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Boo Johansson

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Chandra A Reynolds; Loryana Vie; Catalina Zavala; Jonathan A Prince; Margaret Gatz; Erik Ingelsson; Boo Johansson; Bo Malmberg; Nancy L Pedersen
Sortilin receptor 1 predicts longitudinal cognitive change.
Andrea M Piccinin; Chandra A Reynolds; Ingmar Skoog; Avron Spiro; John M Starr; Valgeir Thorvaldsson; Sean Clouston; Ian J Deary; Dorly J H Deeg; Boo Johansson; Andrew Mackinnon; Graciela Muniz-Terrera; Scott Hofer
Coordinated Analysis of Age, Sex, and Education Effects on Change in MMSE Scores.
Taina Guldberg-Kjär; Sally Sehlin; Boo Johansson
ADHD symptoms across the lifespan in a population-based Swedish sample aged 65 to 80.

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2013: Chandra A Reynolds; Loryana Vie; Catalina Zavala; Jonathan A Prince; Margaret Gatz; Erik Ingelsson; Boo Johansson; Bo Malmberg; Nancy L Pedersen
Sortilin receptor 1 predicts longitudinal cognitive change.
Neurobiology of aging 2013;34(6):1710.e11-8.
2013: Andrea M Piccinin; Chandra A Reynolds; Ingmar Skoog; Avron Spiro; John M Starr; Valgeir Thorvaldsson; Sean Clouston; Ian J Deary; Dorly J H Deeg; Boo Johansson; Andrew Mackinnon; Graciela Muniz-Terrera; Scott Hofer
Coordinated Analysis of Age, Sex, and Education Effects on Change in MMSE Scores.
The journals of gerontology. Series B, Psychological sciences and social sciences 2013;68(3):374-90.
2013: Taina Guldberg-Kjär; Sally Sehlin; Boo Johansson
ADHD symptoms across the lifespan in a population-based Swedish sample aged 65 to 80.
International psychogeriatrics / IPA 2013;25(4):667-75.
2013: Marie Eckerström; Mattias Göthlin; Boo Johansson; Sindre Rolstad; Johanna Skoogh; Gunnar Steineck; Anders Wallin
Sahlgrenska Academy Self-reported Cognitive Impairment Questionnaire (SASCI-Q) - a research tool discriminating between subjectively cognitively impaired patients and healthy controls.
International psychogeriatrics / IPA 2013;25(3):420-30.
2013: Nancy L Pedersen; Inge Petersen; Kaare Christensen; Anna K Dahl; Deborah Finkel; Carol E Franz; Margaret Gatz; Briana N Horwitz; Boo Johansson; Wendy Johnson; William S Kremen; Michael J Lyons; Bo Malmberg; Matt McGue; Jenae M Neiderhiser; Chandra A Reynolds
IGEMS: the consortium on Interplay of Genes and Environment across Multiple Studies.
Twin research and human genetics : the official journal of the International Society for Twin Studies 2013;16(1):481-9.
2013: Anne Ingeborg Berg; Arto Nordlund; Anders Wallin; Boo Johansson
Living with stable MCI: experiences among 17 individuals evaluated at a memory clinic.
Aging & mental health 2013;17(3):293-9.
2013: Sindre Rolstad; Anne Ingeborg Berg; Maria Bjerke; Boo Johansson; Henrik Zetterberg; Anders Wallin
Cerebrospinal fluid biomarkers mirror rate of cognitive decline.
Journal of Alzheimer's disease : JAD 2013;34(4):949-56.
2012: Sindre Rolstad; Anne I Berg; Boo Johansson; Henrik Zetterberg; Anders Wallin
All cognitive systems but speed and visuospatial functions reduce the effect of CSF pathology on other systems.
Current Alzheimer research 2012;9(9):1043-9.
2012: Valgeir Thorvaldsson; Anne Börjesson-Hanson; Scott M Hofer; Svante Ostling; Simona Sacuiu; Ingmar Skoog; Boo Johansson
Nonlinear blood pressure effects on cognition in old age: separating between-person and within-person associations.
Psychology and aging 2012;27(2):375-83.
2012: Carina Hjelm; Boo Johansson; Jan Mårtensson; Anders Broström; Anna Dahl; Anna Strömberg
The influence of heart failure on longitudinal changes in cognition among individuals 80 years of age and older.
Journal of clinical nursing 2012;21(7-8):994-1003.
2012: Johanna Skoogh; Gunnar Steineck; Ulrika Stierner; Anders Wallin; Ulrica Wilderäng; Eva Cavallin-Ståhl; Margaret Gatz; Boo Johansson
Testicular-cancer survivors experience compromised language following chemotherapy: findings in a Swedish population-based study 3-26 years after treatment.
Acta oncologica (Stockholm, Sweden) 2012;51(2):185-97.
2012: Magnus Lindwall; Stuart W S MacDonald; Meghan B Mitchell; Dan Mungas; Marcus Praetorius; Annie Robitaille; K Warner Schaie; Steven D Shirk; Sherry L Willis; Elizabeth M Zelinski; Alireza Atri; Andreana Benitez; Cassandra L Brown; Cynthia R Cimino; Roger A Dixon; Laura E Gibbons; Scott Hofer; Boo Johansson; Robert F Kennison; Andrea M Piccinin
Dynamic associations of change in physical activity and change in cognitive function: coordinated analyses of four longitudinal studies.
Journal of aging research 2012;2012():493598.
2012: Meghan B Mitchell; Dan Mungas; Annie Robitaille; K Warner Schaie; Steven D Shirk; Sherry L Willis; Elizabeth M Zelinski; Alireza Atri; Andreana Benitez; Cassandra L Brown; Cynthia R Cimino; Roger A Dixon; Laura E Gibbons; Scott Hofer; Boo Johansson; Robert F Kennison; Magnus Lindwall; Stuart W S MacDonald; Andrea M Piccinin
Cognitively Stimulating Activities: Effects on Cognition across Four Studies with up to 21 Years of Longitudinal Data.
Journal of aging research 2012;2012():461592.
2012: Cassandra L Brown; Cynthia R Cimino; Roger A Dixon; Laura E Gibbons; Scott Hofer; Boo Johansson; Robert F Kennison; Magnus Lindwall; Stuart W S MacDonald; Meghan B Mitchell; Dan Mungas; Annie Robitaille; K Warner Schaie; Steven D Shirk; Sherry L Willis; Elizabeth M Zelinski; Alireza Atri; Andreana Benitez; Andrea M Piccinin
Social activity and cognitive functioning over time: a coordinated analysis of four longitudinal studies.
Journal of aging research 2012;2012():287438.
2011: Andrea M Piccinin; Fiona E Matthews; Graciela Muniz; Boo Johansson
Terminal decline from within- and between-person perspectives, accounting for incident dementia.
The journals of gerontology. Series B, Psychological sciences and social sciences 2011;66(4):391-401.
2011: Trevor Archer; A Fredriksson; Boo Johansson
Exercise alleviates Parkinsonism: clinical and laboratory evidence.
Acta neurologica Scandinavica 2011;123(2):73-84.
2011: Sindre Rolstad; Henrik Zetterberg; Anne Ingeborg Berg; Maria Bjerke; Kaj Blennow; Boo Johansson; Anders Wallin
Amyloid-β₄₂ is associated with cognitive impairment in healthy elderly and subjective cognitive impairment.
Journal of Alzheimer's disease : JAD 2011;26(1):135-42.
2011: Valgeir Thorvaldsson; Stuart W S MacDonald; Laura Fratiglioni; Bengt Winblad; Miia Kivipelto; Erika Jonsson Laukka; Ingmar Skoog; Simona Sacuiu; Xinxin Guo; Svante Ostling; Anne Börjesson-Hanson; Deborah Gustafson; Boo Johansson; Lars Bäckman
Onset and rate of cognitive change before dementia diagnosis: findings from two Swedish population-based longitudinal studies.
Journal of the International Neuropsychological Society : JINS 2011;17(1):154-62.
2010: Ross Andel; Michael Crowe; Maria Feychting; Nancy L Pedersen; Laura Fratiglioni; Boo Johansson; Margaret Gatz
Work-related exposure to extremely low-frequency magnetic fields and dementia: results from the population-based study of dementia in Swedish twins.
The journals of gerontology. Series A, Biological sciences and medical sciences 2010;65(11):1220-7.
2010: Valgeir Thorvaldsson; Arto Nordlund; Ivar Reinvang; Kaj Blennow; Henrik Zetterberg; Anders Wallin; Boo Johansson
Memory in individuals with mild cognitive impairment in relation to APOE and CSF Abeta42.
International psychogeriatrics / IPA 2010;22(4):598-606.
2010: Chandra A Reynolds; Mun-Gwan Hong; Ulrika K Eriksson; Kaj Blennow; Fredrik Wiklund; Boo Johansson; Bo Malmberg; Stig Berg; Andrey Alexeyenko; Henrik Grönberg; Margaret Gatz; Nancy L Pedersen; Jonathan A Prince
Analysis of lipid pathway genes indicates association of sequence variation near SREBF1/TOM1L2/ATPAF2 with dementia risk.
Human molecular genetics 2010;19(10):2068-78.
2010: Tiffany F Hughes; Ross Andel; Brent Small; Amy R Borenstein; James A Mortimer; Alicja Wolk; Boo Johansson; Laura Fratiglioni; Nancy L Pedersen; Margaret Gatz
Midlife fruit and vegetable consumption and risk of dementia in later life in Swedish twins.
The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry 2010;18(5):413-20.
2010: Terrie Vasilopoulos; Holly A Mack; Gerald E McClearn; Stig Berg; Boo Johansson; George P Vogler
Stability of genetic influences on pulmonary function in a longitudinal study of octogenarian twins.
American journal of human biology : the official journal of the Human Biology Council 2010;22(3):375-7.
2010: Helene Thorstensson; Boo Johansson
Why do some people lose teeth across their lifespan whereas others retain a functional dentition into very old age?
Gerodontology 2010;27(1):19-25.
2010: Chandra A Reynolds; Mun-Gwan Hong; Ulrika K Eriksson; Kaj Blennow; Boo Johansson; Bo Malmberg; Stig Berg; Margaret Gatz; Nancy L Pedersen; Anna M Bennet; Jonathan A Prince
Sequence variation in SORL1 and dementia risk in Swedes.
Neurogenetics 2010;11(1):139-42.
2010: Linda B Hassing; Anna Dahl; Nancy L Pedersen; Boo Johansson
Overweight in midlife is related to lower cognitive function 30 years later: a prospective study with longitudinal assessments.
Dementia and geriatric cognitive disorders 2010;29(6):543-52.
2009: Chandra A Reynolds; Mun-Gwan Hong; Ulrika K Eriksson; Kaj Blennow; Anna M Bennet; Boo Johansson; Bo Malmberg; Stig Berg; Fredrik Wiklund; Margaret Gatz; Nancy L Pedersen; Jonathan A Prince
A survey of ABCA1 sequence variation confirms association with dementia.
Human mutation 2009;30(9):1348-54.
2009: Anne Ingeborg Berg; Linda B Hassing; Sven E Nilsson; Boo Johansson
"As long as I'm in good health". The relationship between medical diagnoses and life satisfaction in the oldest-old.
Aging clinical and experimental research 2009;21(4-5):307-13.
2009: Helene Thorstensson; Boo Johansson
Does oral health say anything about survival in later life? Findings in a Swedish cohort of 80+ years at baseline.
Community dentistry and oral epidemiology 2009;37(4):325-32.
2009: Linda B Hassing; Anna Dahl; V Thorvaldsson; Stig Berg; Margaret Gatz; Nancy L Pedersen; Boo Johansson
Overweight in midlife and risk of dementia: a 40-year follow-up study.
International journal of obesity (2005) 2009;33(8):893-8.
2009: Jessica A Brommelhoff; Margaret Gatz; Boo Johansson; John J McArdle; Laura Fratiglioni; Nancy L Pedersen
Depression as a risk factor or prodromal feature for dementia? Findings in a population-based sample of Swedish twins.
Psychology and aging 2009;24(2):373-84.
2009: Simona Sacuiu; Deborah Gustafson; Boo Johansson; Valgeir Thorvaldsson; Stig Berg; Magnus Sjögren; Xinxin Guo; Svante Ostling; Ingmar Skoog
The pattern of cognitive symptoms predicts time to dementia onset.
Alzheimer's & dementia : the journal of the Alzheimer's Association 2009;5(3):199-206.
2009: Anne Ingeborg Berg; Lesa Hoffman; Linda B Hassing; Gerald E McClearn; Boo Johansson
What matters, and what matters most, for change in life satisfaction in the oldest-old? A study over 6 years among individuals 80+.
Aging & mental health 2009;13(2):191-201.
2009: Tessa N van den Kommer; Daniel E Bontempo; Hannie C Comijs; Scott M Hofer; Miranda G Dik; Andrea M Piccinin; Cees Jonker; Dorly J H Deeg; Boo Johansson
Classification models for early identification of persons at risk for dementia in primary care: an evaluation in a sample aged 80 years and older.
Dementia and geriatric cognitive disorders 2009;28(6):567.
2009: Sven E Nilsson; Sanna Read; Stig Berg; Boo Johansson
Heritabilities for fifteen routine biochemical values: findings in 215 Swedish twin pairs 82 years of age or older.
Scandinavian journal of clinical and laboratory investigation 2009;69(5):562-9.
2009: Taina Guldberg-Kjär; Boo Johansson
Old people reporting childhood AD/HD symptoms: retrospectively self-rated AD/HD symptoms in a population-based Swedish sample aged 65-80.
Nordic journal of psychiatry 2009;63(5):375-82.
2009: Weili Xu; Chengxuan Qiu; Margaret Gatz; Nancy L Pedersen; Boo Johansson; Laura Fratiglioni
Mid- and late-life diabetes in relation to the risk of dementia: a population-based twin study.
Diabetes 2009;58(1):71-7.
2008: Anders Wikby; Ingrid A Månsson; Boo Johansson; Jan Strindhall; Sven E Nilsson
The immune risk profile is associated with age and gender: findings from three Swedish population studies of individuals 20-100 years of age.
Biogerontology 2008;9(5):299-308.
2008: V Thorvaldsson; Scott Hofer; S Berg; Ingmar Skoog; S Sacuiu; Boo Johansson
Onset of terminal decline in cognitive abilities in individuals without dementia.
Neurology 2008;71(12):882-7.
2008: Mun-Gwan Hong; Chandra Reynolds; Margaret Gatz; Boo Johansson; Jennifer C Palmer; Harvest F Gu; Kaj Blennow; Pat Kehoe; Ulf de Faire; Nancy L Pedersen; Jonathan A Prince
Evidence that the gene encoding insulin degrading enzyme influences human lifespan.
Human molecular genetics 2008;17(15):2370-8.
2008: Ross Andel; Michael Crowe; Nancy L Pedersen; Laura Fratiglioni; Boo Johansson; Margaret Gatz
Physical exercise at midlife and risk of dementia three decades later: a population-based study of Swedish twins.
The journals of gerontology. Series A, Biological sciences and medical sciences 2008;63(1):62-6.
2007: Stephanie L Bakaysa; Lorelei A Mucci; P Eline Slagboom; Dorret I Boomsma; Gerald E McClearn; Boo Johansson; Nancy L Pedersen
Telomere length predicts survival independent of genetic influences.
Aging cell 2007;6(6):769-74.
2007: Elizabeth Braungart Fauth; Steven H Zarit; Bo Malmberg; Boo Johansson
Physical, cognitive, and psychosocial variables from the Disablement Process Model predict patterns of independence and the transition into disability for the oldest-old.
The Gerontologist 2007;47(5):613-24.
2007: Margaret Gatz; James A Mortimer; Laura Fratiglioni; Boo Johansson; Stig Berg; Ross Andel; Michael Crowe; Amy Fiske; Chandra A Reynolds; Nancy L Pedersen
Accounting for the relationship between low education and dementia: a twin study.
Physiology & behavior 2007;92(1-2):232-7.
2007: Jan Strindhall; Bengt-Olof Nilsson; Sture Löfgren; Jan Ernerudh; Graham Pawelec; Boo Johansson; Anders Wikby
No Immune Risk Profile among individuals who reach 100 years of age: findings from the Swedish NONA immune longitudinal study.
Experimental gerontology 2007;42(8):753-61.
2007: Ofer Harel; Scott Hofer; Lesa Hoffman; Nancy L Pedersen; Boo Johansson
Population inference with mortality and attrition in longitudinal studies on aging: a two-stage multiple imputation method.
Experimental aging research 2007;33(2):187-203.
2007: Sven E Nilsson; Sanna Read; Stig Berg; Boo Johansson; Arne Melander; Ulf Lindblad
Low systolic blood pressure is associated with impaired cognitive function in the oldest old: longitudinal observations in a population-based sample 80 years and older.
Aging clinical and experimental research 2007;19(1):41-7.
2006: David N Proctor; Elizabeth B Fauth; Lesa Hoffman; Scott Hofer; Gerald E McClearn; Stig Berg; Boo Johansson
Longitudinal changes in physical functional performance among the oldest old: insight from a study of Swedish twins.
Aging clinical and experimental research 2006;18(6):517-30.
2006: Bengt-Olof Nilsson; Thomas Skogh; Jan Ernerudh; Boo Johansson; Sture Löfgren; Anders Wikby; Charlotte Dahle
Antinuclear antibodies in the oldest-old women and men.
Journal of autoimmunity 2006;27(4):281-8.
2006: Valgeir Thorvaldsson; Scott Hofer; Stig Berg; Boo Johansson
Effects of repeated testing in a longitudinal age-homogeneous study of cognitive aging.
The journals of gerontology. Series B, Psychological sciences and social sciences 2006;61(6):P348-54.
2006: Anders Wikby; Bengt-Olof Nilsson; Rosalyn J Forsey; Julie Thompson; Jan Strindhall; Sture Löfgren; Jan Ernerudh; Graham Pawelec; Frederick Ferguson; Boo Johansson
The immune risk phenotype is associated with IL-6 in the terminal decline stage: findings from the Swedish NONA immune longitudinal study of very late life functioning.
Mechanisms of ageing and development 2006;127(8):695-704.
2006: A I Berg; Linda B Hassing; Gerald E McClearn; Boo Johansson
What matters for life satisfaction in the oldest-old?
Aging & mental health 2006;10(3):257-64.
2006: Sanna Read; Nancy L Pedersen; Margaret Gatz; Stig Berg; Eero Vuoksimaa; Bo Malmberg; Boo Johansson; Gerald E McClearn
Sex differences after all those years? Heritability of cognitive abilities in old age.
The journals of gerontology. Series B, Psychological sciences and social sciences 2006;61(3):P137-43.
2006: Margaret Gatz; James A Mortimer; Laura Fratiglioni; Boo Johansson; Stig Berg; Chandra A Reynolds; Nancy L Pedersen
Potentially modifiable risk factors for dementia in identical twins.
Alzheimer's & dementia : the journal of the Alzheimer's Association 2006;2(2):110-7.
2006: Sine Reker Hadrup; Jan Strindhall; Tania Køllgaard; Tina Seremet; Boo Johansson; Graham Pawelec; Per thor Straten; Anders Wikby
Longitudinal studies of clonally expanded CD8 T cells reveal a repertoire shrinkage predicting mortality and an increased number of dysfunctional cytomegalovirus-specific T cells in the very elderly.
Journal of immunology (Baltimore, Md. : 1950) 2006;176(4):2645-53.
2006: Margaret Gatz; Chandra A Reynolds; Laura Fratiglioni; Boo Johansson; James A Mortimer; Stig Berg; Amy Fiske; Nancy L Pedersen
Role of genes and environments for explaining Alzheimer disease.
Archives of general psychiatry 2006;63(2):168-74.
2005: S Sacuiu; Magnus Sjögren; Boo Johansson; Deborah Gustafson; Ingmar Skoog
Prodromal cognitive signs of dementia in 85-year-olds using four sources of information.
Neurology 2005;65(12):1894-900.
2005: Margaret Gatz; Amy Fiske; Chandra A Reynolds; Boo Johansson; Laura Fratiglioni; Nancy L Pedersen
Performance on neurocognitive tests by co-twins to dementia cases compared to normal control twins.
Journal of geriatric psychiatry and neurology 2005;18(4):202-7.
2005: Lara H Heflin; Beth E Meyerowitz; Per Hall; Paul Lichtenstein; Boo Johansson; Nancy L Pedersen; Margaret Gatz
Re: Cancer as a risk factor for dementia: a house built on shifting sand.
Journal of the National Cancer Institute 2005;97(20):1550-1; author reply 1551-2.
2005: Ross Andel; Michael Crowe; Nancy L Pedersen; James Mortimer; Eileen Crimmins; Boo Johansson; Margaret Gatz
Complexity of work and risk of Alzheimer's disease: a population-based study of Swedish twins.
The journals of gerontology. Series B, Psychological sciences and social sciences 2005;60(5):P251-8.
2005: Lara H Heflin; Beth E Meyerowitz; Per Hall; Paul Lichtenstein; Boo Johansson; Nancy L Pedersen; Margaret Gatz
Cancer as a risk factor for long-term cognitive deficits and dementia.
Journal of the National Cancer Institute 2005;97(11):854-6.
2005: Anders Wikby; Frederick Ferguson; Rosalyn J Forsey; Julie Thompson; Jan Strindhall; Sture Löfgren; Bengt-Olof Nilsson; Jan Ernerudh; Graham Pawelec; Boo Johansson
An immune risk phenotype, cognitive impairment, and survival in very late life: impact of allostatic load in Swedish octogenarian and nonagenarian humans.
The journals of gerontology. Series A, Biological sciences and medical sciences 2005;60(5):556-65.
2005: Catharina Lewerin; Michael Matousek; Gunilla Steen; Boo Johansson; Bertil Steen; Herman Nilsson-Ehle
Significant correlations of plasma homocysteine and serum methylmalonic acid with movement and cognitive performance in elderly subjects but no improvement from short-term vitamin therapy: a placebo-controlled randomized study.
The American journal of clinical nutrition 2005;81(5):1155-62.
2005: Margaret Gatz; Laura Fratiglioni; Boo Johansson; Stig Berg; James A Mortimer; Chandra A Reynolds; Amy Fiske; Nancy L Pedersen
Complete ascertainment of dementia in the Swedish Twin Registry: the HARMONY study.
Neurobiology of aging 2005;26(4):439-47.
2004: Ya-Ping Jin; Margaret Gatz; Boo Johansson; Nancy L Pedersen
Sensitivity and specificity of dementia coding in two Swedish disease registries.
Neurology 2004;63(4):739-41.
2004: Linda B Hassing; Michael D Grant; Scott Hofer; Nancy L Pedersen; Sven E Nilsson; Stig Berg; Gerald E McClearn; Boo Johansson
Type 2 diabetes mellitus contributes to cognitive decline in old age: a longitudinal population-based study.
Journal of the International Neuropsychological Society : JINS 2004;10(4):599-607.
2004: Linda B Hassing; Scott Hofer; Sven E Nilsson; Stig Berg; Nancy L Pedersen; Gerald E McClearn; Boo Johansson
Comorbid type 2 diabetes mellitus and hypertension exacerbates cognitive decline: evidence from a longitudinal study.
Age and ageing 2004;33(4):355-61.
2004: Annica Johansson; Hagit Katzov; Henrik Zetterberg; Lars Feuk; Boo Johansson; Nenad Bogdanovic; Niels Andreasen; Boris Lenhard; Anthony J Brookes; Nancy L Pedersen; Kaj Blennow; Jonathan A Prince
Variants of CYP46A1 may interact with age and APOE to influence CSF Abeta42 levels in Alzheimer's disease.
Human genetics 2004;114(6):581-7.
2004: M Jansson; Margaret Gatz; Stig Berg; Boo Johansson; Bo Malmberg; Gerald E McClearn; Martin Schalling; Nancy L Pedersen
Gender differences in heritability of depressive symptoms in the elderly.
Psychological medicine 2004;34(3):471-9.
2004: Svante Ostling; Boo Johansson; Ingmar Skoog
Cognitive test performance in relation to psychotic symptoms and paranoid ideation in non-demented 85-year-olds.
Psychological medicine 2004;34(3):443-50.
2004: Hagit Katzov; Katy Chalmers; Juni Palmgren; Niels Andreasen; Boo Johansson; Nigel J Cairns; Margaret Gatz; Gordon K Wilcock; Seth Love; Nancy L Pedersen; Anthony J Brookes; Kaj Blennow; Pat Kehoe; Jonathan A Prince
Genetic variants of ABCA1 modify Alzheimer disease risk and quantitative traits related to beta-amyloid metabolism.
Human mutation 2004;23(4):358-67.
2004: Boo Johansson; Scott Hofer; Jason C Allaire; Mildred Maldonado-Molina; Andrea M Piccinin; Stig Berg; Nancy L Pedersen; Gerald E McClearn
Change in cognitive capabilities in the oldest old: the effects of proximity to death in genetically related individuals over a 6-year period.
Psychology and aging 2004;19(1):145-56.
2004: Sven E Nilsson; Sanna Takkinen; Boo Johansson; Gerhard Dotevall; Arne Melander; Stig Berg; Gerald E McClearn
Laxative treatment elevates plasma homocysteine: a study on a population-based Swedish sample of old people.
European journal of clinical pharmacology 2004;60(1):45-9.
2004: Nancy L Pedersen; Margaret Gatz; Stig Berg; Boo Johansson
How heritable is Alzheimer's disease late in life? Findings from Swedish twins.
Annals of neurology 2004;55(2):180-5.
2003: Jonathan A Prince; Lars Feuk; Harvest F Gu; Boo Johansson; Margaret Gatz; Kaj Blennow; Anthony J Brookes
Genetic variation in a haplotype block spanning IDE influences Alzheimer disease.
Human mutation 2003;22(5):363-71.
2003: Ingrid Bergh; Gunilla Steen; Margda Waern; Boo Johansson; Anders Odén; Björn Sjöström; Bertil Steen
Pain and its relation to cognitive function and depressive symptoms: a Swedish population study of 70-year-old men and women.
Journal of pain and symptom management 2003;26(4):903-12.
2003: Michael Crowe; Ross Andel; Nancy L Pedersen; Boo Johansson; Margaret Gatz
Does participation in leisure activities lead to reduced risk of Alzheimer's disease? A prospective study of Swedish twins.
The journals of gerontology. Series B, Psychological sciences and social sciences 2003;58(5):P249-55.
2003: Sven E Nilsson; Boo Johansson; Sanna Takkinen; Stig Berg; Steven H Zarit; Gerald E McClearn; Arne Melander
Does aspirin protect against Alzheimer's dementia? A study in a Swedish population-based sample aged > or =80 years.
European journal of clinical pharmacology 2003;59(4):313-9.
2003: Tantina B Hong; Steven H Zarit; Boo Johansson
Mild cognitive impairment in the oldest old: a comparison of two approaches.
Aging & mental health 2003;7(4):271-6.
2003: M Jansson; Margaret Gatz; Stig Berg; Boo Johansson; Bo Malmberg; Gerald E McClearn; Martin Schalling; Nancy L Pedersen
Association between depressed mood in the elderly and a 5-HTR2A gene variant.
American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics 2003;120B(1):79-84.
2003: Pat Kehoe; Hagit Katzov; Lars Feuk; Anna M Bennet; Boo Johansson; Björn Wiman; Ulf de Faire; Nigel J Cairns; Gordon K Wilcock; Anthony J Brookes; Kaj Blennow; Jonathan A Prince
Haplotypes extending across ACE are associated with Alzheimer's disease.
Human molecular genetics 2003;12(8):859-67.
2003: Rosalyn J Forsey; J M Thompson; Jan Ernerudh; T L Hurst; Jan Strindhall; Boo Johansson; Bengt-Olof Nilsson; Anders Wikby
Plasma cytokine profiles in elderly humans.
Mechanisms of ageing and development 2003;124(4):487-93.
2003: Bengt-Olof Nilsson; Jan Ernerudh; Boo Johansson; Per-Eric Evrin; Sture Löfgren; Frederick Ferguson; Anders Wikby
Morbidity does not influence the T-cell immune risk phenotype in the elderly: findings in the Swedish NONA Immune Study using sample selection protocols.
Mechanisms of ageing and development 2003;124(4):469-76.
2003: Margaret Gatz; Amy Fiske; Chandra A Reynolds; Julie Loebach Wetherell; Boo Johansson; Nancy L Pedersen
Sex differences in genetic risk for dementia.
Behavior genetics 2003;33(2):95-105.
2003: Sven E Nilsson; Sanna Takkinen; N Tryding; PE Evrin; Stig Berg; Gerald E McClearn; Boo Johansson
Association of biochemical values with morbidity in the elderly: a population-based Swedish study of persons aged 82 or more years.
Scandinavian journal of clinical and laboratory investigation 2003;63(7-8):457-66.
2003: Helene Thorstensson; Boo Johansson
Oral health in a population-based sample of the oldest-old: findings in twins 80 years and older in Sweden.
Swedish dental journal 2003;27(2):49-57.
2003: Sven E Nilsson; PE Evrin; N Tryding; Stig Berg; Gerald E McClearn; Boo Johansson
Biochemical values in persons older than 82 years of age: report from a population-based study of twins.
Scandinavian journal of clinical and laboratory investigation 2003;63(1):1-13.
2002: Margaret Gatz; Chandra A Reynolds; Richard John; Boo Johansson; James A Mortimer; Nancy L Pedersen
Telephone screening to identify potential dementia cases in a population-based sample of older adults.
International psychogeriatrics / IPA 2002;14(3):273-89.
2002: Linda B Hassing; Boo Johansson; Sven E Nilsson; Stig Berg; Nancy L Pedersen; Margaret Gatz; Gerald E McClearn
Diabetes mellitus is a risk factor for vascular dementia, but not for Alzheimer's disease: a population-based study of the oldest old.
International psychogeriatrics / IPA 2002;14(3):239-48.
2002: Sven E Nilsson; Boo Johansson; Stig Berg; David Karlsson; Gerald E McClearn
A comparison of diagnosis capture from medical records, self-reports, and drug registrations: a study in individuals 80 years and older.
Aging clinical and experimental research 2002;14(3):178-84.
2002: Linda B Hassing; Boo Johansson; Stig Berg; Sven E Nilsson; Nancy L Pedersen; Scott Hofer; Gerald E McClearn
Terminal decline and markers of cerebro- and cardiovascular disease: findings from a longitudinal study of the oldest old.
The journals of gerontology. Series B, Psychological sciences and social sciences 2002;57(3):P268-76.
2002: Paul Hyland; Orla Duggan; Julie Turbitt; James Coulter; Anders Wikby; Boo Johansson; Andrea Tompa; Christopher Barnett; Yvonne A Barnett
Nonagenarians from the Swedish NONA Immune Study have increased plasma antioxidant capacity and similar levels of DNA damage in peripheral blood mononuclear cells compared to younger control subjects.
Experimental gerontology 2002;37(2-3):465-73.
2002: Anders Wikby; Boo Johansson; Jadwiga Olsson; Sture Löfgren; Bengt-Olof Nilsson; Frederick Ferguson
Expansions of peripheral blood CD8 T-lymphocyte subpopulations and an association with cytomegalovirus seropositivity in the elderly: the Swedish NONA immune study.
Experimental gerontology 2002;37(2-3):445-53.
2002: Owen A Ross; Paul Hyland; Martin D Curran; Brian P McIlhatton; Anders Wikby; Boo Johansson; Andrea Tompa; Graham Pawelec; Christopher R Barnett; Derek Middleton; Yvonne A Barnett
Mitochondrial DNA damage in lymphocytes: a role in immunosenescence?
Experimental gerontology 2002;37(2-3):329-40.
2001: Ross Andel; Margaret Gatz; Nancy L Pedersen; Chandra A Reynolds; Boo Johansson; Stig Berg
Deficits in controlled processing may predict dementia: a twin study.
The journals of gerontology. Series B, Psychological sciences and social sciences 2001;56(6):P347-55.
2001: Margaret Gatz; Pia Svedberg; Nancy L Pedersen; James A Mortimer; Stig Berg; Boo Johansson
Education and the risk of Alzheimer's disease: findings from the study of dementia in Swedish twins.
The journals of gerontology. Series B, Psychological sciences and social sciences 2001;56(5):P292-300.
2001: D A Haynie; Stig Berg; Boo Johansson; Margaret Gatz; Steven H Zarit
Symptoms of depression in the oldest old: a longitudinal study.
The journals of gerontology. Series B, Psychological sciences and social sciences 2001;56(2):P111-8.
2001: Boo Johansson; J D Grant; Robert Plomin; Nancy L Pedersen; Frank M Ahern; Stig Berg; Gerald E McClearn
Health locus of control in late life: a study of genetic and environmental influences in twins aged 80 years and older.
Health psychology : official journal of the Division of Health Psychology, American Psychological Association 2001;20(1):33-40.
2001: Elia E Femia; Steven H Zarit; Boo Johansson
The disablement process in very late life: a study of the oldest-old in Sweden.
The journals of gerontology. Series B, Psychological sciences and social sciences 2001;56(1):P12-23.
2000: Jadwiga Olsson; Anders Wikby; Boo Johansson; Sture Löfgren; Bengt-Olof Nilsson; Frederick Ferguson
Age-related change in peripheral blood T-lymphocyte subpopulations and cytomegalovirus infection in the very old: the Swedish longitudinal OCTO immune study.
Mechanisms of ageing and development 2000;121(1-3):187-201.
2000: Birgitta Söder; Boo Johansson; Per-Osten Söder
The relation between foetor ex ore, oral hygiene and periodontal disease.
Swedish dental journal 2000;24(3):73-82.
1999: Nancy L Pedersen; B Steffensson; S Berg; Boo Johansson; G E McClearn
The importance of genetic and environmental effects for self-reported health symptoms: a 30-year follow-up considering survival and selection effects.
Journal of aging and health 1999;11(4):475-93.
1999: Boo Johansson; K Wannfors; J Ekenbäck; JI Smedberg; J Hirsch
Implants and sinus-inlay bone grafts in a 1-stage procedure on severely atrophied maxillae: surgical aspects of a 3-year follow-up study.
The International journal of oral & maxillofacial implants 1999;14(6):811-8.
1999: Boo Johansson; Keith E Whitfield; Nancy L Pedersen; Scott Hofer; Frank M Ahern; Gerald E McClearn
Origins of individual differences in episodic memory in the oldest-old: a population-based study of identical and same-sex fraternal twins aged 80 and older.
The journals of gerontology. Series B, Psychological sciences and social sciences 1999;54(3):P173-9.
1998: Anders Wikby; P Maxson; Jadwiga Olsson; Boo Johansson; Frederick Ferguson
Changes in CD8 and CD4 lymphocyte subsets, T cell proliferation responses and non-survival in the very old: the Swedish longitudinal OCTO-immune study.
Mechanisms of ageing and development 1998;102(2-3):187-98.
1997: Sandra Simmons; Boo Johansson; Steven H Zarit; B Ljungquist; Robert Plomin; Gerald E McClearn
Selection bias in samples of older twins? A comparison between octogenarian twins and singletons in Sweden.
Journal of aging and health 1997;9(4):553-67.
1997: Elia E Femia; Steven H Zarit; Boo Johansson
Predicting change in activities of daily living: a longitudinal study of the oldest old in Sweden.
The journals of gerontology. Series B, Psychological sciences and social sciences 1997;52(6):P294-302.
1997: Gerald E McClearn; Boo Johansson; Stig Berg; Nancy L Pedersen; Frank M Ahern; Stephen A Petrill; Robert Plomin
Substantial genetic influence on cognitive abilities in twins 80 or more years old.
Science (New York, N.Y.) 1997;276(5318):1560-3.
1997: Boo Johansson; R Allen-Burge; S H Zarit
Self-reports on memory functioning in a longitudinal study of the oldest old: relation to current, prospective, and retrospective performance.
The journals of gerontology. Series B, Psychological sciences and social sciences 1997;52(3):P139-46.
1997: Margaret Gatz; Nancy L Pedersen; Stig Berg; Boo Johansson; Kurt Johansson; James A Mortimer; S F Posner; Matti Viitanen; Bengt Winblad; A Ahlbom
Heritability for Alzheimer's disease: the study of dementia in Swedish twins.
The journals of gerontology. Series A, Biological sciences and medical sciences 1997;52(2):M117-25.
1997: Boo Johansson; S H Zarit
Early cognitive markers of the incidence of dementia and mortality: a longitudinal population-based study of the oldest old.
International journal of geriatric psychiatry 1997;12(1):53-9.