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Çam SB, Çiftci E, Gürbüz N, Altun B, Korkusuz P. Allogeneic bone marrow mesenchymal stem cell-derived exosomes alleviate human hypoxic AKI-on-a-Chip within a tight treatment window. Stem Cell Res Ther 2024; 15:105. [PMID: 38600585 PMCID: PMC11005291 DOI: 10.1186/s13287-024-03674-8] [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: 12/01/2023] [Accepted: 02/20/2024] [Indexed: 04/12/2024] Open
Abstract
BACKGROUND Acute hypoxic proximal tubule (PT) injury and subsequent maladaptive repair present high mortality and increased risk of acute kidney injury (AKI) - chronic kidney disease (CKD) transition. Human bone marrow mesenchymal stem cell-derived exosomes (hBMMSC-Exos) as potential cell therapeutics can be translated into clinics if drawbacks on safety and efficacy are clarified. Here, we determined the real-time effective dose and treatment window of allogeneic hBMMSC-Exos, evaluated their performance on the structural and functional integrity of 3D microfluidic acute hypoxic PT injury platform. METHODS hBMMSC-Exos were isolated and characterized. Real-time impedance-based cell proliferation analysis (RTCA) determined the effective dose and treatment window for acute hypoxic PT injury. A 2-lane 3D gravity-driven microfluidic platform was set to mimic PT in vitro. ZO-1, acetylated α-tubulin immunolabelling, and permeability index assessed structural; cell proliferation by WST-1 measured functional integrity of PT. RESULTS hBMMSC-Exos induced PT proliferation with ED50 of 172,582 µg/ml at the 26th hour. Hypoxia significantly decreased ZO-1, increased permeability index, and decreased cell proliferation rate on 24-48 h in the microfluidic platform. hBMMSC-Exos reinforced polarity by a 1.72-fold increase in ZO-1, restored permeability by 20/45-fold against 20/155 kDa dextran and increased epithelial proliferation 3-fold compared to control. CONCLUSIONS The real-time potency assay and 3D gravity-driven microfluidic acute hypoxic PT injury platform precisely demonstrated the therapeutic performance window of allogeneic hBMMSC-Exos on ischemic AKI based on structural and functional cellular data. The novel standardized, non-invasive two-step system validates the cell-based personalized theragnostic tool in a real-time physiological microenvironment prior to safe and efficient clinical usage in nephrology.
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Affiliation(s)
- Sefa Burak Çam
- Faculty of Medicine, Dept. of Histology and Embryology, Hacettepe University, Ankara, Ankara, 06230, Turkey
| | - Eda Çiftci
- Graduate School of Science and Engineering, Department of Bioengineering, Hacettepe University, Ankara, 06230, Turkey
| | - Nazlıhan Gürbüz
- Graduate School of Science and Engineering, Department of Bioengineering, Hacettepe University, Ankara, 06230, Turkey
| | - Bülent Altun
- Faculty of Medicine, Dept. of Nephrology, Hacettepe University, Ankara, 06230, Turkey
| | - Petek Korkusuz
- Faculty of Medicine, Dept. of Histology and Embryology, Hacettepe University, Ankara, Ankara, 06230, Turkey.
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Kalfazade N, Özlü DN, Şam E, Akkaş F, Gürbüz N. Factors associated with pathological tumor stage and T3a upstage in clinical T1-2 renal cell carcinoma. Prog Urol 2023; 33:135-144. [PMID: 36604246 DOI: 10.1016/j.purol.2022.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 11/16/2022] [Accepted: 12/10/2022] [Indexed: 01/04/2023]
Abstract
INTRODUCTION Considering the oncological outcomes, understanding the preoperative factors associated with and predicting advanced stage and T3a upstage will help in risk assessment and selection of the right treatment. MATERIAL AND METHOD Patients with postoperative pathology of Renal Cell Carcinoma (RCC) and stage T1-2 N0M0 were included in the study. Demographic and pathological characteristics of the patients, Neutrophil-lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR), and De Ritis- the ratio of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were recorded. Patients were classified according to T stage (T1-2 vs T3-4) and T3a upstage (T3a upstaged vs non-T3a upstaged). RESULTS A total of 289 patients participated in the study when inclusion and exclusion criteria were applied. No difference was found between the groups in terms of age, gender, body mass index, laterality, ABO blood group, Rh positivity and comorbidities. According to multivariate analysis, PLR, AST/ALT, Fuhrman grade, open radical nephrectomy (RN) and Clear Cell pathological subtype were found to be significant-independent factors in predicting advanced stage (T3-4) and T3a upstage (P<0.05). CONCLUSION It was found that higher PLR and AST/ALT ratios were associated with more advanced stage and postoperative T3a upstage in RCC patients. In addition, these patients more frequently had open RN and had higher Fuhrman grades, while the clear cell subtype was less common.
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Affiliation(s)
- N Kalfazade
- Department of Urology, University of Health Sciences Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey.
| | - D N Özlü
- Department of Urology, University of Health Sciences Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey.
| | - E Şam
- Department of Urology, University of Health Sciences Erzurum Regional Training and Research Hospital, Erzurum, Turkey.
| | - F Akkaş
- Department of Urology, University of Health Sciences Erzurum Regional Training and Research Hospital, Erzurum, Turkey.
| | - N Gürbüz
- Department of Urology, University of Health Sciences Bakırköy Dr. Sadi Konuk Training and Research Hospital, İstanbul, Turkey.
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Hamdi N, Slimani I, Mansour L, Alresheedi F, Gürbüz N, Özdemir I. N-Heterocyclic carbene-palladium-PEPPSI complexes and their catalytic activity in the direct C–H bond activation of heteroarene derivatives with aryl bromides: synthesis, and antimicrobial and antioxidant activities. NEW J CHEM 2021. [DOI: 10.1039/d1nj04606c] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The Pd–NHC–PEPPSI complexes were used as catalysts in the direct C5-arylation of 2-acetyl furan, 2-acetylthiophene, and 2n-propylthiazole with different aryl bromides and were evaluated for their potential antibacterial and antioxidant properties.
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Affiliation(s)
- N. Hamdi
- Department of Chemistry, College of Science and Arts, Qassim University, Ar Rass, 51921 Saudi Arabia
- Research Laboratory of Environmental Sciences and Technologies (LR16ES09), Higher Institute of Environmental Sciences and Technology, University of Carthage, Hammam-Lif, Tunisia, PB 77-P.O. Box 77, 1054 Amilcar, Tunisia
| | - I. Slimani
- Research Laboratory of Environmental Sciences and Technologies (LR16ES09), Higher Institute of Environmental Sciences and Technology, University of Carthage, Hammam-Lif, Tunisia, PB 77-P.O. Box 77, 1054 Amilcar, Tunisia
| | - L. Mansour
- Zoology Department, College of Science, King Saud University, Saudi Arabia, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Faisal Alresheedi
- Department of Physics, College of Science, Qassim University, Buraidah 51452, Saudi Arabia
| | - N. Gürbüz
- İnönü University, Catalysis Research and Application Center, 44280-Malatya, Turkey
- İnönü University, Faculty of Science and Art, Department of Chemistry, 44280 Malatya, Turkey
| | - I. Özdemir
- İnönü University, Catalysis Research and Application Center, 44280-Malatya, Turkey
- İnönü University, Faculty of Science and Art, Department of Chemistry, 44280 Malatya, Turkey
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Karaca EÖ, Akkoç M, Öz E, Altin S, Dorcet V, Roisnel T, Gürbüz N, Çelik Ö, Bayri A, Bruneau C, Yaşar S, Özdemir I. Ring-expanded iridium and rhodiumN-heterocyclic carbene complexes: a comparative DFT study of heterocycle ring size and metal center diversity. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1287906] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- E. Ö. Karaca
- Department of Chemistry, İnönü University, Malatya, Turkey
| | - M. Akkoç
- Department of Chemistry, İnönü University, Malatya, Turkey
| | - E. Öz
- Department of Physics, İnönü University, Malatya, Turkey
| | - S. Altin
- Department of Physics, İnönü University, Malatya, Turkey
| | - V. Dorcet
- Université de Rennes, UMR 6226: CNRS Sciences Chimiques de Rennes, Rennes, France
| | - T. Roisnel
- Université de Rennes, UMR 6226: CNRS Sciences Chimiques de Rennes, Rennes, France
| | - N. Gürbüz
- Department of Chemistry, İnönü University, Malatya, Turkey
| | - Ö. Çelik
- Department of Physics, Dicle University, Diyarbakır, Turkey
| | - A. Bayri
- Department of Physics, İnönü University, Malatya, Turkey
| | - C. Bruneau
- Université de Rennes, UMR 6226: CNRS Sciences Chimiques de Rennes, Rennes, France
| | - S. Yaşar
- Department of Chemistry, İnönü University, Malatya, Turkey
| | - I. Özdemir
- Department of Chemistry, İnönü University, Malatya, Turkey
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Şahin O, Özcan EÖ, Gürbüz N, Özdemir İ, Büyükgüngör O. Dichlorotriethylphosphine-[N-formyl-N,N′-bis(3,4-dimethoxy)benzyl-trimethylenediamine] platinum(II). J STRUCT CHEM+ 2014. [DOI: 10.1134/s0022476614040155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Korkmaz ŞA, Karadağ A, Korkmaz N, Andaç Ö, Gürbüz N, Özdemir İ, Topkaya R. Five complexes containing N,N-bis(2-hydroxyethyl)-ethylenediamine with tetracyanidopalladate(II): synthesis, crystal structures, thermal, magnetic, and catalytic properties. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.820827] [Citation(s) in RCA: 11] [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: 10/26/2022]
Affiliation(s)
- Ş. Aslan Korkmaz
- a Aquaculture Department , Vocational College, Tunceli University , Tunceli , Turkey
| | - A. Karadağ
- b Chemistry Department , Gaziosmanpaşa University , Tokat , Turkey
| | - N. Korkmaz
- b Chemistry Department , Gaziosmanpaşa University , Tokat , Turkey
| | - Ö. Andaç
- c Chemistry Department , Ondokuz Mayıs University , Samsun , Turkey
| | - N. Gürbüz
- d Chemistry Department , İnönü University , Malatya , Turkey
| | - İ. Özdemir
- d Chemistry Department , İnönü University , Malatya , Turkey
| | - R. Topkaya
- e Physics Department , Gebze Institute of Technology , Kocaeli , Turkey
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Gürbüz N, Seçkin T, Özdemir I, Çetinkaya B. Synthesis of Ru(II) complex with 3-(4,5-dihydroimidazol-1-yl)propyltriethoxysilane containing viologen group. RUSS J COORD CHEM+ 2005. [DOI: 10.1007/s11173-005-0071-9] [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: 10/25/2022]
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Tutluoğlu B, Gürbüz N, Atiş S, Abanozlu S, Ibiş R, Kanik A. Effects of heparin on hypertonic potassium chloride-induced bronchoconstriction. Ann Pharmacother 2001; 35:1161-5. [PMID: 11675838 DOI: 10.1345/aph.10140] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Changes in bronchial osmolarity is a well-known factor for bronchoconstricion. Recenty, nonisotonic aerosols have begun to be used for the assessment of bronchial hyperreactivity. Hypertonic KCl can cause bronchoconstriction even in non-symptomatic asthmatic patients. OBJECTIVE To evaluate the protective role of heparin on hypertonic KCl-induced bronchospasm in asthma. METHODS Thirty-eight asthmatic patients were included in this double-blind, placebo-controlled study. On day 1 of the study, after performing the respiratory function test (RFT), patients had inhaled KCl 10% and RFTs were done after 20 minutes. On day 2 of the study, after the basal RFT, 18 patents inhaled NaCl 0.9% 0.2 mLkg solution. After the completion of this procedure, patients waited for 20 minutes and inhaled KCl 10% 10 mL, and RFTs were repeated 20 minutes later. The second group consisted of 20patients who inhaled heparn 1,000 units/kg after the RFTs were performed. Twenty minutes later, they inhaled KCl 10% and waited for 20 minutes. Finally, RFTs were done and compared with those from the other group. RESULTS In the control group, forced expiratory volume in one second (FEV1) decreased 17.4% on day 1 and 16.4% on day 2. In the heparin-treated group, FEV1 decreased 18.6% on day 1, but almost no change occurred after this group was treated with heparin before inhalation of hypertonic KCl on day 2. CONCLUSIONS Heparin was found to be highly protective against hypertonic KCl induced bronchospasm in bronchial asthma.
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Affiliation(s)
- B Tutluoğlu
- Cerrahpasa Faculty of Medicine, Department of Chest Diseases, Istanbul University, Turkey.
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Koltuksuz U, Mutuş HM, Kutlu R, Ozyurt H, Cetin S, Karaman A, Gürbüz N, Akyol O, Aydin NE. Effects of caffeic acid phenethyl ester and epidermal growth factor on the development of caustic esophageal stricture in rats. J Pediatr Surg 2001; 36:1504-9. [PMID: 11584397 DOI: 10.1053/jpsu.2001.27032] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND/PURPOSE An experimental study was performed to modify the healing response in caustic esophageal burns to prevent stricture development. Two different agents with different modes of actions, caffeic acid phenethyl ester (CAPE) and epidermal growth factor (EGF), were studied. CAPE has antiinflammatory, immunomodulatory, antioxidant, and antimitotic properties. EGF has known properties in supporting wound healing and in protecting esophagus from injuries. METHODS The model described by Gehanno and its modification by Liu was used to create standard esophageal burns with 50% NaOH. The study was performed with 76 rats in 4 main groups (sham, CAPE, EGF, and control) and 2 subgroups in each for 5 and 28 days of observation. Efficacy of treatment was assessed in 28-day subgroups by measuring weight gain, contrast esophagograms on day 27, histologic evaluation by measuring stenosis index (wall thickness/lumen diameter), and collagen deposition, and biochemically by determining tissue hydroxy proline (OHP) content. RESULTS In the end of the study, increase rates of mean body weights of the animals in the 28-day subgroups were as follows: sham, 30%; CAPE, 23%; EGF, 22%; and control, 14%. Although all the animals in subgroups significantly gained weight, the mean weight gain was significantly low in controls when compared with sham, CAPE, and EGF groups (P <.05). Contrast esophagograms on day 27 showed no stenosis in the sham, mild stenosis in CAPE and EGF, and severe stenosis with proximal dilatation in controls. Stenosis indices of the subgroups were as follows: sham, 0.29; CAPE, 0.41; EGF, 0.41; control, 0.84. Index was significantly higher in controls (P <.05). Collagen accumulation scores in the esophageal wall were as follows: Sham, 0.0; CAPE, 0.87; EGF, 0.30; control, 2.70. Scores also were significantly higher in controls (P <.05). Tissue (OHP) levels were as follows (mg/g dry tissue): Sham, 1.48; CAPE, 1.53; EGF, 1.90; control, 4.01. Production of OHP was significantly higher in controls. CONCLUSIONS The results of the parameters in the study indicate that administration of CAPE and EGF has beneficial effects in the prevention of caustic esophageal strictures. Those effects of CAPE may occur through its antiinflammatory, immunomodulatory, and antioxidant properties, and EGF may occur through its induced proliferative properties on the esophagus.
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Affiliation(s)
- U Koltuksuz
- Departments of Pediatric Surgery, Radiology, Biochemistry, and Pathology, Inönü University, School of Medicine, Malatya, Turkey
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Oruç S, Koyuncu F, Gürbüz N. Myxoid leiomyosarcoma of the uterus: a case report. EUR J GYNAECOL ONCOL 1999; 20:423. [PMID: 10609511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Affiliation(s)
- S Oruç
- Department of Obstetrics and Gynaecology, Celal Bayar Universit, Medical School, Manisa, Turkey
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