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Önal D, Korkmaz H, Önal G, Pehlivanoğlu B. Body weight modulates the impact of oxytocin on chronic cold-immobilization stress response. Peptides 2024; 177:171202. [PMID: 38555975 DOI: 10.1016/j.peptides.2024.171202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/21/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
By activating the stress system, stress modulates various physiological parameters including food intake, energy consumption, and, consequently, body weight. The role of oxytocin in the regulation of stress and obesity cannot be disregarded. Based on these findings, we aimed to investigate the effect of intranasal oxytocin on stress response in high-fat-diet (HFD)--fed and control-diet-fed rats exposed to chronic stress. Cold-immobilization stress was applied for 5 consecutive days to male Sprague-Dawley rats fed either with a control diet (n=20) or HFD (n=20) for 6 weeks. Half of the animals in each group received oxytocin. Stress response was evaluated via plasma and salivary cortisol levels as well as elevated plus maze scores. Prefrontal cortex and hypothalamic oxytocin receptor (OxtR) expression levels were identified using western blot analysis. The results showed higher stress response in HFD-fed animals than in control animals both under basal and post-stress conditions. Oxytocin application had a prominent anxiolytic effect in the control group but an insignificant effect in the HFD group. While OxtR expression levels in the prefrontal cortex did not vary according to the body weight and oxytocin application, OxtR levels in the hypothalamus were higher in the HFD- and/or oxytocin-treated animals. Our results indicated that the peripheral and central effects of oxytocin vary with body weight. Moreover, obesity masks the anxiolytic effects of oxytocin, probably by reinforcing the stress condition via central OxtRs. In conclusion, elucidating the mechanisms underlying the central effect of oxytocin is important to cope with stress and obesity.
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Affiliation(s)
- Deniz Önal
- Faculty of Medicine, Department of Physiology, Balıkesir University, Balıkesir, Türkiye.
| | - Hilal Korkmaz
- Faculty of Medicine, Department of Physiology, Hacettepe University, Ankara, Türkiye
| | - Gizem Önal
- Oxford Parkinson's Disease Centre and Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford OX1 3QU, UK; Kavli Institute for Nanoscience Discovery, University of Oxford, Oxford OX1 3QU, UK
| | - Bilge Pehlivanoğlu
- Faculty of Medicine, Department of Physiology, Hacettepe University, Ankara, Türkiye
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Korkmaz H, Deveci CD, Üstün Y, Pehlivanoğlu B. Comparison of plasma oxytocin level in women with natural and surgical menopause. Endocrine 2023; 82:209-214. [PMID: 37477780 DOI: 10.1007/s12020-023-03453-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/09/2023] [Indexed: 07/22/2023]
Abstract
OBJECTIVE We aimed to investigate plasma oxytocin level in women with natural and surgical menopause and its relation with other metabolic parameters. METHODS This study included 89 postmenopausal women admitted to menopausal outpatient clinics and gave written consent to participate. Participants were allocated into natural (Group 1; n = 61) and surgical (Group 2; n = 28) menopause groups based on causative process for the onset of menopause. After the clinical evaluation and physical examination, blood samples are collected for biochemical profile and plasma oxytocin levels. The complete blood count, lipid profile, thyroid panel, blood glucose concentration, vitamin D and liver enzymes were measured by autoanalyzer, plasma oxytocin level was measured spectrophotometrically by ELISA method. RESULTS The groups were comparable for age, body mass index, menopause duration, gravity and blood parameters measured except significantly different plasma oxytocin levels between the two groups as 6.8 (3.2-20.6) ng/ml in natural menopause group and 4.2 (2.9-18.2) ng/ml in surgical menopause group (p < 0.001). Plasma oxytocin level was also negatively correlated with age (r = -0.245, p = 0.022) and menopausal duration (r = -0.275, p = 0.01). CONCLUSION Our results point out that oxytocin might be a target hormone to manage menopause associated disorders and/or it should be considered for its role in the differences in the incidences of postmenopausal diseases and quality of life in the course of natural and surgical menopausal transition.
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Affiliation(s)
- Hilal Korkmaz
- Department of Physiology, Faculty of Medicine, Hacettepe University, Ankara, Turkey.
| | - Canan Dura Deveci
- Department of Obstetrics and Gynecology, Ankara Training and Research Hospital, Ankara, Turkey
| | - Yusuf Üstün
- Department of Obstetrics and Gynecology, Ankara Training and Research Hospital, Ankara, Turkey
| | - Bilge Pehlivanoğlu
- Department of Physiology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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Barut Z, Nalbantoğlu AM, Korkmaz H, Demir Z, Hatipoğlu M, Özkan A, Bulut Ş. The role of salivary galectin-3 and galectin-9 levels in plaque-induced gingivitis and periodontitis. Heliyon 2023; 9:e19979. [PMID: 37809904 PMCID: PMC10559674 DOI: 10.1016/j.heliyon.2023.e19979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 08/26/2023] [Accepted: 09/07/2023] [Indexed: 10/10/2023] Open
Abstract
Background This study aimed to compare the salivary galectin-3 and galectin-9 levels in periodontitis, gingivitis, and periodontally healthy patients. Methods This study included 75 non-smokers who were systemically healthy. The clinical periodontal parameters of each participant were recorded. Individuals with periodontal health, gingivitis, and Stage II or Stage III Grade B periodontitis were allocated to the corresponding study groups (n = 25 each). Saliva samples were obtained from all individuals after they abstained from drinking and eating 1 h before sample collection. The galectin-3 and galectin-9 levels in the saliva were analyzed using enzyme-linked immunosorbent assay. One-way analysis of variance, student's t-test, Spearman correlation, and logistic regression were used for statistical analyses. Results The galectin-3 and galectin-9 levels were significantly higher in the periodontitis and gingivitis groups than in the healthy group (p < 0.001). The highest galectin-3 and galectin-9 levels were observed in the gingivitis group (p < 0.05). Overall, the galectin-3 levels were significantly higher than the galectin-9 levels in all the groups (p < 0.001). Conclusions The salivary galectin-3 and galectin-9 levels were high in patients with periodontitis and gingivitis, suggesting that they could be potential biomarkers for periodontal diseases.
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Affiliation(s)
- Zerrin Barut
- Department of Biochemistry, Faculty of Dentistry, Antalya Bilim University, Antalya, Turkey
| | - Ahmet Mert Nalbantoğlu
- Department of Periodontology, Faculty of Dentistry, Antalya Bilim University, Antalya, Turkey
| | - Hilal Korkmaz
- Department of Periodontology, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Zeynep Demir
- Department of Biology, Faculty of Science, Akdeniz University, Antalya, Turkey
| | - Mükerrem Hatipoğlu
- Department of Periodontology, Faculty of Dentistry, Akdeniz University, Antalya, Turkey
| | - Aysun Özkan
- Department of Biology, Faculty of Science, Akdeniz University, Antalya, Turkey
| | - Şule Bulut
- Department of Periodontology, Faculty of Dentistry, Kyrenia University, Kyrenia, Northern Cyprus, Turkey
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Korkmaz H, Hatipoğlu M, Kayar NA. Interleukin-38: A crucial player in periodontitis. Oral Dis 2023. [PMID: 37455397 DOI: 10.1111/odi.14657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/08/2023] [Accepted: 06/11/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND The objective of this study was to compare the levels of gingival crevicular fluid (GCF), salivary, and serum matrix metalloproteinase-9, interleukin (IL)-17, IL-36γ, and IL-38 in individuals with healthy periodontium, gingivitis, and periodontitis and to evaluate their correlations with clinical periodontal parameters. MATERIALS AND METHODS Ninety systemically healthy and nonsmoking volunteers divided into a healthy (H) group (n = 30), a gingivitis (G) group (n = 30), and a periodontitis (P) group (n = 30) were included in this study. Clinical periodontal parameters of volunteers were recorded, and GCF, unstimulated saliva, and serum samples were collected. Data analysis was done with enzyme-linked immunosorbent assays. The Kruskal-Wallis test and Bonferroni correction were used for multiple comparisons and post hoc statistical analyses. RESULTS The group H had significantly lower clinical parameters than the group P (p < 0.001). GCF and salivary IL-36γ and IL-38 levels were significantly higher in the group P than in the H and G groups (p < 0.05). Positive correlations between biochemical findings and clinical periodontal parameters were observed. CONCLUSIONS IL-36γ and IL-38 levels in GCF, saliva, and serum correlate with clinical periodontal parameters and may play a role in determining the activity of periodontitis.
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Affiliation(s)
- Hilal Korkmaz
- Department of Periodontology, Faculty of Dentistry Akdeniz University, Antalya, Turkey
| | - Mükerrem Hatipoğlu
- Department of Periodontology, Faculty of Dentistry Akdeniz University, Antalya, Turkey
| | - Nezahat Arzu Kayar
- Department of Periodontology, Faculty of Dentistry Akdeniz University, Antalya, Turkey
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Mumcu Ü, Korkmaz H, Durmaz A. The effect of the edaphic factors on the halophytic plant communities’ distribution in Yeşilırmak coastal wetlands (Türkiye). Rend Fis Acc Lincei 2023. [DOI: 10.1007/s12210-023-01145-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Korkmaz H, Arslanca T, Tekin E, Kayabaşı B, Akbulut KG. Evaluation of the relationship between plasma viscosity and selected menopausal symptoms using the Menopause Rating Scale. Menopause 2022; 29:1071-1076. [PMID: 35853211 DOI: 10.1097/gme.0000000000002017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The aim of this study was to investigate whether whole blood viscosity and plasma viscosity are associated with the severity of postmenopausal symptoms using the Menopause Rating Scale (MRS). METHODS This study included 108 postmenopausal women admitted to menopause clinics. Participants were divided into two groups according to their MRS scores. Groups 1 (n = 52) and 2 (n = 56) were composed of healthy postmenopausal women with MRS scores of <14 and ≥14 points, respectively. The clinical findings and hemorheological parameters were compared between the two groups. RESULTS Comparing plasma viscosity levels between the two groups showed that group 1 had 1.25 ± 0.08 centipoise, whereas group 2 had 1.30 ± 0.10 centipoise ( P = 0.03). The difference in plasma viscosity between the two groups persisted after adjustment for age (1.24 ± 0.08 vs 1.31 ± 0.10; P < 0.001). Plasma viscosity was also significantly correlated with age ( r = 0.384, P < 0.001), menopausal duration ( r = 0.362, P < 0.001), and urogenital symptoms ( r = 410, P < 0.001). CONCLUSIONS Increased plasma viscosity levels were significantly associated with selected postmenopausal symptoms, independent of age.
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Affiliation(s)
- Hilal Korkmaz
- From the Department of Physiology, Faculty of Medicine, Gazi University
| | - Tufan Arslanca
- the Department of Obstetrics and Gynecology, Ufuk University, Ankara, Turkey
| | - Esra Tekin
- From the Department of Physiology, Faculty of Medicine, Gazi University
| | - Burak Kayabaşı
- From the Department of Physiology, Faculty of Medicine, Gazi University
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Korkmaz H, Deveci CD, Alışık M, Korkmaz V, Kurdoğlu Z, Erel Ö, Üstün Y. How do thiol disulfide balance and copper-ceruloplasmin levels change in women using copper intrauterine devices? Gynecol Endocrinol 2022; 38:689-692. [PMID: 35758879 DOI: 10.1080/09513590.2022.2089650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Abstract
ObjectivesWe aimed to examine the change in plasma copper (Cu) level and copper transport proteins level before inserting Cu-IUD and after one menstrual cycle and to show the effect of this change on the thiol disulfide balance in women using copper-containing intrauterine device (Cu-IUD).MethodThirty-three reproductive women who admitted to the gynecology clinic and inserted Cu-IUD were examined in this study. Thiol-disulfide homeostasis, plasma Cu and ceruloplasmin levels and ceruloplasmin ferroxidase activity were measured using the blood samples collected just before inserting Cu-IUD and after one menstrual cycle.ResultsPlasma copper level (p = 0.006), ceruloplasmin (p < 0.001), Ceruloplasmin Ferroxidase (p = 0.005), thiol disulfide homeostasis parameters; native thiol (NT) (p = 0.004), and total thiol (p = 0.003) levels increased significantly.ConclusionAfter one menstrual cycle in women inserted intrauterine Cu-IUD for contraception, plasma levels of Cu, which is the oxidant molecule, increased significantly. Both plasma ceruloplasmin level and ceruloplasmin ferroxidase activity increased due to elevated Cu levels. This increased oxidant status in the acute period was balanced by the increase in the native thiol level.
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Affiliation(s)
- Hilal Korkmaz
- Department of Physiology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Canan Dura Deveci
- Department of Obstetrics and Gynecology, Ankara Training and Research Hospital, Ankara, Turkey
| | - Murat Alışık
- Department of Medical Biochemistry, Bolu Abant İzzet Baysal University, Bolu, Turkey
| | - Vakkas Korkmaz
- Gynecologic Oncology Surgery Department, Health Sciences University Etlik Zubeyde Hanim Women's Health Teaching and Research Hospital, Ankara, Turkey
| | - Zehra Kurdoğlu
- Department of Obstetrics and Gynecology, Yıldırım Beyazıt University, Ankara, Turkey
| | - Özcan Erel
- Department of Medical Biochemistry, Yıldırım Beyazıt University, Ankara, Turkey
| | - Yusuf Üstün
- Department of Obstetrics and Gynecology, Ankara Training and Research Hospital, Ankara, Turkey
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Karasu Y, Önal D, Zırh S, Yersal N, Korkmaz H, Üstün Y, Müftüoğlu S, Pehlivanoğlu B. Role of telocytes in the pathogenesis of ectopic pregnancy. Eur Rev Med Pharmacol Sci 2022; 26:110-119. [PMID: 35049026 DOI: 10.26355/eurrev_202201_27754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE The aim of this study is to investigate the effect of telocytes on tubal motility in ectopic pregnancies. PATIENTS AND METHODS This study included patients with ectopic pregnancy (EP) (n=10) and control patients (n=10) (partial salpingectomy for contraception). Immunohistochemical staining for c-Kit, vimentin, CD34 and S100A was performed to quantify telocytes in the mucosa, muscular layer and serosa of fallopian tubes of control and EP group. Spontaneous and KCl- (80 mM) induced contraction and cumulative progesterone dose-relaxation (10-11-10-5 M) and cumulative oxytocin dose-contraction (10-10-10-4 M) responses were recorded. RESULTS The groups were comparable in terms of age, gravida, parity, delivery type and gestational week (p>0.05). The homogenous distribution of telocytes in the mucosa and muscular layers of the control group, changed to heterogeneous localization the EP group. Immunohistochemical staining with vimentin, S100A, c-Kit and CD34, revealed increased telocyte counts in the muscular layer and serosa of the tubal tissues of EP. The frequency of the spontaneous contractions was higher in the control group (p<0.001); contrarily, the amplitude of the contractions was higher in ectopic pregnancies (p<0.001). Although the cumulative oxytocin dose-contraction curves were similar at all concentrations (p>0.05), the cumulative progesterone dose-relaxation curves exhibited higher relaxation response in the EP group at all concentrations (p<0.001). CONCLUSIONS Increased telocyte count in the fallopian tube may decrease tubal motility and may affect the transfer of the blastocyst to the uterus and possibly contribute to the pathogenesis of EP.
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Affiliation(s)
- Y Karasu
- University of Health Sciences, Ankara Training and Research Hospital, Department of Obstetrics and Gynecology, Ankara, Turkey.
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Korkmaz H, Güloğlu B. Psychiatric symptoms of wife of military personel who died in combat: The role of meaning in life and attachment styles. Eur Psychiatry 2021. [PMCID: PMC9480295 DOI: 10.1192/j.eurpsy.2021.2036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Traumatic experiences has a key role on the mental health of individuals. Turkish Armed Forces has been involved in various combat in and out of the country over the years. Individuals who are able to find meaning after a negative life events are better overcome their issues and return to their positive functioning. Unhealthy attachment styles has been observed more in clinical samples than healthy attachment styles. Objectives The aim of this study was to investigate the predictive role of attachment styles and meaning in life on psychiatric symptoms among wife of military personel who lost their lifes. Methods 74 women who lost their husband in combat to the study. Their age was between 21 and 74, with the mean of 46.93. 60 (75.9%) participants had a child when they lost their husband. 63 (79.7%) of them hasn’t been married again. Brief Symptom Inventory, Meaning in Life Scale and Relationship Scales Questtionnare were used to collect the data. Five different regression analysis was conducted. Results Finding meaning in life, dismissing and preoccupied attachment sytles predicted depression (R2= 51.8%). Finding meaning in life and fearful attachment styles predicted anxiety (R2= 46.2%). Finding meaning in life and fearful attachment styles predicted negative identity (R2= 51.1%). Finding meaning in life and dismissing attachment styles predicted hostility (R2= 50.4%) and somatization (R2= 57%). Conclusions Meaning in life has a protective role in the development of any psychopathologies whereas insecure attachment styles are risk factor. Disclosure No significant relationships.
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Korkmaz H, Güloğlu B. Online counseling experience of Turkish counselor candidates throughout COVID-19 pandemic. Eur Psychiatry 2021. [PMCID: PMC9470400 DOI: 10.1192/j.eurpsy.2021.1779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction As in many areas of life, the covid-19 epidemic has had a great impact on psychological counselor training. Although studies and practices on online counseling are increasing every day in the world, there has not been a psychological counseling method preferred by experts in Turkey, which comes from community culture and, where physical contact is important, until the pandemic. Objectives The examination of the opinions of the students studying in the last year of the psychological counseling and guidance undergraduate program during the pandemic regarding online counseling, where they perform their first psychological counseling experience. Methods The study was conducted with 10 counseling students, 9 women and 1 Man. The age range of the students is 22-24 and the average age is 20.6. The students’ opinions are taken with open-ended questions such as “Can you share your views on online counseling before online counseling?“ The reflection letter that the students responded to was subjected to content analysis. Results The findings of the study show that there are four themes: Emotions before the counseling process, Thoughts before the counseling process, Therapeutic relationship, Online counseling in professional life. For example; in online counseling, negative emotions such as anxiety, excitement, fear, anxiety, stress, anxiety, as well as feeling comfortable and safe are among the positive feelings they experience in their therapeutic relationships. Conclusions As a result, although students have a positive view of online counseling, they mainly prefer to do it face-to-face. The findings were discussed taking into account Turkish culture. Disclosure No significant relationships.
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Korkmaz H, Önal D, Alışık M, Erel Ö, Pehlivanoğlu B. The impact of oxytocin on thiol/disulphide and malonyldialdehyde/glutathione homeostasis in stressed rats. Biol Chem 2020; 401:1283-1292. [PMID: 32554831 DOI: 10.1515/hsz-2020-0190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 06/08/2020] [Indexed: 01/13/2023]
Abstract
We aimed to investigate the impact of oxytocin on serum thiol/disulphide and malonylyldialdehyde (MDA)/glutathione balance under acute stress (AS) and chronic stress (CS) exposure in rats. Animals were allocated into control (C), AS and CS groups, then the groups subdivided as intranasal oxytocin or saline applied groups, randomly. Animals in the AS or CS groups were exposed to combined cold-immobilisation stress. Salivary corticosterone levels and elevated plus maze (EPM) scores were used to assess stress response. MDA, glutathione, thiol-disulphide levels were measured in the serum samples. Oxytocin treatment attenuated stress response regardless of the stress duration verified by lower corticosterone level and favorable profile in EPM parameters measured. Furthermore, oxytocin modulated oxidant profile suggesting lowered oxidant stress with decreased serum MDA/glutathione and disulfide/native thiol ratios. Oxytocin improves the response of organism to stress via both its anxiolytic and antioxidant effects. That's why it can be considered as a protective measure to employ methods to increase endogenous oxytocin and/or to apply exogenous oxytocin to prevent stress-induced increase in oxidant stress, which plays a pivotal role in the pathogenesis of various stress-related diseases.
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Affiliation(s)
- Hilal Korkmaz
- Faculty of Medicine, Department of Physiology, Gazi University, Besevler, Ankara, 06510, Turkey.,Faculty of Medicine, Department of Physiology, Hacettepe University, Hacettepe, Ankara, 06230, Turkey
| | - Deniz Önal
- Faculty of Medicine, Department of Physiology, Hacettepe University, Hacettepe, Ankara, 06230, Turkey
| | - Murat Alışık
- Faculty of Medicine, Department of Biochemistry, Yıldırım Beyazıt University, Bilkent, Ankara, 06800, Turkey.,Medical Biochemistry, Bolu Abant Izzet Baysal University, Golkoy, Bolu, 14030, Turkey
| | - Özcan Erel
- Faculty of Medicine, Department of Biochemistry, Yıldırım Beyazıt University, Bilkent, Ankara, 06800, Turkey
| | - Bilge Pehlivanoğlu
- Faculty of Medicine, Department of Physiology, Hacettepe University, Hacettepe, Ankara, 06230, Turkey
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Arslanca T, Korkmaz H, Arslanca SB, Pehlivanoglu B, Celikel Ö. The Relationship between Vitamin D and Vasomotor Symptoms During the Postmenopausal Period. Clin Lab 2020; 66. [PMID: 32658424 DOI: 10.7754/clin.lab.2019.191116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND During the postmenopausal period, hot flashes are frequent symptoms and might impact quality of life. Vitamin D deficiency is commonly seen in this period. This study aims to assess the association between vitamin D deficiency and hot flashes. METHODS Two hundred ten postmenopausal women were recruited. The participants were divided into two groups: Group 1 consisted of postmenopausal women with hot flashes (n = 104), and Group 2 included the participants without hot flashes (n = 106). RESULTS The comparison of the two groups concerning vitamin D level showed that 52 patients Group 1 had vitamin 25(OH)D levels below 20 ng/mL, whereas only 25 patients in Group 2 (p < 0.001). After adjusting for age and menopause duration, there was also a significant difference between groups (21.65 vs. 34.17, respectively, p < 0.001). In multiple regression analysis, one unit decrease of vitamin 25(OH)D (1 - 0.941 = 0.059) increased the risk of hot flashes by 5.9%. CONCLUSIONS The decreases of vitamin D levels were significantly associated with hot flashes in postmenopausal women independent of age and menopause duration.
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Gökçen E, Demir B, Savrun A, Çaltekin İ, Yıldırım G, Korkmaz H, Albayrak L, Savrun ŞT. Evaluation of Inferior Vena Cava/Abdominal Aorta Diameter Index in Pulmonary Embolism. Eurasian J Emerg Med 2020. [DOI: 10.4274/eajem.galenos.2020.26122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Demirel C, Korkmaz H, Gurgul S, Yildiz A, Akarsu E, Erdal N. THE EFFECT OF GLUCOVANCE THERAPY ON BIOMECHANICAL DETERIORATION OF BONE IN STREPTOZOTOCIN-INDUCED DIABETIC RATS. Acta Endocrinol (Buchar) 2019; 15:301-304. [PMID: 32010347 PMCID: PMC6992399 DOI: 10.4183/aeb.2019.301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
AIM Is to evaluate the influence of glucovance therapy on biomechanical properties of bone in streptozotocin - induced diabetes mellitus (DM) in rats. MATERIALS AND METHODS A total of 28 male Wistar-Albino rats (12-week-old; 210-300 g) were divided into 4 groups including control (C; no treatment; n=7), sham [Sh; distilled water (gavage, for 8 weeks); n=7], diabetes [DM; streptozotocin (45 mg/kg, single i.p injection); n=7] and diabetes+ Glucovance treatment [DM+G; streptozotocin (45 mg/kg, single i.p injection) + Glucovance (Glucovance, 500/5 mg/kg/day/rat, gavage, for 8 weeks); n=7] groups. Body weight, blood glucose levels (BGLs), bone mineral density (BMD) and geometric/mechanical properties of bone tissue were evaluated. BGLs in diabetic rats were significantly increased compared to non-diabetic rats, while the body weights were decreased (p<0.05). RESULTS A significant difference was not detected between groups with regard to cross-sectional area of diaphyseal femur (p>0.05). Maximum load, energy absorption capacity, ultimate stress, ultimate strain, toughness and displacement were shown to decrease and stiffness was shown to increase in DM rats (p<0.05). Ultimate stress and maximum load were significantly increased in DM+G groups compared to DM groups (p<0.05). CONCLUSION Glucovance treatment seems to be effective in restoration of biomechanical deterioration of bone specific to STZ-induced DM.
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Affiliation(s)
- C. Demirel
- Gaziantep University, Faculty of Medicine, Dept. of Biophysics, Gaziantep, Turkey
| | - H. Korkmaz
- Suleyman Demirel University, Faculty of Medicine, Dept. of Endocrinology and Metabolic Disease, Isparta, Mersin University, Faculty of Medicine, Mersin, Turkey
| | - S. Gurgul
- Gaziantep University, Faculty of Medicine, Dept. of Biophysics, Gaziantep, Turkey
| | | | - E. Akarsu
- Gaziantep University, Faculty of Medicine, Dept. of Endocrinology and Metabolic Disease, Gaziantep, Turkey
| | - N. Erdal
- Dept. of Biophysics, Mersin, Turkey
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Kocak M, Akarsu E, Korkmaz H, Taysi S. THE EFFECT OF ANTITHYROID DRUGS ON OSTEOPONTIN AND OXIDATIVE STRESS IN GRAVES' DISEASE. Acta Endocrinol (Buchar) 2019; 15:221-224. [PMID: 31508180 PMCID: PMC6711651 DOI: 10.4183/aeb.2019.221] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE The aim of the present study is to evaluate the effects of methimazole (MTZ) and propylthiouracil (PTU) treatments on osteopontin (OPN) and oxidative stress in Graves' disease (GD). MATERIAL AND METHODS The study included 60 cases with GD in hyperthyroid state and taking no antithyroid treatment, and 30 healthy volunteers. GD patients were randomly separated into two groups; 30 of them took PTU, and the other 30 took MTZ treatments. Blood samples were taken from the patients with GD before the treatment, and three months after the treatment was begun, when they were in the euthyroid state; blood samples of the healthy control subjects were also taken at these times. RESULTS TAS and OSI levels before treatment were significantly higher in the GD group, when compared to the control group (p<0.001, for each). GD subjects taking PTU treatment had significantly higher TAS levels (p=0.001), and significantly lower TOS and OSI levels (p=0.008 and p=0.001, respectively). TAS levels significantly decreased in the patients taking MTZ treatment (p=0.029), but TOS and OSI levels did not change significantly (p>0.05). Pretreatment OPN levels were significantly higher in GD patients, when compared to the control group (p=0.014). OPN level significantly decreased in the GD group taking PTU treatment; however OPN levels in the group taking MTZ treatment did not change significantly when compared to the pretreatment value. CONCLUSION PTU treatment is more effective in decreasing OPN and oxidative stress in GD patients, when compared to the MTZ treatment.
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Affiliation(s)
- M. Kocak
- Pazarcik State Hospital, Internal Medicine, Kahramanmaras, Turkey
| | - E. Akarsu
- Gaziantep University, Faculty of Medicine, Department of Internal Medicine, Division of Endocrinology, Sahinbey, Gaziantep, Gaziantep, Turkey
| | - H. Korkmaz
- Suleyman Demirel University, Faculty of Medicine, Department of Internal Medicine, Division of Endocrinology, Isparta, Turkey
- *Correspondence to: Hakan Korkmaz, MD, Suleyman Demirel University, Faculty of Medicine, Department of Internal Medicine, Division of Endocrinology, 32100, Isparta, Turkey, E-mail:
| | - S. Taysi
- Gaziantep University, Faculty of Medicine, Department of Clinical Biochemistry, Sahinbey, Gaziantep, Turkey
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Aydin B, Aksu O, Asci H, Kayan M, Korkmaz H. A RARE CAUSE OF PITUITARY APOPLEXY: CABERGOLINE THERAPY. Acta Endocrinol (Buchar) 2018; 14:113-116. [PMID: 31149244 PMCID: PMC6516607 DOI: 10.4183/aeb.2018.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Pituitary apoplexy (PA) is a life-threatening clinical syndrome. Dopamine receptor agonists are the drugs of choice in the treatment of prolactinomas. The use of cabergoline is reported to cause an increased risk of PA, particularly in macroprolactinomas of cystic nature. In this report, we present a patient with a cystic macroprolactinoma who developed PA on the 16th week of cabergoline treatment.
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Affiliation(s)
- B. Aydin
- Adiyaman State Hospital, Endocrinology and Metabolic Disease, Adiyaman, Turkey
| | - O. Aksu
- Aydin State Hospital, Endocrinology and Metabolic Disease, Aydin, “Suleyman Demirel” University, Faculty of Medicine, Turkey
| | - H. Asci
- Department of Pharmacology, Turkey
| | - M. Kayan
- Department of Internal Medicine, Turkey
| | - H. Korkmaz
- Department of Radiology, Isparta, Turkey
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Tabur S, Korkmaz H, Baysal E, Hatipoglu E, Aytac I, Akarsu E. Auditory changes in acromegaly. J Endocrinol Invest 2017; 40:621-626. [PMID: 28035526 DOI: 10.1007/s40618-016-0602-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 12/12/2016] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The aim of this study is to determine the changes involving auditory system in cases with acromegaly. MATERIALS AND METHODS Otological examinations of 41 cases with acromegaly (uncontrolled n = 22, controlled n = 19) were compared with those of age and gender-matched 24 healthy subjects. Whereas the cases with acromegaly underwent examination with pure tone audiometry (PTA), speech audiometry for speech discrimination (SD), tympanometry, stapedius reflex evaluation and otoacoustic emission tests, the control group did only have otological examination and PTA. Additionally, previously performed paranasal sinus-computed tomography of all cases with acromegaly and control subjects were obtained to measure the length of internal acoustic canal (IAC). RESULTS PTA values were higher (p < 0.001 for right ears and p = 0.001 for left ears), and SD scores were (p = 0.002 for right ears and p = 0.002 for left ears) lower in acromegalic patients. IAC width in acromegaly group was narrower compared to that in control group (p = 0.03 for right ears and p = 0.02 for left ears). When only cases with acromegaly were taken into consideration, PTA values in left ears had positive correlation with growth hormone and insulin-like growth factor-1 levels (r = 0.4, p = 0.02 and r = 0.3, p = 0.03). Of all cases with acromegaly 13 (32%) had hearing loss in at least one ear, 7 (54%) had sensorineural type and 6 (46%) had conductive type hearing loss. CONCLUSION Acromegaly may cause certain changes in the auditory system in cases with acromegaly. The changes in the auditory system may be multifactorial causing both conductive and sensorioneural defects.
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Affiliation(s)
- S Tabur
- Division of Endocrinology and Diabetes, Department of Internal Medicine, Gaziantep University Medical Faculty, Gaziantep, Turkey
| | - H Korkmaz
- Division of Endocrinology and Diabetes, Department of Internal Medicine, Endocrinology and Metabolic Disease, Edirne State Hospital, 22030, Edirne, Turkey.
| | - E Baysal
- Department of Otorhinolaryngology, Inonu University Medical Faculty, Malatya, Turkey
| | - E Hatipoglu
- Division of Endocrinology and Diabetes, Department of Internal Medicine, Biruni University, Istanbul, Turkey
| | - I Aytac
- Department of Otorhinolaryngology, Mardin Midyat State Hospital, Mardin, Turkey
| | - E Akarsu
- Division of Endocrinology and Diabetes, Department of Internal Medicine, Gaziantep University Medical Faculty, Gaziantep, Turkey
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Gökcen E, Caltekin İ, Savrun A, Korkmaz H, Savrun ŞT, Yıldırım G. Alterations in optic nerve sheath diameter according to cerebrovascular disease sub-groups. Am J Emerg Med 2017; 35:1607-1611. [PMID: 28473274 DOI: 10.1016/j.ajem.2017.04.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 03/25/2017] [Accepted: 04/28/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND ONSD (optic nerve sheath diameter) is a method used for indirect measurement of the increased intracranial pressure. In previous studies, the relation between the increased intracranial pressure and ONSD was analyzed in the patients suffering from cerebrovascular diseases (CVD). In our study, the patients suffering from ischemic CVD were categorized into 4 subgroups according to Oxfordshire Community Stroke Project classification (OCSP); the relationship between each group and ONSD, and the influence on each eye were analyzed. METHODS The study included the patients over the age of 18 applying to the emergency department of Malatya State Hospital with the symptoms of stroke between the dates of 1/1/2015 and 1/9/2016. The patients diagnosed with stroke by means of clinical and neuroradiological imaging were examined in 4 subgroups according to Oxfordshire Community Stroke Project. The aim of the study is to predict the intracranial pressure (ICP) levels of the patients through ONSD measurement and CT images. RESULTS In the comparison of the right and left optic nerve sheath diameters of CVD group and control group, the obtained results were found to be statistically significant (p<0.001). When the CVD subgroups were compared with the control group in terms of right and left optic nerve sheath diameters, the highest right-left optic nerve sheath diameter was detected to be in TACI (Total Anterior Circulation Infarction) group (p<0.001). DISCUSSION/CONCLUSION In the early cases of CVD, mortality and morbidity can be decreased through the early diagnosis of the possible existence of ICP increase according to ONSD level.
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Affiliation(s)
- Emre Gökcen
- Emergency Department of Malatya State Hospital, Malatya, Turkey.
| | | | - Atakan Savrun
- Emergency Department of Dr. Nafiz Körez Sincan State Hospital, Sincan, Ankara, Turkey
| | - Hilal Korkmaz
- Physiology Department of Hacettepe University, Ankara, Turkey
| | - Şeyda Tuba Savrun
- Emergency Department of Ankara Atatürk Research and Training Hospital, Ankara, Turkey
| | - Gökhan Yıldırım
- Radiology Department of Malatya State Hospital, Malatya, Turkey
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Korkmaz S, Korkmaz H. Effect of alterations in apoptotic pathway on development of metabolic syndrome in patients with psoriasis vulgaris. Br J Dermatol 2017; 176:1549-1557. [DOI: 10.1111/bjd.15185] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2016] [Indexed: 12/14/2022]
Affiliation(s)
- S. Korkmaz
- Trakya University Faculty of Medicine; Department of Dermatology; Edirne Turkey
| | - H. Korkmaz
- Edirne Sultan 1. Murat State Hospital; Department of Endocrinology and Metabolic Disease; Edirne Turkey
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20
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Korkmaz V, Kurdoglu Z, Alisik M, Turgut E, Sezgın OO, Korkmaz H, Ergun Y, Erel O. Thiol/disulfide homeostasis in postmenopausal osteoporosis. J Endocrinol Invest 2017; 40:431-435. [PMID: 27858341 DOI: 10.1007/s40618-016-0585-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 11/09/2016] [Indexed: 12/23/2022]
Abstract
AIM To evaluate the impact of postmenopausal osteoporosis on thiol/disulfide homeostasis. MATERIALS AND METHODS A total of 75 participants were divided into two groups: Group 1 (n = 40) was composed of healthy postmenopausal women, and group 2 (n = 35) was composed of women with postmenopausal osteoporosis. Clinical findings and thiol/disulfide homeostasis were compared between the two groups. RESULTS The disulfide/native thiol ratio was 8.6% ± 3.6 in group 1 and 12.7% ± 8.4 in group 2 (p = 0.04). The disulfide/native thiol percent ratio was significantly higher in group 2 after adjustment for the years since menopause and age (p < 0.05). The native thiol/total thiol percent ratio was 85.6% ± 4.8 in group 1 and 73.8% ± 24.9 in group 2 (p = 0.01). The native thiol/total thiol percent ratio was significantly lower in group 2 after adjustment for the years since menopause and age (p < 0.05). CONCLUSION Thiol/disulfide homeostasis shifted to the disulfide side independent of age and years since menopause in postmenopausal osteoporosis.
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Affiliation(s)
- V Korkmaz
- Department of Obstetrics and Gynecology, Ankara Training and Research Hospital, Ankara, Turkey.
| | - Z Kurdoglu
- Department of Obstetrics and Gynecology, Ankara Training and Research Hospital, Ankara, Turkey
| | - M Alisik
- Department of Biochemistry, Yıldırım Beyazıt University, Ankara, Turkey
| | - E Turgut
- Department of Obstetrics and Gynecology, Ankara Training and Research Hospital, Ankara, Turkey
| | - O O Sezgın
- Department of Biochemistry, Ankara Training and Research Hospital, Ankara, Turkey
| | - H Korkmaz
- Department of Physiology, Hacettepe University, Ankara, Turkey
| | - Y Ergun
- Department of Obstetrics and Gynecology, Ankara Training and Research Hospital, Ankara, Turkey
| | - O Erel
- Department of Biochemistry, Yıldırım Beyazıt University, Ankara, Turkey
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21
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Ugan Y, Korkmaz H, Doğru A, Koca Y, Balkarlı A, Aylak F, Tunc S. AB0894 The Significance of Urinary Beta-2 Microglobulin Level for Differential Diagnosis of Familial Mediterranean Fever and Acute Appendicitis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Korkmaz H, Bozdag Z, Akarsu E, Tarakcioglu M, Ulusal H, Gökalp MA. Macrophage Infiltration into Subcutaneous Adipose Tissue is Associated with Local Levels of 11BHSD1. Exp Clin Endocrinol Diabetes 2016; 124:474-480. [PMID: 27219880 DOI: 10.1055/s-0042-106292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The present study aimed to evaluate the infiltration of macrophages in form of crown-line structures (CLS) in subcutaneous adipose tissue (SAT) of obese individuals, and to investigate the effect of these on both metabolic parameters and adipose tissue 11-beta-hydroxysteroid dehydrogenase type 1 (11BHSD1) enzyme levels. A total of 53 obese (10 men, 43 woman) enrolled in the study. Body mass index (BMI), waist circumference (WC), hip circumfrence, and systolic (SBP) and diastolic blood pressures (DBP) of all subjects were recorded. Insulin resistance was determined using the homeostasis model assessment (HOMA). The concentration of SAT, tumor necrosis factor (TNF)-α, interleukin (IL)-6, 11BHSD1 were performed by enzyme-linked immunosorbent assay (ELISA) method. The infiltration of macrophages in form of CLS in adipose tissue were determined using cell-specific stains against CD68. There was no significant difference between the CLS+group and the CLS- group in terms of age, gender, BMI, WC, waist-to-hip circumference ratio (WHR), SBP and DBP levels. Fasting plasma glucose (FPG), HOMA-IR, insulin and SAT TNF-α levels were higher in the CLS+group compared to the CLS- group. FPG and SAT TNF-α levels were significantly higher in participants with high CLS density compared to participants with low density CLS. SAT 11BHSD1 levels was significant higher in the CLS+group compare to the CLS- group and in the high CLS density group compared to the low density group. In conclusion, the infiltration of macrophages in the form of CLS in SAT is associated with increased 11BHSD1 levels. It may be an important mechanism in the development of metabolic disorders.
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Affiliation(s)
- H Korkmaz
- Endocrinology and Metabolic Disease, Edirne State Hospital, Edirne, Turkey
| | - Z Bozdag
- Department of Pathology, Faculty of Medicine, Gaziantep University, Sahinbey, Gaziantep, Turkey
| | - E Akarsu
- Division of Endocrinology, Department of Internal Medicine, Faculty of Medicine, Gaziantep University, Sahinbey, Gaziantep, Turkey
| | - M Tarakcioglu
- Department of Clinical Biochemistry, Faculty of Medicine, Gaziantep University, Sahinbey, Gaziantep, Turkey
| | - H Ulusal
- Department of Clinical Biochemistry, Faculty of Medicine, Gaziantep University, Sahinbey, Gaziantep, Turkey
| | - M A Gökalp
- Department of General Surgery, Faculty of Medicine, Gaziantep University, Sahinbey, Gaziantep, Turkey
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Abstract
AIM To investigate the effects of severity of preeclampsia on thiol-disulfide homeostasis (TDH). MATERIAL AND METHODS A total of 108 participants were divided into three groups: Group 1 was composed of pregnant women with no obstetric complications, Group 2 included pregnant women with mild preeclampsia, and Group 3 consisted of pregnant women with severe preeclampsia. TDH parameters were determined, and comparisons of clinical and routine laboratory test findings were made in all groups. RESULTS The serum native thiol level was 347.9 ± 27.4 in the control group, 237.2 ± 44.2 in the mild preeclampsia group, and 227.9 ± 53.1 in the severe preeclampsia group (p < 0.001). The serum total thiol level was 376.1 ± 31.9 in the control group, 261.8 ± 49.4 in the mild preeclampsia group, and 248.3 ± 57.4 in the severe preeclampsia group (p < 0.001). The disulfide level was 14.1 ± 5.6 in the control group, 12.3 ± 5.1 in the mild preeclampsia group, and 10.2 ± 4.8 in the severe preeclampsia group (p = 0.001). A significant correlation between impairment in degree of TDH and severity of preeclampsia was observed. CONCLUSION TDH was impaired in women with preeclampsia, and this impairment increased with disease severity. Therefore, impaired TDH may have a role in the etiopathogenesis of the disease.
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Affiliation(s)
- Vakkas Korkmaz
- a Department of Obstetrics and Gynecology , Ankara Training and Research Hospital , Ankara , Turkey
| | - Zehra Kurdoglu
- a Department of Obstetrics and Gynecology , Ankara Training and Research Hospital , Ankara , Turkey
| | - Murat Alisik
- b Department of Biochemistry , Yildirim Beyazit University , Ankara , Turkey
| | - Orkun Cetin
- c Department of Obstetrics and Gynecology , Yuzuncu Yil University , Van , Turkey
| | - Hilal Korkmaz
- d Department of Physiology , Hacettepe University , Ankara , Turkey , and
| | - Hatice Surer
- e Department of Biochemistry , Ankara Training and Research Hospital , Ankara , Turkey
| | - Ozcan Erel
- b Department of Biochemistry , Yildirim Beyazit University , Ankara , Turkey
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Akarsu E, Korkmaz H, Oguzkan Balci S, Borazan E, Korkmaz S, Tarakcioglu M. Subcutaneous Adipose Tissue Type II Deiodinase Gene Expression Reduced in Obese Individuals with Metabolic Syndrome. Exp Clin Endocrinol Diabetes 2016; 124:11-5. [PMID: 26588490 DOI: 10.1055/s-0035-1564129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The present study aimed to evaluate the role of subcutaneous adipose tissue (SAT) type II deiodinase enzyme gene (DIO2) expression in developing metabolic syndrome (MetS). A total of 51 obese patients with MetS and without MetS and 13 healthy subjects enrolled in the study. Body mass index (BMI), waist circumference (WC), waist-to-hip circumference ratio (WHR), hip circumference, and systolic (SBP) and diastolic blood pressures (DBP) of all subjects were recorded. Fasting plasma glucose (FPG), fasting plasma insulin, high density lipoprotein- cholesterol (HDL-C), low density lipoprotein-cholesterol (LDL-C), total cholesterol (TC) and triglyceride (TG) of all subjects were analyzed. Expression of the DIO2 gene in adipose tissue was determined by reverse transcription polymerase chain reaction (qRT-PCR). BMI, WC and WHR were not significantly difference between obese with and without MetS. SBP, DBP, FPG and TG were significantly higher in obese with MetS group than obese without MetS group. While the free triiodothyronine (T3) level was in the normal range in all group, it was significantly lower in the obese with MetS than both obese without MetS and control group. DIO2 expression was significantly lower in the obese with MetS group compared to the control. In correlation analysis, DIO2 expression was negatively correlated with DBP, TG and homeostasis model assessment of insulin resistance (HOMA-IR) levels and positively correlated with free T3. In conclusion, the reduction of SAT DIO2 expression is negatively correlated with DBP and TG levels that are associated with the MetS. This might have an effect on developing MetS. We believe that DIO2 gene may be an important molecular target for future studies in developing targeted treatment options for obese people with MetS.
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Affiliation(s)
- E Akarsu
- Gaziantep University, Faculty of Medicine, Department of Endocrinology and Metabolic Disease
| | - H Korkmaz
- Edirne State Hospital, Endocrinology and Metabolic Disease
| | - S Oguzkan Balci
- Gaziantep University, Faculty of Medicine, Department of Medical Biology
| | - E Borazan
- Gaziantep University, Faculty of Medicine, Department of General Surgery
| | - S Korkmaz
- Trakya University, Faculty of Medicine, Department of Dermatology
| | - M Tarakcioglu
- Gaziantep University, Faculty of Medicine, Department of Clinical Biochemistry
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Tabur S, Sezen H, Korkmaz H, Ozkaya M, Akarsu E. High Prolidase Levels may be a Marker of Irreversible Extracellular Matrix Changes in Controlled Acromegaly Patients? Exp Clin Endocrinol Diabetes 2015; 124:82-6. [PMID: 26575119 DOI: 10.1055/s-0035-1564200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The present study aimed to evaluate the activity of prolidase in controlled acromegaly patients and its association with oxidative stress. 25 acromegalic patients in remission who were followed in our outpatient clinic and 31 healthy controls were enrolled in the study. Serum growth hormone (GH), insulin-like growth factor 1 (IGF-1), total antioxidative status (TAS), total oxidative stress (TOS), total free sulfhydryl (-SH), paraoxonase (PON), arylesterase (ARE), lipid hydroperoxide (LOOH) and prolidase activity levels were measured. Percent ratio of TOS to TAS level was accepted as oxidative stress index (OSI). Serum prolidase activity, TOS, OSI, and LOOH levels were significantly higher in acromegaly patients compared to the healthy control group (p<0.001, p=0.001, p<0.001, and p<0.001, respectively). SH levels were significantly lower in the acromegaly patients compared to the healthy control group (p=0.002). Prolidase activity were positively correlated with TOS, OSI, LOOH and negatively correlated with -SH in patients with acromegaly (r=0.471, p<0.001; r=0.527, p<0.001; r=0.717, p<0.001; r=- 0.516, p<0.001, respectively). These associations were confirmed in the multiple regression analysis (R(2)=0.502, p<0.001). In conclusion, serum prolidase activity and oxidative stress levels were high in controlled acromegaly patients. These results suggest that extracellular matrix changes continue eventhough the disease is controlled, and elevated oxidative stress is involved in the increased prolidase activity in acromegaly patients.
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Affiliation(s)
- S Tabur
- Gaziantep University, Gaziantep, Turkey
| | - H Sezen
- Faculty of Medicine, Harran University, Sanliurfa, Turkey
| | - H Korkmaz
- Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
| | - M Ozkaya
- Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
| | - E Akarsu
- Faculty of Medicine, Gaziantep University, Gaziantep, Turkey
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Korkmaz H, Tabur S, Ozkaya M, Oguz E, Aksoy N, Akarsu E. Serum prolidase levels in Graves' disease without ophthalmopathy and its association with oxidative status. J Endocrinol Invest 2015; 38:1167-73. [PMID: 25900177 DOI: 10.1007/s40618-015-0278-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 03/17/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate serum prolidase levels and its association with oxidative stress in autoimmune thyroid disease (AITD). MATERIALS AND METHODS 25 with Hashimoto thyroiditis (HT) and 25 patients Graves' disease (GD), and 27 healthy controls were enrolled in the study. The patients with signs of Graves' ophthalmopathy were excluded from the study. Serum samples were obtained in euthyroid period at the third month of treatment. Serum prolidase, total antioxidant status (TAS), total oxidative stress (TOS), and total free sulfhydryl (-SH) levels were measured. RESULTS Serum prolidase levels were significantly higher in the patients with GD compared to the HT and the healthy control group. Oxidative stress index (OSI) and TOS levels of the patients with both GD and HT were significantly higher compared to those of the control group (p < 0.001, for each), while -SH levels were significantly lower (p < 0.001, for each). There was no significant difference between the patients with HT and healthy control group in terms of prolidase levels (p = 0.580). Prolidase levels were positively correlated with TOS and OSI and negatively correlated with -SH (r = 0.565, p = 0.003; r = 0.604, p = 0.001; r = -0.532, p = 0.006). CONCLUSION Serum prolidase activity is increased in GD patients without signs of ophthalmopathy, and showed a positive correlation with oxidative stress parameters.
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Affiliation(s)
- H Korkmaz
- Division of Endocrinology, Department of Internal Medicine, Faculty of Medicine, Gaziantep University, 27100, Sahinbey, Gaziantep, Turkey.
| | - S Tabur
- Division of Endocrinology, Department of Internal Medicine, Faculty of Medicine, Gaziantep University, 27100, Sahinbey, Gaziantep, Turkey
| | - M Ozkaya
- Division of Endocrinology, Department of Internal Medicine, Faculty of Medicine, Gaziantep University, 27100, Sahinbey, Gaziantep, Turkey
| | - E Oguz
- Department of Medical Pharmacology, Faculty of Medicine, Harran University, 63300, Sanliurfa, Turkey
| | - N Aksoy
- Department of Clinical Biochemistry, Faculty of Medicine, Harran University, 63300, Sanliurfa, Turkey
| | - E Akarsu
- Division of Endocrinology, Department of Internal Medicine, Faculty of Medicine, Gaziantep University, 27100, Sahinbey, Gaziantep, Turkey
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Tabur S, Korkmaz H, Özkaya M, Elboğa U, Tarakçıoglu M, Aksoy N, Akarsu E. Serum calprotectin: a new potential biomarker for thyroid papillary carcinoma. Tumour Biol 2015; 36:7549-56. [PMID: 25916207 DOI: 10.1007/s13277-015-3468-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 04/15/2015] [Indexed: 01/22/2023] Open
Abstract
The aim of this study was to evaluate serum calprotectin levels and oxidative stress status in patients with papillary thyroid carcinoma (PTC) and the changes in their levels after total thyroidectomy. The study involved 30 patients with PTC and 30 healthy controls. Blood samples were obtained from the PTC patients before and 1 month after the operation. Preoperative and postoperative serum samples from PTC patients and healthy controls were analysed for calprotectin, total antioxidant status (TAS), total oxidant status (TOS) and lipid hydroperokside (LOOH). The preoperative calprotectin, TOS, OSI and LOOH levels of the patients with PTC were significantly higher compared to those of the control group (p < 0.001, for each). The levels of calprotectin decreased significantly in patients with PTC after the operation (p < 0.001), while TAS, TOS and OSI levels remained unchanged (p = 0.313, p = 0.085 and p = 0.163, respectively). Preoperative serum calprotectin levels were positively correlated with TOS, OSI and LOOH levels and negatively correlated with TAS levels in patients with PTC. In conclusion, serum calprotectin levels is increased in patients with PTC, and calprotectin is positively correlated with TOS and LOOH. Serum calprotectin levels is significantly decreased after total thyroidectomy.
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Affiliation(s)
- S Tabur
- Department of Internal Medicine, Division of Endocrinology, Faculty of Medicine, Gaziantep University, 27100, Sahinbey, Gaziantep, Turkey
| | - H Korkmaz
- Edirne State Hospital, Endocrinology and Metabolic Disease, 22030, Edirne, Turkey.
| | - M Özkaya
- Department of Internal Medicine, Division of Endocrinology, Faculty of Medicine, Gaziantep University, 27100, Sahinbey, Gaziantep, Turkey
| | - U Elboğa
- Department of Nuclear Medicine, Faculty of Medicine, Gaziantep University, 27100, Sahinbey, Gaziantep, Turkey
| | - M Tarakçıoglu
- Department of Clinical Biochemistry, Faculty of Medicine, Gaziantep University, 27100, Sahinbey, Gaziantep, Turkey
| | - N Aksoy
- Department of Clinical Biochemistry, Faculty of Medicine, Harran University, 63300, Sanliurfa, Turkey
| | - E Akarsu
- Department of Internal Medicine, Division of Endocrinology, Faculty of Medicine, Gaziantep University, 27100, Sahinbey, Gaziantep, Turkey
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Tabur S, Oztuzcu S, Oguz E, Korkmaz H, Eroglu S, Ozkaya M, Demiryürek AT. Association of Rho/Rho-kinase gene polymorphisms and expressions with obesity-related metabolic syndrome. Eur Rev Med Pharmacol Sci 2015; 19:1680-1688. [PMID: 26004609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE The metabolic syndrome (MetS) is a common multicomponent condition including abdominal obesity, dyslipidemia, hypertension and hyperglycemia. The aim of this study was to investigate the associations of Rho GTPase and Rho-kinase (ROCK) gene polymorphisms and expressions with MetS in a Turkish population. PATIENTS AND METHODS A total of 141 obese MetS patients and 163 healthy controls with similar age and sex were included to this study. Polymorphisms were analyzed in genomic DNA using a BioMark 96.96 dynamic array system. mRNA from blood samples was extracted, and real-time polymerase chain reaction was performed for gene expressions. RESULTS We observed that genotype (CC, 18.1%; CA, 13.4%, and AA, 68.5%) and allele (C, 24.8%; A, 75.2%) frequencies for the rs35996865 polymorphism of the ROCK1 gene in patients were markedly different from controls (CC, 84.2%; CA, 2.9%, and AA, 12.9%; C, 85.6%; A, 14.4%, p < 0.0001). In the rs2230774 (Thr431Asn) polymorphism of the ROCK2 gene, there were increases in the CC genotype (16.5%) and C allele frequencies (20.4%) in MetS patients when compared with the control group (CC, 6.0%, p = 0.0009, and C, 6.7%, p < 0.0001). However, no associations with the other 18 polymorphisms studied were found. Although there were an increase in peripheral blood mRNA RhoH expressions, marked decreases in RhoC, RhoBTB1, RhoV, Rnd1, and CDC42 gene expressions were noted in MetS patients. CONCLUSIONS This is the first study to provide evidence that ROCK gene polymorphisms and gene expressions of the Rho GTPase proteins may modify individual susceptibility to MetS in the Turkish population.
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Affiliation(s)
- S Tabur
- Division of Endocrinology, Department of Internal Medicine, Faculty of Medicine, University of Gaziantep, Gaziantep, Turkey.
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Demirel C, Balcı S, Korkmaz H, Akarsu E. Relationship between the Level of Hippocampal Leptin Receptor Gene Expression and Learning Performance in Diabetic Rats. Exp Clin Endocrinol Diabetes 2014; 122:615-9. [DOI: 10.1055/s-0034-1385925] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- C. Demirel
- Department of Biophysics, Faculty of Medicine, Gaziantep University, Sahinbey, Gaziantep, Turkey
| | - S. Balcı
- Department of Medical Biology, Faculty of Medicine, Gaziantep University, Sahinbey, Gaziantep, Turkey
| | - H. Korkmaz
- Division of Endocrinology, Department of Internal Medicine, Faculty of Medicine, Gaziantep University, Sahinbey, Gaziantep, Turkey
| | - E. Akarsu
- Division of Endocrinology, Department of Internal Medicine, Faculty of Medicine, Gaziantep University, Sahinbey, Gaziantep, Turkey
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Korkmaz H, Temel T, Bugdaci MS, Tekelioglu Y, Ozoran Y, Kapicioglu S. Effects of fish oil on cell proliferation and liver injury in an experimental model of acute hepatic injury induced by carbon tetrachloride. BRATISL MED J 2014; 115:185-9. [PMID: 24797591 DOI: 10.4149/bll_2014_039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE We aimed to investigate the effect of fish oil on the hepatic injury and cell cycle phases as well as cellular proliferation- regeneration in a rat model of acute hepatic injury induced by carbon tetrachloride. BACKGROUND Compensatory cell proliferation and tissue regeneration occurs as an endogenous response following chemical damage to the liver and enable animals to over come the injury. Data related to effect of fish oil on liver injury induced by chemical hepatotoxicants are controversial. METHOD 60 male Wistar-albino rats were fed either with a diet supplemented with 20% fish oil or standard rat feed for 2 weeks. After an overnight fast, rats in each group were administered either 1 ml/kg carbon tetrachloride or saline intraperitoneally. RESULTS Fish oil enriched diet significantly enhanced the carbon tetrachloride - associated necroinflammatory damage, ballooning degeneration and the elevation of serum transaminases induced by carbon tetrachloride. Furthermore fish oil diet prevented cell proliferation, increased the proportion of cells in the G0/G1phase concomitant with a decrease in the proportion of cells in the S phase cells. CONCLUSION Fish oil diet exacerbates the hepatic injury and prevents cell proliferation-regeneration in normal and injured liver cells. Suppression of tissue regeneration by fish oil may lead to progression of the hepatic injury (Tab. 3, Fig. 4, Ref. 31).
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31
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Korkmaz H, Özkaya M, Akarsu E, Korkmaz S, Özsaraç M, Saydam E. Virilization in a postmenopausal woman: Ovarian Leydig cell tumor. Eur Geriatr Med 2014. [DOI: 10.1016/j.eurger.2013.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Yavuzkır M, Kurtoğlu E, Yılmaz M, Korkmaz H, Çakmak T, Uysal A, Özguler M, Güler A, Akbulut M. OP-221 Relationship Between Mean Platelet Volume Elevatıon And Left Ventrıcular Mass Index in Hypertensive Patients. Am J Cardiol 2014. [DOI: 10.1016/j.amjcard.2014.01.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kurtoglu E, Balta S, Sincer I, Altas Y, Atas H, Yilmaz M, Korkmaz H, Erdem K, Akturk E, Demirkol S, Can C. OP-028 Comparision of Effects of Rosuvastatin Versus Atorvastatin Treatment on Plasma Levels of Asymmetric Dimethylarginine in Hyperlipidemic Patients with Coronary Artery Disease. Am J Cardiol 2014. [DOI: 10.1016/j.amjcard.2014.01.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Korkmaz H, Elsürer Ç, Temel T. A rare cause of dysphagia: hairy esophagus. Endoscopy 2014; 45 Suppl 2 UCTN:E321. [PMID: 24008487 DOI: 10.1055/s-0033-1344572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- H Korkmaz
- Faculty of Medicine, Departments of Internal Medicine, Division of Gastroenterohepatology, Selcuk University, Selcuklu, Konya, Turkey.
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Affiliation(s)
- H Korkmaz
- Division of Gastroenterology, Selcuk University, Selcuklu, Konya, Turkey.
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Kurtoğlu E, Korkmaz H, Aktürk E, Yilmaz M, Altaş Y, Uckan A. PP-076 ASSOCIATION OF MITRAL ANNULUS CALCIFICATION WITH HIGH-SENSITIVITY C-REACTIVE PROTEIN. Int J Cardiol 2012. [DOI: 10.1016/s0167-5273(12)70298-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Altas Y, Çelik A, Korkmaz H, Kobat M, Kurtoglu E, Yavuzkir M. OP-324 PROLONGED P WAVE DISPERSION IN PATIENTS WITH ACUTE ISCHEMIC STROKE. Int J Cardiol 2012. [DOI: 10.1016/s0167-5273(12)70200-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kurtoglu E, Akturk E, Korkmaz H, Atas H, Çuglan B, Cansel M, Açikgoz N, Ermis N, Yagmur J, Pekdemir H, Çelik A. OP-130 HEART RATE VARIABILITY IN PATIENTS WITH MITRAL ANNULAR CALCIFICATION. Int J Cardiol 2012. [DOI: 10.1016/s0167-5273(12)70073-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Tatar EC, Yildirim UM, Dündar Y, Ozdek A, Işik E, Korkmaz H. Self expandable polytetrafluoroethylene stent for carotid blowout syndrome. B-ENT 2012; 8:61-64. [PMID: 22545394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Carotid blowout syndrome (CBS) is an emergency complication in patients undergoing treatment for head and neck cancers. The classical management of CBS is the ligation of the common carotid artery, because suturing is not be possible due to infection and necrosis of the field. In this case report, we present a patient with CBS, in whom we applied a self-expandable polytetrafluoroethylene (PTFE) stent and observed no morbidity. Endovascular stent is a life-saving technique with minimum morbidity that preserves blood flow to the brain. We believe that this method is preferable to ligation of the artery in CBS.
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Affiliation(s)
- E C Tatar
- Ministry of Health, Department of Otolaryngology, Dişkapí Yildrim Beyazit Training and Research Hospital, Ankara, Turkey.
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Aktüre E, Salamat M, Korkmaz H, Başkaya M. Ganglioneuroma of the sphenoid wing: a case report and literature review. Clin Neuropathol 2011; 30:313-7. [PMID: 22011737 PMCID: PMC3663467 DOI: 10.5414/np300376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2011] [Accepted: 06/23/2011] [Indexed: 11/18/2022] Open
Abstract
Ganglioneuromas (GNs) are well-differentiated, slow-growing, benign tumors that are quite rare and usually found in the posterior mediastinum and retroperitoneum. They are composed of ganglion and Schwann cells and their origin remains in dispute. GNs have been reported as intraosseous lesions, such as in temporal and orbital bones. There are rare reports of intracranial lesions, mostly in the pituitary fossa. Most GN patients are children and are clinically asymptomatic. Diagnosis of GN requires histopathologic evaluation since no specific clinical or radiologic diagnostic features have been identified. We report the case of a 35-year-old man with recurrent sinusitis whose radiologic workup revealed a lytic right sphenoid wing lesion with microcalcifications. He underwent gross-total resection of the lesion and the pathologic findings were diagnostic of ganglioneuroma. To the best of our knowledge, this is the first reported case of sphenoid wing GN. The nature and origin of this tumor are discussed, and the GN literature is reviewed.
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Affiliation(s)
| | - M.S. Salamat
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA
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Grieb S, Korkmaz H, Reuter S, Bruch-Gerharz D, Reifenberger J, Schulte K, Kruse R. Tuberculosis cutis colliquativa. Hautarzt 2009; 60:272-5. [DOI: 10.1007/s00105-009-1739-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Aktug H, Candüz B, Mavioğlu Ö, Erkin Y, Yilmaz Ö, Uyanikgil Y, Korkmaz H, Baka M. 121. Epidural Lornoxicam Administration- Innocent. Reg Anesth Pain Med 2008. [DOI: 10.1136/rapm-00115550-200809001-00072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Gocer C, Eryilmaz A, Kayikci MEK, Korkmaz H, Surucu S, Akmansu SH. Functional and morphological effects of fotemustine on the auditory system of the rat. J Laryngol Otol 2007; 122:551-6. [PMID: 17888195 DOI: 10.1017/s0022215107000369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE This study aimed to elucidate the potential inner-ear effects of fotemustine, a chemotherapeutic agent which crosses the blood-brain barrier and is used in the treatment of primary and metastatic brain tumours and metastatic melanoma. METHODS This study utilised distortion product otoacoustic emissions and transmission electron microscopy in order to conduct electrophysiological and morphological assessments, using a rat experimental model. Twelve ears of six male rats were examined two months following intraperitoneal slow infusion of fotemustine (100 mg/m2 or 7.4 mg/kg). Pre- and post-treatment measurements were compared. Finally, electron microscopy was performed on three rat temporal bones. RESULTS After infusion of fotemustine, distortion product otoacoustic emissions revealed a significant reduction in signal-to-noise ratios only at 3600 Hz (from 11.95 +/- 7.52 to -0.26 +/- 9.45 dB) and at 3961 Hz (from 18.09 +/- 7.49 to 6.74 +/- 12.11 dB) (referenced to 2f1 - f2). Transmission electron microscopy of the temporal bone revealed ultrastructural changes in the outer hair cells, stria vascularis and cochlear ganglion at the cochlear basal turn. The ganglion cell perikarya were unaffected. CONCLUSIONS Fotemustine was administered via intraperitoneal slow infusion in a rat experimental model. Twelve ears of six survivors, from 10 rats, were evaluated at the second month. Fotemustine was determined to have a potential for ototoxicity at 3600 and 3961 Hz. Three randomly chosen rats underwent electron microscopy for morphological analysis. Morphological effects in the cochlear basal turn were observed. Oedematous intracytoplasmic spaces and perivascular areas of the stria vascularis, as well as distorted chromatin content, were detected, thereby suggesting potential ototoxic effects for this agent. Further experimental and clinical studies are required in order to determine whether the effect seen in this pilot study is reversible, and to analyse effects in humans.
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Affiliation(s)
- C Gocer
- Department of Otorhinolaryngology, Ankara Numune Hospital, Turkey.
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Affiliation(s)
- M N Unaldi
- Mustafa Kemal University, Faculty of Arts and Sciences, Department of Biology, 31040 Tayfur Sökmen-Hatay, Turkey
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Ozen T, Korkmaz H. Modulatory effect of Urtica dioica L. (Urticaceae) leaf extract on biotransformation enzyme systems, antioxidant enzymes, lactate dehydrogenase and lipid peroxidation in mice. Phytomedicine 2003; 10:405-415. [PMID: 12834006 DOI: 10.1078/0944-7113-00275] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The effects of two doses (50 and 100 mg/kg body wt given orally for 14 days) of an ethanol-water (80%-20%) extract of Urtica dioica L. and butylated hydroxyanisole (BHA) were investigated, for phase I and phase II enzymes, antioxidant enzymes, lactate dehydrogenase, lipid peroxidation and sulfhydryl groups in the liver of Swiss albino mice (8-9 weeks old). A modulatory effect of two doses and BHA was also observed for the activities of glutathione S-transferase, DT-diaphorase, superoxide dismutase and catalase in the kidney, lung and forestomach, as compared with the control group. The activities of cytochrome b5 (cyt b5), NADH-cytochrome b5 reductase (cyt b5 R), glutathione S-transferase (GST), DT-diaphorase (DTD), glutathione peroxidase (GPx), glutathione reductase (GR), superoxide dismutase (SOD) and catalase (CAT) showed a significant increase in the liver at both dose levels of extract. Both extract-treated showed significantly lower activity of cytochrome P450 (cyt P450), lactate dehydrogenase (LDH), NADPH-cytochrome P450 reductase (cyt P450 R), total sulfhydryl groups (T-SH), nonprotein sulfhydryl groups (NP-SH) and protein-bound sulfhydryl groups (PB-SH). BHA-treated Swiss albino mice showed a notable increase in levels of cyt b5, DTD, T-SH, PB-SH, GPx, GR, and SOD in the liver while, LDH, cyt P450, cyt P450 R, Cyt b5 R, GST, NP-SH, and CAT levels were reduced significantly as compared to control values. The extract was effective in inducing GST, DTD, SOD and CAT activity in the forestomach and SOD and CAT activity in the lung at both dose levels. BHA-treated Swiss albino mice induced DTD, GST and all antioxidative parameters in the kidney, lung and forestomach.
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Affiliation(s)
- T Ozen
- Ondokuz Mayis University, The Faculty of Arts and Sciences, Department of Chemistry, Kurupelit, Samsun-Turkey.
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Abstract
The hypoglycaemic effect of panicles of Artemisia santonicum L. in normal and alloxan-induced diabetic rabbits was investigated. Blood glucose levels were determined after oral administration of an aqueous extract of Artemisia santonicum L. In normal and diabetic rabbits, 2 mL/kg (0.42 g/kg) aqueous extract significantly (p < 0.01) reduced blood glucose levels 6 h after administration, which was consistent and time-dependent.
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Affiliation(s)
- H Korkmaz
- Department of Chemistry, Faculty of Sciences and Arts Ondokuz Mayis University, Kurupelit, 55139, Samsun, Turkey
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Abstract
OBJECTIVE To identify features of major salivary gland cancers that are prognostic for disease-free survival. STUDY DESIGN A retrospective study of 78 patients with major salivary gland cancer (64 parotid and 14 submandibular gland) who underwent surgery for definitive treatment from 1976 to 1996. A select group of patients also received adjuvant radiation (56%) and/or chemotherapy (13%). METHOD Clinical and pathological risk factors were obtained from patients' charts and pathology reports. Age, gender, tumor site, T-stage, facial paralysis, histologic neck involvement, perineural invasion, and cancer grade were analyzed with respect to disease-free survival. The role of adjuvant treatment in terms of clinical outcome was also investigated. RESULTS In our series, the 5-year disease-free survival was 65%. Examining clinical and histologic features one at a time, we found poorer prognosis was associated with submandibular tumors compared with parotid (P =.02), higher T-stage (P =.001), positive cervical nodes (P <.001), perineural invasion (P =.002), and high-grade or adenoid cystic tumors (P =.002). A multivariable analysis indicated that positive lymph nodes (P =.07) and perineural invasion (P =.03) were important histologic predictors of shorter disease-free survival. Receipt of both adjuvant radiation and cisplatin-based chemotherapy (P =.05) was an independent predictor of longer disease-free survival. CONCLUSION Our study indicated that the presence of positive lymph nodes and perineural invasion is important independent predictors of disease-free survival. Our limited data also suggest that adjuvant chemotherapy and radiation therapy may improve disease-free survival.
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Affiliation(s)
- E Hocwald
- Department of Otolaryngology-Head and Neck Surgery, Wayne State University, 540 East Canfield Avenue, Detroit, MI 48201, U.S.A
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Abstract
PURPOSE Management of the carotid artery involved with metastatic squamous cell carcinoma continues to be a topic of much discussion. Early reports, for the most part, focused on the sequel of ligation and the development of various tests to predict patient tolerance for the procedure. More recent alternatives have described resection reconstruction in multistage procedures. By using immediate reconstruction with autogenous arterial grafting, carotid artery resection can be accomplished in patients with radiation failure in a single stage. This technique can be used without the addition of myocutaneous flaps, controlled fistulas, or intracranial surgery advocated for usage with alternative techniques. PATIENTS AND METHODS Immediate reconstruction after resection of the carotid artery with superficial femoral arterial graft is described. RESULTS In a series of 18 high-risk patients with radiation failure, the artery was successfully resected and reconstructed in 1 stage without any neurologic or vascular complications. The technique has been associated with prolonged survival in selected patients. CONCLUSION Carotid artery resection and immediate reconstruction can be performed in high-risk radiation failure patients with acceptable complications, and is associated with prolonged survival in selected cases.
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Affiliation(s)
- J R Jacobs
- Wayne State University School of Medicine, Department of Otolaryngology Head and Neck Surgery, Detroit, MI 48201, USA
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Abstract
PURPOSE We designed a computerized tomography (CT)-based silastic implant preparation method that enabled custom fit to the individual size of the patient's larynx for medialization laryngoplasty. MATERIALS AND METHODS Three women with unilateral vocal cord paralysis underwent type I thyroplasty operation. The individual size of the patient's larynx was determined by preoperative measurements on CT scan and the implant was prepared accordingly. The implant was then inserted through a rectangular window at the level of vocal cords which had been outlined according to CT findings. RESULTS Three patients, who were age 41, 25, and 37 years, underwent medialization laryngoplasty by this technique. They were followed up for 37, 16, and 4 months, respectively. There was not any rejection reaction, and satisfactory functional results with 10, 7, and 9 seconds of phonation duration have been achieved, respectively. CONCLUSION In this technique, the desired medialization of the paralyzed vocal cord was accomplished by the first insertion of the implant. Thus, the duration of the operation and the vocal cord edema aroused by manipulation of the inner perichondrium and internal laryngeal structures were reduced.
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Affiliation(s)
- M A Safak
- Ear Nose Throat Clinic, Ministry of Health Ankara Hospital, Turkey
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