Turner Syndrome turner syndrome information and resources turner syndrome. turner syndrome is a genetic disease in which all or part of one X chromosome is Picture Of Y Chromosome as a Safe Haven for male Fertility Genes http://www.genomelink.org/turner
Extractions: Turner syndrome is a genetic disease in which all or part of one X chromosome is missing, resulting in X females or partially XX females. It occours in 1 of every 2.000-2.500 females born. The common anomalies of Turner syndrome include short stature, epicanthal folds, low nuchal hair line, shield-like chest, webbed neck, high arched palate, coarctation of the aorta, ventricular septal defect, renal anomalies, pigmented nevi, lymphedema, hypoplastic nails and inverted nipples. Acne Allergy Antibiotics ... Wedding Informational Links Turner Syndrome Research - from Stanford University. Genetic Features of Turner Syndrome - from the National Institute of Child Health and Human Development National Institutes of Health. Chromosome XO syndrome - from National Library of Medicine. Turner syndrome - by Julie Hodson. Health Supervision for Children With Turner Syndrome - from American Academy of Pediatrics. Combination growth hormone and estrogen increase bone mineralization in girls with Turner syndrome - from the United States Department of Agriculture, Agricultural Research Service. Turner's Syndrome Karyotype - from GSLC.
Male Infertility Overview male Infertility Overview. Assessment, Diagnosis, and Treatment syndrome, XX disorder (sex reversal syndrome), XYY syndrome) Noonan's syndrome (male turner's syndrome) http://www.ivf.com/shaban.html
Extractions: Approximately 15% of couples attempting their first pregnancy meet with failure. Most authorities define these patients as primarily infertile if they have been unable to achieve a pregnancy after one year of unprotected intercourse. Conception normally is achieved within twelve months in 80-85% of couples who use no contraceptive measures, and persons presenting after this time should therefore be regarded as possibly infertile and should be evaluated. Data available over the past twenty years reveal that in approximately 30% of cases pathology is found in the man alone, and in another 20% both the man and woman are abnormal. Therefore, the male factor is at least partly responsible in about 50% of infertile couples. MALE REPRODUCTIVE PHYSIOLOGY The Hypothalamic-Pituitary-Gonadal Axis The hypothalamus is the integrative center of the reproductive axis and receives messages from both the central nervous system and the testes to regulate the production and secretion of gonadotropin releasing hormone (GnRH) . Neurotransmitters and neuropeptides have both inhibitory and stipulatory influence on the hypothalamus. The hypothalamus releases GnRH in a pulsatile nature which appears to be essential for stimulating the production and release of both
Discovery Health Turner Syndrome turner syndrome is caused when a fertilized egg is missing one of the sex chromosomes. Oneof these 23 pairs determines whether a person will be a male or a http://health.discovery.com/diseasesandcond/encyclopedia/2748.html
Endocrinology And Turner's Syndrome factors that put a couple at risk of having a daughter with turner syndrome arenot sex is determined by possession of two X chromosomes (XX) and male sex is http://www.endo-society.org/pubrelations/patientInfo/turner.htm
Extractions: Turner syndrome can cause physiologic and psychological problems that can affect normal development and maturation in females, even if it is not usually life-threatening. Effective treatment is available to minimize some of these effects and reduce many of the associated symptoms, if it is started soon enough. It is important to identify those with Turner syndrome early so that treatment can begin and promote normal growth and development as girls enter puberty. What is Turner Syndrome? Turner syndrome occurs in females when one of the X (female) chromosomes is missing or damaged. Typically, females have two X chromosomes (XX). These chromosomes not only determine the sex of a person but also have other influences. Sexual definition affects physiologic growth and development as well psychological development. The most common features of Turner syndrome are short stature and reduced or absent development of the ovaries. As adults, women with this disorder are typically infertile. Other complications of Turner syndrome include defects of the kidneys and/or heart, thyroid disease, arthritis and skeletal disorders, and development of type 2 diabetes. As children, the onset of puberty is delayed if the disorder has not been identified and treatment begun. Such delays in sexual development may lead to poor social development and low self esteem. In addition, some girls may experience learning difficulties, particularly in the subject of mathematics. Problems such as underactive thyroid glands, abnormal liver function tests, a propensity to ear infections and hearing deficits, can also be seen. Symptoms may vary widely among those affected.
Extractions: (advertisement) Synonyms, Key Words, and Related Terms: intersex disorders, germinoma, seminoma, gonadal dysgenesis, complete androgen insensitivity, male pseudohermaphrodites, male pseudohermaphroditism, male pseudohermaphrodism, mixed gonadal dysgenesis, Turner syndrome, Turners syndrome, germ cell tumors Background: In 1953, Scully first described a unique gonadal neoplasm that strongly resembled a normally developing gonad and subsequently named the neoplasm gonadoblastoma. Gonadoblastoma is a rare benign tumor that has the potential for malignant transformation and affects a subset of patients with intersex disorders. The select intersex syndromes associated with a clear risk of developing gonadoblastoma are (1) complete androgen insensitivity/male pseudohermaphroditism (46,XY), (2) mixed gonadal dysgenesis (45,X/46,XY), and (3) a subset of patients with Turner syndrome (45,XO). The 2 essential findings that predispose these abnormal gonads to undergo neoplastic transformation into gonadoblastoma are (1) the karyotype has either macroscopic or molecular evidence of a Y chromosome and (2) the gonads nearly always are located intra-abdominally. Histologically, the following 2 distinct cell types characterize these tumors: (1) large germ cells (similar to dysgerminoma and seminoma) and (2) small cells, which resemble immature Sertoli or granulosa cells. Additionally, in two thirds of patients, Leydig-type cells are found in the stromal component of the tumor and are thought to be responsible for frequent virilizing features in these patients. While gonadoblastoma has normal germinal and stromal characteristics, some of the germ cells are large and have numerous mitotic figures that resemble classic testicular seminoma. In fact, as these cells overgrow the surrounding stroma, the tumor gains the characteristics of a more aggressive lesion and acquires the potential for metastatic spread.
Noonan Syndrome Research Guide to Internet References (female pseudoturner syndrome; male turnersyndrome; turner phenotype with normal chromosomes; turner-like syndrome). P A. http://www.icongrouponline.com/health/Noonan_Syndrome_Ph.html
Extractions: E B O O K Electronic File * E-Book version sent via e-mail in 2 business days Electronic File *E-Book version sent via e-mail in 2 business days Pages Price $34.95(USD) ISBN Published Synopsis In March 2001, the National Institutes of Health issued the following warning: "The number of Web sites offering health-related resources grows every day. Many sites provide valuable information, while others may have information that is unreliable or misleading." Furthermore, because of the rapid increase in Internet-based information, many hours can be wasted searching, selecting, and printing. Since only the smallest fraction of information dealing with Noonan syndrome is indexed in search engines, such as www.google.com or others, a non-systematic approach to Internet research can be not only time consuming, but also incomplete. This book was created for medical professionals, students, and members of the general public who want to conduct medical research using the most advanced tools available and spending the least amount of time doing so. Related Conditions/Synonyms female pseudo-Turner syndrome; male Turner syndrome; turner phenotype with normal chromosomes; Turner-like syndrome
HGF - Turner Syndrome turner syndrome is a genetic disorder that results from an abnormality of a chromosome Y).The sex chromosomes determine whether an individual is male or female http://www.hgfound.org/turner.html
Extractions: Note: The hardcopy of the booklet contains additional diagrams and photos. INTRODUCTION There are many possible reasons why a child may grow slowly, including: hereditary factors (short parents), diseases affecting the kidneys; heart, lungs or intestines; hormone imbalances; severe stress or emotional deprivation; infections in the womb before birth; bone diseases; and genetic or chromosomal abnormalities. The purpose of this booklet is to examine one of the common genetic disorders associated with short stature. In 1938, Dr. Henry Turner recognized a pattern of short stature and incomplete sexual maturation in otherwise normal females. The common name for this condition is Turner syndrome, after Dr. Turner. A syndrome is a set of features often found in association with each other and believed to stem from the same cause. Turner syndrome is a genetic disorder that results from an abnormality of a chromosome. Chromosomes are thin strands of material found in the nucleus of each cell. They contain the genes that determine each person's characteristics. Every individual has 22 pairs of chromosomes and 1 pair of sex chromosomes (called X and Y). The sex chromosomes determine whether an individual is male or female; they influence height as well as development of sexual organs. A female ordinarily has 2 X chromosomes, while a male has one X and one Y chromosome.
Turner Syndrome Clinical Trials Research Provides Hope for turner Girls turner syndrome is one of the few pairs ofchromosomes the sex chromosomes - determines whether you are male (XY) or http://www.turner-syndrome-clinical-trials.com/
Extractions: Turner Syndrome is one of the few genetic diseases that affects only females. Humans have 23 pairs of chromosomes, one set from each parent. One of these pairs of chromosomes - the sex chromosomes - determines whether you are male (XY) or female (XX). In Turner's, there is a total or partial loss of one of the sex chromosomes. Because a Y-chromosome cannot function on its own, males lacking a sex chromosome are not produced. The X-chromosome can survive on its own, however, and the result is a girl with Turner Syndrome (XO). Determining the cause of the condition was due to extensive research, and the numerous girls and women who participated in early Turner Syndrome clinical trials. Genetic research did not stop there, however. Today, the goal is to identify the genes responsible for the medical problems associated with the disease. These include a webbed neck, short stature, lack of sexual development, non-verbal learning disabilities, heart and kidney defects and, in adult women, high blood pressure, diabetes and osteoporosis. Research also evaluates the effects of drugs, including hormones, on these conditions. One of the most common motives for participating in a Turner Syndrome clinical trial is gaining access to new treatments. Of course, the possibility of being in the group using a placebo may appear to be of little immediate benefit. However, the advice from experts on effectively coping with the disease can be invaluable. In addition, participants benefit from the free examinations and assessments associated with the study.
Turner Syndrome - Wikipedia, The Free Encyclopedia the presence of a Xchromosome paired with a Y-chromosome will determine male development. Asa chromosomal condition, there is no cure for turner syndrome. http://en.wikipedia.org/wiki/Turner_syndrome
Extractions: Turner syndrome is a human genetic abnormality , caused by a nondisjunction in the sex chromosomes that occur to females (1 out of every 2,500 births). Instead of the normal XX or XY sex chromosomes, only a single X chromosome is present. In Turner syndrome, female sexual characteristics are present but underdeveloped. People with Turner syndrome often have a short stature, webbed neck , low hairline, abnormal eye features and bone development and a "caved-in" appearance to the chest. Turner syndrome is a disorder caused by the loss of genetic material from one of the sex chromosomes. Humans normally have a total of 46 chromosomes (which are tiny, DNA -containing elements) that are present in every cell of the body. DNA encodes genes , which specify all the proteins that make up the body and control its functions. In humans, there are 23 matched pairs of chromosomes in every cell. Each cell contains 22 pairs of chromosomes called autosomes that are the same in males and females. The remaining pair of chromosomes, the X- and Y-chromosomes, are not shaped similarly, and thus are not matched in the same way as the autosomes. The X- and Y-chromosomes are called sex chromosomes. They are responsible for the difference in development between males and females. A Y-chromosome contains genes responsible for
Extractions: Dictionaries: General Computing Medical Legal Encyclopedia Word: Word Starts with Ends with Definition Turner syndrome is a human genetic abnormality, caused by a defect in the sex chromosomes A sex-determination system is a biological system that determines the development of sexual characteristics in an organism. Most common sex-determination systems in animals involve a genetic mechanism based on the chromosomes of that organism. However, other systems can involve other variables such as temperature. The details of some sex-determination systems are not yet fully understood. Click the link for more information. that occur to females (1 out of every 2,500 births). Instead of the normal XX or XY sex chromosomes, only a single X chromosome is present. In Turner syndrome, female sexual characteristics are present but underdeveloped. People with Turner syndrome often have a short stature, webbed neck A webbed neck is a description of a skin fold that runs along the sides of the neck down to the shoulders. There are many variants. It is a feature of Turner syndrome and Noonan's syndrome.
Disease Directory : Genetic Disorders : Noonan Syndrome English Noonan syndrome, turner s syndrome, male - male turner s syndrome -syndrome, male turner s - syndrome, Noonan - turner syndrome, male - turners; http://www.diseasedirectory.net/Genetic_Disorders/Noonan_Syndrome/default.aspx
Extractions: Ablepharon-Macrostomia Syndrome ... Genetic Disorders : Noonan Syndrome Archives of NOONAN-SYNDROME@HOME.EASE.LSOFT.COM - Management Help Log off Archive Search. Archives of NOONAN-SYNDROME@HOME.EASE.LSOFT.COM The Noonans Syndrome Support Group, Inc. Birth Defects Foundation: Noonan Syndrome - History of the Foundation's involvement with Noonan's. Printable booklet and newsletter. eMedicine - Noonan Syndrome : Article by Jennifer Ibrahim, MD - Thorough summary of history, diagnosis, and treatment. Founder of The Noonan Syndrome Support Group, Inc. - Founder of The Noonan Syndrome Support Group, Inc. Two years ago the Alliance of Genetic Disorders asked me to become a support group for Noonan Syndrome. Health Information Resource Database: Noonan Syndrome Support ... - Noonan Syndrome Support Group, Inc. Noonan Syndrome News, quarterly newsletter; Members have access to the most recent articles published on Noonan Syndrome. HONselect - Noonan Syndrome - English: Noonan Syndrome, - Turner's Syndrome, Male - Male Turner's Syndrome - Syndrome, Male Turner's - Syndrome, Noonan - Turner Syndrome, Male - Turners National Library of Medicine - Includes the alternate names, a summary and a list of major features for Noonan syndrome.
HONselect - Noonan Syndrome English Noonan syndrome, turner s syndrome, male - male turner s syndrome -syndrome, male turner s - syndrome, Noonan - turner syndrome, male - turners http://www.hon.ch/HONselect/RareDiseases/C05.660.207.690.html
Genetics Of Turner S Syndrome cells. So, they have characteristic male cells (those which are 46,XY)but they also have typical turner syndrome cells (45,X). http://personal.telefonica.terra.es/web/sindromedeturner/egenetica.html
Extractions: 1. THE DOCTOR HAS TOLD ME MY DAUGHTER HAS TURNER SYNDROME, BUT, WHAT IS IT? Turner syndrome consists on the total or partial loss of one chromosome X. This means that instead of two sexual chromosomes these girls have only one chromosome X, at least in a part of their cells. But, generally, having a unique chromosome X doesnt provoke severe alterations neither physical nor mental. A Turner girl is a normal girl but a bit shorter, with growth problems. This syndrome has nothing to do neither with Down syndrome nor with other syndromes. If we compare a girl or a boy with down syndrome to any man or woman with Turner, we can observe they have a chromosome 21 more and Turner girls have a chromosome X less. That is the only similarity between them, both syndromes have a chromosomal abnormality but no more. Karyotype 46,XX Karyotype 46,XY Karyotype 45,X 2. DOES TURNER SYNDROME EXIST IN BOYS We generally can say that, except in rare occasions, Turner syndrome does only affect women. But we can t say without doubts it doesnt exist in men. The exception is found in boys who combine 45,X cells and 46,XY cells. So, they have characteristic male cells (those which are 46,XY) but they also have typical Turner syndrome cells (45,X). Depending on the embryo time when 45,X cells have appeared, on the kind of organ affected by the mentioned cells and on the chromosome Y being altered or not, the resultant child can be a boy or a girl both with the characteristic features of the syndrome.
Turner S Syndrome The genes which are responsible of the development of the male sexual features arelocated in the chromosome Y. However, girls with turner S syndrome have in a http://personal.telefonica.terra.es/web/sindromedeturner/eintroduccion.html
Extractions: In 1938, Henry Turner described it for the first time in the journal Endocrinology . It was a group of 7 women between 15 and 23 years old. Those women showed a set of physical alteration and made him group them together in a new syndrome called TURNER'S SYNDROME. There were three most typical features described by Henry Turner in those seven women: Infantile sexuality, Pterigium colli and elbow malformation or cubitus valgus These three features among others are still a reference for every doctor or scientist to describe TURNER'S SYNDROME. Sixty-three years later we all know that this syndrome is relatively frequent. It appears in one of every 2500 newborn girls, consequently in approximately one of every 5000 births and in one of every 15 spontaneous abortions. Nowadays, we also know that this syndrome has a well-defined chromosomal base. In 1959 Ford and col., made the first chromosomal analysis to women with Turner's syndrome, they found they all showed a single X chromosome instead of two. It was proved that the TURNER'S SYNDROME was the result of a total or partial absence of the second sexual chromosome in human being. All human beings have 46 chromosomes in our cells, 44 of them are shared by men and women, these are called AUTOSOMES. The other two are called SEXUAL, they are chromosome X and chromosome Y. Except in rare occasions, women have two chromosomes X (we are XX) and men have a chromosome X and a chromosome Y (they are XY). The genes which are responsible of the development of the male sexual features are located in the chromosome Y. However, girls with TURNER'S SYNDROME have in a part of their cells a unique Chromosome X instead of two (they have totally or partially lost the second sexual chromosome) that is why it is said they are 45,X instead of 46,XX.
Introduction: Turner Syndrome - WrongDiagnosis.com turner syndrome Rare chromosomal genetic syndrome with one X chromosome andno second sex chromosome (X or Y). People are female as there is no male Y http://www.wrongdiagnosis.com/t/turner_syndrome/intro.htm
Turner's Syndrome turner s syndrome A relatively uncommon human sexchromosome disorder. ovum, resultingin a female that has only one X chromosome, producing a male body type http://www.essayworld.com/essays/health/355.shtml
Extractions: Brandi, What you describe can be either Turner's syndrome or Noonan's syndrome. Beginning at the beginning, such an abnormality is technically called ambiguous genitalia (or atypical genitalia ). Of course, this is classified as a birth defect (or birth variation) of the sex organs that makes it unclear whether an affected newborn is a girl or boy. This condition occurs about once in every 4,500 births. The baby seems to have a mixture of both female and male genitalia. For example, they may have both a vulva and testicles. Associated intersex conditions for male babies include hypospadias , where the urethral opening is located in an unusual position such as the underside of the penis. The causes of ambiguous genitalia include genetic variations, hormonal imbalances and malformations of the fetal tissues that are supposed to evolve into genitals. Tests (including ultrasound, x-rays and blood tests) must be done before the baby's sex can be positively identified. Mild forms of ambiguous genitalia may be characterised by a large (penis-like) clitoris in baby girls or undescended testicles in boys. The latter seems to be the condition in which your question was asked.
Re: Is Turner Syndrome Noticeable At Birth? turner syndrome is a genetic disorder that results from an abnormality of a chromosome. TheX and Y chromosomes determine that an individual is male or female http://www.madsci.org/posts/archives/Jun2003/1054852132.Ge.r.html
Extractions: The short answer to this question is YES maybe. Some girls with Turner syndrome have excess skin folds around the neck and puffy hands and feet at birth. But this puffiness often disappears during infancy and the extra neck skin becomes less noticeable. So then these possible signs at birth are not conclusive. But genetic analysis is most often conclusive (more about this below). Moreover, aside from Turner syndrome, there are many causes for a child growing slowly. These include: hereditary factors (naturally short parents and grandparents), diseases affecting the kidneys; heart, lungs or intestines; hormone imbalances; severe stress or emotional deprivation and poor nutrition; infections in the womb before birth; bone diseases; and a variety of genetic or chromosomal abnormalities. Chromosomal abnormalities cause Turner syndrome. In 1938
Noonan Syndrome Noonan syndrome. turner syndrome, male; turner s syndrome, male; maleturner syndrome; male turner s syndrome; turners syndrome, male. http://medical.webends.com/kw/Noonan Syndrome
Extractions: WWW Medical.WebEnds.com A multifaceted disorder that is characterized by short stature, webbed neck, ptosis, skeletal malformations, hypertelorism , hormonal imbalance, CRYPTORCHIDISM , multiple cardiac abnormalities (most commonly including PULMONARY VALVE STENOSIS), and some degree of MENTAL RETARDATION . The phenotype resembles that of TURNER SYNDROME ; however, Noonan syndrome occurs in both males and females with a normal se x chromosome constitution (46,XX and 46,XY). Nevertheless, familial studies suggest that the trait is inherited as an autosomal dominant.
