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https://www.readbyqxmd.com/read/28821401/chemical-composition-of-mentha-pulegium-and-rosmarinus-officinalis-essential-oils-and-their-antileishmanial-antibacterial-and-antioxidant-activities
#1
Abdelhakim Bouyahya, Abdeslam Et-Touys, Youssef Bakri, Talbaoui Ahmed, Hajiba Fellah, Jamal Abrini, Nadia Dakka
The aim of the study was the determination of the chemical composition of Mentha pulegium L. and Rosmarinus officinalis L. essential oils and the evaluation of their antileishmanial, antibacterial and antioxidant activities. Essential oils (EOs) were isolated using steam distillation and the chemical composition was determined using GC-MS analysis. The antibacterial activity was tested against ten pathogenic strains using the diffusion method, the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC) by microtitration assay...
August 15, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28816181/antimicrobial-and-antiproliferative-activity-of-bauhinia-forficata-link-and-cnidoscolus-quercifolius-extracts-commonly-used-in-folk-medicine
#2
Erika P Alves, Rennaly de F Lima, Carolina M de Almeida, Irlan A Freires, Pedro L Rosalen, Ana Ltg Ruiz, Ana F Granville-Garcia, Gustavo P Godoy, Jozinete V Pereira, Edja Mm de Brito Costa
BACKGROUND: Bauhinia forficata and Cnidoscolus quercifolius plants are commonly used in folk medicine. However, few studies have investigated their therapeutic potential. AIM: Herein, we evaluated the antimicrobial activity of B. forficata and C. quercifolius extracts against microorganisms of clinical relevance and their antiproliferative potential against tumor cells. MATERIALS AND METHODS: The following tests were performed: Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC)/minimum fungicidal concentration (MFC), inhibition of biofilm adhesion, and effects on cell morphology...
August 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28813151/the-medicinal-and-biological-chemistry-mbc-library-an-efficient-source-on-new-hits
#3
Víctor Sebastián Pérez, Carlos Roca, Mahendra Awale, Jean-Louis Reymond, Ana Martínez, Carmen Gil, Nuria E Campillo
Identification of new hits is one of the biggest challenges in drug discovery. Creating a library of well-characterized drug-like compounds is a key step in this process. Our group has developed an in-house chemical library called Medicinal and Biological Chemistry (MBC) library. This collection has been successfully used to start several medicinal chemistry programs and developed in an accumulation of more than thirty years of experience in drug design and discovery of new drugs for unmet diseases. It contains over 1,000 compounds, mainly heterocyclic scaffolds...
August 16, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28813014/antibacterial-properties-of-nonwoven-wound-dressings-coated-with-manuka-honey-or-methylglyoxal
#4
Sophie E L Bulman, Giuseppe Tronci, Parikshit Goswami, Chris Carr, Stephen J Russell
Manuka honey (MH) is used as an antibacterial agent in bioactive wound dressings via direct impregnation onto a suitable substrate. MH provides unique antibacterial activity when compared with conventional honeys, owing partly to one of its constituents, methylglyoxal (MGO). Aiming to investigate an antibiotic-free antimicrobial strategy, we studied the antibacterial activity of both MH and MGO (at equivalent MGO concentrations) when applied as a physical coating to a nonwoven fabric wound dressing. When physically coated on to a cellulosic hydroentangled nonwoven fabric, it was found that concentrations of 0...
August 16, 2017: Materials
https://www.readbyqxmd.com/read/28810193/kinetics-and-mechanism-of-antibacterial-activity-and-cytotoxicity-of-ag-rgo-nanocomposite
#5
Marjan Moghayedi, Elaheh K Goharshadi, Kiarash Ghazvini, Hossein Ahmadzadeh, Laleh Ranjbaran, Raheleh Masoudi, Ralf Ludwig
Nowadays, nanomaterials with remarkable antibacterial activity and low cytotoxicity attract much interest in research. By considering the antibacterial activity of Ag and graphene oxide (GO), the Ag-RGO nanocomposite was prepared by a one-pot and facile technique and it was used to evaluate its antibacterial activity and cytotoxicity against Escherichia coli and glioblastoma cancer cells (U87MG), respectively. The antibacterial activity was studied by micro-dilution and colony counting methods to investigate cell viability...
August 4, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28808376/isolation-of-abscisic-acid-from-korean-acacia-honey-with-anti-helicobacter-pylori-activity
#6
SeGun Kim, InPyo Hong, SoonOk Woo, HyeRi Jang, SokCheon Pak, SangMi Han
BACKGROUND: Helicobacter pylori (H. pylori) is linked to the development of the majority of peptic ulcers and some types of gastric cancers, and its antibiotic resistance is currently found worldwide. OBJECTIVE: This study is aimed at evaluating the anti-H. pylori activity of Korean acacia honey and isolating the related active components using organic solvents. MATERIAL AND METHODS: The crude acacia honey was extracted with n-hexane, dichloromethane, ethyl acetate (EtOAc), and n-butanol...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28808232/analysis-of-the-atr-chk1-and-atm-chk2-pathways-in-male-breast-cancer-revealed-the-prognostic-significance-of-atr-expression
#7
Anna Di Benedetto, Cristiana Ercolani, Marcella Mottolese, Francesca Sperati, Laura Pizzuti, Patrizia Vici, Irene Terrenato, Abeer M Shaaban, Matthew P Humphries, Luigi Di Lauro, Maddalena Barba, Ilio Vitale, Gennaro Ciliberto, Valerie Speirs, Ruggero De Maria, Marcello Maugeri-Saccà
The ATR-Chk1 and ATM-Chk2 pathways are central in DNA damage repair (DDR) and their over-activation may confer aggressive molecular features, being an adaptive response to endogenous DNA damage and oncogene-induced replication stress. Herein we investigated the ATR-Chk1 and ATM-Chk2 signalings in male breast cancer (MBC). The expression of DDR kinases (pATR, pATM, pChk1, pChk2, and pWee1) and DNA damage markers (pRPA32 and γ-H2AX) was evaluated by immunohistochemistry in 289 MBC samples to assess their association...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28805107/effects-of-high-frequency-repetitive-transcranial-magnetic-stimulation-on-reducing-hemiplegic-shoulder-pain-in-patients-with-chronic-stoke-a-randomized-controlled-trial
#8
Gyu-Sik Choi, Min Cheol Chang
OBJECTIVE: To examine whether high-frequency (10 Hz) repetitive transcranial magnetic stimulation (rTMS), applied over the primary motor cortex of the affected hemisphere, could be used to manage hemiplegic shoulder pain (HSP). METHODS: Twenty-four chronic stroke patients with chronic HSP, randomly assigned into the rTMS group (10 sessions of high-frequency stimulation) or the sham group (sham stimulation), was performed. The Numeric Rating Scale (NRS) was used to evaluate the intensity of pain at pre-treatment, and at one day, and one, two, and four weeks after treatment...
August 12, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28798274/disparities-of-trastuzumab-use-in-resource-limited-or-resource-abundant-regions-and-its-survival-benefit-on-her2-positive-breast-cancer-a-real-world-study-from-china
#9
Jianbin Li, Shusen Wang, Yongsheng Wang, Xiaojia Wang, Haibo Wang, Jifeng Feng, Qingyuan Zhang, Tao Sun, Quchang Ouyang, Yongmei Yin, Yinhua Liu, Cuizhi Geng, Min Yan, Zefei Jiang
BACKGROUND: Trastuzumab is a key component of therapy for human epidermal growth receptor 2 (HER2) positive breast cancer. Because real-world data are lacking, the present research was conducted to evaluate the the actual use of and the effectiveness of trastuzumab in the real world in China. METHODS: Inpatients with HER2 positive invasive breast cancer from 13 hospitals in Eastern China (2010-2015, n = 1,139) were included in this study. We aimed to assess the actual use of trastuzumab and to evaluate potential efficacy from trastuzumab in real-world research...
August 10, 2017: Oncologist
https://www.readbyqxmd.com/read/28790261/-third-and-fourth-line-chemotherapies-including-paclitaxel-and-bevacizumab-for-metastatic-breast-cancer
#10
Marika Sakamoto, Yoshinori Nio, Shiro Imai, Kayo Uesugi, Mikako Tamaoki, Masashi Tamaoki
The present study was designed to estimate the clinical efficacy of bevacizumab(BV)combined with paclitaxel(PTX)(BVPTX) as third- and fourth-line therapies in 31 patients with metastatic breast cancer(MBC). Most patients were previously treated with docetaxel and/or epirubicin. Patients were intravenously treated with BV at 5-10mg/kg and PTX at 3-5mg/kg at 2-3week intervals, and when the effect of BV-PTX was low, other chemotherapeutic agents(CTAs)and/or trastuzumab (Tr)were additionally administered. Twelve MBC patients were treated with BV-PTX alone and 19 MBC patients were treat- ed with other CTAs and/or Tr in addition to BV-PTX...
July 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28781060/antibacterial-activity-of-exogenous-glutathione-and-its-synergism-on-antibiotics-sensitize-carbapenem-associated-multidrug-resistant-clinical-isolates-of-acinetobacter-baumannii
#11
Roaa Alharbe, Ayidh Almansour, Dong H Kwon
A major clinical impact of A. baumannii is hospital-acquired infections including ventilator-associated pneumonia. The treatment of this pathogen is often difficult due to its innate and acquired resistance to almost all commercially available antibiotics. Infections with carbapenem-associated multidrug resistant A. baumannii is the most problematic. Glutathione is a tripeptide thiol-antioxidant and antibacterial activity of exogenous glutathione was reported in some bacteria. However, clinical relevance and molecular details of the antibacterial activity of glutathione are currently unclear...
July 29, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28781022/determinants-of-last-line-treatment-in-metastatic-breast-cancer
#12
Marika Cinausero, Lorenzo Gerratana, Elisa De Carlo, Donatella Iacono, Marta Bonotto, Valentina Fanotto, Vanessa Buoro, Debora Basile, Maria Grazia Vitale, Karim Rihawi, Gianpiero Fasola, Fabio Puglisi
BACKGROUND: In metastatic breast cancer (MBC) patients, the identification of factors helping clinicians in the choice between active therapy versus best supportive care is needed clinically. The aim of the present study was to identify the clinicopathologic factors that could improve the prognostic valuation of MBC patients and clinical decision-making at the end of life. PATIENTS AND METHODS: The present study analyzed data from a retrospective series of 522 MBC patients treated at the oncology department (University Hospital of Udine) from January 2004 to June 2014...
July 14, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28779904/ixabepilone-and-carboplatin-for-hormone-receptor-positive-her2-neu-negative-and-triple-negative-metastatic-breast-cancer
#13
Cynthia Osborne, Jagathi D Challagalla, Charles F Eisenbeis, Frankie Ann Holmes, Marcus A Neubauer, Nicholas W Koutrelakos, Carlos A Taboada, Sasha J Vukelja, Sharon T Wilks, Mary Ann Allison, Praveen Reddy, Scot Sedlacek, Yunfei Wang, Lina Asmar, Joyce O'Shaughnessy
BACKGROUND: Hormonal therapies and single-agent sequential chemotherapeutic regimens are the standards of care for HER2(-) metastatic breast cancer (MBC). However, treating patients with hormone-refractory and triple negative (TN) MBC remains challenging. We report the results of combined ixabepilone and carboplatin in a single-arm phase II trial. PATIENTS AND METHODS: In the present prospective analysis of hormone receptor-positive (HR(+))/HER2(-) and TN MBC cohorts, patients could have received 0 to 2 chemotherapy regimens for MBC before enrollment...
July 10, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28778025/comparison-of-esr1-mutations-in-tumor-tissue-and-matched-plasma-samples-from-metastatic-breast-cancer-patients
#14
Takashi Takeshita, Yutaka Yamamoto, Mutsuko Yamamoto-Ibusuki, Mai Tomiguchi, Aiko Sueta, Keiichi Murakami, Yoko Omoto, Hirotaka Iwase
BACKGROUND: ESR1 mutation in circulating cell-free DNA (cfDNA) is emerging as a noninvasive biomarker of acquired resistance to endocrine therapy, but there is a paucity of data comparing the status of ESR1 gene in cfDNA with that in its corresponding tumor tissue. The objective of this study is to validate the degree of concordance of ESR1 mutations between plasma and tumor tissue. METHODS: ESR1 ligand-binding domain mutations Y537S, Y537N, Y537C, and D538G were analyzed using droplet digital PCR in 35 patients with metastatic breast cancer (MBC) (35 tumor tissue samples and 67 plasma samples)...
July 31, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28777489/refinement-of-humoral-immune-monitoring-in-kidney-transplantation-the-role-of-hidden-alloreactive-memory-b-cells
#15
REVIEW
Sergi Luque, Marc Lúcia, Oriol Bestard
The advent of novel sensitive assays assessing circulating anti-HLA antibodies has allowed recognizing humoral alloimmunity as the main immune-mediated mechanism responsible of allograft rejection and graft loss in kidney transplantation. However, current immune-monitoring techniques, exclusively focusing on circulating anti-HLA antibodies, may underestimate the magnitude of humoral immune response as they exclude the memory B-cell (mBC) pool. Different biological compartments are involved in the intricate mechanisms triggering humoral alloimmune responses even in absence of detectable circulating alloantbodies...
August 4, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28773114/toxicity-of-nine-doped-rare-earth-metal-oxides-and-respective-individual-metals-to-aquatic-microorganisms-vibrio-fischeri-and-tetrahymena-thermophila
#16
Imbi Kurvet, Katre Juganson, Heiki Vija, Mariliis Sihtmäe, Irina Blinova, Guttorm Syvertsen-Wiig, Anne Kahru
Despite the increasing use of rare earth elements (REEs) and oxides (REOs) in various technologies, the information on their ecotoxicological hazard is scarce. Here, the effects of La(3+), Ce(3+), Pr(3+), Nd(3+), Gd(3+), CeO₂, and eight doped REOs to marine bacteria Vibrio fischeri and freshwater protozoa Tetrahymena thermophila were studied in parallel with REO dopant metals (Co(2+), Fe(3+), Mn(2+), Ni(2+), Sr(2+)). The highest concentrations of REOs tested were 100 mg/L with protozoa in deionized water and 500 mg/L with bacteria in 2% NaCl...
July 5, 2017: Materials
https://www.readbyqxmd.com/read/28771465/ebv-epigenetically-suppresses-the-b-cell-to-plasma-cell-differentiation-pathway-while-establishing-long-term-latency
#17
Christine T Styles, Quentin Bazot, Gillian A Parker, Robert E White, Kostas Paschos, Martin J Allday
Mature human B cells infected by Epstein-Barr virus (EBV) become activated, grow, and proliferate. If the cells are infected ex vivo, they are transformed into continuously proliferating lymphoblastoid cell lines (LCLs) that carry EBV DNA as extra-chromosomal episomes, express 9 latency-associated EBV proteins, and phenotypically resemble antigen-activated B-blasts. In vivo similar B-blasts can differentiate to become memory B cells (MBC), in which EBV persistence is established. Three related latency-associated viral proteins EBNA3A, EBNA3B, and EBNA3C are transcription factors that regulate a multitude of cellular genes...
August 2017: PLoS Biology
https://www.readbyqxmd.com/read/28763946/synthesis-and-in-vitro-evaluation-of-peracetyl-and-deacetyl-glycosides-of-eugenol-isoeugenol-and-dihydroeugenol-acting-against-food-contaminating-bacteria
#18
Déborah Braga Resende, Heloísa Helena de Abreu Martins, Thiago Belarmino de Souza, Diogo Teixeira Carvalho, Roberta Hilsdorf Piccoli, Rosane Freitas Schwan, Disney Ribeiro Dias
Essential oils, as well as their separate components, have shown promise as alternatives to synthetic preservatives. Therefore, it would be interesting to optimize the effect of these compounds and to evaluate their applicability as additives in food. To this end, six peracetyl and deacetyl glycosides were synthesized from eugenol, isoeugenol and dihydroeugenol. All of the glycosides were characterized by IR and NMR. The synthesized compounds and their aglycones were evaluated to determine their minimal bactericidal concentrations (MBC) against the spoilage food bacteria Escherichia coli, Listeria monocytogenes, Staphylococcus aureus and Salmonella enteritidis...
December 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28763662/effects-of-hexaconazole-application-on-soil-microbes-community-and-nitrogen-transformations-in-paddy-soils
#19
Chao Ju, Jun Xu, Xiaohu Wu, Fengshou Dong, Xingang Liu, Chunyan Tian, Yongquan Zheng
The ecological risks of widely used hexaconazole on soil microbes remain obscure. Thus, a 3-month-long experiment using two typical paddy soils in China (red soil and black soil) was conducted to assess the effects of hexaconazole (0.6 (T1) and 6 (T10) mgkg(-1) soil) on the overall microbial biomass, respiratory activity, bacterial abundance and community structure, and nitrogen transformations. Soil was sampled after 7, 15, 30, 60, and 90days of incubation. The half-lives of the two doses of hexaconazole varied from 122 to 135d in the black soil and from 270 to 845d in the red soil...
July 28, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28761747/eribulin-for-metastatic-breast-cancer-mbc-treatment-a-retrospective-multicenter-study-based-in-campania-south-italy-eri-001-trial
#20
Michele Orditura, Adriano Gravina, Ferdinando Riccardi, Anna Diana, Carmela Mocerino, Luigi Leopaldi, Alessio Fabozzi, Guido Giordano, Raffaele Nettuno, Pasquale Incoronato, Maria Luisa Barzelloni, Roberta Caputo, Agata Pisano, Giuseppe Grimaldi, Geppino Genua, Vincenzo Montesarchio, Enrico Barbato, Giovanni Iodice, Eva Lieto, Eugenio Procaccini, Roberto Mabilia, Antonio Febbraro, Michelino De Laurentiis, Fortunato Ciardiello
BACKGROUND: On the basis of the results of two pivotal phase III clinical trials, eribulin mesylate is currently approved in EU for the treatment of advanced breast cancer (aBC) in patients who have previously received an anthracycline and a taxane in either the adjuvant or the metastatic setting, and at least one chemotherapeutic regimen for metastatic disease. METHODS: In our study, we investigated the efficacy and tolerability of eribulin as second or further line chemotherapy in 137 women affected by aBC...
2017: ESMO Open
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