Analysis of Plant Growth and Biochemical Parameters in Amsonia orientalis after in vitro Salt Stress

Arda Acemi,Yonca Duman,Yonca Yüzügüllü Karakuş,Yasemin Özdener Kömpe,Fazıl Özen 한국원예학회 2017 Horticulture, Environment, and Biotechnology Vol.58 No.3

This study aimed to better understand the limited natural distribution of the endangered ornamental plantAmsonia orientalis Decne. by focusing on salt stress, a common limiting factor of plant growth. Plants weresubjected to in vitro salt stress at concentrations between 25 and 150 mM. In general, shoot and root lengths, rootnumber, and total protein, chlorophyll a and carotenoid content were negatively influenced at NaCl concentrationsabove 25 mM. Hydrogen peroxide, malondialdehyde and proline content all gradually increased with increasing saltconcentration. Activity levels of the antioxidant enzymes catalase (CAT), peroxidase (POD) and superoxide dismutase(SOD) were all at their maximum in plants cultured in medium containing 50 mM NaCl. Compared to controlcultures, an overall upward trend in POD activity was observed with increasing salt concentration, while the activitylevels of SOD and CAT increased at lower concentrations but were limited at elevated concentrations of NaCl. These results suggest that A. orientalis prefers soils with no or very low salt but can tolerate NaCl up to aconcentration of 50 mM.

Emotion Regulation as a Pathway Through Which Personality Affects Psychological Well-being: A Preliminary Study in Korea and the United States

Kim, Min Young,Tocker, Yonca Korean Society for Emotion and Sensibility 2014 감성과학 Vol.17 No.1

Emotion regulation has been suggested as a pathway through which personality traits (e.g., extraversion or neuroticism) affect psychological well-being. However, the pathway needs further investigation across cultures due to variations in parts of the relationship reported in recent culture research. With an aim of improving current understanding of the pathway, we investigated the role of emotion regulation mediating the link between personality traits and well-being across two college samples from different cultural backgrounds: Korea and the United States (US). Results of mediation analysis revealed that the extraversion-well-being relationship was fully mediated by the degree to which individuals regulate negative emotions in both Korean and US samples. However, the neuroticism-well-being relationship was partially mediated by emotion regulation in the US sample, while it was fully mediated in the Korean sample. The role of emotion regulation differently functioning across cultures suggests the importance of investigating cultural-specific mechanism of psychological processes.

Emotion Regulation as a Pathway Through Which Personality Affects Psychological Well-being: A Preliminary Study in Korea and the United States

( Min Young Kim ),( Yonca Toker ) 한국감성과학회 2014 감성과학 Vol.17 No.1

Emotion regulation has been suggested as a pathway through which personality traits (e.g., extraversion or neuroticism) affect psychological well-being. However, the pathway needs further investigation across cultures due to variations in parts of the relationship reported in recent culture research. With an aim of improving current understanding of the pathway, we investigated the role of emotion regulation mediating the link between personality traits and well-being across two college samples from different cultural backgrounds: Korea and the United States (US). Results of mediation analysis revealed that the extraversion-well-being relationship was fully mediated by the degree to which individuals regulate negative emotions in both Korean and US samples. However, the neuroticism-well-being relationship was partially mediated by emotion regulation in the US sample, while it was fully mediated in the Korean sample. The role of emotion regulation differently functioning across cultures suggests the importance of investigating cultural-specific mechanism of psychological processes.

The expressions of HSP70 and αB-crystallin in myocarditis associated with foot-and-mouth disease virus in lambs

Mustafa Yavuz Gulbahar,Yonca Betil Kabak,Mehmet Onder Karayigit,Murat Yarim,Tolga Guvenc,Unal Parlak 대한수의학회 2011 JOURNAL OF VETERINARY SCIENCE Vol.12 No.1

This study describes the expression of heat shock protein70 (HSP70) and alpha-basic-crystallin (α-BC) and their association with apoptosis and some related adaptor proteins in the pathogenesis of foot-and-mouth disease virus (FMDV)-induced myocarditis in lambs. HSP70 was generally overexpressed in the myocardial tissues and inflammatory cells of FMDV-induced myocarditis with differential accumulation and localization in same hearts when compared to non-foot-and-mouth disease control hearts. α-BC immunolabeling showed coarse aggregations in the Z line of the cardiomyocytes in FMDV-infected hearts in contrast to control hearts. Overall, the results of this study show that the anti-apoptotic proteins, HSP70 and α-BC, were overexpressed with increased apoptosis in FMDV-infected heart tissues. Both proteins failed to protect the cardiomyocytes from apoptosis as defense mechanisms to the FMDV during the infection, suggesting that the virus is able to increase apoptosis via both downregulation and/or upregulation of these anti-apoptotic proteins.

Mammary fibroadenoma in a lamb

M. Yavuz Gulbahar,Tolga Guvenc,Murat Yarim,Yonca B. Kabak,Yuksel Sozgen 대한수의학회 2007 Journal of Veterinary Science Vol.8 No.4

A fibroadenoma was diagnosed in the left udder of a 3-month-old female Chios lamb. No recurrence was observed after surgery. Grossly, the tumor had a whitishgray lobular appearance, and the lobules were interlaced with thin septa. Microscopically, the tumor was composed of proliferating fibroepithelial tissue, including differentiated ducts lined by whorls and interlacing bundles of abundant loose fibrovascular stroma. Immunohistochemistry revealed the ductal epithelium to be positive for pancytokeratin (AE1/AE3) and loose fibrovascular stroma was positive for vimentin and basal cells covering the ductal epithelium of alpha-smooth-muscle actin. Immunostaining for the estrogen and progesterone receptors was negative. A diagnosis of mammary fibroadenoma was made based on the histological and immunohistochemical findings.

Investigation of antimicrobial activity and entA and entB genes in Enterococcus faecium and Enterococcus faecalis strains isolated from naturally fermented Turkish white cheeses

Sine Özmen Toğay,Mustafa Ay,Onur Güneşer,Yonca Karagül Yüceer 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.6

In this research, the antagonistic effects of Enterococcus faecalis and E. faecium bacteria isolated from naturally fermented Turkish white cheeses, produced without starter culture, against Listeria monocytogenes, L. innocua, L. ivanovii, Staphylococcus aureus, and E. faecalis were evaluated. The presence of entA and entB genes was also detected in the isolates, which had antimicrobial activity. Total 71 strains of E. faecalis and 7 strains of E. faecium were tested; 20 of E. faecalis and none of E. faecium strains showed antimicrobial activity against the tested bacteria using agar spot method. Among E. faecalis strains, which had antimicrobial activity, three strains contained both entA and entB genes, two strains carried only entA gene, and five strains had only entB gene. These cheese-sourced enterococcal strains or their enterocins should be considered to be used for food preservation especially in the dairy industry.

Alpha basic crystallin expression in canine mammary tumors

Tolga Guvenc,Mustafa Yavuz Gulbahar,Murat Yarim,Yonca Betil Kabak,Onder Karayigit,Mahmut Sozmen 대한수의학회 2012 JOURNAL OF VETERINARY SCIENCE Vol.13 No.1

The aim of this study was to evaluate prognostic and/or diagnostic factors of canine mammary tumors by immunohistochemically analyzing the expression of alpha basic crystallin (aB-c). For this, formalin-fixed, paraffin-embedded blocks of 51 naturally-occurring canine mammary tumors (11 benign and 40 malignant) were used. Tissue from eight normal canine mammary glands were served as a control. Immunohistochemically, in the control mammary tissues, a few luminal epithelial cells were aB-c positive but myoepithelial cells were negative. In benign or simple type malignant tumors, aB-c expression was observed in luminal epithelial cells while the myoepithelial basal cells were negative. In benign or complex type malign tumors, positive staining was predominantly found in the cytoplasm of epithelial cells. Immunoreactivity of aB-c was also observed in neoplastic myoepithelial cells. Statistically, the number of cells immunolabeled with aB-c was found to be significantly different among tissues from normal canine mammary glands, benign lesions, and malignant tumors (p < 0.05). aB-c immunoreactivity was higher in malignant tumors than the control mammary tissues (p < 0.001). Data obtained in the current study revealed a strong association between high expression levels af aB-c and primary mammary gland tumors in canines.

Investigation of antimicrobial activity and entA and entB genes in Enterococcus faecium and Enterococcus faecalis strains isolated from naturally fermented Turkish white cheeses

Togay, Sine Ozmen,Ay, Mustafa,Guneser, Onur,Yuceer, Yonca Karagul 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.6

In this research, the antagonistic effects of Enterococcus faecalis and E. faecium bacteria isolated from naturally fermented Turkish white cheeses, produced without starter culture, against Listeria monocytogenes, L. innocua, L. ivanovii, Staphylococcus aureus, and E. faecalis were evaluated. The presence of entA and entB genes was also detected in the isolates, which had antimicrobial activity. Total 71 strains of E. faecalis and 7 strains of E. faecium were tested; 20 of E. faecalis and none of E. faecium strains showed antimicrobial activity against the tested bacteria using agar spot method. Among E. faecalis strains, which had antimicrobial activity, three strains contained both entA and entB genes, two strains carried only entA gene, and five strains had only entB gene. These cheese-sourced enterococcal strains or their enterocins should be considered to be used for food preservation especially in the dairy industry.