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Öğe The Adiponectin variants contribute to the genetic background of type 2 diabetes in Turkish population(ELSEVIER, 2014) Arikoglu, Hilal; Ozdemir, Hulya; Kaya, Dudu Erkoc; Ipekci, Suleyman Hilmi; Arslan, Ahmet; Kayis, Seyit Ali; Gonen, Mustafa SaitAdiponectin, an adipose tissue specific protein encoded by the Adiponectin gene, modulates insulin sensitivity and plays an important role in regulating energy homeostasis. Many studies have shown that single nucleotide polymorphisms (SNPs) in the Adiponectin gene are associated with low plasma Adiponectin levels, insulin resistance and an increased risk of type 2 diabetes mellitus. The aim of the present study was to evaluate the contribution of the Adiponectin gene polymorphisms in genetic background of type 2 diabetes in a Turkish population. In total, 169 unrelated and non-obese diabetic patients and 119 age- and BMI-matched nondiabetic individuals with no family history of diabetes were enrolled in this study. We detected a significant association between type 2 diabetes and two SNPs: SNP - 11391G>A. which is located in the promoter region of the Adiponectin gene, and SNP + 276G > T, which is found in intron 2 of the gene (P < 0.05). The silence SNP G15G ( + 45T > G) in exon 1 and SNP + 349A > G in intron 2 also showed a weak association with type 2 diabetes (P = 0.06 and P = 0.07, respectively), while SNPs - 3971A>G in intron 1 and Y111H, R112C and H241P in exon 3 showed no association (P > 0.05). In conclusion, these findings suggest that Adiponectin gene polymorphisms might be effective on susceptibility for type 2 diabetes development which emerged from the interactions between multiple genes, variants and environmental factors. (C) 2013 Elsevier B.V. All rights reserved.Öğe bFGF regulates gene profiling of dental-MSCs isolated from deciduous and permanent teeth(ELSEVIER SCIENCE BV, 2016) Hakki, Sema S.; Bozkurt, Buket S.; Karaoz, Erdal; Hakki, Erdogan E.; Kayis, Seyit Ali[Abstract not Available]Öğe Biostimulation with diode laser positively regulates cementoblast functions, in vitro(SPRINGER LONDON LTD, 2017) Bozkurt, Serife Buket; Hakki, Erdogan E.; Kayis, Seyit Ali; Dundar, Niyazi; Hakki, Sema S.The aim of this study was to evaluate the effects of diode laser biostimulation on cementoblasts (OCCM. 30). A total of 40 root plates were obtained from healthy third molar teeth and assigned to the following two groups: (1) control group and (2) laser-treated group. Root plates were placed into the cell culture inserts, and OCCM. 30 cells were seeded onto root plates. Cells were irradiated with a low level of diode laser (power: 0.3 W in continuous wave, 60 s/cm(2)). Proliferation and mineralized tissue-associated gene's and BMP's messenger RNA (mRNA) expressions of cementoblasts were evaluated. Total RNAs were isolated on day 3 and integrin-binding sialoprotein (Ibsp), bone gammacarboxyglutamate protein (Bglap), Type I collagen (Col1a1), osteoblastic transcription factor, runt-related transcription factor (Runx2), and Bone Morphogenetic Protein (BMP)-2, 3, 4, 6, and 7 mRNA expressions were determined using quantitative RT-PCR. von Kossa staining was performed to evaluate biomineralization of OCCM. 30 cells. In the proliferation experiment, while there was no significant difference until 96 h, laser irradiation retarded the decrease in cell proliferation trend after 96 h compared to the untreated control group. Statistically significant increase in Ibsp, Bglap, and BMP-2,3,6,7 mRNA expressions were noted in the laser groups when compared to the untreated control group (p < 0.05). Laser irradiation induced mineralized nodule formation of cementoblasts. The results of this study reveal that the biostimulation setting of diode laser modulates the behavior of cementoblasts inducing mineralized tissue-associated gene's mRNA expressions and mineralization. Therefore, biostimulation can be used during regenerative periodontal therapies to trigger cells with periodontal attachment apparatus.Öğe Bone morphogenetic protein-2, -6, and -7 differently regulate osteogenic differentiation of human periodontal ligament stem cells(WILEY-BLACKWELL, 2014) Hakki, Sema S.; Bozkurt, Buket; Hakki, Erdogan E.; Kayis, Seyit Ali; Turac, Gizem; Yilmaz, Irem; Karaoz, ErdalThe utility of adult stem cells for bone regeneration may be an attractive alternative in the treatment of extensive injury, congenital malformations, or diseases causing large bone defects. To create an environment that is supportive of bone formation, signals from molecules such as the bone morphogenetic proteins (BMPs) are required to engineer fully viable and functional bone. We therefore determined whether BMP-2, -6, and -7 differentially regulate the (1) proliferation, (2) mineralization, and (3) mRNA expression of bone/mineralized tissue associated genes of human periodontal ligament stem cells (hPDLSCs), which were obtained from periodontal ligament tissue of human impacted third molars. hPDLSCs from six participants were isolated and characterized using histochemical and immunohistochemical methods. A real-time cell analyzer was used to evaluate the effects of BMP-2, -6, and -7 on the proliferation of hPDLSCs. hPDLSCs were treated with Dulbecco's modified Eagle's medium containing different concentrations of BMP-2, -6, and -7 (10, 25, 50, 100 ng/mL) and monitored for 264 hours. After dose-response experiments, 50 and 100 ng/mL concentrations of BMPs were used to measure bone/mineralized tissue-associated gene expression. Type I collagen, bone sialoprotein, osteocalcin, osteopontin, and osteoblastic transcription factor Runx2 mRNA expression of hPDLSCs treated with BMP-2, -6, and -7, were evaluated using quantitative RT-PCR. Biomineralization of hPDLSCs was assessed using von Kossa staining. This study demonstrated that BMPs at various concentrations differently regulate the proliferation, mineralization, and mRNA expression of bone/mineralized tissue associated genes in hPDLSCs. BMPs regulate hPDLSC proliferation in a time and dose-dependent manner when compared to an untreated control group. BMPs induced bone/mineralized tissue-associated gene mRNA expression and biomineralization of hPDLSCs. The most pronounced induction occurred in the BMP-6 group in the biomineralization of the hPDLSCs. Our data suggest that BMP-2, -6, and -7 are potent regulators of hPDLSC gene expression and biomineralization. Employing BMPs with hPDLSCs isolated from periodontal ligament tissues provides a promising strategy for bone tissue engineering. (c) 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 102B: 119-130, 2014.Öğe Boron enhances strength and alters mineral composition of bone in rabbits fed a high energy diet(ELSEVIER GMBH, URBAN & FISCHER VERLAG, 2013) Hakki, Sema S.; Dundar, Niyazi; Kayis, Seyit Ali; Hakki, Erdogan E.; Hamurcu, Mehmet; Kerimoglu, Ulku; Baspinar, NuriAn experiment was performed to determine whether boron had a beneficial effect on bone strength and composition in rabbits with apparent adiposity induced by a high energy diet. Sixty female New Zealand rabbits, aged 8 months, were randomly divided into five groups with the following treatments for seven months: control 1, fed alfalfa hay only (5.91 MJ/kg); control 2, high energy diet (11.76 MJ and 3.88 mg boron/kg); B10, high energy diet + 10 mg/kg body weight boron gavage/96 h; B30, high energy diet + 30 mg/kg body weight boron gavage/96 h; B50, high energy diet + 50 mg/kg body weight boron gavage/96 h. Bone boron concentrations were lowest in rabbits fed the high energy diet without boron supplementation, which suggested an inferior boron status. Femur maximum breaking force was highest in the B50 rabbits. Tibia compression strength was highest in B30 and B50 rabbits. All boron treatments significantly increased calcium and magnesium concentrations, and the B30 and B50 treatments increased the phosphorus concentration in tibia of rabbits fed the high energy diet. The B30 treatment significantly increased calcium, phosphorus and magnesium concentrations in femur of rabbits fed the high energy diet. Principal component analysis of the tibia minerals showed that the three boron treatments formed a separate cluster from controls. Discriminant analysis suggested that the concentrations of the minerals in femur could predict boron treatment. The findings indicate boron has beneficial effects on bone strength and mineral composition in rabbits fed a high energy diet. (C) 2012 Elsevier GmbH. All rights reserved.Öğe Comparison of Different Sources of Mesenchymal Stem Cells: Palatal versus Lipoaspirated Adipose Tissue(KARGER, 2017) Hakki, Sema S.; Turac, Gizem; Bozkurt, S. Buket; Kayis, Seyit Ali; Hakki, Erdogan E.; Sahin, Eren; Subasi, CansuObjectives: The purpose of this study was to compare the proliferation and differentiation potential of mesenchymal stem cells (MSCs) derived from palatal adipose tissue (PAT) and lipoaspirated adipose tissue (LAT). Materials and Methods: PATs were obtained from 2 healthy female patients undergoing surgery for gingival recession, and LATs were obtained from 2 healthy female patients undergoing plastic surgery. LAT-and PAT-derived MSCs were confirmed by flow cytometry using MSC-specific surface markers. The multilineage differentiation capacity of the MSCs was analyzed. The expression of immunophenotyping, embryonic, and differentiation markers was compared between both MSC lines. The proliferation of PAT-and LAT-MSCs was evaluated using a real-time cell analyzer, and telomerase activity was determined using an ELISA-based TRAP assay. Stem cells isolated from PAT and LAT were analyzed by real-time PCR and whole genome array analysis. Results: The cells isolated from PAT had MSC characteristics. In addition, PAT-MSCs had significantly higher alkaline phosphatase activity and osteogenic potential than LAT-MSCs. Although the proliferation and telomerase activities of LAT-MSCs were higher than those of PAT-MSCs, the difference was not statistically significant. The level of embryonic stem cell markers (Oct4 and Nanog) was higher in LAT-MSCs than in PAT-MSCs. The whole genome array analysis demonstrated that 255 gene sequences were differentially expressed, with more than a twofold change in expression. Conclusions: This is the first comparative analysis of the isolation and characterization of MSCs from PAT and LAT. PAT is an accessible source of MSCs, which could be used in periodontal and craniofacial tissue engineering. (C) 2017 S. Karger AG, BaselÖğe Comparison of Mesenchymal Stem Cells Isolated From Pulp and Periodontal Ligament(WILEY, 2015) Hakki, Sema S.; Kayis, Seyit Ali; Hakki, Erdogan E.; Bozkurt, S. Buket; Duruksu, Gokhan; Unal, Zehra Seda; Turac, GizemBackground: Cell-based therapy using mesenchymal stem cells (MSCs) seems promising to obtain regeneration of dental tissues. A comparison of tissue sources, including periodontal ligament (PDL) versus pulp (P), could provide critical information to select an appropriate MSC population for designing predictable regenerative therapies. The purpose of this study is to compare the proliferation and stemness and the MSC-specific and mineralized tissue-specific gene expression of P-MSCs and PDL-MSCs. Methods: MSCs were obtained from PDL and P tissue of premolars (n = 3) extracted for orthodontic reasons. MSC proliferation was evaluated using a real-time cell analyzer for 160 hours. Telomerase activity was evaluated by a telomeric repeat amplification protocol assay based on enzyme-linked immunosorbent assay. Total RNA was isolated from the MSCs on day 3. A polymerase chain reaction (PCR) array was used to compare the expression of MSC-specific genes. The expression of mineralized tissue-associated genes, including Type I collagen (COL I), runt-related transcription factor 2 (RunX2), bone sialoprotein (BSP), and osteocalcin (OCN) messenger RNA (mRNA), was evaluated using quantitative real-time PCR. Results: Higher proliferation potential and telomerase activity were observed in the P-MSCs compared to PDL-MSCs of premolar teeth. Fourteen of 84 genes related to MSCs were expressed differently in the PDL-MSCs versus the P-MSCs. The expressions of bone morphogenetic protein 2 (BMP2) and BMP6; sex-determining region Y-box 9 (SOX9); integrin, alpha 6 (ITGA6); melanoma cell adhesion molecule (MCAM); phosphatidylinositol glycan anchor biosynthesis, class S (PIGS); prominin 1 (PROM1); ribosomal protein L13A (RPL13A); and microphthalmia-associated transcription factor (MITF) were higher in the P-MSCs compared to the PDL-MSCs, and higher expression of matrix metalloproteinase 2 (MMP2), interleukin (IL)-6, insulin (INS), alanyl (membrane) aminopeptidase (ANPEP), and IL-10 were observed in the PDL-MSCs. However, there was no statistically significant difference in the expression of mineralized tissue-associated genes, including BSP and RunX2, between the P-MSCs and the PDL-MSCs. Higher expression of COL I and lower expression of OCN mRNA transcripts were noted in the PDL-MSCs compared to the P-MSCs. Conclusions: The results of this study suggest that MSCs isolated from P and PDL tissues show different cellular behavior. To increase the predictability of MSC-based regenerative treatment, differences in dental tissue-derived MSCs and favorable aspects of cell sources should be further clarified.Öğe Determination of reliable house keeping gene(s) for qPCR in maize under different boron dosages(ELSEVIER SCIENCE BV, 2014) Can, Hasan; Hamurcu, Mehmet; Demiral, Tijen; Pandey, Anamika; Khan, Mohd Kamran; Kayis, Seyit Ali; Avsaroglu, Zuhal Zeynep[Abstract not Available]Öğe Dietary boron does not affect tooth strength, micro-hardness, and density, but affects tooth mineral composition and alveolar bone mineral density in rabbits fed a high-energy diet(ELSEVIER GMBH, 2015) Hakki, Sema S.; Malkoc, Siddik; Dundar, Niyazi; Kayis, Seyit Ali; Hakki, Erdogan E.; Hamurcu, Mehmet; Baspinar, NuriThe objective of this study was to determine whether dietary boron (B) affects the strength, density and mineral composition of teeth and mineral density of alveolar bone in rabbits with apparent obesity induced by a high-energy diet. Sixty female, 8-month-old, New Zealand rabbits were randomly assigned for 7 months into five groups as follows: (1) control 1, fed alfalfa hay only (5.91 MJ/kg and 57.5 mg B/kg); (2) control 2, high energy diet (11.76 MJ and 3.88 mg B/kg); (3) B10, high energy diet + 10 mg B gavage/kg body weight/96 h; (4) B30, high energy diet + 30 mg B gavage/kg body weight/96 h; (5) B50, high energy diet + 50 mg B gavage/kg body weight/96 h. Maxillary incisor teeth of the rabbits were evaluated for compression strength, mineral composition, and micro-hardness. Enamel, dentin, cementum and pulp tissue were examined histologically. Mineral densities of the incisor teeth and surrounding alveolar bone were determined by using micro-CT. When compared to controls, the different boron treatments did not significantly affect compression strength, and micro-hardness of the teeth, although the B content of teeth increased in a dose-dependent manner. Compared to control 1, B50 teeth had decreased phosphorus (P) concentrations. Histological examination revealed that teeth structure (shape and thickness of the enamel, dentin, cementum and pulp) was similar in the B-treated and control rabbits. Micro CT evaluation revealed greater alveolar bone mineral density in B10 and B30 groups than in controls. Alveolar bone density of the B50 group was not different than the controls. Although the B treatments did not affect teeth structure, strength, mineral density and micro-hardness, increasing B intake altered the mineral composition of teeth, and, in moderate amounts, had beneficial effects on surrounding alveolar bone. (C) 2014 Elsevier GmbH. All rights reserved.Öğe Effect of long term heat stress and dietary restriction on the expression of small heat shock protein (sHSP) genes in rat liver tissue(2016) Bozkaya, Faruk; Atli, Mehmet Osman; Guzeloglu, Aydın; Kayis, Seyit Ali; Kaya, Mehmet Salih; Aydilek, NurettinAmaç: Bu çalışmanın amacı uzun süreli sıcaklık stresi ve yem kısıtla-masının rat karaciğer dokusunda bazı küçük ısı şoku protein (sHSP) genlerinin mRNA düzeyindeki ekspresyonu düzeyleri üzerine etkisi-nin araştırılmasıdır. Gereç ve Yöntem: Bu amaçla on haftalık yaştaki toplam 24 Spra-gue-Dawley rat 4 gruba ayrıldı. Grup I ve Grup II'deki ratlar 22C'lik ortam sıcaklığında, Grup III ve Grup IV'teki ratlar ise 38C'lik ortam sıcaklığında tutuldu. Grup I ve III'teki ratlar ad libitum olarak beslen-di, Grup II ve IV'teki ratlara ise ad libitum grupların tükettiği yemin %60'ı kadar yem verildi. Uygulama 9 hafta sürdürüldükten sonra karaciğer doku örnekleri alınarak sıvı azot içerisinde donduruldu ve RNA izolasyonuna kadar muhafaza edildi. Doku örneklerinden total RNA izole edildikten sonra HspB1, HspB5, HspB6, Hsp10 ve Hsp11 genlerinin ekspresyon düzeyleri gerçek zamanlı nicel polimeraz zin-cir reaksiyonu (RT-qPCR) yöntemi ile incelendi.Bulgular: Sıcaklık stresi HspB2, HspB8 ve Hsp70 genlerinin ekspres-yonunu önemli ölçüde arttığı, HspB1, HspB5, HspB6, Hsp10 ve Hsp11 genlerinin ekspresyonunu ise etkilemediği belirlendi. Yem kısıtla-ması HspB6 geninin expresyonunu arttırırken HspB1, HspB2, HspB5, HspB8 HspB10, HspB11 ve Hsp70 genlerinin ekspresyonunu etkile-mediği gözlendi. Uygulamalar arasında interaksiyon gözlenmedi.Öneri: Çalışmanın sonuçları uzun süreli sıcaklık stresinin rat kara-ciğer dokusundaki sHSP genlerinin ekspresyonlarını değişik düzey-lerde etkilediğini, yem kısıtlamasının sHSP genlerinin sıcaklık stresi tarafından etkilenen ekspresyonlarını değştirmediğini göstermiştir.Öğe Effect of long term heat stress and dietary restriction on the expression of small heat shock protein (sHSP) genes in rat liver tissue(Selçuk Üniversitesi, 2016) Bozkaya, Faruk; Atli, Mehmet Osman; Kayis, Seyit Ali; Kaya, Mehmet Salih; Aydilek, NurettinAim: Investigation of the effects of dietary restriction on expression of certain small heat shock protein (sHSP) genes at mRNA level in liver tissue of rats reared under long-term heat stress. Material and Method: Sprague-Dawley rats (n=24) 10 weeks of age, were equally divided into four groups. Group I and II were kept at an ambient temperature of 22°C, while Groups III and IV were reared at 38°C. Groups I and III were fed ad libitum, while Groups II and IV were fed 60% of the diet consumed by their ad libitum counterparts. The treatment continued for 9 weeks. At the end of the treatment, liver tissue samples were taken. Total RNA was isolated and mRNA expression level of the HspB1, HspB2, HspB5, HspB6, HspB8, Hsp10, Hsp11 and HspA1A genes were assessed by Real-Time PCR analysis. Results: Heat stress significantly up regulated mRNA expressions of HspB2, HspB8 and Hsp70 genes, while it did not change mRNA expressions of HspB1, HspB5, HspB6, Hsp10 and Hsp11 genes. Dietary restriction (DR) did not significantly affect the expression of HspB1, HspB2, HspB8 HspB10, HspB11 and Hsp70, while it increased mRNA expression of HspB6 gene. No interaction between treatments was observed. Conclusion: The results suggested that long term heat stress differentially affected the sHSP genes studied and DR had no affect on the heat stress mediated changes in the expression of sHSP.Öğe Effects of Single Nucleotide Polymorphisms in K-ATP Channel Genes on Type 2 Diabetes in a Turkish Population(ELSEVIER SCIENCE INC, 2012) Gonen, Mustafa Sait; Arikoglu, Hilal; Kaya, Dudu Erkoc; Ozdemir, Hulya; Ipekci, Suleyman Hilmi; Arslan, Ahmet; Kayis, Seyit AliBackground and Aims. ATP-sensitive potassium (K-ATP) channels of pancreatic beta-cells play a key role in glucose-stimulated insulin secretion mechanism. The Kir6.2 protein, forming the K-ATP channel pore inwardly, and the SUR1 protein that surrounds it forming the outside part of the channel were encoded by ABCC8 and KCNJ11 genes, respectively. Recent studies reported that the single nucleotide polymorphisms (SNPs) established in these genes are associated with defects in insulin secretion and type 2 diabetes mellitus (T2DM). We aimed to investigate the allele profiles and the risk alleles of the ABCC8 and KCNJ11 genes and to highlight the associations with the disease in patients in Konya region of Turkey where T2DM is common. Methods. In this study, 169 patients with T2DM and 119 healthy controls were included. A total of 29 SNPs in ABCC8 and KCNJ11 genes were screened by PCR-SSCP technique and sequenced. Biochemical parameters and genotype-phenotype relationships were analyzed using variance analysis. Results. R1273R silent substitution in exon 31 and 16/-3t -> c substitution in noncoding region of exon 16 of ABCC8 gene showed a significant association (OR 4.8 [95% CI 2.41-9.77], p < 0.001 and OR 3.5 [95% CI 1.64-7.40], p < 0.001 under dominant and recessive models, respectively). We detected a significant association between E/K heterozygote genotype and reduced plasma insulin level in patients with T2DM (p < 0.05). Conclusions. ABCC8 exons 16 and 31 variants increase susceptibility to T2DM and KCNJ11 E23K decreases insulin secretion in a Turkish population (C) 2012 MISS. Published by Elsevier Inc.Öğe Estimation of Indian and Turkish Hexaploid Wheat Population Structure Employing Molecular Markers(UNIV AGR SCI & VETERINARY MED CLUJ-NAPOCA, 2015) Pandey, Anamika; Khan, Mohd Kamran; Thomas, George; Hakki, Erdogan E.; Kayis, Seyit Ali; Hamurcu, Mehmet; Gezgin, SaitBread wheat (Triticum aestivum) is the most commonly grown crop due to its adaptation in a wide range of ecogeographical conditions and providing enhanced food assurance to the modern world. A diverse and rich collection is the foundation of each successful wheat improvement program. Therefore, major efforts are in progress worldwide to boost wheat production by broadening genetic diversity. Accepting this issue as a target, present study gives an overview of the major progress in the diversity and population evaluation of Indian and Turkish hexaploid wheat employing ISSR and RAPD primers. Various statistical analyses were employed for determining the hexaploid wheat population structure of India and Turkey. Results of dendrogram, scatterplots, Analysis of Molecular Variance (AMOVA) and population structure analysis were found in accordance with each other. All the experimental genotypes were clustered in two main groups, one group containing Indian varieties and another group containing both Indian and Turkish varieties reflecting the direct or indirect interbreeding among the populations of the two countries. Utilizing the genetic association of Indian and Turkish hexaploid wheat population, based on genetic distance estimated in the study, researchers worldwide may include Indian and Turkish hexaploid varieties in the wheat improvement programs and can evade the likelihood of selected germplasm becoming hereditarily consistent.Öğe Evaluation of puroindoline b as a house keeping gene in wild wheat species(CURRENT BIOLOGY LTD, 2011) Hakki, Erdogan Esref; Uygan, Songul; Hamurcu, Mehmet; Gezgin, Sait; Bozkurt, Buket Serife; Kayis, Seyit Ali[Abstract not Available]Öğe Expression of epidermal growth factor (egf) and heparin-binding egf (hb-egf) mrna in mare endometrium(KAFKAS UNIV, VETERINER FAKULTESI DERGISI, 2012) Atli, Mehmet Osman; Guzeloglu, Aydin; Kurar, Ercan; Kayis, Seyit Ali; Aslan, Selim; Semacan, Ahmet; Celik, SefaEGF and HB-EGF play crucial roles in embryonic development and peri-implantation. In this study, aim was to characterize expression profiles of EGF and HB-EGF in mare endometrium during estrous cycle and early pregnancy. Endometrium biopsies were obtained from mares on day of ovulation (d0), late diestrus (LD) and after luteolysis (AL) in the estrus phase. In pregnant groups, biopsies were taken on days 14 (P14), 18 (P18), 22 (P22) and 60 (P60). Relative expression levels of genes were quantified using real-time RT-PCR. A mixed model was fitted on the normalized data and Least Significant Difference (LSD) test was employed to determine significantly different group(s). EGF mRNA expression was up-regulated at LD compared to d0 while HB-EGF expression was not changed throughout the cycle. EGF expression was also increased during early pregnancy with the highest expression level observed on P60. Similarly, HB-EGF mRNA level was increased on P60. Pregnancy induced EGF expression on P14 and P18 compared to LD and AL whereas expression of HB-EGF was only significantly higher on P18 than that of AL. These results indicate that EGF expression is up-regulated during the cycle at late diestrus when P4 is high and is increased by pregnancy. HB-EGF expression is induced later in the pregnancy. In conclusion, EGF and HB-EGF appear to involve in the events that happen in the mare endometrium during peri-implantation period.Öğe Genetic diversity and population structure of wheat in India and Turkey(OXFORD UNIV PRESS, 2015) Khan, Mohd Kamran; Pandey, Anamika; Thomas, George; Akkaya, Mahinur S.; Kayis, Seyit Ali; Ozsensoy, Yusuf; Hamurcu, MehmetGenetic diversity among plant species offers prospects for improving the plant characteristics. Its assessment is necessary to help tackle the threats of environmental fluctuations and for the effective exploitation of genetic resources in breeding programmes. Although wheat is one of the most thoroughly studied crops in terms of genetic polymorphism studies, phylogenetic affinities of Indian and Turkish Triticum species have not been assessed to date. In this study, genetic association of 95 tetraploid and hexaploid wheat genotypes originating from India and Turkey was determined for the first time. Combined analysis of random amplified polymorphic DNA and inter-simple sequence repeat markers disclosed 177 polymorphic bands, and both the dendrogram and two-dimensional scatterplot showed similar groupings of the wheat genotypes. Turkish hexaploid varieties were basically divided into two clusters, one group showed its close association with Indian hexaploid varieties and the other with Indian tetraploid varieties. Analysis of molecular variance revealed high (77 %) genetic variation within Indian and Turkish populations. Population structure analysis elucidated distinct clustering of wheat genotypes on the basis of both geographical origin and ploidy. The results revealed in this study will support worldwide wheat breeding programmes and assist in achieving the target of sustainable wheat production.Öğe Issr Analysis of Perennial Ryegrass (Lolium Perenne L.) Genotypes and Association Study Between Phenotypes and Genotypes(Elsevier Science Bv, 2012) Kayis, Seyit Ali; Tamkoc, Ahmet; Uygan, Songul; Hakki, Erdogan EsrefBreeders can efficiently use this molecular information in their breeding programs by adding and removing photoperiod insensitive Ppd-D1a alleles to their varieties. In hexaploid wheat, photoperiod insensitive PpdD1a allele in 2D chromosome causes early flowering in short day length and long day length, avoiding stresses associated with high temperature and water deficit in grain filling stages. This study shows that the parents NE01533, Pelsart, Promontory and the 47 lines in F2 generation have the Ppd-D1a allele while Yellowstone and the remaining lines are photoperiod sensitive.Öğe N-terminal-pro brain natriuretic peptide levels in children with allergic rhinitis(TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2016) Artac, Hasibe; Vatansev, Husamettin; Cimen, Derya; Arslan, Derya; Kaya, Fatma; Kayis, Seyit Ali; Oran, BulentBackground/aim: Persistent upper airway obstruction may lead to increased pulmonary arterial pressure (PAP). The aim of this study was to evaluate N-terminal pro brain natriuretic peptide (NT-proBNP) concentrations and PAP values in children with allergic rhinitis. Materials and methods: Sixty-six patients with allergic rhinitis and 22 healthy children were prospectively enrolled in this study. Plasma NT-proBNP levels were measured at first admission and after treatment. Simultaneously, echocardiography was done to assess pulmonary arterial hypertension, and rhinitis symptom scores were recorded. Results: The median age of the study group was 9.0 (5.0. 17.0) years; 26 were female. PAP was found to be normal in all the patients. There was a negative correlation between age and NT-proBNP levels (r = -0.452, P < 0.01). Nasal blockage levels affected NT-proBNP levels mildly (P = 0.067). No significant difference between before and after nasal steroid treatment was observed in NT-proBNP levels. Conclusion: These results suggest that NT-proBNP level and PAP may not be affected in children with allergic rhinitis, and primarily this influence may be associated with the severity of nasal obstruction.Öğe Neuroprotective effects of sildenafil in experimental spinal cord injury in rabbits(ASSOC BASIC MEDICAL SCI FEDERATION BOSNIA & HERZEGOVINA SARAJEVO, 2015) Kara, Hasan; Degirmenci, Selim; Ak, Ahmet; Bayir, Aysegul; Kayis, Seyit Ali; Uyar, Mehmet; Akinci, MuratNeuroprotective agents such as methylprednisolone and sildenafil may limit damage after spinal cord injury. We evaluated the effects of methylprednisolone and sildenafil on biochemical and histologic changes after spinal cord injury in a rabbit model. Female New Zealand rabbits (32 rabbits) were allocated to 4 equal groups: laminectomy only (sham control) or laminectomy and spinal trauma with no other treatment (trauma control) or treatment with either methylprednisolone or sildenafil. Gelsolin and caspase-3 levels in cerebrospinal fluid and plasma were determined, and spinal cord histology was evaluated at 24 hours after trauma. There were no differences in mean cerebrospinal fluid or plasma levels of caspase-3 between the groups or within the groups from 0 to 24 hours after injury. From 0 to 24 hours after trauma, mean cerebrospinal fluid gelsolin levels significantly increased in the sildenafil group and decreased in the sham control and the trauma control groups. Mean plasma gelsolin level was significantly higher at 8 and 24 hours after trauma in the sildenafil than other groups. Histologic examination indicated that general structural integrity was better in the methylprednisolone in comparison with the trauma control group. General structural integrity, leptomeninges, white and grey matter hematomas, and necrosis were significantly improved in the sildenafil compared with the trauma control group. Caspase-3 levels in the cerebrospinal fluid and blood were not increased but gelsolin levels were decreased after spinal cord injury in trauma control rabbits. Sildenafil caused an increase in gelsolin levels and may be more effective than methylprednisolone at decreasing secondary damage to the spinal cord.Öğe Nonsurgical periodontal therapy with/without diode laser modulates metabolic control of type 2 diabetics with periodontitis: a randomized clinical trial(SPRINGER LONDON LTD, 2016) Kocak, Emrah; Saglam, Mehmet; Kayis, Seyit Ali; Dundar, Niyazi; Kebapcilar, Levent; Loos, Bruno G.; Hakki, Sema S.In order to evaluate whether nonsurgical periodontal treatment with/without diode laser (DL) decontamination improves clinical parameters, the levels of IL-1 beta, IL-6, IL-8, intercellular adhesion molecule (ICAM), and vascular cell adhesion molecule (VCAM) in gingival crevicular fluid and metabolic control (HbA1c) in chronic periodontitis (CP) patients with diabetes mellitus type 2 (DM2). Sixty patients with DM2 and CP were randomly assigned into two groups to receive scaling and root planing (SRP, n = 30) or SRP followed by diode laser application (SRP + DL, n = 30). Clinical periodontal and gingival crevicular fluid (GCF) parameters were assessed at baseline, 1, and 3 months after periodontal treatment. HbA1c levels were evaluated at baseline and 3 months post-therapy. Total amounts of cytokines and molecules were analyzed by ELISA. Nonsurgical periodontal treatment with/without DL appeared to improve clinical, biochemical parameters, and glycemic control in DM2 patients (BMI < 25 kg/m(2)) with CP. The SRP + DL group provided better reductions in probing depth (PD) and clinical attachment level (CAL) parameters compared to the SRP group (P < 0.05). Significant reductions were found in the total amounts of GCF levels of IL-1, IL-6, IL-8, ICAM, and VCAM after treatment (P < 0.05). HbA1c levels decreased significantly at 3 months after treatment (P < 0.05). SRP + DL reduced HbA1c levels more significantly compared to SRP alone (0.41 vs. 0.22 %, P < 0.05). SRP, especially in combination with DL, shows improvement of glycemic control for DM2 patients with CP.
