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Ptomey LT, Barton K, Swinford E, Bodde A, George A, Gorczyca AM, Niedens CM, Sprague SC, Yeager A, Helsel B, Teri L, Vidoni ED, Perales-Puchalt J. Preliminary translation of 'Reducing Disability in Alzheimer's Disease' among individuals with intellectual disabilities and caregiver dyads. JOURNAL OF APPLIED RESEARCH IN INTELLECTUAL DISABILITIES 2024; 37:e13239. [PMID: 38621995 PMCID: PMC11067498 DOI: 10.1111/jar.13239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 01/30/2024] [Accepted: 04/02/2024] [Indexed: 04/17/2024]
Abstract
BACKGROUND The Reducing Disability in Alzheimer's Disease in Kansas City (RDAD-KC) intervention has been shown to improve the health of individuals with dementia and caregiver dyads. This manuscript reports the results of implementing the RDAD among individuals with intellectual disabilities and caregiver dyads. METHODS Nine community agencies deployed the 12-week intervention. We assessed changes in individuals with intellectual disabilities' behavioural symptom related severity and physical activity, and caregivers' behavioural symptom-related distress, unmet needs, and caregiver strain. RESULTS Forty-four dyads enrolled, and 23 (~60 years, 48% female) completed ≥75% of the intervention. We observed decreases in behavioural symptom related severity (p = .07) and increases in physical activity (p = .20) among individuals with intellectual disabilities. We also observed decreases in behavioural symptom related distress (p = .14), unmet needs (p = .50), and caregiver strain (p = .50) among caregivers. CONCLUSIONS The RDAD-KC intervention showed promising, although statistically non-significant, benefits among individuals with intellectual disabilities and their caregivers.
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Affiliation(s)
- Lauren T Ptomey
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Kelli Barton
- Health and Aging Department, University of Missouri-Kansas City Institute for Human Development, Kansas City, Missouri, USA
| | - Emma Swinford
- Health and Aging Department, University of Missouri-Kansas City Institute for Human Development, Kansas City, Missouri, USA
| | - Amy Bodde
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
| | | | - Anna M Gorczyca
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - C Michelle Niedens
- Department of Neurology, University of Kansas Alzheimer's Disease Research Center, Fairway, Kansas, USA
| | | | - Amy Yeager
- Department of Neurology, University of Kansas Alzheimer's Disease Research Center, Fairway, Kansas, USA
| | - Brian Helsel
- Department of Neurology, University of Kansas Alzheimer's Disease Research Center, Fairway, Kansas, USA
| | - Linda Teri
- School of Nursing, University of Washington, Seattle, Washington, USA
| | - Eric D Vidoni
- Department of Neurology, University of Kansas Alzheimer's Disease Research Center, Fairway, Kansas, USA
| | - Jaime Perales-Puchalt
- Department of Neurology, University of Kansas Alzheimer's Disease Research Center, Fairway, Kansas, USA
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Conceição ASGG, Sant Ana LFG, Mattar GP, de Fátima R Silva M, Ramos AR, Oliveira AM, Carvalho CL, Gonçalves OR, Varotto BLR, Martinez LD, Leduc V, Fonseca LM, Forlenza OV. Balance and Gait: Associations With Cognitive Impairment and Dementia in Individuals With Down Syndrome. Alzheimer Dis Assoc Disord 2023; 37:349-356. [PMID: 37788381 DOI: 10.1097/wad.0000000000000580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 08/14/2023] [Indexed: 10/05/2023]
Abstract
BACKGROUND Atypical aging in Down syndrome (DS) is associated with neuropathological characteristics consistent with Alzheimer disease. Gait abnormalities have been shown to be associated with an increased risk of dementia for the general population. The aim of this study was to determine whether gait disorders are associated with worse cognitive performance and dementia in adults with DS. METHODS We evaluated 66 individuals with DS (≥20 y of age), divided into 3 groups: stable cognition, prodromal dementia, and dementia (presumed Alzheimer disease). Each individual was evaluated with the Performance-Oriented Mobility Assessment (POMA), Timed Up and Go test, and Cambridge Examination for Mental Disorders of Older People with Down's Syndrome and Others with Intellectual Disabilities (CAMDEX-DS), in addition to a comprehensive clinical protocol to ascertain the occurrence of medical or psychiatric comorbidities. RESULTS The score on the POMA-Gait subscale score and body mass index were found to be independent predictors of prodromal dementia and dementia ( P <0.001 for both). With the exception of perception, all cognitive domains correlated with the POMA-Total score ( P <0.05). CONCLUSION A lower POMA-Gait score increases the chance of prodromal dementia and dementia in adults with DS. Unlike other research, in this study higher body mass index was also found to increase the chance of prodromal dementia and dementia. In those individuals, applying the POMA could facilitate the early diagnosis of dementia, help identify fall risks, and promote the adoption of geriatric interventions focused on improving functional mobility.
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Affiliation(s)
| | - Lívea F G Sant Ana
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry
| | - Guilherme P Mattar
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry
| | - Maria de Fátima R Silva
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry
- Old Age Research Group, Department and Institute of Psychiatry
| | - Andressa R Ramos
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry
| | | | - Claudia L Carvalho
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry
| | | | - Bruna L R Varotto
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry
| | - Luana D Martinez
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry
| | - Vinícius Leduc
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry
| | - Luciana M Fonseca
- Dental Team, Instituto de Psiquiatria do, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo HCFMUSP, São Paulo, Brazil
- Department of Community and Behavioral Health, Washington State University, Pullman, WA
| | - Orestes V Forlenza
- Laboratory of Neuroscience (LIM-27), Department and Institute of Psychiatry
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Elangovan A, Babu HWS, Iyer M, Gopalakrishnan AV, Vellingiri B. Untangle the mystery behind DS-associated AD - Is APP the main protagonist? Ageing Res Rev 2023; 87:101930. [PMID: 37031726 DOI: 10.1016/j.arr.2023.101930] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/04/2023] [Accepted: 04/06/2023] [Indexed: 04/11/2023]
Abstract
Amyloid precursor protein profusion in Trisomy 21, also called Down Syndrome (DS), is rooted in the genetic determination of Alzheimer's disease (AD). With the recent development in patient care, the life expectancy of DS patients has gradually increased, leading to the high prospect of AD development, consequently leading to the development of plaques of amyloid proteins and neurofibrillary tangles made of tau by the fourth decade of the patient leading to dementia. The altered gene expression resulted in cellular dysfunction due to impairment of autophagy, mitochondrial and lysosomal dysfunction, and copy number variation controlled by the additional genes in Trisomy 21. The cognitive impairment and mechanistic insights underlying DS-AD conditions have been reviewed in this article. Some recent findings regarding biomarkers and therapeutics of DS-AD conditions were highlighted in this review.
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Affiliation(s)
- Ajay Elangovan
- Stem cell and Regenerative Medicine/ Translational Research, Department of Zoology, School of Basic Sciences, Central University of Punjab, Bathinda 151401, Punjab, India; Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| | - Harysh Winster Suresh Babu
- Stem cell and Regenerative Medicine/ Translational Research, Department of Zoology, School of Basic Sciences, Central University of Punjab, Bathinda 151401, Punjab, India; Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| | - Mahalaxmi Iyer
- Department of Biotechnology, Karpagam Academy of Higher Education (Deemed to be University), Coimbatore-641021, India
| | | | - Balachandar Vellingiri
- Stem cell and Regenerative Medicine/ Translational Research, Department of Zoology, School of Basic Sciences, Central University of Punjab, Bathinda 151401, Punjab, India; Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India.
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Jojoa-Acosta MF, Signo-Miguel S, Garcia-Zapirain MB, Gimeno-Santos M, Méndez-Zorrilla A, Vaidya CJ, Molins-Sauri M, Guerra-Balic M, Bruna-Rabassa O. Executive Functioning in Adults with Down Syndrome: Machine-Learning-Based Prediction of Inhibitory Capacity. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182010785. [PMID: 34682531 PMCID: PMC8536074 DOI: 10.3390/ijerph182010785] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/01/2021] [Accepted: 10/05/2021] [Indexed: 12/13/2022]
Abstract
The study of executive function decline in adults with Down syndrome (DS) is important, because it supports independent functioning in real-world settings. Inhibitory control is posited to be essential for self-regulation and adaptation to daily life activities. However, cognitive domains that most predict the capacity for inhibition in adults with DS have not been identified. The aim of this study was to identify cognitive domains that predict the capacity for inhibition, using novel data-driven techniques in a sample of adults with DS (n = 188; 49.47% men; 33.6 ± 8.8 years old), with low and moderate levels of intellectual disability. Neuropsychological tests, including assessment of memory, attention, language, executive functions, and praxis, were submitted to Random Forest, support vector machine, and logistic regression algorithms for the purpose of predicting inhibition capacity, assessed with the Cats-and-Dogs test. Convergent results from the three algorithms show that the best predictors for inhibition capacity were constructive praxis, verbal memory, immediate memory, planning, and written verbal comprehension. These results suggest the minimum set of neuropsychological assessments and potential intervention targets for individuals with DS and ID, which may optimize potential for independent living.
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Affiliation(s)
- Mario Fernando Jojoa-Acosta
- eVIDA—Lab, Faculty of Engineering, Deusto University, 48007 Bilbao, Spain; (M.F.J.-A.); (M.B.G.-Z.); (A.M.-Z.)
| | - Sara Signo-Miguel
- Faculty of Psychology, Education and Sports Sciences Blanquerna, Ramon Llull University, 08022 Barcelona, Spain; (S.S.-M.); (M.G.-S.); (M.M.-S.); (M.G.-B.)
| | | | - Mercè Gimeno-Santos
- Faculty of Psychology, Education and Sports Sciences Blanquerna, Ramon Llull University, 08022 Barcelona, Spain; (S.S.-M.); (M.G.-S.); (M.M.-S.); (M.G.-B.)
| | - Amaia Méndez-Zorrilla
- eVIDA—Lab, Faculty of Engineering, Deusto University, 48007 Bilbao, Spain; (M.F.J.-A.); (M.B.G.-Z.); (A.M.-Z.)
| | - Chandan J. Vaidya
- Department of Psychology, Georgetown University, Washington, DC 20057, USA;
| | - Marta Molins-Sauri
- Faculty of Psychology, Education and Sports Sciences Blanquerna, Ramon Llull University, 08022 Barcelona, Spain; (S.S.-M.); (M.G.-S.); (M.M.-S.); (M.G.-B.)
| | - Myriam Guerra-Balic
- Faculty of Psychology, Education and Sports Sciences Blanquerna, Ramon Llull University, 08022 Barcelona, Spain; (S.S.-M.); (M.G.-S.); (M.M.-S.); (M.G.-B.)
| | - Olga Bruna-Rabassa
- Faculty of Psychology, Education and Sports Sciences Blanquerna, Ramon Llull University, 08022 Barcelona, Spain; (S.S.-M.); (M.G.-S.); (M.M.-S.); (M.G.-B.)
- Correspondence:
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Cognitive Function during the Prodromal Stage of Alzheimer's Disease in Down Syndrome: Comparing Models. Brain Sci 2021; 11:brainsci11091220. [PMID: 34573242 PMCID: PMC8471085 DOI: 10.3390/brainsci11091220] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/10/2021] [Accepted: 09/14/2021] [Indexed: 12/01/2022] Open
Abstract
Accurate identification of the prodromal stage of Alzheimer’s disease (AD), known as mild cognitive impairment (MCI), in adults with Down syndrome (MCI-DS) has been challenging because there are no established diagnostic criteria that can be applied for people with lifelong intellectual disabilities (ID). As such, the sequence of cognitive decline in adults with DS has been difficult to ascertain, and it is possible that domain constructs characterizing cognitive function in neurotypical adults do not generalize to this high-risk population. The present study examined associations among multiple measures of cognitive function in adults with DS, either prior to or during the prodromal stage of AD to determine, through multiple statistical techniques, the measures that reflected the same underlying domains of processing. Participants included 144 adults with DS 40–82 years of age, all enrolled in a larger, multidisciplinary study examining biomarkers of AD in adults with DS. All participants had mild or moderate lifelong intellectual disabilities. Overall AD-related clinical status was rated for each individual during a personalized consensus conference that considered performance as well as health status, with 103 participants considered cognitively stable (CS) and 41 to have MCI-DS. Analyses of 17 variables derived from 10 tests of cognition indicated that performance reflected three underlying factors: language/executive function, memory, and visuomotor. All three domain composite scores significantly predicted MCI-DS status. Based upon path modeling, the language/executive function composite score was the most affected by prodromal AD. However, based upon structural equation modeling, tests assessing the latent construct of memory were the most impacted, followed by those assessing visuomotor, and then those assessing language/executive function. Our study provides clear evidence that cognitive functioning in older adults with DS can be characterized at the cognitive domain level, but the statistical methods selected and the inclusion or exclusion of certain covariates may lead to different conclusions. Best practice requires investigators to understand the internal structure of their variables and to provide evidence that their variables assess their intended constructs.
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Miguel JC, Perez SE, Malek-Ahmadi M, Mufson EJ. Cerebellar Calcium-Binding Protein and Neurotrophin Receptor Defects in Down Syndrome and Alzheimer's Disease. Front Aging Neurosci 2021; 13:645334. [PMID: 33776745 PMCID: PMC7994928 DOI: 10.3389/fnagi.2021.645334] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/04/2021] [Indexed: 12/11/2022] Open
Abstract
Cerebellar hypoplasia is a major characteristic of the Down syndrome (DS) brain. However, the consequences of trisomy upon cerebellar Purkinje cells (PC) and interneurons in DS are unclear. The present study performed a quantitative and qualitative analysis of cerebellar neurons immunostained with antibodies against calbindin D-28k (Calb), parvalbumin (Parv), and calretinin (Calr), phosphorylated and non-phosphorylated intermediate neurofilaments (SMI-34 and SMI-32), and high (TrkA) and low (p75NTR) affinity nerve growth factor (NGF) receptors as well as tau and amyloid in DS (n = 12), Alzheimer's disease (AD) (n = 10), and healthy non-dementia control (HC) (n = 8) cases. Our findings revealed higher Aβ42 plaque load in DS compared to AD and HC but no differences in APP/Aβ plaque load between HC, AD, and DS. The cerebellar cortex neither displayed Aβ40 containing plaques nor pathologic phosphorylated tau in any of the cases examined. The number and optical density (OD) measurements of Calb immunoreactive (-ir) PC soma and dendrites were similar between groups, while the number of PCs positive for Parv and SMI-32 were significantly reduced in AD and DS compared to HC. By contrast, the number of SMI-34-ir PC dystrophic axonal swellings, termed torpedoes, was significantly greater in AD compared to DS. No differences in SMI-32- and Parv-ir PC OD measurements were observed between groups. Conversely, total number of Parv- (stellate/basket) and Calr (Lugaro, brush, and Golgi)-positive interneurons were significantly reduced in DS compared to AD and HC. A strong negative correlation was found between counts for Parv-ir interneurons, Calr-ir Golgi and brush cells, and Aβ42 plaque load. Number of TrkA and p75NTR positive PCs were reduced in AD compared to HC. These findings suggest that disturbances in calcium binding proteins play a critical role in cerebellar neuronal dysfunction in adults with DS.
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Affiliation(s)
- Jennifer C. Miguel
- Department of Neurobiology, Barrow Neurological Institute, Phoenix, AZ, United States
| | - Sylvia E. Perez
- Department of Neurobiology, Barrow Neurological Institute, Phoenix, AZ, United States
| | - Michael Malek-Ahmadi
- Department of Biomedical Informatics, Banner Alzheimer's Institute, Phoenix, AZ, United States
| | - Elliott J. Mufson
- Department of Neurobiology, Barrow Neurological Institute, Phoenix, AZ, United States
- Department of Neurology, Barrow Neurological Institute, Phoenix, AZ, United States
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Knox K, Stanley J, Hendrix JA, Hillerstrom H, Dunn T, Achenbach J, Chicoine BA, Lai F, Lott I, Stanojevic S, Howlett SE, Rockwood K. Development of a symptom menu to facilitate Goal Attainment Scaling in adults with Down syndrome-associated Alzheimer's disease: a qualitative study to identify meaningful symptoms. J Patient Rep Outcomes 2021; 5:5. [PMID: 33427993 PMCID: PMC7801557 DOI: 10.1186/s41687-020-00278-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 12/21/2020] [Indexed: 12/20/2022] Open
Abstract
Background As life expectancy of people with Down syndrome (DS) increases, so does the risk of Alzheimer’s disease (AD). Identifying symptoms and tracking disease progression is especially challenging whenever levels of function vary before the onset of dementia. Goal Attainment Scaling (GAS), an individualized patient-reported outcome, can aid in monitoring disease progression and treatment effectiveness in adults with DS. Here, with clinical input, a validated dementia symptom menu was revised to facilitate GAS in adults living with Down Syndrome-associated Alzheimer’s disease (DS-AD). Methods Four clinicians with expertise in DS-AD and ten caregivers of adults living with DS-AD participated in semi-structured interviews to review the menu. Each participant reviewed 9–15 goal areas to assess their clarity and comprehensiveness. Responses were systematically and independently coded by two researchers as ‘clear’, ‘modify’, ‘remove’ or ‘new’. Caregivers were encouraged to suggest additional items and recommend changes to clarify items. Results Median caregiver age was 65 years (range 54–77). Most were female (9/10) with ≥15 years of education (10/10). Adults with DS-AD had a median age of 58 years (range 52–61) and either a formal diagnosis (6/10) or clinical suspicion (4/10) of dementia. The initial symptom menu consisted of 67 symptoms each with 2–12 descriptors (589 total). The clinicians’ adaptation yielded 58 symptoms each with 4–17 descriptors (580 total). Of these 580 descriptors, caregivers identified 37 (6%) as unclear; these were reworded, and one goal area (4 descriptors) was removed. A further 47 descriptors and one goal area were added to include caregiver-identified concepts. The final menu contained 58 goal areas, each with 7–17 descriptors (623 total). Conclusions A comprehensive symptom menu for adults living with DS-AD was developed to facilitate GAS. Incorporating expert clinician opinion and input from caregivers of adults with DS-AD identified meaningful items that incorporate patient/caregiver perspectives.
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Affiliation(s)
- Kari Knox
- DGI Clinical Inc, 300SH-1701 Hollis St, Halifax, NS, B3J 3M8, Canada
| | - Justin Stanley
- DGI Clinical Inc, 300SH-1701 Hollis St, Halifax, NS, B3J 3M8, Canada
| | | | | | - Taylor Dunn
- DGI Clinical Inc, 300SH-1701 Hollis St, Halifax, NS, B3J 3M8, Canada
| | | | | | - Florence Lai
- Massachusetts General Hospital, Harvard University, Boston, MA, USA
| | - Ira Lott
- University of California Irvine Institute for Memory Impairments and Neurological Disorders, Irvine, CA, USA
| | - Sanja Stanojevic
- DGI Clinical Inc, 300SH-1701 Hollis St, Halifax, NS, B3J 3M8, Canada
| | - Susan E Howlett
- DGI Clinical Inc, 300SH-1701 Hollis St, Halifax, NS, B3J 3M8, Canada.,Dalhousie University, Halifax, NS, Canada
| | - Kenneth Rockwood
- DGI Clinical Inc, 300SH-1701 Hollis St, Halifax, NS, B3J 3M8, Canada. .,Dalhousie University, Halifax, NS, Canada.
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Mollo N, Cicatiello R, Aurilia M, Scognamiglio R, Genesio R, Charalambous M, Paladino S, Conti A, Nitsch L, Izzo A. Targeting Mitochondrial Network Architecture in Down Syndrome and Aging. Int J Mol Sci 2020; 21:E3134. [PMID: 32365535 PMCID: PMC7247689 DOI: 10.3390/ijms21093134] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 04/26/2020] [Accepted: 04/27/2020] [Indexed: 12/12/2022] Open
Abstract
Mitochondria are organelles that mainly control energy conversion in the cell. In addition, they also participate in many relevant activities, such as the regulation of apoptosis and calcium levels, and other metabolic tasks, all closely linked to cell viability. Functionality of mitochondria appears to depend upon their network architecture that may dynamically pass from an interconnected structure with long tubular units, to a fragmented one with short separate fragments. A decline in mitochondrial quality, which presents itself as an altered structural organization and a function of mitochondria, has been observed in Down syndrome (DS), as well as in aging and in age-related pathologies. This review provides a basic overview of mitochondrial dynamics, from fission/fusion mechanisms to mitochondrial homeostasis. Molecular mechanisms determining the disruption of the mitochondrial phenotype in DS and aging are discussed. The impaired activity of the transcriptional co-activator PGC-1α/PPARGC1A and the hyperactivation of the mammalian target of rapamycin (mTOR) kinase are emerging as molecular underlying causes of these mitochondrial alterations. It is, therefore, likely that either stimulating the PGC-1α activity or inhibiting mTOR signaling could reverse mitochondrial dysfunction. Evidence is summarized suggesting that drugs targeting either these pathways or other factors affecting the mitochondrial network may represent therapeutic approaches to improve and/or prevent the effects of altered mitochondrial function. Overall, from all these studies it emerges that the implementation of such strategies may exert protective effects in DS and age-related diseases.
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Affiliation(s)
- Nunzia Mollo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy
| | - Rita Cicatiello
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy
| | - Miriam Aurilia
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy
| | - Roberta Scognamiglio
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy
| | - Rita Genesio
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy
| | - Maria Charalambous
- Institute of Experimental Endocrinology and Oncology “G. Salvatore”, National Research Council, 80131 Naples, Italy
| | - Simona Paladino
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy
| | - Anna Conti
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy
| | - Lucio Nitsch
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy
- Institute of Experimental Endocrinology and Oncology “G. Salvatore”, National Research Council, 80131 Naples, Italy
| | - Antonella Izzo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy
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Glass TJ, Valmadrid LCV, Connor NP. The Adult Ts65Dn Mouse Model of Down Syndrome Shows Altered Swallow Function. Front Neurosci 2019; 13:906. [PMID: 31555077 PMCID: PMC6727863 DOI: 10.3389/fnins.2019.00906] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 08/13/2019] [Indexed: 12/31/2022] Open
Abstract
There are increased risks for deglutition disorders in people with Down syndrome (DS). Although mouse models have been used to study the biological underpinnings of DS in other areas, relatively little is known about swallowing phenotypes in these models. We hypothesized that swallowing performance would be affected in adult mouse models of DS, relative to typical control mice. Videofluoroscopic swallow studies (VFSS) were conducted on adults of two mouse models of DS: Ts65Dn and Dp(16)1Yey, and evaluated in comparison with age-matched controls. Relative to other groups, adult Ts65Dn showed significantly slower swallow rates, longer inter-swallow intervals (ISI), and greater numbers of jaw excursion cycles preceding each swallow. In contrast, adult Dp(16)1Yey mice showed swallowing performance similar to control mice. Exploratory quantitative analyses of the intrinsic tongue (transverse muscle), and extrinsic tongue muscles [genioglossus (GG), styloglossus (SG), and hyoglossus (HG)] showed no significant differences between genotype groups in myosin heavy chain isoform profiles. Collectively, these findings suggest that while swallowing is typical in adult Dp(16)1Yey, swallowing in adult Ts65Dn is atypical due to unknown causes. The finding that adult Ts65Dn may have utility as a model of dysphagia provides new opportunities to elucidate biological underpinnings of dysphagia associated with DS.
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Affiliation(s)
- Tiffany J Glass
- Department of Surgery, University of Wisconsin-Madison, Madison, WI, United States
| | | | - Nadine P Connor
- Department of Surgery, University of Wisconsin-Madison, Madison, WI, United States.,Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, WI, United States
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Ferrary T, Sanchez Ratto N, Martinez D, Alvarez M, Bianchi ML, Benitez MB, Armada M, Echaide M, Scagnet G, Orman B. Psychoprophylaxis for oral conscious sedation for dental care in Down syndrome adults with behavioral disorder. SPECIAL CARE IN DENTISTRY 2019; 39:389-398. [DOI: 10.1111/scd.12382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/26/2019] [Accepted: 04/18/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Teresita Ferrary
- Department of Internal Medicine (Area Disability)Facultad de Odontología, Universidad de Buenos AiresBuenos Aires, Argentina
| | - Noelia Sanchez Ratto
- Department of Internal Medicine (Area Disability)Facultad de Odontología, Universidad de Buenos AiresBuenos Aires, Argentina
| | - Daniel Martinez
- Department of Internal Medicine (Area Disability)Facultad de Odontología, Universidad de Buenos AiresBuenos Aires, Argentina
| | - Mayra Alvarez
- Department of Internal Medicine (Area Disability)Facultad de Odontología, Universidad de Buenos AiresBuenos Aires, Argentina
| | - Maria Lis Bianchi
- Department of Internal Medicine (Area Disability)Facultad de Odontología, Universidad de Buenos AiresBuenos Aires, Argentina
| | - Maria Belen Benitez
- Department of PharmacologyFacultad de Odontología, Universidad de Buenos AiresBuenos Aires, Argentina
| | - Mariana Armada
- Department of Internal Medicine (Area Disability)Facultad de Odontología, Universidad de Buenos AiresBuenos Aires, Argentina
| | - Maite Echaide
- Department of Internal Medicine (Area Disability)Facultad de Odontología, Universidad de Buenos AiresBuenos Aires, Argentina
| | - Gabriela Scagnet
- Department of Internal Medicine (Area Disability)Facultad de Odontología, Universidad de Buenos AiresBuenos Aires, Argentina
| | - Betina Orman
- Department of PharmacologyFacultad de Odontología, Universidad de Buenos AiresBuenos Aires, Argentina
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Lunsky Y, De Oliveira C, Wilton A, Wodchis W. High health care costs among adults with intellectual and developmental disabilities: a population-based study. JOURNAL OF INTELLECTUAL DISABILITY RESEARCH : JIDR 2019; 63:124-137. [PMID: 30381849 DOI: 10.1111/jir.12554] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 08/27/2018] [Accepted: 09/12/2018] [Indexed: 05/08/2023]
Abstract
OBJECTIVE While it is generally accepted that adults with intellectual and developmental disabilities (IDDs) use health services to a greater extent than the general population, there is remarkably little research that focuses on the costs associated with their health care. Using population-based data from adults with IDD in Ontario, this study aimed to estimate overall health care costs, classify individuals into high and non-high cost categories and describe differences in the demographics, clinical profiles and health care use patterns between these groups. DESIGN A retrospective cohort study based in Ontario, Canada, was conducted with the use of linked administrative health data. METHODS A costing algorithm developed for the general population in Ontario was applied to estimate health care costs of adults with IDD under age 65 for 2009 and 2010. Individuals were categorised into two groups according to whether their total annual health care costs were among the highest decile in the general population. These groups were compared on demographic and clinical variables, and relative mean costs for six types of health care services in the two groups were computed. In addition, we computed the proportion of individuals who remained in the high cost group over 2 years. RESULTS Among adults with IDD, 36% had annual health care expenditures greater than $2610 CAD (top decile of all Ontario adults under 65). These individuals were more likely to be female, to be in the oldest age groups, to live in group homes and to be receiving disability income support than individuals whose expenditures were below the high cost threshold. In addition, they had higher rates of all the physical and mental health conditions studied. Greatest health care expenses were due to hospitalisations, especially psychiatric hospitalisations, continuing care/rehabilitation costs and medication costs. The majority of individuals whose health care costs placed them in the high cost category in 2009 remained in that category a year later. DISCUSSION Adults with IDD are nearly 4 times as likely to incur high annual health care costs than those without IDD. Individuals with IDD and high health care costs have unique health and demographic profiles compared with adults with IDD whose annual health care costs are below the high cost threshold. Attending to their health care needs earlier in their health care trajectory may be an opportunity to improve health and reduce overall health care costs. It is important that we explore how to best meet their needs. Models proposed to meet the needs of adults with high health care costs in the general population may not apply to this unique group.
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Affiliation(s)
- Y Lunsky
- Azrieli Centre for Adult Neurodevelopmental Disabilities and Mental Health, Toronto, Ontario, Canada
- ICES, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - C De Oliveira
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- ICES, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | | | - W Wodchis
- ICES, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
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Horne RS, Wijayaratne P, Nixon GM, Walter LM. Sleep and sleep disordered breathing in children with down syndrome: Effects on behaviour, neurocognition and the cardiovascular system. Sleep Med Rev 2018; 44:1-11. [PMID: 30576943 DOI: 10.1016/j.smrv.2018.11.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 10/10/2018] [Accepted: 11/07/2018] [Indexed: 02/07/2023]
Abstract
Down syndrome (DS), the most common human chromosomal malformation, has an estimated annual incidence of one in 1000 live births worldwide. Sleep problems are common in children with DS, reported by parents in up to 65% of school-aged children, significantly higher rates than in typically developing (TD) children. Problems include difficulty in sleep initiation and maintenance together with obstructive sleep apnoea (OSA) which affects up to over 90%, of DS children compared with 1-5% in the general paediatric population. Any sleep problem has the potential to exert significant negative effects on daytime behaviour, learning and quality of life in TD children and there is now a growing body of evidence that children with DS are similarly affected. In addition to adverse effects on daytime functioning, OSA has adverse effects on the cardiovascular system and this is a particularly significant issue given the high rates of hypertension and premature cardiac disease in people with DS. This review discusses the effects of sleep problems and OSA on daytime functioning and cardiovascular function in children with DS and evidence of the effectiveness of treatment in improving outcomes and quality of life for these children.
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Affiliation(s)
- Rosemary Sc Horne
- The Ritchie Centre, Hudson Institute of Medical Research and Department of Paediatrics, Monash University, Melbourne, Australia.
| | - Poornima Wijayaratne
- The Ritchie Centre, Hudson Institute of Medical Research and Department of Paediatrics, Monash University, Melbourne, Australia
| | - Gillian M Nixon
- The Ritchie Centre, Hudson Institute of Medical Research and Department of Paediatrics, Monash University, Melbourne, Australia; Melbourne Children's Sleep Centre, Monash Children's Hospital, Melbourne, Victoria, Australia
| | - Lisa M Walter
- The Ritchie Centre, Hudson Institute of Medical Research and Department of Paediatrics, Monash University, Melbourne, Australia
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Ahmad F, Dar WM. Classification of Alzheimer's Disease Stages: An Approach Using PCA-Based Algorithm. Am J Alzheimers Dis Other Demen 2018; 33:433-439. [PMID: 30058341 PMCID: PMC10852453 DOI: 10.1177/1533317518790038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Early diagnosis of Alzheimer's disease (AD) allows individuals and their health managers to manage healthier medication. We proposed an approach for classification of AD stages, with respect to principal component analysis (PCA)-based algorithm. The PCA has been extensively applied as the most auspicious face-recognition algorithm. For the proposed algorithm, 100 images of 10 children were transformed for feature extraction and covariance matrix was constructed to obtain eigenvalues. The eigenvector provided a useful framework for face recognition. For the classification of AD stages, magnetic resonance imaging (MRI) and functional magnetic resonance imaging (fMRI) data were obtained from Alzheimer's Disease Neuroimaging Initiative database. Hippocampus is one of the most affected regions by AD. Thus, we selected clusters of voxels from the "hippocampus" of AD screening stage (mild cognitive impairment), AD stage 1, AD stage 2, and AD stage 3. By using eigenvectors corresponding to maximum eigenvalues of fMRI data, the purposed algorithm classified the voxels of AD stages effectively.
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Affiliation(s)
- Fayyaz Ahmad
- Department of Statistics, University of Gujrat, Gujrat, Pakistan
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