Again no mention of artificial feeding and its implication in SIDS.

From yahoo:
http://news.yahoo.com/s/ap/20080703/ap_on_he_me/med_sids_brain



 

                            

                                Haywire brain chemical linked to sudden baby death




By LAURAN NEERGAARD, AP Medical Writer                                
                                Thu Jul  3,  5:09 PM ET
                            

                            
                        
 

                        











                        

WASHINGTON - Scientists have new evidence that the brain chemical best
known for regulating mood also plays a role in the mystifying killer of
seemingly healthy babies — sudden infant death syndrome. Autopsied
brain tissue from SIDS babies first raised suspicion that an imbalance
in serotonin might be behind what once was called crib death.


But specialists couldn't figure out how that defect could kill. Now
researchers in Italy have engineered mice born with serotonin that goes
haywire — and found the brain abnormality is enough to spur sudden death, in ways that mesh with other clues from human babies.


Moreover, the work suggests it might one day be possible to test newborns for their risk of SIDS.


For now, even an animal experiment can offer a message for devastated families:


"It should provide them with some sense of comfort that there was
nothing they could have done to prevent it," said Dr. Marian Willinger,
a SIDS specialist at the National Institute of Child Health and Human Development, who wasn't part of the study. "It is a real disease."


The work was published in Friday's edition of the journal Science.


SIDS is the sudden death of an otherwise healthy infant — anywhere
between ages 1 month and 1 year — that can't be attributed to any other
cause. It kills more than 2,000 U.S. infants each year, and is the
leading killer of babies after the newborn period.


Babies should always be placed to sleep on their backs, as the risk
of SIDS increases greatly when babies sleep on their stomachs. And
parents are urged not to allow anyone to smoke around their babies, or
to let their babies get too warm while sleeping.


But beyond those risk factors, doctors have little advice.


In 2006, Dr. Hannah Kinney of Children's Hospital Boston compared
brain tissue from 31 SIDS babies and 10 infants who died of other
causes. The SIDS babies had abnormalities in their brain stem that led to imbalances in serotonin, a neurotransmitter or chemical that helps brain cells communicate.


Low serotonin famously plays a role in depression. Less known to
laymen is that it also helps regulate some of the body's most basic
functions — breathing, heart rate, body temperature, arousal from sleep.


Dr. Cornelius Gross and colleagues at the European Molecular Biology Laboratory in Italy were studying how the serotonin system turns itself on and off when they stumbled onto the SIDS connection.


They genetically engineered
mice to have an overactive serotonin-regulating receptor, which in turn
reduced the amount of serotonin in the brains of otherwise normal baby
mice.


More than half of the mice abruptly died before they were 3 months
old. More intriguing, they had erratic episodes where their heart rate
would drop and, five to 10 minutes later, so would their body
temperature, Gross reported. Sometimes they died in the midst of what
Gross calls those crises, other times afterward.


The exact cellular defects in the mice and the human babies studied so far aren't identical, researchers caution.


But heart and temperature problems are consistent with what little human data is available, Willinger noted.


Here's another key: Gross could switch on and off the genetic defect that controlled serotonin levels in the mice. By doing so, he showed that older baby animals were less likely to die from haywire serotonin than younger ones.



"This is a very exciting part of the research," says Willinger —
because doctors have long suspected that if at-risk babies just get
through a developmental period, they'll be OK. That's impossible to
test in humans, however.













Jennifer Tow, IBCLC, CT, USA
Intuitive Parenting Network LLC

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