Selvinaz Yakan

Mrs. Selvinaz Yakan


Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2019 in Journal of Enzyme Inhibition and Medicinal Chemistry
Verified
Journal Article
Open access
SYSelvinaz Yakan
Selvinaz Yakan
TATuba Aydin
Tuba Aydin
CGCanan Gulmez
Canan Gulmez
OOOzkan Ozden
Ozkan Ozden
KAKivilcim Ates
Kivilcim Ates
ACAhmet Cakir
Ahmet Cakir
In this study, we investigated whether jervine (J) could prevent gastrointestinal (GI) side effects of abdominopelvic radiotherapy (RT) in Wistar-Albino female rats. Rats were divided into five groups: control (C), J only (J), J administered at 5 mg/kg/days for 7 days, RT only (RT), J before RT (J + RT), J administered for seven days before RT, J both before and after RT (J + RT + J), and J administered for 7 days before RT and after RT for 3 days. The weights of rats were measured on the 1st, 7th, and 10th days of the study. Rats were sacrificed to obtain tissues from the liver and intestine, which was followed by taking blood samples intracardially. In addition, the tissues were stained with pyruvate dehydrogenase (PDH) immunohistochemically. In our study, J supplementation markedly reduced weight loss, and histopathological, immunohistochemical, biochemical results suggest that J had a protective effect on GI toxicity following RT.

27 December 2018 in Harran Üniversitesi Veteriner Fakültesi Dergisi
Verified
Journal Article
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SYSelvinaz Yakan
Selvinaz Yakan
En tr This study was conducted to determine the prevalence of foot diseases in cattle in Ağrı province. The study was carried out on a total of 1486 cattle of different breeds, ages and genders. Distribution of animals according to breeds were 34.66% (515 cases) Brown Swiss, 30.96% (460 cases) Simmental, 24.02% (357 cases) indigenous breed and 10.36% (154 cases) crossbreeds. Distribution of the cases among genders were 84.45% (1255 cases) females and 15.55% (231 cases) males. Foot diseases were found in 280 of 1486 cattle. Among the diseases determined were interdigital dermatitis in 29.45% (48 cases), digital dermatitis in 23.31% (38 cases), interdigital hyperplasia in 16.57% (27 cases), bruised sole in 15.95% (26 cases), fissured ungulae in 6.75% (11 cases), interdigital phlegmon in 3.68% (6 cases), sole ulcer in 2.45% (4 cases) and white line diseases in 1.84% (3 cases). In 11 cases (3.92%) only lesions were observed while in 117 cases (41.79%) only hoof deformities were determined. In 152 cases (54.29%) both lesions and hoof deformities, were determined. Lameness were observed 2.14% in the right forefoot, 4.29% in the left forefoot, 47.86% in the right hind foot and 45.71% in the left hind foot. The lesions were found to be located more frequently in the lateral hoof of the hind foot (55.73%) and in the medial hoof of the front foot (61.11%). According to the results of this research, the annual prevalence of foot diseases in cattle in Ağrı province was determined as 18.84% between 2016-2017. Bu çalışma; Ağrı ilinde sığırlarda görülen ayak hastalıklarının prevalansının belirlenmesi amacıyla yapıldı. Araştırma farklı ırk, yaş ve cinsiyette toplam 1486 sığır üzerinde yürütüldü. Araştırmadaki hayvanların ırklara göre dağılımı %34.66 (515 olgu)’sı Montofon, %30.96 (460 olgu)’sı Simental, %24.02 (357 olgu)’si yerli ırk, %10.36 (154 olgu)’sı melez sığırlardı. Olguların cinsiyete göre dağılımı ise %84.45 (1255 olgu)’i dişi, %15.55 (231 olgu)’i erkekti. 1486 sığırdan 280 sığırda ayak hastalığı tespit edildi. Tespit edilen hastalıkların %29.45 (48 olgu)’i interdigital dermatitis, %23.31 (38 olgu)’i digital dermatitis, %16.57 (27 olgu)’si interdigital hiperplazi, %15.95 (26 olgu)’i ökçe çürüğü, %6.75 (11 olgu)’i tırnak çatlağı, %3.68 (6 olgu)’i interdigital flegmon, %2.45 (4 olgu)’i taban ülseri ve %1.84 (3 olgu)’ü beyaz çizgi hastalığı oluşturdu. Hastalık tespit edilen olguların %54.29 (152 olgu)’unda tırnak deformasyonu ile birlikte lezyon görülürken %3.92 (11 olgu)’sinde sadece lezyon, %41.79 (117 olgu)’un da da sadece tırnak deformasyonu saptandı. Topallık %2.14 oranında sağ ön ayakta, %4.29 oranında sol ön ayak, %47.86 oranında sağ arka ayak, %45.71 oranında sol arka ayakta görülmüştür. Arka ayaklardaki lezyonların daha çok lateral (%55.73), ön ayakta ise daha çok medial tırnaklarda (%61.11) yerleştiği saptanmıştır. Bu araştırmanın sonuçlarına göre 2016-2017 yılları arasında Ağrı ilinde sığırlarda ayak hastalıklarının yıllık prevalansı %18.84 olarak belirlenmiştir.

18 April 2018 in Acta Scientiae Veterinariae
Verified
Journal Article
Open access
PDF file
SYSelvinaz Yakan
Selvinaz Yakan
VDVesile Duzguner
Vesile Duzguner
OAOzgur Aksoy
Ozgur Aksoy
Background: Disbudding is often practiced in modern farm because of the reasons for the safekeeping of the animal, other animals lessen the risk of injury and less aggressive behavior. Without regard to the method of disbudding leads to disruption behavioral changes, cardiac and endocrine responses related pain of animals. Sedation, local anesthesia and analgesia are performed studies in order to eliminate of cardiac, endocrine, behavioral response which is caused by pain associated with disbudding. In this study, it was aimed to determine the effect on the oxidant and antioxidant system in the calves of disbudding by using the caustic paste with and without painkiller.Materials, Methods & Results: The animal material of the study was created 24 Simmentals calves in different sexes on average 2 weeks (± 2 days) and 50 kg (± 15 kg) live weight. The cases were randomly divided into 2 groups of 12 calves in each group. In the group I (analgesia group); caustic paste+painkiller (2.2 mg-1 flunixin meglumine intravenous, IV) and group II (non-analgesia group); as disbudding applied with caustic pasta application only were divided into 2 groups. In the I group, 15th min before the application, flunixin meglumine at a dose of 2.2 mg-1 was administered IV and the horn blunting was performed by caustic paste method. Blood samples were taken at 15, 30 and 60th min after completion of horn blunting and physiological findings were recorded. In group II, the horns of the calves were disbudding with the same technique (but no analgesia aplication). Blood samples were taken at 15, 30 and 60th min after completion of horn blunting and physiological findings were record. Cortisol, glucose, total oxidant capacity (TOC) and total antioxidant capacity (TAC), 8-hydroxy-2’-deoxyguanosine (8-OHdG), glutathione (GSH), superoxide dismutase (SOD) enzymes measurements (ELISA) were performed in both groups. TOC and TAC tests were used to determine the oxidative stress index in the obtained serum, 8-OHdG measurement which is the most sensitive and most frequent oxidative DNA damage indicator for determination of oxidative damage; GSH, SOD enzymes were analyzed by ELISA using commercial kit for the evaluation of antioxidant potential. For evaluation of pain in animals, cortisol (ELISA) and glucose level in serum were measured with ELISA by using commercial kit. In the group without flunixin meglumine, cortisol was increased significantly from the 15th min (P < 0.05), but there was no increase in the 30 and 60th min in painkiller administered group. Glucose levels were higher in the group not using painkillers than those used at 15th (P < 0.001) and 30, 60th min (P < 0.05). TOC (P < 0.001) and 8-OHdG (P < 0.05) values were significantly higher in the group without painkiller while TAC, GSH and SOD levels (P < 0.05) were significantly decreased.Discussion: It has been observed that sedation (such as xylazine) and local anesthesia (such as lidocaine) use removed pain-induced stress in the disbudding with caustic paste in calves. However, in order to remove the endocrine response, it is necessary to combine the anesthesia protocol with the analgesic (such as flunixin meglumine) combination. According to our results concluded that the painkiller given before the disbudding process was supporting the antioxidant system, reducing the level of cortisol and oxidative stress.

13 March 2023 in Acta Scientiae Veterinariae
Verified
Journal Article
Open access
SYSelvinaz Yakan
Selvinaz Yakan
Background: In a healthy organism, oxidants and antioxidants are in balance. However, in cases such as inflammation, infection, and stress, this balance is disrupted in favor of oxidants, creating oxidative stress that can cause damage to cells or tissues. It is known that oxidative stress plays a role in the pathogenesis of many diseases. Determination of oxidant and antioxidant balance, especially in inflammatory diseases, plays an important role in elucidating the pathogenesis of the disease and developing treatment strategies. This study, it was aimed to reveal the oxidant status in inflammatory disease of calves with septic and aseptic arthritis. Materials, Methods & Results: The material of the study consisted of 21 calves up to 2 months old, of different races and genders, 14 (9 male, 5 female) with arthritis and 7 healthy (control, 5 male, 2 female). Of the calves with arthritis, 11 were septic and 3 were acute aseptic. In the calves with arthritis, the affected joint or joints were determined by clinical examinations. By palpating the joints, swelling, local temperature increase, tension in the joint capsule, presence of pain, and the presence and severity of lameness were examined. The color, clarity, viscosity, odor, and clot formation of the synovial fluid were examined and determined to be septic or aseptic. To determine the antioxidant status, the levels of malondialdehyde (MDA), which is the most important oxidative stress marker, and superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT), which are the enzymatic antioxidant enzymes, were measured spectrophotometrically in serum samples. Vitamin E, C, and A levels, which are nonenzymatic antioxidants, were also measured colorimetrically. In the clinical examination, lameness was detected in the relevant extremity of all patients with arthritis. In the macroscopic examination of the synovial fluids taken from animals with arthritis, the colors of the synovial fluids varied between yellow and yellow tones in 11 cases; in 3 cases, it was determined that they were red and brown. It was observed that the colors of the synovial fluids were transparent in the subjects in the control group. It was observed that the synovial fluid clarity of the calves with arthritis was lost, with severe turbidity (+++) in 3 cases, moderately turbid (++) in 6 cases, slightly turbid (+) in 2 cases, and clear (-) in 3 cases. It was observed that the viscosity of synovial fluid taken from calves with arthritis decreased in varying degrees according to the severity of the disease, severe (+++) in 5 cases, moderately decreased (++) in 4 cases, slightly decreased (+) in 2 cases, and normal in 3 cases. It was determined that the viscosity of the synovial fluid taken from the calves in the control group was normal. There was a statistically significant difference between the groups in terms of MDA (P < 0.01), SOD (P < 0.01), GSH-Px (P < 0.05), vitamin E (P < 0.001), and vitamin C (P < 0.01), while MDA levels increased in calves with arthritis, SOD and GSH-Px activities and vitamin E and C levels decreased significantly. Although there was no statistically significant difference in CAT (P > 0.05) enzyme activity, it was determined that it was at a lower level in calves with arthritis, and there was no significant difference between the groups in terms of vitamin A (P > 0.05). Discussion: According to the results of the study, there is an increase in oxidative stress and a decrease in antioxidant status in calves with arthritis. It is thought that these changes may be due to efforts to reduce tissue damage by reducing lipid peroxidation. As a result, it was determined that oxidant and antioxidant balance was impaired in calves with arthritis, and oxidative stress and lipid peroxidation developed due to the increase in free radicals. It is thought that giving additional antioxidants to the calves may contribute to the recovery of the disease and reduce treatment costs. Keywords: arthritis, antioxidant, calve.

16 January 2019 in Acta Scientiae Veterinariae
Verified
Journal Article
Open access
SYSelvinaz Yakan
Selvinaz Yakan
OAOzgur Aksoy
Ozgur Aksoy
Background: In veterinary surgical operations for cats and dogs, inhalation anaesthesia is known to be a good option for general anaesthesia in long operations or emergency cases. Studies have revealed that during inhalation anaesthesia, the heart and respiratory functions of the animals are more stable compared to injectable anaesthesia. However, there are few studies performed with the use of inhalation anaesthesia in ruminants. In this research, the goal is to evaluate the effects of isoflurane and sevoflurane after induction with propofol in calves based on clinical and physiological parameters and to find a more reliable strategy for general anaesthesia in ruminants.Materials, Methods & Results: The research was carried out on 30 calves, from new-born up to 3-months-old, undergoing surgery operation. Each group consisted of 15 animals that were divided as isoflurane and sevoflurane. For premedication, atropine was administered at a dose of 0.04 mg/kgvia subcutaneous injection in calves. For induction, 15 min after atropine application, propofol was given at 5-6 mg/kgvia intravenous infusion. Then, endotracheal intubation was performed and inhalation anaesthesia began at 5 min after induction. In the isoflurane group, the onset of anaesthesia concentration was set to 3-5% and the maintenance was set to a concentration of 1.5-3%. In the sevoflurane group, the onset of anaesthesia concentration was set to 5-7% and the maintenance was set to a concentration of 2.5-4%. To monitor the calves, the heart rate (HR), the pulse rate (PR), the systolic blood pressure (SBP), diastolic blood pressure (DBP), the respiratory rate (RR), the rectal temperature (RT) and the electrocardiogram (ECG) measurements were recorded before anaesthesia, the premedication, the induction periods, at 5, 15, 30, 45, 60, and 75 min after the onset of inhalation anaesthesia during the operation period. Blood samples were taken before anaesthesia, premedication, induction periods, at 30 and 75 min during the operation and the red blood cell (RBC) count, white blood cell (WBC) count, the amount of haemoglobin (HGB), the haematocrit concentration (HCT), and the platelet (PLT) count were evaluated. Based on the findings, isoflurane and sevoflurane suppressed the cardiovascular system minimally. Both anaesthetic agents caused decreases that did not exceed the physiological limits compared to the measurements taken before the initiation of anaesthesia. Although no significant differences were detected between the groups (P > 0.05) at clinical parameters, the RT differences were regarded as statistically significant according to the measurements that were taken before anaesthesia at all measurement times (P < 0.05). In both groups, the changes that occurred in the P wave, the PR interval, and in the QRS, R and T waves remained within the reference values given in the literature. Both anaesthetic agents have similar effects on the ECG. The dramatic no changes throughout anaesthesia in terms of the amount of HGB and HCT, the RBC, the WBC, and the PLT were not statistically significant, which may be associated with good tissue perfusion.Discussion: Since no serious complications occurred with either anaesthetic option, we have concluded that isoflurane and sevoflurane have similar effects on the cardiopulmonary systems of calves. In addition, the effects of propofol, which is used for induction, have been evaluated and observed and this drug is an effective and reliable option to initiate inhalation anaesthesia. The research on the use of this anaesthetic in calves is limited and most of the existing studies investigated its combination with injectable anaesthetics. As a result, in this research, we concluded that isoflurane and sevoflurane induce similar physiological measurement results, blood parameters, and ECG results and that both anaesthetics cause minimal complications.

15 December 2020 in Acta Scientiae Veterinariae
Verified
Journal Article
Open access
PDF file
SYSelvinaz Yakan
Selvinaz Yakan
OAOzgur Aksoy
Ozgur Aksoy
CECelal Sahin Ermutlu
Celal Sahin Ermutlu
Background: Inhalation anaesthesia is an effective and reliable general anaesthesia method for inactivity, analgesia, and unconsciousness in extensive surgical procedures. Although widely used, especially in small animals, there are very few studies investigated the reliability and superiority of inhalation anaesthesia in surgical procedures for ruminants. This study intended to evaluate the anaesthetic effects of isoflurane and sevoflurane in different surgical cases with endotracheal intubation following the induction of anaesthesia using a calve-specific facemask, which is not yet a routine option in cattle. Materials, Methods & Results: The study was conducted on 14 calves, from new-born up to 3 months-old, that undergoing various surgical operations. The animals were divided into isoflurane and sevoflurane groups, and each group contained 7 animals. In all cases, atropine (0.04 mg/kg was administered intramusculer as premedication before 15 min from anaesthesia induction. For induction, the anaesthetic agent was given at an inspiratory concentration of 3-5% in the isoflurane group and at an inspiratory concentration of 5 - 7% in the sevoflurane group during 5 min via mask at 15 min after atropine administration. In both groups, endotracheal intubation was performed (about 1-3 min) after of general anaesthesia symptoms starting. At 5 min after induction, anaesthesia was continued at 1.5 - 3% in the isoflurane group and at 2.5 - 4% in the sevoflurane group during operation. The animals were monitored during anaesthesia and, anaesthetic effect, reaction of the calve, pronounced side effects, Heart Rate (HR), Systolic Arterial Blood Pressure (SABP), Diastolic Arterial Blood Pressure (DABP), Mean Arterial Blood Pressure (MABP), Respiration Rate (RR), Pulse Rate (PR), Arterial Oxygen Saturation (SpO(2)) were recorded at before anaesthesia, the premedication period, 5, 15, 30, 45, 60, 75 and 90 min of anaesthesia. During anaesthesia, from the clinical parameters, mucosal capillary refilling time was evaluated by applying finger pressure to the oral mucosa. Mucous membrane color was determined by observing the oral mucosa. The time for palpebral reflex and swallowing reflex disappearance was measured and processed into individual forms. Anaesthesia induction and reanimation times were determined and recorded in the forms. After the operation, the return of the swallowing reflex and the time to stand up were recorded. During the operation, urination, defecation, salivation, vomiting, animal reactions, the shape and duration of the reamination period were recorded. In the isoflurane group anaesthesia induction was 3.71 +/- 0.28 min, head movements started and came to the sterno- abdominal position at 4.57 +/- 0.36 min, got up at 8.71 +/- 0.42 min without assistance, meanwhile. In sevoflurane group, anaesthesia induction was 2.57 +/- 0.20 min, head movements started and came to the sterno- abdominal position at 3.86 +/- 0.40 min, the time to stand up was determined as 6.43 +/- 0.29 min. During anaesthesia, HR, SABP, DABP, MABP, RR, PR, SpO(2) findings were within physiological acceptable limits in two groups. In terms of indicators, there were no obvious differences in either group. The results revealed no significant difference between groups during anaesthesia. Discussion: The isoflurane and sevoflurane anaesthesia used in this study provided an adequate anaesthetic effect in calves characterized by adequate analgesia and muscle relaxation without any complications. The results of our study revealed that there was no significant difference between isoflurane and sevoflurane in calves. Both anaesthetic agents can be used safely for general anaesthesia in calves.