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Male Infertility Is Significantly Associated With Multiple Deletions In An 8.7-Kb Segment Of Sperm Mtdna In Pakistan, Irfan Afzal Mughal, Asma Irfan, Sarwat Jahan, Abdul Hameed
Male Infertility Is Significantly Associated With Multiple Deletions In An 8.7-Kb Segment Of Sperm Mtdna In Pakistan, Irfan Afzal Mughal, Asma Irfan, Sarwat Jahan, Abdul Hameed
Turkish Journal of Medical Sciences
Background/aim: This study aimed to find a link between sperm mitochondrial DNA mutations and male infertility in Pakistan. Materials and methods: DNA from semen samples was extracted and amplified by PCR using 7.8-kb deletion-specific primers. The PCR products were separated on agarose gel, visualized under UV-illumination, and then photographed. The results were genotyped and the data were analyzed using SPSS. Results: Deletion analysis of the 8.7-kb fragment by long PCR revealed multiple deletions. The frequency of deletion was much higher in infertile groups as compared to the control group. Further, on comparison between different subtypes of infertile groups, the deletions …
Frequency And Molecular Characterization Of Human Norovirus In Erzurum, Turkey, Mehmet Özkan Ti̇murkan, Hakan Aydin, Osman Aktaş
Frequency And Molecular Characterization Of Human Norovirus In Erzurum, Turkey, Mehmet Özkan Ti̇murkan, Hakan Aydin, Osman Aktaş
Turkish Journal of Medical Sciences
Background/aim: There are limited studies on genotyping and phylogenetic analysis of norovirus in Turkey, and this has not previously been studied in the Eastern Anatolia region. The aim of the present study was to determine the norovirus profile in this region with genotyping and phylogenetic analysis. Materials and methods: Included in the study were stool samples obtained from 427 people from different age groups in Eastern Anatolia. The nucleic acid samples isolated by the automatic system and nucleic acid sequence reactions and phylogenetic analyses were performed on RNA samples. Results: The presence of norovirus was detected in 86 (20.1%) of …
The Effect Of Acetylsalicylic Acid On Vasopressin, Serum Insulin Levels, Insulin Resistance, And Biochemical Parameters In Rats Induced With Experimental Diabetes Type 2, Serkan Şen, Sefa Çeli̇k
The Effect Of Acetylsalicylic Acid On Vasopressin, Serum Insulin Levels, Insulin Resistance, And Biochemical Parameters In Rats Induced With Experimental Diabetes Type 2, Serkan Şen, Sefa Çeli̇k
Turkish Journal of Medical Sciences
Background/aim: Acetylsalicylic acid (ASA) treatment in diabetic patients is very important owing to the increasing hyperactivity of thrombocytes and atherosclerosis. In several investigations, it was reported that diabetes caused increased coronary artery disease, cerebrovascular disease, and death. In this study, we aimed to investigate the effect of ASA on osmoregulation, glycemic control, and some biochemical parameters in rats induced with experimental diabetes type 2. Materials and methods: Twenty-four rats were randomly divided in four groups: control (I), ASA control (II), diabetic (III), and ASA diabetic (IV). Diabetes was induced by streptozotocin treatment (30 mg/kg, twice, intraperitoneal injection) in obese rats. …
Changes In The Serum, Liver, And Renal Cortical Lipids And Electrolytesin Rabbits With Cisplatin-Induced Nephrotoxicity, Abdelgayoum Ahmed Abdel-Gayoum, Mohamed Hamza Sulaiman Ahmida
Changes In The Serum, Liver, And Renal Cortical Lipids And Electrolytesin Rabbits With Cisplatin-Induced Nephrotoxicity, Abdelgayoum Ahmed Abdel-Gayoum, Mohamed Hamza Sulaiman Ahmida
Turkish Journal of Medical Sciences
Background/aim: Cisplatin is an anticancer drug that can induce nephrotoxicity. Its toxicity is associated with dyslipidemia and disturbed electrolyte balance. In the present study we investigated the changes in serum lipid profile and electrolyte levels and their contents in kidney and liver tissues of rabbits treated with cisplatin. Materials and methods: Twenty-eight adult male New Zealand White rabbits were used in the experiment. Animals of groups C, P1, and P2 were injected with saline, cisplatin (4.0 mg/kg bw), and cisplatin (6.5 mg/kg bw), respectively, and killed 3 days after the injections. Animals of group R were given cisplatin (6.5 mg/kg …
The Effects Of Iloprost And Alprostadil On Ischemia-Reperfusion Injury In Preventing Inflammation, Tissue Degeneration, And Apoptosis In Rat Skeletal Muscle, Eli̇f Güneysu, Atacan Emre Koçman, Orhan Özati̇k, Cengi̇z Ovali, Betül Can, İbrahi̇m Özkan Alataş, Mustafa Behçet Sevi̇n
The Effects Of Iloprost And Alprostadil On Ischemia-Reperfusion Injury In Preventing Inflammation, Tissue Degeneration, And Apoptosis In Rat Skeletal Muscle, Eli̇f Güneysu, Atacan Emre Koçman, Orhan Özati̇k, Cengi̇z Ovali, Betül Can, İbrahi̇m Özkan Alataş, Mustafa Behçet Sevi̇n
Turkish Journal of Medical Sciences
Background/aim: The protective effects of prostaglandin (PG) analogs on ischemia-reperfusion (I/R) have been well documented; however, comparative studies are lacking. The aim of the present study was to determine whether iloprost or alprostadil is more effective in preventing muscle I/R injury. Materials and methods: Thirty-two rats were divided into four groups (n = 8): sham, control, IL (I/R + iloprost), and AL (I/R + alprostadil). I/R was induced by a tourniquet in the hindlimb for 3 h/3 h. The IL and AL groups received iloprost (0.5 ng kg-1 min-1) and alprostadil (0.05 μg kg-1 min-1) during reperfusion, respectively. After 6 …
Antiinflammatory And Antioxidant Effects Of Gemcitabinein Collagen-Induced Arthritis Model, Adi̇le Ferda Dağli, Ahmet Karataş, Cemal Orhan, Mehmet Tuzcu, Meti̇n Özgen, Kazi̇m Şahi̇n, Süleyman Serdar Koca
Antiinflammatory And Antioxidant Effects Of Gemcitabinein Collagen-Induced Arthritis Model, Adi̇le Ferda Dağli, Ahmet Karataş, Cemal Orhan, Mehmet Tuzcu, Meti̇n Özgen, Kazi̇m Şahi̇n, Süleyman Serdar Koca
Turkish Journal of Medical Sciences
Background/aim: Gemcitabine (GEM) has antiproliferative effects on lymphocytes, which are potent pathogenic actors of rheumatoid arthritis (RA). The aim of the study was to investigate the therapeutic potential of GEM on collagen-induced arthritis (CIA). Materials and methods: Arthritis was induced by the intradermal injection of chicken type II collagen with incomplete Freund's adjuvant into albino Wistar rats. Doses of 5 and 20 mg/kg GEM were administered twice a week after the 14th day, which marked the onset the arthritis. Serum IL-17, TNF-α, malondialdehyde, catalase, superoxide dismutase (SOD), and glutathione peroxidase (GPx) levels and tissue heme oxygenase-1 (HO-1) and nuclear factor …
Comparison Of Endothelin And Nitric Oxide Synthase Blockerson Hemorheological Parameters In Endotoxemic Rats, Nesli̇han Hacer Di̇kmenoğlu Falkmarken, Okan Arihan, Alper Bektaş İski̇t
Comparison Of Endothelin And Nitric Oxide Synthase Blockerson Hemorheological Parameters In Endotoxemic Rats, Nesli̇han Hacer Di̇kmenoğlu Falkmarken, Okan Arihan, Alper Bektaş İski̇t
Turkish Journal of Medical Sciences
Background/aim: Septic shock is an important health problem that vastly alters cardiovascular and hemodynamic status. Increased production of nitric oxide (NO) and endothelin is a counterpart of this endotoxemic state. This study was conducted to test the hypothesis that nonselective NO synthesis blocker (L-NAME), inducible NO synthesis blocker (L-canavanine), or endothelin receptor antagonist (bosentan) will reverse the effects of sepsis on hemorheological parameters. Materials and methods: Forty-eight male Sprague-Dawley rats were used in 8 groups: saline (control), endotoxin, bosentan, L-NAME, L-canavanine, endotoxin + bosentan, endotoxin + L-NAME, and endotoxin + L-canavanine. Blood was withdrawn at the 4th hour of endotoxemic …
The Knowledge And High Seroprevalence Of Hepatitis A In A High-Risk Group(Agricultural Reproductive-Aged Women) In The Southeastern Region Of Turkey, Nebi̇ye Yentür Doni̇, Zeynep Şi̇mşek, Gülcan Gürses, Fadi̇le Yildiz Zeyrek, Muhsi̇n Akbaba
The Knowledge And High Seroprevalence Of Hepatitis A In A High-Risk Group(Agricultural Reproductive-Aged Women) In The Southeastern Region Of Turkey, Nebi̇ye Yentür Doni̇, Zeynep Şi̇mşek, Gülcan Gürses, Fadi̇le Yildiz Zeyrek, Muhsi̇n Akbaba
Turkish Journal of Medical Sciences
Background/aim: The aim of this study was to determine the seroprevalence of antihepatitis A virus (HAV), risk factors, and the knowledge of female farm workers living in the Southeastern Anatolia Region (SAR) of Turkey. Materials and methods: This representative cross-sectional survey was conducted between January and April of 2013 in the SAR. A total of 705 reproductive-aged women were randomly selected by clustering method using Epi Info software. The sera were analyzed for anti-HAV antibodies using ELISA. Sociodemographic information and the knowledge of female farm workers regarding hepatitis A were collected using a questionnaire. Results: Of the female farm workers, …
Risk Factors For Colistin-Associated Nephrotoxicity And Mortality In Critically Ill Patients, Hüseyi̇n Özkarakaş, Işil Köse, Çi̇ler Zi̇nci̇rci̇oğlu, Si̇bel Ersan, Gürsel Ersan, Ni̇met Şenoğlu, Şükran Köse, Riza Hakan Erbay
Risk Factors For Colistin-Associated Nephrotoxicity And Mortality In Critically Ill Patients, Hüseyi̇n Özkarakaş, Işil Köse, Çi̇ler Zi̇nci̇rci̇oğlu, Si̇bel Ersan, Gürsel Ersan, Ni̇met Şenoğlu, Şükran Köse, Riza Hakan Erbay
Turkish Journal of Medical Sciences
Background/aim: Colistin is gaining popularity against multidrug-resistant bacteria. The primary concern with colistin is its nephrotoxicity (NT). The aim of this study was to evaluate the incidence and risk factors for NT and to evaluate the risk factors for mortality in the toxicity group. Materials and methods: NT was defined according to the RIFLE criteria. Data of patients who did or did not develop NT were compared. Positive and negative predictive values, risk ratio, and correlation coefficients were calculated. Results: NT was seen in 39 patients (70%). Hypoalbuminemia, old age, and the use of vasopressors (VPs) were associated with NT. …
Evaluation Of Lipid Profiles In Patients Treated With Capecitabine, Nursel Sürmeli̇oğlu, Semra Paydaş, Yusuf Karataş, Gülşah Seydaoğlu
Evaluation Of Lipid Profiles In Patients Treated With Capecitabine, Nursel Sürmeli̇oğlu, Semra Paydaş, Yusuf Karataş, Gülşah Seydaoğlu
Turkish Journal of Medical Sciences
Background/aim: Capecitabine is a prodrug of 5-fluorouracil and has shown significant antitumor activity. The main adverse effects are hand-foot syndrome, diarrhea, and dermatitis. In recent years, hypertriglyceridemia has been reported in patients treated with capecitabine. Dyslipidemia is a rare but important side effect of capecitabine. The aim of this study is to examine the changes in lipid levels during capecitabine treatment and to raise awareness of pharmacovigilance. Materials and methods: In this retrospective study, it was aimed to analyze lipid metabolism after capecitabine treatment and is intended to contribute to the formation of a pharmacoepidemiological database. For this purpose, triglyceride, …
Comparison Of The Cardioprotective Effects Of Dexmedetomidineand Remifentanil In Cardiac Surgery, Medi̇ha Türktan, Yasemi̇n Güneş, Hafi̇ze Yaliniz, Selçuk Matyar, Zehra Hati̇poğlu, Ersel Güleç, Uğur Göçen, Atakan Atalay
Comparison Of The Cardioprotective Effects Of Dexmedetomidineand Remifentanil In Cardiac Surgery, Medi̇ha Türktan, Yasemi̇n Güneş, Hafi̇ze Yaliniz, Selçuk Matyar, Zehra Hati̇poğlu, Ersel Güleç, Uğur Göçen, Atakan Atalay
Turkish Journal of Medical Sciences
Background/aim: Myocardial protection is an important factor of open heart surgery and biological biomarkers (lactate, CKMB, cardiac troponin I, and pyruvate) are used to assess myocardial damage. This study compares the effects of dexmedetomidine and remifentanil on myocardial protection during coronary artery bypass grafting (CABG) surgery. Materials and methods: Patients scheduled for elective CABG surgery (n = 60) were included in this study. Anesthesia induction was introduced with propofol, fentanyl, and vecuronium bromide. Anesthesia was maintained with remifentanil infusion and sevoflurane in the remifentanil group (Group R) and with dexmedetomidine infusion and sevoflurane in the dexmedetomidine group (Group D). Blood …
Effect Of Treatment Of Iron Deficiency Anemia Onhemoglobin A1c In Type 2 Diabetic Patients, Ensieh Nasli-Esfahani, Bagher Larijani, Peyvand Amini, Robabeh Ghodsi Ghasemabadi, Rezvan Razmandeh
Effect Of Treatment Of Iron Deficiency Anemia Onhemoglobin A1c In Type 2 Diabetic Patients, Ensieh Nasli-Esfahani, Bagher Larijani, Peyvand Amini, Robabeh Ghodsi Ghasemabadi, Rezvan Razmandeh
Turkish Journal of Medical Sciences
Background/aim: Iron deficiency anemia (IDA) affects hemoglobin A1c (HbA1c) levels. This study aimed to evaluate the effect of treatment of iron deficiency anemia on hemoglobin A1c in type 2 diabetic patients.Materials and methods: Ninety type 2 diabetes mellitus (T2DM) patients with IDA were included in a randomized, placebo-controlled, single-blind clinical trial. The intervention group (n = 45) received 200 mg/day oral iron for 3 months and the control group (n = 45) received an oral placebo for the same period. Fasting blood sugar, complete blood count, and HbA1c were measured for all subjects at the beginning and the end of …
Combined Oral Supplementation Of Chromium Picolinate, Docosahexaenoic Acid, And Boron Enhances Neuroprotection In Rats Fed A High-Fat Diet, Cemal Orhan, Nurhan Şahi̇n, Zeynep Tuzcu, James R. Komorowski, Kazi̇m Şahi̇n
Combined Oral Supplementation Of Chromium Picolinate, Docosahexaenoic Acid, And Boron Enhances Neuroprotection In Rats Fed A High-Fat Diet, Cemal Orhan, Nurhan Şahi̇n, Zeynep Tuzcu, James R. Komorowski, Kazi̇m Şahi̇n
Turkish Journal of Medical Sciences
Background/aim: A novel complex of a nutritional supplement (CDB) contains chromium picolinate (CrPic), phosphatidylserine (PS), docosahexaenoic acid (DHA), and boron (B). The present study aimed to investigate the effects of CDB on the metabolic profile and memory acquisition in rats fed a high-fat diet (HFD). Materials and methods: Male Wistar rats were divided into six groups and received either a regular diet or HFD supplemented with or without different levels of CDB (0, 11, or 22 mg/kg BW). Results: Rats fed the HFD had greater glucose, insulin, lipid profile, and serum malondialdehyde concentrations, but lower serotonin and tryptophan in the …
Dna Methylation Of The Prestin Gene And Outer Hair Cell Electromotileresponse Of The Cochlea In Salicylate Administration*, Erdoğan Bulut, Meti̇n Budak, Levent Öztürk, Mehmet Turgay Türkmen, Cem Uzun, Tammam Si̇pahi̇
Dna Methylation Of The Prestin Gene And Outer Hair Cell Electromotileresponse Of The Cochlea In Salicylate Administration*, Erdoğan Bulut, Meti̇n Budak, Levent Öztürk, Mehmet Turgay Türkmen, Cem Uzun, Tammam Si̇pahi̇
Turkish Journal of Medical Sciences
Background/aim: Activity of the prestin gene may have a role in the pathogenesis of salicylate-induced ototoxicity. We investigated DNA methylation for prestin gene exon 1 in salicylate-injected guinea pigs.Materials and methods: Fifteen guinea pigs (30 ears) underwent audiological evaluation including 1000 Hz probe-tone tympanometry and a distortion product otoacoustic emission (DPOAE) test. The animals were randomly divided into three groups. Groups 2 (8 ears) and 3 (14 ears) were injected with intramuscular saline and sodium salicylate (200 mg/kg), respectively twice daily for 2 weeks. Group 1 (8 ears) received no injection. DPOAE measurements were performed at baseline; after 1, 2, …
The Effects Of Mesenchymal Stem Cells On The Structure And Contractile Force Of The Carotid Artery In A Rat Aneurysm Model, Özbeyen Atalay, Handan Sevi̇m, Seçi̇l Karahi̇sar Turan, Mehmet Ali̇ Onur, Özer Ayli̇n Gürpinar
The Effects Of Mesenchymal Stem Cells On The Structure And Contractile Force Of The Carotid Artery In A Rat Aneurysm Model, Özbeyen Atalay, Handan Sevi̇m, Seçi̇l Karahi̇sar Turan, Mehmet Ali̇ Onur, Özer Ayli̇n Gürpinar
Turkish Journal of Medical Sciences
Background/aim: An aneurysm is a pathological enlargement of an artery characterized by the thinning of the elastic fiber layer in the tunica media. Because the aneuritic artery wall is weakened, these vessels can rupture and cause serious bleeding. Surgical methods are often used for the treatment of aneurysms. However, cell-based therapies are less invasive and potentially safer alternatives. In this study, the therapeutic efficacy of rat adipose tissue-derived mesenchymal stem cells (MSCs) was investigated in a new carotid artery aneurysm model.Materials and methods: Arteries were pretreated with elastase to create aneurysms. Gelatin matrices containing MSCs were applied to the outer …
Exogenous Erythropoietin Aggravates Retinal Neovascularizationin A Murine Model Of Proliferative Retinopathy, Ning Yang, Wenxi Zhang, Tao He, Yiqiao Xing
Exogenous Erythropoietin Aggravates Retinal Neovascularizationin A Murine Model Of Proliferative Retinopathy, Ning Yang, Wenxi Zhang, Tao He, Yiqiao Xing
Turkish Journal of Medical Sciences
Background/aim: Erythropoietin (EPO) has been proven recently to be a critical mediator in retinal neovascularization (RNV). Previous studies have indicated that the use of recombinant human EPO (rEPO) is a high risk factor in the development of retinopathy of prematurity. In this study, we aimed to investigate the effect of rEPO administration on RNV and its underlying mechanism in a mouse model of oxygen-induced retinopathy (OIR). Materials and methods: A murine model of OIR was used to generate RNV. After daily intraperitoneal injection of rEPO from postnatal day 12 (P12), mice were euthanized at P17. Whole-mount retina staining was used …
Reply To Letter To The Editor, Ju Tae Sohn
Reply To Letter To The Editor, Ju Tae Sohn
Turkish Journal of Medical Sciences
No abstract provided.
Histopathological Effects Of Mesenchymal Stem Cells In Ratswith Bladder And Posterior Urethral Injuries, Berat Di̇lek Demi̇rel, Ünal Biçakci, Riza Rizalar, Ferda Alpaslan Pinarli, Oğuz Aydin
Histopathological Effects Of Mesenchymal Stem Cells In Ratswith Bladder And Posterior Urethral Injuries, Berat Di̇lek Demi̇rel, Ünal Biçakci, Riza Rizalar, Ferda Alpaslan Pinarli, Oğuz Aydin
Turkish Journal of Medical Sciences
Background/aim: To evaluate the effects of mesenchymal stem cell (MSC) therapy in an experimental bladder and posterior urethral injury model. Materials and methods: The study subjects consisted of 40 male Wistar albino rats that were divided into four groups: control group (n = 10) (the bladder was only surgically opened and closed), sham group (n = 10) (surgical procedure), IVMSC group (n= 10) (surgical procedure and intravenous MSC treatment), and LMSC group (n = 10) (surgical procedure and local MSC treatment). Histopathological evaluation was performed for the degree of fibrosis and inflammation and the extent and intensity of staining of …
Interleukin-6 And Hepcidin Expression Changes In Cardiac Tissue Of Long-Term Trained And Untrained Rats After Exhaustive Exercise, Badegül Sarikaya, Ali̇ Doğan Dursun, Elçi̇n Yağmur Taylan Deveden, Lamia Pinar
Interleukin-6 And Hepcidin Expression Changes In Cardiac Tissue Of Long-Term Trained And Untrained Rats After Exhaustive Exercise, Badegül Sarikaya, Ali̇ Doğan Dursun, Elçi̇n Yağmur Taylan Deveden, Lamia Pinar
Turkish Journal of Medical Sciences
Background/aim: Exercise benefits the cardiovascular system, but strenuous exercise can cause cardiac damage and induce cytokine production, particularly that of interleukin-6 (IL-6). Hepcidin, which is primarily regulated by IL-6, increases after exercise. Hepcidin is a possible protective factor against the adverse effects of strenuous exercise such as oxidative stress. The aim of the study is to reveal that training increases hepcidin and attenuates increased levels of IL-6 in the hearts of exhaustively exercised rats by comparing the IL-6 and hepcidin mRNA expression levels in trained and untrained groups.Materials and methods: Thirty male Wistar albino rats were assigned to the following …
Effects Of N-Acetylcysteine On Ovarian Tissue Autografted Intogranulation Tissue Compared To Back Muscle In Rats, Farideh Daneshpoya, Mojtaba Karimipour, Masoumeh Zirakjavanmard, Bagher Pourheydar
Effects Of N-Acetylcysteine On Ovarian Tissue Autografted Intogranulation Tissue Compared To Back Muscle In Rats, Farideh Daneshpoya, Mojtaba Karimipour, Masoumeh Zirakjavanmard, Bagher Pourheydar
Turkish Journal of Medical Sciences
Background/aim: Ovarian transplantation can preserve fertility in cancer patients. The aim of this study was to compare ovarian transplantation into granulation tissue (GT) versus back muscle (BM) sites and also to investigate the effects of N-acetylcysteine (NAC) as an antioxidant on ovarian survival in a rat autograft model.Materials and methods: Twenty-eight adult female rats were divided into four equal groups (n = 7 each) as follows: Group 1, ovarian tissue grafted into GT + saline (GT + saline); Group 2, ovarian tissue grafted into GT + NAC (GT + NAC); Group 3, ovarian tissue grafted into BM + saline (BM …
Role Of Hygienic Factors In The Etiology Of Allergic Disorders In Children, Şule Yeşi̇l, Ahmet Kan, Olkar Abdulmajed, Arzu Bakirtaş, Mahmut Nedi̇m Sultan, Mehmet Sadik Demi̇rsoy
Role Of Hygienic Factors In The Etiology Of Allergic Disorders In Children, Şule Yeşi̇l, Ahmet Kan, Olkar Abdulmajed, Arzu Bakirtaş, Mahmut Nedi̇m Sultan, Mehmet Sadik Demi̇rsoy
Turkish Journal of Medical Sciences
Background/aim: We investigated the role of body flora and chronic inflammatory infections in the etiology of allergic disorders in Turkish children. Materials and methods: Forty pediatric asthma patients with positive skin prick tests and 40 age-matched healthy subjects with negative skin prick tests were enrolled in this cross-sectional study. Serum H. pylori IgG, viral hepatitis serology, IL-10, and TGF-beta levels were measured. Stool and throat cultures were taken and tested for occurrence of microorganisms. Results: A significantly higher percentage of nonatopic subjects tested positive for anti-H. pylori antibodies compared to atopic subjects (60% vs. 20%). Serum IL-10 levels were also …
Combination Therapy With Dendritic Cell-Based Vaccine And Anti-Cd69 Antibodyenhances Antitumor Efficacy In Renal Cell Carcinoma-Bearing Mice, Si Ming Wei, Hang Li Pan, Li Wang, Guo Li Yin, Kai Zhong, Ya Zhou, Shu Jiao Yang, Zhao Liang Xin
Combination Therapy With Dendritic Cell-Based Vaccine And Anti-Cd69 Antibodyenhances Antitumor Efficacy In Renal Cell Carcinoma-Bearing Mice, Si Ming Wei, Hang Li Pan, Li Wang, Guo Li Yin, Kai Zhong, Ya Zhou, Shu Jiao Yang, Zhao Liang Xin
Turkish Journal of Medical Sciences
Background/aim: Dendritic cell-based vaccine therapy for renal cell carcinoma is effective but requires improvement. Here we explored whether combination therapy with dendritic cell-based vaccine and anti-CD69 antibody can enhance antitumor efficacy in renal cell carcinoma-bearing mice. Materials and methods: Balb/c mice were challenged subcutaneously with murine renal cell carcinoma (Renca) cells. On day 3 after tumor cell inoculation, tumor-bearing mice either were left untreated or were treated with Renca tumor lysate-pulsed dendritic cells (i.e. dendritic cell-based vaccine), anti-CD69 antibody, or a combination of Renca tumor lysate-pulsed dendritic cells with anti-CD69 antibody. The mice were sacrificed on day 28. Tumor volume …
Rho/Rho-Kinase Signalling In Chronically Alcohol-Fed Mice, Havva Kubat, Ahmet Sencer Yurtsever, Kansu Büyükafşar
Rho/Rho-Kinase Signalling In Chronically Alcohol-Fed Mice, Havva Kubat, Ahmet Sencer Yurtsever, Kansu Büyükafşar
Turkish Journal of Medical Sciences
Background/aim: The effects of chronic ethanol consumption on male sexual function are debateable, and its effects on the Rho/ Rho-kinase pathway are unknown. Therefore, we investigated smooth muscle reactivity and Rho/Rho-kinase signalling in the corpus cavernosum of ethanol-fed mice. Materials and methods: Ethanol was added to drinking water at 5% concentration in the first 2 days with 5% increment every subsequent 2 days, up to a final concentration of 20% for 45 days. Corpora cavernosa were isolated and a cumulative dose-response curve to phenylephrine was obtained. Acetylcholine (10-6 M), electrical field stimulation (EFS, 40 V, 8-16 Hz) and Y-27632 (10-6-10-5 …
Iris Nevus Diagnosis: Convolutional Neural Network And Deep Belief Network, Oyebade Oyedotun, Adnan Khashman
Iris Nevus Diagnosis: Convolutional Neural Network And Deep Belief Network, Oyebade Oyedotun, Adnan Khashman
Turkish Journal of Electrical Engineering and Computer Sciences
This work presents the diagnosis of iris nevus using a convolutional neural network (CNN) and deep belief network (DBN). Iris nevus is a pigmented growth (tumor) found in the front of the eye or around the pupil. It is seen that racial and environmental factors affect the iris color (e.g., blue, hazel, brown) of patients; hence, pigmented growths may be masked in the eye background or iris. In this work, some image processing techniques are applied to images to reinforce areas of interests in them, after which the considered classifiers are trained. We describe the automated diagnosis of iris nevus …
A 3d Simulation Of The Formation Of Primary Platelet Thrombi Based On A Hybrid Computational Model, Chaoqing Ma, Oubong Gwun
A 3d Simulation Of The Formation Of Primary Platelet Thrombi Based On A Hybrid Computational Model, Chaoqing Ma, Oubong Gwun
Turkish Journal of Electrical Engineering and Computer Sciences
Recently, the study of thrombosis simulation based on computational models has been one of the most popular research areas. In this paper, a 3D simulation method based on a hybrid model is proposed for platelet thrombus formation. The flow of platelets is modeled in a macroscale submodel using Navier--Stokes equations and the physiological processes such as adhesion and aggregation of platelets are modeled in a microscale submodel. In the adhesion and aggregation phases, the attraction of platelets due to blood coagulation factors (von Willebrand factor) is modeled using the external force, and the conversion from unstable aggregation to stable aggregation …
Truncation Thresholds: A Pair Of Spike Detection Thresholds Computed Using Truncated Probability Distributions, Murat Okatan, Mehmet Kocatürk
Truncation Thresholds: A Pair Of Spike Detection Thresholds Computed Using Truncated Probability Distributions, Murat Okatan, Mehmet Kocatürk
Turkish Journal of Electrical Engineering and Computer Sciences
We describe a method for computing a pair of spike detection thresholds, called `truncation thresholds', using truncated probability distributions, for extracellular recordings. In existing methods the threshold is usually set to a multiple of an estimate of the standard deviation of the noise in the recording, with the multiplication factor being chosen between 3 and 5 according to the researcher's preferences. Our method has the following advantages over these methods. First, because the standard deviation is usually estimated from the entire recording, which includes the spikes, it increases with firing rate. By contrast, truncation thresholds decrease in absolute value with …
Dynamics Of A Predator-Prey System With A Mate-Finding Allee Effect On Prey, Ruiwen Wu, Xiuxaing Liu
Dynamics Of A Predator-Prey System With A Mate-Finding Allee Effect On Prey, Ruiwen Wu, Xiuxaing Liu
Turkish Journal of Mathematics
We consider a predator--prey system with nonmonotonic functional response and a hyperbolic type of mate-finding Allee effect on prey. A detailed mathematical analysis of the system, including the stability and a series of bifurcations (a saddle-node, a Hopf, and a Bogdanov--Takens bifurcation), has been given. The mathematical results show that the system is highly sensitive to the parameters and initial status. It exhibits a stable limit cycle, or different types of heteroclinic curves, or a homoclinic loop when parameters take suitable values.
Edge Distance Graph Kernel And Its Application To Small Molecule Classification, Mehmet Tan
Edge Distance Graph Kernel And Its Application To Small Molecule Classification, Mehmet Tan
Turkish Journal of Electrical Engineering and Computer Sciences
Graph classification is an important problem in graph mining with various applications in different fields. Kernel methods have been successfully applied to this problem, recently producing promising results. A graph kernel that mostly specifies classification performance has to be defined in order to apply kernel methods to a graph classification problem. Although there are various previously proposed graph kernels, the problem is still worth investigating, as the available kernels are far from perfect. In this paper, we propose a new graph kernel based on a recently proposed concept called edge distance-k graphs. These new graphs are derived from the original …
Application Of Reinforcement Learning For Active Noise Control, Seyed Amir Hoseini Sabzevari, Majid Moavenian
Application Of Reinforcement Learning For Active Noise Control, Seyed Amir Hoseini Sabzevari, Majid Moavenian
Turkish Journal of Electrical Engineering and Computer Sciences
Active noise control (ANC) systems are used to reduce the sound noise level by generating antinoise signals. M-Estimators are widely employed in ANC systems for updating the adaptive FIR filter taps used as the system controller. Observing the state-of-the-art M-estimators design shows that there is a need for further improvements. In this paper, a feedback ANC based on the reinforcement learning (RL) method is proposed. The sensitivity of the constant parameter in the RL method is checked. The effectiveness of the proposed method is proven by comparing the results with previous feedforward studies through computer simulations.
Study On The Recognition Method Of Airport Perimeter Intrusion Incidents Based On Laser Detection Technology, Huazhu Wu, Zengcai Wang, Changyou Wang
Study On The Recognition Method Of Airport Perimeter Intrusion Incidents Based On Laser Detection Technology, Huazhu Wu, Zengcai Wang, Changyou Wang
Turkish Journal of Electrical Engineering and Computer Sciences
Currently, detection technology is very important for airport perimeter security. When the perimeter is invaded or destroyed, the perimeter security alarm system can promptly alert personnel. In this paper, based on analysis and comparison of several detection technologies commonly used in airport perimeter security and according to the characteristics of airport perimeters and laser detection, an airport perimeter security alarm system based on laser detection is proposed. It analyzes factors that affect the performance of a laser alarm system, divides intrusions into six categories, estimates the different alarm thresholds by testing, and judges the intrusion category according to the number …