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https://www.readbyqxmd.com/read/28822163/-mechanism-of-treatment-effect-of-huanglian-huangqin-herb-pairs-on-cerebral-ischemia-rats-based-on-metabolomic-approach
#1
Hui-Ting Cao, Hua-Xu Zhu, Qi-Chun Zhang, Li-Wei Guo
The metabolic effect of Huanglian-Huangqin herb pairs on cerebral ischemia rats was studied by using metabolomic method. The rat model of ischemia reperfusion injury induced by introduction of transient middle cerebral artery occlusion (MCAO) followed by reperfusion. Ultra high performance liquid chromatography-series four pole time of flight mass spectrometry method(UPLC-Q-TOF/MS), Markerlynx software, and principal component analysis and partial least-squares discriminant analysis were used to analyze the different endogenous metabolites among the urine samples of sham rats, cerebral ischemia model rats, Huanglian groups (HL), Huangqin groups (HQ) and Huanglian-Huangqin herb pairs groups (LQ) was achieved, combined with accurate information about the endogenous metabolites level and secondary fragment ions, retrieval and identification of possible biological markers, metabolic pathway which build in MetPA database...
June 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28819994/the-mechanistic-antitumor-study-of-myricanol-5-fluorobenzyloxy-ether-in-human-leukemic-cell-hl-60
#2
Guan-Hai Dai, Chen-Jie Fan, Ze-Ming Ren, Xuan Chen, Ye-Ling Tong, Zhen-Hua Li, Xiao-Jing Nie, Ke-Qun Chai
AIM: The aim of the study was to explore the growth inhibitory effect of myricanol 5-fluorobenzyloxy ether (5FEM) and the underlying mechanism in human leukemic cells HL-60. MATERIALS & METHODS: 5FEM was obtained by chemical modification of myricanol with fluorobenzyloxy ether at the OH(5) position. The cytotoxicity, cell apoptosis, cell cycle and the expression of key apoptosis-related genes in HL-60 were evaluated. RESULTS & CONCLUSION: 5FEM can significantly inhibited growth of HL-60 cells, increased the G2/M population and upregulated the expression of Bax, Fas, FasL, caspase-9 and p21 and downregulated that of Bcl-2 and survivin...
August 18, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28819360/hexavalent-chromium-removal-from-model-water-and-car-shock-absorber-factory-effluent-by-nanofiltration-and-reverse-osmosis-membrane
#3
Amine Mnif, Imen Bejaoui, Meral Mouelhi, Béchir Hamrouni
Nanofiltration and reverse osmosis are investigated as a possible alternative to the conventional methods of Cr(VI) removal from model water and industrial effluent. The influences of feed concentration, water recovery, pH, and the coexisting anions were studied. The results have shown that retention rates of hexavalent chromium can reach 99.7% using nanofiltration membrane (NF-HL) and vary from 85 to 99.9% using reverse osmosis membrane (RO-SG) depending upon the composition of the solution and operating conditions...
2017: International Journal of Analytical Chemistry
https://www.readbyqxmd.com/read/28817550/role-of-microrna-93-i-in-pathogenesis-of-left-ventricular-remodeling-via-targeting-cyclin-d1
#4
Jingjing Zhang, Li Qin, Ling Han, Ying Zhao, Hongfeng Jing, Wei Song, Haili Shi
BACKGROUND The objective of this study was to identify the pathway responsible for ventricular remodeling. MATERIAL AND METHODS We collected remodeling myocardium tissue (n=18) and control myocardium tissue (n=22), and detected the expression of 4 miRNAs in these 2 groups using real-time PCR. We then searched the miRNA database online to find the candidate genes of miR-93. Real-time PCR and Western blot analysis were used to confirm the regulatory relationship. RESULTS We found that only miR-93 was decreased in remodeling myocardium tissue, and validated CCND1 to be the direct target gene of miR-93, with the "seed sequence" located within the 3'-UTR of the target gene via luciferase reporter assay system...
August 17, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28816687/hearing-and-otoacoustic-emissions-outcome-of-stapedotomy-does-the-prosthesis-diameter-matter
#5
Nabil Faranesh, Ebrahim Magamseh, Suliman Zaaroura, Reem Zeidan, Avi Shupak
OBJECTIVE: To compare the hearing and otoacoustic emissions (OAE) outcome of stapedotomy employing 0.4 and 0.6 mm diameter prostheses. MATERIALS AND METHODS: In total, 18 patients with otosclerosis participated in a prospective, double-armed, randomized cohort study. All the patients underwent small fenestra drill stapedotomy employing the Causse fluroplastic large loop piston prostheses. The patients were randomly assigned to groups of 0.4 mm (n=9) and 0.6 mm (n=9) diameter prostheses...
August 2017: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28816445/tracking-the-progress-and-mechanism-study-of-a-solvothermal-in-situ-domino-n-alkylation-reaction-of-triethylamine-and-ammonia-assisted-by-ferrous-sulfate
#6
Jin-Ping Zhong, Bin Liu, Tao Yang, Yue-Jin Liu, Zhong-Hong Zhu, Bing-Feng Shi, Mohamedally Kurmoo, Ming-Hua Zeng
Atom economic in situ domino N-alkylation reactions of triethylamine/ammonia with 2-(hydroxymethyl)quinolin-8-ol (HL-OH) assisted by FeSO4·7H2O were realized under mild solvothermal conditions at 120 °C in acetonitrile. The resulting tripodal 2,2',2″-[nitrilotris(methylene)]tris(quinolin-8-ol) (H3L3-N) forms a linear trimer [Fe3(L3-N)2] (1). Electrospray ionization mass spectrometry of the reaction solution provides evidence for the intermediates of three steps, while crystallography and X-ray photoelectron spectroscopy characterize the trimer...
August 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28816170/role-of-consolidative-radiation-therapy-after-autologous-hematopoietic-cell-transplantation-for-the-treatment-of-relapsed-or-refractory-hodgkin-lymphoma
#7
Christopher Wilke, Qing Cao, Kathryn E Dusenbery, Veronika Bachanova, Aleksandr Lazaryan, Chung K Lee, Jianling Yuan
PURPOSE: To evaluate the role of the addition of consolidative radiation therapy after high-dose chemotherapy and autologous hematopoietic cell transplantation (AHCT) for relapsed or refractory Hodgkin lymphoma (HL). METHODS AND MATERIALS: Medical records were reviewed from a total of 80 consecutive patients who underwent high-dose chemotherapy with AHCT treated under a single protocol at University of Minnesota between November 2005 and January 2014. Of these, 32 patients received radiation therapy after AHCT as planned consolidation...
September 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28814788/synthesis-of-saccharumoside-b-analogue-with-potential-of-antiproliferative-and-pro-apoptotic-activities
#8
Srinuvasarao Rayavarapu, Nagendra Sastry Yarla, Sunanda Kumari Kadiri, Anupam Bishayee, Siddaiah Vidavalur, Ramu Tadikonda, Mahaboob Basha, Vijaya Rao Pidugu, Kaladhar S V G K Dowluru, Dhananjaya Bhadrapura Lakappa, Mohammad A Kamal, Ghulam Md Ashraf, Vadim V Tarasov, Vladimir N Chubarev, Sergey G Klochkov, George E Barreto, Sergey O Bachurin, Gjumrakch Aliev
A new series of phenolic glycoside esters, saccharumoside-B and its analogs (9b-9n, 10) have been synthesized by the Koenigs-Knorr reaction. Antiproliferative activities of the compounds (9b-9n, 10) were evaluated on various cancer cell lines including, MCF-7 breast, HL-60 leukemia, MIA PaCa-2 pancreatic, DU145 prostate, HeLa cervical and CaCo-2 colon, as well as normal human MCF10A mammary epithelial and human peripheral blood mononuclear cells (PBMC) by MTT assay. Compounds (9b-9n, 10) exhibited considerable antiproliferative effects against cancer cells with IC50 range of 4...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28813102/terpene-esters-from-natural-products-synthesis-and-evaluation-of-cytotoxic-activity
#9
Mauricio M Victor, Jorge M David, Maria C K Sakukuma, Letícia V Costa-Lotufo, Andrea F Moura, Ana J Araújo
Natural steroids and triterpenes such as b-sitosterol, stigmasterol, lupeol, ursolic and betulinic acids were transformed into its hexanoic and oleic esters, to evaluate the influence of chemical modification towards the cytotoxic activities against tumor cells. The derivatives were evaluated against five tumor cell lines [OVCAR-8 (ovarian carcinoma); SF-295 (glioblastoma); HCT-116 (colon adenocarcinoma); HL-60 (leukemia); and PC-3 (prostate carcinoma)] and the results showed only betulinic acid hexyl ester exhibits cytotoxic potential activity...
August 14, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28812369/two-new-cassane-diterpene-lactams-from-the-fruits-of-caesalpinia-mimosoides-lam
#10
Dewen Bi, Guanghui Xia, Yuanping Li, Xuesong Liang, Lanjun Zhang, Liqin Wang
Two new cassane ditepenoid lactams, caesmimotam A (1) and B (2), along with eight known compounds (3-10) were isolated from the fruits of Caesalpinia mimosoides Lam. Their structures were identified by 1D and 2D NMR spectral data. Compounds 1 and 2 were evaluated for their cytotoxicity on HL-60, SMMC-7721, A-549, MCF-7 and SW-480 human cancer cell lines, but they were inactive.
August 16, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28809505/relay-catalysis-manganese-iii-phosphate-catalyzed-asymmetric-addition-of-%C3%AE-dicarbonyls-to-ortho-quinone-methides-generated-by-catalytic-aerobic-oxidation
#11
Konrad Gebauer, Franziska Reuß, Matthias Spanka, Christoph Schneider
The combination of an in situ formed MnL3 complex (HL = Hacac or R(C═O)CH2CO2R) and a chiral phosphoric acid HX* allows for a fully catalytic, asymmetric synthesis of 4H-chromenes starting from 2-alkyl-substituted phenols. The aerobic oxidation toward a transient ortho-quinone methide was efficiently catalyzed by a manganese(III) species MnL3 while the ensuing Michael addition of β-dicarbonyl compounds proved to be catalyzed by a chiral manganese phosphate MnL2X*.
August 15, 2017: Organic Letters
https://www.readbyqxmd.com/read/28808441/an-improved-extrapolation-scheme-for-truncated-ct-data-using-2d-fourier-based-helgason-ludwig-consistency-conditions
#12
Yan Xia, Martin Berger, Sebastian Bauer, Shiyang Hu, Andre Aichert, Andreas Maier
We improve data extrapolation for truncated computed tomography (CT) projections by using Helgason-Ludwig (HL) consistency conditions that mathematically describe the overlap of information between projections. First, we theoretically derive a 2D Fourier representation of the HL consistency conditions from their original formulation (projection moment theorem), for both parallel-beam and fan-beam imaging geometry. The derivation result indicates that there is a zero energy region forming a double-wedge shape in 2D Fourier domain...
2017: International Journal of Biomedical Imaging
https://www.readbyqxmd.com/read/28807899/pitx1-directly-modulates-the-core-limb-development-program-to-implement-hindlimb-identity
#13
Stephen Nemec, Maëva Luxey, Deepak Jain, Aurélie Huang Sung, Tomi Pastinen, Jacques Drouin
Forelimbs (FL) and hindlimbs (HL) develop complex musculoskeletal structures that rely on the deployment of a conserved developmental program. Pitx1, a transcription factor gene with expression restricted to HL and absent from FL, plays an important role in generating HL features. The genomic mechanisms by which Pitx1 effects HL identity remain poorly understood, however. Here, we use expression profiling and analysis of direct Pitx1 targets to characterize the HL- and FL-restricted genetic programs and situate the Pitx1-dependent gene network within the context of limb-specific gene regulation...
August 14, 2017: Development
https://www.readbyqxmd.com/read/28807695/doxorubicin-enhance-oxysterol-levels-resulting-in-a-lxr-mediated-upregulation-of-cardiac-cholesterol-transporters
#14
Judith V Monzel, Thomas Budde, Henriette E Meyer Zu Schwabedissen, Matthias Schwebe, Sandra Bien-Möller, Dieter Lütjohann, Heyo K Kroemer, Gabriele Jedlitschky, Markus Grube
The anthracycline-mediated cardiotoxicity is still not completely understood. To examine the impact of cholesterol metabolism and transport in this context, cholesterol and oxysterol levels as well as the expression of the cholesterol transporters ABCA1 and ABCG1 were analyzed in doxorubicin-treated HL-1 murine cardiomyocytes as well as in mouse model for acute doxorubicin-induced cardiotoxicity. Doxorubicin-treated HL-1 cells exhibited enhanced cholesterol (153±20% of control), oxysterol (24S-hydroxycholesterol: 206±29% of control) and cholesterol precursor levels (lathosterol: 122±12% of control; desmosterol: 188±10% of control) indicating enhanced cholesterol synthesis...
August 11, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28806770/increasing-creatine-kinase-activity-protects-against-hypoxia-reoxygenation-injury-but-not-against-anthracycline-toxicity-in-vitro
#15
Sevasti Zervou, Hannah J Whittington, Philip J Ostrowski, Fang Cao, Jack Tyler, Hannah A Lake, Stefan Neubauer, Craig A Lygate
The creatine kinase (CK) phosphagen system is fundamental to cellular energy homeostasis. Cardiomyocytes express three CK isoforms, namely the mitochondrial sarcomeric CKMT2 and the cytoplasmic CKM and CKB. We hypothesized that augmenting CK in vitro would preserve cell viability and function and sought to determine efficacy of the various isoforms. The open reading frame of each isoform was cloned into pcDNA3.1, followed by transfection and stable selection in human embryonic kidney cells (HEK293). CKMT2- CKM- and CKB-HEK293 cells had increased protein and total CK activity compared to non-transfected cells...
2017: PloS One
https://www.readbyqxmd.com/read/28805955/structural-modification-of-stilbenoids-from-acanthopanax-leucorrhizus-and-their-cytotoxic-activity
#16
Hu Hao-Bin, Liang Hai-Peng, Li Hai-Ming, Yuan Ru-Nan, Sun Jiao, Wu Yun, Zhang La-La, Han Ming-Hu
A new cis-stilbenoid, 1,9-dihydroxy-10-methoxy-6H-dibenzo [b, f] oxocin-6-one (2) was isolated from the EtOAc extract of the stem barks of Acanthopanax leucorrhizus, along with three known stilbenoids, 9-hydroxy-10- methoxy-6H-dibenzo [b, f] oxocin-6-one (1), 5-O-methyl-(E)-resveratrol 3-O-β-D-glucopyranoside (3) and (E)- resveratrol 3-O-β-D-xylopyranoside (4). Two derivatives (2a and 2b) were synthesized by the structural modification of compound 2, which exhibited certain cytotoxic activities against HT-29 and Hela cell lines in vitro...
August 14, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28805662/clinical-and-immunological-responses-after-cd30-specific-chimeric-antigen-receptor-redirected-lymphocytes
#17
Carlos A Ramos, Brandon Ballard, Huimin Zhang, Olga Dakhova, Adrian P Gee, Zhuyong Mei, Mrinalini Bilgi, Meng-Fen Wu, Hao Liu, Bambi Grilley, Catherine M Bollard, Bill H Chang, Cliona M Rooney, Malcolm K Brenner, Helen E Heslop, Gianpietro Dotti, Barbara Savoldo
BACKGROUND: Targeting CD30 with monoclonal antibodies in Hodgkin lymphoma (HL) and anaplastic large cell lymphoma (ALCL) has had profound clinical success. However, adverse events, mainly mediated by the toxin component of the conjugated antibodies, cause treatment discontinuation in many patients. Targeting CD30 with T cells expressing a CD30-specific chimeric antigen receptor (CAR) may reduce the side effects and augment antitumor activity. METHODS: We conducted a phase I dose escalation study in which 9 patients with relapsed/refractory HL or ALCL were infused with autologous T cells that were gene-modified with a retroviral vector to express the CD30-specific CAR (CD30...
August 14, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28800559/assessment-of-health-literacy-among-outpatient-clinics-attendees-at-ain-shams-university-hospitals-egypt-a-cross-sectional-study
#18
R Almaleh, Y Helmy, E Farhat, H Hasan, A Abdelhafez
OBJECTIVES: The aim of conducting this study is to measure health literacy (HL) and to investigate the factors associated with inadequate HL in a sample of outpatient clinics attendees (i.e. patients and companions) at Ain Shams University (ASU) Hospitals. STUDY DESIGN: It is a cross-sectional study. METHODS: The study was conducted on 805 attendees of the outpatient clinics at El-Demerdash University Hospital of ASU Hospitals. The Arabic versions of the Swedish Functional Health Literacy Scale and the European Health Literacy Survey Questionnaire-short version-were used to assess HL...
August 8, 2017: Public Health
https://www.readbyqxmd.com/read/28800422/cytotoxic-lanostane-triterpenoids-from-the-fruiting-bodies-of-piptoporus-betulinus
#19
Zeynep Tohtahon, Jingjing Xue, Jianxin Han, Yushuang Liu, Huiming Hua, Tao Yuan
Chemical investigation of a bioactive methanolic extract of the fruiting bodies of Piptoporus betulinus led to the isolation of five previously undescribed lanostane triterpenoids named piptolinic acids A-E, as well as five known lanostane triterpenoids. Their structures were elucidated on the basis of 1D and 2D NMR spectroscopic and HRESIMS analysis. Piptolinic acid A with an unusual moiety (3-hydroxy-4-methoxycarbonyl-3-methylbutyryloxy) at C-3 exhibited comparable cytotoxic activity against human promyelocytic leukemia cell line HL-60 (IC50 = 1...
August 8, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28800400/mechanism-of-tfam-mediated-cardiomyocyte-protection
#20
George H Kunkel, Pankaj Chaturvedi, Nicholas Theilen, Rohit Nair, Suresh C Tyagi
Although mitochondrial transcription factor A (TFAM) is a protective component of mitochondrial DNA and a regulator of calcium and reactive oxygen species (ROS) production, the mechanism remains unclear. In heart failure (HF), TFAM is significantly decreased and cardiomyocyte instability ensues. TFAM inhibits Nuclear Factor of Activated T cells (NFAT), which reduces ROS production; additionally, TFAM transcriptionally activates SERCA2a to decrease free calcium. Therefore, decreasing TFAM vastly increases protease expression and hypertrophic factors, leading to cardiomyocyte functional decline...
August 11, 2017: Canadian Journal of Physiology and Pharmacology
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