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Yalcin O, Erdogan-Durmus S, Yarikkaya E. Diagnostic utility of immunocytochemistry by using liquid-based cytology (LBC) slides. Folia Histochem Cytobiol 2024; 62:1-12. [PMID: 38407325 DOI: 10.5603/fhc.97937] [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: 10/23/2023] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/27/2024] Open
Abstract
INTRODUCTION Cytological specimens, such as fine needle aspirations (FNAs) and exfoliative cytology samples, are minimally invasive options for diagnostic purposes. Liquid-based cytology (LBC), originally designed for cervical cytology, has gained prominence as an alternative technique for non-gynecological cytology. Immunocytochemistry (ICC) is an ancillary method used when diagnosis becomes challenging due to morphological overlap or the need for cellular origin clarification. This study aims to assess the diagnostic utility of ICC when applied to LBC slides and evaluate its effectiveness in relation to the waiting (lag) time of residual material. MATERIALS AND METHODS A total of 74 cases in which ICC was applied to LBC slides were studied over one year in a reference pathology laboratory (Prof. Dr. Cemil Tascioglu, Pathology Laboratory, City Hospital, Istanbul, Turkey). Cases in which immunohistochemistry (IHC) was performed on formalin-fixed paraffin-embedded cell blocks were excluded. The SurePath PAP method was used for the main LBC cytology slides. For the ICC study, 1-4 PAP-stained LBC slides were obtained from each case's residual material and stained with a primary antibody. RESULTS The positive immunostaining was obtained in 81% of cases. The samples were categorized into groups based on the waiting time of residual LBC material for ICC analysis: 1-5 days, 6-10 days, 11-20 days, and 21-38 days. Comparative analysis revealed a decline in ICC efficacy as the waiting (lag) time increased. Additionally, a statistically significant difference was observed between the 11-20 days and 21-38 days groups (P < 0.05). An analysis of 142 LBC slides stained by ICC revealed that nuclear markers exhibited higher positivity compared to non-nuclear markers, although no significant difference was detected between the two groups. CONCLUSIONS High positivity rates can be obtained in ICC studies performed on additional slides obtained from residual LBC material within the first 20 days. ICC applied to LBC slides is an important and useful alternative for diagnostic and prognostic markers in cases without a cell block or with a cell block without sufficient number of cells.
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Affiliation(s)
- Ozben Yalcin
- Prof. Dr. Cemil Tascioglu City Hospital, Department of Pathology, İstanbul, Turkiye
| | - Senay Erdogan-Durmus
- Prof. Dr. Cemil Tascioglu City Hospital, Department of Pathology, Cytopathology Division, İstanbul, Turkiye, l.
| | - Enver Yarikkaya
- İstanbul Training and Research Hospital, Department of Pathology, İstanbul, Turkiye
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Semiz Y, Singer R, Topal IO, Ucler S, Yalcin O. A Case of Linear Scleroderma En Coup de Sabre Accompanied with Migraine with Visual Aura and Idiopathic Intracranial Hypertension. Indian J Dermatol 2023; 68:346-348. [PMID: 37529473 PMCID: PMC10389142 DOI: 10.4103/ijd.ijd_992_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023] Open
Affiliation(s)
- Yavuz Semiz
- From the Department of Dermatology, Okmeydanı Training and Research Hospital (Prof. Dr. Cemil Taşçıoğlu City Hospital), Istanbul, Turkey E-mail:
| | - Ralfi Singer
- From the Department of Dermatology, Okmeydanı Training and Research Hospital (Prof. Dr. Cemil Taşçıoğlu City Hospital), Istanbul, Turkey E-mail:
| | - Ilteris Oguz Topal
- From the Department of Dermatology, Okmeydanı Training and Research Hospital (Prof. Dr. Cemil Taşçıoğlu City Hospital), Istanbul, Turkey E-mail:
| | - Serap Ucler
- Department of Neurology, Okmeydanı Training and Research Hospital (Prof. Dr. Cemil Taşçıoğlu City Hospital), Istanbul, Turkey
| | - Ozben Yalcin
- Department of Pathology, Okmeydanı Training and Research Hospital (Prof. Dr. Cemil Taşçıoğlu City Hospital), Istanbul, Turkey
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Semiz Y, Aktas E, Aktas S, Yalcin O. Multiple hyperkeratotic white papules in a 6-year-old girl: A rare presentation of granuloma annulare. DERMATOL SIN 2023. [DOI: 10.4103/ds.ds-d-22-00159] [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: 02/22/2023] Open
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Mangan MS, Sarici AM, Yalcin O, Aydin D, Yegen G, Seyahi E. Orbital Mass as the Only Presenting Sign with Overlapping Features of Lupus Erythematosus Panniculitis and Subcutaneous Panniculitis-Like T-Cell Lymphoma. Ocul Immunol Inflamm 2022; 31:717-720. [PMID: 35404730 DOI: 10.1080/09273948.2022.2054430] [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: 10/18/2022]
Abstract
PURPOSE Even though subcutaneous panniculitis-like T-cell lymphoma (SPTCL) and lupus erythematosus panniculitis (LEP) are two separate entities, recently they were claimed to represent two ends of a spectrum of T-cell-mediated orbital lymphoproliferative diseases. METHODS A 78-year-old woman presented with a 1-month history of right-sided periorbital swelling and redness. There was a palpable mass in the medial right lower eyelid with restriction of upward and lateral gaze. MRI revealed a 14 × 7 mm hypointense lesion in the anteromedial orbit. RESULTS The systemic and ocular findings, orbital biopsy with histopathology and immunochemistry showed overlapping features of LEP and SPTCL. The patient was consulted with rheumatology and hematology, and the physicians arrived at a consensus that the patient existed in the above-mentioned disease spectrum. She was started on systemic immunosuppressive treatment and her clinical findings improved substantially. CONCLUSIONS This is the first report of a patient, who presented with orbital mass causing vision loss and gaze restriction that had overlapping clinical and histopathologic features of LEP and SPTCL consistent with this novel disease spectrum, in the literature.
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Affiliation(s)
- Mehmet Serhat Mangan
- Haydarpasa Numune Education and Research Hospital, Sadik Eratik Eye Institute, Division of Ophthalmic Plastic and Reconstructive Surgery, University of Health Sciences, Istanbul, Turkey
| | - Ahmet Murat Sarici
- Cerrahpasa Faculty of Medicine, Department of Ophthalmology, Division of Ocular Oncology, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ozben Yalcin
- Okmeydani Education and Research Hospital, Department of Pathology, University of Health Sciences, Istanbul, Turkey
| | - Demet Aydin
- Okmeydani Education and Research Hospital, Department of Internal Medicine, Division of Hematology, University of Health Sciences, Istanbul, Turkey
| | - Gulcin Yegen
- Istanbul Faculty of Medicine, Department of Pathology, Istanbul University, Istanbul, Turkey
| | - Emire Seyahi
- Cerrahpasa Faculty of Medicine, Department of Internal Medicine, Division of Rheumatology, Istanbul University-Cerrahpasa, Istanbul, Turkey
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Ergan Sahin A, Karasoy Yesilada A, Yalcin O, Guler EM, Erbek H, Karabıyık D. Hydrogen-rich saline reduces tissue injury and improves skin flap survival on a rat hindlimb degloving injury model. J Plast Reconstr Aesthet Surg 2021; 74:2095-2103. [PMID: 33451944 DOI: 10.1016/j.bjps.2020.12.045] [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: 09/22/2020] [Revised: 12/01/2020] [Accepted: 12/17/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Degloving injuries represent a challenge in plastic surgery. The aim of this study is to acknowledge the protective effects of hydrogen-rich saline (HRS) solution on a rat hindlimb degloved skin flap. METHODS Twenty-one Sprague-Dawley rats were divided into three groups (control, saline and HRS). Degloving injury model was established, and flaps were sutured back following 5 min of ischemia. The control group did not receive any treatment. The saline group received intraperitoneal physiological saline (10 ml/kg) and the HRS group received intraperitoneal HRS solution (10 ml/kg) postoperatively and daily for 5 days after the operation. Skin samples were obtained for histological, immunohistochemical and biochemical evaluations. RESULTS Inflammation was lower in the HRS compared with saline (p = 0.02) and control (p = 0.004) groups. Edema was lower in the HRS compared with saline (p = 0.02) and control (p = 0.001) groups. Malondialdehyde (MDA) level was lower in the HRS than the control group (p = 0.01). Total antioxidant level was higher in the HRS compared with saline (p = 0.009) and control (p = 0.03) groups. Total oxidant level was lower in the HRS than the control group (p = 0.02). Oxidative stress index was lower in the HRS compared with saline (p = 0.001) and control (p = 0.0001) groups`. Vascular proliferation was higher in the HRS compared with the control group (p = 0.01). CONCLUSION Repeated HRS injections after trauma increased the viability of skin flap in rat degloving injury model by decreasing local tissue injury, due to its antioxidant, anti-inflammatory and angiogenic effects.
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Affiliation(s)
- Ayca Ergan Sahin
- Department of Plastic Surgery, Prof. Dr. Cemil Tascioglu City Hospital, University of Health Sciences, Istanbul, Turkey.
| | - Aysin Karasoy Yesilada
- Department of Plastic Surgery, Medipol Healthcare Group, Camlica Medipol University Hospital, Istanbul, Turkey
| | - Ozben Yalcin
- Department of Pathology, Prof. Dr. Cemil Tascioglu City Hospital, University of Health Sciences, Istanbul, Turkey
| | - Eray M Guler
- Health Sciences University Hamidiye Medicine Faculty Department of Medical Biochemistry, Istanbul, Turkey
| | - Harun Erbek
- Department of Plastic Surgery, Prof. Dr. Cemil Tascioglu City Hospital, University of Health Sciences, Istanbul, Turkey
| | - Damla Karabıyık
- Department of Pathology, Prof. Dr. Cemil Tascioglu City Hospital, University of Health Sciences, Istanbul, Turkey
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Yalcin O, Tanik C, Polat Y, Can M, Kabukcuoglu F. Primary Central Nervous System Lymphoma in Immunocompetent Patients: A Literature Review and the Experiment. Cyprus J Med Sci 2017. [DOI: 10.5152/cjms.2017.189] [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: 11/22/2022]
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Yalcin O, Budak M. Un-methylation of the survivin gene has no effect on immunohistochemical expression of survivin protein in lung cancer patients with squamous cell carcinoma. BRATISL MED J 2017; 118:160-163. [PMID: 28319412 DOI: 10.4149/bll_2017_032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Survivin is a member of the inhibitor of apoptosis (IAP) family. The function of the survivin protein is to inhibit caspase activation, thereby leading to negative regulation of apoptosis or programmed cell death. This has been shown by the disruption of survivin induction pathways leading to an increased apoptosis and decreased tumour growth. These data suggest that survivin may provide a new target for cancer treatment, which would distinguish transformed cells from normal cells. In the present study, we aimed to investigate exon 1 of the survivin gene by means of methylation-specific PCR and evaluate its impact on survivin protein expression following DNA isolation and bisulphite modification in paraffin-embedded normal and tumour tissues of lung cancer patients with squamous cell carcinoma. We used 41 squamous cancer tissues with methylation in exon 1 of the survivin gene and non-methylation in corresponding tumours. However, the immunohistochemistry staining of these samples demonstrated an increased survivin protein compared to normal tissue. While there is almost no other study to date on this subject matter, we believe that the absence of methylation in exon 1 of the survivin gene may not affect disease prognosis as it has no effect on expression, and possible promoter methylation or transcription factors (Tab. 1, Fig. 4, Ref. 15).
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Aktoz T, Caloglu M, Yurut-Caloglu V, Yalcin O, Aydogdu N, Nurlu D, Arda E, Inci O. Histopathological and biochemical comparisons of the protective effects of amifostine and l
-carnitine against radiation-induced acute testicular toxicity in rats. Andrologia 2016; 49. [DOI: 10.1111/and.12754] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/17/2016] [Indexed: 11/28/2022] Open
Affiliation(s)
- T. Aktoz
- Department of Urology; Faculty of Medicine; Trakya University; Edirne Turkey
| | - M. Caloglu
- Department of Radiation Oncology; Faculty of Medicine; Trakya University; Edirne Turkey
| | - V. Yurut-Caloglu
- Department of Radiation Oncology; Faculty of Medicine; Trakya University; Edirne Turkey
| | - O. Yalcin
- Department of Pathology; Faculty of Medicine; Trakya University; Edirne Turkey
| | - N. Aydogdu
- Department of Physiology; Faculty of Medicine; Trakya University; Edirne Turkey
| | - D. Nurlu
- Department of Radiation Oncology; Faculty of Medicine; Trakya University; Edirne Turkey
| | - E. Arda
- Department of Urology; Faculty of Medicine; Trakya University; Edirne Turkey
| | - O. Inci
- Department of Urology; Faculty of Medicine; Trakya University; Edirne Turkey
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Yalcin O, Sezer E, Kabukcuoglu F, Kilic AI, Sari AG, Cerman AA, Altunay IK. Presence of ulceration, but not high risk zone location, correlates with unfavorable histopathological subtype in facial basal cell carcinoma. Int J Clin Exp Pathol 2015; 8:15448-15453. [PMID: 26823913 PMCID: PMC4713699] [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] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 10/24/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Basal cell carcinoma (BCC) has been stratified into low- and high-risk according to their propensity for local recurrence. Risk factors for recurrence include histologic subtype, anatomic location (i.e. H-zone of the face), horizontal diameter, and patient health status. OBJECTIVE To assess if favorable (superficial, nodular, adenoid and trabecular) and unfavorable (infiltrative, morpheaform, micronodular, metatypical, basosquamous) histopathological subtypes of BCC do correlate with anatomic location on the face (facial high risk versus non-high risk zones). METHODS Histopathological specimens of all facial BCCs, which were histopathologically diagnosed in the Pathology Department of Şişli Etfal Training Hospital, between the years 2008 and 2014 were retrospectively studied. Histopathological aggressive and non-aggressive subtypes as well as the presence of ulceration were correlated with facial high-risk (i.e. H-zone) and low risk anatomical locations. RESULTS Of 184 BCC of unfavorable subtypes, 101 cases were identified in facial high-risk anatomical region (H-zone) compared to 83 cases at non H-zone (P = 0.553). On the other hand the ulceration rate was significantly higher for unfavorable histological subtypes than in the favorable histopathological subtype group (P = 0.042). Regarding anatomic site, ulceration frequency was not significantly different for the H-versus non-high risk zones (P = 0.335). CONCLUSIONS A correlation of unfavorable histopathological subtype of BCC and high-risk anatomical location (i.e. H-zone) was not observed in our study. Our results however confirmed a significantly higher rate of ulceration in the subgroup of aggressive histopathological BCC forms. Thus, factors other than histopathological subtype (such as narrow excision margin related to difficult surgical technique in H-zone, microcirculation, vasculature and host inflammatory response) may be responsible for the high recurrence rate in facial H-zone-located BCCs.
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Affiliation(s)
- Ozben Yalcin
- Department of Pathology, Sisli Etfal Training and Research HospitalIstanbul, Turkey
| | - Engin Sezer
- Department of Dermatology, School of Medicine, Acibadem UniversityIstanbul, Turkey
| | - Fevziye Kabukcuoglu
- Department of Pathology, Sisli Etfal Training and Research HospitalIstanbul, Turkey
| | - Ayse Irem Kilic
- Department of Pathology, Sisli Etfal Training and Research HospitalIstanbul, Turkey
| | - Ahu Gulcin Sari
- Department of Pathology, Sisli Etfal Training and Research HospitalIstanbul, Turkey
| | - Asli Aksu Cerman
- Department of Dermatology, Sisli Etfal Training and Research HospitalIstanbul, Turkey
| | - Ilknur Kivanc Altunay
- Department of Dermatology, Sisli Etfal Training and Research HospitalIstanbul, Turkey
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Gungor Ugurlucan F, Alper N, Ayvacikli G, Nehir A, Celik R, Yalcin O. Comparison of home-based and outpatient clinic-based intravaginal electrical stimulation for the treatment of urinary incontinence. Minerva Ginecol 2014; 66:347-353. [PMID: 25020054] [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: 06/03/2023]
Abstract
AIM Aim of the study was to compare the effects of outpatient clinic-based versus home-based intravaginal electrical stimulation (ES) for the treatment of urinary incontinence. METHODS Women applying with the complaint of urinary incontinence and offered ES treatment were divided into outpatient clinic-based or home-based ES. Patients were instructed about home-based ES at the outpatient clinic by certified physiotherapy nurses. Bladder diary, 1-hour pad test, and King's-Health-Questionnaire (KHQ) were performed before and after treatment. ES was applied for 20 minutes, 6-8 weeks with pulses of 10-50 Hz square waves at a 300 μs or 1 ms pulse duration and a maximal output current of 24 to 60 mA with 5-10 Hz frequency, three times/week. RESULTS Twenty-four patients received outpatient clinic-based, 22 patients received home-based ES. Pad test, bladder diary and pelvic floor muscle strength parameters in both groups improved significantly after treatment, with no significant difference between the two groups. Seven patients (31.8%) were cured, six patients (27.3%) were much improved, and seven patients (31.8%) were improved in the home-based ES group. Nine patients (37.5%) were cured, six patients (25%) were much improved, and six patients (25%) were improved and in the outpatient clinic-based ES group. There was an improvement in quality of life in all domains in both groups when the pretreatment and post-treatment KHQ results were compared, with no significant difference between the two groups. CONCLUSION Home-based ES is as effective in the treatment of urinary incontinence as outpatient clinic-based ES with significant improvement in objective and subjective parameters.
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Affiliation(s)
- F Gungor Ugurlucan
- Department of Obstetrics and Gynecology Division of Urogynecology, Istanbul University Istanbul Medical School, Istanbul, Turkey -
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Affiliation(s)
- M U Kalayci
- General Surgery Clinics, Dr Sadi Konuk Training and Research Hospital.
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SAHIN G, ADAS G, KOC B, AKCAKAYA A, DOGAN Y, Goksel S, Yalcin O. Is cervical inlet patch important clinical problem? Int J Biomed Sci 2014; 10:129-35. [PMID: 25018682 PMCID: PMC4092081] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 04/10/2014] [Indexed: 11/02/2022]
Abstract
AIM In this study we aim to determine the frequency of Inlet Patch (IP) and its association to clinical symptoms and draw attention to be aware of this heterotopic gastric mucosa. METHODS This study was a prospective case series that IP was detected in the upper gastrointestinal endoscopy. Patients with laringopharyngeal reflux symptoms underwent endoscopy between March 2009 and July 2012 in two different institutions. All the biopsies were obtained from if there is the IP lesion and antral or/and gastric mucosa. The data was prospectively evaluated. The prevalence was compared with those of patients that did not determine IP in the study period. RESULTS 3907 upper gastrointestinal system endoscopy was performed while 123 patients consist of 51 male and 72 female was determined as IP. The prevalence of IP in patiens who underwent upper gastrointestinal endoscopy was 3.14% in our study. The majority of symptoms of those who had IP were laringopharyngeal reflux symptoms. Heterotopic gastric mucosa was fixed in 114 cases while 28 chronic inflammation, 9 esophagitis, 5 intestinal metaplasia, 4 glicogenic acanthosis were obtained as additional findings in pathological examinations. CONCLUSION Heterotopic gastric mucosa in the proximal esophagus is a frequent finding if the endoscopist is aware of this entity. The importance of IP is the increasing number of cases of neoplastic transformation. Symptomatic patients should be treated and should be considered of the complications of heterotopic gastric mucosa.
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Affiliation(s)
- Gurol SAHIN
- Ethica Hospital, Department of Surgery/Istanbul, Turkey
| | - Gokhan ADAS
- Bakırkoy Sadi Konuk Training and Research Hospital, Department of Surgery/Istanbul, Turkey
| | - Bora KOC
- Bakırkoy Sadi Konuk Training and Research Hospital, Department of Surgery/Istanbul, Turkey
| | - Adem AKCAKAYA
- Bezmialem Vakif University, Department of Surgery/Istanbul, Turkey
| | - Yasar DOGAN
- Bakırkoy Sadi Konuk Training and Research Hospital, Department of Surgery/Istanbul, Turkey
| | - Suha Goksel
- University of Acıbadem, Medical School, Department of Pathology/Istanbul, Turkey
| | - Ozben Yalcin
- University of Acıbadem, Medical School, Department of Pathology/Istanbul, Turkey
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Ugurlucan FG, Erkan HA, Yasa C, Yalcin O. Does tension-free vaginal tape and tension-free vaginal tape-obturator affect urodynamics? Comparison of the two techniques. CLIN EXP OBSTET GYN 2013; 40:536-541. [PMID: 24597250] [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: 06/03/2023]
Abstract
AIM To evaluate the effects of tension-free vaginal tape (TVT) and tension-free vaginal tape-obturator (TVT-O) operations on urodynamics and subjective and objective outcomes. MATERIALS AND METHODS Thirty-six patients with stress or mixed urinary incontinence underwent TVT or TVT-O. Bristol Female Lower Urinary Tract Symptoms (BFLUTS) Questionnaire-Scored Form, one-hour pad test, Q-tip test, perineometer, and urodynamics were performed before and after the operations. Blaivas-nomogram was used for assessment of postoperative voiding difficulty. RESULTS Nineteen patients underwent TVT-O and 17 patients underwent TVT. Mean follow-up was 18.4 +/- 6.8 months. There was no difference between two groups regarding demographic variables, degree of prolapse, type of incontinence, perineometer, Q-tip test, pad test, and urodynamics. There was a significant increase in the maximum urethral closure pressure (MUCP) and residual volume in TVT-O group. According to Blaivas-nomogram, five patients had mild, one had medium obstruction in the TVT-O group, whereas one had mild and three had medium obstruction in TVT group. Two bladder perforations occurred during TVT. One patient developed groin pain after TVT-O. CONCLUSIONS TVT-O may lead to an increase in MUCP and residual urine volume. TVT-O is as efficient as TVT and leads to milder obstruction when compared to TVT.
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Affiliation(s)
- F Gungor Ugurlucan
- Istanbul University, Medical Faculty, Department of Obstetrics and Gynecology, Istanbul, Turkey.
| | - H Ayyildiz Erkan
- Istanbul University, Medical Faculty, Department of Obstetrics and Gynecology, Istanbul, Turkey
| | - C Yasa
- Istanbul University, Medical Faculty, Department of Obstetrics and Gynecology, Istanbul, Turkey
| | - O Yalcin
- Istanbul University, Medical Faculty, Department of Obstetrics and Gynecology, Istanbul, Turkey
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Meram E, Yilmaz BD, Bas C, Atac N, Yalcin O, Meiselman HJ, Baskurt OK. Shear stress-induced improvement of red blood cell deformability. Biorheology 2013; 50:165-76. [DOI: 10.3233/bir-130637] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Ece Meram
- Koç University School of Medicine, Sariyer, Istanbul, Turkey
| | - Bahar D. Yilmaz
- Koç University School of Medicine, Sariyer, Istanbul, Turkey
| | - Ceren Bas
- Koç University School of Medicine, Sariyer, Istanbul, Turkey
| | - Nazlı Atac
- Koç University School of Medicine, Sariyer, Istanbul, Turkey
| | - O. Yalcin
- Koç University School of Medicine, Sariyer, Istanbul, Turkey
| | - Herbert J. Meiselman
- Department of Physiology and Biophysics, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Oguz K. Baskurt
- Koç University School of Medicine, Sariyer, Istanbul, Turkey
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Gilbaz E, Gungor Ugurlucan F, Aslay I, Yalcin O. The effects of simple and radical hysterectomy and radiotherapy on lower urinary tract symptoms and urodynamics. EUR J GYNAECOL ONCOL 2013; 34:248-253. [PMID: 23967556] [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: 06/02/2023]
Abstract
PURPOSE To evaluate effects of simple/radical hysterectomy, radiotherapy, and their combination on lower urinary tract symptoms (LUTS) and urodynamics. MATERIALS AND METHODS Four groups were formed as simple hysterectomy; Group 1 (n = 20), Type-II hysterectomy; Group 2 (n = 11), Type-II hysterectomy + radiotherapy; Group 3 (n = 16), radiotherapy; Group 4 (n = 20). LUTS, bladder diary, pad test, Q-tip test, stress-test, urodynamics, bladder-wall-thickness measurement, King's Health Questionnaire (KHQ) performed prior and at six and 18 months after treatment. RESULTS Pre-treatment prevalence of LUTS was higher in Group 1 and decreased at six and 18 months. LUTS increased in Groups 2, 3, and 4 at six months; some of the symptoms decreased to pre-treatment levels at 18 months. Quality of life improved in Group 1 and worsened in the others. Maximum bladder capacity increased in Group 1 and decreased in Groups 2 and 3. Bladder-wall-thickness, maximum detrusor pressures increased, urine sensation decreased in Groups 2 and 4. Maximum vesical pressure increased and compliance decreased in Groups 2 and 3. CONCLUSION LUTS may decrease after simple hysterectomy. Radical hysterectomy and radiotherapy result in voiding dysfunction; however some of the symptoms may decrease to pre-treatment levels during follow-up.
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Affiliation(s)
- E Gilbaz
- Istanbul University, Istanbul Medical Faculty, Department of Obstetrics and Gynecology, Istanbul, Turkey
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Brisken C, Rajaram R, Ayyannan A, Beleut M, Yalcin O. Abstract PL-1: Hormones and the Breast: Local and Environmental Interactions. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-pl-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
A woman's reproductive history affects her risk to get breast cancer. In particular, the number of menstrual cycles she experiences correlates with risk. We use tissue recombination experiments and different mouse mutant models to discern the roles of the ovarian hormones estrogens and progesterone act in the mammary gland. While estrogens drive pubertal development, progesterone is the major driver of proliferation in the adult mammary epithelium. Both steroids rely strongly on paracrine signaling to elicit cell proliferation and other biological effects.
Perinatal exposure to environmentally relevant concentrations of a high production volume chemical, bisphenol A, that is detected in human due to exposure through consumer products, results in persistent changes in the mammary gland. The cell number is increased in in adult females as is the response to progesterone.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr PL-1.
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Affiliation(s)
- C Brisken
- Ecole Polytechnique Fédérale de Lausanne (EPFL); ISREC/SV; EPFL; Izmir Institute of Technology
| | - R Rajaram
- Ecole Polytechnique Fédérale de Lausanne (EPFL); ISREC/SV; EPFL; Izmir Institute of Technology
| | - A Ayyannan
- Ecole Polytechnique Fédérale de Lausanne (EPFL); ISREC/SV; EPFL; Izmir Institute of Technology
| | - M Beleut
- Ecole Polytechnique Fédérale de Lausanne (EPFL); ISREC/SV; EPFL; Izmir Institute of Technology
| | - O Yalcin
- Ecole Polytechnique Fédérale de Lausanne (EPFL); ISREC/SV; EPFL; Izmir Institute of Technology
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18
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Caloglu M, Aktoz T, Yurut-Caloglu V, Yalcin O, Aydogdu N, Nurlu D, Arda E, Inci O. PO-49: Protective Effects of Amifostine and L-Carnitine Against Radiation induced Acute Testicular toxicity. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(15)34603-x] [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: 11/16/2022]
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19
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Abstract
PURPOSE Magnetic compression anastomosis is used for gastrointestinal, biliary, and urinary anastomoses. We have developed a simple magnetic compression gastrostomy technique in rats. METHODS Animals were randomized into two groups (n = 12 each): magnetic gastrostomy (MG) and surgical gastrostomy (SG) (control). In the MG group, a magnetic insertion catheter was coupled with the first magnetic ball and introduced transorally into the stomach. A second magnetic ball was placed subcutaneously into the left upper quadrant. The two magnetic balls (4 mm) were strongly coupled together. On postoperative day (PD) 20 (MG group) and PD10 (SG group), rats were killed, gastrostomies were evaluated macroscopically and histopathologically, and mechanical burst testing was performed. RESULTS Two animals died due to suspected leaks. Macroscopic evaluation indicated no gastrostomy canal in one rat in each group. Mild adhesion was observed in two rats in the MG group. Moderate adhesion was observed in all rats in the SG group. No significant differences were observed in burst pressure between the two groups (means: MG group, 143 mmHg, n = 9; SG group, 159 mmHg, n = 8). CONCLUSIONS Magnetic compression gastrostomy can be performed easily in rats, and may be developed in future as a simple alternative to some gastrostomy procedures in humans.
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Affiliation(s)
- Ibrahim Uygun
- Department of Pediatric Surgery and Pediatric Urology, Medical Faculty of Dicle University, 21280, Diyarbakir, Turkey.
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20
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Uygun I, Okur MH, Cimen H, Keles A, Yalcin O, Ozturk H, Otcu S. Magnetic Compression Ostomy as New Cystostomy Technique in the Rat: Magnacystostomy. Urology 2012; 79:738-42. [DOI: 10.1016/j.urology.2011.11.048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 11/23/2011] [Accepted: 11/29/2011] [Indexed: 10/28/2022]
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21
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22
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Api O, Akil A, Uzun MG, Acioglu HC, Yalcin O, Api M, Unal O. Fetal retroperitoneal lipoblastoma: ultrasonographic appearance of a rare embryonal soft tissue tumor. J Matern Fetal Neonatal Med 2010; 23:1069-71. [PMID: 20718582 DOI: 10.3109/14767050903301025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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23
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Abstract
Buerger's disease (thromboangiitis obliterans) is a recurrent inflammatory, nonatherosclerotic vasoocclusive disease, which typically affects small and medium-sized arteries, veins and nerves of the upper and lower extremities. Although the exact underlying causes of Buerger's disease are still unknown, the disease is strongly associated with tobacco smoking. Affected patients are mostly young male smokers who develop ulcers and gangrene of the toes and fingers as a result of vascular ischaemia. We report a 47-year-old man with scrotal and penile necrosis. Partial penectomy, scrotal debridement and urethra-cutaneous anastomosis were performed.
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Affiliation(s)
- T Aktoz
- Department of Urology, Faculty of Medicine, University of Trakya, Edirne, Turkey
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24
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Akhan SE, Dogan Y, Akhan S, Iyibozkurt AC, Topuz S, Yalcin O. Pelvic actinomycosis mimicking ovarian malignancy: three cases. EUR J GYNAECOL ONCOL 2008; 29:294-297. [PMID: 18592800] [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: 05/26/2023]
Abstract
OBJECTIVE Three cases of pelvic actinomycosis initially diagnosed as pelvic malignancy and treated surgically are reported. CASES The first case was a 38-year-old multiparous woman who was referred to our clinic because of bilateral ovarian solid masses. With the impression of ovarian carcinoma, a laparotomy was performed. During surgery adhesiolysis, total abdominal hysterectomy, bilateral salpingo-oophorectomy, infracolic omentectomy, appendectomy, peritoneal washings, and peritoneal abscess drainage were performed. The second patient was a 37-year-old woman who presented with a left-sided fixed solid mass highly suggestive of pelvic malignancy. Both ureters were found to be dilated with hydronephrosis in the right kidney supporting the diagnosis of retroperitoneal fibrosis. Excision of the mass, colectomy and temporary diverting colostomy and stent insertion to the left ureter were performed. Colostomy repair was performed five months later. On the fifth day postoperatively, fascial necrosis developed so a Bogota-bag was placed on the anterior abdominal wall and left for secondary healing. The third patient was a 51-year-old postmenopausal woman incidentally diagnosed as having a pelvic mass while having been investigated for constipation and nausea. She had had a colostomy one year before and a reanastomosis two months after. Total abdominal hysterectomy and bilateral salpingo-oophorectomy were performed. In all cases, histopathologic staining of the specimens revealed chronic inflammation containing actinomycosis abscesses confirmed with microbiologic identification. CONCLUSION Pelvic actinomycosis is an uncommon cause of a pelvic mass. However, it should be kept in mind in the differential diagnosis of pelvic masses, especially in the patients with a history of IUD use to avoid an unnecessary extensive surgical procedure.
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Affiliation(s)
- S E Akhan
- Department of Obstetrics and Gynecology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey.
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25
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Yalniz E, Alicioglu B, Yalcin O, Yilmaz B. Non specific magnetic resonance features of chondromyxoid fibroma of the iliac bone. J BUON 2007; 12:407-409. [PMID: 17918298] [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: 05/25/2023]
Abstract
Chondromyxoid fibroma is a benign cartilaginous neoplasm. The tumor is rare, perhaps the rarest of all bone tumors. It is more common in long bones and rare in pelvic bones. We report a case of a 31-year-old woman with chondromyxoid fibroma arising from the iliac bone and presenting with leg pain due to compression on the femoral nerve. Magnetic resonance imaging (MRI) features were non specific for chondromyxoid fibroma. We emphasize the need to consider it in the differential diagnosis of chondrosarcoma.
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Affiliation(s)
- E Yalniz
- Department of Orthopedic Surgery, Trakya University School of Medicine, Edirne, Turkey
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26
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Yalcin O, Üstündag S, Sen S, Usta U, Huseyinova G, Puyan F, Kutlu K, Tudan M. The Effects of Enalapril and Irbesartan in Experimental Diabetic Nephropathy. BIOTECHNOL BIOTEC EQ 2007. [DOI: 10.1080/13102818.2007.10817475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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27
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Naros G, Yalcin O, Maljevic S, Wuttke T, Dervent A, Saltik S, Cokar O, Aykut-Bingol C, Agan K, Caglayan H, Steinlein O, Lerche H. Molecular analysis of a mutation in the S5-H5 linker of the KCNQ2 K+ channel causing neonatal convulsions. Akt Neurol 2006. [DOI: 10.1055/s-2006-953339] [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: 10/20/2022]
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28
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Toptas B, Baykal A, Yesilipek A, Isbir M, Kupesiz A, Yalcin O, Baskurt OK. L-carnitine deficiency and red blood cell mechanical impairment in beta-thalassemia major. Clin Hemorheol Microcirc 2006; 35:349-57. [PMID: 16899956] [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: 05/11/2023]
Abstract
L-carnitine is an essential element of intermediary metabolism and also was shown to be effective in maintaining normal red blood cell (RBC) function. This study aimed at investigating plasma free L-carnitine concentrations and effectiveness of L-carnitine supplementation in protecting deterioration of RBC properties in beta-thalassemia major patients. Plasma free L-carnitine concentrations were determined in the blood samples obtained before their regular transfusion (about one month after the previous transfusion). Each patient received 100 mg/kg/day oral L-carnitine supplementation. RBC deformability, lipid peroxidation and intracellular free calcium concentrations were investigated before and after this treatment. Plasma free L-carnitine levels and RBC deformability before the treatment were found to be lower whereas lipid peroxidation and intracellular calcium concentration in RBC were higher compared to those of the control subjects before the L-carnitine treatment. After one month supplementation of L-carnitine lipid peroxidation and intracellular calcium concentrations were found to be decreased and RBC deformability was improved, accompanying the significantly increased plasma L-carnitine concentrations. These results suggest that L-carnitine can be used as a supplement in beta-thalassemic patients, to prevent RBC deterioration.
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Affiliation(s)
- B Toptas
- Department of Biochemistry, Akdeniz University School of Medicine, Antalya, Turkey
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29
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Baskurt OK, Yalcin O, Gungor F, Meiselman HJ. Hemorheological parameters as determinants of myocardial tissue hematocrit values. Clin Hemorheol Microcirc 2006; 35:45-50. [PMID: 16899905] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
It is well known that the hematocrit in microvessels with diameters smaller than 1000 microm is lower than either venous or arterial hematocrit, thereby resulting in significantly lower mean hematocrit values for vessels perfusing a given tissue (i.e., lower tissue hematocrit). The mechanisms that underlie this reduction of microvascular hematocrit include axial migration, plasma skimming and the Fahraeus Effect. It has been previously demonstrated in rats that a linear hematocrit gradient normally exists through the thickness of the left ventricular myocardium, and that this gradient is sensitive to alterations of the rheological properties of the circulating blood. The gradient is abolished if the RBC in the perfusate are rigid; fibrinogen infusions, and thus increases of both plasma viscosity and RBC aggregation, also affect this gradient. In a new series of studies, it has been observed that enhanced RBC aggregation affects the myocardial hematocrit gradient regardless of alterations of plasma viscosity. Although the exact mechanisms responsible for the myocardial hematocrit gradient, as well as its physiological significance, are not yet clearly known, it is possible to speculate that alterations in local hematocrit could adversely affect myocardial perfusion and function.
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Affiliation(s)
- O K Baskurt
- Department of Physiology, Akdeniz University Faculty of Medicine, Antalya, Turkey.
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30
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Abstract
Inflammatory pseudotumor (IPT) of the spleen is a rare benign tumor with unknown etiology. It causes problems in the diagnosis because of mimicking some hematopoetic malignancies. Here we report the case of a 36-yr-old woman complaining of nausea and insomnia. Laboratory investigations were limited to increase of leukocyte and thrombocyte count. Ultrasonography and magnetic resonance (MR) imaging showed circumscribed solid lobulated mass, measuring about 6.5 cm in diameter, located in the dorsal region of the spleen. Splenectomy was performed with the differential diagnosis including hamartoma and lymphoma of the spleen. Histological examination of the sharply demarcated splenic mass consisted of myofibroblasts and admixture of inflammatory cells. Immunohistochemistry and in situ hybridization were performed. IPT of the spleen was diagnosed. Epstein-Barr virus (EBV) was detected in the tumor by in situ hybridization. This rare entity is presented because of its clinical, radiological and pathological difficulties in the differential diagnosis.
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Affiliation(s)
- F Oz Puyan
- Department of Pathology, Trakya University Medical Faculty, Edirne, Turkey.
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31
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Gurbuz N, Yalcin O, Aksu TA, Baskurt OK. The relationship between the enzyme activity, lipid peroxidation and red blood cells deformability in hemizygous and heterozygous glucose-6-phosphate dehydrogenase deficient individuals. Clin Hemorheol Microcirc 2004; 31:235-42. [PMID: 15322329] [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: 04/30/2023]
Abstract
Glucose-6-phosphate dehydrogenase (G6PD) activity, red blood cell (RBC) lipid peroxidation and deformability were investigated in hemizygous and heterozygous G6PD deficient subjects and compared with normal individuals. None of the subjects were in acute hemolytic crises. G6PD activity was assessed based on the spectrophotometric determination of generated NADPH. Lipid peroxidation was measured as thiobarbutiric acid reactive substances (TBARS). RBC deformability was analyzed by ektacytometry. RBC lipid peroxidation was found to be significantly higher in hemizygous subjects compared to control and heterozygous subjects, while RBC deformability was found to be significantly impaired. However, although lipid peroxidation was higher than control, RBC deformability was not significantly different from control in heterozygous individuals, characterized by significantly lower RBC G6PD activity. There were no significant correlations between these three parameters when the three groups were analyzed separately, but a significant negative correlation was found to exist between G6PD activity and TBARS when the pooled data from the three groups were used for the analysis. This was also true for the relationship between RBC deformability and G6PD activity. It has been concluded that G6PD activity is not a good predictor of oxidative damage resulting in mechanical impairment in heterozygous individuals.
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Affiliation(s)
- N Gurbuz
- Department of Biochemistry, Akdeniz University Faculty of Medicine, Antalya, Turkey.
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32
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Aslan E, Beji NK, Coskun A, Yalcin O. An assessment of the importance of pad testing in stress urinary incontinence and the effects of incontinence on the life quality of women. Int Urogynecol J 2003; 14:316-9; discussion 320. [PMID: 14618307 DOI: 10.1007/s00192-003-1088-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2001] [Accepted: 03/24/2003] [Indexed: 10/26/2022]
Abstract
Our objectives in this study were to determine the severity of incontinence using pad testing and the effects of incontinence on the life quality of women with stress incontinence. Fifty women with a diagnosis of stress urinary incontinence were selected for the study. The Symptom Severity Index (SSI) and Symptom Impact Index (SII) were used to determine the severity and impact of incontinence. Afterwards the women were given a 1-h pad test. According to the pad tests 38% of women suffered severe to very severe incontinence. Women who showed severe incontinence on pad testing scored high in the SSI; on the other hand, no relationship was found between SII and pad test indicators. It was also observed that both SSI and SII scores increased with increasing age of the women (SSI: r=0.29, P<0.05; SII: r=0.30 P<0.05). It may therefore be concluded that the severity of incontinence makes no difference in the effects of incontinence on the life quality of women.
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Affiliation(s)
- E Aslan
- Florence Nightingale College of Nursing, University of Istanbul, Sisli Istanbul, Turkey.
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33
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Yerer MB, Aydogan S, Yapislar H, Yalcin O, Kuru O, Baskurt OK. Melatonin increases glutathione peroxidase activity and deformability of erythrocytes in septic rats. J Pineal Res 2003; 35:138-9. [PMID: 12887658 DOI: 10.1034/j.1600-079x.2003.00062.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Baskurt OK, Bor-Kucukatay M, Yalcin O, Meiselman HJ. Aggregation behavior and electrophoretic mobility of red blood cells in various mammalian species. Biorheology 2001; 37:417-28. [PMID: 11204547] [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: 02/19/2023]
Abstract
Differences of red blood cell (RBC) aggregation among various mammalian species has been previously reported for whole blood, for RBC in autologous plasma, and for washed RBC re-suspended in polymer solutions. The latter observation implies the role of cellular factors, yet comparative studies of such factors are relatively limited. The present study thus investigated RBC aggregation and RBC electrophoretic mobility (EPM) for guinea pigs, rabbits, rats, humans and horses; RBC were re-suspended in isotonic 500 kDa dextran solutions for the EPM and aggregation measurements, with aggregation studies also done in autologous plasma. Salient results included: (1) species-specific RBC aggregation in both plasma and dextran (horse > human > rat > rabbit approximately = guinea pig) with a significant correlation between aggregation in the two media; (2) similar EPM values in PBS for rat, human and horse, a lower value for guinea pig, and a markedly reduced EPM for rabbit RBC; (3) EPM values in dextran with a rank order identical to that for cells in PBS; (4) relative EPM results indicating formation of a polymer-poor, low viscosity depletion layer at the RBC surface (greatest depletion for horse RBC). EPM-aggregation correlations were evident and generally consistent with the Depletion Model for aggregation, yet did not fully explain differences between species; additional studies at various ionic strengths and with various dextran fractions thus seem warranted.
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Affiliation(s)
- O K Baskurt
- Department of Physiology, Akdeniz University School of Medicine, Antalya, Turkey.
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35
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Abstract
The effects of recombinant human erythropoietin (rhEPO) on red blood cell (RBC) rheological properties were investigated in rats. Rats received intramuscular injections of 150 U/kg/d rhEPO for 5 d, following which blood samples were obtained 1, 5 or 10 d later. RBC deformability was assessed by determining cell transit times through 5-microm micropores (CTA) and RBC shape recovery time constants via photometry, aggregation in plasma and dextran was measured by photometry and RBC electrophoretic mobility was determined in a cylindrical electrophoresis system. RBC aggregation was found to be significantly decreased on day 5 after rhEPO treatment (P < 0.05), yet was unchanged from control on days 1 and 10. Mean RBC micropore transit times remained unchanged, but the distributions of transit times were altered; compared with control, the 5th percentiles on both days 1 and 5 were decreased and the 95th percentile on day 1 was elevated. Electrophoretic mobility of RBCs in phosphate-buffered saline was significantly increased on day 5 after rhEPO treatment (P < 0.05), with mobility measurements in dextran 500 (MW = 500 kDa) solutions suggesting that the cells' surface properties related to the formation of a 'depletion layer' may be altered on day 1. These results indicate that the rheological behaviour of RBC as a consequence of rhEPO treatment are temporal and are affected by the presence of reticulocytes as well as by the average age of the circulating cells.
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Affiliation(s)
- M Bor-Kucukatay
- Department of Physiology, Akdeniz University School of Medicine, Antalya, Turkey
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36
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Yalcin O, Bor-Kucukatay M, Senturk UK, Baskurt OK. Effects of swimming exercise on red blood cell rheology in trained and untrained rats. J Appl Physiol (1985) 2000; 88:2074-80. [PMID: 10846020 DOI: 10.1152/jappl.2000.88.6.2074] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Red blood cell (RBC) mechanical properties were investigated after swimming exercise in trained and untrained rats. A group of rats was trained for 6 wk (60 min swimming, daily), and another group was kept sedentary. Blood samples were obtained either within 5 min or 24 h after 60 min swimming in both groups. In the untrained rats, the RBC aggregation index decreased to 2.60 +/- 0.4 immediately after exercise from a control value of 6.73 +/- 0.18 (P < 0.01), whereas it increased to 13.13 +/- 0.66 after 24 h (P < 0.01). RBC transit time through 5-microm pores increased to 3.53 +/- 0.16 ms within 5 min after the exercise from a control value of 2.19 +/- 0. 07 ms (P < 0.005). A very significant enhancement (166%) in RBC lipid peroxidation was detected only after 24 h. In the trained group, the alterations in all these parameters were attenuated; there was a slight, transient impairment in RBC deformability (transit time = 2.64 +/- 0.13 ms), and lipid peroxidation was found to be unchanged. These findings suggest that training can significantly limit the hemorheological alterations related to a given bout of exercise. Whether this effect is secondary to the training-induced reduction in the degree of metabolic and/or hormonal perturbation remains to be determined.
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Affiliation(s)
- O Yalcin
- Department of Physiology, Akdeniz University Faculty of Medicine, Antalya, Turkey
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37
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Atikeler K, Yeni E, Semercioz A, Yalcin O, Baydinc C. The value of the gonadotrophin-releasing hormone test as a prognostic factor in infertile patients with varicocele. Br J Urol 1996; 78:632-4. [PMID: 8944523 DOI: 10.1046/j.1464-410x.1996.14523.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To determine the value of the gonadotrophin-releasing hormone (GnRH) test in selecting which infertile patients with varicocele would benefit from varicocelectomy. PATIENTS, SUBJECTS AND METHODS The study comprised 30 patients with varicocele who presented between November 1993 and May 1994, and 10 control subjects. The basal serum level of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) were determined and all participants given 100 micrograms of GnRH nasally. The levels of FSH and LH were then determined for up to 2 h. The patients then underwent varicolectomy and the response was evaluated by comparing sperm quality before and after treatment and between those with increased or normal FSH and LH levels in response to the GnRH test. RESULTS Those patients who had increased FSH and LH levels after the GnRH test had a mean 121% increase in sperm density (P < 0.001), a 23% increase in sperm motility (P < 0.001) and a 40% decrease in sperm abnormality (P < 0.05). The respective values for those with normal levels of FSH and LH were 15% (P < 0.05), 11% (P > 0.05) and 11% (P > 0.05). CONCLUSION The GnRH test is useful for determining those patients who should benefit from varicocelectomy.
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Affiliation(s)
- K Atikeler
- Department of Urology, Medical Faculty, Firat University, Turkey
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38
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Güvenç M, Güvenç H, Yalcin O, Yumbul AZ, Baydinç C. Hydronephrotic type of bilateral multicystic dysplastic kidney. An unusual case. Pathologica 1994; 86:420-2. [PMID: 7708443] [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: 01/26/2023] Open
Abstract
25 year-old pregnant woman was admitted at week 29 of fetal development for routine ultrasonic evaluation of growth. Sonography of the fetal body revealed two cystic anechoic septated structures bilaterally. At autopsy of the stillborn neonate pathology confirmed congenital multicystic dysplastic kidney. We believe this is the first case reported.
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Affiliation(s)
- M Güvenç
- Department of Obstetrics, State Hospital, Elazig, Türkiye
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39
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Gurkan A, Ayabakan S, Yalcin O. A case of true hermaphroditism diagnosed at laparotomy. Eur J Surg 1994; 160:249-50. [PMID: 8049318] [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] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- A Gurkan
- Department of Surgery, SSK Hospital, Manisa, Turkey
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