1
|
Yilmaz O, Okullu SO, Catakci M, Elmas MA, Pinheiro Y, Arbak S, Demir E, Schaefer KH, Kolgazi M. Akkermansia muciniphila improves chronic colitis-induced enteric neuroinflammation in mice. Neurogastroenterol Motil 2024; 36:e14745. [PMID: 38263790 DOI: 10.1111/nmo.14745] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 08/03/2023] [Accepted: 08/29/2023] [Indexed: 01/25/2024]
Abstract
BACKGROUND Inflammatory bowel diseases (IBD) are chronic diseases that are not fully understood. Drugs in use can only be applied for a short time due to their side effects. Therefore, research is needed to develop new treatment approaches. In addition, it has been proven that IBD causes degeneration in the enteric nervous system (ENS). In recent years, it has been discussed that probiotics may have positive effects in the prevention and treatment of inflammatory enteric degeneration. Akkermansia muciniphila (A. muciniphila) is an anaerobic bacterium found in the mucin layer of the intestinal microbiota. It has been found that the population of A. muciniphila decreases in the case of different diseases. In light of this information, the curative effect of A. muciniphila application on colitis-induced inflammation and enteric degeneration was investigated. METHODS In this study, 5 weeks of A. muciniphila treatment in Trinitro-benzene-sulfonic acid (TNBS)-induced chronic colitis model was investigated. Colon samples were examined at microscopic, biochemical, and molecular levels. Fecal samples were collected before, during, and after treatment to evaluate the population changes in the microbiota. Specific proteins secreted from the ENS were evaluated, and enteric degeneration was examined. RESULTS As a result of the research, the ameliorative effects of A. muciniphila were shown in the TNBS colitis model-induced inflammation and ENS damage. DISCUSSION In light of these results, A. muciniphila can potentially be evaluated as a microbiome-based treatment for IBD with further clinical and experimental studies.
Collapse
Affiliation(s)
- Ozgur Yilmaz
- Department of Physiology, Institute of Health Sciences, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Sinem Oktem Okullu
- Department of Microbiology, School of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Merve Catakci
- Department of Physiology, Institute of Health Sciences, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Merve Acikel Elmas
- Department of Histology and Embryology, School of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Yuri Pinheiro
- Research Unit of Comparative Microbiome Analysis, Helmholtz Zentrum Muenchen, Munich, Germany
| | - Serap Arbak
- Department of Histology and Embryology, School of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| | - Ekin Demir
- Department of Surgery, School of Medicine Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Karl Herbert Schaefer
- Research and Transfer Working Group Enteric Nervous System (AGENS), University of Applied Sciences Kaiserslautern, Zweibrücken, Germany
| | - Meltem Kolgazi
- Department of Physiology, Institute of Health Sciences, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
- Department of Physiology, School of Medicine, Acibadem Mehmet Ali Aydinlar University, Istanbul, Turkey
| |
Collapse
|
2
|
Oruc I, Delavari P, Ozturan G, Yuan L, Yilmaz O. Poster Session I: Leveraging AI to accelerate scientific discoveries. J Vis 2023; 23:35. [PMID: 38109613 DOI: 10.1167/jov.23.15.35] [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: 12/20/2023] Open
Abstract
We introduce a structured approach that leverages AI to accelerate scientific discoveries. We showcase the efficacy of this technique via a proof-of-concept study identifying markers of sex in retinal images. Our methodology consists of four stages: In Phase 1, CNN development, we train a VGG model to recognize patient sex from retinal images. Phase 2, Inspiration, involves reviewing post-hoc interpretation tools' visualizations to draw observations and formulate exploratory hypotheses regarding the CNN model's decision process. This yielded 14 testable hypotheses related to potential variances in vasculature and optic disc. In Phase 3, Exploration, we test these hypotheses on an independent dataset, of which nine demonstrated significant differences. In Phase 4, Verification, five out of nine these nine hypotheses are re-tested on a new dataset, verifying five of them: significantly greater length, more nodes and branches of retinal vasculature, a larger area covered by vessels in the superior temporal quadrant, and a darker peri-papillary region in male eyes. Finally, we conducted a psychophysical study and trained a group of ophthalmologists (N=26) to identify these new retinal features for sex classification. Their performance, initially on par with chance and a non-expert group (N=31), significantly improved post-training (p<.001, d=2.63). These outcomes illustrate the potential of our methodology in leveraging AI applications for retinal biomarker discovery.
Collapse
|
3
|
Nezir AE, Bolat ZB, Ozturk N, Kocak P, Zemheri E, Gulyuz S, Ozkose UU, Yilmaz O, Vural I, Bozkır A, Sahin F, Telci D. Targeting prostate cancer with docetaxel-loaded peptide 563-conjugated PEtOx-co-PEI 30%-b-PCL polymeric micelle nanocarriers. Amino Acids 2023; 55:1023-1037. [PMID: 37318626 DOI: 10.1007/s00726-023-03292-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 06/05/2023] [Indexed: 06/16/2023]
Abstract
Prostate cancer is a global disease that negatively affects the quality of life. Although various strategies against prostate cancer have been developed, only a few achieved tumor-specific targeting. Therefore, a special emphasis has been placed on the treatment of cancer using nano-carrier-encapsulated chemotherapeutic agents conjugated with tumor-homing peptides. The targeting strategy coupling the drugs with nanotechnology helps to overcome the most common barriers, such as high toxicity and side effects. Prostate-specific membrane antigen has emerged as a promising target molecule for prostate cancer and shown to be targeted with high affinity by GRFLTGGTGRLLRIS peptide known as peptide 563 (P563). Here, we aimed to assess the in vitro and in vivo targeting efficiency, safety, and efficacy of P563-conjugated, docetaxel (DTX)-loaded polymeric micelle nanoparticles (P563-PEtOx-co-PEI30%-b-PCL-DTX) against prostate cancer. To this end, we analyzed the cytotoxic activity of P563-PEtOx-co-PEI30%-b-PCL and P563-PEtOx-co-PEI30%-b-PCL-DTX by a cell proliferation assay using PNT1A and 22Rv1 cells. We have also determined the targeting selectivity of P563-PEtOx-co-PEI30%-b-PCL-FITC by flow cytometry and assessed the induction of cell death by western blot and TUNEL assays for P563-PEtOx-co-PEI30%-b-PCL-DTX in 22Rv1 cells. To investigate the in vivo efficacy, we administered DTX in the free form or in polymeric micelle nanoparticles to athymic CD-1 nu/nu mice 22Rv1 xenograft models and performed histopathological analyses. Our study showed that targeting prostate cancer with P563-conjugated PEtOx-co-PEI30%-b-PCL polymeric micelles could exert a potent anti-cancer activity with low side effects.
Collapse
Affiliation(s)
- Ayca Ece Nezir
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Inonu Mahallesi, Kayisdagi Caddesi, Atasehir, 34755, Istanbul, Turkey
| | - Zeynep Busra Bolat
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Inonu Mahallesi, Kayisdagi Caddesi, Atasehir, 34755, Istanbul, Turkey
- Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, Kucukcekmece, 34303, Istanbul, Turkey
| | - Naile Ozturk
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Sihhiye, 06100, Ankara, Turkey
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Inonu University, Battalgazi, 44280, Malatya, Turkey
| | - Polen Kocak
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Inonu Mahallesi, Kayisdagi Caddesi, Atasehir, 34755, Istanbul, Turkey
| | - Ebru Zemheri
- Department of Pathology, Umraniye Training and Research Hospital, University of Health Sciences, Umraniye, Istanbul, Turkey
| | - Sevgi Gulyuz
- Materials Institute, Marmara Research Center, TUBITAK, Gebze, Turkey
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, Turkey
| | - Umut Ugur Ozkose
- Materials Institute, Marmara Research Center, TUBITAK, Gebze, Turkey
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, Turkey
- Department of Chemistry, Faculty of Science and Letters, Piri Reis University, Tuzla, Istanbul, Turkey
| | - Ozgur Yilmaz
- Materials Institute, Marmara Research Center, TUBITAK, Gebze, Turkey
| | - Imran Vural
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Sihhiye, 06100, Ankara, Turkey
| | - Asuman Bozkır
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Yeni Mahalle, 06560, Ankara, Turkey
| | - Fikrettin Sahin
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Inonu Mahallesi, Kayisdagi Caddesi, Atasehir, 34755, Istanbul, Turkey
| | - Dilek Telci
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Inonu Mahallesi, Kayisdagi Caddesi, Atasehir, 34755, Istanbul, Turkey.
| |
Collapse
|
4
|
Yilmaz O, Emmert MH. Mild and Functional Group-Tolerant Aerobic N-Dealkylation of Tertiary Amines Promoted by Photoredox Catalysis. J Org Chem 2023. [PMID: 37294553 DOI: 10.1021/acs.joc.3c00656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This article describes the development of a mild method for the N-dealkylation of tertiary amines via photoredox catalysis and its application in late-stage functionalization. Using the developed method, more than 30 diverse aliphatic, aniline-type, and complex substrates are shown to undergo N-dealkylation, providing a method with broader functional group tolerance compared to methods found in the literature. The scope also includes tertiary and secondary amine molecules with complex substructures and drug substrates. Interestingly, α-oxidation to imines was observed in several cyclic substructures instead of N-dealkylation, suggesting that imines are relevant reaction intermediates.
Collapse
Affiliation(s)
- Ozgur Yilmaz
- Department of Chemistry, Faculty of Sciences, Mersin University, 33343 Mersin, Turkey
| | - Marion H Emmert
- Process Research & Development, MRL, Merck & Co., Inc., 126 E Lincoln Avenue, Rahway, New Jersey 07065, United States
| |
Collapse
|
5
|
Demirezen MU, Yilmaz O, Ince E. New models developed for detection of misconceptions in physics with artificial intelligence. Neural Comput Appl 2023. [DOI: 10.1007/s00521-023-08414-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
|
6
|
Yilmaz O. Drilling and blasting designs for parallel hole cut and V-cut method in excavation of underground coal mine galleries. Sci Rep 2023; 13:2449. [PMID: 36774372 PMCID: PMC9922253 DOI: 10.1038/s41598-023-29803-6] [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] [Received: 08/06/2022] [Accepted: 02/10/2023] [Indexed: 02/13/2023] Open
Abstract
The Karadon mine, where field studies were carried out, is located in the north west of Turkey and is considered to be a highly gaseous coal mine. Explosives and ignition systems used in underground coal mines are determined by laws, statutes, regulations and strict rules. Restrictions arising from legal requirements, such as restrictions on charging and stemming lengths and blasting agents to be used, make the use of well-known tunnel blasting techniques difficult or sometimes not possible. In such cases, the designs made with the equations given in the literature must be revised and rearranged. The objective of this study is to recommend solutions to the blasting difficulties that are encountered in gaseous underground coal mines in which there are limitations arising from legal requirements. This study summarizes and analyses the blasting practices currently employed at Karadon mine along with their disadvantages. New blasting designs were then made using the methods suggested in the literature, and these designs were revised according to legal requirements. By keeping the charge concentration constant relative to its original value, the burden and spacing distances were adjusted. As a result of this study, it has been seen that rearrangement by keeping the charge concentration constant compared to its original value is an appropriate engineering solution.
Collapse
Affiliation(s)
- Ozgur Yilmaz
- Department of Mining and Mineral Extraction, Zonguldak Vocational School, Zonguldak Bülent Ecevit University, 67500, Zonguldak, Turkey.
| |
Collapse
|
7
|
Baysal B, Miçili S, Engür D, Akokay P, Karabulut AR, Keskinoğlu P, Yilmaz O, Kumral A. Impact of postnatal nutrition on neurodevelopmental outcome in rat model of intrauterine growth restriction. Eur Rev Med Pharmacol Sci 2022; 26:7498-7505. [PMID: 36314320 DOI: 10.26355/eurrev_202210_30020] [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: 06/16/2023]
Abstract
OBJECTIVE There are limited data on nutritional management of infants with intrauterine growth restriction (IUGR). Postnatal protein supplementation for promoting growth is a common clinical practice in neonatology. The present study aims to investigate the consequences of protein supplementation on long-term growth, brain and body weight, brain histology and behavioral outcome in a rat model of IUGR. MATERIALS AND METHODS Twenty-four IUGR-formed rat puppies and 12 healthy puppies were included in the study. IUGR model was established by low (10%) protein diet throughout pregnancy together with intraperitoneal injection of lipopolysaccharide (LPS). Pups were started to be fed with either standard protein (SP), or high protein (HP) diet until postnatal day (PN) 35. Puppies in the control group were given SP diet for 35 days. Six pups from each group were sacrificed at PN7, remaining six were evaluated by Morris water maze test between PN 30 to 35 days and then sacrificed at PN35. Histologic evaluation of brain tissue was performed at PN7 and PN35. RESULTS IUGR group displayed lower body and brain weights at PN7 when compared with control. At PN35, SP group achieved similar brain/body weight ratios with control, whereas HP group displayed lowest brain/body weight ratio. The number of TUNEL positive cells was significantly higher and myelin basic protein and oligodendrocyte marker O4 immunoreactivity were significantly lower in HP group when compared with SP at PN35. Neuronal density in prefrontal cortex and hippocampus at PN7 were similar among SP and HP groups, but significantly lower in HP group when compared with SP at PN35. SP group displayed better results in the Morris water maze test when compared with HP group. CONCLUSIONS Although postnatal HP support is associated with increase in body weight at PN35, it did not result in better brain/body weight ratios in the rat model of IUGR. In IUGR rats, HP diet was associated with increased apoptosis in brain tissue with lower neuronal density and decreased myelination when compared to SP. Furthermore, better neurodevelopmental scores were achieved by SP diet rather than HP support in IUGR.
Collapse
Affiliation(s)
- B Baysal
- Department of Neonatology, Faculty of Medicine, Istinye University, Istanbul, Turkey.
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Yilmaz O, Hayit H, Yesildal C, Yenigurbuz S, Yilmaz F, Emre Kizilkan Y. Hounsfield units: A promising non-invasive tool for diagnosing benign prostatic hyperplasia. Actas Urol Esp 2022; 46:407-412. [PMID: 35778339 DOI: 10.1016/j.acuroe.2021.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 11/25/2021] [Indexed: 12/13/2022]
Abstract
OBJECTIVE The clinical symptoms in benign prostatic hyperplasia (BPH) are directly proportional to prostate volume. We aimed to show whom and when to intervene in a noninvasive way, correlating the patient's subjective symptoms with objective diagnostic tools. MATERIAL AND METHOD International Prostate Symptom Score (IPSS) was evaluated in patients who consulted the urology outpatient clinic for the first time with lower urinary tract symptoms (LUTS). Subsequently, PSA, urea, creatinine, complete urinalysis, uroflowmetry, urinary tract ultrasound and non-contrast lower abdominal computed tomography (CT) examinations were requested. Prostate central (transitional zone) zone and peripheral zone HU scores, prostatic urethral length and bladder wall Hounsfield units (HU) scores were recorded by using computed tomography (CT). The ellipsoid formula was used for ultrasonographic and tomographic measurements of prostate size (anteroposterior diameter × transverse diameter × longitudinal diameter × 0.52). RESULTS A statistically significant negative correlation was found between the prostate peripheral zone/central zone HU ratio and the maximum flow rate measured in the uroflowmetry test. CONCLUSION This is the first study in the literature to evaluate the correlation between voiding parameters such as Qmax, Qave and IPSS scores, and prostate and bladder wall HU scores obtained by computed tomography examination in BPH patients. A significant relationship has been detected between the peripheral zone/central zone HU ratio and Q max. Additional studies with larger patient populations could better clarify the contribution of HU in the diagnosis of BPH and treatment decision making of these patients.
Collapse
Affiliation(s)
- O Yilmaz
- Universty of Health and Science Sultan Abdulhamid Han Training and Research Hospital Istanbul, Estambul, Turkey.
| | - H Hayit
- Universty of Health and Science Sultan Abdulhamid Han Training and Research Hospital Istanbul, Estambul, Turkey
| | - C Yesildal
- Universty of Health and Science Sultan Abdulhamid Han Training and Research Hospital Istanbul, Estambul, Turkey
| | - S Yenigurbuz
- Universty of Health and Science Sultan Abdulhamid Han Training and Research Hospital Istanbul, Estambul, Turkey
| | - F Yilmaz
- Universty of Health and Science Sultan Abdulhamid Han Training and Research Hospital Istanbul, Estambul, Turkey
| | - Y Emre Kizilkan
- Universty of Health and Science Sultan Abdulhamid Han Training and Research Hospital Istanbul, Estambul, Turkey
| |
Collapse
|
9
|
Yilmaz O, Hayit H, Yesildal C, Yenigurbuz S, Yilmaz F, Kizilkan YE. Unidades Hounsfield: una herramienta no invasiva prometedora para el diagnóstico de la hiperplasia benigna de próstata. Actas Urol Esp 2022. [DOI: 10.1016/j.acuro.2021.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
10
|
Safak T, Yilmaz O, Risvanli A, Akdeniz-Incili C. Hematological, serum biochemical results, and treatment approach of an Arabian mare with squamous cell carcinoma of the vulva - case report. ARQ BRAS MED VET ZOO 2022. [DOI: 10.1590/1678-4162-12632] [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: 11/22/2022] Open
Abstract
ABSTRACT A 20-year-old Arabian mare, was brought to the obstetrics and gynecology clinic with the complaint of an unknown wound in the genital area. Although the mare's general condition was good, examination of the genital area revealed a wide-open wound in the vulva and posterior vagina, characterized by fibrotic growth. The biopsy sample was sent to the pathology laboratory. A diagnosis of squamous cell carcinoma (SCC) was made after histopathological examination. Blood samples for serum biochemistry and hematological tests were collected from the jugular vein. Hematological and serum biochemical findings are generally used to diagnose diseases in animals and humans. Hematological and serum biochemical findings are important with genital SCC. Therefore, the findings of these values are given in this case report.
Collapse
|
11
|
Sarıkaya Solak S, Kara Polat A, Kilic S, Oguz Topal I, Saricaoglu H, Karadag AS, Canpolat F, Kartal SP, Deveci BN, Kacar N, Polat Ekinci A, Guner R, Polat M, Dogan G, Guler Ozden M, Bulbul Baskan E, Ozaydin Yavuz G, Adisen E, Gulekon A, Tanribilir ME, Yilmaz O, Akman Karakas A, Ozturk P, Didar Balci D, Gonulal M, Yondem H, Turel Ermertcan A, Sendur N, Topyildiz H, Korkmaz S, Alpsoy E. Clinical characteristics, quality of life and risk factors for severity in palmoplantar pustulosis: a cross-sectional, multicentre study of 263 patients. Clin Exp Dermatol 2021; 47:63-71. [PMID: 34236713 DOI: 10.1111/ced.14829] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 07/06/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Palmoplantar pustulosis (PPP) is a rare, chronic, inflammatory skin disease characterized by sterile pustules on palmar or plantar areas. Data on PPP are scarce. AIM To investigate the clinical characteristics and risk factors for disease severity in a large cohort of Turkish patients with PPP. METHODS We conducted a cross-sectional, multicentre study of patients with PPP recruited from 21 tertiary centres across Turkey. RESULTS In total, 263 patients (165 women, 98 men) were evaluated. Most patients (75.6%) were former or current smokers. The mean Palmoplantar Pustulosis Area and Severity Index (PPPASI) was 8.70 ± 8.06 and the mean Dermatology Life Quality Index (DLQI) score was 6.87 ± 6.08, and these scores were significantly correlated (r = 0.52, P < 0.001). Regression analysis showed that current smoking was significantly associated with increased PPPASI (P = 0.03). Coexisting psoriasis vulgaris (PsV) was reported by 70 (26.6%) patients. Male sex prevalence, PPP onset incidence, disease duration, DLQI, and prevalence of nail involvement and psoriatic arthritis (PsA) were significantly increased among patients with PPP with PsV. Of the 263 patients, 18 (6.8%) had paradoxical PPP induced by biologic therapy, and these patients had significantly increased mean DLQI and prevalence of PsA (r = 0.03, P = 0.001). CONCLUSION Our data suggest that smoking is a risk factor for both PPP development and disease severity. Patients with PPP with PsV present distinct clinical features and patients with biologic therapy-induced paradoxical PPP have reduced quality of life and are more likely to have PsA.
Collapse
Affiliation(s)
- S Sarıkaya Solak
- Departments of Dermatology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - A Kara Polat
- Medical Biostatistics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - S Kilic
- Department of Dermatology, Istanbul Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - I Oguz Topal
- Department of Dermatology, Faculty of Medicine, Canakkale Onsekiz Mart University, Canakkale, Turkey
| | - H Saricaoglu
- Department of Dermatology, Prof Dr Cemil Tascioglu City Hospital, University of Health Sciences, Istanbul, Turkey
| | - A S Karadag
- Department of Dermatology, Faculty of Medicine, Bursa Uludag University, Bursa, Turkey
| | - F Canpolat
- Department of Dermatology, Memorial Atasehir Hospital, Istanbul, Turkey
| | - S P Kartal
- Department of Dermatology, Memorial Atasehir Hospital, Istanbul, Turkey
| | - B N Deveci
- Department of Dermatology, Memorial Atasehir Hospital, Istanbul, Turkey
| | - N Kacar
- Department of Dermatology, Ankara Diskapi Yildirim Beyazit Training and Research Hospital, University of Health Sciences Turkey, Ankara, Turkey
| | - A Polat Ekinci
- Department of Dermatology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - R Guner
- Department of Dermatology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - M Polat
- Department of Dermatology, Faculty of Medicine, Sivas Cumhuriyet University, Sivas, Turkey
| | - G Dogan
- Department of Dermatology, Faculty of Medicine, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - M Guler Ozden
- Department of Dermatology, Faculty of Medicine, Mugla, Mugla Sitki Kocman University, Mugla, Turkey
| | - E Bulbul Baskan
- Department of Dermatology, Prof Dr Cemil Tascioglu City Hospital, University of Health Sciences, Istanbul, Turkey
| | - G Ozaydin Yavuz
- Department of Dermatology, Faculty of Medicine, Samsun Ondokuz Mayis University, Samsun, Turkey
| | - E Adisen
- Department of Dermatology, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey
| | - A Gulekon
- Department of Dermatology, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey
| | - M E Tanribilir
- Department of Dermatology, Faculty of Medicine, Van Yuzuncu Yil University, Van, Turkey
| | - O Yilmaz
- Department of Dermatology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - A Akman Karakas
- Department of Dermatology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - P Ozturk
- Department of Dermatology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - D Didar Balci
- Department of Dermatology, Faculty of Medicine, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey
| | - M Gonulal
- Department of Dermatology, Faculty of Medicine, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey
| | - H Yondem
- Departments of Dermatology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - A Turel Ermertcan
- Department of Dermatology, University of Health Sciences, Izmir Tepecik Training and Research Hospital, Izmir, Turkey
| | - N Sendur
- Department of Dermatology, Faculty of Medicine, Manisa Celal Bayar University, Manisa, Turkey
| | - H Topyildiz
- Department of Dermatology, Medicana International Hospital, Izmir, Turkey
| | - S Korkmaz
- Department of Dermatology, Faculty of Medicine, Aydin Adnan Menderes University, Aydin, Turkey
| | - E Alpsoy
- Department of Dermatology, Faculty of Medicine, Gazi University, Ankara, Turkey
| |
Collapse
|
12
|
Ozkose UU, Gulyuz S, Parlak Khalily M, Ozcubukcu S, Bozkir A, Tasdelen MA, Alpturk O, Yilmaz O. The synthesis of peptide‐conjugated poly(2‐ethyl‐2‐oxazoline)‐
b
‐poly(L‐lactide) (
PEtOx‐
b
‐PLA
) polymeric systems through the combination of controlled polymerization techniques and click reactions. J Appl Polym Sci 2021. [DOI: 10.1002/app.50286] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Umut Ugur Ozkose
- Materials Institute Marmara Research Center Kocaeli Turkey
- Department of Chemistry, Faculty of Science and Letters Istanbul Technical University Istanbul Turkey
- Department of Chemistry, Faculty of Science and Letters Piri Reis University Istanbul Turkey
| | - Sevgi Gulyuz
- Materials Institute Marmara Research Center Kocaeli Turkey
- Department of Chemistry, Faculty of Science and Letters Istanbul Technical University Istanbul Turkey
| | - Melek Parlak Khalily
- Department of Chemistry, Faculty of Science and Letters Yozgat Bozok University Yozgat Turkey
| | - Salih Ozcubukcu
- Department of Chemistry, Faculty of Science Middle East Technical University Ankara Turkey
| | - Asuman Bozkir
- Department of Pharmaceutical Technology, Faculty of Pharmacy Ankara University Ankara Turkey
| | - Mehmet Atilla Tasdelen
- Department of Polymer Engineering, Faculty of Engineering Yalova University Yalova Turkey
| | - Onur Alpturk
- Department of Chemistry, Faculty of Science and Letters Istanbul Technical University Istanbul Turkey
| | - Ozgur Yilmaz
- Materials Institute Marmara Research Center Kocaeli Turkey
| |
Collapse
|
13
|
Devrim B, Bolat ZB, Telci D, Şahin F, Gulyuz S, Ozkose UU, Yilmaz O, Bozkır A. Design and evaluation of peptide-18-targeted nanoliposomes constructed by poly(2-oxazoline)-DOPE for doxorubicin delivery. J Microencapsul 2021; 38:285-297. [PMID: 33853478 DOI: 10.1080/02652048.2021.1905094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
AIMS The aim of this study is to develop targeted nanoliposome formulations to provide efficient treatment for breast cancer. In this study, peptide 18-modified poly(2-ethyl-2-oxazoline)-dioleoylphosphatidylethanolamine (P18-PEtOx-DOPE), was synthesised to construct nanoliposomes. METHODS Doxorubicin (DOX) was encapsulated into the nanoliposomes by ethanol injection method. Particle size and polydispersity index were measured by dynamic light scattering. Zeta potential was determined by electrophoretic laser Doppler anemometry. The shape of the nanoliposomes was examined by transmission electron microscope. Specific bindings of P18-PEtOx-DOPE nanoliposomes were demonstrated on AU565 cells by confocal microscopy and flow cytometry studies. RESULTS DOX-loaded nanoliposomes with particle diameter of 150.00 ± 2.84 nm and PDI of 0.212 ± 0.013 were obtained. PEtOx-DOPE and PEtOx-DOPE nanoliposomes are non-toxic on HUVEC, HEK293 and hMSC cells for 48 h. Furthermore, P18-PEtOx-DOPE nanoliposomes demonstrated specificity towards AU565 cells with high binding affinity. CONCLUSIONS As a result, DOX-loaded P18-PEtOx-DOPE nanoliposomes can serve as favourable candidates in breast cancer targeted therapy.
Collapse
Affiliation(s)
- Burcu Devrim
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Zeynep Busra Bolat
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey.,Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, Istanbul, Turkey
| | - Dilek Telci
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Fikrettin Şahin
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Sevgi Gulyuz
- Marmara Research Center, TUBITAK, Materials Institution, Gebze, Turkey.,Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Istanbul, Maslak, Turkey
| | - Umut Ugur Ozkose
- Marmara Research Center, TUBITAK, Materials Institution, Gebze, Turkey.,Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Istanbul, Maslak, Turkey.,Department of Chemistry, Faculty of Science and Letters, Piri Reis University, Istanbul, Turkey
| | - Ozgur Yilmaz
- Marmara Research Center, TUBITAK, Materials Institution, Gebze, Turkey
| | - Asuman Bozkır
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| |
Collapse
|
14
|
Oz UC, Bolat ZB, Ozkose UU, Gulyuz S, Kucukturkmen B, Khalily MP, Ozcubukcu S, Yilmaz O, Telci D, Esendagli G, Sahin F, Bozkir A. A robust optimization approach for the breast cancer targeted design of PEtOx-b-PLA polymersomes. Mater Sci Eng C Mater Biol Appl 2021; 123:111929. [PMID: 33812571 DOI: 10.1016/j.msec.2021.111929] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/19/2021] [Accepted: 01/29/2021] [Indexed: 02/06/2023]
Abstract
The equipping of nanoparticles with the peptide moiety recognizing a particular receptor, enables cell or tissue-specific targeting, therefore the optimization of the targeted nanoparticles is a key factor in the formulation design process. In this paper, we report the optimization concept of Doxorubicin encapsulating PEtOx-b-PLA polymersome formulation equipped with Peptide18, which is a breast cancer recognizing tumor homing peptide, and the unveiling of the cell-specific delivery potential. The most dominant formulation parameters, which are the polymer to Doxorubicin mass ratio (w/w) and the aqueous to organic phase ratio (v/v), were optimized using Central Composite Design (CCD) based Response Surface Methodology. The characteristics of optimum polymersome formulation were determined as the hydrodynamic diameter of 146.35 nm, the PDI value of 0.136, and the encapsulation efficiency of 57.11% and TEM imaging, which are in agreement with the DLS data, showed the spherical morphology of the polymersomes. In order to demonstrate the breast cancer-specific delivery of targeted polymersomes, the flow cytometry and confocal microscopy analyses were carried out. The targeted polymersomes were accumulated 8 times higher in AU565 cells compared to MCF10A cells and the intracellular Doxorubicin was almost 10 times higher in AU565 cells. The CCD-mediated optimized targeted polymersomes proposed in this report holds the promise of targeted therapy for breast cancer and can be potentially used for the development of novel treatments.
Collapse
Affiliation(s)
- Umut Can Oz
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Yenimahalle, 06560, Ankara, Turkey
| | - Zeynep Busra Bolat
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, 26 Agustos Campus, 34755 Istanbul, Turkey; Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, Kucukcekmece, 34303, Istanbul, Turkey
| | - Umut Ugur Ozkose
- Materials Institute, Marmara Research Center, TUBITAK, Gebze 41470, Kocaeli, Turkey; Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak 34469, Istanbul, Turkey; Department of Chemistry, Faculty of Science and Letters, Piri Reis University, Tuzla, 34940, Istanbul, Turkey
| | - Sevgi Gulyuz
- Materials Institute, Marmara Research Center, TUBITAK, Gebze 41470, Kocaeli, Turkey; Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak 34469, Istanbul, Turkey
| | - Berrin Kucukturkmen
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Yenimahalle, 06560, Ankara, Turkey
| | - Melek Parlak Khalily
- Department of Chemistry, Faculty of Science and Letters, Yozgat Bozok University, Yozgat 66200, Turkey
| | - Salih Ozcubukcu
- Department of Chemistry, Faculty of Science, Middle East Technical University, Ankara 06800, Turkey
| | - Ozgur Yilmaz
- Materials Institute, Marmara Research Center, TUBITAK, Gebze 41470, Kocaeli, Turkey
| | - Dilek Telci
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, 26 Agustos Campus, 34755 Istanbul, Turkey
| | - Gunes Esendagli
- Department of Basic Oncology, Cancer Institute, Hacettepe University, Sihhiye, 06100, Ankara, Turkey
| | - Fikrettin Sahin
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, 26 Agustos Campus, 34755 Istanbul, Turkey
| | - Asuman Bozkir
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Yenimahalle, 06560, Ankara, Turkey.
| |
Collapse
|
15
|
Abstract
This manuscript details the development of a general and mild protocol for the α-C-H cyanation of tertiary amines and its application in late-stage functionalization. Suitable substrates include tertiary aliphatic, benzylic, and aniline-type substrates and complex substrates. Functional groups tolerated under the reaction conditions include various heterocycles and ketones, amides, olefins, and alkynes. This broad substrate scope is remarkable, as comparable reaction protocols for α-C-H cyanation frequently occur via free radical mechanisms and are thus fundamentally limited in their functional group tolerance. In contrast, the presented catalyst system tolerates functional groups that typically react with free radicals, suggesting an alternative reaction pathway. All components of the described catalyst system are readily available, allowing implementation of the presented methodology without the need for lengthy catalyst synthesis.
Collapse
Affiliation(s)
- Ozgur Yilmaz
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, Massachusetts 01609, United States.,Department of Chemistry, Faculty of Arts and Sciences, Mersin University, 33343 Mersin, Turkey
| | - Cagatay Dengiz
- Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
| | - Marion H Emmert
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, 100 Institute Road, Worcester, Massachusetts 01609, United States.,Process Research & Development, MRL, Merck & Co. Inc, 770 Sumneytown Pike, West Point, Pennsylvania 19486, United States
| |
Collapse
|
16
|
Yilmaz O, Narin Tongal S, Tunca S, Yuksel H. P014 Are lower respiratory tract symptoms different in children with high immunoreactive trypsinogen levels? J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01041-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
17
|
Gulyuz S, Ozkose UU, Parlak Khalily M, Kesici MS, Kocak P, Bolat ZB, Kara A, Ozturk N, Özçubukçu S, Bozkir A, Alpturk O, Telci D, Sahin F, Vural I, Yilmaz O. Poly(2-ethyl-2-oxazoline- co-ethyleneimine)- block-poly(ε-caprolactone) based micelles: synthesis, characterization, peptide conjugation and cytotoxic activity. NEW J CHEM 2021. [DOI: 10.1039/d1nj01647d] [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: 11/21/2022]
Abstract
Here we present self-assembled polymeric micelles as potential delivery systems for therapeutic agents with highly tunable properties.
Collapse
|
18
|
Kocak P, Oz UC, Bolat ZB, Ozkose UU, Gulyuz S, Tasdelen MA, Yilmaz O, Bozkir A, Sahin F, Telci D. The Utilization of Poly(2-ethyl-2-oxazoline)-b-Poly(ε-caprolactone) Ellipsoidal Particles for Intracellular BIKDDA Delivery to Prostate Cancer. Macromol Biosci 2020; 21:e2000287. [PMID: 33191572 DOI: 10.1002/mabi.202000287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/08/2020] [Indexed: 11/10/2022]
Abstract
Prostate cancer is the most common cancer, which is about 15-20% among male cancers worldwide. As most common strategies such as radiotherapy, chemotherapy, or surgery alone can be unsuccessful in the treatment of prostate cancer, this study aims to develop a new approach to deliver newly generated proapoptotic gene, BIKDDA, to androgen independent prostate cancer cells, 22RV1, using new generation nanocarriers called ellipsoids. As far as it is known, this is the first study that assesses the ability of proapoptotic gene BIKDDA to induce apoptosis in prostate cancer cell. BIKDDA encapsulating PEtOx-b-PCL-based ellipsoids are fabricated by solvent-switch method, and their morphology, size, and BIKDDA content are characterized. Gene delivery efficiency of BIKDDA loaded PEtOx-b-PCL ellipsoids is demonstrated by analysis of BIK mRNA expression with real-time PCR. The apoptotic effect of PEtOx-b-PCL ellipsoids loaded with BIKDDA (EPs-BIKDDA) on 22RV1 is shown by Annexin V staining. The obtained results demonstrate that the treatment of 22RV1 cells with EPs-BIKDDA can significantly increase BIK mRNA levels by 4.5-fold leading to cell death. This study not only represents BIKDDA as a potential therapeutic strategy in prostate cancer but also the capacity of ellipsoids as promising in vivo gene delivery vehicles.
Collapse
Affiliation(s)
- Polen Kocak
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, 26 Agustos Campus, Istanbul, 34755, Turkey
| | - Umut Can Oz
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Yenimahalle, Ankara, 06560, Turkey
| | - Zeynep Busra Bolat
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, 26 Agustos Campus, Istanbul, 34755, Turkey.,Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, Kucukcekmece, Istanbul, 34303, Turkey
| | - Umut Ugur Ozkose
- U. U. Ozkose, S. Gulyuz, Dr. O. Yilmaz, Materials Institute, Marmara Research Center, TUBITAK, Gebze, Kocaeli, 41470, Turkey.,Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, 34469, Turkey.,Department of Chemistry, Faculty of Science and Letters, Piri Reis University, Tuzla, Istanbul, 34940, Turkey
| | - Sevgi Gulyuz
- U. U. Ozkose, S. Gulyuz, Dr. O. Yilmaz, Materials Institute, Marmara Research Center, TUBITAK, Gebze, Kocaeli, 41470, Turkey.,Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, 34469, Turkey
| | - Mehmet Atilla Tasdelen
- Department of Polymer Engineering, Faculty of Engineering, Yalova University, Yalova, 77200, Turkey
| | - Ozgur Yilmaz
- U. U. Ozkose, S. Gulyuz, Dr. O. Yilmaz, Materials Institute, Marmara Research Center, TUBITAK, Gebze, Kocaeli, 41470, Turkey
| | - Asuman Bozkir
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Yenimahalle, Ankara, 06560, Turkey
| | - Fikrettin Sahin
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, 26 Agustos Campus, Istanbul, 34755, Turkey
| | - Dilek Telci
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, 26 Agustos Campus, Istanbul, 34755, Turkey
| |
Collapse
|
19
|
Akcay M, Coksevim M, Gedikli O, Ulubasoglu H, Yilmaz O. Does arterial stiffness increase in patients with early surgical menopause? Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3182] [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
Introduction
Surgical early menopause is early menopause due to medical reasons rather than the natural aging process. Pulse wave velocity (PWV) and augmentation index (AIx) are simple and non-invasive parameters for assessment of arterial stiffness. The aim of this study investigated the arterial stiffness in the surgical early menopause patients.
Method
We included 40 patient early surgical menopause and 40 control group patients with clinically and demographically similar characteristics. Oscillometric measurement method with Mobil-O-Graph 24h-ABPM NG® arteriography was used to measure the arterial stiffness and cardiovascular hemodynamic parameters.
Results
Of the 40 patients who underwent surgical early menopause, 27 (67.5%) had malignancy, 11 (27.5%) with myoma and 2 (5%) with bleeding. There were no differences in baseline demographic, laboratory, echocardiographic parameters and coronary artery disease risk factors.In terms of arterial stiffness parameters, PWV were significantly higher in the early surgical menopause group than in the control group (6.5±0.8; 5.6±1.2 p<0.001), but there was no statistically significant difference in Alx (28.3±10.9; 27.4±9.0 p=0.69).Also, there was no statistically significant difference in terms of cardiac hemodynamic parameters and central aortic pressures.
Conclusion
When arterial stiffness is noninvasively evaluated by oscillometric method, it is significantly increased in surgical early menopause patients independent of other risk factors.
Funding Acknowledgement
Type of funding source: None
Collapse
Affiliation(s)
- M Akcay
- Ondokuz Mayis University, Faculty of Medicine, Department of Cardiology, Samsun, Turkey
| | - M Coksevim
- Ondokuz Mayis University, Faculty of Medicine, Department of Cardiology, Samsun, Turkey
| | - O Gedikli
- Ondokuz Mayis University, Faculty of Medicine, Department of Cardiology, Samsun, Turkey
| | - H Ulubasoglu
- Samsun Education and Research Hospital, Department of Obstetrics and Gynaecology, Samsun, Turkey
| | - O Yilmaz
- Ondokuz Mayis University, Faculty of Medicine, Department of Cardiology, Samsun, Turkey
| |
Collapse
|
20
|
Yilmaz O, Demircioğlu İ. Morphometric analysis and three-dimensional computed tomography reconstruction of the long bones of femoral and crural regions in Van cats. Folia Morphol (Warsz) 2020; 80:186-195. [PMID: 32964410 DOI: 10.5603/fm.a2020.0116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 07/24/2020] [Accepted: 09/06/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND This study was conducted to determine the morphometric features and to make the three-dimensional (3D) reconstruction of the images obtained by computed tomography (CT) of the main long bones (femur, tibia, fibula) in Van cats, and to reveal the biometric differences between these measurement values of both sexual dimorphism and homotypic variations. MATERIALS AND METHODS A total of 16 adult Van cats, 8 male and 8 female, were used in the study. The pelvic limb long bones of the cats, which were anesthetized with the ketamine-xylazine combination, were scanned with a CT device and their images were obtained. These images were converted to a 3D structure by means of MIMICS 20.1 (The Materialise Group, Leuven, Belgium) software programme. Then, morphometric, volumetric, surface arae measurements of these bones were calculated and statistical analyses were performed. RESULTS In the analysis, it was observed that right greatest length (GL), left GL, right greatest length from caput ossis femoris (GLc), left greatest breadth of the distal end (Bd), right volume (V), and left V measurement values of the femur; left GL1, right greatest breadth of the proximal end (Bp), right Bd, left Bd, right smallest breadth of the diaphysis (SD), right V, left V, and right surface area (SA) measurement values of the tibia; right V, left V, right SA, and left SA measurement values of the fibula were statistically significantly higher in male cats than in female cats (p < 0.05). The volume and surface area measurement values of the femur, tibia and fibula of male and female cats were determined as 8.57 ± 1.33 cm3 and 7.00 ± 0.49 cm3, 64.28 ± 6.72 cm2 and 59.42 ± 4.72 cm2; 7.56 ± 1.28 cm3 and 6.15 ± 0.52 cm3, 56.89 ± 6.47 cm2 and 52.72 ± 3.15 cm2; 1.10 ± 0.17 cm3 and 0.83 ± 0.05 cm3, 14.18 ± 1.61 cm2 and 11.95 ± 0.48 cm2, respectively. CONCLUSIONS The statistical differences between the sexes in terms of the measurement parameters of the femur, tibia and fibula in adult Van cats were determined. We believe that these differences can be used in determining morphological variations of Van cats. In addition, it is thought that the data obtained from the present study would be beneficial to veterinary physicians in the clinical application areas in order to evaluate the pathological conditions related to these bones and to the studies in the field of zooarchaeology.
Collapse
Affiliation(s)
- O Yilmaz
- University of Van Yüzüncü Yıl, University of Van Yüzüncü Yıl, Faculty of Veterinary Medicine, Department of Anatomy, 65080, Zeve Campus/Van, TURKEY, 65080 VAN, Turkey.
| | - İ Demircioğlu
- Department of Anatomy, Faculty of Medicine, Harran University, Şanliurfa, Turkey, Turkey
| |
Collapse
|
21
|
Yilmaz O, Yilmaz E. Supplemental oxygen in COVID-19: a friend or foe? Clin Med (Lond) 2020; 20:e137. [PMID: 32934055 DOI: 10.7861/clinmed.let.20.5.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Ozgur Yilmaz
- Anadolu University Primary Care Center, Eskişehir, Turkey
| | - Evrim Yilmaz
- Eskişehir Osmangazi University, Eskişehir, Turkey
| |
Collapse
|
22
|
Gulnar A, Altintas SH, Yilmaz O, Ates G. Rehabilitation of the completely edentulous young patient with the "Malo Bridge": A case report. Niger J Clin Pract 2020; 23:1328-1331. [PMID: 32913176 DOI: 10.4103/njcp.njcp_170_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
It is possible to rehabilitate fully edentulous patients with implantsupported fixed or removable prostheses; however, implantsupported fixed prostheses are the gold standard for patients who not prefer to use removable dentures. This case report, prosthetic rehabilitation of a completely edentulous young patient with an implantsupported fixed hybrid prosthesis using the "Malo Bridge" technique is described. A 18 years old male patient was referred to the clinic with complaints of tooth loss, aesthetics, function, and phonetic. A total of 5 implants were placed in both the jaws. Considering that screw holes may cause aesthetic problems due to the Class III occlusion, these problems have been solved with the implant-supported hybrid prosthesis called Malo bridge. With the Malo Bridge design, the patient's aesthetic, functional and phonetic loss was eliminated, patient comfort and quality of life were improved, and patient expectations were met. It is a viable treatment option to rehabilitate completely edentulous jaws with a cross relationship and increase interarch distance using Malo Bridge to support a fixed prosthesis.
Collapse
Affiliation(s)
- A Gulnar
- Department of Prosthodontics, Faculty of Dentistry, Karadeniz Teknik University, Trabzon, Turkey
| | - S H Altintas
- Department of Prosthodontics, Faculty of Dentistry, Karadeniz Teknik University, Trabzon, Turkey
| | - O Yilmaz
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Karadeniz Teknik University, Trabzon, Turkey
| | - G Ates
- Turkish Republic Ministry of Health, Directorate of Health Service, Ankara, Turkey
| |
Collapse
|
23
|
Toprak Kanık E, Yilmaz O, Ozdogru E, Alper H, Ulman C, Kanık A, Simsek Y, Yuksel H. Relevance between clinical status and exhaled molecules related to neutrophilic inflammation in pediatric cystic fibrosis. J Breath Res 2020; 14:046007. [PMID: 31896101 DOI: 10.1088/1752-7163/ab670d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Cystic fibrosis (CF) is characterized with chronic inflammation with neutrophil and related cytokines in airway secretions. We aimed to measure the levels of neutrophil related inflammatory markers as nitric oxide, IL-8, IL-17, leukotriene B4 and neutrophil elastase as well as e-cadherin in exhaled breath condensate (EBC), and to determine their relation with clinical findings. METHODS We consecutively enrolled cystic fibrosis patients into our clinics between the age of six and eighteen years who could cooperate for exhaled breath condensate to this case-control study (n = 30). The age and sex matched control group (n = 26) was enrolled. Spirometry was performed during the stable period and EBC samples were obtained for measurement of the markers. RESULTS The mean age of the subjects enrolled was 12.1(4.2) years and 40% were positive for P.Aeruginosa in sputum. Subjects who had P.Aeruginosa in sputum cultures had significantly lower FEV1, FVC and FEF 25/75 values compared to the ones without P.Aeruginosa (p = 0.002, p = 0.002 and p = 0.005 respectively). EBC neutrophil elastase levels were significantly higher in the CF patients compared to non-CF controls (3.11 ± 4.71 versus 0.90 ± 2.68, p = 0.04). Nitric oxide, IL-17, IL-8, e-cadherin, neutrophil elastase or leukotriene B4 levels in EBC of CF patients were not related to P.Aeruginosa s infection, FEV1 levels or hospital admission in the last year. CONCLUSION In our study, neutrophil elastase levels in EBC are higher in CF patients compared to non-CF controls. This is independent of acute infection and is evidence to the persistence of neutrophilic lung injury. However, EBC NO, IL-8, IL-17, e-cadherin, neutrophil elastase and leukotriene B4 levels as inflammatory markers, are not correlated with disease progression or clinical findings.
Collapse
Affiliation(s)
- E Toprak Kanık
- Celal Bayar University Medical Faculty, Pediatric Allergy and Pulmonology, Manisa, Turkey
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Gulyuz S, Bayram D, Ozkose UU, Bolat ZB, Kocak P, Saka OM, Devrim B, Parlak Khalily M, Telci D, Sahin F, Özçubukçu S, Sezer E, Tasdelen MA, Alpturk O, Bozkır A, Yilmaz O. Synthesis, biocompatibility and gene encapsulation of poly(2-Ethyl 2-Oxazoline)-dioleoyl phosphatidylethanolamine (PEtOx-DOPE) and post-modifications with peptides and fluorescent dye coumarin. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1767617] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Sevgi Gulyuz
- Materials Institution, Marmara Research Center, TUBITAK, Kocaeli, Turkey
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
| | - Duygu Bayram
- Materials Institution, Marmara Research Center, TUBITAK, Kocaeli, Turkey
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
| | - Umut Ugur Ozkose
- Materials Institution, Marmara Research Center, TUBITAK, Kocaeli, Turkey
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
- Faculty of Science and Letters, Department of Chemistry, Piri Reis University, Istanbul, Turkey
| | - Zeynep Busra Bolat
- Faculty of Engineering and Architecture, Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey
- Faculty of Engineering and Natural Sciences, Department of Molecular Biology and Genetics, Istanbul Sabahattin Zaim University, Istanbul, Turkey
| | - Polen Kocak
- Faculty of Engineering and Architecture, Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey
| | - Ongun Mehmet Saka
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara University, Ankara, Turkey
| | - Burcu Devrim
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara University, Ankara, Turkey
| | - Melek Parlak Khalily
- Faculty of Arts and Science, Department of Chemistry, Yozgat Bozok University, Yozgat, Turkey
| | - Dilek Telci
- Faculty of Engineering and Architecture, Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey
| | - Fikrettin Sahin
- Faculty of Engineering and Architecture, Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey
| | - Salih Özçubukçu
- Faculty of Arts and Science, Department of Chemistry, Middle East Technical University, Ankara, Turkey
| | - Esma Sezer
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
| | - Mehmet Atilla Tasdelen
- Faculty of Engineering, Department of Polymer Engineering, Yalova University, Yalova, Turkey
| | - Onur Alpturk
- Faculty of Science and Letters, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
| | - Asuman Bozkır
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara University, Ankara, Turkey
| | - Ozgur Yilmaz
- Materials Institution, Marmara Research Center, TUBITAK, Kocaeli, Turkey
| |
Collapse
|
25
|
Ozturk N, Kara A, Gulyuz S, Ozkose UU, Tasdelen MA, Bozkir A, Yilmaz O, Vural I. Exploiting ionisable nature of PEtOx- co-PEI to prepare pH sensitive, doxorubicin-loaded micelles. J Microencapsul 2020; 37:467-480. [PMID: 32627670 DOI: 10.1080/02652048.2020.1792566] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 10/23/2022]
Abstract
AIMS This study was conducted to evaluate block copolymers containing two different poly(ethyleneimine) (PEI) amounts, as new pH-sensitive micellar delivery systems for doxorubicin. METHODS Micelles were prepared with block copolymers consisting of poly(2-ethyl-2-oxazoline)-co-poly(ethyleneimine) (PEtOx-co-PEI) and poly(ε-caprolactone) (PCL) as hydrophilic and hydrophobic blocks, respectively. Doxorubicin loading, micelle size, pH-dependent drug release, and in vitro cytotoxicity on MCF-7 cells were investigated. RESULTS The average size of drug-loaded micelles was under 100 nm and drug loading was between 10.7% and 48.3% (w/w). pH-sensitive drug release was more pronounced (84.7% and 68.9% (w/w) of drug was released at pH 5.0 and pH 7.4, respectively) for the micelles of the copolymer with the lowest PEI amount. The cell viability of doxorubicin-loaded micelles which were prepared by the copolymer with the lowest PEI amount was 28-33% at 72 h. CONCLUSIONS PEtOx-co-PEI-b-PCL micelles of this copolymer were found to be stable and effective pH-sensitive nano-sized carriers for doxorubicin delivery.
Collapse
Affiliation(s)
- Naile Ozturk
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey.,Department of Pharmaceutical Technology, Faculty of Pharmacy, Inonu University, Malatya, Turkey
| | - Asli Kara
- Department of Medical Services and Techniques, Sungurlu Vocational High School, Hitit University, Corum, Turkey.,Department of Nanotechnology and Nanomedicine, Hacettepe University Institute of Science, Ankara, Turkey
| | - Sevgi Gulyuz
- Materials Institute, Marmara Research Center, TUBITAK, Kocaeli, Turkey.,Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Istanbul, Turkey
| | - Umut Ugur Ozkose
- Materials Institute, Marmara Research Center, TUBITAK, Kocaeli, Turkey.,Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Istanbul, Turkey.,Department of Chemistry, Faculty of Science and Letters, Piri Reis University, Istanbul, Turkey
| | - Mehmet Atilla Tasdelen
- Department of Polymer Engineering, Faculty of Engineering, Yalova University, Yalova, Turkey
| | - Asuman Bozkir
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Ozgur Yilmaz
- Materials Institute, Marmara Research Center, TUBITAK, Kocaeli, Turkey
| | - Imran Vural
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
| |
Collapse
|
26
|
Keskin M, Karlidag S, Yilmaz O, Tatlici E, Karabulut E, Apohan E, Yesilada O. Comparison of Biochemical, Antimicrobial and Cytotoxic Activities of Different Propolis Samples from Malatya and Bilecik. Rev Chim 2020. [DOI: 10.37358/rc.20.5.8144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Propolis is a resinous natural mixtures collected and produced by honey bees. It is rich in essential oils and phenolic components so it has high levels of antioxidant, antimicrobial, anti-inflammatory and anti-tumoral activity. In this study the biochemical activity of propolis extracts were determined. The antimicrobial activity and cytotoxic activity of the extracts of the nine different propolis samples were invastigated. Their antimicrobial activities were tested by microdillution metod and define as minimum inhibitory concentration (MIC). Chemical composition of extracts was determined by using GC-MS equipment. Total phenolic content and antioxidant activity of the extracts was measured. Antimicrobial and cytotoxic activity of the extracts was carried out as well. All of the extracts showed antimicrobial activity on bacteria and yeasts used. Extracts had generally lower MIC values on yeasts. Therefore, yeasts were detected as more susceptible against the propolis extracts than the bacteria. Cytotoxic activity of extract were determined aganist A549 and Beas2B cell lines and IC50 values were calculated. Ma-Arapgir had the highest cytotoxic activity on A549 and Beas2B. They were determined as 6.72 and 26.44 mg/mL, respectively. It could be concluded that propolis extracts have antimicrobial and cytotoxic activity thus, propolis could be used in the treatment of cancer.
Collapse
|
27
|
Meghelli I, Kaouadji Z, Yilmaz O, Cemal İ, Karaca O, Gaouar SBS. Morphometric characterization and estimating body weight of two Algerian camel breeds using morphometric measurements. Trop Anim Health Prod 2020; 52:2505-2512. [PMID: 32377968 DOI: 10.1007/s11250-020-02204-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 01/11/2020] [Indexed: 11/27/2022]
Abstract
This study was carried out in order to identify the body measurements of two different Dromedary camel breeds raised in Algeria. The animal material of the study consisted of a total of 115 animals belong to Steppe (n = 55) and Sahraoui (n = 60) camel breeds. Eye and coat colors along with body measurements such as head length, neck length, neck girth, tail length, distance between eyes, distance between ears, body length, withers height, chest girth, and live weight were determined. Least squares means for head length, neck length, neck girth, tail length, distance between eyes, distance between ears, body length, withers height, chest girth, and live weight are found 48.2, 116.9, 65.7, 55.6, 24.1, 22.5, 152.2, 184.5, 141.2 cm, and 217.2 kg for Steppe and 48.1, 101.2, 56.2, 51.2, 23.4, 18.3, 135.6, 167.3, 176.8 cm, and 298.9 kg for Sahraoui camel breeds, respectively. The distribution of brown and black eye colors for the Steppe camel breed is as 58.2% and 41.8%, respectively, while all of the Sahraoui camels studied had a brown eye color. The proportional distribution in terms of body color included are coffee, dark coffee, and red colors for 1.8%, 83.6%, and 14.6% in the Steppe camel and 98.3%, 1.7%, and 0.0% for the Sahraoui camel, respectively. As a result, this study concluded that the withers height and chest girth could estimate the body weight in the two breeds of camels with different ages.
Collapse
Affiliation(s)
- I Meghelli
- Laboratory Pathophysiology and Biochemistry of Nutrition (PpBioNut), Department of Biology, SNV-STU Faculty, University of Tlemcen, Chetouane, Algeria.
| | - Z Kaouadji
- Laboratory Pathophysiology and Biochemistry of Nutrition (PpBioNut), Department of Biology, SNV-STU Faculty, University of Tlemcen, Chetouane, Algeria
| | - O Yilmaz
- Faculty of Agriculture, Department of Animal Sciences, Adnan Menderes University, Aydın, Turkey
| | - İ Cemal
- Faculty of Agriculture, Department of Animal Sciences, Adnan Menderes University, Aydın, Turkey
| | - O Karaca
- Faculty of Agriculture, Department of Animal Sciences, Adnan Menderes University, Aydın, Turkey
| | - S B S Gaouar
- Laboratory Pathophysiology and Biochemistry of Nutrition (PpBioNut), Department of Biology, SNV-STU Faculty, University of Tlemcen, Chetouane, Algeria
| |
Collapse
|
28
|
Rahal O, Aissaoui C, Ata N, Yilmaz O, Cemal I, Ameur Ameur A, Gaouar SBS. Genetic characterization of four Algerian cattle breeds using microsatellite markers. Anim Biotechnol 2020; 32:699-707. [PMID: 32248741 DOI: 10.1080/10495398.2020.1746321] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 10/24/2022]
Abstract
Cattle plays a very important role in agriculture and food security in Algeria. In the present study, the genetic diversity and structure of Algerian indigenous cattle populations were evaluated by microsatellite markers. A total of 138 individuals belonging to four cattle breed populations were characterized using 22 microsatellite markers. A total of 360 alleles was detected across studied all loci. Results obtained for the mean number of alleles (16.36), expected heterozygosity (0.84) and polymorphic information content (0.82) indicated that the total analyzed populations are characterized by noticeable genetic variability. It can be said that there is a low genetic differentiation in the cattle populations studied considering obtained mean FST value (0.039). It was revealed 97.10% of the total genetic variation can be explained by genetic differences among individuals while 2.90% among populations. The structure, factorial correspondence analysis results and dendrogram showed that cattle populations studied are clustered in three groups. The present study has revealed an important knowledge about the genetic diversity and the relationship between some native cattle breeds raised in Algeria. The results showed that the breeds studied have a high genetic diversity. Moreover, it can be said that microsatellite markers used can be successfully used to determine genetic diversity and population structure in Algerian cattle breeds.
Collapse
Affiliation(s)
- O Rahal
- Department of Agronomic Sciences, El-Taref, Algeria.,Biotechnology Research Center, Constantine, Algeria
| | - C Aissaoui
- Department of Agronomic Sciences, El-Taref, Algeria
| | - N Ata
- Department of Animal Science, Faculty of Agriculture, Adnan Menderes University, Aydin, Turkey
| | - O Yilmaz
- Department of Animal Science, Faculty of Agriculture, Adnan Menderes University, Aydin, Turkey
| | - I Cemal
- Department of Animal Science, Faculty of Agriculture, Adnan Menderes University, Aydin, Turkey
| | - A Ameur Ameur
- PpBioNut Laboratory, University Abou Bekr Belkaid, Tlemcen, Algeria
| | - S B S Gaouar
- PpBioNut Laboratory, University Abou Bekr Belkaid, Tlemcen, Algeria
| |
Collapse
|
29
|
Ozkose UU, Gulyuz S, Oz UC, Tasdelen MA, Alpturk O, Bozkir A, Yilmaz O. Development of self-assembled poly(2-ethyl-2-oxazoline)-b-poly(ε-caprolactone) (PEtOx-b-PCL) copolymeric nanostructures in aqueous solution and evaluation of their morphological transitions. EXPRESS POLYM LETT 2020. [DOI: 10.3144/expresspolymlett.2020.85] [Citation(s) in RCA: 4] [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] [Indexed: 11/24/2022] Open
|
30
|
Ozkose UU, Yilmaz O, Alpturk O. Synthesis of poly(2-ethyl-2-oxazoline)-b-poly(ε-caprolactone) conjugates by a new modular strategy. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-03038-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
31
|
Yilmaz O, Tanriverdi HI, Cayirli H, Ertan P, Sencan A, Genc A, Taneli C. Successful outcomes in laparoscopic pyeloplasty using knotless self-anchoring barbed suture in children. J Pediatr Urol 2019; 15:660.e1-660.e5. [PMID: 31474504 DOI: 10.1016/j.jpurol.2019.07.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 07/31/2019] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Laparoscopic pyeloplasty for ureteropelvic junction obstruction in children has gained increasing importance over the last decade. Intracorporeal knot tying still remains a technical challenge for the surgeon. Self-anchoring suture incorporates a new concept for tissue approximation and reduces intracorporeal knot tying problems. There are very few reports on self-anchoring knotless suture and its application for laparoscopic pyeloplasty in children. We present our results of a series of consecutive children undergoing laparoscopic pyeloplasty with knotless barbed sutures. MATERIAL AND METHOD We prospectively evaluate 15 consecutive patients who underwent laparoscopic pyeloplasty with knotless barbed sutures (V-LocTM, Covidien) for ureteropelvic anastomosis. The decision of the operation was given by pediatric nephrology-urology-radiologic imaging diagnostic team, and all patients were operated by a single surgeon. Pyeloplasty was performed without pelvic reduction, and the anastomosis was made by barbed sutures using running fashion. RESULTS The mean age of the patients were 5.39 (3 months-17 years). Two cases had undergone a right-sided pyeloplasty, and thirteen had undergone a left-sided pyeloplasty. The duration of the operative procedure was 60-110 min. Neither intraoperative nor postoperative complication was encountered in any of the cases. Patients were followed by ultrasonographic evaluation. The anteroposterior diameter (AP) diameter of renal pelvis and hydronephrosis grade Society for Fetal Urology (SFU) are significantly different when compared with pre-operative and postoperative period (p = 0.001 and p = 0.001, respectively). Owing to the renal parenchymal thickness change by age pre-operative and postoperative thickness comparison is adjusted by age, because age is considered as a covariate (confounder variable). We observed statistically significant (p = 0.003) difference in parenchymal thickness in all cases. Follow-up periods of the 15 consecutive pediatric pyeloplasty cases were 6-54 months. CONCLUSION In the present study, successful outcome of the laparoscopic pyeloplasty using barbed suture was shown for the first time in children in literature. We believe that successful outcome of laparoscopic pyeloplasty could be achieved by eliminating knots and less manipulation on the wound edge also minimizes tissue injury during the procedure.
Collapse
Affiliation(s)
- O Yilmaz
- Manisa Celal Bayar University, Faculty of Medicine, Dept. of Pediatric Surgery, Manisa, Turkey.
| | - H I Tanriverdi
- Manisa Celal Bayar University, Faculty of Medicine, Dept. of Pediatric Surgery, Manisa, Turkey
| | - H Cayirli
- Ege University, Faculty of Medicine, Dept. of Pediatric Surgery, Izmir, Turkey
| | - P Ertan
- Manisa Celal Bayar University, Faculty of Medicine, Dept. of Pediatric Nephrology, Manisa, Turkey
| | - A Sencan
- Manisa Celal Bayar University, Faculty of Medicine, Dept. of Pediatric Surgery, Manisa, Turkey
| | - A Genc
- Manisa Celal Bayar University, Faculty of Medicine, Dept. of Pediatric Surgery, Manisa, Turkey
| | - C Taneli
- Manisa Celal Bayar University, Faculty of Medicine, Dept. of Pediatric Surgery, Manisa, Turkey
| |
Collapse
|
32
|
Akbas M, Koyuncu FM, Oludag Mete T, Taneli F, Ozdemir H, Yilmaz O. Serum levels of spexin are increased in the third trimester pregnancy with gestational diabetes mellitus. Gynecol Endocrinol 2019; 35:1050-1053. [PMID: 31109216 DOI: 10.1080/09513590.2019.1616690] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Spexin is a peptide that is involved in energy homeostasis and its expression is influenced by altered glucose metabolism. Gestational diabetes mellitus (GDM) is associated with increased insulin resistance (IR) and pregnancy is a progressive insulin resistant state. We hypothesized that spexin may have an effect on the pathophysiology of GDM which further could help to identify the disease. The aim of this study was to investigate spexin levels in the third trimester pregnancies with GDM and healthy controls. Thirty-nine women with GDM and 39 healthy singleton pregnancies were enrolled in this case-control study. Serum spexin concentrations were measured and correlated to biochemical and clinical parameters. Serum spexin levels were significantly higher in women with GDM (3686.25 ± 348.37 vs. 3472.33 ± 293.93 pg/ml, p=.004). Spexin levels did not differ significantly according to treatment modality. Moreover, spexin levels were significantly positively correlated with homeostasis model assessment of IR (HOMA-IR). Spexin levels were significantly higher in women with GDM and closely related to HOMA-IR in the third trimester pregnancy. This may help to better clarify the pathophysiological role of spexin in GDM.
Collapse
Affiliation(s)
- Murat Akbas
- Department of Obstetrics and Gynecology, Perinatology Division, Manisa Celal Bayar University, Manisa, Turkey
| | - Faik Mumtaz Koyuncu
- Department of Obstetrics and Gynecology, Perinatology Division, Manisa Celal Bayar University, Manisa, Turkey
| | - Tulay Oludag Mete
- Department of Obstetrics and Gynecology, Perinatology Division, Manisa Celal Bayar University, Manisa, Turkey
| | - Fatma Taneli
- Department of Clinical Biochemistry, Manisa Celal Bayar University, Manisa, Turkey
| | - Habib Ozdemir
- Department of Clinical Biochemistry, Manisa Celal Bayar University, Manisa, Turkey
| | - Ozgur Yilmaz
- Department of Obstetrics and Gynecology, Manisa State Hospital, Manisa, Turkey
| |
Collapse
|
33
|
Ediz C, Akan S, Temel CM, Tavukcu HH, Yilmaz O. ON THE ISSUE OF NECESSITY TO PERFORM THE DR-70 IMMUNOASSAY PRIOR TO PROSTATE BIOPSY IN PATIENTS WITH HIGH PROSTATE SPECIFIC ANTIGEN LEVEL AND ITS EFFICACY IN PREDICTING THE BIOPSY RESULTS. Georgian Med News 2019:22-26. [PMID: 31687943] [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: 06/10/2023]
Abstract
The aim is to discuss the contribution of the DR-70 for the patients with high PSA level and which cutofflevel of DR-70 must be consideredthe biopsy decision. 93 patients with high prostate specific antigen level were enrolled into the study. Before the prostate biopsy, total PSA (tPSA), free PSA (fPSA), free/total PSA rate (f/tPSA), PSA density (PSAD) and DR-70 levels were recorded. The patients were divided into two groups according to the pathological outcome of benign (G1) or malignant (G2). G1 and G2 were compared with Mann-Whitney U test, Spearman's rho and ROC curve for analysis. The significance level is taken as .05 for all tests. The median age of patients in G1 and G2 was 62.52 and 68.22 years, respectively. The mean PV in G1 and G2 were 52.16 and 39.6 mL, respectively. The mean tPSA, PSAD and DR-70 levels in G1 and G2 were found as 7.19 and 18.74 ng/mL, 0.14 and 0.48 ng/mL/cc and 0.44 and 0.5 µg/mL, respectively. The mean age of the patients in G2 was statistically significantly higher than G1 (p=.001).The mean PV of the patients in G2 was statistically significantly lower than G1 (p=.001).The mean PSAD of the patients in G2 was statistically significantly higher than G1 (p=.001). There was no statistically significant difference on DR-70 levelsbetween G1 and G2 (p=.38). In Spearman's rhocorrelationanalysis, there was nostatistically significant relationships between DR-70 levels and pathology results in G2 (p=.24). ROC curve of tPSA, fPSA, f/tPSA, PSAD and DR-70 levelswere evaluated. ROC curve of PSAD shows a fair discriminant power with AUC = 0.71 (95% CI: 0.607-0.828) for differentiation between PCa and benign tissue in prostate biopsy with moderate specificity and high sensitivity (62.5% and 75.7%, resp., cut-off level: 0.1377 ng/mL). Contrary to literature and guidelines, cutoff level of PSAD as 0.13ng/mL/cc should be kept in mind and accordingly, a biopsy decision should be made. We think that DR-70 is no needed for additional evaluation before prostate biopsy.
Collapse
Affiliation(s)
- C Ediz
- Sultan Abdulhamid Han Education and Research Hospital, Department of Urology, Istanbul, Turkey
| | - S Akan
- Sultan Abdulhamid Han Education and Research Hospital, Department of Urology, Istanbul, Turkey
| | - C M Temel
- Sultan Abdulhamid Han Education and Research Hospital, Department of Urology, Istanbul, Turkey
| | - H H Tavukcu
- Sultan Abdulhamid Han Education and Research Hospital, Department of Urology, Istanbul, Turkey
| | - O Yilmaz
- Sultan Abdulhamid Han Education and Research Hospital, Department of Urology, Istanbul, Turkey
| |
Collapse
|
34
|
Saygin B, Esrefoglu M, Bayindir N, Tok OE, Selek S, Bulut H, Ozer OF, Ozturk A, Yilmaz O, Meydan S. Protection with thymoquinone against formaldehyde-induced neurotoxicity in the rats. BRATISL MED J 2019; 119:726-730. [PMID: 30686007 DOI: 10.4149/bll_2018_129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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
INTRODUCTION This study aimed to investigate the neurotoxic damage of formaldehyde (FA), which is commonly used in medicine and industrial fields, for the hippocampus of rats and the protective role of thymoquinone (TQ) against this neurotoxicity. METHODS There were five groups with eight rats in each. Two control groups were formed, in one of them physiological saline was applied and in the other one corn oil was applied. FA was injected in Group 3. Group 4 was exposed to FA and TQ simultaneously. Group 5 received TQ only. At the end of the experiment animals were sacrificed and brain tissues were removed for biochemical and histopathological investigation. RESULTS catalase (CAT), glutathione peroxidase (GSH-px) and superoxide dismutase (SOD), all known as enzymes with antioxidant activities, were increased in FA and TQ simultaneously administered group. FA caused prominent subarachnoidal hemorrhage and vacuolization. Vacuolization was not observed but occasional subarachnoidal hemorrhage was detected in the FA+TQ group. CONCLUSION Neurotoxic damage in hippocampus induced by FA was reverted by administration of TQ (Tab. 1, Fig. 1, Ref. 26).
Collapse
|
35
|
Abstract
OBJECTIVES Dysphagia is described as a geriatric syndrome that occurs more frequently with aging. It is associated with the deterioration in functionality however, it is usually ignored. Frailty is a geriatric syndrome that is recognized more with its well-known adverse consequences. Very recently, dysphagia has been suggested to accompany frailty in older adults. We aimed to investigate the association between dysphagia and frailty in the community dwelling older adults. DESIGN Prospective, cross-sectional study. SETTING Geriatric outpatient clinic. PARTICIPANTS Older adults aged ≥60 years. MEASUREMENTS Dysphagia was evaluated by EAT-10 questionnaire and frailty by FRAIL scale. Handgrip strength (HGS) was evaluated by hand-dynamometer. Gait speed was evaluated by 4-meter usual gait speed (UGS). Nutritional status was assessed by mini-nutritional assessment-short form (MNA-SF). RESULTS 1138 patients were enrolled. Mean age was 74.1±7.3 years. EAT-10 questionnaire was answered by all and FRAIL-scale by 851 subjects. EAT-10 score >15 points was regarded as significant dysphagia risk. The participants with EAT-10>15 points were older when compared to the participants with EAT-10<=15 points (p=0.002). Among participants with EAT-10>15 points, women gender and neurodegenerative diseases were more prevalent (p=0.04, p=0.002; respectively); number of chronic diseases, number of drugs and FRAIL score were higher (p=0.001 for each), and HGS, UGS, MNA-SF scores were lower (p=0.002, p=0.01, p<0.001; respectively). In multivariate analyses, the factors independently associated with presence of EAT-10 score>15 were FRAIL score and the number of drugs. CONCLUSION Dysphagia is associated with frailty irrespective to age, presence of neurodegenerative diseases, number of chronic diseases and drugs. To our knowledge, this is the largest serie in the literature providing data on independent association of dysphagia with frailty.
Collapse
Affiliation(s)
- G Bahat
- Gulistan Bahat, Istanbul University Istanbul Medical School Department of Internal Medicine Division of Geriatrics, Istanbul, Turkey
| | | | | | | | | | | |
Collapse
|
36
|
Bulut N, Aydin G, Gürbüz IA, Karaduman A, Topaloğlu H, Yilmaz O. DUCHENNE MUSCULAR DYSTROPHY - PHYSIOTHERAPY. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.358] [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: 11/26/2022]
|
37
|
Tagiyev A, Bulut N, Aydin G, Alemdaroğlu Gürbüz I, Eroğlu N, Yilmaz O, Haliloğlu G, Karaduman A, Topaloğlu H. SMA THERAPIES I. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
38
|
|
39
|
Bahat G, Yilmaz O, Kilic C, Oren M, Karan M. Performance of SARC-F Turkish in regard to sarcopenia definitions, muscle mass and functional measures. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1656] [Citation(s) in RCA: 1] [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: 11/30/2022]
|
40
|
Eris S, Kucukdagli P, Turkmen B, Bahat G, Yilmaz O, Karan M. Obesity and sarcopenic obesity in community-dwelling older adults. Clin Nutr 2018. [DOI: 10.1016/j.clnu.2018.06.1658] [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: 10/28/2022]
|
41
|
Yilmaz O, Oderinde MS, Emmert MH. Photoredox-Catalyzed C α-H Cyanation of Unactivated Secondary and Tertiary Aliphatic Amines: Late-Stage Functionalization and Mechanistic Studies. J Org Chem 2018; 83:11089-11100. [PMID: 30160970 DOI: 10.1021/acs.joc.8b01700] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This paper describes the development and mechanistic studies of a general, high-yielding amine Cα-H cyanation protocol via photoredox catalysis. Inexpensive NaCN is employed as the cyanide source and air is the external oxidant, resulting in mild and highly functional group tolerant conditions. Notably, efficient Cα-H cyanations of secondary and tertiary aliphatic amines and of complex, biologically active compounds (drugs) can be performed using the established methodology. Mechanistic studies suggest that the carboxylic acid additive has three effects: formation of a stabilizing hemiaminal intermediate, prevention of catalyst decomposition by protonating the substrate, and modulation of fluorescence quenching of the photoexcited catalyst species.
Collapse
Affiliation(s)
- Ozgur Yilmaz
- Department of Chemistry and Biochemistry , Worcester Polytechnic Institute , 100 Institute Road , Worcester , Massachusetts 01609 , United States
| | - Martins S Oderinde
- Medicine Design & Oncology, Medicinal Chemistry, Pfizer, Inc., Groton , Connecticut 06340 , United States
| | - Marion H Emmert
- Department of Chemistry and Biochemistry , Worcester Polytechnic Institute , 100 Institute Road , Worcester , Massachusetts 01609 , United States
| |
Collapse
|
42
|
Kara A, Ozturk N, Esendagli G, Ozkose UU, Gulyuz S, Yilmaz O, Telci D, Bozkir A, Vural I. Development of novel self-assembled polymeric micelles from partially hydrolysed poly(2-ethyl-2-oxazoline)-co-PEI-b-PCL block copolymer as non-viral vectors for plasmid DNA in vitro transfection. Artificial Cells, Nanomedicine, and Biotechnology 2018; 46:S264-S273. [DOI: 10.1080/21691401.2018.1491478] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Asli Kara
- Department of Biology, Faculty of Art and Science, Hitit University, Corum, Turkey
- Department of Nanotechnology and Nanomedicine, Hacettepe University Institute of Science, Ankara, Turkey
| | - Naile Ozturk
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
| | - Gunes Esendagli
- Department of Basic Oncology, Hacettepe University Cancer Institute, Ankara, Turkey
| | - Umut Ugur Ozkose
- Materials Institute, Marmara Research Center, TUBITAK, Gebze, Turkey
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Istanbul, Turkey
- Department of Chemistry, Faculty of Science and Letters, Piri Reis University, Istanbul, Turkey
| | - Sevgi Gulyuz
- Materials Institute, Marmara Research Center, TUBITAK, Gebze, Turkey
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Istanbul, Turkey
| | - Ozgur Yilmaz
- Materials Institute, Marmara Research Center, TUBITAK, Gebze, Turkey
| | - Dilek Telci
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Asuman Bozkir
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Imran Vural
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
| |
Collapse
|
43
|
Gulyuz S, Ozkose UU, Kocak P, Telci D, Yilmaz O, Tasdelen MA. In-vitro cytotoxic activities of poly(2-ethyl-2-oxazoline)-based amphiphilic block copolymers prepared by CuAAC click chemistry. EXPRESS POLYM LETT 2018. [DOI: 10.3144/expresspolymlett.2018.13] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
44
|
Abstract
OBJECTIVE To compare the diagnostic value of the SARC-F combined with calf circumference (SARC-CalF) with the standard SARC-F to screen sarcopenia in community-dwelling older adults. DESIGN Cross-sectional, diagnostic accuracy study. SETTING Geriatric outpatient clinic of a university hospital. PARTICIPANTS Older adults >= 65 years. MEASUREMENTS Muscle mass (bioimpedance analysis device), muscle strength (hand grip strength-Jamar hydraulic hand dynamometer), and physical performance (usual gait speed). Four currently used diagnostic criteria [European Working Group on Sarcopenia in Older People (EWGSOP), Foundation for the National Institutes of Health (FNIH), International Working Group on Sarcopenia (IWGS), and Society on Sarcopenia Cachexia and Wasting Disorders (SCWD) criteria] were applied. SARC-CalF was performed by using two different calf circumference threshold: standard cut-off 31 cm (SARC-CalF-31) and national cut-off 33 cm (SARC-CalF-33). The sensitivity/specificity analyses of the SARC-CalF and SARC-F tools were run. We used the receiver operating characteristics curves and the area under the receiver operating characteristics curves (AUC) to compare the diagnostic accuracy to identify sarcopenia. RESULTS We included 207 subjects; 67 male and 140 female with a mean age of 74.6±6.7 years. The prevalence of sarcopenia ranged from 1.9% to 9.2%. The sensitivity of SARC-F was between 25% (EWGSOP) and 50% (IWGS); specificity was about 82%. For SARC-CalF-31 and SARC-CalF-33 sensitivity was in general similar -between 25-50%- which pointed out that SARC-CalF was not superior to SARC-F for sensitivity in this sample. Corresponding specificities for SARC-CalF-31 and SARC-CalF-33 were higher than SARC-F and were between 90-98%. Additionally, the AUC values, which indicates the diagnostic accuracy of a screening test, were in general higher for SARC-CalF-33 than the SARC-F and SARC-CalF-31. CONCLUSIONS We reported that addition of calf circumference item to SARC-F tool improved the specificity and diagnostic accuracy of SARC-F but it did not improve the sensitivity in a community-dwelling Turkish older adult population sample that had low prevalence of sarcopenia. The performance of SARC-CalF tool to screen sarcopenia is to be studied in different populations and living settings.
Collapse
Affiliation(s)
- G Bahat
- Dr. Gülistan Bahat, MD, Istanbul University Istanbul Medical School Department of Internal Medicine Division of Geriatrics Capa, 34093, Istanbul, Turkey, Telephone: +90 212 414 20 00- 31478, 33090, Fax: +90 212 414 22 48, +90 212 532 42 08,
| | | | | | | | | | | |
Collapse
|
45
|
Yilmaz O, Mevsim V, Kuruoglu E. DEVELOPMENT OF CLINICAL RISK ASSESSMENT TOOL FOR OSTEOPOROSIS (OSTEORISKAPP) USING A SYNDROMIC APPROACH. Acta Endocrinol (Buchar) 2018; 14:133-141. [PMID: 31149249 PMCID: PMC6516599 DOI: 10.4183/aeb.2018.133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
CONTEXT DEXA is recommended for osteoporosis screening. However, the rate of screening with DEXA is very low. Therefore, methods that can be used more easily and cost effectively are needed. OBJECTIVE The objective of this study is to develop a clinical risk assessment tool of osteoporosis (OSTEORISKAPP) by using syndromic approach. DESIGN A methodological study was performed. SUBJECTS AND METHODS Three hundred and fifty-six participants who are above 50 years old are participants of study and take history and physical examination. Positive likelihood ratio (LR), pre and post test probability, is calculated. A logistic regression analysis and a ROC analysis are made with the model constructed by those criteria. RESULTS Eighteen different clinical risk indices are diagnosed. According to LR, 4 of these criteria are minimally effective, 11 of them are weakly effective and 3 of them are medium effective criteria According to results of logistic regression analysis, back pain, waist pain, and usage of cortisone for more than 3 months, vertebra tenderness in physical examination, having dorsal kyphosis and being obese are turned out to be statistically significant in 89.9% confidence interval. AUC is found to be 0.948 and diagnostic test is found to have perfect distinction ability. CONCLUSION Syndromic diagnostic criteria that will be used for osteoporosis screening of population and that is cost effective, no need to refer, practical, reliable and has tried to be developed.
Collapse
Affiliation(s)
- O. Yilmaz
- Arpaçay Family Health Center, Kars, “Dokuz Eylul” University Faculty of Medicine, Izmir, Turkey
| | | | | |
Collapse
|
46
|
Abstract
OBJECTIVE To assess the reliability and validity of Turkish version of SARC-F in regard to screening with current definitions of sarcopenia, muscle mass and functional measures. DESIGN Cross-sectional study. PARTICIPANTS Community-dwelling older adults aged >=65 years admitting to a geriatric outpatient clinic. MEASUREMENTS Muscle mass (bioimpedance analysis), handgrip strength, usual gait speed, chair sit-to-stand test, functional reach test, short physical performance battery, SARC-F questionnaire, FRAIL questionnaire Sarcopenia was evaluated with 4 current different definitions: European Working Group on Sarcopenia in Older People's (EWGSOP); Foundation for the National Institutes of Health (FNIH), International Working Group on Sarcopenia (IWGS) and Society on Sarcopenia, Cachexia and Wasting Disorders (SCWD). RESULTS After cross-cultural adaptation, 207 subjects were analysed in the clinical validation study. Mean age was 74.6±6.7 years, 67.6% were women. Against EWGSOP, FNIH, IWGS and SCWD definitions of sarcopenia, sensitivity of SARC-F were %25, 31.6%, 50% and 40%; specificity were 81.4%, 82.4%, 81.8% and 81.7%, respectively. Positive predictive values were between 5.1-15.4% and negative predictive values were 92.3-98.2%. Against parameters of low muscle mass, sensitivity were about 20% and specificity were about 81%. Against parameters of function; for low hand grip strength, sensitivity of SARC-F were 33.7% (for Turkish cut-off); 50% (for FNIH cut-off); specificity were 93.7% (for Turkish cut-off) and 85.8% (for FNIH cut-off). Against low UGS, poor performance in chair sit to stand test, functional reach test, SPPB and presence of positive frailty screening sensitivity were 58.3%, 39.2%, 59.1%, 55.2% and 52.1% while specificity were 97.3%, 97.8%, 88.1%, 99.3% and 91.2%, respectively. CONCLUSION The psychometric performance of Turkish SARC-F was similar to the original SARC-F. It revealed low sensitivity but high specificity with all sarcopenia definitions. Sensitivity and specificity were higher for muscle function tests reflecting its inquiry and input on functional measures. Our findings suggest that SARC-F is an excellent test to exclude muscle function impairment and sarcopenia. SARC-F is relatively a good screening test for functional measures.
Collapse
Affiliation(s)
- G Bahat
- Prof. Dr. Gülistan Bahat, MD, Istanbul University Istanbul Medical School Department of Internal Medicine Division of Geriatrics Capa, 34093, Istanbul, Turkey, Telephone: +90 212 414 20 00- 31478, 33090, Fax:+90 212 414 22 48; +90 212 532 42 08, E-mail:
| | | | | | | | | |
Collapse
|
47
|
Borazan A, Camsari T, Cavdar Z, Sarioglu S, Yilmaz O, Oktay G, Sifil A, Celik A, Cavdar C, Aysal A, Kolatan E. The Effects of Darbepoetin on Peritoneal Fibrosis Induced by Chemical Peritonitis and on Peritoneal Tissue Mmp-2 and Timp-2 Levels in Rats. EUR J INFLAMM 2017. [DOI: 10.1177/1721727x0900700205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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] Open
Abstract
The aim of this study is to assess the influence of darbepoetin on the development of peritoneal fibrosis in rats induced by Chlorhexidine gluconate (0.1%) and ethanol (15%) and to determine the effect on peritoneal tissue levels of MMP–2 and TIMP–2, possible important factors in progression of peritoneal fibrosis. Twenty-four female Wistar albino rats were divided into three groups. The first group (CH group) received 3 ml/200g daily intraperitoneal injections of Chlorhexidine gluconate (0.1%) and ethanol (15%) dissolved in saline to induce chemical peritonitis; group 2 (ESA group) received 3 ml/200g daily injections of Chlorhexidine gluconate (0.1%) and ethanol (15%) dissolved in saline and also darbepoetin 12.5 microgr/ per kilogram/ day subcutaneously on the first and seventh days; group 3 (Control group) received intraperitoneal 0.9% saline (3 ml/200g/d) through the right lower quadrant by 21 gauge needle. The study duration was fourteen days. On the fifteenth day rats were sacrificed, parietal peritoneum samples were obtained from the left anterior abdominal wall. Pathological samples were examined using Hematoxyline & Eosin (HE) stains. The thickness, vasculpathy, and inflammation were determined by light microscopy. MMP-2 and TIMP-2 were studied immunohistochemically by monoclonal antibody staining. The activity of MMP-2 on peritoneal tissue was studied by gelatin zymography and TIMP–2 protein level was analysed by ELISA, biochemically. The decrease in thickness of parietal peritoneum in group ESA was statistically significant when compared to CH group (p<0.05). Inflammation scores, and vascularization score surfaces were not statistically different between these groups (p>0.05). Immunohistochemically, darbepoetin was shown to decrease MMP-2 expression on parietal peritoneum in CH group (p<0.05), but had no effect on TIMP-2 (p>0.05). Biochemically the ratio of active MMP–2 to proMMP–2 was more significantly increased in the ESA group than in the CH group (p<0.001), however, TIMP- 2 levels in both groups were decreased compared to the control group (p<0.05). Darbepoetin histopathologically reduced peritoneal fibrosis induced by Chlorhexidine gluconate. We can suggest that Darbepoetin does not cause peritoneal fibrosis and may prevent peritoneal fibrosis in rats possibly related to an effect on MMP-2 expression. Further research regarding the utility and dosage should be considered.
Collapse
Affiliation(s)
- A. Borazan
- Department of Nephrology, Faculty of Medicine, Mustafa Kemal University, Hatay
| | - T. Camsari
- Department of Nephrology, Research Center, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Z. Cavdar
- Department of Biochemistry, Research Center, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - S. Sarioglu
- Department of Pathology, Research Center, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - O. Yilmaz
- Department of Animal Research Center, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - G. Oktay
- Department of Biochemistry, Research Center, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - A. Sifil
- Department of Nephrology, Research Center, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - A. Celik
- Department of Nephrology, Research Center, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - C. Cavdar
- Department of Nephrology, Research Center, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - A. Aysal
- Department of Pathology, Research Center, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - E. Kolatan
- Department of Animal Research Center, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| |
Collapse
|
48
|
Arıkan-Ayyıldız Z, Karaman M, Özbal S, Bağrıyanık A, Yilmaz O, Karaman Ö, Uzuner N. Efficacy of parthenolide on lung histopathology in a murine model of asthma. Allergol Immunopathol (Madr) 2017; 45:63-68. [PMID: 27717727 DOI: 10.1016/j.aller.2016.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 06/09/2016] [Accepted: 06/22/2016] [Indexed: 01/15/2023]
Abstract
BACKGROUND Parthenolide is the active constituent of the plant 'Tanacetum parthenium' (Feverfew) which has been used for centuries as a folk remedy for inflammatory conditions. AIM OF THE STUDY In this study we aimed to investigate the effects of parthenolide in a murine model of chronic asthma. MATERIALS AND METHODS Thirty-five BALB/c mice were divided into five groups; I (control), II (placebo), III (dexamethasone), IV (parthenolide) and V (dexamethasone and parthenolide combination). Lung histology was evaluated after treatment with the study drugs. Levels of interleukin (IL)-4 and IL-5 were determined by ELISA. RESULTS Histologic parameters except the number of mast and goblet cells improved in the parthenolide group when compared with placebo. All parameters except basal membrane thickness and number of mast cells were improved significantly better in the group receiving dexamethasone when compared with the parthenolide group. Improvement of most of the histologic parameters was similar in Groups III and V. Interleukin-4 levels were significantly reduced in the parthenolide group when compared to the placebo group. CONCLUSION We demonstrated that parthenolide administration alleviated some of the pathological changes in asthma. But parthenolide alone is not efficient as dexamethasone therapy and the parthenolide and dexamethasone combination also did not add any beneficial effect to the dexamethasone treatment.
Collapse
|
49
|
Calan M, Kume T, Yilmaz O, Arkan T, Kocabas GU, Dokuzlar O, Aygün K, Oktan MA, Danıs N, Temur M. A possible link between luteinizing hormone and macrophage migration inhibitory factor levels in polycystic ovary syndrome. Endocr Res 2016; 41:261-9. [PMID: 26913980 DOI: 10.3109/07435800.2015.1135442] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
PURPOSE Macrophage migration inhibitory factor (MIF) is a multifunctional cytokine that plays a role in metabolic and inflammatory processes. Increasing evidence suggests that there is a link between MIF and ovulation. We aimed to evaluate plasma MIF levels in women with polycystic ovary syndrome (PCOS) and to determine whether MIF levels differ between the follicular phase and mid-cycle of the menstrual cycle in eumenorrheic women. METHODS Ninety women with PCOS and 80 age- and BMI-matched healthy eumenorrheic women were consecutively recruited into this prospective observational study. For all subjects, plasma MIF levels in the early follicular phase were measured by ELISA; for the 40 healthy controls, MIF levels were also measured during mid-cycle of the same menstrual cycle. RESULTS Plasma MIF levels were significantly higher in women with PCOS than in eumenorrheic women (14.16 ± 1.59 vs. 10.39 ± 0.70 ng/ml; p < 0.001). MIF levels were significantly higher at mid-cycle than in the follicular phase in eumenorrheic women (11.15 ± 0.61 vs. 10.56 ± 0.82 ng/ml; p < 0.001). MIF was positively correlated with BMI, high sensitivity C-reactive protein (hs-CRP), and homeostasis model assessment of insulin resistance (HOMA-IR) in both groups. MIF was positively correlated with luteinizing hormone (LH) and free-testosterone only in the PCOS group. Binary logistic regression analyses revealed that the odds ratio (OR) for PCOS independently increases linearly with elevated MIF (OR = 1.385, 95% CI = 1.087-1.764, p = 0.017). CONCLUSION MIF may play a crucial role in the reproductive system in women, including the development of PCOS and normal ovulation.
Collapse
Affiliation(s)
- Mehmet Calan
- a Division of Endocrinology and Metabolism, Department of Internal Medicine , Dokuz Eylul University Medical School , Izmir , Turkey
| | - Tuncay Kume
- b Department of Medical Biochemistry , Dokuz Eylul University Medical School , Izmir , Turkey
| | - Ozgur Yilmaz
- c Department of Obstetrics and Gynecology , Manisa Merkezefendi Hospital , Manisa , Turkey
| | - Tugba Arkan
- a Division of Endocrinology and Metabolism, Department of Internal Medicine , Dokuz Eylul University Medical School , Izmir , Turkey
| | - Gokcen Unal Kocabas
- d Division of Endocrinology and Metabolism, Department of Internal Medicine , Izmir Bozyaka Training and Research Hospital , Izmir , Turkey
| | - Ozge Dokuzlar
- e Department of Internal Medicine , Dokuz Eylul University Medical School , Izmir , Turkey
| | - Kemal Aygün
- e Department of Internal Medicine , Dokuz Eylul University Medical School , Izmir , Turkey
| | - Mehmet Asi Oktan
- e Department of Internal Medicine , Dokuz Eylul University Medical School , Izmir , Turkey
| | - Nilay Danıs
- e Department of Internal Medicine , Dokuz Eylul University Medical School , Izmir , Turkey
| | - Muzaffer Temur
- c Department of Obstetrics and Gynecology , Manisa Merkezefendi Hospital , Manisa , Turkey
| |
Collapse
|
50
|
Kume T, Calan M, Yilmaz O, Kocabas GU, Yesil P, Temur M, Bicer M, Calan OG. A possible connection between tumor necrosis factor alpha and adropin levels in polycystic ovary syndrome. J Endocrinol Invest 2016; 39:747-54. [PMID: 26969461 DOI: 10.1007/s40618-016-0453-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 02/22/2016] [Indexed: 12/29/2022]
Abstract
CONTEXT Adropin is a peptide hormone implicated in the regulation of insulin sensitivity and energy homeostasis. Polycystic ovary syndrome (PCOS) is a metabolic and reproductive disease associated with insulin resistance. It has been demonstrated that various inflammatory markers increased in PCOS including TNF-α. TNF-α regulates the secretion of certain peptides which play a crucial role in glucose and lipid homeostasis. There is also some evidence of a link between TNF-α and adropin. OBJECTIVE To ascertain whether there is an association between circulating adropin levels and TNF-α in PCOS. PATIENTS AND DESIGN 152 women with PCOS and 152 age- and body mass index-matched controls without PCOS were recruited for this cross-sectional study. MAIN OUTCOME MEASURES Adropin and TNF-α levels were measured using ELISA. RESULTS Adropin levels were lower in the PCOS group compared with the control group (7.43 ± 0.79 vs. 9.42 ± 0.76 ng/ml, P < 0.001), whereas TNF-α levels were higher (49.93 ± 3.39 vs. 35.83 ± 2.47 pg/ml, P < 0.001). A strongly negative correlation was found between circulating adropin levels and TNF-α levels in women with PCOS (r = -0.407, P < 0.001). Binary logistic regression analysis revealed that decreased adropin levels were significantly associated with high odds of having PCOS, although, after adjustment for TNF-α, this link vanished. Additionally, multiple linear regression analysis showed that HOMA-IR and TFN-α independently predicted adropin levels. CONCLUSIONS Serum adropin levels are significantly decreased in PCOS and are inversely associated with TNF-α. Further dissection of the nature of this association can open new therapeutic options for metabolic diseases.
Collapse
Affiliation(s)
- T Kume
- Department of Biochemistry and Clinical Biochemistry, Dokuz Eylul University Faculty of Medicine, 35340, Inciralti, Izmir, Turkey
| | - M Calan
- Division of Endocrinology and Metabolism (PCOS Research Group), Department of Internal Medicine, Dokuz Eylul University Faculty of Medicine, 35340, Inciralti, Izmir, Turkey.
| | - O Yilmaz
- Department of Obstetrics and Gynecology, Manisa Merkezefendi State Hospital, 45020, Merkezefendi, Manisa, Turkey
| | - G U Kocabas
- Division of Endocrinology and Metabolism, Department of Internal Medicine (PCOS Research Group), Izmir Bozyaka Training and Research Hospital, 35170, Bozyaka, Izmir, Turkey
| | - P Yesil
- Department of Bioengineering, Ege University, 35100, Bornova, Izmir, Turkey
| | - M Temur
- Department of Obstetrics and Gynecology, Manisa Merkezefendi State Hospital, 45020, Merkezefendi, Manisa, Turkey
| | - M Bicer
- Department of Obstetrics and Gynecology, Medical Park Hospital, Izmir University Faculty of Medicine, 35575, Izmir, Turkey
| | - O G Calan
- Department of Biochemistry and Clinical Biochemistry, Dokuz Eylul University Faculty of Medicine, 35340, Inciralti, Izmir, Turkey
| |
Collapse
|