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Bayram E, Khatib G, Kuçukgoz-Gulec U, Guzel AB, Vardar MA, Paydas S. Comparison of the effectiveness of liposomal doxorubicin and gemcitabine in patients with platinum-sensitive recurrent ovarian cancer receiving third-line chemotherapy. Eur Rev Med Pharmacol Sci 2023; 27:6618-6626. [PMID: 37522673 DOI: 10.26355/eurrev_202307_33132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
OBJECTIVE In this retrospective study, we compared the effectiveness and reliability of the third-line chemotherapies gemcitabine and liposomal doxorubicin, in patients with platinum-sensitive ovarian cancer (OC). PATIENTS AND METHODS The retrospective study included platinum-sensitive epithelial ovarian cancer patients who had previously received paclitaxel and carboplatin therapy. Between 2013-2021, cross-matched 45 patients who received gemcitabine and 48 who received liposomal doxorubicin as third-line therapy were compared based on clinicopathological characteristics, biomarkers, and blood cancer antigen (CA) 125 levels. Time to treatment failure, survival, and quality of life were additional objectives. RESULTS The study included a total of 93 patients. The reported mean survival durations for treatments, 19.45 months for gemcitabine and 17 months for liposomal doxorubicin, did not statistically significantly differ (p=0.398). The mean CA 125 levels for the liposomal doxorubicin and gemcitabine groups after treatment were 54.4±11.4 U/ml and 54.7±11.1 U/ml, respectively. There was no noticeable difference between the treatments when comparing the postop CA 125 value (p=0.37). CONCLUSIONS For both pegylated liposomal doxorubicin (PLD) and gemcitabine as single agents in the third line, our data revealed comparable effectiveness results, and there was no substantial difference in progression-free survival (PFS) for recurrent ovarian cancer. These therapies were tolerated with an expected incidence of hematological toxicities.
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Affiliation(s)
- E Bayram
- Department of Medical Oncology, Faculty of Medicine, Cukurova University, Adana, Turkey.
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Bayram E, Selvi O, Köşeci T, Mete B, Yaslıkaya Ş, Paydaş S. Comparison of different cyclin-dependent kinase inhibitors and KI-67 levels on survival and toxicity in breast cancer treatment. Eur Rev Med Pharmacol Sci 2023; 27:5230-5239. [PMID: 37318497 DOI: 10.26355/eurrev_202306_32641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
OBJECTIVE As cyclin-dependent kinase 4/6 (CDK 4/6) inhibitors, which play a crucial role in the cell cycle, palbociclib and ribociclib are two novel drugs that are recently being used in the treatment of breast cancer. Despite targeting the same pathway, these agents have different molecular activities and processes. KI-67 is known to play a significant role in cell proliferation that has been related to prognosis. This study investigated the impact of palbociclib, ribociclib, and KI-67 on toxicity and survival in breast cancer treatment. PATIENTS AND METHODS The study included 140 breast cancer patients in total. Patients were divided into groups based on the use of different CDK inhibitors and KI-67 values. Mortality, progression, treatment response rates, frequency, and severity of adverse events were assessed retrospectively. RESULTS The patients in our study had an average age of 53.62±12.71 years, and 62.9% of them were diagnosed at an early stage. 34.3% (n=48) of the patients progressed after receiving treatment, while 19.3% (n=27) of the patients died. The median follow-up time was 576 days, the maximum follow-up time was 1,471 days, and the median time to progression was 301 days (min=28-max=713). Mortality, progression, and treatment response rate between two different CDK inhibitors or KI-67 groups revealed no statistically significant differences. CONCLUSIONS Our data show a comparison between the effectiveness of palbociclib and ribociclib, and no noticeable difference is found in breast cancer patients' survival, progression, or severity of adverse effects. Likewise, there is no meaningful difference in KI-67 expression subgroups between progression and survival following treatment.
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Affiliation(s)
- E Bayram
- Department of Medical Oncology, Faculty of Medicine, Cukurova University, Adana, Turkey.
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Bayram E, Sahin B. Awareness and obscurity: demystifying genomic profiling in real-world practice for the members of the Turkish Society of Medical Oncology (TSMO). Eur Rev Med Pharmacol Sci 2023; 27:4145-4152. [PMID: 37203840 DOI: 10.26355/eurrev_202305_32323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
OBJECTIVE Molecular testing in oncology practice is increasingly being used to offer more relevant therapies to cancer patients. Our study aims to determine the real-world impact of routine incorporation of molecular testing among the Turkish Oncology community across all types of cancer and identify gaps for the first time. SUBJECTS AND METHODS This research was conducted in Turkey among medical oncologists from different backgrounds. The survey attendance was entirely voluntary. A questionnaire with twelve items (multiple choice +/- closed-ended) was utilized in this study to assess the effect of molecular tests in real clinical situations. RESULTS 102 oncologists with various levels of experience participated in this study. Most of the respondents (97%) reported successful implementation of molecular testing. About 10% of the participating oncologists said they preferred genetic tests at the early stages of cancer, compared to the majority who preferred genetic tests at the terminal stage. Molecular tests are often performed in separate locations and 47% of the oncologists were using a targeted panel specific to the type of malignancy. CONCLUSIONS Several informational difficulties must be resolved in order to have early personalized therapy as the standard treatment. We need accessible, comprehensive, and regularly updated databases to compare genetic profiling and its therapeutic implications. We also need to continue educating patients and physicians.
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Affiliation(s)
- E Bayram
- Department of Medical Oncology, Faculty of Medicine, Cukurova University, Adana, Turkey.
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Bayram E, Sahin B, Koseci T, Bisgin A. 927P Awareness & obscurity: Demystifying genomic profiling in real-world practice for the members of Turkish Society of Medical Oncology (TSMO). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Paketci C, Karakaya M, Edem P, Bayram E, Keller N, Daimagüler HS, Cirak S, Jordanova A, Hiz S, Wirth B, Yiş U. Clinical, electrophysiological and genetic characteristics of childhood hereditary polyneuropathies. Rev Neurol (Paris) 2020; 176:846-855. [DOI: 10.1016/j.neurol.2020.04.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/04/2020] [Accepted: 04/07/2020] [Indexed: 12/26/2022]
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Bayram E, Bayram HM, Aslan T, Göktürk H, Ustün Y. Evaluation of calcium silicate cement bond strength after using gutta-percha solvents. Niger J Clin Pract 2018; 20:1417-1421. [PMID: 29303125 DOI: 10.4103/1119-3077.197020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES To determine the effect of different gutta-percha solvents (chloroform, Endosolv E, orange oil, and eucalyptol) on the push-out bond strength of calcium silicate cements (CSCs; white mineral trioxide aggregate [WMTA]; capsule-form mineral trioxide aggregate [CMTA], and Biodentine). MATERIALS AND METHODS One hundred and fifty extracted single-rooted human mandibular premolars were sectioned into 3-mm-thick slices. The canal lumens were enlarged for 1.35-mm-diameter standardized cavities. The samples were randomly divided into five groups (n = 30) according to the solvent type: G1, chloroform; G2, Endosolv E; G3, eucalyptol; G4, orange oil; G5, no solvent (control). After application of the solvents for 5 min, the specimens were divided into three subgroups (n = 10): (i) WMTA, (ii) CMTA, and (iii) Biodentine. The push-out bond strength was measured. Two-way ANOVA analysis of variance and post hoc Tukey tests were used for analyses (P = 0.05). RESULTS The highest push-out bond strength was observed in the Biodentine (P < 0.05), and the values of WMTA and CMTA were not significantly different in all solvent groups (P > 0.05). There were no statistically significant differences among the gutta-percha solvents and control group in WMTA (P > 0.05). CONCLUSIONS Gutta-percha solvents used during retreatment decreased the bond strength of Biodentine and CMTA to root dentin. The bond strength of WMTA was not affected by the use of gutta-percha solvents.
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Affiliation(s)
- E Bayram
- Department of Endodontics, Faculty of Dentistry, Gaziosmanpasa University, Tokat, Turkey
| | - H M Bayram
- Department of Endodontics, Faculty of Dentistry, Gaziosmanpasa University, Tokat, Turkey
| | - T Aslan
- Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
| | - H Göktürk
- Department of Endodontics, Faculty of Dentistry, Gaziosmanpasa University, Tokat, Turkey
| | - Y Ustün
- Department of Endodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
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Bayram E, Akbostancı M. Impulse control disorder frequency in different parkinsonism syndromes. Parkinsonism Relat Disord 2018. [DOI: 10.1016/j.parkreldis.2017.11.096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yiş U, Becker K, Kurul S, Uyanik G, Bayram E, Haliloglu G, Polat I, Ayanoglu M, Okur D, Tosun A, Serdaroglu G, Yılmaz S, Topaloğlu H, Anlar B, Cirak S, Engel A. Genetic Landscape of congenital myasthenic syndroms from Turkey: novel mutations and clinical insights. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Yiş U, Uyanık G, Rosendahl D, Çarman K, Bayram E, Heise M, Cömertpay G, Kurul S. Clinical, radiological, and genetic survey of patients with muscle–eye–brain disease caused by mutations in POMGNT1. Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bayram E, Atalay C, Kocatürk H, Yücel O. Effects of Trimetazidine on Lipid Peroxidation, Antioxidant Enzyme Activities and Plasma Brain Natriuretic Peptide Levels in Patients with Chronic Cor Pulmonale. J Int Med Res 2016; 33:612-9. [PMID: 16372578 DOI: 10.1177/147323000503300602] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
An oxidant/antioxidant imbalance in favour of oxidants appears to occur in chronic cor pulmonale (CCP). Oxidative stress could also be a critical event in the pathogenesis of this condition. Trimetazidine (TMZ) has antioxidant properties and may affect the utilization of oxygen radicals. We investigated the effect of TMZ (20 mg three times daily, orally) on activities of erythrocyte malondialdehyde (MDA) and catalase (eCAT), erythrocyte and plasma glutathione peroxidase (GSH-Px) and plasma superoxide dismutase (pSOD) in CCP patients. We also assessed changes in plasma levels of brain natriuretic peptide (BNP) with TMZ therapy. Sixty CCP patients with significantly higher MDA and markedly lower pSOD, eCAT and GSH-Px (erythrocyte) activities than 24 healthy controls were randomly allocated to receive routine treatment or routine treatment plus TMZ. After 3 months' therapy, greater pSOD, eCAT and GSH-Px (erythrocyte and plasma) activities and lower MDA activity were found with TMZ treatment compared with routine treatment. Plasma BNP levels were significantly lower in TMZ-treated patients and higher in the routine treatment group than in the control group. TMZ improved antioxidant levels, decreased oxidative stress and decreased plasma BNP levels in CCP patients.
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Affiliation(s)
- E Bayram
- Department of Cardiology, Nümune Hospital, Erzurum, Turkey.
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Ma J, Son J, Arun B, Hazle J, Hwang K, Wang K, Bayram E, Madewell J, Yang W, Dogan B. SU-F-I-16: Short Breast MRI with High-Resolution T2-Weighted and Dynamic Contrast Enhanced T1-Weighted Images. Med Phys 2016. [DOI: 10.1118/1.4955844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Price R, Knight R, Hwang K, Bayram E, Glide-Hurst C. TU-AB-BRA-05: Optimization of a Novel Large Field of View Distortion Phantom for MR-Only Treatment Planning. Med Phys 2016. [DOI: 10.1118/1.4957415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Tas M, Simşek Z, Degirmenci H, Çolak A, Bayram E, Şenocak H. PP-177 CAN LAD OCCLUSION RESTORE LIMA GRAFT FLOW? Int J Cardiol 2013. [DOI: 10.1016/s0167-5273(13)70381-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Isik T, Tanboga I, Ayhan E, Uyarel H, Kaya A, Kurt M, Ergelen M, Cicek G, Bayram E, Altay S, Korkmaz A, Ghannadian B. OP-145 IMPACT OF ALTITUDE ON PREDICTING MID TERM OUTCOME IN PATIENTS WITH ST ELEVATION MYOCARDIAL IN FARCTION. Int J Cardiol 2012. [DOI: 10.1016/s0167-5273(12)70086-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Simsek Z, Tas M, Bayram E, Gundogdu F, Karakelleoglu S. OP-165 CHRONIC MESENTERIC ARTERIAL ISCHEMIA A RARE CAUSE A ABDOMINAL PAIN. Int J Cardiol 2012. [DOI: 10.1016/s0167-5273(12)70103-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Kurt M, Isik T, Kaya A, Ekinci M, Bilen E, Simsek Z, Bayram E, Tanboga I. OP-085: TRANSESOPHAGEAL 2-DIMENSIONAL SPECKLE TRACKING ECHOCARDIOGRAPHY: DEFINITION NORMAL RANGE. Int J Cardiol 2011. [DOI: 10.1016/s0167-5273(11)70171-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Isik T, Kurt M, Tanboga I, Kaya A, Ekinci M, Bayram E, Uyarel H. OP-027: THE RELATIONSHIP BETWEEN SERUM GLUCOSE, INSULIN LEVEL, INSULIN RESISTANCE AND ELECTROCARDIOGRAPHIC PARAMETERS. Int J Cardiol 2011. [DOI: 10.1016/s0167-5273(11)70135-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bilen E, Kurt M, Isik T, Ekinci M, Kaya A, Bayram E, Simsek Z, Tanboga I. PP-115: SEVERITY OF MITRAL STENOSIS AND LEFT VENTRICULAR MECHANICS: A SPECKLE TRACKING STUDY. Int J Cardiol 2011. [DOI: 10.1016/s0167-5273(11)70355-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ekinci M, Kurt M, Kaya A, Isik T, Bilen E, Simsek Z, Tas M, Bayram E, Tanboga I. OP-039: RELATION BETWEEN EPICARDIAL FAT TISSUE ASSESSED BY ECHOCARDIOGRAPHY AND ATRIAL FIBRILLATION. Int J Cardiol 2011. [DOI: 10.1016/s0167-5273(11)70146-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kurt M, Kaya A, Ekinci M, Isik T, Bilen E, Simsek Z, Bayram E, Tanboga I, Tas M. OP-180: COMPARISON OF AORTIC ELASTICITY BY TRANSESOPHAGEAL AND TRANSTHORACIC ECHOCARDIOGRAPHY. Int J Cardiol 2011. [DOI: 10.1016/s0167-5273(11)70222-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Colak MC, Kocaturk H, Bayram E, Karaca L. Inferior pancreaticoduodenal artery false aneurysm: a rare cause of gastrointestinal bleeding diagnosed by three-dimensional computed tomography. Singapore Med J 2009; 50:e346-e349. [PMID: 19907872] [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: 05/28/2023]
Abstract
We report a 57-year-old man who presented with a two-month history of persistent epigastric pain associated with indigestion, weight loss and jaundice. Contrast-enhanced computed tomography revealed a large pseudoaneurysm 87 mm x 68 mm in diameter, with its origin from the inferior pancreaticoduodenal artery of the superior mesenteric artery and in continuity with an ectatic gastroduodenal artery. The aneurysmal mass exerted direct pressure over the head of the pancreas, common bile duct and duodenum, causing obstruction. Non-selective abdominal angiography confirmed the aneurysm stemming from the inferior pancreaticoduodenal artery. Because of the obstructive symptoms and the size of the aneurysm, surgery was planned, but the patient refused and died from massive gastrointestinal bleeding one month later.
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Affiliation(s)
- M C Colak
- Department of Cardiovascular Surgery, Firat University School of Medicine, Elazig 23119, Turkey
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Bayram E, Aydin M, Atalay C, Aksakal E, Gundogdu C. THROMBOGENIC ROLE OF ELECTRIC CURRENT ON CORONARY ARTERIES USSING IN SPINE SURGERY: EXPERIMENTAL STUDY. ATHEROSCLEROSIS SUPP 2008. [DOI: 10.1016/s1567-5688(08)70589-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Demirel AH, Basar OT, Ongoren AU, Bayram E, Kisakurek M. Effects of primary suture and fib sealant on hemostasis and liver regeneration in an experimental liver injury. World J Gastroenterol 2008; 14:81-4. [PMID: 18176966 PMCID: PMC2673396 DOI: 10.3748/wjg.14.81] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effects of fib sealant on hemostasis and liver regeneration and intra-abdominal adhesions in an experimental liver injury.
METHODS: Thirty-six Wistar rats were randomly divided into primary suture group (n = 15), fib sealant group (n = 15) and control group (n = 6). A wedge resection was performed on the left lobe of the liver. In primary suture group, liver was sutured using polypropylene material, while fib glue was administrated on the liver surface in fib sealant group.
RESULTS: More intra-abdominal adhesions were observed in the primary suture group compared to the fib sealant group on 3rd (2.50 ± 0.5 vs 0.25 ± 0.5, P = 0.015), 10th (2.75 ± 0.5 vs 0.50 ± 0.6, P = 0.06) and 20th (1.75 ± 0.5 vs 0.70 ± 0.5, P = 0.015) postoperative days. Histopathological scores were better in the fib sealant group in comparison with the primary suture group on 3rd (8.75 ± 0.5 vs 6.75 ± 0.5, P = 0.006), 10th (7.50 ± 1.0 vs 5.5 ± 0.6, P = 0.021) and 20th (6.40 ± 1.7 vs 3.20 ± 1.6, P = 0.025) postoperative days.
CONCLUSION: Out data suggest that fib sealant is preferred over primary suture in appropriate cases including liver trauma since it causes less intra-abdominal adhesions while allowing shorter hemostasis time as assessed in experimental liver trauma.
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Abstract
The authors designed this study to show the effects of orally ingested asbestos on the lungs and pleura. They designated 3 groups of rats: group A (n = 18) was given 1.5 g/L asbestos in water, group B (n = 18) was given 3 g/L asbestos in water, and group C (n = 15), as a control group, was given only water. Histopathological evaluation of lungs and pleura of the rats after 6 months revealed significant mesothelial proliferation and asbestos bodies. After 9 months, more rats exhibited mesothelial proliferation in group B than in group A (p < .05). The number of rats with asbestos bodies in their lungs was greater in group B than in group A. More rats in group B than in group A had asbestos in their spleen. The authors observed mesothelial proliferation in all group B rats at the end of 12 months. Ingested asbestos traveled from the gastrointestinal system to the lungs, likely via a lymphohematological route, leading to mesothelial proliferation, which may lead to malignancies.
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Affiliation(s)
- H Canan Hasanoglu
- Division of Pulmonary Diseases, Ankara Ataturk Training and Research Hospital, Ankara, Turkey.
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Aydin MD, Bayram E, Atalay C, Aydin N, Erdogan AR, Gundogdu C, Diyarbakirli S. The Role of Neuron Numbers of the Petrosal Ganglion in the Determination of Blood Pressure: An Experimental Study. ACTA ACUST UNITED AC 2006; 49:359-61. [PMID: 17323264 DOI: 10.1055/s-2006-955071] [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] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND Baroreceptor reflexes are regulated by nerve terminals of the glossopharyngeal and vagal nerves. The body of pressure-sensitive neurons of these nerves is located in the petrosal ganglion of both nerves. We examined whether there is a relationship between the neuron numbers of the inferior ganglion of the glossopharyngeal nerve and blood pressure values. METHODS Petrosal ganglions were examined in 18 male hybrid rabbits divided into three equal groups: Group A normotensive (TA=90-100 mmHg), Group B hypertensive (TA>100 mmHg); and Group C hypotensive (TA<90 mmHg). After examination of blood pressure for one week, all animals were sacrificed, and the petrosal ganglions extracted bilaterally and examined histopathologically using the physical dissector method. RESULTS The mean (+/-SD) neuronal density was: Group A 8700+/-200, Group B 7800+/-250 and Group C 9800+/-300, respectively. The difference between the groups B and C as compared to A was significant (p<0.01) while the difference between Groups B and C was highly significant (p<0.001). CONCLUSIONS An inverse relationship was noticed between the neuronal density in the petrosal ganglion and blood pressure values with potential implications in the study of the etiology of hypertension.
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Affiliation(s)
- M D Aydin
- Department of Neurosurgery, Medical Faculty, Ataturk University, Erzurum, Turkey.
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Bayram E, Atalay C. Identification of the Culprit Artery Involved in Inferior Wall Acute Myocardial Infarction Using Electrocardiographic Criteria. J Int Med Res 2004; 32:39-44. [PMID: 14997704 DOI: 10.1177/147323000403200106] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We tested whether particular electrocardiogram (ECG) changes can identify the right coronary (RCA) or left circumflex (LCX) artery as the responsible vessel in inferior wall acute myocardial infarction (AMI) in 73 patients. A standard 12-lead ECG was performed within 6 h of onset of chest pain. Coronary angiography was performed between 1 week and 6 weeks after the infarction. RCA and LCX lesions were detected in 53 and 20 patients, respectively. The most useful ECG parameters for implicating the RCA were a higher ST elevation in lead III than lead II (specificity 94%, sensitivity 86%) and an S/R wave ratio > 0.33 plus ST segment depression > 1 mm in lead aVL (specificity 94%, sensitivity 92%). Absence of these criteria was associated with LCX occlusion (specificity 100%, sensitivity 87%). These results indicate that composite ECG criteria are useful in predicting the artery involved in inferior wall AMI.
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Affiliation(s)
- E Bayram
- Department of Cardiology, School of Medicine, Atatürk University, Erzurum, Turkey
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Fahey FH, Grow KL, Webber RL, Harkness BA, Bayram E, Hemler PF. Emission tuned-aperture computed tomography: a novel approach to scintimammography. J Nucl Med 2001; 42:1121-7. [PMID: 11438637] [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: 02/20/2023] Open
Abstract
UNLABELLED Emission tuned-aperture computed tomography (ETACT) is a new approach to acquiring and processing scintimammography data. A gamma camera with a pinhole collimator is used to acquire projections of the radionuclide distribution within the breast. Fiducial markers are used to reconstruct these projections into tomographic slices. Simulation and phantom experiments were performed to evaluate the potential of the ETACT method. METHODS In the simulation study, a hemispheric object of 15 cm in diameter was constructed to model a breast. A ray-tracing technique was used to generate ideal projections. These were blurred and noise was added to create images that resemble scintigraphic images. Tumor size, pinhole size, and target-to-nontarget radioactivity ratios (TNTs) were varied. The simulated projections were reconstructed into slices, and contrast and contrast-to-noise ratios were calculated to evaluate the effect of pinhole size. These results were compared with a simulated planar acquisition of the same object. A preliminary phantom evaluation was performed using an 8-mm "tumor" with a 10:1 TNT to validate the simulation results. RESULTS A 3-mm pinhole was shown by the simulation study to be the optimal size. The ETACT images consistently yielded higher contrast than simulated planar images. The phantom study validated the simulation results and showed the feasibility of ETACT in a simulated clinical environment. CONCLUSION ETACT is shown to be useful for imaging tumors <1 cm in diameter. Because ETACT requires only a gamma camera with a pinhole collimator, it has the potential to be applied in any hospital in a simple, flexible, and practical manner.
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Affiliation(s)
- F H Fahey
- Division of Radiologic Sciences, Wake Forest University School of Medicine, Wake Forest University, Winston-Salem, North Carolina 27157-1061, USA
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Rodríguez H, Muñoz M, Llamas G, Iturralde P, Medeiros A, Delgado L, Mar R, Rucinque F, Bayram E. [Automatic, implantible cardioverter-defibrillator in a patient with chronic Chagas cardiopathy and sustained ventricular tachycardia]. Arch Inst Cardiol Mex 1998; 68:391-9. [PMID: 10365235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
We studied a 48 years old woman, with chronic Chagasic cardiopathy, manifested with cardiomegaly, heart failure and syncope, due to a sustained ventricular tachycardia (SVT) of two different configurations (left bundle branch block and right bundle branch block). During electrophysiological testing, both types of ventricular tachycardia were reproduced. Successful ablation therapy of the right branch of His was performed due to suspicion of the bundle branch reentrant tachycardia, with a left bundle branch block. The patient continued to show SVT episodes, now with right bundle branch block pattern. Cardioverter Defibrillator was implanted. We report this case due to the rare frequency of Chagas' disease, where it could be a cause of heart disease, since the existence of the parasite (trypanosoma cruzi) and its vector (Triatoma) has been identified in some rural and suburban zones in the state of Aguascalientes, Mexico.
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Affiliation(s)
- H Rodríguez
- Departamento de Cardiología del Hospital de Especialidades Miguel Hidalgo, Aguascalientes, México
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Alexánderson E, Altamirano J, Ancona V, Arévila N, Bayram E, Bialostozky D, García R, Izeta A, Mireles M, Puente A, Sepúlveda J. [Guidelines and recommendations of the Mexican Society of Cardiology concerning training in nuclear cardiology]. Arch Inst Cardiol Mex 1997; 67:442-5. [PMID: 9480665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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