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https://www.readbyqxmd.com/read/29146861/whole-genome-sequence-of-pantoea-americana-strain-vs1-an-extended-spectrum-%C3%AE-lactamase-producing-epibiont-isolated-from-magnolia-grandiflora
#1
Pushpa Lata, Subramaniam S Govindarajan, Feng Qi, Jian-Liang Li, Santosh K Maurya, Malaya K Sahoo
Pantoea americana strain VS1, an extended-spectrum β-lactamase-producing epibiont, was isolated from Magnolia grandiflora in central Florida, USA. Here, we report the de novo whole-genome sequence of this strain, which consists of a total of 191 contigs spanning 5,412,831 bp, with a GC content of 57.3% and comprising 4,836 predicted coding sequences.
November 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/29134185/infiltrative-intraocular-conjunctival-squamous-cell-carcinoma-after-local-resection-and-brachytherapy-clinical-and-pathological-findings
#2
Magnolia Trinidad Cano-Suárez, María Antonia Saornil-Álvarez, Ciro García-Álvarez, Francisco López-Lara, Jesús María Frutos-Baraja, Elena García-Lagarto
A pseudophakic 70-year-old man presented to the clinic with a slow-growing conjunctival mass in the left eye. He was diagnosed with a conjunctival exophytic lesion suspicious of invasive conjunctival squamous cell carcinoma (CSCC). Excisional biopsy showed a well-differentiated CSCC with positive margins and the patient underwent adjuvant brachytherapy. Six weeks later, examination of the anterior segment revealed cells in the anterior chamber and a neurotrophic corneal ulcer with corneal perforation. Considering the high suspicion of intraocular invasion of CSCC, the left eye was enucleated...
September 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29125028/molecular-basis-of-citrus-sunki-susceptibility-and-poncirus-trifoliata-resistance-upon-phytophthora-parasitica-attack
#3
Ronaldo J D Dalio, Heros José Máximo, Tiago Silva Oliveira, Thamara Azevedo, Henrique Leme Felizatti, Magnólia Araújo Campos, Marcos Antonio Antonio Machado
Coevolution has shaped the molecular basis of an extensive number of defense mechanisms in plant-pathogen interactions. Phytophthora parasitica, a hemibiothrophic oomycete pathogen and the causal agent of citrus root rot and gummosis, interacts differently with Citrus sunki and Poncirus trifoliata; two commonly favored citrus rootstocks that are recognized as susceptible and resistant, respectively, to P. parasitica. The molecular core of these interactions remains elusive. Here, we provide evidences on the defense strategies employed by both susceptible and resistant citrus rootstocks, in parallel with P...
November 10, 2017: Molecular Plant-microbe Interactions: MPMI
https://www.readbyqxmd.com/read/29119107/santamarine-inhibits-nf-%C3%AE%C2%BAb-activation-and-induces-mitochondrial-apoptosis-in-a549-lung-adenocarcinoma-cells-via-oxidative-stress
#4
Xuefeng Wu, Hua Zhu, Jingzhe Yan, Muhammad Khan, Xiuyan Yu
Santamarine (STM), a sesquiterpene lactone component of Magnolia grandiflora and Ambrosia confertiflora, has been shown to possess antimicrobial, antifungal, antibacterial, anti-inflammatory, and anticancer activities. However, no study has yet been conducted to investigate the molecular mechanism of STM-mediated anticancer activity. In the present study, we found that STM inhibits growth and induces apoptosis in A549 lung adenocarcinoma cells through induction of oxidative stress. STM induces oxidative stress by promoting reactive oxygen species (ROS) generation, depleting intracellular glutathione (GSH), and inhibiting thioredoxin reductase (TrxR) activity in a dose-dependent manner...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29104210/a-large-size-chimeric-highly-immunogenic-peptide-presents-multistage-plasmodium-antigens-as-a-vaccine-candidate-system-against-malaria
#5
José Manuel Lozano, Yahson Varela, Yolanda Silva, Karen Ardila, Martha Forero, Laura Guasca, Yuly Guerrero, Adriana Bermudez, Patricia Alba, Magnolia Vanegas, Manuel Elkin Patarroyo
Rational strategies for obtaining malaria vaccine candidates should include not only a proper selection of target antigens for antibody stimulation, but also a versatile molecular design based on ordering the right pieces from the complex pathogen molecular puzzle towards more active and functional immunogens. Classical Plasmodium falciparum antigens regarded as vaccine candidates have been selected as model targets in this study. Among all possibilities we have chosen epitopes of PfCSP, STARP; MSA1 and Pf155/RESA from pre- and erythrocyte stages respectively for designing a large 82-residue chimeric immunogen...
November 1, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29054984/overcoming-resistance-to-cetuximab-with-honokiol-a-small-molecule-polyphenol
#6
Hannah E Pearson, Mari Iida, Rachel A Orbuch, Nellie K McDaniel, Kwangok P Nickel, Randall J Kimple, Jack Arbiser, Deric L Wheeler
Overexpression and activation of the Epidermal Growth Factor Receptor (EGFR) have been linked to poor prognosis in several human cancers. Cetuximab is a monoclonal antibody against EGFR, that is used for the treatment in head and neck squamous cell carcinoma (HNSCC) and metastatic colorectal cancer. Unfortunately, most tumors have intrinsic or acquire resistance to cetuximab during the course of therapy. Honokiol is a natural compound found in the bark and leaves of the Chinese Magnolia tree and is established to have several anti-cancer properties without appreciable toxicity...
October 20, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29049988/magnolia-officinalis-bark-extract-induces-depolarization-of-pacemaker-potentials-through-m2-and-m3-muscarinic-receptors-in-cultured-murine-small-intestine-interstitial-cells-of-cajal
#7
Hyun Jung Kim, Taewon Han, Yun Tai Kim, Insuk So, Byung Joo Kim
BACKGROUND: Magnolia officinalis Rehder and EH Wilson (M. officinalis) are traditional Chinese medicines widely used for gastrointestinal (GI) tract motility disorder in Asian countries. We investigated the effects of an ethanol extract of M. officinalis (MOE) on the pacemaker potentials of cultured interstitial cells of Cajal (ICCs) in vitro and its effects on GI motor functions in vivo. METHODS: We isolated ICCs from small intestines, and the whole-cell patch-clamp configuration was used to record the pacemaker potentials in cultured ICCs in vitro...
October 19, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29023360/honokiol-increases-cd4-t-cell-activation-and-decreases-tnf-but-fails-to-improve-survival-following-sepsis
#8
Nathan J Klingensmith, Ching-Wen Chen, Zhe Liang, Eileen M Burd, Alton B Farris, Jack L Arbiser, Mandy L Ford, Craig M Coopersmith
Honokiol is a biphenolic isolate extracted from the bark of the magnolia tree that has been used in traditional Chinese and Japanese medicine, and has more recently been investigated for its anti-inflammatory and anti-bacterial properties. Honokiol has previously been demonstrated to improve survival in sepsis models that have rapid 100% lethality. The purpose of this study was to determine the impact of Honokiol on the host response in a model of sepsis that more closely approximates human disease. Male and female C57BL/6 mice underwent cecal ligation and puncture (CLP) to induce polymicrobial intraabdominal sepsis...
October 11, 2017: Shock
https://www.readbyqxmd.com/read/29022760/terpenoids-from-the-barks-of-magnolia-maudiae-dunn-figlar
#9
Sui Xianjin, Shi Sha, Muge Qi, Zhengxi Zhang, Yuyao Yang, Haibo Wu, Linfeng Li, Wenshu Wang, Anmin Huang
A new germacrenolide (1) and fourteen known terpenoids (2-15) were isolated from the barks of Magnolia maudiae (Dunn) Figlar (Magnoliaceae). The structure of (7αH,11βH)-2α,8α-dihydroxy-4α,5β-epoxy-germacr-1(10)-en-6α,12-olide (1) was elucidated by physical and spectroscopic data analysis, including 1D, 2D NMR and HR-ESI-MS. Lyratol F (9) was isolated from Magnolia for the first time. The structures of known compounds were established by comparing their spectroscopic data with those in literatures.
October 12, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28993099/recognising-older-frail-patients-near-the-end-of-life-what-next
#10
Magnolia Cardona-Morrell, Ebony Lewis, Sanjay Suman, Cilla Haywood, Marcella Williams, Audrey-Anne Brousseau, Sally Greenaway, Ken Hillman, Elsa Dent
Frailty is a state of vulnerability resulting from cumulative decline in many physiological systems during a lifetime. It is progressive and considered largely irreversible, but its progression may be controlled and can be slowed down and its precursor -pre-frailty- can be treated with multidisciplinary intervention. The aim of this narrative review is to provide an overview of the different ways of measuring frailty in community settings, hospital, emergency, general practice and residential aged care; suggest occupational groups who can assess frailty in various services; discuss the feasibility of comprehensive geriatric assessments; and summarise current evidence of its management guidelines...
October 6, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28984587/diabetes-is-not-associated-with-alzheimer-s-disease-neuropathology
#11
Maria Niures Pimentel Dos Santos Matioli, Claudia Kimie Suemoto, Roberta Diehl Rodriguez, Daniela Souza Farias, Magnólia Moreira da Silva, Renata Elaine Paraizo Leite, Renata Eloah Lucena Ferretti-Rebustini, José Marcelo Farfel, Carlos Augusto Pasqualucci, Wilson Jacob Filho, Zoe Arvanitakis, Michel Satya Naslavsky, Mayana Zatz, Lea Tenenholz Grinberg, Ricardo Nitrini
BACKGROUND: Previous evidence linking diabetes to Alzheimer's disease (AD) neuropathology is mixed and scant data are available from low- and middle-income countries. OBJECTIVE: To investigate the association between diabetes and AD neuropathology in a large autopsy study of older Brazilian adults. METHODS: In this cross-sectional study, diabetes was defined by diagnosis during life or use of antidiabetic medication. A standardized neuropathological examination was performed using immunohistochemistry...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28957463/evolutionary-comparisons-of-the-chloroplast-genome-in-lauraceae-and-insights-into-loss-events-in-the-magnoliids
#12
Yu Song, Wen-Bin Yu, Yunhong Tan, Bing Liu, Xin Yao, Jianjun Jin, Michael Padmanaba, Jun-Bo Yang, Richard T Corlett
Available plastomes of the Lauraceae show similar structure and varied size, but there has been no systematic comparison across the family. In order to understand the variation in plastome size and structure in the Lauraceae and related families of magnoliids, we here compare 47 plastomes, 15 newly sequenced, from 27 representative genera. We reveal that the two shortest plastomes are in the parasitic Lauraceae genus Cassytha, with lengths of 114,623 (C. filiformis) and 114,963 bp (C. capillaris), and that they have lost NADH dehydrogenase (ndh) genes in the large single-copy region and one entire copy of the inverted repeat (IR) region...
September 1, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28946769/magnolol-reduces-renal-ischemia-and-reperfusion-injury-via-inhibition-of-apoptosis
#13
Chia-Yu Tang, Chang-Chi Lai, Po-Hsun Huang, An-Han Yang, Shu-Chiung Chiang, Po-Chao Huang, Kuo-Wei Tseng, Cheng-Hsiung Huang
Magnolol, a constituent of the bark of Magnolia officinalis, has been reported to decrease myocardial stunning and infarct size. In this study, we investigated whether magnolol can reduce renal ischemia and reperfusion (I/R) injury. Renal I/R, induced by a 60-min occlusion of bilateral renal arteries and a 24-h reperfusion, significantly increased blood urea nitrogen (BUN) and creatinine levels, and caused histological damage to the kidneys of rats. Apoptosis, as evaluated by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL) staining and caspase-3 activation, was significantly increased in the kidneys...
2017: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/28943942/honokiol-inhibits-bladder-cancer-cell-invasion-through-repressing-src-3-expression-and-epithelial-mesenchymal-transition
#14
Lan Shen, Fang Zhang, Ruimin Huang, Jun Yan, Bing Shen
Urinary bladder cancer (UBC) is one of the most common urological cancer types. Muscle invasive bladder cancer possesses high propensity for metastasis with poor prognosis. Honokiol is a lignan isolated from Magnolia officinalis with high bioavailability and potent anticancer effects. The results of the present study demonstrated that honokiol significantly inhibited UBC cell migration and invasion in a dose-dependent manner compared with the vehicle-treated control group. In addition, honokiol treatment suppressed epithelial-mesenchymal transition by induction of E-cadherin and repression of N-cadherin...
October 2017: Oncology Letters
https://www.readbyqxmd.com/read/28932090/new-botanical-drug-hl-tablet-reduces-hepatic-fat-as-measured-by-magnetic-resonance-spectroscopy-in-patients-with-nonalcoholic-fatty-liver-disease-a-placebo-controlled-randomized-phase-ii-trial
#15
Jae Yoon Jeong, Joo Hyun Sohn, Yang Hyun Baek, Yong Kyun Cho, Yongsoo Kim, Hyeonjin Kim
AIM: To evaluate the efficacy and safety of HL tablet extracted from magnolia officinalis for treating patients with nonalcoholic fatty liver disease (NAFLD). METHODS: Seventy-four patients with NAFLD diagnosed by ultrasonography were randomly assigned to 3 groups given high dose (400 mg) HL tablet, low dose (133.4 mg) HL tablet and placebo, respectively, daily for 12 wk. The primary endpoint was post-treatment change of hepatic fat content (HFC) measured by magnetic resonance spectroscopy...
August 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28931882/honokiol-protects-against-doxorubicin-cardiotoxicity-via-improving-mitochondrial-function-in-mouse-hearts
#16
Lizhen Huang, Kailiang Zhang, Yingying Guo, Fengyuan Huang, Kevin Yang, Long Chen, Kai Huang, Fengxue Zhang, Qinqiang Long, Qinglin Yang
Honokiol is a key component of a medicinal herb, Magnolia bark. Honokiol possesses potential pharmacological benefits for many disease conditions, especially cancer. Recent studies demonstrate that Honokiol exerts beneficial effects on cardiac hypertrophy and doxorubicin (Dox)-cardiotoxicity via deacetylation of mitochondrial proteins. However, the effects and mechanisms of Honokiol on cardiac mitochondrial respiration remain unclear. In the present study, we investigate the effect of Honokiol on cardiac mitochondrial respiration in mice subjected to Dox treatment...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28925032/susceptibility-of-malassezia-pachydermatis-to-aminoglycosides
#17
Freddy Alejandro Silva, Magnolia Conde-Felipe, Inmaculada Rosario, Otilia Ferrer, Fernando Real, Soraya Déniz, Félix Acosta, Daniel Padilla, Begoña Acosta-Hernández
Previous studies have evaluated the action of gentamicin against Malassezia pachydermatis. The aim of this study was to evaluate in vitro susceptibility of M. pachydermatis to the aminoglycosides- gentamicin, tobramycin, netilmicin and framycetin. The minimum inhibitory concentration (MIC) of gentamicin was determined following methods M27-A3 microdilution and Etest(®) . The Etest(®) was used to determine the minimum inhibitory concentration (MIC) of the tobramycin and netilmicin. The Kirby-Bauer test was used to determine the antibiotic susceptibility to the framycetin...
September 19, 2017: Mycoses
https://www.readbyqxmd.com/read/28919305/magnolol-protects-pancreatic-%C3%AE-cells-against-methylglyoxal-induced-cellular-dysfunction
#18
Kwang Sik Suh, Suk Chon, Woon-Won Jung, Eun Mi Choi
Chronic hyperglycemia aggravates insulin resistance, in part due to increased formation of advanced glycation end-products (AGEs). Methylglyoxal (MG), a major precursor of AGEs, accumulates abnormally in various tissues and organs and participates in oxidative damage. We investigated the insulinotropic benefits of magnolol, a hydroxylated biphenyl compound isolated from Magnolia officinalis, in pancreatic β-cells exposed to MG in vitro. When exposed to cytotoxic levels of MG for 48 h, RIN-m5F β-cells exhibited a significant loss of viability and impaired insulin secretion, whereas pretreatment with magnolol protected against MG-induced cell death and decreased insulin secretion...
November 1, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28874849/inhibitory-effect-of-obovatol-from-magnolia-obovata-on-the-salmonella-type-iii-secretion-system
#19
Won-Sik Choi, Tae Hun Lee, Se Jin Son, Tae Gyu Kim, Byoung-Mog Kwon, Hyeong-U Son, Sung Uk Kim, Sang-Han Lee
In many pathogenic Gram-negative bacteria, such as Salmonella, Escherichia coli, Yersinia and Chlamydia spp., which cause diseases in humans, the type III secretion system (TTSS) is an important virulence factor that translocates effector proteins into the cytosol of host cells. Thus, the TTSS is a good target for antibacterial agents. Here we used a hemolysis assay to search for TTSS inhibitors and found that a compound from Magnolia obovata called obovatol blocks the TTSS of Salmonella. Obovatol showed potent inhibitory activity (IC50=19...
November 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28867711/four-new-lignans-and-il-2-inhibitors-from-magnoliae-flos
#20
Thi Tuyet Mai Nguyen, Hyun-Su Lee, Thi Thu Nguyen, Thi Quynh Mai Ngo, Chang-Duk Jun, Byung Sun Min, Jeong Ah Kim
Four new lignans, a furofuran lignan medioresinol B (10) and three tetrahydrofuran lignans kobusinol C (16), 7'-methoxy magnostellin A (21), and mangnostellin D (23), along with 19 known lignans, were isolated from the flower buds of Magnolia biondii PAMP. The structures of the isolates were elucidated using spectroscopic analysis, mainly one- and two-dimensional NMR, high resolution-MS, and circular dichroism techniques as well as Mosher's esterification method. The anti-allergic effects of the isolated compounds were evaluated by analyzing the inhibition of interleukin-2 (IL-2) expression in Jurkat T-cells...
2017: Chemical & Pharmaceutical Bulletin
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