Browsing by Author "Ayhanci, Adnan"

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Cardioprotective effects of Hypericum triquetrifolium Turra. against cyclophosphamide related cardiotoxicity in rats
(2018) Cetik Yildiz, Songul; KESKİN, Cumali; Sahinturk, Varol; Ayhanci, Adnan
ABSTRACT: Cyclophosphamide (CYP) is commonly used as anticancer agent but its usage is limited by cardiotoxic side effects such as dose-dependent cardiac damage, morphologically defined necrosis and bleeding. Hypericum triquetrifolium Turra. (HT) shows anti-oxidative and anticarciogenic properties with its rich phenolic contents. The current study was designed to investigate the possible protective effect of HT on CYP-induced cardiotoxicity. Albino rats were randomly divided into 9 groups, each included 7 animals. Serum creatine kinase-MB (CK-MB), malondialdehyde (MDA), aspartate transaminase (AST), glutathione (GSH), total antioxidant (TAC) and total oxidant capacity (TOC) levels were investigated. Furthermore, the cardiac tissue samples were investigated histopatologically. While the levels of serum CK-MB, MDA, AST and TOC were high, the levels of serum GSH and TAC levels were low in the CYP groups. It was also observed that CYP-induced cardiotoxicity was dose dependent. In the treatment with CYP plus HT doses there was observed an essential decrease in the CYP cardiotoxicity; decreased cell damage and oxidative stress parameters and also increased GSH and TAC levels. Based on our findings, it can be proposed that HT seed methanol extract was a strong candidate in preventing the CYP-induced cardiotoxicity.
Cyclophosphamide induced oxidative stress, lipid per oxidation, apoptosis and histopathological changes in rats: Protective role of boron
(Elsevier, 2020) Cengiz, Mustafa; Şahintürk, Varol; Cetik Yildiz, Songul; Kurcanay Şahin, İlknur; Bilici, Namık; Onur Yaman, Suzan; Altuner, Yılmaz; Appak-Baskoy, Sıla; Ayhanci, Adnan
Background Cyclophosphamide (CP) is an alkylating chemotherapeutic drug used in the treatment of many types of cancer. However, as with other chemotherapeutic drugs, the use of CP is limited by the damage to healthy tissues such as testes, bladder and liver as well as cancerous tissue. Boron (B) is a trace element with many biological properties such as antioxidant, anti-apoptotic and anti-lipid per oxidation. Methods This current study aims to determine protective effects of B on CP induced testicular toxicity. The rats were divided into 4 groups (control, CP, B and B plus CP groups). The testes of experimental animals were taken for histological, apoptotic markers and biochemical analysis. Results The damage to some seminifer tubules, loss of typical appearance, thinning of seminifer epithelium and relative enlargement of the tubule lumen were watched in testis of the group that administrated CP. Moreover, Bcl-2, TAC and GSH levels decreased while TOC, OSI, MDA, Bax and Caspase-3 levels increased. On the other hand, pretreatment limited to B in the B plus CP group, testicular tissue improved. In addition, Bcl-2, GSH, TAC levels increased, Bax, MDA, TOC, OSI and caspase-3 levels decreased. Conclusion B significantly reduced testicular lipid per-oxidation and strengthened antioxidant defenses. Our results showed that pre-treatment B can protect rat testis against CP-induced testicular damage owing to its anti-lipid per oxidation, anti-oxidant and anti-apoptotic properties.
Hematoprotective Effect of N(G)-Nitro-L-Arginine Methyl Ester and Lycopene on Hematoxicity in Trinitrobenzene Sulfonic Acid–Induced Colitis in Rat
(2015) Cetik, Songul; Ayhanci, Adnan; Altuner, Yilmaz; Musmul, Ahmet; Sahinturk, Varol
Anemia is a neglected manifestation of inflammatory bowel disease (IBD) although it is commonly observed in IBD patients. Attempts to overcome anemia in IBD would help not only general well being of the patients but also minimize disease consequences. In this experimental study, the possible hematoprotective effects of lycopene and NG–nitro-L-arginine methyl ester (L-NAME) on colitis induced by TNBS were analyzed. 112 rats were assigned to 16 groups; control group, intrarectal 120 mg/kg TNBS group, intraperitoneal 40 mg/kg L-NAME group, 1 mg/kg olive oil group, 5 and 10 mg/kg lycopene groups. Each experimental group was divided into 3 subgroups according to duration of treatment. On the very first day of treatment number of erythrocytes decreased in all groups except TNBS treated group whereas leukocyte numbers increased in all groups except TNBS treated group pointing out an inflammation. The number of platelets decreased in all study groups with the exception of TNBS group. On the second day, while erythrocyte and platelet numbers increased in all but not in TNBS group, leukocytes decreased in all the groups. On the third day, erythrocyte and platelet numbers increased in all groups except for the 10 mg/kg lycopene group. While the number of leukocytes decreased in the 10 mg/kg lycopene group, it remained the same in the other groups as those observed on the second day. These results show that lycopene could have effects on hemopoiesis as well as in prevention of anemia in IBD.
A Histopathological, Immunohistochemical and Biochemical Investigation on the in vitro Antioxidant, Myeloprotective, Hematoprotective and Hepatoprotective Effects of Hypericum triquetrifolium Seed Extract Against Cyclophosphamide-Induced Toxicity
(2019) Cetik Yildiz, Songul; Keskin, Cumali; Sahinturk, Varol; Ayhanci, Adnan
The aim of this study was to investigate in vitro antioxidant properties and in vivo protective effects of the methanol extract of the Hypericum triquetrifolium Turra (HT) seed against acute hepatotoxicity, myelotoxicity and hematotoxicity in rats induced by cyclophosphamide (CP). In order to investigate in vivo protective effects of the HT extract on rat tissues, the rats were divided into nine groups. The toxic effects of CP and the protective effects of HT extract on nucleated cells that are produced by bone marrow, serum alanine transaminase (ALT), alkaline phosphatase (ALP), lactate dehydrogenase (LDH) and oxidative stress index (OSI) levels were investigated biochemically. Additionally, liver tissue samples were examined for histopathological changes and apoptosis by Bcl-2, Bax and caspase-3 immunohistochemistry. The results of this study show that HT seed methanol extract has high total phenolic content (179.52 μg GAE/mg) and antioxidant activity (87.48% in 500 μg/mL concentration). CP administration caused hepatotoxicity, myelotoxicity and hematotoxicity in the rats. Whereas, the groups of rats that were injected with different concentrations of HT (25, 50 and 100 mg/kg) and CP (150 mg/kg) showed significant protective effects on bone marrow nucleated cells and important decreases on serum ALT, ALP, LDH and OSI levels were observed when compared with the CP injected group.
In Vitro Antitumor and Antioxidant Capacity as Well as Ameliorative Effects of Fermented Kefir on Cyclophosphamide-Induced Toxicity on Cardiac and Hepatic Tissues in Rats
(Mdpi, 2024) Yildiz, Songul Cetik; Demir, Cemil; Cengiz, Mustafa; Irmak, Halit; Cengiz, Betul Peker; Ayhanci, Adnan
Fermented prebiotic and probiotic products with kefir are very important to slow down and prevent the growth of tumors and to treat cancer by stimulating the immune response against tumor cells. Cyclophosphamide (CPx) is widely preferred in cancer treatment but its effectiveness in high doses is restricted because of its side effects. The aim of this study was to investigate the protective effects of kefir against CPx-induced heart and liver toxicity. In an experiment, 42 Wistar albino rats were divided into six treatment groups: the control (Group 1), the group receiving 150 mg/kg CPx (Group 2), the groups receiving 5 and 10 mg/kg kefir (Groups 3 and 4) and the groups receiving 5 and 10 mg/kg kefir + CPx (Group 5 and 6). Fermented kefirs obtained on different days by traditional methods were mixed and given by gavage for 12 days, while a single dose of CPx was administered intraperitoneally (i.p.) on the 12th day of the experiment. It was observed that alanine transaminase (ALT), aspartate transaminase (AST), alkaline phosphatase (ALP), lactate dehydrogenase (LDH), creatinine kinase-MB (CK-MB), ischemia modified albumin (IMA) and Troponin I values, which indicate oxidative stress, increased in the CPx-administered group, and this level approached that of the control in the CPx + kefir groups. Likewise, as a result of the kefir, the rats' CPx-induced histopathological symptoms were reduced, and their heart and liver tissue were significantly improved. In conclusion, it was observed that kefir had a cytoprotective effect against CPx-induced oxidative stress, hepatotoxicity and cardiotoxicity, bringing their biochemical parameters closer to those of the control by suppressing oxidative stress and reducing tissue damage.
Investigation into the protective effects of Hypericum Triquetrifolium Turra seed against cyclophosphamide-induced testicular injury in Sprague Dawley rats
(Taylor & Francis Online, 2022) Can, Senanur; Çetik Yıldız, Songül; Keskin, Cumali; Şahintürk, Varol; Cengiz, Mustafa; Appak Başköy, Sıla; Ayhanci, Adnan; Akıncı, Gülsema
For centuries, Turkey has been a significant location here around 80 species of Hypericum with differing names widely occur, which is also known as Turkish folk medicine in treating some bacterial diseases as well as stomach and intestine inflammation. Recent studies have reported this herb family to contain numbers of bioactive compound contents. The study aims to investigate the protective effects of Hypericum triquetrifolium Turra (HT) upon oxidative stress and apoptosis in a rat model in which testes injury was induced by CP. The testicular injury was caused using CP (150 mg/kg). The rats were treated with a single dose (100 mg/kg) of methanol extract of HT to investigate various biochemical markers in the serum and plasma of blood samples apart from assessing the prognosis of CP-induced testicular damage. Added to that, histological analyses were performed to identify possible structural changes and apoptotic indicators, like Bax, Caspase-3, and Bcl-2. In CP Group, there was a rise in the levels of total oxidant status (TOS), malondialdehyde (MDA), oxidative stress index (OSI), Caspase-3, and Bax while superoxide dismutase (SOD), catalase (CAT), glutathione (GSH), Bcl-2, and total antioxidant capacity (TAC) all decreased. Also, our histological analysis showed damaged testes. On the other hand, neither biochemical nor histological analysis showed testicular damage in HT Alone Group. In CP + HT Group, a significant number of the negatives changes due to CP were observed to have improved remarkably following an HT treatment. This study results suggest that HT could help improve CP-induced testicular injury thanks to its anti-oxidative and anti-apoptotic properties.
Investigation of Uroprotective Effects of Seed Methanol Extracts of Hypericum Triquetrifolium Turra. on Cyclophosphamide-Induced Bladder Hemorrhagic Cystitis and Nephrotoxicity in Wistar Albino Rats
(Cukurova Univ, Fac Medicine, 2020) Yildiz, Songul Cetik; Keskin, Cumali; Sahinturk, Varol; Ayhanci, Adnan
Purpose: This study investigated the possible uroprotective effects of Hypericum triquetrifolium Turra. (HT) seed methanol extracts (25,50,100 mg/kg, i.p., for 6 days) against cyclophosphamide (CYP)-induced (150 mg/kg, single dose, i.p.) acute bladder hemorrhagic cystitis (HC) and nephrotoxicity in rats. Materials and Methods: Wistar albino rats used in this study were divided into nine groups, each including seven rats. Group 1 (control) was treated with 0.5ml saline (SF) and Group 2 was treated with CYP (150 mg/kg). Groups 3, 4, 5 were treated with 25, 50, 100 mg/kg HT, respectively while groups 6, 7, 8 were treated with 25, 50, 100 mg/kg CYP + HT, respectively. Finally, Group 9 (control-2) was treated with 0.5ml-%0.2 dimethyl sulfoxide (DMSO). The serum creatinine, blood urea nitrogen (BUN), superoxide dismutase (SOD) and catalase (CAT) levels were measured in blood serum. Results: The CYP-treated rats histopathologically had mild-moderate bladder and renal injuries. The serum creatinine and BUN levels, which are the biochemical markers of renal injury, significantly increased compared to the control group. Conclusion: HT showed a protective effect on CYPrelated bladder HC and nephrotoxicity in rats by inhibiting inflammation and apoptosis.
Probiyotik Kefirin Sıçanlarda Siklofosfamid Kaynaklı Nefrotoksisite ve Ürotoksisite Üzerine İmmünoterapötik ve Hücre Koruyucu Etkileri
(2024) Yıldız, Songül Çetik; Demir, Cemil; Cengiz, Mustafa; Irmak, Halit; Cengiz, Betül Peker; Ayhanci, Adnan
Doğal olarak oluşan fermente bir süt ürünü olan kefirin, sıçanlarda siklofosfamid (CP) ile indüklenen hemorajik sistit ve nefrotoksisiteye karşı antioksidan, anti-apoptotik ve anti-inflamatuar etkileri gibi farmakolojik ve terapötik niteliklerini değerlendirmek. Bu amaçla, deneysel sıçanlar 6 gruba ayrılmıştır; control (Grup 1), 150 mg/kg CP (Grup 2), 5 mg/kg kefir (Grup 3), l0 mg/kg kefir (Grup 4), 5 mg/kg kefir+150 CP (Grup 5), l0 mg/kg kefir+150 CP (Grup 6). Farklı günlerde fermente edilen kefirlerde farklılık olmadığı için 1., 2. ve 3. gün kefirleri karıştırılarak sıçanlara 12 gün boyunca verilmiş, CP ise deneyin 12. gününde tek doz ve i.p. olarak verilmiştir. Daha sonra elde edilen parametreler değerlendirilmiştir. Histolojik değerledirmeler sonucunda CP'nin böbrek ve mesane de toksisiteye neden olduğu belirlenmiştir. Öte yandan biyokimyasal değerlendirme ile CP uygulanan deney grubunda, doku toksisite belirteçleri olan serum kan üre nitrojen (BUN) ve kreatinin (Cre) seviyelerindeki önemli artış görülğrken hücre içi antioksidan sistem belirteçlerinden olan katalaz (CAT), glutatyon (GSH), superoksit dismutaz (SOD) ve glutatyon peroksidaz (GPx) düzeylerinde ise önemli azalma olduğu belirlenmiştir. Bununla birlikte, kefir (5 ve 10 mg/kg) tedavisi neticesinde meydana gelen tüm değerler tersine dönmüştür. Bu sonuçlar kefirin CP kaynaklı hemorajik sistit ve nefrotoksisiteye karşı etkili bir koruyucu olduğunu göstermiştir.
The Protection Afforded by Kefir Against Cyclophosphamide Induced Testicular Toxicity in Rats by Oxidant Antioxidant and Histopathological Evaluations
(Nature Portfolio, 2024) Yildiz, Songul Cetik; Demir, Cemil; Cengiz, Mustafa; Irmak, Halit; Cengiz, Betul Peker; Ayhanci, Adnan
Cyclophosphamide (CTX) is the most commonly used effective alkylating drug in cancer treatment, but its use is restricted because its toxic side effect causes testicular toxicity. CTX disrupts the tissue redox and antioxidant balance and the resulting tissue damage causes oxidative stress. In our study based on this problem, kefir against CTX-induced oxidative stress and testicular toxicity were investigated. Rats were divided into 6 groups: control, 150 mg/kg CTX, 5 and 10 mg/kg kefir, 5 and 10 mg/kg kefir + 150 CTX. While the fermented kefirs were mixed and given to the rats for 12 days, CTX was given as a single dose on the 12th day of the experiment. Testis was scored according to spermatid density, giant cell formation, cells shed into tubules, maturation disorder, and atrophy. According to our biochemical findings, the high levels of total oxidant status (TOS), and the low levels of total antioxidant status (TAS) in the CTX group, which are oxidative stress markers, indicate the toxic effect of CTX, while the decrease in TOS levels and the increase in TAS levels in the kefir groups indicate the protective effect of kefir. In the CTX-administered group, tubules with impaired maturation and no spermatids were observed in the transverse section of the testicle, while in the kefir groups, the presence of near-normal tubule structures and tubule lumens despite CTX showed the protective effect of kefir. In our study, it was observed that kefir had a protective and curative effect on CTX-induced toxicity and oxidative stress and could be a strong protector.
Protective Effect of Carvacrol Against Oxidative Stress and Heart Injury in Cyclophosphamide–Induced Cardiotoxicity in Rat
(2016) Cetik, Songul; Ayhanci, Adnan; Sahinturk, Varol
Possible protective effects of carvacrol (Car) against cyclophosphamide (CP)-induced cardiotoxicity was examined in this study. Experimental groups of the rats were randomly divided into 13 groups,each including seven animals: Group 1 (control) treated with saline; groups 2, 3, and 4 treated with 50, 100, or 150 mg/kg of CP, respectively; group 5 treated with 0.5 mL olive oil; groups 6 and 7 treated with 5.0 and 10 mg/kg of Car, respectively; groups 8, 9, or 10 treated with respective CP plus 5.0 mg/kg of Car; and groups 11, 12, or 13 treated with respective CP plus 10 mg/kg of Car. Serum alanine transaminase (ALT),aspartat transaminase (AST), lactate dehydrogenase (LDH), malondialdehyde (MDA),creatine kinase-MB (CK-MB), total oxidant state (TOS), oxidative stress index (OSI), and levels were high only in the CP groups. There was a dose-dependence on the CP-induced cardiotoxicity. Hemorrhage, inflammatory cell infiltration and the separation of the muscle fibers in the heart tissue supported the biochemical data. With 5.0 and 10 mg/kg Car, there was an important decrease in the CP toxicity and this was related to the oxidative and nitrosative stress in the CP-induced cardiotoxicity. Reduced inflammation and lipid peroxidation in the heart tissue and increase of serum glutathione (GSH) and total antioxidant capacity (TAS) levels were found when carvacrol was applied. Based on these findings, it could be proposed that Car was a strong candidate in preventing the CP-induced cardiotoxicity but further clinical studies should be done in order to verify its application on humans.
Protective Effect of Carvacrol Against Oxidative Stress and Heart Injury in Cyclophosphamide-Induced Cardiotoxicity in Rat
(INST TECNOLOGIA PARANA, 2015) Cetik, Songul; Ayhanci, Adnan; Sahinturk, Varol
Possible protective effects of carvacrol (Car) against cyclophosphamide (CP)-induced cardiotoxicity was examined in this study. Experimental groups of the rats were randomly divided into 13 groups, each including seven animals: Group 1 (control) treated with saline; groups 2, 3, and 4 treated with 50, 100, or 150 mg/kg of CP, respectively; group 5 treated with 0.5 mL olive oil; groups 6 and 7 treated with 5.0 and 10 mg/kg of Car, respectively; groups 8, 9, or 10 treated with respective CP plus 5.0 mg/kg of Car; and groups 11, 12, or 13 treated with respective CP plus 10 mg/kg of Car. Serum alanine transaminase (ALT), aspartat transaminase (AST), lactate dehydrogenase (LDH), malondialdehyde (MDA), creatine kinase-MB (CK-MB), total oxidant state (TOS), oxidative stress index (OSI), and levels were high only in the CP groups. There was a dose-dependence on the CP-induced cardiotoxicity. Hemorrhage, inflammatory cell infiltration and the separation of the muscle fibers in the heart tissue supported the biochemical data. With 5.0 and 10 mg/kg Car, there was an important decrease in the CP toxicity and this was related to the oxidative and nitrosative stress in the CP-induced cardiotoxicity. Reduced inflammation and lipid peroxidation in the heart tissue and increase of serum glutathione (GSH) and total antioxidant capacity (TAS) levels were found when carvacrol was applied. Based on these findings, it could be proposed that Car was a strong candidate in preventing the CP-induced cardiotoxicity but further clinical studies should be done in order to verify its application on humans.
Protective properties of kefir on burn wounds of mice that were infected with S. aureus, P. auroginasa and E. coli
(Cellular and Molecular Biology (CMB), 2019) Çetik Yıldız, Songül; Demir, Cemil; Cengiz, Mustafa; Ayhanci, Adnan
Burns and burn wounds are very sensitive to infections and cause a large amount of death worldwide. Although burn wound is sterile at the beginning, because of the risk factors such as prolonged hospital stay, immune suppression and burn affecting large surface area, colonisation with Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli occur. For the burn therapy, one of the most important ways is to control bacterial infections. A probiotic fermented milk product kefir has antioxidant, antimicrobial, antiinflammatory, anticancer and various health promoting features. This study aims to examine possible protective properties of kefir which was used on the burn wounds that were infected with S. aureus, P. auroginasa and E. coli. Swiss albino / Balb-c mice were seperated into four groups: (1) used as control group, (2) second-degree burn model+ burn wounds were infected with P.aeruginosa + S.aureus + E.coli, (3) second-burn wounds were treated with sterile pads dressed with kefir and (4) second-degree burn+burn wounds were infected with P. aeruginosa + S.aureus +E.coli before being treated with sterile pads dressed with kefir. The serum biochemical results verified the histopathological results and our findings showed that kefir is an effective product with cell-protecting properties.
Wistar Albino Sıçanlarında Hypericum Triquetrifolium Turra. Tohum Metanol Ekstraktlarının Siklofosfamid-nedenli Mesane Hemorajik Sistiti ve Nefrotoksisitesi Üzerine Üroprotektif Etkilerinin İncelenmesi
(2020) Ayhanci, Adnan; Yıldız, Songul Çetik; Sahinturk, Varol; Keskin, Cumali
Amaç: Bu çalışmada, Hypericum triquetrifolium Turra (HT) tohum metanol ekstraktlarının (25,50,100 mg/kg, i.p., 6 gün boyunca) siklofosfamid (CYP) nedenli (150 mg/kg, tek doz, i.p.) akut mesane hemorajik sistit (HC) ve nefrotoksisiteye karşı olası üroprotektif etkileri araştırıldı. Gereç ve Yöntem: Bu çalışmada kullanılan Wistar albino sıçanlar, her biri yedi sıçan olmak üzere dokuz gruba ayrıldı. Grup 1 (kontrol) 0.5ml salin (SF) ile muamele edildi ve Grup 2, CYP (150 mg/kg) ile muamele edildi. Grup 3, 4, 5 sırasıyla 25, 50, 100 mg/kg HT ile tedavi edilirken, grup 6, 7, 8 sırasıyla 25, 50, 100 mg/kg HT + CYP ile tedavi edildi. Son olarak, Grup 9 (kontrol-2) 0.5ml-% 0.2 dimetil sülfoksit (DMSO) ile muamele edildi. Kan serumunda serum kreatinin, kan üre azotu (BUN), süperoksit dismutaz (SOD) ve katalaz (CAT) seviyeleri ölçüldü. Bulgular: CYP ile tedavi edilen sıçanların histopatolojik olarak hafif-orta derecede mesane ve böbrek yaralanmaları vardı. Böbrek hasarının biyokimyasal belirteçleri olan serum kreatinin ve BUN düzeyleri, kontrol grubuna göre önemli ölçüde artmıştır. Sonuç: HT, enflamasyonu ve apoptozu inhibe ederek sıçanlarda CYP ile ilişkili mesane HC'si ve nefrotoksisite üzerinde koruyucu bir etki göstermiştir.