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Current antimicrobial treatment recommendations for melioidosis, the disease caused by Burkholderia pseudomallei, are largely based on studies of strains isolated from the Eastern Hemisphere (EH), where most human cases are identified and reported. In this study, we evaluated the antimicrobial susceptibility of 26 strains in the CDC (Centers for Diseases Control and Prevention) collection from the Western Hemisphere (WH) isolated from 1960 to 2015. Minimal inhibitory concentration (MIC) values were measured by standard broth microdilution for 16 antimicrobials following Clinical and Laboratory Standards Institute (CLSI) guidelines. Twenty-four of the 26 WH strains were susceptible to the six antimicrobials with CLSI-defined MIC susceptibility interpretive criteria for B. pseudomallei amoxicillin/clavulanate, ceftazidime, imipenem, doxycycline, tetracycline, and trimethoprim/sulfamethoxazole. One WH strain demonstrated intermediate amoxicillin/clavulanate resistance and another strain had intermediate resistance to tetracycline. For all antimicrobials tested, the susceptibility profiles of WH isolates were comparable with previously reported MIC results of EH strains. The overall similarities suggest that the same antimicrobials are useful for melioidosis treatment in both the WH and EH. Using in silico analyses of WH genomes, we identified a novel amino acid substitution P258S in the beta-lactamase PenA, which may contribute to decreased susceptibility to amoxicillin/clavulanate in B. pseudomallei.Parkinson's disease (PD) is a chronic neurodegenerative disorder mainly attributed to the progressive loss of dopaminergic neurons in the substantia nigra, which leads to uncontrolled voluntary movements causing tremors, postural instability, joint stiffness, and speech and locomotion difficulties, among other symptoms. Previous studies have shown the participation of specific peptides in neurodegenerative diseases. In this context, the present work analyzed changes in the peptide profile in zebrafish brain induced to parkinsonian conditions with 6-hydroxydopamine, using isotopic labeling techniques plus mass spectrometry. These analyses allowed the relative quantitation and identification of 118 peptides. Of these, nine peptides showed significant changes, one peptide was increased and eight decreased. https://www.selleckchem.com/products/remodelin.html The most altered sequences were fragment of cytosolic and extracellular proteins related to lipid metabolism and dynamic cytoskeleton. These results open new perspectives of study about the function of peptides in PD.Livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) have emerged worldwide as zoonotic pathogens. Data on LA-MRSA in veal calf production in Italy are lacking; the aim of this survey was to fill current knowledge gaps in its prevalence and characteristics. Between February 2012 and January 2013 nasal swabs were taken from 1650 three- to six-month-old veal calves on 55 farms in Piedmont (northwest Italy), including gathering-related epidemiological data. S. aureus were screened for methicillin resistance by phenotypic and molecular (mecA gene detection) methods. MRSA were further genotyped by multilocus sequence typing. About 30% of the herds tested positive for MRSA three different clonal complexes (CC398, CC97, and CC1) and staphylococcal cassette chromosome mec types (IVa, IVb, and V) were detected. Multilevel logistic regression model indicated poor cleaning, importation from Austria, and animal age as risk factors and coagulase-negative staphylococci colonization as a predictive factor for the occurrence of MRSA. The detection of CCs circulating in pigs and dairy cattle in Italy underscores the ability of the LA-MRSA clones to spread among animal production systems. In addition to maintaining preventive control measures for human health, better cleaning procedures need to be implemented, especially after new calves have been introduced into the herd.As a potential "Superbug," Pseudomonas aeruginosa remains the leading concern in antimicrobial resistance. In this study, the emergence of clinical P. aeruginosa isolate was found to carry crpP and blaGES-5 on the chromosome and blaKPC-2 on a plasmid. A clinical P. aeruginosa strain Guangzhou-PaeC79 with an extensively drug-resistant phenotype was isolated, which was resistant to all classes of clinical commonly used antibiotics. It contains one chromosomal DNA and one plasmid, with seven acquired antimicrobial resistance genes identified on the chromosome, including carbapenem resistance gene blaGES-5 and fluoroquinolone resistance gene crpP, and carbapenem resistance gene blaKPC-2 located on an IncP-6-type plasmid pPAEC79 carrying a Tn3-like element. Carriage of any two of the resistance genes has never been previously reported, and simultaneous carriage of three bla and crpP may explain the bacterial phenotype as high-level resistance to imipenem and meropenem (≥16 μg/mL) and resistance to ciprofloxacin and levofloxacin.Background Few studies have explored the impact of ischemic and non-ischemic etiologies of heart failure and other factors associated with heart failure on zinc and copper status. This study examined zinc and copper status in 80 outpatients with ischemic (n = 36) and non-ischemic (n = 44) heart failure and associations with biodemographic, clinical, biochemical, and nutritional parameters.Materials Biomarkers of plasma zinc and copper, copper-zinc ratio, 24-h urinary zinc excretion, ceruloplasmin, and dietary intake of zinc and copper were assessed. Plasma zinc and copper and urinary zinc were measured by inductively coupled plasma mass spectrometry (ICP-MS).Results Patients with ischemic heart failure showed lower dietary zinc intake and higher dietary copper intake (both p = 0.02). Zinc and copper in plasma, copper-zinc ratio, ceruloplasmin, and 24-h urinary zinc excretion showed no statistical differences between the groups (all p ≥ 0.05). An inverse association was found between age (β =-0.001; p = 0.005) and the use of diuretics (β = -0.047; p = 0.013) and plasma zinc. Copper levels in plasma (β = 0.001; p less then 0.001), and albumin (β = 0.090; p less then 0.001) were directly associated with plasma zinc. A positive association was found between ceruloplasmin (β = 0.011; p less then 0.001), gamma-glutamyl transferase (β = 0.001; p less then 0.001), albumin (β = 0.077; p = 0.001), and high-sensitivity c-reactive protein (β = 0.001; p = 0.024) and plasma copper.Conclusion Zinc and copper biomarkers in clinically stable patients with heart failure did not seem to be responsive to the differences in zinc and copper intake observed in this study, regardless of heart failure etiology. The predictors of plasma zinc and copper levels related to oxidative stress and inflammation should be monitored in heart failure clinical practice.
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