Objective: Nowadays, in most of industrial technology, especially biotechnological processes, use of enzymes is increasingly widespread. With respect to discovery of new enzymes, one of the most successful methods is isolation of microorganisms from natural habitats. Therefore, in this research, we aimed to isolate and characterize lipase producing yeasts and purify the extracellular lipase produced by a novel yeast strain Candida odintsovae TY42. Methods: The yeasts used in the study were isolated from olive oils and identified based on sequence analyses of ITS1-5.8S rRNA-ITS2 and D1/D2 domain of 26S rRNA. The optimal nutritional and physicochemical conditions were determined by investigating the effects of initial pH and temperature and different carbon sources on enzyme production in basal medium. The lipase was purified by ammonium sulfate and acetone precipitation and anion exchange chromatography. Results: Three lipase producing yeast isolates were obtained from olive oils produced in Aegean region. The sequencing of rRNA regions revealed that novel strains, TY17, TY42 and TY54 identified as Candida odintsovae. C. odintsovae TY42 showed higher lipase activity and therefore, the yeast was selected for further investigations. The maximum lipase production was achieved in a medium containing fish oil after 144 h of incubation. The lipase was purified 12.8 fold. The molecular weight of the purified lipase was estimated to be about 39 kDa. Conclusion: This paper is the first study representing lipase production by C. odintsovae.
{"title":"Production and partial purification of extracellular lipase produced by a novel yeast strain Candida odintsovae TY42","authors":"Cengiz Çorbacı, Funda Kartal, H. T. Yalcin","doi":"10.5505/TJB.2014.78557","DOIUrl":"https://doi.org/10.5505/TJB.2014.78557","url":null,"abstract":"Objective: Nowadays, in most of industrial technology, especially biotechnological processes, use of enzymes is increasingly widespread. With respect to discovery of new enzymes, one of the most successful methods is isolation of microorganisms from natural habitats. Therefore, in this research, we aimed to isolate and characterize lipase producing yeasts and purify the extracellular lipase produced by a novel yeast strain Candida odintsovae TY42. Methods: The yeasts used in the study were isolated from olive oils and identified based on sequence analyses of ITS1-5.8S rRNA-ITS2 and D1/D2 domain of 26S rRNA. The optimal nutritional and physicochemical conditions were determined by investigating the effects of initial pH and temperature and different carbon sources on enzyme production in basal medium. The lipase was purified by ammonium sulfate and acetone precipitation and anion exchange chromatography. Results: Three lipase producing yeast isolates were obtained from olive oils produced in Aegean region. The sequencing of rRNA regions revealed that novel strains, TY17, TY42 and TY54 identified as Candida odintsovae. C. odintsovae TY42 showed higher lipase activity and therefore, the yeast was selected for further investigations. The maximum lipase production was achieved in a medium containing fish oil after 144 h of incubation. The lipase was purified 12.8 fold. The molecular weight of the purified lipase was estimated to be about 39 kDa. Conclusion: This paper is the first study representing lipase production by C. odintsovae.","PeriodicalId":23355,"journal":{"name":"Turkish Journal of Biochemistry-turk Biyokimya Dergisi","volume":"47 1","pages":"351-356"},"PeriodicalIF":0.7,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81363989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aim: Glutathione S-transferases (GST) take roles under stress conditions by the conjugation of Glutathione (GSH) to electrophilic substrates to increase their solubility and facilitating further metabolic processing. This is one of the main pathways functioning in stress resistance and, for dought stress, there is not yet a study on Pinus brutia Ten. which is a very important forest tree of Turkey. Materials and Methods: The needles of 30 different individuals of Pinus brutia Ten. were collected three times in the season: at the begining, in the middle and at the end of summer (June-August). The total precipitation and the temperature of the region were surveyed during sampling period. The osmotic pressure values, total GST activities and the GSH pools of the needle samples were measured and statistically analysed. Results: The osmotic pressure values showed 16% increase throughout the season. Moreover, total precipitation and temperature values demonstrated that the highest drought stress was observed at the end of sampling period. Approximately 80% of increase in total GST activity between the beginning and the end of summer probably indicated the response against drought; although there was no significant change in the GSH pool. Conclusion: The presence of drought, elevated osmotic pressure and a satistically significant (p<0.005) increase in total GST activities in needle samples were detected. The lack of direct correlation between the GSH pool and total GST activities was explained by the rate of GSH biosynthesis and its redox cycling.
{"title":"Glutathione S-Transferase activities and glutathione levels in needles of drought stressed Pinus brutia Ten. trees","authors":"C. Yılmaz, M. Işcan","doi":"10.5505/TJB.2014.88319","DOIUrl":"https://doi.org/10.5505/TJB.2014.88319","url":null,"abstract":"Aim: Glutathione S-transferases (GST) take roles under stress conditions by the conjugation of Glutathione (GSH) to electrophilic substrates to increase their solubility and facilitating further metabolic processing. This is one of the main pathways functioning in stress resistance and, for dought stress, there is not yet a study on Pinus brutia Ten. which is a very important forest tree of Turkey. Materials and Methods: The needles of 30 different individuals of Pinus brutia Ten. were collected three times in the season: at the begining, in the middle and at the end of summer (June-August). The total precipitation and the temperature of the region were surveyed during sampling period. The osmotic pressure values, total GST activities and the GSH pools of the needle samples were measured and statistically analysed. Results: The osmotic pressure values showed 16% increase throughout the season. Moreover, total precipitation and temperature values demonstrated that the highest drought stress was observed at the end of sampling period. Approximately 80% of increase in total GST activity between the beginning and the end of summer probably indicated the response against drought; although there was no significant change in the GSH pool. Conclusion: The presence of drought, elevated osmotic pressure and a satistically significant (p<0.005) increase in total GST activities in needle samples were detected. The lack of direct correlation between the GSH pool and total GST activities was explained by the rate of GSH biosynthesis and its redox cycling.","PeriodicalId":23355,"journal":{"name":"Turkish Journal of Biochemistry-turk Biyokimya Dergisi","volume":"124 1","pages":"238-243"},"PeriodicalIF":0.7,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87863900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
O. Alatas, A. Akalin, G. Çiftçi, G. Yorulmaz, Ipek Ertorun, N. Kebapçı, B. Efe
Objective: Obesity and age related vascular changes coupled with the effect of estrogen with- drawal increases predisposition to atherosclerosis in postmenopausal women. But the func- tions of high density lipoprotein (HDL) were not well established in postmenopausal women. In the present study, we mainly aimed to evaluate the changes in the functions of HDL and aimed to measure, lipid peroxidation, lipid profile and homocysteine levels as a supporting evidence in pre and postmenopausal obese women as a result of estrogen depletion. Material and Methods: This study included 20 premenopausal, 22 postmenopausal 42 obese (BMI>30 kg/m2) and 26 premenopausal non-obese. These twenty six premenopausal women with normal BMI (20
{"title":"Oxidative and inflammatory status and HDL functions of obese pre and post menopausal women","authors":"O. Alatas, A. Akalin, G. Çiftçi, G. Yorulmaz, Ipek Ertorun, N. Kebapçı, B. Efe","doi":"10.5505/TJB.2014.82787","DOIUrl":"https://doi.org/10.5505/TJB.2014.82787","url":null,"abstract":"Objective: Obesity and age related vascular changes coupled with the effect of estrogen with- drawal increases predisposition to atherosclerosis in postmenopausal women. But the func- tions of high density lipoprotein (HDL) were not well established in postmenopausal women. In the present study, we mainly aimed to evaluate the changes in the functions of HDL and aimed to measure, lipid peroxidation, lipid profile and homocysteine levels as a supporting evidence in pre and postmenopausal obese women as a result of estrogen depletion. Material and Methods: This study included 20 premenopausal, 22 postmenopausal 42 obese (BMI>30 kg/m2) and 26 premenopausal non-obese. These twenty six premenopausal women with normal BMI (20<BMI<25 kg/m2) were recruited to serve as the control group. Markers of cardiovascular disease (CVD), namely high sensitive C-reactive protein (hsCRP), homocysteine and lipoprotein(a) (Lp(a)) were measured. Glucose, lipid parameters and Malo- ndialdehyde (MDA), antiinflammatory HDL levels were also measured. Functional proper- ties of HDL were determined by the change in fluorescence intensity resulting from oxida- tion of DCFH (Dichloroflorescein) by LDL in the presence of patient HDL in cell free serum. Results: Lipid profiles were impaired in both pre and postmenopausal obese women. CVD markers and glucose levels increased in post menopausal women. But hsCRP levels were also increased in premenopausal compared to control group. MDA, the product of lipid peroxida- tion was increased in both pre and postmenopausal women. Antiinflammatory characteris- tics of HDL were only impaired in postmenopausal women. Conclusion: Postmenopausal obese women have lost their antiinflammatory HDL functions. This situation can be a significant indicator of endothelial dysfunction and cardiovascular disease in postmenopausal women. But the increase in oxidative stress was observed in all of the obese patients regardless of estrogen withdrawal.","PeriodicalId":23355,"journal":{"name":"Turkish Journal of Biochemistry-turk Biyokimya Dergisi","volume":"688 1","pages":"162-168"},"PeriodicalIF":0.7,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75815254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Objective: Quality planning in a laboratory can be defined as designing quality wanted or required for a test. The objective of a suitable choice is to determine the most efficient quality control rules and the number of control measurements. The aim of this study is to evaluate the features of the tools of quality planing while choosing quality control procedure. Methods: In this study, the tools of quality planing used to choose quality control procedure were operated for the data generated by simulation. These tools were created for both clinical decision interval and total analytical error model. EZ Rules 3.0 programme was used to obtain OPSpecs chart and critical error chart for both models. Results: In critical error chart, in clinical decision interval model, N=4, R=1 as control procedures, probability of detecting error is over 90% and probability of refusing wrong is less than 5%, in total analytical error model, probability of error detecting is almost 100%, probability of refusing wrong is less than 5%. Procedures applicable to total analytical error model and clinical decision interval model of OPSspecs model are N=4 and R=1. Conclusion: As a result, the number of control measurements required based on random and systematic error observed in the measurement procedure, and the above mentioned approaches, which facilite selecting control rules are important for quality control evaluations in clinical chemistry laboratories. In addition they are difficult to comment and to obtain without software.
{"title":"The importance of quality planning tools in clinical chemistry laboratory","authors":"L. Tomak","doi":"10.5505/TJB.2015.80488","DOIUrl":"https://doi.org/10.5505/TJB.2015.80488","url":null,"abstract":"Objective: Quality planning in a laboratory can be defined as designing quality wanted or required for a test. The objective of a suitable choice is to determine the most efficient quality control rules and the number of control measurements. The aim of this study is to evaluate the features of the tools of quality planing while choosing quality control procedure. Methods: In this study, the tools of quality planing used to choose quality control procedure were operated for the data generated by simulation. These tools were created for both clinical decision interval and total analytical error model. EZ Rules 3.0 programme was used to obtain OPSpecs chart and critical error chart for both models. Results: In critical error chart, in clinical decision interval model, N=4, R=1 as control procedures, probability of detecting error is over 90% and probability of refusing wrong is less than 5%, in total analytical error model, probability of error detecting is almost 100%, probability of refusing wrong is less than 5%. Procedures applicable to total analytical error model and clinical decision interval model of OPSspecs model are N=4 and R=1. Conclusion: As a result, the number of control measurements required based on random and systematic error observed in the measurement procedure, and the above mentioned approaches, which facilite selecting control rules are important for quality control evaluations in clinical chemistry laboratories. In addition they are difficult to comment and to obtain without software.","PeriodicalId":23355,"journal":{"name":"Turkish Journal of Biochemistry-turk Biyokimya Dergisi","volume":"54 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84803599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Gedikli, Yeliz Buruk, E. Apohan, A. Çabuk, O. Yesilada, N. Burnak
Objective: The aim of this study was to investigate the laccase production of Trametes versicolor under submerged fermentation condition. Then, dye decolorization by laccase was optimized using Box-Behnken methodology. Methods: The optimal culture conditions for producing high amount of laccase were determined using Taguchi methodology. The experiments were designed with five factors (glucose, yeast extract, CuSO 4 , inoculum size and pH) at three levels with orthogonal array layout of L27 (3 5 ). Then, the optimum conditions for high decolorization activity of Reactive Blue 49 by obtained crude laccase were also investigated using Box-Behnken methodology. Results: The optimum culture conditions for production of high amounts of laccase were detected as 2 g L -1 of glucose, 5 g L -1
目的:研究色曲霉在深层发酵条件下漆酶的产生。然后，采用Box-Behnken法优化漆酶对染料的脱色效果。方法:采用田口法确定高产漆酶的最佳培养条件。试验采用L27(35)正交设计，以葡萄糖、酵母浸膏、cuso4、接种量和pH为5个因素，进行3个水平的试验设计。然后，采用Box-Behnken方法对活性蓝49粗漆酶高脱色活性的最佳条件进行了研究。结果:葡萄糖用量为2 g L -1，葡萄糖用量为5 g L -1，是产生大量漆酶的最佳培养条件
{"title":"Laccase production and dye decolorization by Trametes versicolor: application of Taguchi and Box-Behnken Methodologies","authors":"S. Gedikli, Yeliz Buruk, E. Apohan, A. Çabuk, O. Yesilada, N. Burnak","doi":"10.5505/TJB.2014.62533","DOIUrl":"https://doi.org/10.5505/TJB.2014.62533","url":null,"abstract":"Objective: The aim of this study was to investigate the laccase production of Trametes versicolor under submerged fermentation condition. Then, dye decolorization by laccase was optimized using Box-Behnken methodology. Methods: The optimal culture conditions for producing high amount of laccase were determined using Taguchi methodology. The experiments were designed with five factors (glucose, yeast extract, CuSO 4 , inoculum size and pH) at three levels with orthogonal array layout of L27 (3 5 ). Then, the optimum conditions for high decolorization activity of Reactive Blue 49 by obtained crude laccase were also investigated using Box-Behnken methodology. Results: The optimum culture conditions for production of high amounts of laccase were detected as 2 g L -1 of glucose, 5 g L -1","PeriodicalId":23355,"journal":{"name":"Turkish Journal of Biochemistry-turk Biyokimya Dergisi","volume":"33 1","pages":"298-306"},"PeriodicalIF":0.7,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88529338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Kozaci, F. Gungor, M. Ay, I. Beydilli, Nuri Bozdemir, C. Akyol
Objective: The increase in alveolar ventilation causes disposal of large amounts of carbon dioxide from the respiratory system resulting in hypocapnia and respiratory alkalosis. Hypocapnia reduces cerebral blood flow, alkalosis leads to a leftward shift in oxygen- hemoglobin dissociation curve causing reduced oxygen delivery to tissues. Therefore, immediate diagnosis and close monitoring of respiratory alkalosis is necessary in emergency situations. In this study, the comparison of arterial and venous blood gas parameters of patients with respiratory alkalosis, and the evaluation of the usability of venous blood gas instead of arterial blood gas in patients with respiratory alkalosis were aimed. Methods: Ninety patients with respiratory alkalosis were enrolled in this study prospectively. Arterial and venous blood gas samples of patients enrolled in the study were drawn simultaneously in room air without administering any treatment after admitting to the emergency department. Results: The correlation between the results of pH, partial pressure of carbon dioxide (pCO2), bicarbonate (HCO 3 ) and base excess (BE) (respectively, r= 0.764, r= 0.839, r= 0.843, r= 0.883) in arterial and venous blood gas samples were statistically significant (p 80 mmHg in 23 patients (25.6%), between 60-80 mmHg in 29 (32.2%) patients and <60 mmHg in 38 (42.2%) patients. A statistically significant correlation (r= 0.540, p<0.001) detected only between arterial and venous blood gas samples of patients with PaO 2 <60mmHg and O 2 saturation <90% among these three groups. Conclusion: In the follow-up of patients with respiratory alkalosis, if O2 saturation is ≥90%; pH, pCO 2 and HCO 3 of venous blood gas samples can be used instead of arterial blood gas samples. If patient's O2 saturation <90%; pH, pCO2, HCO3 and also pO2 values in venous blood gas sample can be used instead of arterial blood gas samples.
{"title":"Can venous blood gas values be used instead of arterial blood gas values in respiratory alkalosis","authors":"N. Kozaci, F. Gungor, M. Ay, I. Beydilli, Nuri Bozdemir, C. Akyol","doi":"10.5505/TJB.2014.87049","DOIUrl":"https://doi.org/10.5505/TJB.2014.87049","url":null,"abstract":"Objective: The increase in alveolar ventilation causes disposal of large amounts of carbon dioxide from the respiratory system resulting in hypocapnia and respiratory alkalosis. Hypocapnia reduces cerebral blood flow, alkalosis leads to a leftward shift in oxygen- hemoglobin dissociation curve causing reduced oxygen delivery to tissues. Therefore, immediate diagnosis and close monitoring of respiratory alkalosis is necessary in emergency situations. In this study, the comparison of arterial and venous blood gas parameters of patients with respiratory alkalosis, and the evaluation of the usability of venous blood gas instead of arterial blood gas in patients with respiratory alkalosis were aimed. Methods: Ninety patients with respiratory alkalosis were enrolled in this study prospectively. Arterial and venous blood gas samples of patients enrolled in the study were drawn simultaneously in room air without administering any treatment after admitting to the emergency department. Results: The correlation between the results of pH, partial pressure of carbon dioxide (pCO2), bicarbonate (HCO 3 ) and base excess (BE) (respectively, r= 0.764, r= 0.839, r= 0.843, r= 0.883) in arterial and venous blood gas samples were statistically significant (p 80 mmHg in 23 patients (25.6%), between 60-80 mmHg in 29 (32.2%) patients and <60 mmHg in 38 (42.2%) patients. A statistically significant correlation (r= 0.540, p<0.001) detected only between arterial and venous blood gas samples of patients with PaO 2 <60mmHg and O 2 saturation <90% among these three groups. Conclusion: In the follow-up of patients with respiratory alkalosis, if O2 saturation is ≥90%; pH, pCO 2 and HCO 3 of venous blood gas samples can be used instead of arterial blood gas samples. If patient's O2 saturation <90%; pH, pCO2, HCO3 and also pO2 values in venous blood gas sample can be used instead of arterial blood gas samples.","PeriodicalId":23355,"journal":{"name":"Turkish Journal of Biochemistry-turk Biyokimya Dergisi","volume":"T153 1","pages":"113-118"},"PeriodicalIF":0.7,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82638555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aim: The objectives of this study are, first, to investigate a star network analysis of phylogenetic trees of identified Y. lipolytica strains with or without one out-group, and secondly, to show the redundancy of the out-groups in phylogenetic tree. Material and Methods: In this study we used 22 Yarrowia lipolytica strains which were identified with sequencing of D1/D2 domain of 26S rDNA region, two phylogenetic trees were reconstructed by the neighbor joining method including an out-group or not. The star- like weighted network analysis of these two phylogenetic trees was investigated. Results: The adjacency matrix formalism of our weighted phylogenetic network with the out- group looks like a directed star graph adjacency matrix. The lowest weight is the edge from the central node to Candida sake out-group (0.00008) corresponding to the narrowest edge. However, the edge going from central node to Yarrowia lipolytica TEM YL 19 has a weight of 0.0825 and the thickest structure. Conclusion: Thus network analysis show that phylogenetic relationship between close strain and subspecies can be confirmed and also the out-group in this phylogenetic tree is unnecessary due to the negligible change in the average weighted degree and its some
{"title":"Star network analysis of sequence based identified Yarrowia lipolytica strains","authors":"O. Akpınar, Emir Haliki, F. Uçar, A. H. Uztan","doi":"10.5505/TJB.2014.75768","DOIUrl":"https://doi.org/10.5505/TJB.2014.75768","url":null,"abstract":"Aim: The objectives of this study are, first, to investigate a star network analysis of phylogenetic trees of identified Y. lipolytica strains with or without one out-group, and secondly, to show the redundancy of the out-groups in phylogenetic tree. Material and Methods: In this study we used 22 Yarrowia lipolytica strains which were identified with sequencing of D1/D2 domain of 26S rDNA region, two phylogenetic trees were reconstructed by the neighbor joining method including an out-group or not. The star- like weighted network analysis of these two phylogenetic trees was investigated. Results: The adjacency matrix formalism of our weighted phylogenetic network with the out- group looks like a directed star graph adjacency matrix. The lowest weight is the edge from the central node to Candida sake out-group (0.00008) corresponding to the narrowest edge. However, the edge going from central node to Yarrowia lipolytica TEM YL 19 has a weight of 0.0825 and the thickest structure. Conclusion: Thus network analysis show that phylogenetic relationship between close strain and subspecies can be confirmed and also the out-group in this phylogenetic tree is unnecessary due to the negligible change in the average weighted degree and its some","PeriodicalId":23355,"journal":{"name":"Turkish Journal of Biochemistry-turk Biyokimya Dergisi","volume":"1 1","pages":"78-86"},"PeriodicalIF":0.7,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82825385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The effect of alpha lipoic acid on hydrogen peroxide-induced lipid peroxidation in rat liver homogenates","authors":"S. B. Yapar, S. Eskiocak","doi":"10.5505/TJB.2014.71501","DOIUrl":"https://doi.org/10.5505/TJB.2014.71501","url":null,"abstract":"","PeriodicalId":23355,"journal":{"name":"Turkish Journal of Biochemistry-turk Biyokimya Dergisi","volume":"63 1","pages":"317-327"},"PeriodicalIF":0.7,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81369379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Aim: HSP90, one of the most important and multifunctional stress proteins in cells, plays important role in cell self-protection and environmental adaptability in crustacean. Our pre- vious study showed that application of imidazole derivative KK-42 can increase survival rate of Penaeus vannumei. In an attempt to research the possible molecular mechanism of KK-42 increasing survival rate in P. vannumei, one HSP90 cDNA sequence from the hepatopancreas was first isolated and then its spatiotemporal expressions were analyzed. Material and Methods: The HSP90 was cloned from the hepatopancreas of P. vannumei using the rapid amplification of cDNAends methods and its sequence was analyzed with biological software. Expression level was determined by real-time PCR. Results: The full-length cDNA contains a 2163 bp open reading frame encoding a predicted protein of 721 amino acids. The P. vannumei HSP90 protein sequence is most closely related to other HSP90 enzymes, the higher mRNA level is detected in hepatopancreas. The hepato- pancreas HSP90 expression is significantly induced by KK-42 and increases more than 69.1 %, even up to 505.5 % and 481.7 % on day 2 and day 3, respectively. Conclusion: The up-regulation of HSP90 expression induced by KK-42 is beneficial to imp- rove adaptability that is likely one of the molecular mechanisms of KK-42 increasing survival
{"title":"A partial genomic characterization and up-regulation of HSP90 by imidazole derivative KK-42 in the shrimp Penaeus vannumei","authors":"X. Xi-chao, W. Wenfeng, Yang Hong, Ning Qianji","doi":"10.5505/TJB.2014.43265","DOIUrl":"https://doi.org/10.5505/TJB.2014.43265","url":null,"abstract":"Aim: HSP90, one of the most important and multifunctional stress proteins in cells, plays important role in cell self-protection and environmental adaptability in crustacean. Our pre- vious study showed that application of imidazole derivative KK-42 can increase survival rate of Penaeus vannumei. In an attempt to research the possible molecular mechanism of KK-42 increasing survival rate in P. vannumei, one HSP90 cDNA sequence from the hepatopancreas was first isolated and then its spatiotemporal expressions were analyzed. Material and Methods: The HSP90 was cloned from the hepatopancreas of P. vannumei using the rapid amplification of cDNAends methods and its sequence was analyzed with biological software. Expression level was determined by real-time PCR. Results: The full-length cDNA contains a 2163 bp open reading frame encoding a predicted protein of 721 amino acids. The P. vannumei HSP90 protein sequence is most closely related to other HSP90 enzymes, the higher mRNA level is detected in hepatopancreas. The hepato- pancreas HSP90 expression is significantly induced by KK-42 and increases more than 69.1 %, even up to 505.5 % and 481.7 % on day 2 and day 3, respectively. Conclusion: The up-regulation of HSP90 expression induced by KK-42 is beneficial to imp- rove adaptability that is likely one of the molecular mechanisms of KK-42 increasing survival","PeriodicalId":23355,"journal":{"name":"Turkish Journal of Biochemistry-turk Biyokimya Dergisi","volume":"96 1","pages":"155-161"},"PeriodicalIF":0.7,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91181426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Razavi, Z. Nourouzi, Alireza Ghasemiian, A. Ghorbani, Saeedeh Latifi
Objective: The genus Artemisia (Asteraceae) comprises approximately 400 species of commonly perennial and fragrant herbs distributed in the northern temperate region of the world. Artemisia austriaca JACQ. is one of the most common species of the genus distributed from central Europe to Siberia, Turkey, and Iran. In Iran, the plant is indigenous to East Azerbaijan and Ardabil province. In the present study, the essential oil composition of the aerial part of Artemisia austriaca and some allelopathic potential of the oil were studied. Methods: The essential oil of the plant was obtained by hydrodistillation using a clevenger type apparatus. After dehydratation, the essential oil was analyzed by GC and GC-MS. Results: The results showed that the camphor (15.88%), 1,8-cineole (10.75%), camphene (3.53%) and beta-fenchyl alcohol (3.03%) were the main components among 51 constituents characterized in the oil. The plant essential oil showed significant anti-sclerotinia and phytotoxic activity. Conclusion: Our findings indicated that there is a high level similarity between the major compound of essential oil of A. austriaca samples collected from northwest of Iran, Ardabil, and Turkey. Accordingly, the two samples may represent the same chemotype. On the other
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