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Öğe Acute intoxication cases admitted to the emergency department of a university hospital(Zhejiang Univ Sch Medicine, 2015) Kaya, Ertuğrul; Yılmaz, Aylin; Sarıtaş, Ayhan; Çolakoğlu, Serdar; Baltacı, Davut; Kandiş, Hayati; Kara, İsmail HamdiBACKGROUND: This study aimed to describe the clinical and socio-demographic aspects of acute poisoning in 2010 in Duzce City, Northwest Anatolian Region of Turkey. METHODS: Acute poisoning was due to the intentional ingestion of drugs in young and adult people (>= 16), who were treated at the Emergency Service of Duzce University Medical Hospital, Turkey from January 1, 2010 to December 31, 2010. In this retrospective and descriptive study, 95 patients were diagnosed with intoxications and 30 of them intentionally ingested drugs to commit suicide. Records of the patients diagnosed with intoxication were obtained from the Clinical Archive of the hospital. Their diagnoses were established according to the International Statistical Classification of Diseases and Related Health Problems. Codes X60-X84 of this classification were used to classify self-infringed drug injuries and drug poisoning. RESULTS: In this series, 35 (36.8%) patients were male and 60 patients (63.2%) female. The male/female ratio was 1.0/1.7. The mean age of the patients was 33.1 +/- 14.2 years; 17 (17.9%) patients were below 20 years old and 9 (9.5%) were older than 50 years. Of these patients, 29 (30.5%) were single, 7 (7.4%) divorced or separated, and 59 (62.1%) married. Their mean time for admission to the emergency service after the incident was 208 +/- 180 (15-660) minutes. The mean time for admission to the emergency service for patients with food intoxication after the incident was 142 +/- 160 minutes, for those with drug intoxication 173 +/- 161 minutes, for those with carbon monoxide (CO) intoxication 315 +/- 209 minutes, and for those with undefined intoxication 289 +/- 166 minutes (P=0.005). Most of the intoxication cases occurred in winter (41.1%, 39 of 95 patients). Admissions to the emergency service were most common in December and April (21 and 16 of 95 patients, respectively). Sixty-five (68.4%) cases were involved in non-deliberate poisoning, whereas 30 (31.6%) were involved in deliberate poisoning. Twenty-six of the 95 patients with acute poisonings had mortality risk at admission, however only one died from CO intoxication in the emergency service (1.1%). Suicide attempts were more common in females than in males (21 of 30 patients, 70%, P<0.05). CONCLUSION: In Duzce City of Turkey, most intoxication cases occurred in winter, especially in December. They had non-deliberate poisoning, but deliberate poisoning in suicide attempts was more common in females than in males.Öğe Allergic contact dermatitis to para-phenylenediamine in a tattoo: a case report(Informa Healthcare, 2013) Turan, Hakan; Okur, Mesut; Kaya, Ertuğrul; Gün, Emrah; Aliağaoğlu, CihangirIt is highly popular among children and young adults to have temporary henna tattoos on their bodies in different colors and figures. Henna is a greenish natural powder obtained from the flowers and dry leaves of Lawsonia alba plant and its allergenicity is very low. Henna is also used in combination with other coloring substances such as para-phenylenediamine in order to darken the color and create a permanent tattoo effect. Para-phenylenediamine is a substance with high allergenicity potential and may cause serious allergic reactions. Here, we aimed to draw attention to the potential harms of para-phenylenediamine containing temporary tattoos by presenting a child patient who developed allergic contact dermatitis after having a scorpion-shaped temporary tattoo on his forearm.Öğe Amanitin and phallotoxin concentration in Amanita phalloides var. alba mushroom(Pergamon-Elsevier Science Ltd, 2013) Kaya, Ertuğrul; Yılmaz, İsmail; Sinirlioğlu, Zeynep Aydın; Karahan, Selim; Bayram, Recep; Yaykaşlı, Kürşat Oğuz; Severoğlu, ZekiAlthough rarely seen, Amanita phalloides var. alba, a variety of A. phalloides type mushrooms, causes mushroom poisoning resulting in death. Since it is frequently confused with some edible mushrooms due to its white colored cap and macroscopic appearance, it becomes important in toxicological terms. Knowledge of the toxin amount contained in this mushroom type is invaluable in the treatment of cases involving poisoning. In this study, we examined the toxin levels of various parts of the A. phalloides var. alba mushroom growing Duzce region of Turkey. Toxin analyses were carried out for A. phalloides var. alba, which were collected from the forests Duzce region of Turkey in 2011, as a whole and also separately in its spore, pileus, gills, stipe and volva parts. The alpha amanitin, beta amanitin, gamma amanitin, phalloidin and phallacidine analyses of the mushrooms were carried out using the RP-HPLC method. A genetic analysis of the mushroom showed that it had similar genetic characteristics as A. phalloides and was a variety of it. The lowest toxins quantity was detected in spores, volva and stipe among all parts of the mushroom. The maximum amount of amatoxins was measured in the gills. The pileus also contained a high amount of amatoxins. Generally, amatoxins and phallotoxin concentrations were lower as compared to A. phalloides, but interestingly all toxins other than gamma toxin were higher in the spores of A. phalloides var. alba. The amount of toxin in all of its parts had sufficient concentrations to cause death. With this study, the amatoxin and phallotoxin concentrations in A. phalloides var. alba mushroom and in its parts have been revealed in detail for the first time. (C) 2013 Elsevier Ltd. All rights reserved.Öğe Amatoxin and phallotoxin concentration in Amanita phalloides spores and tissues(Sage Publications Inc, 2015) Kaya, Ertuğrul; Karahan, Selim; Bayram, Recep; Yaykaşlı, Kürşat Oğuz; Çolakoğlu, Serdar; Sarıtaş, AyhanMost of the fatal cases of mushroom poisoning are caused by Amanita phalloides. The amount of toxin in mushroom varies according to climate and environmental conditions. The aim of this study is to measure -, -, and -amanitin with phalloidin and phallacidin toxin concentrations. Six pieces of A. phalloides mushrooms were gathered from a wooded area of Duzce, Turkey, on November 23, 2011. The mushrooms were broken into pieces as spores, mycelium, pileus, gills, stipe, and volva. -, -, and -Amanitin with phalloidin and phallacidin were analyzed using reversed-phase high-performance liquid chromatography. As a mobile phase, 50 mM ammonium acetate + acetonitrile (90 + 10, v/v) was used with a flow rate of 1 mL/min. C18 reverse phase column (150 x 4.6 mm; 5 mu m particle) was used. The least amount of -amanitin toxins was found at the mycelium. The other toxins found to be in the least amount turned out to be the ones at the spores. The maximum amounts of amatoxins and phallotoxin were found at gills and pileus, respectively. In this study, the amount of toxin in the spores of A. phalloides was published for the first time, and this study is pioneering to deal with the amount of toxin in mushrooms grown in Turkey.Öğe Assessment of patients who presented to the emergency department with mushroom poisoning(Sage Publications Ltd, 2015) Çolak, Şahin; Kandiş, Hayati; Afacan, Mustafa Ahmet; Erdoğan, Mehmet Özgür; Güneş, Harun; Kaya, Ertuğrul; Sarıtaş, AyhanObjective: This study aimed to assess the demographic characteristics, emergency department (ED) complaints, laboratory findings, and latent phase periods of patients who presented to the ED due to mushroom poisoning (MP) as well as the efficacy of conventional and hemofiltration therapies. Method: The study was conducted on patients who presented to the ED with MP between 2010 and 2012. The patient's demographic characteristics, complaints at the ED, latent phases, laboratory findings, and treatments of MP cases were evaluated. Results: The mean age of patients was 38.03 15.96, where 63.8% of them were female and 36.2% were male. Visits occurred most frequently in the autumn (32.6%). When presenting to the ED, the most frequent complaint was nausea-vomiting. The aspartate aminotransferase (AST), alanine aminotransferase (ALT), international normalised ratio (INR), and blood urea nitrogen values of patients with a latent phase between 0 h and 5 h were significantly lower than the values of patients with a latent phase between 6 h and 24 h. In this study, 62% of the patients (n = 36) had stomach lavage and received activated charcoal. Altogether, 55.2% of the patients had received conventional therapy, 37.9% of them received hemofiltration, and all of them received supportive treatment. The AST, ALT, and INR values of those who had received hemofiltration and conventional therapies were significantly higher than of those who received only supportive treatment (p < 0.01). Conclusion: Hemofiltration, in combination with conventional therapy, seems to be an effective treatment for reducing mortality in suspected MP cases involving late acting toxins.Öğe Assessment of the corrosion behaviour of untreated and chemically treated pure magnesium in simulated body fluid(Taylor & Francis Ltd, 2022) Gerengi, Hüsnü; Cabrini, Marina; Solomon, Moses M.; Kaya, ErtuğrulThe corrosion behaviour of pure Mg in simulated body fluid (SBF) and the effect of chemical treatment on the corrosion resistance property were investigated using DEIS (dynamic electrochemical impedance spectroscopy), EIS (electrochemical impedance spectroscopy), PDP (potentiodynamic polarization), SEM (scanning electron microscopy), AFM (atomic force microscope), and pH measurement techniques for 30 h. NaOH or H2O2 were utilized for the chemical treatment. The DEIS was used for the first time in the investigation of Mg corrosion in SBF. Results obtained disclosed that the chemical treatment benefitted the anticorrosion property immensely. Results from both the electrochemical and surface analysis techniques are consistent.Öğe Association of omentin Val109Asp polymorphism with coronary artery disease(Turkish Soc Cardiology, 2014) Yörük, Ümit; Yaykaşlı, Kürşat Oğuz; Özhan, Hakan; Memişoğulları, Ramazan; Karabacak, Ahmet; Bulur, Serkan; Kaya, ErtuğrulObjective: Coronary artery disease (CAD) is the most important morbidity and mortality disease in the world. It is also one of the leading causes of death in Turkey. Omentin, a recently found adipocytokine, is reported to regulate insulin sensitivity. It has anti-inflammatory properties and is inversely associated with CAD. Omentin gene polymorphism in patients with CAD has not been studied yet. The aim of this study is to investigate the relationship between omentin Val109Asp polymorphism and CAD. Methods: This is an observational study on genetic association. 157 consecutive patients who had undergone coronary angiography were included in the study. Seventy-five of them had CAD and the rest serves the control group. Val109Asp polymorphism was analyzed and compared. Chi-square test was used in comparison of genotype frequencies, whereas ANOVA and chi-square tests were used in comparison of clinical characteristics according to the genotypes. Results: There was no significant difference between CAD patients and control subjects regarding omentin Val109Asp polymorphism. However, a 2.5 fold increase in Val/Val (homozygous mutant) genotype was detected in patients with CAD. The OR (80% Cl) for Val/Val genotype was 3.46 (1.14-10.49). Conclusion: Although no significant difference was detected regarding omentin Val109Asp polymorphism, Val/Val genotype frequency was found to be more in patient group than control group. In conclusion, it may be speculated that Val/Val genotype increases the tendency for CAD, but this experiment should done with larger population to clarify this issue.Öğe Bazı Antidepresan ve Antiepileptik İlaçların İnsan Kanında Eş Zamanlı Analizi için LC-MS/MS Yöntemi Geliştirilmesi(2019) Temel, Mehmet Kamil; Aksu, Osman; Kaya, Ertuğrul; Dönmez, Mert; Ergun, ÜmitBu çalışmada, sık kullanılan antidepresan ilaç etken maddeleri olan Paroksetin, Sitolapram, Essitolapram,Venlafaksin ile antiepileptik ilaç etken maddeleri olan Karbamazepin ve Oxkarbamazepin moleküllerinin tayiniiçin, insan kanında Sıvı Kromatografisi-Kütle Spektrometresi (LC-MS/MS) cihazı ile basit, hızlı ve güvenilirolan bir metot geliştirilmiştir. Her bir ilaç etken maddesi için geri kazanım, doğruluk, yüzde bağıl standart sapma(%RSD), gözlenebilme sınırı (LOD) ve alt tayin sınırı (LOQ) gibi bazı analitik parametrelerin belirlenip,ölçülebilir en düşük değerlerin yüksek hassasiyet ile en kısa sürede eş zamanlı olarak yapılması amaçlanmıştır.Etken maddelerin her biri için belirlenen konsantrasyonlarda; LOD değerleri 0,06-0,36 ng.mL-1, LOQ değerleriise 0,21-1,21 ng.mL-1aralığında elde edilmiştir. Gün içi tekrarlanabilirlik değerlerinde %RSD sonuçları 0,15-10,71 ng.mL-1, günler arası tekrarlanabilirlik değerlerinde ise %RSD sonuçları 0,23-13,75 ng.mL-1 aralığındabulunmuştur.Öğe Branch Retinal Vein Occlusion Associated with Tamoxifen Use(Informa Healthcare, 2013) Önder, Halil İbrahim; Kılıç, Ali Çağrı; Köse, Seyit Ali; Karataş, Ahmet; Kaya, Ertuğrul; Kaya, Murat; Tunç, MuratTamoxifen is a selective estrogen receptor modulator widely used in the treatment of hormone-responsive breast cancer. Tamoxifen-induced ocular complications are very rare. A post-menopausal woman with carcinoma of the left breast had presented with sudden loss of vision. The patient had been on tamoxifen therapy 20 mg daily for the last three years. Fundus examination showed left branch retinal vein occlusion. Fluorescein angiography and optical coherence tomography confirmed the diagnosis. Tamoxifen therapy was discontinued. Although branch retinal vein occlusion is rare, careful evaluation of patients on tamoxifen therapy with visual symptoms is required.Öğe A Case Study: Rare Lepiota brunneoincarnata Poisoning(Elsevier Science Inc, 2015) Köse, Murat; Yılmaz, İsmail; Akata, Ilgaz; Kaya, Ertuğrul; Güler, KerimAmatoxin poisoning from the genus Lepiota may have a deadly outcome, although this is not seen as often as it is from the genus Amanita. In this report, we present a patient who was poisoned by a sublethal dose of Lepiota brunneoincarnata mushrooms. The patient was hospitalized 12 hours after eating the mushrooms. The patient's transaminase levels increased dramatically starting on day 4. Aspartate transaminase peaked at 78 hours. Starting at 1265 IU/L, alanine transaminase peaked at 90 hours at 5124 IU/L. The patient was discharged on day 8 to outpatient care, and his transaminase levels returned to normal ranges in the subsequent days. A toxin analysis was carried out on the mushrooms that the patient claimed to have eaten. Using reversed-phase high-performance liquid chromatography analysis, an uptake of approximately 19.9 mg of amatoxin from. nearly 30 g of mushrooms was calculated. This consisted of 10.59 mg of alpha-amanitin, 9.18 mg of beta-amanitin, and 0.16 mg of gamma-amanitin In conclusion, we present a patient from Turkey who was poisoned by L. brunneoincamata mushrooms.Öğe A Case Study: What Doses of Amanita phalloides and Amatoxins Are Lethal to Humans?(Elsevier Science Inc, 2015) Yılmaz, İsmail; Ermiş, Fatih; Akata, Ilgaz; Kaya, ErtuğrulThere are few data estimating the human lethal dose of amatoxins or of the toxin level present in ingested raw poisonous mushrooms. Here, we present a patient who intentionally ingested several wild collected mushrooms to assess whether they were poisonous. Nearly 1 day after ingestion, during which the patient had nausea and vomiting, he presented at the emergency department. His transaminase levels started to increase starting from hour 48 and peaking at hour 72 (alanine aminotransferase 2496 IU/L; aspartate aminotransferase 1777 IU/L). A toxin analysis was carried out on the mushrooms that the patient said he had ingested. With reversed-phase high-performance liquid chromatography analysis, an uptake of approximately 21.3 mg amatoxin from nearly 50 g mushroom was calculated; it consisted of 11.9 mg alpha amanitin, 8.4 mg beta amanitin, and 1 mg gamma amanitin In the urine sample taken on day 4, 2.7 ng/mL alpha amanitin and 1.25 ng/mL beta amanitin were found, and there was no gamma amanitin. Our findings suggest that the patient ingested approximately 0.32 mg/kg amatoxin, and fortunately recovered after serious hepatotoxicity developed.Öğe Chemical, Electrochemical, and Surface Morphological Studies of the Corrosion Behavior of the AZ31 Alloy in Simulated Body Fluid: Effect of NaOH and H2O2 Surface Pretreatments on the Corrosion Resistance Property(Amer Chemical Soc, 2022) Gerengi, Hüsnü; Cabrini, Marina; Solomon, Moses M.; Kaya, Ertuğrul; Gritti, Luca; Yola, Mehmet LutfiMagnesium and its alloys have attracted attention for biomedical implant materials in dental and orthopedic applications because of their biodegradability and similar properties to human bones. The very high rate of degradation in the physiological systems is, however, a major setback to their utilization. Chemical modification is one of the approaches adopted to enhance the corrosion resistance property of Mg and its alloys. In this work, NaOH and H2O2 were used as a pretreatment procedure to improve the corrosion resistance of the AZ31 Mg alloy in simulated body fluid (SBF). Advanced techniques such as dynamic electrochemical impedance spectroscopy (dynamic-EIS), atomic force microscopy, and optical profilometry were used in addition to the classical mass loss, hydrogen evolution, EIS, and polarization techniques to study the corrosion resistance property of the alloy in SBF for 30 h. Results obtained show that the surface treatment significantly enhanced the corrosion resistance property of the alloy. From dynamic-EIS at 30 h, the charge transfer resistance of the untreated AZ31 Mg alloy is 432.6 omega cm(2), whereas 822.7 and 2617.3 omega cm(2) are recorded for NaOH-and H2O2-treated surfaces, respectively. H2O2 is a better treatment reagent than NaOH. The mechanism of corrosion of both untreated and treated samples in the studied corrosive medium has been discussed.Öğe Clinical importance of toxin concentration in Amanita verna mushroom(Pergamon-Elsevier Science Ltd, 2014) Yılmaz, İsmail; Kaya, Ertuğrul; Sinirlioğlu, Zeynep Aydın; Bayram, Recep; Sürmen, Mustafa Gani; Çolakoğlu, SerdarPoisoning from Amanita group of mushrooms comprises approximately 3% of all poisonings in our country and their being responsible for nearly the entire fatal mushroom poisonings makes them important. These mushrooms contain primarily two types of toxins, amatoxins and phallotoxins. Phallotoxins have a more limited toxicity potential and they primarily consist of phalloidin (PHN) and phallacidin (PCN). Amatoxins, on the other hand, are very toxic and they primarily consist of alpha-amanitin (AA), beta-amanitin (BA) and gamma-amanitin (GM. Toxin levels can vary among various species, even among varieties of the same species, of Amanita mushroom family. Revealing the differences between the toxin compositions of the Amanita species that grow in our region may contribute to the clinics of poisonings. Our study aims at showing in detail the toxin levels in various parts of Amanita verna mushroom. A. verna mushrooms needed for toxin analysis were collected from Kozak Plateau near Ayvalik county of Balikesir, Turkey in April 2013. The mushrooms were divided into their parts as pileus, gills, stripe and volva. Following the procedures required before the analysis, the AA, BA, GA, PHN and PCN levels were measured using the RP-HPLC method. While the lowest level of amatoxin was in the volva of the mushroom, the highest was measured in the gills. This was followed by pileus and stripe where the levels were close to each other. Similarly, the highest level of phallotoxin was measured in the gills. Gamma toxin and phalloidin were at lower amounts than the other toxins. A. verna is frequently confused with edible mushrooms with white caps due to its macroscopic similarity. If just one of them is eaten by mistake by an adult person with no mushroom experience, it can easily poison them. The amount of amatoxin is more as compared to Amanita phalloides and A. phalloides var. alba. Particularly, the AA and BA levels are approximately three times higher, whereas GA levels are lower. Similarly, the level of PCN is approximately four times higher as compared to A. phalloides and A. phalloides var. alba; by contrast, the level of PNH is about a half of theirs. In summary, it can be said that A. verna is a more toxic mushroom than A. phalloides and has a higher rate of mortality. With our study, the amatoxin and phallotoxin concentrations and distribution in A. verna mushrooms were shown in detail for the first time and it would be useful to carry out more similar studies with other members of Amanita family growing in various parts of the world. (C) 2014 Elsevier Ltd. All rights reserved.Öğe Comparison of Changes in Anxiety and Depression Level Between Dabigatran and Warfarin Use in Patients With Atrial Fibrillation(Sage Publications Inc, 2017) Türker, Yasin; Ekinözü, İsmail; Aytekin, Seda; Türker, Yasemin; Başar, Cengiz; Baltacı, Davut; Kaya, ErtuğrulWe hypothesized that patients taking warfarin require frequent hospital follow-up and they are at higher risk for complications, so the incidence of depression and anxiety is higher in patients with atrial fibrillation (AF) in the period of taking warfarin compared to the period of taking dabigatran. Fifty patients having AF without valvular diseases under treatment of warfarin in whom a transition to dabigatran was planned were consecutively enrolled in this study and followed up prospectively between July 2013 and July 2014. All patients completed Beck Depression Inventory and Hamilton Anxiety Scale (HAS) at the initiation of study and 6 months after initiation of study. Of the patients enrolled in the study, age, gender, smoking status, and comorbidities were questioned. A total of 50 patients (28 women; mean age 74.6 +/- 8.7 years) treated with warfarin in whom a transition to dabigatran was planned were included. Basal mean value of BDS (15.6 +/- 7.8 vs 11.5 +/- 4.8, P < .001) and HAS (16.8 +/- 10.4 vs 12.6 +/- 8.1, P < 0.001) was significantly higher in patients when they used warfarin than when they switched to dabigatran. In categorical analysis, frequency of patients with depression (mild, moderate, and severe) was significantly higher in period of warfarin use than after dabigatran transition (n = 24, 48% vs n = 14, 28%, P = .039). Our study demonstrates that patients with nonvalvular AF under treatment of dabigatran had lower BDS and HAS scores compared to warfarin. These findings suggest that dabigatran may increase quality of life and decrease morbidity and mortality due to reduction in anxiety and depression.Öğe Dermal absorption and toxicity of alpha amanitin in mice(Informa Healthcare, 2014) Kaya, Ertuğrul; Sürmen, Mustafa Gani; Yaykaşlı, Kürşat Oğuz; Karahan, Selim; Oktay, Murat; Turan, Hakan; Erdem, HavvaThe fungus Amanita phalloides is known to contain two main groups of toxins: amanitins and phallotoxins. The amanitins group effectively blocks the RNA polymerase II enzyme found in eukaryotic cells. As alpha amanitin has a lethal effect on the majority of eukaryotic cells, it can be valuable as an antiparasitic or antifungal drug. It can be used externally against ectoparasites. It is critical that percutaneous applications of the alpha amanitin toxin are not harmful to the recipient. In this study, the absorption and the toxicity of percutaneous and intraperitoneal (ip) applications of 1 mg/kg alpha amanitin to mice were compared. Potential skin, liver and kidney toxicities were investigated through pathological examination. HPLC analysis was used to determine the amount of the toxin. No toxicity or toxin were found in the skin, liver, or kidneys of the mice in the control group. Interestingly, the percutaneous application group also showed no toxicity, and the toxin was not present in this group. After 24 h, Councilman-like bodies and pyknotic cells were observed in the mice in which alpha amanitin was applied intraperitoneally, demonstrating the presence of toxicity. Peak levels of alpha amanitin (mu g/mL) in the liver, kidney, and blood in the ip application group were measured at 3.3 (6 h), 0.2 (6 h) and 1.2 (1 h), respectively. The results demonstrated that the toxin was not absorbed through the skin of the mice and that the percutaneous application of alpha amanitin did not have any toxic effects. Thus, alpha amanitin may be administered percutaneously for therapeutic purposes.Öğe Determination of histological, immunohistochemical and biochemical effects of acute and chronic grayanotoxin III administration in different doses in rats(Springer Heidelberg, 2019) Doğanyiğit, Züleyha; Silici, Sibel; Demirtaş, Abdullah; Kaya, Ertuğrul; Kaymak, EminGrayanotoxin (GTX)-III is a Na-channel neurotoxin. Grayanotoxins can be found in the nectar, pollen, and other plant parts of the Rhododendron genus plants from the Ericaceae family. It is widely believed that honey produced from these plants, which are concentrated in the Black Sea region, is traditionally characterized as enhancing sexual performance. It is thought that the effective factor is dose for this compound, which has both beneficial and toxic effects reported. Therefore, it is aimed to evaluate the histological, immunohistochemical, and biochemical effects of acute and chronic impact of GTX-III in different doses on testes tissue in this study. For this purpose, 100 Sprague-Dawley male rats were divided into 5 separate groups for acute and chronic research. While dose groups were (control, 0.1, 0.2, 0.4, ve 0.8g/kg/bw) for experimental groups, a single dose (i.p.) was administered for acute impact whereas the same doses were administered daily for 3weeks to assess chronic effect. At the end of the experiment, Johnsen testicular biopsy scoring was performed on testicular tissue samples, seminiferous tubule diameters were measured, and apoptotic cells were evaluated by TUNEL method. Testosterone, LH, and FSH levels were measured by ELISA method in serum and tissue specimens. It was found that Johnsen score of acute doses was significantly lower than the control group, and the diameter of the seminiferous tubules decreased significantly in acute and chronic dose-administered groups compared to the control. Hemorrhage, epithelial shedding, irregularity in seminiferous epithelium, and vacuolization were observed in acute and chronic dose-administered groups, and increase in apoptotic cells was determined. Hormone levels varied depending on the dose. In conclusion, it was found that dose-dependent acute and chronic effects of GTX-III are different, and this factor should be taken into account in studies to be carried out due to the adverse effects of high doses.Öğe The dose-dependent cardiovascular effects of intravenous grayanotoxin-III in rats(Dr Behcet Uz Cocuk Hastaliklari Ve Cerrahisi, 2017) Yılmaz, İsmail; Kaya, Ertuğrul; Yaykaşlı, Kürşat Oğuz; Türker, YasinObjective: The mad honey poisonings are commonly seen in our country. The source of the toxin in mad honey is plants of Rhododendron species. Grayanotoxin-III type toxin is commonly found in these plants. Clinical effects of this toxin are bradycardia, atrioventricular block, asystole, hypotension and symptoms such as salivation. In this study; different doses of grayanotoxin-III were intravenously administered to rats (i.v) and the effect of grayanotoxin on cardiovascular system was evaluated. Methods: This study was performed on 42 Wistar albino rats and the animals were divided into six groups. Control, Group 1 (5 mu g/kg), Group 2 (10 mu g/kg), Group 3 (20 mu g/kg), Group 4 (50 mu g/kg) and Group 5 (100 mu g/kg) groups were formed. Baseline values for electrocardiography (ECG), arterial blood pressure and respiratory rate were obtained and recorded for 60 minutes after administration of i.v. grayanotoxin-III. Results: Group1 (5 mu g/kg) was not significantly changed in all time periods. In 10 and 20 mu g/kg groups, respiratory rates, peak heart rates decreased significantly and drop in arterial blood pressures was observed after 2nd and 5th minutes. While 25 minutes after administration of i.v. grayanotoxin-III all parameters returned to baseline values again. In 50 and 100 mu g/kg grayanotoxin-III groups all parameters fell sharply from 2 minutes on, and rats died within 5-10 minutes. Conclusion: In conclusion, it was found that the lethal dose of grayanotoxin-III for rats is 50 mu g/kg. In addition the death was developed due to cardiac arrest. In case of the lower level of 5 mu g/kg grayanotoxin-III, any toxic effect was not seen. The effects of toxin apparently lasted nearly 25 minutes.Öğe Dose-dependent effects of adiponectin on ADAMTS-9 gene expression in human chondrocytes(Comenius Univ, 2017) Yaykaşlı, Kürşat Oğuz; Hatipoğlu, Ömer Faruk; Yaykaşlı, Emine; Kaya, Ertuğrul; Özşahin, Mustafa; Uslu, MustafaOBJECTIVE: A disintegrin and metalloproteinase with thrombospondin motifs (ADAMTS), comprising of 19 members is a family of peptidases. They have several vital functions in physiological and pathological processes in organisms. ADAMTS-9 has aggrecanolytic activity and is responsible for degradation of aggrecan mainly in articular cartilage. It is known that adiponectin is the most abundantly secreted adipokine (adipocytokines), and the characteristics of adiponectin have not been elucidated yet. It was assumed that adiponectin has anti-inflammatory effect before. However, an inflammatory feature of adiponectin was shown in researches. In our study, the effect of adiponectin on ADAMTS-9 gene expression in primary human chondrocytes was investigated. METHODS: Primary human chondrocytes were exposed to adiponectin at 1, 4, 8 and 12 mu g/ml doses for certain time period. Total RNA was isolated and reverse-transcribed by random primer after incubation. ADAMTS-9 and beta-actin genes expression levels were determined using real-time polymerase chain reaction (qRT-PCR). RESULTS: The highest upregulation of ADAMTS-9 gene expression level was found at 12 mu g/ml dose of adiponectin and 48 h incubation. CONCLUSION: Adiponectin is the key element in the maintenance of cartilage homeostasis. Similarly, the involvement of adiponectin in articular inflammatory diseases was demonstrated in detail. These findings bring adiponectin into central place in the research to develop adiponectin based new therapy methods for arthritic diseases. Together with these findings, our results suggest that adiponectin may be involved in the degradation of articular cartilage by increasing ADAMTS-9 gene expression (Tab. 1, Fig. 3, Ref. 35). Text in PDF www.elis.sk.Öğe Düzce Yöresinde Yetişen Amanita Phalloides Mantarındaki Alfa Amanitin Düzeyinin Hplc Yöntemiyle Ölçümü(2012) Kaya, Ertuğrul; Karahan, Selim; Hancı, Mustafa; Yaykaşlı, Kürşat Oğuz; Sarıtaş, Ayhan; Bayram, Recep; Arslan, Seyfullah OktayAmaç: Düzce ili sınırlarında 2010 yılında toplanan Amanita phalloides mantarındaki alfa amanitin toksin düzeyinin HPLC yöntemiyle ölçümü amaçlanmıştır. Yöntem: Bir mantar bütün olarak, diğeri ise parçalara ayrılarak ekstraksiyon yapılmıştır. Ölçümler HPLC cihazında 303 nm UV dalga boyu, 250x4,6 mm C18 5 µm partikül içeren kolon kullanılarak gerçekleştirilmiştir. Mobil faz olarak amonyum asetat metanol asetonitril (801010, v/v/v) kullanılmış ve akış hızı 1 mL/dakikaya ayarlanmıştır. Sonuçlar 1 g kuru mantardaki toksin miktarı olarak verilmiştir. Bulgular: Bütün mantardaki alfa amanitin miktarı 4,806 mg (0,033), şapkada 3,522 mg (0,024), lamelde 5,318 mg (0,056), halkada 0,903 mg (0,004), sapta 2,577 mg (0,037), kapçıkta 0,698 mg (0,008) olarak ölçüldü. Sonuç: Düzce yöresinde yetişen Amanita phalloides mantarlarındaki alfa amanitin düzeyleri, başka bölgelerde yetişenlerden farklılık göstermektedir. Bulduğumuz sonuçlardan daha yüksek ve daha düşük seviyede toksin düzeyi ölçülmüş araştırmalar literatürde mevcuttur. Bu farklılığın etkenleri arasında iklim şartları yanında ekstraksiyon ve analiz yöntemlerindeki farklılıklar da rol oynayabilir.Öğe Early Stage Muscarinic Findings and Syndromic Classification in Wild Mushroom Poisoning(Galenos Yayincilik, 2018) Yılmaz, Hakan; Kazbek, Baturay Kansu; Kaya, Ertuğrul; Akata, Ilgaz; Köksoy, Ülkü Ceren; Tüzüner, FilizMushroom poisoning is a frequently encountered health problem around the globe. Depending on its type and toxin, it results in a wide spectrum of issues that range from asymptomatic findings to fatal organ failure. Since the toxin of the mushroom leading to poisoning is often unidentified, syndromic classification may benefit clinical management according to the findings of target organ system toxicity. A 64-year-old female patient with comorbidities such as diabetes mellitus, coronary artery disease, hypertension and hyperlipidemia was admitted to the intensive care unit. Approximately four hours after consuming wild mushrooms the patient's diarrhea, muscle cramps, cold sweating, blurry vision, coughing and shortness of breath complaints have been begun. Her respiratory system examination revealed tachypnea, generalized bilateral rhonchus, bronchorrhea and wheezing. Patient was normotensive and had bradycardia (heart rate 35 beats/minute). She had anxiety and the Glasgow Coma score was 15. Her pupillary bilateral isochoric, miotic and light reflexes were diminished. In her arterial blood gas pH level 7.26, partial carbon dioxide pressure: 34 mmHg, potassium: 5.3 mmol/L, sodium: 130 mmol/L, lactate: 5.3 mmol/L, bicarbonate: 16 mEq/L and base excess: -10,3 mmol/L was found. Target organ system toxicity findings and timing of occurrence indicated early-onset cholinergic syndrome. Treatments that consisted of intravenous atropine, fluid, electrolytes and sodium bicarbonate alleviated the toxicity in a short period of time. Late mycologic examination results that followed the treatment revealed that the patient was poisoned by Inocybe lacera, a mushroom type that contains muscarine. With this case presentation, we summarized the syndromic classification that we use in the clinical management in the light of current information in the literature.
