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Yazıcı D, Fersahoğlu MM, Fersahoğlu T, Bulut NE, Çiğiltepe H, Çeler Ö, Sancak S, Sulu C, Durcan E, Şahin S, Polat Korkmaz Ö, Bozdoğan Polat SH, Taşkın E, İşeri C, Gürsoy E, Küçük Yetgin M, Kaya T, Özdemir F, Mestanoğlu İstanbullu N, Kıyıcı S, Öztürk S, Güngör K, Can B, Sargın M, Tabak Z, Averi S, Nazlı A, Polat Y, Akbas F, Tekin S, Topaloğlu Ö, Boz Uzaldı E, Çatalçam S, Bayraktaroğlu T, Çalıkoğlu BF, Nasifova V, Soyluk Selçukbiricik Ö, Karşıdağ K, Sezer H, Özışık S, Bulut H, Bekdemir B, Deyneli O, Dinçer C, Gogas Yavuz D, İlkova H, Yumuk VD. Status of Weight Change, Lifestyle Behaviors, Depression, Anxiety, and Diabetes Mellitus in a Cohort with Obesity during the COVID-19 Lockdown: Turk-Com Study Group. Obes Facts 2022; 15:528-539. [PMID: 35545017 PMCID: PMC9372476 DOI: 10.1159/000522658] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 02/07/2022] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION The coronavirus disease 2019 (COVID-19) pandemic led to a lockdown period. Confinement periods have been related to unhealthy lifestyle behaviors. Our study aimed to determine weight change, changes in eating and exercise habits, the presence of depression and anxiety, and diabetes mellitus (DM) status in a cohort of patients with obesity. METHODS The study was undertaken in nine centers of Collaborative Obesity Management (COM) of the European Association for the Study of Obesity (EASO) in Turkey. An e-survey about weight change, eating habits, physical activity status, DM status, depression, and anxiety was completed by patients. The International Physical Activity Questionnaire (IPAQ) score was used to determine physical activity in terms of metabolic equivalents (METs). A healthy nutrition coefficient was calculated from the different categories of food consumption. The Patient Health Questionnaire (PHQ-9) and General Anxiety Disorder (GAD-7) Questionnaire were used for determining depression and anxiety, respectively. RESULTS Four hundred twenty-two patients (age 45 ± 12.7 years, W/M = 350/72) were included. The healthy nutrition coefficient before the pandemic was 38.9 ± 6.2 and decreased to 38.1 ± 6.4 during the pandemic (p < 0.001). Two hundred twenty-nine (54.8%) patients gained weight, 54 (12.9%) were weight neutral, and 135 (32.3%) lost weight. Patients in the weight loss group had higher MET scores and higher healthy nutrition coefficients compared with the weight gain and weight-neutral groups (p < 0.001). The PHQ and GAD scores were not different between the groups. Percent weight loss was related to healthy nutrition coefficient (CI: 0.884 [0.821-0.951], p = 0.001) and MET categories (CI: 0.408 [0.222-0.748], p = 0.004). One hundred seventy patients had DM. Considering glycemic control, only 12 (8.4%) had fasting blood glucose <100 mg/dL and 36 (25.2%) had postprandial BG <160 mg/dL. When patients with and without DM were compared in terms of dietary compliance, MET category, weight loss status, PHQ-9 scores, and GAD-7 scores, only MET categories were different; 29 (11.7%) of patients in the nondiabetic group were in the highly active group compared with 5 (2.9%) in the diabetic group. CONCLUSION The COVID-19 lockdown resulted in weight gain in about half of our patients, which was related to changes in physical activity and eating habits. Patients with DM who had moderate glycemic control were similar to the general population in terms of weight loss but were less active.
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Affiliation(s)
- Dilek Yazıcı
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
- *Dilek Yazıcı,
| | - Mehmet Mahir Fersahoğlu
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Tuba Fersahoğlu
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Nuriye Esen Bulut
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Hüseyin Çiğiltepe
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Özgen Çeler
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Seda Sancak
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Cem Sulu
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | - Emre Durcan
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | - Serdar Şahin
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | | | | | - Eren Taşkın
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | - Ceren İşeri
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | - Evren Gürsoy
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | | | - Tuğba Kaya
- Health Sciences University Bursa Yİ Education and Research Hospital COM, Bursa, Turkey
| | - Feyza Özdemir
- Health Sciences University Bursa Yİ Education and Research Hospital COM, Bursa, Turkey
| | | | - Sinem Kıyıcı
- Health Sciences University Bursa Yİ Education and Research Hospital COM, Bursa, Turkey
| | - Serkan Öztürk
- Medeniyet University Göztepe Education and Research Hospital COM, Istanbul, Turkey
| | - Kağan Güngör
- Medeniyet University Göztepe Education and Research Hospital COM, Istanbul, Turkey
| | - Bülent Can
- Medeniyet University Göztepe Education and Research Hospital COM, Istanbul, Turkey
| | - Mehmet Sargın
- Medeniyet University Göztepe Education and Research Hospital COM, Istanbul, Turkey
| | - Zeynep Tabak
- Health Sciences University Istanbul Education and Research Hospital COM, Istanbul, Turkey
| | - Sevda Averi
- Health Sciences University Istanbul Education and Research Hospital COM, Istanbul, Turkey
| | - Aysun Nazlı
- Health Sciences University Istanbul Education and Research Hospital COM, Istanbul, Turkey
| | - Yeliz Polat
- Health Sciences University Istanbul Education and Research Hospital COM, Istanbul, Turkey
| | - Feray Akbas
- Health Sciences University Istanbul Education and Research Hospital COM, Istanbul, Turkey
| | - Sakin Tekin
- Bülent Ecevit University Medical Faculty COM, Zonguldak, Turkey
| | | | - Ebru Boz Uzaldı
- Bülent Ecevit University Medical Faculty COM, Zonguldak, Turkey
| | - Safiye Çatalçam
- Bülent Ecevit University Medical Faculty COM, Zonguldak, Turkey
| | | | | | | | | | | | - Havva Sezer
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
| | - Seçil Özışık
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
| | - Hande Bulut
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
| | - Bahar Bekdemir
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
| | - Oğuzhan Deyneli
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
| | - Ceyda Dinçer
- Marmara University Medical Faculty COM, Istanbul, Turkey
| | | | - Hasan İlkova
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
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Özdemir F, Arslan S, Eken CB. Biofilm formation, icaABCD genes and agr genotyping of Staphylococcus aureus from fish and ground beef. AAlim 2021. [DOI: 10.1556/066.2020.00203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
AbstractA total of 46 Staphylococcus aureus isolates from fish and ground beef were tested for the agr types, icaABCD genes, and biofilm formation at 12, 25 and 37 °C by the microtiter plate and the MTT assays. All isolates were positive for the icaABD genes, while 97.8% were positive for the icaC. All isolates produced biofilms at 37 and 25 °C, but 93.5% of them were also biofilm producers at 12 °C. There was no significant difference in biofilm formation between 25 and 37 °C using the crystal violet assay (P > 0.05). However, statistically significant differences were detected between 12 and 25 °C as well as 12 and 37 °C (P < 0.05). All isolates were significantly different in biofilm production by the MTT assay at all tested temperatures. Furthermore, a relationship between the presence of the icaABCD genes and biofilm formation was observed. The agr type I was the most prevalent (54.4%) among the isolates, followed by agr type II (41.3%) and agr type III (9.6%). In this study, the S. aureus isolates exhibited biofilm formation ability responsible for persistence of bacteria in foods, which may lead to food spoilage and human health problems.
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Affiliation(s)
- F. Özdemir
- Department of Biology, Faculty of Arts and Sciences, Bolu Abant Izzet Baysal University, 14030 Gölköy, Bolu, Turkey
| | - S. Arslan
- Department of Biology, Faculty of Arts and Sciences, Bolu Abant Izzet Baysal University, 14030 Gölköy, Bolu, Turkey
| | - C. B. Eken
- Department of Biology, Faculty of Arts and Sciences, Bolu Abant Izzet Baysal University, 14030 Gölköy, Bolu, Turkey
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Uğur Görgün A, Aslan E, Kül M, İlhan S, Dimlioğlu G, Bor M, Özdemir F. Association between radionuclides ( 210Po and 210Pb) and antioxidant enzymes in oak (Quercus coccifera) and mastic tree (Pistacia lentiscus). J Environ Radioact 2017; 174:71-77. [PMID: 27577696 DOI: 10.1016/j.jenvrad.2016.08.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 08/16/2016] [Accepted: 08/23/2016] [Indexed: 06/06/2023]
Abstract
The activity levels of naturally occurring radionuclides Polonium-210 and lead-210 in different subjects including plant species have direct or indirect impact on human beings. High levels of ionising radiation cause oxidative stress and the interaction between antioxidative defense and radionuclides is not well established in plant systems. In this study, we aimed to understand the impact of oxidative stress caused by 210Po and 210Pb in two Mediterranean plants; Quercus coccifera and Pistacia lentiscus. We analysed the constitutive and seasonal levels of 210Po, 210Pb, lipid peroxidation levels, superoxide dismutase (SOD) and ascorbate peroxidase (APX) activities in the field-collected samples. The highest activity concentrations of 210Po and 210Pb were detected in both plants in summer and Q. coccifera had higher levels than that of P. lentiscus. SOD and APX activity trends were different between oak and mastic; as compared to P. lentiscus, Q. coccifera efficiently used the two major components of antioxidative defense. Lipid peroxidation levels were low in both plants in all seasons except that of spring which were in good agreement with high antioxidant enzyme activities. In conclusion, we found that high 210Po and 210Pb activity concentrations in oak and mastic did not interfere with their growth and life cycles. The ability of both plants for survival and adaptation to Mediterranean environmental constraints provided an additional advantage for coping radionuclide induced oxidative stress as well.
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Affiliation(s)
- A Uğur Görgün
- University of Ege, Institute of Nuclear Sciences, İzmir, Turkey
| | - E Aslan
- University of Ege, Institute of Nuclear Sciences, İzmir, Turkey
| | - M Kül
- University of Ege, Institute of Nuclear Sciences, İzmir, Turkey
| | - S İlhan
- University of Ege, Faculty of Science, Department of Biology, İzmir, Turkey
| | - G Dimlioğlu
- University of Ege, Faculty of Science, Department of Biology, İzmir, Turkey
| | - M Bor
- University of Ege, Faculty of Science, Department of Biology, İzmir, Turkey.
| | - F Özdemir
- University of Ege, Faculty of Science, Department of Biology, İzmir, Turkey
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Arslan S, Özdemir F. Molecular characterization and detection of enterotoxins, methicillin resistance genes and antimicrobial resistance of Staphylococcus aureus from fish and ground beef. Pol J Vet Sci 2017; 20:85-94. [PMID: 28525337 DOI: 10.1515/pjvs-2017-0012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A total of 120 samples including 40 freshwaterfish(Oncorhynchus mykiss), 40 seawater fish (Sparus aurata) and 40 ground beef samples were examined for the presence of Staphylococcus aureus. The isolates were identified using biochemical tests and a PCR for the species-specific fragment (Sa442) and thermonuclease gene (nucA). The presence of staphylococcal enterotoxin genes (sea, seb, sec, sed and see), toxin genes (eta, etb, tsst), methicillin resistance gene (mecA) and some phenotypic virulence factors was also tested. Genotypic characterization of the isolates was analyzed by PCR-RFLP of the coa gene. Overall, 36 (30%) meat samples were contaminated with S. aureus. Of the 36 isolates, 3 (8.3%) were found to be positive for enterotoxin genes. Only 1 isolate (5.9%) from ground beef had the sea gene. In addition, 1 (12.5%) of the freshwater fish and 1 (9.1%) of the seawater fish carried both the sea and sed genes. The presence of seb, sec, see, eta, etb and tsst was not detected among the isolates of S. aureus. The amplified coa gene revealed five different clusters. Seven and six distinct RFLP patterns were obtained with AluI and HaeIII digestion, respectively. All isolates were found to be positive for slime, hemolytic and DNase activity while 41.7% of them were beta-lactamase positive. The presence of methicillin resistance was neither detected by PCR nor the disk diffusion method. A total of 94.4% of the isolates were resistant to at least one antimicrobial while 44.4% of them were resistant to at least two or more antimicrobials.
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Kirac D, Eraydin F, Avcilar T, Ulucan K, Özdemir F, Guney AI, Kaspar EÇ, Keshi E, Isbir T. Effects of PAX9 and MSX1 gene variants to hypodontia, tooth size and the type of congenitally missing teeth. Cell Mol Biol (Noisy-le-grand) 2016; 62:78-84. [DOI: 10.14715/cmb/2016.62.13.14] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 12/28/2016] [Indexed: 11/18/2022]
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Kaya Akyüzlü D, Kayaaltı Z, Yüksel B, Özdemir F, Söylemezoğlı T. Maternal MDR1 C1236T polymorphism and mercury levels in a triad of mother–placenta–fetus. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kaya Akyüzlü D, Kayaaltı Z, Özdemir F, Yüksel B, Söylemezoğlu T. Effect of transferrin -576G/A and 3296G>A gene polymorphisms on blood iron and lead levels in beta-thalassemia major patients. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.2025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kayaaltı Z, Söylemez D, Kaya Akyüzlü D, Özdemir F, Yüksel B, Söylemezoğlu T. Does HFE H63D gene polymorphism has an effect on blood iron, lead and cadmium levels of Turkish beta-thalassemia major patients? Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Kayaaltı Z, Akyüzlü DK, Özdemir F, Yüksel B, Söylemezoğlu T. Association between MDR1 C1236T polymorphism and blood, hair and urinary mercury levels in Turkish women. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kaya Akyüzlü D, Kayaaltı Z, Özdemir F, Yüksel B, Söylemezoğlu T. Effect of metallothionein polymorphism on blood, hair and urinary mercury levels in Turkish women. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Kayaaltı Z, Kaya Akyüzlü D, Yüksel B, Özdemir F, Söylemezoğlu T. Is there a relationship between metallothionein polymorphism and mercury levels of maternal blood, placental tissue and cord blood? Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.2008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Çakır-Atabek H, Özdemir F, Çolak R. Oxidative stress and antioxidant responses to progressive resistance exercise intensity in trained and untrained males. Biol Sport 2015; 32:321-8. [PMID: 26681835 PMCID: PMC4672164 DOI: 10.5604/20831862.1176302] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 08/11/2014] [Accepted: 07/02/2015] [Indexed: 11/25/2022] Open
Abstract
The relationship between oxidative stress and some exercise components of resistance exercise (e.g. intensity, exercise volume) has not been clearly defined. Additionally, the oxidative stress markers may respond differently in various conditions. This study aims to determine the effects of progressive intensity of resistance exercise (RE) on oxidative stress and antioxidants in trained and untrained men, and also to investigate the possible threshold intensity required to evoke oxidative stress. RE trained (N=8) and untrained (N=8) men performed the leg extension RE at progressive intensities standardized for total volume: 1x17 reps at 50% of one-repetition maximum (1RM); 1x14 reps at 60% of 1RM; 1x12 reps at 70% of 1RM; 2x5 reps at 80% of 1RM; and 3x3 reps at 90% of 1RM. Blood samples were drawn before (PRE) and immediately after each intensity, and after 30 minutes, 60 minutes and 24 hours following the RE. Lipid-hydroperoxide (LHP) significantly increased during the test and then decreased during the recovery in both groups (p<0.05); the POST-24 h LHP level was lower than PRE-LHP. Protein carbonyl (PCO) and superoxide dismutase (SOD) significantly increased (p<0.05); however, 8-hydroxy-2’-deoxyguanosine (8-OHdG) and glutathione (GSH) were not affected by the RE (p > 0.05). The results indicated that there was no significant training status x intensity interaction for examined variables (p > 0.05). Standardized volume of RE increased oxidative stress responses. Our study suggests that lower intensity (50%) is enough to increase LHP, whereas higher intensity (more than 80%) is required to evoke protein oxidation.
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Affiliation(s)
- H Çakır-Atabek
- Department of Coach Training, Faculty of Sports Science, Anadolu University, Eskişehir, Turkey
| | - F Özdemir
- Department of Biochemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - R Çolak
- School of Physical Education and Sports, Ardahan University, Ardahan, Turkey
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Kaya-Akyüzlü D, Kayaaltı Z, Özdemir F, Söylemezoğlu T. Genetic susceptibility to autism: A case report. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kayaaltı Z, Kaya-Akyüzlü D, Söylemez-Gökyer D, Özdemir F, Söylemezoğlu T. Is there a relationship between VDR FokI gene polymorphism and beta-thalassemia? Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.1051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kayaalt Z, Kaya-Akyüzü D, Kartal Y, Özdemir F, Söylemezoğlu T. Thalassemia is not associated with G > A-IRP1 polymorphism in Turkish population. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.1084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Oztürk F, Özdemir F, Kaya-Akyüzlü D, Kayaalti Z, Avcı A, Söylemezoğlu T. Is thalassemia associated with MnSOD Ala16Val polymorphism in Turkish population? Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Karabudak T, Bor M, Özdemir F, Türkan İ. Glycine betaine protects tomato (Solanum lycopersicum) plants at low temperature by inducing fatty acid desaturase7 and lipoxygenase gene expression. Mol Biol Rep 2014; 41:1401-10. [PMID: 24390244 DOI: 10.1007/s11033-013-2984-6] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Accepted: 12/24/2013] [Indexed: 02/01/2023]
Abstract
Cold stress is among the environmental stressors limiting productivity, yield and quality of agricultural plants. Tolerance to cold stress is associated with the increased unsaturated fatty acids ratio in the plant membranes which are also known to be substrates of octadecanoid pathway for jasmonate and other oxylipins biosynthesis. Accumulation of osmoprotectant, glycine betaine (GB) is well known to be effective in the protecting membranes and mitigating cold stress effects but, the mode of action is poorly understood. We studied the role of GB in cold stress responses of two tomato cultivated varieties; Gerry (cold stress sensitive) and T47657 (moderately cold stress tolerant) and compared the differences in lypoxygenase-13 (TomLOXF) and fatty acid desaturase 7 (FAD7) gene expression profiles and physiological parameters including relative growth rates, relative water content, osmotic potential, photosynthetic efficiency, membrane leakage, lipid peroxidation levels. Our results indicated that GB might have a role in inducing FAD7 and LOX expressions for providing protection against cold stress in tomato plants which could be related to the desaturation process of lipids leading to increased membrane stability and/or induction of other genes related to stress defense mechanisms via octadecanoid pathway or lipid peroxidation products.
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Affiliation(s)
- T Karabudak
- Department of Biology, Science Faculty, Ege University, Bornova, 35100, Izmir, Turkey
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Yesilbalkan OU, Özdemir F. 74 Comparison of Fatigue of Patients With Cancer and Their Family Caregivers. Eur J Oncol Nurs 2012. [DOI: 10.1016/s1462-3889(12)70088-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Arslan S, Eyi A, Özdemir F. Spoilage potentials and antimicrobial resistance of Pseudomonas spp. isolated from cheeses. J Dairy Sci 2012; 94:5851-6. [PMID: 22118075 DOI: 10.3168/jds.2011-4676] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2011] [Accepted: 09/03/2011] [Indexed: 11/19/2022]
Abstract
Pseudomonas spp. are aerobic, gram-negative bacteria that are recognized as major food spoilage microorganisms. A total of 32 (22.9%) Pseudomonas spp. from 140 homemade white cheese samples collected from the open-air public bazaar were isolated and characterized. The aim of the present study was to investigate the biochemical characteristics, the production of extracellular enzymes, slime and β-lactamase, and antimicrobial susceptibility of Pseudomonas spp. isolated from cheeses. The identified isolates including Pseudomonas pseudoalcaligenes, Pseudomonas alcaligenes, Pseudomonas aeruginosa, Pseudomonas fluorescens biovar V, and P. pseudoalcaligenes ssp. citrulli were found to produce extracellular enzymes, respectively: protease and lecithinase production (100%), and lipase activity (85.7, 42.9, 100, and 100%, and nonlipolytic, respectively). The isolates did not produce slime and had no detectable β-lactamase activity. The antimicrobial susceptibility of the isolates was tested using the disk diffusion method. Pseudomonas spp. had the highest resistance to penicillin G (100%), then sulphamethoxazole/trimethoprim (28.1%). However, all Pseudomonas spp. isolates were 100% susceptible to ceftazidime, ciprofloxacin, amikacin, gentamicin, and imipenem. Multidrug-resistance patterns were not observed among these isolates. In this study, Pseudomonas spp., exhibiting spoilage features, were isolated mainly from cheeses. Isolation of this organism from processed milk highlights the need to improve the hygienic practices. All of the stages in the milk processing chain during manufacturing have to be under control to achieve the quality and safety of dairy products.
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Affiliation(s)
- S Arslan
- Abant Izzet Baysal University, Faculty of Arts and Sciences, Department of Biology, 14280 Gölköy/Bolu, Turkey.
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Özdemir F, Erboz S, Kazandi A, Kandiloglu G, Ceylan C, Özyürck R, Coskun S, Arcasoy M. Acrokeratosis verruciformis and congestive dilated cardiomyopathy. Occurrence of two inherited autosomal dominant conditions in the same patient. J Eur Acad Dermatol Venereol 2006. [DOI: 10.1111/j.1468-3083.1997.tb00465.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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