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ASSOCIATION OF FETUIN-A WITH GLUCOSE-6-PHOSPHATE DEHYDROGENASE AND OXIDATIVE STRESS IN SICKLE CELL ANEMIA
(Carbone Editore, 2016) Ulutas, Kemal Turker; Buyukbas, Sadik; Yilmaz, Nigar; Arpaci, Abdullah; Kaya, Hasan
Aim: Oxidative stress has crucial effects over vascular pathophysiology of Sickle Cell Anemia (SCA), and contributes atherosclerosis at advanced stages of the disease. In contrast to be acknowledged the possible role of Fetuin-A in the development of atherosclerosis, its association with vascular changes in SCA appears to warrant further investigation. In the study, we aimed to illuminate vascular pathophysiology of SCA via investigating Fetuin-A levels and its relationship with oxidative stress parameters. Material and methods: Fourty SCA patients and and 35 healthy individuals (n: 35) were included in the study all. After analyzing hematological data, Malondialdehyde (MDA), Glutathione Peroxidase (GSH-Px), Superoxide Dismutase (SOD) and Catalase (CAT) were measured throughout preparing hemolysate from samples with EDTA. Fetuin-A was analyzed from serum samples. Results: Fetuin-A (p<0.001) and MDA levels (p<0.001) were measured significantly higher in SCA group. Similarly, G6PD (p<0.001) and SOD (p<0.01) enzyme activities were determined higher in SCA when compared to the control group. A novel positive correlation was found among Fetuin-A, G6PD (r=0.435, p<0.0001) and MDA (r=0.547, p<0.0001). However, there was no statistical significance between the groups for CAT and GSH-Px. ROC analyze suggested 0,97 ng/mL as the cutoff value for Fetuin-A (Area Under the Curve: 0.713, sensitivity: 62%, specificity: 80%, p:0,002) and 0,06 mu mol/gr Hb as the cutoff value for MDA (Area Under the Curve: 0.898, sensitivity: 87 %, specificity: 80%, p:<0,001). Conclusion: Elevated Fetuin-A in patients with SCA and its positive correlations with both MDA and G6PD suggested that Fetuin-A might have an important role for pathophysiology of SCA. Additionally, Fetuin-A may be useful for evaluating severity of disease with high specificity cutoff value as MDA.
Comparative study of the volume of the temporal lobe sections and neuropeptide effect in Alzheimer's patients and healthy persons
(Taylor & Francis Ltd, 2021) Petekkaya, Emine; Burakgazi, Gulen; Kus, Berna; Melek, Ismet Murat; Arpaci, Abdullah
Aim The aim of this study was to make a volumetric comparison of some medial temporal lobe structures and neuropeptides between the patients of Alzheimer's disease (AD) and healthy individuals. Method The study comprised of a group of patients diagnosed with mild AD (n:15) and a Control group (n:15) (16 females, 14 males, mean age:72.90 +/- 4.50). Voxel-based morphometry and MRICloud analyses were performed on the MR images taken in 3D measurements of gray matter volumes of all subjects. Following a 10-minute hug test, blood samples were taken from all participants for oxytocin (OT) and arginine vasopressin (AVP) analyses. Results The patient group had a statistically lower right hippocampus volume (p = 0.004) and OT values (p = 0.028) than the Control group. OT signal values increased with a volume increase in the right parahippocampal gyrus (PHG_R), and OT conc. and AVP conc. values increased with increasing volume of the PHG_R. Conclusion It is suggested that the right hippocampus, right fusiform gyrus, left amygdala, left parahippocampal gyrus, and left entorhinal cortex atrophies can be used as predictors in the early diagnosis of AD. The positive correlation between PHG_R and neuropeptides showed the need to investigate the PHG and OT function more deeply.
The comparison of changes in fecal and mucosal microbiome in metabolic endotoxemia induced by a high-fat diet
(Elsevier Sci Ltd, 2022) Sagkan-Ozturk, Aliye; Arpaci, Abdullah
The aim of this study was to compare the mucosal and fecal microbiota in a high fat diet-induced metabolic endotoxemia (ME) model and to identify potential species that represent dysbiosis and might mediate the inflammatory process. Fourteen male wistar albino rats were fed a standard diet (n = 7) and a high-fat diet (HFD) (n = 7). The standard diet (2600 kcal/kg) contained 3% of energy from fat and HFD (6740 kcal/kg) contained 67% beef tallow. After feeding for 12 weeks, all rats were sacrificed after fasting for 12 h and blood samples were collected. Fresh faecal samples and descending colon samples of rats were collected in sterile plastic tubes using a clean technique, immediately snap-frozen in liquid nitrogen, and then stored at -80 degrees C until used for analysis. Serum glucose, TRG, TLR4, LPS, and fecal LPS increased in the HFD group. On the contrary, HDL was higher and statistically significant in the CD group. The levels of IL-6 and TNF-alpha in the colon tissue of the HFD group were significant. The HFD group caused a significant increase in LPS levels in serum and feces. In addition, the gut and mucosal microbiome were positively/negatively correlated with the ME markers (IL-6, TNF alpha LPS). The results showed that gut and mucosal microbiome changes were associated with HFD. These changes were dense at species levels. The current study demonstrated changes in gut and mucosal microbiota in HFD-induced metabolic endotoxemia. (c) 2022 Elsevier Ltd. All rights reserved.
Comparison of Platelet Distribution Width and CA19-9 in Resectable Pancreas Cancer
(2018) Ulutas, Kemal Turker; Sarici, Inanc Samil; Arpaci, Abdullah
Background: Platelets are considered an important source of prothrombotic agents associated with inflammation in cancer related diseases. We aimed to compare the diagnostic accuracy of the platelet distribution width (PDW) and CA19-9 in resectable pancreas cancer. Method: A total of 83 stage-1 and 2 pancreatic adenocarcinoma (PAC) patients, and 85 age and sex-matched healthy participants were included in the study. All preoperative patient data, including PDW and CA19-9 were analyzed in terms of sensitivity, specificity, positive and negative predictive values, likelihood ratios, and diagnostic accuracy. Results: Demographic features were not significantly different among the groups. Platelet distribution width and CA19-9 were significantly higher in PAC compared to control group (p= 0.0001). Diagnostically, the sensitivity and specificity were 79% and 85% for PDW, while 78% and 91% for CA19-9. Diagnostic accuracy was measured by the area under the ROC curve, and PDW differs significantly (p<0.001), with a value of 0.874 (95% CI: 0.804-0.929). Conclusion: Platelet distribution width indicated similar sensitivity and specificity with CA19-9 in patients with resectable PAC. This result strongly advice that PDW, which has more routine option and cost-effectivity than CA19-9, can be used for diagnosis of resectable PAC as a strong alternative.
Designing and validating an autoverification system of biochemical test results in Hatay Mustafa Kemal University, clinical laboratory
(Croatian Soc Medical Biochemistry & Laboratory Medicine, 2022) Gul, Bahar Unlu; Ozcan, Oguzhan; Dogan, Serdar; Arpaci, Abdullah
Introduction: Autoverification (AV) is a postanalytical tool that uses algorithms to validate test results according to specified criteria. The Clinical and Laboratory Standard Institute (CLSI) document for AV of clinical laboratory test result (AUTO-10A) includes recommendations for laboratories needing guidance on implementation of AV algorithms. The aim was to design and validate the AV algorithm for biochemical tests. Materials and methods: Criteria were defined according to AUTO-10A. Three different approaches for algorithm were used as result limit checks, which are reference range, reference range +/- total allowable error, and 2nd and 98th percentile values. To validate the algorithm, 720 cases in middleware were tested. For actual cases, 3,188,095 results and 194,520 reports in laboratory information system (LIS) were evaluated using the AV system. Cohen's kappa (kappa) was calculated to determine the degree of agreement between seven independent reviewers and the AV system. Results: The AV passing rate was found between 77% and 85%. The highest rates of AV were in alanine transaminase (ALT), direct bilirubin (DBIL), and magnesium (Mg), which all had AV rates exceeding 85%. The most common reason for non-validated results was the result limit check (41%). A total of 328 reports evaluated by reviewers were compared to AV system. The statistical analysis resulted in a kappa value between 0.39 and 0.63 (P < 0.001) and an agreement rate between 79% and 88%. Conclusions: Our improved model can help laboratories design, build, and validate AV systems and be used as starting point for different test gro-ups.
Effect of silibinin on the hyperlipidemia in rats fed with high cholesterol diet
(Cukurova Univ, Fac Medicine, 2021) Duman, Didem; Arpaci, Abdullah; Dirican, Emre; Bozdogan, Server; Bayraktar, Hamdullah Suphi
Purpose: Despite current hypolipidemic drugs, the search for a more effective hypolipidemic agent is ongoing. In this study, it was aimed to investigate the effect of Silibinin on hyperlipidemia in rats fed high cholesterol diet (HCD). Materials and Methods: Rats were made obese. Rats were given egg yolk for 60 days and then 50 mg/kg, 100 mg/kg Silibinin were applied i.p. for 7 days. Results: The first and last weights of the rats were significantly different. While total cholesterol (TC), LDL, TG and VLDL levels increased significantly in the groups fed with HCD, HDL level reduced compared to control group (CG). OxLDL and TAS were significantly different between groups. Conclusion: The effects of Silibinin on serum LDL, TC, VLDL, HDL, TG, OxLDL levels and to observe the antioxidant effect, TAS and TOS were investigated in experimental obese rat models. It was concluded that Silibinin plays an effective role in lowering TG and LDL levels, increasing HDL levels and decreasing hepatic lipid accumulation in HCD rats at 100 mg/kg dose. The use of Silibinin does not cause antihyperlipidemic effect but has antioxidant effect.
Effects of Interactions among Gene Polymorphisms of the Renin-Angiotensin-Aldosterone System on Hypertension in Turkish People from Southeast Anatolia
(Sciendo, 2019) Arpaci, Abdullah; Urhan-Kucuk, Meral; Bayramoglu, Aysegul; Guler, Halil Ibrahim; Ecevit, Hasret; Suner, Arif; Karakas-Celik, Sevim
Introduction: Hypertension (HT) is characterized by high blood pressure. The reninangiotensin-aldosterone system (RAAS) plays a crucial role in blood pressure (BP) regulation by maintaining vascular tone and the water-sodium balance. We aimed to investigate whether there is any relation between AGT (M235T), ACE (I/D), and AGTR1 (A1166C) genetic polymorphisms and hypertension among Turkish people from Southeast Anatolia. Method and Results: A total of 210 individuals, consisting of 102 healthy controls and 108 patients with essential hypertension admitted to the Cardiology Department of the Adiyaman University Research and Application Hospital were included the study. DNA isolation was performed from the blood samples via commercial kit. Genotype determination was determined using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. Statistically significant differences were found between the control and patient groups in terms of genotype distribution and allelic frequencies of ACE I/D polymorphisms. Significant differences were found in the frequencies of ICM, DCM, DCT, DAT between the patient and control groups. Conclusions: In this study, we found a significant association of ACE I/D polymorphism with HT, and we showed that the I allele can increase the risk of HT in Turkish people from Southeast Anatolia. Although we did not find any association between independent AGT M235T and AGT1R A1166C polymorphisms and HT, we observed that the DCM, DCT, and DAT haplotypes of ACE/AGT1R/AGT polymorphisms reduced the risk of hypertension, while the ICM haplotype increased it.
Enzyme activity and genetic polymorphisms in patients with type II diabetes mellitus
(Wroclaw Medical Univ, 2020) Arpaci, Abdullah; Yalin, Serap; Ecevit, Hasret; Comelekoglu, Ulku; Mete, Turkan
Background. Diabetes mellitus (DM) has become more and more common and has a high morbidity and mortality rate worldwide. It is a multifactorial chronic disease affected by both genetic and environmental factors. Objectives. To evaluate the association between antioxidant enzyme activities and their genetic variations and the level of malondialdehyde (MDA) in type II diabetes patients living in the Adlyaman province in the southeast part of Turkey. Material and methods. One hundred patients diagnosed with type II DM (T2DM) and 100 healthy controls were included in the study. Malondialdehyde levels and antioxidant enzyme activities were measured spectrophometrically. DNA isolation was performed and genotyping was carried out using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results. Our results revealed no significant differences in genotype distributions and allele frequencies of all polymorphisms between groups (p > 0.05). Significantly elevated MDA levels and a significant reduction in catalase (CAT) and paraoxonase (PON) enzyme activities were observed in patients compared to the control group in terms of study groups and genetic variations (p < 0.05). Moreover, CAT activity was reduced in TT genotype in terms of CAT -262 C/T polymorphism in patients (p < 0.05). Paraoxonase activity was observed to be lower in MM genotype in both groups (p < 0.05). Conclusions. CAT-262 C/T polymorphism may be one of the factors that lead to severe clinical situation in DM. Our results suggest that TT genotype may be more prone to lipid peroxidation.
Genetic variations of renin-angiotensin and fibrinolytic systems and susceptibility to coronary artery disease: a population genetics perspective
(Edizioni Minerva Medica, 2022) Bayramoglu, Aysegul; Bayramoglu, Gokhan; Urhan Kucuk, Meral; Guler, Halil, I; Arpaci, Abdullah
BACKGROUND: Genetic predisposition is an important risk factor in coronary artery disease (CAD).This study was conducted to determine the polymorphism frequencies of the plasminogen activator inhibitor-1(PAI-1) gene 4G/5G, angiotensin-converting enzyme (ACE) gene I/D, and angiotensin II type 1 receptor (AT1) gene A1166C genotypes and to examine the role of these polymorphisms in CAD. METHODS: Genomic DNAs obtained from 260 subjects (130 CAD patients and 130 control) were used in the study. ACE I/D and PAI-1 4G/5G polymorphism genotypes were determined using polymerase chain reaction (PCR) and electrophoresis. AT-1 A1166C polymorphism was determined using the PCR, restriction fragment length polymorphism (RFLP) and electrophoresis. The products amplified from AT1 gene by PCR were cut with HindIII restriction endonuclease and then analyzed by 2% agarose gel electrophoresis. The results were statistically analyzed with the chi-square test, Mann-Whitney U test, and independent two-sample t-test. RESULTS: Allele frequencies showed statistically significant differences between the patient and control groups. There was no statistically significant difference in ACEI/D genotype frequencies between the twogroups. Likewise, no statistically significant difference was found in the AT1 A1166C genotype frequencies; however, a statistically significant difference was found in allele frequencies. The PAI-1 4G/5G genotype frequency was significantly higher in the patient group. CONCLUSIONS: While there is a relationship between of PAI-1 gene 4G/5G polymorphism and CAD, ACE gene I/D and AT1 gene A1166C polymorphisms are not related. PAI-1 gene homozygous genotypes may be considered as a prognostic marker for CAD patients.
Intra-day changes in the levels of biochemistry parameters
(Kare Publishing, 2022) Arpaci, Abdullah; Dogan, Serdar; Gul, Bahar Unlu; Kus, Berna; Dirican, Emre
Objectives: People mostly live in the nonfasting state during a normal 24-h cycle. This study aims to compare the levels of 18 biochemical parameters during different hours of the day. Methods: A total of 18 biochemical tests of patients who visited outpatient clinics only once between January 1, 2010, and December 31, 2019, were evaluated at the Hatay Mustafa Kemal University (HMKU) Central Laboratory by using hospital database information. The tests are albumin (Alb), aspartate aminotransaminase (AST), alanine aminotransam-inase (ALT), alkaline phosphatase (ALP), amylase, blood urea nitrogen (BUN), calcium (Ca), total cholesterol (TC), cre-atine kinase (CK), creatinine (Cr), gamma-glutamyltransferase (GGT), glucose, high-density lipoprotein cholesterol (HDL-C), inorganic phosphorus (Pi), iron (Fe), total protein (TP), triglyceride (TG), and lipase. The blood samples of the patient were divided into eight groups according to their collection time as follows: (a) 07:00-07:59, (b) 08:00-08:59, (c) 09:00-09:59, (d) 10:00-10:59, (e) 11:00-11:59, (f) 12:00-13:59, (g) 14:00-14:59, and (h) 15:00-17:00. Results: A statistically significant difference was found between the groups in terms of all parameters except amylase, GGT, and TP (p<0.05). The effect size refers to the minimum amount of difference that is clinically significant. According to the effect size values, there was no significant difference between time groups in the following parameters: Alb, ALT, AST, Pi, Ca, TC, Cr, Fe, glucose, BUN, lipase, TG, ALP, HDL-C, and CK (?<0.30). Conclusion: When considering all of the results, nonfasting screening would not only be acceptable but also make physiologic sense. © 2022, Kare Publishing. All rights reserved.
Investigation of antioxidant enzyme polymorphism in chronic obstructive pulmonary disease patients
(Scientific Publishers of India, 2018) Arpaci, Abdullah; Yalin, Serap; Taskin, Devrim; Fakioglu, Fusun; Ulutas, Kemal Turker; Comelekoglu, Ulku
Background: Antioxidant system enzyme activity and polymorphism were investigated in Chronic Obstructive Pulmonary Disease (COPD), which is increasingly prevalent both in the world and our country. Methods: Malondialdehyde (MDA) was measured to determine lipid peroxidation, while Catalase (CAT), Paraoxonase (PON) and Superoxide Dismutase (SOD) enzyme activities were measured to determine antioxidant activity. For molecular analysis, leukocytes were separated and DNA was isolated from cell nuclei and the targeted genes were amplified by using PCR. Targeted base changes were detected by the restriction fragment length polymorphism technique. Results: Evaluating CAT polymorphism, there was 35 (35%) TT, 52 (52%) TC and 13 (13%) CC genotypes in the control group, as 38 (38%) TT, 40 (40%) TC and 22 (22%) CC genotypes in the patient. In SOD, there were 32 (32%) TT, 49 (49%) TC, 19 (19%) CC genotypes in the control group, as 34 (34%) TT, 50 (50%) TC and 16 (16%) CC genotypes in the patient. In PON55, there were 50 (50%) LL, 38 (38%) LM, 12 (12%) MM genotypes in the control group, as 39 (39%) LL, 49 (49%) LM and 12 (12%) MM genotypes in the patient. In PON192, there were 77 (77%) QQ, 21 (21%) QR, 2 (2%) RR genotypes in the control group, as 66 (66%) QQ, 29 (49%) QR, 5 (5%) RR genotypes in the patient. There was no significant difference in genotype distribution for CAT, SOD, PON55 and PON192 polymorphisms between groups. Conclusion: In conclusion, COPD patients were found to have a deficiency in the antioxidant defense system. This will lead to the development of oxidative stress in patients and the complications of COPD. There was no polymorphic difference between the control group and South African patients living in Adiyaman in COPD whose genetic characteristics were not fully explained. © 2018, Scientific Publishers of India. All rights reserved.
Possible role of endocannabinoids in olfactory and taste dysfunctions in Alzheimer's and Parkinson's patients and volumetric changes in the brain
(Elsevier Sci Ltd, 2022) Petekkaya, Emine; Kus, Berna; Dogan, Serdar; Bayarogullari, Hanifi; Mutlu, Turay; Melek, Ismet Murat; Arpaci, Abdullah
The purpose of this study is to determine the volumes of primary brain regions associated with smell and taste in Alzheimer's and Parkinson's patients and healthy controls using MR imaging and examine volumetric changes in comparison to smell/taste questionnaire and test results and endocannabinoid (EC) levels. The study included 15 AD patients with mild cognitive dysfunction scored as 18 <= MMSE <= 23, 15 PD patients with scores of 18 < MoCA < 26 and 18 <= MMSE <= 23, and 15 healthy controls. A taste and smell questionnaire was given to the participants, and their taste and smell statuses were examined using the Sniffin' Sticks smell identification test and Burghart Taste Strips. EC levels were analyzed in the blood serum samples of the participants using the ELISA method. The volumes of the left olfactory bulb (p = 0.001), left amygdala (p = 0.004), left hippocampus (p = 0.008), and bilateral insula (left p = 0.000, right p = 0.000) were significantly smaller in the Alzheimer's patients than the healthy controls. The volumes of the left olfactory bulb (p = 0.001) and left hippocampus (p = 0.009) were significantly smaller in the Parkinson's patients than the healthy controls. A significant correlation was determined between volume reduction in the left Rolandic operculum cortical region and taste dysfunction. EC levels were significantly higher in both AD (p = 0.000) and PD (p = 0.006) in comparison to the controls. Our results showed that volumetric changes occur in the brain regions associated with smell and taste in Alzheimer's and Parkinson's patients. It was observed that ECs played a role in these volumetric changes and the olfactory and taste dysfunctions of the patients.
Presentation of a new mutation in FMF and evaluating the frequency of distribution of the MEFV gene mutation in our region with clinical findings
(Springer, 2021) Arpaci, Abdullah; Dogan, Serdar; Erdogan, Hazal Fatma; El, Cigdem; Cura, Sibel Elmacioglu
Familial Mediterranean Fever (FMF), which is an autosomal recessive disease characterized by recurrent self-limiting fever, peritonitis, pleuritis, arthritis and erysipelas-like erythemas, has been common among ethnic groups such as Turkish, Armenian, Arabic and Jewish. The clinical presentation is caused by mutations in the MEFV gene encoding the Pyrin protein. In this study, we aimed to present a new mutation that has not been previously defined from the mutations in the MEFV gene which is responsible for the genetic pathology of familial Mediterranean fever and to evaluate the frequency of distribution of the MEFV gene mutation among different ethnic groups living in our region. In present retrospective study, a total of 2639 clinically suspected FMF patients who were referred to Hatay Mustafa Kemal University Hospital between 2010 and 2017 were recorded. MEFV gene mutations were observed using DNA sequence analysis. MEFV mutations were found in 2079 of the 2639 patients (78.7%) Among these patients 184 (6.97%) were homozygous, while 1365 (51.72%) were heterozygous. The most frequently observed mutation was R202Q (1319, 19.55%) followed by E148Q (n = 476, 7.05%), M694V (n = 439, 6.51%), V726A (n = 146, 2.16%) and M680I (n = 135, 2%). In a case clinically diagnosed as FMF, a new mutation called S145G (p. Ser145Gly, c.433A > G) was identified in exon 2 of the MEFV gene. Besides, addition of a new pathogenic MEFV variant to the literature, the relationship between the FMF clinic and homozygous form of R202Q, which was previously considered as a polymorphism, was highlighted.
Presentation of two new mutations in the 3?untranslated region of the ?-globin gene and evaluating the molecular spectrum of thalassemia mutations in the Mediterranean region of Turkey
(Springer, 2021) Arpaci, Abdullah; Gul, Bahar Unlu; Ozcan, Oguzhan; Ilhan, Gul; El, Cigdem; Dirican, Emre; Elmacioglu, Sibel
Thalassemia is a common genetic disorder. We aimed to present thalassemia mutation data that covers a period of 7 years from the Mediterranean region of Turkey by comparing with hemoglobin indices and to contribute to prenatal diagnosis and genetic counseling studies which should be decided very quickly. In this study, in which a retrospective archive was scanned, the cases were first grouped as alpha and beta thalassemia, and then beta thalassemia mutations were examined in a total of 5 groups as UTR-Pro, Codon, IVS, beta(0), and beta(+). We have reached the family of the proband that analyzed their Hb indices and genetic mutation. All mutations were statistically compared with Hb indices, HbF, and HbA(2). We have identified two new beta thalassemia mutations that have the feature of not being defined previously [HBB:C*62 A>G. (3 ' UTR+1536 A>G) and HBB:C*1 G>A (3 ' UTR+1475 G>A)]. The most commonly encountered 23 mutations account for 74.7% of all mutations which is unlike the literature. In the beta thalassemia group, 73 different mutations were detected. The most common beta thalassemia mutation was HBB: c.93-21 G>A (IVS I-110 G>A) with a frequency of 19.72%. A statistically significant difference was found when comparing the mutation groups with Hb indices. We think that it may be useful to evaluate the mutations we have newly identified too together with the Hb indices especially in evaluating the carriers of thalassemia and it will contribute to prenatal diagnosis and genetic counseling studies which should be decided very quickly.
The Role of Oxidative Stress in Apoptosis and Cell Proliferation of Human Bronchial Epithelial Cells
(Pleiades Publishing Inc, 2021) Ecevit, Hasret; Urhan-Kucuk, Meral; Uluca, Haluk; Tap, Duygu; Arpaci, Abdullah
Oxidative stress is an important pathophysiological factor in chronic respiratory diseases. Our study aimed at elucidating through which pathway oxidative stress-mediated apoptosis occurs at the gene expression level under oxidative stress in the human bronchial epithelial cell line BEAS-2B. Suitable doses and time period were detected by exposing BEAS-2B cells to hydrogen peroxide (H2O2) at different doses and time periods, and the oxidative-damaged cell culture model was designed. The treatment and control groups were compared in terms of gene expression levels determined by Quantitative Real Time Polymerase Chain Reaction. The oxidative-damaged cell model was confirmed by the spectrophotometric measurement of malondialdehyde and catalase activity (p < 0.05). Caspase-3, caspase-9, bax, and bak gene expression levels increased significantly in the treatment groups compared to the control group (p < 0.05). There were not any significant differences between the groups in terms of caspase-8, Bcl-2, and bik (p > 0.05). p53 and p21 gene expression levels were found to be significantly higher in the treatment groups (p < 0.05). H2O2-induced oxidative stress, induced apoptosis through the intrinsic pathway at gene expression level in the bronchial epithelial BEAS-2B cells was observed.
Upper Zone of Growth Plate and Cartilage Matrix (UCMA) Levels in Patients with Chronic Kidney Disease
(Inst Tecnologia Parana, 2020) Okuyan, Hamza Malik; Ozcan, Oguzhan; Dogan, Serdar; Arpaci, Abdullah; Turgut, Faruk Hilmi
Chronic kidney disease (CKD) is an important health problem across the world affecting the adult population with an enormous social and economic burden. Calcium regulation is also affected in patients with CKD, and related to several disorders including vascular calcifications, mineral bone disorders, and cardiovascular diseases (CVD). Upper zone of growth plate and cartilage matrix (UCMA) is vitamin K-dependent protein (VKDP) and acts as a calcification inhibitor in the cardiovascular system. The molecular mechanism of UCMA action remains unclear in CKD. In the current study, we aimed to investigate serum total UCMA levels and its association with calcium metabolism parameters in CKD patients including hemodialysis (HD) patients. Thirty-seven patients with CKD stage 3-5, 41 HD patients, and 34 healthy individuals were enrolled in this cross-sectional study. Serum UCMA and calcification related protein levels (Matrix Gla Protein (MGP), Osteocalcin (OC), and Fetuin-A) were analyzed with enzyme-linked immunosorbent assay (ELISA). Calcium mineral disorder parameters (Serum Ca, P, iPTH) were quantified with routine techniques. We, for the first time, report the potential biomarker role of UCMA in CKD including HD. Serum total UCMA levels were significantly higher in patients with CKD including HD patients than the healthy controls. Also, serum UCMA levels showed negative correlations with serum calcium, and eGFR, while showed positive relationships with P, iPTH, MGP, OC. Increased total UCMA levels may have a role in the Ca metabolism disorder and related to the pathogenesis of Vascular Calcification in patients with CKD.

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