Person: AYŞAN, MUSTAFA ERHAN
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Publication Open Access Parathyroid allotransplantation in rabbits without cultivation.(2014-01-15) CAN, I; YUCESAN, E; Aysan, E; SAYITOGLU, M; OZBEK, U; ERCIVAN, M; ATASOY, H; BUYUKPINARBASILI, NUR; MUSLUMANOGLU, M; AYŞAN, MUSTAFA ERHAN; YÜCESAN, EMRAH; BÜYÜKPINARBAŞILI, NURPermanent hypoparathyroidism is a serious clinical situation. Allotransplantation of the parathyroid cells is relatively new approach to treatment. Non-cultivated allotransplantation in rabbits is not tried before. In this research parathyroidectomy was performed in six female New Zealand white rabbits. After division of surgically removed tissues into two, cryopreservation after cell isolation was done. Non-cultivated cross allotransplantation was performed under immunosuppression. Serum calcium and phosphorus levels were observed 15 days and histopathological analyses of the transplanted parathyroid tissues were studied. Significant changes in serum calcium and phosphorus levels during the experiment were observed (p=0.001 for both). Calcium levels which were significantly dropped to 6.66±0.7 mg/dL after parathyroidectomy and progressively increased up to 15.98±1.25 mg/dL at the end of the experiment (p=0.004). Phosphorus levels which were increased to 9.38±0.63 mg/dL after parathyroidectomy and stabilized to 4.46±1.06 mg/dL at the end of the experiment (p=0.007). All allotransplanted parathyroid tissues showed normal tissue architecture without evidence of cellular rejection. In conclusion allotransplantation of the parathyroid tissues without cultivation may be considered as an alternative and safe approach for the treatment of permanent hypoparathyroidism.Publication Open Access Efficacy of glycerol and flax seed oil as anti-adhesive barriers after thyroidectomy.(2014-06-28) IDIZ, O; Aysan, E; FIRAT, D; ERSOY, YELİZ EMİNE; CENGIZ, MB; AKBULUT, H; ISıK, A; MUSLUMANOGLU, M; AYŞAN, MUSTAFA ERHAN; ERSOY, YELIZ EMINEWe evaluated the effects of local flax seed oil and glycerol application for reducing adhesion formation after thyroidectomy. Material/Method: We randomly assigned 18 female Wistar albino rats (median weight: 275 g, median age: 4.5 mth) to 3 groups: 0.1 ml 0.9% NaCl, glycerol, and flax seed oil were sprayed in a perithyroidal area after thyroidectomy operation on all animals as anti-adhesive barriers. Rats were sacrificed on the postoperative 14th day and adhesions were evaluated macroscopically and microscopically. Results: The median macroscopic adhesion score was 3.0±0.0 in the 0.9% NaCl group, 1.33±0.52 in the glycerol group, and 1.67±0.53 in the flax seed oil group. The median histopathological fibrosis scores were 2.33±0.82, 0.67±0.52, and 0.83±0.75, respectively. Both glycerol and flaxseed oil group macroscopic and microscopic scores were significantly lower than the 0.9% NaCl group (p<0.05). There was no significant difference among the groups (p>0.05). Conclusions: Glycerol and flax seed oil both decrease the incidence of post-thyroidectomy adhesion in rats, but glycerol is more effective.Publication Open Access Safe thyroidectomy with intraoperative methylene blue spraying.(2012-11-13) SARI, S; Aysan, E; MUSLUMANOGLU, M; ERSOY, YELİZ EMİNE; BEKTASOGLU, HÜSEYİN KAZIM; YARDıMCı, ERKAN; AYŞAN, MUSTAFA ERHAN; ERSOY, YELIZ EMINE; BEKTAŞOĞLU, HÜSEYİN KAZIM; YARDIMCI, ERKANBackground: We aimed to minimalize operative complications by spraying of methylene blue stain on thyroid glands and the perithyroidal area. Material and methods: The intra-operative methylene blue spraying technique was used prospectively on a total of 56 patients who had undergone primary (not recurrent) thyroid surgery for a variety of thyroid diseases. Bilateral total thyroidectomy was performed in all cases. After superior but before inferior pole ligation, 0.5ml of methylene blue was sprayed over the thyroid lobe and perilober area. Tissues, especially parathyroides, the recurrent laryngeal nerve, and the inferior thyroid artery, were identified and evaluated. Results: Recurrent laryngeal nerve and arteries were not stained and thus they remained white in all cases while all other tissues were stained blue. Within three minutes parathyroid glands washed out the blue stain and the original yellow color was regained. Thyroid tissue wash-out time was not less than 15 minutes; perithyroideal muscles, tendinous and lipoid structures took no less than 25 minutes. Conclusion: The safety of intravascular methylene blue guidance on thyroid surgery is known. This research demonstrates the effectiveness of the spraying technique, a new technique which ensures not only identification of parathyroid glands within three minutes, but also identification of recurrent laryngeal nerves and inferior thyroid arteries.Publication Metadata only Effects of Boron-Based Gel on Radiation-Induced Dermatitis in Breast Cancer: A Double-Blind, Placebo-Controlled Trial.(2017-06-01) Aysan, E; IDIZ, UO; ELMAS, L; SAGLAM, EBRU; AKGUN, ZEYNEP; YUCEL, SB; AYŞAN, MUSTAFA ERHAN; SAĞLAM, EBRU; AKGÜN, ZEYNEPPublication Open Access New and Simple Approach for Preventing Postoperative Peritoneal Adhesions: Do not Touch the Peritoneum without Viscous Liquid-A Multivariate Analysis.(2012-01-01) Aysan, E; BEKTAS, H; ERSOZ, F; SARI, S; KAYGUSUZ, A; HUQ, GE; AYŞAN, MUSTAFA ERHANBackground. Postoperative peritoneal adhesions (PPAs) are an unsolved and serious problem in abdominal surgery. Method. Viscous liquids of soybean oil, octyl methoxycinnamate, flax oil, aloe vera gel, and glycerol were used in five experiments, using the same methodology for each. Liquids were applied in the peritoneal cavity before and after mechanical peritoneal trauma. Results were evaluated by multivariate analysis. Results. Compared with the control group, macroscopic and microscopic adhesion values before (P < .001) and after (P < .05) application of viscous liquids significantly reduced PPAs. Values were significantly lower when liquids were applied before rather than after peritoneal trauma (P < .0001). Discussion. Viscous liquids injected into the peritoneal cavity before or after mechanical peritoneal trauma decrease PPA. Injection before trauma was more effective than after trauma. In surgical practice, PPA formation may be prevented or decreased by covering the peritoneal cavity with an appropriate viscous liquid before abdominal surgery.Publication Open Access Parathyroid Allotransplant With a New Technique: A Prospective Clinical Trial.(2016-08-01) Aysan, E; ALTUG, B; ERCAN, C; Kesgin, Toka; IDIZ, UO; MUSLUMANOGLU, M; AYŞAN, MUSTAFA ERHAN; ERCAN, ÇİLEMObjectives: Parathyroid allotransplant is a valuable alternative in treating permanent hypoparathyroidism. However, it is a difficult process that requires several trained staff and advanced laboratory equipment, which makes the costs high. Here, we identify a new parathyroid allotransplant technique. Materials and Methods: After obtaining informed consent from patients, parathyroid cell suspensions obtained from 4 donors who had undergone a subtotal parathyroidectomy owing to chronic renal failure were transplanted in 10 patients with permanent hypoparathyroidism after short-term cell cultivation. Prednisolone were used as immunosuppressant for the first 10 days and discontinued thereafter. Results: Allograft function was observed in 7 patients (70%) at a mean follow-up of 12 months. Daily oral calcium and vitamin D supplementations discontinued totally in 7 patients. No major or minor complication was observed. Conclusions: Our technique is simple, fast, and has a low cost, with a 70% success rate at a mean follow-up of 12 months. It requires few staff, minimal equipment, and short-term immunosuppressant use for main tenance. The technical developments of parathyroid allotransplant, as mentioned in this study, may be important in treating permanent hypoparathyroidismPublication Open Access Parathyroid Allotransplant for Persistent Hypocalcaemia: A New Technique Involving Short-Term Culture.(2016-04-01) Aysan, E; KILIC, U; GOK, O; ALTUG, B; ERCAN, C; Kesgin, Toka; IDIZ, UO; MUSLUMANOGLU, M; AYŞAN, MUSTAFA ERHAN; ERCAN, ÇİLEMObjectives: To develop a new parathyroid allotransplant method for the treatment of permanent hypoparathyroidism. Materials and methods: Parathyroid cells 50 × 10(6) derived from a parathyroid hyperplasia patient were transferred to a 61-year-old patient who had thyroidectomy 17 years earlier, allowing to papillary thyroid cancer; he was admitted to our outpatient clinic with symptomatic chronic hypocalcemia. Cell isolation, cryopreservation, and culturing were conducted according to a new protocol. Results: During a follow-up of 5 months, the patient had no complications that could indicate rejection, and clinical symptoms completely resolved without requiring any drug supplementation. Conclusions: Here, we report a new method, enabling fast and cost-effective parathyroid allotransplant with maintained tissue viability sufficient to treat persistent hypocalcemia.Publication Metadata only A novel non-surgical, minimally invasive technique for parathyroid autotransplantation: a case report.(2015-03-01) Aysan, E; KILIC, U; GOK, O; ALTUG, B; ERCAN, C; IDIZ, UO; KESGIN, C; MUSLUMANOGLU, M; AYŞAN, MUSTAFA ERHAN; ERCAN, ÇİLEMPublication Open Access The diagnostic ability of core needle biopsy in nodular thyroid disease.(2017-03-01) Aysan, E; KIRAN, TUĞÇE; IDIZ, UO; AKBULUT, H; GULER, B; KUNDUZ, ENVER; ARICI, S; KADAKAL, G; Ozgor, M; Coci, K; AYŞAN, MUSTAFA ERHAN; KIRAN, TUĞÇE; GÜLER, BERIL; KUNDUZ, ENVERINTRODUCTION Non-diagnostic results of fine needle aspiration biopsy (FNAB) remain an important limitation of this technqiue. The aim of our study was to evaluate the results of core needle biopsy (CNB) of thyroid nodules and its effectiveness in non-diagnostic FNAB cases. METHODS CNBs were performed in 1,000 patients (154 male, 846 female; mean age: 50.2 years, range: 18–86 years) with a spring loaded 20G needle. Of these, 143 had initially had FNABs that were insufficient for evaluation. The CNB reports were reviewed. Patients with suspicious or malignant CNB results underwent total thyroidectomy. RESULTS When considering all 1,000 CNBs, the non-diagnostic rate was 1.5% (15/1,000). However, when the first 100 cases were eliminated as a learning curve, this reduced to 0.9% (8/900). Of the 143 cases with initial FNABs that were non-diagnostic, 0.7% (1/143) were also non-diagnostic on CNB. Twelve patients underwent surgery because of malignant CNB reports and all of these cases were confirmed as malignant by the postoperative pathology specimen results (100% accuracy). There were no major complications although three self-limiting minor complications were observed. CONCLUSIONS CNB is a safe and accurate method. It is more diagnostic than FNAB for nodular thyroid disease.Publication Open Access Intersphincteric resection and coloanal anastomosis in treatment of distal rectal cancer.(2012-01-01) CIPE, G; MUSLUMANOGLU, M; YARDıMCı, ERKAN; MEMMI, NAİM; Aysan, E; YARDIMCI, ERKAN; MEMMİ, NAİM; AYŞAN, MUSTAFA ERHANIn the treatment of distal rectal cancer, abdominoperineal resection is traditionally performed. However, the recognition of shorter safe distal resection line, intersphincteric resection technique has given a chance of sphincter-saving surgery for patients with distal rectal cancer during last two decades and still is being performed as an alternative choice of abdominoperineal resection. The first aim of this study is to assess the morbidity, mortality, oncological, and functional outcomes of intersphincteric resection. The second aim is to compare outcomes of patients who underwent intersphincteric resection with the outcomes of patients who underwent abdominoperineal resection.
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