Value of Caffeic Acid Phenethyl Ester Pretreatment in Experimental Sepsis Model in Rats

Background and Aim. The aim of this study was to determine the actions of caffeic acid phenethyl ester (CAPE) on the changes of endothelin-1 (ET-1) level, tumor necrosis factor- (TNF-) alpha, and oxidative stress parameters such as superoxide dismutase (SOD) activities and malondialdehyde (MDA) levels in experimental sepsis model in rats. Materials and Methods. Twenty-four rats were randomly divided into three experimental groups: sham (group 1), sepsis (group 2), and sepsis + CAPE (group 3), n = 8 each. CAPE was administered (10 µmol/kg) intraperitoneally to group 3 before sepsis induction. Serum ET-1, serum TNF-alpha, tissue SOD activity, and tissue MDA levels were measured in all groups. Results. Pretreatment with CAPE decreased ET-1, TNF-alpha, and MDA levels in sepsis induced rats. Additionally SOD activities were higher in rats pretreated with CAPE after sepsis induction. Conclusion. Our results demonstrate that CAPE may have a beneficial effect on ET and TNF-alpha levels and oxidative stress parameters induced by sepsis in experimental rat models. Therefore treatment with CAPE can be used to avoid devastating effects of sepsis

2006 IEEE Ninth International Symposium on Spread Spectrum Techniques and Applications On the Number of Clusters in Channel Model

Abstract — Typically, scatterers in an environment are not distributed uniformly but rather observed to occur in clusters. Identification of clusters is an issue under discussion. To this end, we study the effect of number of clusters on channel model through computer simulations. We focus on a geometric stochastic directional channel model based on COST259. Fixing a scatterer scenario, we calculate root mean square delay and angular spreads when scatterers are grouped into varying numbers of clusters and study how sensitive these parameters are to the number of clusters used in this channel model. I

Long-Term Simvastatin Attenuates Lung Injury and Oxidative Stress in Murine Acute Lung Injury Models Induced by Oleic Acid and Endotoxin

BACKGROUND: 3-hydroxy-3-methyl-glutaryl coenzyme A (HMG-CoA) reductase inhibitors have several pleiotropic effects, including anti-inflammatory properties, and are reported to improve endothelial functions. Pathophysiologically, acute lung injury (ALI) is caused by a severe inflammatory response and endothelial dysfunction. OBJECTIVE: To investigate the effects of simvastatin (an HMG-CoA reductase inhibitor) on oxidative stress and lung histopathology in 2 murine models of ALI, induced by oleic acid and endotoxin. METHODS: The mice were randomly divided into 2 groups: one received 2 mg/kg/d intraperitoneal simvastatin for 15 days. Then the groups were further divided into 3, which received saline, oleic acid, or endotoxin. Four hours after inducing ALI we obtained lung samples for histopathology analysis, myeloperoxidase, glutathione, and malondialdehyde measurement, and blood samples for malondialdehyde measurement. RESULTS: Endotoxin and oleic acid lung injury increased tissue myeloperoxidase (P = .009 for both), decreased tissue glutathione (P = .02 and P = .009, respectively), and increased tissue malondialdehyde (P = .009 for both), compared to the control group. Simvastatin decreased myeloperoxidase only in the oleic acid group (P = .01). Simvastatin increased glutathione (P = .005 and P = .003, respectively) and lowered malondialdehyde in both the endotoxin and oleic acid groups (P = .003 for both). Histopathology revealed that simvastatin protected the lung tissue in both ALI models, but the protection was greater in the endotoxin group. CONCLUSIONS: Pretreatment with simvastatin decreased the severity of ALI in oleic acid and endotoxin ALI models, by decreasing inflammation and oxidative stress.WoSScopu

An Unexpected Fatal CCHF Case and Management of Exposed Health Care Workers

Crimean-Congo hemorrhagic fever (CCHF) is a tick borne viral disease which can also be transmitted by direct contact with blood or tissue specimens of infected animals or humans. We present a fatal case of CCHF, who was diagnosed after death, and describe the post-exposure management plan for the health care workers (HCWs) involved in her care. In total of 52 HCWs were involved in the patient’s care and they were stratified into risk groups. Overall, 20 HCWs were grouped in high and intermediate risk groups, including the HCW with needle stick injury. High and intermediate risk groups were offered post exposure prophlaxis (PEP) with ribavirin. Fourteen of 20 HCWs started PEP, however 10 ceased after negative CCHF-PCR results. Negative CCHF-PCR results were reported for all HCWs at the 5th day of exposure. Side effects with PEP developed in 5 of HCWs and were mainly gastrointestinal complaints which reversed after drug discontinuation. All HCWs were followed for 14 days both clinically and with laboratory tests. None of the HCWs developed CCHF. PEP with ribavirin can be considered as a safe option in protection

Value of prognostic scores in antineutrophil cytoplasmic antibody (ANCA) associated vasculitis patients in intensive care unit: a multicenter retrospective cohort study from Turkey

Background/aim: There is a need for a scoring system for predicting ICU prognosis of patients with ANCA-associated vasculitis (AAV), but there are limited data on it in the literature. Therefore, we aimed to determine the scores that can estimate the prognosis of patients with AAV during intensive care follow up

Value of prognostic scores in antineutrophil cytoplasmic antibody (ANCA) associated vasculitis patients in intensive care unit: a multicenter retrospective cohort study from Turkey

Background/aim: There is a need for a scoring system for predicting ICU prognosis of patients with ANCA-associated vasculitis (AAV), but there are limited data on it in the literature. Therefore, we aimed to determine the scores that can estimate the prognosis of patients with AAV during intensive care follow up. Materials and methods: All adult patients admitted to the medical ICUs of 4 reference university hospitals in Turkey due to AAV activation and/or disease/treatment complications in the last 10 years were included in this study. Demographic data, treatments before ICU, the Birmingham Vasculitis Activity Score (BVAS) score at the time of vasculitis diagnosis, and BVAS, APACHE II, SOFA, and SAPS II scores at the ICU admission, treatments, procedures, and complications during ICU stay were recorded for all AAV patients. Results: Thirty-four patients were included in the study. The median age of the patients was 60 (42-70) years, and 64.7\% were male. Twenty-five patients were diagnosed with Granulomatosis with polyangiitis, and 9 were diagnosed with Microscopic polyangiitis. The most common ICU admission causes were hemorrhage (85.3\%) and sepsis/septic shock (67.6\%). Twenty patients (58.8\%) died in the ICU follow up. There were significant differences in APACHE II (P = 0.004) and SAPS II (P = 0.044) scores between survivors and nonsurvivors, while there were no significant differences in BVAS (during diagnosis P = 0.089 and ICU admission P = 0.539) and SOFA (P = 0.097) scores. APACHE II score was found to be an independent risk factor for ICU mortality (OR = 1.231, CI 95\% = 1.011-1.498, P = 0.038) according to logistic regression analysis. An APACHE II score of greater than 20.5 predicted ICU mortality with 80\% sensitivity and 70\% specificity (AUC = 0.8, P = 0.004, Likelihood ratio = 2.6) according to the ROC curve analysis. Conclusion: APACHE II score can be used for the prediction of ICU mortality in AAV patients

Outcome of Patients Admitted to Intensive Care Units due to Influenza-Related Severe Acute Respiratory Illness in 2017-2018 Flu Season: A Multicenter Study from Turkey

Background: Influenza can cause severe acute respiratory illness (SARI), which occurs as local outbreaks or seasonal epidemics with high intensive care unit (ICU) admission and mortality rates. Mortality is mainly due to SARI. Objective: The aim of this study was to evaluate the outcome of patients admitted to ICU due to influenza-related SARI in 2017-2018 flu season in Turkey. Methods: A retrospective multicenter study was conducted in 13 ICUs with a total of 216 beds from 6 cities in Turkey. All adult patients (over 18 years) admitted to the ICUs in 2017-2018 flu season (between September 1, 2017, and April 30, 2018) because of SARI and with a positive nasopharyngeal swab for influenza were included in the study. Results: A total of 123 cases were included in the study. The mean age of patients was 64.5 +/- 17.5 years, and 66 (53.7%) patients were older than 65 years. The ICU mortality was 33.9%, and hospital mortality was 35.6%. Invasive mechanical ventilation (IMV), acute kidney injury (AKI), hematologic malignancy, and >65 years of age were the factors affecting mortality in influenza. Conclusion: SARI due to influenza carries a high mortality rate, and IMV, AKI, presence of hematologic malignancy, and older age are independent risk factors for mortality