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https://www.readbyqxmd.com/read/28330090/piper-betle-leaf-extract-affects-the-quorum-sensing-and-hence-virulence-of-pseudomonas-aeruginosa-pao1
#1
Siraj Datta, Debanjan Jana, Tilak Raj Maity, Aveek Samanta, Rajarshi Banerjee
Quorum sensing (QS) plays an important role in virulence of Pseudomonas aeruginosa, blocking of QS ability are viewed as viable antimicrobial chemotherapy and which may prove to be a safe anti-virulent drug. Bioactive components from Piper betle have been reported to possess antimicrobial ability. This study envisages on the anti-QS properties of ethanolic extract of P. betle leaf (PbLE) using P. aeruginosa PAO1 as a model organism. A marked reduction in swarming, swimming, and twitching ability of the bacteria is demonstrated in presence of PbLE...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329712/toxicity-of-effluents-from-gasoline-stations-oil-water-separators-to-early-life-stages-of-zebrafish-danio-rerio
#2
Romulo Nepomuceno Alves, Célio Freire Mariz, Driele Ventura de Paulo, Paulo S M Carvalho
Used petroleum hydrocarbons and gasoline stations runoff are significant sources of polycyclic aromatic hydrocarbons (PAHs) to aquatic ecosystems. Samples of the final effluent of oil-water-separators were collected at gasoline stations in the metropolitan region of Recife, Brazil, before release to sewage or rainwater systems. Effluent soluble fractions (ESF) were prepared and bioassays were performed according to the Fish Embryo Toxicity Test. The test involved exposing zebrafish Danio rerio embryos to dilutions of the ESFs for 96 h, with daily examination of lethality and sublethal morphological effects integrated through the General Morphology Score (GMS), based on the achievement of developmental hallmarks...
March 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28329063/lysosomal-proteolysis-is-associated-with-exercise-induced-improvement-of-mitochondrial-quality-control-in-aged-hippocampus
#3
Li Luo, Jia-Ru Dai, Shan-Shan Guo, A-Ming Lu, Xiao-Fang Gao, Yan-Rong Gu, Xiao-Fei Zhang, Hai-Dong Xu, Yan Wang, Zhou Zhu, Lisa J Wood, Zheng-Hong Qin
Exercise improves cognitive function in older adults, but the underlying mechanism is largely unknown. Both lysosomal degradation and mitochondrial quality control decline with age. We hypothesized that exercise ameliorates age-related cognitive decline through the improvement of mitochondrial quality control in aged hippocampus, and this effect is associated with lysosomal proteolysis. Sixteen to eighteen-month old male Sprague Dawley rats underwent swim exercise training for 10 weeks. The exercise regimen prevented cognitive decline in aged rats, reduced oxidative stress, and rejuvenated mitochondria in the aged hippocampus...
January 19, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28325014/real-time-monitoring-of-swimming-performance
#4
R Delgado-Gonzalo, A Lemkaddem, Ph Renevey, E Muntane Calvo, M Lemay, K Cox, D Ashby, J Willardson, M Bertschi
This article presents the performance results of a novel algorithm for swimming analysis in real-time within a low-power wrist-worn device. The estimated parameters are: lap count, stroke count, time in lap, total swimming time, pace/speed per lap, total swam distance, and swimming efficiency (SWOLF). In addition, several swimming styles are automatically detected. Results were obtained using a database composed of 13 different swimmers spanning 646 laps and 858.78 min of total swam time. The final precision achieved in lap detection ranges between 99...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324708/removal-of-haloacetic-acids-from-swimming-pool-water-by-reverse-osmosis-and-nanofiltration
#5
Linyan Yang, Qianhong She, Man Pun Wan, Rong Wang, Victor W-C Chang, Chuyang Y Tang
Recent studies report high concentrations of haloacetic acids (HAAs), a prevalent class of toxic disinfection by-products, in swimming pool water (SPW). We investigated the removal of 9 HAAs by four commercial reverse osmosis (RO) and nanofiltration (NF) membranes. Under typical SPW conditions (pH 7.5 and 50 mM ionic strength), HAA rejections were >60% for NF270 with molecular weight cut-off (MWCO) equal to 266 Da and equal or higher than 90% for XLE, NF90 and SB50 with MWCOs of 96, 118 and 152 Da, respectively, as a result of the combined effects of size exclusion and charge repulsion...
March 10, 2017: Water Research
https://www.readbyqxmd.com/read/28324704/bxd-recombinant-inbred-strains-participate-in-social-preference-anxiety-and-depression-behaviors-along-sex-differences-in-cytokines-and-tactile-allodynia
#6
Caridad López-Granero, Alessandra Antunes Dos Santos, Beatriz Ferrer, Megan Culbreth, Sudipta Chakraborty, Angel Barrasa, Maria Gulinello, Aaron B Bowman, Michael Aschner
Depression and anxiety are the most common psychiatric disorders, representing a major public health concern. Dysregulation of oxidative and inflammatory systems may be associated with psychiatric disorders, such as depression and anxiety. Due to the need to find appropriate animal models to the understanding of such disorders, we queried whether 2 BXD recombinant inbred (RI) mice strains (BXD21/TyJ RI and BXD84/RwwJ RI mice) and C57BL/6 wild-type mice show differential performance in depression and anxiety related behaviors and biomarkers...
March 6, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28322983/the-relationship-between-fear-extinction-and-resilience-to-drug-dependence-in-rats
#7
Masaharu Ueno, Kazuo Yamada, Yukio Ichitani
Some individuals recover quickly from stressful events, while others do not; this suggests that there are individual differences in stress resilience. Previous studies in rats have shown that an animal's ability to extinguish conditioned fear can predict their stress resilience. In the present study, we investigated whether rats who are resilient or vulnerable to fear conditioning would consistently show resilient or vulnerable behaviors in other behavioral tests. Male Wistar-Imamichi rats were subjected to a series of behavioral tests, including open field, conditioned place-preference (CPP), forced swim and auditory fear conditioning...
March 18, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28322978/delta-opioid-receptor-antagonism-leads-to-excessive-ethanol-consumption-in-mice-with-enhanced-activity-of-the-endogenous-opioid-system
#8
Piotr Poznanski, Anna Lesniak, Michal Korostynski, Klaudia Szklarczyk, Marzena Lazarczyk, Piotr Religa, Magdalena Bujalska-Zadrozny, Bogdan Sadowski, Mariusz Sacharczuk
The opioid system modulates the central reinforcing effects of ethanol and participates in the etiology of addiction. However, the pharmacotherapy of ethanol dependence targeted on the opioid system is little effective and varies due to individual patients' sensitivity. In the present study, we used two mouse lines with high (HA) and low (LA) activity of the endogenous opioid system to analyze the effect of opioid receptor blockade on ethanol drinking behavior. We found that LA and HA lines characterized by divergent magnitudes of swim stress-induced analgesia also differ in ethanol intake and preference...
March 18, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28322281/identification-of-a-novel-fast-acting-gabaergic-antidepressant
#9
K M J McMurray, M J Ramaker, A M Barkley-Levenson, P S Sidhu, P K Elkin, M K Reddy, M L Guthrie, J M Cook, V H Rawal, L A Arnold, S C Dulawa, A A Palmer
Current pharmacotherapies for depression exhibit slow onset, side effects and limited efficacy. Therefore, identification of novel fast-onset antidepressants is desirable. GLO1 is a ubiquitous cellular enzyme responsible for the detoxification of the glycolytic byproduct methylglyoxal (MG). We have previously shown that MG is a competitive partial agonist at GABA-A receptors. We examined the effects of genetic and pharmacological inhibition of GLO1 in two antidepressant assay models: the tail suspension test (TST) and the forced swim test (FST)...
March 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28322276/identifying-fast-onset-antidepressants-using-rodent-models
#10
M J Ramaker, S C Dulawa
Depression is a leading cause of disability worldwide and a major contributor to the burden of suicide. A major limitation of classical antidepressants is that 2-4 weeks of continuous treatment is required to elicit therapeutic effects, prolonging the period of depression, disability and suicide risk. Therefore, the development of fast-onset antidepressants is crucial. Preclinical identification of fast-onset antidepressants requires animal models that can accurately predict the delay to therapeutic onset. Although several well-validated assay models exist that predict antidepressant potential, few thoroughly tested animal models exist that can detect therapeutic onset...
March 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28320887/hip-region-muscular-dystrophy-and-emergence-of-motor-deficits-in-dysferlin-deficient-bla-j-mice
#11
Nadia Nagy, Randal J Nonneman, Telmo Llanga, Catherine F Dial, Natallia V Riddick, Tom Hampton, Sheryl S Moy, Kimmo K Lehtimäki, Toni Ahtoniemi, Jukka Puoliväli, Hillarie Windish, Douglas Albrecht, Isabelle Richard, Matthew L Hirsch
The identification of a dysferlin-deficient animal model that accurately displays both the physiological and behavior aspects of human dysferlinopathy is critical for the evaluation of potential therapeutics. Disease progression in dysferlin-deficient mice is relatively mild, compared to the debilitating human disease which manifests in impairment of particular motor functions. Since there are no other known models of dysferlinopathy in other species, locomotor proficiency and muscular anatomy through MRI (both lower leg and hip region) were evaluated in dysferlin-deficient B6...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28319426/high-satisfaction-and-return-to-sports-after-total-shoulder-arthroplasty-in-patients-aged-55-years-and-younger
#12
Grant H Garcia, Joseph N Liu, Alec Sinatro, Hao-Hua Wu, Joshua S Dines, Russell F Warren, David M Dines, Lawrence V Gulotta
BACKGROUND: Young, active candidates for total shoulder arthroplasty (TSA) are a unique group of patients. Not only do they demand longevity and improved function, but they also desire a return to physical activities. PURPOSE: To determine the rate of return to sports in patients aged ≤55 years undergoing TSA. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: This was a retrospective review of consecutive patients who underwent anatomic TSA at a single institution...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28318734/effects-of-acetone-cyanohydrin-a-derivative-of-cassava-on-motor-activity-and-kidney-and-liver-function-in-wistar-rats
#13
E Rivadeneyra-Domínguez, C J Rosas-Jarquín, A Vázquez-Luna, R Díaz-Sobac, J F Rodríguez-Landa
INTRODUCTION: Acetone cyanohydrin (ACH) is a toxic substance present in cassava roots (Manihot esculenta Crantz) which results from enzymatic hydrolysis of linamarin. Long-term consumption is associated with 2 neurological disorders: konzo and tropical ataxic neuropathy. Previous studies have evaluated behavioural alterations linked to ACH consumption, but the toxic effects of this substance on physiological processes remain unknown. METHOD: 32 male Wistar rats were assigned to 4 experimental groups (n=8 per group): a vehicle group (0...
March 16, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28317895/upregulation-of-skeletal-muscle-pgc-1%C3%AE-through-the-elevation-of-cyclic-amp-levels-by-cyanidin-3-glucoside-enhances-exercise-performance
#14
Toshiya Matsukawa, Hideko Motojima, Yuki Sato, Shinya Takahashi, Myra O Villareal, Hiroko Isoda
Regular exercise and physical training enhance physiological capacity and improve metabolic diseases. Skeletal muscles require peroxisome proliferator-activated receptor-gamma coactivator-1α (PGC-1α) in the process of their adaptation to exercise owing to PGC-1α's ability to regulate mitochondrial biogenesis, angiogenesis, and oxidative metabolism. Cyanidin-3-glucoside (Cy3G) is a natural polyphenol and a nutraceutical factor, which has several beneficial effects on human health. Here, the effect of Cy3G on exercise performance and the underlying mechanisms involved were investigated...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317894/swim-a-computational-tool-to-unveiling-crucial-nodes-in-complex-biological-networks
#15
Paola Paci, Teresa Colombo, Giulia Fiscon, Aymone Gurtner, Giulio Pavesi, Lorenzo Farina
SWItchMiner (SWIM) is a wizard-like software implementation of a procedure, previously described, able to extract information contained in complex networks. Specifically, SWIM allows unearthing the existence of a new class of hubs, called "fight-club hubs", characterized by a marked negative correlation with their first nearest neighbors. Among them, a special subset of genes, called "switch genes", appears to be characterized by an unusual pattern of intra- and inter-module connections that confers them a crucial topological role, interestingly mirrored by the evidence of their clinic-biological relevance...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317121/divergence-in-physiological-factors-affecting-swimming-performance-between-anadromous-and-resident-populations-of-brook-charr-salvelinus-fontinalis
#16
A Crespel, A Dupont-Prinet, L Bernatchez, G Claireaux, R Tremblay, C Audet
In this study, an anadromous strain (L) and a freshwater-resident (R) strain of brook charr Salvelinus fontinalis as well as their reciprocal hybrids, were reared in a common environment and submitted to swimming tests combined with salinity challenges. The critical swimming speeds (Ucrit ) of the different crosses were measured in both fresh (FW) and salt water (SW) and the variations in several physiological traits (osmotic, energetic and metabolic capacities) that are predicted to influence swimming performance were documented...
March 19, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28315756/interleukin-4-is-a-participant-in-the-regulation-of-depressive-like-behavior
#17
Simone Wachholz, Alexandra Knorr, Leonie Mengert, Jennifer Plümper, Rainer Sommer, Georg Juckel, Astrid Friebe
Inflammatory immune activation has been frequently associated with the development of major depression. Microglia might serve as an important interface in this immune system-to-brain communication. Interleukin-4, the major Th2 type cytokine, might be protective against depression due to its ability to counter-regulate inflammation and to inhibit serotonin transporter activity. By using an Interferon-α mouse model, we show that a decreased IL-4 responsiveness of microglia was specifically related to the development of depressive-like behavior...
March 15, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28315441/physico-chemical-characteristics-and-fibril-forming-capacity-of-carp-swim-bladder-collagens-and-exploration-of-their-potential-bioactive-peptides-by-in-silico-approaches
#18
Gaurav Kumar Pal, P V Suresh
This study explores the sustainable valorization of carp swim bladder by-products. The high-value molecule collagens were successfully extracted from carp swim bladder with a yield of∼60% (dry weight basis) and characterized by sodium dodecyl sulfate polyacrylamide gel electrophoresis, UV-spectrum and Fourier transform infrared spectroscopy. The extracted collagens showed the fibril-forming ability and high denaturation temperature (38-39°C). Furthermore, the extracted collagens subjected to preparing bioactive collagen hydrolysates with potential antioxidant activities...
March 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28315374/glp-1-analogue-cjc-1131-prevents-amyloid-%C3%AE-protein-induced-impirments-of-spatial-memory-and-synaptic-plasticity-in-rats
#19
Sheng-Xiao Zhang, Hong-Yan Cai, Xiao-Wen Ma, Li Yuan, Jun Zhang, Zhao-Jun Wang, Yu-Feng Li, Jin-Shun Qi
Although amyloid β protein (Aβ) has been recognized as one of the main pathological characteristics in the brain of Alzheimer's disease (AD), the effective strategies against Aβ neurotoxicity are still deficient up to now. Glucagon-like peptide 1 (GLP-1), a natural gut hormone, was found to be effective in modulating insulin signaling and neural protection, but short half-life limited its clinical application in AD treatment. CJC-1131, a newly designed GLP-1 analogue with very longer half-life, has shown good effectiveness in the treatment of type 2 diabetes mellitus (T2DM)...
March 14, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28314218/microfauna-community-during-pulp-and-paper-wastewater-treatment-in-a-unox-system
#20
Katarzyna Bernat, Dorota Kulikowska, Adam Drzewicki
This study characterized the microfauna community during treatment of pulp and paper wastewater in a UNOX system aerated with pure oxygen, and with a high organic loading rate (0.4±0.06kg BOD/kg MLSSday), low sludge retention time (3.73±0.33 day), and high oxygen concentration (≤20mg O2/L) in comparison to municipal treatment systems. In the aeration tank, temperatures were high, averaging 35.7°C (March-May), then 38.9°C (June-August). Effluent quality was acceptable: 180±22mg COD/L, 7.2±2.1mg BOD5/L, and 33±5mg TSS/L...
March 2, 2017: European Journal of Protistology
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