Effects of Low Dose Gamma Radiation on Plasma Proteins in Chickens Hatched from Eggs Irradiated before Incubation

Introduction: Biological effects after a single prenatal exposure to ionizing radiation, reflecting significant heterogeneities in the responses in different species with respect to radiation type, dose, dose rate and time of exposure. Moreover, current knowledge and obtained results for poultry exposed to low dose ionizing radiation are inconsistent and almost lacking at present. The aim of this study was to determine the effect of low dose gamma radiation on protein profile in blood of chickens irradiated in ovo.  Material and Methods: Fertilized chicken eggs in the experimental group were exposed to 0.3 Gy gamma radiation one hour before incubation, and control group was sham irradiated. Blood samples were taken on 1st, 3rd, 5th, 7th and 10th days of life. The plasma proteins fractions were separated by electrophoresis, while total protein and albumin levels were determined using the spectrophotometric method. Results: The obtained differences between control and experimental groups for total protein and albumin concentrations were statistically nonsignificant during our research. Total globulins were increased 10th day of chick’s life due to an increase in alpha globulins (P < 0.05). In contrast, gamma globulins were decreased in one-day-old chickens exposed to ionizing radiation (P < 0.05). Conclusion: Our study indicates a significant effect of low-dose ionizing radiation on protein synthesis after in ovo exposure, although more research is needed to determine underlying molecular mechanisms triggered by low-dose gamma radiation

Electromagnetic wave propagation in rain and polarization effects

This paper summarizes our study on microwave and millimeter-wave propagation in rain with special emphasis on the effects of polarization. Starting from a recount of our past findings, we will discuss developments with these and how they are connected with subsequent research

The consequences of niche and physiological differentiation of archaeal and bacterial ammonia oxidisers for nitrous oxide emissions

The authors are members of the Nitrous Oxide Research Alliance (NORA), a Marie Skłodowska-Curie ITN and research project under the EU's seventh framework program (FP7). GN is funded by the AXA Research Fund and CGR by a Royal Society University Research Fellowship (UF150571) and a Natural Environment Research Council (NERC) Standard Grant (NE/K016342/1). The authors would like to thank Dr Robin Walker and the SRUC Craibstone Estate (Aberdeen) for access to the agricultural plots, Dr Alex Douglas for statistical advice and Philipp Schleusner for assisting microcosm construction and sampling.Peer reviewedPublisher PD

Detection of peripheral arterial disease with an improved automated device: comparison of a new oscillometric device and the standard Doppler method

Matjaž &Scaron;pan,1 Gregor Ger&scaron;ak,2 Sandrine C Millasseau,3 Marko Meža,4 Andrej Ko&scaron;ir4 1Cardiovascular Department, Izola General Hospital, Izola, 2Laboratory of Metrology and Quality, Faculty of Electrical Engineering, University of Ljubljana, Ljubljana, Slovenia; 3Pulse Wave Consulting, Saint Leu La Foret, France; 4Faculty of Electrical Engineering, User-adapted Communication and Ambient Intelligence Lab, University of Ljubljana, Ljubljana, Slovenia Abstract: In occidental countries, peripheral arterial disease (PAD) is an important health issue; however, most subjects are asymptomatic (~50%) and therefore undiagnosed and untreated. Current guidelines recommend screening for PAD in primary care setting using ankle brachial index (ABI) in all patients with cardiovascular risks. This is, however, not performed strictly because the standard Doppler method is cumbersome and time-consuming. Here, we evaluate the accuracy and reproducibility of ABI measurements obtained by an improved automated oscillometric device, the MESI ABPI MD&reg; device, and the standard Doppler method. ABI was measured in random order in a general practice with Doppler probes by two operators separately (ABI_dop) and twice with the MESI ABPI MD device (ABI_mesi). ABI_dop was calculated dividing the highest systolic blood pressure from both tibial and dorsalis pedis arteries by the highest systolic blood pressure of both brachial arteries. ABI_mesi was obtained automatically with simultaneous measurements on three extremities. According to ABI_dop, PAD was present in 10% of the 136 screened subjects (68.2&plusmn;7.4 years). Interoperator coefficient of variation was 5.5% for ABI_dop, while the intrasubject coefficient of variation for ABI_mesi was 3.0%. ABI_mesi was correlated with ABI_dop (R=0.61, P&lt;0.0001). The difference between the two techniques was 0.06&plusmn;0.14 with ABI_mesi providing slightly higher values (P&lt;0.0001) and negligible bias across the range (R=0.19, P&lt;0.0001). Therefore, ABI_mesi &le;1 had a sensitivity of 85% and specificity of 96% to detect ABI_dop &le;0.9 and hence PAD. Doppler measurements took seven times longer than MESI ABPI MD measurements to be performed. In conclusion, MESI improved automated oscillometric method and offered a faster and repeatable measurement of ABI with only a small, clinically irrelevant overestimation of ABI value. The tested MESI ABPI MD-improved oscillometric system can be used as a screening tool for patients in general practice and would enable family doctors to comply with current guidelines for PAD. Keywords: ankle brachial index, peripheral arterial disease, automated oscillometric method, Doppler method, screening too