Geometry.Net - the online learning center
Home  - Health_Conditions - Rett Syndrome
e99.com Bookstore
  
Images 
Newsgroups
Page 4     61-80 of 114    Back | 1  | 2  | 3  | 4  | 5  | 6  | Next 20
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

         Rett Syndrome:     more books (46)
  1. Keeping Katherine: A Mother's Journey to Acceptance by Susan Zimmermann, 2004-12-28
  2. Grief Dancers: A Journey into the Depths of the Soul by Susan Zimmermann, 1996-10
  3. A NEATS Analysis of Autism Spectrum Disorders by Ph.D., LICSW Jane F. Gilgun, 2009-11-23
  4. What is PDD?: Pervasive developmental disorders in school age children a handbook for parents, teachers and concerned professionals by Richard Paul Morriss, 1993

61. Rett Syndrome
rett syndrome. I decided to do rett syndrome for my Web Paper because it is a disease that has effected my family directly over the past seventeen years.
http://serendip.brynmawr.edu/biology/b103/f01/web1/charamella.html
This paper was written by a student in a course at Bryn Mawr College, and reflects that student's research and thoughts at the time the paper was written. Like other things on Serendip , the paper is not intended to be "authoritative" but is instead provided to encourage others to themselves learn about and think through subjects of interest, and, by providing relevant web links, to serve as a "window" to help them do so. Web links were active as of the time the paper was posted but are not updated.
Biology 103

2001 First Web Report

On Serendip
Rett Syndrome
Deb Charamella
Rett Syndrome randomly effects girls 1 in 10,000 girls. There have been a few reported cases in males however males do not live past birth. Many girls have been misdiagnosed because Rett Syndrome is closely related to other disorders, such as autism, ataxic cerebral palsy, atypical Angelman's syndrome, mitochondria disease, spinocerebellar among others. The reason that Rett syndrome is easily misdiagnosed, is because there is such a wide range in functioning among girls with Rett Syndrome. Rett Syndrome is diagnosed by the following: -Normal development until 6-18 months -Normal head circumference at birth followed by slowing of head growth -Loss of verbal language -Purposeful hand use is replaced by stereotypical hand movements such as hand clapping, constant hand wringing, or other midline hand repetitive hand movement

62. Rett Syndrome
rett syndrome. What is it? rett syndrome is a severe progressive neurological disorder that affects only females. The symptoms
http://www.hmc.psu.edu/childrens/healthinfo/r/rhett.htm

63. AllRefer Health - Rett Syndrome
rett syndrome information center covers causes, prevention, symptoms, diagnosis, treatment, incidence, risk factors, signs, tests, support groups, complications
http://health.allrefer.com/health/rett-syndrome-info.html
AllRefer Channels :: Yellow Pages Reference Health Home ... Contact Us Quick Jump ADD/ADHD Allergies Alzheimer's Disease Arthritis Asthma Back Pain Breast Cancer Cancer Colon Cancer Depression Diabetes Gallbladder Disease Heart Attack Hepatitis High Cholesterol HIV/AIDS Hypertension Lung Cancer Menopause Migraines/Headaches Osteoporosis Pneumonia Prostate Cancer SARS Stroke Urinary Tract Infection 1600+ More Conditions Alternative Medicine Health News Symptoms Guide Special Topics ... Medical Encyclopedia
You are here : AllRefer.com Health Rett Syndrome
Rett Syndrome
Definition
Treatment

Expectations or Prognosis
Complications ...
Go To Main Page
Definition Rett syndrome is an inherited disorder that affects only females. The syndrome causes mental retardation and developmental degeneration. Rett Syndrome is a severe progressive neurological disorder that causes marked developmental regression, especially in the areas of expressive language and hand use. It occurs only in girls. The gene associated with this disorder was recently identified on the X-chromosome. This gene encodes methl-CpG-binding protein 2 (MeCP2), which regulates synthesis (transcription) of various other proteins. Synthesis of incorrect proteins, due to mutations in the gene, causes damage in the maturing brain. The severity of the disease is linked to specific types of mutation.

64. HBOT, Rett Syndrome, & Cerebral Palsy
application as a treatment for brain injuries, and the question of its application to developmental disabilities including cerebral palsy and rett syndrome.
http://hbot.freeservers.com/
HBOT for Developmental Disabilities including RS and CP
by
Earl M. Williams, Ph.D.
New Location update: Personal Note FAQ , and
7/8/01 update: see links to the
latest analysis of the Montreal study of HBOT and cerebral palsy

(a French site, so scroll down to the "Version anglaise" link starting with "Analysis of the results of..."),
and the second Symposium on Cerebral Palsy and the Brain Injured Child (July 25-28, 2001) In Spring 1999, I wrote an extensive literature review paper on hyperbaric oxygen therapy (HBOT) , its demonstrated application as a treatment for brain injuries , and the question of its application to developmental disabilities including cerebral palsy and Rett Syndrome . The paper includes a large number of Internet links and almost 100 scientific references. The goal of the paper is to clearly synthesize important HBOT information that has not previously been presented in one place: on HBOT, the research showing its effectiveness for brain injury, the rationale for its applicability to additional neurological conditions, HBOT treatment protocols, and the data on each of its purported side effects (seen only at high pressures). As of July 2000 this paper is no longer fully current, but I hope to be able to revise it at some point. For now, the many Internet links and references in the paper will lead you to more current information. In particular, see the new 3rd edition of the "Textbook of Hyperbaric Medicine" by K. K. Jain ( click here to view publisher information).

65. Rett Syndrome
rett syndrome. Who to Contact Site Index. rett syndrome. A neurodevelopmental disorder that affects females, rett syndrome
http://www.ggc.org/Diagnostics/Molecular/rett_syndrome.htm
Rett Syndrome
Who to Contact Site Index
Rett Syndrome
A neurodevelopmental disorder that affects females, Rett syndrome is associated with cortical atrophy, stereotypical hand movements and severe mental deficiency. With an incidence of 1 in 10,000 - 15,000, it is one of the most common causes of mental retardation in females. Rett syndrome is characterized by loss of acquired skills after a period of normal development in infancy. Mutations in X-linked methyl-CpG binding protein 2 (MECP2) which cause Rett syndrome include both nonsense (R168X and R255X) and missense (R106W and R306C) mutations. Genetic analysis for Rett Syndrome at the Greenwood Genetic Center includes complete sequencing of the entire coding region of the MECP2 gene. Specimen requirements : 5 ml of peripheral blood collected in an EDTA (lavender top) Vacutainer tube is preferred. The minimal blood needed for reliable DNA isolation is 3 ml. If necessary, ACD solution A Vacutainer tubes (yellow top) may be submitted. Please contact the laboratory for more information. Transport : Please contact the Molecular Diagnostic Lab Coordinator (1-800-473-9411) for shipping information. The specimen should be kept at room temperature and delivered via overnight shipping. FedEx is preferred. If shipment is delayed by one or two days, the specimen should be refrigerated and shipped at room temperature. Do not freeze the specimen. Samples collected on Friday can be safely designated for Monday delivery. However, our lab does accept specimens on Saturdays.

66. Rett Syndrome Association
About the Charities rett syndrome Association UK rett syndrome is a complex lifelong neurological disorder. What does the rett syndrome Association UK do?
http://www.jeansforgenes.com/2_about/2085_aboutrett.php
Rett Syndrome Association UK
What does the
Rett Syndrome Association UK do? The Rett Syndrome Association UK funds research, and gives help, advice, information and support to parents, carers, siblings and professionals. Jeans for Genes donations in 2004 will help fund a research team which is studying the link between the genetic make-up of a person with Rett syndrome and the conditions physical characteristics. Results will lead to an improved accuracy of genetic counselling for families and of decisions made on the basis of this. A second project being funded is exploring the possibility of therapeutic approaches to Rett syndrome and especially whether these could delay, prevent or even reverse the onset of the condition.

67. Rett Syndrome
rett syndrome Important It is possible that the main title of the report rett syndrome is not the name you expected. Please check
http://my.webmd.com/hw/health_guide_atoz/nord182.asp
var guid_source = ""; var guid_source_id = ""; //unused var encodedurl = ""; WebMD Today Home
WebMD News Center
Member Services
WebMD University

My WebMD

Find a Physician
Medical Info
Check Symptoms

Medical Library

Quizzes, Calculators

Clinical Trials
... Women, Men, Lifestyle
Who We Are About WebMD
Site Map
You are in Medical Library Choose a Topic Our Content Sources Ask A Question Clinical Trials Health Guide A-Z Health Topics Symptoms Medical Tests Medications ... For a Complete Report Rett Syndrome Important It is possible that the main title of the report Rett Syndrome is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report. Synonyms
  • Autism, Ataxia, and Loss of Purposeful Hand Use RS RTS
Disorder Subdivisions
  • None
General Discussion Rett Syndrome is a rare neurodevelopmental disorder that appears to occur almost exclusively in females but can occur rarely in males. Infants and children with the disorder typically develop normally until about 7 to 18 months of age, when they may begin to lose previously acquired skills (developmental regression), such as purposeful hand movements and the ability to communicate. Additional abnormalities typically include slowing of head growth (acquired microcephaly); development of distinctive, uncontrolled (stereotypic) hand movements, such as hand clapping, rubbing, or "wringing"; and impaired control of voluntary movements required for coordination of walking (gait apraxia). Affected children also typically develop autistic-like behaviors, breathing irregularities, feeding and swallowing difficulties, growth retardation, and episodes of uncontrolled electrical activity in the brain (seizures).

68. Rett Syndrome
rett syndrome is a progressive neurological disorder in which individuals exhibit reduced muscle tone, autisticlike behavior, hand movements consisting mainly
http://healthlink.mcw.edu/article/921961093.html
Search Articles:
search tips
Please Take the HealthLink Survey
Email this article

Print this article

Find related articles: By topic:
Neurology
By keywords:
autistic

Receive Health Link via email!
Subscribe now >>
Rett Syndrome
Rett syndrome is a progressive neurological disorder in which individuals exhibit reduced muscle tone, autistic-like behavior, hand movements consisting mainly of wringing and waving, loss of purposeful use of the hands, diminished ability to express feelings, avoidance of eye contact, a lag in brain and head growth, gait abnormalities, and seizures. Hypotonia (loss of muscle tone) is usually the first symptom. The syndrome affects approximately 1 in every 10,000-15,000 live female births, with symptoms usually appearing in early childhood between ages 6 and 18 months. The cause of Rett syndrome is unknown. There is no cure for Rett syndrome; however, there are several treatments options. These include treatments for the orthopedic and learning disabilities and seizures that may occur in individuals with Rett syndrome. Some children may require special nutritional programs to maintain adequate weight. In spite of the severe impairments that characterize this disorder, the majority of individuals with Rett can be expected to reach adulthood, surviving at least into their 40s. However, the risk of death is increased. Sudden, unexplained death possibly from brainstem dysfunction with respiratory arrest often occurs.

69. Rett Syndrome
rett syndrome. rett syndrome Association UK. International rett syndrome Association. The home page for the International rett syndrome Association.
http://omni.ac.uk/browse/mesh/C0035372L0035372.html
low graphics
Rett Syndrome
other: Canavan Disease Cockayne Syndrome Hepatolenticular Degeneration Hereditary Central Nervous System Demyelinating Diseases ... Rett Syndrome Association UK Rett Syndrome Association UK is a registered charity which offers support to females affected by Rett Syndrome, as well as the carers of these girls and women. Rett Syndrome is a neurological disorder which occurs only in females and those affected are totally dependent on others for their needs. The Rett Syndrome Association UK (RSAUK) provides support for its members in a variety of ways such as, office help, self-support groups, contact supporters network, CarersLine and out of office hours contact numbers. This site provides details about these services, their newsletter, and information about the syndrome. Rett Syndrome Organizations, Nonprofit Great Britain Charities ... International Rett Syndrome Association The home page for the International Rett Syndrome Association. The site contains information about Rett (a neurological disorder seen almost exclusively in females), case studies, a discussion group for professionals and the parents of Rett syndrome girls, events, publications, news updates and research contacts. Rett Syndrome Organizations, Nonprofit

70. Special Child: Disorder Zone Archives - Rett Syndrome
rett syndrome. Naomi CatfordRobinson. Features and Characteristics. rett syndrome is often mistaken for autism, cerebral palsy, and mental retardation.
http://www.specialchild.com/archives/dz-002.html
Disorder Zone
Archives Rett Syndrome
Naomi Catford-Robinson
Rebecca Morris Introduction Rett syndrome (RS) is a genetic disorder that is characterized by an initial period of normal development, followed by a loss of communication skills and purposeful hand movements. It is a disorder that is seen almost exclusively in females and occurs in a variety of racial and ethnic groups worldwide. RS has just recently been traced to a defective gene on the X chromosome called MeCP2. It is estimated that the incidence of RS is between 1 in every 10,000 to 15,000 live female births. Features and Characteristics Rett syndrome is often mistaken for autism, cerebral palsy, and mental retardation. However, no other condition has a period of rapid deterioration followed by stabilization and sometimes even improvements in autistic features, eye contact, and stereotypical hand movements. Since there is no form of laboratory testing for RS, diagnostic criteria and exclusionary criteria have been formed for the recognition of the syndrome. The following characteristics must be found in order to receive a diagnosis of RS:
  • Normal development until approximately 6 to 18 months of age Normal head circumference at birth, followed by a slowed growth rate anywhere from 3 months to 4 years of age

71. Autism And Rett Syndrome; The Pevsner Lab
Autism and rett syndrome. Introduction. Autism Society of America. Jypsy s Autism Links. rett syndrome Background. rett syndrome affects girls almost exclusively.
http://pevsnerlab.kennedykrieger.org/autism_rett.htm
Home DRAGON SNOMAD Bioinformatics ... Publications
Autism and Rett Syndrome
Introduction Autism and Rett Syndrome are devastating, lifelong neurological disorders that are classified as pervasive developmental
disorders (sometimes abbreviated PDD). Autism and Rett Syndrome are characterized clinically by severe, pervasive
impairment in communication skills and in reciprocal social interaction skills. Stereotyped behavior and interests are
typical. In many cases, autism and Rett Syndrome are accompanied by mental retardation as well as seizures. These
disorders cause significant hardships for the affected children and adults, as well as their families, schools and
communities. Today, the diagnosis of autism and related pervasive developmental disorders such as Asperger's Syndrome is based
upon clinical criteria. There are no known biological causes. There are very few proven neurochemical, genetic,
neuroanatomical, neurophysiological, structural, metabolic, or other molecular differences between these patients and the
normal population.

72. HHMI News: Rett Syndrome Traced To Defective Gene "Silencer"
rett syndrome Traced to Defective Gene Silencer . Finding that gene is the hardest thing I ve ever worked on, says HHMI investigator Huda Zoghbi.
http://www.hhmi.org/news/zoghbi2.html
RESEARCH NEWS RESEARCH NEWS
GRANT ANNOUNCEMENTS

SCIENCE EDUCATION NEWS

INSTITUTE NEWS
...
Download

this story in Acrobat PDF format.
(requires Acrobat Reader
Rett Syndrome Traced to Defective Gene "Silencer"
"Finding that gene is the hardest thing I've ever worked on," says HHMI investigator Huda Zoghbi. A 14-year search for the cause of a rare genetic disease that strikes young girls has uncovered the first example of a human disease that is linked to a defective gene silencing mechanism. Rett syndrome (RTT) is a neurodevelopmental disorder seen in young girls that causes a sudden and permanent decline in mental capabilities. In 1985, HHMI investigator Huda Zoghbi , who was then a neurology fellow, published a clinical research report on Rett syndrome. Her initial encounter with the disorder had a lasting impact on her career. Shortly after seeing her first RTT patients, Zoghbi decided to change her career plans, switching from clinical medicine to a research position. Shortly after switching to research, she started the long, tedious search for the genetic causes of RTT. "Finding that gene is the hardest thing I've ever worked on," Zoghbi said in an interview. "It's the best case for the rewards of perseverance that I can think of."

73. HHMI News: Researchers Develop Mouse Model Of Rett Syndrome
Researchers Develop Mouse Model of rett syndrome. “As development progresses, what we encounter our experiences may also change how the brain responds.
http://www.hhmi.org/news/zoghbi5.html
RESEARCH NEWS RESEARCH NEWS
GRANT ANNOUNCEMENTS

SCIENCE EDUCATION NEWS

INSTITUTE NEWS
...
HHMI HOME

ALSO OF INTEREST Rett Syndrome Traced to Defective Gene "Silencer" HHMI Bulletin: Huda Zoghbi Profile When the Brain Fails Teasing Out the Early Steps of Neurodegeneration Gene Triggers Formation of Sensory Cells in the Ear ...
Download

this story in Acrobat PDF format.
(requires Acrobat Reader
Researchers Develop Mouse Model of Rett Syndrome
“As development progresses, what we encounter our experiences may also change how the brain responds. This may account for individual variation in disease severity,” said HHMI investigator Huda Zoghbi. By studying gene mutations in patients with the complex set of behavioral and neurological symptoms that accompany Rett syndrome, Howard Hughes Medical Institute investigator Huda Zoghbi and her colleagues at Baylor College of Medicine have designed a mouse model that faithfully recapitulates the disease down to its distinctive hand-wringing behavior. The development of the mouse, reported in the July 18, 2002 issue of the journal

74. Bbc.co.uk - Health - Conditions A-Z Rett Syndrome
AZ Illnesses and Conditions. rett syndrome By Dr Trisha Macnair. rett syndrome is a complex neurological disorder. It is genetic in
http://www.bbc.co.uk/health/conditions/rett_syndrome.shtml
@import url('/includes/tbenh.css') ; Home
TV

Radio

Talk
...
A-Z Index

THURSDAY
3rd June 2004
Text only

BBC Homepage

Health Home

Lifestyle Home
... Conditions QUICK GUIDE A-Z Children's Ailments IN-DEPTH Addictions Allergies Arthritis Asthma ... Help Like this page? Send it to a friend!
A-Z Illnesses and Conditions
Rett Syndrome By Dr Trisha Macnair Rett Syndrome is a complex neurological disorder. It is genetic in origin and predominantly affects girls. Although signs may not be initially obvious, the condition is present at birth and becomes more evident during the second year, following an irreversible course. People with Rett syndrome are profoundly and multiply disabled and totally dependent on others for their needs throughout their lives. Typical signs include: initial normal development followed by stagnation after about 1 year and then regression with loss of early speech and hand movement skills, loss of walking or crawling, development of repetitive hand movements (hand-wringing), a stiff or clumsy gait, breathing problems, EEG (brainwave) abnormalities, and epilepsy (affects over 50%). The gene normally shuts off production of certain proteins in the brain. When faulty, overproduction of the proteins occurs, leading to damage to the nervous system.

75. Rett Syndrome - Medical Dictionary Definitions Of Popular Medical Terms
MedicineNet Home MedTerms medical dictionary AZ List rett syndrome. Advanced Search. rett syndrome is a most unusual disease because ONLY GIRLS have it.
http://www.medterms.com/script/main/art.asp?articlekey=11960

76. Rett Syndrome Is Traced To A Surprising Genetic Culprit
rett syndrome IS TRACED TO A SURPRISING GENETIC CULPRIT. That s why I think that this will probably be the predominant, if not only, gene for rett syndrome. .
http://www.neurologyreviews.com/dec99/nr_dec99_RettSyn.html

Home
Address Change Archives
Return to table of contents
R ETT S YNDROME I S T RACED TO A S URPRISING G ENETIC C ULPRIT
a gene that participates in "silencing" numerous other genes at key points in development. The discovery has immediate implications for the diagnosis of developmentally impaired infants, as well as possible future implications for the development of effective treatments. Rett syndrome was first described in the German literature in 1966 by Dr. Andreas Rett, but received little attention in the United States until a 1983 paper by Dr. Bengt Hagberg and colleagues was published in the Annals of Neurology. The syndrome occurs almost exclusively in females, affecting approximately one of every 10,000 to 15,000 girls born in the world. Infants with Rett syndrome develop normally for the first six to 18 months, then motor skills and speech typically regress; walking is often delayed or accomplished with great difficulty. Perhaps the most striking feature, however, is the near-constant hand-wringing that is typical of the disorder. About 80% of children with Rett syndrome have seizures; also common are breathing irregularities, scoliosis, retarded growth, and EEG abnormalities. The recent research, published in the October issue of

77. Researchers Confirm Novel Form Of The Rett Syndrome Protein
203445-9233 rett syndrome Research Foundation Researchers confirm novel form of the rett syndrome protein. March 22, 2004 – Adrian
http://www.eurekalert.org/pub_releases/2004-03/rsrf-rcn032204.php
Public release date: 22-Mar-2004
Contact: Monica Coenraads
monica@rsrf.org

Rett Syndrome Research Foundation
Researchers confirm novel form of the Rett syndrome protein
March 22, 2004 – Adrian Bird and Skirmantas Kriaucionis of the University of Edinburgh have discovered a novel form of the protein MeCP2. This alternate form, coined MeCP2 alpha, differs from the original only in the first 19 amino acids. Interestingly, Adrian Bird, Director of the Welcome Trust Centre for Cell Biology at Edinburgh University, found that MeCP2 alpha, is ten times more prevalent not only in the brain but also in other tissues. These findings are currently reported online in Nucleic Acids Research. Similar findings were reported yesterday in Nature Genetics online by Berge Minassian, a neurologist and scientist at Toronto's Hospital for Sick Children. Adrian Bird originally cloned the MECP2 gene in 1992 while in Vienna, Austria at the Institute for Molecular Pathology. In October of 1999 Huda Zoghbi of Baylor College of Medicine and the Howard Hughes Medical Institute announced that mutations in the MECP2 gene were the leading cause of Rett Syndrome (RTT). RTT is a severe neurological disorder diagnosed almost exclusively in girls. Children with RTT appear to develop normally until 6 to 18 months of age, when they enter a period of regression, losing speech and motor skills. Most develop repetitive hand movements, irregular breathing patterns, seizures and extreme motor control problems. RTT leaves its victims profoundly disabled, requiring maximum assistance with every aspect of daily living. There is no cure.

78. Study Offers New Insight Into Rett Syndrome
rett syndrome is a major cause of mental retardation in girls. Although Study offers new insight into rett syndrome. Cambridge, Mass. – Rett
http://www.eurekalert.org/pub_releases/2003-10/wifb-son102703.php
Public release date: 30-Oct-2003
Contact: Kelli Whitlock
newsroom@wi.mit.edu

Whitehead Institute for Biomedical Research
Study offers new insight into Rett Syndrome
Cambridge, Mass. – Rett Syndrome is a major cause of mental retardation in girls. Although researchers have identified the protein involved in the disease, its exact role remains a mystery. Now, a group of researchers from Children's Hospital Boston and Whitehead Institute of Biomedical Research have identified the protein's function, a discovery the scientists say could be the first significant advance in Rett Syndrome research in years. The study, reported in this week's issue of the journal Science, describes how the protein in question controls gene expression in normal central nervous system cells. Researchers suspect that mutations in the protein impair its ability to regulate genes during a critical stage of brain development. "We think that this deregulation may be responsible for some of the defects that we see in Rett patients," says Michael Greenberg, director of the Children's Hospital group and a lead author of the study. A neurological disorder causing mental retardation as well as cerebral-palsy and autism-like symptoms, Rett Syndrome affects one out of approximately 15,000 female babies worldwide. Current therapies, including medications that help prevent seizures, treat some of the symptoms but not the disease.

79. SupportPath.com: Rett Syndrome
rett syndrome. rett syndrome is a neurodevelopmental disorder primarily affecting females. None Listed. Clinical Trials Research on rett syndrome
http://www.supportpath.com/sl_r/rett_syndrome.htm
Rett Syndrome
Rett Syndrome is a neurodevelopmental disorder primarily affecting females. Girls with this syndrome may exhibit normal early development until 6-18 months of life. This is followed by loss of muscle tone (one of the first symptoms), autistic-like behaviors, loss of purposeful use of the hands, distinctive hand movements, avoidance of eye contact, breathing dysfunctions, slowed head and brain growth, gait disturbances, and seizures. Its cause is unknown. Other topics of interest on SupportPath.com:
Autism
Seizure Disorders About Us Add-A-Link ... here
Online Communities / Message Boards...
  • None Listed
Online Chats...
Note: Regularly scheduled chats are listed on our NEW Online Events Calendar
Links in this section are primarily to chat rooms open 24/7 which may or may not be moderated.
  • None Listed
Usenet Groups...
Note: Your browser must be properly configured to access Usenet groups from this site.
  • None Listed
Mailing Lists...
  • None Listed
National / International Organizations...

80. ADHD
The Potentially handicapping effects of rett syndrome on the development of a child. The etiology of rett syndrome remains unresolved.
http://www.adhd.com.au/rett.html
The Potentially handicapping effects of Rett syndrome on the development of a child. Kerrin Braithwaite B.App. Sci.; Grad. Dip. Psych.; MAPS
Attempts to explain the pathophysiology of Rett syndrome have raised several possibilities but no conclusive evidence. Several early studies pointed to abnormal dopamine levels (Van Acker, 1991). Lloyd et al, (1981, cited in Van Acker) found some characteristics of Rett syndrome were also characteristic of boys with Lesch-Nyhan, a syndrome where dopamine levels have been shown to have a causal relationship with the behaviour related (Van Acker, 1991). Recent studies however have failed to replicate this finding (Van Acker, 1991).
Due to the progressive nature of the disorder, and the fact that it is preceded by normal pre and post-natal development, Perry (1991) reported that much research has focussed on the likelihood of the syndrome having a metabolic basis. However no consistent evidence for any known such disorder has been found. Hagberg and colleagues (1993) reported that in many cases onset occurs during a respiratory or gastrointestinal viral infection, and suggested that the possibility of the disorder arising through slow viral infection should be considered. Eeg-Olofsson and colleagues (1989, cited in Perry, 1991) suggest from their own and other’s observation of unusually shaped mitochondria in the muscles of individuals with Rett syndrome that "genetically transmitted mitochondrial disease" (p. 283) is the likely underlying mechanism of the syndrome.

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

Page 4     61-80 of 114    Back | 1  | 2  | 3  | 4  | 5  | 6  | Next 20

free hit counter