1
|
Özdede M, Taban H, Akman O, Önder S, Kılıçkap S. The Prognostic Significance of KIAA1522 Expression in Non-Small-Cell Lung Cancer Patients. Cureus 2023; 15:e44016. [PMID: 37746394 PMCID: PMC10517341 DOI: 10.7759/cureus.44016] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/23/2023] [Indexed: 09/26/2023] Open
Abstract
The majority of lung cancers belong to the non-small-cell lung cancer (NSCLC) category, which is linked to a high mortality rate despite significant progress in diagnosis and treatment. Therefore, there is a need for novel prognostic NSCLC biomarkers to improve prognosis which currently remains poor. Recent studies and analyses of gene expression data of NSCLC revealed that high expression of KIAA1522 was significantly associated with poor prognosis and decreased overall survival. We identified 98 patients who underwent radical curative surgical resections or metastasectomy for pulmonary adenocarcinoma and squamous cell carcinoma at our institution or the pathological diagnosis confirmed by our pathologists. Following the latest data, we utilized immunohistochemistry to assess the expression of KIAA1522 and investigated its association with various clinic-demographic parameters, pathological stages, recurrence rates, overall survival, and disease-free survival in patients who achieved complete remission. Notably, there were no significant differences in the expression profiles of KIAA1522 between adenocarcinoma and squamous cell carcinoma samples (p=0.6). Survival analysis was conducted using log-rank tests and a multivariate Cox proportional hazard model. Of the 98 samples, 54 (55.1%) exhibited high expression of KIAA1522, and patients with high KIAA1522 expression had a significantly shorter overall survival than the low-expression group (p=0.01). Multivariate Cox proportional hazard models in which metastatic patients were included revealed that along with older age, higher TNM stage (tumor, node, metastasis system), and Eastern Cooperative Oncology Group (ECOG) performance status, high expression of KIAA1522 served as an independent prognostic factor. A high expression profile was not significantly associated with relapses in those whose complete remission had been achieved. Still, those patients with high expression of KIAA1522 tended to exhibit a shorter disease-free survival rate. In conclusion, our findings suggest that KIAA1522 expression is an independent factor for predicting overall survival and may serve as a valuable prognostic indicator for relapse and disease-free survival in NSCLC patients.
Collapse
Affiliation(s)
- Murat Özdede
- Internal Medicine, Hacettepe University Faculty of Medicine, Ankara, TUR
| | - Hakan Taban
- Medical Oncology, Hacettepe University Faculty of Medicine, Ankara, TUR
| | - Orkun Akman
- Pathology, Hacettepe University Faculty of Medicine, Ankara, TUR
| | - Sevgen Önder
- Pathology, Hacettepe University Faculty of Medicine, Ankara, TUR
| | | |
Collapse
|
2
|
Akman O, Gregor JC, Singh H. A109 PATIENTS’ DESCRIPTIONS OF THEIR LAST BOWEL MOVEMENT BEFORE COLONOSCOPY CORRELATES STRONGLY WITH THEIR BOSTON BOWEL PREPARATION SCALE (BBPS) SCORE WHEN ASSESSED USING A STANDARDIZED METHOD. J Can Assoc Gastroenterol 2022. [PMCID: PMC8859254 DOI: 10.1093/jcag/gwab049.108] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background Predicting bowel prep quality prior to colonoscopy may help improve colonoscopy prep quality by instituting adjunct measures before colonoscopy. This will in turn reduce repeat procedures, complications, and costs. Aims We determined the utility of a standardized method to obtain information from patients on the characteristics of their last bowel movement before colonoscopy by correlating the obtained information to BBPS. We compared this approach to informal/usual descriptions attained by nurses. Methods This is a cross-sectional study with data collected at two tertiary care hospitals. On the day of their colonoscopy, outpatients were asked by an assistant to describe their last bowel movement using a standardized method. The same patients had previously been asked by endoscopy nurses to describe their last bowel movement; the assistant was blind to previous descriptions. Descriptions were assigned a score (Table 1). Following colonoscopy, total and segmental BBPS scores were recorded by the gastroenterologist performing the procedure; the gastroenterologist was blind to the descriptions. Bivariate Pearson’s Correlation was used to separately assess the correlation between descriptions and BBPS. Cohen’s Kappa was used to assess agreement between the two descriptions. Results 121 patients (ages 17–86; 55% Female) with 11% BBPS< 6 were included. For descriptions attained by the assistant, there was a strong correlation with total BBPS score (r = 0.738; p < 0.001); correlation to segmental BBPS was moderate-to-strong (r=0.70, 0.63 and 0.67 right, transverse and left colon respectively). For descriptions attained by endoscopy nurses, there was a moderate correlation with total BBPS score (r = 0.525; p < 0.001); correlation to segmental BBPS was weak-to-moderate (r=0.52, 0.49 and 0.44 right, transverse and left colon respectively). There was weak agreement (K = 0.525) between description attained by assistant and nurses. Conclusions When asked using a standardized method, a patient’s description of their last bowel movement correlates strongly with their total and segmental BBPS score; the correlation is weaker for non-standardized descriptions attained by endoscopy nurses. A standardized questionnaire, including assessing consistency, is valuable in assessing the bowel movement before colonoscopy. Funding Agencies None
Collapse
Affiliation(s)
- O Akman
- 1. Gastroenterology, University of Manitoba, Winnipeg, MB, Canada
| | - J C Gregor
- 2. London Health Sciences Centre, London, ON, Canada
| | - H Singh
- 3. University of Manitoba, Winnipeg, MB, Canada
| |
Collapse
|
3
|
Simsek C, Uner M, Ozkara F, Akman O, Akyol A, Kav T, Sokmensuer C, Gedikoglu G. Comprehensive clinicopathologic characteristics of intraabdominal neurogenic tumors: Single institution experience. World J Clin Cases 2021; 9:2218-2227. [PMID: 33869597 PMCID: PMC8026837 DOI: 10.12998/wjcc.v9.i10.2218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/12/2021] [Accepted: 02/11/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Neurogenic tumors are rare but represent an important consideration in the differential diagnosis of abdominal mesenchymal tumors. Reports on their incidence, pathological features and clinical characteristics are scarce.
AIM To advance the overall knowledge on the histologic, immunohistochemical, clinical and radiologic characteristics of neurogenic tumors through this case series.
METHODS An established database of a nationwide tertiary referral center, covering a 15-year period (2005 and 2020), was retrospectively re-evaluated. Diagnoses of neurogenic tumor cases were confirmed by two experts following review of the macroscopic, histological and immunohistochemical records along with findings from analysis of archived tissue sections for each included patient. Tissue microarrays were constructed for cases lacking necessary immunohistochemical studies. Clinical data and follow-up information were collected from the hospital records and the patients themselves, when available.
RESULTS The study included 19 cases of intraabdominal neurogenic tumors, representing 12 women and 7 men, between 18 and 86 years of age (median: 51 years). Final confirmed diagnoses were 12 schwannomas, 2 diffuse submucosal neuro-fibromatoses, 2 ganglioneuromas, 2 malignant peripheral sheath nerve tumors, and 1 mucosal Schwann cell hamartoma. Sizes of the tumors were variable, with a median diameter of 4 cm; the two largest (> 10 cm) were schwannomas. The majority of cases were asymptomatic at presentation, but the most frequent symptom was abdominal pain. Gastrointestinal tract lesions were detected with endoscopy and extra-luminal lesions were detected with cross-sectional imaging. All cases were S100-positive and CD117-negative; most cases were negative for desmin, epithelial membrane antigen, smooth muscle actin and CD34. In all but 5 cases, the Ki67 proliferation index was ≤ 1%.
CONCLUSION Re-evaluation of 19 cases of abdominal neurogenic tumors demonstrated con-siderable variability in clinicopathologic characteristics depending on location, dimension and histological features.
Collapse
Affiliation(s)
- Cem Simsek
- Department of Gastroenterology, Hacettepe University, Ankara 06230, Turkey
| | - Meral Uner
- Department of Pathology, Hacettepe University, Ankara 06230, Turkey
| | - Feride Ozkara
- Department of Internal Medicine, Hacettepe University, Ankara 06230, Turkey
| | - Orkun Akman
- Department of Pathology, Yozgat City Hospital, Yozgat 66100, Turkey
| | - Aytekin Akyol
- Department of Pathology, Hacettepe University, Ankara 06230, Turkey
| | - Taylan Kav
- Department of Gastroenterology, Hacettepe University, Ankara 06230, Turkey
| | - Cenk Sokmensuer
- Department of Pathology, Hacettepe University, Ankara 06230, Turkey
| | - Gokhan Gedikoglu
- Department of Pathology, Hacettepe University, Ankara 06230, Turkey
| |
Collapse
|
4
|
Akman O, Duerksen D. A68 DISTAL MIGRATION OF A PERCUTANEOUS GASTROJEJUNAL DUODOPA INFUSION TUBE DUE TO BEZOAR FORMATION AT THE JEJUNAL TUBE TIP. J Can Assoc Gastroenterol 2021. [DOI: 10.1093/jcag/gwab002.066] [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: 11/13/2022] Open
Abstract
Abstract
Background
Continuous intestinal infusion of levodopa/carbidopa intestinal gel (LCIG) for the treatment of advanced Parkinson’s Disease (PD) leads to less variability in plasma drug levels and improved symptom control. Percutaneous Gastrojejunostomy (PEG-J) tube placement has a high placement success rate; however, delayed tube malfunctions occur in approximately 58% of cases within two years. A rare complication is bezoar formation at the jejunal tube tip.
Aims
To present a case of bezoar formation at the jejunal tip of a PEG-J tube that caused distal migration of the tube with gastroduodenal ulceration and required surgical extraction.
Methods
Full chart review was conducted including clinical notes, laboratory results, radiographic imaging, endoscopy reports, and surgical reports. A relevant literature review was conducted.
Results
A 57-year-old male with severe PD underwent endoscopic guided PEG-J tube insertion for continuous infusion of LCIG; intestinal administration was effective for symptom control. Two years later, he noted that the gastric tube had retracted approximately 15 cm into the stoma without external manipulation of the apparatus. Attempts to externally pull the tube back into position were unsuccessful.
The patient underwent Gastroscopy (EGD) with fluoroscopy. Contrast was used to confirm placement of the jejunal tip within the jejunum, but also showed migration of the gastric tip into the duodenum. A gastroscope was used to reposition the gastric tube in the stomach; the jejunal tube was visualized to be under traction. The bumper on the apparatus was re-positioned and external tape was used to further secure the apparatus and prevent migration.
A month later the tube had migrated again; repeat EGD showed the jejunal tube to be under traction with some resultant ulceration of the pyloric channel and duodenal bulb where the tube had been pressing against the mucosa. The jejunal tube could not be pulled back and appeared to be fixed distally. A CT scan was obtained to assess for complications and a coiled tip was seen in the proximal jejunum.
Surgical extraction of the malfunctioning tube was required. At laparotomy, the coiled tip of the feeding tube was successfully removed via enterotomy. The tube tip had coiled around itself and was encased with food materials, creating a large bezoar that was being pulled distally by peristalsis. The patient subsequently underwent insertion of a new GJ tube for ongoing administration of LCIG and has been doing well since.
Conclusions
Bezoar formation at the jejunal tip of LCIG PEG-J tubes is a rare complication and can lead to distal migration and traction related gastroduodenal ulceration. Surgical removal may be required.
Funding Agencies
None
Collapse
Affiliation(s)
- O Akman
- Gastroenterology, University of Manitoba, Winnipeg, MB, Canada
| | - D Duerksen
- Gastroenterology, University of Manitoba, Winnipeg, MB, Canada
| |
Collapse
|
5
|
Jaiteh MB, Çalık Başaran N, Özışık L, Akman O, Hasanlı N, Tortop S, Özmen Çapın BB, Hüseyinova S, Üner A, İnkaya AÇ. Visceral Leishmaniasis in A Patient Presenting with Fever of Unknown Origin: A Case Report From a Low-endemic Region of Turkey. Turkiye Parazitol Derg 2020; 43:210-212. [PMID: 31865658 DOI: 10.4274/tpd.galenos.2019.6362] [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: 12/01/2022]
Abstract
Leishmaniasis is a neglected disease that is prevalent in tropical and subtropical regions of the world. Even though cutaneous leishmaniasis is the most common form, visceral leishmaniasis is associated with high mortality. The case presented herein is a 39 year-old bed-ridden female who presented with fever of unknown origin, tachypnea and pancytopenia. She was initially misdiagnosed as having autoimmune pancytopenia elsewhere and treated with corticosteroids and intravenous immunoglobulin. She had also received wide-spectrum antibiotics for febrile neutropenia. We performed a leishmania rK39 dipstick test which turned out to be positive along with visualisation of amastigote forms of leishmania on bone marrow biopsy. Thus, we made a diagnosis of visceral leishmaniasis and treated her with liposomal amphotericin B. Her clinical course was complicated by respiratory failure necessitating invasive mechanical ventilation. She responded well to treatment and was later extubated, shortly before being discharged. At 6 months of follow-up, no sign of recurrence was observed.
Collapse
Affiliation(s)
- Muhammed B. Jaiteh
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Ankara, Turkey
| | - Nursel Çalık Başaran
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Ankara, Turkey
| | - Lale Özışık
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Ankara, Turkey
| | - Orkun Akman
- Hacettepe University Faculty of Medicine, Department of Pathology, Ankara, Turkey
| | - Nasib Hasanlı
- Hacettepe Univesity Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - Sema Tortop
- Hacettepe University Faculty of Medicine, Department of Microbiology, Ankara, Turkey
| | | | - Sabine Hüseyinova
- Hacettepe University Faculty of Medicine, Department of Internal Medicine, Ankara, Turkey
| | - Ayşegül Üner
- Hacettepe University Faculty of Medicine, Department of Pathology, Ankara, Turkey
| | - Ahmet Çağkan İnkaya
- Hacettepe Univesity Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| |
Collapse
|
6
|
Papadopoulos I, Zorba A, Koulouglioti C, Ali S, Aagard M, Akman O, Alpers LM, Apostolara P, Biles J, Martín-García Á, González-Gil T, Kouta C, Krepinska R, Kumar BN, Lesińska-Sawicka M, Lopez L, Malliarou M, Nagórska M, Nissim S, Nortvedt L, Oter-Quintana C, Ozturk C, Pangilinan SB, Papp K, Eldar Regev O, Rubiano FO, Tolentino Diaz MY, Tóthová V, Vasiliou M. International study on nurses' views and experiences of compassion. Int Nurs Rev 2018; 63:395-405. [PMID: 27557745 DOI: 10.1111/inr.12298] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 12/01/2022]
Abstract
BACKGROUND Compassion is considered the cornerstone of nursing practice. However, the recent failures in delivering high-quality compassionate nursing care in the UK's National Health Service have brought the topic of compassion to the attention of the public, service providers, policy makers and academics. AIM The aim of this study was to explore the nurses' views and experiences of a number of compassion-related issues in nursing and describe similarities and differences at an international level as well as from the different nursing roles of the participating nurses. METHODS An exploratory, cross-sectional descriptive study, using the International Online Compassion Questionnaire. A total of 1323 nurses from 15 countries completed the questionnaire. RESULTS The majority of participants (59.5%) defined compassion as "Deep awareness of the suffering of others and wish to alleviate it" but definitions of compassion varied by country. Of participants, 69.6% thought compassion was very important in nursing and more than half (59.6%) of them argued that compassion could be taught. However, only 26.8% reported that the correct amount and level of teaching is provided. The majority of the participants (82.6%) stated that their patients prefer knowledgeable nurses with good interpersonal skills. Only 4.3% noted that they are receiving compassion from their managers. A significant relationship was found between nurses' experiences of compassion and their views about teaching of compassion. CONCLUSION Our study is unique in identifying the views and experiences of nurses from 15 different countries worldwide. The findings reveal that compassion is neither addressed adequately in nursing education nor supported in the practice environment by managers. LIMITATIONS Self-report bias was inherent to our survey study design. Furthermore, the individual cultural differences and similarities in the findings are difficult to extrapolate owing to the fact that our analysis was at country level, as well as at the level of the participating nurses. IMPLICATIONS FOR NURSING POLICY Understanding the influence of culture on nurses' views about compassion is critical in the current multicultural healthcare environment and merits further research. This will potentially drive changes in nursing education (ensuring that compassion is taught to nurses) and in the way healthcare leaders and managers foster a compassionate culture within their organizations (e.g. by leading by example and compassionate to their staff).
Collapse
Affiliation(s)
- I Papadopoulos
- Research Centre for Transcultural Studies in Health, Middlesex University, London, UK
| | - A Zorba
- Middlesex University, London, UK
| | - C Koulouglioti
- Research and Innovation Department, Western Sussex Hospitals NHS Foundation Trust, Worthing, UK
| | - S Ali
- Research Centre for Transcultural Studies in Health, Middlesex University, London, UK
| | - M Aagard
- Walden University, Minneapolis, MN, USA
| | - O Akman
- Istanbul Sabahattin Zaim University, Istanbul, Turkey
| | - L-M Alpers
- Lovisenberg Diaconal Hospital/Oslo and Akershus University College of Applied Sciences, Oslo, Norway
| | - P Apostolara
- National and Kapodistrian Univeristy of Athens, Athens, Greece
| | - J Biles
- Charles Sturt University, Abury, NSW, Australia
| | - Á Martín-García
- Centro de San Blas, Servicio Madrileño de Salud, Madrid, Spain
| | - T González-Gil
- Nursing Section Department, Faculty of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | - C Kouta
- Department of Nursing, Cyprus University of Technology, Limassol, Cyprus
| | - R Krepinska
- School of Nursing, Havlíčkův Brod, Czech Republic
| | - B N Kumar
- Norwegian Centre for Minority Health Research, Oslo University Hospital, Oslo, Norway
| | | | - L Lopez
- Universidad Nacional de Colombia - Bogotá - Facultad de Enfermería., Colombia
| | - M Malliarou
- Technological Institution of Thessaly, Larisa, Greece
| | | | - S Nissim
- Wolfson Academic Nursing School, Tel Aviv University, Tel Aviv, Israel
| | - L Nortvedt
- Oslo and Akershus University College of Applied Sciences, Oslo, Norway
| | - C Oter-Quintana
- Nursing Section Department, Faculty of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | - C Ozturk
- Istanbul Sabahattin Zaim University, Istanbul, Turkey
| | | | - K Papp
- Faculty of Health, University of Debrecen, Debrecen, Hungary
| | - O Eldar Regev
- The Max Stern Yezreel Valley College, Yezreel Valley, Israel
| | - F O Rubiano
- Bataan Peninsula State University, Balanga, Philippines
| | | | - V Tóthová
- Faculty of Health and Social Studies, University of South Bohemia in Ceske Budejovice, Ceske Budejovice, Czech Republic
| | - M Vasiliou
- Department of Nursing, Cyprus University of Technology, Limassol, Cyprus
| |
Collapse
|
7
|
Akman O, Comar T, Harris AL, Hrozencik D, Li Y. Dynamics of gene regulatory networks with stochastic propensities. INT J BIOMATH 2018. [DOI: 10.1142/s1793524518500328] [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] [Indexed: 11/18/2022]
Abstract
Gene regulatory networks (GRNs) control the production of proteins in cells. It is well-known that this process is not deterministic. Numerous studies employed a non-deterministic transition structure to model these networks. However, it is not realistic to expect state-to-state transition probabilities to remain constant throughout an organism’s lifetime. In this work, we focus on modeling GRN state transition (edge) variability using an ever-changing set of propensities. We suspect that the source of this variation is due to internal noise at the molecular level and can be modeled by introducing additional stochasticity into GRN models. We employ a beta distribution, whose parameters are estimated to capture the pattern inherent in edge behavior with minimum error. Additionally, we develop a method for obtaining propensities from a pre-determined network.
Collapse
Affiliation(s)
- O. Akman
- Department of Mathematics, Illinois State University, Normal, IL, USA
| | - T. Comar
- Department of Mathematics, Benedictine University, Lisle, IL, USA
| | - A. L. Harris
- Department of Physics, Illinois State University, Normal, IL, USA
| | - D. Hrozencik
- Department of Mathematics, Chicago State University, Chicago, IL, USA
| | - Y. Li
- Department of Mathematics, Illinois State University, Normal, IL, USA
| |
Collapse
|
8
|
Boyraz G, Basaran D, Salman MC, Ibrahimov A, Onder S, Akman O, Ozgul N, Yuce K. Histological Follow-Up in Patients with Atypical Glandular Cells on Pap Smears. J Cytol 2017; 34:203-207. [PMID: 29118475 PMCID: PMC5655657 DOI: 10.4103/joc.joc_209_16] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Context: Atypical glandular cells (AGCs) result in the Papanicolaou (Pap) smear may be associated with significant genital and nongenital neoplastic processes. Aims: To evaluate the underlying histopathology in women who had AGCs on Pap smears. Settings and Design: Retrospective cross-sectional study. Patients and Methods: Clinicopathological data of patients who had AGC on Pap smears and underwent histological workup between January 2004 and December 2014 were retrieved from the computerized database of a tertiary care center. Patients with a prior history of cervical intraepithelial neoplasia or gynecological cancer were excluded. Statistical Analysis Used: Chi-square test or Fisher's exact tests were used as appropriate. Results: Cytological examination of the uterine cervix was carried out in 117,560 patients. We identified 107 patients (0.09%) with AGC and 80 of those with histological follow-up were included in the study. The median age at diagnosis was 47 years (range, 18–79), and 32 women (40%) were postmenopausal, while 56 (70%) had gynecological symptoms. Significant preinvasive or invasive lesions on pathological examination were detected in 27 (33.8%) patients, including 12 endometrial adenocarcinomas (15%), 8 cervical carcinomas (10%), 3 cervical intraepithelial neoplasia II/III (3.75%), 2 ovarian adenocarcinomas (2.5%), and 2 metastatic tumors (2.5%). Univariate analysis showed that postmenopausal status (P < 0.001), age >50 years old (P < 0.001), having symptoms at the time of admission (P = 0.041), and AGC “favor neoplasia” smear results (P = 0.041) were the clinical factors associated with significant pathological outcome. Conclusions: Patients with AGC on Pap smears should be evaluated vigilantly with histological workup, especially if they are postmenopausal or symptomatic.
Collapse
Affiliation(s)
- Gokhan Boyraz
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Hacettpe University, Faculty of Medicine, Ankara, Turkey
| | - Derman Basaran
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Hacettpe University, Faculty of Medicine, Ankara, Turkey
| | - Mehmet Coskun Salman
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Hacettpe University, Faculty of Medicine, Ankara, Turkey
| | - Akbar Ibrahimov
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Hacettpe University, Faculty of Medicine, Ankara, Turkey
| | - Sevgen Onder
- Department of Pathology, Division of Cytology Hacettpe University, Faculty of Medicine, Ankara, Turkey
| | - Orkun Akman
- Department of Pathology, Division of Cytology Hacettpe University, Faculty of Medicine, Ankara, Turkey
| | - Nejat Ozgul
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Hacettpe University, Faculty of Medicine, Ankara, Turkey
| | - Kunter Yuce
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Hacettpe University, Faculty of Medicine, Ankara, Turkey
| |
Collapse
|
9
|
Aksu EH, Akman O, Ömür AD, Karakuş E, Can İ, Kandemir FM, Dorman E, Uçar Ö. 3,3 diindolylmethane leads to apoptosis, decreases sperm quality, affects blood estradiol 17 β and testosterone, oestrogen (α and β) and androgen receptor levels in the reproductive system in male rats. Andrologia 2016; 48:1155-1165. [DOI: 10.1111/and.12554] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/29/2015] [Indexed: 12/27/2022] Open
Affiliation(s)
- E. H. Aksu
- Faculty of Veterinary Medicine; Department of Reproduction and Artificial Insemination; Atatürk University; Erzurum Turkey
| | - O. Akman
- Faculty of Veterinary Medicine; Department of Reproduction and Artificial Insemination; Atatürk University; Erzurum Turkey
| | - A. D. Ömür
- Faculty of Veterinary Medicine; Department of Reproduction and Artificial Insemination; Atatürk University; Erzurum Turkey
| | - E. Karakuş
- Faculty of Veterinary Medicine; Department of Pharmacology; Atatürk University; Erzurum Turkey
| | - İ. Can
- Faculty of Medicine; Department of Histology; Kafkas University; Kars Turkey
| | - F. M. Kandemir
- Faculty of Veterinary Medicine; Department of Biochemistry; Atatürk University; Erzurum Turkey
| | - E. Dorman
- Faculty of Medicine; Biochemistry Laboratories; Atatürk University; Erzurum Turkey
| | - Ö. Uçar
- Faculty of Veterinary Medicine; Department of Reproduction and Artificial Insemination; Atatürk University; Erzurum Turkey
| |
Collapse
|
10
|
Ucakturk E, Akman O, Sun X, Baydar DE, Dolgun A, Zhang F, Linhardt RJ. Changes in composition and sulfation patterns of glycoaminoglycans in renal cell carcinoma. Glycoconj J 2015; 33:103-12. [PMID: 26662466 DOI: 10.1007/s10719-015-9643-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 11/23/2015] [Accepted: 11/24/2015] [Indexed: 01/08/2023]
Abstract
Glycosaminoglycans (GAGs) are heterogeneous, linear, highly charged, anionic polysaccharides consisting of repeating disaccharides units. GAGs have some biological significance in cancer progression (invasion and metastasis) and cell signaling. In different cancer types, GAGs undergo specific structural changes. In the present study, in depth investigation of changes in sulfation pattern and composition of GAGs, heparan sulfate (HS)/heparin (HP), chondroitin sulfate (CS)/dermatan sulfate and hyaluronan (HA) in normal renal tissue (NRT) and renal cell carcinoma tissue (RCCT) were evaluated. The statistical evaluation showed that alteration of the HS (HSNRT = 415.1 ± 115.3; HSRCCT = 277.5 ± 134.3), and CS (CSNRT = 35.3 ± 12.3; CSRCCT = 166.7 ± 108.8) amounts (in ng/mg dry tissue) were statistically significant (p < 0.05). Sulfation pattern in NRT and RCCT was evaluated to reveal disaccharide profiles. Statistical analyses showed that RCCT samples contain significantly increased amounts (in units of ng/mg dry tissue) of 4SCS (NRT = 25.7 ± 9.4; RCCT = 117.1 ± 73.9), SECS (NRT = 0.7 ± 0.3; RCCT = 4.7 ± 4.5), 6SCS (NRT = 6.1 ± 2.7; RCCT = 39.4 ± 34.7) and significantly decreased amounts (in units of ng/mg dry tissue) of NS6SHS (RCCT = 28.6 ± 6.5, RCCT = 10.2 ± 8.0), NS2SHS (RCCT = 44.2 ± 13.8; RCCT = 27.2 ± 15.0), NSHS (NRT = 68.4 ± 15.8; RCCT = 50.4 ± 21.2), 2S6SHS (NRT = 1.0 ± 0.4; RCCT = 0.4 ± 0.3), and 6SHS (NRT = 60.6 ± 17.5; RCCT = 24.9 ± 12.3). If these changes in GAGs are proven to be specific and sensitive, they may serve as potential biomarkers in RCC. Our findings are likely to help us to show the direction for further investigations to be able to bring different diagnostic and prognostic approaches in renal tumors.
Collapse
Affiliation(s)
- Ebru Ucakturk
- Department of Analytical Chemistry, Faculty of Pharmacy, Hacettepe University, 06100, Sıhhıye, Ankara, Turkey.
| | - Orkun Akman
- Department of Pathology, Hacettepe University School of Medicine, 06100, Sıhhıye, Ankara, Turkey
| | - Xiaojun Sun
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA
- Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA
| | - Dilek Ertoy Baydar
- Department of Pathology, Hacettepe University School of Medicine, 06100, Sıhhıye, Ankara, Turkey
| | - Anil Dolgun
- Department of Biostatistics, Faculty of Medicine, Hacettepe University, 06100, Sıhhıye, Ankara, Turkey
| | - Fuming Zhang
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA
- Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA
| | - Robert J Linhardt
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA.
- Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA.
- Department of Chemical and Biological Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA.
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, NY, 12180, USA.
| |
Collapse
|
11
|
Ayazoğlu TA, Baysal A, Akman O, Özensoy A. Determination of risk factors for acute renal failure after cardiac surgery. Intensive Care Med Exp 2015. [PMCID: PMC4798050 DOI: 10.1186/2197-425x-3-s1-a634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
12
|
Abstract
OBJECTIVE The impact of visual disorders and color vision deficiency on the occupational life has been previously investigated by several studies. In this study, we aimed to evaluate the prevalence of visual disorders among Turkish pathologists and their perceptions on visual disorders. MATERIAL AND METHOD A survey composed of 14 questions about ocular diseases and perceptions to these diseases has been introduced to the volunteering pathologists or pathology residents, participating in the 23rd Congress of Pathology. RESULTS Ninety-three pathologists or pathology residents participated in the survey. Of the participants, 25 (26.9%) were residents, 30 (32.3%) were pathology specialists, and 36 (38.7%) were academicians. The mean duration for working as a pathologist was 15 years. The vast majority (%93.5) of the participants had at least one type of refractive error; the two most common disorders were myopia (77.0%) and astigmatism (64.4%). Sixty-four of the participants (68.8%) claimed an increase in their refractive error after working in the pathology department. Eyeglasses (56/87, 64.4%), contact lenses (14/87, 16.1%), or both (9/87, 10.3%) were used in order to correct the refractive error; however, only 31 of the participants (33.3%) preferred using eyeglasses during microscopy. While 65 participants (69.9%) never had conjunctivitis, 26 participants (28.0%) had at least one conjunctivitis attack. None of the participants claimed to be color blind. CONCLUSION Conjunctivitis and refractive errors are quite prevalent among pathologists. Refractive errors were also found to increase during the pathology practice. Most of the pathologists do not consider visual disorders (mostly refractive errors) as a negative factor during their career decision making, except a color vision defect.
Collapse
Affiliation(s)
- Orkun Akman
- Department of Pathology, Hacettepe University Faculty of Medicine, ANKARA, TURKEY
| | | |
Collapse
|
13
|
Aksoy M, Erdem H, Hatipoğlu F, Lehimcioğlu NC, Akman O, Özkan K. Ultrasonographic Examination of the Scrotal Content in the Rabbit. Reprod Domest Anim 2009; 44:156-60. [DOI: 10.1111/j.1439-0531.2007.01055.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
14
|
Orngreen M, Schelhaas J, Dysgaard Jeppesen T, Akman O, Wevers R, Tvede Andersen S, ter Laak H, van Diggelen O, van Engelen B, Di Mauro S, Vissing J. M.P.4.08 Are oxidative capacity and glycolysis affected in X-linked phosphorylase b kinase deficiency? Neuromuscul Disord 2007. [DOI: 10.1016/j.nmd.2007.06.334] [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: 10/22/2022]
|
15
|
Di Mauro S, Akman O. M.I.1 New frontiers in glycogen storage diseases. Neuromuscul Disord 2007. [DOI: 10.1016/j.nmd.2007.06.015] [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: 11/17/2022]
|
16
|
Alemdar M, Akman O, Selekler HM, Komsuoğlu SS, Ateş N. Does metoprolol inhibit the cortical spreading depression? Acute effects of systematic metropol on CSD in rats. Cephalalgia 2007; 27:1010-3. [PMID: 17681024 DOI: 10.1111/j.1468-2982.2007.01390.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cortical spreading depression (CSD) is supposed to be the underlying biological basis of the migraine aura. Metoprolol was proven to be effective in migraine prophylaxis in clinical trials, but its mechanism of action has not been clarified yet. We studied direct effects of metoprolol on a continuous CSD induction model in rats. Six adult Wistar rats were anaesthetized with intraperitoneal thiopental (50 mg/kg). CSD was induced with application of 1 m KCL through a burr hole into the left frontal dura-mater, and recorded by an Ag/AgCl DC electrode on the left parietal dura-mater. After a basal recording of CSD induction during the first 40-min period, metoprolol (5 mg/kg) was infused within 4 min. Then DC recordings were maintained for a further 120 min. Any significant differences in total number and duration of CSDs before and after metoprolol administration were not detected. This study suggests that the mode of action of metoprolol in prophylaxis is not via direct CSD inhibition.
Collapse
Affiliation(s)
- M Alemdar
- Headache Unit, Department of Neurology, Medical Faculty, Kocaeli University, Kocaeli, Turkey.
| | | | | | | | | |
Collapse
|
17
|
Oktay K, Karlikaya G, Akman O, Ojakian GK, Oktay M. Interaction of extracellular matrix and activin-A in the initiation of follicle growth in the mouse ovary. Biol Reprod 2000; 63:457-61. [PMID: 10906050 DOI: 10.1095/biolreprod63.2.457] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
The precise mechanism for the initiation of follicle growth and progression through the earliest stages of follicle development remains largely unknown. Activins play a role during early follicle development, and evidence suggests that the extracellular matrix plays a role during later stages of follicular growth. We investigated the role of activin-A and extracellular matrix in follicle growth initiation and early follicular development in the mouse ovary. Ovaries were collected from 5-day-old mice and cultured for 10 days on polylysine, collagen, or laminin in the presence or absence of recombinant human activin-A. Follicle density, indices of follicle growth initiation (primary:primordial follicle [PY:PD] and primary:total follicle [PY:TF] ratios), ratios of multilayer follicle:total follicle (ML:TF), and follicle growth rates were compared between groups. Follicle densities were significantly higher in the extracellular matrix treatment group compared with the polylysine group (P < 0.01). Also, compared with polylysine, both collagen and laminin significantly increased indices of follicle growth initiation (PY:PD ratio: P < 0.001, odds ratio of 3.3; PY:TF ratio: P < 0.001, odds ratio of 2.5), and these were not altered by activin treatment. In the absence of activin-A, exposure to neither collagen nor laminin had an effect on multilayer follicle development. When activin-A was added, collagen and laminin had opposing effects on multilayer follicle development. Activin-A stimulated multilayer follicle development in the presence of laminin (ML:TF ratio: P = 0.01, odds ratio of 10.8), whereas it suppressed follicle growth in collagen (P = 0.01). Activin-A did not affect the ML:TF ratio in the polylysine-treated groups. These results strongly suggest that extracellular matrix components and activin-A interact with each other, and that they regulate follicle growth initiation and multilayer follicle development.
Collapse
Affiliation(s)
- K Oktay
- Departments of Obstetrics & Gynecology, Cornell University, Weill Medical College and New York Methodist Hospital, Brooklyn, New York 11215-9008, USA.
| | | | | | | | | |
Collapse
|
18
|
Eren E, Aytac U, Tetik E, Akman O, Kansu E, Gunduz U. Detection of BCR/ABL gene rearrangement and the elimination of rearranged clone in chronic myelocytic leukemia patients. Am J Hematol 2000; 63:85-9. [PMID: 10629574 DOI: 10.1002/(sici)1096-8652(200002)63:2<85::aid-ajh5>3.0.co;2-l] [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] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Cytogenetic and molecular studies were performed on 20 interferon-alpha receiving Turkish chronic myelocytic leukemia patients. Four different restriction endonucleases and bcr-G probe were used for southern blot analysis to detect rearrangements of the bcr gene. The RT-PCR method was also applied to detect chimeric bcr/abl mRNA. Seventeen patients showed a chromosomal break within the 5.8 kb M-bcr region by southern blot analysis while three cases out of 20 have not shown any rearrangement. These three cases were further analysed by RT-PCR and they were also found to be carrying the Philadelphia translocation (Ph). However, in four years of follow-up this RT-PCR positivity has disappeared, which suggests an elimination of Ph clone with prolonged interferon-alpha treatment.
Collapse
MESH Headings
- Adult
- Blotting, Southern
- Bone Marrow Cells/cytology
- Bone Marrow Cells/metabolism
- Cells, Cultured
- Child
- Chromosomes, Human, Pair 22/genetics
- Clone Cells
- Drug Administration Schedule
- Female
- Follow-Up Studies
- Gene Rearrangement
- Genes, abl/genetics
- Humans
- Interferon Type I/administration & dosage
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Male
- Meta-Analysis as Topic
- Middle Aged
- Philadelphia Chromosome
- RNA, Messenger/metabolism
- Recombinant Proteins
- Restriction Mapping
- Reverse Transcriptase Polymerase Chain Reaction
- Time
- Translocation, Genetic/genetics
Collapse
Affiliation(s)
- E Eren
- Department of Biology, METU, Ankara, Turkey.
| | | | | | | | | | | |
Collapse
|