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https://www.readbyqxmd.com/read/29226986/vaccination-of-atlantic-lumpfish-cyclopterus-lumpus-l-at-a-low-temperature-leads-to-a-low-antibody-response-against-aeromonas-salmonicida
#1
T Erkinharju, R A Dalmo, Ø Vågsnes, I Hordvik, T Seternes
We present a study on the effect of water temperature on immunization of Atlantic lumpfish. In total, 360 fish were vaccinated with either 50 μl of an oil-based injection vaccine (VAX), with Aeromonas salmonicida and Vibrio salmonicida antigens, or PBS. Fish were vaccinated at three different water temperatures, 5°C, 10°C and 15°C, and sorted into six groups (N = 60). Lumpfish were weighed every 3 weeks after vaccination, sampled at 3, 6, 9 and 18 weeks post-immunization (wpi) and evaluated by modified Speilberg score, ELISA and immunoblotting...
December 11, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/29222028/sodium-butyrate-enhanced-physical-barrier-function-referring-to-nrf2-jnk-and-mlck-signaling-pathways-in-the-intestine-of-young-grass-carp-ctenopharyngodon-idella
#2
Pei Wu, Li Tian, Xiao-Qiu Zhou, Wei-Dan Jiang, Yang Liu, Jun Jiang, Fei Xie, Sheng-Yao Kuang, Ling Tang, Wu-Neng Tang, Juan Yang, Yong-An Zhang, He-Qun Shi, Lin Feng
This study evaluated the effect of dietary sodium butyrate (SB) supplementation on the intestinal physical barrier function of young grass carp (Ctenopharyngodon idella). The fish were fed one powdery sodium butyrate (PSB) diet (1000.0 mg kg-1 diet) and five graded levels of microencapsulated sodium butyrate (MSB) diets: 0.0 (control), 500.0, 1000.0, 1500.0 and 2000.0 mg kg-1 diet for 60 days. Subsequently, a challenge test was conducted by injection of Aeromonas hydrophila to explore the effect of SB supplementation on intestinal physical barrier function and the potential mechanisms in fish...
December 5, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29211811/challenges-in-the-diagnosis-of-ulcerative-colitis-with-concomitant-bacterial-infections-and-chronic-infectious-colitis
#3
Wei-Chen Lin, Chen-Wang Chang, Ming-Jen Chen, Cheng-Hsin Chu, Shou-Chuan Shih, Tzu-Chi Hsu, Horng-Yang Wang
Ulcerative colitis (UC) is a chronic inflammation of the large bowel characterized by diarrhea and a negative stool culture. However, several enteropathogens have been implicated as causative agents in UC. The differentiation between chronic infectious colitis (IC) and UC with concurrent infection is difficult owing to their similar clinical presentations. The study aimed to explore the presentations and diagnostic clues that enable differentiation between UC with concomitant infections and chronic IC. The study included 17 UC patients with a bacterial infection and 46 with chronic IC...
2017: PloS One
https://www.readbyqxmd.com/read/29208500/effect-of-microencapsulated-probiotic-bacillus-vireti-01-polysaccharide-extract-of-gracilaria-folifera-with-alginate-chitosan-on-immunity-antioxidant-activity-and-disease-resistance-of-macrobrachium-rosenbergii-against-aeromonas-hydrophila-infection
#4
S Vidhya Hindu, S Thanigaivel, S Vijayakumar, Natarajan Chandrasekaran, Amitava Mukherjee, John Thomas
Polysaccharide from red seaweed Gracilaria folifera has an interesting functional property of antioxidant activity and prebiotic effect. A feeding trial experiment was directed to examine the effect of probiotic bacteria Bacillus vireti 01 microencapsulated with G. folifera polysaccharide against freshwater prawn M. rosenbergii. Three different feeding trials were conducted for 15 days. The first group contained prawns fed with commercial diet. The second group was comprised of Aeromonas hydrophila challenged prawns fed with commercial feed...
December 2, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29205196/speciation-clinical-profile-antibiotic-resistance-in-aeromonas-species-isolated-from-cholera-like-illnesses-in-a-tertiary-care-hospital-in-north-india
#5
Balvinder Mohan, Nandini Sethuraman, Ritu Verma, Neelam Taneja
BACKGROUND & OBJECTIVES: Aeromonas species have been reported to cause various illnesses in humans such as wound infections, septicaemia, peritonitis and pneumonia. Their role in causation of cholera-like illness is also being increasingly recognized. This retrospective study was done to know the presence of Aeromonas as a cause of acute diarrhoea in a tertiary care hospital and to find the common species of Aeromonas causing diarrhoea and their antibiotic susceptibility patterns. METHODS: Fifty isolates of Aeromonas were obtained over a period of 15 yr from 2000 to 2014 from patients of suspected acute gastroenteritis resembling cholera...
July 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/29204282/in%C3%A2-vivo-selection-of-a-multidrug-resistant-aeromonas-salmonicida-during-medicinal-leech-therapy
#6
E Ruppé, A Cherkaoui, N Wagner, G C La Scala, J-Y Beaulieu, M Girard, J Frey, V Lazarevic, J Schrenzel
We report the selection in a 15-year-old boy of a multidrug-resistant, extended-spectrum β-lactamase (ESBL)-producing Aeromonas salmonicida after medicinal leech therapy that required an antibiotic prophylaxis based on piperacillin/tazobactam and cotrimoxazole. Whole genome sequencing of the strain indeed revealed 13 antibiotic resistance genes, including the ESBL CTX-M-3 and the unusual β-lactamase SCO-1.
January 2018: New Microbes and New Infections
https://www.readbyqxmd.com/read/29204087/the-effect-of-aeromonas-hydrophila-infection-on-the-non-specific-immunity-of-blunt-snout-bream-megalobrama-amblycephala
#7
Hu Xia, Ying Tang, Fenghui Lu, Yushuang Luo, Pinhong Yang, Wenbin Wang, Jigang Jiang, Na Li, Qing Han, Fei Liu, Lianggvo Liu
Aeromonas hydrophila is the main reason of epidemic septicaemia for freshwater fish. In the present study, the effect of Aeromonas hydrophila infection on the non-specific immunity of blunt snout bream (Megalobrama amblycephala) was studied. After Aeromonas hydrophila challenge, lysozyme activity was significantly increased at 4 h, 1 d, 3 d, 5 d, 14 d and 21 d. An increased level of lysozyme activity indicated a natural protective mechanism in fish. The significant increases of superoxide dismutase activity and catalase activity in treatment group were detected at 4 h, 1 d, 3 d, 5 d, 14 d and 21 d after Aeromonas hydrophila challenge...
2017: Central-European Journal of Immunology
https://www.readbyqxmd.com/read/29204058/diversity-of-bacterial-lactase-genes-in-intestinal-contents-of-mice-with-antibiotics-induced-diarrhea
#8
Cheng-Xing Long, Lu He, Yan-Fang Guo, Ya-Wei Liu, Nen-Qun Xiao, Zhou-Jin Tan
AIM: To investigate the diversity of bacterial lactase genes in the intestinal contents of mice with antibiotics-induced diarrhea. METHODS: Following 2 d of adaptive feeding, 12 specific pathogen-free Kunming mice were randomly divided into the control group and model group. The mouse model of antibiotics-induced diarrhea was established by gastric perfusion with mixed antibiotics (23.33 mL·kg-1·d-1) composed of gentamicin sulfate and cephradine capsules administered for 5 days, and the control group was treated with an equal amount of sterile water...
November 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29203482/presence-of-mcr-3-variant-in-aeromonas-caviae-proteus-mirabilis-and-escherichia-coli-from-one-domestic-duck
#9
Xiaoming Wang, Weishuai Zhai, Jiyun Li, Dejun Liu, Qidi Zhang, Zhangqi Shen, Shaolin Wang, Yang Wang
The rapid rise and dissemination of MDR bacteria is a major threat to public health worldwide, and has narrowed the treatment options for infections caused by these bacteria (1).….
December 4, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29201017/characterization-of-metagenomes-in-urban-aquatic-compartments-reveals-high-prevalence-of-clinically-relevant-antibiotic-resistance-genes-in-wastewaters
#10
Charmaine Ng, Martin Tay, Boonfei Tan, Thai-Hoang Le, Laurence Haller, Hongjie Chen, Tse H Koh, Timothy M S Barkham, Karina Y-H Gin
The dissemination of antimicrobial resistance (AMR) is an escalating problem and a threat to public health. Comparative metagenomics was used to investigate the occurrence of antibiotic resistant genes (ARGs) in wastewater and urban surface water environments in Singapore. Hospital and municipal wastewater (n = 6) were found to have higher diversity and average abundance of ARGs (303 ARG subtypes, 197,816 x/Gb) compared to treated wastewater effluent (n = 2, 58 ARG subtypes, 2,692 x/Gb) and surface water (n = 5, 35 subtypes, 7,985 x/Gb)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29198777/the-cyclin-dependent-kinase-2-cdk2-mediates-hematopoiesis-through-g1-to-s-transition-in-chinese-mitten-crab-eriocheir-sinensis
#11
Bin Yang, Yunke Jia, Zhihao Jia, Weilin Wang, Xiaorui Song, Yannan Li, Qilin Yi, Lingling Wang, Linsheng Song
Cyclin-dependent kinases (CDKs), a family of cell cycle-related serine/threonine kinases, participate in various biological processes, and play crucial roles in the innate immunity. In the present study, a CDK2 (designed as EsCDK2) with a serine/threonine protein kinase catalytic domain was identified from Chinese mitten crab (Eriocheir sinensis). The full-length cDNA sequence of EsCDK2 was of 2405 bp with an open reading frame (ORF) of 909 bp. EsCDK2 shared 66%-81% sequence similarities with previously identified CDK2s...
November 30, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29197618/chlorella-sp-transgenic-with-scy-hepc-enhancing-the-survival-of-sparus-macrocephalus-and-hybrid-grouper-challenged-with-aeromonas-hydrophila
#12
Yibin He, Hui Peng, Jie Liu, Fangyi Chen, Ying Zhou, Xiaowan Ma, Huiyun Chen, Kejian Wang
Two marine antimicrobial peptides (AMPs), PC-hepc from large yellow croaker (Pseudosciaena crocea) and scygonadin from mud crab (Scylla serrata), are potently active against specific bacteria and thus they could be used as substitutes for antibiotics in aquaculture. However, how to utilize the AMPs feasibly for marine cultured animals has been so far confused. In our study, a 510 bp of the Scy-hepc sequence was cloned into pMDC85 expression vector, which was then electroporated into Chlorella sp., and thus a transgenic Chlorella, in which the Scy-hepc gene was effectively expressed, was developed...
November 29, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29197524/mercuric-resistant-bacteria-aeromonas-exhibits-neurologic-toxic-effects-on-the-developmental-motor-reflexes-and-brain-oxidative-stress-in-mice-offspring
#13
Mohammad Ahmad
Mercury and its derivatives even in small concentration may cause a major human health problem. Though not reported in detail, there are various aquatic bacterial species that produce small quantities of methyl mercury (MM) growing under aerobic conditions. Consumption of food derived from sources contaminated with such bacteria within therapeutic doses and exposure to different forms of MM compounds through such sources may induce substantial toxic effects. In the present study, the perinatal oral exposure of pregnant mice to two strains of mercury resistant bacteria (MRB), Aeromonas KSU5 MRB and KSU6 MRB resulted in a significant reduction in postnatal body weight gain, delays in the opening of the eyes and appearance in the body hair fuzz, and deficits in the developing sensory motor reflexes in the mice pups during their weaning period on post-natal day (PD)7, PD14 and PD21...
November 29, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29193157/aeromonas-caviae-inhibits-hepatic-enzymes-of-the-phosphotransfer-network-in-experimentally-infected-silver-catfish-impairment-on-bioenergetics
#14
M D Baldissera, C F Souza, C M Verdi, K L M Dos Santos, M L Da Veiga, M I U M da Rocha, R C V Santos, B S Vizzotto, B Baldisserotto
Several studies have been demonstrated that phosphotransfer network, through the adenylate kinase (AK) and pyruvate kinase (PK) activities, allows for new perspectives leading to understanding of disease conditions associated with disturbances in energy metabolism, metabolic monitoring and signalling. In this sense, the aim of this study was to evaluate whether experimental infection by Aeromonas caviae alters hepatic AK and PK activities of silver catfish Rhamdia quelen. Hepatic AK and PK activities decreased in infected animals compared to uninfected animals, as well as the hepatic adenosine triphosphate (ATP) levels...
November 28, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/29192181/raman-deuterium-isotope-probing-for-in-situ-identification-of-antimicrobial-resistant-bacteria-in-thames-river
#15
Yizhi Song, Li Cui, José Ángel Siles López, Jiabao Xu, Yong-Guan Zhu, Ian P Thompson, Wei E Huang
The emergence and widespread distribution of antimicrobial resistant (AMR) bacteria has led to an increasing concern with respect to potential environmental and public health risks. Culture-independent and rapid identification of AMR bacteria in-situ in complex environments is important in understanding the role of viable but non-culturable and antibiotic persistent bacteria and in revealing potential pathogens without waiting for colony formation. In this study, a culture-independent and non-destructive phenotyping approach, so called Raman Deuterium Stable Isotope Probing (Raman-DIP), was developed to identify AMR bacteria in the River Thames...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29191795/glucan-mos%C3%A2-improved-growth-and-innate-immunity-in-pacu-stressed-and-experimentally-infected-with-aeromonas-hydrophila
#16
Michelly Pereira Soares, Fulvia Cristina Oliveira, Israel Luz Cardoso, Elisabeth Criscuolo Urbinati, Cristiane Meldau de Campos, Hamilton Hisano
We tested the efficacy of a commercial product (Glucan-MOS®) derived from yeast Saccharomyces cerevisiae, containing two combined products, β-1,3-1,6 glucans and mannans on the growth, feed efficiency, stress and innate immune responses of juvenile pacu (Piaractus mesopotamicus) after a stressful handling and bacterial inoculation. For this, we evaluated the serum cortisol and plasma glucose levels, the respiratory activity of leukocytes, the serum lysozyme levels, as well as the number of circulating erythrocytes and leukocytes of fish fed during 30 days with diets containing increased levels of Glucan-MOS (0...
November 27, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29188066/aeromonas-wound-infection-in-a-healthy-boy-and-wound-healing-with-polarized-light
#17
Bart Rutteman, Kristien Borremans, Jan Beckers, Els Devleeschouwer, Sybien Lampmann, Ivo Corthouts, Piet Verlinde
Introduction. At emergency departments, history taking is often very brief. We present a case of an Aeromonas wound infection, that illustrates the importance of careful history taking. We also report the first successful use of polarized light as additional therapy for healing of this infectious wound. Case presentation. A healthy boy was diagnosed with a wound infection, after a fall onto rocks. At first, it remained unmentioned that there had been contact with ditchwater, so he was treated with amoxicillin-clavulanic acid...
October 2017: JMM Case Reports
https://www.readbyqxmd.com/read/29181803/functional-characterization-of-probiotic-potential-of-novel-pigmented-bacterial-strains-for-aquaculture-applications
#18
Sekar Jinendiran, Seenivasan Boopathi, Natesan Sivakumar, Gopal Selvakumar
The bioprospecting proficient of novel pigmented probiotic strains with respect to aquaculture industry was unexplored hitherto. In this study, we investigated the probiotic potential of novel pigmented bacterial strains isolated from the indigenous soil sediments in their vicinal habitats, which were screened for their antimicrobial activity against aquatic pathogens using agar well diffusion assay. The strains namely Exiguobacterium acetylicum (S01), Aeromonas veronii (V03), and Chryseobacterium joostei (V04) were phenotypically identified and confirmed by 16S rRNA gene sequence analysis...
November 27, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/29179769/catalogue-of-antibiotic-resistome-and-host-tracking-in-drinking-water-deciphered-by-a-large-scale-survey
#19
Liping Ma, Bing Li, Xiao-Tao Jiang, Yu-Lin Wang, Yu Xia, An-Dong Li, Tong Zhang
BACKGROUND: Excesses of antibiotic resistance genes (ARGs), which are regarded as emerging environmental pollutants, have been observed in various environments. The incidence of ARGs in drinking water causes potential risks to human health and receives more attention from the public. However, ARGs harbored in drinking water remain largely unexplored. In this study, we aimed at establishing an antibiotic resistome catalogue in drinking water samples from a wide range of regions and to explore the potential hosts of ARGs...
November 28, 2017: Microbiome
https://www.readbyqxmd.com/read/29175764/the-effect-of-essential-oils-on-microbial-composition-and-quality-of-grass-carp-ctenopharyngodon-idellus-fillets-during-chilled-storage
#20
Zhan Huang, Xiaochang Liu, Shiliang Jia, Longteng Zhang, Yongkang Luo
Antimicrobial and antioxidant effects of essential oils (oregano, thyme, and star anise) on microbial composition and quality of grass carp fillets were investigated. Essential oils treatment was found to be effective in inhibiting microbial growth, delaying lipid oxidation, and retarding the increase of TVB-N, putrescine, hypoxanthine, and K-value. Based on sensory analysis, shelf-life of grass carp fillets was 6days for control and 8days for treatment groups. Among the essential oils, oregano essential oil exhibited the highest antimicrobial and antioxidant activities...
November 6, 2017: International Journal of Food Microbiology
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