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Benli S, Yesil E, Tazeoglu D, Ozcan C, Ozcan IT, Dag A. Changes in cardiac functions in patients treated with parathyroidectomy for secondary hyperparathyroidism. Updates Surg 2024:10.1007/s13304-024-01812-8. [PMID: 38530609 DOI: 10.1007/s13304-024-01812-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 03/04/2024] [Indexed: 03/28/2024]
Abstract
Our study aims to investigate the changes in cardiac functions, especially myocardial performance index (MPI), in patients who underwent parathyroidectomy for secondary hyperparathyroidism. Patients who underwent parathyroidectomy for secondary hyperparathyroidism between June 2010 and September 2021 were analyzed retrospectively. The patients were divided into two groups: those who underwent total parathyroidectomy (group 1) and those who underwent subtotal parathyroidectomy (group 2). The groups were compared according to the echocardiogram findings performed in the preoperative period and the postoperative sixth month. In addition, cardiac structure, and systolic and diastolic functions, especially myocardial performance index, were evaluated by echocardiography and Doppler imaging. Thirty-seven patients were examined; 16 (43.2%) underwent total parathyroidectomy, and 21 (56.8%) had subtotal parathyroidectomy performed. Group 1's mean left ventricular end-systolic diameter (LVES) decreased from 2.53 ± 0.57 to 2.35 ± 0.37 cm after parathyroidectomy. In Group 1, the postoperative value of LVES and end-systolic volume decreased significantly compared to the preoperative period (p = 0.042, p = 0.008, respectively). EF increased from 59.25 ± 0.05 to 67.81 ± 4.04. In Group 1, EF and EV postoperatively increased significantly compared to the preoperative period (p = 0.023, p = 0.021, respectively). The mean MPI decreased from 0.45 ± 0.07 to 0.39 ± 0.04 after parathyroidectomy in group 1. In group 2, it decreased from 0.46 ± 0.06 to 0.40 ± 0.04 (p < 0.001). The present study provides an improvement in myocardial functions after parathyroidectomy. While LVES, EF, ejection volume, end-systolic volume, and MPI improved in both groups, the MPI improvement was more evident in the total parathyroidectomy group.
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Affiliation(s)
- Sami Benli
- Department of General Surgery, Division of Surgical Oncology, Mersin University Medical Faculty, Mersin, Turkey.
| | - Emrah Yesil
- Department of Cardiology, Mersin University Medical Faculty, Mersin, Turkey
| | - Deniz Tazeoglu
- Department of General Surgery, Division of Surgical Oncology, Mersin University Medical Faculty, Mersin, Turkey
| | - Cumhur Ozcan
- Department of General Surgery, Division of Endocrine Surgery, Mersin University Medical Faculty, Mersin, Turkey
| | | | - Ahmet Dag
- Department of General Surgery, Division of Endocrine Surgery, Mersin University Medical Faculty, Mersin, Turkey
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Tazeoglu D, Dag A, Esmer AC, Benli S, Arslan B, Arpaci RB. Is it Possible to Diagnose "Non-Invasive Follicular Thyroid Neoplasm with Papillary-Like Nuclear Features" Preoperatively? Indian J Surg Oncol 2023; 14:368-375. [PMID: 37324293 PMCID: PMC10267065 DOI: 10.1007/s13193-022-01696-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 12/22/2022] [Indexed: 01/01/2023] Open
Abstract
There is no accepted consensus or algorithm for the preoperative diagnosis of non-invasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP) in patients with thyroid nodules. In this study, we evaluated the importance of preoperative neutrophil-to-lymphocyte ratio and platelet-to-lymphocyte ratio in the differential diagnosis of NIFTP. Pathology preparations of 209 patients with a follicular variant of papillary thyroid carcinoma (FVPTC) diagnosed after thyroid surgery in a tertiary health center between January 2010 and January 2020 were re-evaluated. Patients were divided into NIFTP and encapsulated follicular variant papillary thyroid carcinoma (EFVPTC) to compare. Of the patients, 58 (27.7%) were NIFTP, and 151 (72.3%) were EFVPTC. There was no statistically significant difference in terms of age (p = 0.46), tumor size (p = 0.51), gender (p = 0.48), and surgical technique (p = 0.78) between the groups. The probability of the neutrophil-to-lymphocyte ratio (NLR) > 2 is more common in the EFVPTC group. It was statistically significant that the NIFTP group was 1.96 times more likely to have NLR > 2 (OR: 1.96, 95% CI: 1.06-3.63) (p < 0.05). However, there was no risk difference between the groups in terms of the platelet-to-lymphocyte ratio (PLR) (OR: 0.76, 95% CI: 0.41-1.43) (p > 0.05). The diagnosis of NIFTP should be kept in mind in the evaluation of patients whose thyroid fine-needle aspiration (FNA) biopsy results are in the intermediate group. NIFTP exhibits better prognostic findings than classic thyroid papillary cancer and EFVPTC. Therefore, preoperative diagnosis of NIFTP in line with laboratory, ultrasonography, and FNA findings will save the patient from unnecessary overtreatment.
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Affiliation(s)
- Deniz Tazeoglu
- Department of General Surgery, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Ahmet Dag
- Department of General Surgery, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Ahmet Cem Esmer
- Department of General Surgery, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Sami Benli
- Department of General Surgery, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Bilal Arslan
- Department of General Surgery, Faculty of Medicine, Mersin University, Mersin, Turkey
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Ozcan C, Dag A, Arslan B, Ozcan PP, Ustun RO, Turkegun M. Axillary Lymph Nodes in Breast Cancer Patients After COVID-19 Vaccine. Indian J Surg 2023:1-6. [PMID: 37361395 PMCID: PMC10181920 DOI: 10.1007/s12262-023-03804-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 05/01/2023] [Indexed: 06/28/2023] Open
Abstract
One of the side effects of vaccines used to end the COVID-19 epidemic is non-specifically enlarged axillary lymph nodes. Such lymphadenopathy detected during clinical examination of breast cancer patients may require additional imaging or interventional procedures that should not normally be performed. This study has been designed to estimate the incidence of palpable enlarged axillary lymph node in breast cancer patients who had received COVID-19 vaccination in the past 3 months in the same arm as compared to those without vaccination. Breast cancer patients admitted to M.U. Medical Faculty Breast polyclinic between January 2021 and March 2022 were screened, and clinical staging was performed after thorough clinical examination. Among these patients with suspected enlarged axillary lymph node and those undergoing sentinel lymph node biopsy (SLNB), they were divided into two groups as vaccinated and unvaccinated. Age, menopausal status, tumor size, tumor location, surgery, pathology results, hormonal receptor status, and SLNB results were statistically compared with groups. There was no significant difference between groups in terms of age, menopause, tumor size, tumor location, surgery, pathological results, and hormone receptor status. The SLNB being reported as reactive only was 89.1% in the vaccinated group and 73.2% in the non-vaccinated group which was statistically significant different. Reactive lymph nodes were commonly found with an excess of 16% in patients who had received COVID-19 vaccination in the past 3 months. This required caution and additional examination of the axillary lymph nodes in this period.
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Affiliation(s)
- Cumhur Ozcan
- Department of General Surgery, Medical Faculty of Mersin University, Mersin, Turkey
| | - Ahmet Dag
- Department of General Surgery, Medical Faculty of Mersin University, Mersin, Turkey
| | - Bilal Arslan
- Department of General Surgery, Medical Faculty of Mersin University, Mersin, Turkey
| | - Pınar Pelin Ozcan
- Department of Nuclear Medicine, Medical Faculty of Mersin University, Mersin, Turkey
| | - Recep Okan Ustun
- Departman of Plastic Reconstructive and Aesthetic Surgery, Mersin City Training and Research Hospital, Mersin, Turkey
| | - Merve Turkegun
- Department of Biostatistics and Medical Informatics, Medical Faculty of Mersin University, Mersin, Turkey
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Soran A, Ozbas S, Ozcinar B, Isik A, Dogan L, Senol K, Dag A, Karanlik H, Aytac O, Cakmak GK, Dalci K, Dogan M, Sezer YA, Gokgoz S, Ozyar E, Sezgin E. Correction: Intervention for Hepatic and Pulmonary Metastases in Breast Cancer Patients: Prospective, Multi-institutional Registry Study-IMET, Protocol MF 14-02. Ann Surg Oncol 2023; 30:1074. [PMID: 36484906 DOI: 10.1245/s10434-022-12931-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Atilla Soran
- Division of Surgical Oncology, Breast Surgical Oncology, UPMC Magee-Womens Hospital, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA.
| | - Serdar Ozbas
- Breast Surgery, Private Practice, Ankara, Turkey
| | - Beyza Ozcinar
- General Surgery Department, Istanbul University Faculty of Medicine, Istanbul, Turkey
| | - Arda Isik
- General Surgery Department, Training and Research Hospital, Medeniyet University Goztepe, Istanbul, Turkey
| | - Lutfi Dogan
- Department of Surgical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Kazım Senol
- General Surgery Department, Uludag University Faculty of Medicine, Bursa, Turkey
| | - Ahmet Dag
- General Surgery Department, Mersin University Faculty of Medicine, Mersin, Turkey
| | - Hasan Karanlik
- Surgical Oncology Unit, Istanbul University Institute of Oncology, Istanbul, Turkey.,Breast Oncology Unit, American Hospital, Istanbul, Turkey
| | - Ozgur Aytac
- General Surgery Department, Baskent University Faculty of Medicine, Adana, Turkey
| | - Guldeniz Karadeniz Cakmak
- General Surgery Department, Zonguldak Bulent Ecevit University, Faculty of Medicine, Zonguldak, Turkey
| | - Kubilay Dalci
- General Surgery Department, Cukurova University Faculty of Medicine, Adana, Turkey
| | - Mutlu Dogan
- Department of Medical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Yavuz Atakan Sezer
- General Surgery Department, Trakya University, Faculty of Medicine, Edirne, Turkey
| | - Sehsuvar Gokgoz
- General Surgery Department, Uludag University Faculty of Medicine, Bursa, Turkey
| | - Enis Ozyar
- Department of Radiation Oncology, Acibadem Hospitals Group, Istanbul, Turkey
| | - Efe Sezgin
- Department of Food Engineering, Izmir Institute of Technology, Izmir, Turkey
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Dag A, Ozcan NC, Berkesoglu M, Olmez A, Celikcan HDO. Is total thyroidectomy more difficult in Hashimoto's thyroiditis? Ann Ital Chir 2023; 94:563-568. [PMID: 38131419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
AIM Hashimoto's thyroiditis (HT) is accepted as a difficult thyroidectomy for surgeons in practice, but there is not enough data in the literature to support this. The aim of this study was to evaluate whether HT belongs to difficult thyroidectomy class or not. MATERIAL AND METHODS 614 patients who undergoing total thyroidectomy were evaluated. 270 patients with factors that prolong the operation were excluded from the study. Group 1 consisted of 132 patients reported as benign diseases accompanied by HT. Group 2 consisted of 212 patients reported as other benign diseases with no HT as a result of pathology. Patients were statistically analyzed for age, sex, finding for (Recurrent Laryngeal Nerve) RLN, time for reaching RLN, time for operation, transient or permanent RLN injury and other postoperative complications. RESULTS There were statistically significant differences in terms of age, sex, time for operation and time for reaching RLN (respectively; p=0.01, p=0.007, p<0.001 and p<0.001). There was no significant difference between the groups in terms of finding for RLN rates, transient or permanent RLN injury and other postoperative complications (p>0.05). CONCLUSION The mean time for operation and mean time for reaching RLN in patients with HT was significantly longer than in patients with other benign pathology results. It has been scientifically shown that HT should be among the causes of difficult thyroidectomy. This result can provide a legal advantage for surgeons who face such a sad complication. KEY WORDS Hashimoto thyroiditis, Recurrent laryngeal nerve, Thyroiditis.
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Esmer AC, Tazeoglu D, Dag A. Pseudoangiomatous stromal hyperplasia of the breast: Clinical evaluation. Breast Dis 2023; 42:115-119. [PMID: 37066901 DOI: 10.3233/bd-220070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
BACKGROUND Pseudoangiomatous stromal hyperplasia is a rare benign breast stromal proliferative lesion of the breast. Clinical presentation ranges from rapidly growing mass to incidental identification in routine screening. This difference in manifestation and its rarity makes it difficult to be a standard treatment protocol. Therefore, we aimed to share our clinical experience in Pseudoangiomatous stromal hyperplasia. METHODS The files of patients who underwent core biopsy or surgical excision due to a breast mass and resulted in pseudoangiomatous stromal hyperplasia between January 2013 and December 2021 were included in the study. RESULTS 17 patients with a median age of 37 (22-68) were found Pseudoangiomatous stromal hyperplasia confirmed by surgical excision or core biopsy. Chosen treatment option was observation in 8 patients (47.1%), while surgical excision was used in 9 (52.9%) patients. The mean follow-up period was 55.24 ± 26.72 (13-102) months. None of the patients observed the Malignant transformation during the follow-up period. CONCLUSION For Pseudoangiomatous Stromal Hyperplasia of the breast, surgical excision with clean margins or close follow-up after diagnosis confirmation by tissue biopsy is sufficient. Pseudoangiomatous Stromal Hyperplasia is not a risk factor for developing breast cancer.
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Affiliation(s)
- Ahmet Cem Esmer
- Department of Surgical Oncology, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Deniz Tazeoglu
- Department of Surgical Oncology, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Ahmet Dag
- Department of Surgical Oncology, Faculty of Medicine, Mersin University, Mersin, Turkey
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Soran A, Ozbas S, Ozcinar B, Isik A, Dogan L, Senol K, Dag A, Karanlik H, Aytac O, Karadeniz Cakmak G, Dalci K, Dogan M, Sezer YA, Gokgoz S, Ozyar E, Sezgin E. ASO Visual Abstract: Intervention for Hepatic and Pulmonary METastases in Breast Cancer Patients-Prospective, Multi-Institutional Registry Study: IMET; Protocol MF 14-02. Ann Surg Oncol 2022; 29:6337-6338. [PMID: 35933547 DOI: 10.1245/s10434-022-12320-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Atilla Soran
- Division of Surgical Oncology, Breast Surgical Oncology, UPMC Magee-Womens Hospital, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA.
| | - S Ozbas
- Breast Surgery, Private Practice, Ankara, Turkey
| | - B Ozcinar
- General Surgery Department, Istanbul University Faculty of Medicine, Istanbul, Turkey
| | - A Isik
- General Surgery Department, Training and Research Hospital, Medeniyet University Goztepe, Istanbul, Turkey
| | - L Dogan
- Department of Surgical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - K Senol
- General Surgery Department, Uludag University Faculty of Medicine, Bursa, Turkey
| | - A Dag
- General Surgery Department, Mersin University Faculty of Medicine, Mersin, Turkey
| | - H Karanlik
- Surgical Oncology Unit, Istanbul University Institute of Oncology, Istanbul, Turkey
- Breast Oncology Unit, American Hospital, Istanbul, Turkey
| | - O Aytac
- General Surgery Department, Baskent University Faculty of Medicine, Adana, Turkey
| | - G Karadeniz Cakmak
- General Surgery Department, Zonguldak Bulent Ecevit University, Faculty of Medicine, Zonguldak, Turkey
| | - K Dalci
- General Surgery Department, Cukurova University Faculty of Medicine, Adana, Turkey
| | - M Dogan
- Department of Medical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Y A Sezer
- General Surgery Department, Trakya University Faculty of Medicinee, Edirne, Turkey
| | - S Gokgoz
- General Surgery Department, Uludag University Faculty of Medicine, Bursa, Turkey
| | - E Ozyar
- Department of Radiation Oncology, Acibadem Hospitals Group, Istanbul, Turkey
| | - E Sezgin
- Department of Food Engineering, Izmir Institute of Technology, Izmir, Turkey
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Soran A, Ozbas S, Ozcinar B, Isik A, Dogan L, Senol K, Dag A, Karanlik H, Aytac O, Karadeniz Cakmak G, Dalci K, Dogan M, Sezer YA, Gokgoz S, Ozyar E, Sezgin E. Intervention for Hepatic and Pulmonary Metastases in Breast Cancer Patients: Prospective, Multi-institutional Registry Study-IMET, Protocol MF 14-02. Ann Surg Oncol 2022; 29:6327-6336. [PMID: 35876920 DOI: 10.1245/s10434-022-12239-z] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 07/06/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND One fourth of early-stage breast cancer cases become metastatic during the follow-up period. Limited metastasis is a metastatic disease condition in which the number of metastatic sites and the extent of the disease both are limited, and the disease is amenable to metastatic intervention. This prospective study aimed to evaluate intervention for limited metastases in the lung, liver, or both. METHODS The study enrolled luminal A/B and/or human epidermal growth factor receptor 2 (HER2)-neu+ patients with operable lung and/or liver metastases in the follow-up assessment after completion of primary breast cancer treatment and patients with a diagnosis of metastasis after 2014. Demographic, clinical, tumor-specific, and metastasis detection-free interval (MDFI) data were collected. Bone metastasis in addition to lung and liver metastases also was included in the analysis. The patients were divided into two groups according to the method of treatment for metastases: systemic therapy alone (ST) group or intervention (IT) group. RESULTS Until June 2020, 200 patients were enrolled in the study. The demographic data were similar between the two groups. The median follow-up time was 77 months (range 55-107 months) in the IT group (n = 119; 59.5%) and 57 months (range 39-84) in the ST-only group (n = 81; 40.5%). The median MDFI was 40 months (range 23-70 months) in the IT group, and 35 months (range 13-61 months) in the ST-only group (p = 0.47). The groups had similar surgeries for the primary tumor and axilla. Most of the patients had liver metastases (49.5%, n = 99), and 42% (n = 84) of the patients had lung metastases. Both lung and liver metastases were found in 8.5% (n = 17) of the patients. The primary tumor was estrogen receptor/progesterone receptor-positive in 75% (n = 150) of the patients, and 32% (n = 64) of the patients had HER2-neu+ tumors. Metastatic-site resection was performed for 32% (n = 64) of the patients, and 27.5% (n = 55) of the patients underwent metastatic ablative interventions. In the Kaplan-Meier survival analysis, the hazard of death (HoD) was 56% lower in the IT group than in the ST-only group (hazard ratio [HR], 0.44; 95% confidence interval [CI] 0.26-0.72; p = 0.001). The HoD was lower in the IT group than in the ST-only group for the patients younger than 55 years (HR, 0.32; 95% CI 0.17-0.62; p = 0.0007). In the multivariable Cox regression model, HoD was significantly lower for the patients who underwent intervention for metastases and had an MDFI longer than 24 months, but their liver metastases doubled the risk of death compared with lung metastases. CONCLUSION Metastasis-directed interventions have reduced the risk of death for patients with limited lung/liver metastases who are amenable to interventions after completion of primary cancer treatment. For a select group of patients, such as those with luminal A/B or HER2-neu+ breast cancer who are younger than 55 years with limited metastases to the lung and liver or an MDFI longer than 24 months, surgical or ablative therapy for metastases should be considered and discussed on tumor boards.
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Affiliation(s)
- Atilla Soran
- Division of Surgical Oncology, Breast Surgical Oncology, UPMC Magee-Womens Hospital, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA.
| | - S Ozbas
- Breast Surgery, Private Practice, Ankara, Turkey
| | - B Ozcinar
- General Surgery Department, Istanbul University Faculty of Medicine, Istanbul, Turkey
| | - A Isik
- General Surgery Department, Training and Research Hospital, Medeniyet University Goztepe, Istanbul, Turkey
| | - L Dogan
- Department of Surgical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - K Senol
- General Surgery Department, Uludag University Faculty of Medicine, Bursa, Turkey
| | - A Dag
- General Surgery Department, Mersin University Faculty of Medicine, Mersin, Turkey
| | - H Karanlik
- Surgical Oncology Unit, Istanbul University Institute of Oncology, Istanbul, Turkey.,Breast Oncology Unit, American Hospital, Istanbul, Turkey
| | - O Aytac
- General Surgery Department, Baskent University Faculty of Medicine, Adana, Turkey
| | - G Karadeniz Cakmak
- General Surgery Department, Zonguldak Bulent Ecevit University, Faculty of Medicine, Zonguldak, Turkey
| | - K Dalci
- General Surgery Department, Cukurova University Faculty of Medicine, Adana, Turkey
| | - M Dogan
- Department of Medical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Y A Sezer
- Department of Medical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - S Gokgoz
- General Surgery Department, Uludag University Faculty of Medicine, Bursa, Turkey
| | - E Ozyar
- Department of Radiation Oncology, Acibadem Hospitals Group, Istanbul, Turkey
| | - E Sezgin
- Department of Food Engineering, Izmir Institute of Technology, Izmir, Turkey
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Oztas M, Bektaş M, Karacan I, Aliyeva N, Dag A, Aghamuradov S, Cevirgen SB, Sari S, Bolayirli M, Can G, Hatemi G, Seyahi E, Ozdogan H, Gul A, Ugurlu S. AB1082 FREQUENCY AND SEVERITY OF COVID-19 IN PATIENTS WITH VARIOUS RHEUMATIC DISEASES TREATED REGULARLY WITH COLCHICINE OR HYDROXYCHLOROQUINE. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.83] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundSeveral anti-inflammatory drugs which were targeted different mechanisms and investigated for both prevention and treatment for COVID-19.ObjectivesThe current study aimed to investigate whether patients regularly using colchicine or hydroxychloroquine (HCQ) have an advantage of protection from COVID-19 or developing less severe disease.MethodsPatients who were taking colchicine or HCQ regularly for a rheumatic disease including Familial Mediterranean Fever, Behçet’s syndrome, Systemic Lupus Erythematosus, Rheumatoid Arthritis and Sjogren’s syndrome as well as their healthy household contacts as the control group were included into the study. The clinical data regarding COVID-19 were collected using a standard form, and serum samples were analyzed for anti-SARS-COV-2 nucleocapsid IgG. Patients treated with any biologic or immunosuppressive treatments were not included into the study.ResultsA total of 635 regular colchicine users with their 643 household contacts and 317 regular HCQ users with their 333 household contacts were analyzed. Anti-SARS-Cov2 IgG was positive in 43 (6.8%) regular colchicine users and 35 (5.4%) household contacts (OR=1.3; 95% CI:0.8-2; p=0.3) (Table 1). COVID-19 related symptoms were described by 29 (67.4%) of the patients and 17 (48.6%) household contacts (OR=2.2; 95% CI:0.9-5.5; p=0.09), and hospital admission was observed in five (11.6%) and one (2.9%) of these subjects (OR=4.5; 95% CI:0.5-40.2; p=0.1), respectively (Figure 1). Seropositive subjects were observed in 22 (6.9%) regular HCQ users and 24 (7.2%) household contacts (OR=1.1; CI:0.6-1.9; p=0.8) (Table 1). COVID-19-related symptoms occurred in 16 (72.7%) of the 22 patients and 12 (50%) of 24 household contacts (OR=2.7; 95% CI:0.8-9.1; p=0.1). Three patients (13.6%) were admitted to hospital, while one household contact (4.2%) was hospitalized (OR=3.6; 95% CI:0.3- 37.8; p=0.2) (Figure 1). Disease-specific analyses disclosed that there was no significant difference in terms of COVID-19 frequency and severity between a particular disease subset and household contacts (Table 1). Univariate logistic regression analysis showed no effect of age and gender on the SARS-CoV-2 seroprevalence rate among regular colchicine or HCQ users and household contacts (p=0.2 and p=0.7, respectively for colchicine users versus contacts, p=0.7 and p=0.3, respectively for HCQ users versus contacts).Figure 1.Severity of COVID-19 in regular colchicine or HCQ users and these patients’ household contactsTable 1.Disease specific outcomes of the entire cohortVariableFMF (n=373)FMF HHC* (n=386)PBehcet Patients (n=262)Behcet HHC (N=257)PSLE Patients (N=197)SLE HH (n=221)pRA Patients (n=79)RA HH (n=73)PSjögren patients (N=41)Sjögren HH (N=39)pAge, mean ± SD years36.4 ± 13.236.3 ± 16.10.942.9 ± 11.438.1 ± 15.20.00144.2 ± 12.639.4 ± 170.00253.9 ± 10.340.3 ± 16.60.00157.1 ± 11.246.2 ± 16.10.001Gender, n (%) Female249 (66.8)173 (44.8)0.001160 (61.1)118 (45.9)0.001184 (93.4)75 (33.9)0.00173 (61.1)20 (27.4)0.00141 (100)10 (25.1)0.001Positive antibody to SARS-COV-2, n (%)25 (6.7)23 (5.9)0.618 (6.9)12 (4.7)0.314 (7.1)19 (8.6)0.64 (5.1)2 (2.7)0.54 (9.8)3 (7.7)0.9Symptomatic COVID-19 in seropositive cases, n (%)18 (72)10 (43.4)0.0411 (61.1)7 (58.3)0.611 (78.6)9 (47.3)0.073 (75)0 (0)0.42 (50)3 (100)0.4Hospital admission in seropositive cases, n (%)1 (3.8)0 (0)-4 (22.2)1 (8.3)0.32 (14.3)0 (0)0.21 (25)0 (0)-1 (25)1 (33.3)0.3Mean colchicine dose, mg/day ± SD1.5 ± 0.4--1.4 ±0.4-----------Mean duration of colchicine usage, years ± SD11.3 ± 8.3--10.4 ± 7.7-----------Mean HCQ dose, mg/day ± SD------263.6 ± 95.1--255 ± 90.8--273.7 ± 132.5--Mean duration of HCQ usage, years ± SD------10.1 ± 6.6--7.3 ± 5.2--9 ± 6.3--HCQ hydroxychloroquine, FMF familial mediterranean fever, HHC household contacts, RA rheumatoid arthritis, SLE systemic lupus erythematosusConclusionBeing on a regular treatment of colchicine or HCQ was not resulted in the prevention of COVID-19 or amelioration of its manifestations.Disclosure of InterestsNone declared
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Tazeoglu D, Esmer AC, Arslan B, Dag A. Did the COVID-19 Pandemic Affect the Management of Patients With Acute Appendicitis? Cureus 2022; 14:e24631. [PMID: 35664393 PMCID: PMC9152159 DOI: 10.7759/cureus.24631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2022] [Indexed: 12/02/2022] Open
Abstract
Background The coronavirus disease 2019 (COVID-19) pandemic has changed the lives and habits of people all over the world. In this study, it was planned to investigate the effect of the COVID-19 pandemic on the diagnosis and treatment duration of acute appendicitis (AA), morbidity and mortality. Methods The data of patients who were operated on with the diagnosis of AA in our clinic between March 2019 and March 2021, divided into pre-COVID and post-COVID periods, were analyzed. Patients diagnosed with AA, who had the only appendectomy perioperatively, and who had complete preoperative blood analysis and radiological imaging data were included in the study. Results The time from the onset of symptoms to the time of admission to the hospital was statistically significantly longer than in the post-COVID group (p=0.04). During the COVID-19 pandemic period, the use of ultrasonography was statistically significantly reduced (p<0.01); computed tomography use increased (p<0.001). Laparoscopic appendectomy as a surgical technique decreased statistically significantly during the pandemic period (p=0.02). Postoperative complications and the postoperative complication severity degrees were not statistically significant between periods (p=0.24, p=0.68). The risk for the occurrence of postoperative complications in COVID-19 positive patients was statistically higher (p=0.01) (OR: 9.38 95% CI: 1.96 - 44.88). Conclusion The COVID-19 pandemic had caused delays in the admission and diagnosis of patients who might need surgery due to AA. Postoperative complication frequency and complication severity classification were not affected. COVID-19 positivity was a risk factor for complex AA presenting with periappendicular abscess, gangrenous and perforated appendix.
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Bozdereli Berikol G, Berikol G, Ayrik C, Kose A, Bozkurt Babus S, Tamer Gumus L, Bozdogan Arpaci R, Dag A, Ayan E, Gorur A. Antioxidant and neuroprotective effects of l-arginine administration after traumatic brain injury and hemorrhagic shock in rats. Turk Neurosurg 2022; 33:379-385. [DOI: 10.5137/1019-5149.jtn.35263-21.2] [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] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Tazeoglu D, Dag A. Effect of treatment of pilonidal sinus with phenol on patients' clinical condition and quality of life. Ann Ital Chir 2022; 93:385-390. [PMID: 36155543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
BACKGROUND Pilonidal sinus is a common disease. Curative treatment is surgical excision. However, minimally invasive surgery is preferred day by day. Our study aimed to compare the effects of phenol and excision on postoperative results and quality of life in the treatment of pilonidal sinus. METHODS The patients who underwent surgery with the diagnosis of the pilonidal sinus in our clinic between June 2019 and June 2021 were examined. Demographic data, anthropometric measurements, clinical information, treatment, and postoperative data of the patients were recorded. Daily pain follow-up with daily visceral pain scale (VPS) was performed in the first ten days postoperatively, and a short form 36 (SF-36) questionnaire was used in the first and fourth weeks. The patients were grouped as phenol and excision groups and compared. RESULTS The study included 145 patients. Phenol was applied to 83 (57.2%) patients, and excision was applied to 62 (42.8%) patients. There was no statistically significant difference between the groups regarding age, gender, BMI, number of pilonidal sinuses, and family history (p>0.05). Return to work, painless walking and sitting on the toilet, and mean daily VPS values in the phenol group were significantly shorter than the excision group (p<0.05). All subscale values in the postoperative first week SF-36 results were significantly higher than in the excision group (p<0.001) in the phenol group. CONCLUSION Phenol is effective in the treatment of pilonidal sinus. Despite excision, treatment with phenol affects the patient's quality of life less in the early postoperative period. KEY WORDS Minimally invasive surgery , Pilonidal sinus, Phenol, Quality of life.
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Soran A, Dogan L, Ozbas S, Isık A, Trablus D, Demirci U, Karanlık H, Soyder A, Dag A, Bilici A, Dogan M, Koksal H, Sendur M, Gulcelik M, Maralcan G, Cabioglu N, Yeniay L, Utkan Z, Simsek T, Karadurmus N, Daglar G, Yıldız B, Uras C, Tukenmez M, Yildirim A, Kutun S, Ozaslan C, Karaman N, Akcay M, Toktas O, Sezgin E. The effect of primary surgery in patients with stage IV breast cancer with bone metastasis only (protocol bomet MF14-01); a multi-center, registry study. Breast 2021. [DOI: 10.1016/s0960-9776(21)00214-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Soran A, Dogan L, Isik A, Ozbas S, Trabulus DC, Demirci U, Karanlik H, Soyder A, Dag A, Bilici A, Dogan M, Koksal H, Sendur MAN, Gulcelik MA, Maralcan G, Cabioglu N, Yeniay L, Utkan Z, Simsek T, Karadurmus N, Daglar G, Yildiz B, Uras C, Tukenmez M, Yildirim A, Kutun S, Ozaslan C, Karaman N, Akcay MN, Toktas O, Sezgin E. The Effect of Primary Surgery in Patients with De Novo Stage IV Breast Cancer with Bone Metastasis Only (Protocol BOMET MF 14-01): A Multi-Center, Prospective Registry Study. Ann Surg Oncol 2021; 28:5048-5057. [PMID: 33532878 DOI: 10.1245/s10434-021-09621-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 01/04/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND More evidence shows that primary surgery for de novo metastatic breast cancer (BC) prolongs overall survival (OS) in selected cases. The aim of this study was to evaluate the role of locoregional treatment (LRT) in BC patients with de novo stage IV bone only metastasis (BOM). METHODS The prospective, multicenter registry study BOMET MF14-01 was initiated in May 2014. Patients with de novo stage IV BOM BC were divided into two groups: those receiving systemic treatment (ST group) and those receiving LRT (LRT group). Patients who received LRT were further divided into two groups: ST after LRT (LRT + ST group) and ST before LRT (ST + LRT group). RESULTS We included 505 patients in this study; 240 (47.5%) patients in the ST group and 265 (52.5%) in the LRT group. One hundred and thirteen patients (26.3%) died in the 34-month median follow-up, 85 (35.4%) in the ST group and 28 (10.5%) in LRT group. Local progression was observed in 39 (16.2%) of the patients in the ST group and 18 (6.7%) in the LRT group (p = 0.001). Hazard of death was 60% lower in the LRT group compared with the ST group (HR 0.40, 95% CI 0.30-0.54, p < 0.0001). CONCLUSION In this prospectively maintained registry study, we found that LRT prolonged survival and decreased locoregional recurrence in the median 3-year follow-up. Timing of primary breast surgery either at diagnosis or after ST provided a survival benefit similar to ST alone in de novo stage IV BOM BC patients.
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Affiliation(s)
- Atilla Soran
- Division of Surgical Oncology, UPMC (University of Pittsburgh Medical Center) Magee-Womens Hospital, Pittsburgh, USA.
| | - Lutfi Dogan
- Department of Surgical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Arda Isik
- Department of Surgery, Erzincan Binali Yıldırım University, Erzincan, Turkey
| | - Serdar Ozbas
- Private, Breast and Endocrine Surgeon, Ankara, Turkey
| | - Didem Can Trabulus
- Department of Surgery, Istanbul Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Umut Demirci
- Department of Medical Oncology, Memorial Ankara Hospital, University of Uskudar School of Medicine, Istanbul, Turkey
| | - Hasan Karanlik
- Surgical Oncology Unit, Istanbul University Institute of Oncology, Istanbul, Turkey
| | - Aykut Soyder
- Department of Surgery, School of Medicine, Adnan Menderes University, Aydın, Turkey
| | - Ahmet Dag
- Department of Surgery, School of Medicine, Mersin University, Mersin, Turkey
| | - Ahmet Bilici
- Department of Medical Oncology, School of Medicine, Medipol University, Istanbul, Turkey
| | - Mutlu Dogan
- Department of Medical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Hande Koksal
- Department of Surgery, Konya Training and Research Hospital, University of Health Sciences, Konya, Turkey
| | - Mehmet Ali Nahit Sendur
- Department of Medical Oncology, School of Medicine, Yıldırım Beyazit University, Ankara, Turkey
| | - Mehmet Ali Gulcelik
- Department of Surgical Oncology, Gülhane Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Gokturk Maralcan
- Department of Surgery, School of Medicine, Sanko University, Gaziantep, Turkey
| | - Neslihan Cabioglu
- Department of Surgery, School of Medicine Istanbul University, Istanbul, Turkey
| | - Levent Yeniay
- Department of Surgery, School of Medicine, Ege University, Izmir, Turkey
| | - Zafer Utkan
- Department of Surgery, School of Medicine, Kocaeli University, İzmit, Turkey
| | - Turgay Simsek
- Department of Surgery, School of Medicine, Kocaeli University, İzmit, Turkey
| | - Nuri Karadurmus
- Department of Medical Oncology, Gülhane Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Gul Daglar
- Private, Breast and Endocrine Surgeon, Ankara, Turkey
| | - Birol Yildiz
- Department of Medical Oncology, Gülhane Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Cihan Uras
- Department of Surgery, Acibadem University School of Medicine, Istanbul, Turkey
| | - Mustafa Tukenmez
- Department of Surgery, School of Medicine Istanbul University, Istanbul, Turkey
| | - Ahmet Yildirim
- Department of Medical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Suat Kutun
- Department of Surgical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Cihangir Ozaslan
- Department of Surgical Oncology, Ankara Oncology Training and Research Hospital, University of Health Sciences, Ankara, Turkey
| | - Niyazi Karaman
- Department of Surgery, Ankara Oncology Training and Research Hospital, Ankara, Turkey
| | - Müfide Nuran Akcay
- Department of Surgery, School of Medicine, Atatürk University, Erzurum, Turkey
| | - Osman Toktas
- Department of Surgery, School of Medicine, Yuzuncuyıl University, Van, Turkey
| | - Efe Sezgin
- Department of Food and Engineering, Faculty of Engineering, Izmir Institute of Technology, Izmir, Turkey
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Arslan B, Dag A, Satıcı FEG, Arpacı RB, Ozdemir AA. Non invasive follicular thyroid neoplasm with papillary-like nuclear features (NIFT-P). A clinic evaluation of novel nomenclature. Ann Ital Chir 2021; 92:479-487. [PMID: 34584032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
AIM We aimed to find out unnecessarily overdiagnosed and overtreated patients, their preventable morbidities, expenditures which might not have occurred in the last decade concerning newly proposed nomenclature MATERIAL AND METHODS: Among 1553 patients operated between 2010-2019, 197 were recorded. Pathology specimens were re-evaluated by two experienced pathologists to reveal those patients who could have diagnosed as NIFT-P. RESULTS According to the changes first suggested by Nikiforov in 2016 and partially revised in 2018; 55 of 197 patients were diagnosed with NIFT-P. Four (7.2%) patients had NIFT-P (operated after 2016), 14 patients (25.5%) had follicular adenoma, 13 patients (23.6%) had unknown malign potential, five patients (9.1%) had papillary microcarcinoma, two patients (3.6%) had papillary microcarcinoma encapsulated, five patients (9.1%) had papillary carcinoma follicular and two patients (3.6%) had papillary carcinoma encapsulated. 40 patients (72.7%) underwent thyroidectomy (bilateral total), 12 patients (21.8%) thyroidectomy (lobectomy, unilateral), two patients (3.6%) thyroidectomy (completion, total) and one patient (1.8%) neck dissection + thyroidectomy (bilateral, total). DISCUSSION The follicular variant of the papillary thyroid carcinoma was re-defined with a novel nomenclature as a noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFT-P) according to its indolent behavior that did not require aggressive treatment,so lobectomy is sufficient, was suggested in 2016. CONCLUSIONS We found out that if we hadn't applied thyroidectomy (total or completion) to those 43 patients concerning new nomenclature, we could have prevented complications (2 patients, %3,6) and cut down the expenses caused by overtreatment in the last decade. NIFT-P has an excellent prognosis for its low locoregional or distant recurrence, so lobectomy is sufficient. KEY WORDS Bethesda, NIFT-P, Total Thyroidectomy, Complication.
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Dag A, Zipori I, Bustan A, Kerem Z. Olive paste oil content on a dry weight basis (OPDW): an indicator for optimal harvesting time in modern olive orchards. Grasas y Aceites 2016. [DOI: 10.3989/gya.0764152] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Yildirim A, Dag A, Ocal K, Gumus L, Comelekoglu U, Pfeifer E, Tasdelen B, Gorur A. MON-PP037: The Effects of Beta-Hydroxy Beta-Methylbutyrate (HMB) on the Healing of Colonic Anastomosis in an Experimental Sepsis Model Induced by Lipopolysaccharides in Rats. Clin Nutr 2015. [DOI: 10.1016/s0261-5614(15)30469-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ismi O, Arpaci RB, Berkesoglu M, Dag A, Sezer E, Bal KK, Vayısoğlu Y. Calcitonin-negative neuroendocrine tumor of thyroid gland mimicking anaplastic carcinoma: an unusual entity. Gland Surg 2015; 4:344-9. [PMID: 26312221 DOI: 10.3978/j.issn.2227-684x.2015.01.02] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Accepted: 12/08/2014] [Indexed: 01/14/2023]
Abstract
Medullary thyroid cancer is the neuroendocrine tumor (NET) of thyroid with mostly both secreting calcitonin and immunohistochemically showing calcitonin positivity. Occasionally; NETs of thyroid may have little or no calcitonin expression. We present a case of serum calcitonin negative and immunohistochemically calcitonin-negative staining tumor with positive reaction to neuroendocrine markers synaptophysin and chromogranin-A. The patient's right vocal cord was paralytic and thyroid mass was huge with descending to thorax till hilar region. We discussed diagnostic difficulties and way of treatment about NETs of thyroid with the light of current literature with this case.
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Affiliation(s)
- Onur Ismi
- 1 Department of Otorhinolaryngology, 2 Department of Pathology, Faculty of Medicine, 3 Department of General Surgery, 4 Department of Medical Oncology, Faculty of Medicine, University of Mersin, Mersin, Turkey
| | - Rabia Bozdogan Arpaci
- 1 Department of Otorhinolaryngology, 2 Department of Pathology, Faculty of Medicine, 3 Department of General Surgery, 4 Department of Medical Oncology, Faculty of Medicine, University of Mersin, Mersin, Turkey
| | - Mustafa Berkesoglu
- 1 Department of Otorhinolaryngology, 2 Department of Pathology, Faculty of Medicine, 3 Department of General Surgery, 4 Department of Medical Oncology, Faculty of Medicine, University of Mersin, Mersin, Turkey
| | - Ahmet Dag
- 1 Department of Otorhinolaryngology, 2 Department of Pathology, Faculty of Medicine, 3 Department of General Surgery, 4 Department of Medical Oncology, Faculty of Medicine, University of Mersin, Mersin, Turkey
| | - Emel Sezer
- 1 Department of Otorhinolaryngology, 2 Department of Pathology, Faculty of Medicine, 3 Department of General Surgery, 4 Department of Medical Oncology, Faculty of Medicine, University of Mersin, Mersin, Turkey
| | - Kemal Koray Bal
- 1 Department of Otorhinolaryngology, 2 Department of Pathology, Faculty of Medicine, 3 Department of General Surgery, 4 Department of Medical Oncology, Faculty of Medicine, University of Mersin, Mersin, Turkey
| | - Yusuf Vayısoğlu
- 1 Department of Otorhinolaryngology, 2 Department of Pathology, Faculty of Medicine, 3 Department of General Surgery, 4 Department of Medical Oncology, Faculty of Medicine, University of Mersin, Mersin, Turkey
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Dag A, Colak T, Koc O, Ayaz L, Comelekoglu U, Serinsoz-Pfeiffer E. Soybean oil prevents peritoneal adhesions without impairing colonic anastomotic healing. Surgical Practice 2015. [DOI: 10.1111/1744-1633.12120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ahmet Dag
- Department of General Surgery; Mersin University; Mersin Turkey
| | - Tahsin Colak
- Department of General Surgery; Mersin University; Mersin Turkey
| | - Okay Koc
- Department of General Surgery; Mersin University; Mersin Turkey
| | - Lokman Ayaz
- Department of Biochemistry; Trakya University; Edirne Turkey
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Dag A, Ketani M, Zengingul A, Ketani Ş. The Effects of Sialoadenectomy and Epidermal Growth Factor on Gingival Tissue in Rats: An Ultrastructural Study. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2008.10817597] [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: 10/25/2022] Open
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Dag A, Akca T, Ersoz G, Cinel L. Aspergillosis of thyroid gland managed by thyroidectomy. Surgical Practice 2013. [DOI: 10.1111/j.1744-1633.2012.00636.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ahmet Dag
- Department of General Surgery; Mersin University; Mersin; Turkey
| | - Tamer Akca
- Department of General Surgery; Mersin University; Mersin; Turkey
| | - Gulden Ersoz
- Department of Infectious Disease; Mersin University; Mersin; Turkey
| | - Leyla Cinel
- Department of Pathology; Mersin University; Mersin; Turkey
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Dag A, Akca T, Ersoz G, Cinel L. Aspergillosis of Thyroid Gland Managed by Thyroidectomy. Surgical Practice 2013. [DOI: 10.1111/1744-1633.12025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ahmet Dag
- Departments of General Surgery Medical Faculty of Mersin University, Mersin; TURKEY
| | - Tamer Akca
- Departments of General Surgery Medical Faculty of Mersin University, Mersin; TURKEY
| | - Gulden Ersoz
- Departments of Infectious Disease Medical Faculty of Mersin University, Mersin; TURKEY
| | - Leyla Cinel
- Departments of Pathology Medical Faculty of Mersin University, Mersin; TURKEY
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Dag A, Serinsoz E, Ocal K. Apocrine carcinoma of the male breast. Surgical Practice 2012. [DOI: 10.1111/j.1744-1633.2012.00619.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ahmet Dag
- Departments of General Surgery; Medical Faculty of Mersin University; Mersin; Turkey
| | - Ebru Serinsoz
- Pathology; Medical Faculty of Mersin University; Mersin; Turkey
| | - Koray Ocal
- Departments of General Surgery; Medical Faculty of Mersin University; Mersin; Turkey
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Sozutek A, Colak T, Dag A, Olmez T. Comparison of standard 4-row versus 6-row3-D linear cutter stapler in creation of gastrointestinal system anastomoses: a prospective randomized trial. Clinics (Sao Paulo) 2012; 67:1035-8. [PMID: 23018300 PMCID: PMC3438243 DOI: 10.6061/clinics/2012(09)09] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Accepted: 05/10/2012] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE This prospective study was conducted to compare the clinical outcomes of a 6-row 3-D linear cutter with the standard 4-row linear cutter in patients who underwent elective gastrointestinal surgery anastomosis. METHOD Patients who underwent elective open gastrointestinal surgery that included stapled anastomosis using a linear cutter (Proximate®, Ethicon Endo-Surgery, Cincinnati, OH) between January 2011 and May 2011 were included in the study. The patients were randomly assigned to two groups according to the linear cutter that was used in the surgery: the standard 4-row cutter (the S group) or the new 6-row cutter (the N group). The groups were compared based on the patient demographic data, the laboratory parameters, the preoperative diagnosis, the surgery performed, the operation time, intra-or postoperative complications, the time to oral tolerance and the length of the hospital stay. RESULTS The S group included 11 male and nine female patients with a mean age of 65 ± 12 (35-84) years, while the N group included 13 male and eight female patients with a mean age of 62 ± 11 (46-79) years (p =0.448, p = 0.443, respectively). Anastomotic line bleeding was observed in eight (40%) patients in the S group and in one (4.7%) patient in the N group (p = 0.006). Dehiscence of the anastomosis line was observed in two (10%) patients in the S group and none in the N group (p =0.131). Anastomotic leakage developed in three (15%) patients in the S group and in one (4.7%) patient in the N group (p = 0.269). The mean hospital stay was 12.65 ± 6.1 days in theS group and 9.52 ± 2.9 days in the N group (p = 0.043). CONCLUSION The 6-row 3-D linear cutter is a safe and easily applied instrument that can be used to create anastomoses in gastrointestinal surgery. The new stapler provides some usage benefits and is also superior to the standard linear cutter with regard to anastomotic line bleeding.
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Affiliation(s)
- Alper Sozutek
- Department of Gastroenterological Surgery, Mersin University Medical Faculty, Mersin, Turkey.
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Aviani I, Raviv M, Hadar Y, Saadi I, Dag A, Ben-Gal A, Yermiyahu U, Zipori I, Laor Y. Effects of harvest date, irrigation level, cultivar type and fruit water content on olive mill wastewater generated by a laboratory scale 'Abencor' milling system. Bioresour Technol 2012; 107:87-96. [PMID: 22226593 DOI: 10.1016/j.biortech.2011.12.041] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 11/24/2011] [Accepted: 12/08/2011] [Indexed: 05/31/2023]
Abstract
Olive mill wastewaters (OMW) were obtained at laboratory scale by milling olives from four cultivars grown at different irrigation levels and harvested at different times. Samples were compared based on wastewater quantity, pH, suspended matter, salinity, organic load, total phenols, NPK, and phytotoxicity. Principal component analysis discriminated between harvest times, regardless of olive cultivar, indicating substantial influence of fruit ripeness on OMW characteristics. OMW properties were affected both by the composition and the extraction efficiency of fruit water. As the fruit water content increased, the concentrations of solutes in the fruit water decreased, but the original fruit water composed a larger portion of the total wastewater volume. These contradicting effects resulted in lack of correlation between fruit water content and OMW properties. The significant effects shown for fruit ripeness, irrigation and cultivar on OMW characteristics indicate that olive horticultural conditions should be considered in future OMW management.
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Affiliation(s)
- I Aviani
- Department of Microbiology and Plant Pathology, Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
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Dag A, Ben-Gal A, Zipori I, Yermiyahu U, Birger R, Abd El Hadi F, Lin A. ARE THERE BORON DEFICIENCIES IN ALMOND ORCHARDS IN ISRAEL? Acta Hortic 2011:221-227. [DOI: 10.17660/actahortic.2011.912.32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Dag A, Ozcan T, Turkmenoglu O, Colak T, Karaca K, Canbaz H, Dirlik M, Saribay R. Spontaneous rectus sheath hematoma in patients on anticoagulation therapy. ULUS TRAVMA ACIL CER 2011; 17:210-4. [DOI: 10.5505/tjtes.2011.84669] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Dag A, Colak T, Turkmenoglu O, Gundogdu R, Aydin S. A randomized controlled trial evaluating early versus traditional oral feeding after colorectal surgery. Clinics (Sao Paulo) 2011; 66:2001-5. [PMID: 22189721 PMCID: PMC3226591 DOI: 10.1590/s1807-59322011001200001] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Accepted: 06/30/2011] [Indexed: 11/21/2022] Open
Abstract
OBJECTIVE This prospective randomized clinical study was conducted to evaluate the safety and tolerability of early oral feeding after colorectal operations. METHODS A total of 199 patients underwent colorectal surgery and were randomly assigned to early feeding (n = 99) or a regular diet (n = 100). Patients' characteristics, diagnoses, surgical procedures, comorbidity, bowel movements, defecation, nasogastric tube reinsertion, time of tolerance of solid diet, complications, and length of hospitalization were assessed. RESULTS The two groups were similar in terms of gender, age, diagnosis, surgical procedures, and comorbidity. In the early feeding group, 85.9% of patients tolerated the early feeding schedule. Bowel movements (1.7±0.89 vs. 3.27±1.3), defecation (3.4±0.77 vs. 4.38±1.18) and time of tolerance of solid diet (2.48±0.85 vs. 4.77±1.81) were significantly earlier in the early feeding group. There was no change between the groups in terms of nasogastric tube reinsertion, overall complication or anastomotic leakage. Hospitalization (5.55±2.35 vs. 9.0±6.5) was shorter in the early feeding group. CONCLUSIONS The present study indicated that early oral feeding after elective colorectal surgery was not only well tolerated by patients but also affected the postoperative outcomes positively. Early postoperative feeding is safe and leads to the early recovery of gastrointestinal functions.
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Affiliation(s)
- Ahmet Dag
- Departments of General Surgery, Mersin, Turkey.
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Affiliation(s)
- Alper Sozutek
- Division of Gastroenterologic Surgery, Dept. of General Surgery, Medical Faculty, Mersin University, Mersin, Turkey
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Ocal K, Dag A, Turkmenoglu O, Gunay EC, Yucel E, Duce MN. Radioguided occult lesion localization versus wire-guided localization for non-palpable breast lesions: randomized controlled trial. Clinics (Sao Paulo) 2011; 66:1003-7. [PMID: 21808866 PMCID: PMC3129952 DOI: 10.1590/s1807-59322011000600014] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 02/01/2011] [Accepted: 03/04/2011] [Indexed: 11/22/2022] Open
Abstract
AIM This prospective randomized clinical study was conducted to compare radioguided occult lesion localization (ROLL) with wire-guided localization to evaluate optimum localization techniques for non-palpable breast lesions. METHODS A total of 108 patients who were undergoing an excisional biopsy for non-palpable breast lesions requiring pathologic diagnosis were randomly assigned to the ROLL group (n = 56) and wire-guided localization group (n = 52). In the study, patients' characteristics, radiological abnormalities, radiological technique of localization, localization time, operation time, weight of the excised specimen, clearance margins, pathological diagnosis and perioperative complications were assessed. RESULTS There were no differences between the two groups in terms of age, radiological abnormalities and localization technique (p = non-significant for all). ROLL techniques resulted in 100% retrieval of the lesions; for the wire-guided localization technique, 98%. Both localization time and operation time were significantly reduced with the ROLL technique (p = significant for all). The weight of the specimen was significantly lower in the ROLL group than in the wire-guided localization group (p = significant). The overall complication rate and pathological diagnosis were similar for both groups (p = non-significant for all). Clear margins were achieved in 91% of ROLL patients and in 53% of wire-guided localization patients, and the difference was significant. CONCLUSIONS The present study indicated that the ROLL technique is as effective as wire-guided localization for the excision of non-palpable breast lesions. In addition, ROLL improved the outcomes by reducing localization and operation time, preventing healthy tissue excision and achieving clearer margins.
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Affiliation(s)
- Koray Ocal
- Department of General Surgery, Medical Faculty, Mersin University, Mersin, Turkey
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Dag A, Sozutek A, Saribay R, Basterzi Y, Serinsoz E, Gursoy D. A rare soft tissue tumour: eccrine spiradenoma. Turk J Surg 2011. [DOI: 10.5097/1300-0705.ucd.1286-11.00] [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: 11/08/2022]
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Dag A, Koc O, Colak T, Sozutek A. Congenital bilateral anterior diaphragmatic hernia: a case report. Turk J Surg 2010. [DOI: 10.5097/1300-0705.ucd.296-10.03] [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: 11/08/2022]
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Colak T, Turkmenoglu O, Dag A, Akca T, Aydin S. A Randomized Clinical Study Evaluating the Need for Drainage After Limberg Flap for Pilonidal Sinus. J Surg Res 2010; 158:127-31. [DOI: 10.1016/j.jss.2008.11.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2008] [Revised: 10/31/2008] [Accepted: 11/04/2008] [Indexed: 10/21/2022]
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Abstract
This clinical study was conducted to present clinical, radiologic, and histopathologic features of Granulomatous Mastitis (GM) and evaluate the result of surgical and steroid treatment. Sixteen cases diagnosed histologically as GM were reviewed. Patient characteristics, clinical presentation, radiologic imaging, microbiologic, histopathologic assessment, treatment modalities, recurrence, morbidity, and follow-up data were analyzed. Majority of the patients were child bearing age and all of the patients had a history of breast feeding. Radiologic findings were nonspecific. Histopathology showed the characteristic distribution of granulomatous inflammation in all cases. In 12 cases, surgical excision of the lesion with negative margins was performed. Four cases required quadranectomy because of wideness of the disease. Three patients who had local reoccurrence and three resistant patients were treated by oral prednisone after surgical attempt. Complete remission was obtained and no further recurrence was observed in this patients. GM predominantly occurs in premenopausal women and the clinical symptoms might be misjudged as breast cancer. Histopathologic examination remains the gold standard for the diagnosis. Wide excision of the lesions is the recommended therapy and we suggest steroid therapy in resistant or recurrent disease following the idea that the disease has an autoimmune component.
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Affiliation(s)
- Koray Ocal
- Department of General Surgery Medical Faculty of Mersin University, Mersin, Turkey
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Dag A, Tugendhaft Y, Yogev U, Shatzkin N, Priel N. COMMERCIAL CULTIVATION OF OLIVE (OLEA EUROPAEA L.) WITH SALINE WATER UNDER EXTREME DESERT CONDITIONS. ACTA ACUST UNITED AC 2008. [DOI: 10.17660/actahortic.2008.791.40] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ben-Gal A, Dag A, Yermiyahu U, Tsipori I, Presnov E, Faingold I, Kerem Z. EVALUATION OF IRRIGATION IN A CONVERTED, RAIN FED OLIVE ORCHARD: THE TRANSITION YEAR. ACTA ACUST UNITED AC 2008. [DOI: 10.17660/actahortic.2008.792.9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Colak T, Turkmenoglu O, Dag A, Polat A, Comelekoglu U, Bagdatoglu O, Polat G, Kanik A, Akca T, Aydin S. The effect of remote ischemic preconditioning on healing of colonic anastomoses. J Surg Res 2007; 143:200-5. [PMID: 17825844 DOI: 10.1016/j.jss.2006.10.030] [Citation(s) in RCA: 13] [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] [Subscribe] [Scholar Register] [Received: 08/05/2005] [Indexed: 01/30/2023]
Abstract
BACKGROUND We aimed to investigate the potential protective effect of remote ischemic preconditioning (IPC) on delayed colonic anastomotic healing induced by remote ischemia and reperfusion (I/R) injury. MATERIALS AND METHODS Forty male Wistar rats were randomly assigned into four groups, each consisting of 10 rats: the control group (C), the remote I/R group [I/R, 40 min of superior mesenteric artery (SMA) occlusion], the preconditioned I/R group (IPC, two cycles of 5 min temporary occlusion of SMA before an ischemic insult of 40 min), and the preconditioned group (PC, two cycles of 5 min temporary occlusion of SMA). Colonic anastomosis was performed immediately after the ischemic insult. Anastomotic healing was assessed on postoperative day 7 by determining anastomotic bursting pressure (ABP), tissue hydroxyproline content, histopathological examination, malondialdehyde (MDA), and nitric oxide levels. RESULTS Remote I/R injury resulted with significant impairment in anastomotic healing in terms of mean ABP (P = 0.004), hydroxyproline content (P = 0.002), histopathological healing score (P = 0.001), nitric oxide level (P = 0.010), and MDA levels (P = 0.0001) when compared with the control group, but remote IPC did not improve all above mentioned parameters (P = NS for all), except MDA level (P = 0.011) when compared with I/R group. PC alone impaired the ABP (P = 0.0001), but it did not significantly change the other parameters measured (P = NS). CONCLUSIONS The results of this study showed that remote IPC did not prevent I/R-induced delaying in colonic anastomotic healing.
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Affiliation(s)
- Tahsin Colak
- Department of General Surgery, Mersin University, Faculty of Medicine, Mersin, Turkey.
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Colak T, Dag A, Turkmenoglu O, Polat A, Comelekoglu U, Bagdatoglu O, Polat G, Akca T, Sucullu I, Aydin S. The effect of octreotide on healing of injured colonic anastomosis with immediate postoperative intraperitoneal administration of 5-Fluorouracil. Dis Colon Rectum 2007; 50:660-9. [PMID: 17216142 DOI: 10.1007/s10350-006-0810-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 02/08/2023]
Abstract
PURPOSE This study was designed to investigate the effect of octreotide on side effects of immediate usage of 5-fluorouracil after colonic anastomosis. METHODS Forty male Wistar rats were randomly assigned into four groups and underwent standardized left colonic anastomosis. The rats served as control or received intraperitoneal 5-fluorouracil (20 mg/kg daily), subcutaneous octreotide (20 mug/kg daily), or both. Diarrhea and wound complications were noted during the experiment. The colonic anastomoses were assessed for healing on postoperative Day 7 by determining the anastomotic bursting pressure, performing histologic examination, and measuring the tissue hydroxyproline content, serum malondialdehyde, and nitric oxide levels. Intraperitoneal adhesions and anastomotic leakage were also noted. RESULTS No statistical significant difference was found between the control and octreotide groups for each of the parameters measured. Immediate 5-fluorouracil use resulted with higher adhesion score (P = 0.002), significant depression in anastomotic bursting pressure (P = 0.0001), histopathologic score (P = 0.0001), hydroxyproline content (P = 0.0001), and increasing nitric oxide (P = 0.0001) and malondialdehyde levels (P = 0.0001) compared with the control group. Diarrhea was seen in 80 percent of the 5-fluorouracil group but in neither the control nor octreotide groups (P = 0.0001 for each comparison). However, all these parameters were ameliorated by use of concomitant octreotide and 5-fluorouracil (P = 0.019, P = 0.023, P = 0.0001, P = 0.006, P = 0.0001, and P = 0.013, respectively). In addition, diarrhea was found to be prevented (P = 0.0001). CONCLUSIONS The results of this study showed that concomitant octreotide use might prevent the side effects of 5-fluorouracil, such as diarrhea, postoperative adhesion, and delaying the anastomotic healing parameters. In addition, it might reduce tissue damage and inflammation.
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Affiliation(s)
- Tahsin Colak
- Faculty of Medicine, Department of General Surgery, Mersin University, Tip Fakultesi Hastanesi, Zetinlibahce C., Mersin, 33097, Turkey.
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Kadiroglu AK, Kadiroglu ET, Sit D, Dag A, Yilmaz ME. Periodontitis Is an Important and Occult Source of Inflammation in Hemodialysis Patients. Blood Purif 2006; 24:400-4. [PMID: 16755163 DOI: 10.1159/000093683] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2006] [Accepted: 04/12/2006] [Indexed: 11/19/2022]
Abstract
AIM To evaluate the association between C-reactive protein (CRP) levels and the periodontal status of hemodialysis (HD) patients. METHODS 41 HD patients on rHuEPO therapy were enrolled in the study. Hematologic and biochemical parameters and CRP levels were recorded. The plaque index, gingival index, probing pocket depth and periodontal disease index were used to identify periodontal disease. The patients were divided into 2 groups: group 1 (n = 21), high CRP, and group 2 (n = 20), normal CRP. RESULTS After periodontal therapy, while the mean CRP level and erythrocyte sedimentation rate declined from 30.46 to 10.36 (p = 0.001) and from 93.4 to 35.8 mg/l (p = 0.001), respectively, the hemoglobin level increased from 9.4 to 10.6 g/dl (p = 0.009) and hematocrit level from 28.2 to 32.0% (p = 0.008) in group 1. CONCLUSION Periodontitis is an important and occult source of chronic inflammation and increases the CRP levels in HD patients. Periodontitis can cause hyporesponsiveness to rHuEPO treatment and decrease the hemoglobin levels.
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Affiliation(s)
- Ali Kemal Kadiroglu
- Department of Nephrology, Medical Faculty, University of Dicle, Diyarbakir, Turkey.
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Afik O, Dag A, Kerem Z, Shafir S. Analyses of avocado (Persea americana) nectar properties and their perception by honey bees (Apis mellifera). J Chem Ecol 2006; 32:1949-63. [PMID: 16902825 DOI: 10.1007/s10886-006-9120-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2006] [Revised: 03/31/2006] [Accepted: 05/01/2006] [Indexed: 10/24/2022]
Abstract
Honey bees are important avocado pollinators. However, due to the low attractiveness of flowers, pollination is often inadequate. Previous work has revealed that avocado honey is relatively unattractive to honey bees when compared with honey from competing flowers. We characterized avocado honey and nectar with respect to their odor, color, and composition of sugars, phenolic compounds, and minerals. Furthermore, we tested how honey bees perceive these parameters, using the proboscis extension response bioassay and preference experiments with free-flying bees. Naïve bees were indifferent to odors of avocado and citrus flowers and honey. Experienced bees, which were collected in the field during the blooming season, responded preferentially to odor of citrus flowers. The unique sugar composition of avocado nectar, which contains almost exclusively sucrose and a low concentration of the rare carbohydrate perseitol, and the dark brown color of avocado honey, had no negative effects on its attractiveness to the bees. Phenolic compounds extracted from avocado honey were attractive to bees and adding them to a solution of sucrose increased its attractiveness. Compared with citrus nectar and nonavocado honey, avocado nectar and honey were rich in a wide range of minerals, including potassium, phosphorus, magnesium, sulfur, iron, and copper. Potassium and phosphorus, the two major minerals, both had a repellent effect on the bees. Possible explanations for the presence of repellent components in avocado nectar are discussed.
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Affiliation(s)
- O Afik
- B. Triwaks Bee Research Center, Department of Entomology, Faculty of Agricultural, Food and Environmental Quality Sciences, The Hebrew University of Jerusalem, Rehovot, 76100, Israel
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Kaya F, Çağlayan F, Dag A, Kaya H, Kaya C. The Investigation of Gingival Crevicular Fluid Prosthoglandin E2 Level of the Type II Diabetes Mellitus Patients with Periodontitis. BIOTECHNOL BIOTEC EQ 2006. [DOI: 10.1080/13102818.2006.10817363] [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: 10/25/2022] Open
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Caglikulekci M, Dirlik M, Aydin O, Ozer C, Colak T, Dag A, Canbaz H, Aydin S. Carcinoid tmour of the common bile duct: report of a case and a review of the literature. Acta Chir Belg 2006; 106:112-5. [PMID: 16612931 DOI: 10.1080/00015458.2006.11679850] [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: 10/21/2022]
Abstract
Carcinoid tumours of the common bile duct are extremely rare lesions. In this article we report a case with an extrahepatic bile duct carcinoid tumour. A 40-year-old woman suffered from biliary colic and jaundice. Pre-operative computed tomography demonstrated a tumour in the biliary tract. At laparotomy there was a tumour invading the common bile duct. Common bile duct resection was performed. Carcinoid tumour of the common bile duct was diagnosed histopathologically. For extrahepatic bile duct carcinoid tumours surgical resection is the only treatment modality that offers a chance to provide a cure and prolonged disease-free survival. The favourable histopathological and biological features of these tumours encouraged the surgeons to use more aggressive approaches for advanced disease.
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Affiliation(s)
- M Caglikulekci
- Department of General Surgery, Mersin University Medical School, Metzitli-Mersin, Turkey.
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Kaya F, Çağlayan F, Dag A, Kaya C, Doğru A. The Investigation of the Gingival Crevicular Fluid Prostaglandin E 2Level of the Pregnant Individuals with Type II Diabetes Mellitus and Peridontitis. BIOTECHNOL BIOTEC EQ 2006. [DOI: 10.1080/13102818.2006.10817396] [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: 10/25/2022] Open
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Colak T, Akca T, Dirlik M, Kanik A, Dag A, Aydin S. Micronized Flavonoids in Pain Control After Hemorrhoidectomy: A Prospective Randomized Controlled Study. Surg Today 2003; 33:828-32. [PMID: 14605954 DOI: 10.1007/s00595-003-2604-5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2002] [Accepted: 03/11/2003] [Indexed: 11/27/2022]
Abstract
PURPOSE We conducted a prospective randomized controlled study to evaluate the effect of micronized flavonoid fractions (MFF) on pain after hemorrhoidectomy. METHODS The subjects were 112 consecutive patients randomly assigned either to receive MFF (group 1) for 1 week or not to receive MFF, as a control (group 2), after hemorrhoidectomy, The severity of pain and the number of intramuscular analgesic injections required were recorded for the first 3 days, then 1 week after hemorrhoidectomy. The number of days that intramuscular analgesic injections were required, hospital stay, and patient satisfaction were also assessed. RESULTS On postoperative day (POD) 1, there were no significant differences between the parameters of the two groups, but on PODs 2 and 3, both the pain score ( P = 0.033 and P = 0.011, respectively) and the number of patients who required intramuscular analgesic injections were significantly less in group 1 ( P = 0.022 and P = 0.007, respectively). Moreover, the hospital stay was shorter and patient satisfaction was superior in group 1 ( P = 0.001 and P = 0.001, respectively). After 1 week, the pain score and number of intramuscular analgesic injections given were significantly less in group 1 ( P = 0.001 and P = 0.021). CONCLUSION Using MFF after hemorrhoidectomy reduced the severity of pain and intramuscular analgesic requirement.
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Affiliation(s)
- Tahsin Colak
- Department of Surgery, Mersin Medical Faculty of Mersin University, Tip Fakultesi Hastanesi Zeytinlibahce C, 33079 Mersin, Turkey
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Dvash L, Afik O, Shafir S, Schaffer A, Yeselson Y, Dag A, Landau S. Determination by near-infrared spectroscopy of perseitol used as a marker for the botanical origin of avocado (Persea americana Mill.) honey. J Agric Food Chem 2002; 50:5283-5287. [PMID: 12207462 DOI: 10.1021/jf020329z] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
This paper reports the application of near-infrared (NIR) reflectance spectroscopy to determine the concentration in honey of perseitol, a sugar that is specific to avocado honey. Reference values for perseitol were obtained by high-performance liquid chromatography analysis in 109 honey samples. Although the average concentration of perseitol in honey samples was only 0.48%, accurate prediction equations were successfully developed. The regression model of modified partial least squares was superior to that of principal component regressions. Calibrations based on the first or second derivative of Log(1/R) were equally good (R(2) > 0.95). Using half of the samples for calibration and the second half for validation, the correlation between actual and predicted values of the second half was satisfactory (R(2) = 0.87), the slope did not differ from 1, bias was low (0.005%), and the standard error of prediction was relatively low (0.13%). It was concluded that NIRS analysis may be used to detect to what extent honeybees have harvested avocado nectar but not to authenticate avocado honey as unifloral.
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Affiliation(s)
- L Dvash
- Institute of Field and Garden Crops, The Volcani Center, Agricultural Research Organization, P.O. Box 6, Bet Dagan 50250, Israel
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Abstract
In some wheat growing countries, considerable quantities of commercial wheat are rendered unusable in standard milling because of pre-harvest damage of the grain by protease-injecting insects. The possibility of mitigating the detrimental effects of bug damage by eliminating the mill streams of lower quality from straight run flour was investigated. The changes in the amount of damaged kernels by cleaning and washing prior to milling were also examined. Dry cleaning decreased the level of insect damage from 26.4% to 23.0%. A further improvement to 12.8% was obtained by removing the light-density bug-damaged kernels by washing. There were substantial differences among the mill streams of the commercial mill as evaluated by the standard and modified sedimentation tests and standard alveograph test. The best streams were those from the first, second, third and fourth reductions.
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Affiliation(s)
- H Köksel
- Hacettepe University, Faculty of Engineering, Department of Food Engineering, Beytepe Campus, TR-06532 Ankara, Turkey.
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Miozes-Koch R, Slabezki Y, Efrat H, Kalev H, Kamer Y, Dag A. First detection in Israel of fluvalinate resistance in the varroa mite using bioassay and biochemical methods. Exp Appl Acarol 2000; 24:35-43. [PMID: 10823355 DOI: 10.1023/a:1006379114942] [Citation(s) in RCA: 26] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The aim of this study was to explore the extent of varroa mite resistance to fluvalinate in Israel and to determine the underlying biochemical mechanism. Assays at different apiaries indicated varroa mite resistance at three of the five sites tested. Dose response assays conducted with tau-fluvalinate on mites obtained from different sites indicated uneven resistance. A monooxygenase assay revealed an increased rate (approximately 20-fold) of activity in mites that were not controlled by the pesticide, as compared to activity in mites from untreated colonies. A minor, 1.5-2.5 fold, increase of esterase activity was also noted in the resistant mites. This first demonstration of a fluvalinate-resistance mechanism in varroa mites points to the need for more vigorous resistance management practices to control the pest.
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Affiliation(s)
- R Miozes-Koch
- Department of Entomology, Faculty of Agricultural, Food and Environmental Sciences, Hebrew University of Jerusalem, Rehovot, Israel
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