1
|
Topkan E, Somay E, Yilmaz B, Selek U. Comment on "Management of the neck in T1 and T2 buccal squamous cell carcinoma". Int J Oral Maxillofac Surg 2024; 53:444-445. [PMID: 38143219 DOI: 10.1016/j.ijom.2023.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 11/20/2023] [Indexed: 12/26/2023]
Affiliation(s)
- E Topkan
- Department of Radiation Oncology, Faculty of Medicine, Başkent University, Adana, Turkey
| | - E Somay
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Başkent University, Ankara, Turkey.
| | - B Yilmaz
- Department of Oral and Maxillofacial Radiology, School of Dental Medicine, Bahcesehir University, Istanbul, Turkey
| | - U Selek
- Department of Radiation Oncology, School of Medicine, Koç University, Istanbul, Turkey
| |
Collapse
|
2
|
Yilmaz B, Selek U. Comments on "An umbrella review exploring the effect of radiotherapy for head and neck cancer patients on the frequency of jaws osteoradionecrosis". Cancer Radiother 2024; 28:206-207. [PMID: 38485574 DOI: 10.1016/j.canrad.2023.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 07/18/2023] [Indexed: 04/22/2024]
Affiliation(s)
- B Yilmaz
- Department of Oral and Maxillofacial Radiology, School of Dental Medicine, Bahcesehir University, Istanbul, Turkey.
| | - U Selek
- Department of Radiation Oncology, School of Medicine, Koc University, Istanbul, Turkey.
| |
Collapse
|
3
|
Kulakli S, Kulakli F, Yilmaz B, Sari İF, Oğuz ID. Is seborrheic dermatitis associated with early-stage osteoarthritis? Medicine (Baltimore) 2024; 103:e37217. [PMID: 38335384 PMCID: PMC10860987 DOI: 10.1097/md.0000000000037217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2024] Open
Abstract
Seborrheic dermatitis (SD) and osteoarthritis involve similar factors in their pathogenesis. Both of these diseases are associated with an increased frequency of metabolic syndrome and underlying systemic inflammation. This study evaluated the thickness of the distal femoral cartilage using ultrasonography in patients with SD. The study enrolled 60 patients with SD (19 females and 41 males, mean age: 34.07 ± 12.56 years) and 60 controls matched for age and sex (20 females and 40 males, mean age: 35.08 ± 12.78 years). Ultrasonography was used to measure the distal femoral cartilage thickness (FCT) of the right medial condyle, right lateral condyle, right intercondylar area, left medial condyle, left lateral condyle, and left intercondylar area. FCT values at all points were significantly higher in patients with SD than in the controls (P < .05). Further, all FCT values were significantly higher in patients with moderate SD than in those with mild SD (P < .001). A strong positive correlation was observed between disease severity and FCT measured at right medial condyle (r = .7, P < .001), right lateral condyle (r = .749, P < .001), right intercondylar area (r = .79, P < .001), left medial condyle (r = .624, P < .001), and left intercondylar area (r = .703, P < .001). Further, a moderately positive correlation was observed between disease severity and FCT measured at left lateral condyle (r = .581, P < .001). Increased FCT in patients with SD might be an early indicator of osteoarthritis. However, further studies, especially those evaluating older patients with SD, are required to support our findings.
Collapse
Affiliation(s)
- Sevgi Kulakli
- Giresun University Faculty of Medicine, Department of Dermatology and Venereology, Giresun, Turkey
| | - Fazil Kulakli
- Giresun University Faculty of Medicine, Department of Physical Medicine and Rehabilitation, Giresun, Turkey
| | - Betül Yilmaz
- Giresun University Faculty of Medicine, Department of Physical Medicine and Rehabilitation, Giresun, Turkey
| | - İlker Fatih Sari
- Giresun University Faculty of Medicine, Department of Physical Medicine and Rehabilitation, Giresun, Turkey
| | - Işil Deniz Oğuz
- Giresun University Faculty of Medicine, Department of Dermatology and Venereology, Giresun, Turkey
| |
Collapse
|
4
|
Yilmaz B, Topkan E. Regarding 'Extra-mandibular Osteoradionecrosis After the Treatment of Head and Neck Cancer' by Kovarik et al. Clin Oncol (R Coll Radiol) 2024; 36:e72-e73. [PMID: 37805353 DOI: 10.1016/j.clon.2023.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 09/26/2023] [Indexed: 10/09/2023]
Affiliation(s)
- B Yilmaz
- Department of Oral and Maxillofacial Radiology, School of Dental Medicine, Bahcesehir University, Istanbul, Turkey.
| | - E Topkan
- Department of Radiation Oncology, Faculty of Medicine, Baskent University, Adana, Turkey
| |
Collapse
|
5
|
Sisli SN, Gul-Ates E, Ozcelik TB, Yilmaz B, Revilla-León M. Survival of root canal-treated teeth adjacent to an implant: A retrospective case-control study. J Dent 2023; 139:104742. [PMID: 37839623 DOI: 10.1016/j.jdent.2023.104742] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/29/2023] [Accepted: 10/10/2023] [Indexed: 10/17/2023] Open
Abstract
OBJECTIVES To evaluate the survival of root canal treated (RCT) teeth adjacent to an implant compared with that of RCT teeth of the same patient non-adjacent to an implant. MATERIALS AND METHODS RCT tooth of each patient adjacent to an implant were included in the test group. The control group consisted of another RCT tooth of the same patient; the control RCT tooth was not adjacent to an implant and selected to be of the same type of the RCT tooth in the test group. 72 teeth of 36 patients with at least 4-year follow-up were included. In addition to survival, other clinical and demographic parameters investigated were age, sex, tooth type and position, presence of a crown, presence of retreatment, presence of a post-core, presence of adjacent edentulous area, presence of implant-supported fixed prosthetic restoration on the antagonist tooth and periapical health status. Pearson Chi-Square and Fisher Exact tests were used to compare the test and the control groups with categorical variables (α=0.05). Survival curves were obtained by the Kaplan-Meier method, and the Log-rank test was performed to compare the survival probabilities (α=0.05). RESULTS No significant difference in survival rates was observed between the test and the control groups (p = 0.72). Similarly, no significant relationship was found between the investigated clinical variables and the survival rates of RCT teeth (p>0.05). Survival times differed depending on the presence of an adjacent edentulous area (p<0.001) and the periapical health status (p = 0.026). CONCLUSIONS RCT teeth with unhealed periapical tissues had a shorter cumulative survival time. Similarly, those adjacent to an edentulous area had shorter cumulative and complication-free survival times. CLINICAL SIGNIFICANCE This is the first study to determine the survival outcome of a RCT tooth adjacent to an implant compared to a non-adjacent one in the same patient. Being adjacent to an implant did not have a detrimental effect on the survival time and rate of RCT teeth.
Collapse
Affiliation(s)
- S N Sisli
- Department of Endodontics, School of Dentistry, Baskent University, Ankara, Turkey.
| | - E Gul-Ates
- Department of Biostatistics, Faculty of Medicine, Baskent University, Ankara 06490, Turkey; Institutional Big Data Management Coordination Office, Middle East Technical University, Ankara, Turkey
| | - T B Ozcelik
- Department of Prosthodontics, School of Dentistry, Baskent University, Ankara, Turkey
| | - B Yilmaz
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland; Department of Restorative, Preventive and Pediatric Dentistry, School of Dental Medicine, University of Bern, Bern, Switzerland; Division of Restorative and Prosthetic Dentistry, The Ohio State University, OH, USA
| | - M Revilla-León
- AEGD Residency, Comprehensive Dentistry Department, College of Dentistry, Texas A&M University, Dallas, TX, USA; Affiliate Faculty Graduate Prosthodontics, Restorative Dentistry Department, School of Dentistry, University of Washington, Seattle, WA, USA; Researcher at Revilla Research Center, Madrid, Spain
| |
Collapse
|
6
|
Taskiran E, Yilmaz B, Akgun MY, Kemerdere R, Uzan M, Isler C. Neurophysiologic cut off values for safe resection of patients with supratentorial gliomas. Acta Neurochir (Wien) 2023; 165:4227-4234. [PMID: 37917380 DOI: 10.1007/s00701-023-05865-3] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 10/21/2023] [Indexed: 11/04/2023]
Abstract
BACKGROUND Gliomas have infiltrative nature and tumor volume has direct prognostic value. Optimal resection limits delineated by high-frequency monopolar stimulation with multipulse short train technique is still a matter of debate for safe surgery without (or with acceptable) neurological deficits. It is also an enigma whether the same cut-off values are valid for high and low grades. We aimed to analyze the value of motor mapping/monitoring findings on postoperative motor outcome in diffuse glioma surgery. METHODS Patients who were operated on due to glioma with intraoperative neuromonitorization at our institution between 2017 and 2021 were analyzed. Demographic information, pre- and post-operative neurological deficit, magnetic resonance images, resection rates, and motor evoked potential (MEP) findings were analyzed. RESULTS Eighty-seven patients of whom 55 had high-grade tumors were included in the study. Total/near-total resection was achieved in 85%. Subcortical motor threshold (ScMTh) from resection cavity to the corticospinal tract was ≤ 2mA in 17; 3 mA in 14; 4 mA in 6; 5 mA in 7, and ≥5mA in 50 patients. On the 6th month examination, six patients (5 with high-grade tumor) had motor deficits. These patients had changes in MEP that exceeded critical threshold during monitoring. Receiver operating characteristic analysis revealed 2.5 mA ScMTh as the cut-off point for limb paresis after awakening and 6 months for the groups. CONCLUSIONS Subcortical mapping with MEP monitoring helps to achieve safe wider resection. The optimal safe limit for SCMTh was determined as 2.5 mA. Provided that safe threshold values are maintained in MEP, surgeon may force the functional limits by lowering the SCMTh to 1 mA, especially in low-grade gliomas.
Collapse
Affiliation(s)
- E Taskiran
- Department of Neurology, Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - B Yilmaz
- Department of Neurology, Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - M Y Akgun
- Department of Neurosurgery, Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - R Kemerdere
- Department of Neurosurgery, Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - M Uzan
- Department of Neurosurgery, Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Turkey
| | - C Isler
- Department of Neurosurgery, Istanbul University-Cerrahpasa, Cerrahpasa Faculty of Medicine, Istanbul, Turkey.
| |
Collapse
|
7
|
Söbü E, Yildiz Z, Karaaslan A, Çetin C, Akbeyaz BB, Özçora GK, Yilmaz B. EVALUATION OF FETUIN-A LEVELS IN THE EARLY STAGE OF AUTOIMMUNE THYROIDITIS. Acta Endocrinol (Buchar) 2023; 19:301-306. [PMID: 38356969 PMCID: PMC10863959 DOI: 10.4183/aeb.2023.301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
Context Fetuin-A is a multifunctional protein and is known to be related to metabolic syndrome, vascular calcification, and inflammation. Objective The purpose of this study was to determine the effects of serum fetuin-A levels on autoimmune thyroiditis without thyroid dysfunction. Subjects and Methods This prospective case-control study was performed at the pediatric endocrinology outpatient clinic of a tertiary health institution in Istanbul, Turkey between July 2022 and October 2022. Serum fetuin-A levels were assessed using a human fetuin-A enzyme-linked immunosorbent assay (ELISA) kit (Elabscience Biotechnology, Houston, TX, USA). Results The study included 86 participants, of which 42 were patients with Hashimoto's thyroiditis (HT) and 44 were controls. Autoimmune thyroiditis without thyroid dysfunction was found to be related to lower plasma fetuin-A levels. There were no statistically significant differences in the neutrophil-to-lymphocyte ratio, fasting blood glucose level, insulin level, or HOMA-IR (Homeostatic Model Assessment for Insulin Resistance) value between the groups. A fetuin-A level of ≤162.22 µg/mL (80.95% sensitivity and 70.45% specificity) was found to support the identification of autoimmune thyroiditis. Conclusions The findings of our study suggest that autoimmune thyroiditis without thyroid dysfunction is related to lower fetuin-A levels. Low fetuin-A levels are known to be associated with an increased risk of cardiovascular disease, suggesting that careful monitoring is required in patients with low fetuin-A levels.
Collapse
Affiliation(s)
- E. Söbü
- Department of Pediatric Endocrinology, “Dr. Lutfi Kirdar” City Hospital, Istanbul, Turkey
| | - Z. Yildiz
- Department of Medical Biochemistry, “Dr. Lutfi Kirdar” City Hospital, Istanbul, Turkey
| | - A. Karaaslan
- Department of Pediatrics, “Dr. Lutfi Kirdar” City Hospital, Istanbul, Turkey
| | - C. Çetin
- Department of Pediatrics, “Dr. Lutfi Kirdar” City Hospital, Istanbul, Turkey
| | - B. Berk Akbeyaz
- Department of Pediatrics, “Dr. Lutfi Kirdar” City Hospital, Istanbul, Turkey
| | - G.D. Kaya Özçora
- Gaziantep Hasan Kalyoncu University, Faculty of Medical Sciences, Department of Pediatrics, Gaziantep, Turkey
| | - B. Yilmaz
- Department of Pediatrics, “Dr. Lutfi Kirdar” City Hospital, Istanbul, Turkey
| |
Collapse
|
8
|
Aliyeva A, Guliyev N, Bayramov B, Yilmaz B. PRELIMINARY FINDINGS OF TLR2 AND TLR4 EXPRESSION IN PRETERM NEONATES WITH NECROTIZING ENTEROCOLITIS. Georgian Med News 2023:79-84. [PMID: 37166885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Necrotizing enterocolitis (NEC) is a leading cause of morbidity and mortality in preterm infants. Despite significant advances made in the prevention and treatment of disease so far, there has not been much change in the rate of mortality and morbidity associated with NEC. Although the factors affecting the development of necrotizing enterocolitis are not yet known precisely, prematurity is thought to be the most important risk factor for the development of NEC. This study aims to determine toll-like receptor (TLR) 2 and TLR4 expression levels in preterm neonates. A total of 50 preterm infants (patient: 42, control: 8) were included in the study. TLR2 and TLR4 expression levels were analysed by the RT-qPCR method. While there was no difference in infants' birth weight (g), gestational age (months), mother's age (years), father's age (years), and WBC (109/L); HGB (g/dL) and RBC (1012/L) were found to be significantly higher in the group with NEC (p<0.05). When TLR2 and TLR4 relative gene expression levels of neonates were evaluated (log2), it was determined that there was a significant difference between the two groups (below 1500 g) (p<0.001). TLR4 relative expression (2^-ddCt, above 1500 g) was higher in the NEC group than in the healthy group, while TLR2 relative expression (2^-ddCt, above 1500 g) was higher in the healthy group. TLR2 and TLR4 have been shown to have prominent roles in the development of NEC in experimental animal models and it would be significant to support this with human studies/animal models for a better understanding of the disease. Thus, it is recommended that future studies be carried out on experimental models that better replicate the human body, and dietary factors should be examined in detail.
Collapse
Affiliation(s)
- A Aliyeva
- 1Scientific Research Institute of Pediatrics named after K.Y.Farajova, Baku, Azerbaijan
| | - N Guliyev
- 2Azerbaijan Medical University, Baku Azerbaijan
| | - B Bayramov
- 3Genetic Resources Institute of ANAS, Baku Azerbaijan
| | - B Yilmaz
- 4Department of Biological Sciences, Tata Institute of Fundamental Research, Hyderabad, India
| |
Collapse
|
9
|
Yilmaz B, Somay E. Evaluation of coronavirus disease (COVID-19) awareness of patients undergoing dental interventions in Turkey. Niger J Clin Pract 2021; 24:753-761. [PMID: 34018986 DOI: 10.4103/njcp.njcp_434_20] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Aims We aimed to objectively assess the COVID-19 awareness of the patients requiring dental interventions in our dental clinic by utilizing a newly generated questionnaire, which may serve helpfully in the hard battle against the pandemic in our country. Materials and Methods This study included 306 volunteer adults who applied to our dental clinic for dental interventions during the early days of COVID-19 outbreak in Turkey. All patients responded to a newly created questionnaire composed of four sections with 19 questions those mostly assessing the social and demographic details; like the participant's age, gender, marital status, education status, medical history, basic dental hygiene habits, occupation, and general information about the COVID-19 infection and its protection methods. Results The outcomes of 306 participants revealed that their gender, age, and education status showed significant distinctions about the dissemination of coronavirus via dental interventions. Higher education status was linked to a loftier level of social awareness about the COVID-19 infection and its potential associations with dental interventions. It was observed that the participants were unsatisfactorily cautious against the COVID-19 infection and its dissemination pathways in their social environment, particularly in the specific case of systematic diseases and preventive measures. The primary way of obtaining information about the COVID-19 infection was the electronic websites. Conclusion Deplorably, accentuating the urgent need for further intensive training programs on the relationship between the systemic diseases and COVID-19 infection, and explicit daily care methods in the social environment.
Collapse
Affiliation(s)
- B Yilmaz
- Department of Oral and Maxillofacial Radiology, Dental Clinic of Baskent University, Adana Research and Practice Hospital, Adana, Turkey
| | - E Somay
- Oral and Maxillofacial Surgery, Dental Clinic of Baskent University, Adana Research and Practice Hospital, Adana, Turkey
| |
Collapse
|
10
|
Kiremitli T, Kiremitli S, Akselim B, Yilmaz B, Mammadov R, Tor IH, Yazici GN, Gulaboglu M. Protective effect of Coenzyme Q10 on oxidative ovarian and uterine damage induced by methotrexate in rats. Hum Exp Toxicol 2021; 40:1537-1544. [PMID: 33745333 DOI: 10.1177/09603271211002891] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 11/15/2022]
Abstract
Methotrexate (MTX) has toxic effects on the uterus and ovaries via oxidative stress. Coenzyme Q10 (CoQ10) is an important component in electron transport in the mitochondria and an antioxidant in cellular metabolism through the inhibition of lipid peroxidation. The aim of this study was to investigate the preventive effects of CoQ10 on MTX-induced utero-ovarian damage and oxidative stress in rats.In this experimental study, 30 albino Wistar female rats were divided randomly into three groups. Once a day for a month, 10 mg/kg of CoQ10 was orally administered to the rats in the MTX+CoQ10 group, while the same volume of olive oil was administered orally to the other two groups. One hour thereafter, 20 mg/kg of MTX was injected intraperitoneally into the rats in the MTX and MTX+CoQ10 groups; the remaining group was the control. At the end of the month, biochemical and histopathologic examinations were performed on the extracted uteri and ovaries. In the uterine ovarian tissues of the animals in the MTX group, there was an increase in oxidative stress mediators and a decrease in antioxidant and anti-inflammatory mediators, but these trends were reversed in the MTX+CoQ10 group, demonstrating the antioxidant effects of CoQ10. MTX leads to oxidative stress-related ovarian and uterine injury, and CoQ10 may be useful for protecting ovarian and uterine tissue from such injury.
Collapse
Affiliation(s)
- T Kiremitli
- Medical Faculty, Department of Obstetrics and Gynaecology, Erzincan Binali Yildirim University, Erzincan, Turkey
| | - S Kiremitli
- Medical Faculty, Department of Obstetrics and Gynaecology, Erzincan Binali Yildirim University, Erzincan, Turkey
| | - B Akselim
- Department of Gynaecology and Obstetrics, Bursa Yuksek Ihtisas Training and Research Hospital, Bursa, Turkey
| | - B Yilmaz
- Medical Faculty, Department of Obstetrics and Gynaecology, Erzincan Binali Yildirim University, Erzincan, Turkey
| | - R Mammadov
- Medical Faculty, Department of Pharmacology, Erzincan Binali Yildirim University, Erzincan, Turkey
| | - I H Tor
- Department of Anesthesia, Erzurum Regional Education and Research Hospital, University of Health Sciences, Erzurum, Turkey
| | - G N Yazici
- Medical Faculty, Department of Histology, Erzincan Binali Yildirim University, Erzincan, Turkey
| | - M Gulaboglu
- Medical Faculty, Department of Biochemistry, Ataturk University, Erzurum, Turkey
| |
Collapse
|
11
|
Demir MK, Yapıcıer O, Oral A, Yilmaz B, Kilic T. Non-functional recurrent pituitary adenoma with intracranial metastasis-Pituitary carcinoma: A case report and review of the literature. Neurochirurgie 2021; 68:106-112. [PMID: 33652067 DOI: 10.1016/j.neuchi.2021.02.006] [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: 10/21/2020] [Revised: 12/23/2020] [Accepted: 02/06/2021] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Pituitary carcinomas are rare, with only a few case reports to date. We present a null cell type non-functioning pituitary carcinoma (NFPC) with intracranial metastases and a review of the literature. CASE REPORT A 56-year-old male with a history of an aggressive pituitary adenoma was admitted. Initial MRI highlighted a large intracranial mass with leptomeningeal involvement, simulating meningioma. Based on his previous pathology report of the sellar mass, a diagnosis of null cell type non-functioning pituitary carcinoma has been made. CONCLUSIONS An aggressive recurrent pituitary tumor with suprasellar and/or cavernous sinus invasion is the main characteristics of the NFPC. Single or multiple enhancing dural-based mass(es) mimicking meningioma is the most common MRI finding. The proof of malignancy is the same histopathological features of the recurrent aggressive pituitary tumor in the metastases. The histology alone is not distinctive in terms of malignancy. Most patients require a combined surgery, radiotherapy and chemotherapy.
Collapse
Affiliation(s)
- M K Demir
- Department of Radiology, Bahçeşehir University School of Medicine, Göztepe Medical Park Training and Education Hospital, Istanbul, Turkey.
| | - O Yapıcıer
- Department of Pathology, Bahçeşehir University School of Medicine, Göztepe Medical Park Training and Education Hospital, Istanbul, Turkey.
| | - A Oral
- Bahçeşehir University School of Medicine, Istanbul, Turkey.
| | - B Yilmaz
- Department of Neurosurgery, Bahçeşehir University School of Medicine, Göztepe Medical Park Training and Education Hospital, Istanbul, Turkey.
| | - T Kilic
- Department of Neurosurgery, Bahçeşehir University School of Medicine, Göztepe Medical Park Training and Education Hospital, Istanbul, Turkey.
| |
Collapse
|
12
|
Yilmaz B, Yalcin ED. Retrospective evaluation of cone-beam computed tomography findings of odontogenic cysts in children and adolescents. Niger J Clin Pract 2021; 24:93-99. [PMID: 33473032 DOI: 10.4103/njcp.njcp_46_20] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Odontogenic cysts develop from the epithelium of dental structures and generally grow slowly. In children and adolescents, cysts usually grow faster than adults and require much knowledge for diagnoses and treatments. Aims This study aimed to determine the diagnosis and treatment of odontogenic cysts in different age groups by evaluating the type of lesions, age, gender, and anatomical distribution of odontogenic cysts seen in children and adolescents by cone-beam computed tomography. Materials and Methods A total of 42 odontogenic cysts (radicular, dentigerous cyst, and odontogenic keratocyst) were determined in children and adolescents aged 7-18 years. Cone-beam computed tomography images of odontogenic cysts were analyzed in terms of types, age, sex, anatomical location, height, width, depth, scalloped borders, lesion shapes, tooth displacement, root resorption, and association with an unerupted tooth. Results There was a significant correlation between odontogenic cyst types and age groups, scalloped borders, lesion shape, tooth displacement, root resorption, and association with an unerupted tooth. Conclusion When odontogenic cysts seen in children and adolescents are examined with cone-beam computed tomography, the radicular cyst was the most common form and was predominated in the 13-18 years age group and in boys. Differences in terms of scalloped borders, lesion shape, tooth displacement, root resorption, and association with unerupted teeth were noticed. The knowledge of the distribution and properties of odontogenic cysts in pediatric patients will help diagnose the lesions during clinical and radiological examinations and make appropriate treatment planning.
Collapse
Affiliation(s)
- B Yilmaz
- Department of Oral and Maxillofacial Radiology, Dental Clinic of Baskent University Adana Research and Practice Hospital, Adana, Turkey
| | - E D Yalcin
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Gaziantep University, Gaziantep, Turkey
| |
Collapse
|
13
|
Cavusoglu Y, Kaya H, Murat S, Yilmaz B. Potantial clinical application of potassium binders in patients with chronic heart failure in real life clinical practice: results from TREAT HF study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Purpose
Hyperkalemia is increasingly prevalent and life-threatening condition in heart failure (HF). In clinical practice, hyperkalemia is also an important barrier to optimal application of RAASi. New potassium binders, sodium zirconium cyclosilicate and patiromer, were developed for the treatment of hyperkalemia. TREAT HF data were analyzed for the evaluation of potential clinical application of potassium binders in real life clinical care in HF patients.
Methods
TREAT HF is a network which undertakes multicenter, national, observational studies designed to evaluate HF patients' clinical characteristics and current treatment modalities. 1028 patients with the diagnosis of chronic HF, median age 64 years and median LVEF 30% who had potassium and GFR data were included in this analysis. In this patient population, 847 patients (82.6%) were receiving beta blockers, 739 (71.9%) were receiving ACE inhibitors or ARBs and 518 (50.4%) were receiving MRA. Patients with hyperkalemia (serum potassium ≥5.1 mEq/L) were considered candidate for potassium binders based on the criteria of HARMONIZE study. According to eGFR (mL/min) level, renal dysfunction was subclassified as: stage-1 (eGFR ≥90) (n=211), stage-2 (eGFR 60-<90) (n=398), stage-3 (eGFR 30-<60) (n=306) and stage 4–5 (eGFR <30) (n=113).
Results
In study population, median potassium level was 4.5 mEq/L, median creatinin level was 1.1 mg/dL and median eGFR was 65.5 mL/min. Overall, 82.9% of patients had normal serum potassium levels (≥3.5–5 mEq/l) and 14.3% of patients (n=147) were found to have hyperkalemia (≥5.1 mEq/L) and, hypokalemia was found in 2.8% of patients (n=30). Hyperkalemia was present in 10.9% (n=23) of patients with stage-1, 12.6% (n=50) of patients with stage-2, 17.0% (n=52) of patients with stage-3 and 19.5% (n=22) of patients with stage 4–5 renal dysfunction. In patients with eGFR <60 ml/min (n=419), hyperkalemia was much more prevalent than those with eGFR ≥60 ml/min (n=609) (17.6% and 11.9% respectively, p=0.011). In patients with stage 4–5 renal dysfunction who were receiving ACEI/ARB or combination of ACEI/ARB and MRA (RAASi), more patients had hyperkalemia than those not receiving RAASi therapy (23.4%, 20.0% and 12.5%, respectively).
Conclusions
This study suggested that in real life clinical practice, 14.3% of HF patients have hyperkalemia and seem to be eligible for the treatment of potassium binders. The risk of hyperkalemia increases with advanced stages of renal dysfunction and the use of RAASi, showing an increased clinical need for potassium binders in HF patients with renal dysfunction and in those receiving RAASi.
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- Y Cavusoglu
- Eskisehir Osmangazi University, Cardiology, Eskisehir, Turkey
| | - H Kaya
- Canakkale 18 March University, Cardiology, Canakkale, Turkey
| | - S Murat
- Eskisehir Osmangazi University, Cardiology, Eskisehir, Turkey
| | - B Yilmaz
- Dokuz Eylul University, Cardiology, Izmir, Turkey
| |
Collapse
|
14
|
Abstract
Backround Ultrasonography is difficult to distinguish between endometrial pathologies and often requires curettage. ARFI (Acoustic Radiation Force-Based Elasticity Imaging) is a new ultrasonography elastography method. Using ARFI, it is possible to obtain information about the likelihood of the tissue benign or malignant. Aim The aim of this study is to evaluate the contribution of ARFI to differentiate endometrial pathologies in hysterectomy specimens. Subjects and Methods Our study was prospectively, January-May 2017, performed in randomly 45 cases of 41-91 years of age (mean 58.3 years) who have decided to have hysterectomy. Hysterectomy was performed for uterine prolapse and endometrial hyperplasia in elderly patients and menorrhagia in young patients. Pathology results were compared with ARFI values and endometrial thickness. ANNOVA test was used for the comparison of ARFI values. Results Pathology revealed 14 cases of endometrial atrophy, 11 cases of proliferative phase, 10 cases of polyp, 6 cases of endometrial hyperplasia, and 4 cases of endometrium cancer. There is a statistically significant difference between mean ARFI values of endometrium, subendometrium, and myometrium of the groups (P < 0.05). There was a statistically significant difference between the mean endometrial thickness of the groups (P < 0.05). Conclusion Endometrium ARFI contributes to the differential diagnosis of endometrial pathologies. Subendometrial and myometrial ARFI values decrease in polyps and increase in hyperplasia. Our study shows that the addition of subendometrium ARFI to gray-scale sonography before deciding on invasive procedures in endometrial pathologies may improve diagnostic accuracy. We concluded that further in vivo studies will establish the usefulness of this technique for preoperative diagnostic measures.
Collapse
Affiliation(s)
- H C Cenkeri
- Department of Radiology, Okan University, Istanbul, Turkey
| | - T B Bidaci
- Department of Obstetrics and Gynecology, Baskent University, Istanbul, Turkey
| | - B Yilmaz
- Department of Radiology, Okan University, Istanbul, Turkey
| | - G Desteli
- Department of Obstetrics and Gynecology, Baskent University, Istanbul, Turkey
| |
Collapse
|
15
|
Sitaropoulou V, Yilmaz HN, Yilmaz B, Kucukkeles N. Three-dimensional evaluation of treatment results of the Alt-RAMEC and facemask protocol in growing patients. J Orofac Orthop 2020; 81:407-418. [PMID: 32676721 DOI: 10.1007/s00056-020-00240-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 10/18/2019] [Accepted: 05/12/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE The aim of this retrospective study was to evaluate the skeletal, dental, and soft tissue effects of the alternating rapid maxillary expansions and constrictions (Alt-RAMEC) protocol combined with a facemask in prepubertal patients. METHODS The study group (mean age 9.74 ± 1.46 years) consisted of 20 patients with class III malocclusion characterized by maxillary retrognathism. They were treated with a facemask for 7 months following a 9‑week Alt-RAMEC protocol. Cone-beam computed tomography (CBCT) records and three-dimensional (3D) photographs taken before (T0) and after the protraction and retention period (T1) were evaluated. The study group was compared with a well-matched control group of 16 untreated patients (mean age 9.44 ± 0.79 years) with the same malocclusion. The records for the control group included cephalometric radiographs and 3D photographs. RESULTS In the study group, significant forward movements of A point (3.49 mm), nasal (2.91 mm) and zygomatic bones were achieved. Intermolar, internasal, and interzygomatic widths increased. Soft tissue points followed the hard tissue movements, apart from b and pog. In the control group, A (0.97 mm), B (1.69 mm), Pog, and b points presented forward movement. Significant differences were found regarding the forward movement of the maxilla between the groups. CONCLUSION The Alt-RAMEC/facemask protocol was effective not only in the maxillary region but also in the midface.
Collapse
Affiliation(s)
| | - H N Yilmaz
- Faculty of Dentistry, Department of Orthodontics, Marmara University, Istanbul, Turkey.
| | - B Yilmaz
- Faculty of Dentistry, Department of Orthodontics, Bezmialem Vakıf University, Istanbul, Turkey
| | - N Kucukkeles
- Faculty of Dentistry, Department of Orthodontics, Bezmialem Vakıf University, Istanbul, Turkey
| |
Collapse
|
16
|
Somay E, Yilmaz B. Comparison of clinical and magnetic resonance imagining data of patients with temporomandibular disorders. Niger J Clin Pract 2020; 23:376-380. [PMID: 32134038 DOI: 10.4103/njcp.njcp_492_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background There are important criteria in the diagnosis of temporomandibular disorders (TMDs). These become significant if supported by magnetic resonance imaging (MRI). Otherwise, these findings alone may not be sufficient to diagnose TMD. Aim This study compared the relationship between clinical findings indicated by patient and physician and MRI results in the diagnosis of TMD. Materials and Methods Clinical examinations were performed in patients suspected of TMD for pain, difficulty in mouth opening, masticatory muscle tenderness, deviation (during mouth opening), normal mouth opening, and presence of bruxism. The MRI findings of the patients were compared with the clinical examinations. Results MRI and clinical examination data of 136 patients were examined. The results showed significant correlations between deviation, normal mouth opening, and MRI results of TMD (P < 0.05). No correlation was found between age groups and clinical findings of TMD. TMJ was determined in normal limits in 61% of MRI results. Conclusions Except for deviation and normal mouth opening, complaints and clinical findings determined by the clinicians do not support TMD. This may be due to the subjective nature of the clinical findings, and MRI results are needed for precise results.
Collapse
Affiliation(s)
- E Somay
- Department of Oral and Maxillofacial Surgery, Dental Clinic of Baskent University Adana Research and Practice Hospital, Adana, Turkey
| | - B Yilmaz
- Department of Specialist in Oral and Maxillofacial Radiology, Dental Clinic of Baskent University Adana Research and Practice Hospital, Adana, Turkey
| |
Collapse
|
17
|
Yilmaz B, Sirin E, Kilinc BE, Ozdemir G, Komur B, Heybeli N. Investigation of the Optimal Interval for Staged Total Knee Arthroplasty for the Treatment of Advanced Bilateral Gonarthrosis. Acta Chir Orthop Traumatol Cech 2020; 87:203-209. [PMID: 32773022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
PURPOSE OF THE STUDY This study investigated whether there was an optimal interval between two operations for total knee arthroplasties in patients with advanced bilateral gonarthrosis scheduled to undergo staged total knee arthroplasty (TKA). MATERIAL AND METHODS A prospective cohort of 219 patients (136 females, 83 males) undergoing staged total knee arthroplasty for the treatment of advanced bilateral gonarthrosis were followed for up to 12 months. The mean was 69.51±5.02 (56-80) years. Patients were categorized into five groups based on the time between the first and second operations; Group I (21-90 days), Group II (91-180 days), Group III (181-270 days), Group IV (271-360 days), and Group V (more than 360 days). Patients were evaluated based on time from surgery and were assigned to corresponding groups. The data recorded included age, body mass index (BMI), side of operated knee, complications, and radiological and clinical findings. Visual analog scale (VAS) for non-operated knees was applied. Activities of Daily Living Score (ADLS) was applied to the patients at last follow-up. RESULTS No statistically significant difference was noted in BMI values (p=0.634), range of joint motion (RJM) (p=0.940) and age (p=0.785) distribution between the five groups. In Group I, the mean VAS score increased by 7.83 to 7.98, 7.86 to 8.53 in Group II, by 7.85 to 8.54 in Group III, 7.85 to 8.59 in Group IV, and 7.88 to 8.64 in Group V. There was no statistically significant difference in preoperative ADLS between the groups (p=0.064), but there was a statistically significant difference in postoperative ADLS (p=0.001). Group I patients had significantly lower postoperative ADLS compared to the other groups (p=0.001). The mean increase in postoperative ADLS versus preoperative scores of all groups were statistically significant The most significant improvements occurred in Groups II and III. Similarly, preexisting pain in the non-operated knee started to increase in Group II and continued in all groups. DISCUSSION Given all these findings, we believe that it is reasonable to advise patients to receive their second TKA, 3-6 months after their initial TKA, as this interval will allow for the greatest improvements in functional and daily living activities, and pain in the non-operated knee simultaneously becomes more severe. This recommended interval would minimize both the functional problems with the operated extremity due to pain, and deformity and dysfunction in the non-operated knee and the subsequent overloading. CONCLUSIONS Even though a number of factors influence the optimal interval for staged TKAs in bilateral gonarthrosis, an interval of 91-270 days appears to be the optimal interval between surgeries in terms of minimizing pain and maximizing ADL s and knee scores. Key words: bilateral total knee arthroplasty, optimal interval, knee society scores, activities of daily living.
Collapse
Affiliation(s)
- B Yilmaz
- Health Science University, Fatih Sultan Mehmet Training and Research Hospital, Department of Orthopaedic Surgery and Traumatology, Istanbul, Turkey
| | | | | | | | | | | |
Collapse
|
18
|
Dundar M, Yilmaz B. Automatic classification of Alzheimer disease based on MRI volumetric features. J Biotechnol 2019. [DOI: 10.1016/j.jbiotec.2019.05.047] [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]
|
19
|
Yilmaz B, Akbulut G, Yurtdaş G. SUN-PO150: Evaluation of Dietary Fiber Intake and Gastrointestinal Symptoms of Patients with Irritable Bowel Syndrome. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32783-9] [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: 11/25/2022]
|
20
|
Fata S, Tokat MA, Bagardi N, Yilmaz B. The traditional practices used by couples with fertility problems, affecting factors, expected benefits, and learning paths: The Turkey Sample. Niger J Clin Pract 2019; 22:806-811. [PMID: 31187766 DOI: 10.4103/njcp.njcp_383_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objective Studies related to traditional practices and benefits have been usually performed among women. The literature regarding the traditional practices used by men in Turkey and around the world and their expected benefits is more limited. The aim of this study was to examine the traditional practices used by couples with fertility problems, affecting factors, expected benefits, and learning paths. Materials and Methods The descriptive study was performed between May and July 2017 in Izmir, Turkey. In total, 151 women with infertility were included. The data related to the use of this practice by men were obtained from women partners. "Personal information form" and "traditional practices evaluation form" were used to obtain the data. Results In total, 35.8% of the women and 25.8% of the men used traditional practices. The 24.4% of women and 52.1% of men used other practices such as figs, onion cures, and hacamat, whereas 18.2% of women and 14.9% of men used various herbs. The benefits they expected from traditional practices were facilitating conception, ensuring follicle development in women, increasing sperm count, and quality and facilitating conception in men. Overall, 37.0% of women learned of these practices from their friends, 30.7% of men learned from their partners, 20.4% of women and 20.6% of men learned from the internet. Conclusion The couples in this study widely used traditional practices to solve fertility problems and learned from their friends and partners.
Collapse
Affiliation(s)
- S Fata
- Department of Gynecology and Obstetrics Nursing, Dokuz Eylul University, Institute of Health Sciences, Izmir, Turkey
| | - M A Tokat
- Department of Gynecology and Obstetrics Nursing, Dokuz Eylul University, Nursing Faculty, Izmir, Turkey
| | - N Bagardi
- IVF Center, Health Science University Tepecik Training and Research Hospital, Izmir, Turkey
| | - B Yilmaz
- Department of Women's Health and Birth, Health Science University Tepecik Training and Research Hospital, Izmir, Turkey
| |
Collapse
|
21
|
Ethemoglu MS, Kutlu S, Seker FB, Erdogan CS, Bingol CA, Yilmaz B. Effects of agomelatine on electrocorticogram activity on penicillin-induced seizure model of rats. Neurosci Lett 2018; 690:120-125. [PMID: 30213622 DOI: 10.1016/j.neulet.2018.09.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 09/05/2018] [Accepted: 09/08/2018] [Indexed: 10/28/2022]
Abstract
Agomelatine is a new antidepressant drug acting as an antagonist of 5-hydroxytryptamine receptor 2C (5-HTR2C) and agonist of melatonergic receptors 1 and 2 (MT1 and MT2). Because of this dual action, it is an atypical antidepressant. The aim of this study was to investigate chronic anticonvulsant effects of agomelatine on penicillin-induced epilepsy model. Adult male Sprague-Dawley rats divided into four groups and were administered with tap water (vehicle), and agomelatine doses of 10 mg/kg, 50 mg/kg and 100 mg/kg for 14 days via oral gavage. After the last doses were given, epileptic seizures were induced by intracortical penicillin (500 IU/2.5 μl) application in rats under urethane (1.25 g/kg intraperitoneal) anesthesia. Electrocorticogram (ECoG) recordings were obtained from the somatomotor cortex through 90 min, and spike frequencies and amplitudes were analyzed. The spike frequency analyses revealed that only 50 mg/kg agomelatine administration decreased the spike frequencies of hypersynchronous discharge of neurons caused by penicillin (p < 0.05). No significant differences in amplitudes between experimental groups were observed. In addition, mRNA expressions of vesicular glutamate transporter 1 (VGLUT1) and vesicular gamma-aminobutyric acid transporter (VGAT) in response to the agomelatine active dose, 50 mg/kg, showed no significant effect of agomelatine on the mRNA expression. Our results indicate that chronic treatment with agomelatine may have potential anticonvulsant effects. Agomelatine may be a promising drug for epilepsy patients having depression due to its antiepileptic and antidepressant effects.
Collapse
Affiliation(s)
- M S Ethemoglu
- Yeditepe University, Medical School, Department of Physiology, Ataşehir, İstanbul, Turkey
| | - S Kutlu
- Necmettin Erbakan University, Meram Faculty of Medicine, Department of Physiology, Meram, Konya, Turkey
| | - F B Seker
- Yeditepe University, Medical School, Department of Physiology, Ataşehir, İstanbul, Turkey
| | - C S Erdogan
- Yeditepe University, Medical School, Department of Physiology, Ataşehir, İstanbul, Turkey
| | - C A Bingol
- Yeditepe University, Medical School, Department of Neurology, Ataşehir, İstanbul, Turkey
| | - B Yilmaz
- Yeditepe University, Medical School, Department of Physiology, Ataşehir, İstanbul, Turkey.
| |
Collapse
|
22
|
Bie P, Brandes RP, Deuchars SA, Eisner DA, Fandrey J, Hecker M, Louch WE, Taira T, Yilmaz B. Bringing European physiologists together. Acta Physiol (Oxf) 2018; 222:e13043. [PMID: 29377580 DOI: 10.1111/apha.13043] [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: 11/26/2022]
Affiliation(s)
- P. Bie
- Department of Cardiovascular and Renal Research; Institute of Molecular Medicine; University of Southern Denmark; Odense Denmark
| | - R. P. Brandes
- Institut für Kardiovaskuläre Physiologie; Goethe-University Frankfurt; Frankfurt am Main Germany
| | - S. A. Deuchars
- School of Biomedical Sciences; University of Leeds; Leeds UK
| | - D. A. Eisner
- Unit of Cardiac Physiology; University of Manchester; Manchester UK
| | - J. Fandrey
- Institut für Physiologie; Universität Duisburg-Essen; Essen Germany
| | - M. Hecker
- Institute of Physiology and Pathophysiology; Heidelberg University; Heidelberg Germany
| | - W. E. Louch
- Institute for Experimental Research; University of Oslo and Oslo University Hospital; Ullevål Oslo Norway
| | - T. Taira
- Department of Veterinary Biosciences and Neuroscience Center; University of Helsinki; Helsinki Finland
| | - B. Yilmaz
- Department of Physiology; Medical School; Yeditepe University; Istanbul Turkey
| | | |
Collapse
|
23
|
Askin H, Yilmaz B, Gulcin I, Taslimi P, Bakirci S, Yildiz M, Kandemir N. Antioxidant Activity of the Aqueous Extract of Iris taochia and Identification of its Chemical Constituents. Indian J Pharm Sci 2018. [DOI: 10.4172/pharmaceutical-sciences.1000425] [Citation(s) in RCA: 7] [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: 11/09/2022] Open
|
24
|
Tug N, Ayvaci Tasan H, Sargin MA, Dogan Taymur B, Ayar A, Kilic E, Yilmaz B. Effects of erythropoietin on spontaneous and oxytocin induced myometrial contractions in the nonpregnant rat. Eur Rev Med Pharmacol Sci 2017; 21:5028-5033. [PMID: 29228453 DOI: 10.26355/eurrev_201711_13814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Erythropoietin (EPO) is a glycoprotein hormone that regulates erythropoiesis. EPO activity has also been detected in a variety of tissue including the nervous system, and female and male reproductive organs. It has been shown that EPO causes relaxation in vascular smooth muscle. In the present study, we have investigated effects of EPO on spontaneous and oxytocin-induced contractions of non-pregnant rat myometrium. MATERIALS AND METHODS Myometrial stripes were obtained from adult Wistar rats at the oestrous stage. The samples were placed in an isolated organ chamber under physiological conditions and 1 g passive tension. Epoetin beta (rEPO) was added cumulatively at 0.1, 1 and 10 IU/ml concentrations to the myometrial samples showing regular spontaneous contractions for periods of 30 min. Frequency and amplitude of contractions were electrophysiologically recorded and analyzed by using a BIOPAC data acquisition system. RESULTS rEPO inhibited both area under curve and frequency of spontaneous contractions (ANOVA, n1, 2 = 9, f1 = 20.938, f2 = 20.492, p1,2 = 0.000). The inhibitory effect was insignificant at 0.1 mIU/ml rEPO level (Tukey HSD, p1 = 0.051, p2 = 0.581). In the oxytocin treated myometrial samples, a single dose of 1 IU/ml rEPO was studied. The area under curve and frequency values of these samples were inhibited by rEPO (Student's t-test, n = 9, t1 = 4.776, p1 = 0.000; t2 = 2.835, p2 = 0.012, respectively). CONCLUSIONS rEPO inhibited spontaneous and oxytocin-induced rat myometrial contractions at 1 and 10 IU/ml concentrations. It appeared that the effect was dose-dependent.
Collapse
Affiliation(s)
- N Tug
- Obstetrics and Gynecology Department, Fatih Sultan Mehmet Research Hospital, Istanbul, Turkey.
| | | | | | | | | | | | | |
Collapse
|
25
|
Yilmaz B, Nazik G, Kucukoglu K. GC-MS Determination of Mexiletine After Derivatization with N-Methyl-N-(Trimethylsilyl) Trifluoroacetamide in Pharmaceutical Formulatios and Comparison with HPLC Method. Pharm Chem J 2017. [DOI: 10.1007/s11094-017-1646-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
26
|
Ethemoglu MS, Seker FB, Akkaya H, Kilic E, Aslan I, Erdogan CS, Yilmaz B. Anticonvulsant activity of resveratrol-loaded liposomes in vivo. Neuroscience 2017; 357:12-19. [PMID: 28577913 DOI: 10.1016/j.neuroscience.2017.05.026] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [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: 03/24/2017] [Revised: 05/12/2017] [Accepted: 05/12/2017] [Indexed: 12/25/2022]
Abstract
Resveratrol (3,5,4'-stilbenetriol), a natural polyphenol produced by various plants, has attracted attention over the past decade because of its multiple beneficial properties, including anti-inflammatory, anti-oxidant and chemopreventive, yet, there is limited information about its antiepileptic effects. Moreover, its poor solubility in water and low bioavailability are the challenging issues. In the present study, we aimed to investigate effects of free resveratrol and resveratrol delivered in amphipathic liposomal delivery system, which has a high blood-brain barrier crossing potential, on penicillin-induced epileptic seizure model. For this purpose, adult male Sprague-Dawley rats were divided into four groups as saline (Control), liposome (LIP), free resveratrol (RES) and resveratrol+liposome (RES+LIP). Penicillin-induced epileptic activity was recorded for 120 min by electrocorticography. Glutathione S-transferase (GST), Glutathione (GSH), Superoxide dismutase (SOD) and Malondialdehyde (MDA) assays were performed in brain tissues collected. Our results showed that RES+LIP was the most effective anticonvulsant treatment on penicillin-induced epileptic seizures when compared to control, as RES+LIP immediately decreased the number of spikes per minute. GST and SOD activity, as well as the GSH levels, were significantly increased in the RES+LIP group as compared with the control group. Also, the MDA levels were significantly higher in the RES+LIP compared to RES and control groups. In conclusion, RES+LIP treatment was more effective on the decrease in spike frequency and spike amplitudes than other treatments. Our results suggest that the RES+LIP is more effective than RES on penicillin-induced epileptiform activity.
Collapse
Affiliation(s)
- M S Ethemoglu
- Yeditepe University, Medical School, Department of Physiology, Ataşehir, İstanbul, Turkey
| | - F B Seker
- Yeditepe University, Medical School, Department of Physiology, Ataşehir, İstanbul, Turkey
| | - H Akkaya
- Yeditepe University, Experimental Research Center, Ataşehir, İstanbul, Turkey
| | - E Kilic
- Istanbul Medipol University, Department of Physiology, Istanbul, Turkey
| | - I Aslan
- Yeditepe University, Faculty of Pharmacy, Ataşehir, İstanbul, Turkey
| | - C S Erdogan
- Yeditepe University, Medical School, Department of Physiology, Ataşehir, İstanbul, Turkey
| | - B Yilmaz
- Yeditepe University, Medical School, Department of Physiology, Ataşehir, İstanbul, Turkey.
| |
Collapse
|
27
|
Algul S, Ozcelik O, Yilmaz B. Evaluation of relationship between aerobic fitness level and range of isocapnic buffering periods during incremental exercise test. Cell Mol Biol (Noisy-le-grand) 2017; 63:78-82. [DOI: 10.14715/cmb/2017.63.3.15] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 05/02/2017] [Accepted: 03/18/2017] [Indexed: 11/18/2022]
|
28
|
Tröbs RB, Yilmaz B, Roll C, Alrefai M. Direct bladder hernia after indirect hernia repair in extremely low birth weight babies: two case reports and a review of the literature. J Med Case Rep 2017; 11:15. [PMID: 28088918 PMCID: PMC5238521 DOI: 10.1186/s13256-016-1171-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 12/05/2016] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Inguinal hernia repair is the most common surgical procedure in babies. Despite a meticulous technique, relapses may occur. The occurrence of a direct bladder wall hernia in relapses has never before been reported in the literature. CASE PRESENTATION Here, we report two cases of direct bladder herniation: a white baby boy born after 25 weeks of gestation and a white baby boy born after 26 weeks of gestation. Both of the formerly extremely low birth weight babies were affected after open bilateral hernia repair. Recurrent hernias developed on the right side, and direct bladder herniation was identified intraoperatively. In one case, laparoscopy was applied to identify a supravesical type of hernia. Immaturity and a difficult postnatal course might have contributed to hernia relapse in these cases. CONCLUSIONS Misinterpretation of bladder herniation might have disastrous consequences. Laparoscopy is a helpful tool in comparable cases.
Collapse
Affiliation(s)
- R B Tröbs
- Department of Pediatric Surgery, St. Mary's Hospital Herne, St. Elisabeth Group, Ruhr-University of Bochum, Widumer Str. 8, 44627, Herne, Germany.
| | - B Yilmaz
- Clinic of Surgery and Pediatric Surgery, Friedrich-Ebert-Str. 13, 33699, Bielefeld, Germany
| | - C Roll
- Center of Perinatology, Department of Neonatology and Pediatric Intensive Care, Vest Children's Hospital, University of Witten-Herdecke, Dr.-Friedrich-Steiner Str. 5, 45711, Datteln, Germany
| | - M Alrefai
- Department of Pediatric Surgery, St. Mary's Hospital Herne, St. Elisabeth Group, Ruhr-University of Bochum, Widumer Str. 8, 44627, Herne, Germany
| |
Collapse
|
29
|
Yilmaz B, Çicek B, Kaner G. SUN-P227: Are Sleep Duration and Sleep Quality Associated with Obesity Among Turkish Adolescents? Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30570-2] [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: 11/29/2022]
|
30
|
Yilmaz B, Çiçek B, Kaner G. SUN-P228: Obesity Prevalence and Associated Risk Factors in Adolescents. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30571-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
31
|
Yilmaz B, Göktepe S, Yaşar E, Kesikburun S, Adıgüzel E. The effect of autonomic nervous system dysfunction on oxygen consumption during daily living activities in patients with spinal cord injury. Spinal Cord 2016; 55:300-303. [PMID: 27431660 DOI: 10.1038/sc.2016.111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 05/17/2016] [Accepted: 05/28/2016] [Indexed: 11/09/2022]
Abstract
STUDY DESIGN Case-control study. OBJECTIVES To investigate the level of autonomic nervous system dysfunction in patients with spinal cord injury and to determine its effect on the basal metabolic rate and oxygen consumption during daily living activities. SETTING Turkish Armed Forces Rehabilitation Center, Ankara, Turkey. METHODS Thirty-six patients with chronic spinal cord injury (SCI) were allocated into two groups according to the presence of autonomic nervous system dysfunction. Autonomic nervous system dysfunction was investigated with the measurements of blood pressure and heart rate during urodynamic examination and several provocative maneuvers (standing at tilt table, forcing deep respiration and Valsalva). Groups were compared in terms of the basal metabolic rate and oxygen consumption during daily living activities. Measurement of the basal metabolic rate was determined by indirect calorimetry under standardized conditions. Total body fat mass and lean tissue mass were measured in all participants using dual-energy X-ray absorptiometry by standard methods. Telemetric intrapulmonary gas exchange analyzer was used to measure oxygen consumption during daily living activities. RESULTS There was no statistically significant difference between the groups in age, time since injury, body mass lean and fat rates, or sensory and motor scores (P>0.05). Basal metabolic rates and oxygen consumption during daily living activities were not different between the groups (P>0.05). CONCLUSIONS These results suggest that the presence of autonomic dysfunction does not change oxygen consumption at rest and during daily living activities.
Collapse
Affiliation(s)
- B Yilmaz
- Department of Physical Medicine and Rehabilitation, Gülhane Military Medical Academy, Turkish Armed Forces Rehabilitation Center, Ankara, Turkey
| | - S Göktepe
- Department of Physical Medicine and Rehabilitation, Gülhane Military Medical Academy, Turkish Armed Forces Rehabilitation Center, Ankara, Turkey
| | - E Yaşar
- Department of Physical Medicine and Rehabilitation, Gülhane Military Medical Academy, Turkish Armed Forces Rehabilitation Center, Ankara, Turkey
| | - S Kesikburun
- Department of Physical Medicine and Rehabilitation, Gülhane Military Medical Academy, Turkish Armed Forces Rehabilitation Center, Ankara, Turkey
| | - E Adıgüzel
- Department of Physical Medicine and Rehabilitation, Gülhane Military Medical Academy, Turkish Armed Forces Rehabilitation Center, Ankara, Turkey
| |
Collapse
|
32
|
Yilmaz B, Can G, Ucmak F, Arslan AO, Solmaz I, Unlu O, Düzenli S, Korkmaz U, Kurt M, Senates E. Polymorphisms in the IL28B gene (rs12979860, rs8099917) and the virological response to pegylated interferon therapy in hepatitis D virus patients. Acta Gastroenterol Belg 2016; 79:206-10. [PMID: 27382939] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
AIM Few data are available regarding the effects of interleukin 28B (IL28B) polymorphisms in chronic hepatitis D (CHD) patients. This study investigated the relationship between IL28B poly-morphisms and the response of patients with CHD infections to pegylated interferon (PEG-IFN) therapy. MATERIALS AND METHODS A total of 101 CHD patients were -selected, 80 of whom (46 males ; median age 41 years) satisfied the inclusion criteria and were enrolled in the study. Thirty-seven patients were treated with peg-IFNα for at least 12 months and were followed for a median of 18 months (range, 12-30 months). The primary treatment endpoint was the suppression of HDV replication, as documented by the loss of detectable HDV RNA in serum. Genotyping was used to analyse the IL28B polymorphisms rs12979860 and rs8099917 according to the virological response. RESULTS After treatment, a sustained viral response (SVR) was achieved in 19 (51%) of the patients treated with PEG-INF. The IL28B genotypes in the 80 patients were as follows : CC in 36 (45%), CT in 33 (41%) and TT in 11 (14%) for rs12979860, and GG in 4 (5%), GT in 27 (34%) and TT in 49 (61%) for rs8099917. SVR was achieved in 5 (26%), 10 (53%) and 4 (21%) patients with CC, CT and TT at rs12979860, respectively, and one (5%), nine (47%) and nine (47%) patients with GG, GT and TT at rs8099917, respectively. There were differences in the SVR among genotypes (rs12979860 and rs8099917 ; chi-squared test, p = 0.047). CONCLUSION IL28B predicts the PEG-IFN response in patients with CHD infection.
Collapse
|
33
|
Yesildaglar N, Yıldırım GY, Yıldırım OY, Attar R, Ozkan F, Akkaya H, Yilmaz B. The effects of melatonin on endometriotic lesions induced by implanting human endometriotic cells in the first SCID-mouse endometriosis-model developed in Turkey. CLIN EXP OBSTET GYN 2016. [DOI: 10.12891/ceog2035.2016] [Citation(s) in RCA: 4] [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: 11/01/2022]
|
34
|
Yesildaglar N, Yildirim G, Yildirim OK, Attar R, Ozkan F, Akkaya H, Yilmaz B. The effects of melatonin on endometriotic lesions induced by implanting human endometriotic cells in the first SCID-mouse endometriosis-model developed in Turkey. CLIN EXP OBSTET GYN 2016; 43:25-30. [PMID: 27048013] [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: 06/05/2023]
Abstract
OBJECTIVE To evaluate the effects of melatonin on endometriotic lesions induced by implanting human endometriotic cells in SCID mice. MATERIALS AND METHODS Prospective, randomized, controlled, experimental study. Experimental Research Center of Yeditepe University (YUDETAM). Thirty female, non-pregnant, nulligravid severe combined immunodeficient (SCID) mice. Endometriotic cells collected from patients with endometriosis were implanted subcutaneously in 30 SCID mice. These mice were randomized into two study groups: in the first group, mice were administered melatonin (20 mg/kg/day) following induction of endometriosis for four weeks; in the second group, nothing was administered. All the mice were given a high dose of exogenous estradiol (50 µg/kg/d, twice weekly). Four weeks after inoculation, necropsies were performed and endometriotic lesions were collected. All the lesions were evaluated histopathologically and the levels of SOD and MDA were assessed in the lesions. RESULTS Successful implantation was observed in the 28 mice that survived. Mean MDA level was 5.0 ± 1.7 and 8.8 ± 2.6 in the melatonin and control groups, respectively (p = 0.01); mean SOD level was 1.1 ± 0.1 and 1.0 ± 0.1 in the melatonin and control groups, respectively (p = 0.49). Mean histopathological score was lower in the melatonin group (p = 0.04). CONCLUSIONS Melatonin was effective in the treatment of experimental endometriosis induced in SCID mice.
Collapse
|
35
|
Yilmaz B, Kaban S. Electrochemical Behavior of Atorvastatin at Glassy Carbon Electrode and its Direct Determination in Pharmaceutical Preparations by Square Wave and Differential Pulse Voltammetry. Indian J Pharm Sci 2016. [DOI: 10.4172/pharmaceutical-sciences.1000126] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
|
36
|
Ozbay M, Sengul E, Kinis V, Alabalik U, Yilmaz B, Topcu I. Effects of caffeic acid phenethyl ester on cisplatin ototoxicity. B-ENT 2016; 12:211-218. [PMID: 29727126] [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: 06/08/2023] Open
Abstract
PURPOSE To report histological and electrophysiological data in rats treated with cisplatin and caffeic acid phenethyl ester. METHODS We randomly divided 28 Wistar rats into four groups of seven, to be treated as follows: control (saline), cisplatin, CAPE and cisplatin-CAPE. Distortion product otoacoustic emission (DPOAE) measurements were performed on day one (before drug administration) and day five under anaesthesia. All animals were killed under general anaesthesia on day five after the DPOAE measurement. The cochleae of each rat were histopathologically and immunohistochemically evaluated. RESULTS The outer hair cells were mostly preserved in the control and CAPE groups. Moderate-to-severe and mild-to-moderate hair cell losses were detected in the cisplatin and cisplatin-CAPE groups, respectively. DPOAE assessments revealed significant deterioration in the cisplatin group (P < 0.05). The difference between the cisplatin and cisplatin-CAPE groups was statistically significant (P < 0.05). CONCLUSION CAPE prevents cisplatin ototoxicity.
Collapse
|
37
|
Yilmaz B, Koklu S, Buyukbayram H, Yalçin K, Korkmaz U, Posul E, Can G, Kurt M. Chronic hepatitis B associated with hepatic steatosis, insulin resistance, necroinflammation and fibrosis. Afr Health Sci 2015; 15:714-8. [PMID: 26957957 DOI: 10.4314/ahs.v15i3.3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The effect of hepatitis B virus (HBV) infection on fatty liver disease is unclear. OBJECTIVES The aim of this study was to investigate the viral and host causes of fatty liver in chronic hepatitis B (CHB) patients. This study included 88 CHB patients of which 17 were not treated. Liver biopsy was performed in each patient. Group 1 included those with hepatic steatosis (n=28) and group 2 those without hepatic steatosis. The groups were compared in terms of age, body mass index (BMI), Homeostasis Model Assessment- Insulin Resistance (HOMA-IR), viral load, biochemical parameters and histological findings. Patients in group 1 were subdivided according to the degree of steatosis as follows: grade 1 (15 patients, 53.6%), grade 2 (6 patients, 21.4%), and grade 3 (7 patients, 25%). RESULTS In group 1 (n=28), mean age, BMI, cholesterol, and HOMA-IR were found to be significantly higher than in group 2 (n=60). There were no significant differences in the positivity of viral load, HbeAg, treatment, fibrosis and other laboratory parameters between the two groups. HOMA-IR was the only independent predictive factor of liver steatosis in patients with CHB in logistic regression analysis. CONCLUSION Hepatic steatosis in CHB patients was associated with host metabolic factors.
Collapse
|
38
|
Eminler AT, Savas AY, Yilmaz B, Akgul M, Uslan MI, Koksal AS, Parlak E. Endoscopic Treatment of Biloma: Bilo-gastric drainage. Acta Gastroenterol Belg 2015; 78:348-349. [PMID: 26448421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
|
39
|
Çiftci A, Yilmaz B, Köklü S, Yüksel O, Özsoy M, Erden G, Öztürk G, Akbal E, Ergül B, Koçak E, Cesur S. Serum levels of nitrate, nitrite and advanced oxidation protein products (AOPP) in patients with nonalcoholic fatty liver disease. Acta Gastroenterol Belg 2015; 78:201-205. [PMID: 26151688] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND Oxidative stress is increased and anti-oxidant defense mechanisms are impaired in patients with hepatosteatosis. The aim of the present study was to evaluate the serum levels of several oxidant and anti-oxidant markers in patients with nonalcoholic fatty liver disease (NAFLD). PATIENTS AND METHODS Thirty-four patients with NAFLD, and 19 healthy controls were included. In this study, we measured serum nitrate and advanced oxidation protein product (AOPP) as the oxidizing products and nitrite as the anti-oxidizing marker. Nitrate and nitrite levels were measured using a calorimetric method, and levels of serum AOPP were measured by a spectrophotometric method using a commercial ELISA kit. RESULTS Serum nitrate and AOPP levels were significantly higher in the NAFLD group compared to the control group. Serum nitrite and N-N levels were similar between the two groups. Serum nitrate and N-N levels were found to be significantly higher in patients with elevated ALT levels compared to patients with normal ALT levels. Serum nitrite and AOPP levels were comparable between these groups. Mean platelet volume (MPV) was significantly lower in the NAFLD group compared to the control group. CONCLUSIONS Serum levels of oxidizing agents including nitrate and AOPP increase in patients with NAFLD. In contrast, serum nitrite, an antioxidant agent, does not adequately increase to compensate for the oxidizing effects in these patients.
Collapse
|
40
|
Duran İ, Ural Ç, Yilmaz B, Tatar N. Effects of Er:YAG Laser Pretreatment with Different Energy Levels on Bond Strength of Repairing Composite Materials. Photomed Laser Surg 2015; 33:320-5. [DOI: 10.1089/pho.2014.3859] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- İbrahim Duran
- Department of Prosthodontics, Faculty of Dentistry, University of Ondokuz Mayis, Turkey-Samsun
| | - Çağrı Ural
- Department of Prosthodontics, Faculty of Dentistry, University of Ondokuz Mayis, Turkey-Samsun
| | - Betül Yilmaz
- Department of Prosthodontics, Faculty of Dentistry, University of Ondokuz Mayis, Turkey-Samsun
| | - Numan Tatar
- Department of Prosthodontics, Faculty of Dentistry, University of Ondokuz Mayis, Turkey-Samsun
| |
Collapse
|
41
|
Keskin FE, Ozyazar M, Pala AS, Elmali AD, Yilmaz B, Uygunoglu U, Bozluolcay M, Tuten A, Bingöl A, Hatipoglu E. Evaluation of cognitive functions in gestational diabetes mellitus. Exp Clin Endocrinol Diabetes 2015; 123:246-51. [PMID: 25868060 DOI: 10.1055/s-0034-1395634] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To evaluate the association between cognitive functions and metabolic status in cases with gestational diabetes mellitus (GDM). METHODS In this study 44 patients with GDM and 45 normal pregnant were included. Depression was evaluated with Beck's depression inventory (BDI). Cognitive functions were evaluated with Montreal cognitive assessment (MOCA), paced auditory serial addition test (PASAT), spatial recall test (SRT), symbol digit modalities (SDMT), and word list generation (WLG). RESULTS The mean gestational age, educational level and account of previous birth of the subjects in the study were not statistically different between the groups. The mean scores of BDI of the 2 groups were not statistically different. MOCA score and SDMT was significantly decreased in GDM in comparison to NP (p=0.005, p=0.04 respectively). Also, SDMT score was inversely correlated with number of pregnancies, postprandial blood glucose and HbA1c.The scores of PASAT, SRT, SPART and WLG were statistically similar between the groups. CONCLUSIONS Our findings may be a clue for early onset of impairment in cognitive functions in cases with new onset diabetes during pregnancy.
Collapse
Affiliation(s)
- F E Keskin
- Division of Endocrinology-Metabolism and Diabetes, Department of Internal Medicine, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
| | - M Ozyazar
- Division of Endocrinology-Metabolism and Diabetes, Department of Internal Medicine, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
| | - A S Pala
- Division of Endocrinology-Metabolism and Diabetes, Department of Internal Medicine, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
| | - A D Elmali
- Department of Neurology, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
| | - B Yilmaz
- Department of Neurology, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
| | - U Uygunoglu
- Department of Neurology, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
| | - M Bozluolcay
- Department of Neurology, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
| | - A Tuten
- Department of Gynecology and Obstetrics, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
| | - A Bingöl
- Mayis Psychology Center, Istanbul, Turkey
| | - E Hatipoglu
- Division of Endocrinology-Metabolism and Diabetes, Department of Internal Medicine, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
| |
Collapse
|
42
|
Yilmaz B, Dayanan R. Letter: reversibility of hepatic fibrosis and immunosuppression withdrawal in patients with autoimmune hepatitis/primary biliary cirrhosis overlap syndrome. Aliment Pharmacol Ther 2015; 41:794. [PMID: 25781049 DOI: 10.1111/apt.13123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Affiliation(s)
- B Yilmaz
- Department of Gastroenterology, Bolu Izzet Baysal Education and Research Hospital, Bolu, Turkey.
| | | |
Collapse
|
43
|
Sari F, Sarikaya AM, Suren D, Eren M, Yilmaz B. Bardet-Biedl syndrome with vulva carcinoma presented with acute renal failure: a case report. Hippokratia 2015; 19:176-178. [PMID: 27418769 PMCID: PMC4938111] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Bardet-Biedl syndrome is a rare disorder characterized by retinal dystrophy, obesity, kidney dysfunction, polydactyly, hypogonadism and cognitive impairment. It can be accompanied by systemic findings such as malignancy, hypertension, diabetes mellitus, constitutional and functional disorders of urogenital system and liver fibrosis. CASE REPORT A 35-year-old woman with Bardet-Biedl syndrome was referred to our outpatient nephrology clinic with dysuria, acute renal failure, and urinary tract infection. A sized 2 x 1 cm mass between labia major and minor was noted, while CT scan showed a lesion that encompassed uterus and extended to the posterior side of the bladder in the left adnexal region and a 3 cm lesion in the liver. Excisional biopsy of the mass revealed a well-differentiated, squamous cell carcinoma. Dysuria resolved with insertion of urinary catheter after bougie dilatation and the patient was referred for radiotherapy. CONCLUSION It should be kept in the mind that renal failure may develop due to constitutional urogenital anomalies such as vulva carcinoma. This can be an important cause of morbidity and mortality in patients with Bardet-Biedl syndrome.Hippokratia 2015; 19 (2):176-178.
Collapse
Affiliation(s)
- F Sari
- Nephrology Department, Education and Research Hospital, Antalya, Turkey
| | - A M Sarikaya
- Nephrology Department, Education and Research Hospital, Antalya, Turkey
| | - D Suren
- Pathology Department, Education and Research Hospital, Antalya, Turkey
| | - M Eren
- Nephrology Department, Education and Research Hospital, Antalya, Turkey
| | - B Yilmaz
- Nephrology Department, Education and Research Hospital, Antalya, Turkey
| |
Collapse
|
44
|
Aydogmus S, Kelekci S, Aydogmus H, Demir M, Yilmaz B, Sutcu R. Association of antepartum vitamin D levels with postpartum pelvic floor muscle strength and symptoms. Int Urogynecol J 2015; 26:1179-84. [PMID: 25792352 DOI: 10.1007/s00192-015-2671-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Accepted: 02/24/2015] [Indexed: 10/23/2022]
Abstract
INTRODUCTION AND HYPOTHESIS Vitamin D affects skeletal muscle strength and functions via various mechanisms. Strength and/or functional dysfunctions of the pelvic floor muscles may be associated with the distortion of pelvic floor functions. We hypothesized that vitamin D deficiency may contribute to pelvic floor dysfunction (PFD) by affecting pelvic floor muscle strength (PFMS). The aim of this study was to assess the effect of vitamin D deficiency during pregnancy on postpartum PFMS. METHODS This cross-sectional study was conducted in a university hospital. One hundred and eighty pregnant women were admitted to our hospital in their third trimester and compared with 156 healthy nulliparous women. Venous blood samples for examining vitamin D levels were taken from each participant and stored at -80 °C. At 8-10 weeks postpartum, patients were invited to the hospital, asked about their PFD symptoms, and PFMS was measured using a perineometer. RESULTS There was no statistical significance among groups regarding mean age, maternal age, and weight at delivery. Postpartum PFMS and duration in vitamin D-deficient women were significantly lower than those without the deficiency. Vitamin D-deficient vaginal delivery cases (group I) had a postpartum PFMS average of 21.96 ± 7.91 cm-H₂O, nonvitamin D-deficient normal delivery cases (group III) had a PFMS of 29.66 ± 10.3 cm-H₂O (p = 0.001). In the cesarean delivery groups, vitamin D-deficient (group II) and nonvitamin D-deficient (group IV) cases had PFMS values of 32.23 ± 9.66 and 35.53 ± 15.58 cm-H₂O respectively (p = 0.258). CONCLUSIONS Lower vitamin D levels in the third trimester correlates with decreased PFMS.
Collapse
Affiliation(s)
- S Aydogmus
- Department of Gynaecology and Obstetrics, İzmir Katip Çelebi University School of Medicine, İzmir, Turkey,
| | | | | | | | | | | |
Collapse
|
45
|
Battal M, Kartal A, Citgez B, Yilmaz B, Akcakaya A, Karatepe O. Impact of allyl disulfide on oxidative damage and liver regeneration in an experimental hepatectomy model. Chirurgia (Bucur) 2015; 110:117-122. [PMID: 26011832] [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] [Accepted: 04/01/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND We investigated the effects of allyl disulfide (agarlic extract) on tissue damage, regeneration, proliferation and oxidative damage in an experimental liver resection model. MATERIALS AND METHODS In the study, 24 female Wistar albinorats weighing approximately 200-250 g were used. Group 1:The rats in the experimental group all received a 70%hepatectomy and were fed an Allyl disulfide (30 μg kg day,Allyl disulfide, Sigma-Aldrich, formula: C6H10S2, CASNumber: 2179-57-9, formula weight: 146.27 g mol) in supplement to a regular diet for 1 week both preoperatively and postoperatively. Group 2: The rats in the control group also underwent a 70% hepatectomy and were given regular food and water for 1 week both preop and postop. Group 3: In the sham group, all rats were sacrificed 7 days after surgery. Forbiochemical evaluation, SGOT, SGPT, bilirubin, CRP and MDA were studied. In a histopathological examination, the fattening of the liver tissue, existence of (macro-micro vesicular),fibrosis, pleomorphism at hepatocyte nuclei, portal inflammation, existence of intralobular inflammatory cells,dilation at sinusoids, congestion, congestion at the central vein, regeneration, existence of Kupffer cells in the sinu soidallumen and ki-67 proliferation index at hepatocytes were examined. RESULTS A significant difference between group 1 and group2 was observed regarding the existence of regeneration,(p:0.06), the occurrence of nuclear pleomorphisms (p:0,001)and the fibroblast activity status (p:0.001). Significant differences were found between the experimental groups in regard to Kupffer cell increase and dilation and the hyperemiastatus in the sinusoid lumens (p:0.013 and p:0.001,respectively). In the Allyl disulfide group, the proliferation index was significantly higher than that of the other groups(p:0,001), while the average plasma MDA value was lower than that of the other groups (p: 0,042). No significant differences were found among the groups with respect to tissue MDA values (p:0,720). No significant difference was found for SGPT (ALT) and SGOT (AST) levels between Group 1 and the other groups (p:0.247 and p:0.539, respectively).The average total bilirubin (T. Bili) values were 0,12,0,08 and 0,04 in the allyl disulfide group, control group andSham group, respectively. This difference among the groups is statistically significant (p:0.001). The average direct bilirubin (D. Bili) values were 0,06, 0,02 and 0,02 in the allyl disulfide group, control group and Sham group, respectively.This variation among the groups is also statistically significant (0.001). CONCLUSION We observed that the use of Allyl disulfide supplementation after major hepatectomy has a positive impact on liver regeneration, proliferation and oxidative damage. ABBREVIATIONS Postop: post-operative, Preop: pre-operative,SGOT(AST): serum glutamic oxaloacetic transaminase,SGPT(ALT): serum glutamate-pyruvate transaminase, CRP:C- Reactive protein, MDA: Malondialdehyde, DAS: Garlicextract diallyl sulfide, AGE: aged garlic extract.
Collapse
|
46
|
Duran I, Yilmaz B, Tatar N, Ural C, Güler AU. Determining the localization of premolar zenith positions according to the gingival line. Niger J Clin Pract 2015; 18:273-5. [PMID: 25666006 DOI: 10.4103/1119-3077.151066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND The gingival zenith (GZ) positions according to a reference line in the premolar (PM) area remain concern, especially for the clinicians in placing the gingival contours during surgery. OBJECTIVES The objectives of this study are to determine the maxillary PM GZ positions according to GZ line (GZL). MATERIALS AND METHODS A sample population of 63 patients with healthy gingival tissue was studied. The GZ was determined at the most apical point of the gingival marginal scallop. A horizontal-zenith line (ZL) was drawn connecting the GZ from the ipsilateral canine (C) and central incisor teeth. Reference lines were drawn, and bilateral measurements were taken in the respective stone casts in the PM area. RESULTS No statistically significant differences were found between bilateral first premolars (FPM) and second premolars (SPM). When considering ipsilateral FPM and SPM, statistically significant differences were found between them. For all PM teeth, the mean distance value of GZ to GZL was approximately 1.32 mm. CONCLUSIONS The present study results showed that GZs of FPM and SPM teeth for both left and right sight was coronally located according to ZL.
Collapse
Affiliation(s)
| | | | | | - C Ural
- Department of Prosthodontics, Ondokuz Mayis University, Faculty of Dentistry, Atakum, Samsun, Turkey
| | | |
Collapse
|
47
|
Akpinar YZ, Yilmaz B, Tatar N, Demirtag Z. Changing the bonding force of impression tray to edentulous maxillary jaw simulator with impression valve system: in vitro study. Niger J Clin Pract 2015; 18:115-119. [PMID: 25511355 DOI: 10.4103/1119-3077.146992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the effect of an impression valve system (IVS) on the bonding force between an impression tray and an edentulous maxillary jaw. MATERIALS AND METHODS In this in vitro study, a polyether-coated maxillary jaw simulator (PM) was used to model an edentulous maxillary jaw. The IVS was placed into individual impression trays. An irreversible hydrocolloid impression was taken of the PM when the IVS was open and closed. The impression tray bonding force was measured using a digital dynamometer. Student's t-test was used to determine the significance of the difference between these two groups. RESULTS The impression tray was more easily separated from the PM when the IVS was open (108 ± 3.9 N). The separation was more difficult when the IVS was closed (153.7 ± 14.2 N). The difference between these two findings (P = 0.000) was significant. CONCLUSION The use of an IVS facilitates the removal of the impression tray from the mouth when taking impressions from an edentulous maxillary jaw.
Collapse
Affiliation(s)
- Y Z Akpinar
- Department of Prosthodontics, Faculty of Dentistry, University of Abant Izzet Baysal, Bolu, Turkey
| | | | | | | |
Collapse
|
48
|
Yilmaz B, Kaban S, Akcay BK. Anodic oxidation of etodolac and its linear sweep, square wave and differential pulse voltammetric determination in pharmaceuticals. Indian J Pharm Sci 2015; 77:413-21. [PMID: 26664057 PMCID: PMC4649775 DOI: 10.4103/0250-474x.164777] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
In this study, simple, fast and reliable cyclic voltammetry, linear sweep voltammetry, square wave voltammetry and differential pulse voltammetry methods were developed and validated for determination of etodolac in pharmaceutical preparations. The proposed methods were based on electrochemical oxidation of etodolac at platinum electrode in acetonitrile solution containing 0.1 M lithium perchlorate. The well-defined oxidation peak was observed at 1.03 V. The calibration curves were linear for etodolac at the concentration range of 2.5-50 μg/ml for linear sweep, square wave and differential pulse voltammetry methods, respectively. Intra- and inter-day precision values for etodolac were less than 4.69, and accuracy (relative error) was better than 2.00%. The mean recovery of etodolac was 100.6% for pharmaceutical preparations. No interference was found from three tablet excipients at the selected assay conditions. Developed methods in this study are accurate, precise and can be easily applied to Etol, Tadolak and Etodin tablets as pharmaceutical preparation.
Collapse
|
49
|
Seker F, Kilic U, Caglayan B, Ethemoglu M, Caglayan A, Ekimci N, Demirci S, Dogan A, Oztezcan S, Sahin F, Yilmaz B, Kilic E. HMG-CoA reductase inhibitor rosuvastatin improves abnormal brain electrical activity via mechanisms involving eNOS. Neuroscience 2015; 284:349-359. [DOI: 10.1016/j.neuroscience.2014.10.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 09/28/2014] [Accepted: 10/07/2014] [Indexed: 01/12/2023]
|
50
|
Pabuccu R, Pabuccu E, Caglar G, Yilmaz B, Yarci A. The cycle outcomes of GnRH agonist triggering with different leuprolide acetate doses in high responder patients. Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.1124] [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: 12/01/2022]
|