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Results 401 - 450 of 857
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Hrdlicka Michal - - 2005
The aim of our study was to subcategorize Autistic Spectrum Disorders (ASD) using a multidisciplinary approach. Sixty four autistic patients (mean age 9.4+/-5.6 years) were entered into a cluster analysis. The clustering analysis was based on MRI data. The clusters obtained did not differ significantly in the overall severity of ...
Pfeffer Gerald - - 2005
Antipsychotic-induced akathisia is characterized by subjective and objective motor restlessness, which is observed as a common extrapyramidal side-effect of antipsychotic agents. A patient is described who had antipsychotic-induced akathisia unresponsive to conventional therapy, and who began gabapentin therapy for insomnia. Significant improvement in his akathisia occurred when the gabapentin dose ...
Holme Petter - - 2005
We use real-world contact sequences, time-ordered lists of contacts from one person to another, to study how fast information or disease can spread across network of contacts. Specifically we measure the reachability time--the average shortest time for a series of contacts to spread information between a reachable pair of vertices ...
Scheidegger E Paul - - 2005
Primary cutaneous mucinosis encompasses a wide range of different skin conditions with circumscribed, follicular or diffuse manifestation. For the first time, to our knowledge, we report on the occurrence of so-called "atypical" localized papular mucinosis in the axillary pits of a mother and her (identical) twin daughters presenting as asymptomatic ...
Corby P M A - - 2005
OBJECTIVE: The purpose of this study was to determine whether genetic factors influence variation in salivary levels of the mutans streptococci (MS) in preschool twins. DESIGN: The study population consisted of 48 pairs of monozygotic (MZ) twins and 54 pairs of dizygotic (DZ) twins. Genotyping eight highly polymorphic DNA markers ...
Helling Kai - - 2005
The otolith mass of the saccules and utricles of plaice, Pleuronectes platessa (n = 39) and turbot, Psetta maxima (n = 21) was measured using an electronic microbalance. In the right-eyed plaice, the left utricular otoliths were found to be significantly heavier than the right (p < 0.0001), whereas no ...
Kleintjes Wayne George - - 2005
There is no article in the literature correlating only craniofacial abnormalities in twins. Since 1985 the Tygerberg Craniofacial Unit has treated nine pairs of twins. In this retrospective study, the authors correlate the craniofacial and systemic anomalies with the specific twin type. BACKGROUND: The frequency of human twinning varies from ...
Morelle Willy - - 2005
Oligosaccharides were derivatized by reductive amination using 2-aminobenzamide (2-AB) and analyzed by matrix-assisted laser desorption/ionization two-stage time-of-flight (MALDI-TOF/TOF) tandem mass spectrometry (MS/MS) in the positive ion mode. The major signals were obtained under these conditions from the [M+Na]+ ions for all 2-AB-derivatized oligosaccharides. A systematic study was conducted on a ...
Spaniel Filip - - 2005
T1 and T2 relaxation times were examined in four pairs of monozygotic (MZ) twins discordant and concordant for schizophrenia with low and high genetic loading for the illness and five healthy control MZ twin pairs. Patients with schizophrenia (n = 11) showed significant prolongation in T1 relaxation times in the ...
Padgett Jaye - - 2005
Russian exhibits a rich pattern of phonological vowel reduction, by which some vowel contrasts are neutralized in unstressed syllables. Recent work in phonology suggests a mechanism by which phonetic vowel reduction--compression of the overall vowel space due to target undershoot--might lead to patterns like Russian. Presenting acoustic data from 9 ...
Wolfart Stefan - - 2004
This study aimed to examine whether there exists a gender-dependent correlation between the inverted face shape and that of the upper central incisor as the literature often suggests. Standardized portraits and anterior tooth photographs of 204 dental students were made. Standardized enlargements of facial outlines and of the upper right ...
Lammer Edward J - - 2004
BACKGROUND: Periconceptional supplementation of multivitamins that include folic acid have been shown to prevent several birth defects, including neural tube defects and orofacial clefts. We investigated whether polymorphic variants of fetal acetyl-N-transferase 1 (NAT1), an enzyme involved in the catabolism of folates, differentially interacted with maternal multivitamin use during early ...
Lindemann H-B - - 2004
The shape of a patient's face is commonly used as a reference to select the shape of the maxillary central incisors in edentulous patients. The validity of this relationship has not been proved. The objective of this clinical study was to determine whether a relationship exists between maxillary central incisors ...
Selmi Carlo - - 2004
BACKGROUND & AIMS: There is growing evidence that the interplay of genetic susceptibility and environmental factors leads to primary biliary cirrhosis (PBC). In particular, family members of an infected individual have up to a 100-fold higher risk of developing PBC. Although concordant rates for identical twins in other autoimmune diseases ...
Elizur Shai E - - 2004
Between January 1, 1995 and December 31, 2001, 5,310 cycles were performed in the IVF Unit, Sheba Medical Center, Israel, resulting in 1,066 clinical pregnancies. There was no difference in the rate of pregnancies containing monozygotic twins after zona pellucida micromanipulation procedures (0.9%) compared to conventional insemination (1.0%) (6/677 vs. ...
Remington Gary - - 2004
In treating schizophrenia there has been a shift in focus, with more attention being paid to early intervention based on the notion that effective treatment at this point can improve outcome. Most of this work has centred on pharmacotherapeutic interventions during the first psychotic break. More recently, attention has turned ...
Silva W Andre - - 2004
OBJECTIVE: To evaluate the effect of bladder filling and patient position on the degree of pelvic organ prolapse (of the maximally prolapsed segment). METHODS: Fifty consecutive patients with symptomatic pelvic organ prolapse were evaluated between February 2003 and August 2003. Patients were examined in the supine lithotomy and standing position ...
Kajantie Eero - - 2004
We report on a 23-month-old boy with bilateral cleft lip and palate, marked hypertelorism, frontal bossing and severe bilateral, asymmetric hypoplasia of toes. The mother used bisoprolol, naproxen and sumatriptan for migraine until the fifth postmenstrual week of pregnancy. We suggest that this patient's features represent a previously undescribed entity ...
Paramei Galina V - - 2004
BACKGROUND: The twin method was used to examine the genotype/phenotype relationship in colour vision, by determining concordance in colour perception within pairs of monozygotic (MZ) twins and dizygotic (DZ) twins. For MZ twins, whose photopigments are genetically identical, higher concordance in colour perception was expected; conversely, differences within each MZ ...
Lee Heun H Department of Occupational and Environmental Medicine, College of Medicine, University of Ulsan, - - 2004
This study aimed to investigate the toxic effects of chromium (VI) on the placental function and reproduction in rats. For the study, the placental prolactin-growth hormone (PRL-GH) gene expression, placental trophoblast cell differentiation and reproductive data were analyzed. The pregnancies of F344 Fisher rats were checked by the presence of ...
van Erp Theo G M - - 2004
CONTEXT: The effects of genes and environment on brain abnormalities in schizophrenia remain unclear. OBJECTIVE: To examine the contributions of genes and environment to hippocampal volume reduction in schizophrenia. DESIGN: Population-based twin cohort study. SETTING: Finland. PARTICIPANTS: Seven monozygotic (MZ) twin pairs concordant for schizophrenia and 16 MZ and 32 ...
Lee Jiahn-Te - - 2004
The incidence of trisomy 18 in monozygotic twins is approximately 1 per million. We report a pair of liveborn monozygotic twins with trisomy 18. Both twins had esophageal atresia with tracheoesophageal fistula (type C) and intrauterine growth retardation. Twin A had cleft lip, choanal atresia and perimembranous ventricular septal defect. ...
Wang Jijun - - 2004
The link between P50 suppression and psychometric schizotypy was previously reported in non-clinical English-speaking subjects; however, whether a similar relationship exists within a different ethnic sample is unknown. Furthermore, whether such a relationship can also be accounted for by such basic personality characteristics as extraversion or neuroticism has not yet ...
May Flavia S FS Department of Radiology, Brigham and Women's Hospital, Boston, Massachusetts, - - 2004
Abnormally large cavum septum pellucidum has been reported in posttraumatic stress disorder; however, the origin of this association is uncertain. We utilized magnetic resonance imaging to measure cavum septum pellucidum in pairs of identical twins discordant for combat exposure in Vietnam. Presence of abnormal cavum septum pellucidum was significantly correlated ...
Kates Wendy R - - 2004
OBJECTIVE: The broader autism phenotype includes relatives of individuals with autism who display social and language deficits that are qualitatively similar to those of autism but less severe. In previous studies of monozygotic twins discordant for autism, more than 75% of the twins without autism displayed the broader phenotype. Differences ...
Laursen Maja - - 2004
OBJECTIVE: The purpose of this study was to test a possible genetic component to prolonged gestation. STUDY DESIGN: The gestational duration of single, first pregnancies by both female and male twins was obtained by linking the Danish Twin Registry, The Danish Civil Registration System, and the Danish Medical Birth Register. ...
Compton Michael T - - 2004
Schizophrenia is a serious mental illness that causes major disability and psychosocial impairment. Recent advances in the neurosciences are prompting considerations of schizophrenia from a preventive perspective. An overview of the literature is provided on two important aspects of the development of a prevention orientation in schizophrenia research: elucidation of ...
Hulshoff Pol Hilleke E - - 2004
BACKGROUND: Whole brain tissue volume decreases in schizophrenia have been related to both genetic risk factors and disease-related (possibly nongenetic) factors; however, whether genetic and environmental risk factors in the brains of patients with schizophrenia are differentially reflected in gray or white matter volume change is not known. METHODS: Magnetic ...
Ludeña Eduardo V - - 2004
A reinterpretation of the Boyd-Coulson [R. J. Boyd and C. A. Coulson, J. Phys. B 7, 1805 (1974)] definition of the Fermi hole is presented. Through this reinterpretation, which makes no reference to the hypothetical Hartree level, we are able to show the essentially identical character of the Boyd-Coulson definition ...
Masuzaki Hideaki - - 2004
Conjoined twins discordant for phenotype of cleft lip are reported. One had right-sided cleft lip, while the co-twin had left-sided cleft lip. Both twins had a normal 46,XY karyotype. Genotyping at 50 polymorphic loci revealed that the twins were identical (monozygotic). Our analysis suggests that the laterality of cleft lip ...
Blickstein Isaac - - 2003
This paper reviews several aspects of discordant growth in multiple pregnancies. Discordant growth is not a chance event and therefore several patterns can be discerned. About 75% of twins exhibit < 15% discordance (concordant), 20% are 15-25% (mildly) discordant, and about 5% are more than 25% (severely) discordant. Higher frequencies ...
Haegert D G - - 2003
CD4 T-cells have an important role in the autoimmune response in multiple sclerosis (MS). We investigate the possibility that a shift occurs in the T-cell receptor (TR) repertoire of identical twins discordant for MS. We compare the CDR3 spectratype distributions of 24 different TR V beta (TRBV) segments in naïve ...
Lee David Y-W - - 2003
Two pairs of diastereoisomeric flavonolignans, silybin A, silybin B, isosilybin A, and isosilybin B, were successfully separated from Silybum marianum by sequential silica gel column chromatography, preparative reversed-phase HPLC, and recrystallization. Complete stereochemical assignments at C-2, C-3, C-7', and C-8' of these flavonolignans have been achieved. On the basis of ...
Alikani Mina - - 2003
BACKGROUND: This study attempts to identify risk factors for monozygotic (MZ) twinning following assisted conception. METHODS: Eighty-one MZ twinning pregnancies that occurred over a 7-year period in our IVF/embryo transfer programme were evaluated. These were compared with 4224 non-MZ pregnancies from the same period. RESULTS: The overall incidence of MZ ...
Egan William J - - 2003
Copy toner samples were analyzed using reflection-absorption infrared microscopy (R-A IR). The grouping of copy toners into distinguishable classes achieved by visual comparison and computer-assisted spectral matching was compared to that achieved by multivariate discriminant analysis. For a data set containing spectra of 430 copy toners, 90% (388/430) of the ...
Blanco-Davila Feliciano - - 2003
In Latin American countries, studies on the incidence of cleft lip and palate are not widely available. A 10-year retrospective study was carried out to determine the incidence of cleft lip and palate at the Autonomous University of Nuevo Leon's University Hospital. The study included data from patients who attended ...
Jakobsen Linda P - - 2003
OBJECTIVE: To describe the occurrence of cleft lip with or without cleft palate (CL/P) and isolated cleft palate (CP) in the Faroe Islands and Greenland over a 50-year time period that has included substantial changes in lifestyle. DESIGN: A prevalence study based on patient records obtained from the Institute of ...
Aubert B - - 2003
We present measurements of the branching fraction and CP-violating asymmetries for neutral B decays to D(*+/-)D-/+. The measurement uses a data sample of approximately 88x10(6) Upsilon(4S)-->BBmacr; decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)-e(-) collider. By fully reconstructing the D(*+/-)D-/+ decay products, we measure the branching ...
Kunugi Hiroshi - - 2003
A case is described herein of monozygotic twins discordant for schizophrenia that illustrates possible causal events of prenatal underdevelopment, morphological changes in the brain, poor premorbid functioning, and the development of schizophrenia. The affected twin was born with a birthweight of 1620 g, whereas the unaffected twin weighed 2300 g ...
Svensson Da - - 2003
Evidence of a familial risk factor in cluster headache is accumulating and studies of twin concordance may resolve family resemblance into genetic and environmental influences. The past literature on cluster headache in twins comprises a few case reports of concordant monozygotic pairs. Swedish twin pairs with a diagnosis of cluster ...
Czeizel A E - - 2003
OBJECTIVE: Thiethylperazine is a commonly used anti-emetic drug during pregnancy in Hungary. One experimental study in mice and rats found an increased occurrence of cleft palate after the use of thiethylperazine during pregnancy but the human data of thiethylperazine have not been reported. Thus, the aim of the study was ...
Ono Takashi - - 2003
OBJECTIVE: To investigate the temporospatial pattern of nerve growth factor receptor (NGFR) immunolocalization during human palatal closure. MATERIALS: Human palate and tongue tissues from 33 embryos/fetuses, 9 to 22 weeks of fertilization age. METHODS: Tissues were divided according to developmental stage and palatal development (before, during, and after closure) and ...
Chou Chung T - - 2003
OBJECTIVE: We surveyed B27 and its subtypes in 5 ethnic groups in Taiwan. METHODS: Blood was obtained from 281 Aborigine people of the Atayal tribe (I-Lan), 141 Paiwan (Ping-Ton), 38 Rukai (Ping-Ton), and 40 Yami (Orchid Island), and also 47 B27+ healthy Han Chinese subjects and 82 B27+ Han patients ...
Annett Marian - - 2003
A study of the heritability of lobar brain volumes in twins has introduced a new approach to questions about the genetics of cerebral asymmetry. In addition to the classic comparison between monozygotic (MZ) and dizygotic (DZ) twins, a contrast was made between pairs of two right-handers (RR pairs) and pairs ...
Shankarkumar U - - 2003
HLA-B27 is a serological specificity which encompasses an increasing number of subtypes that show varied racial/ethnic prevalence in the world. Here, data from 5129 Indians (4500 population and caste; 629 tribal) is compiled from the literature. In addition, HLA-B27 subtyping of 58 positive individuals from Maharastra is presented. Analysis revealed ...
Ashrafi Ali Reza - - 2003
Jajcay's studies (1993; 1994) on the automorphism groups of Cayley maps yielded a new product of groups, which he called, rotary product. Using this product, we define a hyperoperation [symbol: see text] on the group Syme(G), the stabilizer of the identity e [symbol: see text] G in the group Sym(G). ...
Christensen Kaare - - 2003
BACKGROUND: Numerous rare genetic conditions are known to influence fecundability in both males and females. It is less clear to what extent more subtle genetic differences influence fecundability on a population level. METHODS: In 1994 a population-based survey was conducted among Danish twins born 1953-1982. Fecundability was assessed as the ...
McIntosh A M - - 2002
BACKGROUND: This study sought to clarify the role of obstetric complications (OCs) and maternal recall bias for patients with first episodes of schizophrenia and those at increased risk of the disorder. METHOD: Subjects at high risk of schizophrenia were compared with people with first-episode schizophrenia and with healthy volunteers. Consenting ...
Anderson John H - - 2002
CONTEXT: Although phenotypic heterogeneity in autosomal dominant spinocerebellar ataxia (SCA) has been explained in part by genotypic heterogeneity, clinical observations suggest the influence of additional factors. OBJECTIVES: To demonstrate, quantitate, and localize physiologic abnormalities attributable to nongenetic factors in the development of hereditary SCA. DESIGN: Quantitative assessments of ocular motor ...
James William H - - 2002
It is well established that the distribution of the combinations of handedness (LL, LR, and RR) in twin pairs is roughly binomial regardless of zygosity or sex. This fact has challenged current genetic models of handedness. We show here that: (a) there must be at least one environmental determinant of ...
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