prostate �
smoking �
alzheimer's �
allergy �
sleep �

biology �
genetics �
eye health �
sports medicine �
hypertension �
abortion �

health insurance �
autism �
stem cell research �
adhd �
liver disease �
multiple sclerosis �

arthritis �
pharma industry �
seniors �
dentistry �
it �
nursing �

blood �
fertility �


















More info

Wednesday, 6 August 2008

Rascal Flatts

Rascal Flatts   
Artist: Rascal Flatts

   Genre(s): 
Country
   



Discography:


Still Feels Good   
 Still Feels Good

   Year: 2007   
Tracks: 13


Best Of Ballads   
 Best Of Ballads

   Year: 2007   
Tracks: 14


Me and My Gang   
 Me and My Gang

   Year: 2006   
Tracks: 13


Feels Like Today   
 Feels Like Today

   Year: 2004   
Tracks: 12


Melt   
 Melt

   Year: 2002   
Tracks: 11


Rascal Flatts   
 Rascal Flatts

   Year: 2000   
Tracks: 11




Rascal Flatts, a land threesome known principally for its pleasing musical





Spanish Kid

Friday, 27 June 2008

Michael Suby

Michael Suby   
Artist: Michael Suby

   Genre(s): 
Soundtrack
   



Discography:


The Butterfly Effect (Score) OST   
 The Butterfly Effect (Score) OST

   Year: 2004   
Tracks: 24




 






Thursday, 19 June 2008

Many Hollywood celebrities rally behind Obama

LOS ANGELES (Reuters) - Ahead of a big fundraising event next week, many Hollywood power players are rallying behind Barack Obama in his bid for U.S. president, pledging money and starpower after lending early support to his one-time rival Hillary Clinton.


Experts say that since Clinton conceded defeat earlier this month in her bid to be the Democratic candidate, celebrities have quickly united behind Obama.


The result, they said, could be a campaign cash windfall for the senator from Illinois, but star support doesn't necessarily transfer directly to votes.


A Tuesday fundraiser in downtown Los Angeles is expected to attract a host of Hollywood stars and feature a performance by the singer Seal at a cost of $2,300 per ticket.


Director Steven Spielberg and his partner in the Dreamworks movie studio, David Geffen, and Dreamworks Animation Chief Executive Officer Jeffrey Katzenberg are organizing another Obama fundraiser for later this year, said Andy Spahn, a consultant to the Hollywood power-trio.


"If a Hollywood celebrity puts his or her mind to it, they're good money raisers," said analyst Sherry Bebitch Jeffe, a senior scholar at the University of Southern California.


"Barbra Streisand, you put her in concert and you raise fortunes for Democrats, or Bruce Springsteen," Jeffe said.


Mitchell Schwartz, who was Obama's California campaign manager through the primary election season, said Obama's appeal in Hollywood had been limited, until now. 

Friday, 13 June 2008

Sopranos - Castelluccio Gets Into Character


Former SOPRANOS star FEDERICO CASTELLUCCIO is taking method acting to a new level ahead of his role as CARVAGGIO in a new play - he is creating replicas of the legendary artist's works.

The 44-year-old Italian, who played mob soldier Furio in the hit TV show, will play Michaelangelo Merisi de Carvaggio in a production that opens in New York in October (08).

Castelluccio is an accomplished artist himself, having studied at Manhattan's School of Visual Arts - and is preparing to take on the 17th century artist by recreating classics, such as Carvaggio's David With the Head of Goliath.

He reveals to the New York Daily News, "Just as Carvaggio did. I've incorporated my self-portrait into the faces of David and Goliath."





See Also

Saturday, 7 June 2008

Country Star: I'm Big, Tasty and McPissed

Here's a nugget for you. A country music dude is suing McDonald's because he's convinced.... he's the guy on the Big 'n' Tasty box.

Let's review why this is ridiculous. First, the picture could be anyone. Second, the guy's name is Ira Dean -- why would a C&W artist go by Ira? And third -- do you really need a third?

BTW, Ira used to play for Trick Pony. McDonald's couldn't immediately be reached to cackle.



See Also

Sunday, 25 May 2008

'American Idol': Can David Cook Sustain A Rock Career After The Show?

For weeks now, David Cook, the 25-year-old husky-voiced rock dude from Blue Springs, Missouri, has ensured his survival on the seventh season of "American Idol" by taking some fairly memorable pop and R&B hits, and putting his own sometimes-unique rock-and-roll stamp on them. It's been his proven formula for success, and one he's sticking to as the competition nears its May 21 finale.
Over the course of the last 10 weeks, Cook has turned pop standards like Mariah Carey's "Always Be My Baby" into bona fide rock cuts. He gave the same treatment to Lionel Richie's "Hello" and the Beatles' "Eleanor Rigby" — all songs the general public knows, but not in the way Cook interpreted them.
With the exception of Michael Jackson's "Billie Jean," which was a blatant (and admitted) cop on Chris Cornell's cover of the song, Cook has been able to take these classics and make them his own. And the "Idol" audience has repeatedly rewarded him with enough votes to push him through to the next week.
"I think that's definitely helping him, for sure," said Michael Slezak, a senior writer for Entertainment Weekly known for his "Idol" coverage. "But I also think he's a really good singer and performer. I could definitely see him taking advantage of this Nickelback period. This is a time where that type of music is doing well, and fits quite easily into that world of radio play. David Cook seems to have held onto his credibility — about the type of singer he wants to be — throughout the competition. He hasn't lost any of that. If Mariah Carey week didn't do him in, what will? The thing is, you don't expect to see [rock covers of pop songs] during 'Idol.' We've grown accustomed to people belting big songs. Cook doing something you don't expect to see on the 'Idol' stage — I think that's given him a real edge."
While Cook — the crooner with the Peppermint Patty hairdo and the 5 o'clock scruff — continues to dazzle "American Idol" audiences, could he have a career after the show? Is Cook really the next Chris Daughtry, and does he have the same sort of selling power?
"There is a huge demand for bands like Nickelback, and he's doing songs that people are familiar with — taking other artists' songs and putting his own spin on it, so that they can be accepted by a format that normally would never care," explained Jonathan Azu, the vice president of Strategic Music Partnerships for CBS Radio. "At the same time, when he becomes an artist, most musicians don't want to do covers, so he has to start integrating some of his own material into what he's trying to do.
"There are certain kinds of artists ... who go through the traditional route of doing 100 shows every few months," he continued. "There are artists born of the digital age; Secondhand Serenade is a prime example. Then, there are the artists born out of media, and 'American Idol' is the greatest example. If artists like Cook are able to leverage their success on a major media platform and not stray away from it and become something different, he has a strong chance to become like a Daughtry. If he's willing to build a strong bridge between his character persona and the way he was cast on the show, and a strong bridge between how he's perceived in the media space from being on 'Idol' to what he wants to be post-'Idol,' he has an incredible foundation to build on."
Paul Geary, an artist manager who works with Smashing Pumpkins and Godsmack, said he sees several similarities between Cook and Daughtry, whom he met before the fifth-season contestant's elimination.
"As I had conversations with Daughtry along the way, when he was still a contestant, we were trying to work out an arrangement for him to be the new singer for the band Fuel," Geary said. "He came down and worked with them a bit, and it was great. At the time, I remember being asked the same question: Does he stick with 'American Idol,' and if he wins, will he be taken seriously at the rock [radio] formats? That's where the challenge is. All of these people are talented — the challenge is, you are now entering the world of commercialism, and how do you connect the dots with the consumer? 'Idol' is a pop mainstream forum, and probably couldn't be any further away from the active rock audience, which is an aggressive, male-based audience.
"With Daughtry, I said before he broke, that he would have a real challenging time breaking through the hard-rock format, which is what he was interested in doing," Geary continued. "For Cook, to be taken credibly in the rock world, 'Idol' is a tough place to [come from], and he should probably join a rock group. On the flipside, top 40 radio would be a natural home for him. Those formats can embrace a pop idol. It's alien to the active-rock world. I represent Godsmack, one of the kings of active-rock radio, and they would never dream about playing next to Daughtry. But you can't argue with success — the guy sold millions of records through that format."
Geary thinks Cook's best bet for success would be to follow the path Daughtry took and accept that he's a pop star, not a rocker.
"He has a likable personality," Geary said. "Depending on what, artistically, is on his mind — if he's going to front a band and go the rock route — he has major challenges ahead of him. Then again, if you look across the board, in the last few years, so few records have broken at all. Last year, 77,000 records were released, and only 14 of those sold over a million copies. Of that 14, four or five were rock bands, and of those, only one band sold a million records without top 40 radio support, and that was Tool. The rest were bands like Daughtry, Nickelback, Hinder, Chili Peppers. ... They are all selling albums through top 40 radio. I believe he could have a very similar career to the one Daughtry's had since 'Idol.' "
But that doesn't mean Geary wouldn't represent Cook in the future.
"I'd want to sit with him and talk about his goals, because if it's simply 'I want to sell lots of records and have hit records, and I don't care how I do it,' then sure," he said. "If he's coming through the door saying, 'Listen, I want to play next to the Foo Fighters,' for instance, well, that's going to be a much bigger challenge. It's more of an artistic challenge than a commercial one, given he's in two of the top forums: TV and top 40 radio. Those are the only two places where you can reach people. And the real way to reach millions now is passive. There are two kinds of fans: the music enthusiast, who buys albums, knows who's in the band and goes to shows and buys the T-shirt, and then there's the passive listener — the 'Oh, I like that song' types, the housewives. At some point, you peak out on the music enthusiasts anyway, so you need that passive audience."
Erik Bradley, the music director at Chicago's B96 radio station for the last 15 years, said he thinks Cook's already a rock star, and that he'll have a massive career after the show's end.
"He just looks like a star," Bradley said. "He's in that Daughtry vein — I think he's a newer version of Daughtry. And you know, they always talk about how you need to make songs your own on 'Idol' and reinvent them, which he does every week. To me, that's one of the most interesting story lines of the season — watching what he does next with these songs. Clearly, he's doing something right, and I think a large segment of Daughtry's fanbase are the ones voting for Cook, and they'll be the ones buying his record."
Get your "Idol" fix on MTV News' "American Idol" page, where you'll find all the latest news, interviews and opinions. And relive six seasons of "Idol" hot messes and high notes in six minutes with our video timeline.

Wednesday, 21 May 2008

Sheen fails in bid to stop Richards TV show

Sheen fails in bid to stop Richards TV show



Thespian Charlie Luster has lost a bid to keep his ex Denise Richards from including their iI daughters in a fresh realism TV establish, later on a Los Angeles label ruled in the actress' favor.
Sheen is objecting to lease the former couple's girls, three-year-old horse Surface-to-air missile and two-year-old horse Lola, take part in the TV programme.
Just after a closed audience at the Los Angeles family court on Tuesday, Commissioner William Harvey A Silberman ruled Richards was allowed to admit the children in the broadcast, subject to a number of rules.
The inside information of which receive yet to be released.
I. A. Richards was represented in homage by her attorney, world Health Organization participated via telephony, spell Sheen attended the sense of hearing with his attorney.
The TV testify will reportedly revolve about Richards' life as a working single mama in Hollywood.




Elton John to perform at Nelson Mandela’s 90th birthday gig

Thursday, 8 May 2008

Lindsay Lohan’s pal “practically moves in”

Lindsay Lohan’s pal “practically moves in”



Lindsay Lohan’s brother Samantha Ronson has “practically moved in” with the troubled star at her Los Angeles pad in a call to have for sure she girdle away from drugs.
“Surface-to-air missile hush has her possess position,” a source told the Freshly House of York Brand, “merely she spends every night at Lindsay’s” to make sure she girdle away from drink, drugs and trouble.





Less Than Jake

Wednesday, 7 May 2008

ANDREW STERMAN

ANDREW STERMAN





The Path to Peace - Music Inspired by the Inner Journey of Mahatma Mahatma Gandhi (OMM): B+

Longtime Philip Deoxyephedrine Corps de ballet soloist Sterman bites forth a giant piece of program/dance music with this Mahatma Gandhi tribute - and then quick proves that it’s non more than he can buoy chewing. Deep contemplative only likewise highly





Arctic Monkeys dominate NME Awards

Arctic Monkeys dominate NME Awards



Rubber Monkeys have dominated the NME Music Awards once more this year, picking up three gongs.
The Sheffield bikers claimed the awards for Topper British people Band, Best Track for 'Fluorescent Adolescent' and Best Picture for 'Teddy Picker'.
The radical too north Korean won the awards for Best Album and Best Band at this year's Briton Awards.
The Klaxons claimed the award for Best Album for 'Myths of the Close Future' and newcomer Kate Nash was named Best Solo Creative person at the ceremony.
Amy Winehouse, wHO was nominated for four-spot NME Awards, picked up but single awarding on the night, for Worst Dressed.
The award for Best Fresh Band went to The Enemy, Muse picked up the Best Dwell Band bell and The Killers south Korean won Topper International Band for the second year in a row.
Pop vocaliser Kylie Minogue was voted Sexiest Womanhood, piece Babyshambles singer Pete Doherty was named Hero of the Year at the awards.
Chink come out our NME Awards photo gallery here.





Nadine Coyle dating Josh Hartnett?

Nadine Coyle dating Josh Hartnett?



Girls Loudly star Nadine Coyle is rumoured to be dating Hollywood doer Jolly Hartnett.
The pair have been spotted together in LA several times in the last week, according to the Daily Asterisk.
A reservoir told the newspaper: "The whole of Hollywood was talking around Chaff and this reasonably Irish whiskey missy. Non everyone knows Girls Loudly hither so citizenry were trying to work come out world Health Organization this stunning daughter was.
"They were spotted at [temp Oscar locus] Blanco 101 look very much like a couple and chatting all over drinks until the betimes hours."
Last month Derry-born headliner Nadine split with 'Desperate Housewives' doer Jesse Metcalfe after an on-off relationship.
She lately dismissed surmisal that she was preparing to renounce Girls Out loud.





Akerbeltz

Akerbeltz   
Artist: Akerbeltz

   Genre(s): 
Metal: Death,Black
   



Discography:


A Wave Of Darkness   
 A Wave Of Darkness

   Year: 2000   
Tracks: 7




 





DJ Quik