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https://www.readbyqxmd.com/read/28738715/antimicrobial-modulatory-and-chemical-analysis-of-the-oil-of-croton-limae
#1
Tiago Rodrigues Leite, Maria Arlene Pessoa da Silva, Antônio Carlito Bezerra Dos Santos, Henrique Douglas Melo Coutinho, Antonia Eliene Duarte, José Galberto Martins da Costa
CONTEXT: Croton sp. are plants with a well-reported antimicrobial activity. Croton limae A.P. Gomes, M.F. Sales P.E. Berry (Euphorbiaceae), known as 'marmeleiro-prateado', is commonly used to manage abdominal pain in Brazil. OBJECTIVE: This work evaluates the phytochemical composition, antimicrobial and modulatory activities of the essential oil of C. limae leaves (EOCL). MATERIALS AND METHODS: The minimum inhibitory concentration (MIC) and the modulation of the antibiotic activity were determined using a microdilution method...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28725177/characterization-of-lgr5-progenitor-cell-transcriptomes-after-neomycin-injury-in-the-neonatal-mouse-cochlea
#2
Shasha Zhang, Yuan Zhang, Pengfei Yu, Yao Hu, Han Zhou, Lingna Guo, Xiaochen Xu, Xiaocheng Zhu, Muhammad Waqas, Jieyu Qi, Xiaoli Zhang, Yan Liu, Fangyi Chen, Mingliang Tang, Xiaoyun Qian, Haibo Shi, Xia Gao, Renjie Chai
Lgr5+ supporting cells (SCs) are enriched hair cell (HC) progenitors in the cochlea. Both in vitro and in vivo studies have shown that HC injury can spontaneously activate Lgr5+ progenitors to regenerate HCs in the neonatal mouse cochlea. Promoting HC regeneration requires the understanding of the mechanism of HC regeneration, and this requires knowledge of the key genes involved in HC injury-induced self-repair responses that promote the proliferation and differentiation of Lgr5+ progenitors. Here, as expected, we found that neomycin-treated Lgr5+ progenitors (NLPs) had significantly greater HC regeneration ability, and greater but not significant proliferation ability compared to untreated Lgr5+ progenitors (ULPs) in response to neomycin exposure...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28719473/delayed-patch-test-reading-after-5-days-an-update-from-the-mayo-clinic-contact-dermatitis-group
#3
Hafsa M Chaudhry, Lisa A Drage, Rokea A El-Azhary, Matthew R Hall, Jill M Killian, Amy V Prakash, James A Yiannias, Mark D P Davis
BACKGROUND: Patch-test readings after day 5 have previously been used to identify delayed reactions to metals and topical antibiotics. OBJECTIVE: The aims of this study were to identify allergens for which late readings (beyond day 5) would be most valuable and to compare our results with our previous study on delayed patch-test readings. METHODS: This was a retrospective study of 298 patients who underwent metal and corticosteroid series patch testing from January 1, 2007, through December 31, 2013...
July 2017: Dermatitis
https://www.readbyqxmd.com/read/28717851/multidrug-resistant-salmonellae-isolated-in-japanese-quails-reared-in-abeokuta-nigeria
#4
Ezekiel O Omoshaba, F O Olufemi, O E Ojo, A O Sonibare, M Agbaje
Salmonellosis is a major bacterial disease causing huge economic losses in the poultry industry worldwide. This study was carried out to determine the period prevalence and antimicrobial susceptibility of Salmonella enterica in Japanese quails in Abeokuta, Nigeria. Four hundred cloacal swabs of quail birds were collected from 4 locations within Abeokuta. Salmonella was isolated from the samples using conventional methods for selective isolation of Salmonella and biochemical identification. Isolates were confirmed by polymerase chain reaction assays for the amplification and detection of Salmonella-associated virulence genes (invA and stn) using specific primers...
July 17, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28711154/western-diet-induced-dysbiosis-in-farnesoid-x-receptor-knockout-mice-causes-persistent-hepatic-inflammation-after-antibiotic-treatment
#5
Prasant K Jena, Lili Sheng, Hui-Xin Liu, Karen M Kalanetra, Annie Mirsoian, William J Murphy, Samuel W French, Viswanathan V Krishnan, David A Mills, Yu-Jui Yvonne Wan
Patients who have liver cirrhosis and liver cancer also have reduced farnesoid X receptor (FXR). The current study analyzes the effect of diet through microbiota that affect hepatic inflammation in FXR knockout (KO) mice. Wild-type and FXR KO mice were on a control (CD) or Western diet (WD) for 10 months. In addition, both CD- and WD-fed FXR KO male mice, which had hepatic lymphocyte and neutrophil infiltration, were treated by vancomycin, polymyxin B, and Abx (ampicillin, neomycin, metronidazole, and vancomycin)...
July 11, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28701305/redox-and-activation-of-protein-kinase-a-dysregulates-calcium-homeostasis-in-pulmonary-vein-cardiomyocytes-of-chronic-kidney-disease
#6
Shih-Yu Huang, Yao-Chang Chen, Yu-Hsun Kao, Ming-Hsiung Hsieh, Yung-Kuo Lin, Shih-Ann Chen, Yi-Jen Chen
BACKGROUND: Chronic kidney disease (CKD) increases the occurrence of atrial fibrillation and pulmonary vein (PV) arrhythmogenesis. Calcium dysregulation and reactive oxygen species (ROS) enhance PV arrhythmogenic activity. The purposes of this study were to investigate whether CKD modulates PV electrical activity through dysregulation of calcium homeostasis and ROS. METHODS AND RESULTS: Biochemical and electrocardiographic studies were conducted in rabbits with and without CKD (induced by 150 mg/kg per day neomycin sulfate and 500 mg/kg per day cefazolin)...
July 12, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28685903/the-structure-of-rbmb-from-streptomyces-ribosidificus-an-aminotransferase-involved-in-the-biosynthesis-of-ribostamycin
#7
Trevor R Zachman-Brockmeyer, James B Thoden, Hazel M Holden
Aminoglycoside antibiotics represent a classical group of antimicrobials first discovered in the 1940s. Due to their ototoxic and nephrotoxic side effects, they are typically only used against Gram negative bacteria who have become resistant to other therapeutics. One family of aminoglycosides include such compounds as butirosin, ribostamycin, neomycin, and kanamycin, amongst others. The common theme in these antibiotics is that they are constructed around a chemically stable aminocyclitol unit referred to as 2-deoxystreptamine (2-DOS)...
July 7, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28674316/vibrio-cholerae-o1-ogawa-strains-carrying-the-ctxb7-allele-caused-large-cholera-outbreak-during-2014-in-the-tribal-areas-of-odisha-india
#8
Bibhuti Bhusan Pal, Hemant Kumar Khuntia, Smruti Ranjan Nayak, Anima Mohanty, Bhagyalaxmi Biswal
The large outbreak of cholera reported during July to Sept, 2014 in Narla block of Kalahandi district was investigated to find out the causative organism. The rectal swabs collected from diarrhoea patients and environmental water samples were sub-cultured following standard techniques. The causative organism was V.cholerae O1 Ogawa biotype El Tor while DMAMA-PCR assay confirmed that all strains were ctxB7 of Haitian variants V.cholerae O1. The water samples were negative for V. cholerae .The V.cholerae O1 strains were sensitive to tetracycline, ciprofloxacin, norfloxacin, ofloxacin, doxycycline, azithromycin,; but were resistant to erythromycin, gentamicin, chloramphenicol, furazolidone, neomycine, cotrimoxazole, nalidixic acid and ampicilin...
July 1, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28665034/ultrahigh-dose-gentamicin-alters-inflammation-and-angiogenesis-in-vivo-and-in-vitro
#9
Melissa A Olekson, Lloyd F Rose, Anders H Carlsson, John L Fletcher, Kai P Leung, Rodney K Chan
Skin quality outcome after skin grafting is adversely affected by wound bed inflammation. Neomycin, gentamicin, and other aminoglycoside antibiotics are known to modulate inflammation, and topical application affords the use of higher doses than are possible to use systemically. Previous data suggest that clinically relevant doses of neomycin, but not gentamicin, may impair angiogenesis, which is critical to the durable survival of skin grafts. The role of gentamicin at ultrahigh doses compared with clinically relevant neomycin doses in regulating inflammatory expression and angiogenesis has been examined...
June 30, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28652422/improvement-effect-of-dewaxed-brown-rice-on-constipation-in-antibiotic-treated-mice
#10
Hiroyuki Inagawa, Toshiyuki Saika, Naoki Nishiyama, Takashi Nisizawa, Chie Kohchi, Maya Uenobe, Gen-Ichiro Soma
BACKGROUND/AIM: A decrease in gastrointestinal motility causing weakened lipopolysaccharide (LPS) - toll-like receptor (TLR)4 signaling along with a decline in the number of enteric bacteria is known to be a cause of constipation due to the administration of antibiotics. A new type of brown rice with its wax layer removed, resulting in quick-cooking and tasty product, contains 100-times more LPS than polished white rice. In this study, the improvement effect on constipation due to intake of dewaxed brown rice was examined...
July 2017: In Vivo
https://www.readbyqxmd.com/read/28647881/alterations-in-soil-microbial-communities-caused-by-treatments-with-penicillin-or-neomycin
#11
Qichun Zhang, Ouyang Kang, Salma Jabeen, Warren A Dick
Antibiotic residues in soils can lead to serious health risk and ecological hazards. In this study, the effects of penicillin and neomycin, two antibiotics widely used in animal production, were investigated on soil bacterial communities. Changes in the community structure were monitored using three 16S ribosomal DNA (rDNA) polymerase chain reaction-based approaches, including denaturing gradient gel electrophoresis (DGGE), amplified rDNA restriction analysis (ARDRA), and terminal-restriction fragment length polymorphism (T-RFLP) analysis...
June 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28640905/an-efficient-method-for-transgenic-callus-induction-from-vitis-amurensis-petiole
#12
Tingting Zhao, Zemin Wang, Lingye Su, Xiaoming Sun, Jun Cheng, Langlang Zhang, Sospeter Karanja Karungo, Yuepeng Han, Shaohua Li, Haiping Xin
Transformation is the main platform for genetic improvement and gene function studies in plants. However, the established somatic embryo transformation system for grapevines is time-consuming and has low efficiency, which limits its utilization in functional genomics research. Vitis amurensis is a wild Vitis species with remarkable cold tolerance. The lack of an efficient genetic transformation system for it has significantly hindered the functional identification of cold stress related genes in the species...
2017: PloS One
https://www.readbyqxmd.com/read/28619154/an-unusual-culprit-klebsiella-pneumoniae-causing-septicaemia-outbreaks-in-neonatal-pigs
#13
Bethany G Bowring, V Anthony Fahy, Andrew Morris, Alison M Collins
This study investigated the cause of recent outbreaks of septicaemia in neonatal pigs in Australia (Victoria and Queensland). Septicaemia in neonatal pigs is commonly caused by enterotoxigenic E. coli, extraintestinal pathogenic E. coli and beta-haemolytic streptococci. Infrequent causes of septicaemia are Actinobacillus suis and Citrobacter freundii. Therefore, it was quite unexpected when Klebsiella pneumoniae was isolated in predominant growth from multiple organs of pigs dying of septicaemia from six days of age...
May 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28608297/neomycin-polymyxin-b-and-dexamethasone-allergic-reactions-following-periocular-surgery
#14
Nicholas A Moore, Craig N Czyz, Tracy D Carter, Jill A Foster, Kenneth V Cahill
BACKGROUND: The aim of this study was to evaluate the rate of periocular allergic skin reactions to topical neomycin, polymyxin B, and dexamethasone (NPD) ophthalmic ointment. METHODS: A consecutive patient prospective study was performed. A total of 522 patients who had a procedure involving incision of the periocular skin with subsequent postoperative application of NPD ophthalmic ointment were included. Patients were evaluated for signs of allergy at 1 week postoperatively or prior if the patient had complaints...
December 2017: Journal of Ophthalmic Inflammation and Infection
https://www.readbyqxmd.com/read/28604843/alcohol-associated-intestinal-dysbiosis-impairs-pulmonary-host-defense-against-klebsiella-pneumoniae
#15
Derrick R Samuelson, Judd E Shellito, Vincent J Maffei, Eric D Tague, Shawn R Campagna, Eugene E Blanchard, Meng Luo, Christopher M Taylor, Martin J J Ronis, Patricia E Molina, David A Welsh
Chronic alcohol consumption perturbs the normal intestinal microbial communities (dysbiosis). To investigate the relationship between alcohol-mediated dysbiosis and pulmonary host defense we developed a fecal adoptive transfer model, which allows us to investigate the impact of alcohol-induced gut dysbiosis on host immune response to an infectious challenge at a distal organ, independent of prevailing alcohol use. Male C57BL/6 mice were treated with a cocktail of antibiotics (ampicillin, gentamicin, neomycin, vancomycin, and metronidazole) via daily gavage for two weeks...
June 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28591515/roc-n-ribo-characterizing-a-riboswitching-expression-system-by-modeling-single-cell-data
#16
Christopher Schneider, Leo Bronstein, Jascha Diemer, Heinz Koeppl, Beatrix Suess
RNA-engineered systems offer simple and versatile control over gene expression in many organisms. In particular, the design and implementation of riboswitches presents a unique opportunity to manipulate any reporter device in cis, executing tight temporal and spatial control at low metabolic costs. Assembled to higher order genetic circuits, such riboswitch-regulated devices may efficiently process logical operations. Here, we propose a hierarchical stochastic modeling approach to characterize an in silico repressor gate based on neomycin- and tetracycline-sensitive riboswitches...
June 30, 2017: ACS Synthetic Biology
https://www.readbyqxmd.com/read/28577759/pip40a-a-type-1-incc-plasmid-from-1969-carries-the-integrative-element-gisul2-and-a-novel-class-ii-mercury-resistance-transposon
#17
Christopher J Harmer, Mohammad Hamidian, Ruth M Hall
The 167.5kb sequence of the conjugative IncC plasmid pIP40a, isolated from a Pseudomonas aeruginosa in 1969, was analysed. pIP40a confers resistance to kanamycin, neomycin, ampicillin, sulphonamides and mercuric ions, and several insertions in a type 1 IncC backbone were found, including copies of IS3, Tn1000 and a novel mercury resistance transposon, Tn6182. The antibiotic resistance genes were in two locations. Tn6023, containing the aphA1 kanamycin and neomycin resistance gene, is in a partial copy of Tn1/Tn2/Tn3 (blaTEM, ampicillin resistance) in the kfrA gene, and the sul2 sulphonamide resistance gene is in the integrative element GIsul2 in the position of ARI-B islands...
May 31, 2017: Plasmid
https://www.readbyqxmd.com/read/28544585/effects-of-ophthalmologic-solutions-on-sinonasal-ciliated-epithelium
#18
Alan D Workman, Ryan M Carey, Michael A Kohanski, Nithin D Adappa, James N Palmer, Noam A Cohen
BACKGROUND: Off-label use of topical ophthalmologic formulations for treatment of rhinologic disease is cited in recent literature and is anecdotally prevalent among practicing otolaryngologists. Steroids, antibiotics, and other drugs designed for ocular use have subjective clinical efficacy in the nose and sinuses, but their specific effects on the ciliated epithelium are less well defined. This study examines 9 commercially available ophthalmologic drug formulations for effects on ciliary motility in sinonasal cultures, in an effort to characterize their utility as topical therapies for sinonasal diseases...
May 23, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28526020/salmonella-serotypes-and-their-antimicrobial-susceptibility-in-apparently-healthy-dogs-in-addis-ababa-ethiopia
#19
Bitsu Kiflu, Haile Alemayehu, Mukarim Abdurahaman, Yohannes Negash, Tadesse Eguale
BACKGROUND: The close bond between pet animals and family members poses risk of infection with zoonotic bacterial pathogens such as Salmonella. No data is available on occurrence of Salmonella in dogs in Ethiopia. The aim of this study was therefore to determine the prevalence, serotype distribution and antimicrobial resistance of Salmonella from feces of apparently healthy dogs in Addis Ababa, Ethiopia. RESULTS: Of the total 360 dogs examined, 42 (11.7%; 95% Confidence limit of 8...
May 19, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28518283/branched-chain-amino-acids-for-people-with-hepatic-encephalopathy
#20
REVIEW
Lise Lotte Gluud, Gitte Dam, Iñigo Les, Giulio Marchesini, Mette Borre, Niels Kristian Aagaard, Hendrik Vilstrup
BACKGROUND: Hepatic encephalopathy is a brain dysfunction with neurological and psychiatric changes associated with liver insufficiency or portal-systemic shunting. The severity ranges from minor symptoms to coma. A Cochrane systematic review including 11 randomised clinical trials on branched-chain amino acids (BCAA) versus control interventions has evaluated if BCAA may benefit people with hepatic encephalopathy. OBJECTIVES: To evaluate the beneficial and harmful effects of BCAA versus any control intervention for people with hepatic encephalopathy...
May 18, 2017: Cochrane Database of Systematic Reviews
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