Electrooxidation of physostigmine at different electrodes

824-829The elcctrooxidation of physostigmine (PHY) has been investigated at different pH values at platinum, ruthenium, carbon paste and glassy carbon electrodes. It has been found that Ru and Pt electrodes played an important role in the oxidation. The nature of the curves are strongly dependent upon the scan rate, supporting electrolyte and the pH values of the solutions. With glassy carbon electrode, the results are highly dependent upon the activation process of the  electrode. Activated glassy carbon and oxidized Pt and Ru electrodes give the best results. Suitable mechanisms for oxidation of PHY in both acidic and basic media have been proposed

Crystal Structure Of {Bis[N-(2-Hydroxyethylamino)Ethylsalicylaldiminato]-Iron(Iii)} Chloride

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Gingival Crevicular Fluid MMP-8 and-13 and TIMP-1 Levels in Patients With Rheumatoid Arthritis and Inflammatory Periodontal Disease

WOS: 000269024700015PubMed ID: 19656031Background: The purpose of this study was to compare gingival crevicular fluid (GCF) levels of matrix metalloproteinase (MMP)-8 and -13 and tissue inhibitor of MMP (TIMP)-1 in patients with rheumatoid arthritis (RA) and systemically healthy counterparts with inflammatory periodontal disease. Methods: Subjects (N = 74) were divided into five groups: 12 patients with RA and gingivitis; 13 patients with RA and periodontitis; 12 systemically healthy patients with gingivitis; 13 systemically healthy patients with periodontitis; and 24 periodontally and systemically healthy volunteers. Full-mouth clinical periodontal measurements were performed at six sites/tooth. GCF samples obtained from two sites in single-rooted teeth were analyzed by immunofluorometric assay and enzyme-linked immunosorbent assay. Data were assessed statistically by parametric tests. Results: The total amounts of MMP-8 were lower in the healthy control group than in RA-gingivitis, RA-periodontitis, and healthy-periodontitis groups (P0.05). Patients with RA and gingivitis or periodontitis exhibited levels of MMP-8 and -13 and TIMP-1 that were similar to systemically healthy counterparts (P>0.05). Conclusions: The coexistence of RA and periodontitis did not significantly affect the investigated parameters. GCF MMP-8 levels increased with periodontal inflammation. Despite the long-term usage of corticosteroids and non-steroidal anti-inflammatory drugs, similar GCF MMP-8 and -13 levels in patients with RA and systemically healthy counterparts suggest that RA may create a tendency to overproduce these enzymes. J Periodontol 2009;80:1307-1314

Ischemia modified albumin: does it change during pneumoperitoneum in robotic prostatectomies?

ABSTRACT Background The unique positioning of the patient at steep Trendelenburg with prolonged and increased intra-abdominal pressure (IAP) during robotic radical prostatectomy may increase the risk of splanchnic ischemia. We aimed to investigate the acute effects of IAP and steep Trendelenburg position on the level of ischemia modified albumin (IMA) and to test if serum IMA levels might be used as a surrogate marker for possible covert ischemia during robotic radical prostatectomies. Patients and Methods Fifty ASA I-II patients scheduled for elective robotic radical prostatectomy were included in this investigation. Exclusion criteria The patients were excluded from the study when an arterial cannulation could not be accomplished, if the case had to be converted to open surgery or if the calculated intraoperative bleeding exceeded 300ml. All the patients were placed in steep (45 degrees) Trendelenburg position following trocar placement. Throughout the operation the IAP was maintained between 11-14mmHg. Mean arterial blood pressure (MAP), cardiac output (CO) were continuously monitored before the induction and throughout the surgery. Blood gases, electrolytes, urea, creatinine, alanine transferase (ALT), aspartate transferase (AST) were recorded. Additionally, IMA levels were measured before, during and after surgery. Results (1) MAP, CO, lactate and hemoglobin (Hb) did not significantly change in any period of surgery (p>0.05); (2) sodium (p0.05) but mild acidosis was present in these patients (p<0.01 vs. after induction); (4) IMA levels were found to be comparable before induction (0.34±0.04), after induction (0.31±0.06) and at the end of surgery (0.29±0.05) as well. Conclusion We did not demonstrate any significant mesenteric-splanchnic ischemia which could be detected by serum IMA levels during robotic radical prostatectomies performed under steep Trendelenburg position and when IAP is maintained in between 11-14 mmH