Acute effects of moderate and strenuous running on trace element distribution in the brain, liver, and spleen of trained rats

Objective: Trace elements such as manganese (Mn), cobalt (Co) and chromium (Cr) play key roles in metabolic reactions and are important in many physiological enzymatic processes. In this study, we aimed to investigate the acute effects of moderate and strenuous running (treadmill) exercise on the levels of Mn, Co and Cr in the brain, liver, and spleen of trained rats. Study Design: Animal experiment. Material and Methods: Twenty-one Wistar-Albino adult male rats were used in the study. Rats were grouped as control group (no mandated exercise; n=8), moderate exercise group (30 min exercise duration; n=7), and strenuous exercise group (60 min exercise duration; n=6). The levels of Mn, Co, and Cr in the frontal lobe, temporal lobe, brain stem, liver, and spleen were determined by atomic absorption spectrophotometer. Results: Cr levels in liver of rats increased in parallel to the time course of running supporting the exercise training effect on the action of insulin. Compared to the control group, the level of Co significantly decreased in the brain stem of rats in the moderate exercise group (p=0.009) and in the frontal lobe of rats in the strenuous exercise group (p=0.004). In the strenuous exercise group, an examination of the brain stem revealed that the level of Mn significantly decreased (p=0.001), and levels of Co and Cr were apparently depleted to the extent that these elements were no longer detectable. Conclusion: A notable finding is that during or after single bout strenuous exercise, levels of Co decreased in the spleen and particularly decreased in the brain stem of regularly trained rats. From this study, it can be inferred that sportsmen should aware trace element disturbances among the body parts or depletion of some trace elements after single bout of chronic strenuous running exercise. © Trakya University Faculty of Medicine

Effects of melatonin and acetylsalicylic acid against hepatic oxidative stress after bile duct ligation in rat

The aim of this study was to assess the effect of melatonin and acetylsalicylic acid (ASA) on hepatic damage induced by bile duct ligation (BDL) Material and methods : Male Sprague-Dawley rats were subjected to either sham operation or common BDL before treatment with ASA, melatonin or vehicle. Hepatic superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px) enzyme activities and reduced glutathione (GSH), malondialdehyde (MDA) and nitric oxide (NO) levels were evaluated. Results : Our results have indicated that BDL caused a significant increase in lipid peroxidation whereas a statistically insignificant decrease in GSH level and some of the antioxidant enzyme activities. Both MEL and ASA administrations, either separately or together, decreased MDA whereas co-administration of MEL with ASA increased GSH levels in BDL rats. Conclusions : CAT activity and MEL level decreased in the liver tissues of rats with BDL after administration of either melatonin alone or with ASA. However, melatonin and ASA administration increases liver tissue GSH levels in BDL ligated rats

Quickest detection of bias injection attacks on the glucose sensor in the artificial pancreas under meal disturbances

Modern glucose sensors deployed in closed-loop insulin delivery systems, so-called artificial pancreas use wireless communication channels. While this allows a flexible system design, it also introduces vulnerability to cyberattacks. Timely detection and mitigation of attacks are imperative for device safety. However, large unknown meal disturbances are a crucial challenge in determining whether the sensor has been compromised or the sensor glucose trajectories are normal. We address this issue from a control-theoretic security perspective. In particular, a time-varying Kalman filter is employed to handle the sporadic meal intakes. The filter prediction error is then statistically evaluated to detect anomalies if present. We compare two state-of-the-art online anomaly detection algorithms, namely the χ2 and CUSUM tests. We establish a robust optimal detection rule for unknown bias injections. Even if the optimality holds only for the restrictive case of constant bias injections, we show that the proposed model-based anomaly detection scheme is also effective for generic non-stealthy sensor deception attacks through numerical simulations.ISSN:0959-1524ISSN:1873-277

The evaluation of preoperative diagnostic approach to solitary pulmonary nodule with solid structure [Solid yapıdaki soliter pulmoner nodüle preoperatif tanısal yaklaşımın değerlendirilmesi]

Aim: Management of patients with solitary pulmonary nodules (SPN) after a thorough radiological evaluation may differ among different health centers. In this study in a set of radiologically solid SPN cases we aimed to compare the patients undergone surgical excision without histopathological evaluation with the patients undergone histopathological evaluation for decision of surgery. Material and Method: The patients diagnosed to have SPN between July 2009 and 2010 were retrospectively evaluated. Results: Among 42 patients enrolled in the study, 13 (%31) undergone diagnostic and therapeutic surgery (group 1), 29 (%69) undergone additional diagnostic procedures like bronchoscopy, transthoracic fine needle aspiration biopsy (TTFNAB), positron emission tomography (PET) or follow up computed tomography before decision of surgery. Malignant disease was detected in 29 cases (%69); 12 cases (%92) in group 1, and 17 (%58) cases in group 2 (p=0,035). In group 2, 11 patients (%37) were diagnosed or suspected to have malignant disease preoperatively and had proven malignancy by surgery. Out of 18 patients whose histopathological biopsy evaluation were nondiagnostic or benign, 6 (%33) had diagnosis of malignant disease after surgery, 11 patients (%61) were diagnosed to have benign disease by surgery of follow up, and 1 patient was lost in follow up. 33 patients (%79) undergone surgery among all SPN patients, 4 cases refused to have surgery although preoperative malignancy was detected or were inoperable due to comorbidities. 4 patients were thought to have benign disease in follow up period. All patients in both groups were hospitalized for diagnosis and treatment, except one patient in group 2. Medium hospitalization time was 11,76±4.22 days in group 1 and 17±12.21 in group 2 (p=0,09). Discussion: In patients that have radiologically solid SPN and that are thought to have malignant disease with preoperative radiological evaluation, additional diagnostic procedures and biopsies have limited diagnostic value and lengthens hospitalization times. In 1/3 of cases who undergone additional diagnostic procedures after detection of SPN, his-topathological diagnosis was false negative or insufficient. © 2015, Journal of Clinical and Analytical Medicine. All rights reserved

Investigation of LRRK2 G2019S mutation in the patients with sporadic Parkinson's disease in Turkey

Objective: Recently understanding genetic forms and pathogenic mutations has been providing growing knowledges about etiopathogenesis of Parkinson's disease. Leucine-rich repeat kinase 2 gene (LRRK2) G2019S mutation is the most commonly reported mutation amongst autosomal dominant and sporadic Parkinson's disease patients. Aims of our study are to identify the frequency of the LRRK2 G2019S mutation in sporadic late onset Parkinson's disease patients from the Eskisehir, diagnostic utility of this mutation and to confer genetic counselling to the mutation carier patients. Methods: We investigated 83 patients with sporadic Parkinson's disease and 50 normal (healty) controls unrelated to patients. LRRK2 exon 41 was investigated with direct sequencing method. Results: Any point mutation or polymorphism was not detected in the LRRK2 exon 41 amongst patients and control subjects. Conclusion: Our findings suggest that the frequency of LRRK2 G2019S mutation is very lower in Turkish patients with Parkinson's disease

Elements Levels And Glucose-6-Phosphate Dehydrogenase Activity In Blood Of Patients With Schizophrenia

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