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    <recommendedItem id="20100101_19_437"
                     title="Autism Risk Linked to Maternal Age (CME/CE)"
                     score="0.014"
                     href="http://www.medpagetoday.com/Pediatrics/Autism/tb/18341?impressionId=1265764044129"
                     
      Older women are more likely to give birth to a child who develops autism than younger women, but the father&apos;s age is a factor only when moms are younger, a large case-control study showed.&lt;br&gt;
&lt;br&gt;In an analysis of nearly five million births and more than 12,000 autism cases, every five-year increase in maternal age at delivery was associated with an 18% greater risk of the child later being diagnosed with autism, according to Janie Shelton, MPH, a doctoral student at the University of California Davis, and colleagues.&lt;br&gt;
&lt;br&gt;Mothers who gave birth when they were 40 or older had a 51% increased risk of having a child with autism compared with those who were 25 to 29, the largest age group (OR 1.51, 95% CI 1.35 to 1.70), the researchers reported in the February issue of &lt;em&gt;Autism Research&lt;/em&gt;.&lt;br&gt;
&lt;br&gt;The effect of the biological father&apos;s age appeared to depend on the mother&apos;s. When the mothers were 30 and older, paternal age did not significantly increase the risk of having a child develop autism. In mothers younger than 30, paternal age did contribute to the autism risk.&lt;p&gt;&lt;/p&gt;
&lt;p&gt;&quot;This study builds upon earlier work that has demonstrated associations between parental age and autism risk,&quot; commented Bryan King, MD, program director of the Seattle Children&apos;s Autism Center, in an e-mail.&lt;/p&gt;
&lt;p&gt;But previous studies have yielded mixed results on the relative contributions of the mothers&apos; and fathers&apos; ages.&lt;/p&gt;
&lt;p&gt;&quot;I think the size of the sample used in the present study (close to five million births) has resulted in a clear signal that both maternal and paternal age are involved,&quot; said King, who was not involved in the study.&lt;/p&gt;
&lt;p&gt;He noted, however, that parental age &quot;does not account for the big increase in autism prevalence, although it may be contributing somewhat.&quot;&lt;/p&gt;
&lt;p&gt;Shelton and her colleagues calculated that the rising average maternal age during their study  --  covering 1990 to 1999  --  contributed to a 4.6% increase in autism incidence. That compares with about a six-fold increase in autism rates in that decade, Shelton said in an interview.&lt;/p&gt;
&lt;p&gt;&quot;I worry a little bit that in the media attention on this issue that mothers who had children at ages 37, 38, 39 might think that, &apos;Okay, well that&apos;s why my child had autism,&apos;&quot; she said. &quot;And so, I think it&apos;s important to stress that the increased number of cases that we&apos;ve observed can&apos;t be attributable towards women having children later.&quot;&lt;/p&gt;
&lt;p&gt;The researchers looked at data from 4,935,776 singleton births in California in the 1990&apos;s using records from the state Department of Development Services. Records identified 12,159 cases of &quot;Full Syndrome Autism&quot; diagnosed before age 6.&lt;/p&gt;
&lt;p&gt;That diagnosis may include autistic disorder, as well as Asperger&apos;s disorder and pervasive developmental disorder not otherwise specified. However, the breakdown of specific diagnoses could not be determined from this data set, Shelton said.&lt;/p&gt;
&lt;p&gt;Even after controlling for parental education, the year of the child&apos;s birth, the race/ethnicity of the parents, the mother&apos;s parity, and insurance payment type, older maternal age was associated with an increased risk of autism in the child.&lt;/p&gt;
&lt;p&gt;Nancy Minshew, MD, director of the Center of Excellence in Autism Research at the University of Pittsburgh, said in an e-mail that the results were not surprising because genetic errors are more common with older parents.&lt;/p&gt;
&lt;p&gt;King said genetics were one possible mechanism underlying the relationship.&lt;/p&gt;
&lt;p&gt;&quot;The mechanisms by which risk goes up might include a greater likelihood of chromosomal changes, a greater likelihood of problems at birth like prematurity, and many other factors,&quot; he said. &quot;The possibility of environmental exposures would also be expected to increase with age, and so this finding does not necessarily help narrow our focus on causes.&quot;&lt;/p&gt;
&lt;p&gt;Sheldon and her colleagues wrote, &quot;It is plausible that multiple exposure types may increase the risk of autism through a common pathway or pathways (i.e., mitochondrial function, thyroid function, epigenetics, hormonal alterations) and be represented as a generalized increased risk with age.&quot;&lt;/p&gt;
&lt;p&gt;&quot;In this case,&quot; they continued, &quot;maternal or paternal age would serve as an index of lifetime exposure status and be a proxy for the true underlying etiologic agent.&quot;&lt;/p&gt;
&lt;p&gt;Shelton said further research is needed to determine why biological age is serving as a risk factor for autism.&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was supported by grants from the National Institute of Environmental Health Sciences and the Environmental Protection Agency and by the University of California Davis School of Medicine and Office of Graduate Studies.&lt;/p&gt;&lt;p&gt;The researchers did not report any conflicts of interest.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;&lt;p&gt;&lt;em&gt;This article was developed in collaboration with ABC News. &lt;/em&gt;&lt;img src=&quot;http://www.medpagetoday.com/upload/2009/10/1/14357_1.jpg&quot; mce_src=&quot;http://www.medpagetoday.com/upload/2009/10/1/14357_1.jpg&quot; alt=&quot;&quot;&gt;&lt;/p&gt;
    </recommendedItem>
    <recommendedItem id="20100101_19_368"
                     title="Lancet Retracts 1998 MMR-Autism Paper"
                     score="0.012"
                     href="http://www.medpagetoday.com/Pediatrics/Vaccines/tb/18255?impressionId=1265764044129"
                     
      &lt;p&gt;Editors of &lt;em&gt;The Lancet&lt;/em&gt; have retracted the 1998 study that first suggested autism might be caused by the MMR vaccine, less than a week after an official rebuke to the paper&apos;s lead author, Andrew Wakefield, MBBS, and two co-authors.&lt;/p&gt;
&lt;p&gt;In a brief note posted on the journal&apos;s Web site, &lt;em&gt;Lancet&lt;/em&gt; editors wrote, &quot;It has become clear that several elements of the 1998 paper by Wakefield et al. are incorrect, contrary to the findings of an earlier investigation.... Therefore, we fully retract this paper from the published record.&quot;&lt;/p&gt;
&lt;p&gt;Evidence presented in a Jan. 28 hearing before the U.K. General Medical Council&apos;s Fitness to Practise Panel persuaded the journal that the paper had misrepresented how the study was conducted.&lt;/p&gt;
&lt;p&gt;&lt;span class=&quot;msgBody&quot;&gt;The council, which has no direct American equivalent, is an independent, nationwide regulatory body that registers doctors and enforces standards of medical practice in the U.K.&lt;/span&gt;&lt;/p&gt;
&lt;p&gt;Hospital records and other sources contradicted findings of a 2004 investigation by Wakefield&apos;s institution, the Royal Free and University College, that the study had been properly vetted by an institutional review board.&lt;/p&gt;
&lt;p&gt;&quot;The claims in the original paper that children were &apos;consecutively referred&apos; and that investigations were &apos;approved&apos; by the local ethics committee have been proven to be false,&quot; according to the &lt;em&gt;Lancet&lt;/em&gt; editors.&lt;/p&gt;
&lt;p&gt;The editor of Britain&apos;s other leading medical journal, &lt;em&gt;BMJ&lt;/em&gt;, congratulated &lt;em&gt;The Lancet&lt;/em&gt; for its action.&lt;/p&gt;
&lt;p&gt;&quot;This will help to restore faith in this globally important vaccine and in the integrity of the scientific literature,&quot; according to a statement from Fiona Godlee, MB, BChir, BSc.&lt;/p&gt;
&lt;p&gt;In the 1998 paper, Wakefield and colleagues reported on findings in 12 children who, they said, had developed intestinal inflammation and autistic symptoms following MMR vaccination. They suggested that the inflammation released gut proteins into the circulation that eventually migrated to the brain, causing permanent damage reflected in autism symptoms.&lt;/p&gt;
&lt;p&gt;The report and the ensuing mass-media publicity sparked consternation among parents and the medical community. Vaccination rates in Britain and the U.S. dropped sharply, and measles rates spiked in consequence.&lt;/p&gt;
&lt;p&gt;Although subsequent population-based research and other studies have failed to confirm a causal link between MMR vaccines and autism, a vocal group of parents of autistic children continues to insist that it is real. They call Wakefield a hero.&lt;/p&gt;
&lt;p&gt;However, a nearly decade-long investigation by a British journalist, Brian Deer, uncovered discrepancies between the &lt;em&gt;Lancet&lt;/em&gt; paper and hospital records and other sources. (See &lt;a href=&quot;http://www.medpagetoday.com/Pediatrics/Autism/12850&quot; mce_href=&quot;http://www.medpagetoday.com/Pediatrics/Autism/12850&quot; target=&quot;_blank&quot;&gt;Father of Vaccine-Autism Link Said to Have Fudged Data&lt;/a&gt;)&lt;/p&gt;
&lt;p&gt;Whereas the &lt;em&gt;Lancet&lt;/em&gt; paper indicated that, in most cases, symptoms developed within days of vaccination, the records indicated that this was true only for one child, according to Deer&apos;s account in the &lt;em&gt;Times of London&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;The patients&apos; records also indicated that five of the children had psychosocial problems before vaccination, said the &lt;em&gt;Times&lt;/em&gt;, but the &lt;em&gt;Lancet&lt;/em&gt; paper described them as &quot;developmentally normal.&quot;&lt;/p&gt;
&lt;p&gt;In addition, the &lt;em&gt;Lancet&lt;/em&gt; paper described abnormal intestinal pathology results in the children, but the hospital pathology reports showed no findings of inflammation, the &lt;em&gt;Times&lt;/em&gt; report said.&lt;/p&gt;
&lt;p&gt;At last week&apos;s hearing, the U.K.&apos;s General Medical Council panel heard evidence that Wakefield had taken blood samples from children attending his son&apos;s birthday party and performed spinal taps on other children in a hospital without due regard for their safety.&lt;/p&gt;
&lt;p&gt;The panel found Wakefield guilty of more than 30 charges that he had acted unethically in conducting the study. He could be stripped of his license to practice in Britain, but no ruling has been made yet.&lt;/p&gt;
&lt;p&gt;Two of Wakefield&apos;s 12 co-authors on the 1998 paper, John Walker-Smith, MD, and Simon Murch, PhD, were also found to have committed ethical violations. The other 10 co-authors had previously repudiated the paper&apos;s findings and were not charged.&lt;/p&gt;
&lt;p&gt;Wakefield was in London while the hearing took place but did not attend. Afterward, he told reporters he was innocent of wrongdoing and would continue his research.&lt;/p&gt;
&lt;p&gt;Wakefield is now based at Thoughtful House, a private autism research and treatment facility in Austin, Texas. After the panel&apos;s ruling, it issued a statement expressing disappointment and calling the charges &quot;unfounded and unfair.&quot;&lt;/p&gt;

    </recommendedItem>
    <recommendedItem id="20100101_19_263"
                     title="Handedness Linked to ADHD (CME/CE)"
                     score="0.004"
                     href="http://www.medpagetoday.com/Psychiatry/GeneralPsychiatry/tb/18113?impressionId=1265764044129"
                     
      &lt;p&gt;Ambidextrous 5-year-olds are more likely to develop attention deficit-hyperactivity disorder symptoms later on as compared with right- and left-handed children, according to a study by a team of Swedish researchers.&lt;/p&gt;
&lt;p&gt;The findings are an indication that brain morphology and neural circuitry associated with handedness also affects cognitive and behavioral function, according to Alina Rodriguez, PhD, of Uppsala University in Sweden, and colleagues in an online report in &lt;em&gt;Pediatrics&lt;/em&gt;.&lt;/p&gt;
&lt;p&gt;The conclusions emerged from a longitudinal study of 7,871 children in northern Finland born in 1986, of whom 87 were mixed-handed, 632 showed a left-hand preference, and the remainder were right-handed at age 5.&lt;/p&gt;
&lt;p&gt;Rodriguez and colleagues found that when these children were tested at age 8, teachers were about twice as likely to report hyperactivity (odds ratio 2.06, 95% CI 1.09 to 3.91) or a combination of inattention and hyperactivity (OR 2.16, 95% CI 1.21 to 3.86) in the mixed-handed children compared with the right-handed ones.&lt;/p&gt;
&lt;p&gt;Similar increases in rates of teacher assessments of probable psychiatric disturbance and in overall school performance, as well as in parental reports of language problems, were seen in the ambidextrous children.&lt;/p&gt;
&lt;p&gt;Moreover, these learning and behavioral problems persisted into adolescence.&lt;/p&gt;
&lt;p&gt;Cohort members were evaluated at age 16 by parents on ADHD symptoms and provided self-reports of language and math performance in school.&lt;/p&gt;
&lt;p&gt;Those classed as mixed-handed were more than three times as likely to suffer inattention (OR 3.53, 95% CI 1.65 to 7.53) or a combination of inattention and hyperactivity-impulsivity (OR 3.16, 95% CI 1.42 to 7.08) relative to right-handed 16-year-olds, according to their parents.&lt;/p&gt;
&lt;p&gt;Self-reported problems in Finnish language and math classes were also significantly more common in the mixed-handed youths (OR 1.85, 95% CI 1.00 to 3.43 for language; OR 2.55, 95% CI 1.48 to 4.37 for math).&lt;/p&gt;
&lt;p&gt;These effects were not seen in left-handed children, Rodriguez and colleagues reported.&lt;/p&gt;
&lt;p&gt;&quot;Mixed-handedness can be used as a marker of risk for difficulties and warrants additional evaluation,&quot; they wrote.&lt;/p&gt;
&lt;p&gt;Adjusting for gender and birth weight and gestational age reduced the strength of the association between mixed-handedness and behavioral and learning problems. The point estimates of odds ratios for inattention and/or hyperactivity declined 1.4 to 1.6 and statistical significance was lost.&lt;/p&gt;
&lt;p&gt;But that actually supports the hypothesis that brain abnormalities stemming from before birth underlie what they called &quot;atypical lateralization&quot; and subsequent learning and behavior problems, Rodriguez and colleagues indicated.&lt;/p&gt;
&lt;p&gt;&quot;Recent neuropsychological work related to patterns of brain organization and function corroborates our findings,&quot; they added.&lt;/p&gt;
&lt;p&gt;They cited research indicating that ADHD is associated with left-side motor deficits, apart from hand preference, as well as reduced attention to visual stimuli on the left versus right side. These observations suggest weaker right hemisphere function, Rodriguez and colleagues argued.&lt;/p&gt;
&lt;p&gt;Other studies have suggested that neural transmission can be asymmetric between hemispheres, they said.&lt;/p&gt;
&lt;p&gt;&quot;These studies together highlight the possible interconnection among mixed-handedness, neurotransmitter dysfunction in the right hemisphere, and ADHD symptoms,&quot; they wrote.&lt;/p&gt;
&lt;p&gt;The authors pointed out that the &quot;impreciseness of handedness as a proxy for atypical lateralization is a limitation.&quot; Yet, the cost of direct assessment of the brain by imaging or electrical activity is &quot;prohibitive&quot; so handedness was a &quot;feasible alternative for large epidemiologic studies.&quot;&lt;/p&gt;
&lt;p&gt;And they said that even though the number of prevalence of mixed-handedness was low, &quot;it seems unlikely that those with right- or left-handedness were misclassified as mixed.&quot;&lt;/p&gt;
&lt;div style=&quot;float:left;border-style:solid;border-width:1px;border-color:#8dabbc;font-family:arial;font-size:12px;background-color:#DBE9F2;padding:5px;&quot;&gt;&lt;p&gt;The study was funded by the Academy of Finland, Sigrid Juselius Foundation, Thule Institute, University of Oulu, Finland, and the National Institute of Mental Health. Rodriguez also was supported by VINNMER.&lt;/p&gt;&lt;p&gt;No potential conflicts of interest were reported.&lt;/p&gt;&lt;/div&gt;&lt;div style=&quot;clear:both;&quot;&gt;&lt;/div&gt;
    </recommendedItem>
    <recommendedItem id="20090101_4_367"
                     title="USPSYCH: Atypical Antipsychotic Medication Cuts Behavioral Symptoms in Autism"
                     score="-0.005"
                     href="