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    Agomelatine could prevent brain and cerebellum injury against LPS-induced neuroinflammation in rats
    (Academic Press Ltd- Elsevier Science Ltd, 2020) Savran, Meltem Karadeniz; Aslankoç, Rahime; Özmen, Özlem; Erzurumlu, Yalçın; Savas, Hasan Basri; Temel, Esra Nurlu; Bortepe, S.
    Sepsis, systemic hyper-inflammatory immune response, causes the increase of morbidity and mortality rates due to multi-organ diseases such as neurotoxicity. Lipopolysaccharide (LPS) induces inflammation, oxidative stress and apoptosis to cause brain damage. We aimed to evaluate the antioxidant, anti-inflammatory and antiapoptotic effects of Agomelatine (AGM) on LPS induced brain damage via NF-kB signaling. Twenty-four animals were divided into three groups as control, LPS (5 mg/kg) and LPS + AGM (20 mg/kg). Six hours after the all administrations, rats were sacrificed, brain tissues were collected for biochemical, histopathological and immunohistochemical analysis. In LPS group; total oxidant status (TOS), OSI index, Caspase-8 (Cas-8), NF-k beta levels increased and Total antioxidant status (TAS) levels decreased biochemically and Cas-8, haptoglobin and IL-10 expressions increased and sirtuin-1 (SIRT-1) levels decreased immunohistochemically. AGM treatment reversed these parameters except haptoglobin levels in hippocampus and SIRT-1 levels in cerebellum. Besides, AGM treatment blocked the phosphorylation of NF-kB biochemically and ameliorated increased the levels of hyperemia, edema and degenerative changes histopathologically. In conclusion, AGM enhanced SIRT-1 levels to negatively regulate the transcription and activation of p-NF-kB/p65 which caused to ameliorate inflammation, oxidative stress and apoptosis.
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    Ameliorative effects of agomelatine against doxorubicin-induced hepatotoxicity
    (Bmc, 2025) Savas, Hasan Basri; Sozen, Mehmet Enes; Cuce, Gokhan; Batur, Tuba
    Drug-induced hepatotoxicity is a significant impediment to the use of doxorubicin, a commonly employed chemotherapeutic agent with established efficacy in cancer treatment. The present study aimed to determine the potential protective effects of agomelatine against doxorubicin hepatotoxicity in rat toxicity models. Thirty-two rats were divided into four groups: control (with saline administration), Doxo (with 40 mg/kg doxorubicin administration), Doxo + Ago20, and Doxo + Ago40 (with 20 and 40 mg/kg agomelatine administration and 40 mg/kg doxorubicin administration). On the day of 14 rats were sacrificed, samples were collected for comparison of immunohistochemical, hematological, and biochemical analysis. There were statistically significant differences between the study groups in terms of immunohistochemical, hematological, and biochemical parameters. Agomelatine administration reduced the TNF-alpha, and caspase-3, which increased by doxorubicin, and reversed levels of oxidative stress markers altered by doxorubicin (p < 0.05). Doxorubicin induces oxidative stress, apoptosis, and hepatotoxicity. Agomelatine may be favored as a primary antidepressant to mitigate hepatic damage induced by doxorubicin.
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    An evaluation of trace elements and oxidative stress in patients with benign paroxysmal positional vertigo
    (Public Library Science, 2023) Gunizi, Huseyin; Savas, Hasan Basri
    ObjectivesVertigo and Dizziness are a common complaint among the reasons for applying to the ear nose throat clinic. Benign Paroxysmal Positional Vertigo (BPPV) is the most common cause of perpheric vertigo. Oxidative stress is caused by the formation of hydroxyl radicals, superoxide anions and hydrogen peroxide, which are reactive oxygen derivatives (ROS). The aim of this study is to investigate the relationship between complaints and serum trace element and oxidative stress levels in patients with BPPV. MethodsThis study was conducted with 66 adult patients who presented to the ENT policlinic with the complaint of vertigo and were diagnosed with BPPV between May 2020 and September 2020. Blood samples were taken from patients diagnosed with BPPV to measure serum Zn and Cu levels and oxidative stress levels during an attack. ResultsThe mean ages of the study patients and healthy controls were 45.7 +/- 15.1 and 44.7 +/- 13.2. Female / Male ratio were 28(42.5%)/38(57.5%) and 32(48.5%)/34(51.5%) in study and control group. We found serum Cu levels were lower in the patient group (p <0.05). Serum Total Thiol and Native Thiol values were lower in patients with BPPV. Total Thiol results were statistically significant.(p<0.05) Disulfide values were significantly higher in the disease group. (P <0.05). Thiol Oxidized / Thiol Reduced ratio (2243.6 +/- 6.7/343.8 +/- 125.3) was higher in control group. (p<0.05) ConclusionSerum oxidative stress and trace elements play a role in the pathophysiology of BPPV. We present the cut-off values for Cu and Zn in vertigo patients for the first time in the literature. We think that these cut-off values of the trace elements and thiol/disulfide hemostasis can be used clinically by physicians in the etiology, diagnosis and treatment of vertigo.
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    Can Serum Biomarker Values from Second-Trimester Aneuploidy Screening Predict the development of Retinopathy of Prematurity in Premature Infants?
    (2024) Sabancı, Şenol; Küçük, Mehmet Fatih; Savas, Hasan Basri; Süren, Elçin; Erol, Muhammet Kazim; Yavuz, And; Sipahioğlu, Haydar
    Objectives: This study aimed to evaluate serum biomarker values measured during second-trimester aneuploidy screening in terms of their predictive ability for the development of retinopathy of prematurity (ROP) in premature infants. Methods: This retrospective cohort study evaluated the data of 1985 idiopathic premature infants who underwent ROP screening from 2016 to 2022. The infants were divided into two groups according to the presence of ROP, and those with ROP were further evaluated in two subgroups based on the presence of proliferation. Comparisons were made concerning the serum multiple of the median values of unconjugated estriol (uE3), human chorionic gonadotropin (hCG), and alpha-fetoprotein (AFP) among aneuploidy screening biomarkers. Results: While 1628 premature infants were in the non-ROP group, 357 were in the ROP group. Of the infants with ROP, 72 were in the proliferative ROP group and 285 in the non-proliferative ROP group. There was no significant difference in the multiple of the median values of the evaluated serum biomarkers (uE3, hCG, and AFP) between the ROP and non-ROP groups or between the proliferative ROP, non-proliferative ROP, and non-ROP groups. Conclusion: The multiple of the median values of second-trimester aneuploidy screening serum biomarkers were not able to predict the development of ROP in premature infants. This result may have been caused by the fact that the blood tests were taken only once and in the same weeks.
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    Can Serum Biomarker Values from Second-Trimester Aneuploidy Screening Predict the development of Retinopathy of Prematurity in Premature Infants?
    (Kare Publ, 2024) Sabanci, Senol; Kucuk, Mehmet Fatih; Savas, Hasan Basri; Suren, Elcin; Erol, Muhammet Kazim; Yavuz, And; Sipahioglu, Haydar
    Objectives: This study aimed to evaluate serum biomarker values measured during second-trimester aneuploidy screening in terms of their predictive ability for the development of retinopathy of prematurity (ROP) in premature infants. Methods: This retrospective cohort study evaluated the data of 1985 idiopathic premature infants who underwent ROP screening from 2016 to 2022. The infants were divided into two groups according to the presence of ROP, and those with ROP were further evaluated in two subgroups based on the presence of proliferation. Comparisons were made concerning the serum multiple of the median values of unconjugated estriol (uE3), human chorionic gonadotropin (hCG), and alpha-fetoprotein (AFP) among aneuploidy screening biomarkers. Results: While 1628 premature infants were in the non-ROP group, 357 were in the ROP group. Of the infants with ROP, 72 were in the proliferative ROP group and 285 in the non-proliferative ROP group. There was no significant difference in the multiple of the median values of the evaluated serum biomarkers (uE3, hCG, and AFP) between the ROP and non-ROP groups or between the proliferative ROP, non-proliferative ROP, and non-ROP groups. Conclusion: The multiple of the median values of second-trimester aneuploidy screening serum biomarkers were not able to predict the development of ROP in premature infants. This result may have been caused by the fact that the blood tests were taken only once and in the same weeks.
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    Comparison of growth factor levels in injectable platelet-rich fibrin obtained from healthy individuals and patients with chronic periodontitis: a pilot study
    (Bmc, 2024) Karci, Bilge; Savas, Hasan Basri
    Background This study aimed to assess and compare the concentrations of growth factors, white blood cells (WBCs), and platelets in injectable platelet-rich fibrin (i-PRF) derived from people with healthy periodontal conditions and those with chronic periodontitis.Methods Venous blood samples were obtained from 30 patients diagnosed with chronic periodontitis (test group) and 30 participants with healthy periodontal conditions (control group). The i-PRF was then acquired from centrifuged blood. The growth factors (VEGF, IGF-1, TGF-beta 1, PDGF-BB and EGF) released from the i-PRF samples were compared between groups with ELISA testing. The amounts of WBCs and platelets were also compared.Results No significant differences in the concentrations of growth factors were found between the groups (the mean values for the control and test groups were, respectively: IGF: 38.82, 42.46; PDGF: 414.25, 466.28; VEGF: 375.69, 412.18; TGF-beta 1: 21.50, 26.21; EGF: 138.62, 154.82). The test group exhibited a significantly higher WBC count than the control group (8.80 vs. 6.60, respectively). However, the platelet count did not show a statistically significant difference between the groups (control group 242.0 vs. test group 262.50). No significant correlation was observed between WBC count and growth factor level in either group.Conclusions The growth factor levels in i-PRFs did not exhibit significant difference between the two groups. This suggests that the levels of these growth factors may be unaffected by the periodontal disease.
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    Evaluation of thiol/disulfide homeostasis and ischemia modified albumin as potential markers for periodontitis
    (Bmc, 2025) Karci, Bilge; Savas, Hasan Basri
    Background The current study aimed to assess the impact of periodontitis on oxidative stress parameters by examining serum total antioxidant capacity (TAS), total oxidant status (TOS), oxidative stress index (OSI), thiol/ disulfide homeostasis and ischemia modified albumin (IMA). Methods The study had 90 participants, categorized into 3 groups: Group 1: Periodontally healthy; Group 2: Stage II Grade B periodontitis; Group 3: Stage III and IV Grade B periodontitis. Demographic and periodontal variables were assessed. The levels of serum TAS, TOS, OSI, IMA, and thiol/disulfide were assessed. Results No significant differences in sex and age were detected among the groups (p > 0.05). When compared to Group 1, all clinical measurements were statistically significantly greater in Group 3 (p < 0.05). Statistical analysis revealed no significant differences in serum TAS, TOS, and OSI levels among the groups (p > 0.05). The highest serum IMA value was observed in Group 3 (p = 0.037), whereas native thiol (p = 0.00), total thiol (p = 0.00) and disulfide values (p = 0.023) were highest in Group 1. Conclusions These findings indicate that thiol/disulfide homeostasis and IMA could hold promise as a potential biomarker of inflammation in periodontitis.
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    Investigation of oxidant-antioxidant status in patients treated with hirudotherapy: an experimental study
    (Pakistan Medical Assoc, 2024) Sarikan, Ismail; Savas, Hasan Basri
    Objective: To examine the influence of hirudotherapy on parameters of oxidative stress. Method: The cross-sectional study was conducted from March 29 to September 29, 2021, at the Alanya Research and Training Hospital's Traditional and Complementary Medicine Application Centre, Turkey, and comprised adult volunteers of either gender. The participants were subjected to two sessions of hirudotherapy 4 weeks apart. Total antioxidant status, total oxidant status, oxidative stress index values, ischaemia-modified albumin level, paraoxonase 1, disulfide, native thiol, total thiol, and arylesterase levels were assessed at baseline and after the second hirudotherapy session. Data was analysed using SPSS 15. Results: Of the 50 subjects, 30(60%) were females and 20(40%) were males. The overall mean age was 47.10 +/- 15.16 years. Oxidative stress, ischaemia-modified albumin and disulfide levels decreased, but not significantly (p>0.05). The reduction in disulfide levels was significant (p=0.021). Conclusion: Hirudotherapy, within its limitations, could reduce oxidative stress.
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    Mathematical Modeling for the Course of COVID-19 Pandemics in Libya
    (Amer Inst Physics, 2021) Cakir, Zafer; Savas, Hasan Basri
    In this study, it was aimed to determine the course of COVID-19 infection in Libya with a new modified mathematical modeling and to show the possible number of cases and deaths in the upcoming period. We performed detailed analyzes with the help of the analytical solution of the time-dependent logistics model that we obtained. The results obtained separately on a total and daily basis were shown graphically. In the last part, it is emphasized how important individual and public precautions in order to decrease the spread rate of the disease and to be better controlled.
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    Noael Düzeyinde Sentetik Gıda Boyalarına İntrauterin Maruziyetin Tükürük Bezi Üzerine Etkilerinin Erişkin Dönemde Araştırılması
    (2017) Gültekin, Fatih; Aylak, Firdevs; Savas, Hasan Basri; Başak, Kayhan; Kumbul, Duygu Doğuç
    [Abstract Not Available]
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    Predictive value of oxidative, antioxidative, and inflammatory status for left ventricular systolic recovery after percutaneous coronary intervention for ST-segment elevation myocardial infarction
    (Assoc Medica Brasileira, 2022) Aksoy, Fatih; Bas, Hasan Aydin; Bagci, Ali; Savas, Hasan Basri; Ozaydin, Mehmet
    OBJECTIVE: This study aimed to evaluate the association between left ventricular ejection fraction recovery and the total oxidant status, total antioxidant capacity, and high-sensitivity C-reactive protein levels. METHODS: A total of 264 ST-elevation myocardial infarction patients were classified into two groups according to baseline and 6-month follow-up left ventricular systolic function: reduced and recovery systolic function. Predictors of the recovery of left ventricular ejection fraction were determined by multivariate regression analyses. RESULTS: Multivariable analysis indicated that oxidative status index, baseline left ventricular ejection fraction and peak creatine-kinase myocardial bundle level, and high-sensitivity C-reactive protein were independently associated with the decreased of left ventricular ejection fraction at 6-month follow-up. CONCLUSION: Oxidative stress and inflammation parameters were detrimental to the recovery of left ventricular ejection fraction in patients with ST-elevation myocardial infarction.
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    Protective Effects of Selenium against Acrylamide-Induced Hepatotoxicity in Rats
    (Univ Agriculture, Fac Veterinary Science, 2024) Sozen, Mehmet Enes; Savas, Hasan Basri; Cuce, Gokhan
    Acrylamide (ACR) is an organic chemical widely consumed worldwide, depending on the diet. ACR has toxic effects on the liver and other organs due to oxidative damage. The research is aimed to determine the effects of Selenium (Se) against ACR toxicity. 32 Wistar albino male rats were divided into Control, ACR, Se, and ACR+Se groups. After slaughter on the 28 th day, the blood samples taken from the animals were tested for total oxidant status (TOS) and total antioxidant status (TAS) to assess oxidative stress. The liver tissue sections were evaluated for lymphocyte infiltration, hepatocyte degeneration, sinusoid dilatation, and congestion. IL-6, Bax, and Bcl-2 expression were evaluated with immunohistochemistry. While the ACR group's TOS and oxidative stress index (OSI) values were significantly higher than the control group's, there was no significant difference in the ACR+Se group's TOS and OSI values. The ACR group had a considerably higher histopathological score than the other groups. ACR increased IL-6, and Bax levels and decreased Bcl-2 levels compared to the control, Se, and ACR+Se groups. ACR increased oxidative stress significantly caused toxic effects, inflammation, and cell death in the liver. On the other hand, Se oral supplementation may protect against oxidative stress, toxic effects, inflammation, and cell death induced by ACR in the liver.
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    The ameliorative effects of hesperidin in rats developed hepatotoxicity with deltamethrin
    (Mashhad Univ Med Sciences, 2025) Karabekir, Seda Cetinkaya; Sozen, Mehmet Enes; Ayan, Ilknur Cinar; Savas, Hasan Basri; Cuce, Gokhan; Kalkan, Serpil
    Objective(s): Deltamethrin (DLM) is a widely used insecticide in agriculture; however, exposure to it can lead to serious health problems. This study aimed to evaluate the protective effects of hesperidin (HSP), a natural antioxidant, against DLM-induced liver toxicity. Materials and Methods: Thirty-two male Wistar Albino rats (250-300 g, 4 months old) were divided into four groups. The control group received 1 ml of corn oil via oral gavage for 30 days. The DLM group received 1.28 mg/kg DLM in corn oil for 30 days. The DLM+HSP 100 mg/kg and DLM+HSP 300 mg/kg groups received 1.28 mg/kg DLM followed by 100 mg/kg or 300 mg/kg HSP in distilled water, respectively, 30 min after DLM administration for 30 days. Liver tissues were examined histopathologically. Masson's trichrome staining and PCR assessed fibrosis. Caspase 3 and 9 expressions in liver tissues were determined by immunohistochemistry and PCR. Biochemical analyses were conducted on serum samples. Results: HSP supplementation led to a dose-dependent decrease in aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels. DLM exposure decreased antioxidant capacity, while HSP supplementation increased it dose-dependently. Histopathological evaluations showed increased liver damage in the DLM group, while HSP administration reduced liver toxicity. Masson's trichrome staining and analysis of collagen I (COL1A1) and collagen III (COL3A1) gene expression revealed increased fibrosis in the DLM group, which was attenuated with HSP treatment. Conclusion: The potential prevention of DLM-induced liver toxicity and apoptosis by HSP may be an alternative protective strategy.
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    The effect of tartrazine on angiogenesis and oxidative stress in the chorioallantoic membrane model
    (2025) Savas, Hasan Basri; Sozen, Mehmet Enes; Dinç, Elina
    Tartrazine is commonly preferred as a coloring agent in non-alcoholic beverages, fruit juices, jellies, cereals, and soups. This study aims to investigate the effects of tartrazine exposure on anti-angiogenesis and the oxidant-antioxidant balance. Three different tartrazine dose, a bevacizumab, and an empty pellet used to evaluate anti-angiogenic effects on the chorioallantoic membrane (CAM) model. Fluid samples were collected for measurements of total antioxidant capacity (TAC) and total oxidant status (TOS), from which the oxidative stress index (OSI) was calculated. The control group and 10-6 M tartrazine group had no anti-angiogenic impact, but the bevacizumab group had a strong anti-angiogenic effect. Furthermore, the 10-4 M and 10-5 M tartrazine groups had a weak anti-angiogenic effect. The levels of TOS increase with tartrazine consumption. TAC values were highest in the 10-6 M tartrazine group and lowest in the 10-5 M tartrazine group. Moreover, OSI values have increased in the 10-4 M tartrazine group, 10-5 M tartrazine group, and 10-6 M tartrazine group compared to control group. This study demonstrates that tartrazine exposure leads to dose-dependent increases in oxidative stress and, in parallel, exhibits dose-dependent anti-angiogenic effects. For this reason, it is recommended to be careful when consuming products containing tartrazine.
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    The effects of maternal body weight on iodine concentration in breast milk and cord blood and infant growth
    (Cambridge Univ Press, 2025) Kahraman, Ceren Sarahman; Savas, Hasan Basri; Erdem, Dilek; Ayhan, Nurcan Yabanci
    Breast milk (BM) is the only source of iodine and bioactive compounds that influence growth and development in infants. The content of BM may be influenced by maternal body mass index (BMI). The aim of this study was to investigate the effect of maternal weight on BM and cord blood iodine concentrations, growth-related hormones, infant anthropometric measurements. A total of 84 mother-infant pairs participated. Levels of leptin, adiponectin and insulin-like growth factor-I (IGF-I) in postnatal BM and cord blood were analysed by enzyme-linked immunosorbent assay (ELISA), iodine by Sandell-Kolthoff reaction. Dietary iodine intake of women was determined by food frequency questionnaire, and anthropometric measurements of infants at birth and 3 months were evaluated. Dietary iodine intake was found to be similar in normal weight (NW) and overweight/obese (OW/OB) women (p > 0.05). Breast milk iodine concentration (BMIC) was 17.4 mu g in NW, 18.2 mu g in OB/OW women. Adiponectin in cord blood and IGF-I in BM were higher OB/OW than NW women (p < 0.05). Positive correlations were found between the infant birth weight and adiponectin in BM, between the infant body weight at 3 months and leptin and adiponectin in BM, between the infant birth head circumference and IGF-I in BM (p < 0.05). In multiple linear regression model, leptin and adiponectin in BM had a positive effect on infant body weight (p < 0.05). Maternal BMI may influence infant body weight via leptin and adiponectin in BM and infant head circumference via IGF-I. No relationship was found between maternal BMI and iodine levels and anthropometric measurements of the infant. Longitudinal studies are recommended to understand the effect of BMIC on growth.
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    The effects of psychostimulants on oral health and Saliva in children with attention deficit hyperactivity disorder: A case-control study
    (Wolters Kluwer Medknow Publications, 2018) Ertuğrul, Ceylan Çağıl; Kırzıoğlu, Zühal; Aktepe, Evrim; Savas, Hasan Basri
    Introduction: This study investigated the dental health problems and saliva characteristics of children under psychostimulant therapy for attention-deficit hyperactivity disorder (ADHD). Materials and Methods: One hundred and twenty children aged 7-12 years were divided into three groups. Groups 1-2 comprised children diagnosed with ADHD: those who had not yet started psychostimulant therapy (Group 1) and those already receiving long-term psychostimulant therapy (Group 2). Group 3 comprised healthy, nonmedicated children. Possible side effects of psychostimulants were investigated at the beginning of study in Group 2 and after 3 months drug use in Group 1. Bruxism and dental erosion prevalence, salivary Streptococcus mutans count, buffering capacity, and stimulated salivary flow rate (SSFR) were measured, and salivary a-amylase, calcium, total protein, and proline-rich acidic protein (PRAP) levels were quantified in the beginning of the study. Data were analyzed using the Kruskal-Wallis test. Results: The most frequently reported side effects of psychostimulants were decreased appetite, dry mouth, and increased fluid consumption. The prevalence of bruxism and dental erosion was higher in Groups 1 and 2 than in Group 3, but the differences were not significant (P > 0.05). In Group 2, subjective dry mouth feel was reported by 32.5% of patients and 17.5% had a very low SSFR. Salivary a-amylase, calcium, total protein, and PRAP levels were lower in Group 2 than the others, but the differences were not significant (P > 0.05). Conclusions: ADHD and psychostimulant therapy do not appear to be significantly related to decreasing SSFR or protective saliva components against dental caries. However, a systematic investigation of the long-term safety of psychostimulants is needed. The most effective method of maintaining dental health of children with ADHD is frequent appointments focusing on oral hygiene practices accompanied by dietary analyses.
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    The Oxidative and Anti-Angiogenic Effects of Acrylamide in Chorioallantoic Membrane Model
    (2023) Sozen, Mehmet Enes; Akkaya, Özgür; Savas, Hasan Basri; Karahan, Oguz
    Objective: Acrylamide (ACR) is formed spontaneously during the preparation of carbohydrate-containing foods by exposure to high heat and can be found in large amounts in processed ready-made foods like potato crisps, biscuits, crackers, and bread. ACR is a toxic substance and increases oxidative stress. The aim of the study is to show the effects of ACR exposure at different doses on angiogenesis and oxidant-antioxidant balance in the chorioallantoic membrane (CAM) model. Methods: Two different concentrations of ACR were prepared (10-3 M and 10-4 M). Pellets were placed on the CAM of the embryos. Liquid samples were taken from fertilized chicken eggs before and after the experiment. Anti-angiogenic effects were evaluated through the window that was opened on the eggshell. Results: The 10-4 M ACR group caused anti-angiogenic effects (average score 0.3) which were higher than the control group, but these changes were not statistically significant. The 10-3 M ACR group caused moderate anti-angiogenic effects (average score 0.6). The 10-6 M Bevacizumab group caused powerful anti-angiogenic effects (average score 1). There is a significant increase in total oxidant capacity (TOC) and oxidative stress index (OSI) values in 10-3 M ACR and 10-4 M ACR groups, compared to the control group. Although there was a numerical increase in TOC and OSI values in 10-3 M ACR group compared to 10-4 M ACR group, this increase was not statistically significant. Conclusion: This study is the first to investigate the anti-angiogenic effects of ACR and is one of the first to investigate oxidative stress in the CAM model. ACR exposure increased oxidative stress in the CAM model and showed a dose-dependent anti-angiogenic effect.