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https://www.readbyqxmd.com/read/29342107/honokiol-improves-liver-steatosis-in-ovariectomized-mice
#1
Yeon-Hui Jeong, Haeng Jeon Hur, Eun-Joo Jeon, Su-Jin Park, Jin Taek Hwang, Ae Sin Lee, Kyong Won Lee, Mi Jeong Sung
Nonalcoholic fatty liver disease (NAFLD) is the most common liver disease, and is associated with the development of metabolic syndrome. Postmenopausal women with estrogen deficiency are at a higher risk of progression to NAFLD. Estrogen has a protective effect against the progression of the disease. Currently, there are no safe and effective treatments for these liver diseases in postmenopausal women. Honokiol (Ho), a bioactive natural product derived from Magnolia spp, has anti-inflammatory, anti-angiogenic, and anti-oxidative properties...
January 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29324783/sirt3-activator-honokiol-attenuates-%C3%AE-amyloid-by-modulating-amyloidogenic-pathway
#2
Sindhu Ramesh, Manoj Govindarajulu, Tyler Lynd, Gwyneth Briggs, Danielle Adamek, Ellery Jones, Jake Heiner, Mohammed Majrashi, Timothy Moore, Rajesh Amin, Vishnu Suppiramaniam, Muralikrishnan Dhanasekaran
Honokiol (poly-phenolic lignan from Magnolia grandiflora) is a Sirtuin-3 (SIRT3) activator which exhibit antioxidant activity and augment mitochondrial functions in several experimental models. Modern evidence suggests the critical role of SIRT3 in the progression of several metabolic and neurodegenerative diseases. Amyloid beta (Aβ), the precursor to extracellular senile plaques, accumulates in the brains of patients with Alzheimer's disease (AD) and is related to the development of cognitive impairment and neuronal cell death...
2018: PloS One
https://www.readbyqxmd.com/read/29277695/magnolol-protects-ctenopharyngodon-idella-kidney-cells-from-apoptosis-induced-by-grass-carp-reovirus
#3
Xiaohui Chen, Kai Hao, Xiaobo Yu, Aiguo Huang, Bin Zhu, Fei Ling, Gao-Xue Wang
Many natural products from medicinal plants are small molecular weight compounds with enormous structural diversity and show various biological activities. Magnolol is a biphenol compound rich in the stem bark of Magnolia officinalis Rehd et Wils., and is able to suppress viral replication in GCRV-infected grass carp (Ctenopharyngodon idella) kidney (CIK) cells in the previous study. In this study, in vivo studies demonstrated that magnolol was efficient to restrain the replication of GCRV and repair the low level of superoxide dismutase and total antioxidant capacity in serum at the non-toxic concentration in vivo...
December 22, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29231862/conserved-binding-regions-provide-the-clue-for-peptide-based-vaccine-development-a-chemical-perspective
#4
REVIEW
Hernando Curtidor, César Reyes, Adriana Bermúdez, Magnolia Vanegas, Yahson Varela, Manuel E Patarroyo
Synthetic peptides have become invaluable biomedical research and medicinal chemistry tools for studying functional roles, i.e., binding or proteolytic activity, naturally-occurring regions' immunogenicity in proteins and developing therapeutic agents and vaccines. Synthetic peptides can mimic protein sites; their structure and function can be easily modulated by specific amino acid replacement. They have major advantages, i.e., they are cheap, easily-produced and chemically stable, lack infectious and secondary adverse reactions and can induce immune responses via T- and B-cell epitopes...
December 12, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29207060/honokiol-induces-autophagy-and-apoptosis-of-osteosarcoma-through-pi3k-akt-mtor-signaling-pathway
#5
Zhiquan Li, Hui Dong, Mo Li, Yaoping Wu, Yanwu Liu, Yinan Zhao, Xiaochao Chen, Minliang Ma
Honokiol is the main active constituent of Magnolia officinalis. With effective and long‑term pharmacological functions of being antibacterial, anti‑oxidative, anti‑inflammatory, antitumor, anti‑spasmic, anti‑anxiety and anti‑viral, Honokiol is clinically used in the treatment of acute enteritis and chronic gastritis. The aim of the present study was to observe the possible anti‑effects of honokiol on autophagy and apoptosis of osteosarcoma, and to investigate the role of the PI3K/Akt/mTOR signaling pathway in its anticancer effects...
November 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29182182/addition-of-a-polyhistidine-tag-alters-the-regioselectivity-of-carbonyl-reductase-s1-from-candida-magnoliae
#6
Julian Haas, Matthias Häckh, Viktor Justus, Michael Müller, Steffen Lüdeke
Studying enzymatic reductions of substrates with more than a single keto group is challenging, as the carbonyl reduction can create a vast array of regio- and stereoisomers. If used as reference compounds, regio- and stereopure hydroxy ketides could facilitate the characterization of reductases with unclear regio- and stereoselectivity. We have combined nonenzymatic and enzymatic reduction and oxidation steps to obtain all four regio- and stereoisomers of tert-butyl hydroxyoxohexanoates in high optical purity (enantiomeric ratio (er) of 99 : 1 for the δ-hydroxy-β-keto isomers; er of >97 : 3 for the β-hydroxy-δ-keto isomers)...
November 28, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29181570/improved-production-of-dibenzocyclooctadiene-lignans-in-the-elicited-microshoot-cultures-of-schisandra-chinensis-chinese-magnolia-vine
#7
Agnieszka Szopa, Adam Kokotkiewicz, Agata Król, Maria Luczkiewicz, Halina Ekiert
Dibenzocyclooctadiene lignans are a specific group of secondary metabolites that occur solely in Schisandra chinensis. The aim of the presented work was to boost the accumulation of lignans in the agitated microshoot cultures of S. chinensis, using different elicitation schemes. The experiments included testing of various concentrations and supplementation times of cadmium chloride (CdCl2), chitosan (Ch), yeast extract (YeE), methyl jasmonate (MeJa), and permeabilizing agent-dimethylsulfoxide (DMSO). After 30 days, the microshoots were harvested and evaluated for growth parameters and lignan content by LC-DAD method...
November 27, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29177805/inhibitory-effects-of-honokiol-on-the-voltage-gated-potassium-channels-in-freshly-isolated-mouse-dorsal-root-ganglion-neurons
#8
Anqi Sheng, Yan Zhang, Guang Li, Guangqin Zhang
Voltage-gated potassium (KV) currents, subdivided into rapidly inactivating A-type currents (I A) and slowly inactivating delayed rectifier currents (I K), play a fundamental role in modulating pain by controlling neuronal excitability. The effects of Honokiol (Hon), a natural biphenolic compound derived from Magnolia officinalis, on KV currents were investigated in freshly isolated mouse dorsal root ganglion neurons using the whole-cell patch clamp technique. Results showed that Hon inhibited I A and I K in concentration-dependent manner...
November 24, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/29152090/gynostemma-pentaphyllum-saponins-attenuate-inflammation-in-vitro-and-in-vivo-by-inhibition-of-nf-%C3%AE%C2%BAb-and-stat3-signaling
#9
Wing-Yan Wong, Magnolia Muk-Lan Lee, Brandon Dow Chan, Victor Wan-San Ma, Wenchun Zhang, Timothy Tak-Chun Yip, Wing-Tak Wong, William Chi-Shing Tai
Recent advances in the development of anti-inflammatory agents have improved their therapeutic outcome in inflammatory bowel disease (IBD), however, the presence of side effects and limited effectiveness hinder their widespread use. Therefore, novel compounds with strong anti-inflammatory efficacy are still required. In this study, we investigated the anti-inflammatory effect and potential mechanisms of Gynostemma pentaphyllum (Thunb.) Makino saponins (GpS), a major component of the herbal medicine widely used in Asian countries...
October 20, 2017: Oncotarget
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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