Chemical Constituents of Some Hypericum Species Growing in Turkey

Cuneyt Clrak,Jolita Radusiene,Valdimaras Janulis,Liudas Lvanauskas,Burhan Arslan 한국식물학회 2007 Journal of Plant Biology Vol.50 No.6

Surgery for intractable pain in a patient with chronic pancreatitis complicated with biliary obstruction, portal vein stenosis and mesenteric venous collaterals

Cuneyt Kayaalp,Murat Sait Dogan,Veysel Ersan 한국간담췌외과학회 2017 Annals of hepato-biliary-pancreatic surgery Vol.21 No.2

Pancreatic head resection for chronic pancreatitis is a challenging procedure, in the presence of venous collaterals, cavernous transformation, extensive fibrosis or porto-mesenteric stenosis or thrombosis. We present a surgically treated patient for the intractable pain of chronic pancreatitis. Complications with biliary obstruction and portal vein stenosis/thrombosis resulted in cavernous transformation. A pancreaticoduodenectomy combined with portal vein resection was intended in a 51 year-old male, but the procedure was terminated due to the high risk associated with intraoperative bleeding. The surgical procedure was switched to a Frey procedure, wherein partial pancreatic head resection, drainage of the pancreatic canal and sufficient pain palliation, without an increased risk of intraoperative hemorrhage, was ensured. The procedure was successfully combined with bilio-enteric anastomosis.

DEVELOPMENT OF EFFICIENT METHODS TO REDUCE THE EMITTED NOISE LEVELS OF APPLIANCE DRAIN PUMPS

Cuneyt Ozturk 한국소음진동공학회 1994 한국소음진동공학회 국제학술대회논문집 Vol.1994 No.4

The Effect of Evaporator Effectiveness on Unit Exergy Cost of Electricity Generated by an Organic Rankine Cycle

Cuneyt Uysal,Hasan Ozcan,Hakan Caliskan,Ho-Young Kwak,Huseyin Kurt,Hiki Hong 대한설비공학회 2017 대한설비공학회 학술발표대회논문집 Vol.2017 No.6

An Organic Rankine Cycle is theoretically modelled and thermoeconomically investigated for different evaporator effectiveness. In thermoeconomic analysis, the Specific Exergy Costing (SPECO) method is used and the effect of evaporator effectiveness on unit exergy cost of electricity generated by the system is investigated. Exergy value of electricity generated by the system increases with increase in evaporator effectiveness. On the other hand, increase in evaporator effectiveness causes to an increase in hourly capital cost of system components and overall system. The results showed that the unit exergy cost of electricity generated by the system is 36.72 $/kJ for evaporator effectiveness of ε =0.5, while it is 41.64 $/kJ for ε =0.95.

Direct and Indirect Regeneration of Plants from Internodal and Leaf Explants of Hypericum bupleuroides Gris

( Cuneyt Clrak ),( Ali Kemal Ayan ),( Kudret Kevseroglu ) 한국식물학회 2007 Journal of Plant Biology Vol.50 No.1

Conventional Galactography and MR Contrast Galactography for Diagnosing Nipple Discharge: Preliminary Results

Cuneyt Yucesoy,Emine Ozturk,Yusuf Ozer,Tahsin Edguer,Baki Hekimoglu 대한영상의학회 2008 Korean Journal of Radiology Vol.9 No.5

Objective: We wanted to compare the clinical usefulness of conventional galactography and MR contrast galactography for diagnosing patients with nipple discharge. Materials and Methods: Both conventional galactography and MR contrast galactography were performed prospectively in 16 patients. Gadopentate dimeglumine (0.1 ml) was mixed with non-ionic contrast medium (0.9 ml) to obtain a resultant volume of 1 ml and this was used for both examinations. Following conventional galactography, MR contrast galactography was performed after direct injection of contrast media into the duct. Results: Conventional galactography and MR contrast galactography were concordant in 13 (81%) of 16 patients; the results were normal in five, ductal dilatation was noted in four and intraductal filling defects were noted in four. The remaining three (19%) patients demonstrated discordant findings on the two examinations. While conventional galactography revealed filling defects, the MR contrast galactography results were normal in two patients. The third patient had kinks-stricture on conventional galactography and MR contrast galactography showed ductal dilatation. This suggested there were false positive results for the three patients’ conventional galactography, and all the three patients with discordant results underwent surgery and the histopathologic evaluation showed fibrocystic changes. Conclusion: MR contrast galactography may be used as an alternative imaging modality for making the diagnosis of pathologic nipple discharge. However, statistically supported studies with large pools of subjects for comparing the galactography and MR contrast galactography results are needed to confirm our findings. Objective: We wanted to compare the clinical usefulness of conventional galactography and MR contrast galactography for diagnosing patients with nipple discharge. Materials and Methods: Both conventional galactography and MR contrast galactography were performed prospectively in 16 patients. Gadopentate dimeglumine (0.1 ml) was mixed with non-ionic contrast medium (0.9 ml) to obtain a resultant volume of 1 ml and this was used for both examinations. Following conventional galactography, MR contrast galactography was performed after direct injection of contrast media into the duct. Results: Conventional galactography and MR contrast galactography were concordant in 13 (81%) of 16 patients; the results were normal in five, ductal dilatation was noted in four and intraductal filling defects were noted in four. The remaining three (19%) patients demonstrated discordant findings on the two examinations. While conventional galactography revealed filling defects, the MR contrast galactography results were normal in two patients. The third patient had kinks-stricture on conventional galactography and MR contrast galactography showed ductal dilatation. This suggested there were false positive results for the three patients’ conventional galactography, and all the three patients with discordant results underwent surgery and the histopathologic evaluation showed fibrocystic changes. Conclusion: MR contrast galactography may be used as an alternative imaging modality for making the diagnosis of pathologic nipple discharge. However, statistically supported studies with large pools of subjects for comparing the galactography and MR contrast galactography results are needed to confirm our findings.

Mazabraud’s Syndrome Coexisting with a Uterine Tumor Resembling an Ovarian Sex Cord Tumor (UTROSCT): a Case Report

Cuneyt Calisir,Ulukan Inan,Ulas Savas Yavas,Serap Isiksoy,Tamer Kaya 대한영상의학회 2007 Korean Journal of Radiology Vol.8 No.5

The association of intramuscular myxoma and fibrous dysplasia is a rare disease known as Mazabraud's syndrome. We present a case of Mazabraud's syndrome coexisting with a uterine tumor and resembling an ovarian sex cord tumor (UTROSCT). This uterine tumor showed a high mitotic index and cytological atypia. To the best of our knowledge, the coexistence of the two different entities has not been reported in the literature.

The Relationship between the Breast Arterial Calcification Detected by Mammography and the Hypertensive Retinopathy in Hypertensive Women

Cuneyt Calisir,Ulas Savas Yavas,Nazmiye Erol 대한영상의학회 2008 Korean Journal of Radiology Vol.9 No.4

Objective: The purpose of this study was to investigate the relationship between the breast arterial calcification (BAC) detected by mammograms and the hypertensive retinopathy (HR) in hypertensive women who underwent ophthalmologic examination. Materials and Methods: Screening mammography was performed in 99 hypertensive women and these women also underwent an ophthalmologic examination. The presence of arterial calcification and the number of calcified blood vessels in each breast were evaluated. The grade of HR was determined. The presence of BAC and the number of blood vessels involved was compared according to the presence of HR and the grade of HR. Results: Among the 99 patients, HR was detected in 70 patients, and of these 70 patients, 42 patients had grade I HR and 28 had grade II HR. BAC was detected in 54 cases. Forty-six patients with HR (66%) and eight patients without HR (27%) were diagnosed with BAC after they underwent mammographic examination. The prevalence of BAC in the subjects who had HR was statistically higher than that in those subjects who did not have HR (p < 0.01). The grade of HR was not significantly associated with BAC (p > 0.05). The positive predictive value of the BAC detected on mammography for HR was 0.80 in those subjects who were 60 years old. Conclusion: The detection of BAC by mammography is associated with an increased risk of HR, and particularly for patients after the age of 60. The findings of BAC may be related to hypertensive end-organ damage, and performing mammograms might contribute to predicting the presence of ophthalmologic hypertensive complications in these patients. Objective: The purpose of this study was to investigate the relationship between the breast arterial calcification (BAC) detected by mammograms and the hypertensive retinopathy (HR) in hypertensive women who underwent ophthalmologic examination. Materials and Methods: Screening mammography was performed in 99 hypertensive women and these women also underwent an ophthalmologic examination. The presence of arterial calcification and the number of calcified blood vessels in each breast were evaluated. The grade of HR was determined. The presence of BAC and the number of blood vessels involved was compared according to the presence of HR and the grade of HR. Results: Among the 99 patients, HR was detected in 70 patients, and of these 70 patients, 42 patients had grade I HR and 28 had grade II HR. BAC was detected in 54 cases. Forty-six patients with HR (66%) and eight patients without HR (27%) were diagnosed with BAC after they underwent mammographic examination. The prevalence of BAC in the subjects who had HR was statistically higher than that in those subjects who did not have HR (p < 0.01). The grade of HR was not significantly associated with BAC (p > 0.05). The positive predictive value of the BAC detected on mammography for HR was 0.80 in those subjects who were 60 years old. Conclusion: The detection of BAC by mammography is associated with an increased risk of HR, and particularly for patients after the age of 60. The findings of BAC may be related to hypertensive end-organ damage, and performing mammograms might contribute to predicting the presence of ophthalmologic hypertensive complications in these patients.

Relationship of Probable Attention Deficit Hyperactivity Disorder with Severity of Psychopathology and Impulsivity in a Sample of Male Patients with Opioid Use Disorder

Cuneyt Evren,Izgi Alniak,Vahap Karabulut,Turan Cetin,Gokhan Umut,Ruken Agachanli,Bilge Evren 대한신경정신의학회 2018 PSYCHIATRY INVESTIGATION Vol.15 No.2

ObjectiveaaThe aim of the present study was to evaluate relationship of probable attention deficit hyperactivity disorder (ADHD) with severity of psychopathology and the effect of impulsivity on this relationship in a sample of male patients with opioid use disorder (OUD). MethodsaaParticipants included 234 patients (115 inpatients and 119 outpatients) with OUD. Participants were evaluated with the Adult ADHD Self-Report Scale (ASRS-v1.1), the Symptom Checklist-90-R (SCL-90-R) and the Short Form of Barratt Impulsiveness Scale (BIS-11-SF). ResultsaaPsychopathology and impulsivity scores were higher among those with the probable ADHD. ADHD scores were midly to moderately correlated with impulsivity and psychopathology scores. In logistic regression analyses, while severity of general psychopathology and impulsivity predicted probable ADHD in the first Model, in the second Model, among dimensions of psychopathology obsessive compulsive (OC) dimension, whereas among dimensions of impulsivity non-planning and motor impulsivity predicted probable ADHD. ConclusionaaThese findings suggest that probable ADHD is related with the severity of psychopathology, particularly OC dimension, while the severity of impulsivity may have an partial mediator (particularly non-planning and motor impulsivity) effect on this relationship among patients with OUD.

Is single port incisionless-intracorporeal conventional equipment-endoscopic surgery feasible in patients with retrocecal acute appendicitis?

Suleyman Cuneyt Karakus,Huseyin Kilincaslan,Naim Koku,Idris Ertaskin 대한외과학회 2013 Annals of Surgical Treatment and Research(ASRT) Vol.85 No.2

Purpose: Since laparoscopic appendectomy was first described, various modifications, such as single port incisionless-intracorporeal conventional equipmentendoscopic surgery (SPICES), have been described for reducing pain and improving cosmetic results. In the retrocecal and retrocolic positions, attachments to the lateral peritoneum and cecum may lead to difficulties during SPICES, which is performed with only one port. Here, we present the effects of variations in the position of the vermiform appendix in treating acute appendicitis with SPICES. Methods: We retrospectively reviewed 52 children who underwent SPICES for acute appendicitis between March 2010 and November 2011 in our institution. One group (group A) consisted of 30 patients (mean age, 10.5 ± 2.5 years) with retrocecal appendix, while the other group (group B) included 22 patients (mean age, 10.9 ± 2.3 years) with the appendix lying free in the peritoneal cavity. Results: There were no significant differences between groups in terms of patient age, gender, success rate of SPICES, mean operating time, mean follow-up period, overall complication rates or mean postoperative hospitalization period. Conclusion: These results suggest that SPICES is a safe and feasible approach even in patients with retrocecal acute appendicitis.