Research output per year
Research output per year
- 1 - 50 out of 81 results
Search results
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2025
Aprosopsia: a novel metamorphopsia variant occurring in Parkinson's disease psychosis
Reddy, A. B. S., Pisani, S., Kuruppu, S., Bhattacharyya, S., Ffytche, D. H. & Velayudhan, L., 19 Mar 2025, In: Journal of Neurology. 272, 4, p. 277 277.Research output: Contribution to journal › Letter › peer-review
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Decline in striatal binding ratio associated with accelerated decline in performance on symbol digit modality but not MoCA in Parkinson's Disease Psychosis
Pisani, S., Velayudhan, L., Aarsland, D., Ray Chaudhuri, K., Ballard, C., Ffytche, D. & Bhattacharyya, S., 31 Mar 2025, In: BMJ mental health. 28, 1, 301430.Research output: Contribution to journal › Article › peer-review
Open Access -
Depression symptom-specific genetic associations in clinically diagnosed and proxy case Alzheimer’s disease
Gilchrist, L., Spargo, T. P., Green, R. E., Coleman, J. R. I., Howard, D. M., Thorp, J. G., Adey, B. N., Lord, J., Davies, H. L., Mundy, J., ter Kuile, A. R., Davies, M. R., Hübel, C., Bristow, S., Lee, S. H., Rogers, H., Curtis, C., Kakar, S., Malouf, C. M. & Kalsi, G. & 14 others, , Feb 2025, In: Nature Mental Health . 3, 2, p. 212-228 17 p., 160.Research output: Contribution to journal › Article › peer-review
Open AccessFile1 Downloads (Pure) -
2024
Cannabidiol for behavior symptoms in Alzheimer's disease (CANBiS-AD): a randomized, double-blind, placebo-controlled trial
Velayudhan, L., Dugonjic, M., Pisani, S., Harborow, L., Aarsland, D., Bassett, P. & Bhattacharyya, S., 1 Dec 2024, In: International Psychogeriatrics. 36, 12, p. 1270-1272 3 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile3 Citations (Scopus)193 Downloads (Pure) -
Clinical characteristics of early-onset versus late-onset Alzheimer's disease: a systematic review and meta-analysis
Seath, P., Macedo-Orrego, L. E. & Velayudhan, L., 27 Nov 2024, In: International Psychogeriatrics.Research output: Contribution to journal › Review article › peer-review
Open Access -
Daily cannabis use and cognitive impairment in community residents aged 50 and over
Rao, R., Velayudhan, L., Creese, B., Aarsland, D., Lewis, C., Kalafatis, C., Khan, Z., Corbett, A. & Ballard, C., 2 Aug 2024, (E-pub ahead of print) In: Journal of Substance Use.Research output: Contribution to journal › Article › peer-review
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Functional and connectivity correlates associated with Parkinson’s disease psychosis: a systematic review
Pisani, S., Gunasekera, B., Lu, Y., Vignando, M., Ffytche, D., Aarsland, D., Chaudhuri, K. R., Ballard, C., Lee, J. Y., Kim, Y. K., Velayudhan, L. & Bhattacharyya, S., 2024, In: Brain Communications. 6, 6, fcae358.Research output: Contribution to journal › Review article › peer-review
Open Access2 Citations (Scopus) -
Psilocybin for dementia prevention? The potential role of psilocybin to alter mechanisms associated with major depression and neurodegenerative diseases
Haniff, Z. R., Bocharova, M., Mantingh, T., Rucker, J. J., Velayudhan, L., Taylor, D. M., Young, A. H., Aarsland, D., Vernon, A. C. & Thuret, S., Jun 2024, In: Pharmacology and Therapeutics. 258, 108641.Research output: Contribution to journal › Review article › peer-review
Open Access6 Citations (Scopus) -
Role of behavioral problems in carer burden in young-onset dementia
Velayudhan, L., 1 Jun 2024, In: International Psychogeriatrics. 36, 6, p. 440-443 4 p.Research output: Contribution to journal › Comment/debate › peer-review
Open Access -
The impact of the first COVID-19 lockdown on presentations with depressive symptoms in older people - an electronic health records study
Velayudhan, L., Cheung, W. Y., Perera, G., Stewart, R. & Mueller, C., 1 Nov 2024, In: International Psychogeriatrics. 36, 11, p. 1076- 1078 3 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile21 Downloads (Pure) -
The SLaM Brain Health Clinic: a remote biomarker enhanced memory clinic for patients with mild cognitive impairment within an NHS mental health trust
Venkataraman, A., Kandangwa, P., Lemmen, R., Savla, R., Beigi, M., Hammond, D., Harwood, D., Sauer, J., Velayudhan, L., Ballard, C., Brem, A.-K., Kalafatis, C. & Aarsland, D., 19 Dec 2024, In: BJPsych Open.Research output: Contribution to journal › Article › peer-review
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2023
Apathy and Depression as Risk Factors for Dementia Conversion in Mild Cognitive Impairment
Velayudhan, L., Nov 2023, In: International Psychogeriatrics.Research output: Contribution to journal › Comment/debate › peer-review
4 Citations (Scopus) -
Clinical characteristics of early-onset versus late-onset Alzheimer’s disease: a systematic review and meta-analysis
Seath, P., Macedo-Orrego, L. E. & Velayudhan, L., 2023, In: International Psychogeriatrics.Research output: Contribution to journal › Review article › peer-review
Open Access7 Citations (Scopus) -
Complement system changes in blood in Parkinson's disease and progressive Supranuclear Palsy/Corticobasal Syndrome
Khosousi, S., Hye, A., Velayudhan, L., Bloth, B., Tsitsi, P., Markaki, I. & Svenningsson, P., Mar 2023, In: Parkinsonism and Related Disorders. 108, 105313.Research output: Contribution to journal › Article › peer-review
10 Citations (Scopus) -
Grey matter volume loss in Parkinson’s Disease Psychosis and its relationship with serotonergic gene expression: A meta-analysis
Pisani, S., Gunasekera, B., Lu, Y., Vignando, M., Ffytche, D., Aarsland, D., Chaudhuri, K. R., Ballard, C., Lee, J.-Y., Kim, Y. K., Velayudhan, L. & Bhattacharyya, S., Apr 2023, In: Neuroscience and Biobehavioral Reviews. 147, 105081.Research output: Contribution to journal › Review article › peer-review
Open Access7 Citations (Scopus) -
Implications of Adverse Outcomes Associated with Antipsychotics in Older Patients with Dementia: A 2011–2022 Update
Rogowska, M., Thornton, M., Creese, B., Velayudhan, L., Aarsland, D., Ballard, C., Tsamakis, K., Stewart, R. & Mueller, C., Jan 2023, In: Drugs and Aging. 40, 1, p. 21-32 12 p.Research output: Contribution to journal › Review article › peer-review
Open Access41 Citations (Scopus) -
Microglial activation, tau and amyloid deposition in TREM2 p.R47H carriers and mild cognitive impairment patients: a multi-modal/multi-tracer PET/MRI imaging study with influenza vaccine immune challenge
Cousins, O., Schubert, J. J., Chandra, A., Veronese, M., Valkimadi, P., Creese, B., Khan, Z., Arathimos, R., Hampshire, A., Rosenzweig, I., Ballard, C., Corbett, A., Aasland, D., Velayudhan, L., O’Neill, M., Collier, D., Awais, R., Sander, K., Årstad, E. & Howes, O. & 2 others, , 21 Nov 2023, In: Journal of neuroinflammation. 20, 1, p. 272 272.Research output: Contribution to journal › Article › peer-review
Open AccessFile2 Citations (Scopus)52 Downloads (Pure) -
Relationship between neuropsychiatric symptoms, cognition, and neuroimaging in mild cognitive impairment: Are we there yet?
Velayudhan, L., 1 Nov 2023, In: International Psychogeriatrics. 35, 11, p. 595-597 3 p.Research output: Contribution to journal › Article › peer-review
1 Citation (Scopus) -
2022
A retrospective analysis of patient flow in mental health services for older adults in South London during the COVID-19 pandemic
Mueller, C., Perera, G., Broadbent, M., Stewart, R. & Velayudhan, L., 10 Mar 2022, In: International Psychogeriatrics. 34, 3, p. 297-298 2 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile4 Citations (Scopus)93 Downloads (Pure) -
Disentangling Independent and Mediated Causal Relationships Between Blood Metabolites, Cognitive Factors, and Alzheimer's Disease
Alzheimer’s Disease Neuroimaging Initiative & GERAD1 Consortium, and AddNeuroMed, Apr 2022, In: Biological Psychiatry Global Open Science. 2, 2, p. 167-179 13 p.Research output: Contribution to journal › Article › peer-review
Open Access8 Citations (Scopus) -
Loneliness in older adult mental health services during the COVID-19 pandemic and before: Associations with disability, functioning and pharmacotherapy
Greig, F., Perera, G., Tsamakis, K., Stewart, R., Velayudhan, L. & Mueller, C., Jan 2022, In: International Journal of Geriatric Psychiatry. 37, 1, GPS5630.Research output: Contribution to journal › Article › peer-review
Open AccessFile23 Citations (Scopus)122 Downloads (Pure) -
Patient and Caregiver Experiences of Participating in Parkinson's Disease Clinical Trials: A Systematic Review of Qualitative Studies
Gorzynska, O., McGoohan, K. & Velayudhan, L., 1 May 2022, In: Archives of Clinical Neuropsychology. 37, 3, p. 654-676 23 p.Research output: Contribution to journal › Article › peer-review
Open Access7 Citations (Scopus) -
The impact of the first COVID-19 lockdown on presentations with depressive symptoms in older people - an electronic health records study
Velayudhan, L., Cheung, W. Y., Perera, G., Stewart, R. & Mueller, C., Aug 2022, In: International Psychogeriatrics. 36, 11, p. 1-3 3 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile1 Citation (Scopus)44 Downloads (Pure) -
The impact of the first UK COVID-19 lockdown on presentations with psychosis to mental health services for older adults: An electronic health records study in South London
Simkin, L., Yung, P., Greig, F., Perera, G., Tsamakis, K., Rizos, E., Stewart, R., Velayudhan, L. & Mueller, C., Dec 2022, In: International Journal of Geriatric Psychiatry. 37, 12, GPS5834.Research output: Contribution to journal › Article › peer-review
Open Access2 Citations (Scopus) -
The impact of the first UK COVID‐19 lockdown on presentations with psychosis to mental health services for older adults: An electronic health records study in South London
Simkin, L., Yung, P., Greig, F., Perera, G., Tsamakis, K., Rizos, E., Stewart, R., Velayudhan, L. & Mueller, C., 17 Oct 2022, (Accepted/In press) In: International Journal of Geriatric Psychiatry.Research output: Contribution to journal › Article › peer-review
Open AccessFile68 Downloads (Pure) -
2021
A genome-wide association study with 1,126,563 individuals identifies new risk loci for Alzheimer's disease
23andMe Research Team, Wightman, D. P., Jansen, I. E., Savage, J. E., Shadrin, A. A., Bahrami, S., Holland, D., Rongve, A., Børte, S., Winsvold, B. S., Drange, O. K., Martinsen, A. E., Skogholt, A. H., Willer, C., Bråthen, G., Bosnes, I., Nielsen, J. B., Fritsche, L. G., Thomas, L. F. & Pedersen, L. M. & 31 others, , 7 Sept 2021, In: Nature Genetics. 53, 9, p. 1276-1282 7 p.Research output: Contribution to journal › Article › peer-review
534 Citations (Scopus) -
A multicentre validation study of the diagnostic value of plasma neurofilament light
Ashton, N. J., Janelidze, S., Al Khleifat, A., Leuzy, A., van der Ende, E. L., Karikari, T. K., Benedet, A. L., Pascoal, T. A., Lleó, A., Parnetti, L., Galimberti, D., Bonanni, L., Pilotto, A., Padovani, A., Lycke, J., Novakova, L., Axelsson, M., Velayudhan, L., Rabinovici, G. D. & Miller, B. & 21 others, , 7 Jun 2021, In: Nature Communications. 12, 1, 3400.Research output: Contribution to journal › Article › peer-review
Open Access325 Citations (Scopus) -
A Review of Functional Neuroimaging in People with Down Syndrome with and without Dementia
Deinde, F., Kotecha, J., Lau, L. S. L., Bhattacharyya, S. & Velayudhan, L., 27 Dec 2021, In: Dementia and Geriatric Cognitive Disorders Extra. 11, 3, p. 324-332 9 p.Research output: Contribution to journal › Article › peer-review
Open Access3 Citations (Scopus) -
Author Correction: A genome-wide association study with 1,126,563 individuals identifies new risk loci for Alzheimer's disease
23andMe Research Team, Dec 2021, In: Nature genetics. 53, 12, p. 1722 1 p.Research output: Contribution to journal › Article › peer-review
Open Access3 Citations (Scopus) -
Evaluation of THC-Related Neuropsychiatric Symptoms Among Adults Aged 50 Years and Older: A Systematic Review and Metaregression Analysis
Velayudhan, L., McGoohan, K. L. & Bhattacharyya, S., 1 Feb 2021, In: JAMA Network open. 4, 2, p. e2035913Research output: Contribution to journal › Article › peer-review
Open Access25 Citations (Scopus) -
Hippocampal functional connectivity in Alzheimer's disease: a resting state 7T fMRI study
Velayudhan, L., Francis, S., Dury, R., Paul, S., Bestwn, S., Gowland, P. & Bhattacharyya, S., Jan 2021, In: International Psychogeriatrics. 33, 1, p. 95-96 2 p.Research output: Contribution to journal › Letter › peer-review
3 Citations (Scopus) -
Loneliness in older adult mental health services during the COVID-19 pandemic and before: Associations with disability, functioning and pharmacotherapy
Greig, F., Perera, G., Tsamakis, K., Stewart, R., Velayudhan, L. & Mueller, C., 6 Oct 2021, In: International Journal of Geriatric Psychiatry. 37, 1, p. 1-8 8 p., PMID: 34614534 PMCID: PMC8646648 DOI: 10.1002/gps.5630.Research output: Contribution to journal › Article › peer-review
Open AccessFile57 Downloads (Pure) -
Mortality among mental health services for older adults during the COVID-19 pandemic: a retrospective analysis from South London
Perera, G., Mueller, C., Broadbent, M., Stewart, R. & Velayudhan, L., May 2021, In: International Psychogeriatrics. 33, 5, p. 527-528 2 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile2 Citations (Scopus)96 Downloads (Pure) -
Predictive Factors for Conversion to Dementia in Individuals with Early-Onset Mild Cognitive Impairment
Baird, K., Baillon, S., Lau, L. S. L., Storey, M., Lindesay, J. & Velayudhan, L., 22 Dec 2021, (E-pub ahead of print) In: Dementia and Geriatric Cognitive Disorders. p. 1-6 6 p.Research output: Contribution to journal › Article › peer-review
Open Access4 Citations (Scopus) -
Safety and tolerability of natural and synthetic cannabinoids in adults aged over 50 years: A systematic review and meta-analysis
Velayudhan, L., McGoohan, K. & Bhattacharyya, S., 21 Mar 2021, In: PLoS Medicine. 18, 3Research output: Contribution to journal › Article › peer-review
Open Access -
Safety and Tolerability of Natural and Synthetic Cannabinoids in Older Adults: A Systematic Review and Meta-Analysis of Open-Label Trials and Observational Studies
Pisani, S., McGoohan, K., Velayudhan, L. & Bhattacharyya, S., Oct 2021, In: Drugs and Aging. 38, 10, p. 887-910 24 p.Research output: Contribution to journal › Review article › peer-review
13 Citations (Scopus) -
2020
A Preliminary Investigation of the Views of People With Parkinson's (With and Without Psychosis) and Caregivers on Participating in Clinical Trials During the Covid-19 Pandemic: An Online Survey
McGoohan, K., Amjad, A., Ratcliffe, N., Bhattacharyya, S., Granville, G., Sullivan, M., Gosden, L., Aarsland, D., Chaudhuri, K. R., Ffytche, D., Ballard, C. & Velayudhan, L., 23 Dec 2020, In: Frontiers in Psychiatry. 11, p. 602480Research output: Contribution to journal › Article › peer-review
Open Access1 Citation (Scopus) -
A preliminary investigation of the views of people with Parkinson’s disease psychosis and caregivers on participating in clinical trials during the COVID-19 pandemic: an online survey
McGoohan, K., Amjad, A., Ratcliffe, N., Bhattacharyya, S., Granville, G., Sullivan, M., Gosden, L., Aarsland, D., Chaudhuri, K., Ffytche, D., Ballard, C. & Velayudhan, L., 23 Dec 2020, In: Frontiers in Psychiatry.Research output: Contribution to journal › Article › peer-review
Open Access -
Implementing Remote Memory Clinics to Enhance Clinical Care During and After COVID-19
Owens, A. P., Ballard, C., Beigi, M., Kalafatis, C., Brooker, H., Lavelle, G., Bronnick, K. K., Sauer, J., Boddington, S., Velayudhan, L. & Aarsland, D., 18 Sept 2020, In: Frontiers in Psychiatry. 11, p. 579934 579934.Research output: Contribution to journal › Article › peer-review
Open Access47 Citations (Scopus) -
Integrated lipidomics and proteomics network analysis highlights lipid and immunity pathways associated with Alzheimer's disease
AddNeuroMed Consortium, 21 Sept 2020, In: Translational Neurodegeneration. 9, 1, p. 36 36.Research output: Contribution to journal › Article › peer-review
Open Access42 Citations (Scopus) -
Mental health of people living with dementia in care homes during COVID-19 pandemic
Velayudhan, L., Aarsland, D. & Ballard, C., Oct 2020, In: International Psychogeriatrics. 32, 10, p. 1253-1254 2 p.Research output: Contribution to journal › Letter › peer-review
Open Access50 Citations (Scopus) -
Metabolic Effects of Breaking Prolonged Sitting With Standing or Light Walking in Older South Asians and White Europeans: A Randomized Acute Study
Yates, T., Edwardson, C. L., Celis-Morales, C., Biddle, S. J. H., Bodicoat, D., Davies, M. J., Esliger, D., Henson, J., Kazi, A., Khunti, K., Sattar, N., Sinclair, A. J., Rowlands, A., Velayudhan, L., Zaccardi, F. & Gill, J. M. R., Jan 2020, In: Journals of Gerontology Series. A, Biological Sciences and Medical Sciences. 75, 1, p. 139-146 8 p.Research output: Contribution to journal › Article › peer-review
Open Access55 Citations (Scopus) -
Neuropsychiatric Symptoms in Mild Cognitive Impairment: A Literature Review
Martin, E. & Velayudhan, L., 1 Oct 2020, In: Dementia and Geriatric Cognitive Disorders. 49, 2, p. 146-155 10 p.Research output: Contribution to journal › Review article › peer-review
119 Citations (Scopus) -
Predictors of Disease Progression in Early-Onset Alzheimer's Dementia: A Retrospective Cohort Study
Velayudhan, L., Baillon, S., Daby, L., Suntharamoorthy, P., Kablan, A., Tromans, S. & Lindesay, J., Nov 2020, In: Journal Of The American Medical Directors Association. 21, 11, p. 1735-1739 5 p.Research output: Contribution to journal › Article › peer-review
7 Citations (Scopus) -
Predictors of the Acute Postprandial Response to Breaking Up Prolonged Sitting
Henson, J., Edwardson, C. L., Celis-Morales, C. A., Davies, M. J., Dunstan, D. W., Esliger, D. W., Gill, J. M. R., Kazi, A., Khunti, K., King, J., McCarthy, M., Sattar, N., Stensel, D. J., Velayudhan, L., Zaccardi, F. & Yates, T., Jun 2020, In: Medicine and Science in Sports and Exercise. 52, 6, p. 1385-1393 9 p.Research output: Contribution to journal › Article › peer-review
10 Citations (Scopus) -
Psychiatric and neuropsychiatric syndromes and COVID-19
Velayudhan, L., Aarsland, D. & Ballard, C., Aug 2020, In: The lancet. Psychiatry. 7, 8, p. 663-664 2 p.Research output: Contribution to journal › Letter › peer-review
Open Access6 Citations (Scopus) -
2019
Prevalence and Severity of Neuropsychiatric Symptoms in Early- Versus Late-Onset Alzheimer's Disease
Baillon, S., Gasper, A., Wilson-Morkeh, F., Pritchard, M., Jesu, A. & Velayudhan, L., 1 Nov 2019, In: American Journal of Alzheimer's Disease & Other Dementias. 34, 7-8, p. 433-438 6 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile34 Citations (Scopus)335 Downloads (Pure) -
Smell identification function in early-onset Alzheimer's disease and mild cognitive impairment
Velayudhan, L., Wilson-Morkeh, F., Penney, E., Jesu, A. J. M., Baillon, S. & Brugha, T., Jul 2019, In: International Psychogeriatrics. 31, 7, p. 1065-1070Research output: Contribution to journal › Article › peer-review
Open AccessFile10 Citations (Scopus)407 Downloads (Pure) -
2018
Assessment and Management of Neuropsychiatric Symptoms in Parkinson's Disease
Mueller, C., Rajkumar, A. P., Wan, Y. M., Velayudhan, L., ffytche, D., Chaudhuri, K. R. & Aarsland, D., Jul 2018, In: CNS Drugs. 32, 7, p. 621-635 15 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile51 Citations (Scopus)1040 Downloads (Pure) -
Driving Cessation in Patients Attending a Young-Onset Dementia Clinic: A Retrospective Cohort Study
Velayudhan, L., Baillon, S., Urbaskova, G., McCulloch, L., Tromans, S., Storey, M., Lindesay, J. & Bhattacharyya, S., 2018, In: Dementia and Geriatric Cognitive Disorders Extra. 8, 1, p. 190-198 9 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile10 Citations (Scopus)167 Downloads (Pure)