Ahmet Turan ISIK

Prof. Dr. Ahmet Turan ISIK

orcid

Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 November 2016 in Ageing Research Reviews
Verified
Journal Article
Open access
PSPinar Soysal
Pinar Soysal
BSBrendon Stubbs
Brendon Stubbs
PLPaola Lucato
Paola Lucato
Claudio LuchiniClaudio Luchini
Claudio Luchini
MSMarco Solm
Marco Solm
Nicola VeroneseNicola Veronese
Nicola Veronese
The pathogenesis of frailty and the role of inflammation is poorly understood. We examined the evidence considering the relationship between inflammation and frailty through a systematic review and meta-analysis. A systematic literature search of papers providing data on inflammatory biomarkers and frailty was carried out in major electronic databases from inception until May 2016. From 1856 initial hits, 35 studies (32 cross-sectional studies n=3232 frail, n=11,483 pre-frail and n=8522 robust, and 563 pre-frail+robust; 3 longitudinal studies n=3402 participants without frailty at baseline) were meta-analyzed. Cross-sectional studies reported that compared to 6757 robust participants, both 1698 frail (SMD=1.00, 95%CI: 0.40-1.61) and 8568 pre-frail (SMD=0.33, 95%CI: 0.04-0.62) participants had significantly higher levels of C-reactive protein (CRP). Frailty (n=1057; SMD=1.12, 95%CI: 0.27-2.13) and pre-frailty (n=4467; SMD=0.56, 95%CI: 0.00-1.11) were associated with higher serum levels of interleukin-6 compared to people who were robust (n=2392). Frailty and pre-frailty were also significantly associated with elevated white blood cell and fibrinogen levels. In three longitudinal studies, higher serum CRP (OR=1.06, 95%CI: 0.78-1.44,) and IL-6 (OR=1.19, 95%CI: 0.87-1.62) were not associated with frailty. In conclusion, frailty and pre-frailty are associated with higher inflammatory parameters and in particular CRP and IL-6. Further longitudinal studies are needed.

19 February 2004 in Alimentary Pharmacology & Therapeutics
Verified
Journal Article
Open access
PDF file
AUA. Uygun
A. Uygun
AKA. Kadayifci
A. Kadayifci
AIAhmet Turan ISIK
Ahmet Turan ISIK
TOT. Ozgurtas
T. Ozgurtas
SDS. Deveci
S. Deveci
KDK. Dagalp
K. Dagalp
Summary: Background : Increased insulin resistance is the major pathogenic mechanism in the development of non‐alcoholic steatohepatitis.Aim : To investigate the therapeutic effect of metformin, a well‐known insulin‐sensitizing agent, in the treatment of non‐alcoholic steatohepatitis.Methods : Thirty‐six patients with non‐alcoholic steatohepatitis were randomized into two groups. The first group was given lipid and calorie‐restricted dietary treatment alone, and the second group was given metformin 850 mg b.d. plus dietary treatment, for 6 months. The changes in biochemical, sonographic and histological parameters were compared.Results : The mean serum alanine/aspartate aminotransferase, insulin and C‐peptide levels decreased and the index of insulin resistance improved significantly from baseline in the group given metformin. The mean changes in these parameters in the metformin group were significantly greater than those in the group given dietary treatment alone. Although more patients in the metformin group showed improvement in the necro‐inflammatory activity, compared with the group given dietary treatment alone, no significant differences in necro‐inflammatory activity or fibrosis were seen between the groups.Conclusion : The data suggest that improvement of the insulin sensitivity with metformin may improve the liver disease in patients with non‐alcoholic steatohepatitis.

1 May 2017 in Maturitas
Verified
Journal Article
Closed access
PSPinar Soysal
Pinar Soysal
AIAhmet Turan ISIK
Ahmet Turan ISIK
ACAndre F. Carvalho
Andre F. Carvalho
BFBrisa S. Fernandes
Brisa S. Fernandes
MSMarco Solm
Marco Solm
BSBrendon Stubbs
Brendon Stubbs

1 January 2017 in Diabetes Research and Clinical Practice
Verified
Journal Article
Closed access
AIAhmet Turan ISIK
Ahmet Turan ISIK
PSPinar Soysal
Pinar Soysal
AYAdnan Yay
Adnan Yay
CUCansu Usarel
Cansu Usarel

1 October 2010 in Clinical Interventions in Aging
Verified
Journal Article
Open access
AIAhmet Turan ISIK
Ahmet Turan ISIK
Peer reviewed article authored by (Ahmet Turan Isik). Read article or submit your manuscript for publishing.

1 October 2018 in Clinical Interventions in Aging
Verified
Journal Article
Open access
PDF file
EBEsra Ates Bulut
Esra Ates Bulut
PSPinar Soysal
Pinar Soysal
AIAhmet Turan ISIK
Ahmet Turan ISIK
Background: Geriatric syndromes are complex clinical manifestations that are not an isolated disease in older adults and have common risk factors within themselves. The syndromes are significant causes of mortality, morbidity, and increased health care costs. Objective: To determine the frequency of geriatric syndromes such as malnutrition, dementia, depression, falls, polypharmacy, urinary incontinence, pressure ulcer, sarcopenia, and frailty in community-dwelling older adults. Methods: A total of 2,816 patients, who applied to geriatric outpatient clinic and were evaluated by comprehensive geriatric assessment, were included in this cross-sectional retrospective study. Falls in the last year and urinary incontinence were recorded. Polypharmacy was accepted as concurrent use of more than four drugs. Diagnosis of dementia and depression was defined according to Diagnostic and Statistical Manual of Mental Disorders Fifth Edition diagnostic criteria. In addition, frailty and sarcopenia were evaluated according to Fried’s physical frailty scale and European Working Group on Sarcopenia criteria, respectively. Results: The frequency of polypharmacy was 54.5%, urinary incontinence 47.6%, malnutrition 9.6%, depression 35.1%, dementia 21.6%, falls 33.6%, sarcopenia 31.7%, and frailty 28.3%. When all the participants were divided into three groups (60–69, 70–79, ≥80 years), all syndromes were significantly increased with age, except for depression. While 20% of cases in 60–69 years age group did not have any syndromes, 48% of cases in ≥80 years had more than four syndromes simultaneously. Conclusion: The frequency and coincidence of geriatric syndromes, except for depression, increases with age. Therefore, clinicians other than geriatricians taking care of older people should be aware of these syndromes as well as their treatment mechanisms.