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BACKGROUND: Faecal immunochemical test (FIT) has been recommended to assess symptomatic patients for colorectal cancer (CRC) detection. Nevertheless, some conditions could theoretically favour blood originating in proximal areas of the gastrointestinal tract passing through the colon unmetabolized. A positive FIT result could be related to other gastrointestinal cancers (GIC). AIM: To assess the risk of GIC detection and related death in FIT-positive symptomatic patients (threshold 10 µg Hb/g faeces) without CRC. METHODS: Post hoc cohort analysis performed within two prospective diagnostic test studies evaluating the diagnostic accuracy of different FIT analytical systems for CRC and significant colonic lesion detection. Ambulatory patients with gastrointestinal symptoms referred consecutively for colonoscopy from primary and secondary healthcare, underwent a quantitative FIT before undergoing a complete colonoscopy. Patients without CRC were divided into two groups (positive and negative FIT) using the threshold of 10 µg Hb/g of faeces and data from follow-up were retrieved from electronic medical records of the public hospitals involved in the research. We determined the cumulative risk of GIC, CRC and upper GIC. Hazard rate (HR) was calculated adjusted by age, sex and presence of significant colonic lesion. RESULTS: We included 2709 patients without CRC and a complete baseline colonoscopy, 730 (26.9%) with FIT = 10 µgr Hb/gr. During a mean time of 45.5 ± 20.0 mo, a GIC was detected in 57 (2.1%) patients: An upper GIC in 35 (1.3%) and a CRC in 14 (0.5%). Thirty-six patients (1.3%) died due to GIC: 22 (0.8%) due to an upper GIC and 9 (0.3%) due to CRC. FIT-positive subjects showed a higher CRC risk (HR 3.8, 95%CI: 1.2-11.9) with no differences in GIC (HR 1.5, 95%CI: 0.8-2.7) or upper GIC risk (HR 1.0, 95%CI: 0.5-2.2). Patients with a positive FIT had only an increased risk of CRC-related death (HR 10.8, 95%CI: 2.1-57.1) and GIC-related death (HR 2.2, 95%CI: 1.1-4.3), with no differences in upper GIC-related death (HR 1.4, 95%CI: 0.6-3.3). An upper GIC was detected in 22 (0.8%) patients during the first year. Two variables were independently associated: anaemia (OR 5.6, 95%CI: 2.2-13.9) and age = 70 years (OR 2.7, 95%CI: 1.1-7.0). CONCLUSION: Symptomatic patients without CRC have a moderate risk increase in upper GIC, regardless of the FIT result. Patients with a positive FIT have an increased risk of post-colonoscopy CRC.

Background: Continuous growth of mobile populations has influenced the global epidemiology of infectious diseases, including chronic and acute viral hepatitis. Method: A prospective observational multicentre study was performed in a Spanish network of imported infections. Viral hepatitis cases from January 2009 to September 2017 were included. Results: Of 14,546 records, 723 (4.97%) had imported viral hepatitis, including 48 (6.64%) acute cases and 675 (93.36%) chronic cases. Of the 48 acute cases, 31 were travellers and immigrants returning from visiting friends or relatives (VFR), while 19 (61%) were acute Hepatitis A or Hepatitis B. Only 18.2% of VFR immigrants and 35% of travellers received pre-travel advice. Acute hepatitis was more frequent in VFR immigrants (AOR 2.59, CI95% 1.20-5.60) and travellers (AOR 2.83, CI95% 1.46-5.50) than immigrants. Of the 675 Chronic cases, 570 were immigrants, and 439 (77%) had chronic Hepatitis B. Chronic hepatitis was more frequent in immigrants (AOR 20.22, CI95% 11.64-35.13) and VFR immigrants (AOR 11.12, CI95% 6.20-19.94) than travellers. Conclusions: Chronic viral hepatitis was typical of immigrants, acute viral hepatitis was common among travellers, and VFR immigrants had mixed risk. Improving pre-travel consultation and screening of immigrants may contribute to preventing new cases of viral hepatitis and avoiding community transmission.

Introduction Carbapenems are considered the treatment of choice for extended-spectrum β-lactamase (ESBL) or Amp-C β-lactamase-producing Enterobacteriaceae bacteremia. Data on the effectiveness of non-intravenous carbapenem-sparing antibiotic options are limited. Objective To compare the 30 day-mortality and clinical failures associated with the use of carbapenems vs an alternative non-intravenous antibiotic for the definitive treatment of ESBL/Amp-C positive Enterobacteriaceae bacteremia. Methods This is a 12-year retrospective study (2004 – 2015) including all patients with bacteremia due to ESBL/Amp-C-producing Enterobacteriaceae. Given the lack of randomization of the initial therapies, a propensity score for receiving carbapenems was calculated. Results There were 1115 patients with a first episode of bacteremia due to E. coli or K. pneumoniae, of which 123 were ESBL/Amp C-positive (11%). There were 101 eligible patients: 59 in the carbapenem group and 42 in the alternative treatment group (cotrimoxazole 59.5%, quinolones 21.4%). The most frequent sources of infection were urinary (63%) and biliary (15%). Compared to the carbapenem group, patients treated with the alternative regimen had a shorter hospital stay (median [IQR]: 7 days [5-10] vs 12 days [9-18], p Conclusion Alternative non-IV carbapenem-sparing antibiotics could have a role in the definitive treatment of ESBL/Amp-C-positive Enterobacteriaceae bloodstream infections, allowing a reduction in carbapenem use. The use of cotrimoxazole in this setting has shown favourable results. ESBL: Extended-spectrum β-lactamase Amp-C: Amp-C β-lactamase BL/BLIs: β-lactam/β-lactamase inhibitor combinations IV: Intravenous TMP-SMX: Trimethoprim-Sulfamethoxazole Some of the data contained in this article were presented at the 55th Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC) and at the 28th International Congress of Chemotherapy Meeting (ICC), San Diego, USA, 2015.

author can archive pre-print (ie pre-refereeing). 12 meses de embargo Conference paper DOI: 10.1515/pac-2014-0934 URL: https://www.degruyter.com/view/j/pac.2015.87.issue-2/pac-2014-0934/pac-2014-0934.xml Filiació URV: SI Diboron reagents can be activated both, from a metal or free-metal context, and consequently the addition of boryl units to unsaturated substrates proceeds sometimes with complementary selectivity. We highlight here the power of boron chemistry to functionalize molecules and provide new routes towards challenging compounds

author can archive pre-print (ie pre-refereeing) 12 meses de embargo DOI: 10.1039/c4ob02478h URL: http://pubs.rsc.org/en/Content/ArticleLanding/2015/OB/C4OB02478H#!divAbstract Filiació URV: SI The adduct [MeO ¿ Bpin-Bpin]- efficiently mediates the ¿-boration of ¿,¿-unsaturated imines formed in situ. The use of chiral phosphines as additives, and in particular the chiral phosphine (S)-MeBoPhoz, enables the catalytic asymmetric reaction to proceed with higher enantioselectivity than the analogue copper(i) mediated reaction.

author can archive pre-print (ie pre-refereeing). 12 meses de embargo DOI: 10.1039/c4cc02098g URL: http://pubs.rsc.org/en/Content/ArticleLanding/2014/CC/c4cc02098g#!divAbstract Filiació URV: SI Activated olefins directly react with phenylselenium boranes, at room temperature, without the need of metal or organocatalytic assistance. A simple mechanism that involves the interaction of the electron pair of carbonyl functional group in ¿,¿-unsaturated ketones and aldehydes, with the empty p orbital of the boron atom, justifies the efficient reaction towards the kinetically and thermodynamically most stable 1,4-addition product. Up to 12 examples of ¿ (phenylseleno) substituted ketones and aldehydes have been prepared with moderate to high yield. The simplicity and efficiency of this new reactivity generates new strategic platforms towards the C-Se bond formation and opens non existing pathways to create C-heteroatom bonds, as a general tool

author can archive pre-print (ie pre-refereeing) DOI: 10.1002/adsc.201500650 URL: http://onlinelibrary.wiley.com/doi/10.1002/adsc.201500650/abstract;jsessionid=BDAFCF7CB20C8EAEB9EE626EFD8A7F6C.f04t01 Filiació URV: SI The ¿pull push¿ effect of the Bpin moiety in ArE-Bpin reagents (E=Se, S) is demonstrated by the Lewis acid interaction with the carbonyl group of ynones and the concomitant delivery of ArSe or ArS to the electron deficient alkyne with impressive stereoselectivity. The two component reactivity is carried out in MeOH to generate (Z)-¿-(arylseleno)-¿,¿-unsaturated ketones and (Z)-¿-(arylsulfuro)-¿,¿-unsaturated ketones with a consensus between experimental and theoretical understanding of the mechanism

10.1039/c4cc02098g Activated olefins directly react with a phenylselenium borane, at room temperature, without any metal or organocatalytic assistance. Up to 10 examples of ß-(phenylseleno) substituted ketones and aldehydes have been prepared and theoretical evidence for the mechanism opens up non-existing pathways to create C-heteroatom bonds as a general tool.