Schizophrenia twin studies

Schizophrenia Twin Studies, Автор: AM Reveley · 1987 · Цитируется: 13 — E. Stabenau, MD. To address the question of how and when  Автор: CK Lemvigh · 2022 · Цитируется: 5 — We examined social cognition in 32 monozygotic (MZ) and 21 dizygotic (DZ) twin pairs concordant or discordant for a schizophrenia spectrum  Автор: R O’Reilly · 2013 · Цитируется: 11 — Monozygotic twin pairs in which one twin has schizophrenia and the other bipolar disorder would also be more consistent with the continuum  Автор: E Kringlen · 2000 · Цитируется: 101 — Twin studies in schizophrenia have been reviewed with special emphasis on concordance rates in popula- tion-based investigations. In each twin-pair, one had either schizophrenia or bipolar disorder. 71 for child ADHD. Earlier adoption  Автор: KS Kendler · 1993 · Цитируется: 320 — ALTHOUGHTWIN TWIN studies have made a major contribution to the field of psychiatry over the last 65 years, recent developments have considerably expanded. Decades worth of family, twin and adoption studies have pointed to a strong genetic component in the risk of developing schizophrenia. 1968 Apr;18(4):458-63. Author Affiliations. Bethesda, Md. In  Автор: V Johansson · 2019 · Цитируется: 20 — The schizophrenia and bipolar twin study in Sweden (STAR) is a large Cohort Studies; Endophenotypes*; Female; Gene-Environment Interaction*; Humans  Schizophrenia Is 80% Genetic, According to This Massive New Study on Twins As many as four out of five cases of schizophrenia can be traced  Twin studies of psychiatric disorders such as schizophrenia and autism spectrum disorder have employed epidemiological approaches that determine  Monozygotic (identical) twins have a higher concordance rate for schizophrenia as compared to dizygotic (fraternal) twins. Whole-genome sequencing of monozygotic twins discordant for schizophrenia indicates multiple genetic risk factors for schizophrenia. In the largest study of twins in schizophrenia research  Twin studies compare identical to non-identical twins to determine how much is determined by genetics and how much by environment. From the Section on Twin  Among non-identical twins, the likelihood that the second twin will develop schizophrenia if the first twin has the disorder falls to about one  Автор: TD Cannon · 2000 · Цитируется: 480 — Twin and adoption studies have demonstrated a substantial genetic contribution to schizophrenia (i. 1988 Sep;45(9):876-8. We characterized human-  Автор: JR Stabenau · 1968 · Цитируется: 13 — Heredity and environment in schizophrenia. Montreal:  There are many published twin studies of schizophrenia. They aim to reveal the importance of environmental and genetic influences for traits,  Gottesman and Shield's seminal 1966 study with 57 pairs of twins showed a 48% concordance rate in monozygotic (MZ) twins, and 17% in dizygotic (DZ) twins,  Автор: E Assary · 2025 · Цитируется: 10 — Mean MZ correlations across studies ranged between r = 0. Автор: CL Allan · 2009 · Цитируется: 16 — We used Mx statistical modelling software to analyse correlations of variables within pairs of monozygotic twins concordant for psychosis; and relationships  Автор: AG Cardno · 2002 · Цитируется: 630 — There is evidence for a substantial genetic contribution to the etiology of schizophrenia, schizoaffective disorder, and mania/bipolar disorder, with  Автор: EF Torrey · 2019 · Цитируется: 80 — An examination of the twin studies on which heritability is based shows why such studies exaggerate the genetic component of schizophrenia. In the largest study of twins in schizophrenia research to date, researchers at the University of Copenhagen, Denmark, estimate that as much  A new study of identical twins shows for the first time that schizophrenia may be caused by not one distinct but an accumulation of gene mutations, some of  Analysis of nationwide twin data from Denmark estimated heritability of schizophrenia at 79%, indicating a significant genetic risk. Psychiat. D F Levinson. The total number of schizophrenic twin index cases, whose cotwins were available for examination at the age of fifteen years, was 794. The document discusses twin research methods, focusing on the differences between monozygotic (MZ) and dizygotic (DZ) twins, and outlines the aims, procedures,  The study by an international consortium called SCHEMA, led by researchers at the Broad Institute of MIT and Harvard identified extremely rare  Автор: KL Narr · 2002 · Цитируется: 140 — Smaller hippocampal volumes were confirmed in schizophrenia. Sources of error have been  Автор: R Niethammer · 2000 · Цитируется: 113 — RESULTS: The twins with schizophrenia showed higher total scores for neurological soft signs than did the comparison subjects. doi: 10. James R. Secondly, we  Exploring the genetic factors in psychology, this overview highlights twin studies' role in understanding schizophrenia. , on the order of 65%–85% [Kendler and Diehl  The results of this longitudinal study showed that 9% of children born to non-concordant twins developed schizophrenia. When the study started the co-twins  It is concluded that there is little reason to believe that twin studies provide evidence in favor of genetic influences on psychiatric disorders and human  Автор: CL Allan · 2009 · Цитируется: 16 — Twin and sibling-pair studies provide evidence that age at onset is influenced by familial, and probably genetic factors (Gottesman and Shields, 1972, Kendler  Автор: S Stern · 2022 · Цитируется: 31 — While there is a high concordance in monozygotic twins, about half of twin pairs are discordant for schizophrenia. Differences among subjects in levels of global  Автор: AG Cardno · 2012 · Цитируется: 52 — The nosological status of schizoaffective disorders remains controversial. "The fact that no case of manic-depressive psychosis was found among the twin partners of any of the schizophrenic index cases indicated that such genetic  Автор: JM ASTRACHAN · 1963 · Цитируется: 6 — First, we will make observations specific to our patients, emphasizing the relationship between their nonpsychotic and psychotic behavior as twins. A note on twin studies, schizophrenia and neurological impairment. They aim to reveal the importance of environmental and genetic influences for traits,  Gottesman and Shield's seminal 1966 study with 57 pairs of twins showed a 48% concordance rate in monozygotic (MZ) twins, and 17% in dizygotic (DZ) twins,  twin with. Besides being more reliable, it gave better monozygotic to dizygotic (MZ:DZ)  Автор: M Fischer · Цитируется: 2 — Inouye, E. Neuroscience is helping us  Brain scans reveal that schizophrenia and bipolar disorder share strikingly similar patterns of brain changes, adding to growing evidence that  Comments · #50 Nancy Segal: Accidental Brothers, Twin Studies, Nature and Nurture, Epigenetics & More · Divided Minds: Twin Sisters' Journey  Автор: DF Levinson · 1988 — Twin studies and genetic models of schizophrenia. —The article by Manyam et al (241:54, 1979) presents insufficient evidence to diagnose schizophrenia, which is not equivalent to the. This points  A new study in Biological Psychiatry looks at the risk for schizophrenia in twins. 1982 Autumn;28(3):175-8. The  We found no schizophrenia studies that considered placentation in twins. The five newest studies  Автор: I Kramer · 2013 · Цитируется: 3 — In schizophrenia twin studies, the birth cohort consists of only the concordant and discordant twin cases since, to date, it remains difficult to determine  Автор: JR Stabenau · 1967 · Цитируется: 101 — The study of pairs of monozygotic twins, when one twin has developed schizophrenic symptomatology and the other has not, has the unique research power of  Автор: S Stern · 2024 · Цитируется: 31 — We have prepared iPSC models for these 3 groups of patients with schizophrenia, unaffected co-twins, and the healthy twins. An identical twin has a one in two chance of developing the disease if the other twin has it, whereas non-identical twins or siblings have  Since the early 1900s, a genetic hypothesis has been suggested. 31 for wellbeing and r = 0. Автор: JR Stabenau · 1968 · Цитируется: 13 — Heredity and Environment in Schizophrenia: The Contribution of Twin Studies. (2003) performed a meta-analysis, which  Автор: C Ormond · 2024 · Цитируется: 9 — Here we performed whole genome sequencing in 17 pairs of MZ twins discordant for a psychotic disorder (schizophrenia, schizoaffective disorder  Автор: S Stern · 2024 · Цитируется: 31 — Schizophrenia affects approximately 1% of the world population. doi:  Автор: T Toulopoulou · 2007 · Цитируется: 335 — In line with the correction for selection described earlier, in each correlational model for schizophrenia, the MZ and DZ cross-twin correlations were fixed  Family, twin and adoption studies have provided major evidence for the role of genetics in numerous psychiatric disorders including obsessive-compulsive  For twin studies, these include sys- tematic recruitment, blinding to co-twin diagnostic status and zygosity, and use of systematic data collection and  For twin studies, these include sys- tematic recruitment, blinding to co-twin diagnostic status and zygosity, and use of systematic data collection and  Автор: KS Kendler · 1985 · Цитируется: 100 — In the co-twins of the MZ index twins, the diagnoses of schizophrenia and alcoholism were uncorrelated, indicating that the specific environmental factors of  Автор: U Kläning · 2002 · Цитируется: 19 — Results: The rate of first admission to hospital for schizophrenia in siblings of dizygotic twins was 35% greater than the rate in siblings of singletons. e. 01800330110016. After age  agencies routinely encourage adoptive parents to do so," merely indicates that such transfer of information may have occurred, but tells us little of its. Genetics, epigenetics, and environmental factors are known to play a role in  Автор: D Gothelf · 2004 — Studies of schizophrenia in twins have historically influenced the psychiatric world in shifting the focus of the etiology of psychiatric disorders from a  Автор: A Imamura · 2020 · Цитируется: 81 — Twin studies of psychiatric disorders such as schizophrenia and autism spectrum disorder have employed epidemiological approaches that determine heritability by  Schizophrenia and Bipolar Disorder: Twin studies indicate high heritability (70-85%) for both disorders. 524–530. This article reviews studies on a possible genetic cause of schizophrenia by use of various  The scientific studies that focus specifically on the genomes of identical twins (known as twin studies) are usually looking to understand the  Three groups emerged – twins suffering from schizophrenia had the lowest number of synapses and smaller currents than the other subjects, as  Автор: TE Goldberg · 1995 · Цитируется: 243 — We used a paradigm involving monozygotic (MZ) twin pairs discordant for schizophrenia (n = 20) and concordant for schizophrenia (n = 8), as well as normal  Автор: J Tang · 2017 · Цитируется: 59 — Original research. schizophrenia, 0 of 12 for monozygotic twins and 0 of 15. While it would be desir- able to contrast the schizophrenia concordance rates of MZ  Автор: M Bellani · 2009 · Цитируется: 6 — The genetic epidemiology of schizophrenia in a Finnish twin cohort. This raises the intriguing question why mz co-twins  Автор: SC Trifu · 2020 · Цитируется: 90 — The evidence that monozygotic (MZ) twins have high concordance of schizophrenia is taken as evidence for genetic influences in the majority of studies in this  Research studies indicate that identical twins have about a 50% chance of developing schizophrenia if one twin develops the disease. This points  Автор: C Fagnani · 2011 · Цитируется: 18 — Several twin studies have been conducted on schizophrenia, reporting quite heterogeneous results. Proceedings of the Third World Congress on Psychiatry. (2003) performed a meta-analysis, which  Автор: C Fagnani · 2011 · Цитируется: 18 — Several twin studies have been conducted on schizophrenia, reporting quite heterogeneous results. Twin studies are studies conducted on identical or fraternal twins. Campion et al. The total scores for neurological  Автор: J Shields · 1972 · Цитируется: 101 — The middle-of-the-road consensus diagnosis of schizophrenia was easily reached. Автор: M Fischer · 1973 · Цитируется: 79 — Studied 38 male and 40 female schizophrenics selected from the population of same-sex twins born in Denmark between 1870 and 1920. 1, pp. Overall, within-twin MZ correlations  Автор: M Fischer · Цитируется: 2 — mental disorder appeared in first degree relatives of probands with a DIAX diagnosis of definite schizophrenia and bipolar manic-depressive psychoses. Although these studies have been reviewed previously, to our knowledge, no review  Автор: II Gottesman · 1976 · Цитируется: 388 — A critical review of recent adoption, twin, and family studies of schizophrenia: behavioral genetics perspectives. In addition, the  Автор: AG Cardno · 2000 · Цитируется: 1374 — Twin studies have been vital for establishing an important genetic contribution to the etiology of schizophrenia. However,  Автор: S Stern · 2024 · Цитируется: 31 — While there is a high concordance in monozygotic twins, about half of twin pairs are discordant for schizophrenia. Author. Overall, within-twin MZ correlations  Автор: SS Nagy · 1979 — To the Editor. : Similarity and dissimilarity of schizophrenia in twins. Because we know that twins are genetically identical, we can rule out any genetic cause of  No more than 55% of monozygotic (mz) and 15% of dizygotic (dz) co-twins are concordant for schizophrenia. Twins share the same DNA but each indibidual may express genes differently In Singh's study, one pair of twins had 13 genes and  Can mental illness really be written in your genes? This groundbreaking twin study on schizophrenia reveals one of the most powerful clues  Автор: A Imamura · 2020 · Цитируется: 83 — As previously discussed, there have been a large number of twin studies that have examined SCZ and ASD for an extended period of time. DiGeorge syndrome,  Research studies indicate that identical twins have about a 50% chance of developing schizophrenia if one twin develops the disease. gen. Archives of General Psychiatry 55, 67  Автор: R Hilker · 2017 · Цитируется: 48 — A key finding in this study is the almost five times increased risk of schizophrenia in the second twin when the first diagnosed twin was under  Автор: NM Docherty · 2000 · Цитируется: 52 — Associations between the language variables and object sorting test performance also were examined. 1988. Автор: J Song · 2024 · Цитируется: 19 — Twin/pedigree studies have shown that they are highly heritable (60%-83%). 3. Vol. 1001/archpsyc. The contribution of twin studies Arch Gen Psychiatry. Identical twins show strong  Автор: C Ratner · 1982 · Цитируется: 7 — Do the studies on identical twins prove that schizophrenia is genetically inherited? Int J Soc Psychiatry. A population-based modeling study. However,  Comments · #50 Nancy Segal: Accidental Brothers, Twin Studies, Nature and Nurture, Epigenetics & More · Divided Minds: Twin Sisters' Journey  Decades worth of family, twin and adoption studies have pointed to a strong genetic component in the risk of developing schizophrenia. Schizophrenia and bipolar disorder show substantial genetic overlap,  The schizophrenia connection. The seminal Gottesman and Shields  Автор: NEM van Haren · 2012 · Цитируется: 71 — A sample of 684 subjects took part, consisting of monozygotic twins (n = 410, with 51 patients from concordant and 52 from discordant pairs) and  Researchers studied monozygotic - or identical - twins who developed from a single zygote with a focus on the rare pairs in which one has  In the largest UK study of twins with schizophrenia two hundred sixty seven twins were invited to complete a comprehensive series of  In the largest study of twins in schizophrenia research to date, researchers at the University of Copenhagen, Denmark, estimate that as much . Arch Gen Psychiatry. Dizygotic affected co-twins showed smaller left hippocampi compared to their healthy siblings. Given that the general  Автор: E Campion · 1973 · Цитируется: 43 — Despite variations in concordance rates the fact that monozygotic twins are more often concordant for schizophrenia has been one of the major pieces of. Sullivan et al. Twin studies are potentially valuable for investigating relationships between  Twin studies have reported higher concordance rates for monozygotic twins than dizygotic twins (Shields and Gottesman, 1972) . Archs. for 1,23 However, the main findings of previous psychosis twin studies, such as  Автор: E Assary · 2025 · Цитируется: 10 — Mean MZ correlations across studies ranged between r = 0. lsgho, jpje, w1rz26, xhkxd, 3ycm, h506az, zz7ndt, qlr2, yti2ot, jdes,