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Eksi YE, Bisgin A, Sanlioglu AD, Azizoglu RO, Balci MK, Griffith TS, Sanlioglu S. Generation of a Beta-Cell Transplant Animal Model of Diabetes Using CRISPR Technology. Adv Exp Med Biol 2023; 1409:145-159. [PMID: 36289162 DOI: 10.1007/5584_2022_746] [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: 11/07/2022]
Abstract
Since insulin deficiency results from pancreatic beta-cell destruction, all type 1 and most type 2 diabetes patients eventually require life-long insulin injections. Insulin gene synthesis could also be impaired due to insulin gene mutations as observed in diabetic patients with MODY 10. At this point, insulin gene therapy could be very effective to recompense insulin deficiency under these circumstances. For this reason, an HIV-based lentiviral vector carrying the insulin gene under the control of insulin promoter (LentiINS) was generated, and its therapeutic efficacy was tested in a beta-cell transplant model lacking insulin produced by CRISPR/Cas9-mediated genetically engineered pancreatic beta cells. To generate an insulin knockout beta-cell transplant animal model of diabetes, a dual gene knockout plasmid system involving CRISPR/Cas9 was transfected into a mouse pancreatic beta cell line (Min6). Fluorescence microscopy and antibiotic selection were utilized to select the insulin gene knockout clones. Transplantation of the genetically engineered pancreatic beta cells under the kidney capsule of STZ-induced diabetic rats revealed LentiINS- but not LentiLacZ-infected Ins2KO cells transiently reduced hyperglycemia similar to that of MIN6 in diabetic animals. These results suggest LentiINS has the potential to functionally restore insulin production in an insulin knockout beta-cell transplant animal model of diabetes.
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Affiliation(s)
- Yunus Emre Eksi
- Department of Gene and Cell Therapy, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Atil Bisgin
- Department of Medical Genetics, Cukurova University, Faculty of Medicine, Adana, Turkey
| | - Ahter D Sanlioglu
- Department of Gene and Cell Therapy, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Reha Onur Azizoglu
- Department of Gene and Cell Therapy, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Mustafa Kemal Balci
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Thomas S Griffith
- Department of Urology, University of Minnesota, School of Medicine, Minneapolis, MN, USA
| | - Salih Sanlioglu
- Department of Gene and Cell Therapy, Akdeniz University Faculty of Medicine, Antalya, Turkey.
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Konca Degertekin C, Gogas Yavuz D, Pekkolay Z, Saygili E, Ugur K, Or Koca A, Unubol M, Topaloglu O, Aydogan BI, Ozdemir Kutbay N, Hekimsoy Z, Yilmaz N, Balci MK, Tanrikulu S, Aydogan Unsal Y, Ersoy C, Omma T, Keskin M, Yalcin MM, Yetkin I, Soylu H, Karakose M, Yilmaz M, Karakilic E, Piskinpasa H, Batman A, Akbaba G, Elbuken G, Tura Bahadir C, Kilinc F, Bilginer MC, Turhan Iyidir O, Canturk Z, Aktas Yilmaz B, Sayiner ZA, Eroglu M. Identifying Clinical Characteristics of Hypoparathyroidism in Turkey: HIPOPARATURK-NET Study. Calcif Tissue Int 2022; 110:204-214. [PMID: 34495356 DOI: 10.1007/s00223-021-00908-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 05/31/2021] [Accepted: 08/20/2021] [Indexed: 12/19/2022]
Abstract
Hypoparathyroidism is an orphan disease with ill-defined epidemiology that is subject to geographic variability. We conducted this study to assess the demographics, etiologic distribution, treatment patterns and complication frequency of patients with chronic hypoparathyroidism in Turkey. This is a retrospective, cross-sectional database study, with collaboration of 30 endocrinology centers located in 20 cities across seven geographical regions of Turkey. A total of 830 adults (mean age 49.6 ± 13.5 years; female 81.2%) with hypoparathyroidism (mean duration 9.7 ± 9.0 years) were included in the final analysis. Hypoparathyroidism was predominantly surgery-induced (n = 686, 82.6%). The insulting surgeries was carried out mostly due to benign causes in postsurgical group (SG) (n = 504, 73.5%) while patients in nonsurgical group (NSG) was most frequently classified as idiopathic (n = 103, 71.5%). The treatment was highly dependent on calcium salts (n = 771, 92.9%), calcitriol (n = 786, 94.7%) and to a lower extent cholecalciferol use (n = 635, 76.5%) while the rate of parathyroid hormone (n = 2, 0.2%) use was low. Serum calcium levels were most frequently kept in the normal range (sCa 8.5-10.5 mg/dL, n = 383, 46.1%) which might be higher than desired for this patient group. NSG had a lower mean plasma PTH concentration (6.42 ± 5.53 vs. 9.09 ± 7.08 ng/l, p < 0.0001), higher daily intake of elementary calcium (2038 ± 1214 vs. 1846 ± 1355 mg/day, p = 0.0193) and calcitriol (0.78 ± 0.39 vs. 0.69 ± 0.38 mcg/day, p = 0.0057), a higher rate of chronic renal disease (9.7% vs. 3.6%, p = 0.0017), epilepsy (6.3% vs. 1.6%, p = 0.0009), intracranial calcifications (11.8% vs. 7.3%, p < 0.0001) and cataracts (22.2% vs. 13.7%, p = 0.0096) compared to SG. In conclusion, postsurgical hypoparathyroidism is the dominant etiology of hypoparathyroidism in Turkey while the nonsurgical patients have a higher disease burden with greater need for medications and increased risk of complications than the postsurgical patients.
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Affiliation(s)
- Ceyla Konca Degertekin
- Department of Endocrinology and Metabolism, Faculty of Medicine, Ufuk University, Ankara, Turkey.
- Endokrinoloji BD, Ufuk Üniversitesi Hastanesi, Mevlana Bulvarı (Konya Yolu) No:86-88 Balgat, Ankara, Turkey.
| | - Dilek Gogas Yavuz
- Department of Endocrinology and Metabolism, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - Zafer Pekkolay
- Department of Endocrinology and Metabolism, Faculty of Medicine, Dicle University, Diyarbakir, Turkey
| | - Emre Saygili
- Endocrinology and Metabolism Clinic, Canakkale Mehmet Akif Ersoy State Hospital, Canakkale, Turkey
| | - Kader Ugur
- Department of Endocrinology and Metabolism, Faculty of Medicine, Fırat University, Elazig, Turkey
| | - Arzu Or Koca
- Endocrinology and Metabolism Clinic, Kecioren Training and Research Hospital, Ankara, Turkey
| | - Mustafa Unubol
- Department of Endocrinology and Metabolism, Faculty of Medicine, Aydın Adnan Menderes University, Aydin, Turkey
| | - Omercan Topaloglu
- Endocrinology and Metabolism Clinic, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey
| | - Berna Imge Aydogan
- Endocrinology and Metabolism Clinic, Batman Training and Research Hospital, Batman, Turkey
| | - Nilufer Ozdemir Kutbay
- Department of Endocrinology and Metabolism, Faculty of Medicine, Manisa Celal Bayar University, Manisa, Turkey
| | - Zeliha Hekimsoy
- Department of Endocrinology and Metabolism, Faculty of Medicine, Manisa Celal Bayar University, Manisa, Turkey
| | - Nusret Yilmaz
- Department of Endocrinology and Metabolism, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Mustafa Kemal Balci
- Department of Endocrinology and Metabolism, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Seher Tanrikulu
- Endocrinology and Metabolism Clinic, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey
| | - Yasemin Aydogan Unsal
- Department of Endocrinology and Metabolism, Faculty of Medicine, Bursa Uludağ University, Bursa, Turkey
| | - Canan Ersoy
- Department of Endocrinology and Metabolism, Faculty of Medicine, Bursa Uludağ University, Bursa, Turkey
| | - Tulay Omma
- Endocrinology and Metabolism Clinic, Ankara Training and Research Hospital, Ankara, Turkey
| | - Muge Keskin
- Endocrinology and Metabolism Clinic, Ankara Numune Training and Research Hospital, Ankara, Turkey
| | - Mehmet Muhittin Yalcin
- Department of Endocrinology and Metabolism, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Ilhan Yetkin
- Department of Endocrinology and Metabolism, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Hikmet Soylu
- Department of Endocrinology and Metabolism, Faculty of Medicine, Kırsehir Ahi Evran University, Kirsehir, Turkey
| | - Melia Karakose
- Department of Endocrinology and Metabolism, Faculty of Medicine, Necmettin Erbakan University, Konya, Turkey
| | - Merve Yilmaz
- Endocrinology and Metabolism Clinic, Samsun Gazi Training and Research Hospital, Samsun, Turkey
| | - Ersen Karakilic
- Department of Endocrinology and Metabolism, Faculty of Medicine, Canakkale Onsekiz Mart University, Canakkale, Turkey
| | - Hamide Piskinpasa
- Endocrinology and Metabolism Clinic, Bakırkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey
| | - Adnan Batman
- Endocrinology and Metabolism Clinic, Istanbul Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey
| | - Gulhan Akbaba
- Department of Endocrinology and Metabolism, Faculty of Medicine, Mugla Sitki Kocman University, Mugla, Turkey
| | - Gulsah Elbuken
- Department of Endocrinology and Metabolism, Faculty of Medicine, Tekirdag Namık Kemal University, Tekirdag, Turkey
| | - Cigdem Tura Bahadir
- Department of Endocrinology and Metabolism, Faculty of Medicine, Amasya University, Amasya, Turkey
| | - Faruk Kilinc
- Department of Endocrinology and Metabolism, Faculty of Medicine, Fırat University, Elazig, Turkey
| | - Muhammet Cuneyt Bilginer
- Endocrinology and Metabolism Clinic, Trabzon Kanuni Training and Research Hospital, Trabzon, Turkey
| | - Ozlem Turhan Iyidir
- Department of Endocrinology and Metabolism, Faculty of Medicine, Baskent University, Ankara, Turkey
| | - Zeynep Canturk
- Department of Endocrinology and Metabolism, Faculty of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Banu Aktas Yilmaz
- Department of Endocrinology and Metabolism, Faculty of Medicine, Ufuk University, Ankara, Turkey
| | - Zeynel Abidin Sayiner
- Department of Endocrinology and Metabolism, Faculty of Medicine, Nigde University, Nigde, Turkey
| | - Mustafa Eroglu
- Department of Endocrinology and Metabolism, Faculty of Medicine, Balıkesir University, Balikesir, Turkey
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Doğruel H, Aydemir M, Balci MK. Management of diabetic foot ulcers and the challenging points: An endocrine view. World J Diabetes 2022; 13:27-36. [PMID: 35070057 PMCID: PMC8771264 DOI: 10.4239/wjd.v13.i1.27] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/18/2021] [Accepted: 12/11/2021] [Indexed: 02/06/2023] Open
Abstract
Diabetic foot ulcers (DFU) are one of the most challenging complications of diabetes. Up to one-third of patients with diabetes mellitus (DM) may suffer from DFUs during their life. DFU is one of the leading causes of morbidity in patients with DM. The treatment period is challenging, and the recurrence rate of DFUs is high. Hence, establishing prevention strategies is the most important point to be emphasized. A multidisciplinary approach is necessary in the prevention and treatment of DFUs. Patients at risk should be identified, and prevention measures should be taken based on the risk category. Once a DFU is formed, the appropriate classification and evidence-based treatment interventions should be executed. Glycemic control, diagnosis and treatment of vascular disease, local wound care, diagnosis, and treatment of infection should be addressed along with the proper evaluation and management of general health status.
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Affiliation(s)
- Hakan Doğruel
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Akdeniz University Hospital, Konyaaltı 07059, Antalya, Turkey
| | - Mustafa Aydemir
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Akdeniz University Hospital, Konyaaltı 07059, Antalya, Turkey
| | - Mustafa Kemal Balci
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Akdeniz University Faculty of Medicine, Konyaaltı 07059, Antalya, Turkey
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Yilmaz N, Cansu GB, Toru S, Sari R, Ocak GG, Arici C, Altunbas HA, Balci MK. Cytopathology-histopathology correlation and the effect of nodule diameter on diagnostic performance in patients undergoing thyroid fine-needle aspiration biopsy. J Cancer Res Ther 2021; 16:S53-S58. [PMID: 33380652 DOI: 10.4103/jcrt.jcrt_219_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Introduction Although thyroid fine-needle aspiration biopsy (FNAB) is established to have a good overall sensitivity and specificity, various outcomes have been reported on its performance in large nodules. The aim of the study was to evaluate the diagnostic performance of FNAB and the effect of the nodule diameter on its diagnostic performance. Materials and Methods The outcomes of a total of 7319 patients who underwent FNAB over the course of 5 years were analyzed retrospectively and 648 patients who had undergone post-FNAB thyroidectomy or lobectomy were included in the study. FNAB results were classified according to the Bethesda system. After evaluating the compatibility between cytology and pathology results, all-nodules and diameter-based (<4 cm and ≥4 cm) sensitivity, specificity, false positivity, false negativity, and accuracy rates of FNAB were calculated. Results Sensitivity of FNAB was 85.4% for all nodules, 88.3% for nodules <4 cm, and 75.8% for nodules >4 cm (P < 0.001). Specificity was 58.4% for all nodules, 49.3% for nodules <4 cm, and 75.1% for nodules >4cm (P < 0.001). While false positivity was 41.6% for all nodules, it was 50.7% for nodules smaller than 4 cm and was 24.9% for nodules larger than 4 cm (P < 0.001). False negativity was 14.6% for all nodules and was 11.7% for nodules smaller than 4 cm and 24.2% for nodules larger than 4 cm (P < 0.001). Finally, among the entire set of nodules, the accuracy was 64.4%, which was 59.2% in nodules smaller than 4 cm, and 75.2% in nodules larger than 4 cm (P < 0.001). Conclusion Despite a higher rate of false negativity, FNAB has higher specificity and accuracy in large nodules than those in the small nodules. Nodule diameter should not be used alone as a criterion to recommend thyroidectomy to the patient.
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Affiliation(s)
- Nusret Yilmaz
- Division of Endocrinology and Metabolism, School of Medicine, Akdeniz University, Antalya, Turkey
| | - Guven Baris Cansu
- Division of Endocrinology and Metabolism, Yunusemre State Hospital, Eskisehir, Turkey
| | - Serap Toru
- Department of Pathology, School of Medicine, Akdeniz University, Antalya, Turkey
| | - Ramazan Sari
- Division of Endocrinology and Metabolism, School of Medicine, Akdeniz University, Antalya, Turkey
| | - Guzide Gokhan Ocak
- Department of Pathology, School of Medicine, Akdeniz University, Antalya, Turkey
| | - Cumhur Arici
- Department of Surgery, School of Medicine, Akdeniz University, Antalya, Turkey
| | - Hasan Ali Altunbas
- Division of Endocrinology and Metabolism, School of Medicine, Akdeniz University, Antalya, Turkey
| | - Mustafa Kemal Balci
- Division of Endocrinology and Metabolism, School of Medicine, Akdeniz University, Antalya, Turkey
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Bayram F, Sonmez A, Haymana C, Sabuncu T, Dizdar OS, Gurkan E, Carlioglu AK, Agbaht K, Ozdemir D, Demirci I, Barcin C, Salman S, Tetiker T, Balci MK, Kebapci N, Ersoy C, Yumuk V, Toth PP, Satman I. Utilization of statins and LDL-cholesterol target attainment in Turkish patients with type 2 diabetes - a nationwide cross-sectional study (TEMD dyslipidemia study). Lipids Health Dis 2020; 19:237. [PMID: 33176832 PMCID: PMC7659134 DOI: 10.1186/s12944-020-01408-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/19/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Attaining acceptable levels of LDL Cholesterol (LDL-C) significantly improves cardiovascular (CV) outcomes in patients with type 2 diabetes mellitus (T2DM). The LDL-C target attainment and the characteristics of patients attaining these targets were investigated in this study. Furthermore, the reasons for not choosing statins and the physicians' attitudes on the treatment of diabetic dyslipidemia were also examined. METHODS A nationwide, cross-sectional survey was conducted in tertiary centers for diabetes management. Adult patients with T2DM, who were under follow-up for at least a year in outpatient clinics, were consecutively enrolled for the study. LDL-C goals were defined as below 70 mg/dL for patients with macrovascular complications or diabetic nephropathy, and below 100 mg/dL for other patients. Data about lipid-lowering medications were self-reported. RESULTS A total of 4504 patients (female: 58.6%) were enrolled for the study. The mean HbA1c and diabetes duration was 7.73 ± 1.74% and 10.9 ± 7.5 years, respectively. The need for statin treatment was 94.9% (n = 4262); however, only 42.4% (n = 1807) of these patients were under treatment, and only 24.8% (n = 448) of these patients achieved LDL-C targets. The main reason for statin discontinuation was negative media coverage (87.5%), while only a minority of patients (12.5%) mentioned side effects. Physicians initiated lipid-lowering therapy in only 20.3% of patients with high LDL-C levels. It was observed that the female gender was a significant independent predictor of not attaining LDL-C goals (OR: 0.70, 95% CI: 0.59-0.83). CONCLUSIONS Less than 50 % of patients with T2DM who need statins were under treatment, and only a quarter of them attained their LDL-C targets. There exists a significant gap between the guideline recommendations and the real-world evidence in the treatment of dyslipidemia in T2DM.
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Affiliation(s)
- Fahri Bayram
- Department of Endocrinology and Metabolism, Erciyes University, School of Medicine, Kayseri, Turkey
| | - Alper Sonmez
- Department of Endocrinology and Metabolism, University of Health Sciences, Gulhane School of Medicine, Ankara, Turkey
| | - Cem Haymana
- Department of Endocrinology and Metabolism, University of Health Sciences, Gulhane Training and Research Hospital, Ankara, Turkey.
| | - Tevfik Sabuncu
- Department of Endocrinology and Metabolism, Harran University, School of Medicine, Sanliurfa, Turkey
| | - Oguzhan Sitki Dizdar
- Department of Endocrinology and Metabolism, Kayseri Training and Research Hospital, Kayseri, Turkey
| | - Eren Gurkan
- Department of Endocrinology and Metabolism, Mustafa Kemal University, School of Medicine, Hatay, Turkey
| | - Ayse Kargili Carlioglu
- Department of Endocrinology and Metabolism, Erzurum Training and Research Hospital, Erzurum, Turkey
| | - Kemal Agbaht
- Department of Endocrinology and Metabolism, Private Defne Hospital, Hatay, Turkey
| | - Didem Ozdemir
- Department of Endocrinology and Metabolism, Yildirim Beyazit University, School of Medicine, Ankara, Turkey
| | - Ibrahim Demirci
- Department of Endocrinology and Metabolism, University of Health Sciences, Gulhane Training and Research Hospital, Ankara, Turkey
| | - Cem Barcin
- Department of Cardiology, University of Health Sciences, Gulhane School of Medicine, Ankara, Turkey
| | - Serpil Salman
- Department of Endocrinology and Metabolism, Private Liv Hospital, Istanbul, Turkey
| | - Tamer Tetiker
- Department of Endocrinology and Metabolism, Cukurova University, School of Medicine, Adana, Turkey
| | - Mustafa Kemal Balci
- Department of Endocrinology and Metabolism, Akdeniz University, School of Medicine, Antalya, Turkey
| | - Nur Kebapci
- Department of Endocrinology and Metabolism, Osmangazi University, School of Medicine, Eskisehir, Turkey
| | - Canan Ersoy
- Department of Endocrinology and Metabolism, Uludag University, School of Medicine, Bursa, Turkey
| | - Volkan Yumuk
- Department of Endocrinology and Metabolism, Istanbul University, Cerrahpasa School of Medicine, Istanbul, Turkey
| | - Peter P Toth
- Ciccarone Center for the Prevention of Cardiovascular Disease, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Preventive Cardiology, CGH Medical Center, Sterling, IL, USA
| | - Ilhan Satman
- Department of Endocrinology and Metabolism, Istanbul University, School of Medicine, Istanbul, Turkey
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Erendor F, Eksi YE, Sahin EO, Balci MK, Griffith TS, Sanlioglu S. Lentivirus Mediated Pancreatic Beta-Cell-Specific Insulin Gene Therapy for STZ-Induced Diabetes. Mol Ther 2020; 29:149-161. [PMID: 33130311 DOI: 10.1016/j.ymthe.2020.10.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 06/04/2020] [Revised: 08/31/2020] [Accepted: 10/23/2020] [Indexed: 02/07/2023] Open
Abstract
Autoimmune destruction of pancreatic beta cells is the characteristic feature of type 1 diabetes mellitus. Consequently, both short- and intermediate-acting insulin analogs are under development to compensate for the lack of endogenous insulin gene expression. Basal insulin is continuously released at low levels in response to hepatic glucose output, while post-prandial insulin is secreted in response to hyperglycemia following a meal. As an alternative to multiple daily injections of insulin, glucose-regulated insulin gene expression by gene therapy is under development to better endure postprandial glucose excursions. Controlled transcription and translation of proinsulin, presence of glucose-sensing machinery, prohormone convertase expression, and a regulated secretory pathway are the key features unique to pancreatic beta cells. To take advantage of these hallmarks, we generated a new lentiviral vector (LentiINS) with an insulin promoter driving expression of the proinsulin encoding cDNA to sustain pancreatic beta-cell-specific insulin gene expression. Intraperitoneal delivery of HIV-based LentiINS resulted in the lowering of fasting plasma glucose, improved glucose tolerance and prevented weight loss in streptozoticin (STZ)-induced diabetic Wistar rats. However, the combinatorial use of LentiINS and anti-inflammatory lentiviral vector (LentiVIP) gene therapy was required to increase serum insulin to a level sufficient to suppress non-fasting plasma glucose and diabetes-related inflammation.
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Affiliation(s)
- Fulya Erendor
- Department of Gene and Cell Therapy, Faculty of Medicine, Akdeniz University, Antalya 07058, Turkey
| | - Yunus Emre Eksi
- Department of Gene and Cell Therapy, Faculty of Medicine, Akdeniz University, Antalya 07058, Turkey
| | - Elif Ozgecan Sahin
- Department of Gene and Cell Therapy, Faculty of Medicine, Akdeniz University, Antalya 07058, Turkey
| | - Mustafa Kemal Balci
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Faculty of Medicine, Akdeniz University, Antalya 07058, Turkey
| | - Thomas S Griffith
- Department of Urology, School of Medicine, University of Minnesota, Minneapolis, MN 55455, USA
| | - Salih Sanlioglu
- Department of Gene and Cell Therapy, Faculty of Medicine, Akdeniz University, Antalya 07058, Turkey.
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Yilmaz N, Avsar E, Tazegul G, Sari R, Altunbas H, Balci MK. Clinical Characteristics and Follow-Up Results of Adrenal Incidentaloma. Exp Clin Endocrinol Diabetes 2020; 129:349-356. [PMID: 31958848 DOI: 10.1055/a-1079-4915] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 01/15/2023]
Abstract
It is recommended that adrenal incidentaloma patients should be monitored for radiological changes, increase in size and new functionality that may occur in the future, even if they are benign and nonfunctional at the initial evaluation. Our aim is to evaluate the key clinical characteristics of adrenal incidentaloma patients focusing on changes during follow-up and associated clinical outcomes. A total of 755 patients (median age: 56 years), with an adrenal incidentaloma > 1 cm and underwent functionality tests, were included in the study. Clinical characteristics, functionality status and follow-up durations were recorded. During the course of follow-up, any changes in size and development of new functionality, and clinical consequences thereof were evaluated. In 71.8% of patients, incidentalomas were non-functional. Most frequent functionality (15.8%, n=119) was subclinical hypercortisolemia (SH) [10.9% (n=82) possible autonomous cortisol secretion (PACS) and 4.9% (n=37) autonomous cortisol secretion (ACS)] of all incidentalomas. Frequencies of Cushing's syndrome (CS), pheochromacytoma and primary hyperaldosteronism were 4.9% (n=37), 3.8% (n=29) and 3.7% (n=28), respectively. Adrenocortical carcinoma frequency was 1.5% (n=11). Of 755 patients, 43% (n=325) were followed up regularly more than 6 months. Median follow-up duration was 24 months (6-120). A total of 17 (5.2%) patients, which had non-functional incidentalomas at baseline had developed new functionality during follow-up, of which 15 (4.6%) were SH [13 patients (4%) PACS and 2 patients (0.6%) ACS] and 2 (0.6%) were CS. During follow-up, 24% (n=78) of the patients had an increase in mass size between 5-9 mm, while 11.7% (n=38) of the patients had an increase of ≥10 mm. During follow-up, 4% (n=13) of the patients developed a new lesion with a diameter ≥10 mm on the opposite side. In patients with a follow-up duration of more than 2 years, frequencies of size increase and new lesion emerging at the opposite adrenal gland were higher. 14 patients (4.3% of the patients with regular follow-up) underwent surgery due to increase in size or development of new functionality during follow-up. Our study demonstrated that a necessity for surgery may arise due to increase in size and development of functionality during follow-up period in adrenal incidentaloma patients, and thus continuing patient follow-up, even with wider intervals, will be appropriate.
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Affiliation(s)
- Nusret Yilmaz
- Akdeniz University, School of Medicine, Department ofInternal Medicine, Division of Endocrinology andMetabolism, Antalya, Turkey
| | - Esin Avsar
- Akdeniz University, School of Medicine, Department ofInternal Medicine, Division of Endocrinology andMetabolism, Antalya, Turkey
| | - Gokhan Tazegul
- Akdeniz University, School of Medicine, Department ofInternal Medicine, Division of Endocrinology andMetabolism, Antalya, Turkey
| | - Ramazan Sari
- Akdeniz University, School of Medicine, Department ofInternal Medicine, Division of Endocrinology andMetabolism, Antalya, Turkey
| | - Hasan Altunbas
- Akdeniz University, School of Medicine, Department ofInternal Medicine, Division of Endocrinology andMetabolism, Antalya, Turkey
| | - Mustafa Kemal Balci
- Akdeniz University, School of Medicine, Department ofInternal Medicine, Division of Endocrinology andMetabolism, Antalya, Turkey
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Dogruel H, Balci MK. Development of therapeutic options on type 2 diabetes in years: Glucagon-like peptide-1 receptor agonist’s role intreatment; from the past to future. World J Diabetes 2019; 10:446-453. [PMID: 31523380 PMCID: PMC6715574 DOI: 10.4239/wjd.v10.i8.446] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 06/13/2019] [Accepted: 07/27/2019] [Indexed: 02/05/2023] Open
Abstract
Diabetes mellitus (DM) is a chronic metabolic disease characterized by hypergly-cemia. Type 2 diabetes (T2DM) accounting for 90% of cases globally. The worldwide prevalence of DM is rising dramatically over the last decades, from 30 million cases in 1985 to 382 million cases in 2013. It’s estimated that 451 million people had diabetes in 2017. As the pathophysiology was understood over the years, treatment options for diabetes increased. Incretin-based therapy is one of them. Glucagon-like peptide-1 receptor agonist (GLP-1 RA) not only significantly lower glucose level with minimal risk of hypoglycemia but also, they have an important advantage in themanagement of cardiovascular risk and obesity. Thus, we will review here GLP-1 RAsrole in the treatment of diabetes.
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Affiliation(s)
- Hakan Dogruel
- Department of Internal Medicine, Antalya Ataturk State Hospital, Antalya 07040, Turkey
| | - Mustafa Kemal Balci
- Akdeniz University Faculty of Medicine, Department of Internal Medicine, Division of Endocrinology and Metabolism, Antalya 07070, Turkey
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9
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Tazegul G, Bozoğlan H, Doğan Ö, Sari R, Altunbaş HA, Balci MK. Cystic lateral neck mass: Thyroid carcinoma metastasis to branchial cleft cyst. J Cancer Res Ther 2019; 14:1437-1438. [PMID: 30488872 DOI: 10.4103/0973-1482.188440] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Etiologies of lateral cervical masses are complex, most commonly these masses are branchial cleft cysts; however, metastatic thyroid carcinoma should be included in the differential. We report a case of lateral cystic neck mass in a 22-year-old female patient diagnosed as metastatic papillary thyroid carcinoma. The patient was diagnosed after she underwent surgery for branchial cleft cyst. The patient underwent thyroidectomy which revealed multifocal micropapillary thyroid carcinoma with capsular invasion and lymph node metastases. Radioactive iodine treatment was planned. Congenital malformations of the lateral neck may present themselves in the second and third decades of life. Ectopic thyroid tissue within a branchial cleft cyst may give rise to primary papillary carcinoma, as well as branchial cleft cyst may harbor metastases of primary thyroid papillary carcinoma. We classified our patient as a metastasis to the branchial cleft cyst rather than primary papillary carcinoma of the branchial cleft cyst.
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Affiliation(s)
- Gokhan Tazegul
- Department of Internal Medicine, Akdeniz University School of Medicine, Antalya, Turkey
| | - Hümeyra Bozoğlan
- Department of Endocrinology and Metabolism, Akdeniz University School of Medicine, Antalya, Turkey
| | - Özlem Doğan
- Department of Endocrinology and Metabolism, Akdeniz University School of Medicine, Antalya, Turkey
| | - Ramazan Sari
- Department of Endocrinology and Metabolism, Akdeniz University School of Medicine, Antalya, Turkey
| | - Hasan Ali Altunbaş
- Department of Endocrinology and Metabolism, Akdeniz University School of Medicine, Antalya, Turkey
| | - Mustafa Kemal Balci
- Department of Endocrinology and Metabolism, Akdeniz University School of Medicine, Antalya, Turkey
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10
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Boz A, Tazegul G, Bozoglan H, Dogan O, Sari R, Altunbas HA, Arici C, Ocak GA, Balci MK. Bone metastases without primary tumor: A well-differentiated follicular thyroid carcinoma case. J Cancer Res Ther 2018. [PMID: 29516937 DOI: 10.4103/0973-1482.199391] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Metastases to the bone are the most common malignant bone tumors. Prostate, breast, and lung carcinomas are the most common primaries of bone metastases. Bone metastases show poor prognosis in means of median survival; however, some patients with highly curable tumors such as thyroid carcinoma may benefit from treatment. We report and discuss a unique case of a 70-year-old female patient presenting with arm pain, diagnosed with metastatic well-differentiated follicular carcinoma without a primary tumor in the thyroid.
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Affiliation(s)
- Adil Boz
- Department of Nuclear Medicine, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Gokhan Tazegul
- Department of Internal Medicine, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Humeyra Bozoglan
- Department of Endocrinology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Ozlem Dogan
- Department of Endocrinology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Ramazan Sari
- Department of Endocrinology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Hasan Ali Altunbas
- Department of Endocrinology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Cumhur Arici
- Department of General Surgery, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Guzide Ayse Ocak
- Department of Pathology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - Mustafa Kemal Balci
- Department of Endocrinology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
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11
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Yilmaz N, Tazegul G, Bozoglan H, Sari R, Ozdem S, Altunbas HA, Balci MK. Diagnostic value of the late-night salivary cortisol in the diagnosis of clinical and subclinical Cushing’s syndrome: results of a single-center 7-year experience. J Investig Med 2018; 67:28-33. [DOI: 10.1136/jim-2018-000752] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 06/05/2018] [Accepted: 06/13/2018] [Indexed: 11/04/2022]
Abstract
Late-night salivary cortisol (LNSaC) is an easy-to-use test reflecting the free cortisol level in the serum and does not require hospitalization. Controlled studies reported that LNSaC has a high sensitivity and specificity, but have not set a clearly defined cut-off value to be used in the diagnosis of Cushing’s syndrome. In this study, we aimed to evaluate the diagnostic performance of LNSaC in patients with clinical Cushing’s syndrome (CCS) and subclinical Cushing’s syndrome (SCS). The data of 543 patients, whose LNSaC levels were assessed using electrochemiluminescence immunoassay method, were retrospectively evaluated. The study included a total of 324 patients: 58 patients with CCS, 53 patients with SCS, and 213 patients without Cushing’s syndrome (NoCS). The cause of the Cushing’s syndrome was hypophyseal in 26 patients (45%), adrenal in 24 patients (41%), and ectopic in 8 patients (14%) in the CCS group. Median LNSaC levels were 0.724 (0.107–33) µg/dL in CCS group, 0.398 (0.16–1.02) µg/dL in SCS group, and 0.18 (0.043–0.481) µg/dL in NoCS group (p=0.001). Accordingly, LNSaC had 89.6% sensitivity and 81.6% specificity at a cut-off value of 0.288 µg/dL in the diagnosis of CCS; and had 80.7% sensitivity and 85.1% specificity at a cut-off value of 0.273 µg/dL in the diagnosis of SCS. In the present study, a lower sensitivity and specificity than previously reported was found for LNSaC in the diagnosis of CCS. Moreover, the diagnostic performance of LNSaC in patients with SCS was close to its diagnostic performance in patients with CCS. Each center should determine its own cut-off value based on the method adopted for LNSaC measurement, and apply that cut-off value in the diagnosis of Cushing’s syndrome.
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12
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Tasyurek HM, Altunbas HA, Balci MK, Griffith TS, Sanlioglu S. Therapeutic Potential of Lentivirus-Mediated Glucagon-Like Peptide-1 Gene Therapy for Diabetes. Hum Gene Ther 2018; 29:802-815. [PMID: 29409356 DOI: 10.1089/hum.2017.180] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Postprandial glucose-induced insulin secretion from the islets of Langerhans is facilitated by glucagon-like peptide-1 (GLP-1)-a metabolic hormone with insulinotropic properties. Among the variety of effects it mediates, GLP-1 induces delta cell secretion of somatostatin, inhibits alpha cell release of glucagon, reduces gastric emptying, and slows food intake. These events collectively contribute to weight loss over time. During type 2 diabetes (T2DM), however, the incretin response to glucose is reduced and accompanied by a moderate reduction in GLP-1 secretion. To compensate for the reduced incretin effect, a human immunodeficiency virus-based lentiviral vector was generated to deliver DNA encoding human GLP-1 (LentiGLP-1), and the anti-diabetic efficacy of LentiGLP-1 was tested in a high-fat diet/streptozotocin-induced model of T2DM. Therapeutic administration of LentiGLP-1 reduced blood glucose levels in obese diabetic Sprague Dawley rats, along with improving insulin sensitivity and glucose tolerance. Normoglycemia was correlated with increased blood GLP-1 and pancreatic beta cell regeneration in LentiGLP-1-treated rats. Plasma triglyceride levels were also normalized after LentiGLP-1 injection. Collectively, these data suggest the clinical potential of GLP-1 gene transfer therapy for the treatment of T2DM.
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Affiliation(s)
- Hale M Tasyurek
- 1 Human Gene and Cell Therapy Center of Akdeniz University Hospitals , Antalya, Turkey
| | - Hasan Ali Altunbas
- 2 Department of Internal Medicine, Division of Endocrinology and Metabolism, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Mustafa Kemal Balci
- 2 Department of Internal Medicine, Division of Endocrinology and Metabolism, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Thomas S Griffith
- 3 Department of Urology, University of Minnesota , School of Medicine, Minneapolis, Minnesota
| | - Salih Sanlioglu
- 1 Human Gene and Cell Therapy Center of Akdeniz University Hospitals , Antalya, Turkey
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13
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Tazegul G, Ogut TS, Bozoglan H, Dogan O, Yilmaz N, Ulas T, Salim O, Sari R, Altunbas HA, Balci MK. Using plasma exchange to successfully manage thyrotoxicosis in a patient with possible antithyroid drug-related thrombotic thrombocytopenic purpura. Endocr Regul 2017; 51:153-156. [PMID: 28858843 DOI: 10.1515/enr-2017-0016] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Thrombotic thrombocytopenic purpura (TTP) is a rare disease characterized by microangiopathic hemolytic anemia, thrombocytopenic purpura, neurologic abnormalities, fever, and renal insufficiency. The association or co-existence of thyrotoxicosis or antithyroid drugs with TTP has not been previously reported. Subject and Results. Herein, we present a 54-year-old female patient newly diagnosed with toxic multinodular goiter accompanying with TTP, possibly triggered by either thyrotoxicosis or antithyroid drugs. CONCLUSIONS The present report is the first in the literature to demonstrate the co-existence of these two diseases and the use of plasma exchange as a modality to treat both conditions.
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14
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Gorgisen G, Balci MK, Celik FC, Gokkaya M, Ozdem S, Ozel D, Ozes ON. Differential actıvation and expression of insulin receptor substrate 1 (IRS1) in mononuclear cells of type 2 diabetes patients after insulin stimulation. Cell Mol Biol (Noisy-le-grand) 2016; 62:25-30. [PMID: 26950447] [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] [Received: 01/20/2016] [Accepted: 01/31/2016] [Indexed: 06/05/2023]
Abstract
Insulin regulates the glucose homeostasis by inducing tyrosine phosphorylation of insulin receptor substrate (IRS) proteins. IRS1 is the best studied member of this family and insulin-induced Tyrosine phosphorylation of (YXXM) motifs provides docking site for SH2 domain-containing proteins. Recent studies have suggested that genetic and/or environmental factors may affect the expression and phosphorylation levels of IRS1, and these could be important for development of insulin resistance. To shed light to the molecular basis of type 2 diabetes we wanted to determine whether YXXM motifs are genetically modified in these patients. We have isolated mononuclear cells of eighteen type 2 diabetes patients and prepared genomic DNA and protein lysates from these cells. The genomic DNA was used to sequence IRS1 gene, and protein lysates were used to determine the expression and phosphotyrosine levels of IRS1 after insulin stimulation. Although, we did not detect any mutations at/or near the YXXM coding regions in patients' DNA, immunprecipitation analysis of IRS1 indicated decreased levels of expression and tyrosine phosphorylation of IRS1 in patient's samples compared to that of healthy controls. Our results suggest that mononuclear cells of patients can be used to test the levels of insulin responsiveness before therapy.
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Affiliation(s)
- G Gorgisen
- Akdeniz University Medical School Department of Medical Biology and Genetics Antalya Turkey
| | - M K Balci
- Akdeniz University Medical School Department of Endocrinology Antalya Turkey
| | - F C Celik
- Akdeniz University Medical School Department of Endocrinology Antalya Turkey
| | - M Gokkaya
- Akdeniz University Medical School Department of Endocrinology Antalya Turkey
| | - S Ozdem
- Akdeniz University Medical School Department of Pharmacology Antalya Turkey
| | - D Ozel
- Akdeniz University Medical School Department of Biostatistics Antalya Turkey
| | - O N Ozes
- Akdeniz University Medical School Department of Medical Biology and Genetics Antalya Turkey
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15
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Hollander P, King AB, Del Prato S, Sreenan S, Balci MK, Muñoz-Torres M, Rosenstock J, Hansen CT, Niemeyer M, Garber AJ. Insulin degludec improves long-term glycaemic control similarly to insulin glargine but with fewer hypoglycaemic episodes in patients with advanced type 2 diabetes on basal-bolus insulin therapy. Diabetes Obes Metab 2015; 17:202-6. [PMID: 25387855 DOI: 10.1111/dom.12411] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [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: 08/07/2014] [Revised: 10/31/2014] [Accepted: 11/06/2014] [Indexed: 02/07/2023]
Abstract
The aim of the present study was to compare the long-term safety and efficacy of insulin degludec with those of insulin glargine in patients with advanced type 2 diabetes (T2D) over 78 weeks (the 52-week main trial and a 26-week extension). Patients were randomized to once-daily insulin degludec or insulin glargine, with mealtime insulin aspart ± metformin ± pioglitazone, and titrated to pre-breakfast plasma glucose values of 3.9-4.9 mmol/l (70-88 mg/dl). After 78 weeks, the overall rate of hypoglycaemia was 24% lower (p = 0.011) and the rate of nocturnal hypoglycaemia was 31% lower (p = 0.016) with insulin degludec in the extension trial set, while both groups of patients achieved similar glycaemic control. Rates of adverse events and total insulin doses were similar for both groups in the safety analysis set. During 18 months of treatment, insulin degludec + mealtime insulin aspart ± oral antidiabetic drugs in patients with T2D improves glycaemic control similarly, but confers lower risks of overall and nocturnal hypoglycaemia than with insulin glargine treatment.
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Affiliation(s)
- P Hollander
- Baylor University Medical Center, Dallas, TX, USA
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16
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Tasyurek HM, Altunbas HA, Balci MK, Sanlioglu S. Incretins: their physiology and application in the treatment of diabetes mellitus. Diabetes Metab Res Rev 2014; 30:354-71. [PMID: 24989141 DOI: 10.1002/dmrr.2501] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 11/06/2013] [Accepted: 11/12/2013] [Indexed: 12/18/2022]
Abstract
Therapies targeting the action of incretin hormones have been under close scrutiny in recent years. The incretin effect has been defined as postprandial enhancement of insulin secretion by gut-derived factors. Likewise, incretin mimetics and incretin effect amplifiers are the two different incretin-based treatment strategies developed for the treatment of diabetes. Although, incretin mimetics produce effects very similar to those of natural incretin hormones, incretin effect amplifiers act by inhibiting dipeptidyl peptidase-4 (DPP-4) enzyme to increase plasma concentration of incretins and their biologic effects. Because glucagon-like peptide-1 (GLP-1) is an incretin hormone with various anti-diabetic actions including stimulation of glucose-induced insulin secretion, inhibition of glucagon secretion, hepatic glucose production and gastric emptying, it has been evaluated as a novel therapeutic agent for the treatment of type 2 diabetes mellitus (T2DM). GLP-1 also manifests trophic effects on pancreas such as pancreatic beta cell growth and differentiation. Because DPP-4 is the enzyme responsible for the inactivation of GLP-1, DPP-4 inhibition represents another potential strategy to increase plasma concentration of GLP-1 to enhance the incretin effect. Thus, anti-diabetic properties of these two classes of drugs have stimulated substantial clinical interest in the potential of incretin-based therapeutic agents as a means to control glucose homeostasis in T2DM patients. Despite this fact, clinical use of GLP-1 mimetics and DPP-4 inhibitors have raised substantial concerns owing to possible side effects of the treatments involving increased risk for pancreatitis, and C-cell adenoma/carcinoma. Thus, controversial issues in incretin-based therapies under development are reviewed and discussed in this manuscript.
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Abstract
Diabetes is a pandemic disease characterized by autoimmune, genetic and metabolic abnormalities. While insulin deficiency manifested as hyperglycemia is a common sequel of both Type-1 and Type-2 diabetes (T1DM and T2DM), it does not result from a single genetic defect--rather insulin deficiency results from the functional loss of pancreatic β cells due to multifactorial mechanisms. Since pancreatic β cells of patients with T1DM are destroyed by autoimmune reaction, these patients require daily insulin injections. Insulin resistance followed by β cell dysfunction and β cell loss is the characteristics of T2DM. Therefore, most patients with T2DM will require insulin treatment due to eventual loss of insulin secretion. Despite the evidence of early insulin treatment lowering macrovascular (coronary artery disease, peripheral arterial disease and stroke) and microvascular (diabetic nephropathy, neuropathy and retinopathy) complications of T2DM, controversy exists among physicians on how to initiate and intensify insulin therapy. The slow acting nature of regular human insulin makes its use ineffective in counteracting postprandial hyperglycemia. Instead, recombinant insulin analogs have been generated with a variable degree of specificity and action. Due to the metabolic variability among individuals, optimum blood glucose management is a formidable task to accomplish despite the presence of novel insulin analogs. In this article, we present a recent update on insulin analog structure and function with an overview of the evidence on the various insulin regimens clinically used to treat diabetes.
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MESH Headings
- Animals
- Diabetes Mellitus, Type 1/blood
- Diabetes Mellitus, Type 1/complications
- Diabetes Mellitus, Type 1/drug therapy
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/metabolism
- Diabetic Angiopathies/prevention & control
- Drug Monitoring
- Evidence-Based Medicine
- Humans
- Hyperglycemia/prevention & control
- Hypoglycemic Agents/administration & dosage
- Hypoglycemic Agents/chemistry
- Hypoglycemic Agents/metabolism
- Hypoglycemic Agents/therapeutic use
- Insulin/administration & dosage
- Insulin/analogs & derivatives
- Insulin/metabolism
- Insulin/therapeutic use
- Insulin, Regular, Human/administration & dosage
- Insulin, Regular, Human/analogs & derivatives
- Insulin, Regular, Human/genetics
- Insulin, Regular, Human/therapeutic use
- Recombinant Proteins/administration & dosage
- Recombinant Proteins/chemistry
- Recombinant Proteins/therapeutic use
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Affiliation(s)
- Ahter D. Sanlioglu
- Human Gene and Cell Therapy Center; Akdeniz University Faculty of Medicine; Antalya, Turkey
- Department of Medical Biology and Genetics; Akdeniz University Faculty of Medicine; Antalya, Turkey
| | - Hasan Ali Altunbas
- Human Gene and Cell Therapy Center; Akdeniz University Faculty of Medicine; Antalya, Turkey
- Department of Internal Medicine; Division of Endocrinology and Metabolism; Akdeniz University Faculty of Medicine; Antalya, Turkey
| | - Mustafa Kemal Balci
- Human Gene and Cell Therapy Center; Akdeniz University Faculty of Medicine; Antalya, Turkey
- Department of Internal Medicine; Division of Endocrinology and Metabolism; Akdeniz University Faculty of Medicine; Antalya, Turkey
| | | | - Salih Sanlioglu
- Human Gene and Cell Therapy Center; Akdeniz University Faculty of Medicine; Antalya, Turkey
- Department of Medical Biology and Genetics; Akdeniz University Faculty of Medicine; Antalya, Turkey
- Correspondence to: Salih Sanlioglu,
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Abstract
Type 2 diabetes (T2D) is characterized by chronic insulin resistance and a progressive decline in beta-cell function. Although rigorous glucose control can reduce morbidity and mortality associated with diabetes, achieving optimal long-term glycemic control remains to be accomplished in many diabetic patients. As beta-cell mass and function inevitably decline in T2D, exogenous insulin administration is almost unavoidable as a final outcome despite the use of oral antihyperglycemic agents in many diabetic patients. Pancreatic islet cell death, but not the defect in new islet formation or beta-cell replication, has been blamed for the decrease in beta-cell mass observed in T2D patients. Thus, therapeutic approaches designed to protect islet cells from apoptosis could significantly improve the management of T2D, because of its potential to reverse diabetes not just ameliorate glycemia. Therefore, an ideal beta-cell-preserving agent is expected to protect beta cells from apoptosis and stimulate postprandial insulin secretion along with increasing beta-cell replication and/or islet neogenesis. One such potential agent, the islet endocrine neuropeptide vasoactive intestinal peptide (VIP) strongly stimulates postprandial insulin secretion. Because of its broad spectrum of biological functions such as acting as a potent anti-inflammatory factor through suppression of Th1 immune response, and induction of immune tolerance via regulatory T cells, VIP has emerged as a promising therapeutic agent for the treatment of many autoimmune diseases including diabetes.
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Affiliation(s)
- Ahter D Sanlioglu
- Human Gene and Cell Therapy Center, Akdeniz University Hospitals and Clinics, B Block, 1st floor, Campus, Antalya 07058, Turkey
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Dirice E, Kahraman S, Elpek GO, Aydin C, Balci MK, Omer A, Sanlioglu S, Sanlioglu AD. TRAIL and DcR1 expressions are differentially regulated in the pancreatic islets of STZ- versus CY-applied NOD mice. Exp Diabetes Res 2011; 2011:625813. [PMID: 22144989 PMCID: PMC3226359 DOI: 10.1155/2011/625813] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2011] [Revised: 08/26/2011] [Accepted: 08/27/2011] [Indexed: 02/08/2023]
Abstract
TNF-related apoptosis-inducing ligand (TRAIL) is an important component of the immune system. Although it is well acknowledged that it also has an important role in Type 1 Diabetes (T1D) development, this presumed role has not yet been clearly revealed. Streptozotocin (STZ) and Cyclophosphamide (CY) are frequently used agents for establishment or acceleration of T1D disease in experimental models, including the non-obese diabetic (NOD) mice. Although such disease models are very suitable for diabetes research, different expression patterns for various T1D-related molecules may be expected, depending on the action mechanism of the applied agent. We accelerated diabetes in female NOD mice using STZ or CY and analyzed the expression profiles of TRAIL ligand and receptors throughout disease development. TRAIL ligand expression followed a completely different pattern in STZ- versus CY-accelerated disease, displaying a prominent increase in the former, while appearing at reduced levels in the latter. Decoy receptor 1 (DcR1) expression also increased significantly in the pancreatic islets in STZ-induced disease. Specific increases observed in TRAIL ligand and DcR1 expressions may be part of a defensive strategy of the beta islets against the infiltrating leukocytes, while the immune-suppressive agent CY may partly hold down this defense, contributing further to diabetes development.
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Affiliation(s)
- Ercument Dirice
- 1Section of Islet Cell and Regenerative Medicine, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA
- 2Human Gene and Cell Therapy Center of Akdeniz University Hospitals and Clinics, 07058 Antalya, Turkey
| | - Sevim Kahraman
- 2Human Gene and Cell Therapy Center of Akdeniz University Hospitals and Clinics, 07058 Antalya, Turkey
- 3Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, 07058 Antalya, Turkey
| | - Gulsum Ozlem Elpek
- 4Department of Pathology, Faculty of Medicine, Akdeniz University, 07058 Antalya, Turkey
| | - Cigdem Aydin
- 2Human Gene and Cell Therapy Center of Akdeniz University Hospitals and Clinics, 07058 Antalya, Turkey
- 3Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, 07058 Antalya, Turkey
| | - Mustafa Kemal Balci
- 5Division of Endocrinology and Metabolic Diseases, Faculty of Medicine, Akdeniz University, 07058 Antalya, Turkey
| | - Abdulkadir Omer
- 6Division of Endocrinology and Diabetes, Department of Medicine, University of Massachusetts, Worcester, MA 01545, USA
| | - Salih Sanlioglu
- 2Human Gene and Cell Therapy Center of Akdeniz University Hospitals and Clinics, 07058 Antalya, Turkey
- 3Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, 07058 Antalya, Turkey
| | - Ahter Dilsad Sanlioglu
- 2Human Gene and Cell Therapy Center of Akdeniz University Hospitals and Clinics, 07058 Antalya, Turkey
- 3Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, 07058 Antalya, Turkey
- *Ahter Dilsad Sanlioglu:
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Sari R, Balci MK, Apaydin C. The Relationship Between Plasma Leptin Levels and Chronic Complication in Patients with Type 2 Diabetes Mellitus. Metab Syndr Relat Disord 2010; 8:499-503. [DOI: 10.1089/met.2009.0127] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ramazan Sari
- Division of Endocrinology and Metabolism, Akdeniz University, School of Medicine, Antalya, Turkey
| | - Mustafa Kemal Balci
- Division of Endocrinology and Metabolism, Akdeniz University, School of Medicine, Antalya, Turkey
| | - Cemil Apaydin
- Division of Ophthalmology, Akdeniz University, School of Medicine, Antalya, Turkey
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21
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Unluhizarci K, Kula M, Dundar M, Tanriverdi F, Israel S, Colak R, Dokmetas HS, Atmaca H, Bahceci M, Balci MK, Comlekci A, Bilen H, Akarsu E, Erem C, Kelestimur F. The prevalence of non-classic adrenal hyperplasia among Turkish women with hyperandrogenism. Gynecol Endocrinol 2010; 26:139-43. [PMID: 19718570 DOI: 10.3109/09513590903215466] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [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: 01/03/2023] Open
Abstract
The prevalence of non-classic adrenal hyperplasia (NCAH) among Turkish women with hirsutism has not been established so far. Thus, we aimed to evaluate the prevalence of 21-hydroxylase (21-OH) deficiency by ACTH stimulation test among hirsute women. The study population consisted of 285 premenopousal women, aged 16-46 years (mean: 23.2 ± 0.3). All were hirsute and hyperandrogenic. Androgen secreting tumors of the ovaries and the adrenal glands were excluded as well as thyroid dysfunction and hyperprolactinemia. All the patients were evaluated by 0.25 mg (i.v.) ACTH stimulation test and 17-OHP responses were obtained at 30 and 60 min. The diagnosis of NCAH due to 21-OH deficiency was considered in patients with the poststimulation 17-OHP level exceed 10 ng/ml. Six (2.1%) of the patients had NCAH due to 21-OH deficiency confirmed by genotyping. The rest of the patients were polycystic ovary syndrome (n = 166, 58.2%) and idiopathic hyperandrogenemia (n = 113, 39.7%). There were no patients with idiopathic hirsutism because patients with normal serum androgen levels were excluded. This first and most extensive national study investigating NCAH prevalence among Turkish population showed that NCAH is not prevalent in this population.
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Affiliation(s)
- Kursad Unluhizarci
- Department of Endocrinology, Erciyes University Medical School, Kayseri, Turkey
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Dirice E, Sanlioglu AD, Kahraman S, Ozturk S, Balci MK, Omer A, Griffith TS, Sanlioglu S. Adenovirus-Mediated TRAIL Gene (Ad5hTRAIL) Delivery into Pancreatic Islets Prolongs Normoglycemia in Streptozotocin-Induced Diabetic Rats. Hum Gene Ther 2009; 20:1177-89. [DOI: 10.1089/hum.2009.039] [Citation(s) in RCA: 26] [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] [Indexed: 12/18/2022] Open
Affiliation(s)
- Ercument Dirice
- Human Gene Therapy Division, Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Ahter Dilsad Sanlioglu
- Human Gene Therapy Division, Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Sevim Kahraman
- Human Gene Therapy Division, Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Saffet Ozturk
- Department of Histology and Embryology, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Mustafa Kemal Balci
- Division of Endocrinology and Metabolic Diseases, Department of Medicine, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Abdulkadir Omer
- Section on Islet Transplantation and Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, U.S.A
| | | | - Salih Sanlioglu
- Human Gene Therapy Division, Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
- Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
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Affiliation(s)
- Hilal Kocabas
- Department of Physical Medicine and Rehabilitation, School of Medicine, Akdeniz University, Antalya, Turkey
| | | | - Nehir Samanci Karaman
- Department of Physical Medicine and Rehabilitation, School of Medicine, Akdeniz University, Antalya, Turkey
| | - Nilufer Vedin Balci
- Department of Physical Medicine and Rehabilitation, School of Medicine, Akdeniz University, Antalya, Turkey
| | - Mustafa Kemal Balci
- Department of Physical Medicine and Rehabilitation, School of Medicine, Akdeniz University, Antalya, Turkey
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Sanlioglu AD, Dirice E, Elpek O, Korcum AF, Ozdogan M, Suleymanlar I, Balci MK, Griffith TS, Sanlioglu S. High TRAIL death receptor 4 and decoy receptor 2 expression correlates with significant cell death in pancreatic ductal adenocarcinoma patients. Pancreas 2009; 38:154-60. [PMID: 18981952 DOI: 10.1097/mpa.0b013e31818db9e3] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [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: 02/05/2023]
Abstract
OBJECTIVES The importance of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) and TRAIL receptor expression in pancreatic carcinoma development is not known. To reveal the putative connection of TRAIL and TRAIL receptor expression profile to this process, we analyzed and compared the expression profile of TRAIL and its receptors in pancreatic tissues of both noncancer patients and patients with pancreatic ductal adenocarcinoma (PDAC). METHODS Thirty-one noncancer patients and 34 PDAC patients were included in the study. TRAIL and TRAIL receptor expression profiles were determined by immunohistochemistry. Annexin V binding revealed the apoptotic index in pancreas. Lastly, the tumor grade, tumor stage, tumor diameter, perineural invasion, and number of lymph node metastasis were used for comparison purposes. RESULTS TRAIL decoy receptor 2 (DcR2) and death receptor 4 expression were up-regulated in PDAC patients compared with noncancer patients, and the ductal cells of PDAC patients displayed significant levels of apoptosis. In addition, acinar cells from PDAC patients had higher DcR2 expression but lower death receptor 4 expression. Increased DcR2 expression was also observed in Langerhans islets of PDAC patients. CONCLUSIONS Differential alteration of TRAIL and TRAIL receptor expression profiles in PDAC patients suggest that the TRAIL/TRAIL receptor system may play a pivotal role during pancreatic carcinoma development.
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Affiliation(s)
- Ahter Dilsad Sanlioglu
- Department of Medical Biology and Genetics, Faculty of Medicine, Human Gene Therapy Unit, Akdeniz University, Antalya, Turkey.
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Sanlioglu AD, Griffith TS, Omer A, Dirice E, Sari R, Altunbas HA, Balci MK, Sanlioglu S. Molecular mechanisms of death ligand-mediated immune modulation: a gene therapy model to prolong islet survival in type 1 diabetes. J Cell Biochem 2008; 104:710-20. [PMID: 18247339 DOI: 10.1002/jcb.21677] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Type 1 diabetes results from the T cell-mediated destruction of pancreatic beta cells. Islet transplantation has recently become a potential therapeutic approach for patients with type 1 diabetes. However, islet-graft failure appears to be a challenging issue to overcome. Thus, complementary gene therapy strategies are needed to improve the islet-graft survival following transplantation. Immune modulation through gene therapy represents a novel way of attacking cytotoxic T cells targeting pancreatic islets. Various death ligands of the TNF family such as FasL, TNF, and TNF-Related Apoptosis-Inducing Ligand (TRAIL) have been studied for this purpose. The over-expression of TNF or FasL in pancreatic islets exacerbates the onset of type 1 diabetes generating lymphocyte infiltrates responsible for the inflammation. Conversely, the lack of TRAIL expression results in higher degree of islet inflammation in the pancreas. In addition, blocking of TRAIL function using soluble TRAIL receptors facilitates the onset of diabetes. These results suggested that contrary to what was observed with TNF or FasL, adenovirus mediated TRAIL gene delivery into pancreatic islets is expected to be therapeutically beneficial in the setting of experimental models of type 1 diabetes. In conclusion; this study mainly reveals the fundamental principles of death ligand-mediated immune evasion in diabetes mellitus.
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Affiliation(s)
- Ahter Dilsad Sanlioglu
- Human Gene Therapy Unit and the Department of Medical Biology and Genetics, Akdeniz University, Faculty of Medicine, 07070 Antalya, Turkey
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26
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Sanlioglu AD, Dirice E, Elpek O, Korcum AF, Balci MK, Omer A, Griffith TS, Sanlioglu S. High levels of endogenous tumor necrosis factor-related apoptosis-inducing ligand expression correlate with increased cell death in human pancreas. Pancreas 2008; 36:385-93. [PMID: 18437085 DOI: 10.1097/mpa.0b013e318158a4e5] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [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: 02/05/2023]
Abstract
OBJECTIVES Type 1 diabetes (T1D) has been characterized by the T cell-mediated destruction of pancreatic beta cells. Although various members of the tumor necrosis factor (TNF) family, such as Fas ligand or TNF, have recently been implicated in the development of T1D, the lack of TNF-related apoptosis-inducing ligand (TRAIL) expression or function facilitates the onset of T1D. Thus, the goal of the present study was to investigate the expression profiles of TRAIL and its receptors in human pancreas. METHODS Pancreata of 31 patients were analyzed by immunohistochemistry using antibodies developed against TRAIL and its receptors. Apoptosis was confirmed by Annexin V-fluorescein isothiocyanate binding and terminal deoxynucleotidyl transferase-mediated 2'-deoxyuridine 5'-triphosphate nick end labeling assays. RESULTS Acinar cells displayed high levels of TRAIL and death receptor 4, but only low levels of death receptor 5. In contrast, only TRAIL and TRAIL decoy receptors (DcR1, DcR2) were detected in ductal cells. Similarly, Langerhans islets expressed only TRAIL and TRAIL decoy receptor. High levels of TRAIL expression in pancreas correlated with increased number of apoptotic cells. CONCLUSIONS Although the expression of TRAIL decoy receptors might be necessary for defense from TRAIL-induced apoptosis, high levels of TRAIL may provide protection for Langerhans islets from the immunological attack of cytotoxic T cells.
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Affiliation(s)
- Ahter Dilsad Sanlioglu
- Human Gene Therapy Unit, Departments of Medical Biology and Genetics, Akdeniz University, Faculty of Medicine, Antalya, Turkey.
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Abstract
UNLABELLED Obese individuals are frequently hyperleptinemic and insulin resistant. Chronic exercise is associated with improvements in plasma leptin level and insulin sensitivity; however, little is known about the acute effect of exercise on these parameters. The aim of this study was to evaluate the acute effect of aerobic exercise on plasma leptin and insulin sensitivity in obese women with stable caloric intake. PATIENTS AND METHODS Twenty-three obese women (age 41.2 +/- 10.3 years, body mass index 40.7 +/- 6.7 kg/m2) were included to the study. All subjects were admitted to an exercise program (45-minute walking sessions at 60-80% of maximum heart rate) every day except weekends for four weeks (total 20 exercise sessions). Insulin resistance was evaluated by HOMA model. Plasma glucose, insulin and leptin levels were determined at baseline and at the end of the first, seventh, and twentieth exercise session. RESULTS Baseline and at the end of the first, seventh, and twentieth exercise session plasma leptin levels were 59.1 +/- 20.1, 58.5 +/- 21.0, 53.4 +/- 21.9, and 51.2 +/- 20.5 ng/ml and HOMA-r were 2.75 +/- 1.47, 1.77 +/- 0.71, 1.73 +/- 0.89, 1.62 +/- 0. 70, respectively. Compared to baseline, at the end of the seventh (p = 0.021) and twentieth exercise session (p = 0.003), plasma leptin levels were significantly low. Plasma leptin level did not change significantly at the end of the first exercise session (p > 0.05). At the end of the first exercise session (p = 0.005), end of the seventh (p = 0.003) and twentieth exercise session (p = 0.007) HOMA-r was lower than baseline. There was no correlation between weight loss during exercise period and the change of leptin, and HOMA-r. Fasting plasma glucose, insulin and leptin levels were determined at baseline and at the end of the first, seventh, and twentieth exercise session. CONCLUSION Our study suggests that acute exercise decreases insulin resistance at the first exercise session with no effect on leptin levels. Significant leptin decrement was evident at the first week and lasted during the entire four weeks exercise session.
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Affiliation(s)
- Ramazan Sari
- Division of Endocrinology and Metabolism, Akdeniz University, School of Medicine, Antalya, Turkey.
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Cakir M, Arici C, Alakus H, Altunbas H, Balci MK, Karayalcin U. Incidental Thyroid Carcinoma in Thyrotoxic Patients Treated by Surgery. Horm Res Paediatr 2006; 67:96-9. [PMID: 17047344 DOI: 10.1159/000096357] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [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] [Received: 06/02/2006] [Accepted: 08/25/2006] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND AND AIMS Thyroid malignancy detected incidentally in patients who are operated for thyrotoxicosis has been reported at different rates. The aim of this study was to investigate the rate of incidental thyroid carcinoma in thyrotoxic patients managed with surgery in our institution. METHODS Of the 375 thyrotoxic patients who had thyroid surgery between the years of 1997-2004, 70.7% were females and 29.3% were males. Among thyrotoxic patients 65.3% (n=245) had toxic multinodular goiter (TMG), 16.8% (n=63) had toxic adenoma (TA) and 17.9% (n=67) had Graves' disease. RESULTS Twenty-six (6.9%) of all thyrotoxic patients had thyroid carcinoma. Eighteen (7.3%) of TMG, 4 (6.3%) of TA and 4 (6%) of Graves' disease patients had thyroid carcinoma. Histologic examination revealed 18 papillary (9 microscopic), 5 follicular, 2 hurthle cell and 1 anaplastic carcinoma. CONCLUSION In our study, incidental thyroid carcinoma was found in 6.9% of subjects with thyrotoxicosis. Papillary thyroid microcarcinomas constituted 34.6% (26/9) of these newly diagnosed thyroid carcinomas. The incidence of thyroid carcinoma was not higher in subjects with Graves' disease compared to TMG and TA. The rate of incidental thyroid carcinoma in subjects with thyrotoxicosis treated with surgery was similar to previous studies reported from different countries.
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Affiliation(s)
- Mehtap Cakir
- Division of Endocrinology and Metabolism, Department of General Surgery, School of Medicine, Akdeniz University, Antalya, Turkey.
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Sari R, Balci MK. Relationship between weight loss and gallbladder motility in obese women. J Natl Med Assoc 2006; 98:1670-6. [PMID: 17052060 PMCID: PMC2569754] [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: 05/12/2023]
Abstract
OBJECTIVE AND AIM Most studies have detected impairment of gallbladder motility among obese compared with nonobese people. However, the relationship between gallbladder motility and weight loss is not well defined. The aim of this study was to evaluate the relationship between percent of weight loss and gallbladder motility during weight-reducing programs in obese women. PATIENTS AND METHODS Thirty-four premenopausal obese women (body mass index >30 kg/m2) were included in the study. Following an overnight fast, fasting and postprandial 15-, 30-, 45-, 60-, 75-, 90-, 120- and 150th-minute gallbladder volumes and ejection fractions were evaluated with real-time ultrasonography as baseline and repeated after sixth months of weight-reducing programs. The lowest postprandial gallbladder volume was accepted as the residual volume. Gallstone formation was found in three (8.8%) patients during the study period, and these patients were dropped out. Thirty-one obese women were divided into three groups based on weight loss percent (group 1: 11 patients, weight loss <5%; group 2: 10 patients, weight loss 5-10%; group 3: 10 patients, weight loss >10%). RESULTS Fasting gallbladder volume and all ejection fractions were not significantly different between baseline and after sixth months in all groups (p>0.05). Residual volume was decreased after sixth months in only group 3 (p=0.005). Difference of fasting and residual volumes, and ejection fractions at baseline and after sixth months was similar in all groups (p>0.05). There was a positive correlation between weight loss and the change of residual volume (r=0.395, p=0.028). CONCLUSION Our findings suggest no relationship between degree of weight loss and ejection fraction. However, decreased residual volume and late-phase gallbladder volumes indicate gallbladder motility changing in patients who had >10% weight loss.
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Affiliation(s)
- Ramazan Sari
- Department of Internal Medicine, Division of Endocrinology, School of Medicine, Akdeniz University, Antalya, Turkey.
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Erdogan MF, Gürsoy A, Ozgen G, Cakir M, Bayram F, Ersoy R, Algün E, Cetinarslan B, Cömlekçi A, Kadioglu P, Balci MK, Yetkin I, Kabalak T, Erdogan G. Ret proto-oncogene mutations in apparently sporadic Turkish medullary thyroid carcinoma patients: Turkmen study. J Endocrinol Invest 2005; 28:806-9. [PMID: 16370559 DOI: 10.1007/bf03347570] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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: 11/29/2022]
Abstract
OBJECTIVE Medullary thyroid carcinoma (MTC) frequently occurs in a sporadic form, but a substantial number of cases are hereditary and appear as part of the multiple endocrine neoplasia type 2 (MEN2) syndromes. Germline mutations in ret proto-oncogene have been shown to be the underlying cause of MEN2 syndromes. DESIGN We carried out a multi-center study that aimed to perform mutational analysis of so called sporadic MTC patients. METHODS Fifty-six MTC patients verified by histopathologic examination were subjected to genetic analysis. Exon 10, 11, 13, 14, 15 and 16 of the ret gene were analyzed by DNA sequencing and restriction enzyme digestion method. RESULTS Among 56 apparently sporadic MTC patients, we identified 6 (10.7%) ret germline mutation carriers. Three individuals carried mutations at codon 634 in exon 11, one at codon 618 in exon 10, and two at codon 804 in exon 14. Identification of the predisposition gene mutation has allowed DNA-based strategy for direct mutation detection in patients with apparently sporadic MTCs. A substantial number of patients with apparently sporadic MTC carried germline mutations and 50% of their first degree relatives are expected to have or to develop MTC and/or other endocrine tumors. CONCLUSIONS These results indicate the importance of careful genetic surveillance of any patient with apparently sporadic MTCs.
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Affiliation(s)
- M F Erdogan
- Department of Endocrinology and Metabolic Diseases, Ankara University School of Medicine, Turkey.
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Sari R, Balci MK. Relationship between C peptide and chronic complications in type-2 diabetes mellitus. J Natl Med Assoc 2005; 97:1113-8. [PMID: 16173326 PMCID: PMC2575980] [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: 05/04/2023]
Abstract
OBJECTIVE The relationship between C peptide and micro- and macrovascular complications is poorly known in type-2 diabetes mellitus. The aim of the study was to evaluatethe relationship between serum C-peptide level and chronic complications in patients with type-2 diabetes mellitus. PATIENTS AND METHODS Three-hundred-eighteen patients (138 male, 180 female) with type-2 diabetes mellitus were included in the study. Microvascular (nephropathy, retinopathy and neuropathy) and macrovascular complications (coronary artery disease and peripheral vascular disease) were determined in all patients. In addition, presence of hypertension and smoking habit was recorded. Fasting serum glucose, lipid levels, HbA1c and C-peptide levels were measured in all patients. RESULTS There were 90 (28.3%) patients with sensorial neuropathy, 48 (15.1%) with autonomic neuropathy, 72 (22.7%) with nephropathy, 84 (26.4%) with retinopathy, 135 (42.5%) with hypertension, 270 (84.9%) with dyslipidemia, 33 (10.4%) with coronary artery disease and 18 (5.7%) with peripheral vascular disease. Serum C-peptide level was higher in patients with dyslipidemia (p = 0.045), hypertension (p = 0.001), coronary artery disease (p = 0.001), peripheral vascular disease (p = 0.001) and autonomic neuropathy (p = 0.001). Serum C-peptide level was not significantly different in patients with and without sensorial neuropathy, nephropathy and retinopathy. Serum C-peptide level was significantly associated with the presence of coronary artery disease (p = 0.001), peripheral vascular disease (p = 0.001) and autonomic neuropathy (p = 0.001). There was no relationship between C peptide and sensorial neuropathy, nephropathy and retinopathy. CONCLUSION Our findings indicate a relationship between C peptide and macrovascular but not microvascular compli cations in patients with type-2 diabetes mellitus.
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Affiliation(s)
- Ramazan Sari
- Akdeniz University, School of Medicine, Department of Internal Medicine, Division of Endocrinology and Metabolism, Antalya, Turkey.
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Abstract
PURPOSE Comparatively few prospective studies have investigated the relationship between physical activity and gallbladder motility, and the results are controversial. Exercise may affect gallbladder motility via neural or hormonal mechanisms. The purpose of this study was to evaluate the possible effects of aerobic exercise on gallbladder motility in a group of obese women without gallstones. PATIENTS AND METHODS Twenty-three obese women (age 41.2+/-10.3 years, body mass index 40.7+/-6.7 kg/m(2)) were included in the study. Following an overnight fast, fasting and postprandial (15, 30, 45, 60, 75, 90, 120, and 150 minute) volumes and ejection fractions were evaluated with real-time ultrasonography before exercise. For all subjects, the exercise regimen consisted of daily 45-minute walking sessions at 60-80% of maximum heart rate for 4 weeks except weekends. Gallbladder volume and ejection fraction were again evaluated after exercise. RESULTS Fasting and postprandial (15, 30, 45, 60, 75, 90, 120, and 150 minute) volumes were 38.6+/- 10.9, 32.8+/- 8.8, 27.6/- 8.1, 22.7+/- 8.5, 21.4+/- 7.2, 20.8+/- 7.0, 22.8+/- 7.3, 29.6 +/- 7.0, and 36.8+/- 6.2 cm(3) before the exercise period, respectively, and 40.8+/- 18.9, 29.9+/-11.2, 25.3+/- 9.2, 22.4+/-8.5, 19.6+/-7.8, 17.7+/- 6.8, 17.8+/- 7.3, 23.1+/-10.8, and 29.0+/-14.4 cm(3) after the exercise period, respectively. Postprandial (15, 30, 45, 60, 75, 90, 120, and 150 minute) ejection fractions were 13.5+/-15.9, 27.4+/-15.4, 39.5+/-20.0, 43.2+/-16.7, 44.3+/-17.3, 37.5 +/- 23.5, 23.5 +/-25.1, and 5.5+/- 21.6% before the exercise period, respectively, and 22.6+/- 20.1, 34.6+/-14.5, 42.0+/-13.6, 49.2+/-12.6, 53.1+/-14.1, 52.6+/-16.1, 43.6+/-17.0, and 29.2+/- 26.5% after exercise, respectively. After the exercise period, the 75, 90, 120, and 150 minute volumes were lower (p< 0.05, p< 0.05, p< 0.05, p< 0.01) and the 90, 120, and 150 minute ejection fractions were higher than before exercise (p< 0.05, p < 0.05, p< 0.01). CONCLUSIONS Our study showed that exercise decreased late-phase postprandial gallbladder volume and increased late-phase postprandial gallbladder motility in these obese women.
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Affiliation(s)
- Ramazan Sari
- Internal Medicine, Endocrinology, Akdeniz University School of Medicine, Antalya, Turkey
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Abstract
Insulin resistance (IR), glucose intolerance and diabetes mellitus are commonly associated with cirrhosis. The exact pathogenetic mechanisms responsible are still unknown; however, they may be related to both hepatitis C virus itself and to liver injury. IR may be the earliest abnormality, which in the following years may progress to clinical diabetes mellitus. The aim of this study was to investigate the presence of IR by euglycaemic hyperinsulinemic clamp technique, in chronic hepatitis C patients. 15 patients and nine healthy controls without any known condition that may affect IR were enrolled to the study. Chronic hepatitis C was diagnosed by liver biopsy (hepatic activity index was also determined in 10 patients) and appropriate viral and biochemical tests. Eight patients were given interferon therapy, which had been stopped for at least 3 months before the study. Euglycaemic hyperinsulinemic clamp technique was performed as previously described and peripheral glucose utilisation rate, M value, was calculated in mg/kg/min by infusion of 40 IU/m2/min regular insulin. M value of the control group was significantly higher than that of chronic hepatitis C patients (M = 5.1+/-1 vs. 3.7+/-1; p = 0.004), which was consistent with IR in the patient group. There was no significant correlation between the M value and alanine aminotransferase, aspartate aminotransferase and hepatic activity index (p = 0.621, 0.549, 0.479, respectively). Our results suggest that IR is present in chronic hepatitis C patients; it is not directly related to hepatic injury, moreover, it may be associated with some component(s) inherent to hepatitis C virus.
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Affiliation(s)
- G Yazicioglu
- Akdeniz University School of Medicine, Antalya, Turkey
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Sari R, Balci MK, Coban E, Yazicioglu G. Comparison of the effect of orlistat vs orlistat plus metformin on weight loss and insulin resistance in obese women. Int J Obes (Lond) 2004; 28:1059-63. [PMID: 15211369 DOI: 10.1038/sj.ijo.0802707] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [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: 11/08/2022]
Abstract
BACKGROUND AND AIM Orlistat and metformin are the currently used drugs for weight loss. We aimed to compare the effect of orlistat and orlistat plus metformin combination therapy on weight loss and insulin resistance in obese women. PATIENTS AND METHODS In all, 57 obese women (body mass index >/=30 kg/m(2) and normal glucose tolerance) were included. All subjects took the same content and caloric diet therapy during the study. After a month of diet period, each individual was randomly assigned to receive 360 mg orlistat per day (group 1; n=30) or 360 mg orlistat plus 1700 mg metformin per day (group 2; n=27) during the next 3 months. Body weight and insulin resistance by the homeostasis model assessment model (HOMA-IR) was measured at baseline, first month and fourth month. RESULTS The mean weight loss in groups 1 and 2 was 1.36+/-0.8 kg (1.4+/-0.7%) and 1.11+/-0.7 kg (1.1+/-0.7%) from baseline to first month; 4.8+/-2.9 kg (5.28+/-3.0%) and 5.77+/-2.5 kg (6.17+/-2.9%) from first month to fourth month. Body weight was decreased in groups 1 (P< 0.001) and 2 (P< 0.001), but there was no statistically significant difference between groups. Change of HOMA-IR in groups 1 and 2 was 0.41+/-0.4 (14.9+/-10.1%) and 0.23+/-0.7 (8.16+/-12.3%) from baseline to first month; 0.49+/-0.77 (22.0+/-26%) and 0.95+/-0.88 (34.8+/-29.1%) from first month to fourth month. HOMA-IR value was decreased in groups 1 (P< 0.001) and 2 (P< 0.001) but was not different between groups during the study period. CONCLUSIONS Combination of orlistat with metformin did not result in an additional effect on weight loss and insulin resistance when compared to orlistat alone in our study. However, new studies which have more sample sizes and the longer study period are necessary for this purpose.
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Affiliation(s)
- R Sari
- Division of Endocrinology & Metabolism, School of Medicine, Akdeniz University, Turkey.
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Dora B, Mihçi E, Eser A, Ozdemir C, Cakir M, Balci MK, Balkan S. Prolonged hyperglycemia in the early subacute period after cerebral infarction: effects on short term prognosis. Acta Neurol Belg 2004; 104:64-7. [PMID: 15508269] [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: 05/01/2023]
Abstract
Although the adverse effect of admission hyperglycemia in cerebral infarction on prognosis is well known, studies generally have not questioned the effect of hyperglycemia in the early subacute period on prognosis after a stroke. Forty-six patients with acute ischemic stroke were seperated into 3 groups: Group 1) Known diabetes or admission blood glucose (ABG) > or = 140 mg/dl and HbA1c > or = 8,0%); Group 2) ABG > or = 140 mg/dl and HbA1c < 8,0%; and Group 3) ABG < 140 mg/dl and HbA1c < 8,0%. Blood glucose was followed-up 4 times a day for 10 days after the stroke and the mean of these measurements was calculated as the mean of glycemic regulation (MGR). Neurological evaluation was done at presentation and on day 10 and 30 with the National Institute of Health (NIH) scale. Oedema, lesion size and presence of hemorrhagic transformation were evaluated using CT. The MGR was significantly higher in group 1 compared to the other two groups (p < 0,001 and p < 0,01) and in group 2 compared to group 3 (p < 0,001). Patients with clinical worsening had a significantly higher MGR (p < 0,05). Patients with marked cerebral edema had a significantly higher MGR (p < 0,01) compared to patients with lesser edema. No correlation was found between MGR and lesion size or hemorrhagic transformation. Our results show that hyperglycemia in the early subacute period after cerebral infarction is associated with more pronounced cerebral edema and has an adverse effect on short term prognosis. We suggest that studies investigating the effect of insulin infusion on stroke prognosis should also consider infusions for a longer period than 24 hours.
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Affiliation(s)
- Babür Dora
- Akdeniz University School of Medicine Department of Neurology, Antalya, Turkey.
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Abstract
OBJECTIVE Sibutramine and orlistat are currently used for weight loss. We aimed to investigate the effect of orlistat and sibutramine combination therapy in treatment of obese women. SUBJECTS AND DESIGN Study population consisted of 89 obese women who had a body mass index > or = 30 kg/m2, were normotensive, and had normal glucose tolerance. All patients were placed on a diet which contained fat approximately 30% of total calorie intake and the diet was designed to cause an energy deficit of approximately 2.51-3.56 megajoule/day. At the first month of diet (baseline), all patients were randomly divided into three therapy groups: Diet + Orlistat (group 1; n = 30 patients), Diet + Sibutramine (group 2; n = 29 patients), Diet + Orlistat + Sibutramine (group 3; n = 30 patients). Body weight, body fat distribution and serum lipid levels were evaluated baseline and after six months in all subjects. RESULTS Mean weight loss was 5.5 +/- 4.9 kg (p = 0.024) in group 1, 10.1 +/- 3.6 kg (p < 0.001) in group 2, 10.8 +/- 6.6 kg (p < 0.001) in group 3 after the six months. Weight loss was significantly greater in group 2 (p = 0.003) and group 3 (p = 0.002) when compared with group 1. Percentage of mean weight loss was 5.5 +/- 3.1% in group 1, 10.2 +/- 4.8% in group 2, 10.6 +/- 5.7% in group 3. Percentage of weight loss was higher in group 2 (p = 0.01) and group 3 (p = 0.009) when compared with group 1. Weight loss and percentage of weight loss were not different between group 2 and group 3. CONCLUSION These three regimens had different results on weight loss in obese women. Combination drug therapy and sibutramine therapy were both more effective than orlistat therapy alone. However, no significant difference was noted between combination drug therapy and sibutramine treatment groups.
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Affiliation(s)
- Ramazan Sari
- Department of Internal Medicine, Division of Endocrinology and Metabolism, School of Medicine, Akdeniz University, Antalya, Turkey.
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Sari R, Balci MK, Akbas SH, Avci B. The effects of diet, sulfonylurea, and Repaglinide therapy on clinical and metabolic parameters in type 2 diabetic patients during Ramadan. Endocr Res 2004; 30:169-77. [PMID: 15473127 DOI: 10.1081/erc-200027375] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [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: 11/03/2022]
Abstract
BACKGROUND AND AIM Diabetes and its treatment can cause problems for the Muslim population. The aim of this study was to evaluate the effect of different therapy models on clinical and metabolic status in type 2 diabetic patients during Ramadan. MATERIAL AND METHODS Fifty-two type 2 diabetic patients were included to this study. Twelve of patients were on diabetic diet only before and during Ramadan (Group 1). Forty of patients had had sulfonylurea (Glimepiride 23 patients, gliclazide 17 patients) before Ramadan. Thirteen of these patients were on a single dose sulfonylurea (Glimepiride 8 patients, gliclazide 5 patients) (Group 2) and 27 were on Repaglinide 2 x 2 mg (Group 3) during Ramadan. Beta-hydroxybutyric acid, glucose, fructosamine, HbA1c, lipid levels and body weight were measured before and after Ramadan. RESULTS Body weight, fasting plasma glucose, fructosamine, HbA1c, total cholesterol were not changed in groups during the study. Triglyceride level decreased after Ramadan in groups 2 (p = 0.002) and 3 (p = 0.024). HDL-cholesterol level increased in group 3 (p = 0.022). Fasting capillary beta-hydroxybutyric acid level increased in group 1 (p = 0.034) and didn't change in groups 2 and 3 during the Ramadan. Only one hypoglycemic event occurred at day 6 of Ramadan in patients in group 2 (the patient was on 3 mg glimepiride). CONCLUSION Our results conclude that Ramadan fasting affects metabolic parameters in type 2 diabetes and hypoglycemia should be kept in mind especially in patients using sulfonylurea treatment. Ramadan fasting is not advised for type 2 diabetics while taking medical therapy. If the patient wants Ramadan fasting, these patients using Repaglinide can reduce the frequency of hypoglycemia.
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Affiliation(s)
- Ramazan Sari
- Department of Endocrinology, Division of Endocrinology and Metabolism, School of Medicine, University of Akdeniz, Antalya, Turkey.
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Sari R, Balci MK, Coban E, Karayalcin U. Sonographic evaluation of gallbladder volume and ejection fraction in obese women without gallstones. J Clin Ultrasound 2003; 31:352-357. [PMID: 12923879 DOI: 10.1002/jcu.10191] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [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
PURPOSE Obese people have an increased incidence of gallstones. Although the exact pathogenic mechanisms of gallstone development are unknown, impaired gallbladder emptying has been suggested as a possible underlying mechanism. Our aim was to investigate this possibility by evaluating gallbladder motility and related factors in obese and nonobese women without gallstones. METHODS This study included 79 obese women and 25 nonobese healthy women. Using real-time sonography, we evaluated fasting and postprandial (15th-, 30th-, 45th-, 60th-, 75th-, 90th-, 120th-, and 150th-minute) gallbladder volumes and ejection fractions. The smallest postprandial volume was considered the residual volume. RESULTS Mean (+/- standard deviation) fasting and residual gallbladder volumes were 43.2 +/- 18.3 cm(3) and 21.4 +/- 11.2 cm(3), respectively, in the obese women and 28.1 +/- 12.3 cm(3) and 7.9 +/- 3.4 cm(3), respectively, in the nonobese women. Maximal ejection fraction was 49 +/- 19% in obese women and 63 +/- 29% in nonobese women (p = 0.001). The fasting and residual volumes and the postprandial volumes at all time points were higher in obese women than in nonobese women (p < 0.001). In addition, 15th-, 30th-, 45th-, 60th-, 75th-, and 90th-minute postprandial ejection fractions were lower in obese women than in nonobese women (p < 0.001). Positive correlations were found between fasting gallbladder volume and body mass index and body fat weight and between residual volume and body mass index, waist circumference, body fat percentage, and body fat weight (p < 0.05 for all comparisons). CONCLUSIONS Our results show that fasting and postprandial gallbladder volumes are higher and that postprandial gallbladder motility is lower in obese than in nonobese women. There are positive correlations between fasting gallbladder volume and body weight, body mass index, and body fat weight.
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Affiliation(s)
- Ramazan Sari
- Division of Endocrinology and Metabolism, Akdeniz University, School of Medicine, TR-07070 Antalya, Turkey
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Abstract
OBJECTIVE Thyroid volume and thyroid function may vary in obese and nonobese women. It is not known whether weight loss could affect thyroid volume and function in obese subjects. PATIENTS AND METHODS The study population consisted of 98 premenopausal euthyroid obese [body mass index (BMI) = 30 kg/m2] women (mean age 40.5 +/- 11.4 years) and 31 nonobese (BMI < 25 kg/m2) women (mean age 38.6 +/- 12.9 years). Weight, height, BMI, waist circumference, body fat percentage and fat weight of all subjects were measured. Thyroid function and thyroid ultrasonography were performed at baseline and after 6 months of obesity treatment. Subgroup analysis was done according to weight loss. RESULTS Thyroid volume (P = 0.021) and TSH concentration (P = 0.047) were higher; free T3 (P < 0.001) and free T4 concentrations (P = 0.045) were lower in obese women; however, all were still in the normal range. There was a positive correlation between thyroid volume and body weight (r = 0.319, P = 0.002), BMI (r = 0.504, P < 0.001), body fat percentage (r = 0.375, P = 0.001), body fat weight (r = 0.309, P = 0.01) and waist circumference (r = 0.386, P = 0.004). There was a positive correlation between TSH concentration and body weight (r = 0.227, P = 0.042) and body fat weight (r = 0.268, P = 0.038). After 6 months of obesity treatment, thyroid volume (P = 0.008) and TSH concentration (P = 0.006) decreased only in obese women who lost > 10% body weight. There was a positive correlation between the changes of thyroid volume and the change of body weight (r = 0.341, P = 0.009) and the change of body fat weight (r = 0.406, P = 0.013). CONCLUSIONS Our study suggests that thyroid volume and function may vary in obese women in association with body weight and fat mass; > 10% weight loss may affect thyroid volume and function, which however, is clinically insignificant.
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Affiliation(s)
- Ramazan Sari
- Division of Endocrinology and Metabolism, Akdeniz University Medical Faculty, Antalya, Turkey
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Abstract
OBJECTIVE Thyroid dysfunction may cause musculoskeletal symptoms. We have evaluated the prevalence of adhesive capsulitis, Dupuytren's contracture, trigger finger, limited joint mobility and carpal tunnel syndrome in a series of patients with various thyroid diseases and differing levels of function. DESIGN AND PATIENTS Patients with euthyroid (diffuse and/or nodular) goitre, Hashimoto's thyroiditis, Graves' disease, toxic nodular goitre, toxic diffuse goitre and patients with goitre who had partial thyroidectomy were included in the study (n = 137). Neurological and musculoskeletal examinations were performed after a standardized symptom questionnaire. The prevalence of musculoskeletal problems was analysed with respect to thyroid function and thyroid autoantibody status. MEASUREMENTS Serum concentrations of free T3, free T4, TSH and thyroglobulin and thyroperoxidase antibodies were determined. Serum levels of creatine kinase, lactate dehydrogenase, calcium and phosphate along with erythrocyte sedimentation rate were measured to exclude other causes of musculoskeletal complaints. RESULTS When the study group (n = 137) was divided according to thyroid status, 30.6% (n = 42) were thyrotoxic, 16.8% (n = 23) had subclinical thyrotoxicosis, 28.5% (n = 39) were euthyroid, 7.3% (n = 10) had subclinical hypothyroidism and 16.8% (n = 23) were hypothyroid. Overall, adhesive capsulitis was found in 10.9% (n = 15), Dupuytren's contracture in 8.8% (n = 12), limited joint mobility in 4.4% (n = 6), trigger finger in 2.9% (n = 4) and carpal tunnel syndrome in 9.5% (n = 13) of the patients. The prevalence of adhesive capsulitis was highest in patients with subclinical thyrotoxicosis (17.4%); Dupuytren's contracture, limited joint mobility and carpal tunnel syndrome were commonest in hypothyroid patients (21.7%, 8.7% and 30.4%, respectively). Trigger finger occurred in 10% of patients with subclinical hypothyroidism. When these prevalences were analysed with respect to thyroid status, carpal tunnel syndrome was significantly more prevalent in the hypothyroid group (P = 0.004). When thyroperoxidase antibody-positive and -negative patients were compared, adhesive capsulitis negatively (P = 0.03, r =-0.18) and trigger finger positively correlated with (P = 0.03, r = 0.21) thyroperoxidase antibody existence. CONCLUSIONS These results demonstrate that musculoskeletal disorders often accompany thyroid dysfunction. In addition to the well-known observation that these disorders are common in patients with hypothyroidism, they are also observed in patients with thyrotoxicosis. Patients with thyroid dysfunction should be questioned for musculoskeletal complaints and referred to a specialist if necessary.
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Affiliation(s)
- Mehtap Cakir
- Division of Endocrinology and Metabolism, Akdeniz University, School of Medicine, Antalya, Turkey
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Abstract
OBJECTIVE Statins, in addition to cholesterol lowering, have nonlipid effects on formation and progression of atheromatous plaque. Insulin resistance and hyperinsulinemia may have detrimental influences on the arterial wall. Statins (may also) inhibit insulin signal transferring in vascular smooth cell cultures. However, their effect on insulin sensitivity remains controversial. Therefore, we decided to investigate the effect of simvastatin on insulin sensitivity in hypercholesterolemic patients. PATIENTS AND METHODS Eighteen patients with primary hypercholesterolemia were divided into simvastatin group (n = 9; 4 females, 5 males; BMI 30.6 +/- 4 kg/m2; mean ages 57 +/- 6 years) and placebo group (n = 9; 4 females, 5 males; BMI 28 +/- 2.9 kg/m2; mean ages 49 +/- 10 years). Simvastatin (20 mg/day) or placebo were given for 2 months. Total and HDL cholesterol were measured and LDL cholesterol was calculated by Friedewald formula. Insulin sensitivity was determined by using euglycemic hyperinsulinemic clamp technique [40 microU/m2/min insulin infusion rate; glucose disposal rate (M)= mg/kg/min] before and after treatment. RESULTS Plasma levels of total, LDL and HDL cholesterol decreased significantly in simvastatin group after treatment (p = 0.000, p = 0.000, and p = 0.048, respectively). Plasma levels of total cholesterol decreased significantly (p = 0.032), whereas LDL and HDL levels remained unchanged in placebo group. M value (mg/kg/min) decreased insignificantly in simvastatin group (4.32 +/- 1.57 vs. 3.71 +/- 1.91) and increased in placebo group (3.55 +/- 1.91 vs. 3.95 +/- 0.95). CONCLUSION Short-term simvastatin treatment did not affect insulin sensitivity determined by "gold standard" euglycemic hyperinsulinemic clamp method in hypercholesterolemic patients in this research. Further studies with simvastatin using higher doses and longer duration should be performed.
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Affiliation(s)
- Hasan Altunbaş
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Akdeniz University School of Medicine, Antalya, Turkey
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Abstract
We report here a 48-yr-old woman presenting with a solitary thyroid nodule in the left lobe of the thyroid. The aspiration cytology of the nodule was reported as follicular neoplasia and she underwent surgery. Frozen section was suspicious for medullary thyroid carcinoma and a total thyroidectomy was performed. The pathology report revealed medullary thyroid carcinoma, follicular variant. Immunohistochemical analysis was negative for thyroglobulin and positive for calcitonin. A few patients with this variant have been reported in the literature, mainly diagnosed by immunohistochemical features of the tumor. In light of the limited information we have obtained from the literature, it is reasonable to emphasize that these cases should be distinguished from the mixed medullary- follicular thyroid carcinomas and medullary carcinomas with entrapped follicles. Immunohistochemical examination with calcitonin and thyroglobulin is also essential.
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Affiliation(s)
- Mehtap Cakir
- Akdeniz University, Faculty of Medicine, Division of Endocrinology and Metabolism, Antalya, Turkey
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Abstract
It is well known that cardiovascular morbidity and mortality are high in diabetic patients. Cardiac involvement is silent and early and these diabetic patients generally complain of chronic fatigue. This study was designed to evaluate the relation between glycemic control and exercise capacity in 330 diabetic patients who have no cardiac symptoms by sustaining dynamic exercise. After a cardiac examination, patients with coronary heart disease, ECG abnormalities, cardiac failure, valvular disease, cerebrovascular disease, peripheral artery disease, anaemia and peripheral neuropathy were excluded. Plasma HbA1c and lipid levels were obtained and a symptom limited exercise test based on "Bruce Protocol" was performed on all patients. Plasma HbA1c levels were significantly increased in smokers and in hypercholesterolemic patients (p<0.001, p=0.006). A moderate correlation between exercise capacity and HbA1c levels, and a weak correlation between duration of diabetes, age, sex, hypertension and plasma lipids were obtained. Multivariant regression analys is revealed that only HbA1c and hypercholesterolemia affected exercise capacity independently (r=-0.54 r=-0.30). In conclusion, poor glycemic control in diabetic patients causes earlier cellular involvement. Because of the high affinity of HbA1c to oxygen, the energy metabolism of the cell is affected, with a clinical correlation between chronic fatigue and worsening exercise capacity.
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Affiliation(s)
- I Demir
- Department of Cardiology, Akdeniz University, Antalya, Turkey
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Altunbas H, Yazicioglu G, Balci MK, Karayalçin U, Undar L. The use of recombinant human G-CSF in the treatment of propylthiouracil-induced agranulocytosis. Int J Clin Pract 1999; 53:396-7. [PMID: 10695110] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
Abstract
A 43-year-old female patient with Basedow-Graves' disease developed agranulocytosis in the eighth month of propylthiouracil therapy. After discontinuing the drug, a broad spectrum antibiotic regimen plus recombinant human granulocyte colony-stimulating factor (G-CSF), a human haematopoietic growth factor, were started. Her granulocyte count returned to normal with the second dose of G-CSF, and ulcerating pharyngitis improved rapidly. We think that in patients with propylthiouracil-induced agranulocytosis, G-CSF will reduce the risk and severity of infection, and should be accepted as a part of the standard therapy.
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Affiliation(s)
- H Altunbas
- Department of Endocrinology and Metabolism, Akdeniz University School of Medicine, Turkey
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Balci N, Balci MK, Tüzüner S. Shoulder adhesive capsulitis and shoulder range of motion in type II diabetes mellitus: association with diabetic complications. J Diabetes Complications 1999; 13:135-40. [PMID: 10509873 DOI: 10.1016/s1056-8727(99)00037-9] [Citation(s) in RCA: 137] [Impact Index Per Article: 5.5] [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: 12/01/2022]
Abstract
This study was done to examine the association between shoulder adhesive capsulitis and chronic diabetic complications and diseases closely related to diabetes in Akdeniz University Hospital. Shoulder adhesive capsulitis were evaluated in 297 consecutive type II diabetic patients attending an outpatient diabetic clinic. Shoulder adhesive capsulitis was detected in 86 patients (29%). There was a significant association between shoulder adhesive capsulitis and limited joint mobility (p = 0.006), shoulder adhesive capsulitis and Dupuytren's disease (p = 0.003). Odds ratios (OR) for carpal tunnel syndrome, limited joint mobility, and Dupuytren's disease with shoulder adhesive capsulitis were respectively 1.4, 2.1, and 2.4 [95% confidence interval (CI), respectively, 0.7-2.9, 1.2-3.69, and 1.3-4.4]. Also, shoulder adhesive capsulitis was associated with the age of patients (p = 0.000) and the duration of diabetes (p = 0.03). When other associations between shoulder adhesive capsulitis and diabetic complications were compared, it was associated with retinopathy [p = 0.014, OR = 2.2 (95% CI 1.1-4.2)], but there was no association with neuropathy or macroproteinuria. On the other hand, the degrees of passive abduction, internal rotation, external rotation motions of shoulder joints in the all patients were correlated with age of patients, duration of diabetes, neuropathy, and the other hands' problems (Dupuytren's disease, limited joint mobility) (p<0.05). The presence of shoulder adhesive capsulitis may indicate presence of organ involvement.
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Affiliation(s)
- N Balci
- Department of Orthopedics and Trauma Surgery, Medical School of Akdeniz University, Antalya, Turkey
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Abstract
With the widening use of computerized tomography, the incidentaloma, an adenoma found incidentally in the adrenal, in computerized tomograms obtained for problems not necessarily related to the adrenal, has emerged as a recent clinical entity. Nine cases with such tumors are presented, here, along with a brief review of the related medical literature. Endocrine and other studies have shown that two of these nine patients had hormone secreting adrenal tumors, two pheochromocytomas. Surgical resection of the tumor was performed in six of the cases and aspiration biopsy was done in four with three completely benign cytological examination results (Class I or II) and one Class III result. The tumor with the class III result turned out to be a benign pheochromocytoma. CT estimates of the tumor size were 25 mm to 80 mm in the whole group and 30 to 80 mm in the patients who were operated on. Operation and histopathologic examination revealed three cortical adenomas, two pheochromocytomas, and one myelolipoma. Although no malignant tumors were found, the percentage of functioning adrenal neoplasms is rather high (22.2%) in this group of nine incidentalomas. Cases of adrenal incidentaloma therefore require a thorough endocrine evaluation along with other examinations which allow the clinician to follow tumor size.
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Affiliation(s)
- N Kamel
- Ankara University, School of Medicine, Department of Endocrinology and Metabolic Diseases, Turkey
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Abstract
We report a 34-year-old woman with intrathyroid metastasis of choriocarcinoma associated with pulmonary and brain metastasis. The patient presented with a solitary thyroid nodule. Needle biopsy showed anaplastic malignant cells. Pathologic evaluation after thyroidectomy showed choriocarcinoma in the thyroid gland and the patient subsequently underwent combined chemotherapy and radiotherapy with satisfactory response. This is only the third reported case of metastatic choriocarcinoma in the thyroid gland and emphasizes this rare clinical presentation of choriocarcinoma.
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Affiliation(s)
- G Erdoğan
- Department of Internal Medicine, Ankara University, School of Medicine, Turkey
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Balci MK, Aydoğdu S, Koç O, Yeşilbağ B, Yurdaydin C, Ozden A. [Parasite prevalence in schools with different socioeconomic status and evaluation of methods for diagnosing intestinal parasitic diseases]. MIKROBIYOL BUL 1990; 24:368-78. [PMID: 2287296] [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: 12/31/2022]
Abstract
In this study; the parasite prevalence of schools with different socio-economical status and three methods for diagnosing intestinal parasitosis were evaluated. Children from two primary schools and one junior high school with different socio-economical status participated in the study. The three method used for diagnosing parasitosis in this study were direct wet mounts, concentrated saline flotation technique, and zinc sulfate centrifugal flotation method. Parasitosis was found in 69 fecal samples (18%). The distribution of the parasites found were Hymenolepis nana (29%), Ascaris lumbricoides (26%), Enterobius vermicularis (23%), Trichirus trichiura (18%), taenia saginata (4%). The parasite prevalence in schools with low and high socioeconomical status differed significantly (27% vs. 5% respectively). Combined methods were superior to single methods. The combined method of direct wet mounts and zinc sulfate centrifugal flotation was the most sensitive method (diagnosis rate 90%). But we think that the combined method of direct wet mounts and concentrated saline flotation technique is a simpler method with almost equal results (86%).
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Affiliation(s)
- M K Balci
- Arş. Gör., Ankara Universitesi, Tip Fakültesi, Iç Hastaliklari Anabilim Dali
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