Relationship Between The Levels of Growth Hormone, Leptin, Amylin, Glucagon Like Peptide-1 and Insulin Resistance in Obese Patients

Objective: The aim of this study is to determine the relationship between the levels of growth hormone, leptin, amylin, glucagon like peptide-1 and insulin resistance in obese patients

Survey about the education of the biochemistry specialists in Turkey

Objective: In this study we aimed at assessing the views and suggestions of biochemistry specialists working in Turkey on specialty education and determining to what extent their education remains insufficient

Reference Intervals for Serum Immunoglobulin (IGA, IGG, IGM) and IGG Subclasses in Healthy Subjects

Aim: Regional reference values of immunoglobulin and immunoglobulin subgroups are necessary for clinical research and diagnosis. A main problem in determining the reference intervals, reference values show variability depending on laboratory and technical conditions against interregional and reference populations. In clinical laboratories mainly test kit's reference intervals are used according to the manufacturer. In this study it is aimed to determine reference interval values of regional immunoglobulin and IgG subgroups

Association of ischemia-modified albumin with oxidative stress status and insulin resistance in obese patients

Objectives: Obesity is associated with oxidative stress due to the overproduction of free radicals in some accompanying states, such as hyperglycemia, elevated lipid levels and chronic inflammation. Free radical accumulation may modify the structure of human serum albumin, generating ischemia-modified albumin (IMA), and increased serum levels of IMA have been linked to obesity-related diseases and oxidative damage. The association of IMA levels with oxidative stress and insulin resistance (IR) has not been evaluated in the context of obesity. The aim of this study is to determine IMA levels in the context of obesity and their relationship with oxidative status and insulin resistance. Methods: Sixty-one adult obese cases with body mass index (BMI) ≥ 30 were evaluated, with 30 healthy adults with 18.5 ≤ BMI ≤ 24.9 included in the control group. IMA, total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI), total cholesterol, triglycerides, HDL and LDL-cholesterols were determined. Results: IMA, TAS, TOS, OSI, total cholesterol and LDL-cholesterol levels were not different between the control and obese groups (P-value >0.05), while triglyceride levels were determined to be higher and HDL-cholesterol levels were determined to be lower in the obese group (P-value 0.05), but the fasting blood glucose level was determined to be higher in the obese/IR(+) group than in the control group. Conclusions: We concluded that obesity and insulin resistance had no effect on IMA levels in the obese group, who showed no impairment in their oxidative balanc

Association of ischemia-modified albumin with oxidative stress status and insulin resistance in obese patients

Objectives: Obesity is associated with oxidative stress due to the overproduction of free radicals in some accompanying states, such as hyperglycemia, elevated lipid levels and chronic inflammation. Free radical accumulation may modify the structure of human serum albumin, generating ischemia-modified albumin (IMA), and increased serum levels of IMA have been linked to obesity-related diseases and oxidative damage. The association of IMA levels with oxidative stress and insulin resistance (IR) has not been evaluated in the context of obesity. The aim of this study is to determine IMA levels in the context of obesity and their relationship with oxidative status and insulin resistance. Methods: Sixty-one adult obese cases with body mass index (BMI) ≥ 30 were evaluated, with 30 healthy adults with 18.5 ≤ BMI ≤ 24.9 included in the control group. IMA, total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI), total cholesterol, triglycerides, HDL and LDL-cholesterols were determined. Results: IMA, TAS, TOS, OSI, total cholesterol and LDL-cholesterol levels were not different between the control and obese groups (P-value >0.05), while triglyceride levels were determined to be higher and HDL-cholesterol levels were determined to be lower in the obese group (P-value <0.05). When IMA, TAS, TOS, OSI levels were compared between the control/IR(-), obese/IR(+) and obese/IR(-) groups, no statistically significant differences were detected (P-value >0.05), but the fasting blood glucose level was determined to be higher in the obese/IR(+) group than in the control group. Conclusions: We concluded that obesity and insulin resistance had no effect on IMA levels in the obese group, who showed no impairment in their oxidative balanc

Eotaxin and Interleukin-4 Levels and Their Relation to Sperm Parameters in Infertile Men

Objective: Male factor infertility accounts for 30% to 50% of the total infertile couples seeking for infertility treatment. In about 40-60% of these men, a specific etiology can not be found. The aim of this study was to confirm the presence of eotaxin and interleukin-4 (IL-4) in human seminal plasma, to show the differences between eotaxin and IL-4 concentrations in fertile and infertile men, and to show the potential relationship between eotaxin and IL-4 levels in semen and spermiogram parameters. In literature, this is the first study that evaluates eotaxin in the human seminal plasma. Material and Methods: The participant of the study was 55 infertile males with abnormal semen parameters as study group and 16 healthy volunteers with normal sperm parameters as the control group. Semen samples were classified according to criteria of the World Health Organization Laboratory Manual. The Morphology of the smears was scored using Kruger's strict criteria. Seminal eotaxin and IL-4 levels were measured by bead based immunoassay multiplex methods. Results: Seminal eotaxin levels were significantly higher in infertilite group compared to fertile donors. There were negative correlations between eotaxin concentrations and parameters such as motility (r= -0.293, p< 0.01) and, +4 motility (r= -0.307, p< 0.01) in the study group. IL-4 levels were similar in fertile and infertile seminal plasma. There were positive correlations between eotaxin and IL-4 levels (r= 0.436 p< 0.01). The receiver operating characteristic curve (ROC) analysis revealed a diagnostic value for eotaxin activity with respect to male factor infetility in case group, with an area under curve of 0.69 (95% confidence interval= 0.55-0.84). Conclusion: Increased levels of eotaxin may play a role in the pathogenesis of male infertility

Eotaxin and Interleukin-4 Levels and Their Relation to Sperm Parameters in Infertile Men

Objective: Male factor infertility accounts for 30% to 50% of the total infertile couples seeking for infertility treatment. In about 40-60% of these men, a specific etiology can not be found. The aim of this study was to confirm the presence of eotaxin and interleukin-4 (IL-4) in human seminal plasma, to show the differences between eotaxin and IL-4 concentrations in fertile and infertile men, and to show the potential relationship between eotaxin and IL-4 levels in semen and spermiogram parameters. In literature, this is the first study that evaluates eotaxin in the human seminal plasma. Material and Methods: The participant of the study was 55 infertile males with abnormal semen parameters as study group and 16 healthy volunteers with normal sperm parameters as the control group. Semen samples were classified according to criteria of the World Health Organization Laboratory Manual. The Morphology of the smears was scored using Kruger's strict criteria. Seminal eotaxin and IL-4 levels were measured by bead based immunoassay multiplex methods. Results: Seminal eotaxin levels were significantly higher in infertilite group compared to fertile donors. There were negative correlations between eotaxin concentrations and parameters such as motility (r= -0.293, p< 0.01) and, +4 motility (r= -0.307, p< 0.01) in the study group. IL-4 levels were similar in fertile and infertile seminal plasma. There were positive correlations between eotaxin and IL-4 levels (r= 0.436 p< 0.01). The receiver operating characteristic curve (ROC) analysis revealed a diagnostic value for eotaxin activity with respect to male factor infetility in case group, with an area under curve of 0.69 (95% confidence interval= 0.55-0.84). Conclusion: Increased levels of eotaxin may play a role in the pathogenesis of male infertility