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In the quest for the faint primordial B-mode polarization of the Cosmic Microwave Background, three are the key requirements for any present or future experiment: an utmost sensitivity, excellent control over instrumental systematic effects and over Galactic foreground contamination. Bolometric Interferometry (BI) is a novel technique that matches them all by combining the sensitivity of bolometric detectors, the control of instrumental systematics from interferometry and a software-based, tunable, in-band spectral resolution due to its ability to perform band-splitting during data analysis (spectral imaging). In this paper, we investigate how the spectral imaging capability of BI can help in detecting residual contamination in case an over-simplified model of foreground emission is assumed in the analysis. To mimic this situation, we focus on the next generation of ground-based CMB experiment, CMB-S4, and compare its anticipated sensitivities, frequency and sky coverage with a hypothetical version of the same experiment based on BI, CMB-S4/BI, assuming that lineof-sight (LOS) frequency decorrelation is present in dust emission but is not accounted for during component separation. We show results from a Monte-Carlo analysis based on a parametric component separation method (FGBuster), highlighting how BI has the potential to diagnose the presence of foreground residuals in estimates of the tensor-to-scalar ratio r in the case of unaccounted Galactic dust LOS frequency decorrelation.

The Q&U Bolometric Interferometer for Cosmology (QL’BIC) is the first bolometric interferometer designed to measure the primordial B -mode polarization of the Cosmic Microwave Background (CMB). Bolometric interferometry is a novel technique that combines the sensitivity of bolometric detectors with the control of systematic effects that is typical of interferometry, both key features in the quest for the faint signal of the primordial B -modes. A unique feature is the so-called “spectral imaging”, i.e., the ability to recover the sky signal in several sub-bands within the physical band during data analysis. This feature provides an in-band spectral resolution of ∆ v / v ~ 0.04 that is unattainable by a traditional imager. This is a key tool for controlling the Galactic foregrounds contamination. In this paper, we describe the principles of bolometric interferometry, the current status of the QU BIC experiment and future prospects.

We report the detection of a weak and extended source in the radio continuum at 1.42 GHz around the position of the high energy gamma ray pulsar PSR 1055-52. The source is also detectable at 408 MHz. It presents non-thermal spectral indices suggesting a synchrotron nature. We discuss the possibility of a physical association with the pulsar.[PUBLICATION ABSTRACT]

Previously there was no available information on the levels of indicator bacteria and the prevalence of pathogens in fresh produce grown in Alberta, Canada. Baseline information on the occurrence and levels of Escherichia coli and the prevalence of foodborne pathogens in selected produce items available to consumers from farmers' and public markets in two large urban centers and surrounding areas in Alberta was obtained. A total of 10 large markets with between 1 and 12 produce vendors and 26 small markets with between 1 and 6 produce vendors were sampled from 21 June to 7 October 2007. Lettuce (128 samples), spinach (59 samples), tomatoes (120 samples), carrots (206 samples), green onions (129 samples), and strawberries (31 samples) were analyzed for E. coli, Salmonella, E. coli O157:H7, and Campylobacter spp. Lettuce, spinach, green onion, and strawberry samples were also tested for the presence of Cryptosporidium spp. Information on whether produce was grown using organic or conventional practices was obtained from the produce vendors. E. coli was isolated from 8.2% of the samples that included lettuce, spinach, carrots, and green onions. The bacterial counts ranged from <0.48 to >3.04 Log most probable number per g. E. coli was not isolated from tomatoes or strawberries. The percentage of positive samples ranged from 4.4% for carrots to 27.1% for spinach. Salmonella, E. coli O157:H7, and Campylobacter spp. were not isolated from any of the samples. Cryptosporidium was identified by PCR in one sample of spinach (0.6% of the samples).

Mycobacterium avium sp. avium (MAA), M. avium sp. hominissuis (MAH), and M. avium sp. paratuberculosis (MAP) are the main members of the M. avium complex (MAC) causing diseases in several hosts. The aim of this study was to describe the genetic diversity of MAC isolated from different hosts. Twenty-six MAH and 61 MAP isolates were recovered from humans and cattle, respectively. GenoType CM® and IS1311-PCR were used to identify Mycobacterium species. The IS901-PCR was used to differentiate between MAH and MAA, while IS900-PCR was used to identify MAP. Genotyping was performed using a mycobacterial interspersed repetitive-unit-variable-number tandem-repeat (MIRU-VNTR) scheme (loci: 292, X3, 25, 47, 3, 7, 10, 32) and patterns (INMV) were assigned according to the MAC-INMV database (http://mac-inmv.tours.inra.fr/). Twenty-two (22/26, 84·6%) MAH isolates were genotyped and 16 were grouped into the following, INMV 92, INMV 121, INMV 97, INMV 103, INMV 50, and INMV 40. The loci X3 and 25 showed the largest diversity (D: 0·5844), and the global discriminatory index (Hunter and Gaston discriminatory index, HGDI) was 0·9300. MAP (100%) isolates were grouped into INMV 1, INMV 2, INMV 11, INMV 8, and INMV 5. The HGDI was 0·6984 and loci 292 and 7 had the largest D (0·6980 and 0·5050). MAH presented a higher D when compared with MAP. The MIRU-VNTR was a useful tool to describe the genetic diversity of both MAH and MAP as well as to identify six new MAH patterns that were conveniently reported to the MAC-INMV database. It was also demonstrated that, in the geographical region studied, human MAC cases were produced by MAH as there was no MAA found among the human clinical samples.

BackgroundInterferon-gamma (IFN-g) is a pro-inflammatory cytokine that modulates the function of several important immune populations. Evidence from human and animal models suggests that increased levels of Type I and/or Type II IFN are associated with SLE.ObjectivesThis study assessed the safety, tolerability, PK and pharmacodynamic (PD) data from AMG 811, an anti-IFNg mAb, in subjects with active class III or IV LN.MethodsSubjects were enrolled if they had new onset or reactivation of biopsy-proven (within 18 months) class III or IV LN, UP/Cr >1 or 24 hr urine protein >1 g after at least 12 wks of treatment with MMF or AZA. Superimposed membranous changes were allowed. Subjects with rapidly progressive GN or significant chronicity were excluded. Subjects could receive oral prednisone at doses up to 20 mg/day. Subjects were randomized to placebo or ascending doses of AMG 811 (20, 60 or 120 mg given SC q4 wks for three doses at 3:1 allocation) in addition to MMF or AZA. The primary endpoints were safety, tolerability, and anti-drug antibodies. Serum AMG 811 concentrations, anti-AMG 811 antibodies and PD biomarkers (blood RNA and serum) were also assessed. Disease related assessments included reduction from baseline in proteinuria (24 hr urine and spot UP/Cr), SLEDAI scores and changes in SLE-related biomarkers.Results28 subjects were enrolled: 7 in the PBO group and 21 in the AMG 811 treatment groups. The proportion of subjects reporting treatment emergent AEs, including serious AEs, was similar between PBO and AMG 811 groups although a numerically higher proportion of subjects treated with AMG 811 had infectious events. AMG 811 displayed linear PK with half-life of 11-21 days. Exposures after doses of 20 & 60 mg in LN subjects were similar to exposures in non-renal SLE subjects. Antibodies to AMG 811 were not observed at any time. Baseline serum CXCL10 (IP-10) levels and IFNgamma-modulated mRNAs were higher in LN compared to non-renal SLE; both populations had elevated levels compared to healthy controls. AMG 811 (60 & 120 mg cohorts) led to a reduction in these biomarkers, albeit incomplete and transient, suggesting that AMG 811 may have had reduced target coverage in LN relative to non-renal SLE, where levels were reduced into the healthy range. Although numerous subjects demonstrated improvement in proteinuria, no consistent differences between AMG 811 treatment cohorts and PBO were discernable at week 12 in renal outcome or SLE-related serum biomarkers.ConclusionsAMG 811 demonstrated a favorable PK and immunogenicity profile in active LN subjects, and the overall safety profile was acceptable in this small study. Inhibition of pharmacodynamic biomarkers with doses up to 120 mg of AMG 811 appeared incomplete in LN subjects. There were no discernible effects of AMG 811 on clinical or SLE-related serologic outcome measures over the treatment period although interpretation is challenging given the small sample size.Disclosure of InterestD. Martin Employee of: Amgen, Z. Amoura: None declared, J. Romero-Diaz: None declared, Y. Chong: None declared, J. Sanchez-Guerrero: None declared, T. Chan: None declared, G. Arnold Employee of: Amgen, M. Damore Employee of: Amgen, W. Sohn Employee of: Amgen, N. Chirmule Employee of: Amgen, K. Chiu Employee of: Amgen, C. Wang Employee of: Amgen, M. Boedigheimer Employee of: Amgen, B. Sullivan Employee of: Amgen, A. Welcher Employee of: Amgen, B. Kotzin Employee of: Amgen, J. Chung Employee of: Amgen

Background Sarcopenia refers to age-related loss of muscle mass and function. However, autoimmune sarcopenia refers to excessive weight loss usually with disproportionate muscle wasting due to cytokine excess. Previous studies have found a frequency of autoimmune sarcopenia of about 15 to 20%. The progressive loss of muscle mass lead to decrease in physical activity and a rise in cardiovascular and metabolic disorders. There is currently no widely accepted definition of sarcopenia in autoimmune diseases. Objectives The purpose of this study was to determine the frequency of muscle wasting in patients with rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE). Methods In a cross-sectional study, we screened the patients from outpatient clinic in the rheumatology service and were excluded patients with chronic disorders of heart, kidney and liver, also the patients that were on HMG-CoA reductase inhibitors treatment; we performed medical history and physical examination, specialist in clinical nutrition made the anthropometric measures, blood samples were taken for clinical laboratory analysis. Activity scales for each disease were made, DAS-28 in RA and MEX-SLEDAI in SLE patients. We determined the whole body lean mass using Dual-emission X-ray Absorptiometry (DEXA). Statistical analysis was performed using arithmetic mean, standard deviation, Student T test; chi-square and Fisher exact test when appropriate and Spearman rank correlation test all using SPSS program (v 12.0). Results Forty-six patients with autoimmune disease (AID), twenty six patients with RA and 20 with SLE according to the 1987 ACR criteria and 25 healthy subjects were analyzed; mean age of AID was 40±13.4 vs. 39±18 years in control group. Ninety-four percent were women. 90% of the AID group was taking hydroxychloroquine and 80% was on mild doses of corticosteroids. The anthropometric measures revealed obesity in 28% of the patients vs 16% in control group. The frequency of sarcopenia in AID group was 26% (12 pts) vs 20% (5 pts) in control group, p=0.000; There was no difference in the cases of sarcopenic-obesity. The risk of sarcopenia in sedentary patients was OR 1.93 (IC 95% 0.385 to 9.7). There was no correlation between activity scales of AID and sarcopenia rho =0.121 for SLE and rho=0.170 in RA patients. The use of hydroxychloroquine is not protection for muscle wasting OR 1.4 (IC 95% 0.147 to 14.59). Finally the risk of sarcopenia in patients with AID was OR 1.4 (IC 95% 0.434 to 4.596). Conclusions Our work demonstrated that patients with AID have a slightly risk of sarcopenia when are compared to control group. This finding may affect the quality of life and promote the increasing of morbidity in such patients. References Santos MJ, Vinagre F, Canas Da silva J, Gil V, Fonseca JE. Body composition phenotypes in systemic lupus erythematosus and rheumatoid arthritis: a comparative of caucasian female patients. Clin Exp Rheum; 2011 29: 470-476 Disclosure of Interest None Declared

We here identified for the first time the presence of Mycobacterium avium paratuberculosis (MAP) sheep (S) strain in Argentina. IS900 polymerase chain reaction (PCR) was positive. The S strain was compared with MAP cattle (C) strains by using IS1311 PCR-restriction endonuclease analysis (PCR-REA), multiplex PCR and restriction fragment length polymorphism (RFLP) analysis.

Timed artificial insemination (TAI) programs in water buffalo have adopted hormonal protocols used in cattle. However, physiological differences (e.g. progesterone levels) may affect the efficacy of the synchronization programs in this species. The objective of this study was to compare the pregnancy rate after ovulation synchronization and TAI in water buffalo (Bubalus bubalis) using two different intravaginal progesterone (P4) devices containing different (P4) concentration. The study was performed at a commercial buffalo farm at Colón county of Zulia state, Venezuela, during June and August 2015. One hundred six mature female buffalo were utilized in this study. Animals were randomly assigned to one of two groups that received an intravaginal device for 9 days: 1) CIDR (n= 55) (CIDR[R], Pfizer) containing 1.38 gr of P4 or 2) DIB (n= 51) (DIB [R], Syntex) containing 1.0 gr of P4. Additionally, on day 0, animals were administered a dose of 50 [micro]g of GnRH (Conceptal[R], Intervet) im. On day 9, the intravaginal devices were removed and animals received 25 mg de PGF2[alpha] im (Lutalyse[R], Pfizer) and 500 UI of eCG (Folligon[R], Intervet) im. On day 11, animals received 50 [micro]g of GnRH (Conceptal[R]) im and were artificially inseminated 8-12 hours later, using semen from a single Murrah bull. Animals had a body condition score of 3 and 3.5 (scale 1 to 5). Data were analysed using proc logistic of the Statistical Analysis System (SAS). Animals in the DIB group had a significantly higher pregnancy rate (62.7%; 32/51; P = 0.0193) compare to animals in the CIDR group (40%; 22/55). In conclusion, pregnancy rate was higher in buffaloes treated with the synchronization protocol using DIB compared to that obtained with CIDR, which might be attributed to differences in P4 concentration, chemical composition or absorption rate.