49 results on '"Markakis G."'
Search Results
2. The Distribution of Ground Spiders (Araneae, Gnaphosidae) along the Altitudinal Gradient of Crete, Greece: Species Richness, Activity and Altitudinal Range
- Author
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Chatzaki, M., Lymberakis, P., Markakis, G., and Mylonas, M.
- Published
- 2005
3. DATAbase_PlantsCOVID19 [dataset]
- Author
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Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos, Universidad de Sevilla. Departamento de Agronomía, AGR 268-Naturación Urbana e Ingeniería de Biosistemas, Pérez Urrestarazu, Luis, Kaltsidi, M.P., Nektarios, P.A., Markakis, G., Loges, V., Perini, K., Fernández Cañero, Rafael, Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos, Universidad de Sevilla. Departamento de Agronomía, AGR 268-Naturación Urbana e Ingeniería de Biosistemas, Pérez Urrestarazu, Luis, Kaltsidi, M.P., Nektarios, P.A., Markakis, G., Loges, V., Perini, K., and Fernández Cañero, Rafael
- Abstract
Dataset acquired for the study published in the article: “Particularities of having plants at home during the confinement due to the COVID-19 pandemic”. This study evaluated the role of having plants at home during the confinement period as a result of the COVID-19 pandemic that deprived people of freely visiting open green spaces. Preferences concerning the quantity of the desired vegetation as well as the ways in which the COVID-19 crisis affected the change of perceptions with regard to having plants at home were also evaluated. The dataset presents the responses to a questionnaire filled by 4205 participants, which provided an evaluation of the impact of indoor and outdoor plants on their emotional welfare considering behavioural, social, and demographic variables.
- Published
- 2023
4. Evaluation of Primary and Secondary Treated and Disinfected Wastewater Irrigation of Tomato and Cucumber Plants under Greenhouse Conditions, regarding Growth and Safety Considerations
- Author
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Manios, T., Papagrigoriou, I., Daskalakis, G., Sabathianakis, I., Terzakis, S., Maniadakis, K., and Markakis, G.
- Published
- 2006
5. Refining the Baveno VI elastography criteria for the definition of compensated advanced chronic liver disease
- Author
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Papatheodoridi, M. Hiriart, J.B. Lupsor-Platon, M. Bronte, F. Boursier, J. Elshaarawy, O. Marra, F. Thiele, M. Markakis, G. Payance, A. Brodkin, E. Castera, L. Papatheodoridis, G. Krag, A. Arena, U. Mueller, S. Cales, P. Calvaruso, V. de Ledinghen, V. Pinzani, M. Tsochatzis, E.A.
- Abstract
Background: The Baveno VI consensus proposed a dual liver stiffness (LS) by transient elastography threshold of 15 kPa for excluding and diagnosing compensated advanced chronic liver disease (cACLD) in the absence of other clinical signs. Herein, we aimed to validate these criteria in a real-world multicentre study. Methods: We included 5,648 patients (mean age 51 ± 13 years, 53% males) from 10 European liver centres who had a liver biopsy and LS measurement within 6 months. We included patients with chronic hepatitis C (n = 2,913, 52%), non-alcoholic fatty liver disease (NAFLD, n = 1,073, 19%), alcohol-related liver disease (ALD, n = 946, 17%) or chronic hepatitis B (n = 716, 13%). cACLD was defined as fibrosis stage ≥F3. Results: Overall, 3,606 (66%) and 987 (18%) patients had LS 15 kPa, respectively, while cACLD was histologically confirmed in 1,772 (31%) patients. The cut-offs of 15 kPa showed 75% sensitivity and 96% specificity to exclude and diagnose cACLD, respectively. Examining the ROC curve, a more optimal dual cut-off at 12 kPa, with 91% sensitivity and 92% specificity for excluding and diagnosing cACLD (AUC 0.87; 95% CI 0.86–0.88; p 15 kPa dual cut-offs, we found that the 12 kPa dual cut-offs have better diagnostic accuracy in cACLD. Lay summary: The term compensated advanced chronic liver disease (cACLD) was introduced in 2015 to describe the spectrum of advanced fibrosis and cirrhosis in asymptomatic patients. It was also suggested that cACLD could be diagnosed or ruled out based on specific liver stiffness values, which can be non-invasively measured by transient elastography. Herein, we assessed the suggested cut-off values and identified alternative values that offered better overall accuracy for diagnosing or ruling out cACLD. © 2020 European Association for the Study of the Liver
- Published
- 2021
6. Particularities of having plants at home during the confinement due to the COVID-19 pandemic.
- Author
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Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos, Pérez Urrestarazu, Luis, Kaltsidi, M.P., Nektarios, P.A., Markakis, G., Loges, V., Fernández Cañero, Rafael, Universidad de Sevilla. Departamento de Ingeniería Aeroespacial y Mecánica de Fluidos, Pérez Urrestarazu, Luis, Kaltsidi, M.P., Nektarios, P.A., Markakis, G., Loges, V., and Fernández Cañero, Rafael
- Abstract
The present study evaluated the role of having plants at home during the confinement period as a result of the COVID-19 pandemic that deprived people of freely visiting open green spaces. Preferences concerning the quantity of the desired vegetation as well as the ways in which the COVID-19 crisis affected the change of perceptions with regard to having plants at home were also evaluated. A questionnaire, which was filled by 4205 participants, provided an undistracted evaluation of the impact of indoor and outdoor plants on their emotional welfare considering behavioural, social, and demographic variables. The emotional state of the respondents was neutral and a significant proportion expressed positive emotions. Having indoor plants was correlated with more positive emotions, and confined inhabitants allocated more time for plant maintenance. By contrast, negative emotions prevailed in respondents who related to a positive COVID-19 case, which was more frequent in females and young participants living in small houses that received low levels of natural light and had few or no plants. A few indoor plants placed in strategic positions were also preferred compared with a high number of plants. By contrast, an increased amount of vegetation accompanied by living walls was preferred for outdoor settings. Living walls were considered as advantageous for increasing indoor vegetation, but they were also associated with technical and economical hurdles.
- Published
- 2021
7. Preliminary Results on Rearing of Sparus Aurata × Pagrus Pagrus Hybrids. Performance Comparison With the Parental Species
- Author
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Paspatis, M., Markakis, G., Koumoundouros, G., and Kentouri, M.
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- 1999
- Full Text
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8. Paraoxonase-1 and Symptomatic Status in Carotid Artery Disease
- Author
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Lioudaki, S. Verikokos, C. Kouraklis, G. Kontopodis, N. Markakis, G. Ioannou, C. Daskalopoulou, A. Perrea, D. Klonaris, C.
- Abstract
Background: Paraoxonase-1 (PON-1) is a high-density lipoprotein (HDL)-associated hydrolase that appears to have a protective action against atherosclerosis. The aim of our study is to identify whether PON-1 levels may be associated with the manifestation of symptoms in patients with carotid artery stenosis. Methods: We studied all patients who underwent carotid endarterectomy in the Vascular Surgery Department of Laikon Hospital, Athens, Greece, from July 2012 to July 2014. Medical history was recorded and PON-1 glucose, total cholesterol, HDL cholesterol, low-density lipoprotein cholesterol, and triglycerides levels were measured. Variables were compared between symptomatic and asymptomatic patients. A receiver operating characteristic (ROC) curve was constructed to evaluate the accuracy of PON-1 to predict symptoms. Results: A total of 74 patients were included, 41 were asymptomatic and the mean age was 68.5 years. The 2 groups appear to differ significantly with regards to the PON-1 levels, with the symptomatic group showing lower levels (5.3 ± 1.19 vs. 4.6 ± 1.36 ng/mL; P = 0.025). ROC analysis demonstrated an area under the curve of 0.654 (P = 0.023). Conclusions: Reduced PON-1 levels showed a significant association with symptomatic status, which was independent of other traditional cardiovascular factors. Further studies are required to prospectively assess the role of PON-1 in predicting cerebrovascular events in patients with carotid artery disease. © 2019 Elsevier Inc.
- Published
- 2020
9. Effect of nitrogen fertilization on cucumber downy mildew
- Author
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Papadaki, A.A., primary, Markakis, G., additional, Ladomenou, K., additional, Goumas, D., additional, and Magan, N., additional
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- 2019
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10. Abstract P5-07-10: Circulating microRNAs as early predictors of relapse in operable breast cancer
- Author
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Agelaki, S, primary, Papadaki, C, additional, Stratigos, M, additional, Spiliotaki, M, additional, Markakis, G, additional, Mastrostamatis, G, additional, Mavroudis, D, additional, and Ioannis, S, additional
- Published
- 2018
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11. Assessing the risk of obstructive sleep apnoea-hypopnoea syndrome in elderly home care patients with chronic multimorbidity: a cross-sectional screening study
- Author
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Kleisiaris, C.F., Kritsotakis, E.I., Daniil, Z., Markakis, G., Papathanasiou, I.V., Androulaki, Z., and Gourgoulianis, K.I.
- Abstract
Obstructive sleep apnoea-hypopnea syndrome (OSAHS) and multimorbidity are common in elderly patients, but a potential link between the two conditions remains unclear. This study aimed to assess the prevalence of OSAHS, chronic multimorbidity and their relation in older adults in primary care settings. A screening study was performed in a cross-section of 490 elderly adults (mean age 77.5 years, 51 % male) receiving home care services in Thessaly, central Greece. The Berlin Questionnaire was employed to assess the likelihood for OSAHS and the Epworth Sleepiness Scale to assess daytime sleepiness. Multimorbidity was defined as a documented history of at least two chronic diseases. The prevalence of high risk for OSAHS, excessive daytime sleepiness and multimorbidity was 33.5, 11.6 and 63.9 %, respectively. None of the study subjects had a confirmed diagnosis for OSAHS prior to this study. A marked dose-response association between a high pre-test likelihood for OSAHS and multimorbidity was noted in patients with two [adjusted odds ratio (OR) 3.13; 95 % confidence interval (CI) 1.85-5.30) and three or more (adjusted OR 4.22; 95 % CI 2.55-6.96) chronic morbidities, independently of age, sex and smoking status. This association persisted across different levels for OSAHS risk in the Berlin questionnaire, was insensitive to varying definitions of multimorbidity and more pronounced in patients with excessive daytime sleepiness. These findings point out that primary care physicians who care for elderly patients who present with several, common and burdensome, chronic diseases should expect to find this multimorbidity often coinciding with undetected, and therefore untreated, OSAHS. Thus it is crucial to consider OSAHS as an important co-morbidity in older adults and systematically screen for OSAHS in primary care practice.
- Published
- 2016
12. Multiple rescue factors within a Wolbachia strain
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Zabalou, S., Apostolaki, A., Pattas, S., Veneti, Z., Paraskevopoulos, C., Livadaras, I., Markakis, G., Brissac, Terry, Merçot, Hervé, Bourtzis, K., Systématique, adaptation, évolution (SAE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), and Leballeur, Philippe
- Subjects
[SDV.BBM] Life Sciences [q-bio]/Biochemistry, Molecular Biology ,[SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology ,ComputingMilieux_MISCELLANEOUS - Abstract
International audience
- Published
- 2008
13. The STREAMES Project: Linking Heuristic And Empirical Knowledge Into An Expert System To Assess Stream Managers
- Author
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Comas, J., Llorens, Esther, Poch, M., Markakis, G., Batín, T., Gafny, S., Maneux, E., Martí, Eugènia, Morais, M., Puig, Mariàngels, Push, M., Riera, Joan L., Sabater, Francesc, Solimini, A. G., and Vervier, P.
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Environmental decision support system ,Rule-based system ,River water quality ,Stream management ,Expert system - Abstract
Contribution presented at iEMSs 2002 Integrated Assessment and Decision Support Conference held in Lugano, Switzerland, on 24-27 June 2002. More details at http://www.iemss.org/iemss2002/., The increase in stream nutrient loads from anthropogenic sources has become a serious problem, especially in developed regions. Humans affect streams by modifying the landscape in ways that increase the transport of nutrients to surface waters, by directly dumping urban or industrial sewage into the stream, or by modifying streams in ways that reduce their ability to respond to increased nutrient loads. In Mediterranean regions these problems are compounded by the scarcity of water. The decision-making processes involved in water quality management require extensive human expertise or extensive computation with large data sets. In this sense, the STREAMES project aims to develop a knowledge-based environmental decision support system (EDSS) to support and advice water managers in the management of human-altered streams. This EDSS will integrate an Expert System (ES), concretely a rule-based reasoning system (RBS), with a Geographical Information System to address spatial information for the appropriate stream management actions, and a numerical model to estimate point and non-point nutrient sources from middle size catchments. The RBS will be developed by integrating heuristic knowledge from experts in surface water management, as well as empirical knowledge from stream scientists, based both on previous studies and on data directly acquired from experimental sampling. This paper will present the objectives of the STREAMES project with emphasis in the knowledge acquisition and development of the RBS.
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- 2002
14. Loss of reproductive parasitism following transfer of male-killing Wolbachia to Drosophila melanogaster and Drosophila simulans
- Author
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Veneti, Z, primary, Zabalou, S, additional, Papafotiou, G, additional, Paraskevopoulos, C, additional, Pattas, S, additional, Livadaras, I, additional, Markakis, G, additional, Herren, J K, additional, Jaenike, J, additional, and Bourtzis, K, additional
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- 2012
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15. Effect of Home-Based Intervention on Hospital Readmission and Quality of Life in Middle-Aged Patients with Severe Congestive Heart Failure: A 12-Month Follow Up Study
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Vavouranakis, I., primary, Lambrogiannakis, E., additional, Markakis, G., additional, Dermitzakis, A., additional, Haroniti, Z., additional, Ninidaki, C., additional, Borbantonaki, A., additional, and Tsoutsoumanou, K., additional
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- 2003
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16. Boolean fuzzy sets
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Drossos, C.A., primary and Markakis, G., additional
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- 1992
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17. Feeding requirements of sea bream (Sparus aurata) larvae under intensive rearing conditions
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Papandroulakis, N., Markakis, G., Divanach, P., and Kentouri, M.
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- 2000
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18. Boolean fuzzy sets and possibility measures
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Markakis, G.
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- 2000
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19. Loss of reproductive parasitism following transfer of male-killing Wolbachia to Drosophila melanogaster and Drosophila simulans
- Author
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Veneti, Z., Zabalou, S., Papafotiou, G., Paraskevopoulos, C., Pattas, S., Livadaras, I., Markakis, G., Herren, J. K., Jaenike, J., and Bourtzis, K.
- Subjects
cytoplasmic incompatibility ,male-killing ,Wolbachia ,symbiosis - Abstract
Wolbachia manipulate insect host biology through a variety of means that result in increased production of infected females, enhancing its own transmission. A Wolbachia strain (wInn) naturally infecting Drosophila innubila induces male killing, while native strains of D. melanogaster and D. simulans usually induce cytoplasmic incompatibility (CI). In this study, we transferred wInn to D. melanogaster and D. simulans by embryonic microinjection, expecting conservation of the male-killing phenotype to the novel hosts, which are more suitable for genetic analysis. In contrast to our expectations, there was no effect on offspring sex ratio. Furthermore, no CI was observed in the transinfected flies. Overall, transinfected D. melanogaster lines displayed lower transmission rate and lower densities of Wolbachia than transinfected D. simulans lines, in which established infections were transmitted with near-perfect fidelity. In D. simulans, strain wInn had no effect on fecundity and egg-to-adult development. Surprisingly, one of the two transinfected lines tested showed increased longevity. We discuss our results in the context of host-symbiont co-evolution and the potential of symbionts to invade novel host species. Heredity (2012) 109, 306-312; doi:10.1038/hdy.2012.43; published online 15 August 2012
20. Morphological-dietary relationships within two assemblages of marinedemersal fishes
- Author
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Labropoulou, M. and Markakis, G.
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MARINE ecology - Abstract
In this study we have used morphological characters related to feeding and prey capture and dietary data to investigate the trophic organization within two assemblages of marine demersal fishes. Morphological and dietary disparities within fish assemblages were estimated from species similarities based on Euclidean distances plus species projections on the principal axes from multivariate analyses. The analyses of the morphological variables indicated that species in each assemblage comprised morphologically distinct groups strongly influenced by trophically linked characters. Stomach content analyses revealed that fish species in each assemblage were classified into three basic feeding groups: polychaete-shrimp feeders, crab feeders and fish feeders. These results indicated that food resource partitioning was operating within each assemblage. However, when morphological and trophic data were compared no significant correlations were found. The results did not particularly support the ecomorphological hypothesis that dietary differences are due to morphological differences, since similar diets do not correspond to similar morphologies. The patterns of trophic organization within the fish assemblages examined, possibly reflect differences among species due not only to the effect of ecological demands on morphology but also by their evolutionary history and constructional constraints imposed by phylogeny. [ABSTRACT FROM AUTHOR]
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- 1998
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21. Refining the Baveno VI elastography criteria for the definition of compensated advanced chronic liver disease
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Sebastian Mueller, Paul Calès, Omar Elshaarawy, Jérôme Boursier, Emmanuel Tsochatzis, Aleksander Krag, Umberto Arena, Victor de Ledinghen, Margarita Papatheodoridi, Maja Thiele, Massimo Pinzani, Laurent Castera, Edgar Brodkin, George V. Papatheodoridis, Fabio Marra, Georgios Markakis, Jean Baptiste Hiriart, Monica Lupsor-Platon, Audrey Payancé, Vincenza Calvaruso, Fabrizio Bronte, Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Università degli Studi di Firenze = University of Florence [Firenze] (UNIFI), Papatheodoridi M., Hiriart J.B., Lupsor-Platon M., Bronte F., Boursier J., Elshaarawy O., Marra F., Thiele M., Markakis G., Payance A., Brodkin E., Castera L., Papatheodoridis G., Krag A., Arena U., Mueller S., Cales P., Calvaruso V., de Ledinghen V., Pinzani M., and Tsochatzis E.A.
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0301 basic medicine ,Alcoholic liver disease ,medicine.medical_specialty ,Cirrhosis ,[SDV]Life Sciences [q-bio] ,Chronic liver disease ,Asymptomatic ,Gastroenterology ,03 medical and health sciences ,Liver disease ,0302 clinical medicine ,Internal medicine ,NAFLD ,medicine ,Viral hepatitis ,10. No inequality ,Portal hypertension ,ComputingMilieux_MISCELLANEOUS ,Cirrhosi ,Hepatology ,medicine.diagnostic_test ,business.industry ,Fatty liver ,medicine.disease ,3. Good health ,030104 developmental biology ,Fibroscan ,Liver biopsy ,FIB-4 ,030211 gastroenterology & hepatology ,medicine.symptom ,Transient elastography ,business - Abstract
Background: The Baveno VI consensus proposed a dual liver stiffness (LS) by transient elastography threshold of 15 kPa for excluding and diagnosing compensated advanced chronic liver disease (cACLD) in the absence of other clinical signs. Herein, we aimed to validate these criteria in a real-world multicentre study. Methods: We included 5,648 patients (mean age 51 ± 13 years, 53% males) from 10 European liver centres who had a liver biopsy and LS measurement within 6 months. We included patients with chronic hepatitis C (n = 2,913, 52%), non-alcoholic fatty liver disease (NAFLD, n = 1,073, 19%), alcohol-related liver disease (ALD, n = 946, 17%) or chronic hepatitis B (n = 716, 13%). cACLD was defined as fibrosis stage ≥F3. Results: Overall, 3,606 (66%) and 987 (18%) patients had LS 15 kPa, respectively, while cACLD was histologically confirmed in 1,772 (31%) patients. The cut-offs of 15 kPa showed 75% sensitivity and 96% specificity to exclude and diagnose cACLD, respectively. Examining the ROC curve, a more optimal dual cut-off at 12 kPa, with 91% sensitivity and 92% specificity for excluding and diagnosing cACLD (AUC 0.87; 95% CI 0.86–0.88; p 15 kPa dual cut-offs, we found that the 12 kPa dual cut-offs have better diagnostic accuracy in cACLD. Lay summary: The term compensated advanced chronic liver disease (cACLD) was introduced in 2015 to describe the spectrum of advanced fibrosis and cirrhosis in asymptomatic patients. It was also suggested that cACLD could be diagnosed or ruled out based on specific liver stiffness values, which can be non-invasively measured by transient elastography. Herein, we assessed the suggested cut-off values and identified alternative values that offered better overall accuracy for diagnosing or ruling out cACLD.
- Published
- 2021
- Full Text
- View/download PDF
22. Agile scores in MASLD and ALD: External validation and their utility in clinical algorithms.
- Author
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Papatheodoridi M, De Ledinghen V, Lupsor-Platon M, Bronte F, Boursier J, Elshaarawy O, Marra F, Thiele M, Markakis G, Payance A, Brodkin E, Castera L, Papatheodoridis G, Krag A, Arena U, Mueller S, Cales P, Calvaruso V, Delamarre A, Pinzani M, and Tsochatzis EA
- Subjects
- Humans, Female, Male, Middle Aged, Adult, Fatty Liver diagnosis, Fatty Liver pathology, Hepatitis B, Chronic complications, Hepatitis B, Chronic diagnosis, Biomarkers analysis, Elasticity Imaging Techniques methods, Liver Diseases, Alcoholic diagnosis, Liver Diseases, Alcoholic complications, Liver Diseases, Alcoholic pathology, Liver pathology, Liver diagnostic imaging, Severity of Illness Index, Hepatitis C, Chronic complications, Hepatitis C, Chronic diagnosis, Biopsy methods, Algorithms, Liver Cirrhosis diagnosis
- Abstract
Background & Aims: Agile scores, including liver stiffness measurements (LSM) and routine clinical/laboratory biomarkers, have been developed for advanced fibrosis (F≥3) and cirrhosis (F4), respectively, in patients with metabolic dysfunction-associated steatotic liver disease (MASLD). We independently validated the diagnostic accuracy of these scores in MASLD, alcohol-related liver disease (ALD) and chronic hepatitis B or C (CHB/C) and assessed them in clinical algorithms with FIB-4 and LSM., Methods: We included 4,243 patients (MASLD: 912, ALD: 386, CHB: 597, CHC: 2,348) with LSM, liver biopsy and laboratory tests within 6 months. FIB-4, Agile 3+ and Agile 4 scores were calculated., Results: For F≥3, the diagnostic accuracy of Agile 3+ and LSM were similar in MASLD (AUC: 0.86 vs. 0.86, p = 0.831) and ALD (0.92 vs. 0.94, p = 0.123). For cirrhosis, Agile 4 was similar to LSM in MASLD (0.89 vs. 0.90, p = 0.412) and ALD (0.94 vs. 0.95, p = 0.513). Agile 3+/4 performed worse than LSM in CHB/C. Using predefined dual thresholds of 90% sensitivity/specificity, correct classification rates in MASLD were 66% vs. 61% using Agile 3+ vs. LS dual cut-offs and 71% vs. 67% in ALD, respectively. When using Agile 3+ or LSM as a second step after FIB-4 >1.3, correct classification rates were higher with Agile 3+ than LSM, both for MASLD (75% vs. 71%) and ALD (76% vs. 72%), with fewer indeterminate results. Positive agreement of LSM and Agile 3+/4 significantly increased the specificity of a diagnosis of advanced fibrosis/cirrhosis., Conclusion: Agile 3+ and Agile 4 have equal diagnostic accuracy with LSM in both MASLD and ALD but result in fewer indeterminate results. Sequential use of FIB-4 and Agile 3+/4 or concurrent Agile 3+/4 and LSM can be used to further optimize F≥3 diagnosis., Impact and Implications: As of today, it is accepted that there will be no single non-invasive test or an isolated cut-off for identifying patients with advanced chronic liver disease. Here, we confirmed that Agile 3+ and Agile 4 scores are useful alternatives to simple liver stiffness measurement in diagnosing advanced fibrosis/cirrhosis in steatotic liver disease, but they do not perform as well in chronic viral hepatitis. Agile scores can help optimize the diagnosis of advanced fibrosis/cirrhosis in a dual cut-off strategy by reducing the number of indeterminate results either alone or in a sequential strategy after FIB-4. The combination of Agile scores and liver stiffness measurement can further increase our confidence in a positive diagnosis of advanced fibrosis/cirrhosis. These novel combination strategies can be useful tools to predict the likelihood of advanced stages of liver disease with the highest possible accuracy in a secondary/tertiary healthcare setting., (Copyright © 2024 European Association for the Study of the Liver. Published by Elsevier B.V. All rights reserved.)
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- 2024
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23. Exploring the Relationship between Wind Patterns and Hospital Admissions Due to Respiratory Symptoms in Children.
- Author
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Boura D, Spanakis M, Markakis G, Notas G, Lionis C, Tzanakis N, and Paraskakis E
- Abstract
Respiratory disorders significantly impact adolescents' health, often resulting in hospital admissions. Meteorological elements such as wind patterns have emerged as potential contributors to respiratory symptoms. However, it remains uncertain whether fluctuations in wind characteristics over extended periods have a tangible impact on respiratory health, particularly in regions characterized by distinct annual wind patterns. Crete is situated in the central-eastern Mediterranean Sea and frequently faces southerly winds carrying Sahara Desert sand from Africa and northerly winds from the Aegean Sea. This retrospective study analyzes long-term wind direction data and their relationship to respiratory symptoms observed in children up to 14 years old admitted at the University Hospital of Heraklion between 2002 and 2010. Symptoms such as headache, dyspnea, dry cough, dizziness, tachypnea, throat ache, and earache were predominantly reported during the presence of southern winds. Fever, productive cough, and chest pain were more frequently reported during northern winds. Cough was the most common symptom regardless of the wind pattern. Southern winds were significantly associated with higher probabilities of productive or non-productive cough, headache, dyspnea, tachypnea, dizziness, earache, and throat ache. Northern winds were related to a higher incidence of productive cough. Rhinitis, asthma, allergies, pharyngitis, and sinusitis were related to southern winds, while bronchiolitis and pneumonia were associated with northern winds. These findings underscore the critical role of local climatic factors, emphasizing their potential impact on exacerbating respiratory conditions in children. Moreover, they point out the need for further research to elucidate the underlying mechanisms and develop targeted interventions for at-risk populations.
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- 2024
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24. Evaluation of spleen stiffness by 2D shear wave elastography for ruling out high risk varices in patients with chronic advanced liver disease. A systematic review and meta-analysis.
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Karagiannakis DS, Markakis G, and Lekakis V
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- Humans, Esophageal and Gastric Varices diagnostic imaging, Esophageal and Gastric Varices etiology, Liver Cirrhosis diagnostic imaging, Liver Cirrhosis complications, Sensitivity and Specificity, Elasticity Imaging Techniques methods, Spleen diagnostic imaging
- Abstract
Objectives: To systematically review the accuracy of spleen stiffness measurement (SSM) by 2D- Shear Wave Elastography (2D-SWE) in predicting high risk for bleeding varices (HRV) in cirrhotic patients., Methods: PubMed, Embase, Web of Science, Medline, Cochrane, and Google Scholar databases were searched up to 31/05/2023 for all human studies using 2D-SWE to estimate SSM and endoscopy to detect HRV. Meta-analysis was performed using a generalized linear mixed model. Publication bias was evaluated using the funnel plot asymmetry test. The Area Under the Summarized Receiver Operating Characteristic curve (AUSROC) was estimated using the "mada" package., Results: A total of 13 studies and 1970 patients were included. Of them, 27.8 % had HRV. The pooled sensitivity and polled specificity of SSM in detecting HRV were 90 % (95 %CI:87-92 %) and 68 % (95 %CI:58-77 %), respectively, with an AUSROC at 0.86 (95 %CI:0.82-0.90). The median cutoff value of SSM in detecting HRV was 34.2 kPa. In studies including exclusively HBV cirrhotic patients, SSM's polled sensitivity and specificity in predicting HRV was 88 % (95 %CI:82-92 %) and 73 % (95 %CI:68-78 %), respectively. The AUSROC was 0.84 (95 %CI:0.81-0.87). The number of repeated measurements per patient (<5 or ≥ 5) did not affect the method's capability. Using Aixplorer to evaluate SSM had a higher sensitivity in ruling out HRV than other 2D-SWE devices., Conclusions: Our meta-analysis supports that SSM by 2D-SWE has a good diagnostic performance for ruling out HRV in cirrhosis., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)
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- 2024
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25. Is the European badger a new host for Dirofilaria immitis? The first records in Greece.
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Markakis G, Sioutas G, Bitchava D, Komnenou A, Ganoti M, and Papadopoulos E
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- Male, Animals, Humans, Dogs, Greece epidemiology, Prevalence, Animals, Wild, Dirofilaria immitis, Mustelidae, Dog Diseases diagnosis, Dog Diseases epidemiology, Dog Diseases parasitology, Dirofilariasis parasitology, Carnivora, Dirofilaria repens
- Abstract
Dirofilaria immitis is a ubiquitous nematode parasite with zoonotic potential, transmitted by mosquitoes, that causes heartworm disease in various animal species. Dogs are the parasite's typical final host, and wild carnivores represent the parasite's reservoir in nature. Studies on D. immitis infections in wild animals are essential to assess infection pressure for domestic animals, and until now, there has been only one infection case reported in a European badger (Meles meles). The current report describes the first two European badger cases with cardiovascular dirofilariosis in Greece. Two adult male badgers were rescued in Heraklion and Chania, Crete Island, and admitted to "ANIMA -Wildlife Rehabilitation Centre" in Athens. The detailed clinical examination revealed that the first badger suffered from severe broncho-pneumonitis while the second one displayed clinical signs associated with severe brain trauma. Blood samples were taken for haematology and biochemistry analyses during their short hospitalisation period. In addition, different routine diagnostic tests were carried out, including heartworm antigen testing (ELISA) and the modified Knott's test for microfilariae. Both badgers were positive in both tests. The animals died a few hours after their admission and the detailed necropsies followed, revealed the presence of three parasites in each animal's right heart, morphologically identified as adults of D. immitis. These findings add the European badger in the list of additional potential reservoir hosts for D. immitis and highlight the potential role of wildlife for companion animals and human health., (© 2024. The Author(s).)
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- 2024
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26. Circulating hormones in biopsy-proven steatotic liver disease and steatohepatitis: A Multicenter Observational Study.
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Valenzuela-Vallejo L, Chrysafi P, Kouvari M, Guatibonza-Garcia V, Mylonakis SC, Katsarou A, Verrastro O, Markakis G, Eslam M, Papatheodoridis G, Mingrone G, George J, and Mantzoros CS
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- Humans, Insulin-Like Growth Factor I analysis, Follistatin, Growth Differentiation Factor 15, Adiponectin, Insulin, Activins, Fibrosis, Biopsy, Leptin, Non-alcoholic Fatty Liver Disease complications
- Abstract
Background: The role of metabolic/inflammatory hormonal systems in metabolic dysfunction associated steatotic liver disease (MASLD) remains to be fully elucidated., Purpose: To report the levels of the novel total and H-specific growth differentiation factor-15 (GDF-15) and other established hormonal systems and to describe hormonal patterns in controls and patients with MASLD and its stages., Methods: This is a multicenter study from two Gastroenterology-Hepatology Departments (Greece and Australia) and one Bariatric-Metabolic Surgery Department (Italy). Overall, n = 455 serum samples of patients with biopsy-proven MASLD (n = 374) and Controls (n = 81) were recruited., Results: We report for the first time that total and H-specific GDF-15 levels are higher in MASLD, at-risk metabolic dysfunction associated steatohepatitis (MASH), and severe fibrosis than in Controls. In addition, follistatin-like-3 (FSTL-3), free insulin-like growth factor-1 (IGF-1), leptin, and insulin levels were higher in MASLD patients than in Controls, while adiponectin levels were lower in MASLD subjects than in Controls. Activin-A, follistatin (FST), FSTL-3, and insulin levels significantly increased in severe fibrosis compared to no/mild fibrosis, while free IGF-1 decreased. In addition, adiponectin levels were lower in subjects without fibrosis vs. any fibrosis. Moreover, GDF-15 presented a strong positive association for the likelihood of having MASLD and at-risk MASH, while in adjusted analyses, FST and adiponectin showed inverse associations. Two different patterns of at-risk MASH were revealed through unsupervised analysis (total variation explained=54%). The most frequent pattern met in our sample (34.3%) was characterized by higher levels of total and H-specific GDF-15, follistatins, and activins, as well as low adiponectin levels. The second pattern revealed was characterized by high levels of free IGF-1, insulin, and leptin, with low levels of activin-A and adiponectin. Similar patterns were also generated in the case of overall MASLD., Conclusions: Total and H-specific GDF-15 levels increase as MASLD severity progresses. FSTL-3, free IGF-1, leptin, and insulin are also higher, whereas adiponectin and activin-A levels are lower in the MASLD group than in Controls. Hormonal systems, including GDF-15, may not only be involved in the pathophysiology but could also prove useful for the diagnostic workup of MASLD and its stages and may potentially be of therapeutic value., Competing Interests: Declaration of competing interest CSM reports grants through his institution from Merck, Massachusetts Life Sciences Center, and Boehringer Ingelheim, has been a shareholder of and has received grants through his institution and personal consulting fees from Coherus Inc., and AltrixBio; he reports personal consulting fees from Novo Nordisk, reports personal consulting fees and collaborative research from Ansh Inc., collaborative research support from LabCorp Inc., reports personal consulting fees from Genfit, Lumos, Amgen, Corcept, Intercept, 89 Bio, Madrigal, and Regeneron, reports educational activity meals through his institution or national conferences from Esperion, Merck, Boehringer Ingelheim and travel support and fees from TMIOA, Elsevier, and the Cardio Metabolic Health Conference. None is related to the work presented herein. GP has received fees for advisory board meetings and lectures from Abbvie, Albireo, Amgen, Dicerna, Gilead, GlaxoSmithKline, Ipsen, Janssen, Merck Sharp & Dohme, Novo Nordisk, Roche, Takeda and has received research grants from Abbvie and Gilead. JG is supported by the Robert W. Storr Bequest to the Sydney Medical Foundation, University of Sydney; a National Health and Medical Research Council of Australia (NHMRC) Program Grant (APP1053206), Project, Ideas, and Investigator grants (APP2001692, APP1107178, APP1108422, APP1196492) and a Cancer Institute, NSW grant (2021/ATRG2028). All other authors have no competing interest to declare., (Copyright © 2023 Elsevier Inc. All rights reserved.)
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- 2023
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27. Liver biopsy-based validation, confirmation and comparison of the diagnostic performance of established and novel non-invasive steatotic liver disease indexes: Results from a large multi-center study.
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Kouvari M, Valenzuela-Vallejo L, Guatibonza-Garcia V, Polyzos SA, Deng Y, Kokkorakis M, Agraz M, Mylonakis SC, Katsarou A, Verrastro O, Markakis G, Eslam M, Papatheodoridis G, George J, Mingrone G, and Mantzoros CS
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- Humans, Liver Function Tests, Biopsy, Liver pathology, Aspartate Aminotransferases, Liver Cirrhosis diagnosis, Liver Cirrhosis pathology, Non-alcoholic Fatty Liver Disease pathology
- Abstract
Background: Non-invasive tools (NIT) for metabolic-dysfunction associated liver disease (MASLD) screening or diagnosis need to be thoroughly validated using liver biopsies., Purpose: To externally validate NITs designed to differentiate the presence or absence of liver steatosis as well as more advanced disease stages, to confirm fully validated indexes (n = 7 NITs), to fully validate partially validated indexes (n = 5 NITs), and to validate for the first time one new index (n = 1 NIT)., Methods: This is a multi-center study from two Gastroenterology-Hepatology Departments (Greece and Australia) and one Bariatric-Metabolic Surgery Department (Italy). Overall, n = 455 serum samples of patients with biopsy-proven MASLD (n = 374, including 237 patients with metabolic-dysfunction associated steatohepatitis (MASH)) and Controls (n = 81) were recruited. A complete validation analysis was performed to differentiate the presence of MASLD vs. Controls, MASH vs. metabolic-dysfunction associated steatotic liver (MASL), histological features of MASH, and fibrosis stages., Results: The index of NASH (ION) demonstrated the highest differentiation ability for the presence of MASLD vs. Controls, with the area under the curve (AUC) being 0.894. For specific histological characterization of MASH, no NIT demonstrated adequate performance, while in the case of specific features of MASH, such as hepatocellular ballooning and lobular inflammation, ION demonstrated the best performance with AUC being close to or above 0.850. For fibrosis (F) classification, the highest AUC was reached by the aspartate aminotransferase to platelet ratio index (APRI) being ~0.850 yet only with the potential to differentiate the severe fibrosis stages (F3, F4) vs. mild or moderate fibrosis (F0-2) with an AUC > 0.900 in patients without T2DM. When we excluded patients with morbid obesity, the differentiation ability of APRI was improved, reaching AUC = 0.802 for differentiating the presence of fibrosis F2-4 vs. F0-1. The recommended by current guidelines index FIB-4 seemed to differentiate adequately between severe (i.e., F3-4) and mild or moderate fibrosis (F0-2) with an AUC = 0.820, yet this was not the case when FIB-4 was used to classify patients with fibrosis F2-4 vs. F0-1. Trying to improve the predictive value of all NITs, using Youden's methodology, to optimize the suggested cut-off points did not materially improve the results., Conclusions: The validation of currently available NITs using biopsy-proven samples provides new evidence for their ability to differentiate between specific disease stages, histological features, and, most importantly, fibrosis grading. The overall performance of the examined NITs needs to be further improved for applications in the clinic., Competing Interests: Declaration of competing interest CSM reports grants through his institution from Merck, Massachusetts Life Sciences Center, and Boehringer Ingelheim, has been a shareholder of and has received grants through his institution and personal consulting fees from Coherus Inc., and AltrixBio; he reports personal consulting fees from Novo Nordisk, reports personal consulting fees and collaborative research from Ansh Inc., collaborative research support from LabCorp Inc., reports personal consulting fees from Genfit, Lumos, Amgen, Corcept, Intercept, 89 Bio, Madrigal, and Regeneron, reports educational activity meals through his institution or national conferences from Esperion, Merck, Boehringer Ingelheim and travel support and fees from TMIOA, Elsevier, and the Cardio Metabolic Health Conference. None is related to the work presented herein. GP has received fees for advisory board meetings and lectures from Abbvie, Albireo, Amgen, Dicerna, Gilead, GlaxoSmithKline, Ipsen, Janssen, Merck Sharp & Dohme, Novo Nordisk, Roche, Takeda and has received research grants from Abbvie and Gilead. All other authors have no competing interest to declare., (Copyright © 2023 Elsevier Inc. All rights reserved.)
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- 2023
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28. The first external validation of the Dallas steatosis index in biopsy-proven Non-alcoholic fatty liver Disease: A multicenter study.
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Kouvari M, Mylonakis SC, Katsarou A, Valenzuela-Vallejo L, Guatibonza-Garcia V, Kokkorakis M, Verrastro O, Angelini G, Markakis G, Eslam M, George J, Papatheodoridis G, Mingrone G, and Mantzoros CS
- Abstract
Aims: A new non-invasive tool (NIT) for non-alcoholic fatty liver disease (NAFLD) proposed in 2022 by the multi-ethnic Dallas Heart Study, i.e. the Dallas Steatosis Index (DSI), was validated herein using for the first time the gold standard i.e. liver biopsy-proven NAFLD., Methods: This is a multicenter study based on samples and data from two Gastroenterology-Hepatology Clinics (Greece and Australia) and one Bariatric-Metabolic Surgery Clinic (Italy). Overall, n = 455 patients with biopsy-proven NAFLD (n = 374) and biopsy-proven controls (n = 81) were recruited., Results: The ability of DSI to correctly classify participants as NAFLD or controls was very good, reaching an Area Under the Curve (AUC) = 0.887. The cut-off point that could best differentiate the presence vs. absence of NAFLD corresponded to DSI = 0.0 (risk threshold: 50% | Sensitivity: 0.88; Positive Predictive Value (PPV): 93.0%; F1-score = 0.91). DSI demonstrated significantly better performance characteristics than other liver steatosis indexes. Decision curve analysis revealed that the benefit of DSI as a marker to indicate the need for invasive liver assessment was confirmed only when higher DSI values, i.e. ≥ 1.4, were used as risk thresholds. DSI performance to differentiate disease progression was inadequate (all AUCs < 0.700)., Conclusions: DSI is more useful for disease screening (NAFLD vs. controls) than to differentiate diseases stages or progression. The value of any inclusion of DSI to guidelines needs to be further studied., Competing Interests: Declaration of Competing Interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: [CSM reports grants through his institution from Merck, Massachusetts Life Sciences Center and Boehringer Ingellheim, has been a shareholder of and has received grants through his Institution and personal consulting fees from Coherus Inc. and AltrixBio, he reports personal consulting fees from Novo Nordisk, reports personal consulting fees and support with research reagents from Ansh Inc., collaborative research support from LabCorp Inc., reports personal consulting fees from Genfit, Lumos, Amgen, Corcept, Intercept, 89 Bio, Madrigal and Regeneron, reports educational activity meals through his institution or national conferences from Esperion, Merck, Boehringer Ingelheim and travel support and fees from TMIOA, Elsevier, and the Cardio Metabolic Health Conference. None is related to the work presented herein.]., (Copyright © 2023 Elsevier B.V. All rights reserved.)
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- 2023
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29. Distance Learning in Nursing Education during the COVID-19 Pandemic: Psychosocial Impact for the Greek Nursing Students-A Qualitative Approach.
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Kartsoni E, Bakalis N, Markakis G, Zografakis-Sfakianakis M, Patelarou E, and Patelarou A
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(1) Background: The COVID-19 pandemic posed a major threat to global health and on the educational field. The purpose of this study is to identify and illustrate the psychosocial adaptation of nursing students to the sudden and exclusive application of distance learning during the COVID-19 pandemic; (2) Methods: A qualitative interview research has been designed. Two focus groups of seven members each and six individual interviews were conducted in a sample of undergraduate nursing students in Greece from 3 March 2021, to 9 April 2021.; (3) Results: A qualitative thematic analysis of the data identified six themes: 1. Challenges; 2. Concerns; 3. Social changes; 4. Negative Emotions; 5. Evaluation; and 6. Teaching strategies.; (4) Conclusions: During its implementation, it identified gaps and weaknesses in the entire academic community. The study of the psychosocial adaptation of the academic community is considered crucial, as it can highlight the individual difficulties in distance learning and contribute to the improvement of the methods of its the improvement of its methods.
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- 2023
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30. Ocular trauma, visual acuity related to time of referral and psychosocial determinants, during COVID‑19 pandemic: A prospective study.
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Kyriakaki EDO, Detorakis ET, Bertsias AK, Markakis G, Tsakalis NG, Volkos P, Spandidos DA, and Symvoulakis EK
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The aim of the present study was to explore the associations between visual outcomes of ocular injury patients in a tertiary hospital unit with clinical and demographic variables and to evaluate the psychosocial impact of the injury on the patients. An 18-month prospective study of 30 eye-injured adult patients was conducted in the General University Hospital of Heraklion, Crete, a tertiary referral hospital. All severe eye injury case information was prospectively collected between February 1, 2020 and August 31, 2021. Best corrected visual acuity (BCVA) was labelled not poor (>0.5/10 or >20/400 on the Snellen scale, <1.3 in LogMAR scale) and poor (≤0.5/10 or ≤20/400 on the Snellen scale, ≥1.3 on the LogMAR equivalent). Data regarding participants' perceived stress levels, by using Perceived Stress Scale 14 (PSS-14), were collected prospectively, one year after study end. Out of 30 ocular injury patients selected, 76.7% were men and most of them were self-employed and private or public sector workers (36.7%). Not poor final BCVA was related to not poor initial BCVA [odds ratio (OR) 1.714; P=0.006]. No statistical associations were found between visual outcome and demographic or clinical factors, but not poor final BCVA was associated with improved self-reported psychological condition of the sufferers, as examined by a questionnaire sheet developed to collect information for study purpose (8.36/10 vs. 6.40/10; P=0.011). No patient reported job loss or changed work status following the injury. Not poor initial BCVA was a significant predictor for not poor final visual outcomes (OR 1.714; P=0.006). Patients with not poor final BCVA expressed higher levels of positive psychology (8.36/10 vs. 6.40/10; P=0.011) and less fear of eye injury repetition (64.0 vs. 100.0%; P=0.286). Not poor final BCVA was associated with low PSS-14 scores one year after study end (77.3 vs. 0.0%, P=0.003). Collaboration between ophthalmologists, mental health professionals and primary care team may be important in order to help patients to cope with the psychosocial burden sequel to eye trauma., Competing Interests: DS is the Editor-in-Chief for the journal, but had no personal involvement in the reviewing process, or any influence in terms of adjudicating on the final decision, for this article. Another member of the editorial board handled the manuscript as editor. The other authors declare that they have no competing interests., (Copyright: © Kyriakaki et al.)
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- 2023
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31. Spleen stiffness can predict liver decompensation and survival in patients with cirrhosis.
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Karagiannakis DS, Voulgaris T, Markakis G, Lakiotaki D, Michailidou E, Cholongitas E, and Papatheodoridis G
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- Humans, Spleen pathology, Liver Cirrhosis complications, Liver pathology, Liver Failure, Elasticity Imaging Techniques
- Abstract
Background and Aim: Liver stiffness measurement (LSM) has been predicting liver decompensation and survival in cirrhotics. The aim of our study was to investigate if spleen stiffness measurement (SSM) by 2D shear-wave elastography could predict better the probability of decompensation and mortality, compared with LSM and other parameters., Methods: Consecutive cirrhotic patients were recruited between 1/2017 and 12/2021. LSM and SSM were performed at baseline and epidemiological, clinical, and laboratory data were collected. Clinical events were recorded every 3 months., Results: Totally, 177 patients were followed for a mean period of 31 ± 18 months. In Cox regression analysis, only SSM was independently associated with the probability of decompensation (HR: 1.063, 95% CI: 1.009-1.120; P = 0.021), offering an AUROC of 0.710 (P = 0.003) for predicting 1-year liver decompensation (NPV: 81.1% for the cut-off point of 37 kPa). The occurrence of death/liver transplantation was independently associated only with higher SSM (HR: 1.043; 95% CI:1.003-1.084; P = 0.034). The AUROC of SSM for predicting 1-year death/liver transplantation was 0.72 (P = 0.006) (NPV: 95% for the cut-off of 38.8 kPa). The performance of SSM to predict the 1-year death/liver transplantation increased in high-risk patients (CTP: B/C plus MELD >10 plus LSM > 20 kPa), giving an AUROC of 0.80 (P < 0.001). Only 1/26 high-risk patients with SSM < 38.8 kPa died during the first year of follow-up (NPV: 96.4%)., Conclusions: SSM was the only factor independently associated with the probability of decompensation and occurrence of death, showing better diagnostic accuracy for the prediction of 1-year decompensation or death compared with LSM and MELD score., (© 2022 Journal of Gastroenterology and Hepatology Foundation and John Wiley & Sons Australia, Ltd.)
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- 2023
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32. Comparing 2D-shear wave to transient elastography for the evaluation of liver fibrosis in nonalcoholic fatty liver disease.
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Karagiannakis DS, Markakis G, Lakiotaki D, Cholongitas E, Vlachogiannakos J, and Papatheodoridis G
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- Humans, Hyperplasia pathology, Liver diagnostic imaging, Liver pathology, Liver Cirrhosis diagnostic imaging, Liver Cirrhosis etiology, Obesity complications, Elasticity Imaging Techniques methods, Non-alcoholic Fatty Liver Disease complications, Non-alcoholic Fatty Liver Disease diagnostic imaging, Non-alcoholic Fatty Liver Disease pathology
- Abstract
Background and Aim: The aim of this study is to evaluate the performance of 2D-shear wave elastography (2D-SWE) in patients with nonalcoholic fatty liver disease (NAFLD) and compare it to transient elastography., Methods: Over 6 months, 552 patients with NAFLD underwent liver stiffness measurement (LSM) by both 2D-SWE and transient elastography with controlled attenuation parameter (CAP) at the same visit., Results: LSM was not feasible by transient elastography (M/XL probe) in 18 (3.3%) and by 2D-SWE in 26 (4.7%) patients. The median LSM of transient elastography was 5.5 (2.8-75) kPa and of 2D-SWE 6.2 (3.7-46.2) kPa. LSMs by transient elastography and 2D-SWE were correlated regardless of the obesity status (r, 0.774; P < 0.001; r, 0.774; P < 0.001; r, 0.75; P < 0.001 in BMI <25, 25-30 and ≥30 kg/m2 respectively), or the degree of liver steatosis (r = 0.63; P < 0.001 and r = 0.743; P < 0.001 in mild and moderate/severe steatosis, respectively). According to transient elastography, 88 (15.9%) patients were classified with at least severe fibrosis (≥F3) and 55 (10%) with cirrhosis. By using the 2D-SWE, 85 (15.4%) patients had at least severe fibrosis and 52 (9.4%) cirrhosis. The correlation between the two methods was strong in patients with at least severe fibrosis (r, 0.84; P < 0.001) or cirrhosis (r, 0.658; P < 0.001). When transient elastography was used as reference, 2D-SWE showed an excellent accuracy of 98.8 and 99.8% in diagnosing severe fibrosis and cirrhosis, respectively., Conclusions: In NAFLD, 2D-SWE and transient elastography have comparable feasibility and clinical applicability providing LSMs with strong correlation, even in overweight/obese patients, independently of the severity of liver steatosis and fibrosis. Thus, either of the two methods can be effectively used for the assessment of fibrosis in this setting., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2022
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33. Dementia Family Carers' Quality of Life and Their Perceptions About Care-receivers' Dementia Symptoms: The Role of Resilience.
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Kalaitzaki A, Koukouli S, Foukaki ME, Markakis G, and Tziraki C
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- Cognition, Cross-Sectional Studies, Female, Humans, Male, Quality of Life psychology, Caregivers psychology, Dementia psychology
- Abstract
Aim: The study examined (a) the relationship between caregivers' (CG) quality of life (QoL) and their reports about care receivers' dementia symptoms and (b) whether CG's resilience would be a mediator in this relationship. Method: This was a cross-sectional study based on a purposeful sampling. Face-to-face structured interviews were conducted with 118 CGs (79% females, mean age = 59, SD = 12). CGs provided assessment of their QoL and resilience, and proxy assessments of people with dementia (PwD) symptoms (cognitive functioning, functional activity and behavioural problems (BP)). Results: The BP were the only perceived dementia symptoms associated with the CGs' QoL. CGs' resilience fully mediated the relationship between perceived BP and CGs' QoL. Implications: Tailored training programs designed to improve CGs' QoL should focus on strengthening their personal resources, such as skills to manage the behaviour problems exhibited by PwD and their resilience to adapt to self-perceived behaviour problems common to dementia.
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- 2022
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34. Correction to: Circulating microRNAs in the early prediction of disease recurrence in primary breast cancer.
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Papadaki C, Stratigos M, Markakis G, Spiliotaki M, Mastrostamatis G, Nikolaou C, Mavroudis D, and Agelaki S
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- 2022
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35. Factors associated with the perception of services by dementia informal caregivers in Greece: the role of familism.
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Koukouli S, Kalaitzaki AE, Panagiotakis S, Markakis G, Werner P, and Tziraki C
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- Cross-Sectional Studies, Female, Greece, Humans, Male, Perception, Quality of Life, Caregivers, Dementia
- Abstract
Aim: To investigate perceptions of informal caregivers of community-dwelling persons with dementia (PwD) regarding health and social care services and their correlates using the Behavioral Model of Healthcare Utilization as the theoretical framework., Methods: This was a cross-sectional study using a purposive sampling technique to identify, through community-based health and social care services, caregivers of PwD. Face-to-face interviews were conducted with 118 informal caregivers (78.8% female, mean age = 58.9 years) via a structured questionnaire., Results: Three 'Perceptions of Services' subscales were identified: 'Availability and Adequacy of Services' (AAS), 'Physicians' Competence' (COMP), and 'Professionals' Behavior' (PB). Predisposing factors (gender, employment, familism) and enabling/impeding factors (caregiving impedes work, quality of life aspects - environment and social relationships, information about dementia) were significant correlates of the AAS and COMP subscales. Familism was negatively associated with the AAS subscale. PwD's perceived declined physical and behavioral functioning was related to worse perceptions regarding professionals' behavior (PB) toward the PwD., Conclusion: Understanding the factors associated with caregivers' perceptions of health and social care community services may guide the development of interventions that facilitate the appropriate use of those services, provide increased support to PwD and their caregivers, and delay potential institutionalization.
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- 2022
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36. Refining the Baveno VI elastography criteria for the definition of compensated advanced chronic liver disease.
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Papatheodoridi M, Hiriart JB, Lupsor-Platon M, Bronte F, Boursier J, Elshaarawy O, Marra F, Thiele M, Markakis G, Payance A, Brodkin E, Castera L, Papatheodoridis G, Krag A, Arena U, Mueller S, Cales P, Calvaruso V, de Ledinghen V, Pinzani M, and Tsochatzis EA
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- Biopsy, Dimensional Measurement Accuracy, Elasticity, Europe epidemiology, Female, Humans, Male, Middle Aged, Patient Acuity, Sensitivity and Specificity, Elasticity Imaging Techniques methods, Elasticity Imaging Techniques standards, Elasticity Imaging Techniques statistics & numerical data, Hepatitis B, Chronic complications, Hepatitis B, Chronic epidemiology, Hepatitis B, Chronic pathology, Hepatitis, Alcoholic complications, Hepatitis, Alcoholic epidemiology, Hepatitis, Alcoholic pathology, Liver diagnostic imaging, Liver pathology, Liver Cirrhosis diagnosis, Liver Cirrhosis epidemiology, Liver Cirrhosis etiology, Non-alcoholic Fatty Liver Disease complications, Non-alcoholic Fatty Liver Disease epidemiology, Non-alcoholic Fatty Liver Disease pathology
- Abstract
Background: The Baveno VI consensus proposed a dual liver stiffness (LS) by transient elastography threshold of <10 and >15 kPa for excluding and diagnosing compensated advanced chronic liver disease (cACLD) in the absence of other clinical signs. Herein, we aimed to validate these criteria in a real-world multicentre study., Methods: We included 5,648 patients (mean age 51 ± 13 years, 53% males) from 10 European liver centres who had a liver biopsy and LS measurement within 6 months. We included patients with chronic hepatitis C (n = 2,913, 52%), non-alcoholic fatty liver disease (NAFLD, n = 1,073, 19%), alcohol-related liver disease (ALD, n = 946, 17%) or chronic hepatitis B (n = 716, 13%). cACLD was defined as fibrosis stage ≥F3., Results: Overall, 3,606 (66%) and 987 (18%) patients had LS <10 and >15 kPa, respectively, while cACLD was histologically confirmed in 1,772 (31%) patients. The cut-offs of <10 and >15 kPa showed 75% sensitivity and 96% specificity to exclude and diagnose cACLD, respectively. Examining the ROC curve, a more optimal dual cut-off at <7 and >12 kPa, with 91% sensitivity and 92% specificity for excluding and diagnosing cACLD (AUC 0.87; 95% CI 0.86-0.88; p <0.001) was derived. Specifically, for ALD and NAFLD, a low cut-off of 8 kPa can be used (sensitivity=93%). For the unclassified patients, we derived a risk model based on common patient characteristics with better discrimination than LS alone (AUC 0.74 vs. 0.69; p <0.001)., Conclusions: Instead of the Baveno VI proposed <10 and >15 kPa dual cut-offs, we found that the <8 kPa (or <7 kPa for viral hepatitis) and >12 kPa dual cut-offs have better diagnostic accuracy in cACLD., Lay Summary: The term compensated advanced chronic liver disease (cACLD) was introduced in 2015 to describe the spectrum of advanced fibrosis and cirrhosis in asymptomatic patients. It was also suggested that cACLD could be diagnosed or ruled out based on specific liver stiffness values, which can be non-invasively measured by transient elastography. Herein, we assessed the suggested cut-off values and identified alternative values that offered better overall accuracy for diagnosing or ruling out cACLD., Competing Interests: Conflicts of interest Victor de Ledinghen reports consultancy for Echosens and SuperSonic Imagine. All other authors have nothing to disclose. Please refer to the accompanying ICMJE disclosure forms for further details., (Copyright © 2020 European Association for the Study of the Liver. Published by Elsevier B.V. All rights reserved.)
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- 2021
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37. Particularities of having plants at home during the confinement due to the COVID-19 pandemic.
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Pérez-Urrestarazu L, Kaltsidi MP, Nektarios PA, Markakis G, Loges V, Perini K, and Fernández-Cañero R
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The present study evaluated the role of having plants at home during the confinement period as a result of the COVID-19 pandemic that deprived people of freely visiting open green spaces. Preferences concerning the quantity of the desired vegetation as well as the ways in which the COVID-19 crisis affected the change of perceptions with regard to having plants at home were also evaluated. A questionnaire, which was filled by 4205 participants, provided an undistracted evaluation of the impact of indoor and outdoor plants on their emotional welfare considering behavioural, social, and demographic variables. The emotional state of the respondents was neutral and a significant proportion expressed positive emotions. Having indoor plants was correlated with more positive emotions, and confined inhabitants allocated more time for plant maintenance. By contrast, negative emotions prevailed in respondents who related to a positive COVID-19 case, which was more frequent in females and young participants living in small houses that received low levels of natural light and had few or no plants. A few indoor plants placed in strategic positions were also preferred compared with a high number of plants. By contrast, an increased amount of vegetation accompanied by living walls was preferred for outdoor settings. Living walls were considered as advantageous for increasing indoor vegetation, but they were also associated with technical and economical hurdles., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2020 Elsevier GmbH. All rights reserved.)
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- 2021
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38. Paraoxonase-1 and Symptomatic Status in Carotid Artery Disease.
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Lioudaki S, Verikokos C, Kouraklis G, Kontopodis N, Markakis G, Ioannou C, Daskalopoulou A, Perrea D, and Klonaris C
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- Aged, Asymptomatic Diseases, Biomarkers blood, Blood Glucose analysis, Carotid Stenosis complications, Carotid Stenosis diagnosis, Carotid Stenosis surgery, Cross-Sectional Studies, Down-Regulation, Endarterectomy, Carotid, Female, Humans, Lipids blood, Male, Middle Aged, Aryldialkylphosphatase blood, Carotid Stenosis blood
- Abstract
Background: Paraoxonase-1 (PON-1) is a high-density lipoprotein (HDL)-associated hydrolase that appears to have a protective action against atherosclerosis. The aim of our study is to identify whether PON-1 levels may be associated with the manifestation of symptoms in patients with carotid artery stenosis., Methods: We studied all patients who underwent carotid endarterectomy in the Vascular Surgery Department of Laikon Hospital, Athens, Greece, from July 2012 to July 2014. Medical history was recorded and PON-1 glucose, total cholesterol, HDL cholesterol, low-density lipoprotein cholesterol, and triglycerides levels were measured. Variables were compared between symptomatic and asymptomatic patients. A receiver operating characteristic (ROC) curve was constructed to evaluate the accuracy of PON-1 to predict symptoms., Results: A total of 74 patients were included, 41 were asymptomatic and the mean age was 68.5 years. The 2 groups appear to differ significantly with regards to the PON-1 levels, with the symptomatic group showing lower levels (5.3 ± 1.19 vs. 4.6 ± 1.36 ng/mL; P = 0.025). ROC analysis demonstrated an area under the curve of 0.654 (P = 0.023)., Conclusions: Reduced PON-1 levels showed a significant association with symptomatic status, which was independent of other traditional cardiovascular factors. Further studies are required to prospectively assess the role of PON-1 in predicting cerebrovascular events in patients with carotid artery disease., (Copyright © 2019 Elsevier Inc. All rights reserved.)
- Published
- 2020
- Full Text
- View/download PDF
39. Circulating microRNAs in the early prediction of disease recurrence in primary breast cancer.
- Author
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Papadaki C, Stratigos M, Markakis G, Spiliotaki M, Mastrostamatis G, Nikolaou C, Mavroudis D, and Agelaki S
- Subjects
- Adult, Aged, Breast Neoplasms genetics, Breast Neoplasms pathology, Circulating MicroRNA genetics, Disease-Free Survival, Early Detection of Cancer, Female, Gene Expression Regulation, Neoplastic, Humans, Lymph Nodes pathology, MicroRNAs genetics, Middle Aged, Neoplasm Grading, Neoplasm Recurrence, Local genetics, Neoplasm Recurrence, Local pathology, Biomarkers, Tumor blood, Breast Neoplasms blood, Circulating MicroRNA blood, Neoplasm Recurrence, Local blood
- Abstract
Background: In primary breast cancer metastases frequently arise from a state of dormancy that may persist for extended periods of time. We investigated the efficacy of plasma micro-RNA (miR)-21, miR-23b, miR-190, miR-200b and miR-200c, related to dormancy and metastasis, to predict the outcome of patients with early breast cancer., Methods: miRNAs were evaluated by RT-qPCR in plasma obtained before adjuvant chemotherapy. miRNA expression, classified as high or low according to median values, correlated with relapse and survival. Receiver operating characteristic (ROC) curves were constructed to determine miRNA sensitivity and specificity., Results: miR-21 (p < 0.001), miR-23b (p = 0.028) and miR-200c (p < 0.001) expression were higher and miR-190 was lower (p = 0.013) in relapsed (n = 49), compared to non-relapsed patients (n = 84). Interestingly, miR-190 was lower (p = 0.0032) in patients with early relapse (at < 3 years; n = 23) compared to those without early relapse (n = 110). On the other hand, miR-21 and miR-200c were higher (p = 0.015 and p < 0.001, respectively) in patients with late relapse (relapse at ≥ 5 years; n = 20) as compared to non-relapsed patients. High miR-200c was associated with shorter disease-free survival (DFS) (p = 0.005) and high miR-21 with both shorter DFS and overall survival (OS) (p < 0.001 and p = 0.033, respectively) compared to low expression. ROC curve analysis revealed that miR-21, miR-23b, miR-190 and miR-200c discriminated relapsed from non-relapsed patients. A combination of of miR-21, miR-23b and miR-190 showed higher sensitivity and specificity in ROC analyses compared to each miRNA alone; accuracy was further improved by adding lymph node infiltration and tumor grade to the panel of three miRs (AUC 0.873). Furthermore, the combination of miR-200c, lymph node infiltration, tumor grade and estrogen receptor predicted late relapse (AUC 0.890)., Conclusions: Circulating miRNAs are differentially expressed among relapsed and non-relapsed patients with early breast cancer and predict recurrence many years before its clinical detection. Our results suggest that miRNAs represent potential circulating biomarkers in early breast cancer.
- Published
- 2018
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40. NMR Spectroscopy Protocols for Food Metabolomics Applications.
- Author
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Ralli E, Amargianitaki M, Manolopoulou E, Misiak M, Markakis G, Tachtalidou S, Kolesnikova A, Dais P, and Spyros A
- Subjects
- Food Analysis methods, Magnetic Resonance Spectroscopy methods, Metabolomics methods
- Abstract
NMR spectroscopy has become an indispensable tool for the metabolic profiling of foods and food products. In the present protocol, we report an analytical approach based on liquid-state NMR for the determination of polar and nonpolar metabolites in some common liquid (wine, spirits, juice) and solid (cheese, coffee, honey) foods. Although the diversity of foods precludes the use of a single protocol, with small modifications, the proposed methodologies can be adapted to a broader range of foodstuffs.
- Published
- 2018
- Full Text
- View/download PDF
41. Assessing the risk of obstructive sleep apnoea-hypopnoea syndrome in elderly home care patients with chronic multimorbidity: a cross-sectional screening study.
- Author
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Kleisiaris CF, Kritsotakis EI, Daniil Z, Markakis G, Papathanasiou IV, Androulaki Z, and Gourgoulianis KI
- Abstract
Obstructive sleep apnoea-hypopnea syndrome (OSAHS) and multimorbidity are common in elderly patients, but a potential link between the two conditions remains unclear. This study aimed to assess the prevalence of OSAHS, chronic multimorbidity and their relation in older adults in primary care settings. A screening study was performed in a cross-section of 490 elderly adults (mean age 77.5 years, 51 % male) receiving home care services in Thessaly, central Greece. The Berlin Questionnaire was employed to assess the likelihood for OSAHS and the Epworth Sleepiness Scale to assess daytime sleepiness. Multimorbidity was defined as a documented history of at least two chronic diseases. The prevalence of high risk for OSAHS, excessive daytime sleepiness and multimorbidity was 33.5, 11.6 and 63.9 %, respectively. None of the study subjects had a confirmed diagnosis for OSAHS prior to this study. A marked dose-response association between a high pre-test likelihood for OSAHS and multimorbidity was noted in patients with two [adjusted odds ratio (OR) 3.13; 95 % confidence interval (CI) 1.85-5.30) and three or more (adjusted OR 4.22; 95 % CI 2.55-6.96) chronic morbidities, independently of age, sex and smoking status. This association persisted across different levels for OSAHS risk in the Berlin questionnaire, was insensitive to varying definitions of multimorbidity and more pronounced in patients with excessive daytime sleepiness. These findings point out that primary care physicians who care for elderly patients who present with several, common and burdensome, chronic diseases should expect to find this multimorbidity often coinciding with undetected, and therefore untreated, OSAHS. Thus it is crucial to consider OSAHS as an important co-morbidity in older adults and systematically screen for OSAHS in primary care practice.
- Published
- 2016
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42. Multiple rescue factors within a Wolbachia strain.
- Author
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Zabalou S, Apostolaki A, Pattas S, Veneti Z, Paraskevopoulos C, Livadaras I, Markakis G, Brissac T, Merçot H, and Bourtzis K
- Subjects
- Animals, Bacterial Typing Techniques, Cytoplasm microbiology, Drosophila classification, Drosophila microbiology, Embryo, Nonmammalian cytology, Embryo, Nonmammalian microbiology, Female, Fluorescent Antibody Technique, Linear Models, Male, Phylogeny, Rickettsiaceae Infections microbiology, Wolbachia classification, Wolbachia cytology, Genes, Bacterial, Wolbachia genetics
- Abstract
Wolbachia-induced cytoplasmic incompatibility (CI) is expressed when infected males are crossed with either uninfected females or females infected with Wolbachia of different CI specificity. In diploid insects, CI results in embryonic mortality, apparently due to the the loss of the paternal set of chromosomes, usually during the first mitotic division. The molecular basis of CI has not been determined yet; however, several lines of evidence suggest that Wolbachia exhibits two distinct sex-dependent functions: in males, Wolbachia somehow "imprints" the paternal chromosomes during spermatogenesis (mod function), whereas in females, the presence of the same Wolbachia strain(s) is able to restore embryonic viability (resc function). On the basis of the ability of Wolbachia to induce the modification and/or rescue functions in a given host, each bacterial strain can be classified as belonging in one of the four following categories: mod(+) resc(+), mod(-) resc(+), mod(-) resc(-), and mod(+) resc(-). A so-called "suicide" mod(+) resc(-) strain has not been found in nature yet. Here, a combination of embryonic cytoplasmic injections and introgression experiments was used to transfer nine evolutionary, distantly related Wolbachia strains (wYak, wTei, wSan, wRi, wMel, wHa, wAu, wNo, and wMa) into the same host background, that of Drosophila simulans (STCP strain), a highly permissive host for CI expression. We initially characterized the modification and rescue properties of the Wolbachia strains wYak, wTei, and wSan, naturally present in the yakuba complex, upon their transfer into D. simulans. Confocal microscopy and multilocus sequencing typing (MLST) analysis were also employed for the evaluation of the CI properties. We also tested the compatibility relationships of wYak, wTei, and wSan with all other Wolbachia infections. So far, the cytoplasmic incompatibility properties of different Wolbachia variants are explained assuming a single pair of modification and rescue factors specific to each variant. This study shows that a given Wolbachia variant can possess multiple rescue determinants corresponding to different CI systems. In addition, our results: (a) suggest that wTei appears to behave in D. simulans as a suicide mod(+) resc(-) strain, (b) unravel unique CI properties, and (c) provide a framework to understand the diversity and the evolution of new CI-compatibility types.
- Published
- 2008
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43. Methane and carbon dioxide emission in a two-phase olive oil mill sludge windrow pile during composting.
- Author
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Manios T, Maniadakis K, Boutzakis P, Naziridis Y, Lasaridi K, Markakis G, and Stentiford EI
- Subjects
- Greece, Industrial Waste, Olive Oil, Air Pollutants analysis, Carbon Dioxide analysis, Methane analysis, Plant Oils, Soil
- Abstract
The aim of this work was to make some preliminary evaluations on CO(2) and CH(4) emissions during composting of two-phase olive oil mill sludge (OOMS). OOMS, olive tree leaves (OTL) and shredded olive tree branches (OTB) were used as feedstock for Pile I and Pile II with a 1:1:1 and 1:1:2v/v ratio, respectively. Each pile was originally 1.2m high, 2.0m wide and approximately 15.0m long. Four 500 ml volume glass funnels were inverted and introduced in each pile, two in the core (buried 50-60 cm from the surface) and two near the surface under a thin 10-15 cm layer of the mixture. Thin (0.5 cm diameter) plastic, 80 cm long tubes were connected to the funnels. A mobile gas analyser (GA2000) was used to measure the composition (by volume) of O2, CO2 and CH4 on a daily basis. The funnels were removed prior to each turning and reinserted afterwards. From each pair of funnels (core and surface) of both piles, one was kept closed between samplings. Two way ANOVA was used to test differences between piles and among the tubes. Post hoc Tukey tests were also used to further investigate these differences. There was a significant difference (at p<0.001) in the two piles for all three gases. The average concentrations of O2, CO2 and CH4 in Pile I, from all four funnels was 16.86%, 3.89% and 0.25%, respectively, where for Pile II the average values were 18.07%, 2.38% and 0.04%, respectively. The presence of OOMS in larger amounts in Pile I (resulting in more intense decomposing phenomena), and the larger particle size of OTB in Pile II (resulting in increasing porosity) are the probable causes of these significant differences. Samples from open funnels presented lower, but not significantly lower, O2 composition (higher for CO2 and CH4) in comparison with closed funnels in both depths and both piles. Not significant were also the different mean gas compositions between core and surface funnels in the same pile.
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- 2007
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44. Wolbachia transfer from Drosophila melanogaster into D. simulans: Host effect and cytoplasmic incompatibility relationships.
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Poinsot D, Bourtzis K, Markakis G, Savakis C, and Merçot H
- Subjects
- Animals, Female, Male, Rickettsiaceae isolation & purification, Rickettsiaceae Infections transmission, Species Specificity, Cytoplasm physiology, Drosophila microbiology, Rickettsiaceae Infections physiopathology
- Abstract
Wolbachia are maternally transmitted endocellular bacteria causing a reproductive incompatibility called cytoplasmic incompatibility (CI) in several arthropod species, including Drosophila. CI results in embryonic mortality in incompatible crosses. The only bacterial strain known to infect Drosophila melanogaster (wDm) was transferred from a D. melanogaster isofemale line into uninfected D. simulans isofemale lines by embryo microinjections. Males from the resulting transinfected lines induce >98% embryonic mortality when crossed with uninfected D. simulans females. In contrast, males from the donor D. melanogaster line induce only 18-32% CI on average when crossed with uninfected D. melanogaster females. Transinfected D. simulans lines do not differ from the D. melanogaster donor line in the Wolbachia load found in the embryo or in the total bacterial load of young males. However, >80% of cysts are infected by Wolbachia in the testes of young transinfected males, whereas only 8% of cysts are infected in young males from the D. melanogaster donor isofemale line. This difference might be caused by physiological differences between hosts, but it might also involve tissue-specific control of Wolbachia density by D. melanogaster. The wDm-transinfected D. simulans lines are unidirectionally incompatible with strains infected by the non-CI expressor Wolbachia strains wKi, wMau, or wAu, and they are bidirectionally incompatible with strains infected by the CI-expressor Wolbachia strains wHa or wNo. However, wDm-infected males do not induce CI toward females infected by the CI-expressor strain wRi, which is found in D. simulans continental populations, while wRi-infected males induce partial CI toward wDm-infected females. This peculiar asymmetrical pattern could reflect an ongoing divergence between the CI mechanisms of wRi and wDm. It would also confirm other results indicating that the factor responsible for CI induction in males is distinct from the factor responsible for CI rescue in females.
- Published
- 1998
- Full Text
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45. Wolbachia infection and cytoplasmic incompatibility in Drosophila species.
- Author
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Bourtzis K, Nirgianaki A, Markakis G, and Savakis C
- Subjects
- Animals, Bacterial Proteins genetics, DNA-Binding Proteins genetics, Drosophila genetics, Female, Male, RNA, Bacterial analysis, RNA, Ribosomal, 16S analysis, Rickettsia genetics, Drosophila microbiology, Drosophila physiology, Fertility, Rickettsia isolation & purification
- Abstract
Forty-one stocks from 30 Drosophila species were surveyed for Wolbachia infection using PCR technology. D. sechellia and two strains of D. auraria were found to be infected and were tested for the expression of cytoplasmic incompatibility, along with D. ananassae and D. melanogaster strains, which are already known to be infected. D. ananassae and D. melanogaster show levels of incompatibility up to 25%, while D. auraria and D. sechellia exhibit levels of egg mortality approximately 60%. A dot-blot assay using the dnaA sequence as probe was developed to assess the infection levels in individual males that were used in incompatibility crosses. A positive correlation between bacterial density and cytoplasmic incompatibility was observed. The stocks examined can be clustered into at least two groups, depending on the levels of infection relative to the degree of cytoplasmic incompatibility exhibited. One group, containing D. simulans Hawaii, D. sechellia, and D. auraria, exhibits high levels of cytoplasmic incompatibility relative to levels of infection; all the other species and D. simulans Riverside exhibit significantly lower levels of cytoplasmic incompatibility relative to levels of infection. These data show that, in addition to bacterial density, bacterial and/ or host factors also affect the expression of cytoplasmic incompatibility.
- Published
- 1996
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46. Salmonellosis associated with homemade ice cream. An outbreak report and summary of outbreaks in the United States in 1966 to 1976.
- Author
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Gunn RA and Markakis G
- Subjects
- Adolescent, Adult, Child, Child, Preschool, Food Contamination, Food Handling standards, Food Microbiology, Humans, Middle Aged, Salmonella Food Poisoning epidemiology, United States, Disease Outbreaks epidemiology, Eggs adverse effects, Salmonella Food Poisoning etiology
- Abstract
During the period 1966 to 1976, 22 outbreaks with 292 individual cases of salmonellosis associated with the consumption of homemade ice cream were reported to the Center for Disease Control. Salmonella typhimurium accounted for 45% of the outbreaks. The source of eggs used was known in 13 outbreaks, and all were ungraded farm- or home-produced eggs, a potential source of salmonellae. In 11 outbreaks, the method of preparation was known, and in all, the ice-cream custard had not been cooked before freezing.
- Published
- 1978
- Full Text
- View/download PDF
47. [Coexistence of Marchesani's hereditary syndrome and Marfan's syndrome in 4 members of the same family].
- Author
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Matsukas G, Koukourakis G, and Markakis G
- Subjects
- Adolescent, Adult, Female, Heart Defects, Congenital, Humans, Male, Middle Aged, Myopia genetics, Dwarfism genetics, Eye Abnormalities, Glaucoma genetics, Marfan Syndrome genetics
- Published
- 1968
48. [Acute leukemia simulating chloroma].
- Author
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CHANIOTIS NL, FRONIMOPOULOS J, MARKAKIS G, and POYAGOS S
- Subjects
- Humans, Acute Disease, Diagnosis, Differential, Leukemia diagnosis, Sarcoma, Myeloid
- Published
- 1955
49. [Results following aortic valve replacement].
- Author
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Bernhard A, Markakis G, Krug A, and Fischer K
- Subjects
- Disability Evaluation, Follow-Up Studies, Germany, West, Humans, Physical Exertion, Postoperative Complications epidemiology, Prognosis, Time Factors, Aortic Valve Insufficiency surgery, Aortic Valve Stenosis surgery, Heart Valve Prosthesis mortality
- Published
- 1973
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