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https://www.readbyqxmd.com/read/28728024/origins-of-cell-type-specific-olfactory-processing-in-the-drosophila-mushroom-body-circuit
#1
Kengo Inada, Yoshiko Tsuchimoto, Hokto Kazama
How cell-type-specific physiological properties shape neuronal functions in a circuit remains poorly understood. We addressed this issue in the Drosophila mushroom body (MB), a higher olfactory circuit, where neurons belonging to distinct glomeruli in the antennal lobe feed excitation to three types of intrinsic neurons, α/β, α'/β', and γ Kenyon cells (KCs). Two-photon optogenetics and intracellular recording revealed that whereas glomerular inputs add similarly in all KCs, spikes were generated most readily in α'/β' KCs...
July 19, 2017: Neuron
https://www.readbyqxmd.com/read/28724955/mushroom-lectin-overcomes-hepatitis-b-virus-tolerance-via-tlr6-signaling
#2
Meina He, Dan Su, Qinghong Liu, Wenjuan Gao, Youmin Kang
Currently, chronic hepatitis B virus (HBV) infection remains a serious public health problem in the world. Recombinant HBV vaccine, as a preventive strategy against HBV infection, generates high antibody level, but it is not effective to activate innate and cellular immunity for chronic HBV infection therapy. Lectins from mushroom are natural and active proteins which have been shown important biological functions. However, little is known about the immunological mechanism engaged by mushroom lectins. Here we report that, lectin from Pleurotus ostreatus (POL) stimulated innate response by activating Toll-like receptor 6 signal pathway of dendritic cells...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28722830/ralfuranones-contribute-to-mushroom-type-biofilm-formation-by-ralstonia-solanacearum-strain-oe1-1
#3
Yuka Mori, Yuki Hosoi, Shiho Ishikawa, Kazusa Hayashi, Yu Asai, Hideyuki Ohnishi, Mika Shimatani, Kanako Inoue, Kenichi Ikeda, Hitoshi Nakayashiki, Yasuyo Nishimura, Kouhei Ohnishi, Akinori Kiba, Kenji Kai, Yasufumi Hikichi
After invasion into intercellular spaces of tomato plants, the soil-borne plant pathogenic Ralstonia solanacearum strain OE1-1 forms mushroom-shaped biofilms (mushroom-type biofilms, mBFs) on tomato cells, leading to its virulence. The strain OE1-1 produces aryl-furanone secondary metabolites, ralfuranones (A, B, J, K and L), dependent on the quorum sensing (QS) system with methyl 3-hydroxymyristate (3-OH MAME) synthesized by PhcB as a QS signal. Ralfuranones are associated with the feedback loop of the QS system...
July 19, 2017: Molecular Plant Pathology
https://www.readbyqxmd.com/read/28722414/mushroom-derived-indole-alkaloids
#4
Joshua A Homer, Jonathan Sperry
Mushrooms are known to produce over 140 natural products bearing an indole heterocycle. In this review, the isolation of these mushroom-derived indole alkaloids is discussed, along with their associated biological activities.
July 19, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28718825/olive-mill-waste-enhances-%C3%AE-glucan-content-in-the-edible-mushroom-pleurotus-eryngii
#5
Sharon Avni, Nirit Ezove, Hilla Hanani, Itamar Yadid, Michal Karpovsky, Hilla Hayby, Ofer Gover, Yitzhak Hadar, Betty Schwartz, Ofer Danay
Mushroom polysaccharides are edible polymers that have numerous reported biological functions; the most common effects are attributed to β-glucans. In recent years, it became apparent that the less abundant α-glucans also possess potent effects in various health conditions. Here we explore several Pleurotus species for their total, β and α-glucan content. Pleurotus eryngii was found to have the highest total glucan concentrations and the highest α-glucans proportion. We also found that the stalks (stipe) of the fruit body contained higher glucan content then the caps (pileus)...
July 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28718765/a-connectome-of-a-learning-and-memory-center-in-the-adult-drosophila-brain
#6
Shin-Ya Takemura, Yoshinori Aso, Toshihide Hige, Allan Wong, Zhiyuan Lu, C Shan Xu, Patricia K Rivlin, Harald F Hess, Ting Zhao, Toufiq Parag, Stuart Berg, Gary Huang, William Katz, Donald J Olbris, Stephen Plaza, Lowell Umayam, Roxanne Aniceto, Lei-Ann Chang, Shirley Lauchie, Omotara Ogundeyi, Christopher Ordish, Aya Shinomiya, Christopher Sigmund, Satoko Takemura, Julie Tran, Glenn C Turner, Gerald M Rubin, Louis K Scheffer
Understanding memory formation, storage and retrieval requires knowledge of the underlying neuronal circuits. In Drosophila, the mushroom body (MB) is the major site of associative learning. We reconstructed the morphologies and synaptic connections of all 983 neurons within the three functional units, or compartments, that compose the adult MB's α lobe, using a dataset of isotropic 8-nm voxels collected by focused ion-beam milling scanning electron microscopy. We found that Kenyon cells (KCs), whose sparse activity encodes sensory information, each make multiple en passant synapses to MB output neurons (MBONs) in each compartment...
July 18, 2017: ELife
https://www.readbyqxmd.com/read/28715178/flexible-and-robust-superomniphobic-surfaces-created-by-localized-photofluidization-of-azopolymer-pillars
#7
Jaeho Choi, Wonhee Jo, Seung Yeol Lee, Yeon Sik Jung, Shin-Hyun Kim, Hee-Tak Kim
Springtails, insects which breathe through their skins, possess mushroom-shaped nanostructures. As doubly re-entrant geometry in the mushroom head enhances the resistance against liquid invasion, the springtails have robust, liquid-free omniphobic skins. Although omniphobic surfaces are promising for various applications, it remains an important challenge to mimic the structural feature of springtails. This paper presents a pragmatic method to create doubly re-entrant nanostructures and robust superomniphobic surfaces by exploiting localized photofluidization of azopolymers...
July 19, 2017: ACS Nano
https://www.readbyqxmd.com/read/28714027/enhanced-anticancer-effects-of-a-mixture-of-low-dose-mushrooms-and-panax-ginseng-root-extracts-in-human-colorectal-cancer-cells
#8
Mi So Lee, Mi-Sook Kim, Jae Kuk Yoo, Ji Young Lee, Jae Eun Ju, Youn Kyoung Jeong
Worldwide, colorectal cancer is the third most common cancer in men and the second most common in women. As conventional colorectal cancer therapies result in various side effects, there is a need for adjuvant therapy that can enhance the conventional therapies without complications. In this study, we investigated the anticancer effects of combined mixture of the several medicinal mushrooms and Panax ginseng root extracts (also called Amex7) as an adjuvant compound in the treatment of human colorectal cancer...
July 7, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28713046/a-90-day-oral-toxicity-study-of-glycolipids-from-dacryopinax-spathularia-in-beagle-dogs
#9
Jens Bitzer, Thomas Henkel, Andrey I Nikiforov, Marisa O Rihner, Kim A Henderson
The subchronic toxicity of glycolipids from Dacryopinax spathularia (herein referred to as "AM-1") was studied in male and female Beagle dogs administered AM-1 by oral capsule at doses of 150, 500 or 1000 mg/kg/day for 90 days. AM-1 was well tolerated at all dosages and there were no test article-related effects on survival, clinical observations, neurological screening (functional observational battery) parameters, clinical pathology parameters, organ weights, macroscopic or microscopic evaluations. Test article-related changes were limited to minimal effects on food consumption and body weight changes in the 1000 mg/kg/day group females...
July 13, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28711736/two-dose-investigation-of-the-5-ht-agonist-psilocybin-on-relative-and-global-cerebral-blood-flow
#10
Candace R Lewis, Katrin H Preller, Rainer Kraehenmann, Lars Michels, Philipp Stämpfli, Franz X Vollenweider
Psilocybin, the active compound in psychedelic mushrooms, is an agonist of various serotonin receptors. Seminal psilocybin positron emission tomography (PET) research suggested regional increases in glucose metabolism in frontal cortex (hyperfrontality). However, a recent arterial spin labeling (ASL) study suggests psilocybin may lead to hypo-perfusion in various brain regions. In this placebo-controlled, double-blind study we used pseudo-continuous ASL (pCASL) to measure perfusion changes, with and without adjustment for global brain perfusion, after two doses of oral psilocybin (low dose: 0...
July 12, 2017: NeuroImage
https://www.readbyqxmd.com/read/28708030/growth-kinetics-of-listeria-monocytogenes-in-cut-produce
#11
Joelle K Salazar, Surasri N Sahu, Ian M Hildebrandt, Lijie Zhang, Yan Qi, Girvin Liggans, Atin R Datta, Mary Lou Tortorello
Cut produce continues to constitute a significant portion of the fresh fruit and vegetables sold directly to consumers. As such, the safety of these items during storage, handling, and display remains a concern. Cut tomatoes, cut leafy greens, and cut melons, which have been studied in relation to their ability to support pathogen growth, have been specifically identified as needing temperature control for safety. Data are needed on the growth behavior of foodborne pathogens in other types of cut produce items that are commonly offered for retail purchase and are potentially held without temperature control...
July 14, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28707897/redox-interconversion-of-non-oxido-vanadium-complexes-accompanied-by-acid-base-chemistry-of-thiol-and-thiolate
#12
Jyun-An Yan, Yu-Sen Chen, Ya-Ho Chang, Cheng-Yun Tsai, Chiao-Ling Lyu, Chun-Gang Luo, Gene-Hsiang Lee, Hua-Fen Hsu
The redox nature of the non-oxido vanadium sulfur center is associated with several biological systems such as vanadium nitrogenase, the reduction of vanadium ion in ascidians, and the function of amavadin, which is a vanadium(IV) natural product contained in Amanita mushrooms. But the related chemistry is less explored and understood compared to oxido vanadium species due to the oxophilic character of high valent vanadium ions. Herein, we present a class of non-oxido vanadium thiolate complexes, [V(III)(PS2″S(H))2](-) (1) (PS2″S(H) = [P(C6H3-3-Me3Si-2-S)2(C6H3-3-Me3Si-2-SH)](2-)), [V(IV)(PS3″)(PS2″S(H))](-) (2) (PS3″ = [P(C6H3-3-Me3Si-2-S)3](3-)), [V(PS3″)2](-) (3), [V(PS3″)(PS2″S(H))] (4), and [V(IV)(PS3*)2](2-) (5a) (PS3* = [P(C6H3-3-Ph-2-S)3](3-)), and study their interconversion through the redox and acid-base reactions...
July 14, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28704469/the-relationship-between-a-low-grain-intake-dietary-pattern-and-impulsive-behaviors-in-middle-aged-japanese-people
#13
Atsuhito Toyomaki, Minori Koga, Emiko Okada, Yukiei Nakai, Akane Miyazaki, Akiko Tamakoshi, Yoshinobu Kiso, Ichiro Kusumi
Several studies indicate that dietary habits are associated with mental health. We are interested in identifying not a specific single nutrient/food group but the population preferring specific food combinations that can be related to mental health. Very few studies have examined relationships between dietary patterns and multifaceted mental states using cluster analysis. The purpose of this study was to investigate population-level dietary patterns associated with mental state using cluster analysis. We focused on depressive state, sleep quality, subjective well-being, and impulsive behaviors using rating scales...
2017: PloS One
https://www.readbyqxmd.com/read/28702910/a-novel-biocoagulant-agent-from-mushroom-chitosan-as-water-and-wastewater-therapy
#14
Oday Adnan, Zurina Z Abidin, Azni Idris, Suryani Kamarudin, Mothanna Sadiq Al-Qubaisi
A new commercial cationic polyelectrolyte chitosan (CM), obtained from the waste of mushroom production, was examined using models of water and wastewater namely kaolin and palm oil mill effluent (pome). As it is biocompatible, widely available, and economically feasible, chitosan mushroom has high potential to be a suitable replacement for alum. Also, it can be a promising alternative to chitosan obtained traditionally from Crustaceans due to its higher zeta potential and homogeneity based on the raw material required for its production...
July 12, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28702429/wild-mushrooms-a-potential-source-of-nutritional-and-antioxidant-attributes-with-acceptable-toxicity
#15
Sumaira Sharif, Muhammad Shahid, Muhammad Mushtaq, Sumia Akram, Ayoub Rashid
This paper describes in detail proximate composition, nutritional profile, phytochemical constituents, antioxidant activities, antimicrobial potential, and antihemolytic activity (towards human erythrocytes) of various fractions of wild Ganoderma lucidum. Proximate analysis established that wild G. lucidum comprises about 87.02±5.45% of moisture, and the remaining part is a rich source of proteins (8.59±0.37%), crude fiber (54.21±1.2%), and carbohydrate (35.16%) with smaller fat content (3.33 %). Similarly, phytochemical screening revealed the presence of flavonoids (217...
June 2017: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/28700109/biological-responses-in-balb-c-mice-after-long-term-parenteral-administration-of-the-light-subunit-of-mushroom-tyrosinase
#16
Wangsa T Ismaya, Alida Efthyani, Raymond R Tjandrawinata, Heni Rachmawati
Light subunit of mushroom tyrosinase (LSMT) is a protein of unknown function from mushroom Agaricus bisporus that has been demonstrated to permeate through rat intestine ex vivo. Thus, it can be absorbed in the intestine, thereby holding a promise as a drug carrier for oral administration, similar to HA-33 protein from botulinum, one of the closest structural homologs of LSMT. However, the safety of LSMT should be ensured prior to its use. Here, we described biological response of LSMT upon weekly intraperitoneal administration of 50 μg/day to the Balb/c mice for 12 weeks...
July 12, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28698573/tropic-origins-a-dispersal-model-for-saprotrophic-mushrooms-in-agaricus-section-minores-with-descriptions-of-sixteen-new-species
#17
Mao-Qiang He, Jie Chen, Jun-Liang Zhou, Cheewangkoon Ratchadawan, Kevin D Hyde, Rui-Lin Zhao
Agaricus section Minores contains the richest species diversity within the genus. Its Phylogeny is firstly presented by a Maximum Likelihood tree generated through DNA sequences from four gene regions of 91 species. Furthermore, a molecular dating analysis is conducted used those sequences, and it provided the divergence times of the clades within section Minores. Study showed section Minores has a tropical origin. Four main dispersal routes are proposed: (1) species from South Asia migrated through the Tibetan Plateau and reached Europe ca...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28697261/toxic-mushrooms-in-california
#18
Rebecca Voelker
No abstract text is available yet for this article.
July 11, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28692865/live-cell-confocal-laser-imaging-studies-on-the-nuclear-behavior-during-meiosis-and-ascosporogenesis-in-morchella-importuna-under-artificial-cultivation
#19
Peixin He, Ke Wang, Yingli Cai, Wei Liu
The commercial production of Morchella mushrooms, especially M. importuna, has been realized since 2012 in China, which facilitates the fundamental studies of Morchella spp. In this paper, the cytological characteristics at three stages of ascocarpic development and the nuclear behavior during meiosis and ascosporogenesis in cultivated strain M. importuna 1(#) was visualized by confocal laser scanning microscopy. The results suggested that the strain sporulated at sporulation stage of ascocarpic development...
June 29, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28691489/matsutakone-and-matsutoic-acid-two-nor-steroids-with-unusual-skeletons-from-the-edible-mushroom-tricholoma-matsutake
#20
Zhen-Zhu Zhao, He-Ping Chen, Bin Wu, Ling Zhang, Zheng-Hui Li, Tao Feng, Ji-Kai Liu
Matsutakone (1), a novel sterol with an unprecedented polycyclic ring system, together with a new norsteroid matsutoic acid (2), were isolated from the fruiting bodies of Tricholoma matsutake. Their structures and absolute configurations were assigned by extensive spectroscopic analyses and computational methods. Bioassay results showed that compounds 1 and 2 exhibited inhibitory activities against acetylcholinesterase (IC50 20.9 μM for 1).
July 10, 2017: Journal of Organic Chemistry
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