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  • 1
    In: G3 Genes|Genomes|Genetics, Oxford University Press (OUP), Vol. 5, No. 5 ( 2015-05-01), p. 719-740
    Abstract: The Muller F element (4.2 Mb, ~80 protein-coding genes) is an unusual autosome of Drosophila melanogaster; it is mostly heterochromatic with a low recombination rate. To investigate how these properties impact the evolution of repeats and genes, we manually improved the sequence and annotated the genes on the D. erecta, D. mojavensis, and D. grimshawi F elements and euchromatic domains from the Muller D element. We find that F elements have greater transposon density (25–50%) than euchromatic reference regions (3–11%). Among the F elements, D. grimshawi has the lowest transposon density (particularly DINE-1: 2% vs. 11–27%). F element genes have larger coding spans, more coding exons, larger introns, and lower codon bias. Comparison of the Effective Number of Codons with the Codon Adaptation Index shows that, in contrast to the other species, codon bias in D. grimshawi F element genes can be attributed primarily to selection instead of mutational biases, suggesting that density and types of transposons affect the degree of local heterochromatin formation. F element genes have lower estimated DNA melting temperatures than D element genes, potentially facilitating transcription through heterochromatin. Most F element genes (~90%) have remained on that element, but the F element has smaller syntenic blocks than genome averages (3.4–3.6 vs. 8.4–8.8 genes per block), indicating greater rates of inversion despite lower rates of recombination. Overall, the F element has maintained characteristics that are distinct from other autosomes in the Drosophila lineage, illuminating the constraints imposed by a heterochromatic milieu.
    Type of Medium: Online Resource
    ISSN: 2160-1836
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2015
    detail.hit.zdb_id: 2629978-1
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  • 2
    In: Age and Ageing, Oxford University Press (OUP), Vol. 51, No. 9 ( 2022-09-02)
    Abstract: falls and fall-related injuries are common in older adults, have negative effects on functional independence and quality of life and are associated with increased morbidity, mortality and health related costs. Current guidelines are inconsistent, with no up-to-date, globally applicable ones present. Objectives to create a set of evidence- and expert consensus-based falls prevention and management recommendations applicable to older adults for use by healthcare and other professionals that consider: (i) a person-centred approach that includes the perspectives of older adults with lived experience, caregivers and other stakeholders; (ii) gaps in previous guidelines; (iii) recent developments in e-health and (iv) implementation across locations with limited access to resources such as low- and middle-income countries. Methods a steering committee and a worldwide multidisciplinary group of experts and stakeholders, including older adults, were assembled. Geriatrics and gerontological societies were represented. Using a modified Delphi process, recommendations from 11 topic-specific working groups (WGs), 10 ad-hoc WGs and a WG dealing with the perspectives of older adults were reviewed and refined. The final recommendations were determined by voting. Recommendations all older adults should be advised on falls prevention and physical activity. Opportunistic case finding for falls risk is recommended for community-dwelling older adults. Those considered at high risk should be offered a comprehensive multifactorial falls risk assessment with a view to co-design and implement personalised multidomain interventions. Other recommendations cover details of assessment and intervention components and combinations, and recommendations for specific settings and populations. Conclusions the core set of recommendations provided will require flexible implementation strategies that consider both local context and resources.
    Type of Medium: Online Resource
    ISSN: 0002-0729 , 1468-2834
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2065766-3
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  • 3
    In: Rheumatology, Oxford University Press (OUP), Vol. 57, No. suppl_3 ( 2018-04-01)
    Type of Medium: Online Resource
    ISSN: 1462-0324 , 1462-0332
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2018
    detail.hit.zdb_id: 1474143-X
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  • 4
    In: Rheumatology, Oxford University Press (OUP), Vol. 61, No. Supplement_1 ( 2022-04-23)
    Abstract: Distal radius fractures (DRF) are common fall-related fragility fractures disproportionately affecting older females. After a DRF, there is an increased risk of future fragility fractures and functional decline. Systematic review evidence shows balance and muscle strengthening exercises reduce falls in older adults. Despite this, existing DRF rehabilitation trials have mainly focused on upper limb impairments. To inform rehabilitation requirements, we aimed to 1.) compare lower limb muscle strength and balance between older adults with a DRF with age- and sex-matched controls, and 2.) synthesise lower limb muscle strength and balance outcomes in older adults with a DRF. Methods We searched Embase, MEDLINE and CINAHL (1990 to August 2021). We included randomised and non-randomised controlled trials, and observational studies, that assessed lower limb strength and/or balance in adults aged ≥50 years enrolled within one year after a DRF. Strength and balance had to be assessed using validated instrumented or physical performance measures. Two reviewers independently screened titles and abstracts, and full-text reports of potentially eligible studies. One reviewer extracted data, then checked by another. Two reviewers independently appraised studies using the Cochrane risk-of-bias tool or Newcastle-Ottawa scale. We synthesised results narratively due to heterogeneity. PROSPERO registration: CRD42020196274. Results Seventeen studies (10 case-control studies, three RCTs and four case-series) including 1112 participants (95% women) with a DRF were included. Participants’ mean age ranged from 56 to 73 years; median sample size was 80 (IQR 54-106). Eleven (65%) studies assessed lower limb muscle strength using 10 different methods. Knee extensor strength assessment was most common (5/11 studies) followed by the 30-second and five times sit-to-stand tests (3/11 studies). All studies assessed balance, using 14 different methods. Single leg balance assessment was most common (6/17 studies) followed by functional reach and postural sway (3/17 studies). 5/10 case-control studies assessed lower limb muscle strength. Two studies found cases performed worse than controls during sit-to-stand tests; three studies assessed knee extensor strength with conflicting findings. All case-control studies assessed balance, with cases demonstrating impaired balance compared to controls on some measures. 4/17 studies assessed strength and 6/17 studies assessed balance at multiple timepoints. Over time, strength progressively improved in 3/4 studies but changes in balance were inconsistent across studies. Conclusion There is some evidence that older adults with a DRF have impaired lower limb muscle strength and balance compared to age- and sex-matched controls, but findings are inconsistent. Synthesis of results was limited by heterogeneity in the design, quality, and assessment methods used in included studies. Large-scale robust case-control and/or prospective observational studies are needed to better establish the rehabilitation requirements for this population. Disclosure C. Forde: Grants/research support; CF is supported by the NIHR Biomedical Research Centre, based at Oxford University Hospitals Trust, Oxford. P.J.A. Nicolson: Grants/research support; PN is supported by a Versus Arthritis Foundation Fellowship (ref. 22428). C. Vye: None. J.C.H. Pun: Grants/research support; JP received financial support from the NMAHPs Internship Versus Arthritis (Grant reference 22082). W. Sheehan: None. M. Costa: Grants/research support; MC receives grants from NIHR and related health charities. S.E. Lamb: Grants/research support; SL receives grants from NIHR and related health charities. D.J. Keene: Grants/research support; DK is supported by a National Institute of Health Research (NIHR) Postdoctoral Fellowship (ref. PDF-2016-09-056) and by the NIHR Biomedical Research Centre, based at Oxford University Hospitals Trust.
    Type of Medium: Online Resource
    ISSN: 1462-0324 , 1462-0332
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
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  • 5
    In: Rheumatology, Oxford University Press (OUP), Vol. 57, No. suppl_3 ( 2018-04-01)
    Type of Medium: Online Resource
    ISSN: 1462-0324 , 1462-0332
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2018
    detail.hit.zdb_id: 1474143-X
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  • 6
    Online Resource
    Online Resource
    Oxford University Press (OUP) ; 2006
    In:  Age and Ageing Vol. 35, No. 1 ( 2006-01-01), p. 5-10
    In: Age and Ageing, Oxford University Press (OUP), Vol. 35, No. 1 ( 2006-01-01), p. 5-10
    Type of Medium: Online Resource
    ISSN: 1468-2834 , 0002-0729
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2006
    detail.hit.zdb_id: 2065766-3
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  • 7
    In: The Journals of Gerontology: Series A, Oxford University Press (OUP), Vol. 77, No. 12 ( 2022-12-29), p. 2435-2444
    Abstract: Older people with cognitive impairment (CI) are at high risk for mobility limitations and adverse outcomes after discharge from geriatric rehabilitation settings. The aim was to estimate the effects of a specifically designed home-based physical training and activity promotion program on physical capacity, different aspects of physical activity (PA), and psychosocial status. Methods Patients with mild to moderate CI (Mini-Mental State Examination [MMSE]: 17–26 points) discharged home after rehabilitation were included in this randomized, double-blind, placebo-controlled trial with a 12-week intervention and 12-week follow-up period. The intervention group performed a CI-specific, autonomous, home-based strength, balance, and walking training supported by tailored motivational strategies to foster training adherence and promote PA. The control group participated in an unspecific motor placebo activity. Primary outcomes were physical capacity (Short Physical Performance Battery [SPPB] ) and PA (sensor-based activity time). Results Among 118 randomized participants (82.3 ± 6.0 years) with CI (MMSE: 23.3 ± 2.4) and high levels of multimorbidity, those participants undergoing home-based training demonstrated superior outcomes to the control group in SPPB (mean difference between groups 1.9 points; 95% CI: 1.0–2.8; p & lt; .001), with persistent benefits over the follow-up (1.3 points; 95% CI: 0.4–2.2; p & lt; .001). There were no differences in PA across any time points. Among secondary outcomes, fear of falling and activity avoidance behavior were reduced in the intervention group at all time points, life-space mobility improved short-term. Conclusions The results demonstrate clinically important benefits of an individually tailored autonomous physical training and activity promotion program on physical capacity and secondary outcomes in different domains in a vulnerable, multimorbid population. Clinical Trial Registration ISRCTN82378327
    Type of Medium: Online Resource
    ISSN: 1079-5006 , 1758-535X
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2043927-1
    SSG: 12
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  • 8
    Online Resource
    Online Resource
    Oxford University Press (OUP) ; 2022
    In:  The Journals of Gerontology: Series A Vol. 77, No. 11 ( 2022-11-21), p. 2342-2342
    In: The Journals of Gerontology: Series A, Oxford University Press (OUP), Vol. 77, No. 11 ( 2022-11-21), p. 2342-2342
    Type of Medium: Online Resource
    ISSN: 1079-5006 , 1758-535X
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2043927-1
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  • 9
    In: The Journals of Gerontology: Series A, Oxford University Press (OUP), Vol. 76, No. 9 ( 2021-08-13), p. e203-e212
    Abstract: To study the effects of exercise on falls, fractures, hospitalizations, and death in people with dementia. Method We conducted an individual-level patient data meta-analysis of 7 randomized controlled trials (RCTs). We looked for studies from the reference list of previous systematic reviews and undertook an electronic search for articles published between 2013 and 2019 in Ageline, CENTRAL, PsycINFO, PubMed, and SportsDiscus. Main (binary) outcome measures were the risk of mortality, hospitalization, faller, multiple faller, injurious faller, and fractures. Secondary (count) outcomes were the incident rates of hospitalizations, falls, and injurious falls. Results From the 1314 participants, 771 were allocated to the exercise group and 543 to the control group. The number of cases regarding the main outcome measures in exercisers and controls were, respectively: 45 (5.8%) and 31 (5.7%) deaths; 102 (14.4%) and 65 (13.4%) participants hospitalized; 221 (34.4%) and 175 (41.3%) had at least 1 fall; 128 (20.2%) and 92 (21.7%) had multiple falls; 78 (24.8%) and 92 (29.3%) had injurious falls; and 19 (2.9%) and 15 (3.5%) had suffered a fracture. Two-step meta-analysis found no effects of exercise on any outcome. One-step meta-analysis found exercise reduced the risk of falls (odds ratio 0.75; 95% CI: 0.57–0.99). Exploratory analysis showed exercise decreased the rate of incident falls in participants with the lowest functional ability (incident rate ratio 0.48; 95% CI: 0.30–0.79). Conclusions Although the 2-step meta-analysis suggests exercise does not have an effect on the outcomes, 1-step meta-analysis suggested that exercise may reduce fall risk. Data from further high-quality RCTs are still needed.
    Type of Medium: Online Resource
    ISSN: 1079-5006 , 1758-535X
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2021
    detail.hit.zdb_id: 2043927-1
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  • 10
    In: The Journals of Gerontology: Series A, Oxford University Press (OUP), Vol. 77, No. 8 ( 2022-08-12), p. 1654-1664
    Abstract: Neurogenic claudication (NC) is a debilitating spinal condition affecting older adults’ mobility and quality of life. Methods A randomized controlled trial of 438 participants evaluated the effectiveness of a physical and psychological group intervention (BOOST program) compared to physiotherapy assessment and tailored advice (best practice advice [BPA]) for older adults with NC. Participants were identified from spinal clinics (community and secondary care) and general practice records and randomized 2:1 to the BOOST program or BPA. The primary outcome was the Oswestry Disability Index (ODI) at 12 months. Data were also collected at 6 months. Other outcomes included ODI walking item, 6-minute walk test (6MWT), and falls. The primary analysis was intention-to-treat. Results The average age of participants was 74.9 years (standard deviation [SD] 6.0) and 57% (246/435) were female. There was no significant difference in ODI scores between treatment groups at 12 months (adjusted mean difference [MD] : −1.4 [95% confidence intervals (CI) −4.03, 1.17]), but, at 6 months, ODI scores favored the BOOST program (adjusted MD: −3.7 [95% CI −6.27, −1.06] ). At 12 months, the BOOST program resulted in greater improvements in walking capacity (6MWT MD: 21.7m [95% CI 5.96, 37.38]) and ODI walking item (MD: −0.2 [95% CI −0.45, −0.01] ) and reduced falls risk (odds ratio: 0.6 [95% CI 0.40, 0.98]) compared to BPA. No serious adverse events were related to either treatment. Conclusions The BOOST program substantially improved mobility for older adults with NC. Future iterations of the program will consider ways to improve long-term pain-related disability. Clinical Trials Registration Number: ISRCTN12698674
    Type of Medium: Online Resource
    ISSN: 1079-5006 , 1758-535X
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2043927-1
    SSG: 12
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