Thiol disulphide homeostasis in patients with acute myocardial infarction (AMI).

OBJECTIVE: To investigate novel oxidative stress marker thiol disulphide homeostasis in patients with acute myocardial infarction.. METHODS: The case-control study was conducted at Yildirim Beyazit University, Ankara, Turkey, between October 26, 2015 and January 26, 2016. It comprised patients of ST elevation myocardial infarction, and healthy individuals. Troponin levels, native thiol, total thiol, and disulphide were compared among the groups. Results: Of the 128 subjects, 98(76.5%) were patients and 30(23.43%) were controls. Disulphide levels were lower in the patients compared to the controls (p<0.001).As troponin levels increased, native thiol, total thiol and disulphide levels in patients decreased (p<0.05). RESULTS: Of the 128 subjects, 98(76.5%) were patients and 30(23.43%) were controls. Disulphide levels were lower in the patients compared to the controls (p<0.001).As troponin levels increased, native thiol, total thiol and disulphide levels in patients decreased (p<0.05). CONCLUSIONS: Native thiol and total thiol levels may be used as a novel oxidative stres marker in patients with acute myocardial infarction.

[The role of blood S100B and lactate levels in minor head traumas in children and adults and correlation with brain computerized tomography]. / Çocuk ve eriskin minör kafa travmalarinda kan S100B ile laktatin rolü ve bilgisayarli beyin tomografisi ile korelasyonu.

BACKGROUND: In this study, we aimed to set levels of blood S100B and lactate and to determine any correlation with brain computerized tomography in minor head traumas in children and adults. METHODS: This clinical trial is a prospective study including 100 head trauma patients who applied to Ankara Training and Research Hospital emergency service. RESULTS: In this study, cut-off ranges of 0.0-0.15 ug/ml and 0.9-1.7 mmol/L for blood S100B and lactate levels, respectively, were used. S100B level was higher than the cut-off range in 42% of patients and lactate level was higher in 56% of patients. No significant differences were determined between age groups. When the relation between S100B and lactate levels with brain CT was evaluated, no statistically significant relation was determined. CONCLUSION: According to our results, in minor head traumas, the determination of elevated serum S100B and lactate levels cannot take the place of clinical examination and the use of cranial CT. Although the patients in our study group had minor head trauma, we do not consider S100B and lactate to be reliable markers for estimating progression.

Elevated serum S100B protein and neuron-specific enolase levels in carbon monoxide poisoning.

OBJECTIVE: Carbon monoxide (CO) poisoning causes cerebral and generalized hypoxia. This study aimed to assess the possible use of serum glial marker S100B protein and neuron-specific enolase (NSE) as biochemical markers of hypoxic brain damage in acute CO poisoning. METHODS: Patients with acute CO poisoning admitted to the ED of 2 training hospitals (Ankara, Turkey) were included in this cross-sectional study. Serum levels of S100B and NSE were measured on admission. The patients were divided into 2 groups (unconscious and conscious). Twenty healthy adults were included in the study to serve as controls. RESULTS: A total of 70 patients poisoned by CO (mean age +/- SD, 36.6 +/- 16.3 years; 64.3% women) were enrolled. Although S100B concentrations were higher in patients than in the control group (P = .018), no significant difference was determined between patient and control groups with respect to NSE concentrations (P = .801). A positive correlation was noted between levels of S100B and NSE (r = 0.388; P = .001). The S100B and NSE values were higher in unconscious patients than in the control group (P = .002 and P = .013, respectively). Furthermore, S100B and NSE values were higher in unconscious vs unconscious patients (P = .047 and P = .005, respectively). CONCLUSION: Elevated serum S100B and NSE levels were associated with loss of consciousness in CO poisoning in this series of patients. Serum S100B and NSE may be useful markers in the assessment of clinical status in CO poisoning.