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Full-Text Articles in Medicine and Health Sciences
Comparison Of Some Kinetic Properties Of Pyruvate Kinase In Liver Tissue Of Normal And Diabetic Rats, Seval Yilmaz
Comparison Of Some Kinetic Properties Of Pyruvate Kinase In Liver Tissue Of Normal And Diabetic Rats, Seval Yilmaz
Turkish Journal of Veterinary & Animal Sciences
Diabetes mellitus was induced in Wistar-Albino type male rats with a single dose of streptozotocin (60 mg/kg intraperitoneally). The kinetic properties of pyruvate kinase were investigated in normal and diabetic rat liver tissue. In normal rat liver tissue, the incubation period of pyruvate kinase was 15 min and the optimum pH was 8. In diabetic rat liver tissue, the incubation period of pyruvate kinase was 10 min and the optimum pH was 7. Activation was found in normal and diabetic rat liver tissues with magnesium chloride and potassium chloride. Phospho(enol)pyruvate is an enzyme substrate; in the absence of the fructose-1,6-diphosphate …
Effects Of Ramadan Fasting On Stroke, Selçuk Çomoğlu, Ahmet Temi̇zhan, Emel Peşi̇nci̇, İzzet Tandoğan, Şenay Özbakir
Effects Of Ramadan Fasting On Stroke, Selçuk Çomoğlu, Ahmet Temi̇zhan, Emel Peşi̇nci̇, İzzet Tandoğan, Şenay Özbakir
Turkish Journal of Medical Sciences
The effects of fasting on humans have not been adequately investigated. Ramadan fasting is a great opportunity for scientific research due to its peculiar nature. With this in mind, we conducted research on the effects of Ramadan on stroke, which is one of the most common causes of death in adults. Patients hospitalized solely for ischemic stroke and intracerebral hemorrhage were evaluated retrospectively. The ratio of these cases to other patients hospitalized in the neurology department was determined. The in-hospital clinical course and mortality rates of the patients with stroke were evaluated. Within the entire cohort, the most frequently encountered …
A Cell Protective Mechanism In A Murine Model Of Parkinson's Disease, Emi̇n Öztaş, Turgut Topal
A Cell Protective Mechanism In A Murine Model Of Parkinson's Disease, Emi̇n Öztaş, Turgut Topal
Turkish Journal of Medical Sciences
Parkinson's disease is characterized by progressive degeneration of the dopaminergic (DA) neurons in the substantia nigra (SN). However, the mechanism underlying DA cell death remains unclear. While apoptotic cell death has been implicated in DA cell death in Parkinson's disease, autophagy - a regulated cellular process for degrading intracellular proteins and organelles under stress - in Parkinson's disease is not known. Here, we report evidence of autophagy in DA neurons of the SN in a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) model of Parkinson's disease. Mice were treated with saline or MPTP (40 mg/kg) and sacrificed after 7 days, and brain tissue samples were …
Lecithin:Cholesterol Acyltransferase Activity And Cholesteryl Ester Transfer Rate In Patients With Diabetes Mellitus, Melahat Di̇ri̇can, Zehra Serdar, Emre Sarandöl, Esma Sürmen Gür
Lecithin:Cholesterol Acyltransferase Activity And Cholesteryl Ester Transfer Rate In Patients With Diabetes Mellitus, Melahat Di̇ri̇can, Zehra Serdar, Emre Sarandöl, Esma Sürmen Gür
Turkish Journal of Medical Sciences
Several factors may be responsible for the high prevalence of atherosclerosis in diabetes mellitus, including alterations in reverse cholesterol transport. In the present study, the activity of plasma lecithin:cholesterol acyltransferase (LCAT) and the cholesteryl ester transfer rate, and concentrations of lipids and lipoproteins were measured in 11 patients with insulin-dependent diabetes mellitus (type 1), 42 patients with noninsulin-dependent diabetes mellitus (type 2) and compared with those in age-matched control groups (Control I, n = 14; and Control II, n = 29, respectively). No statistically significant differences were observed in plasma total cholesterol, triglyceride, ester cholesterol or very low density lipoprotein …
Determination Of Alkaline Phosphatase Activity In Patients With Different Zinc Metabolic Disorders, Zine Kechrid, Rabah Kenouz
Determination Of Alkaline Phosphatase Activity In Patients With Different Zinc Metabolic Disorders, Zine Kechrid, Rabah Kenouz
Turkish Journal of Medical Sciences
Our purpose was to investigate the effect of different zinc metabolic disorders on alkaline phosphatase activity. Serum zinc, glucose and alkaline phosphatase activity were studied in 32 patients with liver cirrhosis, 30 with chronic renal failure and 42 with insulin-dependent diabetes mellitus (IDDM) compared to 42 healthy volunteers. Serum glucose concentration was significantly higher (P < 0.001) in IDDM and liver cirrhosis patients (P < 0.05) compared to the controls. Serum zinc concentrations tended to be lower in all different diseases but did not reach statistical significance. Alkaline phosphatase activity was higher in IDDM (P < 0.05) and liver cirrhosis patients (P < 0.01) compared with the controls. No positive correlation between serum zinc and alkaline phosphatase activity was recorded in any disease. In conclusion, the investigated diseases did not affect the level of serum zinc; however, there was an alteration in alkaline phosphatase activity in patients suffering from diabetes and liver cirrhosis. Consequently, this may be attributed to the functional disturbance that occurred in these patients. Finally, zinc concentration did not follow alkaline phosphatase activity as indicated by the weak correlation obtained.